Communication methods, devices and systems

Abstract

This application provides a communication method, apparatus, and system. The method includes: a terminal device receiving configuration information, the configuration information being used to configure the terminal device to communicate on K cells, where K is a positive integer; the terminal device receiving first indication information, the first indication information indicating a first capability, the first capability being related to the configuration information, and the first capability being at least one of a first frequency band combination, a first characteristic set, or a first carrier characteristic set. The terminal device can obtain accurate communication configuration in a timely manner, avoiding uplink and downlink reception impairments, bit errors, and other anomalies caused by inaccurate alignment of this information between the network device and the terminal device, thereby improving communication quality.

Description

Technical Field

[0001] This application relates to the field of communications. In particular, it relates to a communication method, apparatus, and system. Background Technology

[0002] In wireless communication systems, terminals typically report their capabilities first, and the base station then issues wireless configurations to the terminal based on these capabilities to support services. In 5G, terminal capabilities are highly complex, encompassing user equipment (UE) level, band level, feature set (FS) level, feature set per component carrier (FSPC) level, and band combination (BC) level capabilities. While the reported capabilities are very complex, current technology prevents terminals from accurately determining which reported capabilities the base station bases are using to determine the configuration. When the terminal's expected network configuration differs from the network's actual configuration, it can lead to impaired uplink and downlink reception, bit errors, and other anomalies, thus affecting communication. Summary of the Invention

[0003] This application provides a communication method, apparatus, and system that can improve communication quality.

[0004] Firstly, a communication method is provided. This method can be executed by a terminal device, or by a chip or circuit used in the terminal device; this application does not limit this. For ease of description, the following explanation uses execution by a terminal device as an example.

[0005] The method includes: a terminal device receiving configuration information, the configuration information being used to configure the terminal device to communicate on K cells, where K is a positive integer; the terminal device receiving first indication information, the first indication information indicating a first capability, the first capability being related to the configuration information, and the first capability being at least one of a first frequency band combination, a first characteristic set, or a first carrier characteristic set.

[0006] In some implementations, the K cells can be replaced by K frequency bands, and the configuration information is used to configure the dynamic uplink transmission channel switching of the terminal device in the K frequency bands.

[0007] In this method, the terminal device can obtain accurate communication configuration in a timely manner, avoiding uplink and downlink reception impairment, bit errors and other anomalies caused by the inability of the network device and the terminal device to accurately align the information, thereby improving communication quality.

[0008] In some implementations, before receiving the configuration information, the method further includes: the terminal device sending capability information, the capability information including at least one of the following: at least one frequency band combination supported by the terminal device; at least one feature set supported by the terminal device, the feature set including a downlink feature set and / or an uplink feature set, each feature set corresponding to a frequency band entity in a frequency band combination; at least one carrier feature set supported by the terminal device, the carrier feature set including a carrier downlink feature set and / or a carrier uplink feature set, each carrier feature set corresponding to a carrier in a frequency band in a frequency band combination.

[0009] In some implementations, the first capability is the first frequency band combination, the first indication information indicates the identifier of the first frequency band combination, and the first frequency band combination belongs to at least one frequency band combination supported by the terminal device.

[0010] In some implementations, the first capability is the first feature set, the first indication information indicates the index of the first feature set, the index of the first feature set indicates the position of the first feature set in the first feature set combination, the first feature set combination is the feature set combination corresponding to the first frequency band combination, and the first feature set is a subset of at least one feature set supported by the terminal device.

[0011] In some implementations, the first capability is the first carrier characteristic set, the first indication information indicates the identifier of the first carrier characteristic set, the first carrier characteristic set is a first carrier downlink characteristic set and / or a first carrier uplink characteristic set, and the first carrier characteristic set is a subset of at least one carrier characteristic set supported by the terminal device.

[0012] In some implementations, the first carrier characteristic set belongs to a first carrier characteristic set combination, which includes L carrier characteristic sets, where L is a positive integer. The first carrier characteristic set combination corresponds to a first cell, and the first cell belongs to the K cells.

[0013] In some implementations, the K cells correspond one-to-one with K carrier characteristic set combinations, and each of the K carrier characteristic set combinations includes one or more carrier characteristic sets.

[0014] In some implementations, L carrier characteristic sets correspond one-to-one with L carriers, where the L carriers are candidate carriers used for communication in the first cell, and the L carrier characteristic sets belong to a first carrier characteristic set combination, which corresponds to the first cell.

[0015] In some implementations, the L carrier uplink characteristic sets are arranged in a first order, where the first order is the arrangement order of the L carriers in the first cell, and / or the L carrier characteristic sets are L downlink carrier characteristic sets, where the L carrier downlink characteristic sets are arranged in a second order, where the second order is the arrangement order of the L downlink carriers in the first cell.

[0016] In this implementation, the carrier characteristic set is arranged according to the order of the carriers. Based on this order, the carrier characteristic set corresponding to a certain carrier can be determined without any other indication, thus saving indication overhead.

[0017] In some implementations, the first indication information also indicates the first carrier corresponding to the first carrier characteristic set.

[0018] In some implementations, the capability information is first capability information, which includes a first identifier, used to indicate that the capability information is first capability information.

[0019] In this method, the first identifier carried in the capability information enables the network device and the terminal device to determine the same capability information, avoiding the terminal device's inability to determine the corresponding capability information among multiple capability information, and improving the accuracy of the terminal in determining the first capability.

[0020] Secondly, a communication method is provided, which can be executed by a network device, or by a chip or circuit used in a network device, without limitation herein. For ease of description, the following explanation uses execution by a network device as an example.

[0021] The method includes: a network device determining configuration information based on a first capability, wherein the first capability is at least one of a first frequency band combination, a first feature set, or a first carrier feature set, the configuration information being used to configure a terminal device to communicate on K cells, wherein K is a positive integer; the network device sending the configuration information; and the network device sending first indication information, the first indication information indicating the first capability.

[0022] In some implementations, before sending the configuration information, the method further includes: the network device receiving capability information, the capability information including at least one of the following: at least one frequency band combination supported by the terminal device; at least one feature set supported by the terminal device, the feature set including a downlink feature set and / or an uplink feature set, each feature set corresponding to a frequency band entity in a frequency band combination; at least one carrier feature set supported by the terminal device, the carrier feature set including a carrier downlink feature set and / or a carrier uplink feature set, each carrier feature set corresponding to a carrier in a frequency band in a frequency band combination.

[0023] In some implementations, the first capability is the first frequency band combination, the first indication information indicates the identifier of the first frequency band combination, and the first frequency band combination belongs to at least one frequency band combination supported by the terminal device.

[0024] The identifier of the first frequency band combination can indicate its position within the at least one frequency band combination. The at least one frequency band combination can be presented in the form of a list or set. For example, the identifier of the first frequency band combination can be an index in a list of frequency band combinations. Each frequency band combination in the list can correspond to an identifier (or index). The identifiers can be sequentially incremented according to the order of the entries in the frequency band combination table; for example, the identifier for the first frequency band combination is 1, the identifier for the second frequency band combination is 2, and so on.

[0025] Optionally, the frequency band combination list is a list of frequency band combinations that support uplink transmit channel switching, and the identifier of the first frequency band combination indicates the position of the first frequency band combination in the list of frequency band combinations that support uplink transmit channel switching.

[0026] Optionally, in a Dual Connection (DC) scenario, the frequency band combination list is the list of frequency band combinations reported by the terminal device in UE-MRDC-Capability. In an NR scenario, the frequency band combination list is the list of frequency band combinations reported by the terminal device in UE-NR-Capability.

[0027] In some implementations, the first capability is the first feature set, the first indication information indicates the index of the first feature set, the index of the first feature set indicates the position of the first feature set in the first feature set combination, the first feature set combination is the feature set combination corresponding to the first frequency band combination, and the first feature set is a subset of at least one feature set supported by the terminal device.

[0028] In some implementations, the first capability is the first carrier characteristic set, the first indication information indicates the identifier of the first carrier characteristic set, the first carrier characteristic set is a first carrier downlink characteristic set and / or a first carrier uplink characteristic set, and the first carrier characteristic set is a subset of at least one carrier characteristic set supported by the terminal device.

[0029] In some implementations, the first carrier characteristic set belongs to a first carrier characteristic set combination, which includes L carrier characteristic sets, where L is a positive integer. The first carrier characteristic set combination corresponds to a first cell, and the first cell belongs to the K cells.

[0030] In some implementations, the K cells correspond one-to-one with K carrier characteristic set combinations, and each of the K carrier characteristic set combinations includes one or more carrier characteristic sets.

[0031] In some implementations, L carrier characteristic sets correspond one-to-one with L carriers, where the L carriers are candidate carriers used for communication in the first cell, and the L carrier characteristic sets belong to a first carrier characteristic set combination, which corresponds to the first cell.

[0032] In some implementations, the L carrier uplink characteristic sets are arranged in a first order, where the first order is the arrangement order of the L carriers in the first cell, and / or the L carrier characteristic sets are L downlink carrier characteristic sets, where the L carrier downlink characteristic sets are arranged in a second order, where the second order is the arrangement order of the L downlink carriers in the first cell.

[0033] In some implementations, the first indication information also indicates the first carrier corresponding to the first carrier characteristic set.

[0034] In some implementations, the method further includes: the capability information is first capability information, the capability information includes a first identifier, and the first identifier is used to indicate that the capability information is first capability information.

[0035] It should be understood that the second aspect is the implementation method on the network device side corresponding to the first aspect. The relevant explanations, supplements, possible implementation methods and descriptions of beneficial effects of the first aspect also apply to the second aspect, and will not be repeated here.

[0036] Thirdly, a communication method is provided. This method can be executed by a terminal device, or by a chip or circuit used in a terminal device; this application does not limit this. For ease of description, the following explanation uses execution by a terminal device as an example.

[0037] The method includes: a terminal device receiving configuration information, the configuration information being used to configure the terminal device to switch between uplink transmit channels or downlink receive channels between frequency bands of a first frequency band pair, the first frequency band pair including at least two frequency bands, and the configuration information including at least one of the following:

[0038] The first frequency band is an identifier for the included frequency bands;

[0039] The switching option for switching transmission channels between the frequency bands of the first frequency band pair;

[0040] The switching time of the transmission channel switching between the frequency bands of the first frequency band pair;

[0041] The number of transmission channels for switching transmission channels between the frequency bands of the first frequency band pair;

[0042] The identifier of the second frequency band affected by the switching of the transmission channel between the frequency bands of the first frequency band pair.

[0043] In this method, by indicating the switching time of the transmission channel switching of the first frequency band pair in the configuration information through the network, inconsistencies in the understanding of the transmission channel switching between the terminal and the network can be avoided. This prevents the terminal from being unable to correctly decode the data block sent by the network when the switching time between the first frequency band pairs expected by the terminal is less than the switching time when the network dynamically schedules the transmission channel switching, thereby causing bit errors during the transmission channel switching and improving communication reliability.

[0044] The identifier of the frequency band included in the first band pair indicates the position of the frequency band supporting dynamic switching within at least one band pair. The at least one band pair can be in the form of a list or a set. For example, the identifier of the frequency band included in the first band pair can be the identifier (or index) of the frequency band included in the first band pair in the list of band pairs, used to indicate the position of the frequency band included in the first band pair in the list of band pairs. The identifier can be incremented sequentially according to the order of the entries in each band combination table; for example, the identifier for the first band combination is 1, the identifier for the second band combination is 2, and so on.

[0045] Optionally, the frequency band combination list is a list of frequency band combinations that support uplink transmit channel switching, and the identifier of the first frequency band combination indicates the position of the first frequency band combination in the list of frequency band combinations that support uplink transmit channel switching.

[0046] Optionally, in a Dual Connection (DC) scenario, the above frequency band combination list is the frequency band combination list reported by the terminal device in UE-MRDC-Capability. In an NR scenario, the above frequency band combination list is the frequency band combination list reported by the terminal device in UE-NR-Capability.

[0047] In some implementations, when the transmission channel is switched to an uplink transmit channel switch, the second frequency band is the frequency band affected by the uplink transmit channel switch between the frequency bands of the first frequency band pair for downlink reception.

[0048] In some implementations, when the transmission channel is switched to uplink transmit channel switching, the switching option for the transmission channel switching between the frequency bands of the first frequency band pair is to switch uplink transmission switchedUL, or dual uplink transmission dualUL; or,

[0049] When the transmission channel is switched to downlink receive channel switching, the switching option for the transmission channel switching between the frequency bands of the first frequency band pair is to switch downlink transmission switchedDL or dual downlink transmission dualDL.

[0050] In some implementations, before receiving configuration information, the method further includes: the terminal device sending capability information, the capability information including the transmission channel switching capability supported by the terminal device.

[0051] Fourthly, a communication method is provided, which can be executed by a network device, or by a chip or circuit used in a network device, without limitation herein. For ease of description, the following explanation uses execution by a network device as an example.

[0052] The network device sends configuration information, which is used to configure the terminal device to switch between uplink transmit channels or downlink receive channels between frequency bands of a first frequency band pair. The first frequency band pair includes at least two frequency bands, and the configuration information includes at least one of the following:

[0053] The first frequency band is an identifier for the included frequency bands;

[0054] The switching option for switching transmission channels between the frequency bands of the first frequency band pair;

[0055] The switching time of the transmission channel switching between the frequency bands of the first frequency band pair;

[0056] The number of transmission channels for switching transmission channels between the frequency bands of the first frequency band pair;

[0057] The identifier of the second frequency band affected by the switching of the transmission channel between the frequency bands of the first frequency band pair.

[0058] In some implementations, when the transmission channel is switched to an uplink transmit channel switch, the second frequency band is the frequency band affected by the uplink transmit channel switch between the frequency bands of the first frequency band pair for downlink reception.

[0059] In some implementations, when the transmission channel is switched to uplink transmit channel switching, the switching option for the transmission channel switching between the frequency bands of the first frequency band pair is to switch uplink transmission switchedUL, or dual uplink transmission dualUL; or

[0060] When the transmission channel is switched to downlink receive channel switching, the switching option for the transmission channel switching between the frequency bands of the first frequency band pair is to switch downlink transmission switchedDL or dual downlink transmission dualDL.

[0061] In some implementations, the method further includes the following before sending the configuration information:

[0062] The network device receives capability information, which includes the capability of the terminal device to switch transmission channels; the network device determines the configuration information based on the capability information.

[0063] It should be understood that the fourth aspect is the implementation method on the network device side corresponding to the third aspect. The relevant explanations, supplements, possible implementation methods and descriptions of beneficial effects of the third aspect also apply to the fourth aspect, and will not be repeated here.

[0064] Fifthly, embodiments of this application provide a communication device including a transceiver unit and a processing unit. The communication device is used to perform the method of the first aspect, or the third aspect, or any possible manner of the first aspect, or any possible manner of the third aspect, or all possible manner of the first aspect, or all possible manner of the third aspect.

[0065] In a sixth aspect, embodiments of this application provide a communication device including a transceiver unit and a processing unit, the communication device being used to perform the method of the second aspect, or the fourth aspect, or any possible mode of the second aspect, or any possible mode of the fourth aspect, or all possible modes of the second aspect, or all possible modes of the fourth aspect.

[0066] In a seventh aspect, embodiments of this application provide a communication device, including an interface circuit and a processor. The interface circuit is used to implement the functions of the transceiver module in the fifth aspect, and the processor is used to implement the functions of the processing module in the fifth aspect.

[0067] Eighthly, embodiments of this application provide a communication device, including an interface circuit and a processor. The interface circuit is used to implement the functions of the transceiver module in the sixth aspect, and the processor is used to implement the functions of the processing module in the sixth aspect.

[0068] In a ninth aspect, embodiments of this application provide a computer-readable medium storing program code for execution by a terminal device, the program code including instructions for performing a method of the first aspect, or, the third aspect, or, any possible manner of the first aspect, or, any possible manner of the third aspect, or, all possible manner of the first aspect, or, all possible manner of the third aspect.

[0069] In a tenth aspect, embodiments of this application provide a computer-readable medium storing program code for execution by a network device, the program code including instructions for performing a method according to the second aspect, or the fourth aspect, or any possible manner of the second aspect, or any possible manner of the fourth aspect, or all possible manner of the second aspect, or all possible manner of the fourth aspect.

[0070] Eleventhly, a computer program product storing computer-readable instructions is provided, which, when executed on a computer, causes the computer to perform a method according to the first aspect, or the third aspect, or any possible manner of the first aspect, or any possible manner of the third aspect, or all possible manner of the first aspect, or all possible manner of the third aspect.

[0071] In a twelfth aspect, a computer program product storing a computer-readable instruction is provided, which, when executed on a computer, causes the computer to perform the methods described in the second aspect, or the fourth aspect, or any possible manner in the second aspect, or any possible manner in the fourth aspect, or all possible manner in the second aspect, or all possible manner in the fourth aspect.

[0072] In a thirteenth aspect, a communication system is provided, the communication system including means having a method for implementing the first aspect, or, the third aspect, or, any possible mode of the first aspect, or, any possible mode of the third aspect, or, all possible modes of the first aspect, or, all possible modes of the third aspect, and means of various possible designs.

[0073] In a fourteenth aspect, a processor is provided for coupling with a memory for performing the methods described in the first aspect, or the third aspect, or any possible manner in the first aspect, or any possible manner in the third aspect, or all possible manner in the first aspect, or all possible manner in the third aspect.

[0074] In a fifteenth aspect, a processor is provided for coupling with a memory for performing the method of the second aspect, or the fourth aspect, or any possible manner of the second aspect, or any possible manner of the fourth aspect, or all possible manner of the second aspect, or all possible manner of the fourth aspect.

[0075] In a sixteenth aspect, a chip system is provided, comprising a processor and further comprising a memory for executing computer programs or instructions stored in the memory, such that the chip system implements any one of the first, second, third, or fourth aspects, and any possible implementation thereof. The chip system may be composed of chips or may include chips and other discrete devices.

[0076] In a seventeenth aspect, a communication method is provided, the method comprising: a network device determining configuration information based on a first capability, the first capability being at least one of a first frequency band combination, a first characteristic set, or a first carrier characteristic set, the configuration information being used to configure a terminal device to communicate on K cells, the K being a positive integer; the network device sending the configuration information to the terminal device; and the network device sending first indication information to the terminal device, the first indication information indicating the first capability.

[0077] Eighteenth aspect, a communication method is provided, the method comprising: a network device sending configuration information to a terminal device, the configuration information being used to configure the terminal device to switch between uplink transmit channels or downlink receive channels between frequency bands of a first frequency band pair, the first frequency band pair comprising at least two frequency bands, the configuration information comprising at least one of the following:

[0078] The first frequency band is an identifier for the included frequency bands;

[0079] The transmission type of the transmission channel switching between the frequency bands of the first frequency band pair;

[0080] The switching time of the transmission channel switching between the frequency bands of the first frequency band pair;

[0081] The identifier of the second frequency band affected by the switching of the transmission channel between the frequency bands of the first frequency band pair. Attached Figure Description

[0082] Figure 1 A system architecture applicable to an embodiment of this application is shown.

[0083] Figure 2 A schematic diagram of a communication method is shown.

[0084] Figure 3 This diagram illustrates the correspondence between a feature set and a frequency band combination.

[0085] Figure 4 A schematic diagram of a communication method is shown.

[0086] Figure 5 Flowcharts of several communication methods are shown.

[0087] Figure 6The flowcharts for two communication methods are shown.

[0088] Figure 7 A flowchart illustrating yet another communication method is shown.

[0089] Figure 8 A schematic block diagram of a communication device is shown.

[0090] Figure 9 A schematic block diagram of yet another communication device is shown. Detailed Implementation

[0091] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0092] Figure 1 This is a schematic diagram of the architecture of the communication system 1000 used in an embodiment of this application. Figure 1 As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (such as...). Figure 1 110a and 110b in the above), may also include at least one terminal (such as Figure 1 (Referring to 120a-120j in the original text). Terminals connect wirelessly to the wireless access network (WLAN) equipment, which in turn connects to the core network via wireless or wired connections. The core network equipment and the WLAN equipment can be independent physical devices, or they can integrate the functions of the core network equipment and the logical functions of the WLAN equipment onto the same physical device. Alternatively, a single physical device can integrate some of the functions of both the core network equipment and the WLAN equipment. Terminals and WLAN equipment can be interconnected via wired or wireless connections. Figure 1 This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 It is not shown in the middle.

[0093] Radio access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system; it can also be a module or unit that performs some of the functions of a base station, for example, it can be a central unit (CU) or a distributed unit (DU). Here, the CU performs the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also perform the functions of the service data adaptation protocol (SDAP); the DU performs the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also perform some or all of the physical layer functions. For specific descriptions of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). Wireless access network equipment can be macro base stations (such as...) Figure 1 110a in the text), can also be a micro base station or an indoor station (such as... Figure 1 110b) in the text can also be a relay node or a donor node, etc. The embodiments of this application do not limit the specific technology or device form used in the wireless access network equipment. For ease of description, the following description uses a base station as an example of a wireless access network device.

[0094] A terminal can also be called a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal. The following description uses the terminal as an example of a wireless terminal device.

[0095] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.

[0096] The roles of base stations and terminals can be relative, for example, Figure 1 The helicopter or drone 120i can be configured as a mobile base station. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol; in this case, 120i is also a base station relative to 110a. Therefore, both base stations and terminals can be collectively referred to as communication devices. Figure 1 The 110a and 110b in the text can be referred to as communication devices with base station functions. Figure 1 The 120a-120j in the text can be referred to as communication devices with terminal functions.

[0097] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0098] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0099] The technical solutions provided in this application can be applied to wireless communication between communication devices. Wireless communication between communication devices can include: wireless communication between a base station and a terminal, wireless communication between base stations, and wireless communication between terminal devices. In this application, the term "wireless communication" can also be abbreviated as "communication," and the term "communication" can also be described as "data transmission," "information transmission," or "transmission."

[0100] It is understood that in the embodiments of this application, the physical downlink share channel (PDSCH), physical downlink control channel (PDCCH), and physical uplink share channel (PUSCH) are only examples of downlink data channel, downlink control channel, and uplink data channel, respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of this application do not limit this.

[0101] In wireless communication systems, terminals typically report their capabilities first, and the base station then issues wireless configurations to the terminal for carrying services based on these capabilities. In 5G, terminal capabilities are highly complex, including UE-level, BAND-level, Feature Set (FS)-level, Feature Set Per Component-Carrier (FSPC)-level, and Band Combination (BC)-level capabilities. A single BC contains multiple bands, each band can have various FS-level capabilities, and each FS can contain multiple FSPC capabilities. There are diverse BC types, with each type supporting a maximum of 65,536 BCs. The BC type can be a BC for NR Standalone (SA) (exemplary, reported in the suppliedBandCombinationList element in UE-NR-Capability), a BC for MR-DC (exemplary, reported in the suppliedBandCombinationList element in UE-MRDC-Capability), or a BC for uplink tethering (exemplary, reported in the supportedBandCombinationList-UplinkTxSwitch element).

[0102] When configuring carrier aggregation or dual connectivity, the base station will send configurations to the terminal based on the capabilities of the carrier aggregation (BC) reported by the terminal, as well as the terminal-level and band-level capabilities. For example, for dynamic uplink transmit switching (Uplink Txswitching), the terminal will report the BCs that support uplink transmit switching. Each BC for uplink transmit switching includes at least two frequency bands. The terminal will also report the switching time between the pair of frequency bands before and after the switch, during which the terminal will not perform uplink transmission. The terminal will also report switching options (switch UL for uplink or dual uplink UL) and other capabilities. When configuring dynamic uplink antenna switching, the base station will indicate the frequency band for uplink transmit switching in the Radio Resource Control (RRC) configuration and dynamically schedule the uplink transmit switching through underlying signaling (such as downlink control information (DCI)). The terminal determines how to perform uplink antenna switching based on the RRC configuration information. However, since the terminal may report multiple BCs, and multiple BCs may contain the same frequency band pairs that support uplink transmission handover, but these frequency band pairs have different handover times in different BCs, the terminal needs to align with the base station to determine which BC capability the base station configures for uplink transmission handover. This is to avoid a situation where the BC capability applied when the terminal expects the base station to issue the configuration is inconsistent with the BC capability actually applied when the base station is configured. This would result in the terminal expecting the handover time scheduled by the base station to be less than the handover time actually used by the base station, thus preventing the terminal from correctly decoding data during dynamic handover.

[0103] For example, considering the protection of the underlying hardware, the terminal needs to perform certain capability verification on the base station configuration, that is, to ensure that the base station configuration meets the capabilities reported by the terminal. Therefore, the terminal also needs to know which BC, FS, or FSPC the base station is based on to issue the configuration.

[0104] The BC capabilities reported by the terminal are very complex, and it is impossible to accurately match a unique BC through downlink signaling configuration. The following example illustrates this simply.

[0105] Terminal reporting capabilities:

[0106]

[0107] The carrier aggregation (CA) combination configured for the base station is: PCell (bandA) + SCell#1 (bandB) + SCell#2 (bandC).

[0108] Since the CA combination {bandA+bandB+bandC} configured by the base station can be obtained from BC1 and BC2 mentioned above, the base station can configure the CA combination {bandA+bandB+bandC} according to the capability of BC#1 or the capability of BC#2. The terminal cannot uniquely determine which BC capability the base station issued the configuration based on, and therefore cannot align the uplink transmission handover time with the base station, which will lead to impaired uplink and downlink reception and cause anomalies such as bit errors.

[0109] In view of this, this application proposes a communication method that enables the terminal to accurately obtain the base station configuration and avoids affecting communication.

[0110] It should be understood that the transmitter (TX) in this application, or simply the radio frequency (RF) transmitter, is a physical concept. The transmitter receives baseband signals from the baseband chip, performs RF processing (such as up-conversion, amplification, and filtering) on ​​the baseband signals to obtain RF signals, and finally radiates these RF signals into space through an antenna. Specifically, the transmitter may include one or more electronic devices such as an antenna switch, antenna tuner, low-noise amplifier (LNA), power amplifier (PA), mixer, local oscillator (LO), and filter. These electronic devices can be integrated into one or more chips as needed. An antenna can sometimes also be considered part of the transmitter.

[0111] In this embodiment, the transmission channel can also be replaced by Tx, antenna, radio frequency, radio frequency chain, transmitting port, number of radio frequency chains, number of transmission layers, maximum number of transmission layers, maximum number of transmission supported layers, receiving channel, or any combination thereof.

[0112] like Figure 2 As shown, the method includes the following steps:

[0113] 210. The base station sends a first indication message to the terminal, and the terminal receives the first indication message accordingly.

[0114] The first indication information indicates a first capability. The first capability is at least one of a first frequency band combination (BC), a first feature set (FS), or a first carrier feature set.

[0115] The first capability can be a first frequency band combination. The first frequency band combination belongs to at least one frequency band combination supported by the terminal.

[0116] For example, the combination of at least one frequency band can be BC1, BC2 and BC3 as described above, with BC1 being the first capability.

[0117] One possible implementation is that the first indication information indicates the identifier of a first frequency band combination. In a set of frequency band combinations, the identifier of a frequency band combination can uniquely identify that combination. For example, the set of frequency band combinations includes frequency band combination A, frequency band combination B, and frequency band combination C, where the identifier of frequency band combination A is 1, the identifier of frequency band combination B is 2, and the identifier of frequency band combination C is 3. When the first indication information indicates the identifier of a frequency band combination in a certain set of frequency band combinations, it can uniquely indicate a specific frequency band combination in that set. For example, if the first indication information indicates identifier 2, it indicates frequency band combination B.

[0118] The aforementioned set of frequency band combinations can also be a frequency band combination list (BC List), which includes multiple frequency band combinations. At least one frequency band combination supported by the terminal can be a frequency band combination list. The frequency band combination list supported by the terminal can be determined from multiple frequency band combination lists. For example, the terminal determines the first frequency band combination from frequency band combination list A, frequency band combination list B, or frequency band combination list C, such as frequency band combination list A. In one possible approach, the terminal selects the corresponding frequency band combination list from multiple frequency band combination lists based on current communication requirements. For example, if the current wireless communication access technology is NR, the terminal determines the first frequency band combination based on a frequency band combination list applicable to NR; if the current wireless communication access technology is MRDC, the terminal determines the first frequency band combination based on a frequency band combination list applicable to MRDC; if the current network is configured for uplink transmission handover, the terminal determines the first frequency band combination based on a frequency band combination list applicable to uplink transmission handover.

[0119] Alternatively, the identifier of the first frequency band combination can indicate its position within the at least one frequency band combination. The at least one frequency band combination can be presented in the form of a list or set. For example, the identifier of the first frequency band combination can be an index in a list of frequency band combinations. Each frequency band combination in the list can correspond to an identifier (or index) indicating its position within the list. The identifiers can increment sequentially according to the order of the frequency band combination entries; for example, the identifier for the first frequency band combination is 1, the identifier for the second frequency band combination is 2, and so on. Different identifiers correspond to different lists of frequency band combinations. In other words, lists of frequency band combinations can also be distinguished by identifiers.

[0120] Optionally, the first indication information may also indicate the identifier of the frequency band combination list. The identifier of the frequency band combination list and the identifier of the frequency band combination can uniquely identify a frequency band combination. For example, frequency band combination list A is identified as A, and includes 10 frequency band combinations identified as 1 to 10; frequency band combination list B is identified as B, and includes 12 frequency band combinations identified as 1 to 12. If the first indication information only indicates the identifier of the frequency band combination, such as 8, then there will be a frequency band combination identified as 8 in both frequency band combination lists. When the first indication information indicates both identifier A and identifier 8, it uniquely indicates the frequency band combination identified as 8 in frequency band combination list A.

[0121] It should be understood that the above identifiers can be interchanged with the indexes. For example, the identifier for the first frequency band combination can be replaced with the index for the first frequency band combination. This application is not limited to this; for example, any method with distinguishing function can be applied to the identifiers of the above frequency band combinations and / or the list of frequency band combinations.

[0122] Optionally, before the base station sends the first indication information, the base station can obtain the terminal's capability information. This capability information can come from the terminal itself, or from other access network devices or core network devices; that is, capability information from the terminal forwarded by other access network devices or core network devices. This capability information includes at least one frequency band combination supported by the terminal. In other words, the terminal reports a list of supported frequency band combinations to the base station.

[0123] It should be understood that the base station that sends the first instruction information and the base station that obtains the terminal capability information can be the same base station or different base stations.

[0124] Optionally, in the EUTRA-NR Dual Connection (EN-DC) scenario, the frequency band combination list is the list of frequency band combinations reported by the terminal device in UE-MRDC-Capability. In the NR scenario, the frequency band combination list is the list of frequency band combinations reported by the terminal device in UE-NR-Capability.

[0125] Optionally, the frequency band combination list is a list of frequency band combinations that support uplink transmit channel switching, and the identifier of the first frequency band combination indicates the position of the first frequency band combination in the list of frequency band combinations that support uplink transmit channel switching.

[0126] The following is an example of the first indication information when the first capability is a combination of first frequency bands.

[0127] An example of the first instruction message is as follows:

[0128] bandCombinationIndex BandCombinationIndex,

[0129] This field indicates the index of the band combination, which is the index of the band combination in the band combination list (BCList) reported by the BC reference terminal configured by the base station in the capability information.

[0130] The frequency band combination list includes the following versions:

[0131] When SA is not configured with uplinkTxSwitching, BCList corresponds to the supportedBandCombinationList in UE-NR-Capability.

[0132] When SA is configured with uplinkTxSwitching, BCList corresponds to supportedBandCombinationList-UplinkTxSwitch-r16 in UE-NR-Capability.

[0133] When MRDC is not configured with uplinkTxSwitching, BCList corresponds to the supportedBandCombinationList in UE-MRDC-Capability.

[0134] When MRDC is configured with uplinkTxSwitching, the BCList corresponds to supportedBandCombinationList-UplinkTxSwitch-r16 in UE-MRDC-Capability.

[0135] That is, BCList is related to NR and MRDC, and also to whether uplinkTxSwitching is configured.

[0136] The aforementioned capability information is the first capability information, which includes a first identifier indicating that the capability information is the first capability information. One possible scenario is that when a terminal updates its capabilities, it triggers the base station to re-query and report the terminal's capabilities. However, the capabilities reported by the terminal may not be promptly sent to other network devices. When the terminal moves between base stations, such as from a first access network device to a second access network device, if the second access network device fails to obtain the latest terminal capability information in a timely manner and uses the capability information before the update, this will result in the frequency band combination determined by the second access network device differing from the frequency band combination determined by the terminal based on the identifier of the frequency band combination indicated in the configuration information. For example, the number or order of frequency band combinations in the frequency band combination list may change, causing the frequency band combination corresponding to the same identifier to change before and after the capability update. For instance, the capability information includes a total of 32 identifiers. The initial identifier for the terminal capability information is 0, and the identifier increases by 1 when the terminal capability changes. Capability containers for different access technologies can correspond to different identifiers.

[0137] The following are possible implementations of the capability information reported by the terminal to the base station:

[0138] UE-NR-Capability::=SEQUENCE{

[0139] ...

[0140] versionIndication INTEGER(0…31), UE capability version information.

[0141] }

[0142] or,

[0143] UE-MRDC-Capability::=SEQUENCE{

[0144] ...

[0145] versionIndication INTEGER(0…31), UE capability version information.

[0146] }

[0147] Here, versionIndication is an example of the first identifier.

[0148] The first ability can also be the first set of characteristics.

[0149] In this context, "feature" refers to the functions and characteristics of communication resources used to transmit data in a wireless communication system, in order to meet specific communication needs.

[0150] For example, a feature set can encompass multiple aspects, such as modulation scheme, coding method, modulation rate, spectral efficiency, and multiple access techniques. These features and characteristics are crucial for ensuring communication quality, maximizing bandwidth utilization, and providing different qualities of service.

[0151] Optionally, this feature can be a carrier characteristic or a characteristic of the frequency bands in a band combination. That is, the feature set can be a carrier characteristic set or it can include the characteristic set of the frequency bands in a band combination. In this paper, for the sake of distinction, the feature set corresponds to the set of capability parameters of a band entry in a band combination, and the carrier characteristic set (Feature Set PerCC) corresponds to the set of capability parameters of a carrier on a band entry in a band combination.

[0152] The first feature set belongs to at least one feature set supported by the terminal. Alternatively, the first feature set is a subset of at least one feature set supported by the terminal. Each feature set in this at least one feature set corresponds to a band entry in a band combination (BC).

[0153] Figure 3 This diagram illustrates the correspondence between a feature set and a frequency band combination.

[0154] As shown in the figure, a frequency band combination BC1 includes three frequency band entities: band A, band B, and band C. Each frequency band entity corresponds to at least one feature set. For example, band A corresponds to FSUL-1 (feature set uplink, FSUL) and FSDL-5 (feature set downlink, FSDL), or FSUL-6 and FSDL-10; band B corresponds to FSUL-2 and FSDL-2, or FSUL-2 and FSDL-7, or FSUL-2 and FSDL-8; band C corresponds to FSUL-0 and FSDL-3, or FSUL-0 and FSDL-8, or FSUL-0 and FSDL-0.

[0155] FSDL stands for downlink feature set, which can be used for downlink transmission. FSUL stands for uplink feature set, which can be used for uplink transmission. The uplink and downlink feature sets corresponding to each frequency band entity are collectively referred to as feature sets. That is, the first feature set includes both uplink and downlink feature sets. FSUL-1 and FSDL-5 mean that in the first line of FS, the uplink FS and downlink FS of band A are identified as 1 and 5 in the FSUL and FSDL sets, respectively.

[0156] For BC1, its corresponding feature set combination includes three rows of FS (Feature Sets). Each row of FS includes at least one pair of downlink / uplink feature sets, and each pair of downlink / uplink feature sets corresponds to a frequency band entity in BC1. For example, the first row includes feature sets FSUL-1 and FSDL-5, FSUL-2 and FSDL-2, and FSUL-0 and FSDL-3, corresponding to band A, band B, and band C, respectively. A BC can have multiple rows of FS, each corresponding to different feature sets for each frequency band entity. For example, in the second row, the feature sets are FSUL-6 / FSDL-10, FSUL-2 / FSDL-7, and FSUL-0 / FSDL-8, corresponding to another set of capabilities for band A, band B, and band C, respectively.

[0157] One possible implementation is that the first indication information indicates the index (or identifier) ​​of the first feature set, which indicates the position of the first feature set in the first feature set combination. The first feature set combination is the feature set combination corresponding to the first frequency band combination. That is, the first feature set is used to determine a pair of downlink / uplink feature sets corresponding to each frequency band in the frequency band combination. For example, if the index of the first feature set is 1, it indicates that the feature sets corresponding to band A in BC#1 are FSUL-1 and FSDL-5, the feature sets corresponding to band B are FSUL-2 and FSDL-2, and the feature sets corresponding to band C are FSUL-0 and FSDL-3. Or, when the first indication information indicates index 1, it indicates the first row FS.

[0158] It should be understood that the feature set in the above example includes both downlink and uplink feature sets. However, it is not limited to this; for example, the feature set may include either a downlink feature set or an uplink feature set. That is, the feature set in this application includes both uplink and / or downlink feature sets.

[0159] Specifically, an example of the first instruction message is as follows:

[0160] featureSetEntryIndex

[0161] This field indicates which line of the FS in the FSC corresponding to the BC is referenced by the base station's FS. That is, the first indication information indicates the position of the first feature set within the first feature set combination. Further, the first capability may be a first carrier feature set (Feature set per CC). This first carrier feature set is a subset of at least one carrier feature set supported by the terminal. The first carrier feature set is a first carrier downlink feature set and / or a first carrier uplink feature set.

[0162] The first carrier characteristic set belongs to the first carrier characteristic set combination. This first carrier characteristic set combination includes L carrier characteristic sets, where L is a positive integer, and the first carrier characteristic set combination corresponds to the first cell. The first cell is the cell where the terminal is configured for communication. In other words, the first cell is the serving cell of the terminal. The terminal may have multiple cells configured for communication, such as K, where K is a positive integer. The first cell belongs to one of these K cells.

[0163] These K cells correspond one-to-one with K carrier characteristic set combinations. Each carrier characteristic set combination includes one or more carrier characteristic sets.

[0164] One possible approach is to arrange each of the K carrier characteristic set combinations in a preset order, which is the arrangement order of the K cells. For example, if K is 3, the three cells are arranged in the order of cell A, cell B, and cell C, and the three carrier characteristic set combinations are carrier characteristic set combination A, carrier characteristic set combination B, and carrier characteristic set combination C, respectively, where carrier characteristic set combination A corresponds to cell A, carrier characteristic set combination B corresponds to cell B, and carrier characteristic set combination C corresponds to cell C. Alternatively, the three cells are arranged in the order of PCell, SCell#1, and SCell#2, and the three carrier characteristic set combinations are carrier characteristic set combination A, carrier characteristic set combination B, and carrier characteristic set combination C, respectively, corresponding to PCell, SCell#1, and SCell#2.

[0165] The order in which the cells are arranged can be primary cells first, followed by secondary cells. The order in which the secondary cells are arranged can be either ascending order (i.e., arranged in ascending order according to the cell index) or descending order (i.e., arranged in descending order according to the cell index) as configured in the network.

[0166] Another possible approach is to have L carrier characteristic sets corresponding one-to-one with L carriers, which are candidate carriers used for communication in the first cell. In other words, these L carriers are configured for terminal communication in the first cell. The terminal may use some of these carriers, or all of the L carriers, for communication in the first cell. For example, if a cell corresponds to two uplink carriers, a supplementary uplink (UL) and a normal uplink (NUL), then the carrier characteristic set combination for that cell includes two carriers, corresponding one-to-one with NUL and SUL.

[0167] The aforementioned L carrier characteristic sets belong to the first carrier characteristic set combination, which corresponds to the first cell. That is, the first cell corresponds to the carrier characteristic set combination, which includes multiple carrier characteristic sets, each corresponding one-to-one with a specific carrier. In other words, this carrier characteristic set is per CC level.

[0168] For example, if L is 3, and the three carriers are CC1, CC2, and CC3, the first carrier characteristic set combination includes three carrier characteristic sets: carrier characteristic set 1, carrier characteristic set 2, and carrier characteristic set 3. Carrier characteristic set 1 corresponds to CC1, carrier characteristic set 2 corresponds to CC2, and carrier characteristic set 3 corresponds to CC3. This correspondence can also be understood as the carrier characteristic set being a set of characteristics of the carrier. For example, carrier characteristic set 1 is the characteristic set of CC1, indicating the function or characteristics of CC1.

[0169] One possible implementation is that the carrier characteristic set can be either an uplink carrier characteristic set or a downlink carrier characteristic set. The L uplink carrier characteristic sets are arranged in a first order, which is the arrangement order of the L carriers within the first cell. The L downlink carrier characteristic sets are arranged in a second order, which is the arrangement order of the L downlink carriers within the first cell. In other words, the carrier characteristic sets are arranged according to the carrier order.

[0170] For example, L is 4, the four carriers are carrier B, carrier A, carrier C, and carrier D, and the four carrier characteristic sets are carrier characteristic set 1, carrier characteristic set 2, carrier characteristic set 3, and carrier characteristic set 4. Among them, carrier characteristic set 1 corresponds to carrier B, carrier characteristic set 2 corresponds to carrier A, carrier characteristic set 3 corresponds to carrier C, and carrier characteristic set 4 corresponds to carrier D.

[0171] For another example, if a cell has two uplink carriers, NUL and SUL, and the first order is NUL then SUL, then carrier characteristic set 1 corresponds to NUL and carrier characteristic set 2 corresponds to SUL.

[0172] Optionally, the first indication information may also indicate the carrier corresponding to the first carrier characteristic set, i.e., the first carrier. For example, the first indication information may indicate the index of the first carrier.

[0173] The aforementioned feature set can also be a cell feature set. For example, the first capability is the first cell feature set. The first cell feature set corresponds to the first cell. This feature set has a one-to-one correspondence with each cell. That is, this feature set is at the cell level.

[0174] Optionally, multiple cell characteristic sets can be arranged sequentially, for example, according to the order in which the cells are listed. For instance, if there are 4 cells (cells B, A, C, and D), and four characteristic sets (cell characteristic set 1, cell characteristic set 2, cell characteristic set 3, and cell characteristic set 4), then cell characteristic set 1 corresponds to cell B, cell characteristic set 2 to cell A, cell characteristic set 3 to cell C, and cell characteristic set 4 to cell D.

[0175] These multiple cells can be service cells.

[0176] An example of the first instruction message is as follows:

[0177] featureSetDownlinkPerCCList SEQUENCE(SIZE(1..maxNrofServingCells))OFFeatureSetDownlinkPerCC-Id

[0178] FeatureSetDownlinkPerCC-Id is the identifier (or index) of the downlink carrier feature set corresponding to each cell.

[0179] One possible implementation is that multiple cells are arranged in ascending order of cellIndex, with the smallest cellIndex corresponding to the first feature set in featureSetDownlinkPerCCList.

[0180] In DAPS handover scenarios, the source cell can be listed before the target cell. The source cell is the serving cell before the handover, and the target cell is the cell to which the handover is intended.

[0181] Another example of the first instruction message:

[0182] featureSetUplinkPerCCPerServingCellList SEQUENCE(SIZE(1..maxNrofServingCells))OF FeatureSetUplinkPerCCPerServingCell

[0183] FeatureSetUplinkPerCCPerServingCell is the uplink carrier feature set corresponding to each cell.

[0184] One possible implementation is that the cells are arranged in ascending order of cellIndex, with the smallest cellIndex corresponding to the first feature set in featureSetUplinkPerCCPerServingCellList.

[0185] In DAPS handover scenarios, the source cell is listed before the target cell.

[0186] Another example of the first instruction message:

[0187]

[0188] Among them, FeatureSetUplinkPerCC-Id is the identifier (or index) of the uplink carrier feature set corresponding to the uplink.

[0189] One possible implementation is that the flag is set to 0 to indicate an invalid value, which is used in carrierSwitching or SDL scenarios.

[0190] Cells are arranged in ascending order of cellIndex. All NULs are arranged first, followed by all SULs. The smallest cellIndex corresponds to the first uplink carrier feature set in featureSetUplinkPerCCList.

[0191] In DAPS handover scenarios, the source cell is listed before the target cell.

[0192] Another example of the first instruction message, FeatureSetDownlinkPerCC, is placed in the configuration of each CC:

[0193] ServingCellConfig::=SEQUENCE{

[0194] ...

[0195] featureSetDownlinkPerCC FeatureSetDownlinkPerCC OPTIONAL,--Need M.

[0196] }

[0197] This field indicates the FeatureSetDownlinkPerCC-Id corresponding to the cell.

[0198] Another example of the first indication information, FeatureuplinkPerCC, is placed in each uplink configuration:

[0199] UplinkConfig::=SEQUENCE{

[0200] ...

[0201] featureSetUplinkPerCC FeatureSetUplinkPerCC OPTIONAL,--Need M

[0202] }

[0203] In this context, the FeatureSetDownlinkPerCC-Id value corresponding to the cell is 0, indicating an invalid value, which is used in the carrierSwitching scenario.

[0204] Optionally, the first indication information can be carried in RRC signaling, such as an RRC reconfiguration message or an RRC resume message.

[0205] Optionally, the first indication information can be of the Need M (maintained) type, meaning the terminal needs to save the first indication information. When the first indication information is omitted in the RRC signaling carrying the first indication information, the terminal uses the saved or the last received first indication information.

[0206] 220. The base station determines the configuration information based on the first capability.

[0207] Alternatively, this configuration information is related to the first capability. For example, the first capability is a first frequency band combination, and this configuration information can be related to that first frequency band combination, such as the carrier configuration for CA or DC determined based on the first frequency band combination. For instance, the base station can determine the number of MIMO layers for the configured carrier based on the capabilities of the first frequency band combination; or, based on the first frequency band combination, determine the handover band pair and corresponding handover period in the uplink transmit handover scenario. The configuration information may differ for different frequency band combinations.

[0208] It should be understood that the switching period, switching time, and switching interruption duration in this application can be used interchangeably.

[0209] For example, the first capability is BC1, which includes three frequency bands: band A, band B, and band C. Based on the capabilities of BC1, the base station distributes the CA configuration between CC1 on band A, CC2 on band B, and CC3 on band C. The terminal determines, based on this first capability, that the handover period for uplink transmission handover between carriers in band A and band C is 35µs, and the handover period for uplink transmission handover between carriers in band A and band B is 140µs.

[0210] Optionally, the above configuration information does not include the handover period between frequency band pairs, but the terminal can determine the uplink handover time used when performing uplink transmission handover based on the first indication information, which BC capability the base station issued the configuration based on.

[0211] For another example, carrier characteristic set 1 corresponds to CC1, carrier characteristic set 2 corresponds to CC2, and carrier characteristic set 3 corresponds to CC3. The base station sends the first capability to the terminal as carrier characteristic set 1. Based on this carrier characteristic set 1, the terminal determines that the handover period for transmission handover on CC1 is 35µs.

[0212] In another example, cell feature set 1 corresponds to cell 1, cell feature set 2 corresponds to cell 2, and cell feature set 3 corresponds to cell 3. The base station sends the first capability to the terminal as cell feature set 2. Based on cell feature set 2, the terminal determines that the handover period for transmission within cell 2 is 140µs. For example, the terminal determines that the handover period for transmission on all carriers within cell 2 is 140µs.

[0213] In other words, the base station determines the primary capability, and then determines the relevant configuration for the terminal based on the primary capability. Put simply, the configuration information and the terminal's capabilities are interconnected.

[0214] It should be understood that the aforementioned first instruction information and configuration information can be carried in the same message. For example, this message can be an RRC reconfiguration message or an RRC resume message. Alternatively, the aforementioned first instruction information and configuration information can be carried in different messages.

[0215] 230. The base station sends configuration information to the terminal, and the terminal receives the configuration information accordingly.

[0216] This configuration information indicates the configuration determined by the base station for the terminal in step 220 based on the first capability. Refer to the description of step 220 for the configuration information.

[0217] The terminal can communicate with the base station in the serving cell based on this configuration information.

[0218] For example, the message can be an RRC reconfiguration message, an RRC restore message, or an RRC connection reconfiguration message.

[0219] For example, this configuration information can be carried in RRCmobilityFromEUTRACommand, such as in the NR target access technology capability container message NR targetRAT-MessageContainer.

[0220] In this method, the terminal can obtain accurate communication configuration in a timely manner, avoiding uplink and downlink reception impairment, bit errors and other anomalies caused by the inability of the base station and the terminal to accurately align the information, thereby improving communication quality.

[0221] This application also proposes a communication method, such as... Figure 4 As shown, the method includes the following steps:

[0222] 410. The terminal sends capability information to the base station, and the base station receives the capability information accordingly.

[0223] Capability information includes the terminal's ability to switch transmission channels.

[0224] For example, the terminal reports two frequency band combinations BC#1 and BC#2, where BC#1 includes frequency bands {bandA+bandB+bandC+bandD} and BC#2 includes frequency bands {bandA+bandB+bandC+bandD}. The uplink transmission switching frequency band pairs reported in BC#1 and BC#2, as well as the switching time between frequency band pairs, can be shown in the table below.

[0225]

[0226]

[0227] It should be understood that this table is only an example, such as the correspondence between switching time, frequency band pairs, and frequency band combinations in the table.

[0228] 420. The base station determines the configuration information based on the capability information.

[0229] The configuration information is used to configure the terminal to switch between uplink transmit channels or downlink receive channels between the frequency bands of the first frequency band pair.

[0230] In this application, uplink transmit channel (Tx chain) handover can be replaced with uplink transmit (Tx) handover. Uplink transmit handover can refer to dynamic uplink transmit handover, that is, uplink transmit handover that combines RRC configuration and dynamic scheduling of low-layer signaling.

[0231] The first frequency band pair includes at least two frequency bands. For example, the first frequency band pair includes a first frequency band and a second frequency band, where the first frequency band is the frequency band where the uplink transmission channel is located before the channel switch, and the second frequency band is the frequency band where the uplink transmission channel is located after the channel switch, wherein the first frequency band is different from the second frequency band. The first frequency band pair belongs to a first frequency band combination, and the first frequency band combination may also include a second frequency band pair. Alternatively, the first frequency band combination includes at least one frequency band pair.

[0232] The first frequency band pair can also include more than two frequency bands. For example, the first frequency band pair includes four frequency bands. The first frequency band includes two frequency bands, which are the frequency bands where the uplink transmission channel was located before the channel switch. The second frequency band includes two frequency bands, which are the frequency bands where the uplink transmission channel is located after the channel switch. The frequency bands included in the first frequency band and the frequency bands included in the second frequency band can be different or partially the same. For example, the terminal has two transmission channels. Before the channel switch, the transmission channels were located in band A and band B, respectively. After the switch, the transmission channels are located in band C and band D, respectively. Or, before the switch, the transmission channels were located in band A and band B, respectively. After the switch, the transmission channels are located in band A and band C, respectively.

[0233] To give another example, the first frequency band includes three frequency bands. The first frequency band includes two frequency bands, which are the frequency bands where the uplink transmission channel was located before the channel switch; the second frequency band includes one frequency band, which is the frequency band where the uplink transmission channel is located after the channel switch.

[0234] For example, the first frequency band combination includes frequency band pair A and frequency band pair B, where frequency band pair A includes frequency band 1 and frequency band 2, and frequency band pair B includes frequency band 3 and frequency band 4.

[0235] The identifier of the frequency band included in the first band pair indicates the position of the frequency band supporting dynamic switching in at least one band pair. The at least one band pair can be in the form of a list or a set. For example, the identifier of the frequency band included in the first band pair can be the identifier (or index) of the frequency band included in the first band pair in the list of band pairs, used to indicate the position of the frequency band included in the first band pair in the list of band pairs.

[0236] The above configuration information includes at least one of the following:

[0237] The first frequency band is identified by the frequency bands it includes;

[0238] The switching option for switching transmission channels between frequency bands of the first frequency band pair (UplinkTxSwitchingOption);

[0239] The switching time for the transmission channel switching between frequency bands of the first frequency band pair;

[0240] The number of transmission channels for the switching of transmission channels between the frequency bands of the first frequency band pair; the identifier of the second frequency band affected by the switching of transmission channels between the frequency bands of the first frequency band pair.

[0241] In this pair, each frequency band in the first frequency band pair corresponds to an identifier. For example, if the first frequency band pair includes frequency band A and frequency band B, frequency band A corresponds to identifier 1, and frequency band B corresponds to identifier 2. It should be understood that this identifier can also be called the frequency band index.

[0242] The following is an example of the switching options for the transmission channel switching between frequency bands of the first frequency band pair:

[0243] When the transmission channel is switched to uplink transmit channel switching, the switching options for the transmission channel switching between the frequency bands of the first frequency band pair are switched uplink transmission switchedUL, or dual uplink transmission dualUL; or,

[0244] When the transmission channel is switched to downlink receive channel switching, the switching option for the transmission channel switching between the frequency bands of the first frequency band pair is to switch downlink transmission switchedDL or dual downlink transmission dualDL.

[0245] The second frequency band is affected by the switching of transmission channels between the frequency bands of the first frequency band pair:

[0246] One possible implementation is that, in the case of uplink transmit channel switching, the second frequency band is the frequency band affected by the uplink transmit channel switching between the frequency bands of the first frequency band pair for downlink reception.

[0247] Another possible implementation is that, in the case of switching from transmission channel to downlink reception channel, the second frequency band is the frequency band affected by the downlink reception channel switching between the frequency bands of the first frequency band pair during uplink transmission.

[0248] For example, the terminal reports capability information to the base station as shown in Table 2. Table 2 includes two capabilities, BC#1 and BC#2. The base station determines the first capability as BC#1 and then determines the configuration information based on BC#1. For instance, the frequency bands include bandA, bandB, bandC, and bandD. There are three frequency band pairs: bandA–bandB, bandA–bandC, and bandB–bandC. Furthermore, the transmission channel handover between these three frequency band pairs is an uplink transmission handover. The base station can determine the handover time for the different frequency band pair transmission channels: 140µs for bandA–bandB, 35µs for bandA–bandC, and 35µs for bandB–bandC.

[0249] Optionally, the terminal can also determine the configuration information corresponding to the capability based on the capability information indicated by the base station. For example, if the base station indicates to the terminal that the first capability is BC#1, and the uplink transmission handover frequency band pairs are the three frequency band pairs mentioned above, then the terminal can further determine information such as the handover time of the transmission channel switching between the above frequency band pairs based on BC#1. That is, the handover times between the three frequency band pairs bandA–bandB, bandA–bandC, and bandB–bandC are 140us, 35us, and 35us respectively, instead of 35us, 140us, and 35us as in BC#2. In this way, the received bit errors caused by the inconsistency between the handover time expected by the terminal and the handover time actually used by the base station can be avoided.

[0250] Optionally, the switching time can vary depending on the number of transmission channels used for the first frequency band pair's transmission channel switching. For example, the switching time for a 1Tx (i.e., 1 transmission channel) to 2Tx (i.e., 2 transmission channels) transmission channel switching between first frequency band pairs is the first switching time; the switching time for a 2Tx to 2Tx transmission channel switching between first frequency band pairs is the second switching time. The first switching time can be different from the second switching time. In the above configuration information, the base station can indicate the first switching time and the second switching time respectively.

[0251] Optionally, in the EN-DC scenario, the terminal can report the above frequency band pair list in UE-MRDC-Capability. In the NR scenario, the terminal can report the above frequency band pair list in UE-NR-Capability.

[0252] Steps 410 and 420 above are optional. It should also be understood that, in one possible implementation, the base station receiving capability information in step 410 and the base station determining configuration information based on the capability information in step 420 may not be the same base station.

[0253] For example, this capability information can come from the terminal, or from other access network devices or core network devices; that is, capability information from the terminal that is forwarded by other access network devices or core network devices. Base station #A receives this capability information, forwards it to base station #B, and then base station #B determines the configuration information based on this capability information.

[0254] 430. The base station sends configuration information to the terminal, and the terminal receives the configuration information accordingly.

[0255] Refer to the description in step 420 for configuration information.

[0256] In this method, by having the base station indicate information such as the first frequency band pair for transmission channel switching, the switching time for transmission channel switching between the frequency bands of the first frequency band pair, and the switching options for transmission channel switching between the first frequency band pair in the configuration information, inconsistencies in the understanding of transmission channel switching between the terminal and the base station can be avoided. This prevents the terminal from being unable to correctly decode the data blocks sent by the network when the switching time between the first frequency band pairs expected by the terminal is less than the switching time when the base station dynamically schedules the transmission channel switching, thereby causing bit errors during transmission channel switching and improving communication reliability.

[0257] To facilitate understanding of the communication method in this application, several implementation examples in different communication scenarios are given below.

[0258] Example 1, in an SA (Standalone) networking scenario:

[0259] One possible implementation, such as Figure 5 As shown in (a):

[0260] The terminal sends capability information to the base station (such as the next generation Node B, GNB), and the base station receives the capability information.

[0261] This capability information is called UECapabilityInformation. The terminal carries a capability version tag (an example of the first identifier) ​​in UECapabilityInformation and reports the capabilities that the terminal supports, such as BCList, to the base station.

[0262] The base station sends an RRC reconfiguration message to the terminal, and the terminal receives the corresponding RRC reconfiguration message.

[0263] The base station carries at least one of the following in the RRC Reconfiguration message: capability version information, BC indication, the FS indication of the corresponding line of the BC, featureSetDownlinkPerCC for each CC, and featureSetUplinkPerCC for each uplink.

[0264] In other words, the aforementioned first indication information is carried in the RRC reconfiguration message.

[0265] The terminal completes RRC reconfiguration with the base station according to the configuration indicated by the base station.

[0266] The terminal sends an RRC reconfiguration complete message to the base station.

[0267] Another possible implementation, such as Figure 5 As shown in (b):

[0268] The base station sends an RRC release message (RRCRelease) to the terminal, and the terminal receives the RRC release message.

[0269] The terminal enters the RRC inactive state based on this RRC release message, at which point the first indication information becomes invalid. One interpretation of the invalidation of the first indication information is that the terminal deletes the saved or previously received first indication information, i.e., the first indication information was of type Need M. The explanation of the invalidation of the first indication information in the following text can be found here and will not be repeated here.

[0270] The terminal sends an RRC recovery request to the base station, and the base station receives the corresponding RRC recovery request.

[0271] The base station sends an RRC Resume message to the terminal, and the terminal receives the RRC Resume message.

[0272] The RRC recovery message carries at least one of the following: capability version information, BC indication, the FS indication corresponding to the BC, featureSetDownlinkPerCC corresponding to each CC, and featureSetUplinkPerCC corresponding to each uplink. That is, the aforementioned first indication information is carried in the RRC recovery message.

[0273] The terminal completes RRC recovery with the base station based on the RRC recovery message.

[0274] The terminal sends an RRC recovery complete message to the base station, and the base station receives the corresponding RRC recovery complete message.

[0275] Another possible implementation, such as Figure 5 As shown in (c):

[0276] The terminal sends an RRC Reestablishment Request to the base station, and the base station receives the RRC Reestablishment Request.

[0277] In this situation, the first indication information becomes invalid. For example, the first indication information becomes invalid before an RRC re-establishment request is sent.

[0278] The base station sends an RRC Reestablishment message to the terminal, and the terminal receives the corresponding RRC Reestablishment message.

[0279] The terminal sends an RRC re-establishment complete message to the base station, and the base station receives the corresponding RRC re-establishment complete message.

[0280] Example 2: In an NSA networking scenario, a terminal accesses the network (e.g., an evolved NodeB, ENB).

[0281] One possible implementation is as follows Figure 6 As shown in (a):

[0282] The ENB sends an RRC connection reconfiguration message (RRCConnectionReconfiguration) to the terminal, and the terminal receives the corresponding RRC connection reconfiguration message.

[0283] The RRC connection reconfiguration message carries capability version information, BC indication, the corresponding FS line for the BC, featureSetDownlinkPerCC for each CC, and featureSetUplinkPerCC for each uplink. That is, the aforementioned first indication information is carried in the RRC connection reconfiguration message.

[0284] The terminal sends an RRC connection reconfiguration complete message to the ENB, and the ENB receives the corresponding connection reconstruction complete message.

[0285] The GNB sends an RRC reconfiguration message (RRCConnectionReconfiguration) to the terminal.

[0286] The RRC connection reconfiguration message carries at least one of the following: capability version information, BC indication, the FS indication corresponding to the BC, featureSetDownlinkPerCC corresponding to each CC, and featureSetUplinkPerCC corresponding to each uplink. That is, the aforementioned first indication information is carried in the RRC connection reconfiguration message.

[0287] The terminal completes the RRC connection reconfiguration with the GNB based on the RRC connection reconfiguration message.

[0288] The terminal sends an RRC connection reconfiguration complete message to the GNB, and the GNB receives the corresponding RRC connection reconfiguration complete message.

[0289] Another possible implementation, such as Figure 6 As shown in (b) in the figure,

[0290] The ENB sends a capability request message to the terminal, and the terminal receives the corresponding capability request message.

[0291] The terminal sends capability information to the ENB, and the ENB receives the capability information accordingly.

[0292] This capability information is called UECapabilityInformation. The terminal carries a capability version tag (an example of the first identifier) ​​in UECapabilityInformation and reports the capabilities that the terminal supports, such as BCList, to the base station.

[0293] The GNB sends an RRC reconfiguration message to the terminal, and the terminal receives the corresponding RRC reconfiguration message.

[0294] The terminal sends an RRC reconfiguration complete message to the GNB, and the GNB receives the corresponding RRC reconfiguration message.

[0295] When the ENB sends a UECapabilityEnquiry message to the terminal, the initial indication information preceding this message becomes invalid. The terminal can report supported capabilities to the ENB in ​​a UECapabilityinformation message. The GNB can then carry the initial indication information again in an RRC reconfiguration message.

[0296] Example 2, in a wireless access technology switching scenario:

[0297] One possible implementation is as follows Figure 7 As shown,

[0298] The terminal connects to the network and enters the connected state.

[0299] The ENB sends a mobilityFromEUTRACommand message to the terminal, and the terminal receives the mobilityFromEUTRACommand message.

[0300] The RRCmobilityFromEUTRACommand carries an NRtarget access technology capability container message NRtargetRAT-MessageContainer, which includes at least one of the following: capability version information, BC indication, the FS indication corresponding to the BC, featureSetDownlinkPerCC for each CC, and featureSetUplinkPerCC for each uplink. That is, the aforementioned first indication information is carried in the mobilityFromEUTRACommand.

[0301] The terminal sends an RRC reconfiguration complete message to the GNB, and the GNB receives the corresponding RRC reconfiguration complete message.

[0302] Furthermore, if the base station indicates to the terminal the frequency band of the uplink transmission channel and at least one uplink transmission switching frequency band pair, but does not indicate to the terminal the uplink transmission switching time of the frequency band pair, the terminal can determine the switching time based on the following two implementations, and further determine the first capability.

[0303] Method 1: When the terminal device supports multiple handover times for a frequency band pair, select the shortest handover time for that frequency band pair to further determine the primary capability and complete subsequent communication.

[0304] Using table 410 as an example, the terminal supports BC#1 and BC#2. The base station indicates to the terminal that the uplink transmission handover frequency band pair is bandA–bandB, but does not indicate whether the base station determined the handover time for this frequency band pair based on BC#1 or BC#2. In BC#1, the handover time corresponding to bandA–bandB is 140µs, and in BC#2, the handover time corresponding to bandA–bandB is 35µs. The terminal selects a handover time of 35µs, and further, the terminal determines the first capability as BC#2.

[0305] Method 2: The terminal determines the handover time based on the priority of the frequency band pair, further determines the primary capability, and completes subsequent communication.

[0306] For example, the base station instructs the terminal to use uplink transmission handover frequency bands including band A, band B, and band C. These three frequency bands are sent to the terminal device via a list of configured uplink transmission handover frequency bands. The frequency bands in this list are arranged in descending order of priority; that is, the frequency band listed first has the highest priority, the second highest priority, and so on, with the last frequency band having the lowest priority. Different frequency bands have different priorities, and the priority of a band pair can be determined based on the priorities of the frequency bands included in that pair. For example, if band A has a priority of 1, band B has a priority of 2, and band C has a priority of 3, with lower values ​​indicating higher priorities, then the band pair band A–band B has the highest priority, band A–band C has the next highest priority, and band B–band C has the lowest priority.

[0307] Using table 410 as an example, the terminal device supports BC#1 and BC#2. The uplink transmission handover frequency bands configured by the base station for the terminal are bandA, bandB, and bandC, arranged in descending order of priority. Therefore, bandA has the highest priority, followed by bandB, and bandC has the lowest. However, the base station does not indicate whether the configuration is based on BC#1 or BC#2. Based on the frequency band priority, the terminal can determine that bandA–bandB has the highest priority, and the terminal selects the BC with the shorter handover time for bandA–bandB as the first capability. That is, in BC#1, the handover time for bandA–bandB is 140µs, and in BC#2, the handover time for bandA–bandB is 35µs. The terminal determines that the handover time for bandA–bandB is 35µs, and further, the terminal determines that the first capability is BC#2. Therefore, based on BC#2, the handover times between bandA–bandB, bandA–bandC, and bandB–bandC can be determined.

[0308] In this method, the terminal can obtain accurate communication configuration in a timely manner, avoiding uplink and downlink reception impairment, bit errors and other anomalies caused by inaccurate alignment between the base station and the terminal, thus improving communication quality.

[0309] It should be understood that the above-mentioned frequency band pairs, frequency bands or frequency band pairs corresponding to priorities, the list format of uplink transmission switching frequency bands and the order of frequency bands in the list are only examples and should not constitute a limitation on the application.

[0310] It is understood that, in order to achieve the functions in the above embodiments, the network device and terminal device include hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps of the various examples described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0311] Figure 8 and Figure 9 The diagram illustrates the possible structures of communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of a terminal or base station in the above method embodiments, and thus also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device may be as follows: Figure 1 One of the terminals 120a-120j shown can also be as follows: Figure 1 The base station 110a or 110b shown can also be a module (such as a chip) applied to a terminal or base station.

[0312] like Figure 8 As shown, the communication device 800 includes a processing unit 810 and a transceiver unit 820. The communication device 800 is used to implement the above-mentioned... Figure 2 The method embodiments shown illustrate the functions of the base station or the terminal.

[0313] When the communication device 800 is used to implement Figure 2 The base station function in the method embodiment shown is as follows:

[0314] The transceiver unit 820 can be used to send first instruction information;

[0315] The transceiver unit 820 can also be used to send configuration information;

[0316] The processing unit 810 is used to determine configuration information based on the first capability.

[0317] When the communication device 800 is used to implement Figure 2 The terminal function in the method embodiment shown is as follows:

[0318] The transceiver unit 820 is used to receive the first instruction information;

[0319] The transceiver unit 820 is also used to receive configuration information.

[0320] When the communication device 800 is used to implement Figure 4 The base station function in the method embodiment shown is as follows:

[0321] The transceiver unit 820 can be used to receive capability information;

[0322] Processing unit 810 is used to determine configuration information based on capability information;

[0323] The transceiver unit 820 can be used to send configuration information.

[0324] When the communication device 800 is used to implement Figure 4 The terminal function in the method embodiment shown is as follows:

[0325] The transceiver unit 820 can be used to transmit capability information;

[0326] The transceiver unit 820 can be used to receive configuration information.

[0327] For a more detailed description of the processing unit 810 and the transceiver unit 820, please refer to [link / reference needed]. Figures 3 to 4 The relevant descriptions in the method embodiments shown are directly obtained and will not be repeated here.

[0328] like Figure 9 As shown, the communication device 900 includes a processor 910 and an interface circuit 920. The processor 910 and the interface circuit 920 are coupled to each other. It is understood that the interface circuit 920 can be a transceiver or an input / output interface. Optionally, the communication device 900 may also include a memory 940 for storing instructions executed by the processor 910, or storing input data required by the processor 910 to execute instructions, or storing data generated after the processor 910 executes instructions.

[0329] When the communication device 900 is used to implement Figures 2 to 7 In the method shown, the processor 910 is used to implement the functions of the processing unit 810, and the interface circuit 920 is used to implement the functions of the transceiver unit 820.

[0330] When the aforementioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives information from other modules (such as radio frequency modules or antennas) in the terminal, which is information sent to the terminal by the base station; or, the terminal chip sends information to other modules (such as radio frequency modules or antennas) in the terminal, which is information sent to the base station by the terminal.

[0331] When the aforementioned communication device is a module applied to a base station, the base station module implements the functions of the base station in the above method embodiments. The base station module receives information from other modules (such as radio frequency modules or antennas) in the base station, information sent by the terminal to the base station; or, the base station module sends information to other modules (such as radio frequency modules or antennas) in the base station, information sent by the base station to the terminal. Here, the base station module can be the baseband chip of the base station, or a DU (Digital Unit) or other modules. The DU can be a DU under an Open Radio Access Network (O-RAN) architecture.

[0332] It is understood that the processor in the embodiments of this application may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

[0333] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a base station or terminal. The processor and storage medium can also exist as discrete components in a base station or terminal.

[0334] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a base station, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0335] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0336] Depending on whether the specification uses "optional": In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0337] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method characterized by comprising: The method comprises: receiving configuration information, the configuration information being used for configuring the terminal device to perform uplink transmission channel switching or downlink reception channel switching between frequency bands of a first frequency band pair, the first frequency band pair comprising at least two frequency bands, and the configuration information comprising: identifications of the frequency bands comprised in the first frequency band pair; a time length of a first switching time of transmission channel switching between the frequency bands of the first frequency band pair. Before receiving the configuration information, the method further comprises:

2. The method of claim 1, wherein, sending capability information, the capability information comprising a capability of transmission channel switching supported by the terminal device.

3. The method of claim 2, wherein, The capability information comprises a first frequency band combination of uplink transmission channel switching, the frequency bands in the first frequency band combination comprising the frequency bands in the first frequency band pair, and the capability information indicating that the switching time of uplink transmission channel switching of the first frequency band pair in the first frequency band combination is a first time length.

4. The method according to claim 2 or 3, characterized in that, The capability information comprises a second frequency band combination of uplink transmission channel switching, the frequency bands in the second frequency band combination comprising the frequency bands in the first frequency band pair, and the capability information indicating that the switching time of uplink transmission channel switching of the first frequency band pair in the second frequency band combination is a second time length. The time length of the first switching time is the first time length.

5. The method of any of claims 1 to 3, wherein: the time length of the first switching time is 35us; or 6. A communication method characterized by comprising: the time length of the first switching time is 140us. The method comprises: sending configuration information, the configuration information being used for configuring the terminal device to perform uplink transmission channel switching or downlink reception channel switching between frequency bands of a first frequency band pair, the first frequency band pair comprising at least two frequency bands, and the configuration information comprising: identifications of the frequency bands comprised in the first frequency band pair; a time length of a first switching time of transmission channel switching between the frequency bands of the first frequency band pair. Before sending the configuration information, the method further comprises: receiving capability information, the capability information comprising a capability of transmission channel switching supported by the terminal device; 7. The method of claim 6, wherein, determining the configuration information based on the capability information.

8. The method of claim 7, wherein, The capability information comprises a first frequency band combination of uplink transmission channel switching, the frequency bands in the first frequency band combination comprising the frequency bands in the first frequency band pair, and the capability information indicating that the switching time of uplink transmission channel switching of the first frequency band pair in the first frequency band combination is a first time length.

9. The method according to claim 7 or 8, characterized in that, The capability information comprises a second frequency band combination of uplink transmission channel switching, the frequency bands in the second frequency band combination comprising the frequency bands in the first frequency band pair, and the capability information indicating that the switching time of uplink transmission channel switching of the first frequency band pair in the second frequency band combination is a second time length. The time length of the first switching time is the first time length.

10. The method of any of claims 6 to 8, wherein: the time length of the first switching time is 35us; or 11. A communications device, characterized by the time length of the first switching time is 140us. The communication device comprises a processing module and a transceiver module, and is configured to perform the method of any of claims 1 to 5.

12. A communications device, characterized by The communication device comprises a processing module and a transceiver module, and is configured to perform the method of any one of claims 6-10.

13. A communications device, characterized by The apparatus comprises a processor connected to a memory, the memory being configured to store a computer program, and the processor being configured to execute the computer program stored in the memory to cause the apparatus to perform the method of any one of claims 1-10.

14. A communication system, characterized by The communication device comprises the apparatus of claims 11 and 12.

15. A computer-readable storage medium, characterized in that, The computer readable storage medium is configured to store a computer program, which, when executed on a computer, causes the computer to perform the method of any one of claims 1-10.

16. A chip, characterized by The apparatus comprises a processor and a communication interface, the processor being configured to read instructions to perform the method of any one of claims 1-10.

17. A computer program product, characterised in that, The computer program, when executed on a computer, causes the computer to perform the method of any one of claims 1-10.

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