CN101998357A - Network management circuit switched voice falling method and system - Google Patents
Network management circuit switched voice falling method and system Download PDFInfo
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- CN101998357A CN101998357A CN2009101681023A CN200910168102A CN101998357A CN 101998357 A CN101998357 A CN 101998357A CN 2009101681023 A CN2009101681023 A CN 2009101681023A CN 200910168102 A CN200910168102 A CN 200910168102A CN 101998357 A CN101998357 A CN 101998357A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a network management circuit switched voice falling method and system. The network management circuit switching voice falling method comprises the following steps of: sending a request of joint registration or joint position updating of an EPS (Evolved Packet System) network and a CS (circuit switched) network in the EPS network by UE (User Equipment) with voice center attributes; and if the EPS network unsuccessfully sends the position updating to the CS network and the EPS network does not support IMS (IP Multimedia Subsystem) voice services, judging that the UE has the voice center attributes and refusing the request of the UE by the EPS network. The invention can save the network resources and increases the connection speed of the UE to a wireless network supporting the voice services.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and system that a kind of network management CS (Circuit Switched is called for short CS) voice fall after rise.
Background technology
In order to keep the strong competitiveness of 3-G (Generation Three mobile communication system), must improve its network performance and reduce networking and operation cost at moving communicating field.Therefore, 3GPP (3rd GenerationPartnership Project, third generation partner program) standardization effort group is just being endeavoured research at present to PS Core (Packet Switched Core, packet switched core network) and UTRAN (UniversalMobile Telecommunication System Radio Access Network, the global system for mobile communications wireless access network) evolution, purpose is to make the PS Core ((be called for short EPC) of evolution that higher transmission rate can be provided, shorter transmission delay, and support E-UTRAN (Evolved UTRAN, the UTRAN of evolution), GERAN (GSM EDGE radio access network, GSM EDGE wireless access network, wherein GSM is the abbreviation of Global System for Mobile communications, it is global system for mobile communications, EDGE is the abbreviation of Enhanced Data Rate for GSM Evolution, be the enhanced data rates for gsm evolution technology), UTRAN, mobile management between the access network of WLAN (Wireless Local AreaNetwork, WLAN (wireless local area network)) and other non-3GPP.The mobile communication system of this evolution just is called as EPS (Evolved Packet System, the grouping domain system of evolution), and its basic framework is as shown in Fig. 1 frame of broken lines.Each entity declaration is as follows among Fig. 1:
UE (User Equipment, subscriber equipment, or be called terminal) and 101: have the terminal that can insert two kinds of wireless network abilities and be called dual-mode terminal.According to the ability of while access of radio network, dual-mode terminal can be divided into the single wireless channel access again and two wireless channels access terminal.The former can only insert a kind of wireless network at one time; The latter can be linked in two kinds of Radio Access Networks simultaneously.
E-UTRAN 102: the wireless access network of evolution can provide higher up-downgoing speed, lower transmission delay and reliable more wireless transmission.
S-GW (Serving Gateway, gateway) 103 is user entities, is responsible for the user face data route and handles.
P-GW (Packet Data Network Gateway, packet data network gateway are called for short PDN GW or P-GW) 104 is responsible for the gateway function that UE inserts PDN (Packet Data Network, Packet Data Network).P-GW and S-GW may close and be located in the physical entity.
MME (Mobility Management Entity, Mobility Management Entity) 105, it is a chain of command entity, the server of interim storaging user data, be in charge of and store UE context (such as UE/ user ID, mobility management states, user security parameters etc.), for the user distributes temporary mark, when quartering at this tracing area or this network, is responsible for UE this UE is carried out authentication.
HSS (Home Subscriber Server, home subscriber server) 106 comprises HLR (HomeLocation Register, attaching position register) function, preserves user's master data and business datum.
IP (Internet Protocol, Internet protocol) IP multimedia subsystem, IMS (IP Multimedia CoreNetwork Subsystem, be called for short IMS) be a kind of IP-based network framework that proposes by 3GPP, it has made up an opening and service environment flexibly, support multimedia application, and provide abundant multimedia service for the user.IMS is based on the communication network framework of IP, irrelevant with access technology, except being EPS, GPRS (General Packet Radio Service, GPRS), WLAN (Wireless Local Area Network, WLAN (wireless local area network)) etc. packet access network provides outside the business, also can provide professional for GSM, UMTS mobile cellular networks such as (Universal Mobile Telecommunications System, universal mobile telecommunications system).
GERAN/UTRAN 107: the wireless access network of traditional GSM/UMTS network.
MSC (Mobile Switching Center, mobile switching centre)/VLR (Visitor LocationRegister, VLR Visitor Location Register) 108, wherein, VLR is usually located on the MSC.
GMSC (Gateway Mobile Switching Center, gateway MSC) 109.
SGSN (Serving GPRS Support Node, the GPRS serving GPRS support node) 110, it is the control network element of GPRS network, main effect is the positional information of record UE, and between UE and GGSN (Gateway GPRS Supporting Node, GGSN), finish the transmission and the reception of mobile packet data.
As UE during in GSM or UMTS network insertion, user's basic speech business and provide by CS territory (or being called the CS network) based on the supplementary service of speech business, MSC/VLR among Fig. 1, GMSC belong to the CS domain network element, the user by the CS territory can with Home Network in or the user of other network (such as fixed-line telephone network, other mobile network) carry out audio call class business.User's IP operation provides by PS (Packet Switched, packet switching) territory.SGSN belongs to the PS domain network element among Fig. 1.The user visits Packet Data Network by the PS territory, and the IP network that operator provides among Fig. 1 is exactly a Packet Data Network.
In the prior art, the interface between MSC/VLR and the SGSN is called Gs interface.MSC/VLR was by the UE of PS territory paging to the called subscriber after Gs interface was finished and set up Gs incidence relation (preserve VLR number at SGSN, preserve the SGSN number at VLR) and setting up the Gs incidence relation between MSC/VLR and SGSN.
In the prior art, the interface between MSC/VLR and the MME is called the SGs interface.The SGs interface is finished and set up SGs incidence relation (preserve VLR number at MME, preserve the MME address at VLR) between MSC/VLR and MME.
As UE during in the EPS network insertion, user's basic speech business and based on the supplementary service of speech business by IMS control, EPS system itself can not provide and control voice call service, and the carrying of IP data can only be provided.But when the EPS network design, some operator only disposes the EPS network in the key area that the UMTS/GSM network has covered, be used for providing IP data service at a high speed for the user, there be not (or not thinking) to dispose IMS, under this kind scene, operator wishes to provide CS Networks such as voice call service, short message service, positioning service, non-structured supplementary service by the UMTS/GSM CS network that covers comprehensively.But for the dual-mode terminal of single wireless channel, the user just can't carry out above-mentioned business such as audio call when inserting the EPS network.In order to guarantee that the user can carry out business such as audio call, a kind of the simplest also be that the solution of unique support of 3GPP present stage is exactly to carry out audio call etc. when professional, allow UE switch to the network insertion from UMTS/GSM from the EPS network insertion, network is realized speech business in UMTS/GSM CS territory.When UE when the EPS network is initiated audio call, notice EPS network earlier, the EPS network switches to the GSM/UMTS network with UE, makes UE carry out speech business at the CS network.The user switches to UMTS/GSM PS territory network in the current ongoing IP operation of EPS network, if ongoing IP operation can not switch to UMTS/GSM PS territory, just hangs up in the EPS network or release.Here it is usually said circuit domain dropping (CS fallback perhaps is called CS and falls after rise).
Existing circuit domain dropping implementation method is roughly as follows: introduce the interface of a similar Gs between MME and MSC/VLR, be called SGs (as shown in fig. 1).When the UE start inserts the EPS network, set up SGs incidence relation (in MME, preserve VLR number, in VLR, preserve the MME address) by the SGs interface between MME and the MSC/VLR.Follow-up when the user is mobile in network, user's latest position information can be updated to MME, if MME changes, the MME information of preserving among the VLR also can be upgraded, and the MME information of preserving among the assurance VLR accurately always.
When inserting the business such as UE initiation audio call of EPS network, UE sends a specific message to E-UTRAN, E-UTRAN initiates switching flow after receiving this message, the current ongoing IP operation of user switched to UMTS/GSM PS network or in the hang-up of EPS network etc., UE inserts the UMTS/GSM network and initiates professional flow process such as audio call at the CS network then.
During as called (the receiving business such as audio call) of CS business, MSC/VLR sends out the CS beep-page message for the EPS network by the SGs interface at the UE that inserts the EPS network, and the EPS network receives the CS paging request message, carries out circuit domain dropping.
If network is not supported the IMS speech business, UE can only fall technology after rise by CS, adopts CS network implementation realize voice business.Have UE that CS falls ability after rise and adhere to and as described below, see Fig. 2 to the prior art of CS network combined registering at the EPS network.
EPS and CS attachment flow that UE initiates comprise following steps:
Step 201, UE is to initiating to adhere to request by E-UTRAN to MME, in request message, carry " type of attachment " parameter, that type of attachment sign UE asks is EPS and IMSI (InternationalMobile Subscriber Identity, international mobile subscriber identity) combined registering, and informing network UE can use the CS network.
Step 202, MME authenticates UE, downloads the subscription data of UE from HSS, and sets up default bearing to S-GW and P-GW application.
Step 203, MME distributes the LAI (Location AreaIdentifier, lane place identification code) of the acquiescence of a local configuration, and according to the number that the LAI that distributes finds VLR, initiates position updating request to MSC/VLR then.
Step 204, MME sends position updating request to VLR, comprises new LAI in the message, IMSI, the IP address of MME, information such as position updating type.
Step 205 is set up the Security Association on the carrying SGs mouth between VLR and the MME.
Step 206, VLR is in CS territory executing location renewal process.
Step 207, after position, CS territory was upgraded successfully, VLR upgraded success message to the MME home position, carries VLR TMSI (Temporary Mobile Subscriber Identity, temporary mobile subscriber identity) in the message.
Step 208, MME sends and to adhere to success message to UE, in the message except that the relevant parameter that carries EPS, carry the CS position simultaneously and upgrade relevant parameter, as LAI, parameters such as VLR TMSI, UE judges the combined registering success, and the mode that UE can adopt CS to fall after rise realizes speech business.
UE with CS falling ability carries out TAU (Tracked Area Update, tracking area update) and as described below to the prior art of CS network co-location renewal at the EPS network, sees Fig. 3.
The TA/LA (tracing area and the band of position) that UE initiates more new technological process comprises following steps:
Step 301, UE finds to move to new TA, and new TA does not belong to the TA tabulation of former MME, and UE need carry out more new technological process of TA/LA, and rebulids the SGs Security Association.
Step 302, UE initiates the TAU request to target MME, carries the updating type parameter in the request message, and indicating this is the request of TA/LA associated update.
Step 303, EPS network are carried out the TAU process, and target MME downloads the user contracting data of UE from HSS, and set up default bearing to S-GW and P-GW application, carry out UE switches to target MME from former MME process.
Step 304, in MM (Mobility Management, the mobile management) context VLR alliance information being arranged, the VLR alliance information need be according to new LA information updating.Target MME initiates position updating request to VLR, carries new LAI, IMSI, the IP address of MME, position updating type.It is a normal position updating process that the position updating type is indicated this.
Step 305, VLR carries out the position updating process in CS territory.
Step 306, after position, CS territory was upgraded successfully, VLR upgraded success message to the MME home position, carries VLR TMSI in the message.
Step 307, MME returns TAU to UE and accepts message, and carries the CS position and upgrade successful parameter, as LAI, parameters such as VLR TMSI, indication is upgraded successfully at CS also position.The EPC network also can will support IMS session indication to issue UE if support the IMS session simultaneously.
As mentioned above, in the prior art, UE is attached to EPS and realizes that speech business employing UE can carry out the flow process of EPS/CS combined registering or TA/LA position Renewal Design, can guarantee that UE can normally use speech business.
In the prior art, UE has two kinds of optional attributes, and one is that " voice centric " is voice center attribute, if UE is a voice center attribute, just need can carry out speech business at any time attached to the wireless network with speech business ability.Another kind is that " Data centric " is data center's attribute, if UE is data center's attribute, then needs and can realize data service at any time, as online, data download etc. attached to the EPS network of support voice business not.
The register flow path of initiating for UE, if UE can't the combined registering success, UE is again " voicecentric " attribute, must realize speech business, existing solution is as described below, sees Fig. 4:
Step 401, UE selects by the user or be signatory is the UE of " voice centric " attribute, needs to realize speech business.UE carries " type of attachment " parameter to initiating to adhere to request to MME by E-UTRAN in request message, what type of attachment sign UE asked is the EPS/IMSI combined registering, and informing network UE can use the CS network.
Step 402, MME authenticates UE, downloads the subscription data of UE from HSS, and sets up default bearing to S-GW, P-GW application.
Step 403, MME distributes the LAI of the acquiescence of a local configuration, and according to the number that the LAI that distributes finds VLR, initiates position updating request to MSC/VLR then.
Step 404, MME sends position updating request to VLR, comprises new LAI in the message, IMSI, the IP address of MME, information such as position updating type.
Step 405 is set up the Security Association on the carrying SGs mouth between VLR and the MME, and in CS territory executing location renewal process.If CS network authentication failure,, can cause the CS position to upgrade failure as the signatory reason such as limited of no user data, user.
Step 406, VLR upgrades failed message with the position and returns to MME.
Step 407, MME sends and to adhere to success message to UE, only carries the relevant parameter of EPS in the message, does not carry the CS position and upgrades relevant parameter, and UE can judge that EPS adheres to success but CS adheres to unsuccessfully, and UE can't be attached to EPS network implementation realize voice business.
Step 408, it is " voice centric " attribute that UE judges, needs to realize speech business.
Step 409, UE initiatively initiates de-registration request to the EPS network, and cancellation is attached to the EPS network of CS combined registering failure.
Step 410～411, EPS network are released to the resource that UE sets up, and the success of notice UE deregistration.
Step 412, the wireless network that UE need attempt seeking other adheres to and combined registering, if the unsuccessful flow process of combined registering with regard to repeating step 401～411, up to searching out available CS network.
As mentioned above, be set at UE under " Voice Centric " attribute, if when EPS/CS combined registering failure and EPS do not support the IMS session, UE can be attached to EPS, calls out but can not initiate CS by IMS or CS territory.Even adhere to successfully at EPS, UE also needs to carry out EPS and nullifies, and attempts at other RAT (Radio Access Technology, wireless access technology) network registry.More than once registration of EPS/CS and the log off procedure of this moment have taken limited Internet resources;
UE also may constantly attempt other E-UTRAN and register, and will consume more Internet resources, and UE can not use the CS business during this period, has had a strong impact on that user's voice is professional to be used and user experience.
The TAU/LAU position of initiating for UE is new technological process more, if UE can't co-location upgrade successfully, UE is again " voice centric " attribute, must realize speech business, and existing solution is as described below, sees Fig. 5:
Step 501, UE selects by the user or be signatory is the UE of " voice centric " attribute, needs to realize speech business, and has been attached to the EPS/CS network.When UE moves to new TA, new TA does not belong to the TA tabulation of former MME, and UE need carry out more new technological process of TA/LA, and rebulids the SGs Security Association.
Step 502, UE initiates the TAU request to target MME, carries the updating type parameter in the request message, and indicating this is the request of TA/LA associated update.
Step 503, EPS network are carried out the TAU process, and target MME downloads the user contracting data of UE from HSS, and set up default bearing to S-GW and P-GW application, and UE switches to target MME from former MME.
Step 504, for the VLR alliance information is arranged in the MM context, the VLR alliance information need be according to new LA information updating.Target MME initiates position updating request to VLR, carries channel LAI, IMSI, the IP address of MME, position updating type.It is a normal position updating process that the position updating type is indicated this.
Step 505, VLR carries out the position updating process in CS territory.If CS network authentication failure,, can cause the CS position to upgrade failure as the signatory reason such as limited of no user data, user.
Step 506, VLR upgrades failed message with the position and returns to MME.
Step 507, MME sends and to adhere to success message to UE, only carries the relevant parameter of EPS in the message, does not carry the CS position and upgrades relevant parameter, and UE can judge that EPS adheres to success but CS adheres to unsuccessfully, and UE can't be attached to EPS network implementation realize voice business.
Step 508, it is " voice centric " attribute that UE judges, needs to realize speech business;
Step 509, UE initiatively initiates de-registration request to the EPS network, and cancellation is attached to the EPS network of CS combined registering failure;
Step 510～511, EPS network are released to the resource that UE sets up, and by the UE deregistration success.
Step 512, the wireless network that UE need attempt seeking other adheres to and combined registering, if the unsuccessful flow process of combined registering with regard to repeating step 501～511, up to searching out available CS network.
As mentioned above, be set at UE under " Voice Centric " attribute, if when TA/LA associated update failure and EPS do not support the IMS session, UE can be updated to new EPS wireless network in the position, calls out but can not initiate CS by IMS or CS territory.Even upgrade successfully in the EPS position, UE also needs to carry out EPS and nullifies, and attempts at other RAT network registry.More than once registration of EPS/CS and the log off procedure of this moment have taken limited Internet resources;
UE also may constantly attempt other E-UTRAN and adhere to, and will consume more Internet resources, and UE can not use the CS business during this period, has had a strong impact on that user's voice is professional to be used and user experience.
Summary of the invention
The technical problem to be solved in the present invention is exactly to propose the method and system that a kind of network management circuit switched voice falls after rise, solve UE combined registering or co-location renewal failure in the EPS network in the prior art, the EPS network is when support voice is professional, UE need initiatively initiate EPS and nullify, and causes the problem that consumes more Internet resources.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of network management circuit switched voice falls after rise, comprising:
The subscriber equipment (UE) of voice center attribute is initiated request that the combined registering of EPS network and circuit switching (CS) network or co-location upgrade in grouping domain system (EPS) network of evolution after, if described EPS network upgrades failure to the position that the CS network is initiated, and described EPS network is not supported IP Multimedia System (IMS) speech business, described EPS network judges that described UE is a voice center attribute, refuses the request of described UE.
Further, said method also can have following characteristics:
Described UE initiates request that the combined registering of EPS network and CS network or co-location upgrade in the EPS network after, described EPS network is attempted initiating the position to the CS network earlier and is upgraded, if the position is upgraded successfully, sets up EPS again and carries.
Further, said method also can have following characteristics:
Described EPS network judges that described UE is the step of voice center attribute, specifically is meant:
The property parameters that the network based described UE of described EPS carries when initiating request that combined registering or co-location upgrade in the EPS network judges that described UE is a voice center attribute;
Perhaps, the property parameters in the subscription data of the network based described UE of described EPS judges that described UE is a voice center attribute.
Further, said method also can have following characteristics:
Described EPS network is refused in the message of request of described UE, carries the wireless network address tabulation of support voice business;
Described UE attempts being attached to the wireless network of other support voice business according to the wireless network address tabulation of the described support voice business that receives.
Further, said method also can have following characteristics:
If described EPS network is refused in the message of request of described UE, do not carry the wireless network address tabulation of support voice business, then described UE directly initiates CS to 2G or 3G wireless network and adheres to.
Further, said method also can have following characteristics:
Described EPS network is refused the reason of carrying refusal in the message of request of described UE, informs not support voice business of described UE wireless network.
In order to solve the problems of the technologies described above, the system that the present invention also provides a kind of network management circuit switched voice to fall after rise comprises UE and EPS network,
Described UE is a voice center attribute, is used for initiating the combined registering of EPS network and CS network or the request that co-location is upgraded at the EPS network;
Described EPS network is not supported the IMS speech business, after being used to receive the request of described UE initiation combined registering or co-location renewal, if fail to the position renewal that the CS network is initiated, and judges that described UE is a voice center attribute, then refuses the request of described UE.
Further, said method also can have following characteristics:
Described EPS network is attempted initiating the position to the CS network earlier and is upgraded after being further used for receiving the request of described combined registering or co-location renewal, upgrades successfully as if the position, sets up the EPS carrying again.
Further, said method also can have following characteristics:
The property parameters that described EPS network carries when being further used for initiating request that combined registering or co-location upgrade according to described UE in the EPS network or according to the property parameters in the subscription data of described UE judges that described UE is a voice center attribute.
Further, said method also can have following characteristics:
Described EPS network is further used in the message of the request of the described UE of refusal, carries the wireless network address tabulation of support voice business;
Described UE is further used for the wireless network address tabulation according to the described support voice business that receives, and selects to insert the wireless network of other support voice business.
By the present invention, behind combined registering or co-location renewal failure that UE initiates, the EPS network does not need to carry for UE sets up new EPS again, and UE does not need initiatively to initiate EPS yet and nullifies, and directly can attempt being attached to the wireless network of support voice business.Save the precious resources of network greatly, also greatly improved the speed that UE is connected to the wireless network of support voice business, improved the user experience that the user carries out speech business to a certain extent.
Description of drawings
Fig. 1 falls the framework schematic diagram of function after rise for the existing voice of realizing;
Fig. 2 carries out the flow chart of combined registering for existing UE with voice falling ability at EPS network/CS network;
Fig. 3 carries out the flow chart that co-location is upgraded for existing UE with voice falling ability at EPS network/CS network;
Fig. 4 carries out the combined registering failure for existing UE with voice falling ability at EPS network/CS network flow chart;
Fig. 5 carries out the flow chart that co-location is upgraded failure for existing UE with voice falling ability at EPS network/CS network;
Fig. 6 carries out the combined registering failure for the UE with voice falling ability of the present invention at EPS network/CS network flow chart;
Fig. 7 carries out the flow chart that co-location is upgraded failure for the UE with voice falling ability of the present invention at EPS network/CS network.
Embodiment
In the present invention, the UE of voice center attribute initiates request that the combined registering of EPS network and CS network or co-location upgrade in the EPS network after, if described EPS network upgrades failure to the position that the CS network is initiated, and described EPS network is not supported the IMS speech business, described EPS network judges that described UE is a voice center attribute, directly refuses the request of described UE.
Like this, described UE can in time attempt being attached to the wireless network of other support voice business.
Preferably, UE initiates request that the combined registering of EPS network and CS network or co-location upgrade in the EPS network after, described EPS network is attempted initiating the position to the CS network earlier and is upgraded, if the position is upgraded successfully, sets up EPS again and carries; If failure is upgraded in the position, then no longer set up the EPS carrying.
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
Embodiment one
Referring to Fig. 6, the EPS network is not supported the IMS speech business, and UE need adopt CS network implementation realize voice business by CS falling technology.After UE initiates the combined registering request, if the EPS network carries out failing when the position is upgraded at CS, the EPS network need judge whether UE is the UE of voice center attribute, if voice center attribute, just directly refuse the request of adhering to of UE, and notifying UE not support voice business, UE attempts connecting to other support voice network.
UE initiates in the present embodiment one EPS and CS attachment flow comprise following steps:
Step 601, UE carries " type of attachment " parameter to initiating to adhere to request to MME by E-UTRAN in request message, and what type of attachment sign UE asked is the EPS/IMSI combined registering, and informing network UE can use the CS network.
Portable property parameters when UE initiates request is used to inform that this UE of EPS network is a voice center attribute;
Particularly, if UE can dispose support " voice centric " attribute, perhaps, and " voice centric " attribute and " data centric " attribute, " voice centric " attribute that UE will dispose in request message is informed MME.
UE also can only dispose a kind of attribute in subscription data, have only " data centric " attribute as card of surfing Internet.
Step 602, MME authenticates UE, downloads the subscription data of UE from HSS, and sets up EPS carrying (default bearing) to S-GW and P-GW application.
MME can be from request message the getattr parameter, know that UE is a voice center attribute; If do not carry in the request message, MME need be from the subscription data of UE the getattr parameter, judge that described UE is a voice center attribute;
Further optimize Internet resources, the process that the EPS carrying is set up in the application of this step can be placed on renewal response message back, step 606CS position.If failure is upgraded in the CS position, just the process of EPS carrying is set up in not application for execution.
Step 603, MME distributes the LAI of the acquiescence of a local configuration, and according to the number that the LAI that distributes finds VLR, initiates position updating request to MSC/VLR then;
Step 604, MME sends position updating request to VLR, comprises new LAI in the message, IMSI, the IP address of MME, information such as position updating type.
Step 605 is set up the Security Association on the carrying SGs mouth between VLR and the MME, VLR is in CS territory executing location renewal process.Because of upgrading failure in position, certain reason CS territory,, can cause the CS position to upgrade failure as limited, the signatory factor such as limited of no user data, zone.
Step 606, VLR upgrades failed message to the MME home position.
Step 607, MME judges whether the attribute of UE is voice center attribute after receiving that failed message is upgraded in position, CS territory, if UE is a voice center attribute, just refuses the request of adhering to of UE.
Step 608, MME sends and adheres to refuse information to UE, and the EPS of refusal UE adheres to request.
Adhere to the reason that further can carry refusal in the refuse information: existing EPS wireless network is the support voice business not.
Further, adhere to and to carry the upward address list of the wireless network of other support voice business of static configuration of MME in the refusal request message, and be handed down to UE.UE can initiate to adhere to request according to the wireless network address of support voice business.
Step 609, UE attempts initiating to adhere to request to the wireless network of other support voice business.
If do not carry the address list of wireless network in the refuse information, UE can directly adhere to 2G or 3G wireless network initiation CS.
Embodiment two
Referring to Fig. 7, the EPS network is not supported the IMS speech business, and UE need adopt CS network implementation realize voice business by CS falling technology.When the UE position change and after initiating the co-location update request, if the EPS network carries out failing when the position is upgraded at CS, the EPS network need judge whether UE is the UE of voice center attribute, if voice center attribute, just directly refuse the co-location update request of UE, and notify not support voice business of UE wireless network, UE to attempt position and upgrade to other support voice network.
The TA/LA (tracing area/band of position) that UE initiates in the present embodiment two more new technological process comprises following steps:
Step 701, UE finds to move to new TA, and new TA does not belong to the TA tabulation of former MME, and UE need carry out more new technological process of TA/LA, and rebulids the SGs Security Association.
Step 702, UE initiates the TAU request to target MME, carries the updating type parameter in the request message, and indicating this is the request of TA/LA associated update.
Portable property parameters when UE initiates request is used to inform that this UE of EPS network is a voice center attribute;
Particularly, if UE can dispose support " voice centric " attribute, perhaps, and " voice centric " attribute and " data centric " attribute, " voice centric " attribute that UE will dispose in request message is informed MME.
UE also can only dispose a kind of attribute in subscription data, have only " data centric " attribute as card of surfing Internet.
Step 703, EPS network are carried out the TAU process, and target MME downloads the subscription data of UE from HSS, and set up EPS carrying (default bearing) to S-GW and P-GW application, and UE switches to target MME from former MME.
Target MME can be from request message the getattr parameter, know that UE is a voice center attribute; If do not carry in the request message, target MME need be from the subscription data of UE the getattr parameter, judge that described UE is a voice center attribute
Further optimize Internet resources, the process that the application of this step is set up the EPS carrying and carry switching between former MME and target MME can be placed on renewal response message back, step 706CS position.If failure is upgraded in the CS position, just do not carry out the process of setting up EPS carrying and carrying handoff procedure.
Step 704, for the VLR alliance information is arranged in the MM context, the VLR alliance information need be according to new LA information updating.Target MME initiates position updating request to VLR, carries new LAI, IMSI, the IP address of MME, position updating type.It is a normal position updating process that the position updating type is indicated this.
Step 705, VLR carries out the position updating process in CS territory.Because of upgrading failure in position, certain reason CS territory,, can cause the CS position to upgrade failure as limited, the signatory factor such as limited of no user data, zone.
Step 706, VLR upgrades failed message to the MME home position.
Step 707, target MME judges whether the attribute of UE is voice center attribute after receiving that failed message is upgraded in position, CS territory, if UE is a voice center attribute, just refuses the TA/LA position updating request of UE.
Step 708, MME sends the position and upgrades refuse information to UE, the TA/LA position updating request of refusal UE.
The reason that further can carry refusal in the refusal request is upgraded in the position: the EPS wireless network of renewal is the support voice business not.
Further, the position is upgraded and can be carried the upward address list of the wireless network of other support voice business of static configuration of MME in the refusal request message, and is handed down to UE.UE can initiate position updating request according to the wireless network address of support voice business.
Step 709, UE attempts initiating position updating request to the wireless network of other support voice business.
Move because of the position and to cause UE after former MME nullifies, UE can directly initiate adhere to request to other wireless network.If do not carry the address list of wireless network in the refuse information, UE can directly initiate CS to the 2G/3G wireless network and adhere to.
The present invention is initiating the problem that combined registering/co-location renewal is failed for the UE that solves voice center attribute, optimize the Internet resources configuration, shorten the time that UE is attached to the wireless network with speech business ability, the EPS network can judge whether UE is voice center attribute among the present invention, when combined registering or co-location renewal failure, if UE is a voice center attribute, just directly refuse request of EPS/CS combined registering or the TA/LA co-location update request that UE initiates, inform not support voice business of UE prior wireless network, UE can directly initiate service request to the wireless network of other support voice business.
In sum, utilize the present invention, realized the purpose of user, strengthened user's voice experience, improved user's satisfaction in EPS network/CS network implementation realize voice business.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the method that falls after rise of a network management circuit switched voice comprises:
The subscriber equipment (UE) of voice center attribute is initiated request that the combined registering of EPS network and circuit switching (CS) network or co-location upgrade in grouping domain system (EPS) network of evolution after, if described EPS network upgrades failure to the position that the CS network is initiated, and described EPS network is not supported IP Multimedia System (IMS) speech business, described EPS network judges that described UE is a voice center attribute, refuses the request of described UE.
2. the method for claim 1 is characterized in that,
Described UE initiates request that the combined registering of EPS network and CS network or co-location upgrade in the EPS network after, described EPS network is attempted initiating the position to the CS network earlier and is upgraded, if the position is upgraded successfully, sets up EPS again and carries.
3. the method for claim 1 is characterized in that,
Described EPS network judges that described UE is the step of voice center attribute, specifically is meant:
The property parameters that the network based described UE of described EPS carries when initiating request that combined registering or co-location upgrade in the EPS network judges that described UE is a voice center attribute;
Perhaps, the property parameters in the subscription data of the network based described UE of described EPS judges that described UE is a voice center attribute.
4. the method for claim 1 is characterized in that,
Described EPS network is refused in the message of request of described UE, carries the wireless network address tabulation of support voice business;
Described UE attempts being attached to the wireless network of other support voice business according to the wireless network address tabulation of the described support voice business that receives.
5. the method for claim 1 is characterized in that,
If described EPS network is refused in the message of request of described UE, do not carry the wireless network address tabulation of support voice business, then described UE directly initiates CS to 2G or 3G wireless network and adheres to.
6. the method for claim 1 is characterized in that,
Described EPS network is refused the reason of carrying refusal in the message of request of described UE, informs not support voice business of described UE wireless network.
7. the system that the network management circuit switched voice falls after rise comprises UE and EPS network, it is characterized in that,
Described UE is a voice center attribute, is used for initiating the combined registering of EPS network and CS network or the request that co-location is upgraded at the EPS network;
Described EPS network is not supported the IMS speech business, after being used to receive the request of described UE initiation combined registering or co-location renewal, if fail to the position renewal that the CS network is initiated, and judges that described UE is a voice center attribute, then refuses the request of described UE.
8. system as claimed in claim 7 is characterized in that,
Described EPS network is attempted initiating the position to the CS network earlier and is upgraded after being further used for receiving the request of described combined registering or co-location renewal, upgrades successfully as if the position, sets up the EPS carrying again.
9. system as claimed in claim 7 is characterized in that,
The property parameters that described EPS network carries when being further used for initiating request that combined registering or co-location upgrade according to described UE in the EPS network or according to the property parameters in the subscription data of described UE judges that described UE is a voice center attribute.
10. system as claimed in claim 7 is characterized in that,
Described EPS network is further used in the message of the request of the described UE of refusal, carries the wireless network address tabulation of support voice business;
Described UE is further used for the wireless network address tabulation according to the described support voice business that receives, and selects to insert the wireless network of other support voice business.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101681023A CN101998357A (en) | 2009-08-28 | 2009-08-28 | Network management circuit switched voice falling method and system |
| PCT/CN2010/076259 WO2011023091A1 (en) | 2009-08-28 | 2010-08-23 | Method and system for managing circuit switched voice fallback in network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009101681023A CN101998357A (en) | 2009-08-28 | 2009-08-28 | Network management circuit switched voice falling method and system |
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| CN101998357A true CN101998357A (en) | 2011-03-30 |
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| CN2009101681023A Pending CN101998357A (en) | 2009-08-28 | 2009-08-28 | Network management circuit switched voice falling method and system |
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| CN (1) | CN101998357A (en) |
| WO (1) | WO2011023091A1 (en) |
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