WO2008131683A1 - Triggering and data distribution method of dispatch information transmission in enhanced uplink, and the equipment thereof - Google Patents

Abstract

A triggering and data distribution method of dispatch information transmission in enhanced uplink, and the equipment thereof are provided in the present invention, in which a timer T used for triggering dispatch information when the user has authorization resource is configured in a user terminal, the user terminal will forwardly trigger transmission of the dispatch information, and send the dispatch information in a protocol data unit (PDU) of enhanced media access control (E-MAC); when the user terminal does not forwardly trigger the dispatch information, the user terminal will send the dispatch information in the PDU of E-MAC if the stuffing bits that have been multiplexed into the PDU of the E-MAC by buffer data in logic channel could hold the dispatch information; the user terminal initiates or re-initiates the timer T when it sends dispatch information on the authorization resource every time. The present invention provides a different distribution method and equipment to the question of whether triggering dispatch information transmission forwardly. System efficiency and resource utilization factor could be improved.

Description

 Trigger and data distribution method and device for enhancing uplink scheduling information transmission

Technical field

 The present invention relates to the field of wireless communications, and more particularly to a triggering and data allocating method and apparatus for enhancing uplink scheduling information transmission, which is used to determine a triggering mechanism of scheduling information, and can trigger reporting of scheduling information according to whether it is necessary to trigger scheduling information. Allocate data load. Background technique

 The Enhanced Uplink is commonly referred to as HSUPA (High Speed Uplink Packet Access), which is designed to efficiently support the efficiency of the uplink through advanced technologies to effectively support web browsing, video, multimedia information and other based IP business. Currently 3GPP (3rd Generation Mobile Communication Partner Project) TDD (Time Division Duplex System), including TD-CDMA (Time Division Code Division Multiple Access) and TD-SCDMA (Time Division Synchronous Code Division Multiple Access) have completed HSUPA Standardization work.

 In the TDD HSUPA system, the enhanced uplink services are classified into scheduling services and non-scheduled services. The resources of the non-scheduled services are allocated by the SRNC (Service Radio Network Controller) for the UE (User Equipment). The allocation mode is the same as the existing dedicated channel allocation mode. In the scheduling service, the SRNC allocates an enhanced uplink resource pool for the Node B (Node B, base station), and the Node B schedules configuration resources for the UE.

 In the enhanced uplink service, a new transport channel E-DCH (Enhanced Uplink Dedicated Transport Channel) is added. The TTI (Transmission Time Interval) of the E-DCH is 5 ms, and the data mapped to the E-DCH transport channel is called MAC. -e PDU (Enhanced Medium Access Control Protocol Data Unit), one or more MAC-d streams can be multiplexed within a packet.

The MAC-d flow is a unit of data flow above the enhanced uplink traffic transmission channel, and one or more logical channels are mapped on the MAC-d flow. The RNC configures one or more MAC-d flows according to the service condition of the UE, and each MAC-d flow is configured with a set of HARQ Profile parameters, including power offset and maximum retransmission times. Maximum retransmission timer to ensure transmission quality and delay requirements. In addition, in order to improve transmission efficiency, the upper layer will also be for each MAC-d. The flow configures a multiplex list that specifies other MAC-d flows that can be transmitted in the same MAC-e PDU as the MAC-d flow.

 The physical channels associated with E-DCH are:

 1. E-PUCH (E-DCH uplink physical channel, also called enhanced uplink physical channel), is a traffic channel for carrying an E-DCH transmission channel;

 2. E-UCCH (Enhanced Uplink Control Channel): It is a physical layer control channel, which is carried in the physical layer indication field of the E-PUCH. The control information carried includes: E-TFCI (Enhanced Uplink Transport Format Combination Index) And HARQ information (including process ID and retransmission times information);

 3. The E-AGCH channel (E-DCH absolute grant channel) is a control channel used for Node B transmission grant information, including allocating E-PUCH time slots, code channels, power, and the like for a single UE;

 4. E-RUCCH (E-DCH random access uplink control channel, that is, enhanced uplink random access uplink control channel) is a physical layer control channel used by the UE to transmit auxiliary scheduling without authorization. Related information, E-RUCCH uses random access physical channel resources; and five, E-HICH (E-DCH hybrid automatic repeat request indication channel), is a physical layer control channel for Node B to carry HARQ (mixed Automatic retransmission request) indication information.

 1 is a hierarchical structure diagram of an RLC layer to a physical layer of a UE side of an enhanced uplink access system. Compared with the original system, a new MAC-es/e entity is added. The functions of the entity include: storing and retransmitting the MAC-e PDU; selecting the E-TFC according to the authorization information on the network side (enhanced transport format combination) And multiplexed data to form a MAC-e PDU according to the E-TFC selection result.

 Since only one E-DCH transmission channel is mapped to the E-PUCH physical channel in one TTI, selecting "Enhanced Transmission Format Combination" essentially selects only the transmission format of an E-DCH transmission channel. In TD-CDMA systems, the choice of E-TFC includes determining the transport block length (ie, the length of the MAC-e PDU packet), the spreading code, and the modulation scheme. In the TD-SCDMA system, the E-TFC selection is only This includes determining the length of the transport block and the modulation method. According to the selection result of the E-TFC, the MAC-e entity allocates data from the logical channel buffer to form a MAC-e PDU.

As shown in Figure 5, the system provides a transport block length table. For each type of authorized resource (here, the number of slots), there are 128 transport block lengths to choose from. The UE selects the transport block length and tone. After the mode, only the transport block length index information (ie, E-TFCI) is sent to the Node B. When the Node B receives the E-PUCH channel from the UE, the Node B first obtains the transport format information E-TFCI, HARQ information from the E-UCCH channel. From the E-TFCI information, the Node B can know the transport block length and modulation mode of the MAC-e PDU in the E-PUCH. From the HARQ information, the Node B can know whether the current packet is a new packet or a retransmission packet, and obtains E. - Redundancy version information of the PUCH channel, HARQ process information, and the like. After obtaining the information, the Node B de-spreads, demodulates, and HARQ decodes the E-PUCH data, and feeds back ACK or NACK information to the UE according to the decoding result.

 As shown in FIG. 2, a data service flow diagram from the RLC layer to the physical layer on the UE side in the enhanced uplink service is provided. Among them, the following steps are included:

 Step S202, the RLC PDU of the logical channel is sent to the MAC-d layer, and directly mapped to a MAC-d PDU;

 Step S204, multiple MAC-d PDUs from the same logical channel are multiplexed into one MAC-es SDU (Service Data Unit), and header information (Transmission Sequence Number TSN, 3 bits) is added to form a MAC-es PDU; as well as

 In step S206, the MAC-es PDU is sent to the MAC-e layer, and the MAC-e layer connects the MAC-es PDUs that can be multiplexed into the same PDU, and adds header information (several DDI-N pairs).

 The DDI (Data Description Indicator) is used to indicate the logical channel, MAC-d flow, and MAC-d PDU length information to which the MAC-d PDU belongs. N is the number of MAC-d PDUs with the same DDI value.

 In step S206, the MAC-e entity first determines the highest priority logical channel X that is currently required to be transmitted and its corresponding MAC-d flow (a logical channel can only be mapped onto one MAC-d flow). Then, according to the multiplexed list information of the high-level configuration, other MAC-d flows that can be multiplexed with Y into the same MAC-e PDU are determined, and Y and the logical channels corresponding to the MAC-d flows are combined into one set B. Finally, the MAC-es PDUs are sequentially obtained from the set B in the order of the logical channel priorities, and are multiplexed into the MAC-e PDUs.

In the scheduling service, the UE needs to report some information to assist the scheduling of the Node B. It is called Scheduling Information (SI), which includes UE buffer information, power headroom, and path loss measurement information of the local cell and neighboring cells, and has 23 bits in total. When the UE has uplink data to be transmitted, the UE may trigger the transmission of the scheduling information. Currently, the triggering mechanism of the SI in the TD-SCDMA system includes:

 1. When the UE does not have authorization but there is data in the buffer to be transmitted, the SI will transmit on the E-RUCCH channel, which takes a long time due to the random access procedure.

 2. In the case of authorization, if the UE multiplexes the logical channel buffer data into the MAC-e PDU and the padding bit (Padding) is sufficient to transmit the scheduling information (ie, the padding bit is greater than or equal to 23 bits), the UE will The scheduling information is carried in the MAC-e PDU, and the mechanism is simply referred to as a "piggyback mechanism."

 3. When there is authorization, the upper layer configures a periodic timer T-WAIT for the UE. After sending the scheduling information, the T-WAIT timer is started. The new scheduling information is not sent before the timer expires. After the timer expires, The user terminal sends scheduling information; the mechanism is simply referred to as a "periodic triggering mechanism", and can also be understood as an "active triggering" mechanism.

 Considering that the uplink resources of the TDD system are limited, the UE cannot obtain the authorized resources from time to time. Therefore, the above-mentioned point 2 "piggyback mechanism" is more suitable for the TDD system; it is not difficult to find that the above points 2 and 3 are obviously contradictory. This is a flaw in the current standard.

 The SI will be sent separately on the E-PUCH channel in the following cases:

 (1) Because the authorized resources are relatively small, the transport block length allowed by the authorized resource cannot transmit the service data (the minimum MAC-d PDU length of the logical channel is greater than the transport block length allowed by the grant), so the UE is only authorized resources at this time. Send SI; and

 (2) The UE must send the SI on the current authorized resource due to the periodic reporting mechanism of the scheduling information or the triggering mechanism of the UE. However, because the obtained resources are limited, the MAC-e PDU is not only carrying the scheduling information. , can no longer carry other business data.

As shown in Figures 3(a) to 3(c), three types of scheduling information are transmitted. Fig. 3(a) shows the case where scheduling information is transmitted through the E-RUCCH, and Fig. 3(b) shows the case where the SI and the service data are transmitted in one MAC-e PDU packet, and the DDI in the packet header. It is used to indicate the end of the packet with scheduling information. In some cases, DDIQ is not needed. The NodeB can push out whether the end of the packet carries the scheduling information. The function of the padding bit is to ensure that the final MAC-e PDU length is the system design. Transmission A value in the block length table. Figure 3(c) shows the case when scheduling information is transmitted separately in the MAC-e PDU.

 Therefore, there are three cases of the MAC-e PDU shown in Figure 2:

 It is possible to simply transmit business data;

 Transmitting business data and scheduling information;

 The scheduling information is transmitted separately.

 When 3GPP develops the enhanced uplink technology of TD-CDMA system and TD-SCDMA system, it proposes a transmission format selection and data distribution flow, which is referred to as "transport format selection flow". For details, refer to Figure 4 (refer to 3GPP TS25.321 protocol) ).

 As shown in Figure 4, the following steps are included:

 Step S401: The UE needs to obtain a set of data sources, where the UE may be subdivided into: the UE first determines whether the current TTI is used for scheduling transmission or non-scheduled transmission; and the UE determines logic that meets the TTI transmission type (scheduled or unscheduled) with transmission requirements. Channel set A; determining the highest priority logical channel X from set A, the MAC-d flow corresponding to logical channel X is Y, and the power offset in the HARQ profile of MAC-d flow Y will be used in the following steps; Set B, which is a subset of set A, in which set B contains logical channels mapped to MAC-d flow Y, and logical channels of other MAC-d flows that can be multiplexed with MAC-d flow Y;

Step S402, the UE obtains the maximum transport block length allowed by the authorized resource, where the UE may be subdivided into: generating a transport block length set C1 and C2, where C1 corresponds to QPSK (Quadrature Phase Shift Keying) modulation mode, and C2 corresponds to 16QAM. (16 Orthogonal Amplitude Modulation) modulation mode, the length of each transport block in C1 and C2 needs to satisfy the transmission code rate on the current authorized resource should fall between the maximum and minimum code rates specified by the upper layer (the upper layer is configured for the UE E) -DCH type transmission bearer specifies the maximum and minimum bit rate that the UE can use); determines the subsets D1 and D2 of C1 and C2, respectively, so that the transmission power required for the transmission block length in D1, D2 is less than or equal to the authorization The calculation of power and transmit power is PE-PUCH = Pe-ba _S e + L + β _ε + K, where PE-PUCH is the transmit power of the E-PUCH channel, and P _e- base is the closed loop amount of power stored by the UE. Controlling the power control command word on the E-AGCH channel, L is the path loss value measured by the UE, and is the power offset obtained by the currently selected transport block length, code channel resource and modulation mode, and K is MAC-e PDU power offset (highest priority logical channel) In Power offset of the MAC-d flow, ie the power offset of the MAC-d flow Y); determining the maximum supported transport block length k from D1 and D2;

 Step S403: The UE allocates data in the logical channel priority order from the set B to form a MAC-e PDU, and selects a modulation mode, which may be specifically divided into: selecting the MAC of each logical channel from the set B in order of logical channel priority. -d PDUs, which form a MAC-es PDU, multiplexed into the MAC-e PDU, so that the resulting MAC-e PDU length is ≤ k; if the data is successfully allocated (ie, the authorized resources are sufficient), then according to the finally obtained MAC- e PDU length selection makes the transmission mode with the smallest transmission power, and sends the packet; if the selection is unsuccessful (that is, the authorized resources are insufficient), regain the set A, the new set A = the original set A - the set B, if the new set A is not an empty set The logical channel set and the transport block length are reselected starting from step 401. If the new set A is an empty set, the UE will only send scheduling information in the current MAC-e PDU.

 It is not difficult to see from the above transport block length selection process that the existing protocol has the following problems: The transport format selection process does not support the second scheduling information transmission as shown in FIG. 3, that is, the UE does not perform data allocation. Considering the triggering of scheduling information, it is only required in the design of the uplink.

From the above analysis of the triggering of the scheduling information in the existing protocol and the analysis of the data distribution process, it can be seen that the existing scheduling information triggering mechanism and data allocation have problems. In the case of scheduling information triggering, since the scheduling information directly affects the scheduling decision of the NodeB, its real-time performance should be guaranteed. Since the uplink resources are limited in the TDD system, if the UE does not have authorized resources, it can only pass the E-RUCCH. The channel sends scheduling information, which brings a large delay to the transmission of scheduling information, which is not conducive to the scheduling of the NodeB. Therefore, the "piggyback mechanism" described above is an ideal TDD system in the case of limited uplink resources. The scheduling information is triggered, but the current "periodic triggering mechanism" obviously limits the use of the "piggyback mechanism". From the data allocation of the scheduling information, under the appropriate scheduling information triggering mechanism, the MAC-e entity of the UE needs to cooperate with the scheduling information triggering function in the data distribution process, and reasonably arranges the scheduling information transmission. Since the triggering of the scheduling information and the data distribution of the MAC-e PDU have a natural relationship, the two processes can be considered in a unified manner, and a solution is urgently needed to solve the above problems. Summary of the invention

 The technical problem to be solved by the present invention is to provide a triggering method for enhancing uplink scheduling information transmission, determine a reasonable triggering mechanism, and allocate a data load according to whether it is required to actively trigger reporting of scheduling information, which can be applied to TD. - CDMA (Time Division Code Division Multiple Access) system and TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system.

 In order to solve the above technical problem, the present invention provides a triggering method for enhancing uplink scheduling information transmission, including:

 Configuring a scheduling information triggering timer T for the user terminal to trigger the scheduling information in the case that the user terminal has the authorized resource. After the timer T expires, the user terminal will actively trigger the sending of the scheduling information, and the enhanced media access is performed. Sending scheduling information in the control protocol data unit;

 When the user terminal does not actively trigger the scheduling information transmission, if the padding bits after the logical channel buffer data is multiplexed into the enhanced medium access control protocol data unit can accommodate the scheduling information, the user terminal will access the enhanced medium. Sending scheduling information in the control protocol data unit;

 The user terminal starts or restarts the timer T each time the user terminal sends scheduling information on the authorized resource.

 Further, the above triggering method may also have the following features:

 The authorization resource is a scheduling resource, and the scheduling information is sent in a scheduling type enhanced medium access control protocol data unit; or

 The authorized resource is a non-scheduled resource, and the scheduling information is sent in an unscheduled type of enhanced medium access control protocol data unit.

The present invention further provides a method for transmitting enhanced uplink scheduling information. When a user equipment has an authorized resource, the user terminal combines the selection result multiplexing data according to the enhanced transmission format to form an enhanced medium access control protocol data unit, if the enhanced medium is connected. The inbound control protocol data unit does not include scheduling information and its padding bits can accommodate scheduling information, and the user terminal multiplexes the latest scheduling information into the enhanced medium access control protocol data unit for transmission.

Another technical problem to be solved by the present invention is to provide an enhanced uplink data distribution method. And the device can reasonably allocate the data load according to whether the triggering of the scheduling information is actively triggered, which can be applied to the TD-CDMA (Time Division Code Division Multiple Access) system and the TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system.

 In order to solve the above technical problem, the present invention provides an enhanced uplink data distribution method, which is used to allocate a data load according to whether it is required to trigger the reporting of the scheduling information, and includes the following steps: Step S602: The user terminal determines whether an active trigger is required. Reporting the scheduling information; Step S604, if the scheduling information needs to be triggered, the user terminal reserves the bit of the scheduling information, and determines the available load length, so that the available load length is less than or equal to the authorized a difference between a maximum packet length supported by the resource and a bit of the scheduling information, and if the reporting of the scheduling information is not required to be triggered, the user terminal determines the available load length such that the available load length is less than or equal to The maximum packet length supported by the authorized resource;

 Step S606, performing data load distribution according to the available load length.

 Further, the above data distribution method may further have the following features: The step S606 includes the following processing:

 For each logical information in the second set, the service data is sequentially extracted in the order of priority of each logical channel, so that the length of the extracted service data and the header overhead is less than or equal to the available load length, and the available load length is Updating to the remaining length after subtracting the extracted service data, wherein the second set includes a logical channel mapped to a dedicated media access control flow corresponding to the highest priority logical channel in the first set, and A logical channel of another dedicated medium access control flow multiplex multiplexable with the dedicated medium access control flow, the first set being a logical channel set having a transmission requirement conforming to a TTI transmission type;

 The user terminal multiplexes the service data and the header overhead of the respective logical channels, or multiplexes the service data, the header overhead, and the scheduling information of the respective logical channels into the enhanced medium access control protocol data unit. Further, the above data distribution method may also have the following features:

In step S606, if the minimum service data length of any one of the logical channels in the second set is greater than the available load length, the user terminal removes the second set from the first set to obtain a new set, if The new set is not an empty set, and the user terminal will reselect the current TTI transmission. The logical channel set and the maximum packet length allowed by the authorized resource are re-loaded. If the new set is an empty set, the user terminal only sends scheduling information in the enhanced media access control protocol data unit of the current TTI.

 Further, the above data distribution method may also have the following features:

 In step S606, if the user terminal does not actively trigger the transmission of the scheduling information, and the padding bits in the enhanced medium access control protocol data unit after the logical channel buffer data allocation are sufficient to transmit the scheduling information, the user terminal will also be in the The padding bit portion of the enhanced medium access control protocol data unit transmits scheduling information.

 Further, the foregoing data distribution method may further have the following features: the user terminal is configured with a scheduling information triggering timer T, and each time the new scheduling information is sent on the authorized resource, the timer T is started or restarted. After the timer T expires, it is determined that the scheduling information needs to be actively sent.

 Further, the foregoing data distribution method may further have the following feature: the scheduling information is sent in an enhanced medium access control protocol data unit of a scheduling type or an enhanced medium access control protocol data unit of a non-scheduled type.

The data distribution apparatus for enhancing the uplink provided by the present invention includes:

 The scheduling information triggering unit is located on the user terminal, and is used to determine whether the scheduling of the scheduling information needs to be triggered.

 a determining unit, configured to: when the reporting of the scheduling information needs to be triggered, the user terminal reserves a bit of the scheduling information, and determines an available load length, so that the available load length is less than or equal to an authorized resource. The difference between the supported maximum packet length and the bit of the scheduling information, and in the case that the reporting of the scheduling information is not required to be triggered, the user terminal determines the available load length, so that the available load length is less than Or equal to the maximum packet length supported by the authorized resource;

 And an allocating unit, configured to perform data load distribution according to the available load length.

Further, the data distribution apparatus may further have the following features: the allocating unit includes: an updating unit, configured to sequentially extract service data in each logical channel priority order for each logical information in the second set, so that the extracted data is taken out Business data and header overhead length and less than or Equal to the available load length, and updating the available load length to the remaining length after subtracting the extracted service data, wherein the second set includes mapping to the highest priority logic in the first set a logical channel of a MAC-d flow corresponding to the channel, and a logical channel of another MAC-d flow multiplexed with the MAC-d flow, wherein the first set is a logical channel having a transmission requirement conforming to a TTI transmission type Collection;

 a multiplexing unit, configured to multiplex the service data of the respective logical channels and the header overhead, or multiplex the service data, the header overhead, and the scheduling information of the respective logical channels into an enhanced medium access control protocol data unit in.

 Further, the foregoing data distribution apparatus may further have the following features: the multiplexing unit is further configured to: when the multiplexed data constitutes an enhanced medium access control protocol data unit, for example, determining that the enhanced medium access control protocol data unit does not include The scheduling information and its padding bits can accommodate scheduling information, and the latest scheduling information is multiplexed into the enhanced medium access control protocol data unit.

 Further, the data distribution apparatus may further have the following features: the scheduling information triggering unit includes a scheduling information triggering timer T, and each time the scheduling information is sent on the authorized resource, the timer T is started or restarted. After the timer T expires, the scheduling information is actively triggered.

 Further, the foregoing data distribution apparatus may further have the following feature: the allocation unit multiplexes the scheduling information in a scheduling type enhanced medium access control protocol data unit or a non-scheduled type enhanced medium access control protocol data unit.

Therefore, the present invention solves the problem of how to better utilize the authorized resources and the maximum possible reporting of real-time scheduling information in the case of limited resources in the TDD system; and provides a data distribution method, so that the UE can meet the system requirements. The scheduling information reporting time preferentially considers the transmission of the scheduling information, and solves the defects of the original system. At the same time, since the UE is allowed to send scheduling information on the non-scheduled resource, it provides effective resource guarantee for the transmission of the scheduling information, and The information plays an important role in the scheduling of Node B. It can be seen that the present invention provides an effective solution for improving system scheduling efficiency and improving system resource utilization.

Other features and advantages of the invention will be set forth in the description which follows, and The object and other advantages of the present invention The points may be realized and obtained by the structures specified in the written description, the claims, and the drawings. Drawing fan

 The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawings: FIG. 1 is an architecture diagram of a UE side of an enhanced uplink access system in the related art;

 2 is a data flow diagram of a UE side of an enhanced uplink access system in the related art;

 Figure 3 (a), Figure 3 (b), and Figure 3 (c) are format diagrams of three types of scheduling information transmission data; Figure 4 is a flow chart of the related art "E-TFC selection procedure";

 Figure 5 is a diagram showing an example of a transport block length table provided by the related system.

 6 is a flowchart of a method for allocating data of an enhanced uplink according to the present invention; FIG. 7 is a schematic diagram of a data distribution process according to an embodiment of the present invention;

 8 is a flowchart of an "E-TFC selection flow" including the data distribution process of FIG. 7; FIG. 9 is a block diagram of an enhanced uplink data distribution apparatus according to the present invention;

 10 is a flowchart of a triggering method for enhancing uplink scheduling information transmission according to an aspect of the present invention;

 11 is a flow diagram of a triggering method for enhancing uplink scheduling information transmission in accordance with another aspect of the present invention. Preferred embodiment of the invention

 The preferred embodiments of the present invention are described with reference to the accompanying drawings, and the preferred embodiments of the present invention are intended to illustrate and explain the invention.

 6 is a flow chart of a method of data allocation for enhanced uplinks in accordance with the present invention. As shown in Figure 6, the method includes the following steps:

 Step S602: The user terminal determines whether it is required to actively trigger the reporting of the scheduling information.

Replacement page (Article 26) Step S604, if the user needs to actively trigger the scheduling information, the user terminal reserves the bit of the scheduling information, and determines the available load length, so that the available load length satisfies the first condition, and if the reporting of the scheduling information is not required to be triggered, the user terminal Determining the available load length so that the available load length satisfies the second condition;

 Step S606, data load distribution is performed according to the available load length.

 In step S602, according to the trigger mechanism of the scheduling information according to the present invention, after the timer T of the high-layer configuration expires, the user terminal will actively trigger the transmission of the scheduling information.

 The first condition is: the available load length is less than or equal to the difference between the maximum packet length supported by the authorized resource and the bit of the scheduling information. The second condition is: The available payload length is less than or equal to the maximum packet length supported by the authorized resource (ie, the maximum transport block length).

 Step S606 includes the following processes: for each logical information in the second set, the service data is sequentially extracted in the order of priority of each logical channel, so that the length of the extracted service data and the header overhead is less than or equal to the available load length, and is available. The load length is updated to the remaining length after subtracting the extracted service data; and the user terminal multiplexes the service data and header overhead and/or scheduling information of each logical channel into the enhanced medium access control protocol data unit.

 The second set includes a logical channel mapped to a MAC-d flow (dedicated medium access control flow) corresponding to the highest priority logical channel in the first set, and other MAC-d flows multiplexed with the MAC-d flow Logical channel, where the first set is a set of logical channels with transmission requirements that conform to the TTI transmission type.

 If the user terminal does not actively trigger the reporting of the scheduling information in step S602, the completion step is completed.

After S606, if the padding bit in the finally obtained enhanced medium access control protocol data unit is greater than equal to 23 bits, the user terminal will multiplex the latest scheduling information.

 In addition, the scheduling information may be sent in a scheduling type of enhanced medium access control protocol data unit or in a non-scheduled type of enhanced medium access control protocol data unit.

 The data distribution method of the scheduling information provided by the present invention is applied to the UE's transmission format selection and data distribution process (referred to as E-TFC selection). The following describes the TD-SCDMA system as an example.

7 is a schematic diagram of a data distribution process according to an embodiment of the present invention. As shown in FIG. 7, when a UE needs to trigger scheduling information, it satisfies (MAC-es/e header overhead + data load length + scheduling information). Length) ≤ k, and when the UE does not need to trigger the scheduling information, it satisfies (MAC-es/e header overhead + data load length) ≤ k.

 The specific data load distribution method specifically includes the following steps:

 1. Determine the available load length. For the case where the UE actively transmits the scheduling information, the available load length ≤ (k - scheduling information length); for the case where the active transmission scheduling information is not required, the available load length ≤ k;

 2. For each logical information in the set B, the following processing is sequentially performed in the order of logical channel priority: 2 (1), the service data is taken out, and the extracted (service data length + MAC-es, MAC-e header overhead) ≤ available Load length; and two (2), updating the "available load length" to subtract the number of used bits above;

 3. The service data and header overhead and/or scheduling information of each logical channel of the UE are multiplexed into the MAC-e PDU.

 In step 1, the UE triggers the scheduling information in the following cases: The timer of the upper configuration information of the upper layer configuration times out.

 In step 2 (1), for any logical channel, if the minimum service data length cannot meet the inequality requirement, the logical information will not provide data, and the MAC-e PDU data to be transmitted will not be present. Contains the business data of the logical channel. If all the logical channels in the set B cannot transmit data, the UE will regain the set A, and the new set A is the new set of the original set A to remove the set B. If the new set A is not an empty set, the UE will start to reselect the current TTI. The logical channel set transmitted and the maximum transport block length allowed by the grant resource. If A is an empty set, the UE will only send scheduling information.

 In step 3, the data portion of the finally obtained MAC-e PDU includes the following three cases: only service data, only scheduling information, existing service data, and scheduling information.

 Figure 8 is a flow chart of the "E-TFC Selection Flow" including the data distribution flow of Figure 7. As shown in Figure 8, the following four processes are mainly included:

S802, determining, by using an existing enhanced uplink transmission format selection algorithm, a set B, where the highest priority logical channel having a transmission requirement, and other logical channels multiplexed with the highest priority logical channel are included; S804. The UE determines a maximum transport block length k allowed by the authorized resource.

S806. The UE allocates a data load according to whether the scheduling information needs to be triggered actively; and

S808. The UE determines a transport block length, and determines a modulation mode that minimizes transmit power.

 In S802, the following steps are specifically included:

 The UE first determines whether the current TTI is used for scheduled transmission or non-scheduled transmission;

 The UE determines a logical channel set A having a transmission requirement that conforms to a TTI transmission type (scheduled or unscheduled);

 Determining the highest priority logical channel X from the set A, and the MAC-d flow corresponding to the logical channel X is Y;

 Determines set B, which is a subset of set A, in which set B contains logical channels mapped to MAC-d flow Y, and logical channels of other MAC-d flows that can be multiplexed with MAC-d flow Y.

 In S804, the following steps are specifically included:

 Generate transport block length sets C1 and C2, where C1 corresponds to QPSK modulation mode, C2 corresponds to 16QAM modulation mode, and each transport block length in C1 and C2 needs to satisfy: The transmission code rate on the current authorized resource should fall on the upper layer. The specified maximum and minimum bit rate;

是 E-PUCH信道的发射功率， Pe-base是 UE存储的功 率闭环量； L是 UE测量得到的路损值， 是当前所选择的传输块长度、 码 道资源和调制方式得到的功率偏移， 以及 K是 MAC-e PDU功率偏移 （最高 优先级逻辑信道所在的 MAC-d流的功率偏移，即 MAC-d流 Y的功率偏移 )； 以及 The subsets D1 and D2 of C1 and C2 are respectively determined such that the transmission power required for the length of the transport block in D1 and D2 is less than or equal to the authorized power, and the calculation of the transmit power is P _E _PUCH = Pe-base + L + β ε + Κ , among them,

Is the transmit power of the E-PUCH channel, Pe-base is the power closed-loop quantity stored by the UE; L is the path loss value measured by the UE, and is the power offset obtained by the currently selected transport block length, code channel resource, and modulation mode. And K is the MAC-e PDU power offset (the power offset of the MAC-d flow where the highest priority logical channel is located, ie the power offset of the MAC-d flow Y);

 The maximum supported transport block length is determined from D1 and D2.

 It should be understood that the specific steps of S806 are the same as those of FIG. 7, and are divided into two cases for data load distribution.

 In addition, in S808, the following steps are specifically included:

The transport block provided by the UE from the system according to the length of the finally obtained MAC-e PDU (denoted as S) The transport block set in the length table corresponding to the current time slot resource finds the closest transport block length value L greater than or equal to S, and the corresponding index number is recorded as E-TFCIL;

 If L is only present in D1, then the QPSK modulation mode is selected; if L is only present in D2, then the 16QAM modulation mode is selected, and if L is present in both D1 and D2, then the modulation mode with less power requirement is selected;

 If (L - S ) is greater than or equal to the scheduling information length, and the current MAC-e PDU does not include scheduling information, the UE multiplexes the latest scheduling information into the MAC-e PDU.

 This completes the transport format selection and data distribution process at the UE.

 Figure 9 is a block diagram of an enhanced uplink data distribution apparatus 900 in accordance with the present invention. As shown in FIG. 9, the apparatus includes: a scheduling information triggering unit 902, located on the user terminal, configured to determine whether the reporting of the scheduling information needs to be triggered; and a determining unit 904, configured to: when the reporting of the scheduling information needs to be triggered, The user terminal reserves the bit of the scheduling information, and determines the available load length, so that the available load length satisfies the first condition, and in the case that the reporting of the scheduling information is not required to be triggered, the user terminal determines the available load length to make the available load length Satisfying the second condition; and an allocating unit 906 for performing data load distribution according to the available load length.

 The first condition is: the available load length is less than or equal to the difference between the maximum packet length supported by the authorized resource and the bit of the scheduling information. The second condition is: The available payload length is less than or equal to the maximum packet length supported by the authorized resource.

 In addition, the allocating unit 906 includes: an updating unit, configured to sequentially extract the service data in each logical channel priority order for each logical information in the second set, so that the length of the extracted service data and the header overhead is less than or equal to the available Load length, and update the available load length to the remaining length after subtracting the extracted service data; and multiplexing unit for multiplexing service data and header overhead and/or scheduling information of each logical channel to the enhanced In the media access control protocol data unit, when the multiplexed data constitutes an enhanced medium access control protocol data unit, for example, it is determined that the enhanced medium access control protocol data unit does not include scheduling information and its padding bit can accommodate scheduling information. And multiplexing the latest scheduling information into the enhanced medium access control protocol data unit.

The second set includes a logical channel mapped to a MAC-d flow corresponding to the highest priority logical channel in the first set, and a logical channel of other MAC-d flows multiplexed with the MAC-d flow, The first set is a logical channel set with transmission requirements that conforms to the TTI transmission type. The scheduling information triggering unit 902, based on the scheduling information triggering mechanism of the present invention, includes a scheduling information triggering timer T, and each time the scheduling information is sent on the authorized resource, the timer T is started or restarted. After T times out, it actively triggers the sending of scheduling information. The scheduling information is sent in a scheduling type of enhanced medium access control protocol data unit or a non-scheduled type of enhanced medium access control protocol data unit.

 Figure 10 is a flow diagram of a triggering method for enhanced uplink scheduling information transmission in accordance with an aspect of the present invention.

 The triggering method for transmitting the enhanced uplink scheduling information includes the following processing:

 S1002: When the user terminal has an authorized resource, if the padding bit after the logical channel buffer data is multiplexed into the enhanced medium access control protocol data unit can accommodate the scheduling information, the user terminal is in the enhanced medium access control protocol. Sending scheduling information in the data unit;

 S1004: The upper layer configures a scheduling information triggering timer T for the user terminal, where the user terminal has an authorization condition; when the user terminal sends new scheduling information on the authorized resource, the timer is started or restarted each time the scheduling information is sent. T. After the timer T expires, the user terminal will actively trigger the transmission of scheduling information.

 It should be noted that there is no requirement that the order of time exists between S1002 and S1004. In the above S1004, the process of starting or restarting the timer by the user terminal includes: if the timer T has been started, the user terminal first resets the timer T that has been started, and then restarts the timer T; if the timer T is not When started, the user terminal will start the timer T.

 The above S1002 and S1004 cooperate with each other. When the user terminal passes the scheduling information through the S1002, the timer will be reset and restarted. The function of the timer 是 is to ensure that the scheduling information can be sent in a timely manner according to certain real-time requirements when the UE does not have more padding bits to send scheduling information for a long time.

 The authorized resource in S1002 may be a scheduling resource or a non-scheduled resource, where the enhanced medium access control protocol data unit may be of a scheduling type or a non-scheduled type.

In S1004, the UE may send scheduling information in a scheduling type enhanced medium access control protocol data unit or a non-scheduled type enhanced medium access control protocol data unit, depending on resource availability. For example, after the T timeout, the UE has one of scheduling resources or non-scheduled resources, then the UE uses the available resources to send scheduling information; when the UE has both scheduling resources and non-scheduled resources, the UE decides to use one of the resources. transmission.

 The foregoing S1002 and S1004 include a trigger mechanism for scheduling information in an authorized situation: if the enhanced medium access control protocol data unit has enough padding bits, the user terminal sends the scheduling information, that is, the idle scheduling resource carries the scheduling information;

 If no scheduling information is sent within the time configured by the upper layer, the user terminal will actively trigger the transmission of the scheduling information. The timer Τ is used to avoid reporting of scheduling information for a long time, ensuring that the scheduling information meets certain real-time requirements.

 11 is a flow diagram of a triggering method for enhancing uplink scheduling information transmission in accordance with another aspect of the present invention.

 The method includes the following processing: S1102: A high layer configures a scheduling information triggering timer for the user terminal, where the scheduling information of the user terminal is authorized to be triggered; S1104, if the logical channel buffer data is multiplexed to the enhanced The padding bits after the media access control protocol data unit can accommodate scheduling information, and the user terminal will send scheduling information in the enhanced medium access control protocol data unit; and S1106, the user terminal is in the authorized resource. The timer is started or restarted when the new scheduling information is sent. After the timer expires, the user terminal will actively trigger the sending of the scheduling information.

 In the above triggering method, the process of restarting the timer by the user terminal includes: if the timer Τ has been started, the user terminal first resets the timer 已经 that has been started, and then restarts the timing. The user terminal will start the timer τ if the timer Τ is not activated.

Therefore, with the present invention, the triggering mechanism of the scheduling information is more suitable for the TDD system of the resource upper limit, and the UE can preferentially consider the transmission of the scheduling information on the scheduling information required by the system, thereby solving the defects of the original system, and simultaneously Since the UE is allowed to send scheduling information on the non-scheduled resource, it provides effective resource guarantee for the transmission of the scheduling information. In addition, since the scheduling information plays an important reference role for the scheduling of the Node B, the system scheduling efficiency and system are improved. Utilization of resources. The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

 The invention is suitable for the resource capping TDD system, provides effective resource guarantee for dispatching information transmission, and improves system scheduling efficiency and system resource utilization.

Claims

Claim A triggering method for enhancing uplink scheduling information transmission, comprising: configuring a scheduling information triggering timer T in a user terminal, where the scheduling information is triggered by the user terminal having an authorized resource, After the timer T expires, the user terminal will actively trigger the sending of the scheduling information, and send the scheduling information in the enhanced medium access control protocol data unit.  When the user terminal does not actively trigger the scheduling information transmission, if the padding bits after the logical channel buffer data is multiplexed into the enhanced medium access control protocol data unit can accommodate the scheduling information, the user terminal will access the enhanced medium. Sending scheduling information in the control protocol data unit;  The user terminal starts or restarts the timer τ each time the user terminal transmits scheduling information on the authorized resource.  2. The triggering method according to claim 1, wherein:  The authorization resource is a scheduling resource, and the scheduling information is sent in a scheduling type enhanced medium access control protocol data unit; or  The authorized resource is a non-scheduled resource, and the scheduling information is sent in an unscheduled type of enhanced medium access control protocol data unit. 3. A method for transmitting enhanced uplink scheduling information, characterized in that, when there is an authorized resource, the user terminal combines the selected result multiplexing data according to the enhanced transmission format to form an enhanced medium access control protocol data unit, if the enhanced medium The access control protocol data unit does not include scheduling information and its padding bits can accommodate scheduling information, and the user terminal multiplexes the latest scheduling information into the enhanced medium access control protocol data unit for transmission. 4. An enhanced uplink data distribution method, configured to allocate a data load according to whether a triggering of the scheduling information is required to be triggered, and the method comprises the following steps: Step S602, the user terminal determines whether it is necessary to actively trigger the reporting of the scheduling information. Step S604, if the scheduling information needs to be triggered, the user terminal reserves the bit of the scheduling information, and determines the available load length. Making the available load length less than or equal to a difference between a maximum packet length supported by the authorized resource and a bit of the scheduling information, and if not The user terminal is required to trigger the reporting of the scheduling information, and the user terminal determines the available payload length, so that the available payload length is less than or equal to a maximum packet length supported by the authorized resource;  Step S606, performing data load distribution according to the available load length. The data distribution method according to claim 4, wherein the step S606 includes the following processing:  For each logical information in the second set, the service data is sequentially extracted in the order of priority of each logical channel, so that the length of the extracted service data and the header overhead is less than or equal to the available load length, and the available load length is Updating to the remaining length after subtracting the extracted service data, wherein the second set includes a logical channel mapped to a dedicated media access control flow corresponding to the highest priority logical channel in the first set, and A logical channel of another dedicated medium access control flow multiplex multiplexable with the dedicated medium access control flow, the first set being a logical channel set having a transmission requirement conforming to a TTI transmission type;  The user terminal multiplexes the service data and the header overhead of the respective logical channels, or multiplexes the service data, the header overhead, and the scheduling information of the respective logical channels into the enhanced medium access control protocol data unit. 6. The data distribution method according to claim 5, wherein:  In step S606, if the minimum service data length of any one of the logical channels in the second set is greater than the available load length, the user terminal removes the second set from the first set to obtain a new set, if The new set is not an empty set, and the user terminal reselects the logical channel set of the current TTI transmission and the maximum packet length allowed by the authorized resource, and performs load distribution again. If the new set is an empty set, the user terminal is in the current TTI. Only the scheduling information is sent in the enhanced media access control protocol data unit. 7. The data distribution method according to claim 5, wherein: In step S606, if the user terminal does not actively trigger the transmission of the scheduling information, and the padding bits in the enhanced medium access control protocol data unit after the logical channel buffer data allocation are sufficient to transmit the scheduling information, the user terminal will also be in the The padding bit portion of the enhanced medium access control protocol data unit transmits scheduling information. The data distribution method according to claim 4, 5, 6 or 7, wherein the user terminal is configured with a scheduling information triggering timer T, each time a new scheduling information is sent on the authorized resource, The timer T is started or restarted. After the timer T expires, it is determined that the scheduling information needs to be actively sent. The data distribution method according to claim 5, 6 or 7, wherein the scheduling information is in a scheduling type enhanced medium access control protocol data unit or a non-scheduled type enhanced medium access control protocol data unit. Sent in. A data distribution device for enhancing an uplink, comprising: a scheduling information triggering unit, located on a user terminal, configured to determine whether an initiative to trigger reporting of the scheduling information is required;  a determining unit, configured to: when the reporting of the scheduling information needs to be triggered, the user terminal reserves a bit of the scheduling information, and determines an available load length, so that the available load length is less than or equal to an authorized resource. The difference between the supported maximum packet length and the bit of the scheduling information, and in the case that the reporting of the scheduling information is not required to be triggered, the user terminal determines the available load length, so that the available load length is less than Or equal to the maximum packet length supported by the authorized resource;  And an allocating unit, configured to perform data load distribution according to the available load length. 11. The data distribution apparatus according to claim 10, wherein the allocation unit comprises:  And an update unit, configured to sequentially extract the service data in each logical channel priority order for each logical information in the second set, so that the length of the extracted service data and the header overhead is less than or equal to the available load length, and The available load length is updated to the remaining length after subtracting the extracted service data, wherein the second set includes logic mapped to the MAC-d flow corresponding to the highest priority logical channel in the first set a channel, and a logical channel of another MAC-d flow multiplexed with the MAC-d flow, wherein the first set is a logical channel set having a transmission requirement conforming to a TTI transmission type; a multiplexing unit, configured to use the service data of the respective logical channels and the header overhead, or The service data, header overhead, and the scheduling information of the respective logical channels are multiplexed into an enhanced medium access control protocol data unit. 12. A data distribution device according to claim 11 wherein:  The multiplexing unit is further configured to: when the multiplexed data constitutes an enhanced medium access control protocol data unit, if it is determined that the enhanced medium access control protocol data unit does not include scheduling information, and the padding bit can accommodate the scheduling information, The latest scheduling information is multiplexed into the enhanced medium access control protocol data unit. The data distribution apparatus according to claim 10, 11 or 12, wherein: the scheduling information triggering unit includes a scheduling information triggering timer T, which is started each time the scheduling information is sent on the authorized resource. The timer T is restarted, and the scheduling information is actively triggered after the timer T expires. The data distribution apparatus according to claim 10, 11 or 12, wherein the allocating unit multiplexes scheduling information in a scheduling type enhanced medium access control protocol data unit or a non-scheduled type enhanced medium connection Transmitted into the control protocol data unit.