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WO2018142549A1 - Dispositif de station de base, équipement terminal et procédé de transmission - Google Patents

Dispositif de station de base, équipement terminal et procédé de transmission Download PDF

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Publication number
WO2018142549A1
WO2018142549A1 PCT/JP2017/003846 JP2017003846W WO2018142549A1 WO 2018142549 A1 WO2018142549 A1 WO 2018142549A1 JP 2017003846 W JP2017003846 W JP 2017003846W WO 2018142549 A1 WO2018142549 A1 WO 2018142549A1
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WIPO (PCT)
Prior art keywords
control information
data
base station
unit
resource
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PCT/JP2017/003846
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English (en)
Japanese (ja)
Inventor
紅陽 陳
ジヤンミン ウー
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富士通株式会社
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Priority to PCT/JP2017/003846 priority Critical patent/WO2018142549A1/fr
Publication of WO2018142549A1 publication Critical patent/WO2018142549A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to a base station device, a terminal device, and a transmission method.
  • 5G is classified into eMBB (Enhanced Mobile BroadBand), Massive MTC (Machine Type Communications), and URLLC (Ultra-Reliable and Low Latency Communications). Support for many use cases is envisioned.
  • eMBB Enhanced Mobile BroadBand
  • Massive MTC Machine Type Communications
  • URLLC Ultra-Reliable and Low Latency Communications
  • URLLC aims to set the delay in the radio section of the user plane in the uplink and downlink to 0.5 milliseconds. This is a high requirement of less than 1/10 of LTE (Long Term Evolution) 4G wireless system.
  • LTE Long Term Evolution
  • URLLC must satisfy the above two requirements of ultra-high reliability and low delay at the same time.
  • URLLC data ultra-reliable and low-delay communication data
  • eMBB data other data
  • the disclosed technology has been made in view of the above point, and an object thereof is to provide a base station device, a terminal device, and a transmission method capable of suppressing an increase in power consumption for decoding control information. .
  • a base station apparatus in the present application includes a data generation unit that generates data, first control information that includes information on resource allocation to the data, and information that is used to demodulate the data.
  • a control information generating unit that generates second control information including the first control information, and mapping the first control information to a predetermined position of a resource constituting the transmission signal, and the data and the second control information to another position of the resource
  • a mapping unit that generates a transmission signal and a transmission unit that transmits the transmission signal generated by the mapping unit.
  • the base station device According to one aspect of the base station device, the terminal device, and the transmission method disclosed in the present application, it is possible to suppress an increase in power consumption for decoding control information.
  • FIG. 1 is a diagram illustrating a configuration of a radio communication system according to Embodiment 1.
  • FIG. 2 is a block diagram showing a configuration of the base station apparatus according to Embodiment 1.
  • FIG. 3 is a diagram illustrating a specific example of a resource configuration.
  • FIG. 4 is a diagram showing a specific example of resource allocation according to the first embodiment.
  • FIG. 5 is a flowchart showing a transmission process according to the first embodiment.
  • FIG. 6 is a block diagram illustrating a configuration of the user terminal device according to the first embodiment.
  • FIG. 7 is a flowchart showing reception processing according to the first embodiment.
  • FIG. 8 is a diagram illustrating a specific example of the arrangement of the first control information.
  • FIG. 1 is a diagram illustrating a configuration of a radio communication system according to Embodiment 1.
  • FIG. 2 is a block diagram showing a configuration of the base station apparatus according to Embodiment 1.
  • FIG. 3 is a diagram illustrating a specific
  • FIG. 9 is a block diagram showing a configuration of the base station apparatus according to Embodiment 2.
  • FIG. 10 is a diagram illustrating a specific example of resource allocation according to the second embodiment.
  • FIG. 11 is a flowchart showing a transmission process according to the second embodiment.
  • FIG. 12 is a block diagram showing a configuration of a user terminal apparatus according to Embodiment 2.
  • FIG. 13 is a flowchart showing a reception process according to the second embodiment. It is a figure explaining several hopping.
  • FIG. 14 is a diagram illustrating a specific example of the arrangement of control information according to another embodiment.
  • FIG. 15 is a diagram for explaining a control information mapping method.
  • FIG. 1 is a diagram illustrating a configuration of a radio communication system according to Embodiment 1.
  • FIG. 1 The radio communication system illustrated in FIG. 1 includes a base station device 100 and a plurality of user terminal devices 200.
  • the base station apparatus 100 transmits a signal including eMBB data and URLLC data to the user terminal apparatus 200, for example. That is, base station apparatus 100 allocates resources configured by time and frequency to eMBB data and URLLC data destined for each of a plurality of user terminal apparatuses 200, and generates a transmission signal.
  • the base station apparatus 100 arranges the URLLC data in the resource area allocated to the eMBB data. That is, when URLLC data is generated, resources are allocated to URLLC data instead of eMBB data or in addition to eMBB data, for example, in mini-slot units obtained by subdividing slots. Thereby, transmission of URLLC data can be started for each mini-slot, which is a time unit shorter than the slot.
  • the base station apparatus 100 arranges control information indicating whether or not URLLC data is included in each mini-slot. Similarly, base station apparatus 100 arranges control information related to MCS (Modulation Coding Scheme) and retransmission of URLLC data in a minislot in which URLLC data is included. Specifically, base station apparatus 100 arranges the minimum necessary control information such as control information indicating whether URLLC data is included in the minislot as the first control information in the first resource of each minislot. To do. Then, the base station apparatus 100 multiplexes the control information related to MCS, retransmission, etc. with the URLLC data as second control information, and arranges it in each minislot.
  • MCS Modulation Coding Scheme
  • the user terminal device 200 can omit the demodulation of the second control information in a minislot that does not include URLLC data.
  • the user terminal device 200 can acquire information on resource allocation for the second control information and the URLLC data by demodulating the first control information having a relatively small size, and whether there is control information addressed to the own device. It is possible to minimize the decoding in a state where is unknown.
  • User terminal apparatus 200 receives a signal including eMBB data and URLLC data transmitted from base station apparatus 100. Specifically, the user terminal device 200 is classified into one that uses a service related to eMBB, one that uses a service related to URLLC, and one that uses a service related to both eMBB and URLLC. Based on the control information included in the received signal, the user terminal device 200 that uses the service related to eMBB identifies eMBB data addressed to itself and demodulates the eMBB data.
  • the user terminal device 200 that uses the service related to URLLC determines whether URLLC data is included in the received signal based on the control information included in the received signal. If URLLC data is included, control is performed. Based on the information, it demodulates URLLC data addressed to its own device. Further, the user terminal device 200 that uses services related to both eMBB and URLLC demodulates eMBB data and demodulates URLLC data in the same manner as described above.
  • FIG. 2 is a block diagram showing a configuration of base station apparatus 100 according to Embodiment 1.
  • the base station apparatus 100 illustrated in FIG. 2 includes a processor 100a, a memory 100b, and a wireless transmission unit 100c.
  • the processor 100a includes, for example, a CPU (Central Processing Unit), an FPGA (Field Programmable Gate Array), or a DSP (Digital Signal Processor), and performs overall control of the base station apparatus 100 as a whole.
  • the processor 100a includes a scheduler unit 110, an eMBB data generation unit 120, a URLLC data generation unit 130, a control information generation unit 140, a mapping unit 150, an IFFT (Inverse Fast Fourier Transform) unit 160, and A CP (Cyclic Prefix) adding unit 170 is included.
  • a CPU Central Processing Unit
  • FPGA Field Programmable Gate Array
  • DSP Digital Signal Processor
  • the scheduler unit 110 executes scheduling for allocating resources to eMBB data and URLLC data addressed to a plurality of user terminal devices 200. Specifically, for example, the scheduler unit 110 estimates channel states between each of the plurality of user terminal devices 200 and determines resources to be allocated to eMBB data addressed to each user terminal device 200 according to the channel states. Execute. Further, the scheduler unit 110 determines whether or not URLLC data addressed to any of the user terminal devices 200 has been generated. If URLLC data has been generated, the scheduler unit 110 executes URLLC scheduling that determines resources to be allocated to the URLLC data. .
  • the eMBB data generation unit 120 generates eMBB data addressed to each user terminal device 200 in accordance with the eMBB scheduling by the scheduler unit 110. That is, the eMBB data generation unit 120 encodes and modulates eMBB data addressed to each user terminal device 200. Then, the eMBB data generation unit 120 outputs the generated eMBB data to the mapping unit 150.
  • the URLLC data generation unit 130 generates URLLC data addressed to each user terminal device 200 in accordance with URLLC scheduling by the scheduler unit 110. That is, the URLLC data generation unit 130 encodes and modulates URLLC data addressed to each user terminal device 200. Further, the URLLC data generation unit 130 acquires second control information related to MCS and retransmission of URLLC data from the control information generation unit 140, and multiplexes the URLLC data and the second control information. Then, the URLLC data generation unit 130 outputs the obtained multiplexed data to the mapping unit 150.
  • the control information generation unit 140 generates eMBB and URLLC control information according to the eMBB scheduling and URLLC scheduling by the scheduler unit 110. Specifically, the control information generation unit 140 generates eMBB control information including information specifying resources allocated to the eMBB data addressed to each user terminal device 200 and information indicating the MCS and transmission power of the eMBB data. . In addition, the control information generation unit 140 generates URLLC first control information including information specifying presence / absence of URLLC data and resources allocated to the URLLC data. Further, the control information generation unit 140 generates second control information of URLLC related to MCS and retransmission of URLLC data. Then, the control information generation unit 140 outputs the eMBB control information and the first control information to the mapping unit 150, and outputs the second control information to the URLLC data generation unit 130.
  • the mapping unit 150 maps eMBB data, multiplexed data, eMBB control information, and first control information to resources, and generates a transmission signal. That is, the mapping unit 150 arranges eMBB data, multiplexed data, eMBB control information, and first control information in resources according to scheduling.
  • FIG. 3 is a diagram illustrating a specific example of the configuration of resources to be mapped.
  • FIG. 3 shows the resources of one subframe 301, and the subframe 301 has two slots 302.
  • Each slot 302 is further subdivided into mini slots 303, and the mini slots 303 include a plurality of symbols.
  • the mini-slot 303 includes a plurality of resource blocks including a plurality of symbols in the time direction and a plurality of subcarriers in the frequency direction. That is, the minislot 303 is composed of resources in which a plurality of resource blocks are arranged in the time direction and the frequency direction.
  • the minislot 303 is a unit of URLLC data scheduling. When URLLC data to be transmitted is generated, this URLLC data is mapped to the nearest minislot 303.
  • FIG. 4 is a diagram showing a specific example of resource allocation according to the first embodiment.
  • a specific example of resource allocation in six minislots of minislots 311 to 316 is shown.
  • the minislot 311 is a minislot to which the eMBB control information is mapped, and the eMBB control information generated by the control information generation unit 140 is mapped to the resource of the minislot 311.
  • the mini slots 312 to 316 are mini slots to which eMBB data or URLLC data is mapped. In FIG. 4, eMBB data is mapped to minislots 312, 316, and URLLC data is mapped to minislots 313-315.
  • the eMBB data generated by the eMBB data generation unit 120 is mapped to the minislots 312 and 316, and the first control information 321 and 323 indicating that the URLLC data is not included in these minislots 312 and 316 is stored in each minislot 312 and 316 Mapped to the beginning of the slot. Therefore, the user terminal device 200 refers to the first control information 321 and 323 arranged at the head of the minislots 312 and 316, so that the minislots 312 and 316 contain no URLLC data, 2. Grasp that the demodulation of control information is unnecessary. As a result, the processing load related to demodulation and decoding of control information can be reduced, and an increase in power consumption can be suppressed.
  • the URLLC data generated by the URLLC data generation unit 130 and multiplexed with the second control information is mapped to the minislots 313 to 315, and the first control information indicating that the URLLC data is included in these minislots 313 to 315.
  • 322 is mapped to the head of the minislot 313.
  • the first control information 322 mapped to the head of the minislot 313 specifies the resources of the minislots 313 to 315 in which the URLLC data is arranged and the resource in which the second control information 331 is arranged.
  • the user terminal device 200 grasps that the URLLC data is included in the minislots 313 to 315 by referring to the first control information 322 arranged at the head of the minislot 313.
  • the user terminal device 200 can specify a resource in which the second control information 331 including information used for demodulating URLLC data is arranged.
  • the IFFT unit 160 performs inverse fast Fourier transform on the transmission signal generated by the mapping unit 150 to generate a time-domain transmission signal. Then, IFFT section 160 outputs the transmission signal to CP adding section 170.
  • CP adding section 170 adds a CP to the transmission signal output from IFFT section 160. Then, CP adding section 170 outputs the transmission signal with the CP added to radio transmitting section 100c.
  • the memory 100b includes, for example, a RAM (Random Access Memory) or a ROM (Read Only Memory), and stores various types of information when processing is executed by the processor 100a.
  • a RAM Random Access Memory
  • ROM Read Only Memory
  • the wireless transmission unit 100c performs wireless transmission processing such as D / A (Digital / Analog) conversion and up-conversion on the transmission signal output from the CP adding unit 170, for example. And the wireless transmission part 100c transmits a transmission signal via an antenna.
  • wireless transmission processing such as D / A (Digital / Analog) conversion and up-conversion on the transmission signal output from the CP adding unit 170, for example.
  • the wireless transmission part 100c transmits a transmission signal via an antenna.
  • the scheduler unit 110 executes eMBB scheduling for determining resources, coding rate, and modulation scheme to be allocated to eMBB data addressed to each user terminal device 200 (step S101).
  • This eMBB scheduling is executed based on, for example, a downlink channel state reported from each user terminal device 200.
  • it is determined to arrange eMBB data addressed to the user terminal apparatus 200 in the resources of each minislot.
  • the result of the eMBB scheduling is notified to the control information generation unit 140, and the eMBB control information is generated by the control information generation unit 140.
  • the generated eMBB control information is output to mapping section 150.
  • the scheduler unit 110 determines whether or not URLLC data addressed to any user terminal device 200 has been generated (step S102). If URLLC data to be transmitted is generated as a result of the determination (Yes in step S102), the scheduler unit 110 executes URLLC scheduling for determining the resources to be allocated to the URLLC data, the coding rate, and the modulation method ( Step S103). This URLLC scheduling is executed based on, for example, the downlink channel state reported from each user terminal device 200. In URLLC scheduling, it is determined that URLLC data addressed to the user terminal device 200 is arranged in the resources of each minislot.
  • the URLLC scheduling result is notified to the URLLC data generation unit 130 and the control information generation unit 140, and the control information generation unit 140 generates first control information indicating that there is URLLC data (step S104). That is, the first control information that specifies the resource in which the URLLC data is arranged and the resource in which the second control information used for demodulating the URLLC data is arranged is generated. The generated first control information is output to mapping section 150.
  • control information generation unit 140 generates second control information related to, for example, MCS and retransmission of URLLC data (step S105).
  • the second control information includes control information used for demodulating URLLC data, for example, information on unused resources, information specifying transmission power in the uplink, information requesting transmission of a reference signal, uplink information Information that permits transmission may be included.
  • the generated second control information is output to the URLLC data generation unit 130.
  • the URLLC data generation unit 130 generates URLLC data according to URLLC scheduling, and the URLLC data and the second control information are multiplexed (step S106). Then, the obtained multiplexed data is output to the mapping unit 150.
  • step S102 No if no URLLC data to be transmitted is generated as a result of the determination in step S102 (step S102 No), the eMBB scheduling result is notified to the eMBB data generation unit 120 and the control information generation unit 140. Then, the control information generation unit 140 generates first control information indicating that there is no URLLC data (step S107). The generated first control information is output to mapping section 150. Further, the eMBB data generation unit 120 generates eMBB data according to the eMBB scheduling (step S108) and outputs it to the mapping unit 150.
  • mapping of the eMBB control information, the eMBB data, the first control information, the second control information, and the URLLC data is performed by the mapping unit 150 (step S109). That is, as shown in FIG. 4, eMBB control information is mapped to the mini-slot 311 at the head of the slot, and eMBB data is mapped to the mini-slots 312 and 316 when URLLC data is not generated. First control information 321 and 323 indicating that there is no URLLC data is mapped to the heads of mini slots 312 and 316 to which eMBB data is mapped.
  • multiplexed data obtained by multiplexing the URLLC data and the second control information 331 is mapped to the minislots 313 to 315 when the URLLC data is generated. Then, at the head of the minislot 313, the first control information 322 that specifies the resource in which the URLLC data is arranged and the resource in which the second control information 331 is arranged is mapped. Thereby, a transmission signal is generated.
  • the transmission signal is subjected to inverse fast Fourier transform by the IFFT unit 160 (step S110) and converted to a time domain transmission signal. Then, CP is added to the transmission signal by CP adding section 170 (step S111), and radio transmission processing is performed on the transmission signal by radio transmission section 100c (step S112). Thereafter, the transmission signal is transmitted to the user terminal device 200 via the antenna (step S113).
  • the second control information indicating whether or not resources are allocated to the URLLC data, the first control information including only the minimum necessary information is transmitted at the head of each mini-slot, and the MCS used for the demodulation of the URLLC data.
  • Control information is multiplexed with URLLC data and transmitted.
  • the user terminal device 200 detects the presence or absence of URLLC data addressed to itself by detecting the first control information having a relatively small size at the head of each mini-slot. 2 Demodulation of control information can be omitted.
  • the user terminal device 200 can specify the resource allocated to the second control information used for demodulation of the URLLC data based on the first control information.
  • the user terminal device 200 can demodulate and decode the URLLC data addressed to the user device 200, and increase power consumption for decoding the control information. Can be suppressed.
  • FIG. 6 is a block diagram showing a configuration of user terminal apparatus 200 according to Embodiment 1.
  • a user terminal device 200 illustrated in FIG. 6 is a user terminal device that uses a service related to URLLC, and includes a wireless reception unit 200a, a processor 200b, and a memory 200c.
  • the radio reception unit 200a receives a signal via an antenna and performs radio reception processing such as down-conversion and A / D (Analog / Digital) conversion on the received signal. Then, the radio reception unit 200a outputs a reception signal to the processor 200b.
  • radio reception processing such as down-conversion and A / D (Analog / Digital) conversion on the received signal. Then, the radio reception unit 200a outputs a reception signal to the processor 200b.
  • the processor 200b includes, for example, a CPU, FPGA, DSP, or the like, and performs overall control of the entire user terminal device 200. Specifically, the processor 200b includes a CP removal unit 210, an FFT (Fast Fourier Transform) unit 220, a first control information demodulation unit 230, a second control information demodulation unit 240, and a URLLC data demodulation unit 250. .
  • CP removing section 210 removes the CP added to the received signal. CP removing section 210 then outputs the received signal after CP removal to FFT section 220.
  • the FFT unit 220 performs a fast Fourier transform on the received signal output from the CP removing unit 210 and converts the received signal into a frequency domain received signal. Then, FFT section 220 outputs the received signal to first control information demodulation section 230, second control information demodulation section 240, and URLLC data demodulation section 250.
  • the first control information demodulator 230 demodulates the first control information arranged at the head of each mini-slot in the received signal. As a result, the first control information demodulator 230 determines the presence or absence of URLLC data. If there is URLLC data, the first control information demodulator 230 identifies the resources allocated to the URLLC data and the second control information. 240 is notified.
  • the second control information demodulation unit 240 demodulates the second control information. As a result, the second control information demodulator 240 acquires control information related to, for example, MCS and retransmission of URLLC data. Then, second control information demodulator 240 outputs control information used for demodulating URLLC data to URLLC data demodulator 250.
  • the second control information demodulator 240 does not operate and reduces the processing load.
  • the URLLC data demodulator 250 demodulates the URLLC data in the received signal based on the demodulation results of the first control information and the second control information. That is, the URLLC data demodulator 250 identifies the resource allocated to the URLLC data addressed to itself from the first control information, and uses the URLLC data arranged in this resource as information such as MCS included in the second control information. Use to demodulate. As a result, the URLLC data demodulator 250 acquires URLLC data addressed to itself.
  • the signal transmitted from the base station apparatus 100 is received via the antenna (step S201), and the wireless reception unit 200a performs wireless reception processing on the received signal (step S202). Then, CP added to the received signal is removed by CP removing section 210 (step S203), and the received signal is fast Fourier transformed by FFT section 220 (step S204), thereby obtaining a received signal in the frequency domain. It is done.
  • the first control information is demodulated by the first control information demodulator 230 (step S205). Then, based on the demodulation result of the first control information, it is determined whether or not resources are allocated to the URLLC data (step S206). If no resource is assigned to the URLLC data as a result of this determination (No at step S206), the URLLC data addressed to the user terminal device 200 is not included in the received signal, and the process ends. For this reason, a process is complete
  • step S206 Yes when resources are allocated to the URLLC data (step S206 Yes), the resources allocated to the URLLC data and the second control information are specified based on the demodulation result of the first control information.
  • the identified resource is notified to the second control information demodulator 240, and the second control information demodulator 240 demodulates the second control information (step S207).
  • the resource allocated to the second control information is specified by the first control information, it is not necessary to detect the second control information by blind decoding, and the processing load of demodulation and decoding of the second control information Is relatively small.
  • the URLLC data demodulator 250 When the second control information is demodulated, the URLLC data demodulator 250 is notified of the resources allocated to the URLLC data and the MCS information used for demodulating the URLLC data. Then, the URLLC data demodulator 250 demodulates the URLLC data (step S208).
  • the first control information indicating the allocation of resources to the URLLC data is arranged at the head of the minislot, and the second control information including the control information used for demodulating the URLLC data. Is multiplexed with URLLC data and placed in the minislot. For this reason, the user terminal device can grasp the presence or absence of URLLC data by demodulating the first control information having a relatively small size, and omits the demodulation of the second control information when there is no URLLC data. be able to. Further, when there is URLLC data, the user terminal device can specify the resource allocated to the second control information based on the demodulation result of the first control information. As a result, in the user terminal device, the processing load related to demodulation and decoding of control information can be reduced, and an increase in power consumption for decoding control information can be suppressed.
  • a plurality of pieces of information may be included in the first control information in addition to information on allocation of resources to URLLC data. These pieces of information may be distributed and arranged in resources allocated to the first control information. Specifically, for example, as shown in FIG. 8, when a resource allocated to the first control information has a plurality of resource blocks 341 to 346, for example, resource allocation to URLLC data is assigned to resource blocks 341, 343, and 345, for example. Map the information. Then, for example, other information is mapped to the resource blocks 342, 344, and 346.
  • the effect of frequency diversity can be obtained and the reliability of the first control information can be improved.
  • the first control information can share some allocated resource blocks with the URLLC data. For example, a relatively large number of resource blocks such as 16 or 32 may be allocated to the first control information, and the coding rate of the first control information may be lowered. Thereby, the reliability of 1st control information can be improved.
  • Embodiment 2 The feature of Embodiment 2 is that the first control information is arranged at the head of the slot, and the second control information is multiplexed with the eMBB data.
  • Embodiment 2 Since the configuration of the wireless communication system according to Embodiment 2 is the same as that of Embodiment 1 (FIG. 1), description thereof is omitted.
  • FIG. 9 is a block diagram showing a configuration of base station apparatus 100 according to Embodiment 2. 9, the same parts as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.
  • a base station apparatus 100 illustrated in FIG. 9 includes a control information generation unit 180 and a mapping unit 190 instead of the control information generation unit 140 and the mapping unit 150 of the base station apparatus 100 illustrated in FIG.
  • the control information generation unit 180 generates eMBB control information according to the eMBB scheduling by the scheduler unit 110. Specifically, the control information generation unit 180 generates first control information including information for identifying resources allocated to eMBB data addressed to each user terminal device 200 and slot configuration information. In addition, the control information generation unit 180 generates second control information including information indicating the MCS and transmission power of eMBB data. Then, the control information generation unit 180 outputs the first control information to the mapping unit 190, and outputs the second control information to the eMBB data generation unit 120. The second control information is multiplexed with the eMBB data by the eMBB data generation unit 120.
  • the mapping unit 190 maps the eMBB data, the first control information, and the second control information to resources, and generates a transmission signal. That is, the mapping unit 190 arranges the eMBB data, the first control information, and the second control information in resources according to scheduling.
  • FIG. 10 is a diagram illustrating a specific example of resource allocation according to the second embodiment.
  • FIG. 10 shows a specific example of resource allocation in a slot having six minislots.
  • the first control information 401 is mapped to the first mini-slot of the slot.
  • the first control information 401 includes information on resources allocated to eMBB data, information on slot configurations, and the like. That is, the first control information 401 includes the minimum necessary control information used in common by all user terminal devices 200, and is relatively small in size.
  • the user terminal device 200 grasps, for example, that the slot has six minislots and that the second control information 402 is multiplexed with the eMBB data. Can do.
  • the processing load may be small.
  • the second control information 402 is mapped to an area where the eMBB data of the slot is arranged.
  • the second control information 402 includes information unique to each user terminal device 200 such as information indicating the MCS and transmission power of eMBB data. Therefore, the user terminal device 200 can demodulate the eMBB data addressed to the user device by demodulating and decoding the second control information.
  • the scheduler unit 110 executes eMBB scheduling for determining resources, coding rate, and modulation scheme to be allocated to eMBB data addressed to each user terminal device 200 (step S101).
  • the result of the eMBB scheduling is notified to the control information generation unit 180, and the control information generation unit 180 includes first control information including information for identifying resources allocated to the eMBB data addressed to each user terminal device 200 and slot configuration information. Is generated (step S301). Then, the first control information is output to the mapping unit 190.
  • control information generation unit 180 Similarly to the generation of the first control information, the control information generation unit 180 generates the second control information including information indicating the MCS and transmission power of the eMBB data (step S302). Then, the second control information is output to the eMBB data generation unit 120.
  • the eMBB data generation unit 120 generates eMBB data according to eMBB scheduling, and the eMBB data and the second control information are multiplexed (step S303). Then, the eMBB data and the second control information are output to the mapping unit 190.
  • the first control information, the second control information, and the eMBB data are mapped to the slot resource by the mapping unit 190 (step S304). That is, as shown in FIG. 10, the first control information 401 is mapped to the first mini-slot of the slot, and the second control information 402 and eMBB data are mapped to each mini-slot in the slot. Thereby, a transmission signal is generated.
  • the transmission signal is subjected to inverse fast Fourier transform by the IFFT unit 160 (step S110) and converted to a time domain transmission signal. Then, CP is added to the transmission signal by CP adding section 170 (step S111), and radio transmission processing is performed on the transmission signal by radio transmission section 100c (step S112). Thereafter, the transmission signal is transmitted to the user terminal device 200 via the antenna (step S113).
  • first control information including only necessary minimum information is transmitted in the mini-slot at the head of the slot, and the MCS and transmission power of eMBB data are related.
  • the second control information is multiplexed with eMBB data and transmitted. For this reason, the user terminal apparatus 200 can identify the resources allocated to the eMBB data addressed to the own apparatus and the second control information by detecting the first control information having a relatively small size at the head of the slot. .
  • the user terminal device 200 can demodulate and decode the eMBB data addressed to the user terminal device 200, and increase power consumption for decoding the control information. Can be suppressed.
  • FIG. 12 is a block diagram showing a configuration of user terminal apparatus 200 according to Embodiment 2.
  • a user terminal apparatus 200 illustrated in FIG. 12 is a user terminal apparatus that uses a service related to eMBB, and, similarly to the user terminal apparatus 200 (FIG. 6) according to the first embodiment, a radio reception unit 200a, a processor 200b, and a memory 200c.
  • FIG. 12 the same parts as those in FIG.
  • the first control information demodulator 260 demodulates the first control information arranged at the head of the slot in the received signal. As a result, the first control information demodulator 260 identifies the eMBB data addressed to itself and the resources allocated to the second control information, and notifies the second control information demodulator 270 of it.
  • the second control information demodulation unit 270 demodulates the second control information.
  • the second control information demodulator 270 acquires control information related to, for example, MCS and transmission power of eMBB data.
  • second control information demodulation section 270 outputs control information used for demodulating eMBB data to eMBB data demodulation section 280.
  • the eMBB data demodulation unit 280 demodulates eMBB data in the received signal based on the demodulation results of the first control information and the second control information. That is, the eMBB data demodulation unit 280 identifies the resource allocated to the eMBB data addressed to itself from the first control information, and sets the eMBB data arranged in this resource to information such as MCS included in the second control information. Use to demodulate. As a result, the eMBB data demodulator 280 acquires eMBB data addressed to itself.
  • the signal transmitted from the base station apparatus 100 is received via the antenna (step S201), and the wireless reception unit 200a performs wireless reception processing on the received signal (step S202). Then, CP added to the received signal is removed by CP removing section 210 (step S203), and the received signal is fast Fourier transformed by FFT section 220 (step S204), thereby obtaining a received signal in the frequency domain. It is done.
  • the first control information demodulator 260 demodulates the first control information (step S401). Then, based on the demodulation result of the first control information, the resource allocated to the second control information is specified, and the specified resource is notified to the second control information demodulation unit 270. In response to this notification, the second control information demodulator 270 demodulates the second control information (step S402). As described above, since the resource allocated to the second control information is specified by the first control information, it is not necessary to detect the second control information by blind decoding, and the processing load of demodulation and decoding of the second control information Is relatively small.
  • MCS information used for demodulating the eMBB data is notified to the eMBB data demodulator 280. Then, the eMBB data demodulation unit 280 demodulates the eMBB data (Step S403).
  • the first control information indicating the allocation of resources to the eMBB data is arranged at the head of the slot, and the second control information including the control information used for demodulating the eMBB data is Multiplexed with eMBB data and arranged in each mini-slot in the slot.
  • the user terminal device can identify the resource allocated to the second control information by demodulating the first control information having a relatively small size, and can reduce the processing load of blind decoding. .
  • the processing load related to demodulation and decoding of control information can be reduced, and an increase in power consumption for decoding control information can be suppressed.
  • the first control information and the second control information are arranged in units of one slot.
  • the first control information and the second control information are arranged in units of a plurality of slots. May be.
  • the first control information 511 is arranged in the first mini-slot of the slot 501 with two slots 501 and 502 as a unit.
  • the first control information 511 indicates resource allocation to the eMBB data in the two slots 501 and 502 and resource allocation to the second control information 521 across the two slots 501 and 502.
  • the first control information and the second control information may be mapped by different methods. Specifically, the first control information is sequentially mapped to the resource blocks arranged in the frequency direction, for example, as shown in the upper diagram of FIG. 15, while the second control information is mapped, for example, as shown in the lower diagram of FIG. You may map in order to the resource block arranged in a time direction.
  • information such as the number of resource blocks constituting the first control information may be broadcast as system information, for example.
  • information such as the number of resource blocks constituting the second control information may be notified by RRC (Radio Resource Control) signaling, for example.
  • RRC Radio Resource Control
  • a predetermined frequency band determined in advance may be allocated to the second control information.
  • the modulation method or the like of the second control information may be notified by the first control information, but if not notified by the first control information, the second control information may be notified by the predetermined predetermined modulation method.
  • the control information may be modulated. In this case, the reliability of the second control information can be improved by using a modulation method that hardly causes an error, such as QPSK (Quadrature Phase Shift Keying) modulation.
  • QPSK Quadrature Phase Shift Keying
  • the first control information may be transmitted by a directional beam having a relatively large beam width
  • the second control information may be transmitted by a directional beam having a relatively small beam width.
  • the second control information may include control information for each user terminal device 200, if the direction of the destination user terminal device 200 is known, the second control is performed by a directional beam that faces the direction of the user terminal device 200. By transmitting information, it is possible to reduce interference with other user terminal devices 200. Furthermore, the error resistance of the second control information can be improved by making the transmission power of the second control information larger than the transmission power of the URLLC data or eMBB data.
  • an individual or common reference signal can be used as a reference signal for demodulating the first control information.
  • the search space for detecting the first control information can be an individual or common search space.
  • a reference signal for demodulating data can be used as a reference signal for demodulating the second control information.
  • the search space for detecting the second control information can be an individual search space for each user terminal device 200.
  • the reference signals for demodulating the first control information and the second control information may be mapped to predetermined positions by the mapping unit of the base station apparatus 100, respectively.
  • the first control information includes slot configuration and slot type information indicating whether or not the slot includes a mini-slot
  • the slot configuration information is included in the user terminal device 200 in the cell of the base station device 100 or a predetermined information. You may make it alert

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un dispositif de station de base (100) comprenant : des unités de génération de données (120, 130) pour générer des données; des unités de génération d'informations de commande (140, 180) pour générer des premières informations de commande qui comprennent des informations concernant l'allocation de ressources par rapport aux données et des secondes informations de commande qui comprennent des informations utilisées pour démoduler les données; des unités de mise en concordance (150, 190) pour mettre en concordance les premières informations de commande avec une position prescrite d'une ressource qui constitue un signal de transmission, mettre en concordance les données et les secondes informations de commande avec d'autres positions de la ressource, et générer le signal de transmission; et une unité de transmission (100c) pour transmettre le signal de transmission généré par les unités de mise en concordance.
PCT/JP2017/003846 2017-02-02 2017-02-02 Dispositif de station de base, équipement terminal et procédé de transmission WO2018142549A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012508483A (ja) * 2008-11-04 2012-04-05 ノーテル・ネットワークス・リミテッド 無線通信方法、移動局及び基地局

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012508483A (ja) * 2008-11-04 2012-04-05 ノーテル・ネットワークス・リミテッド 無線通信方法、移動局及び基地局

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
FUJITSU: "DL control channel related to multiplexing eMBB and URLCC", 3GPP TSG-RAN WG1#87 RI-1611465, 4 November 2016 (2016-11-04), XP051189078 *
MEDIATEK: "URLLC and eMBB DL Multiplexing using CRC", 3GPP TSG-RAN WG1#87 R1-1612149, 5 November 2016 (2016-11-05), XP051190320 *
SAMSUNG: "Multiplexing URLLC and eMBB in DL", 3GPP TSG-RAN WG1#86B RI-1609059, 1 October 2016 (2016-10-01), XP051159255 *

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