WO2020088185A1

WO2020088185A1 - Communication method and apparatus

Info

Publication number: WO2020088185A1
Application number: PCT/CN2019/109234
Authority: WO
Inventors: 邵家枫; 官磊
Original assignee: 华为技术有限公司
Priority date: 2018-11-02
Filing date: 2019-09-29
Publication date: 2020-05-07
Also published as: CN111147205B; CN111147205A

Abstract

Provided are a communication method and apparatus. The method comprises: when a network device indicates, to a terminal device, information of all layers of first codewords by means of multiple pieces of control information, the number of all the layers corresponding to the first codewords being greater than a first number of the first codewords indicated by any piece of information from among the multiple pieces of control information; and the network device sending the first codewords, and if all modulation symbols corresponding to the first codewords are mapped to all the layers corresponding to the first codewords, the terminal device receiving at least one piece of information from among the multiple pieces of control information, and the terminal device determining information of all the layers, and receiving the first codewords according to the information of all the layers; or the network device sending the first codewords, and if all the modulation symbols corresponding to the first codewords are mapped to the first number of layers, the terminal device receiving the first codewords according to information of the first number of layers corresponding to the first codewords. Thus, a terminal device can receive first codewords when only receiving some pieces of control information from among multiple pieces of control information.

Description

Communication method and device

Cross-reference of related applications

This application requires the priority of the Chinese patent application filed on November 02, 2018, with the application number 201811302948.7 and the application name "a communication method and device", the entire content of which is incorporated by reference in this application.

Technical field

The present application relates to the field of mobile communication technology, and in particular, to a communication method and device.

Background technique

The downlink control information (downlink control information, DCI) is used to indicate the physical downlink shared channel (physical downlink shared channel, PDSCH), such as indicating the time-frequency domain resources occupied by the PDSCH, the modulation method of the PDSCH, etc., so that the terminal device according to the DCI Determine on which time-frequency resources PDSCH is received.

In the new radio access technology (NR), network devices are allowed to send multiple DCIs to terminal devices to indicate the same codeword to be sent, and these DCIs respectively indicate different layers to which the modulation symbols of the codewords are mapped. (layer), the terminal device receives all DCI, can receive the modulation symbols of the codewords on these layers, and further completes the reception of the codewords through demodulation and decoding. However, in the case where some of the DCI is lost, the terminal device cannot receive the codeword, resulting in transmission failure.

Summary of the invention

The present application provides a communication method and apparatus to solve the technical problem that when a network device indicates the same codeword through multiple DCIs, the terminal device cannot receive the codeword according to some of the DCI.

In a first aspect, an embodiment of the present application provides a communication method. When the method is implemented by a terminal device, the terminal device can receive the first information sent by the network device, and the network device sends the first codeword. If the first codeword corresponds to all The modulation symbol is mapped to all layers corresponding to the first codeword, the terminal device determines the information of all layers, and receives the first codeword according to the information of all layers, wherein the first information is used to indicate the first Information of a first number of layers corresponding to a codeword, the first number is less than the number of all layers corresponding to the first codeword, the first number is a positive integer greater than or equal to 1, the number of all layers It is a positive integer greater than or equal to 2. Or, if all the modulation symbols corresponding to the first codeword are mapped to the first number of layers, the terminal device receives the first codeword according to the information of the first number of layers corresponding to the first codeword, where, All modulation symbols corresponding to the first codeword are mapped to the first number of layers.

In the prior art, when the network device indicates different layers of the first codeword through multiple DCIs, the terminal device cannot receive the first codeword according to part of the DCI, for example, in the case where part of the DCI is lost, the terminal device The first codeword cannot be received, so the transmission reliability is low. To solve the technical problem, according to the above solution provided by the embodiment of the present application, the terminal device may receive the first information according to the information of the first number of layers corresponding to the first codeword, or according to the first code Receiving the first codeword of all layers of information corresponding to the word and the first information, where the first information is not information indicating all layers of the first codeword, and therefore, the above solution provided by the embodiments of the present application overcomes the prior art When a network device instructs different layers of the first codeword through multiple DCIs, the terminal device cannot receive the first codeword only according to a part of the DCI, which improves the transmission efficiency of the codeword.

In a possible design, the terminal device may also receive the first configuration information, and then determine the information of the entire layer according to the first configuration information, where the first configuration information is used to indicate the information of the entire layer. Or, if the first information also indicates information of all layers, the terminal device may also determine the information of all layers according to the first information, and the first information is also used to indicate information of all layers . Or the terminal device may also receive second configuration information and determine the information of all layers according to the first information and the second configuration information, where the second configuration information is used to indicate information of multiple all layers , The first information is also used to indicate information of all layers of the plurality of information of all layers. Alternatively, the terminal device may also receive second information, and then determine the information of all layers according to the first information and the second information, where the second information is used to indicate the first codeword Corresponding to the information of the second number of layers, the information of all layers includes the information of the first number of layers and the information of the second number of layers.

According to the above design, the terminal device may determine the information of all layers corresponding to the first codeword, and receive the first information so as to receive the first codeword according to the information of all layers corresponding to the first codeword. It can be understood that, here, the terminal device receives the first codeword according to the information of all layers corresponding to the first codeword and the first information. In the prior art, the terminal device does not have the steps and methods for determining the information of all layers of the first codeword. Therefore, the above design provides a new solution that enables the terminal device to determine the information of all layers, and solves the problem that the terminal device only receives The problem that the first codeword cannot be accurately received when the first information is reached, so as to improve the transmission reliability of the codeword.

In a possible design, when receiving the first codeword according to the information of all layers, the terminal device may determine the index of the layer to which all modulation symbols corresponding to the first codeword are mapped according to the information of all the layers And receive the first codeword according to the index numbers of the layers to which all the modulation symbols are mapped.

The above design provides a solution in which the terminal device receives the first codeword according to the information of all layers. This solution enables the terminal device to receive the first codeword based on the information of all layers corresponding to the first codeword and the first information, and solves the problem that the terminal device cannot accurately receive the first codeword when only the first information is received. Code word transmission reliability.

In a possible design, when determining the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped, the terminal device may determine the first correspondence between the modulation symbol set to which the modulation symbol in the all modulation symbols belongs and the first correspondence Relationship, determining the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped, the first correspondence is included in each modulation symbol set in the all modulation symbols and the information in the all layers Correspondence of layer index numbers.

According to the above, the terminal device can determine the index number of the layer to which all the modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and the first correspondence, which can be used for the terminal The device receives the first codeword, and in the prior art, the terminal device cannot accurately receive the index information of the layer to which all modulation symbols are mapped when receiving only the first information, so that the first codeword cannot be accurately received. Therefore, the above design can Improve the reliability of codeword transmission.

In a possible design, when receiving the first codeword according to the information of the first number of layers, the terminal device may determine the first codeword according to the information of the first number of layers corresponding to the first codeword An index number of a layer to which modulation symbols corresponding to a codeword are respectively mapped, and the terminal device receives the first codeword according to an index number of a layer to which all modulation symbols are respectively mapped.

According to the above design, after receiving the first information, the terminal device may determine the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped respectively according to the information of the first number of layers corresponding to the first codeword. The index number is available Since the terminal device receives the first codeword, in the prior art, the terminal device maps all the modulation symbols corresponding to the first codeword to all layers, so that the terminal device cannot accurately receive all the modulation symbols when receiving only the first information. The index number of the mapped layer. Therefore, the above design allows all the modulation symbols corresponding to the first codeword to be mapped to the layer indicated by each information, so that the terminal device can still accurately receive some of the multiple information. The first code word is received, so the transmission reliability of the code word can be improved.

In a possible design, when determining the index number of the layer to which the modulation symbols corresponding to the first codeword are respectively mapped according to the information of the first number of layers corresponding to the first codeword, the terminal device The index number of the layer to which all modulation symbols corresponding to the first codeword are respectively mapped may be determined according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and a second correspondence. The second correspondence is Correspondence between each modulation symbol set in all the modulation symbols and the index number of the layer included in the information of all the layers.

According to the above design, the terminal device can determine the index number of the layer to which all the modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set and the second correspondence between the modulation symbols in all the modulation symbols, which can be used for the terminal The device receives the first codeword, and in the prior art, the terminal device maps all modulation symbols corresponding to the first codeword to all layers, instead of individually mapping to some layers of all layers, so in the prior art The terminal device does not give a plan to determine the index number, so the above design can still determine the index number of the mapped layer and the mapping order and rules of modulation symbols when the terminal device receives part of the multiple information, thereby The first code word can be received accurately, and the transmission reliability of the code word can be improved.

In a possible design, the first information and the second information satisfy a first condition, and the first condition includes at least one of the following conditions: a hybrid automatic repeat request HARQ process identifier indicated by the first information The same as the HARQ process identifier indicated by the second information; or, the antenna port indicated by the first information is different from the antenna port indicated by the second information; or, the first code indicated by the first information The information of the first number of layers corresponding to the word is different from the information of the second number of layers corresponding to the first codeword indicated by the second information; or, the new data indication information NDI included in the first information The same as the NDI included in the second information; or, the downlink allocation indication information DAI included in the first information is the same as the DAI included in the second information; or, the codeword indication information included in the first information is The codeword indication information included in the second information is the same; or, the time-frequency domain resource indicated by the first information and the time-frequency domain resource indicated by the second information partially overlap or completely overlap.

According to the above design, the terminal device executes the communication method involved when the first condition is met, otherwise, the terminal device does not perform the communication method, so the above design can avoid the terminal device from having to execute this application when receiving any control information The communication method provided in the embodiment makes the system scheduling inflexible, and applying the implicitly-defined method of this first condition can enable the network device to flexibly perform multiple control information indicating the same codeword or multiple control information indicating different codewords. Scheduling selection, and then the terminal device determines the scheduling mode of the network device at this time when the first condition is not satisfied.

In a possible design, the terminal device further receives third configuration information, where the third configuration information, the first information, and the second information satisfy a second condition, and the second condition includes at least one of the following conditions : The third configuration information is used to indicate a first format, the format of the first information and the format of the second information are both the first format; or, the third configuration information is used to indicate the first The wireless network identifier RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI; or, the third configuration information is used to indicate the first set of control resources, so The resource where the first information is located and the resource where the second information is located belong to the first control resource set; or, the third configuration information is used to indicate the first search space, the search where the first information is located The space and the search space where the second information is located are the first search space. Therefore, through the setting of the second condition, another terminal device can execute the communication method involved in the present application when the second condition is satisfied, otherwise, the terminal device does not execute the communication method.

According to the above design, the terminal device executes the communication method involved when the third configuration information, the first information, and the second information satisfy the second condition. Otherwise, the terminal device does not execute the communication method any more. The third configuration information may be Sent by the network device, so that the above design can be flexibly configured by the network device when the terminal device executes the communication method provided by the embodiment of the present application, so as to avoid that the terminal device needs to execute the communication method provided by the embodiment of the present application when receiving any control information The communication method results in inflexible system scheduling, which in turn causes the terminal device to frequently detect such multiple control information and increase power consumption. By applying the implicit limitation of the second condition, the network device can flexibly perform scheduling selection of multiple control information indicating the same code word or multiple control information indicating different code words, and then when the terminal device does not satisfy the second condition , The corresponding detection and control information will not be performed to save power.

In a possible design, the terminal device executes the communication method provided in this application when it is determined that both the first condition and the second condition are satisfied. Or, after determining that one of the first condition or the second condition is satisfied, the terminal device executes the communication method involved in the present application.

According to the above design, it is possible to further flexibly configure when the terminal device executes the communication method provided by the embodiments of the present application to avoid that the terminal device needs to execute the communication method provided by the embodiments of the present application when receiving any control information, resulting in a system The scheduling is not flexible, resulting in a low utilization rate of system resources.

In a possible design, the terminal device may also receive fourth configuration information, where the fourth configuration information is used to indicate that all modulation symbols corresponding to the first codeword are mapped to a first number of layers, and the first A number of layers is a part of the total number of layers to which the modulation symbols corresponding to the first codeword are mapped.

According to the above design, the network device may instruct the terminal device to receive the first codeword according to the information of the first number of layers corresponding to the first codeword. The receiving method of the terminal device, thereby improving the reliability of the code word reception of the terminal device.

In a possible design, the terminal device may also receive fifth configuration information, where the fifth configuration information is used to indicate that all modulation symbols corresponding to the first codeword are mapped to the all layers, and the all layers are The total number of layers to which the modulation symbols corresponding to the first codeword are mapped.

According to the above design, the network device can instruct the terminal device to receive the first codeword according to the information of all layers corresponding to the first codeword, which can realize the flexible configuration of the receiving mode of the terminal device, so that the terminal device can be determined according to the current system situation The receiving method can further improve the codeword receiving efficiency of the terminal device.

In a possible design, the terminal device may also send first notification information, where the first notification information is used to indicate that the terminal device is capable of indicating at least two pieces of information of different layers of the same codeword indicated by the information, Receiving the at least two pieces of information.

According to the above design, the terminal device can inform the network device that it does not support different layers indicating the same codeword through multiple DCIs through the first notification information, so that the network device can learn the capabilities of the terminal device and decide whether to perform the communication provided by the embodiments of the present application Method to avoid sending when the terminal device does not support it, thereby ensuring system transmission efficiency.

In a possible design, the terminal device may also receive sixth configuration information, where the sixth configuration information is used to instruct the terminal device to receive the information when different layers of information of the same codeword indicated by at least two pieces of information respectively At least two messages. According to the above design, after receiving the sixth configuration information, the terminal device may receive the first codeword according to the communication method provided by the embodiment of the present application, and may not receive the first codeword according to the communication method provided by the embodiment of the present application when the sixth configuration information is not received. The first codeword, so that the network device can flexibly configure when the terminal device performs the communication method provided in the embodiments of the present application, so that the receiving method of the terminal device can be determined according to the current system situation, and at the same time, the terminal device can be prevented from receiving any In the case of control, it is necessary to execute the communication method provided by the embodiments of the present application, which causes the power consumption of the terminal device to increase.

In a possible design, the minimum index number of the index numbers of all layers is 0, the number of all layers corresponding to the first codeword is N, and the maximum index number of the index numbers of all layers is N -1, the index numbers of all layers are continuous; or, the information of all layers includes the minimum index number of all layers and the number of all layers corresponding to the first codeword, the The index numbers are continuous; or, the information of all layers includes the maximum index number of all layers and the number of all layers corresponding to the first codeword, and the index numbers of all layers are continuous.

According to the above design, the terminal device can determine the index number of all layers according to the number of all layers, and the index number can be used for the terminal device to receive the first codeword, so that the above design determines the index number of all layers by the number of all layers to reduce the system Signaling overhead can improve system transmission efficiency.

In a possible design, if the number of all layers corresponding to the first codeword is q, the information of all layers includes layer A ₀ , layer A ₁ ..., and layer A _q-1 , where A ₀ , A ₁ ... And A _q-1 are layer index numbers, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is q, and modulation symbols in all modulation symbols corresponding to the first codeword The set includes a first set of modulation symbols and a second set of modulation symbols. The correspondence between each set of modulation symbols in the total modulation symbols and the index number of the layer included in the information of all layers includes: the first modulation symbol The modulation symbols in the set are mapped to layer A ₀ , and the index number of the modulation symbols in the first modulation symbol set is q * i; or, the modulation symbols in the second modulation symbol set are mapped to layer A _q-1 , The index number of the modulation symbol in the second modulation symbol set is q * i + q-1; or, where i is 0 to

, M is the number of all modulation symbols corresponding to the first codeword.

According to the above design, the terminal device can be used to determine the index number of all layers according to the correspondence between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers. The index number can be used for the terminal device to receive the One codeword, so that the terminal device can still learn the mapping method of all modulation symbols through the corresponding relationship when receiving only part of the control information in the multiple control information, so that the first codeword can be received, so the above design Can improve the reliability of codeword transmission.

In a possible design, if the first number is p, the information of the first number of layers includes layer B ₀ , layer B ₁ ... And layer B _p-1 , where B ₀ and B _{1. . . .} And B _p-1 is the index number of the layer, and the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and each modulation symbol set and the Correspondence of the index numbers of the layers included in the information of all layers: when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B ₀ ; or, when p is 2, the first codeword corresponds to All modulation symbols of include the first modulation symbol set and the second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , and the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbols in the second modulation symbol set are mapped to layer B ₁ , the index number of the modulation symbols in the second modulation symbol set is p * i + 1; or, when p is 3, the All modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, and a third modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , the first modulation Modulation in the set of symbols Number of index number p * i, mapping the modulation symbols in the second set of modulation symbols into a layer B _1, index modulation symbols in the second set of modulation symbols for p * i + 1, a second The modulation symbols in the three modulation symbol sets are mapped to layer B ₂ , and the index number of the modulation symbols in the third modulation symbol set is p * i + 2; or, when p is 4, all modulations corresponding to the first codeword The symbols include a first modulation symbol set, a second modulation symbol set, a third modulation symbol set, and a fourth modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , and the first modulation symbol set The index number of the modulation symbol in is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B ₁ , and the index number of the modulation symbol in the second modulation symbol set is p * i + 1, The modulation symbols in the third modulation symbol set are mapped to layer B ₂ , the index number of the modulation symbols in the third modulation symbol set is p * i + 2, and the modulation symbols in the fourth modulation symbol set are mapped the layer B _3, the fourth modulation symbols in the set of modulation symbols The index number p * i + 3; wherein, i is 0 to

According to the above design, the terminal device can conveniently determine the index number of all layers according to the correspondence between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers, which can be used for the terminal device Receiving the first codeword, so that the terminal device can still learn the mapping method of all modulation symbols through the corresponding relationship when receiving only part of the control information in the multiple control information, so that the first codeword can be received, so The above design can improve the reliability of codeword transmission.

In the second aspect, another resource determination method provided by an embodiment of the present application may be implemented by a network device.

The network device may be used to send first information and send a first codeword, where the first information is used to indicate information of a first number of layers corresponding to the first codeword, the first number being less than the first code The number of all layers corresponding to a word, the first number is a positive integer greater than or equal to 1, the number of all layers is a positive integer greater than or equal to 2, and all modulation symbols corresponding to the first codeword are mapped to the all Layers, or all modulation symbols corresponding to the first codeword are mapped to the first number of layers.

In a possible design, the network device further sends second information, the second information indicating information of the second number of layers corresponding to the first codeword.

In a possible design, the network device may also send first configuration information, where the first configuration information is used to indicate the information of all the layers; or, the first information is also used to indicate the entire Layer information; or, the network device sends second configuration information, the second configuration information is used to indicate information of multiple all layers, and the first information is also used to indicate information of the multiple all layers All the layers of information; or, the network device sends second information indicating the information of the second number of layers corresponding to the first codeword, and the information of all layers includes the first Information of a number of layers and information of the second number of layers. Through the above method, the network device can make the terminal device determine the information of all layers corresponding to the first codeword.

In a possible design, when the network device sends the first codeword, if all modulation symbols corresponding to the first codeword are mapped to the all layers, the network device may also send the all layers Information, the information of all layers is used to indicate the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped, and the index of the layer to which all modulation symbols corresponding to the first codeword are mapped respectively Number, sending the first codeword.

In a possible design, the network device may determine the index of the layer to which all modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and the first correspondence relationship No., the first correspondence is a correspondence between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers.

In a possible design, when the network device sends the first codeword, if all modulation symbols corresponding to the first codeword are mapped to the first number of layers, the network device may The information of the first number of layers corresponding to the first codeword, determining the index number of the layer to which the modulation symbols corresponding to the first codeword are respectively mapped, and according to the index number of the layer to which all the modulation symbols are respectively mapped, Sending the first codeword.

In a possible design, the network device may determine the index of the layer to which all the modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set and the second correspondence between the modulation symbols in the all modulation symbols No., the second correspondence is a correspondence between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers.

In a possible design, the network device may also send fourth configuration information, where the fourth configuration information is used to indicate that all modulation symbols corresponding to the first codeword are mapped to a first number of layers, the The first number of layers is the layer to which the modulation symbol corresponding to the first codeword is mapped is a part of the total number of layers. Alternatively, the network device may also send fifth configuration information, where the fifth configuration information is used to indicate that all modulation symbols corresponding to the first codeword are mapped to the all layers, and the all layers are the first codeword The total number of layers to which the corresponding modulation symbol is mapped. Therefore, the network device may instruct the terminal device to receive the first codeword according to the information of the first number of layers through the fourth configuration information, or instruct the terminal device to receive the first codeword according to the information of all layers through the fifth configuration information.

In a possible design, the network device may also receive first notification information, where the first notification information is used to indicate that the terminal device is capable of indicating information of different layers of the same codeword indicated by at least two pieces of information, Receiving the at least two pieces of information. Therefore, after receiving the first notification information, the network device may no longer send the first information to the terminal device, and no longer instruct the terminal device to receive the first codeword according to the communication method provided in the embodiment of the present application.

In a possible design, the sixth configuration information may also be sent, and the sixth configuration information is used to instruct the terminal device to receive the at least two pieces of information of different layers of the same codeword indicated by at least two pieces of information, respectively. Information. Therefore, the network device may instruct the terminal device to receive information of different layers of the same codeword indicated by at least two pieces of information through the sixth configuration information, thereby instructing the terminal device to receive the first codeword according to the communication method provided in the embodiment of the present application.

In a third aspect, an embodiment of the present application provides a communication device that has a function to implement the terminal device behavior in the first aspect or any possible design of the first aspect. The above function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the structure of the communication device may include a storage unit, a receiving unit, and a processing unit. The receiving unit may be used by the communication device to perform the receiving operation related to the terminal device in the first aspect or any possible design of the first aspect, for example, may be used by the communication device to receive the first information and the first corresponding to the first codeword The number of layers of information is received by the first codeword. The communication device may further include a determination unit for performing the determination operation performed by the terminal device in the first aspect or any possible design of the first aspect, such as determining information of all layers corresponding to the first codeword, the receiving unit The first codeword can also be received based on the information of all layers.

According to a fourth aspect, an embodiment of the present application provides another communication apparatus, which has a function to implement the behavior of a network device in the second aspect or the method provided in the second aspect. The above function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the structure of the communication device may include a sending unit and a storage unit. The storage unit can be used to store program instructions. The sending unit may be used by the communication device to perform the sending operation related to the network device in the second aspect or any possible design of the second aspect, for example, may be used by the communication device to send the first information and the first codeword. The communication device may further include a determination unit for performing the determination operation performed by the network device in the second aspect or any possible design of the second aspect, such as determining based on the information of the first number of layers or the information of all layers A layer to which all modulation symbols of the first codeword are mapped separately.

According to a fifth aspect, an embodiment of the present application provides a terminal device having a function that implements the behavior of the terminal device in the first aspect or any possible design of the first aspect. The function can be realized by hardware, or can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. The module may be software and / or hardware.

In a possible design, the structure of the terminal device includes a receiver and a processor, the receiver is configured to support the terminal device to receive the first DRX long period and the second DRX long period configured by the base station for the terminal device, and activate DRX instruction or DRX instruction and other instructions. The processor controls the terminal device to deactivate the DRX indication according to the first DRX long period received by the receiver, or receive the paging in the second DRX long period.

According to a fifth aspect, an embodiment of the present application provides a computer-readable storage medium for storing instructions. When these instructions are called and executed in a computer, the computer may execute the method embodiment described in the first aspect or the second aspect. 1. The functions involved in any possible design of the method embodiments.

According to a sixth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run by a computer, the computer can cause the computer to execute any of the method embodiments of the first aspect or the second aspect or any of the method embodiments The functions involved in a possible design.

According to a seventh aspect, an embodiment of the present application provides a chip that can be coupled to a transceiver and used to implement any one of the possible design methods described in the first aspect or the second aspect or the method embodiments. The functions involved.

According to an eighth aspect, an embodiment of the present application provides a system including the terminal device in the third aspect or any possible design of the third aspect, and the fourth aspect or any possible design of the fourth aspect Network equipment in the.

BRIEF DESCRIPTION

1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application;

2 is a schematic structural diagram of an NR wireless communication system according to an embodiment of the present application;

3 is a schematic structural diagram of a multi-TRP transmission wireless communication system according to an embodiment of the present application;

4 is a schematic flowchart of a communication method provided by an embodiment of the present application;

4A is a schematic flowchart of another communication method according to an embodiment of the present application;

5 is a schematic diagram of a layer mapping method for modulation symbols provided by an embodiment of the present application;

6 is a schematic flowchart of a HARQ feedback provided by an embodiment of this application;

7 is a schematic diagram of another layer mapping method for modulation symbols provided by an embodiment of the present application;

8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

9 is a schematic structural diagram of another communication device according to an embodiment of the present application;

10 is a schematic structural diagram of another communication device according to an embodiment of this application;

FIG. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application.

detailed description

In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be described in further detail below with reference to the accompanying drawings. The specific operation method in the method embodiment may also be applied to the device embodiment or the system embodiment. In the description of the present application, unless otherwise stated, the meaning of "plurality" is two or more.

The following explains the words involved or may be involved in this application:

1. At least one refers to one, or more than one, including one, two, three or more.

2. Carrying, which can mean that a message is used to carry certain information or data, or it can mean that a message is composed of certain information.

3. A channel can refer to a carrier that carries information. For example, the sending end can send a channel, and the receiving end can receive the channel, and then demodulate and decode the information on the channel; the channel can also refer to an uplink or downlink wireless propagation environment. Virtual channel, where the channel is not carrying information, but a virtual propagation path in the physical space.

4. A code word (code, word, CW). In the embodiment of the present application, the code word may also be understood as a transport block (transport block, TB). In the embodiment of the present application, the first codeword may be one or more codewords. For example, the first codeword includes 2 codewords, which is not limited in this application.

5. Modulation symbols. When the data sending end encodes and modulates the data, multiple modulation symbols will be formed. These modulation symbols are the information that carries the encoded data. In this application, all modulation symbols formed after the codeword is encoded and modulated are called all modulation symbols corresponding to the codeword. And, a partial modulation symbol among all the modulation symbols formed after the codeword is encoded and modulated is called a modulation symbol corresponding to the codeword, or a partial modulation symbol corresponding to the codeword.

6. Layers, when transmitting codewords, the modulation symbols corresponding to the codewords can be mapped to different layers through layer mapping, and there is a correspondence between the layers and the antenna ports, so that the modulation symbols can be transmitted through the antenna ports corresponding to the layers . In the embodiment of the present application, the network device may indicate the layer information corresponding to the codeword to the terminal device through DCI, and the terminal device receives the codeword according to the layer information, for example, DCI may inform the number of layers corresponding to the codeword and / or The index number of the layer. It should be understood that, in the embodiments of the present application, a DCI may be used to indicate to the terminal device part of all layers to which all modulation symbols of the codeword are mapped. In this application, all layers to which all modulation symbols of the codeword are mapped are called all layers corresponding to the codeword; some layers of all layers to which all modulation symbols of the codeword are mapped are called corresponding to the codeword The layer, the partial layer corresponding to the codeword, or, according to the number of partial layers, the partial layer is called the Nth number of layers corresponding to the codeword, the Nth number is equal to the number of partial layers, and N is a positive integer. In the embodiment of the present application, the network device may carry information indicating the number of layers and / or information indicating the index number of the layer, and indicate to the terminal device the layer to which the codeword is mapped. For example, the network device may carry the number in the DCI sent to the terminal device to indicate the number of layers to which the codeword is mapped; the DCI may also carry the index number of the layer, such as carrying the index numbers of layer 0, layer 1, and layer 2 Indicates that the codeword is mapped to the three layers of layer 0, layer 1 and layer 2, such as carrying the index numbers of layer 1 and layer 3, indicating that the codeword is mapped to the two layers of layer 1 and layer 3.

The embodiments of the present application will be described in detail below with reference to the drawings. First, the wireless communication system provided by the embodiment of the present application is introduced, then the specific implementation of the communication method provided by the embodiment of the present application is introduced, and finally the equipment and device for performing the communication method provided by the embodiment of the present application are introduced.

As shown in FIG. 1, the wireless communication system 110 provided by the embodiment of the present application may include a terminal device 101 and a network device 102, where the application scenarios of the wireless communication system 110 provided by the embodiment of the present application include but are not limited to the fifth generation (5th Generation, 5G) system. Among them, 5G system can also be called NR system.

Exemplarily, the terminal device 101 may be a terminal (terminal), a mobile station (MS), a mobile terminal (mobile terminal), etc. The terminal device 101 can communicate with one or more networks of one or more communication systems The device communicates and accepts network services provided by the network device. The network device here includes but is not limited to the illustrated network device 102. For example, the terminal device 101 in the embodiment of the present application may be a mobile phone (or referred to as a “cellular” phone), a computer with a mobile terminal, etc. The terminal device 101 may also be portable, pocket-sized, handheld, built-in computer Mobile device The terminal device 101 may also be a communication chip having a communication module.

The network device 102 may include a base station (BS), or include a base station and a radio resource management device for controlling the base station, etc. Specifically, the network device 102 may be a transmission / reception node (TRP), a relay station ( (Or relay equipment), access points, in-vehicle equipment, wearable devices, and base stations in future 5G networks or base stations in future evolved public land mobile network (PLMN) networks, such as NR base stations The embodiments of the present application are not limited.

It should be understood that the above wireless communication system 110 may be applied to an NR scenario. As shown in FIG. 2, an exemplary NR scenario may include a core network 201 of NR, and the NR scenario may also include a new wireless access network 202, where NR Between the core network 201 and the new wireless access network 202 through the interface. In the NR scenario, the functional entities used to implement the communication method involved in the embodiments of the present application may be a base station or a terminal. Specifically, the terminal device 101 involved in the embodiment of the present application may include a terminal device connected to a base station connected to the new wireless access network 202, for example, the terminal device 203 shown in FIG. 2, and the terminal device 203 is connected through a wireless link To the access network base station 204, the access network base station 204 may be a base station in the new wireless access network 202; the terminal device 101 involved in the embodiment of the present application may further include a terminal device connected to the relay, such as that shown in FIG. 2 The terminal device 205 shown, wherein the terminal device 205 is connected to a relay station 206, and the relay station 206 is connected to the access network base station 204 through a relay link. The network device 102 involved in the embodiment of the present application may be the access network base station 204 in the new wireless access network 202 shown in FIG. 2, or may be connected to the access network base station 204 as shown in FIG.的 Relay 站 206.

It should be understood that in the wireless communication system 110 involved in the embodiments of the present application, the number of network devices 102 may be one or more. If the number of network devices 102 is multiple, the number of network devices 102 and terminal devices 101 may TRP transmission method for transmission.

Taking multi-TRP transmission as an example, as shown in FIG. 3, in the multi-TRP transmission mode, multi-TRP transmission can be performed between multiple TRPs with different spatial positions and the terminal device 101 to improve the anti-spatial interference capability of the communication system. Among them, multiple TRPs can be ideal backhauls or non-ideal backhauls. The meaning of ideal backhauls is that there is no delay when interacting information between multiple TRPs, that is, data or control information can be quickly and arbitrarily exchanged at any time; The implication is that there is a delay in the exchange of information between multiple TRPs, that is, information cannot be exchanged quickly and information can only be exchanged slowly.

For example, during multi-TRP transmission from TRP1 and TRP2 to the terminal device 101, the modulation symbol of the first codeword (CW) that needs to be sent to the terminal device 101 can be mapped onto multiple layers, For example, mapping to layer 0, layer 1 and layer 2, where TRP1 can send the first information to the terminal device 101, for example, the first DCI, which is used to instruct to map the modulation symbol of the first CW to layer 0, layer 1, TRP2 The second information can be sent to the terminal device 101, for example, the second DCI, which is used to instruct the mapping of the modulation symbol of the first CW to layer 2, and after receiving the first information and the second information, the terminal device 101 is at layer 0 and layer 1. And layer 2 performs the reception of the modulation symbol of the first CW, and then decodes the first CW.

Taking the wireless communication system 110 shown in FIG. 1 as an example, and as shown in FIG. 4, the communication method provided by the embodiment of the present application may include the following steps:

S101: The network device 102 sends first information to the terminal device 101. The first information is used to indicate the information of the first number of layers corresponding to the first codeword. The first number is smaller than the number of all layers corresponding to the first codeword. The first number is a positive integer greater than or equal to 1, and the number of all layers is a positive integer greater than or equal to 2.

S102: The terminal device 101 receives the first message.

S103: The network device 102 sends a first codeword to the terminal device 101, where all modulation symbols corresponding to the first codeword are mapped to all layers, and S104 is executed.

S104: The terminal device 101 determines information of all layers, and receives the first codeword according to the information of all layers.

FIG. 4A is another embodiment provided by this application, which is different from the embodiment shown in FIG. 4 in that:

S103a: The network device 102 sends a first codeword to the terminal device 101, where all modulation symbols corresponding to the first codeword are mapped to a first number of layers.

S104a: The terminal device 101 receives the first codeword according to the information of the first number of layers corresponding to the first codeword.

In the above embodiment, when the network device 102 indicates the information of all layers of the first codeword to the terminal device 101 through multiple control information (such as multiple DCIs), if the number of all layers corresponding to the first codeword is greater than the The first number of the first codeword indicated by the information. At this time, according to the above method, the terminal device 101 can receive the first information and determine the information of all layers, and then receive the first codeword according to the information of all layers. Wherein, all modulation symbols corresponding to the first codeword are mapped to all layers. It can be understood that the terminal device 101 may also determine the information of all layers before or at the same time when the first information is received. In this embodiment of the present application, the time relationship between the terminal device 101 receiving the first information and determining the information of all layers is No limitation. Or, in S104a, the terminal device 101 receives the first codeword according to the information of the first number of layers corresponding to the first codeword, where all modulation symbols corresponding to the first codeword are mapped to the first number of Floor. Therefore, according to the steps shown in S101, S102, S103a-S104a, the terminal device 101 can realize the reception of the first codeword when receiving only the control information indicating the partial layer corresponding to the first codeword.

It should be understood that in the foregoing embodiment, the first information may be DCI. The first information may be used to indicate the information of the first number of layers, where the information of the layers includes but is not limited to the number of layers or the index number of the layers. As shown in FIG. 5, if the network device 102 maps all modulation symbols (numbered 0 to 5) corresponding to the first codeword to layer 0, layer 1, and layer 2, where the network device 102 uses the first information to If the terminal device 101 indicates layer 0 and layer 1, the first information may carry information indicating that the first number is 2 and information indicating layer 0 and layer 1, or the first information may carry indication layer 0 and layer 1 But does not carry information indicating the first amount. At this time, the terminal device 101 can still determine that the first quantity is 2 according to the information indicating the layer 0 and layer 1, or the first information can carry the information indicating the first quantity of the layer 2. At this time, the terminal device 101 according to the pre-defined or The correspondence between the number of high-level signaling configurations and the index number of the layer determines the index number of the layer corresponding to the information whose first number is 2, such as layer 0 and layer 1.

It should be understood that the present application does not limit the implementation timing of the step of determining the information of all layers in the step shown in S104 above. The above determination step in FIG. 4 is performed after S102 and S103 is only a possible In an implementation manner, the terminal device 101 may also be before the step of sending the first information by the network device 102 shown in S101, or before the step of receiving the first information by the terminal device 101 shown in S102, or may also be on the network shown in S103 Before the step of sending the first codeword by the device 102, the information of all layers is determined, and after receiving the first information, the first codeword is received.

In the embodiment, the terminal device 101 determines the information of all layers corresponding to the first codeword in multiple ways, which will be described below:

Manner 1: The network device 102 indicates to the terminal device 101 the information of all layers through the first configuration information.

The network device 102 may send information indicating all layers, the information of all layers including the number of all layers and / or index numbers indicating all layers, carried in the first configuration information and sent to the terminal device 101. Therefore, after receiving the first configuration information, the terminal device 101 may determine the information of all layers according to the first configuration information. Still taking FIG. 5 as an example, the network device 102 may carry information indicating that the number of all layers is 3 and / or information indicating that the index numbers of all layers are layer 0, layer 1, and layer 2 in the first configuration information and send to Terminal device 101. The network device 102 may send the first configuration information to the terminal device 101 before sending the first information, or may send the first configuration information to the terminal device 101 after sending the prompt of the first information or after sending the first information.

In a specific implementation, the first configuration information may carry all or part of the high-level signaling sent by the network device 102.

The network device 102 may configure the first configuration information to the terminal device 101 for different serving cells. If the network device 102 sends the first configuration information to the terminal device 101, the terminal device 101 may determine the number of all layers according to the first configuration information corresponding to the serving cell where the first codeword is transmitted, so that the network device 102 may cause the terminal device 101 Receive a codeword in the serving cell where the first codeword is transmitted according to the communication method provided by the embodiment of the present application. If the network device 102 does not send the first configuration information to the terminal device 101, the terminal device 101 may no longer receive the codeword according to the communication method provided in the embodiment of the present application in the serving cell where the first codeword is transmitted.

The network device 102 may also set the first configuration information for different hybrid automatic repeat request (HARQ) process identifiers. In this case, the first configuration information sent by the network device 102 may also carry a set of HARQ process identifiers. The network device 102 may carry the HARQ process ID corresponding to the first information in the first information sent to the terminal device 101, or the HARQ process ID corresponding to the first information may also be determined according to a predefined rule. After receiving the first configuration information, the terminal device 101 may determine that the HARQ process identifier carried in the first information belongs to the set of HARQ process identifiers in the first configuration information after receiving the first information. If so, the terminal device 101 uses the information of all layers indicated by the first configuration information as the information of all layers corresponding to the codeword indicated by the first information. Therefore, the network device 102 may indicate through the first configuration information which codewords indicated by the information need to be received by the terminal device 101 according to the communication method provided in the embodiment of the present application when the codewords indicated by the information are transmitted, and the codewords indicated by other information Then, the terminal device 101 does not need to receive the codeword according to the communication method provided in the embodiment of the present application.

The network device 102 may also set first configuration information for the codeword, for example, the first configuration information carries codeword indication information and / or the number of codewords, so that the terminal device 101 determines that the codeword indicated by the first information belongs to After the codeword in the codeword corresponding to the first configuration information, the information of all layers indicated by the first configuration information is used as the information of all layers corresponding to the codeword, and the codeword is performed according to the communication method provided in the embodiment of the present application Reception. For other codewords that are not configured with the first configuration information, the terminal device 101 does not need to receive the codewords according to the communication method provided in the embodiments of the present application. For example, the codeword indication information of the codeword is generally 0 or 1. If the network device 102 carries the codeword indication information 0 in the first configuration information, the terminal device 101 only checks the codeword according to the communication method provided in the embodiment of the present application. The code word whose indication information is 0 is received. For another example, the number of codewords in the codeword is generally 1 or 2, if the network device 102 carries the codeword number 1 in the first configuration information, and the network device 102 sends the codeword indicated by the first information to the terminal device 101 If the number is 1, the terminal device 101 receives the codeword according to the communication method provided in the embodiment of the present application. If the number of codewords indicated by the first information sent by the network device 102 to the terminal device 101 is 2, the terminal device 101 does not need to receive the codewords according to the communication method provided in the embodiment of the present application.

The network device 102 may also set the first configuration information for the DCI, for example, carrying one or more DCI formats in the first configuration information, so that the terminal device 101 determines that the format of the first information belongs to the DCI carried by the first configuration information After the format in the format, the information of all the layers indicated by the first configuration information is used as the information of all the layers corresponding to the codeword indicated by the DCI, and the codeword is received according to the communication method provided in the embodiment of the present application. However, the terminal device 101 does not need to receive the codeword according to the communication method provided in the embodiment of the present application for the first information in the format of the DCI that does not belong to the first configuration information. For example, the DCI format carried in the first configuration information is “format format 1_0”, and after determining that the received first information is DCI in the format “format 1_0”, the terminal device 101 receives the code according to the communication method provided in the embodiment of the present application word. Alternatively, the network device 102 may also carry a radio network identity (RNTI) in the first configuration information, indicating that the first configuration information is set for the DCI scrambled by the RNTI, so that the terminal device 101 will The information of all layers indicated by the first configuration information is used as information of all layers of the codeword corresponding to the DCI scrambled by the RNTI. Alternatively, the network device 102 also indicates the search space where the DCI is located through the first configuration information, indicating that the first configuration information is set for the DCI detected in the search space, thereby causing the terminal device 101 to indicate all the contents indicated by the first configuration information The layer information is used as the information of all layers of the codeword corresponding to the DCI detected in the search space. Or, the network device 102 also indicates the control resource set where the DCI is located through the first configuration information, indicating that the first configuration information is set for the DCI detected in the control resource set, so that the terminal device 101 indicates the first configuration information The information of all the layers of is used as the information of all layers of the codeword corresponding to the DCI detected in the control resource set.

In addition, if the first configuration information includes information indicating the index numbers of all layers, the terminal device 101 may determine the index numbers of all layers according to the received first configuration information. Or, if the correspondence between the number of pre-defined or high-level signaling configurations and the layer index number, that is, the correspondence between the terminal device 101 and the network device 102 has been determined, the network device 102 may only indicate the Quantity. The terminal device 101 may determine the index numbers of all layers based only on the number of all layers. For example, if the minimum value of the index numbers of all layers is 0, and the index numbers of all layers are continuously incremented and are not repeated, the terminal device 101 can determine all index numbers of all layers according to the number of all layers.

Manner 2: The network device 102 indicates to the terminal device 101 the information of all layers through the first information.

The network device 102 may carry information indicating the number of all layers and / or information indicating the index numbers of all layers in the first information. Therefore, after receiving the first information, the terminal device 101 can determine the information of all layers according to the first information. Still taking FIG. 5 as an example, the network device 102 may carry information indicating that the number of all layers is 3 and / or information indicating layer 0, layer 1, and layer 2 in the first information and send it to the terminal device 101.

In a specific implementation, the information indicating the number of all layers and / or the information indicating the index numbers of all layers may be carried in the antenna port bit field in the first information. For example, a column may be added to the information indicated by the existing antenna port bit field, and this column carries information indicating the number of all layers and / or information indicating the index number of all layers. Further, the correspondence between the port number of the reference signal and the layer index number of the predefined or higher layer signaling configuration is predefined. For example, the reference signal port number is the index number of the layer. Taking the antenna port and the reference signal type as 1 and the reference signal occupying a maximum time domain length of 1 symbol as an example, it can be added to the antenna port indication table shown in Table 1. A column of information indicating the number of all layers indicated by the antenna port. It can be understood that there is a corresponding relationship between at least one bit state value in the table and the information of all layers. The correspondence between all bit state values and all layers of information may be configured for high-level signaling or may be pre-defined. The corresponding relationship between the partial bit state value and the information of all layers may be defined in advance and the corresponding relationship of the partial bit state value and the information of all layers may be configured by high-level signaling. It may be that some bit state values do not correspond to information of all layers. It can be understood that a bit state value of 0 and a number of bits of 4 corresponds to a bit state of 0000, a bit state value of 1 and a number of bits of 4 corresponds to a bit state of 0001, that is, the number of bits is m, and the bit state Binary number of m-bit bit state value. In addition, the parameters in Table 1 may be reserved (reserved). When the network device 102 indicates this parameter, it indicates that the network device 102 does not indicate the reception of the same codeword through at least two DCIs, but only indicates the terminal device 101 through one DCI. The reception of the first codeword.

Table 1

It should be understood that, according to an embodiment of the present application, information indicating the number of all layers may be added to other types of antenna port indication tables. For example, the maximum time domain length occupied by the reference signal may also be at the antenna port and the reference signal type is 1. When it is 2 symbols, or the antenna port and reference signal type are 2 and the maximum time domain length occupied by the reference signal is 1 symbol, or the antenna port and reference signal type is 2 and the maximum time domain length occupied by the reference signal is 2 The antenna port indication table for each symbol adds information indicating the number of all layers. For a specific implementation manner, refer to Table 1.

In addition, it should be understood that the embodiments of the present application are not limited to carrying the information indicating the number of all layers and / or the information indicating the index number of all layers in the information indicated by the antenna port bit field in the manner shown in Table 1. The contents of Table 1 are reduced or reorganized, or carry other information corresponding to the bit status value, so as to instruct the terminal device 101 of the information.

In addition, in a specific implementation, the information indicating the number of all layers and / or the information indicating the index number of all layers may also be carried in the first bit field added to the first information, and the length of the first bit field may be 2 bits or 3 bits. For example, as shown in Table 2 and Table 3, the information of all layers can be indicated by the correspondence between the bit state value and the index numbers of all layers.

比特状态值Bit state value	全部层的索引号Index number of all layers
00	0,10,1
11	2,32,3
22	0,1,30,1,3
33	0,1,2,30,1,2,3

Table 2

比特状态值Bit state value	全部层的索引号Index number of all layers
00	0,10,1
11	2,32,3
22	0,30,3
33	0,1,20,1,2
44	0,1,30,1,3
55	0,2,30,2,3
66	1,2,31,2,3
77	0,1,2,30,1,2,3

table 3

It can be understood that the present application is not limited to carrying information indicating the number of all layers and / or information indicating the index numbers of all layers in the first bit field in the manner shown in Table 1, Table 2 or Table 3, or The contents of Table 1 are reduced or reorganized, for example, the first bit field only carries the correspondence between the bit state value and the information indicating the number of all layers, or the bit state value and the information indicating the index number of all layers The corresponding relationship between. In addition, it should be understood that the contents of Table 1, Table 2 or Table 3 may also be supplemented, for example, carrying information specifically indicating the index number of the first number of layers corresponding to the first information.

It should be understood that if the network device 102 carries information indicating the index numbers of all layers in the first information, the terminal device 101 may determine the information of all layers according to the first information after receiving the first information. Or, if the correspondence between the number of pre-defined or high-level signaling configurations and the layer index number, that is, the correspondence between the terminal device 101 and the network device 102 has been determined, the network device 102 may indicate the number of all layers only through the first information In this case, the terminal device 101 may determine the index numbers of all layers only based on the number of all layers.

Manner 3: The network device 102 indicates the information of the plurality of all layers in the second configuration information, and indicates one of the information of the plurality of all layers to the terminal device 101 through the first information.

The network device 102 may carry multiple pieces of information indicating the number of all layers and / or multiple pieces of information indicating the index numbers of all layers or at least one piece of information indicating the number of all layers and at least one piece of information indicating the index number of all layers It is sent to the terminal device 101 in the second configuration information. Before sending the first codeword, the network device 102 sends the first information corresponding to the first codeword to the terminal device 101, where the first information indicates information of all layers in the second configuration information, the terminal device 101 The information of all layers indicated may be used as the information of all layers corresponding to the first codeword.

Specifically, the second configuration information may carry a second configuration information table as shown in Table 4, wherein the second configuration information table may indicate a bit state value in at least one or all of the first information and information between all layers of information Correspondence. The first information sent by the network device 102 may also carry bit status values used to indicate information of all layers, and the terminal device 101 may be in a corresponding relationship indicated by the second configuration information. The number of all layers corresponding to the bit state value indicated by the first information and / or the index number of all layers determine the information of all layers corresponding to the first codeword.

比特状态值Bit state value	第二配置信息配置的全部层的信息Information of all layers configured by the second configuration information
00	第一全部层的信息Information on the first layer
11	第二全部层的信息Information on the second layer
22	第三全部层的信息Information on the third full layer
33	第四全部层的信息Fourth layer information

Table 4

If the first information indicates one of the plurality of all-layer information included in the second configuration information, for example, the first information sent by the network device 102 carries the bit status value "2". After receiving the first information, the terminal device 101 can determine the number of all layers and / or the index number of all layers according to the information of the third all layers in Table 4 whose bit state value is "2". For another example, the first information carries the bit status value “3”, and the terminal device 101 receives the first information, and can determine the number of all layers and / or all the layers according to the information of the fourth all layers whose bit status value is “3” in Table 4. Or the index number of all layers. For another example, the first information carries the number "0", and the terminal device 101 receives the first information, and can determine the number and / or all of the all layers according to the information of the first all layers in Table 4 whose bit status value is "0" The index number of the layer.

Specifically, if the first information indicates one of the index numbers of all layers included in the second configuration information, the terminal device 101 may determine the information of all layers according to the first information and the second configuration information. Take the second configuration information to configure all index numbers including "0,1,2" and "0,1" as an example. If the first information sent by the network device 102 carries the number "2", the terminal device 101 receives the first information and can determine the number of all layers according to the index numbers of all layers with the number "2" in Table X + 2. Or, if the first information indicates one of the numbers of all layers included in the second configuration information. If the correspondence between the number of pre-defined or high-level signaling configurations and the index number of the layer, that is, between the terminal device 101 and the network device 102 is determined, the network device 102 may indicate the number of multiple all layers only through the second configuration information , And indicates one of the numbers of all the multiple layers through the first information, the terminal device 101 may also determine the index number of all the layers according to the number of all the layers.

Manner 4: The network device 102 indicates to the terminal device 101 through the second information the information of the second number of layers corresponding to the first codeword, where all the layer information includes the information of the first number of layers indicated by the first information and Information about the second number of layers.

The network device 102 may also send second information to the terminal device 101, where the second information may indicate information of remaining layers other than the first number of layers in all layers or may indicate information other than the first number of layers in all layers Partial layer information. Therefore, the terminal device 101 may determine the information of all layers according to the information of the first number of layers and the information of the second number of layers indicated by the first information. The second information may be one or more DCIs other than the first information. Specifically, the method of indicating the information of the second number of layers in the second information may refer to the method of indicating the information of the first number of layers in the first information.

Still taking FIG. 5 as an example, the network device 102 maps all modulation symbols corresponding to the first codeword, for example, modulation symbol 1 to modulation symbol 6, to layer 0, layer 1, and layer 2. The network device 102 indicates to the terminal device 101 that the first number of layers are layer 0 and layer 1 (that is, the first number is 2) in the first information, and the network device 102 may also indicate the layer 2 to the terminal device 101 through the second information . Optionally, the terminal device 101 may also determine that the second quantity indicated by the second information is 1. According to this, the terminal device 101 can determine that the number of all layers to which all modulation symbols corresponding to the first codeword are mapped is 3 according to the first information and the second information.

In addition, in an embodiment, the correspondence between the number of high-level signaling configurations and the index number of the layer may be defined in advance, that is, the correspondence between the terminal device 101 and the network device 102 has been determined. The network device 102 indicates the first number through the first information and the second number through the second information. The terminal device 101 may also determine the number of all layers according to the first number and the second number. Furthermore, the terminal device 101 determines the index numbers of all layers according to the number of all layers.

It should be understood that the embodiment of the present application does not limit the network device 102 to indicate all layer information to the terminal device 101 through the first information and the second information, and the network device 102 may also use the first information, the second information, and at least one other control information. (For example, DCI), the information of all the layers is indicated to the terminal device 101, so that the terminal device 101 can use the result of the addition operation of the information of all the layers indicated by the DCI corresponding to the received first codeword as the information of all the layers. Among them, the first information, the second information, and at least one other control information should satisfy the first condition.

In a possible implementation manner, the correspondence between the number of pre-defined or high-level signaling configurations and the index number of the layer, when the terminal device 101 determines the information of all layers, the terminal device 101 determines all through the correspondence and the number of all layers The index number of the layer. Specifically, the minimum index number of all layer index numbers is 0, the number of all layers corresponding to the first codeword is N, the maximum index number of all layer index numbers is N-1, and the index numbers of all layers It is continuous and incremental. For example, if the terminal device 101 determines that N is 4, it can determine the index numbers of all layers as layer 0, layer 1, layer 2, and layer 3 according to the above sorting method. Optionally, the index numbers of all layers are continuously decremented, or discontinuously incremented, or discontinuously decremented, which is not limited in this embodiment.

In another possible implementation manner, the correspondence between the number of high-level signaling configurations and the layer index number may be predefined. The network device 102 may also indicate the information of all layers to the terminal device 101 for the terminal device 101 to determine the information of all layers. The information of all layers may include one or more of the index numbers of all layers, and / or, the first code The number of all layers corresponding to the word. For example, the network device 102 may carry all layer information in the foregoing first configuration information or the first information. Alternatively, the network device 102 may carry the second number of layers of information in the second information, and the terminal device 101 determines the information of all layers according to the first number of layers of information and the second number of layers of information.

In addition, the information of all layers may include the minimum index number and the number of all layers corresponding to the first codeword, and the index numbers of all layers are continuous and incremental. Optionally, the index numbers of all layers are continuously decremented, or discontinuously incremented, or discontinuously decremented, which is not limited in this embodiment. For example, the number N of all layers is 3, and the smallest index number in all layers is 1, so that the index numbers of all layers can be determined as layer 1, layer 2, and layer 3. The terminal device determines other index numbers than the minimum index number among the index numbers of all layers according to the minimum index number and the number of all layers corresponding to the first codeword.

Alternatively, the information of all layers may include the maximum index number of all layers and the number of all layers corresponding to the first codeword, and the index numbers of all layers are continuous and incremental. Optionally, the index numbers of all layers are continuously decremented, or discontinuously incremented, or discontinuously decremented, which is not limited in this embodiment. For example, the number N of all layers is 3, and the maximum index number in all layers is 3, so that the index numbers of all layers can be determined as layer 1, layer 2, and layer 3. The terminal device determines other index numbers than the largest index number among the index numbers of all layers according to the maximum index number and the number of all layers corresponding to the first codeword.

In implementation, after receiving the first information and the second information, the terminal device 101 may receive the first codeword through the communication method provided in the embodiment of the present application when it is determined that the specific condition is satisfied.

Specifically, the specific condition includes the first condition and / or the second condition.

It should be understood that, according to the method provided in the embodiment of the present application, if the first information and the second information respectively indicate different layers to which the modulation symbols corresponding to the first codeword are mapped, the terminal device 101 may use the communication method provided in the embodiment of the present application Receive the first codeword. The terminal device 101 can determine whether the codeword indicated by both the first information and the second information is the first codeword according to the first condition. If the first condition is satisfied, it means that both the first information and the second information indicate the first Codeword, otherwise, it means that the first information and the second information indicate different codewords respectively, and the codeword is not received according to the method provided in the embodiment of the present application.

The first condition is introduced below by way of example. The first condition may include at least one of the following multiple conditions:

First, the time-frequency domain resources indicated by the first information and the time-frequency domain resources indicated by the second information partially overlap or all overlap.

In order to save downlink system resources, since it is a codeword transmission, in general, the time-frequency domain resources occupied by the transmission of different layers of the same codeword partially overlap or overlap completely, for example, time-domain resources and frequency-domain resources overlap. Therefore, if there is no overlap in the time-frequency resources indicated by the first information and the second information, it means that the first information and the second information indicate different codewords, respectively, and transmit different information. Therefore, if the terminal device 101 determines that the time-frequency domain resource indicated by the first information and the time-frequency domain resource indicated by the second information partially overlap or overlap. The terminal device 101 may receive the codeword according to the communication method provided by the embodiment of the present application; otherwise, the terminal device 101 does not receive the codeword according to the communication method provided by the embodiment of the present application.

Second, the HARQ process ID of the hybrid automatic repeat request indicated by the first information is the same as the HARQ process ID indicated by the second information.

In NR, the same HARQ process ID indicates the same data buffer. Therefore, if the time-frequency resource indicated by the first information overlaps with the time-frequency resource indicated by the second information (including full overlap or partial overlap), the HARQ process ID indicated by the first information and the HARQ process ID indicated by the second information When they are the same, it can be explained that the first information and the second information respectively indicate different layers corresponding to the first codeword. At this time, the terminal device 101 may receive the codeword according to the communication method provided by the embodiment of the application, otherwise, the terminal device 101 does not receive the codeword according to the communication method provided by the embodiment of the application.

Third, the antenna port indicated by the first information is different from the antenna port indicated by the second information.

In NR, demodulation reference signals (DMRS) corresponding to different antenna port numbers correspond to different precoding matrices. DMRS corresponding to different antenna port numbers may also correspond to time-frequency resources of different DMRS. There may also be a correspondence between different antenna port numbers and layer index numbers. Therefore, when the time-frequency domain resource indicated by the first information overlaps with the time-frequency domain resource indicated by the second information, when the antenna port indicated by the second information is different from the antenna port indicated by the first information, it indicates The codewords indicated by the first information and the second information are the same codeword, and at this time, the terminal device 101 receives the codeword according to the communication method provided by the embodiment of the present application. If the antenna port indicated by the second information is the same as the antenna port indicated by the first information, the terminal device 101 may not receive the codeword according to the communication method provided in the embodiment of the present application.

Fourth, the information of the first number of layers corresponding to the first codeword indicated by the first information is different from the information of the second number of layers corresponding to the first codeword indicated by the second information.

The information of the layer may include the index number of the layer, and the terminal device 101 may determine the information of these layers when the codeword is mapped to different layers. In the case where the time-frequency domain resource indicated by the first information overlaps with the time-frequency domain resource indicated by the second information, if the index number of the layer corresponding to the first codeword indicated by the first information is The index numbers of the layers corresponding to a codeword are the same, indicating that the first information and the second information indicate different codewords, respectively. At this time, the terminal device 101 does not receive the codeword according to the communication method provided in the embodiment of the present application. Conversely, if the index number of the layer corresponding to the first codeword indicated by the first information is not the same as the index number of the layer corresponding to the first codeword indicated by the second information, the terminal device 101 may communicate according to the embodiments of the present application Method to receive codeword.

Fifth, the new data indication information (new data indicator (NDI) included in the first information is the same as the NDI included in the second information.

The new data indication information in DCI can be used to indicate whether the data indicated by DCI is the first transmission data, NDI can be 0 or 1, for example, when the first transmission NDI is 0, and the second transmission NDI is 1 Indicates that the data is the retransmitted data of the first transmission. It can be understood that if the NDI included in the first information is different from the NDI included in the second information, it means that the first information and the second information indicate different codewords or retransmissions of the same codeword, respectively. At this time, the terminal device 101 does not receive the codeword according to the communication method provided in the embodiment of the present application. If the NDI included in the first information is the same as the NDI included in the second information, the terminal device 101 may receive the codeword according to the communication method provided in the embodiment of the present application.

Sixth, the downlink allocation indication information (DAI) included in the first information is the same as the DAI included in the second information.

DCI may include count DAI (count downlink assignment indicator, C-DAI) and / or total DAI (total count downlink assignment indicator, T-DAI). The value of C-DAI is 1, 2, 3, or 4, T-DAI The value can be 1, 2, 3, or 4.

When the first information and the second information only include C-DAI, if the C-DAI included in the first information is the same as the C-DAI included in the second information, it means that the codewords indicated by the first information and the second information are the same Codeword. The terminal device 101 may receive the codeword according to the communication method provided by the embodiment of the present application. Otherwise, the terminal device 101 does not receive the codeword according to the communication method provided in the embodiment of the present application.

When the first information and the second information only include T-DAI, if the T-DAI included in the first information is the same as the T-DAI included in the second information, it means that the codewords indicated by the first information and the second information are the same numbers. The terminal device 101 may receive the codeword according to the communication method provided by the embodiment of the present application. Otherwise, the terminal device 101 does not receive the codeword according to the communication method provided in the embodiment of the present application.

When both the first information and the second information include C-DAI and T-DAI, if the first information includes the same C-DAI and the second information includes the C-DAI, and the first information includes the T-DAI and the second information If the T-DAI included in the second information is the same, it means that the codewords indicated by the first information and the second information are the same codeword. The terminal device 101 may receive the codeword according to the communication method provided by the embodiment of the present application. Otherwise, if the C-DAI included in the first information is different from the C-DAI included in the second information, or the T-DAI included in the first information is different from the T-DAI included in the second information, the terminal device 101 is not implemented according to this application The communication method provided in the example receives the codeword.

Seventh, the codeword indication information included in the first information is the same as the codeword indication information included in the second information.

The code word indicates that the information is 0 or 1. If the codeword indication information included in the first information is the same as the codeword indication information included in the second information, it means that the codewords indicated by the first information and the second information are the same codeword. At this time, the terminal device 101 may receive the codeword according to the communication method provided by the embodiment of the present application. If the codeword indication information included in the first information is different from the codeword indication information included in the second information, the terminal device 101 does not receive the codeword according to the communication method provided in the embodiment of the present application.

It should be understood that the setting of the first condition above is only an example, and this application does not limit one of the above conditions as the first condition, and a combination of multiple conditions in the above conditions may also be used as the first condition. For example, the above The first condition and the combination of the second condition, the third condition, the fourth condition, the fifth condition, the sixth condition, or the seventh condition as the first condition, or the combination of all the above conditions as The first condition, so that when the first information and the second information satisfy all the above conditions, the terminal device 101 receives the first codeword according to the communication method provided by the embodiment of the present application.

In addition, the terminal device 101 may also receive third configuration information and determine whether the third configuration information, the first information, and the second information satisfy the second condition. When the second condition is met, the terminal device 101 may The communication method provided by the embodiment of the application receives the first codeword, otherwise, the first codeword is not received according to the communication method provided by the embodiment of the application. The third configuration information may be sent by the network device 102, so that the network device 102 may also use the third configuration information to control whether the terminal device 101 receives the first codeword according to the communication method provided in the embodiment of the present application.

The following describes the second condition by way of example. The second condition may include at least one of the following multiple conditions:

First, the third configuration information is used to indicate a first format, and the format of the first information and the format of the second information are both the first format.

For example, the third configuration information may indicate the DCI format 1_1. When only the first information and the second information are DCI in the 1_1 format, the terminal device 101 determines that the second condition is satisfied. The third configuration information may carry information of a DCI format 1_1 to indicate the DCI format of the first information and the second information. According to this, the network device 102 may instruct the terminal device 101 to determine whether to perform codeword reception according to the communication method provided in the embodiment of the present application according to the format of the first information and the second information.

Second, the third configuration information is used to indicate the first RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI.

For example, if the third configuration information indicates the first RNTI, the terminal device 101 implements the terminal device 101 according to this application only if it is determined that the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI The communication method provided in the example performs codeword reception. According to this, the network device 102 may instruct the terminal device 101 to determine whether to perform codeword reception according to the communication method provided in the embodiment of the present application according to the RNTI scrambling the first information and the RNTI scrambling the second information.

Third, the third configuration information is used to indicate a first control resource set (control-resource set, CORESET). The resource where the first information is located and the resource where the second information is located belong to the first control resource set .

The network device 102 may also indicate the first control resource set through the third configuration information, then the terminal device 101 determines that the resource where the first information is located and the resource where the second information is located belong to the first control resource set, according to the present application The communication method provided by the embodiment performs the reception of a code word. Otherwise, the codeword is not received according to the method provided in the embodiments of the present application.

Fourth, the third configuration information is used to indicate a first search space, and the search space where the first information is located and the search space where the second information is located are the first search space.

The network device 102 may also indicate the first search space through the third configuration information. The terminal device 101 only provides the search space where the first information and the second information belong to the first search space, according to the embodiment of the present application. Of the communication method performs codeword reception; otherwise, codeword reception is not performed according to the method provided in the embodiments of the present application.

It should be understood that the setting of the above second condition is only an example, and this application does not limit one of the above conditions as the second condition, and may also use a combination of multiple conditions in the above condition as the second condition. For example, the combination of all the above conditions is used as the second condition. When the third configuration information, the first information, and the second information satisfy all the above conditions, the terminal device 101 receives the codeword according to the communication method provided in the embodiment of the present application.

In addition, it should be understood that in the embodiments of the present application, the above first condition and second condition may be set separately, for example, when the terminal device 101 meets the first condition, the codeword may be received according to the communication method provided by the embodiment of the present application, or the terminal When the device 101 meets the second condition, it can receive the codeword according to the communication method provided in the embodiment of the present application. The first condition and the second condition can also be set at the same time, so that the terminal device 101 only receives the codeword according to the communication method provided in the embodiment of the present application when the first condition and the second condition are satisfied at the same time.

In implementation, if the terminal device 101 receives the first information and the second information, where the first information and the second information respectively indicate different layers of the first codeword, the terminal device 101 may perform the decoding result of the first codeword HARQ feedback, instead of performing HARQ feedback for the first information and the second information separately to save signaling overhead. Specifically, the terminal device 101 may send an acknowledgement (acknowledgment, ACK) message to the network device 102 after successfully receiving the first information and the first codeword indicated by the second information, otherwise, if the terminal device does not successfully receive the first code Word, send negative acknowledgement (NACK) information to the network device 102.

As shown in FIG. 6, an embodiment of the present application provides a HARQ feedback method. The method includes the following steps:

S201: The network device 102 sends the first information and the second information to the terminal device 101, where the first information is used to indicate the first number of layers corresponding to the first codeword, and the second information is used to indicate the corresponding to the first codeword Second number of layers;

S202: The terminal device 101 receives the first information and the second information;

S203: The terminal device 101 determines that the first information and the second information indicate different layers of the first codeword; here, the terminal device 101 may determine the first information and the second information indication after determining that the first condition and / or the second condition are satisfied For the different layers of the first codeword, the setting of the first condition and the second condition can refer to the description in the previous chapter;

S204: The terminal device 101 sends HARQ feedback information to the network device 102 according to the decoding result of the first codeword, and no longer sends HARQ information for the first information and the second information separately; wherein, if the terminal device 101 successfully receives the first code Word, the HARQ information includes ACK information, otherwise, if the terminal device 101 does not successfully receive the first codeword, the HARQ feedback information includes NACK information.

Therefore, according to the above method, when receiving multiple indication DCIs and multiple DCIs indicating different layers of the same codeword, the terminal device 101 can feed back HARQ information corresponding to the number of codewords according to the decoding result of the codeword, for example If the number of codewords is 1, the HARQ information is one. For example, if the number of codewords is two, the HARQ information is two, avoiding separately feeding back HARQ information for multiple DCIs, to save uplink feedback signaling, and improve the transmission accuracy of HARQ information. It should be understood that the first information and the second information in the above example may also be sent to the terminal device 101 by multiple TRPs in multi-TRP transmission, for example, as shown in FIG. 3, the terminal device 101 may also receive the TRP1 After the first information and the second information sent by TRP2, the steps shown in S202 to S204 are performed.

In addition, it should be understood that the number of bits in one HARQ message here may be 1 bit or C bits. If the terminal device is not configured with HARQ feedback corresponding to the code block group, the number of bits in one HARQ message is 1 bit. If the terminal device is configured with HARQ feedback corresponding to the code block group, and the number of code blocks including the code block group is C, then the number of bits in one HARQ message is C bits.

Optionally, if the terminal device is configured as dynamic HARQ codebook feedback HARQ by the network device, the terminal device uses the method in this embodiment to determine the number of HARQ feedback information bits. If the terminal device is configured by the network device as semi-static HARQ codebook feedback HARQ, the terminal device does not need to determine the number of bits of HARQ feedback information using the method in this embodiment.

In the embodiment of the present application, when the network device 102 sends the first codeword, if all modulation symbols corresponding to the first codeword are mapped to all layers, and all layers are sent to the terminal device 101 through the first configuration information or the first information Information, or send the second information to the terminal device 101, so that the terminal device 101 determines the information of all layers based on the first information and the second information, where the information of all layers includes the index number of all layers, after which the terminal device 101 may The index number of the layer to which all modulation symbols corresponding to the first codeword are mapped is determined according to the information of all layers, and then the first codeword is received according to the index number of the layer to which all modulation symbols are respectively mapped.

In the above process, the network device 102 may determine the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped according to the information of all layers, and then map all modulation symbols separately according to the index number of the layer to which all modulation symbols are mapped To the floor.

Exemplarily, when determining the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped respectively according to the information of all layers, the network device 102 and the terminal device 101 may first determine the modulation symbol set to which each modulation symbol belongs and determine The first correspondence, then, according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and the first correspondence, the index number of the layer to which each modulation symbol is mapped is determined, where the first correspondence is The correspondence between each modulation symbol set and the index number of the layer included in the information of all layers.

Among them, the number of all layers corresponding to the first codeword is q, and the information of all layers includes layer A ₀ , layer A ₁ … and layer A _q-1 , where A ₀ , A ₁ … and A _q-1 are layer Index number, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is q, and the modulation symbol set among all modulation symbols corresponding to the first codeword includes the first modulation symbol set and the second modulation symbol set. A correspondence may include:

The modulation symbols in the first modulation symbol set are mapped to layer A ₀ , and the index number of the modulation symbols in the first modulation symbol set is q * i;

The modulation symbols in the second modulation symbol set are mapped to layer A _q-1 , and the index number of the modulation symbols in the second modulation symbol set is q * i + q-1;

Where i is from 0 to

Integer, M is the number of all modulation symbols corresponding to the first codeword; or, i is from 0 to

, M is the number of all modulation symbols corresponding to the first codeword,

Indicate right

Perform round-up operation; or i is 0 to

It means rounding up M / q.

Still taking FIG. 5 as an example, when all modulation symbols (numbered 0 to 5) corresponding to the first codeword are mapped to layer 0, layer 1, and layer 2, at this time, M = 6, q = 3, i = 0,1, according to the above method, the network device 102 and the terminal device 101 can determine that the number of all layers corresponding to the first codeword is 3, and the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is 3. The modulation symbols in the first modulation symbol set are mapped to layer 0, the modulation symbols in the first modulation symbol set include modulation symbol 0 and modulation symbol 3, and the modulation symbols in the second modulation symbol combination are mapped to layer 2, the second The modulation symbols in the modulation symbol set include modulation symbol 2 and modulation symbol 5. It can be understood that when q is greater than 2, other q-2 symbol sets are mapped to modulation symbols mapped to layer A _q-1-x , and the index number of the modulation symbol in the xth modulation symbol set is q * i + x-1, this application will not repeat them.

In the embodiment of the present application, when the network device 102 sends the first codeword, if all the modulation symbols corresponding to the first codeword are mapped to the first number of layers, the terminal device 101 may determine the first number according to the information of the first number of layers An index number of a layer to which all modulation symbols corresponding to a codeword are mapped, and then a first codeword is received according to the index number of the layer to which all modulation symbols are mapped.

In the above process, the network device 102 may determine the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped according to the information of the first number of layers, and then, according to the index number of the layer to which all modulation symbols are respectively mapped Symbols are mapped to layers respectively.

Specifically, when determining the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped respectively according to the information of the first number of layers, the network device 102 and the terminal device 101 may first determine the modulation symbol set to which each modulation symbol belongs And determining the second correspondence, and then, according to the modulation symbol set and the second correspondence between the modulation symbols in all modulation symbols, determine the index number of the layer to which each modulation symbol is mapped, where the first correspondence is among all modulation symbols Correspondence between each modulation symbol set and the index number of the layer included in the information of all layers.

Exemplarily, if the first number indicated by the first information (that is, the number of the first number of layers corresponding to the first codeword) is p, the information of the first number of layers includes layer B ₀ , layer B ₁ ..., and layers B _p-1 , where B ₀ and B _{1. . . .} And B _p-1 is the index number of the layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and the second correspondence may include:

When p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B ₀ ; or,

When p is 2, all modulation symbols corresponding to the first codeword include the first modulation symbol set and the second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , and the modulation in the first modulation symbol set The index number of the symbol is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B ₁ , and the index number of the modulation symbol in the second modulation symbol set is p * i + 1; or,

When p is 3, all modulation symbols corresponding to the first codeword include the first modulation symbol set and the second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , and the modulation in the first modulation symbol set The index number of the symbol is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B ₁ , the index number of the modulation symbol in the second modulation symbol set is p * i + 1, and the index in the third modulation symbol set The modulation symbol is mapped to layer B ₂ , and the index number of the modulation symbol in the second modulation symbol set is p * i + 2; or,

When p is 4, all modulation symbols corresponding to the first codeword include the first modulation symbol set and the second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , and the modulation in the first modulation symbol set The index number of the symbol is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B ₁ , the index number of the modulation symbol in the second modulation symbol set is p * i + 1, and the index in the third modulation symbol set The modulation symbols are mapped to layer B ₂ , the index of the modulation symbols in the second modulation symbol set is p * i + 2, the modulation symbols in the third modulation symbol set are mapped to layer B ₃ , and the modulation in the second modulation symbol set The index number of the symbol is p * i + 3;

Where i is from 0 to

, M is the number of all modulation symbols corresponding to the first codeword; or, i is from 0 to

Indicate right

Perform round-up operation; or i is 0 to

Means rounding up M / p.

It should be understood that the above second correspondence relationship is only an example, and this application does not limit p to take 1, 2, 3, or 4, p may also be an integer greater than 4.

As shown in FIG. 7, if the first number of layers are layer 0 and layer 1, the modulation symbols corresponding to the first codeword map all modulation symbols (numbered 0 to 5) corresponding to the first codeword to layer 0 And layer 1, at this time M = 6, p = 2, i = 0, 1, 2, according to the above method, the network device 102 and the terminal device 101 can determine that the number of all layers corresponding to the first codeword is 2 , The number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is 2, the modulation symbols in the first modulation symbol set are mapped to layer 0, and the modulation symbols in the first modulation symbol set include modulation symbol 0 and modulation symbol 2 and modulation symbol 4, the modulation symbols in the second modulation symbol combination are mapped to layer 1, and the modulation symbols in the second modulation symbol set include modulation symbol 1, modulation symbol 3, and modulation symbol 5.

When at least two DCIs indicate transmission of different layers of the first codeword, then all modulation symbols of the first codeword are layer-mapped for each of the at least two DCIs. It can be understood that all the modulation symbols of the first codeword are mapped on the layer indicated by each DCI, so the implementation in this embodiment is applied so that the terminal device can still receive all the signals when only one DCI is received. Modulation symbol to improve the accuracy of information reception.

Exemplarily, if the index number of the layer indicated by the second information is layer 2 shown in FIG. 6, the network device 102 may also map all modulation symbols to layer 2, and indicate layer 2 to the terminal device 101 through the second information. Therefore, after receiving the first information and the second information, the terminal device 101 can perform joint reception of the first codeword at layer 0, layer 1, and layer 2 according to the first information and the second information, thereby further improving transmission efficiency. The joint reception may be to combine all the modulation symbols of the first codeword on the first number of layers indicated by the first information with all the modulation symbols of the first codeword on the second number of layers indicated by the second information, and then perform Data demodulation and decoding, or may be a code sequence obtained by demodulating all the modulation symbols of the first codeword on the first number of layers indicated by the first information and the second number on the second number of layers indicated by the second information The code sequences after demodulation of all modulation symbols of one code word are combined, and then data decoding is performed.

Optionally, the mapping of all modulation symbols of the first codeword to the first number of layers may also be determined according to Table 5. among them,

Is the number of all modulation symbols of the first codeword, d ⁽⁰⁾ (i) is the i-th modulation symbol before layer mapping, where i is the index number of the modulation symbol, and x ^(A0) (i) is the layer mapping Then map to the i-th modulation symbol of layer A ₀ , i is greater than or equal to 0 and less than or equal to

Count value of.

table 5

Optionally, the mapping of all modulation symbols of the first codeword to the first number of layers and the mapping of all modulation symbols of the first codeword to the second number of layers may also be determined according to Table 6. among them,

Is the number of all modulation symbols of the first codeword, d ⁽⁰⁾ (i) is the i-th modulation symbol before layer mapping, where i is the index number of the modulation symbol, and x ^(A0) (i) is the layer mapping Then mapped to the i-th modulation symbol of layer A ₀ , x ^(B0) (i) is the i-th modulation symbol mapped to layer B ₀ after layer mapping, i is greater than or equal to 0 and less than or equal to

Count value of. It can be understood that when the network device sends the first information and the second information, before sending the first codeword, the network device needs to perform layer mapping of the two information on the first codeword separately.

Table 6

In the embodiment of the present application, the network device 102 may also control whether the terminal device 101 executes the communication method provided by the embodiment of the present application through configuration information.

Exemplarily, the network device 102 may also send fourth configuration information to the terminal device 101 to indicate that the layer to which all modulation symbols corresponding to the first codeword indicated by the first information are mapped is a partial layer in the total number of layers . Therefore, after receiving the fourth configuration information, the terminal device 101 may determine that the first number is less than the number of all layers according to the fourth configuration information, and then the terminal device 101 may follow the step shown in S103 according to the first number corresponding to the first codeword Receive the first codeword for the layer information.

Exemplarily, the network device 102 may also send fifth configuration information to the terminal device 101 to indicate that all modulation symbols corresponding to the first codeword indicated by the first information are mapped to all layers, so that the terminal device 101 After receiving the fifth configuration information, the information of all layers is determined, and the codewords are received on all layers according to the information of all layers. For example, the terminal device 101 can receive the first codeword according to the information of all layers according to the step shown in S103a .

Exemplarily, the network device 102 may also send sixth configuration information to the terminal device 101 for instructing the terminal device to receive the at least two pieces of information when different layers of information of the same codeword indicated by the at least two pieces of information respectively. Thus, the network device 102 can control the terminal device 101 to receive the same codeword according to at least two pieces of information, for example, the terminal device 101 can receive the first code according to the first number of layers of information corresponding to the first codeword according to the step shown in S103 word. In the case where the terminal device 101 does not receive the sixth configuration information or the configuration information is used to instruct the terminal device to use different codewords indicated by at least two pieces of information, the terminal device 101 does not use the communication method provided in the embodiment of the present application Receive codeword.

It should be understood that the network device 102 may send the above fourth configuration information, fifth configuration information or sixth configuration information to the terminal device 101, and may also send the fourth configuration information, fifth configuration information and sixth configuration information to the terminal device 101 Part of the configuration information, such as sending fourth configuration information and sixth configuration information, or sending fifth configuration information or sixth configuration information.

In addition, in implementation, the terminal device 101 may also report to the network device 102 whether it supports multiple control information (such as DCI) for the same codeword. For example, the terminal device 101 may send the first notification information to the network device 102 to instruct the terminal The device 101 can receive at least two pieces of information of different layers of the same codeword indicated by at least two pieces of information, so that the network device 102 can send a message to the terminal after receiving the first notification information sent by the terminal device 101 The device 101 sends the first information and / or the second information, and the terminal device 101 receives the first codeword according to the communication method provided in the embodiment of the present application. For example, the terminal device 101 may correspond to the first codeword according to the step shown in S103 For the first number of layers of information, receive the first codeword. Otherwise, when the network device 102 does not receive the first notification information sent by the terminal device 101 or the terminal device 101 reports that it does not support multiple control information for the same codeword, the network device 102 may not send the first notification information to the terminal device 101 Information, at this time, the terminal device 101 does not execute the communication method provided in the embodiment of the present application. Optionally, multiple pieces of control information here need to satisfy the first condition and / or the second condition. For the description of the first condition and the second condition, please refer to the foregoing, which will not be repeated here.

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

FIG. 8 shows a possible structural schematic diagram of the communication device involved in the foregoing embodiment. The communication device 800 may be used to implement the functions of the network device 102 provided in the embodiments of the present application. As shown in FIG. 8, the communication device 800 includes a transmitter / receiver 801, a controller / processor 802, a memory 803, and a communication unit 804.

Specifically, the transmitter / receiver 801 is used to support communication between the communication device 800 and the terminal device 101 in the foregoing embodiment, and to support the communication device 800 with other terminal devices, base stations, or communication devices Radio communication between. The controller / processor 802 performs various functions for communicating with the terminal device 101. On the uplink, the uplink signal from the terminal device 101 is received via the antenna, mediated by the receiver 801, and further processed by the controller / processor 802 to recover the service data and signal sent by the terminal device 101令信息。 Order information. On the downlink, the service data and signaling messages are processed by the controller / processor 802 and mediated by the transmitter 801 to generate downlink signals, which are transmitted to the terminal device 101 via the antenna. The controller / processor 802 also performs the processing procedure in FIG. 4 involving the network device 102 and / or other procedures for the network device 102 to perform the technology described in this application, for example, for determining the index number of the first number layer And / or used to determine the index number of all layers. The memory 803 is used to store program codes and data of the communication device 800, for example, data such as the first correspondence relationship, the second correspondence relationship, and the like provided by the embodiments of the present application may be stored. The communication unit 804 includes but is not limited to an optical fiber link interface, an Ethernet interface, a copper wire interface, etc., and can be used to support the communication device 800 to communicate with other network entities and network entities located in the core network.

Exemplarily, the transmitter / receiver 801 may be used to perform the steps shown in S101 and S103 in FIG. 4. The transmitter / receiver 801 may also be used to perform the steps shown in S101 and S103a in FIG. 4A. The transmitter / receiver 801 may also be used to perform the step shown in S201 in FIG. 6 and the step of receiving HARQ feedback information in the step shown in S204. The transmitter / receiver 801 may also be used to send the second information, first configuration information, third configuration information, fourth configuration information, fifth configuration information or sixth configuration information involved in the present application to the terminal device 101, or above A combination of multiple pieces of information, or other information, data, and / or messages that need to be sent to the terminal device 101 in this application. The transmitter / receiver 801 may also be used to receive the first notification information sent by the terminal device 101 involved in the embodiment of the present application.

The present application does not limit the connection media between the transmitter / receiver 801, the controller / processor 802, the memory 803, and the communication unit 804. For example, these components may be connected by a bus structure or other media. The transmitter / receiver 801, the controller / processor 802, the memory 803, and the communication unit 804 may be independent of each other, or may be integrated on one chip.

FIG. 9 shows a simplified schematic diagram of a possible design structure of the communication device 900 involved in the foregoing embodiment. The communication device 900 may be used to implement the functions of the terminal device 101 provided in the embodiment of the present application. The communication device 900 includes a transmitter 901, a receiver 902, a controller / processor 903, a memory 904, and a modem processor 905.

In implementation, the transmitter 901 may adjust (eg, analog conversion, filtering, amplification, up-conversion, etc.) output samples and generate an uplink signal, which is transmitted to the network device described in the above embodiment via an antenna 102. On the downlink, the antenna receives the downlink signal transmitted by the network device 102 in the above embodiment. The receiver 902 adjusts (eg, filters, amplifies, down-converts, digitizes, etc.) the signal received from the antenna and provides input samples. In the modem processor 905, the encoder receives service data and signaling messages to be sent on the uplink, and processes the service data and signaling messages (e.g., formatting, encoding, and interleaving). The modulator further processes (eg, symbol mapping and modulation) the encoded service data and signaling messages and provides output samples. The demodulator processes (eg, demodulates) the input samples and provides symbol estimates. The decoder processes (e.g., deinterleaves and decodes) the symbol to estimate and provide the decoded data and signaling messages sent to the communication device 900. The encoder, modulator, demodulator, and decoder may be implemented by the synthesized modem processor 1105. These units are processed according to the radio access technology adopted by the radio access network (for example, the access technology of LTE and other evolved systems).

The controller / processor 903 may be used to control and manage the actions of the communication device 900, to perform the processing operations performed by the terminal device 101 in the foregoing embodiment, for example, to determine all corresponding to the first codeword according to information of all layers The index numbers of the layers to which the modulation symbols are mapped and / or other processes of the technology described in this application. The controller / processor 903 can also be used to perform the steps shown in S203 in FIG. 6. The transmitter 901 and the receiver 902 perform wireless communication by the communication device 900. As an example, the transmitter 1901 can also be used to perform the steps shown in S204 in FIG. 6. The transmitter 1901 can also be used for the communication device 900 to send the first notification information and the like to the network device 102 described in the embodiments of the present application. The receiver 902 may be used to support the terminal device 101 to perform the operation of receiving the first information in step S102 in FIG. 4 and the operation of receiving the first codeword in S104. The receiver 902 may also be used to support the terminal device 101 to perform steps S102 and S104 in FIG. 4A. The receiver 902 is also used to support the terminal device 101 to perform the steps shown in S202 in FIG. 6. The receiver 902 may also be used to receive some or all of the second information, first configuration information, second configuration information, third configuration information, fourth configuration information, fifth configuration information, or sixth configuration information sent by the network device 102 Information, and receive information, data, and / or messages sent by other network devices 102. The memory 904 is used to store program codes and data for the terminal device 101, for example, to store data such as the first correspondence relationship and the second correspondence relationship provided by the embodiments of the present application, and data and information sent by other network devices 102. The controller / The processor 903 may call the program code in the memory 904 to perform the processing operation performed by the terminal device 101 provided in the embodiment of the present application.

The application does not limit the connection media between the transmitter 901, the receiver 902, the controller / processor 903, the memory 904, and the modem processor 905. For example, these components may be connected by a bus structure or other media. The transmitter 901, the receiver 902, the controller / processor 903, the memory 904 and the modem processor 905 may be independent of each other, or may be integrated on one chip.

It should be understood that the structure of the above communication device for implementing the network device 102 and the terminal device 101 provided in the embodiments of the present application is merely an example, and the network device 102 and / or the terminal device 101 provided in the embodiments of the present application may also be modularized. Structure realization.

As shown in FIG. 10, a modular communication device 1000 provided by an embodiment of the present application may include a receiving unit 1001, a processing unit 1002, and a storage unit 1004.

If the communication device 1000 is a terminal device, the receiving unit 1001 may be used to perform the receiving process involved in the terminal device 101 in the embodiment of the present application, for example, performing the operation of receiving the first information in step S102 in FIG. 4 and receiving the first Codeword operation. The communication device may further include a storage unit 1004 for storing program codes and data, and these program codes may be called by the receiving unit 1001 and / or the processing unit to implement corresponding processing operations.

The receiving unit 1001 may also be used to support the terminal device 101 to execute steps S102 and S104 in FIG. 4A. The receiving unit 1001 is also used to support the terminal device 101 to perform the steps shown in S202 in FIG. 6. The receiving unit 1001 may also be used to receive some or all of the second information, first configuration information, second configuration information, third configuration information, fourth configuration information, fifth configuration information, or sixth configuration information sent by the network device 102 Information, and receive information, data, and / or messages sent by other network devices 102. The processing unit 1002 may be used to perform the processing procedure involved in the terminal device 101 in the embodiment of the present application. Specifically, the processing unit 1002 may be used to perform the step of determining the information of all layers in the step shown in S104 in FIG. 4. The processing unit 1002 may be used to perform the steps shown in S203 in FIG. 6. The processing unit 1002 can also be used to determine the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped according to the information of all layers. A codeword.

The communication device 1000 may further include a sending unit 1003, and the sending unit 1003 may be used to perform the steps shown in S204 in FIG. 6.

Exemplarily, the receiving unit 1001 may be configured to receive first information that is used to indicate information of a first number of layers corresponding to the first codeword, and the first number is smaller than the first code The number of all layers corresponding to a word, the first number is a positive integer greater than or equal to 1, and the number of all layers is a positive integer greater than or equal to 2;

The receiving unit 1001 is configured to receive the first codeword according to the information of the first number of layers corresponding to the first codeword, and all modulation symbols corresponding to the first codeword are mapped to the first Number of layers; or, the processing unit 1002 may be used to determine the information of all layers; the receiving unit 1001 is used to receive the first code according to the information of all layers determined by the processing unit Word, all modulation symbols corresponding to the first codeword are mapped to all layers.

Exemplarily, the receiving unit 1001 is further configured to receive first configuration information; the processing unit 1002 is specifically configured to determine the information of all layers according to the first configuration information received by the receiving unit, the The first configuration information is used to indicate the information of all the layers; or,

The processing unit 1002 is specifically configured to determine the information of all the layers according to the first information, and the first information is also used to indicate the information of the all layers; or,

The receiving unit 1001 is further configured to receive second configuration information, and the processing unit is configured to determine the information of all layers according to the first information and the second configuration information received by the receiving unit. 2. The configuration information is used to indicate information of a plurality of all layers, and the first information is also used to indicate information of one all layer of the information of the plurality of all layers; or,

The receiving unit 1001 is further configured to receive the second information, and the processing unit 1002 is configured to determine the information of all layers according to the first information and the second information received by the receiving unit 1001, The second information is used to indicate information of a second number of layers corresponding to the first codeword, and the information of all layers includes information of the first number of layers and information of the second number of layers .

Exemplarily, the processing unit 1002 is specifically configured to: according to the information of all layers, determine the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped;

The receiving unit 1001 is specifically configured to receive the first codeword according to the index number of the layer to which all the modulation symbols determined by the processing unit are respectively mapped.

Exemplarily, the processing unit 1002 is specifically configured to determine the layer to which all modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and the first correspondence. Index number, the first correspondence is a correspondence between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers.

Exemplarily, the processing unit 1002 is specifically configured to determine the index number of the layer to which the modulation symbol corresponding to the first codeword is mapped according to the information of the first number of layers corresponding to the first codeword;

The receiving unit 1001 is specifically configured to receive the first codeword according to the index numbers of the layers to which the modulation symbols corresponding to the first codeword respectively determined by the processing unit are mapped.

Exemplarily, the processing unit 1002 is specifically configured to determine the layer to which all modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set and the second correspondence between the modulation symbols in the all modulation symbols Index number, the second correspondence relationship is a correspondence relationship between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers.

Exemplarily, the first information and the second information satisfy a first condition, and the first condition includes at least one of the following conditions: the hybrid automatic repeat request HARQ process identifier and the location indicated by the first information The HARQ process identifier indicated by the second information is the same; or, the antenna port indicated by the first information is different from the antenna port indicated by the second information; or, the first codeword indicated by the first information corresponds to The first number of layers of information is different from the second number of layers of information corresponding to the first codeword indicated by the second information; or, the first information includes new data indicating information NDI and The NDI included in the second information is the same; or, the downlink allocation indication information DAI included in the first information is the same as the DAI included in the second information; or the codeword indication information included in the first information is the same as the The codeword indication information included in the second information is the same; or, the time-frequency domain resource indicated by the first information and the time-frequency domain resource indicated by the second information partially or completely overlap.

Exemplarily, the receiving unit 1001 is further configured to receive third configuration information, the third configuration information, the first information, and the second information satisfy a second condition, and the second condition includes the following conditions At least one of: the third configuration information is used to indicate a first format, the format of the first information and the format of the second information are both the first format; or, the third configuration information is used to Indicating the first wireless network identity RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI; Set, the resource where the first information is located and the resource where the second information is located belong to the first control resource set; or, the third configuration information is used to indicate a first search space, the first information The search space where the second information is located and the search space where the second information is located are the first search space.

Exemplarily, the first number is p, and the information of the first number of layers includes layer B ₀ , layer B ₁ ..., and layer B _p-1 , where B ₀ , B ₁ ..., and B _p-1 are The index number of the layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and each modulation symbol set in the all modulation symbols and the index of the layer included in the information of all layers The corresponding relationship of the numbers includes: when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B ₀ ; or, when p is 2, all modulation symbols corresponding to the first codeword include the first modulation A symbol set and a second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , the index number of the modulation symbol in the first modulation symbol set is p * i, and the second modulation The modulation symbols in the symbol set are mapped to layer B ₁ , and the index number of the modulation symbols in the second modulation symbol set is p * i + 1; or, when p is 3, all the modulations corresponding to the first codeword Symbols include a first set of modulation symbols, a second set of modulation symbols, and a third modulation symbol Symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , the index number of the modulation symbols in the first modulation symbol set is p * i, and the modulation symbols in the second modulation symbol set Mapped to layer B ₁ , the index number of the modulation symbol in the second modulation symbol set is p * i + 1, and the modulation symbol in the third modulation symbol set is mapped to layer B ₂ , the third modulation symbol set The index number of the modulation symbol of is p * i + 2; or, when p is 4, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, a third modulation symbol set and A fourth modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , the index number of the modulation symbol in the first modulation symbol set is p * i, and the second modulation symbol set The modulation symbols of are mapped to layer B ₁ , the index number of the modulation symbols in the second modulation symbol set is p * i + 1, the modulation symbols in the third modulation symbol set are mapped to layer B ₂ , the first The index number of the modulation symbol in the three modulation symbol set p * i + 2, the modulation symbols of the fourth set of modulation symbols mapped to the layer B _3, the fourth set of modulation symbols in a modulation symbol index number of p * i + 3; wherein, i is 0 to

It should be understood that the communication device 1000 shown in FIG. 10 may be implemented by the communication device 900 shown in FIG. 9. For example, the information receiving function of the receiving unit 1001 can be realized by the receiver 902 in the communication device 900, the transmission function of the transmitting unit 1003 can be realized by the transmitter 901 in the communication device 900, and the processing function of the receiving unit 1001 And the processing function possessed by the processing unit 1002 can be realized by the controller / processor 903. The function of the storage unit 1004 can be realized by the memory 803. The above implementation of the communication device 1000 is merely an example, and should not be construed as a limitation on the implementation of the communication device 1000.

As shown in FIG. 11, a modular communication device 1100 provided by an embodiment of the present application. If the communication device 1100 is a network device, the communication device 1100 may be used to perform the function of the network device 102 provided in the embodiment of the present application. The communication device 1100 may include a transmission unit 1101, a storage unit 1102. In addition, the communication device 1100 may further include a receiving unit 1103, configured to receive information sent by the terminal device 101 in the embodiment of the present application, such as first notification information and HARQ information. The communication device 1100 may further include a processing unit 1104 for implementing the processing function of the network device 102.

Specifically, the sending unit 1101 may be used to perform the steps shown in S101, S103 in FIG. 4 and / or S101, S103a in FIG. 4A, and / or the steps shown in S201 in FIG. The sending unit 1101 may be further configured to send the second information, first configuration information, third configuration information, fourth configuration information, fifth configuration information or sixth configuration information involved in the present application to the terminal device 101, or a plurality of the above information Between. The receiving unit 1103 may be used to perform the receiving step shown in S204 in FIG. 6 and / or to receive HARQ information sent by the terminal device 101 in this application. The processing unit 1104 may be used to perform a process related to the network device 102 itself and / or other processes used by the network device 102 to perform the technology described in this application, for example, to determine the index number of the first number layer And / or used to determine the index number of all layers.

Exemplarily, the storage unit 1102 may be used to store program instructions;

The sending unit 1101 may be used to send first information, where the first information is used to indicate information of a first number of layers corresponding to the first codeword, and the first number is less than all corresponding to the first codeword Number of layers, the first number is a positive integer greater than or equal to 1, and the number of all layers is a positive integer greater than or equal to 2;

The sending unit 1101 may be used to send the first codeword, all modulation symbols corresponding to the first codeword are mapped to all layers, or all modulation symbols corresponding to the first codeword are mapped to all Describe the first number of layers.

Exemplarily, the sending unit 1101 is further configured to send second information, the second information indicating information of a second number of layers corresponding to the first codeword.

Exemplarily, the first information is also used to indicate the information of all the layers; or,

The sending unit 1101 is also used to:

Sending first configuration information, the first configuration information is used to indicate the information of all the layers; or sending second configuration information, the second configuration information is used to indicate the information of a plurality of all layers, the first information It is also used to indicate the information of one all layer in the plurality of information of all layers; or,

Sending second information, the information of all layers includes information of the first number of layers and information of the second number of layers.

Exemplarily, the sending unit 1101 is specifically configured to send information of all layers, and the information of all layers is used to indicate an index number of a layer to which all modulation symbols corresponding to the first codeword are mapped; and Sending the first codeword according to the index number of the layer to which all modulation symbols corresponding to the first codeword are respectively mapped.

Exemplarily, the processing unit 1104 is specifically configured to:

Determine the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped respectively according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and the first correspondence, the first correspondence is Correspondence between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers.

Exemplarily, the processing unit 1104 is specifically configured to determine the index number of the layer to which the modulation symbol corresponding to the first codeword is mapped according to the information of the first number of layers corresponding to the first codeword, The sending unit is specifically configured to send the first codeword according to the index numbers of the layers respectively mapped by the modulation symbols determined by the processing unit.

Exemplarily, the processing unit 1104 is specifically configured to determine the layer to which all modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and the second corresponding relationship Index number, the second correspondence relationship is a correspondence relationship between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers.

Exemplarily, the sending unit 1001 is further configured to send third configuration information, where the third configuration information, the first information, and the second information satisfy a second condition, and the second condition includes the following conditions At least one of: the third configuration information is used to indicate a first format, the format of the first information and the format of the second information are both the first format; or, the third configuration information is used to Indicating the first RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI; or, the third configuration information is used to indicate the first set of control resources, The resource where the first information is located and the resource where the second information is located belong to the first control information set; or, the third configuration information is used to indicate the first search space, the search where the first information is located The space and the search space where the second information is located are the first search space.

Exemplarily, the first number is p, and the information of the first number of layers includes layer B ₀ , layer B ₁ ..., and layer B _p-1 , where B ₀ , B ₁ ..., and B _p-1 are The index number of the layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and each modulation symbol set in the all modulation symbols and the index of the layer included in the information of all layers The corresponding relationship of the numbers includes: when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B ₀ ; or,

When p is 2, all modulation symbols corresponding to the first codeword include a first modulation symbol set and a second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B ₀ , the first The index number of the modulation symbol in the modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B ₁ , and the index number of the modulation symbol in the second modulation symbol set is p * i +1; or, when p is 3, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, and a third modulation symbol set, and the modulation in the first modulation symbol set The symbol is mapped to layer B ₀ , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B ₁ , the second modulation symbol set The index number of the modulation symbol in is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B ₂ , and the index number of the modulation symbol in the third modulation symbol set is p * i + 2; Or, when p is 4, the full code corresponding to the first codeword Modulation symbol comprises a first set of modulation symbols, the second set of modulation symbols, a third set of modulation symbols and the fourth modulation symbol set, mapping the modulation symbols in the first set of modulation symbols into a layer B _0, the first modulation symbol The index number of the modulation symbol in the set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B ₁ , and the index number of the modulation symbol in the second modulation symbol set is p * i + 1 , The modulation symbols in the third modulation symbol set are mapped to layer B ₂ , the index number of the modulation symbols in the third modulation symbol set is p * i + 2, and the modulation symbols in the fourth modulation symbol set Mapped to layer B ₃ , the index number of the modulation symbol in the fourth modulation symbol set is p * i + 3; where, i is from 0 to

It should be understood that the communication device 1100 shown in FIG. 11 may be implemented by the communication device 800 shown in FIG. 8. For example, the receiving function of the receiving unit 1103 and the sending function of the transmitting unit 1101 can be implemented by the transmitter / receiver 801 in the communication device 800, and the processing function of the processing unit 1104 can be implemented by the controller / processor 802 . The function of the storage unit 1103 can be realized by the memory 803. The above implementation of the communication device 1100 is merely an example, and should not be construed as a limitation on the implementation of the communication device 1000.

It should be understood that the processor (such as the processor 801) mentioned in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general-purpose processors and digital signal processors (DSP). ), Application specific integrated circuit (application) specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory (such as the memory 803) mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erasable programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (random access memory, RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous RAM), SDRAM), double data rate synchronous dynamic random access memory (double data SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct RAMbus RAM, DR RAM).

The memories and storage units described herein include but are not limited to these and any other suitable types of memories.

Based on the same concept as the above method embodiment, an embodiment of the present application also provides a computer-readable storage medium on which some instructions are stored, and when these instructions are called and executed, the first device or the second device may execute the above method The functions involved in any possible design of the embodiments and method embodiments. In the embodiment of the present application, the readable storage medium is not limited, for example, it may be RAM (random-access memory), ROM (read-only memory).

Based on the same concept as the above method embodiments, embodiments of the present application also provide a computer program product, which can cause the first device or the second device to execute the above method embodiments and method implementation when the computer program product is run by a computer Examples of the functions involved in any possible design.

Based on the same concept as the above method embodiment, an embodiment of the present application further provides a chip, which can be coupled to a transceiver and used by a first device or a second device to implement any of the above method embodiments and method embodiments Possible functions involved in the design.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

Claims

A communication method, characterized in that it includes:

The terminal device receives first information, which is used to indicate information of a first number of layers corresponding to the first codeword, and the first number is less than the number of all layers corresponding to the first codeword. The first number is a positive integer greater than or equal to 1, and the number of all layers is a positive integer greater than or equal to 2;

The terminal device determines the information of all layers, and receives the first codeword according to the information of all layers, and all modulation symbols corresponding to the first codeword are mapped to the all layers; or,

The terminal device receives the first codeword according to the information of the first number of layers corresponding to the first codeword, and all modulation symbols corresponding to the first codeword are mapped to the first number of layers.
The method according to claim 1, wherein the terminal device determining the information of all layers includes:

Receiving, by the terminal device, first configuration information, and determining information of all layers according to the first configuration information, the first configuration information is used to indicate information of all layers; or,

The terminal device determines the information of all layers according to the first information, and the first information is also used to indicate the information of all layers; or,

The terminal device receives second configuration information, and determines the information of all layers according to the first information and the second configuration information. The second configuration information is used to indicate information of a plurality of all layers. A piece of information is also used to indicate information of one all layer in the plurality of all layer information; or,

The terminal device receives second information, determines the information of all layers according to the first information and the second information, and the second information is used to indicate a second number of layers corresponding to the first codeword Information of the entire layer includes information of the first number of layers and information of the second number of layers.
The method according to claim 1 or 2, wherein the terminal device receives the first codeword according to the information of all layers, and all modulation symbols corresponding to the first codeword are mapped to the All layers, including:

The terminal device determines the index numbers of the layers to which all modulation symbols corresponding to the first codeword are mapped according to the information of all the layers;

The terminal device receives the first codeword according to the index number of the layer to which all the modulation symbols are separately mapped.
The method according to claim 3, wherein the terminal device determines the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped based on the information of the all layers, including:

The terminal device determines an index number of a layer to which all modulation symbols corresponding to the first codeword are mapped respectively according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and the first correspondence, the first correspondence The relationship is the correspondence between each modulation symbol set in the all modulation symbols and the index number of the layer included in the information of all layers.
The method according to claim 1 or 2, wherein the terminal device receives the first codeword according to the information of all layers, and all modulation symbols corresponding to the first codeword are mapped to the The first number of layers includes:

The terminal device determines, according to the information of the first number of layers corresponding to the first codeword, the index numbers of the layers to which the modulation symbols corresponding to the first codeword are respectively mapped;

The terminal device receives the first codeword according to the index number of the layer to which all the modulation symbols are separately mapped.
The method according to claim 5, wherein the terminal device determines, according to the information of the first number of layers corresponding to the first codeword, that modulation symbols corresponding to the first codeword are respectively mapped The index number of the layer, including:

The terminal device determines an index number of a layer to which all modulation symbols corresponding to the first codeword are mapped respectively according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and a second correspondence, and the second correspondence The relationship is the correspondence between each modulation symbol set in the all modulation symbols and the index number of the layer included in the information of all layers.
The method of claim 2, wherein the first information and the second information satisfy a first condition, and the first condition includes at least one of the following conditions:

The HARQ process ID of the hybrid automatic repeat request indicated by the first information is the same as the HARQ process ID indicated by the second information; or,

The antenna port indicated by the first information is different from the antenna port indicated by the second information; or,

The information of the first number of layers corresponding to the first codeword indicated by the first information is different from the information of the second number of layers corresponding to the first codeword indicated by the second information; or,

The new data indication information NDI included in the first information is the same as the NDI included in the second information; or,

The downlink allocation indication information DAI included in the first information is the same as the DAI included in the second information; or,

The codeword indication information included in the first information is the same as the codeword indication information included in the second information; or,

The time-frequency domain resource indicated by the first information and the time-frequency domain resource indicated by the second information partially overlap or completely overlap.
The method according to claim 2 or 7, further comprising:

The terminal device receives third configuration information, and the third configuration information, the first information, and the second information satisfy a second condition, and the second condition includes at least one of the following conditions:

The third configuration information is used to indicate a first format, the format of the first information and the format of the second information are both the first format; or,

The third configuration information is used to indicate the first wireless network identity RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI; or,

The third configuration information is used to indicate a first set of control resources, and the resource where the first information is located and the resource where the second information is located belong to the first set of control resources; or,

The third configuration information is used to indicate a first search space, and the search space where the first information is located and the search space where the second information is located are the first search space.
The method according to any one of claims 1-8, wherein the first number is p, and the information of the first number of layers includes layer B 0 , layer B 1 ..., and layer B p -1 , where B 0 , B 1 ... And B p-1 are the layer index numbers, and all modulation symbols corresponding to the first codeword include the number of modulation symbol sets p, and each of the all modulation symbols The correspondence between the set of modulation symbols and the index number of the layer included in the information of all layers includes:

When p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B 0 ; or,

When p is 2, all modulation symbols corresponding to the first codeword include a first modulation symbol set and a second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the first The index number of the modulation symbol in the modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , and the index number of the modulation symbol in the second modulation symbol set is p * i +1; or,

When p is 3, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, and a third modulation symbol set, and the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , the modulation symbol in the second modulation symbol set The index number is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i + 2; or,

When p is 4, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, a third modulation symbol set, and a fourth modulation symbol set. The modulation symbols are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbols in the second modulation symbol set are mapped to layer B 1 , the second modulation symbol The index number of the modulation symbol in the set is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i +2, the modulation symbols in the fourth modulation symbol set are mapped to layer B 3 , and the index number of the modulation symbols in the fourth modulation symbol set is p * i + 3;

Where i is from 0 to
, M is the number of all modulation symbols corresponding to the first codeword.
A communication method, characterized in that it includes:

The network device sends first information that is used to indicate information of a first number of layers corresponding to the first codeword, the first number is less than the number of all layers corresponding to the first codeword, the The first number is a positive integer greater than or equal to 1, and the number of all layers is a positive integer greater than or equal to 2;

The network device sends the first codeword, and all modulation symbols corresponding to the first codeword are mapped to the all layers, or all modulation symbols corresponding to the first codeword are mapped to the first number Layer.
The method of claim 10, further comprising:

The network device sends second information indicating the second number of layers of information corresponding to the first codeword.
The method of claim 10, further comprising:

The network device sends first configuration information, where the first configuration information is used to indicate the information of all layers; or,

The first information is also used to indicate information of all the layers; or,

The network device sends second configuration information, the second configuration information is used to indicate information of a plurality of all layers, and the first information is also used to indicate information of one all layer of the plurality of all layer information ;or,

The network device sends second information indicating the information of the second number of layers corresponding to the first codeword, and the information of all layers includes the information of the first number of layers and the Information about the second number of layers.
The method according to any one of claims 10-12, wherein the network device sends the first codeword, and all modulation symbols corresponding to the first codeword are mapped to the all layers, include:

The network device sends the information of all layers, and the information of all layers is used to indicate an index number of a layer to which all modulation symbols corresponding to the first codeword are mapped;

The network device sends the first codeword according to the index numbers of layers to which all modulation symbols corresponding to the first codeword are mapped.
The method according to claim 13, wherein the network device determines the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped according to the following method:

The network device determines the index number of the layer to which all the modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and the first correspondence, the first correspondence The relationship is the correspondence between each modulation symbol set in the all modulation symbols and the index number of the layer included in the information of all layers.
The method according to any one of claims 10-12, wherein the network device sends the first codeword, and all modulation symbols corresponding to the first codeword are mapped to the first number The layers include:

The network device determines, according to the information of the first number of layers corresponding to the first codeword, the index numbers of the layers to which the modulation symbols corresponding to the first codeword are respectively mapped;

The network device sends the first codeword according to the index numbers of the layers to which all the modulation symbols are separately mapped.
The method according to claim 15, wherein the network device determines that the modulation symbols corresponding to the first codeword are respectively mapped according to the information of the first number of layers corresponding to the first codeword The index number of the layer, including:

The network device determines an index number of a layer to which all modulation symbols corresponding to the first codeword are mapped according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and a second correspondence, and the second correspondence The relationship is the correspondence between each modulation symbol set in the all modulation symbols and the index number of the layer included in the information of all layers.
The method according to claim 11 or 12, wherein the first information and the second information satisfy a first condition, and the first condition includes at least one of the following conditions:

The HARQ process ID of the hybrid automatic repeat request indicated by the first information is the same as the HARQ process ID indicated by the second information; or,

The antenna port indicated by the first information is different from the antenna port indicated by the second information; or,

The information of the first number of layers corresponding to the first codeword indicated by the first information is different from the information of the second number of layers corresponding to the first codeword indicated by the second information; or,

The new data indication information NDI included in the first information is the same as the NDI included in the second information; or,

The downlink allocation indication information DAI included in the first information is the same as the DAI included in the second information; or,

The codeword indication information included in the first information is the same as the codeword indication information included in the second information; or,

The time-frequency domain resource indicated by the first information and the time-frequency domain resource indicated by the second information partially overlap or completely overlap.
The method according to any one of claims 11, 12, and 17, further comprising:

The network device sends third configuration information, the third configuration information, the first information, and the second information satisfy a second condition, and the second condition includes at least one of the following conditions:

The third configuration information is used to indicate a first format, the format of the first information and the format of the second information are both the first format; or,

The third configuration information is used to indicate the first RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI; or,

The third configuration information is used to indicate a first control resource set, and the resource where the first information is located and the resource where the second information is located belong to the first control information set; or,

The third configuration information is used to indicate a first search space, and the search space where the first information is located and the search space where the second information is located are the first search space.
The method according to any one of claims 10 to 18, wherein the first number is p, and the information of the first number of layers includes layer B 0 , layer B 1 ..., and layer B p -1 , where B 0 , B 1 ... And B p-1 are the layer index numbers, and all modulation symbols corresponding to the first codeword include the number of modulation symbol sets p, and each of the all modulation symbols The correspondence between the set of modulation symbols and the index number of the layer included in the information of all layers includes:

When p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B 0 ; or,

When p is 2, all modulation symbols corresponding to the first codeword include a first modulation symbol set and a second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the first The index number of the modulation symbol in the modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , and the index number of the modulation symbol in the second modulation symbol set is p * i +1; or,

When p is 3, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, and a third modulation symbol set, and the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , the modulation symbol in the second modulation symbol set The index number is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i + 2; or,

When p is 4, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, a third modulation symbol set, and a fourth modulation symbol set. The modulation symbols are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbols in the second modulation symbol set are mapped to layer B 1 , the second modulation symbol The index number of the modulation symbol in the set is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i +2, the modulation symbols in the fourth modulation symbol set are mapped to layer B 3 , and the index number of the modulation symbols in the fourth modulation symbol set is p * i + 3;

Where i is from 0 to
, M is the number of all modulation symbols corresponding to the first codeword.
A communication device is characterized by comprising a storage unit, a receiving unit and a processing unit:

The storage unit is used to store program instructions;

The receiving unit is configured to receive first information used to indicate information of a first number of layers corresponding to the first codeword, the first number being less than all layers corresponding to the first codeword The number of the first number is a positive integer greater than or equal to 1, and the number of all layers is a positive integer greater than or equal to 2;

The receiving unit is configured to receive the first codeword according to the information of the first number of layers corresponding to the first codeword, and all modulation symbols corresponding to the first codeword are mapped to the first number Layer; or,

The processing unit is used to determine the information of all the layers;

The receiving unit is configured to receive the first codeword according to the information of all layers determined by the processing unit, and all modulation symbols corresponding to the first codeword are mapped to the all layers.
The device according to claim 20, wherein

The receiving unit is further configured to receive first configuration information; the processing unit is specifically configured to determine information of all layers according to the first configuration information received by the receiving unit, and the first configuration information is used to Information indicating all the layers; or,

The processing unit is specifically configured to determine the information of the all layers according to the first information, and the first information is also used to indicate the information of the all layers; or,

The receiving unit is further configured to receive second configuration information, and the processing unit is configured to determine the information of all layers according to the first information and the second configuration information received by the receiving unit, the second The configuration information is used to indicate information of a plurality of all layers, and the first information is also used to indicate information of one all layer of the information of the plurality of all layers; or,

The receiving unit is further configured to receive the second information, and the processing unit is configured to determine the information of all layers according to the first information and the second information received by the receiving unit, the first The second information is used to indicate information of the second number of layers corresponding to the first codeword, and the information of all layers includes information of the first number of layers and information of the second number of layers.
The device according to claim 20 or 21, characterized in that

The processing unit is specifically configured to: according to the information of all layers, determine an index number of a layer to which all modulation symbols corresponding to the first codeword are mapped;

The receiving unit is specifically configured to receive the first codeword according to the index number of the layer to which all the modulation symbols determined by the processing unit are respectively mapped.
The apparatus according to claim 22, wherein the processing unit is specifically configured to determine the corresponding to the first codeword according to the modulation symbol set and the first correspondence between the modulation symbols in all the modulation symbols The index numbers of the layers to which all modulation symbols are mapped respectively. The first correspondence is the correspondence between each modulation symbol set in the all modulation symbols and the index number of the layer included in the information of all layers.
The apparatus according to claim 20 or 21, wherein the processing unit is specifically configured to determine, according to the information of the first number of layers corresponding to the first codeword, the corresponding The index number of the layer to which the modulation symbols are mapped separately;

The receiving unit is specifically configured to receive the first codeword according to the index number of the layer to which the modulation symbols corresponding to the first codeword respectively determined by the processing unit are mapped.
The apparatus according to claim 24, wherein the processing unit is specifically configured to determine, according to the modulation symbol set and the second correspondence between the modulation symbols in all the modulation symbols, the corresponding The index numbers of the layers to which all modulation symbols are mapped respectively, and the second correspondence is the correspondence between each modulation symbol set in the all modulation symbols and the index number of the layer included in the information of all layers.
The apparatus according to claim 21, wherein the first information and the second information satisfy a first condition, and the first condition includes at least one of the following conditions:

The HARQ process ID of the hybrid automatic repeat request indicated by the first information is the same as the HARQ process ID indicated by the second information; or,

The antenna port indicated by the first information is different from the antenna port indicated by the second information; or,

The information of the first number of layers corresponding to the first codeword indicated by the first information is different from the information of the second number of layers corresponding to the first codeword indicated by the second information; or,

The new data indication information NDI included in the first information is the same as the NDI included in the second information; or,

The downlink allocation indication information DAI included in the first information is the same as the DAI included in the second information; or,

The codeword indication information included in the first information is the same as the codeword indication information included in the second information; or,

The time-frequency domain resource indicated by the first information and the time-frequency domain resource indicated by the second information partially overlap or completely overlap.
The apparatus according to claim 21 or 26, wherein the receiving unit is further configured to receive third configuration information, the third configuration information, the first information, and the second information The second condition is satisfied, and the second condition includes at least one of the following conditions:

The third configuration information is used to indicate a first format, the format of the first information and the format of the second information are both the first format; or,

The third configuration information is used to indicate the first wireless network identity RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI; or,

The third configuration information is used to indicate a first set of control resources, and the resource where the first information is located and the resource where the second information is located belong to the first set of control resources; or,

The third configuration information is used to indicate a first search space, and the search space where the first information is located and the search space where the second information is located are the first search space.
The device according to any one of claims 20 to 27 , wherein the first number is p, and the information of the first number of layers includes layer B 0 , layer B 1 ..., and layer B p -1 , where B 0 , B 1 ... And B p-1 are the layer index numbers, and all modulation symbols corresponding to the first codeword include the number of modulation symbol sets p, and each of the all modulation symbols The correspondence between the set of modulation symbols and the index number of the layer included in the information of all layers includes:

When p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B 0 ; or,

When p is 2, all modulation symbols corresponding to the first codeword include a first modulation symbol set and a second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the first The index number of the modulation symbol in the modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , and the index number of the modulation symbol in the second modulation symbol set is p * i +1; or,

When p is 3, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, and a third modulation symbol set, and the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , the modulation symbol in the second modulation symbol set The index number is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i + 2; or,

When p is 4, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, a third modulation symbol set, and a fourth modulation symbol set. The modulation symbols are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbols in the second modulation symbol set are mapped to layer B 1 , the second modulation symbol The index number of the modulation symbol in the set is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i +2, the modulation symbols in the fourth modulation symbol set are mapped to layer B 3 , and the index number of the modulation symbols in the fourth modulation symbol set is p * i + 3;

Where i is from 0 to
, M is the number of all modulation symbols corresponding to the first codeword.
A communication device, characterized in that it includes a storage unit and a sending unit:

The storage unit is used to store program instructions;

The sending unit is configured to send first information that is used to indicate information of a first number of layers corresponding to the first codeword, and the first number is less than all layers corresponding to the first codeword Number, the first number is a positive integer greater than or equal to 1, and the number of all layers is a positive integer greater than or equal to 2;

The sending unit is configured to send the first codeword, all modulation symbols corresponding to the first codeword are mapped to the all layers, or all modulation symbols corresponding to the first codeword are mapped to the The first number of layers.
The device of claim 29, wherein

The sending unit is further configured to send second information indicating the second number of layers of information corresponding to the first codeword.
The device of claim 29, wherein

The first information is also used to indicate information of all the layers; or,

The sending unit is also used to:

Sending first configuration information, the first configuration information is used to indicate the information of all layers; or, sending second configuration information, the second configuration information is used to indicate information of a plurality of all layers, the first The information is also used to indicate the information of one all layer of the plurality of all layer information; or,

Sending second information, the information of all layers includes information of the first number of layers and information of the second number of layers.
The apparatus according to any one of claims 29 to 31, wherein the sending unit is specifically configured to send the information of all layers, and the information of all layers is used to indicate the first codeword An index number of a layer to which all corresponding modulation symbols are mapped; and an index number of a layer to which all modulation symbols corresponding to the first codeword are mapped, respectively, to send the first codeword.
The apparatus of claim 32, further comprising a processing unit, the processing unit is specifically configured to:

Determine the index number of the layer to which all modulation symbols corresponding to the first codeword are mapped respectively according to the modulation symbol set to which the modulation symbols in the all modulation symbols belong and the first correspondence, the first correspondence is Correspondence between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers.
The device according to any one of claims 29 to 31, further comprising a processing unit, the processing unit is specifically configured to use information of the first number of layers corresponding to the first codeword To determine the index number of the layer to which the modulation symbol corresponding to the first codeword is mapped, and the sending unit is specifically configured to send the first number according to the index number of the layer to which the modulation symbol is mapped by the processing unit. A codeword.
The apparatus according to claim 34, wherein the processing unit is specifically configured to determine the corresponding to the first codeword according to the modulation symbol set and the second correspondence between the modulation symbols in all the modulation symbols The index numbers of the layers to which all modulation symbols are mapped respectively, and the second correspondence is the correspondence between each modulation symbol set in the all modulation symbols and the index number of the layer included in the information of all layers.
The apparatus according to claim 30 or 31, wherein the first information and the second information satisfy a first condition, and the first condition includes at least one of the following conditions:

The HARQ process ID of the hybrid automatic repeat request indicated by the first information is the same as the HARQ process ID indicated by the second information; or,

The antenna port indicated by the first information is different from the antenna port indicated by the second information; or,

The information of the first number of layers corresponding to the first codeword indicated by the first information is different from the information of the second number of layers corresponding to the first codeword indicated by the second information; or,

The new data indication information NDI included in the first information is the same as the NDI included in the second information; or,

The downlink allocation indication information DAI included in the first information is the same as the DAI included in the second information; or,

The codeword indication information included in the first information is the same as the codeword indication information included in the second information; or,

The time-frequency domain resource indicated by the first information and the time-frequency domain resource indicated by the second information partially overlap or completely overlap.
The apparatus according to any one of claims 30, 31, and 36, wherein the sending unit is further configured to send third configuration information, the third configuration information, the first information, and all The second information satisfies a second condition, and the second condition includes at least one of the following conditions:

The third configuration information is used to indicate a first format, the format of the first information and the format of the second information are both the first format; or,

The third configuration information is used to indicate the first RNTI, the RNTI scrambling the first information and the RNTI scrambling the second information are both the first RNTI; or,

The third configuration information is used to indicate a first control resource set, and the resource where the first information is located and the resource where the second information is located belong to the first control information set; or,

The third configuration information is used to indicate a first search space, and the search space where the first information is located and the search space where the second information is located are the first search space.
The device according to any one of claims 29 to 37, wherein the first number is p, and the information of the first number of layers includes layer B 0 , layer B 1 ..., and layer B p -1 , where B 0 , B 1 ... And B p-1 are the layer index numbers, and all modulation symbols corresponding to the first codeword include the number of modulation symbol sets p, and each of the all modulation symbols The correspondence between the set of modulation symbols and the index number of the layer included in the information of all layers includes:

When p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B 0 ; or,

When p is 2, all modulation symbols corresponding to the first codeword include a first modulation symbol set and a second modulation symbol set, the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the first The index number of the modulation symbol in the modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , and the index number of the modulation symbol in the second modulation symbol set is p * i +1; or,

When p is 3, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, and a third modulation symbol set, and the modulation symbols in the first modulation symbol set are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbol in the second modulation symbol set is mapped to layer B 1 , the modulation symbol in the second modulation symbol set The index number is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i + 2; or,

When p is 4, all modulation symbols corresponding to the first codeword include a first modulation symbol set, a second modulation symbol set, a third modulation symbol set, and a fourth modulation symbol set. The modulation symbols are mapped to layer B 0 , the index number of the modulation symbol in the first modulation symbol set is p * i, the modulation symbols in the second modulation symbol set are mapped to layer B 1 , the second modulation symbol The index number of the modulation symbol in the set is p * i + 1, the modulation symbol in the third modulation symbol set is mapped to layer B 2 , and the index number of the modulation symbol in the third modulation symbol set is p * i +2, the modulation symbols in the fourth modulation symbol set are mapped to layer B 3 , and the index number of the modulation symbols in the fourth modulation symbol set is p * i + 3;

Where i is from 0 to
, M is the number of all modulation symbols corresponding to the first codeword.
A communication system characterized by comprising the device according to any one of claims 20 to 28 and the device according to any one of claims 29 to 38.
A computer-readable storage medium, comprising instructions, which when executed on a computer, causes the computer to execute the method of any one of claims 1 to 9, or causes the computer to execute the claims 10 to The method according to any one of 19.
A computer program product containing instructions, characterized in that when the computer program product runs on a computer, the computer program product is caused to perform the method of any one of claims 1 to 9, or the computer is executed claim 10 to The method according to any one of 19.
A chip, characterized in that the chip is coupled to a transceiver, and the chip is used to perform the method according to any one of claims 1 to 9, or the chip is used to perform a method according to claims 10 to The method according to any one of 19.