CN101389130A - Core network entity and switching method based on VCC speech calling - Google Patents
Core network entity and switching method based on VCC speech calling Download PDFInfo
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- CN101389130A CN101389130A CNA2007101538806A CN200710153880A CN101389130A CN 101389130 A CN101389130 A CN 101389130A CN A2007101538806 A CNA2007101538806 A CN A2007101538806A CN 200710153880 A CN200710153880 A CN 200710153880A CN 101389130 A CN101389130 A CN 101389130A
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Abstract
The invention discloses a switching method based VCC voice call in order to the problem of technique in prior art that switching trigger message is sent by an access network entity such as eNodeB, thus making flow of triggering UE starting region conversion in VCC voice call switching process complex. The method comprises that: the entity for managing mobility in core network receives a switching request message triggered by an access network entity; the entity for managing mobility in core network sends VCC switching trigger message to the UE; the UE triggers VCC region switching according to the VCC region conversion triggering message. The entity for managing mobility in core network directly sends the switching triggering message to the UE, therefore flow of triggering UE start region conversion in VCC voice call switching process is simplified.
Description
Technical field
The invention belongs to field of wireless communications systems, particularly a kind of core network entity reaches the changing method based on VCC (Voice Call Continiuty continuous voice call technology) audio call.
Background technology
2G/3G (2rd Generation/3rd Generation second generation mobile communication technology/3G (Third Generation) Moblie technology) network is through for many years deployment, can regard a kind of comprehensive covering to a certain extent as, along with SAE (System Architecture Evolution System Architecture Evolution)/LTE (Long TermEvolution Long Term Evolution) development of internet technology, the SAE/LTE network has also covered some cities and traffic hot zones, cause in present communication network, SAE/LTE network and 2G/3G network are also deposited.
At different network carrying mechanism, the speech business of mobile communication can be divided into following several classes:
The first kind is the session service of CS (Circuit Service circuit domain business) territory carrying, as voice call;
Second class is the session service of PS (Packet Switching packet switching) territory carrying, be also referred to as VoIP (Voice over IP Voice over IP technology) class business, provide QoS (Quality of Service service quality) to guarantee by IMS (IP Multimedia SubsystemIP multimedia service sub-system), as the voice call of IP (Internet Protocol Internet protocol) carrying.
The SAE/LTE network is as the packet switching system of a kind of PS territory carrying, and speech business can only be transmitted in its packet domain carrying, controls speech business by the IMS IP-based network.In the 2G/3G network, speech business generally all is to be carried on the CS territory.
If an audio call is anchored at VCC AS (Voice Call Continiuty ApplicationServer voice continuity application server), this speech business is exactly the VCC audio call.VCC Release7[TS23.206, TS24.206] grappling strategy to the VCC audio call in the standard is described below:
The mediaphone session of an IMS of grappling is by the policy control of operator.Default policy is that mediaphone session or the speech business of CS territory of all VCC contracted users' IMS all carried out grappling with the switching between convenient follow-up IMS territory and the CS territory.
The user who makes a call is in VCC audio call process, might cross over two networks, because the difference of load-bearing of mobile telecommunication business mechanism, under SAE/LTE network and 2G/3G network and the situation of depositing, the user is in VCC audio call process, when UE moves out SAE/LTE network base station institute coverage, enter the 2G/3G network base station area of coverage, or move out 2G/3G network base station institute coverage as UE, enter the SAE/LTE network base station area of coverage, satisfy that switching condition switches process in, interruption for fear of the IMS speech business, influence the continuity of user speech business, access network entity BSS in access network entity eNodeB in the SAE/LTE network or the 2G/3G network (Base StationSubsystem base station sub-system) sends handoff trigger message and notifies UE (User Equipment subscriber equipment), trigger UE by eNodeB (Envolved NodeB evolution base station) or BSS and initiate VCC territory transfer process, VCC as herein described territory conversion only refers to the related process of territory conversion of VCC among the VCC Release 7, is audio call is changed whole process to SAE/LTE PS territory to 2G/3G CS territory or 2G/3G CS territory from SAE/LTE PS territory a part.The prerequisite of this method is access network entity such as eNodeB or BSS, need earlier to be used for core net and be responsible for the entity of mobile management and determine whether this audio call is the VCC audio call, make triggering UE startup territory transformation flow complexity in the handoff procedure of existing VCC audio call by for example MME (Mobilty Management Entity mobile management entity) or MSC (Mobile Switching Center mobile switching centre) etc.s.
Summary of the invention
In order to solve in the prior art by access network entity such as eNodeB or BSS transmission handoff trigger message, make that triggering UE in the handoff procedure of VCC audio call starts territory transformation flow complicated problems, the embodiment of the invention provides a kind of changing method based on the VCC audio call, comprising:
The entity that core net is responsible for mobile management receives the handoff request message that access network entity is initiated;
The entity that core net is responsible for mobile management sends continuous voice call technology territory transition trigger message to subscriber equipment.
The embodiment of the invention also provides a kind of entity that core net is responsible for mobile management that is used for simultaneously, comprising:
Receiver module: be used to receive the handoff request message that access network entity is initiated;
Sending module: be used for handoff request message, send continuous voice call technology handoff trigger message to subscriber equipment according to described receiver module acceptance.
The embodiment of the invention also provides a kind of mobile management entity simultaneously, comprising:
Receiver module: be used to receive the handoff request message that access network entity is initiated;
Sending module: be used for handoff request message, send continuous voice call technology handoff trigger message to subscriber equipment according to described receiver module acceptance.
The embodiment of the invention also provides a kind of mobile switching centre simultaneously, comprising:
Receiver module: be used to receive the handoff request message that access network entity is initiated;
Sending module: be used for handoff request message, send continuous voice call technology handoff trigger message to subscriber equipment according to described receiver module acceptance.
The specific embodiments that is provided by the invention described above just because of being responsible for the entity of mobile management and directly sending handoff trigger message to UE by being used for core net, makes and triggers UE in the handoff procedure of VCC audio call to start the territory transformation flow simple as can be seen.
Description of drawings
Fig. 1 is the first embodiment method flow diagram provided by the invention;
Fig. 2 is the second embodiment method flow diagram provided by the invention;
Fig. 3 is the 3rd an embodiment method flow diagram provided by the invention;
Fig. 4 is used for the structure chart that core net is responsible for the entity of mobile management for the 4th embodiment provided by the invention;
Fig. 5 is the structure chart of the 5th embodiment MME provided by the invention;
Fig. 6 is the structure chart of the 6th embodiment MCS provided by the invention.
Embodiment
Send handoff trigger message in order to solve access network entity, trigger UE and start territory transformation flow complicated problems, first embodiment provided by the invention is a kind of changing method based on the VCC audio call, method flow as shown in Figure 1, under SAE/LTE network and 2G/3G network and the situation of depositing, the user is in the call process, when UE moves out SAE/LTE network base station institute coverage, enter the 2G/3G network base station area of coverage, satisfy switching condition, in VCC audio call handoff procedure, execution in step is as follows:
Step 101:MME receives the handoff request message of access network entity such as eNodeB initiation.
Step 102:MME sends VCC territory transition trigger message to UE according to this handoff request message.
Step 103:UE initiates VCC territory transfer process according to VCC territory transition trigger message.
Under SAE/LTE network and 2G/3G network and the situation of depositing, the user is in VCC audio call process, when UE moves out 2G/3G network base station institute coverage, enter the SAE/LTE network base station area of coverage, satisfy switching condition, in VCC audio call handoff procedure, execution and step 101 are to the similar step of step 103, difference is by the handoff request message of 2G/3G core network entity MSC reception from BSS, and sending VCC territory handoff trigger message to UE, UE initiates VCC territory transfer process according to VCC territory transition trigger message afterwards.No matter be the conversion of VCC territory is carried out in process from SAE/LTE PS territory to 2G/3G CS territory wherein, still the process of VCC territory conversion is carried out in 2G/3G CS territory to SAE/LTE PS territory, all want UE, MSC and IM CN subsystem to finish the conversion of VCC territory alternately jointly, but the former initiate the conversion of conversion request message trigger territory, territory by UE to MSC.
In said process, be that their common ground of MME or MSC all is to be used for the entity that core net is responsible for mobile management,
From obtaining the angle of information, with MME is example, adopt default VCC grappling strategy, MME when call setup or professional carry out in the process can obtain the ability that information that the user contracts and UE are had by the flow process of standard, thereby can determine whether an audio call is the audio call of VCC.Can remove the message flow of notifying access network entity eNodeB from by the message that MME initiates to trigger.
Speech business switches to 2G/3G from SAE/LTE, relate to the switching of different core network system, must participate in handoff procedure by MME, MME has all required information of the follow-up flow process of switching, sends to trigger the information interaction that message does not need volume to be as a part of handling process in the MME participation handoff procedure.MSC by the message that MSC initiates triggering, can remove the message flow of notice access network entity as being used for the entity that core net is responsible for mobile management from equally.
Second embodiment provided by the invention is a kind of changing method based on the VCC audio call, and in the handover scheme based on VCC, audio call need be finished the renewal of UE position and set up CS audio call context from LET to 2G/3G at MSC.If above-mentioned two processes are carried out when switching, then method flow such as Fig. 2 comprise:
Step 201:UE determines to satisfy switching condition to the eNodeB reporting measurement reports, triggers UE by the switching of SAE/LTE network to the 2G/3G network.
Step 202:eNodeB sends handoff request message Relocation required to MME.
Step 203:MME receives this handoff request message.
Step 204:MME judges that this switching is the switching of the audio call of a VCC to 2G/3G, and sending switching message is that Forward relocation required is to Voice IWF (Voice Inter-WorkingFunction speech function module) entity.In the handoff procedure based on SRVCC (the single Radio Link voice continuity of Single Radio Voice Call Continiuty technology), Voice IWF entity is responsible for fictionalizing an other wireless links and is connected to aiming field, and carries out the conversion of signaling.
Step 205:MME sends VCC territory transition trigger message to UE according to this handoff request message, triggers the territory transfer process that UE initiates position renewal and VCC.
Step 206: in MSC, finish the UE position and upgrade, set up 2G/3G CS audio call context.
Step 207:UE initiates VCC territory transfer process.
The handoff procedure that step 208:Voice IWF is connected with the CS territory as the PS territory of switching node.
The 3rd embodiment provided by the invention is a kind of changing method based on the VCC audio call, with the difference of method among the embodiment two be that step 206:UE position is upgraded and set up CS audio call context and carry out before advanceing to step 201, just the UE position is upgraded and to set up these two processes of CS audio call context pre-established.Method flow such as Fig. 3 comprise:
Step 301: in MSC, finish the UE position and upgrade, set up 2G/3G CS audio call context.
Step 302:UE is to the eNodeB reporting measurement reports, and eNodeB determines to satisfy switching condition, triggers UE by the switching of SAE/LTE network to the 2G/3G network.
Step 303:eNodeB to MME to sending handoff request message Relocation required.
Step 304:MME receives this handoff request message.
Step 305:MME judges that this switching is the switching of the audio call of a VCC to 2G/3G, sends Forward relocation required to Voice IWF entity.In the handoff procedure based on SRVCC, the VoiceIWF entity is responsible for fictionalizing an other wireless links and is connected to aiming field, and carries out the conversion of signaling.
Step 306:MME sends VCC territory transition trigger message to UE according to this handoff request message, triggers the territory transfer process that UE initiates position renewal and VCC.
Step 307:UE initiates VCC territory transfer process.
The handoff procedure that step 308:Voice IWF is connected with the CS territory as the PS territory of switching node.
The 4th embodiment provided by the invention is a kind of entity that core net is responsible for mobile management that is used for, and its structure comprises as shown in Figure 4:
Receiver module 401: be used to receive the handoff request message that access network entity is initiated;
Sending module 402: be used for handoff request message, send the VCC handoff trigger message to subscriber equipment according to described receiver module 401 acceptance.
The 5th embodiment provided by the invention is a kind of MME, and its structure comprises as shown in Figure 5:
Receiver module 501: be used to receive the handoff request message that access network entity is initiated;
Sending module 502: be used for handoff request message, send the VCC handoff trigger message to subscriber equipment according to described receiver module 501 acceptance.
Further comprise:
Switch message transmission module 503: be used for handoff request message, send and switch message to Voice IWF according to described receiver module 501 acceptance.
The 6th embodiment provided by the invention is a kind of MSC, and its structure comprises as shown in Figure 6:
Receiver module 601: be used to receive the handoff request message that access network entity is initiated;
Sending module 602: be used for handoff request message, send the VCC handoff trigger message to subscriber equipment according to described receiver module 601 acceptance.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1, a kind of changing method based on continuous voice call technology audio call is characterized in that, comprising:
The entity that core net is responsible for mobile management receives the handoff request message that access network entity is initiated;
The entity that core net is responsible for mobile management sends continuous voice call technology territory transition trigger message to subscriber equipment.
2, the method for claim 1 is characterized in that, the entity transmission continuous voice call technology territory transition trigger message that described core net is responsible for mobile management also comprises after the subscriber equipment step:
Subscriber equipment is initiated the conversion of continuous voice call technology territory according to continuous voice call technology territory transition trigger message.
3, method as claimed in claim 2 is characterized in that, described subscriber equipment initiates also to comprise before the switch process of continuous voice call technology territory according to continuous voice call technology territory transition trigger message:
Position updating of user's set and set up circuit domain business audio call context.
4, method as claimed in claim 3 is characterized in that, also comprises:
Subscriber equipment reports its measurement report that satisfies switching condition to access network entity, triggers to switch;
The entity that access network entity is responsible for mobile management according to measurement report to core net sends handoff request message;
The entity that core net is responsible for mobile management sends switching message to speech function module;
The handoff procedure that speech function module is connected with the circuit domain business territory as the packet-switched domain of switching node;
The entity that described core net is responsible for mobile management receives the handoff request message that access network entity is initiated; In described access network entity according to measurement report execution after the entity that core net is responsible for mobile management sends handoff request message;
Described subscriber equipment is initiated the conversion of continuous voice call technology territory according to continuous voice call technology territory transition trigger message step was finished before the handoff procedure that described speech function module is connected with the circuit domain business territory as the packet-switched domain of switching node is finished.
5, method as claimed in claim 4, it is characterized in that, described position updating of user's set and set up the contextual step of circuit domain business audio call and report the measurement report that satisfies switching condition at described subscriber equipment to access network entity is finished before triggering switch step.
6, method as claimed in claim 4, it is characterized in that, described position updating of user's set and set up the contextual step of circuit domain business audio call and report the measurement report that satisfies switching condition at described subscriber equipment to access network entity triggers switch step and subscriber equipment and initiates to be finished between the switch process of continuous voice call technology territory according to continuous voice call technology territory transition trigger message.
As any described method of claim of claim 2 to 6, it is characterized in that 7, describedly be used for core net to be responsible for the entity of mobile management be mobile management entity, described access network entity is an evolution base station.
8, method as claimed in claim 2 is characterized in that, describedly is used for core net to be responsible for the entity of mobile management be mobile switching centre.
9, a kind ofly be used for the entity that core net is responsible for mobile management, it is characterized in that, comprising:
Receiver module: be used to receive the handoff request message that access network entity is initiated;
Sending module: be used for handoff request message, send continuous voice call technology handoff trigger message to subscriber equipment according to described receiver module acceptance.
10, a kind of mobile management entity is characterized in that, comprising:
Receiver module: be used to receive the handoff request message that access network entity is initiated;
Sending module: be used for handoff request message, send continuous voice call technology handoff trigger message to subscriber equipment according to described receiver module acceptance.
11, mobile management entity as claimed in claim 10 is characterized in that, also comprises:
Switch message transmission module: be used for handoff request message, send and switch message to speech function module according to described receiver module acceptance.
12, a kind of mobile switching centre is characterized in that, comprising:
Receiver module: be used to receive the handoff request message that access network entity is initiated;
Sending module: be used for handoff request message, send continuous voice call technology handoff trigger message to subscriber equipment according to described receiver module acceptance.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101538806A CN101389130A (en) | 2007-09-13 | 2007-09-13 | Core network entity and switching method based on VCC speech calling |
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| CNA2007101538806A CN101389130A (en) | 2007-09-13 | 2007-09-13 | Core network entity and switching method based on VCC speech calling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011134341A1 (en) * | 2010-04-26 | 2011-11-03 | 中兴通讯股份有限公司 | Method and system for realizing reverse single radio voice call continuity |
| CN102238672A (en) * | 2010-04-23 | 2011-11-09 | 中兴通讯股份有限公司 | Method and system for realizing rSRVCC (reverse signal radio voice call continuity) |
| CN101848443B (en) * | 2009-03-27 | 2014-01-01 | 华为技术有限公司 | Communication service switching method, network system and interworking function entity |
| CN102104848B (en) * | 2009-12-16 | 2014-08-06 | ***通信集团公司 | Dual-mode single-standby voice service continuity realization method and Internet protocol (IP) multimedia subsystem |
-
2007
- 2007-09-13 CN CNA2007101538806A patent/CN101389130A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848443B (en) * | 2009-03-27 | 2014-01-01 | 华为技术有限公司 | Communication service switching method, network system and interworking function entity |
| CN102104848B (en) * | 2009-12-16 | 2014-08-06 | ***通信集团公司 | Dual-mode single-standby voice service continuity realization method and Internet protocol (IP) multimedia subsystem |
| CN102238672A (en) * | 2010-04-23 | 2011-11-09 | 中兴通讯股份有限公司 | Method and system for realizing rSRVCC (reverse signal radio voice call continuity) |
| WO2011134341A1 (en) * | 2010-04-26 | 2011-11-03 | 中兴通讯股份有限公司 | Method and system for realizing reverse single radio voice call continuity |
| CN102238673A (en) * | 2010-04-26 | 2011-11-09 | 中兴通讯股份有限公司 | Reverse single-standby service continuity realization method and system |
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Open date: 20090318 |