CN116830738A

CN116830738A - Signal transmission method, device, equipment and storage medium

Info

Publication number: CN116830738A
Application number: CN202380008995.3A
Authority: CN
Inventors: 周锐
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-09-29

Abstract

The embodiment of the disclosure discloses a signal sending method, a device, equipment and a storage medium, which can be applied to a communication system, wherein the method comprises the following steps: determining a time period required by the terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second TRP; determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting a first uplink signal, and the second time unit is a time unit occupied by transmitting a second uplink signal; and transmitting the first uplink signal and/or the second uplink signal according to the required duration and the transmission time difference. By implementing the method disclosed by the invention, the sending accuracy of the uplink signal of the terminal can be effectively improved.

Description

Signal transmission method, device, equipment and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a signal sending method, apparatus, device, and storage medium.

Background

In some communication protocols of the third generation partnership project (3rd Generation Partnership Project,3GPP), multiple transmission reception point (Multi Transmission and Receiving Point, mTRP) transmissions are introduced, as well as two control modes of single downlink control information (Single Downlink Control Information, S-DCI) and multiple DCI (Multi-DCI, M-DCI).

Disclosure of Invention

The embodiment of the disclosure provides a signal sending method, a device, equipment, a chip system, a storage medium, a computer program and a computer program product, which can be applied to the technical field of communication and can effectively improve the sending accuracy of an uplink signal of a terminal.

In a first aspect, an embodiment of the present disclosure provides a signal transmission method, which is performed by a terminal, the method including: determining a time period required by the terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second TRP; determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting a first uplink signal, and the second time unit is a time unit occupied by transmitting a second uplink signal; and transmitting the first uplink signal and/or the second uplink signal according to the required duration and the transmission time difference.

In a second aspect, embodiments of the present disclosure provide a communications device having a function of implementing part or all of the functions of the terminal in the method of the first aspect, for example, the function of the communications device may be provided with a function in part or all of the embodiments of the present disclosure, or may be provided with a function of implementing any of the embodiments of the present disclosure separately. The functions may be realized by hardware, or may be realized by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

Optionally, in an embodiment of the disclosure, the structure of the communication device may include a transceiver module and a processing module, where the processing module is configured to support the communication device to perform the corresponding functions in the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of the communication device.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In a third aspect, an embodiment of the present disclosure provides a communication apparatus including a processor that, when invoking a computer program in memory, performs the signaling method of the first aspect described above.

In a fourth aspect, embodiments of the present disclosure provide a communication apparatus comprising a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the signaling method of the first aspect described above.

In a fifth aspect, embodiments of the present disclosure provide a communication apparatus, the apparatus comprising a processor and an interface circuit for receiving code instructions and transmitting to the processor, the processor for executing the code instructions to cause the apparatus to perform the signaling method of the first aspect described above.

In a sixth aspect, embodiments of the present disclosure provide a communication system comprising the communication device of the second aspect, or the system comprising the communication device of the third aspect, or the system comprising the communication device of the fourth aspect, or the system comprising the communication device of the fifth aspect.

In a seventh aspect, an embodiment of the present disclosure provides a computer readable storage medium storing instructions for use by the terminal, which when executed, cause the terminal to perform the signaling method of the first aspect.

In an eighth aspect, the present disclosure also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the signalling method of the first aspect described above.

In a ninth aspect, the present disclosure provides a chip system comprising at least one processor and an interface for supporting a terminal to implement the functionality referred to in the first aspect, e.g. to determine or process at least one of data and information referred to in the above method.

In one possible design, the chip system further includes a memory for holding computer programs and data necessary for the terminal. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a tenth aspect, the present disclosure provides a computer program which, when run on a computer, causes the computer to perform the signaling method of the first aspect described above.

In summary, the signal sending method, apparatus, device, chip system, storage medium, computer program and computer program product provided in the embodiments of the present disclosure may implement the following technical effects:

the terminal may determine a time period required for switching from transmitting the first uplink signal to transmitting the second uplink signal to the second TRP by transmitting the first uplink signal to the first TRP, determine a transmission time difference between the first time unit and the second time unit, and transmit the first uplink signal and/or the second uplink signal according to the required time period and the transmission time difference, so that, due to the capability of uplink simultaneous transmission of the terminal and the capability of transmitting link switching of the terminal, different strategies are adopted to ensure that the transmission of the uplink signal is correctly performed in consideration of different situations, thereby effectively improving the accuracy of the transmission of the uplink signal of the terminal.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background of the present disclosure, the following description will explain the drawings that are required to be used in the embodiments or the background of the present disclosure.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the disclosure;

fig. 2 is a schematic flow chart of a signaling method according to an embodiment of the disclosure;

fig. 3 is a schematic flow chart of a signaling method according to an embodiment of the disclosure;

FIG. 4a is a diagram illustrating a time axis of uplink and downlink signals between a terminal and TRP according to one embodiment of the disclosure;

fig. 4b is a schematic diagram of an uplink and downlink signal time axis between a terminal and a TRP according to another embodiment of the present disclosure;

fig. 5a is a flowchart of another signaling method according to an embodiment of the present disclosure;

fig. 5b is a flowchart illustrating another signaling method according to an embodiment of the present disclosure;

fig. 5c is a flowchart illustrating another signaling method according to an embodiment of the present disclosure;

fig. 6a is a flow chart of yet another signaling method provided by an embodiment of the present disclosure;

fig. 6b is a flowchart of yet another signaling method according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the disclosure;

Fig. 8 is a schematic structural diagram of another communication device provided in an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a chip of an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The words "if" and "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.

In the related art, a Timing Advance (TA) concept is introduced, that is, each terminal corresponds to one base station, and a specific TA is needed, so that different terminals can perform uplink transmission by adopting different TAs according to the distance between the terminals and the base station, and the time for uplink signals sent by different terminals to reach the base station side is basically consistent. If TA for base station 1 is TA1 and TA for base station 2 is TA2, there is a time difference Δt=ta1-TA 2 for the TA of the two transmit chains of the terminal. Due to the existence of Δt, there is a case of overlapping in time between the two transmission links. And for terminals that do not support simultaneous transmission in multiple directions, a switch may be made from one transmit chain to another.

In the related art, if there is an overlapping portion between a time unit on one transmission link and a time unit on another transmission link, the processing is performed in such a manner that the overlapping portion in the latter time unit is directly abandoned. This approach is based on the same reference time point for both transmit chains and does not take into account the additional handoff duration. In the case of 2TA, the reference time points of the two TAs are not the same, and the specific scheduling time of the opposite party cannot be known between the two TRPs, and if a transmission mode of directly discarding the overlapping portion in the latter time unit is adopted, the accuracy of transmitting the uplink signal of the terminal will be affected.

In order to better understand a signaling method disclosed in an embodiment of the present disclosure, a description is first given below of a communication system to which the embodiment of the present disclosure is applicable.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the disclosure. The communication system may include, but is not limited to, two access network devices and a terminal, and the number and form of the devices shown in fig. 1 are only for example and not meant to limit the embodiments of the present disclosure, and in practical applications, two or more access network devices and two or more terminals may be included. The communication system shown in fig. 1 is exemplified as comprising two access network devices 101 and one terminal 102.

It should be noted that the technical solution of the embodiment of the present disclosure may be applied to various communication systems. For example: a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation,5G) mobile communication system, a 5G New Radio (NR) system, or other future new mobile communication systems, etc.

The access network device 101 in the embodiments of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the access network device 101 may be an evolved NodeB (eNB), a transmission and reception point (transmission reception point, TRP), a next generation NodeB (gNB) in an NR system, a private network system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (wireless fidelity, wiFi) system, or the like. The specific technology and specific device configuration employed by the access network device in the embodiments of the present disclosure are not limited.

The access network device provided by the embodiment of the disclosure may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), the protocol layers of the access network device, such as a base station, may be detached by adopting a CU-DU structure, functions of part of the protocol layers are placed in the CU for centralized control, and functions of part or all of the protocol layers are distributed in the DU, so that the CU centrally controls the DU.

The terminal 102 in the embodiments of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. A terminal may also be referred to as a terminal device, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. The terminal may be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal, an augmented reality (augmented reality, AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), etc.

The embodiment of the disclosure does not limit the specific technology and the specific equipment form adopted by the terminal.

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are equally applicable to similar technical problems.

It should be noted that, the signaling method provided in any one of the embodiments of the present disclosure may be performed alone or in combination with possible implementation methods in other embodiments, and may also be performed in combination with any one of the technical solutions of the related art.

The embodiments of the present disclosure may be applied in a two TRP scenario, where TRP is an alternative example of an access network device, without limitation.

The signaling method and apparatus provided by the present disclosure are described in detail below with reference to the accompanying drawings. Fig. 2 is a flowchart of a signaling method provided in an embodiment of the disclosure, where the method is performed by a terminal. The signal transmission method in the present embodiment may be applied to a terminal, and is not limited thereto.

As shown in fig. 2, the method may include, but is not limited to, the steps of:

s201: a time period required for a terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second transmission and reception point TRP is determined.

In some embodiments, a terminal may transmit an uplink signal to one TRP based on one transmit link, which may be referred to as a first TRP, the uplink signal transmitted to the first TRP may be referred to as a first uplink signal, and another TRP may be referred to as a second TRP, the uplink signal transmitted to the second TRP may be referred to as a second uplink signal, without limitation.

In some embodiments, the terminal may first send the first uplink signal to the first transmission receiving point TRP, and then switch to send the second uplink signal to the second TRP, which is not limited.

In some embodiments, the switching may also be referred to as a link switching, for example, from a transmission link transmitting the first uplink signal to the first transmission receiving point TRP to a transmission link transmitting the second uplink signal to the second transmission receiving point TRP, which is not limited.

In some embodiments, a time period required for switching from transmitting the first uplink signal to transmitting the second uplink signal to the second TRP by transmitting the first uplink signal to the first transmission reception point TRP may be determined, and the required time period may be used as a signal transmission reference without limitation.

In some embodiments, the required duration may be determined by the handover capability of the terminal, which is not limited.

In some embodiments, the desired time period may be expressed as Ts, without limitation.

In some embodiments, the first transmission receiving point TRP may be denoted as TRP1, and the second TRP may be denoted as TRP2, without limitation.

S202: and determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting the first uplink signal, and the second time unit is a time unit occupied by transmitting the second uplink signal.

The first time unit refers to a time unit occupied by transmitting the first uplink signal, and the second time unit refers to a time unit occupied by transmitting the second uplink signal, which is not limited.

In some embodiments, the first time unit may be a slot (slot), or may be any other possible form of time unit, which is not limited.

In some embodiments, the second time unit may be a slot (slot), or may be any other possible form of time unit, which is not limited.

In some embodiments, the first time unit may be represented as slotn, where n is a positive integer greater than 0, which is not limiting.

In some embodiments, the second time unit may be represented as slotn+1, where n is a positive integer greater than 0, without limitation.

The transmission time difference refers to a time difference between the first time unit and the second time unit, which is not limited.

In some embodiments, the transmission time difference may be represented by Δt, which is not limited.

In some embodiments, the first time unit and the second time unit may be subjected to mathematical calculation to obtain a transmission time difference between the first time unit and the second time unit, which is not limited.

In other embodiments, the transmission time difference between the first time unit and the second time unit may also be determined by referring to the receiving time of the first TRP downlink signal and the receiving time of the second TRP downlink signal, which is not limited.

In other embodiments, determining the transmission time difference between the first time unit and the second time unit may be implemented in any other possible manner, which is not limited.

S203: and transmitting the first uplink signal and/or the second uplink signal according to the required duration and the transmission time difference.

In some embodiments, after determining the duration required for the terminal to switch from transmitting the first uplink signal to transmitting the second uplink signal to the second TRP by transmitting the first uplink signal to the first TRP, and determining the transmission time difference between the first time unit and the second time unit, the first uplink signal and/or the second uplink signal may be transmitted according to the required duration and the transmission time difference, which is not limited.

In some embodiments, a preferred transmission policy may be determined according to the required duration and the transmission time difference, and the first uplink signal and/or the second uplink signal may be transmitted based on the preferred transmission policy, which is not limited.

In some embodiments, the first uplink signal may be sent, or the second uplink signal may be sent, or the first uplink signal and the second uplink signal may be sent, which is not limited.

In some embodiments, the first uplink signal may be switched to the second uplink signal to the second TRP after the first uplink signal is sent to the first TRP.

In some embodiments, the transmission policy for transmitting the first uplink signal may be determined according to the required duration and the transmission time difference, and/or the transmission policy for transmitting the second uplink signal may be determined according to the required duration and the transmission time difference, which is not limited.

In this embodiment, the terminal may determine the duration required for switching from transmitting the first uplink signal to transmitting the second uplink signal to the second TRP by transmitting the first uplink signal to the first TRP, determine the transmission time difference between the first time unit and the second time unit, and transmit the first uplink signal and/or the second uplink signal according to the required duration and the transmission time difference, so that, because the terminal is based on the capability of uplink simultaneous transmission and the capability of transmitting link switching of the terminal, different strategies are adopted to ensure that the transmission of the uplink signal is correctly performed in consideration of different situations, thereby effectively improving the accuracy of the transmission of the uplink signal of the terminal.

Fig. 3 is a flowchart of a signaling method provided in an embodiment of the disclosure, where the method is performed by a terminal. The signal transmission method in the present embodiment may be applied to a terminal, and is not limited thereto.

As shown in fig. 3, the method may include, but is not limited to, the steps of:

s301: a length of time required for the terminal to switch from transmitting the first uplink signal to transmitting the second uplink signal to the second TRP is determined.

The description of S301 may be specifically referred to the above embodiments, and will not be repeated here.

S302: a first time advance for transmitting a first uplink signal and a second time advance for transmitting a second uplink signal are determined.

In some embodiments, the time advance TA of the terminal sending the first uplink signal to the first TRP may be referred to as a first time advance, and the time advance TA of the terminal sending the second uplink signal to the second TRP may be referred to as a second time advance, which is not limited.

In some embodiments, the first time advance may be represented as T _TA1 The second time advance may be expressed as T _TA2 There is no limitation in this regard.

In some embodiments, the first time advance and the second time advance may be used as signal transmission references, which is not limited.

S303: a reception time difference between a time of receiving the first TRP downlink signal and a time of receiving the second TRP downlink signal is determined.

The downlink signal sent by the first TRP to the terminal may be referred to as a first TRP downlink signal, and the downlink signal sent by the second TRP to the terminal may be referred to as a second TRP downlink signal, which is not limited thereto.

Wherein the reception time difference represents a time interval between a time when the terminal receives the first TRP downlink signal and a time when the terminal receives the second TRP downlink signal, without limitation.

In some embodiments, the receive time difference may be represented by (Receive Timing Difference, RTD), without limitation.

In some embodiments, the terminal switches from transmitting the first uplink signal to the first TRP to transmitting the second uplink signal to the second TRP, and the receiving time difference may be determined by using the downlink time of TRP1 as the receiving reference time, which is not limited.

In some embodiments, the terminal may use the downlink time of TRP1 as the receiving reference time, and may calculate a receiving time difference RTD of TRP2 based on the downlink time of TRP1, which is not limited.

S304: and determining a sending time difference according to the first time advance, the second time advance and the receiving time difference.

In some embodiments, after determining the first time advance for transmitting the first uplink signal and the second time advance for transmitting the second uplink signal and determining the reception time difference between the time of receiving the first TRP downlink signal and the time of receiving the second TRP downlink signal, the transmission time difference may be determined according to the first time advance, the second time advance, and the reception time difference, which is not limited.

In some embodiments, the first time advance, the second time advance, and the receiving time difference may be mathematically calculated to obtain a transmission time difference between the first time unit and the second time unit, which is not limited.

S305: and transmitting the first uplink signal and/or the second uplink signal according to the required duration and the transmission time difference.

The description of S305 may be specifically referred to the above embodiments, and will not be repeated here.

Therefore, in this embodiment, because the terminal uses the capability of uplink simultaneous transmission and the capability of transmission link switching of the terminal, different strategies are adopted to ensure that the transmission of the uplink signal is performed correctly, so that the accuracy of the transmission of the uplink signal of the terminal can be effectively improved. And the terminal can also consider the first time advance of sending the first uplink signal, the second time advance of sending the second uplink signal and the receiving time difference between the time of receiving the first TRP downlink signal and the time of receiving the second TRP downlink signal to determine the sending time difference between the first time unit and the second time unit, so that the flexibility and the accuracy of determining the sending time difference can be effectively improved, an accurate resolving result can be supported, and therefore the terminal decision accuracy and the sending accuracy of the terminal uplink signal are improved.

The signal sending method provided by the embodiment of the disclosure can also determine whether the first time unit and the second time unit have coincident time portions, obtain a determination result, and determine a sending time difference according to the determination result, the first time advance, the second time advance and the receiving time difference, thereby further improving the determination accuracy of the sending time difference between the first time unit and the second time unit.

Fig. 4a and fig. 4b show diagrams of uplink and downlink signal time axes between a terminal and a TRP in an embodiment of the present disclosure, fig. 4b shows diagrams of uplink and downlink signal time axes between a terminal and a TRP in another embodiment of the present disclosure, in fig. 4a, DL2 arrives at the terminal later than DL1, DL2 arrives at the terminal earlier than DL1 arrives at the terminal in fig. 4b, DL2 indicates a portion of a second TRP downlink signal located in one time unit, DL1 indicates a portion of a first TRP downlink signal located in a first time unit, UL1 indicates a portion of a first uplink signal located in a second time unit, UL2 indicates a portion of a second uplink signal located in a second time unit, the first time unit is slotn occupied by UL1, and the second time unit is slotn+1 occupied by UL 2. It can be seen from fig. 4a that there is no overlapping time portion for the first time unit and the second time unit, and from fig. 4b that there is an overlapping time portion for the first time unit and the second time unit.

In the embodiment of the disclosure, the sending time difference between the first time unit and the second time unit can be determined according to whether the overlapping time part exists between the first time unit and the second time unit, so that the application scene expansion of the signal sending method can be facilitated, and the method can be effectively adapted to personalized signal sending scenes.

According to the signal transmission method provided by the embodiment of the disclosure, if no overlapping time part exists between the first time unit and the second time unit, the first time difference between the first time advance and the second time advance is determined, and the receiving time difference and the first time difference are summed to obtain the transmission time difference, so that the accuracy of determining the transmission time difference under the corresponding signal transmission scene is effectively improved.

For example, Δt=rtd+t may be based on the formula _TA1 -T _TA2 Determining hairThe transmission time difference DeltaT, RTD represents the reception time difference, T _TA1 Representing a first time advance, T _TA2 A first time difference representing the second time advance, the first time advance and the second time advance being T _TA1 -T _TA2 There is no limitation in this regard.

According to the signal transmission method provided by the embodiment of the disclosure, if the overlapping time part exists between the first time unit and the second time unit, the receiving time difference and the second time difference of the first time advance are determined, and the second time difference and the second time advance are summed to obtain the transmission time difference, so that the determination accuracy of the transmission time difference under the corresponding signal transmission scene is effectively improved.

For example, Δt=rtd-T may be based on the formula _TA1 +T _TA2 Determining a transmit time difference DeltaT, RTD representing a receive time difference, T _TA1 Representing a first time advance, T _TA2 A second time difference representing a second time advance, the reception time difference and the first time advance being RTD-T _TA1 There is no limitation in this regard.

The signal sending method provided by the embodiment of the disclosure can also determine the CP duration of the cyclic prefix of the second uplink signal, and send the first uplink signal and/or the second uplink signal according to the CP duration, the required duration and the sending time difference, so that the decision accuracy and the decision effect of the terminal can be effectively improved.

In some embodiments, the CP duration refers to the duration occupied by the CP in the second uplink signal, which is not limited.

Fig. 5a is a flowchart of another signaling method provided in an embodiment of the present disclosure, where the method is performed by a terminal. The signal transmission method in the present embodiment may be applied to a terminal, and is not limited thereto.

As shown in fig. 5a, the method may include, but is not limited to, the steps of:

s501a: a time period required for a terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second transmission and reception point TRP is determined.

S502a: and determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting the first uplink signal, the second time unit is a time unit occupied by transmitting the second uplink signal, and no overlapping time part exists between the first time unit and the second time unit.

The description of this embodiment may refer to fig. 4a, where DL2 arrives at the terminal later than DL1, and there is no overlapping time portion between the first time unit and the second time unit.

S503a: and if the required duration is less than or equal to the transmission time difference, transmitting the first uplink signal based on the first time unit and transmitting the second uplink signal based on the second time unit.

As shown in fig. 4a, in the case where there is no overlapping time portion between the first time unit and the second time unit, Δt >0, and the terminal has Δt (an optional example of a transmission time difference) time as a switching time in the uplink switching process of TRP1 to TRP2, the terminal may consider that the transmission link switching may be completed in an idle time between two slots (an optional example of a time unit) if Ts < = Δt according to its own switching time Ts (an optional example of a required duration), and the terminal may normally perform switching and uplink transmission of TRP1 and TRP2 before and after switching.

In some embodiments, the terminal may perform handover normally and uplink transmission of TRP1 and TRP2 before and after handover, for example, may send a first uplink signal based on a first time unit and send a second uplink signal based on a second time unit, which is not limited.

Therefore, the normal signal transmission of the terminal can be effectively ensured, and the signal transmission accuracy is improved.

Fig. 5b is a flowchart of another signaling method provided in an embodiment of the present disclosure, where the method is performed by a terminal. The signal transmission method in the present embodiment may be applied to a terminal, and is not limited thereto.

As shown in fig. 5b, the method may include, but is not limited to, the steps of:

s501b: a time period required for a terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second transmission and reception point TRP is determined.

S502b: and determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting the first uplink signal, the second time unit is a time unit occupied by transmitting the second uplink signal, and no overlapping time part exists between the first time unit and the second time unit.

S503b: and determining the Cyclic Prefix (CP) duration of the second uplink signal.

S504b: and if the required duration is greater than the transmission time difference and less than or equal to the first sum value duration, transmitting a first uplink signal based on the first time unit, and transmitting a third uplink signal based on the second time unit, wherein the first sum value duration is the sum duration of the transmission time difference and the CP duration, and the third uplink signal is obtained by processing the second uplink signal.

As shown in fig. 4a, in the case where there is no overlapping time portion between the first time unit and the second time unit, Δt >0, if Δt < Ts < = Δt+cp2, where CP2 is a cyclic prefix CP duration of UL2 transmitted by the terminal to TRP2, since the switching time occupies a part of time of TRP2 uplink transmission but its time is within CP and does not affect UL2 transmission, the second uplink signal processing may be performed, the signal obtained by the processing may be referred to as a third uplink signal, and the first uplink signal may be transmitted based on the first time unit, and the third uplink signal may be transmitted based on the second time unit, for example, a partial discard process may be performed on the symbol of the second uplink signal, which is not limited.

In some embodiments, the first sum duration may be, for example, Δt+cp2, without limitation.

The signal sending method provided by the embodiment of the present disclosure may obtain a third uplink signal based on processing the second uplink signal in the following manner: and discarding the orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols in the CP duration of the second uplink signal to obtain a third uplink signal, so that the accuracy of the first uplink signal and the second uplink signal is improved under the condition that the information integrity carried by the second uplink signal is not affected.

In some embodiments, the terminal may discard the transmission of OFDM symbols in the CP time of UL2, which is not limited.

Fig. 5c is a flowchart of another signaling method provided in an embodiment of the present disclosure, where the method is performed by a terminal. The signal transmission method in the present embodiment may be applied to a terminal, and is not limited thereto.

As shown in fig. 5c, the method may include, but is not limited to, the steps of:

s501c: a time period required for a terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second transmission and reception point TRP is determined.

S502c: and determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting the first uplink signal, the second time unit is a time unit occupied by transmitting the second uplink signal, and no overlapping time part exists between the first time unit and the second time unit.

S503c: and determining the Cyclic Prefix (CP) duration of the second uplink signal.

S504c: and if the required duration is longer than the first sum value duration, transmitting the first uplink signal and the second uplink signal according to the first priority of the first uplink signal and the second priority of the second uplink signal, wherein the first sum value duration is the sum duration of the transmission time difference and the CP duration.

As shown in fig. 4a, in the case where there is no overlapping time portion between the first time unit and the second time unit, Δt >0, Δt+cp2< Ts, where CP2 is the cyclic prefix CP duration of the terminal transmitting UL2 to TRP2, and the first sum value duration may be, for example, Δt+cp2, which may affect UL1 slot n or UL2 slot n+1, regardless of placement. The terminal can compare the priority of the UL1 slot n and the UL2 slot n+1 transmission information, and determine the transmission policy according to the priority of the UL1 slot n and the priority of the UL2 slot n+1, which is not limited.

In some embodiments, the priority of UL1 slot n may be referred to as a first priority, where the first priority may represent the priority of information transmitted by UL1 slot n, the priority of UL2 slot n+1 may be referred to as a second priority, where the second priority may represent the priority of information transmitted by UL2 slot n+1, which is not limited.

In some embodiments, for determining the transmission policy according to the priority of UL1 slot n and the priority of UL2 slot n+1, the following description may be specifically referred to.

Therefore, if the required time length is longer than the sum time length of the transmission time difference and the CP time length under the condition that the overlapping time part does not exist between the first time unit and the second time unit, the first uplink signal and the second uplink signal are transmitted according to the first priority of the first uplink signal and the second priority of the second uplink signal, and the first uplink signal and the second uplink signal can be ensured to be correctly transmitted.

Fig. 6a is a flow chart of yet another signaling method provided by an embodiment of the present disclosure, which is performed by a terminal. The signal transmission method in the present embodiment may be applied to a terminal, and is not limited thereto.

As shown in fig. 6a, the method may include, but is not limited to, the steps of:

S601a: a time period required for a terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second transmission and reception point TRP is determined.

S602a: and determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting the first uplink signal, the second time unit is a time unit occupied by transmitting the second uplink signal, and the first time unit and the second time unit have overlapping time parts.

The description of this embodiment is given with reference to fig. 4b, where in fig. 4b DL2 arrives at the terminal earlier than DL1, and there is a coincidence of time portions between the first time unit and the second time unit.

S603a: and determining the Cyclic Prefix (CP) duration of the second uplink signal.

S604a: and if the second sum time length is greater than or equal to zero and less than or equal to the CP time length, transmitting a first uplink signal based on the first time unit and transmitting a third uplink signal based on the second time unit, wherein the second sum time length is the sum time length of the transmission time difference and the required time length, and the third uplink signal is obtained by processing the second uplink signal.

As shown in fig. 4b, if there is a coincident time portion between the first time unit and the second time unit, if 0< = Δt+ts < = CP2, CP2 is the cyclic prefix CP duration of the UL2 transmitted by the terminal to TRP2, since the switching time occupies a part of the time of the TRP2 uplink transmission, but the time is within the CP and does not affect the UL2 transmission, the second uplink signal processing may be performed, the signal obtained by the processing may be referred to as a third uplink signal, and the first uplink signal is transmitted based on the first time unit, and the third uplink signal is transmitted based on the second time unit, for example, the symbol of the second uplink signal may be subjected to partial discarding processing, which is not limited.

In some embodiments, the second sum time period may be, for example, Δt+ts, without limitation.

The signal sending method provided by the embodiment of the present disclosure may obtain a third uplink signal based on processing the second uplink signal in the following manner: and discarding the OFDM symbols in the CP duration in the second uplink signal to obtain a third uplink signal, so that the accuracy of the first uplink signal and the second uplink signal is improved under the condition that the integrity of the information carried by the second uplink signal is not affected.

Fig. 6b is a flowchart of still another signaling method provided in an embodiment of the present disclosure, which is performed by a terminal. The signal transmission method in the present embodiment may be applied to a terminal, and is not limited thereto.

As shown in fig. 6b, the method may include, but is not limited to, the steps of:

s601b: a time period required for a terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second transmission and reception point TRP is determined.

S602b: and determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting the first uplink signal, the second time unit is a time unit occupied by transmitting the second uplink signal, and the first time unit and the second time unit have overlapping time parts.

S603b: and determining the Cyclic Prefix (CP) duration of the second uplink signal.

S604b: and if the second sum time length is longer than the CP time length, transmitting the first uplink signal and the second uplink signal according to the first priority of the first uplink signal and the second priority of the second uplink signal.

As shown in fig. 4b, in case there is a coincident time portion between the first time unit and the second time unit, if CP2< Δt+ts, where CP2 is the cyclic prefix CP duration of the terminal transmitting UL2 to TRP2, the second sum duration may be, for example, Δt+ts, and the second sum duration may have an effect on UL1 slot n or UL2 slot n+1, regardless of the placement. The terminal can compare the priority of the UL1 slot n and the UL2 slot n+1 transmission information, and determine the transmission policy according to the priority of the UL1 slot n and the priority of the UL2 slot n+1, which is not limited.

Therefore, under the condition that the overlapping time part exists between the first time unit and the second time unit, if the CP time length is smaller than the sum time length of the sending time difference and the required time length, the first uplink signal and the second uplink signal are sent according to the first priority of the first uplink signal and the second priority of the second uplink signal, and the first uplink signal and the second uplink signal can be correctly sent.

In the signal transmission method provided in the embodiment of the present disclosure, when the step of transmitting the first uplink signal and the second uplink signal according to the first priority of the first uplink signal and the second priority of the second uplink signal is performed, if the first priority is higher than or equal to the second priority, the first uplink signal is transmitted based on the first time unit, and the second uplink signal is transmitted based on the first portion of the second time unit, so that the uplink signal with a relatively high priority can be accurately transmitted, and the communication scenario of the signal transmission method is effectively expanded.

In some embodiments, the second uplink signal is transmitted based on the first portion of the second time unit, e.g., the second uplink signal is transmitted occupying a portion of the second time unit, which may be referred to as the first portion of the second time unit, without limitation.

In other embodiments, in response to having transmitted the first uplink signal based on the first time unit, switching to transmitting the second uplink signal to the second TRP based on the second portion of the second time unit can effectively support the terminal for transmission link switching.

In some embodiments, the transmission link switch is completed based on a second portion of the second time unit, e.g., another portion of the second time unit is occupied, which may be referred to as a second portion of the second time unit, without limitation.

In the signal transmission method provided in the embodiment of the present disclosure, when the step of transmitting the first uplink signal and the second uplink signal according to the first priority of the first uplink signal and the second priority of the second uplink signal is performed, the first uplink signal may be transmitted based on the first portion of the first time unit and the second uplink signal may be transmitted based on the second time unit when the first priority is lower than or equal to the second priority, so that the uplink signal with a relatively high priority may be accurately transmitted, and the communication scenario of the signal transmission method may be effectively expanded.

In some embodiments, the first uplink signal is transmitted based on a first portion of the first time unit, e.g., the second uplink signal is transmitted occupying a portion of the first time unit, which may be referred to as the first portion of the first time unit, without limitation.

In other embodiments, in response to having transmitted the first uplink signal based on the first portion of the first time unit, switching to transmitting the second uplink signal to the second TRP based on the second portion of the first time unit can effectively support the terminal for transmission link switching.

In some embodiments, the transmission link handoff is completed based on a second portion of the first time unit handoff, e.g., another portion of the first time unit is occupied, which may be referred to as the second portion of the first time unit, without limitation.

In some embodiments, as shown in fig. 4a, in the case where there is no overlapping time portion between the first time unit and the second time unit, the terminal determines the transmission policy based on comparing the priorities of UL1 slot n and UL2 slot n+1 transmission information, and may, for example, place a switching time (Ts- Δt) exceeding Δt in a lower priority UL slot, for example, occupy a (Ts- Δt) duration in the lower priority UL slot to support transmission link switching, which is not limited.

In some embodiments, as shown in fig. 4b, in the case where there is a coincident time portion between the first time unit and the second time unit, the terminal determines the transmission policy based on comparing the priorities of UL1 slot n and UL2 slot n+1 transmission information, and may, for example, place the switching time (ts+Δt-CP 2) exceeding CP2 in the UL slot with lower priority, for example, occupy the duration of (ts+Δt-CP 2) in the UL slot with lower priority to support transmission link switching, which is not limited.

In some embodiments, in the case where there is no overlapping time portion between the first time unit and the second time unit, the (Ts- Δt) duration may be an optional example of the second portion of the first time unit if the first priority of the first uplink signal is lower than the second priority of the second uplink signal, and the (Ts- Δt) duration may be an optional example of the second portion of the second time unit if the first priority of the first uplink signal is higher than the second priority of the second uplink signal, without limitation.

In some embodiments, in the case where there is a coincident time portion between the first time unit and the second time unit, the (ts+Δt-CP 2) duration may be an alternative example of the second portion of the first time unit if the first priority of the first uplink signal is lower than the second priority of the second uplink signal, and the (ts+Δt-CP 2) duration may be an alternative example of the second portion of the second time unit if the first priority of the first uplink signal is higher than the second priority of the second uplink signal, without limitation.

In some embodiments, if the first priority of the first uplink signal is equal to the second priority of the second uplink signal, the terminal may determine the transmission policy by itself, for example, whether to occupy the second portion of the first time unit to complete the transmission link switch or to occupy the second portion of the second time unit to complete the transmission link switch, which is not limited.

Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the disclosure. The communication device 70 shown in fig. 7 may include a transceiver module 701 and a processing module 702. The transceiver module 701 may include a transmitting module for implementing a transmitting function and/or a receiving module for implementing a receiving function, and the transceiver module 701 may implement the transmitting function and/or the receiving function.

The communication device 70 may be a terminal (such as the terminal in the foregoing method embodiment), a device in the terminal, or a device that can be used in match with the terminal.

A communication device 70, on the terminal side, comprising:

a processing module 702, configured to determine a duration required for the terminal to switch from transmitting the first uplink signal to transmitting the second uplink signal to the second TRP by transmitting the first uplink signal to the first transmission receiving point TRP, and determine a transmission time difference between a first time unit and a second time unit, where the first time unit is a time unit occupied by transmitting the first uplink signal, and the second time unit is a time unit occupied by transmitting the second uplink signal.

The transceiver module 701 is configured to send the first uplink signal and/or the second uplink signal according to the required duration and the sending time difference.

In this embodiment, the terminal may determine a time period required for switching from transmitting the first uplink signal to transmitting the second uplink signal to the second TRP by transmitting the first uplink signal to the first TRP, determine a transmission time difference between the first time unit and the second time unit, and transmit the first uplink signal and/or the second uplink signal according to the required time period and the transmission time difference, so that, because the terminal performs uplink simultaneous transmission and performs transmission link switching on the basis of the capability of the terminal, different strategies are adopted to ensure that the uplink signal is transmitted correctly in consideration of different situations, thereby effectively improving the accuracy of uplink signal transmission of the terminal.

Fig. 8 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure. The communication device 80 may be a terminal (such as a terminal in the foregoing method embodiment), or may be a chip, a chip system, a processor, or the like that supports the terminal to implement the foregoing method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communication device 80 may include one or more processors 801. The processor 801 may be a general purpose processor or a special purpose processor, or the like. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 80 may further include one or more memories 802, on which a computer program 804 may be stored, and in which a processor 801 may store a computer program 803, the processor 801 executing the computer program 804 and/or the computer program 803 to cause the communication device 80 to perform the method described in the method embodiments above.

Optionally, the memory 802 may also have data stored therein. The communication device 80 and the memory 802 may be provided separately or may be integrated.

Optionally, the communication device 80 may further include a transceiver 805, an antenna 806. The transceiver 805 may be referred to as a transceiver unit, a transceiver circuit, or the like, for implementing a transceiver function. The transceiver 805 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 807 may also be included in the communication device 80. Interface circuitry 807 is configured to receive code instructions and transmit them to processor 801. The processor 801 executes code instructions to cause the communication device 80 to perform the methods described in the method embodiments described above.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in the processor 801. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 801 may store a computer program 803, the computer program 803 running on the processor 801 may cause the communication device 80 to perform the method described in the method embodiments above. The computer program 803 may be solidified in the processor 801, in which case the processor 801 may be implemented in hardware.

In one implementation, the communication device 80 may include circuitry that may implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this disclosure may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device in the above embodiment description may be a terminal (a terminal in the foregoing method embodiment), but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited by fig. 8. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, terminal, intelligent terminal, cellular telephone, wireless device, handset, mobile unit, vehicle-mounted device, access network device, cloud device, artificial intelligent device, etc.;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, see fig. 9, fig. 9 is a schematic structural diagram of a chip according to an embodiment of the present disclosure, and the chip shown in fig. 9 includes a processor 901 and an interface 902. Wherein the number of processors 901 may be one or more, and the number of interfaces 902 may be a plurality.

For the case where the chip is used to implement the functions of the terminal in the embodiments of the present disclosure:

a processor 901 for implementing the method steps and the like in the embodiments of fig. 2-6 described above.

Optionally, the chip further comprises a memory 903, the memory 903 being used for storing the necessary computer programs and data.

Those of skill in the art will further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (step) described in connection with the embodiments of the disclosure may be implemented by electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the functionality in a variety of ways for each particular application, but such implementation should not be construed as beyond the scope of the embodiments of the present disclosure.

The disclosed embodiments also provide a communication system comprising the communication device as a terminal in the embodiment of fig. 7 and the communication device as an access network apparatus (e.g., the first TRP and the second TRP in the embodiment of the method) or the system comprises the communication device as a terminal in the embodiment of fig. 8 and the communication device as an access network apparatus (e.g., the first TRP and the second TRP in the embodiment of the method).

The present disclosure also provides a readable storage medium having instructions stored thereon which, when executed by a computer, perform the functions of any of the method embodiments described above.

The present disclosure also provides a computer program product which, when executed by a computer, performs the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions described in accordance with the embodiments of the present disclosure are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the various numbers of first, second, etc. referred to in this disclosure are merely for ease of description and are not intended to limit the scope of embodiments of this disclosure, nor to indicate sequencing.

At least one of the present disclosure may also be described as one or more, a plurality may be two, three, four or more, and the present disclosure is not limited. In the embodiment of the disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the technical features described by "first", "second", "third", "a", "B", "C", and "D" are not in sequence or in order of magnitude.

The correspondence relationships shown in the tables in the present disclosure may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, and the present disclosure is not limited thereto. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table in the present disclosure, the correspondence shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters indicated in the tables may be other names which are understood by the communication device, and the values or expressions of the parameters may be other values or expressions which are understood by the communication device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in this disclosure may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-sintering.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A signal transmission method, performed by a terminal, the method comprising:

determining a time period required by the terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second TRP;

determining a transmission time difference between a first time unit and a second time unit, wherein the first time unit is a time unit occupied by transmitting a first uplink signal, and the second time unit is a time unit occupied by transmitting a second uplink signal;

and transmitting the first uplink signal and/or the second uplink signal according to the required duration and the transmission time difference.

2. The method of claim 1, wherein the determining the transmission time difference between the first time unit and the second time unit comprises:

determining a first time advance for transmitting a first uplink signal and a second time advance for transmitting a second uplink signal;

determining a reception time difference between a time of receiving the first TRP downlink signal and a time of receiving the second TRP downlink signal;

and determining the sending time difference according to the first time advance, the second time advance and the receiving time difference.

3. The method of claim 2, wherein the determining the transmit time difference from the first time advance, the second time advance, and the receive time difference comprises:

determining whether a coincidence time part exists between the first time unit and the second time unit, and obtaining a determination result;

and determining the sending time difference according to the determination result, the first time advance, the second time advance and the receiving time difference.

4. The method of claim 3, wherein said determining said transmission time difference based on said determination, said first time advance, said second time advance, and said reception time difference comprises any one of:

if the determination result is that the coincident time part does not exist, determining a first time difference between the first time advance and the second time advance, and summing the receiving time difference and the first time difference to obtain the sending time difference;

and if the determination result is that the coincident time part exists, determining a second time difference between the receiving time difference and the first time advance, and summing the second time difference and the second time advance to obtain the sending time difference.

5. The method according to any of claims 1-4, wherein said transmitting said first uplink signal and/or said second uplink signal according to said required duration and said transmission time difference comprises:

determining the period of the cyclic prefix CP of the second uplink signal;

and transmitting the first uplink signal and/or the second uplink signal according to the CP duration, the required duration and the transmission time difference.

6. The method of claim 5, wherein there is no overlapping time portion for the first time unit and the second time unit;

wherein the sending the first uplink signal and/or the second uplink signal according to the CP duration, the required duration, and the sending time difference includes any one of the following:

if the required duration is less than or equal to the transmission time difference, transmitting the first uplink signal based on the first time unit and transmitting the second uplink signal based on the second time unit;

if the required duration is greater than the transmission time difference and less than or equal to a first sum value duration, transmitting the first uplink signal based on the first time unit, and transmitting a third uplink signal based on the second time unit, wherein the first sum value duration is the sum duration of the transmission time difference and the CP duration, and the third uplink signal is obtained by processing the second uplink signal;

And if the required duration is greater than the first sum value duration, transmitting the first uplink signal and the second uplink signal according to the first priority of the first uplink signal and the second priority of the second uplink signal.

7. The method of claim 5, wherein there is a coincident time portion for the first time unit and the second time unit;

if a second sum time length is greater than or equal to zero and less than or equal to the CP time length, transmitting the first uplink signal based on the first time unit and transmitting a third uplink signal based on the second time unit, wherein the second sum time length is the sum time length of the transmission time difference and the required time length, and the third uplink signal is obtained by processing the second uplink signal;

and if the second sum time is longer than the CP time, transmitting the first uplink signal and the second uplink signal according to the first priority of the first uplink signal and the second priority of the second uplink signal.

8. The method according to claim 6 or 7, wherein the third uplink signal is obtained based on processing the second uplink signal in the following way:

and discarding the OFDM symbols in the CP duration in the second uplink signal to obtain the third uplink signal.

9. The method according to claim 6 or 7, wherein said transmitting said first uplink signal and said second uplink signal according to a first priority of said first uplink signal and a second priority of said second uplink signal comprises any one of:

transmitting the first uplink signal based on the first time unit and transmitting the second uplink signal based on a first portion of the second time unit if the first priority is higher than or equal to the second priority;

and if the first priority is lower than or equal to the second priority, transmitting the first uplink signal based on the first part of the first time unit and transmitting the second uplink signal based on the second time unit.

10. The method of claim 9, wherein the method further comprises any one of:

Switching to transmitting a second uplink signal to the second TRP based on a second portion of the second time unit in response to having transmitted the first uplink signal based on the first time unit;

in response to having transmitted the first uplink signal based on the first portion of the first time unit, switching to transmitting a second uplink signal to the second TRP based on the second portion of the first time unit.

11. A communication device, the device comprising:

a processing module, configured to determine a duration required for the terminal to switch from transmitting a first uplink signal to transmitting a second uplink signal to a second TRP, where the first time unit is a time unit occupied by transmitting the first uplink signal, and the second time unit is a time unit occupied by transmitting the second uplink signal;

and the receiving and transmitting module is used for transmitting the first uplink signal and/or the second uplink signal according to the required duration and the transmission time difference.

12. A communication system, characterized in that the communication system comprises a transmission terminal, a first transmission reception point TRP, and a second TRP, the terminal being configured to perform:

Determining a time period required for switching from transmitting a first uplink signal to transmitting a second uplink signal to the second TRP by transmitting the first uplink signal to the first transmission receiving point TRP;

13. A computer readable storage medium storing instructions which, when executed, cause the method of any one of claims 1-10 to be implemented.