Uplink transmission method, apparatus, and storage medium

Abstract

The present disclosure provides an uplink transmission method, apparatus, and storage medium. The uplink transmission method includes a step of determining whether a switching time duration is required between two adjacent uplink transmissions of the terminal when the terminal supports uplink transmission switching in a plurality of frequency bands, where the total number of the plurality of frequency bands is greater than 2. The present disclosure supports the terminal to perform uplink transmission switching in a plurality of frequency bands. When the total number of the plurality of frequency bands is greater than 2, the terminal and the base station can determine whether a switching time duration is required between two adjacent uplink transmissions of the terminal based on the same principle, ensuring that the understanding of the terminal and the base station is consistent, improving the flexibility of network deployment and scheduling, realizing the expansion of uplink transmission switching in the NR system, and having high availability.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and particularly to an uplink transmission method, apparatus, and storage medium.

Background Art

[0002] Currently, when a terminal performs uplink transmission, it supports a maximum of two transmissions (Transmit, TX). In the Release-18 (Rel-18) multicarrier enhancement project, it is determined to extend uplink (UL) TX switching. Specifically, the terminal supports performing UL TX switching among three or four frequency bands.

[0003] When the terminal performs UL Tx switching in multiple frequency bands, there is a problem that the base station cannot determine whether the Tx chain on the terminal side needs to perform switching, and the understanding between the base station side and the terminal side becomes inconsistent.

Summary of the Invention

Problems to be Solved by the Invention

[0004] To overcome the problems existing in the related art, embodiments of the present disclosure provide an uplink transmission method, apparatus, and storage medium.

Means for Solving the Problems

[0005] According to a first aspect of embodiments of the present disclosure, an uplink transmission method applied to a terminal is provided, and the method includes: When the terminal supports performing uplink transmission switching in multiple frequency bands, determining whether a switching time duration is required between two adjacent uplink transmissions of the terminal, where the total number of the multiple frequency bands is greater than 2.

[0006] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is: A step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between a reference frequency band pair and an uplink transmission chain, the step of including one or two of the plurality of frequency bands in the reference frequency band pair.

[0007] Selectively, the method is, The steps include determining the aforementioned reference frequency band pair, The steps include determining the relationship based on the aforementioned reference frequency band pair, The further step includes reporting the aforementioned relationship to the base station.

[0008] Selectively, the above method is A step of receiving instruction information transmitted by a base station, wherein the instruction information is used to indicate the reference frequency band pair, The step further includes determining the association relationship based on the reference frequency band pair indicated by the instruction information.

[0009] Selectively, the step of receiving instruction information transmitted by the base station is: The steps of receiving the instruction information transmitted by the base station via radio resource control (RRC) signaling, The step includes receiving the instruction information transmitted by the base station via media access control element (MAC CE) signaling.

[0010] Selectively, the step of determining the aforementioned relationship is, When performing uplink transmission using a first frequency band included in a first reference frequency band pair, the step of determining the association relationship based on the first reference frequency band pair includes the step that the first reference frequency band pair is any one of the reference frequency band pairs.

[0011] Selectively, the step of determining the association relationship based on the first reference frequency band pair is: The steps include determining that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band, The steps include determining that another uplink transmission chain corresponding to the first reference frequency band pair operates in a second frequency band included in the first reference frequency band pair.

[0012] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, The method includes the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the frequency bands in which the two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair.

[0013] Selectively, if the frequency bands in which two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal is: If the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to the reference frequency band pair, then it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal, or The method includes the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands belong to the same reference frequency band pair.

[0014] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, If the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands do not belong to the same reference frequency band pair, the step of determining that the switching time length is required between the two adjacent uplink transmissions of the terminal, or The method includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the frequency bands in which two adjacent uplink transmissions of the terminal are located are the same, the same frequency band belongs to the reference frequency band pair of any group, and the correspondence between the same frequency band and the uplink transmission chain changes.

[0015] Selectively, the above method is The step further includes determining that the correspondence has changed if the number of uplink transmission chains corresponding to the same frequency band changes.

[0016] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, If the reference frequency band pairs are in multiple groups, the method includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the reference frequency band pairs corresponding to two adjacent uplink transmissions of the terminal change.

[0017] Optionally, the method further includes: determining that the terminal is not expected to perform uplink transmission simultaneously in two or more of the plurality of frequency bands.

[0018] Optionally, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal includes: when the frequency bands of two adjacent uplink transmissions of the terminal are different, determining that the switching time length is required between two adjacent uplink transmissions of the terminal; or when the frequency bands of two adjacent uplink transmissions of the terminal are the same and the number of ports used for two adjacent uplink transmissions is different, determining that the switching time length is required between two adjacent uplink transmissions of the terminal.

[0019] Optionally, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal includes: when the frequency bands of two adjacent uplink transmissions of the terminal are the same, determining that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0020] Optionally, the number of ports used for two adjacent uplink transmissions of the terminal is the same or different.

[0021] According to a second aspect of an embodiment of the present disclosure, there is provided an uplink transmission method applied to a base station, the method including: when it is determined to support the terminal to perform uplink transmission switching in a plurality of frequency bands, determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, where the total number of the plurality of frequency bands is greater than two.

[0022] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is: A step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between a reference frequency band pair and an uplink transmission chain, the step of including one or two of the plurality of frequency bands in the reference frequency band pair.

[0023] Selectively, the above method is The step further includes receiving the relationship reported by the terminal.

[0024] Selectively, the above method is A step of transmitting instruction information to the terminal, wherein the instruction information is used to indicate the reference frequency band pair, The step further includes determining the association relationship based on the reference frequency band pair indicated by the instruction information.

[0025] Selectively, the step of sending instruction information to the terminal is: The steps of transmitting the instruction information to the terminal via radio resource control (RRC) signaling, The procedure includes transmitting the instruction information to the terminal via media access control element (MAC CE) signaling.

[0026] Selectively, the step of determining the aforementioned relationship is, When the terminal performs uplink transmission using a first frequency band included in a first reference frequency band pair, the steps include determining the association relationship based on the first reference frequency band pair, wherein the first reference frequency band pair is any one of the reference frequency band pairs.

[0027] Selectively, the step of determining the association relationship based on the first reference frequency band pair is: The steps include determining that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band, The steps include determining that another uplink transmission chain corresponding to the first reference frequency band pair operates in a second frequency band included in the first reference frequency band pair.

[0028] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, The method includes the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the frequency bands in which the two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair.

[0029] Selectively, if the frequency bands in which two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal is: If the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to any group of reference frequency band pairs, then it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal, or The method includes the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands belong to the same reference frequency band pair.

[0030] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, If the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands do not belong to the same reference frequency band pair, the step of determining that the switching time length is required between the two adjacent uplink transmissions of the terminal, or The method includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the frequency bands in which two adjacent uplink transmissions of the terminal are located are the same, the same frequency band belongs to the reference frequency band pair of any group, and the correspondence between the same frequency band and the uplink transmission chain changes.

[0031] Selectively, the above method is The step further includes determining that the correspondence has changed if the number of uplink transmission chains corresponding to the same frequency band changes.

[0032] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, If the reference frequency band pairs are in multiple groups, the method includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the reference frequency band pairs corresponding to two adjacent uplink transmissions of the terminal change.

[0033] Selectively, the above method is The method further includes determining that the time-domain resources occupied by any two of the aforementioned multiple frequency bands do not overlap.

[0034] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is: If the frequency bandwidths of two adjacent uplink transmissions of the terminal are different, the step of determining whether the switching time length is required between the two adjacent uplink transmissions of the terminal, or The method includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the frequency bandwidths of the two adjacent uplink transmissions of the terminal are the same, but the number of ports used for the two adjacent uplink transmissions are different.

[0035] Selectively, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is: The method includes the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the frequency bandwidths of the two adjacent uplink transmissions of the terminal are the same.

[0036] Selectively, the number of ports used for two adjacent uplink transmissions of the terminal may be the same or different.

[0037] According to a third embodiment of the embodiments of this disclosure, an uplink transmission device applied to a terminal is provided, the device is If the terminal supports uplink transmission switching in multiple frequency bands, a first determination module is configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal, and the first determination module includes a first determination module in which the total number of the multiple frequency bands is greater than 2.

[0038] According to a fourth aspect of the embodiments of the present disclosure, an uplink transmission device applied to a base station is provided, the device is If it is determined that a terminal supports uplink transmission switching across multiple frequency bands, a second decision module is configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal, the second decision module having a total number of frequency bands greater than 2.

[0039] According to a fifth embodiment of the embodiments of this disclosure, a computer-readable storage medium is provided in which a computer program is stored, and the computer program executes the uplink transmission method described in any of the terminal-sides described above.

[0040] According to a sixth embodiment of the embodiments of this disclosure, a computer-readable storage medium is provided in which a computer program is stored, the computer program executes the uplink transmission method described in any of the above base station side descriptions.

[0041] According to a seventh embodiment of the embodiments of this disclosure, an uplink transmission device is provided. Processor and Includes memory for storing instructions that can be executed by the processor, The processor is configured to perform the uplink transmission method described in any of the terminal-side options above.

[0042] According to an eighth aspect of the embodiments of this disclosure, an uplink transmission device is provided. Processor and Includes memory for storing instructions that can be executed by the processor, The processor is configured to perform the uplink transmission method described in any of the above base stations.

[0043] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0044] In the embodiments of this disclosure, a terminal supports uplink transmission switching across multiple frequency bands, and when the total number of frequency bands is greater than two, the terminal and the base station can determine, based on the same principle, whether a switching time length is required between two adjacent uplink transmissions of the terminal, ensuring that the terminal and the base station have a shared understanding, improving flexibility in network placement and scheduling, enabling the expansion of uplink transmission switching in NR systems, and ensuring high availability.

[0045] The general explanations above and the detailed explanations below are illustrative and interpretive and do not limit this disclosure. [Brief explanation of the drawing]

[0046] The drawings herein are incorporated into the specification and constitute part of this specification, illustrating embodiments conforming to this disclosure and are used together with the specification to illustrate the principles of the present invention. [Figure 1] This is a schematic diagram of a transmission chain as shown in one exemplary embodiment. [Figure 2A] This is a schematic diagram illustrating a scenario in which uplink transmission switching is performed in an EN-DC scenario as shown in one exemplary embodiment. [Figure 2B] This is a schematic diagram illustrating a scenario in which uplink transmission switching is performed in an Inter-band CA scenario as shown in an exemplary embodiment. [Figure 2C] This is a schematic diagram illustrating a scenario in which uplink transmission switching is performed in a SUL scenario as shown in one exemplary embodiment. [Figure 3] This is a schematic flowchart of an uplink transmission method as shown in one exemplary embodiment. [Figure 4] This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 5] This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 6]This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 7] This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 8] This is a schematic flowchart of an uplink transmission method as shown in one exemplary embodiment. [Figure 9] This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 10] This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 11] This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 12] This is a schematic flowchart of another uplink transmission method, as illustrated by one exemplary embodiment. [Figure 13] This is a block diagram of an uplink transmission device as shown in an exemplary embodiment. [Figure 14] This is a block diagram of another uplink transmission device as shown by an exemplary embodiment. [Figure 15] This is a schematic diagram of an uplink transmission device as shown in one exemplary embodiment of the present disclosure. [Figure 16] This is a schematic diagram of another uplink transmission device as shown in one exemplary embodiment of the present disclosure. [Modes for carrying out the invention]

[0047] Hereinafter, exemplary embodiments are described in detail and illustrated in the drawings. Where the following description relates to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present invention, which are described in detail in the appended claims.

[0048] The terms used in this disclosure are for illustrative purposes only and are not intended to limit the disclosure. The singular forms “one kind,” “the said,” and “the said” used in this disclosure and the appended claims are also intended to include the plural form unless the context clearly indicates otherwise. The terms “and / or” as used herein refer to any combination or all possible combinations of at least one related enumeration.

[0049] This disclosure may use terms such as First, Second, Third, etc., to describe various types of information, but it should be understood that this information should not be limited to these terms. These terms are simply used to distinguish the same type of information. For example, as long as it does not deviate from the scope of this disclosure, First Information may be called Second Information, and similarly, Second Information may be called First Information. Depending on the context, the word “if” as used herein may be interpreted as “when…” or “in the case of…” or “in response to a decision.”

[0050] UL Tx refers to a radio frequency transmission chain (transmit chain, Tx chain). For a single terminal, two Tx chains can be used for uplink transmission on the same band, or each can be used for uplink transmission on two different bands. For one possible hardware implementation of a Tx chain, for example, as shown in Figure 1, each analog-to-digital converter (ADC) can correspond to one Tx chain.

[0051] For one or two Tx chains associated with a specific frequency band, actual uplink transmission does not necessarily occur; it is determined by the actual scheduling or configuration. While a terminal may transmit uplink data according to a single port on one band, the base station cannot determine whether the terminal has performed Tx switching. For example, a terminal may support UL Tx switching between four bands, and the correspondence between Tx chains and bands can be shown, for example, in Table 1. Table 1 [Table 1]

[0052] In this example, the base station cannot distinguish whether the terminal's Tx chain belongs to Case 1 or Case 2, leading to a mismatch in understanding between the base station and the terminal.

[0053] In versions 16 (Release-16) and 17, terminals only support UL Tx switching between two bands and support three scenarios: advanced general-purpose terrestrial base radio access and new radio dual connectivity (E-UTRA-NR Dual Connectivity, EN-DC), inter-band carrier aggregation (CA), and supplementary uplink (SUL). As shown in Figures 2A to 2C, 2 Tx transmission is not supported in the EN-DC scenario.

[0054] Furthermore, it supports two different UL Tx switching schemes, namely: Switched uplinks (SwitchedUL) do not support the terminal simultaneously transmitting on two bands, and This is a dual uplink (DualUL) device that supports simultaneous uplink transmission on two bands.

[0055] The two transmission modes described above are configured by Radio Resource Control (RRC) signaling.

[0056] The current protocol only supports UL Tx switching on two bands. The Rel-18 multicarrier enhancement project has made it clear that research into UL Tx switching on more than two bands is needed.

[0057] Taking the example of a terminal switching two UL Tx across four bands, there are 10 different Tx chain relationships shown in Table 2, and a relationship between each of the frequency band pairs (which can include one or two of the four bands), with multiple different actual transmission conditions for each type of relationship. Table 2 [Table 2-1] [Table 2-2]

[0058] For example, in case 1-1, 1p+0p+0p+0p represents the terminal transmitting using a single port on band #1 only, 0p+1p+0p+0p represents the terminal transmitting using a single port on band #2 only, and 1p+1p+0p+0p represents the terminal transmitting simultaneously on band #1 and band #2, each using a single port.

[0059] However, for the specific uplink transmission scenarios described above, there may be a problem where the base station and the terminal do not agree on the correspondence between the corresponding Tx chain and band. Table 2 below shows cases where this misunderstanding is likely to occur. Case 1-1 (1p+0p+0p+0p) is understood by the base station as Case 1-2 (1p+0p+0p+0p). Case 1-1 (1p+0p+0p+0p) is understood by the base station as Case 1-3 (1p+0p+0p+0p). Case 1-1 (0p+1p+0p+0p) is understood by the base station as Case 1-4 (0p+1p+0p+0p). Case 1-1 (0p+1p+0p+0p) is understood by the base station as Case 1-5 (0p+1p+0p+0p). Case 1-2 (1p+0p+0p+0p) is understood by the base station as Case 1-3 (1p+0p+0p+0p). Case 1-2 (0p+0p+1p+0p) is understood by the base station as Case 1-4 (0p+0p+1p+0p). Case 1-3 (0p+0p+0p+1p) is understood by the base station as Case 1-5 (0p+0p+0p+1p). Case 1-1 (1p+0p+0p+0p) is understood by the base station as Case 2-1 (1p+0p+0p+0p). Case 1-1 (0p+1p+0p+0p) is understood by the base station as Case 2-2 (0p+1p+0p+0p). Case 1-2 (1p+0p+0p+0p) is understood by the base station as Case 2-1 (1p+0p+0p+0p). Case 1-2 (0p+0p+1p+0p) is understood by the base station as Case 2-3 (0p+0p+1p+0p). Case 1-3 (1p+0p+0p+0p) is understood by the base station as Case 2-1 (1p+0p+0p+0p). Cases 1-3 (0p+0p+0p+1p) are understood by the base station as Cases 2-4 (0p+0p+0p+1p). Case 1-4 (0p+1p+0p+0p) is understood by the base station as Case 2-2 (0p+1p+0p+0p). Cases 1-4 (0p+0p+1p+0p) are understood by the base station as Cases 2-3 (0p+0p+1p+0p). Case 1-5 (0p+1p+0p+0p) is understood by the base station as Case 2-2 (0p+1p+0p+0p). Case 1-5 (0p+0p+0p+1p) is understood by the base station as Case 2-2 (0p+0p+0p+1p).

[0060] As can be seen from the above, when a terminal performs UL Tx switching on more than two bands, the base station cannot determine whether the terminal's Tx chain needs to switch, and therefore cannot determine whether a switching time (e.g., switching period) is required between two adjacent uplink transmissions of the terminal. This leads to a mismatch in understanding between the terminal and the base station.

[0061] In this application, two adjacent transmissions can refer to the transmission that is currently to be transmitted and the preceding adjacent transmission. Different transmissions are not limited to being adjacent in the time domain, but can also correspond to different resource schedulings.

[0062] To address the technical challenges described above, this disclosure provides the following uplink transmission method. The uplink transmission method provided by this disclosure from the terminal side will be described below.

[0063] Embodiments of this disclosure provide an uplink transmission method, and as shown in Figure 3, Figure 3 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a terminal, and this method may include the following steps 301.

[0064] In step 301, if the terminal supports uplink transmission switching in multiple frequency bands, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal, and the total number of the multiple frequency bands is greater than 2.

[0065] In embodiments of the present disclosure, the multiple frequency bands are frequency bands that support the terminal performing uplink transmission switching, and the total number of the multiple frequency bands may be a positive integer greater than 2, for example, 3, 4, 5..., and is not limited thereto. The terminal can determine whether a switching time length is required between two adjacent uplink transmissions of the terminal based on instructions transmitted by the base station or in accordance with the protocol agreement.

[0066] In the above embodiment, the terminal supports uplink transmission switching across multiple frequency bands. When the total number of frequency bands is greater than two, the terminal and base station can determine, based on the same principle, whether a switching time is required between two adjacent uplink transmissions of the terminal. This ensures that the terminal and base station have a shared understanding, improves network placement and scheduling flexibility, enables the expansion of uplink transmission switching in the NR system, and provides high availability.

[0067] In some selective embodiments, as shown in Figure 4, Figure 4 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a terminal, and this method may include the following steps.

[0068] In step 401, based on the relationship between the reference frequency band pair and the uplink transmission chain, it is determined whether a switching time length is required between two adjacent uplink transmissions of the terminal, and the reference frequency band pair includes one or two of the plurality of frequency bands.

[0069] In embodiments of this disclosure, the multiple frequency bands are frequency bands that support the terminal performing uplink transmission switching, and the total number of the multiple frequency bands may be a positive integer greater than 2, for example, 3, 4, 5..., but is not limited thereto.

[0070] In the embodiments of this disclosure, a reference frequency band pair (band pair) may be one group or more groups, and this disclosure is not limited thereto. Each reference frequency band pair may include one or two of the above-mentioned frequency bands. If the number of frequency bands that a terminal supports for uplink transmission switching is determined, the possible configuration cases of the reference frequency band pair can also be determined accordingly. Assuming that the total number of frequency bands is N, there are M possible configuration cases of the reference frequency band pair. JPEG0007849505000004.jpg314 That is the case.

[0071] For example, when N is 4, the possible configuration of the reference frequency band pair is M=10, meaning the possible configuration cases are the same as those shown in Table 2.

[0072] The inclusion of one of multiple frequency bands in a reference frequency band pair corresponds to one of cases 2-1 to 2-4 in Table 2, and the inclusion of two of multiple frequency bands in a reference frequency band pair can correspond to one of cases 1-1 to 1-6 in Table 2.

[0073] For example, it can be determined that the reference frequency band pair consists of one or two frequency bands from the first to fourth frequency bands.

[0074] In embodiments of this disclosure, the terminal can determine whether a switching time length is required based on instructions from the base station or the method of the protocol agreement.

[0075] In the above embodiment, the terminal supports uplink transmission switching across multiple frequency bands. When the total number of frequency bands is greater than two, it is possible to determine whether a switching time is required between two adjacent uplink transmissions of the terminal based on the relationship between the reference frequency band pair and the uplink transmission chain. This ensures that the terminal and base station have a shared understanding, improves flexibility in network placement and scheduling, enables the expansion of uplink transmission switching in the NR system, and provides high availability.

[0076] In some selective embodiments, the above-mentioned relationships can be reported to the base station after they have been determined by the terminal.

[0077] As shown in Figure 5, Figure 5 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a terminal, and this method may include the following steps 501 to 504.

[0078] In step 501, the reference frequency band pair is determined.

[0079] In embodiments of the Disclosure, a terminal can determine a reference frequency band pair on its own, depending on its circumstances. The reference frequency band pair may include, but is not limited to, one or two of the multiple frequency bands described above. The multiple frequency bands are frequency bands that the terminal supports in performing uplink transmission switching, and the total number of the multiple frequency bands may be a positive integer greater than 2, for example, 3, 4, 5... The terminal may determine whether a switching time length is required based on instructions from the base station or the method of the protocol agreement.

[0080] For example, if the total number of frequency bands is 4, the terminal can determine one or more reference frequency band pairs from Table 2, and this disclosure is not limited thereto.

[0081] In step 502, the relationship is determined based on the reference frequency band pair.

[0082] In the embodiments of this disclosure, the terminals can determine the relationships in the following manner.

[0083] When performing uplink transmission using a first frequency band included in a first reference frequency band pair, the relationship is determined based on the first reference frequency band pair, and the first reference frequency band pair is one of the reference frequency band pairs.

[0084] In other words, if the actual uplink transmission of the terminal takes place in the first frequency band of the first reference frequency band pair, the above relationship can be determined by this first reference frequency band pair.

[0085] In one possible implementation, the terminal can determine that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band, and that another uplink transmission chain corresponding to the first reference frequency band pair operates in a second frequency band included in the first reference frequency band pair.

[0086] For example, if the actual uplink transmission takes place in band #1 of the reference frequency band pair {band #1, band #2}, then one uplink transmission chain corresponding to the reference frequency band pair {band #1, band #2} operates in band #1, and another uplink transmission chain corresponding to the reference frequency band pair {band #1, band #2} operates in band #2.

[0087] In step 503, the relationship between the reference frequency band pair and the uplink transmission chain is reported to the base station.

[0088] In step 504, based on the relationship described above, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal.

[0089] In one possible implementation, if the frequency bands in which two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, it is determined that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0090] Specifically, if the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to any group of reference frequency band pairs, it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0091] For example, assuming that two adjacent uplink transmissions of a terminal are located in the same frequency band, both being band#1, and that band#1 belongs to a previously determined group of reference frequency band pairs, specifically the reference frequency band pair {band#1, band#2}, then it is determined that the aforementioned switching time length is not required between two adjacent uplink transmissions of the terminal.

[0092] Specifically, if the two adjacent uplink transmissions of the terminal are located in different frequency bands, and these two different frequency bands belong to the same reference frequency band pair, it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0093] For example, if two adjacent uplink transmissions of a terminal are located in different frequency bands, namely band#1 and band#2, and band#1 and band#2 belong to the same previously determined reference frequency band pair {band#1, band#2}, then it is determined that the aforementioned switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0094] In another possible implementation, if the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands do not belong to the same reference frequency band pair, it is determined that the switching time length is required between the two adjacent uplink transmissions of the terminal.

[0095] For example, if two adjacent uplink transmissions of a terminal are located in different frequency bands, band#1 and band#3, and the previously determined reference frequency band pair is {band#1, band#2}, then it is determined that the aforementioned switching time length is required between the two adjacent uplink transmissions of the terminal.

[0096] In another possible implementation, if the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to the reference frequency band pair of any group, and the correspondence between the same frequency band and the uplink transmission chain changes, then it is determined that the switching time length is required between the two adjacent uplink transmissions of the terminal.

[0097] The terminal determines that the correspondence has changed if the number of uplink transmission chains corresponding to the same frequency band changes. Specifically, the terminal considers that the number of uplink transmission chains corresponding to this frequency band has changed whether it changes from one to two or from two to one. Furthermore, the terminal can determine that the switching time length is required between two adjacent uplink transmissions.

[0098] For example, suppose two adjacent uplink transmissions of a terminal are located in the same frequency band, both being band#1, and band#1 belongs to a previously determined group of reference frequency band pairs, specifically the reference frequency band pair {band#1, band#2}, but the number of uplink transmission chains corresponding to band#1 changes from one to two, then the terminal determines that the aforementioned switching time length is required between the two adjacent uplink transmissions.

[0099] In another possible implementation, if the reference frequency band pairs are in multiple groups, it is determined that the switching time length is required between two adjacent uplink transmissions of the terminal if the reference frequency band pairs corresponding to two adjacent uplink transmissions of the terminal change.

[0100] For example, if a terminal has two reference frequency band pairs, {band#1, band#2} and {band#3, band#4}, and the terminal's previous uplink transmission corresponds to {band#1, band#2} and the uplink transmission to be performed corresponds to {band#3, band#4}, then it is determined that the aforementioned switching time length is required between the two adjacent uplink transmissions.

[0101] In the above embodiment, the terminal can report to the base station after determining the relationship, so that both the terminal and the base station can determine whether a switching time is required between two adjacent uplink transmissions of the terminal based on this relationship. This ensures that the terminal and the base station have a shared understanding, improves the flexibility of network placement and scheduling, enables the expansion of uplink transmission switching in the NR system, and provides high availability.

[0102] In some selective embodiments, the base station may transmit instructional information to a terminal, which is used to indicate a reference frequency band pair, and the terminal determines the association based on the reference frequency band pair.

[0103] As shown in Figure 6, Figure 6 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a terminal, and this method may include the following steps 601 to 603.

[0104] In step 601, instruction information transmitted by the base station is received, and the instruction information is used to indicate the reference frequency band pair.

[0105] In embodiments of the Disclosure, a base station may transmit instructional information to a terminal to inform it of a reference frequency band pair. Any group of reference frequency band pairs may include, but are not limited to, one or two of the multiple frequency bands described above. The multiple frequency bands are frequency bands that the terminal supports in performing uplink transmission switching, and the total number of the multiple frequency bands may be a positive integer greater than 2, for example, 3, 4, 5... The terminal may determine whether a switching time length is required based on instructions from the base station or the method of the protocol agreement.

[0106] In one possible implementation, a terminal can receive this instructional information transmitted by a base station via RRC signaling.

[0107] In another possible implementation, the terminal can receive this instruction information transmitted by the base station via Media Access Control Element (MAC CE) signaling.

[0108] In step 602, the relationship is determined based on the reference frequency band pair.

[0109] In the embodiments of this disclosure, the terminals can determine the relationships in the following manner.

[0110] When performing uplink transmission using a first frequency band included in a first reference frequency band pair, the relationship is determined based on the first reference frequency band pair, and the first reference frequency band pair is one of the reference frequency band pairs.

[0111] In other words, if the actual uplink transmission of the terminal takes place in the first frequency band of the first reference frequency band pair, the above relationship can be determined by this first reference frequency band pair.

[0112] In one possible implementation, the terminal may also determine that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band, and that another uplink transmission chain corresponding to the first reference frequency band pair operates in a second frequency band included in the first reference frequency band pair.

[0113] In step 603, based on the relationship described above, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal.

[0114] In one possible implementation, if the frequency bands in which two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, it is determined that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0115] Specifically, if the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to any group of reference frequency band pairs, it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0116] Specifically, if the two adjacent uplink transmissions of the terminal are located in different frequency bands, and these two different frequency bands belong to the same reference frequency band pair, it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0117] In another possible implementation, if the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands do not belong to the same reference frequency band pair, it is determined that the switching time length is required between the two adjacent uplink transmissions of the terminal.

[0118] In another possible implementation, if the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to the reference frequency band pair of any group, and the correspondence between the same frequency band and the uplink transmission chain changes, then it is determined that the switching time length is required between the two adjacent uplink transmissions of the terminal.

[0119] The terminal determines that the correspondence has changed if the number of uplink transmission chains corresponding to the same frequency band changes. Specifically, if the number of uplink transmission chains corresponding to this same frequency band changes from one to two, or from two to one, the terminal considers that the number of uplink transmission chains corresponding to this frequency band has changed. Furthermore, the terminal can determine that the switching time length is required between two adjacent uplink transmissions.

[0120] In another possible implementation, if the reference frequency band pairs are in multiple groups, it is determined that the switching time length is required between two adjacent uplink transmissions of the terminal if the reference frequency band pairs corresponding to two adjacent uplink transmissions of the terminal change.

[0121] In the above embodiment, the base station transmits instruction information to the terminal, and the terminal determines a reference frequency band pair based on this instruction information, then determines the relationship between them, and based on this relationship, it can determine whether a switching time is required between two adjacent uplink transmissions of the terminal. The base station can determine whether a switching time is required in the same manner, ensuring that the understanding of the terminal and the base station is consistent, improving the flexibility of network placement and scheduling, enabling the expansion of uplink transmission switching in the NR system, and ensuring high availability.

[0122] In some selective embodiments, a terminal can determine, based on the content of a protocol agreement, whether a switching time length is required between two adjacent uplink transmissions of the terminal.

[0123] As shown in Figure 7, Figure 7 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a terminal, and this method may include the following steps 701-702.

[0124] In step 701, if the terminal supports uplink transmission switching in multiple frequency bands, it is determined that the terminal is not expected to perform uplink transmission simultaneously in two or more of the multiple frequency bands.

[0125] In embodiments of this disclosure, the multiple frequency bands are frequency bands that support the terminal performing uplink transmission switching, and the total number of the multiple frequency bands may be a positive integer greater than 2, for example, 3, 4, 5..., but is not limited thereto.

[0126] In embodiments of this disclosure, a terminal can determine, based on a protocol agreement, that it does not expect to perform uplink transmission simultaneously on two or more frequency bands among the plurality of frequency bands.

[0127] In step 702, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal.

[0128] In one possible implementation, if the frequency bandwidths of two adjacent uplink transmissions of the terminal are different, it is determined that the switching time length is required between the two adjacent uplink transmissions of the terminal.

[0129] In other words, if the frequency band in which the uplink transmission that the terminal intends to transmit is located is different from the frequency band in which the previous uplink transmission was located, the aforementioned switching time length is required between two adjacent uplink transmissions.

[0130] Of course, the frequency bands in which two adjacent uplink transmissions are located each belong to multiple frequency bands.

[0131] For example, the frequency band in which the previous uplink transmission occurred is band #1, and the uplink transmission to be transmitted is band #2, both belonging to multiple frequency bands that support uplink transmission switching by the terminal. It is determined that the aforementioned switching time length is required between two adjacent uplink transmissions.

[0132] In another possible implementation, if the frequency bandwidths of two adjacent uplink transmissions of the terminal are the same, and the number of ports used for the two adjacent uplink transmissions are different, it is determined that the switching time length is required between the two adjacent uplink transmissions of the terminal.

[0133] In other words, if the frequency band in which the uplink transmission that the terminal intends to transmit is located is the same as the frequency band in which the previous uplink transmission was located, but the number of ports used is different, then the aforementioned switching time length is required between two adjacent uplink transmissions. Of course, the frequency bands in which two adjacent uplink transmissions are located each belong to one of several frequency bands.

[0134] For example, if the frequency band in which the previous uplink transmission was located is band#1, the number of ports used is 1, the uplink transmission to be transmitted is also band#1, the number of ports used is 2, and band#1 is one of several frequency bands that support the terminal performing uplink transmission switching, then it is determined that the aforementioned switching time length is required between two adjacent uplink transmissions.

[0135] In another possible implementation, if the frequency bandwidths of two adjacent uplink transmissions of the terminal are the same, it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0136] Specifically, if the frequency bandwidths of two adjacent uplink transmissions of the terminal are the same and the number of ports used is the same, it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0137] Alternatively, if the frequency bandwidths of two adjacent uplink transmissions of the terminal are the same, but the number of ports used is different, it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal.

[0138] In the above embodiment, the terminal can determine whether a switching time is required between two adjacent uplink transmissions based on the content of the protocol agreement, and the base station can determine whether a switching time is required in the same manner, ensuring that the terminal and base station have a consistent understanding, improving the flexibility of network placement and scheduling, enabling the expansion of uplink transmission switching in the NR system, and providing high availability.

[0139] The uplink transmission method provided by this disclosure from the base station side is described below.

[0140] Embodiments of this disclosure provide an uplink transmission method, referring to Figure 8, which is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a base station, and this method may include the following steps 801.

[0141] In step 801, if it is determined that the terminal supports uplink transmission switching across multiple frequency bands, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal, and the total number of the multiple frequency bands is greater than 2.

[0142] In embodiments of the present disclosure, the multiple frequency bands are frequency bands that support the terminal performing uplink transmission switching, and the total number of the multiple frequency bands may be a positive integer greater than 2, for example 3, 4, 5..., but is not limited thereto. The base station can determine whether a switching time length is required between two adjacent uplink transmissions of the terminal by sending instructions to the terminal or in accordance with the protocol agreement.

[0143] In the above embodiment, the terminal supports uplink transmission switching across multiple frequency bands. When the total number of frequency bands is greater than two, the terminal and base station can determine, based on the same principle, whether a switching time is required between two adjacent uplink transmissions of the terminal. This ensures that the terminal and base station have a shared understanding, improves network placement and scheduling flexibility, enables the expansion of uplink transmission switching in the NR system, and provides high availability.

[0144] In some selective embodiments, referring to Figure 9, which is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a base station, this method may include the following steps 901.

[0145] In step 901, based on the relationship between the reference frequency band pair and the uplink transmission chain, it is determined whether a switching time length is required between two adjacent uplink transmissions of the terminal, and the reference frequency band pair includes one or two of the plurality of frequency bands.

[0146] The specific embodiment is the same as the method provided by the embodiment shown in Figure 4 on the terminal side, and therefore will not be explained here.

[0147] In the above embodiment, the terminal supports uplink transmission switching across multiple frequency bands. When the total number of frequency bands is greater than two, it is possible to determine whether a switching time is required between two adjacent uplink transmissions of the terminal based on the relationship between the reference frequency band pair and the uplink transmission chain. This ensures that the terminal and base station have a shared understanding, improves flexibility in network placement and scheduling, enables the expansion of uplink transmission switching in the NR system, and provides high availability.

[0148] In some selective embodiments, the above relationships can be reported to the base station after being determined by the terminal.

[0149] As shown in Figure 10, Figure 10 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a base station, and this method may include the following steps 1001-1002.

[0150] In step 1001, the association between the reference frequency band pair and the uplink transmission chain reported by the terminal is received.

[0151] In the embodiments of this disclosure, the terminal can first determine a reference frequency band pair and then determine the association relationship based on the reference frequency band pair. Furthermore, the terminal directly reports this association relationship to the base station. Specific embodiments are similar to the processes in steps 501 to 503 described above and are therefore omitted from this description.

[0152] In step 1002, based on the relationship described above, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal.

[0153] The method for determining whether or not a switching time is required is the same as in step 504 above, and will be omitted here.

[0154] In the above embodiment, the terminal can report to the base station after determining the relationship, so that both the terminal and the base station can determine whether a switching time is required between two adjacent uplink transmissions of the terminal based on this relationship. This ensures that the terminal and the base station have a shared understanding, improves the flexibility of network placement and scheduling, enables the expansion of uplink transmission switching in the NR system, and provides high availability.

[0155] In some selective embodiments, the base station may transmit instructional information to a terminal, which is used to indicate a reference frequency band pair, and the terminal determines the association based on the reference frequency band pair.

[0156] As shown in Figure 11, Figure 11 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a base station, and this method may include the following steps 1101 to 1103.

[0157] In step 1101, instruction information is transmitted to the terminal, and the instruction information is used to specify the reference frequency band pair.

[0158] In embodiments of the Disclosure, a base station may transmit instructional information to a terminal to inform it of a reference frequency band pair. Any group of reference frequency band pairs may include, but are not limited to, one or two of the multiple frequency bands described above. The multiple frequency bands are frequency bands that the terminal supports in performing uplink transmission switching, and the total number of the multiple frequency bands may be a positive integer greater than 2, for example, 3, 4, 5... The terminal may determine whether a switching time length is required based on instructions from the base station or the method of the protocol agreement.

[0159] In one possible implementation, the base station can transmit instruction information to the terminal via RRC signaling.

[0160] In another possible implementation, the base station can transmit instructional information to the terminal via MAC CE signaling.

[0161] In step 1102, the association relationship is determined based on the reference frequency band pair indicated by the instruction information.

[0162] The method by which the base station determines the relationships is the same as in step 602 above, and therefore will not be explained here.

[0163] In step 1103, based on the relationship described above, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal.

[0164] The method by which the base station determines whether a switching time is required between two adjacent uplink transmissions of the terminal is the same as in step 603 above, and therefore will not be explained here.

[0165] In the above embodiment, the base station transmits instruction information to the terminal, and the terminal determines a reference frequency band pair based on this instruction information, then determines the relationship between them, and based on this relationship, it can determine whether a switching time is required between two adjacent uplink transmissions of the terminal. The base station can determine whether a switching time is required in the same manner, ensuring that the understanding of the terminal and the base station is consistent, improving the flexibility of network placement and scheduling, enabling the expansion of uplink transmission switching in the NR system, and ensuring high availability.

[0166] In some selective embodiments, the base station can determine, based on the content of the protocol agreement, whether a switching time length is required between two adjacent uplink transmissions of a terminal.

[0167] As shown in Figure 12, Figure 12 is a flowchart of an uplink transmission method shown by one embodiment, which can be applied to a base station, and this method may include the following steps 1201-1202.

[0168] In step 1201, it is determined that the time-domain resources occupied by any two of the multiple frequency bands do not overlap.

[0169] In embodiments of this disclosure, a base station can determine, based on a protocol agreement, that the time-domain resources occupied by any two of the multiple frequency bands do not overlap. When the base station schedules or sets up an uplink transmission, it is necessary to ensure that the time-domain resources occupied by any two of the multiple frequency bands do not overlap. This ensures that the terminal does not perform uplink transmissions simultaneously on two or more of the multiple frequency bands.

[0170] In step 1202, it is determined whether a switching time is required between two adjacent uplink transmissions of the terminal.

[0171] The decision method is the same as in step 702 above, and therefore the explanation is omitted here.

[0172] In the above embodiment, it is possible to ensure that the terminal and base station have a consistent understanding, improve the flexibility of network placement and scheduling, enable the expansion of uplink transmission switching in the NR system, and achieve high availability.

[0173] To facilitate understanding of the uplink transmission method provided by this disclosure, the above method will be further described below with examples.

[0174] In Example 1, assuming the terminal supports two Tx chains in hardware, that is, it supports uplink transmission on up to two bands simultaneously. Assuming the terminal supports UL Tx switching on N bands, in this example N=4. The terminal supports, for example, 10 different Tx chain-band correspondences shown in Table 3, with the last column being the uplink transmission scenarios supported by the terminal for each type of Tx chain-band correspondence. Table 3 [Table 3-1] [Table 3-2]

[0175] Using cases 1 and 7 as examples, we will explain the correspondence between the Tx chain and the band, and the transmission methods supported by each type of case.

[0176] In Case 1, one Tx chain of the terminal operates on band #1, and the other Tx chain operates on band #2. For specific transmission scenarios, 1p+0p+0p+0p represents the terminal transmitting an uplink using a single port only on band #1, 0p+1p+0p+0p represents the terminal transmitting an uplink using a single port only on band #2, and 1p+1p+0p+0p represents the terminal simultaneously transmitting uplinks using single ports on both band #1 and band #2.

[0177] In Case 7, both of the terminal's Tx chains operate on band #1. For specific transmission scenarios, 1p+0p+0p+0p represents the terminal transmitting uplink using a single port on band #1 only, while 2p+0p+0p+0p represents the terminal transmitting uplink using dual ports on band #1 only.

[0178] Based on the table summarized above, the same transmission scenario exists for different Tx chain operating states (case 1-case 10). This prevents the base station from determining whether the terminal needs to perform UL Tx switching, which affects scheduling strategies. Specifically, the network cannot determine the correspondence between Tx chain and band in the following transmission scenarios.

number

[0179] To complete hardware switching for different Tx chain operating states, a terminal requires a certain switching period.

[0180] In this embodiment, in order to ensure consistency in understanding of UL Tx switching between the terminal and the network, the terminal can report the relationship between N reference frequency band pairs and their associated uplink Tx chains.

[0181] In this embodiment, we assume that N=1, the reference band pair includes two bands, and the two bands included in the band pair belong to M bands that support UL Tx switching. In this embodiment, we assume that M=4. We assume that the combination of bands that the terminal supports performing UL Tx switching is {band#1, band#2, band#3, band#4}. Specifically, the combination of bands that supports performing UL Tx switching may be reported by the terminal or determined in other ways, and this disclosure is not limiting.

[0182] Assuming that the relationship between the reference band pair and the Tx chain reported by the aforementioned terminal is case 1, that is, as shown in Table 4 below. Table 4 [Table 4]

[0183] If the band in which the actual UL transmission takes place is included within the aforementioned reference band pair, a switching period is not required.

[0184] Specifically, if the two adjacent uplink transmissions of the terminal are located in the same frequency band and this band belongs to a reference band pair of any group, a switching period is not required between the two adjacent uplink transmissions. Alternatively, if the two adjacent uplink transmissions of the terminal are located in different frequency bands and the two different frequency bands belong to the same reference frequency band pair, a switching period is not required between the two adjacent uplink transmissions.

[0185] If the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands do not belong to the same reference frequency band pair, or if the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to any group of reference frequency band pairs, and the correspondence between the same frequency band and the uplink transmission chain changes (for example, from a 1 Tx chain to a 2 Tx chain, or vice versa), then a switching period is required between the two adjacent uplink transmissions of the terminal.

[0186] Based on this method, when a base station schedules terminals to perform uplink transmissions in the following scenarios, it is not necessary to consider the switching time between adjacent uplink transmissions in the time domain.

[0187] Based on the method of this embodiment, the reference band pair reported by the terminal is {band#1, band#2}, and the corresponding correspondence between the Tx chain and band is that one Tx chain operates on band#1 and the other Tx chain operates on band#2. When the base station schedules the terminal to satisfy the transmission case of the reference band pair, i.e., (1p+0p+0p+0p) or (0p+1p+0p+0p) or (1p+1p+0p+0p), the terminal does not need to perform UL Tx switching in the three scheduling scenarios.

[0188] In Example 2, we assume that the terminal reports two reference band pairs, namely {band#1, band#2} and {band#3, band#4}, as described in Example 1. The Tx chain corresponding to the two reference band pairs reported by the terminal and the cases of simultaneously supported uplink transmissions are shown in Table 5. Table 5 [Table 5]

[0189] If an uplink transmission scheduled by a base station satisfies the transmission case corresponding to any one of the above reference band pairs, then the correspondence between the Tx chain and the band in this case is considered to be determined by the reference band pair, and no switching is required.

[0190] Of course, when switching from case 1 to case 6, a certain switching period is required between two adjacent uplink transmissions. Other technical details are the same as in Example 1 and will not be explained here.

[0191] In Example 3, assuming the terminal supports two Tx chains in hardware, that is, it supports uplink transmission on up to two bands simultaneously. Assuming the terminal supports UL Tx switching on N bands, in this example N=4. The terminal supports, for example, 10 different Tx chain-band correspondences shown in Table 3, with the last column being the uplink transmission scenarios supported by the terminal for each type of Tx chain-band correspondence.

[0192] Using cases 1 and 7 as examples, we will explain the correspondence between the Tx chain and the band, and the transmission methods supported by each type of case.

[0193] In Case 1, one Tx chain of the terminal operates on band #1, and the other Tx chain operates on band #2. For specific transmission scenarios, 1p+0p+0p+0p represents the terminal transmitting an uplink using a single port only on band #1, 0p+1p+0p+0p represents the terminal transmitting an uplink using a single port only on band #2, and 1p+1p+0p+0p represents the terminal simultaneously transmitting uplinks using single ports on both band #1 and band #2.

[0194] In Case 7, both of the terminal's Tx chains operate on band #1. For specific transmission scenarios, 1p+0p+0p+0p represents the terminal transmitting uplink using a single port on band #1 only, while 2p+0p+0p+0p represents the terminal transmitting uplink using dual ports on band #1 only.

[0195] Based on the table summarized above, the same transmission scenario exists for different Tx chain operating states (case 1-case 10). This prevents the base station from determining whether the terminal needs to perform UL Tx switching, which affects scheduling strategies. Specifically, the network cannot determine the correspondence between Tx chain and band in the following transmission scenarios.

number

[0196] To complete hardware switching for different Tx chain operating states, a terminal requires a certain switching period.

[0197] In this embodiment, to avoid the problem of mismatched understanding between the base station and the terminal regarding the Tx chain operating frequency band, the base station indicates to the terminal one or more reference band pairs via display signaling. The reference band pair includes two bands, and the two bands included in the band pair belong to M bands that support UL Tx switching. In this embodiment, we assume that M = 4. We assume that the combination of bands that the terminal supports performing UL Tx switching is {band#1, band#2, band#3, band#4}. Specifically, the combination of bands that supports performing UL Tx switching may be reported by the terminal or determined in other ways, and this disclosure is not limiting.

[0198] Assuming that the relationship between the reference band pair and the Tx chain reported by the aforementioned terminal is Case 1, i.e., as shown in Table 4.

[0199] If the band in which the actual UL transmission takes place is included within the aforementioned reference band pair, a switching period is not required.

[0200] Specifically, if two adjacent uplink transmissions are located in the same frequency band and the same frequency band belongs to any group of reference frequency band pairs, then no switching period is required between the two adjacent uplink transmissions. Alternatively, if two adjacent uplink transmissions are located in different frequency bands and the two different frequency bands belong to the same reference frequency band pair, then no switching period is required between the two adjacent uplink transmissions.

[0201] A switching period is required between two adjacent uplink transmissions if two adjacent uplink transmissions are located in different frequency bands, and the two different frequency bands do not belong to the same reference frequency band pair, or if two adjacent uplink transmissions at a terminal are located in the same frequency band, and the same frequency band belongs to any group of reference frequency band pairs, and the correspondence between the same frequency band and the uplink transmission chain changes (for example, from a 1 Tx chain to a 2 Tx chain, or vice versa).

[0202] Based on this method, when a base station schedules a terminal to perform uplink transmissions in the following scenarios, it is not necessary to consider the switching time between adjacent uplink transmissions in the time domain. Based on the method of this embodiment, the reference band pair reported by the terminal is {band#1, band#2}, and the corresponding correspondence between Tx chains and bands is that one Tx chain operates on band#1 and the other Tx chain operates on band#2. When the base station schedules a terminal to satisfy the transmission case of the reference band pair, i.e., (1p+0p+0p+0p) or (0p+1p+0p+0p) or (1p+1p+0p+0p), the terminal does not need to perform UL Tx switching in the three scheduling scenarios.

[0203] Furthermore, the explicit signaling transmitted by the base station may be RRC signaling or MAC CE signaling, but this disclosure does not limit it.

[0204] In Example 4, assuming the terminal supports two Tx chains in hardware, that is, it supports uplink transmission on a maximum of two bands simultaneously. Assuming the terminal supports UL Tx switching on N bands, in this example N=4. The terminal supports, for example, 10 different Tx chain-band correspondences shown in Table 3, with the last column being the uplink transmission scenarios supported by the terminal for each type of Tx chain-band correspondence.

[0205] Using cases 1 and 7 as examples, we will explain the correspondence between the Tx chain and the band, and the transmission methods supported by each type of case.

[0206] In Case 1, one Tx chain of the terminal operates on band #1, and the other Tx chain operates on band #2. For specific transmission scenarios, 1p+0p+0p+0p represents the terminal transmitting an uplink using a single port only on band #1, 0p+1p+0p+0p represents the terminal transmitting an uplink using a single port only on band #2, and 1p+1p+0p+0p represents the terminal simultaneously transmitting uplinks using single ports on both band #1 and band #2.

[0207] In Case 7, both of the terminal's Tx chains operate on band #1. For specific transmission scenarios, 1p+0p+0p+0p represents the terminal transmitting uplink using a single port on band #1 only, while 2p+0p+0p+0p represents the terminal transmitting uplink using dual ports on band #1 only.

[0208] Based on the table summarized above, the same transmission scenario exists for different Tx chain operating states (case1-case10). This prevents the base station from determining whether the terminal needs to perform UL Tx switching, which affects scheduling strategies. Specifically, the network cannot determine the correspondence between Tx chain and band in the following transmission scenarios.

number

[0209] To complete hardware-based switching for different Tx chain operating states, a terminal requires a certain switching period.

[0210] To avoid misunderstandings between the base station and the terminal regarding the terminal's Tx chain state, this disclosure ensures that both parties agree on the protocol in a predefined manner, and predefines the following rules.

[0211] The terminal is not expected to transmit uplink signals on both bands simultaneously.

[0212] In other words, the terminal can transmit uplink signals using only one of the M bands that support UL Tx switching.

[0213] If the frequency bands of two adjacent uplink transmissions from the aforementioned terminal are different, a UL Tx switching period is required between them. The frequency bands of the two adjacent uplink transmissions belong to M bands that support UL Tx switching.

[0214] If the frequency bandwidths of two adjacent uplink transmissions at a terminal are the same, a UL Tx switching period is not required between them. M is an integer greater than 2.

[0215] According to this method, regardless of the actual Tx chain state of the terminal and the number of ports the terminal uses when performing uplink transmissions on a particular band, it is necessary to assume that a switching period is required between two uplink transmissions as long as the band on which the terminal intends to perform uplink transmissions is different from the band on which the previous adjacent uplink transmission is located. Conversely, as long as the band on which the terminal intends to perform uplink transmissions is the same as the band on which the previous adjacent uplink transmission is located, it is assumed that no switching period is required between the two uplink transmissions.

[0216] Example 5: As described in Example 4, it may be considered to predefine the rules as follows: The band on which the terminal attempts to perform an uplink transmission is the same as the band on which the previous adjacent uplink transmission is located, but the number of ports used for the two transmissions are different. In this case, it is necessary to assume that a switching period is required between the two uplink transmissions.

[0217] In the above embodiment, the terminal supports uplink transmission switching across multiple frequency bands. When the total number of frequency bands is greater than two, the terminal and base station can determine, based on the same principle, whether a switching time is required between two adjacent uplink transmissions of the terminal. This ensures that the terminal and base station have a shared understanding, improves network placement and scheduling flexibility, enables the expansion of uplink transmission switching in the NR system, and provides high availability.

[0218] In correspondence with the above-described embodiment of the method for realizing the applied function, this disclosure further provides an embodiment of the device for realizing the applied function.

[0219] Referring to Figure 13, Figure 13 is a block diagram of an uplink transmission device shown in an exemplary embodiment, the device being applied to a terminal, If the terminal supports uplink transmission switching in multiple frequency bands, a first determination module 1301 is configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal, wherein the total number of the multiple frequency bands is greater than 2.

[0220] Referring to Figure 14, Figure 14 is a block diagram of an uplink transmission device shown in an exemplary embodiment, the device being applied to a base station, If it is determined that a terminal supports uplink transmission switching across multiple frequency bands, a second decision module 1401 is configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal, wherein the total number of the multiple frequency bands is greater than 2.

[0221] Since the embodiments of the apparatus essentially correspond to the embodiments of the method, relevant points should be explained by referring to some of the embodiments of the method. The embodiments of the apparatus described above are merely illustrative, and the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Depending on the actual needs, some or all of these modules can be selected to achieve the objectives of the scheme of this disclosure. Those skilled in the art can understand and implement it without paying any creative labor.

[0222] Accordingly, the Disclosure further provides a computer-readable storage medium in which a computer program is stored, the computer program performing an uplink transmission method described in any of the above-described terminal-side methods.

[0223] Accordingly, the Disclosure further provides a computer-readable storage medium in which a computer program is stored, the computer program performing the uplink transmission method described in any of the above base station-side descriptions.

[0224] Accordingly, this disclosure further provides an uplink transmission device, said device, Processor and Includes memory for storing instructions that can be executed by the processor, The processor is configured to perform the uplink transmission method described in any of the terminal-side options above.

[0225] Figure 15 is a block diagram of an uplink transmission device 1500 shown in an exemplary embodiment. For example, the device 1500 may be a terminal such as a mobile phone, tablet, digital book reader, multimedia player, wearable device, in-vehicle user equipment, iPad, or smart TV.

[0226] Referring to Figure 15, the device 1500 may include one or more of the following components: processing component 1502, memory 1504, power supply component 1506, multimedia component 1508, audio component 1510, input / output (I / O) interface 1512, sensor component 1516, and communication component 1518.

[0227] The processing component 1502 typically controls the overall operation of the device 1500, such as operations related to display, telephone ringing, random data access, camera operation, and recording. The processing component 1502 may include one or more processors 1520 for executing instructions to complete all or some of the steps of the uplink transmission method described above. The processing component 1502 may also include one or more modules to facilitate interaction with other components. For example, the processing component 1502 may include a multimedia module to facilitate interaction between the multimedia component 1508 and the processing component 1502. Furthermore, for example, the processing component 1502 may read executable instructions from memory to implement the steps of the uplink transmission method provided by each of the embodiments described above.

[0228] Memory 1504 is configured to store various types of data to support operation in the device 1500. Examples of this data include instructions for any application program or method to operate the device 1500, contact data, phonebook data, messages, images, videos, etc. Memory 1504 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0229] The power supply component 1506 provides power to each type of component of the device 1500. The power supply component 1506 may include a power management system, one or more power supplies, and other components related to the generation, management, and distribution of power to the device 1500.

[0230] The multimedia component 1508 includes a display that provides an output interface between the device 1500 and the user. In some embodiments, the multimedia component 1508 includes a front camera and / or a rear camera. When the device 1500 is in an operating mode such as shooting mode or video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera may be a single fixed optical lens system or may have a focal length and optical zoom capability.

[0231] The audio component 1510 is configured to output and / or input audio signals. For example, the audio component 1510 includes a microphone (MIC) configured to receive external audio signals when the device 1500 is in an operating mode such as calling mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 1504 or transmitted via communication component 1518. In some embodiments, the audio component 1510 further includes a speaker for outputting audio signals.

[0232] The I / O interface 1512 provides an interface between the processing component 1502 and a peripheral interface module, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0233] The sensor component 1516 includes one or more sensors to provide the device 1500 with various forms of state evaluation. For example, the sensor component 1516 can detect the on / off state of the device 1500, the relative positioning of components, for example, the display and keypad of the device 1500, and the sensor component 1516 can further detect changes in the position of the device 1500 or one of its components, the presence or absence of contact between the user and the device 1500, the direction and position of the device 1500 or acceleration / deceleration, and temperature changes of the device 1500. The sensor component 1516 may also include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor component 1516 may further include an optical sensor, such as a CMOS or CCD image sensor used in imaging applications. In some embodiments, the sensor component 1516 may further include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0234] The communication component 1518 is configured to facilitate wired or wireless communication between the device 1500 and other devices. The device 1500 can access wireless networks based on communication standards, such as Wi-Fi, 2G, 3G, 4G, 5G, 6G, or a combination thereof. In an exemplary embodiment, the communication component 1518 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1518 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency recognition (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0235] In an exemplary embodiment, the apparatus 1500 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to execute the uplink transmission method described in any of the above terminal sides.

[0236] In an exemplary embodiment, a non - transient machine - readable storage medium containing instructions, for example, a memory 1504 containing instructions, is further provided, and the instructions may be executed by a processor 1520 of the apparatus 1500 to complete the above uplink transmission method. For example, the non - transient computer - readable storage medium may be a ROM, a random access memory (RAM), a CD - ROM, magnetic tape, a floppy disk, or an optical data storage device.

[0237] Correspondingly, the present disclosure further provides an uplink transmission apparatus, and the apparatus includes a processor and a memory for storing instructions executable by the processor, and the processor is configured to execute the uplink transmission method described in any of the above base stations.

[0238] As shown in FIG. 16, FIG. 16 is a schematic configuration diagram of an uplink transmission apparatus 1600 shown by an exemplary embodiment. For example, the apparatus 1600 may be provided as a base station. Referring to FIG. 16, the apparatus 1600 includes a processing component 1622, a wireless transmission / reception component 1624, an antenna component 1626, and a signal processing unit specific to the wireless interface, and the processing component 1622 may further include at least one processor.

[0239] One of the processors of the processing component 1622 may be configured to execute the uplink transmission method described in any of the above.

[0240] Those skilled in the art can easily conceive of other embodiments of the present disclosure after studying the specification and practicing the invention disclosed in the specification. The present disclosure is intended to cover any variations, uses or appropriate changes of the present disclosure, and these variations, uses or appropriate changes comply with the general principles of the present disclosure and include well-known common knowledge or conventional technical means in the art not disclosed in the present disclosure. The specification and examples are regarded as merely illustrative, and the true scope and spirit of the present disclosure are provided by the following claims.

[0241] It should be noted that the present disclosure is not limited to the exact structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An uplink transmission method applicable to a terminal, If the terminal supports uplink transmission switching in multiple frequency bands, the step of determining whether a switching time is required between two adjacent uplink transmissions of the terminal includes the step of the total number of the multiple frequency bands being greater than 2. The step of determining whether a switching time is required between two adjacent uplink transmissions of the aforementioned terminal is: If the frequency bands of two adjacent uplink transmissions of the terminal are different, the step of determining whether the switching time length is required between the two adjacent uplink transmissions of the terminal, The step includes determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the frequency bandwidths of the two adjacent uplink transmissions of the terminal are the same. An uplink transmission method characterized by the following:

2. The step of determining whether a switching time is required between two adjacent uplink transmissions of the aforementioned terminal is: A step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between a reference frequency band pair and an uplink transmission antenna port, the step of including the reference frequency band pair containing one or two of the plurality of frequency bands, and the uplink transmission antenna port being used to perform uplink transmission in an uplink transmission chain. The uplink transmission method according to feature 1.

3. The aforementioned uplink transmission method is: The steps include determining the aforementioned reference frequency band pair, The steps include determining the relationship based on the aforementioned reference frequency band pair, Further including, The uplink transmission method according to feature 2.

4. The aforementioned uplink transmission method is: A step of receiving instruction information transmitted by a base station, wherein the instruction information is used to indicate the reference frequency band pair, The step of determining the association relationship based on the reference frequency band pair indicated by the instruction information, further comprising: The uplink transmission method according to feature 2.

5. The step of receiving instruction information transmitted by the base station is: The steps of receiving the instruction information transmitted by the base station via radio resource control (RRC) signaling, The step includes receiving the instruction information transmitted by the base station via media access control element (MAC CE) signaling, The uplink transmission method according to feature 4.

6. The step of determining the aforementioned relationship is: When performing uplink transmission using a first frequency band included in a first reference frequency band pair, the steps include determining the association relationship based on the first reference frequency band pair, wherein the first reference frequency band pair is any one of the reference frequency band pairs. The uplink transmission method according to feature 3.

7. The step of determining the association relationship based on the first reference frequency band pair is: The steps include determining that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band, The process includes the step of determining that another uplink transmission chain corresponding to the first reference frequency band pair operates in a second frequency band included in the first reference frequency band pair, The uplink transmission method according to feature 6.

8. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, is: The step includes determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the frequency bands in which the two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair. The uplink transmission method according to feature 7.

9. If the frequency bands in which two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, the step of determining that the switching time length is not required between the two adjacent uplink transmissions of the terminal is as follows: If the two adjacent uplink transmissions of the terminal are located in the same frequency band, and the same frequency band belongs to any group of reference frequency band pairs, then it is determined that the switching time length is not required between the two adjacent uplink transmissions of the terminal, or The step includes determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands belong to the same reference frequency band pair. The uplink transmission method according to feature 8.

10. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, is: If the two adjacent uplink transmissions of the terminal are located in different frequency bands, and the two different frequency bands do not belong to the same reference frequency band pair, the step of determining that the switching time length is required between the two adjacent uplink transmissions of the terminal, or The step includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the frequency bands in which two adjacent uplink transmissions of the terminal are located are the same, the same frequency band belongs to the reference frequency band pair of any group, and the correspondence between the same frequency band and the uplink transmission chain changes, The aforementioned uplink transmission method is: The further step includes determining that the correspondence relationship has changed if the number of uplink transmission chains corresponding to the same frequency band changes. The uplink transmission method according to feature 2.

11. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between the reference frequency band pair and the uplink transmission chain, is: If the reference frequency band pair is in multiple groups, the step includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the reference frequency band pair corresponding to two adjacent uplink transmissions of the terminal changes. The uplink transmission method according to feature 2.

12. The aforementioned uplink transmission method is: The step further includes determining that the terminal does not expect to perform uplink transmission simultaneously on two or more frequency bands among the plurality of frequency bands, The uplink transmission method according to feature 1.

13. The step of determining whether a switching time is required between two adjacent uplink transmissions of the aforementioned terminal is: The step includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal if the frequency bandwidths of the two adjacent uplink transmissions of the terminal are the same, but the number of ports used for the two adjacent uplink transmissions are different. The uplink transmission method according to feature 12.

14. An uplink transmission method applicable to a base station, If it is determined that a terminal supports uplink transmission switching in multiple frequency bands, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal includes the step of determining whether the total number of the multiple frequency bands is greater than two. The step of determining whether a switching time is required between two adjacent uplink transmissions of the aforementioned terminal is: If the frequency bands of two adjacent uplink transmissions of the terminal are different, the step of determining whether the switching time length is required between the two adjacent uplink transmissions of the terminal, The step includes determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the frequency bandwidths of the two adjacent uplink transmissions of the terminal are the same. An uplink transmission method characterized by the following:

15. The step of determining whether a switching time is required between two adjacent uplink transmissions of the aforementioned terminal is: A step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, based on the relationship between a reference frequency band pair and an uplink transmission antenna port, the step of including the reference frequency band pair containing one or two of the plurality of frequency bands, and the uplink transmission antenna port being used to perform uplink transmission in an uplink transmission chain. The uplink transmission method according to feature 14.

16. The aforementioned uplink transmission method is: A step of transmitting instruction information to the terminal, wherein the instruction information is used to indicate the reference frequency band pair, The step further includes determining the association relationship based on the reference frequency band pair indicated by the instruction information, The step of sending instruction information to the aforementioned terminal is: The steps of transmitting the instruction information to the terminal via radio resource control (RRC) signaling, The step includes transmitting the instruction information to the terminal via media access control element (MAC CE) signaling, The uplink transmission method according to claim 15, characterized by the feature described above.

17. The aforementioned uplink transmission method is: The step further includes determining that the time-domain resources occupied by any two of the aforementioned plurality of frequency bands do not overlap. The uplink transmission method according to feature 14.

18. It is a terminal, Processor and Includes memory for storing instructions that can be executed by the processor, The aforementioned processor, If the terminal supports uplink transmission switching in multiple frequency bands, the system is configured to perform a step of determining whether a switching time is required between two adjacent uplink transmissions of the terminal, wherein the total number of the multiple frequency bands is greater than 2. The step of determining whether a switching time is required between two adjacent uplink transmissions of the aforementioned terminal is: If the frequency bands of two adjacent uplink transmissions of the terminal are different, the step of determining whether the switching time length is required between the two adjacent uplink transmissions of the terminal, The step includes determining that the switching time length is not required between two adjacent uplink transmissions of the terminal if the frequency bandwidths of the two adjacent uplink transmissions of the terminal are the same. A terminal characterized by the following features.

19. It is a base station, Processor and Includes memory for storing instructions that can be executed by the processor, The processor is configured to perform the uplink transmission method described in claim 14. A base station characterized by the following features.

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