Communication method and device

Abstract

The invention discloses a communication method and device, relates to the field of communication, and can enable the scheduling of a polarization mode to be more flexible and improve the spectrum efficiency. The communication method comprises the steps that the second communication device determines first indication information and sends the first indication information. Wherein the first indication information is carried on the terminal level information, the first indication information is used for indicating a first polarization mode of the first communication device, and the first polarization mode comprises any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross polarization multiplexing. Thus, the second communication device can schedule the polarization mode of the first communication device at the terminal level, that is, the second communication device can adjust the polarization mode of a certain first communication device, so that the polarization mode scheduling of the first communication device is more flexible, and the scheduling granularity is finer. And the spectrum efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a communication method and device. Background Art

[0002] When electromagnetic waves propagate in space, if the direction of the electric field vector remains fixed or rotates according to a certain rule, this electromagnetic wave is called a polarized electromagnetic wave. Among them, if the direction of the electric field vector of the electromagnetic wave remains perpendicular to the horizontal plane, it is called a vertically polarized electromagnetic wave, and if the direction of the electric field vector of the electromagnetic wave remains parallel to the horizontal plane, it is called a horizontally polarized electromagnetic wave. If the point vector of the electromagnetic wave changes to form a circle, it is called a circularly polarized electromagnetic wave. Figure 1 As shown, according to the rotation direction of the circle formed by the point vector change of the electromagnetic wave, the circularly polarized electromagnetic wave can be divided into left-hand circularly polarized (LHCP) electromagnetic wave and right-hand circularly polarized (RHCP) electromagnetic wave.

[0003] In a communication system, two devices can communicate in different polarization modes according to the polarization direction of the electromagnetic waves transmitted between the devices. For example, a network device and a terminal device can communicate based on a vertical polarization mode, which specifically means that the electromagnetic waves transmitted between the network device and the terminal device are vertically polarized electromagnetic waves.

[0004] Currently, when network equipment schedules the polarization mode of terminal equipment in a cell, there are still problems of inflexible scheduling and low spectrum efficiency. Therefore, the scheduling process of the polarization mode of terminal equipment needs to be optimized. Summary of the invention

[0005] The present application provides a communication method and device, which can make the scheduling of polarization modes more flexible and improve spectrum efficiency.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a communication method, which can be applied to a second communication device, where the second communication device can be, for example, a network device, such as an access network device (such as a base station, a satellite, etc.). The communication method includes: the second communication device determines first indication information, and sends the first indication information. The first indication information is carried in terminal-level information, and the first indication information is used to indicate a first polarization mode of the first communication device, and the first polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0008] In combination with the communication method described in the first aspect, it can be known that the first indication information can schedule the polarization mode of the first communication device, and it is carried by terminal level information, such as radio resource control (RRC) signaling, downlink control information (DCI), etc. In this way, the second communication device can schedule the polarization mode of the first communication device at the terminal level, that is, the second communication device can adjust the polarization mode of a certain first communication device, so that the scheduling of the polarization mode of the first communication device is more flexible and the scheduling granularity is finer, thereby improving the spectrum efficiency.

[0009] Among them, terminal level information can also be called terminal level signaling, or user equipment (UE) specific (UE specific) signaling, or UE level information and other similar concepts, which are not limited in the embodiments of the present application.

[0010] In a possible implementation, the communication method described in the first aspect may further include: the second communication device determines the second indication information, and sends the second indication information. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more. In this way, through the second indication information, the first communication device can obtain the polarization mode of the neighboring cell in advance, that is, it can obtain the polarization mode used for measuring the signal quality of the neighboring cell in advance, so that when the cell is switched, the first communication device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell switching, which can improve the success rate of cell switching, avoid requesting the polarization mode of the neighboring cell from the second communication device again during switching, and speed up the cell switching speed.

[0011] Among them, linear polarization may include: any one of horizontal polarization, vertical polarization, +45° polarization, and -45° polarization; cross-polarization multiplexing may include: any one of horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, and left-hand right-hand circular polarization cross-polarization multiplexing (LHCP&RHCP Multiplexing). In other words, the first polarization mode may include: any one of left-hand circular polarization, right-hand circular polarization, horizontal polarization, vertical polarization, +45° polarization, -45° polarization, horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, and left-hand right-hand circular polarization cross-polarization multiplexing. In addition, the elements included in the polarization mode of the neighboring cell indicated by the second indication information are the same as the first polarization mode, which will not be repeated here.

[0012] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the first state is located. The first state may include a connected state (connected) or an inactive state (inactive), and the second indication information is carried in the terminal level information. In this way, through the second indication information, the first communication device in the connected state or the inactive state can obtain the polarization mode of the neighboring cell in advance, that is, it can obtain the polarization mode used for measuring the signal quality of the neighboring cell in advance, so that when the cell is switched, the first communication device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell switching, which can improve the success rate of cell switching, avoid requesting the polarization mode of the neighboring cell from the second communication device again during switching, and speed up the cell switching speed.

[0013] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the second state is located. The second state may include an inactive state or an idle state (idle), and the second indication information is carried in the cell-level information. In this way, through the second indication information, the first communication device in the inactive state or the idle state can obtain the polarization mode of the neighboring cell in advance, that is, it can obtain the polarization mode used when measuring the signal quality of the neighboring cell in advance, so that when performing cell reselection, the first communication device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell reselection, which can improve the success rate of cell reselection, avoid requesting the polarization mode of the neighboring cell from the second communication device again during reselection, and speed up the cell reselection. Optionally, the cell-level information can be a system broadcast message (system information block, SIB).

[0014] In a possible implementation, the first indication information may include a mapping relationship between the indexes of multiple synchronization signals and physical broadcast channel blocks (synchronization signal and PBCH block, SSB) and multiple polarization modes. In other words, the second communication device may configure the corresponding relationship between the index of the SSB and the polarization mode for the first communication device in advance, so that the second communication device may also implicitly indicate the polarization mode of the first communication device through the index of the SSB, thereby further simplifying the complexity of the second communication device indicating the polarization mode of the first communication device.

[0015] In a possible implementation, the first indication information is also used to indicate the duration of the first polarization mode. In other words, the second communication device can indicate the duration of the first communication device working in the first polarization mode, and after the duration indicated by the first indication information expires, the first communication device can be restored to the previous polarization mode. In this way, the second communication device does not need to instruct the first communication device to restore to the previous polarization mode through an indication signaling, which can save signaling overhead and avoid the second communication device waiting for a long time for the first communication device to feedback the indication signaling. In addition, the flexibility of scheduling the polarization mode of the first communication device can be further improved.

[0016] In a possible implementation, the first indication information is determined based on one or more of the following: polarization modes supported by the first communication device, channel state information (CSI) of channels of different polarization modes measured by the first communication device, service requirements of the first communication device, polarization mode expected by the first communication device, weather conditions between the first communication device and the second communication device, and crosstalk between orthogonal polarization channels. In this way, the second communication device can determine a polarization mode that is more suitable for the first communication device based on a variety of information, and schedule the polarization mode for the first communication device through the first indication information. On the one hand, the first communication device can work in a better polarization mode, thereby improving communication quality and reducing power consumption. On the other hand, the scheduling of the polarization mode of the first communication device can be made more flexible and the scheduling granularity can be finer, thereby improving spectrum efficiency.

[0017] In a possible implementation manner, the terminal level information may be RRC signaling.

[0018] Optionally, the terminal level information may also be any one of a media access control layer control element (MAC CE), a channel state information reference signal (CSI-RS), a DCI, etc.

[0019] In a possible implementation, the first indication information may be one or more of a carrier frequency and a resource element (RE) of the CSI-RS, and one or more of the carrier frequency and the resource element are used to indicate the first polarization mode. The carrier frequency may also be understood as a carrier wave, which is not limited thereto.

[0020] In a possible implementation, the communication method described in the first aspect may further include: the second communication device determines third indication information, and sends the third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more. In this way, through the third indication information, the first communication device can obtain the polarization mode of the adjacent beam in advance, that is, it can obtain the polarization mode used for measuring the signal quality of the adjacent beam in advance, so that when the beam is switched, the first communication device can measure the signal quality of the adjacent beam based on the polarization mode of the adjacent beam indicated by the third indication information to achieve beam switching, which can improve the success rate of beam switching, avoid requesting the polarization mode of the adjacent beam from the second communication device again when switching, and speed up the beam switching speed.

[0021] In a possible implementation, the first indication information is used to indicate a first polarization mode of a first resource of a first communication device, and the first resource includes a time-frequency domain resource. In this way, resource units with different polarization modes but the same time-frequency resources can be allocated to different first communication devices, which can avoid interference between communication devices, improve resource utilization, thereby improving communication efficiency, and improve the flexibility of resource scheduling.

[0022] In a second aspect, the present application provides a communication method, which can be applied to a first communication device, where the first communication device can be, for example, a terminal device, such as a mobile phone, a car, an Internet of Things (IoT) device, etc. The communication method includes: the first communication device receives first indication information of the second communication device. The first indication information is used to indicate a first polarization mode of the first communication device, and the first polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing, and the first indication information is carried in terminal level information. The first communication device communicates with the second communication device based on the first polarization mode.

[0023] In a possible implementation, the communication method described in the second aspect may further include: the first communication device receives second indication information of the second communication device. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0024] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0025] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the second state is located, the second state may include an inactive state or an idle state, and the second indication information is carried in the cell level information. Optionally, the cell level information may be SIB.

[0026] In a possible implementation, the first indication information may include a mapping relationship between indexes of multiple SSBs and multiple polarization modes.

[0027] In a possible implementation manner, the first indication information is further used to indicate a duration of the first polarization mode.

[0028] In one possible implementation, the first indication information is determined based on one or more of the following: polarization modes supported by the first communication device, channel state information of channels of different polarization modes measured by the first communication device, service requirements of the first communication device, polarization mode expected by the first communication device, weather conditions between the first communication device and the second communication device, and crosstalk conditions between orthogonal polarization channels.

[0029] In a possible implementation manner, the terminal level information may be RRC signaling.

[0030] Optionally, the terminal level information may also be any one of MAC CE, CSI-RS, DCI, etc.

[0031] In a possible implementation, the communication method described in the second aspect may further include: the first communication device receives third indication information from the second communication device. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0032] In a possible implementation manner, the first indication information is used to indicate a first polarization mode of a first resource of the first communication device, where the first resource includes a time-frequency domain resource.

[0033] It should be noted that the technical effects of the communication method described in the second aspect can refer to the technical effects of the communication method described in the first aspect, and will not be repeated here.

[0034] In a third aspect, the present application provides a communication method, which can be applied to a second communication device, and the second communication device can be, for example, an access network device (such as a base station). The communication method includes: the second communication device determines fourth indication information, and sends the fourth indication information. The fourth indication information is used to indicate a second polarization mode of the first beam, and the second polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0035] In combination with the communication method described in the third aspect, it can be known that the fourth indication information can indicate the second polarization mode of the first beam, so that the second communication device can schedule the polarization mode of the first communication device at the beam level, that is, the second communication device can adjust the polarization mode of the first communication device within a certain beam, so that the polarization mode scheduling of the first communication device is more flexible and the scheduling granularity is finer, thereby improving the spectrum efficiency.

[0036] In a possible implementation, the fourth indication information includes an index of an SSB, and the index of the SSB corresponds to the second polarization mode; or, the fourth indication information includes a time-frequency position of a CSI-RS, and the time-frequency position of the CSI-RS corresponds to the second polarization mode.

[0037] In a possible implementation, the communication method described in the third aspect may further include: the second communication device sends a first mapping relationship. The first mapping relationship includes a mapping relationship between an index of at least one SSB and at least one polarization mode; or, the first mapping relationship includes a mapping relationship between a time-frequency position of at least one CSI-RS and at least one polarization mode.

[0038] In a possible implementation manner, the fourth indication information is carried in any one of RRC, DCI or MAC CE.

[0039] In a possible implementation, the communication method described in the third aspect may further include: the second communication device determines the second indication information, and sends the second indication information. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more. In this way, through the second indication information, the first communication device can obtain the polarization mode of the neighboring cell in advance, that is, it can obtain the polarization mode used for measuring the signal quality of the neighboring cell in advance, so that when the cell is switched, the first communication device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell switching, which can improve the success rate of cell switching, avoid requesting the polarization mode of the neighboring cell from the second communication device again during switching, and speed up the cell switching speed.

[0040] Among them, linear polarization may include: any one of horizontal polarization, vertical polarization, +45° polarization, and -45° polarization; cross-polarization multiplexing may include: any one of horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, and left-hand right-hand circular polarization cross-polarization multiplexing. In other words, the second polarization mode may include: any one of left-hand circular polarization, right-hand circular polarization, horizontal polarization, vertical polarization, +45° polarization, -45° polarization, horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, and left-hand right-hand circular polarization cross-polarization multiplexing. In addition, the elements included in the polarization mode of the neighboring cell indicated by the second indication information are the same as the second polarization mode, which will not be repeated here.

[0041] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the first state is located. The first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information. In this way, through the second indication information, the first communication device in the connected state or the inactive state can obtain the polarization mode of the neighboring cell in advance, that is, it can obtain the polarization mode used for measuring the signal quality of the neighboring cell in advance, so that when the cell is switched, the first communication device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell switching, which can improve the success rate of cell switching, avoid requesting the polarization mode of the neighboring cell from the second communication device again during switching, and speed up the cell switching speed.

[0042] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the second state is located. The second state may include an inactive state or an idle state, and the second indication information is carried in the cell-level information. In this way, through the second indication information, the first communication device in the inactive state or the idle state can obtain the polarization mode of the neighboring cell in advance, that is, it can obtain the polarization mode used when measuring the signal quality of the neighboring cell in advance, so that when performing cell reselection, the first communication device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell reselection, which can improve the success rate of cell reselection, avoid requesting the polarization mode of the neighboring cell from the second communication device again during reselection, and speed up the cell reselection.

[0043] In a possible implementation, the fourth indication information is also used to indicate the duration of the second polarization mode. In other words, the second communication device can indicate the duration of all first communication devices in the first beam working in the second polarization mode, and after the duration indicated by the fourth indication information expires, all first communication devices in the first beam can be restored to the previous polarization mode. In this way, the second communication device does not need to instruct the first communication device in the first beam to restore to the previous polarization mode through an indication signaling, which can save signaling overhead. In addition, the flexibility of scheduling the polarization mode of the first communication device can be further improved.

[0044] In a possible implementation, the fourth indication information is determined based on one or more of the following: the polarization modes supported by all first communication devices in the first beam, the channel state information of channels of different polarization modes measured by all first communication devices in the first beam, the service requirements of all first communication devices in the first beam, the polarization modes expected by all first communication devices in the first beam, the weather conditions within the coverage of the first beam, and the crosstalk between all orthogonal polarization channels in the first beam. In this way, the second communication device can determine a polarization mode that is more suitable for all first communication devices in the first beam based on a variety of information, and schedule the polarization mode for all first communication devices in the first beam through the fourth indication information. On the one hand, all first communication devices in the first beam can work under a better polarization mode, thereby improving communication quality and reducing power consumption. On the other hand, the scheduling of the polarization mode of all first communication devices in the first beam can be more flexible and the scheduling granularity can be finer, thereby improving spectrum efficiency.

[0045] In a possible implementation, the communication method described in the third aspect may further include: the second communication device determines the third indication information, and sends the third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more. In this way, through the third indication information, the first communication device can obtain the polarization mode of the adjacent beam in advance, that is, it can obtain the polarization mode used for measuring the signal quality of the adjacent beam in advance, so that when the beam is switched, the first communication device can measure the signal quality of the adjacent beam based on the polarization mode of the adjacent beam indicated by the third indication information to achieve beam switching, which can improve the success rate of beam switching, avoid requesting the polarization mode of the adjacent beam from the second communication device again when switching, and speed up the beam switching speed.

[0046] In a fourth aspect, the present application provides a communication method, which can be applied to a first communication device, and the first communication device can be, for example, a mobile phone, a car, an Internet of Things device, etc. The communication method includes: the first communication device receives fourth indication information of a second communication device. The fourth indication information is used to indicate a second polarization mode of the first beam, and the second polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing. Communicate with the second communication device based on the second polarization mode.

[0047] In a possible implementation, the fourth indication information includes an index of an SSB, and the index of the SSB corresponds to the second polarization mode; or, the fourth indication information includes a time-frequency position of a CSI-RS, and the time-frequency position of the CSI-RS corresponds to the second polarization mode.

[0048] In a possible implementation, the communication method described in the fourth aspect may further include: the first communication device receives a first mapping relationship from the second communication device. The first mapping relationship includes a mapping relationship between an index of at least one SSB and at least one polarization mode; or, the first mapping relationship includes a mapping relationship between a time-frequency position of at least one CSI-RS and at least one polarization mode.

[0049] In a possible implementation manner, the fourth indication information is carried in any one of RRC, DCI or MAC CE.

[0050] In a possible implementation, the communication method described in the fourth aspect may further include: the first communication device receives second indication information of the second communication device. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0051] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0052] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the second state is located. The second state may include an inactive state or an idle state. The second indication information is carried in the cell-level information.

[0053] In a possible implementation manner, the fourth indication information is further used to indicate a duration of the second polarization mode.

[0054] In one possible implementation, the fourth indication information is determined based on one or more of the following: polarization modes supported by all first communication devices in the first beam, channel state information of channels of different polarization modes measured by all first communication devices in the first beam, service requirements of all first communication devices in the first beam, expected polarization modes of all first communication devices in the first beam, weather conditions within the coverage area of ​​the first beam, and crosstalk conditions between all orthogonal polarization channels in the first beam.

[0055] In a possible implementation, the communication method described in the fourth aspect may further include: the first communication device receives third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing. One or more.

[0056] It should be noted that the technical effects of the communication method described in the fourth aspect can refer to the technical effects of the communication method described in the third aspect, and will not be repeated here.

[0057] In a fifth aspect, a second communication device is provided. The second communication device includes: a processing module and a transceiver module. The processing module is used to determine first indication information. The first indication information is carried in terminal level information, and the first indication information is used to indicate a first polarization mode of the first communication device, and the first polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing. The transceiver module is used to send the first indication information.

[0058] In some possible designs, the processing module is further used to determine the second indication information. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more of the transceiver module is also used to send the second indication information.

[0059] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0060] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the second state is located, the second state may include an inactive state or an idle state, and the second indication information is carried in the cell level information. Optionally, the cell level information may be SIB.

[0061] In a possible implementation, the first indication information may include a mapping relationship between indexes of multiple SSBs and multiple polarization modes.

[0062] In a possible implementation manner, the first indication information is further used to indicate a duration of the first polarization mode.

[0063] In one possible implementation, the first indication information is determined based on one or more of the following: polarization modes supported by the first communication device, CSI of channels of different polarization modes measured by the first communication device, service requirements of the first communication device, polarization mode expected by the first communication device, weather conditions between the first communication device and the second communication device, and crosstalk conditions between orthogonal polarization channels.

[0064] In a possible implementation manner, the terminal level information may be RRC signaling.

[0065] Optionally, the terminal level information may also be any one of MAC CE, CSI-RS, DCI, etc.

[0066] In a possible implementation manner, the first indication information may be one or more of a carrier frequency and RE of a CSI-RS, and one or more of the carrier frequency and resource units are used to indicate the first polarization mode.

[0067] In a possible implementation, the processing module is further used to determine third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The transceiver module is also used to send the third indication information.

[0068] In a possible implementation manner, the first indication information is used to indicate a first polarization mode of a first resource of the first communication device, where the first resource includes a time-frequency domain resource.

[0069] Optionally, the transceiver module may include a receiving module and a sending module, wherein the receiving module is used to implement the receiving function of the second communication device described in the fifth aspect, and the sending module is used to implement the sending function of the second communication device described in the fifth aspect.

[0070] Optionally, the second communication device described in the fifth aspect may further include a storage module, wherein the storage module stores a program or an instruction. When the processing module executes the program or the instruction, the second communication device may execute the communication method described in the first aspect.

[0071] It should be noted that the second communication device described in the fifth aspect may be a network device, which may be, for example, an access network device (such as a base station, satellite, etc.), or a chip (system) or other parts or components arranged in the network device, or a second communication device including a network device, which is not limited in this application.

[0072] In addition, the technical effects of the second communication device described in the fifth aspect can refer to the technical effects of the communication method described in the first aspect, and will not be repeated here.

[0073] In a sixth aspect, a first communication device is provided. The first communication device includes: a transceiver module and a processing module. The transceiver module is used to receive first indication information of a second communication device. The first indication information is used to indicate a first polarization mode of the first communication device, and the first polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing, and the first indication information is carried in terminal level information. The processing module is used to communicate with the second communication device based on the first polarization mode.

[0074] In a possible implementation, the transceiver module is further used to receive second indication information of the second communication device. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0075] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0076] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the second state is located, the second state may include an inactive state or an idle state, and the second indication information is carried in the cell level information. Optionally, the cell level information may be SIB.

[0077] In a possible implementation, the first indication information may include a mapping relationship between indexes of multiple SSBs and multiple polarization modes.

[0078] In a possible implementation manner, the first indication information is further used to indicate a duration of the first polarization mode.

[0079] In one possible implementation, the first indication information is determined based on one or more of the following: polarization modes supported by the first communication device, channel state information of channels of different polarization modes measured by the first communication device, service requirements of the first communication device, polarization mode expected by the first communication device, weather conditions between the first communication device and the second communication device, and crosstalk conditions between orthogonal polarization channels.

[0080] In a possible implementation manner, the terminal level information may be RRC signaling.

[0081] Optionally, the terminal level information may also be any one of MAC CE, CSI-RS, DCI, etc.

[0082] In a possible implementation, the transceiver module is further used to receive third indication information of the second communication device. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0083] In a possible implementation manner, the first indication information is used to indicate a first polarization mode of a first resource of the first communication device, where the first resource includes a time-frequency domain resource.

[0084] Optionally, the transceiver module may include a receiving module and a sending module, wherein the receiving module is used to implement the receiving function of the first communication device described in the sixth aspect, and the sending module is used to implement the sending function of the first communication device described in the sixth aspect.

[0085] Optionally, the first communication device described in the sixth aspect may further include a storage module, wherein the storage module stores a program or an instruction. When the processing module executes the program or the instruction, the first communication device may execute the communication method described in the second aspect.

[0086] It should be noted that the first communication device described in the sixth aspect can be a terminal device, and the terminal device can be, for example, a mobile phone, a car, an Internet of Things device, etc., or it can be a chip (system) or other parts or components set in the terminal device, or it can be a first communication device including a terminal device, and this application does not limit this.

[0087] In addition, the technical effects of the first communication device described in the sixth aspect can refer to the technical effects of the communication method described in the second aspect, and will not be repeated here.

[0088] In a seventh aspect, a second communication device is provided. The second communication device includes: a processing module and a transceiver module. The processing module is used to determine fourth indication information. The fourth indication information is used to indicate a second polarization mode of the first beam, and the second polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The transceiver module is used to send the fourth indication information.

[0089] In a possible implementation, the fourth indication information includes an index of an SSB, and the index of the SSB corresponds to the second polarization mode; or, the fourth indication information includes a time-frequency position of a CSI-RS, and the time-frequency position of the CSI-RS corresponds to the second polarization mode.

[0090] In a possible implementation, the transceiver module is further used to send a first mapping relationship. The first mapping relationship includes a mapping relationship between an index of at least one SSB and at least one polarization mode; or, the first mapping relationship includes a mapping relationship between a time-frequency position of at least one CSI-RS and at least one polarization mode.

[0091] In a possible implementation manner, the fourth indication information is carried in any one of RRC, DCI or MAC CE.

[0092] In a possible implementation, the processing module is further used to determine second indication information. The second indication information is used to indicate the polarization mode of a neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing. The transceiver module is also used to send the second indication information.

[0093] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0094] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the second state is located. The second state may include an inactive state or an idle state. The second indication information is carried in the cell-level information.

[0095] In a possible implementation manner, the fourth indication information is further used to indicate a duration of the second polarization mode.

[0096] In one possible implementation, the fourth indication information is determined based on one or more of the following: polarization modes supported by all first communication devices in the first beam, channel state information of channels of different polarization modes measured by all first communication devices in the first beam, service requirements of all first communication devices in the first beam, expected polarization modes of all first communication devices in the first beam, weather conditions within the coverage area of ​​the first beam, and crosstalk conditions between all orthogonal polarization channels in the first beam.

[0097] In a possible implementation, the processing module is further used to determine third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The transceiver module is also used to send the third indication information.

[0098] Optionally, the transceiver module may include a receiving module and a sending module, wherein the receiving module is used to implement the receiving function of the second communication device described in the seventh aspect, and the sending module is used to implement the sending function of the second communication device described in the seventh aspect.

[0099] Optionally, the second communication device described in the seventh aspect may further include a storage module, wherein the storage module stores a program or an instruction. When the processing module executes the program or the instruction, the second communication device may execute the communication method described in the third aspect.

[0100] It should be noted that the second communication device described in the seventh aspect may be a network device, which may be, for example, an access network device (such as a base station, satellite, etc.), or a chip (system) or other parts or components arranged in the network device, or a second communication device including a network device, which is not limited in this application.

[0101] In addition, the technical effects of the second communication device described in the seventh aspect can refer to the technical effects of the communication method described in the third aspect, and will not be repeated here.

[0102] In an eighth aspect, a first communication device is provided. The first communication device includes: a transceiver module and a processing module. The transceiver module is used to receive fourth indication information of a second communication device. The fourth indication information is used to indicate a second polarization mode of the first beam, and the second polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The processing module is used to communicate with the second communication device based on the second polarization mode.

[0103] In a possible implementation, the fourth indication information includes an index of an SSB, and the index of the SSB corresponds to the second polarization mode; or, the fourth indication information includes a time-frequency position of a CSI-RS, and the time-frequency position of the CSI-RS corresponds to the second polarization mode.

[0104] In a possible implementation, the transceiver module is further used to receive second indication information of the second communication device. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0105] In a possible implementation manner, the fourth indication information is carried in any one of RRC, DCI or MAC CE.

[0106] In a possible implementation, the transceiver module is further used to receive second indication information of the second communication device. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0107] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0108] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the second state is located. The second state may include an inactive state or an idle state. The second indication information is carried in the cell-level information.

[0109] In a possible implementation manner, the fourth indication information is further used to indicate a duration of the second polarization mode.

[0110] In one possible implementation, the fourth indication information is determined based on one or more of the following: polarization modes supported by all first communication devices in the first beam, channel state information of channels of different polarization modes measured by all first communication devices in the first beam, service requirements of all first communication devices in the first beam, expected polarization modes of all first communication devices in the first beam, weather conditions within the coverage area of ​​the first beam, and crosstalk conditions between all orthogonal polarization channels in the first beam.

[0111] In a possible implementation, the transceiver module is further used to receive third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0112] Optionally, the transceiver module may include a receiving module and a sending module, wherein the receiving module is used to implement the receiving function of the first communication device described in the eighth aspect, and the sending module is used to implement the sending function of the first communication device described in the eighth aspect.

[0113] Optionally, the first communication device described in the eighth aspect may further include a storage module, wherein the storage module stores a program or an instruction. When the processing module executes the program or the instruction, the first communication device may execute the communication method described in the fourth aspect.

[0114] It should be noted that the first communication device described in the eighth aspect can be a terminal device, and the terminal device can be, for example, a mobile phone, a car, an Internet of Things device, etc., or it can be a chip (system) or other parts or components set in the terminal device, or it can be a first communication device including a terminal device, and this application does not limit this.

[0115] In addition, the technical effects of the first communication device described in the eighth aspect can refer to the technical effects of the communication method described in the fourth aspect, and will not be repeated here.

[0116] In a ninth aspect, a communication device is provided, which is used to execute the communication method described in any one of the implementation modes of the first aspect to the fourth aspect.

[0117] In the present application, the communication device described in the ninth aspect may be a terminal device or a network device, or a chip (system) or other components or assemblies provided in the terminal device or the network device, or a device including the terminal device or the network device, and the present application does not limit this. Among them, the network device is used to execute the communication method described in any possible implementation of the first aspect and the third aspect, and the terminal device is used to execute the communication method described in any possible implementation of the second aspect and the fourth aspect.

[0118] It should be understood that the communication device described in the ninth aspect includes a module, unit, or means corresponding to the communication method described in any one of the first to fourth aspects, and the module, unit, or means can be implemented by hardware, software, or by hardware executing the corresponding software. The hardware or software includes one or more modules or units for executing the functions involved in the above communication method.

[0119] In a tenth aspect, a communication device is provided, comprising: a processor, the processor being configured to execute the communication method described in any possible implementation manner in the first to fourth aspects.

[0120] In a possible design scheme, the communication device described in the tenth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the tenth aspect to communicate with other communication devices.

[0121] In a possible design scheme, the communication device described in the tenth aspect may also include a memory. The memory may be integrated with the processor or may be separately provided. The memory may be used to store the computer program and / or data involved in the communication method described in any one of the first aspect to the fourth aspect.

[0122] In the present application, the communication device described in the tenth aspect may be a terminal device or a network device, or a chip (system) or other components or assemblies provided in the terminal device or the network device, or a device including the terminal device or the network device, and the present application does not limit this. Among them, the network device is used to execute the communication method described in any possible implementation of the first aspect and the third aspect, and the terminal device is used to execute the communication method described in any possible implementation of the second aspect and the fourth aspect.

[0123] In an eleventh aspect, a communication device is provided, comprising: a processor coupled to a memory, the processor being configured to execute a computer program stored in the memory, so that the communication device executes the communication method described in any possible implementation manner in the first to fourth aspects.

[0124] In a possible design solution, the communication device described in the eleventh aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the eleventh aspect to communicate with other communication devices.

[0125] In the present application, the communication device described in the eleventh aspect may be a terminal device or a network device, or a chip (system) or other parts or components arranged in the terminal device or the network device, or a device including the terminal device or the network device, and the present application does not limit this. Among them, the network device is used to execute the communication method described in any possible implementation of the first aspect and the third aspect, and the terminal device is used to execute the communication method described in any possible implementation of the second aspect and the fourth aspect.

[0126] In a twelfth aspect, a communication device is provided. The communication device includes: a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the above code instructions to execute the communication method described in any one of the implementation modes of the first aspect to the fourth aspect.

[0127] In a possible design scheme, the communication device described in aspect 12 may further include a memory. The memory may be integrated with the processor or may be separately provided. The memory may be used to store the computer program and / or data involved in the communication method described in any one of aspects 1 to 4.

[0128] In the present application, the communication device described in the twelfth aspect may be a terminal device or a network device, or a chip (system) or other parts or components arranged in the terminal device or the network device, or a device including the terminal device or the network device, and the present application does not limit this. Among them, the network device is used to execute the communication method described in any possible implementation of the first aspect and the third aspect, and the terminal device is used to execute the communication method described in any possible implementation of the second aspect and the fourth aspect.

[0129] In a thirteenth aspect, a communication device is provided, which includes a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication method described in any possible implementation manner of the first to fourth aspects is implemented.

[0130] In the present application, the communication device described in the thirteenth aspect may be a terminal device or a network device, or a chip (system) or other parts or components arranged in the terminal device or the network device, or a device including the terminal device or the network device, and the present application does not limit this. Among them, the network device is used to execute the communication method described in any possible implementation of the first aspect and the third aspect, and the terminal device is used to execute the communication method described in any possible implementation of the second aspect and the fourth aspect.

[0131] In a fourteenth aspect, a processor is provided, wherein the processor is used to execute the communication method described in any possible implementation manner of the first aspect to the fourth aspect.

[0132] In a fifteenth aspect, a communication system is provided. The communication system includes a terminal device and a network device, and the network device may include an access network device and a core network device. The network device is used to execute the communication method described in any possible implementation of the first aspect and the third aspect, and the terminal device is used to execute the communication method described in any possible implementation of the second aspect and the fourth aspect.

[0133] In the sixteenth aspect, a computer-readable storage medium is provided, which includes a computer program or instructions. When the computer program or instructions are executed by a processor, the communication method described in any possible implementation method of the first to fourth aspects is implemented.

[0134] In the seventeenth aspect, a computer program product is provided, which includes instructions. When the instructions are executed by a processor, the communication method described in any possible implementation method of the first to fourth aspects is implemented.

[0135] In an eighteenth aspect, a chip is provided, the chip comprising a processing logic circuit and an interface circuit, wherein the number of the processing logic circuit can be one or more, and the number of the interface circuit can be multiple.

[0136] The interface circuit is used to receive the code instructions and transmit them to the processing logic circuit. The processing logic circuit is used to run the code instructions to execute the communication method described in any one of the implementation modes of the first aspect to the fourth aspect.

[0137] Optionally, the chip may include a memory, which may be integrated with the processing logic circuit or may be separately provided. The memory may be used to store computer programs and / or data involved in the communication method described in any one of the first to fourth aspects.

[0138] In the present application, the chip described in aspect 18 may be located in a terminal device or a network device, and may be located in a terminal device in a communication system or may be a network device. When the chip is located in a network device, it is used to execute the communication method described in any possible implementation of aspect 1 or aspect 3, and when the chip is located in a terminal device, it is used to execute the communication method described in any possible implementation of aspect 2 or aspect 4.

[0139] The technical effects brought about by any implementation method in the fifth to eighteenth aspects can refer to the technical effects brought about by the corresponding implementation method in any one of the first to fourth aspects, and will not be repeated here.

[0140] Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0141] Figure 1 A schematic diagram of circular polarization provided in an embodiment of the present application;

[0142] Figure 2 A schematic diagram of four-color multiplexing provided in an embodiment of the present application;

[0143] Figure 3 A schematic diagram of an architecture of a communication system provided in an embodiment of the present application;

[0144] Figure 4 Another schematic diagram of the architecture of the communication system provided in the embodiment of the present application;

[0145] Figure 5 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0146] Figure 6 Schematic diagram of the communication method provided in the embodiment of the present application Figure 1 ;

[0147] Figure 7 A schematic diagram of resource mapping in a certain beam combined with a polarization mode provided in an embodiment of the present application;

[0148] Figure 8 A schematic diagram of forming a virtual sub-beam spatially based on UE in a certain beam through RRM provided in an embodiment of the present application;

[0149] Fig. 9 A schematic diagram of beams within a cell provided in an embodiment of the present application;

[0150] Fig.10 The communication method of the present invention is shown in FIG. Figure 2 ;

[0151] Fig.11 The communication method of the present invention is shown in FIG. Figure 3 ;

[0152] Fig.12 The communication method of the present invention is shown in FIG. Figure 4 ;

[0153] Fig.13 A schematic diagram of RRC state transition provided in an embodiment of the present application;

[0154] Fig.14 The communication method of the present invention is shown in FIG. Figure 5 ;

[0155] Fig.15 The communication method of the present invention is shown in FIG. Figure 6 ;

[0156] Fig.16 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0157] In order to facilitate understanding of the solutions in the embodiments of the present application, a brief introduction to the relevant technology is first given.

[0158] 1. Polarization mode:

[0159] In a communication system, the polarization modes used when two devices communicate may include: linear polarization, circular polarization, and cross-polarization multiplexing. Among them, linear polarization may include: horizontal polarization, vertical polarization, +45° polarization, -45° polarization, and circular polarization may include: left-hand circular polarization and right-hand circular polarization.

[0160] 2. Cross-polarization multiplexing:

[0161] In current communication systems, in order to improve communication efficiency, two mutually orthogonal polarized electromagnetic waves can also be used for communication at the same time, which can be called cross-polarization multiplexing. Cross-polarization multiplexing can also be called polarization multiplexing and other similar concepts, which are not limited in the embodiments of the present application.

[0162] Among them, cross-polarization multiplexing can include: horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, left-hand right-hand circular polarization cross-polarization multiplexing. For example, horizontal vertical cross-polarization multiplexing means that network equipment and terminal equipment can use horizontal polarization electromagnetic waves and vertical polarization electromagnetic waves to communicate in one frequency band at the same time. In addition, polarization modes such as linear polarization and circular polarization that use electromagnetic waves in one polarization direction can be called single polarization modes.

[0163] The current cross-polarization multiplexing can also be applied to multi-color multiplexing. Taking four-color multiplexing as an example, Figure 2 A schematic diagram of four-color multiplexing provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, in a cell of an access network device (such as a satellite, a base station, etc.), four-color multiplexing can be achieved by frequency division, or by frequency division and polarization division. The following are respectively described:

[0164] For the four-color multiplexing by frequency division, the frequency band used in a cell can be divided into four equal frequency bands. These four frequency bands correspond to four beams f1, f2, f3, and f4 respectively. These four beams are as follows: Figure 2 The patterns shown are arranged in the cell.

[0165] For the four-color multiplexing using frequency division and polarization division, the frequency band used in a cell can be divided into two equal frequency bands. These two frequency bands correspond to two beams, one of which corresponds to f1 and f2, and the other corresponds to f3 and f4. In addition, f1 and f2 use different polarization modes, and f3 and f4 use different polarization modes. f1 uses RHCP, f2 uses LHCP, f3 uses RHCP, and f4 uses LHCP. These four beams are as follows: Figure 2 The patterns shown are arranged in the cell.

[0166] It can be seen that by implementing four-color multiplexing through frequency division and polarization division, the spectrum resource utilization rate of the cell can be doubled, thereby improving communication efficiency.

[0167] At present, network equipment can schedule the polarization mode of a cell so that terminal devices in the cell can work under the same better polarization mode. Specifically, when the network equipment schedules the polarization mode of the terminal device to switch the polarization mode of the terminal device, the network equipment usually uses SIB to instruct all terminal devices in the cell to switch the polarization mode from one polarization mode to another polarization mode. However, this scheduling method can only schedule all terminal devices in the cell, and cannot schedule individual terminal devices, resulting in inflexible scheduling and low spectrum efficiency. In addition, since SIB is periodic, each scheduling needs to wait until the next SIB period to be carried out, resulting in the problem of untimely scheduling.

[0168] In order to solve the above problems, the embodiment of the present application provides a technical solution, which includes a communication system, a communication method and a communication device applied to the communication system, etc. The technical solution provided by the present application will be described below in conjunction with the accompanying drawings.

[0169] The technical solution of the embodiment of the present application can be applied to a wireless communication system, for example: the wireless communication system can be a fourth generation (4G) communication system (for example, a long term evolution (LTE) system), a fifth generation (5G) communication system (for example, a new radio (NR) system), and future mobile communication systems. The technical solution of the embodiment of the present application can also be applied to a satellite communication system or a non-terrestrial network (NTN) communication system, wherein the satellite communication system or the NTN communication system can be integrated with the wireless communication system.

[0170] The present application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0171] In addition, in the embodiments of the present application, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0172] In the embodiments of the present application, a subscript such as W1 may be mistakenly written as a non-subscript form such as W1. When the difference is not emphasized, the meanings to be expressed are consistent.

[0173] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0174] The embodiment of the present application provides a communication system, which can be applicable to communication between a second communication device and a first communication device. The communication system provided in the embodiment of the present application may include one or more second communication devices and one or more first communication devices. The embodiment of the present application does not limit the number of second communication devices and first communication devices in the communication system. The embodiment of the present application takes the first communication device as a terminal device and the second communication device as a network device as an example to illustrate the solution provided in the embodiment of the present application, which is uniformly described here and will not be repeated below.

[0175] As an example, Figure 3 A schematic diagram of the architecture of a communication system provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the communication system may include a network device and a terminal device, and the network device and the terminal device may be connected wirelessly. The network device may exchange data or control signaling with the terminal device.

[0176] Optionally, the communication system provided in the embodiment of the present application can also be applied to communication between network devices and network devices, communication between terminal devices and terminal devices, as well as communication in the Internet of Vehicles, the Internet of Things and the Industrial Internet, etc. Therefore, the embodiment of the present application does not limit the type of equipment at both ends of the communication in the communication system.

[0177] Optionally, the network device in the embodiment of the present application is a device that connects a terminal device to a wireless network. The network device may be a node in a wireless access network, which may also be referred to as a base station, or a radio access network (RAN) node (or device), wherein the base station may be a distributed antenna system, and the device that communicates with a terminal device may be a radio head of the base station. For example, the network device may include an evolved base station (NodeB or eNB or eNodeB, evolved Node B) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-A), such as a traditional macro base station eNB and a micro base station eNB in ​​a heterogeneous network scenario; or it may also include a next generation node B (next generation node B, gNB) in a 5G NR system, or it may also include a transmission point (transmitting and receiving point, TRP), a transmitting point (transmitting point, TP), a home base station (for example, home evolved NodeB, or home Node B, HNB), a base band unit (base band unit, BBU), a base band pool BBU pool, or a wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), mobile switching center, and equipment that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications; or it can also be a base station device in a 5G network or a network device in a future-evolved public land mobile network (PLMN); or it can also be a wearable device or a vehicle-mounted device; or it can also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (CloudRAN) system; or it can include network equipment in an NTN, that is, it can be deployed on a high-altitude platform or a satellite. In an NTN, a network device can be used as a layer 1 (L1) relay, or as a base station, or as a DU, or as an integrated access and backhaul (IAB) node, which is not limited in the embodiments of the present application. Of course, the network device can also be a node in the core network.

[0178] Optionally, the terminal device in the embodiment of the present application may be a device for realizing wireless communication functions, such as a terminal or a chip that can be used in a terminal, etc. The terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a terminal agent or a terminal device, various terminals in industrial scenarios (such as a robot or a mechanical arm equipped with a wireless transmission module), etc. in a 5G network or a future evolved PLMN. The access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device or a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a drone, a satellite terminal, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Alternatively, the terminal may be a terminal in vehicle-to-everything (V2X) (e.g., a vehicle networking device), a terminal in device-to-device communication, or a terminal in machine-to-machine (M2M) communication, etc. The terminal may be mobile or fixed.

[0179] Optionally, the network devices and terminal devices in the embodiments of the present application can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network devices and terminal devices.

[0180] Exemplarily, when the technical solution of the embodiment of the present application is applied to the NTN communication system, the above Figure 3 The communication system shown can be Figure 4 As shown, Figure 4 Another schematic diagram of the architecture of a communication system provided in an embodiment of the present application, wherein the communication system may include a satellite base station and a terminal device, and the satellite base station and the terminal device may be connected wirelessly. The satellite base station may exchange data or control signaling with the terminal device.

[0181] The embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application. As long as it is possible to communicate according to the method provided by the embodiments of the present application by running a program that records the code of the method provided by the embodiments of the present application, for example, the execution subject of the communication method provided by the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.

[0182] In other words, the relevant functions of the terminal device or network device in the embodiment of the present application can be implemented by one device, or by multiple devices together, or by one or more functional modules in one device, and the embodiment of the present application does not specifically limit this. It is understandable that the above functions can be network elements in hardware devices, or software functions running on dedicated hardware, or a combination of hardware and software, or virtualization functions instantiated on a platform (e.g., a cloud platform).

[0183] For example, the relevant functions of the terminal device or network device in the embodiment of the present application can be Figure 5 The communication device 500 is implemented. Figure 5 FIG. 5 is a schematic diagram of a structure of a communication device 500 provided in an embodiment of the present application. The communication device 500 includes one or more processors 501, a communication line 502, and at least one communication interface ( Figure 5 The example in which the communication interface 504 and a processor 501 are included is merely exemplary), and optionally a memory 503 may also be included.

[0184] The processor 501 may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0185] The communication line 502 may include a passage for connecting different components. Exemplarily, the communication line 502 may be a bus, such as an address bus, a data bus, a control bus, and the like.

[0186] The communication interface 504 may be a transceiver module, which may be used to communicate with other devices or communication networks. For example, the transceiver module may be a device such as a transceiver or a transceiver. Optionally, the communication interface 504 may also be a transceiver circuit located in the processor 501, which is used to implement signal input and signal output of the processor.

[0187] The memory 503 may be a device with a storage function. For example, it may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may exist independently and be connected to the processor via a communication line 502. The memory may also be integrated with the processor.

[0188] The memory 503 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 501. The processor 501 is used to execute the computer-executable instructions stored in the memory 503, thereby realizing the communication method provided in the embodiment of the present application.

[0189] Alternatively, in an embodiment of the present application, the processor 501 may also perform processing-related functions in the communication method provided in the following embodiments of the present application, and the communication interface 504 is responsible for communicating with other devices or communication networks, which is not specifically limited in the embodiments of the present application.

[0190] The computer executable instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.

[0191] In a specific implementation, as an embodiment, the processor 501 may include one or more CPUs, such as Figure 5 CPU0 and CPU1 in.

[0192] In a specific implementation, as an embodiment, the communication device 500 may include multiple processors, such as Figure 5501 and processor 508 in the embodiment of the present invention. Each of these processors may be a single-CPU processor or a multi-CPU processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0193] In a specific implementation, as an embodiment, the communication apparatus 500 may further include an output device 505 and an input device 506. The output device 505 communicates with the processor 501 and may display information in a variety of ways.

[0194] The communication system provided by the present application is introduced above. The communication method provided by an embodiment of the present application will be described below in conjunction with the accompanying drawings.

[0195] According to the scope of the scheduled device, the communication method provided in the embodiment of the present application can be divided into three types, including: scheduling the polarization mode of the terminal device at the terminal level, scheduling the polarization mode of the terminal device at the beam level, and scheduling the polarization mode of the terminal device at the cell level. The following are introduced in turn:

[0196] The present application provides an embodiment for scheduling the polarization mode of a terminal device at the terminal level.

[0197] Please refer to Figure 6 , Figure 6 The communication method of the present invention is shown in FIG. Figure 1 The communication method can be applied to the above communication system and can be executed by a terminal device or a network device in the above communication system. The communication method can schedule the polarization mode of the terminal device at the terminal level, that is, the network device can adjust the polarization mode of a certain terminal device to make the scheduling of the polarization mode of the terminal device more flexible and the scheduling granularity finer, thereby improving the spectrum efficiency. The method may include S601 to S603, which are described in sequence below.

[0198] S601, the network device determines first indication information.

[0199] The first indication information is used to indicate the first polarization mode of the terminal device; or in other words, the first indication information can be used to indicate that the polarization mode of the terminal device is switched to the first polarization mode; or, the first indication information can be used to indicate that the terminal device works in the first polarization mode; or, the first indication information can be used to indicate that the polarization mode of the terminal device is the first polarization mode. It should be noted that, unless otherwise specified, the meanings to be expressed by these expressions of the first indication information are consistent and can be used interchangeably.

[0200] The first polarization mode may include: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. Among them, linear polarization may include: any one of horizontal polarization, vertical polarization, +45° polarization, and -45° polarization; cross-polarization multiplexing may include: any one of horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, and left-hand right-hand circular polarization cross-polarization multiplexing, which are uniformly explained here and will not be repeated below.

[0201] S602: The network device sends first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

[0202] S603: The terminal device communicates with the network device based on the first polarization mode.

[0203] Among them, the terminal device communicating with the network device based on the first polarization mode can be understood as: the terminal device working in the first polarization mode, or understood as the terminal device switching the polarization mode to the first polarization mode.

[0204] Exemplarily, if the first polarization mode indicated by the first indication information is left-hand circular polarization, the terminal device can operate in the polarization mode of left-hand circular polarization to achieve communication with the network device. If the first polarization mode indicated by the first indication information is left-hand right-hand circular polarization cross-polarization multiplexing, the terminal device can operate in the polarization mode of left-hand right-hand circular polarization cross-polarization multiplexing to achieve communication with the network device.

[0205] In S601, the network device determines the implementation method of the first indication information, which may include the following methods 1 to 6, which are described below respectively:

[0206] Method 1: The network device determines the first indication information according to the polarization mode supported by the terminal device.

[0207] Optionally, the network device may determine a polarization mode from polarization modes supported by the terminal device as the first polarization mode, thereby determining the first indication information.

[0208] Assuming that the polarization modes supported by the terminal device include: left-hand circular polarization, right-hand circular polarization, and left-hand right-hand circular polarization cross-polarization multiplexing, and the network device determines the left-hand right-hand circular polarization cross-polarization multiplexing as the first polarization mode, then the network device can generate first indication information, and the first indication information is used to indicate that the terminal device operates under left-hand right-hand circular polarization cross-polarization multiplexing.

[0209] In mode 1, before the network device determines the first indication information, mode 1 may further include: the network device obtains the polarization mode supported by the terminal device. The implementation process of the network device obtaining the polarization mode supported by the terminal device may include the following steps:

[0210] Step 1.1: The network device sends UE capability request information to the terminal device. Correspondingly, the terminal device receives the UE capability request information from the network device.

[0211] Step 1.2: The terminal device generates a UE capability report (UE capability reporting) according to the UE capability request information, and feeds back the UE capability report to the network device.

[0212] In step 1.1 to step 1.2, the UE capability request information is used to instruct the terminal device to feedback the polarization modes supported by the terminal device. The UE capability report includes the polarization modes supported by the terminal device. The UE capability report may also be referred to as UE capability information (UE capability information), which is not limited thereto.

[0213] For example, assuming that the polarization modes supported by the terminal device include: left-hand circular polarization, right-hand circular polarization, and left-hand right-hand circular polarization cross-polarization multiplexing, then the UE capability report generated by the terminal device may include: the terminal device supports left-hand circular polarization, right-hand circular polarization, and left-hand right-hand circular polarization cross-polarization multiplexing.

[0214] Optionally, both the UE capability request information and the UE capability report may be carried in RRC signaling.

[0215] Optionally, the UE capability report may be carried in an uplink (UL) dedicated control channel (DCCH). In some possible embodiments, the UE capability report may be implemented using radio frequency (RF) parameters or physical layer (PHY) parameters in the UL-DCCH.

[0216] When the UE capability report is implemented using the RF parameters in the UL-DCCH, a field in the RF parameters can be used to indicate the polarization modes supported by the terminal device. Exemplarily, the information format of the RF parameters in the UL-DCCH can be as follows:

[0217]

[0218] In the above-mentioned information format of the RF parameters, the polarization field in the RF parameters can be used to indicate the polarization mode supported by the terminal device.

[0219] In some possible embodiments, the polarization field length in the RF parameters may be 2 bits. Exemplarily, Table 1 shows a correspondence between the polarization field and the polarization mode supported by the terminal device. Referring to Table 1, when the polarization field is 00, it can be indicated that the terminal device supports left-hand circular polarization; when the polarization field is 01, it can be indicated that the terminal device supports right-hand circular polarization; when the polarization field is 10, it can be indicated that the terminal device supports left-hand right-hand circular polarization cross-polarization multiplexing.

[0220] Table 1

[0221] The value of the Polarization field Polarization modes supported by the terminal device 00 Left-hand circular polarization 01 Right-hand circular polarization 10 Left-hand right-hand circular polarization cross-polarization multiplexing

[0222] In some other possible embodiments, the uplink polarization mode and the downlink polarization mode supported by the terminal device may be indicated respectively. The polarization field length in the RF parameter may be 4 bits. Exemplarily, Table 2 shows another correspondence between the polarization field and the polarization mode supported by the terminal device. Referring to Table 2, it can be seen that when the polarization field is 0000, it can be indicated that the terminal device supports uplink left-hand circular polarization and downlink left-hand circular polarization, and so on. The correspondence between the values ​​of other polarization fields and the polarization modes supported by the terminal device is referred to Table 2, which will not be repeated here.

[0223] Table 2

[0224]

[0225]

[0226] When the UE capability report is implemented using the PHY parameters in the UL-DCCH, a field in the PHY parameters can be used to indicate the polarization modes supported by the terminal device. Exemplarily, the information format of the PHY parameters in the UL-DCCH can be as follows:

[0227]

[0228] In the above information format of the PHY parameters, the polarization field in the PHY parameters can be used to indicate the polarization mode supported by the terminal device.

[0229] In some possible embodiments, the length of the polarization field in the PHY parameter may be 2 bits, as shown in Table 1.

[0230] In some other possible embodiments, the length of the polarization field in the PHY parameter may be 4 bits, as shown in Table 2.

[0231] It should be noted that the length of the polarization field in the above-mentioned RF parameters and PHY parameters is only an example. The embodiment of the present application does not limit the length of the polarization field in the RF parameters and PHY parameters. When applied, the length of the polarization field in the RF parameters and PHY parameters can be set according to actual needs. In addition, in the above Tables 1 and 2, the correspondence between the polarization field in the RF parameters or PHY parameters and the polarization mode supported by the terminal device is also an example. The embodiment of the present application does not limit the correspondence between the polarization field in the RF parameters or PHY parameters and the polarization mode supported by the terminal device. When applied, it can be adjusted according to actual needs. Taking Table 1 as an example, the correspondence in Table 1 can be adjusted to the following Table 3. Table 2 is similar to this and will not be repeated.

[0232] Table 3

[0233] The value of the Polarization field Polarization modes supported by the terminal device 10 Left-hand circular polarization 00 Right-hand circular polarization 01 Left-hand right-hand circular polarization cross-polarization multiplexing

[0234] In addition, in the above Tables 1 to 2, the polarization modes supported by the terminal device that can be indicated by the polarization field in the RF parameter or PHY parameter are not limited to left-hand circular polarization, right-hand circular polarization, and left-hand right-hand circular polarization cross-polarization multiplexing. The polarization modes supported by the terminal device that can be indicated by the polarization field in the RF parameter or PHY parameter may include: left-hand circular polarization, right-hand circular polarization, horizontal polarization, vertical polarization, +45° polarization, -45° polarization, horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, left-hand right-hand circular polarization cross-polarization multiplexing or one or more. The specific indication principle can refer to the indication principle in the above Tables 1 to 2, and will not be enumerated one by one here. Among them, as the types of polarization modes supported by the terminal device that can be indicated by the polarization field in the RF parameter or PHY parameter increase, the length of the polarization field in the RF parameter or PHY parameter can be increased accordingly to support all indications of these types.

[0235] It should also be noted that the above RF parameters and PHY parameters may also include an uplink polarization field and a downlink polarization field, respectively. The uplink polarization field is used to indicate the uplink polarization mode supported by the terminal device, and the downlink polarization field is used to indicate the downlink polarization mode supported by the terminal device. The indication principle can refer to the indication principle of Tables 1 to 2 above, which will not be repeated here. In this way, the terminal device can report the polarization modes supported by the uplink and downlink to the network device respectively through the UL-DCCH, thereby improving the flexibility of reporting.

[0236] It can be understood that in the above steps 1.1 to 1.2, when the terminal device feeds back the UE capability report, it can configure the value of the polarization field in the RF parameter or PHY parameter to a value corresponding to the polarization mode supported by it, so as to realize the feedback of the UE capability report to the network device. For example, taking the above Table 1 as an example, assuming that the terminal device supports left-hand right-hand circular polarization cross-polarization multiplexing, then the terminal device can configure the polarization field in the RF parameter in the UL-DCCH to 10, and send the UL-DCCH to the network device, so as to realize the feedback of the information that the terminal device supports left-hand right-hand circular polarization cross-polarization multiplexing to the network device.

[0237] Method 2: The network device determines the first indication information according to the CSI of channels of different polarization modes measured by the terminal device.

[0238] Optionally, the network device may determine at least one available polarization mode according to the CSI of channels of different polarization modes measured by the terminal device; then determine one available polarization mode as the first polarization mode from the at least one available polarization mode, and generate first indication information.

[0239] Wherein, the CSI of channels of different polarization modes measured by the terminal device includes: the CSI of the channel of polarization mode A and the CSI of the channel of polarization mode B. For example, the network device can determine at least one available polarization mode by judging the following conditions:

[0240] In a possible implementation, if the first condition is met, polarization mode B can be determined as an available polarization mode. The first condition may include: the terminal device operates in polarization mode A, and the difference between the first measurement value in the CSI of the channel of polarization mode B and the second measurement value in the CSI of the channel of polarization mode A is greater than (or ≥) a first threshold; or, the first condition may include: the terminal device operates in polarization mode A, and the CSI of the channel of polarization mode A is less than (or ≤) threshold 1, and the CSI of the channel of polarization mode B is greater than (or ≥) threshold 2. In other words, when the channel quality of polarization mode A is worse than the channel quality of polarization mode B, polarization mode B with better channel quality can be used as the first polarization mode to instruct the terminal device to switch to a polarization mode with better channel quality, thereby improving communication efficiency.

[0241] The first measurement value and the second measurement value may be reference signal received power (RSRP).

[0242] Exemplarily, if polarization mode A is left-hand circular polarization, polarization mode B is right-hand circular polarization, and CSI of the right-hand circular polarization channel minus CSI of the left-hand circular polarization channel>first threshold, then it means that the CSI of the left-hand circular polarization channel and the CSI of the right-hand circular polarization channel meet the first condition, and it can be determined that the left-hand circular polarization is an available polarization mode, and the left-hand circular polarization is determined as the first polarization mode, and first indication information is generated, and the first indication information is used to indicate that the polarization mode of the terminal device is left-hand circular polarization. Among them, the sizes of the first threshold, threshold 1, and threshold 2 can be determined by the network device or agreed upon by the protocol, and are not limited here.

[0243] Another possibility is that in implementation, if the second condition is met, it can be determined that polarization mode A and polarization mode B cross-polarization multiplexing are available polarization modes, that is, it is determined that the terminal device has the ability to turn on polarization multiplexing. Among them, the second condition includes: the terminal device operates in polarization mode A or polarization mode B, and the CSI of the channel of polarization mode A and the CSI of the channel of polarization mode B are both greater than (or ≥) the second threshold. At this time, the network device can determine whether the terminal device turns on polarization multiplexing according to the service needs of the terminal device, that is, whether the terminal device operates under cross-polarization multiplexing of polarization mode A and polarization mode B. The implementation method of the network device determining whether the terminal device turns on polarization multiplexing according to the service needs of the terminal device can refer to the relevant description in the following method 3, which will not be repeated here.

[0244] Exemplarily, if polarization mode A is left-hand circular polarization, polarization mode B is right-hand circular polarization, and the CSI of the right-hand circular polarization channel and the CSI of the left-hand circular polarization channel are both greater than the second threshold, then it can be determined that left-hand right-hand circular polarization cross-polarization multiplexing is an available polarization mode, that is, it is determined that the terminal device has the ability to turn on polarization multiplexing. At this time, if the service demand of the terminal device is large, such as the throughput of the terminal device is greater than the throughput threshold, the network device can determine that the terminal device turns on polarization multiplexing, that is, the network device determines that left-hand right-hand circular polarization cross-polarization multiplexing is the first polarization mode, and generates first indication information, which is used to indicate that the polarization mode of the terminal device is left-hand right-hand circular polarization cross-polarization multiplexing, so as to indicate that the terminal device works under left-hand right-hand circular polarization cross-polarization multiplexing. In this way, when the service demand of the terminal device is large and the channel quality of polarization multiplexing is good, polarization multiplexing can be turned on for the terminal device to improve the throughput of the terminal device. Among them, the size of the second threshold can be determined by the network device or agreed upon by the protocol, and is not limited here.

[0245] In another possible implementation, if the third condition is met, polarization mode B can be determined as an available polarization mode, and polarization mode A and polarization mode B cross-polarization multiplexing can be determined as an unavailable polarization mode, that is, the channel quality of the polarization multiplexing of the terminal device is poor. Among them, the third condition is: the terminal device operates under polarization mode A and polarization mode B cross-polarization multiplexing, and the CSI of the channel of polarization mode A is less than (or ≤) the third threshold, and the CSI of the channel of polarization mode B is greater than (or ≥) the third threshold. In other words, if the channel quality of A is poor in the two orthogonal polarization modes (denoted as A and B) currently used by the terminal device, the network device can instruct the terminal device to operate in B, and the channel quality of B is better, thereby improving the communication efficiency of the terminal device.

[0246] Exemplarily, if polarization mode A is left-hand circular polarization, polarization mode B is right-hand circular polarization, and the CSI of the left-hand circular polarization channel is less than the third threshold, and the CSI of the right-hand circular polarization channel is greater than the third threshold, then the network device can determine that right-hand circular polarization is an available polarization mode, left-hand right-hand circular polarization cross-polarization multiplexing is an unavailable polarization mode, and right-hand circular polarization is determined as the first polarization mode, and first indication information is generated, and the first indication information is used to indicate that the polarization mode of the terminal device is right-hand circular polarization, so as to indicate that the terminal device works under right-hand circular polarization, thereby improving channel quality and communication efficiency. Among them, the size of the third threshold can be determined by the network device or agreed upon by the protocol, and is not limited here.

[0247] Among them, polarization mode A and polarization mode B are both polarization modes supported by the terminal device. The types of polarization mode A and polarization mode B can refer to the type of the first polarization mode mentioned above. They are uniformly described here and will not be repeated below.

[0248] In mode 2, before the network device determines the first indication information, it can also obtain the CSI of the channels of different polarization modes measured by the terminal device. The network device can obtain the implementation process of the CSI of the channels of different polarization modes measured by the terminal device through the following steps:

[0249] Step 2.1: The network device sends CSI request (CSI enquire) information to the terminal device. Correspondingly, the terminal device receives the CSI request information from the network device.

[0250] In step 2.2, the terminal device measures the CSI of channels of different polarization modes according to the CSI request information to generate a CSI report.

[0251] Step 2.3: The terminal device sends a CSI report to the network device. Correspondingly, the network device receives the CSI report from the terminal device.

[0252] In step 2.1 to step 2.3, the CSI request information is used to instruct the terminal device to feed back the CSI of channels of different polarization modes. The CSI report includes the CSI of channels of different polarization modes measured by the terminal device. The CSI request information may also be referred to as CSI report configuration information, which is not limited thereto.

[0253] For example, assuming that the CSI request information is used to instruct the terminal device to feed back the CSI of the left-hand circularly polarized channel and the CSI of the right-hand circularly polarized channel, the terminal device can measure the CSI of the left-hand circularly polarized channel and the CSI of the right-hand circularly polarized channel, and then generate a CSI report, which includes: the CSI of the left-hand circularly polarized channel and the CSI of the right-hand circularly polarized channel.

[0254] Optionally, in steps 2.1 to 2.3, the CSI request information may also be used to instruct the terminal device to feedback the CSI of channels of different polarization modes periodically, semi-persistently or aperiodically.

[0255] For example, if the CSI request information is also used to instruct the terminal device to periodically feed back the CSI of channels with different polarization modes, the terminal device can measure the CSI of channels with different polarization modes once every period, and feed back the CSI report obtained by this measurement to the network device. The length of the period can be configured by the network device to the terminal device, or agreed upon by the protocol, and is not limited here.

[0256] For another example, if the CSI request information is also used to instruct the terminal device to non-periodically feed back the CSI of channels with different polarization modes, then the terminal device can measure the CSI of channels with different polarization modes once, and feed back the CSI report obtained by this measurement to the network device.

[0257] For another example, if the CSI request information is also used to instruct the terminal device to feedback the CSI of channels with different polarization modes in a semi-periodic manner, the terminal device can measure the CSI of channels with different polarization modes once every semi-period, and feedback the CSI report obtained by this measurement to the network device. The length of the semi-period can be configured by the network device to the terminal device, or agreed upon by the protocol, and is not limited here.

[0258] Optionally, the CSI request information may be carried in RRC signaling. In some possible embodiments, the network device may configure the polarization measurement field in the CSI ReportConfig field to implement the above CSI request information, thereby requiring the terminal device to feedback the CSI of channels with different polarization modes. The information format of the CSI ReportConfig field may be as follows:

[0259]

[0260] Among them, the polarization measurement field (Polarization Config) in the CSI ReportConfig field can be used to instruct the terminal device to feedback the CSI of channels with different polarization modes.

[0261] In some possible embodiments, the polarization measurement field length in the CSI ReportConfig field may be 2 bits. Exemplarily, Table 4 shows the correspondence between the polarization measurement field in the CSI ReportConfig field and the information fed back by the terminal device. Referring to Table 4, when the polarization measurement field is 00, it may indicate that the terminal device feeds back the CSI of the left-hand circularly polarized channel; when the polarization measurement field is 01, it may indicate that the terminal device feeds back the CSI of the right-hand circularly polarized channel; when the polarization measurement field is 10, it may indicate that the terminal device feeds back the CSI of the left-hand circularly polarized channel and the CSI of the right-hand circularly polarized channel.

[0262] Table 4

[0263]

[0264]

[0265] Optionally, the CSI report may be carried on a physical uplink control channel (physical uplink control channel, PUCCH) or a physical uplink shared channel (physical uplink shared channel, PUSCH), which is not limited.

[0266] The CSI report in the Xx protocol includes part 1 and part 2. In some possible embodiments, when the terminal device feeds back the CSI report, if the CSI request information indicates that the terminal device feeds back the CSI of channels in two polarization modes, then when the terminal device feeds back the CSI report, it can:

[0267] Part 1 and part 2 in the CSI report are used to transmit the CSI of a channel in one polarization mode, and two part fields, part 3 and part 4, are configured in the CSI report, so that part 3 and part 4 are used to transmit the CSI of another channel in another polarization mode.

[0268] Alternatively, use part 1 in the CSI report to transmit the CSI of a channel in one polarization mode, and use part 2 in the CSI report to transmit the CSI of a channel in another polarization mode. It should be noted that transmitting the CSI of a channel in one polarization mode in part 1 may cause part 1 to no longer be able to carry other information. In this case, the lower priority information in part 1 can be discarded. For example, if the terminal device does not perform multiple input multiple output (MIMO) transmission, the MIMO information is lower priority information, and the MIMO information can be discarded from part 1 during transmission, so that the CSI of a channel in one polarization mode can be transmitted using one part.

[0269] Furthermore, when transmitting CSI of two polarization channels, the CSI of one polarization channel may be a change in the CSI of another polarization channel. For example, when the CSI of one polarization channel is transmitted in part 1 of the CSI report, and the CSI of another polarization channel is transmitted using part 2 of the CSI report, the CSI of the polarization channel in part 2 may be a change in the CSI of the polarization channel in part 1. In this way, the overhead of the CSI report can be reduced.

[0270] Method 3: The network device determines the first indication information according to the service requirements of the terminal device.

[0271] The service demand of the terminal device may include: uplink service throughput of the terminal device, and / or downlink service throughput of the terminal device. In addition, the service demand here may refer to the current service demand of the terminal device, which is uniformly explained here and will not be repeated below.

[0272] Optionally, the network device may determine at least one available polarization mode according to a service requirement of the terminal device; then determine an available polarization mode from the at least one available polarization mode as the first polarization mode, and generate first indication information.

[0273] The network device determines, according to the service requirements of the terminal device, an implementation method of at least one available polarization mode, which may include the following possible methods:

[0274] Mode 3.1: If the fourth condition is met, it can be determined that downlink cross-polarization multiplexing is an available polarization mode. The fourth condition may include: the current downlink polarization mode of the terminal device is a single polarization mode, and the downlink throughput of the terminal device is greater than (or ≥) the first throughput threshold. In this way, the network device can enable downlink polarization multiplexing for the terminal device when the downlink service demand of the terminal device is large, thereby improving the throughput of the terminal device.

[0275] Exemplarily, taking the example that the polarization modes supported by the terminal device include left-hand circular polarization mode, right-hand circular polarization mode and left-hand right-hand circular polarization cross-polarization multiplexing, if the downlink polarization mode of the terminal device is left-hand circular polarization mode, and the downlink throughput of the terminal device is greater than the first throughput threshold, then it can be determined that the downlink left-hand right-hand circular polarization cross-polarization multiplexing is an available polarization mode, and the downlink left-hand right-hand circular polarization cross-polarization multiplexing is determined as the first polarization mode, and first indication information is generated, and the first indication information is used to indicate that the downlink polarization mode of the terminal device is left-hand right-hand circular polarization cross-polarization multiplexing. Among them, the size of the first throughput threshold can be determined by the network device or agreed upon by the protocol, and is not limited here.

[0276] Mode 3.2: If the fifth condition is met, uplink cross-polarization multiplexing can be determined as an available polarization mode. The fifth condition may include: the current uplink polarization mode of the terminal device is a single polarization mode, and the uplink throughput of the terminal device is greater than (or ≥) the second throughput threshold. In this way, the network device can enable uplink polarization multiplexing for the terminal device when the uplink service demand of the terminal device is large, thereby improving the throughput of the terminal device.

[0277] The example of method 3.2 can refer to the example of method 3.1 above, which will not be repeated here.

[0278] It can be understood that method 3.1 and method 3.2 can be executed together, so that the network equipment can enable uplink and downlink polarization multiplexing for the terminal device when the uplink and downlink service demands of the terminal device are both large, thereby improving the throughput of the terminal device.

[0279] Mode 3.3: If the sixth condition is met, the downlink single polarization mode can be determined as an available polarization mode. The sixth condition may include: the current downlink polarization mode of the terminal device is cross-polarization multiplexing, and the downlink throughput of the terminal device is less than (or ≤) the third throughput threshold. In this way, the network device can turn off downlink polarization multiplexing for the terminal device when the downlink service demand of the terminal device is small, thereby further reducing the power consumption of the terminal device.

[0280] Exemplarily, taking the example that the polarization modes supported by the terminal device include left-hand circular polarization mode, right-hand circular polarization mode, and left-hand right-hand circular polarization cross-polarization multiplexing, if the downlink polarization mode of the terminal device is left-hand right-hand circular polarization cross-polarization multiplexing, and the downlink throughput of the terminal device is less than the third throughput threshold, then the downlink left-hand circular polarization mode can be determined as an available polarization mode, and the downlink left-hand circular polarization mode is determined as the first polarization mode, and first indication information is generated, and the first indication information is used to indicate that the downlink polarization mode of the terminal device is a left-hand circular polarization mode. Among them, the size of the third throughput threshold can be determined by the network device or agreed upon by the protocol, and is not limited here.

[0281] Mode 3.4: If the seventh condition is met, the uplink single polarization mode can be determined as an available polarization mode. The seventh condition may include: the current uplink polarization mode of the terminal device is cross-polarization multiplexing, and the uplink throughput of the terminal device is less than (or ≤) the second throughput threshold. In this way, the network device can turn off uplink polarization multiplexing for the terminal device when the uplink service demand of the terminal device is small, so as to avoid waste of air interface resources and reduce terminal power consumption.

[0282] The example of method 3.4 can refer to the example of method 3.3 above, which will not be repeated here.

[0283] It can be understood that method 3.3 and method 3.4 can be executed together, so that the network equipment can turn off uplink and downlink polarization multiplexing for the terminal device when the uplink and downlink service demands of the terminal device are relatively small, thereby further reducing the throughput of the terminal device.

[0284] In mode 3, before determining the first indication information, the network device may also obtain the service requirements of the terminal device. The implementation process of the network device obtaining the service requirements of the terminal device may include: obtaining the throughput of the uplink service of the terminal device and / or the throughput of the downlink service of the terminal device.

[0285] Mode 4: The network device determines the first indication information according to the polarization mode expected by the terminal device.

[0286] The polarization mode expected by the terminal device may refer to the polarization mode that the terminal device expects the network device to schedule to the terminal device according to its own service requirements.

[0287] Optionally, the network device may determine at least one available polarization mode according to the polarization mode expected by the terminal device; then determine an available polarization mode from the at least one available polarization mode as the first polarization mode, and generate first indication information.

[0288] Optionally, the network device determines the polarization mode expected by the terminal device as an available polarization mode. Exemplarily, if the polarization mode expected by the terminal device is left-hand circular polarization, the network device may determine left-hand circular polarization as an available polarization mode, determine left-hand circular polarization as a first polarization mode, and generate first indication information, where the first indication information is used to indicate that the polarization mode of the terminal device is left-hand circular polarization.

[0289] It can be understood that, in the case where the polarization mode of the terminal device is left-hand circular polarization or right-hand circular polarization cross-polarization, if the terminal device determines that its own service throughput has decreased, the terminal device can determine that the expected polarization mode of the terminal device is left-hand circular polarization, so as to request the network device to use left-hand circular polarization, thereby reducing the power consumption of the device. For another example, in the case where the polarization mode of the terminal device is left-hand circular polarization, if the terminal device determines that its own service throughput has increased, the terminal device can determine that the expected polarization mode of the terminal device is left-hand circular polarization or right-hand circular polarization cross-polarization, so as to request the network device to use left-hand right-hand circular polarization cross-polarization, thereby improving the throughput. In this way, the terminal device can apply to the network device whether to use cross-polarization multiplexing according to its own service needs, thereby achieving flexible adjustment between low power consumption and high throughput, and improving the spectrum efficiency of the polarization mode of the terminal device.

[0290] In mode 4, before the network device determines the first indication information, it can also obtain the polarization mode expected by the terminal device. The network device obtains the polarization mode expected by the terminal device, which can be referred to in the following Fig.15 S1501 to S1503 in the communication method shown are not described in detail here. The polarization mode expected by the terminal device can be sent to the network device by carrying various information, such as PUCCH or PUSCH, etc., which is not limited.

[0291] Mode 5: The network device determines the first indication information according to weather information.

[0292] The weather information may refer to the meteorological conditions on the signal propagation path between the network device and the terminal device, and the meteorological conditions may include the amount of rainfall (snow), and / or the thickness of the cloud layer. In other words, the weather information may include the amount of rainfall (snow), and / or the thickness of the cloud layer, which are uniformly explained here and will not be repeated below.

[0293] Optionally, the network device may determine at least one available polarization mode according to weather information; then determine one available polarization mode from the at least one available polarization mode as the first polarization mode, and generate first indication information.

[0294] In a possible implementation, if the eighth condition is met, the network device may determine that the single polarization mode is an available polarization mode. The eighth condition may include: the terminal device operates under cross-polarization multiplexing, and the amount of rainfall (snow) is greater than (or ≥) the rainfall (snow) threshold, and / or the cloud thickness is greater than (or ≥) the thickness threshold. The size of the thickness threshold can be determined by the network device or agreed upon by the protocol, and is not limited here.

[0295] In other words, when the terminal device operates in cross-polarization multiplexing and the weather on the signal propagation path between the network device and the terminal device is bad, the network device can instruct the terminal device to operate in a single polarization mode (such as left-hand circular polarization) to reduce signal interference and improve communication quality.

[0296] In mode 5, the network device may also obtain weather information before determining the first indication information. The implementation method of the network device obtaining weather information may be: the network device receives the current weather information from the weather station, and determines the weather information on the signal propagation path between the network device and the terminal device based on the current weather information and the locations of the network device and the terminal device. Alternatively, the network device receives the current weather information from the weather station, and determines the weather information on the signal propagation path of the network device coverage area based on the current weather information and the network device coverage area.

[0297] Mode 6: The network device determines the first indication information according to the crosstalk condition between the orthogonal polarization channels.

[0298] The crosstalk situation between orthogonal polarization channels may include a crosstalk value between orthogonal polarization channels. The crosstalk value may also be referred to as a crosstalk degree, which is explained uniformly here and will not be described in detail below. The method of measuring the crosstalk degree between orthogonal polarization channels may also be obtained by mathematical operations of other quantities, such as "cross-polarization identification" and "isolation degree". The method of using specific values ​​of these quantities as thresholds and measuring the crosstalk degree is equivalent to measuring using the crosstalk value, which will not be described in detail.

[0299] Mode 6 may include: the network device determines an available polarization mode and an unavailable polarization mode according to the crosstalk between orthogonal polarization channels, and then uses one or more of the above-mentioned modes 1 to 5 to determine one of the available polarization modes as the first polarization mode, thereby determining the first indication information.

[0300] In one possible implementation, if the ninth condition is met, the network device may determine that the single polarization mode is an available polarization mode, and determine that the cross-polarization multiplexing is an unavailable polarization mode. Among them, the ninth condition may include: the crosstalk value between the orthogonal polarization channels of the terminal device is greater than (or ≥) the first crosstalk threshold. Among them, the size of the first crosstalk threshold can be determined by the network device or agreed upon by the protocol, and is not limited here. In this way, when the crosstalk between the orthogonal polarization channels between the network device and the terminal device is serious, the network device can limit the polarization mode of the terminal device to a single polarization mode, thereby reducing signal interference and improving communication quality.

[0301] In another possible implementation, if the tenth condition is met, the network device may determine that cross-polarization multiplexing is an available polarization mode. The tenth condition may include: the crosstalk value between the orthogonal polarization channels is less than (or ≤) the second crosstalk threshold. The size of the second crosstalk threshold of the terminal device may be determined by the network device or agreed upon by the protocol, and is not limited here. In this way, when the crosstalk between the orthogonal polarization channels between the network device and the terminal device is not serious, the network device can adjust the polarization mode of the terminal device to cross-polarization multiplexing, thereby improving throughput.

[0302] In mode 6, before the network device determines the first indication information, it may also obtain crosstalk information between orthogonal polarization channels.

[0303] It can be understood that method 6 can be implemented in combination with one or more of the above methods 1 to 5. For relevant combination methods, refer to the examples including method 6 in the following examples 1 to 13.

[0304] In some possible embodiments, when a trigger condition is met, the network device may determine the first indication information according to the trigger condition. The trigger condition may include any one of the first condition to the ninth condition in the above-mentioned method 2 to the method 6, and the trigger condition may trigger the network device to schedule the polarization mode of the terminal device. In other words, if any one of the above-mentioned first condition to the ninth condition is met, the network device may determine the first indication information according to the process corresponding to the met condition, thereby scheduling the polarization mode of the terminal device.

[0305] In this way, the network equipment can promptly discover problems with the polarization mode of the terminal device and promptly adjust the polarization mode of a certain terminal device, so that the polarization mode scheduling of the terminal device is more flexible and the scheduling granularity is finer, thereby improving the spectrum efficiency.

[0306] It is understood that the above-mentioned methods 1 to 6 can be implemented separately or in combination, and the present application embodiment does not limit this. The following is a combination of methods 1 to 3 and methods 5 and 6.

[0307] Example 1: When method 1, method 2, method 3, method 5, and method 6 are implemented in combination, the network device can determine a polarization mode as the first polarization mode among the polarization modes supported by the terminal device based on the CSI of channels of different polarization modes measured by the terminal device, the service requirements of the terminal device, weather information, and crosstalk between orthogonal polarization channels, thereby determining the first indication information.

[0308] Among them, the network device determines a polarization mode as the first polarization mode among the polarization modes supported by the terminal device according to the CSI of channels of different polarization modes measured by the terminal device, the business requirements of the terminal device, weather information, and the crosstalk between orthogonal polarization channels, which may include: the network device determines at least one available polarization mode (recorded as the first set) according to the CSI of channels of different polarization modes measured by the terminal device, the network device determines at least one available polarization mode (recorded as the second set) according to the business requirements of the terminal device, the network device determines at least one available polarization mode (recorded as the third set) according to the weather information, and the network device determines at least one available polarization mode (recorded as the fourth set) according to the crosstalk between orthogonal polarization channels; among the polarization modes included in the first set to the fifth set, one of the polarization modes supported by the terminal device is taken as the first polarization mode.

[0309] Among them, the network equipment can determine at least one available polarization mode based on different information (including CSI of channels of different polarization modes measured by the terminal equipment, service requirements of the terminal equipment, weather information, and any one of the crosstalk conditions between orthogonal polarization channels). The process of the network equipment determining at least one available polarization mode in the above-mentioned methods 2 to 6 can be referred to, and will not be repeated here.

[0310] In other words, when the above-mentioned multiple methods are implemented in combination, the network device can determine multiple polarization mode sets according to different information, and use one of the polarization modes supported by the terminal device as the first polarization mode among the polarization modes included in the multiple polarization mode sets.

[0311] Example 2: When mode 1 and mode 2 are implemented in combination, the network device may determine a polarization mode as the first polarization mode among the polarization modes supported by the terminal device according to the CSI of the channels of different polarization modes measured by the terminal device, thereby determining the first indication information. Exemplarily, the network device may select one of the polarization modes supported by the terminal device as the first polarization mode among one or more polarization modes in which the CSI of the channel is greater than (or ≥) a CSI threshold, thereby determining the first indication information.

[0312] It can be understood that when methods 1 to 3 are implemented in combination with methods 5 and 6, any multiple of them can be selected for implementation in combination. The specific implementation process can refer to the above examples and will not be listed one by one here.

[0313] In combination with the description of the above-mentioned methods 1 to 6, it can be known that the network device can determine the first indication information according to one or more of the polarization modes supported by the terminal device, the CSI of channels of different polarization modes measured by the terminal device, the service requirements of the terminal device, the polarization mode expected by the terminal device, the weather conditions between the terminal device and the network device, and the crosstalk conditions between orthogonal polarization channels. In other words, the first indication information can be determined according to one or more of the following: the polarization modes supported by the terminal device, the CSI of channels of different polarization modes measured by the terminal device, the service requirements of the terminal device, the polarization mode expected by the terminal device, the weather conditions between the terminal device and the network device, and the crosstalk conditions between orthogonal polarization channels.

[0314] It should be understood that in the above-mentioned methods 1 to 6, the network device can combine multiple information to determine a polarization mode that is more suitable for the terminal device, and schedule the polarization mode for the terminal device through the first indication information. On the one hand, it can enable the terminal device to operate in a better polarization mode, thereby improving communication quality and reducing power consumption. On the other hand, it can make the polarization mode scheduling of the terminal device more flexible and the scheduling granularity finer, thereby improving spectrum efficiency.

[0315] Optionally, the first polarization mode may include a first uplink polarization mode, and / or a first downlink polarization mode. The first uplink polarization mode may include: any one of uplink left-hand circular polarization, uplink right-hand circular polarization, uplink horizontal polarization, uplink vertical polarization, uplink +45° polarization, uplink -45° polarization, uplink horizontal vertical cross-polarization multiplexing, uplink ±45° cross-polarization multiplexing, and uplink left-hand right-hand circular polarization cross-polarization multiplexing. The first downlink polarization mode may include: any one of downlink left-hand circular polarization, downlink right-hand circular polarization, downlink horizontal polarization, downlink vertical polarization, downlink +45° polarization, downlink -45° polarization, downlink horizontal vertical cross-polarization multiplexing, downlink ±45° cross-polarization multiplexing, and downlink left-hand right-hand circular polarization cross-polarization multiplexing. Similarly, the second polarization mode to the fourth polarization mode mentioned below can also be divided into an uplink polarization mode and a downlink polarization mode. The division principle refers to the first polarization mode mentioned above, and is explained uniformly here and will not be repeated below.

[0316] It should be pointed out that in the embodiments of the present application, including the above-mentioned methods 1 to 6, and the following methods 7 to 30, for polarization modes that are not specified as uplink and / or downlink, the embodiments of the present application do not limit the polarization modes to uplink and / or downlink. In other words, for polarization modes that are not specified as uplink and / or downlink, it can be any one of an uplink polarization mode, a downlink polarization mode, or an uplink and downlink polarization mode. For example, for left-hand circular polarization, it can be uplink left-hand circular polarization, downlink left-hand circular polarization, or uplink and downlink left-hand circular polarization. The first polarization mode, the second polarization mode, the third polarization mode, the fourth polarization mode, polarization mode A, polarization mode B, polarization mode C, and polarization mode D in the embodiments of the present application are similar and will not be described in detail.

[0317] Optionally, the first indication information may also be used to indicate a duration of the first polarization mode.

[0318] The duration of the first polarization mode can be understood as: the length of time that the terminal device continues to work in the first polarization mode. The duration of the first polarization mode can also be called a timer of the first polarization mode. When the timer expires, the terminal device can restore to the default polarization mode of the cell broadcast by the network device.

[0319] In this way, the network device can indicate the duration of the terminal device working in the first polarization mode, and after the duration indicated by the first indication information expires, the terminal device can be restored to the previous polarization mode. The network device does not need to instruct the terminal device to restore to the previous polarization mode through an indication signaling, which can save signaling overhead and avoid the network device waiting for a long time for the terminal device to feedback the indication signaling. In addition, the flexibility of scheduling the polarization mode of the terminal device can be further improved.

[0320] The implementation manner in which the first indication information indicates the duration of the first polarization mode may include the following mode 7 and mode 8:

[0321] Mode 7: The first indication information may include duration information, and the duration information is used to indicate the duration of the first polarization mode. For example, assuming that the first indication information is used to indicate that the polarization mode of the terminal device is left-hand circular polarization, and the duration information included in the first indication information is 5 seconds (second, s), then the first indication information is also used to indicate that the terminal device works in the polarization mode of left-hand circular polarization for 5 seconds. After the expiration of 5 seconds, the terminal device can be restored to the default polarization mode of the cell broadcast by the network device.

[0322] Mode 8: The first indication information may include a timer index (also referred to as an index for short), and the timer index is used to indicate the duration of the first polarization mode. Assuming that it can be determined according to the timer configuration information that the timer index 1 is used to indicate that the duration of the first polarization mode is 5s, and assuming that the first indication information is used to indicate that the polarization mode of the terminal device is left-hand circular polarization, and the timer index included in the first indication information is 1, then the first indication information is also used to indicate that the terminal device works in the polarization mode of left-hand circular polarization for 5s. After the expiration of 5s, the terminal device can be restored to the default polarization mode of the cell broadcast by the network device.

[0323] Among them, the method for obtaining the above-mentioned timer configuration information may include: obtaining the same timer configuration information through negotiation between the network device and the terminal device or the network device configuring the terminal device. The timer configuration information may include a correspondence between at least one timer index and at least one timer, and the timer refers to the duration of the first polarization mode. For example, as shown in Table 5, Table 5 shows a one-to-one correspondence between 3 timer indexes and 3 timers. As shown in Table 5, timer indexes 1, 2, and 3 correspond to timers of 5s, 10s, and 15s, respectively.

[0324] Table 5

[0325] Timer Index Timer 1 5s 2 10s 3 15s

[0326] It should be understood that the number of bits required for transmitting the timer index is usually smaller than the number of bits required for transmitting the above-mentioned duration information. By introducing the timer index, the overhead of the first indication information can be reduced.

[0327] Optionally, the network device may broadcast the default polarization mode of the cell. Accordingly, the terminal device may accept the default polarization mode of the cell broadcast by the network device. For example, the network device may send the default polarization mode of the cell to all terminal devices in the cell through the SIB. In this way, the terminal device may operate in the default polarization mode to communicate with the network device.

[0328] When broadcasting the default polarization mode of the cell, the network device may periodically broadcast the default polarization mode of the cell. The length of the period here may be determined by the network device or agreed upon by the protocol, and is not limited here.

[0329] Furthermore, the network device may determine a default polarization mode according to the polarization modes supported by all terminal devices in the cell, and broadcast the default polarization mode.

[0330] Exemplarily, the network device may determine, based on the polarization modes supported by all terminal devices in the cell, one of the polarization modes supported by all terminal devices in the cell as the default polarization mode, and broadcast the default polarization mode. Alternatively, the network device may determine, based on the polarization modes supported by all terminal devices in the cell, one of the polarization modes supported by terminal devices greater than (or ≥) a first proportion (e.g., 80%) in the cell as the default polarization mode, and broadcast the default polarization mode. The first proportion here may be determined by the network device or agreed upon by the protocol, and is not limited here.

[0331] Furthermore, the network device may periodically determine a default polarization mode according to the polarization modes supported by all terminal devices in the cell, and broadcast the default polarization mode. The length of the period here may be determined by the network device or agreed upon by the protocol, and is not limited here.

[0332] Optionally, the network device may broadcast timer configuration information. The timer configuration information may include a correspondence between at least one timer index and at least one timer, where the timer is used to indicate the duration of the first polarization mode. For example, the network device may send the timer configuration information to all terminal devices in the cell through the SIB.

[0333] The implementation of the timer configuration information may include the following two methods:

[0334] The first type is that the timer configuration information includes a one-to-one correspondence between at least one timer index and at least one timer. As shown in Table 5, the timer indexes include 1, 2, and 3, which respectively correspond to the duration of the first polarization mode of 5s, 10s, and 15s.

[0335] Second, the timer configuration information includes a correspondence between at least one timer index and at least one timer, wherein one or more indexes correspond to one timer.

[0336] Optionally, the network device may determine the default polarization mode of the cell according to the CSI of channels of different polarization modes measured by all terminal devices in the cell. For example, the network device may determine a polarization mode that satisfies condition 1 as the default polarization mode among the polarization modes supported by all terminal devices in the cell. Condition 1 includes: the CSI of the channel of the polarization mode is greater than (or ≥) a CSI threshold.

[0337] Optionally, the network device may determine the timer configuration information based on historical data.

[0338] Furthermore, the network device may periodically determine the default polarization mode of the cell based on the CSI of channels of different polarization modes measured by all terminal devices in the cell. The length of the period here may be determined by the network device or agreed upon by the protocol, and is not limited here.

[0339] Furthermore, the network device may periodically determine the timer configuration information based on the historical data. The length of the period here may be determined by the network device or agreed upon by the protocol, and is not limited here.

[0340] Optionally, the network device may send default polarization indication information to the terminal device, where the default polarization indication information is used to indicate a default polarization mode of the terminal device. The default polarization mode of the terminal device refers to the polarization mode of the terminal device when the network device does not indicate the polarization mode of the terminal device.

[0341] In an embodiment of the present application, when the duration of the first polarization mode indicated by the first indication information expires, the terminal device can switch the polarization mode to the first polarization mode without indicating the duration executed by the previous terminal device, that is, switch to the previous first polarization mode without timer configuration, that is, the terminal device can restore to the previous first polarization mode without timer configuration.

[0342] Alternatively, when the duration of the first polarization mode indicated by the first indication information expires, the terminal device can switch the polarization mode to the default polarization mode of the terminal device indicated by the network device, that is, the terminal device can be restored to the default polarization mode of the terminal device.

[0343] Optionally, when the tenth condition is met, the network device may determine that cross-polarization multiplexing is the first polarization mode; the network device may also obtain the first service demand time of the terminal device, and determine the first indication information according to the first service demand time. The first indication information is used to indicate that the polarization mode of the terminal device is the first polarization mode (that is, cross-polarization multiplexing), and the first indication information is also used to indicate the duration of the first polarization mode, and the duration of the first polarization mode may be greater than (or ≥) the first service demand time.

[0344] The tenth condition may include: the current polarization mode of the terminal device is a single polarization mode, and the throughput of the terminal device is greater than (or ≥) the first throughput threshold. The first service demand time refers to the time during which the throughput of the terminal device continues to be greater than (or ≥) the first throughput threshold. For example, assuming that the time during which the throughput of the terminal device continues to be greater than the first throughput threshold in the future is 10s, the first service demand time is 10s, indicating that the service throughput of the terminal device in the next 10s is large.

[0345] Exemplarily, taking the example that the polarization modes supported by the terminal device include left-hand circular polarization mode, right-hand circular polarization mode, and left-hand right-hand circular polarization cross-polarization multiplexing, if the polarization mode of the terminal device is left-hand circular polarization mode, and the throughput of the terminal device is greater than the first throughput threshold (that is, the tenth condition is satisfied), then the network device can determine that left-hand right-hand circular polarization cross-polarization multiplexing is the first polarization mode. The network device can also obtain the first service demand time of the terminal device. Assuming that the first service demand time is 10s, the network device can determine the first indication information based on the first service demand time, and the first indication information is used to indicate that the polarization mode of the terminal device is left-hand right-hand circular polarization cross-polarization multiplexing, and the first indication information is also used to indicate that the duration of the terminal device working under left-hand right-hand circular polarization cross-polarization multiplexing is 10s.

[0346] In this way, after the duration indicated by the first indication information expires, the terminal device can return from cross-polarization multiplexing to single polarization mode, so as to automatically shut down cross-polarization multiplexing when the first service demand time of the terminal device ends, thereby saving power consumption. In addition, the network device no longer needs to instruct the terminal device to restore to the previous polarization mode through an indication signaling, which can save signaling overhead and avoid the network device waiting for a long time for the terminal device to provide feedback on the indication signaling.

[0347] Optionally, when the eleventh condition is met, the network device may determine that the single polarization mode is the first polarization mode; the network device may also obtain the second service demand time of the terminal device, and determine the first indication information according to the second service demand time. The first indication information is used to indicate that the polarization mode of the terminal device is the first polarization mode (that is, the single polarization mode), and the first indication information is also used to indicate the duration of the first polarization mode, and the duration of the first polarization mode may be greater than (or ≥) the second service demand time.

[0348] The eleventh condition may include: the current polarization mode of the terminal device is cross-polarization multiplexing, and the throughput of the terminal device is less than (or ≤) the third throughput threshold. The second service demand time refers to the time when the throughput of the terminal device is continuously less than (or ≤) the third throughput threshold. For example, assuming that the time when the throughput of the terminal device is continuously less than the first throughput threshold in the future is 10s, the second service demand time is 10s, indicating that the service throughput of the terminal device in the next 10s is small.

[0349] Exemplarily, taking the example that the polarization modes supported by the terminal device include left-hand circular polarization mode, right-hand circular polarization mode, and left-hand right-hand circular polarization cross-polarization multiplexing, if the polarization mode of the terminal device is left-hand right-hand circular polarization cross-polarization multiplexing, and the throughput of the terminal device is less than the third throughput threshold (that is, the eleventh condition is satisfied), then the network device can determine that the left-hand circular polarization mode is the first polarization mode. The network device can also obtain the second service demand time of the terminal device. Assuming that the second service demand time is 10s, the network device can determine the first indication information according to the second service demand time, and the first indication information is used to indicate that the polarization mode of the terminal device is the left-hand circular polarization mode, and the first indication information is also used to indicate that the duration of the terminal device working in the left-hand circular polarization mode is 10s.

[0350] In this way, after the duration indicated by the first indication information expires, the terminal device can return from the single polarization mode to the cross-polarization multiplexing mode, so as to automatically wake up the cross-polarization multiplexing mode when the second service demand time of the terminal device ends, thereby improving the throughput. In addition, the network device no longer needs to instruct the terminal device to restore to the previous polarization mode through an indication signaling, which can save signaling overhead and avoid the network device waiting for a long time for the terminal device to provide feedback on the indication signaling.

[0351] In the embodiment of the present application, the above-mentioned first indication information can be carried in terminal level information.

[0352] The terminal level information can be understood as information sent by the network device to a specific terminal device. The first indication information is carried in the terminal level information, indicating that the device scheduled by the first indication information is a certain terminal device.

[0353] Optionally, the terminal level information may be any one of RRC signaling, MAC CE, CSI-RS, and DCI. In other words, the first indication information may be carried in any one of RRC signaling, MAC CE, CSI-RS, and DCI. The following introduces possible implementation methods:

[0354] When the first indication information is carried in RRC signaling, the first indication information may be carried in UE specific RRC signaling. For example, the first indication information may be carried using one or more bits in the UE specific RRC signaling.

[0355] When the first indication information is carried in a MAC CE, the first indication information may be implemented using a certain index of the MAC CE. For example, the first indication information may be carried using one or more bits corresponding to a certain index of the MAC CE.

[0356] Exemplarily, Table 6 shows the logical channel ID (LCID) values ​​of the downlink shared channel (DL-SCH), and Table 7 shows the LCID values ​​of the uplink shared channel (UL-SCH). Referring to Tables 6 and 7, when the first indication information is used to indicate the first downlink polarization mode of the terminal device, one or more bits in the reserved fields 01011 to 11011 in Table 6 may be used to carry the first indication information; when the first indication information is used to indicate the first uplink polarization mode of the terminal device, one or more bits in the reserved fields 01011 to 11001 in Table 7 may be used to carry the first indication information; when the first indication information is used to indicate the first downlink polarization mode and the first uplink polarization mode of the terminal device, one or more bits in the reserved fields 01011 to 11011 in Table 6 and one or more bits in the reserved fields 01011 to 11001 in Table 7 may be used to carry the first indication information.

[0357] Table 6

[0358] Index LCID value 00000 Common control channel (CCCH) 00001～01010 Logical channel identification 01011～11011 reserved 11100 UE contention resolution identity 11101 Timing advance command 11110 Discontinuous reception (DRX) command 11111 Padding

[0359] Table 7

[0360]

[0361] When the first indication information is carried in DCI, the first indication information can be implemented using control signaling carried by a certain DCI format. For example, DCI formatX can be used to carry the first indication information. Among them, one or more bits in DCI Format1 can be used to carry the first indication information. Among them, the value of "X" in DCI formatX can be 0_0, 0_1, 1_0, 1_1, 2_0, etc. With the development of communication technology, X can also be more values, and the embodiment of the present application does not limit the value of X.

[0362] When the first indication information is carried in CSI-RS, the time-frequency distribution characteristics in CSI-RS can be used to carry the first indication information. For example, the first indication information can be one or more of the carrier frequency and resource units of CSI-RS, and the carrier frequency and one or more of the resource units can be used to indicate the first polarization mode. Among them, the network device can configure the correspondence between the carrier frequency and one or more of the resource units of CSI-RS and multiple polarization modes for the terminal device in advance. When the network device determines that the first indication information is used to indicate the first polarization mode of the terminal device, it can use the carrier frequency and one or more of the resource units of CSI-RS to indicate the first polarization mode of the terminal device. In other words, the carrier frequency and one or more of the resource units of CSI-RS can implicitly indicate the first polarization mode. In the embodiment of the present application, time-frequency can be understood as time domain resources and frequency domain resources.

[0363] Taking the use of CSI-RS resource units to indicate the first polarization mode of the terminal device as an example, assuming that the network device configures the CSI-RS resource units for the terminal device in advance and the correspondence between multiple polarization modes is shown in Table 8, and the network device uses any of the above methods to determine that the first indication information is used to indicate that the polarization mode of the terminal device is left-hand circular polarization, then the network device can use the CSI-RS frequency f0+300 to indicate the first indication information.

[0364] Table 8

[0365] CSI-RS Index Indicated polarization Frequency f0+100 Left-hand right-hand circular polarization cross-polarization multiplexing Frequency f0+200 Right-hand circular polarization Frequency f0+300 Left-hand circular polarization

[0366] For another example, assuming that the network device configures the correspondence between the resource units of the CSI-RS configured for the terminal device in advance and multiple polarization modes as shown in Table 9, and the network device uses any of the above methods to determine that the first indication information is used to indicate that the polarization mode of the terminal device is left-hand circular polarization, then the network device can use the CSI-RS frequency f0+300~400 to implement the first indication information.

[0367] Table 9

[0368] CSI-RS Index Indicated polarization Frequency f0+100~200 Left-hand right-hand circular polarization cross-polarization multiplexing Frequency f0+200~300 Right-hand circular polarization Frequency f0+300~400 Left-hand circular polarization

[0369] In combination with the examples corresponding to Table 8 and Table 9 above, it can be seen that when the resource unit is used to indicate the first polarization mode, the first polarization mode may be indicated by using one frequency or by using a frequency range, and there is no limitation on this.

[0370] In combination with the above implementation of carrying the first indication information, it can be known that the first indication information can be carried using one or more bits in the terminal level information, wherein the value of the one or more bits in the terminal level information can be used to indicate the first polarization mode of the terminal device. As for how to use one or more bits in the terminal level information to carry the first indication information, several possible implementations are introduced below:

[0371] Mode 9: Use 2 bits in the terminal level information to carry the first indication information. The 2 bits may indicate the first polarization mode of the terminal device in the indication mode shown in Table 10 below. The polarization mode of the terminal device remains unchanged, which may mean that the polarization mode of the terminal device is the default polarization mode of the cell, or the polarization mode of the terminal device remains unchanged, and there is no limitation on this.

[0372] Table 10

[0373]

[0374] Among them, in Table 10, the value of the bit carrying the first indication information can indicate the first downlink polarization mode of the terminal device. For example, when the value of the bit carrying the first indication information is 01, it indicates that the downlink polarization mode of the terminal device is left-hand circular polarization. At this time, there is no indication of the uplink polarization mode of the terminal device, which can be considered to be the same as the indication of the downlink polarization mode, that is, in Table 10, the value of the bit carrying the first indication information can implicitly indicate the first uplink polarization mode of the terminal device. For example, when the value of the bit carrying the first indication information is 01, it indicates that the downlink polarization mode of the terminal device is left-hand circular polarization, and implicitly indicates that the uplink polarization mode of the terminal device is left-hand circular polarization.

[0375] Alternatively, 2 bits may be used to indicate the downlink polarization mode of the terminal device, and another 2 bits may be used to indicate the uplink polarization mode of the terminal device. The 2 bits indicating the downlink polarization mode of the terminal device may refer to the above Table 10, and another 2 bits may indicate the first polarization mode of the terminal device in the manner shown in the following Table 11.

[0376] Table 11

[0377]

[0378] It can be understood that method 9 can be applied to the process in which the network device determines the first indication information using the above method 2.

[0379] Mode 10: Use one bit in the terminal level information to carry the first indication information. The one bit may indicate the first polarization mode of the terminal device in the indication mode shown in Table 12 below.

[0380] Table 12

[0381]

[0382] The first single polarization mode is a single polarization mode that the network device dispatches to the terminal device, such as left-hand circular polarization, which is uniformly explained here and will not be repeated below. The cross-polarization multiplexing corresponding to the first single polarization mode refers to two orthogonal single polarization modes in the cross-polarization multiplexing, one of which is the first single polarization mode, which is uniformly explained here and will not be repeated below. For example, when the first single polarization mode is left-hand circular polarization, the cross-polarization multiplexing corresponding to the first single polarization mode is left-hand right-hand circular polarization cross-polarization multiplexing.

[0383] Mode 11: Use 2 bits in the terminal level information to carry the first indication information. The 2 bits may indicate the first polarization mode of the terminal device in the indication mode shown in Table 13 below.

[0384] Table 13

[0385]

[0386] Mode 12: Use 2 bits in the terminal level information to carry the first indication information. The 2 bits may indicate the first polarization mode of the terminal device in the indication mode shown in Table 14 below.

[0387] Table 14

[0388]

[0389] It can be understood that methods 10 to 12 can be applied to the process in which the network device determines the first indication information using the above-mentioned method 3, such as methods 3.1 to 3.4.

[0390] It should be noted that the above implementation method of using one or more bits in the terminal level information to carry the first indication information is only an example and is not limited here. It can be adjusted according to needs in actual applications, and the adjusted implementation methods are not listed one by one here.

[0391] In a possible implementation, the first indication information may be used to indicate that the polarization mode of the first resource is the first polarization mode, and the first resource may include any one of a time-frequency domain resource, a time domain resource, and a frequency domain resource.

[0392] Taking the example that the first resource includes time-frequency domain resources, UE specific RRC, MAC CE, and DCI may be used to jointly indicate that the polarization mode of the first resource is the first polarization mode.

[0393] For example, DCI may be used to indicate the time-frequency domain resources of the terminal device, and UE-specific RRC may be used to indicate that the polarization mode of the time-frequency domain resources is the first polarization mode.

[0394] For another example, DCI may be used to indicate the time-frequency domain resources of the terminal device, and MAC CE may be used to indicate that the polarization mode of the time-frequency domain resources is the first polarization mode.

[0395] Of course, physical resources with different polarization directions but the same time-frequency may also be regarded as different physical resources, and indicated by using any one of UE specific RRC, MAC CE, and DCI.

[0396] In other words, through the first indication information, for a time-frequency domain resource, the network device can divide the time-frequency domain resource into time-frequency domain resources of different polarization modes. For example, for an RE, the network device can divide the RE into a left-hand circularly polarized RE and a right-hand circularly polarized RE, and schedule the left-hand circularly polarized RE and the right-hand circularly polarized RE to the same UE or different UEs. In this way, the network device can flexibly schedule resources to different REs in the time domain, frequency domain, and polarization mode domain, improve scheduling flexibility and spectrum efficiency, and meet different business needs.

[0397] When the first resource includes a time domain resource or a frequency domain resource, the indication method of the first indication information is the same and will not be repeated here.

[0398] Take the picture as an example, Figure 7 A schematic diagram of resource mapping in a certain beam combined with a polarization mode provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, Figure 7 Each grid in the coordinate system represents an RE. The network device can allocate the LHCP and RHCP of the same RE to the same UE through radio resource management (RRM), or can allocate the LHCP and RHCP of the same RE to different UEs. For example, Figure 7 In the figure, the RE labeled 1 (denoted as RE1) and the RE labeled 2 (denoted as RE2), the time domain and frequency domain positions of RE1 and RE2 are the same, but the polarization mode of RE1 is left-hand circular polarization, and the polarization mode of RE2 is right-hand circular polarization. RE1 is scheduled to UE2, and RE2 is scheduled to UE5. Figure 7 The scheduling of other REs is the same as that of RE1 and RE2, and will not be repeated here.

[0399] It should be noted that the above description uses the minimum unit RE of resource scheduling as an example. In an actual system, the granularity of resource scheduling may be larger than RE, such as RE block or RE group, which will not be elaborated here.

[0400] Figure 8 A schematic diagram of forming a virtual sub-beam in space with UE as a unit in a certain beam through RRM provided in an embodiment of the present application, such as Figure 8 As shown, it can be seen that through the first indication information and RRM, it is possible to schedule virtual sub-beams with different physical resources for different UEs within a beam, and the time-frequency domain resources of these virtual sub-beams can be the same or different. The formed virtual sub-beams change with the resource scheduling process of the UE. In this way, the embodiment of the present application flexibly schedules resources to different REs in the time domain, frequency domain and polarization domain by adding a polarization mode domain (or simply referred to as the polarization domain) in the time domain and frequency domain, thereby improving scheduling flexibility and spectrum efficiency and meeting different business needs.

[0401] It should be noted that a network device (such as a satellite) can simultaneously enable two orthogonal polarization directions for a beam, but may not instruct all UEs within the beam range to use cross-polarization multiplexing.

[0402] In addition, if Fig. 9 As shown, different SSBs (or bandwidth parts (BWP)) in a cell correspond to different frequency domain resources. Fig. 9 At least one beam in the cell shown uses cross-polarization multiplexing. For beams using horizontal and vertical cross-polarization multiplexing, Fig. 9For example, in the coverage of the beam represented by SSB#3, if UE1 works under horizontal and vertical cross-polarization multiplexing, then the horizontal polarization resources and vertical polarization resources of a resource block (RB) used by UE1 in the beam represented by SSB#3 are occupied by UE1. For other UEs, if UE2 works in the horizontal polarization mode, then the horizontal polarization mode of an RB used by UE2 in the beam represented by SSB#3 is occupied by UE2, and the vertical polarization mode of the RB can be allocated to another UE (such as UE3). Among them, the polarization modes and time-frequency domain resource indication methods of the above-mentioned UE1~UE3 can refer to the above-mentioned use of UE specific RRC, MAC CE, and DCI to jointly indicate that the polarization mode of the first resource is the first polarization mode. In this way, the network device can realize irregular UE-level virtual sub-beams in the same beam through the first indication information and RRM, so that the UE can use one RB in cross-polarization multiplexing to improve throughput; and enable some UEs to flexibly use the single polarization method in cross-polarization multiplexing to share RBs, avoid interference between UEs, and improve resource utilization.

[0403] Further, the first resource may include a first uplink resource, and / or a first downlink resource. For the first resource including a first uplink resource, the first indication information may be used to indicate that the polarization mode of the first uplink resource of the terminal device is the first uplink polarization mode; for the first resource including a first downlink resource, the first indication information may be used to indicate that the polarization mode of the first downlink resource of the terminal device is the first downlink polarization mode; for the first resource including a first uplink resource and a first downlink resource, the first indication information may be used to indicate that the polarization mode of the first uplink resource of the terminal device is the first uplink polarization mode, and the polarization mode of the first downlink resource is the first downlink polarization mode.

[0404] exist Figure 6 In the communication method shown, the first indication information can schedule the polarization mode of the terminal device, and it is carried in terminal level information, such as RRC signaling, DCI, MAC CE, etc. In this way, the network device can schedule the polarization mode of the terminal device at the terminal level, that is, the network device can adjust the polarization mode of a certain terminal device to make the scheduling of the polarization mode of the terminal device more flexible and the scheduling granularity finer, thereby improving the spectrum efficiency.

[0405] The present application provides another embodiment to implement scheduling of the polarization mode of a terminal device at the beam level.

[0406] Please refer to Fig.10 , Fig.10 The communication method of the present invention is shown in FIG. Figure 2 . The communication method can be applied to the above-mentioned communication system, and can be executed by a terminal device or a network device in the above-mentioned communication system. The communication method can schedule the polarization mode of the terminal device at the beam level, that is, the network device can adjust the polarization mode of the terminal device in a certain beam, so that the scheduling of the polarization mode of the terminal device is more flexible and the scheduling granularity is finer, thereby improving the spectrum efficiency. The method may include S1001 to S1003, which are explained in turn below.

[0407] S1001, the network device determines fourth indication information.

[0408] Among them, the fourth indication information is used to indicate the second polarization mode of the first beam; or in other words, the fourth indication information can be used to indicate that the polarization mode of the first beam is switched to the second polarization mode; or, the fourth indication information can be used to indicate that the first beam works in the second polarization mode; or, the fourth indication information can be used to indicate that the polarization mode of the first beam is the second polarization mode; or, the fourth indication information can be used to indicate that the polarization mode of the terminal device in the first beam is the second polarization mode. It should be pointed out that, unless otherwise specified, the meanings to be expressed by these expressions of the fourth indication information are consistent and can be mixed. The first beam here can be any beam in the beam set of the network device, including an uplink beam, and / or a downlink beam.

[0409] The second polarization mode may include any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. Among them, linear polarization may include any one of horizontal polarization, vertical polarization, +45° polarization, and -45° polarization; cross-polarization multiplexing may include any one of horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, and left-hand right-hand circular polarization cross-polarization multiplexing.

[0410] S1002: The network device sends fourth indication information to the terminal device in the first beam. Correspondingly, the terminal device in the first beam receives the fourth indication information from the network device.

[0411] S1003: The terminal device in the first beam communicates with the network device based on the second polarization mode.

[0412] Among them, the terminal device in the first beam communicates with the network device based on the second polarization mode, which can be understood as: the terminal device in the first beam operates in the second polarization mode, or it can be understood as the terminal device in the first beam switches the polarization mode to the second polarization mode.

[0413] Exemplarily, if the second polarization mode of the first beam indicated by the fourth indication information is left-hand circular polarization, then the terminal device in the first beam can operate in the polarization mode of left-hand circular polarization to achieve communication with the network device. If the second polarization mode of the first beam indicated by the fourth indication information is left-hand right-hand circular polarization cross-polarization multiplexing, then the terminal device in the first beam can operate in the polarization mode of left-hand right-hand circular polarization cross-polarization multiplexing to achieve communication with the network device.

[0414] Among them, in S1001, the network device determines the implementation method of the fourth indication information, which may include the following methods 13 to 18, which are described below respectively:

[0415] Method 13: The network device determines the fourth indication information according to the polarization mode supported by all terminal devices in the first beam.

[0416] Optionally, the network device may determine a polarization mode as the second polarization mode from polarization modes supported by all terminal devices in the first beam, thereby determining the fourth indication information.

[0417] Specifically, the network device may determine at least one polarization mode supported by all terminal devices in the first beam, and determine a polarization mode in the at least one polarization mode as the second polarization mode.

[0418] In mode 13, before the network device determines the fourth indication information, it can also obtain the polarization modes supported by all terminal devices in the first beam. The network device can sequentially obtain the polarization modes supported by each terminal device in the first beam to obtain the polarization modes supported by all terminal devices in the first beam. The network device can obtain the polarization modes supported by a terminal device in the first beam by referring to the above steps 1.1 to 1.2, which will not be repeated here.

[0419] Method 14: The network device determines the fourth indication information based on the CSI of channels of different polarization modes measured by all terminal devices in the first beam.

[0420] Optionally, the network device may determine at least one available polarization mode based on the CSI of channels of different polarization modes measured by all terminal devices in the first beam; then determine one available polarization mode as the second polarization mode from the at least one available polarization mode, and generate fourth indication information.

[0421] In a possible implementation, if the twentieth condition is met, the network device may determine that polarization mode C is an available polarization mode. The twentieth condition includes: in a set of different polarization modes measured by all terminal devices in the first beam, the channel quality corresponding to the polarization mode with the best channel quality (referred to as polarization mode C) is better than the fifth threshold.

[0422] In this way, the network device can determine the polarization mode with the best CSI of a channel from the set of different polarization modes measured by all terminal devices in the first beam as the polarization mode of the first beam, thereby improving the beam quality.

[0423] In method 14, before the network device determines the fourth indication information, it can also obtain the CSI of channels of different polarization modes measured by all terminal devices in the first beam. Among them, the network device can sequentially obtain the CSI of channels of different polarization modes measured by each terminal device in the first beam, and obtain the CSI of channels of different polarization modes measured by all terminal devices in the first beam. The network device obtains the CSI of channels of different polarization modes measured by a terminal device in the first beam, which can refer to the above steps 2.1 to 2.3 and will not be repeated here.

[0424] Method 15: The network device determines the fourth indication information according to the service requirements of all terminal devices in the first beam.

[0425] Optionally, the network device may determine at least one available polarization mode according to the service requirements of all terminal devices in the first beam; then determine one available polarization mode as the second polarization mode from the at least one available polarization mode, and generate fourth indication information.

[0426] In one possible implementation, if the twenty-first condition is met, the network device may determine that cross-polarization multiplexing is an available polarization mode. The twenty-first condition may include: the throughput of terminal devices exceeding (or ≥) the second proportion of all terminal devices in the first beam is greater than (or ≥) the throughput threshold. In this way, the network device can enable cross-polarization multiplexing for the terminal devices in the first beam when the service demand in the first beam is large, thereby improving the throughput of the terminal devices in the first beam.

[0427] In another possible implementation, if the twenty-second condition is met, the network device may determine that the single polarization mode is an available polarization mode. The twenty-second condition may include: the throughput of terminal devices exceeding (or ≥) the third proportion of all terminal devices in the first beam is less than (or ≤) the throughput threshold. In this way, the network device can turn off cross-polarization multiplexing for the terminal devices in the first beam when the service demand in the first beam is small, thereby saving power consumption of the terminal devices in the first beam.

[0428] In mode 15, before determining the fourth indication information, the network device may also obtain the service requirements of all terminal devices in the first beam. The network device may sequentially obtain the service requirements of each terminal device in the first beam to obtain the service requirements of all terminal devices in the first beam.

[0429] Method 16: The network device determines the fourth indication information according to the polarization mode expected by all terminal devices in the first beam.

[0430] Optionally, the network device may determine at least one available polarization mode according to the polarization modes expected by all terminal devices in the first beam; then determine one available polarization mode as the second polarization mode among the at least one available polarization mode, and generate fourth indication information.

[0431] The network device determines, according to the polarization modes expected by all terminal devices in the first beam, an implementation mode of at least one available polarization mode, which may include:

[0432] Mode 16.1: If the twenty-third condition is met, the network device may determine that polarization mode D is an available polarization mode. The twenty-third condition may include: among all terminal devices in the first beam, more than (or ≥) a fourth proportion of terminal devices expect the same polarization mode (referred to as polarization mode D).

[0433] In this way, the network device can use the polarization mode expected by most terminal devices as the polarization mode of the first beam among the set of polarization modes expected by all terminal devices in the first beam, thereby improving the beam quality.

[0434] In mode 16, before the network device determines the fourth indication information, it can also obtain the polarization mode expected by all terminal devices in the first beam. The network device can sequentially obtain the polarization mode expected by each terminal device in the first beam to obtain the polarization mode expected by all terminal devices in the first beam.

[0435] Method 17: The network device determines the fourth indication information according to the weather conditions within the coverage area of ​​the first beam.

[0436] Optionally, the network device may determine at least one available polarization mode according to weather conditions within the coverage of the first beam; then determine one available polarization mode among the at least one available polarization mode as the second polarization mode, and generate fourth indication information.

[0437] The network device determines, according to the weather conditions within the coverage of the first beam, an implementation method of at least one available polarization mode, which may include:

[0438] Mode 17.1: If the twenty-fourth condition is met, the network device may determine that the single polarization mode is an available polarization mode. The fourteenth condition may include: the average rainfall (snow) amount within the coverage area of ​​the first beam is greater than (or ≥) the rainfall (snow) threshold, and / or the average cloud thickness is greater than (or ≥) the thickness threshold.

[0439] In this way, when the weather conditions are bad within the coverage area of ​​the first beam of the first beam, the network device can adjust the polarization mode of the first beam to a single polarization mode, thereby reducing signal interference and improving communication quality.

[0440] In mode 17, before the network device determines the fourth indication information, mode 17 may further include: the network device obtains the weather conditions within the first beam coverage range in the first beam. The network device may directly obtain the weather conditions through meteorological information of a certain spatial scale within the beam coverage range.

[0441] Method 18: The network device determines the fourth indication information according to the crosstalk between the orthogonal polarization channels of all terminal devices in the first beam.

[0442] Optionally, the network device can determine at least one available polarization mode based on the crosstalk between all orthogonal polarization channels in the first beam; and then use one or more of the above-mentioned methods 13 to 17 to determine one available polarization mode as the second polarization mode in the at least one available polarization mode, and generate fourth indication information.

[0443] In one possible implementation, if the twenty-fifth condition is met, the network device may determine that the single polarization mode is an available polarization mode, and determine that the cross-polarization multiplexing is an unavailable polarization mode. Among them, the twenty-fifth condition may include: the crosstalk value between the orthogonal polarization channels of terminal devices exceeding (or ≥) the sixth proportion of all terminal devices in the first beam is greater than (or ≥) the first crosstalk threshold. In this way, the network device can limit the polarization mode of the first beam to a single polarization mode when the crosstalk between the orthogonal polarization channels between most terminal devices and the network device in the first beam is serious, thereby reducing signal interference and improving communication quality.

[0444] In another possible implementation, if the twenty-sixth condition is met, the network device may determine that cross-polarization multiplexing is an available polarization mode. The twenty-sixth condition may include: the crosstalk value between the orthogonal polarization channels of terminal devices exceeding (or ≥) the seventh proportion of all terminal devices in the first beam is less than (or ≤) the first crosstalk threshold. In this way, the network device can adjust the polarization mode of the first beam to cross-polarization multiplexing when the crosstalk between the orthogonal polarization channels between most terminal devices and the network device in the first beam is not serious, thereby improving the throughput.

[0445] In mode 18, before the network device determines the fourth indication information, it can also obtain the crosstalk between the orthogonal polarization channels between all terminal devices and the network device in the first beam. The network device can sequentially obtain the crosstalk between the orthogonal polarization channels between each terminal device and the network device in the first beam, and obtain the crosstalk between the orthogonal polarization channels between all terminal devices and the network device in the first beam.

[0446] It can be understood that method 18 can be implemented in combination with one or more of the above-mentioned methods 13 to 17. For relevant combination methods, refer to the examples including method 18 in the following examples 14 to 26.

[0447] In some possible embodiments, when the trigger condition is met, the network device may determine the fourth indication information according to the trigger condition. The trigger condition may include any one of the 20th to 26th conditions in the above-mentioned methods 14 to 18, and the trigger condition may trigger the network device to schedule the polarization mode of the first beam. In other words, if any one of the above-mentioned 20th to 26th conditions is met, the network device may determine the fourth indication information according to the process corresponding to the met condition, thereby scheduling the polarization mode of the first beam.

[0448] In this way, the network device can promptly discover the problem of the polarization mode of the first beam, and promptly adjust the polarization mode of the first beam, so that the polarization mode scheduling of the first beam is more flexible and the scheduling granularity is finer, thereby improving the spectrum efficiency.

[0449] It is understood that the above-mentioned methods 13 to 18 can be implemented separately or in combination, and the embodiments of the present application do not limit this. The following examples illustrate the implementation methods of the combination of methods 13 to 15 and methods 17 and 18:

[0450] Example 3: When methods 13, 14, 15, 17, and 18 are implemented in combination, the network device can determine a polarization mode as the second polarization mode from the polarization modes supported by all terminal devices in the first beam based on the CSI of channels of different polarization modes measured by all terminal devices in the first beam, the service requirements of all terminal devices in the first beam, the weather conditions between all terminal devices in the first beam and the network device, and the crosstalk between orthogonal polarization channels of all terminal devices in the first beam, thereby determining the fourth indication information.

[0451] Among them, the network device determines a polarization mode as the second polarization mode from the polarization modes supported by all terminal devices in the first beam according to the CSI of channels of different polarization modes measured by all terminal devices in the first beam, the service requirements of all terminal devices in the first beam, the weather conditions between all terminal devices in the first beam and the network device, and the crosstalk conditions between orthogonal polarization channels of all terminal devices in the first beam. The method may include: the network device determines at least one available polarization mode (recorded as the first set) according to the CSI of channels of different polarization modes measured by all terminal devices in the first beam, the network device determines at least one available polarization mode (recorded as the second set) according to the service requirements of all terminal devices in the first beam, the network device determines at least one available polarization mode (recorded as the third set) according to the weather conditions between all terminal devices in the first beam and the network device, and the network device determines at least one available polarization mode (recorded as the fourth set) according to the crosstalk conditions between orthogonal polarization channels of all terminal devices in the first beam; among the polarization modes included in the first set to the fifth set, one of the polarization modes supported by all terminal devices in the first beam is used as the second polarization mode.

[0452] Among them, the network equipment can determine at least one available polarization mode based on different information (including CSI of channels of different polarization modes measured by all terminal devices in the first beam, service requirements of all terminal devices in the first beam, weather conditions between all terminal devices in the first beam and the network equipment, and crosstalk conditions between orthogonal polarization channels of all terminal devices in the first beam). The process of the network equipment determining at least one available polarization mode can be referred to the above-mentioned methods 14 to 18, which will not be repeated here.

[0453] In other words, when the above-mentioned multiple methods are implemented in combination, the network equipment can determine multiple polarization mode sets according to different information respectively, and among the polarization modes included in these multiple polarization mode sets, one of the polarization modes supported by all terminal devices in the first beam can be used as the second polarization mode.

[0454] Example 4: When method 13 and method 14 are implemented in combination, the network device can determine a polarization mode as the second polarization mode from the polarization modes supported by all terminal devices in the first beam based on the CSI of channels of different polarization modes measured by all terminal devices in the first beam, thereby determining the fourth indication information.

[0455] It can be understood that when methods 1 to 3 are implemented in combination with methods 5 and 6, any multiple of them can be selected for implementation in combination. The specific implementation process can refer to the above examples and will not be listed one by one here.

[0456] In combination with the description of the above-mentioned methods 13 to 18, it can be known that the network device can determine the fourth indication information according to one or more of the polarization modes supported by all terminal devices in the first beam, the channel state information of channels of different polarization modes measured by all terminal devices in the first beam, the service requirements of all terminal devices in the first beam, the polarization modes expected by all terminal devices in the first beam, the weather conditions between all terminal devices in the first beam and the network device, and the crosstalk conditions between all orthogonal polarization channels in the first beam. In other words, the fourth indication information can be determined according to one or more of the following: the polarization modes supported by all terminal devices in the first beam, the channel state information of channels of different polarization modes measured by all terminal devices in the first beam, the service requirements of all terminal devices in the first beam, the polarization modes expected by all terminal devices in the first beam, the weather conditions between all terminal devices in the first beam and the network device, and the crosstalk conditions between all orthogonal polarization channels in the first beam.

[0457] It should be understood that in the above-mentioned methods 13 to 18, the network device can combine multiple information to determine a polarization mode that is more suitable for all terminal devices in the first beam, and schedule the polarization mode for all terminal devices in the first beam through the fourth indication information. On the one hand, it can enable all terminal devices in the first beam to operate under a better polarization mode, thereby improving communication quality and reducing power consumption. On the other hand, it can make the polarization mode scheduling of all terminal devices in the first beam more flexible and the scheduling granularity finer, thereby improving spectrum efficiency.

[0458] Optionally, the fourth indication information may also be used to indicate a duration of the second polarization mode.

[0459] The duration of the second polarization mode can be understood as the length of time that the polarization mode of the first beam continues to be the second polarization mode. The duration of the second polarization mode can also be called a timer of the second polarization mode. When the timer expires, the first beam can be restored to the default polarization mode.

[0460] In this way, the network device can indicate the duration of operation of all terminal devices in the first beam in the second polarization mode. After the duration indicated by the fourth indication information expires, all terminal devices in the first beam can be restored to the previous polarization mode. In this way, the network device no longer needs to instruct the terminal devices in the first beam to restore to the previous polarization mode through an indication signaling, which can save signaling overhead. In addition, the flexibility of scheduling the polarization mode of the terminal device can be further improved.

[0461] The fourth indication information indicates the duration of the second polarization mode. Figure 6The description of “the implementation method of the first indication information indicating the duration of the first polarization mode” in the illustrated method embodiment, such as mode 7 and mode 8, will not be repeated here.

[0462] Optionally, the network device may broadcast timer configuration information. The timer configuration information may include a correspondence between at least one timer index and at least one timer, where the timer refers to the duration of the second polarization mode. For example, the network device may send the timer configuration information to all terminal devices in the cell through the SIB.

[0463] The implementation of the configuration information of the timer can refer to the above Figure 6 The description on “implementation method of timer configuration information” in the illustrated method embodiment will not be repeated here.

[0464] Optionally, the fourth indication information may include an index of an SSB, and the index of the SSB corresponds to the second polarization mode.

[0465] Among them, the index of the SSB configured by the network device in the first beam is consistent. In this way, when each terminal device in the first beam receives the fourth indication information, it can be determined that the fourth indication information indicates that the polarization mode of the first beam is the second polarization mode according to the correspondence between the index of the SSB and the second polarization mode, so that the network device can switch the polarization mode of the first beam to the second polarization mode, that is, the polarization mode of the terminal device in the first beam can be switched to the second polarization mode, so that the polarization mode of the terminal device in a certain beam can be scheduled at the beam level.

[0466] Specifically, the network device may configure the correspondence between the index of at least one SSB and at least one polarization mode for all terminal devices in the cell in advance. For example, the network device configures the correspondence between the index of at least one SSB and at least one polarization mode for all terminal devices in the cell in advance: the index of the even-numbered SSB indicates that the first polarization mode is left-hand circular polarization, and the index of the odd-numbered SSB indicates that the first polarization mode is right-hand circular polarization. Then, the network device may configure the index of the SSB of the first beam to 1, and send fourth indication information to the terminal devices in the first beam, and the index of the SSB included in the fourth indication information is SSB1, thereby indicating that the polarization mode of the terminal devices in the first beam is switched to right-hand circular polarization.

[0467] Optionally, the fourth indication information can be carried in any one of RRC, DCI or MAC CE, without limitation.

[0468] Optionally, the fourth indication information may include an index of a BWP, where the index of the BWP corresponds to the second polarization mode.

[0469] Regarding the implementation method of the BWP index corresponding to the second polarization mode, you can refer to the implementation method of the SSB index corresponding to the second polarization mode mentioned above, which will not be repeated here.

[0470] Optionally, the fourth indication information may include a time-frequency position of a CSI-RS, and the time-frequency position of the CSI-RS corresponds to the second polarization mode.

[0471] Regarding the implementation method of the time-frequency position of the CSI-RS corresponding to the second polarization mode, reference may be made to the implementation method of the index of the SSB corresponding to the second polarization mode described above, which will not be repeated here.

[0472] Optionally, the fourth indication information may include a measurement identifier of the CSI-RS, where the measurement identifier of the CSI-RS corresponds to the second polarization mode. The measurement identifier may also be referred to as an identifier, which is not limited thereto.

[0473] Regarding the implementation method of the CSI-RS measurement identifier corresponding to the second polarization mode, reference may be made to the implementation method of the SSB index corresponding to the second polarization mode described above, which will not be repeated here.

[0474] Optionally, Fig.10 The communication method shown may also include: the network device sends a first mapping relationship to the terminal device. The first mapping relationship may include a mapping relationship between an index of at least one SSB and at least one polarization mode; or, the first mapping relationship may include a mapping relationship between a time-frequency position of at least one CSI-RS and at least one polarization mode.

[0475] In actual application, the correspondence between the SSB index and the second polarization mode can be adjusted according to needs. For example, SSB3 indicates the second polarization mode at the first moment, and SSB4 indicates the second polarization mode after a period of time. This embodiment of the present application is not limited to this.

[0476] The first mapping relationship may be carried in SIB signaling.

[0477] exist Fig.10 In the communication method shown, the fourth indication information can schedule the polarization mode of the terminal device, and it is carried in beam level information, such as a reference signal. In this way, the network device can schedule the polarization mode of the terminal device at the beam level, that is, the network device can adjust the polarization mode of the terminal device within a certain beam, so that the scheduling of the polarization mode of the terminal device is more flexible and the scheduling granularity is finer, thereby improving the spectrum efficiency.

[0478] The present application provides another embodiment, which can implement scheduling of the polarization mode of the terminal device at the cell level.

[0479] Please refer to Fig.11 , Fig.11 The communication method of the present invention is shown in FIG. Fig.11 The communication method can be applied to the above communication system and can be executed by a terminal device or a network device in the above communication system. The communication method can schedule the polarization mode of the terminal device at the cell level, that is, the network device can adjust the polarization mode of the terminal device in the cell. The method may include S1101 to S1103, which are described in sequence below.

[0480] S1101, the network device determines fifth indication information.

[0481] The fifth indication information is used to indicate the third polarization mode of the first cell; or in other words, the fifth indication information can be used to indicate that the polarization mode of the first cell is switched to the third polarization mode; or, the fifth indication information can be used to indicate that the first cell operates in the third polarization mode; or, the fifth indication information can be used to indicate that the polarization mode of the first cell is the third polarization mode. It should be pointed out that, unless otherwise specified, the meanings of these expressions of the fifth indication information are consistent and can be used interchangeably. The first cell here can be a cell of a network device.

[0482] The third polarization mode may include any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. Among them, linear polarization may include any one of horizontal polarization, vertical polarization, +45° polarization, and -45° polarization; cross-polarization multiplexing may include any one of horizontal vertical cross-polarization multiplexing, ±45° cross-polarization multiplexing, and left-hand right-hand circular polarization cross-polarization multiplexing.

[0483] S1102, the network device sends fifth indication information to the terminal device in the first cell. Correspondingly, the terminal device in the first cell receives the fifth indication information from the network device.

[0484] S1103, the terminal device in the first cell communicates with the network device based on the third polarization mode.

[0485] Among them, the terminal device in the first cell communicates with the network device based on the third polarization mode, which can be understood as: the terminal device in the first cell operates in the third polarization mode, or it can be understood as the terminal device in the first cell switches the polarization mode to the third polarization mode.

[0486] Exemplarily, if the third polarization mode indicated by the fifth indication information is left-hand circular polarization, the terminal device in the first cell can operate in the polarization mode of left-hand circular polarization to achieve communication with the network device. If the third polarization mode indicated by the fifth indication information is left-hand right-hand circular polarization cross-polarization multiplexing, the terminal device in the first cell can operate in the polarization mode of left-hand right-hand circular polarization cross-polarization multiplexing to achieve communication with the network device.

[0487] Among them, in S1101, the network device determines the implementation method of the fifth indication information, which may include the following methods 19 to 24.

[0488] Method 19: The network device determines the fifth indication information according to the polarization modes supported by all terminal devices in the first cell.

[0489] In method 20, the network device determines the fifth indication information according to the CSI of channels of different polarization modes measured by all terminal devices in the first cell.

[0490] In method 20, the network device can determine a polarization mode with the best CSI of a channel from a set of different polarization modes measured by all terminal devices in the first cell as the polarization mode of the first cell, thereby improving the communication quality of the cell.

[0491] Method 21: The network device determines the fifth indication information according to the service requirements of all terminal devices in the first cell.

[0492] In mode 21, the network device can enable cross-polarization multiplexing for the terminal device in the first cell when the service demand in the first cell is large, thereby improving the throughput of the terminal device in the first cell. Also, the network device can disable cross-polarization multiplexing for the terminal device in the first cell when the service demand in the first cell is small, thereby saving power consumption of the terminal device in the first cell.

[0493] Method 22: The network device determines the fifth indication information according to the polarization mode expected by all terminal devices in the first cell.

[0494] In method 22, the network device can use the polarization mode expected by most terminal devices as the polarization mode of the first cell among the set of polarization modes expected by all terminal devices in the first cell, thereby improving the communication quality of the cell.

[0495] Method 23: The network device determines the fifth indication information according to the weather conditions between all terminal devices and the network device in the first cell.

[0496] In method 23, when the weather conditions between most terminal devices and the network device in the first cell are bad, the network device can adjust the polarization mode of the first cell to a single polarization mode, thereby reducing signal interference and improving communication quality.

[0497] Mode 24: The network device determines the fifth indication information according to the crosstalk between the orthogonal polarization channels of all terminal devices in the first cell.

[0498] In mode 24, when the crosstalk between the orthogonal polarization channels between most terminal devices and network devices in the first cell is serious, the network device can limit the polarization mode of the first cell to a single polarization mode, thereby reducing signal interference and improving communication quality. And, when the crosstalk between the orthogonal polarization channels between most terminal devices and network devices in the first cell is not serious, the network device can adjust the polarization mode of the first cell to cross-polarization multiplexing, thereby improving throughput. The specific implementation method of determining the fifth indication information in the above-mentioned modes 19 to 24 can refer to the method of determining the fourth indication information in the above-mentioned modes 13 to 18, the difference being that the fourth indication information is determined based on the relevant parameters within the beam range, and the fifth indication information is determined based on the relevant parameters within the cell range. It will not be repeated here. For example, the implementation process of mode 20 can refer to the above-mentioned mode 14, replacing the "first beam" in mode 14 with "first cell", the "second polarization mode" with "third polarization mode", and the "fourth indication information" with "fifth indication information".

[0499] In some possible embodiments, when the trigger condition is met, the network device may determine the fifth indication information according to the trigger condition. The trigger condition may include any one of the above-mentioned methods 20 to 24, and the trigger condition may trigger the network device to schedule the polarization mode of the first cell. In other words, if any one of the conditions in methods 20 to 24 is met, the network device may determine the fifth indication information according to the process corresponding to the met condition, thereby scheduling the polarization mode of the first cell.

[0500] It is understandable that the above-mentioned methods 19 to 24 can be implemented separately or in combination, and the present application embodiment does not limit this. Similarly, the specific examples can refer to the above-mentioned examples 3 to 4, which will not be repeated here.

[0501] In combination with the description of the above-mentioned methods 19 to 24, it can be known that the network device can determine the fifth indication information according to one or more of the polarization modes supported by all terminal devices in the first cell, the channel state information of channels of different polarization modes measured by all terminal devices in the first cell, the service requirements of all terminal devices in the first cell, the polarization modes expected by all terminal devices in the first cell, the weather conditions between all terminal devices in the first cell and the network device, and the crosstalk conditions between all orthogonal polarization channels in the first cell. In other words, the fifth indication information can be determined according to one or more of the following: the polarization modes supported by all terminal devices in the first cell, the channel state information of channels of different polarization modes measured by all terminal devices in the first cell, the service requirements of all terminal devices in the first cell, the polarization modes expected by all terminal devices in the first cell, the weather conditions between all terminal devices in the first cell and the network device, and the crosstalk conditions between all orthogonal polarization channels in the first cell.

[0502] It should be understood that in the above-mentioned methods 19 to 24, the network equipment can combine multiple information to determine a polarization mode that is more suitable for all terminal devices in the first cell, and schedule the polarization mode for all terminal devices in the first cell through the fifth indication information. On the one hand, it can enable all terminal devices in the first cell to operate under a better polarization mode, thereby improving communication quality, reducing power consumption, and improving spectrum efficiency.

[0503] Optionally, the fifth indication information may also be used to indicate a duration of the third polarization mode.

[0504] The duration of the third polarization mode can be understood as: the length of time that the polarization mode of the first cell continues to be the third polarization mode. The duration of the third polarization mode can also be called a timer of the third polarization mode. When the timer expires, the first cell can be restored to the default polarization mode.

[0505] In this way, the network device can indicate the duration of operation of all terminal devices in the first cell in the third polarization mode. After the duration indicated by the fifth indication information expires, all terminal devices in the first cell can be restored to the previous polarization mode. In this way, the network device no longer needs to instruct the terminal devices in the first cell to restore to the previous polarization mode through an indication signaling, which can save signaling overhead. In addition, the flexibility of scheduling the polarization mode of the terminal device can be further improved.

[0506] The fifth indication information indicates the duration of the third polarization mode. Figure 6 The description of “the implementation method of the first indication information indicating the duration of the first polarization mode” in the illustrated method embodiment, such as mode 7 and mode 8, will not be repeated here.

[0507] Optionally, the network device may broadcast timer configuration information. The timer configuration information may include a correspondence between at least one timer index and at least one timer, where the timer refers to the duration of the third polarization mode. For example, the network device may send the timer configuration information to all terminal devices in the cell through the SIB.

[0508] The implementation of the configuration information of the timer can refer to the above Figure 6 The description on “implementation method of timer configuration information” in the illustrated method embodiment will not be repeated here.

[0509] In this embodiment of the present application, the fifth indication information may be carried in cell-level information.

[0510] The cell-level information can be understood as information sent by the network device to the terminal device of a certain cell. Except for the terminal device of the cell, other terminal devices will not successfully decode the terminal-level information. The fifth indication information is carried in the cell-level information, indicating that the device scheduled by the fifth indication information is a terminal device in a certain cell.

[0511] Optionally, the cell level information may be SIB. In other words, the fifth indication information may be carried in SIB.

[0512] Optionally, one or more bits in the SIB may be used to carry the fifth indication information. The values ​​of one or more bits in the SIB may be used to indicate the third polarization mode. Several possible implementations are described below:

[0513] Example 5: Use 4 bits in the SIB to carry the fifth indication information. The 4 bits may indicate the third polarization mode in the indication manner shown in Table 15 below.

[0514] Table 15

[0515]

[0516] The SIBx message format of Example 5 may be as follows:

[0517]

[0518] Example 6: Use 3 bits in the SIB to carry the fifth indication information. The 3 bits may indicate the third polarization mode in the manner shown in Table 16 below. In Table 16, x1 and x2 of SIBx1 and SIBx2 are different. When the SIBx2 field does not exist in the SIB, it is implicitly indicated that the uplink polarization mode is the same as the downlink polarization mode.

[0519] Table 16

[0520]

[0521]

[0522] The SIBx message format of Example 6 may be as follows:

[0523]

[0524] Example 7: Use 4 bits in the SIB to carry the fifth indication information. The 4 bits may indicate the third polarization mode in the indication manner shown in Table 17 below.

[0525] Table 17

[0526]

[0527] The SIBx message format of Example 7 may be as follows:

[0528]

[0529] Optionally, it can be seen that the 4 bits in the above Table 22 can also indicate more polarization modes, as shown in the following Table 18.

[0530] Table 18

[0531]

[0532] exist Fig.11 In the communication method shown, the fifth indication information can schedule the polarization mode of the terminal device, and it is carried in the cell level information, such as SIB, so that the network device can schedule the polarization mode of the terminal device at the cell level, that is, the network device can adjust the polarization mode of the terminal device within a certain cell to make the scheduling of the polarization mode of the terminal device more flexible.

[0533] Above Figure 6 , Fig.10 , Fig.11 The communication methods shown can be implemented separately or in combination, and there is no limitation on this.

[0534] The present application provides another embodiment for implementing a network device to send a polarization mode of a neighboring cell to a terminal device, thereby accelerating a neighboring cell switching speed of the terminal device.

[0535] In some possible embodiments, in order to speed up the cell switching speed, the present application embodiment also provides a communication method, please refer to Fig.12 , Fig.12 The communication method of the present invention is shown in FIG. Figure 4The method may include S1201 to S1203, which are described below in sequence.

[0536] S1201, the network device determines second indication information.

[0537] The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the terminal device is located; or in other words, the second indication information is used to indicate the polarization mode of the signal measurement of the neighboring cell of the cell where the terminal device is located.

[0538] The polarization mode of the neighboring cell may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. Among them, the number of neighboring cells of the cell where the terminal device is located may be one or more. When the number of neighboring cells of the cell where the terminal device is located is 1, the polarization mode of the neighboring cell includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing; when the number of neighboring cells of the cell where the terminal device is located is multiple, the polarization mode of the neighboring cell includes: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0539] The second indication information may also be referred to as polarization mode indication information of a neighboring cell, which is not limited thereto.

[0540] Optionally, the way in which the network device determines the second indication information may include: the network device determines the cell where the terminal device is located; obtains the polarization mode of at least one neighboring cell around the cell where the terminal device is located, and generates the second indication information, that is, the second indication information can be used to indicate the polarization mode of at least one neighboring cell around the cell where the terminal device is located.

[0541] Optionally, the second indication information may be carried in terminal level information or cell level information. The terminal level information may include DCI, MAC CE or RRC, etc., and the cell level information may include SIB.

[0542] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of a cell where a terminal device in a first state is located, the first state includes a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0543] Take the second indication information carried in UE-Specific RRC as an example. Fig.13 This is a schematic diagram of the RRC state transition provided in the embodiment of the present application. Please refer to Fig.13 , the terminal device can be in the following states: connected state, inactive state, and dormant state. The connected state can be recorded as RRC_connected, the inactive state can be recorded as RRC_inactive, and the dormant state can be recorded as RRC_idle. The terminal device can switch between different states.

[0544] For a terminal device in a connected state, the second indication information may be carried in an RRC reconfiguration. The network device may send an RRCReconfiguration to the terminal device, and the RRCReconfiguration is used to indicate the polarization mode of the neighboring cell of the cell where the terminal device in a connected state is located, that is, it may indicate the polarization mode used by the terminal device when measuring the signal quality of the neighboring cell when performing cell switching.

[0545] For a terminal device in an inactive state, the second indication information may be carried in RRC recovery (RRCResume). The network device may send RRCResume to the terminal device, and the RRCResume is used to indicate the polarization mode of the neighboring cell of the cell where the terminal device in an inactive state is located, that is, it may indicate the polarization mode used by the terminal device in an inactive state when switching to a connected state and measuring the signal quality of the neighboring cell when performing a cell switching.

[0546] Among them, when the second indication information is carried in RRCReconfiguration or RRCResume, the second indication information can be, for example, an RRC information element (radio resourccontrol information element, RRC IE) carried in RRCReconfiguration or RRCResume. Specifically, the second indication information can be the SSB frequency (ssbFrequency) field in the measurement object new air interface (MeasObjectNR) of the RRC IE, and the ssbFrequency field can be used to indicate the polarization mode of the neighboring cell of the cell where the terminal device is located.

[0547] In implementation, the network device can configure the correspondence between the reference signal (RS) measurement frequency of the neighboring cell in the ssbFrequency field and the polarization mode of the neighboring cell for the terminal device in advance, and then send the RS measurement frequency of the neighboring cell to the terminal device through the ssbFrequency field, indicating the polarization mode of the neighboring cell of the cell where the terminal device is located. The RS here can be SSB or CSI-RS, which is not limited.

[0548] The network device can configure the correspondence between the RS measurement frequency of the neighboring cell and the polarization mode of the neighboring cell in the ssbFrequency field for the terminal device through the polarization configuration (polarCongfig) field. For example, Table 19 shows the correspondence between the RS measurement frequency of the neighboring cell and the polarization mode of the neighboring cell in the ssbFrequency field. Referring to Table 19, if the polarization mode of the neighboring cell of the cell where the terminal device is located is left-hand circular polarization, then the network device can send the RS measurement frequency of the neighboring cell to the terminal device through the ssbFrequency field as F0 to indicate that the polarization mode of the neighboring cell of the cell where the terminal device is located is left-hand circular polarization. In Table 19, the object refers to the object to be measured, and the object to be measured can be a cell or a beam, which is uniformly explained here and will not be limited below.

[0549] Table 19

[0550]

[0551] Among them, when the network device configures the correspondence between the RS measurement frequency of the neighboring cell and the polarization mode of the neighboring cell in the ssbFrequency field for the terminal device, it can also add and delete the correspondence. Taking the above Table 19 as an example, the network device can delete the correspondence of "right-hand circular polarization" indicated by "F0" in Table 19 through the polar deletion list (polarToRemoveList). The network device can add a correspondence between the RS measurement frequency of a neighboring cell and the polarization mode of the neighboring cell in Table 19 through the polar addition list (polarToAddList), refer to "F1" and "right-hand circular polarization" in the following Table 20.

[0552] Table 20

[0553]

[0554]

[0555] In this way, through the second indication information, a terminal device in a connected state or an inactive state can obtain the polarization mode of a neighboring cell in advance, that is, it can obtain the polarization mode used to measure the signal quality of a neighboring cell in advance, so that when performing a cell switching, the terminal device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell switching, which can improve the speed and accuracy of the terminal device's measurement of neighboring cell signals, can quickly and accurately feedback the measurement results, improve the success rate of cell switching, reduce the probability of initiating cell reselection due to radio link failure (RLF), and avoid requesting the polarization mode of the neighboring cell from the network device again during switching, which can speed up the cell switching speed.

[0556] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the terminal device in the second state is located, the second state includes an inactive state or an idle state, and the second indication information is carried in the cell level information.

[0557] Reference Fig.13 For a terminal device in an inactive or idle state, the second indication information may be carried in the SIB, and the index of the SIB (SIB X) may be used to indicate the polarization mode of the neighboring cell of the cell where the terminal device is located. The value of "X" in SIB X may be any one of 0 to 14. With the development of communication technology, X may also be more values. The embodiment of the present application does not limit the value of X. For example, SIB 4 and SIB 11 may be used to indicate the polarization mode of the neighboring cell of the cell where the terminal device is located.

[0558] For example, the polarization mode of the neighboring cell of the cell where the terminal device is located may be indicated through the measurement idle carrier list new air interface (measIdleCarrierListNR) in SIB 11 or the inter-frequency carrier frequency list (interFreqCarrierFreqList) in SIB4.

[0559] In implementation, the measurement frequency of the RS (including CSI-RS, SSB) of the neighboring cell can be indicated by measIdleCarrierListNR in SIB11 or interFreqCarrierFreqList in SIB4, corresponding to the cell to be measured. A polarization indication field is added to the measIdleConfigSIB field or other fields of SIB11, and a polarization indication field is added to SIB4 to indicate the polarization mode. The polarization indication field can indicate a list of polarization modes including additions and removals, or it can be a separate field indicating permutations and combinations of different polarization measurement modes.

[0560] By utilizing the above-mentioned second indication information, the current cell can obtain the polarization and RS information of the neighboring cell through the Xn interface between the core network or gNodeB or the internal communication of gNodeB, so as to indicate how the UE in different RRC states within the coverage of the current cell measures the signal quality of the neighboring cell.

[0561] In this way, through the second indication information, a terminal device in an inactive or idle state can obtain the polarization mode of a neighboring cell in advance, that is, it can obtain in advance the polarization mode used to measure the signal quality of the neighboring cell, so that when performing cell reselection, the terminal device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell reselection, which can improve the success rate of cell reselection, avoid requesting the polarization mode of the neighboring cell from the network device again during reselection, and speed up the cell reselection.

[0562] S1202: The network device sends second indication information to the terminal device. Correspondingly, the terminal device receives the second indication information from the network device.

[0563] Optionally, after S1202, Fig.12 The communication method shown may also include:

[0564] S1203, when performing cell switching, the terminal device performs cell switching according to the second indication information.

[0565] In S1201 to S1203, through the second indication information, the terminal device can obtain the polarization mode of the neighboring cell in advance, that is, it can obtain the polarization mode used for measuring the signal quality of the neighboring cell in advance, so that when switching the cell, the terminal device can measure the signal quality of the neighboring cell based on the polarization mode of the neighboring cell indicated by the second indication information to achieve cell switching, which can improve the success rate of cell switching, avoid requesting the polarization mode of the neighboring cell from the network device again during switching, and speed up the cell switching.

[0566] The present application provides another embodiment for realizing the polarization mode of sending an adjacent beam by a network device to a terminal device, thereby accelerating the adjacent beam switching speed of the terminal device.

[0567] In order to speed up the beam switching speed, the present application embodiment also provides a communication method, please refer to Fig.14 , Fig.14 The communication method of the present invention is shown in FIG. Figure 5 The method may include S1401 to S1403, which are described below in sequence.

[0568] S1401, the network device determines third indication information.

[0569] The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the terminal device is located; or in other words, the third indication information is used to indicate the polarization mode of the signal measurement of the adjacent beam of the beam where the terminal device is located.

[0570] The polarization mode of the adjacent beam may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. Among them, the number of adjacent beams of the beam where the terminal device is located may be one or more. When the number of adjacent beams of the beam where the terminal device is located is 1, the polarization mode of the adjacent beam includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing; when the number of adjacent beams of the beam where the terminal device is located is multiple, the polarization mode of the adjacent beam includes: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0571] The third indication information may also be referred to as polarization mode indication information of an adjacent beam, which is not limited thereto.

[0572] Optionally, the way in which the network device determines the third indication information may include: the network device determines the beam where the terminal device is located; obtains the polarization mode of at least one adjacent beam around the beam where the terminal device is located, and generates the third indication information, that is, the third indication information can be used to indicate the polarization mode of at least one adjacent beam around the beam where the terminal device is located.

[0573] Optionally, the third indication information may be carried in DCI or MAC CE or RRC, which is not limited. The third indication information may be carried in DCI format or MAC CE index or RRC IE.

[0574] Take the third indication information carried in RRC IE as an example.

[0575] For example, the third indication information may be added to the CSI-MeasConfig of the RRC IE. In this manner, one third indication information may indicate the polarization modes of multiple adjacent beams, thus saving bits.

[0576] For another example, third indication information may be added to the CSI-SSB-ResourceSet of the RRC IE.

[0577] For another example, the third indication information may be added to NZP-CSI-RS-Resource or NZP-CSI-RS-ResourceSet.

[0578] When applied, the third indication information may also indicate that the information indicated by the third indication information is effective. Alternatively, the third indication information may also indicate that the information indicated by the third indication information is not effective, and the network device may indicate that the information indicated by the third indication information is effective through other information (such as RRC, DCI, MAC CE), which is not limited.

[0579] S1402: The network device sends third indication information to the terminal device. Correspondingly, the terminal device receives the third indication information from the network device.

[0580] Optionally, after S1402, Fig.14 The communication method shown may also include:

[0581] S1403: When performing beam switching, the terminal device performs beam switching according to the third indication information.

[0582] In S1401 to S1403, through the third indication information, the terminal device can obtain the polarization mode of the adjacent beam in advance, that is, it can obtain in advance the polarization mode used for measuring the signal quality of the adjacent beam, so that when performing beam switching, the terminal device can measure the signal quality of the adjacent beam based on the polarization mode of the adjacent beam indicated by the third indication information to achieve beam switching, which can improve the success rate of beam switching, avoid requesting the polarization mode of the adjacent beam from the network device again when switching, and speed up the beam switching speed.

[0583] The present application provides another embodiment for realizing that a terminal device actively requests a network device to schedule a polarization mode of the terminal device.

[0584] Please refer to Fig.15 , Fig.15 The communication method of the present invention is shown in FIG. Figure 6 The method may include S1501 to S1503, which are described below in sequence.

[0585] S1501, the terminal device determines sixth indication information.

[0586] The sixth indication information is used to indicate the fourth polarization mode expected (or desired) by the terminal device; or in other words, the sixth indication information can be used to indicate that the terminal device expects the polarization mode to be switched to the fourth polarization mode; or, the sixth indication information can be used to indicate that the terminal device expects to work in the fourth polarization mode; or, the sixth indication information can be used to indicate that the polarization mode expected by the terminal device is the fourth polarization mode. It should be noted that, unless otherwise specified, the meanings to be expressed by these expressions of the sixth indication information are consistent and can be used interchangeably.

[0587] The fourth polarization mode may include: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0588] S1502: The terminal device sends sixth indication information to the network device. Correspondingly, the network device receives the sixth indication information from the terminal device.

[0589] S1503: The network device schedules the polarization mode of the terminal device according to the sixth indication information.

[0590] Among them, the implementation method of S1503 can refer to the above-mentioned method 4, which will not be repeated here.

[0591] Among them, in S1501, the terminal device determines the implementation method of the sixth indication information, which may include the following methods 25 to 29, which are described below respectively:

[0592] Method 25: The terminal device determines the sixth indication information according to the polarization mode supported by the terminal device.

[0593] Mode 26: The terminal device determines sixth indication information according to the CSI of channels of different polarization modes measured by the terminal device.

[0594] In method 26, when the channel quality of one polarization mode is worse than that of another polarization mode, the polarization mode with better channel quality can be used as the fourth polarization mode to apply to the network device to switch to the polarization mode with better channel quality, thereby improving communication efficiency. In method 26, when the service demand of the terminal device is large and the channel quality of polarization multiplexing is good, the terminal device can also apply to the network device to turn on polarization multiplexing to improve the throughput of the terminal device. In method 26, if the channel quality of A is poor in the two orthogonal polarization modes (denoted as A and B) currently used by the terminal device, the terminal device can apply to the network device for the terminal device to work in B, which has better channel quality, thereby improving the communication efficiency of the terminal device.

[0595] Method 27: The terminal device determines the sixth indication information according to the service requirements of the terminal device.

[0596] In mode 27, the terminal device can apply to the network device to enable polarization multiplexing when the service demand of the terminal device is large, thereby improving the throughput of the terminal device. The terminal device can apply to the network device to disable polarization multiplexing when the service demand of the terminal device is small, thereby further reducing the power consumption of the terminal device.

[0597] Method 28: The terminal device determines the sixth indication information based on the weather information.

[0598] In method 28, when the terminal device operates in cross-polarization multiplexing and the weather on the signal propagation path between the network device and the terminal device is bad, the terminal device can apply to the network device to operate in a single polarization mode (such as left-hand circular polarization) to reduce signal interference and improve communication quality.

[0599] Method 29: The terminal device determines the sixth indication information according to the crosstalk condition between the orthogonal polarization channels.

[0600] In mode 29, when the crosstalk between the orthogonal polarization channels between the network device and the terminal device is serious, the terminal device can apply to the network device to limit the polarization mode to a single polarization mode, thereby reducing signal interference and improving communication quality. When the crosstalk between the orthogonal polarization channels between the network device and the terminal device is not serious, the terminal device can apply to the network device to adjust the polarization mode to cross-polarization multiplexing, thereby improving throughput.

[0601] The specific implementation of determining the sixth indication information in the above methods 25 to 29 may correspond to the methods of determining the first indication information in the above methods 1, 2, 3, 5, and 6, except that the first indication information is determined by the network device, while the sixth indication information is determined by the terminal device.

[0602] In some possible embodiments, when the trigger condition is met, the terminal device may determine the sixth indication information according to the trigger condition. The trigger condition may include any one of the above-mentioned methods 25 to 29, and the trigger condition may trigger the terminal device to apply to the network device for scheduling the polarization mode of the terminal device. In other words, if the trigger condition is met, the terminal device may determine the sixth indication information according to the process corresponding to the met condition, thereby realizing the application to the network device for scheduling the polarization mode of the terminal device.

[0603] In this way, the terminal device can promptly discover problems with the polarization mode of the terminal device, and promptly apply to the network device to adjust the polarization mode of a certain terminal device, so that the polarization mode scheduling of the terminal device is more flexible and the spectrum efficiency can be improved.

[0604] It can be understood that the above-mentioned methods 25 to 29 can be implemented separately or in combination, and the embodiments of the present application do not limit this. Similarly, specific examples can refer to the above-mentioned examples 3 to 4, which will not be repeated here. In combination with the description of the above-mentioned methods 25 to 29, it can be known that the terminal device can determine the sixth indication information based on one or more of the polarization modes supported by the terminal device, the CSI of channels of different polarization modes measured by the terminal device, the service requirements of the terminal device, the polarization modes expected by the terminal device, the weather conditions between the terminal devices, and the crosstalk conditions between orthogonal polarization channels. In other words, the sixth indication information can be determined based on one or more of the following: the polarization modes supported by the terminal device, the CSI of channels of different polarization modes measured by the terminal device, the service requirements of the terminal device, the polarization modes expected by the terminal device, the weather conditions between the terminal devices, and the crosstalk conditions between orthogonal polarization channels.

[0605] It should be understood that in the above-mentioned methods 25 to 29, the terminal device can combine multiple information to determine a polarization mode that is more suitable for the terminal device, and apply to the network device through the sixth indication information to schedule the polarization mode for the terminal device. On the one hand, it can enable the terminal device to operate in a better polarization mode, thereby improving communication quality and reducing power consumption. On the other hand, it can make the polarization mode scheduling of the terminal device more flexible and the scheduling granularity finer, thereby improving spectrum efficiency.

[0606] Optionally, the sixth indication information may also be used to indicate a duration of the fourth polarization mode.

[0607] The duration of the fourth polarization mode can be understood as: the length of time that the terminal device is expected to continue to work in the fourth polarization mode. The duration of the fourth polarization mode can also be called a timer of the fourth polarization mode. When the timer expires, the terminal device can restore to the default polarization mode of the cell broadcast by the network device.

[0608] In this way, the terminal device can apply to the network device for the duration of working in the fourth polarization mode, and after the duration indicated by the sixth indication information expires, the terminal device can be restored to the previous polarization mode. In this way, the network device no longer needs to instruct the terminal device to restore to the previous polarization mode through an indication signaling, which can save signaling overhead and avoid the network device waiting for a long time for the terminal device to feedback the indication signaling. In addition, the flexibility of scheduling the polarization mode of the terminal device can be further improved.

[0609] The implementation method of the sixth indication information indicating the duration of the fourth polarization mode can refer to the above Figure 6 The description of “the implementation method of the first indication information indicating the duration of the first polarization mode” in the illustrated method embodiment, such as mode 7 and mode 8, will not be repeated here.

[0610] Optionally, when the twenty-seventh condition is met, the terminal device may determine that the cross-polarization multiplexing is the fourth polarization mode; the terminal device may also obtain the first service demand time of the terminal device, and determine the sixth indication information according to the first service demand time. The sixth indication information is used to indicate that the polarization mode expected by the terminal device is the fourth polarization mode (that is, cross-polarization multiplexing), and the sixth indication information is also used to indicate the duration of the fourth polarization mode, and the duration of the fourth polarization mode may be greater than (or ≥) the first service demand time.

[0611] The twenty-seventh condition may include: the current polarization mode of the terminal device is a single polarization mode, and the throughput of the terminal device is greater than (or ≥) the first throughput threshold. The first service demand time refers to the time during which the throughput of the terminal device continues to be greater than (or ≥) the first throughput threshold. For example, assuming that the time during which the throughput of the terminal device continues to be greater than the first throughput threshold in the future is 10s, the first service demand time is 10s, indicating that the service throughput of the terminal device in the next 10s is relatively large.

[0612] Exemplarily, taking the example that the polarization modes supported by the terminal device include left-hand circular polarization mode, right-hand circular polarization mode, and left-hand right-hand circular polarization cross-polarization multiplexing, if the polarization mode of the terminal device is left-hand circular polarization mode, and the throughput of the terminal device is greater than the first throughput threshold (that is, it satisfies the twenty-seventh condition), then the terminal device can determine that left-hand right-hand circular polarization cross-polarization multiplexing is the fourth polarization mode. The terminal device can also obtain the first service demand time of the terminal device. Assuming that the first service demand time is 10s, the terminal device can determine the sixth indication information based on the first service demand time, and the sixth indication information is used to indicate that the expected polarization mode of the terminal device is left-hand right-hand circular polarization cross-polarization multiplexing, and the sixth indication information is also used to indicate that the terminal device is expected to work under left-hand right-hand circular polarization cross-polarization multiplexing for a duration of 10s.

[0613] In this way, after the duration indicated by the sixth indication information expires, the terminal device can return from cross-polarization multiplexing to single polarization mode, so as to automatically shut down cross-polarization multiplexing when the first service demand time of the terminal device ends, save power consumption, and release air interface resources. In addition, the network device no longer needs to instruct the terminal device to restore to the previous polarization mode through an indication signaling, which can save signaling overhead and avoid the network device waiting for a long time for the terminal device to provide feedback on the indication signaling.

[0614] Optionally, when the twenty-eighth condition is met, the terminal device may determine that the single polarization mode is the fourth polarization mode; the terminal device may also obtain the second service demand time of the terminal device, and determine the sixth indication information according to the second service demand time. The sixth indication information is used to indicate that the polarization mode expected by the terminal device is the fourth polarization mode (that is, the single polarization mode), and the sixth indication information is also used to indicate the duration of the fourth polarization mode, and the duration of the fourth polarization mode may be greater than (or ≥) the second service demand time.

[0615] The twenty-eighth condition may include: the current polarization mode of the terminal device is cross-polarization multiplexing, and the throughput of the terminal device is less than (or ≤) the third throughput threshold. The second service demand time refers to the time when the throughput of the terminal device is continuously less than (or ≤) the third throughput threshold. For example, assuming that the time when the throughput of the terminal device is continuously less than the first throughput threshold in the future is 10s, the second service demand time is 10s, indicating that the service throughput of the terminal device in the next 10s is small.

[0616] Exemplarily, taking the example that the polarization modes supported by the terminal device include left-hand circular polarization mode, right-hand circular polarization mode, and left-hand right-hand circular polarization cross-polarization multiplexing, if the polarization mode of the terminal device is left-hand right-hand circular polarization cross-polarization multiplexing, and the throughput of the terminal device is less than the third throughput threshold (that is, it satisfies the twenty-eighth condition), then the terminal device can determine that the left-hand circular polarization mode is the fourth polarization mode. The terminal device can also obtain the second service demand time of the terminal device. Assuming that the second service demand time is 10s, the terminal device can determine the sixth indication information based on the second service demand time, and the sixth indication information is used to indicate that the expected polarization mode of the terminal device is the left-hand circular polarization mode, and the sixth indication information is also used to indicate that the terminal device is expected to work in the left-hand circular polarization mode for a duration of 10s.

[0617] In this way, after the duration indicated by the sixth indication information expires, the terminal device can return from the single polarization mode to the cross-polarization multiplexing mode, and automatically wake up the cross-polarization multiplexing mode when the second service demand time of the terminal device ends, thereby improving the throughput. In addition, the network device no longer needs to instruct the terminal device to restore to the previous polarization mode through an indication signaling, which can save signaling overhead and avoid the network device waiting for a long time for the terminal device to provide feedback on the indication signaling, thereby speeding up the scheduling of the network device.

[0618] In the embodiment of the present application, when the sixth indication information can also be used to indicate the duration of the fourth polarization mode, the network device can display or implicitly respond to the sixth indication information when receiving the sixth indication information. The following are respectively introduced:

[0619] Display response, the network device sends response information (such as an acknowledgement message (acknowledgement, ACK) or a negative acknowledgement message (negative acknowledgement, NACK)) to the terminal device, indicating that the sixth indication information is received.

[0620] Implicit response: when the network device receives the sixth indication information, it communicates with the terminal device using the fourth polarization mode indicated by the sixth indication information.

[0621] In the embodiment of the present application, in the case of a display response, the starting time of the duration of the fourth polarization mode is the time when the network device sends the response information to the terminal device.

[0622] In the case of implicit response, for the downlink, if the terminal device receives a data packet from the network device in the fourth polarization mode, it is considered that the network device has made an implicit response, and the start time of the duration of the fourth polarization mode is the reception time of the first data packet received from the network device in the fourth polarization mode. For the uplink, the terminal device sends a data packet to the network device in the fourth polarization mode (recorded as an uplink data packet). If the terminal device receives response information (such as ACK or NACK) fed back from the network device for the uplink data packet, it is considered that the network device has made an implicit response, and the start time of the duration of the fourth polarization mode is the sending time of the uplink data packet corresponding to the response information fed back by the network device for the uplink data packet.

[0623] In the embodiment of the present application, the sixth indication information can be carried in any one of RRC signaling, MAC CE, CSI-RS, and uplink control information (uplink control information, UCI).

[0624] Fig.15 In the present invention, the terminal device can apply to the network device for adjusting the polarization mode, and the polarization mode of the terminal device can be flexibly adjusted so that the terminal device works under a better polarization mode, thereby improving the spectrum efficiency of the polarization mode of the terminal device.

[0625] In the embodiment of the present application, the above Figure 6 , Figure 10 to Figure 12 , Fig.14 The communication methods shown can be implemented separately or in combination, and there is no limitation on this.

[0626] It should be noted that the first polarization indication information to the fifth polarization indication information may be implemented in the same field or in different fields, and this is not limited.

[0627] Combination of the above Figure 6 to Figure 15 The communication method provided by the embodiment of the present application is described in detail. Fig.16 A communication device for executing the communication method provided in an embodiment of the present application is described in detail.

[0628] like Fig.16As shown, an embodiment of the present application provides a communication device 1600. The communication device 1600 may be a terminal or a network device, or a device in a terminal device or a network device, or a device that can be used in combination with a terminal device or a network device. In one possible implementation, the communication device 1600 may include a module or unit corresponding to the method / operation / step / action performed by the first communication device or the second communication device in the above method embodiment, and the unit may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one possible implementation, the communication device 1600 includes: a processing module 1601 and a transceiver module 1602. For ease of explanation, Fig.16 Only the main components of the communication device are shown.

[0629] In some embodiments, the communication device 1600 may be adapted to Figure 3 In the communication system shown in FIG. , execution Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15 The functions of the network devices in the communication method shown in .

[0630] The processing module 1601 is used to determine the first indication information. The first indication information is carried in the terminal level information, and the first indication information is used to indicate the first polarization mode of the first communication device, and the first polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The transceiver module 1602 is used to send the first indication information.

[0631] In some possible designs, the processing module 1601 is further used to determine second indication information. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more of the transceiver module 1602 is also used to send the second indication information.

[0632] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0633] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the second state is located, the second state may include an inactive state or an idle state, and the second indication information is carried in the cell level information. Optionally, the cell level information may be SIB.

[0634] In a possible implementation, the first indication information may include a mapping relationship between indexes of multiple SSBs and multiple polarization modes.

[0635] In a possible implementation manner, the first indication information is further used to indicate a duration of the first polarization mode.

[0636] In one possible implementation, the first indication information is determined based on one or more of the following: polarization modes supported by the first communication device, CSI of channels of different polarization modes measured by the first communication device, service requirements of the first communication device, polarization mode expected by the first communication device, weather conditions between the first communication device and the second communication device, and crosstalk conditions between orthogonal polarization channels.

[0637] In a possible implementation manner, the terminal level information may be RRC signaling.

[0638] Optionally, the terminal level information may also be any one of MAC CE, CSI-RS, DCI, etc.

[0639] In a possible implementation manner, the first indication information may be one or more of a carrier frequency and RE of a CSI-RS, and one or more of the carrier frequency and resource units are used to indicate the first polarization mode.

[0640] In a possible implementation, the processing module 1601 is further used to determine third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The transceiver module 1602 is also used to send the third indication information.

[0641] In a possible implementation manner, the first indication information is used to indicate a first polarization mode of a first resource of the first communication device, where the first resource includes a time-frequency domain resource.

[0642] In other embodiments, the communication device 1600 may be suitable for Figure 3 In the communication system shown in FIG. , execution Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15 The functions of the terminal device in the communication method shown in .

[0643] The transceiver module 1602 is used to receive first indication information of a second communication device. The first indication information is used to indicate a first polarization mode of the first communication device, and the first polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing, and the first indication information is carried in the terminal level information. The processing module 1601 is used to communicate with the second communication device based on the first polarization mode.

[0644] In a possible implementation, the transceiver module 1602 is further configured to receive second indication information of a second communication device. The second indication information is used to indicate a polarization mode of a neighboring cell of a cell where the first communication device is located, and the polarization mode of the neighboring cell may include one or more of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0645] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0646] Optionally, the second indication information is also used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the second state is located, the second state may include an inactive state or an idle state, and the second indication information is carried in the cell level information. Optionally, the cell level information may be SIB.

[0647] In a possible implementation, the first indication information may include a mapping relationship between indexes of multiple SSBs and multiple polarization modes.

[0648] In a possible implementation manner, the first indication information is further used to indicate a duration of the first polarization mode.

[0649] In one possible implementation, the first indication information is determined based on one or more of the following: polarization modes supported by the first communication device, channel state information of channels of different polarization modes measured by the first communication device, service requirements of the first communication device, polarization mode expected by the first communication device, weather conditions between the first communication device and the second communication device, and crosstalk conditions between orthogonal polarization channels.

[0650] In a possible implementation manner, the terminal level information may be RRC signaling.

[0651] Optionally, the terminal level information may also be any one of MAC CE, CSI-RS, DCI, etc.

[0652] In a possible implementation, the transceiver module 1602 is further configured to receive third indication information of the second communication device. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0653] In a possible implementation manner, the first indication information is used to indicate a first polarization mode of a first resource of the first communication device, where the first resource includes a time-frequency domain resource.

[0654] In other embodiments, the communication device 1600 may be suitable for Figure 3 In the communication system shown in FIG. , execution Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15 The functions of the network devices in the communication method shown in .

[0655] The processing module 1601 is used to determine the fourth indication information. The fourth indication information is used to indicate the second polarization mode of the first beam, and the second polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The transceiver module 1602 is used to send the fourth indication information.

[0656] In a possible implementation, the fourth indication information includes an index of an SSB, and the index of the SSB corresponds to the second polarization mode; or, the fourth indication information includes a time-frequency position of a CSI-RS, and the time-frequency position of the CSI-RS corresponds to the second polarization mode.

[0657] In a possible implementation, the transceiver module 1602 is further configured to send a first mapping relationship. The first mapping relationship includes a mapping relationship between an index of at least one SSB and at least one polarization mode; or, the first mapping relationship includes a mapping relationship between a time-frequency position of at least one CSI-RS and at least one polarization mode.

[0658] In a possible implementation manner, the fourth indication information is carried in any one of RRC, DCI or MAC CE.

[0659] In a possible implementation, the processing module 1601 is further used to determine second indication information. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more of the transceiver module 1602 is also used to send the second indication information.

[0660] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0661] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the second state is located. The second state may include an inactive state or an idle state. The second indication information is carried in the cell-level information.

[0662] In a possible implementation manner, the fourth indication information is further used to indicate a duration of the second polarization mode.

[0663] In one possible implementation, the fourth indication information is determined based on one or more of the following: polarization modes supported by all first communication devices in the first beam, channel state information of channels of different polarization modes measured by all first communication devices in the first beam, service requirements of all first communication devices in the first beam, expected polarization modes of all first communication devices in the first beam, weather conditions within the coverage area of ​​the first beam, and crosstalk conditions between all orthogonal polarization channels in the first beam.

[0664] In a possible implementation, the processing module 1601 is further used to determine third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The transceiver module 1602 is also used to send the third indication information.

[0665] In other embodiments, the communication device 1600 may be suitable for Figure 3 In the communication system shown in FIG. , execution Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15 The functions of the terminal device in the communication method shown in .

[0666] The transceiver module 1602 is used to receive fourth indication information of the second communication device. The fourth indication information is used to indicate a second polarization mode of the first beam, and the second polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. The processing module 1601 is used to communicate with the second communication device based on the second polarization mode.

[0667] In a possible implementation, the fourth indication information includes an index of an SSB, and the index of the SSB corresponds to the second polarization mode; or, the fourth indication information includes a time-frequency position of a CSI-RS, and the time-frequency position of the CSI-RS corresponds to the second polarization mode.

[0668] In a possible implementation, the transceiver module 1602 is further used to receive second indication information of the second communication device. The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device is located, and the polarization mode of the neighboring cell may include: left-hand circular polarization, right-hand circular polarization, linear polarization, or one or more of cross-polarization multiplexing.

[0669] In a possible implementation manner, the fourth indication information is carried in any one of RRC, DCI or MAC CE.

[0670] In a possible implementation, the transceiver module 1602 is further configured to receive second indication information of a second communication device. The second indication information is used to indicate a polarization mode of a neighboring cell of a cell where the first communication device is located, and the polarization mode of the neighboring cell may include one or more of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

[0671] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the first state is located, the first state may include a connected state or an inactive state, and the second indication information is carried in the terminal level information.

[0672] Optionally, the second indication information is also used to indicate the polarization mode of a neighboring cell of the cell where the first communication device in the second state is located. The second state may include an inactive state or an idle state. The second indication information is carried in the cell-level information.

[0673] In a possible implementation manner, the fourth indication information is further used to indicate a duration of the second polarization mode.

[0674] In one possible implementation, the fourth indication information is determined based on one or more of the following: polarization modes supported by all first communication devices in the first beam, channel state information of channels of different polarization modes measured by all first communication devices in the first beam, service requirements of all first communication devices in the first beam, expected polarization modes of all first communication devices in the first beam, weather conditions within the coverage area of ​​the first beam, and crosstalk conditions between all orthogonal polarization channels in the first beam.

[0675] In a possible implementation, the transceiver module 1602 is further used to receive third indication information. The third indication information is used to indicate the polarization mode of the adjacent beam of the beam where the first communication device is located, and the polarization mode of the adjacent beam may include: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

[0676] Optionally, the transceiver module 1602 may include a receiving module and a sending module ( Fig.16 The sending module is used to implement the sending function of the communication device 1600, and the receiving module is used to implement the receiving function of the communication device 1600.

[0677] Optionally, the communication device 1600 may further include a storage module ( Fig.16 (not shown in the figure), the storage module stores a program or instruction. When the processing module 1601 executes the program or instruction, the communication device 1600 can execute Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15The function of a terminal device or a network device in any of the communication methods shown.

[0678] It should be understood that the processing module 1601 involved in the communication device 1600 can be implemented by a processor or a processor-related circuit component, which can be a processor or a processing unit; the transceiver module 1602 can be implemented by a transceiver or a transceiver-related circuit component, which can be a transceiver or a transceiver unit.

[0679] It should be noted that the communication device 1600 may be a terminal device or a network device, or a chip (system) or other components or assemblies provided in the terminal device or the network device, or a device including the terminal device or the network device, which is not limited in this application. Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15 The communication method described in any possible implementation manner, the network device is used to execute Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15 The communication method described in any possible implementation manner.

[0680] In addition, the technical effects of the communication device 1600 can be referred to Figure 6 , Figure 10 to Figure 12 , Fig.13 , Fig.15 The technical effects of the communication method shown in any one of the items will not be repeated here.

[0681] If the communication device 1600 provided in the embodiment of the present application is a chip, then the transceiver module 1602 in the communication device 1600 can correspond to the chip input and output respectively. For example, the receiving module in the transceiver module 1602 corresponds to the chip input, and the sending module in the transceiver module 1602 corresponds to the chip output. The present application does not limit this.

[0682] An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip system implements the method in any of the above method embodiments.

[0683] Optionally, the processor in the chip system may be one or more. The processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc. When implemented by software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

[0684] Optionally, the memory in the chip system may be one or more. The memory may be integrated with the processor or may be separately provided with the processor, which is not limited in the present application. Exemplarily, the memory may be a non-transient processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip or may be provided on different chips. The present application does not specifically limit the type of memory and the arrangement of the memory and the processor.

[0685] Exemplarily, the chip system can be a field programmable gate array (FPGA), an ASIC, a system on chip (SoC), a CPU, a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0686] The embodiment of the present application provides a communication system. The communication system includes one or more terminal devices and one or more network devices. The terminal device and the network device can be combined to execute the above method embodiment, and the specific execution process can refer to the above method embodiment, which will not be repeated here.

[0687] The present application also provides a computer-readable storage medium having a computer program stored thereon, and the computer-readable storage medium implements the functions of any of the above method embodiments when executed by a computer.

[0688] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0689] It should be understood that the processor in the embodiment of the present application may be a CPU, and the processor may also be other general-purpose processors, DSPs, ASICs, FPGAs or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0690] It should also be understood that the memory in the embodiment of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memory. Among them, the non-volatile memory can be a ROM, a programmable read-only memory (programmable ROM, PROM), an erasable programmable read-only memory (erasable PROM, EPROM), an EEPROM or a flash memory. The volatile memory can be a RAM, which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (doubledata rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

[0691] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can 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 or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can 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 can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0692] The terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects rather than to limit a specific order.

[0693] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0694] In this application, "at least one" means one or more, and "more" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0695] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0696] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0697] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0698] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0699] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple 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.

[0700] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0701] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. According to this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks or optical disks.

[0702] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, applied to a first communication device, characterized in that: include: receiving a radio resource control resumption signaling from a second communication device, wherein the radio resource control resumption signaling includes second indication information; The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the inactive state is located, and the polarization mode of the neighboring cell includes: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing; Perform signal measurement on the neighboring cell based on the second indication information.

2. The method according to claim 1, characterized in that The method further comprises: Receive fifth indication information of the second communication device; the fifth indication information is used to indicate a third polarization mode of the first cell of the second communication device, and the third polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing; Communicate with the second communication device based on the third polarization mode.

3. The method according to claim 2, characterized in that The method further comprises: Sending sixth indication information to the second communication device; the sixth indication information is used to indicate a fourth polarization mode expected by the first communication device, and the fourth polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

4. A communication method, applied to a second communication device, characterized in that: include: Determine radio resource control resumption signaling, where the radio resource control resumption signaling includes second indication information; The second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the inactive state is located, and the polarization mode of the neighboring cell includes: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing; The radio resource control resumption signaling is sent.

5. The method according to claim 4, characterized in that The method further comprises: Determine fifth indication information; the fifth indication information is used to indicate a third polarization mode of the first cell of the second communication device, and the third polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing; The fifth indication information is sent.

6. The method according to claim 5, characterized in that The method further comprises: Receive sixth indication information of the first communication device; the sixth indication information is used to indicate a fourth polarization mode expected by the first communication device, and the fourth polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

7. The method according to any one of claims 1 to 6, characterized in that The second indication information is carried in the MeasConfig field or the MeasObjectNR field in the radio resource control recovery.

8. The method according to any one of claims 1 to 7, characterized in that The polarization mode of the neighboring cell includes an uplink polarization mode of the neighboring cell and / or a downlink polarization mode of the neighboring cell.

9. The method according to claim 8, characterized in that The uplink polarization mode of the neighboring cell includes: any one of uplink left-hand circular polarization, uplink right-hand circular polarization, uplink horizontal polarization, uplink vertical polarization, uplink +45° polarization, uplink -45° polarization, uplink horizontal vertical cross-polarization multiplexing, uplink ±45° cross-polarization multiplexing, and uplink left-hand right-hand circular polarization cross-polarization multiplexing.

10. The method according to claim 8 or 9, characterized in that: The downlink polarization mode of the neighboring cell includes: any one of downlink left-hand circular polarization, downlink right-hand circular polarization, downlink horizontal polarization, downlink vertical polarization, downlink +45° polarization, downlink -45° polarization, downlink horizontal vertical cross-polarization multiplexing, downlink ±45° cross-polarization multiplexing, and downlink left-hand right-hand circular polarization cross-polarization multiplexing.

11. The method according to claim 2 or 5, characterized in that: The third polarization mode includes a third uplink polarization mode and / or a third downlink polarization mode.

12. The method according to claim 11, characterized in that The third uplink polarization mode includes: any one of uplink left-hand circular polarization, uplink right-hand circular polarization, uplink horizontal polarization, uplink vertical polarization, uplink +45° polarization, uplink −45° polarization, uplink horizontal and vertical cross-polarization multiplexing, uplink ±45° cross-polarization multiplexing, and uplink left-hand and right-hand circular polarization cross-polarization multiplexing.

13. The method according to claim 11 or 12, characterized in that: The third downlink polarization mode includes: any one of downlink left-hand circular polarization, downlink right-hand circular polarization, downlink horizontal polarization, downlink vertical polarization, downlink +45° polarization, downlink −45° polarization, downlink horizontal and vertical cross-polarization multiplexing, downlink ±45° cross-polarization multiplexing, and downlink left-hand and right-hand circular polarization cross-polarization multiplexing.

14. The method according to any one of claims 11 to 13, characterized in that The fifth indication information is carried in a system broadcast message.

15. A communication device, characterized in that: include: The transceiver module and the processing module, wherein: The transceiver module is used to receive a radio resource control recovery signaling of a second communication device, wherein the radio resource control recovery signaling includes second indication information; the second indication information is used to indicate a polarization mode of a neighboring cell of a cell where the communication device in an inactive state is located, and the polarization mode of the neighboring cell includes: one or more of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing; The processing module is used to perform signal measurement on the neighboring cell based on the second indication information.

16. The device according to claim 15, characterized in that The transceiver module is further used to receive fifth indication information of the second communication device; The fifth indication information is used to indicate a third polarization mode of the first cell of the second communication device, where the third polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing; The transceiver module is further configured to communicate with the second communication device based on the third polarization mode.

17. The device according to claim 16, characterized in that The transceiver module is further used to send sixth indication information to the second communication device; the sixth indication information is used to indicate a fourth polarization mode expected by the communication device, and the fourth polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing.

18. A communication device, characterized in that: It includes a transceiver module and a processing module, wherein: The processing module is used to determine the radio resource control recovery signaling, and the radio resource control recovery signaling includes second indication information; the second indication information is used to indicate the polarization mode of the neighboring cell of the cell where the first communication device in the inactive state is located, and the polarization mode of the neighboring cell includes: left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing. One or more; The transceiver module is used to send the radio resource control recovery signaling.

19. The device according to claim 18, characterized in that The processing module is further used to determine fifth indication information; the fifth indication information is used to indicate a third polarization mode of the first cell of the communication device, and the third polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization or cross-polarization multiplexing; The transceiver module is further used to send the fifth indication information.

20. The device according to claim 19, characterized in that The transceiver module is further used to receive sixth indication information of the first communication device; The sixth indication information is used to indicate a fourth polarization mode expected by the first communication device, where the fourth polarization mode includes: any one of left-hand circular polarization, right-hand circular polarization, linear polarization, or cross-polarization multiplexing.

21. The device according to any one of claims 15 to 20, characterized in that The second indication information is carried in the MeasConfig field or the MeasObjectNR field in the radio resource control recovery.

22. The device according to any one of claims 15 to 21, characterized in that The polarization mode of the neighboring cell includes an uplink polarization mode of the neighboring cell and / or a downlink polarization mode of the neighboring cell.

23. The device according to claim 22, characterized in that The uplink polarization mode of the neighboring cell includes: any one of uplink left-hand circular polarization, uplink right-hand circular polarization, uplink horizontal polarization, uplink vertical polarization, uplink +45° polarization, uplink -45° polarization, uplink horizontal vertical cross-polarization multiplexing, uplink ±45° cross-polarization multiplexing, and uplink left-hand right-hand circular polarization cross-polarization multiplexing.

24. The device according to claim 22 or 23, characterized in that The downlink polarization mode of the neighboring cell includes: any one of downlink left-hand circular polarization, downlink right-hand circular polarization, downlink horizontal polarization, downlink vertical polarization, downlink +45° polarization, downlink -45° polarization, downlink horizontal vertical cross-polarization multiplexing, downlink ±45° cross-polarization multiplexing, and downlink left-hand right-hand circular polarization cross-polarization multiplexing.

25. The device according to claim 16 or 19, characterized in that The third polarization mode includes a third uplink polarization mode and / or a third downlink polarization mode.

26. The device according to claim 25, characterized in that The third uplink polarization mode includes: any one of uplink left-hand circular polarization, uplink right-hand circular polarization, uplink horizontal polarization, uplink vertical polarization, uplink +45° polarization, uplink −45° polarization, uplink horizontal and vertical cross-polarization multiplexing, uplink ±45° cross-polarization multiplexing, and uplink left-hand and right-hand circular polarization cross-polarization multiplexing.

27. The device according to claim 25 or 26, characterized in that The third downlink polarization mode includes: any one of downlink left-hand circular polarization, downlink right-hand circular polarization, downlink horizontal polarization, downlink vertical polarization, downlink +45° polarization, downlink −45° polarization, downlink horizontal and vertical cross-polarization multiplexing, downlink ±45° cross-polarization multiplexing, and downlink left-hand and right-hand circular polarization cross-polarization multiplexing.

28. The device according to any one of claims 25 to 27, characterized in that The fifth indication information is carried in a system broadcast message.

29. A communication device, characterized in that: include: A processor coupled to a memory, the processor being configured to execute a computer program or instruction in the memory so that the communication device executes the method as claimed in any one of claims 1-3, 7-14; or the communication device executes the method as claimed in any one of claims 4-14.

30. A computer-readable storage medium, characterized in that: The method comprises a computer program or an instruction, which, when being executed on a computer, enables the method of any one of claims 1 to 3, 7 to 14 to be executed; or enables the method of any one of claims 4 to 14 to be executed.

31. A computer program product comprising instructions, characterized in that When it is run on a computer, the method of any one of claims 1 to 3, 7 to 14 is executed; or the method of any one of claims 4 to 14 is executed.

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