WO2025241925A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置

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Publication number
WO2025241925A1
WO2025241925A1 PCT/CN2025/094287 CN2025094287W WO2025241925A1 WO 2025241925 A1 WO2025241925 A1 WO 2025241925A1 CN 2025094287 W CN2025094287 W CN 2025094287W WO 2025241925 A1 WO2025241925 A1 WO 2025241925A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressed
data
priority
information
mapping relationship
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/094287
Other languages
English (en)
French (fr)
Inventor
马赫
马梦瑶
李佳徽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2025241925A1 publication Critical patent/WO2025241925A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
    • H04L47/2433—Allocation of priorities to traffic types
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/38—Flow control; Congestion control by adapting coding or compression rate

Definitions

  • This application relates to the field of wireless communication, and more particularly to a data transmission method and apparatus.
  • This application provides a data transmission method and apparatus for developing reasonable and efficient compression strategies for different types of data, thereby improving data transmission efficiency.
  • this application provides a data transmission method, the method being used in a first device, comprising: acquiring a first mapping relationship and first data to be compressed; compressing the first data to be compressed based on the first mapping relationship to obtain a first compressed bitstream; outputting first information to a second device, the first information including the first compressed bitstream; acquiring second data to be compressed and a second mapping relationship; compressing the second data to be compressed based on the second mapping relationship to obtain a second compressed bitstream; and outputting second information to the second device, the second information including the second compressed bitstream; wherein the first data to be compressed and the second data to be compressed include multipath data and/or non-multipath data; the first mapping relationship indicates a first priority portion of the first data to be compressed; the second mapping relationship indicates a first priority portion of the second data to be compressed; wherein the first priority portion of the first data to be compressed corresponds to a first compression precision of the first data to be compressed, and the first priority portion of the second data to be compressed corresponds to a first
  • the method further includes: outputting first information to a third device, the first information including the first compressed bitstream; acquiring third data to be compressed and a third mapping relationship; compressing the third data to be compressed based on the third mapping relationship to obtain a third compressed bitstream; outputting third information to the third device, the third information including the third compressed bitstream; wherein the third data to be compressed includes multipath data and/or non-multipath data; the third mapping relationship indicates a first priority portion of the third data to be compressed; the first priority portion of the third data to be compressed corresponds to a first compression precision of the third data to be compressed.
  • the same compression strategy is used to compress and output the same part of the information that each receiving device needs to acquire (e.g., basic information part or coarse-grained part), while the specific compression strategy is used to compress and output the different parts of the information that each receiving device needs to acquire (e.g., incremental information part or fine-grained part), thereby improving transmission efficiency.
  • the first mapping relationship further indicates a second priority portion of the first data to be compressed; and/or, the second mapping relationship further indicates a second priority portion of the second data to be compressed; and/or, the third mapping relationship further indicates a second priority portion of the third data to be compressed; wherein, the second priority portion of the first data to be compressed corresponds to a second compression precision of the first data to be compressed; the second priority portion of the second data to be compressed corresponds to a second compression precision of the second data to be compressed; the second priority portion of the third data to be compressed corresponds to a second compression precision of the third data to be compressed; the first compression precision of the first data to be compressed is higher than the second compression precision of the first data to be compressed; the first compression precision of the second data to be compressed is higher than the second compression precision of the second data to be compressed; and the first compression precision of the third data to be compressed is higher than the second compression precision of the third data to be compressed.
  • the second mapping relationship, the third mapping relationship, and the first mapping relationship may be the same or different.
  • obtaining the second mapping relationship and/or the third mapping relationship specifically includes: obtaining feedback information from the second device and obtaining the second mapping relationship based on the feedback information; and/or obtaining feedback information from the third device and obtaining the third mapping relationship based on the feedback information.
  • a corresponding mapping relationship can be generated based on the feedback information of the corresponding device, thereby providing a more practical compression strategy according to actual needs, making the compression strategy dynamically adjustable.
  • the feedback information obtained from the second device includes: the mapping relationship corresponding to the second data to be compressed; and/or, region indication information; the feedback information obtained from the third device includes: the mapping relationship corresponding to the third data to be compressed; and/or, region indication information.
  • the area indication information in the feedback information obtained from the second device includes any one or more of the following: geographic information, coordinate information, pattern indication, and index information in the second data to be compressed;
  • the area indication information in the feedback information obtained from the third device includes any one or more of the following: geographic information, coordinate information, pattern indication, and index information in the third data to be compressed.
  • obtaining the second data to be compressed includes: obtaining the second data to be compressed based on feedback information from the second device; obtaining the third data to be compressed includes: obtaining the third data to be compressed based on feedback information from the third device.
  • the first data to be compressed, the second data to be compressed, and the third data to be compressed are acquired simultaneously or not simultaneously.
  • the compressed bitstreams corresponding to different priority portions of the data to be compressed are transmitted at different times.
  • the transmission of compressed bitstreams corresponding to different priority portions of the data to be compressed in different time sequences specifically includes: transmitting the compressed bitstreams corresponding to the high priority portions first, followed by transmitting the compressed bitstreams corresponding to the lower priority portions; or, transmitting the compressed bitstreams corresponding to the lower priority portions first, followed by transmitting the compressed bitstreams corresponding to the high priority portions.
  • the transmission of compressed bitstreams corresponding to different priority portions of the data to be compressed at different times specifically includes: the first information further includes a first priority identifier, which is used to indicate the transmission priority of the first compressed bitstream; and/or, the second information further includes a second priority identifier, which is used to indicate the transmission priority of the second compressed bitstream; and/or, the third information further includes a third priority identifier, which is used to indicate the transmission priority of the third compressed bitstream.
  • the method further includes: merging and outputting compressed bitstreams with different priority identifiers; wherein the priority identifiers indicate merging or separation.
  • the compressed bitstream is output in a single output and contains compressed bitstreams with different priority identifiers; or, the compressed bitstream is output in multiple outputs and each output contains compressed bitstreams with different priority identifiers.
  • the method further includes: the first information containing the first mapping relationship; and/or, the second information containing the second mapping relationship; and/or, the third information containing the third mapping relationship.
  • the first mapping relationship further indicates a third priority portion of the first data to be compressed; and/or, the second mapping relationship further indicates a third priority portion of the second data to be compressed; and/or, the third mapping relationship further indicates a third priority portion of the third data to be compressed; wherein, the third priority portion of the first data to be compressed corresponds to a third compression precision of the first data to be compressed; the third priority portion of the second data to be compressed corresponds to a third compression precision of the second data to be compressed; and the third priority portion of the third data to be compressed corresponds to a third compression precision of the third data to be compressed.
  • the method further includes: specifying time-frequency resources during the first transmission of the second compressed bitstream; or, specifying them according to upper-layer signaling or DCI; specifying time-frequency resources during the first transmission of the third compressed bitstream; or, specifying them according to upper-layer signaling or DCI.
  • the method further includes outputting information in any one or more of the following forms: unicast, multicast, and broadcast.
  • the second aspect is the method corresponding to the first aspect, and the beneficial effects are described in the first aspect;
  • this application provides a data transmission method, the method being used in a second device, comprising:
  • First information is obtained, the first information including a first compressed bitstream; the first compressed bitstream is obtained by a first device compressing first data to be compressed based on a first mapping relationship; second information is obtained, the second information including a second compressed bitstream; the second compressed bitstream is obtained by a first device compressing second data to be compressed based on a second mapping relationship; wherein, the first data to be compressed and the second data to be compressed include multipath data and/or non-multipath data; the first mapping relationship indicates a first priority portion of the first data to be compressed; the second mapping relationship indicates a first priority portion of the second data to be compressed; wherein, the first priority portion of the first data to be compressed corresponds to a first compression precision of the first data to be compressed, and the first priority portion of the second data to be compressed corresponds to a first compression precision of the second data to be compressed; the corresponding compressed bitstream is decompressed based on the corresponding mapping relationship.
  • the first mapping relationship further indicates a second priority portion of the first data to be compressed; and/or, the second mapping relationship further indicates a second priority portion of the second data to be compressed; wherein, the second priority portion of the first data to be compressed corresponds to a second compression precision of the first data to be compressed; the second priority portion of the second data to be compressed corresponds to a second compression precision of the second data to be compressed; the first compression precision of the first data to be compressed is higher than the second compression precision of the first data to be compressed; and the first compression precision of the second data to be compressed is higher than the second compression precision of the second data to be compressed.
  • the second mapping relationship may be the same as or different from the first mapping relationship.
  • the method further includes: outputting feedback information to the first device so that the first device obtains the second mapping relationship based on the feedback information.
  • the feedback information specifically includes: the mapping relationship corresponding to the second data to be compressed; and/or, region indication information.
  • the area indication information includes any one or more of the following: geographic information, coordinate information, pattern indication, and index information in the second data to be compressed.
  • the first data to be compressed and the second data to be compressed are acquired by the first device simultaneously or at different times.
  • the compressed bitstreams corresponding to different priority portions of the data to be compressed are transmitted at different times.
  • the transmission of compressed bitstreams corresponding to different priority portions of the data to be compressed in different time sequences specifically includes: the first information further includes a first priority identifier, which is used to indicate the transmission priority of the first compressed bitstream; and/or, the second information further includes a second priority identifier, which is used to indicate the transmission priority of the second compressed bitstream.
  • the method further includes: merging and transmitting compressed bitstreams with different priority identifiers; wherein the priority identifiers indicate merging or separation.
  • the compressed bitstream is output in a single output and contains compressed bitstreams with different priority identifiers; or, the compressed bitstream is output in multiple outputs and each output contains compressed bitstreams with different priority identifiers.
  • the method further includes: the first information containing the first mapping relationship; and/or, the second information containing the second mapping relationship.
  • the first mapping relationship further indicates a third priority portion of the first data to be compressed; and/or, the second mapping relationship further indicates a third priority portion of the second data to be compressed; wherein the third priority portion of the first data to be compressed corresponds to a third compression precision of the first data to be compressed; and the third priority portion of the second data to be compressed corresponds to a third compression precision of the second data to be compressed.
  • the method further includes: specifying time-frequency resources during the first transmission of the second compressed bitstream; or, specifying them according to upper-layer signaling or DCI.
  • this application provides a communication device, comprising: a processor for executing a computer program or instructions stored in a memory; the memory for storing the computer program or instructions; and when the computer program or instructions are run by the processor, the method described in the first or second aspect is implemented.
  • this application provides a computer-readable storage medium storing a computer program or instructions such that when a computer runs the computer program or instructions, the methods in the first or second aspect described above are implemented.
  • this application provides a computer program product comprising methods for performing the methods described in the first or second aspect above.
  • this application provides a communication system, the system comprising a first device and a second device; the first device is used to implement the method in the first aspect described above; the second device is used to implement the method in the second aspect described above.
  • Figure 1 shows a schematic diagram of a possible communication system architecture provided in this application
  • Figure 2 is a schematic diagram of possible implementation scenarios provided in this application.
  • Figure 3 is a schematic diagram of a possible electromagnetic map provided in this application.
  • FIG. 4 is a flowchart of a data transmission method provided in this application.
  • Figure 5 shows a schematic diagram of a possible native data structure provided in this application
  • FIGS 6A-6E show possible data transmission structures provided in this application.
  • Figure 7 is a schematic diagram of a possible priority identifier transmission format provided in this application.
  • Figure 8 shows the transmission flowchart when the mapping relationship between the basic information part and the incremental information part is the same in this application.
  • FIG. 9 is a flowchart of a possible incremental information acquisition method provided in this application.
  • Figure 10 shows the transmission flowchart when the mapping relationship between the basic information part and the incremental information part is different in this application.
  • Figure 11 shows a flowchart of the transmission of information from the second device and/or the third device to the first device in this application.
  • FIGS 12A and 12B show possible flowcharts for compressing raw data provided in this application
  • Figure 13 shows a schematic diagram of a possible communication device structure provided in this application.
  • Figure 14 shows a schematic diagram of another possible communication device structure provided in this application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • NR new radio
  • 6G ultra-wideband
  • WiFi wireless fidelity
  • Figure 1 illustrates a possible, non-limiting system diagram.
  • the communication system 1000 includes a wireless access network 100 and a core network 200.
  • the communication system 1000 may also include an Internet 300.
  • the wireless access network 100 may include at least one wireless access network device (110a and 110b in Figure 1) and at least one terminal (120a-120j in Figure 1).
  • the terminal connects wirelessly to the wireless access network device, and the wireless access network device connects wirelessly or via a wired connection to the core network.
  • the core network device and the wireless access network device can be independent physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated into the same physical device, or a single physical device can integrate some of the functions of the core network device and some of the functions of the wireless access network device.
  • Terminals can be interconnected with each other, and wireless access network devices can be interconnected via wired or wireless connections.
  • Figure 1 is only a schematic diagram; the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1.
  • Radio access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6th-generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system.
  • Radio access network equipment can also be an open RAN (O-RAN or ORAN) or a cloud radio access network (CRAN).
  • Radio access network equipment can also be a communication system integrating two or more of the above systems.
  • Radio access network equipment can be a macro base station (as shown in Figure 1, 110a), a micro base station or an indoor station (as shown in Figure 1, 110b), a relay node, or a donor node, etc.
  • the wireless access network equipment can also be a module or unit that performs some of the functions of a base station.
  • a base station can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU).
  • CU or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning.
  • CU can also be called O-CU (open CU)
  • DU can also be called O-DU
  • CU-CP can also be called O-CU-CP
  • CU-UP can also be called O-CU-UP
  • RU can also be called O-RU.
  • this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.
  • a base station is used as an example of a wireless access network equipment in the following description. It is understood that a base station can be referred to as a communication device.
  • a base station can be understood as a device with base station functions.
  • the device used to implement the functions of a base station can be a base station; or some components in a base station, such as CU, DU, etc. It can also be a device that can support the base station in implementing this function, such as a chip system, hardware circuit, software module, or hardware circuit plus software module, which can be installed in a base station or can be used in conjunction with a base station.
  • the chip system can be composed of chips or can include chips and other discrete devices.
  • a terminal can also be called a terminal device, user equipment (UE), mobile station, mobile terminal, etc.
  • Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc.
  • Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.
  • a terminal can be referred to as a communication device.
  • a terminal can be understood as a device with terminal functions.
  • the device used to implement the terminal functions can be a terminal itself; it can also be a device capable of supporting the terminal in implementing those functions, such as a chip system, hardware circuit, software module, or hardware circuit plus software module. This device can be installed in the terminal or can be used in conjunction with the terminal.
  • Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.
  • base stations and terminals can be relative.
  • the helicopter or drone 120i in Figure 1 can be configured as a mobile base station.
  • drone 120i For terminals 120j that access the wireless access network 100 through 120i, drone 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol.
  • 110a and 120i can also communicate via a base station-to-base station interface protocol.
  • relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices.
  • 110a and 110b in Figure 1 can be called communication devices with base station functions
  • 120a-120j in Figure 1 can be called communication devices with terminal functions.
  • Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously.
  • the embodiments of this application do not limit the spectrum resources used for wireless communication.
  • first device and “second device” are used as the main entities for description.
  • first device can be understood as a base station, a device with base station functions, or a device that implements base station functions.
  • the first device is a base station, or it can be a module (e.g., a chip or circuit) within a base station, or it can be a module or unit (e.g., CU, DU, or RU) that fully or partially implements base station functions, a logic module, or software.
  • first device can be understood as a device or apparatus with sensing capabilities, or a device or apparatus capable of performing artificial intelligence tasks.
  • a device with sensing capabilities can be called a sensing device, and a device capable of performing artificial intelligence tasks can be called an artificial intelligence task execution device.
  • “Second device” can be understood as a terminal, a device with terminal functions, or a device that implements terminal functions.
  • the second device is a terminal, or the second device can be a module (e.g., a chip or circuit) within a terminal.
  • “second device” can be understood as a device or apparatus with sensing capabilities, or a device or apparatus capable of performing artificial intelligence tasks.
  • a device with sensing capabilities can be called a sensing device
  • a device capable of performing artificial intelligence tasks can be called an artificial intelligence task execution device.
  • “Third device” can be understood as a terminal, a device with terminal functions, or a device that implements terminal functions.
  • the third device is a terminal, or the third device can be a module (e.g., a chip or circuit) within a terminal.
  • “third device” can be understood as a device or apparatus with sensing capabilities, or a device or apparatus capable of performing artificial intelligence tasks.
  • a device with sensing capabilities can be called a sensing device
  • a device capable of performing artificial intelligence tasks can be called an artificial intelligence task execution device.
  • first device can be replaced by “first equipment” or “first communication device”
  • second device can be replaced by “second equipment” or “second communication device”
  • third device can be replaced by "third equipment” or “third communication device”.
  • the "first device” can be a "base station”
  • the "second device” can be a “terminal”
  • the "third device” can be a "terminal.”
  • one or more terminals can communicate with the base station separately.
  • the interface between the terminal and the base station is a Uu interface.
  • “send” and “receive” indicate the direction of signal transmission.
  • “send information to XX” can be understood as the destination of the information being XX, and “send information” can include direct transmission or indirect transmission through other units or modules.
  • “Receive information from YY” can be understood as the source of the information being YY, and “receive information” can include direct reception from YY or indirect reception from YY through other units or modules.
  • “send” can also be understood as the "output” of a chip interface, and “receive” can be understood as the "input” of a chip interface.
  • “send” or “receive” can occur between devices, such as a base station and a terminal transmitting or receiving data via an air interface. “Send” or “receive” can also occur within a device, such as transmitting or receiving data between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.
  • the Unequal Compression (UEC) multi-level mapping table is referred to simply as a mapping table, a multi-level mapping table, or a UEC mapping table. This is merely a form of expression and does not affect the scope it refers to. Furthermore, the mapping table in this application indicates the mapping relationship between the raw data (or the data to be compressed) and the compressed bitstream; that is, the mapping table is actually represented by the mapping relationship.
  • future wireless communication systems will generate a significant amount of data tailored to these new scenarios, creating new demands for data transmission.
  • new application scenarios such as ISAC, AI-enabled wireless technologies, and terahertz communication will generate massive amounts of data and signaling. Therefore, future radio access network systems may contain various data types, requiring the transmission of different data types under different scenarios or tasks.
  • Raw data can be understood as data derived from emerging application scenarios in future wireless communication systems (such as 6G), especially Radio Access Network (RAN) data that requires air interface transmission, or local traffic generated within the RAN.
  • Raw data can be simply referred to as data.
  • Raw data can include various data types (and possible data subtypes), such as sensing data, artificial intelligence data, or channel data.
  • raw data or raw data types may include at least one of the following, but are not limited to, the following examples:
  • the first type is perception data, such as 2D or 3D imaging data (e.g., acquired environmental reflection points, environmental patches), environmental reconstruction data, point cloud data, electromagnetic maps, or positioning data, etc.
  • perception data such as 2D or 3D imaging data (e.g., acquired environmental reflection points, environmental patches), environmental reconstruction data, point cloud data, electromagnetic maps, or positioning data, etc.
  • the second type is artificial intelligence data or edge artificial intelligence data, such as AI model data, training data, gradient data, gradient update data, inference results, feature information extracted by neural networks, performance data, etc.
  • the third type is channel data, such as channel matrix, channel information fed back by devices in a multi-antenna system, and channel status information (CSI) data.
  • channel data such as channel matrix, channel information fed back by devices in a multi-antenna system, and channel status information (CSI) data.
  • CSI channel status information
  • an electromagnetic map is installed in the access network equipment.
  • the access network equipment can create an electromagnetic map through methods such as field measurements, environmental modeling with ray tracing (RT), or artificial intelligence (AI).
  • the electromagnetic map is used to characterize the distribution of electromagnetic signals in the environment; it records the intensity and characteristics of various electromagnetic signals within a specific area.
  • an electromagnetic map may include, but is not limited to, some or all, information on multipath propagation, noise levels, and spectrum occupancy at one or more locations.
  • an electromagnetic map may include information on regular and/or irregular regions, with each region corresponding to one or more reference points. Regular regions may also be called grid regions, and the reference points corresponding to grid regions may be called grids or grid points, etc.
  • the information in different regions of the electromagnetic map may include multipath data and/or non-multipath data.
  • Multipath data can have the following information in each region (e.g., a reference point):
  • Multipath information may include information such as the amplitude, delay and/or angle of the multipath.
  • Information about non-multipath data in each region can take the following form:
  • the scalar intensity identifiers or scattering point information characterizing the electromagnetic properties in the electromagnetic map may include at least one of the following specific information: channel impulse response (CIR), channel quality indicator (CQI), power delay profile (PDP), angle delay profile (ADP), or information on the virtual anchor of the scattering point/virtual station.
  • CIR channel impulse response
  • CQI channel quality indicator
  • PDP power delay profile
  • ADP angle delay profile
  • the electromagnetic map on the access network device side Each reference point corresponds to at least one geographical region, representing the multipath information from access network devices to terminals within that region.
  • the electromagnetic map... Mainly includes:
  • Electromagnetic map elements with N reference points N is an integer greater than zero.
  • Electromagnetic map elements for each reference point This includes multipath information for M n paths between the access network device and the reference point, where M n is a positive integer.
  • Multipath information for each path can include amplitude, delay, and angle.
  • Amplitude can exist in the form of signal amplitude or power. If the access network equipment uses a dual-polarized antenna, the amplitude is a 2x2 matrix, and the angle includes the angle of arrival (AoA) and the angle of departure (AoD). Furthermore, if the antenna array is a uniform linear array (ULA), AoA and AoD are scalars. Alternatively, if the antenna array is a uniform planar array (UPA), AoA and AoD can be represented by elevation and yaw angles. In the following description, "amplitude” is used as an example of "power,” and the angle includes AoA and AoD.
  • embodiments of this application provide a data transmission method and apparatus.
  • this application provides a data transmission method, which is used in a first device, as shown in FIG4, including:
  • Step S410 Obtain the first mapping relationship and the first data to be compressed
  • the first device can output information in any one or more of the following forms: unicast, multicast, and broadcast. It is understood that in this application, the first device, as a network device, possesses unicast, multicast, and broadcast capabilities. For example, when a network device transmits information to multiple terminals, the network device can broadcast the common information (e.g., basic information) to each terminal, while using unicast or multicast for terminal-specific information (e.g., enhanced information). For instance, a base station simultaneously transmits data with terminals A, B, C, and D.
  • the common information e.g., basic information
  • terminal-specific information e.g., enhanced information
  • the common basic information is transmitted via broadcast (e.g., broadcasting the basic information to terminals A, B, C, and D), while the enhanced information is transmitted via unicast (e.g., sending the enhanced information of terminals A, B, C, and D to terminals A, B, C, and D respectively).
  • terminals A and B have the same enhanced information, so they can multicast the same enhanced information to terminals A and B, while terminals C and D are still sent via unicast.
  • the first mapping relationship may be generated by the first device; for example, by the first device based on data characteristics; exemplaryly, the data characteristics include at least one of the following: the power of each path of the reference point in the electromagnetic map region, the delay of each path of the reference point in the electromagnetic map region, the angle of arrival (AOA) of each path of the reference point in the electromagnetic map region, and the angle of departure (AOD) of each path of the reference point in the electromagnetic map region.
  • the data characteristics include at least one of the following: the power of each path of the reference point in the electromagnetic map region, the delay of each path of the reference point in the electromagnetic map region, the angle of arrival (AOA) of each path of the reference point in the electromagnetic map region, and the angle of departure (AOD) of each path of the reference point in the electromagnetic map region.
  • the first mapping relationship can be agreed upon by the protocol; for example, the mapping relationship can be agreed upon in the relevant protocol, so that in actual communication, the sending end and the receiving end can compress and decompress according to the mapping relationship agreed upon in the protocol.
  • the first mapping relationship may come from other devices; for example, it may be obtained from a second or third device.
  • the first mapping relationship can be notified by upper-layer signaling; for example, it can be notified through higher-layer signaling such as RRC, MAC CE, or DCI signaling;
  • the data (or raw data, data to be compressed) involved in this application may include a basic information part and an enhanced information part.
  • the basic information part usually contains information of high importance, such as frequency point information, cell ID, RACH parameters, etc.; while the enhanced information part (or fine-grained part) usually contains information of lower importance or selectively obtained information, such as traffic quota, network bandwidth, network latency, etc.
  • the data to be compressed is divided into a basic information part and an enhanced information part by a mapping table.
  • the enhanced information part is further divided into a priority 1 part and a priority 2 part.
  • Figure 5 only divides the enhanced information part into priorities, while in actual operation, the basic information part can also be divided into priorities, for example, it can also be divided into priority 1 and priority 2 parts.
  • the priority part is not limited to two types (it can be less than or greater than). For example, there can be only one priority 1 (i.e., no priority division), or there can be priority 1, priority 2, priority 3, priority 4... priority n.
  • both the basic information part and the enhanced information part can be divided into different priority parts, and the number of them can be any integer. It is understood that information with different priorities can be transmitted in different transmission resources. For example, information with higher priority can be transmitted first, followed by information with lower priority, and their transmission can be carried out in different transmission resources.
  • the first data to be compressed includes basic information data.
  • Step S420 Compress the first data to be compressed based on the first mapping relationship to obtain the first compressed bitstream
  • the data compression in this application can support a variety of different compression schemes, including but not limited to: DFT-based codebook compression schemes; prediction-based differential compression schemes; data distribution-based compression schemes; AI-based compression schemes, etc.
  • the first mapping relationship can be represented in any form, such as by carrying the mapping relationship in a mapping table, array, or matrix.
  • the mapping relationship includes one-to-one mapping or one-to-many mapping.
  • a bitmap can be sent to indicate the dimension being transmitted.
  • N*M mapping table indicating an N*M*4 (Delay, Power, AoA, AoD) RFMAP can be sent with [0,0,1,1] and priority flag 2 to indicate that the transmitted data is N*M dimensional AOA and AOD data with priority 2.
  • parts with the same priority can be compressed together to improve compression efficiency.
  • Step S430 Output first information to the second device, the first information including the first compressed bitstream;
  • the first information includes a first mapping relationship; that is, when outputting the compressed bitstream to the second device, the corresponding mapping relationship is also sent together, so that the second device can decompress the corresponding compressed bitstream based on the mapping relationship.
  • the compressed bitstream is transmitted via PDSCH, PDCCH, PUSCH, or PUCCH; the first mapping relationship is transmitted via PDSCH, PDCCH, PUSCH, PUCCH, or MAC CE, RRC.
  • the first device may output the first mapping relationship before outputting the compressed bitstream; or, the first device may output the first mapping relationship after outputting the compressed bitstream; or, the first device may output the first mapping relationship together with the output compressed bitstream, and the compressed bitstream may be before or after the first mapping relationship.
  • the compressed bitstreams corresponding to different priority parts of the data to be compressed are transmitted in different time sequences; that is, with the support of multi-level mapping tables, the original data can be compressed and transmitted incrementally; for example, in the scenario where the base station broadcasts RFMAP to the terminal, the coarse-grained RFMAP can be broadcast first, and then the fine-grained RFMAP can be broadcast.
  • the compressed bitstreams are transmitted sequentially in a prescribed order.
  • This prescribed order may include: transmitting the compressed bitstreams corresponding to higher priority portions first, followed by the compressed bitstreams corresponding to lower priority portions; or, transmitting the compressed bitstreams corresponding to lower priority portions first, followed by the compressed bitstreams corresponding to higher priority portions.
  • mapping tables When multi-level mapping tables are transmitted together with compressed bitstreams, they are transmitted one by one in a prescribed order. The mapping tables are transmitted before the high-priority compressed bitstreams and together with the high-priority compressed bitstreams, and the next lower priority compressed bitstreams are transmitted subsequently.
  • mapping table When the multi-level mapping table and compressed bitstream are decoupled and transmitted, they are transmitted one by one in the prescribed order.
  • the mapping table is transmitted before the high-priority compressed bitstream, and then the compressed bitstreams of each priority are transmitted one by one.
  • the compressed bitstream can be transmitted along with a corresponding priority identifier, which indicates the transmission priority of the compressed bitstream.
  • this can be implemented as follows: the first information further includes a first priority identifier, which indicates the transmission priority of the first compressed bitstream; and/or, the second information further includes a second priority identifier, which indicates the transmission priority of the second compressed bitstream; and/or, the third information further includes a third priority identifier, which indicates the transmission priority of the third compressed bitstream; as shown in Figures 6C-6D.
  • mapping tables are transmitted together with compressed bitstreams, additional priority indicators are transmitted along with incremental data, where the mapping tables are transmitted before and together with high-priority compressed bitstreams.
  • mapping table is transmitted before the high-priority compressed bitstream as incremental data is transmitted with additional priority indication.
  • priority indication is sent to the receiving end.
  • the compressed bitstream of the same data to be compressed can have one or more mapping relationships.
  • the compressed bitstream can be processed in any one or more of the following ways: weighted merging of the mapping relationships, selection of one, or prediction. Specifically, for example, as shown in Figure 6E:
  • E. Incremental data from the same data source can have different mapping tables.
  • the receiving end can perform corresponding processing based on the reconstructed versions of the data at the corresponding locations with different priorities.
  • the processing includes, but is not limited to, any one or more of the following: weighted merging, selection, and prediction.
  • compressed bitstreams with different priority identifiers can be merged and output; wherein, the priority identifier indicates merging or separation; as shown in Figure 7: priority 1 of priority 1 compressed bitstream and priority 2 of priority 2 compressed bitstream can be sent together (as shown in the upper part of Figure 7) or sent separately (as shown in the lower part of Figure 7).
  • the compressed bitstream is output in a single output and contains compressed bitstreams with different priority identifiers; or, the compressed bitstream is output in multiple outputs and each output contains compressed bitstreams with different priority identifiers.
  • Step S440 Obtain the second data to be compressed and the second mapping relationship
  • step S410 can employ the same strategy as step S410 described above, therefore the identical parts will not be repeated. Only the differences will be explained in detail below:
  • the second data to be compressed includes enhanced information data.
  • the second mapping relationship can be the same as or different from the first mapping relationship
  • the first device can directly compress the second data to be compressed based on the current mapping relationship (the first mapping relationship) and output the compressed bitstream obtained to the second device; as shown in Figure 8, it is a transmission diagram when the first mapping relationship is the same as the second mapping relationship; in Figure 8, the first device is BS, and the second device and the third device are UE1 and UE2 respectively; it can be understood that the first device, as a network device, can realize broadcast, multicast, unicast and other operations.
  • the first device acquires data and obtains a mapping table based on the data characteristics and/or configuration.
  • the data here can be data containing only basic information or complete data containing both basic information and enhanced information. In this embodiment, the latter is used as an example. It should be noted that if the data only contains basic information, the enhanced information can be obtained through other means, as shown in Figure 9. The steps before outputting the enhanced information in this embodiment are the same as in Figure 8, and will not be repeated here. The following focuses on a detailed explanation of the acquisition of the enhanced information.
  • the first device is a BS and the second device is a UE1.
  • the first device (BS) broadcasts basic information to the second device (UE1) before acquiring subsequent priority information (enhanced information) and sending it accordingly.
  • the first device may compress the acquired enhanced information to obtain a compressed bitstream of enhanced information after acquiring an enhancement mapping table (for example, in the table, "0" indicates the basic information part, "1" and “2” indicate the incremental information part, and "2" indicates a priority greater than "1").
  • the first device (BS) sends the compressed bitstream of enhanced information to the second device (UE1).
  • the information sent includes: the enhancement mapping table and the priority 1 compressed bitstream, the priority identifier 2 and the priority 2 compressed bitstream, and the priority identifier N and the priority N compressed bitstream.
  • the positions of the basic information section and the enhanced information section can be indicated by a mapping table, as shown in Figure 8, where the position of "0" in the mapping table is the basic information section, and the positions of "1" and "2" are the enhanced information sections;
  • the first device obtains the basic information portion from the data and compresses the basic information portion based on the mapping relationship of the mapping table to obtain the basic information compressed bitstream (the mapping table in the figure is indicated by "0"), and outputs the mapping table and the basic information bitstream to the second device (UE1) and/or the third device (UE2).
  • the transmission of the mapping table here is not mandatory.
  • the receiving end e.g., the second device (UE1) and the third device (UE2)
  • the current embodiment only provides one possible implementation and does not make a unique limitation on this application.
  • the first device when the first information does not contain the first mapping relationship, the first device outputs data in sequence according to the conventions of the standard or upper-layer signaling to ensure that the second and/or third devices can accurately obtain the compressed bitstream, such as in the form of broadcast, multicast or unicast.
  • the first device (BS) continues to output subsequent enhancement information.
  • the first device (BS) obtains the enhancement information portion for the second device (UE1) and/or the third device (UE2) from the data, and compresses the enhancement information portion of the second device (UE1) and/or the third device (UE2) based on the mapping relationship of the corresponding mapping table to obtain their respective enhanced information compressed bitstreams.
  • the first device (BS) obtains new mapping tables for the second device (UE1) and/or the third device (UE2) respectively before outputting the enhancement data.
  • the new mapping tables of the second device (UE1) and/or the third device (UE2) in this embodiment are the same as the current mapping tables, the new mapping tables of the second device (UE1) and/or the third device (UE2) obtained by the first device after updating are still the current mapping tables. Therefore, the enhancement information portion of the second device and/or the third device can be compressed based on the mapping relationship of the current mapping table to obtain their respective enhanced information compressed bitstreams.
  • the enhanced information bitstream can be output in multiple transmissions, with each output containing compressed bitstreams of different priority levels.
  • the priority 1 compressed bitstream (indicated by "1" in the mapping table in the figure) and the priority 1 identifier are output together; the priority 2 compressed bitstream and the priority identifier 2 are output together (indicated by "2" in the mapping table in the figure)... and so on, with the priority N compressed bitstream and the priority identifier N being output together.
  • the enhanced information bitstream can also be output in a single transmission, with each transmission containing compressed bitstreams of different priority levels.
  • the above method of transmitting enhanced information is also applicable to the output of basic information, that is, basic information can also be output in multiple transmissions or in a single transmission, with the corresponding priority indicated in the output.
  • a priority indication (e.g., indicated by a priority identifier Index) needs to be given before the compressed bitstream to indicate the output priority of the compressed bitstream; if there is no mapping relationship indication and no priority indication, the first device outputs according to the priority order agreed in the standard or upper-layer signaling according to the mapping table to ensure that the second and/or third devices accurately obtain the compressed bitstream.
  • the first device (BS) outputs the enhanced data compression bitstream to the second device (UE1) and/or the third device (UE2).
  • the first device needs to obtain the mapping relationship corresponding to the second data to be compressed, and after obtaining it, compress the second data to be compressed based on the new mapping relationship (the second mapping relationship), and output the compressed bitstream obtained by compression to the second device, as shown in Figure 10.
  • Figure 10 is a transmission flowchart when the first mapping relationship is different from the second mapping relationship; in Figure 10, the first device is BS, and the second and third devices are UEA and UEB, respectively; it can be understood that the first device, as a network device, can realize broadcast, multicast, unicast and other operations; the steps before outputting the enhancement information in this embodiment are the same as those in Figure 8, and will not be repeated here.
  • the output of the enhancement information part will be described in detail below.
  • the first device (BS) After broadcasting basic information, the first device (BS) continues to broadcast subsequent enhancement information. As shown in Figure 10, the first device (BS) obtains the enhancement information portion from the data and compresses the enhancement information portion based on the mapping relationship in the new mapping table to obtain the enhanced information compressed bitstream. In one possible implementation, before outputting the enhancement data, the first device (BS) obtains new mapping tables for the second device (UEA) and/or the third device (UEB), as shown in Figure 10. The first device obtains mapping table A for the enhancement information portion of the second device (UE A) and/or mapping table B for the enhancement information portion of the third device (UE B), and compresses the respective enhancement information portion based on the mapping relationship in their respective mapping tables to obtain the compressed bitstream of their respective enhancement information portion.
  • the enhanced information bitstream can be output multiple times, with each output containing compressed bitstreams of different priority portions.
  • the priority A1 compressed bitstream (indicated by "1" in the mapping table) is sent together with mapping table A
  • the priority A2 compressed bitstream is sent together with priority identifier A2 (indicated by "2" in the mapping table).
  • the priority B1 compressed bitstream (indicated by "1" in the mapping table) is output together with mapping table B
  • the priority B2 compressed bitstream is output together with priority identifier B2 (indicated by "2" in the mapping table)
  • the priority B3 compressed bitstream is output together with priority identifier B3 (indicated by "3" in the mapping table).
  • the enhanced information bitstream can also be output in a single transmission, containing compressed bitstreams of different priority portions.
  • the same method of outputting enhanced information applies to the output of basic information, that is, basic information can also be output in multiple transmissions or in a single transmission with priority indications.
  • the first device (BS) outputs an enhanced data compression bitstream to the second device (UEA) and/or the third device (UE B).
  • the base station can first broadcast the common part of each UE's RFMAP (i.e., the coarse-grained RFMAP part, or the basic information part), and then send the exclusive part of each UE's RFMAP (i.e., the fine-grained RFMAP part, or the enhanced information part) according to the actual task requirements, thereby improving the utilization rate of transmission resources.
  • the common part of each UE's RFMAP i.e., the coarse-grained RFMAP part, or the basic information part
  • the exclusive part of each UE's RFMAP i.e., the fine-grained RFMAP part, or the enhanced information part
  • the first device may acquire feedback information from the second device and obtain a second mapping relationship based on the feedback information; and/or acquire feedback information from the third device and obtain a third mapping relationship based on the feedback information.
  • the feedback information obtained from the second device includes: the mapping relationship corresponding to the second data to be compressed; and/or, region indication information
  • the feedback information obtained from the third device includes: the mapping relationship corresponding to the third data to be compressed; and/or, region indication information.
  • the first device is BS
  • the second device is UE1
  • the third device is UE2
  • the first device (BS) can obtain feedback information from the second device (UE1) and obtain a second mapping relationship based on the feedback information
  • the first device (BS) obtains feedback information from the third device (UE2) and obtains a third mapping relationship based on the feedback information.
  • the feedback information can be a new mapping relationship; for example, in Figure 11, the second device (UE1) directly outputs a new mapping table to the first device (BS), so that the first device (BS) directly updates the mapping relationship for the incremental information part of the second device (UE1) according to the obtained mapping table; it is understood that when the feedback information is a mapping relationship, the feedback device side (UE1) is known to the mapping relationship by default, so the first device (BS) does not need to send the mapping relationship again.
  • the feedback information may be area indication information, used to indicate the data portion of interest to the second device (UE1) and/or the third device (UE2), for example:
  • RFMAP Geographic information in RFMAP, such as building data
  • the BS will prioritize sending building-related data
  • Coordinate information in RFMAP such as 22.65, 114.06; the BS will prioritize sending data near these coordinates;
  • RFMAP index information such as 24, 15, 9, 9
  • BS will prioritize sending data from the 9*9 reference points surrounding the (24, 15) reference point in the RFMAP;
  • Pattern indication The pattern is configured in advance through upper-layer signaling.
  • the BS will transmit according to pattern number 10 in the pre-agreed Pattern Set; the Pattern Set can be configured through RRC, MAC CE, etc.
  • the third device (UE2) outputs a region indication to the first device (BS), thereby enabling the first device (BS) to update the mapping relationship of the incremental information portion for the third device (UE2) according to the region indication;
  • the first device (BS) outputs compressed bitstreams (priority identifier A1 and priority A1 compressed bitstream; priority identifier A2 and priority A2 compressed bitstream) to the second device (UE1); and/or, the first device (BS) outputs new mapping relationships (mapping table B) and compressed bitstreams (priority identifier B1 and priority B1 compressed bitstream; priority identifier B2 and priority B2 compressed bitstream; priority identifier B3 and priority B3 compressed bitstream) to the third device (UE2).
  • mapping table B mapping table B
  • compressed bitstreams priority identifier B1 and priority B1 compressed bitstream; priority identifier B2 and priority B2 compressed bitstream; priority identifier B3 and priority B3 compressed bitstream
  • acquiring the second data to be compressed includes: acquiring the second data to be compressed based on feedback information from the second device; acquiring the third data to be compressed includes: acquiring the third data to be compressed based on feedback information from the third device.
  • Step S450 Compress the second data to be compressed based on the second mapping relationship to obtain the second compressed bitstream
  • step S420 it is understandable that the same strategy as step S420 above can be used in this step, so the same parts will not be described again.
  • Step S460 Output second information to the second device, the second information including the second compressed bitstream;
  • step S430 can be used in this step, so the same parts will not be repeated. Only the differences will be described below.
  • time-frequency resources are specified during the first transmission of the second compressed bitstream; or, they are specified according to upper-layer signaling or DCI.
  • the second information includes a second mapping relationship; that is, when outputting the compressed bitstream to the second device, the corresponding mapping relationship is also sent together, so that the second device can decompress the corresponding compressed bitstream based on the mapping relationship.
  • the first data to be compressed and the second data to be compressed include multipath data and/or non-multipath data; the first mapping relationship indicates the first priority part of the first data to be compressed; the second mapping relationship indicates the first priority part of the second data to be compressed; wherein, the first priority part of the first data to be compressed corresponds to the first compression precision of the first data to be compressed, and the first priority part of the second data to be compressed corresponds to the first compression precision of the second data to be compressed.
  • the data to be compressed can be any raw data, such as 6G of raw data; the acquired data to be compressed can be either regular or irregular data.
  • the data in a region is regular data when it contains only non-multipath data or only multipath data with the same number of paths.
  • the data shown in Figure 12A is regular data, which is distributed in region G, where the 6 reference points (or grid points) (pos 1-pos 6) in region G have the same number of multipath paths.
  • an RFMAP G with the same number of multipaths at each reference point (or grid point) is used as an example for illustration.
  • the first device generates a non-uniform compression UEC mapping table based on the power distribution. This mapping table is used to indicate the first mapping relationship. Among them, the number of multipaths at the 6 reference points (or grid points) is the same.
  • the data to be compressed is divided into two priorities: high priority and low priority.
  • High priority is indicated by "1", and low priority by "0".
  • more bits are used to indicate the high priority portion to ensure reconstruction accuracy, meaning higher compression precision is used for the high priority portion.
  • fewer bits are used for the low priority portion to ensure speed, meaning lower compression precision can be used for the low priority portion.
  • the first device compresses the multipath data according to the mapping table to obtain a compressed bitstream.
  • the obtained compressed bitstream may be the result of quantization, VQ, matrix factorization, etc.
  • each attribute dimension of RFMAP must be compressed according to the corresponding configuration. For example, in Figure 12A, compression is performed on the four dimensions of power, delay, angle of arrival (AOA), and angle of departure (AOD) to obtain their respective compressed bitstreams.
  • each attribute dimension of RFMAP can have the same compression configuration or different compression configurations; for example, each attribute dimension can have a specific compression configuration. For instance, when the priority is 1, power and delay are quantized with 10 bits, and angle of arrival (AOA) and angle of departure (AOD) are quantized with 5 bits.
  • AOA angle of arrival
  • AOD angle of departure
  • the data in a region is considered irregular when it contains both non-multipath data and multipath data, or when it contains multipath data with different numbers of paths.
  • the data shown in Figure 12B is irregular, where the data at the six reference points (or grid points) (pos 1-pos 6) in region G have different numbers of multipath paths.
  • Figure 12B illustrates an RFMAP G with different multipath numbers at each reference point (or grid point).
  • the first device generates a non-uniform compression UEC mapping table based on the power distribution.
  • This mapping table indicates the first mapping relationship.
  • the six reference points (or grid points) have different multipath numbers; for example, the third reference point (or grid point) has the largest multipath number among the six reference points (or grid points), and the fifth reference point (or grid point) has the smallest multipath number among the six reference points (or grid points). It can be understood that the mapping table can be generated using the largest multipath number as the dimension.
  • the data to be compressed is divided into two priorities: high priority and low priority.
  • High priority is indicated by "2", and low priority by "1".
  • low priority is used for padding, meaning "0" represents zero padding and corresponds to no information.
  • more bits are used to indicate the high priority part to ensure reconstruction accuracy, i.e., higher compression precision is used for the high priority part; while fewer bits are used for the low priority part to ensure speed, i.e., lower compression precision can be used for the low priority part.
  • high compression precision can be used for high priority parts
  • lower compression precision can be used for lower priority parts.
  • the first device compresses the multipath data according to the mapping table to obtain a compressed bitstream.
  • the obtained compressed bitstream may be the result of quantization, VQ, matrix factorization, etc.
  • each attribute dimension of RFMAP must be compressed according to the corresponding configuration. For example, in Figure 12B, compression is performed on the four dimensions of power, delay, angle of arrival (AOA), and angle of departure (AOD) to obtain their respective compressed bitstreams.
  • each attribute dimension of RFMAP can have the same compression configuration or different compression configurations; for example, each attribute dimension can have a specific compression configuration. For instance, when the priority is 1, power and delay are quantized with 10 bits, and angle of arrival (AOA) and angle of departure (AOD) are quantized with 5 bits.
  • AOA angle of arrival
  • AOD angle of departure
  • the first mapping relationship can also indicate the second priority portion, the third priority portion, the fourth priority portion, and even the Nth priority portion of the first data to be compressed; and/or, the second mapping relationship can also indicate the second priority portion, the third priority portion, the fourth priority portion, and even the Nth priority portion of the second data to be compressed; and/or, the third mapping relationship can also indicate the second priority portion, the third priority portion, the fourth priority portion, and even the Nth priority portion of the third data to be compressed; wherein, the second priority portion of the first data to be compressed corresponds to the second compression precision of the first data to be compressed, the third priority portion of the first data to be compressed corresponds to the third compression precision of the first data to be compressed, the fourth priority portion of the first data to be compressed corresponds to the fourth compression precision of the first data to be compressed;
  • the Nth priority portion corresponds to the Nth compression precision of the first data to be compressed; the second priority portion of the second data to be compressed corresponds to the second compression precision of the second data to be compressed, the third priority portion
  • the Nth priority portion of the second data to be compressed corresponds to the Nth compression precision of the second data to be compressed;
  • the second priority portion of the third data to be compressed corresponds to the second compression precision of the third data to be compressed
  • the third priority portion of the third data to be compressed corresponds to the third compression precision of the third data to be compressed
  • the fourth priority portion of the third data to be compressed corresponds to the fourth compression precision of the third data to be compressed
  • the first compression precision of the first data to be compressed can be higher than the second compression precision of the first data to be compressed; the first compression precision of the second data to be compressed can be higher than the second compression precision of the second data to be compressed; and the first compression precision of the third data to be compressed can be higher than the second compression precision of the third data to be compressed.
  • the first priority can be greater than or less than the second priority, and can be flexibly adjusted according to the situation in actual use, depending on how the priority standard is defined, for example, in the following two cases:
  • Scenario 1 When the first priority is greater than the second priority, the first priority (high priority) portion is compressed with higher compression precision.
  • the priority standard can be data integrity or precision. Therefore, the first priority (i.e., high priority) portion is compressed with higher compression precision to ensure data integrity. For example, more bits are used for compression indication.
  • eMBB enhanced mobile broadband
  • the integrity of the data content is regarded as the priority standard. In this case, the high priority portion should be compressed with higher compression precision to ensure the accuracy of data integrity.
  • Scenario 2 When the first priority is lower than the second priority, the second priority (high priority) portion is compressed with lower compression precision.
  • the priority standard can be data transmission rate or latency. Therefore, the second priority (high priority) portion is compressed with lower compression precision to ensure transmission rate or latency, for example, by using fewer bits for compression indication.
  • a common scenario is in Ultra-Reliable Low-Latency Communication (URLLC) scenarios, where users are more sensitive to data latency. Therefore, data latency is regarded as a priority. In this case, lower compression precision should be used for high priority data to reduce transmission delay.
  • URLLC Ultra-Reliable Low-Latency Communication
  • the method in this application may further include: outputting first information to a third device, the first information including a first compressed bitstream; acquiring third data to be compressed and a third mapping relationship; compressing the third data to be compressed based on the third mapping relationship to obtain a third compressed bitstream; outputting third information to the third device, wherein the third information includes the third compressed bitstream; the third mapping relationship indicating a first priority portion of the third data to be compressed; the first priority portion of the third data to be compressed corresponding to a first compression precision of the third data to be compressed; the third data to be compressed including multipath data and/or non-multipath data.
  • the third mapping relationship indicating a first priority portion of the third data to be compressed
  • the first priority portion of the third data to be compressed corresponding to a first compression precision of the third data to be compressed
  • the third data to be compressed including multipath data and/or non-multipath data.
  • the third data to be compressed includes enhanced information data.
  • the third information includes a third mapping relationship; that is, when outputting the compressed bitstream to the third device, the corresponding mapping relationship is also sent, so that the third device can decompress the corresponding compressed bitstream based on the mapping relationship.
  • time-frequency resources may be specified during the first transmission of the third compressed bitstream; or, they may be specified based on upper-layer signaling or DCI.
  • the data transmission method in this application has been described above from the perspective of the first device side (i.e., the network device side).
  • the corresponding method from the second device side i.e., the terminal side
  • the corresponding methods applicable to the network device side in this application are also applicable to the terminal device side, or, for those skilled in the art, only simple adjustments are needed to implement the corresponding methods on the network device side on the terminal device side; therefore, the same parts will not be repeated.
  • this application provides a data transmission method, as shown in FIG4, which is applied to a second device and includes:
  • Step S430 Obtain first information, the first information including a first compressed bitstream; the first compressed bitstream is obtained by the first device compressing the first data to be compressed based on a first mapping relationship;
  • Step S460 Obtain second information, the second information including a second compressed bitstream; the second compressed bitstream is obtained by the first device compressing the second data to be compressed based on a second mapping relationship;
  • the first data to be compressed and the second data to be compressed include multipath data and/or non-multipath data; the first mapping relationship indicates the first priority portion of the first data to be compressed; the second mapping relationship indicates the first priority portion of the second data to be compressed;
  • the first priority portion of the first data to be compressed corresponds to the first compression precision of the first data to be compressed
  • the first priority portion of the second data to be compressed corresponds to the first compression precision of the second data to be compressed
  • Step S470 Decompress the compressed bitstream according to the corresponding mapping relationship.
  • both the second and third devices are terminal-side devices; therefore, the second device can be replaced by the third device; similarly, the corresponding methods applicable to the second device are also applicable to the third device.
  • terminals or access network devices may include hardware structures and/or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the design constraints of the specific application of the technical solution.
  • this application provides a schematic diagram of a possible communication device, as shown in FIG13.
  • These communication devices can implement one or more corresponding functions in the above-described method embodiments.
  • functions implemented by a first communication device or a second communication device may achieve the beneficial effects of the above-described method embodiments.
  • the communication device may be a terminal or an access network device, or the communication device may be a module (such as a chip) applied in a terminal or access network device.
  • the communication device 1300 includes a processing unit 1310 and a transceiver unit 1320.
  • the communication device 1300 is used to implement the functions of the first or second device in the method embodiment of Figure 4.
  • the transceiver unit 1320 may also be referred to as an output unit, an interface unit, or a communication unit, etc.
  • the transceiver unit 1320 includes at least one of a transmitting unit or a receiving unit. The transmitting unit and the receiving unit may be integrated together, or they may be two independent units, etc.
  • the communication device 1300 When the communication device 1300 is used for the function of the first device (e.g., BS) in Figure 4, specifically:
  • the transceiver unit 1320 acquires a first mapping relationship and a first data to be compressed; outputs first information to the second device, the first information including a first compressed bitstream; acquires a second data to be compressed and a second mapping relationship; and outputs second information to the second device, the second information including a second compressed bitstream.
  • Processing unit 1310 compresses first data to be compressed based on a first mapping relationship to obtain a first compressed bitstream; and compresses second data to be compressed based on a second mapping relationship to obtain a second compressed bitstream.
  • the first data to be compressed and the second data to be compressed include multipath data and/or non-multipath data; the first mapping relationship indicates the first priority part of the first data to be compressed; the second mapping relationship indicates the first priority part of the second data to be compressed; wherein, the first priority part of the first data to be compressed corresponds to the first compression precision of the first data to be compressed, and the first priority part of the second data to be compressed corresponds to the first compression precision of the second data to be compressed.
  • the system further includes: a transceiver unit 1320, which outputs first information to a third device, the first information including a first compressed bitstream; acquires third data to be compressed and a third mapping relationship; compresses the third data to be compressed based on the third mapping relationship to obtain a third compressed bitstream; outputs third information to the third device, the third information including the third compressed bitstream; the third mapping relationship indicates a first priority portion of the third data to be compressed; wherein the third data to be compressed includes multipath data and/or non-multipath data; the first priority portion of the third data to be compressed corresponds to a first compression precision of the third data to be compressed.
  • the first mapping relationship also indicates a second priority portion of the first data to be compressed; and/or, the second mapping relationship also indicates a second priority portion of the second data to be compressed; and/or, the third mapping relationship also indicates a second priority portion of the third data to be compressed;
  • the second priority portion of the first data to be compressed corresponds to the second compression precision of the first data to be compressed
  • the second priority portion of the second data to be compressed corresponds to the second compression precision of the second data to be compressed
  • the second priority portion of the third data to be compressed corresponds to the second compression precision of the third data to be compressed.
  • the first compression precision of the first data to be compressed is higher than the second compression precision of the first data to be compressed; the first compression precision of the second data to be compressed is higher than the second compression precision of the second data to be compressed; the first compression precision of the third data to be compressed is higher than the second compression precision of the third data to be compressed.
  • the second mapping, the third mapping, and the first mapping may be the same or different.
  • obtaining the second mapping relationship and/or the third mapping relationship specifically includes: the transceiver unit 1320 obtaining feedback information from the second device and obtaining the second mapping relationship based on the feedback information; and/or obtaining feedback information from the third device and obtaining the third mapping relationship based on the feedback information.
  • the feedback information obtained from the second device includes: a mapping relationship corresponding to the second data to be compressed; and/or, region indication information;
  • the feedback information obtained from the third device includes: a mapping relationship corresponding to the third data to be compressed; and/or, region indication information.
  • the area indication information in the feedback information obtained from the second device includes any one or more of the following: geographic information, coordinate information, pattern indication, and index information in the second data to be compressed;
  • the area indication information in the feedback information obtained from the third device includes any one or more of the following: geographic information, coordinate information, pattern indication, and index information in the third data to be compressed.
  • obtaining the second data to be compressed includes: the transceiver unit 1320 obtaining the second data to be compressed based on feedback information from the second device; obtaining the third data to be compressed includes: the transceiver unit 1320 obtaining the third data to be compressed based on feedback information from the third device.
  • the first data to be compressed, the second data to be compressed, and the third data to be compressed are acquired simultaneously or not simultaneously.
  • the compressed bitstreams corresponding to different priority portions of the data to be compressed are transmitted at different times.
  • the transmission of compressed bitstreams corresponding to different priority parts of the data to be compressed in different time sequences specifically includes: the transceiver unit 1320 first transmits the compressed bitstream corresponding to the high priority part, and then transmits the compressed bitstream corresponding to the low priority part; or, first transmits the compressed bitstream corresponding to the low priority part, and then transmits the compressed bitstream corresponding to the high priority part.
  • the transmission of compressed bitstreams corresponding to different priority portions of the data to be compressed at different times specifically includes: the first information further includes a first priority identifier, which is used to indicate the transmission priority of the first compressed bitstream; and/or, the second information further includes a second priority identifier, which is used to indicate the transmission priority of the second compressed bitstream; and/or, the third information further includes a third priority identifier, which is used to indicate the transmission priority of the third compressed bitstream.
  • it also includes: a merged output of compressed bitstreams with different priority identifiers; wherein the priority identifiers indicate whether they are merged or separated.
  • the compressed bitstream is output in a single output and contains compressed bitstreams with different priority identifiers; or, the compressed bitstream is output in multiple outputs and each output contains compressed bitstreams with different priority identifiers.
  • it further includes: the first information contains a first mapping relationship; and/or, the second information contains a second mapping relationship; and/or, the third information contains a third mapping relationship.
  • the first mapping relationship further indicates the third priority portion of the first data to be compressed; and/or, the second mapping relationship further indicates the third priority portion of the second data to be compressed; and/or, the third mapping relationship further indicates the third priority portion of the third data to be compressed; wherein, the third priority portion of the first data to be compressed corresponds to the third compression precision of the first data to be compressed; the third priority portion of the second data to be compressed corresponds to the third compression precision of the second data to be compressed; and the third priority portion of the third data to be compressed corresponds to the third compression precision of the third data to be compressed.
  • the method further includes: specifying time-frequency resources during the first transmission of the second compressed bitstream; or specifying them according to upper-layer signaling or DCI; specifying time-frequency resources during the first transmission of the third compressed bitstream; or specifying them according to upper-layer signaling or DCI.
  • One possible implementation also includes outputting information in any one or more of the following forms: unicast, multicast, and broadcast.
  • the communication device 1300 When the communication device 1300 is used for the function of the second device (e.g., UE) in Figure 4, specifically:
  • the transceiver unit 1320 acquires first information, which includes a first compressed bitstream; the first compressed bitstream is obtained by the first device compressing the first data to be compressed based on a first mapping relationship; and acquires second information, which includes a second compressed bitstream; the second compressed bitstream is obtained by the first device compressing the second data to be compressed based on a second mapping relationship.
  • the first data to be compressed and the second data to be compressed include multipath data and/or non-multipath data; the first mapping relationship indicates the first priority portion of the first data to be compressed; the second mapping relationship indicates the first priority portion of the second data to be compressed;
  • the first priority part of the first data to be compressed corresponds to the first compression precision of the first data to be compressed
  • the first priority part of the second data to be compressed corresponds to the first compression precision of the second data to be compressed
  • Processing unit 1310 decompresses the corresponding compressed bitstream based on the corresponding mapping relationship.
  • the first mapping relationship further indicates a second priority portion of the first data to be compressed; and/or, the second mapping relationship further indicates a second priority portion of the second data to be compressed; wherein the second priority portion of the first data to be compressed corresponds to a second compression precision of the first data to be compressed; the second priority portion of the second data to be compressed corresponds to a second compression precision of the second data to be compressed; the first compression precision of the first data to be compressed is higher than the second compression precision of the first data to be compressed; and the first compression precision of the second data to be compressed is higher than the second compression precision of the second data to be compressed.
  • the second mapping may be the same as or different from the first mapping.
  • it further includes: a transceiver unit 1320 that outputs feedback information to the first device so that the first device obtains a second mapping relationship based on the feedback information.
  • the feedback information specifically includes: the mapping relationship corresponding to the second data to be compressed; and/or, region indication information.
  • the area indication information includes any one or more of the following: geographic information, coordinate information, pattern indication, and index information in the second data to be compressed.
  • the first data to be compressed and the second data to be compressed are acquired simultaneously by the first device, or not simultaneously.
  • the compressed bitstreams corresponding to different priority portions of the data to be compressed are transmitted at different times.
  • the transmission of compressed bitstreams corresponding to different priority portions of the data to be compressed at different times specifically includes: the first information further includes a first priority identifier, which is used to indicate the transmission priority of the first compressed bitstream; and/or, the second information further includes a second priority identifier, which is used to indicate the transmission priority of the second compressed bitstream.
  • it also includes: sending compressed bitstreams with different priority identifiers in a merged manner; wherein the priority identifiers indicate either merging or separation.
  • the compressed bitstream is output in a single output and contains compressed bitstreams with different priority identifiers; or, the compressed bitstream is output in multiple outputs and each output contains compressed bitstreams with different priority identifiers.
  • it further includes: the first information contains a first mapping relationship; and/or, the second information contains a second mapping relationship.
  • the first mapping relationship further indicates the third priority portion of the first data to be compressed; and/or, the second mapping relationship further indicates the third priority portion of the second data to be compressed; wherein the third priority portion of the first data to be compressed corresponds to the third compression precision of the first data to be compressed; and the third priority portion of the second data to be compressed corresponds to the third compression precision of the second data to be compressed.
  • it also includes: specifying time-frequency resources during the first transmission of the second compressed bitstream; or, specifying them according to upper-layer signaling or DCI.
  • processing unit 1310 and the transceiver unit 1320 please refer to the description in Figure 4 of the above method embodiment, which will not be repeated here.
  • each functional unit in this application embodiment can be integrated into a physical device (e.g., in a processor), or each functional unit can be a separate physical device, or two or more units can be integrated into one unit.
  • the integrated unit can be implemented in hardware or as a software functional module, etc.
  • the communication device 1400 includes a processing circuit 1410 and an interface circuit 1420.
  • the processing circuit 1410 and the interface circuit 1420 are coupled to each other. It can be understood that the processing circuit 1410 can be a processor, and the interface circuit 1420 can be a transceiver or an input/output interface.
  • the communication device 1400 may further include a memory 1430 for storing instructions executed by the processing circuit 1410, or storing input data required for the running instructions of the processing circuit 1410, or storing data generated after the running instructions of the processing circuit 1410.
  • the memory (e.g., 1430) in the embodiments of this application may be integrated into the processing circuit (e.g., 1410), or the memory (e.g., 1430) and the processing circuit (e.g., 1410) may be set separately.
  • the processing circuit 1410 is used to implement the function of the processing unit 1310
  • the interface circuit 1420 is used to implement the function of the transceiver unit 1320.
  • the chip When the aforementioned communication device is a chip applied to a terminal, the chip implements the functions of the terminal in the above method embodiments.
  • the chip receives information sent to the terminal by the access network device through other modules (such as a radio frequency module or antenna) in the terminal; or, the chip sends information to other modules (such as a radio frequency module or antenna) in the terminal, which is information sent by the terminal to the access network device.
  • the module implements the functions of the access network device in the above method embodiments.
  • the module receives information from other modules (such as a radio frequency module or antenna) in the access network device, the information being sent by the terminal to the access network device; or, the module sends information to other modules (such as a radio frequency module or antenna) in the access network device, the information being sent by the access network device to the terminal.
  • processors in the embodiments of this application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.
  • DSPs digital signal processors
  • ASICs application-specific integrated circuits
  • FPGAs field-programmable gate arrays
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the memory in the embodiments of this application may be random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), register, hard disk, portable hard disk, CD-ROM, or any other form of storage medium known in the art.
  • RAM random access memory
  • ROM read-only memory
  • PROM programmable read-only memory
  • EPROM erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • register hard disk, portable hard disk, CD-ROM, or any other form of storage medium known in the art.
  • the method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor.
  • the software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium well known in the art.
  • An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium.
  • the storage medium can also be a component of the processor.
  • the processor and the storage medium can reside in an ASIC.
  • This application embodiment also provides a communication device, which includes a processor and a memory.
  • the processor is used to implement the functions of the first device and/or the second device in FIG4.
  • the processor is used to execute a computer program or instructions stored in the memory, which is used to store the computer program or the instructions.
  • the method of the first device and/or the second device in FIG4 is performed.
  • the processor and the memory are coupled.
  • This application also provides a communication device, including a processor, which is used to implement the functions of the first device and/or the second device in FIG4.
  • This application also provides a computer-readable storage medium storing instructions, which may also be referred to as computer programs, computer program code, etc.
  • the instructions are executed on a computer to enable the functions of the first and/or second devices in FIG4 of the above method embodiments.
  • This application also provides a computer program product, including a computer program or instructions, wherein the computer program product includes a computer program or instructions for performing a method of the first apparatus in FIG4, or the computer program product includes a computer program or instructions for performing a method of the second apparatus in FIG4.
  • This application also provides a chip including a processor coupled to a memory.
  • the processor is used to execute computer programs or instructions stored in the memory, so that the functions of the first device and/or the second device in FIG4 are realized.
  • This application also provides a communication system, including a first communication device and a second communication device.
  • the first communication device is used to implement the function of the first device in FIG4, and the second communication device is used to implement the function of the second device in FIG4.
  • implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof.
  • software When implemented using software, it can be implemented entirely or partially in the form of a computer program product.
  • the computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device.
  • the computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another.
  • the computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media.
  • the available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive.
  • the computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.
  • At least one means one or more, and “more than one” means two or more.
  • “And/or” describes the relationship between related objects, indicating that three relationships can exist.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural.
  • the character "/” generally indicates that the preceding and following related objects have an “or” relationship.
  • “Including at least one of A, B, and C” can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

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Abstract

本申请提供一种数据传输方法及装置。该方法包括：获取第一映射关系以及第一待压缩数据；基于第一映射关系对第一待压缩数据进行压缩以获得第一压缩码流；向第二装置输出第一信息，第一信息包含第一压缩码流；获取第二待压缩数据以及第二映射关系；基于第二映射关系对第二待压缩数据进行压缩以获得第二压缩码流；向第二装置输出第二信息，第二信息包含第二压缩码流；其中，第一待压缩数据和第二待压缩数据包括多径数据和/或非多径数据；第一映射关系指示第一待压缩数据的第一优先级部分；第二映射关系指示第二待压缩数据的第一优先级部分。采用上述方法，可实现基于数据特性的合理压缩，提高了数据传输效率。

Description

一种数据传输方法及装置
本申请要求于2024年5月22日提交国家知识产权局、申请号为202410645891.X、申请名称为“一种数据传输方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信领域，尤其涉及一种数据传输方法及装置。
背景技术
随着无线通信应用场景的日益丰富,未来无线通信过程中会产生很多面向新场景的数据，例如，面向极致沉浸式云VR、触觉多感官通信、智慧医疗、高级自动驾驶、高精度定位与追踪等场景的数据；这些数据基于不同场景对传输有着不同要求。这些数据通常具有数据量大、冗余较多、存在时/频/空相关性等特性。同时，很多场景下的数据可以接受一定有损程度的压缩及传输结果，即不需要百分百地恢复原始数据，因此对数据进行发送前的压缩处理是本领域常规技术手段。然而，考虑到不同数据对通信任务或场景的影响，例如无线通信环境中不同多径对任务的贡献不同，信道矩阵变换后不同流的重要性不同；如何针对特定数据制定合理且高效的压缩配置策略，是当下需要解决的问题。
发明内容
本申请提供一种数据传输方法及装置，用于针对不同数据制定合理且高效的压缩策略，以提高数据的传输效率。
第一方面，本申请提供一种数据传输方法，所述方法用于第一装置，包括：获取第一映射关系以及第一待压缩数据；基于所述第一映射关系对所述第一待压缩数据进行压缩以获得第一压缩码流；向第二装置输出第一信息，所述第一信息包含所述第一压缩码流；获取第二待压缩数据以及第二映射关系；基于所述第二映射关系对所述第二待压缩数据进行压缩以获得第二压缩码流；向所述第二装置输出第二信息，所述第二信息包含所述第二压缩码流；其中，所述第一待压缩数据和所述第二待压缩数据包括多径数据和/或非多径数据；所述第一映射关系指示所述第一待压缩数据的第一优先级部分；所述第二映射关系指示所述第二待压缩数据的第一优先级部分；其中，所述第一待压缩数据的第一优先级部分对应所述第一待压缩数据的第一压缩精度，所述第二待压缩数据的第一优先级部分对应所述第二待压缩数据的第一压缩精度。
通过上述实现，在对多径和或/非多径数据进行压缩时，针对不同信息采用不同的压缩策略(例如，对于基本信息和增强信息分别使用不同的映射关系)，从而实现基于数据特性的合理压缩，提高传输效率。
在一种可能的实现中，所述方法还包括：向第三装置输出第一信息，所述第一信息包含所述第一压缩码流；获取第三待压缩数据以及第三映射关系；基于所述第三映射关系对所述第三待压缩数据进行压缩以获得第三压缩码流；向所述第三装置输出第三信息，所述第三信息包含所述第三压缩码流；其中，所述第三待压缩数据包括多径数据和/或非多径数据；所述第三映射关系指示所述第三待压缩数据的第一优先级部分；所述第三待压缩数据的第一优先级部分对应所述第三待压缩数据的第一压缩精度。
通过上述实现，对各接收装置需获取信息的相同部分(例如基本信息部分或粗粒度部分)采用相同的压缩策略压缩并输出，而对各接收装置需获取信息的不同部分(例如增量信息部分或细粒度部分)采用各自特定的压缩策略进行压缩并输出，从而提高传输效率。
在一种可能的实现中，所述第一映射关系还指示所述第一待压缩数据的第二优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第二优先级部分；和/或，所述第三映射关系还指示所述第三待压缩数据的第二优先级部分；其中，所述第一待压缩数据的第二优先级部分对应所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第二优先级部分对应所述第二待压缩数据的第二压缩精度；所述第三待压缩数据的第二优先级部分对应所述第三待压缩数据的第二压缩精度；所述第一待压缩数据的第一压缩精度高于所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第一压缩精度高于所述第二待压缩数据的第二压缩精度；所述第三待压缩数据的第一压缩精度高于所述第三待压缩数据的第二压缩精度。
通过上述实现，在对多径和或/非多径数据进行压缩时，对于第一优先级部分采用更高的压缩精度进行压缩指示，以保证传输精度，而对于第二优先级部分则采用较低压缩精度进行，以保证传输效率，从而实现基于数据特性的合理压缩。
在一种可能的实现中，所述第二映射关系、所述第三映射关系以及所述第一映射关系，相同，或不同。
在一种可能的实现中，获取所述第二映射关系和/或所述第三映射关系具体包括：获取来自所述第二装置的反馈信息，基于该反馈信息获得所述第二映射关系；和/或，获取来自所述第三装置的反馈信息，基于该反馈信息获得所述第三映射关系。
通过上述实现，可以基于相应装置的反馈信息生成相应地映射关系，从而可以根据实际需求提供更实用的压缩策略，使得压缩侧略具备动态调整性。
在一种可能的实现中，从所述第二装置获取的反馈信息包括：所述第二待压缩数据对应的映射关系；和/或，区域指示信息；从所述第三装置获取的反馈信息包括：所述第三待压缩数据对应的映射关系；和/或，区域指示信息。
在一种可能的实现中，从所述第二装置获取的反馈信息中的区域指示信息包括一下任意一项或多项：所述第二待压缩数据中的地理信息、坐标信息、pattern指示、Index信息；从所述第三装置获得的反馈信息中的区域指示信息包括一下任意一项或多项：所述第三待压缩数据中的地理信息、坐标信息、pattern指示、Index信息。
在一种可能的实现中，所述获取第二待压缩数据包括：根据所述第二装置的反馈信息获取第二待压缩数据；所述获取第三待压缩数据包括：根据所述第三装置的反馈信息获取第三待压缩数据。
在一种可能的实现中，所述第一待压缩数据、所述第二待压缩数据以及所述第三待压缩数据是同时获取的，或不同时获取的。
在一种可能的实现中，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输。
在一种可能的实现中，所述待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：先传输高优先级部分对应的压缩码流，后续传输次优先级部分对应的压缩码流；或，先传输次优先级部分对应的压缩码流，后续传输高优先级部分对应的压缩码流。
在一种可能的实现中，所述待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：所述第一信息还包含第一优先级标识，所述第一优先级标识用于指示所述第一压缩码流的传输优先级；和/或，所述第二信息还包含第二优先级标识，所述第二优先级标识用于指示所述第二压缩码流的传输优先级；和/或，所述第三信息还包含第三优先级标识，所述第三优先级标识用于指示所述第三压缩码流的传输优先级。
在一种可能的实现中，所述方法还包括：具备不同优先级标识的压缩码流合并输出；其中，优先级标识合并指示，或分开指示。
在一种可能的实现中，压缩码流以单次输出，并包含不同优先级标识的压缩码流；或，压缩码流分多次输出，并每次包含不同优先级标识的压缩码流。
在一种可能的实现中，所述方法还包括：所述第一信息包含所述第一映射关系；和/或，所述第二信息包含所述第二映射关系；和/或，所述第三信息包含所述第三映射关系。
在一种可能的实现中，所述第一映射关系还指示所述第一待压缩数据的第三优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第三优先级部分；和/或，所述第三映射关系还指示所述第三待压缩数据的第三优先级部分；其中，所述第一待压缩数据的第三优先级部分对应所述第一待压缩数据的第三压缩精度；所述第二待压缩数据的第三优先级部分对应所述第二待压缩数据的第三压缩精度；所述第三待压缩数据的第三优先级部分对应所述第三待压缩数据的第三压缩精度。
在一种可能的实现中，所述方法还包括：在第二压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定；在第三压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定。
在一种可能的实现中，所述方法还包括：通过以下任意一种或多种形式输出信息：单播、组播、广播。
第二方面为第一方面对应的方法，有益效果参考第一方面的说明；本申请提供一种数据传输方法，所述方法用于第二装置，包括：
获取第一信息，所述第一信息包含第一压缩码流；所述第一压缩码流由第一装置基于第一映射关系对第一待压缩数据进行压缩获得；获取第二信息，所述第二信息包含第二压缩码流；所述第二压缩码流由第一装置基于第二映射关系对第二待压缩数据进行压缩获得；其中，所述第一待压缩数据和所述第二待压缩数据包括多径数据和/或非多径数据；所述第一映射关系指示所述第一待压缩数据的第一优先级部分；所述第二映射关系指示所述第二待压缩数据的第一优先级部分；其中，所述第一待压缩数据的第一优先级部分对应所述第一待压缩数据的第一压缩精度，所述第二待压缩数据的第一优先级部分对应所述第二待压缩数据的第一压缩精度；基于相应映射关系对相应压缩码流进行解压。
在一种可能的实现中，所述第一映射关系还指示所述第一待压缩数据的第二优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第二优先级部分；其中，所述第一待压缩数据的第二优先级部分对应所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第二优先级部分对应所述第二待压缩数据的第二压缩精度；所述第一待压缩数据的第一压缩精度高于所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第一压缩精度高于所述第二待压缩数据的第二压缩精度。
在一种可能的实现中，所述第二映射关系与所述第一映射关系相同，或不同。
在一种可能的实现中，所述方法还包括：向所述第一装置输出反馈信息，以使得所述第一装置基于所述反馈信息获得所述第二映射关系。
在一种可能的实现中，所述反馈信息具体包括：所述第二待压缩数据对应的映射关系；和/或，区域指示信息。
在一种可能的实现中，所述区域指示信息包括以下任意一项或多项：所述第二待压缩数据中的地理信息、坐标信息、pattern指示、Index信息。
在一种可能的实现中，所述第一待压缩数据和所述第二待压缩数据是所述第一装置同时获取的，或不同时获取的。
在一种可能的实现中，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输。
在一种可能的实现中，所述待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：所述第一信息还包含第一优先级标识，所述第一优先级标识用于指示所述第一压缩码流的传输优先级；和/或，所述第二信息还包含第二优先级标识，所述第二优先级标识用于指示所述第二压缩码流的传输优先级。
在一种可能的实现中，所述方法还包括：具备不同优先级标识的压缩码流合并发送；其中，优先级标识合并指示，或分开指示。
在一种可能的实现中，压缩码流以单次输出，并包含不同优先级标识的压缩码流；或，压缩码流分多次输出，并每次包含不同优先级标识的压缩码流。
在一种可能的实现中，所述方法还包括：所述第一信息包含所述第一映射关系；和/或，所述第二信息包含所述第二映射关系。
在一种可能的实现中，所述第一映射关系还指示所述第一待压缩数据的第三优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第三优先级部分；其中，所述第一待压缩数据的第三优先级部分对应所述第一待压缩数据的第三压缩精度；所述第二待压缩数据的第三优先级部分对应所述第二待压缩数据的第三压缩精度。
在一种可能的实现中，所述方法还包括：在第二压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定。
第三方面，本申请提供一种通信装置，包括：处理器，用于执行存储器中存储的计算机程序或指令；所述存储器，用于存储所述计算机程序或所述指令；当所述计算机程序或所述指令被处理器运行时，使得上述第一方面或第二方面中的方法被实现。
第四方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序或指令，以使得计算机在运行所述计算机程序或指令时，上述第一方面或第二方面中的方法被实现。
第五方面，本申请提供一种计算机程序产品，所述计算机程序产品包括用于执行上述第一方面或第二方面中的方法。
第六方面，本申请提供一种通信系统，所述系统包括第一装置和第二装置；所述第一装置用于实现上述第一方面中的方法；所述第二装置用于实现上述第二方面中的方法。
本申请在上述各方面提供的实现的基础上，还可以进行进一步组合以提供更多实现。
附图说明
图1所示为本申请提供的一种可能的通信系统的架构示意图；
图2所示为本申请提供的可能的实现场景的示意图；
图3所示为本申请提供的一种可能的电磁地图的示意图；
图4所示为本申请提供的一种数据传输方法的流程图；
图5所示为本申请提供的一种可能的原生数据结构示意图；
图6A-图6E所示为本申请提供的可能的数据传输结构示意图；
图7所示为本申请提供的一种可能的优先级标识传输格式示意图；
图8所示为本申请中基本信息部分和增量信息部分映射关系相同时的传输流程图；
图9所示为本申请提供的一种可能的增量信息获取方式的流程图；
图10所示为本申请中基本信息部分和增量信息部分映射关系不同时的传输流程图；
图11所示为本申请中第二装置和/或第三装置向第一装置反馈信息的传输流程图；
图12A至12B所示为本申请提供的可能的原生数据的压缩流程图；
图13所示为本申请提供的一种可能的通信装置结构示意图；
图14所示为本申请提供的另一种可能的通信装置结构示意图。
具体实施方式
为了使得本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步详细描述。方法实施例中的具体操作方法、功能描述等也可以应用于装置实施例或系统实施例中。
本申请实施例可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、5G系统或新无线(new radio，NR)，或者应用于未来的通信系统或其它类似的通信系统(例如6G等)，或者超宽带(ultra wide band，UWB)系统，或者无线保真(wireless fidelity，WiFi)系统。
图1示出了一种可能的、非限制性的系统示意图。如图1所示，该通信系统1000包括无线接入网100和核心网200，可选的，通信系统1000还可以包括互联网300。其中，无线接入网100可以包括至少一个无线接入网设备(如图1中的110a和110b)，还可以包括至少一个终端(如图1中的120a-120j)。终端通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端和终端之间以及无线接入网设备和无线接入网设备之间可以通过有线或无线的方式相互连接。图1只是示意图，该通信系统中还可以包括其它网络设备，比如还可以包括无线中继设备和无线回传设备，在图1中未画出。
无线接入网设备可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、5G移动通信系统中的下一代基站(next generation NodeB，gNB)、第六代(6th generation，6G)移动通信系统中的下一代基站、未来移动通信系统中的基站或WiFi系统中的接入节点等。无线接入网设备还可以是开放式接入网(open RAN，O-RAN或ORAN)、或云无线接入网络(cloud radio access network，CRAN)。无线接入网设备还可以是以上两种或两种以上系统融合的通信系统。无线接入网设备可以是宏基站(如图1中的110a)，也可以是微基站或室内站(如图1中的110b)，还可以是中继节点或施主节点等。
此外，无线接入网设备也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，分布式单元(distributed unit，DU)，CU-控制面(control plane，CP)，CU-用户面(user plane，UP)，或者无线单元(radio unit，RU)等。在不同系统中，CU(或CU-CP和CU-UP)、DU或RU也可以有不同的名称，但是本领域的技术人员可以理解其含义。例如，在ORAN系统中，CU也可以称为O-CU(开放式CU)，DU也可以称为O-DU，CU-CP也可以称为O-CU-CP，CU-UP也可以称为O-CU-UP，RU也可以称为O-RU。为描述方便，本申请中以CU，CU-CP，CU-UP、DU和RU为例进行描述。本申请中的CU(或CU-CP、CU-UP)、DU和RU中的任一单元，可以是通过软件模块、硬件模块、或者软件模块与硬件模块结合来实现。
本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。为了便于描述，下文以基站作为无线接入网设备的例子进行描述。可以理解的是，基站可称为通信装置。例如，基站可以理解为具有基站功能的装置。例如，用于实现基站的功能的装置可以是基站；或者基站中的部分元件，例如，例如CU、DU等。也可以是能够支持基站实现该功能的装置，例如芯片系统、硬件电路、软件模块、或硬件电路加软件模块，该装置可以被安装在基站中或可以与基站匹配使用。在本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。
终端也可以称为终端设备、用户设备(user equipment，UE)、移动台、移动终端等。终端可以广泛应用于各种场景，例如，设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)通信、机器类通信(machine-type communication，MTC)、物联网(internet of things，IOT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、智慧城市等。终端可以是手机、平板电脑、带无线收发功能的电脑、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、智能家居设备等。
本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。可以理解的是，终端可称为通信装置。例如，终端可以理解为具有终端功能的装置。例如，用于实现终端的功能的装置可以是终端；也可以是能够支持终端实现该功能的装置，例如芯片系统、硬件电路、软件模块、或硬件电路加软件模块，该装置可以被安装在终端中或可以与终端匹配使用。
基站和终端可以是固定位置的，也可以是可移动的。基站和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在飞机、气球和人造卫星上。本申请的实施例对基站和终端的应用场景不做限定。
基站和终端的角色可以是相对的，例如，图1中的直升机或无人机120i可以被配置成移动基站，对于那些通过120i接入到无线接入网100的终端120j来说，无人机120i是基站；但对于基站110a来说，120i是终端，即110a与120i之间是通过无线空口协议进行通信的。当然，110a与120i之间也可以是通过基站与基站之间的接口协议进行通信的，此时，相对于110a来说，120i也是基站。因此，基站和终端都可以统一称为通信装置，图1中的110a和110b可以称为具有基站功能的通信装置，图1中的120a-120j可以称为具有终端功能的通信装置。
基站和终端之间、基站和基站之间、终端和终端之间可以通过授权频谱进行通信，也可以通过免授权频谱进行通信，也可以同时通过授权频谱和免授权频谱进行通信；可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线通信所使用的频谱资源不做限定。
在本文没有特殊说明的情况下，以“第一装置”和“第二装置”为执行主体进行描述。
其中“第一装置”可以理解为基站，或具有基站功能的装置，或实现基站功能的装置。例如，第一装置是基站，或者第一装置可以是基站中的模块(例如，芯片或电路等)，还可以是全部或部分实现基站功能的模块或单元(例如，CU、DU或RU)、逻辑模块或者软件等。又或者，“第一装置”可以理解为具有感知能力的设备或装置，或能够执行人工智能任务的设备或装置。其中，具有感知能力的设备又可称为感知设备，能够执行人工智能任务的设备又可称人工智能任务执行设备。
“第二装置”可以理解为终端，或具有终端功能的装置，或实现终端功能的装置。例如，第二装置是终端，或者第二装置可以是终端中的模块(例如，芯片或电路等)。又或者，“第二装置”可以理解为具有感知能力的设备或装置，或能够执行人工智能任务的设备或装置。其中，具有感知能力的设备又可称为感知设备，能够执行人工智能任务的设备又可称人工智能任务执行设备。
“第三装置”可以理解为终端，或具有终端功能的装置，或实现终端功能的装置。例如，第三装置是终端，或者第三装置可以是终端中的模块(例如，芯片或电路等)。又或者，“第三装置”可以理解为具有感知能力的设备或装置，或能够执行人工智能任务的设备或装置。其中，具有感知能力的设备又可称为感知设备，能够执行人工智能任务的设备又可称人工智能任务执行设备。
此外，“第一装置”还可以替换为“第一设备”，或“第一通信装置”；“第二装置”还可以替换为“第二设备”，或“第二通信装置”；“第三装置”还可以替换为“第三设备”，或“第三通信装置”。
在一些可能的实现场景中，“第一装置”可以为“基站”，“第二装置”可以为“终端”，“第三装置”可以为“终端”。例如，在图2中，一个或多个终端可以分别与基站进行通信。终端与基站之间的接口为Uu接口。
在本申请中，“发送”和“接收”，表示信号传递的走向。例如，“向XX发送信息”可以理解为该信息的目的端是XX，“发送信息”可以包括直接发送，也包括通过其他单元或模块间接发送。“接收来自YY的信息”可以理解为该信息的源端是YY，“接收信息”可以包括直接从YY接收，也可以包括通过其他单元或模块间接地从YY接收。另外，“发送”也可以理解为芯片接口的“输出”，“接收”也可以理解为芯片接口的“输入”。换言之，“发送”或“接收”可以是在设备之间进行的，例如，基站和终端之间通过空口分别进行发送或接收，“发送”或“接收”也可以是在设备内进行的，例如，通过总线、走线或接口在设备内的部件之间、模组之间、芯片之间、软件模块或者硬件模块之间发送或接收。
本申请中，非均等压缩(Unequal Compression，UEC)多级映射表或简称为映射表，或简称为多级映射表，或简称为UEC映射表，其仅仅是一种表达形式，并不影响所指代的范围。同时，本申请中映射表所指示的是原生数据(或待压缩数据)和压缩后的压缩码流之间的映射关系，即映射表实际是由映射关系来体现。
无线通信应用场景日益丰富,在未来无线通信系统中会产生很多面向新场景的数据，传输这些新场景的数据也存在新的需求。例如，ISAC、AI使能的无线技术、太赫兹通信等新应用场景所带来的海量数据与信令。所以在例如未来无线电接入网系统中可能存在多种数据类型，需要在不同场景或任务下传输不同数据类型的数据。
未来无线通信过程中会产生大量的原生数据，原生数据可以理解为未来无线通信系统(例如6G)中适用于新涌现应用场景所衍生出的数据，特别是其需要空口传输的无线接入网(Radio Access Network，RAN)数据，或者为RAN内产生的本地数据(local traffic)。其中，原生数据可以简称为数据。原生数据可以包括多种数据类型(以及可能的数据子类型)的数据，例如，感知数据，人工智能数据或信道数据等。示例性地，原生数据或原生数据类型可能包括如下至少一项但不限于如下举例：
第一种是感知数据，如2D或3D成像数据(例如获取的环境反射点、环境面片)、环境重构数据、点云数据、电磁地图、或者定位数据等；
第二种是人工智能数据或者边缘人工智能(edge artificial intelligence)数据，如AI模型数据、训练数据、梯度数据、梯度的更新数据、推理结果、神经网络提取的特征信息、性能数据等；
第三种是信道数据，如信道矩阵(channel matrix)、多天线系统中设备反馈的信道信息、信道状态信息(channel status information，CSI)数据等。
下面以电磁地图为例进行说明。在图1所示的通信系统中，接入网设备中设置有电磁地图。例如，接入网设备通过实测、环境建模+射线追踪(ray tracing，RT)、或人工智能(artificial intelligence，AI)等方式建立电磁地图。电磁地图用于表征环境中的电磁信号分布，它记录特定区域内各种电磁信号的强度和特性。例如，电磁地图可以部分或全部包括但不限于：一个或多个位置的多径信息、噪声水平和频谱占用情况等。例如，电磁地图可以包括规则的区域的信息和/或不规则的区域的信息，每个区域对应一个或多个参考点，对于规则的区域还可称为网格区域，网格区域对应的参考点还可称为网格、或者格点等。
在本申请实施例中并不特殊说明的情况下，电磁地图不同区域中(例如参考点)的信息可以包括多径数据，和/或非多径数据。其中，
1.多径数据在每个区域中(例如参考点)的信息可以有如下形式：
多径信息(比如主径信息、次主径信息、各多径平均值信息等)，可以包括该多径的幅度、时延(delay)和/或角度等信息。
2.非多径数据在每个区域中(例如参考点)的信息可以有如下形式：
表征电磁地图中电磁特性的标量强度标识或散射点信息，例如可以包含如下至少一种具体信息：信道冲击响应(channel impulse response，CIR)、信道质量指示(channel quality indicator，CQI)、功率时延谱(power delay profile，PDP)、角度时延谱(angle delay profile，ADP)、或者散射点/虚拟站的虚拟锚点(virtual anchor)的信息等。
以多径信息为例，接入网设备侧的电磁地图对应至少一个参考点，每个参考点对应一个地理区域，用于表征这个地理区域内接入网设备到终端的多径信息。如图3所示，电磁地图主要包括：
1、N个参考点的电磁地图元素N为大于零的整数。
2、每个参考点的电磁地图元素包括接入网设备与该参考点之间的Mn个路径(path)的多径信息，Mn为大于零的整数。
3、每个路径的多径信息可以包括幅度、时延(delay)和角度。其中，幅度可以以信号的幅度或功率(power)的形式存在。如果接入网设备采用双极化天线，幅度为2*2矩阵，角度包括到达角(angle of arrival，AoA)和离开角(angle of departure，AoD)。进一步，如果天线阵列为均匀线性阵列(uniform linear array，ULA)，AoA和AoD为标量。或者，如果天线阵列为均匀平面阵列(uniform planar array，UPA)，AoA和AoD可以用俯仰角和偏航角表示。在下文的描述中，以“幅度”为“功率”为例，角度包括AoA和AoD为例，进行描述。
对于上述数据，现有技术中有采用字典压缩，矢量量化等基于数据分布的框架进行压缩，也有尝试采用AI模型进行数据压缩的研究和设计。这些方案利用了数据各维度之间的相关性，实现了高性能的压缩效果。
然而，由于对于端到端任务而言，不同数据的特性不同(例如，不同多径对任务的贡献不同，信道矩阵变换后不同流的重要性不同)，例如，在设备需获取的多个数据中，至少一个或多个数据具备不同的特性，如果对每一数据按照相同的压缩策略实现，则无法满足需求；如何针对不同重要性的数据、制定简洁的压缩配置流程，是需要解决的问题。
为此，本申请实施例提供一种数据传输方法及装置。
第一方面，本申请提供一种数据传输方法，该方法用于第一装置，如图4所示包括：
步骤S410：获取第一映射关系以及第一待压缩数据；
可选地，第一装置可以通过以下任意一种或多种形式输出信息：单播、组播、广播；可以理解的是，本申请中，第一装置作为网络设备，具备单播、组播、广播的能力。举例说明，当网络设备向多个终端传输信息时，网络设备可通过广播的方式向各个终端发送其相同部分的信息(例如基础信息)，而对于终端专属部分的信息(例如增强信息)，则采用单播或组播的方式；例如基站同时与终端A,终端B，终端C，终端D进行数据传输，对于各终端相同的基础信息部分则使用广播的方式进行传输(如广播基础信息部分至终端A,终端B，终端C，终端D)，而对于增强信息部分，则采用单播的形式传输(如分别发送终端A、终端B、终端C以及终端D的增强信息至终端A、终端B、终端C以及终端D)；在一种可能的实现中，终端A和终端B的增强信息部分相同，则可以通过组播的形式发送其相同的增强信息至终端A和终端B，而对于终端C、终端D，则仍然通过单播的方式发送。
可以理解的是，第一映射关系的获取可以有多种方式：
A.第一映射关系可以由第一装置生成；例如，由第一装置根据数据特性生成；示例性地，数据特性包括以下至少一项：电磁地图区域中的参考点的各径功率(power)，电磁地图区域中的参考点的各径延迟(delay)，电磁地图区域中的参考点的各径到达角(AOA)，电磁地图区域中的参考点的各径离开角(AOD)。
B.第一映射关系可由协议约定；例如，在相关协议中约定好映射关系，从而在实际通信中，发送端和接收端分别按照协议中约定的映照关系进行压缩以及解压。
C.第一映射关系可以来自其他装置；例如，从第二装置或第三装置中获取；
D.第一映射关系可以由上层信令通知；示例性地，通过RRC，MAC CE等高层信令告知；或是DCI信令告知；
可以理解的是，本申请中涉及的数据(或称原生数据、待压缩数据)可以包括基本信息部分以及增强信息部分，其中基本信息部分(或称粗粒度部分)通常包含重要程度较高的信息，例如频点信息、小区ID、RACH参数等；而对于增强信息部分(或称细粒度部分)，其通常包含重要程度较低，或选择性获得的信息，例如流量额度、网络带宽、网络延迟等；
示例性地，如图5所示，其中待压缩数据被映射表划分为基本信息部分和增强信息部分，其中，增强信息部分又进一步划分为优先级1部分和优先级2部分；应当理解的是，图5中的数据格式仅仅是一种示例，并不作为本申请的唯一限定，图5中仅对增强信息部分进行了优先级划分，而实际操作中基本信息部分同样可以进行优先级划分，例如将基本信息部分也划分为优先级1、优先级2部分；同时，优先级部分也不仅限于2种(可小于或大于)，例如可以仅有一个优先级1(即不对优先级进行划分)，也可以有优先级1，优先级2，优先级3，优先级4…优先级n；即，基本信息部分和增强信息部分均可划分为不同优先级部分，其数量可以是任意整数；可以理解的是，不同优先级的信息可以在不同的传输资源中进行传输，例如，可以先传输优先级高的信息，后传输优先级低的信息，其二者的传输可以在不同的传输资源中进行。
示例性地，第一待压缩数据包括基本信息数据。
步骤S420：基于第一映射关系对第一待压缩数据进行压缩以获得第一压缩码流；
可以理解的是，本申请中数据压缩可以支持多种不同的压缩方案，包括但不限于：基于DFT的码本压缩方案；基于预测的差分压缩方案；基于数据分布的压缩方案；基于AI的压缩方案等。
其中，第一映射关系的体现可以是通过任何形式，例如，将映射关系承载于映射表、数组或矩阵以体现；同时，映射关系包括一一映射，或一对多映射；对于一对多映射的映射表，可以发送bitmap指示所传输的维度，例如:N*M的映射表指示N*M*4(Delay、Power、AoA、AoD)的RFMAP，可以发送[0,0,1,1]和优先级标识2以指示传输的是优先级为2的N*M维的AOA和AOD数据。
可选地，可以将相同优先级部分一同进行压缩以提高压缩效率。
步骤S430：向第二装置输出第一信息，第一信息包含第一压缩码流；
可选地，第一信息包含第一映射关系；即在向第二装置输出压缩码流时，将相应的映射关系也一同发送，从而使得第二装置可以基于该映射关系将相应压缩码流进行解压。
示例性地，压缩码流通过PDSCH、PDCCH、PUSCH或PUCCH进行传输；第一映射关系通过PDSCH、PDCCH、PUSCH、PUCCH，或MAC CE、RRC进行传输。
示例性地，第一装置可以在输出压缩码流前输出第一映射关系；或，第一装置可以在输出压缩码流后输出第一映射关系；或，第一装置可以在输出压缩码流时一同输出第一映射关系，且压缩码流可以在第一映射关系前，或在第一映射关系后。
可选地，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输；即在多级映射表的支持下，原始数据可以进行增量的压缩传输；例如，基站向终端广播RFMAP的场景，可首先广播粗粒度的RFMAP，再广播细粒度的RFMAP。
在一种可能的实现中，压缩码流按照规定的顺序逐个传输，其中，规定的顺序可以包括：先传输高优先级部分对应的压缩码流，后续传输次优先级部分对应的压缩码流；或，先传输次优先级部分对应的压缩码流，后续传输高优先级部分对应的压缩码流。例如图6A至图6B所示：
A.多级映射表和压缩码流一起传输时，按照规定的顺序逐个传输，映射表在高优先级压缩码流前和高优先级压缩码流一起传输，后续传输次优先级的压缩码流。
B.多级映射表和压缩码流解耦传输时，按照规定的顺序逐个传输，映射表在高优先级压缩码流前传输，后续逐个传输各优先级的压缩码流。
在另一种可能的实现中，压缩码流可以和对应的优先级标识一起传输，优先级标识用于指示压缩码流的传输优先级；示例性地，可通过如下方式实现：第一信息还包含第一优先级标识，第一优先级标识用于指示第一压缩码流的传输优先级；和/或，第二信息还包含第二优先级标识，第二优先级标识用于指示第二压缩码流的传输优先级；和/或，第三信息还包含第三优先级标识，第三优先级标识用于指示第三压缩码流的传输优先级；如图6C-图6D所示：
C.多级映射表和压缩码流一起传输时，随着增量数据额外传输优先级指示，其中映射表在高优先级压缩码流前和高优先级压缩码流一起传输。
D.多级映射表和压缩码流解耦传输时，随着增量数据额外传输优先级指示，映射表在高优先级压缩码流前传输，后续传输各优先级的压缩码流时通过优先级指示向接收端指示。
在另一种可能的实现中，同一待压缩数据的压缩码流可以有一个或多个映射关系。进一步地，当同一待压缩数据的压缩码流有多个映射关系时，压缩码流可以按照以下任意一种或多种方式处理：对映射关系进行加权合并，或择一，或预测。具体地，例如图6E所示：
E.同一个数据源的增量数据可以有不同的映射表，接收端在接收到相同数据的不同优先级版本后可以根据对应位置数据的不同优先级的重建版本进行相应的处理，其处理包括但并不限于以下任意一项或多项：加权合并、择一、预测。
在一种可能的实现中，具备不同优先级标识的压缩码流可以合并输出；其中，优先级标识合并指示，或分开指示；如图7所示：优先级1压缩码流的优先级1和优先级2压缩码流的优先级2可以合并发送(如图7上)，或分开发送(如图7下)。
在一种可能的实现中，压缩码流以单次输出，并包含不同优先级标识的压缩码流；或，压缩码流分多次输出，并每次包含不同优先级标识的压缩码流。
步骤S440：获取第二待压缩数据以及第二映射关系；
该步骤中可以采用与上述步骤S410相同的策略，因此相同部分不再赘述。下面仅对区别部分进行详细说明：
示例性地，第二待压缩数据包括增强信息数据。
可以理解的是，第二映射关系与第一映射关系可以相同，也可以不同；
示例性地，当第一映射关系与第二映射关系相同时，第一装置可直接对第二待压缩数据基于当前映射关系(第一映射关系)进行压缩，并将压缩获得的压缩码流向第二装置输出；如图8所示，为当第一映射关系与第二映射关系相同时的传输程图；图8中，第一装置为BS，第二装置和第三装置分别为UE1和UE2；可以理解的是，第一装置作为网络设备，可以实现广播，组播，单播等操作。
图8中，首先，第一装置(BS)获取数据，并根据数据特性和/或配置获取映射表；可以理解的是，此处的数据可以是仅包含基本信息部分的数据，也可以是包含基本信息部分和增强信息部分的完整数据，该实施例中以后者为例进行说明；需要主意的是，若该数据仅包含基本信息部分，那么后续增强信息部分可以通过其他途径获取，如图9所示：该实施例中输出增强信息之前的步骤与图8中相同，此处不再赘述，下面重点对增强信息部分的获取进行详细说明；
如图9所示，第一装置为BS，第二装置为UE1，其中，第一装置(BS)在向第二装置(UE1)广播基本信息后，才获取后续优先级的信息(增强信息)，并进行相应发送；具体地，第一装置可以是在获取增强映射表(例如，表中“0”指示基本信息部分，“1”、“2”指示增量信息部分，且“2”指示的优先级大于“1”)后对所获取的增强信息进行压缩以得到增强信息的压缩码流；随后，第一装置(BS)向第二装置(UE1)发送增强信息的压缩码流；示例性地，如图9所示，发送的信息包括：增强映射表与优先级1压缩码流、优先级标识2与优先级2压缩码流、优先级标识N与优先级N压缩码流。
示例性地，基本信息部分和增强信息部分的位置可由映射表进行指示，如图8所述，映射表中“0”的位置便是基本信息部分，“1”和“2”的位置是增强信息部分；
随后，第一装置(BS)从数据中获取基本信息部分，并基于该映射表的映射关系对基本信息部分进行压缩以获得基本信息压缩码流(图中映射表用“0”指示)，并将映射表和基本信息码流输出至第二装置(UE1)和/或第三装置(UE 2)；可以理解的是，此处映射表的发送并非必选项，在一种可能的实现中，接收端(例如第二装置(UE1)、第三装置(UE2))可以从别处获取映射表，当前实施例仅提供一种可能性的实现，并非对本申请作出唯一限定；
示例性地，当第一信息不包含第一映射关系时，第一装置按照标准或上层信令的约定按顺序输出数据以确保第二和/或第三装置能准确地获取压缩码流，例如广播、组播或单播的形式。
随后，第一装置(BS)继续输出后续增强信息；如图8所示，第一装置(BS)从数据中获取针对第二装置(UE1)和/或第三装置(UE2)的增强信息部分，并基于相应映射表的映射关系对第二装置(UE1)和/或第三装置(UE2)的增强信息部分进行压缩以获得各自的增强信息压缩码流；在一种可能的实现中，第一装置(BS)在输出增强数据前分别获取针对第二装置(UE1)和/或第三装置(UE 2)的新的映射表，由于该实施例中第二装置(UE1)和/或第三装置(UE 2)的新的映射表与当前映射表相同，因此第一装置更新后得到的第二装置(UE1)和/或第三装置(UE 2)的新的映射表仍然是当前的映射表，因此可基于当前映射表的映射关系对第二装置和/或第三装置各自的增强信息部分进行压缩以获得各自的增强信息压缩码流；
在一种可能的实现中，如图8所示，可以将增强信息码流分多次发输出，且每次输出包含不同优先级部分的压缩码流，例如优先级1压缩码流(图中映射表用“1”指示)和优先级1标识一同输出，优先级2压缩码流与优先级标识2一同输出(图中映射表用“2”指示)...优先级N压缩码流和优先级标识N一同输出；可以理解的是，此处同样可以将增强信息码流分单次输出，在发送中包含不同优先级部分的压缩码流；同时，上述增强信息的发送方式，同样适用于基本信息的输出，即基本信息也可以分多次输出或单次输出，并在输出中指示相应优先级；
示例性地，对于压缩后的增强信息部分的压缩码流(例如第二压缩码流)，若不存在映射关系指示(例如第二信息中不包含第二映射关系)，则需在压缩码流前进行优先级指示(例如通过优先级标识Index指示)，以指示压缩码流的输出优先级；若不存在映射关系指示，且无优先级指示，则第一装置按照标准或上层信令中约定的优先级顺序根据映射表进行输出，以确保第二和/或第三装置对压缩码流的准确获取。
之后，第一装置(BS)向第二装置(UE1)和/或第三装置(UE 2)输出增强数据压缩码流。
示例性地，当第一映射关系和第二映射关系不同时，第一装置需获得与第二待压缩数据对应的映射关系，并在获得后对第二待压缩数据基于新的映射关系(第二映射关系)进行压缩，并将压缩获得的压缩码流向第二装置输出，如图10所示。
图10为当第一映射关系与第二映射关系不同时的传输流程图；图10中，第一装置为BS，第二装置和第三装置分别为UEA、UEB；可以理解的是，第一装置作为网络装置，可以实现广播，组播，单播等操作；该实施例中输出增强信息之前的步骤与图8中相同，此处不再赘述，下面重点对增强信息部分的输出进行详细说明；
第一装置(BS)广播基本信息后，继续广播后续增强信息；如图10所示，第一装置(BS)从数据中获取增强信息部分，并基于新的映射表中的映射关系对增强信息部分进行压缩以获得增强信息压缩码流；在一种可能的实现中，第一装置(BS)在输出增强数据前针对第二装置(UEA)和/或第三装置(UEB)分别获取新的映射表，如图10所示，第一装置获取针对第二装置(UE A)增强信息部分的映射表A，和/或针对第三装置(UE B)增强信息部分的映射表B，并分别基于各自映射表中的映射关系对各自的增强信息部分进行压缩以获得各自增强信息部分的压缩码流；
对于增强信息的输出，在一种可能的实现中，如图10所示，可以将增强信息码流分多次输出，且每次输出包含不同优先级部分的压缩码流；例如图中所示，对于第二装置(UE A)，优先级A1压缩码流(图中映射表用“1”指示)和映射表A一同发送，优先级A2压缩码流与优先级标识A2一同发送(图中映射表用“2”指示)；对于第三装置(UE B)，优先级B1压缩码流(图中映射表用“1”指示)和映射表B一同输出，优先级B2压缩码流与优先级标识B2一同输出(图中映射表用“2”指示)，优先级B3压缩码流与优先级标识B3一同输出(图中映射表用“3”指示)；可以理解的是，此处同样可以将增强信息码流分单次输出，在发送中包含不同优先级部分的压缩码流；同时，对于增强信息的输出方式，同样适用于上述基本信息的输出，即基本信息也可以分多次或单次并指示优先级的形式进行输出；
之后，第一装置(BS)向第二装置(UEA)和/或第三装置(UE B)输出增强数据压缩码流。
通过上述实现，基站可以先广播各UE RFMAP的相同部分(即粗粒度RFMAP部分，或基础信息部分)，再根据实际任务需求分别向不同UE发送各自RFMAP的专属部分(即细粒度RFMAP部分，或增强信息部分)，进而提高传输资源利用率。
可选地，第一装置可以获取来自第二装置的反馈信息，并基于该反馈信息获得第二映射关系；和/或，获取来自第三装置的反馈信息，并基于该反馈信息获得第三映射关系。
示例性地，从第二装置获取的反馈信息包括：第二待压缩数据对应的映射关系；和/或，区域指示信息；从第三装置获取的反馈信息包括：第三待压缩数据对应的映射关系；和/或，区域指示信息。
例如，如图11所示(图中与前面实施例相同部分不再赘述；例如该实施例中输出增强信息之前的步骤与图8、图10中相同，因此不再赘述)；其中第一装置为BS，第二装置为UE1，第三装置为UE2；第一装置(BS)可以获取来自第二装置(UE1)的反馈信息，并基于该反馈信息获得第二映射关系；和/或，第一装置(BS)获取来自第三装置(UE2)的反馈信息，并基于该反馈信息获得第三映射关系。
在一种可能的实现中，反馈信息可以是新的映射关系；例如，图11中第二装置(UE1)直接向第一装置(BS)输出新的映射表，从而使得第一装置(BS)直接根据获得的映射表更新针对第二装置(UE1)增量信息部分的映射关系；可以理解的是，当反馈信息是映射关系时，默认反馈设备侧(UE1)已知晓该映射关系，因此后续第一装置(BS)不需要再发送映射关系。
在另一种可能的实现中，反馈信息可以是区域指示信息，用于指示第二装置(UE1)和/或第三装置(UE2)所关注的数据部分，例如：
i.RFMAP中的地理信息等，例如building；BS会优先发送building相关的数据；
ii.RFMAP中的坐标信息等，例如22.65,114.06；BS会优先发送该坐标附近的数据；
iii.RFMAP的Index信息等，例如24，15,9,9；BS会优先发送RFMAP中(24,15)参考点周围9*9参考点的数据；
iv.Pattern指示，Pattern提前通过上层信令配置，比如BS会根据提前约定好的Pattern Set中的10号pattern进行传输；其中Pattern Set可以通过RRC，MAC CE等进行配置；
例如图11中，第三装置(UE2)向第一装置(BS)输出区域指示，从而使得第一装置(BS)根据区域指示更新针对第三装置(UE2)增量信息部分的映射关系；
随后，第一装置(BS)向第二装置(UE1)输出压缩码流(优先级标识A1与优先级A1压缩码流；优先级标识A2与优先级A2压缩码流)；和/或，第一装置(BS)向第三装置(UE2)输出新的映射关系(映射表B)以及压缩码流(优先级标识B1与优先级B1压缩码流；优先级标识B2与优先级B2压缩码流；优先级标识B3与优先级B3压缩码流)；可以理解的是，上述实施例仅作为示例性说明，实际第一装置(BS)也可向第二装置(UE1)发送未更新的映射表。
进一步地，获取第二待压缩数据包括：根据第二装置的反馈信息获取第二待压缩数据；获取第三待压缩数据包括：根据第三装置的反馈信息获取第三待压缩数据。
步骤S450：基于第二映射关系对第二待压缩数据进行压缩以获得第二压缩码流；
可以理解的是，该步骤中可以采用与上述步骤S420相同的策略，因此相同部分不再赘述。
步骤S460：向第二装置输出第二信息，第二信息包含第二压缩码流；
可以理解的是，该步骤中可以采用与上述步骤S430相同的策略，因此相同部分不再赘述，下面仅对区别部分进行描述。
示例性地，在第二压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定；
可选地，第二信息包含第二映射关系；即在向第二装置输出压缩码流时，将相应的映射关系也一同发送，从而使得第二装置可以基于该映射关系将相应压缩码流进行解压。
其中，第一待压缩数据和第二待压缩数据包括多径数据和/或非多径数据；第一映射关系指示第一待压缩数据的第一优先级部分；第二映射关系指示第二待压缩数据的第一优先级部分；其中，第一待压缩数据的第一优先级部分对应第一待压缩数据的第一压缩精度，第二待压缩数据的第一优先级部分对应第二待压缩数据的第一压缩精度。
可以理解的是，待压缩数据可以是任何原生数据，例如6G原生数据；获取的待压缩数据既可以是规则数据，也可以是不规则数据；
在一种可能的实现中，当区域中仅包含非多径数据，或仅包含径数相同的多径数据时，该区域中的数据为规则数据；例如，如图12A所示的数据为规则数据，该数据分布在G区域中，其中G区域中的6个参考点(或称为格点)(pos 1-pos 6)有相同的多径数。
如图12A所示，以各参考点(或称为格点)多径数相同的RFMAP G为例进行说明；图12A中，第一装置根据功率(power)分布生成非均等压缩UEC映射表，该映射表用于指示第一映射关系；其中，6个参考点(或称为格点)的多径数相同；
生成映射表时，将待压缩数据分为两个优先级，即高优先级和低优先级；其中，高优先级部分用“1”进行指示，低优先级部分用“0”进行指示；本实施例中，对于高优先级部分，采用更多的比特进行指示以保证重建精度，即对于高优先级部分使用更高的压缩精度，而对于低优先级部分，则采用较少比特，以保证速率，即对于低优先级部分可以使用较低压缩精度。可以理解的是，上述映射规则仅仅是示例性说明，并不作为本发明的唯一限定；本发明中，对于高优先级部分可以使用高压缩精度进行压缩实现，对于次优先级部分可以使用较低压缩精度进行压缩实现。
随后，第一装置根据该映射表对多径数据进行压缩，以获得压缩码流。需注意的是，获得的压缩码流可能是量化，VQ、矩阵分解等处理后的结果；同时RFMAP每个属性维度都要进行相应配置的压缩，例如图12A中分别从功率(power)、时延(delay)、到达角(AOA)、离开角(AOD)四个维度进行压缩，分别获得其相应的压缩码流。
可以理解的是，RFMAP每个属性维度可以有相同的压缩配置，也可以有不同的压缩配置；例如，每个属性维度有特定的压缩配置，示例性地，在优先级为1时，对于功率(power)、时延(delay)用10bit量化，对于到达角(AOA)、离开角(AOD)用5bit量化。
在另一种可能的实现中，当区域中既有包含非多径数据，又有包含多径数据；或，当区域中包含径数不同的多径数据时，该区域中的数据为不规则数据。例如，如图12B所示的数据为不规则数据，其中G区域中6个参考点(或称为格点)(pos 1-pos 6)的数据具备不同的多径数。
图12B以各参考点(或称为格点)多径数不同的RFMAP G为例进行说明。图12B中，第一装置根据功率(power)分布生成非均等压缩UEC映射表，该映射表用于指示第一映射关系；其中，6个参考点(或称为格点)的多径数不同，例如第三参考点(或称为格点)具有6个参考点(或称为格点)中最大的多径数，第五参考点(或称为格点)具有6个参考点(或称为格点)中最小的多径数；可以理解的是，映射表可以以最大多径数作为维度来生成；
生成映射表时，将待压缩数据分为两个优先级，即高优先级和低优先级；其中，高优先级部分用“2”进行指示，低优先级部分用“1”进行指示，而对于空缺部分，例如第五参考点(或称为格点)相较于第三参考点(或称为格点)空缺的部分，使用“0”进行填充(padding)，即“0”代表补零，对应无信息。该实施例中，对于高优先级部分，采用更多的比特进行指示以保证重建精度，即对于高优先级部分使用更高的压缩精度；而对于低优先级部分，则采用较少比特，以保证速率，即对于低优先级部分可以使用较低压缩精度。可以理解的是，上述映射规则仅仅是示例性说明，并不作为本发明的唯一限定。本发明中，对于高优先级部分可以使用高压缩精度进行压缩实现，对于次优先级部分可以使用较低压缩精度进行压缩实现。
随后，第一装置根据该映射表对多径数据进行压缩，以获得压缩码流。需注意的是，获得的压缩码流可能是量化，VQ、矩阵分解等处理后的结果；同时RFMAP每个属性维度都要进行相应配置的压缩，例如图12B中分别从功率(power)、时延(delay)、到达角(AOA)、离开角(AOD)四个维度进行压缩，分别获得其相应的压缩码流。
可以理解的是，RFMAP每个属性维度可以有相同的压缩配置，也可以有不同的压缩配置；例如，每个属性维度有特定的压缩配置，示例性地，在优先级为1时，对于功率(power)、时延(delay)用10bit量化，对于到达角(AOA)、离开角(AOD)用5bit量化。
可以理解的是，第一映射关系还可以指示第一待压缩数据的第二优先级部分、第三优先级部分、第四优先级部分，乃至第N优先级部分；和/或，第二映射关系还可以指示第二待压缩数据的第二优先级部分、第三优先级部分、第四优先级部分，乃至第N优先级部分；和/或，第三映射关系还可以指示第三待压缩数据的第二优先级部分、第三优先级部分，第四优先级部分，乃至第N优先级部分；其中，第一待压缩数据的第二优先级部分对应第一待压缩数据的第二压缩精度，第一待压缩数据的第三优先级部分对应第一待压缩数据的第三压缩精度，第一待压缩数据的第四优先级部分对应第一待压缩数据的第四压缩精度…第一待压缩数据的第N优先级部分对应第一待压缩数据的第N压缩精度；第二待压缩数据的第二优先级部分对应第二待压缩数据的第二压缩精度，第二待压缩数据的第三优先级部分对应第二待压缩数据的第三压缩精度，第二待压缩数据的第四优先级部分对应第二待压缩数据的第四压缩精度…第二待压缩数据的第N优先级部分对应第二待压缩数据的第N压缩精度；第三待压缩数据的第二优先级部分对应第三待压缩数据的第二压缩精度，第三待压缩数据的第三优先级部分对应第三待压缩数据的第三压缩精度，第三待压缩数据的第四优先级部分对应第三待压缩数据的第四压缩精度…第三待压缩数据的第N优先级部分对应第三待压缩数据的第N压缩精度。
示例性地，第一待压缩数据的第一压缩精度可以高于第一待压缩数据的第二压缩精度；第二待压缩数据的第一压缩精度可以高于第二待压缩数据的第二压缩精度；第三待压缩数据的第一压缩精度可以高于第三待压缩数据的第二压缩精度。可以理解的是，此时的第一优先级可以大于或小于第二优先级，实际使用时可根据情况进行灵活调整，具体视优先级标准如何定义，例如以下两种情况：
情况1：即当第一优先级大于第二优先级时，第一优先级(高优先级)部分采用更高的压缩精度进行压缩，此时的优先级标准可以为数据完整性或精度，因此对于第一优先级(即高优先级)部分使用更高的压缩精度进行压缩以保证数据还原度，例如使用更多的比特进行压缩指示；常见的场景例如在增强移动宽带(Enhanced Mobile Broadband，eMBB)场景中，用户对数据完整性更敏感，因此将数据内容的完整性视为优先级标准，此时对高优先级部分的压缩宜使用更高压缩精度压缩以保证还原精度。
情况2：即当第一优先级小于第二优先级时，第二优先级(高优先级)部分采用更低压缩精度进行压缩，此时的优先级标准可以是数据传输速率或时延，因此对于第二优先级(高优先级)部分采用更低压缩精度进行压缩以保证传输速率或时延，例如采用更少比特进行压缩指示；常见场景例如在超高可靠性低时延通信(Ultra-Reliable Low-Latency Communication，URLLC)场景中，用户对数据时延更敏感，因此将数据时延视为优先级，此时对高优先级数据的压缩宜使用更低压缩精度以降低传输延迟。
可选地，本申请中该方法还可以包括：向第三装置输出第一信息，第一信息包含第一压缩码流；获取第三待压缩数据以及第三映射关系；基于第三映射关系对第三待压缩数据进行压缩以获得第三压缩码流；向第三装置输出第三信息，其中第三信息包含第三压缩码流；第三映射关系指示第三待压缩数据的第一优先级部分；第三待压缩数据的第一优先级部分对应第三待压缩数据的第一压缩精度；第三待压缩数据包括多径数据和/或非多径数据。示例性地，可参见上述图8、图10、图11中任意一项的描述。
示例性地，第三待压缩数据包括增强信息数据。
可选地，第三信息包含第三映射关系；即在向第三装置输出压缩码流时，将相应的映射关系也一同发送，从而使得第三装置可以基于该映射关系将相应压缩码流进行解压。
示例性地，在第三压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定。
以上从第一装置侧(即网络设备端)，对本申请中的数据传输方法进行了描述，下面对第二装置侧(即终端侧)的相应方法进行描述。可以理解的是，本申请中适用于网络设备侧的相应方法，同样适用于终端设备侧，或对本领域技术人员而言，仅需对网络设备侧相应方法做简单调整便可实现于终端设备侧，因此相同部分不再赘述。
第二方面，本申请提供一种数据传输方法，如图4所示，该方法应用于第二装置，包括：
步骤S430：获取第一信息，第一信息包含第一压缩码流；第一压缩码流由第一装置基于第一映射关系对第一待压缩数据进行压缩获得；
步骤S460：获取第二信息，第二信息包含第二压缩码流；第二压缩码流由第一装置基于第二映射关系对第二待压缩数据进行压缩获得；
其中，所述第一待压缩数据和所述第二待压缩数据包括多径数据和/或非多径数据；所述第一映射关系指示所述第一待压缩数据的第一优先级部分；所述第二映射关系指示所述第二待压缩数据的第一优先级部分；
其中，所述第一待压缩数据的第一优先级部分对应所述第一待压缩数据的第一压缩精度，所述第二待压缩数据的第一优先级部分对应所述第二待压缩数据的第一压缩精度；
步骤S470：基于相应映射关系对压缩码流进行相应解压。
可以理解的是，第二装置、第三装置均为终端侧设备；因此，上述第二装置可以替换为第三装置；同样地，适用于第二装置的相应方法也同样适用于第三装置。
上述本申请提供的实施例中，分别从第一装置和第二装置/第三装置的角度，对本申请实施例提供的方法进行了介绍。为了实现本申请实施例提供的方法中的各功能，终端或接入网设备等，可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能究竟以硬件结构、软件模块、或者硬件结构加软件模块的方式来执行，取决于技术方案的特定应用的设计约束条件。
为此，第三方面，本申请实提供一种可能的通信装置的结构示意图，如图13所示。这些通信装置可以实现上述方法实施例中的一个或多个对应的功能。例如，由第一通信装置或第二通信装置等实现的功能，因此可能实现上述方法实施例所具备的有益效果。在本申请实施例中，该通信装置可以是终端或接入网设备，或者，该通信装置可以是应用于终端或接入网设备中的模块(如芯片)。
如图13所示，通信装置1300包括处理单元1310和收发单元1320。通信装置1300用于实现上述图4方法实施例中第一装置或第二装置的功能。可选地，收发单元1320还可称为输出单元、接口单元、或通信单元等。在一种可能的实现方式中，收发单元1320包括发送单元或接收单元中的至少一个。发送单元和接收单元可以集成在一起，或者是两个独立的单元等。
当通信装置1300用于图4中第一装置(例如BS)的功能时，具体的：
收发单元1320，获取第一映射关系以及第一待压缩数据；向第二装置输出第一信息，第一信息包含第一压缩码流；获取第二待压缩数据以及第二映射关系；向第二装置输出第二信息，第二信息包含所述第二压缩码流；
处理单元1310，基于第一映射关系对第一待压缩数据进行压缩以获得第一压缩码流；基于第二映射关系对第二待压缩数据进行压缩以获得第二压缩码流；
其中，第一待压缩数据和第二待压缩数据包括多径数据和/或非多径数据；第一映射关系指示第一待压缩数据的第一优先级部分；第二映射关系指示第二待压缩数据的第一优先级部分；其中，第一待压缩数据的第一优先级部分对应第一待压缩数据的第一压缩精度，第二待压缩数据的第一优先级部分对应第二待压缩数据的第一压缩精度。
在一种可能的实现中，还包括：收发单元1320，向第三装置输出第一信息，第一信息包含第一压缩码流；获取第三待压缩数据以及第三映射关系；基于第三映射关系对第三待压缩数据进行压缩以获得第三压缩码流；向第三装置输出第三信息，第三信息包含第三压缩码流；第三映射关系指示第三待压缩数据的第一优先级部分；其中，第三待压缩数据包括多径数据和/或非多径数据；第三待压缩数据的第一优先级部分对应第三待压缩数据的第一压缩精度。
在一种可能的实现中，第一映射关系还指示第一待压缩数据的第二优先级部分；和/或，第二映射关系还指示第二待压缩数据的第二优先级部分；和/或，第三映射关系还指示第三待压缩数据的第二优先级部分；
其中，第一待压缩数据的第二优先级部分对应第一待压缩数据的第二压缩精度；第二待压缩数据的第二优先级部分对应第二待压缩数据的第二压缩精度；第三待压缩数据的第二优先级部分对应第三待压缩数据的第二压缩精度；
第一待压缩数据的第一压缩精度高于第一待压缩数据的第二压缩精度；第二待压缩数据的第一压缩精度高于第二待压缩数据的第二压缩精度；第三待压缩数据的第一压缩精度高于第三待压缩数据的第二压缩精度。
在一种可能的实现中，第二映射关系、第三映射关系以及第一映射关系，相同，或不同。
在一种可能的实现中，获取第二映射关系和/或第三映射关系具体包括：收发单元1320，获取来自第二装置的反馈信息，基于该反馈信息获得第二映射关系；和/或，获取来自第三装置的反馈信息，基于该反馈信息获得第三映射关系。
在一种可能的实现中，从第二装置获取的反馈信息包括：第二待压缩数据对应的映射关系；和/或，区域指示信息；从第三装置获取的反馈信息包括：第三待压缩数据对应的映射关系；和/或，区域指示信息。
在一种可能的实现中，从第二装置获取的反馈信息中的区域指示信息包括一下任意一项或多项：第二待压缩数据中的地理信息、坐标信息、pattern指示、Index信息；从第三装置获得的反馈信息中的区域指示信息包括一下任意一项或多项：第三待压缩数据中的地理信息、坐标信息、pattern指示、Index信息。
在一种可能的实现中，获取第二待压缩数据包括：收发单元1320，根据第二装置的反馈信息获取第二待压缩数据；获取第三待压缩数据包括：收发单元1320，根据第三装置的反馈信息获取第三待压缩数据。
在一种可能的实现中，第一待压缩数据、第二待压缩数据以及第三待压缩数据是同时获取的，或不同时获取的。
在一种可能的实现中，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输。
在一种可能的实现中，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：收发单元1320，先传输高优先级部分对应的压缩码流，后续传输次优先级部分对应的压缩码流；或，先传输次优先级部分对应的压缩码流，后续传输高优先级部分对应的压缩码流。
在一种可能的实现中，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：第一信息还包含第一优先级标识，第一优先级标识用于指示第一压缩码流的传输优先级；和/或，第二信息还包含第二优先级标识，第二优先级标识用于指示第二压缩码流的传输优先级；和/或，第三信息还包含第三优先级标识，第三优先级标识用于指示第三压缩码流的传输优先级。
在一种可能的实现中，还包括：具备不同优先级标识的压缩码流合并输出；其中，优先级标识合并指示，或分开指示。
在一种可能的实现中，压缩码流以单次输出，并包含不同优先级标识的压缩码流；或，压缩码流分多次输出，并每次包含不同优先级标识的压缩码流。
在一种可能的实现中，还包括：第一信息包含第一映射关系；和/或，第二信息包含第二映射关系；和/或，第三信息包含第三映射关系。
在一种可能的实现中，第一映射关系还指示第一待压缩数据的第三优先级部分；和/或，第二映射关系还指示第二待压缩数据的第三优先级部分；和/或，第三映射关系还指示第三待压缩数据的第三优先级部分；其中，第一待压缩数据的第三优先级部分对应第一待压缩数据的第三压缩精度；第二待压缩数据的第三优先级部分对应第二待压缩数据的第三压缩精度；第三待压缩数据的第三优先级部分对应第三待压缩数据的第三压缩精度。
在一种可能的实现中，还包括：在第二压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定；在第三压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定。
在一种可能的实现中，还包括：通过以下任意一种或多种形式输出信息：单播、组播、广播。
当通信装置1300用于图4中的第二装置(例如UE)的功能时，具体的：
收发单元1320，获取第一信息，第一信息包含第一压缩码流；第一压缩码流由第一装置基于第一映射关系对第一待压缩数据进行压缩获得；获取第二信息，第二信息包含第二压缩码流；第二压缩码流由第一装置基于第二映射关系对第二待压缩数据进行压缩获得；
其中，第一待压缩数据和第二待压缩数据包括多径数据和/或非多径数据；第一映射关系指示第一待压缩数据的第一优先级部分；第二映射关系指示第二待压缩数据的第一优先级部分；
其中，第一待压缩数据的第一优先级部分对应第一待压缩数据的第一压缩精度，第二待压缩数据的第一优先级部分对应第二待压缩数据的第一压缩精度；
处理单元1310，基于相应映射关系对相应压缩码流进行解压。
在一种可能的实现中，第一映射关系还指示第一待压缩数据的第二优先级部分；和/或，第二映射关系还指示第二待压缩数据的第二优先级部分；其中，第一待压缩数据的第二优先级部分对应第一待压缩数据的第二压缩精度；第二待压缩数据的第二优先级部分对应第二待压缩数据的第二压缩精度；第一待压缩数据的第一压缩精度高于第一待压缩数据的第二压缩精度；第二待压缩数据的第一压缩精度高于第二待压缩数据的第二压缩精度。
在一种可能的实现中，第二映射关系与第一映射关系相同，或不同。
在一种可能的实现中，还包括：收发单元1320，向第一装置输出反馈信息，以使得第一装置基于反馈信息获得第二映射关系。
在一种可能的实现中，反馈信息具体包括：第二待压缩数据对应的映射关系；和/或，区域指示信息。
在一种可能的实现中，区域指示信息包括以下任意一项或多项：第二待压缩数据中的地理信息、坐标信息、pattern指示、Index信息。
在一种可能的实现中，第一待压缩数据和第二待压缩数据是第一装置同时获取的，或不同时获取的。
在一种可能的实现中，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输。
在一种可能的实现中，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：第一信息还包含第一优先级标识，第一优先级标识用于指示第一压缩码流的传输优先级；和/或，第二信息还包含第二优先级标识，第二优先级标识用于指示第二压缩码流的传输优先级。
在一种可能的实现中，还包括：具备不同优先级标识的压缩码流合并发送；其中，优先级标识合并指示，或分开指示。
在一种可能的实现中，压缩码流以单次输出，并包含不同优先级标识的压缩码流；或，压缩码流分多次输出，并每次包含不同优先级标识的压缩码流。
在一种可能的实现中，还包括：第一信息包含第一映射关系；和/或，第二信息包含第二映射关系。
在一种可能的实现中，所述第一映射关系还指示所述第一待压缩数据的第三优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第三优先级部分；其中，第一待压缩数据的第三优先级部分对应第一待压缩数据的第三压缩精度；第二待压缩数据的第三优先级部分对应第二待压缩数据的第三压缩精度。
在一种可能的实现中，还包括：在第二压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定。
有关处理单元1310和收发单元1320更详细的描述可以参考上文方法实施例中图4中的描述，这里不加赘述。
可以理解的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请实施例中的各个功能单元可以集成在一个物理设备中(例如，处理器中)，或者每个功能单元可以是单独的物理设备，或者可以将两个或两个以上单元集成在一个单元中实现中，上述集成的单元可以采用硬件的形式实现，或者采用软件功能模块的形式实现等。
如图14所示，通信装置1400包括处理电路1410和接口电路1420。处理电路1410和接口电路1420之间相互耦合。可以理解的是，处理电路1410可以为处理器，接口电路1420可以为收发器或输入输出接口。
可选地，通信装置1400还可以包括存储器1430，用于存储处理电路1410执行的指令或存储处理电路1410运行指令所需要的输入数据或存储处理电路1410运行指令后产生的数据。
可选地，本申请实施例中的存储器(例如1430)可以集成在处理电路(例如1410)中，或者存储器(例如1430)与处理电路(例如1410)可以单独设置。
当通信装置1400用于实现图4所示的方法时，处理电路1410用于实现上述处理单元1310的功能，接口电路1420用于实现上述收发单元1320的功能。
当上述通信装置为应用于终端的芯片时，该芯片实现上述方法实施例中终端的功能。该芯片通过终端中的其它模块(如射频模块或天线)接收接入网设备发送给终端的信息；或者，该芯片向终端中的其它模块(如射频模块或天线)发送信息，该信息是终端发送给接入网设备的。
当上述通信装置为应用于接入网设备的模块时，该模块实现上述方法实施例中接入网设备的功能。该模块从接入网设备中的其它模块(如射频模块或天线)接收信息，该信息是终端发送给接入网设备的；或者，该模块向接入网设备中的其它模块(如射频模块或天线)发送信息，该信息是接入网设备发送给终端的。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其它通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请实施例中的存储器可以是随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。
本申请的实施例中的方法步骤可以在硬件中实现，也可以在可由处理器执行的软件指令中实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器、闪存、只读存储器、可编程只读存储器、可擦除可编程只读存储器、电可擦除可编程只读存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。
本申请实施例还提供一种通信装置，该通信装置包括处理器和存储器，处理器用于实现图4中第一装置额和/或第二装置的功能。例如，处理器，用于执行存储器中存储的计算机程序或指令，所述存储器，用于存储所述计算机程序或所述指令，当所述计算机程序或所述指令运行时，以使得图4中第一装置和/或第二装置的方法被执行。可选地处理器和存储器耦合，
本申请实施例还提供一种通信装置，包括处理器，处理器用于实现图4中第一装置和/或第二装置的功能。
本申请实施例还提供一种计算机可读存储介质，计算机可读存储介质存储有指令，指令还可称为计算机程序、计算机程序代码等。所述指令在计算机上运行，使得上述方法实施例中图4中第一装置和/或第二装置的功能被实现。
本申请实施例还提供一种计算机程序产品，包括计算机程序或指令，所述计算机程序产品包括用于执行图4中第一装置的方法的计算机程序或指令，或者，所述计算机程序产品包括用于执行图4中第二装置的方法的计算机程序或指令。
本申请实施例还提供一种芯片，该芯片包括处理器，处理器与存储器耦合，处理器用于执行存储器中存储的计算机程序或指令，使得图4中第一装置和/或第二装置的功能被实现。
本申请实施例还提供一种通信系统，包括第一通信装置和第二通信装置。第一通信装置用于实现图4中第一装置的功能，第二通信装置用于实现图4中第二装置的功能。
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。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘；还可以是半导体介质，例如，固态硬盘。该计算机可读存储介质可以是易失性或非易失性存储介质，或可包括易失性和非易失性两种类型的存储介质。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系。“包括A，B和C中的至少一个”可以表示：包括A；包括B；包括C；包括A和B；包括A和C；包括B和C；包括A、B和C。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。

Claims (35)

  1. 一种数据传输方法，其特征在于，所述方法用于第一装置，包括：
    获取第一映射关系以及第一待压缩数据；
    基于所述第一映射关系对所述第一待压缩数据进行压缩以获得第一压缩码流；
    向第二装置输出第一信息，所述第一信息包含所述第一压缩码流；
    获取第二待压缩数据以及第二映射关系；
    基于所述第二映射关系对所述第二待压缩数据进行压缩以获得第二压缩码流；
    向所述第二装置输出第二信息，所述第二信息包含所述第二压缩码流；
    其中所述第一待压缩数据和所述第二待压缩数据包括多径数据和/或非多径数据；所述第一映射关系指示所述第一待压缩数据的第一优先级部分；所述第二映射关系指示所述第二待压缩数据的第一优先级部分；
    其中，所述第一待压缩数据的第一优先级部分对应所述第一待压缩数据的第一压缩精度，所述第二待压缩数据的第一优先级部分对应所述第二待压缩数据的第一压缩精度。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    向第三装置输出第一信息，所述第一信息包含所述第一压缩码流；
    获取第三待压缩数据以及第三映射关系；所述第三待压缩数据包括多径数据和/或非多径数据；
    基于所述第三映射关系对所述第三待压缩数据进行压缩以获得第三压缩码流；
    向所述第三装置输出第三信息，所述第三信息包含所述第三压缩码流；
    所述第三映射关系指示所述第三待压缩数据的第一优先级部分；
    其中，所述第三待压缩数据的第一优先级部分对应所述第三待压缩数据的第一压缩精度。
  3. 如权利要求1-2任一项所述的方法，其特征在于，所述第一映射关系还指示所述第一待压缩数据的第二优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第二优先级部分；和/或，所述第三映射关系还指示所述第三待压缩数据的第二优先级部分；
    其中，所述第一待压缩数据的第二优先级部分对应所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第二优先级部分对应所述第二待压缩数据的第二压缩精度；所述第三待压缩数据的第二优先级部分对应所述第三待压缩数据的第二压缩精度；
    所述第一待压缩数据的第一压缩精度高于所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第一压缩精度高于所述第二待压缩数据的第二压缩精度；所述第三待压缩数据的第一压缩精度高于所述第三待压缩数据的第二压缩精度。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述第二映射关系、所述第三映射关系以及所述第一映射关系相同，或不同。
  5. 如权利要求1-4任一项所述的方法，其特征在于，获取所述第二映射关系和/或所述第三映射关系具体包括：
    获取来自所述第二装置的反馈信息，基于该反馈信息获得所述第二映射关系；和/或，
    获取来自所述第三装置的反馈信息，基于该反馈信息获得所述第三映射关系。
  6. 如权利要求5所述的方法，其特征在于，从所述第二装置获取的反馈信息包括：所述第二待压缩数据对应的映射关系；和/或，区域指示信息；
    从所述第三装置获取的反馈信息包括：所述第三待压缩数据对应的映射关系；和/或，区域指示信息。
  7. 如权利要求6所述的方法，其特征在于，从所述第二装置获取的反馈信息中的区域指示信息包括一下任意一项或多项：
    所述第二待压缩数据中的地理信息、坐标信息、pattern指示、Index信息；
    从所述第三装置获得的反馈信息中的区域指示信息包括一下任意一项或多项：
    所述第三待压缩数据中的地理信息、坐标信息、pattern指示、Index信息。
  8. 如权利要求5-7任一项所述的方法，其特征在于，所述获取第二待压缩数据包括：根据所述第二装置的反馈信息获取第二待压缩数据；所述获取第三待压缩数据包括：根据所述第三装置的反馈信息获取第三待压缩数据。
  9. 如权利要求1-8任一项所述的方法，其特征在于，所述第一待压缩数据、所述第二待压缩数据以及所述第三待压缩数据是同时获取的，或不同时获取的。
  10. 如权利要求3-9任一项所述的方法，其特征在于，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输。
  11. 如权利要求10所述的方法，其特征在于，所述待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：
    先传输高优先级部分对应的压缩码流，后续传输次优先级部分对应的压缩码流；或，先传输次优先级部分对应的压缩码流，后续传输高优先级部分对应的压缩码流。
  12. 如权利要求10所述的方法，其特征在于，所述待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：
    所述第一信息还包含第一优先级标识，所述第一优先级标识用于指示所述第一压缩码流的传输优先级；和或，
    所述第二信息还包含第二优先级标识，所述第二优先级标识用于指示所述第二压缩码流的传输优先级；和或，
    所述第三信息还包含第三优先级标识，所述第三优先级标识用于指示所述第三压缩码流的传输优先级。
  13. 如权利要求10所述的方法，其特征在于，所述方法还包括：具备不同优先级标识的压缩码流合并输出；其中，优先级标识合并指示，或分开指示。
  14. 如权利要求10-13任一项所述的方法，其特征在于，压缩码流以单次输出，并包含不同优先级标识的压缩码流；或，压缩码流分多次输出，并每次包含不同优先级标识的压缩码流。
  15. 如权利要求1-14任一项所述的方法，其特征在于，所述方法还包括：
    所述第一信息包含所述第一映射关系；和/或，
    所述第二信息包含所述第二映射关系；和/或，
    所述第三信息包含所述第三映射关系。
  16. 如权利要求1-15任一项所述的方法，其特征在于，所述第一映射关系还指示所述第一待压缩数据的第三优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第三优先级部分；和/或，所述第三映射关系还指示所述第三待压缩数据的第三优先级部分；
    其中，所述第一待压缩数据的第三优先级部分对应所述第一待压缩数据的第三压缩精度；所述第二待压缩数据的第三优先级部分对应所述第二待压缩数据的第三压缩精度；所述第三待压缩数据的第三优先级部分对应所述第三待压缩数据的第三压缩精度。
  17. 如权利要求1-16任一项所述的方法，其特征在于，所述方法还包括：
    在第二压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定；
    在第三压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定。
  18. 如权利要求1-17任一项所述的方法，其特征在于，所述方法还包括：通过以下任意一种或多种形式输出信息：单播、组播、广播。
  19. 一种数据传输方法，其特征在于，所述方法用于第二装置，包括：
    获取第一信息，所述第一信息包含第一压缩码流；所述第一压缩码流由第一装置基于第一映射关系对第一待压缩数据进行压缩获得；
    获取第二信息，所述第二信息包含第二压缩码流；所述第二压缩码流由第一装置基于第二映射关系对第二待压缩数据进行压缩获得；
    其中，所述第一待压缩数据和所述第二待压缩数据包括多径数据和/或非多径数据；所述第一映射关系指示所述第一待压缩数据的第一优先级部分；所述第二映射关系指示所述第二待压缩数据的第一优先级部分；
    其中，所述第一待压缩数据的第一优先级部分对应所述第一待压缩数据的第一压缩精度，所述第二待压缩数据的第一优先级部分对应所述第二待压缩数据的第一压缩精度；
    基于相应映射关系对相应压缩码流进行解压。
  20. 如权利要求19所述的方法，其特征在于，所述第一映射关系还指示所述第一待压缩数据的第二优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第二优先级部分；
    其中，所述第一待压缩数据的第二优先级部分对应所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第二优先级部分对应所述第二待压缩数据的第二压缩精度；
    所述第一待压缩数据的第一压缩精度高于所述第一待压缩数据的第二压缩精度；所述第二待压缩数据的第一压缩精度高于所述第二待压缩数据的第二压缩精度。
  21. 如权利要求19-20任一项所述的方法，其特征在于，所述第二映射关系与所述第一映射关系相同，或不同。
  22. 如权利要求19-21任一项所述的方法，其特征在于，所述方法还包括：向所述第一装置输出反馈信息，以使得所述第一装置基于所述反馈信息获得所述第二映射关系。
  23. 如权利要求22所述的方法，其特征在于，所述反馈信息具体包括：
    所述第二待压缩数据对应的映射关系；和/或，区域指示信息。
  24. 如权利要求23所述的方法，其特征在于，所述区域指示信息包括以下任意一项或多项：
    所述第二待压缩数据中的地理信息、坐标信息、pattern指示、Index信息。
  25. 如权利要求19-24任一项所述的方法，其特征在于，所述第一待压缩数据和所述第二待压缩数据是所述第一装置同时获取的，或不同时获取的。
  26. 如权利要求20-25任一项所述的方法，其特征在于，待压缩数据的不同优先级部分对应的压缩码流在不同时序传输。
  27. 如权利要求26所述的方法，其特征在于，所述待压缩数据的不同优先级部分对应的压缩码流在不同时序传输具体包括：
    所述第一信息还包含第一优先级标识，所述第一优先级标识用于指示所述第一压缩码流的传输优先级；和/或，
    所述第二信息还包含第二优先级标识，所述第二优先级标识用于指示所述第二压缩码流的传输优先级。
  28. 如权利要求26所述的方法，其特征在于，所述方法还包括：具备不同优先级标识的压缩码流合并输出；其中，优先级标识合并指示，或分开指示。
  29. 如权利要求26-28任一项所述的方法，其特征在于，压缩码流以单次输出，并包含不同优先级标识的压缩码流；或，压缩码流分多次输出，并每次包含不同优先级标识的压缩码流。
  30. 如权利要求19-29任一项所述的方法，其特征在于，所述方法还包括：
    所述第一信息包含所述第一映射关系；和/或，
    所述第二信息包含所述第二映射关系。
  31. 如权利要求19-30任一项所述的方法，其特征在于，所述第一映射关系还指示所述第一待压缩数据的第三优先级部分；和/或，所述第二映射关系还指示所述第二待压缩数据的第三优先级部分；
    其中，所述第一待压缩数据的第三优先级部分对应所述第一待压缩数据的第三压缩精度；所述第二待压缩数据的第三优先级部分对应所述第二待压缩数据的第三压缩精度。
  32. 如权利要求19-31任一项所述的方法，其特征在于，所述方法还包括：在第二压缩码流第一次传输时指定时频资源；或，根据上层信令或DCI进行指定。
  33. 一种通信装置，其特征在于，包括：
    处理器，用于执行存储器中存储的计算机程序或指令；
    所述存储器，用于存储所述计算机程序或所述指令；
    当所述计算机程序或所述指令被处理器运行时，执行如权利要求1-18中任一项所述的方法；或，执行如权利要求19-32中任一项所述的方法。
  34. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，所述指令在计算机上运行，使得计算机执行如权利要求1-18中任一项所述的方法；或，执行如权利要求19-32中任一项所述的方法。
  35. 一种计算机程序产品，其特征在于，所述计算机程序产品包括用于执行如权利要求1-18中任一项所述的方法的计算机程序或指令；或，包括用于执行如权利要求19-32中任一项所述的方法的计算机程序或指令。
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US20210184744A1 (en) * 2019-12-13 2021-06-17 QUALCOMM lncornorated User equipment feedback of multi-path channel cluster information to assist network beam management
WO2023014819A1 (en) * 2021-08-06 2023-02-09 Intel Corporation Enhanced multiplexing of uplink control information with different physical layer priorities
WO2023020384A1 (zh) * 2021-08-16 2023-02-23 维沃移动通信有限公司 信息处理方法、装置及终端
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