CN101867986B - CSFB function activating method and system thereof - Google Patents
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Abstract
The invention discloses a CSFB function activating method and a system thereof, which can used for realizing the CSFB function using Femtocell to activate UE. The invention provides the CSFB function activating method which comprises the steps that a mobility management entity (MME) acquires an attach request message sent by the UE through the Femtocell; and the MME can confirm the CSFB function supported by the UE according to the attach request message sent by the UE, and activates the CSFB function of the UE by the attaching process of the UE.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of return circuit and exchange (CSFB, CSFallback) Activiation method of function and system.
Background technology
Because evolved packet system (EPS; Evolved Packet System) support circuit-switched (CS no longer; Circuit Switched) territory; Therefore traditional voice class business based on the CS territory can not be directly supported in the EPS system, can only pass through the voice class business that IP Multimedia System (IMS, IP Multimedia Subsystem) is simulated traditional CS territory.
Return circuit exchange (CSFB, CS Fallback) technology is that the CS territory of the utilization tradition 2G/3G system that proposes of third generation collaborative project (3GPP) technology provides the CS territory professional a kind of method for the UE of EPS system, particularly; As shown in Figure 1; When UE resided in the EPS system, if UE need use the business in CS territory, then UE used the CS territory of 2G/3G to initiate or receive CS territory business; Simultaneously the carrying of EPS system is switched on packet switching (PS, the Packed Switched) territory of 2G/3G.When UE after CS territory business is accomplished in the CS territory of 2G/3G system, can return in the EPS system.
UE uses the CSFB function if desired, then must activate the CSFB function in advance, in the TS23.272 standard, has at length defined the flow process that activates the CSFB function of UE.Behind the CSFB function activation; (the MSC of mobile switching centre; Mobile Switching Center)/and set up the related of SGs interface between VLR Visitor Location Register (VLR, VisitorLocation Register) and the MME, promptly MSC/VLR and MME write down the other side's information such as IP address.
Be the activation that realizes the CSFB function through macro base station in the prior art, can't activate the CSFB function of UE through Home eNodeB.
Summary of the invention
The embodiment of the invention provides a kind of Activiation method and system of CSFB function, in order to realize activating through Home eNodeB the CSFB function of UE.
The Activiation method of a kind of CSFB function that the embodiment of the invention provides comprises:
Mobility Management Entity MME obtains the attach request Attach Request message that user equipment (UE) sends through Home eNodeB;
The Attach Request message that said MME sends through UE confirms that this UE supports the CSFB function, and activates the CSFB function of said UE through the attaching process of UE.
A kind of communication system that the embodiment of the invention provides comprises:
Home eNodeB is used to receive the attach request Attach Request message that user equipment (UE) sends, and gives Mobility Management Entity MME with this Attach Request forwards;
Mobility Management Entity MME is used for obtaining the Attach Request message that UE sends through Home eNodeB, confirms that through Attach Request message UE supports the CSFB function, and activates the CSFB function of this UE through the attaching process of UE.
A kind of subscriber equipment that the embodiment of the invention provides comprises:
CSFB function notification unit is used for through send attach request Attach Request message to Home eNodeB, and the said subscriber equipment of informing network side is supported return circuit exchange CSFB function.
The embodiment of the invention, Mobility Management Entity MME obtains the attach request Attach Request message that user equipment (UE) sends through Home eNodeB; The Attach Request message that said MME sends through UE confirms that this UE supports the CSFB function, and activates the CSFB function of said UE through the attaching process of UE, thereby has realized activating through Home eNodeB the CSFB function of UE.
Description of drawings
Fig. 1 is the schematic network structure of carrying out in the prior art under the CSFB process;
The UE that Fig. 2 provides for the embodiment of the invention inserts the sketch map of mobile operator network and local network through Home eNodeB;
The control UE that Fig. 3 provides for the embodiment of the invention inserts the overall procedure sketch map of local network;
The sketch map of the attaching process of the CSFB that Fig. 4 provides for the embodiment of the invention;
The sketch map of the Attach process that Fig. 5 provides for the embodiment of the invention;
The structural representation of a kind of communication system that Fig. 6 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of Activiation method and system of CSFB function, in order to realize activating through Home eNodeB the CSFB function of UE.
In the embodiment of the invention, possess the UE of CSFB function, be attached to through Home eNodeB in the process of EPS system, realize the activation of CSFB function, and this attaching process can also make that further UE is connected to local network.
The described local network of the embodiment of the invention is meant the home network or local internet (Internet) that link to each other with Home eNodeB (HeNB).
So-called home network; Be meant the home network device that is connected with HeNB; For example: one or more home computer, the network printer, network video device, network cameras or the like, the local area network of forming through these home network devices is home network.
So-called local Internet network is meant the network that can be linked into Internet that is connected with HeNB.
As shown in Figure 2, through the technical scheme that the embodiment of the invention provides, not only can activate the CSFB function of UE and be connected to the mobile operator network through HeNB, can also be connected to home network or local Internet network through HeNB.
Referring to Fig. 3, the method for the activation of a kind of CSFB function that the embodiment of the invention provides totally comprises step:
S101, Mobility Management Entity MME obtain attach request (Attach Request) message that user equipment (UE) sends through Home eNodeB.
The Attach Request message that S102, MME send through UE confirms that this UE supports the CSFB function, and activates the CSFB function of this UE through the attaching process of UE.
Preferably, MME confirms that UE supports that this method also comprises after the CSFB function:
MME obtains the information that the UE request inserts local network, and the information of the local network that request inserts according to UE, the indication Home eNodeB is set up local network for this UE carrying; Home eNodeB is according to the indication of MME, and through set up the radio bearer of local network for this UE, realization inserts local network with this UE.
Preferably, the MME step of obtaining the information of the local network that UE request inserts comprises:
MME obtains the information that the UE request inserts local network through the type of attachment Attach Type that carries in the said Attach Request message; Perhaps,
MME receives the connection request PDN Connectivity Request of the Packet Data Network message that Home eNodeB is transmitted; And the request type Request Type through carrying in this PDN Connectivity Request message, obtain the information that the UE request inserts local network; Perhaps,
MME is after having sent the session management information request ESM Information Request message of evolution to UE; The session management information response ESM Information Response message of the evolution of returning from UE, obtain the information of the local network that the UE request inserts.
Wherein, the UE that MME obtains through ESM Information Response message asks the information of the local network of access, asks the APN APN information of the local network of access for UE.
Preferably, the APN information of the MME local network that request inserts according to UE, the indication Home eNodeB comprises for the step that this UE is established to the carrying of local network:
The APN information of the said MME local network that request inserts according to UE; Confirm the type of the local network that the UE request inserts; And from the corresponding a plurality of local networks of the type, being local network of this UE selection, the indication Home eNodeB is established to the carrying of this local network for this UE.
Provide concrete explaining below.
The embodiment of the invention will be used to activate the CSFB function of this UE and realize that the attaching process that UE is inserted local network is called CSFB Attach process.Referring to Fig. 4, the CSFBAttach process that the embodiment of the invention provides comprises step:
1, UE initiates attaching process, and UE passes through Home eNodeB and sends attach request (Attach Request) message to MME, comprises the information that UE supports the CSFB function in this message, and the information of the local network of UE request access, for example:
When the type of attachment in the Attach Request message (Attach Type) is that joint family/IMSI International Mobile Subscriber Identity (IMSI) is when adhering to (Combined Home/IMSI attach); " IMSI attach " expression UE informing network UE wherein supports the function in CS territory, and " Home " expression UE request wherein inserts home network." Combined Home/IMSI Attach " is meant that then UE supports the function in CS territory, and request access home network, that is to say that UE has the function of CSFB.
When Attach Type is that associating internet/IMSI is when adhering to (Combined Internet/IMSI Attach); " IMSI attach " expression UE informing network UE wherein supports the CSFB function, and " Internet " expression UE request wherein inserts local Internet network." Combined Internet/IMSI Attach " is meant that then UE supports the function in CS territory, and the local Internet network of request access, that is to say that UE has the function of CSFB.
This step 1 is made up of step 1 shown in Figure 5 and 2, and promptly UE sends Attach Request message and gives Home eNodeB, and Home eNodeB is transmitted this Attach Request message and given MME.
2, carry out EPS and adhere to (EPS Attach) process, this process comprises that step 3 shown in Figure 5 is to 11.
3, MME obtains VLR Visitor Location Register (VLR, Visitor Location Register) address (VLRNumber), and distributes a default location district sign (Default LAI).
4, MME sends position updating request (Location Update Request) message to VLR.
Comprise in this Location Update Request message: new Location Area Identification (new LAI), IMSI, MME address (MME address), position updating type (Location Update Type).MME address wherein is the IP address of MME.
5, the address of VLR store M ME, and create the SGs interface conjunctionn.
Wherein, SGs is the interface name between MME and the MSC/VLR.Said establishment SGs interface conjunctionn is meant between MME and MSC/VLR that for this reason UE sets up that signaling is connected and corresponding user's context.
6, VLR carries out the position updating process (Location Updating procedure) in CS territory.
7, VLR responds the position renewal to MME and accepts (Location Update Accept) message, wherein comprises the Temporary Mobile Subscriber Identity (TMSI) of VLR.
8, MME sends to UE and adheres to acceptance (Attach Accept) message.This step is made up of to 17 step 12 shown in Figure 5.
Comprise in the Attach Accept message: the parameter that defines in TS 23.401 standards, LAI, VLR TMSI.
Wherein, LAI obtains in step 3, and parameter L AI and VLR TMSI indication UE successfully are attached to the CS territory, have promptly realized the CSFB function of UE, have the function that returns to the CS territory.
Introduce the embodiment of the invention below in detail and how to realize that UE passes through Home eNodeB and inserts local network.
When UE is attached to the EPS system through the HeNB that adopts the E-UTRAN access technology; Requirement according to standard; UE need set up a Packet Data Network (PDN) and connect; If UE need be connected to local network at this moment, then to connect be to be connected to local network rather than traditional pairing PDN of SGi interface connects to the UE PDN that needs informing network self to set up.Because the pairing PDN connection of traditional SGi interface needs to use gateway (Serving GW) and the packet data network gateway (PDNGW) in the core net, and local network is to use Serving GW and PDN GW in the core net.After UE was connected to local network, as shown in Figure 2, upstream data only was from UE to HeNB, arrives local network then; Downlink data from the local network to HeNB then to UE.
In the embodiment of the invention, the Attach process of initiating through UE realizes that UE inserts local network through Home eNodeB, and referring to Fig. 5, this Attach process specifically comprises step:
1, UE initiates attaching process, sends Attach Request message and gives HeNB.
Comprise in the Attach Request message: IMSI International Mobile Subscriber Identity (IMSI) or old global unique (user) temporary mark (GUTI, Globally Unique Temporary Identity), the tracking area identification (last visited TAI) (if available) of visit recently; The core net ability of UE (UE Core NetworkCapability), the special discontinuous reception of UE (DRX, Discontinuous Reception) parameter; PDN type (PDN Type); Protocol configuration option (Protocol Configuration Options), encrypted transmission selected marker (Ciphered Options Transfer Flag), type of attachment (Attach Type); Key identification (KSIASME); Non-Access Stratum (NAS, Non-Access Stratum) sequence number (NAS sequencenumber), non-access layer information authentication code (NAS-MAC; Message Authentication Code), the GUTI (additional GUTI) that adds.
Because the Attach process of TS24.301 standard and TS23.401 standard definition is different; Definition according to the TS24.301 standard; The Attach process comprises two processes: only have the Attach process of mobile management sexual function, and UE request Packet Data Network connects (UE Request PDN Connectivity) process.
According to the definition of TS23.401 standard, if UE unites and adheres to, then the Attach Type in the Attach process adheres to (Combined EPS/IMSI Attach) for associating EPS/IMSI; If UE carries out adhering to of other type, then Attach Type adheres to (Handover Attach) for initially adhering to (Initial Attach) or switching.If UE initially is linked into the EPS system, and the information of the UE local network that need the UE request be inserted, and UE supports the information of CSFB function to notify to network, and then the set-up mode of AttachType is following:
If the type of the local network that UE request inserts is a home network, then Attach Type is set is that joint family/IMSI adheres to (Combined Home/IMSI attach) to UE.Wherein, " Home " indicated the information of the local network of UE request access; " IMSI " indicated UE to support the CSFB function.
If the type of the local network that UE request inserts is local Internet network, then UE is provided with AttachType and adheres to (Combined Internet/IMSI Attach) for associating internet/IMSI.Wherein, " Internet " indicated the information of the local network of UE request access; " IMSI " indicated UE to support the CSFB function.
According to the definition of TS24.301 standard, in only having the Attach process of mobile management sexual function, if UE unites and adheres to, then Attach Type is Combined EPS/IMSI Attach; If UE carries out adhering to of other type, then Attach Type is for only being attached to EPS system (EPS AttachOnly).In only having the UE Requested PDN Connectivity process of session management procedure, UE is in sending to Packet Data Network's connection request of MME (PDN Connectivity Request) message, and Request Type set-up mode is following:
When UE initially adhered to, Request Type was initial request (Initial Request).
When UE when non-3GPP access technology switches to the E-UTRAN access technology, Request Type is handoff request (Handover Request).
When the UE request inserted local network, Request Type was set to family request (Home Request) or internet request (Internet Request), in order to ask the information of the local network of access to be notified UE to network side.Promptly when Request Type was Home Request, the information of the local network that the UE request inserts was that the UE request inserts home network; When Request Type was Internet Request, the information of the local network that the UE request inserts was that the UE request inserts local internet.
That is to say; Respectively according to the definition of TS23.401 standard and TS24.301 standard; The embodiment of the invention has provided the Attach Type in the Attach process; And have the Attach Type in the Attach process of mobile management sexual function and only have the new corresponding relation between the Request Type in the UE Request PDN Connectivity process of conversation management functional; Shown in following table 1,, make substandard Attach Type of TS23.401 and the substandard Attach Type of TS24.301 and Request Type have following corresponding relation through the technical scheme that the embodiment of the invention provides:
Table 1
Need to prove; " the Combined Home/IMSI Attach " that the embodiment of the invention provides, " Combined Internet/IMSI Attach ", " Home Request " and " Internet Request " are a kind of UE support CSFB function that is used for representing; And the specific names of the information of the local network of UE request access, can certainly adopt other specific names to represent that UE asks the information of the local network of access.
2, HeNB sends S1-MME interface control messages (S1-MME control message); Wherein S1-MME interface is meant the control plane interface between HeNB and the MME; Be that HeNB sends to new MME (new MME) with initial UE message (Initial UE message), include Attach Request message in this message.
The TS24.301 standard points out to include in the Attach Request message PDN Connectivity Request message, and MME can know that according to Attach Type in the Attach Request message and/or the Request Type among the PDN ConnectivityRequest UE will be linked in the local network of which type.Therefore; When the local network of the same type that HeNB connected only allows a network and lets the user insert; Attach request (Attach Request) message and/or Packet Data Network's connection request (PDNConnectivity Request) message are only indicated the type of local network, and which local network what network side just can be known UE request access is.
3, new MME is to old MME or service universal packet wireless business affair (GPRS; GeneralPacket Radio Service) service node (SGSN; Serving GPRS Support Node) (oldMME/SGSN) sends identification request (Identification Request) message; After old MME or SGSN receive Identification Request message, reply identification response (IdentificationResponse) message, wherein contain the IMSI of UE to new MME.
4, if new MME and old MME or SGSN all do not know this UE; Then new MME sends identity request (Identity Request) message and gives UE; Request UE provide its IMSI; After UE receives IdentityRequest message, reply identity response (Identity Response) message and give new MME, wherein contain the IMSI of UE.
5a, according to condition, new MME carries out authentication and security process (Authentication/Security).
5b, new MME obtain the mobile terminal identification of UE (ME Identity); And to equipment identity register (EIR; Equipment Identity Register) sends mobile terminal identification and examine request (ME IdentityCheck Request) message; The ME Identity and the IMSI that wherein comprise UE; After EIR receives this MEIdentity Check Request message, reply mobile terminal identification to new MME and verify and confirm (MEIdentity Check Ack) message, wherein contain verification result (Result).
If having carried to encrypt, 6 UE select metastatic marker (CipheredOptions Transfer Flag) in Attach request message; Then after network activation is encrypted; New MME selects request (Ciphered Options Request) message (defining in the TS23.401 standard) through sending to encrypt; Be that (this message defines in the TS24.301 standard message ESM InformationRequest (the session management information request of evolution); Be equivalent to the Ciphered Options Request message that defines in the TS23.401 standard); To UE acquisition request protocol configuration option (PCO, protocol Configuration Options) information and/or APN (APN) information.After UE receives Ciphered Options Request message; Reply to encrypt and select response (Ciphered Options Response) message (defining among the TS23.401); Be that (this message defines in the TS24.301 standard message ESM InformationResponse (the session management information response of evolution); Be equivalent to Ciphered Options Response message) give new MME, so that PCO and/or APN to be provided.
7, if new MME finds this UE the bearer context (active bearer contexts) of activation is arranged; Then new MME sends deleting bearing request (Delete Bearer Request) message and gives relevant gateway (GW); The reason (Cause) and the Tunnel End Point Identifier (TEID that wherein contain deleting bearing; Tunnel EndPoint Identifier); In order to delete these bearer contexts, relevant gateway (GWs) is replied deleting bearing response (Delete Bearer Response) message and is given new MME, wherein contains Tunnel End Point Identifier (TEIDs).If strategy has been disposed with charging rule functions (PCRF, Policy and Charging Rules Function), then packet data network gateway (PDN GW) execution IP connects net conversation end (IP-CANSession Termination) process.
It is thus clear that the effect of step 7 is when new MME and old MME are same MME, new MME removes also not deleted EPS carrying in the network before UE adheres to.
8, new MME sends renewal position requests (Update Location Request) message to home signature user server (HSS, Home Subscriber Server).
Contain in the Update Location Request message: MME identifies (MME Identity), IMSI, ME Identity, MME ability (MME Capabilities), updating type (Update Type).
9, HSS sends canceling position (Cancel Location) message to old MME and old SGSN, comprising: IMSI and cancellation type (Cancellation Type).After old MME and old SGSN receive Cancel Location message, reply canceling position to HSS and confirm (Cancel Location Ack) message.
10, if old MME/SGSN finds this UE the bearer context (active bearercontexts) of activation is arranged; Then old MME/SGSN sends deleting bearing request (Delete Bearer Request) message and gives relevant GW; In order to these bearer contexts of request deletion, comprising deletion reason (Cause) and TEID.Relevant GW receives after this Delete Bearer Request message, replys deleting bearing response (Delete Bearer Response) message and gives old MME/SGSN, wherein comprises TEID.If PCRF has been disposed, then PDN GW carries out IP-CAN Session Termination process.
11, HSS sends to new MME and upgrades location confirmation (Update Location Ack) message; Wherein comprise IMSI and subscription data (Subscription data); Include one or more (PDN of Packet Data Network among the described Subscription Data; Packet Data Network) signatory context (PDNsubscription context); Each PDN subscription context comprises an EPS subscribedQoS profile (EPS contract QoS archives) and the subscribed APN-AMBR (signatory APN (Access Point Name; Access Point Name) Aggregate Maximum Bit Rate (AMBR, AggregatedMaximum Bit Rate)).
To sum up, step 8-11 is the updating location information process, i.e. the old MME identification information that HSS deletion is stored, and add new MME identification information, promptly new MME is registered among the HSS as current mobile control and management entity node for the UE service.
12, new MME transmission is adhered to acceptance (Attach Accept) message to HeNB.
Comprise in the Attach Accept message: APN, GUTI, PDN Type; PDN address (PDNAddress), tracking area identification (TAI, Tracking Area Identity) tabulation (TAI List); EPS bearing identification (EPS Bearer Identity), session management request (Session Management Request), protocol configuration option (Protocol Configuration Options); Key identification (KSIASME), NASsequence number, NAS-MAC.
Attach Accept message is included in the S1_MME control message (S1-MME interface control messages), promptly is included in initial context and sets up in request (Initial Context Setup Request) message.This S1 control messages includes up IP address and the TEID that EPS that EPS Bearer Identity and gateway (Serving GW) identified for this EPS Bearer Identity carries the S1-U interface that is distributed.
It is that the carrying that UE sets up is used for local network that MME need notify HeNB; Because when HeNB receives that UE sends to the data of local network; HeNB can not be given to the gateway (Serving GW) in the core net forward with these data, and is given to local network before wanting.If need not be given to local network, then HeNB receives when UE sends to the data of mobile operator network, is to be given to the Serving GW in the core net before wanting.
Therefore, new MME can set up request (Initial Context SetupRequest) message through initial context the information of the local network of UE request access is notified to HeNB, is established to the radio bearer of local network for this UE with indication HeNB.
Because local network might be a home network, also possibly be local Internet network.In addition, also might be one or more home networks for home network, so network side also need be notified the information which concrete local network UE is linked into to HeNB.
A network (comprising local network) can be identified by an APN, and therefore, the MME notice radio bearer that HeNB set up is to be that the mode that a specific local network uses can comprise:
Mode 1:MME is provided with an APN and indicates concrete local network information in initial context foundation request (Initial Context Setup Request) message.
Mode 2: if HeNB can only be connected to one family network or a local Internet network at most; Then MME can be provided with the indication information of a local network type in Initial Context Setup Request message; In order to the indication connection is home network or local Internet network; For example, represent home network with 0, with the local Internet network of 1 sign.
13, HeNB sends wireless resource control connection reconfiguration (RRC Connection Reconfiguration) message and gives UE; Wherein comprise EPS radio bearer sign (EPS Radio Bearer Identity), and Attach Accept message is comprised in also in this RRC message and sends UE to.
14, UE sends wireless resource control connection reconfiguration and accomplishes (RRC ConnectionReconfiguration Complete) message to HeNB.
So far, through step 13 and step 14, accomplished the foundation of the access local network radio bearer between HeNB and the UE.
15, HeNB sends initial context and response (Initial Context Response) message is set to new MME, wherein comprises the downstream IP address and the TEID of the S1-U interface (being the user plane interface between HeNB and the gateway Serving GW) of HeNB distribution.
To step 15, the radio bearer between UE and the local network has been accomplished foundation through step 12.Because the carrying between UE and the local network does not comprise the carrying of core net part, so in fact the carrying between UE and the local network is exactly the radio bearer between UE and the HeNB.
16, UE sends and directly transmits (Direct Transfer) message to HeNB, and this message comprises adheres to completion (Attach Complete) message.
Comprise in this Attach Complete message: EPS Bearer Identity, NAS sequence number, NAS-MAC.
17, HeNB preceding this Attach Complete message of changeing in up link NAS transmission (Uplink NAS Transport) message is given new MME.
After above-mentioned Attach process was accomplished, UE just can be connected to local network through HeNB, and communicates through the equipment in HeNB and the local network.
Introduce the APN that carries in the ESM Information Response message (or Ciphered Options Response message) in the above-mentioned step 6 shown in Figure 5 below in detail.
APN described in the embodiment of the invention; Comprise four kinds of APN; Be home network APN (H-APN) and the local point of presence title (I-APN) that defines in the APN that defines in the prior art, the embodiment of the invention; And the special-purpose APN of local network, comprise two kinds of special-purpose APN of home network and local internet-specific APN.
Wherein, Can indicate the information (type information that comprises home network of the home network of UE request access with H-APN; And the information that is used to indicate concrete which home network); Can indicate the information (comprise the type information of local internet, and be used to indicate the specifically information of which local internet) of the local internet of UE request access with I-APN.
Need to prove that " H-APN " and " I-APN " is a kind of specific sign, can certainly adopt other specific identifier, like " Home-APN " or " Internet-APN " etc.
The special-purpose APN of so-called local network is the fixing multicharacter APN of having of a kind of special definition, is used to indicate the type information of local network, comprises two types of special-purpose APN of home network and local internet-specific APN.
For example, when the special-purpose APN of local network was " Home Network.3gppnetwork.org ", the type of expression local network was a home network; When the special-purpose APN of local network was " Local InternetNetwork.3gppnetwork.org ", the type of expression local network was local internet.
Wherein, " Home Network.3gppnetwork.org " and " Local InternetNetwork.3gppnetwork.org " sign only is a kind of illustrating, and can also adopt other signs.
When the local network of the same type that HeNB connected only allows a network; Attach Type in attach request (Attach Request) message is Combined Home/IMSI attach or Combined Internet/IMSI Attach; The Request Type that also can be provided with in Packet Data Network's connection request (PDNConnectivity Request) message is Home Request or InternetRequest; Thereby type through the indication local network; The local network that indication UE request inserts; At this moment, the information of the APN that carries in the session management information of evolution response (ESM Information Response) message can be ignored, and disregards.
But; When the local network of the same type that HeNB connected allows a plurality of networks; When allowing same subscriber equipment to insert the one or more local network of same type, the APN indication of then carrying in the session management information of evolution response (ESM Information Response) message be which local network under this type.And this APN can be the APN that has defined in the prior art, or the special-purpose APN of the H-APN that defines in the embodiment of the invention, I-APN or local network, identifies the specifying information of the local network of UE request access.
Need to prove, if UE do not provide APN, or the APN that provides be wildcard APN (be wildcard, "
*"), explain that then UE only provides the type information of the local network of request access, so MME can select the local network an of the type for UE.For example: the H-APN that UE provides is wildcard, promptly "
*", then MME can select the one family network for UE, and perhaps, the I-APN that UE provides is wildcard, promptly "
*", then MME can select a local internet for UE.
Provide in the embodiment of the invention explanation below about four kinds of applicable cases of APN.
Situation one: when the local network of the same type that HeNB connected only allows a network; And (UE can insert two types network simultaneously when allowing same subscriber equipment can only insert a local network for a type; But every type can only be inserted a network); If the Attach Type in attach request (Attach Request) message is Combined EPS/IMSI Attach; Or the Request Type in Packet Data Network's connection request (PDN Connectivity Request) message is Initial Request; Be that UE does not indicate the information that is linked into local network in these two message, then the APN in the session management information of evolution response (ESM Information Response) message is H-APN or I-APN, perhaps can also be the special-purpose APN of local network.
In this case, the special-purpose APN of H-APN or I-APN or local network is directly corresponding to the local network of respective type.
Situation two: when the local network of the same type that HeNB connected allows a plurality of networks; But when allowing same subscriber equipment can only insert a local network for same type; If the Attach Type in attach request (AttachRequest) message is Combined EPS/IMSI Attach; Or the Request Type in Packet Data Network's connection request (PDN Connectivity Request) message is Initial Request, the concrete local network under the APN indication this type of carrying in then need session management information response (the ESM Information Response) message through evolution.The APN of this moment can be the special-purpose APN of H-APN, I-APN or local network.Wherein, if in the ESM Information Response message APN that carries only provide the type information of local network, H-APN that promptly provides or I-APN be wildcard (promptly "
*"), perhaps provide the special-purpose APN of local network, then MME can select a local network for UE in respective type.
Situation three: when the local network of the same type that HeNB connected allows a plurality of networks; And (UE can insert the local network of a plurality of types simultaneously when allowing subscriber equipment to insert a plurality of local network of same type; And the local network for each type can insert a plurality of); If the Attach Type in attach request (AttachRequest) message is Combined Home/IMSI Attach or CombinedInternet/IMSI Attach; Perhaps the Request Type in Packet Data Network's connection request (PDN Connectivity Request) message is Home Request or Internet Request; Promptly indicated the type of local network, what then APN indicated in the session management information of evolution response (ESM Information Response) message is the concrete local network under this type.The APN that carry in the ESM Information Response message this moment can be the APN that defines in the prior art, or H-APN that defines in the embodiment of the invention or I-APN.Wherein, if H-APN or I-APN that UE provides are wildcard, promptly "
*", then MME can select the local network of a respective type for UE.
Situation four: when the local network of the same type that HeNB connected allows a plurality of networks; And when allowing subscriber equipment to insert a plurality of local network of same type; If the Attach Type in attach request (Attach Request) message is Combined EPS/IMSI Attach; Or the Request Type in Packet Data Network's connection request (PDN Connectivity Request) message is Initial Request; Be that UE does not indicate the information that is linked into local network in these two message; Then carry the type information that APN should indicate the local network of UE request access in the session management information of evolution response (ESM Information Response) message, also will indicate is which local network under this type.Therefore, in this case, the APN that carries in the ESM Information Response message is the special-purpose APN of H-APN, I-APN or local network.Wherein, if in the ESM Information Response message APN that carries only provide the type information of local network, H-APN that promptly provides or I-APN be wildcard (promptly "
*"), perhaps provide the special-purpose APN of local network, then MME can select a local network for UE in respective type.
To sum up; The APN that carries in the ESM Information Response message; With the Attach Type that carries in the Attach Request message, and the Request Type that carries in the PDN Connectivity Request message possibly make up shown in following table 2 under the situation that activates CSFB:
Table 2
Wherein, the nothing described in the table 2 (APN) is not promptly carried APN in the ESM Information Response message.
In order to express local access point title H-APN and I-APN,, need the form of definition H-APN and I-APN with the difference of existing radio area network APN (W-APN) and APN.
The formation rule of H-APN and I-APN is following:
H-APN can be made up of two parts content:
First, the network identity (The H-APN NetworkIdentifier) of the home network that the UE request inserts, this part is essential.
Second portion, the sign (The H-APN Operator Identifier) of the pairing public land mobile net of home network (PLMN, public land mobile network) that the UE request inserts, the i.e. sign of operator.This part is optional.
HeNB can link to each other with a plurality of PLMN simultaneously.
The form of The H-APN Operator Identifier is: " h-apn.epc.mnc < MNC>.mcc < MCC>.3gppnetwork.org ".
Wherein, character mark " mnc " is to represent that the numeral of thereafter < MNC>and < MCC>is respectively mobile network code (MNC, Mobile Network Code) and Mobile Country Code MCC (MobileCountry Code) with " mcc ".MCC is made up of three numerals (three digits), as 345.And the length of MNC is three numerals or two-digit (two or three digits), and they have all done detailed explanation in the TS23.003 standard.
For example, when MCC is 345, MNC is 12 o'clock, and then The H-APN Operator Identifier is " h-apn.epc.mnc012.mcc345.3gppnetwork.org ".
In like manner, I-APN also can be made up of two parts content:
First, the network identity (The I-APN NetworkIdentifier) of the local internet that the UE request inserts, this part is essential.
Second portion, the sign (The I-APN Operator Identifier) of the pairing public land mobile net in local internet (PLMN, public land mobile network) that the UE request inserts, the i.e. sign of operator.This part is optional.
If do not comprise the sign of the pairing public land mobile net of local network in the local access point title (H-APN or I-APN); Then network side can't be distinguished local access point title and existing APN; Because not comprising the local access point title of the sign of public land mobile net is the same with the form of APN, the difference of having no idea.
APN in the coded format in the message shown in following table 3:
Table 3
For traditional APN, corresponding to the value of Access point name IEI, and the embodiment of the invention has proposed H-APN and I-APN, therefore will increase the value number of Access point name IEI, to represent H-APN and I-APN respectively.
For example, when Access point name IEI=51, the APN that defines in the expression prior art (also representing the special-purpose APN of the local network that defines in the embodiment of the invention); When Access point name IEI=52, expression H-APN; When Access point name IEI=53, expression I-APN.
This shows that different with H-APN and I-APN is that the special-purpose APN of local network need not to revise parameter A ccess point name IEI, promptly need not to revise agreement, and only need revise the parameter preparation of terminal and network, and is therefore more easy.The special-purpose APN of local network is applicable to whole 3GPP standard, is used to identify the type of local network.
Therefore, what network side just can be known access that UE asked this moment through the value of Access point name IEI is home network or local internet, or the mobile operator network.
Obviously, H-APN and the I-APN of signatory home network can be asterisk wildcard (Wild card) among the HSS, H-APN that promptly stores among the HSS and I-APN be "
*".
To sum up; In the embodiment of the invention in the process of the CSFB function that activates UE through CSFB Attach process; UE can carry H-APN or I-APN or the special-purpose APN of local network that defines in the APN that defines in the prior art or the embodiment of the invention through ESM Information Response message; Insert the information of local network with indication UE request, thereby can UE be linked into local network.
The system that the embodiment of the invention once provides is described below.
Referring to Fig. 6, a kind of communication system that the embodiment of the invention provides comprises:
Mobility Management Entity MME 30; Be used for obtaining the AttachRequest message that UE 20 sends through Home eNodeB 10; Confirm that through Attach Request message UE 20 supports the CSFB function, and activate the CSFB function of this UE 20 through the attaching process of UE 20.
Preferably, said MME 30 comprises:
Activate unit 32, be used for activating the CSFB function of the UE 20 that supports the CSFB function through the attaching process of UE 20.
Preferably, said information acquisition unit 31 also is used to obtain the information that UE 20 requests insert local network.Said MME 30 also comprises:
Indicating member 33 is used for the information according to the local network of UE 20 request accesses, the carrying that indication Home eNodeB 10 is set up local network for this UE 20.
Preferably; Said information acquisition unit 31; Through the type of attachment Attach Type that carries in the Attach Request message; The request type Request Type that perhaps carries in the connection request PDNConnectivity Request of the Packet Data Network message through Home eNodeB 10 forwardings, the session management information that perhaps passes through the evolution of UE 20 transmissions responds ESM Information Response message, obtains the information of the local network of UE 20 request accesses.
Preferably, said information acquisition unit 31, the information of the local network that UE 20 requests of obtaining through ESM Information Response message insert, the APN APN information of the local network that inserts for UE 20 requests.
Data Transmission Controlling unit 13, being used for setting up unit 12 through carrying is the radio bearer that this UE 20 is established to local network, control data transmits between the local network of UE 20 and this UE 20 request accesses.
Preferably, said UE 20 comprises:
CSFB function notification unit 21 is used for through sending attach request AttachRequest message to Home eNodeB 10, and the said subscriber equipment 20 of informing network side is supported return circuit exchange CSFB function.
Request inserts local network element 22; Be used for through Attach Request message or the connection request PDN Connectivity Request of Packet Data Network message; Or the session management information of evolution response ESMInformation Response message, the information that said subscriber equipment 20 requests are inserted local network sends to Home eNodeB 10.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. the Activiation method of return circuit exchange CSFB function is characterized in that this method comprises:
Mobility Management Entity MME obtains the attach request Attach Request message that user equipment (UE) sends through Home eNodeB;
Said MME is through obtaining type of attachment Attach Type from the Attach Request message that UE sends, and according to the indication of said Attach Type, confirms that this UE supports the CSFB function, and activate the CSFB function of said UE through the attaching process of UE;
MME obtains the information that the UE request inserts local network, and the information of the local network that request inserts according to UE, the indication Home eNodeB is set up local network for this UE carrying; Said Home eNodeB is according to the indication of said MME, and through set up the radio bearer of local network for this UE, realization inserts local network with this UE.
2. method according to claim 1 is characterized in that, the step that said MME obtains the information of the local network that UE request inserts comprises:
MME obtains the information that the UE request inserts local network through the type of attachment Attach Type that carries in the said Attach Request message; Perhaps,
MME receives the connection request PDN Connectivity Request of the Packet Data Network message that Home eNodeB is transmitted; And the request type Request Type through carrying in this PDN Connectivity Request message, obtain the information that the UE request inserts local network.
3. method according to claim 2 is characterized in that, said UE asks the information of the local network of access, asks the APN APN information of the local network of access for UE;
The step that said MME obtains the information of the local network that UE request inserts comprises:
MME is after having sent the session management information request ESM Information Request message of evolution to UE; The session management information response ESM Information Response message of the evolution of returning from UE, obtain the APN information of the local network that the UE request inserts.
4. method according to claim 3 is characterized in that, the information of the said MME local network that request inserts according to UE, and the indication Home eNodeB comprises for the step that this UE is established to the carrying of local network:
The APN information of the said MME local network that request inserts according to UE; Confirm the type of the local network that the UE request inserts; And from the corresponding a plurality of local networks of the type, being local network of this UE selection, the indication Home eNodeB is established to the carrying of this local network for this UE.
5. according to claim 3 or 4 described methods, it is characterized in that said APN is home network APN, local internet APN, the special-purpose APN of home network or local internet-specific APN.
6. method according to claim 5 is characterized in that, when said APN was home network APN or local internet APN, the APN information of said local network comprised:
The network identity of the local network that the UE request inserts; Perhaps,
The PLMN sign of the network identity of the local network that the UE request inserts and the public land mobile net of this local network correspondence.
7. method according to claim 5; It is characterized in that; When said APN is home network APN or local internet APN; If be used to identify the value of the source identity IEI of APN type in the APN information of said local network, when being used to represent that the UE request inserts the value of home network, said MME confirms that the UE request inserts home network; If the value of said IEI, when being used to represent that the UE request inserts the value of local internet, said MME confirms that the UE request inserts local internet.
8. a communication system is characterized in that, this system comprises:
Home eNodeB is used to receive the attach request Attach Request message that user equipment (UE) sends, and gives Mobility Management Entity MME with this Attach Request forwards;
Mobility Management Entity MME is used for obtaining the Attach Request message that UE sends through Home eNodeB, confirms that through Attach Request message UE supports the CSFB function, and activates the CSFB function of this UE through the attaching process of UE;
Wherein, said MME comprises:
Information acquisition unit is used to obtain the Attach Request message that UE sends, and from Attach Request message, obtains type of attachment Attach Type, and according to the indication of said Attach Type, confirms that this UE supports the CSFB function; And, obtain the information that the UE request inserts local network;
Activate the unit, be used for activating the CSFB function of the UE that supports the CSFB function through the attaching process of UE;
Indicating member is used for the information according to the local network of UE request access, the indication Home eNodeB is set up local network for this UE carrying.
9. system according to claim 8; It is characterized in that; Said information acquisition unit; Through the type of attachment Attach Type that carries in the said Attach Request message; The request type Request Type that perhaps carries in the connection request PDN Connectivity Request of the Packet Data Network message through the Home eNodeB forwarding, the session management information that perhaps passes through the evolution of UE transmission responds ESM Information Response message, obtains the information of the local network of UE request access.
10. system according to claim 9; It is characterized in that; Said information acquisition unit, the information of the local network that the UE that obtains through said ESM Information Response message request inserts, the APN APN information of the local network that inserts for the UE request.
11. system according to claim 8 is characterized in that, said Home eNodeB comprises:
Retransmission unit is used to receive the Attach Request message that UE sends, and gives MME with this Attach Request forwards;
The unit is set up in carrying, be used for according to said MME send for UE sets up the indication of the carrying of local network, be established to the radio bearer of local network for this UE;
The Data Transmission Controlling unit is used for through said radio bearer, and control data transmits between the local network of UE and this UE request access.
12. a subscriber equipment is characterized in that, said subscriber equipment comprises:
CSFB function notification unit; Be used for through send attach request Attach Request message to Home eNodeB; Comprising type of attachment Attach Type, through the indication of said Attach Type, the said subscriber equipment of informing network side is supported return circuit exchange CSFB function;
Request inserts local network element; Be used for through said Attach Request message or the connection request PDN Connectivity Request of Packet Data Network message; Or the session management information of evolution response ESM Information Response message, the information that said user equipment requests is inserted local network sends to Home eNodeB;
Data transmission unit is used for the control according to Home eNodeB, is the radio bearer that said subscriber equipment is set up local network through Home eNodeB, realizes the transfer of data with local network.
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| CN104581673A (en) * | 2013-10-14 | 2015-04-29 | 华为技术有限公司 | Method, user equipment (UE) and network equipment for switching standby mode |
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