Uplink transmission method and related equipment

Abstract

The invention provides an uplink transmission method and related equipment, in the method, terminal equipment receives configuration information of a first cell, and the first cell is only used for uplink transmission; the terminal device receives a first signal of a second cell, the first signal being used for determining at least one of time-frequency synchronization of the first cell, transmission power of an uplink channel of the first cell, and radio resource management of the first cell. Wherein the first cell is only used for uplink transmission, and after the terminal device receives the configuration information of the first cell, the terminal device can access the network device through the first cell to realize uplink communication. Therefore, since the first cell is only used for uplink transmission, the number of downlink carriers needing to be detected by the terminal device is reduced, and the complexity and power consumption of the terminal device are further reduced.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an uplink transmission method and related equipment. Background Art

[0002] Wireless communication can be a transmission communication between two or more communication nodes that is not transmitted through conductors or cables or is transmitted through air interfaces. For example, the communication nodes include network devices and terminal devices. Generally, the terminal device can access the network device and receive scheduling and instruction information from the network device to achieve wireless communication.

[0003] With the continuous emergence of new services such as high-definition video, virtual reality (VR) / augmented reality (AR), etc., the demand for wireless data traffic in wireless communication systems is growing rapidly. In order to meet the growing demand for wireless transmission, the network capacity and transmission rate of wireless communication systems can be improved by deploying large-scale antennas and transceiver modules that support high-frequency signals. Correspondingly, the power consumption of terminal devices deployed with these transceiver modules will become higher and higher.

[0004] Therefore, how to reduce the power consumption of terminal equipment is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides an uplink transmission method and related equipment for reducing the power consumption of a terminal device.

[0006] In a first aspect, the present application provides an uplink transmission method, which is executed by a terminal device (or terminal), or the method is executed by some components in the terminal device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the functions of the terminal device. In the first aspect and its possible implementation, the uplink transmission method is described as an example in which it is executed by a terminal device. In this method, the terminal device receives configuration information of a first cell, and the first cell is only used for uplink transmission; the terminal device receives a first signal of a second cell, and the first signal is used to determine at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the radio resource management (RRM) of the first cell.

[0007] Based on the above technical solution, the first cell is only used for uplink transmission. After the terminal device receives the configuration information of the first cell, the terminal device can access the network device through the first cell to achieve uplink communication. Therefore, since the first cell is only used for uplink transmission, the number of downlink carriers that the terminal device needs to detect is reduced, thereby reducing the complexity and power consumption of the terminal device.

[0008] In addition, the network device can dynamically shut down the downlink transmission module of the network device according to the change of the downlink traffic in the cell, and switch between the uplink transmission mode only and the uplink and downlink transmission mode, thereby reducing the power consumption of the network device.

[0009] Optionally, the first cell used only for uplink transmission may be referred to as an uplink only (UL only) cell.

[0010] In a possible implementation manner of the first aspect, the configuration information of the first cell is carried in a radio resource control (RRC) message, or the configuration information of the first cell is carried in a broadcast message.

[0011] Based on the above technical solution, the configuration information of the first cell can be carried in an RRC message, so that when the terminal device has an RRC connection with a certain cell (such as a primary cell (PCell)), the terminal device can obtain the configuration information of the first cell used only for uplink transmission through the RRC connection. Alternatively, the configuration information of the first cell can be carried in a broadcast message of a certain cell, so that the terminal device can obtain the configuration information of the first cell used only for uplink transmission through a broadcast communication method, thereby enabling multiple terminal devices to obtain the configuration information of the first cell through the broadcast message, which can reduce overhead and be used for random access.

[0012] In a possible implementation manner of the first aspect, the configuration information of the first cell includes first indication information, and the first indication information indicates the second cell.

[0013] Based on the above technical solution, the configuration information of the first cell may include first indication information indicating the second cell, so that the terminal device can clearly identify the cell referenced by the downlink synchronization / downlink channel measurement of the first cell used only for uplink transmission based on the indication of the network device.

[0014] In a possible implementation manner of the first aspect, the configuration information of the first cell includes second indication information, and the second indication information is used to indicate the first signal.

[0015] Based on the above technical solution, the configuration information of the first cell may include first indication information indicating the first signal, so that the terminal device can clearly identify the signal referenced by the downlink synchronization / downlink channel measurement of the first cell used only for uplink transmission based on the indication of the network device.

[0016] In a possible implementation manner of the first aspect, the second cell is a primary cell, and the first cell is a secondary cell.

[0017] Based on the above technical solution, the terminal device can access the first cell and the second cell in the carrier aggregation scenario. Accordingly, the second cell used for at least downlink transmission of the first signal is the primary cell, and the first cell used only for uplink transmission is the secondary cell (SCell), so that the terminal device can access at least two service cells, and the at least two service cells include at least the second cell used for downlink transmission and the first cell used only for uplink transmission, thereby enabling the terminal device to communicate with the network device through the cell used only for uplink transmission by adding a secondary cell.

[0018] In a possible implementation manner of the first aspect, the method further includes: the terminal device sends third indication information, where the third indication information indicates a first frequency band, wherein the first frequency band supports a cell configuration of uplink transmission only.

[0019] Based on the above technical solution, the terminal device can also send a third indication information indicating the first frequency band, which supports the cell configuration of uplink transmission only, so that the network device can obtain the frequency band supported by the terminal device for uplink transmission only based on the third indication information, so that the network device can configure a cell only for uplink transmission on the frequency band supported by the terminal device.

[0020] In a possible implementation manner of the first aspect, the third indication information further indicates a second frequency band, the first frequency band and the second frequency band are included in a frequency band combination, and the frequency resources of the second cell belong to the second frequency band.

[0021] Based on the above technical solution, the third indication information sent by the terminal device also indicates a second frequency band different from the first frequency band, and the first frequency band and the second frequency band are included in a frequency band combination, so that the network device can obtain the frequency band combination supported by the terminal device based on the third indication information, so that the network device can configure at least two cells on the frequency band combination supported by the terminal device, and then enable the terminal device to communicate with the network device through carrier aggregation in the at least two cells to obtain the gain of carrier aggregation (for example, supporting a larger transmission bandwidth).

[0022] The second aspect of the present application provides an uplink transmission method, which is performed by a network device, or the method is performed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can implement all or part of the network device functions. In the second aspect and its possible implementation, the uplink transmission method is described as being performed by a first network device. In the method, the first network device determines the configuration information of the first cell, and the first cell is only used for uplink transmission; the first network device sends the configuration information of the first cell.

[0023] Based on the above technical solution, the first cell is only used for uplink transmission, and the first network device sends the configuration information of the first cell, so that after the terminal device receives the configuration information of the first cell, the terminal device can access the network device through the first cell to achieve uplink communication. Therefore, since the first cell is only used for uplink transmission, the number of downlink carriers that the terminal device needs to detect is reduced, thereby reducing the complexity and power consumption of the terminal device.

[0024] In addition, the network device can dynamically shut down the downlink transmission module of the network device according to the change of the downlink traffic in the cell, and switch between the uplink transmission mode only and the uplink and downlink transmission mode, thereby reducing the power consumption of the network device.

[0025] In a possible implementation manner of the second aspect, the configuration information of the first cell is carried in an RRC message, or the configuration information of the first cell is carried in a broadcast message.

[0026] Based on the above technical solution, the configuration information of the first cell can be carried in an RRC message, so that when the terminal device has an RRC connection with a cell (such as PCell) in the first network device, the terminal device can obtain the configuration information of the first cell used only for uplink transmission through the RRC connection. Alternatively, the configuration information of the first cell can be carried in a broadcast message of a cell in the first network device, so that the terminal device can obtain the configuration information of the first cell used only for uplink transmission through a broadcast communication method, thereby enabling multiple terminal devices to obtain the configuration information of the first cell through the broadcast message, which can reduce overhead and be used for random access.

[0027] In a possible implementation manner of the second aspect, the configuration information of the first cell includes first indication information, and the first indication information indicates the second cell.

[0028] Based on the above technical solution, the configuration information of the first cell may include first indication information indicating the second cell, so that the terminal device can clearly identify the cell referenced by the downlink synchronization / downlink channel measurement of the first cell used only for uplink transmission based on the indication of the network device.

[0029] In a possible implementation manner of the second aspect, the configuration information of the first cell includes second indication information, and the second indication information is used to indicate the first signal.

[0030] Based on the above technical solution, the configuration information of the first cell may include first indication information indicating the first signal, so that the terminal device can clearly identify the signal referenced by the downlink synchronization / downlink channel measurement of the first cell used only for uplink transmission based on the indication of the network device.

[0031] In a possible implementation of the second aspect, the method also includes: the first network device sends a first signal to the second cell, and the first signal is used to determine at least one of the time and frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell.

[0032] Based on the above technical solution, the first network device can also send the first signal of the second cell, so that after the terminal device receives the first signal of the second cell, the terminal device can determine the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell and at least one of the RRM of the first cell based on the first signal. Thus, the terminal device can obtain the relevant information of the first cell used only for uplink transmission through the first signal of the second cell with downlink transmission capability, so that the terminal device uses the information corresponding to the downlink signals of other cells as the reference result of the first cell used only for uplink transmission, so as to assist the communication between the terminal device and the cell used only for uplink transmission.

[0033] In a possible implementation manner of the second aspect, the second cell is a primary cell, and the first cell is a secondary cell.

[0034] Based on the above technical solution, the terminal device can access the first cell and the second cell in a carrier aggregation scenario. Accordingly, the second cell used for at least downlink transmission of the first signal is the main cell, and the first cell used only for uplink transmission is the SCell, so that the terminal device can access at least two service cells, and the at least two service cells include at least the second cell used for downlink transmission and the first cell used only for uplink transmission, thereby enabling the terminal device to communicate with the network device through the cell used only for uplink transmission by adding a secondary cell.

[0035] In a possible implementation manner of the second aspect, the method further includes: receiving third indication information, where the third indication information indicates a first frequency band, wherein the first frequency band supports a cell configuration of uplink transmission only.

[0036] Based on the above technical solution, the terminal device can also send a third indication information indicating the first frequency band, and the first frequency band supports the cell configuration of uplink transmission only, so that after the first network device receives the third indication information, the first network device can obtain the frequency band supported by the terminal device for uplink transmission only based on the third indication information, so that the first network device can configure a cell only for uplink transmission on the frequency band supported by the terminal device.

[0037] In a possible implementation manner of the second aspect, the third indication information further indicates a second frequency band, the first frequency band and the second frequency band are included in a frequency band combination, and the frequency resources of the second cell belong to the second frequency band.

[0038] Based on the above technical solution, the third indication information sent by the terminal device also indicates a second frequency band different from the first frequency band, and the first frequency band and the second frequency band are included in a frequency band combination, so that the first network device can obtain the frequency band combination supported by the terminal device based on the third indication information, so that the first network device can configure at least two cells on the frequency band combination supported by the terminal device, and then enable the terminal device to communicate with the network device through carrier aggregation in the at least two cells to obtain the gain of carrier aggregation (for example, supporting a larger transmission bandwidth).

[0039] The third aspect of the present application provides an uplink transmission method, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the third aspect and its possible implementation, the uplink transmission method is described as an example in which it is executed by a second network device. In this method, the second network device determines a first signal of a second cell, and the first signal is used to determine the time-frequency synchronization of the first cell, determine the transmission power of the uplink channel of the first cell, and determine at least one of the RRM of the first cell, and the first cell is only used for uplink transmission; the second network device sends the first signal.

[0040] Based on the above technical solution, the first cell is only used for uplink transmission, and the first signal of the second cell sent by the second network device is used to determine the time-frequency synchronization of the first cell, determine the transmission power of the uplink channel of the first cell, and at least one of the RRM of the first cell. That is, after the terminal device receives the first signal, the terminal device can determine the time-frequency synchronization of the first cell, determine the transmission power of the uplink channel of the first cell, and at least one of the RRM of the first cell based on the first signal. Therefore, since the first cell is only used for uplink transmission, the number of downlink carriers that the terminal device needs to detect is reduced, thereby reducing the complexity and power consumption of the terminal device.

[0041] In addition, the network device can dynamically shut down the downlink transmission module of the network device according to the change of the downlink traffic in the cell, and switch between the uplink transmission mode only and the uplink and downlink transmission mode, thereby reducing the power consumption of the network device.

[0042] In a possible implementation manner of the third aspect, the second cell is a primary cell, and the first cell is a secondary cell.

[0043] Based on the above technical solution, the terminal device can access the first cell and the second cell in a carrier aggregation scenario. Accordingly, the second cell used for at least downlink transmission of the first signal is the main cell, and the first cell used only for uplink transmission is the SCell, so that the terminal device can access at least two service cells, and the at least two service cells include at least the second cell used for downlink transmission and the first cell used only for uplink transmission, thereby enabling the terminal device to communicate with the network device through the cell used only for uplink transmission by adding a secondary cell.

[0044] In a possible implementation manner of the third aspect, the method further includes: the second network device receives third indication information, where the third indication information indicates a first frequency band, wherein the first frequency band supports a cell configuration for uplink transmission only.

[0045] Based on the above technical solution, the terminal device can also send a third indication information indicating the first frequency band, which supports the cell configuration of uplink transmission only, so that the network device can obtain the frequency band that the terminal device supports uplink transmission only based on the third indication information.

[0046] In a possible implementation manner of the third aspect, the third indication information further indicates a second frequency band, the first frequency band and the second frequency band are included in a frequency band combination, and the frequency resources of the second cell belong to the second frequency band.

[0047] Based on the above technical solution, the third indication information sent by the terminal device also indicates a second frequency band different from the first frequency band, and the first frequency band and the second frequency band are included in a frequency band combination, so that the network device can obtain the frequency band combination supported by the terminal device based on the third indication information, so that the network device can configure at least two cells on the frequency band combination supported by the terminal device, and then enable the terminal device to communicate with the network device through carrier aggregation in the at least two cells to obtain the gain of carrier aggregation (for example, supporting a larger transmission bandwidth).

[0048] In a fourth aspect of the present application, a communication device is provided, which can implement the method in any possible implementation of any aspect of the first to third aspects mentioned above. The device includes corresponding units or modules for executing the above methods. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a terminal device or a network device, or the device can be a component in a terminal device or a network device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the functions of the terminal device or the network device. Among them, the device includes a processing unit and a transceiver unit, and the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation of any aspect of the first to third aspects, and achieve the corresponding technical effects. For details, please refer to the above description, which will not be repeated here.

[0049] In a fifth aspect, the present application provides a communication device, comprising at least one processor, wherein the at least one processor is used to execute programs or instructions in a memory so that the device implements the method described in any possible implementation method of any aspect of the first to third aspects.

[0050] In a sixth aspect, an embodiment of the present application provides a communication device, including at least one logic circuit and an input / output interface; the logic circuit is used to execute the method described in any possible implementation method of any aspect of the first to third aspects.

[0051] A seventh aspect of an embodiment of the present application provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes a method as described in any possible implementation of any aspect of the first to third aspects above.

[0052] An eighth aspect of an embodiment of the present application provides a computer program product (or computer program). When the computer program in the computer program product is executed by the processor, the processor executes the method described in any possible implementation of any one of the first to third aspects above.

[0053] A ninth aspect of an embodiment of the present application provides a chip system, which includes at least one processor for supporting a communication device to implement functions involved in any possible implementation method of any one of the first to third aspects above.

[0054] In a possible design, the chip system may also include a memory for storing program instructions and data necessary for the first communication device. The chip system may be composed of a chip, or may include a chip and other discrete devices. Optionally, the chip system also includes an interface circuit, which provides program instructions and / or data for the at least one processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of a communication system provided for this application;

[0056] Figure 2 A schematic diagram of a carrier aggregation communication scenario involved in this application;

[0057] Figure 3 This is another schematic diagram of the carrier aggregation communication scenario involved in this application;

[0058] Figure 4 A schematic diagram of the uplink transmission method provided by the present application;

[0059] Figure 5 A schematic diagram of an application scenario of the uplink transmission method provided in this application;

[0060] Figure 6 Another schematic diagram of the uplink transmission method provided by the present application;

[0061] Figure 7 A schematic diagram of a communication device provided for this application;

[0062] Figure 8 Another schematic diagram of a communication device provided by the present application. DETAILED DESCRIPTION

[0063] First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0064] (1) Configuration and pre-configuration: In this application, configuration and pre-configuration will be used at the same time. Configuration refers to the base station or server and other network devices sending some parameter configuration information or parameter values ​​to the terminal through messages or signaling, so that the terminal can determine the communication parameters or resources during transmission based on these values ​​or information. Pre-configuration is similar to configuration. It can be a method in which a base station or server and other network devices send parameter information or values ​​to the terminal through a communication link or carrier; it can also be a definition of corresponding parameters or parameter values ​​given in the standard, or by setting the relevant parameters or values ​​in the terminal device in advance. This application does not limit this. Furthermore, these values ​​and parameters can be changed or updated.

[0065] (2) In this application, "used for indication" may include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used for indicating A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0066] In this application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, it can be implemented by direct indication, such as by indicating the information to be indicated itself or the index of the information to be indicated. It can also be implemented by indirectly indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved with the help of the arrangement order of each information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent.

[0067] The information to be indicated can be sent as a whole, or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in this application. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to the protocol, or can be configured by the transmitting device by sending configuration information to the receiving device. Among them, the configuration information can include, for example but not limited to, one or a combination of at least two of RRC signaling, medium access control (MAC) layer signaling and physical layer signaling. Among them, MAC layer signaling, for example, includes medium access control control element (MAC CE); physical layer signaling, for example, includes downlink control information (DCI).

[0068] (3) Reference signal (RS). In a communication system, it is necessary to estimate the uplink channel or downlink channel in order to send and receive data, obtain system synchronization, and feedback channel information. Channel estimation refers to the process of reconstructing or restoring the received signal in order to compensate for the signal distortion caused by channel fading and noise fading. It uses the reference signal known in advance by the transmitter and receiver to measure the time domain and frequency domain changes of the channel. The above reference signals are also called reference signals or RS. They are distributed on different resource elements (RE) in the two-dimensional space of time and frequency within the orthogonal frequency division multiplexing (OFDM) symbol and have known amplitude and phase.

[0069] (4) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated with each other are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects.

[0070] In addition, in this application, unless otherwise specified, the same or similar parts between the various embodiments can refer to each other. In the various embodiments in this application, and the various methods / designs / implementations in each embodiment, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments and the various methods / designs / implementations in each embodiment are consistent and can be referenced to each other, and the technical features in different embodiments and the various methods / designs / implementations in each embodiment can be combined to form new embodiments, methods, or implementations according to their inherent logical relationships. The implementation methods of this application described below do not constitute a limitation on the scope of protection of this application.

[0071] (5) "Send" and "receive" in the embodiments of the present application indicate the direction of signal transmission. For example, the communication process between entity A and entity B is taken as an example. In the present application, entity A sends information to entity B, which may be A directly sending to B or A indirectly sending to B through other entities. Similarly, entity B receives information from entity A, which may be entity B directly receiving the information sent by entity A or entity B indirectly receiving the information sent by entity A through other entities. Entities A and B here may be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information may be information interaction between a RAN node and a terminal, such as information interaction between a base station and a terminal; the sending and receiving of information may also be information interaction between two RAN nodes, such as information interaction between a CU and a DU; the sending and receiving of information may also be information interaction between different modules inside a device, such as 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. "Send" may also be understood as "output" of a chip interface, and "receive" may also be understood as "input" of a chip interface.

[0072] (6) Carrier aggregation, which can be the aggregation of two or more component carriers (CCs) to support a larger transmission bandwidth.

[0073] In order to efficiently utilize fragmented spectrum, carrier aggregation supports aggregation between different carrier components. For example, the different carrier components may include carrier components of the same or different bandwidths, or adjacent or non-adjacent carrier components in the same frequency band, or carrier components in different frequency bands.

[0074] In addition, in the CA scenario, the cell accessed by the terminal device may include PCell and SCell. Among them, PCell may be determined at the time of connection establishment, and SCell may be added / modified / released through the RRCConnectionReconfiguration message after the initial security activation procedure.

[0075] A serving cell can be a cell that provides services (such as uplink and downlink transmission) to a terminal device. If the terminal device is in the RRC_CONNECTED state but CA is not configured, the terminal device can have one serving cell, namely PCell; if the terminal device is in the RRC_CONNECTED state and CA is configured, the serving cell set of the terminal device includes PCell and one or more SCells. In other words, a serving cell can refer to both PCell and SCell. A PCell or SCell is also a serving cell.

[0076] (7) PRACH uplink access: After the cell search process, the terminal device has achieved downlink synchronization with the cell and can receive downlink data. It also needs to achieve uplink synchronization before uplink transmission. Therefore, it establishes a connection with the cell and achieves uplink synchronization through the random access procedure.

[0077] Specifically, PRACH is used to transmit the random access preamble (preamble for short). One of the steps in the random access process is for the terminal device to send the preamble. The main function of the preamble is to tell the base station side that there is a random access request and enable the base station to estimate the transmission delay between it and the terminal device, so that the base station can calibrate the uplink timing (uplinktiming) and inform the terminal device of the calibration information through the uplink timing (timing advance command).

[0078] The present application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or other communication systems, wherein the communication system includes a network device and a terminal device, the network device serves as a configuration information sending entity, and the terminal device serves as a configuration information receiving entity. Specifically, in the communication system, there is an entity that sends configuration information to another entity, and sends data to another entity, or receives data sent by another entity; another entity receives the configuration information, and sends data to the configuration information sending entity according to the configuration information, or receives data sent by the configuration information sending entity. Among them, the present application can be applied to a terminal device in a connected state or an activated state (ACTIVE), and can also be applied to a terminal device in a non-connected state (INACTIVE) or an idle state (IDLE).

[0079] See also Figure 1 , is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as Figure 1 110a and 110b in the figure, collectively referred to as 110), and 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 (not shown in the figure). The terminal 120 is connected to the RAN node 110 by wireless means, and the RAN node 110 is connected to the core network 200 by wireless or wired means. 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. Terminals and terminals and RAN nodes and RAN nodes may be connected to each other by wired or wireless means.

[0080] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, an 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 (open RAN, O-RAN).

[0081] RAN node, also known as radio 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 NodeB in the sixth generation (6G) mobile communication system, or a base station in a future mobile communication system. RAN nodes can be macro base stations (such as Figure 1 110a), or a micro base station or an indoor station (such as Figure 1110b) in the figure, it can also be a relay node or a donor node.

[0082] 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 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 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 various protocol layers, please refer to the relevant technical specifications of 3GPP. RU can be used to implement the transceiver function of radio frequency signals. CU and DU can be two independent RAN nodes, or they can be integrated in the same RAN node, such as integrated in a baseband unit (BBU). RU can be included in a radio frequency device, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0083] In different systems, RAN nodes may have different names. For example, in an O-RAN system, CU may be called an open CU (open CU, O-CU), DU may be called an open DU (open DU, O-DU), and 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 the convenience of description, the following description takes a base station as an example of a RAN node.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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 with 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.

[0090] In wireless communication systems (such as Figure 1 In the communication system shown in FIG. 1 , with the continuous emergence of new services such as high-definition video, VR / AR, etc., the demand for wireless data traffic is growing rapidly. In order to meet the growing demand for wireless transmission, the network capacity and transmission rate of the wireless communication system can be improved by deploying large-scale antennas and transceiver modules that support high-frequency signals. Accordingly, the power consumption of terminal devices (and / or network devices) deployed with these transceiver modules will become higher and higher.

[0091] In addition, another way to increase the network capacity and transmission rate of the wireless communication system can be achieved by further tapping the frequency resources of wireless communication. Generally speaking, from the dimension of tapping frequency resources, a larger transmission bandwidth can provide a larger network capacity and a higher transmission rate. However, limited by the actual deployed spectrum bandwidth resources and the processing power of the terminal, large-bandwidth continuous spectrum resources are very scarce, that is, the bandwidth of a single carrier is limited. To this end, carrier aggregation (CA) technology is a key technology to solve the problem of limited bandwidth of a single carrier. It aggregates two or more CCs together to serve the terminal device to support a larger transmission band.

[0092] Figure 2 This is an example of a CA implementation. Figure 2 In the CA scenario shown, one or more network devices (only one network device is shown in the figure as an example) can provide n carriers (n is an integer greater than 1), and each carrier can provide one cell. That is, there can be n carriers providing services for the terminal device, that is, the terminal device has n serving cells. Among them, the n serving cells of the terminal device include one PCell and one or more SCells.

[0093] Currently, in the implementation process of carrier aggregation technology, each cell used for CA contains at least one downlink carrier (ie, downlink CC). Figure 3 For example, one implementation method of a cell for CA is shown in cell 1, which includes a downlink CC but not an uplink CC; another implementation method of a cell for CA is shown in cell 2, which includes a downlink CC and an uplink CC; another implementation method of a cell for CA is shown in cell 2, which includes a downlink CC, an uplink CC and another uplink CC (which can be called a supplementary uplink CC). However, in the current implementation of CA technology, any cell needs to configure / use a downlink carrier so that the terminal device can obtain the downlink synchronization and downlink channel quality information of the cell through the downlink carrier, so that the terminal device can obtain the relevant information for accessing the cell (such as cell time-frequency synchronization, the transmission power of the cell's uplink channel and the cell's RRM, etc.) to obtain the network services provided by the cell. This way of configuring / using downlink carriers will inevitably increase the power consumption of terminal devices (and / or) network devices.

[0094] In summary, in order to improve the network capacity and transmission rate of the wireless communication system, whether through the deployment of large-scale antennas and transceiver modules supporting high-frequency signals or through CA technical solutions, it will inevitably lead to an increase in the power consumption of terminal devices (and / or network devices). Therefore, how to reduce the power consumption of terminal devices is a technical problem that needs to be solved urgently.

[0095] In order to solve the above problems, the present application provides an uplink transmission method and device for reducing the power consumption of a terminal device, which will be described in detail below with reference to the accompanying drawings.

[0096] See also Figure 4 , is a schematic diagram of an implementation of the uplink transmission method provided in the present application, and the method includes the following steps.

[0097] It should be noted that Figure 4In the example, the terminal device and the first network device are used as the execution subjects of the interaction diagram to illustrate the method, but the present application does not limit the execution subjects of the interaction diagram. Figure 4 In the corresponding implementation method, the execution subject of S401-S402 is the terminal device. The execution subject can also be a chip, chip system, or processor that supports the terminal device to implement the method, or a logic module or software that can realize all or part of the terminal device functions. Figure 4 The first network device in S401-S402 in the corresponding implementation can also be replaced by a chip, a chip system, or a processor that supports the first network device to implement the method, and can also be replaced by a logic module or software that can implement all or part of the functions of the first network device. Figure 6 In the method shown, the execution subject can be a terminal device, a first network device, a second network device, etc., or it can be a chip, a chip system, or a processor that implements the method, or it can be a logic module or software that can implement all or part of the terminal device functions.

[0098] S401. A first network device sends configuration information of a first cell, and correspondingly, a terminal device receives the configuration information of the first cell, wherein the first cell is only used for uplink transmission.

[0099] It should be understood that when a terminal device is within the coverage of a network signal, the terminal device can access the network device and receive the scheduling and instruction information of the network device to achieve wireless communication. The signal coverage range of a network device for sending or receiving signals can be called a cell, and a terminal device within the cell can establish a connection with the cell through a wireless channel to obtain network services. Different signal coverage ranges can be called different cells. Generally, a network device can include one or more cells. Figure 4 In the technical solution shown, the first cell and the second cell can be located in the same network device, that is, the first cell and the second cell are deployed at the same physical site; or, the first cell and the second cell can be located in different network devices, that is, the first cell and the second cell are deployed at different physical sites.

[0100] In the present application, the first cell is only used for uplink transmission, which can be understood as the first cell can communicate based on the uplink carrier but not based on the downlink carrier. Accordingly, the first cell is only used for uplink transmission can be replaced by the first cell only uplink carrier is available, the uplink carrier of the first cell is available and the downlink carrier of the first cell is not available, the downlink carrier of the first cell is not available, the carrier of the first cell is an uplink carrier, the first cell only includes an uplink carrier, the carrier of the first cell includes an uplink carrier and does not include a downlink carrier, the uplink transmission of the first cell is activated, turned on, enabled or enabled, and the downlink transmission of the first cell is deactivated, turned off, dormant, silent, prohibited or disabled. At least one of the following. Similarly, a certain cell (such as the second cell mentioned later) is at least used for downlink transmission, which can be understood as the cell can at least communicate based on the downlink carrier, and optionally, the cell can also communicate based on the uplink carrier. Accordingly, the cell is at least used for downlink transmission can be replaced by the cell at least uplink carrier is available, the downlink carrier of the cell is available, the carrier of the cell at least includes a downlink carrier, and the downlink transmission of the cell is activated, turned on, enabled or enabled.

[0101] Optionally, the first cell used only for uplink transmission may be called a UL only cell.

[0102] Optionally, in step S401, the configuration information of the first cell received by the terminal device may include at least one of the following: an index of the serving cell (i.e., the first cell), a physical cell identifier (PCI), uplink carrier configuration information, the position of the first symbol of the uplink and downlink demodulation reference signals (DMRS), the downlink (DL) configuration of the (time division duplexing, TDD) cell, the uplink (UL) configuration of the TDD cell, the frequency band associated with the downlink carrier, the absolute frequency number of the common physical resource block 0 associated with the downlink carrier, the frequency band associated with the uplink carrier, the absolute frequency number of the common physical resource block 0 associated with the uplink carrier, cross-carrier scheduling configuration, timing advance group identifier (ID), downlink carrier unavailable indication information, and downlink carrier indication information.

[0103] It is understandable that, since the first cell is only used for uplink transmission, the configuration information of the first cell may include the relevant configuration information of one or more uplink carriers of the first cell, and may not include the relevant configuration information of the downlink carrier. For example, for the TDD frequency band, the frequency band associated with the downlink carrier and the absolute frequency point number of the public physical resource block 0 associated with the downlink carrier may not be configured, but the frequency band associated with the uplink carrier and the absolute frequency point number of the public physical resource block 0 associated with the uplink carrier need to be configured.

[0104] In a possible implementation, in step S401, the configuration information of the first cell received by the terminal device is carried in an RRC message (e.g., an RRC message specific to the terminal device), or the configuration information of the first cell received by the terminal device is carried in a broadcast message. Specifically, the configuration information of the first cell may be carried in an RRC message, so that when the terminal device has an RRC connection with a certain cell (e.g., a PCell), the terminal device can obtain the configuration information of the first cell used only for uplink transmission through the RRC connection. Alternatively, the configuration information of the first cell may be carried in a broadcast message of a certain cell, so that the terminal device can obtain the configuration information of the first cell used only for uplink transmission through a broadcast communication method, thereby enabling multiple terminal devices to obtain the configuration information of the first cell through the broadcast message, which can reduce overhead and be used for random access.

[0105] Optionally, the configuration information of the first cell may be carried in MAC CE, DCI, etc., or other signaling, which is not limited here.

[0106] As an implementation example, in step S401, the configuration information of the first cell is used to carry a terminal device-specific RRC message as an example. The RRC message may be sent by the PCell to which the terminal device is connected (the PCell is located in the first network device). For example, the PCell may reuse the configuration information element of the secondary cell in the RRC message for carrier aggregation to carry the configuration information of the first cell, but does not configure the configuration information related to the downlink carrier. As another example, the PCell may configure a new element in the RRC message, and the newly configured element is used to carry the configuration information of the cell used only for uplink transmission (i.e., the configuration information of the first cell). As another example, the PCell may reuse the configuration information element of the secondary cell in the RRC message for carrier aggregation to carry the configuration information of the first cell, and at the same time add downlink unavailable indication information in the configuration information.

[0107] As another implementation example, in step S402, the configuration information of the first cell is carried in the broadcast message of cell M. For example, the terminal device can access the downlink of cell M through a blind synchronization signal block (synchronization signal / physical broadcast channel block, SSB), and at the same time receive the broadcast information of cell M, the broadcast message can be a system information block (system information block, SIB), and the broadcast message includes the configuration information of the first cell and / or the uplink carrier information of cell M. In this case, the terminal device can communicate with cell M and / or the network device where the first cell is located through carrier aggregation, wherein cell M can be the PCell of the first cell.

[0108] Optionally, when the configuration information of the first cell is carried in the broadcast message of cell M, terminal devices with different capabilities obtain different information.

[0109] For example, a terminal device that does not support CA of the frequency band combination corresponding to cell M and the first cell or a terminal device that does not support uplink-only transmission can receive uplink carrier information of cell M, access cell M, and enter a connected state.

[0110] As another example, for a terminal device that supports CA of a frequency band combination corresponding to cell M and the first cell, the terminal device receives the uplink carrier information of cell M and the configuration information of the first cell at the same time, and then enters the CA state. During the uplink PRACH process, the terminal device can determine the uplink carrier for sending RACH and / or information 3 according to the channel condition or the uplink resource allocation state. The uplink carrier can be the uplink carrier of cell M or the uplink carrier of the first cell. Exemplarily, the terminal device can determine the SSB received signal strength threshold by configuration or pre-configuration. When the SSB received signal strength is greater than the threshold, the uplink carrier of cell M is selected. When the SSB received signal strength is less than or equal to the threshold, the uplink carrier of the first cell is selected.

[0111] S402. The first network device sends a first signal of the second cell, and correspondingly, the terminal device receives the first signal of the second cell, wherein the first signal is used to determine at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell.

[0112] It should be noted that in step S402, the first signal is used to determine the time-frequency synchronization of the first cell, which can be replaced by: the terminal device can determine the time-frequency synchronization information of the first cell based on the time-frequency synchronization information of the second cell, such as sharing the time-frequency synchronization information. The first signal is used to determine the transmission power of the uplink channel of the first cell, which can be replaced by: the terminal device can determine the transmission power of the uplink channel of the first cell based on the downlink signal of the second cell. The first signal is used to determine the RRM of the first cell, which can be replaced by: the terminal device can determine the RRM of the first cell based on the RRM of the second cell. In other words, the first cell can share the relevant information of the second cell.

[0113] Among them, for the terminal device, it is generally necessary to obtain relevant information of a cell (such as determining the time-frequency synchronization of the cell, determining the transmission power and RRM of the uplink channel, etc.) through downlink transmission (such as downlink signaling / downlink signal / downlink signal / downlink information, etc.). Since the first cell is only used for uplink transmission, the first cell cannot determine the relevant information of the first cell through downlink transmission. For this reason, the relevant information of the first cell can refer to the relevant information of other cells. Correspondingly, the first cell is associated with the second cell, which can be understood as the relevant information of the first cell can refer to the relevant information of the second cell, that is, the time-frequency synchronization information of the second cell can be used to determine the time-frequency synchronization of the first cell, the path loss determined by the second cell can be used to determine the transmission power of the uplink channel of the first cell, and the RRM measurement result confirmed by the second cell can be used to determine the RRM of the first cell. Specifically, the signal / information / signaling sent downlink by the second cell can be used to determine the time-frequency synchronization of the first cell, determine the transmission power of the uplink channel of the first cell and at least one of the RRM of the first cell, so as to realize the communication between the terminal device and the first cell that only transmits uplink.

[0114] After step S402, the terminal device can determine the time and frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell and at least one of the RRM of the first cell based on the first signal, which will be described below in conjunction with some implementation methods.

[0115] Implementation method 1: after step S402, the terminal device determines the time-frequency synchronization of the first cell based on the first signal. In other words, the terminal device can determine the time-frequency synchronization information of the first cell based on the time-frequency synchronization information of the second cell, such as shared time-frequency synchronization information.

[0116] Implementation method 2: after step S402, the terminal device determines the transmission power of the uplink channel of the first cell based on the first signal.

[0117] In implementation mode 2, the terminal device can obtain the path loss based on the first signal, and the parameter can be used to determine the transmission power of the uplink channel of the first cell. For example, the parameter can be used as one of the parameters for determining the transmission power of uplink channels such as the physical uplink control channel (PUCCH), the physical uplink shared channel (PUSCH), and the physical random access channel (PRACH) of the first cell.

[0118] Implementation method three: after step S402, the terminal device determines the RRM of the first cell based on the first signal.

[0119] Optionally, the RRM of the first cell may include at least one of intra-frequency cell measurement, inter-frequency cell measurement, and inter-radio access technology (radio access technology, RAT) measurement.

[0120] In implementation mode 3, after obtaining a measurement result through at least one of intra-frequency cell measurement, inter-frequency cell measurement, and inter-RAT measurement, the network device can update the serving cell of the terminal device based on the measurement result, such as deleting cells with poor signal quality and adding cells with good signal quality. Figure 3 In the implementation example shown, the cell management of a cell generally requires the signal reception quality information based on the downlink reference signal of the cell as the measurement result. Figure 4 In the implementation process shown, since the first cell is only used for downlink transmission, the first cell can perform downlink channel measurement through the first signal from other cells (such as the second cell) to obtain downlink channel information (the downlink channel information can be used as a reference factor for the signal reception quality information of the downlink reference signal of the first cell), thereby enabling cell management of cells with only uplink transmission.

[0121] In addition, as mentioned above Figure 3 In the implementation example shown, a conventional cell (eg Figure 3 The cell management of uplink channels (such as PUCCH, PUSCH, PRACH, etc.) of cells 1, 2, and 3 in the network (including at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell) generally needs to be obtained based on the downlink channel information of the downlink signal. Figure 4In the implementation process shown, since the first cell is only used for downlink transmission, the first cell can obtain downlink channel information by performing downlink channel measurement through the first signal from other cells (such as the second cell), and use the downlink channel information to determine the cell management of the first cell. Therefore, in step S402, the terminal device uses the information corresponding to the downlink signal of other cells as a reference result of the first cell only used for uplink transmission, so that the terminal device can implement the cell management of the first cell only used for uplink transmission.

[0122] Optionally, in addition to using the first signal of the second cell as a basis for determining cell management of the first cell (including at least one of time-frequency synchronization of the first cell, transmit power of the uplink channel of the first cell and RRM of the first cell), in order to select a suitable uplink carrier, the uplink channel information corresponding to the uplink signal sent by the terminal device to the first cell may be used for cell management. For example, the uplink signal sent by the terminal device to the first cell may include one or more of a channel sounding reference signal (SRS), a signal carried on PUSCH, a signal carried on PRACH, and a signal carried on PUSCH.

[0123] Optionally, in the above technical solution, the cell used for downlink synchronization information reference, the cell used for path loss reference, and the cell used for downlink measurement reference are all the second cell. In actual applications, the cell used for downlink synchronization information reference, the cell used for path loss reference, and the cell used for downlink measurement reference can be configured independently, that is, configured separately using three different information elements, or can be configured uniformly, that is, configured uniformly using one information element.

[0124] In one possible implementation, in step S401, the configuration information of the first cell received by the terminal device includes first indication information, and the first indication information indicates the second cell. Specifically, the configuration information of the first cell may include first indication information indicating the second cell, so that the terminal device can, based on the indication of the network device, clearly identify the cell referenced by the downlink synchronization / downlink channel measurement of the first cell used only for uplink transmission. Thereby, after the terminal device receives the first signal of the second cell in step S402, the terminal device can determine at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell based on the signal from the second cell.

[0125] Optionally, the first indication information may indicate the second cell in a variety of ways, for example, the first indication information includes a cell identifier, PCI, etc. of the second cell.

[0126] Optionally, when the second cell includes at least two downlink carriers, the first signal of the second cell may come from any downlink carrier of the at least two downlink carriers. Alternatively, the first signal of the second cell may come from a certain downlink carrier of the at least two downlink carriers, and accordingly, the first indication information may also indicate the certain downlink carrier.

[0127] Optionally, the terminal device can obtain the second cell by means of standard / protocol pre-configuration to save overhead, for example, pre-configuring the second cell as the PCell of the terminal device, or the second cell is the cell with the best signal quality among the cells in which the signal quality of the downlink signal measured by the terminal device is greater than a threshold. Similarly, the terminal device can obtain the first signal by means of standard / protocol pre-configuration to save overhead.

[0128] In one possible implementation, in step S401, the configuration information of the first cell received by the terminal device includes second indication information, and the second indication information is used to indicate the first signal. Specifically, the configuration information of the first cell may include first indication information indicating the first signal, so that the terminal device can, based on the indication of the network device, clearly identify the signal referenced by the downlink synchronization / downlink channel measurement of the first cell used only for uplink transmission. Thereby, after the terminal device receives the first signal of the second cell in step S402, the terminal device can determine at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell based on the first signal.

[0129] Optionally, the second indication information may indicate the first signal in a variety of ways, for example, the second indication information includes an index, an identifier, a resource index, a resource identifier, etc. of the first signal.

[0130] Optionally, the first signal may include SSB, channel state information reference signal (channel state information reference siganl, CSI-RS) or other signals, which are not limited here.

[0131] In one possible implementation, the second cell is a primary cell, and the first cell is a secondary cell. Specifically, the terminal device can access the first cell and the second cell in a carrier aggregation scenario. Accordingly, the second cell at least used for downlink transmission of the first signal is the primary cell, and the first cell only used for uplink transmission is the SCell, so that the terminal device can access at least two service cells, and the at least two service cells include at least a second cell used for downlink transmission and a first cell only used for uplink transmission, thereby enabling the terminal device to communicate with the network device through the cell only used for uplink transmission by adding a secondary cell. For example, Figure 5As shown, the terminal device can communicate with the network device through CA via PCell (for example, PCell can be the second cell) and SCell (for example, SCell can be the first cell), wherein PCell includes a downlink CC and an uplink CC, and SCell is only used for uplink transmission, that is, the SCell includes an uplink CC (but not a downlink CC).

[0132] In a possible implementation, before step S401, the method further includes: the terminal device sends third indication information, the third indication information indicating the first frequency band, wherein the first frequency band supports the cell configuration of only uplink transmission. Specifically, the terminal device may also send third indication information indicating the first frequency band, the first frequency band supports the cell configuration of only uplink transmission, so that the first network device can learn the frequency band that the terminal device supports only uplink transmission based on the third indication information, so that the first network device can configure a cell only for uplink transmission on the frequency band supported by the terminal device.

[0133] Optionally, the third indication information also indicates a second frequency band, the first frequency band and the second frequency band are included in a frequency band combination, and the frequency resources of the second cell belong to the second frequency band. Specifically, the third indication information sent by the terminal device also indicates a second frequency band different from the first frequency band, and the first frequency band and the second frequency band are included in a frequency band combination, so that the network device can obtain the frequency band combination supported by the terminal device based on the third indication information, so that the network device can configure at least two cells on the frequency band combination supported by the terminal device, thereby enabling the terminal device to communicate with the network device in the at least two cells by means of carrier aggregation to obtain the gain of carrier aggregation (for example, supporting a larger transmission bandwidth).

[0134] Optionally, the second frequency band supports cell configuration for downlink transmission.

[0135] Optionally, the first frequency band and the second frequency band completely overlap, or the first frequency band and the second frequency band partially overlap, or the first frequency band and the second frequency band do not overlap at all.

[0136] It should be noted that, in order to adapt to the capabilities of the terminal device, the frequency bands of the first cell and other cells can be adapted to the capabilities of the terminal device, that is, when the network device configures the first cell and the other cells (for example, configuring the first cell and other cells only for uplink transmission in the CA scenario), it can refer to the third indication information reported by the terminal device. For ease of description, in the following example, the cell only used for uplink transmission is recorded as UL only cell, and the other cell is recorded as associated cell.

[0137] In an implementation example, a new frequency band combination may be preconfigured or predefined, the frequency band combination including the frequency band of the UL only cell and the frequency band of the associated cell, such as the predefined combination n1-UL-n2, then the UL only cell of frequency band n2 may be associated with the cell of frequency band n1. The terminal device may report the frequency band combination supported by the terminal device in the third indication information based on the predefined frequency band combination, so that the network device may configure the first cell and the other cells according to the capability of the terminal device.

[0138] In another implementation example, the frequency band combination of the UL only cell and the associated cell reuses the frequency band combination of the current carrier aggregation, that is, multiple bands (bands) supporting carrier aggregation can be associated with each other and / or within the band. When the terminal device reports the frequency band combination that supports carrier aggregation, if the terminal device does not report the downlink feature set corresponding to the frequency band, then the network device considers that the terminal device supports the configuration of UL only on the frequency band, and the cells of other frequency bands in the frequency band combination can be configured as associated cells of the UL only cell. For example, the frequency band combination {band 1, band 2, band 3, band 4}, the reporting content of band 1 includes the uplink feature set and the downlink feature set, band 2 includes the uplink feature set and the downlink feature set, band 3 includes the uplink feature set, and band 4 includes the uplink feature set, then the network device considers that the terminal device supports the UL only configuration in band 3 and band 4 (only), so that the network device can configure the first cell based on band 3 and band 4.

[0139] In another implementation example, when the terminal device reports the frequency band combination of carrier aggregation, it also displays whether the frequency band in the frequency band combination supports UL only. The difference is that this implementation example displays whether the reported frequency band supports UL only, while the previous implementation example implicitly indicates whether UL only is supported by configuring the downlink feature set. For example, the frequency band combination {band 1, band 2, band 3, band 4}, the reporting content of band 1 includes the uplink feature set and the downlink feature set, the reporting content of band 2 includes the uplink feature set and the downlink feature set, the reporting content of band 3 includes the uplink feature set, the downlink feature set and the UL only capability indication, and the reporting content of band 4 includes the uplink feature set, the downlink feature set and the UL only capability indication, then the network device believes that the terminal device bands 3 and 4 support UL only configuration and DL plus UL cell configuration. Optionally, in this implementation example, the reporting content of bands 3 and 4 can also be the uplink feature set and the UL only capability indication, then the network device believes that the terminal device bands 3 and 4 only support UL only cell configuration.

[0140] In another implementation example, when a terminal device reuses a frequency band combination of carrier aggregation, the frequency bands associated with the frequency bands with UL only capability can be reported in the form of a subset, such as the carrier aggregation frequency band combination {band 1, band 2, band 3, band 4}, the terminal device reports the combination {band 1 (supports UL only), band 2 (supports DL+UL), band 3 (supports DL+UL)}, or the terminal device reports combination 1 {band 1 (supports UL only), band 2 (supports DL+UL)} and band combination 2 {band 1 (supports ULonly), band 3 (supports DL+UL)}, indicating that the UL only cell of band 1 can manage the cells corresponding to bands 2 and 3. Optionally, the terminal device can report a set {band 1, band 2, band 3, band 4}, and the frequency bands supporting ULonly cell configuration in the set can be associated with any frequency band supporting DL+UL cell configuration.

[0141] exist Figure 4 In the illustrated scheme, after the terminal device determines at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell in step S402 (or, after the terminal device determines that the first cell is in an activated state, for example, after the terminal device sends feedback information corresponding to the random access preamble, SRS, or activation signaling of the first cell, the terminal device considers that the first cell is in an activated state), the terminal device can communicate with the network device through the first cell. During the communication process, the terminal device can send at least one of the following information:

[0142] Information carried on the uplink shared channel (UL-SCH);

[0143] Information carried on RACH (for example, if the random access channel timing (RACH assion) is configured, the terminal device can send uplink information on RACH);

[0144] Information carried on PUCCH (for example, if PUCCH is configured, the terminal device can send uplink information on PUCCH);

[0145] SRS (eg, if SRS is configured, the terminal device may send SRS).

[0146] Optionally, at least one item of information sent by the terminal device may be sent via an uplink bandwidth part (BWP), wherein the uplink BWP may be configured to the terminal device via an RRC message (e.g., configuration information of the first cell carried by the RRC message), and the uplink BWP may be a continuous physical resource block in the frequency domain.

[0147] Optionally, in order to achieve better energy-saving effect for terminal devices, an energy-saving BWP (the bandwidth of the energy-saving BWP is smaller than the bandwidth of the uplink BWP) and a timer corresponding to the uplink BWP can be configured or pre-configured for a cell that transmits only uplink (e.g., the first cell). If there is no data communication between the network device and the terminal device within the timer, the terminal device switches from the currently activated uplink BWP to the energy-saving BWP, where the energy-saving BWP can also be configured to the terminal through an RRC message (e.g., the configuration information of the first cell carried by the RRC message).

[0148] Optionally, the energy-saving BWP may be referred to as an uplink default BWP.

[0149] based on Figure 4 In the technical solution shown, the first cell is only used for uplink transmission. After the terminal device receives the configuration information of the first cell in step S401, the terminal device can access the network device through the first cell to achieve uplink communication. Therefore, since the first cell is only used for uplink transmission, the number of downlink carriers that the terminal device needs to detect is reduced, thereby reducing the complexity and power consumption of the terminal device.

[0150] In addition, the terminal device can also receive the first signal of the second cell in step S402, so that the terminal device can determine at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell based on the first signal. Thus, the terminal device can obtain relevant information of the first cell used only for uplink transmission through the first signal of the second cell with downlink transmission capability, so that the terminal device can use the information corresponding to the downlink signal of other cells as the reference result of the first cell used only for uplink transmission, so as to assist the communication between the terminal device and the cell used only for uplink transmission.

[0151] In addition, the aforementioned Figure 3 In the implementation example shown, the cell has a strong binding relationship with the downlink carrier. This restriction is suitable for downlink services with large data volumes. For uplink services with large data volumes or for service scenarios that require secondary cells to improve coverage, this restriction will increase the capabilities and complexity of the terminal device, that is, the terminal device needs to support additional downlink capabilities while obtaining the required uplink resources. Figure 4 In the technical solution shown, for the terminal device, since the first cell is only used for uplink transmission, the number of downlink carriers that the terminal device needs to detect is reduced, thereby reducing the complexity and power consumption of the terminal device.

[0152] exist Figure 4In the illustrated scheme, the first network device may include one or more cells, that is, the signal reception and transmission of the one or more cells are performed through the first network device. The one or more cells may include the first cell, so that the first network device can send the configuration information signal of the cell only used for uplink transmission contained in the network device itself in step S401. Alternatively, the one or more cells may not include the first cell, for example, the first cell is located in other network devices, so that the first network device can send the configuration information signal of the cell only used for uplink transmission contained in other network devices in step S401. For example, a cell in the first network device may be the PCell of the first cell, or the first network device may be a relay device of the other network device, etc. And, in Figure 4 In the illustrated solution, one or more cells in the first network device may include the second cell, so that the first network device may send a first signal of the cell included in the network device itself in step S402.

[0153] In a possible implementation, one or more cells in the first network device may not include the second cell. For example, the second cell is located in another network device (for example, the second network device). In this case, the first signal received by the terminal device in the above step S402 may no longer be received through the first network device. Figure 6 The implementation process shown is used to describe this situation.

[0154] S601. A first network device sends configuration information of a first cell, and correspondingly, a terminal device receives the configuration information of the first cell, wherein the first cell is only used for uplink transmission.

[0155] It should be noted that the implementation process of step S601 can refer to the implementation process of the aforementioned step S401 and achieve the corresponding technical effect, which will not be repeated here.

[0156] S602. The second network device sends a first signal of the second cell, and correspondingly, the terminal device receives the first signal of the second cell, wherein the first signal is used to determine at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell.

[0157] It should be noted that, in step S602, the implementation process of the first signal of the second cell can refer to the implementation process of the first signal of the second cell in the aforementioned step S402, the difference is that in step S602, the first signal is sent through the second network device, while in step S402, the first signal is sent through the first network device. Figure 4 In the implementation process shown, the second cell is located in the first network device; and Figure 6In the illustrated implementation process, the second cell is located in the second network device.

[0158] In one possible implementation, Figure 6 The method shown also includes: the second network device receives third indication information, the third indication information indicates the first frequency band, wherein the first frequency band supports the cell configuration of only uplink transmission. Specifically, the terminal device may also send third indication information indicating the first frequency band, the first frequency band supports the cell configuration of only uplink transmission, so that the second network device can learn the frequency band that the terminal device supports only uplink transmission based on the third indication information.

[0159] Optionally, the third indication information further indicates a second frequency band, the first frequency band and the second frequency band are included in a frequency band combination, and the frequency resources of the second cell belong to the second frequency band.

[0160] It should be noted that the implementation process of the third indication information can also refer to Figure 4 The description of the implementation scheme shown is not repeated here.

[0161] based on Figure 6 In the technical solution shown, the first cell is only used for uplink transmission, and the first signal of the second cell sent by the second network device in step S602 is used to determine the time-frequency synchronization of the first cell, determine the transmission power of the uplink channel of the first cell, and at least one of the RRM of the first cell. That is, after the terminal device receives the first signal in step S602, the terminal device can determine the time-frequency synchronization of the first cell, determine the transmission power of the uplink channel of the first cell, and at least one of the RRM of the first cell based on the first signal. Therefore, since the first cell is only used for uplink transmission, the number of downlink carriers that the terminal device needs to detect is reduced, thereby reducing the complexity and power consumption of the terminal device. In addition, the network device can dynamically shut down the downlink transmission module of the network device according to the change of the downlink traffic volume in the cell, and switch between the uplink transmission only mode and the uplink and downlink transmission mode, thereby reducing the power consumption of the network device.

[0162] See also Figure 7 , the embodiment of the present application provides a communication device 700, which can implement the functions of the communication device in the above method embodiment (the communication device is a terminal device or a first network device or a second network device), and thus can also achieve the beneficial effects of the above method embodiment. In the embodiment of the present application, the communication device 700 can be a communication device, or it can be an integrated circuit or component inside the communication device, such as a chip. The following embodiments are described by taking the communication device 700 as a communication device as an example.

[0163] In a possible implementation, when the device 700 is used to execute the method executed by the terminal device in any of the foregoing embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive configuration information of a first cell, and the first cell is only used for uplink transmission; the transceiver unit 702 is also used to receive a first signal of a second cell; the processing unit 701 is used to determine at least one of the time and frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell based on the first signal.

[0164] In one possible implementation, when the device 700 is used to execute the method executed by the first network device in any of the aforementioned embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the processing unit 701 is used to determine the configuration information of the first cell, which is only used for uplink transmission; the transceiver unit 702 is used to send the configuration information of the first cell.

[0165] In a possible implementation, when the device 700 is used to execute the method executed by the second network device in any of the aforementioned embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the processing unit 701 is used to determine a first signal of the second cell, and the first signal is used to determine the time and frequency synchronization of the first cell, determine the transmission power of the uplink channel of the first cell and at least one of the RRM of the first cell, and the first cell is only used for uplink transmission; the transceiver unit 702 is used to send the first signal.

[0166] It should be noted that the information execution process and other contents of the units of the above-mentioned communication device 700 can be specifically referred to the description in the method embodiment shown in the above-mentioned application, and will not be repeated here.

[0167] See also Figure 8 , is another schematic structural diagram of a communication device 800 provided in the present application, wherein the communication device 800 includes a logic circuit 801 and an input / output interface 802. The communication device 800 may be a chip or an integrated circuit. Figure 7 The transceiver unit 702 shown may be a communication interface, which may be Figure 8 The input / output interface 802 in the communication interface may include an input interface and an output interface. Alternatively, the communication interface may also be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0168] Optionally, the input-output interface 802 is used to determine that the transceiver unit is used to receive configuration information of a first cell, and the first cell is only used for uplink transmission; the input-output interface 802 is also used to receive a first signal of a second cell; the logic circuit 801 is used to determine at least one of the time-frequency synchronization of the first cell, the transmission power of the uplink channel of the first cell, and the RRM of the first cell based on the first signal.

[0169] Optionally, the logic circuit 801 is used to determine configuration information of a first cell, where the first cell is only used for uplink transmission; and the input / output interface 802 is used to send the configuration information of the first cell.

[0170] Optionally, the logic circuit 801 is used to determine a first signal of the second cell, the first signal being used to determine the time and frequency synchronization of the first cell, determining at least one of the transmission power of the uplink channel of the first cell and the RRM of the first cell, and the first cell is only used for uplink transmission; the input-output interface 802 is used to send the first signal.

[0171] Among them, the logic circuit 801 and the input and output interface 802 can also execute other steps executed by the terminal device or the network device in any embodiment and achieve corresponding beneficial effects, which will not be repeated here.

[0172] In one possible implementation, Figure 7 The processing unit 701 shown can be Figure 8 The logic circuit 801 in.

[0173] Optionally, the logic circuit 801 may be a processing device, and the functions of the processing device may be partially or completely implemented by software. The functions of the processing device may be partially or completely implemented by software.

[0174] Optionally, the processing device may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform corresponding processing and / or steps in any one of the method embodiments.

[0175] Alternatively, the processing device may include only a processor. A memory for storing a computer program is located outside the processing device, and the processor is connected to the memory via a circuit / wire to read and execute the computer program stored in the memory. The memory and the processor may be integrated together, or may be physically independent of each other.

[0176] Optionally, the processing device may be one or more chips, or one or more processors.

[0177] 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), network processors (NP), field programmable gate arrays (FPGA), programmable logic devices (PLD), 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.

[0178] An embodiment of the present application also provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method described in the possible implementation methods of the terminal device or network device in the above embodiments.

[0179] An embodiment of the present application also provides a computer program product (or computer program). When the computer program in the computer program product is executed by the processor, the processor executes the method of the possible implementation mode of the above-mentioned terminal device or network device.

[0180] The embodiment of the present application also provides a chip system, which includes at least one processor for supporting a communication device to implement the functions involved in the possible implementation methods of the above-mentioned communication device. Optionally, the chip system also includes an interface circuit, which provides program instructions and / or data for the at least one processor. In one possible design, the chip system may also include a memory, which is used to store the necessary program instructions and data for the communication device. The chip system can be composed of chips, or it can include chips and other discrete devices, wherein the communication device can specifically be a terminal device or a network device in the aforementioned method embodiment.

[0181] An embodiment of the present application also provides a communication system, which includes the terminal device and the first network device in any of the above embodiments, or the communication system includes the terminal device and the second network device in any of the above embodiments, or the communication system includes the terminal device and the first network device and the second network device in any of the above embodiments.

[0182] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0183] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0184] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by 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 the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may 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 may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may 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 may 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 may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, 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.

[0189] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0190] 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. An uplink transmission method, characterized in that: Executed by a terminal or a module applied to a terminal, including: receiving configuration information of a first cell, where the first cell is used only for uplink transmission; A first signal of a second cell is received, where the first signal is used to determine at least one of time and frequency synchronization of the first cell, transmission power of an uplink channel of the first cell, and radio resource management RRM of the first cell.

2. The method according to claim 1, characterized in that The configuration information of the first cell includes first indication information, and the first indication information indicates the second cell.

3. The method according to claim 1 or 2, characterized in that: The configuration information of the first cell includes second indication information, and the second indication information is used to indicate the first signal.

4. The method according to any one of claims 1 to 3, characterized in that: The second cell is a primary cell, and the first cell is a secondary cell.

5. The method according to any one of claims 1 to 4, characterized in that: The first signal includes a synchronization signal block SSB and / or a channel state information reference signal CSI-RS.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: Send third indication information, where the third indication information indicates a first frequency band, wherein the first frequency band supports a cell configuration of uplink transmission only.

7. The method according to claim 6, characterized in that: The third indication information further indicates a second frequency band, the first frequency band and the second frequency band are included in a frequency band combination, and the frequency resources of the second cell belong to the second frequency band.

8. An uplink transmission method, characterized in that: Executed by a network device or a module applied to a network device, including: Sending configuration information of a first cell, where the first cell is used only for uplink transmission; A first signal is sent to a second cell, where the first signal is used to determine at least one of time and frequency synchronization of the first cell, transmit power of an uplink channel of the first cell, and radio resource management RRM of the first cell.

9. The method according to claim 8, characterized in that The configuration information of the first cell includes first indication information, and the first indication information indicates the second cell.

10. The method according to claim 8 or 9, characterized in that: The configuration information of the first cell includes second indication information, and the second indication information is used to indicate the first signal.

11. The method according to any one of claims 8 to 10, characterized in that: The second cell is a primary cell, and the first cell is a secondary cell.

12. The method according to any one of claims 8 to 11, characterized in that The first signal includes a synchronization signal block SSB and / or a channel state information reference signal CSI-RS.

13. The method according to any one of claims 8 to 12, characterized in that The method further comprises: Third indication information is received, where the third indication information indicates a first frequency band, wherein the first frequency band supports a cell configuration for uplink transmission only.

14. The method according to claim 13, characterized in that: The third indication information further indicates a second frequency band, the first frequency band and the second frequency band are included in a frequency band combination, and the frequency resources of the second cell belong to the second frequency band.

15. A communication device, characterized in that: including a transceiver unit and a processing unit; Wherein, the transceiver unit and the processing unit are used to execute the method according to any one of claims 1 to 14.

16. A communication device, characterized in that: The method comprises at least one processor coupled to a memory; the at least one processor is configured to execute the method according to any one of claims 1 to 14.

17. A 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 14 is implemented.

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