WO2018171670A1

WO2018171670A1 - Information processing method and related device

Info

Publication number: WO2018171670A1
Application number: PCT/CN2018/080018
Authority: WO
Inventors: 杜白; 彭金磷; 董朋朋; 伊斯兰·陶菲克尔
Original assignee: 华为技术有限公司
Priority date: 2017-03-24
Filing date: 2018-03-22
Publication date: 2018-09-27
Also published as: CN108633094B; CN108633094A

Abstract

Disclosed are an information processing method and a related device. The method comprises: a network access device sending at least one of first indication information and second indication information to a first terminal device, wherein the first indication information is used for indicating whether or not a second DMRS has been sent to a second terminal device on a first time frequency resource, and the second indication information is used for indicating the sending mode of the second DMRS, a second time frequency resource comprising the first time frequency resource, and the second time frequency resource being a time frequency resource for the network access device to send a first DMRS to the first terminal device. The embodiments of the present application prevent a first terminal device receiving a second DMRS, and using the second DMRS for erroneous estimation of a channel state, thereby resulting in the first terminal device decoding received data in error.

Description

Information processing method and related equipment

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. in.

Technical field

The present application relates to the field of communications technologies, and in particular, to an information processing method and related devices.

Background technique

Mobile communication technology has profoundly changed people's lives, but the pursuit of higher performance mobile communication technology has never stopped. In order to cope with the explosive growth of mobile data traffic in the future, the connection of devices for mass mobile communication, and the emerging new services and application scenarios, the fifth generation (5G) mobile communication system emerged. The international telecommunication union (ITU) defines three types of application scenarios for 5G and future mobile communication systems: enhanced mobile broadband (eMBB), high reliable low latency communication (ultra reliable and low latency). Communications, URLLC) and massive machine type communications (mMTC).

Typical eMBB services include: ultra high definition video, augmented reality (AR), virtual reality (VR), etc. The main features of these services are large amount of transmitted data and high transmission rate. Typical URLLC services include: wireless control in industrial manufacturing or production processes, motion control of driverless cars and drones, and tactile interaction applications such as remote repair and remote surgery. The main features of these services are ultra-reliable. Sex, low latency, less data transfer and burstiness. Typical mMTC services include: smart grid distribution automation, smart city, etc. The main features are huge number of networked devices, small amount of transmitted data, and insensitive data transmission delay. These mMTC terminals need to meet low cost and very long standby. The demand for time.

The URLLC service requires extremely high latency. When there is no reliability requirement, the delay requirement is within 0.5ms. Under the 99.999% reliability requirement, the delay should still be within 1ms. In a long term evolution (LTE) system, the smallest time scheduling unit is a transmission time interval (TTI) of 1 ms duration. In order to meet the transmission delay requirement of the URLLC service, the data transmission of the wireless air interface can use a shorter time scheduling unit, for example, using a mini-slot or a larger sub-carrier time slot as the minimum time scheduling. unit. Wherein, a mini-slot includes one or more time domain symbols, where the time domain symbols may be orthogonal frequency division multiplexing (OFDM) symbols. For a time slot with a subcarrier spacing of 15 kilohertz (kilohertz, kHz), including 6 or 7 time domain symbols, the corresponding time length is 0.5 ms; for a time slot with a subcarrier spacing of 60 kHz, the corresponding time The length is shortened to 0.125ms.

The generation of data packets of the URLLC service is bursty and random, and may not generate data packets for a long period of time, or may generate multiple data packets in a short time. The packets of the URLLC service are in most cases small packets, for example 50 bytes. The characteristics of the data packets of the URLLC service affect the way resources are allocated by the communication system. The resources herein include but are not limited to: time domain symbols, frequency domain resources, time-frequency resources, codeword resources, and beam resources. Generally, the allocation of system resources is performed by the base station. The following uses a base station as an example for description. If the base station allocates resources for the URLLC service by using reserved resources, the system resources are wasted when there is no URLLC service. Moreover, the short delay feature of the URLLC service requires the data packet to be transmitted in a very short period of time. Therefore, the base station needs to reserve a sufficiently large bandwidth for the URLLC service, thereby causing a serious drop in system resource utilization.

Since the data volume of the eMBB service is relatively large and the transmission rate is relatively high, a longer time scheduling unit is generally used for data transmission to improve transmission efficiency. For example, one time slot with a 15 kHz subcarrier spacing corresponds to seven time domain symbols. The corresponding time length is 0.5ms. The URLLC service data usually adopts a shorter time scheduling unit to meet the requirements of ultra-short delay, for example, two time domain symbols with 15 kHz subcarrier spacing, or one time slot with 60 kHz subcarrier spacing, corresponding to seven time slots. The domain symbol, the corresponding length of time is 0.125ms.

Due to the burstiness of the data of the URLLC service, in order to improve the system resource utilization, the base station usually does not reserve resources for downlink data transmission of the URLLC service. When the URLLC service data arrives at the base station, if there is no idle time-frequency resource at this time, the base station cannot wait for the scheduled transmission of the eMBB service data to complete the URLLC service data, in order to meet the ultra-short delay requirement of the URLLC service. . The base station may allocate resources for URLLC service data in a preemption manner. As shown in FIG. 1, the preemption refers to that the base station selects part or all of the time-frequency resources for transmitting the URLLC service data on the time-frequency resources that have been allocated for transmitting the eMBB service data, and the base station is used for transmitting the URLLC service. The data of the eMBB service is not transmitted on the time-frequency resource of the data.

In a 5G communication system, the receiving end needs to use a demodulation reference signal (DMRS) to estimate the state of the channel, and then decode the received data according to the state of the channel. If the state of the channel is estimated incorrectly, it is difficult to decode the received data correctly.

However, it is found in practice that if the URLLC service preempts the time-frequency resources of the DMRS information of the eMBB service, the terminal device of the eMBB service cannot receive the DMRS information of the eMBB service, and the terminal device of the eMBB service cannot decode the received data. .

Summary of the invention

The embodiment of the present application provides an information processing method and related device, which facilitates the terminal device of the eMBB service to successfully decode the received data.

In a first aspect, the embodiment of the present application provides an information processing method, where the method includes: the access network device sends at least one of the first indication information and the second indication information to the first terminal device, where the first The indication information is used to indicate whether the second DMRS is sent to the second terminal device on the first time-frequency resource, where the second indication information is used to indicate a transmission mode of the second DMRS, and the second time-frequency resource includes the first time-frequency The second time-frequency resource is used by the access network device to send the time-frequency resource of the first DMRS to the first terminal device.

For example, the access network device may only send first indication information to the first terminal device for indicating whether to send the second DMRS to the second terminal device on the first time-frequency resource. The second DMRS is used for channel estimation by the second terminal device. If the first terminal device uses the second DMRS for channel estimation, the first terminal device may estimate the channel state error, causing the first terminal device to decode the received data. error. After the first terminal device stores the transmission mode of the second DMRS in advance, the first terminal device may pre-store the first indication according to the first terminal device after receiving the first indication information. A first time-frequency resource is determined by a transmission mode of the DMRS and a transmission mode of the second DMRS. The first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, the specific implementation manner of determining, by the first terminal device, the first time-frequency resource according to the sending mode of the second DMRS and the sending mode of the first DMRS may be: the first terminal device sends the second DMRS by using the full bandwidth. The first terminal device can determine the time-frequency resource of the second DMRS on the full bandwidth according to the transmission mode of the second DMRS. The first terminal device determines to send the second time-frequency resource of the first DMRS according to the sending mode of the first DMRS. The first terminal device determines, as the first time-frequency resource, a portion of the second DMRS that overlaps the time-frequency resource on the full bandwidth and the second time-frequency resource.

Optionally, the access network device may also send the sending bandwidth of the second DMRS to the first terminal device. The specific implementation manner of determining the first time-frequency resource by the first terminal device according to the sending mode of the second DMRS and the sending mode of the first DMRS may be: the first terminal device may determine that the second DMRS is in accordance with the sending mode of the second DMRS. Time-frequency resources on the transmission bandwidth. The first terminal device determines to send the second time-frequency resource of the first DMRS according to the sending mode of the first DMRS. The first terminal device determines, as the first time-frequency resource, a portion of the second DMRS that overlaps the time-frequency resource on the transmission bandwidth and the second time-frequency resource.

For example, if the access network device sends the second DMRS to the second terminal device on the first time-frequency resource, the access network device may send only the second terminal device to indicate the second DMRS transmission mode. Instructions. After receiving the second indication information, the first terminal device may determine the first time-frequency resource according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. The first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

For example, if the access network device sends the second DMRS to the second terminal device on the first time-frequency resource, the access network device may send the first indication information and the second indication information to the first terminal device. After the first terminal device receives the first indication information and the second indication information, the first time is determined according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. Frequency resources. The first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

As an optional implementation, if the second DMRS is sent to the second terminal device on the first time-frequency resource, the access network device may not send the first indication information and the second indication information to the first terminal device, The network access device may send third indication information for indicating the first time-frequency resource to the first terminal device. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

As an optional implementation, if the second DMRS is sent to the second terminal device on the first time-frequency resource, the access network device may send the first indication information to the first terminal device and indicate the first time The third indication of the frequency resource. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

As an optional implementation manner, the first indication information is sent by using physical layer control signaling. For example, the first indication information may be sent by Downlink Control Information (DCI).

As an optional implementation manner, the second indication information is sent by using physical layer control signaling or by media access control layer signaling or by using radio resource control signaling.

As an optional implementation manner, the third indication information is sent by using physical layer control signaling or by media access control layer signaling or by using radio resource control signaling.

As an optional implementation, the access network device may further send the second DMRS to the second terminal device on the first time-frequency resource; and send the first DMRS to the first terminal device on the second time-frequency resource; And setting a transmit power of the first DMRS on the first time-frequency resource to zero. The setting of the transmit power of the first DMRS on the first time-frequency resource to zero may also be understood as not transmitting the first DMRS on the first time-frequency resource, that is, the final access network device is only at the first time-frequency. The second DMRS is sent to the second terminal device on the resource.

It can be seen that, by using the method described in the first aspect, the access network device sends at least one of the first indication information and the second indication information to the first terminal device (such as the terminal device corresponding to the URLLC service), so that the first The terminal device does not receive the second DMRS (such as the DMRS of the eMBB service) in the first time-frequency resource, thereby avoiding the channel state estimation error using the second DMRS, resulting in decoding error of the received data. Therefore, when the access network device sends the first DMRS to the first terminal device in the first time-frequency resource, and when the first time-frequency resource sends the second DMRS to the second terminal device (such as the terminal device corresponding to the eMBB service), The network access device may set the transmit power of the first DMRS in the first time-frequency resource to zero. That is, the second DMRS is sent to the second terminal device only in the first time-frequency resource, so that the second terminal device can successfully receive the second DMRS, and the second terminal device can correctly receive the received data through the second DMRS. decoding.

In a second aspect, the embodiment of the present application provides an information processing method, where the method includes: the access network device sends, by using the first sequence processing, the first DMRS to the first terminal device on the first time-frequency resource; And transmitting, by the second time-frequency resource, the second DMRS processed by the second sequence to the second terminal device, where the second time-frequency resource includes a first time-frequency resource, where the length of the first sequence is smaller than the length of the second sequence, and The first sequence is orthogonal to the target subsequence of the second sequence, the length of the target subsequence being equal to the length of the first sequence. That is, the first sequence and the second sequence are OCC sequences, and the first DMRS and the second DMRS multiplex the first time-frequency resource.

It can be seen that, by implementing the method described in the second aspect, the first DMRS and the second DMRS can multiplex the first time-frequency resource, so that the second terminal device (such as the terminal device of the eMBB service) can receive the complete second DMRS information. And the second terminal device can correctly decode the received data through the second DMRS.

As an optional implementation manner, the access network device sends sequence information to the first terminal device, where the sequence information is used to determine the first sequence. Optionally, the sequence information may be the first sequence. Alternatively, the sequence information may be an index of the first sequence.

As an optional implementation manner, a default first sequence may also be set in the first terminal device, where the first terminal device passes the first terminal after the first time-frequency resource receives the first DMRS processed by the first sequence. The first sequence of the device defaults and the first DMRS processed by the first sequence received at the first time-frequency resource, and the first DMRS is solved.

As an optional implementation manner, the sequence information is sent through physical layer control signaling.

As an optional implementation, the first sequence and the second sequence may be a time domain or a frequency domain, or a time domain frequency domain mixed sequence, which is not limited in the embodiment of the present invention.

In a third aspect, the embodiment of the present application provides an information processing method, where the method includes: the access network device sends at least one of the first indication information and the second indication information to the first terminal device, where the first The indication information is used to indicate whether the first DMRS is sent to the first terminal device on the first time-frequency resource, where the second indication information is used to indicate that the access network device sends to the second terminal device on the second time-frequency resource. a transmission mode of the second DMRS, where the second time-frequency resource includes a first time-frequency resource, and the first DMRS is an additional DMRS.

Optionally, the first terminal device may be a terminal device of the eMBB service, and the second terminal device may be a terminal device of the URLLC service.

Optionally, the access network device may send, to the first terminal device, first indication information for indicating whether to send the first DMRS to the first terminal device on the first time-frequency resource. And transmitting, by the first terminal device, to the first terminal device, if the first terminal device stores the transmission mode of the second DMRS in advance, the first terminal device is configured to indicate that the first terminal is not on the first time-frequency resource. After the first indication information of the first DMRS is sent by the device, the first terminal device may determine the first time-frequency resource according to the sending mode of the second DMRS and the sending mode of the first DMRS that are pre-stored by the first terminal device (ie, the first time The frequency resource is a time-frequency resource in which the first DMRS and the second DMRS coincide. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel state by using the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data. .

Optionally, the specific implementation manner of determining, by the first terminal device, the first time-frequency resource according to the sending mode of the second DMRS and the sending mode of the first DMRS may be: the first terminal device sends the second DMRS by using the full bandwidth. The first terminal device may determine the second time-frequency resource of the second DMRS on the full bandwidth according to the sending mode of the second DMRS. The first terminal device determines to send the time-frequency resource of the first DMRS according to the sending mode of the first DMRS. The first terminal device determines, as the first time-frequency resource, a portion where the second time-frequency resource of the second DMRS coincides with the time-frequency resource of the first DMRS.

Optionally, the access network device may also send the sending bandwidth of the second DMRS to the first terminal device. The specific implementation manner of determining the first time-frequency resource by the first terminal device according to the sending mode of the second DMRS and the sending mode of the first DMRS may be: the first terminal device may determine that the second DMRS is in accordance with the sending mode of the second DMRS. Time-frequency resources on the transmission bandwidth. The first terminal device determines to send the time-frequency resource of the first DMRS according to the sending mode of the first DMRS. The first terminal device determines, as the first time-frequency resource, a portion of the second DMRS that overlaps the time-frequency resource on the transmission bandwidth and the time-frequency resource that sends the first DMRS.

Optionally, if the access network device does not send the first DMRS to the first terminal device on the first time-frequency resource, the access network device may send only the sending mode for indicating the second DMRS to the first terminal device. Second indication information. After receiving the second indication information, the first terminal device may determine the first time-frequency resource according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, if the access network device does not send the first DMRS to the first terminal device on the first time-frequency resource, the access network device may send the first indication information and the second indication information to the first terminal device. After the first terminal device receives the first indication information and the second indication information, the first time is determined according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. Frequency resources. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, if the first DMRS is not sent to the first terminal device on the first time-frequency resource, the access network device may not send the first indication information and the second indication information to the first terminal device, where the access network device may Sending, to the first terminal device, third indication information indicating the first time-frequency resource. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

Optionally, if the first DMRS is not sent to the first terminal device on the first time-frequency resource, the access network device may send the first indication information and the first Three instructions. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

Optionally, the first indication information is sent by using physical layer control signaling. For example, the first indication information may be sent by downlink control information (DCI).

Optionally, the second indication information is sent by using physical layer control signaling or by media access control layer signaling or by using radio resource control signaling.

Optionally, the third indication information is sent by using physical layer control signaling or by media access control layer signaling or by using radio resource control signaling.

As an optional implementation manner, the access network device may further send the first DMRS to the first terminal device on the first time-frequency resource; and may also send the second terminal device to the second terminal device on the second time-frequency resource. The DMRS; and the transmit power of the first DMRS on the first time-frequency resource may also be set to zero. That is to say, the second DMRS can preempt the time-frequency resources of the first DMRS, so that the delay of sending the second DMRS to the second terminal device can be shortened.

As an optional implementation, the access network device sends a third DMRS to the first terminal device on the third time-frequency resource, where the third DMRS is a non-preemptible DMRS. Optionally, the additional DMRS and the non-preemptable DMRS may be within the same scheduling time unit. Optionally, in order to reduce the decoding delay, the location of the non-preemptable DMRS may be located in front of the additional DMRS.

Optionally, when the access network device sends the third DMRS (ie, the non-preemptive DMRS) to the first terminal device (such as the terminal device of the eMBB service) on the third time-frequency resource, if the access network device is in the fourth time The fourth DMRS is sent to the second terminal device (such as the terminal device of the URLLC service), and the fourth time-frequency resource includes the third time-frequency resource, and the access network device can use the fourth DMRS on the third time-frequency resource. The transmit power is set to zero, so that the access network device sends only the third DMRS to the first terminal device on the third time-frequency resource. Thereby, the first terminal device can smoothly receive the third DMRS, and correctly estimate the channel state through the third DMRS, and correctly decode the received data according to the channel state. Optionally, the access network device may further send at least one of the fourth indication information, the fifth indication information, and the sixth indication information to the second terminal device. The fourth indication information is used to indicate whether to send the third DMRS to the first terminal device on the third time-frequency resource. The fifth indication information is used to indicate a transmission mode of the third DMRS. The sixth indication information is used to indicate the third time-frequency resource. After the second terminal device receives at least one of the fourth indication information, the fifth indication information, and the sixth indication information, the third time-frequency resource may be determined. Therefore, the second terminal device may not receive the third DMRS sent by the access network device on the third time-frequency resource, so as to avoid estimating the channel through the third DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error of the received data.

Optionally, the fourth indication information may be sent by using physical layer control signaling.

Optionally, the fifth indication information and the sixth indication information may be sent by using physical layer control signaling or by media access control layer signaling or by using radio resource control signaling.

Optionally, the third DMRS is processed by the first sequence, and the third DMRS (ie, the non-preemptive DMRS) is sent to the first terminal device (such as the terminal device of the eMBB service) on the third time-frequency resource of the access network device. The access network device may send the fourth DMRS processed by the second sequence to the second terminal device (such as the terminal device of the URLLC service) on the fourth time-frequency resource. The third time-frequency resource includes a fourth time-frequency resource, the length of the second sequence is smaller than the length of the first sequence, and the second sequence is orthogonal to the target sub-sequence of the first sequence, and the length of the target sub-sequence is the second The lengths of the sequences are equal. That is, the third DMRS and the fourth DMRS multiplex the fourth time-frequency resource. Optionally, the first sequence and the second sequence may be a time domain sequence or a frequency domain sequence, or a time domain frequency domain mixed sequence.

Optionally, the access network device may send sequence information to the second terminal device, where the sequence information is used to determine the second sequence. Optionally, the sequence information may be a second sequence. Alternatively, the sequence information may be an index of the second sequence. Optionally, the sequence information is sent through physical layer control signaling. Optionally, a default second sequence may also be set in the second terminal device, and the fourth DMRS is solved by using the second sequence default by the second terminal device.

It can be seen that, by using the method described in the third aspect, the access network device can send at least one of the first indication information and the second indication information to the first terminal device, and the first terminal device receives the first indication information and the second After at least one of the indication information, the second time-frequency resource does not receive the second DMRS, so as to avoid the channel state estimation error with the second DMRS, resulting in the data cannot be successfully decoded.

In a fourth aspect, an embodiment of the present application provides an information processing method, where the method includes: the access network device sends the indication information to the first terminal device. The indication information is used to indicate whether the first time-frequency resource is sent to the first terminal device in the first time-frequency resource. The second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is used by the access network device to send the second DMRS to the second terminal device. The access network device sends the first DMRS to the first terminal device in the first time-frequency resource. The access network device sends the second DMRS to the second terminal device at the second time-frequency resource. The access network device sets the transmit power of the first DMRS on the first time-frequency resource to zero. The access network device sends the first DMRS to the first terminal device in the preset time-frequency resource.

Optionally, the access network device sends the indication information to the first terminal device when the size of the first time-frequency resource reaches a preset size.

Optionally, the access network device sends the first DMRS to the first terminal device (such as the terminal device of the eMBB service) on the preset time-frequency resource, and if the access network device sends the first DMRS on the third time-frequency resource to the second terminal The device (such as the terminal device of the URLLC service) sends a third DMRS, where the preset time-frequency resource includes a third time-frequency resource, and the access network device can set the transmit power of the third DMRS on the third time-frequency resource to zero. So that the access network device sends only the first DMRS to the first terminal device on the preset time-frequency resource. Therefore, the first terminal device can smoothly receive the first DMRS in the preset time-frequency resource, and correctly estimate the channel state through the first DMRS, and correctly decode the received data according to the channel state. Optionally, the access network device may further send at least one of the second indication information, the third indication information, and the fourth indication information to the second terminal device. The second indication information is used to indicate whether the first DMRS is sent to the first terminal device on the third time-frequency resource. The third indication information is used to indicate a transmission mode of the first DMRS. The fourth indication information is used to indicate the third time-frequency resource. After the second terminal device receives at least one of the second indication information, the third indication information, and the fourth indication information, the third time-frequency resource may be determined. Therefore, the second terminal device may not receive the first DMRS sent by the access network device on the third time-frequency resource, so as to avoid estimating the channel through the first DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, the second indication information may be sent by using physical layer control signaling.

Optionally, the third indication information and the fourth indication information may be sent by using physical layer control signaling or by media access control layer signaling or by using radio resource control signaling.

Optionally, the first DMRS is processed by the first sequence, and when the access network device sends the first DMRS to the first terminal device (such as the terminal device of the eMBB service) on the preset time-frequency resource, the access network device The third DMRS processed by the second sequence may be sent to the second terminal device (such as the terminal device of the URLLC service) on the third time-frequency resource. The preset time-frequency resource includes a third time-frequency resource, the length of the second sequence is smaller than the length of the first sequence, and the second sequence is orthogonal to the target sub-sequence of the first sequence, and the length of the target sub-sequence is the second The lengths of the sequences are equal. That is, the first DMRS and the third DMRS multiplex the third time-frequency resource. Optionally, the first sequence and the second sequence may be a time domain sequence or a frequency domain sequence, or a time domain frequency domain mixed sequence.

Optionally, the access network device may send sequence information to the second terminal device, where the sequence information is used to determine the second sequence. Optionally, the sequence information may be a second sequence. Alternatively, the sequence information may be an index of the second sequence. Optionally, the sequence information is sent through physical layer control signaling. Optionally, a default second sequence may also be set in the second terminal device, and the third DMRS is solved by using the second sequence default by the second terminal device.

It can be seen that, by using the method described in the fourth aspect, the access network device may send, to the first terminal device, indication information that is used to indicate whether the first time-frequency resource sends the first DMRS to the first terminal device, and The frequency resource sends the first DMRS to the first terminal device. After the first terminal device receives the indication information, the first DMRS may be received by the default preset time-frequency resource of the first terminal device, so that the channel state is correctly estimated by using the first DMRS.

In a fifth aspect, the embodiment of the present application provides an information processing method, where the method includes: receiving, by the first terminal device, at least one of first indication information and second indication information that are sent by the access network device; An indication information is used to indicate whether the second demodulation reference signal DMRS is sent to the second terminal device on the first time-frequency resource, where the second indication information is used to indicate a transmission mode of the second DMRS, where the second time-frequency resource includes the The first time-frequency resource, the second time-frequency resource is that the access network device sends the time-frequency resource of the first DMRS to the first terminal device.

Optionally, the first indication information is sent by using physical layer control signaling.

It can be seen that, after the first terminal device receives the at least one of the first indication information and the second indication information, the first terminal device may not receive the second DMRS in the first time-frequency resource by using the method described in the fifth aspect. For example, the DMRS of the eMBB service, thereby avoiding the channel state estimation error using the second DMRS, resulting in decoding errors of the received data. Therefore, when the access network device sends the first DMRS to the first terminal device in the first time-frequency resource, and when the first time-frequency resource sends the second DMRS to the second terminal device (such as the terminal device corresponding to the eMBB service), The network access device may set the transmit power of the first DMRS in the first time-frequency resource to zero. That is, the second DMRS is sent to the second terminal device only in the first time-frequency resource, so that the second terminal device can successfully receive the second DMRS, and the second terminal device can correctly receive the received data through the second DMRS. decoding.

In a sixth aspect, the embodiment of the present application provides an information processing method, where the method includes: receiving, by a first terminal device, a first demodulation reference signal that is processed by the access network device and is sent by using the first sequence on the first time-frequency resource. DMRS, the second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is used by the access network device to send, by the second terminal device, the second DMRS processed by the second sequence, where the length of the first sequence is smaller than The length of the second sequence, and the first sequence is orthogonal to the target subsequence of the second sequence, the length of the target subsequence being equal to the length of the first sequence.

Optionally, the first terminal device receives sequence information sent by the access network device, where the sequence information is used to determine the first sequence.

Optionally, the sequence information is sent through physical layer control signaling.

It can be seen that, by implementing the method described in the sixth aspect, the first DMRS and the second DMRS can multiplex the first time-frequency resource, so that the second terminal device (such as the terminal device of the eMBB service) can receive the complete second DMRS information. And the second terminal device can correctly decode the received data through the second DMRS.

In a seventh aspect, the embodiment of the present application provides an information processing method, where the method includes: receiving, by the first terminal device, at least one of first indication information and second indication information that are sent by the access network device, where An indication information is used to indicate whether the first DMRS is sent to the first terminal device on the first time-frequency resource, where the second indication information is used to indicate that the access network device sends the second DMRS to the second terminal device on the second time-frequency resource. a transmission mode of the second DMRS, where the second time-frequency resource includes a first time-frequency resource, where the first DMRS is an additional DMRS.

Optionally, the first terminal device may only receive the first indication information for indicating whether to send the first DMRS to the first terminal device on the first time-frequency resource. The first terminal device pre-stores a transmission mode of the second DMRS, where the first terminal device receives the first indication information for indicating that the first DMRS is not sent to the first terminal device on the first time-frequency resource, the first The terminal device may determine the first time-frequency resource according to the sending mode of the second DMRS and the sending mode of the first DMRS, that is, the first time-frequency resource is the time-frequency of the first DMRS and the second DMRS. Resources). Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel state by using the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data. .

Optionally, the first terminal device may also receive a transmission bandwidth of the second DMRS sent by the access network device. The specific implementation manner of determining, by the first terminal device, the first time-frequency resource according to the sending mode of the second DMRS and the sending mode of the first DMRS may be: determining, by the first terminal device, the second DMRS in the sending bandwidth according to the sending mode of the second DMRS Time-frequency resources on. The first terminal device determines to send the time-frequency resource of the first DMRS according to the sending mode of the first DMRS. The first terminal device determines, as the first time-frequency resource, a portion of the second DMRS that overlaps the time-frequency resource on the transmission bandwidth and the time-frequency resource that sends the first DMRS.

Optionally, the first terminal device may only receive the second indication information that is sent by the access network device and is used to indicate a sending mode of the second DMRS. After receiving the second indication information, the first terminal device may determine the first time-frequency resource according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information, and The second DMRS sent by the access network device is not received on the one-time frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, the first terminal device may only receive the first indication information and the second indication information that are sent by the access network device. After the first terminal device receives the first indication information and the second indication information, the first time is determined according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. The frequency resource and the second DMRS sent by the access network device are not received on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, the first terminal device may only receive the third indication information that is sent by the access network device to indicate the first time-frequency resource. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

Optionally, the first terminal device may only receive the first indication information sent by the access network device and the third indication information used to indicate the first time-frequency resource. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

It can be seen that, after the first terminal device receives the at least one of the first indication information and the second indication information, the first time-frequency resource may not receive the second DMRS to avoid using the second DMRS. The channel state is estimated incorrectly, causing the received data to not be successfully decoded.

In an eighth aspect, an embodiment of the present application provides an information processing method, where the method includes: receiving, by a first terminal device, indication information sent by an access network device. The indication information is used to indicate whether the first time-frequency resource is sent to the first terminal device in the first time-frequency resource. The second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is used by the access network device to send the second DMRS to the second terminal device. The first terminal device receives the first DMRS sent by the access network device at the preset time-frequency resource.

Optionally, the first terminal device may be a terminal device of an eMBB service. Optionally, the second terminal device may be a terminal device of the URLLC service.

Optionally, the indication information is sent by the access network device when the size of the first time-frequency resource reaches a preset size.

It can be seen that, by using the method described in the eighth aspect, the access network device may send, to the first terminal device, indication information that is used to indicate whether the first time-frequency resource sends the first DMRS to the first terminal device, and The frequency resource sends the first DMRS to the first terminal device. After the first terminal device receives the indication information, the first DMRS may be received by the default preset time-frequency resource of the first terminal device, so that the channel state is correctly estimated by using the first DMRS.

A ninth aspect provides an access network device, where the access network device has the foregoing first aspect, a possible implementation manner of the first aspect, a second aspect, a possible implementation manner of the second aspect, and a third aspect, The three possible implementation manners, the fourth aspect or the fourth aspect of the possible implementation manner of access network device behavior. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more units corresponding to the functions described above. The unit can be software and/or hardware. Based on the same inventive concept, the principle and the beneficial effects of the access network device for solving the problem can be referred to the foregoing first aspect, the possible implementation manner of the first aspect, the second aspect, the possible implementation manner of the second aspect, the third aspect, and the third The beneficial effects brought about by the possible implementations of the aspects, the fourth aspect or the possible implementations of the fourth aspect are not repeated here.

A tenth aspect provides a terminal device, which has the foregoing fifth aspect, a possible implementation manner of the fifth aspect, a sixth aspect, a possible implementation manner of the sixth aspect, a seventh aspect, and a seventh aspect. The function of the behavior of the first terminal device in the implementation manner, the eighth aspect or the possible implementation manner of the eighth aspect. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more units corresponding to the functions described above. The unit can be software and/or hardware. Based on the same inventive concept, the principle and the beneficial effects of the terminal device for solving the problem can be referred to the foregoing fifth aspect, the possible implementation manner of the fifth aspect, the sixth aspect, the possible implementation manner of the sixth aspect, the seventh aspect, and the seventh aspect. The beneficial effects brought about by the implementation manner, the eighth aspect or the possible implementation manner of the eighth aspect are not repeated here.

In an eleventh aspect, an access network device is provided, the access network device includes: a processor, a memory, a communication interface, and one or more programs; the processor, the communication interface, and the memory are connected; optionally, the connection The network access device further includes a bus system, the processor, the communication interface and the memory are connected by a bus system; wherein one or more programs are stored in the memory, the processor calls a program stored in the memory to implement the first aspect described above Possible implementations of the first aspect, the second aspect, the possible implementation of the second aspect, the third aspect, the possible implementation of the third aspect, the solution of the fourth aspect or the possible implementation of the fourth aspect, the connection For the implementation of the problem and the beneficial effects of the network access device, reference may be made to the foregoing first aspect, the possible implementation manner of the first aspect, the second aspect, the possible implementation manner of the second aspect, the third aspect, the possible implementation manner of the third aspect, The possible implementations and beneficial effects of the fourth aspect or the fourth aspect are not repeated here.

According to a twelfth aspect, a terminal device includes: a processor, a memory, a communication interface, and one or more programs; the processor, the communication interface, and the memory are connected; optionally, the terminal device further includes a bus The system, the processor, the communication interface and the memory are connected by a bus system; wherein one or more programs are stored in the memory, the processor calling a program stored in the memory to implement the fifth aspect, the fifth aspect possible The implementation manner, the sixth aspect, the possible implementation manner of the sixth aspect, the seventh aspect, the possible implementation manner of the seventh aspect, the function of the first terminal device in the possible implementation manner of the eighth aspect or the eighth aspect, the terminal device For the implementation of the problem and the beneficial effects, reference may be made to the foregoing fifth aspect, the possible implementation manner of the fifth aspect, the sixth aspect, the possible implementation manner of the sixth aspect, the seventh aspect, the possible implementation manner of the seventh aspect, and the eighth aspect. Or the possible implementations and beneficial effects of the eighth aspect, and the repetitions are not repeated.

A thirteenth aspect, a communication system is provided, the system comprising: the access network device of the ninth aspect and the terminal device of the tenth aspect.

DRAWINGS

FIG. 1 is a schematic diagram of a conventional resource preemption;

2 is a schematic structural diagram of a conventional mobile communication system;

3 is a schematic flowchart of an information processing method according to an embodiment of the present application;

4 and FIG. 5 are schematic diagrams of a DMRS transmission mode provided by an embodiment of the present application;

6 is a schematic diagram of resource allocation provided by an embodiment of the present application;

FIG. 7 is a schematic flowchart diagram of another information processing method according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a process of processing an OCRS by an OCC sequence according to an embodiment of the present application;

9 is a schematic diagram of resource mapping of a DMRS using a time domain OCC sequence according to an embodiment of the present application;

10 is a schematic diagram of resource mapping of a DMRS using a frequency domain OCC sequence according to an embodiment of the present application;

11 is a schematic diagram of resource mapping of a DMRS of an OCC sequence using a time domain frequency domain hybrid according to an embodiment of the present disclosure;

FIG. 12 is a schematic flowchart diagram of still another information processing method according to an embodiment of the present application;

13 is a schematic diagram of time-frequency resources occupied by a conventional DMRS in a scheduling time unit;

FIG. 14 is a schematic diagram of time-frequency resources occupied by a DMRS in a scheduling time unit according to an embodiment of the present application; FIG.

FIG. 15 is a schematic flowchart diagram of still another information processing method according to an embodiment of the present application;

FIG. 16 is a schematic structural diagram of an access network device according to an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

detailed description

The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings.

In the existing practical applications, the terminal devices of the eMBB service and the URLLC service need to use DMRS to estimate the state of the channel, and then decode the received data according to the state of the channel. In actual applications, the URLLC service may preempt the time-frequency resources of the DMRS information of the eMBB service, and the terminal device of the eMBB service cannot decode the received data.

The embodiment of the present application provides an information processing method and related device, which is beneficial for a terminal device of an eMBB service to successfully decode received data.

In order to better understand the embodiments of the present application, the mobile communication system architecture applicable to the embodiments of the present application is described below.

2 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applicable. As shown in FIG. 2, the mobile communication system includes a core network device 21, an access network device 22, and a terminal device (such as the first terminal device 23 and the second terminal device 24 in FIG. 2). The terminal device is connected to the access network device in a wireless manner, and the access network device is connected to the core network device through a wireless or wired manner. The core network device and the access network device may be independent physical devices, or may integrate the functions of the core network device with the logical functions of the access network device on the same physical device, or may be integrated on one physical device. The functions of some core network devices and the functions of some access network devices. The terminal device can be fixed or mobile. FIG. 2 is only a schematic diagram, and the communication system may further include other access network devices, such as a wireless relay device and a wireless backhaul device, which are not shown in FIG. 2. The embodiment of the present application does not limit the number of core network devices, access network devices, and terminal devices included in the mobile communication system.

The access network device is an access device that the terminal device accesses to the mobile communication system by using a wireless device, and may be a base station NodeB, an evolved base station eNodeB, a base station in a 5G mobile communication system, a base station in a future mobile communication system, or a WiFi. The specific technology and the specific device configuration adopted by the access network device are not limited in the embodiment of the present application.

The terminal device may also be referred to as a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like. The terminal device can be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless in transport safety A terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.

Access network equipment and terminal equipment can be deployed on land, indoors or outdoors, hand-held or on-board; they can also be deployed on the water; they can also be deployed on airborne aircraft, balloons and satellites. The application scenarios of the access network device and the terminal device are not limited in the embodiment of the present application.

The access network device and the terminal device and between the terminal device and the terminal device can communicate through a licensed spectrum, or can communicate through an unlicensed spectrum, or can simultaneously pass the licensed spectrum and the license-free. The spectrum communicates. The access network device and the terminal device and the terminal device and the terminal device can communicate through the spectrum below 6G, or can communicate through the spectrum of 6G or higher, and can simultaneously use the spectrum below 6G and the spectrum above 6G. Communication. The embodiment of the present application does not limit the spectrum resources used between the access network device and the terminal device.

The information processing method and related devices provided by the present application are further described below.

Referring to FIG. 3, FIG. 3 is an information processing method provided by an embodiment of the present application. As shown in FIG. 3, the information processing method includes the following sections 301 to 304, wherein:

301. The access network device sends at least one of the first indication information and the second indication information to the first terminal device.

Optionally, the access network device may perform part 301 before performing 302-304, or may perform part 301-304 at the same time, which is not limited in this embodiment.

In this embodiment, the first indication information is used to indicate whether the second DMRS is sent to the second terminal device on the first time-frequency resource. The second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is that the access network device sends the time-frequency resource of the first DMRS to the first terminal device. The second indication information is used to indicate a transmission mode of the second DMRS. The second DMRS is used by the second terminal device to perform channel state estimation. The second terminal device decodes the received data according to the channel state estimation result.

Optionally, the second terminal device may be a terminal device of the eMBB service. Optionally, the first terminal device may be a terminal device of the URLLC service, or another terminal device that requires a service with a high delay. In the embodiment of the present application, to distinguish the DMRS sent to the first terminal device and the DMRS sent to the second terminal, the DMRS sent to the second terminal is defined as the second DMRS, and the DMRS sent to the first terminal is defined as the first A DMRS.

Optionally, the access network device may send, to the first terminal device, first indication information for indicating whether to send the second DMRS to the second terminal device on the first time-frequency resource. The first indication information may not specifically indicate which time-frequency resource the first time-frequency resource is. The first indication information may be 1 bit information, for example, the first indication information is 1, indicating that the second DMRS is sent to the second terminal device on the first time-frequency resource; the first indication information is 0, indicating that the first time-frequency resource is The second DMRS is not sent to the second terminal device. Optionally, when the access network device does not send the second DMRS to the second terminal device on the first time-frequency resource, the access network device may send, to the first terminal device, the indication that the first time-frequency resource is not available. The second terminal device sends the first indication information of the second DMRS. Alternatively, the access network device may not send any indication information. When the first terminal device does not receive any indication information, the first terminal device determines that the access network device does not send the second terminal device to the second terminal device. DMRS.

The second DMRS is used for the second terminal device to perform channel state estimation. If the first terminal device uses the second DMRS for channel estimation, the first terminal device may estimate the channel state error, causing the first terminal device to receive the received data. Decoding error. Sending the first indication information to the first terminal device, if the first terminal device pre-stores the transmission mode of the second DMRS, the first terminal device receives the indication to send to the second terminal on the first time-frequency resource. After the first indication information of the second DMRS is sent by the device, the first terminal device may determine the first time-frequency resource according to the sending mode of the second DMRS and the sending mode of the first DMRS that are previously stored by the first terminal device (ie, the first time The frequency resource is a time-frequency resource in which the second DMRS and the second DMRS coincide. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel state by using the second DMRS, resulting in an incorrect channel state estimation, and thus decoding the received data. The transmission mode of the DMRS can be understood as the time-frequency resource layout structure of the DMRS. For example, Figures 4 and 5 show two transmission modes of the DMRS. In the transmission modes shown in FIG. 4 and FIG. 5, the time-frequency resource occupied by the DMRS is the time-frequency resource unit of the shaded portion of each slot.

Optionally, if the access network device sends the second DMRS to the second terminal device on the first time-frequency resource, the access network device may send the first mode to the first terminal device to indicate the sending mode of the second DMRS. Two instructions. After receiving the second indication information, the first terminal device may determine the first time-frequency resource according to the sending mode of the second DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, if the access network device sends the second DMRS to the second terminal device on the first time-frequency resource, the access network device may send the first indication information and the second indication information to the first terminal device. After the first terminal device receives the first indication information and the second indication information, the first time is determined according to the sending mode of the second DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. Frequency resources. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data. Optionally, the first indication information and the second indication information may be in the same field or source.

Optionally, if the second DMRS is sent to the second terminal device on the first time-frequency resource, the access network device may not send the first indication information and the second indication information to the first terminal device, where the access network device may The first terminal device sends third indication information for indicating the first time-frequency resource. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

Optionally, if the second DMRS is sent to the second terminal device on the first time-frequency resource, the access network device may send, to the first terminal device, first indication information and a third indicator for indicating the first time-frequency resource. Instructions. After receiving the third indication information, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, thereby causing channel state estimation error. Causes decoding errors in the received data.

302. The access network device sends the second DMRS to the second terminal device on the first time-frequency resource.

303. The access network device sends the first DMRS to the first terminal device on the second time-frequency resource.

The second time-frequency resource may be the same as the first time-frequency resource, or the second time-frequency resource includes other time-frequency resources in addition to the first time-frequency resource.

In the embodiment of the present application, for example, if the first terminal device is a terminal device of the URLLC service, and the second terminal device is a terminal device of the eMBB service, the access network device (such as the base station) may first allocate time-frequency resources for the data of the eMBB service. And transmitting the second DMRS of the eMBB service on the first time-frequency resource. When the data of the URLLC service reaches the access network device, if there is no idle time-frequency resource at this time, the access network device cannot wait for the data transmission of the scheduled eMBB service in order to meet the ultra-short delay requirement of the URLLC service data. After the completion, the data of the URLLC service is scheduled. The access network device may transmit the data of the URLLC service on the time-frequency resource of the eMBB service. Therefore, the access network device may send the first DMRS to the first terminal device on the first time-frequency resource.

304. The access network device sets the transmit power of the first DMRS on the first time-frequency resource to zero.

In the embodiment of the present application, the order of execution of the parts 301, 302, 303, and 304 is not limited.

In the embodiment of the present application, the access network device sets the transmit power of the first DMRS on the first time-frequency resource to zero, and the access network device does not access the first terminal device on the first time-frequency resource. Send the first DMRS. The access network device finally sends the second DMRS to the second terminal device only at the first time-frequency resource.

The method described in FIG. 3 is further described below through a specific application scenario.

As shown in FIG. 6, the time-frequency resources in the black bold frame (that is, all time-frequency resources shown in FIG. 6) are used to send the second DMRS and data to the terminal device (ie, the second terminal device) of the eMBB service. The time-frequency resource of the data, the black time-frequency resource unit (RE) is used to send the second DMRS to the terminal device of the eMBB service. When the data of the URLLC service reaches the access network device, there is no idle time-frequency resource at this time. In order to meet the ultra-short delay requirement of the URLLC service, the access network device allocates the first DMRS and data of the URLLC service to the eMBB service. Transmission on time-frequency resources. As shown in FIG. 6, the access network device allocates the time-frequency resource unit of the shaded portion and the black time-frequency resource unit to the URLLC service. As shown in FIG. 6, the black time-frequency resource unit and the partially shaded portion are used to transmit the first DMRS to the first terminal device. That is to say, the time-frequency resource of the second DMRS and the time-frequency resource overlap of the first DMRS (ie, the black time-frequency resource unit) are the first time-frequency resources. After the time-frequency resource is allocated, the access network device sends the second DMRS to the terminal device of the eMBB service, and sends the second DMRS to the terminal device (ie, the first terminal device) of the URLLC service on the first time-frequency resource. In the first DMRS, the transmit power of the first DMRS on the first time-frequency resource is set to zero, that is, the access network device sends only the second DMRS on the first time-frequency resource. In this way, the terminal device of the eMBB service can receive the second DMRS, so that the state of the channel can be correctly estimated, and the received data can be correctly decoded. The access network device further sends at least one of the first indication information, the second indication information, and the third indication information to the terminal device of the URLLC service. Therefore, after receiving the indication information, the terminal device of the URLLC service may not receive the second DMRS in the first time-frequency resource, so as to avoid erroneous estimation of the channel state by using the second DMRS, and the decoding of the received data fails.

It can be seen that, by using the method described in FIG. 3, the access network device sends at least one of the first indication information and the second indication information to the first terminal device (such as the terminal device corresponding to the URLLC service), so that the first terminal The device does not receive the second DMRS (such as the DMRS of the eMBB service) in the first time-frequency resource. Thereby, the channel state estimation error using the second DMRS is avoided, resulting in decoding error of the received data. Therefore, when the access network device sends the first DMRS to the first terminal device in the first time-frequency resource, and when the first time-frequency resource sends the second DMRS to the second terminal device (such as the terminal device corresponding to the eMBB service), When the access network device sends the first DMRS time-frequency resource to the first terminal device and the first terminal device sends the second DMRS time-frequency resource, the access network device may use the first DMRS in the first time-frequency resource. The transmit power is set to zero. That is, the second DMRS is sent to the second terminal device only in the first time-frequency resource, so that the second terminal device can successfully receive the second DMRS, and the second terminal device can correctly receive the received data through the second DMRS. decoding.

Referring to FIG. 7, FIG. 7 is another information processing method provided by an embodiment of the present application. As shown in FIG. 7, the information processing method includes the following sections 701 and 702, wherein:

701. The access network device sends, by using the first sequence processing, the first DMRS to the first terminal device on the first time-frequency resource.

Optionally, the first terminal device may be a terminal device of the URLLC service.

702. The access network device sends, by using the second sequence processing, the second DMRS to the second terminal device on the second time-frequency resource.

In this embodiment, the second time-frequency resource includes a first time-frequency resource, the length of the first sequence is smaller than the length of the second sequence, and the first sequence is orthogonal to the target sub-sequence of the second sequence, and the target sub-sequence The length is equal to the length of the first sequence. That is, the first sequence and the second sequence are OCC sequences, and the first DMRS and the second DMRS multiplex the first time-frequency resource.

For example, if the second sequence is (-1, -1, 1, 1), the target subsequence may be a sequence consisting of any n values in the second sequence. Where n is less than 4 and n is greater than or equal to 1. For example, the target subsequence can be (-1, -1), (-1, 1) or (1, 1).

Optionally, the second terminal device may be a terminal device of the eMBB service.

The following describes how the access network device processes the first DMRS through the first sequence, and how the access network device processes the second DMRS through the second sequence:

As shown in FIG. 8, the second terminal device 1 and the second terminal device 2 are two terminal devices of the eMBB service; the first terminal device is a terminal device of the URLLC service. The symbol of the second DMRS that needs to be sent to the second terminal device 1 is 2, and the symbol of the second DMRS that needs to be sent to the second terminal device 2 is 1, and the first DMRS that needs to be sent to the first terminal device One of the symbols is -1. The second sequence of the second terminal device 1 is (-1, -1, 1, 1), and the second sequence of the second terminal device 2 is (1, 1, 1, 1), the first sequence of the first terminal device As (1, -1), it can be seen that the length of the first sequence is smaller than the length of the second sequence, and the first sequence is orthogonal to the subsequence (1, 1) of the second sequence. The symbols of the first DMRS and the first DMRS are plural in practical applications, and the calculation is convenient here, and is represented by an integer.

As shown in FIG. 8, the access network device firstly transmits the symbol (ie 2) of the second DMRS to be transmitted to the second terminal device 1 and the second sequence of the second terminal device 1 (-1, -1, 1, 1). Multiplying, the sequence (-2, -2, 2, 2) is obtained, and the symbol (i.e. 1) of the second DMRS to be transmitted to the second terminal device 2 and the second sequence of the second terminal device 2 (1) , 1, 1, 1) multiply, get the sequence (1,1,1,1), and will add the first two digits of the first sequence to get the sequence (0,0,1,-1), will be the first The sign of the DMRS (ie -1) is multiplied by the first sequence (0, 0, 1, -1) to obtain the sequence (0, 0, -1, 1). The access network device adds (-2, -2, 2, 2), (1, 1, 1, 1) and (0, 0, -1, 1) to obtain the sequence (-1, -1, 2, 4). As shown in FIG. 8, the second time-frequency resource includes four time-frequency resource units, the first time-frequency resource includes two time-frequency resource units, and the second time-frequency resource includes the first time-frequency resource. If the first sequence and the second sequence are time domain sequences, the access network device maps the four numbers in the sequence to the four time-frequency resource units in the ellipse and sends them to the second terminal device 1 and the second terminal device 2 And the first terminal device. That is, the second terminal device 1 and the second terminal device 2 receive the sequence (-1, -1, 2, 4) in the second time-frequency resource, and the first terminal device receives the first time-frequency resource. Sequence (2, 4).

The second terminal device 1 multiplies (-1, -1, 2, 4) by the second sequence (-1, -1, 1, 1) to obtain 8, and divides 8 by the square of the second sequence mode (ie, 4) The symbol of the second DMRS (ie 2) is obtained. Similarly, the second terminal device 2 multiplies (-1, -1, 2, 4) by the second sequence (1, 1, 1, 1) to obtain 4, and then divides 4 by the square of the second sequence mode ( That is, 4) the symbol of the second DMRS (i.e., 1) is obtained. Similarly, the first terminal device multiplies (2, 4) by the first sequence (1, -1) to obtain -2, and then divides -2 by the square of the first sequence mode (ie, 2) to obtain the second DMRS. Symbol (ie 1).

Optionally, the access network device may send sequence information to the first terminal device, where the sequence information is used to determine the first sequence. After determining the first sequence, the symbols of the first DMRS can be solved according to the first sequence and the sequence received at the first time-frequency resource ((2, 4) as shown in FIG. 8).

Optionally, the sequence information may be the first sequence. Alternatively, the sequence information may be an index of the first sequence. The first terminal device may store the correspondence between the sequence and the index. After the first terminal device receives the index of the first sequence, the first sequence may be obtained according to the correspondence between the stored sequence and the index.

Optionally, the sequence information is sent through physical layer control signaling. For example, sequence information can be sent via DCI.

Optionally, a default first sequence may also be set in the first terminal device, and the first terminal device passes the first terminal after the first time-frequency resource receiving sequence (as shown in FIG. 8 (2, 4)) The device defaults the first sequence and the first time-frequency resource receiving sequence, and the symbol of the first DMRS is solved.

Optionally, the first sequence and the second sequence may be a time domain sequence or a frequency domain sequence, or a time domain frequency domain mixed sequence, which is not limited in the embodiment of the present invention. For example, if the sequence is a time domain sequence, after the DMRS is processed by the sequence, the mapping position of the time-frequency resource can be as shown in FIG. 9. If the sequence is a frequency domain sequence, after the DMRS is processed by the sequence, the mapping position of the time-frequency resource can be as shown in FIG. If the sequence is a time-domain frequency-domain mixed sequence, after the DMRS is processed by the sequence, the mapping position of the time-frequency resource can be as shown in FIG.

It can be seen that, by implementing the method described in FIG. 7, the first DMRS and the second DMRS can multiplex the first time-frequency resource, so that the second terminal device (such as the terminal device of the eMBB service) can receive the complete second DMRS information. Further, the second terminal device can correctly decode the received data through the second DMRS.

Referring to FIG. 12, FIG. 12 is another information processing method provided by an embodiment of the present application. As shown in FIG. 12, the information processing method includes the following sections 1201 to 1204, wherein:

1201. The access network device sends at least one of the first indication information and the second indication information to the first terminal device.

The first indication information is used to indicate whether the first DMRS is sent to the first terminal device on the first time-frequency resource, where the second indication information is used to indicate that the access network device sends the information to the second time-frequency resource. a transmission mode of the second DMRS of the second terminal device, where the second time-frequency resource includes a first time-frequency resource, where the first DMRS is an additional DMRS.

Optionally, the access network device may further send a third DMRS to the first terminal device on the third time-frequency resource, where the third DMRS is a non-preemptive DMRS. The non-preemptive DMRS means that when the time-frequency resource of the non-preemptive DMRS coincides with the time-frequency resource of the second DMRS that needs to be sent to the second terminal device (such as the terminal device of the URLLC service), the coincident time-frequency resource is still not transmitted. Preempt the DMRS to the first terminal device (such as the terminal device of the eMBB service). Among them, the additional DMRS is an DMRS that is added to improve performance. The additional DMRS is an additional DMRS for enhancing the performance of the channel state detection. Even if the time-frequency resources of the additional DMRS are preempted, the first terminal device can correctly estimate the channel state through the non-preemptive DMRS. Therefore, the extra DMRS is a DMRS that can be preempted by time-frequency resources.

Alternatively, the additional DMRS and the non-preemptable DMRS may be within the same time slot. Optionally, in order to reduce the decoding delay, the location of the non-preemptable DMRS may be located in front of the additional DMRS.

For example, the case where the existing DMRS occupies time-frequency resources in one scheduling time unit can be as shown in FIG. However, in order to improve performance, DMRS can be doubled in one scheduling time unit. As shown in FIG. 14, half of the DMRSs are additional DMRSs, and the other half of the DMRSs are non-preemptable DMRSs.

Optionally, the access network device may send, to the first terminal device, first indication information that is used to indicate whether the first time-frequency resource sends the first DMRS to the first terminal device. The first indication information may not specifically indicate which time-frequency resource the first time-frequency resource is. The first indication information may be 1 bit information. For example, the first indication information is 1, indicating that the first DMRS is sent to the first terminal device on the first time-frequency resource, and the first indication information is 0, indicating that the first time-frequency resource is The first DMRS is not sent to the first terminal device.

And transmitting, by the first terminal device, to the first terminal device, if the first terminal device stores the transmission mode of the second DMRS in advance, the first terminal device is configured to indicate that the first terminal is not on the first time-frequency resource. After the first indication information of the first DMRS is sent by the device, the first terminal device may determine the first time-frequency resource according to the sending mode of the second DMRS and the sending mode of the first DMRS that are pre-stored by the first terminal device (ie, the first time The frequency resource is a time-frequency resource in which the first DMRS and the second DMRS coincide. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel state by using the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data. .

For example, if the access network device does not send the first DMRS to the first terminal device on the first time-frequency resource, the access network device may only send the first terminal device to indicate the sending mode of the second DMRS. Two instructions. After receiving the second indication information, the first terminal device may determine the first time-frequency resource according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. Therefore, the first terminal device can not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, causing channel state estimation error, thereby causing decoding error of the received data. .

For example, if the access network device does not send the first DMRS to the first terminal device on the first time-frequency resource, the access network device may send the first indication information and the second indication information to the first terminal device. After the first terminal device receives the first indication information and the second indication information, the first time is determined according to the sending mode of the first DMRS pre-stored by the first terminal device and the sending mode of the second DMRS indicated by the second indication information. Frequency resources. Therefore, the first terminal device may not receive the second DMRS sent by the access network device on the first time-frequency resource, so as to avoid estimating the channel through the second DMRS, resulting in an incorrect channel state estimation, thereby causing a decoding error on the received data.

Optionally, the third DMRS is processed by the first sequence, and the third DMRS (ie, the non-preemptive DMRS) is sent to the first terminal device (such as the terminal device of the eMBB service) on the third time-frequency resource of the access network device. The access network device may send the fourth DMRS processed by the second sequence to the second terminal device (such as the terminal device of the URLLC service) on the fourth time-frequency resource. The third time-frequency resource includes a fourth time-frequency resource, the length of the second sequence is smaller than the length of the first sequence, and the second sequence is orthogonal to the target sub-sequence of the first sequence, and the length of the target sub-sequence is the second The lengths of the sequences are equal. That is, the third DMRS and the fourth DMRS multiplex the fourth time-frequency resource. Optionally, the first sequence and the second sequence may be a time domain sequence or a frequency domain sequence, or a time domain frequency domain mixed sequence. The principle of how to process the third DMRS by the first sequence and how the access network device passes the second sequence to the fourth DMRS is similar to the principle of the embodiment described in FIG. 7. For details, refer to the implementation described in FIG. For example, it will not be described here.

1202. The access network device sends the first DMRS to the first terminal device on the first time-frequency resource.

1203. The access network device sends the second DMRS to the second terminal device on the second time-frequency resource.

In the embodiment of the present application, the access network device may first allocate the first DMRS for transmission on the first time-frequency resource. When the service of the second terminal device reaches the access network device, if there is no idle time-frequency resource at this time, the access network device cannot wait for the current scheduling in order to meet the ultra-short delay requirement of the service of the second terminal device. After the first DMRS transmission is completed, the second DMRS is scheduled. The access network device allocates the second DMRS for transmission on the first time-frequency resource.

1204. The access network device sets the transmit power of the first DMRS on the first time-frequency resource to zero.

In the embodiment of the present application, the execution order of the portions 1201, 1202, 1203, and 1204 is not limited.

In the embodiment of the present application, the access network device sets the transmit power of the first DMRS on the first time-frequency resource to zero. It can also be understood that the access network device does not send the first DMRS to the first time-frequency resource. First terminal device.

It can be seen that, by using the method described in FIG. 12, the access network device can send at least one of the first indication information and the second indication information to the first terminal device, and the first terminal device receives the first indication information and the second indication. After at least one of the information, the first time-frequency resource does not receive the second DMRS, so as to avoid the channel state estimation error with the second DMRS, and the received data cannot be successfully decoded.

Referring to FIG. 15, FIG. 15 is another information processing method provided by an embodiment of the present application. As shown in FIG. 15, the information processing method includes the following sections 1501 to 1505, wherein:

1501. The access network device sends the indication information to the first terminal device.

In the embodiment of the present application, the indication information is used to indicate whether the first time-frequency resource sends the first DMRS to the first terminal device. The second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is used by the access network device to send the second DMRS to the second terminal device.

Optionally, the access network device may send the indication information to the first terminal device when the size of the first time-frequency resource reaches a preset size.

1502. The access network device sends the first DMRS to the first terminal device in the first time-frequency resource.

1503. The access network device sends the second DMRS to the second terminal device in the second time-frequency resource.

1504. The access network device sets the transmit power of the first DMRS on the first time-frequency resource to zero.

In the embodiment of the present application, the execution order of the parts 1501, 1502, 1503, and 1504 is not limited.

1505. The access network device sends the first DMRS to the first terminal device by using the preset time-frequency resource.

In the embodiment of the present application, after the first terminal device receives the indication information, the first terminal device may receive the first DMRS in the preset preset time-frequency resource of the first terminal device.

Optionally, the access network device sends the first DMRS to the first terminal device (such as the terminal device of the eMBB service) on the preset time-frequency resource, and if the access network device sends the first DMRS on the third time-frequency resource to the second terminal The device (such as the terminal device of the URLLC service) sends a third DMRS, where the preset time-frequency resource includes a third time-frequency resource, and the access network device can set the transmit power of the third DMRS on the third time-frequency resource to zero. So that the access network device sends only the first DMRS to the first terminal device on the preset time-frequency resource. Therefore, the first terminal device can smoothly receive the first DMRS in the preset time-frequency resource, and correctly estimate the channel state through the first DMRS, and correctly decode the received data according to the channel state. Optionally, the access network device may further send at least one of the second indication information, the third indication information, and the fourth indication information to the second terminal device. The second indication information is used to indicate whether the first DMRS is sent to the first terminal device on the third time-frequency resource. The third indication information is used to indicate a transmission mode of the first DMRS. The fourth indication information is used to indicate the third time-frequency resource. After the second terminal device receives the at least one of the second indication information, the third indication information, and the fourth indication information, the third time-frequency resource may be determined, and the third time-frequency resource is not received by the access network device. The first DMRS is to prevent the channel from being estimated by the first DMRS, resulting in an error in channel state estimation, thereby causing decoding errors in the received data.

Optionally, the first DMRS is processed by the first sequence, and when the access network device sends the first DMRS to the first terminal device (such as the terminal device of the eMBB service) on the preset time-frequency resource, the access network device The third DMRS processed by the second sequence may be sent to the second terminal device (such as the terminal device of the URLLC service) on the third time-frequency resource. The preset time-frequency resource includes a third time-frequency resource, the length of the second sequence is smaller than the length of the first sequence, and the second sequence is orthogonal to the target sub-sequence of the first sequence, and the length of the target sub-sequence is the second The lengths of the sequences are equal. That is, the first DMRS and the third DMRS multiplex the third time-frequency resource. Optionally, the first sequence and the second sequence may be a time domain sequence or a frequency domain sequence, or a time domain frequency domain mixed sequence. The principle of how to process the first DMRS by the first sequence and how the access network device passes the second sequence to the third DMRS is similar to the principle of the embodiment described in FIG. 7. For details, refer to the implementation described in FIG. For example, it will not be described here.

It can be seen that, by using the method described in FIG. 15, the access network device may send, to the first terminal device, indication information indicating whether the first time-frequency resource is sent to the first terminal device, and the preset time-frequency The resource sends the first DMRS to the first terminal device. After the first terminal device receives the indication information, the first DMRS may be received by the default preset time-frequency resource of the first terminal device, so that the channel state is correctly estimated by using the first DMRS.

An embodiment of the present application provides an access network device, where the access network device has the access network device described in FIG. 3 in the foregoing method embodiment, and the access network device described in FIG. The function of the access network device or the behavior of the access network device described in FIG. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more units corresponding to the functions described above. The unit can be software and/or hardware. Based on the same inventive concept, the method and the beneficial effects of the method for accessing the network device in the foregoing method embodiments may be implemented by the method and the beneficial effects of the access network device. Therefore, the implementation of the access network device may be implemented. For the method embodiment of the access network device in the foregoing method embodiment, the repeated description is not repeated.

The embodiment of the present application provides a terminal device, which has the access network device described in FIG. 3 in the foregoing method embodiment, the access network device described in FIG. 7, and the access network device described in FIG. Or the function of the behavior of the first terminal device described in FIG. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more units corresponding to the functions described above. The unit can be software and/or hardware. Based on the same inventive concept, the implementation of the terminal device in the foregoing method embodiment and the beneficial effects thereof can be seen in the foregoing method embodiments. The method implementation manner of the terminal device is not repeated here.

Referring to FIG. 16, FIG. 16 is a schematic structural diagram of an access network device according to an embodiment of the present application. As shown in FIG. 16, the access network device 1600 includes a processor 1601, a memory 1602, and a communication interface 1604. The processor 1601, the memory 1602, and the communication interface 1604 are connected. Optionally, the access network device 1600 further includes a bus system 1603. The processor 1601, the memory 1602, and the communication interface 1604 are connected by a bus system 1603.

The processor 1601 may be a central processing unit (CPU), a general-purpose processor, a coprocessor, a digital signal processor (DSP), or an application-specific integrated circuit (ASIC). , field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. The processor 1601 can also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.

The bus system 1603 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus system 1603 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 16, but it does not mean that there is only one bus or one type of bus.

The communication interface 1604 is configured to implement communication with other network elements, such as the first terminal device or the second terminal device.

The processor 1601 invokes the program code stored in the memory 1602 to perform any one or more steps performed by the access network device described in FIG. 3, FIG. 7, FIG. 12 or FIG. 15 in the foregoing method embodiment.

Based on the same inventive concept, the principle for solving the problem of the access network device provided in this embodiment of the present application is similar to the method embodiment of the present application. Therefore, the implementation of the access network device can refer to the implementation of the method. Narration.

Referring to FIG. 17, FIG. 17 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. As shown in FIG. 17, the terminal device 1700 includes a processor 1701, a memory 1702, and a communication interface 1704. The processor 1701, the memory 1702, and the communication interface 1704 are connected. Optionally, the terminal device 1700 further includes a bus system 1703. The processor 1701, the memory 1702, and the communication interface 1704 are connected by a bus system 1703.

The processor 1701 may be a central processing unit (CPU), a general-purpose processor, a coprocessor, a digital signal processor (DSP), or an application-specific integrated circuit (ASIC). , field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. The processor 1701 can also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.

The bus system 1703 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus system 1703 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 17, but it does not mean that there is only one bus or one type of bus.

The communication interface 1704 is configured to implement communication with other network elements (such as access network devices, etc.).

The processor 1701 invokes the program code stored in the memory 1702 to perform any one or more steps performed by the terminal device described in FIG. 3, FIG. 7, FIG. 12 or FIG. 15 in the foregoing method embodiment.

Based on the same inventive concept, the principle of the terminal device to solve the problem in the embodiment of the present application is similar to the method embodiment of the present application. Therefore, the implementation of the terminal device can refer to the implementation of the method, and is not described here.

The embodiment of the present application further provides a communication system, where the system includes: an access network device and a terminal device, where: the access network device is configured to perform FIG. 3, FIG. 7, FIG. 12 or FIG. 15 in the foregoing method embodiment. The step performed by the access network device, the terminal device is configured to perform the steps performed by the terminal device in FIG. 3, FIG. 7, FIG. 12 or FIG. 15 in the foregoing method embodiment.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present application. range.

Claims

An information processing method, characterized in that the method comprises:

The access network device sends at least one of the first indication information and the second indication information to the first terminal device, where the first indication information is used to indicate whether to send to the second terminal device on the first time-frequency resource. a second demodulation reference signal DMRS, where the second indication information is used to indicate a transmission mode of the second DMRS, the second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is the The access network device sends the time-frequency resource of the first DMRS to the first terminal device.
The method of claim 1 further comprising:

The access network device sends the second DMRS to the second terminal device on the first time-frequency resource;

The access network device sends the first DMRS to the first terminal device on the second time-frequency resource;

The access network device sets a transmit power of the first DMRS on the first time-frequency resource to zero.
The method according to claim 1 or 2, wherein the first indication information is sent by physical layer control signaling.
The method according to any one of claims 1 to 3, wherein the second indication information is sent by physical layer control signaling or by media access control layer signaling or by radio resource control signaling.
An information processing method, characterized in that the method comprises:

The access network device sends the first demodulation reference signal DMRS processed by the first sequence to the first terminal device on the first time-frequency resource;

Transmitting, by the access network device, the second DMRS processed by the second sequence to the second terminal device, where the second time-frequency resource includes the first time-frequency resource, the first sequence The length of the second sequence is less than the length of the second sequence, and the first sequence is orthogonal to the target subsequence of the second sequence, and the length of the target subsequence is equal to the length of the first sequence.
The method of claim 5 wherein the method comprises:

The access network device sends sequence information to the first terminal device, where the sequence information is used to determine the first sequence.
The method according to claim 6, wherein the sequence information is transmitted through physical layer control signaling.
An information processing method, characterized in that the method comprises:

The first terminal device receives at least one of the first indication information and the second indication information that are sent by the access network device, where the first indication information is used to indicate whether the second terminal device is on the first time-frequency resource. Sending a second demodulation reference signal DMRS, where the second indication information is used to indicate a transmission mode of the second DMRS, the second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is The access network device sends the time-frequency resource of the first DMRS to the first terminal device.
The method according to claim 8, wherein the first indication information is sent by physical layer control signaling.
The method according to claim 8 or 9, wherein the second indication information is sent by physical layer control signaling or by media access control layer signaling or by radio resource control signaling.
An information processing method, characterized in that the method comprises:

The first terminal device receives the first demodulation reference signal DMRS that is processed by the access network device and is sent by the first time-frequency resource, where the second time-frequency resource includes the first time-frequency resource, and the second The time-frequency resource is used by the access network device to send the second DMRS processed by the second sequence to the second terminal device, where the length of the first sequence is smaller than the length of the second sequence, and the first sequence is The target subsequence of the second sequence is orthogonal, and the length of the target subsequence is equal to the length of the first sequence.
The method of claim 11 wherein said method comprises:

The first terminal device receives sequence information sent by the access network device, and the sequence information is used to determine the first sequence.
The method according to claim 12, wherein the sequence information is transmitted by physical layer control signaling.
An access network device, where the access network device includes:

a communication module, configured to send, to the first terminal device, at least one of the first indication information and the second indication information, where the first indication information is used to indicate whether the second terminal device is on the first time-frequency resource Sending a second demodulation reference signal DMRS, where the second indication information is used to indicate a transmission mode of the second DMRS, the second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is The communication module sends the time-frequency resource of the first DMRS to the first terminal device.
The access network device according to claim 14, wherein the access network device further comprises a processing module, wherein:

The communication module is further configured to send the second DMRS to the second terminal device on the first time-frequency resource;

The communication module is further configured to send the first DMRS to the first terminal device on the second time-frequency resource;

The processing module is configured to set a transmit power of the first DMRS on the first time-frequency resource to zero.
The access network device according to claim 14 or 15, wherein the first indication information is sent by physical layer control signaling.
The access network device according to any one of claims 14 to 16, wherein the second indication information is sent through physical layer control signaling or sent through a medium access control layer signaling or through a radio resource control signal. Order to send.
An access network device, where the access network device includes:

a communication module, configured to send the first demodulation reference signal DMRS processed by the first sequence to the first terminal device on the first time-frequency resource;

The communication module is further configured to send the second DMRS processed by the second sequence to the second terminal device on the second time-frequency resource, where the second time-frequency resource includes the first time-frequency resource, where the The length of a sequence is less than the length of the second sequence, and the first sequence is orthogonal to the target subsequence of the second sequence, and the length of the target subsequence is equal to the length of the first sequence.
The access network device of claim 18, wherein

The communication module is further configured to send sequence information to the first terminal device, where the sequence information is used to determine the first sequence.
The access network device according to claim 19, wherein the sequence information is sent by physical layer control signaling.
A terminal device, the terminal device includes:

a communication module, configured to receive at least one of the first indication information and the second indication information that are sent by the access network device, where the first indication information is used to indicate whether the second time terminal is on the first time-frequency resource The device sends a second demodulation reference signal DMRS, where the second indication information is used to indicate a transmission mode of the second DMRS, the second time-frequency resource includes the first time-frequency resource, and the second time-frequency resource is The access network device sends a time-frequency resource of the first DMRS to the communication module.
The terminal device according to claim 21, wherein the first indication information is sent by physical layer control signaling.
The terminal device according to claim 21 or 22, wherein the second indication information is sent by physical layer control signaling or by media access control layer signaling or by radio resource control signaling.
A terminal device, the terminal device includes:

a communication module, configured to receive a first demodulation reference signal DMRS that is processed by the access network device on the first time-frequency resource and that is processed by the first sequence, where the second time-frequency resource includes the first time-frequency resource, where The second time-frequency resource is used by the access network device to send the second DMRS processed by the second sequence to the second terminal device, where the length of the first sequence is smaller than the length of the second sequence, and the first sequence is Orthogonal to the target subsequence of the second sequence, the length of the target subsequence being equal to the length of the first sequence.
The terminal device according to claim 24, characterized in that

The communication module is further configured to receive sequence information sent by the access network device, where the sequence information is used to determine the first sequence.
The terminal device according to claim 25, wherein the sequence information is transmitted through physical layer control signaling.