CN104270788A - Inter-system switching method and inter-system switching equipment - Google Patents

Inter-system switching method and inter-system switching equipment Download PDF

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Publication number
CN104270788A
CN104270788A CN201410508826.9A CN201410508826A CN104270788A CN 104270788 A CN104270788 A CN 104270788A CN 201410508826 A CN201410508826 A CN 201410508826A CN 104270788 A CN104270788 A CN 104270788A
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Prior art keywords
access network
community
identification information
subscriber equipment
switched
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CN201410508826.9A
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CN104270788B (en
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王志新
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports

Abstract

The invention discloses an inter-system switching method and inter-system switching equipment. The inter-system cell switching success rate is improved, the cell network loads are reduced, and cell network resources are more reasonably distributed. The inter-system switching method comprises the steps that a pilot frequency measurement report reported by user equipment of a first access network cell is received, wherein the pilot frequency measurement report comprises identification information of a second access network cell, and the identification information meets preset switching conditions; according to the identification information of the second access network cell, a preset cell identification information list is searched for identification information which is the same as the identification information of the second access network cell; if the identification information which is the same as the identification information of the second access network cell is not found in the preset cell identification information list, the user equipment is triggered is to be switched into the second access network cell through a redirection process.

Description

A kind of method and apparatus of different systematic evaluation
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and apparatus of different systematic evaluation.
Background technology
Along with intelligent subscriber equipment (User Equipment, popularizing UE), Packet Service (Packet Service, PS) there is fulminant growth, occupy most of Time division multiple access (Time Division-Synchronized Code Division Multiple Access, TD-SCDMA) wireless network resource, causes the load of TD-SCDMA network more and more higher.Due to by the Long Term Evolution of subscriber equipment from TD-SCDMA system to the time-division (Time Division-Long Term Evolution, TD-LTE) switching of system, subscriber equipment can be shared different networks, thus realize PS service distributing, alleviate network load.
See Fig. 1, radio network controller (Radio Network Controller, RNC) after the PS business of UE has been set up, according to wireless heterogeneous networks (Radio Resource Control, RRC) set up message and judged whether this UE supports universal mobile telecommunications system (the Universal Mobile Telecommunication System of evolution, UMTS) wireless access network (Evolved UMTS Radio Access Network, E-UTRAN), if this UE supports E-UTRAN, and the Serving cell residing for this UE exists supports adjacent E-UTRAN community, then RNC sends isosystem measurement control information (Inter-RAT Measurement Control) to this UE, require that this UE carries out pilot measurement to adjacent E-UTRAN community, wherein, this isosystem measurement control information comprises, the frequency point information of adjacent E-UTRAN community, isosystem measurement amount, the duration of event judging threshold and test signal.Wherein, isosystem measurement amount is Reference Signal Received Power (Reference Signal Received Power, or Reference Signal Received Quality (Reference Signal Received Quality RSRP), RSRQ), the frequency point information of adjacent E-UTRAN community comprises frequency point number and the Measurement bandwidth of adjacent E-UTRAN community.
This UE, for the frequency point number of E-UTRAN community adjacent in isosystem measurement control information, carries out pilot measurement to isosystem measurement amount.According to duration and the event judging threshold of the test signal preset in isosystem measurement control information, obtain when meeting different system 3A event, namely within the duration of the test signal preset, when the result that measurement obtains continues to meet event judging threshold, measurement report is reported RNC by this UE, wherein, measurement report comprises: measure the result obtained and whether meet the frequency point number of pre-conditioned, adjacent E-UTRAN community and the Physical Cell Identifier of adjacent E-UTRAN community.
The measurement report that this UE of RNC real-time reception reports, determine to meet pre-conditioned adjacent E-UTRAN community according to the measurement report received, the Physical Cell Identifier of this E-UTRAN community in measurement report is searched again from the static data allocation list of RNC, if can not find out the Physical Cell Identifier of this E-UTRAN community in measurement report, the PS business that then cannot trigger this UE switches to TD-LTE, that is, this UE is still retained in TD-SCDMA network; If find the Physical Cell Identifier of this E-UTRAN community in measurement report, then determine that an E-UTRAN community is as Target cell, triggers the reorientation of this UE for Target cell.If this UE is to Target cell convert failed, i.e. reorientation failure, then this UE is still retained in TD-SCDMA network.
Due to TD-LTE dispose early stage, the network planning is incomplete, TD-LTE community is leaked and is joined, the Physical Cell Identifier meeting pre-conditioned E-UTRAN community in the measurement report received may be caused, also no record in the static data allocation list of RNC, therefore cause searching the Physical Cell Identifier less than this E-UTRAN community in measurement report, the switching of PS business to TD-LTE of this UE cannot be triggered, this UE is still retained in TD-SCDMA network; Due to core net (Core Network, CN) interface of the to be switched Target cell determined is not supported, or the network element interface of different manufacturers is not supported mutually, thus support incomplete between the core net caused and UE, make UE to be switched Target cell convert failed, UE is still retained in TD-SCDMA network.
In sum, early stage at network design, utilize prior art to carry out the success rate of different intersystem handover low, and when handoff failure, this UE is still retained in former network, is unfavorable for the load alleviating former network.
Summary of the invention
Embodiments provide a kind of method and apparatus of different systematic evaluation, in order to improve the success rate switched between different system cell, reduce the network load of community, make the distribution of subzone network resource more reasonable.
The method of a kind of different systematic evaluation that the embodiment of the present invention provides, the method comprises:
Receive the pilot measurement reports of the user equipment to report of the first Access Network community, wherein, described pilot measurement reports comprises: the identification information meeting the community under the second pre-conditioned Access Network;
According to the identification information of the community under described second Access Network from the cell identity information list preset, search and whether there is identical identification information;
If search in described list less than the identical identification information of identification information, then trigger described subscriber equipment and be switched to the second Access Network community by redirection process.
By the method, when searching the identification information less than the community under the second Access Network in pilot measurement reports, initiatively triggering and being redirected, improve the success rate that different system cell switches, reduce the load of former network, make the distribution of Internet resources more reasonable.
Preferably, described default switching condition is: the isosystem measurement value that the subscriber equipment measurement of described first Access Network community obtains, and continues to meet event judging threshold in preset time period.
Preferably, if find the identical identification information of identification information in described list, then trigger described subscriber equipment and be switched to the second Access Network community by repositioning process.
Preferably, if described subscriber equipment is for the reorientation failure of the second Access Network community, then according to the preparation reorientation failed message received, triggers described subscriber equipment and be switched to the second Access Network community by redirection process.
Preferably, according to the preparation reorientation failed message received, trigger described subscriber equipment and be switched to the second Access Network community by redirection process, comprising:
If the reason of described repositioning process failure is not the number of resources of the second Access Network community do not meet predetermined threshold value, then triggers described subscriber equipment and be switched to the second Access Network community by redirection process.
Preferably, also comprise in described pilot measurement reports: meet the frequency point number that community under the second pre-conditioned Access Network is corresponding;
Trigger described subscriber equipment and be switched to the second Access Network community by redirection process, comprising:
Send the redirected Trigger message for the second Access Network community to described subscriber equipment, wherein, described redirected Trigger message comprises: meet the frequency point number that community under the second pre-conditioned Access Network is corresponding in described pilot measurement reports.
The equipment of a kind of different systematic evaluation that the embodiment of the present invention provides, this equipment comprises:
Receive reporting modules, for receiving the pilot measurement reports of the user equipment to report of the first Access Network community, wherein, described pilot measurement reports comprises: the identification information meeting the community under the second pre-conditioned Access Network;
Search identification information module, for according to the identification information of the community under described second Access Network from the cell identity information list preset, search and whether there is identical identification information;
Trigger module, if for searching in described list less than the identical identification information of identification information, then triggers described subscriber equipment and is switched to the second Access Network community by redirection process.
By this equipment, when searching the identification information less than the community under the second Access Network in pilot measurement reports, initiatively triggering and being redirected, improve the success rate that different system cell switches, reduce the load of former network, make the distribution of Internet resources more reasonable.
Preferably, described default switching condition is: the isosystem measurement value that the subscriber equipment measurement of described first Access Network community obtains, and continues to meet event judging threshold in preset time period.
Preferably, if find the identical identification information of identification information in described list, then described trigger module triggers described subscriber equipment and is switched to the second Access Network community by repositioning process.
Preferably, if the failure of described repositioning process, then described trigger module triggers described subscriber equipment and is switched to the second Access Network community by redirection process.
Preferably, described trigger module according to the preparation reorientation failed message that receives, when triggering described subscriber equipment for the second Access Network community redirected, specifically for:
If the preparation reorientation failed message received does not comprise, the number of resources of the second Access Network community does not meet predetermined threshold value, then trigger described subscriber equipment being redirected for the second Access Network community.
Preferably, also comprise in described pilot measurement reports: meet the frequency point number that community under the second pre-conditioned Access Network is corresponding;
Described trigger module when triggering described subscriber equipment for the second Access Network community redirected, specifically for:
Send the redirected Trigger message for the second Access Network community to described subscriber equipment, wherein, described redirected Trigger message comprises: meet the frequency point number that community under the second pre-conditioned Access Network is corresponding in described pilot measurement reports.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the pilot measurements of user terminal determination adjacent different system cell;
The schematic flow sheet of the method for a kind of different systematic evaluation that Fig. 2 provides for the embodiment of the present invention;
The schematic flow sheet of the different systematic evaluation that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the equipment of a kind of different systematic evaluation that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Embodiments provide a kind of method and apparatus of different systematic evaluation, in order to improve the success rate switched between different system cell, reduce the network load of community, make the distribution of subzone network resource more reasonable.
See Fig. 2, the method for a kind of different systematic evaluation that the embodiment of the present invention provides, the method comprises the steps:
S201, receive the pilot measurement reports of the user equipment to report of the first Access Network community, wherein, described pilot measurement reports comprises: the identification information meeting the community under the second Access Network of the switching condition preset;
S202, according to described meet preset switching condition the second Access Network under community identification information from preset cell identity information list, search and whether there is identical identification information; Wherein, described default cell identity information list comprises the identification information of the community under the second Access Network;
If S203 searches less than the identical identification information of identification information in described list, then trigger described subscriber equipment and be switched to the second Access Network community by redirection process.
Preferably, described default switching condition is: the isosystem measurement value that the subscriber equipment measurement of described first Access Network community obtains, and continues to meet event judging threshold in preset time period.Wherein, described isosystem measurement amount, preset time period and event judging threshold are obtain from the isosystem measurement control information that described subscriber equipment receives.
Preferably, if find the identification information of the community under the second Access Network in described pilot measurement reports in described list, then trigger described subscriber equipment and be switched to the second Access Network community by repositioning process;
If described subscriber equipment for the repositioning process failure of the second Access Network community, then determines the reason of described reorientation failure according to the preparation repositioning process failed message received; When the number of resources that the reason of described repositioning process failure is the second Access Network community does not meet predetermined threshold value, described subscriber equipment is retained in the first Access Network community; When the number of resources that the reason of described reorientation failure is not the second Access Network community does not meet predetermined threshold value, trigger described subscriber equipment and be switched to the second Access Network community by redirection process.
Because the concrete switching flow of the redirected mode of described different system is, the RRC that RNC sends to UE discharges (RRC Release) message, wherein, carries the frequency point number of the community under adjacent different system in described RRC release message; UE, according to the frequency point number of carrying in RRC release message, from the different system cell that main separation is adjacent, and initiates PS service request.Therefore, if need to trigger described subscriber equipment being redirected for the second Access Network community, must also comprise in described pilot measurement reports: meet the frequency point number that community under the second pre-conditioned Access Network is corresponding, the described subscriber equipment of described triggering is switched to the second Access Network community by redirection process, comprising:
Send the redirected Trigger message for the second Access Network community to described subscriber equipment, wherein, described redirected Trigger message comprises: meet the frequency point number that community under the second Access Network of the switching condition preset is corresponding in described pilot measurement reports;
Wherein, if comprise the identification information of the community under multiple second Access Network in described pilot measurement reports, then frequency point number corresponding for the community under the second Access Network is loaded in redirected Trigger message, send to described subscriber equipment, and switched by the community of described subscriber equipment under main separation second Access Network;
If find the identification information of the community under the second Access Network in multiple described pilot measurement reports, then select the community under the second Access Network that in described pilot measurement reports, isosystem measurement value is the highest, be the Target cell under the second Access Network, trigger the reorientation of described subscriber equipment for this Target cell; If reorientation failure, be then loaded in redirected Trigger message by frequency point number corresponding for this Target cell, initiatively send to described subscriber equipment, and switched for this Target cell by described subscriber equipment; Or, select the community under secondary the second high Access Network of isosystem measurement value in described pilot measurement reports, it is the Target cell under the second Access Network, again trigger the reorientation of described subscriber equipment for this Target cell, until the reorientation of all communities under the second Access Network found is all failed, then frequency point number corresponding for the community under multiple second Access Networks found is loaded in redirected Trigger message, send to described subscriber equipment, and switched by the community of described subscriber equipment under main separation second Access Network.
Be the prior art of the switching of system due to re-positioning technology and redirecting technique, for different systematic evaluation provided by the invention better can be understood, will explain these two kinds of switching modes below.
Wherein, the concrete switching flow of the relocation loading mode of described different system is as follows:
Step one, RNC send re-positioning request (Relocation Required) message to CN;
Step 2, CN forward RELOCATION REQUEST message to the Target cell determined;
Step 3, Target cell are distributed the resource in this community, then reply relocation response message to CN;
Step 4, CN, according to the relocation response message received, determine whether to send reorientation order (Relocation Command) message to RNC, if the relocation response message received is successfully, then send reorientation command messages to RNC; If the relocation response message received is unsuccessfully, then sends reorientation to RNC and prepare unsuccessfully (Relocation Preparation Failure) message;
If step 5 RNC receives reorientation command messages, then send to UE and transfer UTRAN order (Handover from UTRAN Command) message; If RNC receives reorientation and prepares failed message, then this UE is retained in former community;
The transfer UTRAN command messages that step 6, basis receive, UE switches to Target cell.
Wherein, if CN or UE supports imperfection, then CN in step 4 can be caused to send reorientation to RNC and to prepare failed message.
In addition, the concrete switching flow of the redirected mode of described different system is, the RRC that RNC sends to UE discharges (RRC Release) message, wherein, carries the frequency point number of the community under adjacent different system in described RRC release message; UE, according to the frequency point number of carrying in RRC release message, from the different system cell that main separation is adjacent, and initiates PS service request.
See Fig. 3, when described first Access Network is TD-SCDMA, when described second Access Network is TD-LTE, the idiographic flow of the different-system switching method that the embodiment of the present invention proposes is as described below:
Step one, when meeting different system 3A event, pilot measurement reports is reported RNC by the subscriber equipment in TD-SCDMA community; RNC receives the pilot measurement reports of this user equipment to report;
Step 2, from RNC configuration static data, search the Physical Cell Identifier of TD-LTE in the pilot measurement reports reported;
If step 3 finds the Physical Cell Identifier of TD-LTE in the pilot measurement reports reported, then activated user equipment is switched to the adjacent TD-LTE community in described pilot measurement reports by repositioning process; Otherwise, according to the frequency point number of TD-LTE community in described pilot measurement reports, trigger described subscriber equipment and be switched to adjacent TD-LTE community in described pilot measurement reports by redirection process;
If step 4 reorientation success, then send to subscriber equipment and transfer UTRAN order; Otherwise, according to the frequency point number of TD-LTE community in described pilot measurement reports, trigger described subscriber equipment and be switched to adjacent TD-LTE community in described pilot measurement reports by redirection process.
See Fig. 4, the equipment of a kind of different systematic evaluation that the embodiment of the present invention provides, this equipment comprises:
Receive reporting modules 401, for receiving the pilot measurement reports of the user equipment to report of the first Access Network community, wherein, described pilot measurement reports comprises: the identification information meeting the community under the second Access Network of the switching condition preset;
Search identification information module 402, for according to the identification information of the community under described second Access Network from the cell identity information list preset, search and whether there is identical identification information;
Trigger module 403, if for searching in described list less than the identical identification information of identification information, then triggers described subscriber equipment and is switched to the second Access Network community by redirection process.
Preferably, described default switching condition is: the isosystem measurement value that the subscriber equipment measurement of described first Access Network community obtains, and continues to meet event judging threshold in preset time period.
Preferably, if find the identification information of the community under the second Access Network in described pilot measurement reports in described list, then described trigger module 403 triggers described subscriber equipment and is switched to the second Access Network community by repositioning process.
Preferably, if the failure of described repositioning process, then described trigger module 403 triggers described subscriber equipment and is switched to the second Access Network community by redirection process.
Preferably, described trigger module 403 trigger described subscriber equipment be switched to the second Access Network community by redirection process time, specifically for:
If the reason of described repositioning process failure is not the number of resources of the second Access Network community do not meet predetermined threshold value, then triggers described subscriber equipment and be switched to the second Access Network community by redirection process.
Preferably, also comprise in described pilot measurement reports: the frequency point number that the community under the second Access Network of the satisfied switching condition preset is corresponding;
Described trigger module 403 trigger described subscriber equipment be switched to the second Access Network community by redirection process time, specifically for:
Send the redirected Trigger message for the second Access Network community to described subscriber equipment, wherein, described redirected Trigger message comprises: meet the frequency point number that community under the second Access Network of the switching condition preset is corresponding in described pilot measurement reports.
Preferably, described reception reporting modules 401 provided by the invention, described in search identification information module 402, described trigger module 403 all can be realized by processor.
In sum, the present invention is directed to and occur searching the identification information less than the community in pilot measurement reports, or during the both of these case of reorientation failure, if judged the adjacent Target cell of better signal, then active activated user equipment being redirected for this Target cell, this subscriber equipment is made to initiate different systematic evaluation as early as possible, achieve the successful switch of different system, thus improve the success rate of different intersystem handover, reduce the load of former network, make the distribution of Internet resources more reasonable.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (12)

1. a method for different systematic evaluation, is characterized in that, the method comprises:
Receive the pilot measurement reports of the user equipment to report of the first Access Network community, wherein, described pilot measurement reports comprises: the identification information meeting the community under the second Access Network of the switching condition preset;
According to the identification information of the community under described second Access Network from the cell identity information list preset, search and whether there is identical identification information;
If search in described list less than the identical identification information of identification information, then trigger described subscriber equipment and be switched to the second Access Network community by redirection process.
2. method according to claim 1, is characterized in that, described default switching condition is: the isosystem measurement value that the subscriber equipment measurement of described first Access Network community obtains, and continues to meet event judging threshold in preset time period.
3. method according to claim 1, is characterized in that, if find the identical identification information of identification information in described list, then triggers described subscriber equipment and is switched to the second Access Network community by repositioning process.
4. method according to claim 3, is characterized in that, if the failure of described repositioning process, then triggers described subscriber equipment and is switched to the second Access Network community by redirection process.
5. method according to claim 4, is characterized in that, triggers described subscriber equipment and is switched to the second Access Network community by redirection process, be specially:
If the reason of described repositioning process failure is not the number of resources of the second Access Network community do not meet predetermined threshold value, then triggers described subscriber equipment and be switched to the second Access Network community by redirection process.
6. the method according to the arbitrary claim of claim 2-5, is characterized in that, also comprises in described pilot measurement reports: the frequency point number that the community under the second Access Network of the satisfied switching condition preset is corresponding;
Trigger described subscriber equipment and be switched to the second Access Network community by redirection process, comprising:
Send the redirected Trigger message for the second Access Network community to described subscriber equipment, wherein, described redirected Trigger message comprises: meet the frequency point number that community under the second Access Network of the switching condition preset is corresponding in described pilot measurement reports.
7. an equipment for different systematic evaluation, is characterized in that, this equipment comprises:
Receive reporting modules, for receiving the pilot measurement reports of the user equipment to report of the first Access Network community, wherein, described pilot measurement reports comprises: the identification information meeting the community under the second Access Network of the switching condition preset;
Search identification information module, for according to the identification information of the community under described second Access Network from the cell identity information list preset, search and whether there is identical identification information;
Trigger module, if for searching in described list less than the identical identification information of identification information, then triggers described subscriber equipment and is switched to the second Access Network community by redirection process.
8. equipment according to claim 7, is characterized in that, described default switching condition is: the isosystem measurement value that the subscriber equipment measurement of described first Access Network community obtains, and continues to meet event judging threshold in preset time period.
9. equipment according to claim 7, is characterized in that, if find the identical identification information of identification information in described list, then described trigger module triggers described subscriber equipment and is switched to the second Access Network community by repositioning process.
10. equipment according to claim 9, is characterized in that, if the failure of described repositioning process, then described trigger module triggers described subscriber equipment and is switched to the second Access Network community by redirection process.
11. equipment according to claim 10, is characterized in that, described trigger module trigger described subscriber equipment be switched to the second Access Network community by redirection process time, specifically for:
If the reason of described repositioning process failure is not the number of resources of the second Access Network community do not meet predetermined threshold value, then triggers described subscriber equipment and be switched to the second Access Network community by redirection process.
12. equipment according to Claim 8 described in-11 arbitrary claims, is characterized in that, also comprise in described pilot measurement reports: meet the frequency point number that community under the second Access Network of the switching condition preset is corresponding;
Described trigger module trigger described subscriber equipment be switched to the second Access Network community by redirection process time, specifically for:
Send the redirected Trigger message for the second Access Network community to described subscriber equipment, wherein, described redirected Trigger message comprises: meet the frequency point number that community under the second Access Network of the switching condition preset is corresponding in described pilot measurement reports.
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