Uplink transmission method and related device

Abstract

The present application provides an uplink transmission method and a related device. The method comprises: a terminal device receives configuration information of a first cell, wherein the first cell is used for only uplink transmission; and the terminal device receives a first signal of a second cell, the first signal being used for determining time-frequency synchronization of the first cell, and determining at least one of the transmission power of an uplink channel of the first cell and radio resource management of the first cell. The first cell is used for only uplink transmission, and after receiving the configuration information of the first cell, the terminal device can access a network device by means of the first cell to realize uplink communication. Therefore, the first cell is used for only uplink transmission, so that the number of downlink carriers needing to be detected by the terminal device is reduced, thereby reducing the complexity and power consumption of the terminal device.

Description

Uplink transmission method and related equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on August 11, 2023, with application number 202311017611.2 and application name “An uplink transmission method and related equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to an uplink transmission method and related equipment. Background Art

[0003] Wireless communication can be the transmission of information between two or more communication nodes without using conductors or cables, or over the air. For example, communication nodes include network devices and terminal devices. Generally, terminal devices can access network devices and receive scheduling and instruction information from them to achieve wireless communication.

[0004] With the continuous emergence of new services such as high-definition video and virtual reality (VR) / augmented reality (AR), the demand for wireless data traffic in wireless communication systems is rapidly increasing. To meet this growing demand for wireless transmission, the deployment of large-scale antennas and transceiver modules that support high-frequency signals can increase the network capacity and transmission rate of wireless communication systems. Consequently, the power consumption of the terminal devices equipped with these transceiver modules will increase.

[0005] Therefore, how to reduce the power consumption of terminal equipment is a technical problem that needs to be solved urgently.

[0006] Summary of the Invention

[0007] The present application provides an uplink transmission method and related equipment for reducing the power consumption of terminal equipment.

[0008] 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 terminal device functions. In the first aspect and its possible implementation, the uplink transmission method is described as being executed by a terminal device. In this method, the terminal device receives configuration information of a first cell, which is only used for uplink transmission; the terminal device receives a first signal of a second cell, which 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.

[0009] Based on the above technical solution, the first cell is used only 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.

[0010] In addition, the network equipment can dynamically shut down the downlink transmission module of the network equipment according to the changes in the downlink traffic volume 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 equipment.

[0011] Optionally, the first cell used only for uplink transmission may be referred to as an uplink only (UL only) cell.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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 specify the cell referenced for 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 configuration information of the first cell includes second indication information, and the second indication information is used to indicate the first signal.

[0017] 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.

[0018] In a possible implementation manner of the first aspect, the second cell is a primary cell, and the first cell is a secondary cell.

[0019] 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 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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).

[0024] In a second aspect of the present application, there is provided 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 realize 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 this method, the first network device determines the configuration information of a first cell, which is used only for uplink transmission; the first network device sends the configuration information of the first cell.

[0025] Based on the above technical solution, the first cell is used only for uplink transmission. The first network device sends configuration information for the first cell, so that after the terminal device receives the configuration information for the first cell, the terminal device can access the network device through the first cell to achieve uplink communication. Therefore, because the first cell is used only 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.

[0026] In addition, the network equipment can dynamically shut down the downlink transmission module of the network equipment according to the changes in the downlink traffic volume 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 equipment.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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 specify the cell referenced for 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 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.

[0032] 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.

[0033] In a possible implementation of the second aspect, the method further includes: the first network device sends a first signal of the second cell, where 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.

[0034] 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 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 a 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.

[0035] In a possible implementation manner of the second aspect, the second cell is a primary cell, and the first cell is a secondary cell.

[0036] 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.

[0037] 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.

[0038] 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 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.

[0039] 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.

[0040] 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).

[0041] 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 being 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.

[0042] 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 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. That is, after the terminal device receives the first signal, 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. 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.

[0043] In addition, the network equipment can dynamically shut down the downlink transmission module of the network equipment according to the changes in the downlink traffic volume 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 equipment.

[0044] In a possible implementation manner of the third aspect, the second cell is a primary cell, and the first cell is a secondary cell.

[0045] 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.

[0046] In a possible implementation manner of the third aspect, the method further includes: the second network device receiving 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.

[0047] 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 know the frequency band that the terminal device supports uplink transmission only based on the third indication information.

[0048] 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.

[0049] 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).

[0050] The fourth aspect of the present application provides a communication device, 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 component 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 corresponding technical effects. For details, please refer to the above description and will not be repeated here.

[0051] In a fifth aspect, the present application provides a communication device comprising at least one processor, wherein the at least one processor is configured to execute a program or instruction in a memory so that the device implements the method described in any possible implementation of any one of the first to third aspects.

[0052] In a sixth aspect, an embodiment of the present application provides a communication device, comprising at least one logic circuit and an input / output interface; the logic circuit is used to execute the method described in any possible implementation of any of the first to third aspects above.

[0053] 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 the method described in any possible implementation of any aspect of the first to third aspects above.

[0054] 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.

[0055] A ninth aspect of an embodiment of the present application provides a chip system comprising at least one processor for supporting a communication device to implement functions involved in any possible implementation of any one of the first to third aspects above.

[0056] In one possible design, the chip system may further 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 components. Optionally, the chip system may further include an interface circuit that provides program instructions and / or data to the at least one processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] FIG1 is a schematic diagram of a communication system provided by the present application;

[0058] FIG2 is a schematic diagram of a carrier aggregation communication scenario involved in this application;

[0059] FIG3 is another schematic diagram of a carrier aggregation communication scenario involved in this application;

[0060] FIG4 is a schematic diagram of an uplink transmission method provided by the present application;

[0061] FIG5 is a schematic diagram of an application scenario of the uplink transmission method provided in the present application;

[0062] FIG6 is another schematic diagram of the uplink transmission method provided by the present application;

[0063] FIG7 is a schematic diagram of a communication device provided by the present application;

[0064] FIG8 is another schematic diagram of the communication device provided in this application. DETAILED DESCRIPTION

[0065] First, some of the terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0066] (1) Configuration and pre-configuration: In this application, configuration and pre-configuration will be used at the same time. Configuration refers to the network equipment such as base stations or servers 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 way for network equipment such as base stations or servers to send parameter information or values ​​to the terminal through a communication link or carrier; it can also be a way to give the definition of corresponding parameters or parameter values ​​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.

[0067] (2) In this application, “used for indication” can include direct indication and indirect indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0068] 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, stipulated in the protocol), thereby reducing the indication overhead to a certain extent.

[0069] 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 predefined, for example, predefined according to a protocol, or configured by the transmitting device by sending configuration information to the receiving device. Among them, the configuration information can, for example, but not limited to, include 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 a medium access control control element (MAC CE); physical layer signaling, for example, includes downlink control information (DCI).

[0070] (3) Reference signal (RS). In a communication system, it is necessary to estimate the uplink 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 recovering the received signal in order to compensate for the signal distortion caused by channel fading and noise fading. It uses a reference signal known in advance by the transmitter and receiver to measure the time and frequency domain changes of the channel. The above-mentioned 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.

[0071] (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 "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects 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 or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. In addition, 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.

[0072] 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 of this application, and the various methods / designs / implementations in each embodiment, if there is no special explanation 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. 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.

[0073] (5) "Sending" and "receiving" 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, when entity A sends information to entity B, it can be that A sends it directly to B, or that A sends it indirectly to B through other entities. Similarly, when entity B receives information from entity A, it can be that entity B directly receives the information sent by entity A, or that entity B indirectly receives the information sent by entity A through other entities. Entities A and B here can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0074] (6) Carrier aggregation, which can be the aggregation of two or more component carriers (CCs) to support a larger transmission bandwidth.

[0075] To efficiently utilize fragmented spectrum, carrier aggregation supports aggregation between different component carriers. For example, the different component carriers may include component carriers of the same or different bandwidths, or adjacent or non-adjacent component carriers within the same frequency band, or component carriers within different frequency bands.

[0076] In addition, in a CA scenario, the cell accessed by the terminal device may include PCell and SCell. The PCell may be determined during connection establishment, and the SCell may be added / modified / released via an RRCConnectionReconfiguration message after the initial security activation procedure.

[0077] A serving cell is a cell that provides services (e.g., 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, the PCell. If the terminal device is in the RRC_CONNECTED state and CA is configured, the terminal device's serving cell set includes the PCell and one or more SCells. In other words, a serving cell can refer to both a PCell and an SCell. A PCell or SCell is also a serving cell.

[0078] (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.

[0079] Specifically, the PRACH is used to transmit the random access preamble (preamble), which is a step in the random access process. The preamble's primary function is to notify the base station of a random access request and enable the base station to estimate the transmission delay between it and the terminal. This allows the base station to calibrate the uplink timing and communicate this calibration information to the terminal via an uplink timing advance command.

[0080] 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 active state (ACTIVE), and can also be applied to a terminal device in a non-connected state (INACTIVE) or an idle state (IDLE).

[0081] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in Figure 1, 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 110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (such as 120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is connected to the RAN node 110 wirelessly, and the RAN node 110 is connected to the core network 200 wirelessly or by wire. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device that integrates the logical functions of the core network equipment and the logical functions of the RAN node. Terminals and RAN nodes may be connected to each other via wired or wireless means.

[0082] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a NR system, or a future radio access system defined in the 3rd Generation Partnership Project (3GPP). RAN100 may also include two or more of the aforementioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0083] A RAN node, also known as a radio access network device, RAN entity, or access node, facilitates wireless access to a communication system by a terminal. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a sixth-generation (6G) mobile communication system, or a base station in a future mobile communication system. A RAN node can be a macro base station (such as 110a in Figure 1), a micro base station, an indoor station (such as 110b in Figure 1), a relay node, or a donor node.

[0084] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing portions of the base station's functions. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU implements the base station's radio resource control protocol and packet data convergence protocol (PDCP) functions, and can also implement the service data adaptation protocol (SDAP) functions; the DU implements the base station's radio link control layer and MAC layer functions, and can also implement some or all of the physical layer functions. For detailed descriptions of each of the above protocol layers, please refer to the relevant technical specifications of 3GPP. The RU can be used to implement the transmission and reception of radio frequency signals. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as in a baseband unit (BBU). The RU can be included in radio frequency equipment, 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.

[0085] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU may be called an open CU (O-CU), a DU may be called an open DU (O-DU), and a RU may be called an open RU (O-RU). The RAN node in the embodiments 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 the corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For ease of description, the following description takes a base station as an example of a RAN node.

[0086] A terminal is a device with wireless transceiver capabilities that can send signals to a base station or receive signals from a base station. A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the terminal.

[0087] Base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0088] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0089] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out 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.

[0090] 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 that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0091] In this application, a base station sends downlink signals or downlink information to a terminal, and the downlink information is carried on a downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on an 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 serving cell of the terminal. When the terminal communicates with the serving cell, it will also be subject to interference from signals in neighboring cells.

[0092] In wireless communication systems (such as the one shown in Figure 1), the demand for wireless data traffic is rapidly increasing with the emergence of new services such as high-definition video and VR / AR. To meet this growing demand for wireless transmission, the deployment of large-scale antennas and transceiver modules that support high-frequency signals can increase the network capacity and transmission rate of wireless communication systems. Consequently, the power consumption of the terminal devices (and / or network devices) that deploy these transceiver modules will increase.

[0093] In addition, another way to improve the network capacity and transmission rate of wireless communication systems can be achieved by further mining the frequency resources of wireless communication. Generally speaking, from the perspective of mining frequency resources, a larger transmission bandwidth can provide a larger network capacity and a higher transmission rate. However, due to the limitations of the actually deployed spectrum bandwidth resources and the processing capabilities 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.

[0094] Figure 2 shows an example implementation of CA. In the CA scenario shown in Figure 2, 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), each of which can provide a cell. In other words, there can be n carriers serving a terminal device, meaning the terminal device has n serving cells. The n serving cells of a terminal device include one PCell and one or more SCells.

[0095] Currently, in the implementation of carrier aggregation technology, cells used for CA all include at least one downlink carrier (i.e., a downlink CC). Taking Figure 3 as an example, one implementation of a cell used for CA, shown as cell 1, includes a downlink CC but no uplink CC. Another implementation of a cell used for CA, shown as cell 2, includes a downlink CC and an uplink CC. Another implementation of a cell used for CA, shown as cell 3, includes a downlink CC, an uplink CC, and another uplink CC (which may be referred to as a supplementary uplink CC). However, in the current implementation of CA technology, each cell must configure / use a downlink carrier so that a terminal device can obtain downlink synchronization and downlink channel quality information for the cell through the downlink carrier. This allows the terminal device to obtain relevant information related to accessing the cell (such as cell time-frequency synchronization, the cell's uplink channel transmit power, and the cell's RRM) to obtain network services provided by the cell. This configuration / use of downlink carriers inevitably increases the power consumption of the terminal device (and / or) network equipment.

[0096] In summary, increasing the network capacity and transmission rate of wireless communication systems, whether through the deployment of large-scale antennas and transceiver modules supporting high-frequency signals or through CA technology, inevitably leads to increased power consumption in terminal devices (and / or network equipment). Therefore, reducing the power consumption of terminal devices is a pressing technical issue.

[0097] 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.

[0098] Please refer to FIG4 , which is a schematic diagram of an implementation of the uplink transmission method provided in the present application. The method includes the following steps.

[0099] It should be noted that, in FIG4 , the method is illustrated by taking the terminal device and the first network device as the execution subjects of the interaction diagram as an example, but the present application does not limit the execution subjects of the interaction diagram. For example, the execution subject of S401-S402 in FIG4 and the corresponding implementation is the terminal device, and the execution subject may 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 implement all or part of the functions of the terminal device. The first network device in S401-S402 in FIG4 and the corresponding implementation may also be replaced by a chip, chip system, or processor that supports the first network device to implement the method, or a logic module or software that can implement all or part of the functions of the first network device. Similarly, in the method shown in FIG6 below, the execution subject may be a terminal device, a first network device, a second network device, or other devices, or a chip, chip system, or processor that implements the method, or a logic module or software that can implement all or part of the functions of the terminal device.

[0100] 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.

[0101] 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 the network device for sending or receiving signals can be called a cell, and the terminal device located within the cell range 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. In the technical solution shown in Figure 4, 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.

[0102] In the present application, the first cell is only used for uplink transmission, which can be understood as the first cell being able to communicate based on an uplink carrier but not based on a downlink carrier. Accordingly, the first cell being only used for uplink transmission can be replaced with the first cell having only an uplink carrier available, the uplink carrier of the first cell being available and the downlink carrier of the first cell being unavailable, the downlink carrier of the first cell being unavailable, the carrier of the first cell being an uplink carrier, the first cell only including an uplink carrier, the carrier of the first cell including an uplink carrier and not including a downlink carrier, the uplink transmission of the first cell being activated, turned on, enabled or enabled, and the downlink transmission of the first cell being deactivated, turned off, dormant, silent, prohibited or disabled. Similarly, a cell (such as the second cell mentioned later) is at least used for downlink transmission, which can be understood as the cell being able to communicate based on at least a downlink carrier, and optionally, the cell being able to communicate based on an uplink carrier. Accordingly, the cell being at least used for downlink transmission can be replaced with the cell having at least an uplink carrier available, the cell having a downlink carrier available, the cell having at least a downlink carrier, and the cell having at least one of downlink transmission activated, turned on, enabled or enabled.

[0103] Optionally, the first cell used only for uplink transmission may be called a UL only cell.

[0104] 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.

[0105] It is understandable that since the first cell is used only for uplink transmission, the configuration information of the first cell may include relevant configuration information of one or more uplink carriers of the first cell, and may not include 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 number of the common 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 number of the common physical resource block 0 associated with the uplink carrier need to be configured.

[0106] In one 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 can be carried in an RRC message, so that the terminal device can obtain the configuration information of the first cell used only for uplink transmission through the RRC connection when the terminal device has an RRC connection with a certain cell (e.g., PCell). 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, thereby reducing overhead and being used for random access.

[0107] Optionally, the configuration information of the first cell may be carried in MAC CE, DCI, etc., or other signaling, which is not limited here.

[0108] As an implementation example, in step S401, the configuration information of the first cell is used to carry the RRC message specific to the terminal device 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 carrier aggregation in the RRC message to carry the configuration information of the first cell, but not configure the configuration information related to the downlink carrier. For another example, the PCell may newly configure a cell in the RRC message, and the newly configured cell is used to carry the configuration information of the cell used only for uplink transmission (i.e., the configuration information of the first cell). For another example, the PCell may reuse the configuration information element of the secondary cell in the carrier aggregation in the RRC message to carry the configuration information of the first cell, and at the same time add downlink unavailable indication information in the configuration information.

[0109] As another implementation example, in step S402, the configuration information of the first cell is carried in the broadcast message of the cell M. For example, the terminal device can access the downlink of the cell M through the blind detection synchronization signal block (synchronization signal / physical broadcast channel block, SSB), and at the same time receive the broadcast information of the cell M. The broadcast message may 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 the cell M. In this case, the terminal device can communicate with the cell M and / or the network device where the first cell is located through carrier aggregation, wherein the cell M may be the PCell of the first cell.

[0110] 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.

[0111] 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.

[0112] For another example, for a terminal device that supports CA of the 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 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 status. 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.

[0113] S402. The first network device sends a first signal of the second cell, and the terminal device receives the first signal of the second cell, wherein the first signal is used to determine at least one of time-frequency synchronization of the first cell, transmit power of an uplink channel of the first cell, and RRM of the first cell.

[0114] 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 shared 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.

[0115] 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 communication between the terminal device and the first cell that only transmits uplink.

[0116] After step S402, 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, which will be described below in combination with some implementation methods.

[0117] 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.

[0118] Implementation method two: after step S402, the terminal device determines the transmission power of the uplink channel of the first cell based on the first signal.

[0119] In implementation method 2, the terminal device can obtain path loss based on the first signal, and this parameter can be used to determine the transmit power of the uplink channel of the first cell. For example, this parameter can be used as one of the parameters for determining the transmit power of uplink channels such as the physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), and physical random access channel (PRACH) of the first cell.

[0120] Implementation method three: after step S402, the terminal device determines the RRM of the first cell based on the first signal.

[0121] 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 (RAT) measurement.

[0122] In implementation method three, after obtaining the measurement results through at least one of the same-frequency cell measurement, different-frequency cell measurement, and different RAT measurement, the network device can update the service cell of the terminal device based on the measurement results, for example, deleting cells with poor signal quality, adding cells with good signal quality, etc. As shown in the implementation example of FIG3 above, the cell management of a certain cell generally needs to be based on the signal reception quality information of the downlink reference signal of the cell as the measurement result. In the implementation process shown in FIG4, since the first cell is only used for downlink transmission, for this reason, the first cell can perform downlink channel measurement using 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 that only transmit uplink.

[0123] In addition, as shown in the implementation example shown in FIG3 above, the cell management (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) of the uplink channels (such as PUCCH, PUSCH, PRACH, etc.) of traditional cells (such as cell 1, cell 2 and cell 3 in FIG3) generally needs to be obtained based on the downlink channel information of the downlink signal. In the implementation process shown in FIG4, since the first cell is only used for downlink transmission, for this reason, the first cell can obtain the downlink channel information by performing downlink channel measurement based on 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. Thus, 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 used only for uplink transmission, so that the terminal device can implement the cell management of the first cell used only for uplink transmission.

[0124] Optionally, in addition to using the first signal of the second cell as the basis for determining the cell management of the first cell (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), 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 a channel sounding reference signal (SRS), a signal carried on PUSCH, a signal carried on PRACH, and a signal carried on PUSCH.

[0125] 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 using three different information elements, or can be configured uniformly, that is, configured using one information element.

[0126] 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 clearly specify 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. 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.

[0127] 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.

[0128] 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 downlink carrier of the at least two downlink carriers, and accordingly, the first indication information may further indicate the downlink carrier.

[0129] Optionally, the terminal device may obtain the second cell through 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 being 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 may obtain the first signal through standard / protocol pre-configuration to save overhead.

[0130] 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 clearly identify the signal used as a reference for downlink synchronization / downlink channel measurement of the first cell only for uplink transmission based on the indication of the network device. 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.

[0131] 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.

[0132] Optionally, the first signal may include SSB, channel state information reference signal (CSI-RS) or other signals, which are not limited here.

[0133] 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, and 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 the second cell used for downlink transmission and the 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. Exemplarily, as shown in FIG5 , the terminal device can communicate with the network device through the PCell (for example, the PCell can be the second cell) and the SCell (for example, the SCell can be the first cell) in a CA manner, wherein the PCell includes a downlink CC and an uplink CC, and the SCell is only used for uplink transmission, that is, the SCell includes an uplink CC (but not a downlink CC).

[0134] In one possible implementation, before step S401, the method further includes: the terminal device sending third indication information, the third indication information indicating the first frequency band, wherein the first frequency band supports the cell configuration for uplink transmission only. Specifically, the terminal device may further send third indication information indicating the first frequency band, wherein the first frequency band supports the cell configuration for uplink transmission only, so that the first network device can learn the frequency band that the terminal device supports uplink transmission only based on the third indication information, so that the first network device can configure a cell for uplink transmission only on the frequency band supported by the terminal device.

[0135] 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).

[0136] Optionally, the second frequency band supports cell configuration for downlink transmission.

[0137] 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.

[0138] 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 for uplink transmission only in a 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 used only for uplink transmission is recorded as a UL only cell, and the other cells are recorded as associated cells.

[0139] In one implementation example, a new frequency band combination may be preconfigured or predefined, where the frequency band combination includes the frequency band of the UL-only cell and the frequency band of the associated cell. For example, if the combination n1-UL-n2 is predefined, then the UL-only cell of frequency band n2 may be associated with the cell of frequency band n1. Based on the predefined frequency band combination, the terminal device may report the frequency band combination supported by the terminal device in the third indication information, so that the network device may configure the first cell and the other cells according to the capabilities of the terminal device.

[0140] 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 supporting carrier aggregation can be associated with each other between 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 believes 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 believes 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.

[0141] In another implementation example, when the terminal device reports the frequency band combination of carrier aggregation, it also displays whether the frequency bands in the frequency band combination support 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 whether the downlink feature set is configured. 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 considers 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 considers that the terminal device bands 3 and 4 only support UL only cell configuration.

[0142] In another implementation example, when the terminal device reuses the 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 UL only), band 3 (supports DL+UL)}, indicating that the UL only cell of band 1 can be managed to the cells corresponding to band 2 and band 3. Optionally, the terminal device can report a set {band 1, band 2, band 3, band 4}, and the frequency bands that support UL only cell configuration in the set can be associated with any frequency band that supports DL+UL cell configuration.

[0143] In the scheme shown in Figure 4, after the terminal device determines at least one of the time-frequency synchronization of the first cell, the transmit 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 this communication process, the terminal device can send at least one of the following information:

[0144] Information carried on the uplink shared channel (UL-SCH);

[0145] Information carried on the RACH (for example, if a random access channel opportunity (RACH assion) is configured, the terminal device can send uplink information on the RACH);

[0146] Information carried on the PUCCH (for example, if the PUCCH is configured, the terminal device can send uplink information on the PUCCH);

[0147] SRS (eg, if SRS is configured, the terminal device may transmit SRS).

[0148] Optionally, at least one item of information sent by the terminal device may be sent via an uplink bandwidth part (BWP). The uplink BWP may be configured to the terminal device via an RRC message (e.g., configuration information of the first cell carried in the RRC message), and the uplink BWP may be a continuous physical resource block in the frequency domain.

[0149] Optionally, in order to achieve better energy-saving effects 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).

[0150] Optionally, the energy-saving BWP may be referred to as an uplink default BWP.

[0151] Based on the technical solution shown in Figure 4, the first cell is used only 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 used only 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] 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 signals of other cells as a 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.

[0153] In addition, in the implementation example shown in Figure 3 above, the cell and the downlink carrier have a strong binding relationship, and this restriction is suitable for downlink services with large data volumes. For uplink services with large data volumes or for service scenarios that require auxiliary 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. In the technical solution shown in Figure 4, 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.

[0154] In the scheme shown in FIG4 , 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 by 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 contained in the network device itself and used only for uplink transmission 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 contained in other network devices and used only for uplink transmission in step S401. For example, a cell in the first network device can be the PCell of the first cell, or the first network device can be the relay device of the other network device, etc. Moreover, in the scheme shown in FIG4 , the one or more cells in the first network device may include the second cell, so that the first network device can send the first signal of the cell contained in the network device itself in step S402.

[0155] In one 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 (e.g., the second network device). In this case, the first signal received by the terminal device in step S402 may no longer be received through the first network device. This situation will be described below with reference to the implementation process shown in FIG6 .

[0156] 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.

[0157] It should be noted that the implementation process of step S601 can refer to the implementation process of the aforementioned step S401 and achieve corresponding technical effects, which will not be repeated here.

[0158] S602. The second network device sends a first signal of the second cell, and the terminal device receives the first signal of the second cell, wherein the first signal is used to determine at least one of time-frequency synchronization of the first cell, transmit power of an uplink channel of the first cell, and RRM of the first cell.

[0159] 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, with the difference being that in step S602, the first signal is sent via the second network device, while in step S402, the first signal is sent via the first network device. That is, in the implementation process shown in Figure 4, the second cell is located on the first network device; while in the implementation process shown in Figure 6, the second cell is located on the second network device.

[0160] In one possible implementation, the method shown in FIG6 further includes: the second network device receiving third indication information, the third indication information indicating a first frequency band, wherein the first frequency band supports a cell configuration for uplink-only transmission. Specifically, the terminal device may further send third indication information indicating the first frequency band, wherein the first frequency band supports a cell configuration for uplink-only transmission, so that the second network device can learn, based on the third indication information, that the terminal device supports a frequency band for uplink-only transmission.

[0161] 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.

[0162] It should be noted that the implementation process of the third indication information can also refer to the description of the implementation solution shown in Figure 4, which will not be repeated here.

[0163] Based on the technical solution shown in Figure 6, 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, 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, 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 changes in 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.

[0164] Referring to Figure 7, an 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 within the communication device, such as a chip. The following embodiments are described using the communication device 700 as an example.

[0165] In one possible implementation, when the device 700 is used to execute the method executed by the terminal device in any of the aforementioned 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, which 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.

[0166] 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; and the transceiver unit 702 is used to send the configuration information of the first cell.

[0167] In one 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 the 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.

[0168] It should be noted that, for details on the information execution process of the units of the above-mentioned communication device 700, please refer to the description in the method embodiment shown above in this application, and no further details will be given here.

[0169] Please refer to Figure 8, which is another schematic structural diagram of a communication device 800 provided in this application. Communication device 800 includes a logic circuit 801 and an input / output interface 802. Communication device 800 may be a chip or an integrated circuit. The transceiver unit 702 shown in Figure 7 may be a communication interface, which may be the input / output interface 802 in Figure 8. The input / output interface 802 may include an input interface and an output interface. Alternatively, the communication interface may be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0170] Optionally, the input-output interface 802 is used to determine that the transceiver unit is used to receive configuration information of the first cell, and the first cell is only used for uplink transmission; the input-output interface 802 is also used to receive the first signal of the second cell; the logic circuit 801 is used to 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.

[0171] Optionally, the logic circuit 801 is used to determine configuration information of a first cell, where the first cell is used only for uplink transmission; and the input / output interface 802 is used to send the configuration information of the first cell.

[0172] Optionally, the logic circuit 801 is used to determine the first signal of the second cell, which 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 input and output interface 802 is used to send the first signal.

[0173] The logic circuit 801 and the input / output interface 802 may 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 described in detail here.

[0174] In a possible implementation, the processing unit 701 shown in FIG. 7 may be the logic circuit 801 in FIG. 8 .

[0175] Optionally, the logic circuit 801 may be a processing device, and the functions of the processing device may be partially or entirely implemented by software. The functions of the processing device may be partially or entirely implemented by software.

[0176] 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.

[0177] Alternatively, the processing device may include only a processor. A memory for storing the computer program is located outside the processing device, and the processor is connected to the memory via circuits / wires to read and execute the computer program stored in the memory. The memory and processor may be integrated or physically separate.

[0178] Optionally, the processing device may be one or more chips, or one or more processors.

[0179] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be 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.

[0180] 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.

[0181] 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.

[0182] An 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 to 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.

[0183] 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.

[0184] In the several embodiments provided in this 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 merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0185] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0186] 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.

[0187] 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. When the terminal chip receives information from the base station, it can be understood that the information is first received by other modules in the terminal (such as a radio frequency module or antenna) and then sent to the terminal chip by these modules. When the terminal chip sends information to the base station, it can be understood that the information is first sent to other modules in the terminal (such as a radio frequency module or antenna) and then sent to the base station by these modules.

[0188] When the above-mentioned communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the above-mentioned method embodiment. When the base station chip receives information from the terminal, it can be understood that the information is first received by other modules in the base station (such as a radio frequency module or antenna) and then sent to the base station chip by these modules. When the base station chip sends information to the terminal, it can be understood that the information is sent to other modules in the base station (such as a radio frequency module or antenna) and then sent to the terminal by these modules.

[0189] 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, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well 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 an integral part of the processor. The processor and 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 storage medium can also exist in a base station or a terminal as discrete components.

[0190] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented 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 instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed 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 instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0191] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0192] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent 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, transmission 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.

Images