Communication method and apparatus

Abstract

The application provides a communication method and device, the method comprises the following steps: receiving high layer signaling, the high layer signaling comprises a first parameter set and a second parameter set, the first parameter set corresponds to a first transmission mode of a terminal device, the second parameter set corresponds to a second transmission mode of the terminal device, the first transmission mode is an uplink single transmission mode, and the second transmission mode is an uplink concurrent transmission mode; receiving indication information, the indication information is used for indicating the first transmission mode or the second transmission mode, or the indication information is used for indicating that the terminal device switches from the first transmission mode to the second transmission mode or switches from the second transmission mode to the first transmission mode. The terminal device supports an antenna sharing capability. The communication method provided by the application can make the terminal device work in the uplink single transmission mode and the uplink concurrent transmission mode in time division, thereby improving the communication efficiency of the terminal device and the network device which need to switch the transmission mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication, and more particularly, to a communication method and apparatus. BACKGROUND

[0002] A dual connectivity (DC) communication system can deploy network devices supporting different radio access technologies (RATs). A terminal device supporting DC can access network devices of different RATs simultaneously. For example, in a dual connectivity communication system, network devices of new radio (NR) and long term evolution (LTE) can be deployed simultaneously, and a terminal device can support accessing network devices of LTE and network devices of NR simultaneously. For example, a typical transmit antenna architecture of a terminal device supporting DC is one NR dedicated transmit antenna plus one LTE / NR shared transmit antenna. The shared transmit antenna can satisfy the uplink transmission requirements of NR and LTE at different times by switching the operating frequency. Such a terminal device is referred to as a terminal device with antenna sharing capability hereinafter.

[0003] In a dual connectivity communication system, a terminal device with antenna sharing capability supports two transmission modes, one is single uplink operation (SUO), and the other is uplink concurrent operation (or can be referred to as dual Tx, dual transmission mode). The uplink concurrent operation can also be referred to as non-SUO. The single uplink operation can be understood as that the terminal device can communicate with a network device using only one radio access technology (for example, NR or LTE) at a time. The uplink concurrent operation can be understood as that the terminal device can communicate with a network device using multiple radio access technologies (for example, NR and LTE) simultaneously at a time.

[0004] Currently, a network device can configure RRC parameters used in one of the transmission modes of the single uplink operation or the uplink concurrent operation for a terminal device through radio resource control (RRC) signaling. After successfully receiving the RRC parameters, the terminal device communicates with the network device using the transmission mode corresponding to the RRC parameters. During the maintenance of the RRC connection between the terminal device and the network device, the transmission mode of the terminal device remains unchanged.

[0005] However, the current mode can reduce the efficiency of uplink services and affect user experience. SUMMARY

[0006] The application provides a communication method and device, which can improve communication efficiency.

[0007] In a first aspect, a communication method is provided. The execution subject of the method can be a terminal device or a chip applied to the terminal device. The terminal device has an antenna sharing capability. Taking the terminal device as an example, the method comprises: receiving high-layer signaling by the terminal device, wherein the high-layer signaling comprises a first parameter set and a second parameter set, the first parameter set corresponds to a first transmission mode of the terminal device, and the second parameter set corresponds to a second transmission mode of the terminal device; the first transmission mode is an uplink single transmission mode, and the second transmission mode is an uplink concurrent transmission mode; and receiving indication information by the terminal device, wherein the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to indicate that the terminal device switches the transmission mode, wherein the switching of the transmission mode comprises switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. The uplink single transmission mode can be understood as that the terminal device can communicate with a network device by using only one radio access technology (for example, NR or LTE) in a certain time period. The uplink concurrent transmission mode can be understood as that the terminal device can communicate with the network device by using multiple radio access technologies (for example, NR and LTE) in a certain time period.

[0008] In a second aspect, a communication method is provided. The execution subject of the method can be a network device or a chip applied to the network device. The method comprises: sending high-layer signaling, wherein the high-layer signaling comprises a first parameter set and a second parameter set, the first parameter set corresponds to a first transmission mode of a terminal device, and the second parameter set corresponds to a second transmission mode of the terminal device; and sending indication information, wherein the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to indicate that the terminal device switches the transmission mode, wherein the switching of the transmission mode comprises switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode.

[0009] In the communication method, the network device pre-configures a parameter set corresponding to the uplink single-transmission mode and the uplink concurrent-transmission mode for the terminal device, and indicates the switching between the two transmission modes or one of the transmission modes through the indication information. The terminal device communicates with the network device by using the transmission mode indicated by the indication information and the corresponding parameter set, without reconfiguring the parameter set corresponding to the current transmission mode through high-layer signaling, thereby reducing the time delay required for switching the transmission mode, and improving the efficiency of communication between the terminal device and the network device that needs to switch the transmission mode, for example, the scenario in which the terminal device is moving and the distance changes to cause the terminal device to switch the transmission mode. Further, the above scheme further solves the problem that the actual uplink antenna working state of the terminal device may not match the expected uplink antenna working state of the terminal device of the network device during the transmission delay of reconfiguring the new parameter set through high-layer signaling, thereby causing the quality of service to decrease. In summary, the above scheme improves the communication efficiency.

[0010] In a possible implementation manner, the antenna architecture of the terminal device can include at least one dedicated antenna and at least one shared antenna. The dedicated antenna can be an NR dedicated antenna or an LTE dedicated antenna, and each of the at least one shared antenna can be switched on two carriers (carrier frequencies). At least one antenna of the terminal device can be switched on two carriers. The two carriers can be both NR carriers, or both LTE carriers, or one is an NR carrier and the other is an LTE carrier. That is, the terminal device supports an antenna sharing capability. For example, the terminal device can be a terminal device supporting EN-DC, a terminal device supporting MR-DC, a terminal device supporting NE-DC, a terminal device supporting SUL, or a terminal device supporting UL-CA.

[0011] In a possible implementation manner, the terminal device receives the indication information, including: the terminal device receives a downlink control information DCI, and correspondingly, the network device sends the DCI. The DCI includes the indication information. In this implementation manner, the DCI is used to send the indication information, which can ensure that the terminal device quickly and accurately switches the transmission mode, improve the efficiency of switching the transmission mode of the terminal device, and facilitate the network device to more flexibly and efficiently schedule.

[0012] In a possible implementation, the indication information is a first radio network temporary identifier (RNTI), and the DCI sent by the network device is scrambled by the first RNTI, where the first RNTI is used to instruct the terminal device to switch the transmission mode. In this implementation, the DCI is scrambled by the dedicated first RNTI, and the dedicated first RNTI is used to instruct the terminal device to switch the transmission mode. This facilitates implementation, is low in complexity, and improves the efficiency and accuracy of instructing the terminal device to switch the transmission mode.

[0013] In a possible implementation, the indication information is a second radio network temporary identifier (RNTI) or a third RNTI, and the DCI sent by the network device is scrambled by the second RNTI or the third RNTI,

[0014] where the second RNTI is used to instruct the terminal device to perform transmission in the first transmission mode, and the third RNTI is used to instruct the terminal device to perform transmission in the second transmission mode. In this implementation, the DCI is scrambled by different RNTIs, and different RNTIs correspond to different transmission modes, which are used to instruct the terminal device to adopt different transmission modes. This improves the efficiency and accuracy of instructing the terminal device to adopt different transmission modes, and facilitates implementation.

[0015] In a possible implementation, the DCI includes a first field, the first field includes the indication information, a first state of the indication information is used to instruct the terminal device to perform transmission in the first transmission mode, and a second state of the indication information is used to instruct the terminal device to perform transmission in the second transmission mode; or the indication information is used to instruct the terminal device to switch the transmission mode. In this implementation, the DCI includes the first field, the first field includes the indication information, different states of the indication information are used to instruct the terminal device to adopt different transmission modes for transmission, or the indication information is used to instruct the terminal device to switch the transmission mode. This is easy to implement, is low in complexity, and improves the efficiency and accuracy of instructing the terminal device to adopt different transmission modes and switch the transmission mode.

[0016] In a possible implementation, the first field is a 1-bit length field.

[0017] In a possible implementation, the terminal device receives indication information, including: the terminal device receives a medium access control element (MAC CE), and the network device sends the MAC CE. The MAC CE includes the indication information. In this implementation, the time length of the ambiguous period of the terminal device switching the transmission mode is shortened, thereby shortening the time length required for the indication information to take effect, ensuring that the terminal device can quickly and accurately complete the switching of the transmission mode, and improving the efficiency of the switching of the transmission mode of the terminal device. This also facilitates the network device to schedule more flexibly and efficiently, and can effectively improve the efficiency of the uplink service.

[0018] In a possible implementation, the indication information in the MAC CE is one or more parameters included in the first parameter set, or one or more parameters included in the second parameter set. When the indication information is the one or more parameters included in the first parameter set, the indication information is used to instruct the terminal device to perform transmission in the first transmission mode corresponding to the first parameter set. When the indication information is the one or more parameters included in the second parameter set, the indication information is used to instruct the terminal device to perform transmission in the second transmission mode corresponding to the second parameter set. In this implementation, it is easy to implement, has low complexity, and improves the efficiency and accuracy of instructing the terminal device to use different transmission modes and to switch the transmission mode.

[0019] In a possible implementation, the indication information in the MAC CE can also be activation information of one or more parameters included in the first parameter set or activation information of one or more parameters included in the second parameter set, and is used to instruct the terminal device to activate the first parameter set or the second parameter set and perform transmission in the first transmission mode or the second transmission mode.

[0020] In a possible implementation, the MAC CE includes a second field, the second field includes the indication information, a first state of the indication information is used to instruct the terminal device to perform transmission in the first transmission mode, and a second state of the indication information is used to instruct the terminal device to perform transmission in the second transmission mode; or the indication information is used to instruct the terminal device to switch the transmission mode. In this implementation, it is easy to implement, has low complexity, and improves the efficiency and accuracy of instructing the terminal device to use different transmission modes and to switch the transmission mode.

[0021] In a possible implementation manner, the terminal device receives indication information, including: the terminal device receives RRC reconfiguration information, and correspondingly, the network device sends the RRC reconfiguration information. The RRC reconfiguration information includes the indication information. The indication information is one or more parameters included in the first parameter set or one or more parameters included in the second parameter set. When the indication information is one or more parameters included in the first parameter set, the indication information is used to instruct the terminal device to use the first transmission mode corresponding to the first parameter set for transmission. When the indication information is one or more parameters included in the second parameter set, the indication information is used to instruct the terminal device to use the second transmission mode corresponding to the second parameter set for transmission.

[0022] In a possible implementation manner of the first aspect, the method further includes: the terminal device determines a parameter set corresponding to the transmission mode indicated by the indication information; when the indication information indicates switching the transmission mode from the first transmission mode to the second transmission mode, or the indication information instructs the terminal device to use the second transmission mode for transmission, the terminal device uses the parameters included in the second parameter set to use the second transmission mode for transmission.

[0023] Or, when the indication information indicates switching the transmission mode from the second transmission mode to the first transmission mode, or the indication information instructs the terminal device to use the first transmission mode for transmission, the terminal device uses the parameters included in the first parameter set to use the first transmission mode for transmission.

[0024] In a possible implementation manner, the first parameter set includes at least one of a maximum transmission power used by the first transmission mode, an uplink reference signal related parameter used by the first transmission mode, a physical uplink shared channel related parameter used by the first transmission mode, or a physical uplink control channel spatial relation parameter used by the first transmission mode. The second parameter set includes at least one of a maximum transmission power used by the second transmission mode, an uplink reference signal related parameter used by the second transmission mode, a physical uplink shared channel related parameter used by the second transmission mode, or a physical uplink control channel spatial relation parameter used by the second transmission mode.

[0025] In a possible implementation manner, the uplink single-shot mode is an uplink NR multi-antenna single-shot mode, and the uplink concurrent mode is an uplink NR single-antenna and uplink LTE single-antenna parallel sending mode.

[0026] In a possible implementation manner, the terminal device further receives high-layer signaling sent by the network device, and correspondingly, the network device sends the high-layer signaling. The high-layer signaling comprises (or is used for configuring) an initial working state or an initial transmission mode of the terminal device. The high-layer signaling used for configuring the initial working state or the initial transmission mode and the high-layer signaling used for configuring the first parameter set and the second parameter set in the foregoing can be the same high-layer signaling or different high-layer signaling. The different high-layer signaling can be different types of high-layer signaling or the same type of high-layer signaling.

[0027] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0028] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0029] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0030] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0031] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0032] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0033] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0034] In a possible implementation manner of the first aspect, the terminal device works in a default working state (or transmission mode). Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0035] In a tenth aspect, a network device is provided, which includes the communication apparatus provided in the fourth aspect, or the terminal device includes the communication apparatus provided in the sixth aspect, or the terminal device includes the communication apparatus provided in the eighth aspect.

[0036] In an eleventh aspect, a computer program product is provided, which includes a computer program configured to perform the method in the first aspect or any possible implementation of the method in the first aspect, or perform the method in the second aspect or any possible implementation of the method in the second aspect, when executed by a processor.

[0037] In a twelfth aspect, a computer-readable storage medium is provided, which stores a computer program configured to perform the method in the first aspect or any possible implementation of the method in the first aspect, or perform the method in the second aspect or any possible implementation of the method in the second aspect, when executed by a processor.

[0038] In a thirteenth aspect, a communication system is provided, which includes the terminal device and the network device.

[0039] In a fourteenth aspect, a chip is provided, which includes a processor configured to invoke and run a computer program from a memory, so that a communication device installed with the chip performs the method in the first aspect or any possible implementation of the method in the first aspect, or performs the method in the second aspect or any possible implementation of the method in the second aspect.

[0040] In the communication method provided by the embodiments of the present application, the network device configures the terminal device with a parameter set corresponding to each of the uplink single-transmission mode and the uplink concurrent-transmission mode, and indicates the terminal device to switch between the two transmission modes or indicates one of the transmission modes through indication information. The terminal device communicates with the network device by using the transmission mode indicated by the indication information and the corresponding parameter set, without reconfiguring the parameter set corresponding to the current transmission mode through high-layer signaling, thereby reducing the time delay required for switching the transmission mode, and improving the efficiency of communication between the terminal device and the network device, for example, in a scenario where the terminal device is moving and the distance between the terminal device and the network device changes, thereby requiring switching of the transmission mode. Further, since the transmission delay is large when the high-layer signaling reconfigures a new parameter set, the actual uplink antenna working state of the terminal device may not match the expected uplink antenna working state of the terminal device in the network device during this period. The embodiments of the present application can reduce the time delay for switching the transmission mode by sending the indication information through the DCI, thereby improving the service quality. In summary, the communication method provided by the embodiments of the present application can improve the communication efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a schematic diagram of terminal device position movement.

[0042] Figure 2 is an example of a mobile communication system architecture suitable for embodiments of the application.

[0043] Figure 3 is a schematic interaction diagram of an example of a communication method provided by embodiments of the application.

[0044] Figure 4 is a schematic interaction diagram of another example of a communication method provided by embodiments of the application.

[0045] Figure 5 is a schematic interaction diagram of another example of a communication method provided by embodiments of the application.

[0046] Figure 6 is a schematic diagram of a format of a MAC CE provided by embodiments of the application.

[0047] Figure 7 is a schematic block diagram of a communication apparatus provided by embodiments of the application.

[0048] Figure 8 is a schematic block diagram of another example apparatus provided by embodiments of the application.

[0049] Figure 9 is a schematic block diagram of yet another example communication apparatus provided by embodiments of the application.

[0050] Figure 10 is a schematic block diagram of another example communication apparatus provided by embodiments of the application.

[0051] Figure 11 is a schematic block diagram of a terminal device provided by embodiments of the application.

[0052] Figure 12 is a schematic block diagram of another example terminal device provided by embodiments of the application.

[0053] Figure 13 is a schematic block diagram of a network device provided by embodiments of the application. DETAILED DESCRIPTION

[0054] The technical solutions in the application will be described below with reference to the accompanying drawings.

[0055] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a future 5th Generation (5G) system or a New Radio (NR), and the like.

[0056] The terminal device in the embodiments of the present application can refer to a user equipment, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited in the embodiments of the present application.

[0057] The network device in the embodiments of the present application can be a device for communicating with the terminal device, which can be a base station (BTS) in a Global System of Mobile communication (GSM) system or a Code Division Multiple Access (CDMA) system, can be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, can be an evolved NodeB (eNB or eNodeB) in an LTE system, can be a wireless controller in a cloud radio access network (CRAN) scenario, or can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, and the like, which are not limited in the embodiments of the present application.

[0058] In the embodiments of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes a central processing unit (CPU), a memory management unit (MMU), a memory (also referred to as a main memory), and the like. The operating system can be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system, and the like. The application layer includes a browser, an address book, word processing software, instant messaging software, and the like. Moreover, the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application, as long as the execution subject can communicate according to the method provided by the embodiments of the present application by running a program in which the code of the method provided by the embodiments of the present application is recorded, for example, the execution subject of the method provided by the embodiments of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute a program.

[0059] Moreover, various aspects or features of the disclosure can be implemented as a method, apparatus, or article of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used in the disclosure is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., compact disk (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, card, stick, or key drive, etc.). Additionally, various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine- readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction(s) and / or data.

[0060] In a dual connectivity communication system, two network devices supporting different radio access technologies are deployed, and a terminal device in the dual connectivity communication system supports accessing the two different network devices simultaneously. This access manner of the terminal device can be referred to as a multiple radio access technology dual connectivity (MR-DC) access manner.

[0061] For example, in the dual connectivity communication system, a network device of NR and a network device of LTE can be deployed simultaneously, and the terminal device supports accessing the network device of LTE and the network device of NR simultaneously, and this access manner is referred to as evolved universal terrestrial radio access (E-UTRA) and NR dual connectivity (EN-DC).

[0062] Further, the network device of NR and the network device of LTE can also be integrated in one network device.

[0063] For a terminal device supporting EN-DC, for example, a typical transmit antenna architecture thereof is one NR dedicated transmit antenna plus one LTE / NR shared transmit antenna. The shared antenna can meet the uplink transmission requirements of NR and LTE at different times by switching the operating frequency. The terminal device has two NR-side transmission modes, that is, single antenna and dual antenna transmission modes.

[0064] The single antenna transmission mode is to transmit information or data only by using the NR dedicated antenna. The single antenna transmission mode can also be referred to as 1Tx+1Tx, where Tx represents a physical antenna port of the terminal device, the first 1Tx represents that one antenna (or 1 physical antenna port) is used for LTE transmission, or the number of antennas (or the number of physical antenna ports) used for LTE transmission is 1. The second 1Tx represents that one antenna (or 1 physical antenna port) is used for NR transmission, or the number of antennas (or the number of physical antenna ports) used for NR transmission is 1.

[0065] The dual antenna transmission mode is to transmit information or data by using the NR dedicated antenna and the NR mode of the shared antenna (or can also be referred to as the shared antenna as the NR antenna). The dual antenna transmission mode can also be referred to as 0Tx+2Tx, where Tx represents a physical antenna port of the terminal device, 0Tx represents that no antenna (or physical antenna port) is used for LTE transmission, or the number of antennas (or the number of physical antenna ports) used for LTE transmission is 0. 2Tx represents that two antennas (or 2 physical antenna ports) are used for NR transmission, or the number of antennas (or the number of physical antenna ports) used for NR transmission is 2.

[0066] That is, the terminal device has two working states in the NR mode, one is a single antenna working state, and the other is a dual antenna working state. When the terminal device establishes a radio resource control (RRC) connection with a serving cell, the network device will issue relevant parameters required by the single antenna working state or the dual antenna working state to the terminal device through RRC signaling according to the demand, to specify that the terminal device works in the single antenna transmission mode or the dual antenna transmission mode in the NR side. After determining a certain transmission mode, the transmission mode remains unchanged when the terminal device and the network device maintain the RRC connection.

[0067] In the dual connectivity communication system, the terminal device with antenna sharing capability supports two transmission modes, one is a single uplink operation (SUO) mode, and the other is an uplink concurrent mode (dual Tx). The uplink concurrent mode can also be referred to as a non-SUO mode.

[0068] The uplink single-shot mode can be understood as that the terminal device can only use one radio access technology (e.g., NR or LTE) to communicate with the network device in a certain time period. For example, for the NR side of the terminal device of EN-DC, the uplink single-shot mode can specifically be that the terminal device transmits information or data by using the NR mode of the NR dedicated antenna and the shared antenna (or can also be called as the shared antenna for the NR antenna), that is, by using the dual-antenna transmission mode. This uplink single-shot mode can also be called as the uplink NR multi-antenna single-shot mode.

[0069] The uplink concurrent mode can be understood as that the terminal device uses multiple radio access technologies (e.g., NR and LTE) to communicate with the network device in a certain time. For example, for the NR side of the terminal device of EN-DC, the uplink concurrent mode can specifically be that the terminal device only transmits information or data by using the NR dedicated antenna, and at the same time, can also transmit information or data by using the LTE access mode of the shared antenna. This uplink concurrent mode can also be called as the uplink NR single-antenna concurrent mode.

[0070] It should be understood that the above-mentioned uplink concurrent mode and uplink single-shot mode have nothing to do with the number of antennas used by the terminal device when the terminal device respectively adopts the uplink single-shot mode and the uplink concurrent mode, but are only related to the number of radio access technologies used by the terminal device at the same time. The uplink concurrent mode can also be called as the uplink parallel transmission mode.

[0071] For example, for a certain EN-DC terminal device, after searching for a certain service cell, random access is performed. After successfully establishing an RRC connection, if the network device decides that the terminal device needs to work in the SUO mode (e.g., the dual-antenna working state of the NR side), the network device will issue the RRC parameters necessary for the dual-antenna working state to the terminal device through RRC signaling. After successfully receiving these parameters, the terminal device saves the configured dual-antenna parameters, and replies an acknowledgement message to the network device, and the network device considers that the terminal device works in the dual-antenna state after receiving the acknowledgement message. During the maintenance of the RRC connection between the terminal device and the network device, the working state of the terminal device remains unchanged in the dual-antenna working state, that is, remains in the SUO mode.

[0072] However, the terminal device is usually in a mobile state. Figure 1 The terminal device position moves is shown in the schematic diagram. As Figure 1As shown, when the terminal device is located at the cell edge, for example, in Region A, the signal transmission suffers a larger path loss than when the terminal device is located at the cell center, and the network device can expect the terminal device to work in the dual-antenna transmission mode (i.e., the SUO mode), so that the terminal device can use doubled transmission power compared with the single-antenna transmission mode to improve the NR-side uplink throughput. When the terminal device moves to the cell center, for example, in Region B, in order to save energy and reduce interference between adjacent terminal devices, the network device can expect the terminal device to work in the single-antenna transmission (i.e., the non-SUO mode).

[0073] Currently, the network device uses the RRC configuration mechanism to enable the EN-DC terminal device to obtain the required configuration parameters and work in the expected transmission mode. However, because the system parameters used by the terminal device are different in different transmission modes, a single RRC configuration cannot support the terminal device to switch between different transmission modes, such as switching from the SUO mode to the non-SUO mode, or switching from the non-SUO mode to the SUO mode, which undoubtedly reduces the efficiency of uplink services. In addition, RRC configuration rewrites all the high-layer parameters of the terminal device. Considering that the parameters involved in switching the transmission mode are relatively small, the efficiency of RRC configuration is low. Moreover, the time point at which the RRC configuration takes effect is not explicitly specified, and only a relatively long effective time period is specified. During this period, the working state of the terminal device is ambiguous to the network device. If the network device schedules the terminal device according to the new working state during this period, it will inevitably bear the risk that the scheduling cannot take effect. In addition, the long effective time will also affect the LTE and NR-side services. This seriously affects the communication efficiency.

[0074] Therefore, the present application provides a communication method. The parameters corresponding to the uplink single-transmission mode and the uplink concurrent transmission mode are preconfigured, and the terminal device is instructed to switch between the two transmission modes by indication information, and the corresponding parameters are activated. The high-layer signaling is not needed to reconfigure the parameter set corresponding to the current transmission mode, the time delay required for switching the transmission mode is reduced, and the efficiency of the communication between the terminal device and the network device that needs to switch the transmission mode is improved.

[0075] To facilitate understanding of the embodiments of the present application, first, the communication system applicable to the embodiments of the present application is briefly introduced. Figure 2 The communication system applicable to the embodiments of the present application is briefly introduced.

[0076] Figure 2 is a schematic diagram of the communication system 100 applicable to the embodiments of the present application. As shown in Figure 2 , the communication system 100 can include one or more network devices (network device 110 and network device 120 are shown in Figure 1 ) and at least one terminal device (terminal device 120 is shown in Figure 1The terminal device 130 is shown in FIG. 1.

[0077] In the communication system 100, the network device 110 supports a first wireless access technology, for example, LTE, and the network device 120 supports a second wireless access technology, for example, NR. In the case of simultaneous deployment of the two wireless access technologies, the terminal device 130 supports simultaneous access to the network device 110 and the network device 120. The terminal device 130 can perform uplink / downlink communication with the network device 110 on a first carrier, perform uplink / downlink communication with the network device 120 on a second carrier, and perform uplink / downlink communication with the network device 110 and the network device 120 simultaneously.

[0078] The transmit antenna architecture of the terminal device 130 can be at least one NR dedicated transmit antenna plus at least one LTE / NR shared transmit antenna. The terminal device 130 can support an antenna sharing capability. In addition, the terminal device 130 supports an SUO transmission mode and an uplink concurrent transmission mode. For example, for the NR side of the terminal device, the terminal device 130 supports an uplink NR single antenna transmission mode (uplink concurrent transmission mode) and an uplink NR multi-antenna transmission mode (SUO transmission mode). The terminal device 130 can switch between the SUO transmission mode and the uplink concurrent transmission mode.

[0079] It should be noted that, for the purpose of understanding, Figure 2 The communication system 100 shown in FIG. 1 only schematically shows two network devices (the network device 110 and the network device 120) supporting different wireless access technologies and a terminal device (the terminal device 130) supporting the two wireless access technologies, but this should not constitute any limitation on the present application. For example, the communication system 100 can further include more network nodes, for example, more terminal devices, network devices, etc. Figure 2 The network devices or terminal devices included in the communication system shown in the figure can be various forms of network devices or terminal devices described above. The embodiments of the present application are not shown one by one in the figure.

[0080] It should also be understood that the network device 110 and the network device 120 can be deployed in a non-tightly coupled manner, i.e., the network device 110 and the network device 120 are deployed on different sites. Alternatively, the network device 110 and the network device 120 can also be deployed on the same site.

[0081] It should be understood that, in the embodiments of the present application, the terminal device and the network device are taken as examples of the execution subject of the execution method of each embodiment, and the method of each embodiment is described. By way of example but not limitation, the execution subject of the execution method can also be a chip applied to the terminal device and a chip applied to the network device, or the execution subject can also be an apparatus implementing the functions of the terminal device or the network device. For example, the terminal device can be an EN-DC terminal device.

[0082] As shown in Figure 3 , the communication method 200 shown in Figure 3 may include steps S210 to S230. Among them, S230 is an optional step. The following will be described in detail in combination with Figure 3 each step in the method 200.

[0083] S210, the network device sends high layer signaling to the terminal device, the high layer signaling including a first parameter set and a second parameter set. The first parameter set corresponds to a first transmission mode of the terminal device, and the second parameter set corresponds to a second transmission mode of the terminal device. The first transmission mode is an uplink single transmission mode, the second transmission mode is an uplink concurrent transmission mode, and the terminal device has antenna sharing capability. Correspondingly, the terminal device receives the high layer signaling.

[0084] S220, the network device sends indication information to the terminal device, wherein the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to indicate that the terminal device switches the transmission mode, wherein the switching transmission mode includes switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. Correspondingly, the terminal device receives the indication information.

[0085] S230, the terminal device determines the parameter set corresponding to the transmission mode indicated by the indication information, and uses the parameters included in the parameter set to perform transmission in the corresponding transmission mode.

[0086] In S210, in the scenario where the terminal device needs to switch the transmission mode, the network device will pre-configure the terminal with the first parameter set and the second parameter set through the high layer signaling. The terminal device supports the first transmission mode and the second transmission mode. The first parameter set corresponds to the first transmission mode of the terminal device, and the second parameter set corresponds to the second transmission mode of the terminal device. Among them, the first transmission mode is an uplink single transmission mode. The second transmission mode is an uplink concurrent transmission mode or a non-SUO mode. Optionally, the uplink single transmission mode can also be referred to as an uplink single transmission mode or a SUO transmission mode, and the uplink concurrent transmission mode can also be referred to as an uplink concurrent transmission mode or a non-SUO transmission mode.

[0087] Optionally, the terminal device can be a terminal device supporting EN-DC, a terminal device supporting MR-DC, a terminal device supporting new radio and evolved universal terrestrial radio access dual connectivity (NR-E-UTRA dual connectivity, NE-DC), a terminal device supporting supplementary uplink (SUL), or a terminal device supporting uplink carrier aggregation (UL-CA), etc. The antenna architecture of the terminal device can be at least one dedicated antenna and at least one shared antenna. For example, the dedicated antenna can be an NR dedicated antenna or an LTE dedicated antenna, and each of the at least one shared antenna can be switched between two carriers (carrier frequencies). At least one antenna of the terminal device can be switched between two carriers. The two carriers can both be NR carriers, or both be LTE carriers, or one be an NR carrier and the other be an LTE carrier. That is, the terminal device supports antenna sharing capability.

[0088] For example, when the antenna architecture of the terminal device is one NR dedicated transmitting antenna plus one LTE / NR shared transmitting antenna, for the NR side of the terminal device, the first transmission mode can be specifically an uplink NR dual-antenna single-transmission mode, and the second transmission mode can be specifically an uplink NR single-antenna and uplink LTE single-antenna parallel transmission mode. For another example, when the antenna architecture of the terminal device is two NR dedicated transmitting antennas plus one LTE / NR shared transmitting antenna, the first transmission mode can be specifically an uplink NR three-antenna single-transmission mode, and the second transmission mode can be specifically an uplink NR single-antenna and at least one LTE antenna parallel transmission mode or an uplink NR dual-antenna and uplink LTE single-antenna parallel transmission mode. In S210, the network device sends the first parameter set and the second parameter to the terminal device through high-layer signaling. The high-layer signaling can include, for example, RRC, medium access control (MAC) control element (CE), radio link control (RLC) signaling, etc. Correspondingly, the terminal device receives the first parameter set and the second parameter set through the high-layer signaling.

[0089] At S220, when the network device determines that the terminal device needs to switch the transmission mode (or also can be referred to as the switching of the uplink antenna working state), for example, the movement of the terminal device causes the distance between the terminal device and the network device to change, thereby causing the terminal device to need to switch the transmission mode, the network device generates indication information and sends the indication information to the terminal device. The indication information can be used to indicate one of the first transmission mode or the second transmission mode, that is, to instruct the terminal device to use the first transmission mode or the second transmission mode indicated by the indication information for uplink transmission. Alternatively, the indication information can be used to instruct the terminal device to switch the transmission mode. The switching of the transmission mode includes switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. Alternatively, the indication information can also be used to instruct the terminal device to switch from the currently used transmission mode to the first transmission mode or the second transmission mode. The currently used transmission mode of the terminal device can be understood as the initial transmission mode preconfigured by the network device for the terminal device when the terminal device initially accesses the system, or the transmission mode reconfigured by the network device for the terminal device through RRC reconfiguration signaling. The currently used transmission mode of the terminal device can be the uplink single transmission mode, or the uplink concurrent transmission mode or the non-SUO mode. Correspondingly, the terminal device receives the indication information.

[0090] At S230, the terminal can determine the transmission mode indicated by the indication information. Alternatively, when the indication information indicates that the terminal device switches the transmission mode, the transmission mode indicated by the indication information is the transmission mode after the switching. For example, the currently used transmission mode of the terminal device is the first transmission mode, and the transmission mode indicated by the indication information is the second transmission mode.

[0091] After the terminal device determines the transmission mode indicated by the indication information, the terminal device determines the parameter set corresponding to the transmission mode. And uses the parameters included in the parameter set to send data or information to the network device in the transmission mode. For example, assuming that the transmission mode indicated by the indication information is the second transmission mode, the terminal device uses the parameters included in the second set to communicate with the network device in the uplink concurrent transmission mode.

[0092] In the communication method provided by the embodiments of the present application, the network device configures the terminal device with parameter sets corresponding to the uplink single-transmission mode and the uplink concurrent-transmission mode respectively, and indicates the switching between the two transmission modes or indicates one of the transmission modes through indication information. The terminal device communicates with the network device in the transmission mode indicated by the indication information and the corresponding parameter set, without reconfiguring the parameter set corresponding to the current transmission mode through high-layer signaling, thereby reducing the time delay required for switching the transmission mode, improving the efficiency of communication between the terminal device and the network device that needs to switch the transmission mode, for example, the scenario in which the terminal device is moving and the distance changes, resulting in the need to switch the transmission mode. Further, since the transmission delay of reconfiguring the new parameter set through high-layer signaling is large, during this period, the actual uplink antenna working state of the terminal device may not match the expected uplink antenna working state of the terminal device of the network device. The embodiments of the present application can reduce the time delay of switching the transmission mode by sending the indication information through DCI, thereby improving the service quality. In summary, the communication method provided by the embodiments of the present application can improve the communication efficiency.

[0093] In some possible implementation manners of the present application, since the parameters corresponding to different transmission modes are different, in S210, the network device can configure the terminal device with two sets of parameters through high-layer signaling, i.e., a first parameter set and a second parameter set. The first parameter set includes parameters used when the first transmission mode is used, and the second parameter set includes parameters used when the second transmission mode is used.

[0094] Optionally, the first parameter set includes at least one of the maximum transmit power used by the first transmission mode, uplink reference signal related parameters used by the first transmission mode, physical uplink shared channel related parameters used by the first transmission mode, or physical uplink control channel spatial relation parameters used by the first transmission mode.

[0095] The second parameter set includes at least one of the maximum transmit power used by the second transmission mode, uplink reference signal related parameters used by the second transmission mode, physical uplink shared channel related parameters used by the second transmission mode, or physical uplink control channel spatial relation parameters used by the second transmission mode.

[0096] For the maximum transmit power, for example, the uplink NR single antenna parallel transmission mode (second transmission mode) means that only one power amplifier unit and radio frequency device chain are available on the NR side of the terminal device, so the high-level parameter p-Max used by the terminal device for power control must be half of that in the uplink NR dual antenna single transmission mode (first transmission mode). Therefore, the two uplink antenna working states need to be configured with different maximum transmit powers, that is, the first parameter set includes the maximum transmit power used in the first transmission mode, the first parameter set includes the maximum transmit power used in the second transmission mode, and the values of the two are different. In this paper, parallel transmission can refer to NR and LTE parallel transmission, and single transmission mode refers to uplink transmission of only one standard, for example, only NR uplink transmission or only LTE uplink transmission.

[0097] For the uplink reference signal, for example, taking the sounding reference signal (SRS) as an example, the uplink NR single antenna parallel transmission mode (second transmission mode) means that the terminal device only supports a single SRS port on the NR side, so the SRS resource (SRS-Resource) contained in each SRS resource set (SRS-Resource Set) in the SRS configuration (SRS-Config) is only applicable to a single SRS port. When the terminal device switches to the uplink NR dual antenna single transmission mode (first transmission mode) and supports the dual SRS port capability, the SRS-Resources used must be changed to the SRS resource transmitted on the dual SRS port. Therefore, the two uplink antenna working states need to be configured with different SRS-ResourceSet. That is, the first parameter set includes the uplink reference signal related parameters used in the first transmission mode, and the first parameter set includes the uplink reference signal related parameters used in the second transmission mode. The uplink reference signal related parameters included in the two are different.

[0098] For uplink shared channel related parameters. When the terminal device does not have the capability of uplink multiple input multiple output (MIMO) transmission in the uplink NR single antenna parallel transmission mode (second transmission mode), when the terminal device switches to the uplink NR dual antenna single transmission mode (first transmission mode), if the terminal device obtains the uplink MIMO capability, that is, supports dual stream (Layer) transmission, the maximum rank (maxRank) in the physical uplink shared channel (PUSCH) configuration information (PUSCH-Config) needs to be set to 2, and the code book subset (code book Subset) is configured as one of fully, partially and non-coherent (fully And Partial And Non Coherent), partially and non-coherent (partial And Non Coherent), or non-coherent (non Coherent) according to the capability of the terminal device at this time. Therefore, the PUSCH-Config configured in the two uplink antenna working states is different. That is, the first parameter set includes the PUSCH-Config used by the first transmission mode, and the first parameter set includes the PUSCH-Config used by the second transmission mode. The configuration parameters included are different.

[0099] For uplink control channel spatial relationship parameters. In the physical uplink control channel spatial relationship information (PUCCH-Spatial Relation Info), the beam used by the physical uplink control channel (PUCCH) signal is specified, which can be configured as the beam used when transmitting a certain SRS resource. Since the SRS resources used by the terminal device in the two transmission modes are different, the reference signal corresponding to the above beam needs to be re-specified. That is, the first parameter set includes the PUCCH spatial relationship parameters used by the first transmission mode, and the first parameter set includes the PUCCH spatial relationship parameters used by the second transmission mode. The PUCCH spatial relationship parameters included are different.

[0100] It should be understood that in the embodiments of the present application, the first parameter set can also include other parameters used by the terminal device when adopting the first transmission mode, and the second parameter set can also include other parameters used by the terminal device when adopting the second transmission mode. The present application is not limited herein.

[0101] The terminal device can use the parameters included in the first parameter set to communicate with the network device in the uplink single transmission mode, and use the parameters included in the second parameter set to communicate with the network device in the uplink concurrent transmission mode.

[0102] Optionally, in some possible implementation manners of the present application, the network device can send the indication information to the terminal device through downlink control information (DCI). As shown in Figure 4 Figure 4 is a schematic flowchart of a communication method in some embodiments of the present application, based on the method steps shown in Figure 3 the network device sends indication information to the terminal device, where the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to instruct the terminal device to switch transmission modes, where the switching transmission modes include switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. Correspondingly, the terminal device receiving the indication information can include S221.

[0103] S221, the network device sends DCI to the terminal device, and the DCI includes the indication information. The indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to instruct the terminal device to switch transmission modes. Where the switching transmission modes include switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. Correspondingly, the terminal device receives the DCI.

[0104] Figure 4 The steps S210 and S230 shown in can refer to the related description of S210 and S230 described above, and for the sake of brevity, will not be repeated here.

[0105] Since the protocol explicitly specifies the shortest scheduling interval of DCI scheduling and the validity time of DCI configuration parameters, the network device can send the indication information to the terminal device by carrying the indication information in the DCI. That is, in S221, the network device can send DCI to the terminal device, and the DCI includes the indication information. For example, the format of the DCI can be DCI format 01. After the terminal device receives the DCI and obtains the indication information therein, it can quickly determine the transmission mode indicated by the indication information, so as to quickly use the parameters corresponding to the transmission mode indicated by the indication information, and use the transmission mode indicated by the indication information to communicate with the network device. In this way, the time length of the ambiguous period of the terminal device switching transmission modes can be shortened, the time length required for the indication information to take effect can be shortened, the time point of the indication information to take effect can be determined, the terminal device can quickly and accurately switch transmission modes, the efficiency of the terminal device switching transmission modes can be improved, and the network device can be more flexible and efficient in scheduling. ​

[0106] Optionally, as a possible implementation manner, in S221, the DCI sent by the network device to the terminal device can be scrambled by using a first radio network temporary identifier (RNTI). The DCI scrambled by using the first RNTI can be understood as that a cyclic redundancy check (CRC) of the DCI is scrambled by using the first RNTI. The first RNTI used can be a dedicated RNTI, which is used to indicate that the terminal device switches the transmission mode, that is, the indication information can be understood as the first RNTI.

[0107] Optionally, the first RNTI can be configured to the terminal device by the network device through high-layer signaling together with the first parameter set and the second parameter. The terminal device blind detects the DCI by using the first RNTI. If the DCI is detected, for example, the CRC check is passed when a DCI is descrambled by using the first RNTI, the terminal device determines that the network device indicates the terminal device to switch the transmission mode. Then, the terminal device switches from the currently used transmission mode to the first transmission mode or the second transmission mode. And activates the parameters included in the corresponding parameter set. Then, the terminal device interprets each bit field in the DCI according to the new configuration parameter, and carries out the uplink service in the transmission mode (uplink antenna working state) after the switching. If the DCI blind detected by the terminal device is not scrambled by using the first RNTI, that is, the DCI cannot be blind detected by using the first RNTI, the terminal device keeps the current transmission mode unchanged.

[0108] By scrambling the DCI by using the dedicated first RNTI, the dedicated first RNTI is used to indicate the terminal device to switch the transmission mode. This facilitates implementation, has low complexity, and improves the efficiency and accuracy of indicating the terminal device to switch the transmission mode.

[0109] Optionally, the first RNTI can be a universal terrestrial radio access network temporary identifier (U-RNTI), or the first RNTI can be a cell network temporary identifier (C-RNTI), and the like. The present application does not make any limitation here.

[0110] Optionally, as another possible implementation, in S221, the DCI sent by the network device to the terminal device can be scrambled by the second RNTI or the third RNTI. That is, the network device can send the DCI scrambled by the second RNTI and the DCI scrambled by the third RNTI to the terminal device respectively. The second RNTI and the third RNTI are different. The second RNTI is used to instruct the terminal device to use the first transmission mode for transmission. The third RNTI is used to instruct the terminal device to use the second transmission mode for transmission. That is, the indication information can be understood as the second RNTI or the third RNTI. The second RNTI corresponds to the first transmission mode, and the third RNTI corresponds to the second transmission mode. Optionally, the second RNTI and the third RNTI can be configured to the terminal device by the network device through high-layer signaling and the first parameter set and the second parameter. The correspondence between the second RNTI and the third RNTI and the transmission mode can also be pre-configured by the network device or pre-defined by the protocol.

[0111] For example, the terminal device uses the second RNTI to blindly detect the DCI. If the DCI is detected, for example, when a certain DCI is descrambled by the second RNTI, the CRC check is passed, the terminal device determines that the network device instructs itself to use the first transmission mode for transmission. The terminal device switches from the currently used transmission mode to the first transmission mode. And activates the parameters included in the first parameter set. Then, the terminal device will interpret each bit field in the DCI according to the parameters of the first parameter set, and use the first transmission mode to carry out the uplink service.

[0112] For another example, the terminal device uses the third RNTI to blindly detect the DCI. If the DCI is detected, for example, when a certain DCI is descrambled by the third RNTI, the CRC check is passed, the terminal device determines that the network device instructs itself to use the second transmission mode for transmission. The terminal device switches from the currently used transmission mode to the second transmission mode. And activates the parameters included in the second parameter set. The terminal device will interpret each bit field in the DCI according to the parameters of the second parameter set, and use the second transmission mode to carry out the uplink service.

[0113] If the DCI blindly detected by the terminal device is not scrambled by the second RNTI and the third RNTI, that is, the DCI cannot be blindly detected by the second RNTI and the third RNTI, the terminal device keeps the current transmission mode unchanged.

[0114] By scrambling the DCI by different RNTIs, different RNTIs correspond to different transmission modes, which are used to instruct the terminal device to use different transmission modes. The efficiency and accuracy of instructing the terminal device to use different transmission modes are improved, which is convenient to implement.

[0115] Optionally, as another possible implementation, in S221, the network device includes a first field in the DCI sent to the terminal device, and the first field includes the indication information. For example, the first field can be a 1-bit length field, and the 1-bit length field can be understood as the indication information. The 1-bit field has two states: bit value 0 and bit value 1. The network device can be preconfigured that bit value 0 (first state) is used to indicate that the terminal device uses the first transmission mode for transmission, and bit value 1 (second state) is used to indicate that the terminal device uses the second transmission mode for transmission. Alternatively, the network device can be preconfigured that bit value 1 (first state) is used to indicate that the terminal device uses the first transmission mode for transmission, and bit value 0 (second state) is used to indicate that the terminal device uses the second transmission mode for transmission. That is, different bit states correspond to or are used to indicate that the terminal device uses different transmission modes.

[0116] For example, it is assumed that the network device is preconfigured that bit value 1 (second state) of the first field is used to indicate that the terminal device uses the second transmission mode for transmission, and bit value 0 (first state) is used to indicate that the terminal device uses the first transmission mode for transmission. The terminal device receives the DCI and parses the first field. If the terminal device parses the bit value of the first field as 1, the terminal device determines that the network device instructs it to use the second transmission mode for transmission. The terminal device switches from the currently used transmission mode to the second transmission mode, and activates the parameters included in the second parameter set. For example, when the terminal device switches to the NR single antenna working state, it will also halve the maximum transmit power, activate the single-port SRS resource set, switch to uplink single-stream transmission, associate the uplink control channel beam with a certain single-port SRS resource, and the like. The terminal device will also interpret each bit field in the DCI according to the parameters of the second parameter set, and use the second transmission mode to carry out uplink business. If the terminal device parses the bit value of the first field as bit value 0, the terminal device determines that the network device instructs it to use the first transmission mode for transmission. The terminal device switches from the currently used transmission mode to the first transmission mode, activates the parameters included in the first parameter set, and uses the first transmission mode to carry out uplink business.

[0117] When the terminal device detects that the bit state of the first field in the last received DCI and the bit state of the first field in the current received DCI have been flipped or changed, it can be inferred that the network device has issued a transmission mode switching instruction. The terminal device activates the corresponding configuration parameters and uses the corresponding transmission mode for communication.

[0118] Optionally, the indication information in the first field can also be used to instruct the terminal device to switch transmission mode. For example, the first field in the DCI can be a 1-bit field, and the network device pre-configures the bit value of the first field as 1 (first state) to instruct the terminal device to switch transmission mode, or pre-configures the bit value of the first field as 0 (second state) to instruct the terminal device to switch transmission mode.

[0119] For example, it is assumed that the network device pre-configures the bit value of 1 (first state) to instruct the terminal device to switch transmission mode. The terminal device receives the DCI and parses the first field. If the terminal device parses the bit value of the first field as 1, the terminal device determines that the network device instructs it to switch transmission mode, and the terminal device switches from the currently used transmission mode to the first transmission mode or the second transmission mode, and activates the parameters included in the corresponding parameter set. If the terminal device parses the bit value of the first field as 0, the terminal device keeps the current transmission mode unchanged.

[0120] It should be understood that the length of the first field can be multiple bits, and the indication information in the first field can also be 1 bit or multiple bits. The present application does not limit this.

[0121] By including the first field in the DCI, the first field includes indication information, and different states of the indication information instruct the terminal device to use different transmission modes for transmission, or the indication information instructs the terminal device to switch transmission mode. It is easy to implement, low complexity, and improves the efficiency and accuracy of instructing the terminal device to use different transmission modes and switch transmission modes.

[0122] Optionally, in some possible implementations of the present application, the network device can send indication information to the terminal device through a MAC CE. As shown in Figure 5 Figure 5 is a schematic flow chart of a communication method in some embodiments of the present application, based on the method steps shown in Figure 3 S220: the network device sends indication information to the terminal device, wherein the indication information is used to instruct one of the first transmission mode or the second transmission mode, or the indication information is used to instruct the terminal device to switch transmission mode, wherein the switching transmission mode includes switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. Correspondingly, the terminal device receiving the indication information can include S222.

[0123] ​S222, the network device sends a MAC CE to the terminal device, the MAC CE including the indication information. The indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to indicate the terminal device to switch transmission modes, where the switch transmission modes include switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. Correspondingly, the terminal device receives the MAC CE.

[0124] Figure 5 The steps S210 and S230 shown can refer to the related description of S210 and S230 described above, and for brevity, will not be repeated here.

[0125] Since the protocol explicitly specifies the effective time of the MAC CE configuration parameters, the network device can send the indication information to the terminal device by carrying the indication information in the MAC CE. That is, in S222, the network device can send a MAC CE to the terminal device, the MAC CE including the indication information. After the terminal device receives the MAC CE and obtains the indication information therein, the terminal device can quickly determine the transmission mode indicated by the indication information, so as to quickly use the parameters corresponding to the transmission mode indicated by the indication information, and use the transmission mode indicated by the indication information to communicate with the network device. The length of time of the ambiguous period of the terminal device switching transmission modes is shortened, thereby shortening the length of time required for the indication information to take effect, which can ensure that the terminal device quickly and accurately switches transmission modes, improve the efficiency of the terminal device switching transmission modes, and facilitate the network device to more flexibly and efficiently schedule.

[0126] Optionally, in S222, the network device can include the indication information in the MAC CE sent to the terminal device. The indication information can include one or more parameters included in the first parameter set, or one or more parameters included in the second parameter set. That is, the terminal device can be implicitly instructed to switch transmission modes or use a new transmission mode by indicating parameters to the terminal device.

[0127] Specifically, when the indication information is one or more parameters included in the first parameter set, the indication information is used to instruct the terminal device to use the first transmission mode corresponding to the first parameter set for transmission. When the indication information is one or more parameters included in the second parameter set, the indication information is used to instruct the terminal device to use the second transmission mode corresponding to the second parameter set for transmission.

[0128] Optionally, the indication information in the MAC CE can also be activation information of one or more parameters included in the first parameter set or activation information of one or more parameters included in the second parameter set, used to instruct the terminal device to activate the first parameter set or the second parameter set and use the first transmission mode or the second transmission mode for transmission. For example, when the indication information in the MAC CE is the activation information of one or more parameters included in the first parameter set, the terminal device receives the MAC CE, obtains the indication information therein, and determines that the indication information indicates the activation information of one or more parameters included in the first parameter set. Then the terminal device can determine that the indication information instructs itself to use the first transmission mode for transmission.

[0129] The following will be described in conjunction with specific examples.

[0130] For example, the protocol stipulates that the network device can configure a terminal device with a maximum of 16 SRS resource sets on one sub-bandwidth (BWP). The MAC CE format sent by the network device to the terminal device is as shown in the following table. Figure 6 Figure 6 One octet (Oct) in the table represents one byte composed of 8 bits. S0 to S 15 respectively represent the activation state of one pre-configured SRS resource set. S0 to S 15 have a length of 1 bit. When the bit value is 1, it represents that the corresponding SRS resource set is activated, and when the bit value is 0, it represents that the corresponding SRS resource set is deactivated. The 16 SRS resource sets include SRS resource sets of SRS resources with a port number of 1 and SRS resource sets of SRS resources with a port number of 2. When the network device indicates in the MAC CE payload sent to the terminal device that the activated SRS resource set includes the SRS resource set of SRS resources with a port number of 1, the terminal device can determine that the network device instructs itself to use the second transmission mode, for example, to use the uplink NR single-antenna parallel transmission mode. When the network device indicates in the MAC CE payload sent to the terminal device that the activated SRS resource set includes the SRS resource set of SRS resources with a port number of 2, the terminal device can determine that the network device instructs itself to switch from the first transmission mode to the first transmission mode, for example, to use the uplink NR double-antenna single-transmission mode.

[0131] ​Optionally, the MAC CE can further include uplink shared channel related parameters. For example, when the maxRank value included in the MAC CE is 1, the terminal device can infer that the network device has issued an instruction to switch to the second transmission mode, and the terminal device communicates with the network device in the second transmission mode. When the maxRank value included in the MAC CE is 2, the terminal device can infer that it needs to switch to the first transmission mode, and the terminal device communicates with the network device in the first transmission mode.

[0132] Optionally, the MAC CE can further carry a maximum transmission power. When the maximum transmission power value is equal to the sum of the transmission powers of the dual power amplifier device, the terminal device determines that the network instructs it to use the first transmission mode. When the maximum transmission power value is equal to the transmission power of the single power amplifier device, the terminal device determines that the network instructs it to use the second transmission mode.

[0133] Optionally, the MAC CE can further carry uplink control channel spatial domain relationship parameters. When the SRS resource indicated in the MAC CE is a single SRS port resource, the terminal device uses the second transmission mode or switches to the second transmission mode, for example, uses the uplink NR single antenna parallel transmission mode. When the SRS resource indicated in the MAC CE is a dual SRS port resource, the terminal device uses the first transmission mode or switches to the first transmission mode, for example, uses the uplink NR dual antenna single transmission mode.

[0134] It should be understood that in the embodiments of the present application, the MAC CE can carry part or all of the parameters in the first parameter set or the second parameter set. When the MAC CE carries part of the parameters included in a certain parameter set, the terminal device automatically activates the remaining parameters of the parameter set not included after receiving the MAC CE, and switches the transmission mode.

[0135] The network device sends the MAC CE to the terminal device, the MAC CE carries one or more parameters included in the first parameter set or carries one or more parameters included in the second parameter set, to instruct the terminal device to switch the transmission mode or instruct the terminal device to use the transmission mode. It is convenient to implement, has low complexity, and improves the efficiency and accuracy of instructing the terminal device to use different transmission modes and switch the transmission mode.

[0136] Optionally, in S222, the network device sends the MAC CE to the terminal device, and the MAC CE includes a second field including the indication information. The first state of the indication information is used to instruct the terminal device to use the first transmission mode for transmission, and the second state of the indication information is used to instruct the terminal device to use the second transmission mode for transmission. Or the indication information is used to instruct the terminal device to switch the transmission mode.

[0137] Specifically, the MAC CE can include a second field, and the second field includes the indication information. For example, the second field can be a 1-bit length field, and the 1-bit length field can be understood as the indication information. The 1-bit field has two states: a bit value of 0 and a bit value of 1. The network device can be preconfigured that the bit value of 0 (first state) is used to indicate that the terminal device uses the first transmission mode for transmission, and the bit value of 1 (second state) is used to indicate that the terminal device uses the second transmission mode for transmission. Alternatively, the network device can be preconfigured that the bit value of 1 (first state) is used to indicate that the terminal device uses the first transmission mode for transmission, and the bit value of 0 (second state) is used to indicate that the terminal device uses the second transmission mode for transmission. That is, different bit states correspond to or are used to indicate that the terminal device uses different transmission modes.

[0138] Optionally, the indication information in the second field can also be used to indicate that the terminal device switches the transmission mode. For example, the second field can be a 1-bit field, and the network device can be preconfigured that the bit value of 1 (first state) of the first field is used to indicate that the terminal device switches the transmission mode, or the bit value of 0 (second state) of the first field is used to indicate that the terminal device switches the transmission mode. It should be understood that for the case that the indication information in the second field is used to indicate that the terminal device switches the transmission mode, the length of the second field can be multiple bits, and the indication information in the second field can also be 1 bit or multiple bits. The present application does not limit this.

[0139] Through the second field included in the MAC CE, the second field includes the indication information, and different states of the indication information are used to indicate that the terminal device uses different transmission modes for transmission. Alternatively, the indication information is used to indicate that the terminal device switches the transmission mode. It is easy to implement, has low complexity, and improves the efficiency and accuracy of indicating that the terminal device uses different transmission modes and switches the transmission mode.

[0140] It should be understood that the length of the second field can be multiple bits, and the indication information in the second field can also be 1 bit or multiple bits. The present application does not limit this.

[0141] Optionally, the network device can also only pre-configure the terminal device with a parameter set corresponding to an initial transmission mode. The initial transmission mode can be the first transmission mode or the second transmission mode. That is, the network device can pre-configure the terminal device with only one of the first parameter set or the second parameter set through high-layer signaling. For example, there is an EN-DC terminal device, which searches for a certain service cell and performs random access. After successfully establishing an RRC connection, the network device decides that the NR side of the terminal device works in a single-antenna initial working state (second transmission mode). The network device pre-configures the terminal device with the parameters included in the second parameter set through RRC. The terminal device communicates with the network device in the single-antenna working state. When the network device decides that the terminal device needs to switch to an NR multi-antenna working state (first transmission mode), the network device will send the terminal device the necessary RRC parameters (parameters included in the first parameter set) of the NR multi-antenna working state through RRC reconfiguration signaling. After successfully receiving these parameters, the terminal device saves the configured NR dual-antenna parameters, and sends an acknowledgement message to the network device. The network device considers that the terminal device works in a dual-antenna state after receiving the acknowledgement message. The terminal device switches from the second transmission mode to the first transmission mode.

[0142] Optionally, the terminal device can work in a default working state. The default working state can be one of the following three working states.

[0143] Optionally, the network device can configure the terminal device with an initial transmission mode through high-layer signaling. For example, there is an EN-DC terminal device, and the antenna architecture of the terminal device is one NR dedicated antenna and one NR / LTE shared antenna. After the terminal device searches for a certain service cell and performs random access, the network device can configure the terminal device to use any of the following three working states as the initial working state through RRC signaling. The three working states are as follows:

[0144] The first working state is 1Tx+1Tx.

[0145] The second working state is 1Tx+2Tx (1port).

[0146] The third working state is 1Tx+2Tx (2port).

[0147] The first working state: 1Tx+1Tx. The 1 before "+" represents that the maximum number of antennas supported by the LTE side (or the maximum number of physical antenna ports available for the LTE side) is 1, and the 1 after "+" represents that the maximum number of antennas supported by the NR side (or the maximum number of physical antenna ports available for the NR side) is 1. The specific form of the first working state can be that the terminal device transmits NR data by using the NR dedicated antenna and transmits LTE data by using the shared antenna, that is, 1Tx+1Tx. Wherein, the number of virtual logical ports configured for the NR side of the terminal device is 1, and the number of virtual logical ports configured for the LTE side of the terminal device is also 1. The terminal device can be configured to transmit data on any virtual logical port number by using any antenna not more than the total number of antennas, but the number of virtual logical ports cannot exceed the number of physical antenna ports configured for the side. The first working state is an uplink concurrent mode, which belongs to the second transmission mode.

[0148] The second working state: 1Tx+2Tx (1port). The 1 of 1Tx represents that the maximum number of antennas supported by the LTE side (or the maximum number of physical antenna ports supported) is 1, and the 2 of 2Tx represents that the maximum number of antennas supported by the NR side (or the maximum number of physical antenna ports supported) is 2. And the number of virtual logical ports configured for the NR side of the terminal device is 1, so the specific form of the second working state can be 0Tx+2Tx (1port), or 1Tx+0Tx. Both are uplink single transmission modes, which belong to the first transmission mode.

[0149] The third working state: 1Tx+2Tx (2port). The 1 of 1Tx represents that the maximum number of antennas supported by the LTE side (or the maximum number of physical antenna ports supported) is 1, and the 2 of 2Tx represents that the maximum number of antennas supported by the NR side (or the maximum number of physical antenna ports supported) is 2, and the number of virtual logical ports configured for the NR side of the terminal device is 2. Since the number of virtual logical ports cannot exceed the number of physical antenna ports configured for the side, the specific form of the third working state can be that the terminal device transmits NR data by using the NR dedicated antenna and the shared antenna, and does not transmit LTE data, that is, 0Tx+2Tx (2port). The third working state is an uplink single transmission mode, which belongs to the first transmission mode, or the terminal device transmits LTE data by using the shared antenna and does not transmit NR data, that is, 1Tx+0Tx, which also belongs to the first transmission mode.

[0150] The network device configures an initial working mode for the terminal device, and can notify the terminal device of an initial working state by using RRC signaling. The initial working state can be any one of the three working states described above. The second working state and the third working state can use the parameters included in the first parameter set.

[0151] It should also be understood that if the network device does not notify (or configure) the terminal device of the initial working state. For example, when the RRC signaling for notifying the initial working state is absent, the terminal device works in a default working state. The default working state can be any one of the three working states described above.

[0152] When the network device decides that the terminal device needs to switch the working state, the network device can instruct the terminal device to switch the working state by using the indication information (for example, RRC reconfiguration signaling, DCI or MAC CE) described above. If the indication information indicates that the terminal device switches to the second working state or the third working state described above, the terminal device can use the parameters included in the first parameter set for transmission. If the indication information indicates that the terminal device switches to the first working state described above, the terminal device can use the parameters included in the second parameter set for transmission.

[0153] In the communication method provided by the embodiment of the present application, the network device configures the parameter set corresponding to the uplink single-transmission mode and the uplink concurrent-transmission mode for the terminal device respectively, and instructs the terminal device to switch between the two transmission modes or instructs one of the transmission modes by using the indication information. The terminal device communicates with the network device by using the transmission mode and the corresponding parameter set indicated by the indication information, without reconfiguring the parameter set corresponding to the current transmission mode by using high-layer signaling, thereby reducing the time delay required for switching the transmission mode, and improving the communication efficiency between the terminal device and the network device that needs to switch the transmission mode, for example, the scenario in which the distance between the mobile terminal device and the network device changes and the transmission mode needs to be switched. Further, since the transmission delay of reconfiguring the new parameter set by using high-layer signaling is large, during this period, the actual uplink antenna working state of the terminal device can not match the expected uplink antenna working state of the terminal device by the network device. The embodiment can reduce the time delay of switching the transmission mode by sending the indication information by using DCI, thereby improving the service quality. In summary, the communication method provided by the embodiment of the present application can improve the communication efficiency.

[0154] It should be understood that in various embodiments of the present application, the first, second, etc. are only for the convenience of description. For example, the first parameter set and the second parameter set are only to represent different parameter sets. The above-mentioned first, second, etc. should not have any impact on the number of parameter sets themselves and should not have any limitation on the embodiments of the present application.

[0155] It should also be understood that the above is only to help those skilled in the art better understand the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application. Those skilled in the art can obviously make various equivalent modifications or changes according to the above examples, for example, some steps in various embodiments of the above method 200 can be unnecessary, or some steps can be newly added, etc. Or a combination of any two or more embodiments. Such modifications, changes or combinations also fall within the scope of the embodiments of the present application.

[0156] It should also be understood that the above description of the embodiments of the present application focuses on the differences between the various embodiments, and the same or similar parts not mentioned can be referred to each other, and for the sake of brevity, will not be repeated here.

[0157] It should also be understood that the size of the sequence number of the above processes does not mean the order of execution, and the execution order of the processes should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0158] It should also be understood that in the embodiments of the present application, "pre-setting" and "pre-defining" can be realized by pre-saving the corresponding code, table or other means that can be used to indicate the relevant information in the device (for example, including terminal and network device), and the present application does not limit the specific implementation manner.

[0159] It should also be understood that the division of the mode, case, category and embodiment in the embodiments of the present application is only for the convenience of description, and should not constitute a special limitation. The features in various modes, categories, cases and embodiments can be combined without contradiction.

[0160] It should also be understood that in various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0161] The above is combined with Figures 1 to 6 The communication method of the embodiments of the present application is described in detail. In the following, the communication device of the embodiments of the present application is described in detail. Figures 7 to 13 The communication device of the embodiments of the present application is described in detail.

[0162] Figure 7A schematic block diagram of a communication apparatus 300 is shown, which can correspond to the terminal device described in the method 200, or can be a chip or component applied to the terminal device, and each module or unit in the apparatus 300 is respectively used to perform each action or processing process performed by the terminal device in the method 200.

[0163] As shown in Figure 6 The apparatus 300 can include a transceiver 310 and a processing unit 320. The transceiver 310 is configured to perform specific signal transceiving under the driving of the processing unit 320.

[0164] The transceiver 310 is configured to receive high layer signaling, the high layer signaling including a first parameter set and a second parameter set, the first parameter set corresponding to a first transmission mode of the communication apparatus, and the second parameter set corresponding to a second transmission mode of the communication apparatus, the first transmission mode being an uplink single transmission mode, and the second transmission mode being an uplink concurrent transmission mode.

[0165] The transceiver 310 is further configured to receive indication information, wherein the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to indicate that the communication apparatus switches the transmission mode, wherein the switching of the transmission mode includes switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode.

[0166] Optionally, the processing unit 320 is configured to determine a parameter set corresponding to the transmission mode indicated by the indication information, and use parameters included in the parameter set to perform transmission in the corresponding transmission mode.

[0167] The communication apparatus provided in the embodiments of the present application is configured to configure, for a terminal device, a parameter set corresponding to an uplink single-transmission mode and a parameter set corresponding to an uplink concurrent-transmission mode, and to indicate, by using indication information, switching between the two transmission modes or one of the two transmission modes. The terminal device communicates with the network device by using the transmission mode indicated by the indication information and the corresponding parameter set, without reconfiguring the parameter set corresponding to the current transmission mode by using high-layer signaling, thereby reducing the time delay required for switching the transmission mode, improving the efficiency of communication between the terminal device and the network device in a scenario where the terminal device needs to switch the transmission mode, for example, a scenario where the terminal device is moving and the distance between the terminal device and the network device changes. Further, since the transmission delay is large when the high-layer signaling reconfigures a new parameter set, the actual uplink antenna working state of the terminal device may not match the expected uplink antenna working state of the terminal device in the network device during this period of time. The embodiments of the present application can reduce the time delay for switching the transmission mode by sending the indication information by using DCI, thereby improving the service quality. In summary, the communication method provided in the embodiments of the present application can improve the communication efficiency.

[0168] Optionally, in some embodiments of the present application, the transceiver 310 is further configured to receive downlink control information DCI, wherein the DCI includes the indication information.

[0169] Optionally, in some embodiments of the present application, the indication information is a first radio network temporary identifier RNTI, the DCI is scrambled by the first RNTI, and the first RNTI is used to indicate the communication apparatus to switch the transmission mode.

[0170] Optionally, in some embodiments of the present application, the indication information is a second radio network temporary identifier RNTI or a third RNTI, the DCI is scrambled by the second RNTI or the third RNTI,

[0171] wherein the second RNTI is used to indicate the communication apparatus to use the first transmission mode for transmission;

[0172] the third RNTI is used to indicate the communication apparatus to use the second transmission mode for transmission.

[0173] Optionally, in some embodiments of the present application, the DCI includes a first field, and the first field includes the indication information.

[0174] The first state of the indication information is used to indicate the communication apparatus to use the first transmission mode for transmission, and the second state of the indication information is used to indicate the communication apparatus to use the second transmission mode for transmission; or

[0175] The indication information is used to indicate the communication apparatus to switch the transmission mode.

[0176] Optionally, in some embodiments of the present application, the transceiver is further configured to receive a media access control element (MAC CE) including the indication information.

[0177] Optionally, in some embodiments of the present application, the indication information is one or more parameters included in the first parameter set, or one or more parameters included in the second parameter set,

[0178] When the indication information is one or more parameters included in the first parameter set, the indication information is used to instruct the communication apparatus to perform transmission in the first transmission mode corresponding to the first parameter set.

[0179] When the indication information is one or more parameters included in the second parameter set, the indication information is used to instruct the communication apparatus to perform transmission in the second transmission mode corresponding to the second parameter set.

[0180] Optionally, in some embodiments of the present application, the MAC CE includes a second field, and the second field includes the indication information,

[0181] a first state of the indication information is used to instruct the communication apparatus to perform transmission in the first transmission mode, and a second state of the indication information is used to instruct the communication apparatus to perform transmission in the second transmission mode; or

[0182] the indication information is used to instruct the communication apparatus to switch transmission mode.

[0183] Optionally, in some embodiments of the present application, the processing unit 320 is configured to determine a parameter set corresponding to the transmission mode indicated by the indication information.

[0184] When the transmission mode indicated by the indication information is switching from the first transmission mode to the second transmission mode, or the indication information instructs the communication apparatus to perform transmission in the second transmission mode,

[0185] perform transmission in the second transmission mode using parameters included in the second parameter set; or

[0186] When the transmission mode indicated by the indication information is switching from the second transmission mode to the first transmission mode, or the indication information instructs the communication apparatus to perform transmission in the first transmission mode,

[0187] perform transmission in the first transmission mode using parameters included in the first parameter set.

[0188] Optionally, in some embodiments of the present application, the first parameter set comprises at least one of: maximum transmit power used by the first transmission mode, uplink reference signal related parameter used by the first transmission mode, physical uplink shared channel related parameter used by the first transmission mode, or physical uplink control channel spatial relation parameter used by the first transmission mode.

[0189] The second parameter set comprises at least one of: maximum transmit power used by the second transmission mode, uplink reference signal related parameter used by the second transmission mode, physical uplink shared channel related parameter used by the second transmission mode, or physical uplink control channel spatial relation parameter used by the second transmission mode.

[0190] Optionally, in some embodiments of the present application, the uplink single-shot mode is an uplink NR multi-antenna single-shot mode, and the uplink concurrent mode is an uplink NR single-antenna and uplink LTE single-antenna concurrent transmission mode.

[0191] Optionally, in some embodiments of the present application, the transceiver 310 is further configured to receive high-layer signaling sent by the network device, the high-layer signaling being used for configuring an initial working state or transmission mode adopted by the terminal device. The high-layer signaling used for configuring the initial working state or initial transmission mode and the high-layer signaling used for configuring the first parameter set and the second parameter set can be the same high-layer signaling or different high-layer signaling. The different high-layer signaling can be different types of high-layer signaling or the same type of high-layer signaling.

[0192] Optionally, in some embodiments of the present application, the processing unit 320 uses a default working state (or transmission mode) as the initial working state or transmission mode. Optionally, the default working state can be any one of the first transmission mode or the second transmission mode.

[0193] Further, the apparatus 300 can further comprise a storage unit. The transceiver 310 can be a transceiver, an input / output interface or an interface circuit. The storage unit is used to store instructions executed by the transceiver 310 and the processing unit 320. The transceiver 310, the processing unit 320 and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 320 is configured to execute the instructions stored in the storage unit, and the transceiver 310 is configured to perform specific signal transceiving under the driving of the processing unit 320.

[0194] It should be understood that the specific processes in which the units in the apparatus 300 perform the corresponding steps described above can refer to the descriptions of the terminal device related to the method 200 and the apparatus 300 related to the method 300 in the foregoing embodiments of the present application, and will not be repeated here for brevity. Figures 3 to 5

[0195] ​Optionally, the transceiver unit 310 can include a receiving unit (module) and a transmitting unit (module) for performing the steps of the above-described method 200 and Figures 3 to 5 the steps of receiving and transmitting information by the terminal device in the embodiments.

[0196] It should be understood that the transceiver unit 310 can be a transceiver, an input / output interface or an interface circuit. The storage unit can be a memory. The processing unit 320 can be implemented by a processor. As Figure 8 shown, the communication apparatus 400 can include a processor 410, a memory 420, a transceiver 430 and a bus system 440. The various components of the communication apparatus 400 are coupled together by the bus system 440, which can include, in addition to a data bus, a power bus, a control bus, and a state signal bus, etc. However, for the sake of clarity, only the bus system 440 is shown in Figure 8 various buses are labeled as bus system 440. For the sake of presentation, the detailed Figure 8 schematic diagram is not shown in

[0197] Figure 7 the communication apparatus 300 or Figure 8 the communication apparatus 400 shown above can implement the steps performed by the terminal device in the embodiments of the above-described method 200. Similar descriptions can be referred to the descriptions in the corresponding methods. To avoid repetition, they will not be described here. Figures 3 to 5

[0198] It should also be understood that Figure 7 the communication apparatus 300 or Figure 8 the communication apparatus 400 shown above can be a terminal device. The terminal device supports antenna sharing capability. For example, the terminal device can be a terminal device supporting EN-DC, a terminal device supporting MR-DC, a terminal device supporting NE-DC, a terminal device supporting SUL, or a terminal device supporting UL-CA, etc. The antenna architecture of the terminal device can be at least one dedicated antenna and at least one shared antenna.

[0199] Figure 9 a schematic block diagram of a communication apparatus 500 of an embodiment of the present application is shown, which can correspond to the network device described in the above-described method 200, or can be a chip or component applied to the network device, and each module or unit in the apparatus 500 is respectively used to perform each action or processing process of the network device described in the above-described method 200.

[0200] As Figure 9 shown, the apparatus 500 can include a transceiver unit 510 and a processing unit 520. The transceiver unit 510 is used to perform specific signal transceiving under the driving of the processing unit 520. ​

[0201] The transceiver 510 is configured to transmit high-layer signaling, the high-layer signaling including a first parameter set and a second parameter set, the first parameter set corresponding to a first transmission mode of the terminal device, and the second parameter set corresponding to a second transmission mode of the terminal device, the first transmission mode being an uplink single-transmission mode, and the second transmission mode being an uplink concurrent-transmission mode.

[0202] The processing unit 520 is configured to generate indication information.

[0203] The transceiver 510 is further configured to transmit the indication information, where the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to indicate that the terminal device switches transmission modes, where the switching transmission modes includes switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode. The terminal device supports an antenna sharing capability. For example, the terminal device can be a terminal device supporting EN-DC, a terminal device supporting MR-DC, a terminal device supporting NE-DC, a terminal device supporting SUL, or a terminal device supporting UL-CA, etc. The antenna architecture of the terminal device can be at least one dedicated antenna and at least one shared antenna.

[0204] The communication apparatus provided in the present application can achieve the effects of the above communication method, which will not be described here.

[0205] Optionally, in some embodiments of the present application, the transceiver 510 is further configured to transmit downlink control information DCI, where the DCI includes the indication information.

[0206] Optionally, in some embodiments of the present application, the indication information is a first radio network temporary identifier RNTI, the DCI is scrambled by the first RNTI, and the first RNTI is used to indicate that the terminal device switches transmission modes.

[0207] Optionally, in some embodiments of the present application, the indication information is a second radio network temporary identifier RNTI or a third RNTI, the DCI is scrambled by the second RNTI or the third RNTI,

[0208] where the second RNTI is used to indicate that the terminal device transmits in the first transmission mode;

[0209] and the third RNTI is used to indicate that the terminal device transmits in the second transmission mode.

[0210] Optionally, in some embodiments of the present application, the DCI includes a first field, and the first field includes the indication information.

[0211] The first state of the indication information is used to instruct the terminal device to use the first transmission mode for transmission, and the second state of the indication information is used to instruct the terminal device to use the second transmission mode for transmission.

[0212] The indication information is used to instruct the terminal device to switch transmission modes.

[0213] Optionally, in some embodiments of the present application, the transceiver 510 is further configured to send a medium access control element (MAC CE) including the indication information.

[0214] Optionally, in some embodiments of the present application, the indication information is one or more parameters included in the first parameter set or one or more parameters included in the second parameter set.

[0215] When the indication information is one or more parameters included in the first parameter set, the indication information is used to instruct the terminal device to use the first transmission mode corresponding to the first parameter set for transmission.

[0216] When the indication information is one or more parameters included in the second parameter set, the indication information is used to instruct the terminal device to use the second transmission mode corresponding to the second parameter set for transmission.

[0217] Optionally, in some embodiments of the present application, the MAC CE includes a second field including the indication information.

[0218] The first state of the indication information is used to instruct the terminal device to use the first transmission mode for transmission, and the second state of the indication information is used to instruct the terminal device to use the second transmission mode for transmission.

[0219] The indication information is used to instruct the terminal device to switch transmission modes.

[0220] Optionally, in some embodiments of the present application, the first parameter set includes at least one of a maximum transmit power used by the first transmission mode, an uplink reference signal related parameter used by the first transmission mode, a physical uplink shared channel related parameter used by the first transmission mode, or a physical uplink control channel spatial relation parameter used by the first transmission mode.

[0221] The second parameter set includes at least one of a maximum transmit power used by the second transmission mode, an uplink reference signal related parameter used by the second transmission mode, a physical uplink shared channel related parameter used by the second transmission mode, or a physical uplink control channel spatial relation parameter used by the second transmission mode.

[0222] Optionally, in some embodiments of the present application, the uplink single transmission mode is an uplink NR multi-antenna single transmission mode, and the uplink concurrent transmission mode is an uplink NR single-antenna and uplink LTE single-antenna concurrent transmission mode.

[0223] Optionally, in some embodiments of the present application, the transceiver 510 is further configured to send, to the terminal device, high-layer signaling including an initial working state or transmission mode adopted by the terminal device. The high-layer signaling for configuring the initial working state or initial transmission mode and the high-layer signaling for configuring the first parameter set and the second parameter set can be the same high-layer signaling or different high-layer signaling. The different high-layer signaling can be different types of high-layer signaling or the same type of high-layer signaling.

[0224] It should be understood that the specific processes by which the units in the apparatus 500 perform the corresponding steps described above can refer to the related descriptions of the network device in the foregoing method 200 and the embodiments of the network device in the foregoing apparatus 500. Figures 3 to 5 For brevity, the detailed descriptions are not repeated here.

[0225] Optionally, the transceiver 510 can include a receiving unit (module) and a sending unit (module) for performing the steps of the various embodiments of the foregoing method 200 and the steps of the network device in the embodiments of the foregoing apparatus 500. Figures 3 to 5 For brevity, the detailed descriptions are not repeated here.

[0226] Further, the apparatus 500 can further include a storage unit, and the transceiver 510 can be a transceiver, an input / output interface, or an interface circuit. The storage unit is configured to store instructions executed by the transceiver 510 and the processing unit 520. The transceiver 510, the processing unit 520, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 520 is configured to execute the instructions stored in the storage unit, and the transceiver 510 is configured to perform specific signal transceiving under the driving of the processing unit 520.

[0227] It should be understood that the transceiver 510 can be a transceiver, an input / output interface, or an interface circuit. The storage unit can be a memory. The processing unit 520 can be implemented by a processor. As shown in the foregoing apparatus 500 or the apparatus 600, the communication device 600 can include a processor 610, a memory 620, and a transceiver 630. Figure 10

[0228] Figure 9 The communication device 500 or the communication device 600 shown in the foregoing apparatus 500 or the apparatus 600 can implement the steps performed by the network device in the various embodiments of the foregoing method 200 and the steps performed by the network device in the embodiments of the foregoing apparatus 500. Figure 10 The communication device 500 or the communication device 600 shown in the foregoing apparatus 500 or the apparatus 600 can implement the steps performed by the network device in the various embodiments of the foregoing method 200 and the steps performed by the network device in the embodiments of the foregoing apparatus 500. Figures 3 to 5 For brevity, the detailed descriptions are not repeated here. Similar descriptions can refer to the descriptions in the corresponding methods. For brevity, the detailed descriptions are not repeated here.

[0229] It should be further understood that,​Figure 9 The communication apparatus 500 or Figure 10 The communication apparatus 600 can be a network device.

[0230] It should also be understood that the division of the units in the above apparatus is only a logical functional division, and all or part of the units can be integrated into one physical entity, or can be physically separated. The units in the apparatus can all be implemented in the form of software invoked by a processing element; or all be implemented in the form of hardware; or some units are implemented in the form of software invoked by a processing element, and some units are implemented in the form of hardware. For example, each unit can be a separately configured processing element, or can be integrated into a chip of the apparatus, in addition, the unit can also be stored in the form of a program in the memory, and the function of the unit is invoked and executed by a processing element of the apparatus. The processing element can also be referred to as a processor, which can be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each unit can be implemented by integrated logic circuits of hardware in the processing element, or in the form of software invoked by the processing element.

[0231] In one example, the units in any of the above apparatuses can be one or more integrated circuits configured to implement the above method, for example: one or more application specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs), or a combination of at least two of the above integrated circuit forms. For another example, when the units in the apparatus can be implemented in the form of a program invoked by a processing element, the processing element can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke a program. For another example, the units can be integrated together to implement a system-on-a-chip (SOC).

[0232] Figure 11 A structure schematic diagram of a terminal device 700 is provided. The apparatus 300 or 400 described above can be configured in the terminal device 700. Alternatively, the apparatus 300 or 400 itself can be the terminal device 700. In other words, the terminal device 700 can perform the actions performed by the terminal device in the method 200 described above.

[0233] For ease of illustration, Figure 11 Only the main components of the terminal device are shown. For example,Figure 11 As shown, the terminal device 700 includes a processor, a memory, a control circuit, an antenna and an input / output device.

[0234] The processor is mainly used for processing communication protocols and communication data, and controlling the whole terminal device, executing software programs, processing data of the software programs, for example, for supporting the terminal device to perform the actions described in the embodiments of the method for indicating a transmission precoding matrix. The memory is mainly used for storing software programs and data, for example, storing the codebook described in the embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals, and processing radio frequency signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used for transceiving radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used for receiving user input data and outputting data to the user.

[0235] When the terminal device is powered on, the processor can read the software programs in the storage unit, interpret and execute the instructions of the software programs, and process the data of the software programs. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0236] Those skilled in the art can understand that, in order to facilitate the description, Figure 11 Only one memory and one processor are shown. In actual terminal devices, there can be multiple processors and memories. The memory can also be referred to as a storage medium or a storage device, and the embodiments of the present application do not limit this.

[0237] For example, the processor can include a baseband processor and a central processor. The baseband processor is mainly used for processing communication protocols and communication data, and the central processor is mainly used for controlling the whole terminal device, executing software programs, and processing data of the software programs. Figure 11The processor in the above embodiment integrates the functions of the baseband processor and the central processor. Those skilled in the art can understand that the baseband processor and the central processor can also be independent processors, which are interconnected by a bus or the like. Those skilled in the art can understand that the terminal device can include multiple baseband processors to accommodate different network standards, and the terminal device can include multiple central processors to enhance its processing capability. The various components of the terminal device can be connected by various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The functions of processing communication protocols and communication data can be built into the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0238] For example, in the embodiments of the present application, the antenna with transceiving function and the control circuit can be regarded as the transceiving unit 701 of the terminal device 700, and the processor with processing function can be regarded as the processing unit 702 of the terminal device 700. As shown in Figure 10 , the terminal device 700 includes the transceiving unit 701 and the processing unit 202. The transceiving unit can also be referred to as a transceiver, a transceiver, a transceiver, etc. Optionally, the devices in the transceiving unit 701 for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiving unit 701 for implementing the transmitting function can be regarded as a transmitting unit, that is, the transceiving unit 701 includes a receiving unit and a transmitting unit. For example, the receiving unit can also be referred to as a receiver, a receiver, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0239] Figure 12 Another structure schematic diagram of a terminal device 800 provided in the present application is shown in Figure 12 , the terminal device includes a processor 810, a transmitting data processor 820, and a receiving data processor 830. The processing unit 320 in the above embodiment can be Figure 12 the processor 810 in the above embodiment, and complete the corresponding functions. The transceiving unit 310 in the above embodiment can be Figure 12 the transmitting data processor 820 and / or the receiving data processor 830 in the above embodiment. Although Figure 12 the channel encoder and the channel decoder are shown in the above embodiment, it can be understood that these modules do not constitute a limiting description of the present embodiment, but are only illustrative.

[0240] Figure 13A structural diagram of a network device 900 provided by an embodiment of the present application can be used to implement the functions of the network device in the above method. The network device 900 includes one or more radio frequency units, such as a remote radio unit (RRU) 901 and one or more baseband units (BBU) (also referred to as a digital unit, DU) 902. The RRU 901 can be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which can include at least one antenna 9011 and a radio frequency unit 9012. The RRU 901 part is mainly used for the transceiving of radio frequency signals and the conversion between radio frequency signals and baseband signals, for example, for sending the signaling message in the above embodiment to the terminal device. The BBU 902 part is mainly used for baseband processing, controlling the base station, etc. The RRU 901 and the BBU 902 can be physically arranged together or physically arranged separately, i.e., a distributed base station.

[0241] The BBU 902 is the control center of the base station, also referred to as a processing unit, mainly used to complete the baseband processing functions such as channel coding, multiplexing, modulation, spreading, etc. For example, the BBU (processing unit) 902 can be used to control the base station 90 to perform the operation processes of the network device in the above method embodiments.

[0242] In one example, the BBU 902 can be composed of one or more single boards, and multiple single boards can jointly support a single access mode wireless access network (such as an LTE system or a 5G system), or can separately support wireless access networks of different access modes. The BBU 902 further includes a memory 9021 and a processor 9022. The memory 9021 is used to store necessary instructions and data. For example, the memory 9021 stores the codebook in the above embodiment, etc. The processor 9022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the operation processes of the network device in the above method embodiments. The memory 9021 and the processor 9022 can serve one or more single boards. That is, a memory and a processor can be separately arranged on each single board. Multiple single boards can also share the same memory and processor. In addition, necessary circuits can also be arranged on each single board.

[0243] In a possible implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of the 902 part and the 901 part can be implemented by SoC technology, for example, by a base station function chip that integrates a processor, a memory, an antenna interface, and the like, and the program of the base station related function is stored in the memory, and the processor executes the program to implement the related function of the base station. Optionally, the base station function chip can also read the memory outside the chip to implement the related function of the base station.

[0244] It should be understood that Figure 13 The structure of the example network device is only one possible form, and should not constitute any limitation on the embodiments of the present application. The present application does not exclude the possibility of other forms of base station structures that may appear in the future.

[0245] It should be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and the processor can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0246] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0247] The above-described embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented by software, the above-described embodiments can be implemented, in whole or in part, in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When loaded or executed on a computer, the computer instructions or computer programs produce, in whole or in part, the processes or functions according to the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

[0248] The computer instructions can be stored in or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through a wired (for example, infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. containing one or a set of available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid state disk.

[0249] The embodiment of the present application also provides a communication system, comprising the terminal device and the network device.

[0250] The embodiment of the present application also provides a computer readable medium for storing computer program code, the computer program comprising instructions for executing the communication method of the embodiment of the present application in the method 200.

[0251] The present application also provides a computer program product comprising instructions which, when executed, cause a terminal device and a network device to perform operations corresponding to the terminal device and the network device of the method described above.

[0252] The embodiment of the present application also provides a system chip, comprising a processing unit, for example, a processor, and a communication unit, for example, an input / output interface, a pin or a circuit, etc. The processing unit can execute computer instructions to cause the chip in the communication device to perform any of the communication methods provided by the embodiments of the present application.

[0253] Optionally, any of the communication devices provided by the embodiments of the present application can comprise the system chip.

[0254] Optionally, the computer instructions are stored in the storage unit.

[0255] Optionally, the storage unit is a storage unit within the chip, such as a register, a cache, etc. The storage unit can also be a storage unit outside the chip within the terminal, such as a ROM or other type of static storage device that can store static information and instructions, a RAM, etc. The processor mentioned in any of the above can be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the communication method mentioned above. The processing unit and the storage unit can be decoupled and arranged on different physical devices, and connected through wired or wireless means to realize the respective functions of the processing unit and the storage unit to support the system chip to realize various functions in the above embodiments. Alternatively, the processing unit and the storage unit can be coupled on the same device.

[0256] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. The non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0257] The terms "system" and "network" are often used interchangeably herein. The term "and / or", merely describes an associated relationship, which means that there can be three relationships, for example, A and / or B, which can represent: A alone, A and B together, and B alone. In addition, the character " / " generally represents an "or" relationship between the associated objects before and after it.

[0258] The terms "uplink" and "downlink" appearing in the present application are used to describe the direction of data / information transmission in a specific scenario, for example, the "uplink" direction generally refers to the direction of data / information transmission from the terminal to the network side, or the direction of data / information transmission from the distributed unit to the centralized unit, and the "downlink" direction generally refers to the direction of data / information transmission from the network side to the terminal, or the direction of data / information transmission from the centralized unit to the distributed unit. It can be understood that "uplink" and "downlink" are only used to describe the direction of data / information transmission, and the specific start and end devices of the data / information transmission are not limited.

[0259] In the present application, various messages / information / equipment / network elements / systems / devices / actions / operations / processes / concepts and other types of objects may be named. It can be understood that these specific names do not constitute a limitation on the related objects, and the assigned names can be changed according to the scene, context or usage habits, etc. The technical meaning of the technical terms in the present application should be mainly determined from the function and technical effect embodied / executed in the technical scheme.

[0260] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical scheme. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0261] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0262] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. The division of the units is merely logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0263] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0264] In addition, each functional unit in the various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically, or two or more units can be integrated into one unit.

[0265] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), etc.

[0266] The above is merely specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: Applied to a terminal device, comprising: receiving high layer signaling, the high layer signaling including a first parameter set and a second parameter set, the first parameter set corresponding to a first transmission mode of the terminal device, the second parameter set corresponding to a second transmission mode of the terminal device, the first transmission mode being an uplink single transmission mode, and the second transmission mode being an uplink concurrent transmission mode; receiving indication information, wherein the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to indicate that the terminal device switches transmission modes, wherein the switching transmission modes includes switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode; communicating with a network device in the transmission mode indicated by the indication information and the parameter set corresponding to the transmission mode indicated by the indication information.

2. The method of claim 1, wherein, The receiving indication information comprises: receiving a downlink control information (DCI), wherein the DCI includes the indication information.

3. The method of claim 2, wherein: the indication information is a first radio network temporary identifier (RNTI), and the DCI is scrambled by the first RNTI, and the first RNTI is used to indicate that the terminal device switches transmission modes.

4. The method of claim 2, wherein: the indication information is a second RNTI or a third RNTI, and the DCI is scrambled by the second RNTI or the third RNTI, wherein the second RNTI is used to indicate that the terminal device transmits in the first transmission mode, and the third RNTI is used to indicate that the terminal device transmits in the second transmission mode.

5. The method of claim 2, wherein, the DCI includes a first field, and the first field includes the indication information; a first state of the indication information is used to indicate that the terminal device transmits in the first transmission mode, and a second state of the indication information is used to indicate that the terminal device transmits in the second transmission mode; or the indication information is used to indicate that the terminal device switches transmission modes.

6. The method of claim 1, wherein, The receiving indication information comprises: receiving a medium access control element (MAC CE), and the MAC CE includes the indication information.

7. The method of claim 6, wherein, the indication information is one or more parameters included in the first parameter set or one or more parameters included in the second parameter set, when the indication information is one or more parameters included in the first parameter set, the indication information is used to indicate that the terminal device transmits in the first transmission mode corresponding to the first parameter set; and when the indication information is one or more parameters included in the second parameter set, the indication information is used to indicate that the terminal device transmits in the second transmission mode corresponding to the second parameter set.

8. The method of claim 6, wherein, the MAC CE includes a second field, and the second field includes the indication information, The first state of the indication information is used to instruct the terminal device to use the first transmission mode for transmission, and the second state of the indication information is used to instruct the terminal device to use the second transmission mode for transmission. The indication information is used to instruct the terminal device to switch transmission modes.

9. The method according to any one of claims 1 to 8, characterized in that, The method further comprises: determining a parameter set corresponding to the transmission mode indicated by the indication information; when the indication information indicates switching from the first transmission mode to the second transmission mode, or the indication information instructs the terminal device to use the second transmission mode for transmission, the terminal device uses parameters included in the second parameter set to use the second transmission mode for transmission; or when the indication information indicates switching from the second transmission mode to the first transmission mode, or the indication information instructs the terminal device to use the first transmission mode for transmission, the terminal device uses parameters included in the first parameter set to use the first transmission mode for transmission.

10. The method of any one of claims 1-8, wherein the first parameter set includes at least one of a maximum transmit power used by the first transmission mode, uplink reference signal related parameters used by the first transmission mode, physical uplink shared channel related parameters used by the first transmission mode, or physical uplink control channel spatial relation parameters used by the first transmission mode; the second parameter set includes at least one of a maximum transmit power used by the second transmission mode, uplink reference signal related parameters used by the second transmission mode, physical uplink shared channel related parameters used by the second transmission mode, or physical uplink control channel spatial relation parameters used by the second transmission mode.

11. The method according to any one of claims 1 to 8, characterized in that, The uplink single-shot mode is an uplink new radio (NR) multi-antenna single-shot mode, and the uplink concurrent mode is an uplink NR single-antenna and uplink LTE single-antenna concurrent transmission mode.

12. A communication method, comprising: Applied to a network device, comprising: sending high layer signaling, the high layer signaling including a first parameter set and a second parameter set, the first parameter set corresponding to a first transmission mode of a terminal device, and the second parameter set corresponding to a second transmission mode of the terminal device, the first transmission mode being an uplink single-shot mode, and the second transmission mode being an uplink concurrent mode; sending indication information, wherein the indication information is used to indicate one of the first transmission mode or the second transmission mode, or the indication information is used to instruct the terminal device to switch transmission modes, wherein the switching transmission modes include switching from the first transmission mode to the second transmission mode, or switching from the second transmission mode to the first transmission mode, the transmission mode indicated by the indication information and the parameter set corresponding to the transmission mode indicated by the indication information being used for the terminal device to communicate with the network device.

13. The method of claim 12, wherein, The method further comprises: sending downlink control information (DCI), wherein the DCI includes the indication information.

14. The method of claim 13, wherein the indication information is a first radio network temporary identifier (RNTI), and the DCI is scrambled by the first RNTI, and the first RNTI is used to indicate the terminal device to switch transmission mode.

15. The method of claim 13, wherein the indication information is a second RNTI or a third RNTI, and the DCI is scrambled by the second RNTI or the third RNTI, wherein the second RNTI is used to indicate the terminal device to use the first transmission mode for transmission, and the third RNTI is used to indicate the terminal device to use the second transmission mode for transmission. the DCI includes a first field, and the first field includes the indication information, wherein a first state of the indication information is used to indicate the terminal device to use the first transmission mode for transmission, and a second state of the indication information is used to indicate the terminal device to use the second transmission mode for transmission, or the indication information is used to indicate the terminal device to switch transmission mode. the sending the indication information includes: sending a medium access control element (MAC CE) including the indication information. the indication information is one or more parameters included in the first parameter set or one or more parameters included in the second parameter set, wherein when the indication information is one or more parameters included in the first parameter set, the indication information is used to indicate the terminal device to use the first transmission mode corresponding to the first parameter set for transmission, and when the indication information is one or more parameters included in the second parameter set, the indication information is used to indicate the terminal device to use the second transmission mode corresponding to the second parameter set for transmission. the MAC CE includes a second field, and the second field includes the indication information, wherein a first state of the indication information is used to indicate the terminal device to use the first transmission mode for transmission, and a second state of the indication information is used to indicate the terminal device to use the second transmission mode for transmission, or the indication information is used to indicate the terminal device to switch transmission mode.

16. The method of claim 13, wherein, 20. The method of any one of claims 12-19, wherein the first parameter set includes at least one of a maximum transmit power used by the first transmission mode, an uplink reference signal related parameter used by the first transmission mode, a physical uplink shared channel related parameter used by the first transmission mode, or a physical uplink control channel spatial relation parameter used by the first transmission mode, and the second parameter set includes at least one of a maximum transmit power used by the second transmission mode, an uplink reference signal related parameter used by the second transmission mode, a physical uplink shared channel related parameter used by the second transmission mode, or a physical uplink control channel spatial relation parameter used by the second transmission mode. ​ ​ 17. The method of claim 12, wherein, ​ ​ 18. The method of claim 17, wherein, ​ ​ ​ 19. The method of claim 17, wherein, ​ ​ ​ ​ ​ ​ 21. The method of any one of claims 12-19, wherein, the uplink single transmission mode is an uplink NR multi-antenna single transmission mode, and the uplink concurrent transmission mode is an uplink NR single antenna and uplink LTE single antenna parallel transmission mode.

22. A communications device, characterized by The communication apparatus is an apparatus applied to a terminal device, and the communication apparatus comprises units or modules for performing the method of any one of claims 1-11.

23. A communications device, characterized by The communication apparatus is an apparatus applied to a network device, and the communication apparatus comprises units or modules for performing the method of any one of claims 12-21.

24. A communications device, characterized by The apparatus comprises at least one processor coupled with at least one memory: The at least one processor is configured to execute the computer program or instructions stored in the at least one memory, so that the apparatus performs the method of any one of claims 1-11, or the method of any one of claims 12-21.

25. A computer readable storage medium, characterized in that, The computer readable storage medium stores computer programs or instructions, which, when read and executed by a computer, cause the computer to perform the method of any one of claims 1-11, or the method of any one of claims 12-21.

26. A computer program product, characterised in that, The computer readable storage medium stores computer programs or instructions, which, when read and executed by a computer, cause the computer to perform the method of any one of claims 1-11, or the method of any one of claims 12-21.

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