CN113965969A - Cell switching method, device, base station and communication system - Google Patents
Cell switching method, device, base station and communication system Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 87
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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
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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
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The present disclosure provides a cell switching method, device, base station and communication system, and relates to the technical field of communication, wherein the method comprises: a source base station of an independent network receives a measurement report sent by a terminal, wherein the measurement report comprises measurement information of a plurality of adjacent cells of a cell to which the terminal is currently accessed, and the plurality of adjacent cells comprise a main cell group and an auxiliary cell group; the source base station determines a target main cell from the main cell group according to the measurement information of the main cell group; and the source base station sends a switching request for enabling the terminal to be accessed to the target main cell to a first target base station of a non-independent network corresponding to the target main cell, so that the first target base station determines a target auxiliary cell from the auxiliary cell group according to the measurement information of the auxiliary cell group carried in the switching request, and enables the terminal to be accessed to the target auxiliary cell after the terminal is accessed to the target main cell.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a cell switching method, an apparatus, a base station, and a communication system.
Background
Two networking modes exist in a network architecture of 5G communication, one mode is independent networking (SA), and the other mode is Non-independent Networking (NSA).
Because the network architecture of the SA is slow in construction speed and high in cost, most operators choose to construct the network architecture of the NSA in the past in order to realize the rapid popularization of 5G communication. This creates a situation where two network architectures, SA and NSA, coexist at present.
In this context, the terminal often needs to switch between the network architecture of the SA and the network architecture of the NSA.
Disclosure of Invention
The inventors have noted that, in the related art, the terminal is susceptible to communication interruption during the handover from the network architecture of the SA to the network architecture of the NSA.
The inventor analyzes that this is because the process of switching the terminal from the network architecture of the SA to the network architecture of the NSA takes a long time, which results in the terminal being vulnerable to communication interruption.
In order to solve the above problem, the embodiments of the present disclosure propose the following solutions.
According to an aspect of the embodiments of the present disclosure, a cell handover method is provided, including: a source base station of an independent network receives a measurement report sent by a terminal, wherein the measurement report comprises measurement information of a plurality of adjacent cells of a cell to which the terminal is currently accessed, and the plurality of adjacent cells comprise a main cell group and an auxiliary cell group; the source base station determines a target main cell from the main cell group according to the measurement information of the main cell group; and the source base station sends a switching request for enabling the terminal to be accessed to the target main cell to a first target base station of a non-independent network corresponding to the target main cell, so that the first target base station determines a target auxiliary cell from the auxiliary cell group according to the measurement information of the auxiliary cell group carried in the switching request, and enables the terminal to be accessed to the target auxiliary cell after the terminal is accessed to the target main cell.
In some embodiments, the method further comprises: and the source base station sends a measurement configuration message to the terminal so as to indicate the terminal to measure the signals of the plurality of adjacent cells to obtain the measurement report.
In some embodiments, the first target base station determines the target secondary cell from the set of secondary cells before the terminal accesses the target primary cell.
In some embodiments, causing the terminal to access the target secondary cell after the terminal accesses the target primary cell comprises: the first target base station sends an adding request to a second target base station of the non-independent networking corresponding to the target secondary cell; the first target base station receives a response message that the second target base station allows the terminal to access the target secondary cell; and the first target base station sends a radio resource control reconfiguration message for enabling the terminal to access the target secondary cell to the terminal.
According to another aspect of the embodiments of the present disclosure, there is provided a cell switching apparatus, including: a receiving module, configured to receive a measurement report sent by a terminal, where the measurement report includes measurement information of multiple neighboring cells of a cell to which the terminal is currently accessed, and the multiple neighboring cells include a master cell group and a secondary cell group; a determining module configured to determine a target primary cell from the group of primary cells according to measurement information of the group of primary cells; a sending module, configured to send a handover request for enabling the terminal to access the target primary cell to a first target base station of a non-independent network corresponding to the target primary cell, so that the first target base station determines a target secondary cell from the secondary cell group according to measurement information of the secondary cell group carried in the handover request, and enables the terminal to access the target secondary cell after the terminal accesses the target primary cell.
According to still another aspect of the embodiments of the present disclosure, there is provided a cell switching apparatus, including: a memory; and a processor coupled to the memory, the processor configured to perform the cell handover method of any of the above embodiments based on instructions stored in the memory.
According to still another aspect of the embodiments of the present disclosure, there is provided a base station for independent networking, including: the cell switching apparatus according to any of the above embodiments.
According to still another aspect of the embodiments of the present disclosure, there is provided a communication system including: the base station of the independent networking according to any one of the above embodiments; and the first target base station is configured to determine a target secondary cell from the secondary cell group according to the measurement information of the secondary cell group carried in the handover request; and after the terminal is accessed into the target primary cell, enabling the terminal to be accessed into the target secondary cell.
In some embodiments, the system further comprises: a second target base station of a non-independent networking configured to receive an addition request from the first target base station; sending a response message allowing the terminal to access the target secondary cell to the first target base station, so that the first target base station sends a radio resource control reconfiguration message enabling the terminal to access the target secondary cell to the terminal.
In some embodiments, the system further comprises the terminal.
According to a further aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, including computer program instructions, where the computer program instructions, when executed by a processor, implement the cell handover method according to any one of the above embodiments.
According to a further aspect of the embodiments of the present disclosure, there is provided a computer program product, including a computer program, where the computer program is executed by a processor to implement the cell switching method according to any one of the above embodiments.
In the embodiment of the disclosure, a source base station of an SA sends a handover request carrying measurement information of an auxiliary cell group to a target base station of an NSA corresponding to a target primary cell, so that the target base station can directly determine the target auxiliary cell according to the measurement information of the auxiliary cell group in the handover request, and after a terminal is accessed to the target primary cell, the terminal is accessed to the target auxiliary cell. Therefore, the terminal does not need to measure the signals of the auxiliary cell group after accessing the target main cell, and can access the target auxiliary cell without reporting the measurement result of the auxiliary cell group again, so that the time required by the terminal to switch from the network architecture of the SA to the network architecture of the NSA can be reduced, the probability of communication interruption of the terminal can be reduced, and the user experience is improved.
The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flow diagram of a method of cell handover according to some embodiments of the present disclosure;
fig. 2 is a flow chart illustrating a method of cell handover according to further embodiments of the present disclosure;
fig. 3 is a schematic structural diagram of a cell switching apparatus according to some embodiments of the present disclosure;
fig. 4 is a schematic structural diagram of a cell switching apparatus according to further embodiments of the present disclosure;
fig. 5 is a schematic structural diagram of a communication system according to some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a flow diagram of a cell handover method according to some embodiments of the present disclosure.
In step 102, the source base station of the SA receives the measurement report transmitted by the terminal.
Here, the measurement report includes measurement information of a plurality of neighbor cells of a cell to which the terminal is currently accessing, and the plurality of neighbor cells include a master cell group and a secondary cell group.
The master cell group may include one or more master cells, each corresponding to a base station of an NSA. The secondary cell group may include one or more secondary cells, each of which also corresponds to a base station of the NSA. It should be understood that different primary cells may correspond to base stations of the same or different NSAs, and different secondary cells may also correspond to base stations of the same or different NSAs.
For example, each primary cell may correspond to an Evolved Node B (eNB) of an NSA, and each secondary cell may correspond to a Next Generation Node B (Next Generation Node B, gNB) of the NSA.
The measurement information of each neighboring cell includes, but is not limited to, Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), and the like of the neighboring cell measured by the terminal.
In step 104, the source base station determines a target primary cell from the primary cell group according to the measurement information of the primary cell group.
For example, the source base station may determine, as the target primary cell, one of the primary cells in the primary cell group whose RSRP or RSRQ is the largest; for another example, the source base station may determine, as the target primary cell, one of the primary cells in the primary cell group whose RSRP and RSRQ after weighted calculation have a maximum value.
In step 106, the source base station sends a handover request for enabling the terminal to access the target primary cell to the first target base station of the NSA corresponding to the target primary cell, so that the first target base station determines the target secondary cell from the secondary cell group according to the measurement information of the secondary cell group carried in the handover request, and enables the terminal to access the target secondary cell after the terminal accesses the target primary cell.
The handover request carries measurement information of the secondary cell group in a measurement report from the terminal. The first target base station may determine the target secondary cell from the secondary cell group according to the measurement information of the secondary cell group carried in the handover request. For example, similarly, the first target base station may determine, as the target secondary cell, one of the secondary cells in the secondary cell group whose RSRP or RSRQ is largest. After the terminal accesses the target primary cell, the first target base station may enable the terminal to access the target secondary cell.
Some implementations of the source base station enabling the terminal to access the target primary cell and the first target base station enabling the terminal to access the target secondary cell will be further described later with reference to fig. 2.
In the above embodiment, the source base station of the SA sends the handover request carrying the measurement information of the secondary cell group to the target base station of the NSA corresponding to the target primary cell, so that the target base station can directly determine the target secondary cell according to the measurement information of the secondary cell group in the handover request, and after the terminal accesses the target primary cell, the terminal accesses the target secondary cell. Therefore, the terminal does not need to measure the signals of the auxiliary cell group after accessing the target main cell, and can access the target auxiliary cell without reporting the measurement result of the auxiliary cell group again, so that the time required by the terminal to switch from the network architecture of the SA to the network architecture of the NSA can be reduced, the probability of communication interruption of the terminal can be reduced, and the user experience is improved.
In addition, the terminal does not need to measure the signals of the auxiliary cell group after accessing the target main cell, and does not need to report the measurement result of the auxiliary cell group again, so that the target base station does not need to send a measurement configuration message for indicating the terminal to measure the signals of the auxiliary cell group to the terminal after the terminal accesses the target main cell. This reduces both the signaling overhead between the target cell and the terminal and the complexity of the terminal performing the operations.
The cell handover method shown in fig. 1 is further described below with reference to some embodiments.
In some embodiments, before receiving the measurement report sent by the terminal, the source base station sends a measurement configuration message to the terminal to instruct the terminal to measure signals of multiple neighboring cells to obtain the measurement report.
For example, the measurement Configuration message is a Radio Resource Control (RRC) reconfiguration message including measurement Configuration (measconfiguration) parameters. The measurement configuration parameters may include a measurement object list (e.g., frequency points of each cell in the primary cell group and the secondary cell group), a measurement identification list (e.g., identification of each cell in the primary cell group and the secondary cell group), a measurement report configuration (e.g., trigger type, interval, number of times to send a measurement report), and the like. The terminal may measure the signal strength and the signal quality of the measurement object according to the indication of the measurement configuration message to obtain a measurement report sent to the source base station.
The source base station sends the measurement configuration message of the measurement object comprising the main cell group and the auxiliary cell group to the terminal so as to receive the measurement report carrying the measurement information of the main cell group and the auxiliary cell group from the terminal subsequently, thereby ensuring that the terminal can complete cell switching according to the mode of the embodiment of the disclosure.
As some implementations, the source base station may obtain measurement configuration parameters related to the master cell group from the base station corresponding to the master cell group and obtain measurement configuration parameters related to the secondary cell group from the base station corresponding to the secondary cell group. As another implementation, the base station corresponding to the master cell group may first obtain the measurement configuration parameters related to the secondary cell group from the base station corresponding to the secondary cell group, and then, the source base station may obtain the measurement configuration parameters related to the master cell group and the secondary cell group from the base station corresponding to the master cell group.
In some embodiments, the first target base station determines the target secondary cell from the set of secondary cells before the terminal accesses the target primary cell. In this way, the first target base station can enable the terminal to access the target secondary cell more quickly after the terminal accesses the target primary cell, so that the time required for the terminal to switch from the network architecture of the SA to the network architecture of the NSA can be further reduced. This can further reduce the probability that terminal communication is interrupted, further improves user experience.
Fig. 2 is a flow chart illustrating a cell handover method according to further embodiments of the present disclosure.
As shown in fig. 2, the cell switching method includes steps 202 to 230.
In step 202, an RRC connection is established between the source base station and the terminal, and the source base station transmits a measurement configuration message including measurement configuration parameters of the primary cell group and the secondary cell group to the terminal.
In step 204, the terminal performs measurement on the signal of the current access cell and the signals of the multiple neighboring cells according to the measurement configuration parameters in the measurement configuration message to obtain a measurement report. The measurement report carries the measurement information of the master cell group and the auxiliary cell group.
In step 206, the terminal transmits a measurement report to the source base station.
In step 208, the source base station determines a target primary cell from the master cell group according to the measurement information of the master cell group.
In step 210, the source base station sends a handover request to a first target base station corresponding to the target primary cell to request the first target base station to allocate radio resources of the target primary cell to the terminal.
Besides the measurement information of the secondary Cell group, the handover request may also carry information such as an Identifier of the target primary Cell, a Cell-Radio Network Temporary Identifier (C-RNTI) of the terminal in the current access Cell, and the like.
In step 212, the first target base station sends a response message to the source base station that allows the terminal to access the target primary cell.
For example, after receiving the handover request, if the terminal is allowed to access the target primary cell, the first target base station may allocate radio resources of the target primary cell to the terminal, and send a response message carrying information such as C-RNTI of the terminal in the target primary cell to the source base station.
In some embodiments, after receiving the response message, the source base station establishes a logical link with the first target base station, and the source base station may transmit the buffered user data associated with the terminal to the first target base station through the logical link.
In step 214, the first target base station sends an RRC reconfiguration message carrying Mobility Control Information (Mobility Control Information) to the terminal.
The handover control information in the RRC reconfiguration message may include parameters, such as an identifier of the target primary cell, a frequency point, and a C-RNTI of the target primary cell allocated by the first target base station to the terminal, so as to instruct the terminal to Access the target primary cell in a Random Access Channel (RACH) manner.
In step 216, the terminal performs an RRC process corresponding to the RRC reconfiguration message.
In step 218, the terminal searches for a target primary cell and initiates a request for accessing the target primary cell in the manner of RACH to access the target primary cell.
In step 220, the first target base station determines a target secondary cell from the secondary cell group according to the measurement information of the secondary cell group.
In step 222, after the terminal accesses the target primary cell, the first target base station sends an addition request for accessing the target secondary cell to the second target base station corresponding to the target secondary cell, so as to request the second target base station to allocate the radio resource of the target secondary cell to the terminal.
The Addition Request may be an auxiliary node Addition Request (SgNB Addition Request) carrying Radio Bearer configuration information such as an Evolved Radio Access Bearer (E-RAB) parameter.
In step 224, the second target base station sends a response message to the first target base station to allow the terminal to access the target secondary cell.
For example, after receiving the handover request, if the terminal is allowed to access the target secondary cell, the second target base station may allocate Radio resources of the target secondary cell to the terminal, and send a New Radio (NR) RRC reconfiguration message as a response message to the first target base station. The NR RRC reconfiguration message may carry information such as the C-RNTI of the target secondary cell allocated by the second target base station to the terminal.
In step 226, the first target base station sends an RRC reconfiguration message to the terminal to enable the terminal to access the target secondary cell.
For example, the first target base station may encapsulate the NR RRC reconfiguration message from the second target base station into a Long Term Evolution (LTE) RRC reconfiguration message, and send the LTE RRC reconfiguration message to the terminal, so as to instruct the terminal to access the target secondary cell in the RACH manner.
In step 228, the terminal performs an RRC process corresponding to the RRC reconfiguration message.
In step 230, the terminal searches for the target secondary cell and initiates a request for accessing the target secondary cell in the RACH manner to access the target secondary cell.
Fig. 3 is a schematic structural diagram of a cell switching apparatus according to some embodiments of the present disclosure.
As shown in fig. 3, the cell switching apparatus 300 includes a receiving module 301, a determining module 302 and a transmitting module 303.
The receiving module 301 is configured to receive a measurement report sent by a terminal. Here, the measurement report includes measurement information of a plurality of neighbor cells of a cell to which the terminal is currently accessing, and the plurality of neighbor cells include a master cell group and a secondary cell group.
The determination module 302 is configured to determine a target primary cell from the group of primary cells based on measurement information of the group of primary cells.
The sending module 303 is configured to send a handover request for enabling the terminal to access the target primary cell to the first target base station of the NSA corresponding to the target primary cell, so that the first target base station determines the target secondary cell from the secondary cell group according to the measurement information of the secondary cell group carried in the handover request, and enables the terminal to access the target secondary cell after the terminal accesses the target primary cell.
It should be understood that the cell switching apparatus 300 may further include various other modules to perform the operations performed by the source base station in any of the above embodiments.
Fig. 4 is a schematic structural diagram of a cell switching apparatus according to other embodiments of the present disclosure.
As shown in fig. 4, the cell switching apparatus 400 includes a memory 401 and a processor 402 coupled to the memory 401, wherein the processor 402 is configured to execute the cell switching method according to any of the above embodiments based on instructions stored in the memory 401.
The memory 401 may include, for example, a system memory, a fixed non-volatile storage medium, and the like. The system memory may store, for example, an operating system, application programs, a Boot Loader (Boot Loader), and other programs.
The cell switching apparatus 400 may further include an input output interface 403, a network interface 404, a storage interface 405, and the like. The interfaces 403, 404, 405 and the memory 401 and the processor 402 may be connected by a bus 406, for example. The input/output interface 403 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 404 provides a connection interface for various networking devices. The storage interface 405 provides a connection interface for external storage devices such as an SD card and a usb disk.
The embodiment of the present disclosure further provides a base station of an SA, where the base station includes the cell switching apparatus of any of the above embodiments, for example, the cell switching apparatus 300/400.
Fig. 5 is a schematic structural diagram of a communication system according to some embodiments of the present disclosure.
As shown in fig. 5, the communication system includes a base station 501 of the SA of any of the above embodiments (e.g., a base station of the SA including the cell switching device 300/400), and a first target base station 502 of the NSA of any of the above embodiments.
The first target base station 502 is configured to determine a target secondary cell from the secondary cell group according to the measurement information of the secondary cell group carried in the handover request from the base station 501; and after the terminal is accessed into the target primary cell, the terminal is accessed into the target secondary cell.
In some embodiments, the communication system further comprises a second target base station of the NSA corresponding to the target secondary cell, not shown.
The second target base station may be configured to receive an add request from the first target base station 502; sending a response message to the first target base station 502, which allows the terminal to access the target secondary cell, so that the first target base station 502 sends an RRC reconfiguration message to the terminal, which allows the terminal to access the target secondary cell.
In some embodiments, the communication system further comprises a terminal, not shown. The terminal may be configured to perform the operations performed by the terminal in any of the embodiments described above.
The disclosed embodiments also provide a computer-readable storage medium, which includes computer program instructions, and the computer program instructions, when executed by a processor, implement the cell handover method of any one of the above embodiments.
The embodiments of the present disclosure also provide a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for cell handover according to any of the above embodiments is implemented.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other. The embodiments of the cell switching apparatus, the base station, and the communication system correspond to the embodiments of the cell switching method basically, so the description is relatively simple, and the relevant points can be referred to the partial description of the embodiments of the method.
As will be appreciated by one skilled in the art, 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 non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that the functions specified in one or more of the flows in the flowcharts and/or one or more of the blocks in the block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (12)
1. A cell handover method, comprising:
a source base station of an independent network receives a measurement report sent by a terminal, wherein the measurement report comprises measurement information of a plurality of adjacent cells of a cell to which the terminal is currently accessed, and the plurality of adjacent cells comprise a main cell group and an auxiliary cell group;
the source base station determines a target main cell from the main cell group according to the measurement information of the main cell group;
and the source base station sends a switching request for enabling the terminal to be accessed to the target main cell to a first target base station of a non-independent network corresponding to the target main cell, so that the first target base station determines a target auxiliary cell from the auxiliary cell group according to the measurement information of the auxiliary cell group carried in the switching request, and enables the terminal to be accessed to the target auxiliary cell after the terminal is accessed to the target main cell.
2. The method of claim 1, further comprising:
and the source base station sends a measurement configuration message to the terminal so as to indicate the terminal to measure the signals of the plurality of adjacent cells to obtain the measurement report.
3. The method of claim 1, wherein the first target base station determines the target secondary cell from the set of secondary cells before the terminal accesses the target primary cell.
4. The method of claim 1, wherein causing the terminal to access the target secondary cell after the terminal accesses the target primary cell comprises:
the first target base station sends an adding request to a second target base station of the non-independent networking corresponding to the target secondary cell;
the first target base station receives a response message that the second target base station allows the terminal to access the target secondary cell;
and the first target base station sends a radio resource control reconfiguration message for enabling the terminal to access the target secondary cell to the terminal.
5. A cell switching apparatus, comprising:
a receiving module, configured to receive a measurement report sent by a terminal, where the measurement report includes measurement information of multiple neighboring cells of a cell to which the terminal is currently accessed, and the multiple neighboring cells include a master cell group and a secondary cell group;
a determining module configured to determine a target primary cell from the group of primary cells according to measurement information of the group of primary cells;
a sending module, configured to send a handover request for enabling the terminal to access the target primary cell to a first target base station of a non-independent network corresponding to the target primary cell, so that the first target base station determines a target secondary cell from the secondary cell group according to measurement information of the secondary cell group carried in the handover request, and enables the terminal to access the target secondary cell after the terminal accesses the target primary cell.
6. A cell switching apparatus, comprising:
a memory; and
a processor coupled to the memory and configured to perform the cell handover method of claim 1 or 2 based on instructions stored in the memory.
7. An independently networked base station, comprising:
the cell switching apparatus of claim 5 or 6.
8. A communication system, comprising:
the independently networked base station of claim 7; and
the first target base station is configured to determine a target secondary cell from the secondary cell group according to the measurement information of the secondary cell group carried in the handover request; and after the terminal is accessed into the target primary cell, enabling the terminal to be accessed into the target secondary cell.
9. The system of claim 8, further comprising:
a second target base station of a non-independent networking configured to receive an addition request from the first target base station; sending a response message allowing the terminal to access the target secondary cell to the first target base station, so that the first target base station sends a radio resource control reconfiguration message enabling the terminal to access the target secondary cell to the terminal.
10. The system of claim 8 or 9, further comprising:
the terminal is provided.
11. A computer readable storage medium comprising computer program instructions, wherein the computer program instructions, when executed by a processor, implement the cell handover method of any one of claims 1-4.
12. A computer program product comprising a computer program, wherein the computer program when executed by a processor implements the cell handover method of any one of claims 1-4.
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