Frequency band switching method, device and system and computer readable storage medium

Abstract

The invention relates to a frequency band switching method, device and system and a computer readable storage medium, and relates to the technical field of communication. The frequency band switching method comprises the following steps: configuring periodic switching configuration information of a terminal in a first frequency band and a second frequency band according to at least one of a sending period of CSI (Channel State Information) or a sending period of SSB (Secure Socket Block); and sending the periodic switching configuration information to the terminal, so that the terminal performs periodic switching between the first frequency band and the second frequency band according to the periodic switching configuration information. According to the technical scheme, interference can be avoided, so that the communication performance is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a frequency band switching method, a frequency band switching device, a frequency band switching system and a computer-readable storage medium. Background Art

[0002] When an operator's spectrum has multiple scattered small-bandwidth carriers in the low-frequency or medium-frequency range, multi-carrier enhancement technology is mainly used to solve the technical problem of how to efficiently integrate and utilize these spectrums.

[0003] In related technologies, multi-carrier enhancement technology mainly includes technical means such as saving public overhead, flexible scheduling and spectrum pooling, etc. For example, multi-carrier enhancement can be achieved by aggregating bands of different frequencies. Summary of the invention

[0004] The inventors of the present disclosure have discovered that the above-mentioned related technologies have the following problems: interference exists between frequency bands of different frequencies, resulting in a decrease in communication performance.

[0005] In view of this, the present disclosure proposes a frequency band switching technical solution, which can avoid interference and thus improve communication performance.

[0006] According to some embodiments of the present disclosure, a frequency band switching method on the base station side is provided, including: configuring periodic switching configuration information of a terminal between a first frequency band and a second frequency band according to at least one of a CSI (Channel-State Information) transmission period or an SSB (SynchronizationSignal / PBCH Block) transmission period; and sending the periodic switching configuration information to the terminal so that the terminal performs periodic switching between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0007] In some embodiments, the periodic switching configuration information for configuring the terminal between the first frequency band and the second frequency band includes: configuring the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band according to at least one of the sending period of the uplink channel state information or the sending period of the downlink synchronization signal block.

[0008] In some embodiments, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete CSI-RS (Channel-State Information Reference Signal, channel state information reference signal) and / or at least one complete synchronization signal block.

[0009] In some embodiments, the periodic switching configuration information for configuring the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band includes: when the channel state information is periodically sent and the synchronization signal block is also periodically sent, configuring the periodic switching configuration information according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0010] In some embodiments, the periodic switching configuration information includes a switching period, and configuring the periodic switching configuration information includes: configuring the switching period according to an integer multiple of the maximum value of the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0011] In some embodiments, the periodic switching configuration information includes a switching period, and the periodic switching configuration information for configuring the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band includes at least one of the following: when the channel state information is sent non-periodically and the synchronization signal block is sent periodically, configuring the switching period according to the sending period of the synchronization signal block; or when the channel state information is sent periodically and the state of the synchronization signal block is default, configuring the switching period according to the sending period of the reference signal of the channel state information.

[0012] In some embodiments, according to the sending period of the synchronization signal block, configuring the switching period includes: configuring the switching period according to an integer multiple of the sending period of the synchronization signal block; according to the sending period of the reference signal of the channel state information, configuring the switching period includes: configuring the switching period according to an integer multiple of the sending period of the reference signal of the channel state information.

[0013] In some embodiments, the periodic switching configuration information includes a switching start reference time. According to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block, the periodic switching configuration information is configured to include: configuring the switching start reference time according to the first sending moment of the reference signal of the channel state information and the second sending moment of the synchronization signal block, the second sending moment being the next sending moment adjacent to the first sending moment.

[0014] In some embodiments, configuring the switching start reference time according to the first sending time of the reference signal of the channel state information and the second sending time of the synchronization signal block includes: when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information, determining the switching start reference time according to the second sending time; when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information, determining the switching start reference time according to the first sending time.

[0015] In some embodiments, the periodic switching configuration information includes a switching start reference time, and the periodic switching configuration information for configuring the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band includes at least one of the following: when the channel state information is periodically sent and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information; or when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0016] In some embodiments, the periodic switching configuration information includes a switching period, and configuring the periodic switching configuration information of the terminal between the first frequency band and the second frequency band includes: configuring the switching period according to the frequency band switching capability information reported by the terminal.

[0017] In some embodiments, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0018] In some embodiments, the frequency band switching method further includes: sending switching initial state information to the terminal, where the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at the switching start reference time point.

[0019] According to some other embodiments of the present disclosure, a frequency band switching method on the terminal side is provided, including: receiving periodic switching configuration information of the terminal between a first frequency band and a second frequency band sent by a base station, the periodic switching configuration information being configured according to at least one of a sending period of channel state information or a sending period of a synchronization signal block; and performing periodic switching between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0020] In some embodiments, the periodic switching configuration information is configured according to at least one of the sending period of the uplink channel state information or the sending period of the downlink synchronization signal block, and the periodic switching configuration information is the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band.

[0021] In some embodiments, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete channel state information reference signal and / or at least one complete synchronization signal block.

[0022] In some embodiments, when the channel state information is sent periodically and the synchronization signal block is also sent periodically, the periodic switching configuration information is configured according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0023] In some embodiments, the periodic switching configuration information includes a switching period, and the switching period is configured according to an integer multiple of the maximum value of a transmission period of a reference signal of the channel state information and a transmission period of a synchronization signal block.

[0024] In some embodiments, the periodic switching configuration information includes a switching period. When the channel state information is sent aperiodically and the synchronization signal block is sent periodically, the switching period is configured according to the transmission period of the synchronization signal block; and / or when the channel state information is sent periodically and the state of the synchronization signal block is default, the switching period is configured according to the transmission period of the reference signal of the channel state information.

[0025] In some embodiments, the switching period is configured according to an integer multiple of a transmission period of a synchronization signal block; and / or the switching period is configured according to an integer multiple of a transmission period of a reference signal of channel state information.

[0026] In some embodiments, the periodic switching configuration information includes a switching start reference time, which is configured according to a first sending time of a reference signal of the channel state information and a second sending time of a synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0027] In some embodiments, when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the second sending time; when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the first sending time.

[0028] In some embodiments, the periodic switching configuration information includes a switching start reference time. When the channel state information is periodically sent and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information; and / or when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0029] In some embodiments, the switching period is configured according to the frequency band switching capability information reported by the terminal.

[0030] In some embodiments, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0031] In some embodiments, the switching initial state information sent by the base station is received, where the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at the switching start reference time point.

[0032] According to some further embodiments of the present disclosure, a frequency band switching device on the base station side is provided, comprising: a configuration unit, used to configure periodic switching configuration information of a terminal between a first frequency band and a second frequency band according to at least one of a sending period of channel state information or a sending period of a synchronization signal block; and a sending unit, used to send the periodic switching configuration information to the terminal, so that the terminal performs periodic switching between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0033] In some embodiments, the configuration unit configures the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and downlink transmission in the second frequency band according to at least one of the sending period of the uplink channel state information or the sending period of the downlink synchronization signal block.

[0034] In some embodiments, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete channel state information reference signal and / or at least one complete synchronization signal block.

[0035] In some embodiments, when the channel state information is periodically sent and the synchronization signal block is also periodically sent, the configuration unit configures the periodic switching configuration information according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0036] In some embodiments, the periodic switching configuration information includes a switching period, and the configuration unit configures the switching period according to an integer multiple of the maximum value of a transmission period of a reference signal of the channel state information and a transmission period of a synchronization signal block.

[0037] In some embodiments, the periodic switching configuration information includes a switching period, and the configuration unit configures the switching period according to the sending period of the synchronization signal block when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, or configures the switching period according to the sending period of the reference signal of the channel state information when the channel state information is periodically sent and the state of the synchronization signal block is default.

[0038] In some embodiments, the configuration unit configures the switching period according to an integer multiple of a transmission period of a synchronization signal block, or configures the switching period according to an integer multiple of a transmission period of a reference signal of channel state information.

[0039] In some embodiments, the periodic switching configuration information includes a switching start reference time. The configuration unit configures the switching start reference time based on the first sending time of the reference signal of the channel state information and the second sending time of the synchronization signal block. The second sending time is the next sending time adjacent to the first sending time.

[0040] In some embodiments, the configuration unit determines the switching start reference time according to the second sending time when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information; and determines the switching start reference time according to the first sending time when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information.

[0041] In some embodiments, the periodic switching configuration information includes a switching start reference time, and the configuration unit performs at least one of the following: when the channel state information is periodically sent and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information; or when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0042] In some embodiments, the periodic switching configuration information includes a switching period, and the configuration unit configures the switching period according to the frequency band switching capability information reported by the terminal.

[0043] In some embodiments, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0044] In some embodiments, the sending unit sends switching initial state information to the terminal, where the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at a switching start reference time point.

[0045] According to some further embodiments of the present disclosure, a frequency band switching device on the terminal side is provided, including: a receiving unit, used to receive periodic switching configuration information of the terminal between the first frequency band and the second frequency band sent by a base station, the periodic switching configuration information is configured according to at least one of the sending period of the channel state information or the sending period of the synchronization signal block; a switching unit, used to periodically switch between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0046] In some embodiments, the periodic switching configuration information is configured according to at least one of the sending period of the uplink channel state information or the sending period of the downlink synchronization signal block, and the periodic switching configuration information is the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band.

[0047] In some embodiments, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete channel state information reference signal and / or at least one complete synchronization signal block.

[0048] In some embodiments, when the channel state information is sent periodically and the synchronization signal block is also sent periodically, the periodic switching configuration information is configured according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0049] In some embodiments, the periodic switching configuration information includes a switching period, and the switching period is configured according to an integer multiple of the maximum value of a transmission period of a reference signal of the channel state information and a transmission period of a synchronization signal block.

[0050] In some embodiments, the periodic switching configuration information includes a switching period. When the channel state information is sent aperiodically and the synchronization signal block is sent periodically, the switching period is configured according to the transmission period of the synchronization signal block; and / or when the channel state information is sent periodically and the state of the synchronization signal block is default, the switching period is configured according to the transmission period of the reference signal of the channel state information.

[0051] In some embodiments, the switching period is configured according to an integer multiple of a transmission period of a synchronization signal block; and / or the switching period is configured according to an integer multiple of a transmission period of a reference signal of channel state information.

[0052] In some embodiments, the periodic switching configuration information includes a switching start reference time, which is configured according to a first sending time of a reference signal of the channel state information and a second sending time of a synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0053] In some embodiments, when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the second sending time; when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the first sending time.

[0054] In some embodiments, the periodic switching configuration information includes a switching start reference time. When the channel state information is periodically sent and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information; and / or when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0055] In some embodiments, the switching period is configured according to the frequency band switching capability information reported by the terminal.

[0056] In some embodiments, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0057] In some embodiments, the receiving unit receives the switching initial state information sent by the base station, where the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at the switching start reference time point.

[0058] According to some further embodiments of the present disclosure, a frequency band switching system is provided, including: a base station, used to execute the frequency band switching method on the base station side in any of the above embodiments; and a terminal, used to execute the frequency band switching method on the terminal side in any of the above embodiments.

[0059] According to some further embodiments of the present disclosure, a frequency band switching device is provided, comprising: a memory; and a processor coupled to the memory, the processor being configured to execute the frequency band switching method on the base station side or the frequency band switching method on the terminal side in any one of the above-mentioned embodiments based on instructions stored in the memory device.

[0060] According to some further embodiments of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the frequency band switching method on the base station side or the frequency band switching method on the terminal side in any of the above embodiments is implemented.

[0061] In the above embodiment, according to at least one of the transmission period of the channel state information or the transmission period of the synchronization signal block, the terminal is configured to periodically switch between the first frequency band and the second frequency band. In this way, the non-simultaneous transmission and reception configuration of the base station carrier aggregation is realized, the interference between different frequency bands is avoided, and the communication performance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0063] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings:

[0064] Figure 1 A flowchart showing some embodiments of the frequency band switching method disclosed herein;

[0065] Figure 2 Flowcharts showing other embodiments of the frequency band switching method disclosed herein;

[0066] Figure 3 A block diagram showing some embodiments of the frequency band switching device disclosed herein;

[0067] Figure 4 A block diagram showing some other embodiments of the frequency band switching device disclosed in the present invention;

[0068] Figure 5 A block diagram showing some further embodiments of the frequency band switching device disclosed herein;

[0069] Figure 6 A block diagram showing some further embodiments of the frequency band switching device disclosed herein;

[0070] Figure 7 A block diagram showing some embodiments of the frequency band switching system of the present disclosure. DETAILED DESCRIPTION

[0071] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0072] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0073] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0074] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0075] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0076] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0077] As mentioned above, the frequency aggregation technology in the spectrum pooling concept has been approved by 3GPP (3rd Generation Partnership Project), but the aggregation of multiple frequency bands (such as 800MHz and 900MHz) will cause interference problems. The reasons for the interference are, on the one hand, the frequency bands are close together and the antenna isolation is not enough; on the other hand, the downlink of the first frequency band (such as 800MHz) and the uplink of the second frequency band (such as 900MHz) partially overlap.

[0078] In response to the above technical problems, the present disclosure proposes a non-simultaneous transmission and reception configuration scheme for base station carrier aggregation, which configures the terminal to achieve non-simultaneous transmission and reception through inter-carrier switching to avoid interference.

[0079] The NR (New Radio) standard does not yet support the aggregation of overlapping frequency bands, especially low-frequency bands (below 1 GHz). This is mainly due to the interference problem between frequency bands. The main means to solve the above interference problem can include the following.

[0080] For example, from the perspective of antennas, we can increase the number of antennas, and use different antennas to transmit and receive different frequency bands, so as to achieve a certain degree of spatial isolation. However, due to the large size of low-frequency antennas, it is very difficult to add another low-frequency antenna on the terminal side.

[0081] For example, from the perspective of frequency division, we can redefine the aggregated frequencies into new frequency bands that do not overlap or have a certain interval, and use customized filters that match the new frequency bands. In this way, although better isolation can be achieved to solve the interference problem, the definition of new frequency bands and customized filters are limited by the development of the industrial chain, affecting the deployment process of operators' network solutions.

[0082] For example, from the perspective of terminal transmit power, additional maximum transmit power backoff can be used, that is, reducing the terminal transmit power. This works well for non-overlapping frequency bands and can meet the adjacent frequency radiation requirements. However, for overlapping frequency bands, considering the blocking effect on the receiver, the power that needs to be backed off is very large and has no practical deployment value.

[0083] In view of the above technical problems, the present disclosure proposes a technical solution and corresponding configuration information for configuring a terminal to periodically switch between the uplink of the first frequency band and the downlink of the second frequency band according to the capability information reported by the terminal and the current traffic demand. In this way, the interference problem caused by the uplink of the first frequency band and the downlink of the second frequency band due to frequency overlap can be avoided.

[0084] In some embodiments, the present disclosure may adopt periodic switching of uplink transmission of the first frequency band and downlink transmission of the second frequency band; the present disclosure may utilize time slots other than downlink SSB or downlink CSI-RS transmission of the second frequency band to transmit uplink data of the first frequency band. The switching period may be determined by at least one of the transmission period of the SSB or the generation period of the CSI-RS.

[0085] In some embodiments, the technical solution of the present disclosure is mainly based on a carrier non-concurrent solution, and a corresponding signaling process is designed. For example, the technical solution of the present disclosure can be implemented through the following embodiments.

[0086] Figure 1 A flow chart showing some embodiments of the frequency band switching method disclosed in the present invention.

[0087] like Figure 1 As shown, in step 110, according to at least one of the CSI transmission period or the SSB transmission period, the terminal is configured with periodic switching configuration information in the first frequency band and the second frequency band. For example, the periodic switching configuration information may include at least one of the switching period, the switching start reference time, or the switching initial state information.

[0088] In some embodiments, periodic switching configuration information of the terminal's uplink transmission in the first frequency band and downlink transmission in the second frequency band is configured according to at least one of the transmission period of the uplink channel state information or the transmission period of the downlink synchronization signal block.

[0089] For example, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete CSI-RS and / or at least one complete synchronization signal block.

[0090] In some embodiments, when the channel state information is sent periodically and the synchronization signal block is also sent periodically, the periodic switching configuration information is configured according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0091] In some embodiments, the periodic switching configuration information includes a switching period. The switching period is configured according to the frequency band switching capability information reported by the terminal. For example, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0092] For example, the switching period is configured according to an integer multiple of the maximum value of the transmission period of the reference signal of the channel state information and the transmission period of the synchronization signal block.

[0093] For example, the current CSI-RS transmission period in the cell is C CSI , the transmission cycle of SSB is C SSB , the switching cycle capability reported by the user (i.e. the shortest switching cycle supported by the terminal) is C UE In the case of , to ensure that there is at least one complete SSB and at least one complete CSI-RS in the downlink transmission period, the switching period C can be calculated by the following formula:

[0094] C=k×max(C CSI ,C SSB )>C UE ,k=1,2,3…

[0095] k is a positive integer and is a multiple parameter that can be adjusted according to actual needs.

[0096] For example, when the channel state information is sent aperiodically and the synchronization signal block is sent periodically, the switching period is configured according to the transmission period of the synchronization signal block. For example, the switching period is configured according to an integer multiple of the transmission period of the synchronization signal block.

[0097] For example, the current CSI-RS in the cell is sent aperiodically, and the transmission period of SSB is C SSB , the switching cycle capability reported by the user is C UE In order to ensure that there is at least one complete SSB in the downlink transmission cycle, the switching period C can be calculated by the following formula:

[0098] C=k×C SSB >C UE ,k=1,2,3....

[0099] For example, when the channel state information is periodically transmitted and the state of the synchronization signal block is default, the switching period is configured according to the transmission period of the reference signal of the channel state information. For example, the switching period is configured according to an integer multiple of the transmission period of the reference signal of the channel state information.

[0100] For example, the current CSI-RS transmission period in the cell is C CSI , SSB default, the switching cycle capability reported by the user is C UE In the case of , to ensure that there is at least one complete CSI-RS in the downlink transmission period, the switching period C can be calculated by the following formula:

[0101] C=k×C CSI >C UE ,k=1,2,3....

[0102] In some embodiments, the base station configures the switching period according to the current traffic demand. For example, the current traffic demand may include the traffic required to be sent in the first frequency band (such as the traffic for uplink transmission) and the traffic required to be sent in the second frequency band (such as the traffic for downlink transmission).

[0103] For example, the switching period between the first frequency band and the second frequency band may be determined according to the ratio of the traffic volume to be sent in the first frequency band to the traffic volume to be sent in the second frequency band.

[0104] In some embodiments, the periodic switching configuration information includes a switching start reference time. When the channel state information is periodically transmitted and the synchronization signal block is also periodically transmitted, the switching start reference time is configured according to the first transmission time of the reference signal of the channel state information and the second transmission time of the synchronization signal block, and the second transmission time is the next transmission time adjacent to the first transmission time.

[0105] For example, the switching start reference time may be represented by a system frame number and a subframe number.

[0106] For example, when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the second sending time; when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the first sending time.

[0107] For example, the current CSI-RS transmission period in the cell is C CSI , a certain transmission time of CSI-RS is t CSI , the transmission cycle of SSB is C SSB , and t CSI The next transmission time of the adjacent SSB is t SSB In the case of , to ensure that there is at least one complete SSB and at least one complete CSI-RS in the downlink transmission period, the switching start reference time t can be calculated by the following formula:

[0108]

[0109] In some embodiments, when the channel state information is sent non-periodically and the synchronization signal block is sent periodically, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0110] For example, the current CSI-RS in the cell is sent aperiodically, and the transmission period of SSB is C SSB , a certain sending time of SSB is t SSB In the case of , to ensure that there is at least one complete SSB in the downlink transmission cycle, the switching start reference time can be calculated by the following formula:

[0111] t=t SSB

[0112] In some embodiments, when the channel state information is sent periodically and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information.

[0113] For example, the current CSI-RS transmission period in the cell is C CSI , a certain transmission time of CSI-RS is t CSI , when SSB is the default, to ensure that there is at least one complete CSI-RS in the downlink transmission cycle, the switching start reference time can be calculated by the following formula:

[0114] t=t CSI

[0115] In step 120, periodic switching configuration information is sent to the terminal, so that the terminal performs periodic switching between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0116] In some embodiments, the switching initial state information is sent to the terminal, and the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at the switching start reference time point. For example, the working state may include uplink transmission in the first frequency band or downlink transmission in the second frequency band.

[0117] In some embodiments, the present disclosure proposes a non-simultaneous transmission and reception configuration scheme for base station carrier aggregation. The base station can configure the terminal to periodically switch between uplink transmission in the first frequency band and downlink transmission in the second frequency band based on the capability information reported by the terminal (such as the shortest switching period supported by the terminal) and the current traffic demand.

[0118] For example, the periodic switching configuration information configured by the base station may include: the switching period of the first frequency band and the second frequency band, which may be determined by the uplink CSI period and / or the downlink SSB period; the switching start reference time of the first frequency band and the second frequency band, which may be determined by at least one of the uplink CSI period and the sending time or the downlink SSB period and the sending time, and the switching start reference time may be represented by the system frame number and the subframe number; switching initial state information, which is used to indicate the working state of each frequency band at the switching start reference time point, and the working state may include uplink transmission in the first frequency band or downlink transmission in the second frequency band.

[0119] In some embodiments, the base station may configure the periodic switching configuration information through RRC. For example, the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band may be configured through the following embodiments.

[0120]

[0121]

[0122] For example, SwitchingTime indicates the length of the switching cycle, which can be in ms; SwitchingEpoch indicates the switching start reference time, such as sfn=0 corresponding to the first frame, and subFrameNR=0 corresponding to the first subframe of each frame, then sfn=500, subFrameNR=1, which means that the switching start reference time is the second subframe of the 501st frame, and the corresponding time is (501×10+2×1) ms; SwitchingEpochState indicates the switching initial state information, such as UL n8 indicates that the initial state is the uplink of the 900MHz frequency band, and DL n5 indicates that the initial state is the downlink of the 800MHz frequency band.

[0123] In the above embodiment, the technical solution for periodic switching of carriers configured by the base station includes periodic switching information such as configuration switching period, switching start reference time, etc. In this way, the co-frequency interference problem caused by the overlap of uplink and downlink frequencies in overlapping frequency carrier aggregation is solved, thereby improving communication performance.

[0124] Figure 2 Flowcharts showing other embodiments of the frequency band switching method disclosed herein.

[0125] like Figure 2 As shown, in step 210, the periodic switching configuration information of the terminal in the first frequency band and the second frequency band sent by the base station is received, and the periodic switching configuration information is configured according to at least one of the sending period of the channel state information or the sending period of the synchronization signal block.

[0126] In some embodiments, the periodic switching configuration information is configured according to at least one of the sending period of the uplink channel state information or the sending period of the downlink synchronization signal block, and the periodic switching configuration information is the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band.

[0127] In some embodiments, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete channel state information reference signal and / or at least one complete synchronization signal block.

[0128] In some embodiments, when the channel state information is sent periodically and the synchronization signal block is also sent periodically, the periodic switching configuration information is configured according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0129] In some embodiments, the periodic switching configuration information includes a switching period, and the switching period is configured according to an integer multiple of the maximum value of a transmission period of a reference signal of the channel state information and a transmission period of a synchronization signal block.

[0130] In some embodiments, the periodic switching configuration information includes a switching period. When the channel state information is sent aperiodically and the synchronization signal block is sent periodically, the switching period is configured according to the transmission period of the synchronization signal block; and / or when the channel state information is sent periodically and the state of the synchronization signal block is default, the switching period is configured according to the transmission period of the reference signal of the channel state information.

[0131] In some embodiments, the switching period is configured according to an integer multiple of a transmission period of a synchronization signal block; and / or the switching period is configured according to an integer multiple of a transmission period of a reference signal of channel state information.

[0132] In some embodiments, the periodic switching configuration information includes a switching start reference time, which is configured according to a first sending time of a reference signal of the channel state information and a second sending time of a synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0133] In some embodiments, when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the second sending time; when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the first sending time.

[0134] In some embodiments, the periodic switching configuration information includes a switching start reference time. When the channel state information is periodically sent and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information; and / or when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0135] In some embodiments, the switching period is configured according to the frequency band switching capability information reported by the terminal.

[0136] In some embodiments, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0137] In step 220, periodic switching is performed between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0138] In some embodiments, the switching initial state information sent by the base station is received, and the switching initial state information is used to indicate the working state of the terminal on the first frequency band and the second frequency band at the switching start reference time point. For example, the working state on the first frequency band and the second frequency band at the switching start reference time point can be determined based on the received switching initial state information.

[0139] Figure 3 A block diagram showing some embodiments of the frequency band switching device disclosed herein.

[0140] like Figure 3 As shown, the frequency band switching device 3 on the base station side includes: a configuration unit 31, used to configure the periodic switching configuration information of the terminal between the first frequency band and the second frequency band according to at least one of the sending period of the channel state information or the sending period of the synchronization signal block; a sending unit 32, used to send the periodic switching configuration information to the terminal, so that the terminal performs periodic switching between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0141] In some embodiments, the configuration unit 31 configures the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and downlink transmission in the second frequency band according to at least one of the transmission period of the uplink channel state information or the transmission period of the downlink synchronization signal block.

[0142] In some embodiments, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete channel state information reference signal and / or at least one complete synchronization signal block.

[0143] In some embodiments, when the channel state information is periodically sent and the synchronization signal block is also periodically sent, the configuration unit 31 configures the periodic switching configuration information according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0144] In some embodiments, the periodic switching configuration information includes a switching period, and the configuration unit 31 configures the switching period according to an integer multiple of the maximum value of the transmission period of the reference signal of the channel state information and the transmission period of the synchronization signal block.

[0145] In some embodiments, the periodic switching configuration information includes a switching period, and the configuration unit 31 configures the switching period according to the sending period of the synchronization signal block when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, or configures the switching period according to the sending period of the reference signal of the channel state information when the channel state information is periodically sent and the state of the synchronization signal block is default.

[0146] In some embodiments, the configuration unit 31 configures the switching period according to an integer multiple of a transmission period of a synchronization signal block, or configures the switching period according to an integer multiple of a transmission period of a reference signal of the channel state information.

[0147] In some embodiments, the periodic switching configuration information includes a switching start reference time. The configuration unit 31 configures the switching start reference time according to the first sending time of the reference signal of the channel state information and the second sending time of the synchronization signal block. The second sending time is the next sending time adjacent to the first sending time.

[0148] In some embodiments, the configuration unit 31 determines the switching start reference time according to the second sending time when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information; and determines the switching start reference time according to the first sending time when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information.

[0149] In some embodiments, the periodic switching configuration information includes a switching start reference time, and the configuration unit 31 performs at least one of the following: when the channel state information is periodically sent and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information; or when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0150] In some embodiments, the periodic switching configuration information includes a switching period, and the configuration unit 31 configures the switching period according to the frequency band switching capability information reported by the terminal.

[0151] In some embodiments, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0152] In some embodiments, the sending unit 32 sends the switching initial state information to the terminal, where the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at the switching start reference time point.

[0153] Figure 4 Block diagrams showing some other embodiments of the frequency band switching device disclosed herein.

[0154] like Figure 4As shown, the frequency band switching device 4 on the terminal side includes: a receiving unit 41, used to receive periodic switching configuration information of the terminal between the first frequency band and the second frequency band sent by the base station, the periodic switching configuration information is configured according to at least one of the sending period of the channel state information or the sending period of the synchronization signal block; a switching unit 42, used to periodically switch between the first frequency band and the second frequency band according to the periodic switching configuration information.

[0155] In some embodiments, the periodic switching configuration information is configured according to at least one of the sending period of the uplink channel state information or the sending period of the downlink synchronization signal block, and the periodic switching configuration information is the periodic switching configuration information of the terminal's uplink transmission in the first frequency band and the downlink transmission in the second frequency band.

[0156] In some embodiments, the periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete channel state information reference signal and / or at least one complete synchronization signal block.

[0157] In some embodiments, when the channel state information is sent periodically and the synchronization signal block is also sent periodically, the periodic switching configuration information is configured according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

[0158] In some embodiments, the periodic switching configuration information includes a switching period, and the switching period is configured according to an integer multiple of the maximum value of a transmission period of a reference signal of the channel state information and a transmission period of a synchronization signal block.

[0159] In some embodiments, the periodic switching configuration information includes a switching period. When the channel state information is sent aperiodically and the synchronization signal block is sent periodically, the switching period is configured according to the transmission period of the synchronization signal block; and / or when the channel state information is sent periodically and the state of the synchronization signal block is default, the switching period is configured according to the transmission period of the reference signal of the channel state information.

[0160] In some embodiments, the switching period is configured according to an integer multiple of a transmission period of a synchronization signal block; and / or the switching period is configured according to an integer multiple of a transmission period of a reference signal of channel state information.

[0161] In some embodiments, the periodic switching configuration information includes a switching start reference time, which is configured according to a first sending time of a reference signal of the channel state information and a second sending time of a synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0162] In some embodiments, when the sending period of the synchronization signal block is greater than or equal to the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the second sending time; when the sending period of the synchronization signal block is less than the sending period of the reference signal of the channel state information, the switching start reference time is determined according to the first sending time.

[0163] In some embodiments, the periodic switching configuration information includes a switching start reference time. When the channel state information is periodically sent and the state of the synchronization signal block is default, the switching start reference time is configured according to the first sending time of the reference signal of the channel state information; and / or when the channel state information is non-periodically sent and the synchronization signal block is periodically sent, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

[0164] In some embodiments, the switching period is configured according to the frequency band switching capability information reported by the terminal.

[0165] In some embodiments, the frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

[0166] In some embodiments, the receiving unit 41 receives the switching initial state information sent by the base station, where the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at the switching start reference time point.

[0167] Figure 5 The block diagrams show some further embodiments of the frequency band switching device of the present disclosure.

[0168] like Figure 5 As shown, the frequency band switching device 5 of this embodiment includes: a memory 51 and a processor 52 coupled to the memory 51, and the processor 52 is configured to execute the frequency band switching method on the base station side or the frequency band switching method on the terminal side in any embodiment of the present disclosure based on the instructions stored in the memory 51.

[0169] The memory 51 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, an application program, a boot loader, a database, and other programs.

[0170] Figure 6 Block diagrams showing some further embodiments of the frequency band switching device disclosed herein.

[0171] like Figure 6As shown, the frequency band switching device 6 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, and the processor 620 is configured to execute the frequency band switching method on the base station side or the frequency band switching method on the terminal side in any one of the aforementioned embodiments based on the instructions stored in the memory 610.

[0172] The memory 610 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, an application program, a boot loader, and other programs.

[0173] The frequency band switching device 6 may also include an input / output interface 630, a network interface 640, a storage interface 650, etc. These interfaces 630, 640, 650, the memory 610, and the processor 620 may be connected, for example, via a bus 660. The input / output interface 630 provides a connection interface for input / output devices such as a display, a mouse, a keyboard, a touch screen, a microphone, and a speaker. The network interface 640 provides a connection interface for various networked devices. The storage interface 650 provides a connection interface for external storage devices such as an SD card and a USB flash drive.

[0174] Figure 7 A block diagram showing some embodiments of the frequency band switching system of the present disclosure.

[0175] like Figure 7 As shown, the frequency band switching system 7 includes: a base station 71, which is used to execute the frequency band switching method on the base station side in any of the above embodiments; and a terminal 72, which is used to execute the frequency band switching method on the terminal side in any of the above embodiments.

[0176] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, 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. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media including but not limited to disk storage, CD-ROM, optical storage, etc., which contain computer-usable program code.

[0177] So far, the frequency band switching method, frequency band switching device, frequency band switching system and computer-readable storage medium according to the present disclosure have 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 herein.

[0178] The method and system of the present disclosure may be implemented in many ways. For example, the method and system 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.

[0179] Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A frequency band switching method, comprising: According to at least one of a transmission period of the channel state information or a transmission period of the synchronization signal block, configure periodic switching configuration information of the terminal in the first frequency band and the second frequency band; The periodic switching configuration information is sent to the terminal, so that the terminal periodically switches between the first frequency band and the second frequency band according to the periodic switching configuration information.

2. The frequency band switching method according to claim 1, wherein: The periodic switching configuration information of configuring the terminal in the first frequency band and the second frequency band includes: The periodic switching configuration information of the uplink transmission of the terminal in the first frequency band and the downlink transmission in the second frequency band is configured according to at least one of the sending period of the uplink channel state information or the sending period of the downlink synchronization signal block.

3. The frequency band switching method according to claim 2, wherein: The periodic switching configuration information ensures that the downlink transmission period of the terminal includes at least one complete channel state information reference signal and / or at least one complete synchronization signal block.

4. The frequency band switching method according to claim 2, wherein: The periodic switching configuration information for configuring the terminal to perform uplink transmission in the first frequency band and downlink transmission in the second frequency band includes: In the case where the channel state information is sent periodically and the synchronization signal block is also sent periodically, the periodic switching configuration information is configured according to the sending period of the reference signal of the channel state information and the sending period of the synchronization signal block.

5. The frequency band switching method according to claim 4, wherein: The periodic switching configuration information includes a switching period, The configuring the periodic switching configuration information according to the transmission period of the reference signal of the channel state information and the transmission period of the synchronization signal block includes: The switching period is configured according to an integer multiple of a maximum value of a sending period of a reference signal of the channel state information and a sending period of the synchronization signal block.

6. The frequency band switching method according to claim 2, wherein: The periodic switching configuration information includes a switching period, The periodic switching configuration information for configuring the terminal to perform uplink transmission in the first frequency band and downlink transmission in the second frequency band includes at least one of the following: In a case where the channel state information is sent aperiodically and the synchronization signal block is sent periodically, configuring the switching period according to the sending period of the synchronization signal block; or In a case where the channel state information is sent periodically and the state of the synchronization signal block is default, the switching period is configured according to a sending period of a reference signal of the channel state information.

7. The frequency band switching method according to claim 6, wherein: The configuring the switching period according to the sending period of the synchronization signal block includes: Configuring the switching period according to an integer multiple of the transmission period of the synchronization signal block; The configuring the switching period according to the transmission period of the reference signal of the channel state information comprises: The switching period is configured according to an integer multiple of a sending period of a reference signal of the channel state information.

8. The frequency band switching method according to claim 4, wherein: The periodic switching configuration information includes a switching start reference time, The configuring the periodic switching configuration information according to the transmission period of the reference signal of the channel state information and the transmission period of the synchronization signal block includes: The switching start reference time is configured according to the first sending time of the reference signal of the channel state information and the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

9. The frequency band switching method according to claim 8, wherein: The configuring the switching start reference time according to the first sending time of the reference signal of the channel state information and the second sending time of the synchronization signal block includes: In a case where a transmission period of the synchronization signal block is greater than or equal to a transmission period of the reference signal of the channel state information, determining the switching start reference time according to the second transmission time; In a case where a sending period of the synchronization signal block is smaller than a sending period of the reference signal of the channel state information, the switching start reference time is determined according to the first sending time.

10. The frequency band switching method according to claim 2, wherein: The periodic switching configuration information includes a switching start reference time, The periodic switching configuration information for configuring the terminal to perform uplink transmission in the first frequency band and downlink transmission in the second frequency band includes at least one of the following: When the channel state information is sent periodically and the state of the synchronization signal block is default, configuring the switching start reference time according to a first sending time of a reference signal of the channel state information; or In the case where the channel state information is sent non-periodically and the synchronization signal block is sent periodically, the switching start reference time is configured according to the second sending time of the synchronization signal block, and the second sending time is the next sending time adjacent to the first sending time.

11. The frequency band switching method according to any one of claims 1 to 10, wherein: The periodic switching configuration information includes a switching period, The periodic switching configuration information of configuring the terminal in the first frequency band and the second frequency band includes: The switching period is configured according to the frequency band switching capability information reported by the terminal.

12. The frequency band switching method according to claim 11, wherein: The frequency band switching capability information includes the shortest switching period supported by the terminal, and the switching period is greater than the shortest switching period.

13. The frequency band switching method according to any one of claims 1 to 10, further comprising: Sending switching initial state information to the terminal, where the switching initial state information is used to indicate the working state of the terminal in the first frequency band and the second frequency band at a switching start reference time point.

14. A frequency band switching method, comprising: Receiving periodic switching configuration information of the terminal in the first frequency band and the second frequency band sent by the base station, where the periodic switching configuration information is configured according to at least one of a sending period of the channel state information or a sending period of the synchronization signal block; Periodically switch between the first frequency band and the second frequency band according to the periodic switching configuration information.

15. A frequency band switching device, comprising: A configuration unit, configured to configure periodic switching configuration information of the terminal in the first frequency band and the second frequency band according to at least one of a transmission period of the channel state information or a transmission period of the synchronization signal block; A sending unit is used to send the periodic switching configuration information to the terminal, so that the terminal periodically switches between the first frequency band and the second frequency band according to the periodic switching configuration information.

16. A frequency band switching device, comprising: A receiving unit, configured to receive periodic switching configuration information of a terminal in a first frequency band and a second frequency band sent by a base station, wherein the periodic switching configuration information is configured according to at least one of a sending period of channel state information or a sending period of a synchronization signal block; A switching unit is used to periodically switch between the first frequency band and the second frequency band according to the periodic switching configuration information.

17. A frequency band switching system, comprising: A base station, configured to execute the frequency band switching method according to any one of claims 1 to 13; A terminal, used to execute the frequency band switching method described in claim 14.

18. A frequency band switching device, comprising: Memory; and A processor coupled to the memory, the processor being configured to execute the frequency band switching method according to any one of claims 1 to 13 or the frequency band switching method according to claim 14 based on instructions stored in the memory.

19. A computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the frequency band switching method according to any one of claims 1 to 13 or the frequency band switching method according to claim 14 is implemented.

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