Partial bandwidth switching method, device, service node, user terminal and medium

Abstract

The present application provides a partial bandwidth switching method, device, service node, user terminal and medium. The method determines the switching time slot offset of the partial bandwidth switching process of each cell in the service node, and the switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to the required switching delay of the cell to which it belongs; and sends switching indication information to the user terminal, and the switching indication information includes each switching time slot offset.

Description

Technical Field

[0001] The present application relates to a wireless communication network, for example, to a partial bandwidth switching method, device, service node, user terminal and medium. Background Art

[0002] The fifth generation mobile communication (Fifth Generation, 5G) system supports a larger system bandwidth than previous wireless communication systems. The concept of partial bandwidth (Bandwidth Part, BWP) is introduced in the 5G system. BWP refers to a continuous bandwidth. (User Equipment, UE) does not need to support data transmission and reception within the entire system bandwidth, but only needs to support data transmission and reception within part of the bandwidth of BWP. At the same time, each UE has only one activated uplink BWP and one activated downlink BWP. The UE can dynamically adjust the activated BWP according to the service situation. Partial bandwidth bundle switching (Bandwidth PartBundle) involves BWP switching on multiple cells (Cells) in the service node. The BWP switching delay on different cells may be inconsistent, and the BWP switching on different cells will affect each other. In the process of communication between the service node and the UE, if the UE has not completed the BWP switching on each Cell, it will cause the base station and the UE to be unable to effectively transmit and receive data and synchronize, affecting the communication quality. Summary of the invention

[0003] The present application provides a partial bandwidth switching method, device, service node, user terminal and medium to improve the reliability of partial bandwidth switching in each cell and improve the communication quality.

[0004] In a first aspect, an embodiment of the present application provides a partial bandwidth switching method, including:

[0005] Determine a switching time slot offset of a partial bandwidth switching process of each cell in the serving node, wherein a switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs;

[0006] Sending switching indication information to the user terminal, wherein the switching indication information includes each of the switching time slot offsets.

[0007] In a second aspect, an embodiment of the present application further provides a partial bandwidth switching method, including:

[0008] Receiving handover indication information sent by the service node, the handover indication information including a handover time slot offset of a partial bandwidth handover process of each cell in the service node, and a handover delay of each handover time slot offset in a corresponding cell is greater than or equal to a required handover delay of the corresponding cell;

[0009] Part of the bandwidth bundling is switched according to the switching indication information.

[0010] In a third aspect, an embodiment of the present application further provides a partial bandwidth switching device, including:

[0011] A switching time slot determination module, configured to determine a switching time slot offset of a partial bandwidth switching process of each cell in a serving node, wherein a switching delay of each switching time slot offset in a cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs;

[0012] The sending module is configured to send switching indication information to the user terminal, wherein the switching indication information includes each of the switching time slot offsets.

[0013] In a fourth aspect, an embodiment of the present application further provides a partial bandwidth switching device, including:

[0014] A receiving module, configured to receive switching indication information sent by a service node, wherein the switching indication information includes a switching time slot offset of a partial bandwidth switching process of each cell in the service node, and a switching delay of each switching time slot offset in a cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs;

[0015] The switching module is configured to perform partial bandwidth bundling switching according to the switching indication information.

[0016] In a fifth aspect, an embodiment of the present application further provides a service node, including:

[0017] one or more processors;

[0018] a storage device configured to store one or more programs;

[0019] When the one or more programs are executed by the one or more processors, the one or more processors implement the partial bandwidth switching method as described in the first aspect.

[0020] In a sixth aspect, an embodiment of the present application further provides a user terminal, including:

[0021] one or more processors;

[0022] a storage device configured to store one or more programs;

[0023] When the one or more programs are executed by the one or more processors, the one or more processors implement the partial bandwidth switching method as described in the second aspect.

[0024] In a seventh aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned partial bandwidth switching method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A flowchart of a partial bandwidth switching method provided by an embodiment;

[0026] Figure 2 A schematic diagram of partial bandwidth switching provided by an embodiment;

[0027] Figure 3 A schematic diagram of partial bandwidth bundling switching provided by an embodiment;

[0028] Figure 4 A schematic diagram of A-CSI-RS triggering provided by an embodiment;

[0029] Figure 5 A flowchart of a partial bandwidth switching method provided by an embodiment;

[0030] Figure 6 A schematic diagram of the structure of a partial bandwidth switching device provided by an embodiment;

[0031] Figure 7 A schematic diagram of the structure of a partial bandwidth switching device provided by an embodiment;

[0032] Figure 8 A schematic diagram of the structure of a service node provided by an embodiment;

[0033] Fig. 9 A schematic diagram of the structure of a user terminal provided by an embodiment. DETAILED DESCRIPTION

[0034] The present application is described below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily. It should also be noted that, for ease of description, only the parts related to the present application rather than all structures are shown in the accompanying drawings.

[0035] Compared with previous wireless communication systems, 5G systems support larger system bandwidths. According to the Third Generation Partnership Project (3GPP) TS38.101-2 protocol, 5G systems support a maximum system bandwidth of 400MHz. For user terminals, supporting such a large system bandwidth will not only increase the cost of UEs, but also increase the power consumption of UEs. Based on BWP technology, UEs only need to support data transmission and reception within part of the bandwidth of BWP, and UEs can switch activated BWPs according to actual needs.

[0036] Partial bandwidth bundling switching involves BWP switching on multiple cells in the service node. In the 5G system, each UE is configured with up to 4 uplink BWPs and 4 downlink BWPs on each carrier. At the same time, each UE can only have one activated uplink BWP and one activated downlink BWP. The configuration on each BWP may be different, and the UE dynamically adjusts the activated BWP according to the service situation. In one embodiment, the UE is configured with 2 downlink BWPs, including BWP1 and BWP2, the bandwidth of BWP1 is relatively large, and the bandwidth of BWP2 is relatively small. When the UE has a large downlink traffic volume, the UE can activate BWP1 for downlink service transmission; when the UE has a small downlink traffic volume, the UE can switch to BWP2 to save energy.

[0037] When the UE receives the BWP switching indication information, it takes a certain amount of time to prepare and perform the BWP switching. This period of time is the BWP switching delay. The related technology can only ensure that the switching delay is greater than or equal to the delay required for the switching of the cell that currently actively initiates the BWP switching, and does not consider the BWP switching delay on other cells. In order to solve the problem that the BWP bundling switching technology fails to consider the delay required for the switching of each cell, resulting in low BWP switching reliability and inability to effectively send and receive data and synchronize between the service node and the UE, an embodiment of the present application provides a partial bandwidth switching method, which improves the reliability of partial bandwidth switching in each cell and improves the communication quality by indicating a reasonable switching time slot offset for each cell.

[0038] Figure 1 FIG. 1 is a flow chart of a partial bandwidth switching method provided by an embodiment. Figure 1 As shown, the method is applied to a service node and includes step S10 and step S20.

[0039] Step S10: determining a switching time slot offset of a partial bandwidth switching process of each cell in the serving node, wherein a switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs.

[0040] Step S20: Send switching indication information to the user terminal, wherein the switching indication information includes each of the switching time slot offsets.

[0041] In one embodiment, BWP switching is implemented by at least one of the following methods: Downlink Control Information (DCI) switching, Radio Resource Control (RRC) signaling switching, and Inactivity Timer switching. The DCI switching is a BWP switching indicated by a DCI sent by a service node to a UE, and the UE determines the target uplink BWP and the target downlink BWP according to the bandwidth part indicator in DCI format 0_1 ​​and DCI format 1_1. The RRC signaling switching is a BWP switching indicated by an RRC signaling sent by a service node to a UE, and the UE determines the target uplink BWP and the target downlink BWP according to the first active uplink BWP identity and the first active downlink BWP identity in the RRC signaling. Inactivity timer switching means that when the BWP inactivity timer of the UE times out, the UE switches the downlink BWP to the default downlink BWP, that is, the BWP ID is the default downlink BWP-IP (Default Downlink BWP-Id).

[0042] Figure 2 FIG. 1 is a schematic diagram of partial bandwidth switching provided by an embodiment. Figure 2As shown, partial bandwidth switching means that the service node instructs the UE to switch from the source BWP to the target BWP. When the UE is in time slot (Slot) 3 in the source BWP, it receives the switching indication information sent by the service node and performs BWP switching. Assuming that the subcarrier spacing of the source BWP and the target BWP are both 30KHz (corresponding to μ=1), the UE capability corresponds to the first type, and the time slots required for BWP switching in this scenario are 2 slots. If the time slots required to complete the BWP switching in the current cell are 2, the switching time slot offset indicated by the service node to the UE is 4, and the switching time slot offset is greater than or equal to the time slot required for switching, then the UE is sufficient to complete the BWP switching within the time of 4 switching time slot offsets, and the UE switches to time slot 7 of the target BWP and receives the physical downlink shared channel (PDSCH) in time slot 7. If the time slot required to complete the BWP switching in the current cell is 6, when the switching time slot offset indicated to the UE is 4, the BWP switching cannot be completed in time, affecting the communication between the service node and the UE.

[0043] Figure 3 FIG. 1 is a schematic diagram of a partial bandwidth bundling switching provided by an embodiment. Figure 3 As shown, the BWP bundle configures the BWP bundling relationship between cell 1 and cell 2, and configures the BWP bundling relationship between cell 1 and cell 3. When BWP 1 switches to BWP 2 in cell 1, it triggers cell 2 and cell 3 to also switch from BWP 1 to BWP 2.

[0044] In one embodiment, the service node includes at least two cells. The cell is an active cell or a passive cell, the active cell is a cell in the service node that actively initiates partial bandwidth switching, and the passive cell is a cell in the service node that passively initiates partial bandwidth switching. Figure 3 Cell 1 is an active cell, and cells 2 and 3 are passive cells.

[0045] The handover delay of BWP is related to the subcarrier spacing type of BWP and UE capability. 3GPP TS38.133[2] defines the required handover time slots for handover scenarios with different subcarrier spacing types and different UE capabilities. Table 1 is a comparison table of the handover required time slots and related parameters.

[0046] Table 1 Comparison table of switching time slots and related parameters

[0047]

[0048] As shown in Table 1, for example, in a Cell, when the subcarrier spacing type μ is 2 (the corresponding time slot length is 0.25ms), and the UE type corresponding to the UE capability is the first type, the time slot required for switching is 3, and the UE needs at least 3 switching time slot offsets to complete the BWP switching. In this case, the delay required for switching is 0.25ms*3=0.75ms.

[0049] Table 2 is a comparison table of subcarrier spacing types and subcarrier spacing.

[0050] For a cell, the subcarrier spacing of the cell is known, and the subcarrier spacing type of the cell can be determined according to Table 2. For example, if the subcarrier spacing of a cell is 30 KHz, the subcarrier spacing type of the cell is μ=1.

[0051] Table 2 Comparison table of subcarrier spacing types and subcarrier spacing

[0052] μ <![CDATA[Δf=2 μ ·15[kHz]]]> 0 15 1 30 2 60 3 120 4 240

[0053] In one embodiment, the switching time slot offset includes at least one of a first switching time slot offset and a second switching time slot offset, wherein the first switching time slot offset is a switching time slot offset of an uplink portion of bandwidth, and the second switching time slot offset is a switching time slot offset of a downlink portion of bandwidth.

[0054] In one embodiment, the first switching time slot offset K0 is set to indicate the switching time slot offset of the partial bandwidth of the PDSCH, and the second switching time slot offset K2 is set to indicate the switching time slot offset of the physical uplink shared channel (Physical Uplink SharedChannel, PUSCH). The switching indication information sent by the service node includes the K0 or K2 value for each cell. By reasonably indicating the K0 or K2 value, sufficient time is reserved to ensure that the UE has completed the BWP switching before receiving the PDSCH and sending the PUSCH.

[0055] In one embodiment, the first switching time slot offset K0 is set to indicate the switching time slot offset of the partial bandwidth of the PDSCH, and the second switching time slot offset K2 is set to indicate the switching time slot offset of the physical uplink shared channel (Physical Uplink SharedChannel, PUSCH). The switching indication information sent by the service node only includes the K0 or K2 value of the active cell. By reasonably indicating the K0 or K2 value, sufficient time is reserved to ensure that the UE has completed the BWP switching before receiving the PDSCH and sending the PUSCH.

[0056] In one embodiment, determining the switching time slot offset of the partial bandwidth switching process of each cell in the service node includes: calculating the delay required for the switching of the user terminal in each cell according to the user terminal type and the subcarrier spacing type of each cell; and determining each of the switching time slot offsets according to the maximum value of each required switching delay.

[0057] In one embodiment, for cell 1 to cell n, cell 1 is an active cell, and the BWP switching of cell 1 triggers the BWP switching of cell 2 to cell n, and cells 2 to cell n are all passive cells. First, according to the UE type and the subcarrier spacing type μ of each cell, the switching delay required for each cell is calculated using Table 1 to obtain the switching delay required 1, the switching delay required 2, ..., the switching delay required n; and the switching time slot offsets are determined according to the maximum value max{switching delay required 1, switching delay required 2, ..., switching delay required n} of the switching delay required for each cell, where n is the number of cells in the service node, which is a positive integer.

[0058] In one embodiment, K0 and K2 for the active Cell in the switching indication information need to meet the following conditions:

[0059] The switching delay corresponding to K0 is greater than or equal to the maximum switching delay required for the downlink BWP in the active Cell and all passive Cells, that is:

[0060] The switching delay corresponding to K0 ≥ max{downlink switching delay 1, downlink switching delay 2, ..., downlink switching delay n};

[0061] The switching delay corresponding to K2 is greater than or equal to the maximum switching delay required for the downlink BWP in the active Cell and all passive Cells, that is:

[0062] The switching delay corresponding to K2 ≥ max{uplink switching required delay 1, uplink switching required delay 2, ..., uplink switching required delay n}.

[0063] In one embodiment, the service node includes three cells. For downlink BWP switching, the UE type corresponding to the UE capability is the first type, and cell 1 is the active cell. The subcarrier spacing type μ of cell 1 is 1, the subcarrier spacing type μ of cell 2 is 2, and the subcarrier spacing type μ of cell 3 is 3. Referring to Table 1, the time slots required for BWP switching of UE in cell 1 are 2, and the delay required for switching is 0.5ms*2=1ms; the time slots required for BWP switching of UE in cell 2 are 3, and the delay required for switching is 0.25ms*3=0.75ms; the time slots required for BWP switching of UE in cell 3 are 6, and the delay required for switching is 0.125ms*6=0.75ms. The maximum value of the delays required for each switching is 1ms. The switching delay corresponding to K0 of the active cell must be greater than or equal to 0.75ms. Referring to Table 1, the UE is in cell 1 (active cell), μ=1, and the corresponding switching delay when K0=1 is 0.5ms*2=1ms, which is equal to the maximum value 1ms. Therefore, K0 can be set to 1, or it can be set to an integer greater than 1. The UE is in cell 2 (passive cell), μ=2, and the corresponding switching delay when K0'=4 is 0.25ms*4=1ms, which is equal to the maximum value 1ms. Therefore, K0' of cell 2 should be set to at least 4, or it can be set to an integer greater than 4. The UE is in cell 3 (passive cell), μ=3, and the corresponding switching delay when K0"=4 is 0.125ms*8=1ms, which is equal to the maximum value 1ms. Therefore, K0" of cell 3 should be set to at least 8, or it can be set to an integer greater than 8.

[0064] In one embodiment, determining a switching time slot offset for a partial bandwidth switching process of each cell in a service node includes: determining a user terminal type according to user terminal capabilities, the user terminal type including a first type and a second type; calculating a switching delay required for the user terminal type corresponding to each subcarrier spacing type, and determining each of the switching time slot offsets according to a maximum value of each switching required delay.

[0065] In one embodiment, for cell 1 to cell n, cell 1 is an active cell, and the BWP switching of cell 1 triggers the BWP switching of cell 2 to cell n, and cells 2 to cell n are all passive cells. First, the UE type is determined according to the capabilities reported by the UE, and the UE types include the first type and the second type shown in Table 1. The switching delay required for the user terminal type corresponding to each subcarrier spacing type is calculated using Table 1, and each switching time slot offset is determined according to the maximum value of each switching required delay to obtain the switching required delay 1, the switching required delay 2, ..., the switching required delay m; each switching time slot offset is determined according to the maximum value max{switching required delay 1, switching required delay 2, ..., switching required delay m} of the switching required delay of each subcarrier spacing type, where m is the number of subcarrier spacing types, which is a positive integer.

[0066] In one embodiment, K0 and K2 for the active Cell in the switching indication information need to meet the following conditions:

[0067] The switching delay corresponding to K0 is greater than or equal to the maximum value of the required switching delay required by the downlink BWP of the UE capability (or the UE type) in each subcarrier spacing type:

[0068] The switching delay corresponding to K0 ≥ max{downlink switching delay 1, downlink switching delay 2, ..., downlink switching delay n};

[0069] The switching delay corresponding to K2 is greater than or equal to the maximum value of the required switching delay required by the uplink BWP of the UE capability (or the UE type) in each subcarrier spacing type:

[0070] The switching delay corresponding to K2 ≥ max{uplink switching required delay 1, uplink switching required delay 2, ..., uplink switching required delay n}.

[0071] For example, the UE type corresponding to the capability reported by the UE is Type 1. According to Table 1, the required switching delays for the Type 1UE under each subcarrier spacing type are 1ms*1=1ms, 0.5ms*2=1ms, 0.25ms*3=0.75ms, and 0.125ms*6=0.75ms. The maximum value of the required switching delay for the Type 1UE under each subcarrier spacing type is 1ms. For Type 1UE, the switching delay corresponding to K0 satisfies that it is greater than or equal to 1ms, and the switching delay corresponding to K2 satisfies that it is greater than or equal to 1ms. Similarly, the UE type corresponding to the capability reported by the UE is Type 2. According to Table 1, the required switching delays for the Type 2UE under each subcarrier spacing type are 1ms*3=3ms, 0.5ms*5=2.5ms, 0.25ms*9=2.25ms, and 0.125ms*17=2.125ms. The maximum value of the required switching delay for the Type 2UE under each subcarrier spacing type is 3ms. For the Type 2UE, the switching delay corresponding to K0 satisfies that it is greater than or equal to 3ms, and the switching delay corresponding to K2 satisfies that it is greater than or equal to 3ms.

[0072] In one embodiment, each switching time slot offset is determined based on the maximum value of each switching required delay, including: searching for the switching time slot offset required for the user terminal in the active cell based on the maximum value; determining an integer greater than or equal to the switching required time slot offset as the switching time slot offset of the active cell; and converting the switching time slot offset of the passive cell based on the switching time slot offset of the active cell.

[0073] For example, the UE type is the first type, cell 1 is an active cell, the subcarrier spacing type μ of cell 1 is 1, and the maximum value is 1ms. According to the maximum value, the time slot offset required for switching of the UE in cell 1 can be found by referring to Table 1. The time slot offset required for switching is the maximum value divided by the time slot length corresponding to cell 1, 1ms÷0.5ms=2, and the search result is that the time slot offset required for switching is 2. For downlink BWP switching, K0 corresponding to cell 1 is set to an integer greater than or equal to 2, for example, K0=3. The switching time slot offset of the passive cell is obtained by conversion based on K0=3.

[0074] In this embodiment, the switching time slot offset applied to different Cells needs to be converted. For example, Cell1 is an active Cell and the subcarrier spacing of its target BWP is 15KHz, Cell2 is a passive Cell and the subcarrier spacing of its target BWP is 30KHz, then the time slot used for PDSCH reception on Cell1 is the switching time slot offset indicated by K0, and the time slot used for PUSCH transmission on Cell1 is the switching time slot offset indicated by K2. K0' and K2' on Cell2 need to be determined by conversion, so as to determine the time slot of Cell2 blind detection PDCCH.

[0075] In one embodiment, the switching time slot offsets of two cells satisfy the following conversion relationship: In this embodiment, K0 is the downlink BWP switching time slot offset of cell 1, K0' is the downlink BWP switching time slot offset of cell 2, μ1 is the subcarrier spacing type of cell 1, and μ2 is the subcarrier spacing type of cell 2.

[0076] In this embodiment, the switching delay of each switching time slot offset in the corresponding cell is greater than or equal to the maximum value.

[0077] This embodiment determines each switching time slot offset according to the maximum value of the delay required for each switching. In the process of K0 and K2 indicating the BWP switching on the active Cell, not only the required switching delay of the active Cell but also the required switching delay on each passive Cell is taken into account, ensuring that the switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to the maximum value, thereby reserving sufficient time for the UE to perform BWP switching and improving the reliability and communication quality of BWP switching.

[0078] In one embodiment, determining a switching time slot offset for a partial bandwidth switching process of each cell in a service node includes: searching for a time slot offset required for switching of the user terminal in the active cell according to a user terminal type and a subcarrier spacing type of the active cell; determining an integer greater than or equal to the time slot offset required for switching as the switching time slot offset of the active cell; and determining a switching time slot offset of a passive cell according to the switching time slot offset of the active cell.

[0079] This embodiment searches for the corresponding switching delay on the active Cell according to the BWP switching scenario of the active Cell, determines an integer greater than or equal to the time slot offset required for the switching of the active Cell as the switching time slot offset of the active cell, and determines the switching time slot offset of the passive cell according to the switching time slot offset of the active cell. K0 or K2 of the BWP switching on the active Cell satisfies: the switching delay corresponding to K0 ≥ the switching delay required for the downlink BWP of the active Cell; the switching delay corresponding to K2 ≥ the switching delay required for the uplink BWP of the active Cell.

[0080] In one embodiment, determining the switching time slot offset of the passive cell based on the switching time slot offset of the active cell includes: taking the sum of the switching time slot offset of the active cell and a first preset offset as the reference time slot number of the passive cell, wherein the first preset offset is an integer; and converting the reference time slot number to obtain the switching time slot offset of the passive cell.

[0081] In this embodiment, the switching time slot offset of the active cell plus the first preset offset offset1 is used as the reference time slot number of the passive cell. The reference time slot number is converted to obtain the switching time slot offset of the passive cell. The first preset offset represents the difference between the switching time slot offsets of the active cell and the passive cell. For example, for downlink BWP switching, the switching time slot offset of the active cell is K0, the subcarrier spacing type is μ1, and the switching time slot offset of the passive cell is K0', the subcarrier spacing type is μ2, then For uplink BWP switching, the switching time slot offset of the active Cell is K2, and the switching time slot offset of the passive Cell is K2'.

[0082] In one embodiment, the first preset offset is determined according to at least one of the first information or the second information, the first information is the pre-configuration information of the radio resource control, and the second information is the preset bit field information of the reinterpreted switching indication information. Offset1 can be pre-configured for the RRC message, or determined by reinterpreting part of the bit field in the BWP switching indication information, the part of the bit field is, for example, a frequency domain resource allocation field, or a time domain resource allocation field, or a carrier indication field, etc. Taking the 3-bit carrier indication field (A1A2A3) as an example, up to 8 first preset offsets offset1 can be indicated. Table 3 is a comparison table of the first preset offset and the 3-bit carrier indication field.

[0083] Table 3 Comparison table of the first preset offset and the 3-bit carrier indication field

[0084] A1A2A3 Offset1 000 -6 001 -4 010 -2 011 0 100 1 101 2 110 4 111 6

[0085] In one embodiment, determining the switching time slot offset of the passive cell according to the switching time slot offset of the active cell includes:

[0086] Using the handover time slot offset of the active cell as the reference time slot number of the passive cell;

[0087] The sum of the number of time slots converted from the reference number of time slots and a first preset offset is used as the switching time slot offset of the passive cell, and the first preset offset is an integer.

[0088] In this embodiment, the switching time slot offset of the active cell is used as the reference time slot number of the passive cell, and the reference time slot number plus the first preset offset offset1 are converted to obtain the switching time slot offset of the passive cell. For example, for downlink BWP switching, the switching time slot offset of the active cell is K0, the subcarrier spacing type is μ1, and the switching time slot offset of the passive cell is K0', and the subcarrier spacing type is μ2, then For uplink BWP switching, the switching time slot offset of the active Cell is K2, and the switching time slot offset of the passive Cell is K2'.

[0089] In one embodiment, the first preset offset is determined according to at least one of the first information or the second information, the first information is pre-configuration information of the radio resource control, and the second information is preset bit field information of the re-interpreted switching indication information. Offset1 can be pre-configured by the RRC message, or determined by re-interpreting a part of the bit field in the BWP switching indication information, the part of the bit field is, for example, a frequency domain resource allocation field, or a time domain resource allocation field, or a carrier indication field, etc.

[0090] In one embodiment, the handover indication information sent by the service node to the UE indicates the handover time slot offset of the active cell to each cell. In this case, the UE determines the handover time slot offset of each cell according to the received handover time slot offset of the active cell.

[0091] In one embodiment, sending switching indication information to a user terminal includes: sending switching indication information to the user terminal through downlink control information; the switching time slot offset includes a first switching time slot offset or a second switching time slot offset, the first switching time slot offset is a switching time slot offset of an uplink portion of the bandwidth, and the second switching time slot offset is a switching time slot offset of a downlink portion of the bandwidth.

[0092] In one embodiment, the active cell and the passive cell are in a partial bandwidth bundling switching relationship, the active cell is a primary cell (PCell) or a secondary cell (SCell), and the passive cell is a secondary cell. The PCell and SCell are defined in a carrier aggregation (CA) scenario.

[0093] In one embodiment, the handover time slot offset of the passive cell is used for transmitting and receiving the PDCCH;

[0094] The BWP switching process of this embodiment is based on the BWP bundling switching of the active cell and the passive cell, and the BWP switching of the active cell triggers the BWP switching of the passive cell.

[0095] In one embodiment, the base station sends a downlink control information DCI message to the UE, the DCI message includes switching indication information, and the DCI message includes a switching indication message, which is set to schedule the cell cross-carrier to indicate that the passive cell SCell undergoes BWP switching, or the active cell BWP bundle indicates that the SCell undergoes BWP switching, or the Scell ​​self-scheduling indicates that the Scell ​​undergoes BWP switching.

[0096] In one embodiment, the switching indication information is configured as a trigger reference signal.

[0097] In one embodiment, the switching indication information is configured to trigger reference signal measurement.

[0098] In one embodiment, the reference signal may be an aperiodic channel state information reference signal (A-CSI-RS).

[0099] In one embodiment, the reference signal may be a semi-persistent channel state information reference signal (Semi-persistent Channel State Information Reference Signal, SP-CSI-RS).

[0100] In one embodiment, the reference signal may be an aperiodic tracking reference signal (A-TRS).

[0101] In one embodiment, the reference signal may be a semi-persistent tracking reference signal (SP-TRS).

[0102] In one embodiment, the downlink control information DCI is a BWP switching DCI, which carries a BWP switching command and a trigger reference signal operation.

[0103] In one embodiment, the cell switches from a dormant BWP to an activated BWP to trigger reference signal operation by default.

[0104] In one embodiment, the reference signal measurement refers to channel state information measurement, including channel measurement and interference measurement, and also includes calculating channel state information (CSI) parameters based on the measurement results, and the CSI parameters include CSI-RS resource indicator CRI, rank indication (RI), precoding matrix indication (PMI) and channel quality indication (CQI). For example, the reference signal measurement may refer to channel state information measurement based on a non-periodic channel state information reference signal.

[0105] In one embodiment, the reference signal measurement reporting refers to the UE feeding back the reference signal measurement result CSI to the base station.

[0106] In one embodiment, the switching indication information is further configured to trigger a reference signal operation, the reference signal operation includes at least one of a reference signal, a reference signal measurement, and a reference signal measurement report, and the reference signal is a channel state information reference signal.

[0107] In one embodiment, the switching indication information is further configured to trigger a reference signal operation under a preset condition.

[0108] In one embodiment, the preset condition includes at least one of the following: the high-level parameter reporting quantity is configured as empty; the high-level parameter sounding reference signal information is configured as true; and the high-level parameter repeated transmission is enabled.

[0109] In one embodiment, the downlink authorized DCI triggers at least one of the reference signal operations when the high-level parameter reporting quantity (Report Quantity) is set to none, or when the high-level parameter tracking reference signal information (Tracking Reference Signal Information, Trs-Info) is set to true (true), or when the high-level parameter repetition (Repetition) enable is set to on (on).

[0110] In one embodiment, the switching indication information is further configured to trigger a reference signal operation, the reference signal operation includes at least one of a reference signal and a reference signal measurement, and the reference signal is a sounding reference signal.

[0111] In one embodiment, the switching indication information is downlink control information of downlink grant, for example, DCI format 1-1, which is used for downlink scheduling (DL Grant), that is, triggering reference signal operation through DCI of downlink scheduling.

[0112] In one embodiment, the time domain position for triggering the reference signal operation is the first available time slot after partial bandwidth switching.

[0113] In one embodiment, the time domain position for triggering the reference signal operation is the first available time slot after the BWP switching. For example, the default is the first available time slot after the SCell BWP switching.

[0114] In one embodiment, SCell 1 undergoes BWP switching through cross-carrier scheduling of Pcell or Scell2, and the UE blindly detects the control message and obtains the downlink switching time slot offset k0 or the uplink switching time slot offset K2 based on the time domain resource allocation domain table lookup. Assuming that the time slot in which the UE receives DCI is slot n, the time slot corresponding to n+k0 or n+k2 is the first available time slot after the SCell1 BWP switching, n+k0 corresponds to the downlink, and n+k2 corresponds to the downlink.

[0115] In one embodiment, for example, SCell undergoes BWP switching through SCell self-scheduling, and the UE blindly detects the control message based on the time domain resource allocation domain table to obtain the downlink switching time slot offset k0 or the uplink switching time slot offset K2. Assuming that the time slot in which the UE receives the DCI is slot n, the time slot corresponding to n+k0 or n+k2 is the first available time slot after the Scell ​​BWP switching, n+k0 corresponds to the downlink, and n+k2 corresponds to the downlink.

[0116] In one embodiment, SCell undergoes BWP switching through the BWP bundle of PCell, and the UE blindly detects the control message and obtains the downlink switching time slot offset k0 or the uplink switching time slot offset K2 based on the time domain resource allocation domain table lookup. Assuming that the time slot in which the UE receives DCI is slot n, the time slot corresponding to n+k0 or n+k2 is the first available time slot after the PCell BWP switching.

[0117] In one embodiment, the time domain position for triggering the reference signal operation is defaulted to the first available time slot after the BWP switching. The default of the first available time slot after the BWP switching can be determined according to the method for determining the offset of each switching time slot in the above embodiment. For example, the UE determines k0' or K2' of the passive cell SCell, and assuming that the time slot in which the UE receives the DCI is slotn, then the time slot corresponding to n+k0' or n+k2' is the first available time slot after the Scell ​​BWP switching.

[0118] Figure 4 A schematic diagram of A-CSI-RS triggering provided by an embodiment, corresponding to the case where the A-CSI-RS triggering delay is 0.

[0119] In one embodiment, when the time domain position corresponding to the trigger is set to the first available time slot after the BWP switching by default, no matter what value the high-level parameter Aperiodic Triggering Offset is configured to, it is set to the first available time slot after the BWP switching by default;

[0120] In one embodiment, when the time domain position corresponding to the trigger is set by default to the first available time slot after the BWP switching, the high-level parameter a Aperiodic Triggering Offset is configured to be 0.

[0121] In one embodiment, the time domain position for triggering the reference signal operation is a time slot corresponding to the sum of the first available time slot after partial bandwidth switching and a second preset offset, where the second preset offset is an integer.

[0122] In one embodiment, the second preset offset is determined based on at least one of the first information or the second information, the first information is pre-configuration information of radio resource control, and the second information is preset bit domain information of re-interpreted switching indication information.

[0123] In one embodiment, the time domain position of the trigger reference signal operation may be the time slot where the sum of the first available time slot after the BWP switching and the second preset offset is located. The second preset offset represents the number of time slots that differ between the first available time slot after the BWP switching and the time domain position of the trigger reference signal operation. For example, if the first available time slot after the SCell BWP switching is m, and the second preset offset is k, then the time domain position of the trigger reference signal is time slot m+k. In this embodiment, the second preset offset corresponds to Figure 4 The A-CSI-RS trigger delay shown is not 0.

[0124] In one embodiment, the second preset offset is RRC preconfigured, and the second preset offset is an integer. For example, the preset offset is preconfigured as 2 through an RRC message, and assuming that the first available time slot after the Scell ​​BWP switching is m, the base station sends the reference signal in the m+2 time slot, and the UE performs relevant measurements in the m+2 time slot.

[0125] In one embodiment, the second preset offset is obtained by reinterpreting a part of the bit field in the switching indication information, and the second preset offset is an integer. The reinterpretation of the partial bit field in the switching indication information is obtained by indicating all or part of the bits in the partial bit field in the switching indication message, for example, the time domain position of the trigger is indicated by the information of the carrier indicator field (CIF), or the time domain position of the trigger is indicated by the information of the frequency domain resource allocation field, or the time domain position of the trigger is indicated by the information of the time domain resource allocation field, or the time domain position of the trigger is indicated by the information of the preset bit field already existing in the DCI message. For example, the carrier indicator field 3 bits (A1A2A3) are used to indicate a maximum of 8 values, or the MSB3 bits (A1A2A3) of the time domain resource allocation field are used, or the MSB3 bits (A1A2A3) of the frequency domain resource allocation field are used. Table 4 is a comparison table of the second preset offset and the preset bit field 3 bits.

[0126] Table 4 Comparison table of the second preset offset and the preset bit field 3 bits

[0127] A1A2A3 Offset2 000 0 001 1 010 2 011 3 100 4 101 5 110 6 111 7

[0128] In one embodiment, for frequency range 2 (FR2), the time domain position for triggering the reference signal operation is to add a third preset offset to the original CSI-RS scheduling delay (CSI-RS Scheduling offset, equal to Y+d), and obtain a new CSI-RS scheduling delay of Y+d+offset3, where Y refers to the beam switching timing threshold (threshold beamSwitchTiming) reported by the UE. If the subcarrier spacing of the PDCCH is equal to the subcarrier spacing of the CSI-RS, then d=0. If the subcarrier spacing of the PDCCH is not equal to the subcarrier spacing of the CSI-RS, then The third preset offset offset3 is obtained based on the BWP switching delay.

[0129] In one embodiment, the time unit of the new CSI-RS scheduling delay Y+d+offset3 is a symbol.

[0130] In one embodiment, the starting symbol of the new CSI-RS scheduling delay Y+d+offset3 is the starting position of the first symbol in the first available time slot of the BWP after switching.

[0131] In one embodiment, the starting symbol of the new CSI-RS scheduling delay Y+d+offset3 may be the end position of the last symbol of the control channel in the first available time slot of the BWP after the switching.

[0132] In one embodiment, the starting symbol of the new CSI-RS scheduling delay Y+d+offset3 may be the end position of the last symbol of the control channel corresponding to the switching DCI.

[0133] In one embodiment, the reference signal is an aperiodic sounding reference signal (A-SRS).

[0134] In one embodiment, the triggering position of the non-periodic sounding reference signal is the time slot where the sum of the first available time slot after the Scell ​​BWP switching and the fourth preset offset is located.

[0135] In one embodiment, the fourth preset offset is preconfigured by RRC, or the fourth preset offset is obtained by reinterpreting a part of the bit field in the switching indication information, and the fourth preset offset is an integer. The fourth preset offset represents the number of time slots that differ between the first available time slot after the Scell ​​BWP is switched and the trigger position of the non-periodic sounding reference signal. For example, the fourth preset offset is preconfigured as 3 through an RRC message, assuming that the first available time slot after the Scell ​​BWP is switched is n, then the UE sends the sounding reference signal in the n+3 time slot, and the base station performs related measurements in the n+3 time slot.

[0136] This embodiment uses the switching indication information of the downlink control information to trigger the reference signal operation while indicating the BWP switching, thereby accelerating the completion of channel tracking and channel measurement, reducing the control channel overhead, and achieving the effect of fast SCell activation.

[0137] Figure 5 FIG. 1 is a flow chart of a partial bandwidth switching method provided by an embodiment. Figure 5 As shown, the method is applied to a user terminal and includes step S100 and step S200.

[0138] Step S100: receiving switching indication information sent by a service node, wherein the switching indication information includes a switching time slot offset of a partial bandwidth switching process of each cell in the service node, and a switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs.

[0139] Step S200: Perform partial bandwidth bundling switching according to the switching indication information.

[0140] In one embodiment, the cell is an active cell or a passive cell, the active cell is a cell in the service node that actively initiates partial bandwidth switching, and the passive cell is a cell in the service node that passively initiates partial bandwidth switching.

[0141] In one embodiment, the handover indication information sent by the service node to the UE indicates the handover time slot offset of the active cell to each cell. In this case, the UE determines the handover time slot offset of each cell according to the received handover time slot offset of the active cell.

[0142] In one embodiment, before performing partial bandwidth bundling switching according to the switching indication information, the method further includes:

[0143] Determine the handover time slot offset of the passive cell according to the received handover time slot offset of the active cell;

[0144] The determining the switching time slot offset of the passive cell according to the received switching time slot offset of the active cell includes:

[0145] The sum of the switching time slot offset of the active cell and a first preset offset is used as the reference time slot number of the passive cell, where the first preset offset is an integer;

[0146] The reference time slot quantity is converted to obtain the switching time slot offset of the passive cell.

[0147] In one embodiment, before performing partial bandwidth bundling switching according to the switching indication information, the method further includes:

[0148] Determine the handover time slot offset of the passive cell according to the received handover time slot offset of the active cell;

[0149] The determining the switching time slot offset of the passive cell according to the received switching time slot offset of the active cell includes:

[0150] Using the handover time slot offset of the active cell as the reference time slot number of the passive cell;

[0151] The sum of the number of time slots converted from the reference number of time slots and a first preset offset is used as the switching time slot offset of the passive cell, and the first preset offset is an integer.

[0152] In one embodiment, the first preset offset is determined according to at least one of first information or second information, the first information is pre-configuration information of radio resource control, and the second information is preset bit domain information of re-interpreted switching indication information.

[0153] In one embodiment, the method further comprises:

[0154] Performing a reference signal operation in a target time slot according to the switching indication information, where the target time slot is the first available time slot after the partial bandwidth switching; or,

[0155] A reference signal operation is performed in a target time slot according to the switching indication information, where the target time slot is a time slot corresponding to a sum of a first available time slot after partial bandwidth switching and a second preset offset, where the second preset offset is an integer.

[0156] In one embodiment, the second preset offset is determined according to at least one of the first information or the second information, the first information is pre-configuration information of the radio resource control, and the second information is preset bit domain information of the re-interpreted switching indication information.

[0157] In one embodiment, the reference signal operation includes at least one of executing a reference signal, executing a reference signal measurement, and executing a reference signal measurement report, and the reference signal is a channel state information reference signal.

[0158] In one embodiment, the reference signal operation includes performing the reference signal operation under preset conditions; the preset conditions include one of the following: the high-level parameter reporting quantity is configured as empty; the high-level parameter detection reference signal information is configured as true; and high-level parameter repeated transmission is enabled.

[0159] In one embodiment, the reference signal operation includes at least one of performing a reference signal and performing a reference signal measurement.

[0160] The embodiment of the present application also provides a partial bandwidth switching device. Figure 6 FIG. 1 is a schematic diagram of a structure of a partial bandwidth switching device provided by an embodiment. Figure 6 As shown, the device comprises:

[0161] A switching time slot determination module 110 is configured to determine a switching time slot offset of a partial bandwidth switching process of each cell in a serving node, wherein a switching delay of each switching time slot offset in a corresponding cell is greater than or equal to a required switching delay of the corresponding cell;

[0162] The sending module 120 is configured to send switching indication information to the user terminal, where the switching indication information includes each of the switching time slot offsets.

[0163] In one embodiment, the cell is an active cell or a passive cell, the active cell is a cell in the service node that actively initiates partial bandwidth switching, and the passive cell is a cell in the service node that passively initiates partial bandwidth switching.

[0164] In one embodiment, the switching time slot determination module 110 is specifically configured as follows:

[0165] Calculating the time delay required for handover of the user terminal in each cell according to the type of the user terminal and the subcarrier spacing type of each cell;

[0166] The switching time slot offsets are determined according to the maximum value of the time delays required for each switching.

[0167] In one embodiment, the switching time slot determination module 110 is specifically configured as follows:

[0168] Determine a user terminal type according to the user terminal capability, the user terminal type including a first type and a second type;

[0169] Calculating the time delay required for switching the user terminal type corresponding to each subcarrier spacing type,

[0170] The switching time slot offsets are determined according to the maximum value of the time delays required for each switching.

[0171] In one embodiment, determining each of the switching time slot offsets according to the maximum value of each switching required delay includes:

[0172] Finding the time slot offset required for switching of the user terminal in the active cell according to the maximum value;

[0173] Determine an integer greater than or equal to the time slot offset required for the handover as the handover time slot offset of the active cell;

[0174] The switching time slot offset of the passive cell is obtained by converting the switching time slot offset of the active cell.

[0175] In one embodiment, the switching delay of each of the switching time slot offsets in the corresponding cell is greater than or equal to the maximum value.

[0176] In one embodiment, the switching time slot determination module 110 is specifically configured as follows:

[0177] Finding a time slot offset required for handover of the user terminal in the active cell according to the user terminal type and the subcarrier spacing type of the active cell;

[0178] Determine an integer greater than or equal to the time slot offset required for the handover as the handover time slot offset of the active cell;

[0179] The switching time slot offset of the passive cell is determined according to the switching time slot offset of the active cell.

[0180] In one embodiment, determining the switching time slot offset of the passive cell according to the switching time slot offset of the active cell includes:

[0181] The sum of the switching time slot offset of the active cell and a first preset offset is used as the reference time slot number of the passive cell, where the first preset offset is an integer;

[0182] The reference time slot quantity is converted to obtain the switching time slot offset of the passive cell.

[0183] In one embodiment, determining the switching time slot offset of the passive cell according to the switching time slot offset of the active cell includes:

[0184] Using the handover time slot offset of the active cell as the reference time slot number of the passive cell;

[0185] The sum of the number of time slots converted from the reference number of time slots and a first preset offset is used as the switching time slot offset of the passive cell, and the first preset offset is an integer.

[0186] In one embodiment, the first preset offset is determined according to at least one of first information or second information, the first information is pre-configuration information of radio resource control, and the second information is preset bit domain information of re-interpreted switching indication information.

[0187] In one embodiment, the sending module 120 is specifically configured as follows:

[0188] Sending switching indication information to the user terminal via downlink control information;

[0189] The switching time slot offset includes at least one of a first switching time slot offset and a second switching time slot offset, wherein the first switching time slot offset is a switching time slot offset of an uplink portion of bandwidth, and the second switching time slot offset is a switching time slot offset of a downlink portion of bandwidth.

[0190] In one embodiment, the active cell and the passive cell are in a partial bandwidth bundling switching relationship, the active cell is a primary cell or a secondary cell, and the passive cell is a secondary cell.

[0191] In one embodiment, the switching indication information is further configured to trigger a reference signal operation, the reference signal operation includes at least one of a reference signal, a reference signal measurement, and a reference signal measurement report, and the reference signal is a channel state information reference signal.

[0192] In one embodiment, the switching indication information is also configured to trigger a reference signal operation under preset conditions; the preset conditions include at least one of the following: the high-level parameter reporting quantity is configured as empty; the high-level parameter detection reference signal information is configured as true; and high-level parameter repeated transmission is enabled.

[0193] In one embodiment, the switching indication information is further configured to trigger a reference signal operation, the reference signal operation includes at least one of a reference signal and a reference signal measurement, and the reference signal is a sounding reference signal.

[0194] In one embodiment, the switching indication information is downlink control information of downlink authorization.

[0195] In one embodiment, the time domain position for triggering the reference signal operation is the first available time slot after partial bandwidth switching.

[0196] In one embodiment, the time domain position for triggering the reference signal operation is a time slot corresponding to the sum of the first available time slot after partial bandwidth switching and a second preset offset, where the second preset offset is an integer.

[0197] In one embodiment, the second preset offset is determined based on at least one of the first information or the second information, the first information is pre-configuration information of radio resource control, and the second information is preset bit domain information of re-interpreted switching indication information.

[0198] In one embodiment, the device further comprises:

[0199] The reference signal sending module is configured to send a reference signal to a user terminal.

[0200] The embodiment of the present application also provides a partial bandwidth switching device. Figure 7 FIG. 1 is a schematic diagram of a structure of a partial bandwidth switching device provided by an embodiment. Figure 7 As shown, the device comprises:

[0201] The receiving module 210 is configured to receive the switching indication information sent by the service node, wherein the switching indication information includes the switching time slot offset of the partial bandwidth switching process of each cell in the service node, and the switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to the required switching delay of the cell to which it belongs;

[0202] The switching module 220 is configured to perform partial bandwidth bundling switching according to the switching indication information.

[0203] In one embodiment, the cell is an active cell or a passive cell, the active cell is a cell in the service node that actively initiates partial bandwidth switching, and the passive cell is a cell in the service node that passively initiates partial bandwidth switching.

[0204] In one embodiment, the device further comprises a processing module, and the processing module is configured to:

[0205] Before performing partial bandwidth bundling switching according to the switching indication information, determining the switching time slot offset of the passive cell according to the received switching time slot offset of the active cell;

[0206] The determining the switching time slot offset of the passive cell according to the received switching time slot offset of the active cell includes:

[0207] The sum of the switching time slot offset of the active cell and a first preset offset is used as the reference time slot number of the passive cell, where the first preset offset is an integer;

[0208] The reference time slot quantity is converted to obtain the switching time slot offset of the passive cell.

[0209] In one embodiment, the processing module is specifically configured to:

[0210] Determine the handover time slot offset of the passive cell according to the received handover time slot offset of the active cell;

[0211] The determining the switching time slot offset of the passive cell according to the received switching time slot offset of the active cell includes:

[0212] Using the handover time slot offset of the active cell as the reference time slot number of the passive cell;

[0213] The sum of the number of time slots converted from the reference number of time slots and a second preset offset is used as the switching time slot offset of the passive cell, and the second preset offset is an integer.

[0214] In one embodiment, the device further includes an execution module, and the execution module is configured to:

[0215] Performing a reference signal operation in a target time slot according to the switching indication information, where the target time slot is the first available time slot after the partial bandwidth switching; or,

[0216] A reference signal operation is performed in a target time slot according to the switching indication information, where the target time slot is a time slot corresponding to a sum of a first available time slot after partial bandwidth switching and a third preset offset, where the third preset offset is an integer.

[0217] In one embodiment, the reference signal operation includes at least one of executing a reference signal, executing a reference signal measurement, and executing a reference signal measurement report, and the reference signal is a channel state information reference signal.

[0218] In one embodiment, the reference signal operation includes performing the reference signal operation under preset conditions; the preset conditions include one of the following: the high-level parameter reporting quantity is configured as empty; the high-level parameter detection reference signal information is configured as true; and high-level parameter repeated transmission is enabled.

[0219] In one embodiment, the reference signal operation includes at least one of executing a reference signal and performing a reference signal measurement, and the reference signal is a sounding reference signal.

[0220] In one embodiment, the device further comprises:

[0221] The measurement module is configured to measure the reference signal sent by the service node.

[0222] In one embodiment, the measurement includes performing time-frequency synchronization on a reference signal sent by a serving node, or measuring channel state information.

[0223] In one embodiment, the device further comprises:

[0224] The reporting module is configured to report the reference signal measurement result to the service node.

[0225] The embodiment of the present application also provides a method for realizing fast Scell ​​activation. The method includes: a base station sends a DCI message to a UE, wherein the DCI message includes a switching indication message, which is configured to indicate that a BWP switching occurs in the Scell ​​through a cross-carrier scheduling cell, or that a BWP bundle of an active cell indicates that a BWP switching occurs in the Scell, or that a BWP switching occurs in the Scell ​​through a self-scheduling Scell.

[0226] In one embodiment, the DCI message is further configured to trigger a reference signal;

[0227] In one embodiment, the DCI message is further configured to trigger reference signal measurement;

[0228] In one embodiment, the DCI message is further configured to trigger reference signal measurement reporting;

[0229] In one embodiment, the DCI message carries both a BWP switching command and a reference signal triggering command.

[0230] In one embodiment, the DCI message carries both a BWP switching command and a reference signal measurement triggering command.

[0231] In one embodiment, the DCI message carries both a BWP switching command and a reference signal measurement and reporting triggering command.

[0232] In one embodiment, the reference signal may be an aperiodic channel state information reference signal (A-CSI-RS).

[0233] In one embodiment, the reference signal may be a semi-persistent channel state information reference signal (SP-CSI-RS).

[0234] In one embodiment, the reference signal may be an aperiodic tracking reference signal (A-TRS).

[0235] In one embodiment, the reference signal may be a semi-persistent tracking reference signal (SP-TRS).

[0236] In one embodiment, the reference signal measurement refers to channel state information measurement, including channel measurement and interference measurement, and CSI parameters such as CRI / RI / PMI / CQI are calculated based on the measurement results, for example, channel state information measurement is performed based on a non-periodic channel state information reference signal.

[0237] In one embodiment, the reference signal measurement reporting refers to the terminal feeding back CSI to the base station.

[0238] In one embodiment, the switching indication information may be a downlink grant DCI.

[0239] In one embodiment, the downlink DCI can trigger CSI-RS and / or CSI-RS measurement only when the higher layer parameter Report Quantity is set to none or the higher layer parameter Trs-Info or Repetition is enabled.

[0240] In one embodiment, the time domain position of triggering the reference signal is the first available time slot after the BWP switching.

[0241] In one embodiment, the time domain position of the trigger reference signal is the time slot where the sum of the first available time slot after the BWP switching and the second preset offset is located.

[0242] In one embodiment, the second preset offset is RRC preconfigured or obtained by reinterpreting a portion of the bit field in the switching indication information, and the second preset offset is an integer.

[0243] In one embodiment, the second preset offset is indicated by preset bit field information in a partial bit field in the switching indication message.

[0244] In this embodiment, the reference signal operation is triggered while completing the BWP switching through the same DCI, so as to accelerate the completion of channel tracking and channel measurement, reduce the control channel overhead, and achieve the effect of fast scell activation.

[0245] The embodiment of the present application also provides a service node. The partial bandwidth switching method applied to the service node in the above embodiment can be executed by a partial bandwidth switching device, which can be implemented by software and / or hardware and integrated in the service node.

[0246] Figure 8 FIG. 1 is a schematic diagram of a structure of a service node provided by an embodiment. Figure 8 As shown, a service node provided in this embodiment includes: a processor 51 and a storage device 52. The processor in the service node may be one or more, Figure 8Taking a service node 51 as an example, the processor 51 and the storage device 52 in the service node may be connected via a bus or other means. Figure 8 The example of connecting through bus is taken in the following.

[0247] The one or more programs are executed by the one or more processors 51, so that the one or more processors implement the partial bandwidth switching method applied to a service node described in any one of the above embodiments.

[0248] The storage device 52 in the service node is a computer-readable storage medium and can be used to store one or more programs, which can be software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the resource scheduling method in the embodiment of the present invention (for example, the attached Figure 6 The modules in the partial bandwidth switching device shown include: a switching time slot determination module 110 and a sending module 120). The processor 51 executes various functional applications and data processing of the device by running the software programs, instructions and modules stored in the storage device 52, that is, the partial bandwidth switching method applied to the service node in the above method embodiment is implemented.

[0249] The storage device 52 mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required for a function; the data storage area can store data created according to the use of the device, etc. (such as the cell network information in the above embodiment, etc.). In addition, the storage device 52 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the storage device 52 may further include a memory remotely arranged relative to the processor 51, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0250] Furthermore, when one or more programs included in the service node are executed by the one or more processors 51, the partial bandwidth switching method applied to the service node in the above method embodiment is implemented.

[0251] The service node proposed in this embodiment and the partial bandwidth switching method applied to the service node proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as executing the partial bandwidth switching method.

[0252] The embodiment of the present application also provides a user terminal. The partial bandwidth switching method applied to the user terminal in the above embodiment can be executed by a partial bandwidth switching device, which can be implemented by software and / or hardware and integrated in the user terminal.

[0253] Fig. 9 FIG. 1 is a schematic diagram of a user terminal structure provided by an embodiment. Fig. 9 As shown, a user terminal provided in this embodiment includes: a processor 61 and a storage device 62. The processor in the user terminal may be one or more, Fig. 9 Taking a user terminal 61 as an example, the processor 61 and the storage device 62 in the user terminal may be connected via a bus or other means. Fig. 9 The example of connecting through bus is taken in the following.

[0254] The one or more programs are executed by the one or more processors 61, so that the one or more processors implement the partial bandwidth switching method applied to the user terminal described in any one of the above embodiments.

[0255] The storage device 62 in the user terminal is a computer-readable storage medium and can be used to store one or more programs, which can be software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the resource scheduling method in the embodiment of the present invention (for example, the attached Figure 7 The modules in the partial bandwidth switching device shown include: a receiving module 210 and a switching module 220). The processor 61 executes various functional applications and data processing of the device by running the software programs, instructions and modules stored in the storage device 62, that is, the partial bandwidth switching method applied to the user terminal in the above method embodiment is implemented.

[0256] The storage device 62 mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required for a function; the data storage area can store data created according to the use of the device, etc. (such as the cell network information in the above embodiment, etc.). In addition, the storage device 62 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the storage device 62 may further include a memory remotely arranged relative to the processor 61, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0257] Furthermore, when one or more programs included in the user terminal are executed by the one or more processors 61, the partial bandwidth switching method applied to the user terminal in the above method embodiment is implemented.

[0258] The user terminal proposed in this embodiment and the partial bandwidth switching method applied to the user terminal proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as executing the partial bandwidth switching method.

[0259] The embodiment of the present application also provides a storage medium containing computer executable instructions, and the computer executable instructions are used to perform a partial bandwidth switching method when executed by a computer processor.

[0260] In one embodiment, the method includes: when the user terminal operates in the first type of network, detecting a cell of the second type of network; reporting cell network information to a service node of the first type of network, the cell network information including network information corresponding to the detected target cell of the second type of network.

[0261] In one embodiment, the method includes: determining a switching time slot offset for a partial bandwidth switching process of each cell in a service node, wherein a switching delay of each of the switching time slot offsets in the cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs; and sending switching indication information to a user terminal, wherein the switching indication information includes each of the switching time slot offsets.

[0262] In one embodiment, the method includes: receiving switching indication information sent by a service node, the switching indication information including a switching time slot offset of a partial bandwidth switching process of each cell in the service node, the switching delay of each switching time slot offset in the cell to which it belongs being greater than or equal to the required switching delay of the cell to which it belongs; and performing partial bandwidth bundling switching according to the switching indication information.

[0263] Through the above description of the implementation method, the technical personnel in the relevant field can understand that the present application can be implemented by means of software and general hardware, or by hardware. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including multiple instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the method described in any embodiment of the present application.

[0264] The above description is merely an exemplary embodiment of the present application and is not intended to limit the protection scope of the present application.

[0265] The block diagram of any logic flow in the accompanying drawings of the present application can represent program steps, or can represent interconnected logic circuits, modules and functions, or can represent a combination of program steps and logic circuits, modules and functions. The computer program can be stored on a memory. The memory can have any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory device and system (digital versatile disc DVD or CD disc), etc. Computer-readable media may include non-transient storage media. The data processor can be any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (FGPA) and a processor based on a multi-core processor architecture.

[0266] By way of exemplary and non-limiting examples, a detailed description of exemplary embodiments of the present application has been provided above. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, but will not depart from the scope of the present invention. Therefore, the proper scope of the present invention will be determined according to the claims.

Claims

1. A partial bandwidth switching method, characterized in that: include: Determine a switching time slot offset of a partial bandwidth switching process of each cell in the serving node, wherein a switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs; Sending switching indication information to a user terminal, wherein the switching indication information includes each of the switching time slot offsets; The switching indication information is further configured to trigger a reference signal operation, wherein the reference signal operation includes at least one of a reference signal, a reference signal measurement, and a reference signal measurement report, and the reference signal is a channel state information reference signal; or, The switching indication information is further configured to trigger a reference signal operation, wherein the reference signal operation includes at least one of a reference signal and a reference signal measurement, and the reference signal is a sounding reference signal.

2. The method according to claim 1, characterized in that The cell is an active cell or a passive cell. The active cell is a cell in the service node that actively initiates partial bandwidth switching, and the passive cell is a cell in the service node that passively initiates partial bandwidth switching.

3. The method according to claim 2, characterized in that The determining of the switching time slot offset of the partial bandwidth switching process of each cell in the serving node includes: Calculating the time delay required for handover of the user terminal in each cell according to the type of the user terminal and the subcarrier spacing type of each cell; The switching time slot offsets are determined according to the maximum value of the time delays required for each switching.

4. The method according to claim 2, characterized in that: Determining a handover time slot offset for a partial bandwidth handover process of each cell in a serving node includes: Determine a user terminal type according to the user terminal capability, the user terminal type including a first type and a second type; Calculating the time delay required for switching the user terminal type corresponding to each subcarrier spacing type, The switching time slot offsets are determined according to the maximum value of the time delays required for each switching.

5. The method according to claim 3 or 4, characterized in that: Determining each of the switching time slot offsets according to the maximum value of each switching required delay includes: Finding the time slot offset required for switching of the user terminal in the active cell according to the maximum value; Determine an integer greater than or equal to the time slot offset required for the handover as the handover time slot offset of the active cell; The switching time slot offset of the passive cell is obtained by converting the switching time slot offset of the active cell.

6. The method according to claim 5, characterized in that The switching delay of each switching time slot offset in the cell to which it belongs is greater than or equal to the maximum value.

7. The method according to claim 2, characterized in that Determining a handover time slot offset for a partial bandwidth handover process of each cell in a serving node includes: Finding a time slot offset required for handover of the user terminal in the active cell according to the user terminal type and the subcarrier spacing type of the active cell; Determine an integer greater than or equal to the time slot offset required for the handover as the handover time slot offset of the active cell; The switching time slot offset of the passive cell is determined according to the switching time slot offset of the active cell.

8. The method according to claim 7, characterized in that The determining the switching time slot offset of the passive cell according to the switching time slot offset of the active cell comprises: The sum of the switching time slot offset of the active cell and a first preset offset is used as the reference time slot number of the passive cell, where the first preset offset is an integer; The reference time slot quantity is converted to obtain the switching time slot offset of the passive cell.

9. The method according to claim 7, characterized in that: The determining the switching time slot offset of the passive cell according to the switching time slot offset of the active cell comprises: Using the handover time slot offset of the active cell as the reference time slot number of the passive cell; The sum of the number of time slots converted from the reference number of time slots and a first preset offset is used as the switching time slot offset of the passive cell, and the first preset offset is an integer.

10. The method according to claim 8 or 9, characterized in that: The first preset offset is determined according to at least one of first information or second information, the first information is pre-configuration information of radio resource control, and the second information is preset bit domain information of re-interpreted switching indication information.

11. The method according to claim 1, characterized in that Sending switching indication information to the user terminal includes: Sending switching indication information to the user terminal via downlink control information; The switching time slot offset includes at least one of a first switching time slot offset and a second switching time slot offset, wherein the first switching time slot offset is a switching time slot offset of an uplink portion of bandwidth, and the second switching time slot offset is a switching time slot offset of a downlink portion of bandwidth.

12. The method according to claim 2, characterized in that: The active cell and the passive cell are in a partial bandwidth bundling switching relationship, the active cell is a primary cell or a secondary cell, and the passive cell is a secondary cell.

13. The method according to claim 1, characterized in that The switching indication information is also configured to trigger a reference signal operation under a preset condition; The preset condition includes at least one of the following: the high-level parameter reporting quantity is configured as empty; the high-level parameter detection reference signal information is configured as true; and the high-level parameter repeated transmission is enabled.

14. The method according to claim 1, characterized in that The switching indication information is downlink control information of downlink authorization.

15. The method according to claim 1, characterized in that The time domain position for triggering the reference signal operation is the first available time slot after partial bandwidth switching.

16. The method according to claim 1, characterized in that The time domain position for triggering the reference signal operation is a time slot corresponding to the sum of the first available time slot after partial bandwidth switching and a second preset offset, where the second preset offset is an integer.

17. The method according to claim 16, characterized in that The second preset offset is determined according to at least one of the first information or the second information, the first information is pre-configuration information of radio resource control, and the second information is preset bit domain information of re-interpreted switching indication information.

18. A partial bandwidth switching method, characterized in that: include: Receiving handover indication information sent by the service node, the handover indication information including a handover time slot offset of a partial bandwidth handover process of each cell in the service node, and a handover delay of each handover time slot offset in a corresponding cell is greater than or equal to a required handover delay of the corresponding cell; Performing partial bandwidth bundling switching according to the switching indication information; The method further comprises: Performing a reference signal operation in a target time slot according to the switching indication information, wherein the target time slot is the first available time slot after the partial bandwidth switching; or, Performing a reference signal operation in a target time slot according to the switching indication information, where the target time slot is a time slot corresponding to a sum of a first available time slot after partial bandwidth switching and a second preset offset, where the second preset offset is an integer; The reference signal operation includes at least one of executing a reference signal, executing reference signal measurement, and executing reference signal measurement reporting, and the reference signal is a channel state information reference signal; or, The reference signal operation includes at least one of executing a reference signal and performing a reference signal measurement, and the reference signal is a sounding reference signal.

19. The method according to claim 18, characterized in that The cell is an active cell or a passive cell. The active cell is a cell in the service node that actively initiates partial bandwidth switching, and the passive cell is a cell in the service node that passively initiates partial bandwidth switching.

20. The method according to claim 19, characterized in that Before performing partial bandwidth bundling switching according to the switching indication information, the method further includes: Determine the handover time slot offset of the passive cell according to the received handover time slot offset of the active cell; The determining the switching time slot offset of the passive cell according to the received switching time slot offset of the active cell comprises: The sum of the switching time slot offset of the active cell and a first preset offset is used as the reference time slot number of the passive cell, where the first preset offset is an integer; The reference time slot quantity is converted to obtain the switching time slot offset of the passive cell.

21. The method according to claim 19, characterized in that Before performing partial bandwidth bundling switching according to the switching indication information, the method further includes: Determine the handover time slot offset of the passive cell according to the received handover time slot offset of the active cell; The determining the switching time slot offset of the passive cell according to the received switching time slot offset of the active cell comprises: Using the handover time slot offset of the active cell as the reference time slot number of the passive cell; The sum of the number of time slots converted from the reference number of time slots and a first preset offset is used as the switching time slot offset of the passive cell, and the first preset offset is an integer.

22. The method according to claim 18, characterized in that The reference signal operation includes performing the reference signal operation under a preset condition; the preset condition includes one of the following: the high-level parameter reporting quantity configuration is empty; The high-level parameter detection reference signal information configuration is true; And, the higher layer parameter Repeat Transmission Enable is configured to On.

23. A partial bandwidth switching device, characterized in that: include: A switching time slot determination module, configured to determine a switching time slot offset of a partial bandwidth switching process of each cell in a serving node, wherein a switching delay of each switching time slot offset in a cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs; A sending module, configured to send switching indication information to a user terminal, wherein the switching indication information includes each of the switching time slot offsets; The switching indication information is further configured to trigger a reference signal operation, wherein the reference signal operation includes at least one of a reference signal, a reference signal measurement, and a reference signal measurement report, and the reference signal is a channel state information reference signal; or, The switching indication information is further configured to trigger a reference signal operation, wherein the reference signal operation includes at least one of a reference signal and a reference signal measurement, and the reference signal is a sounding reference signal.

24. The device according to claim 23, characterized in that The device also includes: The reference signal sending module is configured to send a reference signal to a user terminal.

25. A partial bandwidth switching device, characterized in that: include: A receiving module, configured to receive switching indication information sent by a service node, wherein the switching indication information includes a switching time slot offset of a partial bandwidth switching process of each cell in the service node, and a switching delay of each switching time slot offset in a cell to which it belongs is greater than or equal to a required switching delay of the cell to which it belongs; A switching module, configured to perform partial bandwidth bundling switching according to the switching indication information; The device also includes: An execution module, configured to perform a reference signal operation in a target time slot according to the switching indication information, wherein the target time slot is a first available time slot after partial bandwidth switching; Alternatively, performing a reference signal operation in a target time slot according to the switching indication information, the target time slot being a time slot corresponding to a sum of a first available time slot after partial bandwidth switching and a second preset offset, where the second preset offset is an integer; The reference signal operation includes at least one of executing a reference signal, executing reference signal measurement, and executing reference signal measurement reporting, and the reference signal is a channel state information reference signal; or, The reference signal operation includes at least one of executing a reference signal and performing a reference signal measurement, and the reference signal is a sounding reference signal.

26. The device according to claim 25, characterized in that The device also includes: The measurement module is configured to measure the reference signal sent by the service node.

27. The device according to claim 25, characterized in that The device also includes: The reporting module is configured to report the reference signal measurement result to the service node.

28. A service node, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the partial bandwidth switching method as described in any one of claims 1-17.

29. A terminal, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the partial bandwidth switching method as described in any one of claims 18-22.

30. A storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the partial bandwidth switching method as described in any one of claims 1-22 is implemented.

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