WO2021147103A1 - 一种译码方法、装置及系统 - Google Patents

一种译码方法、装置及系统 Download PDF

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Publication number
WO2021147103A1
WO2021147103A1 PCT/CN2020/074028 CN2020074028W WO2021147103A1 WO 2021147103 A1 WO2021147103 A1 WO 2021147103A1 CN 2020074028 W CN2020074028 W CN 2020074028W WO 2021147103 A1 WO2021147103 A1 WO 2021147103A1
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data
storage unit
decoding
retransmission
information corresponding
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PCT/CN2020/074028
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English (en)
French (fr)
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花梦
梁继业
孙宇佳
焦淑蓉
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华为技术有限公司
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Priority to CN202080001664.3A priority Critical patent/CN113439402B/zh
Priority to PCT/CN2020/074028 priority patent/WO2021147103A1/zh
Publication of WO2021147103A1 publication Critical patent/WO2021147103A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a decoding method, device and system.
  • the 5G mobile communication system is called new radio (NR).
  • the International Telecommunication Union (ITU) defines three types of application scenarios for 5G and future mobile communication systems: enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications communications, URLLC) and massive machine type communications (mMTC).
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable and low-latency communications
  • mMTC massive machine type communications
  • the base station Because the URLLC service is bursty, in order to improve the utilization of system resources, the base station usually does not reserve resources for the downlink data transmission of the URLLC service.
  • URLLC service data arrives at the base station, if there is no free time-frequency resource at this time, in order to meet the ultra-short delay requirement of the URLLC service, the base station cannot wait for the completion of this scheduled eMBB service data transmission before scheduling the URLLC service data. .
  • the base station can use a preemption method to allocate time-frequency resources for URLLC service data. As shown in Figure 1, the preempted time-frequency resources here are part or all of the time-frequency resources allocated by the base station for transmitting eMBB service data.
  • the base station transmits URLLC on the preempted time-frequency resources. Service data does not transmit eMBB service data.
  • the present application provides a decoding method, device, and system for reducing the retransmission probability of eMBB service data when the time-frequency resource for transmitting eMBB service data is preempted by burst URLLC service data.
  • this application provides a decoding method, which can be executed by an electronic device, which can be a terminal device, or a processor in the terminal, or a chip system in the terminal device.
  • the method includes: receiving the k-th retransmitted data from a network device, where k is a positive integer greater than or equal to 2; receiving instruction information from the network device; and determining the received k-th data from the network device according to the instruction information.
  • the data of the 1st retransmission participates in the merging, and the decoding is performed based on the first merging result, the decoding information corresponding to the k-1th retransmitted data, and the kth retransmitted data; among them, the received data from the network device
  • the decoding information corresponding to the data participating in the merging in the previous multiple transmissions can be used for decoding, thereby improving the PDSCH receiving performance and reducing the retransmission probability.
  • the decoding corresponding to the data of the k-1th retransmission is based on the first merging result.
  • the information and the k-th retransmitted data can be decoded by including but not limited to the following methods: determine according to the instruction information that the k-1th retransmitted data participates in the merge, and based on the second merge result and the k-th retransmitted data The data is decoded, where the second merging result is the merging result of merging the first merging result and the decoding information corresponding to the k-1th retransmitted data.
  • the second merging result may be stored before the data of the k-1th retransmission is determined to participate in the merging according to the indication information, or the data of the k-1th retransmission is determined to participate in the merging according to the indication information. After that, the decoding information corresponding to the k-1th retransmitted data is combined based on the first combined result to obtain the second combined result. This application does not limit this.
  • the indication information includes code block group erasure information CBGFI; according to the indication information, it is determined that the received data of the k-1th retransmission from the network device participates in the merging, including but not limited to the following methods :
  • CBGFI code block group erasure information
  • the data of the k-1th retransmission is determined to participate in the merging; among them, the data of the k-1th retransmission is the One or more coded blocks CB retransmitted k-1 times, or one or more coded block groups CBG.
  • the indication information includes the preemption indication PI; according to the indication information, it is determined that the received data of the k-1th retransmission from the network device participates in the merging, including but not limited to the following methods: When indicating that the time-frequency resource used to transmit the data of the k-1th retransmission is not preempted, it is determined that the data of the k-1th retransmission participates in the merging; wherein, the data of the k-1th retransmission is the data of the k-1th retransmission. Data retransmitted k-1 times on a time-frequency resource indicated by PI.
  • it further includes: when decoding is performed based on the first combination result, the decoding information corresponding to the k-1th retransmitted data, and the kth retransmitted data, and the decoding fails, storing The third combination result and the decoding information corresponding to the k-th retransmission data, and the third combination result is a combination result of the first combination result and the decoding information corresponding to the k-1th retransmission data.
  • the decoding information corresponding to the data previously participating in the merging is not lost, which helps to reduce the probability of retransmission.
  • the decoding information corresponding to the third merging result and the k-th retransmitted data is stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is for the initial
  • the data is transmitted to the storage unit allocated by the data scheduling process of the kth retransmission, and the second storage unit is the storage unit allocated for any unscheduled process.
  • it further includes: when decoding is performed based on the second combined result and the k-th retransmitted data and the decoding fails, storing the second combined result and the fourth combined result, and the fourth combined result is The second combined result is combined with the decoding information corresponding to the k-th retransmitted data.
  • the decoding information corresponding to the data previously participating in the merging is not lost, which helps to reduce the probability of retransmission.
  • the second combined result and the fourth combined result are stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is for the first data transmission to the kth retransmission
  • the second storage unit is a storage unit allocated for any unscheduled process.
  • it further includes: determining according to the instruction information that the received data of the k-1th retransmission from the network device does not participate in the merging, and performing translation based on the first merging result and the k-th retransmitted data code.
  • the decoding information corresponding to the data participating in the merging in the previous multiple transmissions can be used for decoding, thereby improving the PDSCH receiving performance and reducing the retransmission probability .
  • the indication information includes CBGFI; according to the indication information, it is determined that the received data of the k-1th retransmission from the network device does not participate in the merging, and the following methods can be used including but not limited to: When it indicates that the reception of the data retransmitted for the k-1th time may be affected, it is determined that the data for the k-1th retransmission does not participate in the merging; among them, the data for the k-1th retransmission is the k-1th retransmission.
  • the indication information includes PI; according to the indication information, it is determined that the received data of the k-1th retransmission from the network device does not participate in the merging.
  • Methods including but not limited to the following can be used: Indicate that when the time-frequency resource used to transmit the data of the k-1th retransmission is preempted, it is determined that the data of the k-1th retransmission does not participate in the combination; wherein, the data of the k-1th retransmission is the kth -1 data retransmitted on a time-frequency resource indicated by PI.
  • it further includes: when decoding is performed based on the first combined result and the k-th retransmitted data and the decoding fails, storing the first combined result and the fifth combined result, and the fifth combined result is The first combined result is combined with the decoding information corresponding to the k-th retransmitted data.
  • the decoding information corresponding to the data previously participating in the merging is not lost, which helps to reduce the probability of retransmission.
  • the first combined result and the fifth combined result are stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is for the first data transmission to the kth retransmission
  • the second storage unit is a storage unit allocated for any unscheduled process.
  • it further includes: when decoding is performed based on the first combined result and the k-th retransmitted data and the decoding fails, storing the translation corresponding to the first combined result and the k-th retransmitted data Code information.
  • the decoding information corresponding to the data previously participating in the merging is not lost, which helps to reduce the probability of retransmission.
  • the first combination result and the decoding information corresponding to the k-th retransmission data are stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is for the initial
  • the data is transmitted to the storage unit allocated by the data scheduling process of the kth retransmission, and the second storage unit is the storage unit allocated for any unscheduled process.
  • it also includes: receiving the initial transmission data from the network device; when the decoding of the initial transmission data fails, storing the decoding information corresponding to the initial transmission data; receiving the first retransmission from the network device
  • the decoding is performed based on the decoding information corresponding to the first transmission data and the first retransmission data and the decoding fails, the decoding information corresponding to the first transmission data is stored, and the decoding information corresponding to the first transmission data is stored.
  • the decoding information corresponding to the initial transmission data can be realized without losing, which helps to reduce the probability of retransmission.
  • the decoding information corresponding to the first transmission data, and the decoding information corresponding to the first transmission data and the decoding information corresponding to the first retransmission data are combined, and the combined result is stored in the first storage unit ,
  • the first storage unit is the storage unit allocated for the process of data scheduling from the first data transmission to the kth retransmission
  • the second storage unit is allocated for any unscheduled process Storage unit.
  • it also includes: receiving the initial transmission data from the network device; when the decoding of the initial transmission data fails, storing the decoding information corresponding to the initial transmission data; receiving the first retransmission from the network device When the first transmission data participates in merging, and the decoding information corresponding to the first transmission data and the first retransmission data are decoded and the decoding fails, the decoding information corresponding to the first transmission data is stored, and the first transmission data is decoded. Decoding information corresponding to the data retransmitted once.
  • the decoding information corresponding to the initial transmission data can be realized without losing, which helps to reduce the probability of retransmission.
  • the decoding information corresponding to the first transmission data and the decoding information corresponding to the first retransmission data are stored in the first storage unit, or the first storage unit and the second storage unit.
  • the storage unit is a storage unit allocated for the process of data scheduling from the first data transmission to the kth retransmission
  • the second storage unit is a storage unit allocated for any unscheduled process.
  • first storage unit and the second storage unit are storage units respectively allocated for different processes.
  • first storage unit and the second storage unit are caches.
  • the first storage unit and the second storage unit may be a storage unit located in the electronic device, or a storage unit coupled with the electronic device. Specifically, the first storage unit and the second storage unit may occupy part of the storage space in the non-volatile memory, or may also occupy part of the storage space in the volatile memory.
  • the non-volatile memory may include, but is not limited to, a hard disk or a solid state disk
  • the volatile memory may include, but is not limited to, a random access memory or a static random access memory.
  • the indication information is carried by the media access control control unit MAC-CE or radio resource control RRC signaling.
  • the indication information can be carried through MAC-CE or RRC.
  • this application provides a communication device, which may be a terminal device or a chip in the terminal device.
  • the device may include a processing unit, a sending unit, and a receiving unit.
  • the sending unit and the receiving unit here may also be a transceiving unit.
  • the processing unit may be a processor, the sending unit and the receiving unit may be transceivers;
  • the terminal device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions ,
  • the processing unit executes the instructions stored in the storage unit, so that the terminal device executes the first aspect or any one of the possible design methods in the first aspect.
  • the processing unit may be a processor, and the sending unit and receiving unit may be input/output interfaces, pins or circuits, etc.; the processing unit executes the instructions stored in the storage unit to
  • the chip is made to execute the method in the first aspect or any one of the possible designs in the first aspect.
  • the storage unit is used to store instructions.
  • the storage unit can be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory, Random access memory, etc.).
  • the present application also provides a readable storage medium that stores instructions, and when the instructions are executed, the above-mentioned method of the first aspect is realized.
  • the present application also provides a computer program code, when the computer program code runs on a computer, the computer executes the method of the first aspect.
  • this application also provides a computer program product containing a program, which when running on a computer, causes the computer to execute the method of the first aspect.
  • the present application also provides a communication device, including a processor and a memory; the memory is used to store computer-executable instructions; the processor is used to execute the computer-executable instructions stored in the memory, so that the communication device executes the method of the above-mentioned first aspect .
  • the present application also provides a communication device including a processor and an interface circuit; the interface circuit is used to receive and transmit code instructions to the processor; and the processor executes the code instructions to execute the method of the first aspect.
  • the present application also provides a communication system.
  • the communication system includes a network device and a terminal device, and the terminal device executes the method of the first aspect described above.
  • Figure 1 is a schematic diagram of a base station in this application using preemption to allocate time-frequency resources for URLLC service data
  • FIG. 2 is a schematic diagram of the architecture of the mobile communication system in this application.
  • FIG. 3 is one of the schematic diagrams of the frequency domain range and the time domain range indicated by PI in this application;
  • FIG. 4 is the second schematic diagram of the frequency domain range and the time domain range indicated by PI in this application;
  • FIG. 5 is a schematic diagram of the time-frequency resource division mode corresponding to PI in the application as ⁇ 7, 2 ⁇ ;
  • Figure 6 is a schematic diagram of transport block coding in NR in this application.
  • Figure 7 is a schematic diagram of channel coding in this application.
  • Figure 8 is a schematic diagram of a redundant version in this application.
  • Fig. 9 is an overview flowchart of a decoding method in this application.
  • Fig. 10 is a decoding flow chart for a scenario with only CBGFI in this application.
  • FIG. 11 is a decoding flowchart for a PI-only scenario in this application.
  • FIG. 12 is a schematic diagram of a redundant version corresponding to FIG. 11 in this application.
  • Figure 13 is one of the schematic diagrams of the device structure in this application.
  • Figure 14 is the second schematic diagram of the device structure in this application.
  • Fig. 2 is a schematic structural diagram of a mobile communication system applied in an embodiment of the present application.
  • the mobile communication system includes a core network device 210, a network device 220, and at least one terminal device (230, 240).
  • the terminal device is connected to the network device in a wireless manner, and the network device is connected to the core network device in a wireless or wired manner.
  • the core network equipment and the network equipment can be separate and different physical equipment, or they can integrate the functions of the core network equipment and the logical functions of the network equipment on the same physical device, or it can be a physical device that integrates part of the core network.
  • the terminal device can be a fixed location, or it can be movable.
  • Fig. 2 is only a schematic diagram.
  • the communication system may also include other network equipment.
  • the communication system may also include wireless relay equipment and wireless backhaul equipment, which are not shown in Fig. 2.
  • the embodiments of the present application do not limit the number of core network equipment, network equipment, and terminal equipment included in the mobile communication system.
  • a network device is an access device that a terminal device accesses to the mobile communication system by wireless means. It can be a base station (NodeB), an evolved base station (eNodeB), a base station in the NR mobile communication system, and a base station in the future mobile communication system. Or the access node in the WiFi system, etc.
  • NodeB base station
  • eNodeB evolved base station
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.
  • the terminal device may also be called a terminal (terminal), user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), and so on.
  • Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (Augmented Reality, AR) terminal devices, industrial control (industrial control) Wireless terminals in ), wireless terminals in unmanned driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid (smart grid), wireless terminals in transportation safety (transportation safety) Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • VR virtual reality
  • AR Augmented Reality
  • Wireless terminals in wireless terminals in unmanned driving (self-driving)
  • wireless terminals in remote medical surgery wireless terminals in smart grid (smart grid), wireless terminals in transportation safety (transportation safety) Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • Network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through licensed spectrum (licensed spectrum), communication can also be carried out through unlicensed spectrum (unlicensed spectrum), or through licensed spectrum and unlicensed spectrum at the same time Communication.
  • Network equipment and terminal equipment and between terminal equipment and terminal equipment can communicate through the frequency spectrum below 6G, or through the frequency spectrum above 6G, and can also communicate using the frequency spectrum below 6G and the frequency spectrum above 6G at the same time.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • Typical eMBB services include: ultra-high-definition video, augmented reality (AR), virtual reality (VR), etc.
  • the main characteristics of these services are large transmission data volume and high transmission rate.
  • Typical URLLC services include: wireless control in industrial manufacturing or production processes, motion control of unmanned vehicles and unmanned aircraft, and tactile interaction applications such as remote repairs and remote surgery.
  • the main feature of these services is that they require ultra-high reliability. It has high performance, low latency, small amount of transmitted data and burstiness.
  • Typical mMTC services include: smart grid power distribution automation, smart cities, etc.
  • the main features are the huge number of networked devices, the small amount of transmitted data, and the data insensitive to transmission delay.
  • These mMTC terminals need to meet low cost and very long standby time. The need for time.
  • the resources here include, but are not limited to: time domain resources, frequency domain resources, codeword resources, air interface resources, beam resources, and so on.
  • time domain resources usually include, but are not limited to: time domain resources, frequency domain resources, codeword resources, air interface resources, beam resources, and so on.
  • codeword resources usually include, but are not limited to: time domain resources, frequency domain resources, codeword resources, air interface resources, beam resources, and so on.
  • allocation of system resources is done by network equipment. The following takes network equipment as an example for description.
  • a longer time scheduling unit is usually used for data transmission to improve transmission efficiency.
  • a time slot with a 15kHz subcarrier interval corresponds to 14 time domain symbols.
  • the corresponding time length is 1ms.
  • URLLC service data usually uses a shorter time scheduling unit to meet the needs of ultra-short delay. For example, using 2 time domain symbols with 15kHz subcarrier spacing, the corresponding time length is 0.14ms, or using 60kHz subcarrier spacing
  • One time slot corresponds to 14 time domain symbols, and the corresponding time length is 0.25 ms.
  • the data generation of the URLLC service is bursty and random. It may not generate data packets for a long period of time, or it may generate multiple data packets in a short period of time.
  • the characteristics of the data packet of the URLLC service will affect the resource allocation method of the communication system. If the network device allocates resources for the URLLC service by reserving resources, these resources are wasted when there is no URLLC service.
  • the short delay characteristic of the URLLC service requires that the data packet be transmitted in a very short time, so the network equipment needs to reserve a large enough bandwidth for the URLLC service, which leads to a serious decrease in resource utilization. Therefore, in order to improve the utilization of system resources, network equipment usually does not reserve resources for the downlink data transmission of the URLLC service.
  • URLLC service data arrives at the base station, if there is no free time-frequency resource at this time, in order to meet the ultra-short delay requirement of the URLLC service, the network equipment can use the preemption method to allocate resources for the URLLC service data.
  • the base station when URLLC service data arrives at the base station, if there is no free time-frequency resource at this time, in order to meet the ultra-short delay requirement of the URLLC service, the base station cannot wait for the eMBB service data scheduled this time to be transmitted before sending the URLLC service. Data is scheduled.
  • the base station can use a preemption method to allocate time-frequency resources for URLLC service data. As shown in Figure 1, the preempted time-frequency resources here are part or all of the time-frequency resources allocated by the base station for transmitting eMBB service data.
  • the base station transmits URLLC on the preempted time-frequency resources. Service data does not transmit eMBB service data.
  • the UE may take URLLC
  • the service data is demodulated and decoded as its own data, which causes the decoding to fail. What’s more serious is that for a transport block that fails to decode, the UE will store the soft value of the transport block, combine the soft value with the retransmitted transport block, and decode based on the combined result, resulting in retransmission.
  • the transmission block has failed to decode. Therefore, in the above scenario, the probability of retransmission of eMBB service data may increase.
  • the preemption indication is carried in the group public downlink control information (downlink control information, DCI), and a 14-bit (bit) bitmap is used to indicate the preemption of resources.
  • the transmission period of the DCI carrying the PI is configured by high-level parameters, with a slot as a unit. Assuming that the period is T INT time slots, the time-frequency range indicated by each 14-bit PI is:
  • Time domain recorded as N INT symbols.
  • the frequency domain indicated by PI is the entire BWP.
  • the time domain N INT is 28 symbols, and in Fig. 4, the time domain N INT is 18 symbols.
  • the time-frequency resource is divided into 14 parts in time, and no division in frequency.
  • each bit corresponds to a time-frequency resource, which can also be called a time-frequency sub-resource.
  • a bit of 0 indicates that the user's transmission is available on the time-frequency resource, that is, the time-frequency resource is not preempted;
  • a bit of 1 indicates that there is no transmission of the user on the time-frequency resource, that is, the time-frequency resource is preempted.
  • the time-frequency resource is divided into 7 parts in time and 2 parts in frequency. 14bit PI, every 2 bits are divided into one group, a total of seven groups. A bit value of 0 indicates that the user's transmission is available on the time-frequency resource; a bit value of 1 indicates that the user's transmission is not available on the time-frequency resource. As shown in Fig. 5, an example is given where the time-frequency resource division mode corresponding to a PI is ⁇ 7, 2 ⁇ .
  • a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) includes 1 to 2 transport blocks (Transport Block, TB), and each TB corresponds to a cyclic redundancy check (CRC).
  • Each TB may include one or more coded blocks (CB), and each CB corresponds to a CRC.
  • the CBs contained in each TB can be divided into several coded block groups (CBG), and each CBG includes one or more CBs.
  • a CBG can correspond to an acknowledgement (ACK) or negative acknowledgement (NACK) indication.
  • the UE may feed back ACK or NACK to the gNB in a unit of CBG, and correspondingly, the gNB may perform data retransmission in a unit of CBG.
  • the UE determines the number of CBGs in a transport block according to the following formula:
  • N is the maximum number of CBGs in a TB configured by high-level parameters
  • C is the number of CBs in a TB.
  • each CBG contains If M 1 > 0, the first M 1 CBGs include K 1 CBs, and the last MM 1 CBGs include K 2 CBs.
  • CBG transmission information CBGTI
  • CBGFI CBG transmission information
  • the UE can assume that all CBGs in the TB exist.
  • the network device performs PDSCH retransmission, the UE can assume:
  • the CBGTI field indicates the CBG that exists in this retransmission. Take a bit used to indicate CBG in the CBGTI field as an example. If the bit indicates 0, it means that the CBG corresponding to the bit does not have transmission. If the bit indicates 1, Indicates that the CBG corresponding to the bit is being transmitted.
  • the CBGFI field indicates 0, which means that the reception of the last transmission of these CBGs for this transmission may be affected, and the CBGFI field indicates 1, which means that these CBGs for this transmission can be compared with the previous transmission.
  • the corresponding CBG of CBG can be merged, that is, log-likelihood ratio (LLR) merging can be performed. It does not rule out the modification of the following protocol, for example, a CBG corresponds to a CBGFI indication.
  • the CBG in the retransmission contains the same CB as in the initial transmission.
  • the following takes the encoding process of transmission block 1 and transmission block 2 as an example for description. Specifically, first, the information bit sequence composed of TB and cyclic redundancy check (cyclic redundancy check, CRC) is divided into code blocks to obtain several information bit sequences composed of code blocks and CRC, as shown in Fig. 6 The information bit sequence formed by the transmission block 1 and the CRC is divided into several information bit sequences formed by the code block and the CRC. Further, each information bit sequence composed of a code block and a CRC is separately channel coded, and the code rate here is also referred to as the mother code rate. In NR, the mother code rate is 1/3 or 1/5.
  • the code rate of the mother code is 1/3
  • the sum of the number of bits of the code block plus the number of bits of the CRC is N bits
  • the channel-coded information bit sequence is subjected to rate matching.
  • the method of rate matching may be repetition or truncation.
  • the purpose of rate matching is to adapt the data to be sent to the air interface resources.
  • the time-frequency resources occupied by different transmissions may be different, different methods can be used to select the bits to be transmitted from the information bit sequence after channel coding according to the time-frequency resources occupied by different transmissions. Get different redundant versions.
  • redundancy versions may be transmitted in different transmissions, and the number of bits in each redundancy version may also be different.
  • the bits after the rate matching are interleaved, and the code block concatenation is performed on the interleaved bits to obtain an encoded transmission block.
  • the rate matching method at the initial transmission is truncation, as shown in Figure 8 for redundancy version 0 in the truncation case, the number of bits of the redundancy version 0 is less than 3N bits, then the UE uses Less than 3N LLRs are decoded, where each bit corresponds to one LLR. If the decoding is wrong, less than 3N LLRs are stored in the corresponding position; if the rate matching method is repeated at the initial transmission, as shown in Figure 8.
  • redundancy version 0 in the case of repetition, the number of bits of the redundancy version 0 is greater than 3N bits, then the UE will merge the repeated LLRs before decoding (the LLRs corresponding to the dashed lines in the two segments in Figure 8 are merged), Use 3N LLRs for decoding. If the decoding is wrong, store 3N LLRs in the corresponding position. Further, if the rate matching method during retransmission is truncation, as shown in Figure 8 for redundancy version 1 in the truncation case, the UE will merge less than 3N LLRs with the stored LLRs during decoding. , And then decode. If the rate matching method during retransmission is repetition, the UE combines the repeated LLRs of this transmission, and then merges them with the stored LLRs, and then decodes them.
  • the decoding information corresponding to the data in this application may be a soft value (for example, LLR) or a hard value (hard value) corresponding to the data.
  • LLR soft value
  • hard value hard value
  • the LLR corresponding to 1 bit is the ratio of the probability that the bit value is 1 and the probability that the bit value is 0 obtained through soft decision
  • the hard value corresponding to 1 bit is through hard decision (hard decision).
  • the obtained value of this bit is 0 or 1.
  • merging the decoding information corresponding to the two transmitted data respectively refers to summing the two decoding information. Determining that the data of a certain transmission participates in the merging means that the decoding information corresponding to the data of the transmission can be combined with the previously saved decoding information or the combined result of the previously saved decoding information, that is, summation.
  • the terminal device fails to decode the transmission block of the initial transmission, and the terminal device saves the LLR corresponding to the transmission block of the initial transmission.
  • the terminal device fails to decode the transmission block of the initial transmission, and the terminal device saves the LLR corresponding to the transmission block of the initial transmission.
  • the terminal device saves the LLR corresponding to the transmission block of the initial transmission.
  • the terminal device saves the sum of the LLR corresponding to the transport block of the first transmission and the LLR corresponding to the transport block of the first retransmission. .
  • the terminal device will combine the LLR corresponding to the first transmission block with the first retransmission. The sum of LLRs corresponding to the retransmitted transport block is discarded, and only the LLR corresponding to the second retransmitted transport block is used for decoding.
  • the above-mentioned normal transmission refers to the use of time-frequency resources for transmitting eMBB service data in the network device to transmit eMBB service data to the terminal device
  • the above-mentioned abnormal transmission means that the URLLC service is bursty, in order to improve the system Resource utilization.
  • Network equipment usually does not reserve resources for URLLC service data transmission. Therefore, network equipment uses some or all of the time-frequency resources used to transmit eMBB service data to transmit URLLC service data to terminal equipment. No eMBB service data is transmitted.
  • the decoding method provided in this application can be applied to, but not limited to, the normal transmission, abnormal transmission, and normal transmission scenarios in which the above-mentioned network device transmits data to the terminal device multiple times, and can also be applied to other networks.
  • the scenario where the device transmits data to the terminal device multiple times for example, the network device performs abnormal transmission, the abnormal transmission, the normal transmission scenario in turn during the process of multiple data transmission to the terminal device, for example, the network device transmits data to the terminal device multiple times
  • the scenarios of abnormal transmission, normal transmission, and normal transmission are sequentially performed.
  • Another example is the scenario of performing normal transmission, normal transmission, and normal transmission sequentially during the process of multiple data transmissions from a network device to a terminal device.
  • the number of times the network device transmits data to the terminal device may be greater than or equal to 3.
  • this application provides a decoding method to reduce the retransmission probability of eMBB service data.
  • the decoding method can be executed by a terminal device or a wireless communication device provided in the terminal device.
  • the wireless communication device may be a baseband processor or a system on chip (SoC).
  • SoC system on chip
  • Step 901 The terminal device receives the k-th retransmitted data from the network device, where k is a positive integer greater than or equal to 2.
  • Step 902 The terminal device receives the instruction information from the network device.
  • the terminal device receiving the instruction information may be before the terminal device receives the k-th retransmitted data from the network device, or after the terminal device receives the k-th retransmitted data from the network device. Therefore, the order of step 901 and step 902 does not limit the specific timing of these two steps.
  • Step 903 The terminal device judges whether the received data of the k-1th retransmission from the network device participates in the merging according to the instruction information, if yes, execute step 904b or step 904c, otherwise execute step 904a.
  • step 904c is executed, and the terminal device determines the received data from the network device according to the indication information. If the data retransmitted for the k-1th time on the network device does not participate in the merging, step 904a is executed.
  • the terminal device determines according to the indication information that the data received from the network device for the k-1th retransmission participates in the merging, and step 904b is executed.
  • the terminal device determines the received data according to the indication information.
  • the data from the k-1th retransmission from the network device does not participate in the merging, and step 904a is executed.
  • Step 904a According to the indication information, it is determined that the data of the k-1th retransmission does not participate in the merging, and the terminal device performs decoding based on the first merging result and the data of the kth retransmission.
  • Step 904b Determine according to the instruction information that the data of the k-1th retransmission participates in the merging, and the terminal device performs the process based on the first merging result, the decoding information corresponding to the data of the k-1th retransmission, and the data of the kth retransmission. Decoding.
  • the first merging result is based on at least one data participating in the merging
  • the corresponding decoding information is determined.
  • Step 904c According to the instruction information, it is determined that the data of the k-1th retransmission participates in the merging, and the terminal device performs decoding based on the second merging result and the data of the kth retransmission.
  • the second combination result is the combination result of the combination of the first combination result and the decoding information corresponding to the k-1th retransmitted data.
  • the indication information may directly indicate whether the data retransmitted for the k-1th time participates in merging, or indirectly indicate whether the data retransmitted for the k-1th time participates in merging, which is not limited in this application.
  • the following examples illustrate two possible designs in which the indication information indirectly indicates whether the data retransmitted for the k-1th time participates in the merge.
  • the indication information includes CBGFI, and CBGFI is carried by DCI.
  • the terminal device determines that the k-1th retransmitted data does not participate in the merging, or when the CBGFI indicates the k-1th retransmitted data When the reception may not be affected, the terminal device determines that the data of the k-1th retransmission participates in the merging.
  • CBGFI when the value of CBGFI is 0, CBGFI indicates that the reception of the k-1th retransmitted data may be affected, and the terminal device determines that the k-1th retransmitted data does not participate in merging. Or, when the value of CBGFI is 1, CBGFI indicates that the reception of the k-1th retransmitted data may not be affected, and the terminal device determines that the k-1th retransmitted data participates in merging.
  • the correspondence between the value of CBGFI and the content indicated by CBGFI is specified by the communication protocol. With the update of the communication protocol, the correspondence between the value of CBGFI and the content indicated by CBGFI may change, or The number of bits occupied by CBGFI may increase, which is not limited in this application.
  • the data retransmitted for the k-1th time is one or more CBs or one or more CBGs retransmitted for the k-1th time.
  • the network device configures the UE to perform CBG-based PDSCH transmission based on high-level signaling. If the CBGFI field in the DCI of the scheduled PDSCH indicates that the reception of the previous transmission of several CBGs for this transmission may be affected (assuming The last transmission was the k-1th retransmission), the UE determines that several CBGs of the k-1th retransmission do not participate in the combination.
  • the CBGFI field in the DCI that schedules the PDSCH may also indicate that the last transmission of several CBGs in this transmission can participate in merging.
  • each CB corresponds to a CRC
  • the terminal device can only provide feedback to the CBG. Therefore, when one CB in a CBG decodes successfully and one CB fails to decode, The network device will retransmit these two CBs, and the terminal device can only store the decoding information corresponding to the CB that failed to decode, and when receiving the two CBs retransmitted by the network device, only for the previous decoding failure
  • the CB corresponding to the two retransmitted CBs and the stored decoding information corresponding to the CB whose decoding failed last time are decoded.
  • the terminal device may also store the decoding information corresponding to the two CBs, and decode both CBs when receiving the two CBs retransmitted by the network device.
  • the indication information includes PI; PI is carried by DCI.
  • the terminal device determines that the k-1th retransmitted data does not participate in the combination; or the PI indicates that the k-1th retransmitted data is used to transmit the k-1
  • the time-frequency resource of the data retransmitted for the second time is not preempted, and the terminal device determines that the data retransmitted for the k-1th time participates in the combination.
  • the bit indicates the value of the bit used to transmit the data of the k-1th retransmission.
  • the time-frequency resource is preempted, and the terminal device determines that the data of the k-1th retransmission does not participate in the merging; or the value of the bit corresponding to the time-frequency resource used to transmit the data of the k-1th retransmission in the PI is When 0, this bit indicates that the time-frequency resource used to transmit the data of the k-1th retransmission is not preempted, and the terminal device determines that the data of the k-1th retransmission participates in merging.
  • the correspondence between the value of each bit in the PI and the content indicated by the bit is specified by the communication protocol. With the update of the communication protocol, the value of each bit in the PI corresponds to the value indicated by the bit.
  • the corresponding relationship of the content of the may change, or the number of bits included in the PI may change, which is not limited in this application.
  • the data retransmitted for the k-1th time is data retransmitted on a time-frequency resource indicated by the PI for the k-1th time.
  • a time-frequency resource may include a symbol group and a PRB subset.
  • a time-frequency resource is divided into 14 time-frequency sub-resources.
  • the 14-bit bitmap included in the PI can indicate each time-frequency resource. Whether the child resource is preempted.
  • each bit in the 14-bit PI can indicate Whether a time-frequency resource is preempted, if the time-frequency resource is preempted, the data transmitted on the time-frequency resource does not participate in the merge, if the time-frequency resource is not preempted, the data transmitted on the time-frequency resource Participate in the merger.
  • the indication information can also be carried by a medium access control control element (MAC CE).
  • the above indication information can be carried by the above MAC CE, which can reduce Latency, but the overhead may be larger.
  • the indication information can directly indicate whether the data of the k-1th retransmission participates in the merger, or indirectly indicate whether the data of the k-1th retransmission participates in the merger, which is not limited in this application .
  • the indication information may also be carried by radio resource control (Radio Resource Control, RRC) signaling. Carrying the above indication information through RRC signaling can reduce overhead, but the delay may be larger than the indication information carried by the MAC CE.
  • RRC Radio Resource Control
  • the indication information can directly indicate whether the k-1th retransmitted data participates in merging, or indirectly indicate whether the k-1th retransmitted data participates in merging, which is not limited in this application.
  • the terminal device can adopt but not limited to the following design to save the decoded information that needs to be saved after the decode fails.
  • the terminal device determines according to the instruction information that the received data of the k-1th retransmission from the network device participates in the merging, and then decodes the data based on the second merging result and the k-th retransmitted data, and the terminal device determines to receive the data according to the instruction information
  • the data from the k-1th retransmission from the network device does not participate in the merging, and the decoding is performed based on the first merging result and the k-th retransmitted data.
  • the terminal device can save the first combination result and the second combination result, and when it is determined according to the instruction information that the data received from the network device for the k-1th retransmission participates in the combination, it is based on the second combination result and the second combination result.
  • the k-th retransmitted data is decoded, and when it is determined according to the instruction information that the k-1 retransmitted data received from the network device does not participate in the combination, based on the first combination result and the k-th retransmitted data Decoding.
  • the terminal device determines that the decoding is performed based on the first combination result and the k-th retransmission data and the decoding fails, the first combination result and the fifth combination result are stored, and the fifth combination result is the first combination result and the k-th combination result.
  • the combined result of the combined decoding information corresponding to the transmitted data At this time, the terminal device saves the first combination result and the fifth combination result. Further, the terminal device receives the k+1 retransmission data from the network device, and determines the received data from the network device according to the instruction information.
  • the decoding is performed based on the fifth merge result and the k+1 retransmitted data, and the kth retransmitted data received from the network device is determined according to the instruction information to not participate in the merge.
  • decoding is performed based on the first merging result and the k+1th retransmitted data.
  • the first combination result and the fifth combination result can be stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is a process for data scheduling from the first data transmission to the kth retransmission.
  • the allocated storage unit, and the second storage unit is a storage unit allocated for any unscheduled process.
  • the terminal device determines that the decoding is performed based on the second combined result and the k-th retransmitted data and the decoding fails, the second combined result and the fourth combined result are stored, and the fourth combined result is the second combined result and the k-th combined result.
  • the terminal device saves the second combination result and the fourth combination result.
  • the terminal device receives the k+1 retransmission data from the network device, and determines the received data from the network device according to the instruction information. When k times of retransmitted data participates in the merge, it is decoded based on the fourth merge result and the k+1 retransmitted data. After determining the received data from the network device for the k th retransmission according to the instruction information, it does not participate.
  • merging decoding is performed based on the second merging result and the k+1th retransmitted data.
  • the second combined result and the fourth combined result are stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is the data scheduling process for the data from the first transmission to the kth retransmission
  • the allocated storage unit, and the second storage unit is a storage unit allocated for any unscheduled process.
  • the terminal device receives the initial transmission data from the network device and determines that the decoding of the initial transmission data fails, and then stores the decoding information corresponding to the initial transmission data.
  • the terminal device sends a decoding failure message for the first transmitted data to the network device, and the terminal device receives the first retransmitted data from the network device.
  • the terminal device determines that the first transmitted data participates in the merging, based on the decoding corresponding to the first transmitted data.
  • the information is decoded with the data of the first retransmission, and the terminal device determines that the decoding has failed, and the decoding information corresponding to the first transmission data is stored, and the decoding information corresponding to the first transmission data corresponds to the data corresponding to the first retransmission.
  • the combined result of the combined decoding information is performed by the data of the first retransmission.
  • the decoding information corresponding to the first transmission data, and the decoding information corresponding to the first transmission data and the decoding information corresponding to the first retransmission data are combined, and the combined result is stored in the first storage unit, or the first storage A unit and a second storage unit, the first storage unit is a storage unit allocated for the process of data scheduling from the first data transmission to the kth retransmission, and the second storage unit is a storage unit allocated for any unscheduled process.
  • the terminal device determines according to the instruction information that the received data of the k-1th retransmission from the network device participates in the merging, and then based on the first merging result, the decoding information corresponding to the k-1th retransmitted data and the kth The retransmitted data is decoded, and the terminal device determines according to the instruction information that the received data of the k-1th retransmission from the network device does not participate in the merge, and then decodes the data based on the first merge result and the k-th retransmitted data. code.
  • the terminal device can save the first combination result and the decoding information corresponding to the k-1th retransmitted data, and determine the received k-1th retransmitted data from the network device according to the instruction information.
  • decoding is performed based on the first merging result, the decoding information corresponding to the k-1th retransmitted data, and the kth retransmitted data, and the kth received from the network device is determined according to the instruction information.
  • the decoding is performed based on the first combination result and the data of the kth retransmission.
  • the terminal device determines that the decoding is performed based on the first combined result and the k-th retransmitted data and the decoding fails, and then stores the decoding information corresponding to the first combined result and the k-th retransmitted data. At this time, the terminal device saves the first combined result and the decoding information corresponding to the k-th retransmitted data. Further, the terminal device receives the k+1 retransmitted data from the network device, and then determines according to the instruction information.
  • decoding is performed based on the first merging result, the decoding information corresponding to the kth retransmitted data, and the k+1 retransmitted data
  • decoding is performed based on the first combination result and the data of the k+1th retransmission.
  • the first combination result and the decoding information corresponding to the k-th retransmitted data are stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is for the first transmission of the data to the k-th storage unit.
  • the storage unit allocated by the process of the retransmission data scheduling, and the second storage unit is the storage unit allocated for any unscheduled process.
  • the terminal device determines that decoding is performed based on the first combination result, the decoding information corresponding to the k-1th retransmission data, and the kth retransmission data and the decoding fails, and the third combination result and the kth retransmission are stored.
  • the decoded information corresponding to the transmitted data, and the third merged result is the merged result of the first merged result and the decoded information corresponding to the k-1th retransmitted data.
  • the terminal device saves the third combined result and the decoding information corresponding to the k-th retransmitted data. Further, the terminal device receives the k+1 retransmitted data from the network device, and then determines according to the instruction information.
  • the received data of the kth retransmission from the network device participates in the merging, it is decoded based on the third merging result, the decoding information corresponding to the kth retransmitted data, and the k+1 retransmitted data,
  • decoding is performed based on the third combination result and the data of the k+1th retransmission.
  • the decoding information corresponding to the third combined result and the kth retransmitted data is stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is for the first transmission of data to the kth retransmission.
  • the storage unit allocated by the process of the retransmission data scheduling, and the second storage unit is the storage unit allocated for any unscheduled process.
  • the terminal device receives the initial transmission data from the network device and determines that the decoding of the initial transmission data fails, and then stores the decoding information corresponding to the initial transmission data.
  • the terminal device sends a decoding failure message for the first transmitted data to the network device, and the terminal device receives the first retransmitted data from the network device.
  • the terminal device determines that the first transmitted data participates in the merging, based on the decoding corresponding to the first transmitted data.
  • the information is decoded with the data of the first retransmission, and the terminal device determines that the decoding has failed, and then stores the decoding information corresponding to the first transmission data and the decoding information corresponding to the data retransmitted the first time.
  • the decoding information corresponding to the first transmission data and the decoding information corresponding to the first retransmission data are stored in the first storage unit, or the first storage unit and the second storage unit, and the first storage unit is for the first transmission
  • the data arrives at the storage unit allocated by the data scheduling process of the kth retransmission, and the second storage unit is the storage unit allocated for any unscheduled process.
  • first storage unit and the second storage unit are storage units respectively allocated for different processes.
  • first storage unit and the second storage unit may be buffers.
  • the first storage unit and the second storage unit may be storage units located in the terminal device, or storage units coupled with the terminal device. Specifically, the first storage unit and the second storage unit may occupy part of the storage space in the non-volatile memory, or may also occupy part of the storage space in the volatile memory (volatile memory).
  • the non-volatile memory may include but is not limited to hard disk (HDD) or solid-state drive (SSD), etc.
  • the volatile memory may include but not limited to random-access memory (random-access memory). memory, RAM) or Static Random-Access Memory (SRAM), etc.
  • FIG. 9 The embodiment shown in FIG. 9 will be described in detail below with reference to specific examples.
  • Example 1 As shown in Fig. 10, the decoding method provided by this application is described for a scene with only CBGFI.
  • a PDSCH contains 2 TBs, each TB may contain one or more CBs, and the CBs contained in each TB can be divided into several CBGs.
  • the gNB configures the UE to perform CBG-based PDSCH transmission through high-level signaling.
  • One CBG can correspond to one ACK or NACK.
  • the gNB sends the DCI and the initial PDSCH corresponding to the initial transmission PDSCH of a certain process.
  • the UE receives the DCI and the initial PDSCH corresponding to the initial transmission PDSCH of the process.
  • the DCI here may include a hybrid automatic repeat request (HARQ) process number, and time-frequency resource information of the initial PDSCH transmission, and so on.
  • HARQ hybrid automatic repeat request
  • the UE obtains the LLR corresponding to the first transmitted PDSCH for the first transmitted PDSCH, and the UE decodes the first transmitted PDSCH based on the LLR corresponding to the first transmitted PDSCH.
  • the decoding of several CBs fails, and the LLR of one of the failed CBs is decoded.
  • LLR1 this CB is denoted as the first CB.
  • the LLR1 may be stored in a first storage unit, and the first storage unit is a storage unit allocated for the currently scheduled process.
  • the UE For the CBG where the first CB is located, the UE sends a NACK to the gNB. Correspondingly, the gNB receives the NACK from the UE.
  • the gNB sends the DCI corresponding to the first retransmission of the PDSCH and the first retransmission of the PDSCH.
  • the UE receives the DCI corresponding to the first retransmission of the PDSCH and the first retransmission of the PDSCH.
  • the DCI corresponding to the first retransmission of PDSCH includes CBGTI and CBGFI.
  • CBGTI indicates that this retransmission includes several CBGs
  • CBGFI includes 1 bit
  • CBGFI indicates whether several CBGs of this retransmission are affected during the initial transmission.
  • the initial transmission of the PDSCH is a normal transmission
  • the CBGFI indicates that the initial transmission of several CBGs retransmitted this time can participate in the merge, and then LLR1 participates in the merge.
  • the DCI corresponding to the first retransmission of the PDSCH includes CBGTI and CBGFI.
  • CBGTI indicates that this retransmission includes several CBGs
  • CBGFI includes several bits, respectively indicating whether each CB or CBG in this retransmission was initially transmitted. affected. It is assumed here that the initial transmission of the PDSCH is a normal transmission, and the UE determines according to the CBGFI that several CBs or CBGs retransmitted this time are not affected during the initial transmission, and then LLR1 participates in the merger.
  • the UE obtains the LLR corresponding to the first CB in the first retransmitted PDSCH for the first retransmitted PDSCH, denoted as LLR2, uses LLR1+LLR2 to decode the first CB, the UE fails to decode, and stores LLR1 and LLR1+LLR2.
  • LLR1 and LLR1+LLR2 Take the storage of LLR1 and LLR1+LLR2 as an example.
  • LLR1 and LLR1+LLR2 can be stored in the first storage unit, and can also be stored in the first storage unit and the second storage unit.
  • the second storage unit is storage allocated for unscheduled processes. unit.
  • store LLR1 and LLR1+LLR2 in the first storage unit or store LLR1 in the first storage unit, store LLR1+LLR2 in the second storage unit, or store LLR1 in the second storage unit, and store LLR1+LLR2 Stored in the first storage unit, or according to one or more of the transmission unit size, the size of LLR1, and the size of LLR1+LLR2, it is determined whether to store both LLR1 and LLR1+LLR2 in the first storage unit, or to store them separately in the first storage unit.
  • a storage unit and a second storage unit It should be understood that the foregoing solution is only an example, and this application does not limit the specific solution of the storage unit occupied by the LLR that the UE needs to store.
  • the UE For the CBG where the first CB is located, the UE sends a NACK to the gNB. Correspondingly, the gNB receives the NACK from the UE.
  • the gNB sends the DCI corresponding to the second retransmission of the PDSCH and the second retransmission of the PDSCH.
  • the UE receives the DCI corresponding to the second retransmission of the PDSCH and the second retransmission of the PDSCH.
  • the DCI corresponding to the second retransmission of PDSCH includes CBGTI and CBGFI.
  • CBGTI indicates that this retransmission includes several CBGs
  • CBGFI includes 1 bit
  • CBGFI indicates that several CBGs of this retransmission are in the first retransmission. Whether it is affected. It is assumed here that the first PDSCH retransmission is an abnormal transmission, and CBGFI indicates that several CBGs retransmitted this time may be affected during the first retransmission of the PDSCH, and LLR2 does not participate in the merger.
  • the DCI corresponding to the second retransmission of the PDSCH includes CBGTI and CBGFI.
  • CBGTI indicates that this retransmission includes several CBGs
  • CBGFI includes several bits, indicating that each CB or CBG retransmitted this time is retransmitted in the first retransmission. Whether the transmission is affected.
  • the first PDSCH retransmission is an abnormal transmission
  • the CBGFI corresponding to the first CB indicates that the first CB of this retransmission may be affected during the first retransmission, or the CBGFI corresponding to the CBG where the first CB is located indicates this
  • the CBG where the first CB of the second retransmission is located may be affected during the first retransmission, so LLR2 does not participate in the merge.
  • the UE obtains the LLR corresponding to the first CB in the second retransmitted PDSCH, which is recorded as LLR3, and uses LLR1+LLR3 to decode the first CB.
  • the UE fails to decode, and stores LLR1 and LLR1+LLR3.
  • the UE determines that LLR2 does not participate in the merging, and the UE selects LLR1 and LLR3 to merge and decode from the stored LLR1 and LLR1+LLR2.
  • LLR1 and LLR1+LLR3 can be stored in the first storage unit, and can also be stored in the first storage unit and the second storage unit.
  • Example 1 using the method provided in Example 1, it is possible to use the normally transmitted data before the abnormal transmission to participate in the merging, and to achieve decoding using the decoding information corresponding to the data participating in the merging in the previous multiple transmissions, thereby improving the PDSCH reception performance. , To reduce the probability of retransmission. In addition, without increasing the storage space, using the storage space of the unscheduled process to store the LLRs that need to be stored can improve resource utilization.
  • Example 2 As shown in Figure 11, the decoding method provided by this application is described for a scenario with only PI.
  • the gNB sends the DCI and the initial PDSCH corresponding to the initial transmission PDSCH of a certain process.
  • the UE receives the DCI and the initial PDSCH corresponding to the initial transmission PDSCH of the process.
  • the DCI here may include the HARQ process number, the time-frequency resource information of the initial PDSCH, and so on.
  • the UE obtains the LLR corresponding to the initial PDSCH for the initial transmission PDSCH, and the UE decodes the initial transmission PDSCH based on the LLR corresponding to the initial transmission PDSCH. If several CB decoding fails, the LLR of one of the CBs that fails to decode is recorded. As LLR1, this CB is marked as the first CB.
  • the LLR1 may be stored in a first storage unit, and the first storage unit is a storage unit allocated for the currently scheduled process.
  • the UE For the CBG where the first CB is located, the UE sends a NACK to the gNB. Correspondingly, the gNB receives the NACK from the UE.
  • the gNB sends DCI.
  • the DCI includes PI.
  • the PI indicates that part of the time-frequency resource for transmitting the first CB in the initial PDSCH is preempted, and part of the time-frequency resource for transmitting the first CB is not preempted.
  • the LLR (denoted as LLR11) corresponding to the data transmitted on the time-frequency resource participates in the merger.
  • the UE receives the PI from the gNB.
  • LLR1 includes the LLR corresponding to the data transmitted on the unpreempted time-frequency resource in the first CB in the initial transmission PDSCH (ie LLR11) and the data corresponding to the data transmitted on the preempted time-frequency resource in the first CB in the initial transmission PDSCH LLR.
  • the gNB sends the DCI corresponding to the first retransmission of the PDSCH and the first retransmission of the PDSCH.
  • the UE receives the DCI corresponding to the first retransmission of the PDSCH and the first retransmission of the PDSCH.
  • the gNB can send DCI (the DCI includes PI) before the gNB receives the NACK from the UE, or after the gNB receives the NACK from the UE, or after the gNB sends the first retransmission of the DCI and the PDSCH corresponding to the PDSCH. Before the first retransmission of the PDSCH, or after the gNB sends the DCI corresponding to the first retransmission of the PDSCH and the first retransmission of the PDSCH, this application does not limit this.
  • the UE may receive DCI (the DCI includes PI) before the UE receives the DCI corresponding to the first retransmission of the PDSCH and the PDSCH corresponding to the first retransmission, or before the UE receives the DCI corresponding to the first retransmission of the PDSCH and the first retransmission. After the transmitted PDSCH.
  • DCI includes PI
  • S1106 The UE obtains the LLR corresponding to the first CB in the first retransmitted PDSCH for the first retransmitted PDSCH, denoted as LLR2, uses LLR11+LLR2 to decode the first CB, the UE fails to decode, and the UE saves LLR11 And LLR2.
  • LLR11 and LLR2 can be stored in the first storage unit, and can also be stored in the first storage unit and the second storage unit.
  • the second storage unit is a storage unit allocated for unscheduled processes. For example, store both LLR11 and LLR2 in the first storage unit, or store LLR11 in the first storage unit, and store LLR2 in the second storage unit, or store LLR11 in the second storage unit, and store LLR2 in the first storage unit.
  • the unit or according to one or more of the transmission unit size, the LLR1 size, and the LLR2 size, determines whether to store both LLR11 and LLR2 in the first storage unit or store them in the first storage unit and the second storage unit respectively. It should be understood that the foregoing solution is only an example, and this application does not limit the specific solution of the storage unit occupied by the LLR that the UE needs to store.
  • the UE For the CBG where the first CB is located, the UE sends a NACK to the gNB. Correspondingly, the gNB receives the NACK from the UE.
  • the gNB sends DCI.
  • the DCI includes PI.
  • the PI indicates that part of the time-frequency resource for transmitting the first CB in the first retransmission of the PDSCH is preempted, and part of the time-frequency resource for transmitting the first CB is not preempted.
  • the LLR (denoted as LLR22) corresponding to the data transmitted on the preempted time-frequency resource participates in the merger.
  • the UE receives the PI from the gNB.
  • LLR2 includes the LLR corresponding to the data transmitted on the unoccupied time-frequency resource in the first CB in the first retransmission of PDSCH (ie LLR22) and the first CB in the first retransmission of PDSCH in the preempted time-frequency resource.
  • the LLR corresponding to the data transmitted on the resource is the LLR corresponding to the data transmitted on the resource.
  • the gNB sends the DCI corresponding to the second retransmission of the PDSCH and the second retransmission of the PDSCH.
  • the UE receives the DCI corresponding to the second retransmission of the PDSCH and the second retransmission of the PDSCH.
  • S1110 The UE obtains the LLR corresponding to the second retransmitted PDSCH for the second retransmitted PDSCH, which is marked as LLR3, and uses LLR11+LLR22+LLR3 to decode the first CB. The UE fails to decode, and the UE saves LLR11+LLR22 And LLR3.
  • LLR11+LLR22 and LLR3 can be stored in the first storage unit, and can also be stored in the first storage unit and the second storage unit. For example, store LLR11+LLR22 and LLR3 in the first storage unit, or store LLR11+LLR22 in the first storage unit, store LLR3 in the second storage unit, or store LLR11+LLR22 in the second storage unit, and store LLR3 Stored in the first storage unit, or according to one or more of the transmission unit size, LLR11+LLR22 size, and LLR3 size, determine whether to store both LLR11+LLR22 and LLR3 in the first storage unit or separately store them in the first storage Unit and second storage unit. It should be understood that the foregoing solution is only an example, and this application does not limit the specific solution of the storage unit occupied by the LLR that the UE needs to store.
  • the UE stores 3N LLRs. As shown in Figure 12, the first transmission is redundancy version 0, and the first retransmission is redundancy version 1. White represents data that PI indicates that the resource is not preempted, and black represents data that PI indicates that the resource is preempted.
  • the UE After the initial transmission and decoding of the code block fails, the UE stores the LLRs (denoted as LLR1) corresponding to the part 1, part 2, part 3, and part 4 respectively during the initial transmission.
  • the UE learns from the PI that the time-frequency resources corresponding to part 1 are preempted, and the time-frequency resources corresponding to part 2, part 3, and part 4 have not been preempted, and then part 2, part 3, and part 4 are not preempted.
  • the corresponding LLRs (denoted as LLR11) and the corresponding LLRs of part 5, part 6, and part 7 (denoted as LLR2) are merged and decoded accordingly. After the decoding fails, two LLRs are stored:
  • the first copy LLR11;
  • the UE learns from the PI that the time-frequency resources corresponding to part 6 are preempted, and the time-frequency resources corresponding to parts 5 and 7 are not preempted.
  • Part 5 and part 7 respectively correspond to the LLR (denoted as LLR22) and part 8 and part 9 respectively correspond to the LLR (denoted as LLR3) and are merged and decoded. After the decoding fails, two LLRs are stored.
  • the first copy the combined LLR of LLR11 and LLR22 (denoted as LLR11+LLR22);
  • Example 1 using the method provided in Example 1, it is possible to use the normally transmitted data before the abnormal transmission to participate in the merging, and to achieve decoding using the decoding information corresponding to the data participating in the merging in the previous multiple transmissions, thereby improving the PDSCH reception performance. , To reduce the probability of retransmission. In addition, without increasing the storage space, using the storage space of the unscheduled process to store the LLRs that need to be stored can improve resource utilization.
  • the target data is transmitted in the first transmission without interference data, but the decoding of the target data fails.
  • CBGFI and PI indicate that the initial transmission is normal transmission.
  • the first retransmission transmits interference data without target data, and the decoding fails.
  • CBGFI and PI indicate that the first retransmission is an abnormal transmission.
  • the target data is retransmitted for the second time without interfering data.
  • the target data is transmitted in the first transmission without interference data, but the decoding of the target data fails.
  • the first retransmission transmits the target data without interference data.
  • scenario 1 if the performance of scenario 1 and scenario 2 are equivalent, for example, the probability of successful decoding of the second retransmission in scenario 1 is equivalent to the probability of successful decoding of the first retransmission in scenario 2, then It shows that scenario 1 adopts the decoding method provided in the embodiment of this application; if the performance of scenario 1 is poor, for example, the probability of successful decoding of the second retransmission in scenario 1 is lower than that of the first retransmission of decoding in scenario 2. The probability of success indicates that scenario 1 does not use the decoding method provided in the embodiment of the present application.
  • the maximum transport block size (TBS) is scheduled.
  • TBS transport block size
  • scenario 1 is worse than that of scenario 2, and the scheduling is smaller than the TBS.
  • the performance of 1 is equivalent to the performance of scenario 2, which indicates that the UE uses the remaining storage space of the scheduled process to store the decoding information that needs to be stored.
  • the performance of scenario 1 is worse than the performance of scenario 2, and when there are other processes other than the process corresponding to the transmission target data that are not scheduled, The performance of scenario 1 is equivalent to the performance of scenario 2, which indicates that in scenario 1, the UE uses the storage space of other unscheduled processes to store the decoding information that needs to be stored.
  • the terminal device in order to realize the above-mentioned functions, includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • an embodiment of the present application further provides an apparatus 1300, and the apparatus 1300 includes a transceiver unit 1302 and a processing unit 1301.
  • the apparatus 1300 is used to implement the function of the terminal device in the foregoing method.
  • the device may be a terminal device, or a device in a terminal device, such as a chip system.
  • the transceiver unit 1302 is configured to receive the k-th retransmitted data from the network device, where k is a positive integer greater than or equal to 2;
  • the transceiver unit 1302 is also used to receive instruction information from the network device;
  • the processing unit 1301 is configured to determine, according to the instruction information, that the received data of the k-1th retransmission from the network device participates in the merging, and based on the first merging result, the decoding information corresponding to the k-1th retransmitted data and Decoding the k-th retransmitted data;
  • the first merging result is based on at least one data participating in the merging
  • the corresponding decoding information is determined.
  • the processing unit 1301 and the transceiver unit 1302 please refer to the record in the above method embodiment.
  • the division of modules in the embodiments of this application is illustrative, and it is only a logical function division. In actual implementation, there may be other division methods.
  • the functional modules in the various embodiments of this application can be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the device may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device includes a processor and an interface circuit, and the interface circuit is configured to receive and transmit code instructions to the processor; the processor executes the code instructions to execute the methods of the foregoing embodiments.
  • the processor completes the function of the aforementioned processing unit 1301, and the interface circuit completes the function of the aforementioned transceiver unit 1302.
  • an embodiment of the present application further provides an apparatus 1400.
  • the device 1400 includes: a communication interface 1401, at least one processor 1402, and at least one memory 1403.
  • the communication interface 1401 is used to communicate with other devices through a transmission medium, so that the device used in the apparatus 1400 can communicate with other devices.
  • the memory 1403 is used to store computer programs.
  • the processor 1402 calls the computer program stored in the memory 1403, and transmits and receives data through the communication interface 1401 to implement the method in the foregoing embodiment.
  • the memory 1403 is used to store a computer program; the processor 1402 calls the computer program stored in the memory 1403, and executes the method executed by the terminal device in the foregoing embodiment through the communication interface 1401.
  • the communication interface 1401 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.
  • the processor 1402 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and may implement or execute the The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the memory 1403 may be a non-volatile memory, such as a hard disk or a solid state hard disk, or a volatile memory, such as a random access memory.
  • the memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this.
  • the memory in the embodiment of the present application may also be a circuit or any other device capable of realizing a storage function.
  • the memory 1403 is coupled with the processor 1402.
  • the coupling in the embodiments of the present application is an interval coupling or a communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the memory 1403 may also be located outside the apparatus 1400.
  • the processor 1402 may cooperate with the memory 1403 to operate.
  • the processor 1402 may execute program instructions stored in the memory 1403.
  • At least one of the at least one memory 1403 may also be included in the processor 1402.
  • the embodiment of the present application does not limit the connection medium between the communication interface 1401, the processor 1402, and the memory 1403.
  • the memory 1403, the processor 1402, and the communication interface 1401 may be connected by a bus, and the bus may be divided into an address bus, a data bus, and a control bus.
  • the apparatus in the embodiment shown in FIG. 13 may be implemented by the apparatus 1400 shown in FIG. 14.
  • the processing unit 1301 may be implemented by the processor 1402
  • the transceiver unit 1302 may be implemented by the communication interface 1401.
  • the embodiments of the present application also provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program runs on a computer, the computer executes the methods shown in each of the foregoing embodiments.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented by software, it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state hard disk).

Abstract

一种译码方法、装置及系统，该方法包括：接收来自于网络设备的第k次重传的数据，接收来自于网络设备的指示信息；根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码；其中，接收的来自于网络设备的初传数据至接收的来自于网络设备的第k-2次重传的数据中存在至少一个参与合并的数据，第一合并结果是基于至少一个参与合并的数据分别对应的译码信息确定的。采用上述方法，能够实现使用之前多次传输中参与合并的数据对应的译码信息进行译码，进而能够降低重传概率。

Description

一种译码方法、装置及系统 技术领域
本申请涉及无线通信技术领域，特别涉及一种译码方法、装置及系统。
背景技术
移动通信技术已经深刻地改变了人们的生活，但人们对更高性能的移动通信技术的追求从未停止。为了应对未来爆炸性的移动数据流量增长、海量移动通信的设备连接、不断涌现的各类新业务和应用场景，第五代(the fifth generation，5G)移动通信系统应运而生。5G移动通信系统称为新无线(new radio，NR)。国际电信联盟(international telecommunication union，ITU)为5G以及未来的移动通信系统定义了三大类应用场景：增强型移动宽带(enhanced mobile broadband，eMBB)、高可靠低时延通信(ultra reliable and low latency communications，URLLC)以及海量机器类通信(massive machine type communications，mMTC)。
由于URLLC业务具有突发性，为了提高系统资源利用率，基站通常不会为URLLC业务的下行数据传输预留资源。当URLLC业务数据到达基站时，如果此时没有空闲的时频资源，基站为了满足URLLC业务的超短时延需求，无法等待将本次调度的eMBB业务数据传输完成之后再对URLLC业务数据进行调度。基站可以采用抢占的方式，为URLLC业务数据分配时频资源。如图1所示，这里的抢占的时频资源是基站在已经分配的、用于传输eMBB业务数据的时频资源中的部分或全部的时频资源，基站在抢占的时频资源上传输URLLC业务数据不传输eMBB业务数据。
在eMBB业务的PDSCH传输中，当数据传输未被影响时，约有10％的概率会出现1次重传，约有1％的概率会出现2次重传。当用于传输eMBB业务数据的时频资源被突发的URLLC业务数据抢占时，将会造成eMBB业务数据的重传概率提高。
发明内容
本申请提供一种译码方法、装置及系统，用于在传输eMBB业务数据的时频资源被突发的URLLC业务数据抢占时，降低eMBB业务数据的重传概率。
第一方面，本申请提供一种译码方法，该方法可以由电子装置执行，电子装置可以是终端设备，或终端内的处理器，或终端设备内的芯片系统。该方法包括：接收来自于网络设备的第k次重传的数据，k为大于等于2的正整数；接收来自于网络设备的指示信息；根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码；其中，接收的来自于网络设备的初传数据至接收的来自于网络设备的第k-2次重传的数据中存在至少一个参与合并的数据，第一合并结果是基于至少一个参与合并的数据分别对应的译码信息确定的。
采用上述方法，当第k-1次重传的数据参与合并时能够实现使用之前多次传输中参与合并的数据对应的译码信息进行译码，进而能够提高PDSCH接收性能，降低重传概率。
在一种可能的设计中，根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码，可以采用包括但不限于以下方法：根据指示信息确定第k-1次重传的数据参与合并，基于第二合并结果和第k次重传的数据进行译码，其中，第二合并结果为第一合并结果和第k-1次重传的数据对应的译码信息进行合并的合并结果。
应理解的是，第二合并结果可以是在根据指示信息确定第k-1次重传的数据参与合并之前已经存储的，或者，在根据指示信息确定第k-1次重传的数据参与合并之后，基于第一合并结果、第k-1次重传的数据对应的译码信息进行合并，得到第二合并结果。本申请对此不作限定。
在一种可能的设计中，指示信息包括码块组擦除信息CBGFI；根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，可以采用包括但不限于以下方法：在CBGFI用于指示第k-1次重传的数据的接收可能未被影响时，则确定第k-1次重传的数据参与合并；其中，第k-1次重传的数据为第k-1次重传的一个或多个编码块CB，或一个或多个编码块组CBG。
采用上述设计，可以实现根据CBGFI确定第k-1次重传的数据参与合并。
在一种可能的设计中，指示信息包括抢占指示PI；根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，可以采用包括但不限于以下方法：在PI用于指示用于传输第k-1次重传的数据的时频资源未被抢占时，则确定第k-1次重传的数据参与合并；其中，第k-1次重传的数据为第k-1次在PI指示的一个时频资源上重传的数据。
采用上述设计，可以实现根据PI确定第k-1次重传的数据参与合并。
在一种可能的设计中，还包括：在基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码并译码失败时，存储第三合并结果和第k次重传的数据对应的译码信息，第三合并结果为第一合并结果与第k-1次重传的数据对应的译码信息进行合并的合并结果。
采用上述设计，可以实现不丢失之前参与合并的数据对应的译码信息，有助于降低重传概率。
在一种可能的设计中，第三合并结果和第k次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
采用上述设计，可以实现在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的译码信息，进而实现提高资源利用率。
在一种可能的设计中，还包括：在基于第二合并结果和第k次重传的数据进行译码并译码失败时，存储第二合并结果和第四合并结果，第四合并结果为第二合并结果与第k次重传的数据对应的译码信息进行合并的合并结果。
采用上述设计，可以实现不丢失之前参与合并的数据对应的译码信息，有助于降低重传概率。
在一种可能的设计中，第二合并结果和第四合并结果存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
采用上述设计，可以实现在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的译码信息，进而实现提高资源利用率。
在一种可能的设计中，还包括：根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并，基于第一合并结果和第k次重传的数据进行译码。
采用上述方法，当第k-1次重传的数据不参与合并时能够实现使用之前多次传输中参与合并的数据对应的译码信息进行译码，进而能够提高PDSCH接收性能，降低重传概率。
在一种可能的设计中，指示信息包括CBGFI；根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并，可以采用包括但不限于以下方法：在CBGFI用于指示第k-1次重传的数据的接收可能被影响时，则确定第k-1次重传的数据不参与合并；其中，第k-1次重传的数据为第k-1次重传的一个或多个CB，或一个或多个CBG。
采用上述设计，可以实现根据CBGFI确定第k-1次重传的数据不参与合并。
在一种可能的设计中，指示信息包括PI；根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并，可以采用包括但不限于以下方法：在PI用于指示用于传输第k-1次重传的数据的时频资源被抢占时，则确定第k-1次重传的数据不参与合并；其中，第k-1次重传的数据为第k-1次在PI指示的一个时频资源上重传的数据。
采用上述设计，可以实现根据PI确定第k-1次重传的数据不参与合并。
在一种可能的设计中，还包括：在基于第一合并结果和第k次重传的数据进行译码并译码失败时，存储第一合并结果和第五合并结果，第五合并结果为第一合并结果与第k次重传的数据对应的译码信息进行合并的合并结果。
采用上述设计，可以实现不丢失之前参与合并的数据对应的译码信息，有助于降低重传概率。
在一种可能的设计中，第一合并结果和第五合并结果存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
采用上述设计，可以实现在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的译码信息，进而实现提高资源利用率。
在一种可能的设计中，还包括：在基于第一合并结果和第k次重传的数据进行译码并译码失败时，存储第一合并结果和第k次重传的数据对应的译码信息。
采用上述设计，可以实现不丢失之前参与合并的数据对应的译码信息，有助于降低重传概率。
在一种可能的设计中，第一合并结果和第k次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
采用上述设计，可以实现在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的译码信息，进而实现提高资源利用率。
在一种可能的设计中，还包括：接收来自于网络设备的初传数据；在初传数据译码失败时，存储初传数据对应的译码信息；接收来自于网络设备的第1次重传的数据；在初传数据参与合并，且基于初传数据对应的译码信息与第1次重传的数据进行译码并译码失败时，存储初传数据对应的译码信息，以及初传数据对应的译码信息与第1次重传的数据对 应的译码信息进行合并的合并结果。
采用上述设计，可以实现不丢失初传数据对应的译码信息，有助于降低重传概率。
在一种可能的设计中，初传数据对应的译码信息，以及初传数据对应的译码信息与第1次重传的数据对应的译码信息进行合并的合并结果存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
采用上述设计，可以实现在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的译码信息，进而实现提高资源利用率。
在一种可能的设计中，还包括：接收来自于网络设备的初传数据；在初传数据译码失败时，存储初传数据对应的译码信息；接收来自于网络设备的第1次重传的数据；在初传数据参与合并，且基于初传数据对应的译码信息与第1次重传的数据进行译码并译码失败时，存储初传数据对应的译码信息，以及第1次重传的数据对应的译码信息。
采用上述设计，可以实现不丢失初传数据对应的译码信息，有助于降低重传概率。
在一种可能的设计中，初传数据对应的译码信息，以及第1次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
采用上述设计，可以实现在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的译码信息，进而实现提高资源利用率。
应理解的是，上述第一存储单元和第二存储单元是分别针对不同进程分配的存储单元，示例性地，第一存储单元和第二存储单元为缓存。
第一存储单元和第二存储单元可以位于电子装置内的存储单元，或者为与电子装置耦合的存储单元。具体的，第一存储单元和第二存储单元可以占用非易失性存储器中的部分存储空间，或者还可以占用易失性存储器中的部分存储空间。其中，非易失性存储器可以包括但不限于硬盘或固态硬盘等，易失性存储器可以包括但不限于随机存取存储器或静态随机存取存储器等。
在一种可能的设计中，指示信息由媒体访问控制控制单元MAC-CE或无线资源控制RRC信令承载。
采用上述设计，可以实现通过MAC-CE或RRC承载指示信息。
第二方面，本申请提供一种通信装置，该装置可以是终端设备，也可以是终端设备内的芯片。该装置可以包括处理单元、发送单元和接收单元。应理解的是，这里发送单元和接收单元还可以为收发单元。当该装置是终端设备时，该处理单元可以是处理器，该发送单元和接收单元可以是收发器；该终端设备还可以包括存储单元，该存储单元可以是存储器；该存储单元用于存储指令，该处理单元执行该存储单元所存储的指令，以使该终端设备执行第一方面或第一方面任意一种可能的设计中的方法。当该装置是终端设备内的芯片时，该处理单元可以是处理器，该发送单元和接收单元可以是输入/输出接口、管脚或电路等；该处理单元执行存储单元所存储的指令，以使该芯片执行第一方面或第一方面任意一种可能的设计中的方法。该存储单元用于存储指令，该存储单元可以是该芯片内的存储单元(例如，寄存器、缓存等)，也可以是该终端设备内的位于该芯片外部的存储单元(例如，只读存储器、随机存取存储器等)。
第三方面，本申请还提供一种可读存储介质，该可读存储介质存储指令，当指令被执行时，使上述第一方面的方法被实现。
第四方面，本申请还提供一种计算机程序代码，该计算机程序代码在计算机上运行时，使得计算机执行上述第一方面的方法。
第五方面，本申请还提供一种包含程序的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面的方法。
第六方面，本申请还提供一种通信装置，包括处理器和存储器；存储器用于存储计算机执行指令；处理器用于执行存储器所存储的计算机执行指令，以使通信装置执行上述第一方面的方法。
第七方面，本申请还提供一种通信装置，包括处理器和接口电路；接口电路，用于接收代码指令并传输至处理器；处理器运行代码指令以执行上述第一方面的方法。
第八方面，本申请还提供一种通信系统，通信系统包括网络设备和终端设备，终端设备执行上述第一方面的方法。
附图说明
图1为本申请中基站采用抢占的方式为URLLC业务数据分配时频资源的示意图；
图2为本申请中移动通信系统的架构示意图；
图3为本申请中PI指示的频域范围和时域范围的示意图之一；
图4为本申请中PI指示的频域范围和时域范围的示意图之二；
图5为本申请中PI对应的时频资源的划分方式为{7,2}的示意图；
图6为本申请中NR中传输块编码的示意图；
图7为本申请中信道编码的示意图；
图8为本申请中冗余版本的示意图；
图9为本申请中一种译码方法的概述流程图；
图10为本申请中针对仅有CBGFI的场景的译码流程图；
图11为本申请中针对仅有PI的场景的译码流程图；
图12为本申请中与图11对应的冗余版本示意图；
图13为本申请中装置结构示意图之一；
图14为本申请中装置结构示意图之二。
具体实施方式
下面结合附图，对本申请的实施例进行描述。
图2是本申请的实施例应用的移动通信系统的架构示意图。如图2所示，该移动通信系统包括核心网设备210、网络设备220和至少一个终端设备(230、240)。终端设备通过无线的方式与网络设备相连，网络设备通过无线或有线方式，与核心网设备连接。核心网设备与网络设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与网络设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的网络设备的功能。终端设备可以是固定位置的，也可以是可移动的。图2只 是示意图，该通信系统中还可以包括其它网络设备，例如，该通信系统还可以包括无线中继设备和无线回传设备等，在图2中未画出。本申请的实施例对该移动通信系统中包括的核心网设备、网络设备和终端设备的数量不作限定。
网络设备是终端设备通过无线方式接入到该移动通信系统中的接入设备，可以是基站(NodeB)、演进型基站(eNodeB)、NR移动通信系统中的基站、未来移动通信系统中的基站或WiFi系统中的接入节点等，本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
终端设备也可以称为终端(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
网络设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。网络设备和终端设备之间以及终端设备和终端设备之间可以通过6G以下的频谱进行通信，也可以通过6G以上的频谱进行通信，还可以同时使用6G以下的频谱和6G以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
以下对本申请涉及的主要现有技术进行介绍。
1、三大类应用场景的典型业务：
典型的eMBB业务包括：超高清视频、增强现实(augmented reality，AR)、虚拟现实(virtual reality，VR)等，这些业务的主要特点是传输数据量大、传输速率很高。
典型的URLLC业务包括：工业制造或生产流程中的无线控制、无人驾驶汽车和无人驾驶飞机的运动控制以及远程修理、远程手术等触觉交互类应用，这些业务的主要特点是要求超高可靠性、低延时，传输数据量较少以及具有突发性。
典型的mMTC业务包括：智能电网配电自动化、智慧城市等，主要特点是联网设备数量巨大、传输数据量较小、数据对传输时延不敏感，这些mMTC终端需要满足低成本和非常长的待机时间的需求。
2、URLLC业务与eMBB业务共存时的资源分配：
这里的资源包括但不限于：时域资源、频域资源、码字资源、空口资源以及波束资源等。通常系统资源的分配由网络设备来完成，下面以网络设备为例进行说明。
由于eMBB业务的数据量比较大，而且传输速率比较高，因此通常采用较长的时间调度单元进行数据传输以提高传输效率，例如，采用15kHz子载波间隔的一个时隙，对应14个时域符号，对应的时间长度为1ms。URLLC业务数据通常采用较短的时间调度单元，以 满足超短时延的需求，例如，采用15kHz子载波间隔的2个时域符号，对应的时间长度为0.14ms，或者采用60kHz子载波间隔的一个时隙，对应14个时域符号，对应的时间长度为0.25ms。
URLLC业务的数据的产生具有突发性和随机性，可能在很长一段时间内都不会产生数据包，也可能在很短时间内产生多个数据包。URLLC业务的数据包的特性会影响通信系统的资源分配方式。如果网络设备采用预留资源的方式为URLLC业务分配资源，则在无URLLC业务的时候这些资源是浪费的。而且URLLC业务的短时延特性要求数据包在极短的时间内传输完成，所以网络设备需要预留足够大的带宽给URLLC业务，从而导致资源利用率严重下降。因此，为了提高系统资源利用率，网络设备通常不会为URLLC业务的下行数据传输预留资源。当URLLC业务数据到达基站时，如果此时没有空闲的时频资源，网络设备为了满足URLLC业务的超短时延需求，可以采用抢占的方式，为URLLC业务数据分配资源。
具体的，当URLLC业务数据到达基站时，如果此时没有空闲的时频资源，基站为了满足URLLC业务的超短时延需求，无法等待将本次调度的eMBB业务数据传输完成之后再对URLLC业务数据进行调度。基站可以采用抢占的方式，为URLLC业务数据分配时频资源。如图1所示，这里的抢占的时频资源是基站在已经分配的、用于传输eMBB业务数据的时频资源中的部分或全部的时频资源，基站在抢占的时频资源上传输URLLC业务数据不传输eMBB业务数据。因此，当用于传输eMBB业务数据的时频资源被突发的URLLC业务数据抢占时，即使接收eMBB业务数据的UE知道时频资源被抢占，按照现有技术中译码方法，UE可能把URLLC业务数据当成自己的数据来进行解调和译码，从而导致译码失败。更为严重的是，对于译码失败的传输块，UE会将该传输块的软值存储下来，和重传的传输块进行软值合并，以及基于合并结果进行译码，从而导致重传的传输块出现译码失败。因此，在上述场景下，可能造成eMBB业务数据的重传概率提高。
3、现有技术中提供了以下两种通知UE时频资源被抢占的方案：
方案1：抢占指示(pre-emption indication，PI)：
抢占指示承载在组公共下行控制信息(downlink control information，DCI)里，用14比特(bit)的比特位图(bitmap)的方式指示抢占资源。bitmap指示一个或多个频域部分(N＞＝1)和/或一个或多个时域部分(M＞＝1)，{M,N}，可以取值为{14,1}或{7,2}。也就是首先把时频资源进行分块，上述分块结果是网络设备和UE都已知的，然后网络设备会发送PI，以通知UE各块时频资源是否被URLLC抢占。
承载PI的DCI的发送周期由高层参数配置，以时隙(slot)为单位。假设是周期是T INT个时隙，则每个14比特PI指示的时频范围是：
频域：整个激活带宽部分(bandwidth part，BWP)的所有资源块(resource block，RB)，记做B INT个RB。
时域：记做N INT个符号。
如图3和图4所示，PI指示的频域范围都是整个BWP。在图3中，时域N INT为28个符号，在图4中，时域N INT为18个符号。
根据高层参数配置，PI对应的时频资源有两种划分方式，14bit中每个bit对应的时频资源也不同：
{14,1}：此时时频资源从时间上被分为14份，频率上不进行划分。14bit的PI，每个 bit对应一份时频资源，又可称为一份时频子资源。比特取0表示该时频资源上可以有该用户的传输，即该时频资源未被抢占；比特取1表示该时频资源上没有该用户的传输，即该时频资源被抢占。
{7,2}：此时时频资源从时间上被分为7份，频率上被等分成2份。14bit的PI，每2比特分为一组，共七组。比特取0表示该时频资源上可以有该用户的传输；比特取1表示该时频资源上没有该用户的传输。如图5所示给出一个PI对应的时频资源的划分方式为{7,2}的示例。
方案2：码块组(code block group，CBG)擦除信息(CBG flushing out information，CBGFI)：
NR中，一个物理下行共享信道(Physical Downlink Shared Channel，PDSCH)包含1～2个传输块(Transport Block，TB)，每个TB对应一个循环冗余校验码(cyclic redundancy check，CRC)。每个TB可能包含一个或多个编码块(coded block，CB)，每个CB对应一个CRC。每个TB中包含的CB可以分为若干编码块组(coded block group，CBG)，每个CBG包含一个或多个CB。一个CBG可以对应于一个确定(acknowledge，ACK)或否定(negative acknowledge，NACK)指示。示例性地，UE可以CBG为单位向gNB反馈ACK或NACK，相应的，gNB可以CBG为单位进行数据重传。
如果高层信令配置UE进行基于CBG的PDSCH传输，UE根据下述公式确定一个传输块内的CBG个数：
M＝min(N,C)，
这里，N是高层参数配置的一个TB中的最大CBG个数，C是一个TB中的CB个数。
令M 1＝mod(C,M)，
Figure PCTCN2020074028-appb-000001
如果M 1＝0，则每个CBG包含
Figure PCTCN2020074028-appb-000002
个CB；如果M 1＞0，则前M 1个CBG包含K 1个CB，后M-M 1个CBG包含K 2个CB。
调度PDSCH的DCI中可能存在码块组传输信息(CBG transmission information，CBGTI)和CBGFI两个域(field)。
CBGTI域包含N TB·N个bit，这里N TB是高层参数配置的TB个数。如果N TB＝2，则2N个bit的前N个bit对应第一个TB，后N个bit对应第2个TB.N个bit的前M个bit对应这个TB的M个CBG。
在网络设备进行PDSCH初传时，UE可以假设TB中所有的CBG存在。在网络设备进行PDSCH重传的时候，UE可以假设：
CBGTI域指示此次重传存在的CBG，其中，以CBGTI域中的一个用于指示CBG的bit为例，若该bit指示0，表示该bit对应的CBG不存在传输，若该bit指示1，表示该bit对应的CBG存在传输。
如果存在CBGFI域，在目前的协议中，CBGFI域指示0，表示此次传输的这些CBG的上一次传输的接收可能被影响，CBGFI域指示1，表示此次传输的这些CBG可以和上一次传输的相应CBG进行合并，即可以进行对数似然比(log-likelihood ratio，LLR)合并。不排除后面的协议进行修改，例如一个CBG对应一个CBGFI指示。重传时的CBG包含和初传时相同的CB。
4、NR中的传输块编码过程：
如图6所示，以下以传输块1和传输块2的编码过程为例进行说明。具体的，首先将由于TB和循环冗余校验(cyclic redundancy check，CRC)构成的信息比特序列进行码块分割，得到若干个由码块和CRC构成的信息比特序列，如图6所示将由传输块1和CRC构成的信息比特序列分割为若干个由码块和CRC构成的信息比特序列。进一步地，将每个由码块和CRC构成的信息比特序列分别进行信道编码，这里的编码码率也称为母码码率。在NR中，母码码率为1/3或1/5。如图7所示，假设母码码率为1/3，码块的比特数加CRC的比特数的总和为N bit，则经信道编码后为3N bit。接着，将信道编码后的信息比特序列进行速率匹配，速率匹配的方式可能是重复或截短等方式，速率匹配的目的是使待发送数据适配于空口资源。如图8所示，由于不同次传输所占用的时频资源可能不同，因此可以根据不同次传输所占用的时频资源，采用不同方式从信道编码后的信息比特序列中选择需要传输的比特，得到不同的冗余版本。因此不同次传输可能传输不同的冗余版本，每个冗余版本的比特数也可能不同。最后，将经过速率匹配后的比特进行交织，并对交织后的比特进行码块级联，得到编码后的传输块。
例如，若在初传时速率匹配的方式为截短，如图8所示的截短情况下的冗余版本0，该冗余版本0的比特数小于3N bit，则UE在译码时用小于3N个LLR进行译码，其中，每个bit对应一个LLR，如果译码错误，则将小于3N个LLR存储到对应位置；若在初传时速率匹配的方式为重复，如图8所示的重复情况下的冗余版本0，该冗余版本0的比特数大于3N bit，则UE在译码之前，会将重复的LLR合并(如图8中2段虚线部分对应的LLR合并)，用3N个LLR进行译码，如果译码错误，则将3N个LLR存储到对应位置。进一步地，若在重传时速率匹配的方式是截短，如图8所示的截短情况下的冗余版本1，则UE在译码时将小于3N个LLR和已存储的LLR对应合并，然后译码。若重传时速率匹配的方式是重复，则UE将此次传输的重复的LLR合并，然后再和已存储的LLR对应合并，然后译码。
5、数据对应的译码信息：
本申请中数据对应的译码信息可以是数据对应的软值(例如，LLR)或者硬值(hard value)。示例性地，1比特对应的LLR是通过软判决得到的该比特的取值为1的概率与该比特取值为0的概率的比值，1比特对应的硬值是通过硬判决(hard decision)得到的该比特的取值为0或1。进一步地，将两次传输的数据分别对应的译码信息进行合并是指对这两个译码信息进行求和。确定某一次传输的数据参与合并是指该次传输的数据对应的译码信息可以与之前已保存的译码信息或之前已保存的译码信息的合并结果进行合并，即求和。
现有技术中，以仅有CBGFI的场景为例，如果初传为正常传输，终端设备针对初传的传输块译码失败，终端设备保存初传的传输块对应的LLR。当第1次重传时受到了URLLC业务的数据传输的影响没有正常传输，调度第1次重传的DCI仅会指示初传的传输块对应的LLR参与合并，终端设备基于初传的传输块对应的LLR和第1次重传的传输块对应的LLR进行译码，若译码失败，则终端设备保存初传的传输块对应的LLR与第1次重传的传输块对应的LLR之和。在第2次重传时，若调度第2次重传的DCI指示第1次重传的传输块对应的LLR不参与合并，则终端设备会把初传的传输块对应的LLR与第1次重传的传输块对应的LLR之和丢弃，而仅使用第2次重传的传输块对应的LLR进行译码。可知，当第2次重传为正常传输时，由于终端设备仅基于第2次重传的传输块对应的LLR进 行译码，此时仍约有10％的概率出现第3次重传。
由上可知，在网络设备向终端设备多次传输数据的过程中，若依次执行正常传输，不正常传输，正常传输，则采用上述译码方法丢失了不正常传输之前的正常传输的译码信息，将会造成PDSCH接收性能下降，重传概率提高。
应理解的是，上述正常传输是指在网络设备采用用于传输eMBB业务数据的时频资源向终端设备传输eMBB业务数据，上述非正常传输是指，由于URLLC业务具有突发性，为了提高系统资源利用率，网络设备通常不会为URLLC业务数据传输预留资源，因此，网络设备采用用于传输eMBB业务数据的时频资源中的部分或全部的时频资源向终端设备传输URLLC业务数据，不传输eMBB业务数据。
应理解的是，本申请提供的译码方法可以应用但不限于上述网络设备向终端设备多次传输数据的过程中依次执行正常传输，不正常传输，正常传输的场景，还可应用于其他网络设备向终端设备多次传输数据的场景，例如，网络设备向终端设备多次传输数据的过程中依次执行不正常传输，不正常传输，正常传输的场景，又例如，网络设备向终端设备多次传输数据的过程中依次执行不正常传输，正常传输，正常传输的场景，又例如，网络设备向终端设备多次传输数据的过程中依次执行正常传输，正常传输，正常传输的场景。此外，网络设备向终端设备传输数据的次数可以大于等于3。
基于以上内容，本申请提供一种译码方法，用以降低eMBB业务数据的重传概率。应理解，该译码方法可以由终端设备执行，也可以由设置于终端设备内的无线通信装置执行，其中，无线通信装置可以是基带处理器，也可以是系统芯片(system on chip，SoC)。下面以终端设备为例，进行介绍。如图9所示，该方法包括：
步骤901：终端设备接收来自于网络设备的第k次重传的数据，k为大于等于2的正整数。
步骤902：终端设备接收来自于网络设备的指示信息。
应理解的是，终端设备接收指示信息可以在终端设备接收来自于网络设备的第k次重传的数据之前，也可以在终端设备接收来自于网络设备的第k次重传的数据之后。因此，步骤901和步骤902的次序并不限定这两个步骤的具体时序。
步骤903：终端设备根据指示信息判断接收的来自于网络设备的第k-1次重传的数据是否参与合并，若是则执行步骤904b或步骤904c，否则执行步骤904a。
在一示例中，若指示信息包括CBGFI，终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，则执行步骤904c，终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并，则执行步骤904a。
在另一示例中，若指示信息包括PI，终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，则执行步骤904b，终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并，则执行步骤904a。
步骤904a：根据指示信息确定第k-1次重传的数据不参与合并，终端设备基于第一合并结果和第k次重传的数据进行译码。
步骤904b：根据指示信息确定第k-1次重传的数据参与合并，终端设备基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码。
其中，接收的来自于网络设备的初传数据至接收的来自于网络设备的第k-2次重传的数据中存在至少一个参与合并的数据，第一合并结果是基于至少一个参与合并的数据分别 对应的译码信息确定的。
若初传数据至第k-2次重传的数据中仅存在一个参与合并的数据，则第一合并结果为上述一个参与合并的数据对应的译码信息。若初传数据至第k-2次重传的数据中存在多个参与合并的数据，则第一合并结果为上述多个参与合并的数据分别对应的译码信息进行合并的合并结果。应理解的是，当k＝2时，第k-2次重传的数据即为初传数据。
步骤904c：根据指示信息确定第k-1次重传的数据参与合并，终端设备基于第二合并结果和第k次重传的数据进行译码。
其中，第二合并结果为第一合并结果和第k-1次重传的数据对应的译码信息进行合并的合并结果。
应理解的是，指示信息可以直接指示第k-1次重传的数据是否参与合并，也可以间接指示第k-1次重传的数据是否参与合并，本申请对此不作限定。
下面举例说明指示信息间接指示第k-1次重传的数据是否参与合并的两种可能的设计。
第一种可能的设计：指示信息包括CBGFI，CBGFI由DCI承载。
在CBGFI指示第k-1次重传的数据的接收可能被影响时，终端设备确定第k-1次重传的数据不参与合并，或，在CBGFI指示第k-1次重传的数据的接收可能未被影响时，终端设备确定第k-1次重传的数据参与合并。
示例性地，在CBGFI的取值为0时，CBGFI指示第k-1次重传的数据的接收可能被影响，终端设备确定第k-1次重传的数据不参与合并。或，在CBGFI的取值为1时，CBGFI指示第k-1次重传的数据的接收可能未被影响，终端设备确定第k-1次重传的数据参与合并。应理解的是，CBGFI的取值与CBGFI所指示的内容的对应关系是由通信协议规定的，随着通信协议的更新，CBGFI的取值与CBGFI所指示的内容的对应关系可能发生变化，或者CBGFI占用的比特数可能会增加，本申请对此不作限定。
其中，第k-1次重传的数据为第k-1次重传的一个或多个CB，或一个或多个CBG。
示例性地，假设网络设备基于高层信令配置UE进行基于CBG的PDSCH传输，若调度PDSCH的DCI中的CBGFI域指示本次传输的若干个CBG的上一次传输的接收可能被影响(假设这里的上一次传输为第k-1次重传)，则UE确定第k-1次重传的若干个CBG不参与合并。调度PDSCH的DCI中的CBGFI域也可以指示本次传输的若干个CBG的上一次传输可以参与合并。
应理解的是，由于每个CB对应一个CRC，如果一个CBG包含2个CB，终端设备只能针对CBG进行反馈，因此，当一个CBG中的一个CB译码成功，一个CB译码失败时，网络设备会对这两个CB进行重传，而终端设备可以只存储译码失败的CB对应的译码信息，并在接收到网络设备重传的两个CB时，仅针对上一次译码失败的CB在重传的两个CB中所对应的CB和存储的上一次译码失败的CB对应的译码信息进行译码。当然，终端设备也可以存储2个CB对应的译码信息，并在接收到网络设备重传的两个CB时，对2个CB都进行译码。
第二种可能的设计：指示信息包括PI；PI由DCI承载。
在PI指示用于传输第k-1次重传的数据的时频资源被抢占时，终端设备确定第k-1次重传的数据不参与合并；或在PI指示用于传输第k-1次重传的数据的时频资源未被抢占，终端设备确定第k-1次重传的数据参与合并。
示例性地，在PI中用于传输第k-1次重传的数据的时频资源所对应的比特的取值为1 时，该比特指示用于传输第k-1次重传的数据的时频资源被抢占，终端设备确定第k-1次重传的数据不参与合并；或在PI中用于传输第k-1次重传的数据的时频资源所对应的比特的取值为0时，该比特指示用于传输第k-1次重传的数据的时频资源未被抢占，终端设备确定第k-1次重传的数据参与合并。
应理解的是，PI中每个比特的取值与该比特所指示的内容的对应关系是由通信协议规定的，随着通信协议的更新，PI中每个比特的取值与该比特所指示的内容的对应关系可能发生变化，或者PI包括的比特数可能发生变化，本申请对此不作限定。
其中，第k-1次重传的数据为第k-1次在PI指示的一个时频资源上重传的数据。
具体的，一个时频资源可以包括一个符号组和一个PRB子集，示例性地，一个时频资源被划分为14份时频子资源，通过PI包括的14bit的bitmap，可以指示每份时频子资源是否被抢占。
示例性地，假设一个时频资源从时间上被分为7份，频率上被等分成2份，即共14份时频资源，如图5所示，14bit的PI中的每个bit可以指示一个时频资源上是否被抢占，若该时频资源被抢占，则在该时频资源上传输的数据不参与合并，若该时频资源未被抢占，则在该时频资源上传输的数据参与合并。
此外，应理解的是，上述两种指示信息为仅为举例，指示信息还可以由媒体访问控制控制单元(medium access control control element，MAC CE)承载，通过上述MAC CE承载上述指示信息，可以降低时延，但开销可能会大一些。当指示信息由MAC CE承载时，指示信息可以直接指示第k-1次重传的数据是否参与合并，也可以间接指示第k-1次重传的数据是否参与合并，本申请对此不作限定。
另外，指示信息还可以由无线资源控制(radio resource control，RRC)信令承载。通过RRC信令承载上述指示信息，可以降低开销，但时延较指示信息由MAC CE承载而言，时延可能更大一些。当指示信息由RRC承载时，指示信息可以直接指示第k-1次重传的数据是否参与合并，也可以间接指示第k-1次重传的数据是否参与合并，本申请对此不作限定。
进一步地，当UE译码失败时，终端设备可以采用但不限于以下设计在译码失败后保存所需保存的译码信息。
方案1：
终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，则基于第二合并结果和第k次重传的数据进行译码，终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并，则基于第一合并结果和第k次重传的数据进行译码。由此可知，终端设备可以保存第一合并结果和第二合并结果，并在根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并时，基于第二合并结果和第k次重传的数据进行译码，在根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并时，基于第一合并结果和第k次重传的数据进行译码。
终端设备确定基于第一合并结果和第k次重传的数据进行译码并译码失败，则存储第一合并结果和第五合并结果，第五合并结果为第一合并结果与第k次重传的数据对应的译码信息进行合并的合并结果。此时，终端设备保存第一合并结果和第五合并结果，进一步地，终端设备接收来自于网络设备的第k+1次重传的数据，在根据指示信息确定接收的来 自于网络设备的第k次重传的数据参与合并时，基于第五合并结果和第k+1次重传的数据进行译码，在根据指示信息确定接收的来自于网络设备的第k次重传的数据不参与合并时，基于第一合并结果和第k+1次重传的数据进行译码。
其中，第一合并结果和第五合并结果可以存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。采用上述设计，网络设备可以不必为终端设备配置新的存储单元，通过利用冗余的存储单元保存所需保存的译码信息，因此可以提高资源利用率。
终端设备确定基于第二合并结果和第k次重传的数据进行译码并译码失败，则存储第二合并结果和第四合并结果，第四合并结果为第二合并结果与第k次重传的数据对应的译码信息进行合并的合并结果。此时，终端设备保存第二合并结果和第四合并结果，进一步地，终端设备接收来自于网络设备的第k+1次重传的数据，在根据指示信息确定接收的来自于网络设备的第k次重传的数据参与合并时，基于第四合并结果和第k+1次重传的数据进行译码，在根据指示信息确定接收的来自于网络设备的第k次重传的数据不参与合并时，基于第二合并结果和第k+1次重传的数据进行译码。
同理，第二合并结果和第四合并结果存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
基于上述方案1，下面针对初传数据和第1次重传的数据补充如下说明：
终端设备接收来自于网络设备的初传数据，确定初传数据译码失败，则存储初传数据对应的译码信息。终端设备向网络设备发送针对初传数据的译码失败消息，终端设备接收来自于网络设备的第1次重传的数据，终端设备确定初传数据参与合并，则基于初传数据对应的译码信息与第1次重传的数据进行译码，终端设备确定译码失败，则存储初传数据对应的译码信息，以及初传数据对应的译码信息与第1次重传的数据对应的译码信息进行合并的合并结果。
同理，初传数据对应的译码信息，以及初传数据对应的译码信息与第1次重传的数据对应的译码信息进行合并的合并结果存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
方案2：
终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，则基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码，终端设备根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并，则基于第一合并结果和第k次重传的数据进行译码。由此可知，终端设备可以保存第一合并结果和第k-1次重传的数据对应的译码信息，并在根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并时，基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码，在根据指示信息确定接收的来自于网络设备的第k-1次重传的数据不参与合并时，基于第一合并结果和第k次重传的数据进行译码。
终端设备确定基于第一合并结果和第k次重传的数据进行译码并译码失败，则存储第一合并结果和第k次重传的数据对应的译码信息。此时，终端设备保存第一合并结果和第 k次重传的数据对应的译码信息，进一步地，终端设备接收来自于网络设备的第k+1次重传的数据，在根据指示信息确定接收的来自于网络设备的第k次重传的数据参与合并时，基于第一合并结果、第k次重传的数据对应的译码信息和第k+1次重传的数据进行译码，在根据指示信息确定接收的来自于网络设备的第k次重传的数据不参与合并时，基于第一合并结果和第k+1次重传的数据进行译码。
其中，第一合并结果和第k次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
终端设备确定基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码并译码失败，则存储第三合并结果和第k次重传的数据对应的译码信息，第三合并结果为第一合并结果与第k-1次重传的数据对应的译码信息进行合并的合并结果。此时，终端设备保存第三合并结果和第k次重传的数据对应的译码信息，进一步地，终端设备接收来自于网络设备的第k+1次重传的数据，在根据指示信息确定接收的来自于网络设备的第k次重传的数据参与合并时，基于第三合并结果、第k次重传的数据对应的译码信息和第k+1次重传的数据进行译码，在根据指示信息确定接收的来自于网络设备的第k次重传的数据不参与合并时，基于第三合并结果和第k+1次重传的数据进行译码。
其中，第三合并结果和第k次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
基于上述方案2，下面针对初传数据和第1次重传的数据译补充如下说明：
终端设备接收来自于网络设备的初传数据，确定初传数据译码失败，则存储初传数据对应的译码信息。终端设备向网络设备发送针对初传数据的译码失败消息，终端设备接收来自于网络设备的第1次重传的数据，终端设备确定初传数据参与合并，则基于初传数据对应的译码信息与第1次重传的数据进行译码，终端设备确定译码失败，则存储初传数据对应的译码信息，以及第1次重传的数据对应的译码信息。
其中，初传数据对应的译码信息，以及第1次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，第一存储单元为针对初传数据至第k次重传的数据调度的进程分配的存储单元，第二存储单元为针对任一未调度的进程分配的存储单元。
应理解的是，上述第一存储单元和第二存储单元是分别针对不同进程分配的存储单元，示例性地，第一存储单元和第二存储单元可以为缓存(buffer)。
第一存储单元和第二存储单元可以是位于终端设备内存储单元，或者为与终端设备耦合的存储单元。具体的，第一存储单元和第二存储单元可以占用非易失性存储器中的部分存储空间，或者还可以占用易失性存储器(volatile memory)中的部分存储空间。其中，非易失性存储器可以包括但不限于硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，易失性存储器可以包括但不限于随机存取存储器(random-access memory，RAM)或静态随机存取存储器(Static Random-Access Memory，SRAM)等。
下面结合具体示例对如图9所示的实施例进行详细说明。
示例1：如图10所示，针对仅有CBGFI的场景说明本申请提供的译码方法。其中，一个PDSCH包含2个TB，每个TB可能包含一个或多个CB，每个TB中包含的CB可以 分为若干CBG。gNB通过高层信令配置UE进行基于CBG的PDSCH传输。一个CBG可以对应于一个ACK或NACK。
S1001：gNB发送某个进程的初传PDSCH对应的DCI和初传PDSCH。相应的，UE接收该进程的初传PDSCH对应的DCI和初传PDSCH。
示例性地，这里的DCI可以包括混合自动重传请求(hybrid automatic repeat request，HARQ)进程号，初传PDSCH的时频资源信息等。
S1002：UE针对初传PDSCH求取初传PDSCH对应的LLR，UE基于初传PDSCH对应的LLR对初传PDSCH译码，其中，若干个CB译码失败，将其中一个译码失败CB的LLR，记为LLR1，这个CB记为第一CB。
LLR1可以存储于第一存储单元，第一存储单元为针对当前调度的进程分配的存储单元。
S1003：针对第一CB所在的CBG，UE向gNB发送NACK。相应的，gNB接收来自于UE的NACK。
S1004：gNB发送第1次重传PDSCH对应的DCI和第1次重传的PDSCH。相应的，UE接收第1次重传PDSCH对应的DCI和第1次重传的PDSCH。
其中，第1次重传PDSCH对应的DCI包括CBGTI和CBGFI，CBGTI指示此次重传包括若干个CBG，CBGFI包括1个比特，CBGFI指示此次重传的若干个CBG在初传时是否被影响。这里假设初传PDSCH为正常传输，则CBGFI指示此次重传的若干个CBG的初传可以参与合并，则LLR1参与合并。
或者，第1次重传PDSCH对应的DCI包括CBGTI和CBGFI，CBGTI指示此次重传包括若干个CBG，CBGFI包括若干个比特，分别指示此次重传的每个CB或者CBG在初传时是否被影响。这里假设初传PDSCH为正常传输，UE根据CBGFI确定此次重传的若干个CB或者CBG在初传时未被影响，则LLR1参与合并。
S1005：UE针对第1次重传的PDSCH求取第1次重传的PDSCH中第一CB对应的LLR，记为LLR2，采用LLR1+LLR2译码第一CB，UE译码失败，存储LLR1与LLR1+LLR2。
以存储LLR1与LLR1+LLR2为例，LLR1与LLR1+LLR2可以存储于第一存储单元，还可以存储于第一存储单元和第二存储单元，第二存储单元为针对未调度的进程分配的存储单元。例如把LLR1与LLR1+LLR2都存储于第一存储单元，或者把LLR1存储于第一存储单元，把LLR1+LLR2存储于第二存储单元，或者把LLR1存储于第二存储单元，把LLR1+LLR2存储于第一存储单元，或者根据传输单元大小、LLR1的大小和LLR1+LLR2的大小中的一个或多个值，确定把LLR1与LLR1+LLR2都存储于第一存储单元，还是分别存储于第一存储单元和第二存储单元。应理解的是，上述方案仅为举例，本申请不限定UE所需存储的LLR占用存储单元的具体方案。
S1006：针对第一CB所在的CBG，UE向gNB发送NACK。相应的，gNB接收来自于UE的NACK。
S1007：gNB发送第2次重传PDSCH对应的DCI和第2次重传的PDSCH。相应的，UE接收第2次重传PDSCH对应的DCI和第2次重传的PDSCH。
其中，第2次重传PDSCH对应的DCI包括CBGTI和CBGFI，CBGTI指示此次重传包括若干个CBG，CBGFI包括1个比特，CBGFI指示此次重传的若干个CBG在第1次重传时是否被影响。这里假设第1次PDSCH重传为非正常传输，CBGFI指示此次重传的若 干个CBG在第1次重传的PDSCH时可能被影响，则LLR2不参与合并。
或者，第2次重传PDSCH对应的DCI包括CBGTI和CBGFI，CBGTI指示此次重传包括若干个CBG，CBGFI包括若干个比特，分别指示此次重传的每个CB或者CBG在第1次重传时是否被影响。这里假设第1次PDSCH重传为非正常传输，第一CB对应的CBGFI指示此次重传的第一CB在第1次重传时可能被影响，或者第一CB所在CBG对应的CBGFI指示此次重传的第一CB所在CBG在第1次重传时可能被影响，则LLR2不参与合并。
S1008：UE针对第2次重传的PDSCH求取第2次重传的PDSCH中第一CB对应的LLR，记为LLR3，采用LLR1+LLR3译码第一CB，UE译码失败，存储LLR1与LLR1+LLR3。
UE根据CBGFI确定LLR2不参与合并，则UE从存储的LLR1与LLR1+LLR2选择LLR1与LLR3合并并译码。
其中，以存储LLR1与LLR1+LLR3为例，LLR1与LLR1+LLR3可以存储于第一存储单元，还可以存储于第一存储单元和第二存储单元。例如把LLR1与LLR1+LLR3都存储于第一存储单元，或者把LLR1存储于第一存储单元，把LLR1+LLR3存储于第二存储单元，或者把LLR1存储于第二存储单元，把LLR1+LLR3存储于第一存储单元，或者根据传输单元大小、LLR1的大小和LLR1+LLR3的大小中的一个或多个值，确定把LLR1与LLR1+LLR3都存储于第一存储单元，还是分别存储于第一存储单元和第二存储单元。应理解的是，上述方案仅为举例，本申请不限定UE所需存储的LLR占用存储单元的具体方案。
因此，采用示例1提供的方法，能够实现使用不正常传输之前的正常传输的数据参与合并，实现使用之前多次传输中参与合并的数据对应的译码信息进行译码，进而能够提高PDSCH接收性能，降低重传概率。此外，在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的LLR，可以实现提高资源利用率。
示例2：如图11示，针对仅有PI的场景说明本申请提供的译码方法。
S1101：gNB发送某个进程的初传PDSCH对应的DCI和初传PDSCH。相应的，UE接收该进程的初传PDSCH对应的DCI和初传PDSCH。
示例性地，这里的DCI可以包括HARQ进程号，初传PDSCH的时频资源信息等。
S1102：UE针对初传PDSCH求取初传PDSCH对应的LLR，UE基于初传PDSCH对应的LLR对初传PDSCH译码，其中，若干个CB译码失败将其中一个译码失败CB的LLR，记为LLR1，这个CB记为第一CB。
LLR1可以存储于第一存储单元，第一存储单元为针对当前调度的进程分配的存储单元。
S1103：针对第一CB所在的CBG，UE向gNB发送NACK。相应的，gNB接收来自于UE的NACK。
S1104：gNB发送DCI，该DCI包括PI，该PI中指示初传PDSCH中传输第一CB的部分时频资源被抢占，传输第一CB的部分时频资源未被抢占，则在未被抢占的时频资源上传输的数据对应的LLR(记为LLR11)参与合并。相应的，UE接收来自于gNB的PI。
其中，LLR1包括初传PDSCH中第一CB中在未被抢占时频资源上传输的数据对应的LLR(即LLR11)和初传PDSCH中第一CB中在被抢占时频资源上传输的数据对应的LLR。
S1105：gNB发送第1次重传PDSCH对应的DCI和第1次重传的PDSCH。相应的， UE接收第1次重传PDSCH对应的DCI和第1次重传的PDSCH。
应理解的是，gNB发送DCI(该DCI包括PI)可以在gNB接收来自于UE的NACK之前，或在gNB接收来自于UE的NACK之后，或在gNB发送第1次重传PDSCH对应的DCI和第1次重传PDSCH之前，或在gNB发送第1次重传PDSCH对应的DCI和第1次重传PDSCH之后，本申请对此不作限定。
UE接收DCI(该DCI包括PI)可以在UE接收第1次重传PDSCH对应的DCI和第1次重传的PDSCH之前，或在UE接收第1次重传PDSCH对应的DCI和第1次重传的PDSCH之后。
S1106：UE针对第1次重传的PDSCH求取第1次重传的PDSCH中第一CB对应的LLR，记为LLR2，采用LLR11+LLR2译码第一CB，UE译码失败，UE保存LLR11和LLR2。
LLR11和LLR2可以存储于第一存储单元，还可存储于第一存储单元和第二存储单元，第二存储单元为针对未调度的进程分配的存储单元。例如，把LLR11和LLR2都存储于第一存储单元，或者把LLR11存储于第一存储单元，把LLR2存储于第二存储单元，或者把LLR11存储于第二存储单元，把LLR2存储于第一存储单元，或者根据传输单元大小、LLR1大小和LLR2大小中的一个或多个值，确定把LLR11和LLR2都存储于第一存储单元，还是分别存储于第一存储单元和第二存储单元。应理解的是，上述方案仅为举例，本申请不限定UE所需存储的LLR占用存储单元的具体方案。
S1107：针对第一CB所在的CBG，UE向gNB发送NACK。相应的，gNB接收来自于UE的NACK。
S1108：gNB发送DCI，该DCI包括PI，该PI中指示第1次重传PDSCH中传输第一CB的部分时频资源被抢占，传输第一CB的部分时频资源未被抢占，则在未被抢占的时频资源上传输的数据对应的LLR(记为LLR22)参与合并。相应的，UE接收来自于gNB的PI。
其中，LLR2包括第1次重传PDSCH中第一CB中在未被抢占时频资源上传输的数据对应的LLR(即LLR22)和第1次重传PDSCH中第一CB中在被抢占时频资源上传输的数据对应的LLR。
S1109：gNB发送第2次重传PDSCH对应的DCI和第2次重传的PDSCH。相应的，UE接收第2次重传PDSCH对应的DCI和第2次重传的PDSCH。
S1110：UE针对第2次重传的PDSCH求取第2次重传的PDSCH对应的LLR，记为LLR3，采用LLR11+LLR22+LLR3译码第一CB，UE译码失败，UE保存LLR11+LLR22和LLR3。
LLR11+LLR22和LLR3可以存储于第一存储单元，还可存储于第一存储单元和第二存储单元。例如把LLR11+LLR22和LLR3都存储于第一存储单元，或者把LLR11+LLR22存储于第一存储单元，把LLR3存储于第二存储单元，或者把LLR11+LLR22存储于第二存储单元，把LLR3存储于第一存储单元，或者根据传输单元大小、LLR11+LLR22大小和LLR3大小中的一个或多个值，确定把LLR11+LLR22和LLR3都存储于第一存储单元，还是分别存储于第一存储单元和第二存储单元。应理解的是，上述方案仅为举例，本申请不限定UE所需存储的LLR占用存储单元的具体方案。
如果一个码块的母码码率是1/3，那么UE存储了3N个LLR。如图12所示，初传是 冗余版本0，第一次重传是冗余版本1.白色代表PI指示没被抢占资源的数据，黑色代表PI指示被抢占资源的数据。
该码块初传译码失败后，UE存储初传时的部分1、部分2、部分3、部分4分别对应的LLR(记为LLR1)。
第1次重传时，UE根据PI获知部分1对应的时频资源被抢占，部分2、部分3、部分4分别对应的时频资源未被到抢占，则将部分2、部分3、部分4分别对应的LLR(记为LLR11)和部分5、部分6、部分7分别对应的LLR(记为LLR2)相应合并并译码，在译码失败后，存储2份LLR：
第一份：LLR11；
第二份：LLR2。
第2次重传时，UE根据PI获知部分6对应的时频资源被抢占，部分5、部分7对应的时频资源被未被抢占，则将第一份LLR11、和第二份LLR2中的部分5、部分7分别对应的LLR(记为LLR22)和部分8、部分9分别对应LLR(记为LLR3)相应合并并译码，在译码失败后，存储2份LLR。
第一份：LLR11和LLR22进行合并的LLR(记为LLR11+LLR22)；
第二份：LLR3。
因此，采用示例1提供的方法，能够实现使用不正常传输之前的正常传输的数据参与合并，实现使用之前多次传输中参与合并的数据对应的译码信息进行译码，进而能够提高PDSCH接收性能，降低重传概率。此外，在不增加存储空间的情况下，利用未调度进程的存储空间存储需要存储的LLR，可以实现提高资源利用率。
本申请提供的译码方法的有益效果可以通过构建仿真测试场景得到证明。下面以场景1、场景2和场景3为例进行说明。
场景1：
初传传输目标数据，无干扰数据，但目标数据译码失败。
CBGFI和PI指示初传为正常传输。
第1次重传传输干扰数据，无目标数据，译码失败。
CBGFI和PI指示第1次重传为非正常传输。
第2次重传传输目标数据，无干扰数据。
场景2：
初传传输目标数据，无干扰数据，但目标数据译码失败。
第1次重传传输目标数据，无干扰数据。
针对上述场景1和场景2，若场景1和场景2的性能相当，例如，场景1中第2次重传译码成功的概率与场景2中第1次重传译码成功的概率相当，则表明场景1采用了本申请实施例提供的译码方法；若场景1的性能较差，例如，场景1中第2次重传译码成功的概率低于场景2中第1次重传译码成功的概率，则表明场景1未采用本申请实施例提供的译码方法。
进一步地，在除传输目标数据对应的进程外的其他进程全部被调度时，调度最大传输块大小(transport block size，TBS)，场景1的性能比场景2的性能差，调度较小TBS，场景1的性能和场景2的性能相当，则表明UE用了被调度进程的剩余存储空间存储所需存 储的译码信息。
进一步地，在除传输目标数据对应的进程外的其他进程全部被调度时，场景1的性能比场景的性能2差，而在除传输目标数据对应的进程外还存在其他进程未被调度时，场景1的性能和场景2的性能相当，则表明在场景1中UE用了其他未被调度进程的存储空间存储所需存储的译码信息。
综上，通过仿真结果得知，采用本申请实施例提供的方法，能够有效降低重传概率。
上述本申请提供的实施例中，为了实现上述功能，终端设备包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
与上述构思相同，如图13所示，本申请实施例还提供一种装置1300，该装置1300包括收发单元1302和处理单元1301。
一示例中，装置1300用于实现上述方法中终端设备的功能。该装置可以是终端设备，也可以是终端设备中的装置，例如芯片系统。
收发单元1302，用于接收来自于网络设备的第k次重传的数据，k为大于等于2的正整数；
收发单元1302，还用于接收来自于网络设备的指示信息；
处理单元1301，用于根据指示信息确定接收的来自于网络设备的第k-1次重传的数据参与合并，基于第一合并结果、第k-1次重传的数据对应的译码信息和第k次重传的数据进行译码；
其中，接收的来自于网络设备的初传数据至接收的来自于网络设备的第k-2次重传的数据中存在至少一个参与合并的数据，第一合并结果是基于至少一个参与合并的数据分别对应的译码信息确定的。
关于处理单元1301、收发单元1302的具体执行过程，可参见上方法实施例中的记载。本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
作为另一种可选的变形，该装置可以为芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。示例性地，该装置包括处理器和接口电路，接口电路，用于接收代码指令并传输至所述处理器；处理器运行所述代码指令以执行上述各个实施例的方法。其中，处理器完成上述处理单元1301的功能，接口电路完成上述收发单元1302的功能。
与上述构思相同，如图14所示，本申请实施例还提供一种装置1400。该装置1400中包括：通信接口1401、至少一个处理器1402、至少一个存储器1403。通信接口1401，用于通过传输介质和其它设备进行通信，从而用于装置1400中的装置可以和其它设备进行通信。存储器1403，用于存储计算机程序。处理器1402调用存储器1403存储的计算机程序，通过通信接口1401收发数据实现上述实施例中的方法。
示例性地，当该装置为终端设备时，存储器1403用于存储计算机程序；处理器1402调用存储器1403存储的计算机程序，通过通信接口1401执行上述实施例中终端设备执行的方法。
在本申请实施例中，通信接口1401可以是收发器、电路、总线、模块或其它类型的通信接口。处理器1402可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。存储器1403可以是非易失性存储器，比如硬盘或固态硬盘等，还可以是易失性存储器，例如随机存取存储器。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置。存储器1403和处理器1402耦合。本申请实施例中的耦合是装置、单元或模块之间的间隔耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。作为另一种实现，存储器1403还可以位于装置1400之外。处理器1402可以和存储器1403协同操作。处理器1402可以执行存储器1403中存储的程序指令。所述至少一个存储器1403中的至少一个也可以包括于处理器1402中。本申请实施例中不限定上述通信接口1401、处理器1402以及存储器1403之间的连接介质。例如，本申请实施例在图14中以存储器1403、处理器1402以及通信接口1401之间可以通过总线连接，所述总线可以分为地址总线、数据总线、控制总线等。
可以理解的，上述图13所示实施例中的装置可以以图14所示的装置1400实现。具体的，处理单元1301可以由处理器1402实现，收发单元1302可以由通信接口1401实现。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序在计算机上运行时，使得计算机执行上述各个实施例所示的方法。
本申请实施例提供的方法中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质(例如,固态硬盘)等。
以上所述，以上实施例仅用以对本申请的技术方案进行了详细介绍，但以上实施例的说明只是用于帮助理解本申请实施例的方法，不应理解为对本申请实施例的限制。本技术领域的技术人员可以想到的变化或替换，都应涵盖在本申请实施例的保护范围之内。

Claims (30)

  1. 一种译码方法，其特征在于，该方法包括：
    接收来自于网络设备的第k次重传的数据，k为大于等于2的正整数；
    接收来自于所述网络设备的指示信息；
    根据所述指示信息确定接收的来自于所述网络设备的第k-1次重传的数据参与合并，基于所述第一合并结果、所述第k-1次重传的数据对应的译码信息和所述第k次重传的数据进行译码；
    其中，接收的来自于所述网络设备的初传数据至接收的来自于所述网络设备的第k-2次重传的数据中存在至少一个参与合并的数据，所述第一合并结果是基于所述至少一个参与合并的数据分别对应的译码信息确定的。
  2. 如权利要求1所述的方法，其特征在于，所述根据所述指示信息确定接收的来自于所述网络设备的第k-1次重传的数据参与合并，基于所述第一合并结果、所述第k-1次重传的数据对应的译码信息和所述第k次重传的数据进行译码，包括：
    根据所述指示信息确定所述第k-1次重传的数据参与合并，基于第二合并结果和所述第k次重传的数据进行译码，其中，所述第二合并结果为所述第一合并结果和所述第k-1次重传的数据对应的译码信息进行合并的合并结果。
  3. 如权利要求1或2所述的方法，其特征在于，所述指示信息包括码块组擦除信息CBGFI；
    所述根据所述指示信息确定接收的来自于所述网络设备的第k-1次重传的数据参与合并，包括：
    在所述CBGFI用于指示所述第k-1次重传的数据的接收可能未被影响时，则确定所述第k-1次重传的数据参与合并；
    其中，所述第k-1次重传的数据为第k-1次重传的一个或多个编码块CB，或一个或多个编码块组CBG。
  4. 如权利要求1或2所述的方法，其特征在于，所述指示信息包括抢占指示PI；
    所述根据所述指示信息确定接收的来自于所述网络设备的第k-1次重传的数据参与合并，包括：
    在所述PI用于指示用于传输所述第k-1次重传的数据的时频资源未被抢占时，则确定所述第k-1次重传的数据参与合并；
    其中，所述第k-1次重传的数据为第k-1次在所述PI指示的一个时频资源上重传的数据。
  5. 如权利要求1-4所述的方法，其特征在于，还包括：
    在基于所述第一合并结果、所述第k-1次重传的数据对应的译码信息和所述第k次重传的数据进行译码并译码失败时，存储第三合并结果和所述第k次重传的数据对应的译码信息，所述第三合并结果为所述第一合并结果与所述第k-1次重传的数据对应的译码信息进行合并的合并结果。
  6. 如权利要求5所述的方法，其特征在于，所述第三合并结果和所述第k次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第 二存储单元为针对任一未调度的进程分配的存储单元。
  7. 如权利要求2-4任一项所述的方法，其特征在于，还包括：
    在基于所述第二合并结果和所述第k次重传的数据进行译码并译码失败时，存储第二合并结果和第四合并结果，所述第四合并结果为所述第二合并结果与所述第k次重传的数据对应的译码信息进行合并的合并结果。
  8. 如权利要求7所述的方法，其特征在于，所述第二合并结果和所述第四合并结果存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第二存储单元为针对任一未调度的进程分配的存储单元。
  9. 如权利要求1-8任一项所述的方法，其特征在于，还包括：
    接收来自于所述网络设备的所述初传数据；
    在所述初传数据译码失败时，存储所述初传数据对应的译码信息；
    接收来自于所述网络设备的第1次重传的数据；
    在所述初传数据参与合并，且基于所述初传数据对应的译码信息与所述第1次重传的数据进行译码并译码失败时，存储所述初传数据对应的译码信息，以及所述初传数据对应的译码信息与所述第1次重传的数据对应的译码信息进行合并的合并结果。
  10. 如权利要求9所述的方法，其特征在于，所述初传数据对应的译码信息，以及所述初传数据对应的译码信息与所述第1次重传的数据对应的译码信息进行合并的合并结果存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第二存储单元为针对任一未调度的进程分配的存储单元。
  11. 如权利要求1-8任一项所述的方法，其特征在于，还包括：
    接收来自于所述网络设备的所述初传数据；
    在所述初传数据译码失败时，存储所述初传数据对应的译码信息；
    接收来自于所述网络设备的第1次重传的数据；
    在所述初传数据参与合并，且基于所述初传数据对应的译码信息与所述第1次重传的数据进行译码并译码失败时，存储所述初传数据对应的译码信息，以及所述第1次重传的数据对应的译码信息。
  12. 如权利要求11所述的方法，其特征在于，所述初传数据对应的译码信息，以及所述第1次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第二存储单元为针对任一未调度的进程分配的存储单元。
  13. 如权利要求1-12任一项所述的方法，其特征在于，所述指示信息由媒体访问控制控制单元MAC-CE或无线资源控制RRC信令承载。
  14. 一种译码装置，其特征在于，该装置包括：
    收发单元，用于接收来自于网络设备的第k次重传的数据，k为大于等于2的正整数；
    所述收发单元，还用于接收来自于所述网络设备的指示信息；
    处理单元，用于根据所述指示信息确定接收的来自于所述网络设备的第k-1次重传的数据参与合并，基于所述第一合并结果、所述第k-1次重传的数据对应的译码信息和所述第k次重传的数据进行译码；
    其中，接收的来自于所述网络设备的初传数据至接收的来自于所述网络设备的第k-2次重传的数据中存在至少一个参与合并的数据，所述第一合并结果是基于所述至少一个参与合并的数据分别对应的译码信息确定的。
  15. 如权利要求14所述的装置，其特征在于，所述处理单元，用于根据所述指示信息确定所述第k-1次重传的数据参与合并，基于第二合并结果和所述第k次重传的数据进行译码，其中，所述第二合并结果为所述第一合并结果和所述第k-1次重传的数据对应的译码信息进行合并的合并结果。
  16. 如权利要求14或15所述的装置，其特征在于，所述指示信息包括CBGFI；
    所述处理单元，用于在所述CBGFI用于指示所述第k-1次重传的数据的接收可能未被影响时，则确定所述第k-1次重传的数据参与合并；
    其中，所述第k-1次重传的数据为第k-1次重传的一个或多个CB，或一个或多个CBG。
  17. 如权利要求14或15所述的装置，其特征在于，所述指示信息包括PI；
    所述处理单元，用于在所述PI用于指示用于传输所述第k-1次重传的数据的时频资源未被抢占时，则确定所述第k-1次重传的数据参与合并；
    其中，所述第k-1次重传的数据为第k-1次在所述PI指示的一个时频资源上重传的数据。
  18. 如权利要求14-17任一项所述的装置，其特征在于，所述处理单元，还用于在基于所述第一合并结果、所述第k-1次重传的数据对应的译码信息和所述第k次重传的数据进行译码并译码失败时，存储第三合并结果和所述第k次重传的数据对应的译码信息，所述第三合并结果为所述第一合并结果与所述第k-1次重传的数据对应的译码信息进行合并的合并结果。
  19. 如权利要求18所述的装置，其特征在于，所述第三合并结果和所述第k次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第二存储单元为针对任一未调度的进程分配的存储单元。
  20. 如权利要求15-17任一项所述的装置，其特征在于，所述处理单元，还用于在基于所述第二合并结果和所述第k次重传的数据进行译码并译码失败时，存储第二合并结果和第四合并结果，所述第四合并结果为所述第二合并结果与所述第k次重传的数据对应的译码信息进行合并的合并结果。
  21. 如权利要求20所述的装置，其特征在于，所述第二合并结果和所述第四合并结果存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第二存储单元为针对任一未调度的进程分配的存储单元。
  22. 如权利要求14-21任一项所述的装置，其特征在于，所述收发单元，还用于接收来自于所述网络设备的所述初传数据；
    所述处理单元，还用于在所述初传数据译码失败时，存储所述初传数据对应的译码信息；
    所述收发单元，还用于接收来自于所述网络设备的第1次重传的数据；
    所述处理单元，还用于在所述初传数据参与合并，且基于所述初传数据对应的译码信息与所述第1次重传的数据进行译码并译码失败时，存储所述初传数据对应的译码信息， 以及所述初传数据对应的译码信息与所述第1次重传的数据对应的译码信息进行合并的合并结果。
  23. 如权利要求22所述的装置，其特征在于，所述初传数据对应的译码信息，以及所述初传数据对应的译码信息与所述第1次重传的数据对应的译码信息进行合并的合并结果存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第二存储单元为针对任一未调度的进程分配的存储单元。
  24. 如权利要求14-21任一项所述的装置，其特征在于，所述收发单元，还用于接收来自于所述网络设备的所述初传数据；
    所述处理单元，还用于在所述初传数据译码失败时，存储所述初传数据对应的译码信息；
    所述收发单元，还用于接收来自于所述网络设备的第1次重传的数据；
    所述处理单元，还用于在所述初传数据参与合并，且基于所述初传数据对应的译码信息与所述第1次重传的数据进行译码并译码失败时，存储所述初传数据对应的译码信息，以及所述第1次重传的数据对应的译码信息。
  25. 如权利要求24所述的装置，其特征在于，所述初传数据对应的译码信息，以及所述第1次重传的数据对应的译码信息存储于第一存储单元，或第一存储单元和第二存储单元，所述第一存储单元为针对所述初传数据至所述第k次重传的数据调度的进程分配的存储单元，所述第二存储单元为针对任一未调度的进程分配的存储单元。
  26. 如权利要求14-25任一项所述的装置，其特征在于，所述指示信息由MAC-CE或RRC信令承载。
  27. 一种通信装置，其特征在于，包括处理器和存储器；
    所述存储器用于存储计算机执行指令；
    所述处理器用于执行所述存储器所存储的计算机执行指令，以使所述通信装置执行如权利要求1至13任一项所述的方法。
  28. 一种通信装置，其特征在于，包括处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；所述处理器运行所述代码指令以执行如权利要求1至13任一项所述的方法。
  29. 一种可读存储介质，其特征在于，所述可读存储介质用于存储指令，当所述指令被执行时，使如权利要求1至13中任一项所述的方法被实现。
  30. 一种通信系统，其特征在于，所述通信系统包括网络设备和终端设备，所述终端设备执行如权利要求1至13任一项所述的方法。
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