Transmission switching method and related apparatus

Abstract

The present invention relates to the field of wireless communications and provides a transmitter switching method, a terminal, a base station, a communication system, a transmitter switching device, and a computer-readable storage medium. The transmitter switching method includes a base station sending radio resource control extended signaling to a terminal to instruct a transmitter of the terminal to enter a time-switching working mode among multiple uplink frequency bands, at least one of which has multiple uplink carriers, and the base station sending schedule information to the terminal via a physical downlink control channel to instruct one uplink frequency among the multiple uplink frequencies for the transmitter of the terminal to transmit an uplink signal. In the present invention, at least one uplink frequency band has multiple carriers, thereby improving the transmission performance of uplink data in the communication system.

Description

Technical Field

[0001] This application claims priority based on Chinese Application No. 202010940368.1 filed on September 9, 2020, and the disclosure thereof is incorporated herein by reference in its entirety.

[0002] The disclosure of the present application relates to the field of wireless communication, and in particular, to a transmitter switching method, a terminal, a base station, a communication system, a transmitter switching device, and a computer-readable storage medium.

Background Art

[0003] 3GPP (3rd Generation Partnership Project) has almost completed the specifications regarding the switching between uplink carriers in Rel-16 (Release 16) Super Uplink.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The specification defines the instructions and mechanisms of the transmitter of a terminal that performs switching between two component carriers (for example, one is a 2.1 GHz carrier and the other is a 3.5 GHz carrier). On the first carrier, the terminal uses a single transmitter to transmit uplink data. On the second carrier, the terminal uses a single transmitter or two transmitters to transmit uplink data.

Means for Solving the Problems

[0005] As an embodiment of the first aspect of the present disclosure, a base station transmits radio source control extension signaling indicating a transmitter of the terminal to the terminal, and enters a time-switching operation mode among a plurality of uplink frequency bands in which at least one includes a plurality of uplink carriers, and the base station transmits scheduling information to the terminal via a physical downlink control channel, and instructs one uplink frequency for transmitting an uplink signal by the transmitter of the terminal among the plurality of uplink frequencies. A transmitter switching method including the steps is provided.

[0006] In some embodiments, the transmitter switching method further includes a step of receiving, by the base station, transmitter switching capability information transmitted by the terminal, the transmitter switching capability information includes the number of transmitters of the terminal, and indicates that the transmitters of the terminal support time switching between different uplink frequency bands.

[0007] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and when the number of the transmitters of the terminal is 1, the base station the transmits the scheduling information to the terminal via a physical downlink control channel to instruct the transmitter of the terminal to transmit the uplink signal on a first uplink frequency or the a second uplink frequency.

[0008] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and the transmitter of the terminal includes a first transmitter and a second transmitter, and when the number of the transmitters of the terminal is 2, the base station transmits the scheduling information to the terminal via a physical downlink control channel in one of four methods to instruct the transmitter of the terminal to transmit the uplink signal. The four methods are the a first transmitter and the a second transmitter are theA method for transmitting the uplink signal on the first uplink frequency band, and the first transmitter and the second transmitter the A method for transmitting the uplink signal on the second uplink frequency band, a method for the first transmitter to transmit the uplink signal on the first uplink frequency band, and a method for the second transmitter to transmit the uplink signal on the first uplink frequency band, and a method for the first transmitter to transmit the uplink signal on the first uplink frequency band and the second transmitter not to transmit the uplink signal.

[0009] As an embodiment of the second aspect of the present disclosure, a step of receiving, by a terminal, radio source control extended signaling transmitted by a base station, and a step of controlling, by the terminal, a transmitter to enter a time-switching operation mode among a plurality of uplink frequency bands, at least one of which includes a plurality of uplink carriers, in accordance with an instruction of the radio source control extended signaling, and a step of receiving scheduling information via a physical downlink control channel transmitted by the base station, and a step of controlling an uplink frequency band among the plurality of uplink frequency bands for transmitting an uplink signal by the transmitter in accordance with an instruction of the scheduling information via the physical downlink control channel. A transmitter switching method is provided.

[0010] In some embodiments, the transmitter switching method further includes a step of transmitting, by the transmitter, transmitter switching capability information to the base station, where the transmitter switching capability information includes the number of the transmitters of the terminal and indicates that the transmitters of the terminal support time switching among different uplink frequency bands.

[0011] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and When the number of the transmitters of the terminal is 1, the terminal, in accordance with the instruction of the scheduling information via the physical downlink control channel, the the first uplink frequency orthe Control the transmitter to transmit the uplink signal at the second uplink frequency.

[0012] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and the transmitter of the terminal includes a first transmitter and a second transmitter, and When the number of the transmitters of the terminal is 2, the terminal controls the transmitter in one of four ways according to the indication of the scheduling information via a physical downlink control channel. The four ways are the a first transmitter and the a second transmitter the transmit the uplink signal on a first uplink frequency band, and the first transmitter and the second transmitter the transmit the uplink signal on a second uplink frequency band, and the first transmitter transmits the uplink signal on the first uplink frequency band, and the second transmitter transmits the uplink signal on the first uplink frequency band, and the first transmitter transmits the uplink signal on the first uplink frequency band, and the second transmitter does not transmit the uplink signal.

[0013] As an embodiment of the third aspect of the present disclosure, there is provided a base station including a signal transmission module that transmits radio source control extension signaling indicating a transmitter of the terminal to the terminal so as to enter a time-switching operation mode among a plurality of uplink frequency bands in which at least one includes a plurality of uplink carriers, and an information transmission module that transmits scheduling information to the terminal via a physical downlink control channel so as to indicate one uplink frequency for transmitting an uplink signal by the transmitter of the terminal among the plurality of uplink frequencies.

[0014] In some embodiments, the base station further comprises an information receiving module that receives the transmitter switching capability information transmitted by the terminal, wherein the transmitter switching capability information includes the number of transmitters of the terminal and indicates that the transmitters of the terminal support time switching between different uplink frequency bands.

[0015] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and when the number of the transmitters of the terminal is 1, the information receiving module transmits, by the base station, the the scheduling information to the terminal via a physical downlink control channel to instruct the transmitter of the terminal to transmit the uplink signal on a first uplink frequency or the a second uplink frequency.

[0016] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and the transmitter of the terminal includes a first transmitter and a second transmitter, and when the number of the transmitters of the terminal is 2, the information receiving module transmits, by the base station, the scheduling information to the terminal via a physical downlink control channel in one of four ways to instruct the transmitter of the terminal to transmit the uplink signal. The four ways are the a method in which a first transmitter and the a second transmitter transmit the uplink signal on a first uplink frequency band, a method in which the first transmitter and the second transmitter transmit the uplink signal on a second uplink frequency band, a method in which the first transmitter transmits the uplink signal on a first uplink frequency band and the second transmitter transmits the uplink signal on a first uplink frequency band, and a method in which the first transmitter transmits the uplink signal on a first uplink frequency band and the second transmitter does not transmit the uplink signal. the a method in which a first transmitter and the a second transmitter transmit the uplink signal on a second uplink frequency band, a method in which the first transmitter transmits the uplink signal on a first uplink frequency band and the second transmitter transmits the uplink signal on a first uplink frequency band, and a method in which the first transmitter transmits the uplink signal on a first uplink frequency band and the second transmitter does not transmit the uplink signal.

[0017] As an embodiment of the fourth aspect of the present disclosure, a signal transmission / reception module that receives radio source control extended signaling transmitted by a base station, and in response to an instruction of the radio source control extended signaling, a frequency band switching module that controls a transmitter to enter an operation mode of time switching among a plurality of uplink frequency bands in which at least one includes a plurality of uplink carriers, an information reception module that receives scheduling information via a physical downlink control channel transmitted by the base station, and a frequency control module that controls an uplink frequency band among the plurality of uplink frequency bands for transmitting an uplink signal by the transmitter in response to an instruction of the scheduling information via the physical downlink control channel, a terminal is provided.

[0018] In some embodiments, the terminal further includes an information transmission module that transmits transmitter switching capability information to the base station, and the transmitter switching capability information includes the number of transmitters of the terminal and indicates that the transmitters of the terminal support time switching among different uplink frequency bands.

[0019] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and when the number of the transmitters of the terminal is 1, the frequency band switching module controls the transmitter to transmit the uplink signal on a first uplink frequency or the a second uplink frequency in response to an instruction of the scheduling information via the physical downlink control channel by the terminal. the

[0020] In some embodiments, The plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and the transmitter of the terminal includes a first transmitter and a second transmitter, and when the number of the transmitters of the terminal is 2, the frequency band switching module is a terminal that controls the transmitter in one of four methods in response to an instruction of the scheduling information via the physical downlink control channel. The four methods are the a first transmitter andthe The second transmitter the A method for transmitting the uplink signal on the first uplink frequency band, and the first transmitter and the second transmitter the A method for transmitting the uplink signal on the second uplink frequency band, a method for the first transmitter to transmit the uplink signal on the first uplink frequency band, and a method for the second transmitter to transmit the uplink signal on the first uplink frequency band, and a method for the first transmitter to transmit the uplink signal on the first uplink frequency band and the second transmitter not to transmit the uplink signal.

[0021] As an embodiment of the fifth aspect of the present disclosure, a communication system including the base station and the terminal is provided.

[0022] As an embodiment of the sixth aspect of the present disclosure, a transmitter switching device including a memory and a processor connected to the memory, wherein the processor executes the transmitter switching method based on an instruction stored in the memory is provided.

[0023] As an embodiment of the seventh aspect of the present disclosure, a computer-readable storage medium storing a computer instruction for executing the transmitter switching method when executed by a processor is provided.

[0024] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments taken in conjunction with the accompanying drawings.

[0025] To more clearly explain the technical problems in the embodiments of the present disclosure or related technologies, the drawings necessary for the description of the embodiments or related technologies are briefly described below. The following description is only some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Brief Description of the Drawings

[0026] FIG. 1 is a conceptual flowchart of a transmitter switching method according to some embodiments of the disclosure of the present application. FIG. 2 is a conceptual configuration diagram of a base station according to some embodiments of the disclosure of the present application. FIG. 3 is a conceptual configuration diagram of a terminal according to some embodiments of the disclosure of the present application. FIG. 4 is a conceptual configuration diagram of a communication system according to some embodiments of the disclosure of the present application. FIG. 5 is a conceptual configuration diagram of a transmitter switching device according to some embodiments of the disclosure of the present application.

DETAILED DESCRIPTION OF THE INVENTION

[0027] The technical solutions in the embodiments of the disclosure of the present application will be clearly and completely described with reference to the drawings in the embodiments of the disclosure of the present application. Needless to say, for all embodiments, the following description of at least one exemplary embodiment is essentially merely exemplary and is in no way intended to limit the disclosure of the present application and its applications or uses. All other embodiments that can be derived by those skilled in the art from the embodiments of the disclosure of the present application without creative efforts are intended to be included within the protection scope of the disclosure of the present application.

[0028] The inventor believes that NR (New Radio) has the following dual-band networking scenarios. Assuming that the two frequency bands are frequency bands A and B, the scenarios are as follows. Scenario (1): There is one component carrier in frequency band A and two or more component carriers in frequency band B. Scenario (2): There are two or more component carriers in frequency band A and one component carrier in frequency band B. Scenario (3): There are two or more component carriers in frequency band A and two or more component carriers in frequency band B.

[0029] Considering the above scenario, one technical problem solved by the disclosure of the present application is how to improve the transmission performance of uplink data in a communication system. Based on the technical problem, the disclosure of the present application provides a transmitter switching method for realizing time switching of a terminal between different uplink frequency bands for application in an NR dual-band multi-carrier networking scenario.

[0030] First, some embodiments of the transmitter switching method of the disclosure of the present application will be described with reference to FIG. 1.

[0031] FIG. 1 shows a schematic flowchart of a transmitter switching method according to some embodiments of the disclosure of the present application. As shown in FIG. 1, the transmitter switching method of some embodiments includes steps S101 to S104.

[0032] In step S101, the base station transmits radio source control extension signaling to the terminal, and the terminal receives the radio source control extension signaling transmitted by the base station.

[0033] The radio source control extension signaling instructs the transmitter of the terminal to enter an operation mode of time switching between uplink frequency bands in at least one uplink frequency band of an uplink frequency band including a plurality of uplink carriers. In this step, RRC (Radio Resource Control) signaling is extended. That is, the radio source control extension signaling is new RRC signaling added to the existing RRC signal. In the case of a terminal supporting transmitter switching between frequency bands, when the RRC extension signaling configured by the base station for the terminal is received, it indicates that the base station has instructed the terminal to enter the operation mode of "transmitter switching between frequency bands". In the disclosure of the present application, since there are a plurality of uplink carriers in at least one uplink frequency band, the transmission performance of uplink data in the communication system can be improved.

[0034] In step S102, the terminal controls the transmitter to enter the operation mode of time switching between uplink frequency bands according to the instructions of the radio source control extension signaling.

[0035] For example, the terminal can control the transmitter to enter the operation mode of time switching between uplink frequency bands according to the instructions of semi-static RRC extension signaling and dynamic DCI, and control the frequency band for uplink transmission. (Downlink control information). In an NR dual-band networking system, one or more carriers within one and the same frequency band are defined as one carrier set (for example, carrier set A exists in frequency band A and carrier set B exists in frequency band B). The transmitter of the terminal can perform time switching between two carrier sets. Based on a typical terminal implementation, multiple carriers within one and the same frequency band correspond to one and the same transmitter. That is, signals of multiple carriers within one and the same frequency band can be transmitted by the same transmitter. When the transmitter of the terminal performs frequency band switching, it refers to one transmitter operating simultaneously in one frequency band. When one transmitter operates in frequency band A, it can transmit on one or more carriers in frequency band A. When one transmitter operates in frequency band B, it can transmit on one or more carriers in frequency band B. Within the same frequency band (carrier set), the number of transmission antennas of the terminal is the same.

[0036] In step S103, the base station transmits scheduling information (physical downlink control channel scheduling information) to the terminal via the physical downlink control channel, and the terminal receives the scheduling information via the physical downlink control channel transmitted by the base station. Since the scheduling information via the PDCCH (Physical Downlink Control Channel) is carried by the PDCCH control signaling already defined in the standard, there is no need to introduce new signaling, and the change to the standard is reduced in the implementation form. The scheduling information via the PDCCH indicates the uplink frequency band among the uplink frequency bands used by the transmitter of the terminal to transmit uplink data.

[0037] In some embodiments, the plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and the transmitter of the terminal includes a first transmitter and a second transmitter. When the number of transmitters of the terminal is one, the scheduling information via the physical downlink control channel is the either the first uplink frequency band or the the second uplink frequency band to instruct the transmitter of the terminal to transmit uplink data. When the number of transmitters of the terminal is two, the scheduling information via the physical downlink control channel instructs the transmitter of the terminal to transmit uplink data in one of the following four methods (cases). the Both the first transmitter and the the second transmitter transmit uplink data in the first uplink frequency band. the Both the first transmitter and the the second transmitter transmit uplink data in the second uplink frequency band. The first transmitter transmits uplink data in the first uplink frequency band, and the second transmitter transmits uplink data in the second uplink frequency band. The first transmitter transmits uplink data in the first uplink frequency band, and the second transmitter does not transmit uplink data.

[0038] In step S104, the terminal controls an uplink frequency band among a plurality of uplink frequency bands for transmitting uplink data by the transmitter according to an instruction of scheduling information via a physical downlink control channel. That is, the terminal controls an uplink frequency band among a plurality of uplink frequency bands in which the transmitter transmits uplink data according to an instruction of scheduling information via a physical downlink control channel.

[0039] When the number of transmitters of the terminal is one, the terminal controls the transmitter to transmit uplink data in the first uplink frequency band or the second uplink frequency band.

[0040] When the number of transmitters of the terminal is two, the terminal controls the transmitters to transmit uplink data in one of the following four methods. Both the first transmitter and the second transmitter transmit uplink data in the first uplink frequency band. Both the first transmitter and the second transmitter transmit uplink data in the second uplink frequency band. The first transmitter transmits uplink data in the first uplink frequency band, and the second transmitter transmits uplink data in the second uplink frequency band. The first transmitter transmits uplink data in the first uplink frequency band, and the second transmitter does not transmit uplink data.

[0041] In some embodiments, the transmitter switching method further includes step S100. In step S100, the terminal transmits transmitter switching capability information to the base station, and the base station receives the transmitter switching capability information transmitted by the terminal.

[0042] The transmitter switching capability information carries the number of the transmitters of the terminal and instructs that the transmitters of the terminal support time switching between different uplink frequency bands (that is, supports time-division transmitter switching between different uplink frequencies by the terminal).

[0043] The embodiments can be adapted to a deployment scenario where an operator deploys multiple carriers in one and the same frequency band when facing the enhancement of the super uplink in Rel-17. In an NR dual-band network, since the transmitter of the terminal can perform switching between two frequency bands and include two or more carriers in any of the frequency bands, the switching between carriers is extended to the switching between frequency bands. The transmission performance of the uplink data in the communication system is improved.

[0044] Furthermore, in the embodiments, the terminal type can also be extended from a "dual transmitter terminal" to a "single transmitter or dual transmitter terminal". Since the transmitter can be applied to an NR dual-band network, the terminal cost can be saved. On the other hand, in the case of a low-frequency carrier, it is extended from "supporting only a single transmitter for transmitting uplink data" to "supporting a single transmitter for transmitting uplink data or a dual transmitter for transmitting uplink data". Therefore, in a high-end terminal, for transmitting uplink data, dual transmission can be supported in an FDD (Frequency Division Duplex) frequency band, so that the system capacity and system coverage can be improved.

[0045] The transmitter switching method will be described according to the following scenarios by specific examples.

[0046] Scenario (1): There is one component carrier in frequency band A and two or more component carriers in frequency band B.

[0047] Let one carrier in frequency band A be carrier set A and multiple carriers in frequency band B be carrier set B. The transmitter of the terminal can time-switch between the two carrier sets.

[0048] In the case of a terminal having one transmitter, the transmitter of the terminal can perform time switching between carrier sets A and B. That is, there are the following two states: (1a) One transmitter is in frequency band A, that is, a single transmitter of carrier set A, and (1b) One transmitter is in frequency band B, that is, a single transmitter of carrier set B.

[0049] In the case of a terminal having two sets of transmitters, the two sets of transmitters of the terminal can perform time switching between carrier sets A and B. That is, there are the following four states. (1c) Both sets of transmitters are in frequency band A, that is, two transmitters of carrier set A, (1d) Both sets of transmitters are in frequency band B, that is, two transmitters of carrier set B, (1e) One transmitter is in frequency band A and one transmitter is in frequency band B, that is, a single transmitter on both carrier set A and carrier set B at the same time, (1f) One transmitter is in frequency band A, that is, there is a single transmitter of carrier set A, and the other transmitter does not transmit a signal.

[0050] Based on the scheduling of the base station, the terminal determines that it is in one of the above states. If the terminal is in different states at two consecutive points in time, a transmitter switch is required, and neither of the two carriers can transmit an uplink signal during the transmitter switch.

[0051] In the case of a terminal having one transmitter, if the RRC is configured in the "Transmitter Switching between Frequency Bands" mode, when the PDCCH (downlink control channel) is scheduled to transmit uplink data on one carrier set A, the transmitter needs to operate in frequency band A of the terminal. Also, if the PDCCH is scheduled to transmit uplink data on one or more carrier sets B, the transmitter of the terminal needs to operate in frequency band B.

[0052] In the case of a terminal having two sets of transmitters, if the RRC is configured in the "Transmitter Switching between Frequency Bands" mode, when the PDCCH is scheduled to use one carrier set A and two transmitters (two transmitters) to transmit uplink data, both of the two transmitters of the terminal operate in frequency band A. If the PDCCH is scheduled to use one or more carrier sets B and two transmitters (two transmitters) to transmit uplink data, both of the two transmitter sets of the terminal operate in frequency band B. When the PDCCH is scheduled to transmit uplink data using one transmitter (single transmitter) in each frequency band simultaneously in carrier set A and carrier set B, one transmitter of the terminal is on frequency band A and the other transmitter is on frequency band B. If the PDCCH is scheduled to use one transmitter (single transmitter) on one carrier set A to transmit uplink data, one transmitter of the terminal operates in frequency band A and the other transmitter does not transmit a signal.

[0053] Scenario (2): There are two or more component carriers in frequency band A and one component carrier in frequency band B.

[0054] Regarding the multiple carriers in frequency band A as carrier set A and the one carrier in frequency band B as carrier set B. The transmitter of the terminal can time-switch between the two carrier sets.

[0055] In the case of a terminal having one transmitter, the transmitter of the terminal can perform time switching between carrier sets A and B. That is, there are the following two states: (2a) One transmitter is in frequency band A, that is, a single transmitter of carrier set A, (2b) One transmitter is in frequency band B, that is, a single transmitter of carrier set B.

[0056] In the case of a terminal having two sets of transmitters, the two sets of transmitters of the terminal can perform time switching between carrier set A and carrier set B. That is, there are the following four states. (2c) Both sets of transmitters are in frequency band A, that is, two transmitters on carrier set A, (2d) Both sets of transmitters are in frequency band B, that is, two transmitters on carrier set B, (2e) One transmitter is in frequency band A and the other transmitter is in frequency band B, that is, a single transmitter simultaneously on carrier set A and carrier set B, (2f) There is one transmitter in frequency band A, that is, a single transmitter of carrier set A, and the other transmitter does not transmit a signal.

[0057] Based on the scheduling of the base station, the terminal determines that it is in one of the above states. If the terminal is in different states at two consecutive points in time, a transmitter switch is required, and neither of the two carriers can transmit an uplink signal during the transmitter switch.

[0058] In the case of a terminal having one transmitter, when the RRC is configured in the "Transmitter Switching between Frequency Bands" mode, if the PDCCH (downlink control channel) is scheduled to transmit uplink data in one or more carrier sets, the transmitter of the terminal needs to operate in frequency band A. Also, if the PDCCH is scheduled to transmit uplink data in one carrier set B, the transmitter of the terminal needs to operate in frequency band B. The base station cannot schedule carrier set A and carrier set B simultaneously.

[0059] In the case of a terminal having two sets of transmitters, when the RRC is configured in the "Transmitter Switching between Frequency Bands" mode, if the PDCCH is scheduled to transmit uplink data using one or more carrier sets A and two transmitters (two transmitters), both sets of transmitters of the terminal operate in frequency band A. If the PDCCH is scheduled to transmit uplink data using one carrier set B and two transmitters (two transmitters), both sets of transmitters of the terminal operate in frequency band B. If the PDCCH is scheduled to transmit uplink data simultaneously in carrier set A and carrier set B, and one transmitter (single transmitter) is used for each frequency band, one transmitter of the terminal is in frequency band A and the other transmitter is in frequency band B. If the PDCCH is scheduled to transmit uplink data using one transmitter (single transmitter) in one or more carrier sets A, one transmitter of the terminal operates in frequency band A and the other transmitter does not transmit a signal.

[0060] Scenario (3): There are two or more component carriers in frequency band A and two or more component carriers in frequency band B.

[0061] A plurality of carriers in frequency band A are defined as carrier set A, and a plurality of carriers in frequency band B are defined as carrier set B. The transmitter of the terminal can switch between the two carrier sets in time.

[0062] In the case of a terminal having one transmitter, the transmitter of the terminal can perform time switching between carrier sets A and B. That is, there are the following two states: (3a) One transmitter is in frequency band A, that is, a single transmitter of carrier set A, (3b) One transmitter is in frequency band B, that is, a single transmitter of carrier set B.

[0063] In the case of a terminal having two sets of transmitters, the two sets of transmitters of the terminal can perform time switching between carrier set A and carrier set B. That is, there are the following four states. (3c) Both sets of transmitters are in frequency band A, that is, there are two transmitters on carrier set A, (3d) Both sets of transmitters are in frequency band B, that is, there are two transmitters on carrier set B, (3e) One transmitter is in frequency band A and the other transmitter is in frequency band B, that is, there is a single transmitter on carrier set A and carrier set B at the same time, and (3f) One transmitter is in frequency band A, that is, there is a single transmitter on carrier set A, and the other transmitter does not transmit a signal.

[0064] Based on the scheduling of the base station, the terminal determines that it is in one of the above states. If the terminal is in different states at two consecutive time points, a transmitter switch is required, and neither of the two carriers can transmit an uplink signal during the transmitter switch.

[0065] In the case of a terminal having one transmitter, if the RRC is configured in the "Transmitter Switching between Frequency Bands" mode, when the PDCCH (downlink control channel) is scheduled to transmit uplink data on one or more carrier sets A, the transmitter of the terminal should operate in frequency band A. When the PDCCH is scheduled to transmit uplink data on one or more carrier sets B, the transmitter of the terminal should operate in frequency band B. Also, the base station cannot schedule carrier set A and carrier set B simultaneously.

[0066] In the case of a terminal having two sets of transmitters, when the RRC is configured in the "Transmitter Switching between Frequency Bands" mode, when the PDCCH is scheduled to transmit uplink data using one or more carrier sets A and two transmitters (two transmitters), both sets of transmitters of the terminal should operate in frequency band A. When the PDCCH is scheduled to transmit uplink data using one or more carrier sets B and two transmitters (two transmitters), both sets of transmitters of the terminal should operate in frequency band B. When the PDCCH is scheduled to transmit uplink data simultaneously on carrier set A and carrier set B, and one transmitter (single transmitter) is used for each frequency band, one transmitter of the terminal is in frequency band A and the other transmitter is in frequency band B. When the PDCCH is scheduled to transmit uplink data using one or more carrier sets A and one transmitter (single transmitter) is used, one transmitter of the terminal operates in frequency band A and the other transmitter does not transmit a signal.

[0067] Some embodiments of the base station of the disclosure of the present application will be described below with reference to FIG. 2.

[0068] Figure 2 shows a conceptual configuration diagram of a base station according to some embodiments of the disclosure of the present application. As shown in Figure 2, the base station 20 in the embodiment includes a signaling transmission module 201 and an information transmission module 202. The signaling transmission module 201 transmits radio source control extended signaling configured to instruct the transmitter of the terminal to enter an operation mode of time switching between uplink frequency bands to the terminal. At least one of the uplink frequency bands includes a plurality of uplink carriers (that is, a plurality of uplink carriers exist in at least one of the uplink frequency bands of the uplink frequency band). The information transmission module 202 is configured to transmit scheduling information to the terminal via a physical downlink control channel to indicate the uplink frequency band of the uplink frequency band used by the transmitter of the terminal to transmit uplink data. That is, the information transmission module 202 is configured to transmit scheduling information via a physical downlink control channel to the terminal to indicate the uplink frequency band among the uplink frequency bands for the transmitter of the terminal to transmit an uplink signal.

[0069] In some embodiments, the base station 20 further includes an information reception module 200 configured to receive transmitter switching ability information transmitted by the terminal. The transmitter switching ability information indicates the number of transmitters of the terminal and that the transmitters of the terminal support time switching between different uplink frequency bands.

[0070] In some embodiments, the plurality of uplink frequencies include the first uplink frequency and the second uplink frequency. In some embodiments, when the number of transmitters of the terminal is one, the information transmission module 202, by the base station, to the transmitter of the terminal, the the first uplink frequency band or theIt is configured to transmit scheduling information to a terminal via a physical downlink control channel that instructs (by using) the terminal to transmit uplink data on a second uplink frequency band.

[0071] In some embodiments, the plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and the transmitter of the terminal includes a first transmitter and a second transmitter. In some embodiments, when the number of transmitters of the terminal is two, the information transmission module 202 is configured to transmit scheduling information to the terminal via a physical downlink control channel by which the base station instructs the transmitters of the terminal to transmit uplink data in any one of the following four ways. the Both the first transmitter and the the second transmitter the transmit uplink data in a first uplink frequency band. the Both the first transmitter and the the second transmitter the transmit uplink data in a second uplink frequency band. the The first transmitter the transmits uplink data in a first uplink frequency band, and the the second transmitter the transmits uplink data in a second uplink frequency band. the The first transmitter the transmits uplink data in a first uplink frequency band, and the the second transmitter does not transmit uplink data.

[0072] With reference to FIG. 3, some embodiments of the terminal disclosed in the present application will be described below.

[0073] FIG. 3 shows a conceptual configuration diagram of a terminal according to some embodiments of the disclosure of the present application. As shown in FIG. 3, the terminal 30 in the embodiment includes a signaling reception module 301 configured to receive radio source control extension signaling transmitted by a base station, a frequency band switching module 302, an information reception module 303, and a frequency band control module 304. The signaling reception module 301 receives the radio source control extension signaling transmitted by the base station. The frequency band switching module 302 is configured to control a transmitter to enter an operation mode of time switching between uplink frequency bands according to an instruction of the radio source control extension signaling, and the uplink frequency band includes at least one uplink frequency band among uplink frequency bands including a plurality of uplink carriers. The information reception module 303 is configured to receive scheduling information via a physical downlink control channel transmitted by the base station. The frequency band control module 304 is configured to control an uplink frequency band used by a transmitter to transmit uplink data according to an instruction of scheduling information via the physical downlink control channel.

[0074] In some embodiments, the terminal further includes an information transmission module 300 configured to transmit transmitter switching capability information to the base station. The transmitter switching capability information carries the number of transmitters of the terminal and indicates that the transmitters of the terminal support time switching between different uplink frequency bands.

[0075] In some embodiments, the plurality of uplink frequencies include the first uplink frequency and the second uplink frequency. In some embodiments, when the number of transmitters of the terminal is one, the frequency band control module 304 is configured to control the transmitter to transmit uplink data in a first uplink frequency band or the a second uplink frequency band according to an instruction of scheduling information via the physical downlink control channel by the terminal. the ​

[0076] In some embodiments, the plurality of uplink frequencies include a first uplink frequency and a second uplink frequency, and the transmitter of the terminal includes a first transmitter and a second transmitter. In some embodiments, when the number of transmitters of the terminal is two, the frequency band control module 304 controls the transmitter so that the terminal transmits uplink data in the following four ways according to the indication of the scheduling information via physical downlink control. the Both the first transmitter and the the second transmitter the transmit uplink data in the first uplink frequency band. the Both the first transmitter and the the second transmitter transmit uplink data in the second uplink frequency band. the The first transmitter the transmits uplink data in the first uplink frequency band, the and the second transmitter the transmits uplink data in the second uplink frequency band. the The first transmitter the transmits uplink data in the first uplink frequency band, the and the second transmitter does not transmit uplink data.

[0077] Referring to FIG. 4, some embodiments of the communication system disclosed in the present application will be described below.

[0078] FIG. 4 shows a conceptual configuration diagram of a communication system according to some embodiments of the disclosure of the present application. As shown in FIG. 4, the communication system 40 in the embodiment includes a base station 20 and a terminal 30.

[0079] Referring to FIG. 5, some embodiments of the transmitter switching device disclosed in the present application will be described below.

[0080] FIG. 5 shows a conceptual configuration diagram of a transmitter switching device according to some embodiments of the disclosure of the present application. As shown in FIG. 5, the transmitter switching device 50 of this embodiment includes a memory 510 and a processor 520 connected to the memory 510. The processor 520 is configured to execute the transmitter switching method in any of the foregoing embodiments based on the instructions stored in the memory 510.

[0081] The memory 510 may be, for example, a system memory and may include a fixed non-volatile storage medium or the like. On the system memory, for example, an operating system, application programs, a boot loader, and other programs are stored.

[0082] The transmitter switching device 50 may further include an input / output interface 530, a network interface 540, a storage interface 550, and the like. These interfaces 530, 540, 550 and the memory 510 can be connected to the processor 520 by a bus 560. The input / output interface 530 provides a connection interface for input / output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 540 provides a connection interface for various networking devices. The storage interface 550 provides a connection interface for an external storage device such as an SD card or a USB flash drive.

[0083] The disclosure of the present application further includes a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the transmitter switching method in any of the foregoing embodiments.

[0084] The disclosure of the present application will be described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the disclosure of the present application. Each flow and / or block diagram in the flowchart and / or block diagram, as well as combinations of flows and / or blocks in the flowchart and / or block diagram, are understood to be implementable by computer program instructions. These computer program instructions are provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device, and a machine is provided that generates means for implementing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram by instructions executed by the processor of the computer or other programmable data processing device.

[0085] Also, these computer program instructions can be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner so as to provide a manufactured product that includes instruction means for implementing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0086] These computer program instructions can also be loaded onto a computer or other programmable data processing device to perform a series of operational steps on the computer or other programmable device, and the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0087] The above content is only a preferred embodiment of the disclosure of the present application and is not used to limit the disclosure of the present application. Any changes, equivalent substitutions, improvements, etc. made within the scope of the spirit and principle of the disclosure of the present application are included in the protection scope of the disclosure of the present application.

Claims

Claim 1 A transmission step of transmitting radio source control extension signaling by a base station to instruct a transmitter of the terminal to enter an operation mode of time switching among a plurality of uplink frequency bands to the terminal, wherein the plurality of uplink frequency bands include a first uplink frequency band and a second uplink frequency band, the first uplink frequency band includes a plurality of uplink carriers defined as a first carrier set, and the second uplink frequency band includes a plurality of uplink carriers defined as a second carrier set; A transmission and reception step of transmitting scheduling information by the base station to the terminal via a physical downlink control channel and receiving the scheduling information by the terminal when the number of the transmitters of the terminal is two and the transmitters of the terminal include a first transmitter and a second transmitter, wherein the scheduling information instructs one of the plurality of uplink frequency bands for transmission of an uplink signal by the transmitter of the terminal. A transmitter switching method, wherein the terminal, based on the scheduling information, the transmission of the uplink signal by the transmitter of the terminal is When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and using two transmitters, a method for the first transmitter and the second transmitter to transmit the uplink signal on the plurality of uplink carriers of the first uplink frequency band; When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the second carrier set and using two transmitters, a method for the first transmitter and the second transmitter to transmit the uplink signal on the plurality of uplink carriers of the second uplink frequency band; Transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and on the plurality of uplink carriers of the second carrier set according to the schedule information, and using one transmitter for each of the first uplink frequency band and the second uplink frequency band, when the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and a method for the second transmitter to transmit the uplink signal on the plurality of uplink carriers of the second uplink frequency band; A transmitter switching method that determines that it is one of four methods, which is a method in which when transmitting the uplink signal on the plurality of uplink carriers of the first carrier set according to the schedule information and using one transmitter, the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and the second transmitter does not transmit the uplink signal. **Claim 2** The transmitter switching method according to claim 1, further comprising: a step of receiving, by the base station, transmitter switching capability information transmitted by the terminal; The transmitter switching method, wherein the transmitter switching capability information includes the number of the transmitters of the terminal and is information indicating that the transmitters of the terminal support time switching between different uplink frequency bands. **Claim 3** The transmitter switching method according to claim 2, wherein: when the number of the transmitters of the terminal is one, the base station transmits the schedule information to the terminal via the physical downlink control channel and instructs the transmitter of the terminal to transmit the uplink signal on the first uplink frequency band or the second uplink frequency band. **Claim 4** a step of receiving, by the terminal, radio source control extension signaling transmitted by the base station; A control step of controlling a transmitter by the terminal so as to enter an operation mode of time switching among a plurality of uplink frequency bands according to an instruction of the wireless source control extension signaling, wherein the plurality of uplink frequency bands include a first uplink frequency band and a second uplink frequency band, the first uplink frequency band includes a plurality of uplink carriers defined as a first carrier set, and the second uplink frequency band includes a plurality of uplink carriers defined as a second carrier set. A receiving step of receiving scheduling information by the terminal via a physical downlink control channel transmitted by the base station, wherein the scheduling information indicates one uplink frequency band among the plurality of uplink frequency bands for transmission of an uplink signal by the transmitter of the terminal. A transmitter switching method comprising, when the number of transmitters of the terminal is two and the transmitters of the terminal include a first transmitter and a second transmitter, controlling, by the transmitter, one uplink frequency band among the plurality of uplink frequency bands for transmission of the uplink signal according to an instruction of the scheduling information via the physical downlink control channel, wherein the terminal, based on the scheduling information, the transmission of the uplink signal by the transmitter of the terminal is When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and using two transmitters, a method of transmitting the uplink signal by the first transmitter and the second transmitter on the plurality of uplink carriers of the first uplink frequency band. When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the second carrier set and using two transmitters, a method of transmitting the uplink signal by the first transmitter and the second transmitter on the plurality of uplink carriers of the second uplink frequency band. Transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and on the plurality of uplink carriers of the second carrier set according to the schedule information, and using one transmitter for each of the first uplink frequency band and the second uplink frequency band, when the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and the second transmitter transmits the uplink signal on the plurality of uplink carriers of the second uplink frequency band, and a method for transmitting the uplink signal; When the schedule information includes transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and using one transmitter, the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and the second transmitter does not transmit the uplink signal, and a transmitter switching method that determines that it is one of four methods;

5. The transmitter switching method according to claim 4, further comprising: a step of transmitting, by the terminal, transmitter switching capability information to the base station; The transmitter switching capability information includes the number of the transmitters of the terminal, and is information indicating that the transmitters of the terminal support time switching between different uplink frequency bands.

6. The transmitter switching method according to claim 5, wherein when the number of the transmitters of the terminal is one, the terminal controls the transmitter to transmit the uplink signal on the first uplink frequency band or the second uplink frequency band in response to the display of the schedule information via the physical downlink control channel.

7. A signal transmission module that transmits radio source control extension signaling to a terminal to instruct a transmitter of the terminal to enter an operation mode of time switching among a plurality of uplink frequency bands, where the plurality of uplink frequency bands include a first uplink frequency band and a second uplink frequency band, the first uplink frequency band includes a plurality of uplink carriers defined as a first carrier set, and the second uplink frequency band includes a plurality of uplink carriers defined as a second carrier set. When the number of the transmitters of the terminal is two and the transmitters of the terminal include a first transmitter and a second transmitter, an information transmission module that transmits scheduling information to the terminal via a physical downlink control channel to instruct one of the plurality of uplink frequency bands for the transmission of an uplink signal by the transmitter of the terminal, where the scheduling information instructs one of the plurality of uplink frequency bands for the transmission of the uplink signal by the transmitter of the terminal and is received by the terminal. Based on the scheduling information, by the terminal, the transmission of the uplink signal by the transmitter of the terminal is When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and using two transmitters, whether the first transmitter and the second transmitter transmit the uplink signal on the plurality of uplink carriers of the first uplink frequency band. When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the second carrier set and using two transmitters, whether the first transmitter and the second transmitter transmit the uplink signal on the plurality of uplink carriers of the second uplink frequency band. Transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and on the plurality of uplink carriers of the second carrier set according to the schedule information, and using one transmitter for each of the first uplink frequency band and the second uplink frequency band, when the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and whether the second transmitter transmits the uplink signal on the plurality of uplink carriers of the second uplink frequency band, A base station determined to be one of four cases: when transmitting the uplink signal on the plurality of uplink carriers of the first carrier set according to the schedule information and using one transmitter, the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and whether the second transmitter does not transmit the uplink signal.

8. The base station according to claim 7, further comprising: An information receiving module that receives transmitter switching ability information transmitted by the terminal, The base station, wherein the transmitter switching ability information includes the number of the transmitters of the terminal, and is information indicating that the transmitters of the terminal support time switching between different uplink frequency bands.

9. The base station according to claim 8, When the number of the transmitters of the terminal is one, the information receiving module causes the base station to transmit the schedule information to the terminal via the physical downlink control channel, and instructs the transmitter of the terminal to transmit the uplink signal on the first uplink frequency band or the second uplink frequency band.

10. A terminal, the terminal comprising: A signal transceiver module that receives radio source control extension signaling transmitted by a base station, A frequency band switching module that controls a transmitter to enter a time-switching operation mode among a plurality of uplink frequency bands according to an instruction of the wireless source control extension signaling, where the plurality of uplink frequency bands include a first uplink frequency band and a second uplink frequency band, the first uplink frequency band includes a plurality of uplink carriers defined as a first carrier set, and the second uplink frequency band includes a plurality of uplink carriers defined as a second carrier set. An information receiving module that receives scheduling information via a physical downlink control channel transmitted by the base station, where the scheduling information indicates one of the plurality of uplink frequency bands for transmitting an uplink signal by the transmitter of the terminal. When the number of transmitters of the terminal is two and the transmitters of the terminal include a first transmitter and a second transmitter, a frequency band control module that controls one of the plurality of uplink frequency bands for transmitting the uplink signal by the transmitter according to an instruction of the scheduling information via the physical downlink control channel. The terminal, based on the scheduling information, the transmission of the uplink signal by the transmitter is When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and using two transmitters, whether the first transmitter and the second transmitter transmit the uplink signal on the plurality of uplink carriers of the first uplink frequency band. When the scheduling information includes transmitting the uplink signal on the plurality of uplink carriers of the second carrier set and using two transmitters, whether the first transmitter and the second transmitter transmit the uplink signal on the plurality of uplink carriers of the second uplink frequency band. Transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and on the plurality of uplink carriers of the second carrier set according to the schedule information, and using one transmitter for each of the first uplink frequency band and the second uplink frequency band, when the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and whether the second transmitter transmits the uplink signal on the plurality of uplink carriers of the second uplink frequency band, A terminal that determines that it is one of four cases: when the schedule information includes transmitting the uplink signal on the plurality of uplink carriers of the first carrier set and using one transmitter, the first transmitter transmits the uplink signal on the plurality of uplink carriers of the first uplink frequency band, and whether the second transmitter does not transmit the uplink signal.

11. The terminal according to claim 10, further comprising An information transmission module that transmits transmitter switching capability information to the base station, The terminal, wherein the transmitter switching capability information includes the number of the transmitters of the terminal and indicates that the transmitters of the terminal support time switching between different uplink frequency bands.

12. The terminal according to claim 11, When the number of the transmitters of the terminal is one, the frequency band control module controls the transmitter so that the terminal transmits the uplink signal on the first uplink frequency band or the second uplink frequency band according to the instruction of the schedule information via the physical downlink control channel.

13. A communication system comprising the base station according to any one of claims 7 to 9 and the terminal according to any one of claims 10 to 12.

14. A transmitter switching device comprising a memory and a processor connected to the memory, wherein the processor executes the transmitter switching method according to any one of claims 1 to 6 based on an instruction stored in the memory. ​

15. A computer-readable storage medium storing a computer instruction that, when executed by a processor, executes the transmitter switching method according to any one of claims 1 to 6.

16. A computer program comprising an instruction for causing the processor to execute the transmitter switching method according to any one of claims 1 to 6 when executed by the processor.

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