WO2019238131A1

WO2019238131A1 - Method for determining transmission block size, and transmission method and apparatus

Info

Publication number: WO2019238131A1
Application number: PCT/CN2019/091404
Authority: WO
Inventors: 吴艺群; 王超; 陈雁
Original assignee: 华为技术有限公司
Priority date: 2018-06-15
Filing date: 2019-06-14
Publication date: 2019-12-19
Also published as: CN110611549B; CN110611549A

Abstract

An embodiment of the present invention relates to the technical field of communications, and provided therein are a method for determining transmission block size, and a transmission method and apparatus. The present invention is used to reduce signaling overhead, and the solution comprises: a first device acquiring a parameter index; according to the parameter index and a preset mapping relationship, the first device determining a modulation order, bit rate, extension factor and number of non-orthogonal multiple access (NOMA) duplicate layers that correspond to the parameter index, wherein the preset mapping relationship comprises: at least one index, and parameter values of a group of parameters that are associated with each index among the at least one index, the group of parameters comprising: a modulation order, a bit rate, an extension factor and the number of NOMA duplicate layers; and according to the modulation order, bit rate, extension factor and number of NOMA duplicate layers corresponding to the parameter index, the first device determining the size of a transmission block that communicates with a second device.

Description

Method, transmission method and device for determining transmission block size

This application claims the priority of a Chinese patent application filed on June 15, 2018 with the State Intellectual Property Office, application number 201810623200.0, and application name "A Method, Transmission Method, and Device for Determining the Size of a Transmission Block", its entire content Incorporated by reference in this application.

Technical field

Embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, a transmission method, and a device for determining a transmission block size.

Background technique

In a wireless communication system, the channel quality of a wireless channel changes with time and frequency, exhibiting time-selective and frequency-selective fading properties. Wireless transmission can adjust the modulation and coding scheme (modulation and coding scheme, MCS) to adapt to the change of channel quality, thereby improving the reliability and throughput of wireless transmission. Tuning MCS is also called link adaptation. That is, the proper modulation order and code rate can usually be selected according to the channel quality. In a fifth-generation (5G) mobile communication system, which may also be referred to as a new radio (NR) system, several different MCS tables are defined, which respectively correspond to different application scenarios. As shown in Table 1, Table 1 shows an MCS table:

Table 1 Example of MCS table in NR

The modulation order corresponds to the number of bits of each modulation symbol, and the code rate corresponds to the ratio of the information bits to the coded bits (the information bits include the cyclic check bit). For a specified MCS table, the sending device can calculate the number of transmitted information bits according to the MCS index and the size of the allocated time-frequency resource. The number of transmitted information bits is also referred to as the transport block size (TBS).

Non-orthogonal multiple access (NOMA) technology uses the same time-frequency resources to transmit data through multiple sending devices or user equipment (user equipment) to improve system capacity. However, the MCS table in the NR is only designed for a scenario where a time-frequency resource is only used to transmit data of a single user equipment, and it is no longer applicable to the calculation of the transmission block size when the NOMA technology is used for transmission. Therefore, how to determine the TBS used in the transmission using NOMA technology has become an urgent problem.

Summary of the Invention

The embodiments of the present application provide a method, a transmission method, and a device for determining a transmission block size to reduce signaling overhead.

In a first aspect, an embodiment of the present application provides a method for determining a transmission block size, including: a first device acquiring a parameter index; and the first device determining a modulation order and a code corresponding to the parameter index according to the parameter index and a preset mapping relationship. Rate, spreading factor, and number of non-orthogonal multiple access NOMA multiplexing layers. The preset mapping relationship includes: at least one index, and a parameter value of a set of parameters associated with each index in the at least one index. The set of parameters includes: modulation order, code rate, spreading factor, and number of NOMA multiplexing layers; The first device determines a transmission block size for communication with the second device according to the modulation order, code rate, spreading factor, and number of NOMA multiplexing layers corresponding to the index.

An embodiment of the present application provides a method for determining a transmission block size. The first device determines a modulation order, a code rate, a spreading factor, and a non-orthogonal multiple access corresponding to the parameter index by acquiring a parameter index and combining a preset mapping relationship. Number of access NOMA multiplex layers. Then, a transmission block size for communication with the second device is determined according to a modulation order, a code rate, a spreading factor, and a number of non-orthogonal multiple access NOMA multiplexing layers. Compared with the prior art, information such as the number of layers of NOMA multiplexing and expansion factor does not require other signaling notifications, which can simplify signaling design and reduce signaling overhead.

In a possible design, the set of parameters further includes: spectral efficiency, and the preset mapping relationship includes at least two indexes, and there are multiple indexes associated with the same spectral efficiency value in the at least two indexes. In this way, the NOMA transmission can flexibly adjust the MCS according to the application scenario and realize link adaptation.

In a possible design, the parameter values of some parameters in a set of parameters corresponding to any two or more indexes of at least two indexes are different.

In a possible design, when the terminal uses multiple MIMO spatial layers for transmission, the first device determines the modulation order, code rate, expansion factor, and number of NOMA multiplexing layers corresponding to the parameter index. The transmission block size communicated with the second device includes the parameter value of the number of NOMA multiplexing layers corresponding to the parameter index of each MIMO spatial layer in the multiple MIMO spatial layers, the parameter value of the modulation order, and the code. The parameter value of the rate and the parameter value of the expansion factor determine the transmission block size used for communication with the second device. A set of parameters corresponding to different MIMO spatial layers may be the same or different. When multiple MIMO spatial layers correspond to the same set of parameters, the same parameter index can be used.

In a second aspect, an embodiment of the present application provides a method for determining a transmission block size, including: a first device acquiring a parameter index and an expansion factor; and the first device determining a modulation order corresponding to the parameter index according to the parameter index and a preset mapping relationship. Number, code rate and number of non-orthogonal multiple access NOMA multiplexing layers. The preset mapping relationship includes: at least one index, and a parameter value of a set of parameters associated with each index in the at least one index. The set of parameters includes: modulation order, code rate, and number of NOMA multiplexing layers; the first device The transmission block size used for communication with the second device is determined according to the expansion factor and the modulation order, code rate, and number of NOMA multiplexing layers corresponding to the parameter index.

An embodiment of the present invention provides a method for determining a transmission block size. A first device determines a modulation order, a code rate, and a non-orthogonal multiplicity corresponding to a parameter index by acquiring a parameter index and an expansion factor and combining a preset mapping relationship. Number of multiplexed NOMA access layers. Then, a transmission block size for communication with the second device is determined according to a modulation order, a code rate, a spreading factor, and a number of non-orthogonal multiple access NOMA multiplexing layers. Compared with the prior art, the number of NOMA multiplexing layers does not require other signaling notifications, which can simplify signaling design and reduce signaling overhead.

In a possible design, when the terminal uses multiple multiple-input multiple-output MIMO spatial layers for transmission, the first device determines according to the expansion factor and the modulation order, code rate, and number of NOMA multiplexing layers corresponding to the parameter index. The communication with the second device includes: the first device according to the expansion factor corresponding to each MIMO spatial layer in the multiple MIMO spatial layers, and the parameter value of the modulation order corresponding to the parameter index of each MIMO spatial layer, The bit rate parameter value determines the transport block size. A set of parameters corresponding to different MIMO spatial layers may be the same or different.

In a third aspect, an embodiment of the present application provides a method for determining a transmission block size, including: a first device acquiring a parameter index and a number of non-orthogonal multiple access NOMA multiplexing layers; and a first device according to the parameter index and a preset mapping Relationship to determine the modulation order, code rate, and spreading factor corresponding to the parameter index. The preset mapping relationship includes: at least one index, and a parameter value of a set of parameters associated with each index in the at least one index. The set of parameters includes: modulation order, code rate, and spreading factor. The first device determines a transmission block size for communication with the second device according to the number of NOMA multiplexing layers and a modulation order, a code rate, and a spreading factor corresponding to the parameter index.

An embodiment of the present invention provides a method for determining a transmission block size. A first device determines a modulation order, a code rate, and an extension corresponding to a parameter index by acquiring a parameter index and a number of NOMA multiplexing layers and combining a preset mapping relationship. factor. Then, a transmission block size for communication with the second device is determined according to a modulation order, a code rate, a spreading factor, and a number of non-orthogonal multiple access NOMA multiplexing layers. Compared with the prior art, the expansion factor does not require other signaling notifications, which can simplify signaling design and reduce signaling overhead.

In a possible design, the set of parameters further includes: spectral efficiency, and the preset mapping relationship includes at least two indexes, and there are multiple indexes associated with the same spectral efficiency value in the at least two indexes.

In a possible design, when the terminal uses multiple multiple-input multiple-output MIMO spatial layers for transmission, the first device determines the number of NOMA multiplexing layers and the modulation order, code rate, and expansion factor corresponding to the parameter index. The method for communicating with the second device includes: the first device according to the number of NOMA multiplexing layers corresponding to each MIMO spatial layer in the multiple MIMO spatial layers, and a group corresponding to a parameter index of each MIMO spatial layer The parameter value of the parameter determines the transport block size that is communicated with the second device.

In a fourth aspect, an embodiment of the present application provides a transmission method, including: the second device sends a parameter index to the first device, and the parameter index is used by the first device to determine a modulation order corresponding to the parameter index from a preset mapping relationship, Code rate, spreading factor, and number of non-orthogonal multiple access NOMA multiplexing layers; the preset mapping relationship includes at least one index, and a parameter value of a group of parameters associated with each index in the at least one index, and a group of parameters Including: modulation order, code rate, spreading factor, and number of NOMA multiplexing layers, the second device receives data sent by the first device according to a parameter value of a set of parameters corresponding to the parameter index.

In a possible design, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that the number of first devices communicating with the second device on the same time-frequency resource is greater than the first At a threshold, the parameter index is the index with the lowest number of corresponding NOMA multiplexing layers among the multiple indexes. When the number of first devices is greater than the first threshold, the lowest number of NOMA multiplexing layers is selected, so that the interference between the first devices can be reduced.

In a possible design, when the number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the same number of NOMA multiplexing layers is the lowest number of NOMA multiplexing layers corresponding to multiple parameter indexes, the parameter An index is an index with the largest corresponding expansion factor among multiple indexes. When the expansion factor is larger, the resources occupied by each expansion unit are more, the transmission reliability is improved, and the corresponding network coverage is enhanced.

In a possible design, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that the number of first devices communicating with the second device on the same time-frequency resource is less than the first When the threshold is two, the parameter index is the index with the highest number of corresponding NOMA multiplexing layers among the multiple indexes. When the number of first devices is less than the second threshold, selecting the highest number of NOMA multiplexing layers can improve the transmission efficiency of each first device.

In a possible design, when the number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the same number of NOMA multiplexing layers is the highest number of NOMA multiplexing layers corresponding to multiple parameter indexes, the parameter An index is an index with the largest corresponding expansion factor among multiple indexes. In this way, not only the transmission efficiency of each first device can be improved, but as the expansion factor is larger, the resources occupied by each expansion unit are more, the transmission reliability is improved, and the corresponding network coverage is enhanced.

In a fifth aspect, an embodiment of the present application provides a transmission method, including: the second device sends a parameter index and an expansion factor to the first device, and the parameter index is used by the first device to determine a modulation corresponding to the parameter index from a preset mapping relationship. Order, bit rate, and number of non-orthogonal multiple access NOMA multiplexing layers; the preset mapping relationship includes at least one index, and a parameter value of a group of parameters associated with each index in the at least one index, and a group of parameters Including: modulation order, code rate and number of NOMA multiplexing layers. The second device receives data sent by the first device according to a parameter value of a set of parameters corresponding to the expansion factor and the parameter index.

According to a sixth aspect, an embodiment of the present application provides a transmission method, including: a second device sends a parameter index and a number of non-orthogonal multiple access NOMA multiplexing layers to a first device, and the parameter index is used by the first device The mapping order determines the modulation order, code rate, and spreading factor corresponding to the parameter index. The preset mapping relationship includes at least one index, and a parameter value of a group of parameters associated with each index in the at least one index. A group of parameters Including: modulation order, code rate and spreading factor, the second device receives data sent by the first device according to the number of NOMA multiplexing layers and a parameter value of a set of parameters corresponding to the parameter index.

In a possible design, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that the number of first devices communicating with the second device on the same time-frequency resource is greater than the first At a threshold, the parameter index is the index with the lowest number of corresponding NOMA multiplexing layers among the multiple indexes.

In a possible design, when the number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the same number of NOMA multiplexing layers is the lowest number of NOMA multiplexing layers corresponding to multiple parameter indexes, the parameter An index is an index with the largest corresponding expansion factor among multiple indexes.

In a possible design, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that the number of first devices communicating with the second device on the same time-frequency resource is less than the first When the threshold is two, the parameter index is the index with the highest number of corresponding NOMA multiplexing layers among the multiple indexes.

In a possible design, when the number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the same number of NOMA multiplexing layers is the highest number of NOMA multiplexing layers corresponding to multiple parameter indexes, the parameter An index is an index with the largest corresponding expansion factor among multiple indexes.

In a seventh aspect, the present application provides a device for determining a transmission block size. The device for determining a transmission block size can implement the first aspect or the method in any possible implementation manner of the first aspect, and therefore can also implement the first aspect or Beneficial effects in any possible implementation of the first aspect. The apparatus for determining the transmission block size may be a first device, or may be an apparatus that can support the first device to implement the first aspect or the method in any possible implementation manner of the first aspect, such as a chip applied to the first device. . The apparatus for determining the size of a transmission block may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

In a seventh aspect, the apparatus for determining a transmission block size provided in an embodiment of the present application includes: an obtaining unit for obtaining a parameter index; and a determining unit for determining a modulation corresponding to the parameter index according to the parameter index and a preset mapping relationship. Order, code rate, spreading factor, and number of non-orthogonal multiple access NOMA multiplexing layers; the preset mapping relationship includes: at least one index, and a parameter value of a set of parameters associated with each index in at least one index A set of parameters includes: modulation order, code rate, spreading factor, and number of NOMA multiplexing layers; a determination unit, which is further used to determine the modulation order, code rate, spreading factor, and number of NOMA multiplexing layers corresponding to the index The transport block size used to communicate with the second device.

In a possible design, when the terminal uses multiple multiple-input multiple-output MIMO spatial layers for transmission, the determining unit is further specifically configured to: according to a parameter index corresponding to each MIMO spatial layer in the multiple MIMO spatial layers The parameter value of the NOMA multiplex layer, the parameter value of the modulation order, the parameter value of the code rate, and the parameter value of the expansion factor determine the transmission block size for communication with the second device, where a set of parameters corresponding to different MIMO spatial layers different.

In a possible design, an embodiment of the present application further provides a device for determining a transmission block size. The device for determining a transmission block size may be a first device or a chip applied in the first device, and the transmission block size is determined. The device includes: a processor and a communication interface, wherein the communication interface is configured to support the device for determining a transmission block size to perform the determination of the transmission block size described in any one of the first aspect to the first possible implementation manner of the first aspect. The device side performs the steps of receiving / sending data / data. The processor is configured to support the apparatus for determining a transmission block size to perform the steps of performing message / data processing on the apparatus side for determining a transport block size described in any one of the first aspect to the first possible implementation manner of the first aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the first aspect to the first aspect, which is not repeatedly described in the embodiment of the present application.

Optionally, the communication interface and the processor of the device for determining the transmission block size are coupled to each other.

Optionally, the apparatus for determining the size of a transmission block may further include a memory for storing code and data, and the processor, the communication interface, and the memory are coupled to each other.

In an eighth aspect, the present application provides a device for determining a transmission block size. The device for determining a transmission block size can implement the second aspect or the method in any possible implementation manner of the second aspect, and therefore can also implement the second aspect or Beneficial effects in any possible implementation of the second aspect. The device for determining the transmission block size may be a first device, or may be a device that can support the first device to implement the second aspect or the method in any possible implementation manner of the second aspect, such as a chip applied to the first device. . The apparatus for determining the size of a transmission block may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

In an eighth aspect, an apparatus for determining a transmission block size provided in an embodiment of the present application includes: an obtaining unit for obtaining a parameter index and an expansion factor; and a determining unit for determining a relationship between the parameter index and a preset mapping relationship. The modulation order, code rate, and number of non-orthogonal multiple access NOMA multiplexing layers corresponding to the parameter index; the preset mapping relationship includes: at least one index, and a set of parameters associated with each index in at least one index Parameter value, a set of parameters includes: modulation order, code rate, and number of NOMA multiplexing layers; a determining unit, which is further configured to determine according to the expansion factor and modulation order, code rate, and number of NOMA multiplexing layers corresponding to the parameter index The transport block size used to communicate with the second device.

In a possible design, the set of parameters further includes: spectral efficiency, and the preset mapping relationship includes at least two indexes, and a set of parameters associated with multiple indexes in the at least two indexes have the same spectral efficiency.

In a possible design, when the terminal uses multiple multiple-input multiple-output MIMO spatial layers for transmission, the determining unit is further specifically configured to: according to an expansion factor corresponding to each of the multiple MIMO spatial layers, and The parameter value of the modulation order and the parameter value of the parameter index corresponding to each MIMO space layer determine the transmission block size. Among them, a set of parameters corresponding to different MIMO space layers is different.

In a possible design, an embodiment of the present application further provides a device for determining a transmission block size. The device for determining a transmission block size may be a first device or a chip applied in the first device, and the transmission block size is determined. The apparatus includes: a processor and a communication interface, wherein the communication interface is configured to support the device for determining a transmission block size to perform the determination of the transmission block size described in any one of the second aspect to the second possible implementation manner of the second aspect. The device side performs the steps of receiving / sending data / data. The processor is configured to support the apparatus for determining the size of the transport block to perform the steps of performing message / data processing on the side of the apparatus for determining the size of the transport block as described in any one of the possible implementation manners of the second aspect to the second aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the second aspect to the second aspect, which is not repeatedly described in the embodiment of the present application.

In a ninth aspect, the present application provides a device for determining a transmission block size. The device for determining a transmission block size can implement the third aspect or the method in any possible implementation manner of the third aspect, and therefore can also implement the third aspect or The beneficial effects in any possible implementation manner of the third aspect. The apparatus for determining the size of the transmission block may be a first device or an apparatus that can support the first device to implement the third aspect or the method in any possible implementation manner of the third aspect, such as a chip applied to the first device . The apparatus for determining the size of a transmission block may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

An apparatus for determining a transmission block size provided in a ninth aspect includes: an obtaining unit for obtaining a parameter index and a number of non-orthogonal multiple access NOMA multiplexing layers; a determining unit for obtaining a parameter index and a preset The mapping relationship determines the modulation order, code rate, and spreading factor corresponding to the parameter index. The preset mapping relationship includes: at least one index, and a parameter value of a group of parameters associated with each index in the at least one index. The parameters include: a modulation order, a code rate, and a spreading factor; and a determining unit, which is further configured to determine, based on the number of NOMA multiplexing layers and a modulation order, a code rate, and a spreading factor corresponding to the parameter index, a communication order used to communicate with the second device Transmission block size.

In a possible design, the set of parameters further includes: spectral efficiency, and the preset mapping relationship includes at least two indexes, and at least two indexes have multiple indexes associated with the same spectral efficiency value.

In a possible design, when the terminal uses multiple MIMO spatial layers for transmission, the determining unit is further specifically configured to: according to the NOMA multiplex corresponding to each MIMO spatial layer in the multiple MIMO spatial layers The number of layers and the parameter value of a set of parameters corresponding to the parameter index of each MIMO spatial layer determine the transmission block size for communication with the second device.

In a possible design, an embodiment of the present application further provides a device for determining a transmission block size. The device for determining a transmission block size may be a first device or a chip applied in the first device, and the transmission block size is determined. The device includes: a processor and a communication interface, where the communication interface is configured to support the device for determining a transmission block size to perform the determination of the transmission block size described in any one of the third aspect to the third possible implementation manner of the third aspect. The device side performs the steps of receiving / sending data / data. The processor is configured to support the apparatus for determining the size of the transport block to perform the steps of performing message / data processing on the side of the apparatus for determining the size of the transport block as described in any one of the possible implementation manners of the third aspect to the third aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the third aspect to the third aspect, which is not repeatedly described in the embodiment of the present application.

In a tenth aspect, the present application provides a transmission device that can implement the fourth aspect or the method in any possible implementation manner of the fourth aspect, and therefore can also implement the fourth aspect or any possible implementation manner of the fourth aspect. Beneficial effects. The transmission device may be a second device, or may be a device that can support the second device to implement the fourth aspect or the method in any possible implementation manner of the fourth aspect, such as a chip applied to the second device. The transmission device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

A transmission device provided by a tenth aspect includes a sending unit configured to send a parameter index to a first device, where the parameter index is used by the first device to determine a modulation order and a code rate corresponding to the parameter index from a preset mapping relationship. , The expansion factor, and the number of non-orthogonal multiple access NOMA multiplexing layers; the preset mapping relationship includes at least one index and a parameter value of a set of parameters associated with each index in the at least one index. The set of parameters includes: A modulation order, a code rate, a spreading factor, and a number of NOMA multiplexing layers; a receiving unit, configured to receive data sent by the first device according to a modulation order, a code rate, a spreading factor, and a number of NOMA multiplexing layers corresponding to the parameter index.

In a possible design, when a set of parameters associated with multiple indexes in the preset mapping relationship has multiple indexes associated with the same spectral efficiency value, and the second device determines that it is on the same time-frequency resource as the second device When the number of the first communication devices is greater than the first threshold, the parameter index is an index with the lowest number of corresponding NOMA multiplexing layers among the multiple indexes. When the number of first devices is greater than the first threshold, the lowest number of NOMA multiplexing layers is selected, so that the interference between the first devices can be reduced.

In a possible design, an embodiment of the present application further provides a transmission device. The transmission device may be a second device or a chip applied to the second device. The transmission device includes a processor and a communication interface. The communication interface is configured to support the transmission device to perform the steps of receiving / sending data / data on the transmission device side as described in any one of the possible implementation manners of the fourth aspect to the fourth aspect. The processor is configured to support the transmission device to execute the steps of performing message / data processing on the transmission device side described in any one of the possible implementation manners of the fourth aspect to the fourth aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the fourth aspect to the fourth aspect, which is not repeatedly described in the embodiment of the present application.

Optionally, the communication interface of the transmission device and the processor are coupled to each other.

Optionally, the transmission device may further include a memory for storing code and data, and the processor, the communication interface, and the memory are coupled to each other.

According to an eleventh aspect, an embodiment of the present application provides a transmission device, which can implement the fifth aspect or the method in any possible implementation manner of the fifth aspect, and therefore can also implement the fifth aspect or any possible implementation of the fifth aspect. Beneficial effects in the implementation. The transmission device may be a second device, or may be a device that can support the second device to implement the fifth aspect or the method in any possible implementation manner of the fifth aspect, such as a chip applied to the second device. The transmission device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

According to an eleventh aspect, a transmission apparatus provided by an embodiment of the present application includes: a sending unit, configured to send a parameter index and an expansion factor to a first device, and the parameter index is used by the first device to determine a parameter index from a preset mapping relationship. The corresponding modulation order, bit rate, and number of non-orthogonal multiple access NOMA multiplexing layers; the preset mapping relationship includes at least one index and a parameter value of a set of parameters associated with each index in the at least one index, A set of parameters includes: modulation order, code rate, and number of NOMA multiplexing layers; a receiving unit, configured to receive data sent by the first device according to the expansion factor and the modulation order, code rate, and number of NOMA multiplexing layers corresponding to the parameter index .

In a possible design, an embodiment of the present application further provides a transmission device. The transmission device may be a second device or a chip applied to the second device. The transmission device includes a processor and a communication interface. The communication interface is used to support the transmission device to perform the steps of receiving / sending data / data on the transmission device side described in any one of the possible implementation manners of the fifth aspect to the fifth aspect. The processor is configured to support the transmission device to execute the steps of performing message / data processing on the transmission device side described in any one of the possible implementation manners of the fifth aspect to the fifth aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the fifth aspect to the fifth aspect, which is not repeatedly described in the embodiment of the present application.

In a twelfth aspect, an embodiment of the present application provides a transmission device, which can implement the sixth aspect or the method in any possible implementation manner of the sixth aspect, and therefore can also implement the sixth aspect or any possible implementation of the sixth aspect. Beneficial effects in the implementation. The transmission device may be a second device, or may be a device that can support the second device to implement the sixth aspect or the method in any possible implementation manner of the sixth aspect, such as a chip applied to the second device. The transmission device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

A transmission device provided in a twelfth aspect of the embodiments of the present application includes: a sending unit, configured to send a parameter index and a number of non-orthogonal multiple access NOMA multiplexing layers to a first device, and the parameter index is used for the first device Determine the modulation order, code rate, and spreading factor corresponding to the parameter index from a preset mapping relationship, where the preset mapping relationship includes at least one index and a parameter value of a group of parameters associated with each index in the at least one index, A set of parameters includes: modulation order, code rate, and spreading factor; and a receiving unit, configured to receive data sent by the first device according to the number of NOMA multiplexing layers and the modulation order, code rate, and spreading factor corresponding to the parameter index.

In a possible design, a set of parameters further includes: spectral efficiency, the preset mapping relationship includes at least two indexes, and at least two indexes have multiple indexes associated with the same spectral efficiency value.

In a possible design, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that the number of first devices communicating with the second device on the same time-frequency resource is greater than the first At the threshold, the parameter index is the index with the lowest number of corresponding NOMA multiplexing layers among the multiple indexes.

In a possible design, when the number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the same number of NOMA multiplexing layers is the lowest number of NOMA multiplexing layers corresponding to multiple parameter indexes, the parameter index The index with the largest expansion factor among multiple indexes.

In a possible design, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that the number of first devices communicating with the second device on the same time-frequency resource is less than the second At the threshold, the parameter index is the index with the highest number of corresponding NOMA multiplexing layers among the multiple indexes.

In a possible design, when the number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the same number of NOMA multiplexing layers is the highest number of NOMA multiplexing layers corresponding to multiple parameter indexes, the parameter index The index with the largest expansion factor among multiple indexes.

In a possible design, an embodiment of the present application further provides a transmission device. The transmission device may be a second device or a chip applied to the second device. The transmission device includes a processor and a communication interface. The communication interface is used to support the transmission device to perform the steps of receiving / sending data / data on the transmission device side described in any one of the possible implementation manners of the sixth aspect to the sixth aspect. The processor is configured to support the transmission device to perform the steps of performing message / data processing on the transmission device side described in any one of the possible implementation manners of the sixth aspect to the sixth aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the sixth aspect to the sixth aspect, which is not repeatedly described in the embodiment of the present application.

In a thirteenth aspect, an embodiment of the present invention provides a transmission method, including: a second device sends a parameter index to a first device, and the parameter index is used by the first device to determine a modulation order corresponding to the parameter index from a preset mapping relationship. , Code rate, spreading factor, and number of non-orthogonal multiple access NOMA multiplexing layers; wherein the preset mapping relationship includes at least one index, and a parameter value of a set of parameters associated with each index in the at least one index, a set of Parameters include: modulation order, code rate, spreading factor, and number of NOMA multiplexing layers; the second device uses the modulation order, code rate, spreading factor, and non-orthogonal multiple access NOMA multiplexing layer number corresponding to the parameter index. The first device sends data.

For various possible designs of the thirteenth aspect, reference may be made to the description in the fourth aspect, which is not repeatedly described in the embodiment of the present application.

In a fourteenth aspect, an embodiment of the present invention provides a transmission method, including: a second device sends a parameter index and an expansion factor to a first device, and the parameter index is used by the first device to determine a parameter index corresponding to the parameter index from a preset mapping relationship. Modulation order, code rate, and number of non-orthogonal multiple access NOMA multiplexing layers; wherein the preset mapping relationship includes at least one index, and a parameter value of a group of parameters associated with each index in the at least one index, a group Parameters include: modulation order, code rate, and number of NOMA multiplexing layers; the second device sends the first device to the first device according to the modulation order, code rate, and non-orthogonal multiple access NOMA multiplexing layers corresponding to the expansion factor and parameter index. send data.

For various possible designs of the fourteenth aspect, reference may be made to the description in the fifth aspect, which is not repeatedly described in the embodiment of the present application.

In a fifteenth aspect, an embodiment of the present invention provides a transmission method, including: a second device sends a parameter index and a number of non-orthogonal multiple access NOMA multiplexing layers to a first device, and the parameter index is used by the first device It is assumed that a modulation order, a code rate, and an expansion factor corresponding to the parameter index are determined in the mapping relationship. The preset mapping relationship includes at least one index, and a parameter value of a group of parameters associated with each index in the at least one index. The parameters include: modulation order, code rate and spreading factor; the second device sends data to the first device according to the modulation order, code rate and spreading factor corresponding to the number of NOMA multiplexing layers and the parameter index.

For various possible designs of the fifteenth aspect, reference may be made to the description in the sixth aspect, which is not repeatedly described in the embodiment of the present application.

In a sixteenth aspect, an embodiment of the present application provides a transmission device, which can implement the thirteenth aspect or a method in any possible implementation manner of the thirteenth aspect, and therefore can also implement the thirteenth aspect or the tenth aspect. Beneficial effects in any of the three possible implementations. The transmission device may be a second device, and may also be a device that can support the second device to implement the thirteenth aspect or the method in any possible implementation manner of the thirteenth aspect, such as a chip applied to the second device. The transmission device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

A transmission device provided in a sixteenth aspect of the embodiments of the present application includes: a sending unit, configured to send a parameter index to a first device, and the parameter index is used by the first device to determine a modulation corresponding to the parameter index from a preset mapping relationship. Order, code rate, spreading factor, and number of non-orthogonal multiple access NOMA multiplexing layers; wherein the preset mapping relationship includes at least one index and a parameter value of a set of parameters associated with each index in the at least one index, A set of parameters includes: modulation order, code rate, spreading factor, and number of NOMA multiplexing layers; the sending unit is also used to modulate order, code rate, expansion factor, and non-orthogonal multiple access to NOMA according to the parameter index The number of multiplexed layers sends data to the first device.

For various possible designs of the sixteenth aspect, reference may be made to the description in the fourth aspect, which is not repeatedly described in the embodiment of the present application.

In a seventeenth aspect, an embodiment of the present application provides a transmission device, which can implement the fourteenth aspect or the method in any possible implementation manner of the fourteenth aspect, and therefore can also implement the fourteenth aspect or the tenth aspect. Beneficial effects in any of the four possible implementations. The transmission device may be a second device, and may also be a device that can support the second device to implement the fourteenth aspect or the method in any possible implementation manner of the fourteenth aspect, such as a chip applied to the second device. The transmission device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

A transmission device provided in a seventeenth aspect of the embodiments of the present application includes: a sending unit, configured to send a parameter index and an expansion factor to a first device, and the parameter index is used by the first device to determine a parameter index from a preset mapping relationship. The corresponding modulation order, bit rate, and number of non-orthogonal multiple access NOMA multiplexing layers; the preset mapping relationship includes at least one index and a parameter value of a set of parameters associated with each index in the at least one index, A set of parameters includes: modulation order, code rate, and number of NOMA multiplexing layers; and a sending unit for modulating order, code rate, and non-orthogonal multiple access NOMA multiplexing layers according to the expansion factor and parameter index Send data to the first device.

For various possible designs of the seventeenth aspect, reference may be made to the description in the fifth aspect, which is not repeatedly described in the embodiment of the present application.

In an eighteenth aspect, an embodiment of the present application provides a transmission device that can implement the fifteenth aspect or a method in any possible implementation manner of the fifteenth aspect, and therefore can also implement the fifteenth aspect or the tenth aspect. Beneficial effects in any of the five possible implementations. The transmission device may be a second device, or a device that can support the second device to implement the fifteenth aspect or the method in any possible implementation manner of the fifteenth aspect, such as a chip applied to the second device. The transmission device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

In an eighteenth aspect, an embodiment of the present invention provides a transmission apparatus, including: a sending unit, configured to send a parameter index and a number of non-orthogonal multiple access NOMA multiplexing layers to a first device, and the parameter index is used for the first device Determine the modulation order, code rate, and spreading factor corresponding to the parameter index from a preset mapping relationship, where the preset mapping relationship includes at least one index and a parameter value of a group of parameters associated with each index in the at least one index, A set of parameters includes: modulation order, code rate, and spreading factor; and the sending unit is further configured to send data to the first device according to the modulation order, code rate, and spreading factor corresponding to the number of NOMA multiplexing layers and the parameter index.

For various possible designs of the eighteenth aspect, reference may be made to the description in the sixth aspect, which is not repeatedly described in the embodiment of the present application.

In a nineteenth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer programs or instructions. When the computer programs or instructions are run on the computer, the computer executes the first aspect and the first aspect. The method described in any one of the possible design aspects of one aspect.

In a twentieth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or an instruction. When the computer program or the instruction runs on the computer, the computer executes the second aspect and the first aspect. The method described in either of the two possible design approaches.

In a twenty-first aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer programs or instructions. When the computer programs or instructions run on the computer, the computer executes the third aspect and The method described in any one of the possible designs of the third aspect.

In a twenty-second aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer programs or instructions. When the computer programs or instructions are run on the computer, the computer executes the fourth aspect and The method described in any possible design manner of the fourth aspect.

In a twenty-third aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or an instruction. When the computer program or the instruction is run on the computer, the computer executes the fifth aspect and The method described in any one of the possible designs of the fifth aspect.

In a twenty-fourth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or an instruction. When the computer program or the instruction is run on the computer, the computer executes the sixth aspect and The method described in any one possible design manner of the sixth aspect.

In a twenty-fifth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or an instruction. When the computer program or the instruction runs on the computer, the computer executes the thirteenth aspect. And the method described in any one of the possible designs of the thirteenth aspect.

In a twenty-sixth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or an instruction. When the computer program or the instruction is run on the computer, the computer executes the fourteenth aspect. And the method described in any one of the fourteenth aspects of the possible design.

In a twenty-seventh aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or an instruction. When the computer program or the instruction runs on the computer, the computer executes the fifteenth aspect. And the method described in any of the possible design ways of the fifteenth aspect.

In a twenty-eighth aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the first aspect and various possible designs of the first aspect.

In a twenty-ninth aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the second aspect and various possible designs of the second aspect.

In a thirtieth aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the third aspect and various possible designs of the third aspect.

In a thirty-first aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the fourth aspect and various possible designs of the fourth aspect.

In a thirty-second aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the fifth aspect and various possible designs of the fifth aspect.

In a thirty-third aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the sixth aspect and various possible designs of the sixth aspect.

In a thirty-fourth aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the thirteenth aspect and various possible designs of the thirteenth aspect.

In a thirty-fifth aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the fourteenth aspect and various possible designs of the fourteenth aspect.

In a thirty-sixth aspect, the present application provides a computer program product including instructions that, when run on a computer, causes the computer to perform one or more of the fifteenth aspect and various possible designs of the fifteenth aspect.

In a thirty-seventh aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the first aspect and the first aspect. According to the method described in any one possible design aspect of the aspect, the interface circuit is used to communicate with other modules other than the chip.

In a thirty-eighth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the second aspect and the second aspect. According to the method described in any one possible design aspect of the aspect, the interface circuit is used to communicate with other modules other than the chip.

In a thirty-ninth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the third aspect and the third aspect. According to the method described in any one possible design aspect of the aspect, the interface circuit is used to communicate with other modules other than the chip.

In a fortieth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the fourth aspect and the fourth aspect The method described in any one of the possible design methods, the interface circuit is used to communicate with other modules than the chip.

In a forty-first aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the fifth aspect and the fifth aspect. According to the method described in any one possible design aspect of the aspect, the interface circuit is used to communicate with other modules other than the chip.

In a forty-second aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the sixth aspect and the sixth aspect. According to the method described in any one possible design aspect of the aspect, the interface circuit is used to communicate with other modules other than the chip.

In a forty-third aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor. The processor is configured to run a computer program or instruction to implement the thirteenth aspect and the first aspect. In the method described in any one of the possible designs of the thirteenth aspect, the interface circuit is used to communicate with other modules other than the chip.

In a forty-fourth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the fourteenth aspect and the first aspect. In the method described in any one of the fourteen aspects, the interface circuit is used to communicate with other modules than the chip.

In a forty-fifth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the fifteenth aspect and the first In the method described in any one of the possible design modes of the fifteenth aspect, the interface circuit is used to communicate with other modules other than the chip.

Optionally, the chip described above in this application may further include at least one memory, and the at least one memory stores instructions or a computer program.

Forty-sixth aspect, an embodiment of the present application provides a communication system, where the communication system includes: a device for determining a transmission block size described in any one of the seventh aspect and the seventh possible design, and the tenth aspect and the first aspect. Any of the ten possible designs describes the transmission device.

Forty-seventh aspect, an embodiment of the present application provides a communication system, the communication system includes: an apparatus for determining a transmission block size described in any one of the eighth aspect and the eighth aspect, and the eleventh aspect and The transmission device described in any one possible design of the eleventh aspect.

Forty-eighth aspect, an embodiment of the present application provides a communication system, the communication system includes: a device for determining a transmission block size described in any one of the ninth aspect and the ninth aspect, and the twelfth aspect and Any of the possible designs of the twelfth aspect describes the transmission device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a first schematic structural diagram of a communication system according to an embodiment of the present invention; FIG.

FIG. 2 is a second schematic structural diagram of a communication system according to an embodiment of the present invention; FIG.

3 is a third structural schematic diagram of a communication system according to an embodiment of the present invention;

FIG. 4 is a first schematic structural diagram of a communication system according to an embodiment of the present invention; FIG.

FIG. 5 is a first schematic structural diagram of a base station according to an embodiment of the present invention; FIG.

FIG. 6 is a second schematic structural diagram of a base station according to an embodiment of the present invention; FIG.

FIG. 7 is an example of sparse code division multiple access provided by an embodiment of the present invention;

FIG. 8 is an example of a MUSA extension sequence provided by an embodiment of the present invention; FIG.

FIG. 9 is a first schematic flowchart of a communication method according to an embodiment of the present invention; FIG.

10 is a second schematic flowchart of a communication method according to an embodiment of the present invention;

FIG. 11 is a first schematic flowchart of processing inside a terminal according to an embodiment of the present invention; FIG.

FIG. 12 is a second schematic flowchart of processing inside a terminal according to an embodiment of the present invention; FIG.

13 is a schematic diagram of a symbol extension method based on an extended sequence;

14 is a schematic diagram of a sign extension method based on an extension matrix;

15 is a schematic diagram of a symbol extension method based on an extended sequence set;

16 is a third flowchart of a communication method according to an embodiment of the present invention;

FIG. 17 is a fourth flowchart of a communication method according to an embodiment of the present invention; FIG.

FIG. 18 is a third schematic flowchart of processing inside a terminal according to an embodiment of the present invention; FIG.

FIG. 19 is a fifth flowchart of a communication method according to an embodiment of the present invention; FIG.

20 is a sixth flowchart of a communication method according to an embodiment of the present invention;

FIG. 21 is a schematic diagram of another internal processing flow of a terminal according to an embodiment of the present invention; FIG.

22 is a first schematic flowchart of a method for determining downlink transmission and parameters according to an embodiment of the present invention;

FIG. 23 is a second schematic flowchart of a downlink transmission and parameter determination method according to an embodiment of the present invention; FIG.

FIG. 24 is a third schematic flowchart of a downlink transmission and parameter determination method according to an embodiment of the present invention; FIG.

25 is a first schematic diagram of an apparatus for determining a transmission block size according to an embodiment of the present invention;

26 is a second schematic diagram of an apparatus for determining a transmission block size according to an embodiment of the present invention;

27 is a third schematic diagram of an apparatus for determining a transmission block size according to an embodiment of the present invention;

FIG. 28 is a first schematic diagram of a transmission device according to an embodiment of the present invention; FIG.

FIG. 29 is a second schematic diagram of a transmission device according to an embodiment of the present invention; FIG.

FIG. 30 is a third schematic diagram of a transmission device according to an embodiment of the present invention; FIG.

FIG. 31 is a schematic structural diagram of a chip according to an embodiment of the present invention.

detailed description

It should be noted that, in the embodiments of the present application, words such as “exemplary” or “for example” are used as examples, illustrations, or descriptions. Any embodiment or design described as “exemplary” or “for example” in the embodiments of the present application should not be construed as more preferred or more advantageous than other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concept in a concrete manner.

The network architecture and service scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that with the network The evolution of the architecture and the emergence of new business scenarios. The technical solutions provided in the embodiments of the present application are also applicable to similar technical issues.

In the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship between associated objects, and indicates that there can be three kinds of relationships. For example, A and / or B may indicate a case where A exists alone, A and B exist simultaneously, and B exists alone. Among them, A and B can be singular or plural. The character "/" generally indicates that the related objects are an "or" relationship. "At least one or more of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one (a) of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple . In addition, in order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as “first” and “second” are used to distinguish the same or similar items having substantially the same functions and functions. Those skilled in the art can understand that the words "first", "second" and the like do not limit the number and execution order, and the words "first" and "second" are not necessarily different.

The technical solutions in the embodiments of the present application can be applied to various communication systems, such as: code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (frequency division multiple access) access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (single carrier FDMA, SC-FDMA), and other systems. The term "system" can be used interchangeably with "network." The CDMA system can implement wireless technologies such as universal wireless terrestrial access (UTRA) and CDMA2000. UTRA may include Wideband CDMA (WCDMA) technology and other CDMA variant technologies. CDMA2000 can cover the Interim Standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards. The TDMA system can implement wireless technologies such as the Global System for Mobile Communication (GSM). OFDMA system can implement such as evolved universal wireless land access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies. UTRA and E-UTRA are UMTS and UMTS evolved versions. 3GPP is a new version of UMTS using E-UTRA in long term evolution (LTE) and various versions based on LTE evolution. The 5G communication system and New Radio (NR) are the next-generation communication systems under study. In addition, the communication system may also be applicable to future-oriented communication technologies, and both are applicable to the technical solutions provided in the embodiments of the present application.

The system architecture and service scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those of ordinary skill in the art may know that with the network The evolution of the architecture and the emergence of new business scenarios. The technical solutions provided in the embodiments of the present application are also applicable to similar technical issues. In the embodiment of the present application, the method provided is applied to an NR system or a 5G network as an example for description. However, it should be noted that the method provided in the embodiment of the present application can also be applied to other networks, for example, it can be applied to an evolved packet system (EPS) network (that is, commonly referred to as the fourth generation, 4G) network). Correspondingly, when the method provided in the embodiment of the present application is applied to an EPS network, the network node executing the method provided in the embodiment of the present application may be replaced with a network node in the EPS network.

When transmitting in the NOMA mode, an example of an MCS table is shown in Table 2. Each MCS index corresponds to a combination of a modulation order, a number of NOMA multiplexing layers (or non-orthogonal layers), and a TBS index. Based on Table 2, the terminal determines the corresponding TBS index according to the MCS index, and then determines the transmission block size corresponding to the TBS index according to the TBS index. Of course, in the actual process, there may be a TBS index indicating a TBS table. The TBS table includes one or more TBSs and the number of non-orthogonal layers corresponding to each TBS in the one or more TBSs. Therefore, the terminal may also determine the number of non-orthogonal layers, and then use the TBS index and the number of non-orthogonal layers to determine the transmission block size for communication with the second device in the TBS table.

Table 2 MCS table used in NOMA technology

MCS索引(I _MCS) MCS Index (I _MCS )	调制阶数(Q _m) Modulation order (Q _m )	非正交层数(#Layer)Non-orthogonal layers (#Layer)	TBS索引(I _TBS) TBS Index (I _TBS )
00	44	11	00
11	44	22	11
22	44	44	22
33	44	66	33
44	88	22	44
55	88	44	55

When transmitting in the NOMA mode, the TBS size is determined by indicating the TBS index and the number of non-orthogonal layers. The existing MCS scheme in NR uses the modulation order and code rate to determine the TBS size. Therefore, the MCS table used in NOMA technology and the NR The MCS forms used are not compatible. Based on this, in the embodiment of the present invention, the terminal obtains a parameter index by obtaining a parameter index, and then obtains a parameter value of a set of parameters corresponding to the parameter index according to the parameter index. Since the set of parameters includes a modulation order, a non-orthogonal layer number, a code rate, Parameters such as spreading factor can make the MCS table used in NOMA technology compatible with the MCS table used in NR, and no additional signaling is required because of parameters such as modulation order, non-orthogonal layers, code rate, and expansion factor. To the terminal, so signaling overhead can be reduced.

As shown in FIG. 1, FIG. 1 shows a schematic diagram of a communication system provided by an embodiment of the present application. The communication system includes: a network device 101, and one or more terminals that communicate with the network device 101 (only in FIG. 1) Three terminals are shown, for example, terminal 102, terminal 103, and terminal 104). Among them, one or more terminals and network equipment constitute a single-cell communication system, and one or more terminals can send uplink data to the network equipment 101 on the same time-frequency resource.

As shown in FIG. 2, FIG. 2 shows a schematic diagram of another communication system according to an embodiment of the present application. The communication system includes: a network device 101, a network device 105, and a plurality of communication devices with the network device 102 and the network device 105. Terminals (only two are shown in FIG. 2, for example, terminal 102 and terminal 103). The network device 101, the network device 105, and multiple terminals form a multi-cell communication system. The network device 101 and the network device 105 can send downlink data to the terminal 102 or the terminal 103 on the same time-frequency resource.

As shown in FIG. 3, FIG. 3 shows a schematic diagram of still another communication system according to an embodiment of the present application. The communication system includes three or more terminals. (Only three are shown in FIG. 3, for example, the terminal 102, the terminal 103, and the terminal 106). Among them, three or more terminals constitute a device-to-device (D2D) communication system, and the terminal 102 and the terminal 103 can send data to the terminal 106 on the same time-frequency resource.

As shown in FIG. 4, FIG. 4 shows a schematic diagram of still another communication system provided by an embodiment of the present application. The communication system includes: a network device 101 and two or more terminals (only shown in FIG. 4) Two terminals, for example, terminal 102 and terminal 103), where the network device 101 and two or more terminals constitute a single-cell communication system. The network device 101 and one of the two or more terminals may send data to the remaining terminals of the two or more terminals on the same time-frequency resource. For example, the network device 101 and the terminal 102 may send data to the terminal 103 on the same time-frequency resource.

It can be understood that the communication system illustrated in FIG. 1 to FIG. 4 in the embodiment of the present application may further include other network elements, which are not shown in FIGS. 1 to 4. The embodiments of the present application do not limit the number of terminals and network devices included in the communication system.

The terminal in the embodiment of the present application is an entity for transmitting or receiving signals, and may also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a remote station, a remote terminal, Mobile device, user terminal, wireless communication device, user agent or user device. The terminal can also be a station (ST) in a wireless local area network (WLAN), which can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, or a wireless local loop. loop (WLL) stations, personal digital processing (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices (also known as wearables Smart device). The terminal may also be a terminal in a next generation communication system, for example, a terminal in 5G or a terminal in a future evolved public land mobile network (PLMN), a terminal in a new wireless (NR) communication system Terminal, etc.

As an example, in the embodiment of the present invention, the terminal may also be a wearable device. Wearable devices can also be referred to as wearable smart devices, which are the general name for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a device that is worn directly on the body or is integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also powerful functions through software support, data interaction, and cloud interaction. Broad-spectrum wearable smart devices include full-featured, large-sized, full or partial functions that do not rely on smart phones, such as smart watches or smart glasses, and only focus on certain types of application functions, and need to cooperate with other devices such as smart phones Use, such as smart bracelets, smart jewelry, etc. for physical signs monitoring.

A network device is an entity that can be used with a terminal to transmit or receive signals. For example, it can be an access point (AP) in a WLAN, a global system for mobile communication (GSM), or a base station (base station) in a code division multiple access (CDMA) (BTS), or a base station (NodeB, NB) in wideband code division multiple access (WCDMA), or an evolved base station (evolved node in long term evolution (LTE)) B, eNB or eNodeB), or a relay station or access point, or an in-vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network.

In addition, in the embodiment of the present invention, a network device provides services to a cell, and a terminal communicates with the network device through a transmission resource (for example, a time domain resource, or a frequency domain resource, or a time-frequency resource) used by the cell. The cell may be a cell corresponding to a network device (for example, a base station). The cell may belong to a macro base station or a small cell. The small cell here may include: a metro cell, a micro cell ( micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.

Since the future access network can be implemented using a cloud radio access network (C-RAN) architecture, one possible way is to divide the protocol stack architecture and functions of the traditional base station into two parts, one part is called centralized Central unit (CU), another part is called distributed unit (DU), and the actual deployment of CU and DU is more flexible. For example, the CU parts of multiple base stations are integrated to form a larger function. entity. As shown in FIG. 5, it is a schematic diagram of a network architecture according to an embodiment of the present application. As shown in FIG. 5, the network architecture includes a core network (CN) device and an access network (taking a radio access network (RAN) as an example) device. The RAN device includes a baseband device and a radio frequency device. The baseband device can be implemented by one node or multiple nodes. The radio frequency device can be implemented independently from the baseband device remotely, can also be integrated into the baseband device, or part of the remote part Integrated in the baseband device. For example, in an LTE communication system, a RAN device (eNB) includes a baseband device and a radio frequency device, where the radio frequency device can be remotely arranged relative to the baseband device (for example, a radio remote unit (RRU) is relative to the baseband processing unit ( building base unit (BBU)), RAN equipment is implemented by a node, which is used to implement radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP), radio link control (radio link control (RLC)), media access control (medium access control (MAC)) and other protocol layer functions. As another example, in an evolved structure, the baseband device may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs may be centrally controlled by one CU. As shown in Figure 5, the CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the protocol layer and above in the packet data convergence layer are set in the CU and the protocol layers below PDCP, such as radio link control , RLC) and media access control layer functions are set in the DU.

This division of the protocol layer is only an example. It can also be divided at other protocol layers, for example, at the RLC layer. The functions of the RLC layer and above are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU. Alternatively, it is divided in a certain protocol layer, for example, setting some functions of the RLC layer and functions of the protocol layer above the RLC layer in the CU, and setting the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer in the DU. In addition, it can also be divided in other ways, such as by delay, and the functions that need to meet the delay requirements in processing time are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU.

In addition, the radio frequency device can be remote, not placed in the DU, or integrated in the DU, or part of the remote can be integrated in the DU, without any restrictions here.

In addition, please continue to refer to FIG. 6. Compared to the architecture shown in FIG. 5, the control plane (CP) and the user plane (UP) of the CU can also be separated and separated into different entities for control. CU entity (CU-CP entity) and CU entity (CU-UP entity).

In the above network architecture, data generated by the CU can be sent to the terminal through the DU, or data generated by the terminal can be sent to the CU through the DU. The DU can pass the protocol layer to the terminal or the CU without parsing the data. For example, the data at the RRC or PDCP layer will eventually be processed as data at the physical layer (PHY) and sent to the terminal, or the received data at the PHY layer will be transformed. Under this architecture, the RRC or PDCP layer data can also be considered to be sent by the DU.

In the above embodiment, the CU is divided into network devices in the RAN. In addition, the CU may also be divided into network devices in the CN, which is not limited herein.

The devices in the following embodiments of the present application may be located in a terminal or a network device according to the functions they implement. When the above CU-DU structure is adopted, the network device may be a CU node, or a DU node, or a RAN device including the functions of the CU node and the DU node.

A common NOMA scheme is that the transmitted signals of the terminals are superimposed in the power domain, and the receiving side uses an interference cancellation algorithm to eliminate interference between multiple terminals. In addition, the industry has also proposed a variety of NOMA schemes in which the transmitted signals are superimposed in the code domain. For example, sparse code division multiple access (Sparse Code Multiple Access, SCMA) distinguishes terminals by different sparse codes, and uses the sparseness of sparse codes to reduce interference between terminals to improve transmission performance. Figure 7 shows an example of an SCMA scheme, including 6 different sparse codes. Among them, the first and third REs of sparse code 1 are fixed to 0, and the second and fourth REs of sparse code 2 are fixed to 0, and so on. The 4 REs corresponding to each sparse codeword are called an extension unit, and the size of the extension unit is called a spreading factor. The corresponding expansion factor in FIG. 7 is 4. The spreading factor is sometimes called a spreading factor. Another code domain overlay scheme is Multiuser Shared Access (MUSA). MUSA distinguishes terminals by different extended sequences, and uses low correlation of extended sequences to reduce interference between them to improve transmission performance. Figure 8 shows an example of a MUSA extended sequence, including 8 different extended sequences. Similarly, the 4 REs corresponding to each extension sequence are called an extension unit, and the corresponding extension factor is 4. In addition, NOMA can also improve single-user transmission performance through multi-layer transmission, such as assigning multiple sparse codes or extended sequences to the same user, thereby improving single-user throughput.

A method for determining a transmission block size in this application may be executed by a first device, and may also be performed by a device (for example, a chip) used to determine a transmission block size in the first device. A transmission method in this application It may be performed by the second device, or may be performed by a transmission device (for example, a chip) applied in the second device.

The first device in the embodiment of the present application may be a terminal. The second device may be a terminal or a network device. Exemplarily, in the communication system shown in FIG. 3, the first device may be the terminal 102 and the second device may be the terminal 106. Exemplarily, in the communication system shown in FIG. 1, FIG. 2, and FIG. 4, the first device may be a terminal, and the second device may be a network device. In the following embodiment, the execution subject of the method for determining the transmission block size is a terminal, and the execution subject of the transmission method is a network device. It can be understood that, in an actual process, the transmission method using the network device as an execution subject involved in the following embodiments may also be executed by the terminal 106 shown in FIG. 3.

As shown in FIG. 9, an embodiment of the present application provides a communication method. The communication method includes:

S101. The network device sends a parameter index to the terminal. The parameter index is used by the first device to determine a modulation order, a code rate, and a number of non-orthogonal multiple access NOMA multiplexing layers corresponding to the parameter index from a preset mapping relationship. The preset mapping relationship includes at least one An index, and a parameter value of a set of parameters associated with each index in at least one index. The set of parameters includes: modulation order, code rate, and number of NOMA multiplexing layers.

Specifically, the network device may determine the parameter index according to information such as channel conditions. For example, the channel condition may be a channel quality indicator (CQI). For example, the network device sends a reference signal for channel measurement, and the terminal measures the signal-to-noise ratio of the reference signal and calculates the corresponding CQI according to the signal-to-noise ratio. The CQI is fed back to the network device, and the network device can determine the parameter index according to the CQI.

The preset mapping relationship in the embodiment of the present application may exist in a form of a table. When the preset mapping relationship exists in the form of a table, the preset mapping relationship can be called an MCS table, and the parameter index can be called an MCS index. As shown in Table 3, Table 3 shows an example of an MCS table when the NOMA technology is used in the embodiment of the present application, including information such as an index, a modulation order, a code rate, a number of NOMA multiplex layers, a spreading factor, and a spectrum efficiency.

Table 3 Example of MCS table for NOMA technology

In order to enable the NOMA transmission to flexibly adjust the MCS according to the application scenario, different combinations can correspond to the same spectral efficiency, and the network device can determine the parameter index in the following

manners

1 and 2.

Method 1: When the network device determines that an index associated with the same spectral efficiency value exists in the preset mapping relationship, and the network device determines that the number of terminals communicating with the network device on the same time-frequency resource is greater than or equal to the first threshold, the parameter index is The index with the lowest number of NOMA multiplexing layers among multiple indexes. For example, the first threshold value is 8, or the first threshold value is twice the parameter value corresponding to the expansion factor F.

For example, in Table 3, MCS = 0 corresponds to the code rate R = 480/1024, the number of NOMA multiplex layers L = 1, the spreading factor F = 4, and the spectral efficiency is 0.2344; MCS = 3 corresponds to the code rate 240/1024, NOMA multiplex The number of layers is L = 2, the expansion factor is F = 4, and the spectral efficiency is 0.2344. When the network device determines that the number of terminals communicating with the network device on the same time-frequency resource is greater than the first threshold, the number of NOMA multiplexing layers L = 1 corresponding to MCS = 0 is smaller than the number of NOMA multiplexing layers corresponding to MCS = 3 L = 2. Therefore, the network device can choose MCS = 0, that is, use single-layer transmission to reduce interference between various terminals that communicate with the network device.

Because in the actual process, the following scenarios may exist: the number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the number of the same NOMA multiplexing layers is the lowest number of NOMA multiplexing layers corresponding to multiple parameter indexes. Therefore, in this scenario, the network device may determine that the parameter index is any one of a plurality of indexes. Specifically, in order to improve transmission reliability, the network device may determine that the parameter index is the index with the largest corresponding expansion factor among the multiple indexes.

For example, in Table 3, MCS = 0 corresponds to the code rate R = 480/1024, the number of NOMA multiplexing layers L = 1, the spreading factor F = 4, and the spectral efficiency is 0.2344; MCS = 1 corresponds to the code rate 240/1024, NOMA The number of multiplexed layers is L = 1, the spreading factor F = 2, and the spectral efficiency is 0.2344. MCS = 3 corresponds to a code rate of 240/1024, the number of NOMA multiplexing layers is L = 2, the spreading factor is F = 4, and the spectral efficiency is 0.2344. When the network device determines that the number of terminals communicating with the network device on the same time-frequency resource is greater than the first threshold, the number of NOMA multiplexing layers corresponding to MCS = 0 and the number of NOMA multiplexing layers corresponding to MCS = 0 are equal to 1. L = 1 is less than the number of NOMA multiplexing layers L = 2 corresponding to MCS = 3. Therefore, the network device can choose MCS = 0 or MCS = 1. However, in order to improve the transmission reliability while reducing the interference between the terminals communicating with the network equipment by using single-layer transmission, since the expansion factor F = 4 corresponding to MCS = 0 is greater than the expansion factor F = 2 corresponding to MCS = 0, Therefore, the network device can select MCS = 0 as the parameter index.

Method 2: When the network device determines that an index associated with the same spectral efficiency value exists in the preset mapping relationship, and the network device determines that the number of terminals communicating with the network device on the same time-frequency resource is less than or equal to the second threshold, the parameter index is The index with the highest number of NOMA multiplexing layers among multiple indexes. For example, the second threshold value is 4, or the second threshold value is a parameter value corresponding to the expansion factor F.

Exemplarily, in conjunction with Table 3, when the network device determines that the number of terminals communicating with the network device on the same time-frequency resource is less than or equal to the second threshold, because the number of NOMA multiplexing layers L = 1 corresponding to MCS = 0 is less than The number of NOMA multiplexing layers corresponding to MCS = 3 is L = 2. Therefore, the network device can choose MCS = 3, that is, adopt multi-layer transmission to improve the transmission efficiency of each terminal communicating with the network device.

In the actual process, there may be the following scenarios: The number of NOMA multiplexing layers corresponding to multiple indexes is the same, and the number of the same NOMA multiplexing layers is the highest number of NOMA multiplexing layers corresponding to multiple parameter indexes. Therefore, in this scenario, the network device may determine that the parameter index is any one of a plurality of indexes. Specifically, in this scenario, the network device may determine that the parameter index is the index with the largest corresponding expansion factor among the multiple indexes.

For example, in conjunction with Table 3, MCS = 0 corresponds to a code rate R = 480/1024, the number of NOMA multiplexing layers L = 1, a spreading factor F = 4, and a spectral efficiency of 0.2344. MCS = 3 corresponds to a code rate of 240/1024, the number of NOMA multiplexing layers is L = 2, the spreading factor is F = 4, and the spectral efficiency is 0.2344. MCS = 4 corresponds to a code rate of 120/1024, the number of NOMA multiplexing layers L = 2, the spreading factor F = 2, and the spectral efficiency of 0.2344. When the network device determines that the number of terminals communicating with the network device on the same time-frequency resource is greater than the first threshold, the number of NOMA multiplexing layers L = 1 corresponding to MCS = 0 is smaller than the number of NOMA multiplexing layers corresponding to MCS = 3 The number of NOMA multiplexing layers L = 2 corresponding to the number L = 2 and MCS = 4, and the number of NOMA multiplexing layers L = 2 corresponding to MCS = 3 and the number of NOMA multiplexing layers L = 2 corresponding to MCS = 4 are equal. In this case, in order to improve transmission reliability and network coverage, the network device may select MCS = 4 as the parameter index. In this way, not only can multi-layer transmission be used to improve the transmission efficiency of each terminal communicating with the network equipment, but also the transmission reliability can be improved.

Table 4 Example of MCS table for NOMA technology (the number of terminals is greater than the first threshold)

Table 5 Example of MCS table for NOMA technology (the number of terminals is less than the second threshold)

The preset mapping relationship in the embodiment of the present application may also be implemented through multiple MCS tables, and different MCS tables correspond to different numbers of terminals, respectively. As shown in Table 4 and Table 5, Table 5 and Table 4 respectively show two MCS table examples when the NOMA technology is used in the embodiments of the present application. When the number of terminals communicating on the same time-frequency resource is greater than the first threshold, the preset mapping relationship corresponding to Table 4 is adopted. When the number of terminals communicating on the same time-frequency resource is less than the second threshold, the preset mapping relationship corresponding to Table 5 is adopted. In this case, the network device may also send a target index corresponding to the preset mapping relationship to the terminal, and the target index corresponding to the preset mapping relationship is used by the terminal to determine the preset mapping relationship corresponding to the target index. For example, when the network device determines that the number of terminals communicating on the same time-frequency resource is greater than the first threshold, it may send the MCS table index corresponding to Table 4 and the parameter index in the MCS table corresponding to Table 4 to the terminal. In this way, the terminal can determine the parameter value of a group of parameters corresponding to the parameter index from Table 4 according to the parameter index.

Exemplarily, the network device in the embodiment of the present application may use a radio resource control (Radio Resource Control (RRC)) configuration message, a medium access control (MAC) control unit (Control Elements, CEs), or downlink control information. (Downlink ControlInformation, DCI) sends a parameter index to the terminal.

S102. The terminal obtains a parameter index.

As an example, a terminal may obtain a parameter index from an RRC configuration message, MAC CEs, or DCI sent by a network device.

In another example, the terminal may also determine a parameter index according to information such as channel conditions. For example, the channel condition may be a CQI corresponding to a reference signal. In this implementation manner, after the terminal determines the parameter index, the terminal may also notify the network device of the determined parameter index through a control message or a preset rule. It can be understood that when the terminal determines the parameter index according to information such as channel conditions, step S101 may be omitted.

The parameter index in the embodiment of the present application may be expressed using a fixed number of bits. For example, the parameter index in the existing NR system is expressed by 5 bits. Using the same number of bits can be compatible with existing signaling designs, simplifying system design.

S103. The terminal determines a modulation order, a code rate, a spreading factor, and a number of non-orthogonal multiple access NOMA multiplexing layers corresponding to the parameter index according to a parameter index and a preset mapping relationship.

In the embodiment of the present invention, the terminal has a preset mapping relationship, and the preset mapping relationship may be pre-configured to the terminal or sent by the network device to the terminal. This embodiment of the present application does not limit this.

Optionally, different parameter indexes in this application correspond to different sets of parameters.

On the one hand, a different set of parameters in the embodiments of the present application may refer to: parameter values of all parameters included in the two sets of parameters are different. For example, a set of parameters corresponding to index 1 and a set of parameters corresponding to index 2 are different: the modulation order corresponding to index 1 and the modulation order corresponding to parameter index 2 are different, the code rate corresponding to index 1 and the code corresponding to index 2 With different rates, the number of NOMA multiplexing layers corresponding to index 1 and the number of NOMA multiplexing layers corresponding to index 2 are different, and the expansion factor corresponding to index 1 and the expansion factor corresponding to parameter index 2 are different. In addition, it may further include that the spectral efficiency corresponding to the index 1 and the spectral efficiency corresponding to the index 2 are different.

On the other hand, the different sets of parameters in the embodiments of the present application may also refer to: the parameter values of some parameters included in any two sets of parameters are different, and the parameter values of other parameters are the same. For example, a set of parameters corresponding to index 1 and a set of parameters corresponding to index 2 are different: the modulation order corresponding to index 1 and the modulation order corresponding to index 2 are the same, but the code rate corresponding to index 1 and the code corresponding to index 2 With different rates, the number of NOMA multiplexing layers corresponding to index 1 and the number of NOMA multiplexing layers corresponding to index 2 are the same, and the expansion factor corresponding to index 1 and the expansion factor corresponding to index 2 are different. In addition, it may further include that the spectral efficiency corresponding to the index 1 and the spectral efficiency corresponding to the index 2 are different.

Optionally, as shown in Table 3, a set of parameters in the embodiment of the present application may further include spectrum efficiency. In the embodiment of the present application, the preset mapping relationship includes at least two indexes, and at least two indexes are associated with the same frequency spectrum. The index of the efficiency value. This allows the NOMA transmission to flexibly adjust the MCS according to the application scenario, and different combinations can correspond to the same spectral efficiency.

Further optionally, the parameter values of some parameters in a set of parameters corresponding to any two or more indexes of at least two indexes are different.

For example, the spectral efficiency corresponding to parameter index 1 is the same as the spectral efficiency corresponding to parameter index 2, and the expansion factor corresponding to parameter index 1 and the expansion factor corresponding to parameter index 2 are different.

S104. The terminal determines a transmission block size for communication with the second device according to a modulation order, a code rate, a spreading factor, and a number of NOMA multiplexing layers corresponding to the parameter index.

For example, step S104 may be implemented in the following manner: the terminal determines the number of resource elements (RE) for data transmission, and the terminal determines the number of REs used for data transmission and the modulation order and code rate corresponding to the parameter index , The expansion factor and the number of NOMA multiplexing layers, calculate the number of information bits, and the terminal quantifies the number of information bits to determine a transmission block size for communication with the second device.

For example, the terminal may determine the number of REs used for data transmission in the following manner: The terminal may be obtained by multiplying the number of REs used for data transmission in each RB by the number of RBs used for data transmission. The number of REs used for data transmission in each RB is equal to the number of REs in each RB minus the number of REs used for demodulating a reference signal, and then subtracted from the number of REs used in other channels (eg, control channels) or reference signals.

For example, the terminal calculates the number of information bits according to the formula N _info = N _RE × R × L × Q _m / F, where N _RE represents the number of _REs used for data transmission, R represents the code rate, and L represents the number of NOMA multiplexing layers. , Q _m represents the modulation order, F represents the spreading factor, and N _info represents the number of information bits.

Specifically, the terminal quantifies the number of information bits. A method for determining a transmission block size may be implemented by referring to a method described in 3GPP TS 38.214 Section 5.1.3.2.

When multiple antennas are deployed at the transmitting and receiving ends, multiple data streams can be sent simultaneously using multiple antennas, and each data stream is referred to as a MIMO spatial layer. When a transmitting end (for example, a terminal) uses multiple MIMO spatial layers for transmission, it may also be necessary to determine a transmission block size for communication with the second device according to the number of MIMO spatial layers v (v is an integer greater than or equal to 1), where different The set of parameters corresponding to the MIMO spatial layer may be different or the same.

As shown in FIG. 11, there are v MIMO spatial layers in total. Each MIMO spatial layer includes multiple NOMA multiplexing layers. Different NOMA multiplexing layers of the same MIMO spatial layer can be multiplexed through the code domain or power domain.

Each MIMO spatial layer can use different MCS indexes, and the parameter values of a set of parameters corresponding to different MIMO spatial layers are different, that is, different MIMO spatial layers may correspond to different code rates, NOMA multiplexing layers, modulation order, and extension Factorial. In this case, step S104 may be specifically implemented in the following manner: The terminal determines the number of NOMA multiplexing layers corresponding to the parameter index of each MIMO spatial layer among multiple MIMO spatial layers according to the number of REs used for data transmission. A parameter value, a parameter value of a modulation order, a parameter value of a code rate, and a parameter value of a spreading factor determine a transmission block size for communication with the second device.

For example, the terminal can be based on the formula

Calculate the number of information bits. Wherein, N _RE RE represents a number of data transmission, R _i represents the i-th bit rate MIMO spatial _layers, Q _{m, i} denotes the i-th modulation order MIMO spatial layers, L _i denotes the i th MIMO space The number of NOMA multiplexing layers in a layer, F _i represents the expansion factor of i MIMO spatial layers, and N _info represents the number of information bits.

Multiple MIMO spatial layers can also use the same MCS index, corresponding to the same set of parameter parameter values, that is, multiple MIMO spatial layers correspond to the same code rate, the same number of NOMA multiplexing layers, and the same modulation order and The same expansion factor. Then the terminal may calculate the number of information bits according to the formula: N _info = N _RE × R × v × L × Q _m / F. Among them, N _RE is the number of REs used for data transmission, R is the code rate, v is the number of MIMO spatial layers, L is the number of NOMA multiplexing layers of each MIMO layer, Q _m is the modulation order, and F is the expansion factor.

As a possible implementation manner, in the embodiment of the present invention, the terminal may also calculate the transmission block size according to the spectral efficiency.

For example, the terminal determines the number of information bits according to the formula N _info = N _RE × S. Among them, N _RE represents the number of REs used for data transmission, S represents spectral efficiency, and N _info represents the number of information bits.

It should be noted that if the parameter indexes corresponding to different MIMO spatial layers in the multiple MIMO spatial layers are different, the parameter index acquired by the terminal includes the parameter index of each MIMO spatial layer.

An embodiment of the present application provides a method for determining a transmission block size. A terminal obtains a parameter index and combines a preset mapping relationship to determine a modulation order, a code rate, an expansion factor, and a non-orthogonal multiple access corresponding to the parameter index. Number of NOMA reuse layers. Then, a transmission block size for communication with the second device is determined according to a modulation order, a code rate, a spreading factor, and a number of non-orthogonal multiple access NOMA multiplexing layers. Compared with the prior art, information such as the number of layers of NOMA multiplexing and expansion factor does not require other signaling notifications, which can simplify signaling design and reduce signaling overhead.

As another embodiment of the present invention, as shown in FIG. 10, after step S105, the method further includes:

S105. The terminal sends data to the network device according to the modulation order, code rate, spreading factor, and number of NOMA multiplexing layers corresponding to the parameter index.

S106. The network device receives data sent by the terminal according to a modulation order, a code rate, a spreading factor, and a number of NOMA multiplexing layers corresponding to the parameter index.

Specifically, as shown in FIG. 12, after determining the modulation order, code rate, spreading factor, and number of NOMA multiplexing layers corresponding to the parameter index, the terminal may further include the following process:

Process 1. The channel coding module of the terminal performs channel coding on the input bits to obtain a coded bit sequence. For channel coding, the number of input bits is equal to the TBS calculated by the terminal in step S104.

Among them, the channel coding can provide a certain error correction capability, and the specific coding method can be a Low Density Check (LDPC), a Turbo code, a Polar code, and the like.

Step 2: The bit scrambling module of the terminal performs bit scrambling on the encoded bit sequence to obtain a scrambled bit sequence.

Among them, bit scrambling is an exclusive-OR operation of a coded bit sequence and a scrambled sequence bit by bit to obtain a scrambled bit. The scrambling sequence is usually generated according to a predefined rule, and the scrambling sequence itself has a certain randomness. Different senders can use different scrambling sequences for scrambling, thereby reducing the correlation between the data at the senders and reducing the interference caused by simultaneous transmissions. The bit scrambling module in FIG. 12 can be replaced by bit interleaving, and the effects of bit interleaving and bit scrambling are similar. Bit interleaving and bit scrambling can also be used at the same time, and scrambling can be performed before interleaving, or interleaving can be performed before scrambling, which is not limited in this embodiment of the present application.

Process 3. The terminal modulates the scrambled bit sequence to obtain a modulation symbol. For example, the modulation module of the terminal may use the modulation order corresponding to the parameter index to modulate the scrambled bit sequence.

Among them, modulation can be viewed as a bit-to-symbol mapping.

Exemplarily, the modulation may adopt a modulation scheme in which one or more bits are mapped into a single modulation symbol. For example, π / 2-Binary Phase Shift Keying (BPSK), BPSK, Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64QAM, 256QAM, etc.

Modulation can also adopt a scheme that maps one or more bits into multiple modulation symbols, also known as multi-dimensional modulation. For example, a codebook of Sparse Code Multiple Access (SCMA) maps two bits to two REs, for example, 00, 01, 10, and 11 are mapped to (1, 0) (0, 1), (0, -1), (-1, 0), where a symbol in parentheses corresponds to an RE.

Process 4. The layer mapping module of the terminal performs layer mapping on the modulation symbols. For example, the terminal performs layer mapping on the number of NOMA multiplexing layers corresponding to the modulation index using the parameter index.

Process 5. Each symbol extension module of the terminal performs symbol extension on the modulation symbols after layer mapping. For example, the terminal performs symbol extension on the modulation symbol using an expansion factor corresponding to the parameter index.

For single-layer transmission, it is not necessary to perform additional layer mapping operations, and directly perform symbol extension. For multi-layer transmission, the terminal modulates the scrambled bit sequence and performs layer mapping to map the modulation symbols to different layers, and then performs symbol extension on the modulation symbols of each layer.

As shown in FIG. 13, FIG. 13 shows a method of symbol extension based on an extended sequence, and two layers of modulation symbols correspond to different extended sequences, respectively. The modulation symbols of the two layers are 1 and -1, and the spreading sequence is [1, j, -1, -j] ^{T. The} output modulation symbols are obtained by multiplying the spreading sequence and the two input modulation symbols, of which the first 4 are The output modulation symbol corresponds to the first input modulation symbol, and the last 4 output modulation symbols correspond to the second input modulation symbol. The expansion factor is determined by the terminal from a preset relationship according to the parameter index, that is, the expansion factor F in the MCS table.

In FIG. 13, the expansion factor is 4 as an example. For convenience of description, an output symbol corresponding to each symbol expansion operation is defined as an expansion unit. Each expansion unit in FIG. 13 includes 4 output symbols. To support higher spectral efficiency or coverage enhancement, other spreading factors can be used. When the expansion factor is smaller, the resources occupied by each expansion unit are less, the more data can be carried by the same resource, and the corresponding spectrum efficiency is higher. When the expansion factor is larger, the resources occupied by each expansion unit are more, the transmission reliability is improved, and the corresponding network coverage is enhanced. When the spreading factor is 1, it corresponds to the existing scheme without sign extension.

As shown in FIG. 14, FIG. 14 shows a symbol extension method based on an extension matrix, and each layer of modulation symbols corresponds to a different extension matrix. The input modulation symbol is (1, -1) and the expansion matrix is W. The matrix is multiplied by the input modulation symbol to obtain the output modulation symbol. Unlike the spreading method based on the spreading sequence, the spreading method based on the spreading matrix may have multiple input modulation symbols at a time. At this time, the expansion factor corresponds to the number of rows of the expansion matrix W. Similarly, the output symbol corresponding to each sign extension operation is defined as a sign extension unit, and each sign extension unit in FIG. 14 includes 4 output symbols. When a symbol expansion method based on an expansion matrix is adopted, the spectrum efficiency or network coverage can also be improved by adjusting the expansion factor.

As shown in FIG. 15, FIG. 15 shows a symbol extension method based on a set of extended sequences, in which N input modulation symbols are respectively mapped into N predefined modulation symbol sequences. Different layers of modulation symbols can use different sets of spreading sequences. Exemplarily, if the input modulation symbol is x ₁ , the output modulation symbol sequence is [1, j, -1, -j]. Similarly, the expansion factor corresponding to FIG. 15 is 4, each expansion unit contains 4 output symbols, and the spectrum efficiency or network coverage can also be improved by adjusting the expansion factor.

In addition, the adjustment factor module in the terminal may also multiply the symbol sequence after sign extension input into the respective adjustment factor module by the adjustment factor to adjust the power and phase of each layer. Then superimpose the symbols on each layer. For multi-antenna scenarios, the overlay can be replaced with MIMO precoding. Finally, RE mapping is performed on the superimposed or precoded symbol sequence.

As shown in FIG. 16, FIG. 16 shows another communication method provided by an embodiment of the present invention. The method includes:

S201. The network device sends a parameter index and an expansion factor to the terminal, where the parameter index is used by the terminal to determine a modulation order, a code rate, and a number of NOMA multiplexing layers corresponding to the parameter index from a preset mapping relationship. The preset mapping relationship includes: at least one index, and a parameter value of a set of parameters associated with each index in the at least one index. The set of parameters includes: modulation order, code rate, and number of NOMA multiplexing layers.

The parameter index and the expansion factor may be sent to the terminal in the same message, or may be sent to the terminal in different messages, which are not limited in this embodiment of the present invention. Specifically, for the manner in which the network device sends the parameter index and the expansion factor in step S201, reference may be made to the description at step S101, which is not repeatedly described in this embodiment of the present invention.

Specifically, the network device may determine the expansion factor according to information such as channel conditions.

S202. The terminal obtains a parameter index and an expansion factor.

It should be noted that, in this embodiment, when the parameter index and the expansion factor are determined by the terminal according to the channel conditions, step S201 may be omitted.

S203. The terminal determines a modulation order, a code rate, and a number of non-orthogonal multiple access NOMA multiplexing layers corresponding to the parameter index according to the parameter index and a preset mapping relationship.

Exemplarily, the preset mapping relationship here is different from the preset mapping relationship in steps S101-S104 in that the preset mapping relationship in this embodiment may not include an expansion factor.

Exemplarily, Tables 6 and 7 respectively show examples of MCS tables of NOMA under different expansion factors.

Table 6 Example of a MCS table for NOMA (expansion factor F = 2)

Table 7 Example of MCS table for NOMA (spreading factor F = 4)

The difference between Table 3 and Tables 6 and 7 is that in the scheme shown in Table 3, the expansion factor dynamically changes with the change of the parameter index, while in the schemes shown in Table 6 and Table 7, the expansion factor is fixed. of. That is, no matter how the parameter index changes in Table 6, the expansion factor determined by the terminal is 2; in Table 7, no matter how the parameter index changes, the expansion factor determined by the terminal is 4.

It should be noted that different indexes in the embodiments of the present invention correspond to different combinations of modulation order, code rate, and number of NOMA multiplexing layers. In order to enable NOMA transmission to flexibly adjust MCS according to the application scenario, different combinations can correspond to the same spectral efficiency. For example, when the expansion factor F = 4, MCS = 0 corresponds to the code rate R = 480/1024, the number of NOMA multiplex layers L = 1 and the spectral efficiency 0.2344; MCS = 3 corresponds to the code rate 240/1024, and the number of NOMA multiplex layers L = 2 and 0.2344. When the number of terminals communicating with the network device on the same time-frequency resource is greater than the first threshold, the network device may select MCS = 0, that is, use single-layer transmission to reduce interference between the terminals. When the number of terminals communicating with the network device on the same time-frequency resource is less than the second threshold. Network equipment can choose MCS = 3, that is, multi-layer transmission is used to improve the transmission efficiency of a single terminal. Compared with the prior art, the number of NOMA multiplexing layers does not require other signaling notifications, which can simplify signaling design and reduce signaling overhead.

In the above embodiment, the terminal first determines which MCS table to use according to the expansion factor, and then determines the modulation order, code rate, and non-orthogonal multiple access NOMA multiplexing corresponding to the parameter index according to the determined MCS table and parameter index Number of layers.

S204. The terminal determines a transmission block size to communicate with the second device according to the expansion factor and the modulation order, code rate, and number of NOMA multiplexing layers corresponding to the parameter index.

Specifically, for the implementation manner of step S204, reference may be made to the description at S104, which is not repeatedly described in the embodiment of the present invention.

Optionally, as another embodiment of the embodiment of the present invention, as shown in FIG. 17, after step S204, the method further includes:

S205. The terminal sends data to the network device according to the modulation order, code rate, spreading factor, and number of NOMA multiplexing layers corresponding to the parameter index.

S206. The network device receives the data sent by the terminal according to the expansion factor, the modulation order corresponding to the parameter index, the code rate, and the number of NOMA multiplexing layers.

In addition, in the embodiments described in FIG. 16 to FIG. 17, the terminal may also process the input bits based on FIG. 18. For specific processing procedures, reference may be made to the procedures 1 to 5 described in the foregoing embodiments, which are not repeatedly described in this embodiment of the present application.

It should be noted that the embodiment described in FIG. 16 to FIG. 18 is different from the embodiment described in FIGS. 9 to 15 in that the network device not only sends an expansion factor to the terminal, but also sends a parameter index to the terminal. In the embodiments described in FIG. 16 to FIG. 18, the expansion factor is acquired by the terminal from the network device, or is determined by the terminal according to the channel condition. In the embodiments described in FIG. 9 to FIG. 15, the expansion factor is obtained by the terminal from a preset mapping relationship according to a parameter index sent by the network device. However, the processing procedure shown in FIG. 18 is compared with the processing procedure shown in FIG. 12. In FIG. 12, the expansion factor is determined by the terminal from a preset mapping relationship according to a parameter index. In FIG. 18, the expansion factor is obtained in advance by the terminal from the network device, or determined by the terminal according to the channel condition.

It should be noted that when the terminal and the network device negotiate a specific parameter value of the expansion factor, the network device may not send the expansion factor to the terminal in step S201. In addition, when the terminal uses multiple MIMO spatial layers for transmission in steps S201-S206, and different MIMO spatial layers correspond to different parameter indexes, step S204 is implemented by: The expansion factor corresponding to the layer, and the parameter value of the modulation order and the parameter value of the code rate corresponding to the parameter index of each MIMO spatial layer determine the transmission block size for communication with the second device. Specifically, reference may be made to the foregoing formula for calculating N _info when the terminal transmits in multiple MIMO spatial layers, which is not repeatedly described in this embodiment of the present application.

For a specific implementation process, reference may be made to the description in FIG. 11 described above, which is not repeatedly described in the embodiment of the present application.

As shown in FIG. 19, FIG. 19 is a schematic flowchart of another communication method according to an embodiment of the present application. The solution includes:

S301. The network device sends a parameter index and the number of non-orthogonal multiple access NOMA multiplexing layers to the terminal. The parameter index is used by the terminal to determine the modulation order, code rate, and expansion factor corresponding to the parameter index from a preset mapping relationship. The preset mapping relationship includes at least one index and each index association in at least one index. The parameter value of a set of parameters, including a modulation order, a code rate, and a spreading factor.

Specifically, the network device may determine the parameter index and the number of non-orthogonal multiple access NOMA multiplexing layers according to the channel conditions.

Among them, the network device may send the parameter index and the number of non-orthogonal multiple access NOMA multiplexing layers to the terminal through MAC CEs, DCI or RRC messages. The parameter index and the number of non-orthogonal multiple access NOMA multiplexing layers may be carried in the same signaling message and sent to the terminal, or may be carried in different messages and sent to the terminal, which is not limited in this embodiment of the present application.

Exemplarily, Table 8 and Table 9 respectively show the contents of the preset mapping relationship under different numbers of NOMA multiplexing layers.

Table 8 Example of MCS table for NOMA (NOMA multiplex layer L = 1)

MCS index _MCS

Modulation order Q _m

Bit rate R × [1024]

Expansion factor F

Spectral efficiency

00	22	480480	44	0.23440.2344
11	22	240240	22	0.23440.2344
22	22	120120	11	0.23440.2344
33	22	772772	44	0.37700.3770
44	22	386386	22	0.37700.3770
55	22	193193	11	0.37700.3770

Table 9 Example of MCS table for NOMA (NOMA multiplex layer L = 2)

The difference between the preset mapping relationships shown in Tables 8 and 9 and the mapping relationship shown in Table 3 is that the number of NOMA multiplexing levels in Table 3 varies with the parameter index, that is, the NOMA multiplexing corresponding to different parameter indexes The number of layers is different. In Tables 8 and 9, the number of NOMA multiplexing layers is fixed. For example, the number of NOMA multiplexed layers L = 1 in Table 8, and the number of NOMA multiplexed layers L = 2 in Table 9.

Specifically, for a manner of how the network device selects the parameter index, reference may be made to the description at step S101, which is not repeatedly described in this embodiment of the present application. For example, when the number of NOMA multiplexing layers is L = 1, MCS = 0 corresponds to a code rate of R = 480/1024, a spreading factor of F = 4, and a spectral efficiency of 0.2344. MCS = 1 corresponds to a code rate of 240/1024, a spreading factor F = 2, and a spectral efficiency of 0.2344. When the number of terminals communicating with the network device on the same time-frequency resource is greater than the first threshold, the network device may select MCS = 0, that is, use a large expansion factor to reduce the terminals communicating with the network device on the same time-frequency resource. Interference between the terminals, because the larger the expansion factor, the lower the correlation between the terminals. When the number of terminals communicating with the network device on the same time-frequency resource is less than the second threshold, the network device can choose MCS = 1, that is, use a small expansion factor to improve the transmission efficiency of each terminal, because the small expansion factor corresponds to The encoding efficiency of the terminal is higher. Compared with the prior art, information such as the number of layers of NOMA multiplexing, the modulation order Q _m , the code rate, and the expansion factor do not require other signaling notifications, which can simplify the signaling design and reduce the signaling overhead.

S302. The terminal obtains a parameter index and the number of non-orthogonal multiple access NOMA multiplexing layers.

Specifically, for the manner in which the terminal obtains the parameter index and the number of NOMA multiplexing layers, reference may be made to the description at step S202, which is not repeatedly described in this embodiment of the present invention.

S303. The terminal determines a modulation order, a code rate, and a spreading factor corresponding to the parameter index according to the parameter index and a preset mapping relationship.

Specifically, the terminal first determines which MCS table to use according to the number of NOMA multiplexing layers, and then determines the modulation order, code rate, and expansion factor corresponding to the parameter index according to the obtained parameter index and the determined MCS table.

S304. The terminal determines a transmission block size to communicate with the second device according to the number of NOMA multiplexing layers and a modulation order, a code rate, and an expansion factor corresponding to the parameter index.

For a specific implementation manner of step S304, reference may be made to the description at step S101, which is not repeatedly described in this embodiment of the present application.

Optionally, as another embodiment of the embodiment of the present invention, as shown in FIG. 20, after step S304, the method further includes:

S305. The terminal sends data to the network device according to the number of NOMA multiplexing layers and the modulation order, code rate, and expansion factor corresponding to the parameter index.

S306. The network device receives data sent by the terminal according to the number of NOMA multiplexing layers and the modulation order, code rate, and expansion factor corresponding to the parameter index.

In addition, in the embodiments described in FIG. 19 and FIG. 20, the terminal may also process the input bits based on FIG. 21. For specific processing procedures, reference may be made to the procedures 1 to 5 described in the foregoing embodiments, which are not repeatedly described in this embodiment of the present application.

It should be noted that the embodiment described in FIGS. 19-21 is different from the embodiment described in FIGS. 9-15 in that the network device not only sends the parameter index to the terminal, but also sends the number of NOMA multiplexing layers to the terminal. In the embodiments described in FIG. 19 to FIG. 21, the number of NOMA multiplexing layers is obtained by the terminal from a network device, or determined by the terminal according to a channel condition. In the embodiments described in FIG. 9 to FIG. 15, the expansion factor is obtained by the terminal from a preset mapping relationship according to a parameter index sent by the network device. And compared with the processing procedure shown in FIG. 12, the number of NOMA multiplexing layers in FIG. 12 is determined by the MCS selection module of the terminal from the preset mapping relationship according to the parameter index. In FIG. 21, the number of NOMA multiplexing layers is obtained in advance by a terminal from a network device, or determined by the terminal according to a channel condition.

It should be noted that when the terminal and the network device negotiate the specific parameter value of the NOMA multiplex layer, the network device may not send the NOMA multiplex layer number to the terminal in step S301.

When the terminal uses multiple MIMO spatial layers for transmission, step S304 can also be implemented by: according to the number of NOMA multiplexing layers corresponding to each MIMO spatial layer in the multiple MIMO spatial layers and the parameter index of each MIMO spatial layer. The corresponding code rate, modulation order, and spreading factor determine the size of a transmission block that is in communication with the second device. In this case, for a specific implementation manner of determining a transmission block size for communication with the second device, reference may be made to the description in FIG. 11, which is not repeatedly described in this embodiment of the present invention. Specifically, for the manner in which N _info is calculated when the parameter indexes corresponding to different MIMO spatial layers are different and the parameter indexes corresponding to different MIMO spatial layers are the same, reference may be made to the foregoing description, which is not repeatedly described in the embodiment of this application.

As shown in FIG. 22, FIG. 22 provides a downlink transmission and parameter determination method. The method includes:

S401. The network device sends a parameter index to the terminal, where the parameter index is used to determine a parameter value of a group of parameters from a preset mapping relationship, where the preset mapping relationship includes at least one index and an index associated with each index in the at least one index. A parameter value of a set of parameters. The set of parameters includes: a code rate, a modulation order, a number of NOMA multiplexing layers, and a spreading factor.

For the specific form of the preset mapping relationship, reference may be made to the description at step S101, which is not repeatedly described in this embodiment of the present invention.

S402. The terminal obtains a parameter index.

For the specific implementation of step S402, reference may be made to the description at step S102, which is not repeatedly described in this embodiment of the present invention.

S403. The terminal determines a parameter value of a group of parameters corresponding to the parameter index according to the parameter index and a preset mapping relationship.

S404. The network device sends data to the terminal according to a parameter value of a group of parameters corresponding to the parameter index.

S405. The terminal receives data sent by the network device according to a parameter value of a group of parameters corresponding to the parameter index.

As shown in FIG. 23, FIG. 23 provides a method for downlink transmission and parameter determination. The method includes:

S501. The network device sends a parameter index and an expansion factor to the terminal. The parameter index is used to determine a parameter value of a group of parameters from a preset mapping relationship. The preset mapping relationship includes at least one index and each of the at least one index. The parameter value of a set of parameters associated with the index. The set of parameters includes: code rate, modulation order, and number of NOMA multiplexing layers.

S502. The terminal obtains a parameter index and an expansion factor.

For the specific implementation of step S502, reference may be made to the description at step S102, which is not repeatedly described in this embodiment of the present invention.

S503. The terminal determines a parameter value of a group of parameters corresponding to the parameter index according to the parameter index and a preset mapping relationship.

S504. The network device sends data to the terminal according to a parameter value and an expansion factor of a set of parameters corresponding to the parameter index.

S505. The terminal receives data sent by the network device according to a parameter value of a set of parameters corresponding to the expansion factor and the parameter index.

As shown in FIG. 24, FIG. 24 provides a downlink transmission and parameter determination method. The method includes:

S601. The network device sends a parameter index and the number of NOMA multiplexing layers to the terminal. The parameter index is used to determine a parameter value of a group of parameters from a preset mapping relationship, where the preset mapping relationship includes at least one index and at least one index. A parameter value of a set of parameters associated with each index in the set, the set of parameters includes: code rate, modulation order, and spreading factor.

S602. The terminal obtains a parameter index and the number of NOMA multiplexing layers.

For a specific implementation of step S602, reference may be made to the description at step S102, which is not repeatedly described in this embodiment of the present invention.

S603. The terminal determines a parameter value of a group of parameters corresponding to the parameter index according to the parameter index and a preset mapping relationship.

S604. The network device sends data to the terminal according to a parameter value of a group of parameters corresponding to the parameter index and the number of NOMA multiplexing layers.

S605. The terminal receives data sent by the network device according to the number of NOMA multiplexing layers and a parameter value of a group of parameters corresponding to the parameter index.

The above mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various network elements. It can be understood that, in order to implement the above functions, each network element, such as a terminal or a network device, includes a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware, software, or a combination of hardware and computer software. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application of the technical solution and design constraints. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

The embodiments of the present application may divide the functional modules of the terminal and the network device according to the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of the modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. The following description is made by taking each functional module as an example:

In the case of using an integrated unit, FIG. 25 shows a possible structural diagram of a device for determining a transmission block size involved in the foregoing embodiment. The device for determining a transmission block size may be a terminal, or Chips used in terminals. The apparatus for determining a transmission block size includes an obtaining unit 201 and a determining unit 202. The obtaining unit 201 is configured to support a device for determining a transmission block size to perform step S102 in the foregoing embodiment. The determining unit 202 is configured to support a device for determining a transmission block size to perform steps S103 and S104 in the foregoing embodiment. Optionally, the apparatus for determining a transmission block size further includes: a sending unit 203, configured to support the apparatus for determining a transmission block size to perform step S105 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

As another possible implementation manner, the obtaining unit 201 in the embodiment of the present application is configured to support a device for determining a transmission block size to perform step S202 in the foregoing embodiment. The determining unit 202 is configured to support a device for determining a transmission block size to perform steps S203 and S204 in the foregoing embodiment. Optionally, the sending unit 203 is configured to support a device for determining a transmission block size to perform step S205 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

As another possible implementation manner, the obtaining unit 201 in the embodiment of the present application is configured to support the apparatus for determining a transmission block size to perform step S302 in the foregoing embodiment. The determining unit 202 is configured to support a device that determines a transmission block size to perform steps S303 and S304 in the foregoing embodiment. Optionally, the sending unit 203 is configured to support a device for determining a transmission block size to perform step S305 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

In the case of using an integrated unit, FIG. 26 shows a schematic diagram of a possible logical structure of the device for determining a transmission block size involved in the foregoing embodiment. The device for determining the size of a transmission block may be the one in the foregoing embodiment. Terminals, or chips used in China. The device for determining the transmission block size includes a processing module 212 and a communication module 213. The processing module 212 is used to control and manage the actions of the device that determines the size of the transmission block. For example, the processing module 212 is used to perform the steps of performing message or data processing on the device side that determines the size of the transmission block. The device executes S103 and S104 in the above embodiment. The communication module 213 is configured to support the apparatus for determining a transmission block size to perform S102 and S105 in the foregoing embodiment. And / or other processes for the techniques described herein performed by a device that determines a transport block size.

Optionally, the device for determining the size of the transmission block may further include a storage module 211 for storing program code and data of the device for determining the size of the transmission block.

The processing module 212 may be a processor or a controller, for example, it may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 213 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 211 may be a memory.

When the processing module 212 is the processor 220, the communication module 213 is the communication interface 230 or the transceiver, and the storage module 211 is the memory 240, the device for determining the size of the transmission block involved in this application may be the device shown in FIG. 27.

The communication interface 230, one or more (including two) processors 220, and the memory 240 are connected to each other through the bus 210. The bus 210 may be a PCI bus, an EISA bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 27, but it does not mean that there is only one bus or one type of bus. The memory 240 is configured to store program code and data of a device for determining a transmission block size. The communication interface 230 is configured to support a device for determining a transmission block size to communicate with other devices (for example, a network device), for example, support for performing S102 and S105. The processor 220 is configured to support a device for determining a transmission block size to execute program codes and data stored in the memory 240 to implement S103 and S104 provided in the present application.

As another possible implementation manner, in the apparatus for determining a transmission block size shown in FIG. 26, the processing module 212 is configured to support the apparatus for determining a transmission block size to perform S203 and S204 in the foregoing embodiment. The communication module 213 is configured to support the apparatus for determining a transmission block size to perform S202 and S205 in the foregoing embodiment. And / or other processes for the techniques described herein performed by a device that determines a transport block size.

As another possible implementation manner, in the apparatus for determining a transmission block size shown in FIG. 26, the processing module 212 is configured to support the apparatus for determining a transmission block size to perform S303 and S304 in the foregoing embodiment. The communication module 213 is configured to support the apparatus for determining a transmission block size to perform S302 and S305 in the foregoing embodiment. And / or other processes for the techniques described herein performed by a device that determines a transport block size.

As another possible implementation manner, in the apparatus for determining a transmission block size shown in FIG. 27, for example, the communication interface 230 supports the apparatus for determining a transmission block size to perform S202 and S205. The processor 220 is configured to support a device for determining a transmission block size to execute program codes and data stored in the memory 240 to implement S203 and S204 provided in the present application.

As another possible implementation manner, among the apparatus for determining a transmission block size shown in FIG. 27, for example, the communication interface 230 supports the apparatus for determining a transmission block size to perform S302 and S305. The processor 220 is configured to support a device for determining a transmission block size to execute program codes and data stored in the memory 240 to implement S303 and S304 provided in the present application.

In the case of using an integrated unit, FIG. 28 shows a possible structural diagram of a transmission device involved in the foregoing embodiment, and the transmission device may be a network device or a chip in the network device. The transmission device includes a sending unit 301 and a receiving unit 302. The sending unit 301 is configured to support the transmission device to perform step S101 in the foregoing embodiment. The receiving unit 302 is configured to support the data transmission device to perform step S106 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

As another possible implementation manner, in the transmission device shown in FIG. 28, the sending unit 301 is configured to support the transmission device to perform step S201 in the foregoing embodiment. The receiving unit 302 is configured to support the data transmission device to perform step S206 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be described again here.

As another possible implementation manner, in the transmission device shown in FIG. 28, the sending unit 301 is configured to support the transmission device to perform step S301 in the foregoing embodiment. The receiving unit 302 is configured to support the data transmission device to perform step S306 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

In the case of using an integrated unit, FIG. 29 shows a schematic diagram of a possible logical structure of the transmission device involved in the foregoing embodiment, and the transmission device may be a network device in the foregoing embodiment, or may be applied to a network Chips in the device. The transmission device includes a processing module 312 and a communication module 313. The processing module 312 is configured to control and manage the actions of the transmission device. For example, the processing module 312 is configured to perform steps of performing message or data processing on the transmission device. The communication module 313 is configured to support the transmission device to execute S101 and S106 in the foregoing embodiment. And / or other processes performed by the transmission device for the techniques described herein.

Optionally, the transmission device may further include a storage module 311 for storing program code and data of the transmission device.

The processing module 312 may be a processor or a controller, for example, it may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 313 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 311 may be a memory.

When the processing module 312 is the processor 320, the communication module 313 is the communication interface 330 or the transceiver, and the storage module 311 is the memory 340, the transmission device involved in this application may be the device shown in FIG. 30.

The communication interface 330, one or more (including two) processors 320, and the memory 340 are connected to each other through a bus 310. The bus 310 may be a PCI bus, an EISA bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 30, but it does not mean that there is only one bus or one type of bus. The memory 340 is configured to store program codes and data of the transmission device. The communication interface 330 is used to support the transmission device to communicate with other devices (for example, terminals), and the processor 320 is used to support the transmission device to execute the program code and data stored in the memory 340 to implement S101 and S105 provided in this application.

As another possible implementation manner, in the transmission device shown in FIG. 29, the communication module 213 is configured to support the transmission device to perform S201 and S206 in the foregoing embodiment. And / or other processes performed by a transmission device for the techniques described herein.

As another possible implementation manner, in the transmission device shown in FIG. 29, the communication module 213 is configured to support the transmission device to perform S301 and S306 in the foregoing embodiment. And / or other processes performed by a transmission device for the techniques described herein.

As another possible implementation manner, in the transmission device shown in FIG. 30, for example, the communication interface 230 supports the transmission device to execute S201 and S206.

As another possible implementation manner, among the apparatus for determining a transmission block size shown in FIG. 30, for example, the communication interface 230 supports the apparatus for determining a transmission block size to perform S301 and S306.

FIG. 31 is a schematic structural diagram of a chip 150 according to an embodiment of the present invention. The chip 150 includes one or more (including two) processors 1510 and an interface circuit 1530.

Optionally, the chip 150 further includes a memory 1540. The memory 1540 may include a read-only memory and a random access memory, and provide operation instructions and data to the processor 1510. A part of the memory 1540 may further include a non-volatile random access memory (NVRAM).

In some implementations, the memory 1540 stores the following elements, executable modules or data structures, or their subsets, or their extended sets:

In the embodiment of the present invention, a corresponding operation is performed by calling an operation instruction stored in the memory 1540 (the operation instruction may be stored in an operating system).

A possible implementation manner is: the terminal and the network device have similar chip structures, and different devices may use different chips to implement their respective functions.

The processor 1510 controls operations of a terminal and a network device. The processor 1510 may also be referred to as a central processing unit (CPU). The memory 1540 may include a read-only memory and a random access memory, and provide instructions and data to the processor 1510. A part of the memory 1540 may further include a non-volatile random access memory (NVRAM). For example, in the application, the memory 1540, the interface circuit 1530, and the memory 1540 are coupled together through a bus system 1520. The bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clarity, various buses are marked as the bus system 1520 in FIG. 31.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1510, or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1510 or an instruction in the form of software. The above-mentioned processor 1510 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or Other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor. A software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540 and completes the steps of the foregoing method in combination with its hardware.

Optionally, the interface circuit 1530 is configured to perform receiving and receiving of terminals and network devices in the embodiments shown in FIG. 9, FIG. 10, FIG. 16, FIG. 17, FIG. 19, FIG. 20, FIG. 22, FIG. 23, and FIG. Sending steps.

The processor 1510 is configured to execute the processing steps of the terminal and the network device in the embodiments shown in FIGS. 9, 10, 16, 17, 19, 20, 22, 23, and 24.

In the above embodiments, the instructions stored in the memory for execution by the processor may be implemented in the form of a computer program product. The computer program product may be written in the memory in advance, or may be downloaded and installed in the memory in the form of software.

A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center via a wired (e.g., Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, a data center, and the like that includes one or more available mediums integrated. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

In one aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the terminal or a chip applied to the terminal executes S102, S103, S104, and S105 in the embodiment. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

On the other hand, a computer storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, the terminal or a chip applied to the terminal executes S202, S203, S204, and S205 in the embodiment. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

In another aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the terminal or a chip applied to the terminal executes S202, S203, S204, and S205 in the embodiment. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

In one aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S101 and S106 in the embodiment. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

On the other hand, a computer storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the network device or a chip applied to the network device executes S201 and S206 in the embodiment. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

In another aspect, a computer storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S301 and S306 in the embodiment. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

The foregoing readable storage medium may include: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

In one aspect, a computer program product including instructions is provided, and the computer program product stores instructions. When the instructions are executed, the terminal or a chip applied to the terminal executes S102, S103, S104, and S105 in the embodiment. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

On the other hand, a computer program product including instructions is provided. When the instructions are executed, the terminal or a chip applied to the terminal executes S202, S203, S204, and S205 in the embodiment when the instructions are executed. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

In yet another aspect, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, the terminal or a chip applied to the terminal executes S302, S303, S304, and S305 in the embodiment. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

In one aspect, a computer program product including instructions is provided, and the computer program product stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S101 and S106 in the embodiment. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

On the other hand, a computer program product including instructions is provided. The computer program product stores instructions, and when the instructions are executed, causes a network device or a chip applied in the network device to execute S201 and S206 in the embodiment. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

In yet another aspect, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S301 and S306 in the embodiment. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

In one aspect, a chip is provided. The chip is used in a terminal. The chip includes one or more (including two) processors and an interface circuit. The interface circuit and the one or more (including two) processors pass The lines are interconnected, and the processor is used to execute instructions to execute S102, S103, S104, and S105 in the embodiment. Alternatively, S302, S303, S304, and S305 in the embodiment are executed. Or execute S202, S203, S204, and S205 in the embodiment. And / or other terminal-performed processes for the techniques described herein.

In another aspect, a chip is provided. The chip is used in a network device. The chip includes one or two or more (including two) processors and interface circuits, and the interface circuit and the one or two or more (including two) processors The processors are interconnected through lines, and the processor is used to run instructions to execute S101 and S106 in the embodiments. Or to perform S201 and S206 in the embodiment. Or to perform S301 and S306 in the embodiment. And / or other processes performed by network devices for the techniques described herein.

In addition, the present application also provides a communication system. The data processing system includes a device for determining a transmission block size as shown in FIGS. 25 to 27 and a transmission device as shown in FIGS. 28 to 30.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center via a wired (for example, Coaxial cable, optical fiber, digital subscriber line (DSL), or wireless (such as infrared, wireless, microwave, etc.) for transmission to another website site, computer, server, or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, and the like that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (solid state disk (SSD)), and the like.

Although the present application is described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and realize the disclosure by looking at the drawings, the disclosure, and the appended claims. Other variations of the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the present application has been described in connection with specific features and embodiments thereof, it is apparent that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to have covered any and all modifications, changes, combinations, or equivalents that fall within the scope of the application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A method for determining a transmission block size, comprising:

The first device obtains a parameter index;

The first device determines a parameter value of a group of parameters corresponding to the parameter index according to the parameter index and a preset mapping relationship; wherein the preset mapping relationship includes at least one index and the at least one A parameter value of a set of parameters associated with each index in the index, the set of parameters including: modulation order, code rate, spreading factor, and number of non-orthogonal multiple access NOMA multiplexing layers;

The first device determines a transmission block size used for communication with the second device according to a parameter value of a set of parameters corresponding to the parameter index.
The method for determining a transmission block size according to claim 1, wherein the set of parameters further comprises: spectral efficiency, the preset mapping relationship includes at least two indexes, and the at least two indexes There are multiple indexes associated with the same spectral efficiency value.
The method for determining a transmission block size according to claim 2, wherein a parameter value of some parameters in a set of parameters corresponding to any two or more indexes of the at least two indexes is different.
The method for determining a transmission block size according to any one of claims 1 to 3, wherein when the terminal uses multiple multiple-input multiple-output MIMO spatial layers for transmission, the first device is The parameter value of a set of parameters corresponding to the parameter index determines the transmission block size used for communication with the second device, including:

The first device according to the parameter value of the number of NOMA multiplexing layers corresponding to the parameter index of each of the multiple MIMO spatial layers, the parameter value of the modulation order, the parameter value of the code rate, and the A parameter value determines a transmission block size for communication with the second device, where a set of parameters corresponding to different MIMO spatial layers are different.
A transmission method, comprising:

The second device sends a parameter index to the first device, where the parameter index is used by the first device to determine a parameter value of a group of parameters corresponding to the parameter index from a preset mapping relationship; wherein the preset mapping The relationship includes at least one index, and a parameter value of a set of parameters associated with each index in the at least one index, the set of parameters includes: modulation order, code rate, spreading factor, and non-orthogonal multiple access NOMA Number of multiplexed layers;

Receiving, by the second device, data sent by the first device according to a parameter value of a set of parameters corresponding to the parameter index.
The transmission method according to claim 5, wherein the set of parameters further comprises: spectrum efficiency, the preset mapping relationship includes at least two indexes, and the at least two indexes are associated with the same frequency spectrum Multiple indices of efficiency values.
The transmission method according to claim 5 or 6, characterized in that, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that it is the same as the second device When the number of first devices communicating on the same time-frequency resource is greater than a first threshold, the parameter index is an index with the lowest number of corresponding NOMA multiplexing layers among the multiple indexes.
The transmission method according to claim 7, wherein the number of NOMA multiplexing layers corresponding to the plurality of indexes is the same, and the number of the same number of NOMA multiplexing layers is corresponding to the plurality of parameter indexes. In the case of the lowest number of NOMA multiplexing layers, the parameter index is the index with the largest expansion factor corresponding to the plurality of indexes.
The transmission method according to claim 5 or 6, characterized in that, when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that it is the same as the second device When the number of first devices communicating on the same time-frequency resource is less than the second threshold, the parameter index is an index with the highest number of corresponding NOMA multiplexing layers among the multiple indexes.
The transmission method according to claim 9, wherein the number of NOMA multiplexing layers corresponding to the plurality of indexes is the same, and the number of the same number of NOMA multiplexing layers is corresponding to the plurality of parameter indexes. In the case of the highest number of NOMA multiplexing layers, the parameter index is the index with the largest expansion factor corresponding to the plurality of indexes.
A device for determining a transmission block size, wherein the device for determining a transmission block size includes:

An obtaining unit for obtaining a parameter index;

A determining unit, configured to determine a parameter value of a group of parameters corresponding to the parameter index according to the parameter index and a preset mapping relationship; wherein the preset mapping relationship includes at least one index and the at least one A parameter value of a set of parameters associated with each index in the index, the set of parameters including: modulation order, code rate, spreading factor non-orthogonal multiple access, and number of NOMA multiplexing layers;

The determining unit is further configured to determine a transmission block size used for communication with the second device according to a parameter value of a set of parameters corresponding to the parameter index.
The device for determining the transmission block size according to claim 11, wherein the set of parameters further comprises: spectral efficiency, the preset mapping relationship includes at least two indexes, and the at least two indexes There are multiple indexes associated with the same spectral efficiency value.
The apparatus for determining the size of a transmission block according to claim 12, wherein the parameter values of some parameters in a set of parameters corresponding to any two or more indexes of the at least two indexes are different.
The apparatus for determining a transmission block size according to any one of claims 11 to 13, wherein the determining unit is further specifically configured to: when the terminal uses multiple MIMO spatial layers for transmission. :

Determine the parameter value from the parameter value of the NOMA multiplexing layer corresponding to the parameter index of each of the multiple MIMO spatial layers, the parameter value of the modulation order, the parameter value of the code rate, and the parameter value of the expansion factor. The size of the transmission block communicated by the second device, wherein a set of parameters corresponding to different MIMO spatial layers is different.
A transmission device, characterized in that the transmission device includes:

A sending unit, configured to send a parameter index to a first device, where the parameter index is used by the first device to determine a parameter value of a group of parameters corresponding to the parameter index from a preset mapping relationship; Let the mapping relationship include at least one index, and a parameter value of a set of parameters associated with each index in the at least one index, the set of parameters includes: modulation order, code rate, spreading factor, and non-orthogonal multiple access Number of incoming NOMA multiplexing layers;

The receiving unit is configured to receive data sent by the first device according to a parameter value of a group of parameters corresponding to the parameter index.
The transmission device according to claim 15, wherein the set of parameters further comprises: spectrum efficiency, the preset mapping relationship includes at least two indexes, and the at least two indexes are associated with the same frequency spectrum Multiple indices of efficiency values.
The transmission device according to claim 15 or 16, wherein when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that it is the same as the second device When the number of first devices communicating on one time-frequency resource is greater than the first threshold, the parameter index is an index with the lowest number of corresponding NOMA multiplexing layers among the multiple indexes.
The transmission device according to claim 17, wherein the number of NOMA multiplexing layers corresponding to the plurality of indexes is the same, and the number of the same number of NOMA multiplexing layers is corresponding to the plurality of parameter indexes. In the case of the lowest number of NOMA multiplexing layers, the parameter index is the index with the largest expansion factor corresponding to the plurality of indexes.
The transmission device according to claim 15 or 16, wherein when there are multiple indexes associated with the same spectral efficiency value in the preset mapping relationship, and the second device determines that it is the same as the second device When the number of first devices communicating on one time-frequency resource is less than the second threshold, the parameter index is an index with the highest number of corresponding NOMA multiplexing layers among the multiple indexes.
The transmission device according to claim 19, wherein the number of NOMA multiplexing layers corresponding to the plurality of indexes is the same, and the same number of NOMA multiplexing layers corresponds to the plurality of parameter indexes. In the case of the highest number of NOMA multiplexing layers, the parameter index is the index with the largest expansion factor corresponding to the plurality of indexes.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer programs or instructions, and when the computer programs or instructions are run on a computer, the computer causes the computer to execute any one of claims 1 to 4 A method for determining a transmission block size according to the item, or a transmission method according to any one of claims 5 to 10.
A chip, characterized in that the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement any one of claims 1 to 4 A method for determining a transmission block size according to one item, or a transmission method according to any one of claims 5 to 10, wherein the interface circuit is configured to communicate with a module other than the chip .