Method for reporting direct current carrier position, terminal equipment and network equipment

Abstract

A method for reporting a DC carrier position, a terminal device and a network device, which are beneficial for reducing the signaling overhead of the reported DC position, the method comprising: a terminal device determining at least one DC carrier position offset, each direct-current carrier position offset in the at least one direct-current carrier position offset represents a frequency offset of a direct-current carrier position used by the terminal equipment relative to a reference direct-current carrier position; and the terminal device reports the at least one DC carrier position offset to a network device.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically to a method for reporting a DC carrier position, a terminal device, and a network device. Background Art

[0002] In a communication system, a terminal device can report a direct current (DC) carrier position (DC position for short) based on a configured bandwidth part (also known as a bandwidth segment) (Band WidthPart, BWP). Assuming that four BWPs are configured on a single carrier, the terminal device reports a maximum of four DC positions to the network device.

[0003] In some scenarios, the terminal device can work on multiple carriers, each carrier can be configured with multiple BWPs, and every two BWPs can determine a DC position. There are many potential DC positions. In this case, how to report the DC position is an urgent problem to be solved. Summary of the invention

[0004] The present application provides a method, terminal equipment and network equipment for reporting a DC carrier position, which is beneficial to reducing the signaling overhead of the reported DC position.

[0005] In a first aspect, a method for reporting a DC carrier position is provided, comprising: a terminal device determines at least one DC carrier position offset, wherein each of the at least one DC carrier position offset represents a frequency offset of a DC carrier position used by the terminal device relative to a reference DC carrier position; and the terminal device reports the at least one DC carrier position offset to a network device.

[0006] In a second aspect, a method for reporting a DC carrier position is provided, comprising: a network device receives at least one DC carrier position offset sent by a terminal device, wherein each of the at least one DC carrier position offset represents a frequency offset of the DC carrier position used by the terminal device relative to a reference DC carrier position; and the network device determines the DC carrier position used by the terminal device based on the reference DC carrier position and the at least one DC carrier position offset.

[0007] In a third aspect, a terminal device is provided for executing the method in the first aspect or its various implementations.

[0008] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0009] In a fourth aspect, a network device is provided for executing the method in the second aspect or its respective implementation manners.

[0010] Specifically, the network device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0011] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its implementation manners.

[0012] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or its implementation manners.

[0013] In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or their respective implementations. Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method in any one of the first to second aspects or their respective implementations.

[0014] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method of any one of the first to second aspects or any of their implementations.

[0015] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above or in each of their implementations.

[0016] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects or in each of their implementations.

[0017] Through the above technical solution, the terminal equipment reports the DC carrier position by means of a reference DC carrier position plus a DC carrier position offset. Thus, when the DC carrier position actually used by the terminal equipment is the reference DC carrier position, it is not necessary to report the DC carrier position offset. When the DC carrier position actually used is adjusted, it is only necessary to report the frequency offset of the adjusted DC carrier position relative to the reference DC carrier position, thereby reducing signaling overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of a signal modulation provided in an embodiment of the present application.

[0020] Figure 3 This is a schematic diagram of a signal modulation spectrum provided in an embodiment of the present application.

[0021] Figure 4 It is a schematic diagram of the internal structure of a terminal device provided in an embodiment of the present application.

[0022] Figure 5 is a schematic diagram of BWP in a carrier aggregation scenario.

[0023] Figure 6 It is a schematic interactive diagram of a method for reporting a DC carrier position provided in an embodiment of the present application.

[0024] Figures 7 to 12 is a schematic diagram of a reference DC position according to an embodiment of the present application.

[0025] Fig.13 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0026] Fig.14 It is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0027] Fig.15 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0028] Fig.16 It is a schematic block diagram of a chip provided according to an embodiment of the present application.

[0029] Fig.17 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0032] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0033] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0034] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0035] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0036] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0037] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0038] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0039] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0040] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0041] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0042] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0043] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0044] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0045] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0046] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0047] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0049] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0050] In the embodiments of the present application, "pre-definition" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0051] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0052] In order to better understand the embodiments of the present application, the relevant technologies are first described.

[0053] In wireless communications, modulation is the main method to accomplish signal spectrum movement. Figure 2As shown, the low-frequency input signal F1 and the modulated carrier F0 can be subjected to nonlinear operation by a mixer to generate a sum frequency signal or a difference frequency signal of the two signals, from which the required high-order frequency output signal F2 is screened out, thus completing the spectrum shift from low frequency to high frequency, wherein the frequency relationship is F2=F1+F0.

[0054] For broadband signals, the center frequency is called the DC carrier position, also known as the DC (Direct Current) position. Figure 3 F1 and F2 in.

[0055] In a specific implementation, the modulation of the signal is implemented in the radio frequency chip (RFIC) of the terminal device, such as Figure 4 As shown, the baseband chip (BBIC) of the terminal device inputs the baseband signal to the RFIC. Furthermore, in the RFIC, the input low-frequency baseband signal and the local oscillator signal (LO, frequency is F0) of the RFIC are mixed to generate a radio frequency signal, which is amplified by the power amplifier (PA) and finally transmitted through the antenna of the terminal device.

[0056] In the orthogonal frequency-division multiplexing (OFDM) modulation method, there is usually strong signal interference at the DC position. This carrier needs to be removed at the receiving end to improve the received signal-to-noise ratio. Therefore, the receiving end needs to know the exact DC position. The DC position is usually notified to the receiving end by the transmitting end. For example, the terminal device needs to inform the network device of the exact DC position of its transmitted signal so that the network device can accurately remove the subcarrier at the DC position.

[0057] In the NR system, in order to save power for the terminal, the concept of BWP is introduced. The network equipment usually configures a smaller transmit and receive bandwidth for the terminal device, thereby reducing the complexity of the terminal device transmitting and receiving signals. For example, there will be multiple channels in the entire frequency band. After the terminal device accesses a channel, the network device will further configure no more than 4 BWPs (only one BWP can be activated at the same time). The terminal device will work in this activated BWP in subsequent communications. The terminal device can report the DC position based on the configured BWP. Assuming that 4 BWPs are configured on a single carrier, the terminal device will report up to 4 DC positions to the network device.

[0058] In some scenarios, the terminal device can work on multiple carriers, each carrier can be configured with multiple BWPs, and the specific location of the DC will be affected by the specific locations of the activated BWPs on the multiple carriers. Figure 5As shown, carrier 1 is configured with BWP1~BWP4, carrier 2 is configured with BWPx~BWPz, ..., carrier n is configured with BWPa~BWPd, then there are 4*3*...*4 potential BWP combinations. When a large number of carriers are configured, the number of potential BWP combinations will be very large. In this case, how to report the DC position is an urgent problem to be solved.

[0059] It should be understood that in the various embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0060] It should be noted that, under the premise of no conflict, the various embodiments described in this application and / or the technical features in each embodiment can be arbitrarily combined with each other, and the technical solution obtained after the combination should also fall within the protection scope of this application.

[0061] Figure 6 is a schematic interactive diagram of a method for reporting a DC carrier position according to an embodiment of the present application, such as Figure 6 As shown, the method 200 may include at least some of the following steps:

[0062] S204, the terminal device determines at least one DC carrier position offset;

[0063] S205, the terminal device reports the at least one DC carrier position offset to the network device.

[0064] In an embodiment of the present application, the DC carrier position offset represents a frequency offset of the DC carrier position used by the terminal device relative to a reference DC carrier position.

[0065] It should be noted that in the embodiments of the present application, the DC carrier position is also called the DC position, and the two can be replaced with each other. The DC carrier position offset is also called the DC offset, and the two can be replaced with each other. The reference DC carrier position is also called the reference DC position, and the two can be replaced with each other.

[0066] It should be understood that the embodiment of the present application does not limit the expression of the DC offset. The DC offset can be a positive value, a negative value, or zero.

[0067] As an example, the DC offset may be a specific offset frequency value, such as 5 khz, 15 khz, etc.

[0068] As another example, the DC offset may be the number of offset subcarriers, for example, offsetting n subcarriers in units of 15 khz subcarrier spacing, where n may be a positive value, a negative value, or zero.

[0069] As another example, the DC offset can be an offset amount in units of a specific frequency interval, such as a frequency interval of 100khz, 5khz, 15khz, or 200khz, etc., offset by n frequency intervals, where n can be a positive value, a negative value, or zero.

[0070] Optionally, in some embodiments, if the terminal device does not send the at least one DC offset to the network device, the network device may consider the DC position actually used by the terminal device as the reference DC position, and further perform interference elimination based on the reference DC position.

[0071] In some embodiments, the DC carrier position actually used by the terminal device is the same as the reference DC position. In this case, the terminal device may not send the at least one DC offset to the network device.

[0072] In other embodiments, the DC carrier position actually used by the terminal device is different from the reference DC position. For example, in a multi-carrier scenario, the DC position of the terminal device is affected by multiple factors, such as not only the lowest and highest frequency carriers, the lowest and highest frequency activated carriers, the lowest and highest frequency BWPs, and the lowest and highest frequency activated BWPs, but also in some scenarios, the intermediate carriers and the intermediate BWPs are affected, such as the need to adjust the DC position to avoid the influence of internal interference. In this case, the terminal device can report at least one DC offset to the network device, so that the network device can determine the DC position actually used by the terminal device based on the reference DC position and the at least one DC offset, and further perform interference elimination based on the actually used DC position.

[0073] Optionally, in some embodiments, the at least one DC offset may be sent via any uplink message or uplink signaling, such as an uplink radio resource control (RRC) message, a media access control (MAC) signaling, a physical uplink control channel (PUCCH), etc., which is not limited in the present application.

[0074] In an embodiment of the present application, the terminal device can work simultaneously on multiple carriers. For example, the terminal device is configured to adopt carrier aggregation (CA) (for example, it can include intra-band continuous CA and intra-band non-continuous CA) or dual-connection working mode.

[0075] In the embodiment of the present application, the terminal device may adopt a single transmission link to support simultaneous operation on the multiple carriers, or may adopt multiple transmission links to support simultaneous operation on the multiple carriers. In other words, the terminal device may adopt a single transmission link architecture, or may adopt a multiple transmission link architecture, or in other words, the multiple carriers correspond to a single transmission link, or correspond to multiple transmission links.

[0076] In the embodiment of the present application, the transmission link can be used to implement modulation and power amplification of the carrier signal, and the transmission link may include a power amplifier (PA) and a mixer. In some cases, the transmission link architecture may refer to the use of a PA architecture.

[0077] In an embodiment of the present application, the reference DC carrier position may be one or more.

[0078] In some embodiments, when the terminal device adopts a single transmission link architecture, the reference DC carrier position can be one.

[0079] For example, Figure 7 As shown, the terminal device is configured with carriers 1 to 4, and the four carriers correspond to a single transmission link, so the reference DC carrier position can be one.

[0080] In other embodiments, the terminal device adopts a multi-transmission link architecture, and the reference DC carrier position can be multiple, each transmission link corresponds to a reference DC carrier position, or the reference DC carrier position can be one, for example, multiple transmission links correspond to the same reference DC carrier position.

[0081] For example, Figure 8 As shown, the terminal device is configured with carriers 1 to 4, wherein carrier 1 and carrier 2 correspond to transmission link 1, and carrier 3 and carrier 4 correspond to transmission link 2. Transmission link 1 and transmission link 2 can respectively correspond to their own reference DC positions, for example, transmission link 1 corresponds to reference DC position 1, and transmission link 2 corresponds to reference DC position 2.

[0082] In some embodiments, the terminal device adopts a single transmission link architecture, the number of the reference DC carrier positions is one, and the at least one DC carrier position offset includes a DC carrier position offset. The one reference DC carrier position and the one DC carrier position offset are used to determine the DC carrier position used by the single transmission link.

[0083] In some other embodiments, the terminal device adopts a multi-transmit link architecture, and the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmit link corresponds to a DC carrier position offset, and each DC carrier position offset is a frequency offset relative to the same reference DC carrier position. The same reference DC carrier position and the DC carrier position offset corresponding to each transmit link are used to determine the DC carrier position used by each transmit link.

[0084] In some other embodiments, the terminal device adopts a multi-transmission link architecture, each transmission link corresponds to a reference DC carrier position, and the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmission link corresponds to a DC carrier position offset. The reference DC carrier position and the DC carrier position offset corresponding to each transmission link are used to determine the DC carrier position used by each transmission link.

[0085] In some other embodiments, the terminal device adopts a multi-transmission link architecture, each transmission link corresponds to a reference DC carrier position, and the at least one DC carrier position offset includes a DC carrier position offset. The reference DC carrier position corresponding to each transmission link and the one DC carrier position offset are used to determine the DC carrier position used by each transmission link.

[0086] Below, taking a single transmission link as an example, the specific implementation method of the reference DC position of each transmission link is explained. When there are multiple transmission links, the implementation method of the reference DC position of other transmission links is similar and will not be repeated here.

[0087] Optionally, in some embodiments, the terminal device can determine at least one DC carrier position, and the at least one DC carrier position can be predefined, or can be determined based on the configuration of the network device, or can be determined by the terminal device itself, which is not limited in this application.

[0088] Optionally, in some embodiments, Figure 6 As shown, the method 200 further includes:

[0089] S201, the terminal device may report the at least one DC location to the network device.

[0090] Optionally, in some embodiments, the at least one DC carrier position is sent via any uplink message or uplink signaling, such as an uplink RRC message, MAC signaling, PUCCH, etc., which is not limited in this application.

[0091] The reference DC carrier position may be a DC carrier position in the at least one DC carrier position used to determine the DC carrier position offset. The at least one DC carrier position may be considered as a candidate reference DC carrier position, which is a target reference DC carrier position.

[0092] Optionally, the reference DC position may include part or all of the at least one DC carrier position.

[0093] In some embodiments, the terminal device may report multiple DC positions to the network device, and further indicate to the network device a reference DC position used when determining the DC offset.

[0094] That is, the terminal device may report multiple reference DC positions to the network device, and further indicate to the network device the target reference DC position used when determining the DC offset.

[0095] In some embodiments, Figure 6 As shown, the method 200 further includes:

[0096] S202, the terminal device may send first indication information to the network device, where the first indication information is used to indicate a reference DC carrier position among the multiple DC carrier positions, that is, which DC carrier position is used as a reference DC position.

[0097] As an example, the first indication information includes a first bit map, the first bit map includes multiple bits, each of the multiple bits corresponds to a DC carrier position among the multiple DC carrier positions, and the value of each bit is used to indicate whether the corresponding DC carrier position is a reference DC carrier position.

[0098] For example, a bit value of 1 indicates yes, and a bit value of 0 indicates no. If the terminal device reports DC position 0 to DC position 3, the first bitmap may include 4 bits, each corresponding to a DC position. If the first bitmap is 1000, it indicates that DC position 3 is used as the reference DC position.

[0099] Optionally, in some embodiments, the first indication information is sent via any uplink message or uplink signaling, such as an uplink RRC message, MAC signaling, PUCCH, etc., which is not limited in this application.

[0100] Optionally, in some embodiments, Figure 6 As shown, the method also includes:

[0101] S203, the terminal device sends first capability information to the network device, where the first capability information is used to indicate whether the terminal device supports reporting of the DC carrier position under CA.

[0102] Optionally, in some embodiments, the first capability information is sent via any uplink message or uplink signaling, such as an uplink RRC message, MAC signaling, PUCCH, etc., which is not limited in this application.

[0103] Optionally, the first capability information may also be used to indicate whether the terminal device supports the existing DC position reporting method or the DC position reporting method based on the embodiment of the present application. Alternatively, the first capability information may also be used to indicate whether the reporting method based on the reference DC position and DC offset is supported.

[0104] Optionally, in some embodiments, the terminal device may also implicitly indicate to the network device a DC carrier position among multiple DC carrier positions as a reference DC carrier position.

[0105] For example, the terminal device may implicitly indicate the reference DC position by whether to send the first capability information or the content indicated by the sent first capability information.

[0106] As an example, if the first capability information indicates that the terminal device supports reporting of the DC carrier position under CA, in this case, the reference DC carrier position is the first DC carrier position among the multiple DC carrier positions.

[0107] As another example, if the first capability information indicates that the terminal device does not support reporting of the DC carrier position under CA, in this case, the reference DC carrier position is the second DC carrier position among the multiple DC carrier positions, wherein the first DC carrier position and the second DC carrier position are different.

[0108] As another example, when the terminal device does not send indication information indicating the reporting capability of the DC position, the reference DC carrier position is the third DC carrier position among the multiple DC carrier positions.

[0109] As another example, when the terminal device sends indication information indicating the reporting capability of the DC position, the reference DC carrier position is the fourth DC carrier position among the multiple DC carrier positions, wherein the third DC carrier position and the fourth DC carrier position are different. Alternatively, when the terminal device sends indication information indicating the reporting capability of the DC position, it implicitly indicates that the reference DC carrier position corresponds to different DC carrier positions according to different contents of the indication information of the reporting capability.

[0110] In some embodiments, the terminal device may determine at least one reference DC position according to first information, wherein the first information includes at least one of the following:

[0111] The frequency band configuration on the terminal device, the carrier configuration on the terminal device, the bandwidth part BWP configuration on the terminal device, and the activated BWP configuration of the terminal device, wherein the frequency band configuration is used to configure the working frequency band of the terminal device, the carrier configuration is used to configure multiple carriers on the working frequency band, the BWP configuration is used to configure multiple BWPs on each of the multiple carriers, and the activated BWP configuration is used to configure an activated BWP among the multiple BWPs.

[0112] Optionally, in an embodiment of the present application, the terminal device determines the reference DC position based on the first information by the terminal device itself, or may be based on an instruction from a network device, or may be predefined (or default).

[0113] Optionally, the network device may indicate the method for determining the reference DC position to the terminal device through existing signaling. For example, the method for determining the reference DC position may be configured for the terminal device through frequency band configuration, carrier configuration, BWP configuration, etc. Alternatively, the method for determining the reference DC position may be configured for the terminal device through new signaling, which is not limited in this application.

[0114] It should be understood that in some embodiments, the method for determining the reference DC position is predefined. In this case, the terminal device does not need to report the reference DC position to the network device, and the network device can know the reference DC position used by the terminal device to determine the DC offset.

[0115] The following describes the method for determining the reference DC position, ie, the possible positions of the reference DC position, in conjunction with specific embodiments.

[0116] Method 1

[0117] In this method 1, the terminal device determines the reference DC position according to the frequency band configuration.

[0118] In some embodiments, the terminal device may determine that the reference DC position is located at a specific position on the working frequency band indicated by the frequency band configuration. The specific position may be pre-agreed.

[0119] As an example, the reference DC position includes a preset position on the working frequency band indicated by the frequency band configuration. The preset position on the working frequency band may be, for example, a center frequency point position of the working frequency band. Fig. 9 The center frequency position shown is DC1.

[0120] In this case, the DC position reported by the terminal device may not be affected by the carrier configuration, BWP configuration, and BWP activation status.

[0121] Method 2

[0122] In this mode 2, the terminal device determines the reference DC position according to the specific carrier configuration on the terminal device.

[0123] In this case, the reference DC position reported by the terminal device may not be affected by the BWP configuration and BWP activation status.

[0124] Optionally, the specific carrier configuration can be any carrier configuration of all carrier configurations on the terminal device, or it can be a carrier configuration that meets specific conditions, such as the carrier configuration corresponding to the carrier with the smallest carrier number, or it can be the carrier configuration corresponding to the carrier with the largest carrier number, etc.

[0125] In some embodiments, the terminal device determines a reference DC position according to the first carrier. In this case, the reference DC position is a specific position on the first carrier. The specific position may be pre-agreed. For example, it may be the center frequency position of the first carrier.

[0126] For example, Fig. 9 As shown, the terminal device is configured with carrier 1 and carrier 2, and the target carrier used to determine the reference DC position can be carrier 1 or carrier 2. Therefore, the reference DC position can be located at the center frequency position DC2 on carrier 1, or it can also be located at the center frequency position DC3 on carrier 2.

[0127] Optionally, which carrier configuration the terminal device adopts to determine the reference DC position may be predefined (or default), for example, the carrier configuration corresponding to the carrier with the smallest carrier number is adopted by default, or it may be indicated by the network device, or it may be determined by negotiation between the network device and the terminal device, or it may be determined by the terminal device itself and further notified to the network device. For example, the terminal device may send a second indication message to the network device, and the second indication message is used to indicate a target carrier or a target carrier configuration used to determine the reference DC position.

[0128] It should be understood that the present application does not specifically limit the indication method of the second indication information.

[0129] As an example, the second indication information includes a second bit map, the second bit map includes multiple bits, each of the multiple bits corresponds to a carrier among the multiple carriers, and the value of each bit is used to indicate whether the DC carrier position is located in the corresponding carrier, for example, a value of 1 indicates yes, and a value of 0 indicates no.

[0130] For example, if the terminal device is configured with 8 carrier configurations, the first bit map may include 8 bits (bit 7 to bit 0), corresponding to carrier 7 to carrier 0 respectively. When the reference DC position is on carrier 1, bit 1 can be set to 1 and the other bits can be set to 0, indicating that the reference DC position is on carrier 1.

[0131] As another example, the second indication information includes multiple bits, and different values ​​of the multiple bits are used to indicate the carrier where the reference DC position is located.

[0132] For example, if the terminal device is configured with 8 carrier configurations, the second indication information can be indicated by 3 bits, and the 8 values ​​of the 3 bits correspond to the 8 carrier configurations. For example, when the reference DC position is located at the 4th carrier, the 3 bits are set to 100.

[0133] Optionally, in some embodiments, the second indication information is sent via any uplink message or uplink signaling, such as an uplink RRC message, which is not limited in the present application.

[0134] Method 3

[0135] In this mode 3, the terminal device determines the reference DC position according to the specific activated BWP configuration.

[0136] In this case, the reference DC location reported by the terminal device is related to the BWP configuration and the activation status of the BWP.

[0137] Optionally, the specifically activated BWP configuration may be any BWP configuration among all activated BWP configurations on the terminal device, or it may be a BWP configuration that satisfies specific conditions, such as the BWP configuration corresponding to the BWP with the smallest BWP identification (Identify, ID), or it may be the BWP configuration corresponding to the BWP with the largest BWP ID.

[0138] In some embodiments, the terminal device determines a reference DC position according to the first BWP. In this case, the reference DC position is a specific position on the first BWP. The specific position may be pre-agreed, for example, the center frequency point position of the first BWP.

[0139] For example, Fig. 9As shown, the terminal device is configured with carrier 1 and carrier 2, the BWP activated on carrier 1 is BWP1, the BWP activated on carrier 2 is BWPa, the target BWP used to determine the reference DC position can be BWP1 or BWPa, then the reference DC position can be located at the center frequency position DC4 of BWP1, or it can also be located at the center frequency position DC5 of BWPa.

[0140] Optionally, which activated BWP configuration the terminal device adopts to determine the reference DC position may be predefined (or default), for example, the BWP configuration corresponding to the BWP with the smallest BWP ID among the activated BWPs is adopted by default, or it may be indicated by the network device, or it may be determined by negotiation between the network device and the terminal device, or it may be determined by the terminal device itself and further notified to the network device. For example, the terminal device may send third indication information to the network device, and the third indication information is used to indicate the target BWP or target BWP configuration used to determine the reference DC position.

[0141] It should be understood that the present application does not specifically limit the indication method of the third indication information.

[0142] As an example, the third indication information includes a third bit map, the third bit map includes multiple bits, each of the multiple bits corresponds to one of the activated BWPs on the multiple carriers, and the value of each bit is used to indicate whether the reference DC position is located at the corresponding activated BWP.

[0143] For example, if the terminal device is configured with four activated BWP configurations, the third bit map may include four bits (bit 3 to bit 0), corresponding to the four activated BWP configurations, or in other words, corresponding to four carriers. When the reference DC position is on the activated BWP on the second carrier, bit 1 can be set to 1 and the other bits can be set to 0, indicating that the reference DC position is on the activated BWP on carrier 1.

[0144] As another example, the third indication information includes multiple bits, and different values ​​of the multiple bits are used to indicate the BWP where the reference DC position is located.

[0145] For example, if four BWP configurations are configured on the terminal device, the third indication information can be indicated by 2 bits, and the four values ​​of the 2 bits correspond to the four BWP configurations. For example, when the reference DC position is located at the activated BWP on the second carrier, the 2 bits are set to 010.

[0146] Optionally, in some embodiments, the third indication information is sent via an uplink RRC message, or may also be sent via other uplink messages or signaling, which is not limited in the present application.

[0147] Method 4

[0148] In this mode 4, the terminal device determines the reference DC position based on all carrier configurations.

[0149] In this case, the reference DC position reported by the terminal device is related to the carrier configuration, but is not affected by the BWP configuration and the activation status of the BWP.

[0150] In some embodiments, the terminal device may determine a reference DC configuration based on a frequency band range occupied by multiple carriers.

[0151] It should be understood that in the embodiment of the present application, the frequency band range occupied by each of the multiple carriers may be continuous or discrete. In some embodiments, the frequency band range occupied by the multiple carriers may be, for example, the union of the frequency band ranges occupied by each carrier, or may be the frequency band range between the lowest frequency point and the highest frequency point occupied by the multiple carriers. That is, the frequency band range occupied by the multiple carriers may be a discrete plurality of sub-frequency band ranges, or may be a continuous frequency band range.

[0152] As an example, the reference DC position includes a preset position in a first frequency band range, where the first frequency band range is a frequency band range occupied by the multiple carriers.

[0153] In one case, the first frequency band is a continuous frequency band. In this case, the preset position in the first frequency band may be the center frequency point of the first frequency band. Fig.10 As shown, the terminal device is configured with carrier 1 and carrier 2, the frequency band range between the lowest frequency point and the highest frequency point occupied by carrier 1 and carrier 2 is the first frequency band range, and the reference DC position can be the center frequency point position DC6 of the first frequency band range.

[0154] In another case, the first frequency band range includes a plurality of discrete sub-frequency band ranges. In this case, the preset position in the first frequency band range may include a central frequency point position of each of the plurality of discrete sub-frequency band ranges.

[0155] Method 5

[0156] In this mode 5, the terminal device determines the reference DC position according to the activated BWP configurations on all carriers.

[0157] In this case, the reference DC location reported by the terminal device is related to the activation status of the BWP.

[0158] In some embodiments, the terminal device may determine a reference DC configuration according to a frequency band range occupied by activated BWPs on multiple carriers.

[0159] Similar to the frequency band range occupied by the multiple carriers, the frequency band range occupied by the activated BWPs on the multiple carriers may also be a discrete plurality of sub-frequency band ranges, or may be a continuous frequency band range, for example, the frequency band range between the lowest frequency point and the highest frequency point occupied by all activated BWPs on the multiple carriers.

[0160] As an example, the reference DC position includes a preset position in a second frequency band range, where the second frequency band range is a frequency band range occupied by activated BWPs on the multiple carriers.

[0161] In one case, the second frequency band range is a continuous frequency band range, in which case the preset position in the second frequency band range may be the center frequency point position of the second frequency band range. Fig.10 As shown, the terminal device is configured with carrier 1 and carrier 2, the BWP activated on carrier 1 is BWP1, the BWP activated on carrier 2 is BWPa, and the frequency band range between the lowest frequency point to the highest frequency point occupied by BWP1 and BWPa is the second frequency band range, then the reference DC position can be the center frequency point position DC7 of the second frequency band range.

[0162] In another case, the second frequency band range includes a plurality of discrete sub-frequency band ranges. In this case, the preset position in the second frequency band range may include a central frequency point position of each of the plurality of discrete sub-frequency band ranges.

[0163] Method 6

[0164] In this mode 6, the terminal device determines the reference DC position according to all BWP configurations on a specific carrier.

[0165] In this case, the reference DC position reported by the terminal device is related to the BWP configuration, but is not affected by the activation of the BWP.

[0166] Optionally, the specific carrier may be any carrier among all carriers on the terminal device, or may be a carrier that meets specific conditions, such as a carrier with the smallest carrier number, or a carrier with the largest carrier number, etc.

[0167] Optionally, the terminal device may adopt all BWP configurations on which carrier to determine the reference DC position, which may be predefined (or default), for example, the BWP configuration on the carrier with the smallest carrier number may be adopted by default, or it may be indicated by the network device, or it may be determined by negotiation between the network device and the terminal device, or it may be determined by the terminal device itself and further notified to the network device. For example, the terminal device may send a third indication message to the network device, and the third indication message is used to indicate the target carrier for determining the reference DC position. For the specific indication method, refer to the relevant description of the second indication information in method 2, which will not be repeated here for the sake of brevity.

[0168] In some embodiments, the terminal device may determine a reference DC configuration based on a frequency band range occupied by all BWPs on a specific carrier.

[0169] Similar to the frequency band range in Mode 4 and Mode 5, the frequency band range occupied by all BWPs on the specific carrier may also be a plurality of discrete sub-frequency band ranges, or may be a continuous frequency band range, for example, the frequency band range between the lowest frequency point and the highest frequency point occupied by all BWPs on the specific carrier.

[0170] As an example, the reference DC position includes a preset position in a third frequency band range, where the third frequency band range is a frequency band range occupied by multiple BWPs configured on a second carrier among the multiple carriers.

[0171] In one case, the third frequency range is a continuous frequency range, in which case the preset position in the third frequency range may be the center frequency position of the third frequency range. Fig.11 As shown, the terminal device is configured with carrier 1 and carrier 2, carrier 1 is configured with BWP1~BWP4, and carrier 2 is configured with BWPa~BWPd. The third frequency band range can be the frequency band range between the lowest frequency point and the highest frequency point occupied by multiple BWPs on carrier 1, or it can also be the frequency band range between the lowest frequency point and the highest frequency point occupied by multiple BWPs on carrier 2. Then, the reference DC position can be located at the center frequency point position DC8 of the frequency band range occupied by multiple BWPs on carrier 1, or it can also be located at the center frequency point position DC9 of the frequency band range occupied by multiple BWPs on carrier 2.

[0172] In another case, the third frequency band range includes a plurality of discrete sub-frequency band ranges. In this case, the preset position in the third frequency band range may include a central frequency point position of each of the plurality of discrete sub-frequency band ranges.

[0173] Method 7

[0174] In this mode 7, the terminal device determines the reference DC position according to all BWP configurations on multiple carriers.

[0175] In this case, the reference DC position reported by the terminal device is related to the BWP configuration, but is not affected by the activation of the BWP.

[0176] In some embodiments, the terminal device may determine a reference DC configuration based on a frequency band range occupied by all BWPs on multiple carriers on the terminal device.

[0177] Similar to the frequency band ranges in Modes 4 to 6, the frequency band range occupied by all BWPs on the multiple carriers may also be a plurality of discrete sub-frequency band ranges, or may be a continuous frequency band range, for example, the frequency band range between the lowest frequency point and the highest frequency point occupied by all BWPs on the multiple carriers.

[0178] As an example, the reference DC position includes a preset position in the fourth frequency band range, and the fourth frequency band range is a frequency band range occupied by multiple BWPs configured on the multiple carriers.

[0179] In one case, the fourth frequency range is a continuous frequency range, in which case the preset position in the fourth frequency range may be the center frequency position of the fourth frequency range. Fig.11 As shown, the terminal device is configured with carrier 1 and carrier 2, carrier 1 is configured with BWP1~BWP4, carrier 2 is configured with BWPa~BWPd, the fourth frequency band range can be the frequency band range from the lowest frequency point to the highest frequency point occupied by BWP1~BWP4 and BWPa~BWPd, then the reference DC position can be located at the center frequency point position DC10 of the fourth frequency band range.

[0180] In another case, the fourth frequency band range includes a plurality of discrete sub-frequency band ranges. In this case, the preset position in the fourth frequency band range may include a center frequency point position of each of the plurality of discrete sub-frequency band ranges.

[0181] Method 8

[0182] In this mode 8, the terminal device can determine the reference DC position as a specific frequency point position.

[0183] For example, any frequency point position in the working frequency band, or any frequency point position in the activated BWP, or any frequency point position on a certain carrier, etc.

[0184] Method 9

[0185] In this mode 9, the terminal device can determine the reference DC position based on the first carrier and the second carrier in the first carrier set, wherein the first carrier is the carrier with the lowest frequency in the first carrier set, and the second carrier is the carrier with the highest frequency in the first carrier set.

[0186] Example 1: The first carrier set includes multiple uplink carriers configured by the network device.

[0187] For example, Fig.12 As shown, the terminal device is configured with uplink carriers 1 to 3, the uplink carrier with the lowest frequency is carrier 1, and the uplink carrier with the highest frequency is carrier 3, then the reference DC position can be a specific position between uplink carrier 1 and uplink carrier 3, such as the center frequency position DC position 1.

[0188] Example 2: The first carrier set includes multiple uplink carriers configured and activated by the network device.

[0189] For example, Fig.12 As shown, the terminal device is configured with uplink carriers 1 to 3, and the activated uplink carriers are uplink carrier 1 and uplink carrier 2. The uplink carrier with the lowest frequency that is configured and activated is carrier 1, and the uplink carrier with the highest frequency that is configured and activated is carrier 2. The reference DC position can be a specific position between uplink carrier 1 and uplink carrier 2, such as the center frequency position DC position 2.

[0190] Optionally, in Example 1 and Example 2, the uplink transmission and downlink reception of the terminal device do not share a common DC position, that is, the uplink transmission and downlink reception of the terminal device use independent DC positions. Using independent DC positions for uplink and downlink helps to avoid the impact of downlink CA on the uplink DC position.

[0191] Example 3: The first carrier set includes multiple uplink carriers configured by the network device, and multiple downlink carriers configured by the network device.

[0192] Example 4: The first carrier set includes multiple uplink carriers configured and activated by the network device, and multiple downlink carriers configured and activated by the network device.

[0193] Optionally, in Example 3 and Example 4, the uplink transmission and downlink reception of the terminal device share a common DC position. In this case, the influence of the downlink carrier needs to be considered when determining the uplink DC position.

[0194] Method 10

[0195] In this mode 10, the terminal device can be determined based on the first BWP and the second BWP in the first BWP set of the terminal device, wherein the first BWP is the BWP with the lowest frequency in the first BWP set, and the second BWP is the BWP with the highest frequency in the first BWP set.

[0196] Example 1: The first BWP set includes all uplink BWPs configured by the network device.

[0197] For example, Fig.12 As shown, the terminal device is configured with uplink carriers 1 to 3, uplink carrier 1 is configured with BWP1 and BWP4, uplink carrier 2 is configured with BWP2, and uplink carrier 3 is configured with BWP3, wherein the BWP with the lowest frequency among all BWPs configured by the terminal device is BWP1, and the BWP with the highest frequency is BWP3, then the reference DC position can be a specific position between BWP1 and BWP3, such as the center frequency position DC position 3.

[0198] Example 2: The first BWP set includes all uplink BWPs configured and activated by the network device.

[0199] For example, Fig.12 As shown, the terminal device is configured with uplink carriers 1 to 3, and uplink carrier 1 is configured with BWP1 and BWP4, wherein the activated BWP is BWP4, the BWP configured and activated on uplink carrier 2 is BWP2, and the BWP configured and activated on uplink carrier 3 is BWP3, wherein the BWP with the lowest frequency among all BWPs activated by the terminal device is BWP4, and the BWP with the highest frequency is BWP2, then the reference DC position can be a specific position between BWP4 and BWP2, such as the center frequency position DC position 4.

[0200] Optionally, in Example 1 and Example 2, the uplink transmission and downlink reception of the terminal device do not share a common DC position, that is, the uplink transmission and downlink reception of the terminal device use independent DC positions. Using independent DC positions for uplink and downlink helps to avoid the impact of downlink CA on the uplink DC position.

[0201] Example 3: The first BWP set includes all uplink BWPs configured by the network device, and all downlink BWPs configured by the network device.

[0202] Example 4: The first BWP set includes all uplink BWPs configured and activated by the network device, and all downlink BWPs configured by the network device.

[0203] Optionally, in Example 3 and Example 4, the uplink transmission and downlink reception of the terminal device share a common DC position. In this case, the influence of the downlink carrier needs to be considered when determining the uplink DC position.

[0204] It should be understood that the above method for determining the reference DC position is only an example. In other embodiments, the reference DC position may also be determined by other frequency point information, and the present application is not limited thereto.

[0205] In an embodiment of the present application, the terminal device may report to the network device a reference DC position determined based on at least one of the aforementioned methods 1 to 10.

[0206] In summary, the terminal device reports the DC position by means of reference DC position plus DC offset. In this way, when the DC position actually used is the reference DC position, there is no need to report the DC position. When the DC position actually used is adjusted, it is only necessary to report the frequency offset of the adjusted DC position relative to the reference DC position, thereby reducing signaling overhead.

[0207] Combination of the above Figures 6 to 12 , describes in detail the method embodiment of the present application, and the following is combined with Figures 13 to 17 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0208] Fig.13 FIG. 4 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Fig.13 As shown, the terminal device 400 includes:

[0209] The processing unit 410 is configured to determine at least one DC carrier position offset, wherein each DC carrier position offset of the at least one DC carrier position offset represents a frequency offset of a DC carrier position used by the terminal device relative to a reference DC carrier position;

[0210] The communication unit 420 is used to report the at least one DC carrier position offset to the network device.

[0211] Optionally, in some embodiments, each DC carrier position offset is a specific frequency offset value; or

[0212] Each DC carrier position offset is the number of specific frequency intervals; or

[0213] Each DC carrier position offset is the number of subcarriers.

[0214] Optionally, in some embodiments, the at least one DC carrier position offset is sent via at least one of the following signaling: radio resource control RRC signaling, media access control MAC signaling, and physical uplink control channel PUCCH.

[0215] Optionally, in some embodiments, the multiple carriers configured on the terminal device correspond to a single transmission link, the number of reference DC carrier positions is one, the at least one DC carrier position offset includes a DC carrier position offset, and the one reference DC carrier position and the one DC carrier position offset are used to determine the DC carrier position used by the single transmission link.

[0216] Optionally, in some embodiments, the multiple carriers configured on the terminal device correspond to multiple transmission links, the number of the reference DC carrier positions is one, the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmission link corresponds to a DC carrier position offset, each DC carrier position offset is a frequency offset relative to the one reference DC carrier position, the one reference DC carrier position and the DC carrier position offset corresponding to each transmission link are used to determine the DC carrier position used by each transmission link; or

[0217] The multiple carriers configured on the terminal device correspond to multiple transmission links, the number of the reference DC carrier positions is multiple, each transmission link corresponds to a reference DC carrier position, the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmission link corresponds to a DC carrier position offset, the reference DC carrier position and DC carrier position offset corresponding to each transmission link are used to determine the DC carrier position used by each transmission link.

[0218] Optionally, in some embodiments, the reference DC carrier position is determined according to at least one of the following:

[0219] The frequency band configuration on the terminal device, the carrier configuration on the terminal device, the bandwidth part BWP configuration on the terminal device, and the activated BWP configuration of the terminal device, wherein the frequency band configuration is used to configure the working frequency band of the terminal device, the carrier configuration is used to configure multiple carriers on the working frequency band, the BWP configuration is used to configure multiple BWPs on each of the multiple carriers, and the activated BWP configuration is used to configure an activated BWP among the multiple BWPs.

[0220] Optionally, in some embodiments, the reference DC carrier position is determined based on a first carrier and a second carrier in a first carrier set of the terminal device, wherein the first carrier is the carrier with the lowest frequency in the first carrier set, and the second carrier is the carrier with the highest frequency in the first carrier set.

[0221] Optionally, the first carrier set includes multiple uplink carriers configured by the network device; or

[0222] The first carrier set includes multiple uplink carriers configured and activated by the network device.

[0223] Optionally, the uplink transmission and downlink reception of the terminal device do not share a DC carrier position.

[0224] Optionally, in some embodiments, the first carrier set includes multiple uplink carriers configured by the network device, and multiple downlink carriers configured by the network device; or

[0225] The first carrier set includes a plurality of uplink carriers configured and activated by the network device, and a plurality of downlink carriers configured and activated by the network device.

[0226] Optionally, in some embodiments, the uplink transmission and downlink reception of the terminal device share a DC carrier position.

[0227] Optionally, in some embodiments, the reference DC carrier position is determined based on a first BWP and a second BWP in a first BWP set of the terminal device, wherein the first BWP is the BWP with the lowest frequency in the first BWP set, and the second BWP is the BWP with the highest frequency in the first BWP set.

[0228] Optionally, the first BWP set includes all uplink BWPs configured by the network device; or

[0229] The first BWP set includes all uplink BWPs configured and activated by the network device.

[0230] Optionally, the uplink transmission and downlink reception of the terminal device do not share a DC carrier position.

[0231] Optionally, in some embodiments, the first BWP set includes all uplink BWPs configured by the network device, and all downlink BWPs configured by the network device; or

[0232] The first BWP set includes all uplink BWPs configured and activated by the network device, and all downlink BWPs configured by the network device.

[0233] Optionally, in some embodiments, the uplink transmission and downlink reception of the terminal device share a DC carrier position.

[0234] Optionally, in some embodiments, the reference DC carrier position includes at least one specific DC carrier position.

[0235] Optionally, in some embodiments, the communication unit 420 is further configured to:

[0236] Sending first indication information to the network device, where the first indication information is used to indicate a reference DC carrier position among multiple DC carrier positions.

[0237] Optionally, in some embodiments, the first indication information includes a first bit map, the first bit map includes multiple bits, each bit of the multiple bits corresponds to a DC carrier position among the multiple DC carrier positions, and the value of each bit is used to indicate whether the corresponding DC carrier position is a reference DC carrier position.

[0238] Optionally, in some embodiments, the first indication information is via at least one of the following signaling: RRC signaling, MAC signaling, PUCCH.

[0239] Optionally, in some embodiments, the communication unit 420 is further configured to:

[0240] Send first capability information to the network device, where the first capability information is used to indicate whether the terminal device supports reporting of the DC carrier position under carrier aggregation CA.

[0241] Optionally, in some embodiments, the first capability information is transmitted via at least one of the following signaling: RRC signaling, MAC signaling, and PUCCH.

[0242] Optionally, in some embodiments, the first capability information is also used to determine a reference DC carrier position among multiple DC carrier positions.

[0243] Optionally, in some embodiments, if the first capability information indicates that the terminal device supports reporting of the DC carrier position under CA, the reference DC carrier position is the first DC carrier position among the multiple DC carrier positions; or, if the first capability information indicates that the terminal device does not support reporting of the DC carrier position under CA, the reference DC carrier position is the second DC carrier position among the multiple DC carrier positions, wherein the first DC carrier position and the second DC carrier position are different.

[0244] Optionally, in some embodiments, the multiple DC carrier positions are predefined, or reported by the terminal device to the network device.

[0245] Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0246] It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 400 are respectively to implement Figures 6 to 12 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0247] Fig.14 It is a schematic block diagram of a network device according to an embodiment of the present application. Fig.14 The network device 500 includes:

[0248] The communication unit 510 is configured to receive at least one DC carrier position offset sent by a terminal device, wherein each DC carrier position offset of the at least one DC carrier position offset represents a frequency offset of a DC carrier position used by the terminal device relative to a reference DC carrier position;

[0249] The processing unit 520 is used to determine the DC carrier position used by the terminal device according to the reference DC carrier position and the at least one DC carrier position offset.

[0250] Optionally, in some embodiments, each DC carrier position offset is a specific frequency offset value; or

[0251] Each DC carrier position offset is the number of specific frequency intervals; or

[0252] Each DC carrier position offset is the number of subcarriers.

[0253] Optionally, in some embodiments, the at least one DC carrier position offset is sent via at least one of the following signaling: radio resource control RRC signaling, media access control MAC signaling, and physical uplink control channel PUCCH.

[0254] Optionally, in some embodiments, the multiple carriers configured on the terminal device correspond to a single transmission link, the number of reference DC carrier positions is one, the at least one DC carrier position offset includes a DC carrier position offset, and the one reference DC carrier position and the one DC carrier position offset are used to determine the DC carrier position used by the single transmission link.

[0255] Optionally, in some embodiments, the multiple carriers configured on the terminal device correspond to multiple transmission links, the number of the reference DC carrier positions is one, the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmission link corresponds to a DC carrier position offset, each DC carrier position offset is a frequency offset relative to the one reference DC carrier position, the one reference DC carrier position and the DC carrier position offset corresponding to each transmission link are used to determine the DC carrier position used by each transmission link; or

[0256] The multiple carriers configured on the terminal device correspond to multiple transmission links, the number of the reference DC carrier positions is multiple, each transmission link corresponds to a reference DC carrier position, the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmission link corresponds to a DC carrier position offset, the reference DC carrier position and DC carrier position offset corresponding to each transmission link are used to determine the DC carrier position used by each transmission link.

[0257] Optionally, in some embodiments, the reference DC carrier position is determined according to at least one of the following:

[0258] The frequency band configuration on the terminal device, the carrier configuration on the terminal device, the bandwidth part BWP configuration on the terminal device, and the activated BWP configuration of the terminal device, wherein the frequency band configuration is used to configure the working frequency band of the terminal device, the carrier configuration is used to configure multiple carriers on the working frequency band, the BWP configuration is used to configure multiple BWPs on each of the multiple carriers, and the activated BWP configuration is used to configure an activated BWP among the multiple BWPs.

[0259] Optionally, in some embodiments, the reference DC carrier position is determined based on a first carrier and a second carrier in a first carrier set of the terminal device, wherein the first carrier is the carrier with the lowest frequency in the first carrier set, and the second carrier is the carrier with the highest frequency in the first carrier set.

[0260] Optionally, the first carrier set includes multiple uplink carriers configured by the network device; or

[0261] The first carrier set includes multiple uplink carriers configured and activated by the network device.

[0262] Optionally, the uplink transmission and downlink reception of the terminal device do not share a DC carrier position.

[0263] Optionally, in some embodiments, the first carrier set includes multiple uplink carriers configured by the network device, and multiple downlink carriers configured by the network device; or

[0264] The first carrier set includes a plurality of uplink carriers configured and activated by the network device, and a plurality of downlink carriers configured and activated by the network device.

[0265] Optionally, in some embodiments, the uplink transmission and downlink reception of the terminal device share a DC carrier position.

[0266] Optionally, in some embodiments, the reference DC carrier position is determined based on a first BWP and a second BWP in a first BWP set of the terminal device, wherein the first BWP is the BWP with the lowest frequency in the first BWP set, and the second BWP is the BWP with the highest frequency in the first BWP set.

[0267] Optionally, the first BWP set includes all uplink BWPs configured by the network device; or

[0268] The first BWP set includes all uplink BWPs configured and activated by the network device.

[0269] Optionally, the uplink transmission and downlink reception of the terminal device do not share a DC carrier position.

[0270] Optionally, in some embodiments, the first BWP set includes all uplink BWPs configured by the network device, and all downlink BWPs configured by the network device; or

[0271] The first BWP set includes all uplink BWPs configured and activated by the network device, and all downlink BWPs configured by the network device.

[0272] Optionally, in some embodiments, the uplink transmission and downlink reception of the terminal device share a DC carrier position.

[0273] Optionally, in some embodiments, the reference DC carrier position includes at least one specific DC carrier position.

[0274] Optionally, in some embodiments, the communication unit 510 is further configured to:

[0275] Receive first indication information sent by the terminal device, where the first indication information is used to indicate a reference DC carrier position among multiple DC carrier positions.

[0276] Optionally, in some embodiments, the first indication information includes a first bit map, the first bit map includes multiple bits, each bit of the multiple bits corresponds to a DC carrier position among the multiple DC carrier positions, and the value of each bit is used to indicate whether the corresponding DC carrier position is a reference DC carrier position.

[0277] Optionally, in some embodiments, the first indication information is via at least one of the following signaling: RRC signaling, MAC signaling, PUCCH.

[0278] Optionally, in some embodiments, the communication unit 510 is further configured to:

[0279] Receive first capability information sent by the terminal device, where the first capability information is used to indicate whether the terminal device supports reporting of the DC carrier position under carrier aggregation CA.

[0280] Optionally, in some embodiments, the first capability information is transmitted via at least one of the following signaling: RRC signaling, MAC signaling, and PUCCH.

[0281] Optionally, in some embodiments, the first capability information is also used to determine a reference DC carrier position among multiple DC carrier positions.

[0282] Optionally, in some embodiments, if the first capability information indicates that the terminal device supports reporting of the DC carrier position under CA, the reference DC carrier position is the first DC carrier position among the multiple DC carrier positions; or, if the first capability information indicates that the terminal device does not support reporting of the DC carrier position under CA, the reference DC carrier position is the second DC carrier position among the multiple DC carrier positions, wherein the first DC carrier position and the second DC carrier position are different.

[0283] Optionally, in some embodiments, the multiple DC carrier positions are predefined, or reported by the terminal device to the network device.

[0284] Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0285] It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 500 are respectively to implement Figures 6 to 12 For the sake of brevity, the corresponding processes of the network device in the method 200 are not described in detail here.

[0286] Fig.15 It is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. Fig.15 The communication device 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0287] Alternatively, if Fig.15 As shown, the communication device 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0288] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0289] Alternatively, if Fig.15 As shown, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0290] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of the antennas may be one or more.

[0291] Optionally, the communication device 600 may specifically be a network device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0292] Optionally, the communication device 600 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0293] Fig.16 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.16 The chip 700 shown includes a processor 710, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0294] Alternatively, if Fig.16 As shown, the chip 700 may further include a memory 720. The processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0295] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0296] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0297] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0298] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0299] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0300] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0301] Fig.17 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. Fig.17 As shown, the communication system 900 includes a terminal device 910 and a network device 920 .

[0302] Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0303] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0304] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0305] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0306] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0307] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0308] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0309] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0310] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0311] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0312] The embodiment of the present application also provides a computer program.

[0313] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0314] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0315] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0316] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0317] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0318] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0319] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0320] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0321] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for reporting a DC carrier position, characterized in that: include: The terminal device determines at least one DC carrier position offset, wherein each of the at least one DC carrier position offset represents a frequency offset of a DC carrier position used by the terminal device relative to a reference DC carrier position; The terminal device reports the at least one DC carrier position offset to the network device.

2. The method according to claim 1, characterized in that Each DC carrier position offset is the number of subcarriers, and at least one DC carrier position offset is sent via radio resource control RRC signaling.

3. The method according to claim 1 or 2, characterized in that: The multiple carriers configured on the terminal device correspond to a single transmission link, the number of the reference DC carrier positions is one, the at least one DC carrier position offset includes a DC carrier position offset, and the one reference DC carrier position and the one DC carrier position offset are used to determine the DC carrier position used by the single transmission link.

4. The method according to claim 1 or 2, characterized in that: The multiple carriers configured on the terminal device correspond to multiple transmission links, the number of the reference DC carrier positions is one, the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmission link corresponds to a DC carrier position offset, each DC carrier position offset is a frequency offset relative to the one reference DC carrier position, the one reference DC carrier position and the DC carrier position offset corresponding to each transmission link are used to determine the DC carrier position used by each transmission link; or The multiple carriers configured on the terminal device correspond to multiple transmission links, the number of the reference DC carrier positions is multiple, each transmission link corresponds to a reference DC carrier position, the at least one DC carrier position offset includes multiple DC carrier position offsets, each transmission link corresponds to a DC carrier position offset, the reference DC carrier position and DC carrier position offset corresponding to each transmission link are used to determine the DC carrier position used by each transmission link.

5. The method according to any one of claims 1 to 3, characterized in that: The reference DC carrier position is determined according to at least one of the following: The frequency band configuration on the terminal device, the carrier configuration on the terminal device, the bandwidth part BWP configuration on the terminal device, and the activated BWP configuration of the terminal device, wherein the frequency band configuration is used to configure the working frequency band of the terminal device, the carrier configuration is used to configure multiple carriers on the working frequency band, the BWP configuration is used to configure multiple BWPs on each of the multiple carriers, and the activated BWP configuration is used to configure an activated BWP among the multiple BWPs.

6. The method according to claim 5, characterized in that The reference DC carrier position is determined based on the first carrier and the second carrier in the first carrier set of the terminal device, wherein the first carrier is the carrier with the lowest frequency in the first carrier set, and the second carrier is the carrier with the highest frequency in the first carrier set.

7. The method according to claim 6, characterized in that The first carrier set includes multiple uplink carriers configured by the network device; or The first carrier set includes a plurality of uplink carriers configured by the network device, and a plurality of downlink carriers configured by the network device; or The first carrier set includes a plurality of uplink carriers configured and activated by the network device, and a plurality of downlink carriers configured and activated by the network device.

8. The method according to claim 5, characterized in that The reference DC carrier position is determined based on the first BWP and the second BWP in the first BWP set of the terminal device, wherein the first BWP is the BWP with the lowest frequency in the first BWP set, and the second BWP is the BWP with the highest frequency in the first BWP set.

9. The method according to claim 8, characterized in that The first BWP set includes all uplink BWPs configured by the network device; or The first BWP set includes all uplink BWPs configured and activated by the network device; The first BWP set includes all uplink BWPs configured by the network device, and all downlink BWPs configured by the network device; or The first BWP set includes all uplink BWPs configured and activated by the network device, and all downlink BWPs configured by the network device.

10. The method according to any one of claims 1 to 4, characterized in that The reference DC carrier position includes at least one specific DC carrier position.

11. The method according to any one of claims 1 to 10, characterized in that The method further comprises: The terminal device sends first indication information to the network device, where the first indication information is used to indicate a reference DC carrier position among multiple DC carrier positions.

12. The method according to claim 11, characterized in that The first indication information is provided through at least one of the following signaling: RRC signaling, MAC signaling, and PUCCH.

13. The method according to any one of claims 1 to 12, characterized in that The method further comprises: The terminal device sends first capability information to the network device, where the first capability information is used to indicate whether the terminal device supports reporting of the DC carrier position under carrier aggregation CA.

14. The method according to claim 13, characterized in that The first capability information is transmitted through at least one of the following signaling: RRC signaling, MAC signaling, and PUCCH.

15. A method for reporting a DC carrier position, characterized in that: include: The network device receives at least one DC carrier position offset sent by the terminal device, wherein each DC carrier position offset of the at least one DC carrier position offset represents a frequency offset of a DC carrier position used by the terminal device relative to a reference DC carrier position; The network device determines the DC carrier position used by the terminal device based on the reference DC carrier position and the at least one DC carrier position offset.

16. The method according to claim 15, characterized in that Each DC carrier position offset is the number of subcarriers, and at least one DC carrier position offset is sent via radio resource control RRC signaling.

17. The method according to claim 15 or 16, characterized in that The reference DC carrier position is determined based on the first carrier and the second carrier in the first carrier set of the terminal device, wherein the first carrier is the carrier with the lowest frequency in the first carrier set, and the second carrier is the carrier with the highest frequency in the first carrier set.

18. The method according to claim 17, characterized in that The first carrier set includes multiple uplink carriers configured by the network device; or The first carrier set includes a plurality of uplink carriers configured by the network device, and a plurality of downlink carriers configured by the network device; or The first carrier set includes a plurality of uplink carriers configured and activated by the network device, and a plurality of downlink carriers configured and activated by the network device.

19. The method according to claim 15 or 16, characterized in that The reference DC carrier position is determined based on the first BWP and the second BWP in the first BWP set of the terminal device, wherein the first BWP is the BWP with the lowest frequency in the first BWP set, and the second BWP is the BWP with the highest frequency in the first BWP set.

20. The method according to claim 19, characterized in that The first BWP set includes all uplink BWPs configured by the network device; or The first BWP set includes all uplink BWPs configured and activated by the network device; The first BWP set includes all uplink BWPs configured by the network device, and all downlink BWPs configured by the network device; or The first BWP set includes all uplink BWPs configured and activated by the network device, and all downlink BWPs configured by the network device.

21. The method according to any one of claims 15 to 20, characterized in that The method further comprises: The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate a reference DC carrier position among multiple DC carrier positions.

22. The method according to any one of claims 15 to 21, characterized in that The method further comprises: The network device receives first capability information sent by the terminal device, where the first capability information is used to indicate whether the terminal device supports reporting of the DC carrier position under carrier aggregation CA.

23. A terminal device, characterized in that: include: a processing unit, configured to determine at least one DC carrier position offset, wherein each of the at least one DC carrier position offset represents a frequency offset of a DC carrier position used by the terminal device relative to a reference DC carrier position; A communication unit is used to report the at least one DC carrier position offset to a network device.

24. A network device, characterized in that: include: A communication unit, configured to receive at least one DC carrier position offset sent by a terminal device, wherein each of the at least one DC carrier position offset represents a frequency offset of a DC carrier position used by the terminal device relative to a reference DC carrier position; A processing unit is used to determine the DC carrier position used by the terminal device based on the reference DC carrier position and the at least one DC carrier position offset.

25. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 14.

26. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 15 to 22.

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