CN116367168A

CN116367168A - Communication method and device

Info

Publication number: CN116367168A
Application number: CN202111587123.6A
Authority: CN
Inventors: 王�锋; 张旭
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2023-06-30
Also published as: WO2023116803A1

Abstract

The embodiment of the application discloses a communication method and device. The method comprises the following steps: the method comprises the steps that terminal equipment obtains first configuration information, wherein the first configuration information is used for indicating that coherence on at least one carrier is allowed to be indicated through downlink control information DCI or a media access control unit (MAC CE); the terminal device receives the DCI or the MAC CE from the network device, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs. The high coherence between the multiple transmission channels is fully utilized, so that the terminal equipment can transmit the high coherence between different frequency bands as much as possible, and the throughput of uplink transmission is improved.

Description

Communication method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communications method and apparatus.

Background

The hardware rf design of different UEs (user equipment) may generate situations where multiple uplink antennas satisfy coherent transmission or do not satisfy coherent transmission. Such as the distance between the antennas of the UE, radio frequency channel amplifiers, phase control capabilities, etc. In the uplink transmission direction, a New Radio (NR) supports two transmission modes: codebook-based uplink physical shared channel (physical uplink shared channel, PUSCH) transmission and non-codebook-based PUSCH transmission. For codebook-based PUSCH transmissions, the base station needs to limit codebook usage according to the coherence capability of the UE. However, since the coherence capability of the frequency band reported by the UE is fixed, the uplink transmission cannot be performed by fully utilizing the high coherence codebook, and the throughput of the uplink transmission is affected.

Disclosure of Invention

The embodiment of the application provides a communication method and device, which can improve the throughput of uplink transmission.

In a first aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that terminal equipment obtains first configuration information, wherein the first configuration information is used for indicating that coherence on at least one carrier is allowed to be indicated through downlink control information DCI or a media access control unit (MAC CE); receiving the DCI or the MAC CE from a network device, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs. The coherence of at least one carrier is indicated by DCI or MAC CE, the coherence of at least one carrier is switched in a dynamic or semi-static mode, the high coherence among multiple transmission channels is fully utilized, the terminal equipment can transmit the high coherence among different frequency bands as much as possible, and the throughput of uplink transmission is improved.

In one possible design, the terminal device sends, to the network device, a plurality of sets of parameters corresponding to a first frequency band combination, where each set of parameters in the plurality of sets of parameters includes coherence capability of each frequency band in the first frequency band combination supported by the terminal device, and coherence capability on at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different. By indicating that the coherence capability of at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different, the network device can acquire that the coherence capability of the terminal device on at least one frequency band in the first frequency band combination can be changed, so that the coherence on at least one frequency band of the first frequency band combination is switched in a dynamic or semi-static mode.

In another possible design, the highest coherence capability of at least two frequency bands in the first frequency band combination is located in two different sets of parameters of the plurality of sets of parameters. In this way, the network device can learn that the highest coherence capability of the terminal device on at least two frequency bands is respectively located in two groups of parameters, the coherence capability on at least two frequency bands can be changed, and the network device can switch the coherence on at least two frequency bands of the first frequency band combination in a dynamic or semi-static mode.

In another possible design, the terminal device sends at least one set of parameters corresponding to a first frequency band combination to the network device, where the at least one set of parameters includes coherence capabilities of at least two frequency bands in the first frequency band combination supported by the terminal device, and coherence on the at least two frequency bands cannot be the coherence capabilities indicated by the at least one set of parameters at the same time. By indicating that the coherence on at least two frequency bands cannot be the coherence capability indicated by the at least one set of parameters at the same time, the network device may learn that the coherence capability of the terminal device on at least one frequency band in the first frequency band combination may change, thereby switching the coherence on at least one frequency band of the first frequency band combination in a dynamic or semi-static manner. In addition, the number of the parameters reported by the UE can be reduced by reporting the parameters in the mode.

In another possible design, the terminal device sends second indication information to the network device, where the second indication information is used to indicate that the terminal device supports switching of the coherence of the frequency band to which the at least one carrier belongs. By directly informing the base station whether the UE supports the dynamic switching coherence, the base station can more clearly acquire the coherence capability of the UE, and the process of the base station for judging whether the UE supports the dynamic switching coherence is reduced, so that the judging process is simpler.

In another possible design, the terminal device receives second configuration information from the network device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong. By configuring the highest coherence of the carrier, the coherence of the carrier is flexibly changed by DCI or MAC CE without exceeding the coherence of the carrier configured by the base station.

In another possible design, the first indication information carries a column in the most significant bit or time domain resource allocation cell in the DCI. And the data transmission quantity is reduced and the data transmission efficiency is improved by indicating the first indication information by the highest bit in the indication domain in the DCI or a row of indication information in the time domain resource allocation information element.

In another possible design, the first indication information indicates a value range of a value indicated by the TPMI field indicated by the transmit precoding matrix in the DCI, or indicates a value range of a value indicated by the precoding information and the layer number field. The first indication information is indicated by the value range of the numerical value indicated by the TPMI domain or the value range of the numerical value indicated by the precoding information and the layer number domain, so that the data transmission quantity is reduced, and the data transmission efficiency is improved.

In another possible design, when the current coherence of the at least one carrier is less than the coherence of the at least one carrier indicated by the first indication information, the terminal device sends uplink data to the network device on the at least one carrier after at least a first duration, where the first duration is a duration of switching a carrier, a duration of switching a coherence, a greater value of a duration of switching a carrier and a duration of switching a coherence, or a predefined duration. And ensuring that the coherence switching of at least one carrier wave is successful by carrying out uplink transmission after at least the first duration.

In a second aspect, an embodiment of the present application provides a communication method, including: the network equipment sends first configuration information to the terminal equipment, wherein the first configuration information is used for indicating the coherence of at least one carrier wave through downlink control information DCI or a media access control unit (MAC CE); and sending the DCI or the MAC CE to the terminal equipment, wherein the DCI or the MAC CE comprises first indication information, the first indication information is used for indicating the coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed the coherence capability supported by the frequency band to which the at least one carrier belongs. The coherence of at least one carrier is indicated by DCI or MAC CE, the coherence of at least one carrier is switched in a dynamic or semi-static mode, the high coherence among multiple transmission channels is fully utilized, the terminal equipment can transmit the high coherence among different frequency bands as much as possible, and the throughput of uplink transmission is improved.

In one possible design, the network device receives a plurality of sets of parameters corresponding to a first frequency band combination from the terminal device, where each set of parameters includes coherence capability of each frequency band in the first frequency band combination supported by the terminal device, and coherence capability on at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different. By indicating that the coherence capability of at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different, the network device can acquire that the coherence capability of the terminal device on at least one frequency band in the first frequency band combination can be changed, so that the coherence on at least one frequency band of the first frequency band combination is switched in a dynamic or semi-static mode.

In another possible design, the network device receives at least one set of parameters corresponding to a first frequency band combination from the terminal device, where the at least one set of parameters includes coherence capabilities of at least two frequency bands in the first frequency band combination supported by the terminal device, and coherence on the at least two frequency bands cannot be the coherence capabilities indicated by the at least one set of parameters at the same time. By indicating that the coherence on at least two frequency bands cannot be the coherence capability indicated by the at least one set of parameters at the same time, the network device may learn that the coherence capability of the terminal device on at least one frequency band in the first frequency band combination may change, thereby switching the coherence on at least one frequency band of the first frequency band combination in a dynamic or semi-static manner. In addition, the number of the parameters reported by the UE can be reduced by reporting the parameters in the mode.

In another possible design, the network device receives second indication information from the terminal device, where the second indication information is used to indicate that the terminal device supports switching of a coherence of a frequency band to which the at least one carrier belongs. By directly informing the base station whether the UE supports the dynamic switching coherence, the base station can more clearly acquire the coherence capability of the UE, and the process of the base station for judging whether the UE supports the dynamic switching coherence is reduced, so that the judging process is simpler.

In another possible design, the network device sends second configuration information to the terminal device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong. By configuring the highest coherence of the carrier, the coherence of the carrier is flexibly changed by DCI or MAC CE without exceeding the coherence of the carrier configured by the base station.

In another possible design, when the current coherence of the at least one carrier is less than the coherence of the at least one carrier indicated by the first indication information, the network device receives uplink data sent by the terminal device on the at least one carrier after at least a first time period, where the first time period is a duration of switching a carrier, a duration of switching a coherence, a greater value of a duration of switching a carrier and a duration of switching a coherence, or a predefined duration. And ensuring that at least one carrier wave completes the switching of the coherence by carrying out uplink transmission after at least a first duration.

In a third aspect, an embodiment of the present application provides a communication apparatus, including:

a receiving module, configured to obtain first configuration information, where the first configuration information is used to indicate that coherence on at least one carrier is allowed to be indicated through downlink control information DCI or a medium access control unit MAC CE;

the receiving module is further configured to receive the DCI or the MAC CE from a network device, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs.

In another possible design, the apparatus further comprises:

the network equipment comprises a sending module, a network equipment and a network equipment, wherein the sending module is used for sending a plurality of groups of parameters corresponding to a first frequency band combination to the network equipment, each group of parameters in the plurality of groups of parameters comprises coherence capability of each frequency band in the first frequency band combination supported by the terminal equipment, and the coherence capability of at least one frequency band in at least two groups of parameters corresponding to the first frequency band combination is different.

In another possible design, the highest coherence capability of at least two frequency bands in the first frequency band combination is located in two different sets of parameters of the plurality of sets of parameters.

In another possible design, the apparatus further comprises:

and the sending module is used for sending at least one group of parameters corresponding to the first frequency band combination to the network equipment, wherein the at least one group of parameters comprise coherence capability of at least two frequency bands in the first frequency band combination supported by the terminal equipment, and coherence on the at least two frequency bands cannot be the coherence capability indicated by the at least one group of parameters at the same time.

In another possible design, the sending module is further configured to send second indication information to the network device, where the second indication information is used to indicate that the terminal device supports switching between the frequency bands to which the at least one carrier belongs.

In another possible design, the receiving module is further configured to receive second configuration information from the network device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

In another possible design, the first indication information carries a column in the most significant bit or time domain resource allocation cell in the DCI.

In another possible design, the first indication information indicates a value range of a value indicated by the TPMI field indicated by the transmit precoding matrix in the DCI, or indicates a value range of a value indicated by the precoding information and the layer number field.

In another possible design, the sending module is configured to send, when the current coherence of the at least one carrier is less than the coherence of the at least one carrier indicated by the first indication information, uplink data to the network device on the at least one carrier after at least a first duration is elapsed, where the first duration is a duration of switching a carrier, a duration of switching a coherence, a greater value of a duration of switching a carrier and a duration of switching a coherence, or a predefined duration.

The operations and advantages performed by the communication device may be referred to the methods and advantages described in the first aspect, and the repetition is not repeated.

In a fourth aspect, embodiments of the present application provide a communication apparatus, the apparatus including:

a sending module, configured to send first configuration information to a terminal device, where the first configuration information is used to indicate that coherence on at least one carrier is allowed to be indicated through downlink control information DCI or a medium access control unit MAC CE;

the sending module is further configured to send the DCI or the MAC CE to the terminal device, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs.

In another possible design, the apparatus further comprises:

the receiving module is configured to receive a plurality of sets of parameters corresponding to a first frequency band combination from the terminal device, where each set of parameters includes coherence capability of each frequency band in the first frequency band combination supported by the terminal device, and coherence capability on at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different.

In another possible design, the apparatus further comprises:

the receiving module is configured to receive at least one set of parameters corresponding to a first frequency band combination from the terminal device, where the at least one set of parameters includes coherence capability of at least two frequency bands in the first frequency band combination supported by the terminal device, and coherence on the at least two frequency bands cannot be the coherence capability indicated by the at least one set of parameters at the same time.

In another possible design, the receiving module is further configured to receive second indication information from the terminal device, where the second indication information is used to indicate that the terminal device supports switching between the frequency bands to which the at least one carrier belongs.

In another possible design, the sending module is further configured to send second configuration information to the terminal device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

In another possible design, the apparatus further comprises:

and a receiving module, configured to receive uplink data sent by the terminal device on the at least one carrier after at least a first time period is passed when the current coherence of the at least one carrier is less than the coherence of the at least one carrier indicated by the first indication information, where the first time period is a duration of switching the carrier, a duration of switching the coherence, a greater value of the duration of switching the carrier and the duration of switching the coherence, or a predefined duration.

The operations and advantages performed by the communication device may be referred to the methods and advantages described in the second aspect, and the repetition is omitted.

In a fifth aspect, embodiments of the present application provide a communication apparatus configured to implement the method and the function performed by the terminal device in the first aspect, where the method and the function are implemented by hardware/software, and the hardware/software includes a module corresponding to the function.

In a sixth aspect, embodiments of the present application provide a communications apparatus configured to implement the method and the function performed by the network device in the second aspect, where the method and the function are implemented by hardware/software, and the hardware/software includes a module corresponding to the function.

In a seventh aspect, the present application provides a communication apparatus, which may be a terminal device, or an apparatus in a terminal device, or an apparatus that can be used in a matching manner with a terminal device. The communication device may also be a chip system. The communication device may perform the method of the first aspect. The functions of the communication device can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above. The module may be software and/or hardware. The operations and advantages performed by the communication device may be referred to the methods and advantages described in the first aspect, and the repetition is not repeated.

In an eighth aspect, the present application provides a communications apparatus, which may be a network device, an apparatus in a network device, or an apparatus that can be used in cooperation with a network device. The communication device may also be a chip system. The communication device may perform the method of the second aspect. The functions of the communication device can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above. The module may be software and/or hardware. The operations and advantages performed by the communication device may be referred to the methods and advantages described in the second aspect, and the repetition is omitted.

In a ninth aspect, the present application provides a communications apparatus comprising a processor, the method of any one of the first and second aspects being performed when the processor invokes a computer program in memory.

In a tenth aspect, the present application provides a communication device comprising a processor and a memory for storing computer-executable instructions; the processor is configured to execute computer-executable instructions stored in the memory to cause the communication device to perform the method according to any one of the first and second aspects.

In an eleventh aspect, the present application provides a communication device comprising a processor, a memory, and a transceiver for receiving a channel or signal, or transmitting a channel or signal; the memory is used for storing program codes; the processor is configured to invoke the program code from the memory to perform the method according to any of the first and second aspects.

In a twelfth aspect, the present application provides a communication device comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor; the processor executes the code instructions to perform the method of any one of the first and second aspects.

In a thirteenth aspect, the present application provides a computer readable storage medium for storing a computer program which, when executed, causes the method according to any one of the first and second aspects to be implemented.

In a fourteenth aspect, the present application provides a computer program product comprising a computer program which, when executed, causes the method according to any one of the first and second aspects to be carried out.

In a fifteenth aspect, embodiments of the present application provide a communication system, which includes at least one terminal device for performing the steps in the first aspect and at least one network device for performing the steps in the second aspect.

Drawings

In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a communication method according to an embodiment of the present application;

Fig. 3 is a schematic diagram of parameters corresponding to a frequency band combination according to an embodiment of the present application;

fig. 4 is a schematic diagram of parameters corresponding to another frequency band combination provided in the embodiment of the present application;

fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

As shown in fig. 1, fig. 1 is a schematic architecture diagram of a communication system 100 according to an embodiment of the present application. The communication system 100 may include a network device 110 and terminal devices 101-106. It should be understood that more or fewer network devices or terminal devices may be included in communication system 100 to which the methods of embodiments of the present application may be applied. The network device or terminal device may be hardware, or may be functionally divided software, or a combination of both. The network device and the terminal device may communicate with each other through other devices or network elements. In the communication system 100, the network device 110 may transmit downlink data to the terminal devices 101 to 106. Of course, the terminal devices 101 to 106 may transmit uplink data to the network device 110. Terminal devices 101-106 may be cellular telephones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, palmtop computers (personal digital assistant, PDAs), and/or any other suitable device for communicating over wireless communication system 100, etc. The network device 110 may be a network device that is long term evolution (long term evolution, LTE) and/or NR, in particular a base station (NodeB), an evolved base station (eNodeB), a base station in a 5G mobile communication system, a next generation mobile communication base station (Next generation Node B, gNB), a base station in a future mobile communication system or an access node in a Wi-Fi system. The following describes a terminal device as UE and a network device as a base station.

The communication system 100 may employ a public land mobile network (public land mobile network, PLMN), an internet of vehicles (vehicle to everything, V2X), a device-to-device (D2D) network, a machine-to-machine (machine to machine, M2M) network, an internet of things (internet of things, ioT), or other network. In addition, the terminal devices 104 to 106 may constitute a communication system. In the communication system, the terminal device 105 can transmit downlink data to the terminal device 104 or the terminal device 106. The method in the embodiment of the present application may be applied to the communication system 100 shown in fig. 1.

The terms referred to in this application are explained as follows:

carrier aggregation: the UE is configured with multiple cells, each cell includes one downlink carrier and 0-2 uplink carriers, and the UE can activate some cells in the multiple cells, but some UEs have limited uplink capabilities, and at most can only configure and activate two uplink carriers.

In the uplink transmission direction, NR supports two transmission modes: codebook-based PUSCH transmission and non-codebook-based PUSCH transmission.

Uplink transmission based on non-codebook: by utilizing the uplink and downlink channel dissimilarity, without a predefined codebook, the UE determines at least one candidate precoding according to downlink signal measurement, transmits SRS signals through the candidate precoding, one SRS corresponds to one candidate precoding, selects the optimal SRS after receiving the SRS, and transmits SRS resource indication (SRS resource indicator, SRI) to the UE. Wherein, the SRI is used for indicating SRS resource index value. The UE may determine a precoding for transmitting PUSCH according to the SRI.

For codebook-based PUSCH transmission, a base station configures at least one SRS resource, each SRS resource having at least one SRS port, each SRS port corresponding to one UE transmit antenna/transmit channel/transmit link. And the UE transmits SRS signals on SRS resources according to the SRS configuration, the base station determines the TPMI from the codebook through the received SRS signals and transmits the TPMI to the UE, and the UE can determine the precoding for transmitting the PUSCH according to the TPMI. I.e. the antenna and phase for transmitting PUSCH is determined by TPMI. TPMI may also be used to indicate the number of transport layers. TPMI is expressed in a matrix form of m×n, where M corresponds to the number of transmit antennas, and also corresponds to the number of ports of SRS resources, and N corresponds to the number of transmission layers.

For example, a string of coded bits [ y ] ⁽⁰⁾ (i) ... y ^(υ-1) (i)] ^T Precoding may be performed according to TPMI:

wherein (1)>

{p ₀ ,...,p _ρ-1 And the UE transmit antenna port corresponds to the SRS port.

The following table illustrates pre-agreed codebooks under different configurations, and the base station may pre-select a table, then select a TPMI from the table, and transmit the selected TPMI to the UE through DCI.

As shown in table 1, when the number of transmit antenna ports=2 and the number of transmission layers=1, the TPMI index (index) may have any one of values 0 to 5, and one TPMI index corresponds to one precoding matrix.

TABLE 1

As shown in table 2, in the case where the number of transmit antenna ports=2 and the number of transmission layers=2, TPMI index may be any one of 0 to 2, and one TPMI index corresponds to one precoding matrix.

TABLE 2

As shown in table 3, when the number of transmit antenna ports=4 and the number of transmission layers=1, a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform is used, and the TPMI index may have any one of values 0 to 27, and one TPMI index corresponds to one precoding matrix.

TABLE 3 Table 3

As shown in table 4, when the number of transmit antenna ports=4 and the number of transmission layers=1, a discrete fourier transform Spread orthogonal frequency division multiplexing (Discrete Fourier Transform-Spread OFDM, DFT-S-OFDM) waveform is used, and the TPMI index may have any one of values 0 to 27, and one TPMI index corresponds to one precoding matrix.

TABLE 4 Table 4

As shown in table 5, when the number of transmit antenna ports=4 and the number of transmission layers=2, the TPMI index may have any one of values 0 to 21, and one TPMI index corresponds to one precoding matrix.

TABLE 5

As shown in table 6, when the number of transmit antenna ports=4 and the number of transmission layers=3, the TPMI index may have any one of values 0 to 6, and one TPMI index corresponds to one precoding matrix.

TABLE 6

As shown in table 7, when the number of transmit antenna ports=4 and the number of transmission layers=4, the TPMI index may have any one of values 0 to 4, and one TPMI index corresponds to one precoding matrix.

TABLE 7

The values of the TPMI indexes in the above tables do not consider the coherence capability of different UEs. The UE supports uplink multi-antenna transmission, but the hardware radio frequency design of different UEs may generate a situation that uplink multiple antenna ports satisfy coherent transmission or do not satisfy coherent transmission. Such as the distance between the antennas of the UE, radio frequency channel amplifiers, phase control capabilities, etc. The uplink transmission needs to take into account the coherence capabilities of the different UEs.

The coherence capabilities of three UEs are defined in NR:

(1) Fully-Coherent: all antenna ports of the UE may be coherent for transmission.

(2) real-Coherent: the partial coherence is divided into coherent groups, two coherent antennas in each group can perform coherent transmission, and the coherent transmission cannot be performed among different groups.

(3) Non-Coherent: incoherent, multi-antenna ports are not capable of coherent transmission.

In the PUSCH transmission based on the codebook, the base station limits the codebook use according to the coherence capability of the UE. Specifically, codebook subset configuration is indicated by a radio resource control (radio resource control, RRC) parameter codebook subset (codebook subset). Among them, codebook subset includes fullyAndPartialAndNonCoherent, nonCoherent and partialanddnoncoupler. The number of TPMI or TPMI range that can be indicated by the DCI is different under different codebook subsets. In the existing protocol, it is specified that a partially coherent UE cannot configure full coherence and a non-coherent UE cannot configure full coherence and partial coherence.

In the application, the base station configures the UE with full coherence, which can be equal to fullyAndPartialAndNonCoherent; the base station configures partial coherence for the UE, which may be equivalent to partialanddnoncoherent; the base station configures the UE incoherently, which may be equivalent to a nocontent.

The following table illustrates designs of DCI indication TPMI and transport layer number under different configurations. The number of TPMI or TPMI range that can be indicated by the DCI is different under different codebook subsets. Where x layer indicates that the number of transmission layers is x, tpmi=x corresponds to the precoding matrix numbered x in each table. The number of transmission layers may be understood as the number of MIMO layers or as the number of columns of a codebook matrix.

As shown in table 8, in the case where the number of transmit antenna ports=2 and the number of transmission layers=1, the TPMI values in table 8 correspond to the corresponding precoding matrix in table 1, DCI indicates one row in the table, and when codebook subset is configured as fullyantipartialdnoncoher, it is read in the left column, and when codebook subset is configured as nocoeher, it is read in the right column.

For example, when the codebook subset of the UE is configured to be incoherent, tpmi=0 or 1, and the number of non-zero elements of each column of the right column-corresponding codebook (e.g., table 1) is 1. Alternatively, it is understood that when two rf chains are incoherent, the elements corresponding to the two rf chains in the same column of the codebook cannot be non-zero elements at the same time. When the codebook subset of the UE is configured as the fullyanpartialandnoncoupler, TPMI may also be 2, 3, 4 or 5, and the number of non-zero elements in each column of the codebook (e.g. table 1) corresponding to the left column may be 2. Alternatively, it is understood that when two rf chains are coherent, the elements corresponding to the two rf chains in the same column of the codebook may be non-zero elements at the same time.

TABLE 8

As shown in table 9, when the number of transmit antenna ports=2 and the maximum number of transmission layers=2, the TPMI values in table 9 correspond to the corresponding precoding matrix in table 1 or table 2, and DCI indicates one row in the table. When codebook subset is configured as fullyand partialand dnonpixel, it is read in the left column, and when codebook subset is configured as non-pixel, it is read in the right column.

TABLE 9

As shown in table 10, when the number of transmit antenna ports=4 and the maximum number of transmission layers=1, the TPMI values in table 10 correspond to the corresponding precoding matrix in table 3 or table 4, and the DCI indicates one row in the table. When codebook subset is configured as fullyand partialand dnonpixel, read in the left column; when codebook subset is configured as partialAndNONCoether, it is interpreted according to the middle column; when codebook subset is configured to be read as a non-coherent column on the right.

For example, when the codebook subset of the UE is configured to be incoherent, the TPMI index has any one of values 0 to 3, and the number of non-zero elements in each column of the codebook (e.g., table 3) corresponding to the right column is 1. Alternatively, it may be understood that when four rf chains are incoherent, one element of the four rf chains corresponding to the same column of the codebook is a non-zero element. When the codebook subset of the UE is configured to be partially coherent, the TPMI index may also have any one of 4 to 11, and the number of non-zero elements in each column of the codebook (e.g. table 3) corresponding to the middle column may be 2. Alternatively, it is understood that when four rf chains are partially coherent, two elements of the four rf chains in the corresponding four elements of the same column of the codebook may be non-zero elements. When the codebook subset of the UE is configured to be fully coherent, the TPMI index may also have any one of 12 to 27, and the number of non-zero elements in each column of the codebook (e.g., table 3) corresponding to the left column may be 4. Alternatively, it is understood that when four rf chains are coherent, the four elements corresponding to the four rf chains in the same column of the codebook may be non-zero elements at the same time.

In the present application, the coherence switching or changing of the UE (or the coherence switching or changing of a carrier in a certain frequency band) may be understood that the range of a codebook that the UE may select when the base station schedules or configures the UE to transmit changes. For example, before switching the coherence, the coherence of the carrier of the UE is incoherent, and as shown in table 8, when the number of transmit antenna ports=2 and the number of transmission layers=1, the UE can use only the codebook included in the right column. After switching the coherence, the base station instructs the coherence switching of the carrier wave of the UE to full coherence, and as shown in table 8, when the number of transmission antenna ports=2 and the number of transmission layers=1, the UE uses the codebook included in the left column. For another example, before switching the coherence, the coherence of the carrier of the UE is incoherent, and as shown in table 10, when the number of transmit antenna ports=4 and the number of transmission layers=1, the UE can use only the codebook included in the right column. After switching the coherence, the base station instructs the coherence switching of the carrier wave of the UE to full coherence, and as shown in table 10, when the number of transmission antenna ports=4 and the number of transmission layers=1, the UE uses the codebook included in the left column. Alternatively, after switching the coherence, the base station instructs the coherence switching of the carrier wave of the UE to partial coherence, and as shown in table 10, when the number of transmission antenna ports=4 and the number of transmission layers=1, the UE uses the codebook included in the middle column.

Table 10

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As shown in table 11, in the case where the number of transmit antenna ports=4 and the maximum number of transmission layers=2/3/4, the TPMI values in table 11 correspond to the corresponding precoding matrices in tables 3 to 7, and DCI indicates one line in the table. When codebook subset is configured as fullyand partialand dnonpixel, read in the left column; when codebook subset is configured as partialAndNONCoether, it is interpreted according to the middle column; when codebook subset is configured to be read as a non-coherent column on the right.

TABLE 11

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As shown in table 12, table 12 makes statistics on DCI bit overhead under different configurations. Where NC represents nonCoherent, PC represents partialAndNonCoherent, FC represents FullyAndPartialAndNONCoeherent. For example, when the number of transmission antenna ports is 2, the maximum transmission layer number=1, and the codebook subset is configured as non-coherent, 1 bit in DCI is required for indication. When the number of transmit antenna ports is 4, the maximum number of transmission layers=2, and codebook subset is configured as partialanddnoncoefficient, 5 bits in DCI are required for indication.

Table 12

	2T NC	2T FC	4T NC	4T PC	4T FC
						Maximum number of transmission layers=1	1bit	3bit	2bit	4bit	5bit
Maximum number of transmission layers=2	2bit	4bit	4bit	5bit	6bit
						Maximum number of transmission layers=3			4bit	5bit	6bit
Maximum number of transmission layers=4			4bit	5bit	6bit

1 SRS resource may be configured based on uplink transmission of the codebook, if multiple SRS resources are configured, one SRS resource corresponds to one transmission beam/transmission antenna group, and the base station needs to first select one SRS resource from the multiple SRS resources by using the SRI, that is, select the transmission beam/transmission antenna group, and further instruct the TPMI, where the TPMI is used to instruct a precoding matrix acting on the transmission beam/transmission antenna group corresponding to the selected SRS resource.

The transmit channel (TX), which is a physical concept, may also be referred to as a Radio Frequency (RF) transmit channel, is collectively referred to herein as a transmit channel. In the embodiment of the present application, the transmitting channel may operate in the following manner, but is not limited to the following manner: the transmit channel may receive baseband signals from the baseband chip, perform radio frequency processing (e.g., up-conversion, amplification, and filtering) on the baseband signals to obtain radio frequency signals, and finally radiate the radio frequency signals into space through the antenna. In particular, the transmit channel may include antenna switches, antenna tuners, low noise amplifiers (low noise amplifier, LNAs), power Amplifiers (PAs), mixers (mixers), local Oscillators (LOs), filters, etc., which may be integrated into one or more chips as desired. The antenna may also sometimes be considered part of the transmit channel. In the embodiment of the application, the transmitting channels are simply called radio frequency chains. Alternatively, the rf chains in this application may be replaced by Tx, antenna, radio frequency, transmit channel, transmit port, receive channel, or any combination thereof.

Two methods for reporting coherence capability are presented below, including:

in the first method, the coherence capability of the UE is reported by per band. per Band means that the coherence capability of the UE in each Band is unchanged, whether in a single Band or in Band Combination (BC).

The second approach, per band per BC, indicates Uplink (UL) multiple-input multiple-output (MIMO) coherence capability. The reason is that the same Band may be different UL MIMO coherence capabilities in different BC. In this application, UL MIMO coherence capability and coherence capability can be interchanged.

For example, the antenna sets used by the same Band are different at different BC. As another example, in the case of carrier aggregation (carrier aggregation, CA), the two Tx at Band1 may be coherent (rf chain 1 and rf chain 2 share one LO). In the non-CA case, the relationship between 4Tx may be fully coherent (4 rf chains share one LO), partially coherent (rf chain 1 and rf chain 2 share one LO, rf chain 3 and rf chain 4 share another LO), or non-coherent (rf chain 1 and rf chain 2 share one LO, and rf chain 3 and rf chain 4 share two other LOs). If the LOs used by some two radio frequency chains are not the same LO, the phases of the two radio frequency chains may not be synchronous, and coherent transmission cannot be performed, so that the UE cannot use a codebook with coherence when using the two radio frequency chains for uplink transmission. I.e. the corresponding elements of the two radio frequency chains in the same column of the codebook cannot be non-zero elements at the same time.

The UE informs the base station of which bands the UE supports carrier aggregation by reporting BC. And when the UE reports the BC, the UE simultaneously reports the parameters corresponding to the BC. The parameters corresponding to the BC include parameters of the UE on each Band in the BC. The UE may report multiple sets of parameters, each set including parameters for each Band in the BC, so that the base station selects a set of parameters from the multiple sets of parameters to configure the UE. Wherein the parameters on each Band include carrier parameters on each carrier in the Band. The UE may also report multiple sets of carrier parameters, where the number of sets of carrier parameters needs to be greater than or equal to the number of carriers supported by the UE on the Band. The base station may configure any set of carrier parameters of the Band reported by the UE to any carrier in the Band. That is, the parameters of the Band level reported by the UE are in one-to-one correspondence with bands in the BC, but the carrier parameters of the bands have no correspondence with carriers of the bands, and may be configured to any carrier in the bands.

Whether the per Band reporting capability or the per Band per BC reporting capability, the coherence capability of UE reporting is fixed, so that the high coherence of a frequency Band or a carrier cannot be fully utilized when the UE switches radio frequency chains between different bands or carriers contained in different bands, and the throughput of uplink transmission is affected. In order to solve the technical problems described above, the embodiments of the present application provide the following solutions.

In the present application, switching a radio frequency chain between frequency bands or carriers may be understood that the UE adjusts parameters of the radio frequency chain, so that the UE may use the radio frequency chain to switch from a first frequency band to a second frequency band for uplink transmission, or use the radio frequency chain to switch from the first carrier to the second carrier for uplink transmission. If multiple frequency bands or multiple carriers are similar in frequency, the multiple frequency bands or multiple carriers may be transmitted simultaneously using the same radio frequency chain.

Referring to fig. 2, fig. 2 is a flow chart of a communication method according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:

s201, the UE acquires first configuration information, where the first configuration information is used to indicate that the coherence on at least one carrier is allowed to be indicated by downlink control information DCI or a medium access control unit MAC CE.

Optionally, the base station may send the first configuration information to the UE, and the UE receives the first configuration information sent by the base station. The first configuration information may be included in RRC signaling, and the first configuration information may be a parameter in the RRC signaling. Through the first configuration information, the UE can learn whether the base station allows the UE to perform dynamic coherence change, so that the UE can determine whether to identify the signaling of dynamically changing coherence.

Specifically, whether to allow the indication of coherence on at least one carrier through DCI or MAC CE may be determined by whether the parameter is included in RRC signaling. For example, if the parameter is included in RRC signaling, it indicates that the coherence on at least one carrier is allowed to be indicated by DCI or MAC CE; if the parameter is not included in the RRC signaling, it indicates that the indication of coherence on at least one carrier by DCI or MAC CE is not allowed. Alternatively, it is determined whether or not the indication of coherence on at least one carrier by DCI or MAC CE is allowed by the value of this parameter in RRC signaling. For example, if the value of the parameter is 1 or Ture, it indicates that the coherence on at least one carrier is allowed to be indicated by DCI or MAC CE, and if the value of the parameter is 0 or False, it indicates that the coherence on at least one carrier is not allowed to be indicated by DCI or MAC CE.

Optionally, before the UE acquires the first configuration information, parameters corresponding to the Band Combination (BC) may be reported to the base station, including the following two optional manners:

in a first alternative manner, the UE sends, to the base station, a plurality of sets of parameters corresponding to the first frequency band combination, where each set of parameters in the plurality of sets of parameters includes coherence capability of each frequency band in the first frequency band combination supported by the UE, and coherence capability on at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different. Because the coherence capability of at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different, the base station can know that the coherence capability of the UE on at least one frequency band in the first frequency band combination can be changed, and the base station can switch the coherence on at least one frequency band of the first frequency band combination in a dynamic or semi-static mode. By adopting the reporting mode, the base station UE can be informed of the coherence conditions of other frequency bands or other carriers when the coherence dynamic switching is carried out on one frequency band or one carrier. Meanwhile, the method avoids that the UE can be indicated to perform dynamic coherence switching through explicit signaling, and saves signaling overhead.

Wherein each set of parameters of the plurality of sets of parameters may further comprise one or more of: the number of transmission layers supported by the UE, subcarrier spacing and bandwidth.

For example, as shown in fig. 3, a BC includes at least a Band a (Band a) and a Band B (Band B), and the UE reports at least two sets of parameters corresponding to the BC to the base station, where the first set of parameters are: the coherence capability of Band A is partially coherent (the radio frequency chains on the frequency Band are radio frequency chain 1 and radio frequency chain 2), and the coherence capability of Band B is incoherent (the radio frequency chains on the frequency Band are radio frequency chain 3 and radio frequency chain 4); a second set of parameters: the coherence capability of Band a is incoherent (the rf chains in the Band are rf chains 3 and 4), and the coherence capability of Band B is partially coherent (the rf chains in the Band are rf chains 1 and 2). Wherein, the radio frequency chain 1 and the radio frequency chain 2 of the UE share one LO, the radio frequency chain 3 and the radio frequency chain 4 do not share one LO, the radio frequency chain 3 uses one LO, and the radio frequency chain 4 uses the other LO. In this way, in the two groups of parameters, the coherence capability of the frequency band A and the frequency band B are different, the base station can know that the coherence capability of the UE on the frequency band A and the frequency band B can be changed, and the base station can switch the coherence of the frequency band A and the frequency band B in a dynamic or semi-static mode.

Since the number of uplink ports (ports) is only 4 at maximum, when the number of ports in one band is 4, it is possible to indicate that 4Tx are fully coherent, 2Tx coherent out of 4Tx, and any two Tx out of 4Tx are incoherent by three amounts (fully coherent, partially coherent, and incoherent). When the number of ports of one band is 2, 2Tx full coherence and two Tx incoherent can be represented by two amounts (full coherence and incoherent). However, it is not sufficient to express the coherence capability of 8Tx by two or three amounts, for example, if the UE supports 8Tx on one carrier, the coherence can be expressed using 8 Tx-level coherence, 4 Tx-level coherence, 2 Tx-level coherence, incoherence. Wherein 8 Tx-level coherence means that all 8Tx are coherent, 4 Tx-level coherence means that all 4Tx in two groups of 4Tx are coherent, 2 Tx-level coherence means that all 2Tx in four groups of 2Tx are coherent, and incoherent means that all 8Tx are incoherent. UEs with coherence capability of 4Tx level coherence cannot be configured as 8Tx level coherence, UEs with coherence capability of 2Tx level coherence cannot be configured as 8Tx and 4Tx level coherence, and so on.

In the present application, 4 Tx-level coherence means that 4Tx in at least one Tx group including 4Tx out of all Tx of one Band are all coherent, and Tx in any Tx group greater than 4Tx are not completely coherent. 2Tx level coherence means that at least 2Tx in a Tx group containing 2Tx out of all Tx of one Band are coherent, and any Tx in a Tx group greater than 2Tx is not completely coherent, and so on. The following examples are given by way of example only, with the number of uplink ports being 4, the 4 Tx-level coherence corresponding to full coherence, and the 2 Tx-level coherence corresponding to partial coherence.

For example, as shown in fig. 4, a BC at least includes a Band a (Band a) and a Band B (Band B), and the UE reports at least two sets of parameters corresponding to the BC to the base station, where the first set of parameters are: the coherence capability of Band A is 4 Tx-level coherence, and Band A corresponds to radio frequency chain 1, radio frequency chain 2, radio frequency chain 3 and radio frequency chain 4; band B has coherence capability of 2 Tx-level coherence, and Band B corresponds to rf chain 5, rf chain 6, rf chain 7, and rf chain 8. A second set of parameters: the coherence capability of Band A is 2 Tx-level coherence, and Band A corresponds to a radio frequency chain 5, a radio frequency chain 6, a radio frequency chain 7 and a radio frequency chain 8; band B has coherence capability of 4 Tx-level coherence, and Band B corresponds to rf chain 1, rf chain 2, rf chain 3, and rf chain 4. At this time, it can be understood that the radio frequency chain 1, the radio frequency chain 2, the radio frequency chain 3 and the radio frequency chain 4 of the UE share LO1; radio frequency chain 5 and radio frequency chain 6 share LO2, and radio frequency chain 7 and radio frequency chain 8 share LO3. In this way, in the two groups of parameters, the coherence capability of the frequency band A and the frequency band B are different, the base station can know that the coherence capability of the UE on the frequency band A and the frequency band B can be changed, and the base station can switch the coherence of the frequency band A and the frequency band B in a dynamic or semi-static mode.

Optionally, the highest coherence capability of at least two frequency bands in the first frequency band combination is located in two different sets of parameters in the plurality of sets of parameters. For example, as shown in fig. 4, among at least two sets of parameters corresponding to BC, the first set of parameters: band a has coherence capability of 4 Tx-level coherence and Band B has coherence capability of 2 Tx-level coherence; a second set of parameters: band a has coherence capability of 2 Tx-level coherence and Band B has coherence capability of 4 Tx-level coherence. The highest coherence capability of Band a is located in the first set of parameters and the highest coherence capability of Band B is located in the second set of parameters. The highest coherence capabilities of Band a and Band B are located in the two sets of parameters, respectively. In this way, the base station can know that the highest coherence capability of the UE in Band a and Band B is respectively located in two sets of parameters, the coherence capability on Band a or Band B can be changed, and the base station can switch the coherence on Band a or Band B of the first frequency Band combination in a dynamic or semi-static mode.

In this application, the coherence of a frequency band is understood to be the coherence of the carrier wave contained in the frequency band. The coherence of a carrier is also understood to be the coherence of the frequency band to which the carrier belongs.

Optionally, the UE may send second indication information to the base station, where the second indication information is used to indicate that the UE supports switching the coherence of the frequency band to which the at least one carrier belongs. That is, the second indication information may be used to indicate that the UE supports dynamic switching or dynamically changes the coherence of the frequency band to which the at least one carrier belongs. By directly informing the base station whether the UE supports the dynamic switching coherence, the base station can more clearly acquire the coherence capability of the UE, reduce the process of the base station for judging whether the UE supports the dynamic switching coherence, and simplify the judgment flow.

For example, the UE reports two sets of parameters corresponding to one BC, the first set of parameters: band a has a coherence capability of 4 Tx-level coherence, band B has a coherence capability of 2 Tx-level coherence, a second set of parameters: band a has coherence capability of 2 Tx-level coherence and Band B has coherence capability of 2 Tx-level coherence. The coherence capability of Band a is different in the two sets of parameters. Wherein carrier 1 belongs to Band a and carrier 2 belongs to Band B. At this time, the UE may report second indication information to the base station, where the second indication information is used to indicate that the UE supports the coherence of Band a to which the dynamic switching carrier 1 belongs.

For another example, the UE reports two sets of parameters corresponding to one BC, the first set of parameters: band a has coherence capability of 4 Tx-level coherence and Band B has coherence capability of 2 Tx-level coherence; a second set of parameters: band a has coherence capability of 2 Tx-level coherence and Band B has coherence capability of 4 Tx-level coherence. The coherence capability of Band a in the two sets of parameters is different, as is the coherence capability of Band B in the two sets of parameters. At this time, the UE may report second indication information to the base station, where the second indication information is used to indicate that the UE supports the coherence of Band a to which the dynamic switching carrier 1 belongs and/or the coherence of Band B to which the carrier 2 belongs.

The second alternative: the method comprises the steps that UE sends at least one group of parameters corresponding to a first frequency band combination to a base station, wherein the at least one group of parameters comprise coherence capability of at least two frequency bands in the first frequency band combination supported by the UE, and coherence on the at least two frequency bands cannot be the coherence capability indicated by the at least one group of parameters at the same time. For example, the UE reports a set of parameters corresponding to BC, including: band a has coherence capability of 4 Tx-level coherence and Band B has coherence capability of 4 Tx-level coherence. The 4 Tx-level coherence is the highest coherence capability of Band a and the highest coherence capability of Band B. The 4 Tx-level coherence of Band a and the 4 Tx-level coherence of Band B cannot be reached at the same time. By adopting the method for reporting the parameters, the number of the parameters reported by the UE can be reduced.

Here, the 4 Tx-level coherence of Band a and the 4 Tx-level coherence of Band B cannot be achieved at the same time, and it can be understood that Band a and Band B cannot be 4 Tx-level coherent at the same time. For example, both carrier a and carrier B are configured to be 4Tx level coherent, but the UE does not want the base station to instruct the UE to schedule 4port transmissions on both carriers at the same time, or 4Tx level coherent and greater than 2Tx level coherent transmissions, through DCI or MAC CE. That is, the UE does not want the base station to indicate through DCI or MAC CE that the number of non-zero elements in any one column of the codebook used by the UE in carrier a and carrier B at the same time is greater than 2. As another example, if the UE is coherent at 4Tx levels at the first time Band a, then the coherence at the first time Band B cannot be coherent at 4Tx levels. After reaching the second time, if the coherence of Band a is 2 Tx-level coherence, the coherence of Band B may be 4 Tx-level coherence.

Optionally, the UE sends third indication information to the base station, where the third indication information is used to indicate coherence capability that the coherence on the at least two frequency bands cannot be indicated for the at least one set of parameters at the same time. The third indication information may be an indication field, or a set including at least two frequency bands, where coherence capability of the at least two frequency bands cannot be achieved at the same time.

For example, a BC at least includes a Band a (Band a) and a Band B (Band B), and the UE reports at least one set of parameters corresponding to the BC to the base station: the coherence capability of Band a is 4 Tx-level coherence (when the rf chains on the Band are rf chain 1, rf chain 2, rf chain 3, and rf chain 4), 4 Tx-level coherence is the highest coherence capability of Band a, and the coherence capability of Band B is 4 Tx-level coherence (when the rf chains on the Band are rf chain 1, rf chain 2, rf chain 3, and rf chain 4), 4 Tx-level coherence is the highest coherence capability of Band B. When both the coherence capability of Band a and the coherence capability of Band B are 4 Tx-level coherence, the radio frequency chains used by Band a and Band B are the same, and thus the 4 Tx-level coherence of Band a and the 4 Tx-level coherence of Band B cannot be achieved at the same time. The UE may transmit third indication information to the base station informing that the coherence of the base stations Band a and Band B cannot be coherent at the same time of 4Tx level. By reporting the third indication information, the base station can more clearly acquire the coherence capability of the UE, and the judging process of the base station is reduced.

Note that, the radio frequency chains 1, 2, 3, and 4 of the UE correspond to one LO. The third indication information may be an indication field or a set including Band a and Band B, in which the coherence capability of Band a and Band B cannot be achieved at the same time.

Optionally, when the coherence of any one of the at least two frequency bands in the first frequency band combination is smaller than the reported coherence capability, the coherence of the at least two frequency bands may be the coherence capability indicated by the at least one set of parameters at the same time.

For example, the highest coherence capability of Band a and Band B is 4 Tx-level coherence, and if Band a current coherence is 4 Tx-level coherence and Band B current coherence is 2 Tx-level coherence, band a current 4 Tx-level coherence and Band B current 2 Tx-level coherence can be achieved at the same time. However, if Band a current coherence is 4Tx level coherence, band B current coherence is also 4Tx level coherence, and Band a current 4Tx level coherence and Band B current 4Tx level coherence cannot be achieved at the same time. Alternatively, if Band a current coherence is 4Tx level coherent, band B current coherence cannot be 4Tx level coherent, and Band B current coherence may be 2Tx level coherent or noncoherent.

Optionally, the base station may send second configuration information to the UE, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers may be highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong. The highest coherence of the at least two frequency bands is contained in at least two groups of parameters reported by the UE, and coherence capability of the at least two frequency bands in the at least two groups of parameters is different. Or, the highest coherence of the at least two frequency bands is included in a set of parameters reported by the UE, where the coherence capability of the at least two frequency bands in the set of parameters cannot be reached at the same time.

For example, carrier 1 belongs to Band a, carrier 2 belongs to Band B, and the base station can configure the coherence of both carrier 1 and carrier 2 to be 4 Tx-level coherence through the second configuration information. The 4 Tx-level coherence is the highest coherence reported by Band a and Band B, and the 4 Tx-level coherence of carrier 1 and the 4 Tx-level coherence of carrier 2 cannot be achieved at the same time. By configuring the highest coherence of the carrier, the coherence of the carrier is flexibly changed by DCI or MAC CE without exceeding the coherence of the carrier configured by the base station.

Wherein the at least two carriers are carriers supporting uplink Tx switching. Alternatively, the at least two carriers are carriers that can support dynamic handoff coherence. Or, the coherence capability of at least one frequency band in at least two groups of parameters corresponding to the frequency band combination to which the at least two carriers belong is different. Or, the coherence on the frequency band to which the at least two carriers belong cannot be the coherence capability indicated by the at least one set of parameters at the same time.

Further, the base station does not need to configure the coherence of at least two carriers for the UE according to parameters corresponding to the frequency band combination reported by the UE, where the coherence of at least two carriers is the highest coherence of at least two frequency bands in the frequency band combination to which the at least two carriers belong. For example, the UE reports the first set of parameters as: band a has coherence capability of 4 Tx-level coherence, band B has coherence capability of 2 Tx-level coherence, and the second set of parameters is: band a has coherence capability of 2 Tx-level coherence and Band B has coherence capability of 4 Tx-level coherence. The base station may configure the UE with carrier 1 coherent to 4Tx level coherent and carrier 2 coherent to 4Tx level coherent. The 4 Tx-level coherence of the carrier 1 and the 4 Tx-level coherence of the carrier 2 are independent of the parameters reported by the UE, i.e. the coherence of the carrier configured by the base station to the UE is neither the first nor the second set of parameters, but the highest coherence of each frequency band in the two sets of parameters. Wherein carrier 1 belongs to Band a and carrier 2 belongs to Band B.

Or, the base station may also configure the coherence of at least two carriers for the UE according to the parameters corresponding to the frequency band combination reported by the UE. For example, the UE reports a set of parameters including: band a has coherence capability of 4 Tx-level coherence and Band B has coherence capability of 2 Tx-level coherence. The base station may configure the UE with carrier 1 coherent to 4Tx level coherent and carrier 2 coherent to 2Tx level coherent. The 4Tx level coherence of carrier 1 and the 2Tx level coherence of carrier 2 correspond to parameters reported by the UE. Wherein carrier 1 belongs to Band a and carrier 2 belongs to Band B.

It should be noted that the first configuration information and the second configuration information may be two different signaling, for example, the first configuration information may be included in the RRC signaling, and the second configuration information may be included in the second RRC signaling. Alternatively, the first configuration information and the second configuration information may be included in the same RRC signaling. Alternatively, one field in RRC signaling carries second configuration information, which is a special value (which may be 0 or 1, tube or False, or special coherence), by which it is indicated that the coherence on at least one carrier is allowed to be indicated by DCI or MAC CE. Alternatively, the first configuration information is implicitly indicated by the second configuration information indicating that the coherence of the configured at least two carriers cannot be reached at the same time. Alternatively, the first configuration information is implicitly indicated by the second configuration information being that the coherence of at least two carriers is configured to be the highest coherence that cannot be reached at the same time. The highest coherence of the at least two carriers may be reported by at least two sets of parameters, respectively, or by the same set of parameters.

For example, the UE reports a set of parameters corresponding to BC, including: the coherence capability of Band a is 4 Tx-level coherence, the coherence capability of Band B is 4 Tx-level coherence, and Band a coherence capability and Band B coherence capability cannot be achieved at the same time. Or two groups of parameters corresponding to one BC reported by the UE are respectively as follows: band a has coherence capability of 4 Tx-level coherence and Band B has coherence capability of 2 Tx-level coherence; band a has coherence capability of 2 Tx-level coherence and Band B has coherence capability of 4 Tx-level coherence. Then, the base station configures the UE with Band a coherence of 4Tx level coherence, and Band B coherence of 4Tx level coherence, and Band a 4Tx level coherence and Band B4 Tx level coherence cannot be achieved at the same time. Thus, the first configuration information is implicitly indicated, i.e. the coherence on at least one carrier is indicated by the DCI or the MAC CE. I.e. the implicit indication may dynamically change the coherence on at least one carrier via DCI or MAC CE. At this time, the UE may implicitly obtain the first configuration information through an indication of the second configuration information.

S202, the UE receives the DCI or the MAC CE from the base station, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs.

Specifically, the first indication information may include the following indication modes:

the first indication mode is that the first indication information carries the most significant bit in the indication field in the DCI, or the bit in the indication field in the DCI, or one column in the time domain resource allocation cell. For example, the time domain resource Allocation cell may be a PUSCH time domain resource Allocation cell (PUSCH-Time Domain Resource Allocation) or a PUSCH Allocation cell (PUSCH-Allocation).

For example, the coherence of carrier 1 and carrier 2 is configured by the second configuration information to be 4 Tx-level coherence, and 4 Tx-level coherence is the highest coherence of Band a and Band B, and cannot be achieved at the same time. The indication field in the DCI indicates the coherence of dynamically switching carrier 1 and carrier 2, and before switching the coherence of carrier 1 and carrier 2, the coherence of carrier 1 is 2 Tx-level coherence and the coherence of carrier 2 is 4 Tx-level coherence. After switching the coherence of carrier 1 and carrier 2, the coherence of carrier 1 is 4Tx level coherence and the coherence of carrier 2 is 2Tx level coherence.

For another example, the coherence of the carrier 1 and the carrier 2 is configured by the second configuration information to be the 4 Tx-level coherence, and the 4 Tx-level coherence is the highest coherence of Band a and Band B, and cannot be achieved at the same time. The indication field in the DCI indicates the coherence of dynamically switching carrier 1 and carrier 2, before switching the coherence of carrier 1 and carrier 2, the coherence of carrier 1 is 4 Tx-level coherence, the coherence of carrier 2 is 4 Tx-level coherence, and the 4 Tx-level coherence of carrier 1 and the 4 Tx-level coherence of carrier 2 cannot be reached at the same time. After switching the coherence of carrier 1 and carrier 2, the coherence of carrier 1 is 4Tx level coherence and the coherence of carrier 2 is 2Tx level coherence.

As another example, a list of PUSCH time domain resource allocation cells may represent coherence, and the base station may configure the UE with one or more PUSCH time domain resource allocation cells, some or all of which may include coherence, and when the base station selects one PUSCH time domain resource allocation cell through DCI, the coherence of the carrier is determined by an indication of the coherence in the selected PUSCH time domain resource allocation cell. PUSCH allocation cells are also similar. This method may not increase the size of DCI.

And in a second indication mode, the first indication information indicates the value range of the numerical value indicated by the TPMI domain or the value range of the numerical value indicated by the precoding information and the layer number domain through the transmission precoding matrix in the DCI.

For example, the UE may have a second coherence for carrier 1 and a third coherence for carrier 2 before receiving the DCI. After receiving the DCI, the interval in which the value indicated by the TPMI field of carrier 1 is located belongs to the value range corresponding to the first coherence, but does not belong to the value range corresponding to the second coherence, so that the coherence of carrier 1 is switched from the second coherence to the first coherence. The interval in which the value indicated by the TPMI field of carrier 2 is located belongs to the value range corresponding to the third coherence, so that the coherence of carrier 2 is still the third coherence. Wherein the second coherence is less than the first coherence. "less than" may also be understood as "lower than". For example, the first coherence is full coherence and the second coherence is partial coherence, which is lower than the first coherence because the partial coherence is lower than the full coherence. Alternatively, the first coherence is partially coherent and the second coherence is incoherent, and the second coherence is lower than the first coherence because the incoherent coherence is lower than the partially coherent coherence.

As another example, before receiving the DCI, both carrier 1 and carrier 2 are configured to be 4 Tx-level coherent (or full coherent), the 4 Tx-level coherent of carrier 1 and the 4 Tx-level coherent of carrier 2 cannot be reached at the same time (or before receiving the DCI, carrier 1 is 2 Tx-level coherent and carrier 2 is 4 Tx-level coherent), and the maximum number of transmission layers at both carrier 1 and carrier 2 is 2 or 3 or 4 (corresponding table 11). After receiving the DCI, the value ranges of the precoding information of the carrier 1 and the number of layers indicated by the layer domain are 32-61, and the value ranges of the precoding information of the carrier 2 and the number of layers indicated by the layer domain are 0-31, which indicates that the UE switches the coherence of the carrier 1 to 4 Tx-level coherence (or full coherence) and the coherence of the carrier 2 to 2 Tx-level coherence (or partial coherence), so that the coherence switching of the carrier is realized through the DCI indication.

Carrier 1 and carrier 2 are carriers that can support uplink Tx handover. Alternatively, carrier 1 and carrier 2 are carriers that can support dynamic switching coherence. Or, the coherence capability of the frequency band to which the carrier 1 and the carrier 2 belong is different in at least two sets of parameters. Alternatively, the UE indicates that the coherence capability of the frequency band to which carrier 1 belongs and the frequency band to which carrier 2 belongs cannot be achieved at the same time.

Optionally, after the UE receives the DCI or the MAC CE from the base station, when the current coherence of the at least one carrier is less than the coherence of the at least one carrier indicated by the first indication information, the UE sends uplink data to the base station on the at least one carrier after at least a first duration has elapsed.

Alternatively, if the coherence of the UE on one carrier at the time of the present transmission is greater than the coherence of the UE on that carrier at the time of the last transmission, the UE may generate a transmission interruption on that carrier for at least the first time period. If the coherence of each carrier in the plurality of carriers in one carrier group is not greater than the coherence of the respective carrier in the carrier group in the last transmission, no transmission interruption is generated on the plurality of carriers in the carrier group. Wherein, the carrier group is configured by the base station, and the carriers in the carrier group can be mutually switched to Tx or can be switched to coherence. Or, the carriers in the carrier group are carriers which are reported by the UE and are contained in a frequency band capable of carrying out coherence switching or Tx switching.

The first duration is a duration of a switching carrier, a duration of switching coherence, a larger value of the duration of the switching carrier and the duration of switching coherence, or a predefined duration. The UE is interrupted in transmission during the first period of time and cannot transmit uplink data to the base station during the first period of time. If the current coherence of the at least one carrier is greater than or equal to the coherence of the at least one carrier indicated by the first indication information, the UE may send uplink data to the base station in the first time period, that is, the UE may not generate a transmission interruption on the at least one carrier before performing uplink transmission.

For example, the coherence of carrier 1 is 2 Tx-level coherence at or before the reception of DCI. After receiving the DCI, determining that the coherence of the carrier 1 indicated by the first indication information is 4 Tx-level coherence, and since the 2 Tx-level coherence is less than the 4 Tx-level coherence, after completing Tx switching or coherence switching of the carrier 1 in the first time period, uplink data may be transmitted to the base station on the carrier 1.

Further, after the last transmission, if the UE does not experience a transmission interruption for the first duration or the UE does not perform a coherence handover or Tx handover, the coherence of the at least one carrier remains unchanged. For example, if the coherence of the carrier 1 is 4 Tx-level correlation and the coherence of the carrier 2 is 2 Tx-level correlation at the time of the last transmission, but the transmission is not interrupted for the first period of time or the UE does not perform the coherence switching or Tx switching, the coherence of the carrier 2 is still 2 Tx-level coherence and cannot be 4 Tx-level coherence even if only the carrier 2 is scheduled at the time of the next transmission.

In the embodiment of the application, the coherence of at least one carrier is indicated by DCI or MAC CE, the coherence of at least one carrier is switched in a dynamic or semi-static mode, the high coherence among multiple transmission channels is fully utilized, the UE can perform high coherence transmission among different frequency bands as much as possible, and the throughput of uplink transmission is improved.

It should be understood that, in the foregoing embodiments of the methods and operations implemented by the terminal device, the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the terminal device, or the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the network device.

The foregoing description of the solution provided in the embodiments of the present application has been mainly presented from various interaction points of view. It will be appreciated that each network element, e.g. the transmitting device or the receiving device, in order to implement the above-mentioned functions, comprises corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven 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.

The embodiment of the application may divide the functional modules of the terminal device or the network device according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules described above may be implemented either in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will be given by taking an example of dividing each function module into corresponding functions.

The method provided in the embodiment of the present application is described in detail above with reference to fig. 2. The following describes in detail the communication device provided in the embodiment of the present application with reference to fig. 5 to 6. It should be understood that the descriptions of the apparatus embodiments and the descriptions of the method embodiments correspond to each other, and thus, descriptions of details not described may be referred to the above method embodiments, which are not repeated herein for brevity.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may include a receiving module 501 and a transmitting module 502. The receiving module 501 and the transmitting module 502 may communicate with the outside. The receiving module 501 and the transmitting module 502 may also be referred to as a communication interface, a transceiving unit or a transceiving module. The receiving module 501 and the sending module 502 may be configured to perform the actions performed by the terminal device in the above method embodiments.

For example: the receiving module 501 and the transmitting module 502 may also be referred to as a transceiver module or a transceiver unit (including a receiving unit and/or a transmitting unit), and are configured to perform the steps of receiving and transmitting by the terminal device in the above method embodiment, respectively.

In one possible design, the communication device may implement steps or flows performed by the terminal device corresponding to the above method embodiments, for example, may be the terminal device, or a chip or circuit configured in the terminal device. The receiving module 501 and the sending module 502 are configured to perform the operations related to the transceiving of the terminal device in the above method embodiment.

Optionally, the sending module 502 is configured to send, to the network device, a plurality of sets of parameters corresponding to a first frequency band combination, where each set of parameters in the plurality of sets of parameters includes coherence capability of each frequency band in the first frequency band combination supported by the terminal device, and coherence capability on at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different.

The highest coherence capability of at least two frequency bands in the first frequency band combination is located in two different sets of parameters in the multiple sets of parameters.

Optionally, the sending module 502 is configured to send, to the network device, at least one set of parameters corresponding to a first frequency band combination, where the at least one set of parameters includes coherence capability of at least two frequency bands in the first frequency band combination supported by the terminal device, where coherence on the at least two frequency bands cannot be the coherence capability indicated by the at least one set of parameters at the same time.

Optionally, the sending module 502 is further configured to send second indication information to the network device, where the second indication information is used to indicate that the terminal device supports switching of coherence of a frequency band to which the at least one carrier belongs.

Optionally, the receiving module 501 is further configured to receive second configuration information from the network device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

Optionally, the first indication information carries a most significant bit in an indication field or a column in a time domain resource allocation cell in the DCI.

Optionally, the first indication information indicates a value range of a numerical value indicated by the TPMI domain indicated by the transmission precoding matrix in the DCI, or indicates a value range of a numerical value indicated by the precoding information and the layer number domain.

Optionally, the sending module 502 is configured to send uplink data to the network device on the at least one carrier after at least a first duration is elapsed when the current coherence of the at least one carrier is less than the coherence of the at least one carrier indicated by the first indication information, where the first duration is a duration of switching a carrier, a duration of switching a coherence, a duration of switching a carrier, a greater value of the duration of switching a carrier and the duration of switching a coherence, or a predefined duration.

It should be noted that, the implementation of each module may also correspond to the corresponding description of the method embodiment shown in fig. 2, and perform the method and the function performed by the terminal device in the foregoing embodiment.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus may include a transmitting module 601 and a receiving module 602, and the transmitting module 601 and the receiving module 602 may communicate with the outside. The transmitting module 601 and the receiving module 602 may also be referred to as a communication interface, a transceiving module or a transceiving unit. The sending module 601 and the receiving module 602 may be configured to perform the actions performed by the network device in the above method embodiments.

For example: the transmitting module 601 and the receiving module 602 may also be referred to as a transceiver module or transceiver unit (including a transmitting unit and/or a receiving unit), and are configured to perform the steps of transmitting and receiving by the network device in the above method embodiment, respectively.

In one possible design, the communication device may implement steps or flows performed by a network device corresponding to the above method embodiments, for example, may be a network device, or a chip or circuit configured in a network device. The sending module 601 and the receiving module 602 are configured to perform the operations related to the transceiving of the network device side in the above method embodiment.

A sending module 601, configured to send first configuration information to a terminal device, where the first configuration information is used to indicate that coherence on at least one carrier is allowed to be indicated by downlink control information DCI or a medium access control unit MAC CE;

the sending module 601 is further configured to send the DCI or the MAC CE to the terminal device, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs.

Optionally, the receiving module 602 is configured to receive a plurality of sets of parameters corresponding to a first frequency band combination from the terminal device, where each set of parameters in the plurality of sets of parameters includes coherence capability of each frequency band in the first frequency band combination supported by the terminal device, and coherence capability on at least one frequency band in at least two sets of parameters corresponding to the first frequency band combination is different.

Optionally, the receiving module 602 is configured to receive at least one set of parameters corresponding to a first frequency band combination from the terminal device, where the at least one set of parameters includes coherence capability of at least two frequency bands in the first frequency band combination supported by the terminal device, and coherence on the at least two frequency bands cannot be the coherence capability indicated by the at least one set of parameters at the same time.

Optionally, the receiving module 602 is further configured to receive second indication information from the terminal device, where the second indication information is used to indicate that the terminal device supports switching between the frequency bands to which the at least one carrier belongs.

Optionally, the sending module 601 is further configured to send second configuration information to the terminal device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

Optionally, the receiving module 602 is configured to receive uplink data sent by the terminal device on the at least one carrier after at least a first time period is passed when the current coherence of the at least one carrier is less than the coherence of the at least one carrier indicated by the first indication information, where the first time period is a duration of switching a carrier, a duration of switching a coherence, a greater value of the duration of switching a carrier and the duration of switching a dryness, or a predefined duration.

It should be noted that the implementation of each module may also correspond to the corresponding description of the method embodiment shown in fig. 2, and perform the method and the function performed by the network device in the foregoing embodiment.

Fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device may be applied to the system shown in fig. 1, to perform the functions of the terminal device in the above method embodiment, or to implement the steps or flows performed by the terminal device in the above method embodiment.

As shown in fig. 7, the terminal device comprises a processor 701 and a transceiver 702. Optionally, the terminal device further comprises a memory 703. Wherein the processor 701, the transceiver 702 and the memory 703 can communicate with each other via an internal connection path for transferring control and/or data signals, the memory 703 is used for storing a computer program, and the processor 701 is used for calling and running the computer program from the memory 703 for controlling the transceiver 702 to send and receive signals. Optionally, the terminal device may further include an antenna, for sending the uplink data or the uplink control signaling output by the transceiver 702 through a wireless signal.

The processor 701 and the memory 703 may be combined into a single processing device, and the processor 701 is configured to execute the program code stored in the memory 703 to implement the functions. In particular, the memory 703 may also be integrated into the processor 701 or may be separate from the processor 701.

The transceiver 702 may correspond to the receiving module and the transmitting module in fig. 5, and may also be referred to as a transceiver unit or a transceiver module. The transceiver 702 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.

It will be appreciated that the terminal device shown in fig. 7 is capable of carrying out the various processes involving the terminal device in the method embodiment shown in fig. 2. The operations and/or functions of the respective modules in the terminal device are respectively for implementing the corresponding flows in the above method embodiments. Reference is specifically made to the description of the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid redundancy.

The above-described processor 701 may be used to perform the actions described in the previous method embodiments as being performed internally by the terminal device, while the transceiver 702 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the network device by the terminal device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

The processor 701 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor 701 may also be a combination that performs computing functions, such as including one or more microprocessors, digital signal processors and microprocessors, and the like. Communication bus 704 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus, or the like. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 7, but not only one bus or one type of bus. Communication bus 704 is used to enable connected communications between these components. The transceiver 702 in the embodiment of the present application is configured to perform signaling or data communication with other node devices. The memory 703 may include volatile memory such as nonvolatile dynamic random access memory (nonvolatile random access memory, NVRAM), phase change RAM (PRAM), magnetoresistive RAM (MRAM), etc., and may also include nonvolatile memory such as at least one magnetic disk storage device, electrically erasable programmable read only memory (electrically erasable programmable read-only memory, EEPROM), flash memory device such as flash memory (NOR flash memory) or flash memory (NAND flash memory), semiconductor device such as Solid State Disk (SSD), etc. The memory 703 may optionally also be at least one storage device located remotely from the aforementioned processor 701. Optionally, a set of computer program code or configuration information may also be stored in the memory 703. Optionally, the processor 701 may also execute a program stored in the memory 703. The processor may cooperate with the memory and the transceiver to perform any of the methods and functions of the terminal device in the embodiments of the application described above.

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device may be applied to the system shown in fig. 1, to perform the functions of the network device in the above method embodiment, or to implement the steps or flows performed by the network device in the above method embodiment.

As shown in fig. 8, the network device includes a processor 801 and a transceiver 802. Optionally, the network device further comprises a memory 803. Wherein the processor 801, the transceiver 802 and the memory 803 can communicate with each other via an internal connection path to transfer control and/or data signals, the memory 803 is used for storing a computer program, and the processor 801 is used for calling and running the computer program from the memory 803 to control the transceiver 802 to send and receive signals. Optionally, the network device may further include an antenna for sending uplink data or uplink control signaling output by the transceiver 802 through a wireless signal.

The processor 801 and the memory 803 may be combined into one processing device, and the processor 801 is configured to execute program codes stored in the memory 803 to realize the functions. In particular implementations, the memory 803 may also be integrated into the processor 801 or separate from the processor 801.

The transceiver 802 may correspond to the receiving module and the transmitting module in fig. 6, and may also be referred to as a transceiver unit or a transceiver module. The transceiver 802 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.

It should be understood that the network device shown in fig. 8 is capable of implementing the various processes involving the network device in the method embodiment shown in fig. 2. The operations and/or functions of the respective modules in the network device are respectively for implementing the corresponding flows in the above-mentioned method embodiments. Reference is specifically made to the description of the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid redundancy.

The above-described processor 801 may be used to perform the actions described in the previous method embodiments as being performed internally by the network device, while the transceiver 802 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the terminal device by the network device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

Among them, the processor 801 may be various types of processors mentioned above. The communication bus 804 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus or the like. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 8, but not only one bus or one type of bus. The communication bus 804 is used to enable connected communications between these components. The transceiver 802 of the device in the embodiment of the present application is used to perform signaling or data communication with other devices. The memory 803 may be various types of memories mentioned previously. The memory 803 may optionally be at least one memory device located remotely from the processor 801. A set of computer program code or configuration information is stored in the memory 803, and the processor 801 executes the programs in the memory 803. The processor may cooperate with the memory and the transceiver to perform any of the methods and functions of the network device in the embodiments of the application described above.

The embodiment of the application also provides a chip system, which comprises a processor, and is used for supporting a terminal device or a network device to realize the functions related to any embodiment, such as generating or processing SDT data related to the method. In one possible design, the chip system may further include a memory for program instructions and data necessary for the terminal device or the network device. The chip system can be composed of chips, and can also comprise chips and other discrete devices. The input and output of the chip system correspond to the receiving and sending operations of the terminal device or the network device in the method embodiment respectively.

The embodiment of the application also provides a processing device, which comprises a processor and an interface. The processor may be used to perform the methods of the method embodiments described above.

It should be understood that the processing means may be a chip. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

According to the method provided by the embodiment of the application, the application further provides a computer program product, which comprises: a computer program which, when run on a computer, causes the computer to perform the method of any of the embodiments shown in fig. 2.

According to the method provided in the embodiments of the present application, there is further provided a computer readable medium storing a computer program, which when run on a computer causes the computer to perform the method of any one of the embodiments shown in fig. 2.

According to the method provided by the embodiment of the application, the application further provides a communication system, which comprises the one or more terminal devices and the one or more network devices.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The network device in the above-mentioned respective apparatus embodiments corresponds to the network device or the terminal device in the terminal device and method embodiments, the respective steps are performed by respective modules or units, for example, the receiving module and the transmitting module (transceiver) perform the steps of receiving or transmitting in the method embodiments, and other steps except for transmitting and receiving may be performed by the processing module (processor). Reference may be made to corresponding method embodiments for the function of a particular module. Wherein the processor may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software 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.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, the method comprising:

the method comprises the steps that terminal equipment obtains first configuration information, wherein the first configuration information is used for indicating that coherence on at least one carrier is allowed to be indicated through downlink control information DCI or a media access control unit (MAC CE);

the terminal device receives the DCI or the MAC CE from the network device, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs.

2. The method of claim 1, wherein the method further comprises:

the terminal equipment sends a plurality of groups of parameters corresponding to a first frequency band combination to the network equipment, wherein each group of parameters comprises coherence capability of each frequency band in the first frequency band combination supported by the terminal equipment, and the coherence capability of at least one frequency band in at least two groups of parameters corresponding to the first frequency band combination is different.

3. The method of claim 2, wherein a highest coherence capability of at least two frequency bands in the first combination of frequency bands is located in two different sets of parameters in the plurality of sets of parameters.

4. The method of claim 1, wherein the method further comprises:

the terminal equipment sends at least one group of parameters corresponding to a first frequency band combination to the network equipment, wherein the at least one group of parameters comprise coherence capability of at least two frequency bands in the first frequency band combination supported by the terminal equipment, and coherence on the at least two frequency bands cannot be the coherence capability indicated by the at least one group of parameters at the same time.

5. The method of any one of claims 1-4, wherein the method further comprises:

the terminal equipment sends second indication information to the network equipment, wherein the second indication information is used for indicating the terminal equipment to support switching of the coherence of the frequency band to which the at least one carrier belongs.

6. The method of any one of claims 1-5, wherein the method further comprises:

the terminal equipment receives second configuration information from the network equipment, wherein the second configuration information is used for configuring the coherence of at least two carriers, the at least two carriers comprise the at least one carrier, and the coherence of the at least two carriers is the highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

7. The method of any of claims 1-6, wherein the first indication information carries a column in a most significant bit, or time domain resource allocation cell, in the indication field in the DCI.

8. The method of any one of claims 1-6, wherein the first indication information is indicated by a transmission precoding matrix in the DCI indicating a range of values indicated by a TPMI field or precoding information and a range of values indicated by a layer number field.

9. The method of any of claims 1-8, wherein after the terminal device receives DCI or MAC CE from the network device, further comprising:

and when the current coherence of the at least one carrier is smaller than the coherence of the at least one carrier indicated by the first indication information, the terminal equipment sends uplink data to the network equipment on the at least one carrier after at least a first duration, wherein the first duration is a duration of switching the carrier, a duration of switching the coherence, a greater value of the duration of switching the carrier and the duration of switching the coherence, or a predefined duration.

10. A method of communication, the method comprising:

The network equipment sends first configuration information to the terminal equipment, wherein the first configuration information is used for indicating the coherence of at least one carrier wave through downlink control information DCI or a media access control unit (MAC CE);

the network device sends the DCI or the MAC CE to the terminal device, where the DCI or the MAC CE includes first indication information, where the first indication information is used to indicate coherence of the at least one carrier, and the coherence of the at least one carrier does not exceed coherence capability supported by a frequency band to which the at least one carrier belongs.

11. The method of claim 10, wherein the method further comprises:

the network device receives a plurality of groups of parameters corresponding to a first frequency band combination from the terminal device, wherein each group of parameters comprises coherence capability of each frequency band in the first frequency band combination supported by the terminal device, and the coherence capability of at least one frequency band in at least two groups of parameters corresponding to the first frequency band combination is different.

12. The method of claim 11, wherein a highest coherence capability of at least two frequency bands in the first combination of frequency bands is located in two different sets of parameters in the plurality of sets of parameters.

13. The method of claim 10, wherein the method further comprises:

the network device receives at least one group of parameters corresponding to a first frequency band combination from the terminal device, wherein the at least one group of parameters comprise coherence capability of at least two frequency bands in the first frequency band combination supported by the terminal device, and coherence on the at least two frequency bands cannot be the coherence capability indicated by the at least one group of parameters at the same time.

14. The method of any one of claims 10-13, wherein the method further comprises:

the network device receives second indication information from the terminal device, where the second indication information is used to indicate that the terminal device supports switching of coherence of a frequency band to which the at least one carrier belongs.

15. The method of any one of claims 10-14, wherein the method further comprises:

the network device sends second configuration information to the terminal device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

16. The method of any of claims 10-15, wherein the first indication information carries a column in a most significant bit in an indication field or a time domain resource allocation cell in the DCI.

17. The method of any of claims 10-15, wherein the first indication information is indicated by a transmit precoding matrix in the DCI indicating a range of values indicated by a TPMI field or precoding information and a range of values indicated by a layer number field.

18. The method of any one of claims 10-17, wherein after the network device transmits the DCI or the MAC CE to the terminal device, further comprising:

and when the current coherence of the at least one carrier is smaller than the coherence of the at least one carrier indicated by the first indication information, the network equipment receives uplink data sent by the terminal equipment on the at least one carrier after at least a first time period, wherein the first time period is a time period for switching the carrier, a time period for switching the coherence, a larger value of the time period for switching the carrier and the time period for switching the coherence, or a predefined time period.

19. A communication device, the device comprising:

20. The apparatus of claim 19, wherein the apparatus further comprises:

21. The apparatus of claim 20, wherein highest coherence capability of at least two frequency bands in the first combination of frequency bands is located in two different sets of parameters in the plurality of sets of parameters.

22. The apparatus of claim 19, wherein the apparatus further comprises:

23. The apparatus of any one of claims 20-22,

the sending module is further configured to send second indication information to the network device, where the second indication information is used to indicate that the terminal device supports switching of coherence of a frequency band to which the at least one carrier belongs.

24. The apparatus of any one of claims 19-23, wherein,

the receiving module is further configured to receive second configuration information from the network device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

25. The apparatus of any one of claims 19-24, wherein the first indication information carries a most significant bit in an indication field or a column of time domain resource allocation cells in the DCI.

26. The apparatus of any one of claims 19-24, wherein the first indication information indicates a range of values indicated by a TPMI field or a range of values of precoding information and a layer number field indicated by a transmit precoding matrix in the DCI.

27. The apparatus of any one of claims 19-26, wherein the apparatus further comprises:

and the sending module is used for sending uplink data to the network equipment on the at least one carrier after at least a first duration is passed when the current coherence of the at least one carrier is smaller than the coherence of the at least one carrier indicated by the first indication information, wherein the first duration is a duration of switching the carrier, a duration of switching the coherence, a greater value of the duration of switching the carrier and the duration of switching the coherence, or a predefined duration.

28. A communication device, the device comprising:

29. The apparatus of claim 28, wherein the apparatus further comprises:

30. The apparatus of claim 29, wherein a highest coherence capability of at least two frequency bands in the first combination of frequency bands is located in two different sets of parameters in the plurality of sets of parameters.

31. The apparatus of claim 28, wherein the apparatus further comprises:

32. The apparatus of any one of claims 28-31,

the receiving module is further configured to receive second indication information from the terminal device, where the second indication information is used to indicate that the terminal device supports switching of a coherence of a frequency band to which the at least one carrier belongs.

33. The apparatus of any one of claims 28 to 32,

the sending module is further configured to send second configuration information to the terminal device, where the second configuration information is used to configure coherence of at least two carriers, where the at least two carriers include the at least one carrier, and the coherence of the at least two carriers is highest coherence of at least two frequency bands in a frequency band combination to which the at least two carriers belong.

34. The apparatus of any one of claims 28-33, wherein the first indication information carries a most significant bit in an indication field or a column of time domain resource allocation cells in the DCI.

35. The apparatus of any one of claims 28-33, wherein the first indication information is indicated by a transmit precoding matrix in the DCI indicating a range of values indicated by a TPMI field or precoding information and a range of values indicated by a layer number field.

36. The apparatus of any one of claims 28-35, wherein the apparatus further comprises:

37. A communication device comprising a processor and a memory for storing a computer program, the processor running the computer program to cause the device to perform the method of any one of claims 1-9 or any one of claims 10-18.

38. A chip, characterized in that the chip is a chip in a terminal device and a network device, the chip comprising a processor and an input interface and an output interface connected to the processor, the chip further comprising a memory, in which memory a computer program is executed, the method of any of claims 1-9 or any of claims 10-18 being executed.

39. A computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1-9 or any one of claims 10-18.

40. A computer program product, characterized in that the computer program product comprises a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1-9 or any one of claims 10-18.

41. A communication system, characterized in that the system comprises a terminal device performing the method of any of claims 1-9 and a network device performing the method of any of claims 10-18.