Uplink signal transmission method, terminal, and storage medium

Abstract

The present disclosure relates to the field of wireless communication, and provides an uplink signal transmission method, a terminal, and a storage medium. The terminal is configured with at least three bands, and transmits an uplink signal in one or two of the at least three bands configured for the terminal.

Description

Technical Field

[0001] Cross - reference to related applications This disclosure is based on and claims priority to Chinese Patent Application No. 202210616507.4 filed on June 1, 2022, the disclosure of which is incorporated herein by reference in its entirety.

[0002] This disclosure relates to the field of wireless communication, and particularly to an uplink signal transmission method, a terminal, and a storage medium.

Background Art

[0003] With the continuous evolution of 5G networks and the refarming of the golden low - frequency band, multiple frequency bands with low frequencies below 1 GHz, medium frequencies around 2 GHz, and high frequencies above 3.5 GHz will exist in the mobile communication FR (Frequency Range) 1 network.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Currently, commercially available handheld terminals only support an uplink dual transmitter and are only configured with a maximum of two frequency bands.

Means for Solving the Problems

[0005] According to one aspect of the present disclosure, there is provided an uplink signal transmission method in which a terminal is configured with at least three bands, the method including transmitting an uplink signal in one or two of at least three bands configured for the terminal.

[0006] In some embodiments, transmitting an uplink signal in one or two of at least three bands configured for a terminal includes transmitting the uplink signal in any one of the at least three bands configured for the terminal, or transmitting the uplink signal simultaneously in the first band and the second band of the at least three bands configured for the terminal.

[0007] In some embodiments, the first band and the second band are any two of the at least three bands, or some two of the at least three bands configured for the terminal.

[0008] In some embodiments, the terminal has a single-layer data transmission capability or a two-layer data transmission capability in uplink in each of at least three bands configured for the terminal, and has a two-layer data transmission capability in uplink in at least one of the at least three bands configured for the terminal.

[0009] In some embodiments, when the terminal transmits uplink signals in different bands at different times, a transmitter switchover across bands is performed.

[0010] In some embodiments, when the number of transmitters in at least one uplink band of the terminal is different at different times, a transmitter switchover across bands is performed.

[0011] In some embodiments, when transmitter switching across bands is performed between a first band and a second band among at least three bands configured for a terminal, the terminal supports at least one of a first condition and a second condition. The first condition includes that the terminal supports switching between the first band and the second band based on carrier aggregation. The second condition includes that the terminal supports switching between the first band and the second band based on supplementary uplink.

[0012] In some embodiments, when the terminal simultaneously transmits uplink signals on a first band and a second band among at least three bands configured for the terminal and performs transmitter switching across bands, the terminal supports a third condition. The third condition includes that the terminal supports switching between the first band and the second band based on carrier aggregation and satisfies the radio frequency requirements of uplink carrier aggregation on the first band and the second band.

[0013] In some embodiments, the terminal does not need to satisfy the radio frequency requirements for uplink simultaneous transmission on at least three bands configured for the terminal.

[0014] In some embodiments, the switching period of transmitter switching between a first band and a second band when at least three bands are configured for the terminal is the same as the switching period of transmitter switching between the first band and the second band when two bands are configured for the terminal.

[0015] In some embodiments, the switching periods of transmitter switching between any two bands among at least three bands configured for the terminal are the same or different.

[0016] In some embodiments, when the terminal has a two-layer data transmission capability in the uplink in the first band and the second band, and two bands are configured for the terminal, the same switching period for performing an uplink dual transmitter-dual transmitter switch between the first band and the second band is reused as the switching period for performing a transmitter switch between the first band and the second band.

[0017] In some embodiments, when the terminal has a single-layer data transmission capability in the uplink in the first band and a two-layer data transmission capability in the uplink in the second band, and two bands are configured for the terminal, the same switching period for performing an uplink single transmitter-dual transmitter switch between the first band and the second band is reused as the switching period for performing a transmitter switch between the first band and the second band.

[0018] In some embodiments, when the terminal has a single-layer data transmission capability in the uplink in both the first band and the second band, and two bands are configured for the terminal, the same switching period for performing an uplink single transmitter-single transmitter switch between the first band and the second band is reused as the switching period for performing a transmitter switch between the first band and the second band.

[0019] In some embodiments, the switching period of the transmitter switch between any two of at least three bands configured for the terminal is equal to or greater than the switching period of the transmitter switch between two bands configured for the terminal.

[0020] In some embodiments, the switching periods of the transmitter switches between any two of at least three bands configured for the terminal are the same or different.

[0021] In some embodiments, the switching period for transmitter switching between any two of at least three bands configured for the terminal is the same, and each of the switching times is the maximum value among a plurality of switching periods of any two bands for performing transmitter switching between the two bands.

[0022] In some embodiments, uplink transmission is not required during the switching period of transmitter switching.

[0023] In some embodiments, when the first transmitter of the terminal performs switching between a first band and a second band among at least three bands configured for the terminal, and the second transmitter is in a third band among at least three bands configured for the terminal without performing switching, the terminal can transmit an uplink signal in the third band during the switching period of switching between the first band and the second band.

[0024] In some embodiments, when the first transmitter of the terminal performs switching between a first band and a second band among at least three bands configured for the terminal, and the second transmitter is in a third band among at least three bands configured for the terminal without performing switching, the terminal does not transmit an uplink signal in the third band during the switching period of switching between the first band and the second band.

[0025] According to another aspect of the present disclosure, a terminal is provided, the terminal is configured with at least three bands, and the terminal includes a signal transmission unit configured to transmit an uplink signal in one or two of at least three bands configured for the terminal.

[0026] According to another aspect of the present disclosure, a terminal is also provided, which includes a memory and a processor coupled to the memory. The processor is configured to execute the uplink signal transmission method described above based on instructions stored in the memory.

[0027] According to still another aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer program instructions for implementing the uplink signal transmission method described above when executed by a processor is also provided.

[0028] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0029] The accompanying drawings, which are incorporated herein and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] The present disclosure will be more clearly understood from the following detailed description with reference to the accompanying drawings.

Brief Description of the Drawings

[0031]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0032] Here, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the relative arrangements, mathematical formulas, and numerical values of the components and steps described in these examples do not limit the scope of the present invention.

[0033] At the same time, for ease of description, it should be understood that the dimensions of the various parts shown in the drawings are not drawn to actual scale.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended as a limitation on the present invention, its applications, or uses.

[0035] Technologies, methods, and devices known to those of ordinary skill in the relevant technical fields may not be discussed in detail, but where appropriate, these technologies, methods, and devices should be regarded as part of this specification.

[0036] Of all the examples shown and discussed in this specification, any specific values should be construed as merely illustrative and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] In the accompanying drawings, like reference numerals and letters are used to denote like items, and thus, once an item is defined in one drawing, there is no need for further consideration in the accompanying drawings.

[0038] For a clear understanding of the objectives, technical solutions, and advantages of the present disclosure, the present disclosure will be further described in detail hereinafter in connection with the accompanying drawings and embodiments.

[0039] In related technologies, commercially available handheld terminals cannot flexibly utilize all uplink spectrum resources.

[0040] FIG. 1 is a flowchart of an uplink signal transmission method according to some embodiments of the present disclosure.

[0041] In step 110, a terminal is configured with at least three bands.

[0042] In FR1 in an access network, due to the existence of multiple low frequencies (such as 700 MHz, 800 MHz, and 900 MHz) below 1 GHz, intermediate frequencies around 2 GHz (1.8 GHz, 2.1 GHz), and high frequencies above 3.5 GHz, a terminal is configured with three or more bands. For example, a terminal is configured with three uplink bands of 700 MHz, 1.8 GHz, and 3.5 GHz, and each band includes one or more component carriers.

[0043] In step 120, the terminal transmits an uplink signal in one or two of at least three bands configured for the terminal.

[0044] In some embodiments, the terminal transmits an uplink signal in any one of at least three bands configured for the terminal, or transmits an uplink signal simultaneously in a first band and a second band of at least three bands configured for the terminal. The first band and the second band are any two of at least three bands, or some two of at least three bands for the terminal.

[0045] For example, the terminal is configured with bands A, B, and C, and supports the transmission of an uplink signal in any one of bands A, B, and C.

[0046] As another example, the terminal supports simultaneous transmission of uplink signals in bands A and B, bands B and C, or bands A and C. The specific bands in which the terminal transmits uplink signals are scheduled by the base station, and the total number of simultaneous transmitters in those bands is 2 or less.

[0047] For example, the terminal supports simultaneous transmission of uplink signals in bands A and B, or bands A and C, but does not support simultaneous transmission of uplink signals in bands B and C.

[0048] In some embodiments, the uplink transmission capability of the terminal in each band includes that the terminal has single-layer data transmission capability or two-layer data transmission capability in the uplink in each of at least three bands for the terminal, and has two-layer data transmission capability in the uplink in at least one of the at least three bands configured for the terminal.

[0049] For example, the terminal has a maximum single transmission capability in band A and a maximum dual transmission capability in bands B and C, or the terminal has a maximum single transmission capability in bands A and B and a maximum dual transmission capability in band C.

[0050] In the above embodiments, the terminal is equipped with two transmitters configured with three or more bands, supports simultaneous signal transmission in one or two bands, achieves dynamic utilization of multiple bands, and improves the utilization of uplink spectrum resources.

[0051] In other embodiments of the present disclosure, transmitter switching is performed when the terminal transmits uplink signals in different bands at different times. Alternatively, transmitter switching is performed when the number of transmitters in at least one uplink band of the terminal is different at different times.

[0052] For example, when the terminal transmits an uplink signal in band A at an earlier time and transmits an uplink signal in band B at a later time, and two-layer data transmission is used in both bands A and B, switching is performed for both transmitters.

[0053] As another example, at an earlier time, the first transmitter transmits an uplink signal in band A and the second transmitter transmits an uplink signal in band B. At a later time, both the first transmitter and the second transmitter transmit an uplink signal in band B, and switching is performed for the first transmitter at that time.

[0054] As another example, at an earlier time, the first transmitter transmits an uplink signal in band A and the second transmitter transmits an uplink signal in band C. At a later time, both the first transmitter and the second transmitter transmit an uplink signal in band B, and switching is performed for both transmitters at that time.

[0055] In another example, the first transmitter transmits an uplink signal at an earlier time, and the first transmitter and the second transmitter transmit an uplink signal simultaneously at a later time. The first transmitter operates in band A at both times, while the second transmitter operates in band A at an earlier time and operates in band B at a later time. Therefore, switching is only performed for the second transmitter.

[0056] As another example, at an earlier time, the first transmitter transmits an uplink signal in band A and the second transmitter operates in band A but does not transmit an uplink signal. At a later time, both the first transmitter and the second transmitter transmit an uplink signal in band B, and switching is performed for both transmitters at that time.

[0057] In some embodiments, when transmitter switching across bands is performed between a first band and a second band among at least three bands configured for a terminal, the terminal supports at least one of a first condition and a second condition. The first condition includes that the terminal supports switching between the first band and the second band based on carrier aggregation. The second condition includes that the terminal supports switching between the first band and the second band based on supplementary uplink. That is, the terminal supports operations in these two bands and supports uplink transmitter switching between these two bands.

[0058] In some embodiments, when a terminal simultaneously transmits uplink signals in a first band and a second band among at least three bands configured for the terminal to perform transmitter switching across bands, the terminal supports switching between the first band and the second band based on carrier aggregation and meets the radio frequency requirements of uplink carrier aggregation in the first band and the second band.

[0059] In some embodiments, a terminal does not need to support the radio frequency requirements for uplink simultaneous transmission in multiple bands.

[0060] In the above embodiments, when the bands for uplink transmission are different at different times or the number of transmission antennas of at least one uplink transmission band is different, dynamic switching is performed on the transmitter of the terminal, and switching requirements for the corresponding fallback band pair are defined.

[0061] In other embodiments of the present disclosure, the switching period of transmitter switching between a first band and a second band when at least three bands are configured for a terminal is the same as the switching period of transmitter switching between the first band and the second band when two bands are configured for the terminal.

[0062] For example, for a terminal configured with bands A and B, when the switching period of the transmitter between bands A and B is t1 in the related art, in this embodiment, for a terminal configured with three uplink bands A, B, and C, the switching period of the transmitter between bands A and B is also t1. For a terminal configured with bands A and C, when the switching period of the transmitter between bands A and C is t2 in the related art, in this embodiment, for a terminal configured with three uplink bands A, B, and C, the switching period of the transmitter between bands A and C is also t2.

[0063] In some embodiments, the transmitter switching period between any two bands is the same or different. That is, the switching periods for different band pairs are the same or different. For example, the switching period of the transmitter between bands A and B is t1, and the switching period of the transmitter between bands B and C is also t1, or the switching period of the transmitter between bands A and B is t1, and the switching period of the transmitter between bands B and C is t2.

[0064] In some embodiments, in the N-band switching mode, when both of the two bands for switching support an uplink dual transmitter, the "switching period for performing an uplink dual transmitter-dual transmitter switch between these two bands when these two bands are configured for the terminal" is reused. When one of the two bands for switching supports an uplink single transmitter and the other supports an uplink dual transmitter, the "switching period for performing an uplink single transmitter-dual transmitter switch between these two bands when these two bands are configured for the terminal" is reused. When both of the two bands for switching support an uplink single transmitter, the "switching period for performing an uplink single transmitter-single transmitter switch between these two bands when these two bands are configured for the terminal" is reused.

[0065] In the above embodiments, by determining the transmitter switching period, during the transmitter switching period, the base station does not schedule uplink transmission, and the terminal performs an uplink interruption, that is, the terminal does not transmit an uplink signal. For example, when one or two transmitters of the terminal perform a switch between two bands, the terminal does not transmit an uplink signal in these uplink bands during the switching period.

[0066] In other embodiments of the present disclosure, the switching period of the transmitter switch between any two of at least three bands configured for the terminal is equal to or greater than the switching period of the transmitter switch between two bands configured for the terminal.

[0067] In some embodiments, the switching period of the transmitter switching between any two of at least three bands configured for the terminal is the same or different. For example, the switching period of the terminal for switching between band A and B, and the switching period for switching between band A and C are both t1, or the switching period of the terminal for switching between band A and B is t1, and the switching period for switching between band A and C is t2.

[0068] In some embodiments, the switching periods of the transmitter switching between any two of at least three bands configured for the terminal are the same, and each of the switching times is the maximum value among a plurality of switching periods of any two bands for performing the transmitter switching between the two bands.

[0069] For example, in the related art, when the terminal is configured with band A and B and the switching period for switching between band A and B is t1, or when the terminal is configured with band A and C and the switching period for switching between band A and C is t2 (where t2 > t1), in the present disclosure, since the terminal is configured with band A, B, and C, the switching period for switching between band A and C and the switching period for switching between band A and B are both t2.

[0070] In the above embodiments, by determining the transmitter switching period, during the transmitter switching period, the base station does not schedule uplink transmission, and the terminal performs uplink interruption. For example, when one or two transmitters of the terminal perform switching between two bands, the terminal does not transmit uplink signals in these two bands during the switching period.

[0071] In some embodiments, when the first transmitter of the terminal executes a switch between two bands and the second transmitter is in a third band without performing a switch, the terminal may or may not transmit an uplink signal in the third uplink band during the switching period of the other two bands.

[0072] Any two of the above-mentioned embodiments refer to any two bands that can be used for uplink transmitter switching.

[0073] This disclosure focuses on the actual deployment scenarios of 5G advanced networks, which, in relation to the capabilities of commercially available handheld terminals and the current status of 3GPP standards, can efficiently and dynamically use uplink spectrum resources, thereby improving the utilization rate of spectrum resources.

[0074] FIG. 2 is a schematic structural diagram of a terminal according to some embodiments of the present disclosure. The terminal is configured with at least three bands and includes a transmission unit 210 configured to transmit an uplink signal in one or two of the at least three bands configured for the terminal.

[0075] In some embodiments, the terminal transmits an uplink signal in any one of the at least three bands configured for the terminal, or transmits an uplink signal simultaneously in the first band and the second band of the at least three bands configured for the terminal. The first band and the second band are any two of the at least three configured frequency bands, or some two bands of the at least three bands configured for the terminal.

[0076] In some embodiments, the uplink transmission capability of the terminal in each band includes that the terminal has the single-layer data transmission capability or the two-layer data transmission capability in the uplink in each of at least three bands configured for the terminal, and has the two-layer data transmission capability in the uplink in at least one of the at least three bands configured for the terminal.

[0077] In the above embodiments, the terminal is configured with more than three bands, and it is possible to transmit uplink signals in one or two of these bands to achieve dynamic utilization of multiple bands and improve the utilization of uplink spectrum resources.

[0078] In other embodiments of the present disclosure, the terminal further includes a switching unit 220, and the switching unit 220 is configured to perform transmitter switching across bands when the terminal transmits uplink signals in different bands at different times, or to perform transmitter switching across bands when the number of transmitters in at least one uplink band of the terminal is different at different times.

[0079] In some embodiments, when the transmitter switching across bands is performed between a first band and a second band among at least three bands configured for the terminal, the terminal supports at least one of a first condition and a second condition. The first condition includes that the terminal supports the switching between the first band and the second band based on carrier aggregation, and the second condition includes that the terminal supports the switching between the first band and the second band based on the supplementary uplink.

[0080] In some embodiments, when the terminal simultaneously transmits uplink signals in a first band and a second band among at least three bands configured for the terminal to perform transmitter switching across bands, the terminal supports switching between the first band and the second band based on carrier aggregation and meets the radio frequency requirements for uplink carrier aggregation in the first band and the second band.

[0081] In some embodiments, the terminal does not need to meet the radio frequency requirements for uplink simultaneous transmission in multiple configured bands.

[0082] In the above embodiments, when, at different times, the bands for uplink transmission are different from each other or the number of transmission antennas of at least one uplink transmission band is different, dynamic switching is performed on the transmitter of the terminal, and switching requirements for the corresponding fallback band pair are defined.

[0083] In other embodiments of the present disclosure, the switching period of the transmitter switching between the first band and the second band when at least three bands are configured for the terminal is the same as the switching period of the transmitter switching between the first band and the second band when two bands are configured for the terminal.

[0084] In some embodiments, the switching period of the transmitter switching between any two bands is the same or different.

[0085] In some embodiments, in the N-band switching mode, when both of the two bands for switching support an uplink dual transmitter, the "switching period for performing an uplink dual transmitter-dual transmitter switch between these two bands when these two bands are configured for the terminal" is reused. When one of the two bands for switching supports an uplink single transmitter and the other supports an uplink dual transmitter, the "switching period for performing an uplink single transmitter-dual transmitter switch between these two bands when these two bands are configured for the terminal" is reused. When both of the bands for switching support an uplink single transmitter, the "switching period for performing an uplink single transmitter-single transmitter switch between these two bands when these two bands are configured for the terminal" is reused.

[0086] In the above embodiments, by determining the transmitter switching period, during the transmitter switching period, the base station does not schedule uplink transmission and the terminal performs an uplink interruption. For example, when one or two transmitters of the terminal perform a switch between two bands, the terminal does not transmit an uplink signal on these uplink bands during the switching period.

[0087] In other embodiments of the present disclosure, the switching period of the transmitter switch between any two of at least three bands configured for the terminal is greater than or equal to the switching period of the transmitter switch between two bands configured for the terminal.

[0088] In some embodiments, the switching period of the transmitter switch between any two bands is the same or different.

[0089] In some embodiments, the switching period of the transmitter between any two of at least three bands configured for the terminal is the same, and each of the switching times is the maximum value among a plurality of switching periods of any two bands for performing the transmitter switching between the two bands.

[0090] In the above embodiment, by determining the transmitter switching period, during the transmitter switching period, the base station does not schedule uplink transmission, and the terminal performs uplink interruption. For example, when one or two transmitters of the terminal perform switching between two bands, the transmission unit 210 does not transmit an uplink signal in these two bands during the switching period.

[0091] In some embodiments, when the first transmitter of the terminal performs switching between two bands and the second transmitter is in the third band without performing switching, the transmission unit 210 transmits an uplink signal in the third uplink band during the switching period of the other two bands, or does not transmit.

[0092] FIG. 3 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. The terminal 300 includes a memory 310 and a processor 320. Here, the memory 310 can be a magnetic disk, a flash memory, or any other non-volatile storage medium. The memory is used to store the instructions of the corresponding embodiments described above. The processor 320 is coupled to the memory 310 and can be implemented as one or more integrated circuits such as a microprocessor or a microcontroller. The processor 320 is configured to execute the instructions stored in the memory.

[0093] In some embodiments, the processor 320 is coupled to the memory 310 via the bus 330. The terminal 300 can be further connected to an external storage device 350 through a storage interface 340 to access external data, and can be further connected to a network or another computer system (not shown) through a network interface 360. Details thereof are not described herein.

[0094] In the above embodiments, by storing data instructions in the memory and processing the above instructions using a processor, it is possible to improve the utilization of spectrum resources.

[0095] In other embodiments, there is provided a computer-readable storage medium storing computer program instructions for performing the steps of the methods of the above embodiments when executed by a processor. Those skilled in the art should understand that the embodiments of the present disclosure can be provided as a method, an apparatus, or a computer program product. Therefore, the embodiments of the present disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment including both hardware elements and software elements. Moreover, the present disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including but not limited to disk storage, CD-ROM, optical memory, etc.) having computer-usable program code embodied therein.

[0096] This disclosure is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to create a machine, whereby the instructions, when executed by the processor of the computer or other programmable data processing device, create means for implementing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0097] These computer program instructions can also be stored in a computer-readable storage device capable of instructing a computer or other programmable data processing device to operate in a specific manner, whereby the instructions stored in the computer-readable storage device create a product that includes instruction means for implementing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0098] These computer program instructions can also be loaded onto a computer or other programmable device to execute a series of operation steps on that computer or other programmable device to create a computer-implemented process, whereby the instructions executed on that computer or other programmable device provide steps for implementing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0099] According to some embodiments of the present disclosure, there is further provided a computer program including instructions that cause a processor to execute the uplink signal transmission method described above when executed by the processor.

[0100] So far, the present disclosure has been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art should be able to understand how to implement the technical solutions disclosed herein.

[0101] Although some specific embodiments of the present disclosure have been described in detail by way of example, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the following claims.

Claims

1. An uplink signal transmission method in which a terminal is configured with at least three bands, comprising: Transmitting an uplink signal in one or two of the at least three bands configured for the terminal.

2. Transmitting the uplink signal in one or two of the at least three bands configured for the terminal means: Transmitting the uplink signal in any one of the at least three bands configured for the terminal, or transmitting the uplink signal simultaneously in a first band and a second band among the at least three bands configured for the terminal. The uplink signal transmission method according to claim 1.

3. The uplink signal transmission method according to claim 2, wherein the first band and the second band are any two bands among the at least three bands, or some two bands among the at least three bands configured for the terminal.

4. The terminal has a single-layer data transmission ability in uplink or a two-layer data transmission ability in uplink in each of the at least three bands configured for the terminal, and has the two-layer data transmission ability in uplink in at least one of the at least three bands configured for the terminal. The uplink signal transmission method according to claim 1.

5. The uplink signal transmission method according to claim 1, further comprising performing a transmitter switch across bands when the terminal transmits uplink signals in different bands at different times.

6. The uplink signal transmission method according to claim 1, further comprising performing a transmitter switch across bands when the number of transmitters in at least one uplink band of the terminal is different at different times.

7. When the transmitter switching across bands is performed between a first band and a second band among the at least three bands configured for the terminal, the terminal supports at least one of a first condition and a second condition, The first condition includes that the terminal supports switching between the first band and the second band based on carrier aggregation, The second condition includes that the terminal supports switching between the first band and the second band based on supplementary uplink. The uplink signal transmission method according to claim 1.

8. When the terminal simultaneously transmits the uplink signal in a first band and a second band among the at least three bands configured for the terminal and performs transmitter switching across bands, the terminal supports a third condition, The third condition includes that the terminal supports switching between the first band and the second band based on carrier aggregation and satisfies the radio frequency requirements of uplink carrier aggregation in the first band and the second band. The uplink signal transmission method according to claim 1.

9. The terminal does not need to satisfy the radio frequency requirements for uplink simultaneous transmission in the at least three bands configured for the terminal. The uplink signal transmission method according to claim 1.

10. The switching period of the transmitter switching between the first band and the second band when the at least three bands are configured for the terminal is the same as the switching period of the transmitter switching between the first band and the second band when two bands are configured for the terminal. The uplink signal transmission method according to any one of claims 1 to 9.

11. The uplink signal transmission method according to claim 10, wherein a switching period for transmitter switching between any two of the at least three bands configured for the terminal is the same or different. **Claim 12** When the terminal has a two-layer data transmission capability in uplink in the first band and the second band, the same switching period for performing uplink dual transmitter-dual transmitter switching between the first band and the second band when two bands are configured for the terminal is reused as the switching period for performing transmitter switching between the first band and the second band. The uplink signal transmission method according to claim 10. **Claim 13** When the terminal has a single-layer data transmission capability in uplink in the first band and a two-layer data transmission capability in uplink in the second band, the same switching period for performing uplink single transmitter-dual transmitter switching between the first band and the second band when two bands are configured for the terminal is reused as the switching period for performing transmitter switching between the first band and the second band. The uplink signal transmission method according to claim 10. **Claim 14** When the terminal has a single-layer data transmission capability in uplink in both the first band and the second band, the same switching period for performing uplink single transmitter-single transmitter switching between the first band and the second band when two bands are configured for the terminal is reused as the switching period for performing transmitter switching between the first band and the second band. The uplink signal transmission method according to claim 10. **Claim 15** The switching period of the transmitter between any two of the at least three bands configured for the terminal is equal to or longer than the switching period of the transmitter between two bands configured for the terminal, the uplink signal transmission method according to any one of claims 1 to 9.

16. The switching period of the transmitter between any two of the at least three bands configured for the terminal is the same or different, the uplink signal transmission method according to claim 15.

17. The switching period of the transmitter between any two of the at least three bands configured for the terminal is the same, and each of the switching periods is the maximum value among a plurality of the switching periods of any two bands for performing the transmitter switching between two bands, the uplink signal transmission method according to claim 15.

18. Uplink transmission is not required during the switching period of the transmitter, the uplink signal transmission method according to any one of claims 1 to 9.

19. The first transmitter of the terminal performs switching between a first band and a second band among the at least three bands configured for the terminal, and when the second transmitter is in a third band among the at least three bands configured for the terminal without performing switching, the terminal can transmit an uplink signal in the third band during the switching period of the switching between the first band and the second band, the uplink signal transmission method according to any one of claims 1 to 9.

20. The uplink signal transmission method according to any one of claims 1 to 9, wherein a first transmitter of the terminal executes switching between a first band and a second band among the at least three bands configured for the terminal, and when a second transmitter is in a third band among the at least three bands configured for the terminal without performing switching, the terminal does not transmit an uplink signal in the third band during a switching period of the switching between the first band and the second band.

21. A terminal configured with at least three bands, comprising a signal transmission unit configured to transmit an uplink signal in one or two of the at least three bands configured for the terminal.

22. A memory, a processor coupled to the memory, and comprising a terminal, wherein the processor is configured to execute the uplink signal transmission method according to any one of claims 1 to 20 based on instructions stored in the memory.

23. A non-transitory computer-readable storage medium storing computer program instructions that, when executed by a processor, implement the uplink signal transmission method according to any one of claims 1 to 20.

24. A computer program comprising instructions that, when executed by a processor, cause the processor to execute the uplink signal transmission method according to any one of claims 1 to 20.

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