Frequency band determination method and device, terminal, base station and storage medium

Abstract

The invention provides a frequency band determination method and device, a terminal, a base station and a storage medium, and relates to the technical field of wireless communication. The frequency band determination method comprises the steps that candidate frequency bands are determined according to frequency bands involved in frequency band switching of transmitters of a terminal, the number of the transmitters is multiple, and the number of the involved frequency bands is larger than 2; and under the condition that the number of the candidate frequency bands is multiple, determining the frequency band where the switching interval is located based on a predetermined rule according to the information of the candidate frequency bands.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technology, and in particular to a frequency band determination method, device, terminal, base station and storage medium. Background Art

[0002] Super uplink, namely the terminal uplink transmitter switching (UL Tx switching) technology, has been supported in 5G (5th Generation mobile networks, 5th Generation wireless systems or 5th-Generation, fifth-generation mobile communication technology) NR (New Radio) Rel-16 (Release 16) and Rel-17, so that the uplink resources of different carriers can be fully utilized, the uplink capacity and uplink coverage of NR can be improved, and the latency can be reduced.

[0003] The terminal transmitter switches between different frequency bands, and the switching interval (uplinkswitching gap / period) required for the terminal transmitter switching can be 35us, 140us, or 210us. In Rel-16 and Rel-17, the terminal cannot perform uplink transmission on carriers of all frequency bands within the switching interval. The RRC (Radio Resource Control) information element ServingCellConfig sent by the base station to the terminal contains uplinkTxSwitchingPeriodLocation, which can be configured as TRUE or FALSE, and is used to semi-statically configure whether the switching interval is located on the carrier corresponding to the serving cell. For the dynamic switching of the terminal transmitter between two uplink frequency bands in the uplink CA (Carrier Aggregation) or SUL (Supplementary Uplink) scenario, the base station configures uplinkTxSwitchingPeriodLocation to TRUE for the carrier of one frequency band and uplinkTxSwitchingPeriodLocation to FALSE for the carrier of another frequency band.

[0004] In some application scenarios, the performance gain that can be obtained by dynamically switching the terminal transmitter by configuring the switching interval in different frequency bands is different. For example, when carrier 1 is in FDD (Frequency Division Duplexing) mode and carrier 2 is in TDD (Time Division Duplexing) mode, configuring the switching interval in carrier 1 can obtain a greater gain.

[0005] For terminals that support transmitter switching in different frequency bands, the supported uplink transmitter switching options can be reported to the base station through the terminal capability information element, where the option switchedUL (switched uplink) indicates that the terminal only supports uplink transmission on a carrier of one frequency band at the same time, and the option dualUL (dual uplink) indicates that the terminal supports uplink transmission on carriers of different frequency bands at the same time. The base station configures the switching options for dynamic switching of uplink transmitters to the terminal as switched uplink or dual uplink. Summary of the invention

[0006] One object of the present disclosure is to improve the dynamic switching capability of a terminal transmitter between frequency bands.

[0007] According to one aspect of some embodiments of the present disclosure, a frequency band determination method is proposed, comprising: determining candidate frequency bands according to frequency bands involved in the transmitter frequency band switching of a terminal, wherein there are multiple transmitters and the number of frequency bands involved is greater than 2; and in the case where there are multiple candidate frequency bands, determining the frequency band in which the switching interval is located based on a predetermined rule according to information of the candidate frequency bands.

[0008] In some embodiments, determining candidate frequency bands based on frequency bands involved in the frequency band switching of the terminal's transmitter includes: taking the involved frequency bands as candidate frequency bands; or, among the involved frequency bands, for feasible switching methods, determining frequency band pairs before and after the frequency band switching of each set of transmitters where frequency band switching occurs, and taking the frequency bands where the preset switching interval in each frequency band pair is located as candidate frequency bands.

[0009] In some embodiments, the information of the candidate frequency band includes at least one of the type of information transmission performed by the carrier in the frequency band, the duplex mode of the frequency band, a parameter of a predetermined type, and a carrier frequency of the carrier in the frequency band, wherein the parameter of the predetermined type includes one of the initial partial bandwidth for uplink transmission, the activation partial bandwidth for uplink transmission, the transmission block size of the scheduled uplink transmission, the bandwidth of the scheduled uplink transmission, and the number of resource blocks for the scheduled uplink transmission.

[0010] In some embodiments, the type of information transmission performed by the carrier in the frequency band includes: uplink information transmission carried by PUSCH (Physical Uplink Shared Channel) performed by the carrier in the frequency band; and the duplex mode includes FDD mode.

[0011] In some embodiments, determining the frequency band in which the switching interval is located based on a predetermined rule includes: in the presence of a carrier for uplink information transmission carrying PUSCH, taking the carrier with the smallest parameter of a predetermined type among the carriers for uplink information transmission carrying PUSCH in the candidate frequency band as the first candidate carrier, and determining the frequency band in which the switching interval is located based on the first candidate carrier.

[0012] In some embodiments, determining the frequency band where the switching interval is located according to the first candidate carrier includes: when the number of carriers in the first candidate carrier is 1, determining the frequency band where the first candidate carrier is located as the frequency band where the switching interval is located.

[0013] In some embodiments, determining the frequency band where the switching interval is located based on the first candidate carrier includes: when the number of carriers in the first candidate carrier is greater than 1, determining the frequency band where the carrier with the highest or lowest carrier frequency is located in the first candidate carrier as the frequency band where the switching interval is located.

[0014] In some embodiments, determining the frequency band where the switching interval is located based on a predetermined rule includes: in the absence of a carrier for uplink information transmission carrying PUSCH, determining the frequency band where the carrier with the highest or lowest carrier frequency is located among the carriers in the candidate frequency bands as the frequency band where the switching interval is located.

[0015] In some embodiments, determining the frequency band where the switching interval is located based on a predetermined rule includes: when there is a frequency band of the FDD mode, determining the frequency band where the switching interval is located according to the frequency band of the FDD mode in the candidate frequency bands.

[0016] In some embodiments, determining the frequency band where the switching interval is located according to the frequency band of the FDD mode in the candidate frequency bands includes: when the number of the frequency band of the FDD mode is 1, using the frequency band of the FDD mode as the frequency band where the switching interval is located.

[0017] In some embodiments, determining the frequency band where the switching interval is located based on the frequency band of the FDD mode in the candidate frequency bands includes: when the number of frequency bands of the FDD mode is greater than 1, determining the frequency band where the carrier with the highest or lowest carrier frequency is located in the frequency band of the FDD mode as the frequency band where the switching interval is located.

[0018] In some embodiments, determining the frequency band where the switching interval is located based on a predetermined rule includes: when there is no frequency band of the FDD mode, determining the frequency band where the carrier with the highest or lowest carrier frequency is located in the candidate frequency bands as the frequency band where the switching interval is located.

[0019] In some embodiments, determining the frequency band in which the switching interval is located based on a predetermined rule includes: in a case where there are multiple frequency bands with FDD modes or there is no frequency band with FDD mode, determining a target candidate frequency band, and determining the frequency band in which the switching interval is located among the target candidate frequency bands, wherein the target candidate frequency band includes at least one of the following: in a case where there are multiple frequency bands with FDD modes, the target candidate frequency band is a frequency band with multiple FDD modes; or in a case where there is no frequency band with FDD mode, the target candidate frequency band is a candidate frequency band.

[0020] In some embodiments, determining the frequency band in which the switching interval is located in the target candidate frequency band includes: when there is a carrier for uplink information transmission carrying PUSCH in the target candidate frequency band, and the number of carriers with the smallest parameter of a predetermined type among the carriers for uplink information transmission carrying PUSCH in the target candidate frequency band is 1, determining that the frequency band in which the carrier with the smallest parameter of a predetermined type among the carriers for uplink information transmission carrying PUSCH in the target candidate frequency band is located is the frequency band in which the switching interval is located.

[0021] In some embodiments, determining the frequency band in which the switching interval is located in the target candidate frequency band includes: when there is a carrier for uplink information transmission carrying PUSCH in the target candidate frequency band, and the number of carriers with the smallest parameters of a predetermined type among the carriers for uplink information transmission carrying PUSCH in the target candidate frequency band is greater than 1, the carrier with the smallest parameters of a predetermined type among the carriers for uplink information transmission carrying PUSCH in the target candidate frequency band is used as the second candidate carrier; and determining the frequency band in which the carrier with the highest or lowest carrier frequency is located among the second candidate carriers as the frequency band in which the switching interval is located.

[0022] In some embodiments, determining the frequency band in which the switching interval is located in the target candidate frequency band includes: when there is no carrier for uplink information transmission carried by PUSCH in the target candidate frequency band, determining the frequency band in which the carrier with the highest or lowest carrier frequency in the target candidate frequency band is located as the frequency band in which the switching interval is located.

[0023] In some embodiments, the frequency bands involved include: before and after all or part of the terminal's transmitters are switched, the uplink transmission frequency bands before and after the switching of the switched transmitters, and the uplink transmission frequency bands of the transmitters that are not switched.

[0024] According to one aspect of some embodiments of the present disclosure, a frequency band determination device is proposed, comprising: a first determination unit, configured to determine a candidate frequency band according to a frequency band involved in a transmitter frequency band switching of a terminal, wherein there are multiple transmitters and the number of frequency bands involved is greater than 2; and a second determination unit, configured to determine, when there are multiple candidate frequency bands, the frequency band in which the switching interval is located based on a predetermined rule according to information of the candidate frequency bands.

[0025] According to one aspect of some embodiments of the present disclosure, a frequency band determination device is proposed, including: a memory; and a processor coupled to the memory, wherein the processor is configured to execute any one of the above frequency band determination methods based on instructions stored in the memory.

[0026] According to one aspect of some embodiments of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored, and when the instructions are executed by a processor, the steps of any one of the frequency band determination methods described above are implemented.

[0027] According to one aspect of some embodiments of the present disclosure, a terminal is proposed, comprising: at least two sets of transmitters, configured to support uplink transmission on at least three frequency bands and to switch frequency bands between supported frequency bands; and any one of the frequency band determination devices described above, configured to determine the frequency band in which the switching interval of the terminal's transmitter frequency band switching is located.

[0028] According to one aspect of some embodiments of the present disclosure, a base station is proposed, comprising: any one of the frequency band determination devices described above, configured to determine a frequency band in which a switching interval for switching a transmitter frequency band of a terminal is located. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0030] Figure 1 The present invention is a flowchart of some embodiments of the frequency band determination method of the present invention.

[0031] Figure 2 The present invention is a flowchart of some embodiments of predetermined rules in the frequency band determination method of the present invention.

[0032] Figure 3 The present invention is a flowchart of other embodiments of the predetermined rules in the frequency band determination method of the present invention.

[0033] Figure 4 The present invention is a flowchart of some further embodiments of the predetermined rules in the frequency band determination method of the present invention.

[0034] Figure 5 It is a schematic diagram of some embodiments of the switching interval frequency band positions when one switching of two sets of transmitters of a terminal in the frequency band determination method disclosed in the present invention involves three frequency bands.

[0035] Figure 6 It is a schematic diagram of other embodiments of the switching interval frequency band position when one switching of two sets of transmitters of a terminal in the frequency band determination method disclosed in the present invention involves three frequency bands.

[0036] Figure 7 It is a schematic diagram of some embodiments of the frequency band determination device disclosed in the present invention.

[0037] Figure 8 Schematic diagrams of other embodiments of the frequency band determination device disclosed in the present invention.

[0038] Fig. 9 Schematic diagrams of some further embodiments of the frequency band determination device disclosed in the present invention.

[0039] Fig.10 Schematic diagrams of some embodiments of the terminal disclosed herein.

[0040] Fig.11 Schematic diagrams of some embodiments of the base station disclosed herein. DETAILED DESCRIPTION

[0041] The technical solution of the present disclosure is further described in detail below through the accompanying drawings and embodiments.

[0042] Rel-16 super uplink technology includes: the terminal supports two sets of transmitters, and supports uplink transmission that requires the terminal transmitter state to be dynamically switched between situation 1 and situation 2. Situation 1: one set of transmitters performs uplink transmission on carrier 1, and the other set of transmitters performs uplink transmission on carrier 2; situation 2: both sets of transmitters perform uplink transmission on carrier 2.

[0043] Rel-17 Super Uplink Enhancement technology includes: the terminal supports two sets of transmitters, and supports uplink transmission that requires both sets of transmitters of the terminal to dynamically switch between carriers in two different frequency bands. Rel-17 Super Uplink Enhancement supports NR dual-band collaborative networking, where one band has one carrier and the other band has two carriers.

[0044] The multi-carrier uplink transmission of Rel-16 and Rel-17 has restrictions on the transmitter switching mechanism of terminals that support two sets of transmitters, that is, the dynamic switching of the terminal transmitter can only be performed between the two uplink frequency bands configured by RRC signaling.

[0045] The present disclosure proposes a frequency band determination method, device, terminal, base station and storage medium to support a transmitter to dynamically switch between three or more uplink frequency bands, improve the dynamic switching capability of the transmitter between frequency bands, determine the frequency band in which the switching interval is located so that the switching interval has less impact on uplink information transmission carried by a high-priority uplink channel and uplink transmission on a frequency band with a large available bandwidth for uplink transmission or a large transmission block, maximize the throughput gain brought by terminal transmitter switching, and improve the NR uplink data rate, spectrum efficiency and capacity.

[0046] The flowcharts of some embodiments of the frequency band determination method disclosed in the present invention are as follows: Figure 1 shown.

[0047] In step S12, a candidate frequency band is determined according to the frequency band involved in the transmitter frequency band switching of the terminal. The terminal mentioned in the present disclosure is a terminal including multiple transmitters, that is, the number of transmitters is greater than or equal to 2.

[0048] In some embodiments, the frequency bands involved include: before and after all or part of the terminal's transmitters are switched, the uplink transmission frequency bands before and after the switching of the switched transmitters, and the uplink transmission frequency bands of the transmitters that have not been switched. The number of frequency bands involved is greater than 2. In some embodiments, if all transmitters of the terminal are switched, the frequency bands involved are the uplink transmission frequency bands before and after the switching of the switched transmitters; if part of the terminal's transmitters are switched, the frequency bands involved include the uplink transmission frequency bands before and after the switching of the switched transmitters, and the uplink transmission frequency bands of the transmitters that have not been switched.

[0049] In some embodiments, all involved frequency bands may be used as candidate frequency bands, so as to further determine the frequency band in which the switching interval is located among all involved frequency bands. In some embodiments, the uplink transmission frequency band before switching of the transmitter that undergoes frequency band switching among the involved frequency bands and the uplink transmission frequency band after switching may be used as candidate frequency bands, so as to avoid affecting the transmitter that does not undergo frequency band switching for the terminal with advanced capabilities.

[0050] In some embodiments, candidate frequency bands can be further screened based on the frequency bands involved. For example, among the frequency bands involved, for feasible switching methods, the frequency band pairs before and after the frequency band switching of each set of transmitters where the frequency band switching occurs are determined, and the frequency band where the switching interval preset in each frequency band pair is located (for example, the base station configures the frequency band where the switching interval preset in each frequency band pair is located to the terminal through RRC signaling) is used as a candidate frequency band. This can be compatible with the method of determining the frequency band where the switching interval is located according to the frequency band where the switching interval preset in the switched frequency band pair is located (configured by uplinkTxSwitchingPeriodLocation) when the Rel-16 and Rel-17 terminal transmitters switch between two frequency bands, making full use of the preset parameters for the frequency band pairs and reducing the amount of data for subsequent processing.

[0051] Taking the case where a switching of two sets of transmitters of a terminal involves three frequency bands as an example, some embodiments of the frequency bands involved in the frequency band switching of the transmitter of the terminal and the determined candidate frequency bands are as follows.

[0052] In some embodiments, before switching, the transmitter status is that frequency band A and frequency band B each have one set of transmitters, and after switching, the transmitter status is that frequency band C has two sets of transmitters. In this switching, both sets of transmitters are switched, and the involved frequency bands include frequency bands A, B, and C. In some embodiments, the candidate frequency bands include all involved frequency bands A, B, and C. For the switching of the transmitter between frequency band A and frequency band C, the switching interval is configured to be located in the first frequency band, and for the switching of the transmitter between frequency band B and frequency band C, the switching interval is configured to be located in the second frequency band. In some embodiments, the candidate frequency bands include the first frequency band and the second frequency band. Figure 5 As shown in the first transmitter switching and the third transmitter switching, the terminal transmitter can dynamically switch between FDD band A, FDD band B, and TDD band C. The carrier spacing of the FDD band is 15kHz, and the carrier spacing of the TDD band is 30kHz. The uplink and downlink time slots included in one cycle of the TDD band are DDDSUDDSUU, where D represents the downlink time slot, U represents the uplink time slot, and S represents the time slot containing downlink (D) symbols, uplink (U) symbols, and protection (G) symbols. Figure 5 An example is shown in which the switching interval is located at frequency band A and frequency band C respectively, in which the switching interval corresponds to the position of the TDD frequency band guard (G) symbol of frequency band C. In the present disclosure, the guard (G) symbol may also be a flexible symbol.

[0053] In some embodiments, before switching, the transmitter state is that frequency band A has 2 sets of transmitters, and after switching, the transmitter state is that frequency band B and frequency band C each have one set of transmitters, then both sets of transmitters are switched, and the involved frequency bands include frequency bands A, B, and C. In some embodiments, the candidate frequency bands include all involved frequency bands A, B, and C. For the switching of the transmitter between frequency band A and frequency band B, the switching interval is configured to be located in the first frequency band, and for the switching of the transmitter between frequency band A and frequency band C, the switching interval is configured to be located in the second frequency band, then in some embodiments, the candidate frequency bands include the first frequency band and the second frequency band. Figure 5 As shown in the second and fourth switching, there are two sets of transmitters in band C before the switching, and there is one set of transmitters in bands A and B respectively after the switching. Figure 5 An example is shown in which the switching interval is located in band A and band C. In the example, when the switching interval is located in band A, it corresponds to the position of the downlink (D) symbol of the TDD band of band C, and uplink transmission cannot be performed at the corresponding positions of bands A and B, but it does not affect the uplink transmission before the switching of band C; when the switching interval is located in band C, it is located at the position of the uplink (U) symbol of the CTDD band, which affects the uplink transmission before the switching of band C.

[0054] In some embodiments, before switching, the transmitter state is that frequency band A and frequency band B each have a set of transmitters, and after switching, the transmitter state is that frequency band B and frequency band C each have a set of transmitters. The possible switching method only includes switching a set of transmitters in frequency band A to frequency band C, as shown in the attached figure. Figure 6 As shown in the left figure, the involved frequency bands include frequency bands A, B and C. In some embodiments, the candidate frequency bands include all involved frequency bands A, B and C. In some embodiments, the candidate frequency bands include the uplink transmission frequency band A before the switching of the switched transmitter and the uplink transmission frequency band C after the switching. If the switching interval of the switching configuration of the transmitter between frequency bands A and C is located in the first frequency band, then in some embodiments, the candidate frequency band includes the first frequency band. Figure 6 The carrier spacing of the FDD band is 15kHz, and the carrier spacing of the TDD band is 30kHz. The time slots included in one cycle of the TDD band are DDDSUDDSUU, where D represents the downlink time slot, U represents the uplink time slot, and S represents the time slot containing the downlink (D) symbol, the uplink (U) symbol, and the protection (G) symbol. Figure 6 For the TDD band, a time slot length of 5 time slots is plotted, corresponding to 2.5 time slots for the FDD band. Figure 6 The left part shows an example where the switching interval is located in frequency band A.

[0055] In some embodiments, before switching, the transmitter status is that frequency band A and frequency band B each have a set of transmitters, and after switching, the transmitter status is that frequency band B and frequency band C each have a set of transmitters, and the involved frequency bands include frequency bands A, B, and C. The possible switching mode only includes switching a set of transmitters in frequency band A to frequency band B, and switching a set of transmitters in frequency band B to frequency band C, as shown in the attached figure. Figure 6 As shown in the figure on the right. In some embodiments, the candidate frequency bands include all involved frequency bands A, B and C. For the switching interval of the switching configuration of the transmitter between frequency band A and frequency band B is located in the first frequency band, and the switching interval of the switching configuration between frequency band B and frequency band C is located in the second frequency band, then in some embodiments, the candidate frequency bands include the first frequency band and the second frequency band.

[0056] In some embodiments, before switching, the transmitter status is that frequency band A and frequency band B each have a set of transmitters, and after switching, the transmitter status is that frequency band B and frequency band C each have a set of transmitters, and the involved frequency bands include frequency bands A, B, and C. A possible switching method is to switch a set of transmitters in frequency band A to frequency band C, as shown in the attached figure. Figure 6 As shown in the figure on the left; or it may be that a set of transmitters in band A is switched to band B, and a set of transmitters in band B is switched to band C, as shown in the figure on the left. Figure 6As shown in the figure on the right. In some embodiments, the candidate frequency bands include all involved frequency bands A, B and C. If the switching intervals of the switching configuration of the transmitter between frequency band A and frequency band C, frequency band A and frequency band B, and frequency band B and frequency band C are respectively located in the first frequency band, the second frequency band, and the third frequency band, then in some embodiments, the candidate frequency bands include the first frequency band, the second frequency band, and the third frequency band.

[0057] Take the example of a switch of two sets of transmitters of a terminal involving four frequency bands.

[0058] In some embodiments, before switching, the transmitter state is that there is a set of transmitters in frequency band A and frequency band B respectively, and after switching, the transmitter state is that there is a set of transmitters in frequency band C and frequency band D respectively, and the involved frequency bands include frequency bands A, B, C and D. In some embodiments, the candidate frequency bands include all involved frequency bands A, B, C and D. Possible switching modes are that a set of transmitters in frequency band A is switched to frequency band C, and a set of transmitters in frequency band B is switched to frequency band D, or that a set of transmitters in frequency band A is switched to frequency band D, and a set of transmitters in frequency band B is switched to frequency band C. For the switching intervals of the transmitters between frequency band A and frequency band C, frequency band B and frequency band D, frequency band A and frequency band D, and frequency band B and frequency band C, they are respectively located in the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band. In some embodiments, the candidate frequency bands are the first, second, third and fourth frequency bands.

[0059] The data in the above examples are merely feasible embodiments and do not constitute an improper limitation to the present disclosure.

[0060] In step S14, when there are multiple candidate frequency bands, the frequency band where the switching interval is located is determined based on information of the candidate frequency bands and a predetermined rule.

[0061] In some embodiments, the information of the candidate frequency band includes at least one of the type of information transmission performed by the carrier in the frequency band, the duplex mode of the frequency band, a parameter of a predetermined type, and a carrier frequency of the carrier in the frequency band, wherein the parameter of the predetermined type includes one of the initial partial bandwidth for uplink transmission, the activation partial bandwidth for uplink transmission, the transmission block size of the scheduled uplink transmission, the bandwidth of the scheduled uplink transmission, and the number of resource blocks for the scheduled uplink transmission.

[0062] In some embodiments, the type of information transmission performed by the carrier in the frequency band includes: the carrier in the frequency band performs uplink information transmission carried by a physical uplink shared channel PUSCH; and the duplex mode includes a frequency division duplex FDD mode.

[0063] Based on the method in the embodiment shown above, when a switching of more than two sets of transmitters of the terminal involves more than two frequency bands, a candidate frequency band can be selected based on the frequency bands involved, and then the frequency band where the switching interval is located is determined according to the information of the candidate frequency band, thereby solving the problem of determining the frequency band where the switching interval of multiple sets of transmitters of the terminal dynamically switches between more than two uplink frequency bands, improving the dynamic switching capability of transmitters between frequency bands in the case of multiple transmitters, and the frequency band where the switching interval is located makes the switching interval have less impact on the uplink information transmission carried by the high-priority uplink channel and the uplink transmission on the frequency band with a large available bandwidth or a large transmission block, thereby maximizing the throughput gain brought by the terminal transmitter switching and improving the NR uplink data rate, spectrum efficiency and capacity.

[0064] In some embodiments, the information of the candidate frequency band includes the type of information transmission performed by the carrier in the frequency band and a parameter of a predetermined type. In the above step S14, if there is a carrier for uplink information transmission carried by PUSCH in the candidate frequency band, the carrier with the smallest parameter of the predetermined type among the carriers for uplink information transmission carried by PUSCH in the candidate frequency band is taken as the first candidate carrier, and the frequency band where the switching interval is located is determined based on the first candidate carrier, wherein the parameter of the predetermined type includes one of the initial partial bandwidth for uplink transmission, the activation partial bandwidth for uplink transmission, the transmission block size of the scheduled uplink transmission, the bandwidth of the scheduled uplink transmission, and the number of resource blocks of the scheduled uplink transmission.

[0065] Through such a method, a carrier for uplink information transmission carried by PUSCH can be selected in the candidate frequency band, and then the frequency band in which the switching interval is located can be further determined in the selected carrier according to a predetermined type of parameter, thereby facilitating the switching interval to have less impact on uplink information transmission carried by other high-priority uplink channels and uplink transmission on frequency bands with larger available bandwidth or larger transmission blocks for uplink transmission, thereby achieving better performance.

[0066] In some embodiments, the information of the candidate frequency band includes the type of information transmission performed by the carrier in the frequency band, the parameters of the predetermined type, and the carrier frequency of the carrier in the frequency band. In the case where the number of carriers in the above-mentioned first candidate carrier is 1, the frequency band in which the first candidate carrier is located is determined to be the frequency band in which the switching interval is located; in the case where the number of carriers in the first candidate carrier is greater than 1, the frequency band in which the carrier with the highest or lowest carrier frequency is located in the first candidate carrier is determined as the frequency band in which the switching interval is located. Through such a method, when the number of carriers with the smallest parameters of the predetermined type in the carriers for uplink information transmission carried by PUSCH is one or more, the frequency band in which the unique switching interval is located can be determined, thereby improving the integrity and reliability of the processing logic.

[0067] In some embodiments, if there is no carrier for uplink information transmission carried by PUSCH in the candidate frequency band, the frequency band where the carrier with the highest or lowest carrier frequency is located is determined among the carriers in the candidate frequency band as the frequency band where the switching interval is located. This can provide an alternative solution in the case where there is no carrier for uplink information transmission carried by PUSCH, and improve the integrity and reliability of the processing logic.

[0068] In some embodiments, the information of the candidate frequency band includes the type of information transmission performed by the carrier in the frequency band, the parameters of the predetermined type, and the carrier frequency of the carrier in the frequency band. Figure 2 shown.

[0069] In step 241, it is determined whether there is a carrier for uplink information transmission carried by PUSCH in the candidate frequency band. If there is a carrier for uplink information transmission carried by PUSCH in the candidate frequency band, step 243 is executed; if there is no carrier for uplink information transmission carried by PUSCH in the candidate frequency band, step 242 is executed.

[0070] In step 242, the frequency band in which the carrier with the highest or lowest carrier frequency is located is determined among the carriers in the candidate frequency bands as the frequency band in which the switching interval is located.

[0071] In step 243, a carrier having a smallest parameter of a predetermined type among carriers for uplink information transmission carried by a PUSCH in the candidate frequency band is selected as a first candidate carrier.

[0072] In step 244, it is determined whether the number of carriers in the first candidate carrier is 1. If the number of carriers in the first candidate carrier is 1, step 245 is executed; if the number of carriers in the first candidate carrier is greater than 1, step 246 is executed.

[0073] In step 245, it is determined that the frequency band where the first candidate carrier is located is the frequency band where the switching interval is located.

[0074] In step 246, the frequency band in which the carrier with the highest or lowest carrier frequency is located is determined among the first candidate carriers as the frequency band in which the switching interval is located.

[0075] Through the method in the embodiment shown above, the carrier for uplink information transmission carried by PUSCH can be preferentially selected from the candidate frequency bands; the frequency band where the switching interval is located is further determined according to the parameters of the predetermined type in the selected carrier; on the basis of the carrier selected based on the parameters of the predetermined type, the frequency band where the carrier with the highest or lowest carrier frequency is located is further determined as the frequency band where the switching interval is located, thereby improving the completeness of the predetermined rule processing logic and the reliability of determining the frequency band where the switching interval is located in the frequency band determination method; and it helps to make the switching interval have less impact on the uplink information transmission carried by the uplink channel with a higher priority than PUSCH, and the uplink transmission on the frequency band with a larger available bandwidth or a larger transmission block for the uplink transmission, thereby maximizing the throughput gain brought by the terminal transmitter switching, and improving the NR uplink data rate, spectrum utilization and uplink capacity.

[0076] In some embodiments, the information of the candidate frequency band includes the duplex mode of the frequency band. In the above step S14, the frequency band where the switching interval is located can also be determined according to the mode in which the carrier operates. For example, in the case where there is a frequency band of FDD mode, the frequency band where the switching interval is located is determined in the frequency band of FDD mode of the candidate frequency band. Compared with determining the frequency band where the switching interval is located in the frequency band where the carrier of TDD mode is located, since the frequency band of FDD mode is usually smaller than the bandwidth of the frequency band of TDD mode, such a method is conducive to making the switching interval have less impact on the uplink transmission on the frequency band with larger available bandwidth for uplink transmission, and obtaining greater gain.

[0077] In some embodiments, the information of the candidate frequency band includes the duplex mode of the frequency band and the carrier frequency of the carrier in the frequency band. If the candidate frequency band includes only one frequency band in the FDD mode, the frequency band in the FDD mode is used as the frequency band where the switching interval is located; if the candidate frequency band includes multiple frequency bands in the FDD mode, the frequency band where the carrier with the highest or lowest carrier frequency is located is determined in the frequency band of the FDD mode as the frequency band where the switching interval is located. Through such a method, when the number of frequency bands in the FDD mode is one or more, the frequency band where the unique switching interval is located can be determined, thereby improving the integrity and reliability of the processing logic.

[0078] In some embodiments, if there is no frequency band of the FDD mode in the candidate frequency bands, the frequency band where the carrier with the highest or lowest carrier frequency is located is determined in the candidate frequency bands as the frequency band where the switching interval is located. This provides an alternative solution in the case where there is no frequency band of the FDD mode, and improves the integrity and reliability of the processing logic.

[0079] In some embodiments, the information of the candidate frequency band includes the duplex mode of the frequency band and the carrier frequency of the carrier in the frequency band. Figure 3 shown.

[0080] In step 341, it is determined whether there is a frequency band of the FDD mode in the candidate frequency bands. If there is a frequency band of the FDD mode, step 343 is executed; if there is no frequency band of the FDD mode, step 342 is executed.

[0081] In step 342, the frequency band where the carrier with the highest or lowest carrier frequency is located is determined in the candidate frequency bands as the frequency band where the switching interval is located.

[0082] In step 343 , it is determined whether the number of frequency bands in the FDD mode is 1. If the number of frequency bands in the FDD mode is 1, step 344 is executed; if the number of frequency bands in the FDD mode is greater than 1, step 345 is executed.

[0083] In step 344, the frequency band of the FDD mode is used as the frequency band where the switching interval is located.

[0084] In step 345, the frequency band where the carrier with the highest or lowest carrier frequency is located is determined in the frequency band of the FDD mode as the frequency band where the switching interval is located.

[0085] Through the method in the embodiment shown above, the frequency band of the FDD mode can be preferentially selected from the candidate frequency bands; the frequency band where the carrier with the highest or lowest carrier frequency is located is preferentially selected as the frequency band where the switching interval is located, so as to improve the completeness of the predetermined rule processing logic and the reliability of determining the frequency band where the switching interval is located in the frequency band determination method on the one hand; and it helps to make the switching interval correspond to the TDD protection symbol or the downlink symbol, so that the switching interval has less impact on the uplink transmission on the frequency band with a larger available bandwidth for uplink transmission, maximize the throughput gain brought by the terminal transmitter switching, and improve the NR uplink data rate, spectrum utilization and uplink capacity.

[0086] In some embodiments, the information of the candidate frequency band includes the duplex mode of the frequency band. In the above step S14, it can be first determined whether there is a unique FDD mode frequency band in the candidate frequency band. If there is a unique FDD mode frequency band in the candidate frequency band, the FDD mode frequency band is used as the frequency band where the switching interval is located, which helps to make the switching interval correspond to the TDD protection symbol or the downlink symbol, so that the switching interval has less impact on the uplink transmission on the frequency band with a larger available bandwidth for uplink transmission, and obtains a greater gain. If there are multiple FDD mode frequency bands in the candidate frequency band, or there is no FDD mode frequency band, it is necessary to first determine the target candidate frequency band in the candidate frequency band, and then determine the frequency band where the switching interval is located in the target candidate frequency band. In some embodiments, if there are multiple FDD mode frequency bands, the target candidate frequency band is all the FDD mode frequency bands in the candidate frequency band; if there is no FDD mode frequency band, the target candidate frequency band is all the candidate frequency bands. Through such a method, the case where there is only one frequency band of the FDD mode can be screened out first, and in other cases, further judgment can be made based on whether the frequency band of the FDD mode is included. When the number of frequency bands of the FDD mode is one or more, or when there is no frequency band of the FDD mode, the frequency band where the unique switching interval is located can be determined, thereby improving the integrity and reliability of the processing logic.

[0087] In some embodiments, the information of the candidate frequency band includes the type of information transmission performed by the carrier in the frequency band, the duplex mode of the frequency band, and parameters of a predetermined type. On the basis of determining the target candidate frequency band based on the method mentioned above, it can be further determined whether there is a carrier for uplink information transmission carried by PUSCH in the target candidate frequency band. In the case that there is a carrier for uplink information transmission carried by PUSCH, the frequency band in which the carrier with the smallest parameter of the predetermined type is located is selected as the frequency band in which the switching interval is located, which is conducive to making the switching interval have less impact on uplink information transmission carried by other high-priority uplink channels, uplink transmission on frequency bands with larger available bandwidth or larger transmission blocks, and obtaining better performance.

[0088] In some embodiments, the information of the candidate frequency band includes the type of information transmission performed by the carrier in the frequency band, the duplex mode of the frequency band, the parameters of the predetermined type, and the carrier frequency of the carrier in the frequency band. If the number of carriers with the smallest parameters of the predetermined type is 1, the frequency band in which the carrier is located is used as the frequency band in which the switching interval is located; if the number of carriers with the smallest parameters of the predetermined type is greater than 1, all carriers with the smallest parameters of the predetermined type among the carriers performing uplink information transmission on the PUSCH in the target candidate frequency band are used as the second candidate carriers, and then the frequency band in which the carrier with the highest or lowest carrier frequency is located is determined in the second candidate carrier as the frequency band in which the switching interval is located. This method can improve the integrity and reliability of the processing logic.

[0089] In some embodiments, when there is no carrier for uplink information transmission carrying PUSCH in the target candidate frequency band, the frequency band in which the carrier with the highest or lowest carrier frequency in the target candidate frequency band is located is determined as the frequency band in which the switching interval is located, thereby providing an alternative solution in the absence of a carrier for uplink information transmission carrying PUSCH, thereby improving the integrity and reliability of the processing logic.

[0090] In some embodiments, the information of the candidate frequency band includes the type of information transmission performed by the carrier in the frequency band, the duplex mode of the frequency band, the parameters of the predetermined type, and the carrier frequency of the carrier in the frequency band. Figure 4 shown.

[0091] In step 441, it is determined whether there are multiple frequency bands of the FDD mode in the candidate frequency bands. If there are multiple frequency bands of the FDD mode, step 442 is executed; if there are no multiple frequency bands of the FDD mode, step 443 is executed.

[0092] In step 442 , it is determined that the target candidate frequency bands are multiple FDD mode frequency bands, and then step 446 is executed.

[0093] In step 443, it is determined whether there is no frequency band of the FDD mode in the candidate frequency bands. If there is no frequency band of the FDD mode, step 445 is executed; otherwise, there is only one frequency band of the FDD mode, and step 444 is executed.

[0094] In step 444, the frequency band of the FDD mode is used as the frequency band where the switching interval is located, and the process ends.

[0095] In step 445 , the target candidate frequency band is determined to be a candidate frequency band, and step 446 is executed.

[0096] In step 446, it is determined whether there is a carrier for uplink information transmission carried by PUSCH in the target candidate frequency band. If there is a carrier for uplink information transmission carried by PUSCH, step 448 is executed; if there is no carrier for uplink information transmission carried by PUSCH, step 447 is executed.

[0097] In step 447, the frequency band in which the carrier with the highest or lowest carrier frequency in the target candidate frequency band is located is determined as the frequency band in which the switching interval is located.

[0098] In step 448, it is determined whether the number of carriers with the smallest parameter of the predetermined type among the carriers for uplink information transmission carried by the PUSCH in the target candidate frequency band is 1. If the number of carriers with the smallest parameter of the predetermined type is 1, step 449 is executed; if the number of carriers with the smallest parameter of the predetermined type is greater than 1, step 450 is executed.

[0099] In step 449, it is determined that the frequency band in which the carrier with the smallest parameter of the predetermined type among the carriers for uplink information transmission carried by PUSCH in the target candidate frequency band is located is the frequency band in which the switching interval is located, and the process ends.

[0100] In step 450 , a carrier with the smallest parameter of a predetermined type among carriers for uplink information transmission carried by PUSCH in the target candidate frequency band is selected as a second candidate carrier, and then step 451 is executed.

[0101] In step 451, a frequency band in which a carrier with the highest or lowest carrier frequency is located is determined among the second candidate carriers as the frequency band in which the switching interval is located.

[0102] Through such a method, the frequency band of the FDD mode can be preferentially selected as the frequency band where the switching interval is located, which helps to make the switching interval correspond to the TDD protection symbol or the downlink symbol, so that the switching interval has less impact on the uplink transmission on the frequency band with a larger available bandwidth for uplink transmission, and obtains a greater gain; select the carrier for uplink information transmission carried by PUSCH, and then further determine the frequency band where the switching interval is located according to a predetermined type of parameter in the selected carrier, so as to make the switching interval have less impact on the uplink information transmission carried by other high-priority uplink channels, and the uplink transmission on the frequency band with a larger available bandwidth for uplink transmission or a larger transmission block, and obtain better performance; provide an alternative solution when there is no carrier for uplink information transmission carried by PUSCH, and improve the integrity and reliability of the processing logic; thereby maximizing the throughput gain brought by the terminal transmitter switching, and improving the NR uplink data rate, spectrum utilization and uplink capacity.

[0103] Schematic diagrams of some embodiments of the frequency band determination device disclosed in the present invention are as follows Figure 7 shown.

[0104] The first determination unit 701 can determine the candidate frequency bands according to the frequency bands involved in the frequency band switching of the terminal's transmitter. The terminal is a terminal including multiple transmitters, that is, the number of transmitters is greater than or equal to 2. In some embodiments, the frequency bands involved include: before and after all or part of the transmitters of the terminal are switched, the uplink transmission frequency bands before the switching of the switched transmitters and the uplink transmission frequency bands after the switching, and the uplink transmission frequency bands of the transmitters that have not been switched. The number of frequency bands involved is greater than 2. In some embodiments, if all transmitters of the terminal are switched, the frequency bands involved are the uplink transmission frequency bands before the switching of the switched transmitters and the uplink transmission frequency bands after the switching; if part of the transmitters of the terminal are switched, the frequency bands involved include the uplink transmission frequency bands before the switching of the switched transmitters and the uplink transmission frequency bands after the switching, and the uplink transmission frequency bands of the transmitters that have not been switched.

[0105] In some embodiments, all involved frequency bands may be used as candidate frequency bands, so as to further determine the frequency band in which the switching interval is located among all involved frequency bands. In some embodiments, the uplink transmission frequency band before switching of the transmitter that undergoes frequency band switching among the involved frequency bands and the uplink transmission frequency band after switching may be used as candidate frequency bands, so as to avoid affecting the transmitter that does not undergo frequency band switching for the terminal with advanced capabilities.

[0106] In some embodiments, candidate frequency bands can be further screened based on the frequency bands involved. For example, among the frequency bands involved, for feasible switching methods, the frequency band pairs before and after the frequency band switching of each set of transmitters where the frequency band switching occurs are determined, and the frequency bands where the preset switching intervals in each frequency band pair are located are taken as candidate frequency bands, thereby making full use of the preset parameters for the frequency band pairs and reducing the amount of data for subsequent processing.

[0107] The second determination unit 702 can determine the frequency band in which the switching interval is located based on a predetermined rule according to the information of the candidate frequency bands when there are multiple candidate frequency bands. In some embodiments, the information of the candidate frequency band includes at least one of the type of information transmission performed by the carrier in the frequency band, the duplex mode of the frequency band, a parameter of a predetermined type, and a carrier frequency of the carrier in the frequency band, wherein the parameter of the predetermined type includes one of the initial partial bandwidth for uplink transmission, the activation partial bandwidth for uplink transmission, the transmission block size of the scheduled uplink transmission, the bandwidth of the scheduled uplink transmission, and the number of resource blocks for the scheduled uplink transmission. In some embodiments, the second determination unit 702 can determine the frequency band in which the switching interval is located based on the information of the candidate frequency bands and the predetermined rule. Figure 2 , 3 , 4. Execute any one of the methods.

[0108] Such a device can select candidate frequency bands based on the frequency bands involved when a switching of more than two sets of transmitters of the terminal involves more than two frequency bands, and then determine the frequency band where the switching interval is located according to the information of the candidate frequency bands, thereby solving the problem of determining the frequency band where the switching interval of multiple sets of transmitters of the terminal dynamically switches between more than two uplink frequency bands, improving the dynamic switching capability of the terminal transmitter between frequency bands, and the frequency band where the switching interval is located makes the switching interval have less impact on the uplink information transmission carried by the high-priority uplink channel and the uplink transmission on the frequency band with a large available bandwidth or a large transmission block, thereby maximizing the throughput gain brought by the terminal transmitter switching and improving the NR uplink data rate, spectrum efficiency and capacity.

[0109] A structural diagram of an embodiment of a frequency band determination device disclosed in the present invention is shown in FIG. Figure 8 As shown. The frequency band determination device includes a memory 801 and a processor 802. Wherein: the memory 801 can be a disk, a flash memory or any other non-volatile storage medium. The memory is used to store the instructions in the corresponding embodiment of the frequency band determination method mentioned above. The processor 802 is coupled to the memory 801 and can be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 802 is used to execute the instructions stored in the memory, which can improve the dynamic switching capability of the terminal transmitter between frequency bands, and the determined switching interval is located in a frequency band so that the switching interval has less impact on the uplink information transmission carried by the high-priority uplink channel, the uplink transmission on the frequency band with a large available bandwidth or a large transmission block, maximizes the throughput gain brought by the terminal transmitter switching, and improves the NR uplink data rate, spectrum efficiency and capacity.

[0110] In one embodiment, it is also possible to Fig. 9 As shown, the frequency band determination device 900 includes a memory 901 and a processor 902. The processor 902 is coupled to the memory 901 via a BUS bus 903. The frequency band determination device 900 can also be connected to an external storage device 905 via a storage interface 904 to call external data, and can also be connected to a network or another computer system (not shown) via a network interface 906. No further detailed description will be given here.

[0111] In this embodiment, by storing data instructions in a memory and then processing the instructions through a processor, the dynamic switching capability of the transmitter between frequency bands can be improved, and the frequency band in which the switching interval is determined makes the switching interval have less impact on uplink information transmission carried by a high-priority uplink channel, uplink transmission on a frequency band with a large available bandwidth or a large transmission block, thereby maximizing the throughput gain brought by terminal transmitter switching and improving the NR uplink data rate, spectrum efficiency and capacity.

[0112] In another embodiment, a computer-readable storage medium stores thereon computer program instructions, which, when executed by a processor, implement the steps of the method in the corresponding embodiment of the frequency band determination method. Those skilled in the art should understand that the embodiments of the present disclosure may be provided as methods, devices, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transitory storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0113] Schematic diagrams of some embodiments of the terminal disclosed in the present invention are as follows Fig.10 shown.

[0114] The terminal includes transmitters 1011-101n, where n is a positive integer greater than 1. The transmitter of the terminal supports uplink transmission on at least three frequency bands and performs frequency band switching between supported frequency bands.

[0115] The frequency band determining device 1001 may be any one of the frequency band determining devices mentioned above, and may determine the frequency band in which the switching interval of the frequency band switching of the terminal's transmitter is located according to any one of the frequency band determining methods mentioned above.

[0116] Such a terminal solves the problem of determining the frequency band in which the switching interval for dynamic switching of multiple transmitters between more than two uplink frequency bands is located, thereby improving the dynamic switching capability of transmitters between frequency bands. The determined switching interval is located in a frequency band in which the switching interval has less impact on uplink information transmission carried by high-priority uplink channels, uplink transmission on frequency bands with larger available bandwidth or larger transmission blocks, thereby maximizing the throughput gain brought by terminal transmitter switching and improving NR uplink data rate, spectrum efficiency and capacity.

[0117] Schematic diagrams of some embodiments of the base station 1100 of the present disclosure are as follows Fig.11 shown.

[0118] The base station includes any one of the frequency band determining devices 1101 mentioned above, and is capable of determining the frequency band in which the switching interval of the frequency band switching of the transmitter of the terminal is located.

[0119] Such a base station solves the problem of determining the frequency band in which the switching interval for a terminal that contains multiple sets of transmitters and dynamically switches between more than two uplink frequency bands is located, thereby improving the dynamic switching capability of the transmitter between frequency bands. The frequency band in which the determined switching interval is located makes the switching interval have less impact on the uplink information transmission carried by high-priority uplink channels, the uplink transmission on frequency bands with large available bandwidth or large transmission blocks, thereby maximizing the throughput gain brought by the terminal transmitter switching and improving the NR uplink data rate, spectrum efficiency and capacity.

[0120] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0121] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0122] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0123] So far, the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0124] The method and apparatus of the present disclosure may be implemented in many ways. For example, the method and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above, unless otherwise specifically stated. In addition, in some embodiments, the present disclosure may also be implemented as a program recorded in a recording medium, which includes machine-readable instructions for implementing the method according to the present disclosure. Therefore, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

[0125] It should be noted that the terms "first", "second", etc. in the specification, claims, and drawings of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present disclosure, which should be included in the scope of the technical solution for protection of the present disclosure.

Claims

1. A method for determining a frequency band, comprising: Determining a candidate frequency band according to a frequency band involved in frequency band switching of a transmitter of the terminal, wherein there are multiple transmitters and the number of the involved frequency bands is greater than 2; and In the case that there are multiple candidate frequency bands, the frequency band in which the switching interval is located is determined based on information of the candidate frequency bands and a predetermined rule.

2. The method according to claim 1, wherein: The determining of the candidate frequency band according to the frequency band involved in the frequency band switching of the transmitter of the terminal includes: using the involved frequency band as the candidate frequency band; or In the involved frequency bands, for feasible switching modes, the frequency band pairs before and after the frequency band switching of each set of transmitters where the frequency band switching occurs are determined, and the frequency band where the preset switching interval in each of the frequency band pairs is located is used as the candidate frequency band.

3. The method according to claim 1, wherein: The information of the candidate frequency band includes at least one of the information transmission type of the carrier in the frequency band, the duplex mode of the frequency band, a parameter of a predetermined type, and the carrier frequency of the carrier in the frequency band, The predetermined type of parameter includes one of an initial partial bandwidth for uplink transmission, an activated partial bandwidth for uplink transmission, a transmission block size of scheduled uplink transmission, a bandwidth of scheduled uplink transmission, and a number of resource blocks of scheduled uplink transmission.

4. The method according to claim 3, wherein: The type of information transmission performed by the carrier in the frequency band includes: uplink information transmission carried by the carrier in the frequency band on a physical uplink shared channel PUSCH; and The duplex mode includes a frequency division duplex FDD mode.

5. The method according to any one of claims 1 to 4, wherein: Determining the frequency band where the switching interval is located based on a predetermined rule includes: In the case that there is a carrier for uplink information transmission carried by PUSCH, a carrier with a smallest parameter of a predetermined type among the carriers for uplink information transmission carried by PUSCH in the candidate frequency band is taken as a first candidate carrier, and the frequency band where the switching interval is located is determined according to the first candidate carrier.

6. The method according to claim 5, wherein: The determining, according to the first candidate carrier, the frequency band where the switching interval is located comprises: When the number of carriers in the first candidate carrier is 1, it is determined that the frequency band in which the first candidate carrier is located is the frequency band in which the switching interval is located.

7. The method according to claim 5, wherein: The determining, according to the first candidate carrier, the frequency band where the switching interval is located comprises: When the number of carriers in the first candidate carrier is greater than 1, a frequency band in which a carrier with the highest or lowest carrier frequency is located in the first candidate carrier is determined as the frequency band in which the switching interval is located.

8. The method according to any one of claims 1 to 4, wherein: Determining the frequency band where the switching interval is located based on a predetermined rule includes: In the case that there is no carrier for uplink information transmission carried by the PUSCH, a frequency band in which a carrier with the highest or lowest carrier frequency is located is determined among the carriers in the candidate frequency bands as the frequency band in which the switching interval is located.

9. The method according to any one of claims 1 to 4, wherein: Determining the frequency band where the switching interval is located based on a predetermined rule includes: In the case that there is a frequency band of the FDD mode, the frequency band where the switching interval is located is determined according to the frequency band of the FDD mode in the candidate frequency bands.

10. The method according to claim 9, wherein: The determining the frequency band where the switching interval is located according to the frequency band of the FDD mode in the candidate frequency bands includes: When the number of the frequency bands in the FDD mode is 1, the frequency band in the FDD mode is used as the frequency band where the switching interval is located.

11. The method according to claim 9, wherein: The determining the frequency band where the switching interval is located according to the frequency band of the FDD mode in the candidate frequency bands includes: When the number of frequency bands in the FDD mode is greater than 1, a frequency band where a carrier with the highest or lowest carrier frequency is located is determined in the frequency bands in the FDD mode as the frequency band where the switching interval is located.

12. The method according to any one of claims 1 to 4, wherein: Determining the frequency band where the switching interval is located based on a predetermined rule includes: In the case that there is no frequency band of the FDD mode, a frequency band where a carrier with the highest or lowest carrier frequency is located is determined in the candidate frequency bands as the frequency band where the switching interval is located.

13. The method according to any one of claims 1 to 4, wherein: Determining the frequency band where the switching interval is located based on a predetermined rule includes: In the case where there are multiple frequency bands of the FDD mode or there is no frequency band of the FDD mode, a target candidate frequency band is determined, and a frequency band where the switching interval is located is determined in the target candidate frequency band, wherein the target candidate frequency band includes at least one of the following: In the case where there are multiple frequency bands of the FDD mode, the target candidate frequency band is the frequency bands of the multiple FDD modes; or In the case that there is no frequency band of the FDD mode, the target candidate frequency band is the candidate frequency band.

14. The method according to claim 13, wherein: Determining the frequency band where the switching interval is located in the target candidate frequency band includes: When there is a carrier for uplink information transmission carried by PUSCH in the target candidate frequency band, and the number of carriers with the smallest parameter of a predetermined type among the carriers for uplink information transmission carried by PUSCH in the target candidate frequency band is 1, it is determined that the frequency band in which the carrier with the smallest parameter of a predetermined type among the carriers for uplink information transmission carried by PUSCH in the target candidate frequency band is located is the frequency band in which the switching interval is located.

15. The method according to claim 13, wherein: Determining the frequency band where the switching interval is located in the target candidate frequency band includes: In the case where there is a carrier for uplink information transmission carried by PUSCH in the target candidate frequency band, and the number of carriers with the smallest parameter of a predetermined type among the carriers for uplink information transmission carried by PUSCH in the target candidate frequency band is greater than 1, The carrier having the smallest parameter of a predetermined type among the carriers for uplink information transmission carried by the PUSCH in the target candidate frequency band is used as the second candidate carrier; A frequency band in which a carrier with the highest or lowest carrier frequency is located is determined among the second candidate carriers as the frequency band in which the switching interval is located.

16. The method according to claim 13, wherein: Determining the frequency band where the switching interval is located in the target candidate frequency band includes: When there is no carrier for uplink information transmission carried by PUSCH in the target candidate frequency band, a frequency band in which a carrier with the highest or lowest carrier frequency in the target candidate frequency band is located is determined as the frequency band in which the switching interval is located.

17. The frequency band determination method according to claim 1, wherein: The frequency bands involved include: Before and after all or part of the transmitters of the terminal are switched, the uplink transmission frequency bands of the transmitters that are switched before and after the switching, and the uplink transmission frequency bands of the transmitters that are not switched.

18. A frequency band determination device, comprising: A first determining unit is configured to determine a candidate frequency band according to a frequency band involved in a frequency band switching of a transmitter of a terminal, wherein there are multiple transmitters and the number of the involved frequency bands is greater than 2; and The second determining unit is configured to determine the frequency band where the switching interval is located based on a predetermined rule according to information of the candidate frequency bands when there are multiple candidate frequency bands.

19. A frequency band determination device, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to execute the method according to any one of claims 1 to 17 based on instructions stored in the memory.

20. A computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the steps of the method according to any one of claims 1 to 17.

21. A terminal, comprising: At least two transmitters are configured to support uplink transmission on at least three frequency bands and to perform frequency switching between supported frequency bands; and The frequency band determination device described in claim 18 or 19 is configured to determine the frequency band in which the switching interval of the terminal's transmitter frequency band switching is located.

22. A base station, comprising: The frequency band determination device described in claim 18 or 19 is configured to determine the frequency band in which the switching interval of the terminal's transmitter frequency band switching is located.

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