CN111147205A - Communication method and device - Google Patents

Communication method and device Download PDF

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CN111147205A
CN111147205A CN201811302948.7A CN201811302948A CN111147205A CN 111147205 A CN111147205 A CN 111147205A CN 201811302948 A CN201811302948 A CN 201811302948A CN 111147205 A CN111147205 A CN 111147205A
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information
layers
modulation symbol
codeword
symbol set
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CN111147205B (en
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邵家枫
官磊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2019/109234 priority patent/WO2020088185A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1806—Go-back-N protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a communication method and a communication device, wherein the method comprises the step that when a network device indicates information of all layers of a first code word to a terminal device through a plurality of pieces of control information, the number of all layers corresponding to the first code word is larger than the first number of the first code word indicated by any piece of control information. The network equipment generates a first code word, all modulation symbols corresponding to the first code word are mapped to all layers corresponding to the first code word, the terminal equipment receives at least one piece of information in the plurality of pieces of control information, the terminal equipment determines the information of all the layers, and receives the first code word according to the information of all the layers. Or, the network device sends a first codeword, all modulation symbols corresponding to the first codeword are mapped to the first number of layers, and the terminal device receives the first codeword according to information of the first number of layers corresponding to the first codeword. The terminal device is thus able to effect reception of the first codeword in the event that only part of the plurality of control information is received.

Description

Communication method and device
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a communication method and apparatus.
Background
Downlink Control Information (DCI) is used to indicate a Physical Downlink Shared Channel (PDSCH), such as indicating information indicating time-frequency domain resources occupied by the PDSCH, a modulation mode of the PDSCH, and the like, so that the terminal device determines which time-frequency resources to receive the PDSCH according to the DCI.
In new radio access technology (NR), a network device is allowed to transmit multiple DCIs to a terminal device to indicate the same codeword to be transmitted, the DCIs respectively indicate different layers (layers) to which modulation symbols of the codeword are mapped, the terminal device receives all the DCIs, may receive the modulation symbols of the codeword on the layers, and further completes reception of the codeword through demodulation and decoding. However, in the case where some of these DCIs are lost, the terminal device cannot receive the codeword, resulting in transmission failure.
Disclosure of Invention
The application provides a resource determination method and device, which are used for solving the technical problem that when network equipment indicates the same code word through a plurality of DCIs, terminal equipment cannot receive the code word according to part of the DCIs.
In a first aspect, an embodiment of the present application provides a communication method, where when the method is implemented by a terminal device, the terminal device may receive first information sent by a network device, the network device sends a first codeword, and if all modulation symbols corresponding to the first codeword are mapped to all layers corresponding to the first codeword, the terminal device determines information of all the layers, and receives the first codeword according to the information of all the layers, where the first information is used to indicate information of a first number of layers corresponding to the first codeword, the first number is smaller than the number of all the layers corresponding to the first codeword, the first number is a positive integer greater than or equal to 1, and the number of all the layers is a positive integer greater than or equal to 2. Or, if all modulation symbols corresponding to the first codeword are mapped to the first number of layers, the terminal device receives the first codeword according to 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 the multiple DCIs, the terminal device cannot receive the first codeword according to a part of the DCI, for example, the terminal device cannot receive the first codeword when a part of the DCI is lost, so that the transmission reliability is low. In order to solve the technical problem, according to the foregoing scheme provided in this embodiment of the present application, a terminal device may receive a first codeword according to information of a first number of layers corresponding to the first codeword, or according to information of all layers corresponding to the first codeword and the first information, where the first information is not information indicating all layers of the first codeword, in a case where only the first information is received, and thus, the foregoing scheme provided in this embodiment of the present application overcomes a technical problem that when a network device indicates different layers of the first codeword through a plurality of DCIs, the terminal device cannot receive the first codeword according to only part of the DCIs, and improves codeword transmission efficiency.
In one possible design, the terminal device may further receive first configuration information, and then determine information of the all layers according to the first configuration information, where the first configuration information is used to indicate the information of the all layers. Or, if the first information further indicates information of all layers, the terminal device may further determine the information of all layers according to the first information, where the first information is further used to indicate the information of all layers. Or the terminal device may further 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 a plurality of all layers, and the first information is also used to indicate information of one of the plurality of all layers. Or, the terminal device may further receive second information, and then determine the information of all the layers according to the first information and the second information, where the second information is used to indicate information of a second number of layers corresponding to the first codeword, and the information of all the 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 information of all layers corresponding to the first codeword, and receive the first codeword according to the information of all layers corresponding to the first codeword after receiving the first information. It is 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 a step and a method for determining the information of all layers of the first codeword, so that the above design provides a new scheme, which can enable the terminal device to determine the information of all layers, and solve the problem that the terminal device cannot accurately receive the first codeword when only receiving the first information, so as to improve the codeword transmission reliability.
In a possible design, when receiving a first codeword according to information of all layers, a terminal device may determine, according to the information of all layers, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, and receive the first codeword according to the index numbers of layers to which all modulation symbols are respectively mapped.
The above design provides a solution for receiving the first codeword by the terminal device according to the information of all layers. According to the scheme, the terminal equipment can receive the first code word according to the information of all layers corresponding to the first code word and the first information, the problem that the terminal equipment cannot accurately receive the first code word when only the first information is received is solved, and the code word transmission reliability is improved.
In a possible design, when determining the index numbers of the layers to which all modulation symbols corresponding to a first codeword are respectively mapped, the terminal device may determine the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to a modulation symbol set to which the modulation symbols in all modulation symbols belong and a first correspondence, where the first correspondence is a correspondence between each modulation symbol set in all modulation symbols and the index numbers of the layers included in the information of all layers.
According to the above, the terminal device may determine, according to the modulation symbol set to which the modulation symbols in all the modulation symbols belong and the first corresponding relationship, the index numbers of the layers to which all the modulation symbols corresponding to the first codeword are respectively mapped, where the index numbers may be used for the terminal device to receive the first codeword, and in the prior art, the terminal device may not accurately receive the index numbers of the layers to which all the modulation symbols are respectively mapped when only receiving the first information, thereby failing to accurately receive the first codeword.
In a possible design, when receiving a first codeword according to information of a first number of layers, a terminal device may determine, according to the information of the first number of layers corresponding to the first codeword, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped, and receive, by the terminal device, the first codeword according to the index numbers of the layers to which all modulation symbols are respectively mapped.
According to the above design, after receiving the first information, the terminal device may determine, according to the information of the first number of layers corresponding to the first codeword, the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the index numbers may be used for the terminal device to receive the first codeword, and in the prior art, the terminal device may map all modulation symbols corresponding to the first codeword onto all layers, so that the terminal device may not accurately map the index numbers of the layers to which all modulation symbols are respectively mapped when receiving only the first information, and therefore, the above design enables all modulation symbols corresponding to the first codeword to be mapped onto the layer indicated by each information, so that the terminal device may still accurately receive the first codeword when receiving part of information in a plurality of information, and thus, the codeword transmission reliability may be improved.
In a possible design, when determining, 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 may determine, according to a modulation symbol set to which the modulation symbols in all the modulation symbols belong and a second correspondence relationship, the index numbers of the layers to which all the modulation symbols corresponding to the first codeword are respectively mapped, where the second correspondence relationship is a correspondence relationship between each modulation symbol set in all the modulation symbols and the index numbers of the layers included in the information of all the layers.
According to the above design, the terminal device may determine, according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and the second correspondence, the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the index numbers may be used for the terminal device to receive the first codeword, and in the prior art, the terminal device may map all modulation symbols corresponding to the first codeword onto all layers instead of separately mapping onto a part of layers in all layers, so that the terminal device in the prior art does not provide a scheme for determining the index numbers, and therefore, in the above design, under the condition that the terminal device receives part of information in a plurality of information, the index numbers of the mapped layers and the mapping order and rule of the modulation symbols may still be determined, so that the first codeword may be accurately received, and the codeword transmission reliability may be improved.
In one possible design, the first information and the second information satisfy a first condition, the first condition including at least one of: the HARQ process identifier indicated by the first information is 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 information of a first number of layers corresponding to the first codeword indicated by the first information is different from the information of a 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 assignment indication information DAI included in the first information is the same as the DAI included in the second information; or the code word indication information included in the first information is the same as the code word indication information included in the second information; or, the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
According to the above design, the terminal device executes the communication method itself when meeting the first condition, otherwise, the terminal device does not execute the communication method, so that the above design can avoid that the terminal device needs to execute the communication method provided by the embodiment of the present application under the condition of receiving any control information, which causes inflexible system scheduling, and an implicit limited mode applying the first condition can enable the network device to flexibly perform scheduling selection of multiple control information indicating the same code word or multiple control information indicating different code words, and further, when the terminal device does not meet the first condition, determine the scheduling mode of the network device at this time.
In one possible design, the terminal device further receives third configuration information, where a second condition is satisfied among the third configuration information, the first information, and the second condition includes at least one of the following conditions: the third configuration information is used for indicating a first format, and 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 a first radio network identifier RNTI, and the RNTI scrambled with the first information and the RNTI scrambled with the second information are both the first RNTI; or the third configuration information is used to indicate a first control resource set, and both 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, 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. Thus, by setting the second condition, the other terminal device executes the communication method related to 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 related to itself 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, and the third configuration information may be sent by the network device. The implicit limiting mode of the second condition is applied, so that 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 further the terminal device cannot perform corresponding detection on the control information when the second condition is not met, thereby saving power.
In one possible design, the terminal device executes the communication method provided by the present application when determining that both the first condition and the second condition are satisfied. Or the terminal device executes the communication method related to the present application after determining that one of the first condition or the second condition is satisfied.
According to the above design, when the terminal device executes the communication method provided by the embodiment of the present application can be further flexibly configured, so as to avoid that the terminal device needs to execute the communication method provided by the embodiment of the present application under the condition of receiving any control information, which causes inflexible system scheduling and leads to low utilization rate of system resources.
In one possible design, the terminal device may further 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 number of layers is a part of all layers of the layers to which the modulation symbols corresponding to the first codeword are mapped.
According to the design, the network equipment can instruct the terminal equipment to receive the first code word according to the information of the first number of layers corresponding to the first code word, and flexible configuration of the receiving mode of the terminal equipment can be realized, so that the receiving mode of the terminal equipment can be determined according to the current system condition, and the code word receiving reliability of the terminal equipment is improved.
In a possible design, the terminal device may further 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 all layers, and the all layers are all the number of layers to which the modulation symbols corresponding to the first codeword are mapped.
According to the design, the network equipment can instruct the terminal equipment to receive the first code word according to the information of all layers corresponding to the first code word, and flexible configuration of the receiving mode of the terminal equipment can be realized, so that the receiving mode of the terminal equipment can be determined according to the current system condition, and the code word receiving efficiency of the terminal equipment is improved.
In one possible design, the terminal device may further send first notification information, where the first notification information is used to indicate that the terminal device is capable of receiving at least two pieces of information when the at least two pieces of information respectively indicate information of different layers of the same codeword.
According to the above design, the terminal device can inform the network device that the network device itself does not support different layers indicating the same codeword through a plurality of DCI through the first notification message, so that the network device can know the capability of the terminal device to determine whether to execute the communication method provided by the embodiment of the present application, so as to avoid sending the message under the condition that the terminal device does not support, thereby ensuring the transmission efficiency of the system.
In a possible design, the terminal device may further receive sixth configuration information, where the sixth configuration information is used to instruct the terminal device to receive the at least two pieces of information when the at least two pieces of information respectively indicate information of different layers of the same codeword. According to the above design, the terminal device may receive the first codeword according to the communication method provided in the embodiment of the present application after receiving the sixth configuration information, and may not receive the first codeword according to the communication method provided in the embodiment of the present application when not receiving the sixth configuration information, so that the network device may flexibly configure when the terminal device executes the communication method provided in the embodiment of the present application, and may determine the receiving mode of the terminal device according to the current system condition, and at the same time, may avoid that the terminal device needs to execute the communication method provided in the embodiment of the present application when receiving any control, which may increase power consumption of the terminal device.
In one 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, the maximum index number of the index numbers of all layers is N-1, and the index numbers of all layers are consecutive; 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, and the index numbers of all layers 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 consecutive.
According to the design, the terminal equipment can determine the index numbers of all the layers according to the number of all the layers, and the index numbers can be used for the terminal equipment to receive the first code word, so that the system signaling overhead can be reduced by determining the index numbers of all the layers according to the number of all the layers, and the system transmission efficiency can be improved.
In a possible design, if the number of all layers corresponding to the first codeword is q, the information of all layers includes layer a0Layer A1… and layer Aq-1Wherein A is0、A1… and Aq-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is q, the modulation symbol sets in all modulation symbols corresponding to the first codeword include a first modulation symbol set and a second modulation symbol set, and 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 includes: the modulation symbols in the first set of modulation symbols are mapped to layer A0The index number of a modulation symbol in the first modulation symbol set is q x i; alternatively, modulation symbols in the second set of modulation symbols are mapped to layer aq-1The index number of the modulation symbol in the second modulation symbol set is q × i + q-1; or, wherein i is 0 to
Figure BDA0001852857060000051
M is the number of all modulation symbols corresponding to the first codeword.
According to the above design, the terminal device can determine the index numbers of all layers according to the corresponding relationship between each modulation symbol set in all modulation symbols and the index numbers of the layers included in the information of all layers, and the index numbers can be used for the terminal device to receive the first codeword, so that the terminal device can still obtain the mapping mode of all modulation symbols through the corresponding relationship under the condition of receiving only part of the control information in the plurality of control information, and can receive the first codeword, and therefore, the above design can improve the codeword transmission reliability.
In a possible design, if the first number isp, the information of the first number of layers comprising layer B0Layer B1… and layer Bp-1In which B is0、B1. . . . And Bp-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and the corresponding relationship between each modulation symbol set in all modulation symbols and the index number of the layer included in the information of all layers may be set in the following manner: when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a 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, and modulation symbols in the first modulation symbol set are mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 modulation symbols in the first modulation symbol set are mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The 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, and modulation symbols in the first modulation symbol set are mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i +2, and the modulation symbol in the fourth modulation symbol set is mapped to layer B3The index number of the modulation symbol in the fourth modulation symbol set is p × i + 3; wherein i is 0 to
Figure BDA0001852857060000061
M is the number of all modulation symbols corresponding to the first codeword.
According to the design, the terminal equipment can conveniently determine the index numbers of all layers according to the corresponding relation between each modulation symbol set in all modulation symbols and the index numbers of the layers contained in the information of all layers, and the index numbers can be used for the terminal equipment to receive the first code word, so that the terminal equipment can still obtain the mapping mode of all modulation symbols through the corresponding relation under the condition of only receiving part of control information in a plurality of control information, and can receive the first code word, and the design can improve the code word transmission reliability.
In a second aspect, another resource determining method provided in the embodiments of the present application may be implemented by a network device.
The network device may be configured 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 is smaller than the number of all layers corresponding to the first codeword, the first number is greater than or equal to a positive integer of 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 all the layers, or all modulation symbols corresponding to the first codeword are mapped to the first number of layers.
In one possible design, the network device further sends second information indicating information of a second number of layers corresponding to the first codeword.
In one possible design, the network device may further send first configuration information, where the first configuration information is used to indicate information of the all layers; or, the first information is further used for indicating information of the all layers; or, the network device sends second configuration information, where the second configuration information is used to indicate information of multiple all layers, and the first information is also used to indicate information of one all layer in the information of multiple all layers; or, the network device sends second information, where the second information indicates 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. Through the method, the network equipment can enable the terminal equipment to determine the information of all layers corresponding to the first code word.
In a possible design, when a network device sends the first codeword, if all modulation symbols corresponding to the first codeword are mapped to all layers, the network device may further send information of all layers, where the information of all layers is used to indicate index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, and send the first codeword according to the index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped.
In a possible design, the network device may determine, according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a first corresponding relationship, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the first corresponding relationship is a corresponding relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
In a possible design, when a 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 determine, according to information of the first number of layers corresponding to the first codeword, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped, and send the first codeword according to index numbers of layers to which all modulation symbols are respectively mapped.
In a possible design, the network device may determine, according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a second correspondence relationship, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the second correspondence relationship is a correspondence relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
In a possible design, the network device may further 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, and the first number of layers is a part of the total number of layers to which the modulation symbols corresponding to the first codeword are mapped. Or, the network device may further 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 all layers, and the all layers are all the numbers of layers to which the modulation symbols corresponding to the first codeword are mapped. The network device may thus instruct the terminal device to receive the first codeword according to the information of the first number of layers via the fourth configuration information, or instruct the terminal device to receive the first codeword according to the information of all layers via the fifth configuration information.
In one possible design, the network device may further receive first notification information, where the first notification information is used to indicate that the terminal device is capable of receiving at least two pieces of information when the at least two pieces of information respectively indicate information of different layers of the same codeword. 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, sixth configuration information may be further sent, where the sixth configuration information is used to instruct a terminal device to receive at least two pieces of information when the at least two pieces of information respectively indicate information of different layers of a same codeword. Therefore, the network device can instruct the terminal device to receive the information of different layers of the same code word respectively indicated by the at least two pieces of information through the sixth configuration information, so that the terminal device is instructed to receive the first code word according to the communication method provided by the embodiment of the application.
In a third aspect, an embodiment of the present application provides a communication apparatus having a function of implementing a behavior of a terminal device in the first aspect or any one of the possible designs of the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In one possible design, the communication device may include a storage unit, a receiving unit, and a processing unit in its structure. The receiving unit may be configured to perform a receiving operation related to the terminal device in the first aspect or any one of the possible designs of the first aspect, for example, may be configured to receive the first information and the first codeword according to information of a first number of layers corresponding to the first codeword. The communication apparatus may further include a determining unit, configured to perform a determining operation performed by the terminal device in the first aspect or any one of the possible designs of the first aspect, for example, to determine information of all layers corresponding to the first codeword, and the receiving unit may further receive the first codeword according to the information of all layers.
In a fourth aspect, an embodiment of the present application provides another communication apparatus, where the communication apparatus has a function of implementing a behavior of a network device in the method provided in the second aspect or the second aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In one possible design, the communication device may include a transmitting unit and a storage unit in its structure. The memory unit may be used to store program instructions. The transmitting unit may be configured to perform a transmitting operation involved by the network device in the second aspect or any one of the possible designs of the second aspect, for example, may be configured to transmit the first information and the first codeword by the communication device. The communication apparatus may further include a determining unit configured to perform a determining operation performed by the network device in any one of the possible designs of the second aspect or the second aspect, such as determining layers to which all modulation symbols of the first codeword are respectively mapped according to information of the first number of layers or information of all layers.
In a fifth aspect, an embodiment of the present application provides a terminal device, where the terminal device has a function of implementing a behavior of the terminal device in the first aspect or any one of the possible designs of the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.
In one possible design, the structure of the terminal device includes a receiver and a processor, where the receiver is configured to support the terminal device to receive various instructions, such as the first DRX long cycle, the second DRX long cycle, the activation DRX indication, or the deactivation DRX indication configured by the base station for the terminal device. And the processor controls the terminal equipment to deactivate the DRX indication or receive paging in the second DRX long cycle according to the first DRX long cycle received by the receiver.
In a fifth aspect, embodiments of the present application provide a computer-readable storage medium for storing instructions that, when executed by a computer, may cause the computer to perform the functions involved in any one of the possible designs of the method embodiments of the first or second aspect.
In a sixth aspect, the present application provides a computer program product, which when executed by a computer, can enable the computer to perform the functions involved in any one of the possible designs of the method embodiments and the method embodiments of the first aspect or the second aspect.
In a seventh aspect, this application provides a chip, which may be coupled to a transceiver, and is configured to implement the functions involved in any one of the possible designs of the method embodiments and the method embodiments described in the first aspect or the second aspect.
In an eighth aspect, an embodiment of the present application provides a system, which includes the terminal device in any one of the possible designs of the third aspect or the third aspect, and the network device in any one of the possible designs of the fourth aspect or the fourth aspect.
Drawings
Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;
fig. 2 is a schematic architecture diagram of an NR wireless communication system according to an embodiment of the present disclosure;
fig. 3 is a schematic architecture diagram of a wireless communication system with multiple TRP transmissions according to an embodiment of the present application;
fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present application;
fig. 4A is a flowchart illustrating another communication method according to an embodiment of the present application;
fig. 5 is a schematic diagram of a layer mapping method for modulation symbols according to an embodiment of the present disclosure;
fig. 6 is a schematic flowchart of HARQ feedback according to an embodiment of the present application;
fig. 7 is a schematic diagram of another layer mapping method for modulation symbols according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of another communication device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present 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 objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments. In the description of the present application, the term "plurality" means two or more unless otherwise specified.
The following explains the words that the present application relates to or may relate to:
1. at least one means one, or more than one, i.e., including one, two, three, and more than one.
2. Carrying may mean that a certain message is used to carry certain information or data, or that a certain message is composed of certain information.
3. A channel may refer to a carrier carrying information, for example, a sending end may send a channel, and a receiving end may receive the channel, and then demodulate and decode information on the channel; the channel may also refer to a virtual channel in an uplink or downlink wireless propagation environment, where the channel is not carrying information but a virtual propagation path in a physical space.
4. A Codeword (CW), which may also be understood as a Transport Block (TB) in the embodiments of the present application. In this embodiment of the present application, the first codeword may be one or multiple codewords, for example, the first codeword includes 2 codewords, which is not limited in this application.
5. And a modulation symbol, wherein after the data is coded and modulated by a data sending end, a plurality of modulation symbols are formed, and the modulation symbols are information carrying the coded data. In this application, all modulation symbols formed after a codeword is encoded and modulated are referred to as all modulation symbols corresponding to the codeword. And a part of modulation symbols in all modulation symbols formed after the code words are coded and modulated are called as modulation symbols corresponding to the code words or modulation symbols corresponding to the code words.
6. And when the code word is transmitted, the modulation symbol corresponding to the code word can be mapped to different layers through layer mapping, and the layers and the antenna ports have corresponding relation, so that the modulation symbol is transmitted through the antenna ports corresponding to the layers. In this embodiment, the network device may indicate, to the terminal device, information of a layer corresponding to the codeword through the DCI, and the terminal device receives the codeword according to the information of the layer, for example, the DCI may notify the number of layers corresponding to the codeword and/or an index number of the layer. It should be understood that, in the embodiment of the present application, some of all layers to which all modulation symbols of a codeword are mapped may be indicated to a terminal device through one DCI. In the present application, all layers to which all modulation symbols of a codeword are mapped may be referred to as all layers corresponding to the codeword; and mapping all modulation symbols of the code word to partial layers of all layers, namely, a layer corresponding to the code word and a partial layer corresponding to the code word, or according to the number of the partial layers, referring the partial layers to an Nth number of layers corresponding to the code word, wherein the Nth number is equal to the number of the 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 index numbers of the layers, and indicate the layer to which the codeword is mapped to the terminal device. For example, the network device may carry the number in DCI sent to the terminal device to indicate the number of layers to which the codeword is mapped; the DCI may also carry indices of layers, such as indices of layer 0, layer 1, and layer 2, indicating that the codeword is mapped to three layers, i.e., layer 0, layer 1, and layer 2, such as indices of layer 1 and layer 3, indicating that the codeword is mapped to two layers, i.e., layer 1 and layer 3.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings. First, a wireless communication system provided in an embodiment of the present application is introduced, then a specific implementation manner of a communication method provided in an embodiment of the present application is introduced, and finally, a device and an apparatus for performing the communication method provided in an embodiment of the present application are introduced.
As shown in fig. 1, a wireless communication system 110 provided by the embodiment of the present application may include a terminal device 101 and a network device 102, where an application scenario of the wireless communication system 110 provided by the embodiment of the present application includes, but is not limited to, a 5th Generation (5G) system. Among them, the 5G system may also be referred to as an NR system.
Illustratively, the terminal device 101 may be a terminal (terminal), a Mobile Station (MS), a mobile terminal (mobile terminal), or the like, and the terminal device 101 is capable of communicating with one or more network devices of one or more communication systems and accepting network services provided by the network devices, including but not limited to the illustrated network device 102. The terminal device 101 in the embodiment of the present application may be, for example, a mobile phone (or referred to as "cellular" phone), a computer with a mobile terminal, and the like, and the terminal device 101 may also be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted mobile apparatus. The terminal apparatus 101 may also be a communication chip having a communication module.
The network device 102 may include a Base Station (BS), or a radio resource management device (rrm) for controlling the base station, and specifically, the network device 102 may be a base station in a transmission/reception node (TRP), a relay station (or relay device), an access point, a vehicle-mounted device, a wearable device, and a future 5G network or a future evolved Public Land Mobile Network (PLMN) network, such as an NR base station, which is not limited in the embodiments of the present disclosure.
It should be appreciated that the above-described 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 an NR, which may further include a new wireless access network 202, wherein interaction between the core network 201 of the NR and the new wireless access network 202 is achieved through an interface. In the NR scenario, the functional entities for implementing the communication method according to the embodiment of the present application may be a base station and a terminal. Specifically, the terminal device 101 according to the embodiment of the present application may include a terminal device connected to a base station connected to the new radio access network 202, for example, the terminal device 203 shown in fig. 2, where the terminal device 203 is connected to the access network base station 204 through a radio link, and the access network base station 204 may be a base station in the new radio access network 202; the terminal device 101 according to the embodiment of the present application may further include a terminal device connected to a relay, for example, the terminal device 205 shown in fig. 2, where the terminal device 205 is connected to the 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 according to the embodiment of the present application may be an access network base station 204 in a new radio access network 202 as shown in fig. 2, or may be a relay station 206 connected to the access network base station 204 as shown in fig. 2.
It should be understood that in the wireless communication system 110 according to the embodiment of the present application, the number of the network devices 102 may be one or more, and if the number of the network devices 102 is multiple, the network device 102 and the terminal device 101 may perform transmission through multiple TRP 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 a plurality of TRPs with different spatial positions and the terminal device 101, so as to improve the spatial interference resistance of the communication system. The ideal backhaul means that no time delay exists when information is interacted among the plurality of TRPs, and data or control information can be interacted rapidly and randomly at any time; the meaning of the non-ideal backhaul is that there is a time delay when information is exchanged among a plurality of TRPs, that is, information cannot be exchanged quickly and information can be exchanged only slowly.
For example, when TRP1, TRP2 performs multi-TRP transmission to terminal device 101, modulation symbols of a first Codeword (CW) to be transmitted to terminal device 101 may be mapped onto a plurality of layers (layers), such as layer 0, layer 1 and layer 2, wherein TRP1 may transmit first information, e.g., first DCI, to terminal device 101 for instructing to map modulation symbols of the first CW onto layer 0, layer 1, TRP2 may transmit second information, e.g., second DCI, to terminal device 101 for instructing to map modulation symbols of the first CW onto layer 2, and terminal device 101 performs reception of modulation symbols of the first CW on layer 0, layer 1 and layer 2 after receiving the first information and the second information, and then decodes the first CW.
Taking the wireless communication system 110 shown in fig. 1 as an example, as shown in fig. 4, a 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, where the first information is used to indicate information of a first number of layers corresponding to a 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, wherein all modulation symbols corresponding to the first codeword are mapped to all layers, and S104 is performed.
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 the present application, which differs from the embodiment shown in fig. 4 in that,
s103 a: 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.
S104 a: 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 information of all layers of the first codeword to the terminal device 101 through a plurality of control information (e.g., a plurality of DCI), if the number of all layers corresponding to the first codeword is greater than the first number of first codewords indicated by the first information, according to the above method, the terminal device 101 may receive the first information, determine information of all layers, and then receive the first codeword according to the information of all layers, where 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 information of all layers before or at the same time of receiving the first information, and in this embodiment, the time relationship between the terminal device 101 receiving the first information and determining the information of all layers is not limited. Alternatively, 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 layers. Thus, according to the steps shown in S101, S102, S103a-S104a, terminal device 101 is able to implement reception of the first codeword upon receiving only control information indicating the partial layer to which the first codeword corresponds.
It should be understood that, in the above embodiment, the first information may be DCI. The first information may be used to indicate information of a first number of layers, wherein the information of the layers includes, but is not limited to, the number of layers or an index number of the layers. As shown in fig. 5, if the network device 102 maps all modulation symbols (numbered 0 to 5, respectively) corresponding to the first codeword to layer 0, layer 1, and layer 2, where the network device 102 indicates layer 0 and layer 1 to the terminal device 101 through the first information, the first information may carry information indicating the first number is 2 and information indicating layer 0 and layer 1, or the first information may carry information indicating layer 0 and layer 1 but not information indicating the first number. At this time, the terminal device 101 may still determine that the first number is 2 according to the information of the indication layer 0 and the layer 1, or the first information may carry information indicating that the first number is 2, and at this time, the terminal device 101 determines the index number of the layer corresponding to the information of the first number 2, for example, the layer 0 and the layer 1, according to the predefined or the corresponding relationship between the number of the high layer signaling configuration and the index number of the layer.
It should be understood that the present application is not limited to the implementation sequence of the step of determining information of all layers by the terminal device 101 in the step shown in S104, and it is only one possible implementation manner to execute the determining step after S102 and S103 in the above fig. 4, and the terminal device 101 may also determine information of all layers 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 before the step of sending the first codeword by the network device 102 shown in S103, and receive the first codeword after receiving the first information.
In the embodiment, there are various ways for the terminal device 101 to determine the information of all layers corresponding to the first codeword, which are described below:
first, the network device 102 indicates information of all layers to the terminal device 101 through the first configuration information.
The network device 102 may send information indicating all layers, which includes the number of layers of all layers and/or index numbers indicating all layers, to the terminal device 101 carried in the first configuration information. Thus, after receiving the first configuration information, the terminal device 101 can determine 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 the first configuration information to the 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 for the first information or sending the first information.
In particular implementations, the first configuration information may carry all or a portion of the fields of higher layer signaling sent at the network device 102.
Network device 102 may configure terminal device 101 with first configuration information 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 in which the first codeword is transmitted, so that the network device 102 may enable the terminal device 101 to receive the codeword in the serving cell in which the first codeword is transmitted according to the communication method provided in 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 further set first configuration information for different hybrid automatic repeat request (HARQ) process identifiers, where the first configuration information sent by the network device 102 may also carry a HARQ process identifier set. The network device 102 may carry the HARQ process identifier corresponding to the first information in the first information sent to the terminal device 101, or the HARQ process identifier corresponding to the first information may also be determined according to a predefined rule. After receiving the first configuration information, terminal device 101 may determine that the HARQ process identifier carried by the first information belongs to the HARQ process identifier set matching in the first configuration information. If so, the terminal apparatus 101 uses the information of all layers indicated by the first configuration information as the information of all layers corresponding to the code word indicated by the first information. Therefore, the network device 102 may indicate, through the first configuration information, which information indicates that the code word is transmitted, that the terminal device 101 needs to receive the code word according to the communication method provided by the embodiment of the present application, and the code word indicated by the other information does not need to receive the code word by the terminal device 101 according to the communication method provided by the embodiment of the present application.
The network device 102 may further 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 after determining that the codeword indicated by the first information belongs to a codeword in the codewords corresponding to the first configuration information, the terminal device 101 uses information of all layers indicated by the first configuration information as information of all layers corresponding to the codeword, and receives the codeword according to the communication method provided in the embodiment of the present application. For other code words not configured with the first configuration information, the terminal device 101 is not required to receive the code words according to the communication method provided by the embodiment of the present application. For example, the codeword indication information of the codeword is generally 0 or 1, and if the network device 102 carries the codeword indication information 0 in the first configuration information, the terminal device 101 only receives the codeword whose codeword indication information is 0 according to the communication method provided in the embodiment of the present application. For another example, the number of code words in the code words is generally 1 or 2, and if the network device 102 carries the number of code words 1 in the first configuration information and the number of code words indicated by the first information sent by the network device 102 to the terminal device 101 is 1, the terminal device 101 receives the code words according to the communication method provided in the embodiment of the present application. If the number of the code words 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 code words according to the communication method provided in the embodiment of the present application.
The network device 102 may further set first configuration information for the DCI, for example, one or more DCI formats are carried in the first configuration information, so that after determining that the format of the first information belongs to a format in the DCI formats carried in the first configuration information, the terminal device 101 uses information of all layers indicated by the first configuration information as information of all layers corresponding to a codeword indicated by the DCI, and receives the codeword 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 that does not belong to the DCI carried by the first configuration information. For example, the DCI format carried by the first configuration information is "format 1_ 0", and after determining that the received DCI format of the first configuration information is the "format 1_ 0", the terminal device 101 receives the codeword according to the communication method provided in the embodiment of the present application. Alternatively, the network device 102 may also carry a radio network identity (RNTI) in the first configuration information, which indicates that the first configuration information is set for the DCI scrambled by the RNTI, so that the terminal device 101 uses information of all layers indicated by the first configuration information as information of all layers of a codeword corresponding to the RNTI-scrambled DCI. Alternatively, the network device 102 further indicates, by the first configuration information, a search space in which the DCI is located, and indicates that the first configuration information is set for the DCI detected in the search space, so as to enable the terminal device 101 to use information of all layers indicated by the first configuration information as information of all layers of a codeword corresponding to the DCI detected in the search space. Or, the network device 102 further indicates, by the first configuration information, the control resource set in which the DCI is located, and indicates that the first configuration information is set for the DCI detected in the control resource set, so as to enable the terminal device 101 to use information of all layers indicated by the first configuration information as information of all layers of a 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. Alternatively, if the correspondence between the number of higher layer signaling configurations and the index number of the layer is predefined or determined, that is, the correspondence between the terminal device 101 and the network device 102 is already determined, the network device 102 may indicate the number of all layers only by the first configuration information. The terminal apparatus 101 may also 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 not repeated, the terminal apparatus 101 may determine all the index numbers of all the layers according to the number of all the layers.
In the second mode, the network device 102 indicates information of all layers to the terminal device 101 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. Thus, after receiving the first information, the terminal apparatus 101 can determine the information of all layers based on the first information. Still taking fig. 5 as an example, the network device 102 may send information indicating that the number of all layers is 3 and/or information indicating layer 0, layer 1, and layer 2 to the terminal device 101, carried in the first information.
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 an antenna port bit field (antenna ports bit field) in the first information. For example, a column may be added to the information indicated in the existing antenna port bit field, and the column carries information indicating the number of all layers and/or information indicating the index numbers of all layers. Furthermore, the corresponding relation between the reference signal port number and the index number of the layer is predefined or configured by high-layer signaling. For example, the number of the reference signal port is an index number of a layer, and taking that the antenna port and the type of the reference signal are 1, and the maximum time domain occupied by the reference signal is 1 symbol as an example, a column of information may be added to the antenna port indication table shown in table 1 to indicate the number of all layers indicated by the antenna port. It is understood that at least one bit state value in the table has a correspondence with information of all layers. The corresponding relationship between all bit state values and all layer information may be configured for high layer signaling, or may be predefined. Or the corresponding relation between the partial bit state value and the information of all layers may be predefined and the corresponding relation between the partial bit state value and the information of all layers may be configured by high layer signaling. Or the partial bit state values may not correspond to the information of all layers. It can be understood that the bit state value 0 and the bit state corresponding to the bit number of 4 is 0000, and the bit state value 1 and the bit state corresponding to the bit number of 4 is 0001, that is, the bit number is m, and the bit state is a binary number of the bit state value of m bits. In addition, the parameter in table 1 may be a default (reserved), when the network device 102 indicates this parameter, it indicates that the network device 102 does not indicate reception of the same codeword through at least two DCIs, but indicates the terminal device 101 to perform reception of the first codeword through only one DCI.
Figure BDA0001852857060000141
TABLE 1
It should be understood that, according to the embodiment of the present application, information indicating the number of all layers may also be added to another type of antenna port indication table, for example, when the antenna port and the reference signal type are 1, the maximum time domain length occupied by the reference signal is 2 symbols, or when the antenna port and the reference signal type are 2, the maximum time domain length occupied by the reference signal is 1 symbol, or when the antenna port and the reference signal type are 2, the maximum time domain length occupied by the reference signal is 2 symbols, the antenna port indication table may also be added with information indicating the number of all layers, and a specific implementation manner thereof may refer to table 1.
Furthermore, it should be understood that the embodiment of the present application is not limited to the information indicating the number of all layers and/or the information indicating the index numbers of all layers being carried in the information indicated in the antenna port bit field in the manner shown in table 1, and the content of table 1 may be reduced or reassembled, or other information corresponding to the bit status value is carried, so as to indicate the information to the terminal device 101.
In addition, in a specific implementation, the information indicating the number of all layers and/or the information indicating the index numbers of all layers may also be carried in a first bit field added to the first information, and the length of the first bit field may be 2 bits (bits) or 3 bits. For example, as shown in tables 2 and 3, information of all layers may be indicated by a correspondence between bit state values and index numbers of all layers.
Bit state value Index number of all layers
0 0,1
1 2,3
2 0,1,3
3 0,1,2,3
TABLE 2
Bit state value Index number of all layers
0 0,1
1 2,3
2 0,3
3 0,1,2
4 0,1,3
5 0,2,3
6 1,2,3
7 0,1,2,3
TABLE 3
It is to be understood that the present application is not limited to the first bit field carrying the information indicating the number of all layers and/or the information indicating the index numbers of all layers in the manner shown in table 1, table 2, or table 3, and the content of table 1 may be reduced or reorganized, for example, only carrying the corresponding relationship between the bit state value and the information indicating the number of all layers in the first bit field, or the corresponding relationship between the bit state value and the information indicating the index numbers of all layers. It should be further understood that the contents of table 1, table 2 or table 3 may also be supplemented, for example, carrying information specifically indicating the index numbers of the first number of layers to which the first information corresponds.
It should be understood that if the network device 102 carries information indicating index numbers of all layers in the first information, the terminal device 101 may determine information of all layers according to the first information after receiving the first information. Or, if the correspondence between the number of the high-level signaling configuration and the index number of the level is predefined or determined, that is, the correspondence between the terminal device 101 and the network device 102 is already determined, the network device 102 may indicate the number of all levels only by the first information, and the terminal device 101 may also determine the index number of all levels only according to the number of all levels.
In the third embodiment, the network device 102 indicates information of a plurality of all layers in the second configuration information, and indicates one of the plurality of information of all layers to the terminal device 101 through the first information.
The network device 102 may send a plurality of pieces of information indicating the number of all layers and/or a plurality of 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 numbers of all layers to the terminal device 101 by being carried in the second configuration information. Before transmitting the first codeword, the network device 102 transmits first information corresponding to the first codeword to the terminal device 101, where information of one entire layer in the second configuration information is indicated in the first information, and the terminal device 101 may use the indicated information of all layers as 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, where the second configuration information table may indicate a correspondence between bit state values in at least one or all of the first information and information of all layers. The first information sent by the network device 102 may also carry bit status values for indicating information of all layers, and the terminal device 101 may be in the corresponding relationship indicated by the second configuration information. And determining the information of all layers corresponding to the first code word by the number of all layers and/or the index numbers of all layers corresponding to the bit state value indicated by the first information.
Bit state value Information of all layers of the second configuration information configuration
0 Information of the first full layer
1 Information of the second full layer
2 Information of the third overall layer
3 Of a fourth overall layerInformation
TABLE 4
If the first information indicates one of the information of all layers included in the second configuration information, for example, the first information sent by the network device 102 carries a bit status value "2". The terminal device 101 receives the first information, and may determine the number of all layers and/or the index numbers of all layers according to the information of the third all layers with the bit state value of "2" in table 4. For another example, the first information carries a bit state value of "3", and the terminal device 101 receives the first information, and may determine the number of all layers and/or the index numbers of all layers according to the information of the fourth all layers in table 4, where the bit state value is "3". For another example, the first information carries a number "0", and the terminal device 101 receives the first information, and may determine the number of all layers and/or the index numbers of all layers according to the information of the first all layers with a bit state value of "0" in table 4.
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 information of all layers according to the first information and the second configuration information. Take the example that the second configuration information configures all index numbers to include "0, 1, 2" and "0, 1". If the first information sent by the network device 102 carries the number "2", the terminal device 101 receives the first information, and may determine the number of all layers according to the index numbers of all layers numbered as "2" in table 4. Or, if the first information indicates one of the number of the plurality of total layers included in the second configuration information. If the correspondence between the number of the high-level signaling configuration and the index number of the level is predefined or determined, that is, the correspondence between the terminal device 101 and the network device 102 is determined, the network device 102 may indicate the number of the plurality of all levels only by the second configuration information, and indicate one of the number of the plurality of all levels by the first information, and the terminal device 101 may also determine the index number of all levels only according to the number of all levels.
In a fourth mode, the network device 102 indicates, to the terminal device 101, information of a second number of layers corresponding to the first codeword through the second information, where the information of all the layers includes information of the first number of layers indicated by the first information and information of the second number of layers.
The network device 102 may further transmit second information to the terminal device 101, where the second information may indicate information of other remaining layers than the first number of layers in the entire layers or may indicate information of other partial layers than the first number of layers in the entire layers. The terminal apparatus 101 can thus determine information of all layers from the information of the first number of layers indicated by the first information and the information of the second number of layers. The second information may be one or more DCIs other than the first information. In particular, a method of indicating information of the second number of layers in the second information may refer to a method of indicating 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 the first number of layers to be layer 0 and layer 1 (i.e., the first number is 2) to the terminal device 101 in the first information, and the network device 102 may also indicate layer 2 to the terminal device 101 through the second information. Optionally, the terminal apparatus 101 may further determine that the second number indicated by the second information is 1. Accordingly, the terminal apparatus 101 can determine that the number of all layers to which all modulation symbols corresponding to the first codeword are mapped is 3, based on the first information and the second information.
In addition, in one embodiment, the correspondence between the number of higher layer signaling configurations and the index number of the layer may be predefined or defined in advance, i.e. the correspondence has been determined between the terminal device 101 and the network device 102. The network device 102 indicates the first number by the first information and indicates the second number by the second information, and the terminal device 101 may also determine the number of all layers according to the first number and the second number. And the terminal device 101 determines the index numbers of all layers according to the number of all layers.
It should be understood that, in the embodiment of the present application, the network device 102 is not limited to indicate the information of all layers to the terminal device 101 through the first information and the second information, and the network device 102 may also indicate the information of all layers to the terminal device 101 through the first information, the second information and at least one other control information (e.g., DCI), so that the terminal device 101 may serve as the information of all layers according to an addition operation result of the information of all layers indicated by all DCIs corresponding to the received first codeword. The first information, the second information and at least one other control information all satisfy a first condition.
In a possible implementation manner, a corresponding relationship between the number of high-level signaling configurations and the index numbers of the layers is predefined or defined in advance, and when the terminal device 101 determines information of all the layers, the terminal device 101 determines the index numbers of all the layers according to the corresponding relationship and the number of all the layers. Specifically, the minimum index number in the index numbers of all layers is 0, the number of all layers corresponding to the first codeword is N, the maximum index number in the index numbers of all layers is N-1, and the index numbers of all layers are consecutive and increasing, for example, if the terminal device 101 determines that N is 4, the index numbers of all layers can be determined to be layer 0, layer 1, layer 2, and layer 3 according to the above sorting manner. Optionally, the indexes of all layers are continuously decreased, or discontinuously increased, or discontinuously decreased, which is not limited in this embodiment.
In another possible implementation, the corresponding relationship between the number of higher layer signaling configurations and the index number of the layer may be predefined or defined. The network device 102 may further indicate information of all layers to the terminal device 101, so that the terminal device 101 determines the information of all layers, where the information of all layers may include one or more of index numbers of all layers and/or the number of all layers corresponding to the first codeword. For example, the network device 102 may carry information of all layers in the aforementioned first configuration information or first information. Alternatively, the network device 102 may carry information of the second number of layers in the second information, and determine information of all layers by the terminal device 101 according to the information of the first number of layers and the information of the second number of layers.
In addition, the information of all layers may include a minimum index number and the number of all layers corresponding to the first codeword, and the index numbers of all layers are consecutive and increasing. Optionally, the indexes of all layers are continuously decreased, or discontinuously increased, or discontinuously decreased, which is not limited in this embodiment. For example, the number N of all layers is 3, and the minimum index number among all layers is 1, so that it can be determined that the index numbers of all layers are layer 1, layer 2, and layer 3. And the terminal equipment determines other index numbers except the minimum index number in the index numbers of all the layers according to the minimum index number and the number of all the layers corresponding to the first code word.
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 consecutive and increasing. Optionally, the indexes of all layers are continuously decreased, or discontinuously increased, or discontinuously decreased, which is not limited in this embodiment. For example, the number N of all layers is 3, and the maximum index number among all layers is 3, so that it can be determined that the index numbers of all layers are layer 1, layer 2, and layer 3. And the terminal equipment determines other index numbers except the maximum index number in the index numbers of all the layers according to the maximum index number and the number of all the layers corresponding to the first code word.
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 in a case where it is determined that a specific condition is satisfied.
Specifically, the specific condition includes a first condition and/or a second condition.
It should be understood that according to the method provided in this embodiment of the present application, if the first information and the second information respectively indicate different layers to which modulation symbols corresponding to the first codeword are mapped, the terminal device 101 may receive the first codeword according to the communication method provided in this embodiment of the present application. The terminal device 101 may determine, according to a first condition, whether a codeword indicated by both the first information and the second information is a first codeword, if the first condition is satisfied, it indicates that both the first information and the second information indicate the first codeword, otherwise, it indicates that both the first information and the second information indicate different codewords, and at this time, the codeword is not received according to the method provided in the embodiment of the present application.
In the following, the first condition is described by way of example, and may comprise at least one of the following conditions:
first, the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
In order to save downlink system resources, since it is the transmission of one codeword, there is generally a partial overlap or a complete overlap of time-frequency domain resources occupied by the transmissions of different layers of the same codeword, for example, both time domain resources and frequency domain resources overlap. Therefore, if there is no overlap between the time-frequency resources indicated by the first information and the second information, it indicates that the first information and the second information respectively indicate different code words and transmit different information. Therefore, if the terminal device 101 determines that the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information. The terminal device 101 may receive the codeword according to the communication method provided in 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.
Secondly, the HARQ process identifier indicated by the first information is the same as the HARQ process identifier indicated by the second information.
In NR, the same HARQ process identity indicates the same data buffer. Therefore, if the time-frequency resource indicated by the first information overlaps (including completely overlapping or partially overlapping) the time-frequency resource indicated by the second information, when the HARQ process identifier indicated by the first information is the same as the HARQ process identifier indicated by the second information, it can be stated 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 in 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.
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 (DMRSs) corresponding to different antenna port numbers correspond to different precoding matrices. The DMRSs corresponding to different antenna port numbers may also correspond to time-frequency resources of different DMRSs. There may also be a correspondence between different antenna port numbers and the index numbers of the layers. Therefore, when there is an overlap between the time-frequency domain resources indicated by the first information and the time-frequency domain resources indicated by the second information, and when the antenna port indicated by the second information is different from the antenna port indicated by the first information, the codewords indicating the first information and the second information are the same codeword, and at this time, the terminal device 101 receives the codewords according to the communication method provided in 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.
Fourthly, 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 layers may include index numbers of the layers, and the other terminal device 101 may determine the information of the layers when the codeword is mapped to different layers. Under the condition that the time-frequency domain resources indicated by the first information and the time-frequency domain resources indicated by the second information are overlapped, if the index number of the layer corresponding to the first code word indicated by the first information is the same as the index number of the layer corresponding to the first code word indicated by the second information, the first information and the second information respectively indicate different code words. 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. On the contrary, if the index number of the layer corresponding to the first codeword indicated by the first information is different from the index number of the layer corresponding to the first codeword indicated by the second information, the terminal device 101 may receive the codeword according to the communication method provided in the embodiment of the present application.
Fifth, the 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 the DCI may be used to indicate whether the data indicated by the DCI is first transmission data, and the NDI may be 0 or 1, for example, when the NDI of the first transmission is 0 and the NDI of the second transmission is 1, the data is retransmission data of the first transmission. It is to be understood that if the first information includes a different NDI than the second information, it indicates that the first information and the second information respectively indicate different codewords or retransmission of the same codeword. 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 apparatus 101 may receive the codeword according to the communication method provided in the embodiment of the present application.
Sixthly, Downlink Assignment Indicator (DAI) included in the first information is the same as the DAI included in the second information.
The DCI may include a count downlink assignment indicator (C-DAI) and/or a total downlink assignment indicator (T-DAI), the C-DAI having a value of 1,2, 3, or 4, and the T-DAI having a value of 1,2, 3, or 4.
When the first information and the second information only comprise C-DAI, if the C-DAI comprised by the first information is the same as the C-DAI comprised by the second information, the code words indicated by the first information and the second information are the same code words. The terminal device 101 may receive the codeword according to the communication method provided in 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 comprise T-DAIs, if the T-DAIs comprised by the first information are the same as the T-DAIs comprised by the second information, the codewords indicated by the first information and the second information are the same codewords. The terminal device 101 may receive the codeword according to the communication method provided in 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 both comprise C-DAI and T-DAI, if the C-DAI comprised by the first information is the same as the C-DAI comprised by the second information, and the T-DAI comprised by the first information is the same as the T-DAI comprised by the second information, it is indicated that the code words indicated by the first information and the second information are the same code word. The terminal device 101 may receive the codeword according to the communication method provided in 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 does not receive the codeword according to the communication method provided by the embodiment of the present application.
Seventh, the codeword indication information included in the first information is the same as the codeword indication information included in the second information.
The codeword indication 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 is determined 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 in 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 above first condition is only an example, and the present application is not limited to use one of the above conditions as the first condition, and a combination of a plurality of the above conditions may also be used as the first condition, for example, use the above first condition and a combination of the above second condition, third condition, fourth condition, fifth condition, sixth condition or seventh condition as the first condition, or use a 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 further receive third configuration information, and determine whether the third configuration information, the first information, and the second information satisfy a second condition, where when the second condition is satisfied, the terminal device 101 may receive the first codeword according to the communication method provided in the embodiment of the present application, and otherwise, the terminal device does not receive the first codeword according to the communication method provided in the embodiment of the present application. The third configuration information may be sent by the network device 102, so that the network device 102 may also control whether the terminal device 101 receives the first codeword according to the communication method provided in the embodiment of the present application through the third configuration information.
The second condition, which may include at least one of the following conditions, is described below by way of example:
the first and third configuration information are 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 DCI format 1_1, and the terminal apparatus 101 determines that the second condition is satisfied only when the first information and the second information are both DCI of 1_1 format. The third configuration information may carry information of one DCI format 1_1, so as to indicate DCI formats of the first information and the second information. Accordingly, the network device 102 may instruct the terminal device 101 to determine whether to perform receiving of the codeword according to the communication method provided in the embodiment of the present application according to the formats of the first information and the second information.
Second, the third configuration information is used to indicate a first RNTI, and the RNTI scrambled the first information and the RNTI scrambled the second information are both the first RNTI.
For example, if the third configuration information indicates the first RNTI, the terminal apparatus 101 may perform receiving of the codeword according to the communication method provided in the embodiment of the present application only when it is determined that the RNTI in which the first information is scrambled and the RNTI in which the second information is scrambled are both the first RNTI. Accordingly, the network device 102 may instruct the terminal device 101 to determine whether to perform the reception of the codeword according to the communication method provided in the embodiment of the present application, according to the RNTI scrambled first information and the RNTI scrambled second information.
Third, the third configuration information is used to indicate a first control-resource set (core set), where both 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 further indicate the first control resource set through the third configuration information, and when it is determined that the resource where the first information is located and the resource where the second information is located both belong to the first control resource set, the terminal device 101 executes receiving of the codeword according to the communication method provided in the embodiment of the present application. Otherwise, the codeword is not received according to the method provided by the embodiment of the application.
Fourthly, the third configuration information is used for indicating 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, and the terminal device 101 executes receiving of the codeword according to the communication method provided in the embodiment of the present application only when both the search space where the first information is located and the search space where the second information is located belong to the first search space, otherwise, does not execute receiving of the codeword according to the method provided in the embodiment of the present application.
It should be understood that the setting of the above second condition is only an example, and the present application is not limited to one of the above conditions as the second condition, and a combination of a plurality of the above conditions may also be used as the second condition. For example, taking the combination of all the above conditions as the second condition, when the third configuration information, the first information, and the second information satisfy all the above conditions, the terminal apparatus 101 receives the codeword according to the communication method provided by the embodiment of the present application.
It should be further understood that, in the embodiment of the present application, the above first condition and the second condition may be set separately, for example, the terminal device 101 may receive the codeword according to the communication method provided in the embodiment of the present application when the first condition is satisfied, or the terminal device 101 may receive the codeword according to the communication method provided in the embodiment of the present application when the second condition is satisfied. The first condition and the second condition may also be set simultaneously, so that the terminal device 101 receives the codeword according to the communication method provided in the embodiment of the present application only when the first condition and the second condition are satisfied simultaneously.
In implementation, if terminal device 101 receives first information and second information, where the first information and the second information respectively indicate different layers of the first codeword, terminal device 101 may perform HARQ feedback for a decoding result of the first codeword, and does not perform HARQ feedback for the first information and the second information respectively to save signaling overhead. Specifically, the terminal device 101 may send Acknowledgement (ACK) information to the network device 102 after successfully receiving the first information and the first codeword indicated by the second information, or send Negative Acknowledgement (NACK) information to the network device 102 if the terminal device does not successfully receive the first codeword.
As shown in fig. 6, an embodiment of the present application provides a HARQ feedback method, which includes the following steps:
s201: the network device 102 sends first information and second information to the terminal device 101, where the first information is used to indicate a first number of layers corresponding to the first codeword, and the second information is used to indicate a second number of layers corresponding to the first codeword;
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 apparatus 101 may determine that the first information and the second information indicate different layers of the first codeword after determining that the first condition and/or the second condition are satisfied, and the first condition and the second condition may be set as described in the foregoing section;
s204: terminal device 101 sends HARQ feedback information to network device 102 according to the decoding result of the first codeword, and does not send HARQ information for the first information and the second information respectively; if the terminal device 101 successfully receives the first codeword, 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 a plurality of indication DCIs and the plurality of DCIs indicate different layers of the same codeword, terminal device 101 may feed back HARQ information corresponding to the number of codewords according to the decoding result of the codeword, where, for example, the number of codewords is 1, the number of HARQ information is 1, and, for example, the number of codewords is 2, the HARQ information is 2, so as to avoid feeding back HARQ information for the plurality of DCIs, so as 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 respectively transmitted by multiple TRPs in multiple TRP transmission to the terminal device 101, for example, as shown in fig. 3, the terminal device 101 may also perform the steps shown in S202 to S204 after receiving the first information transmitted by the TRP1 and the second information transmitted by the TRP 2.
It should be further understood that the number of bits in one HARQ information herein may be 1bit or C bits. If the terminal device is not configured with the HARQ feedback corresponding to the code block group, the bit number in one HARQ information is 1 bit. If the terminal device is configured with HARQ feedback corresponding to the code block group, and the number of code words including the code block group is C, the number of bits in one HARQ information is C bits.
Optionally, if the terminal device is configured by the network device to feed back HARQ from the dynamic HARQ codebook, the terminal device determines the bit number of HARQ feedback information by using the method in this embodiment. If the terminal device is configured by the network device to feed back HARQ from the semi-static HARQ codebook, the terminal device does not need to determine the number of bits of HARQ feedback information by using the method in this embodiment.
In this embodiment, when the network device 102 sends the first codeword, if all modulation symbols corresponding to the first codeword are mapped to all layers, and information of all layers is sent to the terminal device 101 through the first configuration information or the first information, or second information is sent to the terminal device 101, the terminal device 101 determines information of all layers according to the first information and the second information, where the information of all layers includes index numbers of all layers, and then the terminal device 101 may determine index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the information of all layers, and then receives the first codeword according to the index numbers of layers to which all modulation symbols are respectively mapped.
In the above process, the network device 102 may determine, according to the information of all layers, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, and then map all modulation symbols to the layers according to the index numbers of the layers to which all modulation symbols are respectively mapped.
For example, when determining the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the information of all layers, the network device 102 and the terminal device 101 may first determine a modulation symbol set to which each modulation symbol belongs and determine a first corresponding relationship, and then determine the index number of the layer to which each modulation symbol is mapped according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and the first corresponding relationship, where the first corresponding relationship is the corresponding relationship between each modulation symbol set in all modulation symbols and the index numbers of the layers included in the information of all layers.
Wherein the number of all layers corresponding to the first codeword is q, and the information of all layers includes layer A0Layer A1… and layer Aq-1Wherein A is0、A1… and Aq-1For the index number of the layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is q, the modulation symbol sets in all modulation symbols corresponding to the first codeword include a first modulation symbol set and a second modulation symbol set, and the first correspondence relationship may include:
mapping modulation symbols in a first set of modulation symbols to layer A0The index number of the modulation symbol in the first modulation symbol set is q x i;
mapping modulation symbols in the second set of modulation symbols to layer Aq-1The index number of the modulation symbol in the second modulation symbol set is q + i + q-1;
wherein i is 0 to
Figure BDA0001852857060000221
M is the number of all modulation symbols corresponding to the first codeword; or, i is 0 to
Figure BDA0001852857060000222
M is the number of all modulation symbols corresponding to the first codeword,
Figure BDA0001852857060000223
presentation pair
Figure BDA0001852857060000224
Carrying out upward rounding operation; or i is 0 to
Figure BDA0001852857060000227
M is the number of all modulation symbols corresponding to the first codeword,
Figure BDA0001852857060000225
Figure BDA0001852857060000226
indicating that a rounding up operation is performed on M/q.
Still taking fig. 5 as an example, when all modulation symbols (numbered 0 to 5 respectively) corresponding to the first codeword are mapped to layer 0, layer 1 and layer 2, at this time, M is 6, q is 3, i is 0,1, so that, according to the above method, the network device 102 and the terminal device 101 may determine that the number of all layers corresponding to the first codeword is 3, 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, the modulation symbols in the second modulation symbol combination are mapped to layer 2, and the modulation symbols in the second modulation symbol set include modulation symbol 2 and modulation symbol 5. It is understood that when q is greater than 2, mapping of other q-2 symbol sets to modulation symbols to layer a is also includedq-1-xThe index number of the modulation symbol in the xth modulation symbol set is q × i + x-1, which is not described herein again.
In this embodiment, when the network device 102 sends the first codeword, if all modulation symbols corresponding to the first codeword are mapped to the first number of layers, the terminal device 101 may determine, according to information of the first number of layers, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, and then receive the first codeword according to the index numbers of the layers to which all modulation symbols are respectively mapped.
In the above process, the network device 102 may determine, according to the information of the first number of layers, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, and then map all modulation symbols to the layers according to the index numbers of the layers to which all modulation symbols are respectively mapped.
Specifically, when determining the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the information of the first number of layers, the network device 102 and the terminal device 101 may first determine a modulation symbol set to which each modulation symbol belongs and determine a second correspondence, and then determine the index number of the layer to which each modulation symbol is mapped according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and the second correspondence, where the first correspondence is the correspondence between each modulation symbol set in all modulation symbols and the index numbers of the layers included in the information of all layers.
For example, if the first number indicated by the first information (i.e. 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 B0Layer B1… and layer Bp-1In which B is0、B1。。。。And Bp-1For 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 relationship may include:
when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a Alternatively, the first and second electrodes may be,
when p is 2, all modulation symbols corresponding to the first codeword comprise a first modulation symbol set and a second modulation symbol set, and the modulation symbols in the first modulation symbol set are mapped to the layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The index number of the modulation symbol in the second modulation symbol set is p × i + 1; alternatively, the first and second electrodes may be,
when p is 3, all modulation symbols corresponding to the first codeword comprise a first modulation symbol set and a second modulation symbol set, and the modulation symbols in the first modulation symbol set are mapped to the layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The index number of the modulation symbols in the second modulation symbol set is p x i +1, and the modulation symbols in the third modulation symbol set are mapped to layer B2The index number of the modulation symbol in the second modulation symbol set is p × i + 2; alternatively, the first and second electrodes may be,
when p is 4, all modulation symbols corresponding to the first codeword comprise the first modulation symbol set and the second modulation symbol setA set of modulation symbols, the modulation symbols in the first set of modulation symbols being mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The index number of the modulation symbols in the second modulation symbol set is p x i +1, and the modulation symbols in the third modulation symbol set are mapped to layer B2The index number of the modulation symbols in the second set of modulation symbols is p x i +2, and the modulation symbols in the third set of modulation symbols are mapped to layer B3The index number of the modulation symbol in the second modulation symbol set is p × i + 3;
wherein i is 0 to
Figure BDA0001852857060000231
M is the number of all modulation symbols corresponding to the first codeword; or, i is 0 to
Figure BDA0001852857060000232
M is the number of all modulation symbols corresponding to the first codeword,
Figure BDA0001852857060000233
presentation pair
Figure BDA0001852857060000234
Carrying out upward rounding operation; or i is 0 to
Figure BDA0001852857060000235
M is the number of all modulation symbols corresponding to the first codeword,
Figure BDA0001852857060000236
indicating that the rounding up operation is performed on M/p.
It should be understood that the above second correspondence relationship is only an example, and the application is not limited to p being 1,2, 3 or 4, and p may be an integer greater than 4.
As shown in fig. 7, if the first number of layers is layer 0 and layer 1, when all modulation symbols (numbered 0 to 5, respectively) corresponding to the first codeword are mapped to layer 0 and layer 1, M is 6, p is 2, i is 0,1,2, and thus, according to the above method, the network device 102 and the terminal device 101 may 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, a modulation symbol in the first modulation symbol set is mapped to layer 0, a modulation symbol in the first modulation symbol set includes modulation symbol 0, modulation symbol 2, and modulation symbol 4, a modulation symbol in the second modulation symbol combination is mapped to layer 1, and a modulation symbol in the second modulation symbol set includes modulation symbol 1, modulation symbol 3, and modulation symbol 5.
When the at least two DCIs indicate different layer transmissions 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 modulation symbols of the first codeword are mapped on the layer indicated by each DCI, so that by applying the implementation manner in this embodiment, the terminal device can still receive all modulation symbols when only one DCI is received, thereby improving the accuracy of information reception.
For example, if the index number of the layer indicated by the second information is layer 2 shown in fig. 6, the network device 102 may further map all modulation symbols to layer 2, and indicate layer 2 to the terminal device 101 through the second information, so that after receiving the first information and the second information, the terminal device 101 may 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 modulation symbols of the first codeword on the first number of layers indicated by the first information with all 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 to combine the demodulated coded sequence of all modulation symbols of the first codeword on the first number of layers indicated by the first information with the demodulated coded sequence of all modulation symbols of the first codeword on the second number of layers indicated by the second information, and then perform data decoding.
Optionally, all of the first codewordThe mapping of partial modulation symbols to the first number of layers may also be determined according to table 5. Wherein the content of the first and second substances,
Figure BDA0001852857060000241
number of total modulation symbols for the first codeword, d(0)(i) Mapping the ith modulation symbol before the layer, wherein i is the index number of the modulation symbol, x(A0)(i) Mapping to layer A after layer mapping0I is 0 or more and 0 or less
Figure 2
The count value of (2).
Figure BDA0001852857060000243
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. Wherein the content of the first and second substances,
Figure BDA0001852857060000244
number of total modulation symbols for the first codeword, d(0)(i) Mapping the ith modulation symbol before the layer, wherein i is the index number of the modulation symbol, x(A0)(i) Mapping to layer A after layer mapping0Of the ith modulation symbol, x(B0)(i) To map to layer B after layer mapping0I is 0 or more and 0 or less
Figure BDA0001852857060000245
The count value of (2). It can be understood that when the network device sends the first information and the second information, the network device needs to perform two separate layer mappings for the first codeword before sending the first codeword.
Figure BDA0001852857060000251
TABLE 6
In this embodiment, the network device 102 may further control, through the configuration information, whether the terminal device 101 executes the communication method provided in this embodiment.
For example, the network device 102 may further send fourth configuration information to the terminal device 101, where the fourth configuration information is used to indicate that the layer to which all modulation symbols corresponding to the first codeword are mapped is part of all layers, which is indicated by the first information. Therefore, after receiving the fourth configuration information, the terminal device 101 may determine that the first number is smaller than the number of all layers according to the fourth configuration information, and then the terminal device 101 may receive the first codeword according to the information of the first number of layers corresponding to the first codeword according to the step shown in S103.
For example, the network device 102 may further send fifth configuration information to the terminal device 101, where the fifth configuration information is used to indicate that the layers to which all modulation symbols corresponding to the first codeword are mapped are all layers, so that after receiving the fifth configuration information, the terminal device 101 determines information of all layers and receives codewords on all layers according to the information of all layers, for example, the terminal device 101 may receive the first codeword according to the information of all layers according to the step shown in S103 a.
Illustratively, the network device 102 may further send sixth configuration information to the terminal device 101, for instructing the terminal device to receive the at least two pieces of information when the at least two pieces of information respectively indicate information of different layers of the same codeword. Thus, the network device 102 may control the terminal device 101 to receive the same codeword according to at least two information, for example, the terminal device 101 may receive the first codeword according to the information of the first number of layers corresponding to the first codeword according to the step shown in S103. When the terminal device 101 does not receive the sixth configuration information or receives information of different code words that the configuration information is used to indicate the terminal device to indicate at least two pieces of information respectively indicate, the terminal device 101 does not use the communication method provided in the embodiment of the present application to receive the code words.
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 part of the fourth configuration information, fifth configuration information and sixth configuration information, such as sending the fourth configuration information and sixth configuration information, or sending the fifth configuration information or sixth configuration information to the terminal device 101.
In addition, in implementation, the terminal device 101 may also report, to the network device 102, whether the terminal device 101 itself supports multiple pieces of control information (such as DCI) for the same codeword, for example, the terminal device 101 may send first notification information to the network device 102, and indicate that the terminal device 101 can receive at least two pieces of information of different layers of the same codeword, where the at least two pieces of information respectively indicate, so that the network device 102 may send the first information and/or the second information to the terminal device 101 after receiving the first notification information sent by the terminal device 101, and receive the first codeword by the terminal device 101 according to the communication method provided in the embodiment of the present application, for example, the terminal device 101 may receive the first codeword according to the information of the first number of layers corresponding to the first codeword according to the step shown in S103. Otherwise, under the condition that the network device 102 does not receive the first notification information sent by the terminal device 101 or the terminal device 101 reports that the terminal device 101 does not support multiple pieces of control information for the same codeword, the network device 102 may not send the first information to the terminal device 101, and at this time, the terminal device 101 does not execute the communication method provided in the embodiment of the present application. Optionally, the plurality of control information herein need to satisfy the first condition and/or the second condition, and for the description of the first condition and the second condition, reference is made to the foregoing, and details are not repeated here.
The scheme provided by the embodiment of the present application is introduced above mainly from the perspective of interaction between network elements. It is understood that each communication device, such as a terminal equipment, a base station, etc., contains corresponding hardware structures and/or software modules for performing each function in order to realize the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware, computer software, or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
Fig. 8 shows a schematic diagram of a possible structure of the communication device according to the above embodiment. The communication apparatus 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 information transceiving between the communication apparatus 800 and the terminal device 101 in the above-described embodiment, and to support radio communication between the communication apparatus 800 and other terminal devices, base stations, or communication devices. The controller/processor 802 performs various functions for communicating with the terminal device 101. In the uplink, uplink signals from the terminal device 101 are received via the antenna, demodulated by the receiver 801, and further processed by the controller/processor 802 to recover traffic data and signaling information sent by the terminal device 101. On the downlink, traffic data and signaling messages are processed by controller/processor 802 and conditioned by transmitter 801 to generate a downlink signal, which is transmitted via the antenna to terminal device 101. Controller/processor 802 also performs the processes of fig. 4 related to network device 102 and/or other processes for network device 102 performing the techniques described herein, e.g., for determining an index number for a first number of layers and/or for determining an index number for all layers. The memory 803 is used for storing program codes and data of the communication apparatus 800, for example, data of the first corresponding relationship, the second corresponding relationship, and the like provided by the embodiments of the present application can be stored. The communication unit 804 includes, but is not limited to, a fiber link interface, an ethernet interface, a copper wire interface, etc., and may be used to support the communication device 800 in communication with other network entities, and with network entities located in a core network.
Illustratively, the transmitter/receiver 801 may be configured to perform the steps shown as S101 and S103 in fig. 4. 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 configured to perform the steps of receiving HARQ feedback information as shown in S201 in fig. 6 and performing the steps shown in S204. The transmitter/receiver 801 may further be configured to send the second information, the first configuration information, the third configuration information, the fourth configuration information, the fifth configuration information, or the sixth configuration information referred to in this application, or a combination of the above information, or other information, data, and/or messages that need to be sent to the terminal device 101 in this application, to the terminal device 101. The transmitter/receiver 801 may also be configured to receive first notification information sent by the terminal apparatus 101 according to the embodiment of the present application.
The present application is not limited to the connection medium between the transmitter/receiver 801, the controller/processor 802, the memory 803 and the communication unit 804, for example, the components may be connected via a bus (bus) structure or other medium. 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 is a simplified schematic diagram of a possible design structure of the communication device 900 according to the above embodiment, and the communication device 900 may be used to implement the functions of the terminal device 101 according to 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 condition (e.g., analog convert, filter, amplify, and upconvert, etc.) the output samples and generate an uplink signal, which is transmitted via an antenna to the network device 102 described in the above embodiments. On the downlink, the antenna receives the downlink signal transmitted by the network device 102 in the above-described embodiment. Receiver 902 conditions (e.g., filters, amplifies, downconverts, and digitizes, etc.) the received signal from the antenna and provides input samples. In modem processor 905, an encoder receives traffic data and signaling messages to be sent on the uplink and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages. The modulator further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. A demodulator processes (e.g., demodulates) the input samples and provides symbol estimates. The decoder processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages that are sent to the communication device 900. The encoder, modulator, demodulator, and decoder may be implemented by a combined modem processor 1105. These elements are processed in accordance with the radio access technology employed by the radio access network (e.g., the access technologies of LTE and other evolved systems).
The controller/processor 903 may be configured to control and manage actions of the communication device 900, and to perform processing operations performed by the terminal device 101 in the above embodiments, for example, to determine, according to information of all layers, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped and/or other processes of the technology described in this application. The controller/processor 903 may also be used to perform the step shown as S203 in fig. 6. The transmitter 901 and the receiver 902 perform wireless communication with the communication device 900. As an example, the transmitter 1901 may also be used to perform the step illustrated as S204 in fig. 6. The transmitter 1901 may also be used for the communication device 900 to send the first notification information to the network device 102 according to the embodiment of the present application. The receiver 902 is operable to support the terminal device 101 to perform the operation of receiving the first information in step S102 and the operation of receiving the first codeword in S104 in fig. 4. 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 further configured to enable the terminal device 101 to perform the step shown as S202 in fig. 6. The receiver 902 may also be configured to receive part or all of the second information, the first configuration information, the second configuration information, the third configuration information, the fourth configuration information, the fifth configuration information, or the sixth configuration information sent by the network device 102, and receive information, data, and/or messages sent by other network devices 102. The memory 904 is used for storing program codes and data for the terminal device 101, for example, data such as the first corresponding relation and the second corresponding relation provided by the embodiment of the present application, and data and information transmitted by other network devices 102, and the controller/processor 903 may call the program codes in the memory 904 to perform the processing operations performed by the terminal device 101 provided by the embodiment of the present application.
The present application is not limited to the connection medium between the transmitter 901, the receiver 902, the controller/processor 903, the memory 904, and the modem processor 905, for example, which may be connected via a bus structure or other medium. The transmitter 901, receiver 902, controller/processor 903, memory 904, and modem processor 905 may be separate or integrated on a single chip.
It should be understood that the above structures of the communication apparatus for implementing the network device 102 and the terminal device 101 provided in the embodiments of the present application are only examples, and the network device 102 and/or the terminal device 101 provided in the embodiments of the present application may also be implemented by a modular structure.
As shown in fig. 10, a modular communication device 1000 provided in an embodiment of the present application may include a receiving unit 1001, a processing unit 1002, and a storage unit 1004.
If the communication apparatus 1000 is a terminal device, the receiving unit 1001 may be configured to perform a receiving process related to the terminal device 101 in this embodiment, for example, perform an operation of receiving the first information in step S102 and an operation of receiving the first codeword in step S104 in fig. 4. The communication device may further comprise a storage unit 1004 for storing program codes and data, which may be called by the receiving unit 1001 and/or the processing unit for performing the respective processing operations.
The receiving unit 1001 may also be used to support the terminal apparatus 101 to perform steps S102 and S104 in fig. 4A. The receiving unit 1001 is also used to support the terminal apparatus 101 to perform the steps shown as S202 in fig. 6. The receiving unit 1001 may further be configured to receive part or all of the second information, the first configuration information, the second configuration information, the third configuration information, the fourth configuration information, the fifth configuration information, or the sixth configuration information sent by the network device 102, and receive information, data, and/or messages sent by other network devices 102. The processing unit 1002 may be configured to execute a processing procedure related to the terminal device 101 in this embodiment of the application, and specifically, the processing unit 1002 may be configured to execute a step of determining information of all layers in the step shown in S104 in fig. 4. The processing unit 1002 may be configured to execute the step S203 shown in fig. 6. The processing unit 1002 is further configured to determine, according to the information of all layers, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the index numbers of the layers to which all modulation symbols are respectively mapped are used for the receiving unit 1001 to receive the first codeword.
The communication apparatus 1000 may further include a transmitting unit 1003, and the transmitting unit 1003 may be configured to execute the step illustrated in S204 in fig. 6.
For example, the receiving unit 1001 may be configured to receive first information, where the first information is used to indicate information of a first number of layers corresponding to a first codeword, where the first number is smaller than a number of all layers corresponding to the first codeword, where 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 information of a 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; alternatively, the processing unit 1003 may be configured to determine information of all layers; the receiving unit 1001 is configured to receive the first codeword according to the information of all the layers determined by the processing unit, where all modulation symbols corresponding to the first codeword are mapped to all the layers.
Exemplarily, the receiving unit 1001 is further configured to receive first configuration information; the processing unit 1001 is specifically configured to determine information of all layers according to the first configuration information received by the receiving unit, where the first configuration information is used to indicate the information of all layers; alternatively, the first and second electrodes may be,
the processing unit 1001 is specifically configured to determine information of all layers according to the first information, where the first information is further used to indicate the information of all layers; alternatively, the first and second electrodes may be,
the receiving unit 1001 is further configured to receive second configuration information, the processing unit is configured to determine information of all layers according to the first information and the second configuration information received by the receiving unit, the second configuration information is used to indicate information of a plurality of all layers, and the first information is further used to indicate information of one all layer in the information of the plurality of all layers; alternatively, the first and second electrodes may be,
the receiving unit 1001 is further configured to receive the second information, and the processing unit 1002 is configured to determine information of all layers according to the first information and the second information received by the receiving unit 1001, where 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 the information of the first number of layers and the information of the second number of layers.
Illustratively, the processing unit 1002 is specifically configured to: determining index numbers of layers to which all modulation symbols corresponding to the first code word are respectively mapped according to the information of all layers;
the receiving unit 1001 is specifically configured to receive the first codeword according to the index numbers of the layers to which all the modulation symbols determined by the processing unit are respectively mapped.
For example, the processing unit 1002 is specifically configured to determine, according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a first corresponding relationship, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the first corresponding relationship is a corresponding relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
For example, the processing unit 1002 is specifically configured to determine, according to the information of the first number of layers corresponding to the first codeword, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped;
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 determined by the processing unit are respectively mapped.
For example, the processing unit 1002 is specifically configured to determine, according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a second corresponding relationship, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the second corresponding relationship is a corresponding relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
Illustratively, the first information and the second information satisfy a first condition, the first condition including at least one of: the HARQ process identifier indicated by the first information is 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 information of a first number of layers corresponding to the first codeword indicated by the first information is different from the information of a 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 assignment indication information DAI included in the first information is the same as the DAI included in the second information; or the code word indication information included in the first information is the same as the code word indication information included in the second information; or, the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
For example, the receiving unit 1001 is further configured to receive 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 for indicating a first format, and 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 a first radio network identifier RNTI, and the RNTI scrambled with the first information and the RNTI scrambled with the second information are both the first RNTI; or the third configuration information is used to indicate a first control resource set, and both 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, 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.
Illustratively, the first number is p, and the information of the first number of layers includes layer B0Layer B1… and layer Bp-1In which B is0、B1… and Bp-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and 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 includes: when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a 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, and modulation symbols in the first modulation symbol set are mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 modulation symbols in the first modulation symbol set are mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The 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, and modulation symbols in the first modulation symbol set are mapped to layer B0The first modulationThe index number of the modulation symbols in the symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i +2, and the modulation symbol in the fourth modulation symbol set is mapped to layer B3The index number of the modulation symbol in the fourth modulation symbol set is p × i + 3; wherein i is 0 to
Figure BDA0001852857060000301
M is the number of all modulation symbols corresponding to the first codeword.
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 may be implemented by the receiver 902 of the communication device 900, the transmitting function of the transmitting unit 1003 may be implemented by the transmitter 901 of the communication device 900, the processing function of the receiving unit 1001, and the processing function of the processing unit 1002 may be implemented by the controller/processor 903. The functions of the storage unit 1004 may be implemented by the memory 803. The above implementations of the communication device 1000 are merely examples and should not be construed as limiting the implementations of the communication device 1000.
As shown in fig. 11, an embodiment of the present application provides a modular communication apparatus 1100. If the communication apparatus 1100 is a network device, the communication apparatus 1100 can be used to perform the functions of the network device 102 provided in the embodiments of the present application. The communication apparatus 1100 may include a transmitting unit 1101, a storage unit 1102. In addition, communication apparatus 1100 may further include a receiving unit 1003, configured to receive information, such as first notification information, HARQ information, and the like, sent by terminal device 101 in the embodiment of the present application. The communications apparatus 1100 can also include a processing unit 1004 for implementing processing functions of the network device 102.
Specifically, the sending unit 1101 may be configured to execute the steps shown as S101 and S103 in fig. 4 and/or S101 and S103a in fig. 4A, and/or the step shown as S201 in fig. 6. The transmitting unit 1101 may be further configured to transmit the second information, the first configuration information, the third configuration information, the fourth configuration information, the fifth configuration information, or the sixth configuration information referred to in the present application, or a combination of the above information to the terminal device 101. The receiving unit 1003 may be configured to perform a receiving step shown as S204 in fig. 6, and/or configured to receive HARQ information sent by the terminal apparatus 101 in this application. The processing unit 1004 may be configured to perform processes that are inherently related to the network device 102 and/or other processes for the techniques described herein that the network device 102 performs, such as determining index numbers for a first number of layers and/or determining index numbers for all layers.
Illustratively, the storage unit 1102 may be adapted to store program instructions;
the sending unit 1101 may be configured to send first information, where the first information is used to indicate information of a first number of layers corresponding to a first codeword, where 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;
the sending unit 1101 may be configured to send the first codeword, where 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 the first number of layers.
Illustratively, the sending unit 1101 is further configured to send second information, where the second information indicates information of a second number of layers corresponding to the first codeword.
Illustratively, the first information is further used for indicating information of the entire layers; alternatively, the first and second electrodes may be,
the sending unit 1101 is further configured to:
sending first configuration information, wherein the first configuration information is used for indicating the information of all the layers; or sending second configuration information, where the second configuration information is used to indicate information of multiple all layers, and the first information is also used to indicate information of one all layer in the information of multiple all layers; alternatively, the first and second electrodes may be,
and sending second information, wherein the information of all the layers comprises the information of the first number of layers and the information of the second number of layers.
For example, the sending unit 1101 is specifically configured to send information of all layers, where the information of all layers is used to indicate index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped; and the index number of the layer is used for sending the first code word according to the mapping of all the modulation symbols corresponding to the first code word.
Illustratively, the processing unit 1104 is specifically configured to:
and determining the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and a first corresponding relationship, wherein the first corresponding relationship is the corresponding relationship between each modulation symbol set in all modulation symbols and the index numbers of the layers included in the information of all layers.
For example, the processing unit 1104 is specifically configured to determine, according to the information of the first number of layers corresponding to the first codeword, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped, and the sending unit is specifically configured to send the first codeword according to the index numbers of the layers to which the modulation symbols are respectively mapped, which are determined by the processing unit.
For example, the processing unit 1104 is specifically configured to determine, according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a second corresponding relationship, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the second corresponding relationship is a corresponding relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
Illustratively, the first information and the second information satisfy a first condition, the first condition including at least one of: the HARQ process identifier indicated by the first information is 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 information of a first number of layers corresponding to the first codeword indicated by the first information is different from the information of a 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 assignment indication information DAI included in the first information is the same as the DAI included in the second information; or the code word indication information included in the first information is the same as the code word indication information included in the second information; or, the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
For example, 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 at least one of the following conditions: the third configuration information is used for indicating a first format, and 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 for indicating a first RNTI, and the RNTI scrambled the first information and the RNTI scrambled the second information are both the first RNTI; or the third configuration information is used to indicate a first control resource set, and both 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.
Illustratively, the first number is p, and the information of the first number of layers includes layer B0Layer B1… and layer Bp-1In which B is0、B1… and Bp-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and the modulation symbols in all modulation symbolsThe correspondence between each modulation symbol set and the index numbers of the layers included in the information of all the layers includes: when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a Alternatively, the first and second electrodes may be,
when p is 2, all modulation symbols corresponding to the first codeword comprise a first modulation symbol set and a second modulation symbol set, and modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 modulation symbols in the first modulation symbol set are mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The 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, and modulation symbols in the first modulation symbol set are mapped to layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i +2, and the modulation symbol in the fourth modulation symbol set is mapped to layer B3The index number of the modulation symbol in the fourth modulation symbol set is p × i + 3; wherein i is 0 to
Figure BDA0001852857060000321
M is the number of all modulation symbols corresponding to the first codeword.
It is to be appreciated that the communication device 1100 as shown in fig. 11 can be implemented by the communication device 800 shown in fig. 8. For example, the receiving function of the receiving unit 1103 and the transmitting function of the transmitting unit 1101 may be implemented by the transmitter/receiver 801 in the communication apparatus 800, and the processing function of the processing unit 1104 may be implemented by the controller/processor 802. The function of the storage unit 1103 can be implemented by the memory 803. The above implementations of the communication device 1100 are merely illustrative and should not be construed as limiting the implementations of the communication device 1000.
It should be understood that the processor (e.g., the processor 801) mentioned in the embodiments of the present application may be a Central Processing Unit (CPU), and may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory referred to in this application as memory 802 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-Only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).
The memory, storage units described herein include, but are not limited to, these and any other suitable types of memory.
Based on the same concept as the method embodiment, the embodiment of the present application further provides a computer-readable storage medium, on which some instructions are stored, and when the instructions are called to execute, the instructions may cause the first device or the second device to execute the functions involved in any one of the possible designs of the method embodiment and the method embodiment. In the embodiment of the present application, the readable storage medium is not limited, and may be, for example, a RAM (random-access memory), a ROM (read-only memory), and the like.
Based on the same concept as the method embodiments, the present application further provides a computer program product, which when executed by a computer, can enable the first device or the second device to perform the functions involved in any one of the possible designs of the method embodiments and the method embodiments.
Based on the same concept as the method embodiment, the embodiment of the present application further provides a chip, which can be coupled to a transceiver, and is used for a first device or a second device to implement the functions involved in any one of the possible designs of the method embodiment and the method embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Claims (38)

1. A method of communication, comprising:
the method comprises the steps that terminal equipment receives first information, wherein the first information is used for indicating information of a first number of layers corresponding to a first code word, the first number is smaller than the number of all layers corresponding to the first code word, the first number is a positive integer larger than or equal to 1, and the number of all layers is a positive integer larger than or equal to 2;
the terminal equipment determines the information of all the layers, receives the first code word according to the information of all the layers, and maps all modulation symbols corresponding to the first code word to all the layers; alternatively, the first and second electrodes may be,
and the terminal equipment receives the first code word according to the information of the first number of layers corresponding to the first code word, wherein all modulation symbols corresponding to the first code word are mapped to the first number of layers.
2. The method of claim 1, wherein the terminal device determining the information of all layers comprises:
the terminal equipment receives first configuration information, and determines the information of all layers according to the first configuration information, wherein the first configuration information is used for indicating the information of all layers; alternatively, the first and second electrodes may be,
the terminal equipment determines the information of all layers according to the first information, wherein the first information is also used for indicating the information of all layers; alternatively, the first and second electrodes may be,
the terminal equipment receives second configuration information, and determines the information of all layers according to the first configuration information and the second configuration information, wherein the second configuration information is used for indicating the information of a plurality of all layers, and the first configuration information is also used for indicating the information of one all layer in the information of the plurality of all layers; alternatively, the first and second electrodes may be,
and the terminal equipment receives second information, and determines the information of all layers according to the first information and the second information, wherein the second information is used for indicating the information of a second number of layers corresponding to the first code word, and the information of all layers comprises the information of the first number of layers and the information of the second number of layers.
3. The method of 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 all layers, including:
the terminal equipment determines index numbers of layers respectively mapped by all modulation symbols corresponding to the first code word according to the information of all layers;
and the terminal equipment receives the first code word according to the index numbers of the layers respectively mapped by all the modulation symbols.
4. The method of claim 3, wherein the determining, by the terminal device, the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the information of all layers comprises:
and the terminal equipment determines the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and a first corresponding relationship, wherein the first corresponding relationship is the corresponding relationship between each modulation symbol set in all modulation symbols and the index numbers of the layers contained in the information of all layers.
5. The method of 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 first number of layers, including:
the terminal equipment determines index numbers of layers to which modulation symbols corresponding to the first code words are respectively mapped according to the information of the first number of layers corresponding to the first code words;
and the terminal equipment receives the first code word according to the index numbers of the layers respectively mapped by all the modulation symbols.
6. The method of claim 5, wherein the determining, by the terminal device, the index numbers of the layers 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, comprises:
and the terminal equipment determines the index numbers of the layers to which all modulation symbols corresponding to the first code word are respectively mapped according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and a second corresponding relation, wherein the second corresponding relation is the corresponding relation between each modulation symbol set in all modulation symbols and the index numbers of the layers contained in the information of all layers.
7. The method of claim 2, wherein the first information and the second information satisfy a first condition, the first condition comprising at least one of:
the HARQ process identifier indicated by the first information is the same as the HARQ process identifier indicated by the second information; alternatively, the first and second electrodes may be,
the antenna port indicated by the first information is different from the antenna port indicated by the second information; alternatively, the first and second electrodes may be,
information of a first number of layers corresponding to the first codeword indicated by the first information is different from information of a second number of layers corresponding to the first codeword indicated by the second information; alternatively, the first and second electrodes may be,
the first information comprises new data indication information NDI which is the same as the NDI comprised by the second information; alternatively, the first and second electrodes may be,
the downlink assignment indication information DAI included in the first information is the same as the DAI included in the second information; alternatively, the first and second electrodes may be,
the first information comprises the same code word indication information as the second information; alternatively, the first and second electrodes may be,
the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
8. The method of 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, where the second condition includes at least one of the following conditions:
the third configuration information is used for indicating a first format, and the format of the first information and the format of the second information are both the first format; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first radio network identifier (RNTI), and both the RNTI used for scrambling the first information and the RNTI used for scrambling the second information are the first RNTI; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first control resource set, and the resource where the first information is located and the resource where the second information is located both belong to the first control resource set; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating 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.
9. The method of any of claims 1-8, wherein the first number is p, and the information for the first number of layers comprises layer B0Layer B1… and layer Bp-1In which B is0、B1… and Bp-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and 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 includes:
when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a Or，
When p is 2, all modulation symbols corresponding to the first codeword comprise a first modulation symbol set and a second modulation symbol set, and modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The index number of the modulation symbol in the second modulation symbol set is p × i + 1; alternatively, the first and second electrodes may be,
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 modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i + 2; alternatively, the first and second electrodes may be,
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, and modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i +2, and the modulation symbol in the fourth modulation symbol set is mapped to layer B3The index number of the modulation symbol in the fourth modulation symbol set is p × i + 3;
wherein i is 0 to
Figure FDA0001852857050000031
M is the number of all modulation symbols corresponding to the first codeword.
10. A method of communication, comprising:
the network equipment sends first information, wherein the first information is used for indicating information of a first number of layers corresponding to a first code word, the first number is smaller than the number of all layers corresponding to the first code word, the first number is a positive integer larger than or equal to 1, and the number of all layers is a positive integer larger than or equal to 2;
the network device sends the first codeword, where 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 the first number of layers.
11. The method of claim 10, further comprising:
and the network equipment sends second information, wherein the second information indicates information of a second number of layers corresponding to the first code word.
12. The method of claim 10, further comprising:
the network equipment sends first configuration information, wherein the first configuration information is used for indicating the information of all the layers; alternatively, the first and second electrodes may be,
the first information is also used for indicating the information of all layers; alternatively, the first and second electrodes may be,
the network equipment sends second configuration information, wherein the second configuration information is used for indicating information of a plurality of all layers, and the first information is also used for indicating information of one all layer in the information of the plurality of all layers; alternatively, the first and second electrodes may be,
the network device sends second information, where the second information indicates 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.
13. The method of any one of claims 10-12, wherein the network device sends the first codeword with all modulation symbols for the first codeword mapped to the all layers, comprising:
the network device sends the information of all layers, wherein the information of all layers is used for indicating the index numbers of the layers to which all modulation symbols corresponding to the first code word are respectively mapped;
and the network equipment sends the first code word according to the index numbers of the layers to which all modulation symbols corresponding to the first code word are respectively mapped.
14. The method of claim 13, wherein the network device determines the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the following method:
and the network device determines, according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a first corresponding relationship, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the first corresponding relationship is a corresponding relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
15. The method of any one of claims 10-12, wherein the network device transmitting the first codeword with all modulation symbols for the first codeword mapped to the first number of layers, comprises:
the network device determines, according to the information of the first number of layers corresponding to the first codeword, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped;
and the network equipment sends the first code word according to the index numbers of the layers respectively mapped by all the modulation symbols.
16. The method of claim 15, wherein the network device determines, according to the information of the first number of layers corresponding to the first codeword, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped, including:
and the network device determines, according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a second correspondence, index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped, where the second correspondence is a correspondence between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
17. The method of claim 11 or 12, wherein the first information and the second information satisfy a first condition, the first condition comprising at least one of:
the HARQ process identifier indicated by the first information is the same as the HARQ process identifier indicated by the second information; alternatively, the first and second electrodes may be,
the antenna port indicated by the first information is different from the antenna port indicated by the second information; alternatively, the first and second electrodes may be,
information of a first number of layers corresponding to the first codeword indicated by the first information is different from information of a second number of layers corresponding to the first codeword indicated by the second information; alternatively, the first and second electrodes may be,
the first information comprises new data indication information NDI which is the same as the NDI comprised by the second information; alternatively, the first and second electrodes may be,
the downlink assignment indication information DAI included in the first information is the same as the DAI included in the second information; alternatively, the first and second electrodes may be,
the first information comprises the same code word indication information as the second information; alternatively, the first and second electrodes may be,
the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
18. The method of any one of claims 11, 12, 17, further comprising:
the network device sends third configuration information, where the third configuration information, the first information, and the second information satisfy a second condition, where the second condition includes at least one of the following conditions:
the third configuration information is used for indicating a first format, and the format of the first information and the format of the second information are both the first format; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first RNTI, and both the RNTI for scrambling the first information and the RNTI for scrambling the second information are the first RNTI; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first control resource set, and the resource where the first information is located and the resource where the second information is located both belong to the first control information set; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating 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.
19. The method of any of claims 10-18, wherein the first number is p, and the information for the first number of layers comprises layer B0Layer B1… and layer Bp-1In which B is0、B1… and Bp-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and 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 includes:
when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a Alternatively, the first and second electrodes may be,
when p is 2, all modulation symbols corresponding to the first codeword comprise a first modulation symbol set and a second modulation symbol set, and modulation symbols in the first modulation symbol set are mapped to a layer B0Modulation symbols in the first set of modulation symbolsIndex of the symbols is p x i, and the modulation symbols in the second set of modulation symbols are mapped to layer B1The index number of the modulation symbol in the second modulation symbol set is p × i + 1; alternatively, the first and second electrodes may be,
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 modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i + 2; alternatively, the first and second electrodes may be,
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, and modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i +2, and the modulation symbol in the fourth modulation symbol set is mapped to layer B3The index number of the modulation symbol in the fourth modulation symbol set is p × i + 3;
wherein i is 0 to
Figure FDA0001852857050000051
M is the number of all modulation symbols corresponding to the first codeword.
20. A communication device is characterized by comprising a storage unit, a receiving unit and a processing unit:
the storage unit is used for storing program instructions;
the receiving unit is configured to receive first information, where the first information is used to indicate information of a first number of layers corresponding to a first codeword, where 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;
the receiving unit is configured to receive the first codeword according to information of a 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; alternatively, the first and second electrodes may be,
the processing unit is used for determining the information of all the layers;
the receiving unit is configured to receive the first codeword according to the information of all the layers determined by the processing unit, where all modulation symbols corresponding to the first codeword are mapped to all the layers.
21. The apparatus of claim 20,
the receiving unit is further configured to receive first configuration information; the processing unit is specifically configured to determine information of all the layers according to the first configuration information received by the receiving unit, where the first configuration information is used to indicate the information of all the layers; alternatively, the first and second electrodes may be,
the processing unit is specifically configured to determine information of all layers according to the first information, where the first information is further used to indicate the information of all layers; alternatively, the first and second electrodes may be,
the receiving unit is further configured to receive second configuration information, the processing unit is configured to determine information of all layers according to the first information and the second configuration information received by the receiving unit, the second configuration information is used to indicate information of a plurality of all layers, and the first information is further used to indicate information of one all layer in the information of the plurality of all layers; alternatively, the first and second electrodes may be,
the receiving unit is further configured to receive the second information, and the processing unit is configured to determine information of all layers according to the first information and the second information received by the receiving unit, where 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 the information of the first number of layers and the information of the second number of layers.
22. The apparatus of claim 20 or 21,
the processing unit is specifically configured to: determining index numbers of layers to which all modulation symbols corresponding to the first code word are respectively mapped according to the information of all layers;
the receiving unit is specifically configured to receive the first codeword according to the index numbers of the layers to which all the modulation symbols determined by the processing unit are respectively mapped.
23. The apparatus of claim 22, wherein the processing unit is specifically configured to determine index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a first correspondence relationship, where the first correspondence relationship is a correspondence relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
24. 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, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped;
the receiving unit 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 determined by the processing unit are respectively mapped.
25. The apparatus of claim 24, wherein the processing unit is specifically configured to determine index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a second correspondence relationship, where the second correspondence relationship is a correspondence relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
26. The apparatus of claim 21, wherein the first information and the second information satisfy a first condition, the first condition comprising at least one of:
the HARQ process identifier indicated by the first information is the same as the HARQ process identifier indicated by the second information; alternatively, the first and second electrodes may be,
the antenna port indicated by the first information is different from the antenna port indicated by the second information; alternatively, the first and second electrodes may be,
information of a first number of layers corresponding to the first codeword indicated by the first information is different from information of a second number of layers corresponding to the first codeword indicated by the second information; alternatively, the first and second electrodes may be,
the first information comprises new data indication information NDI which is the same as the NDI comprised by the second information; alternatively, the first and second electrodes may be,
the downlink assignment indication information DAI included in the first information is the same as the DAI included in the second information; alternatively, the first and second electrodes may be,
the first information comprises the same code word indication information as the second information; alternatively, the first and second electrodes may be,
the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
27. The apparatus of claim 21 or 26, wherein the receiving unit is further configured to receive third configuration information, wherein the third configuration information, the first information, and the second information satisfy a second condition, and wherein the second condition comprises at least one of:
the third configuration information is used for indicating a first format, and the format of the first information and the format of the second information are both the first format; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first radio network identifier (RNTI), and both the RNTI used for scrambling the first information and the RNTI used for scrambling the second information are the first RNTI; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first control resource set, and the resource where the first information is located and the resource where the second information is located both belong to the first control resource set; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating 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.
28. The apparatus of any of claims 20-27, wherein the first number is p, and the information for the first number of layers comprises layer B0Layer B1… and layer Bp-1In which B is0、B1… and Bp-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and 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 includes:
when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a Alternatively, the first and second electrodes may be,
when p is 2, all modulation symbols corresponding to the first codeword comprise a first modulation symbol set and a second modulation symbol set, and modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The index number of the modulation symbol in the second modulation symbol set is p × i + 1; alternatively, the first and second electrodes may be,
when p is 3, the first code wordThe corresponding total modulation symbols comprise 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 a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i + 2; alternatively, the first and second electrodes may be,
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, and modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i +2, and the modulation symbol in the fourth modulation symbol set is mapped to layer B3The index number of the modulation symbol in the fourth modulation symbol set is p × i + 3;
wherein i is 0 to
Figure FDA0001852857050000081
M is the number of all modulation symbols corresponding to the first codeword.
29. A communication apparatus, comprising a storage unit and a transmission unit:
the storage unit is used for storing program instructions;
the sending unit is configured to send first information, where the first information is used to indicate information of a first number of layers corresponding to a 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;
the sending unit is configured to send the first codeword, where 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 the first number of layers.
30. The apparatus of claim 29,
the sending unit is further configured to send second information, where the second information indicates information of a second number of layers corresponding to the first codeword.
31. The apparatus of claim 29,
the first information is also used for indicating the information of all layers; alternatively, the first and second electrodes may be,
the sending unit is further configured to:
sending first configuration information, wherein the first configuration information is used for indicating the information of all the layers; or sending second configuration information, where the second configuration information is used to indicate information of multiple all layers, and the first information is also used to indicate information of one all layer in the information of multiple all layers; alternatively, the first and second electrodes may be,
and sending second information, wherein the information of all the layers comprises the information of the first number of layers and the information of the second number of layers.
32. The apparatus according to any of claims 29-31, wherein the transmitting unit is specifically configured to transmit information of all layers, where the information of all layers is used to indicate index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped; and the index number of the layer is used for sending the first code word according to the mapping of all the modulation symbols corresponding to the first code word.
33. The apparatus of claim 32, further comprising a processing unit, the processing unit to:
and determining the index numbers of the layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to the modulation symbol set to which the modulation symbols in all modulation symbols belong and a first corresponding relationship, wherein the first corresponding relationship is the corresponding relationship between each modulation symbol set in all modulation symbols and the index numbers of the layers included in the information of all layers.
34. The apparatus according to any one of claims 29 to 31, further comprising a processing unit, wherein the processing unit is specifically configured to determine, according to the information of the first number of layers corresponding to the first codeword, index numbers of layers to which modulation symbols corresponding to the first codeword are respectively mapped, and the sending unit is specifically configured to send the first codeword according to the index numbers of layers to which the modulation symbols are respectively mapped, which are determined by the processing unit.
35. The apparatus of claim 34, wherein the processing unit is specifically configured to determine index numbers of layers to which all modulation symbols corresponding to the first codeword are respectively mapped according to a modulation symbol set to which modulation symbols in all modulation symbols belong and a second correspondence relationship, where the second correspondence relationship is a correspondence relationship between each modulation symbol set in all modulation symbols and index numbers of layers included in information of all layers.
36. The apparatus of claim 30 or 31, wherein the first information and the second information satisfy a first condition, the first condition comprising at least one of:
the HARQ process identifier indicated by the first information is the same as the HARQ process identifier indicated by the second information; alternatively, the first and second electrodes may be,
the antenna port indicated by the first information is different from the antenna port indicated by the second information; alternatively, the first and second electrodes may be,
information of a first number of layers corresponding to the first codeword indicated by the first information is different from information of a second number of layers corresponding to the first codeword indicated by the second information; alternatively, the first and second electrodes may be,
the first information comprises new data indication information NDI which is the same as the NDI comprised by the second information; alternatively, the first and second electrodes may be,
the downlink assignment indication information DAI included in the first information is the same as the DAI included in the second information; alternatively, the first and second electrodes may be,
the first information comprises the same code word indication information as the second information; alternatively, the first and second electrodes may be,
the time-frequency domain resources indicated by the first information partially overlap or completely overlap with the time-frequency domain resources indicated by the second information.
37. The apparatus of any one of claims 30, 31, 36, wherein the transmitting unit is further configured to transmit third configuration information, the first information, and the second information satisfying a second condition, the second condition comprising at least one of:
the third configuration information is used for indicating a first format, and the format of the first information and the format of the second information are both the first format; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first RNTI, and both the RNTI for scrambling the first information and the RNTI for scrambling the second information are the first RNTI; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating a first control resource set, and the resource where the first information is located and the resource where the second information is located both belong to the first control information set; alternatively, the first and second electrodes may be,
the third configuration information is used for indicating 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.
38. The apparatus of any one of claims 29-37, wherein the first number is p, and the information for the first number of layers comprises layer B0Layer B1… and layer Bp-1In which B is0、B1… and Bp-1For the index number of a layer, the number of modulation symbol sets included in all modulation symbols corresponding to the first codeword is p, and 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 includes:
when p is 1, all modulation symbols corresponding to the first codeword are mapped to layer B0(ii) a Alternatively, the first and second electrodes may be,
when p is 2, all modulation symbols corresponding to the first codeword comprise a first modulation symbol set and a second modulation symbol set, and modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The index number of the modulation symbol in the second modulation symbol set is p × i + 1; alternatively, the first and second electrodes may be,
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 modulation symbols in the first modulation symbol set are mapped to a layer B0The index number of the modulation symbols in the first modulation symbol set is p x i, and the modulation symbols in the second modulation symbol set are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i + 2; alternatively, the first and second electrodes may be,
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, and modulation symbols in the first modulation symbol set are mapped to a layer B0Modulation symbols of the first set of modulation symbolsIs denoted by p x i, the modulation symbols in said second set of modulation symbols are mapped to layer B1The 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 B2The index number of the modulation symbol in the third modulation symbol set is p × i +2, and the modulation symbol in the fourth modulation symbol set is mapped to layer B3The index number of the modulation symbol in the fourth modulation symbol set is p × i + 3;
wherein i is 0 to
Figure FDA0001852857050000101
M is the number of all modulation symbols corresponding to the first codeword.
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