CN103428761A - Method for indicating MDT (minimization of drive tests) PLMN (public land mobile network) - Google Patents
Method for indicating MDT (minimization of drive tests) PLMN (public land mobile network) Download PDFInfo
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Abstract
The invention provides a method for indicating an MDT (minimization of drive tests) PLMN (public land mobile network). According to the method, by enabling an eNB to reset related indication information of the MDT PLMN and send the information to a target eNB in the switching process, or enabling a mobility management entity (MME) to send information of the MDT PLMN to the target eNB, the eNB can obtain correct related information of the MDT PLMN. The invention further provides a method for indicating the MDT PLMN to user equipment (UE), and in the UE registration process or area renewal process, indication information of the MDT PLMN is sent to the UE through the eNB. By applying the method, when the UE moves between different PLMNs, the eNB and the UE can respectively obtain the correct related information of the MDT PLMN, and accordingly continuity of MDT is achieved.
Description
Technical field
The present invention relates to wireless communication technology, particularly a kind of method of indicating MDT PLMN.
Background technology
The system architecture diagram that Fig. 1 is System Architecture Evolution (SAE).Wherein:
Subscriber equipment (UE) the 101st, be used for receiving the terminal equipment of data.Evolved universal terrestrial radio access network (E-UTRAN) the 102nd, Radio Access Network, comprising the macro base station (eNodeB/NodeB) that the access of radio network interface is provided for UE.Mobile management entity (MME) 103 is in charge of mobile context, session context and the security information of UE.Gateway (SGW) 104 mainly provides the function of user plane, and MME 103 and SGW 104 may be in the Same Physical entities.Grouped data network gateway (PGW) 105 is responsible for the functions such as charging, Lawful Interception, also can be with SGW 104 in the Same Physical entity."Policy and Charging Rules Function entity (PCRF) 106 provides service quality (QoS) strategy and charging criterion.Universal grouping wireless business supporting node (SGSN) the 108th, provide the apparatus for network node of route for the transmission of data in universal mobile telecommunications system (UMTS).Home subscriber server (HSS) the 109th, the local of UE ownership subsystem, responsible protection comprises address, the user security information of current location, the service node of subscriber equipment, the user profile such as packet data content of subscriber equipment.
MDT (Minimization of drive tests, minimum road test) is to transmit some metrical informations at control plane, to reduce manual testing's burden.MDT measures will support real-time and non real-time measurement.The configuration information of measuring is configured in Access Network control system (E-UTRAN or UTRAN) by network management system, then by the Access Network control system, by RRC message, sends to UE.The MDT measurement result of UE sends to E-UTRAN/UTRAN, and measurement report can comprise positional information and temporal information.E-UTRAN/UTRAN sends to the MDT entity in core net to measurement result.
The mode of initiating according to MDT, MDT can be divided into MDT and the MDT based on signaling based on management.MDT based on management refers to that E-UTRAN/UTRAN receives from management entity the message that MDT activates, and the MDT based on signaling refers to that E-UTRAN/UTRAN receives from MME the message that MDT activates.
Fig. 2 has described the structure chart of the MDT based on management.In Fig. 2:
The 201st, management node (Element Management, be called for short EM), management node 201 sends follows the tracks of activation request message to network node (Network Element) 202, and network node 202 can be the eNB in the LTE system, comprises the configuration information of MDT in message.The configuration information of MDT mainly comprises: MDT position alternative condition, reporting mechanism configuration, track reference (Trace Reference, abbreviation TR), Trace collects entity (Trace Collection Entity, abbreviation TCE) IP address, the information such as job category, the anonymity of MDT data.
Above-mentioned job category can be configured to one of Four types: Immediate MDT only, Logged MDT only, Trace only and Immediate MDT and Trace.
The UE which position MDT position alternative condition has configured may be selected the user that MDT measures.MDT position alternative condition can be configured to the scope of community, or TAC(Type Allocation Code type assigned code) scope, or whole public land mobile network (Public Land Mobile Network, be called for short PLMN).UE in scope, may be selected the UE that is MDT.The TR unique identification MDT process.In a MDT process, eNB can select a plurality of users to carry out the MDT measurement.
UE203 carries out the MDT measurement according to configuration, and, when meeting the report condition, measurement result is sent to network node eNB.
ENB from the measurement report that UE reports, obtain TR, TRSR, TCE the IP address sign and measurement result, and send cell flow tracking (Cell Traffic Trace) message to MME.It is the S1 AP Id that distributes of UE and the IP address of TCE that message comprises TR, TRSR cell ID, eNB/MME.MME finds international mobile subscriber identity (IMSI) or the International Mobile Equipment Identity code software version (IMEISV) of UE, and IMSI/IMEISV is sent to TCE.
The MDT type that MDT based on signaling supports is also above-mentioned Four types, and difference is: the MDT initiation message is to send to eNB from MME, and configuration information is that MME sends to eNB, and TR and TRSR are that MME distributes.When UE moves between different eNB, the MDT configuration information need to be transferred to above purpose eNB.And the configuration information of the MDT of the MDT based on management does not need to be transferred to above purpose eNB.
Current agreement only is supported under same PLMN carries out MDT measurement and report.
A PLMN has a PLMN sign, and sign comprises national code (Mobile Country Code is called for short MCC) and network code (Mobile Network Code is called for short MNC).
Local PLMN(HPLMN) refer to that the MCC comprised in the IMSI of MCC in PLMN sign and MNC and UE distinguishes identical PLMN with MNC.The local PLMN(that is equal to of UE is called for short EHPLMN) be the CAMEL-Subscription-Information of UE, send to MME by HSS.EHPLMN is one group of PLMN, when UE selects PLMN, and the position of the HPLMN of this group PLMN and UE in being equal to, the sign of this group PLMN forms the EHPLMN list, and this EHPLMN list is kept in UE and HSS.
The community of UE below a PLMN, the MDT that has received network measures configuration, and this MDT measures configuration if configuration UE is carried out the MDT measurement at idle pulley, is called recordable type MDT (Logged MDT), UE receives that this MDT measures the rear preservation of configuration, and this PLMN is called as MDT-PLMN.When UE enters into idle pulley, when the measuring condition that has met the MDT configuration, UE starts to carry out the MDT measurement under idle pulley, and measurement result is kept in the MDT record of UE.When UE moves to another one PLMN Xia De community, UE finds that the PLMN sign of the new community of selecting is different with the PLMN sign (being MDT-PLMN) that configuration MDT measures, and UE no longer carries out the MDT measurement, also measurement result is not reported to network.Only have the UE of working as to enter into MDT-PLMN network Xia De community, just can carry out the report of MDT measurement.
Network terminal also only supports a MDT under PLMN to measure, if the PLMN sign that in the message that eNB finds to ask MDT to start, TR comprises is different with the sign of himself supporting, eNB will ignore this request.For the MDT based on management, when UE has carried out the X2 switching, source eNB only identifies when identical at purpose PLMN sign and source PLMN, just user's agreement information can be dealt into to purpose eNB.When purpose eNB belongs to another one PLMN, because having the user, purpose eNB do not agree information, therefore, purpose eNB just can not select this UE to carry out the MDT measurement.
An operator can have a plurality of PLMN signs, during the needing of practical application: the MDT of UE measures can be continuous in an operator's scope, be that UE moves to another one PLMN, when this PLMN and original PLMN belong to an operator, MDT measures and can proceed, and can report to network.In order to support this demand, need to be improved prior art.
In order to support UE to carry out MDT measurement and report under a plurality of PLMN, as the UE in idle pulley, when carrying out the MDT measurement, move under other PLMN, if this PLMN belongs to MDT PLMN list, UE can proceed the MDT measurement.If UE has entered into connection mode, when setting up the RRC connection, UE reports to network the indication that a MDT measures, receive this indication, eNB can send RRC message, requires UE to report the surveying record of MDT, and correct flow process is after eNB obtains this surveying record, find the IP address of TCE, and surveying record is sent to node corresponding to IP of TCE.
According to current conclusion, MDT PLMN is a subset that is equal to PLMN, and MME sets up request message, handover request message or descending NAS message transfer by the initial UE context service PLMN of UE and corresponding being equal to below PLMN(of this service PLMN are called for short to ePLMN) send to eNB.UE also needs to obtain current service PLMN and ePLMN list, and MME sends to UE to ePLMN by non-access layer information.The method of one of them indication MDT PLMN is:
MME by a bit mapping (bitmap) indicate in ePLMN which/which PLMN is MDT PLMN.For example, with first PLMN in highest order indication ePLMN list, whether support MDT, support to be arranged to 1, do not support to be arranged to 0.According to current agreement, the ePLMN list comprises at most 15 PLMN, so the figure place of bitmap can be arranged to 15 bits.MME sends to eNB to bitmap by initial UE context process of establishing, handover request message or descending NAS transmitting procedure.In this process, according to existing agreement, MME just need to send to eNB to the ePLMN list information originally.By the indication of bitmap, eNB can know in the ePLMN list, which PLMN supports MDT's.Bitmap has indicated ePLMN whether to possess the ability of MDT, for current service PLMN, is not to be included in the ePLMN the inside, owing to only in the situation that serve PLMN, supporting MDT, and the information of MDT PLMN, for example, above-mentioned bitmap, just can send to eNB.Thus, eNB just can be known the MDT ability of service PLMN and PLMN corresponding to ePLMN.
Afterwards, if MME configures certain UE, carry out the MDT measurement, or eNB selects certain UE to carry out the MDT measurement, eNB measures configuration messages by MDT above-mentioned bitmap is transmitted to UE.UE by the ePLMN list and the bitmap that preserve which is known/which PLMN is MDT PLMN.Under the method, eNB does not need bitmap is processed, and the bitmap that only need to send over MME is transmitted to UE.The benefit of the method is can reduce the information of repetition at S1 and air interface transmission, but also has following problem.
First problem is: if adopt the bitmap of 15 bits, UE has carried out the X2 switching, and in the process of switching, source eNB sends to purpose eNB by bitmap and ePLMN by handover request.If change has occurred in service PLMN, this bitmap will be used to indicate the ePLMN that new Serving cell is corresponding and whether support MDT, but whether corresponding new Serving cell supports MDT, and in fact this bitmap can not indicate, the result that this will cause purpose eNB to make mistake.
Second Problem is: UE has carried out the X2 switching, if change has occurred in service PLMN, corresponding ePLMN list may change, MDT PLMN is the subset of ePLMN, change also may occur in MDTPLMN, do not have at present corresponding method when X2 switches, to notify eNB new PLMN list corresponding to MDT, the result that this will cause the current service eNB of UE to make mistake.
The 3rd problem is: if the UE of connection mode moves under ePLMN, changed service PLMN, the ePLMN list that UE preserves so also can change to some extent.For example, before switching, the service PLMN=1 of UE, ePLMN={2,3}, after switching, the service PLMN=2 of UE, ePLMN={1,3}, or ePLMN={3,1}.The variation of this ePLMN can not notified to eNB, belongs to the problem of implementation of UE.If under PLMN=2, MME or eNB have selected UE to carry out the MDT measurement, eNB sends MDT and measures configuration to UE, measure configuration messages and comprise bitmap, UE is by the ePLMN of preservation and the PLMN information of the supported MDT of bitmap, but change has occurred the ePLMN of UE, and bitmap is for former ePLMN's, like this, will cause UE to calculate wrong result.
Visible, adopt prior art, when the service PLMN of UE changes, the MDT PLMN relevant information that will cause eNB and UE to make mistake, need to propose corresponding solution and make eNB and UE obtain respectively correct MDT PLMN relevant information.
Summary of the invention
The invention provides the method for the MDT of indication PLMN a kind of, with when UE moves between different PLMN, make eNB or UE can obtain correct MDT PLMN relevant information, realize the continuity of MDT.
The method of the public land mobile network (PLMN) of a kind of indication minimum road test provided by the invention (MDT) comprising:
A, the first base station (eNB) receive the indication information of MDT PLMN from mobile management entity (MME); The indication information of this MDT PLMN is for meaning the PLMN(ePLMN that is equal to of subscriber equipment (UE)) whether PLMN corresponding to list support MDT;
B, in handoff procedure, an eNB sends to purpose eNB by the MDT ability of new service PLMN and corresponding to the indication information of the MDT PLMN of new ePLMN list;
C, an eNB receive switching response message from purpose eNB.
Preferably, the indication information of described MDT PLMN can be the bit mapping for the ePLMN list, and wherein each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.
Preferably, if before and after switching, service PLMN changes, an eNB can arrange new bit mapping according to new ePLMN list, is used to indicate PLMN corresponding in new ePLMN list and whether possesses the MDT ability.
The present invention also provides the method for the public land mobile network (PLMN) of a kind of indication minimum road test (MDT), comprising:
A, source base station (eNB) send handover request message to purpose eNB;
B, purpose eNB send switching response message to source eNB;
C, source eNB send switching command to subscriber equipment (UE);
D, UE send handoff completion message to purpose eNB;
E, purpose eNB are to mobile management entity (MME) transmit path handover request message;
F, MME, to purpose eNB transmit path switching response message, comprise the new PLMN(ePLMN that is equal in the switching response message of described path) the information of MDT PLMN.
Preferably, the information of described MDT PLMN is to support the PLMN sign of MDT, or the indication information of the MDT PLMN of ePLMN list and correspondence thereof.
Preferably, the method may further include: source eNB sends handover request message to purpose eNB, in described handover request message, comprises: the indication information whether new service PLMN sign and new service PLMN support MDT.
The present invention also provides the method for the public land mobile network (PLMN) of a kind of indication minimum road test (MDT), comprising:
(eNB) sends non-access layer information to base station for A, subscriber equipment (UE);
B, eNB are transmitted to MME by described non-access layer information;
The foundation request of C, MME transmission initial context or descending Non-Access Stratum message transfer are to eNB;
D, eNB transmission Radio Resource (RRC) reconfiguration message or descending direct message transfer, to UE, comprise indication information and the non-access layer information of MDT PLMN in message; The indication information of described MDT PLMN is for meaning the PLMN(ePLMN that is equal to of UE) whether PLMN corresponding to list support MDT.
Preferably, the indication information of described MDT PLMN is the bit mapping for the ePLMN list, and wherein each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.
As seen from the above technical solution, the method of indication MDT PLMN provided by the invention, reset the relevant indication information of MDT PLMN and send to purpose eNB by source eNB, perhaps by MME, send the information of MDT PLMN to purpose eNB, make eNB can access correct MDT PLMN relevant information, thereby, when carrying out the X2 switching, purpose eNB can know whether service PLMN and ePLMN have the ability of supporting MDT.In addition, the present invention, by the method to UE indication MDT PLMN, makes UE can obtain correct MDT PLMN relevant information, and the MDT after making it measures and record can carry out continuously under the PLMN that supports MDT.Thereby, respectively technical solution of the present invention is applied to eNB and UE, can realize the continuity of MDT.
The accompanying drawing explanation
The existing SAE system architecture diagram of Fig. 1;
The structure chart that the existing MDT of Fig. 2 measures;
The schematic flow sheet of the method that Fig. 3 is the embodiment of the present invention one indication MDT PLMN;
The schematic flow sheet of the method that Fig. 4 is the embodiment of the present invention two indication MDT PLMN;
The schematic flow sheet of the method that Fig. 5 is the embodiment of the present invention three indication MDT PLMN.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
For solving the existing problem of prior art, the present invention proposes three kinds of methods of preferably indicating MDT PLMN.
The first preferably indicates the method for MDT PLMN to comprise:
A, an eNB receive the indication information of MDT PLMN from MME; The indication information of this MDT PLMN is for meaning the PLMN(ePLMN that is equal to of UE) whether PLMN corresponding to list support MDT;
B, in handoff procedure, an eNB sends to purpose eNB by the MDT ability of new service PLMN and corresponding to the indication information of the MDT PLMN of new ePLMN list.
The second preferably indicates the method for MDT PLMN to comprise:
In handoff procedure, purpose eNB is from MME RX path switching response message, the information of the MDT PLMN that comprises new ePLMN in this path switching response message.Here, the information of MDT PLMN can be to support the PLMN sign of MDT, or the indication information of the MDTPLMN of ePLMN list and correspondence thereof.
The third preferably indicates the method for MDT PLMN to comprise:
UE in connection mode receives the indication information of MDT PLMN from eNB, whether the indication information of MDT PLMN supports MDT for PLMN corresponding to ePLMN list that means UE.
Below by three preferred embodiments, technical solution of the present invention is further elaborated.
Embodiment mono-:
The present embodiment has been described MME the indication information of ePLMN list and MDT PLMN has been sent to eNB, when X2 switches, source eNB has selected new service PLMN, source eNB sends to purpose eNB by the indication information of ePLMN list and MDT PLMN, simultaneously, source eNB also needs to indicate new Serving cell whether to have the ability of MDT.
The schematic flow sheet of the method that Fig. 3 is the embodiment of the present invention one indication MDT PLMN, the method can comprise the following steps:
Step 301:MME sends the indication information of ePLMN list and MDT PLMN to source eNB.
Preferably, this indication information can transmit by following method:
1) set up request message by the UE initial context.At present this packets of information has contained UE in information such as the cryptographic capabilities of the sign of S1 interface, the E-RAB information that set up, UE, UE wireless capability, current service PLMN and ePLMN lists.In this message, also comprised the indication information of MDT PLMN, this indication information can be a bitmap, each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.For example: can arrange first PLMN that highest order is used to indicate in the ePLMN list and whether support MDT, whether second PLMN that an inferior high position is used to indicate in the ePLMN list supports MDT, and by that analogy, 1 representative supports, 0 representative is not supported.15 PLMN can be arranged at most in the ePLMN list, so this bitmap maximum can be 15 bits.It is to support MDT that current Serving cell is defaulted as, and only, under the service PLMN that supports MDT, MME just sends to eNB by the indication information of MDT PLMN.
2) by descending NAS message transfer.At present this packets of information has contained UE in information such as the sign of S1 interface, non-access layer information, current service PLMN and ePLMN lists.In this message, also comprised the indication information of MDT PLMN, this indication information can be a bitmap, each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.For example: can arrange first PLMN that highest order is used to indicate in the ePLMN list and whether support MDT, whether second PLMN that an inferior high position is used to indicate in the ePLMN list supports MDT, and by that analogy, 1 representative supports, 0 representative is not supported.15 PLMN can be arranged at most in the ePLMN list, so this bitmap maximum can be 15 bits.It is to support MDT that current Serving cell is defaulted as, and only, under the service PLMN that supports MDT, MME just sends to eNB by the indication information of MDT PLMN.
Step 302: source eNB receives the measurement report of UE, and when the measurement report according to UE, in the time of UE need to being switched to purpose eNB, by the X2 interface between source eNB and purpose eNB, source eNB initiates the X2 handoff procedure, and source eNB sends handover request message to purpose eNB.
In this step, source eNB need to select the upper service PLMN sign of using of purpose eNB for UE, comprise new service PLMN sign in the handover request message that source eNB sends, also comprise the indication whether this service PLMN supports MDT, can also comprise the indication whether new ePLMN list and PLMN corresponding to this list possess the MDT ability in message.This indication can be a bitmap, and each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.For example: can arrange first PLMN that highest order is used to indicate in the ePLMN list and whether support MDT, whether second PLMN that an inferior high position is used to indicate in the ePLMN list supports MDT, and by that analogy, 1 representative supports, 0 representative is not supported.When service PLMN does not change, this bitmap is exactly the bitmap that in step 301, MME sends over, if change has occurred service PLMN, source eNB can calculate a new bitmap and be included in handover request message.In step 301, eNB has been known the MDT ability of each PLMN in service PLMN and ePLMN list, the PLMN sign comprised in new ePLMN list does not change, the order of just preserving may be different, eNB can calculate bitmap corresponding to ePLMN list made new advances, mean in new ePLMN list, which PLMN supports MDT's.
Perhaps, source eNB comprises the bitmap of new service PLMN sign, ePLMN list and 16 bits in handover request message, and each is respectively used to corresponding PLMN in indication service PLMN and ePLMN list and whether possesses the MDT ability.For example: can define highest order and be used to indicate new service PLMN and whether support MDT, whether first PLMN that an inferior high position is used to indicate in the ePLMN list supports MDT, and by that analogy, 1 representative supports, 0 representative is not supported.This bitmap can, when upper once X2 switching, continue to be transferred to new purpose eNB.
Step 303: purpose eNB preserves the information of receiving, and sends switching response message to source eNB.Comprise E-RAB information and the purpose eNB that purpose eNB can set up in message and will be transmitted to by source eNB the RRC message of UE.
The MDT of the service PLMN that purpose eNB contains by handoff request message indication and bitmap, or, by the bitmap of 16 bits that comprise in handover request message, can know whether new Serving cell supports MDT.
If comprise the RRC configuration information to UE in the handover request message that purpose eNB receives, wherein the RRC measurement configuration information may be arranged, carry out the MDT measurement if be configured UE at source eNB, purpose eNB need to determine whether to proceed MDT to be measured, only have the purpose of working as service PLMN to be identified in the MDT PLMN list of this UE, and the community at current UE place is in the regional extent of MDT configuration information the inside the time, purpose eNB could continue to receive the MDT report that UE sends, and does not need the MDT that discharges UE to measure configuration.If purpose service PLMN sign is not in the MDT of this UE PLMN list, purpose eNB need to comprise the MDT measurement configuration that RRC message discharges UE in switching response message, and this RRC message is transmitted to UE by source eNB.
Step 304: source eNB sends switching command to UE.Message comprises all information that is switched to purpose eNB needs, comprises enciphered message, channel parameter etc.
After step 305:UE and purpose cell synchronous, send switching response message to purpose eNB.The uplink and downlink data can start interface transmission aloft.
Step 306: purpose eNB transmit path handover request message is to MME.Comprise sign, the target area sign (be called for short TAI) of UE at the S1 interface in message, comprise the purpose service PLMN sign (selected PLMN) of selection in TAI, eNB is the information such as tunnel Taoist monastic name that downlink data distributes.
Step 307:MME transmit path handover request ack message is to purpose eNB.Comprising UE in message is the information such as tunnel Taoist monastic name that upstream data distributes at sign, the MME of S1 interface.
So far, the X2 handoff procedure finishes.
Embodiment bis-:
The present embodiment has been described in the X2 handoff procedure, and MME sends to purpose eNB by the information of MDT PLMN.The present embodiment is based on the process that Fig. 4 describes, and method shown in Fig. 4 can comprise the following steps:
Step 401: source eNB receives the measurement report of UE, when the measurement report according to UE, in the time of UE need to being switched to purpose eNB, source eNB is that UE selects purpose service PLMN sign (selected PLMN or Serving PLMN, perhaps Register PLMN), source eNB sends handover request message to purpose eNB, comprises new service PLMN sign and ePLMN list in message.
As improved method, further, handover request message kind can also comprise the indication whether service PLMN supports MDT, is used to indicate new service PLMN and whether has the ability of supporting MDT.The message that source eNB can send from MME knows whether this PLMN has the ability of supporting MDT, for example: the ePLMN sent by MME and bitmap.
Step 402: purpose eNB sends switching response message to source eNB.Comprise the beared information that can set up in message, purpose is to the transparent transmission container in source.Comprise the message that will send to UE in this container.
Step 403: source eNB sends switching command to UE.Comprise all information that is switched to purpose eNB needs in message, comprise enciphered message and channel parameter etc.
After step 404:UE and purpose cell synchronous, send switching response message to purpose eNB.The uplink and downlink data can start transmission.
Step 405: purpose eNB transmit path handover request message is to MME.Comprise target area sign (being called for short TAI) in message, comprise the purpose service PLMN sign (selected PLMN) of selection in TAI.
Step 406:MME transmit path handover request ack message is to purpose eNB.The information that comprises MDT PLMN in message, the information of this MDT PLMN can have two kinds of implementation methods:
The first implementation method is: comprise the PLMN list of supporting MDT, support the sign of the PLMN of MDT to be included in this list.
The second implementation method is: the indication information of the list that comprises new ePLMN and MDT PLMN, and this indication information can be a bitmap, each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.For example: can arrange first PLMN that highest order is used to indicate in the ePLMN list and whether support MDT, whether second PLMN that an inferior high position is used to indicate in the ePLMN list supports MDT, and by that analogy, 1 representative supports, 0 representative is not supported.
This step can further be optimized, and when MME finds that the purpose service PLMN of X2 switching is not identical with source service PLMN, the transmit path handover request ack message is to purpose eNB.The information that comprises MDT PLMN in message; If when MME finds that the purpose service PLMN of X2 switching is identical with source service PLMN, send existing path handover request ack message to purpose eNB, do not comprise the information of MDT PLMN.
So far, the X2 handoff procedure finishes.
Embodiment tri-:
The present embodiment has been described eNB and has been sent the process of the indication information of MDT PLMN to UE.The present embodiment is based on the process that Fig. 5 describes, and method shown in Fig. 5 can comprise the following steps:
Step 501:UE sends non-access layer information to eNB.
In following two kinds of situations, UE will send non-access layer information to eNB:
The first situation: UE enters into connection mode from idle pulley, and this process comprises:
UE sends RRC connection request message to eNB, comprises the sign of UE and the reason that RRC sets up in message;
ENB sends the RRC connection and sets up message to UE, comprises radio-resource-configuration in message;
UE sends the RRC connection setup complete message to eNB.
So far, UE enters into connection mode.
Wherein, comprise PLMN sign and the non-access layer information that UE selects in the RRC connection setup complete message.Here, non-access layer information can be to adhere to request or area update request.
The second situation: UE, in connection mode, sends up direct message transfer to eNB, in this message, comprises non-access layer information, and here, non-access layer information can be the area update request.
After step 502:eNB receives the message of step 501, forward non-access layer information to MME, here, non-access layer information can pass through S1 message initial UE information, or the up Non-Access Stratum transmission bearer of S1 message.
Step 503:MME transmission initial context foundation or descending Non-Access Stratum message transfer are to eNB, comprise service PLMN, the ePLMN list of correspondence and the indication information of MDT PLMN in message, this indication information can be a bitmap, and each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.For example: can arrange first PLMN that highest order is used to indicate in the ePLMN list and whether support MDT, 1 representative supports, 0 representative is not supported.
Also comprise non-access layer information in initial context foundation or descending Non-Access Stratum message transfer, here, non-access layer information can be to adhere to request to accept or the area update acknowledge message, and this non-access layer information comprises the ePLMN list.It is generally acknowledged that it is the same that this ePLMN list and MME send to the ePLMN list of eNB.
Step 504:eNB sends RRC message, for example RRC reconfiguration request or the descending UE that directly is transferred to, comprise the described non-access layer information of step 503 in message, the indication information that also comprises MDT PLMN in this RRC message, this indication information can be a bitmap, and each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.For example: can arrange first PLMN that highest order is used to indicate in the ePLMN list and whether support MDT, 1 representative supports, 0 representative is not supported.
If UE receives the indication information of the MDT PLMN comprised in RRC message, can give tacit consent to current service PLMN and support MDT.UE resolves the ePLMN list comprised in non-access layer information, and can know that by bitmap which ePLMN supports MDT.Like this, UE just can know whether current service PLMN and ePLMN have the ability of supporting MDT.Afterwards, can judge whether to carry out according to this ability measurement and the record of MDT, if current PLMN supports the MDT ability, UE is according to configuration, can carry out the MDT measurement, and, when by idle pulley, entering into connection mode, to eNB, report the indication that UE has preserved the MDT measurement result, eNB can indicate according to this, determines whether to obtain to the UE request record of MDT.If this current PLMN does not support the MDT ability, UE does not just carry out MDT measurement and report.
As seen from the above-described embodiment, the method of indication MDT PLMN provided by the invention, reset the relevant indication information of MDT PLMN and send to purpose eNB by source eNB, perhaps by MME, send the indication information of MDT PLMN to purpose eNB, make eNB can access correct MDT PLMN relevant information, thereby, when carrying out the X2 switching, purpose eNB can know whether service PLMN and ePLMN have the ability of supporting MDT.In addition, the present invention, by the method to UE indication MDT PLMN, makes UE can obtain correct MDT PLMN relevant information, and the MDT after making it measures and record can carry out continuously under the PLMN that supports MDT.Thereby, respectively technical solution of the present invention is applied to eNB and UE, can realize the continuity of MDT.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (8)
1. the method for the public land mobile network (PLMN) of an indication minimum road test (MDT), is characterized in that, comprising:
A, the first base station (eNB) receive the indication information of MDT PLMN from mobile management entity (MME); The indication information of this MDT PLMN is for meaning the PLMN(ePLMN that is equal to of subscriber equipment (UE)) whether PLMN corresponding to list support MDT;
B, in handoff procedure, an eNB sends to purpose eNB by the MDT ability of new service PLMN and corresponding to the indication information of the MDT PLMN of new ePLMN list;
C, an eNB receive switching response message from purpose eNB.
2. method according to claim 1 is characterized in that:
The indication information of described MDT PLMN is the bit mapping for the ePLMN list, and wherein each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.
3. method according to claim 2 is characterized in that:
If before and after switching, service PLMN changes, an eNB, according to new ePLMN list, arranges new bit mapping, is used to indicate PLMN corresponding in new ePLMN list and whether possesses the MDT ability.
4. the method for the public land mobile network (PLMN) of an indication minimum road test (MDT), is characterized in that, comprising:
A, source base station (eNB) send handover request message to purpose eNB;
B, purpose eNB send switching response message to source eNB;
C, source eNB send switching command to subscriber equipment (UE);
D, UE send handoff completion message to purpose eNB;
E, purpose eNB are to mobile management entity (MME) transmit path handover request message;
F, MME, to purpose eNB transmit path switching response message, comprise the new PLMN(ePLMN that is equal in the switching response message of described path) the information of MDT PLMN.
5. method according to claim 4 is characterized in that:
The information of described MDT PLMN is to support the PLMN sign of MDT, or the indication information of the MDT PLMN of ePLMN list and correspondence thereof.
6. according to the described method of claim 4 or 5, it is characterized in that:
The method further comprises: source eNB sends handover request message to purpose eNB, in described handover request message, comprises: the indication information whether new service PLMN sign and new service PLMN support MDT.
7. the method for the public land mobile network (PLMN) of an indication minimum road test (MDT), is characterized in that, comprising:
(eNB) sends non-access layer information to base station for A, subscriber equipment (UE);
B, eNB are transmitted to MME by described non-access layer information;
The foundation request of C, MME transmission initial context or descending Non-Access Stratum message transfer are to eNB;
D, eNB transmission Radio Resource (RRC) reconfiguration message or descending direct message transfer, to UE, comprise indication information and the non-access layer information of MDT PLMN in message; The indication information of described MDT PLMN is for meaning the PLMN(ePLMN that is equal to of UE) whether PLMN corresponding to list support MDT.
8. method according to claim 7 is characterized in that:
The indication information of described MDT PLMN is the bit mapping for the ePLMN list, and wherein each is respectively used to indicate PLMN corresponding in the ePLMN list whether to possess the MDT ability.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333279A (en) * | 2016-04-29 | 2017-11-07 | 中兴通讯股份有限公司 | Minimize road measuring method, base station and NMS |
| CN111385830A (en) * | 2018-12-29 | 2020-07-07 | 华为技术有限公司 | Communication method and device |
| CN111757373A (en) * | 2019-03-29 | 2020-10-09 | 华为技术有限公司 | Communication method, device and system |
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2012
- 2012-05-16 CN CN2012101524575A patent/CN103428761A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333279A (en) * | 2016-04-29 | 2017-11-07 | 中兴通讯股份有限公司 | Minimize road measuring method, base station and NMS |
| CN111385830A (en) * | 2018-12-29 | 2020-07-07 | 华为技术有限公司 | Communication method and device |
| CN111757373A (en) * | 2019-03-29 | 2020-10-09 | 华为技术有限公司 | Communication method, device and system |
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Application publication date: 20131204 |