WO2022083583A1 - 小区切换方法、终端、基站、装置和存储介质 - Google Patents

小区切换方法、终端、基站、装置和存储介质 Download PDF

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Publication number
WO2022083583A1
WO2022083583A1 PCT/CN2021/124701 CN2021124701W WO2022083583A1 WO 2022083583 A1 WO2022083583 A1 WO 2022083583A1 CN 2021124701 W CN2021124701 W CN 2021124701W WO 2022083583 A1 WO2022083583 A1 WO 2022083583A1
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Prior art keywords
cell
csi
resource
resource set
measurement result
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PCT/CN2021/124701
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English (en)
French (fr)
Inventor
李辉
陈润华
高秋彬
骆亚娟
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大唐移动通信设备有限公司
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Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to US18/250,216 priority Critical patent/US20230422109A1/en
Priority to EP21881999.3A priority patent/EP4236435A4/en
Publication of WO2022083583A1 publication Critical patent/WO2022083583A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment

Definitions

  • the present disclosure relates to the field of wireless communication technologies, and in particular, to a cell handover method, terminal, base station, device, and storage medium.
  • a terminal in a communication state moves from one cell to another, or the link quality of the serving cell deteriorates, in order to ensure the continuity of communication, the network needs to switch the terminal to another cell.
  • a cell continues to provide services for the terminal, that is, cell handover is performed.
  • the cell handover of the NR (New RAT, new air interface) system has a large delay.
  • the cell handover delay will reduce the data transmission quality, resulting in that the reliability of the link cannot be guaranteed.
  • Embodiments of the present disclosure provide a cell handover method, a terminal, a base station, an apparatus, and a storage medium, so as to solve the existing problem of relatively large cell handover delay.
  • an embodiment of the present disclosure provides a cell handover method, including:
  • the measurement result of at least one cell in the multiple cells is sent to the base station of the current cell, so that the base station of the current cell makes a cell handover decision based on the received measurement result of the at least one cell.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration; or,
  • Each CSI-RS resource set corresponds to one cell, each CSI-RS resource set in the multiple CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations correspond to one CSI reporting state; or ,
  • Each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • performing cell measurement on multiple cells based on multiple channel state information reference signal CSI-RS resource sets includes:
  • the instructions in the CSI reporting configuration perform Layer 1 reference signal received power L1-RSRP measurement, layer 1 reference signal received power L1-RSRP measurement for spatial filtering, and Layer 3 reference signal received power L1-RSRP measurement for the CSI-RS resource set corresponding to each CSI reporting configuration One or more of signal received power L3-RSRP measurement, and spatially filtered layer 3 reference signal received power L3-RSRP measurement.
  • performing Layer 1 reference signal received power L1-RSRP measurement on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • a measurement result corresponding to each CSI reporting configuration is determined.
  • the layer 1 reference signal received power L1-RSRP measurement that performs spatial filtering on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • L1-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L1-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • performing Layer 3 reference signal received power L3-RSRP measurement on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • a measurement result corresponding to each CSI reporting configuration is determined based on the L3-RSRP measurement value of each CSI-RS resource.
  • the layer 3 reference signal received power L3-RSRP measurement that performs spatial filtering on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • L3-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L3-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • each CSI-RS resource set is configured with a cell ID of the corresponding cell.
  • the measurement result of the at least one cell includes a cell ID of the at least one cell, a set index of the CSI-RS resource set corresponding to the at least one cell, and a set index of the CSI-RS resource set corresponding to the at least one cell. at least one of the optimal measurement value and resource index of the CSI-RS resources in the CSI-RS resource set, and the precoding indication PMI of the CSI-RS resource set corresponding to the at least one cell.
  • the sending the measurement result of at least one cell in the multiple cells to the base station of the current cell includes:
  • the measurement result of at least one cell in the multiple cells is sent to the base station of the current cell.
  • the predefined rule includes that there are neighbor cells whose measurement results are better than the current cell, or the number of times that the measurement result of any neighbor cell is better than the measurement result of the current cell is greater than a preset number of times.
  • the sending the measurement result of at least one cell in the multiple cells to the base station of the current cell includes:
  • the optimal measurement result among the measurement results of the multiple cells is sent to the base station of the current cell.
  • the sending the measurement result of at least one cell in the multiple cells to the base station of the current cell based on a predefined rule includes:
  • the measurement result of the at least one cell is sent to the base station of the current cell through random access resource or uplink resource request.
  • the sending the measurement result of at least one cell in the multiple cells to the base station of the current cell further includes:
  • the receiving the random access response message fed back by the base station of the target cell based on the random access preamble sequence further includes:
  • the random access response message includes timing advance information, access the target cell based on the timing advance information in the random access response message;
  • the timing advance information of the target cell is determined from the timing advance information of at least one cell preconfigured by the base station of the current cell, and the target cell is accessed based on the timing advance information of the target cell.
  • the sending a random access preamble sequence to the base station of the target cell to be handed over includes:
  • the base station of the target cell sends the random access preamble sequence.
  • an embodiment of the present disclosure provides a cell handover method, including:
  • the measurement result of the at least one cell is that the terminal performs a cell-to-cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells. measured;
  • a cell handover decision is made based on the measurement result of the at least one cell.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration; or,
  • Each CSI-RS resource set corresponds to one cell, each CSI-RS resource set in the multiple CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations correspond to one CSI reporting state; or ,
  • Each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • the measurement result of at least one cell sent by the receiving terminal further includes:
  • the resource set configuration information includes configuration information of a number of CSI-RS resource sets of cells, and the configuration information of each CSI-RS resource set includes a cell ID of a corresponding cell.
  • the measurement result of the at least one cell includes a cell ID of the at least one cell, a set index of the CSI-RS resource set corresponding to the at least one cell, and a set index of the CSI-RS resource set corresponding to the at least one cell.
  • the optimal measurement value is an optimal value of the layer 1 reference signal received power L1-RSRP measurement value corresponding to all CSI-RS resources in the CSI-RS resource set.
  • the measurement result of the at least one cell is configured by the terminal based on the measurement result reporting of the base station of the current cell, and/or sent based on a predefined rule.
  • the predefined rule includes that there are neighbor cells whose measurement results are better than the current cell, or the number of times that the measurement result of any neighbor cell is better than the measurement result of the current cell is greater than a preset number of times.
  • the measurement result of the at least one cell is an optimal measurement result among the measurement results of the multiple cells.
  • the measurement result of the at least one cell is sent by the terminal through a random access resource or uplink resource request when the predefined rule is satisfied.
  • Timing advance information or timing advance adjustment information of at least one cell Sending timing advance information or timing advance adjustment information of at least one cell to the terminal, where the timing advance information and the timing advance adjustment information are used for the terminal to access the target cell.
  • an embodiment of the present disclosure provides a terminal, including a memory, a processor, and a program stored in the memory and running on the processor, where the processor implements the following steps when executing the program:
  • the measurement result of at least one cell in the plurality of cells is sent to the base station of the current cell, so that the base station of the current cell makes a cell handover decision based on the received measurement result of the at least one cell.
  • an embodiment of the present disclosure provides a base station, including a memory, a processor, and a program stored in the memory and executable on the processor, where the processor implements the following steps when executing the program:
  • the measurement result of the at least one cell is that the terminal performs a cell-to-cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells. measured;
  • a cell handover decision is made based on the measurement result of the at least one cell.
  • an embodiment of the present disclosure provides a cell handover device, including:
  • a cell measurement unit configured to perform cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells;
  • a result sending unit configured to send the measurement result of at least one cell in the plurality of cells to the base station of the current cell, so that the base station of the current cell can perform cell handover based on the received measurement result of the at least one cell judgment.
  • an embodiment of the present disclosure provides a cell handover device, including:
  • a result receiving unit configured to receive the measurement result of at least one cell sent by the terminal; the measurement result of the at least one cell is that the terminal performs the measurement of all the cells based on the multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells. obtained by performing cell measurement on the multiple cells;
  • a handover decision unit configured to make a cell handover decision based on the measurement result of the at least one cell.
  • embodiments of the present disclosure provide a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the method provided in the first aspect or the second aspect .
  • the terminal can perform cell measurement based on a set of CSI-RS resources corresponding to each cell, and then send the measurement result to the base station of the current cell for the cell Switch judgment.
  • the cell measurement based on the CSI-RS resource set can only be implemented in layer 1, and no additional filter needs to be introduced. Therefore, the delay caused by the additional filtering operation can be avoided, the complexity of the cell handover process can be reduced, and the The data transmission quality of the terminal ensures the reliability of the data transmission link.
  • FIG. 1 is a schematic flowchart of a cell handover method provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a cell handover method provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart of a cell handover method provided by another embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a cell switching apparatus provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a cell switching apparatus according to another embodiment of the present disclosure.
  • the term "and/or" describes the association relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist at the same time, and B exists alone these three situations.
  • the character “/” generally indicates that the associated objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • FIG. 1 is a schematic flowchart of a cell handover method provided by an embodiment of the present disclosure. As shown in FIG. 1 , currently in an NR system, a cell handover process includes the following steps:
  • Step 1 the source base station (gNB) performs measurement configuration on the terminal, and the measurement result of the terminal will be used to assist the source base station in making a handover decision;
  • Step 2 the terminal reports the measurement result to the source base station according to the measurement configuration
  • Step 3 the source base station sends a handover command to the terminal, where the handover command carries RRC (Radio Resource Control, Radio Resource Control) reconfiguration information;
  • RRC Radio Resource Control, Radio Resource Control
  • Step 4 the terminal receives the handover command, and performs synchronization with the target base station, specifically, a contention-based or non-contention-based random access procedure can be used to access the target cell;
  • Step 5 the target base station sends data to the terminal.
  • the measurement configuration performed by the source base station on the terminal in step 1 mainly includes configuring the terminal to measure the SSB (Synchronization Signal and PBCH block, synchronization signal and PBCH block) of the current cell and neighboring cells.
  • the measurement result reported by the terminal to the source base station is layer 3 RSRP (Reference Signal Receiving Power, reference signal received power), which is specifically implemented by introducing an additional filter in layer 3.
  • the source base station After receiving the measurement result, the source base station makes a handover decision by comparing the L3-RSRP of layer 3.
  • L3-RSRP the L3-RSRP of layer 3.
  • an additional filter is required to filter multiple measurement results, resulting in a large delay in cell handover.
  • the above-mentioned handover delay will reduce the quality of data transmission, so that the reliability of the link cannot be guaranteed.
  • FIG. 2 is a schematic flowchart of a cell handover method provided by an embodiment of the present disclosure.
  • the execution subject of the method is a terminal, and the method includes:
  • Step 110 Perform cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells.
  • the multiple cells here include the cell currently accessed by the terminal, that is, the current cell, and also include neighboring cells of the current cell, and the number of neighboring cells may be one or more.
  • a CSI-RS resource set is a set of CSI-RS resources, and each CSI-RS resource set may include one or more CSI-RS resources.
  • a CSI-RS resource set corresponding to each cell may be configured in advance, and the CSI-RS resource set corresponding to each cell may be configured by the base station of the current cell to the terminal.
  • the correspondence between cells and CSI-RS resource sets may be one-to-one correspondence, or each cell may correspond to multiple CSI-RS resource sets, or each CSI-RS resource set may correspond to multiple cells , which is not specifically limited in this embodiment of the present disclosure.
  • the terminal may perform cell measurement on each cell to obtain the measurement result of each cell.
  • the measurement result of the cell specifically reflects the measurement result of the CSI-RS resource set corresponding to the cell.
  • CSI-RS is separately configured for each cell.
  • the resource set is used for cell measurement, which can be implemented only in layer 1.
  • L1-RSRP measurement of the received power of the layer 1 reference signal or L1-RSRP measurement of the received power of the layer 1 reference signal by spatial filtering.
  • Step 120 Send the measurement result of at least one cell in the multiple cells to the base station of the current cell, so that the base station of the current cell can make a cell handover decision based on the received measurement result of the at least one cell.
  • the terminal may select the measurement results of a part of the cells from the measurement results of all the cells and send them to the base station of the current cell.
  • the measurement results of all cells can be directly sent to the base station of the current cell.
  • the at least one cell referred to in step 120 may be one or more cells in all cells, and further may only be the cell with the best measurement result among all cells, or may be all the neighbor cells whose measurement results are better than the current cell. , or all cells whose measurement results are better than a preset threshold, or all cells, which are not specifically limited in this embodiment of the present disclosure.
  • the execution of the sending operation may be performed by the terminal according to the base station configuration of the current cell, or may be triggered and executed by the terminal itself, wherein the condition for the terminal to trigger the execution of the sending operation may be that there is a neighbor cell whose measurement result is better than that of the current cell. , or there are adjacent cells whose measurement results are better than the current cell in multiple consecutive cell measurements, which are not specifically limited in this embodiment of the present disclosure.
  • the base station of the current cell may make a cell handover decision based on the measurement result of the at least one cell.
  • the measurement result of the at least one cell includes the measurement results of the neighbor cell and the current cell. If the measurement result of the neighboring cell is better than the measurement result of the current cell, the base station of the current cell issues a handover command to the terminal, and for example, the measurement result of at least one cell only includes the measurement of the cell with the best measurement result.
  • the base station can determine whether to perform cell handover according to the number of times of receiving the measurement results of the same cell.
  • the method provided by the embodiment of the present disclosure can perform cell measurement based on the CSI-RS resource set corresponding to each cell, and then send the measurement result to the base station of the current cell for cell handover decision.
  • the cell measurement based on the CSI-RS resource set can only be implemented in layer 1, without going through layer 3, and without introducing additional filters in layer 3 for filtering operations, so it can avoid the delay caused by additional filtering operations. , reducing the complexity of the cell handover process, thereby improving the data transmission quality of the terminal and ensuring the reliability of the data transmission link.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration.
  • the CSI-RS resource set corresponds to the cell one-to-one, and the CSI-RS resource set is configured for each cell one-to-one, so that the terminal can perform cell measurement through the CSI-RS resource set corresponding to each cell itself. It helps to realize the parallel cell measurement of multiple cells, thereby further shortening the cell measurement time and reducing the handover delay.
  • the CSI reporting configuration referred to here may include a reporting mechanism for CSI measurement results, such as periodic reporting, semi-persistent reporting, or aperiodic reporting, and may also include information that needs to be included in the reported measurement results.
  • the CSI reporting configuration may Instruct the terminal to periodically report the optimal L1-RSRP measurement value corresponding to each CSI-RS resource set and its corresponding CSI-RS resource index, or instruct the terminal to periodically report the optimal L1-RSRP corresponding to the optimal CSI-RS resource set The measured value and its corresponding CSI-RS resource index, as well as the cell ID corresponding to the optimal CSI-RS resource set, where the optimal CSI-RS resource set is the CSI with the best measurement result in the above multiple CSI-RS resource sets - Collection of RS resources.
  • Associating the above multiple CSI-RS resource sets to the same CSI reporting configuration means that the reporting of the measurement results of the above multiple CSI-RS resource sets needs to be performed according to the information indicated by the same CSI reporting configuration, for example, the CSI reporting configuration
  • the reporting mechanism indicated in is periodic reporting, then the measurement results of the above multiple CSI-RS resource sets need to be reported periodically, and for example, the reported measurement results indicated in the CSI reporting configuration need to include the optimal L1-RSRP measurement value , the measurement results reported by the above multiple CSI-RS resource sets all need to include the optimal L1-RSRP measurement value.
  • N CSI-RS resource sets are associated with one CSI reporting configuration.
  • the terminal may be configured to periodically report the optimal L1-RSRP corresponding to each resource set and its corresponding CSI-RS resource index. Therefore, the terminal reports N L1-RSRP measurement values and N CSI-RS resource indices each time.
  • the CSI-RS resource set i includes M i CSI-RS resources, and the L1-RSRP measurement value of the seventh CSI-RS resource is the largest, which is specifically expressed as Will Perform reporting, and report the index of the seventh CSI-RS resource at the same time.
  • each CSI-RS resource set corresponds to one cell
  • each CSI-RS resource set in the multiple CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations Corresponds to a CSI reporting state.
  • the CSI-RS resource set corresponds to the cell one-to-one, and the CSI-RS resource set is configured for each cell one-to-one, so that the terminal can perform cell measurement through the CSI-RS resource set corresponding to each cell itself. It helps to realize the parallel cell measurement of multiple cells, thereby further shortening the cell measurement time and reducing the handover delay.
  • each CSI-RS resource set is associated with a CSI reporting configuration, so that different CSI-RS resource sets can correspond to The same or different CSI reporting configurations improve the flexibility of CSI reporting.
  • the CSI reporting state is an upper-layer concept of the CSI reporting configuration. Triggering the CSI reporting state can trigger the triggering of all CSI reporting configurations corresponding to the CSI reporting state, and establishes a relationship between one or more CSI reporting configurations and a CSI reporting state. Corresponding relationship, synchronous triggering of CSI reporting configuration can be implemented.
  • each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • a CSI-RS resource set includes at least one CSI-RS resource, a single CSI-RS resource in a single CSI-RS resource set corresponds to a cell, different CSI-RS resources correspond to different cells, and a CSI-RS resource corresponds to a cell
  • the corresponding relationship between them enables the terminal to implement cell measurement through the CSI-RS resources corresponding to each cell itself, which helps to achieve parallel cell measurement of multiple cells, thereby further shortening cell measurement time and reducing handover delay.
  • one CSI-RS resource set is associated with one CSI reporting configuration, so as to realize the unified configuration of CSI reporting of all CSI-RS resources in the CSI-RS resource set.
  • Associating a CSI-RS resource set with a CSI reporting configuration means that the reporting of the measurement results of each CSI-RS resource in a CSI-RS resource set needs to be performed according to the information indicated by the same CSI reporting configuration, for example If the reporting mechanism indicated in the CSI reporting configuration is periodic reporting, the measurement results of all CSI-RS resources in a CSI-RS resource set need to be periodically reported.
  • step 110 includes:
  • the instructions in the CSI reporting configuration perform Layer 1 reference signal received power L1-RSRP measurement, layer 1 reference signal received power L1-RSRP measurement for spatial filtering, and Layer 3 reference signal received power L1-RSRP measurement for the CSI-RS resource set corresponding to each CSI reporting configuration One or more of signal received power L3-RSRP measurement, and spatially filtered layer 3 reference signal received power L3-RSRP measurement.
  • the specific measurement methods can be L1-RSRP measurement of layer 1 reference signal received power, layer 1 reference signal received power L1-RSRP measurement of spatial filtering, and layer 3 reference signal received power L3 - Any one of RSRP measurement, spatially filtered layer 3 reference signal received power L3-RSRP measurement, or a combination of at least two.
  • the layer 1 reference signal received power L1-RSRP measurement and/or the layer 1 reference signal received power L1-RSRP measurement of the spatial filtering is performed on the CSI-RS resource set corresponding to each CSI reporting configuration, but not the layer 1 reference signal received power L1-RSRP measurement.
  • layer 3 reference signal received power L3-RSRP measurement and spatial filtering layer 3 reference signal received power L3-RSRP measurement, cell measurement does not need to go through layer 3, and there is no need to introduce additional filters in layer 3 for filtering operations, so it can be The delay introduced by the additional filtering operation in the original scheme is avoided, and the complexity of the cell handover process is reduced.
  • the layer 1 reference signal received power L1-RSRP measurement and the layer 1 reference signal received power L1-RSRP of the spatial filtering are performed on the CSI-RS resource set corresponding to each CSI reporting configuration.
  • One or more of measurement, layer 3 reference signal received power L3-RSRP measurement, and spatially filtered layer 3 reference signal received power L3-RSRP measurement including:
  • the measurement results of the various measurement modes may be combined to determine the measurement results of the CSI reporting configuration.
  • the performing Layer 1 reference signal received power L1-RSRP measurement on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • a measurement result corresponding to each CSI reporting configuration is determined.
  • the CSI-RS resource set corresponding to each CSI reporting configuration may include one or more CSI-RS resources.
  • L1-RSRP measurement may be performed on each CSI-RS resource set corresponding to each CSI reporting configuration, so as to obtain the The L1-RSRP measurement value of each CSI-RS resource in the CSI-RS resource set corresponding to the CSI reporting configuration.
  • the optimal L1-RSRP measurement value can be selected from each CSI-RS resource set as Corresponding to the L1-RSRP measurement value of the entire CSI-RS resource set, the optimal L1-RSRP measurement value can be added to the measurement result corresponding to the CSI reporting configuration, and the CSI-RSRP measurement value corresponding to the optimal L1-RSRP measurement value can also be added.
  • the resource index of the RS resource is also added to the measurement result corresponding to the CSI reporting configuration, which is not specifically limited in this embodiment of the present disclosure.
  • the layer 1 reference signal received power L1-RSRP measurement for spatial filtering of the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • L1-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L1-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • the CSI-RS resource set corresponding to each CSI reporting configuration may include one or more CSI-RS resources.
  • L1-RS can be performed on each CSI-RS resource in the CSI-RS resource set corresponding to the CSI reporting configuration.
  • RSRP measurement thereby obtaining the L1-RSRP measurement value of each CSI-RS resource in the CSI-RS resource set corresponding to the CSI reporting configuration, and then averaging the L1-RSRP measurement values of all CSI-RS resources, and taking the mean value as The measurement result of the CSI reporting configuration.
  • the L3-RSRP measurement of the Layer 3 reference signal received power on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • a measurement result corresponding to each CSI reporting configuration is determined based on the L3-RSRP measurement value of each CSI-RS resource.
  • the CSI-RS resource set corresponding to each CSI reporting configuration may include one or more CSI-RS resources.
  • L3-RSRP measurement may be performed on each CSI-RS resource set corresponding to each CSI reporting configuration, so as to obtain the The L3-RSRP measurement value of each CSI-RS resource in the CSI-RS resource set corresponding to the CSI reporting configuration.
  • the optimal L3-RSRP measurement value can be selected from each CSI-RS resource set as Corresponding to the L3-RSRP measurement value of the entire CSI-RS resource set, the optimal L3-RSRP measurement value can be added to the measurement result corresponding to the CSI reporting configuration, and the CSI-RSRP measurement value corresponding to the optimal L3-RSRP measurement value can also be added.
  • the resource index of the RS resource is also added to the measurement result corresponding to the CSI reporting configuration, which is not specifically limited in this embodiment of the present disclosure.
  • the layer 3 reference signal received power L3-RSRP measurement for performing spatial filtering on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • L3-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L3-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • the CSI-RS resource set corresponding to each CSI reporting configuration may include one or more CSI-RS resources.
  • L3-RS resources in the CSI-RS resource set corresponding to the CSI reporting configuration can be performed L3- RSRP measurement, thereby obtaining the L3-RSRP measurement value of each CSI-RS resource in the CSI-RS resource set corresponding to the CSI reporting configuration, and then averaging the L3-RSRP measurement values of all CSI-RS resources, and taking the mean value as The measurement result of the CSI reporting configuration.
  • step 110 includes:
  • the layer 1 reference signal received power L1-RSRP measurement is performed on the CSI-RS resource set corresponding to each cell.
  • L1-RSRP measurement can be performed on the CSI-RS resource set corresponding to the cell, so as to obtain the L1-RSRP measurement value corresponding to the cell.
  • the above operations can be performed for each cell, so that the L1-RSRP measurement value corresponding to each cell can be obtained.
  • RSRP measurement based on CSI-RS resources can be implemented at layer 1 without introducing additional filters for filtering operations, thus reducing the cell handover delay.
  • step 110 includes:
  • the measurement result corresponding to each cell is determined based on the L1-RSRP measurement value of each CSI-RS resource in each CSI-RS resource set, respectively.
  • the CSI-RS resource set corresponding to each cell may include one or more CSI-RS resources.
  • L1-RSRP measurement may be performed on each CSI-RS resource in the CSI-RS resource set corresponding to each cell, so as to obtain the CSI-RS resource set corresponding to each cell. L1-RSRP measurements for each CSI-RS resource.
  • the optimal L1-RSRP measurement value can be selected from each CSI-RS resource set as the corresponding CSI -
  • the L1-RSRP measurement value of the entire RS resource set the optimal L1-RSRP measurement value can be added to the measurement result of the corresponding cell, and the CSI-RS resource resource corresponding to the optimal L1-RSRP measurement value can also be added
  • the index is also added to the measurement result of the corresponding cell, which is not specifically limited in this embodiment of the present disclosure.
  • each CSI-RS resource set is configured with a cell ID of the corresponding cell.
  • the CSI-RS resource sets are in one-to-one correspondence with cells, and each CSI-RS resource set is configured with a cell ID for identifying the corresponding cell.
  • the terminal can determine the one-to-one correspondence between the CSI-RS resource set and the cell according to the cell ID configured in the CSI-RS resource set, and the terminal can also report the measurement result based on the CSI-RS resource set to the base station of the current cell.
  • the cell ID of the corresponding cell is added to the measurement result, so that the base station of the current cell can know the correspondence between the measurement result and the cell after receiving the measurement result, so as to determine whether to perform cell handover.
  • the measurement result of the at least one cell includes the cell ID of the at least one cell, the set index of the CSI-RS resource set corresponding to the at least one cell, and the CSI-RS resource set in the CSI-RS resource set corresponding to the at least one cell. At least one of an optimal measurement value and a resource index of RS resources, and a precoding indication PMI of a set of CSI-RS resources corresponding to at least one cell.
  • the terminal may first determine the cell to which the measurement result needs to be sent. Then, based on the set of CSI-RS resources corresponding to the cell that needs to send the measurement result, calculate the channel state information for the cell that needs to send the measurement result, so as to obtain the PMI (Precoding Matrix Indicator, precoding indicator) of the cell that needs to send the measurement result ).
  • the measurement result of the at least one cell may also include the PMI of the CSI-RS resource set corresponding to the at least one cell.
  • the base station of the current cell may configure N CSI-RS resource sets for the terminal, and each CSI-RS resource set corresponds to one cell.
  • Each CSI-RS resource set is configured with a cell ID, which is used to indicate which cell sends the corresponding CSI-RS resource set.
  • CSI-RS resources are sent periodically.
  • the terminal performs L1-RSRP measurement on each CSI-RS resource in the N CSI-RS resource sets.
  • M i L1-RSRP measurement values can be obtained, and the optimal measurement value among the M i L1-RSRP measurement values can be used as the L1-RSRP measurement value of the CSI-RS resource set i .
  • the terminal compares the L1-RSRP measurement value corresponding to the current cell with the L1-RSRP measurement value corresponding to the adjacent cell. If the L1-RSRP measurement value corresponding to the adjacent cell is better than the L1-RSRP measurement value corresponding to the source base station, the adjacent cell The corresponding L1-RSRP measurement value is reported to the base station of the current cell, and the CSI-RS resource index corresponding to the L1-RSRP measurement value is also reported at the same time. In addition, the index of the CSI-RS resource set corresponding to the L1-RSRP measurement value or the cell ID corresponding to the L1-RSRP measurement value may also be reported to the base station of the current cell.
  • the set of CSI-RS resources configured for each cell can be used not only for cell measurement, but also for PMI measurement feedback.
  • the PMI is fed back while the cell measurement results are fed back, which is different from the conventional one in determining
  • the embodiments of the present disclosure complete the PMI feedback before the cell handover is determined, which helps to simplify the cell handover process and shorten the cell handover delay.
  • step 120 includes:
  • the measurement result of at least one cell in all cells is sent to the base station of the current cell.
  • the terminal can send the measurement result of at least one cell to the base station of the current cell.
  • One is to send according to the measurement result reporting configuration pre-configured by the base station of the current cell.
  • the measurement result reporting configuration can instruct the terminal to periodically report the optimal L1-RSRP measurement corresponding to each CSI-RS resource set value and its corresponding CSI-RS resource index, can also instruct the terminal to periodically report the optimal L1-RSRP measurement value corresponding to the optimal CSI-RS resource set and its corresponding CSI-RS resource index, as well as the optimal CSI-RS resource
  • the set corresponds to the cell ID.
  • the terminal judges by itself whether the measurement result obtained by the cell measurement conforms to the predefined rule, and then judges whether to feed back the cell measurement result.
  • the configuration can be reported according to the measurement result pre-configured by the base station of the current cell, and at the same time combined with the pre-defined rules, the terminal can judge by itself whether to feed back the cell measurement result.
  • the predefined rule may be that there is a neighbor cell whose measurement result is better than the current cell, or there is a neighbor cell whose measurement result is better than a preset measurement threshold, or the measurement results of the current cell obtained by multiple consecutive measurements are not correct. Reaching a preset measurement threshold or the like, which is not specifically limited in this embodiment of the present disclosure.
  • the L1-RSRP measurement value with the largest value is the third CSI-RS resource corresponding to the The RSRP of , specifically expressed as In the remaining N-1 CSI-RS resource sets, the L1-RSRP measurement value with the largest value is the RSRP corresponding to the fifth CSI-RS resource in CSI-RS resource set 3, which is specifically expressed as like It means that the quality of the current cell is the best, no handover is required, and the terminal does not perform any reporting at this time; if It means that the quality of the neighboring cells is better, and handover is recommended. At this time, the terminal will trigger the cell handover report, and the The index of the corresponding CSI-RS resource set 3 and the index of the fifth CSI-RS resource in the CSI-RS resource set 3 are reported.
  • the preset number of times S can be predefined, and S is greater than 1.
  • the predefined rule includes that there are adjacent cells whose measurement results are better than the current cell, or that the measurement results of any adjacent cell are better than the measurement results of the current cell more than a preset number of times.
  • the predefined rule may be that there is a neighbor cell whose measurement result is better than that of the current cell. At this time, if the terminal switches from the current cell to the neighbor cell with better measurement result, the link quality may be optimized. It is recommended to perform handover. The measurement result of the neighboring cell with better measurement result may be sent to the base station of the current cell.
  • the predefined rule can also be that the number of times that the measurement result of any neighboring cell is better than the measurement result of the current cell is greater than the preset number of times, that is, there is a neighboring cell that is measured in multiple consecutive cell measurements. The results are better than the current cell.
  • the link quality may be optimized. It is recommended to perform handover.
  • the terminal can use the measurement results of the neighboring cell with better measurement results. Sent to the base station of the current cell.
  • sending the measurement result of at least one cell in all cells to the base station of the current cell includes: sending the optimal measurement result among the measurement results of all cells to the base station of the current cell.
  • the measurement result of only one cell may be sent, that is, the optimal measurement result among the measurement results of all cells.
  • the set index of the CSI-RS resource set with the optimal measurement result may be sent, or Send the cell ID configured in the CSI-RS resource set with the best measurement result, and can also send the optimal measurement value of each CSI-RS resource in the CSI-RS resource set with the best measurement result, and the corresponding optimal measurement value.
  • the resource index of the CSI-RS resource, and the PMI of the CSI-RS resource with the best measurement result may also be sent together, which is not specifically limited in this embodiment of the present disclosure.
  • step 120 based on a predefined rule, the measurement result of at least one cell in all cells is sent to the base station of the current cell, including:
  • the measurement result of at least one cell is sent to the base station of the current cell through random access resource or uplink resource request.
  • the terminal automatically triggers the feedback of the measurement result.
  • the feedback triggered by the terminal itself can be specifically fed back through random access resources, that is, feedback of measurement results in the PRACH (Physical Random Access Channel) process; it can also be fed back through uplink resource requests, that is, through uplink resources.
  • PRACH Physical Random Access Channel
  • the base station of the current cell allocates uplink resources to feed back the measurement result, which is not specifically limited in this embodiment of the present disclosure.
  • step 120 the method further includes:
  • the base station receiving the target cell feeds back the random access response message based on the random access preamble sequence.
  • the base station of the current cell will make a cell handover decision according to the received measurement result. If the decision result is to perform cell handover, the base station of the current cell will send The terminal issues a cell handover command, and the cell handover command instruction includes the target cell to be handed over.
  • the terminal After receiving the cell handover command, the terminal can send a random access preamble sequence preamble to the base station of the target cell to be handed over, and the base station of the target cell returns a random access response message (Random Access Response, RAR) after detecting the preamble,
  • RAR Random Access Response
  • the terminal can receive the random access response message RAR on PDCCH (Physical Downlink Control Channel, physical downlink control channel)/PDSCH (Physical Downlink Shared Channel, physical downlink shared channel).
  • the terminal After receiving the random access response message, the terminal also needs to send an RRC request on the PUSCH (Physical Uplink Shared Channel, uplink physical shared channel), and receive the response from the base station of the target cell on the PDSCH. contention resolution message, and upgrade TC-RNTI (Temporary Cell-Radio Network Temporary Identity) to C-RNTI (Cell-Radio Network Temporary Identity).
  • RRC request on the PUSCH (Physical Uplink Shared Channel, uplink physical shared channel)
  • contention resolution message and upgrade TC-RNTI (Temporary Cell-Radio Network Temporary Identity) to C-RNTI (Cell-Radio Network Temporary Identity).
  • TC-RNTI Temporary Cell-Radio Network Temporary Identity
  • C-RNTI Cell-Radio Network Temporary Identity
  • the base station of the target cell needs to configure new channel measurement information for the terminal and start new data transmission only after obtaining feedback from the terminal. This also results in a larger handover delay.
  • the base station of the current cell since the base station of the current cell has pre-configured the CSI-RS resource set corresponding to each cell for the terminal, which also includes the CSI-RS resource set corresponding to the target cell, the terminal has already configured the CSI-RS resource set corresponding to the target cell during cell handover.
  • the CSI-RS resource set corresponding to the target cell is configured, and the base station of the target cell does not need to reconfigure the channel measurement information, thus simplifying the cell handover process and further reducing the cell handover delay.
  • the receiving random access response message fed back by the base station of the target cell based on the random access preamble sequence further includes:
  • the random access response message includes timing advance information, access the target cell based on the timing advance information in the random access response message;
  • the timing advance information of the target cell is determined from the timing advance information of at least one cell preconfigured by the base station of the current cell, and the target cell is accessed based on the timing advance information of the target cell.
  • the random access response message includes Timing advance (TA) information, but does not include uplink channel resource allocation information, and the terminal may base on the timing advance information included in the random access response message. Access the target cell.
  • TA Timing advance
  • the random access response message is only used for random access confirmation, and contains neither timing advance information nor uplink channel resource allocation information.
  • the terminal can be pre-configured to the terminal from the base station of the current cell. From the timing advance information of the plurality of cells, the timing advance information of the target cell is selected, and then the target cell is accessed through the preconfigured timing advance information.
  • the terminal during the access process of the target cell, the terminal only needs to receive the random access response message to perform the target cell access, which simplifies the complex process of the target cell access and reduces the time of cell handover. extension.
  • the sending a random access preamble sequence to the base station of the target cell to be handed over includes:
  • step 110 cell measurement has been performed on the target cell based on the CSI-RS resource set corresponding to the target cell, and the L1-RSRP measurement of each CSI-RS resource in the CSI-RS resource set corresponding to the target cell is obtained. value, and determine the CSI-RS resource corresponding to the optimal L1-RSRP measurement value, that is, the optimal CSI-RS.
  • the beam corresponding to the optimal CSI-RS can be used as the beam for transmitting the random access preamble sequence, which is used to transmit the random access preamble sequence on the PRACH resource.
  • the beam corresponding to the optimal CSI-RS resource in the measurement result of the target cell is used as the preamble sequence transmission beam, which can effectively ensure the success rate of random access.
  • the method further includes:
  • the timing advance information or timing advance adjustment information sent by the base station of the current cell is received, and the timing advance information and the timing advance adjustment information are used for the terminal to access the target cell.
  • timing advance information or timing advance adjustment information sent by the base station of the current cell to the terminal may occur before the cell switch is determined, or after the cell switch is determined, and the specific timing advance information or timing advance adjustment information sent may be corresponding to each A cell may also correspond only to a target cell, which is not specifically limited in this embodiment of the present disclosure.
  • timing advance information or timing advance adjustment information corresponding to each cell sent by the base station of the current cell may be determined according to the deployment of the base station of each cell. For example, in a high-speed rail scenario, timing advance information of each cell during handover can be determined based on the positional relationship between the track and multiple base stations.
  • the terminal may not perform the random access procedure.
  • the base station of the current cell issues a cell handover command, it can also configure configuration information such as RRC parameters of the target cell to the terminal. After the terminal obtains the configuration information such as RRC parameters, it can realize data transmission with the target cell.
  • the base station of the current cell can configure the timing prerequisites of all cells including the current cell and each neighboring cell to the terminal in the form shown in the following table:
  • PCI0 PCI1 ... PCIN-2 PCIN-1 TA0 TA1 ... TAN-2 TAN-1
  • PCI Physical Cell Identifier, physical cell identifier
  • FIG. 3 is a schematic flowchart of a cell handover method provided by another embodiment of the present disclosure.
  • the execution body of the method is a base station, specifically a base station of a cell currently accessed by a terminal, and the method is executed by a base station.
  • Methods include:
  • Step 210 Receive a measurement result of at least one cell sent by the terminal; the measurement result of at least one cell is that the terminal performs cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells owned.
  • the multiple cells here include the cell currently accessed by the terminal, that is, the current cell, and also include neighboring cells of the current cell, and the number of neighboring cells may be one or more.
  • the CSI-RS resource set is a set of CSI-RS resources, and each CSI-RS resource set may include one or more CSI-RS resources.
  • a CSI-RS resource set corresponding to each cell may be configured in advance, and the CSI-RS resource set corresponding to each cell may be configured by the base station of the current cell to the terminal.
  • the correspondence between cells and CSI-RS resource sets may be one-to-one correspondence, or each cell may correspond to multiple CSI-RS resource sets, or each CSI-RS resource set may correspond to multiple cells , which is not specifically limited in this embodiment of the present disclosure.
  • the terminal may perform cell measurement on each cell to obtain the measurement result of each cell.
  • the measurement result of the cell specifically reflects the measurement result of the CSI-RS resource set corresponding to the cell.
  • CSI-RS is separately configured for each cell.
  • the resource set is used for cell measurement, which can be implemented only in layer 1.
  • L1-RSRP measurement of the received power of the layer 1 reference signal or L1-RSRP measurement of the received power of the layer 1 reference signal by spatial filtering.
  • the terminal can select the measurement results of a part of the cells from the measurement results of all the cells and send them to the base station of the current cell, or directly transmit the measurement results of all the cells.
  • the result is sent to the base station of the current cell.
  • the base station of the current cell can receive the measurement results of a part of the cells sent by the terminal, and can also receive the measurement results of all cells sent by the terminal.
  • the at least one cell referred to in the embodiments of the present disclosure may be one or more cells among all the cells, and further may be only the cell with the best measurement result among all the cells, or may be the cell with the best measurement result than the current cell. Neighboring cells may also be all cells whose measurement results are better than a preset threshold, or may be all cells, which are not specifically limited in this embodiment of the present disclosure.
  • the execution of the sending operation may be executed by the terminal according to the base station configuration of the current cell, or may be triggered and executed by the terminal itself, wherein the condition for the terminal to trigger the execution of the sending operation may be that there is a neighbor whose measurement result is better than that of the current cell.
  • a cell, or a neighboring cell whose measurement result is better than the current cell in multiple consecutive cell measurements, etc., is not specifically limited in this embodiment of the present disclosure.
  • Step 220 Perform a cell handover decision based on the measurement result of at least one cell.
  • the base station of the current cell may make a cell handover decision based on the measurement result of the at least one cell.
  • the measurement result of the at least one cell includes the neighbor cell and the current cell. If the measurement result of the adjacent cell is better than the measurement result of the current cell, the base station of the current cell issues a handover command to the terminal, and for example, the measurement result of at least one cell only includes the best measurement result.
  • the base station may determine whether to perform cell handover according to the number of times of receiving the measurement result of the same cell.
  • the base station can make a cell handover decision based on measurement results obtained by the terminal performing cell measurement through the set of CSI-RS resources corresponding to each cell.
  • the cell measurement based on the CSI-RS resource set can only be implemented in layer 1, without going through layer 3, and without introducing additional filters in layer 3 for filtering operations, so it can avoid the delay caused by additional filtering operations. , reducing the complexity of the cell handover process, thereby improving the data transmission quality of the terminal and ensuring the reliability of the data transmission link.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration.
  • the CSI-RS resource set corresponds to the cell one-to-one, and the CSI-RS resource set is configured for each cell one-to-one, so that the terminal can perform cell measurement through the CSI-RS resource set corresponding to each cell itself. It helps to realize the parallel cell measurement of multiple cells, thereby further shortening the cell measurement time and reducing the handover delay.
  • the CSI reporting configuration referred to here may include a reporting mechanism for CSI measurement results, such as periodic reporting, semi-persistent reporting, or aperiodic reporting, and may also include information that needs to be included in the reported measurement results.
  • the CSI reporting configuration may Instruct the terminal to periodically report the optimal L1-RSRP measurement value corresponding to each CSI-RS resource set and its corresponding CSI-RS resource index, or instruct the terminal to periodically report the optimal L1-RSRP corresponding to the optimal CSI-RS resource set The measured value and its corresponding CSI-RS resource index, as well as the cell ID corresponding to the optimal CSI-RS resource set, where the optimal CSI-RS resource set is the CSI with the best measurement result in the above multiple CSI-RS resource sets - Collection of RS resources.
  • Associating the above multiple CSI-RS resource sets to the same CSI reporting configuration means that the reporting of the measurement results of the above multiple CSI-RS resource sets needs to be performed according to the information indicated by the same CSI reporting configuration, for example, the CSI reporting configuration
  • the reporting mechanism indicated in is periodic reporting, then the measurement results of the above multiple CSI-RS resource sets need to be reported periodically, and for example, the reported measurement results indicated in the CSI reporting configuration need to include the optimal L1-RSRP measurement value , the measurement results reported by the above multiple CSI-RS resource sets all need to include the optimal L1-RSRP measurement value.
  • each CSI-RS resource set corresponds to one cell
  • each CSI-RS resource set in the multiple CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations Corresponds to a CSI reporting state.
  • the CSI-RS resource set corresponds to the cell one-to-one, and the CSI-RS resource set is configured for each cell one-to-one, so that the terminal can perform cell measurement through the CSI-RS resource set corresponding to each cell itself. It helps to realize the parallel cell measurement of multiple cells, thereby further shortening the cell measurement time and reducing the handover delay.
  • the above-mentioned multiple CSI-RS resource sets that is, all CSI-RS resource sets
  • one CSI reporting configuration is associated with each CSI-RS resource set, so that different CSI-RS resource sets can be Corresponding to the same or different CSI reporting configurations, the flexibility of CSI reporting is improved.
  • the CSI reporting state is an upper-layer concept of the CSI reporting configuration. Triggering the CSI reporting state can trigger the triggering of all CSI reporting configurations corresponding to the CSI reporting state, and establishes a relationship between one or more CSI reporting configurations and a CSI reporting state. Corresponding relationship, synchronous triggering of CSI reporting configuration can be implemented.
  • each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • a CSI-RS resource set includes at least one CSI-RS resource, a single CSI-RS resource in a single CSI-RS resource set corresponds to a cell, different CSI-RS resources correspond to different cells, and a CSI-RS resource corresponds to a cell
  • the corresponding relationship between them enables the terminal to implement cell measurement through the CSI-RS resources corresponding to each cell itself, which helps to achieve parallel cell measurement of multiple cells, thereby further shortening cell measurement time and reducing handover delay.
  • one CSI-RS resource set is associated with one CSI reporting configuration, so as to realize the unified configuration of CSI reporting of all CSI-RS resources in the CSI-RS resource set.
  • Associating a CSI-RS resource set with a CSI reporting configuration means that the reporting of the measurement results of each CSI-RS resource in a CSI-RS resource set needs to be performed according to the information indicated by the same CSI reporting configuration, for example If the reporting mechanism indicated in the CSI reporting configuration is periodic reporting, the measurement results of all CSI-RS resources in a CSI-RS resource set need to be periodically reported. Based on any of the above embodiments, before step 210, the method further includes:
  • the resource set configuration information is sent to the terminal, where the resource set configuration information includes configuration information of the number of CSI-RS resource sets of the cells, and the configuration information of each CSI-RS resource set includes the cell ID of the corresponding cell.
  • the resource configuration information is used to indicate the configuration information of the CSI-RS resource set corresponding to each cell.
  • the base station Before the cell handover, the base station generates the resource set configuration information and sends the resource set configuration information to the terminal. After the terminal receives the resource set configuration After the information is obtained, a corresponding CSI-RS resource set can be configured for each cell according to the resource set configuration information, and the configuration information of each CSI-RS resource set includes a cell ID used to identify the corresponding cell.
  • the terminal may determine the one-to-one correspondence between the CSI-RS resource set and the cell according to the cell ID in the configuration information of the CSI-RS resource set.
  • the terminal may add the cell ID of the corresponding cell to the measurement result, so that after receiving the measurement result, the base station of the current cell can
  • the cell ID included in the obtained measurement result is used to obtain the correspondence between the measurement result and the cell, so as to determine whether a cell handover is required.
  • the measurement result of the at least one cell includes the cell ID of the at least one cell, the set index of the CSI-RS resource set corresponding to the at least one cell, and the CSI-RS resource set in the CSI-RS resource set corresponding to the at least one cell. At least one of an optimal measurement value and a resource index of the RS resource, and a precoding indication PMI of at least one CSI-RS resource in the CSI-RS resource set corresponding to at least one cell.
  • the terminal may first determine the cell to which the measurement result needs to be sent. Then, based on the set of CSI-RS resources corresponding to the cell that needs to send the measurement result, calculate the channel state information for the cell that needs to send the measurement result, so as to obtain the PMI (Precoding Matrix Indicator, precoding indicator) of the cell that needs to send the measurement result ).
  • the measurement result of the at least one cell may also include the PMI of the CSI-RS resource set corresponding to the at least one cell.
  • the measurement result of the at least one cell thus received by the base station may also include the PMI of the CSI-RS resource set corresponding to the at least one cell.
  • the CSI-RS resource set configured for each cell can be used not only for cell measurement, but also for PMI measurement feedback.
  • the base station receives the PMI while receiving the feedback cell measurement result, which is different from the conventional one Compared with the solution in which the terminal is instructed to feed back the PMI after the cell handover is determined, the embodiment of the present disclosure completes the PMI reception before the cell handover is determined, which helps to simplify the cell handover process and shorten the cell handover delay.
  • the optimal measurement value is the optimal value of the L1-RSRP measurement value of the layer 1 reference signal received power corresponding to all CSI-RS resources in the CSI-RS resource set.
  • the cell measurement performed by the terminal is to perform L1-RSRP measurement on the CSI-RS resource set corresponding to each cell, so as to obtain the L1-RSRP measurement value corresponding to each cell.
  • the CSI-RS resource set corresponding to each cell may include one or more CSI-RS resources
  • the terminal when the terminal performs cell measurement on each cell, it can separately measure the CSI-RS resource set corresponding to each cell. Perform L1-RSRP measurement on each CSI-RS resource of , so as to obtain the L1-RSRP measurement value of each CSI-RS resource in the CSI-RS resource set corresponding to each cell.
  • the terminal After obtaining the L1-RSRP measurement value of each CSI-RS resource in the CSI-RS resource set corresponding to each cell, the terminal can select the optimal L1-RSRP measurement value from each CSI-RS resource set, as the corresponding L1-RSRP measurement value.
  • the optimal L1-RSRP measurement value can be added to the measurement result of the corresponding cell, and the CSI-RS resource corresponding to the optimal L1-RSRP measurement value can also be added.
  • the resource index is also added to the measurement result of the corresponding cell, which is not specifically limited in this embodiment of the present disclosure.
  • the measurement result of at least one cell is configured by the terminal to report the measurement result based on the measurement result of the base station of the current cell, and/or is sent based on a predefined rule.
  • the terminal can send the measurement result of at least one cell to the base station of the current cell.
  • One is to send according to the measurement result reporting configuration pre-configured by the base station of the current cell.
  • the measurement result reporting configuration can instruct the terminal to periodically report the optimal L1-RSRP measurement corresponding to each CSI-RS resource set value and its corresponding CSI-RS resource index, can also instruct the terminal to periodically report the optimal L1-RSRP measurement value corresponding to the optimal CSI-RS resource set and its corresponding CSI-RS resource index, as well as the optimal CSI-RS resource
  • the set corresponds to the cell ID.
  • the terminal judges by itself whether the measurement result obtained by the cell measurement conforms to the predefined rule, and then judges whether to feed back the cell measurement result.
  • the configuration can be reported according to the measurement result pre-configured by the base station of the current cell, and at the same time combined with the pre-defined rules, the terminal can judge by itself whether to feed back the cell measurement result.
  • the predefined rule may be that there is a neighbor cell whose measurement result is better than the current cell, or there is a neighbor cell whose measurement result is better than a preset measurement threshold, or the measurement results of the current cell obtained by multiple consecutive measurements are not correct. Reaching a preset measurement threshold or the like, which is not specifically limited in this embodiment of the present disclosure.
  • the predefined rule includes that there are adjacent cells whose measurement results are better than the current cell, or that the measurement results of any adjacent cell are better than the measurement results of the current cell more than a preset number of times.
  • the predefined rule may be that there is a neighbor cell whose measurement result is better than that of the current cell. At this time, if the terminal switches from the current cell to the neighbor cell with better measurement result, the link quality may be optimized. It is recommended to perform handover. The measurement result of the neighboring cell with better measurement result may be sent to the base station of the current cell.
  • the predefined rule can also be that the number of times that the measurement result of any neighboring cell is better than the measurement result of the current cell is greater than the preset number of times, that is, there is a neighboring cell that is measured in multiple consecutive cell measurements. The results are better than the current cell.
  • the link quality may be optimized. It is recommended to perform handover.
  • the terminal can use the measurement results of the neighboring cell with better measurement results. Sent to the base station of the current cell.
  • the measurement result of at least one cell is the optimal measurement result among the measurement results of the multiple cells.
  • the measurement result received by the base station may only be the measurement result of one cell, that is, the optimal measurement result among the measurement results of all cells, and the specific base station may receive the CSI-RS resource set with the optimal measurement result sent by the terminal
  • the set index can also be the cell ID configured in the CSI-RS resource set with the optimal measurement result sent by the terminal, and it can also include the CSI-RS resource set of the CSI-RS resource set with the optimal measurement result sent by the terminal.
  • the optimal measurement value and the resource index of the CSI-RS resource corresponding to the optimal measurement value may also receive the PMI of the CSI-RS resource with the optimal measurement result sent by the terminal, which is not specifically limited in this embodiment of the present disclosure.
  • the measurement result of at least one cell is sent by the terminal through a random access resource or uplink resource request when a predefined rule is satisfied.
  • the terminal automatically triggers the feedback of the measurement result.
  • the feedback triggered by the terminal itself can be fed back through random access resources, that is, the feedback of measurement results in the PRACH process; it can also be fed back through uplink resource requests, that is, the base station of the current cell allocates uplink resources by means of uplink resource requests. Feedback of the measurement result is not specifically limited in this embodiment of the present disclosure.
  • the method further includes:
  • the timing advance information or timing advance adjustment information of at least one cell is sent to the terminal, and the timing advance information and the timing advance adjustment information are used for the terminal to access the target cell.
  • the timing advance information or timing advance adjustment information sent by the base station to the terminal may occur before the cell handover is determined, or after the cell switchover is determined, and the specific timing advance information or timing advance adjustment information sent may be corresponding to each cell. , or it may only correspond to the target cell, which is not specifically limited in this embodiment of the present disclosure.
  • timing advance information or timing advance adjustment information corresponding to each cell sent by the base station of the current cell may be determined according to the deployment of the base station of each cell. For example, in a high-speed rail scenario, timing advance information of each cell during handover can be determined based on the positional relationship between the track and multiple base stations.
  • the terminal may not perform the random access procedure.
  • the base station of the current cell issues a cell handover command, it can also configure configuration information such as RRC parameters of the target cell to the terminal. After the terminal obtains the configuration information such as RRC parameters, it can realize data transmission with the target cell.
  • a method for cell handover includes the following steps:
  • the base station of the current cell may configure N CSI-RS resource sets for the terminal, and each CSI-RS resource set corresponds to one cell.
  • Each CSI-RS resource set is configured with a cell ID, which is used to indicate which cell sends the corresponding CSI-RS resource set.
  • CSI-RS resources are sent periodically.
  • the terminal performs L1-RSRP measurement on each CSI-RS resource in the N CSI-RS resource sets.
  • M i L1-RSRP measurement values can be obtained, and the optimal measurement value among the M i L1-RSRP measurement values can be used as the L1-RSRP measurement value of the CSI-RS resource set i .
  • the terminal compares the L1-RSRP measurement value corresponding to the current cell with the L1-RSRP measurement value corresponding to the adjacent cell. If the L1-RSRP measurement value corresponding to the adjacent cell is better than the L1-RSRP measurement value corresponding to the source base station, the adjacent cell The corresponding L1-RSRP measurement value is reported to the base station of the current cell, and the CSI-RS resource index corresponding to the L1-RSRP measurement value is also reported at the same time. In addition, the index of the CSI-RS resource set corresponding to the L1-RSRP measurement value or the cell ID corresponding to the L1-RSRP measurement value may also be reported to the base station of the current cell.
  • the L1-RSRP measurement value with the largest value is the third CSI-RS resource corresponding to the The RSRP of , specifically expressed as In the remaining N-1 CSI-RS resource sets, the L1-RSRP measurement value with the largest value is the RSRP corresponding to the fifth CSI-RS resource in CSI-RS resource set 3, which is specifically expressed as like It means that the quality of the current cell is the best, no handover is required, and the terminal does not perform any reporting at this time; if It means that the quality of the neighboring cells is better, and handover is recommended.
  • the terminal will trigger the cell handover report, and the The index of the corresponding CSI-RS resource set 3 and the index of the fifth CSI-RS resource in the CSI-RS resource set 3 are reported.
  • the terminal can also escalate.
  • the terminal may report the cell ID corresponding to the CSI-RS resource set 3 and the index of the fifth CSI-RS resource in the CSI-RS resource set 3 .
  • the preset number of times S can be predefined, and S is greater than 1.
  • a method for cell handover includes the following steps:
  • the base station of the current cell may configure N CSI-RS resource sets for the terminal, and each CSI-RS resource set corresponds to one cell.
  • Each CSI-RS resource set is configured with a cell ID, which is used to indicate which cell sends the corresponding CSI-RS resource set.
  • CSI-RS resources are sent periodically.
  • the N CSI-RS resource sets are associated with one CSI reporting configuration; or each resource set in the N CSI-RS resource sets is respectively associated with one CSI reporting configuration, and the N CSI reporting configurations are associated to 1 CSI reporting status.
  • the terminal may be configured to periodically report the optimal L1-RSRP corresponding to each resource set and the corresponding CSI-RS resource index. Therefore, the terminal reports N L1-RSRP measurement values and N CSI-RS resource indices each time.
  • the source base station can compare the RSRP of the neighboring cell with the RSRP of the current cell to determine whether to perform cell handover.
  • the base station of the current cell may also configure the terminal to periodically report the optimal L1-RSRP measurement value corresponding to the optimal CSI-RS resource set and the corresponding CSI-RS resource index. Therefore, the terminal reports one L1-RSRP measurement value and one CSI-RS resource index each time. For example, the terminal may order the L1-RSRPs measured by all the CSI-RS resources in the N CSI-RS resource sets. It is assumed that the L1-RSRP with the largest value is the third CSI-RS resource in the CSI-RS resource set 6. In this way, the terminal represents the L1-RSRP corresponding to this resource as Perform reporting, and report the index of CSI-RS resource set 6 at the same time.
  • the base station of the current cell determines whether to perform cell handover according to the repetition times of the optimal resource set index reported periodically.
  • a method for cell handover includes the following steps:
  • the terminal selects the beam corresponding to the CSI-RS with the best measurement result from each CSI-RS resource in the CSI-RS resource set corresponding to the target cell as the preamble sequence transmission beam, and sends the beam based on the preamble sequence to the base station of the target cell.
  • a random access preamble sequence is sent.
  • the base station of the target cell After detecting the random access preamble sequence, the base station of the target cell sends random access response information to the terminal.
  • the random access response information here may include timing advance information, but does not include uplink channel resource allocation information.
  • the terminal may access the target cell based on the timing advance information included in the random access response message.
  • the random access response information may only be used for confirmation of random access, and neither timing advance information nor uplink channel resource allocation information is included.
  • the terminal may select the timing advance information of the target cell from the timing advance information of multiple cells preconfigured to the terminal by the base station of the current cell, and then access the target cell through the preconfigured timing advance information.
  • the target cell After determining the access of the terminal, the target cell can perform data transmission with the terminal.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • General packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • LTE-A Long term evolution advanced
  • the terminal involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present disclosure.
  • the base station involved in the embodiments of the present disclosure may include multiple cells that provide services for the terminal.
  • the base station may also be called an access point, or may be a device in the access network that communicates with wireless terminal equipment through one or more sectors on the air interface, or other names.
  • the network device can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet. Protocol (IP) communication network.
  • IP Internet Protocol
  • the network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long term evolution (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiments of the present disclosure.
  • a network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.
  • FIG. 4 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in FIG. 4 , the terminal includes a memory 420, a transceiver 410, a processor 400, and a user interface 430, wherein:
  • the memory 420 is used to store computer programs; the transceiver 410 is used to send and receive data under the control of the processor 400; the processor 400 is used to read the computer program in the memory 420 and perform the following operations:
  • the measurement result of at least one cell in the plurality of cells is sent to the base station of the current cell, so that the base station of the current cell makes a cell handover decision based on the received measurement result of the at least one cell.
  • the transceiver 410 is used to receive and transmit data under the control of the processor 400 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors 400 represented by processor 400 and various circuits of memory represented by memory 420 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 410 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the user interface may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.
  • the processor 400 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit, an application-specific integrated circuit), an FPGA (Field-Programmable Gate Array, a field programmable gate array) or a CPLD (Complex Programmable Logic Device, Complex Programmable Logic Device), the processor can also use a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device, Complex Programmable Logic Device
  • the processor can also use a multi-core architecture.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration; or,
  • Each CSI-RS resource set corresponds to one cell, each CSI-RS resource set in the multiple CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations correspond to one CSI reporting state; or ,
  • Each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • the performing cell measurement on multiple cells based on multiple channel state information reference signal CSI-RS resource sets includes:
  • the instructions in the CSI reporting configuration perform Layer 1 reference signal received power L1-RSRP measurement, layer 1 reference signal received power L1-RSRP measurement for spatial filtering, and Layer 3 reference signal received power L1-RSRP measurement for the CSI-RS resource set corresponding to each CSI reporting configuration One or more of signal received power L3-RSRP measurement, and spatially filtered layer 3 reference signal received power L3-RSRP measurement.
  • performing Layer 1 reference signal received power L1-RSRP measurement on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • a measurement result corresponding to each CSI reporting configuration is determined.
  • the layer 1 reference signal received power L1-RSRP measurement that performs spatial filtering on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • L1-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L1-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • performing Layer 3 reference signal received power L3-RSRP measurement on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • a measurement result corresponding to each CSI reporting configuration is determined based on the L3-RSRP measurement value of each CSI-RS resource.
  • the layer 3 reference signal received power L3-RSRP measurement that performs spatial filtering on the CSI-RS resource set corresponding to each CSI reporting configuration includes:
  • L3-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L3-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • each CSI-RS resource set is configured with a cell ID of a corresponding cell.
  • the measurement result of the at least one cell includes a cell ID of the at least one cell and a set index of the CSI-RS resource set corresponding to the at least one cell , the optimal measurement value and resource index of the CSI-RS resources in the CSI-RS resource set corresponding to the at least one cell, and the precoding indication of the CSI-RS resource set corresponding to the at least one cell At least one of PMI.
  • the sending the measurement result of at least one cell in the multiple cells to the base station of the current cell includes:
  • the measurement result of at least one cell in the multiple cells is sent to the base station of the current cell.
  • the predefined rule includes that there are adjacent cells whose measurement results are better than the current cell, or the number of times that the measurement results of any adjacent cell are better than the measurement results of the current cell is greater than the predetermined number. set times.
  • the sending the measurement result of at least one cell in the multiple cells to the base station of the current cell includes:
  • the optimal measurement result among the measurement results of the multiple cells is sent to the base station of the current cell.
  • the sending, based on a predefined rule, the measurement result of at least one cell in the multiple cells to the base station of the current cell includes:
  • the measurement result of the at least one cell is sent to the base station of the current cell through random access resource or uplink resource request.
  • the sending the measurement result of at least one cell in the multiple cells to the base station of the current cell further includes:
  • the random access response message fed back by the base station of the target cell based on the random access preamble sequence further includes:
  • the random access response message includes timing advance information, access the target cell based on the timing advance information in the random access response message;
  • the timing advance information of the target cell is determined from the timing advance information of at least one cell preconfigured by the base station of the current cell, and the target cell is accessed based on the timing advance information of the target cell.
  • the sending a random access preamble sequence to the base station of the target cell to be handed over includes:
  • the base station of the target cell sends the random access preamble sequence.
  • the terminal provided according to an embodiment of the present disclosure further includes:
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • the base station includes a memory 520, a transceiver 510, and a processor 500, wherein:
  • the memory 520 is used to store computer programs; the transceiver 510 is used to send and receive data under the control of the processor 500; the processor 500 is used to read the computer programs in the memory 520 and perform the following operations:
  • the measurement result of the at least one cell is that the terminal performs a cell-to-cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells. measured;
  • a cell handover decision is made based on the measurement result of the at least one cell.
  • the transceiver 510 is used to receive and transmit data under the control of the processor 500 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors 500 represented by processor 500 and various circuits of memory represented by memory 520 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 510 may be multiple elements, ie, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the user interface may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.
  • the processor 500 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit, an application-specific integrated circuit), an FPGA (Field-Programmable Gate Array, a field programmable gate array) or a CPLD (Complex Programmable Logic Device, Complex Programmable Logic Device), the processor can also use a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device, Complex Programmable Logic Device
  • the processor can also use a multi-core architecture.
  • the above-mentioned base station provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect, which is not the same as the method embodiment in this embodiment.
  • the parts and beneficial effects will be described in detail.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration; or,
  • Each CSI-RS resource set corresponds to one cell, each CSI-RS resource set in the multiple CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations correspond to one CSI reporting state; or ,
  • Each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • the receiving of the measurement result of at least one cell sent by the terminal further includes:
  • the resource set configuration information includes configuration information of a number of CSI-RS resource sets of cells, and the configuration information of each CSI-RS resource set includes a cell ID of a corresponding cell.
  • the measurement result of the at least one cell includes a cell ID of the at least one cell and a set index of the CSI-RS resource set corresponding to the at least one cell , the optimal measurement value and resource index of the CSI-RS resources in the CSI-RS resource set corresponding to the at least one cell, and at least one CSI in the CSI-RS resource set corresponding to the at least one cell - Precoding of RS resources indicates at least one of PMIs.
  • the optimal measurement value is the optimal measurement value of the Layer 1 reference signal received power L1-RSRP corresponding to all CSI-RS resources in the CSI-RS resource set. value.
  • the measurement result of the at least one cell is sent by the terminal based on the measurement result reporting configuration of the base station of the current cell and/or based on a predefined rule.
  • the predefined rules include that there are adjacent cells whose measurement results are better than the current cell, or the number of times that the measurement results of any adjacent cell are better than the measurement results of the current cell is greater than a predetermined number. set times.
  • the measurement result of the at least one cell is an optimal measurement result among the measurement results of the multiple cells.
  • the measurement result of the at least one cell is sent by the terminal through a random access resource or uplink resource request when the predefined rule is satisfied.
  • the base station provided according to an embodiment of the present disclosure further includes:
  • Timing advance information or timing advance adjustment information of at least one cell Sending timing advance information or timing advance adjustment information of at least one cell to the terminal, where the timing advance information and the timing advance adjustment information are used for the terminal to access the target cell.
  • FIG. 6 is a schematic structural diagram of a cell handover apparatus provided by an embodiment of the present disclosure. As shown in FIG. 6 , the apparatus includes a cell measurement unit 610 and a result sending unit 620;
  • the cell measurement unit 610 is configured to perform cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells;
  • the result sending unit 620 is configured to send the measurement result of at least one cell in the multiple cells to the base station of the current cell, so that the base station of the current cell can perform cell handover based on the received measurement result of the at least one cell judgment.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration; or,
  • Each CSI-RS resource set corresponds to one cell, each CSI-RS resource set in the multiple CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations correspond to one CSI reporting state; or ,
  • Each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the cell measurement unit 610 is configured to:
  • the instructions in the CSI reporting configuration perform Layer 1 reference signal received power L1-RSRP measurement, layer 1 reference signal received power L1-RSRP measurement for spatial filtering, and Layer 3 reference signal received power L1-RSRP measurement for the CSI-RS resource set corresponding to each CSI reporting configuration One or more of signal received power L3-RSRP measurement, and spatially filtered layer 3 reference signal received power L3-RSRP measurement.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the cell measurement unit 610 is configured to:
  • a measurement result corresponding to each CSI reporting configuration is determined.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the cell measurement unit 610 is configured to:
  • L1-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L1-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the cell measurement unit 610 is configured to:
  • a measurement result corresponding to each CSI reporting configuration is determined based on the L3-RSRP measurement value of each CSI-RS resource.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the cell measurement unit 610 is configured to:
  • L3-RSRP measurement is performed on each CSI-RS resource in the CSI-RS resource set corresponding to each CSI reporting configuration, and all L3-RSRP measurement results are averaged to obtain a measurement result corresponding to the CSI reporting configuration.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • each CSI-RS resource set is configured with a cell ID of the corresponding cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the measurement result of the at least one cell includes a cell ID of the at least one cell, a set index of the CSI-RS resource set corresponding to the at least one cell, and a set index of the CSI-RS resource set corresponding to the at least one cell. at least one of an optimal measurement value and a resource index of the CSI-RS resource in the corresponding CSI-RS resource set, and a precoding indication PMI of the CSI-RS resource set corresponding to the at least one cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the result sending unit 620 is configured to:
  • the measurement result of at least one cell in the multiple cells is sent to the base station of the current cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the predefined rule includes that there are neighbor cells whose measurement results are better than the current cell, or the number of times that the measurement results of any neighbor cell are better than the measurement results of the current cell is greater than a preset number of times.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the result sending unit 620 is configured to:
  • the optimal measurement result among the measurement results of the multiple cells is sent to the base station of the current cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the result sending unit 620 is configured to:
  • the measurement result of the at least one cell is sent to the base station of the current cell through random access resource or uplink resource request.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the apparatus further includes a random access unit, where the random access unit is configured to:
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the apparatus further includes a target cell access unit, where the target cell access unit is configured to:
  • the random access response message includes timing advance information, access the target cell based on the timing advance information in the random access response message;
  • the timing advance information of the target cell is determined from the timing advance information of at least one cell preconfigured by the base station of the current cell, and the target cell is accessed based on the timing advance information of the target cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the random access unit is used for:
  • the base station of the target cell sends the random access preamble sequence.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the device further includes a timing advance configuration unit, and the timing advance configuration unit is configured to:
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • FIG. 7 is a schematic structural diagram of a cell handover apparatus provided by another embodiment of the present disclosure. As shown in FIG. 7 , the apparatus includes a result receiving unit 710 and a handover decision unit 720;
  • the result receiving unit 710 is configured to receive the measurement result of at least one cell sent by the terminal; the measurement result of the at least one cell is that the terminal measures all the data based on the multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells. obtained by performing cell measurement on the multiple cells;
  • the handover decision unit 720 is configured to make a cell handover decision based on the measurement result of the at least one cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • each CSI-RS resource set corresponds to one cell, and the multiple CSI-RS resource sets are associated with one CSI reporting configuration; or,
  • Each CSI-RS resource set corresponds to one cell, each CSI-RS resource set in all CSI-RS resource sets is associated with one CSI reporting configuration, and one or more CSI reporting configurations correspond to one CSI reporting state; or,
  • Each CSI-RS resource in each CSI-RS resource set corresponds to one cell, and each CSI-RS resource set is associated with one CSI reporting configuration.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the apparatus further includes a collective configuration sending unit, and the collective configuration sending unit is configured to:
  • the resource set configuration information includes configuration information of a number of CSI-RS resource sets of cells, and the configuration information of each CSI-RS resource set includes a cell ID of a corresponding cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the measurement result of the at least one cell includes a cell ID of the at least one cell, a set index of the CSI-RS resource set corresponding to the at least one cell, and a set index of the CSI-RS resource set corresponding to the at least one cell.
  • the corresponding optimal measurement value and resource index of the CSI-RS resource in the CSI-RS resource set, and the precoding indication of at least one CSI-RS resource in the CSI-RS resource set corresponding to the at least one cell At least one of PMI.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the optimal measurement value is an optimal value of the L1-RSRP measurement value of the layer 1 reference signal received power corresponding to all CSI-RS resources in the CSI-RS resource set.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the measurement result of the at least one cell is configured by the terminal to report the measurement result based on the measurement result of the base station of the current cell, and/or is sent based on a predefined rule.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the predefined rule includes that there are neighbor cells whose measurement results are better than the current cell, or the number of times that the measurement results of any neighbor cell are better than the measurement results of the current cell is greater than a preset number of times.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the measurement result of the at least one cell is the optimal measurement result among the measurement results of all cells.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • the measurement result of the at least one cell is sent by the terminal through a random access resource or uplink resource request when the predefined rule is satisfied.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and there is no need to describe the differences between the present embodiment and the method embodiments. The same parts and beneficial effects will be described in detail.
  • the device further includes a timing configuration sending unit, and the timing configuration sending unit is configured to:
  • Timing advance information or timing advance adjustment information of at least one cell Sending timing advance information or timing advance adjustment information of at least one cell to the terminal, where the timing advance information and the timing advance adjustment information are used for the terminal to access the target cell.
  • the device for cell handover provided by the embodiments of the present disclosure can implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the details of this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the part that contributes to the prior art, or all or part of the technical solutions, and the computer software product is stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • an embodiment of the present disclosure further provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute the processing provided by the foregoing embodiments.
  • Cell handover method including:
  • the measurement result of at least one cell in the plurality of cells is sent to the base station of the current cell, so that the base station of the current cell makes a cell handover decision based on the received measurement result of the at least one cell.
  • An embodiment of the present disclosure further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is configured to cause the processor to execute the cell handover method provided by the foregoing embodiments, include:
  • the measurement result of the at least one cell is that the terminal performs a cell-to-cell measurement on the multiple cells based on multiple channel state information reference signal CSI-RS resource sets corresponding to the multiple cells. measured;
  • a cell handover decision is made based on the measurement result of the at least one cell.
  • the computer program stored thereon enables the processor to implement all the method steps implemented by the above method embodiments, and can achieve the same technical effect, and the description in this embodiment is not repeated here.
  • the same parts and beneficial effects as those in the method embodiment will be described in detail.
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

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Abstract

本公开实施例提供一种小区切换方法、终端、基站、装置和存储介质，其中方法包括：基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所有小区进行小区测量；将所有小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。本公开实施例提供的方法、终端、基站、装置和存储介质，基于CSI-RS资源集合进行小区测量，仅在层1即可实现，无需经过层3，更无需在层3引入额外的滤波器进行滤波操作，因此能够避免由于额外的滤波操作所引入的时延，降低小区切换过程的复杂程度，从而提高终端的数据传输质量，保证数据传输链路的可靠性。

Description

小区切换方法、终端、基站、装置和存储介质
相关申请的交叉引用
本申请要求于2020年10月22日提交的申请号为202011140777X，发明名称为“小区切换方法、终端、基站、装置和存储介质”的中国专利申请的优先权，以及于2021年01月18日提交的申请号为2021100616723，发明名称为“小区切换方法、终端、基站、装置和存储介质”的中国专利申请的优先权，其通过引用方式全部并入本文。
技术领域
本公开涉及无线通信技术领域，尤其涉及一种小区切换方法、终端、基站、装置和存储介质。
背景技术
在移动通信系统中，当处于通信状态的终端从一个小区移动到另一个小区，或者服务小区的链路质量恶化时，为了保证通信的连续性，网络需要将终端切换到另外一个小区，由另外一个小区为该终端继续提供服务，即执行小区切换。
目前NR(New RAT，新空口)系统的小区切换存在较大的时延，对于高速移动的终端，小区切换延时会降低数据传输质量，导致链路的可靠性无法得到保障。
发明内容
本公开实施例提供一种小区切换方法、终端、基站、装置和存储介质，用以解决现有的小区切换时延较大的问题。
第一方面，本公开实施例提供一种小区切换方法，包括：
基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站， 以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
可选地，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
可选地，所述基于多个信道状态信息参考信号CSI-RS资源集合，对多个小区进行小区测量，包括：
根据CSI上报配置中的指示，对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的一种或多种。
可选地，所述对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，得到每个CSI-RS资源的L1-RSRP测量值；
基于所述每个CSI-RS资源的L1-RSRP测量值，确定对应每个CSI上报配置的测量结果。
可选地，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层1参考信号接收功率L1-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，将全部L1-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
可选地，所述对每个CSI上报配置对应的CSI-RS资源集合进行层3参考信号接收功率L3-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，得到每个CSI-RS资源的L3-RSRP测量值；
基于所述每个CSI-RS资源的L3-RSRP测量值，确定对应每个CSI上报配置的测量结果。
可选地，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层3参考信号接收功率L3-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，将全部L3-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
可选地，每个CSI-RS资源集合均配置有对应小区的小区ID。
可选地，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合的预编码指示PMI中的至少一种。
可选地，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
基于所述当前小区的基站的测量结果上报配置，和/或，基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站。
可选地，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
可选地，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
将所述多个小区的测量结果中的最优测量结果发送至当前小区的基站。
可选地，所述基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
当满足所述预定义规则时，通过随机接入资源或上行资源请求将所述至少一个小区的测量结果发送至当前小区的基站。
可选地，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，之后还包括：
向待切换的目标小区的基站发送随机接入前导码序列；
接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息。
可选地，所述接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息，之后还包括：
若所述随机接入响应消息中包括定时提前信息，则基于所述随机接入响应消息中的定时提前信息接入所述目标小区；
否则，从当前小区的基站预先配置的至少一个小区的定时提前信息中确定所述目标小区的定时提前信息，并基于所述目标小区的定时提前信息接入所述目标小区。
可选地，所述向待切换的目标小区的基站发送随机接入前导码序列，包括：
从所述目标小区对应的CSI-RS资源集合中的每个CSI-RS资源中选取测量结果最优的CSI-RS资源对应的波束作为前导码序列发送波束，基于所述前导码序列发送波束向所述目标小区的基站发送所述随机接入前导码序列。
可选地，还包括：
接收当前小区的基站发送的定时提前信息或者定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于终端接入目标小区。
第二方面，本公开实施例提供一种小区切换方法，包括：
接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
基于所述至少一个小区的测量结果进行小区切换判决。
可选地，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每 个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
可选地，所述接收终端发送的至少一个小区的测量结果，之前还包括：
向所述终端发送资源集合配置信息，所述资源集合配置信息包括小区数量个CSI-RS资源集合的配置信息，每个CSI-RS资源集合的配置信息包括对应小区的小区ID。
可选地，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合中至少一个CSI-RS资源的预编码指示PMI中的至少一种。
可选地，所述最优测量值为对应所述CSI-RS资源集合中所有CSI-RS资源的层1参考信号接收功率L1-RSRP测量值的最优值。
可选地，所述至少一个小区的测量结果是所述终端基于当前小区的基站的测量结果上报配置，和/或，基于预定义规则发送的。
可选地，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
可选地，所述至少一个小区的测量结果为所述多个小区的测量结果中的最优测量结果。
可选地，所述至少一个小区的测量结果是当满足所述预定义规则时，所述终端通过随机接入资源或上行资源请求发送的。
可选地，还包括：
向所述终端发送至少一个小区的定时提前信息或定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于所述终端接入目标小区。
第三方面，本公开实施例提供一种终端，包括存储器、处理器及存储在存储器上并可在处理器上运行的程序，所述处理器执行所述程序时实现如下 步骤：
基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
第四方面，本公开实施例提供一种基站，包括存储器、处理器及存储在存储器上并可在处理器上运行的程序，所述处理器执行所述程序时实现如下步骤：
接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
基于所述至少一个小区的测量结果进行小区切换判决。
第五方面，本公开实施例提供一种小区切换装置，包括：
小区测量单元，用于基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
结果发送单元，用于将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
第六方面，本公开实施例提供一种小区切换装置，包括：
结果接收单元，用于接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
切换判决单元，用于基于所述至少一个小区的测量结果进行小区切换判决。
第七方面，本公开实施例提供一种非暂态计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现如第一方面或第二方面所提供的方法的步骤。
本公开实施例提供的一种小区切换方法、终端、基站、装置和存储介质，终端可以基于各个小区对应的CSI-RS资源集合进行小区测量，进而将测量结果发送至当前小区的基站用于小区切换判决。基于CSI-RS资源集合进行小区测量，仅在层1即可实现，不需要引入额外的滤波器，因此能够避免由于额外的滤波操作所引入的时延，降低小区切换过程的复杂程度，从而提高终端的数据传输质量，保证数据传输链路的可靠性。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例提供的小区切换方法的流程示意图；
图2为本公开实施例提供的小区切换方法的流程示意图；
图3为本公开另一实施例提供的小区切换方法的流程示意图；
图4为本公开实施例提供的终端的结构示意图；
图5为本公开实施例提供的基站的结构示意图；
图6为本公开实施例提供的小区切换装置的结构示意图；
图7为本公开另一实施例提供的小区切换装置的结构示意图。
具体实施方式
本公开实施例中术语“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本公开实施例中术语“多个”是指两个或两个以上，其它量词与之类似。
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获 得的所有其他实施例，都属于本公开保护的范围。
图1为本公开实施例提供的小区切换方法的流程示意图，如图1所示，目前在NR系统中，小区切换过程包括如下步骤：
步骤1，源基站(gNB)对终端进行测量配置，终端的测量结果将用于辅助源基站进行切换判决；
步骤2，终端根据测量配置将测量结果上报给源基站；
步骤3，源基站向终端发送切换命令，此处的切换命令中携带RRC(Radio Resource Control，无线资源控制)重配信息；
步骤4，终端接收切换命令，并执行与目标基站的同步，具体可以采用基于竞争或者非竞争的随机接入流程接入目标小区；
步骤5，由目标基站向终端发送数据。
在此过程中，步骤1中源基站对终端进行测量配置主要包括配置终端对本小区和邻小区的SSB(Synchronization Signal and PBCH block，同步信号和PBCH块)进行测量。步骤2中，终端上报给源基站的测量结果为层3 RSRP(Reference Signal Receiving Power，参考信号接收功率)，具体通过在层3引入一个额外的滤波器来实现。
源基站在接收到测量结果后，通过比较层3的L3-RSRP进行切换判决。但是L3-RSRP的上报之前需要额外的滤波器对多个测量结果进行滤波，导致小区切换存在较大时延。尤其是针对高速移动的终端，上述切换时延会降低数据传输质量，导致链路的可靠性无法保证。
对此，本公开实施例提供了一种小区切换方法。图2为本公开实施例提供的小区切换方法的流程示意图，如图2所示，该方法的执行主体为终端，该方法包括：
步骤110，基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量。
此处的多个小区包括终端当前接入的小区，即当前小区，也包括当前小区的邻小区，邻小区的数量可以是一个或者多个。
CSI-RS资源集合即CSI-RS资源的集合，每个CSI-RS资源集合可以包括 一个或者多个CSI-RS资源。
在步骤110执行之前，可以预先为每个小区对应配置CSI-RS资源集合，每个小区对应的CSI-RS资源集合可以是当前小区的基站配置给终端的。此处小区与CSI-RS资源集合之间的对应关系，可以是一一对应，也可以是每个小区对应多个CSI-RS资源集合，还可以是每个CSI-RS资源集合对应多个小区，本公开实施例对此不作具体限定。
基于每个小区分别对应的CSI-RS资源集合，终端可以对每个小区进行小区测量，从而得到每个小区的测量结果。此处小区的测量结果具体反映的是小区对应的CSI-RS资源集合的测量结果，相较于基于SSB测量L3-RSRP的小区测量方法，本公开实施例中为每个小区分别配置CSI-RS资源集合用于小区测量，仅在层1即可实现，例如基于CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量，或者进行空域滤波的层1参考信号接收功率L1-RSRP测量，而无需经过层3，更无需在层3引入额外的滤波器进行滤波操作，因此能够避免原先方案中由于额外的滤波操作所引入的时延，降低小区切换过程的复杂程度。
步骤120，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
具体地，在得到上述多个小区中每个小区的测量结果，即得到所有小区的测量结果之后，终端可以从所有小区的测量结果中选取其中一部分小区的测量结果发送到当前小区的基站，也可以直接将所有小区的测量结果发送到当前小区的基站。步骤120中所指的至少一个小区，可以是所有小区中的一个或者多个小区，进一步地可以仅是所有小区中测量结果最优的小区，也可以是所有测量结果优于当前小区的邻小区，还可以是所有测量结果优于预先设定的阈值的小区，还可以是全部小区，本公开实施例对此不作具体限定。
步骤120中，发送操作的执行可以是终端根据当前小区的基站配置执行的，也可以是终端自行触发执行的，其中终端自行触发执行发送操作的条件可以是存在测量结果优于当前小区的邻小区，或者连续多次小区测量中均存 在测量结果优于当前小区的邻小区等，本公开实施例对此不作具体限定。
当前小区的基站在接收到终端发送的至少一个小区的测量结果后，可以基于至少一个小区的测量结果进行小区切换判决，例如在至少一个小区的测量结果中包含了邻小区和当前小区的测量结果的情况下，如果邻小区的测量结果优于当前小区的测量结果，则当前小区的基站向终端下发切换命令，又例如在至少一个小区的测量结果中仅包含测量结果最优的小区的测量结果的情况下，基站可以根据接收到同个小区的测量结果的次数，判断是否进行小区切换。
本公开实施例提供的方法，可以基于各个小区对应的CSI-RS资源集合进行小区测量，进而将测量结果发送至当前小区的基站用于小区切换判决。基于CSI-RS资源集合进行小区测量，仅在层1即可实现，无需经过层3，更无需在层3引入额外的滤波器进行滤波操作，因此能够避免由于额外的滤波操作所引入的时延，降低小区切换过程的复杂程度，从而提高终端的数据传输质量，保证数据传输链路的可靠性。
基于上述任一实施例，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置。
具体地，CSI-RS资源集合与小区是一一对应的，为每个小区一对一配置CSI-RS资源集合，使得终端可以通过每个小区自身对应的CSI-RS资源集合实现小区测量，有助于实现多个小区的并行小区测量，从而进一步缩短小区测量时间，减小切换时延。
在此基础上，可以将上述的多个CSI-RS资源集合，即所有CSI-RS资源集合关联至同一个CSI上报配置，从而实现所有CSI-RS资源集合的CSI上报的统一配置。此处所指的CSI上报配置可以包括CSI测量结果的上报机制，例如周期性上报、半持续性上报或者非周期性上报，还可以包括上报的测量结果中需要包含的信息，例如CSI上报配置可以指示终端周期上报每个CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，也可以指示终端周期上报最优CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，以及最优CSI-RS资源集合对应小区ID，此处 的最优CSI-RS资源集合即上述多个CSI-RS资源集合中测量结果最优的CSI-RS资源集合。
将上述多个CSI-RS资源集合关联至同一个CSI上报配置，是指上述多个CSI-RS资源集合的测量结果上报，均需要根据同一个CSI上报配置所指示的信息执行，例如CSI上报配置中指示的上报机制为周期性上报，则上述多个CSI-RS资源集合的测量结果均需要周期性上报，又例如CSI上报配置中指示的上报的测量结果中需要包含最优L1-RSRP测量值，则上述多个CSI-RS资源集合上报的测量结果均需包含最优L1-RSRP测量值。
例如，N个CSI-RS资源集合关联至1个CSI上报配置，该上报配置中，可以配置终端周期上报每个资源集合对应的最优L1-RSRP及其对应的CSI-RS资源索引。由此，终端每次上报N个L1-RSRP测量值，以及N个CSI-RS资源索引。以CSI-RS资源集合i为例，其包含M i个CSI-RS资源，其中第7个CSI-RS资源的L1-RSRP测量值最大，具体表示为
Figure PCTCN2021124701-appb-000001
将
Figure PCTCN2021124701-appb-000002
进行上报，同时上报第7个CSI-RS资源的索引。
基于上述任一实施例，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态。
具体地，CSI-RS资源集合与小区是一一对应的，为每个小区一对一配置CSI-RS资源集合，使得终端可以通过每个小区自身对应的CSI-RS资源集合实现小区测量，有助于实现多个小区的并行小区测量，从而进一步缩短小区测量时间，减小切换时延。在此基础上，针对上述的多个CSI-RS资源集合，即所有CSI-RS资源集合，分别为每个CSI-RS资源集合关联一个CSI上报配置，因此使得不同的CSI-RS资源集合可以对应相同或者不同的CSI上报配置，提高CSI上报的灵活性。
此外，CSI上报状态为CSI上报配置的上层概念，触发CSI上报状态即可实现与该CSI上报状态对应的所有CSI上报配置的触发，建立一个或者多个CSI上报配置与一个CSI上报状态之间的对应关系，可以实现CSI上报配置的同步触发。例如，配置了N＝2个CSI上报状态，CSI上报状态1关联了 M＝3个CSI上报配置。每个上报配置关联一个CSI-RS资源集合，上报相应的测量结果。由于每个CSI-RS资源集合对应一个小区，因此CSI上报状态1可以上报M＝3个小区的测量结果。CSI上报状态2关联了N＝2个CSI上报配置。每个上报配置关联一个CSI-RS资源集合，对应一个小区。这样，CSI上报状态2可以上报N＝2个小区的测量结果。
基于上述任一实施例，每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
具体地，一个CSI-RS资源集合包含了至少一个CSI-RS资源，单个CSI-RS资源集合中的单个CSI-RS资源对应一个小区，不同CSI-RS资源对应不同小区，CSI-RS资源与小区之间的对应关系，使得终端可以通过每个小区自身对应的CSI-RS资源实现小区测量，有助于实现多个小区的并行小区测量，从而进一步缩短小区测量时间，减小切换时延。
在此基础上，将一个CSI-RS资源集合关联至一个CSI上报配置，从而实现该CSI-RS资源集合中所有CSI-RS资源的CSI上报的统一配置。
将一个CSI-RS资源集合关联至一个CSI上报配置，是指一个CSI-RS资源集合中的每个CSI-RS资源的测量结果上报，均需要根据同一个CSI上报配置所指示的信息执行，例如CSI上报配置中指示的上报机制为周期性上报，则一个CSI-RS资源集合中所有CSI-RS资源的测量结果均需要周期性上报。
基于上述任一实施例，步骤110包括：
根据CSI上报配置中的指示，对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的一种或多种。
具体地，在预先将CSI-RS资源集合关联至CSI上报配置的情况下，针对任一CSI-RS上报配置，可以根据该上报配置中的指示的测量结果中需要包含的信息，对与该上报配置相关联的CSI-RS资源集合进行测量，其具体测量方式可以是层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的 层3参考信号接收功率L3-RSRP测量中的任意一种，或者是至少两种的组合。
需要说明的是，在仅对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量和/或空域滤波的层1参考信号接收功率L1-RSRP测量，而不进行层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量时，小区测量无需经过层3，更无需在层3引入额外的滤波器进行滤波操作，因此能够避免原先方案中由于额外的滤波操作所引入的时延，降低小区切换过程的复杂程度。基于上述任一实施例，步骤110中，所述对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的一种或多种，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的多种，得到每个CSI-RS资源的L1-RSRP测量值、全部L1-RSRP测量结果的平均值、L3-RSRP测量值、全部L3-RSRP测量结果的平均值中的多种，并据此确定每个CSI上报配置的测量结果。
具体地，针对应用多种测量方式的情况，可以结合各种测量方式下的测量结果，以确定CSI上报配置的测量结果。
基于上述任一实施例，步骤110中，所述对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，得到每个CSI-RS资源的L1-RSRP测量值；
基于每个CSI-RS资源的L1-RSRP测量值，确定对应每个CSI上报配置的测量结果。
具体地，每个CSI上报配置对应的CSI-RS资源集合均可以包括一个或者多个CSI-RS资源。在分别对每个CSI上报配置对应的CSI-RS资源集合进行测量时，可以分别对各个CSI上报配置对应的CSI-RS资源集合中的每个 CSI-RS资源进行L1-RSRP测量，从而得到各个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源的L1-RSRP测量值。
在得到各个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源的L1-RSRP测量值后，可以分别从每个CSI-RS资源集中选取最优的L1-RSRP测量值，作为对应CSI-RS资源集合整体的L1-RSRP测量值，可以将最优的L1-RSRP测量值添加在对应CSI上报配置的测量结果中，还可以将最优的L1-RSRP测量值对应的CSI-RS资源的资源索引也添加在对应CSI上报配置的测量结果中，本公开实施例对此不作具体限定。
基于上述任一实施例，步骤110中，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层1参考信号接收功率L1-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，将全部L1-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
具体地，每个CSI上报配置对应的CSI-RS资源集合均可以包括一个或者多个CSI-RS资源。在分别对每个CSI上报配置对应的CSI-RS资源集合进行测量时，针对任一CSI上报配置，可以对该CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，从而得到该CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源的L1-RSRP测量值，进而对所有CSI-RS资源的L1-RSRP测量值求平均，将均值作为该CSI上报配置的测量结果。
基于上述任一实施例，所述对每个CSI上报配置对应的CSI-RS资源集合进行层3参考信号接收功率L3-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，得到每个CSI-RS资源的L3-RSRP测量值；
基于所述每个CSI-RS资源的L3-RSRP测量值，确定对应每个CSI上报配置的测量结果。
具体地，每个CSI上报配置对应的CSI-RS资源集合均可以包括一个或者 多个CSI-RS资源。在分别对每个CSI上报配置对应的CSI-RS资源集合进行测量时，可以分别对各个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，从而得到各个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源的L3-RSRP测量值。
在得到各个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源的L3-RSRP测量值后，可以分别从每个CSI-RS资源集中选取最优的L3-RSRP测量值，作为对应CSI-RS资源集合整体的L3-RSRP测量值，可以将最优的L3-RSRP测量值添加在对应CSI上报配置的测量结果中，还可以将最优的L3-RSRP测量值对应的CSI-RS资源的资源索引也添加在对应CSI上报配置的测量结果中，本公开实施例对此不作具体限定。
基于上述任一实施例，步骤110中，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层3参考信号接收功率L3-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，将全部L3-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
具体地，每个CSI上报配置对应的CSI-RS资源集合均可以包括一个或者多个CSI-RS资源。在分别对每个CSI上报配置对应的CSI-RS资源集合进行测量时，针对任一CSI上报配置，可以对该CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，从而得到该CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源的L3-RSRP测量值，进而对所有CSI-RS资源的L3-RSRP测量值求平均，将均值作为该CSI上报配置的测量结果。
基于上述任一实施例，针对CSI-RS资源集合与小区一一对应的情况，步骤110包括：
对每个小区对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量。
具体地，在对任一小区进行小区测量时，可以对该小区对应的CSI-RS资 源集合进行L1-RSRP测量，从而得到该小区对应的L1-RSRP测量值。针对各个小区均可执行上述操作，从而可以得到各个小区分别对应的L1-RSRP测量值。此处，基于CSI-RS资源的RSRP测量是在层1即可实现，无需引入额外的滤波器进行滤波操作，因此缩小了小区切换时延。
基于上述任一实施例，步骤110包括：
对每个小区对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，得到每个CSI-RS资源集合中每个CSI-RS资源的L1-RSRP测量值；
分别基于每个CSI-RS资源集合中每个CSI-RS资源的L1-RSRP测量值，确定对应每个小区的测量结果。
具体地，每个小区分别对应的CSI-RS资源集合均可以包括一个或者多个CSI-RS资源。在分别对每个小区进行小区测量时，可以分别对各个小区对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，从而得到各个小区对应的CSI-RS资源集合中的每个CSI-RS资源的L1-RSRP测量值。
在得到各个小区对应的CSI-RS资源集合中的每个CSI-RS资源的L1-RSRP测量值后，可以分别从每个CSI-RS资源集中选取最优的L1-RSRP测量值，作为对应CSI-RS资源集合整体的L1-RSRP测量值，可以将最优的L1-RSRP测量值添加在对应小区的测量结果中，还可以将最优的L1-RSRP测量值对应的CSI-RS资源的资源索引也添加在对应小区的测量结果中，本公开实施例对此不作具体限定。
基于上述任一实施例，每个CSI-RS资源集合均配置有对应小区的小区ID。
具体地，CSI-RS资源集合和小区一一对应，每个CSI-RS资源集合均配置有用于标识对应小区的小区ID。终端可以根据CSI-RS资源集合中配置的小区ID，确定CSI-RS资源集合与小区之间的一一对应关系，终端还可以在向当前小区的基站上报基于CSI-RS资源集合的测量结果时，在测量结果中加入对应小区的小区ID，以便于当前小区的基站在接收到测量结果后，能够获知测量结果与小区之间的对应关系，从而判断是否需要进行小区切换。
基于上述任一实施例，至少一个小区的测量结果包括至少一个小区的小 区ID、与至少一个小区对应的CSI-RS资源集合的集合索引、与至少一个小区对应的CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与至少一个小区对应的CSI-RS资源集合的预编码指示PMI中的至少一种。
具体地，终端向基站发送的至少一个小区的测量结果之前，可以首先确定需要发送测量结果的小区。随后，基于需要发送测量结果的小区所对应的CSI-RS资源集合，对需要发送测量结果的小区进行信道状态信息的计算，从而得到需要发送测量结果的小区的PMI(Precoding Matrix Indicator，预编码指示)。对应在至少一个小区的测量结果中，也可以包含至少一个小区对应CSI-RS资源集合的PMI。
例如，当前小区的基站可以为终端配置N个CSI-RS资源集合，每个CSI-RS资源集合对应一个小区。其中，资源集合i中包含M i个CSI-RS资源，i＝0,1，…,N-1，且N大于等于1。每个CSI-RS资源集合均配置一个小区ID，用于指示对应的CSI-RS资源集合由哪一个小区发送。CSI-RS资源周期性发送。
终端对N个CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量。其中，对于CSI-RS资源集合i，可以得到M i个L1-RSRP测量值，可以将M i个L1-RSRP测量值中的最优测量值作为CSI-RS资源集合i的L1-RSRP测量值。
终端将当前小区对应的L1-RSRP测量值与邻小区对应的L1-RSRP测量值进行比较，若邻小区对应的L1-RSRP测量值优于源基站对应的L1-RSRP测量值，则将邻小区对应的L1-RSRP测量值上报给当前小区的基站，同时上报的还有此L1-RSRP测量值对应的CSI-RS资源索引。此外，还可以将此L1-RSRP测量值对应的CSI-RS资源集合的索引或者是此L1-RSRP测量值对应的小区ID上报给当前小区的基站。
本公开实施例提供的方法，为各个小区分别配置的CSI-RS资源集合不仅可用于小区测量，同时还可以用于PMI的测量反馈，在反馈小区测量结果的同时反馈PMI，与常规的在确定进行小区切换之后才反馈PMI的方案相比，本公开实施例在确定进行小区切换之前即完成了PMI的反馈，有助于简化小 区切换流程，缩短小区切换时延。
基于上述任一实施例，步骤120包括：
基于当前小区的基站的测量结果上报配置，和/或，基于预定义规则，将所有小区中的至少一个小区的测量结果发送至当前小区的基站。
具体地，终端向当前小区的基站发送至少一个小区的测量结果的方式有三种，一种是根据当前小区的基站预先配置的测量结果上报配置进行发送，此处的测量结果上报配置具体可以包括需要反馈测量结果的小区，反馈测量结果的周期，还可以包含反馈的测量结果中包含的信息等,例如测量结果上报配置可以指示终端周期上报每个CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，也可以指示终端周期上报最优CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，以及最优CSI-RS资源集合对应小区ID。另一种是根据预定义规则，由终端自行判断小区测量所得的测量结果是否符合预定义规则，进而判断是否进行小区测量结果的反馈。此外，还有一种方式是可以根据当前小区的基站预先配置的测量结果上报配置，同时结合预定义规则，由终端自行判断是否进行小区测量结果的反馈。
进一步地，预定义规则可以是存在测量结果优于当前小区的邻小区，或者存在测量结果优于预先设定的测量阈值的邻小区，再或者连续多次测量所得的当前小区的测量结果均未达到预先设定的测量阈值等，本公开实施例对此不作具体限定。
例如，假设资源集合0为当前小区的基站发送的CSI-RS资源集合，对应可以获得M 0个L1-RSRP测量值，其中取值最大的L1-RSRP测量值为第三个CSI-RS资源对应的RSRP，具体表示为
Figure PCTCN2021124701-appb-000003
而其余N－1个CSI-RS资源集合中，取值最大的L1-RSRP测量值为CSI-RS资源集合3中的第五个CSI-RS资源对应的RSRP，具体表示为
Figure PCTCN2021124701-appb-000004
若
Figure PCTCN2021124701-appb-000005
则说明当前小区质量最好，不需要进行切换，此时终端不进行任何上报；若
Figure PCTCN2021124701-appb-000006
则说明邻小区质量更好，建议进行切换。此时终端将触发小区切换上报，将
Figure PCTCN2021124701-appb-000007
所对应的CSI-RS资源集合3的索引，以及CSI-RS资源集合3中第五 个CSI-RS资源的索引进行上报。
此外，为了保证稳定性，可以预定义预设次数S，S大于1。当邻小区的RSRP累计S次超过当前小区的RSRP时，触发终端的切换上报。
基于上述任一实施例，预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
具体地，预定义规则可以是存在测量结果优于当前小区的邻小区，此时终端如果从当前小区切换至测量结果更优的邻小区，则可能实现链路质量的优化，建议进行切换，终端可以将测量结果更优的邻小区的测量结果发送到当前小区的基站。
考虑到链路质量的稳定性，预定义规则也可以是任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数，即存在一个邻区在连续多次小区测量中的测量结果均优于当前小区，此时终端如果从当前小区切换至测量结果更优的邻小区，则可能实现链路质量的优化，建议进行切换，终端可以将测量结果更优的邻小区的测量结果发送到当前小区的基站。
基于上述任一实施例，步骤120中，将所有小区中的至少一个小区的测量结果发送至当前小区的基站，包括：将所有小区的测量结果中的最优测量结果发送至当前小区的基站。
其中，在发送测量结果时，可以仅发送一个小区的测量结果，即所有小区的测量结果中的最优的测量结果，具体可以发送测量结果最优的CSI-RS资源集合的集合索引，也可以发送测量结果最优的CSI-RS资源集合内配置的小区ID，同时还可以发送测量结果最优的CSI-RS资源集合中的各个CSI-RS资源的最优测量值，以及最优测量值对应的CSI-RS资源的资源索引，还可以一并发送测量结果最优的CSI-RS资源的PMI，本公开实施例对此不作具体限定。
基于上述任一实施例，步骤120中，基于预定义规则，将所有小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
当满足预定义规则时，通过随机接入资源或上行资源请求将至少一个小 区的测量结果发送至当前小区的基站。
具体地，当测量所得的各个小区的测量结果满足预定义规则时，终端自行触发测量结果的反馈。终端自行触发的反馈具体可以通过随机接入资源进行反馈，即在PRACH(Physical Random Access Channel，物理随机接入信道)过程进行测量结果的反馈；也可以通过上行资源请求进行反馈，即通过上行资源请求的方式，由当前小区的基站分配上行资源进行测量结果的反馈，本公开实施例对此不作具体限定。
基于上述任一实施例，步骤120之后，还包括：
向待切换的目标小区的基站发送随机接入前导码序列；
接收目标小区的基站基于随机接入前导码序列反馈的随机接入响应消息。
具体地，在终端向当前小区的基站发送至少一个小区的测量结果之后，当前小区的基站会根据接收到的测量结果进行小区切换判决，如果判决结果为执行小区切换，当前小区的基站便会向终端下发小区切换命令，小区切换命令指示包含待切换的目标小区。
终端在接收到小区切换命令后，可以向待切换的目标小区的基站发送随机接入前导码序列preamble，目标小区的基站在检测到preamble后返回随机接入响应消息(Random Access Response，RAR)，终端可以在PDCCH(Physical Downlink Control Channel，物理下行控制信道)/PDSCH(Physical Downlink Shared Channel，物理下行共享信道)上接收随机接入响应消息RAR。
通常在目标小区的接入过程中，终端在接收到随机接入响应消息之后，还需要在PUSCH(Physical Uplink Shared Channel，上行物理共享信道)上发送RRC请求，在PDSCH上接收目标小区的基站返回的竞争解决消息，且将TC-RNTI(Temporary Cell-Radio Network Temporary Identity)升级为C-RNTI(Cell-Radio Network Temporary Identity)。此后，由目标小区的基站为终端配置信道测量信息，终端上报信道状态信息后，进行新的数据传输。
如前所述，目标小区的基站需要为终端配置新的信道测量信息，并获得终端的反馈后，才开始新的数据传输。这同样导致了较大的切换时延。而本 公开实施例中，由于当前小区的基站已经预先为终端配置各个小区对应的CSI-RS资源集合，其中也包括目标小区对应的CSI-RS资源集合，因此在进行小区切换时，终端处已配置有目标小区对应的CSI-RS资源集合，目标小区的基站无需重新配置信道测量信息，因此简化了小区切换流程，进一步降低了小区切换时延。
此外，在通常的目标小区的接入过程中，终端需要通过前述的随机接入过程接入目标小区，过程较为复杂，时延较大。基于上述任一实施例，所述接收目标小区的基站基于随机接入前导码序列反馈的随机接入响应消息，之后还包括：
若随机接入响应消息中包括定时提前信息，则基于随机接入响应消息中的定时提前信息接入目标小区；
否则，从当前小区的基站预先配置的至少一个小区的定时提前信息中确定目标小区的定时提前信息，并基于目标小区的定时提前信息接入目标小区。
具体地，一种实现方式中，随机接入响应消息中包含有定时提前(Timing advance，TA)信息，但是不包含上行信道资源分配信息，终端可以基于随机接入响应消息中包含的定时提前信息接入目标小区。
另一种实现方式中，随机接入响应消息仅用于随机接入的确认，既不包含定时提前信息，也不包含上行信道资源分配信息，此处终端可以从当前小区的基站预先配置给终端的多个小区的定时提前信息中，选取出目标小区的定时提前信息，进而通过预先配置的定时提前信息，接入目标小区。
本公开实施例提供的方法，在目标小区的接入过程中，终端仅需要接收到随机接入响应消息即可进行目标小区接入，简化了目标小区接入的复杂过程，降低了小区切换时延。
基于上述任一实施例，所述向待切换的目标小区的基站发送随机接入前导码序列，包括：
从目标小区对应的CSI-RS资源集合中的每个CSI-RS资源中选取测量结果最优的CSI-RS对应的波束作为前导码序列发送波束，基于前导码序列发送波束向目标小区的基站发送随机接入前导码序列。
具体地，在步骤110中已经基于目标小区对应的CSI-RS资源集合对目标小区进行了小区测量，并得到了目标小区对应的CSI-RS资源集合中每个CSI-RS资源的L1-RSRP测量值，并从中确定出了最优L1-RSRP测量值对应的CSI-RS资源，即最优的CSI-RS。
在进行小区切换的过程中，可以将最优的CSI-RS对应的波束作为随机接入前导码序列的发送波束，用于在PRACH资源上发送随机接入前导码序列。本公开实施例中应用目标小区的测量结果中最优的CSI-RS资源对应的波束作为前导码序列发送波束，能够有效保证随机接入的成功率。
基于上述任一实施例，该方法还包括：
接收当前小区的基站发送的定时提前信息或者定时提前调整信息，定时提前信息和定时提前调整信息用于终端接入目标小区。
此处，当前小区的基站向终端发送定时提前信息或者定时提前调整信息可以发生确定小区切换之前，也可以发生在确定小区切换之后，具体发送的定时提前信息或者定时提前调整信息可以是对应于每个小区的，也可以是仅对应于目标小区的，本公开实施例对此不作具体限定。
此处，当前小区的基站发送的对应于各个小区的定时提前信息或者定时提前调整信息，可以是根据各个小区的基站部署确定的。例如在高铁场景下，基于轨道与多个基站的位置关系即可确定切换时各个小区的定时提前信息。
需要说明的是，在当前小区的基站已经预先将各个小区的定时提前信息配置给终端的情况下，发生小区切换时，终端也可以不执行随机接入过程。当前小区的基站在下发小区切换命令时，还可以一并将目标小区的RRC参数等配置信息配置到终端，终端在得到RRC参数等配置信息后，即可以实现与目标小区之间的数据传输。
例如，当前小区的基站可以通过下表示出的形式将包含当前小区和各个邻小区在内的所有小区的定时前提配置给终端：
PCI0 PCI1 …… PCIN-2 PCIN-1
TA0 TA1 …… TAN-2 TAN-1
其中，PCI(Physical Cell Identifier，物理小区标识)用于区分不同的小 区，每个小区均对应一个定时提前TA。
基于上述任一实施例，图3为本公开另一实施例提供的小区切换方法的流程示意图，如图3所示，该方法的执行主体为基站，具体为终端当前接入小区的基站，该方法包括：
步骤210，接收终端发送的至少一个小区的测量结果；至少一个小区的测量结果是终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的。
此处的多个小区包括终端当前接入的小区，即当前小区，也包括当前小区的邻小区，邻小区的数量可以是一个或者多个。
CSI-RS资源集合即CSI-RS资源的集合，每个CSI-RS资源集合可以包括一个或者多个CSI-RS资源。
在步骤210执行之前，可以预先为每个小区对应配置CSI-RS资源集合，每个小区对应的CSI-RS资源集合可以是当前小区的基站配置给终端的。此处小区与CSI-RS资源集合之间的对应关系，可以是一一对应，也可以是每个小区对应多个CSI-RS资源集合，还可以是每个CSI-RS资源集合对应多个小区，本公开实施例对此不作具体限定。
基于每个小区分别对应的CSI-RS资源集合，终端可以对每个小区进行小区测量，从而得到每个小区的测量结果。此处小区的测量结果具体反映的是小区对应的CSI-RS资源集合的测量结果，相较于基于SSB测量L3-RSRP的小区测量方法，本公开实施例中为每个小区分别配置CSI-RS资源集合用于小区测量，仅在层1即可实现，例如基于CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量，或者进行空域滤波的层1参考信号接收功率L1-RSRP测量，而无需经过层3，更无需在层3引入额外的滤波器进行滤波操作，因此能够避免原先方案中由于额外的滤波操作所引入的时延，降低小区切换过程的复杂程度。
在得到上述多个小区的测量结果，即得到所有小区的测量结果之后，终端可以从所有小区的测量结果中选取其中一部分小区的测量结果发送到当前小区的基站，也可以直接将所有小区的测量结果发送到当前小区的基站，相 应地，当前小区的基站可以接收终端发送的一部分小区的测量结果，也可以接收终端发送的所有小区的测量结果。本公开实施例中所指的至少一个小区，可以是所有小区中的一个或者多个小区，进一步地可以仅是所有小区中测量结果最优的小区，也可以是所有测量结果优于当前小区的邻小区，还可以是所有测量结果优于预先设定的阈值的小区，还可以是全部小区，本公开实施例对此不作具体限定。
需要说明的是，发送操作的执行可以是终端根据当前小区的基站配置执行的，也可以是终端自行触发执行的，其中终端自行触发执行发送操作的条件可以是存在测量结果优于当前小区的邻小区，或者连续多次小区测量中均存在测量结果优于当前小区的邻小区等，本公开实施例对此不作具体限定。
步骤220，基于至少一个小区的测量结果进行小区切换判决。
具体地，当前小区的基站在接收到终端发送的至少一个小区的测量结果后，可以基于至少一个小区的测量结果进行小区切换判决，例如在至少一个小区的测量结果中包含了邻小区和当前小区的测量结果的情况下，如果邻小区的测量结果优于当前小区的测量结果，则当前小区的基站向终端下发切换命令，又例如在至少一个小区的测量结果中仅包含测量结果最优的小区的测量结果的情况下，基站可以根据接收到同个小区的测量结果的次数，判断是否进行小区切换。
本公开实施例提供的方法，基站可以基于终端通过各个小区对应的CSI-RS资源集合进行小区测量所得的测量结果进行小区切换判决。基于CSI-RS资源集合进行小区测量，仅在层1即可实现，无需经过层3，更无需在层3引入额外的滤波器进行滤波操作，因此能够避免由于额外的滤波操作所引入的时延，降低小区切换过程的复杂程度，从而提高终端的数据传输质量，保证数据传输链路的可靠性。
基于上述任一实施例，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置。
具体地，CSI-RS资源集合与小区是一一对应的，为每个小区一对一配置CSI-RS资源集合，使得终端可以通过每个小区自身对应的CSI-RS资源集合 实现小区测量，有助于实现多个小区的并行小区测量，从而进一步缩短小区测量时间，减小切换时延。
在此基础上，可以将上述的多个CSI-RS资源集合，即所有CSI-RS资源集合关联至同一个CSI上报配置，从而实现所有CSI-RS资源集合的CSI上报的统一配置。此处所指的CSI上报配置可以包括CSI测量结果的上报机制，例如周期性上报、半持续性上报或者非周期性上报，还可以包括上报的测量结果中需要包含的信息，例如CSI上报配置可以指示终端周期上报每个CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，也可以指示终端周期上报最优CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，以及最优CSI-RS资源集合对应小区ID，此处的最优CSI-RS资源集合即上述多个CSI-RS资源集合中测量结果最优的CSI-RS资源集合。
将上述多个CSI-RS资源集合关联至同一个CSI上报配置，是指上述多个CSI-RS资源集合的测量结果上报，均需要根据同一个CSI上报配置所指示的信息执行，例如CSI上报配置中指示的上报机制为周期性上报，则上述多个CSI-RS资源集合的测量结果均需要周期性上报，又例如CSI上报配置中指示的上报的测量结果中需要包含最优L1-RSRP测量值，则上述多个CSI-RS资源集合上报的测量结果均需包含最优L1-RSRP测量值。
基于上述任一实施例，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态。
具体地，CSI-RS资源集合与小区是一一对应的，为每个小区一对一配置CSI-RS资源集合，使得终端可以通过每个小区自身对应的CSI-RS资源集合实现小区测量，有助于实现多个小区的并行小区测量，从而进一步缩短小区测量时间，减小切换时延。在此基础上，针对上述的多个CSI-RS资源集合，即所有CSI-RS资源集合，分别为每个CSI-RS资源集合关联一个CSI上报配置，由此使得不同的CSI-RS资源集合可以对应相同或者不同的CSI上报配置，提高CSI上报的灵活性。
此外，CSI上报状态为CSI上报配置的上层概念，触发CSI上报状态即可实现与该CSI上报状态对应的所有CSI上报配置的触发，建立一个或者多个CSI上报配置与一个CSI上报状态之间的对应关系，可以实现CSI上报配置的同步触发。
基于上述任一实施例，每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
具体地，一个CSI-RS资源集合包含了至少一个CSI-RS资源，单个CSI-RS资源集合中的单个CSI-RS资源对应一个小区，不同CSI-RS资源对应不同小区，CSI-RS资源与小区之间的对应关系，使得终端可以通过每个小区自身对应的CSI-RS资源实现小区测量，有助于实现多个小区的并行小区测量，从而进一步缩短小区测量时间，减小切换时延。
在此基础上，将一个CSI-RS资源集合关联至一个CSI上报配置，从而实现该CSI-RS资源集合中所有CSI-RS资源的CSI上报的统一配置。
将一个CSI-RS资源集合关联至一个CSI上报配置，是指一个CSI-RS资源集合中的每个CSI-RS资源的测量结果上报，均需要根据同一个CSI上报配置所指示的信息执行，例如CSI上报配置中指示的上报机制为周期性上报，则一个CSI-RS资源集合中所有CSI-RS资源的测量结果均需要周期性上报。基于上述任一实施例，步骤210之前还包括：
向终端发送资源集合配置信息，资源集合配置信息包括小区数量个CSI-RS资源集合的配置信息，每个CSI-RS资源集合的配置信息包括对应小区的小区ID。
此处资源配置信息用于指示各个小区相对应的CSI-RS资源集合的配置信息，在小区切换之前，基站生成资源集合配置信息并将资源集合配置信息发送到终端，终端在接收到资源集合配置信息后，可以根据资源集合配置信息为每个小区配置对应的CSI-RS资源集合，每个CSI-RS资源集合的配置信息中包含用于标识对应小区的小区ID。终端可以根据CSI-RS资源集合的配置信息中的小区ID，确定CSI-RS资源集合与小区之间的一一对应关系。
此后，终端还可以在向当前小区的基站上报基于CSI-RS资源集合的测量 结果时，在测量结果中加入对应小区的小区ID，以便于当前小区的基站在接收到测量结果后，能够根据接收到的测量结果中包含的小区ID，获知测量结果与小区之间的对应关系，从而判断是否需要进行小区切换。
基于上述任一实施例，至少一个小区的测量结果包括至少一个小区的小区ID、与至少一个小区对应的CSI-RS资源集合的集合索引、与至少一个小区对应的CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与至少一个小区对应的CSI-RS资源集合中至少一个CSI-RS资源的预编码指示PMI中的至少一种。
具体地，终端向基站发送的至少一个小区的测量结果之前，可以首先确定需要发送测量结果的小区。随后，基于需要发送测量结果的小区所对应的CSI-RS资源集合，对需要发送测量结果的小区进行信道状态信息的计算，从而得到需要发送测量结果的小区的PMI(Precoding Matrix Indicator，预编码指示)。对应在至少一个小区的测量结果中，也可以包含至少一个小区对应CSI-RS资源集合的PMI。相应地，基站由此接收到的至少一个小区的测量结果中，也可以包含至少一个小区对应CSI-RS资源集合的PMI。
本公开实施例提供的方法，为各个小区分别配置的CSI-RS资源集合不仅可用于小区测量，同时还可以用于PMI的测量反馈，基站在接收反馈小区测量结果的同时接收PMI，与常规的在确定进行小区切换之后才指示终端反馈PMI的方案相比，本公开实施例在确定进行小区切换之前即完成了PMI的接收，有助于简化小区切换流程，缩短小区切换时延。
基于上述任一实施例，最优测量值为对应CSI-RS资源集合中所有CSI-RS资源的层1参考信号接收功率L1-RSRP测量值的最优值。
具体地，终端执行的小区测量具体是对各个小区对应的CSI-RS资源集合分别进行L1-RSRP测量，从而得到各个小区分别对应的L1-RSRP测量值。
考虑到每个小区分别对应的CSI-RS资源集合均可以包括一个或者多个CSI-RS资源，终端在分别对每个小区进行小区测量时，可以分别对各个小区对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，从而得到各个小区对应的CSI-RS资源集合中的每个CSI-RS资源的L1-RSRP测量值。
在得到各个小区对应的CSI-RS资源集合中的每个CSI-RS资源的L1-RSRP测量值后，终端可以分别从每个CSI-RS资源集中选取最优的L1-RSRP测量值，作为对应CSI-RS资源集合整体的L1-RSRP测量值，可以将最优的L1-RSRP测量值添加在对应小区的测量结果中，还可以将最优的L1-RSRP测量值对应的CSI-RS资源的资源索引也添加在对应小区的测量结果中，本公开实施例对此不作具体限定。
基于上述任一实施例，至少一个小区的测量结果是终端基于当前小区的基站的测量结果上报配置，和/或，基于预定义规则发送的。
具体地，终端向当前小区的基站发送至少一个小区的测量结果的方式有三种，一种是根据当前小区的基站预先配置的测量结果上报配置进行发送，此处的测量结果上报配置具体可以包括需要反馈测量结果的小区，反馈测量结果的周期，还可以包含反馈的测量结果中包含的信息等，例如测量结果上报配置可以指示终端周期上报每个CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，也可以指示终端周期上报最优CSI-RS资源集合对应的最优L1-RSRP测量值及其对应的CSI-RS资源索引，以及最优CSI-RS资源集合对应小区ID。另一种是根据预定义规则，由终端自行判断小区测量所得的测量结果是否符合预定义规则，进而判断是否进行小区测量结果的反馈。此外，还有一种方式是可以根据当前小区的基站预先配置的测量结果上报配置，同时结合预定义规则，由终端自行判断是否进行小区测量结果的反馈。
进一步地，预定义规则可以是存在测量结果优于当前小区的邻小区，或者存在测量结果优于预先设定的测量阈值的邻小区，再或者连续多次测量所得的当前小区的测量结果均未达到预先设定的测量阈值等，本公开实施例对此不作具体限定。
基于上述任一实施例，预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
具体地，预定义规则可以是存在测量结果优于当前小区的邻小区，此时 终端如果从当前小区切换至测量结果更优的邻小区，则可能实现链路质量的优化，建议进行切换，终端可以将测量结果更优的邻小区的测量结果发送到当前小区的基站。
考虑到链路质量的稳定性，预定义规则也可以是任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数，即存在一个邻区在连续多次小区测量中的测量结果均优于当前小区，此时终端如果从当前小区切换至测量结果更优的邻小区，则可能实现链路质量的优化，建议进行切换，终端可以将测量结果更优的邻小区的测量结果发送到当前小区的基站。
基于上述任一实施例，至少一个小区的测量结果为所述多个小区的测量结果中的最优测量结果。
其中，基站接收到的测量结果可以仅是一个小区的测量结果，即所有小区的测量结果中的最优的测量结果，具体基站接收的可以是终端发送的测量结果最优的CSI-RS资源集合的集合索引，也可以是终端发送的测量结果最优的CSI-RS资源集合内配置的小区ID，同时还可以包括终端发送的测量结果最优的CSI-RS资源集合中各个CSI-RS资源的最优测量值，以及最优测量值对应CSI-RS资源的资源索引，还可以一并接收终端发送的测量结果最优的CSI-RS资源的PMI，本公开实施例对此不作具体限定。
基于上述任一实施例，至少一个小区的测量结果是当满足预定义规则时，终端通过随机接入资源或上行资源请求发送的。
具体地，当测量所得的各个小区的测量结果满足预定义规则时，终端自行触发测量结果的反馈。终端自行触发的反馈具体可以通过随机接入资源进行反馈，即在PRACH过程进行测量结果的反馈；也可以通过上行资源请求进行反馈，即通过上行资源请求的方式，由当前小区的基站分配上行资源进行测量结果的反馈，本公开实施例对此不作具体限定。
基于上述任一实施例，该方法还包括：
向终端发送至少一个小区的定时提前信息或定时提前调整信息，定时提前信息和定时提前调整信息用于终端接入目标小区。
具体地，基站向终端发送定时提前信息或者定时提前调整信息可以发生 确定小区切换之前，也可以发生在确定小区切换之后，具体发送的定时提前信息或者定时提前调整信息可以是对应于每个小区的，也可以是仅对应于目标小区的，本公开实施例对此不作具体限定。
此处，当前小区的基站发送的对应于各个小区的定时提前信息或者定时提前调整信息，可以是根据各个小区的基站部署确定的。例如在高铁场景下，基于轨道与多个基站的位置关系即可确定切换时各个小区的定时提前信息。
需要说明的是，在当前小区的基站已经预先将各个小区的定时提前信息配置给终端的情况下，发生小区切换时，终端也可以不执行随机接入过程。当前小区的基站在下发小区切换命令时，还可以一并将目标小区的RRC参数等配置信息配置到终端，终端在得到RRC参数等配置信息后，即可以实现与目标小区之间的数据传输。
基于上述任一实施例，一种小区切换的方法，包括如下步骤：
当前小区的基站可以为终端配置N个CSI-RS资源集合，每个CSI-RS资源集合对应一个小区。其中，资源集合i中包含M i个CSI-RS资源，i＝0,1，…,N-1，且N大于等于1。每个CSI-RS资源集合均配置一个小区ID，用于指示对应的CSI-RS资源集合由哪一个小区发送。CSI-RS资源周期性发送。
终端对N个CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量。其中，对于CSI-RS资源集合i，可以得到M i个L1-RSRP测量值，可以将M i个L1-RSRP测量值中的最优测量值作为CSI-RS资源集合i的L1-RSRP测量值。
终端将当前小区对应的L1-RSRP测量值与邻小区对应的L1-RSRP测量值进行比较，若邻小区对应的L1-RSRP测量值优于源基站对应的L1-RSRP测量值，则将邻小区对应的L1-RSRP测量值上报给当前小区的基站，同时上报的还有此L1-RSRP测量值对应的CSI-RS资源索引。此外，还可以将此L1-RSRP测量值对应的CSI-RS资源集合的索引或者是此L1-RSRP测量值对应的小区ID上报给当前小区的基站。
例如，假设资源集合0为当前小区的基站发送的CSI-RS资源集合，对应 可以获得M 0个L1-RSRP测量值，其中取值最大的L1-RSRP测量值为第三个CSI-RS资源对应的RSRP，具体表示为
Figure PCTCN2021124701-appb-000008
而其余N－1个CSI-RS资源集合中，取值最大的L1-RSRP测量值为CSI-RS资源集合3中的第五个CSI-RS资源对应的RSRP，具体表示为
Figure PCTCN2021124701-appb-000009
若
Figure PCTCN2021124701-appb-000010
则说明当前小区质量最好，不需要进行切换，此时终端不进行任何上报；若
Figure PCTCN2021124701-appb-000011
则说明邻小区质量更好，建议进行切换。此时终端将触发小区切换上报，将
Figure PCTCN2021124701-appb-000012
所对应的CSI-RS资源集合3的索引，以及CSI-RS资源集合3中第五个CSI-RS资源的索引进行上报。同时终端还可以将
Figure PCTCN2021124701-appb-000013
进行上报。或者，终端可以将CSI-RS资源集合3对应的小区ID，以及CSI-RS资源集合3中第五个CSI-RS资源的索引进行上报。此外，为了保证稳定性，可以预定义预设次数S，S大于1。当邻小区的RSRP累计S次超过当前小区的RSRP时，触发终端的切换上报。
基于上述任一实施例，一种小区切换的方法，包括如下步骤：
当前小区的基站可以为终端配置N个CSI-RS资源集合，每个CSI-RS资源集合对应一个小区。其中，资源集合i中包含M i个CSI-RS资源，i＝0,1，…,N-1，且N大于等于1。每个CSI-RS资源集合均配置一个小区ID，用于指示对应的CSI-RS资源集合由哪一个小区发送。CSI-RS资源周期性发送。
所述N个CSI-RS资源集合关联至1个CSI上报配置；或者所述N个CSI-RS资源集合中的每个资源集合分别关联至1个CSI上报配置，所述N个CSI上报配置关联至1个CSI上报状态。所述上报配置中，可以配置终端周期上报每个资源集合对应的最优L1-RSRP及其对应的CSI-RS资源索引。由此，终端每次上报N个L1-RSRP测量值，以及N个CSI-RS资源索引。以CSI-RS资源集合i为例，其包含M i个CSI-RS资源，其中第7个CSI-RS资源的L1-RSRP测量值最大，具体表示为
Figure PCTCN2021124701-appb-000014
将
Figure PCTCN2021124701-appb-000015
进行上报，同时上报第7个CSI-RS资源的索引。源基站接收到N个L1-RSRP测量值后，可以将邻小区的RSRP与当前小区的RSRP进行比较，判断是否进行小区切换。
此外，当前小区的基站还可以配置终端周期上报最优CSI-RS资源集合对 应的最优L1-RSRP测量值及其对应的CSI-RS资源索引。由此，终端每次上报1个L1-RSRP测量值和1个CSI-RS资源索引。例如，终端可以对N个CSI-RS资源集合中所有的CSI-RS资源测量的L1-RSRP进行排序。假设取值最大的L1-RSRP为CSI-RS资源集合6中的第3个CSI-RS资源。这样终端将此资源对应的L1-RSRP，表示为
Figure PCTCN2021124701-appb-000016
进行上报，同时上报CSI-RS资源集合6的索引。当前小区的基站根据周期性上报的最优资源集合索引的重复次数判断是否进行小区切换。
基于上述任一实施例，一种小区切换的方法，包括如下步骤：
终端从目标小区对应的CSI-RS资源集合中的每个CSI-RS资源中选取测量结果最优的CSI-RS对应的波束作为前导码序列发送波束，基于前导码序列发送波束向目标小区的基站发送随机接入前导码序列。
目标小区的基站在检测到随机接入前导码序列后，向终端发送随机接入响应信息。此处的随机接入响应信息中，可以包括定时提前信息，但不包括上行信道资源分配信息，此时终端可以基于随机接入响应消息中包含的定时提前信息接入目标小区。
此外，随机接入响应信息可以仅用于随机接入的确认，既不包括定时提前信息，也不包括上行信道资源分配信息。此时，终端可以从当前小区的基站预先配置给终端的多个小区的定时提前信息中，选取出目标小区的定时提前信息，进而通过预先配置的定时提前信息，接入目标小区。
目标小区在确定终端的接入后，即可与终端进行数据传输。
本公开实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例如适用的系统可以是全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)系统、高级长期演进(long term evolution advanced，LTE-A)系统、通用移动系统(universal mobile  telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G新空口(New Radio,NR)系统等。这多种系统中均包括终端设备和网络设备。系统中还可以包括核心网部分，例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。
本公开实施例涉及的终端，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备(User Equipment，UE)。无线终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)，本公开实施例中并不限定。
本公开实施例涉及的基站，可以包括多个为终端提供服务的小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol，IP)分组进行相互更换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本公开实施例涉及的网络设备可以是全球移动通信系统 (Global System for Mobile communications，GSM)或码分多址接入(Code Division Multiple Access，CDMA)中的网络设备(Base Transceiver Station，BTS)，也可以是带宽码分多址接入(Wide-band Code Division Multiple Access，WCDMA)中的网络设备(NodeB)，还可以是长期演进(long term evolution，LTE)系统中的演进型网络设备(evolutional Node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB)，也可以是家庭演进基站(Home evolved Node B，HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等，本公开实施例中并不限定。在一些网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点和分布单元(distributed unit，DU)节点，集中单元和分布单元也可以地理上分开布置。
图4为本公开实施例提供的终端的结构示意图，如图4所示，终端包括存储器420、收发机410、处理器400和用户接口430，其中：
存储器420，用于存储计算机程序；收发机410，用于在处理器400的控制下收发数据；处理器400，用于读取所述存储器420中的计算机程序并执行以下操作：
基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
具体地，收发机410，用于在处理器400的控制下接收和发送数据。
其中，在图4中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器400代表的一个或多个处理器400和存储器420代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机410可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介 质。针对不同的用户设备，用户接口还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器400负责管理总线架构和通常的处理，存储器420可以存储处理器400在执行操作时所使用的数据。
可选的，处理器400可以是CPU(中央处理器)、ASIC(Application Specific Integrated Circuit，专用集成电路)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)或CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)，处理器也可以采用多核架构。
在此需要说明的是，本公开实施例提供的上述终端，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
可选地，根据本公开一个实施例提供的终端，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
可选地，根据本公开一个实施例提供的终端，所述基于多个信道状态信息参考信号CSI-RS资源集合，对多个小区进行小区测量，包括：
根据CSI上报配置中的指示，对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的一种或多种。
可选地，根据本公开一个实施例提供的终端，所述对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行 L1-RSRP测量，得到每个CSI-RS资源的L1-RSRP测量值；
基于所述每个CSI-RS资源的L1-RSRP测量值，确定对应每个CSI上报配置的测量结果。
可选地，根据本公开一个实施例提供的终端，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层1参考信号接收功率L1-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，将全部L1-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
可选地，根据本公开一个实施例提供的终端，所述对每个CSI上报配置对应的CSI-RS资源集合进行层3参考信号接收功率L3-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，得到每个CSI-RS资源的L3-RSRP测量值；
基于所述每个CSI-RS资源的L3-RSRP测量值，确定对应每个CSI上报配置的测量结果。
可选地，根据本公开一个实施例提供的终端，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层3参考信号接收功率L3-RSRP测量，包括：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，将全部L3-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
可选地，根据本公开一个实施例提供的终端，每个CSI-RS资源集合均配置有对应小区的小区ID。
可选地，根据本公开一个实施例提供的终端，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合的预编码指示PMI中的至少一种。
可选地，根据本公开一个实施例提供的终端，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
基于所述当前小区的基站的测量结果上报配置，和/或，基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站。
可选地，根据本公开一个实施例提供的终端，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
可选地，根据本公开一个实施例提供的终端，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
将所述多个小区的测量结果中的最优测量结果发送至当前小区的基站。
可选地，根据本公开一个实施例提供的终端，所述基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
当满足所述预定义规则时，通过随机接入资源或上行资源请求将所述至少一个小区的测量结果发送至当前小区的基站。
可选地，根据本公开一个实施例提供的终端，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，之后还包括：
向待切换的目标小区的基站发送随机接入前导码序列；
接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息。
可选地，根据本公开一个实施例提供的终端，所述接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息，之后还包括：
若所述随机接入响应消息中包括定时提前信息，则基于所述随机接入响应消息中的定时提前信息接入所述目标小区；
否则，从当前小区的基站预先配置的至少一个小区的定时提前信息中确定所述目标小区的定时提前信息，并基于所述目标小区的定时提前信息接入所述目标小区。
可选地，根据本公开一个实施例提供的终端，所述向待切换的目标小区的基站发送随机接入前导码序列，包括：
从所述目标小区对应的CSI-RS资源集合中的每个CSI-RS资源中选取测量结果最优的CSI-RS资源对应的波束作为前导码序列发送波束，基于所述前导码序列发送波束向所述目标小区的基站发送所述随机接入前导码序列。
可选地，根据本公开一个实施例提供的终端，还包括：
接收当前小区的基站发送的定时提前信息或者定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于终端接入目标小区。
图5为本公开实施例提供的基站的结构示意图，如图5所示，基站包括存储器520、收发机510和处理器500，其中：
存储器520，用于存储计算机程序；收发机510，用于在处理器500的控制下收发数据；处理器500，用于读取所述存储器520中的计算机程序并执行以下操作：
接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
基于所述至少一个小区的测量结果进行小区切换判决。
具体地，收发机510，用于在处理器500的控制下接收和发送数据。
其中，在图5中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器500代表的一个或多个处理器500和存储器520代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机510可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。针对不同的用户设备，用户接口还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器500负责管理总线架构和通常的处理，存储器520可以存储处理器500在执行操作时所使用的数据。
可选的，处理器500可以是CPU(中央处理器)、ASIC(Application Specific Integrated Circuit，专用集成电路)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)或CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)，处理器也可以采用多核架构。
在此需要说明的是，本公开实施例提供的上述基站，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
可选地，根据本公开一个实施例提供的基站，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
可选地，根据本公开一个实施例提供的基站，所述接收终端发送的至少一个小区的测量结果，之前还包括：
向所述终端发送资源集合配置信息，所述资源集合配置信息包括小区数量个CSI-RS资源集合的配置信息，每个CSI-RS资源集合的配置信息包括对应小区的小区ID。
可选地，根据本公开一个实施例提供的基站，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合中至少一个CSI-RS资源的预编码指示PMI中的至少一种。
可选地，根据本公开一个实施例提供的基站，所述最优测量值为对应所述CSI-RS资源集合中所有CSI-RS资源的层1参考信号接收功率L1-RSRP测量值的最优值。
可选地，根据本公开一个实施例提供的基站，所述至少一个小区的测量结果是所述终端基于当前小区的基站的测量结果上报配置，和/或，基于预定义规则发送的。
可选地，根据本公开一个实施例提供的基站，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
可选地，根据本公开一个实施例提供的基站，所述至少一个小区的测量结果为所述多个小区的测量结果中的最优测量结果。
可选地，根据本公开一个实施例提供的基站，所述至少一个小区的测量结果是当满足所述预定义规则时，所述终端通过随机接入资源或上行资源请求发送的。
可选地，根据本公开一个实施例提供的基站，还包括：
向所述终端发送至少一个小区的定时提前信息或定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于所述终端接入目标小区。
基于上述任一实施例，图6为本公开实施例提供的小区切换装置的结构示意图，如图6所示，该装置包括小区测量单元610和结果发送单元620；
其中，小区测量单元610用于基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
结果发送单元620用于将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对 应一个CSI上报状态；或者，
每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，小区测量单元610用于：
根据CSI上报配置中的指示，对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的一种或多种。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，小区测量单元610用于：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，得到每个CSI-RS资源的L1-RSRP测量值；
基于所述每个CSI-RS资源的L1-RSRP测量值，确定对应每个CSI上报配置的测量结果。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，小区测量单元610用于：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，将全部L1-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此 不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，小区测量单元610用于：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，得到每个CSI-RS资源的L3-RSRP测量值；
基于所述每个CSI-RS资源的L3-RSRP测量值，确定对应每个CSI上报配置的测量结果。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，小区测量单元610用于：
对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，将全部L3-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，每个CSI-RS资源集合均配置有对应小区的小区ID。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合的预编码指示PMI中的至少一种。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此 不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，结果发送单元620用于：
基于所述当前小区的基站的测量结果上报配置，和/或，基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，结果发送单元620用于：
将所述多个小区的测量结果中的最优测量结果发送至当前小区的基站。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，结果发送单元620用于：
当满足所述预定义规则时，通过随机接入资源或上行资源请求将所述至少一个小区的测量结果发送至当前小区的基站。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，该装置还包括随机接入单元，随机接入单元用于：
向待切换的目标小区的基站发送随机接入前导码序列；
接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，该装置还包括目标小区接入单元，目标小区接入单元用于：
若所述随机接入响应消息中包括定时提前信息，则基于所述随机接入响应消息中的定时提前信息接入所述目标小区；
否则，从当前小区的基站预先配置的至少一个小区的定时提前信息中确定所述目标小区的定时提前信息，并基于所述目标小区的定时提前信息接入所述目标小区。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，随机接入单元用于：
从所述目标小区对应的CSI-RS资源集合中的每个CSI-RS资源中选取测量结果最优的CSI-RS资源对应的波束作为前导码序列发送波束，基于所述前导码序列发送波束向所述目标小区的基站发送所述随机接入前导码序列。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，该装置还包括定时提前配置单元，定时提前配置单元用于：
接收当前小区的基站发送的定时提前信息或者定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于终端接入目标小区。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，图7为本公开另一实施例提供的小区切换装置的 结构示意图，如图7所示，该装置包括结果接收单元710和切换判决单元720；
结果接收单元710用于接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
切换判决单元720用于基于所述至少一个小区的测量结果进行小区切换判决。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
每个CSI-RS资源集合对应一个小区，所有CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，该装置还包括集合配置发送单元，集合配置发送单元用于：
向所述终端发送资源集合配置信息，所述资源集合配置信息包括小区数量个CSI-RS资源集合的配置信息，每个CSI-RS资源集合的配置信息包括对应小区的小区ID。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述至少一个小区的测量结果包括所述至少一个 小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合中至少一个CSI-RS资源的预编码指示PMI中的至少一种。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述最优测量值为对应所述CSI-RS资源集合中所有CSI-RS资源的层1参考信号接收功率L1-RSRP测量值的最优值。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述至少一个小区的测量结果是所述终端基于当前小区的基站的测量结果上报配置，和/或，基于预定义规则发送的。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述至少一个小区的测量结果为所有小区的测量结果中的最优测量结果。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，所述至少一个小区的测量结果是当满足所述预定义规则时，所述终端通过随机接入资源或上行资源请求发送的。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于上述任一实施例，该装置还包括定时配置发送单元，定时配置发送单元用于：
向所述终端发送至少一个小区的定时提前信息或定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于所述终端接入目标小区。
在此需要说明的是，本公开实施例提供的小区切换装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
需要说明的是，本公开实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个处理器可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
另一方面，本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行上述各实施例提供的小区切换方法，包括：
基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行上述各实施例提供的小区切换方法，包括：
接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
基于所述至少一个小区的测量结果进行小区切换判决。
本实施例提供的处理器可读存储介质，其上存储的计算机程序使处理器能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
所述处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本领域内的技术人员应明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不 限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中，使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (58)

  1. 一种小区切换方法，其特征在于，包括：
    基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
    将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
  2. 根据权利要求1所述的小区切换方法，其特征在于，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
    每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
    每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
  3. 根据权利要求2所述的小区切换方法，其特征在于，所述基于多个信道状态信息参考信号CSI-RS资源集合，对多个小区进行小区测量，包括：
    根据CSI上报配置中的指示，对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的一种或多种。
  4. 根据权利要求3所述的小区切换方法，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，得到每个CSI-RS资源的L1-RSRP测量值；
    基于所述每个CSI-RS资源的L1-RSRP测量值，确定对应每个CSI上报配置的测量结果。
  5. 根据权利要求3所述的小区切换方法，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层1参考信号接收功率L1-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，将全部L1-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
  6. 根据权利要求3所述的小区切换方法，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行层3参考信号接收功率L3-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，得到每个CSI-RS资源的L3-RSRP测量值；
    基于所述每个CSI-RS资源的L3-RSRP测量值，确定对应每个CSI上报配置的测量结果。
  7. 根据权利要求3所述的小区切换方法，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层3参考信号接收功率L3-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，将全部L3-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
  8. 根据权利要求2所述的小区切换方法，其特征在于，每个CSI-RS资源集合均配置有对应小区的小区ID。
  9. 根据权利要求8所述的小区切换方法，其特征在于，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中的CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合的预编码指示PMI中的至少一种。
  10. 根据权利要求1所述的小区切换方法，其特征在于，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
    基于所述当前小区的基站的测量结果上报配置，和/或，基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站。
  11. 根据权利要求10所述的小区切换方法，其特征在于，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
  12. 根据权利要求10所述的小区切换方法，其特征在于，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
    将所述多个小区的测量结果中的最优测量结果发送至当前小区的基站。
  13. 根据权利要求10所述的小区切换方法，其特征在于，所述基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
    当满足所述预定义规则时，通过随机接入资源或上行资源请求将所述至少一个小区的测量结果发送至当前小区的基站。
  14. 根据权利要求1至13中任一项所述的小区切换方法，其特征在于，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，之后还包括：
    向待切换的目标小区的基站发送随机接入前导码序列；
    接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息。
  15. 根据权利要求14所述的小区切换方法，其特征在于，所述接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息，之后还包括：
    若所述随机接入响应消息中包括定时提前信息，则基于所述随机接入响应消息中的定时提前信息接入所述目标小区；
    否则，从当前小区的基站预先配置的至少一个小区的定时提前信息中确定所述目标小区的定时提前信息，并基于所述目标小区的定时提前信息接入所述目标小区。
  16. 根据权利要求14所述的小区切换方法，其特征在于，所述向待切换 的目标小区的基站发送随机接入前导码序列，包括：
    从所述目标小区对应的CSI-RS资源集合中的每个CSI-RS资源中选取测量结果最优的CSI-RS资源对应的波束作为前导码序列发送波束，基于所述前导码序列发送波束向所述目标小区的基站发送所述随机接入前导码序列。
  17. 根据权利要求1至13中任一项所述的小区切换方法，其特征在于，还包括：
    接收当前小区的基站发送的定时提前信息或者定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于终端接入目标小区。
  18. 一种小区切换方法，其特征在于，包括：
    接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
    基于所述至少一个小区的测量结果进行小区切换判决。
  19. 根据权利要求18所述的小区切换方法，其特征在于，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
    每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
    每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
  20. 根据权利要求19所述的小区切换方法，其特征在于，所述接收终端发送的至少一个小区的测量结果，之前还包括：
    向所述终端发送资源集合配置信息，所述资源集合配置信息包括小区数量个CSI-RS资源集合的配置信息，每个CSI-RS资源集合的配置信息包括对应小区的小区ID。
  21. 根据权利要求20所述的小区切换方法，其特征在于，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应 的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合中至少一个CSI-RS资源的预编码指示PMI中的至少一种。
  22. 根据权利要求21所述的小区切换方法，其特征在于，所述最优测量值为对应所述CSI-RS资源集合中所有CSI-RS资源的层1参考信号接收功率L1-RSRP测量值的最优值。
  23. 根据权利要求18所述的小区切换方法，其特征在于，所述至少一个小区的测量结果是所述终端基于当前小区的基站的测量结果上报配置，和/或，基于预定义规则发送的。
  24. 根据权利要求23所述的小区切换方法，其特征在于，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
  25. 根据权利要求23所述的小区切换方法，其特征在于，所述至少一个小区的测量结果为所述多个小区的测量结果中的最优测量结果。
  26. 根据权利要求23所述的小区切换方法，其特征在于，所述至少一个小区的测量结果是当满足所述预定义规则时，所述终端通过随机接入资源或上行资源请求发送的。
  27. 根据权利要求18至26中任一项所述的小区切换方法，其特征在于，还包括：
    向所述终端发送至少一个小区的定时提前信息或定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于所述终端接入目标小区。
  28. 一种终端，包括存储器、处理器及存储在存储器上并可在处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现如下步骤：
    基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
    将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小 区切换判决。
  29. 根据权利要求28所述的终端，其特征在于，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
    每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
    每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
  30. 根据权利要求29所述的终端，其特征在于，所述基于多个信道状态信息参考信号CSI-RS资源集合，对多个小区进行小区测量，包括：
    根据CSI上报配置中的指示，对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量、空域滤波的层1参考信号接收功率L1-RSRP测量、层3参考信号接收功率L3-RSRP测量、空域滤波的层3参考信号接收功率L3-RSRP测量中的一种或多种。
  31. 根据权利要求30所述的终端，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行层1参考信号接收功率L1-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，得到每个CSI-RS资源的L1-RSRP测量值；
    基于所述每个CSI-RS资源的L1-RSRP测量值，确定对应每个CSI上报配置的测量结果。
  32. 根据权利要求30所述的终端，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层1参考信号接收功率L1-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L1-RSRP测量，将全部L1-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
  33. 根据权利要求30所述的终端，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行层3参考信号接收功率L3-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，得到每个CSI-RS资源的L3-RSRP测量值；
    基于所述每个CSI-RS资源的L3-RSRP测量值，确定对应每个CSI上报配置的测量结果。
  34. 根据权利要求30所述的终端，其特征在于，所述对每个CSI上报配置对应的CSI-RS资源集合进行空域滤波的层3参考信号接收功率L3-RSRP测量，包括：
    对每个CSI上报配置对应的CSI-RS资源集合中的每个CSI-RS资源进行L3-RSRP测量，将全部L3-RSRP测量结果进行平均得到对应CSI上报配置的测量结果。
  35. 根据权利要求29所述的终端，其特征在于，每个CSI-RS资源集合均配置有对应小区的小区ID。
  36. 根据权利要求35所述的终端，其特征在于，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合的预编码指示PMI中的至少一种。
  37. 根据权利要求28所述的终端，其特征在于，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
    基于所述当前小区的基站的测量结果上报配置，和/或，基于预定义规则，将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站。
  38. 根据权利要求37所述的终端，其特征在于，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区的测量结果的次数大于预设次数。
  39. 根据权利要求37所述的终端，其特征在于，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
    将所述多个小区的测量结果中的最优测量结果发送至当前小区的基站。
  40. 根据权利要求37所述的终端，其特征在于，所述基于预定义规则， 将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，包括：
    当满足所述预定义规则时，通过随机接入资源或上行资源请求将所述至少一个小区的测量结果发送至当前小区的基站。
  41. 根据权利要求28至40中任一项所述的终端，其特征在于，所述将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，之后还包括：
    向待切换的目标小区的基站发送随机接入前导码序列；
    接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息。
  42. 根据权利要求41所述的终端，其特征在于，所述接收所述目标小区的基站基于所述随机接入前导码序列反馈的随机接入响应消息，之后还包括：
    若所述随机接入响应消息中包括定时提前信息，则基于所述随机接入响应消息中的定时提前信息接入所述目标小区；
    否则，从当前小区的基站预先配置的至少一个小区的定时提前信息中确定所述目标小区的定时提前信息，并基于所述目标小区的定时提前信息接入所述目标小区。
  43. 根据权利要求41所述的终端，其特征在于，所述向待切换的目标小区的基站发送随机接入前导码序列，包括：
    从所述目标小区对应的CSI-RS资源集合中的每个CSI-RS资源中选取测量结果最优的CSI-RS资源对应的波束作为前导码序列发送波束，基于所述前导码序列发送波束向所述目标小区的基站发送所述随机接入前导码序列。
  44. 根据权利要求28至40中任一项所述的终端，其特征在于，还包括：
    接收当前小区的基站发送的定时提前信息或者定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于终端接入目标小区。
  45. 一种基站，包括存储器、处理器及存储在存储器上并可在处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现如下步骤：
    接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资 源集合对所述多个小区进行小区测量得到的；
    基于所述至少一个小区的测量结果进行小区切换判决。
  46. 根据权利要求45所述的基站，其特征在于，每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合关联至一个CSI上报配置；或者，
    每个CSI-RS资源集合对应一个小区，所述多个CSI-RS资源集合中的每个CSI-RS资源集合关联至一个CSI上报配置，一个或多个CSI上报配置对应一个CSI上报状态；或者，
    每个CSI-RS资源集合中的每个CSI-RS资源对应一个小区，每个CSI-RS资源集合关联至一个CSI上报配置。
  47. 根据权利要求46所述的基站，其特征在于，所述接收终端发送的至少一个小区的测量结果，之前还包括：
    向所述终端发送资源集合配置信息，所述资源集合配置信息包括小区数量个CSI-RS资源集合的配置信息，每个CSI-RS资源集合的配置信息包括对应小区的小区ID。
  48. 根据权利要求47所述的基站，其特征在于，所述至少一个小区的测量结果包括所述至少一个小区的小区ID、与所述至少一个小区对应的所述CSI-RS资源集合的集合索引、与所述至少一个小区对应的所述CSI-RS资源集合中CSI-RS资源的最优测量值和资源索引，以及与所述至少一个小区对应的所述CSI-RS资源集合中至少一个CSI-RS资源的预编码指示PMI中的至少一种。
  49. 根据权利要求48所述的基站，其特征在于，所述最优测量值为对应所述CSI-RS资源集合中所有CSI-RS资源的层1参考信号接收功率L1-RSRP测量值的最优值。
  50. 根据权利要求45所述的基站，其特征在于，所述至少一个小区的测量结果是所述终端基于当前小区的基站的测量结果上报配置，和/或，基于预定义规则发送的。
  51. 根据权利要求50所述的基站，其特征在于，所述预定义规则包括存在测量结果优于当前小区的邻小区，或任一邻小区的测量结果优于当前小区 的测量结果的次数大于预设次数。
  52. 根据权利要求50所述的基站，其特征在于，所述至少一个小区的测量结果为所述多个小区的测量结果中的最优测量结果。
  53. 根据权利要求50所述的基站，其特征在于，所述至少一个小区的测量结果是当满足所述预定义规则时，所述终端通过随机接入资源或上行资源请求发送的。
  54. 根据权利要求45至53中任一项所述的基站，其特征在于，还包括：
    向所述终端发送至少一个小区的定时提前信息或定时提前调整信息，所述定时提前信息和所述定时提前调整信息用于所述终端接入目标小区。
  55. 一种小区切换装置，其特征在于，包括：
    小区测量单元，用于基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合，对所述多个小区进行小区测量；
    结果发送单元，用于将所述多个小区中的至少一个小区的测量结果发送至当前小区的基站，以供所述当前小区的基站基于接收到的所述至少一个小区的测量结果进行小区切换判决。
  56. 一种小区切换装置，其特征在于，包括：
    结果接收单元，用于接收终端发送的至少一个小区的测量结果；所述至少一个小区的测量结果是所述终端基于与多个小区对应的多个信道状态信息参考信号CSI-RS资源集合对所述多个小区进行小区测量得到的；
    切换判决单元，用于基于所述至少一个小区的测量结果进行小区切换判决。
  57. 一种非暂态计算机可读存储介质，其上存储有计算机程序，其特征在于，该计算机程序被处理器执行时实现如权利要求1至17中任一项所述的小区切换方法的步骤。
  58. 一种非暂态计算机可读存储介质，其上存储有计算机程序，其特征在于，该计算机程序被处理器执行时实现如权利要求18至27中任一项所述的小区切换方法的步骤。
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