CN101848515A - Switching method, communication system and related equipment - Google Patents
Switching method, communication system and related equipment Download PDFInfo
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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
Along with the develop rapidly of the communication technology, increasing operator will dispose long evolving system (LTE:Long Term Evolved) network, needs more fund because LTE disposes fully, and operator may be stage by stage investment to the investment of LTE.For example, at the initial stage that LTE disposes, select to satisfy the user's voice business based on the voice scheme that is connected to data field core net (CSoPS:CS over PS) framework through the circuit domain Access Network; Along with the further large scale deployment of LTE, operator can dispose the professional Control Network of IP multimedia subsystem, IMS (IMS:IP Multimedia Subsystem), and the control of speech business this moment and continuity guarantee can be based on the voice continuity between single-receiver IP multimedia subsystem, IMS and the circuit domain (SRVCC:single radio Voice Call Continuity between IMS and CS) scheme.Even if but having supported voice scheme based on IMS, operator not necessarily abandons the investment on CSoPS, selects probably to allow the CSoPS network exist in a long time, thereby reuses circuit domain core net and CSoPS as far as possible.
Because SRVCC and CSoPS are based on different frameworks, therefore adopt the switching of the speech business of SRVCC framework initiation only can adopt the SRVCC mode to switch, in this mode, network side can send to Mobile Switching Center Server with preceding commentaries on classics redirect request (Forward Relocation Request); Adopt the switching of the speech business of CSoPS framework initiation only can adopt the CSoPS mode to switch, in this mode, network side can send to preceding commentaries on classics redirect request the core net of service circuit domain, core net circuit domain are provided specifically can be visitor mobile switch center (VMSC) or VLR Visitor Location Register (VLR).
Because the switching flow of SRVCC and CSoPS is similar, therefore when supporting at the same time that in the network of SRVCC and CSoPS voice taking place switches, which kind of switching mode network side may not correctly determine adopt carry out the voice switching, promptly may be when needs adopt the SRVCC mode to switch, preceding commentaries on classics redirect request sent to provides the core net of service circuit domain, perhaps when needs adopt the CSoPS mode to switch, preceding commentaries on classics redirect request is sent to Mobile Switching Center Server, thereby cause handoff failure.
Summary of the invention
The embodiment of the invention provides a kind of changing method, communication system and relevant device, and the technical scheme of using the embodiment of the invention to provide can correctly be determined the switching mode that need adopt.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of changing method, comprising:
Change re-positioning request before receiving, change re-positioning request before this and comprise professional indication;
Determine the type of described professional indication;
When business is designated as the professional indication of single wireless continuous voice call SRVCC, be sent to the SRVCC Mobile Switching Center Server with changeing re-positioning request before described; Be designated as when being connected to the professional indication of data field core net CSoPS in described business, change the Mobile Switching Center Server that re-positioning request is sent to core net circuit domain in the goal systems before will be described through the circuit domain Access Network.
The embodiment of the invention provides another kind of changing method, comprising:
Reception is from the handoff request of base station;
Structure comprises the preceding commentaries on classics re-positioning request of professional indication;
When business is designated as the professional indication of SRVCC, before sending, changes the SRVCC Mobile Switching Center Server re-positioning request; When business is designated as the professional indication of CSoPS, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems.
The embodiment of the invention provides a kind of universal network controller, comprising:
Receiving element is used to receive the preceding commentaries on classics re-positioning request from Mobility Management Entity, changes re-positioning request before this and comprises professional indication;
Determining unit is used for determining the type of the business indication that preceding commentaries on classics re-positioning request that described receiving element receives is included;
Transmitting element is used for being sent to the SRVCC Mobile Switching Center Server with changeing re-positioning request before described when described determining unit determines that business is designated as the professional indication of SRVCC; When described determining unit determines that business is designated as the professional indication of CSoPS, the Mobile Switching Center Server that re-positioning request is sent to core net circuit domain in the goal systems will be changeed before described.
The embodiment of the invention provides a kind of Mobility Management Entity, comprising:
Receiving element is used to receive the handoff request from the base station;
Structural unit is used for after described receiving element has received handoff request, and structure comprises the preceding commentaries on classics re-positioning request of the business indication of preserving in advance;
Transmitting element is used for changeing re-positioning request before the SRVCC Mobile Switching Center Server sends when the included business of preceding commentaries on classics redirect request of described structural unit structure is designated as the professional indication of SRVCC; When the included business of preceding commentaries on classics redirect request of described structural unit structure is designated as the professional indication of CSoPS, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems.
The embodiment of the invention provides a kind of base station, comprising:
Receiving element is used to receive the measurement report from subscriber equipment;
Determining unit, the measurement report that is used for receiving according to described receiving element are determined to initiate to switch;
Structural unit is used for when described determining unit is determined to initiate to switch, and structure comprises the handoff request of the business indication of preserving in advance;
Transmitting element is used to send the handoff request that described structural unit is constructed.
The embodiment of the invention provides a kind of communication system, comprises universal network controller or Mobility Management Entity or base station that the embodiment of the invention provides.
The above technical scheme that provides from the embodiment of the invention as can be seen, because network side can be determined corresponding switching mode according to the business indication in the embodiment of the invention, and when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes the core net circuit domain can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
Description of drawings
Fig. 1 is the flow chart of changing method embodiment one in the embodiment of the invention;
Fig. 2 is the signaling process figure of changing method embodiment two in the embodiment of the invention;
Fig. 3 is the signaling process figure of changing method embodiment three in the embodiment of the invention;
Fig. 4 is the flow chart of changing method embodiment four in the embodiment of the invention;
Fig. 5 is the signaling process figure of changing method embodiment five in the embodiment of the invention;
Fig. 6 is the flow chart of changing method embodiment six in the embodiment of the invention;
Fig. 7 is the signaling process figure of changing method embodiment seven in the embodiment of the invention;
Fig. 8 is the structure chart of general access network controller embodiment in the embodiment of the invention;
Fig. 9 is the structure chart of Mobility Management Entity embodiment in the embodiment of the invention;
Figure 10 is the structure chart of base station embodiment in the embodiment of the invention;
Figure 11 is the structure chart of communication system embodiment one in the embodiment of the invention;
Figure 12 is the structure chart of communication system embodiment two in the embodiment of the invention;
Figure 13 is the structure chart of communication system embodiment three in the embodiment of the invention.
Embodiment
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 only 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 is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of changing method, communication system and relevant device, introduce the changing method that the embodiment of the invention provides earlier, Fig. 1 has described the flow process of the changing method embodiment one that the embodiment of the invention provides, what this embodiment described is the handling process (embodiment is that example is described with IWF) of general access network controller (GANC:GAN Controller) or interconnection functional entity (IWF:Interworking Function), comprising:
101, receive the preceding re-positioning request of changeing; Should precedingly change re-positioning request and comprise professional indication;
The forward pass re-positioning request that IWF receives can directly be sent by Mobility Management Entity; Also can send to switching selection functional entity (HOSF:Handover Selection Function), be transmitted to IWF by HOSF again by Mobility Management Entity; Mobility Management Entity changes re-positioning request before can constructing and send after the handoff request that receives the base station transmission.
Wherein, if this IWF is in the interconnection functional entity resource pool, then HOSF can transmit this forward pass re-positioning request by all IWF in the interconnection functional entity resource pool, be that HOSF broadcasts the forward pass re-positioning request to the interconnection functional entity resource pool, all IWF in the interconnection functional entity resource pool change re-positioning request before can receiving this; After IWF in the interconnection functional entity resource pool has received preceding commentaries on classics redirect request, judge whether the terminal of changeing the re-positioning request correspondence before this has registration at this IWF, if not registration then do not carry out any operation, if there is registration just to carry out follow-up operation;
Further, at this IWF registration is arranged if change the terminal of re-positioning request correspondence before IWF judges, IWF can also send acknowledge message to HOSF, makes HOSF can know that this preceding commentaries on classics re-positioning request can be processed;
102, judgement business indicates whether the professional indication for SRVCC; If enter 103; If not, enter 104;
Can determine preceding type of changeing the included business indication of re-positioning request by this step; The pairing professional indication of different business indications is different, in speech business is when initiating by the SRVCC framework, its corresponding service indication is exactly the professional indication of SRVCC, and the professional indication of SRVCC can be the session Handover Number (STN-SR:Session Transfer Number for SRVCC) at SRVCC; In speech business is when initiating by the CSoPS framework, and its corresponding service indication is exactly the professional indication of CSoPS;
103, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server; Process ends;
Particularly, IWF can by and Mobile Switching Center Server between the Iu-CS/A interface should before change re-positioning request and be sent to the SRVCC Mobile Switching Center Server; Wherein, Iu-CS interface is the interface that RNS (RNS) is connected to circuit domain; The A interface is the interface that base station system (BSS) is connected to circuit domain.After the SRVCC Mobile Switching Center Server has received preceding commentaries on classics re-positioning request, can adopt the SRVCC switching flow to switch.
104, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems; Process ends.
Particularly, IWF can by and the core net circuit domain between the Iu-CS/A interface change the Mobile Switching Center Server that re-positioning request is sent to core net circuit domain in the goal systems before will being somebody's turn to do.After the Mobile Switching Center Server of core net circuit domain has received preceding commentaries on classics re-positioning request in the goal systems, can adopt the CSoPS switching flow to switch.
From the above, because GANC can determine corresponding switching mode according to the indication of the business in the preceding commentaries on classics re-positioning request in the present embodiment, thereby when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, make the Mobile Switching Center Server of core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
Fig. 2 has described the signaling process of the changing method embodiment two that the embodiment of the invention provides, and the base station is the base station (NodeB) in the universal terrestrial access network (E-UTRAN) of evolution in the present embodiment, abbreviates evolution base station (eNB) as; In the present embodiment, general access network controller is IWF, and IWF is under the SRVCC framework, can be same entity with the GANC under the CSoPS framework, and switching judging is carried out by IWF among this embodiment, comprising:
201, subscriber equipment sends measurement report to evolution base station;
202, evolution base station carries out switching judging; Particularly, present embodiment hypothesis evolution base station is 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) based on the measurement report decision of subscriber equipment transmission;
203, evolution base station sends handoff request (Handover Required) to Mobility Management Entity, this handoff request can comprise Target cell number (Target ID), the source end is to the container (Source to Target Transparent Container) of destination end, and wherein the source end comprises service quality rating indication (QCI:QoS Class Identifier) value to the container of destination end.
204, Mobility Management Entity carries separation; 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, change redirect request before the Mobility Management Entity structure, and send to interconnection functional entity; Wherein, before change redirect request and can comprise Target cell number, professional indication, the international comprehensive service digital net number (MSISDN:Mobile Station international ISDN number) of travelling carriage, source end container, MM Context information such as (MM Context) to destination end, specifically can send to interconnection functional entity by the Sv interface.Wherein, professional indication can be professional indication of SRVCC or the professional indication of CSoPS.
The user is when service contracting, at the SRVCC business indication different with the signatory employing of CSoPS, the professional indication of SRVCC can be STN-SR, and the professional indication of CSoPS can be with other sign, as long as can allow interconnection functional entity identification can not influence the realization of the embodiment of the invention; Wherein, the indication of business that Mobility Management Entity obtains can be sent by home subscriber server (HSS:Home Subscriber Server), specifically can carry out EUTRAN at subscriber equipment and send to Mobility Management Entity by HSS when adhering to.In a kind of implementation that the embodiment of the invention provides, home subscriber server can become the professional instruction simulation of CSoPS the professional indication of SRVCC, the professional indication of CSoPS can be modeled to STN-SR in the present embodiment, Mobility Management Entity is discerned professional indication of SRVCC and the professional indication of CSoPS with regard to not needing like this, Mobility Management Entity can all regard the professional indication of SRVCC and the professional indication of CSoPS the SRVCC business and indicate and carry out transparent transmission, thereby when network upgrade, do not need Mobility Management Entity is improved needed investment in the time of to reduce network upgrade.
Before checking, 206a, interconnection functional entity change the business indication in the re-positioning request, if the professional indication of SRVCC, the professional indication of SRVCC specifically can be STN-SR, then be judged as the SRVCC switching flow, then preceding commentaries on classics re-positioning request passed through the SRVCC Mobile Switching Center Server by the A/Iu-CS interface;
Before checking, 206b, interconnection functional entity change the business indication in the re-positioning request, if the STN-SR that is become by the professional instruction simulation of CSoPS, then interconnection functional entity is transmitted to preceding commentaries on classics 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 business indication different.
From the above, because IWF can determine corresponding switching mode according to the indication of the business in the preceding commentaries on classics re-positioning request in the present embodiment, thereby when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, make the Mobile Switching Center Server of core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
Fig. 3 has described the signaling process of the changing method embodiment three that the embodiment of the invention provides, and the base station is the base station (NodeB) in the universal terrestrial access network (E-UTRAN) of evolution in the present embodiment, abbreviates evolution base station (eNB) as; In the present embodiment, general access network controller is IWF, and preceding commentaries on classics 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;
Carry out with reference to 202;
303, evolution base station sends handoff request (Handover Required) to Mobility Management Entity, and this handoff request can comprise Target cell number (Target ID), and the source end is to the container of destination end, and wherein the source end comprises the QCI value to the container of destination end.
304, Mobility Management Entity carries separation; 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 changes redirect request before HOSF sends;
306, change redirect request before HOSF all interconnection functional entities in the interconnection functional entity pond send, such as, n interconnection functional entity arranged in the interconnection functional entity pond, be respectively interconnection functional entity 1, interconnection functional entity 2 ..., interconnection functional entity n;
307, after the interconnection functional entity in the interconnection functional entity pond has received preceding commentaries on classics re-positioning request, judge whether the terminal of this re-positioning request correspondence has registration at this interconnection functional entity; Present embodiment supposes that the terminal of this re-positioning request correspondence has registration at interconnection functional entity n, interconnection functional entity n sends acknowledge message (Acknowledge) to HOSF, so that the selected interconnection functional entity that returns the interconnection functional entity n of confirmation as service of HOSF.
Because preceding commentaries on classics re-positioning request can comprise the sign of corresponding terminal, therefore can judge whether the terminal of this re-positioning request correspondence has registration at this interconnection functional entity according to the sign of terminal.
Before checking, 308a, interconnection functional entity change the business indication in the re-positioning request, if the professional indication of SRVCC, the professional indication of SRVCC specifically can be STN-SR, then be judged as the SRVCC switching flow, then preceding commentaries on classics re-positioning request passed through the SRVCC Mobile Switching Center Server by the A/Iu-CS interface;
Before checking, 308b, interconnection functional entity change the business indication in the re-positioning request, if the STN-SR that is become by the professional instruction simulation of CSoPS, then interconnection functional entity is transmitted to preceding commentaries on classics 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 business indication different.
From the above, because IWF can determine corresponding switching mode according to the indication of the business in the preceding commentaries on classics re-positioning request in the present embodiment, thereby when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, make the Mobile Switching Center Server of core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch; And present embodiment can send to IWF in the interconnection functional entity resource pool with preceding commentaries on classics redirect request by HOSF, can realize the IWF load balancing in the interconnection functional entity resource pool, and stability that can the operation of raising system.
Fig. 4 has described the flow process of the changing method embodiment four of embodiment of the invention raising, and what this embodiment described is the handling process of Mobility Management Entity (MME:Mobility Management Entity), comprising:
401, reception is from the handoff request of base station;
402, structure comprises the preceding commentaries on classics re-positioning request of the business indication of preserving in advance;
The business indication that Mobility Management Entity is preserved in advance can be known in the strategy of setting up the voice dedicated bearer and control (the PCC:Pllicy and Charging Control) process of chargeing and preserve; Particularly, if voice bearer adopts the SRVCC framework to set up, Mobility Management Entity obtains the professional indication of SRVCC in the PCC process; If voice bearer adopts the CSoPS framework to set up, Mobility Management Entity obtains the professional indication of CSoPS in the PCC process.
403, judgement business indicates whether the professional indication for SRVCC; If enter 404; If not, enter 405;
404, before sending, changes the SRVCC Mobile Switching Center Server re-positioning request; Process ends;
Particularly, Mobility Management Entity can directly change re-positioning request by the Sv interface before Mobile Switching Center Server sends; Also preceding commentaries on classics re-positioning request can be sent to general access network controller, the professional indication of SRVCC that the commentaries on classics re-positioning request comprised before the general access network controller basis was somebody's turn to do should preceding commentaries on classics re-positioning request pass through the SRVCC Mobile Switching Center Server.
405, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems.
Particularly, Mobility Management Entity can send to general access network controller with preceding commentaries on classics re-positioning request, and the professional indication of CSoPS that the commentaries on classics re-positioning request comprises before being somebody's turn to do by the general access network controller basis will be somebody's turn to do the Mobile Switching Center Server that preceding commentaries on classics re-positioning request passes through core net circuit domain in the goal systems.
From the above, because MME can determine corresponding switching mode according to the business indication of preserving in advance in the present embodiment, and the business of inserting in preceding commentaries on classics re-positioning request is indicated, thereby make GANC when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make GANC when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
Fig. 5 has described the signaling process of the changing method embodiment five that the embodiment of the invention provides, and in the present embodiment general access network controller is an interconnection functional entity, and switching judging is carried out by MME among this embodiment, comprising:
501, subscriber equipment sends measurement report to evolution base station;
502, evolution base station carries out switching judging; Particularly, present embodiment hypothesis evolution base station is initiated to the switching of GERAN/UTRAN based on the measurement report decision of subscriber equipment transmission;
503, evolution base station sends handoff request to Mobility Management Entity, and this handoff request can comprise Target cell number, and the source end is to the container of destination end, and wherein the source end comprises quality competition power exponential quantity to the container of destination end.
504, Mobility Management Entity carries separation; 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, change redirect request before the Mobility Management Entity structure, change redirect request before this and inserted professional indication; Particularly, Mobility Management Entity is determined corresponding switching mode according to the business indication of preserving in advance, when determining to adopt the SRVCC mode to switch, inserts the professional indication of SRVCC in preceding commentaries on classics redirect request; When determining to adopt the CSoPS mode to switch, in preceding commentaries on classics redirect request, insert the professional indication of CSoPS.
506, Mobility Management Entity sends to interconnection functional entity with preceding commentaries on classics redirect request.
Before checking, 507a, interconnection functional entity change the business indication in the re-positioning request, if the professional indication of SRVCC (STN-SR), then be judged as the SRVCC switching flow, preceding commentaries on classics re-positioning request passed through the SRVCC Mobile Switching Center Server by the A/Iu-CS interface;
Before checking, 507b, interconnection functional entity change the business indication in the re-positioning request, if by the professional indication of CSoPS, then be judged as the CSoPS switching flow, preceding commentaries on classics 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 by A/Iu-CS.
Be understandable that, by interconnection functional entity preceding commentaries on classics re-positioning request passed through Mobile Switching Center Server in the present embodiment; In the practical application, also can directly preceding commentaries on classics re-positioning request be sent to Mobile Switching Center Server by the Sv interface by Mobility Management Entity.
From the above, because MME can determine corresponding switching mode according to the business indication of preserving in advance in the present embodiment, and the business of inserting in preceding commentaries on classics re-positioning request is indicated, thereby make IWF when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make IWF when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
Fig. 6 has described the flow process of the changing method embodiment six of embodiment of the invention raising, and what this embodiment described is the handling process of base station and MME, comprising:
601, the base station is determined to initiate to switch according to the measurement report of subscriber equipment;
602, the base station structure comprises the handoff request of the business indication of preserving in advance; Particularly, corresponding switching mode is determined according to the business indication of preserving in advance in the base station, when determining to adopt the SRVCC mode to switch, inserts the professional indication of SRVCC in handoff request; When determining to adopt the CSoPS mode to switch, in handoff request, insert the professional indication of CSoPS.
Wherein, the base station business indication of preserving in advance can obtain in setting up the PCC process of voice dedicated bearer; Particularly, if voice bearer adopts the SRVCC framework to set up, the base station obtains the professional indication of SRVCC in the PCC process; If voice bearer adopts the CSoPS framework to set up, the base station obtains the professional indication of CSoPS in the PCC process.
603, after Mobility Management Entity received handoff request, structure comprised the preceding commentaries on classics redirect request of professional indication;
When Mobility Management Entity changes redirect request before structure, do not need handoff request is resolved, but the information of directly handoff request being carried encapsulates, because handoff request has comprised professional indication, preceding commentaries on classics redirect request also comprises professional indication.
604, judgement business indicates whether the professional indication for SRVCC; If enter 605; If not, enter 606;
605, before sending, changes the SRVCC Mobile Switching Center Server re-positioning request; Process ends;
Particularly, Mobility Management Entity can directly change re-positioning request by the Sv interface before the SRVCC Mobile Switching Center Server sends; Also preceding commentaries on classics re-positioning request can be sent to general access network controller, the professional indication of SRVCC that the commentaries on classics re-positioning request comprises before being somebody's turn to do by the general access network controller basis should preceding commentaries on classics re-positioning request pass through the SRVCC Mobile Switching Center Server.
606, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems.
Particularly, Mobility Management Entity can send to general access network controller with preceding commentaries on classics re-positioning request, and the professional indication of CSoPS that the commentaries on classics re-positioning request comprises before being somebody's turn to do by the general access network controller basis should preceding commentaries on classics re-positioning request pass through Mobile Switching Center Server.
From the above, because corresponding switching mode can be determined according to the business indication of preserving in advance in the base station in the present embodiment, and the business of inserting in handoff request is indicated, thereby make MME when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make MME when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
Fig. 7 has described the signaling process of the changing method embodiment seven that the embodiment of the invention provides, and in the present embodiment general access network controller is an interconnection functional entity, and switching judging is carried out by evolution base station among this embodiment, comprising:
701, subscriber equipment sends measurement report to evolution base station;
702, evolution base station carries out switching judging; Particularly, present embodiment hypothesis evolution base station is initiated to the switching of GERAN/UTRAN based on the measurement report decision of subscriber equipment transmission;
703, evolution base station structure handoff request is inserted professional indication in handoff request; This handoff request can also comprise Target cell number, and the source end is to the container of destination end, and wherein the source end comprises quality competition power exponential quantity to the container of destination end.
Particularly, corresponding switching mode is determined according to the business indication of preserving in advance in the base station, when determining to adopt the SRVCC mode to switch, inserts the professional indication of SRVCC in handoff request; When determining to adopt the CSoPS mode to switch, in handoff request, insert the professional indication of CSoPS.
704, evolution base station sends handoff request to Mobility Management Entity;
705, Mobility Management Entity carries separation; 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, change redirect request before the Mobility Management Entity structure; When Mobility Management Entity changes redirect request before structure, do not need handoff request is resolved, but the information of directly handoff request being carried encapsulates, change redirect request before therefore and comprised professional indication.
707, Mobility Management Entity is checked the business indication in the handoff request, if the professional indication of SRVCC then is judged as the SRVCC switching flow, by the Sv interface preceding commentaries on classics re-positioning request is passed through the SRVCC Mobile Switching Center Server;
708, Mobility Management Entity is checked the business indication in the handoff request, if the professional indication of CSoPS then is judged as the CSoPS switching flow, preceding commentaries on classics re-positioning request is sent to interconnection functional entity;
709, interconnection functional entity passes through preceding commentaries on classics re-positioning request the Mobile Switching Center Server of core net circuit domain in the goal systems.
Be understandable that, Mobility Management Entity can not judged professional knowledge yet, directly preceding commentaries on classics re-positioning request is sent to interconnection functional entity, according to the business indication preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in SRVCC Mobile Switching Center Server or the goal systems by interconnection functional entity.
From the above, because evolution base station can be determined corresponding switching mode according to the business indication of preserving in advance in the present embodiment, and the business of inserting in handoff request is indicated, thereby make MME when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make MME when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
Need to prove, previous embodiment of the present invention mainly describes with second generation mobile communication (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 invention to provide for code division multiple access (CDMA) 1xRTT domain core net 1xRTT MSC/VLR the time is handled, and this specification repeats no more.
It is that LTE/ System Architecture Evolution (SAE) gruping insertion network describes that previous embodiment of the present invention mainly connects Access Network (IP-CAN:IP Connectivity Access Network) with IP, at IP-CAN is that high-speed packet inserts (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 invention to provide during super mobile broadband IP access networks such as (UMB:Ultra Mobile Broadband) is handled, and this specification repeats no more.And the embodiment of the invention can also be supported IP access technology independence, therefore also be applicable to the hand-off process when the user passing through Asymmetrical Digital Subscriber Line (ADSL:Asymmetric Digital Subscriber Line) etc. fixedly access way being linked into the 2G/3G circuit domain, provide prerequisite for the fixing networking telephone (the VoIP:Voice over Internet Protocol) solution that merges that moves is provided.
The structure of the universal network controller embodiment that the embodiment of the invention provides comprises as shown in Figure 8:
Receiving element 801 is used to receive the preceding commentaries on classics re-positioning request from Mobility Management Entity, changes re-positioning request before this and comprises professional indication;
Determining unit 802 is used for determining the type of the business indication that preceding commentaries on classics re-positioning request that receiving element 801 receives is included;
Transmitting element 803 is used for when determining unit 802 determines that business is designated as the professional indication of SRVCC preceding commentaries on classics re-positioning request being sent to the SRVCC Mobile Switching Center Server; When determining unit 802 determines that business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the core net circuit domain.
From the above, because GANC can determine corresponding switching mode according to the indication of the business in the preceding commentaries on classics re-positioning request in the present embodiment, thereby when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, make the Mobile Switching Center Server of core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
The structure of the Mobility Management Entity embodiment that the embodiment of the invention provides comprises as shown in Figure 9:
Receiving element 901 is used to receive the handoff request from the base station;
Transmitting element 903 is used for changeing re-positioning request before the SRVCC Mobile Switching Center Server sends when the included business of preceding commentaries on classics redirect request of structural unit 902 structures is designated as the professional indication of SRVCC; When the included business of preceding commentaries on classics redirect request of structural unit 902 structures is designated as the professional indication of CSoPS, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems.
From the above, because MME can determine corresponding switching mode according to the business indication of preserving in advance in the present embodiment, and the business of inserting in preceding commentaries on classics re-positioning request is indicated, thereby make GANC when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make GANC when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
The structure of the base station embodiment that the embodiment of the invention provides comprises as shown in figure 10:
Receiving element 1001 is used to receive the measurement report from subscriber equipment;
Determining unit 1002 is used for determining to initiate to switch according to the measurement report that receiving element 1001 receives;
Transmitting element 1004 is used to send the handoff request that structural unit 1003 is constructed.
From the above, because corresponding switching mode can be determined according to the business indication of preserving in advance in the base station in the present embodiment, and the business of inserting in handoff request is indicated, thereby make MME when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make MME when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
The structure of the communication system embodiment one that the embodiment of the invention provides comprises as shown in figure 11:
General access network controller 1101 is used to receive the preceding commentaries on classics re-positioning request from Mobility Management Entity 1102, changes re-positioning request before this and comprises professional indication; Change the type of the included business indication of re-positioning request before determining; When business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to SRVCC Mobile Switching Center Server 1103; When business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server 1104 of core net circuit domain in the goal systems.
From the above, because GANC can determine corresponding switching mode according to the indication of the business in the preceding commentaries on classics re-positioning request in the present embodiment, thereby when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, make the Mobile Switching Center Server of core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
The structure of the communication system embodiment two that the embodiment of the invention provides comprises as shown in figure 12:
From the above, because MME can determine corresponding switching mode according to the business indication of preserving in advance in the present embodiment, and the business of inserting in preceding commentaries on classics re-positioning request is indicated, thereby make GANC when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make GANC when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
The structure of the communication system embodiment three that the embodiment of the invention provides comprises as shown in figure 13:
From the above, because corresponding switching mode can be determined according to the business indication of preserving in advance in the base station in the present embodiment, and the business of inserting in handoff request is indicated, thereby make MME when business is designated as the professional indication of SRVCC, preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server, and then make the SRVCC Mobile Switching Center Server can adopt the SRVCC switching flow to switch, make MME when business is designated as the professional indication of CSoPS, preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems, and then the Mobile Switching Center Server that makes core net circuit domain in the goal systems can adopt the CSoPS switching flow to switch, thus correctly carrying out of guaranteeing to switch.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
More than a kind of changing method, communication system and relevant device that the embodiment of the invention provided are described in detail, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (15)
1. a changing method is characterized in that, comprising:
Change re-positioning request before receiving, change re-positioning request before this and comprise professional indication;
Determine the type of described professional indication;
When business is designated as the professional indication of voice continuity SRVCC between single-receiver IP multimedia subsystem, IMS and the circuit domain, will be described before the commentaries on classics re-positioning request be sent to the SRVCC Mobile Switching Center Server; Be designated as when being connected to the professional indication of data field core net CSoPS in described business, change the Mobile Switching Center Server that re-positioning request is sent to core net circuit domain in the goal systems before will be described through the circuit domain Access Network.
2. changing method as claimed in claim 1 is characterized in that, the professional indication of described CSoPS is modeled into the form of the professional indication of SRVCC.
3. changing method as claimed in claim 1 or 2 is characterized in that, the described preceding re-positioning request of changeing of reception is from Mobility Management Entity or switching selection functional entity.
4. changing method as claimed in claim 3 is characterized in that, receives the described preceding re-positioning request of changeing by interconnection functional entity, and described interconnection functional entity belongs to the interconnection functional entity pond, and described interconnection functional entity pond comprises a plurality of interconnection functional entities;
Change re-positioning request before the described reception, comprise before:
Described switching selection functional entity is changeed re-positioning request before described a plurality of interconnection functional entities send.
5. changing method as claimed in claim 3 is characterized in that, the described preceding re-positioning request of changeing of reception is come adaptive switched selection functional entity, further comprises after the commentaries on classics re-positioning request before receiving:
Whether the terminal of judging described re-positioning request correspondence has registration;
If carry out and determine described preceding step of changeing the type of the included business indication of re-positioning request.
6. changing method as claimed in claim 5 is characterized in that, if the terminal of described re-positioning request correspondence has registration, this method also comprises:
Send acknowledge message to described switching selection functional entity, so that the selected interconnection functional entity that returns the interconnection functional entity of described confirmation as service of described switching selection functional entity.
7. a changing method is characterized in that, comprising:
Reception is from the handoff request of base station;
Structure comprises the preceding commentaries on classics re-positioning request of professional indication;
When business is designated as the professional indication of SRVCC, before sending, changes the SRVCC Mobile Switching Center Server re-positioning request; When business is designated as the professional indication of CSoPS, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems.
8. changing method as claimed in claim 7 is characterized in that, described structure comprises that the preceding commentaries on classics re-positioning request of professional indication comprises:
Structure comprises in advance the preceding commentaries on classics re-positioning request of the business indication of preserving, and described business indication of preserving is in advance known in the strategy of setting up the voice dedicated bearer and charging control procedure and preserved.
9. changing method as claimed in claim 7 is characterized in that, described handoff request is that the described base station that comprises of structure was preserved the handoff request of professional indication in advance after described base station was determined to initiate to switch according to the measurement report of subscriber equipment;
Described structure comprises that the preceding commentaries on classics re-positioning request of professional indication comprises:
Structure comprises the preceding commentaries on classics re-positioning request of the business indication that described handoff request is included.
10. as the arbitrary described changing method of claim 7 to 9, it is characterized in that, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems and be specially:
Preceding commentaries on classics re-positioning request is sent to the Mobile Switching Center Server of core net circuit domain in the goal systems by general access network controller.
11. as the arbitrary described changing method of claim 7 to 9, it is characterized in that, before the SRVCC Mobile Switching Center Server sends, change re-positioning request and be specially:
By general access network controller preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server; Or,
Directly preceding commentaries on classics re-positioning request is sent to the SRVCC Mobile Switching Center Server.
12. a universal network controller is characterized in that, comprising:
Receiving element is used to receive the preceding commentaries on classics re-positioning request from Mobility Management Entity, changes re-positioning request before this and comprises professional indication;
Determining unit is used for determining the type of the business indication that preceding commentaries on classics re-positioning request that described receiving element receives is included;
Transmitting element is used for being sent to the SRVCC Mobile Switching Center Server with changeing re-positioning request before described when described determining unit determines that business is designated as the professional indication of SRVCC; When described determining unit determines that business is designated as the professional indication of CSoPS, the Mobile Switching Center Server that re-positioning request is sent to core net circuit domain in the goal systems will be changeed before described.
13. a Mobility Management Entity is characterized in that, comprising:
Receiving element is used to receive the handoff request from the base station;
Structural unit is used for after described receiving element has received handoff request, and structure comprises the preceding commentaries on classics re-positioning request of the business indication of preserving in advance;
Transmitting element is used for changeing re-positioning request before the SRVCC Mobile Switching Center Server sends when the included business of preceding commentaries on classics redirect request of described structural unit structure is designated as the professional indication of SRVCC; When the included business of preceding commentaries on classics redirect request of described structural unit structure is designated as the professional indication of CSoPS, change re-positioning request before the Mobile Switching Center Server of core net circuit domain sends in goal systems.
14. a base station is characterized in that, comprising:
Receiving element is used to receive the measurement report from subscriber equipment;
Determining unit, the measurement report that is used for receiving according to described receiving element are determined to initiate to switch;
Structural unit is used for when described determining unit is determined to initiate to switch, and structure comprises the handoff request of the business indication of preserving in advance;
Transmitting element is used to send the handoff request that described structural unit is constructed.
15. a communication system is characterized in that, comprises universal network controller as claimed in claim 12; Or
Comprise Mobility Management Entity as claimed in claim 13;
Or comprise base station as claimed in claim 14.
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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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| 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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| CN101848515A true CN101848515A (en) | 2010-09-29 |
| CN101848515B CN101848515B (en) | 2014-04-02 |
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| CN200910129491.9A Expired - Fee Related CN101848515B (en) | 2009-03-25 | 2009-03-25 | Switching method, communication system and related equipment |
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| WO2012097509A1 (en) * | 2011-01-19 | 2012-07-26 | 华为技术有限公司 | Handover method and mobility management network element |
| WO2014059647A1 (en) * | 2012-10-18 | 2014-04-24 | 华为技术有限公司 | Method, apparatus and system for processing data-field service |
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| CN108206898A (en) * | 2016-12-20 | 2018-06-26 | 展讯通信（上海）有限公司 | Realize the method, apparatus of multi-party call and mostly logical 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 |
| CN113133071A (en) * | 2020-01-16 | 2021-07-16 | 大唐移动通信设备有限公司 | Data forwarding method and base station |
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| CN100512526C (en) * | 2004-11-26 | 2009-07-08 | ***通信集团公司 | Method and system for proxy re-orienting terminal request |
| CN101227454B (en) * | 2007-01-16 | 2011-03-16 | 中兴通讯股份有限公司 | Method for transmitting multicast business adding with indication |
| CN101370266B (en) * | 2007-08-19 | 2013-03-20 | 华为技术有限公司 | Switching method and terminal re-adhesion method |
| CN101389127A (en) * | 2007-09-12 | 2009-03-18 | 华为技术有限公司 | Redirection method, system, customer equipment and wireless network control unit |
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| 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 |
| CN110710261A (en) * | 2018-01-19 | 2020-01-17 | Oppo广东移动通信有限公司 | Handover processing method, network device, UE, and computer storage medium |
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