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 the 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] Optionally, 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 including one or two of the plurality of frequency bands being included in the reference frequency band pair.

[0007] Optionally, the method is the step of determining the reference frequency band pair, the step of determining the relationship based on the reference frequency band pair, and further includes the step of reporting the relationship to a base station.

[0008] Optionally, the method is the step of receiving indication information transmitted by a base station, the indication information being used to indicate the reference frequency band pair, and further includes the step of determining the relationship based on the reference frequency band pair indicated by the indication information.

[0009] Optionally, the step of receiving the indication information transmitted by the base station is the step of receiving the indication information transmitted by the base station via radio resource control (RRC) signaling, or the step of receiving the indication information transmitted by the base station via media access control control element (MAC CE) signaling.

[0010] Optionally, the step of determining the relationship is When uplink transmission is performed using the first frequency band included in the first reference frequency band pair, a step of 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.

[0011] Optionally, the step of determining the association relationship based on the first reference frequency band pair includes: Determining that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band; and Determining that the other uplink transmission chain corresponding to the first reference frequency band pair operates in the second frequency band included in the first reference frequency band pair.

[0012] Optionally, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal based on the association relationship between the reference frequency band pair and the uplink transmission chain includes: When the frequency bands where two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, determining that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0013] Optionally, the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal when the frequency bands where two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair includes: When the frequency bands where two adjacent uplink transmissions of the terminal are located are the same and the same frequency band belongs to the reference frequency band pair, determining that the switching time length is not required between two adjacent uplink transmissions of the terminal, or When the frequency bands in which two adjacent uplink transmissions of the terminal are located are different, and when the two different frequency bands belong to the same reference frequency band pair, the method includes determining that the switching time length is not required between two adjacent uplink transmissions of the terminal.

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

[0015] Optionally, the method further includes determining that the correspondence has changed when the number of uplink transmission chains corresponding to the same frequency band changes.

[0016] Optionally, based on the association relationship between the reference frequency band pair and the uplink transmission chain, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is When the reference frequency band pair is a plurality of groups, and when the reference frequency band pair corresponding to two adjacent uplink transmissions of the terminal changes, the method includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal.

[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 duration 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 duration 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 duration is required between two adjacent uplink transmissions of the terminal.

[0019] Optionally, the step of determining whether a switching time duration 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 duration 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 the embodiments of the present disclosure, there is provided an uplink transmission method applied to a base station, the method including: when it is determined that the terminal is supported to perform uplink transmission switching in a plurality of frequency bands, determining whether a switching time duration is required between two adjacent uplink transmissions of the terminal, where the total number of the plurality of frequency bands is greater than 2.

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

[0023] Optionally, the method further comprises: Receiving the association relationship reported by the terminal.

[0024] Optionally, the method further comprises: Transmitting indication information to the terminal, the indication information being used to indicate the reference frequency band pair; and Determining the association relationship based on the reference frequency band pair indicated by the indication information.

[0025] Optionally, the step of transmitting indication information to the terminal comprises: Transmitting the indication information to the terminal via radio resource control (RRC) signaling, or Transmitting the indication information to the terminal via media access control control element (MAC CE) signaling.

[0026] Optionally, the step of determining the association relationship comprises: When the terminal performs uplink transmission using a first frequency band included in a first reference frequency band pair, determining the association relationship based on the first reference frequency band pair, the first reference frequency band pair being any one of the reference frequency band pairs.

[0027] Optionally, the step of determining the association relationship based on the first reference frequency band pair comprises: Determining that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band; 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, and including.

[0028] Optionally, based on the relationship between the reference frequency band pair and the uplink transmission chain, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is When the frequency bands where two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, including the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0029] Optionally, when the frequency bands where 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 When the frequency bands where two adjacent uplink transmissions of the terminal are located are the same and the same frequency band belongs to any group of the reference frequency band pairs, the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal, or, When the frequency bands where two adjacent uplink transmissions of the terminal are located are different and the two different frequency bands belong to the same reference frequency band pair, including the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0030] Optionally, based on the relationship between the reference frequency band pair and the uplink transmission chain, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is When the frequency bands in which two adjacent uplink transmissions of the terminal are located are different and the two different frequency bands do not belong to the same reference frequency band pair, determining that the switching time length is required between two adjacent uplink transmissions of the terminal, or including determining that the switching time length is required between two adjacent uplink transmissions of the terminal when the frequency bands in which two adjacent uplink transmissions of the terminal are located are the same, the same frequency band belongs to an arbitrary group of the reference frequency band pairs, and the correspondence between the same frequency band and the uplink transmission chain changes.

[0031] Optionally, the method further includes determining that the correspondence has changed when the number of uplink transmission chains corresponding to the same frequency band changes.

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

[0033] Optionally, the method further includes determining that the time domain resources occupied by any two of the plurality of frequency bands do not overlap.

[0034] Optionally, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is 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, including determining that the switching time length is required between two adjacent uplink transmissions of the terminal.

[0035] Optionally, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is When the frequency bands of two adjacent uplink transmissions of the terminal are the same, including determining that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0036] Optionally, the number of ports used for two adjacent uplink transmissions of the terminal is the same or different.

[0037] According to a third aspect of the embodiments of the present disclosure, there is provided an uplink transmission apparatus applied to a terminal, and the apparatus includes A first determination module configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal when the terminal supports uplink transmission switching in a plurality of frequency bands, the first determination module including a plurality of frequency bands where the total number is greater than 2.

[0038] According to a fourth aspect of the embodiments of the present disclosure, there is provided an uplink transmission apparatus applied to a base station, and the apparatus includes A second determination module configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal when it is determined that the terminal supports uplink transmission switching in a plurality of frequency bands, the second determination module including a plurality of frequency bands where the total number is greater than 2.

[0039] According to a fifth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium storing a computer program, and the computer program executes the uplink transmission method described in any one of the above terminal sides.

[0040] According to a sixth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium storing a computer program, and the computer program executes the uplink transmission method described in any one of the above base station sides.

[0041] According to a seventh aspect of the embodiments of the present disclosure, there is provided an uplink transmission apparatus, a processor, a memory for storing instructions executable by the processor, and includes, the processor is configured to execute the uplink transmission method described in any one of the above terminal sides.

[0042] According to an eighth aspect of the embodiments of the present disclosure, there is provided an uplink transmission apparatus, a processor, a memory for storing instructions executable by the processor, and includes, the processor is configured to execute the uplink transmission method described in any one of the above base stations.

[0043] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects.

[0044] In an embodiment of the present disclosure, the terminal supports 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 length 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 extension of uplink transmission switching in the NR system, and having high availability.

[0045] It should be noted that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit the present disclosure.

Brief Description of the Drawings

[0046] The drawings here are incorporated into the specification, constitute a part of this specification, show embodiments that conform to the present disclosure, and are used together with the specification to explain the principles of the present invention.

Figure 1

Figure 2A

Figure 2B

Figure 2C

Figure 3

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Figure 10

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Figure 16

Mode for Carrying Out the Invention

[0047] Here, exemplary embodiments will be described in detail, and examples thereof will be shown in the drawings. When the following description relates to the drawings, unless otherwise expressed, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments that are consistent with the present invention. Rather, they are merely examples of apparatuses and methods that are 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 for specific embodiments and are not intended to limit the disclosure. The singular forms "a", "said", and "the" used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. The term "and / or" as used herein refers to any combination or all possible combinations of at least one of the associated listed items.

[0049] In this disclosure, terms such as first, second, third, etc. may be used to describe various information, but it should be understood that this information should not be limited to these terms. These terms are only used to distinguish the same type of information. For example, unless departing from the scope of this disclosure, the first information can be called the second information, and similarly, the second information can also be called the first information. Depending on the context, the word "if" used herein can 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 one terminal, two Tx chains can be used for uplink transmission in the same band, and each can also be used for uplink transmission in two bands. For one possible hardware implementation of the Tx chain, for example, as shown in FIG. 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 and is determined by actual scheduling or configuration. There is a possibility that the terminal transmits uplink data according to a single port in one band, but the base station cannot determine whether the terminal has performed Tx switching. For example, the terminal supports UL Tx switching among four bands, and the correspondence between the Tx chain and the band can be shown in Table 1, for example. Table 1

Table 1

[0052] In this example, the base station cannot distinguish whether the Tx chain on the terminal side belongs to Case 1 or Case 2, and the understanding between the base station side and the terminal side becomes inconsistent.

[0053] In Release-16 and Release-17, the terminal only supports UL Tx switching between two bands, and supports three scenarios: evolved universal terrestrial 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, in the EN-DC scenario, 2 Tx transmissions are not supported.

[0054] Furthermore, two different UL Tx switching schemes are supported, namely: SwitchedUL, which does not support the terminal to perform uplink transmission simultaneously in two bands, and It is a Dual UpLink (DualUL) that supports the terminal to perform uplink transmission simultaneously on two bands.

[0055] The above two types of transmission modes are set by Radio Resource Control (RRC) signaling.

[0056] The protocol of the current solution only supports UL Tx switching on two bands. In the Rel-18 multicarrier enhancement project, it is clarified that research on UL Tx switching with more than two bands is necessary.

[0057] Taking the terminal's two UL Tx switches on four bands as an example, there is a relationship between the 10 different Tx chains shown in Table 2 and the frequency band pairs (a frequency band pair can include one or two of the four bands), and there are multiple different actual transmission situations for each type of relationship. Table 2

Table 2-1

Table 2-2

[0058] Taking case1-1 as an example, 1p+0p+0p+0p means the terminal transmits using a single port only on band#1, 0p+1p+0p+0p means the terminal transmits using a single port only on band#2, and 1p+1p+0p+0p means the terminal transmits using a single port on band#1 and band#2 simultaneously.

[0059] However, for the above specific uplink transmission scenarios, there may be a problem that the understanding between the base station and the terminal does not match regarding the corresponding relationship between the Tx chain and the band. The following Table 2 shows cases where such a mismatch in understanding is likely to occur. Case1-1(1p+0p+0p+0p) is understood as Case1-2(1p+0p+0p+0p) by the base station side. Case1-1(1p+0p+0p+0p) is understood as Case1-3(1p+0p+0p+0p) by the base station side. Case1-1(0p+1p+0p+0p) is understood as Case1-4(0p+1p+0p+0p) by the base station side. Case1-1(0p+1p+0p+0p) is understood as Case1-5(0p+1p+0p+0p) by the base station side. Case1-2(1p+0p+0p+0p) is understood as Case1-3(1p+0p+0p+0p) by the base station side. Case1-2(0p+0p+1p+0p) is understood as Case1-4(0p+0p+1p+0p) by the base station side. Case1-3(0p+0p+0p+1p) is understood as Case1-5(0p+0p+0p+1p) by the base station side. Case1-1(1p+0p+0p+0p) is understood as Case2-1(1p+0p+0p+0p) by the base station side. Case1-1(0p+1p+0p+0p) is understood as Case2-2(0p+1p+0p+0p) by the base station side. Case1-2(1p+0p+0p+0p) is understood as Case2-1(1p+0p+0p+0p) by the base station side. Case1-2(0p+0p+1p+0p) is understood as Case2-3(0p+0p+1p+0p) by the base station side. Case1-3(1p+0p+0p+0p) is understood as Case2-1(1p+0p+0p+0p) by the base station side. Case1-3(0p+0p+0p+1p) is understood as Case2-4(0p+0p+0p+1p)) by the base station side. Case1-4(0p+1p+0p+0p) is understood as Case2-2(0p+1p+0p+0p) by the base station side. Case1-4(0p+0p+1p+0p) is understood as Case2-3(0p+0p+1p+0p) by the base station side. Case1-5(0p+1p+0p+0p) is understood as Case2-2(0p+1p+0p+0p) by the base station side. Case1-5(0p+0p+0p+1p) is understood as Case2-2(0p+0p+0p+1p) by the base station side.

[0060] As can be seen from the above, when the terminal performs UL Tx switching with more than two bands, the base station cannot determine whether the Tx chain on the terminal side needs to perform switching, so it cannot determine whether a switching time length (for example, a switching period) is required between two adjacent uplink transmissions of the terminal. As a result, the understanding between the terminal and the base station does not match.

[0061] Note that the two adjacent transmissions in this application can refer to the transmission that should actually be transmitted currently and the previous adjacent transmission. Different transmissions are not limited to being adjacent in the time domain and correspond to different resource schedulings.

[0062] To solve the above technical problems, the present disclosure provides the following uplink transmission method. Hereinafter, the uplink transmission method provided by the present disclosure will be described from the terminal side.

[0063] Embodiments of the present disclosure provide an uplink transmission method. As shown in FIG. 3, FIG. 3 is a flowchart of the uplink transmission method shown by an embodiment and can be applied to a terminal. This method can include the following step 301.

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

[0065] In the embodiments of the present disclosure, the plurality of frequency bands are frequency bands that support the terminal to perform uplink transmission switching, and the total number of the plurality of frequency bands may be a positive integer greater than 2, such as 3, 4, 5... The present disclosure does not limit this. The terminal can determine whether a switching time length is required between two adjacent uplink transmissions of the terminal based on an instruction transmitted by the base station or based on a protocol agreement method.

[0066] In the above embodiments, when the terminal supports uplink transmission switching in a plurality of frequency bands and 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 length 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.

[0067] In some alternative embodiments, as shown in FIG. 4, FIG. 4 is a flowchart of an uplink transmission method shown by an embodiment and can be applied to a terminal. This method can 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 one or two of the plurality of frequency bands are included in the reference frequency band pair.

[0069] In embodiments of the present disclosure, the plurality of frequency bands are frequency bands that support a terminal to perform uplink transmission switching. The total number of the plurality of frequency bands may be a positive integer greater than 2, for example, 3, 4, 5... The present disclosure does not limit this.

[0070] In embodiments of the present disclosure, the reference frequency band pair may be one group or a plurality of groups, and the present disclosure does not limit this. For each reference frequency band pair, it may include one or two of the above-mentioned plurality of frequency bands. When the plurality of frequency bands that support a terminal to perform uplink transmission switching are determined, the possible configuration cases of the reference frequency band pair can also be determined accordingly. Assuming that the total number of the plurality of frequency bands is N, the possible configuration cases of the reference frequency band pair are M types, JPEG2025516251000005.jpg314 and are as follows.

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

[0072] The case where one of the plurality of frequency bands is included in the reference frequency band pair corresponds to any one of cases 2-1 to 2-4 in Table 2, and the case where two of the plurality of frequency bands are included in the reference frequency band pair can correspond to any 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 of the first to fourth frequency bands.

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

[0075] In the above embodiments, the terminal supports uplink transmission switching in multiple frequency bands. When the total number of multiple frequency bands is greater than 2, based on the correlation between the reference frequency band pair and the uplink transmission chain, it can be determined whether a switching time length is required between two adjacent uplink transmissions of the terminal, ensuring that the understanding between 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.

[0076] In some alternative embodiments, the above correlation can be reported to the base station after being determined by the terminal.

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

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

[0079] In the embodiments of the present disclosure, the terminal can determine the reference frequency band pair by itself according to its own situation. The reference frequency band pair can include one or two of the above multiple frequency bands, and the present disclosure does not limit this. The multiple frequency bands are the frequency bands that support the terminal to perform uplink transmission switching. The total number of the multiple frequency bands may be a positive integer greater than 2, such as 3, 4, 5... and the present disclosure does not limit this. The terminal can determine whether a switching time length is required based on the instruction of the base station or the protocol agreement method.

[0080] For example, when the total number of multiple frequency bands is 4, the terminal can determine one group or multiple groups of reference frequency band pairs from Table 2, and the present disclosure does not limit this.

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

[0082] In an embodiment of the present disclosure, the terminal can determine the association relationship in the following manner.

[0083] When uplink transmission is performed using the first frequency band included in the first reference frequency band pair, based on the first reference frequency band pair, determine the association relationship, and the first reference frequency band pair is any one of the reference frequency band pairs.

[0084] That is, when the actual uplink transmission of the terminal is performed in the first frequency band in the first reference frequency band pair, the above association 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 can also determine that another uplink transmission chain corresponding to the first reference frequency band pair operates in the second frequency band included in the first reference frequency band pair.

[0086] For example, when the actual uplink transmission is performed in band#1 in the reference frequency band pair {band#1, band#2}, 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, report to the base station the association relationship between the reference frequency band pair and the uplink transmission chain.

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

[0089] In one possible implementation, when the frequency bands where 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, when the frequency bands where two adjacent uplink transmissions of the terminal are located are the same and the same frequency band belongs to any group of the reference frequency band pairs, it is determined that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0091] For example, assume that the frequency bands where two adjacent uplink transmissions of the terminal are located are the same, both are band#1, and band#1 belongs to any group of reference frequency band pairs determined previously and belongs to the reference frequency band pair {band#1, band#2}. Then it is determined that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0092] Specifically, when the frequency bands where two adjacent uplink transmissions of the terminal are located are different and the two different frequency bands 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.

[0093] For example, assume that the frequency bands where two adjacent uplink transmissions of the terminal are located are different, one is band#1 and the other is band#2, and band#1 and band#2 belong to the same reference frequency band pair {band#1, band#2} determined previously. Then it is determined that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0094] In another possible implementation, if the frequency bands where two adjacent uplink transmissions of the terminal are located are different, 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 two adjacent uplink transmissions of the terminal.

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

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

[0097] When the number of uplink transmission chains corresponding to the same frequency band of the terminal changes, it is determined that the correspondence has changed. Specifically, the number of uplink transmission chains corresponding to this same frequency band changes from one to two, or from two to one, and the terminal regards that the number of uplink transmission chains corresponding to this frequency band has changed in either case. Furthermore, it can be determined that the switching time length is required between two adjacent uplink transmissions of the terminal.

[0098] For example, assume that the frequency bands where two adjacent uplink transmissions of the terminal are located are the same, both being band#1, and band#1 belongs to an arbitrary group of pre-determined reference frequency band pairs, and belongs to the reference frequency band pair {band#1, band#2}. However, if the number of uplink transmission chains corresponding to band#1 changes from one to two, the terminal determines that the switching time length is required between two adjacent uplink transmissions of the terminal.

[0099] In another possible implementation, when the reference frequency band pair is a plurality of groups, if the reference frequency band pair corresponding to two adjacent uplink transmissions of the terminal changes, the terminal determines that the switching time length is required between two adjacent uplink transmissions of the terminal.

[0100] For example, there are two groups of the reference frequency band pairs of the terminal, which are {band#1, band#2} and {band#3, band#4} respectively. If the previous uplink transmission of the terminal corresponds to {band#1, band#2} and the uplink transmission to be performed corresponds to {band#3, band#4}, the terminal determines that the switching time length is required between two adjacent uplink transmissions.

[0101] In the above embodiments, the terminal can report to the base station after determining the relevant relationship so that both the terminal side and the base station side determine whether the switching time length is required between two adjacent uplink transmissions of the terminal based on this relevant relationship, ensuring that the understanding between 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.

[0102] In some alternative embodiments, the base station can send indication information to the terminal, and this indication information is used to indicate the reference frequency band pair, and the terminal determines the relevant relationship based on the reference frequency band pair.

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

[0104] In step 601, receive the indication information sent by the base station, and the indication information is used to indicate the reference frequency band pair.

[0105] In an embodiment of the present disclosure, the base station can send indication information to notify the terminal of the reference frequency band pair. Any group of reference frequency band pairs can include one or two of the above-mentioned multiple frequency bands, and the present disclosure does not limit this. The multiple frequency bands are frequency bands that support the terminal to perform uplink transmission switching. The total number of the multiple frequency bands can also be a positive integer greater than 2, such as 3, 4, 5..., and the present disclosure does not limit this. The terminal can determine whether the switching time length is required based on the indication of the base station or the protocol agreement method.

[0106] In one possible implementation form, the terminal can receive this indication information sent by the base station via RRC signaling.

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

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

[0109] In an embodiment of the present disclosure, the terminal can determine the relevant relationship in the following manner.

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

[0111] That is, when the actual uplink transmission of the terminal is performed in the first frequency band in the first reference frequency band pair, the above-mentioned association relationship can be determined by this first reference frequency band pair.

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

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

[0114] In one possible implementation, when the frequency bands where two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, it is determined that no switching time length is required between two adjacent uplink transmissions of the terminal.

[0115] Specifically, when the frequency bands where two adjacent uplink transmissions of the terminal are located are the same, and the same frequency band belongs to any group of the reference frequency band pairs, it is determined that no switching time length is required between two adjacent uplink transmissions of the terminal.

[0116] Specifically, if the frequency bands in which two adjacent uplink transmissions of the terminal are located are different, and the 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 frequency bands in which two adjacent uplink transmissions of the terminal are located are different, 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 frequency bands in which two adjacent uplink transmissions of the terminal are located are the same, the same frequency band belongs to any group of the reference frequency band pairs, and the correspondence between the same frequency band and the uplink transmission chain changes, it is determined that the switching time length is required between the two adjacent uplink transmissions of the terminal.

[0119] When the number of uplink transmission chains corresponding to the same frequency band of the terminal changes, it is determined that the correspondence has changed. Specifically, when the number of uplink transmission chains corresponding to this same frequency band changes from one to two, or from two to one, the terminal regards that the number of uplink transmission chains corresponding to this frequency band has changed in both cases. Furthermore, it can be determined that the switching time length is required between two adjacent uplink transmissions of the terminal.

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

[0121] In the above embodiments, the base station transmits the indication information to the terminal. After the terminal determines the reference frequency band pair based on this indication information, it further determines the association relationship. Based on this association relationship, it can be determined whether a switching time length is required between two adjacent uplink transmissions of the terminal. The base station side can also determine whether a switching time length is required in the same manner, ensuring that the understanding of the terminal and the base station is consistent, improving the flexibility of network deployment and scheduling, realizing the extension of uplink transmission switching in the NR system, and having high availability.

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

[0123] As shown in FIG. 7, FIG. 7 is a flowchart of an uplink transmission method shown by an embodiment and can be applied to a terminal. This method can include the following steps 701 to 702.

[0124] In step 701, when the terminal supports uplink transmission switching in a plurality of frequency bands, it is determined that the terminal does not expect to perform uplink transmission simultaneously in two or more of the plurality of frequency bands.

[0125] In the embodiments of the present disclosure, the plurality of frequency bands are frequency bands that support the terminal to perform uplink transmission switching. The total number of the plurality of frequency bands may be a positive integer greater than 2, such as 3, 4, 5... The present disclosure does not limit this.

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

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

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

[0129] That is, when the frequency band where the uplink transmission to be sent by the terminal is located is different from the frequency band where the previous uplink transmission was located, the switching time length is required between two adjacent uplink transmissions.

[0130] Of course, the frequency bands where two adjacent uplink transmissions are located both belong to a plurality of frequency bands.

[0131] For example, the frequency band where the previous uplink transmission was located is band#1, and the uplink transmission to be sent is band#2, and both belong to a plurality of frequency bands that support the terminal to perform uplink transmission switching. It is determined that the switching time length is required between two adjacent uplink transmissions.

[0132] In another possible implementation, 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, it is determined that the switching time length is required between two adjacent uplink transmissions of the terminal.

[0133] That is, when the frequency band where the uplink transmission to be sent by the terminal is located is the same as the frequency band where the previous uplink transmission was located and the number of ports used is different, the switching time length is required between two adjacent uplink transmissions. Of course, the frequency bands where two adjacent uplink transmissions are located both belong to one of a plurality of frequency bands.

[0134] For example, the frequency band where the previous uplink transmission is located is band#1, the number of ports used is 1, the uplink transmission to be sent is also band#1, the number of ports used is 2, and when band#1 belongs to one of the multiple frequency bands that support the terminal to perform uplink transmission switching, it is determined that the switching time length is required between two adjacent uplink transmissions.

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

[0136] Specifically, when the frequency bands 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 two adjacent uplink transmissions of the terminal.

[0137] Or, when the frequency bands of two adjacent uplink transmissions of the terminal are the same and the number of ports used is different, it is determined that the switching time length is not required between two adjacent uplink transmissions of the terminal.

[0138] In the above embodiments, the terminal can determine whether the switching time length is required between two adjacent uplink transmissions of the terminal based on the content of the protocol agreement. The base station side can also determine whether the switching time length is required in the same way, ensuring that the understanding between 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.

[0139] Hereinafter, the uplink transmission method provided by the present disclosure from the base station side will be described.

[0140] Embodiments of the present disclosure provide an uplink transmission method. Referring to FIG. 8, FIG. 8 is a flowchart of an uplink transmission method shown by an embodiment, which can be applied to a base station. This method can include the following step 801.

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

[0142] In embodiments of the present disclosure, the plurality of frequency bands are frequency bands in which the terminal supports uplink transmission switching, and the total number of the plurality of frequency bands may be a positive integer greater than 2, such as 3, 4, 5... The present disclosure does not limit this. By the base station transmitting an instruction to the terminal or based on a protocol agreement method, it can be determined whether a switching time length is required between two adjacent uplink transmissions of the terminal.

[0143] In the above embodiments, when the terminal supports uplink transmission switching in a plurality of frequency bands and 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 length 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.

[0144] In some alternative embodiments, referring to FIG. 9, FIG. 9 is a flowchart of an uplink transmission method shown by an embodiment, which can be applied to a base station. This method can include the following step 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 one or two of the plurality of frequency bands are included in the reference frequency band pair.

[0146] The specific implementation is the same as the method provided by the example shown in FIG. 4 on the terminal side, and the description is omitted here.

[0147] In the above embodiment, the terminal is supported 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, based on the relationship between the reference frequency band pair and the uplink transmission chain, it can be determined whether a switching time length is required between two adjacent uplink transmissions of the terminal, 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.

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

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

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

[0151] In the embodiments of the present disclosure, the terminal side first determines the reference frequency band pair, and further based on the reference frequency band pair, the relationship can be determined. Furthermore, the terminal directly reports this relationship to the base station. The specific implementation is the same as the process of the above steps 501 to 503, and the description is omitted here.

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

[0153] The method for determining whether a switching time length is required is the same as step 504 above and will be omitted here.

[0154] In the above embodiment, the terminal can report to the base station after determining the relevant relationship so that both the terminal side and the base station side determine whether a switching time length is required between two adjacent uplink transmissions of the terminal based on this relevant relationship, ensuring that the understanding between the terminal and the base station is consistent, improving the flexibility of network deployment and scheduling, realizing the extension of uplink transmission switching in the NR system, and having high availability.

[0155] In some alternative embodiments, the base station can send indication information to the terminal, and this indication information is used to indicate a reference frequency band pair, and the terminal determines the relevant relationship based on the reference frequency band pair.

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

[0157] In step 1101, send indication information to the terminal, and this indication information is used to indicate the reference frequency band pair.

[0158] In an embodiment of the present disclosure, the base station can send indication information to notify the terminal of a reference frequency band pair. Any group of reference frequency band pairs can include one or two of the above-mentioned multiple frequency bands, and the present disclosure does not limit this. The multiple frequency bands are frequency bands that support the terminal to perform uplink transmission switching. The total number of the multiple frequency bands may be a positive integer greater than 2, for example, 3, 4, 5... and the present disclosure does not limit this. The terminal can determine whether a switching time length is required based on the indication of the base station or the protocol agreement method.

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

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

[0161] In step 1102, based on the reference frequency band pair indicated by the indication information, determine the association.

[0162] The method for the base station side to determine the association is the same as step 602 above, and the description is omitted here.

[0163] In step 1103, based on the association, determine whether a switching time length is required between two adjacent uplink transmissions of the terminal.

[0164] The method for the base station side to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal is the same as step 603 above, and the description is omitted here.

[0165] In the above embodiment, the base station transmits the instruction information to the terminal. After the terminal determines the reference frequency band pair based on this instruction information, it further determines the association relationship. Based on this association relationship, it can be determined whether a switching time length is required between two adjacent uplink transmissions of the terminal. The base station side can also determine whether a switching time length is required in the same way, ensuring that the understanding between 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.

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

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

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

[0169] In the embodiments of the present disclosure, the base station can determine, based on the protocol agreement method, that the time domain resources occupied by any two of the plurality of frequency bands do not overlap. When the base station schedules uplink transmission or configures uplink transmission, it is necessary to ensure that the time domain resources occupied by any two of the plurality of frequency bands do not overlap. This ensures that the terminal side does not perform uplink transmission simultaneously in two or more of the plurality of frequency bands.

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

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

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

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

[0174] In Embodiment 1, assume that the terminal supports two Tx chains in hardware, that is, it supports uplink transmission on a maximum of two bands simultaneously. Assume that the terminal supports UL Tx switching on N bands, and in this embodiment, N = 4. The terminal supports, for example, the correspondence between 10 types of Tx chains and bands shown in Table 3, and the last column is the uplink transmission scenario supported by the terminal in each type of Tx chain-band correspondence. Table 3

Table 3-1

Table 3-2

[0175] Taking case1 and case7 as examples, the correspondence between the Tx chain and the band, and the transmission methods supported by each type of case will be described.

[0176] In Case1, one Tx chain of the terminal operates on band#1 and the other Tx chain operates on band#2. For a specific transmission scenario, 1p+0p+0p+0p represents that the terminal transmits the uplink using a single port on band#1 only, 0p+1p+0p+0p represents that the terminal transmits the uplink using a single port on band#2 only, and 1p+1p+0p+0p represents that the terminal transmits the uplink using a single port on band#1 and band#2 simultaneously.

[0177] In Case7, both of the two Tx chains of the terminal operate on band#1. For a specific transmission scenario, 1p+0p+0p+0p represents that the terminal transmits the uplink using a single port on band#1 only, and 2p+0p+0p+0p represents that the terminal transmits the uplink using a dual port on band#1 only.

[0178] Based on the above summarized table, for different Tx chain operating states (case1 - case10), the same transmission scenarios exist, which makes it impossible for the base station side to determine whether the terminal side needs to perform UL Tx switching, thereby affecting the scheduling strategy. Specifically, the network side cannot determine the corresponding cases of Tx chain and band in the following transmission scenarios.

Number

[0179] For different Tx chain operating states, in order to complete the hardware switching, the terminal requires a certain switching time length (switching period).

[0180] In this embodiment, in order to achieve the consistency of understanding of UL Tx switching between the terminal side and the network side, the terminal can report the association relationship between N reference frequency band pairs (band pairs) and the uplink Tx chain associated therewith.

[0181] In this embodiment, it is assumed 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, it is assumed that M = 4. It is assumed that the combination of bands that support the terminal to perform UL Tx switching is {band#1, band#2, band#3, band#4}. Specifically, the combination of bands that support UL Tx switching may be reported by the terminal or determined by other methods, and the present disclosure does not limit it in any way.

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

Table 4

[0183] When the band where the actual UL transmission is located is included within the reference band pair, no switching period is required.

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

[0185] If the frequency bands in which two adjacent uplink transmissions of the terminal are located are different and the two different frequency bands do not belong to the same reference frequency band pair, or if the frequency bands in which two adjacent uplink transmissions of the terminal are located are the same 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 has changed (for example, changed from 1 Tx chain to 2 Tx chains or vice versa), a switching period is required between two adjacent uplink transmissions of the terminal.

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

[0187] Based on the method of this embodiment, the reference band pair reported by the terminal is {band#1, band#2}, and the corresponding relationship between the Tx chain and the 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 meet the transmission cases of the reference band pair, that is, (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, assuming that, as described in Example 1, the terminal reported two reference band pairs, namely {band#1, band#2} and {band#3, band#4}. The Tx chains corresponding to the two reference band pairs reported by the terminal and the cases of uplink transmissions that can be supported simultaneously are as shown in Table 5. Table 5

Table 5

[0189] When the uplink transmission scheduled by the base station satisfies the transmission case corresponding to any one of the above reference band pairs, 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 case1 to case6, a certain switching period is required between two adjacent uplink transmissions. Other technical details are the same as those in Example 1, and the description is omitted here.

[0191] In Example 3, assuming that the terminal supports two Tx chains in hardware, that is, it supports uplink transmissions on a maximum of two bands simultaneously. Assuming that the terminal supports UL Tx switching on N bands, in this example, N = 4. The terminal supports, for example, the 10 types of correspondences between Tx chains and bands shown in Table 3, and the last column is the uplink transmission scenario supported by the terminal in each type of Tx chain-band correspondence.

[0192] Taking case1 and case7 as examples, the correspondence between the Tx chain and the band, and the transmission methods supported by each type of case will be described.

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

[0194] In Case 7, both of the two Tx chains of the terminal operate on band #1. For a specific transmission scenario, 1p+0p+0p+0p means the terminal transmits an uplink using a single port on band #1 only, and 2p+0p+0p+0p means the terminal transmits an uplink using dual ports on band #1 only.

[0195] Based on the above summarized table, for different Tx chain operating states (Case1 - Case10), the same transmission scenarios exist, which makes it impossible for the base station side to determine whether the terminal side needs to perform UL Tx switching, thus affecting the scheduling strategy. Specifically, the network side cannot determine the corresponding cases of Tx chains and bands in the following transmission scenarios.

Number

[0196] For different Tx chain operating states, in order to complete the hardware switching, the terminal requires a certain switching time (switching period).

[0197] In this embodiment, to avoid the problem that the understanding of the base station and the terminal regarding the Tx chain operating frequency band does not match, the base station instructs one or more reference band pairs to the terminal 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, it is assumed that M = 4. Assume that the combination of bands that support the terminal to perform UL Tx switching is {band#1, band#2, band#3, band#4}. Specifically, the combination of bands that support UL Tx switching may be reported by the terminal or determined by other methods, and the present disclosure does not limit it in any way.

[0198] Assume that the relationship between the reference band pair reported by the terminal and the Tx chain is Case1, that is, as shown in Table 4.

[0199] When the band where the actual UL transmission is located is included in the reference band pair, no switching period is required.

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

[0201] The frequency bands where two adjacent uplink transmissions are located are different, and the two different frequency bands do not belong to the same reference frequency band pair, or the frequency bands where 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 (for example, changes from 1 Tx chain to 2 Tx chains, or vice versa), a switching period is required between two adjacent uplink transmissions.

[0202] Based on this method, when the base station schedules the terminal to perform uplink transmission 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 relationship between the Tx chain and the 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 meet the transmission cases of the reference band pair, that is, (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 is RRC signaling or MAC CE signaling, and the present disclosure is not limited thereto.

[0204] In Embodiment 4, assume that the terminal supports two Tx chains in hardware, that is, it supports uplink transmission in a maximum of two bands simultaneously. Assume that the terminal supports UL Tx switching in N bands, and in this embodiment, N = 4. The terminal supports, for example, the correspondence between 10 types of Tx chains and bands shown in Table 3, and the last column is the uplink transmission scenario supported by the terminal in the correspondence of various types of Tx chain - band.

[0205] Taking case1 and case7 as examples, the correspondence between the Tx chain and the band, and the transmission methods supported by each type of case will be described.

[0206] In Case1, one Tx chain of the terminal operates in band#1, and the other Tx chain operates in band#2. For a specific transmission scenario, 1p + 0p + 0p + 0p means that the terminal transmits the uplink using a single port only in band#1, 0p + 1p + 0p + 0p means that the terminal transmits the uplink using a single port only in band#2, and 1p + 1p + 0p + 0p means that the terminal transmits the uplink using single ports in band#1 and band#2 simultaneously.

[0207] In Case7, both of the two Tx chains of the terminal operate in band#1. For a specific transmission scenario, 1p + 0p + 0p + 0p means that the terminal transmits the uplink using a single port only in band#1, and 2p + 0p + 0p + 0p means that the terminal transmits the uplink using a dual port only in band#1.

[0208] Based on the summary table above, in the operating states (case1 - case10) of different Tx chains, the same transmission scenario exists, which makes it impossible for the base station side to determine whether the terminal side needs to perform UL Tx switching, thereby affecting the scheduling strategy. Specifically, the network side cannot determine the corresponding cases of Tx chain and band in the following transmission scenarios.

Number

[0209] For different operating states of the Tx chain, the terminal requires a certain switching time length (switching period) to complete the hardware switching.

[0210] To avoid the inconsistency in the understanding of the terminal's Tx chain state between the base station and the terminal, the present disclosure ensures the consistency of their understanding by a method predefined in the protocol and defines the following rules in advance.

[0211] The terminal does not expect to transmit uplink transmissions simultaneously on two bands.

[0212] That is, the terminal can transmit uplink transmissions only on one of the M bands that support UL Tx switching.

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

[0214] When the frequency bands of two consecutive uplink transmissions of a terminal are the same, there is no need for a UL Tx switching period 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 regardless of the number of ports when the terminal performs uplink transmission in a specific band, as long as the band in which the terminal attempts to perform uplink transmission is different from the band where the previous adjacent uplink transmission is located, it is necessary to assume that a switching period is required between two uplink transmissions. Also, as long as the band in which the terminal attempts to perform uplink transmission is the same as the band where the previous adjacent uplink transmission is located, it is considered that no switching period is required between two uplink transmissions.

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

[0217] In the above embodiments, the terminal supports uplink transmission switching in multiple frequency bands. When the total number of multiple frequency bands is greater than 2, the terminal and the base station can determine whether a switching time length is required between two consecutive uplink transmissions of the terminal based on the same principle, ensuring that the understanding between 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.

[0218] Corresponding to the embodiments of the above application function realization method, the present disclosure further provides embodiments of an application function realization device.

[0219] Referring to FIG. 13, FIG. 13 is a block diagram of an uplink transmission apparatus shown by an exemplary embodiment, and the apparatus is applied to a terminal. When the terminal supports uplink transmission switching in a plurality of frequency bands, it is a first determination module configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal, and includes a first determination module 1301 where the total number of the plurality of frequency bands is greater than 2.

[0220] Referring to FIG. 14, FIG. 14 is a block diagram of an uplink transmission apparatus shown by an exemplary embodiment, and the apparatus is applied to a base station. When it is determined that the terminal supports uplink transmission switching in a plurality of frequency bands, it is a second determination module configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal, and includes a second determination module 1401 where the total number of the plurality of frequency bands is greater than 2.

[0221] For the embodiments of the apparatus, basically corresponding to the embodiments of the method, the relevant points may be described with reference to a part of the embodiments of the method. The embodiments of the apparatus described above are merely exemplary. The units described as the above-separated components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed in a plurality of network units. According to actual needs, some or all of the modules can be selected to achieve the purpose of the solution of the present disclosure. Those skilled in the art can understand and implement it without paying creative labor.

[0222] Accordingly, the present disclosure further provides a computer-readable storage medium storing a computer program, and the computer program executes the uplink transmission method described in any of the above for the terminal side.

[0223] Accordingly, the present disclosure further provides a computer-readable storage medium storing a computer program, and the computer program executes the uplink transmission method described in any of the above base station sides.

[0224] Accordingly, the present disclosure further provides an uplink transmission apparatus, and the apparatus includes a processor, a memory for storing instructions executable by the processor, and includes the processor is configured to execute the uplink transmission method described in any of the above terminal sides.

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

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

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

[0228] The memory 1504 is configured to store various types of data to support the operation of the device 1500. Examples of these data include instructions for any application program or method for operating the device 1500, contact data, phone book data, messages, images, videos, etc. The 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 component 1506 provides power to various components of the device 1500. The power component 1506 can include a power management system, one or more power sources, and other components related to the generation, management, and distribution of power for the device 1500.

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

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

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

[0233] The sensor component 1516 includes one or more sensors to provide state evaluations of various aspects to the device 1500. For example, the sensor component 1516 can detect the on / off state of the device 1500 and the relative positioning of components. For example, the components are 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 component of the device 1500, the presence or absence of contact between the user and the device 1500, the orientation and position of the device 1500 or acceleration / deceleration and temperature changes of the device 1500. The sensor component 1516 can also include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor component 1516 can further include an optical sensor such as a CMOS or CCD image sensor used in imaging applications. In some embodiments, the sensor component 1516 can further include an acceleration sensor, a gyro sensor, 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 a wireless network 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 identification (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-transitory machine-readable storage medium containing instructions, such as 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 uplink transmission method described above. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, or an optical data storage device.

[0237] Accordingly, 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 modifications, uses or appropriate changes of the present disclosure, and these modifications, uses or appropriate changes comply with the general principles of the present disclosure and include common general 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 applied to a terminal, comprising: When the terminal supports 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, wherein the total number of the plurality of frequency bands is greater than 2. An uplink transmission method characterized by the above.

2. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is: Based on the relationship between a reference frequency band pair and an uplink transmission chain, determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, wherein one or two of the plurality of frequency bands are included in the reference frequency band pair. The uplink transmission method according to Claim 1, characterized by the above.

3. The method further comprises: Determining the reference frequency band pair; Determining the relationship based on the reference frequency band pair; Reporting the relationship to a base station. The uplink transmission method according to Claim 2, characterized by the above.

4. The method further comprises: Receiving indication information transmitted by a base station, wherein the indication information is used to indicate the reference frequency band pair; Determining the relationship based on the reference frequency band pair indicated by the indication information. The uplink transmission method according to Claim 2, characterized by the above.

5. The step of receiving the indication information transmitted by the base station is: Receiving the indication information transmitted by the base station via radio resource control (RRC) signaling, or Receiving the indication information transmitted by the base station via media access control element (MAC CE) signaling. The uplink transmission method according to Claim 4, characterized by the above.

6. The step of determining the relationship is: When performing uplink transmission using the first frequency band included in the first reference frequency band pair, a step of 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 any one of claims 3 to 5, characterized in that.

7. The step of determining the association relationship based on the first reference frequency band pair includes: Determining that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band; and Determining that the other uplink transmission chain corresponding to the first reference frequency band pair operates in the second frequency band included in the first reference frequency band pair. The uplink transmission method according to claim 6, characterized in that.

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

9. The step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal when the frequency bands where two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair includes: When the frequency bands where two adjacent uplink transmissions of the terminal are located are the same and the same frequency band belongs to any group of the reference frequency band pairs, determining that the switching time length is not required between two adjacent uplink transmissions of the terminal, or When the frequency bands where two adjacent uplink transmissions of the terminal are located are different and the two different frequency bands belong to the same reference frequency band pair, determining that the switching time length is not required between two adjacent uplink transmissions of the terminal. The uplink transmission method according to claim 8, characterized in that.

10. Based on the relationship between the reference frequency band pair and the uplink transmission chain, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is When the frequency bands where two adjacent uplink transmissions of the terminal are located are different 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 two adjacent uplink transmissions of the terminal, or When the frequency bands where two adjacent uplink transmissions of the terminal are located are the same, the same frequency band belongs to an arbitrary group of the reference frequency band pairs, and the correspondence between the same frequency band and the uplink transmission chain changes, the step of determining that the switching time length is required between two adjacent uplink transmissions of the terminal is included, The uplink transmission method according to claim 2, characterized in that.

11. The method is When the number of uplink transmission chains corresponding to the same frequency band changes, the method further includes the step of determining that the correspondence has changed, The uplink transmission method according to claim 10, characterized in that.

12. Based on the relationship between the reference frequency band pair and the uplink transmission chain, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is When the reference frequency band pair is a plurality of groups, when the reference frequency band pair corresponding to two adjacent uplink transmissions of the terminal changes, the step of determining that the switching time length is required between two adjacent uplink transmissions of the terminal is included, The uplink transmission method according to claim 2, characterized in that.

13. The method is The method further includes the step of determining that the terminal does not expect to perform uplink transmission simultaneously in two or more of the plurality of frequency bands, The uplink transmission method according to claim 1, characterized in that.

14. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is 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, including determining that the switching time length is required between two adjacent uplink transmissions of the terminal. The uplink transmission method according to claim 13, characterized in that.

15. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is When the frequency bands of two adjacent uplink transmissions of the terminal are the same, including determining that the switching time length is not required between two adjacent uplink transmissions of the terminal. The uplink transmission method according to claim 13, characterized in that.

16. Whether the number of ports used for two adjacent uplink transmissions of the terminal is the same or different The uplink transmission method according to claim 15, characterized in that.

17. An uplink transmission method applied to a base station, 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, including the step that the total number of the plurality of frequency bands is greater than 2. The uplink transmission method, characterized in that.

18. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is Based on the relationship between the reference frequency band pair and the uplink transmission chain, determining whether a switching time length is required between two adjacent uplink transmissions of the terminal, including the step that one or two of the plurality of frequency bands are included in the reference frequency band pair. The uplink transmission method according to claim 17, characterized in that.

19. The method is Further including the step of receiving the relationship reported by the terminal. The uplink transmission method according to claim 18, characterized in that.

20. The method is A step of transmitting indication information to the terminal, wherein the indication information is used to indicate the reference frequency band pair; A step of determining the association relationship based on the reference frequency band pair indicated by the indication information; and further includes. The uplink transmission method according to claim 18, characterized in that.

21. The step of transmitting indication information to the terminal is A step of transmitting the indication information to the terminal via radio resource control (RRC) signaling, or A step of transmitting the indication information to the terminal via media access control element (MAC CE) signaling is included. The uplink transmission method according to claim 20, characterized in that.

22. The step of determining the association relationship is When the terminal performs uplink transmission using a first frequency band included in a first reference frequency band pair, a step of 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 any one of claims 19 to 21, characterized in that.

23. The step of determining the association relationship based on the first reference frequency band pair is A step of determining that one uplink transmission chain corresponding to the first reference frequency band pair operates in the first frequency band; and A 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; and includes. The uplink transmission method according to claim 22, characterized in that.

24. A step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal based on the association relationship between the reference frequency band pair and the uplink transmission chain is When the frequency bands where two adjacent uplink transmissions of the terminal are located belong to the same reference frequency band pair, a step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal is included. The uplink transmission method according to claim 18, characterized in that.

25. When 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 as follows: When the frequency bands in which two adjacent uplink transmissions of the terminal are located are the same and the same frequency band belongs to any group of the reference frequency band pairs, the step of determining that the switching time length is not required between two adjacent uplink transmissions of the terminal, or When the frequency bands in which two adjacent uplink transmissions of the terminal are located are different and the two different frequency bands 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 included. The uplink transmission method according to claim 24, characterized in that.

26. Based on the relationship between the reference frequency band pair and the uplink transmission chain, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is as follows: When the frequency bands in which two adjacent uplink transmissions of the terminal are located are different 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 two adjacent uplink transmissions of the terminal, or When the frequency bands in which two adjacent uplink transmissions of the terminal are located are the same, the same frequency band belongs to any group of the reference frequency band pairs, and the correspondence between the same frequency band and the uplink transmission chain changes, the step of determining that the switching time length is required between two adjacent uplink transmissions of the terminal is included. The uplink transmission method according to claim 18, characterized in that.

27. The method includes: When the number of uplink transmission chains corresponding to the same frequency band changes, the method further includes the step of determining that the correspondence has changed. The uplink transmission method according to claim 26, characterized in that.

28. Based on the relationship between the reference frequency band pair and the uplink transmission chain, the step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is as follows: When the reference frequency band pairs are multiple groups, if the reference frequency band pairs corresponding to two adjacent uplink transmissions of the terminal change, the method includes determining that the switching time length is required between two adjacent uplink transmissions of the terminal. The uplink transmission method according to claim 18, characterized in that.

29. The method includes further including determining that time domain resources occupied by any two of the plurality of frequency bands do not overlap. The uplink transmission method according to claim 17, characterized in that.

30. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is 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, including determining that the switching time length is required between two adjacent uplink transmissions of the terminal. The uplink transmission method according to claim 29, characterized in that.

31. The step of determining whether a switching time length is required between two adjacent uplink transmissions of the terminal is when the frequency bands of two adjacent uplink transmissions of the terminal are the same, including determining that the switching time length is not required between two adjacent uplink transmissions of the terminal. The uplink transmission method according to claim 29, characterized in that.

32. The number of ports used for two adjacent uplink transmissions of the terminal is the same or different The uplink transmission method according to claim 31, characterized in that.

33. An uplink transmission device applied to a terminal, comprising a first determination module configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal when the terminal supports uplink transmission switching in multiple frequency bands, the first determination module including a total number of the multiple frequency bands greater than 2 The uplink transmission device, characterized in that.

34. An uplink transmission apparatus applied to a base station, A second determination module configured to determine whether a switching time length is required between two adjacent uplink transmissions of the terminal when it is determined that the terminal supports uplink transmission switching in a plurality of frequency bands, the second determination module having a total number of the plurality of frequency bands greater than 2, An uplink transmission apparatus characterized by the above.

35. A computer-readable storage medium storing a computer program, the computer program executing the uplink transmission method according to any one of Claims 1 to 16, A computer-readable storage medium characterized by the above.

36. A computer-readable storage medium storing a computer program, the computer program executing the uplink transmission method according to any one of Claims 17 to 32, A computer-readable storage medium characterized by the above.

37. An uplink transmission apparatus, Including a processor and A memory for storing instructions executable by the processor, The processor is configured to execute the uplink transmission method according to any one of Claims 1 to 16, An uplink transmission apparatus characterized by the above.

38. An uplink transmission apparatus, Including a processor and A memory for storing instructions executable by the processor, The processor is configured to execute the uplink transmission method according to any one of Claims 17 to 32, An uplink transmission apparatus characterized by the above.

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