CN107548109B - Cell switching method and device - Google Patents
Cell switching method and device Download PDFInfo
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- CN107548109B CN107548109B CN201610491092.7A CN201610491092A CN107548109B CN 107548109 B CN107548109 B CN 107548109B CN 201610491092 A CN201610491092 A CN 201610491092A CN 107548109 B CN107548109 B CN 107548109B
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Abstract
The embodiment of the application provides a cell switching method, which comprises the following steps: acquiring a measurement report reported by User Equipment (UE); determining a target cell according to the measurement report, and determining a current service cell of the UE; judging whether the pilot frequency value of the target cell exists in the measurement report or not; if not, the UE is switched from the serving cell to the target cell; if yes, obtaining a received signal strength value of the target cell; judging whether the difference value of the penalty value of the preset target cell subtracted from the received signal strength value is greater than or equal to a preset target cell cut-in threshold or not; and if so, switching the UE from the serving cell to the target cell. In the embodiment of the application, when the adjacent cell is the event cell, the UE is not directly switched to the event cell, but the judgment condition is set to judge whether the switching is needed, so that the frequent switching of the UE is avoided, the switching processing burden of an RNC system is reduced, and the user perception is improved.
Description
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a cell switching method and a cell switching apparatus.
Background
In a cell handover, if the target cell and the serving cell belong to the same RNC (Radio network controller), the handover is called an intra-RNC handover.
In the existing inter-RNC handover method, an RNC issues Measurement Control information (Measurement Control) to configure a UE (User Equipment) to perform Measurement of a corresponding neighboring cell (including a serving cell), where the Measurement Control information includes: triggering conditions for measurement reporting. And when the UE finds that the measurement reporting condition is met, reporting the result to the RNC through a measurement report (MeasurementReport).
If the neighbor cell in the measurement report is an event cell (i.e. the optimal cell in the neighbor cell list), the RNC does not judge the handover threshold and directly triggers handover; in the switching process of an external field (commercial public network), the switching mode can cause frequent switching of the UE, and a ping-pong switching scenario occurs. Frequent handovers of UEs can increase the RNC system processing burden and impact user perception.
Disclosure of Invention
In view of the above problems, embodiments of the present application are proposed to provide a cell switching method and a corresponding cell switching apparatus that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present application discloses a cell handover method, including:
acquiring a measurement report reported by User Equipment (UE);
determining a target cell according to the measurement report, and determining a current service cell of the UE;
judging whether the pilot frequency value of the target cell exists in the measurement report or not;
if not, the UE is switched from the serving cell to the target cell;
if yes, obtaining a received signal strength value of the target cell;
judging whether the difference value of the penalty value of the preset target cell subtracted from the received signal strength value is greater than or equal to a preset target cell cut-in threshold or not;
and if so, switching the UE from the serving cell to the target cell.
Preferably, the method further comprises the following steps:
after the switching is completed, increasing a penalty value corresponding to the service cell, and starting a penalty timer aiming at the service cell;
before the penalty timer is overtime, saving a penalty value corresponding to the service cell;
and after the penalty timer is overtime, clearing the penalty value corresponding to the service cell.
Preferably, the method further comprises the following steps:
and when the UE is switched back to the serving cell from other cells and is switched out from the serving cell again before the penalty timer corresponding to the serving cell is overtime, increasing the penalty value corresponding to the serving cell and restarting the penalty timer corresponding to the serving cell.
Preferably, the step of increasing the penalty value corresponding to the serving cell includes:
and when the penalty value corresponding to the service cell is greater than a preset maximum penalty value, setting the penalty value of the service cell as the preset maximum penalty value.
Preferably, the method further comprises the following steps:
if the serving cell and the target cell in the current switching process belong to different signaling boards, terminating a penalty timer which belongs to the first signaling board and corresponds to the cell which is not overtime, and resetting a corresponding penalty value; the first signaling board is a signaling board to which the serving cell of the current switching process belongs; the non-overtime cell is a serving cell of a handover process before the UE and provided with a non-overtime penalty timer.
Preferably, the measurement report further includes: 1G/2A measurement event; the step of determining a target cell from the measurement report comprises:
extracting the 1G/2A measurement event from the measurement report;
extracting event cells from the 1G/2A measurement events;
and taking the event cell as a target cell.
Simultaneously, this application still discloses a district auto-change over device, includes:
a measurement report acquisition module, configured to acquire a measurement report reported by user equipment UE;
a cell determining module, configured to determine a target cell according to the measurement report, and determine a current serving cell of the UE;
a first judging module, configured to judge whether a pilot value of the target cell exists in a measurement report;
a first handover module, configured to, if there is no pilot value of the target cell in a measurement report, switch the UE from the serving cell to the target cell;
a received signal strength value obtaining module, configured to obtain a received signal strength value of the target cell if a measurement report includes a pilot value of the target cell;
the second judgment module is used for judging whether the difference value of the penalty value of the preset target cell subtracted from the received signal strength value is greater than or equal to a preset target cell cut-in threshold or not;
and the second switching module is configured to switch the UE from the serving cell to the target cell if a difference between the predetermined penalty values of the target cell subtracted from the received signal strength value is greater than a predetermined target cell cut-in threshold.
Preferably, the method further comprises the following steps:
the first punishment module is used for increasing the punishment value corresponding to the service cell and starting a punishment timer aiming at the service cell after the switching is finished;
a saving module, configured to save a penalty value corresponding to the serving cell before the penalty timer expires;
and the zero clearing module is used for clearing the penalty value corresponding to the service cell after the penalty timer is overtime.
Preferably, the method further comprises the following steps:
and the second punishment module is used for increasing the punishment value corresponding to the service cell and restarting the punishment timer corresponding to the service cell when the UE is switched back to the service cell from other cells and is switched out from the service cell again before the punishment timer corresponding to the service cell is overtime.
Preferably, the first penalty module further comprises:
and the maximum penalty value setting submodule is used for setting the penalty value of the service cell as the preset maximum penalty value when the penalty value corresponding to the service cell is greater than the preset maximum penalty value.
Preferably, the method further comprises the following steps:
a termination module, configured to terminate a penalty timer, which belongs to the first signaling board and corresponds to a cell that is not timed out, and clear a corresponding penalty value if a serving cell and a target cell in a current handover process belong to different signaling boards; the first signaling board is a signaling board to which the serving cell of the current switching process belongs; the non-overtime cell is a serving cell of a handover process before the UE and provided with a non-overtime penalty timer.
Preferably, the measurement report further includes: 1G/2A measurement event; the cell determination module further comprises:
a first extraction submodule for extracting the 1G/2A measurement event from the measurement report;
a second extraction submodule, configured to extract an event cell from the 1G/2A measurement event;
and the target cell determining submodule is used for taking the event cell as a target cell.
The embodiment of the application has the following advantages:
in the embodiment of the application, when the adjacent cell is the event cell, whether the pilot frequency value of the event cell exists in the measurement report is judged firstly, and if not, the pilot frequency value of the event cell is judged; the UE is handed over to the event cell. If yes, further judging whether the received signal strength value of the event cell minus the corresponding penalty value meets a cut-in threshold, and if yes, switching the UE to the event cell. In the embodiment of the application, when the adjacent cell is the event cell, the UE is not directly switched to the event cell, but the judgment condition is set to judge whether the switching is needed, so that the frequent switching of the UE is avoided, the switching processing burden of an RNC system is reduced, and the user perception is improved.
Drawings
Fig. 1 is a flowchart illustrating steps of a cell handover method according to embodiment 1 of the present application;
fig. 2 is a flowchart of steps of an embodiment 2 of a cell handover method according to the present application;
fig. 3 is a block diagram of an embodiment of a cell switching apparatus according to the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
One of the core concepts of the embodiments of the present application is to determine whether there is a pilot value of an event cell in a measurement report when a neighboring cell is the event cell, and switch the UE to the event cell if there is no pilot value. If yes, further judging whether the received signal strength value of the event cell minus the corresponding penalty value meets a cut-in threshold, if yes, switching the UE to the event cell
Referring to fig. 1, a flowchart of a step of embodiment 1 of a cell handover method according to the present application is shown, which may specifically include the following steps:
RNC sends down Measurement Control information (Measurement Control) to configure UE to measure corresponding neighboring cells (including service cells), wherein the Measurement Control information is as follows: including the triggering conditions for measurement reporting, and the measurement events that need to be performed. When the UE finds that the Measurement Report conditions are met, reporting the corresponding Measurement result to the RNC through a Measurement Report (Measurement Report).
the measurement report includes information of each measurement event of the current serving cell and the neighboring cell of the UE, and the RNC may use the event cell as a target cell according to the information of the measurement event.
103, judging whether a measurement report has a pilot frequency value of the target cell;
the pilot value is specifically PCCPCH-RSCP (Primary Common Control Physical channel-Received Signal Code Power). RSCP is the received power for a certain code channel. PCCPCH-RSCP refers to the received signal code power for the primary common control physical channel PCCPCH.
in an external field (commercial public network), sometimes, a situation that the UE does not report the RSCP of the event cell occurs, so that although the RSCP of the event cell is strong and the RSCP of the resident serving cell is weak, handover cannot be triggered, and user perception is affected. Therefore, when the pilot frequency value of the target cell is not received, the UE can be directly tangent to the target cell without the reported pilot frequency value.
and if the pilot frequency value of the target cell exists in the check report, acquiring the received signal strength value of the target cell from the measurement report.
Specifically, if the cell is a TD-SCDMA (Time Division-Synchronous Code Division multiple Access) cell, PCCPCH-RSCP is used as the received signal strength value. PCCPCH-RSCP refers to the received signal code power for the primary common control physical channel PCCPCH.
If the cell is a GSM (Global System for Mobile communication) cell, RSSI (Received Signal Strength Indication) is used as the Received Signal Strength value. The RSSI represents the sum of all signal powers received by the UE at a certain frequency point in a certain time slot, and the RSSI cannot distinguish the signal power of the local cell from the signal power of other cells.
in the embodiment of the present application, in the RNC system, a penalty value is set for each cell. When judging whether to cut into the cell, the RNC system subtracts the received signal strength value of the cell, judges whether the obtained difference value is more than or equal to the cut-in threshold corresponding to the cell, and if so, the UE is cut into the cell from the original service cell.
And if the threshold is smaller than the cell switching-in threshold, not switching.
In the embodiment of the present application, when the neighboring cell is the event cell, the neighboring cell that is the event cell is taken as the target cell. Firstly, judging whether a pilot frequency value of a target cell exists in a measurement report; and if not, switching the UE to the target cell. If yes, whether the received signal strength value of the target cell minus the corresponding penalty value meets a cut-in threshold is further judged, and if yes, the UE is switched to the target cell. Whether switching needs to be carried out is judged through setting up the judgment condition in the embodiment of the application, UE frequent switching is avoided, a scene of table tennis switching is avoided, switching processing burden of an RNC system is reduced, and user perception is improved.
Referring to fig. 2, a flowchart of a step of embodiment 2 of a cell handover method according to the present application is shown, which may specifically include the following steps:
as a preferred example of the embodiment of the present application, the measurement report further includes: 1G/2A measurement event; the step of determining the target cell according to the measurement report may specifically include the following sub-steps:
a substep S11 of extracting the 1G/2A measurement event from the measurement report;
1G is a cell-oriented co-frequency measurement algorithm, which indicates that a TDD (Time Division duplex) best cell changes. 2A is a cell-oriented non-coverage based inter-frequency measurement algorithm, indicating that the best frequency changes.
And when the UE detects that the adjacent cell is superior to the service cell, reporting the 1G/2A measurement event. The 1G/2A measurement event records the measurement results of each neighboring cell of the neighboring cells.
Substep S12, extracting an event cell from the 1G/2A measurement event;
the event cell is a cell with an optimal measurement result in the adjacent cell;
and a substep S13 of setting the event cell as a target cell.
The event cell is used as a target cell which can be switched into.
in the RNC system, the penalty value for the serving cell as the handover cell is increased each time a handover is completed. And a penalty timer is started for the serving cell.
Specifically, a penalty step is set in the RNC, and a penalty step is added to the penalty value every time handover is completed. The penalty step length can be 1-15 dB; preferably, 3dB is used as the default penalty step. The value range of the timing duration of the penalty timer can be 0-65535 s; preferably, 300s is used as the default timing duration.
As a preferred example of the embodiment of the present application, the step 208 may specifically include the following sub-steps:
and a substep S21, setting the penalty value of the serving cell to be the preset maximum penalty value when the penalty value corresponding to the serving cell is greater than the preset maximum penalty value.
And after the penalty value is increased, the penalty value exceeds a preset maximum penalty value, and the maximum penalty value is used as a penalty value corresponding to the cell.
Specifically, the value range of the maximum penalty value can be 1-60 dB; preferably, 30dB is used as the maximum penalty value.
And step 209, before the penalty timer is overtime, saving a penalty value corresponding to the serving cell.
Before the timer is overtime, the punishment value of the corresponding service cell is kept effective.
and when the penalty timer reaches the corresponding overtime, resetting the penalty value corresponding to the cell, and setting the initial penalty value of the cell as 0.
For each UE, the RNC needs to maintain ping-pong handover penalty values and ping-pong handover penalty timers for the serving cell and each neighbor cell, the initial ping-pong handover penalty value is 0, and the maintenance of the parameters of the serving cell is because a situation in which a switch-out cut-in occurs repeatedly before the timer times out may occur. In addition, if the cell that was previously switched out is not a neighbor cell of the current serving cell, but the ping-pong handover penalty timer is still valid, the ping-pong handover penalty value and the ping-pong handover penalty timer of the cell still need to be saved
In a preferred example of the embodiment of the present application, the method may further include the following steps:
and when the UE is switched back to the serving cell from other cells and is switched out from the serving cell again before the penalty timer corresponding to the serving cell is overtime, increasing the penalty value corresponding to the serving cell and restarting the penalty timer corresponding to the serving cell. And if the penalty value exceeds the preset maximum penalty value after the penalty value is increased, taking the maximum penalty value as the penalty value corresponding to the cell.
In order to enable a person skilled in the art to better understand the embodiments of the present invention, the following description is given by way of an example:
suppose that the cells ABC are adjacent cells, and the punishment step length set by the RNC is S.
Cell a is the initial serving cell for the UE. In an initial state, the penalty value Qa corresponding to the cell A is 0; the penalty value Qb corresponding to the cell B is 0; the penalty value corresponding to cell C is Qc 0; closing a penalty timer Ta corresponding to the cell A; closing a punishment timer Tb corresponding to the cell B; the penalty timer Tc corresponding to cell C is closed.
The UE is handed over from cell a to cell B. At this time, the penalty value Qa corresponding to the cell a is S; the penalty value Qb corresponding to the cell B is 0; the penalty value Qc corresponding to the cell C is 0; starting a penalty timer Ta corresponding to the cell A; closing a punishment timer Tb corresponding to the cell B; the penalty timer Tc corresponding to cell C is closed.
Before Ta times out, the UE is handed back from cell B to cell a. At this time, the penalty value Qa corresponding to the cell a is S; the penalty value Qb corresponding to the cell B is S; the penalty value Qc corresponding to the cell C is 0; starting a penalty timer Ta corresponding to the cell A; starting a penalty timer Tb corresponding to the cell B; the penalty timer Tc corresponding to cell C is closed.
Before Ta times out, the UE is handed over from cell a to cell C. At this time, the penalty value Qa corresponding to the cell a is 2S; the penalty value Qb corresponding to the cell B is S; the penalty value Qc corresponding to the cell C is 0; restarting a penalty timer Ta corresponding to the cell A; starting a penalty timer Tb corresponding to the cell B; the penalty timer Tc corresponding to cell C is closed.
If Ta is overtime, the penalty value Qa corresponding to the cell A is 0; the penalty value Qb corresponding to the cell B is S; the penalty value Qc corresponding to the cell C is 0; closing a penalty timer Ta corresponding to the cell A; starting a penalty timer Tb corresponding to the cell B; the penalty timer Tc corresponding to cell C is closed.
In a preferred example of the embodiment of the present application, the method may further include the following steps:
if the serving cell and the target cell in the current switching process belong to different signaling boards, terminating a penalty timer which belongs to the first signaling board and corresponds to the cell which is not overtime, and resetting a corresponding penalty value; the first signaling board is a signaling board to which the serving cell of the current switching process belongs; the non-overtime cell is a serving cell of a handover process before the UE and provided with a non-overtime penalty timer.
For example, first, a first handover is performed, and the UE is handed over from the cell a belonging to the service board a to the cell B belonging to the service board a; after the handover is completed, the penalty value Qa for the cell a is increased, and a penalty timer Ta for the cell a is started.
Then, switching for the second time, and switching the UE from the cell B belonging to the service board A to the cell C belonging to the service board C; after the handover is completed, the penalty value Qb for the cell B is increased, and a penalty timer Tb for the cell B is started.
The second handover process is the current handover process, and the current handover belongs to inter-board handover because the cell C and the cell B belong to different signaling boards. The signaling board a is a signaling board to which a serving cell (cell B) belongs in the current handover process.
When the source plate UE is switched out of a plurality of cells, the cells switched out before and the penalty timer are not overtime possibly, and only the penalty value and the penalty timer of the last time of switching out the cells are saved.
For example, if the penalty timer for the handover out cell (cell a) of the UE's previous handover procedure is not yet expired, i.e., cell a is an unexpired cell. The RNC terminates the penalty timer for cell a and clears the penalty value for cell a.
After the inter-board switching process, the RNC only stores the penalty timer and the corresponding penalty value of the service cell of the UE in the current switching process.
And if the inter-board handover is performed, namely the serving cell and the target cell in the current handover process belong to the same signaling board, keeping the non-overtime penalty timer and the corresponding penalty value of the switched-out cell of each handover of the UE.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the embodiments. Further, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required of the embodiments of the application.
Referring to fig. 3, a block diagram of a cell switching apparatus according to an embodiment of the present application is shown, which may specifically include the following modules:
a measurement report obtaining module 31, configured to obtain a measurement report reported by user equipment UE;
a cell determining module 32, configured to determine a target cell according to the measurement report, and determine a current serving cell of the UE;
a first determining module 33, configured to determine whether a pilot value of the target cell exists in a measurement report;
a first handover module 34, configured to handover the UE from the serving cell to the target cell if there is no pilot value of the target cell in the measurement report;
a received signal strength value obtaining module 35, configured to obtain a received signal strength value of the target cell if a measurement report includes a pilot value of the target cell;
a second determining module 36, configured to determine whether a difference between the preset penalty value of the target cell subtracted from the received signal strength value is greater than or equal to a preset target cell cut-in threshold;
a second switching module 37, configured to switch the UE from the serving cell to the target cell if a difference between the predetermined penalty values of the target cell subtracted from the received signal strength value is greater than a predetermined target cell cut-in threshold.
As a preferred example of the embodiment of the present application, the apparatus may further include:
the first punishment module is used for increasing the punishment value corresponding to the service cell and starting a punishment timer aiming at the service cell after the switching is finished;
a saving module, configured to save a penalty value corresponding to the serving cell before the penalty timer expires;
and the zero clearing module is used for clearing the penalty value corresponding to the service cell after the penalty timer is overtime.
As a preferred example of the embodiment of the present application, the apparatus may further include:
and the second punishment module is used for increasing the punishment value corresponding to the service cell and restarting the punishment timer corresponding to the service cell when the UE is switched back to the service cell from other cells and is switched out from the service cell again before the punishment timer corresponding to the service cell is overtime.
As a preferred example of the embodiment of the present application, the first penalty module further includes:
and the maximum penalty value setting submodule is used for setting the penalty value of the service cell as the preset maximum penalty value when the penalty value corresponding to the service cell is greater than the preset maximum penalty value.
As a preferred example of the embodiment of the present application, the apparatus may further include:
a termination module, configured to terminate a penalty timer, which belongs to the first signaling board and corresponds to a cell that is not timed out, and clear a corresponding penalty value if a serving cell and a target cell in a current handover process belong to different signaling boards; the first signaling board is a signaling board to which the serving cell of the current switching process belongs; the non-overtime cell is a serving cell of a handover process before the UE and provided with a non-overtime penalty timer.
As a preferred example of the embodiment of the present application, the measurement report further includes: 1G/2A measurement event; the cell determination module 32 may further include:
a first extraction submodule for extracting the 1G/2A measurement event from the measurement report;
a second extraction submodule, configured to extract an event cell from the 1G/2A measurement event;
and the target cell determining submodule is used for taking the event cell as a target cell.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or 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 terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, 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 terminal 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 terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above detailed description is provided for a cell switching method and a cell switching apparatus, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the above descriptions of the embodiments are only used to help understand the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A method of cell handover, comprising:
acquiring a measurement report reported by User Equipment (UE);
determining a target cell according to the measurement report, and determining a current service cell of the UE;
judging whether the pilot frequency value of the target cell exists in the measurement report or not;
if not, the UE is switched from the serving cell to the target cell;
if yes, obtaining a received signal strength value of the target cell;
judging whether the difference value of the penalty value of the preset target cell subtracted from the received signal strength value is greater than or equal to a preset target cell cut-in threshold or not;
if so, switching the UE from the serving cell to the target cell;
after the switching is completed, increasing a penalty value corresponding to the service cell, and starting a penalty timer aiming at the service cell;
before the penalty timer is overtime, saving a penalty value corresponding to the service cell;
and after the penalty timer is overtime, clearing the penalty value corresponding to the service cell.
2. The method of claim 1, further comprising:
and when the UE is switched back to the serving cell from other cells and is switched out from the serving cell again before the penalty timer corresponding to the serving cell is overtime, increasing the penalty value corresponding to the serving cell and restarting the penalty timer corresponding to the serving cell.
3. The method according to claim 1 or 2, wherein the step of increasing the penalty value corresponding to the serving cell comprises:
and when the penalty value corresponding to the service cell is greater than a preset maximum penalty value, setting the penalty value of the service cell as the preset maximum penalty value.
4. The method of claim 1, further comprising:
if the serving cell and the target cell in the current switching process belong to different signaling boards, terminating a penalty timer which belongs to the first signaling board and corresponds to the cell which is not overtime, and resetting a corresponding penalty value; the first signaling board is a signaling board to which the serving cell of the current switching process belongs; the non-overtime cell is a serving cell of a handover process before the UE and provided with a non-overtime penalty timer.
5. The method of claim 1, wherein the measurement report further comprises: 1G/2A measurement event; the step of determining a target cell from the measurement report comprises:
extracting the 1G/2A measurement event from the measurement report;
extracting event cells from the 1G/2A measurement events;
and taking the event cell as a target cell.
6. A cell switching apparatus, comprising:
a measurement report acquisition module, configured to acquire a measurement report reported by user equipment UE;
a cell determining module, configured to determine a target cell according to the measurement report, and determine a current serving cell of the UE;
a first judging module, configured to judge whether a pilot value of the target cell exists in a measurement report;
a first handover module, configured to, if there is no pilot value of the target cell in a measurement report, switch the UE from the serving cell to the target cell;
a received signal strength value obtaining module, configured to obtain a received signal strength value of the target cell if a measurement report includes a pilot value of the target cell;
the second judgment module is used for judging whether the difference value of the penalty value of the preset target cell subtracted from the received signal strength value is greater than or equal to a preset target cell cut-in threshold or not;
a second switching module, configured to switch the UE from the serving cell to the target cell if a difference between the predetermined penalty values of the target cell subtracted from the received signal strength value is greater than a predetermined target cell cut-in threshold;
the first punishment module is used for increasing the punishment value corresponding to the service cell and starting a punishment timer aiming at the service cell after the switching is finished;
a saving module, configured to save a penalty value corresponding to the serving cell before the penalty timer expires;
and the zero clearing module is used for clearing the penalty value corresponding to the service cell after the penalty timer is overtime.
7. The apparatus of claim 6, further comprising:
and the second punishment module is used for increasing the punishment value corresponding to the service cell and restarting the punishment timer corresponding to the service cell when the UE is switched back to the service cell from other cells and is switched out from the service cell again before the punishment timer corresponding to the service cell is overtime.
8. The apparatus of claim 6 or 7, wherein the first penalty module further comprises:
and the maximum penalty value setting submodule is used for setting the penalty value of the service cell as the preset maximum penalty value when the penalty value corresponding to the service cell is greater than the preset maximum penalty value.
9. The apparatus of claim 6, further comprising:
a termination module, configured to terminate a penalty timer, which belongs to the first signaling board and corresponds to a cell that is not timed out, and clear a corresponding penalty value if a serving cell and a target cell in a current handover process belong to different signaling boards; the first signaling board is a signaling board to which the serving cell of the current switching process belongs; the non-overtime cell is a serving cell of a handover process before the UE and provided with a non-overtime penalty timer.
10. The apparatus of claim 6, wherein the measurement report further comprises: 1G/2A measurement event; the cell determination module further comprises:
a first extraction submodule for extracting the 1G/2A measurement event from the measurement report;
a second extraction submodule, configured to extract an event cell from the 1G/2A measurement event;
and the target cell determining submodule is used for taking the event cell as a target cell.
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