CN102740384A - Tunnel information reporting method and system thereof - Google Patents

Tunnel information reporting method and system thereof Download PDF

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Publication number
CN102740384A
CN102740384A CN2011100852830A CN201110085283A CN102740384A CN 102740384 A CN102740384 A CN 102740384A CN 2011100852830 A CN2011100852830 A CN 2011100852830A CN 201110085283 A CN201110085283 A CN 201110085283A CN 102740384 A CN102740384 A CN 102740384A
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tunnel information
mme
bpcf
pcrf
tau
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毕以峰
刘国燕
宗在峰
周晓云
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ZTE Corp
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ZTE Corp
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Priority to CN2011100852830A priority Critical patent/CN102740384A/en
Priority to PCT/CN2012/072046 priority patent/WO2012136088A1/en
Publication of CN102740384A publication Critical patent/CN102740384A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a tunnel information reporting method and a system thereof. The method includes that: when a mobile management unit (MME) receives a tracking area update (TAU) message and determines that the TAU message meets at least one of the following conditions, obtained tunnel information is notified to a gateway of an evolved packet core (EPC) network: the TAU with cross home base station switching, the TAU with MME replacement, the TAU with service gateway (S-GW) replacement, the inconsistency of tunnel information received from a home base station and tunnel information stored by the MME, and the inconsistency of tunnel information received from a source MME by a target MME and the tunnel information received from the home base station; and the gateway of the EPC controls a functional entity through a strategy which is sent to a fixed network through a strategy and charging rule functional entity. Through the method and the system, strategy intercommunication of a mobile network and the fixed network is realized, and the quality of service (QoS) of the home base station is ensured.

Description

The method and system that a kind of tunnel information reports
Technical field
The present invention relates to the mobile network and the fixed network integration technology of the communications field, relate in particular to the method and system that a kind of tunnel information reports.
Background technology
Third generation partner program (3GPP; Grouping system (the EPS of evolution 3rd Generation Partnership Project); Evolved Packet System) by the Universal Terrestrial Radio Access Network (E-UTRAN of evolution; Evolved Universal Terrestrial Radio Access Network), mobile management unit (MME; Mobility Management Entity), gateway (S-GW; Serving Gateway), the authentication and authorization charging (AAA of grouped data network gateway (P-GW, Packet Data Network Gateway), home subscriber server (HSS, Home Subscriber Server), 3GPP; Authentication, Authorization and Accounting) server, "Policy and Charging Rules Function entity (PCRF, Policy and Charging Rules Function) and other support nodes form.Shown in the EPS framework among Fig. 1.Wherein, MME is responsible for the related work of the chain of command such as processing and the contextual management of user's mobile management of mobile management, Non-Access Stratum signaling; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, between E-UTRAN and P-GW, transmits data, and is responsible for pending datas such as paging are carried out buffer memory; P-GW is the borde gateway of EPS and packet data network (PDN, Packet Data Network), and the access of being responsible for PDN reaches functions such as between EPS and PDN, transmitting data; Wherein S-GW and P-GW can close when network design is realized and establish also and can set up separately, close can be called evolution block core net (EPC, Evolved Packet Core) gateway or integrated service gateway after establishing.PCRF is the "Policy and Charging Rules Function entity, and it links to each other through receiving interface Rx and carrier network agreement (IP, Internet Protocol) business network; Obtain business information, in addition, it also links to each other with gateway device in the network through the Gx/Gxc interface; Be responsible for initiating the foundation that IP carries; Guarantee the service quality (QoS, Quality of Service) of business datum, and the control of chargeing.
The EPS system supports evolution Home eNodeB (HeNB, Home evolved NodeB wherein also are called for short Home eNodeB among the present invention) to insert, and is as shown in Figure 1.HeNB is a kind of small-sized, lower powered base station, is deployed in indoor places such as family, office and enterprise building.HeNB inserts the core net of EPS usually through the fixed network circuit of renting.In order to ensure the safety of access, to introduce security gateway (SeGW, Security Gateway) in the core net and shield, the data between HeNB and the SeGW will adopt Internet Protocol Security (IPSec, IP Security) to encapsulate.HeNB can also can be connected to MME and S-GW through HeNB GW through being directly connected to the MME and the S-GW of core net behind the ipsec tunnel of setting up with SeGW, and promptly HeNB GW is an optional network element.Simultaneously, in order to realize that HeNB is managed, introduced network element Home eNodeB management system (HeMS, Home eNodeB Management System).In addition, UMTS (UMTS, Universal Mobile Telecommunications System) is supported the access of Home eNodeB (HNB, Home NodeB).Correlation technique and HeNB are similar.
Because the QoS of the fixed network circuit of H (e) NB (being the general designation of HeNB and HNB) access normally receives owner and the fixed network operator's of H (e) NB signatory restriction; Therefore; When 3GPP UE inserted 3GPP core net access service through H (e) NB, required QoS can not surpass the signatory QoS of fixed network circuit that the fixed network operator can provide.Otherwise the QoS of UE access service will can not get ensureing, especially ensure the professional all the more so of bit rate (GBR, Guaranteed Bitrate).Therefore, for 3GPP network and fixed network, need the unified mechanism of control of a cover to realize the admittance control of user/connection/business.Current by the preliminary scheme of accepting of normal structure, (HeNB situation) as shown in Figure 1.The policy control of 3GPP system and charging (PCC, Policy Control and Charging) network element PCRF passes through S9 *Policy control functions entity (the BPCF of interface and fixed network; Broadband Policy Control Function) links to each other; The intercommunication of implementation strategy and to the management of resource; So just can realize control of fixed network reasonable resources and management, preferentially guarantee the higher resource of priority that inserts through H (e) NB.
As stated, be that H (e) the NB circuit that inserts provides QoS to guarantee if require fixed network, fixed network need be located the fixed network circuit (being called backhaul in the technical specification, i.e. the fixed network backhaul network) at current H (e) NB place.In the prior art, be to locate the fixed network circuits through skin or the information such as local ip address and port numbers of H (e) NB.This information sends to PCRF from flow process or the PDN connection building process that H (e) NB adheres to through terminal (UE, User Equipment), and PCRF finds the BPCF of the fixed network circuit of this H of resource management and control (e) NB according to this information, and sets up S9 with it *Session.
According to existing technology, UE switches to microcellulor from macrocellular, also can between different microcellulors, switch, and concrete flow process is as shown in Figure 2, mainly may further comprise the steps:
Step 201, UE inserts from source base station (macrocellular or microcell base station, S-(H) eNB), is initiating switching sometime, and UE selects to insert from target BS T-HeNB.
Step 202, S-(H) eNB sends handoff request message to source MME (being S-MME).
Step 203, S-MME sends and transmits RELOCATION REQUEST message to target MME (being T-MME), and this message is used for transmitting contextual information to target side, and the notification target side is done handover operation.
Step 204, if the S-GW reorientation has taken place, then this moment, T-MME will send the establishment conversation request message to target S-GW (being T-S-GW), and can receive the establishment conversational response message from T-S-GW; If the S-GW reorientation does not take place, also be that S-S-GW and T-S-GW are same gateways, then the operation of this step is skipped and is not carried out.
Step 205, T-MME sends handoff request message to target BS T-HeNB, and can receive the switch acknowledgment message that T-HeNB responds; If the S-GW reorientation has taken place in the step 204 before, this step 205 also need be created the user face data passage between T-HeNB and the T-S-GW so.
Step 206, T-MME sends to S-MME and transmits relocation response message, as the response to step 203.
Step 207, S-MME sends switching command to source base station, and source base station is transmitted switching command to UE, and notice UE switches.
Step 208, UE sends to switch to T-HeNB and confirms message, and UE switches to target side with wireless channel.
Step 209, T-HeNB sends handoff notification message to T-MME.
Step 210, T-MME and S-MME intercommunication are transmitted reorientation and are accomplished notice/acknowledge message.
Step 211, if the S-GW reorientation has taken place, T-MME sends and revises bearing request message to T-S-GW, as response, T-S-GW sends to T-MME and revises bearing response message; Simultaneously, the T-S-GW that is triggered can send to P-GW and revise bearing request message, and P-GW also can respond to S-S-GW and revise bearing response message.
If reorientation does not take place S-GW, T-S-GW promptly is S-S-GW so; T-MME only can revise with the S-GW intercommunication and carry requests/response messages, and the interaction message between S-GW and the P-GW is not carried out.
Step 212, if P-GW has received the modification bearing request message from S-GW, P-GW can be used to upgrade the IP-CAN session with PCRF intercommunication IP connected reference network (IP-CAN, IP-Connectivity Access Network) session modification step; If P-GW does not receive that not having special information to be used for notice in the bearing modification message that trigger messages or P-GW receive gives PCRF, then this step skips over and does not carry out.
Step 213, after the terminal switches to target BS, initiating updating of tracking area (TAU, Tracking Area Update) operation, the user upgrades the MM Context of this UE at MME.
In the present invention, claim that this TAU is operating as the TAU that strides base station (HeNB or eNB) switching.
Step 214, S-MME sends UE context release order message to source base station, is used to discharge the context of this user in the source network side.
So far, switch completion.
Have a following defective through analyzing above-mentioned switch step, can finding out: when the tunnel information of HeNB takes place to change, the BPCF of fixed network can't obtain correct tunnel information and cause can't the implementation strategy intercommunication or intercommunication make mistakes.
Except that above-mentioned switching situation; The terminal maybe be because problems such as load sharings when carrying out the TAU operation; Cause HeNB or eNB not to take place to change and reorientation has taken place for S-GW or MME; At this moment S-GW also can't obtain correct tunnel information, thus cause BPCF can't the implementation strategy intercommunication or intercommunication make mistakes, the QoS of HeNB also can't be guaranteed so.
Summary of the invention
In view of this, main purpose of the present invention is the method and system that provides a kind of tunnel information to report, to realize the tactful intercommunication of mobile network and fixed network, the QoS of assurance Home eNodeB.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the method that a kind of tunnel information reports, this method comprises:
Mobile management unit (MME) is notified the gateway to evolution block core net (EPC) with the tunnel information that obtains when receiving tracing section updating (TAU) message and judge any one or the multiple combination meet in the following condition: the tunnel information that tunnel information that said TAU receives for the TAU that gateway (S-GW) takes place changes, from Home eNodeB for MME the takes place TAU that changes, said TAU for the TAU that switches that strides Home eNodeB, said TAU and said MME store is inconsistent, target mobile management unit (T-MME) tunnel information that mobile management unit (S-MME) is received from the source and the tunnel information received from Home eNodeB are inconsistent;
The gateway of said EPC sends to said tunnel information the policy control functions entity (BPCF) of fixed network through "Policy and Charging Rules Function entity (PCRF).
This method further comprises: when TAU operated, said Home eNodeB transmitted message through initial UE message or up Non-Access Stratum (NAS), and tunnel information is carried to MME.
The gateway of said EPC comprises S-GW and grouped data network gateway (P-GW),
Accordingly, said MME notifies the gateway to EPC with said tunnel information, and the gateway of said EPC through the BPCF that PCRF sends to fixed network, is specially tunnel information:
Said MME is through establishment, modification or refreshing conversational request message or revise bearing request message, and said tunnel information is announced to said S-GW;
Said S-GW is through establishment, modification or refreshing conversational request message or revise bearing request message or agent binding update (PBU) message, and said tunnel information is announced to said P-GW;
Said P-GW announces said tunnel information to said PCRF through IP connected reference network (IP-CAN) session modification message;
Said PCRF is through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
The gateway of said EPC comprises S-GW,
Accordingly, said MME notifies the gateway to EPC with said tunnel information, and the gateway of said EPC through the BPCF that PCRF sends to fixed network, is specially tunnel information:
Said MME is through establishment, modification or refreshing conversational request message or revise bearing request message, and said tunnel information is announced to said S-GW;
Said S-GW revises message through gateway control session said tunnel information is announced to said PCRF;
Said PCRF is through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
Said PCRF is through setting up or revise S9 *The session operation announces the tunnel information that obtains to BPCF, is specially:
If do not have S9 between PCRF and the BPCF *Session, then PCRF selects BPCF according to the tunnel information that obtains, and initiates S9 *Operation is set up in session, and tunnel information is sent to the BPCF of selection;
If between PCRF and the BPCF S9 is arranged *Session, then PCRF verifies whether former BPCF is the BPCF of tunnel information indication, if then PCRF initiates S9 *Session modification is operated, and tunnel information is sent to BPCF; Then PCRF newly selects BPCF and initiates S9 according to tunnel information if not, *Operation is set up in session, tunnel information is sent to the BPCF of new selection.
Said tunnel information comprises the local ip address of Home eNodeB.
Said tunnel information also comprises one or more in the following information:
The universe name (FQDN) of BPCF;
The local port number of Home eNodeB;
The address and/or the port numbers of one of the end points in IP fail safe (IPsec) tunnel security gateway (SeGW);
The identify label of Home eNodeB;
The VLAN ID (VLAN ID) at Home eNodeB place.
The system that the present invention also provides a kind of tunnel information to report, this system comprises: the gateway of MME and EPC, wherein,
Said MME; Be used for when receiving TAU message and judge any one or the multiple combination meet following condition, notifying the gateway to said EPC with the tunnel information that obtains: tunnel information that the tunnel information that tunnel information that said TAU receives for the TAU that S-GW takes place changes, from Home eNodeB for MME the takes place TAU that changes, said TAU for the TAU that switches that strides Home eNodeB, said TAU and said MME store is inconsistent, T-MME receives from S-MME and the tunnel information of receiving from Home eNodeB are inconsistent;
The gateway of said EPC is used for said tunnel information is sent to through PCRF the BPCF of fixed network.
This system also comprises: Home eNodeB, be used for when TAU operates, and transmit message through initial UE message or up NAS, tunnel information is carried to MME.
The gateway of said EPC comprises S-GW and P-GW,
Accordingly, said MME is further used for, and through establishment, modification or refreshing conversational request message or modification bearing request message, said tunnel information is announced to said S-GW;
Said S-GW is used for through establishment, modification or refreshing conversational request message or modification bearing request message or PBU message said tunnel information being announced to said P-GW;
Said P-GW is used for through IP-CAN session modification message said tunnel information being announced to said PCRF;
Said PCRF is used for through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
The gateway of said EPC comprises S-GW,
Accordingly, said MME is further used for, and through establishment, modification or refreshing conversational request message or modification bearing request message, said tunnel information is announced to said S-GW;
Said S-GW is used for revising message through gateway control session said tunnel information is announced to said PCRF;
Said PCRF is used for through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
Said PCRF is further used for,
Between said PCRF and BPCF, there is not S9 *During session, select BPCF, initiate S9 according to the tunnel information that obtains *Operation is set up in session, and tunnel information is sent to the BPCF of selection;
Between said PCRF and BPCF, S9 is arranged *During session, verify whether former BPCF is the BPCF of tunnel information indication, if then initiate S9 *Session modification is operated, and tunnel information is sent to BPCF; If, then newly do not select BPCF and initiate S9 according to tunnel information *Operation is set up in session, tunnel information is sent to the BPCF of new selection.
Said tunnel information comprises the local ip address of Home eNodeB.
Said tunnel information also comprises one or more in the following information:
The FQDN of BPCF;
The local port number of Home eNodeB;
The address of one of the end points in IPsec tunnel SeGW and/or port numbers;
The identify label of Home eNodeB;
The VLAN ID at Home eNodeB place.
The method and system that a kind of tunnel information provided by the present invention reports; MME is when receiving TAU message and judge any one or the multiple combination meet in the following condition, and the tunnel information that tunnel information is notified TAU for S-GW takes place changing of TAU for MME takes place changing of the TAU of the gateway to EPC: TAU for striding Home eNodeB and switching, TAU, TAU, the tunnel information received from Home eNodeB and MME store is inconsistent, target mobile management unit (T-MME) tunnel information that mobile management unit (S-MME) is received from the source and the tunnel information of receiving from Home eNodeB are inconsistent; The gateway of EPC sends to the tunnel information of receiving the BPCF of fixed network through PCRF.
Through the present invention; Under the situation of S-GW non-tunnel information (such as S-GW reorientation has taken place; Target S-GW non-tunnel information then); The TAU operation makes S-GW obtain tunnel information, and has guaranteed in follow-up gateway control session foundation/retouching operation and PBU operation, to have carried correct tunnel information; If the change of tunnel information has taken place, BPCF can get access to correct tunnel information.Thereby realized the tactful intercommunication of mobile network and fixed network, guaranteed the QoS of Home eNodeB.
Description of drawings
Fig. 1 is the Organization Chart that EPS, fixed network and H (e) NB merges in the prior art;
Fig. 2 strides the flow chart that switch the base station for UE in the prior art;
The method flow diagram that Fig. 3 reports for a kind of tunnel information of the present invention;
Fig. 4 is the method flow diagram that the tunnel information of the embodiment of the invention one reports;
Fig. 5 is the method flow diagram that the tunnel information of the embodiment of the invention two reports.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment technical scheme of the present invention is further set forth in detail.
At first the tunnel information in the embodiment of the invention is introduced.In the prior art, Home eNodeB HeNB sets up the IPsec tunnel between HeNB and the SeGW when inserting EPC, and as shown in fig. 1, wherein HeNB and SeGW are respectively two end points in this IPsec tunnel.Tunnel information described in the embodiment of the invention is the outer IP address of one of the end points in this IPsec tunnel HeNB, or claims the local ip address of HeNB, in addition can also comprise in the following information one or more:
The universe name of BPCF (FQDN, Fully Qualified Domain Name);
The outer port numbers of HeNB (or local port number of title HeNB), this port numbers can be User Datagram Protocol (UDP, a User Datagram Protocol) port numbers;
The address of one of the end points in IPsec tunnel SeGW and/or port numbers (udp port number);
The identify label of HeNB is like global mobile radio station/terminal iidentification (IMSI, International Mobile Station Identity);
The VLAN ID (VLAN ID, Virtual Local Area Network Identity) at HeNB place.
Wherein, Skin/local ip address of HeNB is distributed by fixed network/WLAN (WLAN, Wireless LAN) Access Network; If there is network address translation (NAT in the wlan network; Network Address Translation), then be public network IP address and udp port number after NAT transducer ((RG, Residential Gateway) serves as by the home gateway) conversion.
This locality/outer IP address fixed network the information such as (and port numbers) that contains HeNB in the tunnel information; Because tunnel information is to be provided by WLAN Access Network/fixed network; So according to this address, PCRF just can choose the BPCF (fixed network/WLAN access network elements) that serves this place, address circuit; In addition, WLAN Access Network/fixed network can navigate to the fixed network circuit at HeNB place, and can guarantee the QoS on this circuit according to policing rule according to this tunnel information.
If be not operated in bridge mode during HeNB access fixed network/WLAN Access Network through RG or RG as router feature; The IP address that when inserting, obtains of HeNB is that fixed network/WLAN Access Network can unique identification and location like this, can locate the fixed network circuit at this HeNB place according to this address; Just there is related network elements this address when HeNB access fixed network/WLAN Access Network be that its distribution is (such as broadband access clothes gateway/Broadband Remote Access Server (BNG/BRAS; Broadband Network Gateway/Broadband Remote Access Server)), this address is exactly this locality/outer IP address.
If during HeNB access fixed network/WLAN Access Network through RG as router feature; The address that when inserting, obtains of HeNB is that RG is the private IP address of its distribution like this, and tunnel information can not be participated in constituting in this address, in this case; When HeNB and SeGW set up the IPsec tunnel; SeGW number feeds back to HeNB with skin/local ip address and the udp port that RG does after the network address translation, and HeNB utilizes this address architecture tunnel information, can locate the fixed network circuit at this HeNB place according to this address.Except this locality/outer IP address (and port numbers), can also comprise the information such as FQDN of BPCF in the tunnel information.
For realizing the tactful intercommunication of mobile network and fixed network, guarantee the QoS of Home eNodeB, the method that a kind of tunnel information provided by the present invention reports, as shown in Figure 3, mainly may further comprise the steps:
Step 301, MME notifies the gateway to EPC with the tunnel information that obtains when receiving TAU message and judge any one or the multiple combination meet in the following condition:
Said TAU is for striding the TAU that Home eNodeB switches;
The TAU that MME changes for taking place in said TAU;
The TAU that S-GW changes for taking place in said TAU;
The tunnel information of tunnel information of receiving from Home eNodeB and said MME storage is inconsistent;
Target mobile management unit (T-MME) tunnel information that mobile management unit (S-MME) is received from the source is inconsistent with the tunnel information of receiving from Home eNodeB.
Preferable, Home eNodeB can transmit message through initial UE message or up Non-Access Stratum (NAS, Non-Access Stratum) when TAU operates, tunnel information is carried to MME.
Step 302, the gateway of EPC sends to BPCF with tunnel information through PCRF.
Wherein, the gateway of said EPC can comprise S-GW and P-GW, and is so corresponding, and said MME notifies the gateway to EPC with tunnel information, and the gateway of EPC through the BPCF that PCRF sends to fixed network, is specially tunnel information:
MME is through establishment, modification or refreshing conversational request message or revise bearing request message, and tunnel information is announced to said S-GW;
S-GW is through establishment, modification or refreshing conversational request message or revise bearing request message or agent binding update (PBU, Proxy Binding Update) message, and tunnel information is announced to P-GW;
P-GW announces tunnel information to PCRF through IP-CAN session modification message;
PCRF is through creating or revise S9 *The session operation announces the tunnel information that obtains to BPCF.
The gateway of said EPC also can include only S-GW, and is so corresponding, and said MME notifies the gateway to EPC with tunnel information, and the gateway of EPC through the BPCF that PCRF sends to fixed network, is specially tunnel information:
MME is through establishment, modification or refreshing conversational request message or revise bearing request message, and tunnel information is announced to S-GW;
S-GW revises message through gateway control session tunnel information is announced to PCRF;
PCRF is through creating or revise S9 *The session operation announces the tunnel information that obtains to BPCF.
The method that corresponding above-mentioned tunnel information reports, the system that a kind of tunnel information provided by the present invention reports need comprise at least: the gateway of MME and EPC, wherein,
MME; Be used for when receiving TAU message and judge any one or the multiple combination meet following condition, tunnel information that the tunnel information that the tunnel information that obtains is notified TAU for S-GW takes place changing of TAU for MME takes place changing of the TAU of the gateway to EPC: TAU for striding Home eNodeB and switching, TAU, TAU, the tunnel information received from Home eNodeB and MME store is inconsistent, T-MME receives from S-MME and the tunnel information of receiving from Home eNodeB are inconsistent;
The gateway of EPC is used for the tunnel information of receiving is sent to through PCRF the BPCF of fixed network.
Preferable, this system can also comprise: Home eNodeB, be used for when TAU operates, and transmit message through initial UE message or up NAS, tunnel information is carried to MME.
Preferable, the gateway of said EPC can comprise S-GW and P-GW, corresponding, MME is further used for, and through establishment, modification or refreshing conversational request message or modification bearing request message, tunnel information is announced to S-GW;
S-GW is used for through establishment, modification or refreshing conversational request message or modification bearing request message or PBU message tunnel information being announced to P-GW;
P-GW is used for through IP-CAN session modification message tunnel information being announced to PCRF;
PCRF is used for through creating or revise S9 *The session operation announces tunnel information to BPCF.
The gateway of said EPC also can include only S-GW, and corresponding, MME is further used for, and through establishment, modification or refreshing conversational request message or modification bearing request message, tunnel information is announced to S-GW;
S-GW is used for revising message through gateway control session tunnel information is announced to PCRF;
PCRF is used for through creating or revise S9 *The session operation announces the tunnel information that obtains to BPCF.
Combine specific embodiment that the method that tunnel information of the present invention reports is elaborated below again.
Embodiments of the invention one are as shown in Figure 4; UE is in the TAU operating process; Tunnel information is reported MME, and MME upgrades tunnel information according to the current whether needs of condition judgment to core net and fixed network, upgrades if desired; Then operate, and PCC session operation reports tunnel information successively through conversation establishing operation or bearing modification; If do not need to upgrade, then carry out existing TAU operation, prior art is not done any change.Idiographic flow may further comprise the steps:
Step 401, UE inserts EPC from macro base station or Home eNodeB.Set up GTP tunnel between source S-GW (being S-S-GW) and the P-GW; Set up the IP-CAN session between PCRF and the P-GW; Set up S9 between PCRF and the BPCF *Session (HeNB access), or do not set up S9 *Session (macrocellular access).
Step 402, UE receives triggering and initiates the TAU operation, and concrete trigger condition can be one or several (following for for example, as not get rid of other reasons in addition) in the following condition:
Periodically TAU:UE whenever can upgrade the tracking area (TA, Tracking Area) of oneself to core net at a distance from one period regular time, and the operation of utilization is exactly TAU;
UE has taken place to move, and has changed TA;
The base station switching of (comprising macro base station and HeNB) has taken place to stride in UE;
Load balancing causes TAU (HeNB can not change under this scene, but MME or S-GW may take place because of the problem of load balancing to change or reorientation);
UE switches to E-UTRAN by the 3G system.
Step 403, UE sends the TAU request message to target MME (being T-MME).
The TAU request message is the message of a UE to the transparent transmission HeNB of T-MME, and after this message arrived HeNB, HeNB can be packaged into a cell with this message, is placed in the S1 interface message that HeNB mails to T-MME and sends to T-MME; Concrete S1 interface message can be: initial UE message (initial UE message) or up Non-Access Stratum (NAS, Non-Access Stratum) transmit message (uplink NAStransport message).
Among the present invention, require HeNB when TAU operates, in initial UE message or uplink NAStransport message, carry the tunnel information of HeNB and give MME (if the replacing of MME has taken place, then being T-MME, shown in figure).
Step 404, T-MME sends context request message to source MME (being S-MME), and this message is used for the contextual information to source MME request UE; S-MME can return context to T-MME receives the response, and the contextual information of the UE of S-MME storage is sent to T-MME.
Among the present invention,, require S-MME that the tunnel information of storage is sent to T-MME as a kind of execution mode, concrete:
If switch to another one HeNB from a HeNB, then the tunnel information of S-MME transmission is the tunnel information of source HeNB, and this tunnel information S-MME before TAU takes place obtains;
If switch to HeNB from macrocellular, then the tunnel information of S-MME transmission is a non-tunnel information in null value or the context;
Iff is the reorientation of MME to have taken place and HeNB does not change, and what then S-MME sent is exactly the tunnel information of this HeNB, and this tunnel information S-MME before TAU takes place obtains;
If MME does not change (such as the scene of cycle T AU), then step 404 is skipped and is not carried out.
Step 405, this step are optional step.If the failure of the integrated authentication of TAU message, MME can initiate the authentication again to the terminal.
Step 406, T-MME sends context response information to S-MME.
Step 406a, before execution in step 407, T-MME will do internal decision making/judgment processing:
If T-MME is different with the tunnel information of receiving from S-MME from the tunnel information that HeNB receives, then the T-MME decision will report up-to-date tunnel information (tunnel information that promptly obtains from HeNB) through step 407;
If T-MME judges current TAU and occurs in to stride the TAU that HeNB switches or from the macrocellular to HeNB, switches that then the MME decision will report up-to-date tunnel information (tunnel information that promptly obtains from HeNB) through step 407;
If T-MME judges current S-GW reorientation has taken place that then the MME decision will report up-to-date tunnel information (tunnel information that promptly obtains from HeNB) through step 407;
If T-MME judges that reorientation has taken place MME, then the MME decision will report up-to-date tunnel information (tunnel information that promptly obtains from HeNB) through step 407;
If T-MME judges when the combination in any of above situation has taken place that then the MME decision will report up-to-date tunnel information through step 407.
Step 407, according to the decision-making of step 406a, T-MME reports or does not report tunnel information to give S-GW.Do not report under the situation of tunnel information in decision-making, subsequent step is according to the operation of prior art; Report in decision under the situation of tunnel information:
If the S-GW reorientation has taken place, then T-MME sends and creates conversation request message to T-S-GW, carries tunnel information in this message;
If the S-GW reorientation does not take place, then T-MME sends and revises bearing request message to S-GW, carries tunnel information in this message.
Step 408, if T-S-GW has received the tunnel information that step 407 is carried, T-S-GW can send and revise bearing request message to P-GW, as response, P-GW sends to T-S-GW and revises bearing response message.Like this, tunnel information just has been reported to P-GW.
Step 409, if P-GW has received the tunnel information that step 408 is carried, P-GW can initiate the operation of IP-CAN session modification to PCRF, and tunnel information is reported to PCRF.
Step 409a, if PCRF has received the tunnel information that step 409 is carried, PCRF can initiate S9 to the BPCF of fixed network *Session foundation/retouching operation, and tunnel information is reported to the BPCF of fixed network, be specially:
If do not have S9 between PCRF and the BPCF *Session, then PCRF selects BPCF according to the tunnel information that obtains, and initiates S9 *Operation is set up in session, and tunnel information is sent to selected BPCF;
If existing S9 between PCRF and the BPCF *Session, then PCRF verifies whether former BPCF is the BPCF of tunnel information indication: if then PCRF initiates S9 *Session modification is operated, and tunnel information is sent to BPCF; Then PCRF newly selects BPCF and initiates S9 according to tunnel information if not, *Operation is set up in session, tunnel information is sent to the BPCF of new selection.
Step 410, T-S-GW responds establishment conversational response/modification bearing response message to S-MME after receiving the response message of step 408.
Step 411, T-MME and S-MME and HSS executing location are upgraded and the canceling position operation behind the TAU.
Step 412, source resource and context discharge.
Step 413, T-MME and UE intercommunication TAU acceptance/acknowledge message.
So far, the TAU operation is accomplished.
Need to prove; S-GW, P-GW, PCRF are after receiving tunnel information in the above-mentioned steps; All rearward report successively; A kind of optimal way of optional conduct, identical with former tunnel information on this network element if S-GW, P-GW, PCRF find this tunnel information after receiving tunnel information, then any one network element can determine no longer rearward to report this tunnel information.
Optional; HeNB is last can to dispose fixed network support about the fixed network link backhaul at this HeNB place/do not support and information that EPC carries out tactful intercommunication; HeNB can announce this information (such as through network management information or S1 interface message) and give MME like this; When thereby whether MME reports tunnel information in decision-making; Can consider this situation, if that is: the fixed network at this HeNB place is not supported to carry out tactful intercommunication with EPC, MME just can not report tunnel information to give GW and the PCRF of EPC through above-mentioned step so more.
Embodiments of the invention two are as shown in Figure 5; This embodiment basic principle is identical with embodiment one; Difference is embodied in tunnel information and arrives the problem that how to report behind the S-GW; Tunnel information is to report P-GW by S-GW through revising bearing request message among the embodiment one, reports PCRF by P-GW again and arrives BPCF's at last.Present embodiment two segmentations also have two kinds of different concrete realizations:
1, after tunnel information arrives S-GW; S-GW gives P-GW through the PBU information reporting; P-GW returns agent binding to S-GW and confirms (PBA, Proxy Binding Acknowledgement) message, and subsequent operation (step 509～513) is with the corresponding step (step 409～step 413) of embodiment one;
2, after tunnel information arrives S-GW; S-GW sets up operation (reorientation takes place S-GW) or retouching operation (reorientation does not take place S-GW) through gateway control session and reports PCRF (among the figure shown in the step 507a); Report BPCF (step 509a) by PCRF again, subsequent operation (step 510～513) is with the corresponding step (step 410～413) of embodiment one.
In addition, all the other steps of embodiment two (step 501～507) are with the corresponding step (step 401～407) of embodiment one.
Through above embodiment; Two problems that propose in the background technology have mainly been solved: 1, under the situation of S-GW non-tunnel information, (reorientation has taken place such as S-GW; Target S-GW non-tunnel information then); TAU operation shown in the foregoing description makes S-GW obtain tunnel information, and has guaranteed in follow-up gateway control session foundation/retouching operation and PBU operation, to have carried correct tunnel information; If 2 the change (after the switching of mentioning in the background technology of striding HeNB) of tunnel information has taken place, BPCF can get access to correct tunnel information.Thereby realized the tactful intercommunication of mobile network and fixed network, guaranteed the QoS of Home eNodeB.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.

Claims (14)

1. the method that tunnel information reports is characterized in that, this method comprises:
Mobile management unit (MME) is notified the gateway to evolution block core net (EPC) with the tunnel information that obtains when receiving tracing section updating (TAU) message and judge any one or the multiple combination meet in the following condition: the tunnel information that tunnel information that said TAU receives for the TAU that gateway (S-GW) takes place changes, from Home eNodeB for MME the takes place TAU that changes, said TAU for the TAU that switches that strides Home eNodeB, said TAU and said MME store is inconsistent, target mobile management unit (T-MME) tunnel information that mobile management unit (S-MME) is received from the source and the tunnel information received from Home eNodeB are inconsistent;
The gateway of said EPC sends to said tunnel information the policy control functions entity (BPCF) of fixed network through "Policy and Charging Rules Function entity (PCRF).
2. the method that reports according to the said tunnel information of claim 1 is characterized in that, this method further comprises: when TAU operated, said Home eNodeB transmitted message through initial UE message or up Non-Access Stratum (NAS), and tunnel information is carried to MME.
3. the method that reports according to the said tunnel information of claim 1 is characterized in that, the gateway of said EPC comprises S-GW and grouped data network gateway (P-GW),
Accordingly, said MME notifies the gateway to EPC with said tunnel information, and the gateway of said EPC through the BPCF that PCRF sends to fixed network, is specially tunnel information:
Said MME is through establishment, modification or refreshing conversational request message or revise bearing request message, and said tunnel information is announced to said S-GW;
Said S-GW is through establishment, modification or refreshing conversational request message or revise bearing request message or agent binding update (PBU) message, and said tunnel information is announced to said P-GW;
Said P-GW announces said tunnel information to said PCRF through IP connected reference network (IP-CAN) session modification message;
Said PCRF is through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
4. the method that reports according to the said tunnel information of claim 1 is characterized in that the gateway of said EPC comprises S-GW,
Accordingly, said MME notifies the gateway to EPC with said tunnel information, and the gateway of said EPC through the BPCF that PCRF sends to fixed network, is specially tunnel information:
Said MME is through establishment, modification or refreshing conversational request message or revise bearing request message, and said tunnel information is announced to said S-GW;
Said S-GW revises message through gateway control session said tunnel information is announced to said PCRF;
Said PCRF is through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
5. the method that reports according to claim 3 or 4 said tunnel informations is characterized in that, said PCRF is through setting up or revise S9 *The session operation announces the tunnel information that obtains to BPCF, is specially:
If do not have S9 between PCRF and the BPCF *Session, then PCRF selects BPCF according to the tunnel information that obtains, and initiates S9 *Operation is set up in session, and tunnel information is sent to the BPCF of selection;
If between PCRF and the BPCF S9 is arranged *Session, then PCRF verifies whether former BPCF is the BPCF of tunnel information indication, if then PCRF initiates S9 *Session modification is operated, and tunnel information is sent to BPCF; Then PCRF newly selects BPCF and initiates S9 according to tunnel information if not, *Operation is set up in session, tunnel information is sent to the BPCF of new selection.
6. the method that reports according to claim 1,2,3 or 4 said tunnel informations is characterized in that said tunnel information comprises the local ip address of Home eNodeB.
7. the method that reports according to the said tunnel information of claim 6 is characterized in that, said tunnel information also comprises one or more in the following information:
The universe name (FQDN) of BPCF;
The local port number of Home eNodeB;
The address and/or the port numbers of one of the end points in IP fail safe (IPsec) tunnel security gateway (SeGW);
The identify label of Home eNodeB;
The VLAN ID (VLAN ID) at Home eNodeB place.
8. the system that tunnel information reports is characterized in that, this system comprises: the gateway of MME and EPC, wherein,
Said MME; Be used for when receiving TAU message and judge any one or the multiple combination meet following condition, notifying the gateway to said EPC with the tunnel information that obtains: tunnel information that the tunnel information that tunnel information that said TAU receives for the TAU that S-GW takes place changes, from Home eNodeB for MME the takes place TAU that changes, said TAU for the TAU that switches that strides Home eNodeB, said TAU and said MME store is inconsistent, T-MME receives from S-MME and the tunnel information of receiving from Home eNodeB are inconsistent;
The gateway of said EPC is used for said tunnel information is sent to through PCRF the BPCF of fixed network.
9. the system that said according to Claim 8 tunnel information reports is characterized in that this system also comprises: Home eNodeB, be used for when TAU operates, and transmit message through initial UE message or up NAS, tunnel information is carried to MME.
10. the system that said according to Claim 8 tunnel information reports is characterized in that the gateway of said EPC comprises S-GW and P-GW,
Accordingly, said MME is further used for, and through establishment, modification or refreshing conversational request message or modification bearing request message, said tunnel information is announced to said S-GW;
Said S-GW is used for through establishment, modification or refreshing conversational request message or modification bearing request message or PBU message said tunnel information being announced to said P-GW;
Said P-GW is used for through IP-CAN session modification message said tunnel information being announced to said PCRF;
Said PCRF is used for through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
11. the system that said according to Claim 8 tunnel information reports is characterized in that the gateway of said EPC comprises S-GW,
Accordingly, said MME is further used for, and through establishment, modification or refreshing conversational request message or modification bearing request message, said tunnel information is announced to said S-GW;
Said S-GW is used for revising message through gateway control session said tunnel information is announced to said PCRF;
Said PCRF is used for through creating or revise S9 *The session operation announces the tunnel information that obtains to said BPCF.
12. the system according to claim 10 or 11 said tunnel informations report is characterized in that said PCRF is further used for,
Between said PCRF and BPCF, there is not S9 *During session, select BPCF, initiate S9 according to the tunnel information that obtains *Operation is set up in session, and tunnel information is sent to the BPCF of selection;
Between said PCRF and BPCF, S9 is arranged *During session, verify whether former BPCF is the BPCF of tunnel information indication, if then initiate S9 *Session modification is operated, and tunnel information is sent to BPCF; If, then newly do not select BPCF and initiate S9 according to tunnel information *Operation is set up in session, tunnel information is sent to the BPCF of new selection.
13. according to Claim 8, the system that reports of 9,10 or 11 said tunnel informations, it is characterized in that said tunnel information comprises the local ip address of Home eNodeB.
14. the system according to the said tunnel information of claim 13 reports is characterized in that, said tunnel information also comprises one or more in the following information:
The FQDN of BPCF;
The local port number of Home eNodeB;
The address of one of the end points in IPsec tunnel SeGW and/or port numbers;
The identify label of Home eNodeB;
The VLAN ID at Home eNodeB place.
CN2011100852830A 2011-04-06 2011-04-06 Tunnel information reporting method and system thereof Pending CN102740384A (en)

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