WO2024007224A1 - 一种基于反馈的自适应传输方法 - Google Patents

一种基于反馈的自适应传输方法 Download PDF

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Publication number
WO2024007224A1
WO2024007224A1 PCT/CN2022/104238 CN2022104238W WO2024007224A1 WO 2024007224 A1 WO2024007224 A1 WO 2024007224A1 CN 2022104238 W CN2022104238 W CN 2022104238W WO 2024007224 A1 WO2024007224 A1 WO 2024007224A1
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Prior art keywords
message
feedback information
channel
feedback
communication device
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PCT/CN2022/104238
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English (en)
French (fr)
Inventor
王献斌
张华滋
李榕
乔云飞
王俊
李斌
杜颖钢
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华为技术有限公司
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Priority to PCT/CN2022/104238 priority Critical patent/WO2024007224A1/zh
Publication of WO2024007224A1 publication Critical patent/WO2024007224A1/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

Definitions

  • the present application relates to the field of communication technology, and in particular to a feedback-based adaptive transmission method and device.
  • the sending end can encode the original data for transmission. Due to the presence of noise or interference in the communication channel for transmitting data, the data obtained by the receiving end through the decoding process may be different from the original data of the sending end. losses or errors.
  • the current communication system can adopt the feedback information + retransmission method. That is, after the receiving end receives the data, it can send feedback information to the sending end to indicate whether the receiving end has successfully obtained the data. . Specifically, the sending end sends a data packet to the receiving end. If the receiving end decodes successfully, it can send an acknowledgment (ACK) feedback to the sending end; if the receiving end fails to decode, it sends a non-acknowledgement (ACK) to the sending end. negative acknowledgment, NACK) feedback. Among them, the value of 1 bit can be 1 or 0 to indicate ACK feedback or NACK feedback.
  • the feedback information of the above communication system is given.
  • the feedback information is ACK feedback or NACK feedback. It does not adaptively adjust according to the different noise conditions of the communication channel. Therefore, it is impossible to provide an accurate and real-time channel for the sending end. Feedback is provided to guide the sending end to adaptively adjust for subsequent data transmission.
  • This application provides a feedback-based adaptive transmission method and device to improve the efficiency of channel feedback and improve the transmission performance of the communication system.
  • a feedback-based adaptive transmission method applied to a first communication device.
  • the method includes: receiving a first message from a second communication device; determining feedback information according to the first message, and the feedback The information is used to indicate the transmission quality of the first message, and the length of the feedback information is related to the transmission quality of the first message; the feedback information is sent to the second communication device.
  • the receiving end can determine the feedback information according to the reception situation of the first message, which is used to indicate to the sending end the channel transmission quality of the sending end to transmit the first message to the receiving end, thereby guiding the subsequent sending end to transmit data, forming an adaptive Feedback communication system.
  • the sending end can obtain retransmitted data packets based on the feedback information, or adjust the channel parameters of subsequent data packets to improve the transmission performance of the communication system.
  • sending the feedback information to the second communication device specifically includes: determining a feedback logical channel for transmitting the feedback information according to the length of the feedback information; The mapping relationship is determined to determine the physical channel corresponding to the feedback logical channel; and the feedback information is sent through the physical channel.
  • this application defines the Feedback logical channels, and establish a mapping relationship between feedback logical channels and communication physical channels, thereby realizing feedback, realizing an adaptive feedback system, and improving transmission efficiency and reliability.
  • the feedback information is obtained according to the received symbols of the first message, wherein the feedback information includes at least one of the following data: the received symbols corresponding to the first message, or the The information obtained after quantization processing of the received symbols, or the log likelihood ratio LLR value obtained by demodulation processing according to the received symbols, or the binary vector obtained according to the LLR value.
  • the flexibility of the feedback information is improved by enriching the different lengths and forms of the possible feedback information, thereby adaptively determining the length of the feedback information according to the reception or decoding situation of the first message, and improving communication. While improving efficiency, it can also save channel occupation for transmitting feedback information.
  • the feedback information is obtained by decoding the first message, wherein the feedback information includes at least one of the following data: a hard decision result obtained according to the first message , or the decoding result obtained by decoding the first message, or the intermediate result obtained by the decoding process according to the first message or the indication information corresponding to the decoding result, or the decoding The distance between the result and the received symbol corresponding to the first message.
  • the feedback information includes indication information of channel quality for transmitting the first message, wherein the feedback information includes at least one of the following data: global channel quality indication information, or sub-block Channel quality indication information, or sub-block-based channel quality indication information, or sub-block channel interference parameter information.
  • the feedback information is also used to indicate the channel transmission quality of the second message, where the second message is the same as or different from the first message.
  • the flexibility of the feedback information is improved by enriching the different lengths and forms of the possible feedback information, thereby adaptively determining the length of the feedback information according to the reception or decoding situation of the first message. While improving communication efficiency, it can also save channel occupation for transmitting feedback information.
  • the feedback information is carried on the physical broadcast channel PBCH, or the physical downlink shared channel PDSCH.
  • the feedback logical channel is a broadcast control channel BCCH, a dedicated control channel DCCH, a dedicated traffic channel DTCH or a feedback channel FCH.
  • the worse the transmission quality of the first message the longer the length of the feedback information.
  • a feedback-based adaptive transmission method applied to a second communication device.
  • the method includes: sending a first message to a first communication device; receiving feedback information from the first communication device, the The feedback information is used to indicate the transmission quality of the first message, and the length of the feedback information is related to the transmission quality of the first message.
  • the feedback information includes at least one of the following data: received symbols corresponding to the first message received by the first communication device, or information after quantization of the received symbols, Or, a log-likelihood ratio LLR value obtained by demodulation processing based on the received symbol, or a binary vector obtained based on the LLR value.
  • the feedback information includes at least one of the following data: a hard decision result obtained according to the first message, or a decoding result obtained by decoding the first message, or, The intermediate result obtained by decoding the first message or the indication information corresponding to the decoding result, or the distance between the decoding result and the received symbol corresponding to the first message.
  • the feedback information includes indication information of channel quality for transmitting the first message, wherein the feedback information includes at least one of the following data: global channel quality indication information, or sub-block Channel quality indication information, or sub-block-based channel quality indication information, or sub-block channel interference parameter information.
  • the feedback information is also used to indicate the channel transmission quality of the second message, where the second message is the same as or different from the first message.
  • the feedback information is carried on the physical broadcast channel PBCH, or the physical downlink shared channel PDSCH.
  • the worse the transmission quality of the first message the longer the length of the feedback information.
  • a communication device which device includes: a transceiver module for receiving a first message from a second communication device; a processing module for determining feedback information according to the first message, the feedback information being For indicating the transmission quality of the first message, the length of the feedback information is related to the transmission quality of the first message;
  • the transceiver module is also used to send the feedback information to the second communication device.
  • the processing module is further configured to: determine a logical channel for transmitting the feedback information according to the length of the feedback information; determine the corresponding logical channel according to the mapping relationship between the logical channel and the physical channel. physical channel; the transceiver module is also configured to send the feedback information through the physical channel.
  • the feedback information is obtained according to the received symbols of the first message, wherein the feedback information includes at least one of the following data: the received symbols corresponding to the first message, or the The information obtained after quantization processing of the received symbols, or the log likelihood ratio LLR value obtained by demodulation processing according to the received symbols, or the binary vector obtained according to the LLR value.
  • the feedback information is obtained by decoding the first message, wherein the feedback information includes at least one of the following data: a hard decision result obtained according to the first message , or the decoding result obtained by decoding the first message, or the intermediate result obtained by the decoding process according to the first message or the indication information corresponding to the decoding result, or the decoding The distance between the result and the received symbol corresponding to the first message.
  • the feedback information includes indication information of channel quality for transmitting the first message, wherein the feedback information includes at least one of the following data: global channel quality indication information, or sub-block Channel quality indication information, or sub-block-based channel quality indication information, or sub-block channel interference parameter information.
  • the feedback information is also used to indicate the channel transmission quality of the second message, where the second message is the same as or different from the first message.
  • the feedback information is carried on the physical broadcast channel PBCH, or the physical downlink shared channel PDSCH.
  • the logical channel is a broadcast control channel BCCH, a dedicated control channel DCCH, a dedicated traffic channel DTCH or a feedback channel FCH.
  • the worse the transmission quality of the first message the longer the length of the feedback information.
  • a communication device which device includes: a transceiver module for sending a first message to a first communication device; the transceiver module is also used for receiving feedback information from the first communication device, so The feedback information is used to indicate the transmission quality of the first message, and the length of the feedback information is related to the transmission quality of the first message.
  • the feedback information includes at least one of the following data: received symbols corresponding to the first message received by the first communication device, or information after quantization of the received symbols, Or, a log-likelihood ratio LLR value obtained by demodulation processing based on the received symbol, or a binary vector obtained based on the LLR value.
  • the feedback information includes at least one of the following data: a hard decision result obtained according to the first message, or a decoding result obtained by decoding the first message, or, The intermediate result obtained by decoding the first message or the indication information corresponding to the decoding result, or the distance between the decoding result and the received symbol corresponding to the first message.
  • the feedback information includes indication information of channel quality for transmitting the first message, wherein the feedback information includes at least one of the following data: global channel quality indication information, or sub-block Channel quality indication information, or sub-block-based channel quality indication information, or sub-block channel interference parameter information.
  • the feedback information is also used to indicate the channel transmission quality of the second message, where the second message is the same as or different from the first message.
  • the feedback information is carried on the physical broadcast channel PBCH, or the physical downlink shared channel PDSCH.
  • the worse the transmission quality of the first message the longer the length of the feedback information.
  • a fifth aspect provides a communication device, which includes a processor and a transmission interface; wherein the processor is configured to execute instructions stored in a memory, so that the device executes any of the above first aspects. method described in one item.
  • a sixth aspect provides a communication device, which includes a processor and a transmission interface; wherein the processor is configured to execute instructions stored in a memory, so that the device performs any of the above second aspects. method described in one item.
  • a computer-readable storage medium including a program or instructions.
  • the program or instructions are run by a processor, the method described in any one of the above-mentioned first aspects is executed.
  • a computer-readable storage medium including a program or instructions.
  • the program or instructions are run by a processor, the method described in any one of the above second aspects is executed.
  • a ninth aspect provides a computer program product, which when the computer program product is run on a computer or a processor, causes the computer or the processor to execute the method described in any one of the above first aspects.
  • a tenth aspect provides a computer program product, which when the computer program product is run on a computer or a processor, causes the computer or the processor to execute the method described in any one of the above second aspects.
  • An eleventh aspect provides a communication system, which includes the communication device according to any one of the above first aspects, and the communication device according to any one of the above second aspects.
  • any communication device, computer-readable storage medium, computer program product and communication system provided in the above-mentioned third aspect to the eleventh aspect can be implemented by the corresponding method provided above, therefore , the beneficial effects it can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be described again here.
  • Figure 1 is an architecture diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic diagram of the mapping relationship between logical channels, transmission channels and physical channels provided by the embodiment of the present application;
  • Figure 3 is a schematic diagram of a coding and modulation communication process provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 5 is a schematic flowchart of a feedback-based adaptive transmission method provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of jointly sending feedback information provided by an embodiment of the present application.
  • Figure 7 is a schematic diagram of jointly sending feedback information of different data packets according to an embodiment of the present application.
  • Figure 8 is a schematic diagram of the mapping relationship between a feedback channel and a downlink transmission channel provided by an embodiment of the present application.
  • Figure 9 is a schematic diagram of the mapping relationship between a feedback channel and an uplink transmission channel provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of this embodiment, unless otherwise specified, “plurality” means two or more.
  • the wireless communication system includes at least one communication device.
  • the communication device can be a network device or a terminal, etc., wherein data can be transmitted between the network device and the terminal through a wireless interface.
  • the data sent by the terminal to the network device can be called uplink (DL) transmission
  • the data sent by the network device to the terminal can be called downlink (UL) transmission.
  • the wireless interface can be divided into three protocol layers: Physical Layer (PHY) (L1), Data Link Layer (L2) and Network Layer (L3).
  • L1 is mainly used to provide wireless physical channels for data transmission for high-level services.
  • L2 includes Media Access Control (MAC), Radio Link Control (RLC), Packet Data Convergence Protocol (PDCP) and Service Data Adaptation Protocol, SDAP) four sub-layers.
  • L3 includes the Radio Resource Control (RRC) sublayer of the access layer and the Mobility Management (MM) and Call Control (CC) of the Non Access Stratum (NAS).
  • RRC Radio Resource Control
  • MM Mobility Management
  • CC Call Control
  • Application layer entity It is a protocol layer entity in the communication device, which can be called the application layer or application entity. It is mainly used to generate application (APP) messages or data packets corresponding to communication services.
  • APP application
  • Non-access (non-access stratum, NAS) layer entity It is a protocol layer entity in the communication device. It can also be called the NAS layer or NAS entity. It is mainly used to process the transmission of information between terminals and core network equipment.
  • the content can be user information or control information (such as service establishment, release or mobility management information).
  • the NAS entity has the following functions: session management (including session establishment, modification, release and QoS negotiation), user management (including user data Management and attachment, detachment, etc.) security management (including authentication and encryption initialization between users and the network) and billing, etc.
  • RRC layer entity It is a protocol layer entity in the communication device. It is mainly responsible for generating RRC messages, measurement configuration and reporting. It can also be responsible for other functions: such as sending dedicated NAS messages and transmitting terminal (user equipment, UE) access capability information. and other parameters that reflect the quality of data packet/data flow service.
  • SDAP layer entity It is a protocol layer entity in the communication device. It can also be called SDAP layer or SDAP entity. It is mainly used to maintain the mapping relationship between QoS parameters and SLRB.
  • the QoS parameter may be the fifth generation (5th generation, 5G) quality of service identifier (5G QoS identifier, 5QI) or quality of service flow identifier (QoS flow identifier, QFI) or short range communication packet priority (prose per packet priority, PPPP) or short-range communication packet reliability (prose per packet reliability, PPPR), etc.
  • PDCP layer entity It is a protocol layer entity in the communication device. It can also be called the PDCP layer or PDCP entity. It mainly processes RRC messages from the control plane and Internet Protocol (IP) packets from the data plane. Functions include: header compression and decompression, encryption/decryption, integrity protection, transmission of user data and control plane data, reordering and retransmission processing, etc. Each PDCP layer entity has 1 or 2 corresponding RLC layer entities.
  • RLC layer entity It is a protocol layer entity in the communication device. It can also be called the RLC layer or RLC entity. It is mainly responsible for segmenting/concatenating and reorganizing RLC service data units (service data units, SDU), and through automatic retransmission requests. (automatic repeat request, ARQ) to perform error correction, reorder RLC protocol data unit (PDU), duplicate packet detection, re-segment RLC PDU, etc.
  • service data units service data units
  • ARQ automatic retransmission requests.
  • MAC layer entity It is a protocol layer entity in a communication device. It can also be called MAC layer or MAC entity. It is mainly responsible for matching logical channels and transmission channels, and multiplexing multiple MAC SDUs belonging to one or different logical channels into the same
  • the hybrid automatic repeat request (HARQ) is used to perform error correction, scheduling processing, logical channel priority processing, scheduling information reporting, random access process processing, etc. .
  • PHY layer entity It is a protocol layer entity in a communication device. It can also be called PHY layer entity or PHY entity. It can create, maintain, and dismantle the physical links required to transmit data, and provide mechanical, electronic, Functional and normative properties. Simply put, PHY layer entities ensure that raw data can be transmitted on various physical media.
  • the channel refers to the entire process in which the source information at the sender is processed by the L3, L2, and L1 layers, passes through the wireless environment to the receiver, and then is processed by the L1, L2, and L3 layers at the receiver.
  • channels can be divided into physical channels, transport channels and logical channels.
  • the physical channel refers to the channel that the physical layer actually transmits information.
  • the transmission channel is the channel between the physical layer and the MAC sublayer.
  • the logical channel is the channel between the MAC sublayer and the RLC sublayer. It is used to indicate what information is transmitted.
  • logical channels can be divided into control channels and business channels.
  • control channel is used to transmit control plane information, mainly including:
  • BCCH Broadcast Control Channel
  • PCCH Paging Control Channel
  • CCCH Common Control Channel
  • DCCH Dedicated Control Channel
  • the traffic channel is used to transmit user plane information, including:
  • DTCH Dedicated Traffic Channel
  • Downlink transmission channels mainly include:
  • Broadcast Channel Transmits downlink control information through broadcast.
  • DL-SCH Downlink Shared Channel
  • PCH Paging Channel
  • the uplink transmission channel mainly includes:
  • Uplink Shared Channel used to transmit uplink control or user information.
  • Random Access Channel used to transmit random access preamble.
  • the physical channel refers to the channel that actually transmits signals.
  • the uplink physical channels mainly include: Physical uplink control channel (PUCCH), Physical uplink shared channel (PUSCH), and Physical random access channel (Physical random-access channel, PRACH).
  • PUCCH Physical uplink control channel
  • PUSCH Physical uplink shared channel
  • PRACH Physical random access channel
  • Downlink physical channels mainly include: Physical downlink control channel (PDCCH), Physical downlink shared channel (PDSCH), and Physical broadcast channel (PBCH).
  • PDCCH Physical downlink control channel
  • PDSCH Physical downlink shared channel
  • PBCH Physical broadcast channel
  • Data transmission in the communication system can adopt a coding and modulation scheme.
  • Figure 3 shows the communication process of coding and modulation at the sending end and demodulation and decoding at the receiving end. Specifically, the original signal generated by the transmitting end is sent to the receiving end after undergoing source coding processing, channel coding processing, modulation and other processes. The receiving end processes the received digital signal through demodulation processing, channel decoding processing, and source recovery to obtain the target signal.
  • source coding refers to the process of representing complex source information such as text, sound, images or videos with digital signals. By using the correlation of data to remove redundant information, analog signals are converted into digital signals. Different source information corresponds to different digital coding algorithms, such as speech compression coding, classified image compression coding, and multimedia compressed data coding.
  • Channel coding refers to adding a part of redundant information to the digital sequence to be sent according to a preset algorithm, so that the digital sequence of the encoded bit stream has correlation or regularity.
  • the receiving end can use the correlation or regularity between digital sequences to discover the existing errors, and can use redundant information to recover the original information sent, thereby improving Reliability of data transmission.
  • channel codes include cyclic redundancy check codes, Turbo codes, Polar codes (polar codes), etc.
  • the specific coding algorithm can be introduced with reference to existing related technologies, which will not be described in detail in this application.
  • the baseband signal For digital signals to be transmitted on wireless channels, the baseband signal must first be converted to a higher frequency band.
  • the amplitude, frequency and phase of high-frequency oscillating signals can all carry digital signal information.
  • the source information is a baseband signal containing a DC component and a lower frequency AC component, and cannot be transmitted directly in a wireless environment.
  • Modulation also called radio frequency modulation
  • Modulation is the process of processing low-frequency signals into radio frequency signals suitable for wireless transmission, and reflecting changes in low-frequency signals by changing the amplitude, phase or frequency of the radio frequency carrier signal.
  • Commonly used modulation methods include amplitude keying ASK, frequency shift keying FSK, absolute phase shift keying PSK, etc.
  • Demodulation refers to the inverse processing of modulation, which is the process of extracting useful information from radio frequency signals for reception and processing. Demodulation processing is used to restore the digital baseband signal, and coherent demodulation or non-coherent demodulation can be used to restore the digital baseband signal.
  • Channel decoding is the inverse processing of channel coding. It refers to decoding according to certain rules, discovering or correcting errors during the decoding process, and improving the anti-interference ability of the communication system.
  • Source recovery is the inverse processing of source coding and is used to decompress or restore analog signals.
  • inventions of the present application can be applied to wireless communication systems such as 5G and satellite communications.
  • the communication system can include network equipment and at least one terminal.
  • the network device can specifically be an access network (AN)/radio access network (RAN) device, or a device composed of multiple 5G-AN/5G-RAN nodes, or It is a base station (nodeB, NB), an evolved base station (evolution nodeB, eNB), a next-generation base station (generation nodeB, gNB), a transceiver point (transmission receive point, TRP), a transmission point (transmission point, TP) and some kind of any of the other access nodes.
  • the device for realizing the function of the wireless access network device may be the wireless access network device, or may be a device that can support the wireless access network device to realize the function, such as a chip system.
  • the technical solution provided by the embodiment of the present application is described by taking the device for realizing the functions of the wireless access network device as a wireless access network device as an example.
  • a wireless communication system usually consists of cells, each cell includes a base station (Base Station, BS), and the base station provides communication services to multiple mobile stations (Mobile Station, MS).
  • the base station includes a baseband unit (Baseband Unit, BBU) and a remote radio unit (English: Remote Radio Unit, RRU).
  • BBU Baseband Unit
  • RRU Remote Radio Unit
  • the BBU and RRU can be placed in different places. For example, the RRU is remote and placed in a high traffic area, and the BBU is placed in the central computer room. BBU and RRU can also be placed in the same computer room.
  • the BBU and RRU can also be different components under the same rack.
  • the terminal can be a mobile phone (mobile phone), tablet computer (Pad), computer with wireless transceiver function, vehicle-mounted terminal, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart homes, terminal equipment in 5G networks, or future evolved public land mobile networks (PLMN) Terminal equipment, on-board unit (OBU), on-board box (also known as on-board T-Box (telematics box)), roadside unit (Road Side Unit), complete vehicle, intelligent driving vehicle or can be realized Devices or chips with the aforementioned equipment functions, etc.
  • OBU on-board unit
  • T-Box Telematics box
  • Road Side Unit roadside unit
  • the methods and steps implemented by the terminal in this application can also be implemented by components (such as chips or circuits) that can be used in the terminal.
  • the terminal and the components (such as chips or circuits) that can be installed on the terminal may also be called terminal equipment, or UUE.
  • a terminal or network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU) and memory (also called main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system or windows operating system, etc.
  • This application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the present application do not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be run to provide according to the embodiment of the present application.
  • the execution subject of the method provided by the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or network device that can call a program and execute the program.
  • the wireless communication systems to which the embodiments of this application can be applied include but are not limited to: Narrow Band-Internet of Things (NB-IoT), Global System for Mobile Communications (GSM) , Enhanced Data rate for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 (Code Division Multiple Access, CDMA2000),
  • NB-IoT Narrow Band-Internet of Things
  • GSM Global System for Mobile Communications
  • EDGE Enhanced Data rate for GSM Evolution
  • WCDMA Wideband Code Division Multiple Access
  • CDMA2000 Code Division Multiple Access 2000
  • TD-SCDMA Time Division-Synchronization Code Division Multiple Access
  • LTE Long Term Evolution
  • 5G mobile communication systems are Enhanced Mobile Broadband (Enhanced Mobile Broadband, eMBB), high-reliable and low-latency communications (Ultra-reliable and Low Latency Communications, URLLC) or massive machine type communication (Massive Machine Type Communication, mMTC) and other scenarios.
  • eMBB Enhanced Mobile Broadband
  • the sending device and the receiving device are relative concepts.
  • the sending device may refer to the device that sends the data packet
  • the receiving device may refer to the device that receives the data packet.
  • the communication type for data transmission between the network device and the terminal may be unicast communication, multicast communication or broadcast communication, or other types of communication.
  • the embodiments of this application only take unicast communication as an example for description. Other types of communication can be implemented by referring to the communication methods provided in the embodiments of this application.
  • FIG. 4 is a schematic diagram of a communication device 400 provided by an embodiment of the present application.
  • the communication device can be used to implement the communication method provided by an embodiment of the present application.
  • the communication device 400 includes at least one processor 401, a communication line 402, and at least one communication interface 403; further, it may also include a memory 404.
  • the processor 401, the memory 404 and the communication interface 403 may be connected through a communication line 402.
  • at least one may be one, two, three or more, which is not limited by the embodiment of the present application.
  • the processor 401 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), or a microprocessor. device, microcontroller, programmable logic device (PLD) or any combination thereof.
  • the processor can also be any other device with processing functions, such as a circuit, device or software module.
  • the communication line 402 may include a path for transmitting information between components included in the communication device.
  • the communication interface 403 is used to communicate with other vehicles or communication networks (such as Ethernet, wireless access network (radio access network, RAN), wireless local area networks (WLAN), etc.).
  • the communication interface 403 may be a module, a circuit, a transceiver, or any device capable of communication.
  • the memory 404 may be a read-only memory (ROM) or other types of static storage devices that can store static information and/or instructions, or it may be a random access memory (random access memory). , RAM) or other types of dynamic storage devices that can store information and/or instructions, and can also be electrically erasable programmable read-only memory (EEPROM), read-only compact discs (compact disc read- only memory, CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store Without limitation, any other medium that represents the desired program code in the form of instructions or data structures and can be accessed by a computer.
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read- only memory
  • the memory 404 can exist independently of the processor 401, that is, the memory 404 can be a memory external to the processor 401. In this case, the memory 404 can be connected to the processor 401 through the communication line 402 for storing instructions. or program code. When the processor 401 calls and executes instructions or program codes stored in the memory 404, it can implement the communication method provided by the following embodiments of the present application.
  • the memory 404 can also be integrated with the processor 401, that is, the memory 404 can be an internal memory of the processor 401.
  • the memory 404 can be a cache, which can be used to temporarily store some data and/or or instruction information, etc.
  • the processor 401 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 4 .
  • the communication device 400 may include multiple processors, such as the processor 401 and the processor 407 in FIG. 4 .
  • the communication device 400 may also include an output device 405 and an input device 406.
  • the input device 406 may be a microphone or a joystick
  • the output device 405 may be a display screen, a speaker, or other devices.
  • the terminal and/or the network device can perform some or all of the operations in the embodiment of the present application. These operations or operations are only examples.
  • the embodiment of the present application can also perform other operations or various operations. of deformation.
  • various operations may be performed in a different order than those presented in the embodiments of the present application, and it is possible that not all operations in the embodiments of the present application may be performed.
  • Figure 5 is a flow chart of a feedback-based adaptive transmission method provided by an embodiment of the present application. As shown in Figure 5, the method may include the following steps.
  • S501 The second communication device sends the first message to the first communication device.
  • the first communication device may be the above-mentioned terminal or network device
  • the second communication device may be the above-mentioned network device or terminal.
  • sending the first message by the second communication device to the first communication device refers to downlink transmission of data.
  • sending the first message by the second communication device to the first communication device refers to uplink transmission of data. This application does not limit this.
  • the second communication device can obtain the symbol sequence corresponding to the first message through the aforementioned source coding, channel coding, modulation and other processes, and then transmit the symbol sequence through the physical channel.
  • the first communication device is a terminal and the second communication device is a network device.
  • the network device can use the physical downlink control channel PDCCH and the physical downlink control channel PDCCH.
  • the downlink shared channel PDSCH or the physical broadcast channel PBCH sends the first message to the terminal.
  • the second communication device that is the sender of the first message is also called the sending end
  • the first communication device that is the recipient of the first message is also called the receiving end.
  • the first communication device receives the first message and determines feedback information according to the first message.
  • the first communication device receives the first message from the second communication device. Specifically, the first communication device receives the received symbol corresponding to the first message on the physical channel.
  • the received symbols refer to the symbol sequence obtained by the sending end, that is, the second communication device, through the above processing. After adding noise and other interference information through the transmission of the physical channel, the receiving end, that is, the first communication device, receives the symbol sequence.
  • the symbol sequence received by the receiving end is called a received symbol to distinguish it from the symbol sequence sent by the transmitting end.
  • the first communication device can obtain the information carried by the first message through the aforementioned processing processes such as demodulation, channel decoding, and source recovery.
  • the first communication device may determine feedback information according to the received first message, where the feedback information is used to indicate the channel transmission quality of the first message, and the length of the feedback information is related to the transmission quality of the first message. Specifically, the first communication device can determine the feedback information according to the received first message, which mainly needs to determine the length of the feedback information (ie, the amount of data) and the form of the feedback information. Several different forms of feedback information will be listed in detail below and will not be repeated here.
  • the receiving end can determine the length and form of the feedback information and generate corresponding feedback information according to the reception situation of the first message, which is used to indicate to the sending end the channel transmission quality of the first message transmitted by the sending end to the receiving end, thereby It guides the subsequent sending end to transmit data and forms an adaptive feedback communication system.
  • the sending end can obtain retransmitted data packets based on the feedback information, or adjust the channel parameters of subsequent data packets to improve the transmission performance of the communication system.
  • the longer the length of the feedback information the worse the transmission quality of the corresponding first message; conversely, the shorter the length of the feedback information, the better the transmission quality of the corresponding first message. Therefore, when the transmission quality of the first message is poor, the receiving end can use longer feedback information to carry the first message reception/decoding situation or channel noise situation, so that the sending end can retransmit the data packet based on the feedback information, improving Communication efficiency.
  • the receiving end can feedback the reception/decoding status of the first message (such as indicating successful decoding) through short feedback information (such as 1 bit), so that the sending end can use the feedback information to Continue to perform new transmissions (such as no need to retransmit or retransmit a smaller amount of data), saving signaling overhead and improving communication efficiency, thereby realizing a feedback system based on real-time channel quality adaptation and improving the overall communication quality and reliability of the system.
  • short feedback information such as 1 bit
  • the first communication device can obtain feedback information according to the received symbol of the first message. That is to say, the receiving end can obtain feedback information based on the received symbols (that is, the received symbol sequence).
  • the feedback information obtained by the receiving end according to the received symbols includes at least one of the following: the feedback information is the received symbols corresponding to the first message. In other words, the receiving end uses all received symbols as feedback information to the transmitting end.
  • the feedback information is information obtained after quantization of the received symbols, that is, after the receiving end obtains the received symbols, the information obtained after quantization of the received symbols is used as feedback information.
  • the feedback information is a log likelihood ratio (LLR) value obtained after demodulation processing based on the received symbols.
  • the feedback information is a binary vector obtained based on the LLR value. For example, the feedback information is obtained based on the feedback capacity size d and the LLR value. Among them, the d bit positions with the smallest LLR amplitude are set to 1, and the remaining bit positions are set to 0, obtaining The results are used as feedback information.
  • the first communication device may decode the first message to obtain feedback information.
  • the feedback information obtained by the receiving end based on the received symbols includes at least one of the following: the feedback information is a hard decision result obtained based on the first message. For example, the receiving end performs channel decoding and recovers the results based on the first message or received symbols. Binary information serves as feedback information.
  • the feedback information is the decoding result obtained by decoding the first message, that is, the binary information obtained by the decoding result of the received symbol through the decoder.
  • the feedback information may also be a combination of the above-mentioned hard decision result and the decoding result of the decoder, that is, the hard decision result + the decoding result, used to indicate uncertain positions in the decoding process.
  • the feedback information may also be non-binary indication information obtained by decoding according to the first message, including at least one of the following: decoding according to the received symbol to obtain indication information corresponding to the decoding result, such as ACK or NACK Feedback to indicate successful decoding or failed decoding.
  • the feedback information is the distance between the decoding result obtained by performing the decoding process on the first message and the received symbol of the first message, for example, the Euclidean distance.
  • the feedback information is indication information obtained from an intermediate result of decoding processing based on the received symbols.
  • decoding processing is performed based on the received symbols to obtain a Low Density Parity Check Code (LDPC), and each LDPC code is The LLR mean value of the round iteration is used as feedback information, or polar code decoding (Polar code) is performed according to the received symbol, and the index of the information bit whose minimum PM value of the Polar code exceeds a certain threshold is used as feedback information.
  • LDPC Low Density Parity Check Code
  • the first communication device may use indication information based on channel conditions as feedback information, that is, the feedback information includes channel quality indication information.
  • the feedback information includes at least one of the following information: global channel quality indication information, or sub-block channel quality indication information, or sub-block-based channel quality indication information, or sub-block channel interference parameter information.
  • the receiving end can obtain the above corresponding information through channel estimation.
  • the feedback information proposed in the embodiment of the present application is used to carry more information (or more complex information) by increasing the bits of the feedback information, and is used to indicate The quality of the transmission channel or the real-time noise situation. Therefore, the sending end can determine the real-time channel quality based on the feedback information from the receiving end, and adjust the parameters of subsequent transmission data packets; or, based on the feedback information, determine the part of the data packet that is lost or decoded incorrectly, so as to determine the retransmission of the data packet to achieve self-adaptation.
  • Feedback communication system improves the transmission performance of the communication system.
  • the first communication device determines the feedback information according to the first message, and may determine the length or form of the feedback information according to a preset rule. For example, after the first communication device receives the first message, the decoder performs decoding. If the decoding accuracy rate is lower than a preset first threshold, the received symbol corresponding to the first message can be used as feedback information. If the decoding accuracy rate is higher than the preset first threshold and the first preset second threshold, the quantized information on the received symbols corresponding to the first message may be used as feedback information.
  • the specific rules for determining feedback information are not specifically limited. In actual implementation, they need to be formulated in conjunction with many properties of the communication device itself.
  • the feedback information corresponding to each data packet is different, and the data amount of the feedback information (such as the information length) may also be different. According to The data amount of the retransmitted data packets obtained by the feedback information may also be different. Therefore, the feedback information generated by the receiving end for each data packet is usually feedback of an indefinite length, which is not conducive to the sending end's identification and processing of the feedback information.
  • the feedback information corresponding to multiple data packets can be jointly fed back, thereby reducing the cost of the receiving end (referring to the receiving end of the feedback information, that is, the sending of the first message mentioned above in the present application). terminal) complexity of data processing.
  • the receiving end can send the feedback information corresponding to data packet A, data packet B and data packet C together to the receiving end.
  • the data amount (such as information length) of the feedback information corresponding to each data may be different.
  • the multiple data packets may be data packets received by the same communication device in different time slots, or may be data packets received by different communication devices in the same time slot.
  • the receiving end can perform joint feedback by providing feedback information corresponding to data packets received by the same terminal in different time slots. That is to say, the feedback information includes feedback information corresponding to multiple data packets, and is used to indicate the channel transmission quality of the terminal when receiving the first message, the second message, etc., where the first message is different from the second message.
  • the first message corresponds to the data packet 1 received by the first terminal at time T1
  • the second message corresponds to the data packet 2 received by the first terminal at time T2.
  • Time T1 is different from time T2.
  • the first terminal can jointly send feedback information corresponding to data packet 1 and data packet 2 to the network device.
  • the receiving end can also perform joint feedback by providing feedback information corresponding to data packets received by different terminals in the same time slot. That is to say, the feedback information includes feedback information corresponding to multiple data packets, and is used to indicate the channel transmission quality of different terminals receiving the first message, the second message, etc., where the first message and the second message may be different or the same.
  • the network device broadcasts a first message (ie, a second message), and multiple different terminals may receive the first message in the same time slot.
  • the first terminal receives data 1 at time T1
  • the second terminal receives data packet 3 at time T1
  • the third terminal receives data packet 4 at time T3.
  • Terminals can interact with each other through information, and the first terminal jointly sends the feedback information of data packet 1, data packet 3, and data packet 4 to the network device.
  • S503 The first communication device sends feedback information to the second communication device.
  • the first communication device can determine the feedback logical channel used to transmit the feedback information according to the length of the feedback information and the definition of the logical channel; and then determine the physical channel corresponding to the feedback logical channel according to the mapping relationship between the logical channel and the physical channel; Feedback information is sent over the physical channel.
  • the feedback logical channel used to transmit feedback information can reuse the existing broadcast control channel BCCH, dedicated control channel DCCH, or dedicated business channel DTCH; or, it can also be defined by a new feedback channel (feedback channel).
  • Channel (FCH) specifically used to transmit feedback information.
  • the feedback information can be carried on the physical broadcast channel PBCH, or the physical downlink shared Channel PDSCH.
  • the first communication device sends feedback information to the second communication device, which may specifically include:
  • the MAC entity of the first communication device determines the first logical channel based on the length of the feedback information and the definition of the logical channel.
  • the first logical channel is a logical channel used for sending feedback information.
  • the first logical channel multiplexes one of the several existing logical channels mentioned above, for example, the first logical channel can be the broadcast control channel BCCH, the dedicated control channel DCCH, or the dedicated traffic channel DTCH, then it can be The functional definition of feedback information is added to the definition of the above logical channel.
  • the first logical channel can also be implemented by newly defining a logical channel.
  • the MAC entity allocates transmission resources for the feedback information in the first logical channel.
  • the PHY entity sends feedback information through transmission resources.
  • the definition of feedback information can be added to the existing logical channel definition to transmit feedback information.
  • the definition of feedback information can be added to the broadcast control channel BCCH, dedicated control channel DCCH, and dedicated traffic channel DTCH.
  • a new logical channel can be defined, such as a feedback channel FCH, specifically used for transmitting feedback information; and a mapping relationship between the feedback channel FCH and the transmission channel can be determined.
  • the logical channel may also include a feedback channel FCH.
  • FCH feedback channel
  • the transmission channel corresponding to the FCH may be the BCH or DL-SCH. If the FCH is mapped to the transmission channel BCH, the physical channel carrying the feedback information may be the PBCH; if the FCH is mapped to the transmission channel DL-SCH, the physical channel carrying the feedback information may be the PDSCH.
  • FCH-BCH-Messgae can be defined as follows:
  • the logical channel may include CCCH, DCCH, DTCH and feedback channel FCH.
  • the transmission channel corresponding to the FCH may be UL-SCH, and the corresponding physical channel may be PUSCH.
  • FCH-UL-SCH-Messgae can be defined as follows:
  • the above embodiments of the present application propose a feedback-based adaptive transmission method, specifically by enriching the forms and contents of multiple possible feedback information, and defining the mapping relationship between feedback information and logical channels.
  • the feedback information is carried in the current standard
  • the existing logical channel in the system or the feedback information can be carried in the newly defined feedback channel, thereby realizing an adaptive feedback communication system to solve the problem that the current communication system does not support adaptive feedback with noise conditions. It is beneficial to improve the efficiency of data transmission and improve the overall performance of the communication system.
  • this application also provides a communication device for implementing the steps performed by the first communication device in the foregoing embodiments.
  • the communication device 1000 may include a transceiver module 1001 and a processing module 1002.
  • the transceiver module 1001 is used to receive the first message from the second communication device.
  • the processing module 1002 is configured to determine feedback information according to the first message, the feedback information is used to indicate the transmission quality of the first message, and the length of the feedback information is related to the transmission quality of the first message.
  • the transceiver module 1001 is also used to send the feedback information to the second communication device.
  • the processing module 1002 is further configured to: determine a logical channel for transmitting the feedback information according to the length of the feedback information; determine the corresponding logical channel according to the mapping relationship between the logical channel and the physical channel. physical channel.
  • the transceiver module 1001 is also configured to send the feedback information through the physical channel.
  • the feedback information is obtained according to the received symbols of the first message, wherein the feedback information includes at least one of the following data: the received symbols corresponding to the first message, or the The information obtained after quantization processing of the received symbols, or the log likelihood ratio LLR value obtained by demodulation processing according to the received symbols, or the binary vector obtained according to the LLR value.
  • the feedback information is obtained by decoding the first message, wherein the feedback information includes at least one of the following data: a hard decision result obtained according to the first message , or the decoding result obtained by decoding the first message, or the intermediate result obtained by the decoding process according to the first message or the indication information corresponding to the decoding result, or the decoding The distance between the result and the received symbol corresponding to the first message.
  • the feedback information includes indication information of channel quality for transmitting the first message, wherein the feedback information includes at least one of the following data: global channel quality indication information, or sub-block Channel quality indication information, or sub-block-based channel quality indication information, or sub-block channel interference parameter information.
  • the feedback information is also used to indicate the channel transmission quality of the second message, where the second message is the same as or different from the first message.
  • the feedback information is carried on the physical broadcast channel PBCH, or the physical downlink shared channel PDSCH.
  • the logical channel is a broadcast control channel BCCH, a dedicated control channel DCCH, a dedicated traffic channel DTCH or a feedback channel FCH.
  • the worse the transmission quality of the first message the longer the length of the feedback information.
  • the communication device 1000 may include a transceiver module 1001.
  • the transceiver module 1001 is used to send a first message to a first communication device.
  • the transceiver module 1001 is also configured to receive feedback information from the first communication device.
  • the feedback information is used to indicate the transmission quality of the first message.
  • the length of the feedback information is related to the transmission quality of the first message. .
  • the feedback information includes at least one of the following data: received symbols corresponding to the first message received by the first communication device, or information after quantization of the received symbols, Or, a log-likelihood ratio LLR value obtained by demodulation processing based on the received symbol, or a binary vector obtained based on the LLR value.
  • the feedback information includes at least one of the following data: a hard decision result obtained according to the first message, or a decoding result obtained by decoding the first message, or, The intermediate result obtained by decoding the first message or the indication information corresponding to the decoding result, or the distance between the decoding result and the received symbol corresponding to the first message.
  • the feedback information includes indication information of channel quality for transmitting the first message, wherein the feedback information includes at least one of the following data: global channel quality indication information, or sub-block Channel quality indication information, or sub-block-based channel quality indication information, or sub-block channel interference parameter information.
  • the feedback information is also used to indicate the channel transmission quality of the second message, where the second message is the same as or different from the first message.
  • the feedback information is carried on the physical broadcast channel PBCH, or the physical downlink shared channel PDSCH.
  • the worse the transmission quality of the first message the longer the length of the feedback information.
  • this application also provides a communication device, which may be a terminal device or a network device shown in Figure 4 .
  • the communication device has the function of realizing the first communication device or the second communication device in each of the above possible implementations.
  • the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the above transmission module can be a transceiver, which can include an antenna and a radio frequency circuit, etc.
  • the processing module can be a processor, such as a baseband chip, etc.
  • the transmission module may be a radio frequency unit
  • the processing module may be a processor.
  • the transmission module may be an input interface and/or an output interface of the chip system
  • the processing module may be a processor of the chip system, such as a central processing unit (CPU).
  • CPU central processing unit
  • the transmission device of the side link is presented in the form of dividing various functional modules in an integrated manner.
  • Module here may refer to specific circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other devices that can provide the above functions.
  • the communication device may take the form shown in FIG. 4 mentioned above.
  • the functions/implementation processes of the processing module 1002 and so on in Figure 10 can be implemented by the processor 401 in Figure 4 calling the computer program instructions stored in the memory 404.
  • the function/implementation process of the transceiver module 1001 in Figure 10 can be through the communication interface 403 in Figure 4 .
  • the processor 401 in Figure 4 can implement the operation of the first communication device or the second communication device in the above method embodiments by calling the computer execution instructions stored in the memory 404, so that the device 400 can perform the operations of the first communication device or the second communication device in the above method embodiments.
  • the processor 401 in Figure 4 can implement the operation of the first communication device or the second communication device in the above method embodiments by calling the computer execution instructions stored in the memory 404, so that the device 400 can perform the operations of the first communication device or the second communication device in the above method embodiments.
  • the communication device in each of the above device embodiments may completely correspond to the first communication device or the second communication device in the method embodiment, and corresponding steps may be performed by corresponding modules or units.
  • the transceiver module may be an interface circuit used by the chip to receive signals from other chips or devices.
  • the above transceiver module for sending or receiving is an interface circuit of the device and is used to send signals to other devices.
  • the transceiver module can be used to send signals to other chips or devices. Interface circuit that sends signals.
  • a computer-readable storage medium or a computer program product including instructions is also provided, and the instructions can be executed by the processor 401 of the communication device 400 to complete the method of the above embodiment. Therefore, the technical effects that can be obtained can be referred to the above method embodiments, and will not be described again here.
  • the computer program product includes instructions. When the instructions are executed, the computer can respectively perform operations of the terminal device or network device corresponding to the above method.
  • An embodiment of the present application also provides a system chip.
  • the system chip includes: a processing unit and a communication unit.
  • the processing unit may be, for example, a processor.
  • the communication unit may be, for example, an input/output interface, a pin, or a circuit.
  • the processing unit can execute computer instructions to cause the communication device to which the chip is applied to perform the operations of the terminal device and the network device in the method provided by the embodiments of the present application.
  • any communication device provided in the above embodiments of the present application may include the system chip.
  • the computer instructions are stored in a storage unit.
  • An embodiment of the present application also provides a communication system, which may include: a first communication device and a second communication device in any of the above embodiments.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • 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, or other programmable device.

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Abstract

本申请提供一种基于反馈的自适应传输方法及装置，涉及通信技术领域，用于提高通信效率，提高通信系统的传输性能。该方法包括：第一通信装置接收来自第二通信装置的第一消息；根据第一消息确定反馈信息，所述反馈信息用于指示第一消息的信道传输质量，反馈信息的长度与所述第一消息的传输质量相关；向第二通信装置发送反馈信息。

Description

一种基于反馈的自适应传输方法 技术领域
本申请涉及通信技术领域，尤其涉及一种基于反馈的自适应传输方法及装置。
背景技术
在无线通信系统中，发送端可以对原始数据采用编码的方式进行传输，由于传输数据的通信信道存在噪声或干扰，接收端通过译码过程所获取的数据相较于发送端的原始数据可能存在一定的损耗或错误。
为了使得接收端可以成功接收并恢复出完整数据，目前通信系统可以采用反馈信息+重传的方式，即接收端接收数据之后，可以向发送端发送反馈信息，用于指示接收端是否成功获取数据。具体来说，发送端向接收端发送一个数据包，若接收端译码成功，则可以向发送端发送确认(acknowledge，ACK)反馈；若接收端译码失败，则向发送端发送非确认(negative acknowledgment，NACK)反馈。其中，可以用1个比特的值为1或0来指示ACK反馈或NACK反馈。
但是，上述通信系统的反馈信息是给定的，如反馈信息为ACK反馈或为NACK反馈，并不随着通信信道噪声情况的不同进行自适应调整，因此，无法为发送端提供准确且实时的信道反馈以指导发送端自适应调整进行后续数据传输。
发明内容
本申请提供一种基于反馈的自适应传输方法及装置，用于提高信道反馈的效率，提高通信系统的传输性能。
为达到上述目的，本申请采用如下技术方案：
第一方面，提供一种基于反馈的自适应传输方法，应用于第一通信装置，该方法包括：接收来自第二通信装置的第一消息；根据所述第一消息确定反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关；向所述第二通信装置发送所述反馈信息。
上述技术方案中，接收端可以根据第一消息的接收情况确定反馈信息，用于向发送端指示发送端向接收端传输第一消息的信道传输质量，从而指导后续发送端传输数据，形成自适应反馈的通信系统。例如，发送端可以根据反馈信息得到重传数据包，或者调整后续发送数据包的信道参数等，以提升通信系统的传输性能。
在一种实施方式中，向所述第二通信装置发送所述反馈信息，具体包括：根据所述反馈信息的长度，确定用于传输所述反馈信息的反馈逻辑信道；根据逻辑信道与物理信道的映射关系，确定所述反馈逻辑信道对应的物理信道；通过所述物理信道发送所述反馈信息。
上述可能的实施方式中，由于本申请的反馈信息是接收端根据实时的信道传输质量或信道噪声情况确定的，反馈信息的长度是不定长的，因此，本申请通过定义用于传输反馈信息的反馈逻辑信道，并建立反馈逻辑信道与通信物理信道的映射关系，从而实现反馈，实现自适应的反馈系统，提高传输效率以及可靠性。
在一种实施方式中，反馈信息是根据所述第一消息的接收符号得到的，其中，所述反馈信息包括以下数据中的至少一种：所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
上述可能的实施方式中，具体通过丰富多种可能的反馈信息的不同长度与形式，提高反馈信息的灵活性，从而根据第一消息的接收或译码情况自适应确定反馈信息的长度，提高通信效率的情况下还能节省传输反馈信息的信道占用。
在一种实施方式中，反馈信息是根据对所述第一消息进行译码处理得到的，其中，所述反馈信息包括以下数据中的至少一种：根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
在一种实施方式中，反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
在一种实施方式中，反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
上述几种可能的实施方式中，具体通过丰富多种可能的反馈信息的不同长度与形式，提高反馈信息的灵活性，从而根据第一消息的接收或译码情况自适应确定反馈信息的长度，提高通信效率的情况下还能节省传输反馈信息的信道占用。
在一种实施方式中，反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
在一种实施方式中，反馈逻辑信道为广播控制信道BCCH、专用控制信道DCCH、专用业务信道DTCH或者反馈信道FCH。
在一种实施方式中，第一消息的传输质量越差，所述反馈信息的长度越长。
第二方面，提供一种基于反馈的自适应传输方法，应用于第二通信装置，该方法包括：向第一通信装置发送第一消息；接收来自所述第一通信装置的反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关。
在一种实施方式中，反馈信息包括以下数据中的至少一种：所述第一通信装置接收到的所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
在一种实施方式中，反馈信息包括以下数据中的至少一种：根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
在一种实施方式中，反馈信息包括传输所述第一消息的信道质量的指示信息，其 中，所述反馈信息包括以下数据中的至少一种：全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
在一种实施方式中，反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
在一种实施方式中，反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
在一种实施方式中，第一消息的传输质量越差，所述反馈信息的长度越长。
第三方面，提供一种通信装置，该装置包括：收发模块，用于接收来自第二通信装置的第一消息；处理模块，用于根据所述第一消息确定反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关；
所述收发模块，还用于向所述第二通信装置发送所述反馈信息。
在一种实施方式中，处理模块，还用于：根据所述反馈信息的长度，确定用于传输所述反馈信息的逻辑信道；根据逻辑信道与物理信道的映射关系，确定所述逻辑信道对应的物理信道；所述收发模块，还用于通过所述物理信道发送所述反馈信息。
在一种实施方式中，反馈信息是根据所述第一消息的接收符号得到的，其中，所述反馈信息包括以下数据中的至少一种：所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
在一种实施方式中，反馈信息是根据对所述第一消息进行译码处理得到的，其中，所述反馈信息包括以下数据中的至少一种：根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
在一种实施方式中，反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
在一种实施方式中，反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
在一种实施方式中，反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
在一种实施方式中，逻辑信道为广播控制信道BCCH、专用控制信道DCCH、专用业务信道DTCH或者反馈信道FCH。
在一种实施方式中，第一消息的传输质量越差，所述反馈信息的长度越长。
第四方面，提供一种通信装置，该装置包括：收发模块，用于向第一通信装置发送第一消息；所述收发模块，还用于接收来自所述第一通信装置的反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传 输质量相关。
在一种实施方式中，反馈信息包括以下数据中的至少一种：所述第一通信装置接收到的所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
在一种实施方式中，反馈信息包括以下数据中的至少一种：根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
在一种实施方式中，反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
在一种实施方式中，反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
在一种实施方式中，反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
在一种实施方式中，第一消息的传输质量越差，所述反馈信息的长度越长。
第五方面，提供一种通信装置，该通信装置包括处理器与传输接口；其中，所述处理器被配置为执行存储在存储器中的指令，以使得所述装置执行如上述第一方面中任一项所述的方法。
第六方面，提供一种通信装置，该通信装置包括处理器与传输接口；其中，所述处理器被配置为执行存储在存储器中的指令，以使得所述装置执行如上述第二方面中任一项所述的方法。
第七方面，提供一种计算机可读存储介质，包括程序或指令，当所述程序或指令被处理器运行时，如上述第一方面中任意一项所述的方法被执行。
第八方面，提供一种计算机可读存储介质，包括程序或指令，当所述程序或指令被处理器运行时，如上述第二方面中任意一项所述的方法被执行。
第九方面，提供一种计算机程序产品，当所述计算机程序产品在计算机或处理器上运行时，使得所述计算机或所述处理器执行如上述第一方面中任一项所述的方法。
第十方面，提供一种计算机程序产品，当所述计算机程序产品在计算机或处理器上运行时，使得所述计算机或所述处理器执行如上述第二方面中任一项所述的方法。
第十一方面，提供一种通信系统，所述通信系统包括如上述第一方面中任一项所述的通信装置，以及如上述第二方面中任一项所述的通信装置。
可以理解地，上述第三方面至第十一方面中提供的任一种通信装置、计算机可读存储介质、计算机程序产品和通信系统，均可以由上文所提供的对应的方法来实现，因此，其所能达到的有益效果可参考上文所提供的对应的方法中的有益效果，此处不再赘述。
附图说明
图1为本申请实施例提供的一种通信系统的架构图；
图2为本申请实施例提供的逻辑信道、传输信道与物理信道的映射关系示意图；
图3为本申请实施例提供的一种编码调制的通信过程示意图；
图4为本申请实施例提供的一种通信装置的结构示意图；
图5为本申请实施例提供的一种基于反馈的自适应传输方法的流程示意图；
图6为本申请实施例提供的一种联合发送反馈信息的示意图；
图7为本申请实施例提供的一种联合发送不同数据包的反馈信息的示意图；
图8为本申请实施例提供的一种反馈信道与下行传输信道的映射关系示意图；
图9为本申请实施例提供的一种反馈信道与上行传输信道的映射关系示意图；
图10为本申请实施例提供的一种通信装置的结构示意图。
具体实施方式
以下，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
需要说明的是，本申请中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
首先，对本申请涉及的相关技术进行简单介绍。
无线通信系统中包括至少一个通信装置，如图1所示，通信装置可以为网络设备或终端等，其中，网络设备与终端之间可以通过无线接口进行数据传输。其中，可以将终端向网络设备发送数据的称为上行(downlink，DL)传输，将网络设备向终端发送数据称为下行(uplink，UL)传输。
无线接口可分为三个协议层：物理层(Physical Layer，PHY)(L1)、数据链路层(L2)和网络层(L3)。其中，L1主要用于为高层业务提供数据传输的无线物理通道。L2包括媒体接入控制(Medium Access Control，MAC)、无线链路控制(Radio Link Control，RLC)、分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)以及服务数据适配协议(Service Data Adaptation Protocol，SDAP)四个子层。L3包括接入层的无线资源控制(Radio Resource Control，RRC)子层和非接入层(Non Access Stratum，NAS)的移动性管理(Mobility Management，MM)和呼叫控制(Call Control，CC)。
应用层实体：为通信装置中的一个协议层实体，可以称为应用层或者应用实体，主要用于生成应用(application，APP)消息或者通信业务对应的数据包等。
非接入(non-access stratum，NAS)层实体：为通信装置中的一个协议层实体，还可以称为NAS层或者NAS实体，主要用于处理终端和核心网设备间信息的传输， 传输的内容可以是用户信息或控制信息(如业务的建立、释放或者移动性管理信息)，NAS实体具有如下功能如下：会话管理(包括会话建立、修改、释放及QoS协商)、用户管理(包括用户数据管理以及附着、去附着等)安全管理(包括用户与网络之间的鉴权及加密初始化)以及计费等。
RRC层实体：为通信装置中的一个协议层实体，主要负责生成RRC消息、测量配置和上报，还可以负责其他功能：如发送专用的NAS消息、传输终端(user equipment，UE)接入能力信息等体现数据包/数据流服务质量的参数。
SDAP层实体：为通信装置中的一个协议层实体，还可以称为SDAP层或者SDAP实体，主要用于维护QoS参数与SLRB间的映射关系。示例性的，QoS参数可以为第五代(5th generation，5G)服务质量标识(5G QoS identifier，5QI)或者服务质量流标识(QoS flow identifier，QFI)或者近距通信数据包优先级(prose per packet priority，PPPP)或者近距通信数据包可靠性(prose per packet reliability，PPPR)等。
PDCP层实体：为通信装置中的一个协议层实体，还可以称为PDCP层或者PDCP实体，主要对来自控制面的RRC消息和来自数据面的因特网协议(internet protocol，IP)包进行处理，其功能包括：头部压缩和解压缩、加密/解密、完整性保护、传输用户数据和控制面数据、重排序和重传处理等。每个PDCP层实体都有1个或2个对应的RLC层实体。
RLC层实体：为通信装置中的一个协议层实体，还可以称为RLC层或者RLC实体，主要负责分段/级联和重组RLC业务数据单元(service data unit，SDU)、通过自动重传请求(automatic repeat request，ARQ)来进行纠错、对RLC协议数据单元(protocol data unit，PDU)进行重排序、重复包检测、对RLC PDU进行重分段等。
MAC层实体：为通信装置中的一个协议层实体，还可以称为MAC层或者MAC实体，主要负责匹配逻辑信道和传输信道、将属于一个或不同的逻辑信道的多个MAC SDU复用到同一个MAC PDU上，并递交给PHY层实体、通过混合自动重传请求(hybrid automatic repeat request，HARQ)来进行纠错、调度处理、逻辑信道优先级处理、调度信息上报、随机接入过程处理等。
PHY层实体：为通信装置中的一个协议层实体，还可以称为PHY层实体或者PHY实体，可以为传输数据所需要的物理链路创建、维持、拆除，而提供具有机械的，电子的，功能的和规范的特性。简单的说，PHY层实体确保原始的数据可在各种物理媒体上传输。
广义的讲，信道是指发送端的信源信息经过L3、L2、L1层处理，通过无线环境到接收端，再经过接收端的L1、L2、L3层处理的整个过程。
进一步的，按照图1所示的不同层之间的处理过程，信道可以分为物理信道、传输信道和逻辑信道。物理信道是指物理层实际传输信息的信道，传输信道是物理层与MAC子层之间的信道，逻辑信道是MAC子层和RLC子层之间的信道，用于指示传输的信息是什么，根据传输的是控制信息还是业务信息，逻辑信道可以分为控制信道和业务信道。
其中，控制信道用于传输控制面信息，主要包括：
1.广播控制信道(Broadcast Control Channel，BCCH)：用于广播系统控制信息的 下行信道。
2.寻呼控制信道(Paging Control Channel，PCCH)：用于传输寻呼信息和系统信息变化通知的下行信道。
3.公共控制信道(Common Control Channel，CCCH)：用于在终端和网络之间还没有建立RRC连接时，发送控制信息。
4.专用控制信道(Dedicated Control Channel，DCCH)：用于在RRC连接建立之后，终端和网络之间发送一对一的专用控制信息。
业务信道用于传输用户面信息，包括：
5.专用业务信道(Dedicated Traffic Channel，DTCH)：专用于一个终端的点对点用户信息传输的信道，上下行链路中都有。
下行的传输信道，主要包括：
1.广播信道(Broadcast Channel，BCH)：通过广播的方式传输下行控制信息。
2.下行共享信道(Downlink Shared Channel，DL-SCH)：用于传输下行控制或者用户信息。
3.寻呼信道(Paging Channel，PCH)：用于传输寻呼信息。
上行的传输信道，主要包括：
4.上行共享信道(Uplink Shared Channel，UL-SCH)：用于传输上行控制或者用户信息。
5.随机接入信道(Random Access Channel，RACH)：用于传输随机接入前导码。
物理信道是指实际传输信号的通道。其中，上行的物理信道主要包括：物理上行控制信道(Physical uplink control channel，PUCCH)、物理上行共享信道(Physical uplink shared channel，PUSCH)、物理随机接入信道(Physical random-access channel，PRACH)。
下行的物理信道主要包括：物理下行控制信道(Physical downlink control channel，PDCCH)、物理下行共享信道(Physical downlink shared channel，PDSCH)、物理广播信道(Physical broadcast channel，PBCH)。
如图2所示，示出了逻辑信道与下行传输信道和下行物理信道之间存在的映射关系。
通信系统中的数据传输可以采用编码调制方案，如图3示出了发送端编码调制以及接收端解调译码的通信过程。具体的，发送端生成的原始信号经过信源编码处理、信道编码处理以及调制等过程后发送至接收端。接收端将接收到的数字信号经过解调处理、信道译码处理以及信源恢复等处理过程，可以得到目标信号。
其中，信源编码是指将复杂的信源信息如文字、声音、图像或视频等用数字信号来表示的过程，通过利用数据的相关性去掉冗余信息，将模拟信号转换成数字信号。不同的信源信息对应有不同的数字编码算法，如语音压缩编码、分类图像压缩编码以及多媒体压缩数据编码等。
信道编码是指根据预设算法，在待发送的数字序列中增加一部分冗余信息，从而使得编码后比特流的数字序列前后具有相关性或规律性。当接收端接收到的符号序列中有一些错误或丢失时，接收端可以利用数字序列之间的相关性或规律性发现存在的错误，可以借助冗余信息将发送的原始信息恢复出来，从而提高数据传输的可靠性。
目前常用的信道编码有循环冗余校验码、Turbo码、Polar码(极化码)等，具体的编码算法可以参照现有的相关技术介绍，本申请对此不做赘述。
数字信号在无线信道上传输，首先必须将基带信号变换到较高的频带上。高频振荡信号的振幅、频率和相位都可以携带数字信号信息。信源信息是含有直流分量和频率较低的交流分量的基带信号，不能在无线环境中直接传送。调制(也称射频调制)就是把低频信号经过处理转变为适合于无线传输的射频信号，通过改变射频载波信号的幅度、相位或者频率，来反映低频信号变化的过程。常用的调制方式有振幅键控ASK、频移键控FSK、绝对相移键控PSK等。
解调是指调制的逆处理，是将有用信息从射频信号中提取出来以便接收和处理的过程。解调处理用于恢复数字基带信号，可以采用相干解调或非相干解调还原数字基带信号。
信道译码是信道编码的逆处理，是指按一定规则进行解码，从解码过程中发现错误或纠正错误，提高通信系统的抗干扰能力。
信源恢复是信源编码的逆处理，用于解压缩或还原模拟信号。
接下来，对本申请实施例的实施环境和应用场景进行简单介绍。
结合图1所示，本申请实施例可以应用于5G、卫星通信等无线通信系统中，该通信系统可以包括网络设备和至少一个终端。
其中，网络设备具体可以为接入网(access network，AN)/无线接入网(radio access network，RAN)设备，还可以为由多个5G-AN/5G-RAN节点组成的设备，又可以为者基站(nodeB，NB)、演进型基站(evolution nodeB，eNB)、下一代基站(generation nodeB，gNB)、收发点(transmission receive point，TRP)、传输点(transmission point，TP)以及某种其它接入节点中的任一节点。本申请实施例中，用于实现无线接入网设备的功能的装置可以是无线接入网设备，也可以是能够支持无线接入网设备实现该功能的装置，例如芯片系统。在本申请实施例提供的技术方案中，以用于实现无线接入网设备的功能的装置是无线接入网设备为例描述本申请实施例提供的技术方案。
示例性的，无线通信系统通常由小区组成，每个小区包含一个基站(Base Station，BS)，基站向多个移动台(Mobile Station，MS)提供通信服务。其中基站包含基带单元(Baseband Unit，BBU)和远端射频单元(英文：Remote Radio Unit，RRU)。BBU和RRU可以放置在不同的地方，例如：RRU拉远，放置于高话务量的区域，BBU放置于中心机房。BBU和RRU也可以放置在同一机房。BBU和RRU也可以为一个机架下的不同部件。
另外，终端可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、车载终端、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、远程医疗(remote medical)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、5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备、车载单元(on-board unit，OBU)、车载盒子(也称为车载T-Box(telematics box))、 路边单元(Road Side Unit)、整车、智能驾驶车辆或者能够实现前述设备功能的装置或芯片等等。本申请的实施例对应用场景不做限定。
本申请中由终端实现的方法和步骤，也可以由可用于终端的部件(例如芯片或者电路)等实现。本申请中将终端及可设置于前述终端的部件(例如芯片或者电路)还可称为终端设备，或者UUE。
在本申请实施例中，终端或网络设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
需要说明的是，本申请实施例可以应用的无线通信系统包括但不限于：窄带物联网系统(Narrow Band-Internet of Things，NB-IoT)、全球移动通信系统(Global System for Mobile Communications，GSM)、增强型数据速率GSM演进系统(Enhanced Data rate for GSM Evolution，EDGE)、宽带码分多址系统(Wideband Code Division Multiple Access，WCDMA)、码分多址2000系统(Code Division Multiple Access，CDMA2000)、时分同步码分多址系统(Time Division-Synchronization Code Division Multiple Access，TD-SCDMA)，长期演进系统(Long Term Evolution，LTE)以及5G移动通信系统的三大应用场景增强移动宽带(Enhanced Mobile Broadband，eMBB)，高可靠和低延迟通信(Ultra-reliable and Low Latency Communications，URLLC)或大规模机器类型通信(Massive Machine Type Communication，mMTC)等场景。
可选的，本申请实施例中，发送设备与接收设备为相对概念，发送设备可以指发送数据包的设备，接收设备可以指接收数据包的设备。
可选的，在本申请实施例中，网络设备与终端之间进行数据传输的通信类型可以为单播通信、组播通信或广播通信，还可以为其他类型的通信。本申请实施例仅以单播通信为例进行说明，对于其他类型的通信可以借鉴本申请实施例提供的通信方法实现。
进一步的，图1的通信系统的各通信装置可以看做为图4所示通信装置或者包括图4所示通信装置的设备。图4为本申请实施例提供的一种通信装置400的组成示意图，该通信装置可以用于实现本申请实施例提供的通信方法。如图4所示，该通信装置400包括至少一个处理器401、通信线路402以及至少一个通信接口403；进一步的，还可以包括存储器404。示例性的，处理器401，存储器404以及通信接口403三者之间可以通过通信线路402连接。在本申请实施例中，至少一个可以是一个、两个、三个或者更多个，本申请实施例不做限制。
在本申请实施例中，处理器401可以是中央处理器(central processing unit，CPU)，通用处理器网络处理器(network processor，NP)、数字信号处理器(digital signal processing，DSP)、微处理器、微控制器、可编程逻辑器件(programmable logic device，PLD)或它们的任意组合。处理器还可以是其它任意具有处理功能的装置，例如电路、器件或软件模块。
在本申请实施例中，通信线路402可包括通路，用于在通信装置包括的部件之间传送信息。
在本申请实施例中，通信接口403用于与其他车辆或通信网络通信(如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等)。通信接口403可以是模块、电路、收发器或者任何能够实现通信的装置。
在本申请实施例中，存储器404可以是只读存储器(read-only memory，ROM)或可存储静态信息和/或指令的其他类型的静态存储设备，也可以是随机存取存储器(random access memory，RAM)或者可存储信息和/或指令的其他类型的动态存储设备，还可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者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。
一种可能的设计中，存储器404可以独立于处理器401存在，即存储器404可以为处理器401外部的存储器，此时，存储器404可以通过通信线路402与处理器401相连接，用于存储指令或者程序代码。处理器401调用并执行存储器404中存储的指令或程序代码时，能够实现本申请下述实施例提供的通信方法。又一种可能的设计中，存储器404也可以和处理器401集成在一起，即存储器404可以为处理器401的内部存储器，例如，该存储器404为高速缓存，可以用于暂存一些数据和/或指令信息等。
作为一种可实现方式，处理器401可以包括一个或多个CPU，例如图4中的CPU0和CPU1。作为另一种可实现方式，通信装置400可以包括多个处理器，例如图4中的处理器401和处理器407。作为再一种可实现方式，通信装置400还可以包括输出设备405和输入设备406。示例性地，输入设备406可以是麦克风或操作杆等设备，输出设备405可以是显示屏、扬声器(speaker)等设备。
下面结合附图，对本申请实施例提供的通信方法进行具体阐述。可选的，本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
可以理解的，本申请实施例中，终端和/或网络设备可以执行本申请实施例中的部分或全部操作，这些操作或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个操作可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。
图5为本申请实施例提供的一种基于反馈的自适应传输方法的流程图，如图5所示，该方法可以包括以下步骤。
S501：第二通信装置向第一通信装置发送第一消息。
其中，第一通信装置可以为上述的终端或者网络设备，第二通信装置可以为上述的网络设备或终端。当第一通信装置为终端，第二通信装置为网络设备时，第二通信装置向第一通信装置发送第一消息即是指下行传输数据。当第一通信装置为网络设备，第二通信装置为终端时，第二通信装置向第一通信装置发送第一消息即是指上行传输数据。本申请对此不做限定。
在一种实施方式中，第二通信装置可以通过前述的信源编码、信道编码以及调制等处理之后，得到第一消息对应的符号序列，然后通过物理信道传输该符号序列。
示例性的，本申请的下述实施例中仅以第一通信装置为终端，第二通信装置为网络设备作为示例，介绍本申请的实施方式，则网络设备可以通过物理下行控制信道PDCCH、物理下行共享信道PDSCH、或物理广播信道PBCH向终端发送第一消息。
在本申请的下述实施例中，为便于描述，将第一消息的发送方第二通信装置也称为发送端，将第一消息的接收方第一通信装置也称为接收端。
S502：第一通信装置接收第一消息，根据第一消息确定反馈信息。
第一通信装置接收来自第二通信装置的第一消息，具体的，第一通信装置在所述物理信道接收第一消息对应的的接收符号。其中，接收符号是指发送端即第二通信装置经过上述处理得到的符号序列，经过物理信道的传输添加噪声等干扰信息之后，接收端即第一通信装置所接收到的符号序列。本申请实施中将接收端接收的符号序列称为接收符号，以与发送端发送的符号序列进行区分。
在一种实施方式中，第一通信装置可以通过前述的解调、信道译码以及信源恢复等处理过程，得到第一消息承载的信息。
第一通信装置可以根据接收的第一消息确定反馈信息，其中，反馈信息用于指示第一消息的信道传输质量，反馈信息的长度与第一消息的传输质量相关。具体的，第一通信装置可以根据接收的第一消息确定反馈信息，主要需要确定反馈信息的长度(即数据量)，以及反馈信息的形式。下文将详细列出几种反馈信息的不同形式，此处不再赘述。
也就是说，接收端可以根据第一消息的接收情况，确定反馈信息的长度和形式并生成对应的反馈信息，用于向发送端指示发送端向接收端传输第一消息的信道传输质量，从而指导后续发送端传输数据，形成自适应反馈的通信系统。例如，发送端可以根据反馈信息得到重传数据包，或者调整后续发送数据包的信道参数等，以提升通信系统的传输性能。
在一种实施方式中，反馈信息的长度越长，对应的第一消息的传输质量越差；反知，反馈信息的长度越短，对应的第一消息的传输质量越好。从而，当第一消息的传输质量较差时，接收端可以通过较长的反馈信息来承载第一消息接收/译码情况或信道噪声情况，使得发送端可以根据反馈信息重传数据包，提高通信效率。若第一消息的传输质量较好时，则接收端可以通过较短的反馈信息(如1比特)反馈第一消息接收/译码情况(如指示成功译码)，使得发送端可以根据反馈信息继续进行新传(如不必重传或重传较少数据量)，节省信令开销并提高通信效率，从而实现基于实时的信道质量自适应的反馈系统，提高系统整体的通信质量和可靠性。
下面列举反馈信息的几种可能的实现方式。
在一种实施方式中，第一通信装置可以根据第一消息的接收符号得到反馈信息。也就是说，接收端可以根据接收符号(即接收到的符号序列)得到反馈信息。
其中，接收端根据接收符号得到的反馈信息至少包括以下的一种：反馈信息为第一消息对应的接收符号。也就是说，接收端将全部的接收符号作为反馈信息，反馈至发送端。或者，反馈信息为接收符号经过量化处理后的信息，即接收端获取接收符号之后，将接收符号经过量化处理后得到的信息作为反馈信息。或者，反馈信息为根据接收符号进行解调处理后得到的对数似然比(likelihood Rate，LLR)值。或者，反馈信息为根据LLR值得到的二进制向量，示例性的，基于反馈容量大小d以及LLR值得到反馈信息，其中，LLR幅值最小的d个比特位置位1，其余比特位置位0，得到的结果作为反馈信息。
在另一种实施方式中，第一通信装置可以对第一消息进行译码处理得到反馈信息。
其中，接收端根据接收符号得到的反馈信息至少包括以下的一种：反馈信息为根据第一消息得到的硬判决结果，例如，接收端将根据第一消息或接收符号进行信道译码恢复出来的二进制信息作为反馈信息。或者，反馈信息为根据第一消息进行译码处理得到的译码结果，即接收符号经过译码器的译码结果得到的二进制信息。示例性的，反馈信息还可以是上述的硬判决结果与译码器的译码结果的结合，即硬判决结果+译码结果，用于指示译码过程中不确定的位置。
或者，反馈信息还可以为根据第一消息进行译码处理得到的非二进制的指示信息，至少包括以下的一种：根据接收符号进行译码处理得到译码结果对应的指示信息，如ACK或NACK反馈，用于指示成功译码或译码失败。
或者，反馈信息为根据第一消息进行译码处理得到的译码结果与第一消息的接收符号的距离，例如，欧式距离。
或者，反馈信息为根据接收符号进行译码处理的中间结果得到的指示信息，例如，根据接收符号进行译码处理得到低密度奇偶校验码(Low Density Parity Check Code，LDPC)，将LDPC码每轮迭代的LLR均值作为反馈信息，或者，根据接收符号进行极化码译码(Polar code)，将Polar码的最小PM值超越某一门限的信息比特的索引(index)作为反馈信息。
在另一种实施方式中，第一通信装置可以将基于信道情况的指示信息作为反馈信息，即反馈信息包括信道质量指示信息。
其中，反馈信息包括以下信息中的至少一种：全局信道质量指示信息，或者，子块信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。接收端可以通过信道估计获取上述的对应信息。
相较于前述现有技术中的ACK或NACK反馈信息，本申请的实施例提出的上述反馈信息，通过增加反馈信息的比特位用来承载较多信息(或较复杂的信息)，用于指示传输信道的质量或者实时的噪声情况。从而发送端可以根据接收端的反馈信息确定实时的信道质量，调整后续传输数据包的参数；或者，根据反馈信息确定数据包丢失或译码错误的部分，从而确定重传数据包，以实现自适应反馈的通信系统，提升通信系统的传输性能。
在一种实施方式中，第一通信装置根据第一消息确定反馈信息，可以根据预设规 则确定反馈信息的长度或形式。例如，第一通信装置接收第一消息之后解码器进行译码，若译码正确率低于预设的第一阈值，则可以将前述第一消息对应的接收符号作为反馈信息。若译码正确率高于预设的第一阈值且第一预设的第二阈值，则可以将前述第一消息对应的接收符号经过量化处理后的信息作为反馈信息。本申请实施例中对确定反馈信息的具体规则不做具体限定，实际的实现中需结合通信装置自身的诸多性能以制定。
进一步的，在实际的数据传输场景中，由于发送端发送的不同数据包的实时信道状态不同，每个数据包对应的反馈信息不同，反馈信息的数据量(如信息长度)也可能不同，根据反馈信息所得到的重传数据包的数据量也可能不同，因此，接收端对每个数据包生成的反馈信息通常是不定长的反馈，不利于发送端识别和处理反馈信息。
为解决上述问题，本申请实施例中，可以通过将多个数据包对应的反馈信息进行联合反馈，从而可以降低接收端(是指反馈信息的接收端，即本申请前述的第一消息的发送端)数据处理的复杂度。如图6所示，接收端可以将数据包A、数据包B和数据包C对应的反馈信息一起发送至接收端。其中，每个数据对应的反馈信息的数据量(如信息长度)可能不同。
其中，多个数据包可以是同一通信装置在不同时隙接收的数据包，也可以是不同通信装置在相同时隙接收的数据包。
在一种实施方式中，接收端可以通过将同一个终端在不同时隙接收的数据包对应的反馈信息进行联合反馈。也就是说，反馈信息包括多个数据包对应的反馈信息，用于指示该终端接收第一消息以及第二消息等的信道传输质量，其中，第一消息与第二消息不同。
示例性的，如图7所示，第一消息对应于第一终端在时刻T1接收的数据包1，第二消息对应于第一终端在时刻T2接收的数据包2，时刻T1与时刻T2不同，第一终端可以将数据包1和数据包2对应的反馈信息联合发送至网络设备。
在另一种实施方式中，接收端还可以通过将不同终端在相同时隙接收的数据包对应的反馈信息进行联合反馈。也就是说，反馈信息包括多个数据包对应的反馈信息，用于指示不同终端接收第一消息以及第二消息等的信道传输质量，其中，第一消息与第二消息可以不同，也可以相同，例如，网络设备广播第一消息(即第二消息)，多个不同的终端可以在相同的时隙接收到该第一消息。
示例性的，如图7所示，第一终端在时刻T1接收数据1，第二终端在时刻T1接收的数据包3，第三终端在时刻T3接收数据包4。终端之间可以通过信息交互，由第一终端统一将数据包1、数据包3以及数据包4的反馈信息联合发送至网络设备。
S503：第一通信装置向第二通信装置发送反馈信息。
具体的，第一通信装置可以根据反馈信息的长度与逻辑信道的定义，确定用于传输反馈信息的反馈逻辑信道；然后根据逻辑信道与物理信道的映射关系，确定反馈逻辑信道对应的物理信道；通过物理信道发送反馈信息。
其中，所述用于传输反馈信息的反馈逻辑信道，可以复用现有的广播控制信道BCCH、专用控制信道DCCH，或者，专用业务信道DTCH；或者，还可以通过新定义一种反馈信道(feedback Channel，FCH)，专门用于传输反馈信息。
其中，在一种实施方式中，若复用现有的广播控制信道BCCH、专用控制信道DCCH或者专用业务信道DTCH来传输反馈信息，则反馈信息可以承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
在一种实施方式中，第一通信装置向第二通信装置发送反馈信息，具体可以包括：
1、第一通信装置的MAC实体根据反馈信息的长度与逻辑信道的定义，确定第一逻辑信道。
其中，第一逻辑信道为用于发送反馈信息的逻辑信道。
示例性的，若第一逻辑信道是复用前述现有的几种逻辑信道中的一个，例如，第一逻辑信道可以为广播控制信道BCCH、专用控制信道DCCH、专用业务信道DTCH，则可以在上述逻辑信道的定义中增加对于反馈信息的功能定义。
或者，第一逻辑信道还可以通过新定义一种逻辑信道来实现。
2、MAC实体为第一逻辑信道中的反馈信息分配传输资源。
3、PHY实体通过传输资源发送反馈信息。
也就是说，可以通过在现有的逻辑信道定义里面加入对反馈信息的定义，用于传输反馈信息。
例如，对于下行数据的反馈信息，即基于网络设备向终端发送的下行数据包得到的反馈信息，可以通过在广播控制信道BCCH、专用控制信道DCCH、专用业务信道DTCH中增加反馈信息的定义。
示例性的，在DCCH中增加关于反馈信息的定义，可以参考如下代码。
Figure PCTCN2022104238-appb-000001
示例性的，在BCCH中增加关于反馈信息的定义，可以参考如下代码。
Figure PCTCN2022104238-appb-000002
在另一种实施方式中，可以定义一种新的逻辑信道，如反馈信道FCH，专门用于传输反馈信息；并确定反馈信道FCH与传输信道的映射关系。
示例性的，如图8所示，逻辑信道除了前述的几种，还可以包括反馈信道FCH。其中，对于下行传输的反馈信息，即基于终端向网络设备发送的上行数据包得到的反馈信息，FCH对应的传输信道可以为BCH，或者，DL-SCH。若FCH与传输信道BCH相映射，则反馈信息承载的物理信道可以为PBCH；若FCH与传输信道DL-SCH相映射，则反馈信息承载的物理信道可以为PDSCH。
示例性的，可以将FCH-BCH-Messgae定义如下：
Figure PCTCN2022104238-appb-000003
在另一种实施例中，对于上行数据的反馈信息，即基于终端向网络设备发送的上行数据包得到的反馈信息，逻辑信道可以包括CCCH、DCCH、DTCH以及反馈信道FCH。其中，如图9所示，FCH对应的传输信道可以为UL-SCH，对应的物理信道可以为PUSCH。
示例性的，可以将FCH-UL-SCH-Messgae定义如下：
Figure PCTCN2022104238-appb-000004
Figure PCTCN2022104238-appb-000005
本申请的上述实施方式，提出一种基于反馈的自适应传输方法，具体通过丰富多种可能的反馈信息的形式与内容，以及定义反馈信息与逻辑信道的映射关系，如反馈信息承载于当前标准中已有的逻辑信道，或者，反馈信息可以承载于新定义的反馈信道，从而实现一种自适应反馈的通信系统，用于解决目前的通信系统不支持随噪声情况的自适应反馈的问题，有利于提升数据传输的效率，提升通信系统的整体性能。
基于前述的实施例，本申请还提供一种通信装置，用于实现前述实施例中第一通信装置执行的步骤。如图10所述，通信装置1000可以包括收发模块1001和处理模块1002。
其中，收发模块1001用于接收来自第二通信装置的第一消息。
处理模块1002用于根据第一消息确定反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关。
收发模块1001还用于向所述第二通信装置发送所述反馈信息。
在一种实施方式中，处理模块1002还用于：根据所述反馈信息的长度，确定用于传输所述反馈信息的逻辑信道；根据逻辑信道与物理信道的映射关系，确定所述逻辑信道对应的物理信道。
收发模块1001还用于通过所述物理信道发送所述反馈信息。
在一种实施方式中，反馈信息是根据所述第一消息的接收符号得到的，其中，所述反馈信息包括以下数据中的至少一种：所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
在一种实施方式中，反馈信息是根据对所述第一消息进行译码处理得到的，其中，所述反馈信息包括以下数据中的至少一种：根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
在一种实施方式中，反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
在一种实施方式中，反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
在一种实施方式中，反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
在一种实施方式中，逻辑信道为广播控制信道BCCH、专用控制信道DCCH、专用业务信道DTCH或者反馈信道FCH。
在一种实施方式中，第一消息的传输质量越差，所述反馈信息的长度越长。
另外，本申请还提供一种通信装置，用于实现前述实施例中第二通信装置执行的步骤。如图10所述，通信装置1000可以包括收发模块1001。
收发模块1001用于向第一通信装置发送第一消息。
收发模块1001还用于接收来自所述第一通信装置的反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关。
在一种实施方式中，反馈信息包括以下数据中的至少一种：所述第一通信装置接收到的所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
在一种实施方式中，反馈信息包括以下数据中的至少一种：根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
在一种实施方式中，反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
在一种实施方式中，反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
在一种实施方式中，反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
在一种实施方式中，第一消息的传输质量越差，所述反馈信息的长度越长。
可以理解的，本申请实施例中同一个步骤或者具有相同功能的步骤或者消息在不同实施例之间可以互相参考借鉴。
基于上述的各实施方式，本申请还提供一种通信装置，该通信装置可以是图4所示的终端设备或者网络设备。该通信装置具有实现上述各个可能的实施方式中的第一通信装置或第二通信装置的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
可以理解的，结合图4所示，当上述装置是电子设备时，上述的传输模块可以是收发器，可以包括天线和射频电路等，处理模块可以是处理器，例如基带芯片等。当该装置是具有上述实施例中的第一通信装置和/或第二通信装置功能的部件时，传输模块可以是射频单元，处理模块可以是处理器。当装置是芯片系统时，传输模块可以是芯片系统的输入接口和/或输出接口，处理模块可以是芯片系统的处理器，例如：中央处理单元(central processing unit，CPU)。
需要说明的是，上述装置中具体的执行过程和实施例可以参照上述方法实施例中第一通信装置或第二通信装置执行的步骤和相关的描述，所解决的技术问题和带来的 技术效果也可以参照前述实施例所述的内容，此处不再一一赘述。
在本实施例中，该侧行链路的传输装置以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定电路、执行一个或多个软件或固件程序的处理器和存储器、集成逻辑电路、和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置可以采用如前述中的图4所示的形式。
示例性的，图10中的处理模块1002等的功能/实现过程可以通过图4中的处理器401调用存储器404中存储的计算机程序指令来实现。例如，图10中收发模块1001等的功能/实现过程可以通过图4中的通信接口403。
在一些实施方式中，图4中的处理器401可以通过调用存储器404中存储的计算机执行指令，使得装置400可以执行上述各个方法实施例中的第一通信装置或第二通信装置的操作，实现本申请的上述各个可能的实施方法。
上述各个装置实施例中的通信装置可以与方法实施例中的第一通信装置或第二通信装置完全对应，由相应的模块或者单元执行相应的步骤，例如，当该装置以芯片的方式实现时，该收发模块可以是该芯片用于从其他芯片或者装置接收信号的接口电路。以上用于发送或接收的收发模块是一种该装置的接口电路，用于向其他装置发送信号，例如，当该装置以芯片的方式实现时，该收发模块可以是用于向其他芯片或者装置发送信号的接口电路。
在示例性实施例中，还提供了一种包括指令的计算机可读存储介质，或者计算机程序产品，上述指令可由通信装置400的处理器401执行以完成上述实施例的方法。因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
本申请还提供了一种计算机程序产品，该计算机程序产品包括指令，当该指令被执行时，以使得该计算机分别可以执行对应于上述方法的终端设备或者网络设备的操作。
本申请实施例还提供了一种系统芯片，该系统芯片包括：处理单元和通信单元，该处理单元，例如可以是处理器，该通信单元例如可以是输入/输出接口、管脚或电路等。该处理单元可执行计算机指令，以使该芯片所应用的通信装置执行上述本申请实施例提供的方法中的终端设备和网络设备的操作。
可选地，上述本申请实施例中提供的任意一种通信装置可以包括该系统芯片。
可选地，该计算机指令被存储在存储单元中。
本申请实施例还提供了一种通信系统，该通信系统可以包括：上述的实施方式中的任一种的第一通信装置和第二通信装置。
在上述实施例中，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。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该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计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的 公知常识或惯用技术手段。
最后应说明的是：以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (32)

  1. 一种基于反馈的自适应传输方法，其特征在于，应用于第一通信装置，所述方法包括：
    接收来自第二通信装置的第一消息；
    根据所述第一消息确定反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关；
    向所述第二通信装置发送所述反馈信息。
  2. 根据权利要求1所述的方法，其特征在于，向所述第二通信装置发送所述反馈信息，具体包括：
    根据所述反馈信息的长度，确定用于传输所述反馈信息的反馈逻辑信道；
    根据逻辑信道与物理信道的映射关系，确定所述反馈逻辑信道对应的物理信道；
    通过所述物理信道发送所述反馈信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述反馈信息是根据所述第一消息的接收符号得到的，其中，所述反馈信息包括以下数据中的至少一种：
    所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
  4. 根据权利要求1或2所述的方法，其特征在于，所述反馈信息是根据对所述第一消息进行译码处理得到的，其中，所述反馈信息包括以下数据中的至少一种：
    根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
  5. 根据权利要求1或2所述的方法，其特征在于，所述反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：
    全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
  8. 根据权利要求2所述的方法，其特征在于，所述反馈逻辑信道为广播控制信道BCCH、专用控制信道DCCH、专用业务信道DTCH或者反馈信道FCH。
  9. 一种基于反馈的自适应传输方法，其特征在于，应用于第二通信装置，所述方法包括：
    向第一通信装置发送第一消息；
    接收来自所述第一通信装置的反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关。
  10. 根据权利要求9所述的方法，其特征在于，所述反馈信息包括以下数据中的至少一种：
    所述第一通信装置接收到的所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
  11. 根据权利要求9所述的方法，其特征在于，所述反馈信息包括以下数据中的至少一种：
    根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
  12. 根据权利要求9所述的方法，其特征在于，所述反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：
    全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
  13. 根据权利要求9-12任一项所述的方法，其特征在于，所述反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
  14. 根据权利要求9-13任一项所述的方法，其特征在于，所述反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
  15. 一种通信装置，其特征在于，所述装置包括：
    收发模块，用于接收来自第二通信装置的第一消息；
    处理模块，用于根据所述第一消息确定反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关；
    所述收发模块，还用于向所述第二通信装置发送所述反馈信息。
  16. 根据权利要求15所述的装置，其特征在于，所述处理模块，还用于：
    根据所述反馈信息的长度，确定用于传输所述反馈信息的逻辑信道；
    根据逻辑信道与物理信道的映射关系，确定所述逻辑信道对应的物理信道；
    所述收发模块，还用于通过所述物理信道发送所述反馈信息。
  17. 根据权利要求15或16所述的装置，其特征在于，所述反馈信息是根据所述第一消息的接收符号得到的，其中，所述反馈信息包括以下数据中的至少一种：
    所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
  18. 根据权利要求15或16所述的装置，其特征在于，所述反馈信息是根据对所述第一消息进行译码处理得到的，其中，所述反馈信息包括以下数据中的至少一种：
    根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
  19. 根据权利要求15或16所述的装置，其特征在于，所述反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：
    全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
  20. 根据权利要求15-19任一项所述的装置，其特征在于，所述反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
  21. 根据权利要求15-20任一项所述的装置，其特征在于，所述反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
  22. 根据权利要求16所述的方法，其特征在于，所述逻辑信道为广播控制信道BCCH、专用控制信道DCCH、专用业务信道DTCH或者反馈信道FCH。
  23. 一种通信装置，其特征在于，所述装置包括：
    收发模块，用于向第一通信装置发送第一消息；
    所述收发模块，还用于接收来自所述第一通信装置的反馈信息，所述反馈信息用于指示所述第一消息的传输质量，所述反馈信息的长度与所述第一消息的传输质量相关。
  24. 根据权利要求23所述的装置，其特征在于，所述反馈信息包括以下数据中的至少一种：
    所述第一通信装置接收到的所述第一消息对应的接收符号，或者，所述接收符号经过量化处理后的信息，或者，根据所述接收符号进行解调处理得到的对数似然比LLR值，或者，根据所述LLR值得到的二进制向量。
  25. 根据权利要求23所述的装置，其特征在于，所述反馈信息包括以下数据中的至少一种：
    根据所述第一消息得到的硬判决结果，或者，根据所述第一消息进行译码处理得到的译码结果，或者，根据所述第一消息进行译码处理得到的中间结果或译码结果对应的指示信息，或者，所述译码结果与所述第一消息对应的接收符号的距离。
  26. 根据权利要求23所述的装置，其特征在于，所述反馈信息包括传输所述第一消息的信道质量的指示信息，其中，所述反馈信息包括以下数据中的至少一种：
    全局的信道质量指示信息，或者，子块的信道质量指示信息，或者，基于子块的信道质量指示信息，或者，子块的信道干扰参数信息。
  27. 根据权利要求23-26任一项所述的装置，其特征在于，所述反馈信息还用于指示第二消息的信道传输质量，其中，所述第二消息与所述第一消息相同或者不同。
  28. 根据权利要求23-27任一项所述的装置，其特征在于，所述反馈信息承载于物理广播信道PBCH，或者，物理下行共享信道PDSCH。
  29. 一种通信装置，其特征在于，所述通信装置包括处理器与传输接口；
    其中，所述处理器被配置为执行存储在存储器中的指令，以使得所述装置执行如权利要求1至14中任一项所述的方法。
  30. 一种计算机可读存储介质，其特征在于，包括程序或指令，当所述程序或指令被处理器运行时，如权利要求1至14中任意一项所述的方法被执行。
  31. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机或处理器上运行时，使得所述计算机或所述处理器执行如权利要求1至14中任一项所述的方法。
  32. 一种通信系统，其特征在于，所述通信系统包括如权利要求15至22中任一项所述的通信装置，以及如权利要求23至28中任一项所述的通信装置。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101965704A (zh) * 2008-01-11 2011-02-02 爱立信电话股份有限公司 具有不等差错保护的反馈
CN108809496A (zh) * 2017-05-05 2018-11-13 华为技术有限公司 一种信息处理方法以及设备
WO2021236376A1 (en) * 2020-05-21 2021-11-25 Kyocera Corporation Hybrid automatic repeat request (harq) feedback management based on location information availability and sidelink signal quality for group sidelink communication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101965704A (zh) * 2008-01-11 2011-02-02 爱立信电话股份有限公司 具有不等差错保护的反馈
CN108809496A (zh) * 2017-05-05 2018-11-13 华为技术有限公司 一种信息处理方法以及设备
WO2021236376A1 (en) * 2020-05-21 2021-11-25 Kyocera Corporation Hybrid automatic repeat request (harq) feedback management based on location information availability and sidelink signal quality for group sidelink communication

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