CN114339909A - Cell switching method, device and computer readable storage medium - Google Patents
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Abstract
The invention discloses a cell switching method, a device and a computer readable storage medium, wherein the method comprises the following steps: when receiving the reconfiguration message, determining a cell switching type according to the reconfiguration message; and when the cell switching type is intra-cell switching, keeping the mobility measurement configuration parameters unchanged. Therefore, when the cell switching type is determined to be intra-cell switching, by keeping the mobility measurement configuration parameters unchanged, the measurement interruption during the intra-cell switching can be avoided, the switching delay of the intra-cell switching is reduced, and the overhead of air interface configuration and measurement report signaling during the intra-cell switching is reduced.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a cell switching method, an apparatus, and a computer-readable storage medium.
Background
When a terminal device resides in an LTE (Long Term Evolution) network and enters a connection mode, it receives mobility management-related configuration through a reconfiguration message issued by the network, and obtains neighboring cell information and a measurement reporting rule. The network may perform mobility management on the terminal device according to the measurement report reported by the terminal device, for example, may instruct the terminal device to switch to a suitable target cell.
Generally, cell handover can be divided into inter-cell handover and intra-cell handover according to whether a primary cell is changed. When a cell is switched to an inter-cell handover, the neighboring cell configured by a source cell and a measurement reporting rule are usually changed, so that the current protocol requires that terminal equipment automatically arrange mobility measurement configuration in the switching process, and when the cell is switched to an intra-cell handover, the processing mode is the same as the inter-cell handover, thereby causing the waste of air interface signaling resources and the interruption of a normal measurement flow.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide a cell handover method, which can avoid measurement interruption during an intra-cell handover, reduce handover delay of the intra-cell handover, and reduce overhead of air interface configuration and measurement report signaling during the intra-cell handover by keeping a mobility measurement configuration parameter unchanged when it is determined that a cell handover type is the intra-cell handover.
A second object of the invention is to propose a computer-readable storage medium.
A third object of the present invention is to provide a cell switching apparatus.
A fourth object of the present invention is to provide a cell switching apparatus.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a cell handover method, which is applied to a mobile terminal, and the method includes: when receiving the reconfiguration message, determining a cell switching type according to the reconfiguration message; and when the cell switching type is intra-cell switching, keeping the mobility measurement configuration parameters unchanged.
According to the cell switching method provided by the embodiment of the invention, when the reconfiguration message is received, the cell switching type is determined according to the reconfiguration message, and when the cell switching type is determined to be intra-cell switching, the mobility measurement configuration parameters are kept unchanged. Therefore, when the cell switching type is determined to be intra-cell switching, by keeping the mobility measurement configuration parameters unchanged, the measurement interruption during the intra-cell switching can be avoided, the switching delay of the intra-cell switching is reduced, and the overhead of air interface configuration and measurement report signaling during the intra-cell switching is reduced.
According to an embodiment of the present invention, the reconfiguration message includes a source cell mobility measurement configuration parameter, and when the cell handover type is intra-cell handover, the method further includes: and firstly, performing measurement deletion action, and then recovering measurement configuration according to the source cell mobility measurement configuration parameters.
According to one embodiment of the invention, the measuring a delete action comprises: deleting periodic measurements; deleting the measurement evaluation result; stopping the measurement association timer; removing the measurement gap; the inter-frequency and inter-system measurements are suspended.
According to an embodiment of the present invention, a reconfiguration message is used to indicate a cell center frequency and a cell ID of a target cell, and a cell handover type is determined according to the reconfiguration message, including: and when the cell center frequency point and the cell ID of the target cell are the same as those of the source cell, determining that the target cell is switched in the cell.
According to an embodiment of the present invention, the reconfiguration message includes mobility control parameters, and the mobility control parameters include a cell center frequency point and a cell ID of the target cell.
According to an embodiment of the present invention, when the cell handover type is inter-cell handover, the measurement deletion operation is performed first, and then the mobility measurement configuration parameters are reconfigured.
According to one embodiment of the invention, the security key is updated by an intra-cell handover.
To achieve the above object, a second embodiment of the present invention provides a computer-readable storage medium, on which a cell handover program is stored, where the cell handover program, when executed by a processor, implements the cell handover method as in the first embodiment.
According to the computer-readable storage medium of the embodiment of the present invention, by using the cell handover method, when it is determined that the cell handover type is intra-cell handover, measurement interruption during intra-cell handover can be avoided, handover delay of intra-cell handover can be reduced, and overhead of air interface configuration and measurement report signaling during intra-cell handover can be reduced by keeping the mobility measurement configuration parameter unchanged.
In order to achieve the above object, a third embodiment of the present invention provides a cell switching apparatus, which includes a memory, a processor, and a cell switching program stored in the memory and executable on the processor, wherein the processor executes the cell switching program to implement the cell switching method according to the first embodiment.
According to the cell switching device in the embodiment of the present invention, by using the cell switching method, when it is determined that the cell switching type is intra-cell switching, measurement interruption during intra-cell switching can be avoided, switching delay of intra-cell switching can be reduced, and overhead of air interface configuration and measurement report signaling during intra-cell switching can be reduced by keeping the mobility measurement configuration parameters unchanged.
In order to achieve the above object, a fourth aspect of the present invention provides a cell switching apparatus, which is applied to a mobile terminal, and includes: the receiving module is used for receiving the reconfiguration message sent by the network side; a determining module, configured to determine a cell switching type according to the reconfiguration message; and the switching module is used for keeping the mobility measurement configuration parameters unchanged when the cell switching type is intra-cell switching.
According to the cell switching device provided by the embodiment of the invention, the receiving module is used for receiving the reconfiguration message sent by the network side, the determining module is used for determining the cell switching type according to the reconfiguration message, and when the cell switching type is intra-cell switching, the switching module is used for keeping the mobility measurement configuration parameters unchanged. Therefore, when the cell switching type is determined to be intra-cell switching, by keeping the mobility measurement configuration parameters unchanged, the measurement interruption during the intra-cell switching can be avoided, the switching delay of the intra-cell switching is reduced, and the overhead of air interface configuration and measurement report signaling during the intra-cell switching is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
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Fig. 1 is a flowchart of a cell handover method according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating the impact of an intra-cell handover multiplexing inter-cell handover procedure on measurement according to an embodiment of the present invention;
fig. 3 is a flowchart of a cell handover method according to another embodiment of the present invention;
FIG. 4 is a flow chart of a method of cell handover according to yet another embodiment of the present invention;
fig. 5 is a diagram illustrating a handover procedure of inter-cell handover and intra-cell handover in a specific example;
fig. 6 is a schematic structural diagram of a cell switching apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A cell handover method, an apparatus, and a computer-readable storage medium according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a cell handover method according to an embodiment of the present invention. As shown in fig. 1, the cell switching method includes the following steps:
step S101, when receiving the reconfiguration message, determining the cell switching type according to the reconfiguration message.
Specifically, when the terminal device resides in the LTE network and is in the connected mode, the network may send a reconfiguration message to the terminal device in the connected state through RRC (Radio Resource Control) signaling, where the reconfiguration message includes a cell handover command. The terminal equipment receives reconfiguration information sent by a network, and determines a cell switching type according to a cell switching command when the received reconfiguration information is determined to include the cell switching command.
In some embodiments, the reconfiguration message is used to indicate a cell center frequency point and a cell ID of the target cell, and the determining the cell handover type according to the reconfiguration message includes: and when the cell center frequency point and the cell ID of the target cell are the same as those of the source cell, determining that the target cell is switched in the cell.
Further, the reconfiguration message includes a mobility control parameter, and the mobility control parameter includes a cell center frequency point and a cell ID of the target cell.
Specifically, the cell handover command may include a mobility control parameter, and the terminal device may determine information of a target cell (i.e., a target primary cell) according to the mobility control parameter, where the information includes a cell center frequency point and a cell ID of the target cell. It should be noted that the cell center frequency point and the cell ID are basic configurations of a cell, for example, a carrier frequency point number corresponding to the cell center frequency point may be 0 to 65535, and the cell ID may be different cells on a physical layer. In the present application, it is assumed that there are currently 504 cell IDs, which are divided into 168 different groups ranging from 0 to 167, each group comprising 3 different intra-group identities ranging from 0 to 2.
When the terminal equipment obtains the cell center frequency point and the cell ID of the target cell, whether the cell center frequency point of the target cell is the same as the cell center frequency point of the source cell (namely, the source main cell, namely, the current main cell) can be checked, whether the cell ID of the target cell is the same as the cell ID of the source cell is checked, if the cell center frequency point of the target cell is the same as the cell center frequency point of the source cell and the cell ID of the target cell is the same as the cell ID of the source cell, the source cell does not need to be replaced in the cell switching process, and at the moment, the cell switching type is determined to be intra-cell switching; otherwise, determining the cell switching type as inter-cell switching. Therefore, the cell switching type can be determined quickly and accurately according to the comparison result by comparing the mobility control parameters in the reconfiguration message, such as the cell center frequency point and the cell ID of the target cell, with the source cell.
Step S102, when the cell switching type is intra-cell switching, keeping the mobility measurement configuration parameters unchanged.
Specifically, when the terminal device determines that the cell handover type is intra-cell handover, the terminal device switches to an intra-cell handover process, and at this time, the terminal device does not reuse the sorting of the mobility measurement configuration in the inter-cell handover process, but skips the sorting of the mobility measurement configuration in the original inter-cell handover process, and keeps the current measurement configuration and the evaluation data unchanged to maintain the continuity and integrity of the mobility measurement process, so that the problems of measurement interruption, measurement report delay, and further handover delay in the cell and overhead of an air interface configuration and a measurement report signaling caused when the mobility measurement configuration is sorted in the inter-cell handover process as shown in fig. 2 can be avoided.
As another example, the reconfiguration message includes a source cell mobility measurement configuration parameter, and when the cell handover type is intra-cell handover, the method further includes: and firstly, performing measurement deletion action, and then recovering measurement configuration according to the source cell mobility measurement configuration parameters. Further, the measuring a deletion action includes: deleting periodic measurements; deleting the measurement evaluation result; stopping the measurement association timer; removing the measurement gap; the inter-frequency and inter-system measurements are suspended.
Specifically, the reconfiguration message may include a cell handover command and a source cell mobility measurement configuration parameter, and after receiving the reconfiguration message, when determining that the cell handover type is intra-cell handover according to the cell handover command, the mobile terminal performs a measurement deletion action first, that is, performs a measurement deletion action when organizing the mobility measurement configuration in the original inter-cell handover process, such as deleting periodic measurement, deleting a measurement evaluation result, stopping a measurement association timer, removing a measurement gap, and suspending inter-frequency and inter-system measurement, and then resumes the measurement configuration according to the source cell mobility measurement configuration parameter, so that the problem of interruption caused by deletion of the measurement gap of the inter-frequency and inter-system in the influence 1 shown in fig. 2 can be avoided without modifying the terminal behavior.
In some embodiments, the security keys are updated by an intra-cell handover.
That is, the purpose of intra-cell handover is mainly to update keys. It should be noted that each RB (Resource Bearer, Bearer between the terminal and the network) maintains an independent counter in each direction, and for DRB (Data RB, Data Bearer between the terminal and the network), the counter is used as an encrypted input; for SRB (Signal RB, signaling bearer between terminal and network), this counter serves as input for ciphering and integrity protection. For a given security key, the value of the same counter can only be used once, and the protocol specifies that the network side is to avoid the same RB and the same KeNB from using the same value of the counter, depending on the network policy, for example, when a large data transmission service is performed, the counter is continuously accumulated, and before the counter overflows, the network can update the key by switching in the cell to avoid key reuse; for another example, when a large data transmission service is performed, the ID of the RB is changed, and when the IDs (for example, the total number of IDs is 32) of the RD are used up, the network may update the password by intra-cell switching, so as to avoid key reuse.
In some embodiments, when the cell handover type is inter-cell handover, the measurement deletion action is performed first, and then the mobility measurement configuration parameters are reconfigured.
Specifically, when the terminal device determines that the cell handover type is inter-cell handover, the terminal device switches to an inter-cell handover procedure, and performs measurement deletion actions, such as deleting periodic measurement, deleting measurement evaluation results, stopping measurement associated timers, removing measurement gaps, and suspending inter-frequency and inter-system measurement, during the inter-cell handover. To recover the mobility measurement configuration before handover, the network needs to reconfigure the measurement, including reconfiguring the periodic measurement and the measurement gap, and perform recovery actions after handover is completed, such as recovering the periodic measurement, recovering the measurement evaluation result, recovering the measurement association timer, increasing the measurement gap, and recovering the inter-frequency and inter-system measurement. Therefore, by automatically arranging the mobility measurement configuration for the inter-cell switching, the signal switching of the mobile terminal among different cells is realized.
Further, as a specific example, as shown in fig. 3, the cell handover method may include the following steps:
step S201, receiving a reconfiguration message with mobility control parameters.
Specifically, when the terminal device camps on the LTE network and is in the connected mode, the network may send a reconfiguration message including mobility control parameters to the terminal device in the connected state through RRC signaling.
Step S202, the handover related configuration is executed according to the existing protocol, as in sections 5.3 and 5.4 of the LTE36.331 protocol.
Step S203, determine whether the cell center frequency point and the cell ID of the target cell in the mobility control parameter are the same as the source cell. If yes, entering a switching process in the cell, keeping the mobility measurement configuration parameters unchanged in the process, namely, directly jumping to the step S206 without performing any operation on the mobility measurement configuration and the measurement evaluation data, and not influencing the measurement behavior at the moment; if not, the inter-cell handover procedure is performed, in which steps S204 and S205 are executed first, and then the process jumps to step S206.
In step S204, a measurement deletion operation is performed.
Specifically, the main cell is replaced during inter-cell handover, and at this time, the neighboring cell configured under the source cell and the measurement reporting rule generally change, so that the terminal device is required to automatically arrange the mobility measurement configuration parameters in the handover process, specifically, the measurement deletion action is performed, such as deleting the periodic measurement and the measurement evaluation result at the terminal side, and stopping the measurement correlation timer, removing the measurement gap, and suspending the inter-frequency and inter-system measurement.
Step S205, the measurement configuration is restored.
Specifically, when it is an inter-cell handover, after the cell handover is completed, the step of recovering the measurement configuration is also performed, such as recovering the periodic measurement, recovering the measurement evaluation result, recovering the measurement association timer, increasing the measurement gap, and recovering the inter-frequency and inter-system measurement. For intra-cell handover, however, steps S204 and S205 need not be performed.
Step S206, the target cell is accessed randomly, and the switching process is completed.
Therefore, by reserving the mobility measurement configuration and the terminal measurement evaluation related data during the intra-cell handover, the overhead of the air interface configuration and the measurement report signaling during the intra-cell handover can be reduced, the measurement is prevented from being interrupted during the intra-cell handover, the measurement report is prevented from being delayed, the intra-cell handover delay is reduced, and the user experience is improved.
As another specific example, as shown in fig. 4, the cell switching method may include the following steps:
step S301, a reconfiguration message is received.
Specifically, when the terminal device resides in the LTE network and is in the connected mode, and cell handover is required, the network may first determine whether the cell handover type is intra-cell handover. If yes, adding the mobility control parameter and the source cell mobility measurement configuration parameter into a reconfiguration message; if not, adding the mobility control parameter into the reconfiguration message, and then sending the reconfiguration message to the terminal equipment in the connection state through RRC signaling.
Step S302, judging whether the cell center frequency point and the cell ID of the target cell in the mobility control parameters are the same as the source cell. If yes, entering a switching process in the cell, and executing steps S303-S304 in the process; if not, the inter-cell handover procedure is entered, in which steps S305-S306 are executed.
In step S303, a measurement deletion operation is performed.
Specifically, when performing intra-cell handover, deleting mobility measurement configuration parameters of the source cell, including deleting periodic measurements and measurement evaluation results of the source cell, stopping a source cell measurement association timer, moving out a source cell measurement gap, and suspending source cell inter-frequency and inter-system measurements.
Step S304, the measurement configuration is recovered according to the source cell mobility measurement configuration parameters in the reconfiguration message.
Specifically, after the handover in the cell is completed, the mobility measurement configuration parameters are recovered according to the source cell mobility measurement configuration parameters in the reconfiguration message.
In step S305, a measurement deletion operation is performed.
Specifically, the main cell is replaced during inter-cell handover, and at this time, the neighbor cell configured under the source cell and the measurement reporting rule generally change, so that the terminal device is required to automatically arrange the mobility measurement configuration during the handover process, and specifically, the measurement deletion action may be performed first, including deleting the periodic measurement and the measurement evaluation result, stopping the measurement association timer, removing the measurement gap, and suspending the inter-frequency and inter-system measurement.
Step S306, the measurement configuration is restored.
Specifically, after the inter-cell handover is completed, the deleted measurement configuration is recovered, including recovering the periodic measurement, recovering the measurement evaluation result, recovering the measurement association timer, increasing the measurement gap, and recovering the inter-frequency and inter-system measurement.
Step S307, the target cell is randomly accessed to complete the switching process.
Therefore, when switching in the cell, the measurement deleting action is firstly carried out, and then the measurement configuration is recovered according to the source cell mobility measurement configuration parameters, so that the interruption problem caused by deleting the measurement gap of the different frequency and different system can be avoided under the condition of not modifying the terminal behavior.
Further, as a specific example, as shown in fig. 5, the handover procedure of inter-cell handover and intra-cell handover may include the following steps:
step S401, performing an identity authentication process, i.e. performing identity authentication between the terminal device and the source cell.
Step S402, AS/NAS safety establishing process, namely establishing safety AS/NAS process between the terminal equipment and the source cell.
Step S403, sending a reconfiguration connection message through RRC signaling between the terminal device and the source cell.
Step S404, the measurement report, that is, the terminal device sends the measurement report to the source cell.
Step S405, switching judgment.
Specifically, the source cell network performs mobility management on the terminal device according to the measurement report reported by the terminal device, and determines whether the cell center frequency point and the cell ID of the target cell in the mobility control parameters are the same as the source cell. If yes, entering a switching process in the cell, keeping the mobility measurement configuration parameters unchanged in the process, namely, directly jumping to the step S406 without performing any operation on the mobility measurement configuration and the measurement evaluation data, and not influencing the measurement behavior at the moment; if not, go to step S409.
Step S406, to change the security key, intra-cell handover is required, that is, intra-cell handover is mainly caused by the need to update the security key, and since the updated security key is completely independent and unrelated to the mobility measurement, the terminal device is always connected to the same cell, and neither the neighboring cell configuration nor the measurement report rule changes.
In step S407, the RRC connection reconfiguration message (intra-cell handover), i.e. the deletion measurement actions of the inter-cell handover, such as deleting the periodic measurement, deleting the measurement evaluation result, stopping the related timer and removing the measurement gap, and resuming the measurement process, need not be reused.
Step S408, perform random access in the same cell, i.e. handover in the source cell, without searching for a new target cell.
Step S409, a switching request is sent, namely, when the cell center frequency point or the cell ID of the target cell in the mobility control parameters is different from the source cell, a cell network switching request is sent.
Step S410, a handover request response, that is, the target cell executes a corresponding handover request response, to prepare for inter-cell handover.
Step S411, RRC connection reconfiguration message (inter-cell handover).
Step S412, disconnecting from the source cell, synchronizing with the target cell, and performing random access, that is, disconnecting from the source cell, and synchronizing with the target cell and performing random access.
Step S413, delete periodic measurement, delete measurement evaluation result, stop related timer, and remove measurement gap.
Specifically, in the inter-cell handover process, the terminal device is required to automatically arrange the mobility measurement configuration parameters, which may specifically be to perform a measurement deletion action, such as deleting the periodic measurement and the measurement evaluation result at the terminal side, and stopping the measurement association timer and removing the measurement gap.
And step S414, carrying out same frequency measurement, namely recovering the same frequency measurement of the terminal equipment.
Step S415, the RRC connection reconfiguration message is completed, that is, the intra-frequency measurement reconfiguration is completed.
Step S416, the terminal device releases, i.e. releases the measurement gap configured on the network side.
Step S417, reconfigure the periodic measurement reconfiguration measurement gap, that is, reconfigure the periodic measurement and reconfigure the measurement gap according to the information sent by the terminal device on the network side of the target cell.
Step S418, the RRC connection reconfiguration message, that is, the target cell feeds back the RRC connection reconfiguration message to the terminal device.
And step S419, recovering the periodic measurement, performing measurement evaluation again, restarting the related timer, revalidating the measurement gap and recovering the inter-frequency and inter-system measurement.
Specifically, after the inter-cell handover is completed, the terminal device recovers the deleted measurement configuration, including recovering the periodic measurement, recovering the measurement evaluation result, recovering the measurement association timer, increasing the measurement gap, and recovering the inter-frequency and inter-system measurement.
Step S420, after the RRC connection reconfiguration message is completed, that is, after the RRC connection reconfiguration message is completed, the terminal device performs random access to the target cell, and completes the handover procedure.
Therefore, by distinguishing different scenes of intra-cell switching and inter-cell switching, for the scene of intra-cell switching, in the process of executing switching, mobility measurement configuration and measurement evaluation data are not cleared, the continuity and the integrity of a mobility measurement process are maintained, the mobility measurement process is prevented from being interrupted by the intra-cell switching unnecessarily, the intra-cell switching efficiency is improved, and unnecessary coupling among the processes is avoided.
In summary, according to the cell handover method of the embodiment of the present invention, when the reconfiguration message is received, the cell handover type is determined according to the reconfiguration message, and when the cell handover type is determined to be intra-cell handover, the mobility measurement configuration parameter is kept unchanged. Therefore, when the cell switching type is determined to be intra-cell switching, by keeping the mobility measurement configuration parameters unchanged, the measurement interruption during the intra-cell switching can be avoided, the switching delay of the intra-cell switching is reduced, and the overhead of air interface configuration and measurement report signaling during the intra-cell switching is reduced.
Embodiments of the present invention also provide a computer-readable storage medium having a cell handover program stored thereon, which when executed by a processor implements the cell handover method as described above.
According to the computer-readable storage medium of the embodiment of the present invention, by using the cell handover method, when it is determined that the cell handover type is intra-cell handover, measurement interruption during intra-cell handover can be avoided, handover delay of intra-cell handover can be reduced, and overhead of air interface configuration and measurement report signaling during intra-cell handover can be reduced by keeping the mobility measurement configuration parameter unchanged.
The embodiment of the present invention further provides a cell switching apparatus, which includes a memory, a processor, and a cell switching program stored in the memory and executable on the processor, wherein the processor executes the cell switching program to implement the cell switching method.
According to the cell switching device in the embodiment of the present invention, by using the cell switching method, when it is determined that the cell switching type is intra-cell switching, measurement interruption during intra-cell switching can be avoided, switching delay of intra-cell switching can be reduced, and overhead of air interface configuration and measurement report signaling during intra-cell switching can be reduced by keeping the mobility measurement configuration parameters unchanged.
Fig. 6 is a schematic structural diagram of a cell switching apparatus according to an embodiment of the present invention. As shown in fig. 6, the cell switching apparatus 100 includes: a receiving module 110, a determining module 120, and a switching module 130.
The receiving module 110 is configured to receive a reconfiguration message sent by a network side; the determining module 120 is configured to determine a cell switching type according to the reconfiguration message; the handover module 130 is configured to keep the mobility measurement configuration parameter unchanged when the cell handover type is intra-cell handover.
In some embodiments, the reconfiguration message includes a source cell mobility measurement configuration parameter, and the handover module 130 is specifically configured to: and when the cell switching type is intra-cell switching, firstly performing measurement deletion action, and then recovering measurement configuration according to the source cell mobility measurement configuration parameters.
In some embodiments, the measure delete action comprises: deleting periodic measurements; deleting the measurement evaluation result; stopping the measurement association timer; removing the measurement gap; the inter-frequency and inter-system measurements are suspended.
In some embodiments, the determining module 120 is specifically configured to: and when the cell center frequency point and the cell ID of the target cell are the same as those of the source cell, determining that the target cell is switched in the cell.
In some embodiments, the reconfiguration message includes mobility control parameters including a cell center frequency point and a cell ID of the target cell.
In some embodiments, the switching module 130 is specifically configured to: when the cell switching type is the inter-cell switching, the measurement deleting action is firstly carried out, and then the mobility measurement configuration parameters are reconfigured.
In some embodiments, the security keys are updated by an intra-cell handover.
It should be noted that, for the description of the cell switching apparatus in the present application, please refer to the description of the cell switching method in the present application, and details are not repeated here.
According to the cell switching device provided by the embodiment of the invention, the receiving module is used for receiving the reconfiguration message sent by the network side, the determining module is used for determining the cell switching type according to the reconfiguration message, and when the cell switching type is intra-cell switching, the switching module is used for keeping the mobility measurement configuration parameters unchanged. Therefore, when the cell switching type is determined to be intra-cell switching, by keeping the mobility measurement configuration parameters unchanged, the measurement interruption during the intra-cell switching can be avoided, the switching delay of the intra-cell switching is reduced, and the overhead of air interface configuration and measurement report signaling during the intra-cell switching is reduced.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A cell switching method is applied to a mobile terminal, and the method comprises the following steps:
when a reconfiguration message is received, determining a cell switching type according to the reconfiguration message;
and when the cell switching type is intra-cell switching, keeping the mobility measurement configuration parameters unchanged.
2. The cell handover method according to claim 1, wherein the reconfiguration message includes a source cell mobility measurement configuration parameter, and when the cell handover type is intra-cell handover, the method further includes:
and firstly, performing measurement deletion action, and then recovering measurement configuration according to the source cell mobility measurement configuration parameters.
3. The cell handover method of claim 2, wherein the measurement deletion action comprises:
deleting periodic measurements;
deleting the measurement evaluation result;
stopping the measurement association timer;
removing the measurement gap;
the inter-frequency and inter-system measurements are suspended.
4. The cell switching method according to any one of claims 1 to 3, wherein the reconfiguration message is used to indicate a cell center frequency and a cell ID of a target cell, and the determining the cell switching type according to the reconfiguration message includes:
and when the cell center frequency point and the cell ID of the target cell are the same as those of the source cell, determining that the target cell is switched in the cell.
5. The cell switching method according to claim 4, wherein the reconfiguration message includes mobility control parameters, and the mobility control parameters include a cell center frequency point and a cell ID of the target cell.
6. The cell switching method according to any of claims 1-3, wherein when the cell switching type is inter-cell switching, the measurement deletion action is performed first, and then the mobility measurement configuration parameters are reconfigured.
7. The cell handover method according to claim 1, wherein the security key is updated by intra-cell handover.
8. A computer-readable storage medium, having stored thereon a cell handover program which, when executed by a processor, implements the cell handover method according to any one of claims 1-7.
9. A cell handover apparatus comprising a memory, a processor and a cell handover program stored in the memory and executable on the processor, wherein the processor causes the cell handover method according to any one of claims 1 to 7 to be performed by executing the cell handover program.
10. A cell switching apparatus, applied to a mobile terminal, the apparatus comprising:
the receiving module is used for receiving the reconfiguration message sent by the network side;
a determining module, configured to determine a cell switching type according to the reconfiguration message;
and the switching module is used for keeping the mobility measurement configuration parameters unchanged when the cell switching type is intra-cell switching.
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