WO2023184217A1 - 码字的层映射指示方法、装置、设备及存储介质 - Google Patents

码字的层映射指示方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023184217A1
WO2023184217A1 PCT/CN2022/084006 CN2022084006W WO2023184217A1 WO 2023184217 A1 WO2023184217 A1 WO 2023184217A1 CN 2022084006 W CN2022084006 W CN 2022084006W WO 2023184217 A1 WO2023184217 A1 WO 2023184217A1
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Prior art keywords
layer mapping
layer
mapping scheme
type
transmission
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PCT/CN2022/084006
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English (en)
French (fr)
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高雪媛
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北京小米移动软件有限公司
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Priority to CN202280001061.2A priority Critical patent/CN117280642A/zh
Priority to PCT/CN2022/084006 priority patent/WO2023184217A1/zh
Publication of WO2023184217A1 publication Critical patent/WO2023184217A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of communication technology, and in particular to a codeword layer mapping indication method, device, equipment and storage medium.
  • Multi-input Multi-output is a wireless communication system that uses multiple transmit antennas and multiple receive antennas for data transmission.
  • the codewords need to be mapped to different data layers according to certain rules. For example, in a scenario where the terminal has four transmitting antennas, map the first codeword of the two codewords to transmission layer 1 and transmission layer 2, and map the second codeword of the two codewords to transmission layer 3 and transmission layer 2.
  • Transport layer 4 In a scenario where the terminal has four transmitting antennas, map the first codeword of the two codewords to transmission layer 1 and transmission layer 2, and map the second codeword of the two codewords to transmission layer 3 and transmission layer 2.
  • the flexibility of the above mapping method is limited. In some scenarios, the data transmission quality is poor. For example, when the inter-layer channel performance of each transmission layer is greatly different, the above mapping method will cause performance loss.
  • Embodiments of the present application provide a codeword layer mapping indication method, device, equipment and storage medium.
  • the terminal determines and enables a type one layer mapping scheme or a type two layer mapping scheme.
  • a codeword layer mapping indication method includes:
  • the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme
  • the maximum value of the difference in the number of layers after layer mapping the two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • a codeword layer mapping indication method includes:
  • Send instruction information the instruction information being used to instruct the terminal to determine and enable a target layer mapping scheme, where the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme;
  • the maximum value of the difference in the number of layers after layer mapping the two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • a codeword layer mapping indicating device includes:
  • a determination module configured to determine and enable a target layer mapping scheme, where the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme;
  • the maximum value of the difference in the number of layers after layer mapping the two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • a codeword layer mapping indicating device includes:
  • a sending module configured to send indication information, the indication information being used to instruct the terminal to determine and enable a target layer mapping scheme, where the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme;
  • the maximum value of the difference in the number of layers after layer mapping the two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • a terminal device includes a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor.
  • the processor The executable instructions are configured to load and execute the codeword layer mapping indication method as described above.
  • a network device includes: a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor.
  • the processing The processor is configured to load and execute the executable instructions to implement the codeword layer mapping indication method as described above.
  • a computer-readable storage medium in which executable instructions are stored, and the executable instructions are loaded and executed by the processor to implement the code as described above.
  • Word layer mapping indication method In accordance with one aspect of the present application, a computer-readable storage medium is provided, in which executable instructions are stored, and the executable instructions are loaded and executed by the processor to implement the code as described above. Word layer mapping indication method.
  • a computer program product is provided, executable instructions are stored in the computer program product, and the executable instructions are loaded and executed by the processor to implement the layer of codewords as described above. Mapping instructions method.
  • the terminal determines and enables a type 1 layer mapping scheme or a type 2 layer mapping scheme.
  • the type 2 layer mapping scheme provided by this application can flexibly configure the number of layers for each codeword after mapping. For example, when the terminal has 8 transmitting antennas, the first codeword is mapped to 2 transmission layers, and the second codeword is mapped to 2 transmission layers. The codewords are mapped to 6 transmission layers, which ensures the quality of data transmission between the terminal and the network equipment even when the channel performance between layers is greatly different.
  • Figure 1 is a schematic diagram of a communication system provided by an exemplary embodiment of the present application.
  • Figure 2 is a flow chart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application
  • Figure 3 is a schematic diagram of a type 1 layer mapping method provided by an exemplary embodiment of the present application.
  • Figure 4 is a schematic diagram of a type 2 layer mapping method provided by an exemplary embodiment of the present application.
  • Figure 5 is a schematic diagram of a type 2 layer mapping method provided by an exemplary embodiment of the present application.
  • Figure 6 is a schematic diagram of a type 2 layer mapping method provided by an exemplary embodiment of the present application.
  • Figure 7 is a schematic diagram of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 8 is a schematic diagram of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 9 is a schematic diagram of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 10 is a flow chart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 11 is a flow chart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 12 is a flow chart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 13 is a flow chart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 14 is a flow chart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application.
  • Figure 15 is a schematic structural diagram of a codeword layer mapping indication device provided by an exemplary embodiment of the present application.
  • Figure 16 is a schematic structural diagram of a codeword layer mapping indication device provided by an exemplary embodiment of the present application.
  • Figure 17 is a block diagram of a communication device illustrating an exemplary embodiment of the present application.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • word “if” as used herein may be interpreted as "when” or "when” or "in response to determining.”
  • this article uses the terms “greater than” or “less than” when characterizing the size relationship. However, those skilled in the art can understand that the term “greater than” also encompasses the meaning of “greater than or equal to”, and “less than” also encompasses the meaning of “less than or equal to”.
  • FIG. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application.
  • the communication system may include: a network device 12 and a terminal 14.
  • the network device 12 may be a base station, which is a device deployed in an access network to provide wireless communication functions for terminals.
  • Base stations can include various forms of macro base stations, micro base stations, relay stations, access points, etc.
  • the names of equipment with base station functions may be different.
  • eNodeB or eNB in the LTE system, it is called eNodeB or eNB; in the 5G NR-U system, it is called gNodeB or gNB.
  • the description "base station” may change.
  • the above-mentioned devices that provide wireless communication functions for the terminal 14 are collectively referred to as network equipment.
  • the communication interface between network devices 12 is an Xn interface.
  • the terminal 14 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS), Terminal (terminal device) and so on.
  • the network device 12 and the terminal 14 communicate with each other through some air interface technology, such as the Uu interface.
  • the terminal 14 supports performing a small data transmission process in an inactive state.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA broadband code division multiple access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • FIG. 2 shows a flowchart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application. .
  • the method includes:
  • Step 202 Determine and enable a target layer mapping scheme, where the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme.
  • the target layer mapping scheme is determined and enabled or activated or supported, that is, in the uplink, the terminal determines and enables the layer mapping scheme of type one or the layer of type two.
  • Mapping scheme In the downlink, the network device determines and enables a type 1 layer mapping scheme or a type 2 layer mapping scheme. The embodiment of this application takes the uplink as an example for explanation.
  • Type 1 layer mapping scheme refers to a scheme that maps codewords to single or multiple transport layers.
  • Type 2 layer mapping scheme refers to another scheme that maps codewords to single or multiple transport layers.
  • the layer mapping scheme of type 1 and the layer mapping scheme of type 2 represent different layer mapping schemes, and the embodiment of the present application does not specifically limit the naming of the layer mapping scheme.
  • Codeword refers to data derived from the same information bit block and subjected to channel coding.
  • Layer mapping refers to the mechanism for assigning codewords to designated transport layers, and may also be called “codeword-to-layer mapping” or “codeword-layer mapping”.
  • layer mapping can be a "codeword to layer mapping” process in which the terminal determines the uplink, or it can be a “codeword to layer mapping” process in which the network device determines the downlink. This is not the case in the embodiments of this application. limited.
  • the maximum value of the difference in the number of layers after layer mapping two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • the first codeword corresponds to the first layer number after layer mapping
  • the second codeword corresponds to the second layer number after layer mapping
  • the layer number difference between the first layer number and the second layer number is zero or one.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • two codewords correspond to up to 8 transmission layers.
  • 8 transmission layers are used as an example for explanation.
  • the terminal determines and enables the layer mapping scheme of type 1
  • the first One codeword is mapped to layers 1 to 4
  • the second codeword is mapped to layers 5 to 8. That is, the first codeword is allocated to layers 1 to 4, and the second codeword is allocated to layers 5 to 8.
  • Two codes Each word is mapped to 4 transmission layers, and the layer number difference between two codewords is zero.
  • the first codeword is mapped to layers 1 to 2
  • the second codeword is mapped to layers 3 to 8, that is, the first codeword is allocated to layers 1 to 2.
  • layer the second codeword is allocated to layers 3 to 8
  • the first codeword is mapped to 2 transmission layers
  • the second codeword is mapped to 6 transmission layers
  • the difference in the number of layers between the two codewords is four.
  • the technical solution provided by the embodiments of the present application determines and enables a type 1 layer mapping solution or a type 2 layer mapping solution.
  • the type 2 layer mapping scheme provided by this application can flexibly configure the number of layers for each codeword after mapping, so that data transmission between the terminal and the network device can be guaranteed even when the channel performance between layers is greatly different. quality.
  • the type 1 layer mapping scheme and type 2 layer mapping scheme can be used for both uplink and downlink.
  • the type 1 layer mapping scheme includes 8 layer mapping schemes corresponding to 1 codeword and 2 codewords.
  • the number of transmission layers corresponding to one codeword after layer mapping is greater than 0 and less than or equal to 4. If the two codewords include the first codeword and the second codeword; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping; in type 1 layer mapping Under the solution, the difference in layer number between the first layer number and the second layer number is 0 or 1, and the sum of the first layer number and the second layer number is greater than 4 and less than or equal to 8.
  • the type 1 layer mapping scheme corresponding to one codeword includes the following four types:
  • ⁇ CW0 is mapped to 1 transport layer
  • CW0 is mapped to transport layer 1, and the total number of transport layers is 1.
  • ⁇ CW0 is mapped to 2 transport layers
  • CW0 is mapped to transport layers 1 and 2, and the total number of transport layers is 2.
  • ⁇ CW0 is mapped to 3 transport layers
  • CW0 is mapped to transport layers 1 to 3, and the total number of transport layers is 3.
  • ⁇ CW0 is mapped to 4 transport layers
  • CW0 is mapped to transport layers 1 to 4, and the total number of transport layers is 4;
  • the type 1 layer mapping scheme corresponding to 2 codewords includes the following 4 types:
  • ⁇ CW0 is mapped to 2 transport layers, and CW1 is mapped to 3 transport layers;
  • CW0 is mapped to transport layers 1 and 2
  • CW1 is mapped to transport layers 3 to 5
  • the total number of transport layers is 5.
  • ⁇ CW0 is mapped to 3 transport layers
  • CW1 is mapped to 3 transport layers
  • CW0 is mapped to transport layers 1 to 3
  • CW1 is mapped to transport layers 4 to 6
  • the total number of transport layers is 5.
  • ⁇ CW0 is mapped to 3 transport layers, CW1 is mapped to 4 transport layers;
  • CW0 is mapped to transport layers 1 to 3
  • CW1 is mapped to transport layers 4 to 7
  • the total number of transport layers is 5.
  • ⁇ CW0 is mapped to 4 transport layers
  • CW1 is mapped to 4 transport layers.
  • CW0 is mapped to transport layers 1 to 4
  • CW1 is mapped to transport layers 5 to 8
  • the total number of transport layers is 8.
  • the type 2 layer mapping scheme includes 16 layer mapping schemes corresponding to 1 codeword and 2 codewords. Under the type 2 layer mapping scheme, the number of transmission layers corresponding to one codeword after layer mapping is greater than 0 and less than or equal to 4.
  • the type 2 layer mapping scheme corresponding to one codeword includes the following four types:
  • ⁇ CW0 is mapped to 1 transport layer
  • CW0 is mapped to transport layer 1, and the total number of transport layers is 1.
  • ⁇ CW0 is mapped to 2 transport layers
  • CW0 is mapped to transport layers 1 and 2, and the total number of transport layers is 2.
  • ⁇ CW0 is mapped to 3 transport layers
  • CW0 is mapped to transport layers 1 to 3, and the total number of transport layers is 3.
  • ⁇ CW0 is mapped to 4 transport layers
  • CW0 is mapped to transport layers 1 to 4, and the total number of transport layers is 4.
  • the two codewords include the first codeword and the second codeword; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping; in the type 2 layer mapping scheme , the maximum layer number difference between the first layer number and the second layer number is allowed to be greater than 1, and the sum of the first layer number and the second layer number is greater than 1 and less than or equal to 8.
  • the layer mapping scheme of type one it can be seen from the above description of the layer mapping scheme of type one that the difference between the first layer number and the second layer number in the layer mapping scheme of type one is zero or one, and the difference between the first layer number and the second layer number of the layer mapping scheme of type two is The maximum layer number difference between the second layer numbers is allowed to be greater than 1. It can be seen that the layer mapping scheme of type two is more flexible than the layer mapping scheme of type one. Taking the maximum number of total transmission layers as 8 as an example, the layer number difference between the first layer number and the second layer number in the type 2 layer mapping scheme can be any integer from zero to six. For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 7, the total number of transport layers is 8, and the difference in layer number between the first layer number and the second layer number is six.
  • the type 2 layer mapping scheme includes at least one of the following schemes:
  • the layer mapping scheme for type 2 supports the scheme of transmitting two codewords for the transmission of layers 5 to 8.
  • the type 2 layer mapping scheme corresponding to the two codewords includes the following 12 kind:
  • ⁇ CW0 is mapped to 1 transport layer, CW1 is mapped to 4 transport layers;
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layers 2 to 5
  • the total number of transport layers is 5.
  • ⁇ CW0 is mapped to 2 transport layers, and CW1 is mapped to 3 transport layers;
  • CW0 is mapped to transport layers 1 and 2
  • CW1 is mapped to transport layers 3 to 5
  • the total number of transport layers is 5.
  • ⁇ CW0 is mapped to 1 transport layer
  • CW1 is mapped to 5 transport layers
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layers 2 to 6, and the total number of transport layers is 6.
  • ⁇ CW0 is mapped to 2 transport layers, and CW1 is mapped to 4 transport layers;
  • CW0 is mapped to transport layers 1 and 2
  • CW1 is mapped to transport layers 3 to 6, and the total number of transport layers is 6.
  • ⁇ CW0 is mapped to 3 transport layers
  • CW1 is mapped to 3 transport layers
  • CW0 is mapped to transport layers 1 to 3
  • CW1 is mapped to transport layers 4 to 6
  • the total number of transport layers is 6.
  • ⁇ CW0 is mapped to 1 transport layer, and CW1 is mapped to 6 transport layers;
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layers 2 to 7, and the total number of transport layers is 7.
  • ⁇ CW0 is mapped to 2 transport layers, and CW1 is mapped to 5 transport layers;
  • CW0 is mapped to transport layers 1 and 2
  • CW1 is mapped to transport layers 3 to 7, and the total number of transport layers is 7.
  • ⁇ CW0 is mapped to 3 transport layers, CW1 is mapped to 4 transport layers;
  • CW0 is mapped to transport layers 1 to 3
  • CW1 is mapped to transport layers 4 to 7
  • the total number of transport layers is 7.
  • ⁇ CW0 is mapped to 1 transport layer and CW1 is mapped to 7 transport layers;
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layers 2 to 8
  • the total number of transport layers is 8.
  • ⁇ CW0 is mapped to 2 transport layers, and CW1 is mapped to 6 transport layers;
  • CW0 is mapped to transport layers 1 and 2
  • CW1 is mapped to transport layers 3 to 8
  • the total number of transport layers is 8.
  • ⁇ CW0 is mapped to 3 transport layers, and CW1 is mapped to 5 transport layers;
  • CW0 is mapped to transport layers 1 to 3
  • CW1 is mapped to transport layers 4 to 8
  • the total number of transport layers is 8.
  • ⁇ CW0 is mapped to 4 transport layers
  • CW1 is mapped to 4 transport layers.
  • CW0 is mapped to transport layers 1 to 4
  • CW1 is mapped to transport layers 5 to 8
  • the total number of transport layers is 8.
  • the layer mapping scheme for type 2 supports the scheme of transmitting two codewords for the transmission of 4 or more layers (including 4 layers).
  • the type 2 layer mapping scheme supports the transmission of two codewords for transmission of 4 or more layers (including 4 layers), the type 2 layer mapping corresponding to the 2 codewords (including CW0 and CW1) Based on Figure 4, the scheme also includes the following two types:
  • ⁇ CW0 is mapped to 1 transport layer, CW1 is mapped to 3 transport layers;
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layers 2 to 4
  • the total number of transport layers is 4.
  • ⁇ CW0 is mapped to 2 transport layers
  • CW1 is mapped to 2 transport layers
  • CW0 is mapped to transport layers 1 and 2
  • CW1 is mapped to transport layers 3 and 4
  • the total number of transport layers is 4.
  • the scheme of transmitting two codewords is supported for transmission above layer 2.
  • the Type 2 layer mapping scheme when the Type 2 layer mapping scheme supports the transmission of two codewords for transmission of more than 2 layers, the Type 2 layer mapping scheme corresponding to the two codewords (including CW0 and CW1) is in Figure 4 Basically, it also includes the following 4 types:
  • ⁇ CW0 is mapped to 1 transport layer
  • CW1 is mapped to 1 transport layer
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layer 2
  • the total number of transport layers is 2.
  • ⁇ CW0 is mapped to 1 transport layer
  • CW1 is mapped to 2 transport layers
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layers 2 to 3
  • the total number of transport layers is 3.
  • ⁇ CW0 is mapped to 1 transport layer, CW1 is mapped to 3 transport layers;
  • CW0 is mapped to transport layer 1
  • CW1 is mapped to transport layers 2 to 4
  • the total number of transport layers is 4.
  • ⁇ CW0 is mapped to 2 transport layers
  • CW1 is mapped to 2 transport layers
  • CW0 is mapped to transport layers 1 and 2
  • CW1 is mapped to transport layers 3 and 4
  • the total number of transport layers is 4.
  • the layer number difference between the first layer number and the second layer number is zero or one.
  • the terminal enables a type 1 layer mapping scheme.
  • the layer number difference after layer mapping of two codewords is zero or one.
  • the two codewords include the first codeword and the third codeword. Two codewords; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping.
  • the first codeword 901 and the second codeword 902 correspond to a total of 8 transmission layers.
  • the terminal determines and enables the layer mapping scheme of type 1
  • the first codeword 901 and the second codeword 902 correspond to a total of 8 transmission layers.
  • the first codeword 901 and the second codeword 902 perform codeword-layer mapping 503, and the first codeword 901 is mapped to layers 1 to 4, and the second codeword 902 is mapped to layers 5 to 8, that is, the first codeword 901
  • the corresponding number of the first layer is 4, the number of the second layer corresponding to the second codeword 902 is 4, and the difference in layer number between the first layer and the second layer is zero.
  • the corresponding number of each layer is The data is mapped to different antenna ports through layer-port mapping 704, that is, the data of layers 1 to 4 corresponding to the first codeword 901 is mapped to the demodulation reference signal port one 705 through precoding, and the second code is mapped through precoding.
  • the data of layers 5 to 8 corresponding to word 902 is mapped to demodulation reference signal port two 706.
  • the first codeword 901 is mapped to layers 1 to 4, and the second codeword 902 is mapped to layers 5 to 8, which only means that the first codeword 901 is mapped to layers 4.
  • the first codeword 901 can be Mapping to layers 1, 3, 5, and 7, the order of the four layers is not specifically limited in the embodiment of this application.
  • the first codeword 801 and the second codeword 802 correspond to a total of 7 transmission layers.
  • the terminal determines and enables the layer mapping scheme of type 1
  • the first codeword 801 and the second codeword 802 correspond to a total of 7 transmission layers.
  • the first codeword 801 and the second codeword 802 perform codeword-layer mapping 803, and the first codeword 801 is mapped to layers 1 to 3, and the second codeword 802 is mapped to layers 4 to 7, that is, the first codeword 801
  • the corresponding number of the first layer is 3, the number of the second layer corresponding to the second codeword 802 is 4, and the difference in layer number between the first layer and the second layer is one.
  • the corresponding number of each layer is The data is mapped to different antenna ports through layer-port mapping 804, that is, the data of layers 1 to 3 corresponding to the first codeword 801 is mapped to the demodulation reference signal port one 805 through precoding, and the second code is mapped through precoding.
  • the data of layers 4 to 7 corresponding to word 802 is mapped to demodulation reference signal port two 806.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from two to six.
  • the terminal enables a type 2 layer mapping scheme.
  • the maximum value of the difference in the number of layers after layer mapping two codewords is any value from zero to six.
  • the two codewords include a first codeword and a second codeword; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • the layer number difference between the first layer number and the second layer number may be any integer from zero to six, which is not limited in this embodiment of the present application.
  • the type 2 layer mapping scheme includes at least one of the following schemes:
  • the transmission of layer 4 or above supports the transmission of two codewords
  • the first codeword 901 and the second codeword 902 correspond to a total of 8 transmission layers.
  • the terminal determines and enables the type 2 layer mapping scheme
  • the first codeword 901 and the second codeword 902 correspond to a total of 8 transmission layers.
  • the first codeword 901 and the second codeword 902 perform codeword-layer mapping 903, and the first codeword 901 is mapped to layers 1 to 6, and the second codeword 902 is mapped to layers 7 to 8, that is, the first codeword 901
  • the corresponding number of the first layer is 6, the number of the second layer corresponding to the second codeword 902 is 2, and the difference in layer number between the first layer and the second layer is 4.
  • the corresponding number of each layer is The data is mapped to different antenna ports through layer-to-port mapping 904, that is, the data of layers 1 to 6 corresponding to the first codeword 901 is mapped to the demodulation reference signal port 905 through precoding, and the second code is mapped to the demodulation reference signal port 905 through precoding.
  • the data of layers 7 to 8 corresponding to word 902 is mapped to demodulation reference signal port two 906.
  • the layer number difference between the first layer number and the second layer number can be any integer from zero to six, it can be obtained At least one of the following situations:
  • Case 1 The first codeword 901 is mapped to layer 1, and the second codeword 902 is mapped to layers 2 to 8;
  • Case 2 The first codeword 901 is mapped to layers 1 to 2, and the second codeword 902 is mapped to layers 3 to 8;
  • Case 3 The first codeword 901 is mapped to layers 1 to 3, and the second codeword 902 is mapped to layers 4 to 8;
  • Case 4 The first codeword 901 is mapped to layers 1 to 4, and the second codeword 902 is mapped to layers 5 to 8;
  • Case 5 The first codeword 901 is mapped to layers 1 to 5, and the second codeword 902 is mapped to layers 6 to 8;
  • Case 6 The first codeword 901 is mapped to layers 1 to 6, and the second codeword 902 is mapped to layers 7 to 8;
  • Case 7 The first codeword 901 is mapped to layers 1 to 7, and the second codeword 902 is mapped to layer 8.
  • the codeword-layer mapping process of the first codeword 901 and the second codeword 902 can be referred to the above embodiment, and will not be described again here.
  • the terminal determines and enables the target layer mapping scheme through default rules.
  • Figure 10 shows a flowchart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application. In this embodiment, this method is applied to the terminal. The method includes:
  • Step 1002 Determine and enable the target layer mapping scheme.
  • the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme.
  • the embodiments of this application are described using an uplink as an example.
  • the terminal determines and enables or activates or supports the target layer mapping scheme, that is, the terminal determines and enables a type 1 layer mapping scheme or Type 2 layer mapping scheme.
  • the terminal determines and enables the target layer mapping scheme, including at least one of the following situations:
  • the terminal enables type 1 layer mapping scheme by default
  • the terminal enables the type 2 layer mapping scheme by default
  • MTRP ⁇ For MultiTransmission and Reception Point
  • the single transmission reception point STRP can also be called “single TRP”
  • the multiple transmission reception points MTRP can also be called “multiple TRP”, which is not limited in this application.
  • the terminal For example, for a terminal that supports the type 2 layer mapping scheme, the terminal enables the type 2 layer mapping scheme by default.
  • the technical solution provided by the embodiments of the present application shows various situations in which the terminal determines and enables the type one layer mapping scheme or the type two layer mapping scheme through default rules.
  • the type 2 layer mapping scheme provided by this application can flexibly configure the number of layers for each codeword after mapping, so that data transmission between the terminal and the network device can be guaranteed even when the channel performance between layers is greatly different. quality.
  • the terminal determines and enables the target layer mapping scheme according to the instruction information of the network device.
  • Figure 11 shows a flowchart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application. In this embodiment, this method is applied to the terminal. The method includes:
  • Step 1102 Receive instruction information.
  • the terminal receives the instruction information sent by the network device, and the instruction information is used to instruct the terminal to determine and enable the target mapping scheme.
  • the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme.
  • the terminal determines and enables or activates or supports the target layer mapping scheme, that is, the terminal determines and enables a type one layer mapping scheme or a type two layer mapping scheme.
  • the target layer mapping scheme that is, the terminal determines and enables a type one layer mapping scheme or a type two layer mapping scheme.
  • the maximum value of the difference in the number of layers after layer mapping two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • the first codeword corresponds to the first layer number after layer mapping
  • the second codeword corresponds to the second layer number after layer mapping
  • the layer number difference between the first layer number and the second layer number is zero or one.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • the terminal receives indication information sent by the network device, and the indication information is carried in at least one of the following signaling:
  • MAC Control Element Media Access Control Element
  • DCI Downlink Control Information
  • Multicast control downlink control information (GroupControl-Downlink Control Information, GC-DCI) signaling, but is not limited to this, and the embodiment of the present application does not specifically limit this.
  • the terminal receives the indication information sent by the network device.
  • the indication information is carried in DCI signaling or GC-DCI signaling
  • the indication information is carried in the DCI signaling or GC-DCI signaling. At least one of the following information fields:
  • code points in other indication fields except the antenna port indication field are not limited to this, and the embodiment of the present application does not specifically limit this.
  • the new indication domain refers to the indication domain newly defined in DCI.
  • the code point in the antenna port indication field refers to a value of a bit sequence composed of one bit or multiple bits. For example, "001".
  • the indication information is carried in the single-TRP and multi-TRP transmission switching dynamic indication fields of DCI signaling.
  • the code point in the single-TRP and multi-TRP transmission switching dynamic indication fields is the first value, it indicates STRP. and type 1 layer mapping scheme; when the code point in the single TRP and multi-TRP transmission switching dynamic indication field is the second value, it indicates MTRP and type 2 layer mapping scheme.
  • the indication information is carried in the single TRP and multiple TRP transmission switching dynamic indication fields of DCI signaling.
  • the code points in the single TRP and multiple TRP transmission switching dynamic indication fields are "00" and "01"
  • the STRP and type are indicated.
  • a layer mapping scheme for example, when the code point in the single TRP and multi-TRP transmission switching dynamic indication field is "00", it indicates the single TRP transmission sent by TRP1; in the single TRP and multi-TRP transmission switching dynamic indication field, the code point When the code point is "01”, it indicates the single TRP transmission sent by TRP2; when the code points in the single TRP and multi-TRP transmission switching dynamic indication field are "10" and "11", it indicates the MTRP and type 2 layer mapping scheme, for example, in When the code point in the single TRP and multi-TRP transmission switching dynamic indication field is "10", it indicates the multi-TRP mode of TRP1 and TRP2 transmission.
  • the sending sequence is TRP1, TRP2; in the single TRP and multi-TRP transmission switching dynamic indication field
  • the code point is "11"
  • the sending sequence is TRP2, TRP1.
  • Step 1104 Determine and enable the target layer mapping scheme according to the indication information.
  • the terminal determines and enables the target layer mapping scheme according to the indication information, that is, the terminal determines and enables the layer mapping scheme of type one according to the indication information; or, the terminal determines and enables any one of type two according to the indication information. mapping scheme; or, the terminal determines and enables the type 2 layer mapping scheme according to the indication information.
  • the type 2 layer mapping scheme includes at least one of the following situations:
  • the transmission of layer 4 or above supports the transmission of two codewords
  • the terminal receives the instruction information sent by the network device.
  • the instruction information 00 represents type 2
  • 01 represents layers 5-8
  • 10 represents layer 4 or above
  • 11 represents layer 2 or above.
  • the terminal determines and enables the target layer mapping scheme based on the instruction information. .
  • the two codewords include a first codeword and a second codeword; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • the layer number difference between the first layer number and the second layer number can be any integer from zero to six, that is, the first layer number and the second layer number
  • the difference in the number of layers between the numbers may be zero or one, which is not limited in the embodiment of the present application.
  • the technical solution provided by the embodiments of the present application shows that the terminal determines and enables a type 1 layer mapping scheme or a type 2 layer mapping scheme according to the indication information, and introduces the carrying position of the indication information.
  • the technical solution provided by the embodiments of this application enables the terminal to select different layer mapping schemes according to the instruction information to achieve flexible scheduling, so that the data transmission quality between the terminal and the network device can be guaranteed even when the performance of the inter-layer channel is greatly different. .
  • the terminal reports capability information, and the terminal determines and enables the target layer mapping scheme based on the instruction information.
  • Figure 12 shows a flowchart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application. In this embodiment, this method is applied to the terminal. The method includes:
  • Step 1202 Report the terminal's capability information.
  • the capability information is used for the network device to generate indication information.
  • the capability information is used to indicate that the layer mapping scheme of type 2 is supported.
  • the capability information may indicate support for a layer mapping scheme that enables Type 2 transmission for the terminal, or may indicate support for a layer mapping scheme that enables Type 2 transmission for different layers of the terminal; this application does not describe the dimensionality of the capability information. any restrictive provisions.
  • the terminal reports capability information of the terminal, and the capability information of the terminal is used for the network device to generate indication information.
  • the type 2 layer mapping scheme includes at least one of the following situations:
  • the transmission of layer 4 or above supports the transmission of two codewords
  • the capability information is used to indicate that the layer mapping scheme of type 2 is supported; specifically, the capability information includes but is not limited to any of the following:
  • ⁇ Capability information is used to indicate that the layer mapping scheme of type 2 is supported for transmission of layers 5 to 8. Transmissions above layer 5 support two codewords;
  • the 6-layer transmission supports two codewords.
  • the first codeword of the two codewords corresponds to the first layer number of 4 after layer mapping.
  • the second codeword after layer mapping corresponds to the second layer number of 2
  • the difference in the number of transmission layers between the first layer number and the second layer number is 2, that is, under the type 2 layer mapping scheme, the first
  • the maximum value of the difference in transmission layer number between the layer number and the second layer number is any value from zero to six.
  • ⁇ Capability information is used to indicate that the layer mapping scheme of type 2 is supported for transmission above layer 4.
  • Transmission above layer 4 supports two codewords;
  • the capability information is used to indicate that the layer mapping scheme that supports transmission enablement type 2 of layer 4 or above includes a layer mapping scheme that supports transmission enablement type 2 of layer 4, that is, layer 4 or above includes 4 layers;
  • the 4-layer transmission supports 2 codewords
  • the first codeword among the 2 codewords corresponds to the first layer number of 3 after layer mapping.
  • the second codeword after layer mapping corresponds to the second layer number of 1
  • the difference in the number of transmission layers between the first layer number and the second layer number is 2, that is, under the type 2 layer mapping scheme, the first
  • the maximum value of the difference in transmission layer number between the layer number and the second layer number is any value from zero to six.
  • ⁇ Capability information is used to indicate that the layer mapping scheme of type 2 is supported for transmission above layer 2.
  • Transmission above layer 2 supports 2 codewords.
  • the capability information is used to indicate that the layer mapping scheme that supports transmission enablement type 2 of layer 2 or above includes a layer mapping scheme that supports transmission enablement type 2 of layer 2, that is, layer 2 or above includes layer 2;
  • layer 2 transmission supports 2 codewords
  • the first codeword among the 2 codewords corresponds to the first layer number of 2 after layer mapping.
  • the second codeword corresponds to the second layer number after layer mapping is layer 0
  • the difference in the number of transmission layers between the first layer number and the second layer number is 2, that is, under the type 2 layer mapping scheme, the first The maximum value of the difference in transmission layer number between the layer number and the second layer number is any value from zero to six.
  • the technical solution provided by the embodiments of the present application shows that the terminal reports the terminal's capability information, the network device determines the indication information based on the capability information, and the terminal determines and enables the type one layer mapping scheme or type two based on the indication information. layer mapping scheme.
  • the technical solution provided by the embodiments of this application can send instruction information to the terminal according to the capability information reported by the terminal.
  • the terminal selects different layer mapping schemes according to the instruction information to achieve flexible scheduling, so that even when the channel performance between layers is greatly different, it can Ensure the quality of data transmission between terminals and network equipment.
  • the above embodiment introduces the codeword layer mapping method performed by the terminal. Next, the codeword layer mapping method performed by the network device will be further described.
  • the network device sends instruction information to instruct the terminal to determine and enable the target layer mapping scheme.
  • Figure 13 shows a flowchart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application. In this embodiment, this method is applied to network equipment. The method includes:
  • Step 1302 Send instruction information.
  • the network device sends indication information to the terminal, and the indication information is used to instruct the terminal to determine and enable the target mapping scheme.
  • the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme.
  • the maximum value of the difference in the number of layers after layer mapping two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • the first codeword corresponds to the first layer number after layer mapping
  • the second codeword corresponds to the second layer number after layer mapping
  • the layer number difference between the first layer number and the second layer number is zero or one.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • two codewords correspond to a maximum of 8 transmission layers.
  • 8 transmission layers are used as an example for explanation.
  • the network device instructs the terminal through indication information to determine and enable type 1 layer mapping.
  • the first codeword is mapped to layers 1 to 4
  • the second codeword is mapped to layers 5 to 8, that is, the first codeword is allocated to layers 1 to 4
  • the second codeword is allocated to layers 5 to 8. 8 layers, both codewords are mapped to 4 transmission layers, and the layer number difference between the two codewords is zero.
  • the first codeword is mapped to layers 1 to 2
  • the second codeword is mapped to layers 3 to 8, that is, the first codeword is mapped to layers 3 to 8.
  • the words are assigned to layers 1 to 2
  • the second codeword is assigned to layers 3 to 8
  • the first codeword is mapped to 2 transmission layers
  • the second codeword is mapped to 6 transmission layers
  • the layers between the two codewords The difference is four.
  • the network device sends indication information to the terminal, and the indication information is carried in at least one of the following signaling:
  • MAC Control Element Media Access Control Element
  • DCI Downlink Control Information
  • Multicast control downlink control information (GroupControl-Downlink Control Information, GC-DCI) signaling, but is not limited to this, and the embodiment of the present application does not specifically limit this.
  • the terminal enables the type 1 layer mapping scheme by default, and the network device configures the type 2 layer mapping scheme through RRC signaling;
  • the network device configures/updates the MACCE signaling to indicate whether the terminal's Physical Uplink Shared Channel (PUSCH) will subsequently adopt the Type 2 layer mapping scheme;
  • PUSCH Physical Uplink Shared Channel
  • the network device switches the dynamic indication domain through the single TRP and multi-TRP transmission associated with DCI signaling by default.
  • the type 1 layer mapping scheme is used for STRP, and the type 2 layer mapping scheme is used for MTRP;
  • the code points in other indication fields except the antenna port indication field can be extended when needed.
  • the indication information sent by the network device to the terminal is carried in DCI signaling or GC-DCI signaling
  • the indication information is carried in the DCI signaling or GC-DCI signaling.
  • code points in other indication fields except the antenna port indication field are not limited to this, and the embodiment of the present application does not specifically limit this.
  • the new indication domain refers to the indication domain newly defined in DCI.
  • the code point in the antenna port indication field refers to a value of a bit sequence composed of one bit or multiple bits. For example, "001".
  • the indication information is carried in the single-TRP and multi-TRP transmission switching dynamic indication fields of DCI signaling.
  • the code point in the single-TRP and multi-TRP transmission switching dynamic indication fields is the first value, it indicates STRP. and type 1 layer mapping scheme; when the code point in the single TRP and multi-TRP transmission switching dynamic indication field is the second value, it indicates MTRP and type 2 layer mapping scheme.
  • the indication information is carried in the single TRP and multiple TRP transmission switching dynamic indication fields of DCI signaling.
  • the code points in the single TRP and multiple TRP transmission switching dynamic indication fields are "00" and "01", it indicates STRP and type 1.
  • Layer mapping scheme when the code points in the single TRP and multi-TRP transmission switching dynamic indication field are "10" and "11”, it indicates the layer mapping scheme of MTRP and Type 2.
  • the network device instructs the terminal to determine and enable the target layer mapping scheme, that is, the network device instructs the terminal to determine and enable the layer mapping scheme of type 1 through indication information; or the network device instructs the terminal to determine and enable the layer mapping scheme of type 1 through indication information. Any mapping scheme in Type 2; or, the network device instructs the terminal through indication information to determine and enable the Type 2 layer mapping scheme.
  • the type 2 layer mapping scheme includes at least one of the following situations:
  • the transmission of layer 4 or above supports the transmission of two codewords
  • the network device sends instruction information to the terminal.
  • the instruction information 00 represents type 2, 01 represents layers 5-8, 10 represents layer 4 or more, and 11 represents layer 2 or more.
  • the instruction information instructs the terminal to determine and enable the target layer mapping scheme.
  • the two codewords include a first codeword and a second codeword; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping.
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • the layer number difference between the first layer number and the second layer number can be any integer from zero to six, that is, the first layer number and the second layer number
  • the difference in the number of layers between the numbers may be zero or one, which is not limited in the embodiment of the present application.
  • the technical solution provided by the embodiments of the present application shows that the network device instructs the terminal to determine and enable a type 1 layer mapping scheme or a type 2 layer mapping scheme through indication information, and introduces the carrying position of the indication information. .
  • the technical solution provided by the embodiments of the present application enables the network device to instruct the terminal to determine and enable different layer mapping schemes through instruction information, so that even when there is a large difference in channel performance between layers, the communication between the terminal and the network device can be ensured. Data transfer quality.
  • the network device receives the terminal's capability information reported by the terminal, and the network device generates indication information based on the capability information.
  • Figure 14 shows a flowchart of a codeword layer mapping indication method provided by an exemplary embodiment of the present application. In this embodiment, this method is applied to network equipment. The method includes:
  • Step 1402 Receive capability information reported by the terminal.
  • the capability information is used to indicate that the layer mapping scheme of type 2 is supported.
  • the capability information may indicate support for a layer mapping scheme that enables Type 2 transmission for terminals, or may indicate support for a layer mapping scheme that enables Type 2 transmission for different layers of the terminal; this application does not describe the dimensionality of the capability information. any restrictive provisions.
  • Step 1404 Generate instruction information according to the capability information.
  • the network device receives the terminal's capability information reported by the terminal, and the terminal's capability information is used for the network device to generate indication information.
  • the network device configures different layer mapping schemes based on the capability information reported by the terminal, and selects a specific layer mapping scheme through MAC-CE/DCI.
  • the type 2 layer mapping scheme includes at least one of the following situations:
  • the transmission of layer 4 or above supports the transmission of two codewords
  • the capability information is used to indicate that the layer mapping scheme of type 2 is supported; specifically, the capability information includes but is not limited to any of the following:
  • ⁇ Capability information is used to indicate that the layer mapping scheme of type 2 is supported for transmission of layers 5 to 8. Transmissions above layer 5 support two codewords;
  • the 6-layer transmission supports two codewords.
  • the first codeword of the two codewords corresponds to the first layer number of 4 after layer mapping.
  • the second codeword after layer mapping corresponds to the second layer number of 2
  • the difference in the number of transmission layers between the first layer number and the second layer number is 2, that is, under the type 2 layer mapping scheme, the first
  • the maximum value of the difference in transmission layer number between the layer number and the second layer number is any value from zero to six.
  • ⁇ Capability information is used to indicate that the layer mapping scheme of type 2 is supported for transmission above layer 4.
  • Transmission above layer 4 supports two codewords;
  • the capability information is used to indicate that the layer mapping scheme that supports transmission enablement type 2 of layer 4 or above includes a layer mapping scheme that supports transmission enablement type 2 of layer 4, that is, layer 4 or above includes 4 layers;
  • the 4-layer transmission supports 2 codewords
  • the first codeword among the 2 codewords corresponds to the first layer number of 3 after layer mapping.
  • the second codeword after layer mapping corresponds to the second layer number of 1
  • the difference in the number of transmission layers between the first layer number and the second layer number is 2, that is, under the type 2 layer mapping scheme, the first
  • the maximum value of the difference in transmission layer number between the layer number and the second layer number is any value from zero to six.
  • ⁇ Capability information is used to indicate that the layer mapping scheme of type 2 is supported for transmission above layer 2.
  • Transmission above layer 2 supports 2 codewords.
  • the capability information is used to indicate that the layer mapping scheme that supports transmission enablement type 2 of layer 2 or above includes a layer mapping scheme that supports transmission enablement type 2 of layer 2, that is, layer 2 or above includes layer 2;
  • layer 2 transmission supports 2 codewords
  • the first codeword among the 2 codewords corresponds to the first layer number of 2 after layer mapping.
  • the second codeword corresponds to the second layer number after layer mapping is layer 0
  • the difference in the number of transmission layers between the first layer number and the second layer number is 2, that is, under the type 2 layer mapping scheme, the first The maximum value of the difference in transmission layer number between the layer number and the second layer number is any value from zero to six.
  • the technical solution provided by the embodiments of the present application shows that the network device receives the capability information of the terminal reported by the terminal, and the network device generates indication information based on the capability information.
  • the technical solution provided by the embodiments of this application can receive the capability information reported by the terminal, generate instruction information based on the capability information reported by the terminal, and instruct the terminal to select different layer mapping schemes to achieve flexible scheduling, so that in the case of large differences in channel performance between layers , and can also ensure the quality of data transmission between the terminal and network equipment.
  • Figure 15 shows a schematic structural diagram of a codeword layer mapping indication device provided by an exemplary embodiment of the present application.
  • the device includes:
  • the determination module 1501 is used to determine and enable the target layer mapping scheme, where the target layer mapping scheme is a type one layer mapping scheme or a type two layer mapping scheme;
  • the maximum value of the difference in the number of layers after layer mapping the two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • the two codewords include a first codeword and a second codeword; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping;
  • the layer number difference between the first layer number and the second layer number is zero or one
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • the determining and enabling the target layer mapping scheme includes at least one of the following situations:
  • the layer mapping scheme of type 1 is enabled by default
  • the type 2 layer mapping scheme is enabled by default
  • the type 2 layer mapping scheme is enabled.
  • the determination module 1501 is also used to receive indication information
  • the determination module 1501 is further configured to determine and enable the type one layer mapping scheme according to the indication information; or, determine and enable the type two layer mapping scheme according to the indication information. any layer mapping scheme; or, determine and enable the type 2 layer mapping scheme according to the indication information.
  • the indication information is carried in at least one of the following signaling:
  • the indication information is carried in the following information field of DCI signaling or GC-DCI signaling:
  • Single TRP and multiple TRP transmission switching dynamic indication fields When the code point in the single TRP and multiple TRP transmission switching dynamic indication fields is the first value, it indicates STRP and the layer mapping scheme of type one; the single TRP and When the code point in the multi-TRP transmission switching dynamic indication field is the second value, it indicates MTRP and the type 2 layer mapping scheme;
  • code points in other indication fields except the antenna port indication field.
  • the determination module 1501 is also configured to report the capability information of the terminal, and the capability information is used for the network device to generate the indication information.
  • the type 2 layer mapping scheme includes:
  • the transmission of layers 5 to 8 supports the transmission of the two codewords
  • the transmission of the two codewords is supported for transmission above 4 layers (including 4 layers);
  • the transmission of the two codewords is supported for transmission of layer 2 or above.
  • Figure 16 shows a schematic structural diagram of a codeword layer mapping indication device provided by an exemplary embodiment of the present application.
  • the device includes:
  • Sending module 1601 configured to send indication information, the indication information being used to instruct the terminal to determine and enable a target layer mapping scheme, where the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme;
  • the maximum value of the difference in the number of layers after layer mapping the two codewords is different between the layer mapping scheme of type one and the layer mapping scheme of type two.
  • the two codewords include a first codeword and a second codeword; the first codeword corresponds to the first layer number after layer mapping, and the second codeword corresponds to the second layer number after layer mapping. number of layers;
  • the layer number difference between the first layer number and the second layer number is zero or one
  • the maximum value of the layer number difference between the first layer number and the second layer number is any value from zero to six.
  • the sending module 1601 is further configured to instruct the terminal to determine and enable the layer mapping scheme of type one; or instruct the terminal to determine and enable any of the type two layer mapping schemes. A layer mapping scheme; or, instruct the terminal to determine and enable the type 2 layer mapping scheme.
  • the indication information is carried in at least one of the following signaling:
  • Multicast control downlink control information GC-DCI signaling Multicast control downlink control information GC-DCI signaling.
  • Single TRP and multiple TRP transmission switching dynamic indication fields When the code point in the single TRP and multiple TRP transmission switching dynamic indication fields is the first value, it indicates STRP and the layer mapping scheme of type one; the single TRP and When the code point in the multi-TRP transmission switching dynamic indication field is the second value, it indicates MTRP and the type 2 layer mapping scheme;
  • the receiving module 1602 is further configured to receive capability information reported by the terminal, and generate the indication information according to the capability information.
  • the type 2 layer mapping scheme includes:
  • the transmission of layers 5 to 8 supports the transmission of the two codewords
  • the transmission of the two codewords is supported for transmission above 4 layers (including 4 layers);
  • the transmission of the two codewords is supported for transmission above layer 2.
  • Figure 17 shows a schematic structural diagram of a communication device (terminal or network device) provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 1701, a receiver 1702, a transmitter 1703, a memory 1704 and a bus 1705.
  • the processor 1701 includes one or more processing cores.
  • the processor 1701 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1702 and the transmitter 1703 can be implemented as a communication component, and the communication component can be a communication chip.
  • Memory 1704 is connected to processor 1701 through bus 1705.
  • the memory 1704 can be used to store at least one instruction, and the processor 1701 is used to execute the at least one instruction to implement various steps of the timing advance reporting method and receiving method in NTN mentioned in the above method embodiment.
  • memory 1704 may be implemented by any type of volatile or non-volatile storage device, or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable Read-only memory (Electrically-Erasable Programmable Read Only Memory, EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, EPROM), static random access memory (Static Random Access Memory, SRAM), read-only memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory (Programmable Read-Only Memory, PROM).
  • magnetic or optical disks electrically erasable programmable Read-only memory (Electrically-Erasable Programmable Read Only Memory, EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, EPROM), static random access memory (Static Random Access Memory, SRAM), read-only memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory
  • a terminal device includes a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor.
  • the processor is configured to load and execute the executable instructions.
  • the instructions are executed to implement the layer mapping indication method of codewords as described above.
  • a network device includes a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor.
  • the processor is configured to load and execute executable instructions to implement the codeword layer mapping indication method as described above.
  • a chip is provided.
  • the chip includes a programmable logic circuit or a program.
  • the chip is used to implement the layer mapping indication method of codewords as described above.
  • a computer-readable storage medium is also provided, with executable instructions stored in the readable storage medium, and the executable instructions are loaded and executed by the processor to implement The layer mapping indication method of codewords as described above.
  • a computer program product is also provided, with executable instructions stored in the computer program product, and the executable instructions are loaded and executed by the processor to achieve the above The codeword layer mapping indication method.

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Abstract

本申请公开了一种码字的层映射指示方法、装置、设备及存储介质，涉及通信技术领域。所述码字的层映射指示方法，包括：终端确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案。本申请提供的类型二的层映射方案，能够灵活配置每个码字在映射后的层数，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。

Description

码字的层映射指示方法、装置、设备及存储介质 技术领域
本申请涉及通信技术领域，特别涉及一种码字的层映射指示方法、装置、设备及存储介质。
背景技术
多输入多输出系统(Multi-input Multi-output，MIMO)是一种无线通信系统，它利用多重发射天线和多重接收天线进行数据传输。
在终端与网络设备进行数据传输过程中，由于码字与发送天线的数量不一致，需要按照一定规则将码字映射到不同的数据层。比如在终端存在4个发送天线的场景下，将两个码字中的第一码字映射至传输层1和传输层2，将两个码字中的第二码字映射至传输层3和传输层4。
但上述映射方式的灵活性有限，在某些场景下的数据传输质量较差，比如各个传输层的层间信道性能差异较大的情况下，上述映射方式会出现性能损失。
发明内容
本申请实施例提供了一种码字的层映射指示方法、装置、设备及存储介质，终端确定并使能类型一的层映射方案或类型二的层映射方案。
根据本申请的一个方面，提供了一种码字的层映射指示方法，所述方法包括：
确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
根据本申请的一个方面，提供了一种码字的层映射指示方法，所述方法包括：
发送指示信息，所述指示信息用于指示终端确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
根据本申请的一个方面，提供了一种码字的层映射指示装置，所述装置包括：
确定模块，用于确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
根据本申请的一个方面，提供了一种码字的层映射指示装置，所述装置包括：
发送模块，用于发送指示信息，所述指示信息用于指示终端确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
根据本申请的一个方面，提供了一种终端设备，所述终端设备包括处理器、与所述处理器相连的收发器和用于存储所述处理器的可执行指令的存储器，所述处理器被配置为加载并执行所述可执行指令以实现如上所述的码字的层映射指示方法。
根据本申请的一个方面，提供了一种网络设备，所述网络设备包括：处理器、与所述处理器相连的收发器和用于存储所述处理器的可执行指令的存储器，所述处理器被配置为加载并执行所述可执行指令以实现如上所述的码字的层映射指示方法。
根据本申请的一个方面，提供了一种计算机可读存储介质，所述可读存储介质中存储有 可执行指令，所述可执行指令由所述处理器加载并执行以实现如上所述的码字的层映射指示方法。
根据本申请的一个方面，提供了一种计算机程序产品，所述计算机程序产品中存储有可执行指令，所述可执行指令由所述处理器加载并执行以实现如上所述的码字的层映射指示方法。
本申请实施例提供的技术方案至少包括如下有益效果：
在本申请实施例中，终端确定并使能类型一的层映射方案或类型二的层映射方案。本申请提供的类型二的层映射方案，能够灵活配置每个码字在映射后的层数，比如在终端存在8个发送天线的情况下，第一码字映射到2个传输层，第二码字映射到6个传输层，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请一个示例性实施例提供的通信系统的示意图；
图2是本申请一个示例性实施例提供的码字的层映射指示方法的流程图；
图3是本申请一个示例性实施例提供的类型一的层映射方法的示意图；
图4是本申请一个示例性实施例提供的类型二的层映射方法的示意图；
图5是本申请一个示例性实施例提供的类型二的层映射方法的示意图；
图6是本申请一个示例性实施例提供的类型二的层映射方法的示意图；
图7是本申请一个示例性实施例提供的码字的层映射指示方法的示意图；
图8是本申请一个示例性实施例提供的码字的层映射指示方法的示意图；
图9是本申请一个示例性实施例提供的码字的层映射指示方法的示意图；
图10是本申请一个示例性实施例提供的码字的层映射指示方法的流程图；
图11是本申请一个示例性实施例提供的码字的层映射指示方法的流程图；
图12是本申请一个示例性实施例提供的码字的层映射指示方法的流程图；
图13是本申请一个示例性实施例提供的码字的层映射指示方法的流程图；
图14是本申请一个示例性实施例提供的码字的层映射指示方法的流程图；
图15是本申请一个示例性实施例提供的码字的层映射指示装置的结构示意图；
图16是本申请一个示例性实施例提供的码字的层映射指示装置的结构示意图；
图17是本申请一个示例性实施例示出的通信设备的框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以 被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
出于简洁和便于理解的目的，本文在表征大小关系时，所使用的术语为“大于”或“小于”。但对于本领域技术人员来说，可以理解：术语“大于”也涵盖了“大于等于”的含义，“小于”也涵盖了“小于等于”的含义。
在对本申请实施例提供的小区选择方法进行详细介绍之前，先对本申请实施例涉及的移动通信系统进行简单介绍。
图1示出了本申请一个示例性实施例提供的通信系统的框图，该通信系统可以包括：网络设备12和终端14。
网络设备12可以是基站，所述基站是一种部署在接入网中用以为终端提供无线通信功能的装置。基站可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在LTE系统中，称为eNodeB或者eNB；在5G NR-U系统中，称为gNodeB或者gNB。随着通信技术的演进，“基站”这一描述可能会变化。为方便本申请实施例中，上述为终端14提供无线通信功能的装置统称为网络设备。可选的，网络设备12之间的通信接口为Xn接口。
终端14可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备，移动台(Mobile Station，MS)，终端(terminal device)等等。为方便描述，上面提到的设备统称为终端。网络设备12与终端14之间通过某种空口技术互相通信，例如Uu接口。可选的，终端14支持在非激活态执行小数据传输过程。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile Communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、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)系统、先进的长期演进(Advanced Long Term Evolution，LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、非授权频段上的LTE(LTE-based access to Unlicensed spectrum，LTE-U)系统、NR-U系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、下一代通信系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车辆间(Vehicle to Vehicle，V2V)通信以及车联网(Vehicle to Everything，V2X)系统等。本申请实施例也可以应用于这些通信系统。
图2示出了本申请一个示例性实施例提供的码字的层映射指示方法的流程图。。该方法包括：
步骤202：确定并使能目标层映射方案，目标层映射方案是类型一的层映射方案或类型二的层映射方案。
示例性地，在上行链路或下行链路中，确定并使能或激活或支持目标层映射方案，即在上行链路中，终端确定并使能类型一的层映射方案或类型二的层映射方案；在下行链路中，网络设备确定并使能类型一的层映射方案或类型二的层映射方案，本申请实施例以上行链路为例进行说明。
类型一的层映射方案是指将码字映射到单个或多个传输层的一种方案。
类型二的层映射方案是指将码字映射到单个或多个传输层的另一种方案。
可以理解的是，类型一的层映射方案和类型二的层映射方案是代表不同的层映射方案，本申请实施例对层映射方案的命名不作具体限定。
码字(Codeword，CW)是指源自同一信息位块并进行信道编码之后的数据。
层映射是指将码字分配到指定传输层的机制，也可称为"码字到层映射"或"码字-层映射"。
可以理解的是，层映射可以是终端确定上行链路的"码字到层映射"过程，也可以是网络设备确定下行链路的"码字到层映射"过程，本申请实施例对此不作限定。
示例性地，类型一的层映射方案和类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。以两个码字包括第一码字和第二码字为例，第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数；
类型一的层映射方案下，第一层数和第二层数之间的层数差值为零或一。
类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为零至六中的任意值。例如，在上行链路中，两个码字最多对应8个传输层，本实施例中以8个传输层为例进行说明，在终端确定并使能类型一的层映射方案的情况下，第一码字映射到1至4层，第二码字映射到5至8层，即，将第一码字分配到1至4层，将第二码字分配到5至8层，两个码字均映射到4个传输层，两个码字之间的层数差值为零。
在终端确定并使能类型二的层映射方案的情况下，第一码字映射到1至2层，第二码字映射到3至8层，即，将第一码字分配到1至2层，将第二码字分配到3至8层，第一码字映射到2个传输层，第二码字映射到6个传输层，两个码字之间的层数差值为四。
综上所述，本申请实施例提供的技术方案，确定并使能类型一的层映射方案或类型二的层映射方案。本申请提供的类型二的层映射方案，能够灵活配置每个码字在映射后的层数，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。
接下来，对类型一的层映射方案和类型二的层映射方案进行示例性介绍，类型一的层映射方案和类型二的层映射方案既可以用于上行链路也可以用于下行链路。
类型一的层映射方案：
以总传输层数的最大值为8层为例，如图3所示，类型一的层映射方案包括1个码字和2个码字对应的8种层映射方案。在类型一的层映射方案下，1个码字进行层映射后对应的传输层数大于0、且小于或等于4。若2个码字包括第一码字和第二码字；第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数；在类型一的层映射方案下，第一层数与第二层数之间的层数差值为0或1，且第一层数和第二层数的总和大于4、且小于或等于8。示例性的，1个码字(包括CW0)对应的类型一的层映射方案包括以下4种：
·CW0映射至1个传输层；
比如，CW0映射至传输层1，总传输层数为1。
·CW0映射到2个传输层；
比如，CW0映射至传输层1和2，总传输层数为2。
·CW0映射到3个传输层；
比如，CW0映射至传输层1至3，总传输层数为3。
·CW0映射到4个传输层；
比如，CW0映射至传输层1至4，总传输层数为4；
2个码字(包括CW0和CW1)对应的类型一的层映射方案包括以下4种：
·CW0映射到2个传输层，CW1映射到3个传输层；
比如，CW0映射到传输层1和2，CW1映射到传输层3至5，总传输层数为5。
·CW0映射到3个传输层，CW1映射到3个传输层；
比如，CW0映射到传输层1至3，CW1映射到传输层4至6，总传输层数为5。
·CW0映射到3个传输层，CW1映射到4个传输层；
比如，CW0映射到传输层1至3，CW1映射到传输层4至7，总传输层数为5。
·CW0映射到4个传输层，CW1映射到4个传输层。
比如，CW0映射到传输层1至4，CW1映射到传输层5至8，总传输层数为8。
类型二的层映射方案：
以总传输层数的最大值为8层为例，如图4所示，类型二的层映射方案包括1个码字和2个码字对应的16种层映射方案。在类型二的层映射方案下，1个码字进行层映射后对应的传输层数大于0、且小于或等于4。
示例性的，如图4所示，1个码字(包括CW0)对应的类型2的层映射方案包括以下4种：
·CW0映射至1个传输层；
比如，CW0映射至传输层1，总传输层数为1。
·CW0映射到2个传输层；
比如，CW0映射至传输层1和2，总传输层数为2。
·CW0映射到3个传输层；
比如，CW0映射至传输层1至3，总传输层数为3。
·CW0映射到4个传输层；
比如，CW0映射至传输层1至4，总传输层数为4。
2个码字包括第一码字和第二码字；第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数；在类型二的层映射方案下，第一层数与第二层数之间的最大层数差值允许大于1，且第一层数和第二层数的总和大于1、且小于或等于8。
由上述类型一的层映射方案的描述可知，类型一的层映射方案中的第一层数与第二层数之间的差值为零或一，类型二的层映射方案第一层数与第二层数之间的最大层数差值允许大于1，可见类型二的层映射方案相较于类型一的层映射方案更加灵活。以总传输层数的最大值为8层为例，类型二的层映射方案中的第一层数和第二层数之间的层数差值可以为零至六中的任一整数。比如，CW0映射到传输层1，CW1映射到传输层2至7，总传输层数为8，第一层数和第二层数之间的层数差值为六。
可选地，类型二的层映射方案包括以下方案中的至少一种：
·对5至8层的传输支持传输两个码字；
或，
·对4层以上(含4层)的传输支持传输两个码字；
或，
·对2层以上的传输支持传输两个码字。
针对类型2的层映射方案中对5至8层的传输支持传输两个码字的方案。
如图4所示，在类型二的层映射方案为对5至8层的传输支持传输两个码字时，2个码字(包括CW0和CW1)对应的类型二的层映射方案包括以下12种：
·CW0映射到1个传输层，CW1映射到4个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2至5，总传输层数为5。
·CW0映射到2个传输层，CW1映射到3个传输层；
比如，CW0映射到传输层1和2，CW1映射到传输层3至5，总传输层数为5。
·CW0映射到1个传输层，CW1映射到5个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2至6，总传输层数为6。
·CW0映射到2个传输层，CW1映射到4个传输层；
比如，CW0映射到传输层1和2，CW1映射到传输层3至6，总传输层数为6。
·CW0映射到3个传输层，CW1映射到3个传输层；
比如，CW0映射到传输层1至3，CW1映射到传输层4至6，总传输层数为6。
·CW0映射到1个传输层，CW1映射到6个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2至7，总传输层数为7。
·CW0映射到2个传输层，CW1映射到5个传输层；
比如，CW0映射到传输层1和2，CW1映射到传输层3至7，总传输层数为7。
·CW0映射到3个传输层，CW1映射到4个传输层；
比如，CW0映射到传输层1至3，CW1映射到传输层4至7，总传输层数为7。
·CW0映射到1个传输层，CW1映射到7个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2至8，总传输层数为8。
·CW0映射到2个传输层，CW1映射到6个传输层；
比如，CW0映射到传输层1和2，CW1映射到传输层3至8，总传输层数为8。
·CW0映射到3个传输层，CW1映射到5个传输层；
比如，CW0映射到传输层1至3，CW1映射到传输层4至8，总传输层数为8。
·CW0映射到4个传输层，CW1映射到4个传输层。
比如，CW0映射到传输层1至4，CW1映射到传输层5至8，总传输层数为8。
针对类型2的层映射方案中对4层以上(含4层)的传输支持传输两个码字的方案。
如图5所示，在类型二的层映射方案为对4层以上(含4层)的传输支持传输两个码字时，2个码字(包括CW0和CW1)对应的类型二的层映射方案在图4的基础上还包括以下2种：
·CW0映射到1个传输层，CW1映射到3个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2至4，总传输层数为4。
·CW0映射到2个传输层，CW1映射到2个传输层；
比如，CW0映射到传输层1和2，CW1映射到传输层3和4，总传输层数为4。
针对类型2的层映射方案中对2层以上的传输支持传输两个码字的方案。
如图6所示，在类型二的层映射方案为对2层以上的传输支持传输两个码字时，2个码字(包括CW0和CW1)对应的类型二的层映射方案在图4的基础上还包括以下4种：
·CW0映射到1个传输层，CW1映射到1个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2，总传输层数为2。
·CW0映射到1个传输层，CW1映射到2个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2至3，总传输层数为3。
·CW0映射到1个传输层，CW1映射到3个传输层；
比如，CW0映射到传输层1，CW1映射到传输层2至4，总传输层数为4。
·CW0映射到2个传输层，CW1映射到2个传输层；
比如，CW0映射到传输层1和2，CW1映射到传输层3和4，总传输层数为4。
接下来，以上行链路中总传输层数的最大值为8层为例，对上行链路中的层映射方案进行示例性介绍：
类型一的层映射方案：
类型一的层映射方案下，第一层数和第二层数之间的层数差值为零或一。
示例性地，终端使能类型一的层映射方案，类型一的层映射方案将两个码字进行层映射后的层数差值为零或一，两个码字包括第一码字和第二码字；第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数。
例如，如图7所示，在上行链路中，第一码字901和第二码字902共对应8个传输层，在终端确定并使能类型一的层映射方案的情况下，将第一码字901和第二码字902进行码字-层映射503，得到第一码字901映射到1至4层，第二码字902映射到5至8层，即，第一码字901对应的第一层数为4，第二码字902对应的第二层数为4，第一层数和第二层数之间的层数差值为零，之后，将每一层对应的数据进行层-端口映射704映射到不同的天线端口， 即，通过预编码将第一码字901对应的1至4层的数据映射至解调参考信号端口一705，通过预编码将第二码字902对应的5至8层的数据映射至解调参考信号端口二706。
可以理解的是，第一码字901映射到1至4层，第二码字902映射到5至8层，只是代表将第一码字901映射了4层，比如，第一码字901可以映射到1、3、5、7层，本申请实施例中对该4层的顺序不作具体限定。
例如，如图8所示，在上行链路中，第一码字801和第二码字802共对应7个传输层，在终端确定并使能类型一的层映射方案的情况下，将第一码字801和第二码字802进行码字-层映射803，得到第一码字801映射到1至3层，第二码字802映射到4至7层，即，第一码字801对应的第一层数为3，第二码字802对应的第二层数为4，第一层数和第二层数之间的层数差值为一，之后，将每一层对应的数据进行层-端口映射804映射到不同的天线端口，即，通过预编码将第一码字801对应的1至3层的数据映射至解调参考信号端口一805，通过预编码将第二码字802对应的4至7层的数据映射至解调参考信号端口二806。
类型二的层映射方案：
类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为零至六中的任意值。
可选地，类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为二至六中的任意值。
示例性地，终端使能类型二的层映射方案，类型二的层映射方案将两个码字进行层映射后的层数差值最大值为零至六中的任意值。两个码字包括第一码字和第二码字；第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数。在类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为零至六中的任意值。
可选地，在类型二的层映射方案下，第一层数和第二层数之间的层数差值可以为零至六中的任一整数，本申请实施例对此不作限定。
可选地，在总传输层数的最大值为8层(传输层1至传输层8)的情况下，类型二的层映射方案包括以下方案中的至少一种：
对5至8层的传输支持传输两个码字；
或，对4层以上(含4层)的传输支持传输两个码字；
或，对2层以上的传输支持传输两个码字。
例如，如图9所示，在上行链路中，第一码字901和第二码字902共对应8个传输层，在终端确定并使能类型二的层映射方案的情况下，将第一码字901和第二码字902进行码字-层映射903，得到第一码字901映射到1至6层，第二码字902映射到7至8层，即，第一码字901对应的第一层数为6，第二码字902对应的第二层数为2，第一层数和第二层数之间的层数差值为4，之后，将每一层对应的数据进行层-端口映射904映射到不同的天线端口，即，通过预编码将第一码字901对应的1至6层的数据映射至解调参考信号端口一905，通过预编码将第二码字902对应的7至8层的数据映射至解调参考信号端口二906。
可以理解的是，在终端确定并使能类型二的层映射方案的情况下，第一层数和第二层数之间的层数差值可以为零至六中的任一整数，可得到如下情况中的至少一种：
情况一：第一码字901映射到1层，第二码字902映射到2至8层；
情况二：第一码字901映射到1至2层，第二码字902映射到3至8层；
情况三：第一码字901映射到1至3层，第二码字902映射到4至8层；
情况四：第一码字901映射到1至4层，第二码字902映射到5至8层；
情况五：第一码字901映射到1至5层，第二码字902映射到6至8层；
情况六：第一码字901映射到1至6层，第二码字902映射到7至8层；
情况七：第一码字901映射到1至7层，第二码字902映射到8层。
在终端确定并使能类型二的层映射方案的情况下，第一码字901和第二码字902的码字- 层映射过程可参见上述实施例，本处不再赘述。
终端通过默认规则确定并使能目标层映射方案。
图10示出了本申请一个示例性实施例提供的码字的层映射指示方法的流程图。本实施例以该方法应用于终端。该方法包括：
步骤1002：确定并使能目标层映射方案。
目标层映射方案为类型一的层映射方案或类型二的层映射方案。
示例性地，本申请实施例以上行链路为例进行说明，在上行链路中，终端确定并使能或激活或支持目标层映射方案，即终端确定并使能类型一的层映射方案或类型二的层映射方案。
在一种可能的实现方式中，终端确定并使能目标层映射方案，包括如下情况中的至少一种：
·终端默认使能类型一的层映射方案；
·终端默认使能类型二的层映射方案；
·在终端支持类型二的层映射方案的情况下，使能类型二的层映射方案；
·对于单传输接收点(SingleTransmission and Reception Point，STRP)传输，使能类型一的层映射方案；
·对于STRP且总层数为1至4层的传输，使能类型一的层映射方案；对于STRP且总层数为5至8层的传输，使能类型二的层映射方案；
·对于STRP且总层数为1的传输，使能类型一的层映射方案；对于STRP且总层数为2至8层的传输，使能类型二的层映射方案；
·对于多传输接收点(MultiTransmission and Reception Point，MTRP)传输，使能类型二的层映射方案。
其中，单传输接收点STRP也可称为“单TRP”，多传输接收点MTRP也可称为“多TRP”，本申请对此不作限定。
可以理解的是，上述终端确定并使能目标层映射方案的情况不限于此，层映射方案中可以任意组合，本申请实施例对此不作限定。
例如，对于支持类型二的层映射方案的终端，终端默认使能类型二的层映射方案。
综上所述，本申请实施例提供的技术方案，示出了终端通过默认规则确定并使能类型一的层映射方案或类型二的层映射方案的多种情况。本申请提供的类型二的层映射方案，能够灵活配置每个码字在映射后的层数，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。
终端根据网络设备的指示信息确定并使能目标层映射方案。
图11示出了本申请一个示例性实施例提供的码字的层映射指示方法的流程图。本实施例以该方法应用于终端。该方法包括：
步骤1102：接收指示信息。
示例性地，终端接收网络设备发送的指示信息，指示信息用于指示终端确定并使能目标映射方案。
目标层映射方案为类型一的层映射方案或类型二的层映射方案。
示例性地，在上行链路或下行链路中，终端确定并使能或激活或支持目标层映射方案，即终端确定并使能类型一的层映射方案或类型二的层映射方案，本申请实施例以上行链路为例进行说明。
类型一的层映射方案和类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。以两个码字包括第一码字和第二码字为例，第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数；
类型一的层映射方案下，第一层数和第二层数之间的层数差值为零或一。
类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为零至六中的任 意值。
在一种可能的实现方式中，终端接收网络设备发送的指示信息，指示信息携带在如下信令中的至少一种：
无线资源控制(Radio Resource Control，RRC)信令；
媒体接入控制控制单元(MAC Control Element，MACCE)信令；
下行控制信息(Downlink Control Information，DCI)信令；
组播控制下行控制信息(GroupControl-Downlink Control Information，GC-DCI)信令，但不限于此，本申请实施例对此不作具体限定。
在一种可能的实现方式中，终端接收网络设备发送的指示信息，在指示信息携带在DCI信令或GC-DCI信令的情况下，指示信息携带在DCI信令或GC-DCI信令的如下信息域中的至少一种：
单TRP和多TRP传输切换单TRP和多TRP传输切换动态指示域；
或，新增指示域；
或，天线端口指示域中的码点；
或，除天线端口指示域的其他指示域中的码点，但不限于此，本申请实施例对此不作具体限定。
其中，新增指示域是指在DCI中新定义的指示域。
天线端口指示域中的码点是指一个比特或多个比特组成的比特序列的一个取值。比如“001”。
示例性地，以指示信息携带在DCI信令的单TRP和多TRP传输切换动态指示域为例进行说明，单TRP和多TRP传输切换动态指示域中的码点为第一取值时指示STRP和类型一的层映射方案；单TRP和多TRP传输切换动态指示域中的码点为第二取值时指示MTRP和类型二的层映射方案。
示例性地，指示信息携带在DCI信令的单TRP和多TRP传输切换动态指示域，单TRP和多TRP传输切换动态指示域中的码点为“00”和“01”时指示STRP和类型一的层映射方案，例如，在单TRP和多TRP传输切换动态指示域中的码点为“00”时指示TRP1发送的单TRP传输；在单TRP和多TRP传输切换动态指示域中的码点为“01”时指示TRP2发送的单TRP传输；单TRP和多TRP传输切换动态指示域中的码点为“10”和“11”时指示MTRP和类型二的层映射方案，例如，在单TRP和多TRP传输切换动态指示域中的码点为“10”时指示TRP1和TRP2传输的多TRP模式，比如，发送顺序为TRP1，TRP2；在单TRP和多TRP传输切换动态指示域中的码点为“11”时指示TRP1和TRP2传输的多TRP模式，比如，发送顺序为TRP2，TRP1。
步骤1104：根据指示信息确定并使能目标层映射方案。
示例性地，终端根据指示信息确定并使能目标层映射方案，即，终端根据指示信息确定并使能类型一的层映射方案；或，终端根据指示信息确定并使能类型二中的任一映射方案；或，终端根据指示信息确定并使能类型二的层映射方案。
可选地，类型二的层映射方案包括如下情况中的至少一种：
对5至8层的传输支持传输两个码字；
或，对4层以上(含4层)的传输支持传输两个码字；
或，对2层以上的传输支持传输两个码字。
例如，终端接收网络设备发送的指示信息，指示信息中00代表类型二，01代表5-8层，10代表4层以上，11代表2层以上，终端根据指示信息确定并使能目标层映射方案。
示例性地，两个码字包括第一码字和第二码字；第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数。在类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为零至六中的任意值。
可选地，在类型二的层映射方案下，第一层数和第二层数之间的层数差值可以为零至六中的任一整数，即，第一层数和第二层数之间的层数差值可以为零或一，本申请实施例对此不作限定。
综上所述，本申请实施例提供的技术方案，示出了终端根据指示信息确定并使能类型一的层映射方案或类型二的层映射方案，并介绍了指示信息的携带位置。本申请实施例提供的技术方案能够使得终端根据指示信息选择不同的层映射方案实现灵活调度，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。
终端上报能力信息，终端根据指示信息确定并使能目标层映射方案。
图12示出了本申请一个示例性实施例提供的码字的层映射指示方法的流程图。本实施例以该方法应用于终端。该方法包括：
步骤1202：上报终端的能力信息，能力信息用于供网络设备生成指示信息。
示例性的，能力信息用于指示支持使能类型二的层映射方案。
示例性的，能力信息可以指示支持对终端传输使能类型二的层映射方案，也可以指示支持对终端的不同层传输使能类型二的层映射方案；本申请对能力信息的描述维度不做出任何限制性规定。在一种可能的实现方式中，终端上报终端的能力信息，终端的能力信息用于供网络设备生成指示信息。
可选地，类型二的层映射方案包括如下情况中的至少一种：
对5至8层的传输支持传输两个码字；
或，对4层以上(含4层)的传输支持传输两个码字；
或，对2层以上的传输支持传输两个码字。
示例性的，能力信息用于指示支持使能类型二的层映射方案；具体的，能力信息包括但不限于如下任意一种：
·能力信息用于指示支持对5至8层的传输使能类型二的层映射方案，5层以上的传输均支持两个码字；
比如，在对6层的传输使能类型二的层映射方案的情况下，6层的传输支持两个码字，两个码字中第一码字进行层映射后对应第一层数为4层，第二码字进行层映射后对应第二层数为2层，第一层数和第二层数之间的传输层数差值为2，即类型二的层映射方案下，第一层数和第二层数之间的传输层数差值的最大值为零至六中的任意值。
·能力信息用于指示支持对4层以上的传输使能类型二的层映射方案，4层以上的传输均支持两个码字；
需要说明的是，能力信息用于指示支持对4层以上的传输使能类型二的层映射方案包括支持4层的传输使能类型二的层映射方案，也即4层以上含4层；
例如，在对4层的传输使能类型二的层映射方案的情况下，4层的传输支持2个码字，2个码字中第一码字进行层映射后对应第一层数为3层，第二码字进行层映射后对应第二层数为1层，第一层数和第二层数之间的传输层数差值为2，即类型二的层映射方案下，第一层数和第二层数之间的传输层数差值的最大值为零至六中的任意值。
·能力信息用于指示支持对2层以上的传输使能类型二的层映射方案，2层以上的传输均支持2个码字。
需要说明的是，能力信息用于指示支持对2层以上的传输使能类型二的层映射方案包括支持2层的传输使能类型二的层映射方案，也即2层以上含2层；
例如，在对2层的传输使能类型二的层映射方案的情况下，2层的传输支持2个码字，2个码字中第一码字进行层映射后对应第一层数为2层，第二码字进行层映射后对应第二层数为0层，第一层数和第二层数之间的传输层数差值为2，即类型二的层映射方案下，第一层数和第二层数之间的传输层数差值的最大值为零至六中的任意值。
综上所述，本申请实施例提供的技术方案，示出了终端上报终端的能力信息，网络设备 根据能力信息确定指示信息，终端根据指示信息确定并使能类型一的层映射方案或类型二的层映射方案。本申请实施例提供的技术方案能够根据终端上报的能力信息向终端发送指示信息，终端根据指示信息选择不同的层映射方案实现灵活调度，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。
上述实施例介绍了由终端执行的码字层映射方法，接下来将就网络设备执行的码字层映射方法作进一步描述。
网络设备发送指示信息，指示终端确定并使能目标层映射方案。
图13示出了本申请一个示例性实施例提供的码字的层映射指示方法的流程图。本实施例以该方法应用于网络设备。该方法包括：
步骤1302：发送指示信息。
示例性地，网络设备向终端发送指示信息，指示信息用于指示终端确定并使能目标映射方案。
目标层映射方案为类型一的层映射方案或类型二的层映射方案。
类型一的层映射方案和类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。以两个码字包括第一码字和第二码字为例，第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数；
类型一的层映射方案下，第一层数和第二层数之间的层数差值为零或一。
类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为零至六中的任意值。
例如，在上行链路中，两个码字最多对应8个传输层，本实施例中以8个传输层为例进行说明，在网络设备通过指示信息指示终端确定并使能类型一的层映射方案的情况下，第一码字映射到1至4层，第二码字映射到5至8层，即，将第一码字分配到1至4层，将第二码字分配到5至8层，两个码字均映射到4个传输层，两个码字之间的层数差值为零。
在网络设备通过指示信息指示终端确定并使能类型二的层映射方案的情况下，第一码字映射到1至2层，第二码字映射到3至8层，即，将第一码字分配到1至2层，将第二码字分配到3至8层，第一码字映射到2个传输层，第二码字映射到6个传输层，两个码字之间的层数差值为四。
在一种可能的实现方式中，网络设备向终端发送指示信息，指示信息携带在如下信令中的至少一种：
无线资源控制(Radio Resource Control，RRC)信令；
媒体接入控制控制单元(MAC Control Element，MACCE)信令；
下行控制信息(Downlink Control Information，DCI)信令；
组播控制下行控制信息(GroupControl-Downlink Control Information，GC-DCI)信令，但不限于此，本申请实施例对此不作具体限定。
例如，终端默认使能类型一的层映射方案，网络设备通过RRC信令配置类型二的层映射方案；
或，网络设备通过MACCE信令配置/更新指示终端的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)是否后续采用类型二的层映射方案；
或，网络设备通过默认关联DCI信令的单TRP和多TRP传输切换动态指示域，STRP时采用类型一的层映射方案，MTRP时采用类型二的层映射方案；
或，DCI中增加独立指示域；
或，通过天线端口指示域中的码点增加信息量来指示终端确定并使能层映射方案；
或，除天线端口指示域的其他指示域中的码点，在需要时可以扩展指示域。
在一种可能的实现方式中，网络设备向终端发送的指示信息，在指示信息携带在DCI信令或GC-DCI信令的情况下，指示信息携带在DCI信令或GC-DCI信令的如下信息域中的至 少一种：
单TRP和多TRP传输切换动态指示域；
或，新增指示域；
或，天线端口指示域中的码点；
或，除天线端口指示域的其他指示域中的码点，但不限于此，本申请实施例对此不作具体限定。
其中，新增指示域是指在DCI中新定义的指示域。
天线端口指示域中的码点是指一个比特或多个比特组成的比特序列的一个取值。比如“001”。
示例性地，以指示信息携带在DCI信令的单TRP和多TRP传输切换动态指示域为例进行说明，单TRP和多TRP传输切换动态指示域中的码点为第一取值时指示STRP和类型一的层映射方案；单TRP和多TRP传输切换动态指示域中的码点为第二取值时指示MTRP和类型二的层映射方案。
例如，指示信息携带在DCI信令的单TRP和多TRP传输切换动态指示域，单TRP和多TRP传输切换动态指示域中的码点为“00”和“01”时指示STRP和类型一的层映射方案；单TRP和多TRP传输切换动态指示域中的码点为“10”和“11”时指示MTRP和类型二的层映射方案。
示例性地，网络设备指示终端确定并使能目标层映射方案，即，网络设备通过指示信息指示终端确定并使能类型一的层映射方案；或，网络设备通过指示信息指示终端确定并使能类型二中的任一映射方案；或，网络设备通过指示信息指示终端确定并使能类型二的层映射方案。
可选地，类型二的层映射方案包括如下情况中的至少一种：
对5至8层的传输支持传输两个码字；
或，对4层以上(含4层)的传输支持传输两个码字；
或，对2层以上的传输支持传输两个码字。
例如，网络设备向终端发送指示信息，指示信息中00代表类型二，01代表5-8层，10代表4层以上，11代表2层以上，指示信息指示终端确定并使能目标层映射方案。
示例性地，两个码字包括第一码字和第二码字；第一码字进行层映射后对应第一层数，第二码字进行层映射后对应第二层数。在类型二的层映射方案下，第一层数和第二层数之间的层数差值的最大值为零至六中的任意值。
可选地，在类型二的层映射方案下，第一层数和第二层数之间的层数差值可以为零至六中的任一整数，即，第一层数和第二层数之间的层数差值可以为零或一，本申请实施例对此不作限定。
综上所述，本申请实施例提供的技术方案，示出了网络设备通过指示信息指示终端确定并使能类型一的层映射方案或类型二的层映射方案，并介绍了指示信息的携带位置。本申请实施例提供的技术方案能够使得网络设备通过指示信息指示终端确定并使能不同的层映射方案，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。
网络设备接收终端上报的终端的能力信息，网络设备根据能力信息生成指示信息。
图14示出了本申请一个示例性实施例提供的码字的层映射指示方法的流程图。本实施例以该方法应用于网络设备。该方法包括：
步骤1402：接收终端上报的能力信息。
示例性的，能力信息用于指示支持使能类型二的层映射方案。
示例性的，能力信息可以指示支持对终端传输使能类型二的层映射方案，也可以指示支持对终端的不同层传输使能类型二的层映射方案；本申请对能力信息的描述维度不做出任何 限制性规定。
步骤1404：根据能力信息生成指示信息。
在一种可能的实现方式中，网络设备接收终端上报的终端的能力信息，终端的能力信息用于供网络设备生成指示信息。
可选地，网络设备根据终端上报的能力信息配置不同的层映射方案，并通过MAC-CE/DCI选择具体的层映射方案。
可选地，类型二的层映射方案包括如下情况中的至少一种：
对5至8层的传输支持传输两个码字；
或，对4层以上(含4层)的传输支持传输两个码字；
或，对2层以上的传输支持传输两个码字。
示例性的，能力信息用于指示支持使能类型二的层映射方案；具体的，能力信息包括但不限于如下任意一种：
·能力信息用于指示支持对5至8层的传输使能类型二的层映射方案，5层以上的传输均支持两个码字；
比如，在对6层的传输使能类型二的层映射方案的情况下，6层的传输支持两个码字，两个码字中第一码字进行层映射后对应第一层数为4层，第二码字进行层映射后对应第二层数为2层，第一层数和第二层数之间的传输层数差值为2，即类型二的层映射方案下，第一层数和第二层数之间的传输层数差值的最大值为零至六中的任意值。
·能力信息用于指示支持对4层以上的传输使能类型二的层映射方案，4层以上的传输均支持两个码字；
需要说明的是，能力信息用于指示支持对4层以上的传输使能类型二的层映射方案包括支持4层的传输使能类型二的层映射方案，也即4层以上含4层；
例如，在对4层的传输使能类型二的层映射方案的情况下，4层的传输支持2个码字，2个码字中第一码字进行层映射后对应第一层数为3层，第二码字进行层映射后对应第二层数为1层，第一层数和第二层数之间的传输层数差值为2，即类型二的层映射方案下，第一层数和第二层数之间的传输层数差值的最大值为零至六中的任意值。
·能力信息用于指示支持对2层以上的传输使能类型二的层映射方案，2层以上的传输均支持2个码字。
需要说明的是，能力信息用于指示支持对2层以上的传输使能类型二的层映射方案包括支持2层的传输使能类型二的层映射方案，也即2层以上含2层；
例如，在对2层的传输使能类型二的层映射方案的情况下，2层的传输支持2个码字，2个码字中第一码字进行层映射后对应第一层数为2层，第二码字进行层映射后对应第二层数为0层，第一层数和第二层数之间的传输层数差值为2，即类型二的层映射方案下，第一层数和第二层数之间的传输层数差值的最大值为零至六中的任意值。
综上所述，本申请实施例提供的技术方案，示出了网络设备接收终端上报的终端的能力信息，网络设备根据能力信息生成指示信息。本申请实施例提供的技术方案能够接收终端上报的能力信息，根据终端上报的能力信息生成指示信息，指示终端选择不同的层映射方案实现灵活调度，使得在层间信道性能差异较大的情况下，也能够保证终端与网络设备之间的数据传输质量。
图15示出了本申请一个示例性实施例提供的码字的层映射指示装置的结构示意图。该装置包括：
确定模块1501，用于确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
所述两个码字包括第一码字和第二码字；所述第一码字进行层映射后对应第一层数，所述第二码字进行层映射后对应第二层数；
所述类型一的层映射方案下，所述第一层数和所述第二层数之间的层数差值为零或一；
所述类型二的层映射方案下，所述第一层数和所述第二层数之间的层数差值的最大值为零至六中的任意值。
在一种可能的实现方式中，所述确定并使能目标层映射方案，包括如下情况中的至少一种：
默认使能所述类型一的层映射方案；
默认使能所述类型二的层映射方案；
在所述终端支持所述类型二的层映射方案的情况下，使能所述类型二的层映射方案；
对于单传输接收点STRP传输，使能所述类型一的层映射方案；
对于STRP且总层数为1至4层的传输，使能所述类型一的层映射方案；对于STRP且总层数为5至8层的传输，使能所述类型二的层映射方案；
对于STRP且总层数为1的传输，使能所述类型一的层映射方案；对于STRP且总层数为2至8层的传输，使能所述类型二的层映射方案；
对于多传输接收点MTRP传输，使能所述类型二的层映射方案。
在一种可能的实现方式中，确定模块1501，还用于接收指示信息；
根据所述指示信息确定并使能目标层映射方案。
在一种可能的实现方式中，确定模块1501，还用于根据所述指示信息确定并使能所述类型一的层映射方案；或，根据所述指示信息确定并使能所述类型二中的任一层映射方案；或，根据所述指示信息确定并使能所述类型二的层映射方案。
示例性地，所述指示信息携带在如下信令中的至少一种：
无线资源控制RRC信令；
媒体接入控制控制单元MACCE信令；
下行控制信息DCI信令；
组播控制GC-DCI信令。
示例性地，所述指示信息携带在DCI信令或GC-DCI信令的如下信息域中：
单TRP和多TRP传输切换动态指示域，所述单TRP和多TRP传输切换动态指示域中的码点为第一取值时指示STRP和所述类型一的层映射方案；所述单TRP和多TRP传输切换动态指示域中的码点为第二取值时指示MTRP和所述类型二的层映射方案；
或，新增指示域；
或，天线端口指示域中的码点；
或，除所述天线端口指示域的其他指示域中的码点。
在一种可能的实现方式中，确定模块1501，还用于上报所述终端的能力信息，所述能力信息用于供网络设备生成所述指示信息。
所述类型二的层映射方案包括：
对5至8层的传输支持传输所述两个码字；
或，对4层以上(含4层)的传输支持传输所述两个码字；
或，对2层以上的传输支持传输所述两个码字。
图16示出了本申请一个示例性实施例提供的码字的层映射指示装置的结构示意图。该装置包括：
发送模块1601，用于发送指示信息，所述指示信息用于指示终端确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
示例性地，所述两个码字包括第一码字和第二码字；所述第一码字进行层映射后对应第一层数，所述第二码字进行层映射后对应第二层数；
所述类型一的层映射方案下，所述第一层数和所述第二层数之间的层数差值为零或一；
所述类型二的层映射方案下，所述第一层数和所述第二层数之间的层数差值的最大值为零至六中的任意值。
在一种可能的实现方式中，发送模块1601，还用于指示所述终端确定并使能所述类型一的层映射方案；或，指示所述终端确定并使能所述类型二中的任一层映射方案；或，指示所述终端确定并使能所述类型二的层映射方案。
所述指示信息携带在如下信令中的至少一种：
RRC信令；
MACCE信令；
DCI信令；
组播控制下行控制信息GC-DCI信令。
所述指示信息携带在DCI信令或GC-DCI信令的如下信息域中：
单TRP和多TRP传输切换动态指示域，所述单TRP和多TRP传输切换动态指示域中的码点为第一取值时指示STRP和所述类型一的层映射方案；所述单TRP和多TRP传输切换动态指示域中的码点为第二取值时指示MTRP和所述类型二的层映射方案；
或，
新增指示域；
或，
天线端口指示域中的码点；
或，
除所述天线端口指示域的其他指示域中的码点。
在一种可能的实现方式中，接收模块1602，还用于接收所述终端上报的能力信息，根据所述能力信息生成所述指示信息。
所述类型二的层映射方案包括：
对5至8层的传输支持传输所述两个码字；
或，
对4层以上(含4层)的传输支持传输所述两个码字；
或，
对2层以上的传输支持传输所述两个码字。
图17示出了本申请一个示例性实施例提供的通信设备(终端或网络设备)的结构示意图，该通信设备包括：处理器1701、接收器1702、发射器1703、存储器1704和总线1705。
处理器1701包括一个或者一个以上处理核心，处理器1701通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器1702和发射器1703可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器1704通过总线1705与处理器1701相连。
存储器1704可用于存储至少一个指令，处理器1701用于执行该至少一个指令，以实现上述方法实施例中提到的NTN中定时提前的上报方法和接收方法的各个步骤。
此外，存储器1704可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(Electrically-Erasable Programmable Read Only Memory，EEPROM)，可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)，静态随时存取存储器(Static Random Access Memory，SRAM)，只读存储器(Read-Only Memory，ROM)，磁存储器，快闪存储器，可编程只读存储器(Programmable Read-Only Memory，PROM)。
根据本申请的一个方面，提供了一种终端设备，该终端设备包括处理器、与处理器相连的收发器和用于存储处理器的可执行指令的存储器，处理器被配置为加载并执行可执行指令以实现如上所述的码字的层映射指示方法。
根据本申请的一个方面，提供了一种网络设备，该网络设备包括处理器，与处理器相连的收发器和用于存储处理器的可执行指令的存储器。其中，处理器被配置为加载并执行可执行指令以实现如上所述的码字的层映射指示方法。
根据本申请的一个方面，提供了一种芯片，该芯片包括可编程逻辑电路或程序，该芯片用于实现如上所述的码字的层映射指示方法。
在本申请的一个示例性实施例中，还提供了一种计算机可读存储介质，所述可读存储介质中存储有可执行指令，所述可执行指令由所述处理器加载并执行以实现如上所述的码字的层映射指示方法。
在本申请的一个示例性实施例中，还提供了一种计算机程序产品，所述计算机程序产品中存储有可执行指令，所述可执行指令由所述处理器加载并执行以实现如上所述的码字的层映射指示方法。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (22)

  1. 一种码字的层映射指示方法，其特征在于，所述方法由终端执行，所述方法包括：
    确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
    其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
  2. 根据权利要求1所述的方法，其特征在于，所述两个码字包括第一码字和第二码字；所述第一码字进行层映射后对应第一层数，所述第二码字进行层映射后对应第二层数；
    所述类型一的层映射方案下，所述第一层数和所述第二层数之间的层数差值为零或一；
    所述类型二的层映射方案下，所述第一层数和所述第二层数之间的层数差值的最大值为零至六中的任意值。
  3. 根据权利要求1所述的方法，其特征在于，所述确定并使能目标层映射方案，包括如下情况中的至少一种：
    默认使能所述类型一的层映射方案；
    默认使能所述类型二的层映射方案；
    在所述终端支持所述类型二的层映射方案的情况下，使能所述类型二的层映射方案；
    对于单传输接收点STRP传输，使能所述类型一的层映射方案；
    对于STRP且总层数为1至4层的传输，使能所述类型一的层映射方案；对于STRP且总层数为5至8层的传输，使能所述类型二的层映射方案；
    对于STRP且总层数为1的传输，使能所述类型一的层映射方案；对于STRP且总层数为2至8层的传输，使能所述类型二的层映射方案；
    对于多传输接收点MTRP传输，使能所述类型二的层映射方案。
  4. 根据权利要求1所述的方法，其特征在于，所述确定并使能目标层映射方案，包括：
    接收指示信息；
    根据所述指示信息确定并使能目标层映射方案。
  5. 根据权利要求4所述的方法，其特征在于，所述根据所述指示信息确定并使能目标层映射方案，包括：
    根据所述指示信息确定并使能所述类型一的层映射方案；
    或，
    根据所述指示信息确定并使能所述类型二中的任一层映射方案；
    或，
    根据所述指示信息确定并使能所述类型二的层映射方案。
  6. 根据权利要求4所述的方法，其特征在于，所述指示信息携带在如下信令中的至少一种：
    无线资源控制RRC信令；
    媒体接入控制控制单元MACCE信令；
    下行控制信息DCI信令；
    组播控制下行控制信息GC-DCI信令。
  7. 根据权利要求6所述的方法，其特征在于，所述指示信息携带在DCI信令或GC-DCI信令的如下信息域中：
    单TRP和多TRP传输切换动态指示域，所述单TRP和多TRP传输切换动态指示域中的码点为第一取值时指示STRP和所述类型一的层映射方案；所述单TRP和多TRP传输切换单TRP和多TRP传输切换动态指示域中的码点为第二取值时指示MTRP和所述类型二的层映射方案；
    或，
    新增指示域；
    或，
    天线端口指示域中的码点；
    或，
    除所述天线端口指示域的其他指示域中的码点。
  8. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    上报所述终端的能力信息，所述能力信息用于供网络设备生成所述指示信息。
  9. 根据权利要求1至8任一所述的方法，其特征在于，所述类型二的层映射方案包括：
    对5至8层的传输支持传输所述两个码字；
    或，
    对4层以上(含4层)的传输支持传输所述两个码字；
    或，
    对2层以上的传输支持传输所述两个码字。
  10. 一种码字的层映射指示方法，其特征在于，所述方法用于网络设备，所述方法包括：
    发送指示信息，所述指示信息用于指示终端确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
    其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
  11. 根据权利要求10所述的方法，其特征在于，所述两个码字包括第一码字和第二码字；所述第一码字进行层映射后对应第一层数，所述第二码字进行层映射后对应第二层数；
    所述类型一的层映射方案下，所述第一层数和所述第二层数之间的层数差值为零或一；
    所述类型二的层映射方案下，所述第一层数和所述第二层数之间的层数差值的最大值为零至六中的任意值。
  12. 根据权利要求10所述的方法，其特征在于，所述指示信息用于指示终端确定并使能目标层映射方案，包括：
    指示所述终端确定并使能所述类型一的层映射方案；
    或，
    指示所述终端确定并使能所述类型二中的任一层映射方案；
    或，
    指示所述终端确定并使能所述类型二的层映射方案。
  13. 根据权利要求12所述的方法，其特征在于，所述指示信息携带在如下信令中的至少一种：
    RRC信令；
    MACCE信令；
    DCI信令；
    组播控制下行控制信息GC-DCI信令。
  14. 根据权利要求13所述的方法，其特征在于，所述指示信息携带在DCI信令或GC-DCI信令的如下信息域中：
    单TRP和多TRP传输切换动态指示域，所述单TRP和多TRP传输切换动态指示域中的码点为第一取值时指示STRP和所述类型一的层映射方案；所述单TRP和多TRP传输切换动态指示域中的码点为第二取值时指示MTRP和所述类型二的层映射方案；
    或，
    新增指示域；
    或，
    天线端口指示域中的码点；
    或，
    除所述天线端口指示域的其他指示域中的码点。
  15. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    接收所述终端上报的能力信息；
    根据所述能力信息生成所述指示信息。
  16. 根据权利要求10至15任一所述的方法，其特征在于，所述类型二的层映射方案包括：
    对5至8层的传输支持传输所述两个码字；
    或，
    对4层以上(含4层)的传输支持传输所述两个码字；
    或，
    对2层以上的传输支持传输所述两个码字。
  17. 一种码字的层映射指示装置，其特征在于，所述装置包括：
    确定模块，用于确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
    其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
  18. 一种码字的层映射指示装置，其特征在于，所述装置包括：
    发送模块，用于发送指示信息，所述指示信息用于指示终端确定并使能目标层映射方案，所述目标层映射方案是类型一的层映射方案或类型二的层映射方案；
    其中，所述类型一的层映射方案和所述类型二的层映射方案将两个码字进行层映射后的层数差值的最大值不同。
  19. 一种终端设备，其特征在于，所述终端设备包括：处理器、与所述处理器相连的收发器和用于存储所述处理器的可执行指令的存储器，所述处理器被配置为加载并执行所述可执行指令以实现如权利要求1至9任一所述的码字的层映射指示方法。
  20. 一种网络设备，其特征在于，所述网络设备包括：处理器、与所述处理器相连的收发器和用于存储所述处理器的可执行指令的存储器，所述处理器被配置为加载并执行所述可执行指令以实现如权利要求10至16任一所述的码字的层映射指示方法。
  21. 一种计算机可读存储介质，其特征在于，所述可读存储介质中存储有可执行指令，所述可执行指令由所述处理器加载并执行以实现如权利要求1至16任一所述的码字的层映射指示方法。
  22. 一种计算机程序产品，所述计算机程序产品中存储有可执行指令，所述可执行指令由所述处理器加载并执行以实现如权利要求1至16任一所述的码字的层映射指示方法。
PCT/CN2022/084006 2022-03-30 2022-03-30 码字的层映射指示方法、装置、设备及存储介质 WO2023184217A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN105119697A (zh) * 2010-01-08 2015-12-02 华为技术有限公司 资源映射、码分复用方法及装置
CN110855329A (zh) * 2018-08-20 2020-02-28 电信科学技术研究院有限公司 一种确定码字映射方式的方法及装置
CN111213414A (zh) * 2017-08-11 2020-05-29 联想(北京)有限公司 确定dmrs和ptrs之间的关联

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105119697A (zh) * 2010-01-08 2015-12-02 华为技术有限公司 资源映射、码分复用方法及装置
CN111213414A (zh) * 2017-08-11 2020-05-29 联想(北京)有限公司 确定dmrs和ptrs之间的关联
CN110855329A (zh) * 2018-08-20 2020-02-28 电信科学技术研究院有限公司 一种确定码字映射方式的方法及装置

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