Communication method and communication device

Abstract

The invention provides a communication method and a communication device applied to the field of wireless communication. In the technical scheme provided by the invention, the terminal can receive the RRC signaling and the first DCI, and determines that the bit length of the first field in the first DCI is the first value when the RRC signaling does not indicate the first configuration information. Wherein the first configuration information comprises M first elements, a first field in the first DCI is used for indicating one first element in the M first elements, the format of the first DCI is a DCI format used for scheduling data channels of N cells, the first element comprises N sub-elements, and N is a positive integer greater than or equal to 1; each sub-element in the N sub-elements is used for indicating one line in the configuration table of the first parameter of one cell in the N cells, and M and N are positive integers. According to the technical scheme provided by the invention, the understanding of the network equipment and the terminal on the bit length of the first field is consistent, and the system performance is improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more particularly to a communication method and a communication device. Background Technology

[0002] Release 18 (R18) of the 3rd generation partnership project (3GPP) established the use of single downlink control information (single DCI) to schedule physical downlink shared channels (PDSCH) or physical uplink shared channels (PUSCH) on multiple frequency bands or multiple carriers to reduce resource overhead.

[0003] However, this method is complex and costly to implement. Summary of the Invention

[0004] This application provides a communication method and a communication device, applicable to the field of wireless communication. The technical solution provided in this application helps improve communication performance when scheduling multiple cells with a single downlink control information.

[0005] In a first aspect, embodiments of this application provide a communication method that can be applied to a terminal side, such as a terminal or a communication module within a terminal, or a circuit or chip (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip or system-in-package (SIP) chip containing a modem module) responsible for communication functions within the terminal. Taking the application of this method to a terminal as an example, the method includes: receiving radio resource control (RRC) signaling, wherein the RRC signaling does not indicate first configuration information, the first configuration information includes M first elements, a first field in first downlink control information (DCI) is used to indicate one of the M first elements, the format of the first DCI is a DCI format for scheduling data channels of N cells, the first element includes N sub-elements, each of the N sub-elements is used to indicate a row in a configuration table of first parameters of one of the N cells, where M and N are positive integers; receiving the first DCI; and determining the bit length of the first field in the first DCI as a first value.

[0006] In this technical solution, the terminal can receive RRC signaling and the first DCI sent by the network device. When the RRC signaling does not indicate the first configuration information, the terminal can determine that the bit length of the first field in the first DCI is a first value. This ensures that the network device and the terminal have a consistent understanding of the bit length of the first field, thereby improving the robustness of the communication system. The first value can be a default value predefined by the protocol, or it can be a value agreed upon by the network device and the terminal. The first configuration information is related to the first field and can be configured by the RRC parameters of the first field.

[0007] The configuration table for the first parameter can be in the form of a table, array, list, or other formats; no restriction is placed here. The configuration table for the first parameter of a cell can be understood as the configuration table of the first parameters configured within the cell, or the configuration table of the first parameters configured in the cell's active bandwidth part (BWP). The configuration table for the first parameter can also be called the configuration information for the first parameter, or a list of configurations for the first parameter, or something else entirely; no restriction is placed here.

[0008] The first DCI format is the DCI format used to schedule the data channels of at least one cell in a cell set. The first DCI format can be DCI format 1_3 or DCI format 0_3.

[0009] Each of the N cells can be understood as the serving cell of the terminal, or the scheduling cell of the first DCI, or the activation cell.

[0010] In one possible implementation, the first value is 0.

[0011] In this implementation, when the RRC signaling does not indicate the first configuration information, the terminal can assume that the bit length of the first field in the first DCI is 0, that is, the first field does not occupy bits in the first DCI, so as to save resources.

[0012] In one possible implementation, the method further includes: determining the first parameter of the cell based on the first row of the configuration table of the first parameter of the cell.

[0013] In this implementation, in scenarios where the RRC signaling does not indicate the first configuration information, but the cell contains a configuration table for the first parameter, the terminal can determine the first parameter of the cell based on the configuration table, thereby determining the terminal's behavior in each cell as indicated by the first field. This implementation allows for the standardization of terminal behavior in this scenario, reducing the impact on the functions of each cell and improving the system's communication performance.

[0014] In one possible implementation, the first field is any one of the following: a time-domain resource allocation indication field, a zero-power channel state information reference signal trigger indication field, or a channel sounding signal request field.

[0015] In this implementation, when the first field is a time domain resource assignment (TDRA) field, a zero power channel state information-reference signal trigger (ZP CSI-RS) trigger field, or a sounding reference signal request (SRS) request field, in scenarios where the RRC signaling does not indicate the first configuration information but a configuration table of the first parameters is configured in the cell, the terminal can determine the first parameters of the cell based on the configuration table of the first parameters in the cell, thereby improving the communication performance of the terminal.

[0016] In this application, when the first field is a TDRA field, the first configuration information corresponding to the TDRA field can be referred to as a joint TDRA field table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter tdra-FieldIndexListDCI-1-3 of the first field; if the format of the first DCI is DCI format 0_3, the first configuration information can be configured by the RRC parameter tdra-FieldIndexListDCI-0-3 of the first field. The configuration table of the first parameter in the cell can be a TDRA table or a data channel time-domain resource allocation list configured in each cell for uplink or downlink scheduling. The first parameter can be understood as the time-domain resource information of the cell's data channel.

[0017] When the first field is a ZP CSI-RS trigger indication field, the first configuration information corresponding to the ZP CSI-RS trigger indication field can be called a joint ZP CSI-RS trigger table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter zp-CSI-RSListDCI-1-3 of the first field. The configuration table of the first parameter in the cell can be an aperiodic ZP CSI-RS resource set list (aperiodicZP-CSI-RS-ResourceSetsToAddModList). The first parameter can be understood as not triggering the aperiodic ZP CSI-RS resource set, or it can be understood as the specific aperiodic ZP CSI-RS to be sent when triggering the aperiodic ZP CSI-RS resource set.

[0018] When the first field is an SRS request field, the first configuration information corresponding to the SRS request field can be called a joint SRS request table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter srs-RequestListDCI-1-3 of the first field; if the format of the first DCI is DCI format 0_3, the first configuration information can be configured by the RRC parameter srs-RequestListDCI-0-3 of the first field. The configuration table of the first parameter in the cell can be an SRS request table, such as Table 7.3.1.1.2-24 in the technical specification (TS) 38.212-i30. The first parameter can be understood as not triggering the SRS resource set (SRS-ResourceSet) or the aperiodic SRS resource set, or it can be understood as triggering the SRS resource set or the aperiodic SRS resource set, or it can be understood as which SRS resource set is specifically triggered when triggering the SRS resource set or the aperiodic SRS resource set. It should be noted that when the SRS resource set or non-periodic SRS resource set of the cell is triggered in the first field, the specific SRS or non-periodic SRS to be sent can be determined based on the configuration table of the first parameter and the SRS resource set or resource type (resourceType) configured by the network device through the RRC parameter as a non-periodic SRS resource set.

[0019] In one possible implementation, when the first field is a rate matching indication field, the method further includes: determining the time domain resources of a first data channel based on the time domain resource allocation indication field in the first DCI, wherein the first data channel is the data channel of the first cell among the N cells; determining the frequency domain resources of the first data channel based on the frequency domain resource allocation indication field in the first DCI; and transmitting the first data channel on the time domain resources and the frequency domain resources.

[0020] In this application, when the first field is a rate matching indicator field, the first configuration information corresponding to the rate matching indicator field can be called a joint rate matching indicator table. The format of the first DCI is DCI format 1_3, and the first configuration information can be configured by the RRC parameter rateMatchListDCI-1-3 of the first field. The configuration table of the first parameter in the cell can be rate matching pattern group 1 and / or rate matching pattern group 2. The first parameter can be understood as the rate matching resource (RMR) or rate matching pattern group of the cell. The rate matching pattern group can contain one or more RMRs.

[0021] In this implementation, transmitting the first data channel can be understood as receiving the first data channel.

[0022] In this implementation, when the first field is a rate matching indication field, the impact on normal system operation is low when the terminal does not perform rate matching. Therefore, when the RRC signaling does not indicate the first configuration information, the terminal in the cell can choose not to perform rate matching, or in other words, the terminal receives the cell's data channel based on the time-frequency resources indicated by the first DCI, or when the cell's rate matching resources overlap with the time-frequency resources indicated by the first DCI, the overlapping resources can be used to receive the cell's data channel. This implementation can reduce the terminal's power consumption and allows for the agreement on the behavior of the terminal in the cell in this scenario, thereby improving the system's robustness.

[0023] In one possible implementation, when the first field is a channel sounding signal offset indication field, the offset value of the channel sounding signal for each of the N cells is 0.

[0024] In this application, when the first field is a Channel Sounding Signal Offset Indicator (SRS) field, the first configuration information corresponding to the SRS offset indicator field can be called a joint SRS offset indicator table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter srs-OffsetListDCI-1-3 of the first field; if the format of the first DCI is DCI format 0_3, the first configuration information can be configured by the RRC parameter srs-OffsetListDCI-0-3 of the first field. The configuration table of the first parameter in the cell can be an available slot offset list or an available slot offset. The first parameter can be understood as the available slot offset value for the terminal to send aperiodic SRS in the cell, that is, the additional offset value performed by the terminal on the aperiodic SRS after performing an offset on the aperiodic SRS based on the slot offset parameter.

[0025] In this implementation, when the first field is the SRS offset indication field, the impact on normal system operation is low when the terminal does not perform available slot offset on aperiodic SRS transmissions in the cell. Therefore, when the RRC signaling does not indicate the first configuration information, the available slot offset value for aperiodic SRS transmissions in the cell is 0, or in other words, after the terminal in the cell performs an offset on aperiodic SRS transmissions based on the slot offset parameter (slotOffset), it no longer performs additional offsets on aperiodic SRS transmissions.

[0026] In one possible implementation, when the first field is a transmission configuration indication (TCI) field, the method further includes: sending first information, the first information being used to indicate that the terminal can be configured with second information, the second information being used to indicate whether the default quasi-co-location (QCL) assumption function of the data channel of each of the N cells is enabled.

[0027] In this application, when the first field is a TCI field, the first configuration information corresponding to the TCI field can be referred to as a joint TCI table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter tci-PresentInDCI-1-3 or tci-ListDCI-1-3 of the first field. The configuration table of the first parameter in the cell can be a TCI state list (tci-StatesToAddModList) and / or a TCI state in the DCI (tci-PresentInDCI). The first parameter can be understood as the QCL assumption of the cell's data channel.

[0028] In this implementation, when the first field is the TCI field, if the terminal has the function of determining the default QCL assumption for the data channel of each cell, the terminal can send first information to the network device to indicate that the terminal can be configured with second information. The second information can be understood as information used to enable or disable the default QCL assumption function. This implementation allows the network device to know the terminal's capabilities, which helps improve communication performance. Each cell can be configured with a default QCL assumption.

[0029] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or there is a first QCL relationship between the data channel of each cell and the downlink physical control channel (PDCCH) of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0030] In one possible implementation, the default QCL assumes that it includes the TCI state with the largest index among the active TCI states in the active bandwidth portion of each cell.

[0031] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0032] In one possible implementation, the method further includes: receiving the second information, the second information indicating that the default QCL assumption function is enabled.

[0033] In this implementation, when the first field is the TCI field, if the RRC signaling does not indicate the first configuration information, the network device can indicate to enable the default QCL assumption function so that the terminal can determine the default QCL assumption of the cell's data channel, thereby improving the system's communication performance.

[0034] Secondly, embodiments of this application provide a communication method that can be applied to a terminal side, such as a terminal or a communication module within a terminal, or a circuit or chip (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip or system-in-package (SIP) chip containing a modem module) responsible for communication functions within the terminal. Taking the application of this method to a terminal as an example, the method includes: receiving RRC signaling, wherein the RRC signaling does not include second information, the second information indicating that the default QCL assumption function of the data channel of each of the N cells scheduled by the first DCI is enabled, and the format of the first DCI is a DCI format used for scheduling the data channels of the N cells; receiving first configuration information, wherein the first configuration information contains M first elements, the TCI field in the first DCI is used to indicate one of the M first elements, the first element includes N sub-elements, each of the N sub-elements is used to indicate a row in a configuration table of the first parameters of one of the N cells, where M and N are positive integers.

[0035] In this technical solution, when the network device does not indicate that the default QCL assumption function of the data channel of each cell is enabled, the network device will definitely indicate the first configuration information through RRC signaling, so that the terminal can determine the size and bit state of the TCI field in the first DCI based on the first configuration information. The terminal can determine the QCL assumption of the data channel of each cell, thereby improving the robustness of the communication system.

[0036] In one possible implementation, the method further includes: sending third information, the third information being used to indicate the wireless access capability of the terminal, the third information not indicating first information, the first information being used to indicate that the terminal can be configured with the second information; wherein the terminal expects to be configured with the first configuration information.

[0037] In this implementation, the network device does not indicate whether the default QCL assumption function for the data channel of each cell is enabled. This includes two scenarios: the terminal has the function to determine the default QCL assumption for the data channel of each cell, but the network device does not indicate whether it is enabled; and the terminal does not have the function to determine the default QCL assumption for the data channel of each cell. When the terminal does not have the function to determine the default QCL assumption for the data channel of each cell, or in other words, when the terminal cannot be configured with the second information, the terminal expects the network device to indicate the first configuration information via RRC signaling, thereby causing the network device to indicate the first configuration information via RRC signaling.

[0038] Thirdly, this application provides a communication method that can be applied to the terminal side, such as a terminal or a communication module in the terminal, or a circuit or chip in the terminal that is responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or system in package (SIP) chip containing a modem module). Taking the application of this method to a terminal as an example, the method includes: receiving a first RRC signaling, the first RRC signaling indicating first configuration information, the first configuration information containing M first elements, each of the M first elements including N sub-elements, each of the N sub-elements being used to indicate a first parameter of one of the N cells scheduled by the first DCI, the format of the first DCI being a DCI format for scheduling the data channels of the N cells, where M and N are positive integers; receiving a second RRC signaling, the second RRC signaling not indicating a configuration table of the first parameter of the first cell among the N cells; receiving the first DCI, the first field in the first DCI being used to indicate a first element among the M first elements; ignoring the first sub-elements among the N sub-elements included in the first element, the first sub-elements being used to indicate the first parameter of the first cell.

[0039] In this technical solution, if the network device has configured the first configuration information corresponding to the first field in the primary scheduling cell, or in other words, configured the RRC parameter of the first field, but has not configured a configuration table for the first parameter in the first cell, the terminal can ignore or discard the first sub-element contained in the first element of the first configuration information indicated by the first field in the first DCI, or in other words, the terminal does not execute the relevant operation indicated by the first field in the first cell. This technical solution can determine the behavior or operation of the terminal in the first cell, or in other words, define the behavior of the terminal in the first cell, improving the robustness of the communication system, in scenarios where the first configuration information is configured in the primary scheduling cell but a configuration table for the first parameter is not configured in the first cell. The RRC parameter of the first field is used to configure the first configuration information.

[0040] The configuration table for the first parameter can be in the form of a table, array, list, or other formats; there are no restrictions here. The configuration table for the first parameter of a cell can be understood as the configuration table for the first parameter within the cell, or the configuration table for the first parameter configured in the cell's BWP.

[0041] In one possible implementation, the first field is any of the following: a rate matching indication field, a channel sounding signal offset indication field, a zero-power channel state information reference signal trigger indication field, a channel sounding signal request field, or a TCI field.

[0042] In one possible implementation, when the first field is the rate matching indication field, the method further includes: determining the time domain resources of the first data channel based on the time domain resource allocation indication field in the first DCI, wherein the first data channel is the data channel of the first cell; determining the frequency domain resources of the first data channel based on the frequency domain resource allocation indication field in the first DCI; and transmitting the first data channel on the time domain resources and the frequency domain resources.

[0043] In this implementation, transmitting the first data channel can be understood as receiving the first data channel.

[0044] In this implementation, the terminal does not perform rate matching when receiving the first data channel. For example, when the terminal receives the first data channel, if the rate matching resources of the first cell overlap with the time-frequency resources indicated by the first DCI, the overlapping resources can be used to receive the first data channel.

[0045] In one possible implementation, when the first field is the channel sounding signal offset indication field, the offset value of the channel sounding signal of the first cell is 0.

[0046] In this implementation, the available slot offset for aperiodic SRS transmission in the first cell is 0. In other words, after the terminal in the first cell performs an offset on the aperiodic SRS transmission based on the slot offset parameter (slotOffset), it no longer performs an additional offset on the aperiodic SRS transmission.

[0047] In one possible implementation, when the first field is the zero-power channel state information reference signal trigger indication field or the channel probe signal request field, the bit state of the first parameter in the first cell is 0.

[0048] In this implementation, the bit state of the first parameter in the first cell is 0, which can be understood as the value of the first parameter in the first cell being 0.

[0049] When the first field is the ZP CSI-RS trigger indication field, the value of the first parameter in the first cell is 0, which can be understood as the terminal in the first cell not triggering the non-periodic ZP CSI-RS resource set.

[0050] When the first field is the SRS request field, the value of the first parameter in the first cell is 0, which can be understood as the terminal in the first cell not triggering the non-periodic SRS resource set.

[0051] In one possible implementation, when the first field is the TCI field, the method further includes: sending first information, the first information being used to indicate that the terminal can be configured with second information, the second information being used to indicate whether the default QCL assumption function of the data channel of each of the N cells is enabled.

[0052] In this implementation, when the first field is the TCI field, if the terminal has the function of determining the default QCL assumption for the data channel of each cell, the terminal can send first information to the network device to indicate that the terminal can be configured with second information. The second information can be understood as information used to enable or disable the default QCL assumption function. This implementation allows the network device to know the terminal's capabilities, which helps improve communication performance. Each cell can be configured with a default QCL assumption.

[0053] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or a first QCL relationship exists between the data channel of each cell and the PDCCH of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0054] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0055] In one possible implementation, the method further includes: receiving the second information, the second information indicating that the default QCL assumption function is enabled.

[0056] In this implementation, when the first field is the TCI field, the network device can instruct the default QCL assumption function to be enabled, so that the terminal can determine the default QCL assumption of the data channel of the first cell, thereby improving the communication performance of the system.

[0057] Fourthly, embodiments of this application provide a communication method that can be applied to a terminal side, such as a terminal or a communication module within a terminal, or a circuit or chip (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip or system-in-package (SIP) chip containing a modem module) responsible for communication functions within the terminal. Taking the application of this method to a terminal as an example, the method includes: receiving RRC signaling, wherein the RRC signaling indicates first configuration information, the first configuration information containing M first elements, a first field in a first DCI used to indicate one of the M first elements, the format of the first DCI is a DCI format for scheduling data channels of N cells, the first element includes N sub-elements, each of the N sub-elements used to indicate a row in a configuration table of first parameters of one of the N cells, M and N are positive integers, and the terminal expects to be configured with the first configuration information; receiving the first DCI, wherein the bit length of the first field satisfies a first formula with respect to M.

[0058] In this technical solution, protocol constraint configuration can be added, with the first configuration information being mandatory by default. The terminal then expects RRC signaling to indicate the first configuration information, or in other words, expects to be configured with the first configuration information. Correspondingly, the network device will definitely indicate the first configuration information via RRC signaling. After receiving the first configuration information and the first DCI, the terminal can determine the bit length of the first field in the first DCI and determine the terminal's behavior in each cell indicated by the first field, thus improving the robustness of the communication system.

[0059] In one possible implementation, the first field is any one of the following: a time-domain resource allocation indication field, a zero-power channel state information reference signal triggering indication field, a channel sounding signal request field, a rate matching indication field, a channel sounding signal offset indication field, or a transmission configuration indication field.

[0060] In this implementation, the first field is the field information of type 1B.

[0061] Fifthly, embodiments of this application provide a communication method that can be applied to the network side, such as access network equipment, modules (e.g., circuits, chips, or chip systems) within the access network equipment, or logical nodes, logical modules, or software capable of implementing all or part of the functions of the access network equipment. Taking the application of this method to a network device (such as an access network device) as an example, the method includes: sending RRC signaling, wherein the RRC signaling does not indicate first configuration information, the first configuration information includes M first elements, a first field in a first DCI is used to indicate one of the M first elements, the format of the first DCI is a DCI format for scheduling data channels of N cells, the first element includes N sub-elements, each of the N sub-elements is used to indicate a row in a configuration table of first parameters of one of the N cells, where M and N are positive integers; and sending the first DCI.

[0062] In one possible implementation, the first field is any one of the following: a time-domain resource allocation indication field, a zero-power channel state information reference signal triggering indication field, a channel sounding signal request field, a rate matching indication field, a channel sounding signal offset indication field, or a TCI field.

[0063] In one possible implementation, when the first field is the channel sounding signal offset indication field, the offset value of the channel sounding signal for each of the N cells is 0.

[0064] In one possible implementation, when the first field is the TCI field, the method further includes: receiving first information, the first information being used to indicate that the terminal can be configured with second information, the second information being used to indicate whether the default QCL assumption function of the data channel of each of the N cells is enabled.

[0065] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or a first QCL relationship exists between the data channel of each cell and the PDCCH of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0066] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0067] In one possible implementation, the method further includes: sending the second information, the second information indicating that the default QCL assumption function is enabled.

[0068] The benefits of the fifth aspect and some possible implementations of the fifth aspect can be found in the first aspect, and will not be elaborated here.

[0069] Sixthly, embodiments of this application provide a communication method that can be applied to the network side, such as access network equipment, modules (e.g., circuits, chips, or chip systems) within the access network equipment, or logical nodes, logical modules, or software capable of implementing all or part of the functions of the access network equipment. Taking the application of this method to a network device (such as an access network device) as an example, the method includes: sending RRC signaling, wherein the RRC signaling does not include second information, the second information indicating that the default QCL assumption function of the data channel of each of the N cells scheduled by the first DCI is enabled, and the format of the first DCI is a DCI format used for scheduling the data channels of the N cells; sending first configuration information, wherein the first configuration information contains M first elements, the TCI field in the first DCI is used to indicate one of the M first elements, the first element includes N sub-elements, each of the N sub-elements is used to indicate a row in a configuration table of the first parameters of one of the N cells, where M and N are positive integers.

[0070] The beneficial effects of this technical solution can be seen in the second aspect, and will not be repeated here.

[0071] In one possible implementation, the method further includes: setting the first configuration information to enable.

[0072] In this implementation, when the network device does not indicate that the default QCL assumption function of the data channel of each cell is enabled, the network device can set the first configuration information to enable, or the network device will definitely indicate the first configuration information through RRC signaling, so that the terminal can determine the size of the TCI field in the first DCI based on the first configuration information, thereby improving the robustness of the communication system.

[0073] Seventhly, embodiments of this application provide a communication method that can be applied to the network side, such as access network equipment, modules (e.g., circuits, chips, or chip systems) within the access network equipment, or logical nodes, logical modules, or software capable of implementing all or part of the functions of the access network equipment. Taking the application of this method to a network equipment (such as an access network equipment) as an example, the method includes: sending a first RRC signaling, the first RRC signaling indicating first configuration information, the first configuration information containing M first elements, each of the M first elements including N sub-elements, each of the N sub-elements being used to indicate a first parameter of one of the N cells scheduled by a first DCI, the format of the first DCI being a DCI format for scheduling the data channels of the N cells, where M and N are positive integers; sending a second RRC signaling, the second RRC signaling not indicating a configuration table of the first parameter of the first cell among the N cells; sending the first DCI, the first field in the first DCI being used to indicate a first element among the M first elements, the first sub-element among the N sub-elements included in the first element being used to indicate the first parameter of the first cell.

[0074] In one possible implementation, the first field is any one of the following: a rate matching indication field, a channel sounding signal offset indication field, a zero-power channel state information reference signal trigger indication field, or a channel sounding signal request field.

[0075] In one possible implementation, when the first field is the rate matching indication field, the method further includes: determining the time domain resources of the first data channel based on the time domain resource allocation indication field in the first DCI, wherein the first data channel is the data channel of the first cell; determining the frequency domain resources of the first data channel based on the frequency domain resource allocation indication field in the first DCI; and transmitting the first data channel on the time domain resources and the frequency domain resources.

[0076] In one possible implementation, when the first field is the channel sounding signal offset indication field, the offset value of the channel sounding signal of the first cell is 0.

[0077] In one possible implementation, when the first field is the zero-power channel state information reference signal trigger indication field or the channel probe signal request field, the bit state of the first parameter in the first cell is 0.

[0078] In one possible implementation, when the first field is the TCI field, the method further includes: receiving first information, the first information being used to indicate that the terminal can be configured with second information, the second information being used to indicate whether the default QCL assumption function of the data channel of each of the N cells is enabled.

[0079] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or a first QCL relationship exists between the data channel of each cell and the PDCCH of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0080] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0081] In one possible implementation, the method further includes: sending the second information, the second information indicating that the default QCL assumption function is enabled.

[0082] In this technical solution, the beneficial effects of the seventh aspect and any possible implementation of the seventh aspect can be referred to the beneficial effects of the third aspect, and will not be repeated here.

[0083] Eighthly, this application provides a communication device that has the functions of the first aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the first aspect. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0084] For example, the device may include a communication unit and a processing unit. The communication unit is configured to receive RRC signaling, which does not indicate first configuration information. The first configuration information contains M first elements, and a first field in a first DCI is used to indicate one of the M first elements. The format of the first DCI is a DCI format for scheduling data channels of N cells. Each first element includes N sub-elements, and each of the N sub-elements is used to indicate a row in a configuration table of first parameters of one of the N cells, where M and N are positive integers. The communication unit is also configured to receive the first DCI. The processing unit is configured to determine that the bit length of the first field in the first DCI is a first value.

[0085] In one possible implementation, the first value is 0.

[0086] In one possible implementation, the processing unit is further configured to determine the first parameter of the cell based on the first row of the configuration table of the first parameter of the cell.

[0087] In one possible implementation, the first field is any one of the following: a time-domain resource allocation indication field, a zero-power channel state information reference signal trigger indication field, or a channel sounding signal request field.

[0088] In one possible implementation, when the first field is a rate matching indication field, the processing unit is further configured to determine the time domain resources of the first data channel based on the time domain resource allocation indication field in the first DCI, wherein the first data channel is the data channel of the first cell among the N cells; the processing unit is further configured to determine the frequency domain resources of the first data channel based on the frequency domain resource allocation indication field in the first DCI; and the processing unit is further configured to transmit the first data channel on the time domain resources and the frequency domain resources.

[0089] In one possible implementation, when the first field is a channel sounding signal offset indication field, the offset value of the channel sounding signal for each of the N cells is 0.

[0090] In one possible implementation, when the first field is a TCI field, the communication unit is further configured to send first information, which indicates that the terminal can be configured with second information, and the second information indicates whether the default QCL assumption function of the data channel of each of the N cells is enabled.

[0091] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or a first QCL relationship exists between the data channel of each cell and the PDCCH of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0092] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0093] In one possible implementation, the communication unit is further configured to receive the second information, which indicates that the default QCL assumption function is enabled.

[0094] Ninthly, this application provides a communication device that has the functions of the second aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the second aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0095] For example, the device may include: a communication unit. The communication unit is configured to receive RRC signaling, the RRC signaling not including second information, the second information indicating the enabling of the default quasi-co-location QCL assumption function for the data channels of each of the N cells scheduled by the first DCI, the format of the first DCI being a DCI format for scheduling the data channels of the N cells; the communication unit is further configured to receive first configuration information, the first configuration information containing M first elements, the TCI field in the first DCI being used to indicate one of the M first elements, the first element including N sub-elements, each of the N sub-elements being used to indicate a row in a configuration table of first parameters of one of the N cells, where M and N are positive integers.

[0096] In one possible implementation, the communication unit is further configured to send third information, which indicates the wireless access capability of the terminal. The third information does not indicate the first information, and the first information indicates that the terminal can be configured with the second information; wherein the terminal expects to be configured with the first configuration information.

[0097] In a tenth aspect, this application provides a communication device that has the functions of the third aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the third aspect. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0098] For example, the device may include a communication unit and a processing unit. The communication unit is configured to receive a first RRC signaling, the first RRC signaling indicating first configuration information, the first configuration information containing M first elements, each of the M first elements including N sub-elements, each of the N sub-elements indicating a first parameter of one of the N cells scheduled by a first DCI, the first DCI being in the format of a DCI used for scheduling data channels of the N cells, where M and N are positive integers; the communication unit is further configured to receive a second RRC signaling, the second RRC signaling not indicating a configuration table of the first parameters of the first cell among the N cells; the communication unit is further configured to receive the first DCI, a first field in the first DCI indicating one of the M first elements; the processing unit is configured to ignore the first sub-elements among the N sub-elements included in the first element, the first sub-elements indicating the first parameters of the first cell.

[0099] In one possible implementation, the first field is any of the following: a rate matching indication field, a channel sounding signal offset indication field, a zero-power channel state information reference signal trigger indication field, a channel sounding signal request field, or a TCI field.

[0100] In one possible implementation, when the first field is the rate matching indication field, the method further includes: determining the time domain resources of the first data channel based on the time domain resource allocation indication field in the first DCI, wherein the first data channel is the data channel of the first cell; determining the frequency domain resources of the first data channel based on the frequency domain resource allocation indication field in the first DCI; and transmitting the first data channel on the time domain resources and the frequency domain resources.

[0101] In one possible implementation, when the first field is the channel sounding signal offset indication field, the offset value of the channel sounding signal of the first cell is 0.

[0102] In one possible implementation, when the first field is the zero-power channel state information reference signal trigger indication field or the channel sounding signal request field, the value of the first parameter in the first cell is 0.

[0103] In one possible implementation, when the first field is the TCI field, the communication unit is further configured to send first information, which indicates that the terminal can be configured with second information, and the second information indicates whether the default QCL assumption function of the data channel of each of the N cells is enabled.

[0104] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or a first QCL relationship exists between the data channel of each cell and the PDCCH of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0105] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0106] In one possible implementation, the communication unit is further configured to receive the second information, which indicates that the default QCL assumption function is enabled.

[0107] In the eleventh aspect, this application provides a communication device that has the functions of the fourth aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the fourth aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0108] For example, the device may include: a communication unit. The communication unit is configured to receive RRC signaling, the RRC signaling indicating first configuration information, the first configuration information containing M first elements, a first field in a first DCI used to indicate one of the M first elements, the format of the first DCI being a DCI format for scheduling data channels of N cells, the first element including N sub-elements, each of the N sub-elements used to indicate a row in a configuration table of first parameters of one of the N cells, where M and N are positive integers, and the terminal expects to be configured with the first configuration information; the communication unit is further configured to receive the first DCI, the bit length of the first field satisfying a first formula with respect to M.

[0109] In one possible implementation, the first field is any one of the following: a time-domain resource allocation indication field, a zero-power channel state information reference signal triggering indication field, a channel sounding signal request field, a rate matching indication field, a channel sounding signal offset indication field, or a transmission configuration indication field.

[0110] In a twelfth aspect, this application provides a communication device that has the functions of the fifth aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the fifth aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0111] For example, the device may include: a communication unit. The communication unit is configured to transmit RRC signaling, which does not indicate first configuration information. The first configuration information contains M first elements, and a first field in the first DCI is used to indicate one of the M first elements. The format of the first DCI is a DCI format for scheduling data channels of N cells. The first element includes N sub-elements, and each of the N sub-elements is used to indicate a row in a configuration table of first parameters of one of the N cells, where M and N are positive integers. The communication unit is also configured to transmit the first DCI.

[0112] In one possible implementation, the first field is any one of the following: a time-domain resource allocation indication field, a zero-power channel state information reference signal triggering indication field, a channel sounding signal request field, a rate matching indication field, a channel sounding signal offset indication field, or a TCI field.

[0113] In one possible implementation, when the first field is the channel sounding signal offset indication field, the offset value of the channel sounding signal for each of the N cells is 0.

[0114] In one possible implementation, when the first field is the TCI field, the communication unit is further configured to receive first information, the first information being used to indicate that the terminal can be configured with second information, and the second information being used to indicate whether the default QCL assumption function of the data channel of each of the N cells is enabled.

[0115] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or a first QCL relationship exists between the data channel of each cell and the PDCCH of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0116] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0117] In one possible implementation, the communication unit is further configured to send the second information, which indicates that the default QCL assumption function is enabled.

[0118] In a thirteenth aspect, this application provides a communication device that has the functions of the sixth aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the sixth aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0119] For example, the device may include a communication unit and a processing unit. The communication unit is configured to transmit RRC signaling, which does not include second information indicating that the default QCL assumption function of the data channel of each of the N cells scheduled by the first DCI is enabled, wherein the format of the first DCI is a DCI format used for scheduling the data channels of the N cells; the communication unit is also configured to transmit first configuration information, which contains M first elements, wherein the TCI field in the first DCI is used to indicate one of the M first elements, and each of the N sub-elements indicates a row in a configuration table of first parameters of one of the N cells, where M and N are positive integers.

[0120] In one possible implementation, the processing unit is configured to enable the first configuration information.

[0121] In a fourteenth aspect, this application provides a communication device that has the functions of the seventh aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the seventh aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0122] For example, the device may include: a communication unit. The communication unit is configured to transmit a first RRC signaling, the first RRC signaling indicating first configuration information, the first configuration information containing M first elements, each of the M first elements including N sub-elements, each of the N sub-elements indicating a first parameter of one of the N cells scheduled by the first DCI, the first DCI being in the format of a DCI used for scheduling data channels of the N cells, where M and N are positive integers; the communication unit is further configured to transmit a second RRC signaling, the second RRC signaling not indicating a configuration table of the first parameters of the first cell among the N cells; the communication unit is further configured to transmit the first DCI, a first field in the first DCI indicating one of the M first elements, the first sub-element of the N sub-elements included in the first element indicating the first parameter of the first cell.

[0123] In one possible implementation, the first field is any one of the following: a rate matching indication field, a channel sounding signal offset indication field, a zero-power channel state information reference signal trigger indication field, or a channel sounding signal request field.

[0124] In one possible implementation, when the first field is the rate matching indication field, the method further includes: determining the time domain resources of the first data channel based on the time domain resource allocation indication field in the first DCI, wherein the first data channel is the data channel of the first cell; determining the frequency domain resources of the first data channel based on the frequency domain resource allocation indication field in the first DCI; and transmitting the first data channel on the time domain resources and the frequency domain resources.

[0125] In one possible implementation, when the first field is the channel sounding signal offset indication field, the offset value of the channel sounding signal of the first cell is 0.

[0126] In one possible implementation, when the first field is the zero-power channel state information reference signal trigger indication field or the channel sounding signal request field, the value of the first parameter in the first cell is 0.

[0127] In one possible implementation, when the first field is the TCI field, the communication unit is further configured to receive first information, the first information being used to indicate that the terminal can be configured with second information, and the second information being used to indicate whether the default QCL assumption function of the data channel of each of the N cells is enabled.

[0128] In one possible implementation, the default QCL assumption includes any of the following: the TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or a first QCL relationship exists between the data channel of each cell and the PDCCH of the primary scheduling cell among the N cells, wherein the PDCCH is used to carry the first DCI.

[0129] In one possible implementation, the control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block, the second QCL relationship being of type C, and the terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

[0130] In one possible implementation, the communication unit is further configured to send the second information, which indicates that the default QCL assumption function is enabled.

[0131] In a fifteenth aspect, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the first aspect above. The one or more processors are executable to carry out the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the first aspect above. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0132] In one possible implementation, the processor is used to communicate with other devices or components through the interface circuit.

[0133] In one possible implementation, the communication device may also include the memory.

[0134] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0135] In a sixteenth aspect, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the second aspect above. The one or more processors are executable to carry out the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the second aspect above. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0136] In one possible implementation, the processor is used to communicate with other devices or components through the interface circuit.

[0137] In one possible implementation, the communication device may also include the memory.

[0138] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0139] In a seventeenth aspect, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the third aspect above. The one or more processors are executable to carry out the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the third aspect above. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0140] In one possible implementation, the processor is used to communicate with other devices or components through the interface circuit.

[0141] In one possible implementation, the communication device may also include the memory.

[0142] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0143] Eighteenthly, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the fourth aspect above. The one or more processors can execute the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the fourth aspect above when executed. The interface circuit is used to implement the communication functions within the communication device and / or the communication functions between the communication device and other devices or components.

[0144] In one possible implementation, the processor is used to communicate with other devices or components through the interface circuit.

[0145] In one possible implementation, the communication device may also include the memory.

[0146] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0147] In a nineteenth aspect, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the fifth aspect above. The one or more processors are capable of executing the computer program or instructions, which, when executed, cause the communication device to implement the methods in any possible design or implementation of the fifth aspect above. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0148] In one possible implementation, the processor is used to communicate with other devices or components through the interface circuit.

[0149] In one possible implementation, the communication device may also include the memory.

[0150] The aforementioned communication device may be a network device (such as an access network device), or a module (such as a circuit, chip, or chip system) in a network device, or a logical node, logical module, or software that can realize all or part of the functions of a network device.

[0151] In a twentieth aspect, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the sixth aspect above. The one or more processors are executable to carry out the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the sixth aspect above when executed. The interface circuit is used to implement the communication functions within the communication device and / or the communication functions between the communication device and other devices or components.

[0152] In one possible implementation, the processor is used to communicate with other devices or components through the interface circuit.

[0153] In one possible implementation, the communication device may also include the memory.

[0154] The aforementioned communication device may be a network device (such as an access network device), or a module (such as a circuit, chip, or chip system) in a network device, or a logical node, logical module, or software that can realize all or part of the functions of a network device.

[0155] In a twentieth aspect, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the seventh aspect above. The one or more processors are executable to carry out the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the seventh aspect above when executed. The interface circuit is used to implement the communication functions within the communication device and / or the communication functions between the communication device and other devices or components.

[0156] In one possible implementation, the processor is used to communicate with other devices or components through the interface circuit.

[0157] In one possible implementation, the communication device may also include the memory.

[0158] The aforementioned communication device may be a network device (such as an access network device), or a module (such as a circuit, chip, or chip system) in a network device, or a logical node, logical module, or software that can realize all or part of the functions of a network device.

[0159] In a twentieth aspect, this application provides a communication system that may include the means of the eighth or fifteenth aspect, as well as the means of the twelfth or nineteenth aspect; or the communication system may include the means of the ninth or sixteenth aspect, as well as the means of the thirteenth or twentieth aspect; or the communication system may include the means of the tenth or seventeenth aspect, as well as the means of the fourteenth or twenty-first aspect.

[0160] In a twentieth aspect, this application provides a computer-readable storage medium storing computer-readable instructions that, when read and executed by a computer, cause the computer to perform any of the first to seventh aspects and any possible implementation thereof.

[0161] In a twentieth aspect, this application provides a computer program product that, when read and executed by a computer, causes the computer to perform any of the first to seventh aspects and any possible implementation thereof.

[0162] The technical effects that can be achieved by any of the above-mentioned aspects eight to twenty-four, and any possible implementation of any of them, are described in the above-mentioned descriptions of the technical effects that can be achieved by aspects one to seven, and will not be repeated here. Attached Figure Description

[0163] Figure 1 This is a schematic diagram of the architecture of a communication system applicable to the embodiments of this application;

[0164] Figure 2 A schematic diagram illustrating a single DCI scheduling of multiple cells provided in this application;

[0165] Figure 3 This application provides a schematic diagram illustrating the parsing of TDRA domain information.

[0166] Figure 4 A schematic flowchart illustrating a communication method provided in an embodiment of this application;

[0167] Figure 5 A schematic diagram illustrating a rate matching method provided for this application;

[0168] Figure 6 A schematic diagram illustrating an SRS offset provided for this application;

[0169] Figure 7 This is a schematic diagram of the structure of a communication device provided in one embodiment of this application;

[0170] Figure 8 This is a schematic diagram of the structure of a communication device provided in another embodiment of this application. Detailed Implementation

[0171] The technical solutions provided in this application can be applied to wireless communication between communication devices. Wireless communication between communication devices can include: wireless communication between network devices and terminals, wireless communication between network devices, and wireless communication between terminals. In this application, the term "wireless communication" can also be abbreviated as "communication," and the term "communication" can also be described as "data transmission," "information transmission," or "transmission."

[0172] The technical solutions provided in this application can be applied to various communication systems, including but not limited to: Long Term Evolution (LTE) systems, LTE Advanced (LTE-A) systems, fourth-generation (4G) mobile communication systems, fifth-generation (5G) mobile communication systems, new radio (NR) and future communication systems, etc., and this application does not impose any specific limitations on them.

[0173] Wireless communication systems include communication devices that can communicate wirelessly using air interface resources. These communication devices can include network devices and terminals; network devices can also be called base stations. Air interface resources can include at least one of time-domain resources, frequency-domain resources, code resources, and spatial resources. In the embodiments of this application, "at least one" can also be described as one or more, and "multiple" can be two, three, four, or more; this application does not impose any limitations.

[0174] Figure 1 This is a schematic diagram of the architecture of a communication system applicable to embodiments of this application. Figure 1 As shown, the communication system 100 includes a core network device 110, a wireless access network device 120, and at least one terminal 130 (e.g., ...). Figure 1 Terminals 130a and 130b (collectively referred to as 130) are connected wirelessly to the wireless access network device 120, which in turn connects wirelessly or via a wired connection to the core network device 110. The core network device 110 and the wireless access network device 120 can be independent physical devices, or they can integrate the functions of the core network device 110 and the logical functions of the wireless access network device 120 onto the same physical device, or they can be a single physical device integrating some of the functions of the core network device 110 and some of the functions of the wireless access network device 120. Terminal 130 can be fixed in location or movable. Figure 1For illustrative purposes only, the communication system 100 may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 Not shown in the figure. The embodiments of this application do not limit the number of core network equipment 110, wireless access network equipment 120 and terminal 130 included in the mobile communication system 100.

[0175] The wireless access network device 120 is an access device through which the terminal 130 wirelessly accesses the mobile communication system 100. It can be a network device NodeB (NodeB), base station (BS), transmission reception point (TRP), evolved NodeB (eNodeB), network device in a new radio (NR) communication system, network device in a future mobile communication system, or an access node in a wireless fidelity (WiFi) system, etc. The embodiments of this application do not limit the specific technology or device form used in the wireless access network device 120. In the embodiments of this application, the device used to implement the function of the wireless access network device 120 can be a wireless access network device; it can also be a device capable of supporting the wireless access network device to implement this function, such as a chip system, which can be installed in the wireless access network device. In the technical solutions provided in the embodiments of this application, the wireless access network device is taken as a network device as an example to describe the technical solutions provided in the embodiments of this application.

[0176] Terminal 130 can also be referred to as terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. Terminal 130 can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. In this embodiment, the device used to implement the terminal's functions can be the terminal itself; it can also be a device capable of supporting the terminal in implementing these functions, such as a chip system, which can be installed in the terminal. In this embodiment, the chip system can be composed of chips or can include chips and other discrete devices.

[0177] The wireless access network device 120 and terminal 130 can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the wireless access network device and terminal device.

[0178] The embodiments of this application can be applied to downlink signal transmission, uplink signal transmission, and device-to-device (D2D) signal transmission. For downlink signal transmission, the transmitting device can be a wireless access network device, and the corresponding receiving device can be a terminal. For uplink signal transmission, the transmitting device can be a terminal, and the corresponding receiving device can be a wireless access network device. For D2D signal transmission, the transmitting device can be a terminal, and the corresponding receiving device can also be a terminal. The embodiments of this application do not limit the direction of signal transmission.

[0179] Wireless access network (WLAN) devices and terminals, as well as terminals themselves, can communicate using licensed spectrum, unlicensed spectrum, or both simultaneously. WLAN devices and terminal devices, as well as terminals themselves, can communicate using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used between WLAN devices and terminals.

[0180] For ease of understanding, some technical terms used in the embodiments of this application will be explained below.

[0181] 1. Downlink control information (DCI)

[0182] Both uplink data transmission and downlink data reception by the terminal require scheduling from network devices. For example, network devices (such as base stations) can send relevant scheduling information to the terminal via the DCI carried on the physical downlink control channel (PDCCH). The terminal can perform blind detection (BD) on the PDCCH based on the control resource set (CORESET) and search space set (SS set) to receive the DCI. In this application, "receiving DCI" can also be referred to as "blindly detecting DCI" or "blindly detecting candidate PDCCH".

[0183] 2. Carrier aggregation (CA)

[0184] Carrier aggregation (CA) is a transmission technology that aggregates two or more component carriers (CCs) to achieve greater transmission bandwidth. Based on CA technology, a terminal can simultaneously utilize several carriers for uplink and downlink transmission according to its capabilities and bandwidth requirements. The multiple carriers simultaneously accessed by the terminal can belong to the same frequency band or multiple different frequency bands. A carrier is a radio signal (such as an electromagnetic wave) with a specific frequency, bandwidth, and standard emitted by network equipment in a wireless communication system, used to carry information. A carrier can also be called a carrier frequency. One cell in a base station can correspond to one or more carriers. In this embodiment, one carrier corresponds to one cell as an example. In CA technology, a terminal configured with carrier aggregation can simultaneously connect to multiple cells, or in other words, the terminal has multiple serving cells. The multiple serving cells of the terminal can include one primary cell (PCell) and at least one secondary cell (SCell). In this embodiment, a carrier unit can be simply referred to as a carrier.

[0185] In this context, PCell refers to the cell where the terminal establishes an initial connection, the cell where radio resource control (RRC) connection reconstruction is performed, or the primary cell designated during handover. The PCell is responsible for RRC transmission communication with the terminal. The carrier corresponding to the PCell can be called the primary carrier. SCell refers to a cell added after the initial security activation procedure via an RRC connection reconfiguration message to provide additional radio resources to the terminal. The carrier corresponding to the SCell can be called the secondary carrier.

[0186] 3. Carrier scheduling

[0187] A carrier can be used for transmission on the physical uplink shared channel (PUSCH) or the physical downlink shared channel (PDSCH). The carrier used for uplink data channel transmission is called an uplink carrier, and the carrier used for downlink data channel transmission is called a downlink carrier. For example, a network device can schedule a terminal to transmit PUSCH on an uplink carrier and schedule a terminal to receive PDSCH on a downlink carrier. In this embodiment, the scheduling of PUSCH transmission by the network device on the uplink carrier is called uplink carrier scheduling, and the scheduling of PDSCH transmission by the network device on the downlink carrier is called downlink carrier scheduling. The network device can perform uplink carrier scheduling or downlink carrier scheduling by transmitting DCI on the downlink carrier.

[0188] In CA (Carrier Response) scenarios, network devices can schedule multiple carriers simultaneously, such as multiple uplink carriers or multiple downlink carriers. For example, network devices can schedule multiple carriers by sending multiple DCIs. One of the multiple carriers can be an uplink carrier or a downlink carrier, and there is a one-to-one correspondence between the multiple carriers and the multiple DCIs, or in other words, one of the multiple carriers requires a corresponding DCI for scheduling. This multi-DCI scheduling method increases the overhead of the control channel. In addition, the terminal needs to perform blind detection on multiple DCIs, which increases the terminal's blind detection budget and blind detection complexity. In this embodiment, one carrier corresponds to one cell, so carrier scheduling in this embodiment can also be called cell scheduling. The following description will uniformly use cell scheduling as an example. The scenario in which multiple cells are scheduled by multiple DCIs can be called a multi-cell scheduling scenario.

[0189] Release 18 (R18) proposed using a single DCI to schedule data channels (such as PDSCH or PUSCH) for multiple cells, thereby reducing control channel overhead. For example, network devices can transmit a single DCI on the primary scheduling cell; one single DCI can schedule multiple cells simultaneously, thus reducing control channel overhead, freeing up more resources for data channel transmission, and increasing capacity. The scenario of a single DCI simultaneously scheduling multiple cells can also be called a multi-cell scheduling scenario.

[0190] In multi-cell scheduling scenarios, network devices can configure a cell set (or a set of cells) via RRC parameters. This cell set contains multiple serving cells for the terminal. A single DCI can schedule one or more serving cells from this cell set. Each serving cell can be referred to as the cell scheduled by the single DCI, or simply the scheduled cell, or the scheduling cell of that single DCI. When the cell set contains a primary cell (PCell), the primary cell in the cell set can be called the primary scheduling cell. When the cell set does not contain a primary cell, the network device can instruct the terminal to designate one of the secondary cells (SCells) in the cell set as the primary scheduling cell via higher-layer signaling (e.g., RRC parameters).

[0191] 4. DCI format

[0192] Based on the aforementioned introduction to carrier scheduling, it can be understood that there are currently two types of DCIs. One type is the DCI used to schedule a single cell, which can be called a legacy DCI; the other type is the single DCI proposed in Release 18, used to schedule one or more cells. It should be understood that, compared with the legacy DCI, a single DCI can achieve the scheduling of multiple cells.

[0193] When traditional DCI is used for uplink and downlink scheduling, the corresponding DCI format can include DCI format 0_0, DCI format 1_0, DCI format 0_1, DCI format 1_1, DCI format 0_2, and DCI format 1_2. When a single DCI is used for uplink scheduling, the corresponding DCI format can be DCI format 0_3, and when used for downlink scheduling, the corresponding DCI format can be DCI format 1_3.

[0194] 5. Field Information

[0195] The field information in DCI can be referred to as bit fields, fields, DCI fields, information fields, and DCI format information fields. Field information can indicate scheduling information, which includes, but is not limited to, the following: time-domain resource information of the scheduling data, frequency-domain resource information of the scheduling data, modulation and coding scheme of the data scheduling, number of antenna ports, number of transmission layers, etc. Different DCI formats contain different field information.

[0196] 6. Quasi-co-location (QCL)

[0197] In NR, if the large-scale characteristics of the channel for a symbol transmitted on one antenna port can be derived from the large-scale characteristics of the channel for a symbol transmitted on another antenna port, then these two antenna ports are said to be quasi-co-located. This can be described as having QCL properties or QCL relationships.

[0198] QCL (Quick Communication Channel) relationships are used to indicate that multiple resources share one or more identical or similar communication characteristics. For multiple resources with a QCL relationship, identical or similar communication configurations can be used. For example, if two signals are transmitted from two different antenna ports and experience the same large-scale characteristics, then the two antenna ports can be considered to have a QCL relationship. In this case, the channel large-scale characteristics / channel estimation result of transmitting one symbol from one antenna port can be inferred from the channel large-scale characteristics of transmitting one symbol from the other port, which is beneficial for receiver processing. Large-scale characteristics can include one or more delay spreads, Doppler spreads, Doppler shifts, average gain, average delay, and spatial Rx parameters. QCL types can include four types: QCL-Type A, QCL-Type B, QCL-Type C, and QCL-Type D.

[0199] The parameters for QCL-TypeA can be: {Doppler frequency shift, Doppler spread, average delay, delay spread}; the parameters for QCL-TypeB can be: {Doppler frequency shift, Doppler spread}; the parameters for QCL-TypeC can be: {Doppler frequency shift, average delay}; and the parameters for QCL-TypeD can be: {spatial reception parameters}.

[0200] QCL-type D relationships can be understood as follows: a synchronization / physical broadcast channel block (SS / PBCH) and a channel state information reference signal (CSI-RS) have different QCL-Type D quasi-co-address properties (for the purpose of determining the CORESET, an SS / PBCH block is considered to have different QCL-Type D properties than a CSI-RS). Alternatively, it can be understood as a SS / PBCH block corresponding to a wide beam, while a CSI-RS corresponds to a narrow beam. Although the narrow beam may be obtained from the wide beam through beam refinement, the wide and narrow beams are still considered two different beams with different beam information, i.e., different QCL-Type D quasi-co-address properties. QCL-Type D is used to assist in beamforming, such as for forming spatial filters and beam indicators. QCL-Type D can be understood from both the transmitting and receiving perspectives. From the transmitting end's perspective, if two antenna ports are QCL-Type D, it means that the corresponding beam directions of these two antenna ports are spatially aligned. From the receiving end's perspective, if two antenna ports are QCL-Type D, it means that the receiver can receive the signals transmitted by these two antenna ports in the same beam direction. A beam can be understood as a communication resource; for example, network devices can communicate with terminals via beams. The technology for generating beams is called beamforming. Beamforming technology can adjust the phase and amplitude of each antenna element in an antenna array, causing the electromagnetic waves received or transmitted by the antenna elements to coherently superimpose in a specific direction, thereby generating a beam with a specific directionality and shape.

[0201] The technical problem to be solved by this application is described below.

[0202] A single DCI domain information contains several types of domain information, one of which is Type 1B domain information. Type 1B domain information may include: time domain resource assignment (TDRA) domain information, rate matching indicator domain information, zero power channel state information-reference signal trigger (ZPCSI-RS) trigger domain information, sounding reference signal request (SRS request) domain information, SRS offset indicator domain information, and transmission configuration indication (TCI) domain information.

[0203] Type 1B domain information is characterized by unified indication and independent parsing. Unified indication means that one domain information can indicate the scheduling information for N cells in a single DCI, where N is a positive integer. Normally, scheduling one cell requires one corresponding indication, and scheduling N cells requires N corresponding indications. Unified indication assumes that scheduling N cells only requires one corresponding indication; that is, one domain information in a single DCI can indicate the scheduling information for N cells through a single indication. Independent parsing means that one indication needs to be parsed individually based on the configuration parameters of each of the N cells to determine the scheduling information for each cell's data channel. The configuration information for each cell can be configured by the network device or predefined by the protocol. The size of a Type 1B domain information can be determined based on the number of rows in the joint indication table configured by the RRC parameters of the Type 1B domain information. The network device can send the RRC parameters of each domain information in the Type 1B domain information in the master scheduling cell to configure the joint indication table for each domain information. For example, the size of the field information of Type 1B and the number of rows in the joint instruction table can satisfy the following relationship: Y = log2(X). Where Y is the size of the field information of Type 1B in bits, and X is the number of rows in the joint instruction table. X and Y are positive integers. In this embodiment, the joint instruction table can also be called a joint instruction list, joint instruction information, etc., and this application does not limit this. The size of the field information of Type 1B can be represented by bit length or other forms, and is not limited here. The following description uses bit length as an example and is not intended to limit the technical solution of this application.

[0204] The characteristics of Type 1B domain information will be explained below using TDRA domain information as an example.

[0205] Figure 2 A schematic diagram illustrating a single DCI scheduling of multiple cells is shown. Figure 2 The single DCI shown is in DCI format 1_3. For example... Figure 2 As shown, a cell set contains 4 cells, such as Figure 2 Cells 1, 2, 3, and 4 are included. Cell 1 is the primary scheduling cell, and network devices transmit a single DCI on Cell 1. This single DCI can simultaneously schedule the PDSCH of each of these four cells. For example, the TDRA domain information in this single DCI can be used to indicate the time-domain resource information of these four PDSCHs.

[0206] Figure 3 A schematic diagram illustrating the parsing of TDRA field information is shown. Figure 3 Table 1 is the joint TDRA field table or joint TDRA field table used for downlink scheduling. This table is configured by the RRC parameter tdra-FieldIndexListDCI-1-3 of the TDRA field information configured by the network device in the primary scheduling cell. As shown in Table 1, the joint TDRA field table contains 32 rows, so the bit length of the TDRA field information in DCI format 1_3 is log2(32) = 5 bits. Table 2 is the TDRA table for cell #4 configured for the downlink active bandwidth part (BWP) in cell #4, used to indicate the time domain resource location of the downlink scheduled PDSCH in cell #4 and the time domain relationship between PDSCH and PDCCH. Table 2 can also be understood as the PDSCH time domain resource allocation list (pdsch-TimeDomainAllocationList) of cell #4. It should be understood that... Figure 3 For illustrative purposes only. Figure 3 It can also include TDRA forms for Community 1, Community 2, and Community 3. Figure 3 It is not shown in the middle.

[0207] like Figure 3As shown, the shaded area in a single DCI indicates the location of the TDRA field information. The terminal can determine the joint TDRA field table based on the RRC parameter `tdra-FieldIndexListDCI-1-3` of the TDRA field information in the primary scheduling cell, and determine the bit length of the TDRA field information as 5 bits based on the number of rows in the joint TDRA field table. This allows the terminal to determine the bit state of the TDRA field information in DCI format 1_3 or a single DCI. Assuming the bit state of the TDRA field information in DCI format 1_3 is '00000' (i.e., a value of 0), it corresponds to the row with index 0 in the joint TDRA field table, or the first row in the joint TDRA field table. This row contains four TDRA values, representing the time-domain resource information of the PDSCH for the four scheduled cells (e.g., cells 1 to 4). This process is called joint indication. The TDRA value of each cell obtained from the joint indication can be used to determine the time-domain resource information of the PDSCH for each cell independently based on the TDRA table configured in each cell. This process is called independent resolution. Figure 3 As shown, when the value of the TDRA field information in DCI format 1_3 is 0, the TDRA value corresponding to cell 4 in the joint TDRA field table is 1. Therefore, the terminal can determine the time-domain resource information of the PDSCH in cell 4 based on the information indicated by the row index of 1 in the TDRA table configured in cell 4 (as shown in Table 2). It can be seen that K0 in Table 2 is 1, indicating that the offset between the single DCI receive time slot B and the time slot A where the time-domain resources of the PDSCH in cell 4 are located is 1; S is 7, indicating that the starting symbol index of the time-domain resources of the PDSCH in time slot A is 7; L is 14, indicating that the PDSCH occupies 14 symbols in the time domain, thus allowing the determination of the time-domain resource information of the PDSCH in cell 4. It should be noted that the index column in Tables 1 and 2 is a virtual indicator column, or in other words, the index column does not actually exist.

[0208] However, in existing communication protocols, the RRC parameter for the joint indication table used to configure Type 1B domain information, sent by network devices in the primary scheduling cell, is optional. When the RRC parameter for Type 1B domain information is not configured in the primary scheduling cell, it is assumed that the number of rows in the joint indication table configured for that domain information is 0, which means that X in Y = log2(X) is 0. Since 0 has no logarithm, the absence of the RRC parameter for Type 1B domain information in the primary scheduling cell leads to an abnormal calculation of the size of Type 1B domain information in a single DCI.

[0209] Furthermore, if the RRC parameters for the Type 1B domain information are not configured in the primary scheduling cell, but each scheduled cell has relevant configuration information, the behavior of the terminal in each scheduled cell indicated by the Type 1B domain information will be unclear. For example, if the RRC parameters for the TDRA domain information are not configured in the primary scheduling cell, or if the joint TDRA domain table is not configured in the primary scheduling cell, but a TDRA table is configured in each scheduled cell, the terminal cannot determine the time-domain resource information of the data channel in each scheduled cell when it needs to transmit data channels in each scheduled cell. As another example, if the RRC parameters for the SRS request domain information are not configured in the primary scheduling cell, but each scheduled cell has relevant SRS request configurations (such as protocol-predefined SRS request tables, aperiodic SRS resource sets, etc.), the terminal cannot determine whether to trigger aperiodic SRS transmission. If aperiodic SRS transmission is triggered, the terminal cannot determine which aperiodic SRS in the aperiodic SRS resource set is specifically transmitted.

[0210] Furthermore, if the primary scheduling cell has configured RRC parameters for Type 1B domain information, but one or more scheduled cells lack related configuration information, the behavior of the terminal in each scheduled cell indicated by the Type 1B domain information will be unclear. For example, if the primary scheduling cell has configured RRC parameters for SRS request domain information, but some scheduled cells lack aperiodic SRS resource sets, since the SRS request table in the scheduled cell is predefined by the protocol, the terminal can determine whether to trigger the aperiodic SRS resource set of the scheduled cell based on the bit state of the SRS request domain information in a single DCI, the joint SRS request table configured by the RRC parameters of the SRS request domain information, and the SRS request table of the scheduled cell. However, if the aperiodic SRS resource set of the scheduled cell is triggered, since the scheduled cell lacks aperiodic SRS resource sets, the terminal cannot determine the specific aperiodic SRS that needs to be sent. It should be noted that the lack of related configuration information in the scheduled cell may be due to the scheduled cell not supporting or enabling the Type 1B domain information corresponding / related functions. For example, if a scheduled cell does not support or disable triggering aperiodic SRS resource sets, the network device may not configure aperiodic SRS resource sets for that scheduled cell. Similarly, if a scheduled cell does not support or disable executing available time slot offsets for aperiodic SRS transmission, the network device may not configure an SRS offset list for that scheduled cell. Furthermore, if a scheduled cell does not support or disable triggering aperiodic ZP CSI-RS resource set lists, the network device may not configure aperiodic ZP CSI-RS resource set lists for that scheduled cell. Finally, if a scheduled cell does not support or disable rate matching, the network device may not configure a rate match pattern group for that scheduled cell.

[0211] Based on this, this application provides a communication method and a communication device. In the technical solution provided by this application, when the network device does not configure the RRC parameters of the Type 1B domain information in the primary scheduling cell, the bit length of the domain information in a single DCI can be considered to be the default value. Furthermore, when each scheduled cell has relevant configuration information, the scheduling information of each scheduled cell indicated by the domain information can be determined based on the default configuration information in the relevant configuration information of each scheduled cell. This allows for the agreement on the terminal behavior in each scheduled cell, thus determining the behavior of the terminal in each scheduled cell. When the RRC parameters of the Type 1B domain information are configured in the primary scheduling cell, but there are scheduled cells without relevant configuration information, the behavior of the terminal in that scheduled cell can be determined based on predefined rules. The technical solution provided by this application can determine the bit length of the domain information in a single DCI when the RRC parameters of the Type 1B domain information are not configured in the primary scheduling cell, and can determine the behavior of the terminal in the scheduled cell, improving the robustness of the communication system. The following is in conjunction with… Figures 4 to 8 The communication method and communication device provided in this application will be described.

[0212] Figure 4 This is a schematic flowchart illustrating a communication method provided in an embodiment of this application. Figure 4 As shown, the method may include S401 to S403.

[0213] S401, the network device sends RRC signaling. The RRC signaling does not indicate the first configuration information. The first configuration information contains M first elements. The first field in the first DCI is used to indicate one of the M first elements. The format of the first DCI is the DCI format used to schedule data channels of N cells. The first element includes N sub-elements. Each of the N sub-elements is used to indicate a row in the configuration table of the first parameters of one of the N cells. M and N are positive integers. Correspondingly, the terminal receives the RRC signaling.

[0214] In this embodiment, the network device can send RRC signaling in the primary scheduling cell. RRC signaling is used to instruct the terminal on configuration information related to the first DCI, such as the search space set for listening to the first DCI, CORESET, etc. Correspondingly, the terminal can receive the RRC signaling to receive the first DCI. It should be understood that the first DCI may contain one or more domain information. For example, the first DCI may contain one or more Type 1B domain information.

[0215] As an example, RRC signaling can be an RRC connection establishment message or an RRC reconfiguration message. The first DCI is a singleDCI. When the first DCI is used for downlink scheduling, the format of the first DCI can be DCI format 1_3; when the first DCI is used for uplink scheduling, the format of the first DCI can be DCI format 0_3. The first field can be called the first domain information, and the first domain information belongs to the domain information of Type 1B.

[0216] In this embodiment, RRC signaling can also be understood as higher layer signaling or higher layer parameter. Signaling can be parameters, information, messages, fields, or other descriptions, and is not limited here.

[0217] In this embodiment, the first configuration information can be understood as a joint indication table configured in the primary scheduling cell. The joint indication table is configured by the RRC parameters of the first field configured by the network device in the primary scheduling cell. The RRC signaling does not indicate the first configuration information, which can be understood as the RRC signaling not containing the RRC parameters of the first field.

[0218] When the first field is TDRA domain information, the first configuration information corresponding to the TDRA domain information can be called the joint TDRA domain table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter tdra-FieldIndexListDCI-1-3 of the TDRA domain information; if the format of the first DCI is DCI format 0_3, the first configuration information can be configured by the RRC parameter tdra-FieldIndexListDCI-0-3 of the TDRA domain information.

[0219] When the first field is ZP CSI-RS trigger indication field information, the first configuration information corresponding to the ZP CSI-RS trigger indication field information can be called the joint ZP CSI-RS trigger table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter zp-CSI-RSListDCI-1-3 of the ZP CSI-RS trigger indication field information.

[0220] When the first field is SRS request domain information, the first configuration information corresponding to the SRS request domain information can be called the combined SRS request table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter srs-RequestListDCI-1-3 of the SRS request domain information. If the format of the first DCI is DCI format 0_3, the first configuration information can be configured by the RRC parameter srs-RequestListDCI-0-3 of the SRS request domain information.

[0221] When the first field is rate matching indication field information, the first configuration information corresponding to the rate matching indication field information can be called the joint rate matching indication table. The format of the first DCI is DCI format 1_3, and the first configuration information can be configured by the RRC parameter rateMatchListDCI-1-3 of the rate matching indication field information.

[0222] When the first field is SRS offset indication field information, the first configuration information corresponding to the SRS offset indication field information can be called the joint SRS offset indication table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter srs-OffsetListDCI-1-3 of the SRS offset indication field information; if the format of the first DCI is DCI format 0_3, the first configuration information can be configured by the RRC parameter srs-OffsetListDCI-0-3 of the SRS offset indication field information.

[0223] When the first field is TCI domain information, the first configuration information corresponding to the TCI domain information can be called a combined TCI table. If the format of the first DCI is DCI format 1_3, the first configuration information can be configured by the RRC parameter tci-PresentInDCI-1-3 or tci-ListDCI-1-3 of the TCI domain information.

[0224] Taking the first field as TDRA domain information as an example, when the format of the first DCI is DCI format 1_3, the first configuration information is, for example, Figure 3The combined TDRA domain table is shown in Table 1. The first element can be understood as a row value in the combined TDRA domain table. As shown in Table 1, the combined TDRA domain table has 32 rows, so M is 32, and the first configuration information contains 32 first elements. As shown in Table 1, each row contains 4 values, so N is 4, meaning the first element contains 4 sub-elements. Assuming the first TDRA domain information in the first DCI indicates the first first element among the 32 first elements, which is the first row in the combined TDRA domain table, the first element can be understood as {0,4,3,1}, and the sub-elements can be any value in {0,4,3,1}.

[0225] In this application, N sub-elements correspond one-to-one with N cells. Each sub-element can be used to indicate a row in the configuration table of the first parameter of the corresponding cell, or in other words, each sub-element can be used to indicate the first parameter of the corresponding cell. The configuration table of the first parameter can be in the form of a table, an array, a list, or other forms, and this application does not impose any restrictions on this. The configuration table of the first parameter can also be called the configuration information of the first parameter, or the configuration list of the first parameter, or other forms, and is not restricted here. The configuration table of the first parameter of a cell can be understood as the configuration table of the first parameter configured in the cell, or the configuration table of the first parameter configured when activating BWP in the cell.

[0226] For example, when the first field is TDRA domain information or SRS request domain information, the configuration table of the first parameter is in the form of a table. When the first field is rate matching indication domain information, the configuration table of the first parameter is in the form of an array. When the first field is SRS offset indication domain information, ZP CSI-RS trigger indication domain information, or TCI domain information, the configuration table of the first parameter is in the form of a list. In this embodiment, the configuration table of the first parameter in each cell can be predefined by the protocol or configured by the network device, and there is no restriction here.

[0227] Wherein, when the first field is TDRA domain information, the configuration table of the first parameter can be a TDRA table configured in the cell for uplink or downlink scheduling (e.g., Figure 3 Table 2 in the table or the data channel time-domain resource allocation list. The first parameter can be understood as the time-domain resource information of the cell's data channels.

[0228] When the first field is the ZP CSI-RS trigger indicator field information, the configuration table for the first parameter can be an aperiodic ZP CSI-RS resource set list (aperiodicZP-CSI-RS-ResourceSetsToAddModList). The first parameter can be understood as either not triggering the aperiodic ZP CSI-RS resource set, or as specifying the aperiodic ZP CSI-RS to be sent when triggering the aperiodic ZP CSI-RS resource set.

[0229] When the first field is SRS request information, the configuration table for the first parameter can be a predefined SRS request table, such as Table 7.3.1.1.2-24 in Technical Specification (TS) 38.212-i30. The first parameter can be understood as not triggering an SRS resource set (SRS-ResourceSet) or an aperiodic SRS resource set, or it can be understood as triggering an SRS resource set or an aperiodic SRS resource set, or it can be understood as specifying which SRS resource set to trigger when triggering an SRS resource set or an aperiodic SRS resource set. It should be noted that when the first field triggers the cell's SRS resource set or an aperiodic SRS resource set, the specific SRS or aperiodic SRS sent can be determined based on the configuration table for the first parameter and the SRS resource set or resource type (resourceType) configured by the network device through RRC parameters as an aperiodic SRS resource set.

[0230] When the first field is rate matching indication information, the configuration table for the first parameter can be rate matching pattern group 1 (rateMatchPatternGroup1) and / or rate matching pattern group 2 (rateMatchPatternGroup2). The first parameter can be understood as the cell's rate matching resource (RMR) or rate matching pattern group. A rate matching pattern group can contain one or more RMRs.

[0231] When the first field is the channel sounding signal offset indication field information, the configuration table for the first parameter can be either an available slot offset list or an available slot offset. The first parameter can be understood as the available slot offset value for the terminal to send aperiodic SRS in the cell, that is, the additional offset value applied to the aperiodic SRS after the terminal performs an offset based on the slot offset parameter.

[0232] When the first field is TCI field information, the configuration table for the first parameter can be a TCI state list (tci-StatesToAddModList or tci-ListDCI-1-3) and / or a TCI state in the DCI (tci-PresentInDCI). The first parameter can be understood as the QCL assumption of the cell's data channel.

[0233] It should be noted that the number N of cells scheduled by the first DCI in this scheme can be understood as the maximum number of cells that the first DCI can schedule simultaneously, or as the maximum number of cells that can be configured in a cell set. Assuming the first DCI can schedule K cells simultaneously, where K is a positive integer less than or equal to N, then the first parameter corresponding to each of the K cells belongs to the first parameter indicated by K sub-elements out of N sub-elements in the first element. The K sub-elements correspond one-to-one with the K cells, and each sub-element in the K sub-elements indicates the first parameter of the corresponding cell. For example, if a cell set contains 4 cells, then the maximum number of cells that the first DCI can schedule simultaneously is 4, and N equals 4. The first configuration information contains 16 first elements, so M equals 16. Any one of the 16 first elements contains 4 sub-elements, and each sub-element can indicate the first parameter of a cell. When the first DCI schedules two of these four cells simultaneously, such as cell 1 and cell 4, then K = 2. When the first field in the first DCI indicates the second of 16 first elements, the first parameter corresponding to cell 1 can be indicated by the first sub-element of the second first element, and the first parameter corresponding to cell 4 can be indicated by the fourth sub-element of the second first element. The first DCI can indicate the number of cells scheduled by the first DCI through the scheduled cells indicator field or the frequency domain resource assignment (FDRA) field information. If the number of scheduled cells is K, then these K cells can be called scheduled cells. The terminal can determine the scheduled cells based on the cell index of the scheduled cells and / or the order of the scheduled cells in the cell set.

[0234] S402, the network device sends the first DCI. Correspondingly, the terminal receives the first DCI.

[0235] In this embodiment, after sending the configuration information related to the first DCI, the network device can send the first DCI. Correspondingly, the terminal can receive the first DCI.

[0236] S403, the terminal determines that the bit length of the first field in the first DCI is the first value.

[0237] In this embodiment, after receiving the RRC signaling, the terminal can determine whether the RRC signaling indicates the first configuration information. If the RRC signaling indicates the first configuration information, the terminal can determine the bit length of the first field in the first DCI based on the first configuration information, determine the bit state of the first field, and then determine the scheduling information indicated by the first field.

[0238] If the RRC signaling does not indicate the first configuration information, the terminal can determine that the bit length of the first field in the first DCI is the first value. This first value can be predefined by the protocol or configured by the network device; no limitation is made here.

[0239] As an example, the first value can be 0. In this example, when the RRC signaling does not include the RRC parameters of the first field, it is assumed that the first field does not occupy any bits in the first DCI, in order to save resources.

[0240] In this embodiment, when the RRC signaling does not contain RRC parameters with Type 1B field information, the bit length occupied by the field information in a single DCI can be considered as the first value, thereby enabling the terminal to determine the size of the field information and improving the robustness of the communication system.

[0241] In one possible implementation, the RRC signaling sent by the network device in the primary scheduling cell does not include the RRC parameters of the first field, or in other words, the RRC signaling sent by the network device in the primary scheduling cell does not indicate the first configuration information corresponding to the first field. However, when each scheduled cell has relevant configuration information, the terminal can determine the indication information of the first field in each scheduled cell according to predefined rules and perform the corresponding operation based on the indication information. The relevant configuration information of each scheduled cell can be understood as... Figure 4 The configuration table for the first parameter described herein. For example, the first parameter of the scheduled cell and the behavior of the terminals in the scheduled cell can be determined based on the default information in the configuration table for the first parameter of the scheduled cell.

[0242] In this embodiment, the terminal behavior indicated by the TDRA domain information in each scheduled cell can be understood as the terminal transmitting data channels on the time-domain resources of the scheduled data channels indicated by the TDRA domain information in each scheduled cell. The terminal behavior indicated by the rate matching indication domain information in each scheduled cell can be understood as whether the terminal receives PDSCH on the indicated RMR in each scheduled cell. The terminal behavior indicated by the ZP CSI-RS trigger indication domain information in each scheduled cell can be understood as whether an aperiodic ZP CSI-RS resource set is triggered in each scheduled cell, and if so, which ZP CSI-RS in the aperiodic ZP CSI-RS resource set is specifically triggered. The terminal behavior indicated by the SRSrequest domain information in each scheduled cell can be understood as whether the terminal is triggered to send an aperiodic SRS in the aperiodic SRS resource set in each scheduled cell, and if so, which aperiodic SRS in the aperiodic SRS resource set is specifically triggered. The SRS offset indication field information indicates the terminal's behavior in each scheduled cell. This can be understood as whether the terminal performs an offset on the aperiodic SRS in the aperiodic SRS resource set transmitted in each scheduled cell, and if so, what the offset of the available time slots for the aperiodic SRS is. The TCI field information indicates the terminal's behavior in each scheduled cell. This can be understood as the quasi-co-location (QCL) assumption used by the terminal in each scheduled cell for PDSCH reception. It should be understood that the first parameter of the cell corresponds to the behavior of the terminal in the cell; in other words, determining the first parameter of the cell determines the behavior of the terminal in the cell.

[0243] When the first field is TDRA domain information, if the primary scheduling cell does not configure the RRC parameter for TDRA domain information, or in other words, the primary scheduling cell does not configure the first configuration information corresponding to TDRA domain information, the terminal can determine the time-domain resource information of the data channel for each scheduled cell based on the row with index 0 in the TDRA table configured in the active BWP of each scheduled cell, or the first row in the TDRA table. The first row can be replaced with the second row or other rows in the TDRA table, without restriction. Specifically, the TDRA table configured in the cell for downlink scheduling can be determined as follows: When the PDSCH configuration (PDSCH-Config) contains a PDSCH time-domain resource allocation list, the terminal can determine the TDRA table based on the PDSCH time-domain resource allocation list in the PDSCH configuration. When the PDSCH configuration does not contain a PDSCH time-domain resource allocation list, but the common PDSCH configuration (PDSCH-ConfigCommon) does contain a PDSCH time-domain resource allocation list, the terminal can determine the TDRA table based on the PDSCH time-domain resource allocation list in the common PDSCH configuration. When neither the PDSCH configuration nor the public PDSCH configuration contains a PDSCH time domain resource allocation list, the terminal can determine the TDRA table based on the protocol's predefined TDRA table. For example, the TDRA table can be the default PDSCH time domain resource allocation A.

[0244] When the first field is SRS request information, if the primary scheduling cell does not configure the RRC parameter for the SRS request information, or in other words, the primary scheduling cell does not configure the first configuration information corresponding to the SRS request information, the terminal can determine whether to trigger an aperiodic SRS resource set based on the Q-th bit status (codepoint) in the SRS request table predefined in the protocol of each scheduled cell or the active BWP in each scheduled cell, or the Q-th row in the SRS request table. If an aperiodic SRS resource set is triggered, the terminal can then determine which aperiodic SRS resource set to trigger. Q is a positive integer, less than or equal to the number of rows in the SRS request table. For example, if the SRS request information occupies 2 bits, the first bit status in the SRS request table, for example, is "00", indicating that an aperiodic SRS resource set is not triggered, or in other words, the aperiodic SRS within the aperiodic SRS resource set is not triggered. The second bit status in the SRS request table, for example, is "01", indicating that an aperiodic SRS resource set is triggered. The terminal needs to further determine the specific aperiodic SRS to be sent based on the SRS request table and the aperiodic SRS resource set.

[0245] When the first field is ZP CSI-RS trigger indication field information, if the RRC parameter of the ZP CSI-RS trigger indication field information is not configured in the primary scheduling cell, or in other words, the first configuration information corresponding to the ZP CSI-RS trigger indication field information is not configured in the primary scheduling cell, the terminal can determine whether to trigger an aperiodic ZP CSI-RS resource set based on the Wth bit state (codepoint) in the ZP CSI-RS trigger resource set list configured in the active BWP of each scheduled cell, and determine the specific aperiodic ZP CSI-RS to be sent when the aperiodic ZP CSI-RS resource set is triggered. W is a positive integer, and W is less than or equal to the number of bit states contained in the ZP CSI-RS trigger resource set list.

[0246] In some embodiments, the behavior of the terminal indicated by the domain information in each scheduled cell can be determined based on the optional or mandatory characteristics of the domain information. The domain information with mandatory characteristics includes TDRA domain information, ZP CSI-RS trigger indication domain information, SRS request domain information, and TCI domain information. The domain information with optional characteristics includes rate matching indication domain information and SRS offset indication domain information.

[0247] Taking TDRA domain information as an example, the mandatory characteristic is explained. During communication, the time-domain resource information of the data channel of the scheduled cell indicated by TDRA is a relatively important piece of information. In other words, the terminal considers the time-domain resource information of the data channel to be essential; without it, the terminal cannot complete data transmission. Therefore, TDRA domain information can be considered a mandatory characteristic, or the RRC parameters of TDRA domain information must be configured. Taking rate matching indication domain information as an example, the optional characteristic is explained. During communication, if the terminal does not perform rate matching, it will not affect the normal operation of the communication system. Therefore, rate matching can be considered an optional characteristic.

[0248] In some embodiments, domain information with mandatory characteristics can be understood as domain information without corresponding or related terminal capability information, or in other words, whether or not the RRC parameter of this domain information is configured does not depend on the terminal capability information. For example, if TDRA domain information does not have corresponding terminal capability information, then TDRA domain information can be considered to have mandatory characteristics.

[0249] In some embodiments, domain information with optional characteristics can be understood as domain information with corresponding or related terminal capability information, or in other words, whether to configure the RRC parameter of the domain information can be determined based on the terminal capability information corresponding to the domain information. Taking rate matching indication domain information as an example, the network device can determine whether to configure the RRC parameter of the rate matching indication domain information based on whether the terminal reports rate matching-related terminal capability information (e.g., feature group FG5-27, or rate matching resource set dynamics). For example, the terminal can indicate that it does not support rate matching by not reporting rate matching-related terminal capability information, or the terminal can indicate that it does not support rate matching by reporting rate matching-related capability information, so that the network device does not need to configure the RRC parameter of the rate matching indication domain information.

[0250] As an example, when domain information has a mandatory characteristic, if the RRC parameter of this type of domain information is not configured in the primary scheduling cell, the terminal can consider the received single DCI as a false alarm DCI and discard the received DCI.

[0251] As an example, when the domain information has a mandatory characteristic, the terminal can determine the first parameter of each scheduled cell according to the configuration table of the first parameter of each scheduled cell, thereby determining the terminal's behavior or operation in each scheduled cell as indicated by this type of domain information. For details, please refer to the relevant description in the foregoing embodiments, which will not be repeated here.

[0252] As an example, when domain information is an optional feature, the terminal may not perform the actions indicated by that type of domain information in each scheduled cell.

[0253] When the first field is the rate matching indication field information, if the RRC parameter rateMatchListDCI-1-3 of the rate matching indication field information is not configured in the primary scheduling cell, or in other words, if the first configuration information corresponding to the rate matching indication field information is not configured in the primary scheduling cell, the terminal does not perform rate matching on RMR resources or rate matching pattern groups when receiving PDSCH. Instead, it receives PDSCH based on the time-domain resource information indicated by the TDRA field information in the first DCI and the frequency-domain resource information indicated by the frequency-domain resource allocation indication field information. For example, when the terminal performs rate matching on RMR resources, if the time-frequency resource information indicated by the first DCI overlaps with the RMR resources, the terminal can receive PDSCH on a portion of the time-frequency resources of the PDSCH indicated by the first DCI. The portion of the time-frequency resources is the time-frequency resources other than those overlapping with the RMR resources. When the terminal does not perform rate matching on RMR resources, if the time-frequency resource information indicated by the first DCI overlaps with the RMR resources, the terminal can receive PDSCH on the resources that overlap with the RMR in the time-frequency resources indicated by the first DCI.

[0254] Figure 5 A schematic diagram illustrating a rate matching method provided in this application. Figure 5 (a) is a schematic diagram illustrating the rate matching operation performed on the RMR resources of each scheduled cell. Figure 5 (b) is a schematic diagram illustrating that rate matching is not performed on the RMR resources of each scheduled cell. Figure 5 The time-frequency resources indicated by the single DCI overlap with the RMR resources. It can be seen that when the terminal does not perform rate matching, the time-frequency resources used to receive PDSCH are the time-frequency resources indicated by the single DCI; when the terminal performs rate matching, the resources used to receive PDSCH are the time-frequency resources indicated by the single DCI, excluding the time-frequency resources that overlap with the RMR resources.

[0255] When the first field is SRS offset indication field information, if the RRC parameter for SRS offset indication field information is not configured in the primary scheduling cell, or if the first configuration information corresponding to SRS offset indication field information is not configured in the primary scheduling cell, the terminal will not perform available time slot offset for aperiodic SRS transmissions on each scheduled cell, or in other words, the available time slot offset value for aperiodic SRS transmissions in each scheduled cell will be 0. The available time slot offset value refers to the additional offset value performed based on the time slot offset parameter (slotOffset), which is the offset value configured in the available time slot offset list (availableSlotOffsetList).

[0256] Figure 6 A schematic diagram illustrating an SRS offset provided for this application. (See attached diagram.) Figure 6 As shown, regardless of whether the RRC parameter srs-OffsetListDCI-1-3 is configured in the primary scheduling cell, the terminal will perform slot offset on the aperiodic SRS resources in the scheduled cell according to the slotOffset configured in the aperiodic SRS resource set configuration parameters (e.g., the SRS resource set). Figure 6 The time slot offset is from the time slot v that triggered the first DCI to time slot v+2, where v is a positive integer. The time slot after the time slot offset based on slotOffset can be called the reference time slot. If the primary scheduling cell has the RRC parameter srs-OffsetListDCI-1-3 configured, the terminal can further perform an available slot offset based on the reference time slot, such as... Figure 6 The terminal shifts from time slot v+2 to time slot v+7 and transmits aperiodic SRS in time slot v+7. ​​If the RRC parameter srs-OffsetListDCI-1-3 is not configured in the primary scheduling cell, the terminal does not need to perform an available time slot offset for aperiodic SRS, and in this case, the terminal can transmit aperiodic SRS in time slot v+2. Figure 6 As can be seen, the slot offset value based on slotOffset is 2, and the available slot offset value is 5.

[0257] In one possible implementation, the RRC signaling sent by the network device in the primary scheduling cell includes the RRC parameters of the first field, or in other words, the RRC signaling sent by the network device in the primary scheduling cell indicates the first configuration information corresponding to the first field. However, if a scheduled cell (such as the first cell) does not have the relevant configuration information, the terminal can determine the terminal's behavior in the first cell according to predefined rules. The number of first cells can be one or more, and is not limited here.

[0258] When the first field is SRS request field information, if the primary scheduling cell has configured RRC parameters for SRS request field information, or if the primary scheduling cell has configured the first configuration information corresponding to SRS request field information, but the first cell does not have a non-periodic SRS resource set configured, the terminal can ignore or drop / discard the first sub-element of the first element in the joint SRS request table indicated by the SRS request field information in the first DCI. The first sub-element is used to indicate whether the non-periodic SRS resource set is triggered in the first cell, or the terminal can consider the bit state of the SRS request field information in the first cell or the active BWP in the first cell to be the first bit state in the SRS request table predefined by the protocol in the first cell, that is, the value of the SRS request field information in the first cell is 0, or the terminal does not trigger the non-periodic SRS resource set.

[0259] When the first field is ZP CSI-RS trigger indication field information, if the primary scheduling cell has configured the RRC parameter of the ZP CSI-RS trigger indication field information, or if the primary scheduling cell has configured the first configuration information corresponding to the ZP CSI-RS trigger indication field information, but the first cell does not have a ZP CSI-RS trigger resource set list configured, the terminal can ignore or discard the first sub-element of the first element in the joint ZP CSI-RS trigger table indicated by the ZP CSI-RS trigger indication field information in the first DCI. The first sub-element is used to indicate whether the non-periodic ZP CSI-RS resource set is triggered in the first cell, and to determine the specific non-periodic ZP CSI-RS to be sent when triggering the non-periodic ZP CSI-RS resource set. In other words, the terminal can consider the bit state of the ZP CSI-RS trigger indication field information in the first cell or the activated BWP in the first cell to be the first bit state in the ZP CSI-RS trigger resource set list in the first cell, that is, the value of the ZP CSI-RS trigger indication field information in the first cell is 0, or the terminal does not trigger the non-periodic ZP CSI-RS resource set.

[0260] When the first field is the rate matching indication field information, if the primary scheduling cell has the RRC parameter rateMatchListDCI-1-3 configured with the rate matching indication field information, or if the primary scheduling cell has the first configuration information corresponding to the rate matching indication field information, but the first cell does not have a rate matching pattern group configured, the terminal can ignore or discard the first sub-element of the first element in the joint rate matching indication table indicated by the rate matching indication field information in the first DCI. The first sub-element is used to indicate the RMR resources or rate matching pattern group of the first cell. In other words, the terminal can receive the PDSCH of the first cell without performing rate matching, but based on the time domain resource information indicated by the TDRA field information and the frequency domain resource allocation indication field information indicated by the frequency domain resource allocation indication field information in the first DCI, and receive the PDSCH accordingly. For details, please refer to the description in the foregoing embodiment regarding the terminal not performing rate matching when the RRC parameter rateMatchListDCI-1-3 is not configured in the primary scheduling cell, which will not be repeated here.

[0261] When the first field is SRS offset indication field information, if the primary scheduling cell has an RRC parameter configured for the SRS offset indication field information, or if the primary scheduling cell has first configuration information corresponding to the SRS offset indication field information, but the first cell does not have an SRS offset list (such as an available time slot offset list or available time slot offset), the terminal can ignore the first sub-element of the first element in the joint SRS offset indication table indicated by the SRS offset indication field information in the first DCI. The first sub-element is used to indicate the available time slot offset value for aperiodic SRS transmission in the first cell, or in other words, the terminal does not perform available time slot offset for aperiodic SRS transmission in the first cell, or the available time slot offset value for aperiodic SRS transmission in the first cell is 0. For details, please refer to the description in the foregoing embodiment where the terminal does not perform available time slot offset for aperiodic SRS transmission in each scheduled cell when the ZP CSI-RS trigger indication field information RRC parameter is not configured in the primary scheduling cell, which will not be repeated here.

[0262] Because the processing method for TCI field information differs from that of the aforementioned Type 1B field information, TCI field information will be described separately below. TCI field information is used to indicate the beam or QCL assumption of the data channel of the scheduled cell. The following explanation uses the QCL assumption as an example.

[0263] Regarding TCI domain information, if the primary scheduling cell does not have RRC parameters configured for TCI domain information, but the scheduled cell has relevant configuration information for TCI domain information, the terminal cannot determine the QCL assumption for data channel transmission in the scheduled cell. Similarly, if the primary scheduling cell has RRC parameters configured for TCI domain information, but the first cell does not have relevant configuration information for TCI domain information, the terminal also cannot determine the QCL assumption for data channel transmission in the first cell. The following describes the TCI domain information in these two scenarios.

[0264] In this application embodiment, a new capability is introduced for the terminal regarding TCI domain information. For example, in R18 multi-carrier scheduling or multi-cell scheduling, the terminal supports determining or obtaining the default QCL assumption of the PDSCH for DCI format 1_3 scheduling. This capability can be represented in English as MC-DCI_DefaultQCL-r18. For ease of description, this capability can be referred to as the first capability.

[0265] In this embodiment, the terminal supports the first capability and can send first information to the network device. If the terminal does not support the first capability, it may not send the first information to the network device, or the terminal capability information (e.g., RRC parameter UE-NR capability) sent by the terminal to the network device may not include the first capability. The first information is used to indicate whether the terminal can be configured with second information, and the second information is used to indicate whether the default QCL assumption function of the data channel of each scheduled cell is enabled.

[0266] When the terminal supports the first capability, the network device can determine whether to send the second information based on the first information sent by the terminal. If the network device sends the second information, it is assumed that the network device has indicated that the default QCL assumption function of the data channel of each scheduled cell is enabled. If the network device does not send the second information, it is assumed that the network device has either disabled or disabled the default QCL assumption function of the data channel of each scheduled cell.

[0267] When the second information indicates that the default QCL assumption function of the data channel of each scheduled cell is enabled, the second information may indicate, contain, or carry the parameter enable the default beam of DCI format-1-3 (enableDefaultBeamForDCI-1-3), or the parameter enable the default beam of multi-cell scheduling (enableDefaultBeamForMulti-cellScheduling). The second information, or the parameter enableDefaultBeamForDCI-1-3, or the parameter enableDefaultBeamForMulti-cellScheduling, can be understood as a switch for the network device to enable the default QCL assumption function.

[0268] As an example, the default QCL assumption for the data channel of each scheduled cell can be the TCI state with the smallest index among the activated TCI states in the active BWP of the scheduled cell. In some embodiments, the default QCL assumption can also be the TCI state with the largest index among the activated TCI states in the active BWP of the scheduled cell, or other states, without limitation.

[0269] As an example, the default QCL assumption is that there is a first QCL relationship between the data channel of the scheduled cell and the PDCCH carrying the first DCI in the master scheduling cell. The terminal assumes that there is a second relationship between the control resource set carrying the PDCCH and the SS / PBCH of the master scheduling cell, and the type of the second relationship is Type C, or QCL-Type C.

[0270] In this embodiment, the default QCL assumptions for the data channels of each scheduled cell can be the same or different, and this is not a restriction. The default QCL assumptions can be predefined by the protocol or configured by the network device, and this is not a restriction.

[0271] In one possible approach, when the terminal supports the first capability, if the RRC parameters for the TCI domain information are not configured in the primary scheduling cell, and / or if the relevant configuration information for the TCI domain information is not configured in the first cell, the terminal can be configured with the second information by default, or in other words, the default QCL assumption function for the data channel of each scheduled cell can be enabled by default. The terminal can determine or obtain the default QCL assumption for the data channel of each scheduled cell based on the first capability.

[0272] In one possible implementation, when the terminal supports the first capability, the terminal can send first information to the network device. If the network device has not configured the RRC parameters of the TCI field information in the primary scheduling cell, and / or if the network device has not configured the relevant configuration information of the TCI field information in the first cell, the network device can send second information to the terminal. The second information indicates that the default QCL assumption function of the data channel of each scheduled cell is enabled. After receiving the second information, the terminal can determine or obtain the default QCL assumption of the data channel of each scheduled cell based on the first capability.

[0273] In one possible implementation, when the terminal supports the first capability, the terminal can send first information to the network device. If the network device does not send second information after receiving the first information, the network device can set / configure the RRC parameter of the TCI domain information to enable it. It should be noted that if the network device sets or configures the RRC parameter of the TCI domain information to enable it, it means that the first DCI will definitely contain the TCI domain information, or that the primary scheduling cell will definitely configure the RRC parameter of the TCI domain information.

[0274] In one possible implementation, when the terminal does not support the first capability, the terminal expects the network device to enable the RRC parameters for the TCI domain information. Alternatively, the terminal expects the network device to configure the RRC parameters for the TCI domain information in the primary scheduling cell. In other words, the network device must enable the RRC parameters for the TCI domain information in the RRC signaling of the control resource set of the first DCI heard on the primary scheduling cell, thus ensuring that the RRC parameters for the TCI domain information are always configured in the primary scheduling cell. The RRC parameters for the TCI domain information can be included in the CORESET configuration information.

[0275] In one possible implementation, when the terminal does not support the first capability, the terminal expects the network device to enable the configuration information of the TCI domain information in each scheduled cell, or in other words, the terminal expects the network device to enable the configuration information of the TCI domain information in each scheduled cell, or the network device must enable the configuration information of the TCI domain information in each scheduled cell, so that the configuration information of the TCI domain information will definitely be configured in each scheduled cell.

[0276] In this embodiment, when the RRC parameter for the Type1B domain information is not configured in the primary scheduling cell, the size of the Type1B domain information can be determined to be a first value, ensuring that the network device and the terminal have a consistent understanding of the size of the Type1B domain information. Furthermore, based on the configuration table of the first parameters of each scheduled cell, the first parameters and terminal behavior in each scheduled cell can be determined, ensuring that the network device and the terminal have a consistent understanding of the terminal behavior on each scheduled cell indicated by the Type1B domain information. This improves the robustness of the communication system without affecting the corresponding functions on each scheduled cell, and provides high configuration flexibility for the network device.

[0277] One possible approach is to add protocol configuration constraints, such as stipulating that the RRC parameters for Type 1B domain information are mandatory, or that terminals expect to be configured with the RRC parameters for Type 1B domain information, or that network devices will always configure the RRC parameters for Type 1B domain information in the primary scheduling cell. This allows terminals to determine the size of the Type 1B domain information. This implementation ensures that network devices and terminals have a consistent understanding of the size of the Type 1B domain information and the behavior of terminals in each scheduled cell indicated by the Type 1B domain information, improving the robustness of the communication system. It should be understood that in this approach, network devices will always configure the RRC parameters for Type 1B domain information, reducing the configuration flexibility of network devices.

[0278] Figure 7 This is a schematic diagram of the structure of a communication device provided in one embodiment of this application. Figure 7 The illustrated apparatus 700 can be used to implement the various steps / operations performed by a terminal or network device in the foregoing method embodiments. For example... Figure 7 As shown, the device 700 may include a communication unit 710 and a processing unit 720.

[0279] As an example, device 700 can be used to implement Figure 4 The methods shown include the various steps / operations performed by the terminal. For example, the communication unit 710 can be used to implement the operations performed by the terminal in S401 and S402; the processing unit 720 can be used to implement S403.

[0280] As an example, device 700 can be used to implement Figure 4 The methods illustrated include the various steps / operations performed by the network device. For example, communication unit 710 can be used to implement the operations performed by the network device in S401 and S402. It should be understood that processing unit 720 can perform the operations performed by the network device in the foregoing embodiments, such as setting the RRC parameter of TCI domain information to enable.

[0281] Figure 8 This is a schematic diagram of the structure of a communication device provided in another embodiment of this application. Figure 8 The apparatus 800 shown can be used to implement the method executed by a terminal or network device in any of the foregoing embodiments.

[0282] like Figure 8 As shown, the device 800 in this embodiment includes a memory 810, a processor 820, a communication interface 830, and a bus 840. The memory 810, processor 820, and communication interface 830 are interconnected via the bus 840.

[0283] The memory 810 can be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 810 can store programs, which are then executed by the processor 820 when the program stored in the memory 810 is run. Figure 4 The steps in the method shown are performed by the terminal or network device.

[0284] The processor 820 may be a general-purpose central processing unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, used to execute relevant programs to implement the communication method shown in the embodiments of this application.

[0285] The processor 820 can also be an integrated circuit chip with signal processing capabilities. In implementation, each step of the communication method shown in the embodiments of this application can be completed by the integrated logic circuitry in the processor 820 or by software instructions.

[0286] The processor 820 described above can also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor.

[0287] The steps of the method disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 810. The processor 820 reads the information in memory 810 and, in conjunction with its hardware, completes the functions required by the units included in the communication device of this application. For example, it can execute... Figure 4 The steps / functions performed by the terminal or network device in the method shown.

[0288] Alternatively, the memory 810 and the processor 820 can be integrated together.

[0289] The communication interface 830 can use, but is not limited to, transceivers to enable communication between the device 800 and other devices or apparatuses.

[0290] Bus 840 may include a pathway for transmitting information between various components of device 800 (e.g., memory 810, processor 820, communication interface 830).

[0291] Some embodiments of this application also provide a computer program product that, when run on a processor, can implement the methods shown in the foregoing embodiments. Some embodiments of this application also provide a computer-readable storage medium containing computer instructions that, when run on a processor, can implement the methods shown in the foregoing embodiments.

[0292] It should be noted that the modules or components shown in the above embodiments can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), etc. Furthermore, when a module is implemented by a processing element calling program code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors capable of calling program code, such as a controller. Additionally, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0293] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, software modules, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. 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. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. 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 integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0294] The term "multiple" in this document refers to two or more. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the preceding and following related objects; in formulas, " / " indicates a "division" relationship. Additionally, it should be understood that in the description of this application, words such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order.

[0295] In the embodiments of this application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of priority or size among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0296] It is understood that the terms "exemplary" or "for example" used herein are intended to mean as an example, illustration, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0297] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0298] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply 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 this application.

Claims

1. A communication method, characterized in that, The method is applied to a terminal, and the method includes: Receive Radio Resource Control (RRC) signaling, wherein the RRC signaling does not indicate first configuration information, the first configuration information includes M first elements, the first field in the first downlink control information (DCI) is used to indicate one of the M first elements, the format of the first DCI is a DCI format for scheduling data channels of N cells, the first element includes N sub-elements, each of the N sub-elements is used to indicate a row in the configuration table of the first parameters of one of the N cells, where M and N are positive integers; Receive the first DCI; The bit length of the first field in the first DCI is determined to be a first value.

2. The method according to claim 1, characterized in that, The first value is 0.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The first parameter of a cell is determined based on the first row of the configuration table of the first parameter of the cell.

4. The method according to claim 3, characterized in that, The first field is any one of the following: a time-domain resource allocation indication field, a zero-power channel state information reference signal trigger indication field, or a channel sounding signal request field.

5. The method according to claim 1 or 2, characterized in that, When the first field is a rate matching indicator field, the method further includes: Based on the time-domain resource allocation indication field in the first DCI, the time-domain resources of the first data channel are determined, and the first data channel is the data channel of the first cell among the N cells; Based on the frequency domain resource allocation indication field in the first DCI, the frequency domain resources of the first data channel are determined; The first data channel is transmitted over the time domain resources and the frequency domain resources.

6. The method according to claim 1 or 2, characterized in that, When the first field is a channel sounding signal offset indication field, the offset value of the channel sounding signal for each of the N cells is 0.

7. The method according to claim 1 or 2, characterized in that, When the first field is a Transport Configuration Indicator (TCI) field, the method further includes: Send a first message, which indicates that the terminal can be configured with a second message, which indicates whether to enable the default quasi-co-location QCL assumption function for the data channel of each of the N cells.

8. The method according to claim 7, characterized in that, The default QCL assumption includes any of the following: The TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or Each cell's data channel has a first QCL relationship with the downlink physical control channel (PDCCH) of the primary scheduling cell among the N cells, and the PDCCH is used to carry the first DCI.

9. The method according to claim 8, characterized in that, The control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block. The type of the second QCL relationship is type C. The terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

10. The method according to any one of claims 7 to 9, characterized in that, The method further includes: Receive the second information, which indicates that the default QCL assumption function is enabled.

11. A communication method, characterized in that, The method is applied to a network device, and the method includes: Send Radio Resource Control (RRC) signaling, wherein the RRC signaling does not indicate first configuration information, the first configuration information includes M first elements, the first field in the first downlink control information (DCI) is used to indicate one of the M first elements, the format of the first DCI is a DCI format for scheduling data channels of N cells, the first element includes N sub-elements, each of the N sub-elements is used to indicate a row in the configuration table of the first parameters of one of the N cells, where M and N are positive integers; Send the first DCI.

12. The method according to claim 11, characterized in that, The first field is any one of the following: time-domain resource allocation indication field, zero-power channel state information reference signal trigger indication field, channel sounding signal request field, rate matching indication field, channel sounding signal offset indication field, or transmission configuration indication (TCI) field.

13. The method according to claim 12, characterized in that, When the first field is the TCI field, the method further includes: Receive first information, the first information being used to indicate that the terminal can be configured with second information, the second information being used to indicate whether to enable the default quasi-co-address QCL assumption function for the data channel of each of the N cells.

14. The method according to claim 13, characterized in that, The default QCL assumption includes any of the following: The TCI state with the smallest index among the active TCI states in the active bandwidth portion of each cell; or Each cell's data channel has a first QCL relationship with the downlink physical control channel (PDCCH) of the primary scheduling cell among the N cells, and the PDCCH is used to carry the first DCI.

15. The method according to claim 14, characterized in that, The control resource set carrying the PDCCH has a second QCL relationship with the synchronization signal and physical broadcast channel block. The type of the second QCL relationship is type C. The terminal accesses the main scheduling cell based on the synchronization signal and physical broadcast channel block.

16. The method according to any one of claims 13 to 15, characterized in that, The method further includes: Send the second message, which indicates that the default QCL assumption function is enabled.

17. A communication device, characterized in that, It includes various functional modules for implementing the method as described in any one of claims 1 to 16.

18. A computer program product, characterized in that, It includes computer program code that, when run on a computer, causes the computer to perform the method as described in any one of claims 1 to 16.

19. A computer-readable medium, characterized in that, The computer-readable medium stores program code for computer execution, the program code including instructions for performing the method as described in any one of claims 1 to 16.

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