CN101998329B - Method, equipment and system for ensuring continuity of emergency services - Google Patents

Method, equipment and system for ensuring continuity of emergency services Download PDF

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Publication number
CN101998329B
CN101998329B CN2009100909422A CN200910090942A CN101998329B CN 101998329 B CN101998329 B CN 101998329B CN 2009100909422 A CN2009100909422 A CN 2009100909422A CN 200910090942 A CN200910090942 A CN 200910090942A CN 101998329 B CN101998329 B CN 101998329B
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Prior art keywords
urgency traffic
base station
source base
target cell
subscriber equipment
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CN101998329A (en
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张娟
徐晖
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN2009100909422A priority Critical patent/CN101998329B/en
Priority to PCT/CN2010/076066 priority patent/WO2011020427A1/en
Publication of CN101998329A publication Critical patent/CN101998329A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a method for ensuring continuity of emergency services, which comprises the following steps that: a mobile management entity receives a switching request message or emergency service ability judgment request from source base station equipment; the mobile management entity judges whether a target cell supports the emergency services of user equipment or not on the support capacity of the emergency services, registration information of the user equipment and TAI information and/or RAI information of the target cell according to a network according to the TAI information and/or the RAI information stored in the mobile management entity; if the target cell supports the emergency services of the user equipment, the mobile management entity notifies a network side to execute a normal switching flow; and if the target cell does not support the emergency services of the user equipment, the mobile management entity notifies the source base station equipment to reselect a target cell for the user equipment. The embodiment of the invention ensures the continuity of the emergency services.

Description

The successional method, apparatus and system of a kind of assurance urgency traffic
Technical field
The present invention relates to the mobile communication technology field, particularly relate to the successional method, apparatus and system of a kind of assurance urgency traffic.
Background technology
Emergency bearing is professional for providing support IMS (IP Multimedia Subsystem, internet protocol multi-media sub-system) emergent session, the UE that goes for normally adhering to (User Equipment, subscriber equipment) also goes for being in the UE of unrestricted model state.Professional and the local configuration of the emergency bearing of UE is relevant, and is irrelevant with CAMEL-Subscription-Information.When UE was in the limit service pattern, MME judged that according to the rank of supporting the urgency traffic pattern emergency attached request of accepting UE still refuses the emergency attached request of UE.The limit service pattern refers to the only state of the UE of permission initiation urgent call, when UE can not find that a suitable cell (proper cell) is resident, perhaps UE does not insert SIM (Subscriber IdentityModule, user identification module) card, when perhaps UE has received the response message (as be designated as " illegal UE ") of some position registration, UE attempts resident PLMN (the Public Land Mobile-communication Network that ignores this residential quarter to a residential quarter, public land mobile communication network) during id (sign), UE enters the limit service pattern.
At present, the type of the urgent call of the following four kinds of network supports of protocol definition:
(1) only support effective UE (Valid UEs only): network is not supported the UE of limit service pattern, has only effective CAMEL-Subscription-Information, authentication and authorizes successful normal UE just to allow its initiation urgent call in attaching process.Normal UE must be attached to network earlier and initiate PDN (Public Data Networks, public data network) connection request process when UE detects the IMS emergent session.
(2) only support the UE (Only UEs that are authenticated areallowed) that authentication allows: UE must have effective IMSI (International Mobile Subscriber Identity, international mobile subscriber identity), UE authentication success, but may be positioned at the residential quarter of restriction service and be in the limit service state.The UE of failed authentication then can be refused by network.
(3) only support UE (IMSI required, authentication optional) by IMSI: UE must have IMSI, even failed authentication, UE still can be linked into network, preserves the not IMSI of authentication success in the network.Network uses IMEI (International Mobile Equipment Identity, International Mobile Equipment Identity sign indicating number) sign UE, and has only the UE of IMEI to be refused by network.
(4) all UE support (All UEs are allowed): except the UE of authentication success, but the UE of IMSI failed authentication is arranged and have only the UE of IMEI also to allow to support urgency traffic.If but UE provides IMSI failed authentication, network is still preserved the not IMSI of authentication success, and this moment, network used IMEI sign UE.
For the UE that normally adheres to, MME (Mobile Management Entity, mobile management entity) returning to the attach accept of UE (adhering to acceptance) message and follow-up generation TAU (Tracking AreaUpdate, tracking area update) in sending to TAU accept (tracking area update acceptance) message of UE, network can carry an Emergency Service Support indicator (urgency traffic support sign) during process, be used to indicate distributing to network in the TAI list of UE (Tracking Area Indicator list, the tracing area identification list) scope and whether support the urgency traffic of this UE.If urgency traffic is supported in network indication, UE can connect the process of setting up and sets up and urgent being connected of PDN by initiating new PDN.
If UE is in the limit service pattern, and will initiate urgency traffic the time, UE directly initiates the emergency attached process, and UE can be designated as urgency traffic in Attach Request message.If the urgent call of network support UE then be that UE sets up urgent PDN and connects according to the urgent configuration data of MME of this locality configuration.If network is not supported the urgent call of UE, then MME can refuse the request of adhering to of this UE.
When the network support urgency traffic, will can not use mobile and the access restriction for urgent call.When the carrying that is used for urgency traffic is set up, the ARP of emergency bearing (Allocation and RetentionPriority, distribute and keep priority) will to indicate this carrying to E-UTRAN (Evolved Universal TerrestrialRadio Access Network, evolved global terrestrial radio Access Network) be for urgency traffic.Source E-UTRAN also needs to consider this indication when the select target residential quarter when switching.When UE switches to a restricted cell, objective network will only be set up the urgency traffic carrying, and the APN of all non-emergent business (Access Point Name, APN) connection will be deleted.
The inventor is in realizing process of the present invention, and there are the following problems at least to find prior art:
The urgency traffic that network provides is determined that by this locality configuration and carrier policy irrelevant with CAMEL-Subscription-Information, at different TA (Tracking Area, tracing area), the classification of the urgency traffic of network support may be different.When the UE of urgency traffic connection switches, owing to carry out the ability that the sourceeNB (source node B) of switch decision process does not know objective network support urgency traffic, do not know that UE is linked into the state of network yet, for example UE normally adheres to or emergency attached, whether IMSI information is arranged, and whether IMSI is by successful authentication etc.When the new Target cell that switches to as UE is not supported the urgency traffic carrying of UE, can cause the release of urgency traffic carrying, influence the continuity of urgency traffic.
Summary of the invention
The embodiment of the invention provides a kind of assurance urgency traffic successional method, apparatus and system, has guaranteed the continuity of urgency traffic in handoff procedure.
The embodiment of the invention proposes the successional method of a kind of assurance urgency traffic, may further comprise the steps:
The mobile management entity reception is judged request from handover request message or the urgency traffic ability of source base station equipment, and all carrying described source base station equipment in described handover request message and the described urgency traffic ability judgement request is tracing area sign TAI information and/or the Routing Area identification RAI information of the Target cell of subscriber equipment selection;
The TAI information that described mobile management entity is preserved according to self and/or the network of RAI information correspondence are to the tenability of urgency traffic, the log-on message of described subscriber equipment, and the TAI information of described Target cell and/or RAI information, judge whether described Target cell supports the urgency traffic of described subscriber equipment;
If described Target cell is supported the urgency traffic of described subscriber equipment, then described mobile management entity informing network side is carried out normal switching flow; If described Target cell is not supported the urgency traffic of described subscriber equipment, then described mobile management entity notifies described source base station equipment to be described subscriber equipment select target residential quarter again.
Preferably, described mobile management entity receives from before the handover request message of source base station equipment or the urgency traffic ability judgement request, also comprises:
The ability information of all TAI in described mobile management entity under the same public land mobile communication network PLMN of configuration and the network support urgency traffic of RAI scope.
Preferably, described mobile management entity reception is judged before the request from the urgency traffic ability of source base station equipment, is also comprised:
When subscriber equipment switched, described source base station equipment was that described subscriber equipment is selected described Target cell, and judged that carrying out the S1 interface switches still X2 interface switching;
When carrying out the X2 interface switching, described source base station equipment judges that described Target cell and cell-of-origin do not belong to same TAI.
Preferably, described source base station equipment judges that carrying out the S1 interface switches after the still X2 interface switching, also comprises:
When carrying out the X2 interface switching, if described Target cell and cell-of-origin belong to same TAI, described source base station equipment is carried out normal X2 interface switching flow.
Preferably, when carrying out the X2 interface switching, described mobile management entity informing network side is carried out normal switching flow, specifically comprises:
Described mobile management entity returns the indication of urgency traffic ability to described source base station equipment, make described source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
Preferably, when carrying out the X2 interface switching, described mobile management entity notifies described source base station equipment to be described subscriber equipment select target residential quarter again, specifically comprises:
Described mobile management entity returns the indication of urgency traffic ability to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again, carry the information that described Target cell is not supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
Preferably, described source base station equipment judges that carrying out the S1 interface switches after the still X2 interface switching, also comprises:
When carrying out the switching of S1 interface, described mobile management entity is the source mobile management entity, and described source base station equipment sends handover request message to described source mobile management entity.
Preferably, when carrying out the switching of S1 interface, described mobile management entity informing network side is carried out normal switching flow, specifically comprises:
Described source mobile management entity sends handover request message to target mobile management entity or professional general packet wireless service support node SGSN, carries out normal S1 interface switching flow.
Preferably, when carrying out the switching of S1 interface, described mobile management entity notifies described source base station equipment to be described subscriber equipment select target residential quarter again, specifically comprises:
Described source mobile management entity returns switch failure information to described source base station equipment, indicate described Target cell not support the urgency traffic of described subscriber equipment to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again.
The embodiment of the invention also proposes a kind of mobile management entity, comprising:
Receiver module, be used for reception and judge request from handover request message or the urgency traffic ability of source base station equipment, all carry TAI information and/or the RAI information that described source base station equipment is the Target cell of subscriber equipment selection in described handover request message and the described urgency traffic ability judgement request;
Judge module, be used for network according to the TAI information of self preserving and/or RAI information correspondence to the tenability of urgency traffic, the log-on message of described subscriber equipment, and TAI information and/or the RAI information of the Target cell that receives of described receiver module, judge whether described Target cell supports the urgency traffic of described subscriber equipment;
Notification module is used for when described judge module judges that described Target cell is supported the urgency traffic of described subscriber equipment, and the informing network side is carried out normal switching flow; When described judge module judges that described Target cell is not supported the urgency traffic of described subscriber equipment, notify described source base station equipment to be described subscriber equipment select target residential quarter again.
Preferably, described mobile management entity also comprises:
Configuration module is used for the ability information of the network support urgency traffic of all TAI under the same PLMN of configuration and RAI scope.
Preferably, when carrying out the X2 interface switching,
Described notification module, concrete being used for when described judge module judges that described Target cell is supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication;
When described judge module judges that described Target cell is not supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again, carry the information that described Target cell is not supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
Preferably, when carrying out the switching of S1 interface,
Described notification module, concrete being used for when described judge module judges that described Target cell is supported the urgency traffic of described subscriber equipment, send handover request message to target mobile management entity or SGSN, carry out normal S1 interface switching flow;
When described judge module judges that described Target cell is not supported the urgency traffic of described subscriber equipment, return switch failure information to described source base station equipment, indicate described Target cell not support the urgency traffic of described subscriber equipment to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again.
The embodiment of the invention also proposes the successional system of a kind of assurance urgency traffic, comprising:
Mobile management entity, be used for reception and judge request from handover request message or the urgency traffic ability of source base station equipment, all carrying described source base station equipment in described handover request message and the described urgency traffic ability judgement request is tracing area sign TAI information and/or the Routing Area identification RAI information of the Target cell of subscriber equipment selection; The TAI information of preserving according to self and/or the network of RAI information correspondence are to the tenability of urgency traffic, the log-on message of described subscriber equipment, and the TAI information of described Target cell and/or RAI information, judge whether described Target cell supports the urgency traffic of described subscriber equipment; When described Target cell was supported the urgency traffic of described subscriber equipment, the informing network side was carried out normal switching flow; When described Target cell is not supported the urgency traffic of described subscriber equipment, notify described source base station equipment to be described subscriber equipment select target residential quarter again;
Source base station equipment is used for sending handover request message or urgency traffic ability judgement request to described mobile management entity.
Preferably, described mobile management entity also is used for the ability information of the network support urgency traffic of all TAI under the same PLMN of configuration and RAI scope.
Preferably, described source base station equipment also is used for when subscriber equipment switches, and for described subscriber equipment is selected described Target cell, and judges that execution S1 interface switches or X2 interface switches;
When carrying out X2 interface and switch, judge whether described Target cell and cell-of-origin belong to same TAI, when described Target cell and described cell-of-origin belong to same TAI, carry out normal X2 interface switching flow.
Preferably, when carrying out the X2 interface switching,
Described source base station equipment, concrete being used for sends urgency traffic ability judgement request to described mobile management entity;
Described mobile management entity, concrete being used for when described Target cell is supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication;
When described Target cell is not supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again, carry the information that described Target cell is not supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
Preferably, when carrying out the switching of S1 interface,
Described source base station equipment, concrete being used for sends handover request message to described mobile management entity;
Described mobile management entity, concrete being used for when described Target cell is supported the urgency traffic of described subscriber equipment, send handover request message to target mobile management entity or SGSN, carry out normal S1 interface switching flow;
When described Target cell is not supported the urgency traffic of described subscriber equipment, return switch failure information to described source base station equipment, indicate described Target cell not support the urgency traffic of described subscriber equipment to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again.
The technical scheme of the embodiment of the invention has the following advantages, by obtaining Target cell to the tenability of the urgency traffic of subscriber equipment, avoided when UE switches to new residential quarter, owing to new residential quarter does not support the urgency traffic of UE to cause the interrupted problem of urgency traffic, guaranteed the continuity of urgency traffic in switching.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the successional method flow diagram of a kind of assurance urgency traffic in the embodiment of the invention one;
Fig. 2 is the successional method flow diagram of a kind of assurance urgency traffic in the embodiment of the invention two;
Fig. 3 is a kind of mobile management entity structural representation in the embodiment of the invention three;
Fig. 4 is the successional system configuration schematic diagram of a kind of assurance urgency traffic in the embodiment of the invention four;
Fig. 5 is the successional method flow diagram of a kind of assurance urgency traffic in the embodiment of the invention five.
Embodiment
The embodiment of the invention can be when network design, the urgency traffic ability that all cell deployment under the same PLMN are identical, and all TAI under the same PLMN that disposes among the MME are all identical with the ability of the network support urgency traffic of RAI scope; Also can in MME, dispose the different situation of ability of the network support urgency traffic of all TAI under the same PLMN and RAI scope.
Particularly, because present IMS urgency traffic is not supported the switching between the inter PLMN, therefore when network design, can be at the network design of same PLMN identical urgency traffic tenability, in attach (adhering to) process and TAU process, receive the indication of support urgency traffic as UE after, UE switches in PLMN inside, and objective network all can be supported the urgency traffic of UE; If UE receives network when not supporting the indication of urgency traffic in attach process or TAU process, UE can independently select resident residential quarter to other PLMN.
In addition, MME can indicate the urgency traffic of whether supporting UE in the TAI list scope of distributing to UE in attach process and TAU process, in the configuration information of MME, in preserving MME pool (mobile management entity pond) the ability information of the support urgency traffic of all TAI, also to preserve the TAI that do not belong to this MME pool under the same PLMN and the interior network of RAI scope to the tenability information of urgency traffic.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, the successional method flow diagram of a kind of assurance urgency traffic in the embodiment of the invention one may further comprise the steps:
Step 101, mobile management entity receive from the handover request message of source base station equipment or urgency traffic ability judges request.
Wherein, all carry TAI (the Tracking Area Indicator that source base station equipment is the Target cell of subscriber equipment selection in handover request message and the urgency traffic ability judgement request, the tracing area sign) information and/or RAI (Routing Area Identification, Routing Area identification) information.
Mobile management entity receives from before the handover request message of source base station equipment or the urgency traffic ability judgement request, also comprises:
The ability information of all TAI in mobile management entity under the configuration PLMN and the network support urgency traffic of RAI scope;
When subscriber equipment switched, source base station equipment was subscriber equipment select target residential quarter, and judged that carrying out the S1 interface switches still X2 interface switching;
When carrying out the switching of S1 interface, mobile management entity is the source mobile management entity, and source base station equipment sends handover request message to the source mobile management entity.
When carrying out X2 interface and switch, source base station equipment is judged when Target cell and cell-of-origin do not belong to same TAI, is sent the urgency traffic ability to mobile management entity and judge request; If Target cell and cell-of-origin belong to same TAI, source base station equipment is carried out normal X2 interface switching flow.
Step 102, the TAI information that mobile management entity is preserved according to self and/or the network of RAI information correspondence are to the tenability of urgency traffic, the log-on message of subscriber equipment, and the TAI information of Target cell and/or RAI information, judge whether Target cell supports the urgency traffic of subscriber equipment.
If Target cell is supported the urgency traffic of subscriber equipment, then execution in step 103; If Target cell is not supported the urgency traffic of subscriber equipment, then execution in step 104.
Step 103, mobile management entity informing network side is carried out normal switching flow.
Particularly, when carrying out the X2 interface switching, mobile management entity returns the indication of urgency traffic ability to source base station equipment, make source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in this urgency traffic ability indication.
When carrying out the switching of S1 interface, the source mobile management entity sends handover request message to target mobile management entity or SGSN (Serving GPRS Support Node, professional general packet wireless service support node), carries out normal S1 interface switching flow.
Step 104, mobile management entity notification source base station equipment are subscriber equipment select target residential quarter again.
Particularly, when carrying out the switching of S1 interface, mobile management entity returns switch failure information to source base station equipment, does not support the urgency traffic of subscriber equipment to this source base station equipment indicating target residential quarter, makes source base station equipment be subscriber equipment select target residential quarter again.
When carrying out the X2 interface switching, mobile management entity returns the indication of urgency traffic ability to source base station equipment, make this source base station equipment be subscriber equipment select target residential quarter again, carry the information that Target cell is not supported the urgency traffic of subscriber equipment in this urgency traffic ability indication.
The technical scheme of the embodiment of the invention has the following advantages, by obtaining Target cell to the tenability of the urgency traffic of subscriber equipment, avoided when UE switches to new residential quarter, owing to new residential quarter does not support the urgency traffic of UE to cause the interrupted problem of urgency traffic, guaranteed the continuity of urgency traffic in switching.
As shown in Figure 2, the successional method flow diagram of a kind of assurance urgency traffic in the embodiment of the invention two may further comprise the steps:
Step 201, when UE switches, the Target cell that source eNB selects this UE to switch to.
Step 202, source eNB judges that carrying out the switching of S1 interface still carries out the X2 interface switching, switches if carry out X2 interface, then execution in step 203; Switch if carry out the S1 interface, then execution in step 209.
Step 203, source eNB judges whether Target cell and cell-of-origin belong to same TAI, if belong to same TAI, then execution in step 204; If do not belong to same TAI, then execution in step 205;
Step 204, source eNB sends handover request to target eNB (target node b), carries out normal X2 interface switching flow.
Step 205, source eNB sends the urgency traffic ability to MME and judges request.
Wherein, the urgency traffic ability is judged TAI and/or the RAI information of carrying Target cell in the request.
Step 206, MME returns the indication of urgency traffic ability to source eNB, if the content of this urgency traffic ability indication is the urgency traffic that Target cell is supported UE, then execution in step 207; If the content of this urgency traffic ability indication is the urgency traffic that Target cell is not supported UE, then execution in step 208.
Particularly, MME according to the target TAI of the registration scenarios of UE and preservation and/or/RAI information to the tenability of urgency traffic judge the urgency traffic ability judge the Chinese target TAI of request and/or/whether the Target cell of RAI information correspondence can provide urgency traffic to UE, MME in the urgency traffic ability indication of returning to the TAI of UE indication inquiry and/or/can the Target cell of RAI information correspondence provide urgency traffic to UE.
Step 207, source eNB sends handover request to target eNB, carries out normal X2 interface handoff procedure.
Step 208, source eNB is that UE reselects Target cell.
Step 209, source eNB sends handover request message to source MME.
Wherein, carry the cell ID (cell ID) of Target cell and TAI and/or the RAI under the Target cell in the handover request message.
Step 210, source MME judges whether Target cell supports the urgency traffic of UE.If support that then execution in step 211; If do not support, then execution in step 212.
Particularly, source MME judges to the tenability of urgency traffic whether Target cell supports the urgency traffic of UE according to the log-on message of UE and the TAI of preservation and/or the Target cell of RAI information correspondence.
Step 211, source MME sends handover request to target MME (target mobile management entity)/SGSN, carries out normal S1 interface handoff procedure.
Step 212, source MME returns switch failure information to source eNB.
Wherein, carry the handoff failure reason in the switch failure information, the urgency traffic carrying of UE can not be supported in the indicating target residential quarter.After executing this step, continue execution in step 208.
Need to prove that the method in the embodiment of the invention can be adjusted each step order according to actual needs.
Method in the embodiment of the invention is suitable for too for 3G system and the system that has H (e) NB to dispose, and 3G system and have switching flow and S1 switching flow step in the system that H (e) NB disposes similar does not repeat them here.
The technical scheme of the embodiment of the invention has the following advantages, by obtaining Target cell to the tenability of the urgency traffic of subscriber equipment, avoided when UE switches to new residential quarter, owing to new residential quarter does not support the urgency traffic of UE to cause the interrupted problem of urgency traffic, guaranteed the continuity of urgency traffic in switching.
As shown in Figure 3, a kind of mobile management entity structural representation in the embodiment of the invention three comprises:
Receiver module 310, be used for reception and judge request from handover request message or the urgency traffic ability of source base station equipment, all carry TAI information and/or the RAI information that source base station equipment is the Target cell of subscriber equipment selection in this handover request message and the urgency traffic ability judgement request.
Judge module 320, be used for network according to the TAI information of self preserving and/or RAI information correspondence to the tenability of urgency traffic, the log-on message of subscriber equipment, and TAI information and/or the RAI information of the Target cell that receives of receiver module 310, judge whether Target cell supports the urgency traffic of subscriber equipment.
Notification module 330 is used for when judge module 320 judges that Target cell is supported the urgency traffic of subscriber equipment, and the informing network side is carried out normal switching flow; When judge module 320 judged that Target cell is not supported the urgency traffic of subscriber equipment, the notification source base station equipment was subscriber equipment select target residential quarter again.
When carrying out the X2 interface switching, above-mentioned notification module 330, concrete being used for when judge module 320 judges that Target cell is supported the urgency traffic of subscriber equipment, return the indication of urgency traffic ability to source base station equipment, make source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that Target cell is supported the urgency traffic of subscriber equipment in the indication of urgency traffic ability;
When judge module 320 judges that Target cell is not supported the urgency traffic of subscriber equipment, return the indication of urgency traffic ability to source base station equipment, make source base station equipment be subscriber equipment select target residential quarter again, carry the information that Target cell is not supported the urgency traffic of subscriber equipment in the indication of urgency traffic ability.
When carrying out the switching of S1 interface, mobile management entity is the source mobile management entity, above-mentioned notification module 330, concrete being used for when judge module 320 judges that Target cell is supported the urgency traffic of subscriber equipment, send handover request message to target mobile management entity or SGSN, carry out normal S1 interface switching flow;
When judge module 320 judges that Target cell is not supported the urgency traffic of subscriber equipment, return switch failure information to source base station equipment, do not support the urgency traffic of subscriber equipment to source base station equipment indicating target residential quarter, make source base station equipment be subscriber equipment select target residential quarter again.
Configuration module 340 is used for the ability information of the network support urgency traffic of all TAI under the same PLMN of configuration and RAI scope.
The technical scheme of the embodiment of the invention has the following advantages, by obtaining Target cell to the tenability of the urgency traffic of subscriber equipment, avoided when UE switches to new residential quarter, owing to new residential quarter does not support the urgency traffic of UE to cause the interrupted problem of urgency traffic, guaranteed the continuity of urgency traffic in switching.
As shown in Figure 4, the successional system configuration schematic diagram of a kind of assurance urgency traffic in the embodiment of the invention four comprises mobile management entity 410 and source base station equipment 420, wherein,
Mobile management entity 410, be used for reception and judge request from handover request message or the urgency traffic ability of source base station equipment 420, described handover request message and described urgency traffic ability judge that all carrying source base station equipment 420 in the request is TAI information and/or the RAI information of the Target cell of subscriber equipment selection; The TAI information of preserving according to self and/or the network of RAI information correspondence are to the tenability of urgency traffic, the log-on message of described subscriber equipment, and the TAI information of described Target cell and/or RAI information, judge whether described Target cell supports the urgency traffic of described subscriber equipment; When described Target cell was supported the urgency traffic of described subscriber equipment, the informing network side was carried out normal switching flow; When described Target cell is not supported the urgency traffic of described subscriber equipment, notify described source base station equipment to be described subscriber equipment select target residential quarter again;
Source base station equipment 420 is used for sending handover request message or urgency traffic ability judgement request to mobile management entity 410.
Above-mentioned mobile management entity 410 also is used for the ability information of the network support urgency traffic of all TAI under the same PLMN of configuration and RAI scope.
Above-mentioned source base station equipment 420 also is used for when subscriber equipment switches, and for described subscriber equipment is selected described Target cell, and judges that execution S1 interface switches or X2 interface switches;
When carrying out X2 interface and switch, judge whether described Target cell and cell-of-origin belong to same TAI, when described Target cell and described cell-of-origin belong to same TAI, carry out normal X2 interface switching flow.
When carrying out the X2 interface switching, above-mentioned source base station equipment 420 is specifically asked for judging to mobile management entity 410 transmission urgency traffic abilities;
Above-mentioned mobile management entity 410, concrete being used for when described Target cell is supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to source base station equipment 420, make source base station equipment 420 send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication;
When described Target cell is not supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to source base station equipment 420, make source base station equipment 420 be described subscriber equipment select target residential quarter again, carry the information that described Target cell is not supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
When carrying out the switching of S1 interface, above-mentioned source base station equipment 420, concrete being used for sends the handover request message to mobile management entity 410;
Above-mentioned mobile management entity 410, concrete being used for when described Target cell is supported the urgency traffic of described subscriber equipment, send handover request message to target mobile management entity or SGSN, carry out normal S1 interface switching flow;
When described Target cell is not supported the urgency traffic of described subscriber equipment, return switch failure information to source base station equipment 420, indicate described Target cell not support the urgency traffic of described subscriber equipment to source base station equipment 420, make source base station equipment 420 be described subscriber equipment select target residential quarter again.
The technical scheme of the embodiment of the invention has the following advantages, by obtaining Target cell to the tenability of the urgency traffic of subscriber equipment, avoided when UE switches to new residential quarter, owing to new residential quarter does not support the urgency traffic of UE to cause the interrupted problem of urgency traffic, guaranteed the continuity of urgency traffic in switching.
As shown in Figure 5, the successional method flow diagram of a kind of assurance urgency traffic in the embodiment of the invention five may further comprise the steps:
Step 501 when network design, is disposed identical urgency traffic tenability with the all-network under the same PLMN.
All-network under the same PLMN is disposed after the identical urgency traffic tenability, can also in mobile management entity, be disposed the ability information of all TAI under same PLMN urgency traffic identical with the network support of RAI scope.
Step 502, subscriber equipment switches in the inside of PLMN.
Because present IMS urgency traffic is not supported the switching between the inter PLMN, therefore when network design, can be at the network design of same PLMN identical urgency traffic tenability, receive the indication of support urgency traffic in attach process and TAU process as UE after, UE switches in PLMN inside.
In addition, in attach process or TAU process, subscriber equipment receives after network do not support the indication of urgency traffic, can independently select resident residential quarter outside the PLMN at the network place of not supporting urgency traffic, i.e. the residential quarter of other PLMN.
The technical scheme of the embodiment of the invention has the following advantages, by the all-network under the same PLMN is disposed identical urgency traffic tenability, avoided when UE switches to new residential quarter, owing to new residential quarter does not support the urgency traffic of UE to cause the interrupted problem of urgency traffic, guaranteed the continuity of urgency traffic in switching.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of above-described embodiment can be integrated in one, and also can separate deployment, can merge into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number does not represent the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (18)

1. one kind guarantees the successional method of urgency traffic, it is characterized in that, may further comprise the steps:
The mobile management entity reception is judged request from handover request message or the urgency traffic ability of source base station equipment, and all carrying described source base station equipment in described handover request message and the described urgency traffic ability judgement request is tracing area sign TAI information and/or the Routing Area identification RAI information of the Target cell of subscriber equipment selection;
The TAI information that described mobile management entity is preserved according to self and/or the network of RAI information correspondence are to the tenability of urgency traffic, the log-on message of described subscriber equipment, and the TAI information of described Target cell and/or RAI information, judge whether described Target cell supports the urgency traffic of described subscriber equipment;
If described Target cell is supported the urgency traffic of described subscriber equipment, then described mobile management entity informing network side is carried out normal switching flow; If described Target cell is not supported the urgency traffic of described subscriber equipment, then described mobile management entity notifies described source base station equipment to be described subscriber equipment select target residential quarter again.
2. the method for claim 1 is characterized in that, described mobile management entity receives from before the handover request message of source base station equipment or the urgency traffic ability judgement request, also comprises:
The ability information of all TAI in described mobile management entity under the same public land mobile communication network PLMN of configuration and the network support urgency traffic of RAI scope.
3. the method for claim 1 is characterized in that, described mobile management entity reception is judged before the request from the urgency traffic ability of source base station equipment, also comprised:
When subscriber equipment switched, described source base station equipment was that described subscriber equipment is selected described Target cell, and judged that carrying out the S1 interface switches still X2 interface switching;
When carrying out the X2 interface switching, described source base station equipment judges that described Target cell and cell-of-origin do not belong to same TAI.
4. method as claimed in claim 3 is characterized in that, described source base station equipment judges that carrying out the S1 interface switches after the still X2 interface switching, also comprises:
When carrying out the X2 interface switching, if described Target cell and cell-of-origin belong to same TAI, described source base station equipment is carried out normal X2 interface switching flow.
5. method as claimed in claim 3 is characterized in that, when carrying out the X2 interface switching, described mobile management entity informing network side is carried out normal switching flow, specifically comprises:
Described mobile management entity returns the indication of urgency traffic ability to described source base station equipment, make described source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
6. method as claimed in claim 3 is characterized in that, when carrying out the X2 interface switching, described mobile management entity notifies described source base station equipment to be described subscriber equipment select target residential quarter again, specifically comprises:
Described mobile management entity returns the indication of urgency traffic ability to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again, carry the information that described Target cell is not supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
7. method as claimed in claim 3 is characterized in that, described source base station equipment judges that carrying out the S1 interface switches after the still X2 interface switching, also comprises:
When carrying out the switching of S1 interface, described mobile management entity is the source mobile management entity, and described source base station equipment sends handover request message to described source mobile management entity.
8. method as claimed in claim 7 is characterized in that, when carrying out the switching of S1 interface, described mobile management entity informing network side is carried out normal switching flow, specifically comprises:
Described source mobile management entity sends handover request message to target mobile management entity or professional general packet wireless service support node SGSN, carries out normal S1 interface switching flow.
9. method as claimed in claim 7 is characterized in that, when carrying out the switching of S1 interface, described mobile management entity notifies described source base station equipment to be described subscriber equipment select target residential quarter again, specifically comprises:
Described source mobile management entity returns switch failure information to described source base station equipment, indicate described Target cell not support the urgency traffic of described subscriber equipment to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again.
10. a mobile management entity is characterized in that, comprising:
Receiver module, be used for reception and judge request from handover request message or the urgency traffic ability of source base station equipment, all carry TAI information and/or the RAI information that described source base station equipment is the Target cell of subscriber equipment selection in described handover request message and the described urgency traffic ability judgement request;
Judge module, be used for network according to the TAI information of self preserving and/or RAI information correspondence to the tenability of urgency traffic, the log-on message of described subscriber equipment, and TAI information and/or the RAI information of the Target cell that receives of described receiver module, judge whether described Target cell supports the urgency traffic of described subscriber equipment;
Notification module is used for when described judge module judges that described Target cell is supported the urgency traffic of described subscriber equipment, and the informing network side is carried out normal switching flow; When described judge module judges that described Target cell is not supported the urgency traffic of described subscriber equipment, notify described source base station equipment to be described subscriber equipment select target residential quarter again.
11. as mobile management entity as described in the claim 10, it is characterized in that, also comprise:
Configuration module is used for the ability information of the network support urgency traffic of all TAI under the same PLMN of configuration and RAI scope.
12. mobile management entity as claimed in claim 10 is characterized in that, when carrying out the X2 interface switching,
Described notification module, concrete being used for when described judge module judges that described Target cell is supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication;
When described judge module judges that described Target cell is not supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again, carry the information that described Target cell is not supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
13. mobile management entity as claimed in claim 10 is characterized in that, when carrying out the switching of S1 interface, described mobile management entity is the source mobile management entity,
Described notification module, concrete being used for when described judge module judges that described Target cell is supported the urgency traffic of described subscriber equipment, send handover request message to target mobile management entity or SGSN, carry out normal S1 interface switching flow;
When described judge module judges that described Target cell is not supported the urgency traffic of described subscriber equipment, return switch failure information to described source base station equipment, indicate described Target cell not support the urgency traffic of described subscriber equipment to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again.
14. one kind guarantees the successional system of urgency traffic, it is characterized in that, comprising:
Mobile management entity, be used for reception and judge request from handover request message or the urgency traffic ability of source base station equipment, all carrying described source base station equipment in described handover request message and the described urgency traffic ability judgement request is tracing area sign TAI information and/or the Routing Area identification RAI information of the Target cell of subscriber equipment selection; The TAI information of preserving according to self and/or the network of RAI information correspondence are to the tenability of urgency traffic, the log-on message of described subscriber equipment, and the TAI information of described Target cell and/or RAI information, judge whether described Target cell supports the urgency traffic of described subscriber equipment; When described Target cell was supported the urgency traffic of described subscriber equipment, the informing network side was carried out normal switching flow; When described Target cell is not supported the urgency traffic of described subscriber equipment, notify described source base station equipment to be described subscriber equipment select target residential quarter again;
Source base station equipment is used for sending handover request message or urgency traffic ability judgement request to described mobile management entity.
15. system as claimed in claim 14 is characterized in that,
Described mobile management entity also is used for the ability information of the network support urgency traffic of all TAI under the same PLMN of configuration and RAI scope.
16. system as claimed in claim 14 is characterized in that,
Described source base station equipment also is used for when subscriber equipment switches, and for described subscriber equipment is selected described Target cell, and judges that execution S1 interface switches or X2 interface switches;
When carrying out X2 interface and switch, judge whether described Target cell and cell-of-origin belong to same TAI, when described Target cell and described cell-of-origin belong to same TAI, carry out normal X2 interface switching flow.
17. system as claimed in claim 16 is characterized in that, when carrying out the X2 interface switching,
Described source base station equipment, concrete being used for sends urgency traffic ability judgement request to described mobile management entity;
Described mobile management entity, concrete being used for when described Target cell is supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment send handover request to target BS equipment, carry out normal X2 interface and switch, carry the information that described Target cell is supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication;
When described Target cell is not supported the urgency traffic of described subscriber equipment, return the indication of urgency traffic ability to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again, carry the information that described Target cell is not supported the urgency traffic of described subscriber equipment in the described urgency traffic ability indication.
18. system as claimed in claim 16 is characterized in that, when carrying out the switching of S1 interface,
Described source base station equipment, concrete being used for sends handover request message to described mobile management entity;
Described mobile management entity, concrete being used for when described Target cell is supported the urgency traffic of described subscriber equipment, send handover request message to target mobile management entity or SGSN, carry out normal S1 interface switching flow;
When described Target cell is not supported the urgency traffic of described subscriber equipment, return switch failure information to described source base station equipment, indicate described Target cell not support the urgency traffic of described subscriber equipment to described source base station equipment, make described source base station equipment be described subscriber equipment select target residential quarter again.
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