Multi-carrier transmission method and device

Abstract

Provided are a multi-carrier transmission method and device, relating to the technical field of communications, the method comprising: a terminal device sending a signal to a network device through a first SRS resource on a first time domain unit and a first carrier, and sending a signal to the network device through a second SRS resource on a second time domain unit and the first carrier, the first SRS resource and the second SRS resource respectively comprise different antenna ports, and the second time domain unit is located behind the first time domain unit; the terminal equipment does not perform uplink or downlink transmission on a first time period and a second carrier, the first time period comprises the second time domain unit and a second time period, and the second time period is adjacent to the second time domain unit. According to the scheme, when one carrier is subjected to antenna switching, other affected carriers can be scheduled.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a multi-carrier transmission method and device. Background Art

[0002] Both new radio (NR) and long term evolution (LTE) can support carrier aggregation (CA), and each carrier participating in carrier aggregation can be called a component carrier (CC) or a member carrier. Different duplex modes may exist for different member carriers. For example, one member carrier is in the TDD band and another member carrier is in the FDD band. In addition, different member carriers may simultaneously perform uplink or downlink signal transmission. For example, one member carrier is performing uplink transmission while another member carrier is performing downlink signal transmission.

[0003] Due to the complexity and cost constraints of the RF link, different carriers often use the same set of RF links to achieve multiplexing of each antenna through antenna switching. However, after the antenna is switched, the SRS antenna switching capability of the TDD band carrier is not supported by other carriers, and the terminal device cannot send uplink information on other carriers. In addition, the SRS antenna switching of the TDD band carrier will cause the RF link to be unmatched for the downlink signal reception of other carriers, making it impossible for the terminal device to receive downlink information on other carriers.

[0004] Therefore, when antenna switching occurs on one carrier, how to schedule other affected carriers is an urgent problem to be solved. Summary of the invention

[0005] The present application provides a multi-carrier transmission method and device, which can schedule other affected carriers when antenna switching occurs on one carrier.

[0006] In a first aspect, a multi-carrier transmission method is provided, comprising: a terminal device sends a signal to a network device via a first SRS resource on a first time domain unit and a first carrier, and sends a signal to the network device via a second SRS resource on a second time domain unit and the first carrier, wherein the first SRS resource and the second SRS resource respectively include different antenna ports, and the second time domain unit is located after the first time domain unit; the terminal device does not perform uplink or downlink transmission on a first time period and a second carrier, wherein the first time period includes the second time domain unit and the second time period, and the second time period is adjacent to the second time domain unit.

[0007] Based on the above scheme, when antenna switching occurs on a certain carrier, other affected carriers can be constrained not to send uplink signals and receive downlink signals. Since the first time period includes both the time domain unit where the antenna switching occurs and the second time period adjacent to the time domain unit, the multi-carrier transmission method provided in the embodiment of the present application can schedule other affected carriers not to perform uplink transmission and downlink transmission for a period of time longer than the antenna switching when the antenna is switched, thereby effectively avoiding transmission failures.

[0008] In combination with the first aspect, in some implementations of the first aspect, the second time period is before the second time domain unit and / or after the second time domain unit.

[0009] In combination with the first aspect, in some implementations of the first aspect, the method further includes: the terminal device reporting capability information to the network device, the capability information including a value of the first time period.

[0010] The terminal device can report the first time period to the network device, and the first time period includes both the time domain unit where the antenna switch is located and the time added relative to the time domain unit where the antenna switch is located. The multi-carrier transmission method provided in the embodiment of the present application can avoid the network device from having transmission errors due to the loss of the time domain unit where the antenna switch is located, thereby improving security.

[0011] In combination with the first aspect, in some implementations of the first aspect, a value of the first time period has a first association relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0012] In combination with the first aspect, in some implementations of the first aspect, the first association relationship includes: the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0013] In combination with the first aspect, in some implementations of the first aspect, the method further includes: the terminal device reporting capability information to the network device, the capability information including a value of the second time period.

[0014] The terminal device can only report the second time period to the network device. The second time period is the time added relative to the time domain unit where the antenna switch is located. Since the network device already knows the time domain unit where the antenna switch is located, only reporting the second time period can reduce the reporting overhead of the terminal device.

[0015] In combination with the first aspect, in some implementations of the first aspect, a value of the second time period has a second association relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0016] In combination with the first aspect, in some implementations of the first aspect, the second association relationship includes: the second time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the second carrier is an uplink carrier, wherein the method further includes: the terminal device does not expect to send an uplink signal to the network device.

[0018] In combination with the first aspect, in some implementations of the first aspect, the first time period includes any one of 30 microseconds (us), 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols, or 14 symbols; or the second time period includes any one of 30us, 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols, or 14 symbols.

[0019] In combination with the first aspect, in some implementations of the first aspect, the second carrier is a downlink carrier, wherein the method further includes: the terminal device does not expect to receive a downlink signal in the first time period.

[0020] In combination with the first aspect, in some implementations of the first aspect, the first time period includes any one of 30us, 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols, or the second time period includes any one of 30us, 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

[0021] In combination with the first aspect, in some implementations of the first aspect, the first carrier is an uplink carrier in a TDD frequency band.

[0022] In combination with the first aspect, in some implementations of the first aspect, the second carrier is a carrier in an FDD frequency band.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the terminal device does not perform uplink or downlink transmission in the first time period and the second carrier, including: the terminal device does not perform uplink or downlink transmission through the second SRS resource in the first time period and the second carrier.

[0024] In a second aspect, a multi-carrier transmission method is provided, comprising: a terminal device sends a signal to a network device through a first SRS resource in a first time domain unit and a first carrier, and sends a signal to the network device through a second SRS resource in a second time domain unit and the first carrier, wherein the first SRS resource and the second SRS resource respectively include different antenna ports, and the second time domain unit is located after the first time domain unit; the terminal device sends a signal to the network device through a third SRS resource in the second time domain unit and the second carrier, wherein there is an association relationship between an index of the third SRS resource on the second carrier and an index of the second SRS resource on the first carrier.

[0025] Based on the above solution, when antenna switching occurs on a carrier, other affected carriers can be scheduled to use the switched antenna ports for uplink transmission, avoiding the situation where some carriers cannot work during antenna switching, thereby improving transmission efficiency.

[0026] In combination with the second aspect, in some implementations of the second aspect, the association relationship includes that an index of the third SRS resource on the second carrier is the same as an index of the second SRS resource on the first carrier.

[0027] In combination with the second aspect, in certain implementations of the second aspect, before the terminal device sends a signal to the network device through the second SRS resource on the second time domain unit and the second carrier, the method also includes: the terminal device receives configuration information from the network device, and the configuration information includes an association relationship between an index of the third SRS resource on the second carrier and an index of the second SRS resource on the first carrier.

[0028] In combination with the second aspect, in certain implementations of the second aspect, the method also includes: the terminal device sends a signal to the network device through a fourth SRS resource on the first time domain unit and the second carrier, wherein there is an association relationship between the index of the fourth SRS resource on the second carrier and the index of the first SRS resource on the first carrier.

[0029] In combination with the second aspect, in certain implementations of the second aspect, an index of the fourth SRS resource on the second carrier is the same as an index of the first SRS resource on the first carrier.

[0030] In combination with the second aspect, in certain implementations of the second aspect, the method also includes: the terminal device does not perform downlink transmission in the first time period and the second carrier, wherein the first time period includes the second time domain unit and the second time period, and the second time period is adjacent to the second time domain unit.

[0031] In combination with the second aspect, in some implementations of the second aspect, the method further includes: the terminal device reports capability information to the network device, and the capability information includes a value of the first time period.

[0032] The terminal device can report the first time period to the network device, and the first time period includes both the time domain unit where the antenna switch is located and the time added relative to the time domain unit where the antenna switch is located. The multi-carrier transmission method provided in the embodiment of the present application can avoid the network device from having transmission errors due to the loss of the time domain unit where the antenna switch is located, thereby improving security.

[0033] In combination with the second aspect, in some implementations of the second aspect, a value of the first time period has a first association relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0034] In combination with the second aspect, in some implementations of the second aspect, the first association relationship includes: the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0035] In combination with the second aspect, in some implementations of the second aspect, the method further includes: the terminal device reporting capability information to the network device, the capability information including a value of the second time period.

[0036] The terminal device can only report the second time period to the network device. The second time period is the time added relative to the time domain unit where the antenna switch is located. Since the network device already knows the time domain unit where the antenna switch is located, only reporting the second time period can reduce the reporting overhead of the terminal device.

[0037] In combination with the second aspect, in some implementations of the second aspect, a value of the second time period has a second association relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0038] In combination with the second aspect, in some implementations of the second aspect, the second association relationship includes: the second time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0039] In combination with the second aspect, in some implementations of the second aspect, the first time period includes any one of 30 microseconds (us), 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols; or, the second time period includes any one of 30us, 100us, 200us, 300us, 500u, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

[0040] In combination with the second aspect, in certain implementations of the second aspect, the terminal device does not perform downlink transmission in the first time period and the second carrier, including: the terminal device does not perform downlink transmission through the second SRS resource in the first time period and the second carrier.

[0041] In combination with the second aspect, in some implementations of the second aspect, the first carrier is an uplink carrier in a TDD frequency band.

[0042] In combination with the second aspect, in some implementations of the second aspect, the second carrier is a carrier in an FDD frequency band.

[0043] In combination with the second aspect, in some implementations of the second aspect, the first carrier is equivalent to the first serving cell, and the second carrier is equivalent to the second serving cell.

[0044] For example, if the terminal device is configured with multiple serving cells, and for a group of cells belonging to a frequency band that is signaled to be switched together in txSwitchWithAnotherBand, the terminal device does not want to transmit SRS and SRS / PUSCH / PUCCH / PRACH simultaneously on different antenna ports.

[0045] In a third aspect, a communication device is provided, which may be a terminal device, or a device or module for executing the functions of a terminal device.

[0046] In one possible implementation, the communication device may include a module or unit corresponding to each of the methods / operations / steps / actions described in the first aspect. The module or unit may be a hardware circuit, software, or a combination of a hardware circuit and software.

[0047] In another possible implementation, the communication device may include a module or unit corresponding to the method / operation / step / action described in the second aspect, and the module or unit may be a hardware circuit, or software, or a combination of hardware circuit and software.

[0048] In a fourth aspect, a communication device is provided, comprising a processor, wherein the processor is used to enable the communication device to execute the method described in the first aspect and any possible embodiment of the first aspect by executing a computer program or instruction, or by a processing circuit; or to enable the communication device to execute the method described in the second aspect and any possible embodiment of the second aspect.

[0049] In a possible implementation, the communication device further includes a memory for storing the computer program or instruction.

[0050] In a possible implementation manner, the communication device further includes a communication interface, which is used to input and / or output signals.

[0051] In a fifth aspect, a communication device is provided, comprising a processing circuit and an input / output interface, the input / output interface being used to input and / or output signals, the processing circuit being used to execute the method described in the first aspect and any possible embodiment of the first aspect; or the processing circuit being used to execute the method described in the second aspect and any possible embodiment of the second aspect.

[0052] In a sixth aspect, a computer-readable storage medium is provided, on which a computer program or instruction is stored. When the computer program or the instruction is run on a computer, the method described in the first aspect and any possibility of the first aspect is executed; or, the method described in the second aspect and any possibility of the second aspect is executed.

[0053] In the seventh aspect, a computer program product is provided, comprising instructions, which, when executed on a computer, cause the method described in the first aspect and any possible method of the first aspect to be executed; or, cause the method described in the second aspect and any possible method of the second aspect to be executed.

[0054] The description of the beneficial effects of any one of the third aspect to the seventh aspect etc. may refer to the description of the beneficial effects of the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of a communication system to which an embodiment of the present application is applicable.

[0056] Figure 2 It is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

[0057] Figure 3 This is a hardware diagram of the terminal device that supports 2T4R antenna switching.

[0058] Figure 4 It is a schematic flow chart of a multi-carrier transmission method provided in an embodiment of the present application.

[0059] Figure 5 It is a schematic flowchart of another multi-carrier transmission method provided in an embodiment of the present application.

[0060] Figure 6 It is a schematic block diagram of a communication device provided in an embodiment of the present application.

[0061] Figure 7 It is a schematic block diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0063] The present application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0064] In addition, in the embodiments of the present application, words such as "exemplary" and "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0065] The business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0066] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0067] The technical solutions of the embodiments of the present application can be applied to various communication systems, including but not limited to: LTE system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or NR system, narrowband Internet of Things (NB-IoT) system, enhanced machine-type communication (eMTC) system or LTE-machine to machine (LTE-machine-to-machine, LTE-M) system and future sixth generation (6G) mobile communication system, etc.

[0068] It should be noted that, in the embodiment of the present application, the term "communication" can also be described as "data transmission", "signal transmission", "information transmission" or "transmission", etc. In the embodiment of the present application, transmission can include sending or receiving. Exemplarily, the transmission can be uplink transmission, for example, the terminal device can send a signal to the network device; the transmission can also be downlink transmission, for example, the network device can send a signal to the terminal device.

[0069] To facilitate understanding of the embodiments of the present application, first Figure 1 A communication system applicable to an embodiment of the present application is described in detail. Figure 1 FIG. 1 is a schematic diagram showing a communication system to which the embodiment of the present application is applicable. Figure 1 As shown, the communication system 100 may include a network device 110 and a terminal device 120 .

[0070] The network device 110 may be a device for communicating with the terminal device 120, for example, a base station for accessing the terminal device 120 to a radio access network (RAN). A base station may sometimes also be referred to as an access network device or an access network node. It is understandable that in systems using different wireless access technologies, the names of devices having base station functions may be different. For ease of description, in the embodiments of the present application, devices that provide wireless communication access functions for terminal devices are collectively referred to as base stations. In the embodiment of the present application, the network device 110 includes but is not limited to: an evolved node B (eNB or eNodeB) in LTE, a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home evolved node B, or a home node B, a baseband unit (BBU), an access point, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP) in a wireless fidelity (WIFI) system, etc. It can also be a next generation node base station (gNB) or a transmission point (TRP or TP) in a 5G system, one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), and network equipment in future 6G networks, etc.

[0071] In some deployments, the gNB may include a centralized unit (CU) and a distributed unit (DU). The gNB may also include a radio unit (RU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU implements the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers, and the DU implements the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, under this architecture, high-level signaling such as RRC layer signaling can also be considered to be sent by the DU, or by the DU+CU. It can be understood that the network device 110 can be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into a network device in an access network (radio access network, RAN), and can also be divided into a network device in a core network (core network, CN), which is not limited in this application.

[0072] In the embodiment of the present application, the device for implementing the function of the network device may be a network device, or may be a device capable of supporting the network device to implement the function, such as a chip system. In the technical solution of the embodiment of the present application, the device for implementing the function of the network device is a network device, and the network device is a base station as an example to describe the technical solution provided by the embodiment of the present application.

[0073] The terminal device 120 may be any device with wireless transceiver function. The terminal device 120 may also be referred to as user equipment (UE), access terminal, terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless network device, user agent or user device. In the embodiment of the present application, the terminal device 120 includes but is not limited to: cellular phone, cordless phone, session initiation protocol (SIP) phone, smart phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other device connected to a wireless modem, vehicle-mounted device, wearable device, drone device, terminal device in the Internet of Things or Internet of Vehicles, and any form of terminal in the future network, relay user equipment or terminal in the future evolved public land mobile communication network (PLMN), etc. The terminal device 120 may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a terminal device in industrial control, a terminal device in self driving, a terminal device in remote medical, a terminal device in a smart grid, a terminal device in a smart city, a terminal device in a smart home, etc., and the embodiments of the present application are not limited to this.

[0074] In the embodiment of the present application, the device for realizing the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system. The chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solution of the embodiment of the present application, the device for realizing the function of the terminal device is a terminal device, and the terminal device is a UE as an example to describe the technical solution provided by the embodiment of the present application.

[0075] The network device 110 and the terminal device 120 may be communication devices in a standalone (SA) architecture or a non-standalone (NSA) architecture, which is not limited in the embodiments of the present application.

[0076] It should be understood that Figure 1 This is a simplified schematic diagram for ease of understanding only. The communication system 100 may also include other network devices or other terminal devices. Figure 1 Not drawn in.

[0077] The network device 110 and the terminal device 120 can communicate via a wireless link. The transmission link from the network device 110 to the terminal device 120 can be called a downlink (DL) or a downlink channel, which is used to transmit a downlink signal. The transmission link from the terminal device 120 to the network device 110 can be called an uplink (UL) or an uplink channel, which is used to transmit an uplink signal. Exemplarily, the network device 110 can send a downlink reference signal, such as a cell-specific reference signal (CRS) and a UE-specific reference signal (UE-specific reference signal) to the terminal device 120 via a downlink channel for measurement of channel state information, data demodulation, beam training, time-frequency parameter tracking, etc. The terminal device 120 can send an uplink reference signal, such as a sounding reference signal (SRS) and a demodulation reference signal (DMRS) to the network device 110 via an uplink channel for uplink and downlink channel measurement, data demodulation, etc. The network device 110 and the terminal device 120 may also perform downlink data transmission via a downlink channel and perform uplink data transmission via an uplink channel.

[0078] In the embodiment of the present application, the network device 110 provides services for the cell, and the terminal device 110 uses the cell, for example Figure 1 The transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell 130 shown communicate with the network device 110. The network device 110 may be a macro base station, a micro base station, a relay station, an access point, etc. The cell 130 may belong to a macro base station, or to a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. Small cells are relative to macro cells. Macro cells generally have a larger coverage area (e.g., a radius of more than 500 meters) and high transmission power, while small cells have the characteristics of a small coverage area (e.g., a radius of tens of meters) and low transmission power, and are suitable for providing high-speed data transmission services.

[0079] In addition, multiple cells can work at the same frequency on a carrier in an LTE system or a 5G system at the same time. In some special scenarios, the above-mentioned carrier and cell concepts can also be considered equivalent. For example, in a carrier aggregation (CA) scenario, when a secondary carrier is configured for a UE, the carrier index of the secondary carrier and the cell identification (cell ID) of the secondary cell working on the secondary carrier are carried at the same time. In this case, the concepts of carrier and cell can be considered equivalent, for example, UE accessing a carrier is equivalent to accessing a cell.

[0080] The network device 110 or the terminal device 120 may be configured with multiple antennas (ANT) for communication. The multiple antennas may include at least one transmitting antenna (Tx) for sending signals and at least one receiving antenna (Rx) for receiving signals. In addition, the network device 110 or the terminal device 120 further includes a transmitter chain and a receiver chain. It can be understood by those skilled in the art that they may include multiple components related to signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers or antennas, etc.).

[0081] For ease of understanding, Figure 2 A schematic structural diagram of a terminal device is shown. Figure 2 The terminal device 200 shown may be Figure 1 A specific example of the terminal device 120 in FIG. Figure 2 As shown, the terminal device 200 may include a baseband processor 210, a radio frequency processing unit 220, a power amplifier (PA) 230, a low noise amplifier (LNA) 280, a transmit filter 240, a receive filter 270, a duplexer 250, an antenna 260, etc.

[0082] The antenna 260 is used to receive and transmit radio frequency signals. The duplexer 250 is used to separate the transmit signal and the receive signal. The power amplifier 230 is located on the transmit path and is used to amplify the signal to be transmitted. The low noise amplifier 280 is located on the receive path and is used to amplify the signal received by the antenna. The radio frequency processing unit 220 is used to process radio frequency signals, such as mixing and demodulating the received radio frequency signals, or converting the transmitted data signals into radio frequency signals. The baseband processor 210 is used to receive baseband signals and perform demodulation, interleaving, decryption, channel decoding and other processing, or to encode, interleave, encrypt, modulate and other processing of the data to be transmitted to form a baseband signal.

[0083] When receiving a signal, the antenna 260 converts the high-frequency electromagnetic waves sent by a network device such as a base station into a high-frequency signal current and sends it to the duplexer 250. The duplexer 250 has different frequency bands, can filter the frequencies of the transmission signal (i.e., the transmission signal) and the reception signal at the same time, and has the function of preventing the transmission circuit (i.e., the transmission circuit) from flowing to the reception circuit. Here, the duplexer 250 is mainly used to isolate the transmission signal from the reception signal to ensure that the reception and transmission can work normally at the same time. The received signal after the duplexer 250 is sent to the receiving filter 270, and the receiving filter 270 can allow the radio frequency signal of the receiving frequency band to enter the receiving circuit, while suppressing the signals of other frequency bands. The radio frequency signal obtained after processing by the receiving filter 270 is sent to the low noise amplifier 280, and the low noise amplifier 280 can amplify the weak radio frequency signal to improve the signal-to-noise ratio of the receiver. The amplified radio frequency signal is sent to the radio frequency processing unit 220 for processing to obtain a baseband signal. The baseband signal is sent to the baseband processor 210 for processing, such as demodulating and decoding the baseband signal and transmitting the decoded digital signal to the upper layer system. Accordingly, the receiver chain of the terminal device 200 may include an antenna 260, a duplexer 250, a receiving filter 270, a low noise amplifier 280, a radio frequency processing unit 220, a baseband processor 210, etc.

[0084] The process of transmitting a signal is the opposite of the process of receiving a signal. When transmitting a signal, the baseband processor 210 processes the data signal to be transmitted to obtain a baseband signal, and sends the baseband signal to the RF processing unit 220. The RF processing unit 220 converts the baseband signal into an RF signal and sends it to the power amplifier 230. The power amplifier 230 can amplify the weak RF signal to meet the transmission power requirement. After the amplified RF signal is sequentially sent to the transmit filter 240 and the duplexer 250, the RF signal is radiated into space by the antenna 260. Accordingly, the transmitter chain of the terminal device 200 may include a baseband processor 210, an RF processing unit 220, a power amplifier 230, a transmit filter 240, a duplexer 250, an antenna 260, and the like.

[0085] It should be understood that the transmitter chain or receiver chain of the terminal device may also include other components such as an antenna matching circuit, a multiplexer, a demultiplexer, etc., which is not limited in the embodiments of the present application.

[0086] Under the condition that the network device 110 and the terminal device 120 are configured with multiple antennas, the network device 110 and the terminal device 120 can communicate through the multiple input multiple output (MIMO) technology (also known as multi-antenna technology). In MIMO technology, the transmitter and the receiver use multiple transmit antennas and multiple receive antennas to transmit and receive signals respectively. For example, in NR, according to the capabilities of the terminal device, the terminal device can support the following configurations of the number of Tx antennas and Rx antennas, including 1T2R, 2T4R, 1T4R, 2TR, 4T4R, etc. Where T represents the transmitting antenna, R represents the receiving antenna, 1T2R means that the terminal device has 1 transmitting antenna and 2 receiving antennas, and the remaining antenna configurations are similar. When the number of transmitting antennas of the terminal device is more than one, the terminal device can support uplink MIMO; accordingly, when the number of receiving antennas of the terminal device is more than one, the terminal device can support downlink MIMO.

[0087] To facilitate understanding of the embodiments of the present application, several concepts that may be involved are briefly described below.

[0088] 1. Sounding reference signal (SRS)

[0089] The sounding reference signal SRS is a reference signal used to measure the uplink channel. On the one hand, the network device can estimate the channel state of the uplink channel based on the SRS sent by the terminal to schedule the terminal device to transmit PUSCH, etc. On the other hand, for communication systems with channel reciprocity, such as TDD systems, SRS can also be used by network devices to estimate the channel state of the downlink channel based on channel reciprocity. After the network device obtains the downlink channel information corresponding to the terminal device, it can perform data transmission resource scheduling or precoding processing on the terminal device according to the channel information. For example, for a terminal device with 4 receiving antennas (assuming that the terminal device has 4 radio frequency links and has the ability to send 4 antennas, usually called a 4T4R terminal), SRS signals of 4 ports can be sent simultaneously, where each port corresponds to a receiving antenna. The network device performs channel measurement based on the SRS of the 4 ports sent by the terminal device, and the uplink channel corresponding to the 4 antennas of the terminal device can be obtained. Using the uplink and downlink channel reciprocity, the downlink channel corresponding to the 4 receiving antennas of the terminal device can be obtained.

[0090] 2. Antenna port (AP)

[0091] Antenna port is a logical concept, which refers to the logical port used for transmission. Antenna port can also be called port, SRS port or SRS antenna. An antenna port can be a physical transmit antenna or a combination of multiple physical transmit antennas. In both cases, the receiver usually does not decompose the signal from the same antenna port, because from the receiver's point of view, whether the signal is formed by a single physical transmit antenna or a combination of multiple physical transmit antennas, the reference signal (RS) corresponding to this antenna port defines this antenna port. When the above RS is SRS, the network device can obtain the channel estimate of this antenna port based on the SRS sent by the terminal device. Antenna ports can be used to carry SRS signals. Each port corresponds to an SRS signal. Different ports can be multiplexed by code division, frequency division, time division or space division.

[0092] 3. SRS resources and SRS resource sets

[0093] Typically, an SRS resource set contains one or more SRS resources for transmitting SRS. For example, an SRS resource may contain 1, 2, or 4 antenna ports. When the number of antenna ports is 1, each antenna port corresponds to a configured time domain, frequency domain, and code domain resource (also called a time-frequency code resource). When the number of antenna ports is 2, every 2 antenna ports correspond to a configured time-frequency code resource. When the number of antenna ports is 4, every 4 antenna ports correspond to a configured time-frequency code resource.

[0094] The antenna switching (AS) function of SRS is used in the scenario where the number of Tx antennas (or "transmitting antennas") of the terminal device in TDD is less than the number of Rx antennas (or "receiving antennas"), which can also be understood as the number of radio frequency (RF) links and power amplifiers of the terminal device is less than the number of antennas. Since the number of transmitting antennas of the terminal device is less than the number of receiving antennas, when the network device measures the channel state of the downlink channel corresponding to the receiving antenna through SRS, the terminal device needs to send the SRS corresponding to the receiving antenna to the network device through the transmitting antenna in the manner of antenna switching (also known as antenna rotation or antenna selection), so that the network device can estimate the channel state corresponding to all receiving antennas. That is, for the SRS resources in the SRS resource set used for antenna switching, the Tx channel that can be sent is sent through one SRS resource each time, and then switched to another Rx channel to send the SRS resources of the remaining Rx channel, and these SRS resources are sent on different orthogonal frequency division multiplexing (OFDM) symbols. By transmitting SRS resources on different antennas in turn, network devices can obtain channel state information of all Rx channels.

[0095] For example, for a 1T4R terminal device, there are 4 antennas but only 1 RF link. In this way, in order to obtain the complete channel information corresponding to all antennas, for a 1T4R terminal device, it is necessary to switch between different antennas to send SRS at different times, that is, SRS antenna selection. For example, 4 SRS resources can be configured for the terminal device, and each SRS resource corresponds to 1 antenna. At different SRS sending times, the 4 configured SRS resources are sent in turn using 4 antennas. Therefore, at least 4 SRS transmissions are required to obtain the channel information corresponding to the 4 antennas. It can be understood that the above 1 antenna corresponds to 1 antenna port.

[0096] Similarly, a 2T4R terminal device is configured with 4 antennas and 2 RF links. Two SRS resources can be configured for the terminal device, each SRS resource corresponds to one group of antennas, and each group of antennas contains two antennas. At different SRS transmission times, the two configured SRS resources are sent in turn using two groups of antennas. Therefore, at least two SRS transmissions are required to obtain the channel information corresponding to the four antennas. It can be understood that the above-mentioned one group of antennas containing two antennas corresponds to one antenna port.

[0097] SRS antenna switching and antenna switching are strongly related, and different hardware circuits determine different antenna switching capabilities. Figure 3 A hardware schematic diagram supporting 2T4R antenna switching is shown.

[0098] like Figure 3 As shown, the terminal device includes four antennas 331, 332, 333, and 334, and correspondingly, the terminal device includes four links 311, 312, 321, and 322, wherein links 311 and 312 are multiplexed as radio frequency links. When sending SRS, the terminal device can poll different antennas through antenna switches 341 and 342. In an embodiment of the present application, the antenna switch is a transceiver signal switching switch, which can complete transceiver switching under software support control, as well as switching between frequency bands. In some embodiments, the antenna switch may also be referred to as a combiner, a duplex filter, and the like. In an embodiment of the present application, antenna switches 341 and 342 may be double pole double throw switches (DPDT).

[0099] Both NR and LTE can support carrier aggregation technology. For different component carriers, there may be different duplex modes, such as one component carrier in the TDD band and another component carrier in the FDD band. In addition, different component carriers may perform uplink or downlink signal transmission at the same time, for example, one component carrier is performing uplink transmission while another component carrier is performing downlink signal transmission.

[0100] Due to the complexity and cost constraints of implementing radio frequency links, different carriers often use the same set of radio frequency links. For example, the aforementioned 1T4R terminal device multiplexes each antenna through antenna switching.

[0101] One problem is that after the antenna is switched, the terminal device can continue to send SRS through the carrier of the TDD frequency band or continue to send information on the physical uplink shared channel (PUSCH) and the physical uplink control channel (PUCCH), but cannot continue to send uplink information through other carriers (such as FDD carriers). In other words, the SRS antenna switching capability under the carrier of the TDD frequency band is not supported by other carriers. Table 1 shows the antenna scheduling for 1T2R terminal devices in this case.

[0102] Table 1

[0103] Time slot N N+1 N+2 N+3 N+4 N+5 N+6 TDD Band AP0 AP0 AP1 AP1 AP0 AP0 AP0 FDD band AP0 AP0 none none AP0 AP0 AP0

[0104] Among them, AP0 represents antenna port 0, AP1 represents antenna port 1, and N is any time slot. As can be seen from Table 1, for the TDD band, after the antenna port is switched from AP0 to AP1, the terminal device can continue to send data through AP1. For the FDD band, in the time slot "N+2" when the antenna port is switched from AP0 to AP1, and the time slot "N+3" when the antenna port is AP1, the FDD band cannot send uplink data. It can be seen that the antenna selection of the TDD band will affect the transmission of uplink PUSCH / PUCCH / SRS and other channels or signals in the FDD band.

[0105] Another problem is that the SRS antenna switching under the TDD frequency band carrier will cause the RF link to be mismatched for the downlink signal reception of other carriers. Specifically, after the antenna is switched, the terminal device can continue to send SRS through the TDD frequency band carrier or continue to send information on PUSCH, PUCCH, or continue to perform downlink transmission through the TDD frequency band carrier. However, the terminal device cannot continue to receive reference signals through other carriers (such as FDD carriers), or continue to perform downlink transmission on the physical downlink shared channel (PDSCH) and physical downlink control channel (PDCCH) through other carriers. Table 2 shows the antenna scheduling for 1T2R terminal devices in this case.

[0106] Table 2

[0107] Time slot N N+1 N+2 N+3 N+4 N+5 N+6 TDD band uplink AP0 AP0 AP1 AP1 AP1 AP1 AP1 FDD band downlink DL DL none DL DL DL DL

[0108] DL means that downlink transmission is possible. As can be seen from Table 2, for the FDD band, in the time slot "N+2" when the antenna port switches from AP0 to AP1, the FDD band cannot receive downlink data. It can be seen that the antenna selection of the TDD band will also affect the transmission of downlink PDSCH / PDCCH / reference signal and other channels or signals of the FDD band.

[0109] Therefore, when antenna switching occurs on one carrier, how to schedule other affected carriers is an urgent problem to be solved.

[0110] In order to solve the above two problems, parameter 1 and parameter 2 can be defined in the high-level signaling (such as RRC signaling) configuration. Parameter 1 can be understood as the frequency band that is switched together when the transmitting antenna is switched. For example, the specific parameter of parameter 1 can be "txSwitchWithAnotherBand". Parameter 2 can be understood as the frequency band that the transmitting antenna switching affects the downlink reception. For example, the specific parameter of parameter 2 can be "txSwitchImpactToRx".

[0111] Furthermore, the aforementioned parameter 1, parameter 2, "supportedSRS-TxPortSwitc" parameter and "srs-SwitchingTimesListN" parameter may be defined in the capabilities of a terminal device (eg, UE).

[0112] Parameter 1 may be a 32-bit integer number, which is used to indicate the carrier ID (ID) of the carrier that is affected by the uplink transmission when an antenna switch occurs on one carrier. For example, the carrier number corresponding to the currently configured uplink carrier is 18, and the uplink carrier number that is affected by the first antenna switch on the uplink carrier is 3, then parameter 1 may indicate 3. In this way, when the uplink carrier numbered 3 is switched, the carrier numbered 18 may receive a notification. Parameter 1 may indicate 32 different carrier IDs.

[0113] Parameter 2 can be a 32-bit integer number, which is used to indicate the carrier ID of the carrier whose downlink transmission is affected when antenna switching occurs on a carrier. For example, the carrier ID corresponding to the currently configured downlink carrier is 20, and the uplink carrier number that is affected by the first antenna switching on the downlink carrier is 3, then parameter 2 can indicate 3. In this way, when the carrier with uplink carrier ID 3 is switched, the carrier with carrier ID 20 can receive a notification. Parameter 2 can indicate 32 different carrier IDs. For the carrier with carrier ID 20, for the convenience of description, it may also be referred to as carrier 20 below.

[0114] The "supportedSRS-TxPortSwitc" parameter indicates the number of antennas corresponding to the nTmR terminal device. The antennas that can support antenna selection can be determined based on this parameter. For example, 2T4R can be understood as 2 antenna pairs that can support antenna selection.

[0115] The "srs-SwitchingTimesListN" parameter is used to indicate the time protection interval for SRS antenna selection. During this time protection interval, the terminal device does not schedule uplink data transmission on carriers of other frequency bands (corresponding to parameter 1) or does not need to receive downlink data on carriers of other frequency bands (corresponding to parameter 2).

[0116] Figure 44 is a schematic flow chart of a multi-carrier transmission method 400 provided in an embodiment of the present application. The multi-carrier transmission method 400 can schedule other affected carriers when antenna switching occurs on one carrier.

[0117] S410, the terminal device sends a signal to the network device through the first SRS resource in the first time domain unit and the first carrier, and sends a signal to the network device through the second SRS resource in the second time domain unit and the first carrier, wherein the first SRS resource and the second SRS resource respectively include different antenna ports, and the second time domain unit is located after the first time domain unit. For example, the second time domain unit can be a time domain unit that is after the first time domain unit and adjacent to the first time domain unit.

[0118] The first time domain unit may be a superframe, a radio frame, a time slot, a symbol, etc., which is not limited in this application. For example, the first time domain unit may be a first OFDM symbol, which is an OFDM symbol transmitted by the first SRS resource. Correspondingly, the second time domain unit may also be a superframe, a radio frame, a time slot, a symbol, etc., which is not limited in this application. For example, the second time domain unit may be a second OFDM symbol, which is an OFDM symbol transmitted by the second SRS resource.

[0119] For example, for a 1T2R terminal device, there are 2 antennas but only 1 RF link. In this way, in order to obtain the complete channel information corresponding to all antennas, for a 1T2R terminal device, it is necessary to switch between different antennas to send SRS at different times, that is, SRS antenna selection. For example, corresponding to a 1T2R terminal device, when the usage in an SRS resource set is configured as "antennaSwitching", the SRS resource set may include 2 SRS resources, the 2 SRS resources include different antenna ports, and the 2 SRS resources correspond to different OFDM symbols. For example, SRS resource 1 transmits OFDM symbol 1, and SRS resource 2 transmits OFDM symbol 2.

[0120] For example, for a 1T4R terminal device, there are 4 antennas but only 1 RF link. In this way, in order to obtain the complete channel information corresponding to all antennas, for a 1T4R terminal device, it is necessary to switch between different antennas to send SRS at different times, that is, SRS antenna selection. For example, corresponding to a 1T4R terminal device, when the usage in an SRS resource set is configured as "antennaSwitching", the SRS resource set may include 4 SRS resources, the 4 SRS resources include different antenna ports, and the 4 SRS resources correspond to different OFDM symbols. For example, SRS resource 1 transmits OFDM symbol 1, SRS resource 2 transmits OFDM symbol 2, SRS resource 3 transmits OFDM symbol 3, and SRS resource 4 transmits OFDM symbol 4.

[0121] In some embodiments, the first carrier is an uplink carrier in a TDD frequency band.

[0122] The above S410 can also be understood as the terminal device sending a signal to the network device through the first antenna port in the first time domain unit and the first carrier, and sending a signal to the network device through the second antenna port in the second time domain unit and the first carrier, and the first antenna port and the second antenna port are different antenna ports. The above S410 can also be understood as antenna switching, SRS antenna switching, or antenna port switching on the first carrier.

[0123] S420, the terminal device does not perform uplink or downlink transmission on a first time period and a second carrier, wherein the first time period includes the second time domain unit and a second time period, and the second time period is adjacent to the second time domain unit.

[0124] The first time period can be preset, and this application does not limit this. For example, the first time period can be set to 10us, 50us, etc.

[0125] The second time period can be preset, and this application does not limit this. For example, the second time period can be set to 5us, 25us, etc.

[0126] In some embodiments, the second time domain unit may be a superframe, a radio frame, a time slot or a symbol in which the terminal device sends an SRS signal.

[0127] In some embodiments, the second carrier is a carrier of the FDD frequency band, but the present application is not limited thereto, for example, the second carrier may also be other carriers of the non-FDD frequency band.

[0128] In the CA scenario, the first carrier is also referred to as a first component carrier or a first component carrier, and the second carrier is also referred to as a second component carrier or a second component carrier.

[0129] Method 400 can also be understood as that, in the first time period, the network device does not schedule the uplink signal transmission on the second carrier, and the terminal device does not expect to receive the downlink signal transmission on the second carrier in the first time period. The second carrier is the affected carrier, or is called the victim carrier. The second carrier can be a carrier defined by parameter 1 or parameter 2. In other words, in the first time period, on the second carrier, the terminal device does not need to send an uplink signal.

[0130] In some embodiments, before S410, the method 400 further includes: the terminal device receives indication information, the indication information is used to configure the second carrier, and the indication information is also used to indicate the index of the first carrier, and when the antenna switching occurs on the first carrier, the second carrier is affected. For example, the indication information includes "txSwitchWithAnotherBand" or "txSwitchImpactToRx". For example, when the indication information is "txSwitchWithAnotherBand", the terminal device does not need to send an uplink signal on the second carrier. When the indication information is "txSwitchImpactToRx", the terminal device does not expect to receive a downlink signal on the second carrier.

[0131] In some embodiments, the first carrier is a TDD carrier and the second carrier is an FDD carrier, and this carrier form may be referred to as a TDD-FDD combination. For the TDD-FDD combination, some carriers support switching of transmit antennas, such as TDD carriers.

[0132] On the one hand, for each uplink carrier, the terminal device does not want to transmit uplink signals (for example, PUSCH, PUCCH, physical random access channel (PRACH) or SRS signals) through different antenna ports at the same time, and the association between these carriers or carrier pairs is reported or indicated by parameter 1. For example, if carrier 5 is configured in parameter 1 of carrier 23 (for example, "txSwitchWithAnotherBand"), when the terminal device sends an uplink signal on carrier 5 through antenna port 2 included in the second SRS resource (it can be understood that at this moment, the terminal device has antenna switching on carrier 5, that is, the SRS signal was sent through antenna port 1 included in the first SRS resource at the previous moment), at the same moment, the terminal device does not want to send an uplink signal on carrier 23 through antenna port 1.

[0133] Assume that the terminal device sends a signal through antenna port 1 included in the SRS resource on the first symbol (OFDM symbol) on carrier 23 and carrier 5, and in the second symbol (OFDM symbol), carrier 5 undergoes antenna switching and switches to antenna port 2, that is, the signal is sent through antenna port 2 included in the second SRS resource. There is no antenna switching function on carrier 23, or carrier 23 does not support transmitting antenna switching, but the terminal device does not want to transmit the uplink signal on carrier 5 through antenna port 2 included in the switched SRS resource while transmitting the uplink signal of antenna port 1 included in the SRS resource before switching on carrier 23. Therefore, the terminal device does not send a signal on the second symbol and carrier 23 through the SRS resource before switching or the SRS resource after switching. It can be understood that the affected carrier ID corresponding to carrier 23 is reported by parameter 1. The aforementioned "influence" means that when the carrier corresponding to the carrier ID undergoes antenna switching, the terminal device does not send an uplink signal or receive a downlink signal on the carrier configured with parameter 1. In other words, carrier 23 can be a victim carrier, and carrier 5 can be an aggressor carrier. The SRS resource before switching on carrier 5 may be the first SRS resource, and the SRS resource after switching may be the second SRS resource; the SRS resource on carrier 23 is not limited.

[0134] On the other hand, for each uplink carrier, the terminal device does not need to receive a downlink signal (e.g., PDSCH, PDCCH, or SS / PBCH) on the carrier reported by parameter 2 (e.g., "txSwitchImpactToRx") in the time domain unit (e.g., symbol) where antenna switching is performed. For example, carrier 7 is configured in parameter 2 of carrier 25. Assume that the terminal device sends a signal on carrier 7 and the first symbol through antenna port 1 included in the SRS resource before switching, and receives a signal on carrier 25 and the first symbol. In the second symbol, antenna switching occurs on carrier 7 and switches to antenna port 2, that is, the signal is sent through antenna port 2 included in the SRS resource after switching. The terminal device does not need to receive a downlink signal on the second symbol and carrier 25. It can be understood that antenna switching occurs on carrier 7, and this information can be reported to carrier 25 according to parameter 2. In other words, carrier 7 can be a victim carrier, and carrier 25 can be an aggressor carrier.

[0135] It is understandable that when a carrier undergoes antenna switching, if other affected carriers are only constrained not to send uplink signals or receive downlink signals in the time domain unit where the antenna switching occurs, data transmission may fail. For example, when the transmission delay fluctuates, the time domain units for transmission of the terminal device and the network device may not be aligned, resulting in some data being sent or received when it should not be sent or received.

[0136] Based on the above scheme, when antenna switching occurs on a certain carrier, other affected carriers can be constrained not to send uplink signals and receive downlink signals. Since the first time period includes both the time domain unit where the antenna switching occurs and the second time period adjacent to the time domain unit, the multi-carrier transmission method provided in the embodiment of the present application can schedule other affected carriers not to perform uplink transmission and downlink transmission for a time longer than the antenna switching when the antenna is switched, thereby effectively avoiding transmission failures.

[0137] In some embodiments, the second time period is before the second time domain unit and / or after the second time domain unit.

[0138] It should be noted that the second time period may be one or more. For example, the second time period may be 30 microseconds before the second time domain unit. For another example, the second time period may be 15 microseconds after the second time domain unit. For another example, the second time period may be 10 microseconds before the second time domain unit and 55 microseconds after the second time domain unit.

[0139] In some embodiments, the method 400 further includes: the terminal device reporting capability information to the network device, the capability information including a value of the first time period.

[0140] The terminal device can report the first time period to the network device, and the first time period includes both the time domain unit where the antenna switch is located and the time added relative to the time domain unit where the antenna switch is located. The multi-carrier transmission method provided in the embodiment of the present application can avoid the network device from having transmission errors due to the loss of the time domain unit where the antenna switch is located, thereby improving security.

[0141] In some embodiments, a value of the first time period has a first correlation relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0142] Further, the first association relationship may include: the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases. For example, referring to Table 3, Table 4 and Table 5, the first time period may be defined by a time domain unit.

[0143] In some embodiments, the method 400 further includes: the terminal device reporting capability information to the network device, the capability information including a value of the second time period.

[0144] The terminal device can only report the second time period to the network device. The second time period is the time added relative to the time domain unit where the antenna switch is located. Since the network device already knows the time domain unit where the antenna switch is located, only reporting the second time period can reduce the reporting overhead of the terminal device.

[0145] In some embodiments, a value of the second time period has a second correlation relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0146] Further, the second association relationship includes: the second time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases. For example, see Table 3, Table 4 and Table 5.

[0147] Table 3 Symbols of the first time period or the second time period

[0148]

[0149] Table 3 shows the symbols of the first time period or the second time period. For example, when the subcarrier spacing of the second carrier is 15 kHz and the subcarrier spacing of the first carrier is 15 kHz, the first time period or the second time period is 3 symbols. For another example, when the subcarrier spacing of the second carrier is 30 kHz and the subcarrier spacing of the first carrier is 15 kHz, the first time period or the second time period is 4 symbols.

[0150] It should be noted that the present application does not limit the first association relationship to only that the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases. For example, referring to Table 4, the first association relationship may also remain unchanged as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases. For another example, the first association relationship may also decrease as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0151] It should be noted that the present application does not limit the second association relationship to only that the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases. For example, the second association relationship may also remain unchanged as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases. For another example, the second association relationship may also decrease as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0152] Table 4 Time slots of the first time period or the second time period

[0153]

[0154] Table 4 shows the time slots of the first time period or the second time period. For example, when the subcarrier spacing of the second carrier is 15 kHz and the subcarrier spacing of the first carrier is 15 kHz, the first time period or the second time period is 2 time slots. For another example, when the subcarrier spacing of the second carrier is 30 kHz and the subcarrier spacing of the first carrier is 15 kHz, the first time period or the second time period is 2 time slots.

[0155] Table 5 Time slots of the first time period or the second time period

[0156]

[0157]

[0158] Table 5 shows the time slots of the first time period or the second time period. For example, when the subcarrier spacing of the second carrier is 15 kHz and the subcarrier spacing of the first carrier is 15 kHz, the first time period or the second time period is 2 time slots. For another example, when the subcarrier spacing of the second carrier is 120 kHz and the subcarrier spacing of the first carrier is 15 kHz, the first time period or the second time period is 5 time slots.

[0159] In some embodiments, the second carrier is an uplink carrier, wherein the method 400 further includes: the terminal device does not expect to send an uplink signal to the network device.

[0160] For example, in this case, the first time period includes any one of 30us, 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols, or the second time period includes any one of 30us, 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

[0161] In some other embodiments, the second carrier is a downlink carrier, wherein the method 400 further includes: the terminal device does not expect to receive a downlink signal in the first time period.

[0162] In other words, the terminal device does not expect to receive a downlink reference signal or a data signal in the first time period. For example, in this case, the first time period includes any one of 30us, 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols, or the second time period includes any one of 30us, 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

[0163] Figure 5 1 is a schematic flow chart of another multi-carrier transmission method 500 provided in an embodiment of the present application. The multi-carrier transmission method 500 can schedule other affected carriers when antenna switching occurs on one carrier.

[0164] S510, the terminal device sends a signal to the network device through the first SRS resource in the first time domain unit and the first carrier, and sends a signal to the network device through the second SRS resource in the second time domain unit and the first carrier, wherein the first SRS resource and the second SRS resource respectively include different antenna ports, and the second time domain unit is located after the first time domain unit.

[0165] The above S510 is similar to the above S410. The implementation of S510 can refer to the implementation related to S410, which will not be repeated here.

[0166] S520, the terminal device sends a signal to the network device through a third SRS resource on the second time domain unit and the second carrier, wherein there is an association relationship between an index of the third SRS resource on the second carrier and an index of the second SRS resource on the first carrier.

[0167] For example, the terminal device can send an uplink channel such as PUSCH, PUCCH or PRACH to the network device through the third SRS resource on the second time domain unit and the second carrier. However, the present application is not limited to this. For example, the terminal device can also send an SRS signal to the network device through the third SRS resource on the second time domain unit and the second carrier.

[0168] Method 500 can be understood as constraining other uplink carriers to use associated transmission antennas when SRS antenna switching occurs on a certain carrier. Method 500 can also be understood as when antenna switching occurs for SRS on at least one carrier, for cross-carrier uplink transmission, all carriers configured with parameter 1 (e.g., "txSwitchWithAnotherBand") use associated antennas to transmit uplink signals, for example, uplink signals can be transmitted via PUCCH or PUSCH, or SRS signals can be transmitted, etc.

[0169] Method 500 can also be understood as the terminal device switching at the same time on the carrier combination of the shared antenna, and the antennas used to send uplink data between different carriers on the same symbol remain consistent. For example, carrier 4 is configured in parameter 1 of carrier 23 (for example, "txSwitchWithAnotherBand"). Assume that the terminal device sends a signal through antenna port 1 contained in the SRS resource before switching on the first time domain unit on carriers 23 and 4. In the second time domain unit, carrier 4 undergoes antenna switching and switches to antenna port 2, that is, the signal is sent through antenna port 2 contained in the SRS resource after switching. Carrier 23 does not have the function of antenna switching, or carrier 23 does not support transmitting antenna switching, but carrier 23 and carrier 4 are a carrier combination, and the terminal device can switch at the same time on the shared antenna (that is, antenna port 1 and antenna port 2), that is, through the association relationship, the terminal device sends information on carrier 22 and the second time domain unit through antenna port 2 contained in the SRS resource after switching. When the above-mentioned time domain unit is used as a symbol, it is realized that "the antennas used to send uplink data between different carriers on the same symbol remain consistent". In other words, carrier 4 may be a victim carrier, and carrier 23 may be an aggressor carrier. The SRS resource before switching on carrier 4 may be a first SRS resource, and the SRS resource after switching may be a second SRS resource; the SRS resource on carrier 23 is not limited.

[0170] Based on the above solution, when antenna switching occurs on a carrier, other affected carriers can be scheduled to use the switched antenna ports for uplink transmission, avoiding the situation where some carriers cannot work during antenna switching, thereby improving transmission efficiency.

[0171] For example, the embodiment of the present application may define a binding relationship between an SRS AP under an SRS antenna selection configuration and SRS resources on other carriers, so as to implicitly ensure that the port through which the SRS is actually sent corresponds to the same antenna port.

[0172] The SRS resource set configured as antenna switching for "usage" on the first carrier includes multiple SRS resources, and each SRS resource corresponds to the SRS resource of the second carrier (here, the SRS resource set corresponding to the SRS resource of the second carrier may not be a resource set configured as antenna switching for "usage", for example, it may be configured as any one of {beamManagement, codebook, nonCodebook, antennaSwitching}). Here, "one-to-one correspondence" may refer to the same resource index, and may also refer to the same antenna ports (which may be physical antenna ports) included in each group of corresponding SRS resources. The same antenna ports included in the SRS resources may refer to the same number of antenna ports included in the second SRS resource on the first carrier and the third SRS resource on the second carrier, that is, through the association relationship between the SRS resources on the first and second carriers, it is ensured that the uplink signals transmitted at the same time on multiple carriers affected by txSwitchWithAnotherBand use the same antenna port or physical antenna. For example, a 2T4R terminal has four antenna ports, and the antenna switching SRS resource set on the first carrier includes two antenna switching SRS resources, one of which includes two antenna ports, and the other includes the other two antenna ports. The second carrier also has two SRS resources correspondingly, one of which includes the first two ports, and the other includes the last two antenna ports. Among them, the second carrier can be an FDD carrier or another TDD carrier different from the first carrier. For another example, for a 1T4R terminal, the first antenna port on the first carrier is bound to the first SRS resource of the second carrier, the second antenna port on the first carrier is bound to the second SRS resource of the second carrier, the third antenna port on the first carrier is bound to the third SRS resource of the second carrier, and the fourth antenna port on the first carrier is bound to the fourth SRS resource of the second carrier. In this way, when the antenna switching occurs on the first carrier and the antenna port based on the switched SRS resource is used for uplink transmission, the terminal device can determine that only the SRS resource is allowed to communicate with the network device through the SRS resource corresponding to the antenna port on the second carrier, thereby realizing that the second carrier also communicates on the antenna port.

[0173] For another example, for a 1T2R terminal, the first SRS resource on the first carrier includes the first antenna port, and the first SRS resource corresponds to the SRS resource on the second carrier. The second SRS resource on the first carrier includes the second antenna port, and the second SRS resource corresponds to the SRS resource on the second carrier.

[0174] In some embodiments, if a terminal device (e.g., UE) is configured with multiple serving cells, and for a group of cells belonging to a frequency band that is signaled to be switched together in "txSwitchWithAnotherBand", the terminal device does not want to transmit SRS and SRS / PUSCH / PUCCH / PRACH simultaneously on different antenna ports.

[0175] The above serving cells are equivalent to carriers. In other words, multiple serving cells can be understood as multiple carriers, such as a first carrier and a second carrier.

[0176] In some embodiments, the association relationship includes that an index of the third SRS resource on the second carrier is the same as an index of the second SRS resource on the first carrier.

[0177] However, the present application does not limit the indexes of the third SRS resource and the second SRS resource to be the same. For example, the index of the third SRS resource on the second carrier may be different from the index of the second SRS resource on the first carrier, but the port corresponding to the index of the third SRS resource on the second carrier is the same as the port corresponding to the index of the second SRS resource on the first carrier.

[0178] In other words, the association relationship may include a situation where the indexes are the same, or may include a situation where the indexes are different but the ports corresponding to the indexes are the same. This application does not limit the association relationship.

[0179] In some embodiments, the method 500 also includes: the terminal device sends a signal to the network device through a fourth SRS resource on the first time domain unit and the second carrier, wherein there is an association between the index of the fourth SRS resource on the second carrier and the index of the first SRS resource on the first carrier.

[0180] Further, in some embodiments, the index of the fourth SRS resource on the second carrier is the same as the index of the first SRS resource on the first carrier.

[0181] In some embodiments, the method 500 also includes: the terminal device does not perform downlink transmission in a first time period and on the second carrier, wherein the first time period includes the second time domain unit and a second time period, and the second time period is adjacent to the second time domain unit.

[0182] In some embodiments, before the terminal device sends a signal to the network device through the second SRS resource on the second time domain unit and the second carrier, the method 500 also includes: the terminal device receives configuration information from the network device, and the configuration information includes an association relationship between an index of the second SRS resource on the second carrier and an index of the second SRS resource on the first carrier.

[0183] The embodiment of method 500 may be combined with some embodiments of method 400. Some embodiments of method 500 are described below by way of example, and the parts not described may refer to the embodiment of method 400.

[0184] In some embodiments, the second time period is before the second time domain unit and / or after the second time domain unit.

[0185] In some embodiments, the method 500 further includes: the terminal device reporting capability information to the network device, the capability information including a value of the first time period.

[0186] In some embodiments, a value of the first time period has a first correlation relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0187] Further, the first association relationship may include: the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0188] In some embodiments, the method 500 further includes: the terminal device reporting capability information to the network device, the capability information including a value of the second time period.

[0189] In some embodiments, a value of the second time period has a second correlation relationship with a subcarrier spacing of the first carrier and / or the second carrier.

[0190] Further, the second association relationship includes: the second time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

[0191] In some embodiments, the second carrier is a downlink carrier, wherein the method 500 further includes: the terminal device does not expect to receive a downlink signal in the first time period.

[0192] In other words, the terminal device does not expect to receive a downlink reference signal or a data signal in the first time period.

[0193] For example, the first time period includes any one of 30us, 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols, or the second time period includes any one of 30us, 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

[0194] In some embodiments, when the network device schedules the terminal device to perform uplink transmission, the antenna ports on different carriers are kept consistent.

[0195] The following is an introduction to the device embodiment corresponding to the method embodiment of the present application. The following is only a brief introduction to the device, and the specific implementation steps and details of the scheme can refer to the method embodiment above.

[0196] In order to implement the functions in the method provided in this application, the terminal device and the network device may include a hardware structure and / or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0197] Figure 6 6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 includes a processor 610 and a communication interface 620, and the processor 610 and the communication interface 620 may be interconnected via a bus 630. The communication device 600 may be a terminal device or a network device.

[0198] Optionally, the communication device 600 may further include a memory 640. The memory 640 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 640 is used for related instructions and data.

[0199] The processor 610 may be one or more central processing units (CPUs). In the case where the processor 610 is a CPU, the CPU may be a single-core CPU or a multi-core CPU. The processor 610 may be a signal processor, a chip, or other integrated circuit that can implement the method of the present application, or a portion of the circuit used for processing functions in the aforementioned processor, chip, or integrated circuit. In addition, the communication interface 620 may also be an input / output interface, which is used for input or output of signals or data, or may be an input / output circuit.

[0200] When the communication device 600 is a terminal device, exemplarily, the processor 610 is used to perform the following operations: sending a signal to a network device via a first SRS resource in a first time domain unit and a first carrier; not performing uplink or downlink transmission in a first time period and a second carrier, etc.

[0201] When the communication device 600 is a network device, exemplarily, the processor 610 is used to perform the following operations: receive a signal sent from a terminal device via a first SRS resource on a first time domain unit and a first carrier; do not schedule the terminal device to send an uplink transmission on a first time period and a second carrier, etc.

[0202] The above contents are only exemplary descriptions. When the communication device 600 is a terminal device or a network device, it will be responsible for executing the methods or steps related to the terminal device or the network device in the above method embodiments.

[0203] It is understandable that when the communication device 600 is a terminal device or a network device, the communication interface 620 may also be referred to as a transceiver. The above description is only an exemplary description. For specific content, please refer to the content shown in the above method embodiment. Figure 6 The implementation of each operation in can also refer to Figure 4 and Figure 5 The corresponding description of the method embodiment shown.

[0204] Figure 7 700 is a schematic block diagram of a communication device 700 of an embodiment of the present application. The communication device 700 may be a terminal device or a network device, or may be a chip or module in the terminal device or the network device, for implementing the method involved in the above embodiment. The communication device 700 includes a transceiver unit 710. The transceiver unit 710 is exemplarily introduced below.

[0205] The transceiver unit 710 may include a transmitting unit and a receiving unit. The transmitting unit is used to perform a transmitting action of the communication device, and the receiving unit is used to perform a receiving action of the communication device. For ease of description, the embodiment of the present application combines the transmitting unit and the receiving unit into one transceiver unit. A unified description is given here, and no further description is given later.

[0206] When the communication device 700 is a terminal device, illustratively, the transceiver unit 710 is used to send an SRS signal to a network device. The transceiver unit 710 is also used to receive a downlink channel or signal from the network device.

[0207] Optionally, the communication device 700 may further include a processing unit 720, which is used to execute the content of steps involving processing, coordination, etc. of the terminal device.

[0208] When the communication device 700 is a network device, illustratively, the transceiver unit 710 is used to send a downlink channel or signal to a terminal device.

[0209] Optionally, the communication device 700 may further include a processing unit 720, which is used to execute the content of steps involving processing, coordination, etc. of the network device.

[0210] The above contents are only exemplary descriptions. When the communication device 700 is a terminal device or a network device, it will be responsible for executing the methods or steps related to the terminal device or the network device in the above method embodiments.

[0211] Optionally, the communication device 700 further includes a storage unit 730, where the storage unit 730 is used to store a program or code for executing the aforementioned method.

[0212] Figure 6 and Figure 7 The device embodiment shown is used to implement Figure 4 and Figure 5 The content described. Figure 6 and Figure 7 The specific execution steps and methods of the device shown can refer to the contents described in the aforementioned method embodiment.

[0213] The present application also provides a chip, including a processor, for calling and executing instructions stored in a memory from the memory, so that a communication device equipped with the chip executes the methods in the above examples.

[0214] The present application also provides another chip, including: an input interface, an output interface, and a processor, wherein the input interface, the output interface, and the processor are connected via an internal connection path, and the processor is used to execute the code in the memory, and when the code is executed, the processor is used to execute the method in each of the above examples. Optionally, the chip also includes a memory, and the memory is used to store computer programs or codes.

[0215] The present application also provides a processor, which is coupled to a memory and is used to execute the methods and functions involving a network device or a terminal device in any of the above-mentioned embodiments.

[0216] In another embodiment of the present application, a computer program product including instructions is provided. When the computer program product is run on a computer, the method of the above embodiment is implemented.

[0217] The present application also provides a computer program. When the computer program is executed in a computer, the method of the above embodiment is implemented.

[0218] In another embodiment of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a computer, the method described in the above embodiment is implemented.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present 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 multi-carrier transmission method, characterized in that: include: The terminal device sends a signal to the network device through a first SRS resource in a first time domain unit and a first carrier, and sends a signal to the network device through a second SRS resource in a second time domain unit and the first carrier, wherein the first SRS resource and the second SRS resource respectively include different antenna ports, and the second time domain unit is located after the first time domain unit; The terminal device does not perform uplink or downlink transmission in a first time period and a second carrier, wherein the first time period includes the second time domain unit and a second time period, and the second time period is adjacent to the second time domain unit.

2. The method according to claim 1, characterized in that The second time period is before the second time domain unit and / or after the second time domain unit.

3. The method according to claim 1 or 2, characterized in that: Also includes: The terminal device reports capability information to the network device, where the capability information includes a value of the first time period.

4. The method according to claim 3, characterized in that: There is a first association relationship between a value of the first time period and a subcarrier spacing of the first carrier and / or the second carrier.

5. The method according to claim 4, characterized in that The first association relationship includes: the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

6. The method according to claim 1 or 2, characterized in that: Also includes: The terminal device reports capability information to the network device, where the capability information includes a value of the second time period.

7. The method according to claim 6, characterized in that A value of the second time period has a second association relationship with a subcarrier spacing of the first carrier and / or the second carrier.

8. The method according to claim 7, characterized in that The second association relationship includes: the second time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

9. The method according to any one of claims 1 to 8, characterized in that The second carrier is an uplink carrier, wherein the method further includes: The terminal device does not expect to send an uplink signal to the network device.

10. The method according to claim 9, characterized in that The first time period includes any one of 30 microseconds (us), 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols; or the second time period includes any one of 30us, 100us, 200us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

11. The method according to any one of claims 1 to 8, characterized in that The second carrier is a downlink carrier, wherein the method further includes: The terminal device does not expect to receive a downlink signal during the first time period.

12. The method according to claim 11, characterized in that The first time period includes any one of 30us, 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols, or the second time period includes any one of 30us, 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

13. The method according to any one of claims 1 to 12, characterized in that The first carrier is an uplink carrier in the TDD frequency band.

14. The method according to any one of claims 1 to 13, characterized in that The second carrier is a carrier in the FDD frequency band.

15. The method according to any one of claims 1 to 14, characterized in that The terminal device does not perform uplink or downlink transmission in the first time period and the second carrier, including: The terminal device does not perform uplink or downlink transmission through the second SRS resource in the first time period and the second carrier.

16. A multi-carrier transmission method, characterized in that: include: The terminal device sends a signal to the network device through a first SRS resource in a first time domain unit and a first carrier, and sends a signal to the network device through a second SRS resource in a second time domain unit and the first carrier, wherein the first SRS resource and the second SRS resource respectively include different antenna ports, and the second time domain unit is located after the first time domain unit; The terminal device sends a signal to the network device through a third SRS resource on the second time domain unit and the second carrier, wherein an index of the third SRS resource on the second carrier is associated with an index of the second SRS resource on the first carrier.

17. The method according to claim 16, characterized in that The association relationship includes that an index of the third SRS resource on the second carrier is the same as an index of the second SRS resource on the first carrier.

18. The method according to claim 16 or 17, characterized in that Before the terminal device sends a signal to the network device through the second SRS resource in the second time domain unit and the second carrier, the method further includes: The terminal device receives configuration information from the network device, where the configuration information includes an association relationship between an index of a third SRS resource on the second carrier and an index of a second SRS resource on the first carrier.

19. The method according to any one of claims 16 to 18, characterized in that Also includes: The terminal device sends a signal to the network device through a fourth SRS resource on the first time domain unit and the second carrier, wherein the association relationship exists between an index of the fourth SRS resource on the second carrier and an index of the first SRS resource on the first carrier.

20. The method according to claim 19, characterized in that An index of the fourth SRS resource on the second carrier is the same as an index of the first SRS resource on the first carrier.

21. The method according to any one of claims 16 to 20, characterized in that Also includes: The terminal device does not perform downlink transmission in a first time period and on the second carrier, wherein the first time period includes the second time domain unit and a second time period, and the second time period is adjacent to the second time domain unit.

22. The method according to claim 21, characterized in that Also includes: The terminal device reports capability information to the network device, where the capability information includes a value of the first time period.

23. The method according to claim 22, characterized in that There is a first association relationship between a value of the first time period and a subcarrier spacing of the first carrier and / or the second carrier.

24. The method according to claim 23, characterized in that The first association relationship includes: the first time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

25. The method according to claim 21, characterized in that Also includes: The terminal device reports capability information to the network device, where the capability information includes a value of the second time period.

26. The method according to claim 25, characterized in that A value of the second time period has a second association relationship with a subcarrier spacing of the first carrier and / or the second carrier.

27. The method according to claim 26, characterized in that The second association relationship includes: the second time period increases as the subcarrier spacing of the first subcarrier and / or the second subcarrier increases.

28. The method according to any one of claims 21 to 27, characterized in that The first time period includes any one of 30 microseconds (us), 100us, 200us, 300us, 500us, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols; or the second time period includes any one of 30us, 100us, 200us, 300us, 500u, 900us, 2 symbols, 3 symbols, 4 symbols, 8 symbols or 14 symbols.

29. The method according to any one of claims 21 to 28, characterized in that The terminal device does not perform downlink transmission in the first time period and the second carrier, including: The terminal device does not perform downlink transmission through the second SRS resource in the first time period and the second carrier.

30. The method according to any one of claims 16 to 29, characterized in that The first carrier is an uplink carrier in the TDD frequency band.

31. The method according to any one of claims 16 to 30, characterized in that The second carrier is a carrier in the FDD frequency band.

32. A communication device, characterized in that: comprising a processor configured to, by executing a computer program or instructions, or, by means of a logic circuit, The communication device is caused to execute the method according to any one of claims 1 to 15, or The communication device is caused to execute the method according to any one of claims 16 to 31.

33. The device according to claim 32, characterized in that The communication device further comprises a memory for storing the computer program or instructions.

34. The device according to claim 32 or 33, characterized in that The communication device further comprises a communication interface, and the communication interface is used for inputting and / or outputting signals.

35. A communication device, characterized in that: comprising a processing circuit and an input / output interface, wherein the input / output interface is used to input and / or output signals, The processing circuit is used to perform the method according to any one of claims 1 to 15, or The processing circuit is configured to perform the method of any one of claims 16 to 31.

36. A computer-readable storage medium, characterized in that: The computer readable storage medium stores a computer program or instruction. When the computer program or instruction is executed on a computer, so that the method of any one of claims 1 to 15 is performed, or, The method according to any one of claims 16 to 31 is performed.

37. A computer program product, characterized in that Contains instructions that, when executed on a computer, so that the method of any one of claims 1 to 15 is performed, or, The method according to any one of claims 16 to 31 is performed.

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