Communication method and device

Abstract

A communication method and apparatus, relating to the field of wireless communications, the method comprising: an access network device sending a configuration message to a terminal device, the configuration message comprising configuration information of a plurality of secondary cells, the configuration information of each secondary cell comprising a group identifier corresponding to the secondary cell, and different secondary cells corresponding to different group identifiers. And the access network equipment sends downlink control information to the terminal equipment, the downlink control information comprises an auxiliary cell dormancy indication, the auxiliary cell dormancy indication comprises a plurality of bits corresponding to the plurality of group identifiers, and the value of each bit is used for indicating whether the state of the auxiliary cell corresponding to the group identifier corresponding to the bit is an activated state or a dormant state. In the scheme, access network equipment can flexibly indicate the states of a plurality of auxiliary cells respectively corresponding to a plurality of group identifiers by setting the values of a plurality of bits corresponding to a plurality of group identifiers in the auxiliary cell dormancy indication, so that different transmission requirements of terminal equipment for receiving downlink data are met.

Description

Technical Field

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

[0002] Carrier aggregation (CA) is used to aggregate two or more component carriers (CCs) to support a larger transmission bandwidth. For example, the maximum bandwidth supported by carrier aggregation can be 100 megahertz (MHz). The bandwidth of each component carrier can be 5MHz, 10MHz, 15MHz, 20MHz, etc. The component carrier can be simply referred to as a carrier.

[0003] During downlink data transmission, access network equipment can usually support aggregation of 5 or more carriers, while terminal equipment can only support aggregation of two carriers. Therefore, limited by the capabilities of the terminal equipment, the access network equipment can only configure two carriers for aggregation for the terminal equipment. The transmission requirements of downlink data of the terminal equipment will change over time. For example, two smaller carriers (such as 5MHz and 10MHz) are required for transmission in the first time period, while two larger carriers (such as 15MHz and 20MHz) are required for transmission in the second time period. As a result, the current carrier aggregation method cannot meet the different transmission requirements of terminal equipment for downlink data in different time periods. Summary of the invention

[0004] The present application provides a communication method and apparatus for meeting the different transmission requirements of terminal devices for downlink data in different time periods.

[0005] In a first aspect, the present application provides a communication method, which can be implemented by interaction between a first communication device and a second communication device, wherein the first communication device can be a terminal device or a module in the terminal device, and the second communication device can be an access network device or a module in the access network device. For ease of description, the following is an example in which the first communication device is a terminal device and the second communication device is an access network device.

[0006] The method includes: an access network device sends a configuration message to a terminal device, and correspondingly, the terminal device receives the configuration message from the access network device, wherein the configuration message includes configuration information of a first secondary cell and configuration information of a second secondary cell, the configuration information of the first secondary cell includes a first group identifier corresponding to the first secondary cell, and the configuration information of the second secondary cell includes a second group identifier corresponding to the second secondary cell, and the first group identifier and the second group identifier are different. Under the condition that the first secondary cell is in an activated state and the second secondary cell is in a dormant state, the access network device sends downlink control information to the terminal device, and correspondingly, the terminal device receives the downlink control information from the access network device, the downlink control information includes a secondary cell dormancy indication, and the secondary cell dormancy indication is used to indicate that the first secondary cell corresponding to the first group identifier is set to a dormant state, and the second secondary cell corresponding to the second group identifier is set to an activated state.

[0007] In the above technical solution, the access network device determines that the first secondary cell corresponds to the first group identifier, and the second secondary cell corresponds to the second group identifier. Accordingly, the access network device can send a secondary cell sleep indication to the terminal device, and the secondary cell sleep indication is used to indicate the state of the first secondary cell corresponding to the first group identifier, and the state of the second secondary cell corresponding to the second group identifier. This helps to flexibly indicate the state of the secondary cell and meet the needs of the terminal device to receive downlink data in parallel. Indicating the state of the secondary cell corresponding to the group identifier through the secondary cell sleep indication helps to better be compatible with the existing 3GPP protocol, without the need to add additional information elements in the configuration information of the secondary cell, which helps to reduce signaling overhead.

[0008] In one possible implementation, the secondary cell sleep indication includes a first bit and a second bit, the first bit corresponds to the first group identifier, the second bit corresponds to the second group identifier, the value of the first bit is used to indicate that the first secondary cell corresponding to the first group identifier is set to a sleep state, and the value of the second bit is used to indicate that the second secondary cell corresponding to the second group identifier is set to an activated state, wherein the value of the first bit is different from the value of the second bit, exemplarily, the value of the first bit is 1, and the value of the second bit is 0.

[0009] Alternatively, the access network device may determine that each secondary cell corresponds to a sleep group, that is, the configuration information of each secondary cell includes the group identifier of the sleep group to which the secondary cell belongs. When indicating the state of each secondary cell, the access network device may send a secondary cell sleep indication to the terminal device, and each bit in the secondary cell sleep indication corresponds to a group identifier, that is, each bit corresponds to a secondary cell. Accordingly, the terminal device may determine the state of the secondary cell corresponding to each bit according to the value of each bit in the secondary cell sleep indication.

[0010] In the above technical solution, a one-to-one correspondence between the secondary cell and the group identifier is set, so that one bit in the secondary cell sleep indication can indicate the state of a secondary cell, which not only flexibly indicates the state of the secondary cell, but also is compatible with the existing 3GPP protocol to the greatest extent. There is no need to add additional information elements in the configuration information of the secondary cell, which helps to reduce signaling overhead.

[0011] In one possible implementation, a secondary cell in a dormant state does not occupy the downlink processing capability of a terminal device, and the number of secondary cells in an activated state is m, where m is an integer less than or equal to N-1, and N is the maximum number of carriers supported by the terminal device for parallel reception of downlink data, and N is an integer greater than 1.

[0012] In the above technical solution, the access network device can instruct the terminal device to activate m secondary cells, and the secondary cells in the dormant state do not occupy the downlink processing capacity of the terminal device. In this way, the terminal device can support downlink data transmission of carrier aggregation on the m secondary cells, which helps to meet the needs of the terminal device to receive downlink data in parallel at different time periods.

[0013] In a possible implementation, the configuration information of the first secondary cell also includes a sleep capability. When the sleep capability is enabled, the first secondary cell in the sleep state does not occupy the downlink processing capability of the terminal device. When the sleep capability is not enabled, the first secondary cell in the sleep state occupies the downlink processing capability of the terminal device.

[0014] In the above technical solution, the configuration information of the first secondary cell also includes the sleep capability. Whether the sleep capability is enabled determines whether the first secondary cell in sleep state occupies the downlink processing capability of the terminal device, which helps to flexibly indicate the status of the secondary cell.

[0015] In a second aspect, the present application provides a communication method, which can be implemented by the interaction of a first communication device and a second communication device, wherein the first communication device can be a terminal device or a module in the terminal device, and the second communication device can be an access network device or a module in the access network device. For the convenience of description, the following is an example in which the first communication device is a terminal device and the second communication device is an access network device.

[0016] The method includes: an access network device sends list information to a terminal device, and correspondingly, the terminal device receives the list information from the access network device, wherein the list information includes a first secondary cell identification group, and the first secondary cell identification group includes identifications of one or more secondary cells. The access network device sends downlink control information to the terminal device, and correspondingly, the terminal device receives downlink control information from the access network device, wherein the downlink control information includes a secondary cell sleep indication, and the secondary cell sleep indication is used to indicate that one or more secondary cells corresponding to the first secondary cell identification group are set to a sleep state.

[0017] In the above technical solution, the access network device can determine that a secondary cell corresponds to one or more secondary cell identification groups, and a secondary cell identification group corresponds to one or more secondary cells. Furthermore, the access network device sends list information to the terminal device, and each row in the list information is a secondary cell identification group, and the secondary cell identification group includes one or more secondary cell identifications. The access network device can select a secondary cell identification group from the list information, indicate the secondary cell identification group to the terminal device, and the terminal device sets one or more secondary cells corresponding to the secondary cell identification group to a dormant state. In this way, it helps to flexibly indicate the status of the secondary cell, so that the terminal device can flexibly switch the secondary cell for receiving downlink data in parallel, meeting the terminal device's requirements for receiving downlink data in parallel. Indicating the status of the secondary cell by the secondary cell identification group corresponding to the secondary cell dormancy indication helps to better be compatible with the existing 3GPP protocol, and can indicate the status of more secondary cells.

[0018] In a possible implementation, the access network device further sends a configuration message to the terminal device, and correspondingly, the terminal device further receives a configuration message from the access network device. The configuration message includes configuration information of a primary cell and configuration information of M secondary cells, the number of the multiple secondary cells corresponding to the first secondary cell identification group is greater than MN, and N is the maximum number of carriers for sending downlink data to the terminal device in parallel.

[0019] In the above technical solution, the number of multiple secondary cells corresponding to the secondary cell identification group is set to be greater than MN to ensure that the number of secondary cells in the activated state is less than or equal to N-1, which helps to achieve the normal operation of the terminal equipment, and then the terminal equipment can flexibly switch the secondary cells used for parallel reception of downlink data to meet the needs of the terminal equipment for parallel reception of downlink data.

[0020] In a possible implementation, the configuration information of the secondary cell also includes sleep capability. When the sleep capability is enabled, the secondary cell in the sleep state does not occupy the downlink processing capability of the terminal device; when the sleep capability is not enabled, the secondary cell in the sleep state occupies the downlink processing capability of the terminal device.

[0021] In the above technical solution, the configuration information of the secondary cell also includes the sleep capability. Whether the sleep capability is enabled determines whether the secondary cell in the sleep state occupies the downlink processing capability of the terminal device, which helps to flexibly indicate the status of the secondary cell.

[0022] In a third aspect, the present application provides a communication device.

[0023] The communication device is capable of implementing the functions of the terminal device in the first aspect, for example, the communication device includes a module or unit or means corresponding to the terminal device operation in the first aspect. Alternatively, the communication device is capable of implementing the functions of the access network device in the first aspect, for example, the communication device includes a module or unit or means corresponding to the access network device operation in the first aspect. Alternatively, the communication device is capable of implementing the functions of the terminal device in the second aspect, for example, the communication device includes a module or unit or means corresponding to the terminal device operation in the second aspect. Alternatively, the communication device is capable of implementing the functions of the access network device in the second aspect, for example, the communication device includes a module or unit or means corresponding to the access network device operation in the second aspect.

[0024] The modules, units or means may be implemented by software or by hardware, or the corresponding software may be implemented by hardware.

[0025] In a possible implementation, the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to achieve communication between the communication device and other devices; the processing unit can be used to perform some internal operations of the communication device.

[0026] The functions performed by the processing unit and the communication unit may correspond to the operations of the terminal device involved in the first aspect. Alternatively, the functions performed by the processing unit and the communication unit may correspond to the operations of the access network device involved in the first aspect. Alternatively,

[0027] The functions performed by the processing unit and the communication unit may correspond to the operations of the terminal device involved in the second aspect. Alternatively, the functions performed by the processing unit and the communication unit may correspond to the operations of the access network device involved in the second aspect.

[0028] In a possible implementation, the communication device includes a processor, and the processor may be coupled to a memory.

[0029] The memory may store the necessary computer programs or instructions for implementing the functions of the terminal device involved in the first aspect. The processor may execute the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the communication device implements the method corresponding to the terminal device in the first aspect. Alternatively, the memory may store the necessary computer programs or instructions for implementing the functions of the access network device involved in the first aspect. The processor may execute the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the communication device implements the method corresponding to the access network device in the first aspect. Alternatively,

[0030] The memory may store the necessary computer programs or instructions for implementing the functions of the terminal device involved in the second aspect. The processor may execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, the communication device implements the method corresponding to the terminal device in the second aspect. Alternatively, the memory may store the necessary computer programs or instructions for implementing the functions of the access network device involved in the second aspect. The processor may execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, the communication device implements the method corresponding to the access network device in the second aspect.

[0031] In a possible implementation, the communication device includes a processor and a memory, and the memory can store necessary computer programs or instructions. The processor can execute the computer programs or instructions stored in the memory.

[0032] When the computer program or instruction is executed, the communication device implements the method corresponding to the terminal device in the first aspect, or the communication device implements the method corresponding to the access network device in the first aspect, or,

[0033] When the computer program or instruction is executed, the communication device implements the method corresponding to the terminal device in the second aspect above, or the communication device implements the method corresponding to the access network device in the second aspect above.

[0034] In a possible implementation, the communication device includes a processor and an interface circuit, wherein:

[0035] The processor is used to communicate with other devices through the interface circuit and execute the method corresponding to the terminal device in the first aspect above, or execute the method corresponding to the access network device in the first aspect above, or,

[0036] The processor is used to communicate with other devices through the interface circuit and execute the method corresponding to the terminal device in the above-mentioned second aspect, or execute the method corresponding to the access network device in the above-mentioned second aspect.

[0037] It is understandable that in the third aspect above, the processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading the software code stored in the memory. In addition, the above processors can be one or more, and the memories can be one or more. The memory can be integrated with the processor, or the memory can be separately set from the processor. In the specific implementation process, the memory can be integrated with the processor on the same chip, or can be set on different chips respectively. The embodiment of the present application does not limit the type of memory and the setting method of the memory and the processor.

[0038] In a fourth aspect, the present application provides a communication system, which may include a first communication device and a second communication device, wherein the first communication device is used to implement the function of the terminal device in the first aspect, and the second communication device is used to implement the function of the access network device in the first aspect; or, the first communication device is used to implement the function of the terminal device in the second aspect, and the second communication device is used to implement the function of the access network device in the second aspect.

[0039] In a fifth aspect, the present application provides a computer-readable storage medium, in which computer-readable instructions are stored. When a computer reads and executes the computer-readable instructions, the computer executes a method in any possible implementation of the first and second aspects above.

[0040] In a sixth aspect, the present application provides a computer program product. When a computer reads and executes the computer program product, the computer executes the method in any possible implementation of the first and second aspects above.

[0041] In a seventh aspect, the present application provides a chip, comprising a processor, wherein the processor is coupled to a memory and is used to read and execute a software program stored in the memory to implement a method in any possible implementation of the first and second aspects above.

[0042] The technical effects that can be achieved in the above aspects can be referred to each other and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of a communication system applicable to an embodiment of the present application;

[0044] Figure 2 A schematic diagram of a flow chart of a first communication method provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of the information element structure of the configuration information of the serving cell in the first RRC message provided in an embodiment of the present application;

[0046] Figure 4 A schematic diagram of the information element structure of the configuration information of the serving cell in the second RRC message provided in an embodiment of the present application;

[0047] Figure 5 A schematic diagram of the information element structure of the configuration information of the serving cell in the third RRC message provided in an embodiment of the present application;

[0048] Figure 6 A schematic diagram of a first type of indicating the state of a secondary cell provided in an embodiment of the present application;

[0049] Figure 7 A schematic diagram of a flow chart of a second communication method provided in an embodiment of the present application;

[0050] Figure 8 A schematic diagram of the information element structure of the configuration information of the serving cell in the fourth RRC message provided in an embodiment of the present application;

[0051] Fig. 9 A schematic diagram of a second type of indicating the state of a secondary cell provided in an embodiment of the present application;

[0052] Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0053] Fig.11 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0055] Figure 1 It is a schematic diagram of the architecture of the communication system 1000 applied in the embodiment of the present application.

[0056] like Figure 1 As shown, the communication system includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (such as Figure 1 110a and 110b in the figure, collectively referred to as 110), may also include at least one terminal (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 The terminal 120 is connected to the RAN node 110 in a wireless manner. Terminals and terminals and RAN nodes and RAN nodes can be connected to each other by wired or wireless means. The communication system 1000 may also include a core network 200. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or may be the same physical device that integrates the logical functions of the core network device and the logical functions of the RAN node. The communication system 1000 may also include the Internet 300.

[0057] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, and a future radio access system defined in the 3rd generation partnership project (3GPP). RAN100 may also include two or more of the above-mentioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0058] RAN node, also known as network equipment, access network equipment, wireless access network equipment, RAN entity or access node, is used to help terminals access the communication system wirelessly. In one application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in the fifth generation (5G) mobile communication system, a next generation base station in the sixth generation (6G) mobile communication system, or a base station in a future mobile communication system. A RAN node can be a macro base station (such as Figure 1 110a), or a micro base station or an indoor station (such as Figure 1110b), it can also be a relay node or a donor node. In another application scenario, the cooperation of multiple RAN nodes can be used to help the terminal achieve wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU) or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence layer protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the relevant technical specifications of 3GPP. RU can be used to implement the sending and receiving functions of radio frequency signals. CU and DU can be two independent RAN nodes, or they can be integrated in the same RAN node, for example, integrated in the baseband unit (BBU). The RU may be included in a radio frequency device, for example, in a remote radio unit (RRU) or an active antenna unit (AAU). The CU may be further divided into two types of RAN nodes: CU-control plane and CU-user plane. In different systems, the RAN node may have different names. For example, in an O-RAN system, the CU may be called an open CU (open CU, O-CU), the DU may be called an open DU (open DU, O-DU), and the RU may be called an open RU (open RU, O-RU). The RAN node in the embodiment of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with a corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For ease of description, the following description takes a base station as an example of a RAN node.

[0059] A terminal is a device with wireless transceiver function, which can send signals to a base station or receive signals from a base station. A terminal can also be called a terminal device, user equipment (UE), a mobile station, a mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0060] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0061] The roles of the base station and the terminal can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0062] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0063] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0064] In this application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection on the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0065] It can be understood that in the embodiments of the present application, the physical downlink shared channel (physical downlink shared channel, PDSCH) and the physical downlink control channel (physical downlink control channel, PDCCH) are only used as examples of downlink data channels and downlink control channels, respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of the present application do not limit this.

[0066] The following first explains the relevant technical features involved in the embodiments of the present application. It should be noted that these explanations are intended to make the embodiments of the present application easier to understand and should not be regarded as limiting the scope of protection claimed by the present application.

[0067] (1) Frequency band and carrier

[0068] A frequency band refers to a section of frequency or a frequency range. A 5G communication system may include multiple frequency bands, such as n1, n2, n41, n78, etc. n1, n2, n41, n78, etc. can be understood as frequency band numbers, each of which is used to identify a preset frequency range. For example, the frequency range identified by n41 includes 2496MHz-2690MHz. The frequency range described here takes the uplink frequency range as an example. A frequency band may include one or more carriers. Carriers can be divided into uplink carriers and downlink carriers. Uplink carriers are used for uplink communication between terminals and base stations, and downlink carriers are used for downlink communication between terminals and base stations.

[0069] (2) Community

[0070] A cell is a set of resources managed by a base station, including frequency domain resources and spatial domain resources. The frequency domain resources of a cell include uplink frequency domain resources and / or downlink frequency domain resources; the spatial domain resources of a cell can be the spatial domain resources corresponding to a beam or a group of beams, and can also be understood as a cell corresponding to a specific physical coverage area.

[0071] In the embodiment of the present application, different cells may be managed by different base stations. For example, cell #1 and cell #2 may be managed by different base stations. In this case, it can be said that cell #1 and cell #2 do not share a common station. Cell #1 and cell #2 may also be managed by the same base station and have the same baseband processing unit and / or radio frequency processing unit. This application does not specifically limit this.

[0072] Depending on the frequency band range in which the cell is located (or understood to correspond to), the cell in the range of 450MHz-6000MHz can be called a cell in the frequency range (FR) 1 or a low-frequency cell, and the cell in the range of 24250MHz-52600MHz can be called a cell in FR2 or a high-frequency cell. It should be noted that there is a one-to-one correspondence between the cell and the carrier. In the absence of logical conflicts, the cell and the carrier can be used interchangeably. In other words, the frequency band range in which the cell is located can be understood as the frequency band range in which the frequency of the cell's corresponding carrier is located, and can also be called the working frequency band of the cell or the frequency band in which the cell is located.

[0073] (3) Carrier aggregation

[0074] Carrier aggregation is the aggregation of two or more carriers to provide services for one terminal. In order to efficiently utilize fragmented spectrum, carrier aggregation supports aggregation between different carriers. The different carriers here can be carriers of the same bandwidth or different bandwidths, or adjacent or non-adjacent carriers in the same frequency band, or carriers in different frequency bands. Carrier aggregation can be divided into intra-band continuous carrier aggregation, intra-band non-contiguous carrier aggregation, and inter-band non-contiguous carrier aggregation.

[0075] After carrier aggregation is introduced, the cells that provide services to the terminal may include a primary cell (Pcell) and one or more secondary cells (Scell). That is, the primary cell of the terminal and all the secondary cells are the service cells of the terminal. Carrier aggregation supports the terminal to transmit data on the primary cell and the secondary cell at the same time. For example, when the primary cell and the secondary cell both include uplink carriers, the terminal can send uplink data to the base station in parallel on the primary cell and the secondary cell at the same time; for another example, when the primary cell and the secondary cell both include downlink carriers, the terminal can receive downlink data sent by the base station in parallel on the primary cell and the secondary cell at the same time.

[0076] In the present application, when receiving downlink data from a base station, the terminal can perform carrier aggregation on N cells, that is, the terminal can perform carrier aggregation on a primary cell and N-1 secondary cells, or in other words, the maximum number of carriers supported by the terminal for parallel reception of downlink data is N, the maximum number of cells supported by the terminal for parallel reception of downlink data is N, the processing capacity of parallel reception of downlink data supported by the terminal is N, etc., where N is an integer greater than 1. In the present application, the above expressions can be used interchangeably. The maximum number of carriers supported by the terminal for parallel reception of downlink data can be expressed as maxNumberOfCarrierReceivingPDSCH.

[0077] The primary cell may be a cell where the terminal establishes an initial connection, or the primary cell may be a cell where the terminal reestablishes a radio resource control (RRC) connection. The primary cell may be used for RRC communication between a base station and a terminal. The carrier corresponding to the primary cell is called a primary component carrier (PCC).

[0078] The secondary cell can be used to provide additional radio resources, for example, when there is no RRC communication between the secondary cell and the terminal. The secondary cell can be added / modified / released through an RRC reconfiguration message after the initial security activation procedure. The carrier corresponding to the secondary cell is called a secondary component carrier (SCC).

[0079] (4) Status of the secondary cell

[0080] The state of the secondary cell may include an activated state and an inactive state.

[0081] When the secondary cell is in an activated state, the terminal can perform at least one of the following operations in the carrier corresponding to the secondary cell: send semi-persistent scheduling (SPS); report channel state information (CSI); detect the PDCCH transmitted on the secondary cell. When carrier aggregation is configured with cross-carrier scheduling, if the secondary cell is scheduled by another cell, there will be a PDCCH of the scheduled secondary cell on the scheduling cell. This PDCCH is called the PDCCH used to schedule the secondary cell.

[0082] When the secondary cell is in the deactivated state, the terminal does not send a sounding reference signal (SRS) in the carrier corresponding to the secondary cell, does not report CSI, does not transmit uplink data, does not monitor PDCCH, and does not send PUCCH. The uplink data here includes the uplink shared channel (UL-SCH) and the random access channel (RACH).

[0083] The state of the secondary cell can be switched between an activated state and a deactivated state.

[0084] Specifically, after the base station configures the secondary cell for the terminal, the secondary cell is in a deactivated state. The base station can determine whether to activate the secondary cell for the terminal according to actual needs. When the base station determines that the secondary cell of the terminal needs to be activated, it can send an activation command to the terminal, and then the terminal can activate the secondary cell according to the activation command, so that the state of the secondary cell is converted from a deactivated state to an activated state. Furthermore, for the secondary cell in the activated state, the base station can send a deactivation command to the terminal, and then the terminal can deactivate the secondary cell according to the deactivation command. Among them, both the activation command and the deactivation command can be a MAC control element (MAC CE).

[0085] At present, most terminals can only support aggregation of two carriers. Thus, limited by the capabilities of the terminal, the base station can only configure two carriers (i.e., cells) for the terminal and instruct the terminal to receive downlink data in parallel on the two carriers, wherein the two carriers include a carrier of a primary cell and a carrier of a secondary cell. The transmission requirements of the terminal's downlink data will change over time. For example, two smaller carriers (such as 5MHz and 10MHz) are required for transmission in the first time period, while two larger carriers (such as 15MHz and 20MHz) are required for transmission in the second time period. Thus, the current carrier aggregation cannot be applied to the different transmission requirements of the terminal for downlink data in different time periods, that is, the base station cannot flexibly schedule the terminal to receive downlink data through carrier aggregation.

[0086] To this end, the present application provides a communication method for meeting different bandwidth requirements when a terminal receives downlink data in parallel. Specifically, in the communication method, a new state of a secondary cell is defined, namely, a dormant state. When the secondary cell is in the dormant state, the secondary cell does not occupy the downlink processing capability of the terminal. Accordingly, the base station can configure M+1 carriers for the terminal (including a carrier of a main cell and carriers of M secondary cells, and M+1 is greater than the maximum number of carriers N supported by the terminal for receiving downlink data in parallel, and M and N are both integers greater than 1). According to the different bandwidth requirements of the terminal when receiving downlink data in parallel, the base station instructs the terminal to activate different m secondary cells among the M secondary cells, and sets the other Mm secondary cells to a dormant state, where m is less than N-1 and m is an integer.

[0087] The secondary cell in the dormant state does not occupy the downlink processing capability of the terminal, which may be one or more of the following:

[0088] (1) A secondary cell in a dormant state does not occupy the baseband processing capability of the terminal. The baseband processing capability may be the capability of the terminal to receive downlink data on each carrier using an independent baseband processing unit, such as fast Fourier transform (FFT) capability, post-FFT data buffering capability, etc.

[0089] (2) The secondary cell in dormant state does not occupy the RF receiving capability of the terminal;

[0090] (3) The terminal does not load the configuration information of the secondary cell;

[0091] (4) The terminal does not load the configuration information of the activated bandwidth part (BWP) in the configuration information of the secondary cell;

[0092] (5) The secondary cell in the dormant state does not occupy the carrier aggregation capability of the terminal.

[0093] For example, the maximum number of carriers supported by the terminal is 2 (ie, N=2), and the base station can configure 6 cells for the terminal (recorded as cell 0 to cell 5), where cell 0 is the primary cell and cells 1 to cell 5 are secondary cells (ie, M=5). In the first period, the base station instructs the terminal to set cell 0 and cell 1 in an activated state, and to set cells 2 to cell 5 in a dormant state, and the terminal can receive downlink data in parallel on cell 0 and cell 1; in the second period, the base station instructs the terminal to set cell 0 and cell 2 in an activated state, and to set cells 1, cells 3 to cells 5 in a dormant state, and the terminal can receive downlink data in parallel on cell 0 and cell 2.

[0094] It is understandable that the primary cell is always in an activated state. Specifically, the base station instructs the terminal to set m of the M secondary cells to an activated state and to set the other Mm cells to a dormant state to meet the different bandwidth requirements of the terminal when receiving downlink data in parallel. For the convenience of description, the following focuses on the description of the M secondary cells.

[0095] like Figure 2 A flow chart of the first communication method provided as an example for this application:

[0096] Step 201: The base station sends a configuration message to the terminal, and correspondingly, the terminal receives the configuration message from the base station.

[0097] Among them, the configuration message includes configuration information of the first secondary cell and configuration information of the second secondary cell, the configuration information of the first secondary cell includes a first group identifier, and the configuration information of the second secondary cell includes a second group identifier, the first group identifier is the group identifier corresponding to the first secondary cell, and the second group identifier is the group identifier corresponding to the second secondary cell, and the secondary cell and the group identifier are in a one-to-one correspondence.

[0098] It is understandable that the terminal device does not expect the first group of identifiers to be the same as the second group of identifiers.

[0099] In one possible manner, the base station generates configuration information of M secondary cells, and sends the configuration information of the M secondary cells to the terminal through a configuration message. The configuration message is specifically an RRC message, and the configuration information of the secondary cell can specifically be the configuration information of the serving cell (serving cell configuration). Further, the base station divides the M secondary cells into M dormancy groups (dormancy groups), that is, each secondary cell is divided into a separate dormancy group. Each secondary cell corresponds to a group ID (group ID) of a dormancy group, and any two secondary cells have different group IDs. The M secondary cells include a first secondary cell and a second secondary cell.

[0100] In one possible manner, the configuration information of the secondary cell includes at least one or more of the following information: group identifier, dormant BWP identifier, activated BWP identifier, parameters of PDCCH of activated BWP, and parameters of PDSCH of activated BWP. It can be understood that when the terminal switches the cell to the dormant BWP, the terminal does not need to monitor PDCCH. The frequency domain range of the dormant BWP and the activated BWP is within the frequency domain range of the carrier corresponding to the cell. Furthermore, when the terminal switches the cell to the dormant BWP, the cell is in a dormant state, and when the terminal switches the cell to the activated BWP, the cell is in an activated state. In other words, the terminal can switch the BWP where the cell is located to switch the cell from a dormant state to an activated state, or from an activated state to a dormant state.

[0101] It should be added that the secondary cell can also be in another dormant state. When the secondary cell is in the other dormant state, the secondary cell occupies the downlink processing capability of the terminal. The other dormant state is defined in the existing 3GPP protocol. Furthermore, in order to distinguish the two dormant states, this application refers to the dormant state that does not occupy the downlink processing capability of the terminal as a special dormant state (special dormant), and the dormant state that occupies the downlink processing capability of the terminal as a non-special dormant state (nonspecial dormant). Exemplarily, the difference between the special dormant state and the non-special dormant state is that when the secondary cell is in the special dormant state, the terminal does not load the configuration information of the secondary cell; when the secondary cell is in the non-special dormant state, the terminal loads the configuration information of the secondary cell. Except for special instructions, the dormant state in this application refers to the special dormant state.

[0102] like Figure 3 The first information element structure diagram provided for example in this application is specifically the configuration information of the serving cell in the RRC message. The difference between this information element and the existing 3GPP protocol can be found in Figure 3 Bold part.

[0103] Specifically, the configuration information of the serving cell includes dormant BWP configuration information (dormant BWP configuration). In order to distinguish it from the configuration information of the dormant BWP defined in the existing 3GPP protocol, the present application may record the configuration information of the dormant BWP corresponding to the special dormant state as dormantBWP-Config-r19, and record the configuration information of the dormant BWP corresponding to the non-special dormant state defined in the existing 3GPP protocol as dormantBWP-Config-r16. Furthermore, dormantBWP-Config-r19 includes dormantBWP-Id-r19, withinActiveTimeConfig-r19, and outsideActiveTimeConfig, wherein dormantBWP-Id-r19 is the dormant BWP identifier, withinActiveTimeConfig-r19 is the configuration information of the terminal during the wake-up time, and outsideActiveTimeConfig is the configuration information of the terminal outside the wake-up time. For withinActiveTimeConfig-r19 and outsideActiveTimeConfig, refer to the definition of the existing 3GPP protocol. Furthermore, withinActiveTimeConfig-r19 further includes BWP-Id and DormancygroupID-r19, wherein BWP-Id here is the activation BWP identifier, and DormancygroupID-r19 is equivalent to the group identifier in this application.

[0104] When the base station sends the configuration information of the serving cell to the terminal, it may choose to carry dormantBWP-Config-r19 or dormantBWP-Config-r16 in the configuration information of the serving cell according to the capability information of the terminal (see the description in the following embodiment). Further, when the configuration information of the serving cell carries dormantBWP-Config-r19, the terminal may set the state of the serving cell to a special dormant state based on the instruction of the base station. When the configuration information of the serving cell carries dormantBWP-Config-r16, the terminal may set the state of the serving cell to a non-special dormant state based on the instruction of the base station.

[0105] Optionally, the configuration information of the secondary cell also includes a sleep capability, which is set to an enable state. The sleep capability in the enable state can be used to indicate that when the terminal sets the secondary cell in a sleep BWP, the secondary cell does not occupy the downlink processing capability of the terminal. It can be understood that when the sleep capability is set to a disable state and the secondary cell is in a sleep BWP, the secondary cell occupies the downlink processing capability of the terminal. Whether the sleep capability is enabled can be determined by the base station. The sleep capability can be specifically expressed as NoDownlinkCapability (no downlink capability).

[0106] like Figure 4 The second information element structure diagram provided for example in this application is specifically the configuration information of the serving cell in the RRC message. The difference between this information element and the existing 3GPP protocol can be found in Figure 4 Bold part.

[0107] Specifically, the configuration information of the serving cell includes dormantBWP-Config-r16. The present application further adds NoDownlinkCapability in dormantBWP-Config-r16. The base station can indicate whether the secondary cell occupies the downlink processing capability of the terminal when it is in a dormant state by setting NoDownlinkCapability to an enable state or a disable state.

[0108] like Figure 5 The third information element structure diagram provided for example in this application is specifically the configuration information of the serving cell in the RRC message. The difference between this information element and the existing 3GPP protocol can be found in Figure 5 Bold part.

[0109] Specifically, the configuration information of the service cell includes dormantBWP-Config-r19. Compared with dormantBWP-Config-r16, dormantBWP-Config-r19 adds NoDownlinkCapability. The base station can indicate whether the secondary cell occupies the downlink processing capability of the terminal when it is in sleep state by setting NoDownlinkCapability to enable or disable state.

[0110] The description of dormantBWP-Config-r16 and dormantBWP-Config-r19 can be found in Figure 3 Described in the relevant embodiments.

[0111] Optionally, before step 201, the method further includes:

[0112] Step 200: The terminal sends the capability information of the terminal to the base station, and correspondingly, the base station receives the capability information from the terminal.

[0113] The capability information of the terminal includes the function set of M secondary carriers, and the function set of the secondary carriers includes parameters such as subcarrier spacing and bandwidth. Each secondary carrier does not occupy the downlink processing capability of the terminal when it is in a dormant state. The base station generates configuration information of M secondary cells corresponding to the M secondary carriers according to the function set of the M secondary carriers.

[0114] Optionally, before receiving the capability information from the terminal, the base station may first request the capability information of the terminal from the terminal. In one possible manner, after determining that the terminal has established an RRC connection with the primary cell, the base station sends a capability request to the terminal on the primary cell, and accordingly, the terminal receives the capability request from the base station on the primary cell, and the capability request is used to request capability information from the terminal. In response to the capability request, the terminal sends the capability information to the base station. The capability request may specifically be a UE capability request (UE capability enquiry), and the capability information may specifically be UE capability information (UE capability information).

[0115] After the base station sends the configuration message to the terminal, it may further send an activation command to the terminal to activate the M secondary cells. Here, since the maximum number of carriers supported by the terminal for receiving downlink data in parallel is N, after activating the M secondary cells, the base station will immediately determine the m secondary cells that need to be used for transmitting downlink data from the M secondary cells (i.e., the m secondary cells that continue to be activated). Subsequently, the base station sets the other (Mm) secondary cells other than the m secondary cells to a dormant state.

[0116] Among them, when the base station selects m secondary cells that need to be in an activated state from M secondary cells, and / or selects (Mm) secondary cells that need to be in a dormant state, the selection can be based on one or more of the following information: the downlink transmission requirements of the terminal, the channel quality of the secondary cell, and the maximum number N of carriers supported by the terminal for parallel reception of downlink data.

[0117] It is understandable that the downlink transmission requirements of the terminal, the channel quality of the secondary cell and other information may change, and the base station can re-determine the m secondary cells needed for the terminal to transmit downlink data from the M secondary cells. Subsequently, the base station instructs the terminal to set the m secondary cells to an activated state, and to set the other (Mm) secondary cells other than the m secondary cells to a dormant state. Similarly, the base station can continue to determine new m secondary cells that are needed for the terminal to transmit downlink data, and instruct the terminal to set the m secondary cells to an activated state, and to set the other (Mm) secondary cells other than the m secondary cells to a dormant state. The number m of secondary cells in the activated state determined by the base station each time may be the same or different from the number m of secondary cells in the activated state determined last time, but the number m of secondary cells in the activated state determined each time is less than N-1.

[0118] The manner in which the base station instructs the terminal to switch the state of the secondary cell is described in detail as follows.

[0119] Step 202: Under the condition that the first secondary cell is in an activated state and the second secondary cell is in a dormant state, the base station sends downlink control information (DCI) to the terminal. Correspondingly, the terminal receives the DCI from the base station.

[0120] The DCI includes a SCell dormancy indication, and the SCell dormancy indication is used to instruct the terminal to set a first SCell corresponding to the first group identifier to a dormant state, and to set a second SCell corresponding to the second group identifier to an activated state.

[0121] Alternatively, it is understood that the secondary cell sleep indication is used to instruct the terminal to set the m secondary cells corresponding to the m group identifiers among the M group identifiers to an activated state, and to set the Mm secondary cells corresponding to the other Mm group identifiers except the m group identifiers among the M group identifiers to a sleep state. Exemplarily, the Mm group identifiers include a first group identifier, and the m group identifiers include a second group identifier.

[0122] The format of DCI can be DCI 1-1, DCI 1-2, DCI 1-3 and other formats.

[0123] In one possible manner, the secondary cell sleep indication includes a first bit and a second bit, the first bit corresponds to the first group identifier, and the second bit corresponds to the second group identifier. The value of the first bit is used to indicate that the first secondary cell corresponding to the first group identifier is set to sleep state.

[0124] The value of the second bit is used to indicate that the second secondary cell corresponding to the second group identifier is set to an activated state.

[0125] In one possible manner, the secondary cell sleep indication indicates whether the secondary cell corresponding to each group identifier in the M group identifiers is in an activated state or a dormant state by means of a bitmap. Specifically, the secondary cell sleep indication includes M bits, and the M bits correspond to the M group identifiers respectively. Further, each bit of the secondary cell sleep indication from the most significant bit (MSB) to the least significant bit (LSB) corresponds to the M group identifiers sorted in ascending order. In another exemplary manner, each bit of the secondary cell sleep indication from the MSB to the LSB corresponds to the M group identifiers sorted in descending order. The M bits include a first bit and a second bit, the group identifier corresponding to the first bit is the first group identifier, and the group identifier corresponding to the second bit is the second group identifier.

[0126] Based on the description in step 201, it can be known that the M group identifiers further correspond to the M secondary cells, that is, the bit in the secondary cell sleep indication, the group identifier of the secondary cell, and the secondary cell are in a one-to-one correspondence. For the convenience of description, the bit corresponds to the group identifier, the group identifier corresponds to the secondary cell, and it can also be considered that the bit corresponds to the secondary cell, and the value of the bit can be used to indicate whether the state of the corresponding secondary cell is an activated state or a dormant state. Exemplarily, when the value of the bit is a first preset value, the secondary cell corresponding to the bit is in an activated state, or switches from a dormant state to an activated state, or continues to remain in an activated state; when the value of the bit is a second preset value, the secondary cell corresponding to the bit is in a dormant state, or switches from an activated state to a dormant state, or continues to remain in a dormant state. The first preset value and the second preset value are different, for example, the first preset value is 1, and the second preset value is 0. Further, the value of the first bit is the first preset value, and the value of the second bit is the second preset value.

[0127] Optionally, before the base station sends the DCI to the terminal, the base station also receives the maximum number of carriers N from the terminal. The maximum number of carriers N may be included in the capability information of step 200, or reported as a separate piece of capability information. Further, the base station may determine the secondary cells in the activated state from the M secondary cells according to the maximum number of carriers N. The number m of secondary cells in the activated state determined by the base station is less than or equal to N-1, that is, the number m of bits whose value is the first preset value in the secondary cell sleep indication is less than or equal to N-1.

[0128] For example, the maximum number of carriers supported by the terminal is 3 (i.e., N=3), and the base station can configure 6 cells for the terminal (recorded as cell 0 to cell 5), where cell 0 is the primary cell and cells 1 to cell 5 are secondary cells (i.e., M=5). Furthermore, the configuration information of cell 1 includes a group identifier group1, the configuration information of cell 2 includes a group identifier group2, the configuration information of cell 3 includes a group identifier group3, the configuration information of cell 4 includes a group identifier group4, and the configuration information of cell 5 includes a group identifier group5. When the base station determines that it needs to instruct the terminal to set cells 1 and 2 to an activated state, and to set cells 3 to 5 to a dormant state, the base station may send a DCI to the terminal, in which the secondary cell dormant indication in the DCI is 11000, wherein the 5 bits in the secondary cell dormant indication correspond to group1 to group5, respectively. For details, see Figure 6 As shown, a bit with a value of 1 in the secondary cell sleep indication is used to indicate that the corresponding secondary cell is in an activated state, and a bit with a value of 0 in the secondary cell sleep indication is used to indicate that the corresponding secondary cell is in a sleep state.

[0129] The existing fields included in the DCI defined in the 3GPP protocol are Figure 6 Indicated by ellipsis.

[0130] Taking into account the existing 3GPP protocol stipulates that "the secondary cell sleep indication in the DCI occupies 5 bits", in order to better be compatible with the existing 3GPP protocol, when the base station configures the secondary cell to the terminal, it can determine that the number of secondary cells M is less than or equal to 5, so that when the base station indicates the status of M secondary cells through the secondary cell sleep indication in the DCI, it can use a bitmap method to indicate.

[0131] Optionally, the method further includes: Step 203, the terminal sets the first secondary cell corresponding to the first group identifier to a dormant state according to the secondary cell dormancy indication in the DCI, and sets the second secondary cell corresponding to the second group identifier to an activated state.

[0132] In a specific implementation, the terminal obtains the secondary cell sleep indication from the DCI, and determines the states of the M secondary cells corresponding to the M bits according to the values ​​of the M bits included in the secondary cell sleep indication. The terminal further performs the following judgment for each bit (or the secondary cell corresponding to each bit): if the state of the secondary cell indicated by the bit value is determined to be the same as the current state of the secondary cell, the state of the secondary cell is kept unchanged; if the state of the secondary cell indicated by the bit value is determined to be a sleep state, and the current state of the secondary cell is an activated state, the secondary cell is switched from the activated state to the sleep state; if the state of the secondary cell indicated by the bit value is determined to be an activated state, and the current state of the secondary cell is a sleep state, the secondary cell is switched from the sleep state to the activated state.

[0133] In the above technical solution, the base station can determine that each secondary cell corresponds to a sleep group, that is, the configuration information of each secondary cell includes the group identifier of the sleep group to which the secondary cell belongs. Accordingly, when indicating the state of each secondary cell in the M secondary cells, the base station can send a secondary cell sleep indication to the terminal, and the M bits in the secondary cell sleep indication correspond to the group identifiers of the M sleep groups respectively, that is, to the M secondary cells. In this way, it is helpful to flexibly indicate the state of each secondary cell in the M secondary cells, so that the terminal can flexibly switch the secondary cell for receiving downlink data in parallel, which helps to meet the needs of the terminal to receive downlink data in parallel. Further, by setting a one-to-one correspondence between the secondary cell and the sleep group, the M bits in the secondary cell sleep indication indicate the state of the M secondary cells, which is compatible with the existing 3GPP protocol to the greatest extent, and there is no need to add additional information elements in the configuration information of the secondary cell, which helps to reduce the signaling overhead of the configuration information of the secondary cell, that is, it helps to reduce the signaling overhead of the RRC message.

[0134] It should be added that, in the above step 201, the group identifier can also be replaced by the identifier of the secondary cell (such as the index of the secondary cell). Accordingly, the M bits included in the secondary cell sleep indication in the DCI can correspond to the identifiers of the M secondary cells respectively. Exemplarily, each bit from the MSB to the LSB of the secondary cell sleep indication corresponds to the identifiers of the M secondary cells sorted in ascending order. Again exemplarily, each bit from the MSB to the LSB of the secondary cell sleep indication corresponds to the identifiers of the M secondary cells sorted in descending order.

[0135] like Figure 7 A flow chart of a second communication method provided exemplarily for this application:

[0136] Step 701: The base station sends list information to the terminal, and correspondingly, the terminal receives the list information from the base station. The list information includes a first secondary cell identifier group, and the first secondary cell identifier group includes identifiers of one or more secondary cells.

[0137] Specifically, the list information includes multiple secondary cell identity groups, each of which includes one or more secondary cell identity groups. The multiple secondary cell identity groups include the first secondary cell identity.

[0138] In a possible manner, the base station generates configuration information of M secondary cells, and sends the configuration information of the M secondary cells to the terminal via a configuration message, wherein the configuration message is specifically an RRC message, and the cell configuration information may specifically be configuration information of a serving cell.

[0139] The base station also groups the M secondary cells to obtain multiple dormancy groups, wherein each dormancy group may include one or more secondary cells, and each secondary cell may be assigned to one or more dormancy groups. Subsequently, the base station generates list information and sends the list information to the terminal, the list information including secondary cell identification groups corresponding to the multiple dormancy groups, and the secondary cell identification group corresponding to each dormancy group includes the identification of one or more secondary cells in the dormancy group (such as the index of the secondary cell). Optionally, each secondary cell identification group also includes the group identification of the secondary cell identification group. Exemplarily, the list information may be a dormancy group list.

[0140] The list information may be included in the RRC message. For example, the list information is included in the configuration information of the primary cell in the RRC message, or the list information is included in the physical cell group configuration information (physical cell group configuration) in the RRC message.

[0141] like Figure 8 The fourth information element structure diagram provided for example in this application is specifically the configuration information of the serving cell (primary cell) in the RRC message. The difference from the existing 3GPP protocol can be seen in Figure 8 Bold part.

[0142] For details, see dormantBWP-Config-r19. Figure 3 or Figure 5 Description in the relevant embodiments. DormancyGroupList-r19 is equivalent to the list information in this application, the list information includes multiple DormancyGroup-r19, each DormancyGroup-r19 includes multiple ServCellIndex, wherein DormancyGroup-r19 is equivalent to the secondary cell identification group in this application, and ServCellIndex is equivalent to the identification of the secondary cell in this application.

[0143] Step 702: The base station sends DCI to the terminal. Correspondingly, the terminal receives the DCI from the base station.

[0144] The DCI includes a secondary cell sleep indication, which is used to indicate that one or more secondary cells corresponding to the first secondary cell identity group are set to sleep. Exemplarily, when each secondary cell identity group also includes a group identity of the secondary cell identity group, the secondary cell sleep indication may be the group identity of the first secondary cell identity group.

[0145] Exemplarily, the length of the secondary cell sleep indication is equal to log2 K, where K is the number of secondary cell identification groups included in the list information, and K is an integer greater than 1. Further, considering that the existing 3GPP protocol stipulates that "the secondary cell sleep indication in the DCI occupies 5 bits", in order to better be compatible with the existing 3GPP protocol, the number K of secondary cell identification groups included in the list information may be less than or equal to 32.

[0146] For example, the maximum number of carriers supported by the terminal is 3. The base station configures 6 cells for the terminal (recorded as cell 0 to cell 5), cell 0 is the primary cell, and cells 1 to cell 5 are secondary cells (i.e., M=5). The base station divides cell 1, cell 3, and cell 4 into sleep group 1, divides cell 2, cell 4, and cell 5 into sleep group 2, divides cell 1, cell 2, and cell 4 into sleep group 3, and divides cell 2, cell 3, and cell 5 into sleep group 4. The identifiers of cells 1 to 5 are recorded as cell1 to cell5, respectively. The list information is shown in Table 1, and the list information includes cell identification group 1 to cell identification group 4 corresponding to sleep group 1 to sleep group 4, respectively. Cell identification group 1 includes cell1, cell3, cell4, and cell identification group 2 includes cell2, cell4, cell5, etc. When the base station determines that cell 1 and cell 3 need to be scheduled to be in an activated state, and cell 2, cell 4, and cell 5 are in a dormant state, the base station sends a DCI to the terminal. The secondary cell dormant indication in the DCI is 00010. The secondary cell dormant indication can be used to indicate cell identity group 2. For details, see Fig. 9 shown.

[0147] The existing fields included in the DCI defined in the 3GPP protocol are Fig. 9 Indicated by ellipsis.

[0148] Table 1

[0149] Cell ID Group cell1, cell3, cell4 cell2, cell4, cell5 cell1, cell2, cell4 cell2, cell3, cell5

[0150] It should be added that when the base station sends DCI to the terminal, it needs to ensure that the number m of activated secondary cells is less than or equal to N-1, that is, when the base station groups M secondary cells, it needs to ensure that the number of secondary cells in each group is greater than MN. Combined with the relevant example in Table 1 above, the maximum number of carriers supported by the terminal is 3, and the total number of secondary cells configured by the base station for the terminal is 5, then the base station needs to ensure that the number of secondary cells in each group is greater than 2.

[0151] Optionally, the method further includes: Step 703, the terminal sets one or more secondary cells corresponding to the first secondary cell identity group to a dormant state according to the secondary cell dormancy indication in the DCI.

[0152] In a specific implementation, the terminal obtains the secondary cell sleep indication from the DCI, determines the first secondary cell identification group according to the secondary cell sleep indication, and then sets one or more secondary cells to the sleep state according to the identification of one or more secondary cells included in the first secondary cell identification group. In combination with the example in Table 1, the terminal determines that the secondary cell sleep indication is used to indicate cell identification group 2 (the first secondary cell identification group is cell identification group 2) according to the secondary cell sleep indication 00010, and determines that cell identification group 2 includes cell2, cell4, and cell5 according to the list information, so cell 1 and cell 3 are set to the activated state, and cell 2, cell 4, and cell 5 are set to the sleep state.

[0153] It can be understood that the terminal sets multiple secondary cells corresponding to the secondary cell identification group indicated by the secondary cell sleep indication to a sleep state, and sets other secondary cells except these secondary cells to an activated state. The present application can also be that the terminal sets multiple secondary cells corresponding to the secondary cell identification group indicated by the secondary cell sleep indication to an activated state, and sets other secondary cells except these secondary cells to a sleep state. Accordingly, when the base station groups the M secondary cells, it needs to ensure that the number of secondary cells in each group is less than N-1.

[0154] It is understandable that the second communication method (i.e. Figure 7 For details not described in detail in the related embodiments, please refer to the first communication method (i.e. Figure 2 Description in the related embodiments). The secondary cell identification group, the sleep group, and the group identification of the sleep group are in a one-to-one correspondence. The main difference between the second communication method and the first communication method is that in the second communication method, a secondary cell may correspond to one or more secondary cell identification groups, and a secondary cell identification group may correspond to one or more secondary cells, and accordingly, the base station indicates the status of M secondary cells by indicating the secondary cell identification group; while in the first communication method, the secondary cell and the group identification are in a one-to-one correspondence, and accordingly, the base station indicates the status of M secondary cells by means of a bitmap.

[0155] In the above technical solution, the base station can determine that a secondary cell corresponds to one or more secondary cell identification groups, and a secondary cell identification group corresponds to one or more secondary cells. Further, the base station sends list information to the terminal, each row in the list information is a secondary cell identification group, and the secondary cell identification group includes the identification of one or more secondary cells. Correspondingly, the base station can select a secondary cell identification group from the list information, and then indicate the secondary cell identification group to the terminal, and the terminal determines one or more secondary cells corresponding to the secondary cell identification group according to the secondary cell identification group, and sets the one or more secondary cells corresponding to the secondary cell identification group to a dormant state. In this way, it is helpful to flexibly indicate the state of each secondary cell in the M secondary cells, so that the terminal can flexibly switch the secondary cell for receiving downlink data in parallel, which helps to meet the terminal's demand for receiving downlink data in parallel. Further, the base station sends the list information to the terminal, and indicates one of the secondary cell identification groups in the list information to the terminal, which is compatible with the existing 3GPP protocol to the greatest extent and can indicate the state of more secondary cells.

[0156] It should be added that in the above Figures 2 to 9 In a related embodiment, when m is less than N-1, the terminal may select (N-1)-m secondary cells from the Mm secondary cells in a dormant state to occupy the downlink data capability of the terminal according to the ascending or descending order of the index of the secondary cell. The terminal sets a certain secondary cell in a dormant state to occupy the downlink data capability of the terminal, and specifically, the terminal pre-loads the configuration information of the secondary cell. In this way, when the base station instructs the terminal to activate the secondary cell, the terminal can quickly switch the secondary cell to the activation BWP corresponding to the secondary cell without first loading the configuration information of the secondary cell.

[0157] For example, the base station configures 6 cells for the terminal (recorded as cell 0 to cell 6), cell 0 is the primary cell, and cells 1 to cell 5 are secondary cells. The maximum number of carriers N supported by the terminal is equal to 3. The base station instructs the terminal to activate cell 2, that is, to schedule the terminal to receive downlink data in parallel in cell 0 and cell 2. Further, after the terminal determines that m is less than N-1, it loads the configuration information of cell 1. When the base station instructs the terminal to further activate cell 1, the terminal can quickly switch cell 1 to the activated BWP corresponding to cell 1.

[0158] In this way, the terminal can switch to the secondary cell used for receiving downlink data in parallel more quickly, and reduce the number of times the terminal clears or loads the configuration information of the secondary cell, which helps to reduce the delay and complexity of terminal processing.

[0159] It should be added that when the secondary cell is in the dormant state, the terminal no longer performs one or more of the following operations on the carrier corresponding to the secondary cell: monitoring PDCCH, receiving downlink data, reporting CSI information, sending SRS, sending RACH, and sending PUCCH. It can be understood that the secondary cell is in the dormant state, which is similar to the secondary cell being in the deactivated state. However, the base station needs to instruct the terminal to deactivate the secondary cell through MAC CE, that is, the base station instructs the terminal to switch the state of the secondary cell to the dormant state. Compared with the base station instructing the terminal to switch the state of the secondary cell to the deactivated state, faster scheduling can be achieved, so that the terminal can switch more quickly to multiple cells for receiving downlink data in parallel.

[0160] It is also necessary to add that Figure 2 Related embodiments and Figure 7 The step numbering of each flowchart described in the relevant embodiments is only an example of the execution process and does not constitute a restriction on the order of execution of the steps. There is no strict execution order between the steps that have no timing dependency relationship with each other in the embodiments of the present application. Not all the steps shown in each flowchart are steps that must be executed. Some steps can be deleted based on each flowchart according to actual needs, or other possible steps can be added based on each flowchart according to actual needs. In the two embodiments, each embodiment focuses on describing the differences from other embodiments. Except for the differences, the two can refer to each other; in addition, in the same embodiment, different implementations or different examples can also refer to each other.

[0161] It is understandable that, in order to implement the functions in the above embodiments, the base station and the terminal include hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0162] Fig.10 and Fig.11 The following is a schematic diagram of the structure of possible communication devices provided by the embodiments of the present application. These communication devices can be used to implement the functions of the terminal or base station in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments.

[0163] In an embodiment of the present application, the communication device may be Figure 1 The terminal 120 shown may also be Figure 1 The base station 110 shown may also be a module (such as a chip) applied to a terminal or a base station.

[0164] like Fig.10 As shown, the communication device 1000 includes a processing unit 1010 and a transceiver unit 1020. The communication device 1000 is used to implement the above Figure 2 Functions of a terminal or a base station in a related method embodiment.

[0165] When the communication device 1000 is used to implement Figure 2 The functions of the terminal in the relevant method embodiments are:

[0166] The transceiver unit 1020 is used to receive a configuration message from an access network device, the configuration message includes configuration information of a first secondary cell and configuration information of a second secondary cell, the configuration information of the first secondary cell includes a first group identifier corresponding to the first secondary cell, the configuration information of the second secondary cell includes a second group identifier corresponding to the second secondary cell, and the first group identifier and the second group identifier are different. Under the condition that the first secondary cell is in an activated state and the second secondary cell is in a dormant state, the transceiver unit 1020 is also used to receive downlink control information from the access network device, the downlink control information includes a secondary cell dormancy indication. The processing unit 1010 is used to set the first secondary cell corresponding to the first group identifier to a dormant state, and set the second secondary cell corresponding to the second group identifier to an activated state according to the secondary cell dormancy indication.

[0167] When the communication device 1000 is used to implement Figure 7 The functions of the terminal in the relevant method embodiments are:

[0168] The transceiver unit 1020 is used to receive list information from the access network device, the list information includes a first secondary cell identification group, the first secondary cell identification group includes identifications of one or more secondary cells; and receive downlink control information from the access network device, the downlink control information includes a secondary cell sleep indication. The processing unit 1010 is used to set one or more secondary cells corresponding to the first secondary cell identification group to a sleep state according to the secondary cell sleep indication.

[0169] In one possible implementation, the transceiver unit 1020 is also used to receive a configuration message from an access network device, the configuration message including configuration information of M secondary cells, the number of multiple secondary cells corresponding to the first secondary cell identification group is greater than MN, and N is the maximum number of carriers supported by the terminal device for parallel reception of downlink data; wherein N is an integer greater than 1, and M is an integer greater than N-1.

[0170] For more detailed description of the processing unit 1010 and the transceiver unit 1020, please refer to Figure 2 or Figure 7 Terminal related description in related method embodiments.

[0171] When the communication device 1000 is used to implement Figure 2The functions of the base station in the related method embodiments are:

[0172] The processing unit 1010 is used to generate a configuration message, the configuration message includes configuration information of a first secondary cell and configuration information of a second secondary cell, the configuration information of the first secondary cell includes a first group identifier corresponding to the first secondary cell, the configuration information of the second secondary cell includes a second group identifier corresponding to the second secondary cell, and the first group identifier and the second group identifier are different. The transceiver unit 1020 is used to send a configuration message to a terminal device. And, under the condition that the first secondary cell is in an activated state and the second secondary cell is in a dormant state, downlink control information is sent to the terminal device, the downlink control information includes a secondary cell dormancy indication, and the secondary cell dormancy indication is used to indicate that the first secondary cell corresponding to the first group identifier is set to a dormant state, and the second secondary cell corresponding to the second group identifier is set to an activated state.

[0173] When the communication device 1000 is used to implement Figure 7 The functions of the base station in the related method embodiments are:

[0174] The processing unit 1010 is used to generate list information, the list information includes a first secondary cell identification group, and the first secondary cell identification group includes identifications of one or more secondary cells. The transceiver unit 1020 is used to send the list information to the terminal device, and send downlink control information to the terminal device, the downlink control information includes a secondary cell sleep indication, and the secondary cell sleep indication is used to indicate that one or more secondary cells corresponding to the first secondary cell identification group are set to a sleep state.

[0175] In a possible implementation, the transceiver unit 1020 is also used to send a configuration message to the terminal device, the configuration message including configuration information of M secondary cells, the number of multiple secondary cells corresponding to the first secondary cell identification group is greater than MN, and N is the maximum number of carriers for sending downlink data in parallel to the terminal device; wherein N is an integer greater than 1, and M is an integer greater than N-1.

[0176] For more detailed description of the processing unit 1010 and the transceiver unit 1020, please refer to Figure 2 or Figure 7 Related description of the base station in the related method embodiment.

[0177] like Fig.11 As shown, the communication device 1100 includes a processor 1111 and an interface circuit 1120. The processor 1111 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 can be a transceiver or an input-output interface. Optionally, the communication device 1100 may also include a memory 1130 for storing instructions executed by the processor 1111 or storing input data required by the processor 1111 to execute instructions or storing data generated after the processor 1111 executes instructions.

[0178] When the communication device 1100 is used to implement Fig.11 When the method is shown, the processor 1111 is used to implement the functions of the above-mentioned processing unit 1011, and the interface circuit 1120 is used to implement the functions of the above-mentioned transceiver unit 1020.

[0179] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above-mentioned method embodiment. The terminal chip receives information from the base station, which can be understood as the information is first received by other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information is first sent to other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the base station by these modules.

[0180] When the above-mentioned communication device is a chip applied to a base station, the base station chip implements the function of the base station in the above-mentioned method embodiment. The base station chip receives information from the terminal, which can be understood as the information is first received by other modules in the base station (such as a radio frequency module or an antenna), and then sent to the base station chip by these modules. The base station chip sends information to the terminal, which can be understood as the information is sent to other modules in the base station (such as a radio frequency module or an antenna), and then sent to the terminal by these modules.

[0181] In the present application, when entity A sends information to entity B, it can be that A sends it directly to B, or that A sends it to B indirectly through other entities. Similarly, when entity B receives information from entity A, it can be that entity B directly receives the information sent by entity A, or that entity B indirectly receives the information sent by entity A through other entities. Entities A and B here can be RAN nodes or terminals, or modules inside the RAN nodes or terminals. The sending and receiving of information can be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station.

[0182] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0183] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also be present in a base station or a terminal as discrete components.

[0184] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When a computer program or instruction is loaded and executed on a computer, the process or function of the embodiment of the present application is executed in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instruction can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless 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, data center, etc. that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, a hard disk, or a tape; it can also be an optical medium, such as a digital video disc; it can also be a semiconductor medium, such as a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0185] In the various embodiments of the present application, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships. In the present application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0186] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: include: receiving a configuration message from an access network device, where the configuration message includes configuration information of a first secondary cell and configuration information of a second secondary cell, where the configuration information of the first secondary cell includes a first group identifier corresponding to the first secondary cell, and the configuration information of the second secondary cell includes a second group identifier corresponding to the second secondary cell, where the first group identifier and the second group identifier are different; Under the condition that the first secondary cell is in an activated state and the second secondary cell is in a dormant state, downlink control information is received from the access network device, the downlink control information includes a secondary cell dormant indication, and the secondary cell dormant indication is used to indicate that the first secondary cell corresponding to the first group identifier is set to the dormant state, and the second secondary cell corresponding to the second group identifier is set to the activated state.

2. The method according to claim 1, characterized in that The secondary cell sleep indication includes a first bit and a second bit, the first bit corresponds to the first group identifier, and the second bit corresponds to the second group identifier; The value of the first bit is used to indicate that the first secondary cell corresponding to the first group identifier is set to the dormant state; The value of the second bit is used to indicate that the second secondary cell corresponding to the second group identifier is set to the activated state; The value of the first bit is different from the value of the second bit.

3. The method according to claim 1 or 2, characterized in that The secondary cell in the dormant state does not occupy the downlink processing capability of the terminal device, and the number of secondary cells in the activated state is m, where m is an integer less than or equal to N-1, and N is the maximum number of carriers supported by the terminal device for parallel reception of downlink data, and N is an integer greater than 1.

4. The method according to any one of claims 1 to 3, characterized in that The configuration information of the first secondary cell also includes a sleep capability. When the sleep capability is enabled, the first secondary cell in the sleep state does not occupy the downlink processing capability of the terminal device.

5. A communication method, characterized in that: include: Sending a configuration message to a terminal device, where the configuration message includes configuration information of a first secondary cell and configuration information of a second secondary cell, where the configuration information of the first secondary cell includes a first group identifier corresponding to the first secondary cell, and the configuration information of the second secondary cell includes a second group identifier corresponding to the second secondary cell, where the first group identifier and the second group identifier are different; Under the condition that the first secondary cell is in an activated state and the second secondary cell is in a dormant state, downlink control information is sent to the terminal device, the downlink control information includes a secondary cell dormant indication, and the secondary cell dormant indication is used to indicate that the first secondary cell corresponding to the first group identifier is set to the dormant state, and the second secondary cell corresponding to the second group identifier is set to the activated state.

6. The method according to claim 5, characterized in that The secondary cell sleep indication includes a first bit and a second bit, the first bit corresponds to the first group identifier, and the second bit corresponds to the second group identifier; The value of the first bit is used to indicate that the first secondary cell corresponding to the first group identifier is in the dormant state; The value of the second bit is used to indicate that the second secondary cell corresponding to the second group identifier is in the activated state; The value of the first bit is different from the value of the second bit.

7. A communication method, characterized in that: include: Receiving list information from an access network device, the list information including a first secondary cell identifier group, the first secondary cell identifier group including identifiers of one or more secondary cells; Downlink control information is received from the access network device, where the downlink control information includes a secondary cell sleep indication, where the secondary cell sleep indication is used to indicate that the one or more secondary cells corresponding to the first secondary cell identity group are set to a sleep state.

8. The method according to claim 7, characterized in that Also includes: receiving a configuration message from the access network device, where the configuration message includes configuration information of M secondary cells, the number of the multiple secondary cells corresponding to the first secondary cell identification group is greater than MN, and N is a maximum number of carriers supported by the terminal device for parallel reception of downlink data; Wherein, N is an integer greater than 1, and M is an integer greater than N-1.

9. The method according to claim 7 or 8, characterized in that The one or more secondary cells corresponding to the first secondary cell identification group in the dormant state do not occupy the downlink processing capability of the terminal device.

10. The method according to claim 8 or 9, characterized in that The configuration information of the secondary cell also includes a sleep capability. When the sleep capability is enabled, the secondary cell in the sleep state does not occupy the downlink processing capability of the terminal device.

11. A communication method, characterized in that: include: Sending list information to a terminal device, where the list information includes a first secondary cell identifier group, where the first secondary cell identifier group includes identifiers of one or more secondary cells; Downlink control information is sent to the terminal device, where the downlink control information includes a secondary cell sleep indication, and the secondary cell sleep indication is used to indicate that the one or more secondary cells corresponding to the first secondary cell identity group are in a sleep state.

12. The method according to claim 11, characterized in that Also includes: Sending a configuration message to the terminal device, where the configuration message includes configuration information of M secondary cells, the number of the multiple secondary cells corresponding to the first secondary cell identifier group is greater than MN, and N is a maximum number of carriers for sending downlink data to the terminal device in parallel; Wherein, N is an integer greater than 1, and M is an integer greater than N-1.

13. A communication device, characterized in that: The method comprises a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices and transmit them to the processor or send signals from the processor to other communication devices, and the processor is used to implement the method as described in any one of claims 1 to 12 through a logic circuit or executing code instructions.

14. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction. When the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 12 is implemented.

15. A communication device, characterized in that: Comprising means for performing the method as claimed in any one of claims 1 to 12.

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