CN101848515B - Switching method, communication system and related equipment - Google Patents
Switching method, communication system and related equipment Download PDFInfo
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- CN101848515B CN101848515B CN200910129491.9A CN200910129491A CN101848515B CN 101848515 B CN101848515 B CN 101848515B CN 200910129491 A CN200910129491 A CN 200910129491A CN 101848515 B CN101848515 B CN 101848515B
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Abstract
The invention relates to the technical field of communication, and discloses a switching method, a communication system and related equipment. The switching method comprises the following steps of: receiving a forward relocation request which comprises a service instruction; determining the type of the service instruction; when the service instruction is a single radio voice call continuity (SRVVC) service instruction, sending the forward relocation request to an SRVCC mobile switching center server; and when the service instruction is a CSoPS service instruction which is connected to a data field core network through a circuit switch access network, sending the forward relocation request to a mobile switching center server of a core network circuit switch in a target system. Through the technical scheme provided by the embodiment of the invention, the switching mode needing to be adopted can be accurately determined.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of changing method, communication system and relevant device.
Background technology
Develop rapidly along with the communication technology, increasing operator will dispose long evolving system (LTE:Long Term Evolved) network, because LTE disposes completely, need more fund, operator may be investment stage by stage to the investment of LTE.For example, at the initial stage of disposing at LTE, select to meet user's speech business based on being connected to data field core net (CSoPS:CS over PS) the voice scheme of framework through circuit domain Access Network; Along with the further large scale deployment of LTE, operator can dispose the Service control network of IP multimedia subsystem, IMS (IMS:IP Multimedia Subsystem), and the control of now speech business and continuity guarantee voice continuity (SRVCC:single radio Voice Call Continuity between IMS and CS) scheme that can be based between single-receiver IP multimedia subsystem, IMS and circuit domain.Even if but having supported the voice scheme based on IMS, operator not necessarily abandons the investment on CSoPS, probably selects to allow CSoPS network exist within a long time, thereby reuses circuit domain core net and CSoPS as far as possible.
The framework based on different due to SRVCC and CSoPS, therefore adopt the switching of the speech business of SRVCC framework initiation only can adopt SRVCC mode to switch, in which, network side can send to Mobile Switching Center Server by forward redirect request (Forward Relocation Request); Adopt the switching of the speech business of CSoPS framework initiation only can adopt CSoPS mode to switch, in which, network side can send to forward redirect request the core net of service circuit domain, core net circuit domain are provided can be specifically visitor mobile switch center (VMSC) or VLR Visitor Location Register (VLR).
Because the switching flow of SRVCC and CSoPS is similar, therefore while supporting at the same time that in the network of SRVCC and CSoPS, voice occurring switches, network side may not correctly be determined and adopt which kind of switching mode to carry out voice switching, may be when needs adopt SRVCC mode to switch, forward redirect request is sent to the core net of service circuit domain is provided, or when needs adopt CSoPS mode to switch, forward redirect request is sent to Mobile Switching Center Server, thereby cause handoff failure.
Summary of the invention
The embodiment of the present invention provides a kind of changing method, communication system and relevant device, and the technical scheme of using the embodiment of the present invention to provide can correctly be determined the switching mode that needs employing.
The object of the embodiment of the present invention is achieved through the following technical solutions:
The embodiment of the present invention provides a kind of changing method, comprising:
Receive forward re-positioning request, this forward re-positioning request comprises business indication;
Determine the type of described business indication;
When business is designated as the indication of single wireless voice calling continuity SRVCC business, described forward re-positioning request is sent to SRVCC Mobile Switching Center Server; In described business, be designated as through circuit domain Access Network and be connected to data field core net CSoPS business when indication, described forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in goal systems.
The embodiment of the present invention provides another kind of changing method, comprising:
Reception is from the handover request of base station;
Structure comprises the forward re-positioning request of business indication;
When business is designated as the indication of SRVCC business, to SRVCC Mobile Switching Center Server, send forward re-positioning request; In business, be designated as CSoPS business when indication, to the Mobile Switching Center Server of core net circuit domain in goal systems, send forward re-positioning request.
The embodiment of the present invention provides a kind of universal network controller, comprising:
Receiving element, for receiving the forward re-positioning request from Mobility Management Entity, this forward re-positioning request comprises business indication;
Determining unit, for the type of determining that the included business of forward re-positioning request of described receiving element reception is indicated;
Transmitting element, for determining that in described determining unit business is designated as SRVCC business when indication, is sent to SRVCC Mobile Switching Center Server by described forward re-positioning request; When described determining unit determines that business is designated as the indication of CSoPS business, described forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in goal systems.
The embodiment of the present invention provides a kind of Mobility Management Entity, comprising:
Receiving element, for receiving the handover request from base station;
Structural unit, for having received after handover request at described receiving element, structure comprises the forward re-positioning request of the business indication of preserving in advance;
Transmitting element, while being designated as the indication of SRVCC business for the included business of forward redirect request at described structural unit structure, sends forward re-positioning request to SRVCC Mobile Switching Center Server; When the included business of forward redirect request of described structural unit structure is designated as the indication of CSoPS business, to the Mobile Switching Center Server of core net circuit domain in goal systems, send forward re-positioning request.
The embodiment of the present invention provides a kind of base station, comprising:
Receiving element, for receiving the measurement report from subscriber equipment;
Determining unit, determines and initiates to switch for the measurement report receiving according to described receiving element;
Structural unit, while initiating to switch for determining in described determining unit, structure comprises the handover request of the business indication of preserving in advance;
Transmitting element, for sending the handover request of described structural unit structure.
The embodiment of the present invention provides a kind of communication system, comprises universal network controller or Mobility Management Entity or base station that the embodiment of the present invention provides.
The above technical scheme providing from the embodiment of the present invention can be found out, because network side in the embodiment of the present invention can be determined corresponding switching mode according to business indication, and when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, the Mobile Switching Center Server of core net circuit domain in forward re-positioning request being sent to goal systems when business is designated as the indication of CSoPS business, and then the Mobile Switching Center Server that makes core net circuit domain can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
Accompanying drawing explanation
Fig. 1 is the flow chart of changing method embodiment mono-in the embodiment of the present invention;
Fig. 2 is the signaling process figure of changing method embodiment bis-in the embodiment of the present invention;
Fig. 3 is the signaling process figure of changing method embodiment tri-in the embodiment of the present invention;
Fig. 4 is the flow chart of changing method embodiment tetra-in the embodiment of the present invention;
Fig. 5 is the signaling process figure of changing method embodiment five in the embodiment of the present invention;
Fig. 6 is the flow chart of changing method embodiment six in the embodiment of the present invention;
Fig. 7 is the signaling process figure of changing method embodiment seven in the embodiment of the present invention;
Fig. 8 is the structure chart of general access network controller embodiment in the embodiment of the present invention;
Fig. 9 is the structure chart of Mobility Management Entity embodiment in the embodiment of the present invention;
Figure 10 is the structure chart of base station embodiment in the embodiment of the present invention;
Figure 11 is the structure chart of communication system embodiment mono-in the embodiment of the present invention;
Figure 12 is the structure chart of communication system embodiment bis-in the embodiment of the present invention;
Figure 13 is the structure chart of communication system embodiment tri-in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of changing method, communication system and relevant device, first introduce the changing method that the embodiment of the present invention provides, Fig. 1 has described the flow process of the changing method embodiment mono-that the embodiment of the present invention provides, this embodiment describes is the handling process (embodiment take IWF be described as example) of general access network controller (GANC:GAN Controller) or interconnection functional entity (IWF:Interworking Function), comprising:
101, receive forward re-positioning request; This forward re-positioning request comprises business indication;
The forward pass re-positioning request that IWF receives can directly be sent by Mobility Management Entity; Also can to switching selection functional entity (HOSF:Handover Selection Function), be sent by Mobility Management Entity, then be transmitted to IWF by HOSF; Forward re-positioning request can be constructed and send to Mobility Management Entity after the handover request that receives base station transmission.
Wherein, if this IWF is in interconnection functional entity resource pool, HOSF can forward this forward pass re-positioning request to all IWF in interconnection functional entity resource pool, be that HOSF broadcasts forward pass re-positioning request to interconnection functional entity resource pool, all IWF in interconnection functional entity resource pool can receive this forward re-positioning request; IWF in interconnection functional entity resource pool has received after forward redirect request, judges whether terminal corresponding to this forward re-positioning request has registration at this IWF, if any operation is not carried out in not registration, if there is registration just to carry out follow-up operation;
Further, if terminal corresponding to IWF judgement forward re-positioning request has registration at this IWF, IWF can also send acknowledge message to HOSF, makes HOSF can know that this forward re-positioning request can be processed;
102, judgement business indicates whether for the indication of SRVCC business; If so, enter 103; If not, enter 104;
By this step, can determine the type of the business indication that forward re-positioning request is included; Different business indicates corresponding business indication different, in speech business, be while initiating by SRVCC framework, its corresponding business indication is exactly the indication of SRVCC business, and the indication of SRVCC business can be the session Handover Number (STN-SR:Session Transfer Number for SRVCC) for SRVCC; In speech business, be while initiating by CSoPS framework, its corresponding business indication is exactly the indication of CSoPS business;
103, forward re-positioning request is sent to SRVCC Mobile Switching Center Server; Process ends;
Particularly, IWF can by and Mobile Switching Center Server between Iu-CS/A interface this forward re-positioning request is sent to SRVCC Mobile Switching Center Server; Wherein, Iu-CS interface is the interface that RNS (RNS) is connected to circuit domain; A interface is the interface that base station system (BSS) is connected to circuit domain.SRVCC Mobile Switching Center Server has received after forward re-positioning request, can adopt SRVCC switching flow to switch.
104, forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in goal systems; Process ends.
Particularly, IWF can by and core net circuit domain between Iu-CS/A interface this forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in goal systems.In goal systems, the Mobile Switching Center Server of core net circuit domain has received after forward re-positioning request, can adopt CSoPS switching flow to switch.
From the above, because GANC in the present embodiment can determine corresponding switching mode according to the business indication in forward re-positioning request, thereby when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, the Mobile Switching Center Server of core net circuit domain in forward re-positioning request being sent to goal systems when business is designated as the indication of CSoPS business, make the Mobile Switching Center Server of core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
Fig. 2 has described the signaling process of the changing method embodiment bis-that the embodiment of the present invention provides, and the base station (NodeB) in the universal terrestrial access network that in the present embodiment, base station is evolution (E-UTRAN), referred to as evolution base station (eNB); In the present embodiment, general access network controller is IWF, and IWF is under SRVCC framework, can with CSoPS framework under GANC be same entity, in this embodiment, switching judging is carried out by IWF, comprising:
201, subscriber equipment sends measurement report to evolution base station;
202, evolution base station carries out switching judging; Particularly, the measurement report that the present embodiment hypothesis evolution base station sends based on subscriber equipment determines to be initiated to the switching of global system for mobile communications (GSM)/improvement data transfer rate GSM (EDGE) Radio Access Network (GERAN) or Universal Mobile Telecommunications System (UMTS) land radio access web (UTRAN);
203, evolution base station sends handover request (Handover Required) to Mobility Management Entity, this handover request can comprise Target cell number (Target ID), source is to the container (Source toTarget Transparent Container) of destination end, and wherein source comprises service quality rating indication (QCI:QoS Class Identifier) value to the container of destination end.
204, Mobility Management Entity carries separated; Particularly, Mobility Management Entity can and be isolated voice bearer according to the identification of quality competition power exponential quantity, prepares to start and switches.
205, Mobility Management Entity structure forward redirect request, and send to interconnection functional entity; Wherein, forward redirect request can comprise that Target cell number, business indication, the international comprehensive service digital net number (MSISDN:Mobile Station international ISDN number) of travelling carriage, source, to information such as the container of destination end, MM Contexts (MM Context), specifically can send to interconnection functional entity by Sv interface.Wherein, business indication can be the indication of SRVCC business or the indication of CSoPS business.
User is when service contracting, for the SRVCC business indication different with the signing employing of CSoPS, the indication of SRVCC business can be STN-SR, and the indication of CSoPS business can be by other sign, as long as can allow interconnection functional entity identification can not affect the realization of the embodiment of the present invention; Wherein, the business indication that Mobility Management Entity obtains can be sent by home subscriber server (HSS:Home Subscriber Server), specifically can carry out when EUTRAN adheres to sending to Mobility Management Entity by HSS at subscriber equipment.In a kind of implementation providing in the embodiment of the present invention, home subscriber server can become CSoPS business instruction simulation the indication of SRVCC business, in the present embodiment, the indication of CSoPS business can be modeled to STN-SR, Mobility Management Entity is identified the indication of SRVCC business and the indication of CSoPS business with regard to not needing like this, Mobility Management Entity can all be regarded SRVCC business indication and the indication of CSoPS business SRVCC business and indicate and carry out transparent transmission, thereby when network upgrade, do not need Mobility Management Entity to improve, needed investment in the time of can reducing network upgrade.
206a, interconnection functional entity check the business indication in forward re-positioning request, if SRVCC business indication, the indication of SRVCC business can be specifically STN-SR, be judged as SRVCC switching flow, by A/Iu-CS interface, forward re-positioning request passed through to SRVCC Mobile Switching Center Server;
206b, interconnection functional entity check the business indication in forward re-positioning request, if the STN-SR being become by CSoPS business instruction simulation, interconnection functional entity is transmitted to forward re-positioning request by A/Iu-CS the Mobile Switching Center Server of core net circuit domain in the current goal systems that service is provided.
206a and 206b select an execution according to the difference of business indication.
From the above, because IWF in the present embodiment can determine corresponding switching mode according to the business indication in forward re-positioning request, thereby when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, the Mobile Switching Center Server of core net circuit domain in forward re-positioning request being sent to goal systems when business is designated as the indication of CSoPS business, make the Mobile Switching Center Server of core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
Fig. 3 has described the signaling process of the changing method embodiment tri-that the embodiment of the present invention provides, and the base station (NodeB) in the universal terrestrial access network that in the present embodiment, base station is evolution (E-UTRAN), referred to as evolution base station (eNB); In the present embodiment, general access network controller is IWF, and forward redirect request sends to IWF by HOSF, comprising:
301, subscriber equipment sends measurement report to evolution base station;
302, evolution base station carries out switching judging;
With reference to 202, carry out;
303, evolution base station sends handover request (Handover Required) to Mobility Management Entity, this handover request can comprise Target cell number (Target ID), source is to the container of destination end, and wherein source comprises QCI value to the container of destination end.
304, Mobility Management Entity carries separated; Particularly, Mobility Management Entity can and be isolated voice bearer according to the identification of quality competition power exponential quantity, prepares to start and switches.
305, Mobility Management Entity sends forward redirect request to HOSF;
306, HOSF sends forward redirect request to all interconnection functional entities in interconnection functional entity pond, such as, in interconnection functional entity pond, have n interconnection functional entity, be respectively interconnection functional entity 1, interconnection functional entity 2 ..., interconnection functional entity n;
307, the interconnection functional entity in interconnection functional entity pond has received after forward re-positioning request, judges whether terminal corresponding to this re-positioning request has registration at this interconnection functional entity; The present embodiment supposes that terminal corresponding to this re-positioning request has registration at interconnection functional entity n, interconnection functional entity n sends acknowledge message (Acknowledge) to HOSF, so that the selected interconnection functional entity n of confirmation that returns of HOSF is as the interconnection functional entity of service.
Because forward re-positioning request can comprise the sign of corresponding terminal, so can judge whether terminal corresponding to this re-positioning request has registration at this interconnection functional entity according to the sign of terminal.
308a, interconnection functional entity check the business indication in forward re-positioning request, if SRVCC business indication, the indication of SRVCC business can be specifically STN-SR, be judged as SRVCC switching flow, by A/Iu-CS interface, forward re-positioning request passed through to SRVCC Mobile Switching Center Server;
308b, interconnection functional entity check the business indication in forward re-positioning request, if the STN-SR being become by CSoPS business instruction simulation, interconnection functional entity is transmitted to forward re-positioning request by A/Iu-CS the Mobile Switching Center Server of core net circuit domain in the current goal systems that service is provided.
308a and 308b select an execution according to the difference of business indication.
From the above, because IWF in the present embodiment can determine corresponding switching mode according to the business indication in forward re-positioning request, thereby when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, the Mobile Switching Center Server of core net circuit domain in forward re-positioning request being sent to goal systems when business is designated as the indication of CSoPS business, make the Mobile Switching Center Server of core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching, and the present embodiment can send to the IWF in interconnection functional entity resource pool by forward redirect request by HOSF, can realize the IWF load balancing in interconnection functional entity resource pool, and can raising system the stability of operation.
Fig. 4 has described the flow process of the changing method embodiment tetra-of embodiment of the present invention raising, and what this embodiment described is the handling process of Mobility Management Entity (MME:Mobility Management Entity), comprising:
401, receive the handover request from base station;
402, structure comprises the forward re-positioning request of the business indication of preserving in advance;
The indication of business that Mobility Management Entity is preserved in advance can be known and preserve in controlling (PCC:Pllicy and Charging Control) process setting up the strategy of voice dedicated bearer and charging; Particularly, if voice bearer adopts SRVCC framework to set up, Mobility Management Entity obtains the indication of SRVCC business in PCC process; If voice bearer adopts CSoPS framework to set up, Mobility Management Entity obtains the indication of CSoPS business in PCC process.
403, judgement business indicates whether for the indication of SRVCC business; If so, enter 404; If not, enter 405;
404, to SRVCC Mobile Switching Center Server, send forward re-positioning request; Process ends;
Particularly, Mobility Management Entity can directly send forward re-positioning request to Mobile Switching Center Server by Sv interface; Also forward re-positioning request can be sent to general access network controller, the SRVCC business indication that general access network controller comprises according to this forward re-positioning request passes through SRVCC Mobile Switching Center Server by this forward re-positioning request.
405, the Mobile Switching Center Server to core net circuit domain in goal systems sends forward re-positioning request.
Particularly, Mobility Management Entity can send to general access network controller by forward re-positioning request, and the CSoPS business indication being comprised according to this forward re-positioning request by general access network controller passes through this forward re-positioning request the Mobile Switching Center Server of core net circuit domain in goal systems.
From the above, because MME in the present embodiment can determine corresponding switching mode according to the business indication of preserving in advance, and Insert service indication in forward re-positioning request, thereby make GANC, when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make GANC business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
Fig. 5 has described the signaling process of the changing method embodiment five that the embodiment of the present invention provides, and in the present embodiment, general access network controller is interconnection functional entity, and in this embodiment, switching judging is carried out by MME, comprising:
501, subscriber equipment sends measurement report to evolution base station;
502, evolution base station carries out switching judging; Particularly, the measurement report that the present embodiment hypothesis evolution base station sends based on subscriber equipment determines to be initiated to the switching of GERAN/UTRAN;
503, evolution base station sends handover request to Mobility Management Entity, and this handover request can comprise Target cell number, and source is to the container of destination end, and wherein source comprises quality competition power exponential quantity to the container of destination end.
504, Mobility Management Entity carries separated; Particularly, Mobility Management Entity can and be isolated voice bearer according to the identification of quality competition power exponential quantity, prepares to start and switches.
505, Mobility Management Entity structure forward redirect request, this forward redirect request has been inserted business indication; Particularly, corresponding switching mode is determined in the business indication that Mobility Management Entity basis is preserved in advance, when determining that employing SRVCC mode is switched, inserts the indication of SRVCC business in forward redirect request; When determining that employing CSoPS mode is switched, in forward redirect request, insert the indication of CSoPS business.
506, Mobility Management Entity sends to interconnection functional entity by forward redirect request.
507a, interconnection functional entity check the business indication in forward re-positioning request, if SRVCC business indication (STN-SR), be judged as SRVCC switching flow, by A/Iu-CS interface, forward re-positioning request passed through to SRVCC Mobile Switching Center Server;
507b, interconnection functional entity check the business indication in forward re-positioning request, if indicated by CSoPS business, be judged as CSoPS switching flow, by A/Iu-CS, forward re-positioning request be transmitted to the Mobile Switching Center Server of core net circuit domain in the current goal systems that service is provided.
Be understandable that, in the present embodiment, by interconnection functional entity, forward re-positioning request passed through to Mobile Switching Center Server; In practical application, also can by Sv interface, directly forward re-positioning request be sent to Mobile Switching Center Server by Mobility Management Entity.
From the above, because MME in the present embodiment can determine corresponding switching mode according to the business indication of preserving in advance, and Insert service indication in forward re-positioning request, thereby make IWF, when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make IWF business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
Fig. 6 has described the flow process of the changing method embodiment six of embodiment of the present invention raising, and what this embodiment described is the handling process of base station and MME, comprising:
601, base station is determined and is initiated to switch according to the measurement report of subscriber equipment;
602, base station structure comprises the handover request of the business indication of preserving in advance; Particularly, corresponding switching mode is determined in the business indication that base station basis is preserved in advance, when determining that employing SRVCC mode is switched, inserts the indication of SRVCC business in handover request; When determining that employing CSoPS mode is switched, in handover request, insert the indication of CSoPS business.
Wherein, the business indication that preserve in advance base station can obtain in setting up the PCC process of voice dedicated bearer; Particularly, if voice bearer adopts SRVCC framework to set up, base station obtains the indication of SRVCC business in PCC process; If voice bearer adopts CSoPS framework to set up, base station obtains the indication of CSoPS business in PCC process.
603, Mobility Management Entity receives after handover request, and structure comprises the forward redirect request of business indication;
Mobility Management Entity, when structure forward redirect request, does not need handover request to resolve, but the information of directly handover request being carried encapsulates, and because handover request has comprised business indication, forward redirect request also comprises business indication.
604, judgement business indicates whether for the indication of SRVCC business; If so, enter 605; If not, enter 606;
605, to SRVCC Mobile Switching Center Server, send forward re-positioning request; Process ends;
Particularly, Mobility Management Entity can directly send forward re-positioning request to SRVCC Mobile Switching Center Server by Sv interface; Also forward re-positioning request can be sent to general access network controller, the SRVCC business indication being comprised according to this forward re-positioning request by general access network controller passes through SRVCC Mobile Switching Center Server by this forward re-positioning request.
606, the Mobile Switching Center Server to core net circuit domain in goal systems sends forward re-positioning request.
Particularly, Mobility Management Entity can send to general access network controller by forward re-positioning request, and the CSoPS business indication being comprised according to this forward re-positioning request by general access network controller passes through Mobile Switching Center Server by this forward re-positioning request.
From the above, because corresponding switching mode can be determined according to the business indication of preserving in advance in base station in the present embodiment, and Insert service indication in handover request, thereby make MME when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make MME business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
Fig. 7 has described the signaling process of the changing method embodiment seven that the embodiment of the present invention provides, and in the present embodiment, general access network controller is interconnection functional entity, and in this embodiment, switching judging is carried out by evolution base station, comprising:
701, subscriber equipment sends measurement report to evolution base station;
702, evolution base station carries out switching judging; Particularly, the measurement report that the present embodiment hypothesis evolution base station sends based on subscriber equipment determines to be initiated to the switching of GERAN/UTRAN;
703, evolution base station structure handover request, Insert service indication in handover request; This handover request can also comprise Target cell number, and source is to the container of destination end, and wherein source comprises quality competition power exponential quantity to the container of destination end.
Particularly, corresponding switching mode is determined in the business indication that base station basis is preserved in advance, when determining that employing SRVCC mode is switched, inserts the indication of SRVCC business in handover request; When determining that employing CSoPS mode is switched, in handover request, insert the indication of CSoPS business.
704, evolution base station sends handover request to Mobility Management Entity;
705, Mobility Management Entity carries separated; Particularly, Mobility Management Entity can and be isolated voice bearer according to the identification of quality competition power exponential quantity, prepares to start and switches.
706, Mobility Management Entity structure forward redirect request; Mobility Management Entity, when structure forward redirect request, does not need handover request to resolve, but the information of directly handover request being carried encapsulates, so forward redirect request has comprised business indication.
707, Mobility Management Entity checks the business indication in handover request, if the indication of SRVCC business is judged as SRVCC switching flow, by Sv interface, forward re-positioning request is passed through to SRVCC Mobile Switching Center Server;
708, Mobility Management Entity checks the business indication in handover request, if the indication of CSoPS business is judged as CSoPS switching flow, forward re-positioning request is sent to interconnection functional entity;
709, interconnection functional entity passes through forward re-positioning request the Mobile Switching Center Server of core net circuit domain in goal systems.
Be understandable that, Mobility Management Entity can not judge professional knowledge yet, directly forward re-positioning request is sent to interconnection functional entity, by interconnection functional entity, according to business indication, forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in SRVCC Mobile Switching Center Server or goal systems.
From the above, because evolution base station in the present embodiment can be determined corresponding switching mode according to the business indication of preserving in advance, and Insert service indication in handover request, thereby make MME when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make MME business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
It should be noted that, previous embodiment of the present invention mainly describes with Generation Mobile Telecommunication System (2G)/3G (Third Generation) Moblie (3G) circuit domain core net mobile switching centre (MSC)/VLR Visitor Location Register (VLR), the method that also can adopt the embodiment of the present invention to provide when for code division multiple access (CDMA) 1xRTT domain core net 1xRTT MSC/VLR is processed, and this specification repeats no more.
Previous embodiment of the present invention mainly be take IP and is connected Access Network (IP-CAN:IP Connectivity AccessNetwork) and describe as LTE/ System Architecture Evolution (SAE) gruping insertion network, at IP-CAN, it is high-speed packet access (HSPA:High-Speed Packet Access), micro-wave access global inter communication (WiMAX:Worldwide Interoperability for Microwave Access), third generation partner program 2 (3GPP2), the method that also can adopt the embodiment of the present invention to provide during the IP access networks such as super mobile broadband (UMB:Ultra Mobile Broadband) is processed, this specification repeats no more.And the embodiment of the present invention can also be supported IP access technology independence, hand-off process when being therefore also applicable to user fixedly access way being linked into 2G/3G circuit domain by Asymmetrical Digital Subscriber Line (ADSL:Asymmetric Digital Subscriber Line) etc., for providing the fixedly networking telephone of Mobile Convergence (VoIP:Voice over Internet Protocol) solution that prerequisite is provided.
The structure of the universal network controller embodiment that the embodiment of the present invention provides as shown in Figure 8, comprising:
Receiving element 801, for receiving the forward re-positioning request from Mobility Management Entity, this forward re-positioning request comprises business indication;
Determining unit 802, for the type of determining that the included business of forward re-positioning request of receiving element 801 receptions is indicated;
Transmitting element 803, for when determining unit 802 determines that business is designated as the indication of SRVCC business, is sent to SRVCC Mobile Switching Center Server by forward re-positioning request; When determining unit 802 determines that business is designated as the indication of CSoPS business, forward re-positioning request is sent to core net circuit domain.
From the above, because GANC in the present embodiment can determine corresponding switching mode according to the business indication in forward re-positioning request, thereby when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, the Mobile Switching Center Server of core net circuit domain in forward re-positioning request being sent to goal systems when business is designated as the indication of CSoPS business, make the Mobile Switching Center Server of core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
The structure of the Mobility Management Entity embodiment that the embodiment of the present invention provides as shown in Figure 9, comprising:
Receiving element 901, for receiving the handover request from base station;
Transmitting element 903, while being designated as the indication of SRVCC business for the included business of forward redirect request at structural unit 902 structures, sends forward re-positioning request to SRVCC Mobile Switching Center Server; When the included business of forward redirect request of structural unit 902 structure is designated as the indication of CSoPS business, to the Mobile Switching Center Server of core net circuit domain in goal systems, send forward re-positioning request.
From the above, because MME in the present embodiment can determine corresponding switching mode according to the business indication of preserving in advance, and Insert service indication in forward re-positioning request, thereby make GANC, when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make GANC business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
The structure of the base station embodiment that the embodiment of the present invention provides as shown in figure 10, comprising:
Receiving element 1001, for receiving the measurement report from subscriber equipment;
Determining unit 1002, determines and initiates to switch for the measurement report receiving according to receiving element 1001;
Transmitting element 1004, for sending the handover request of structural unit 1003 structures.
From the above, because corresponding switching mode can be determined according to the business indication of preserving in advance in base station in the present embodiment, and Insert service indication in handover request, thereby make MME when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make MME business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
The structure of the communication system embodiment mono-that the embodiment of the present invention provides as shown in figure 11, comprising:
General access network controller 1101, for receiving the forward re-positioning request from Mobility Management Entity 1102, this forward re-positioning request comprises business indication; Determine the type of the business indication that forward re-positioning request is included; When business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server 1103; When business is designated as the indication of CSoPS business, forward re-positioning request is sent to the Mobile Switching Center Server 1104 of core net circuit domain in goal systems.
From the above, because GANC in the present embodiment can determine corresponding switching mode according to the business indication in forward re-positioning request, thereby when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, the Mobile Switching Center Server of core net circuit domain in forward re-positioning request being sent to goal systems when business is designated as the indication of CSoPS business, make the Mobile Switching Center Server of core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
The structure of the communication system embodiment bis-that the embodiment of the present invention provides as shown in figure 12, comprising:
From the above, because MME in the present embodiment can determine corresponding switching mode according to the business indication of preserving in advance, and Insert service indication in forward re-positioning request, thereby make GANC, when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make GANC business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
The structure of the communication system embodiment tri-that the embodiment of the present invention provides as shown in figure 13, comprising:
From the above, because corresponding switching mode can be determined according to the business indication of preserving in advance in base station in the present embodiment, and Insert service indication in handover request, thereby make MME when business is designated as the indication of SRVCC business, forward re-positioning request is sent to SRVCC Mobile Switching Center Server, and then make SRVCC Mobile Switching Center Server can adopt SRVCC switching flow to switch, make MME business be designated as CSoPS business when indication forward re-positioning request is sent to goal systems in the Mobile Switching Center Server of core net circuit domain, and then the Mobile Switching Center Server that makes core net circuit domain in goal systems can adopt CSoPS switching flow to switch, thereby guarantee correctly carrying out of switching.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
A kind of changing method, communication system and the relevant device that above the embodiment of the present invention are provided are described in detail, and the explanation of above embodiment is just for helping to understand method of the present invention and thought thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (11)
1. a changing method, is characterized in that, comprising:
Receive forward re-positioning request, this forward re-positioning request comprises business indication; Described forward re-positioning request is to be constructed and send after the handover request that receives base station transmission by Mobility Management Entity, the indication of described business is the business indication that described Mobility Management Entity is preserved in advance, and to be described Mobility Management Entity be learned and preserve in setting up the strategy of voice dedicated bearer and charging control procedure in described business indication of preserving in advance;
Determine the type of described business indication;
When business is designated as the voice continuity SRVCC business indication between single-receiver IP multimedia subsystem, IMS and circuit domain, described forward re-positioning request is sent to SRVCC Mobile Switching Center Server; In described business, be designated as through circuit domain Access Network and be connected to data field core net CSoPS business when indication, described forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in goal systems; Described CSoPS business indication is modeled into the form of SRVCC business indication.
2. changing method as claimed in claim 1, is characterized in that, the described forward re-positioning request of reception is from Mobility Management Entity or switch selection functional entity.
3. changing method as claimed in claim 2, is characterized in that, by interconnection functional entity, receives described forward re-positioning request, and described interconnection functional entity belongs to interconnection functional entity pond, and described interconnection functional entity pond comprises a plurality of interconnection functional entities;
Described reception forward re-positioning request comprises before:
Described switching selection functional entity sends forward re-positioning request to described a plurality of interconnection functional entities.
4. changing method as claimed in claim 2, is characterized in that, the described forward re-positioning request of reception is carried out adaptive switched selection functional entity, after reception forward re-positioning request, further comprises:
Judge whether terminal corresponding to described re-positioning request has registration;
If so, carry out the step of the type of the business indication of determining that described forward re-positioning request is included.
5. changing method as claimed in claim 4, is characterized in that, if terminal corresponding to described re-positioning request has registration, the method also comprises:
To described switching selection functional entity, send acknowledge message, so that the selected interconnection functional entity of described confirmation that returns of described switching selection functional entity is as the interconnection functional entity of service.
6. a changing method, is characterized in that, comprising:
Reception is from the handover request of base station;
Structure comprises the forward re-positioning request of business indication;
When business is designated as the indication of SRVCC business, to SRVCC Mobile Switching Center Server, send forward re-positioning request; In business, be designated as CSoPS business when indication, to the Mobile Switching Center Server of core net circuit domain in goal systems, send forward re-positioning request; Described CSoPS business indication is modeled into the form of SRVCC business indication;
Described structure comprises that the forward re-positioning request of business indication comprises:
Structure comprises in advance the forward re-positioning request of the business indication of preserving, and described business indication of preserving is in advance to be learned and to preserve in setting up the strategy of voice dedicated bearer and charging control procedure.
7. changing method as claimed in claim 6, is characterized in that, sends forward re-positioning request be specially to the Mobile Switching Center Server of core net circuit domain in goal systems:
By general access network controller, forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in goal systems.
8. changing method as claimed in claim 6, is characterized in that, sends forward re-positioning request be specially to SRVCC Mobile Switching Center Server:
By general access network controller, forward re-positioning request is sent to SRVCC Mobile Switching Center Server; Or,
Directly forward re-positioning request is sent to SRVCC Mobile Switching Center Server.
9. a universal network controller, is characterized in that, comprising:
Receiving element, for receiving the forward re-positioning request from Mobility Management Entity, this forward re-positioning request comprises business indication; Described forward re-positioning request is to be constructed and send after the handover request that receives base station transmission by Mobility Management Entity, the indication of described business is the business indication that described Mobility Management Entity is preserved in advance, and to be described Mobility Management Entity be learned and preserve in setting up the strategy of voice dedicated bearer and charging control procedure in described business indication of preserving in advance;
Determining unit, for the type of determining that the included business of forward re-positioning request of described receiving element reception is indicated;
Transmitting element, for determining that in described determining unit business is designated as SRVCC business when indication, is sent to SRVCC Mobile Switching Center Server by described forward re-positioning request; When described determining unit determines that business is designated as the indication of CSoPS business, described forward re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in goal systems; Described CSoPS business indication is modeled into the form of SRVCC business indication.
10. a Mobility Management Entity, is characterized in that, comprising:
Receiving element, for receiving the handover request from base station;
Structural unit, for having received after handover request at described receiving element, structure comprises the forward re-positioning request of the business indication of preserving in advance; Described business indication of preserving is in advance to be learned and to preserve in setting up the strategy of voice dedicated bearer and charging control procedure;
Transmitting element, while being designated as the indication of SRVCC business for the included business of forward redirect request at described structural unit structure, sends forward re-positioning request to SRVCC Mobile Switching Center Server; When the included business of forward redirect request of described structural unit structure is designated as the indication of CSoPS business, to the Mobile Switching Center Server of core net circuit domain in goal systems, send forward re-positioning request; Described CSoPS business indication is modeled into the form of SRVCC business indication.
11. 1 kinds of communication systems, is characterized in that, comprise universal network controller as claimed in claim 9, Mobility Management Entity as claimed in claim 10; And
A base station, described base station comprises:
Receiving element, for receiving the measurement report from subscriber equipment;
Determining unit, determines and initiates to switch for the measurement report receiving according to described receiving element;
Structural unit, while initiating to switch for determining in described determining unit, structure comprises the handover request of the business indication of preserving in advance;
Transmitting element, for sending the handover request of described structural unit structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910129491.9A CN101848515B (en) | 2009-03-25 | 2009-03-25 | Switching method, communication system and related equipment |
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| CN200910129491.9A CN101848515B (en) | 2009-03-25 | 2009-03-25 | Switching method, communication system and related equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102714831B (en) * | 2011-01-19 | 2014-04-02 | 华为技术有限公司 | Handover method and mobility management network element |
| CN104041122B (en) * | 2012-10-18 | 2017-12-29 | 华为技术有限公司 | A kind of data domain service processing method, apparatus and system |
| CN103841545B (en) * | 2012-11-27 | 2017-12-29 | 华为技术有限公司 | The method and device that a kind of MME ponds scene ability information reports |
| CN108206898B (en) * | 2016-12-20 | 2021-03-19 | 展讯通信（上海）有限公司 | Method and device for realizing multi-party call and multi-pass terminal |
| WO2019140646A1 (en) * | 2018-01-19 | 2019-07-25 | Oppo广东移动通信有限公司 | Handover processing method, network device, ue, and computer storage medium |
| CN113133071B (en) * | 2020-01-16 | 2022-05-20 | 大唐移动通信设备有限公司 | Data forwarding method and base station |
| CN113825095A (en) * | 2021-07-23 | 2021-12-21 | 恒安嘉新（北京）科技股份公司 | Network communication service tracking method, device, equipment and storage medium |
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| CN101227454A (en) * | 2007-01-16 | 2008-07-23 | 中兴通讯股份有限公司 | Method for transmitting multicast business adding with indication |
| AU2007354506A1 (en) * | 2007-06-08 | 2008-12-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Circuit switched fallback mechanism |
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