CN101541109A - Method and communication equipment for acquiring user surface address information of S1 interface of serving gateway - Google Patents
Method and communication equipment for acquiring user surface address information of S1 interface of serving gateway Download PDFInfo
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Abstract
The invention provides a method for acquiring user surface address information of an S1 interface of a serving gateway. The method mainly comprises the following steps that: a mobile management entity MME sends an indication message to an evolution base station eNB, and the indication message carries the user surface address information of the S1 interface of the objective serving gateway taking UE services of user equipment; and the eNB receives and analyzes the indication message to obtain the user surface address information of the S1 interface of the objective serving gateway. The invention also provides a mobile management entity and an evolution base station. The technical proposal provided by the invention provides a solving proposal for how the eNB acquires the user surface address information of the S1 interface of the serving gateway, thereby ensuring the normal expansion of user services.
Description
Technical field
The present invention relates to the communication technical field of evolved packet system, relate in particular to a kind of S1 interface user plane address information acquisition methods and communication equipment of gateway.
Background technology
Referring to Fig. 1, Fig. 1 is the structural representation of S1 interface in the existing evolved packet system (EPS, Evolved Packet System).Among the EPS, claim that the interface between Access Network and the core net is the S1 interface.The S1 interface can comprise S1 chain of command interface (S1-C) that is mainly used in control channel and the S1 interface in the user plane (S1-U) that is mainly used in transmitting user data.Particularly, as shown in Figure 1, on professional connection of UE, and it is S1-C that this UE exists the evolution base station (eNB) of Access Network side of wireless connections and the interface of being responsible between the Mobility Management Entity (MME) of the core-network side that the mobility to UE manages, eNB and the gateway (S-GW that is responsible for handling the UE business, Serving GW) interface between is S1-U, correspondingly, the carrying that can claim eNB and MME and be set up therebetween forms the S1 interface control plane, claims the transmission bearer of eNB and Serving GW and foundation therebetween to form the S1 interface user plane.
On the S1 interface user plane, can have a plurality of S1 interface user plane transmission bearers that are used for transmitting user data between eNB and the Serving GW usually, can claim that S1 interface user plane transmission bearer is System Architecture Evolution (SAE) carrying.Because a plurality of SAE carryings belong to different UE usually; therefore; eNB and Serving GW can set corresponding address information for the SAE carrying that belongs to a UE usually; the opposite end is by knowing self and the other side at the address information that this SAE carrying sets, and which UE the user data that can distinguish by this SAE carrying transmission belongs to.Can claim on the S1 interface user plane that the node at SAE carrying two ends is a S1 interface user plane address information at this SAE carrying institute addresses distributed information, as the S1 interface user plane address information of eNB, the S1 interface user plane address information of Serving GW.
In the practical application, the situation that the S1 interface user plane address of needs change Serving GW may occur, too much as the SAE carrying of handling on the Serving GW of source, make source Serving GW transship, some business of handling on the Serving GW of source need be switched on the target Serving GW, then the S1 interface user plane address of Serving GW is modified, and existing related specifications does not provide the relevant solution that how to make eNB know the relevant information after the change, then eNB is because of failing in time to know the S1 interface user plane address of target Serving GW, and influences normally carrying out of user UE.In addition,, can influence systematic function, make the service quality of customer service be difficult to be guaranteed if source Serving GW transships for a long time.
Summary of the invention
In view of this, the purpose of the embodiment of the invention is to provide a kind of method and communication equipment that obtains the S1 interface user plane address information of gateway, the business of being set up between UE and network side is connected, make eNB in time know the S1 interface user plane address information of the gateway of process change, guarantee normally carrying out of customer service.
A kind of S1 interface user plane address information acquisition methods of gateway comprises:
A, Mobility Management Entity MME send to evolution base station eNB with Indication message, carry the S1 interface user plane address information of the destination service gateway of accepting the UE business in the described Indication message;
B, described eNB receive described Indication message, according to the S1 interface user plane address information of the described destination service gateway that parses.
Preferably, after the described step B, this method further comprises:
Described destination service gateway obtains the S1 interface user plane address information of eNB on the S1 interface user plane transmission bearer that belongs to described UE between itself and the described eNB.
Preferably, described step B further comprises:
After described eNB receives described Indication message, S1 interface user plane address with this eNB on the described transmission bearer, change to the renewal S1 interface user plane address information of this eNB by the former S1 interface user plane address information of this eNB, with the renewal S1 interface user plane address information of described eNB response message, send to described MME by described Indication message;
The S1 interface user plane address information of obtaining eNB on the described transmission bearer comprises:
The renewal S1 interface user plane address information of the described eNB that described MME will receive sends to described destination service gateway, the renewal S1 interface user plane address information that described destination service gateway receives and stores described eNB.
Preferably, before the described steps A, this method further comprises:
The user data of the described UE that described eNB reception sources gateway issues according to the former S1 interface user plane address information indication position of described eNB;
After the renewal S1 interface user plane address information of described eNB sent to described MME, this method further comprised:
Described eNB is in preset period of time, the former S1 interface user plane address information that keeps described eNB, monitor the user data of the described UE that described source gateway issues to the former S1 interface user plane address information indication position of described eNB, if do not receive the described user data that described source gateway issues in described preset period of time, then described eNB discharges described former S1 interface user plane address information.
Preferably, the S1 interface user plane address information of obtaining eNB on the described transmission bearer comprises:
Described destination service gateway obtains the S1 interface user plane address information of described the above eNB of transmission bearer from core net inside.
Preferably, the described destination service gateway S1 interface user plane address information of obtaining described the above eNB of transmission bearer from core net inside comprises:
Described destination service gateway and described source gateway carry out alternately, when described source gateway obtains the user data of mutual described UE between described eNB and the described source gateway, the former S1 interface user plane address information of this eNB is with the former S1 interface user plane address information of the described eNB S1 interface user plane address information as this eNB on the described transmission bearer.
Preferably, after the described step B, this method further comprises:
Described eNB sends the uplink user data of described UE according to the S1 interface user plane address information of described destination service gateway to described destination service gateway.
Preferably, after described destination service gateway obtained the S1 interface user plane address information of described eNB, this method further comprised:
Described destination service gateway sends the down user data of described UE according to the S1 interface user plane address information of described eNB to described eNB.
Preferably, the S1 interface user plane address information of described destination service gateway comprises: the transmission network layer address of described destination service gateway and corresponding Tunnel Identifier;
The S1 interface user plane address information of described source gateway comprises: the transmission network layer address of described source gateway and corresponding Tunnel Identifier.
Preferably, the transmission network layer address of described destination service gateway and corresponding Tunnel Identifier are corresponding one by one with a transmission bearer that belongs to described UE;
Or the transmission network layer address of described destination service gateway and corresponding Tunnel Identifier, corresponding with a plurality of transmission bearers that belong to described UE.
Preferably, described UE has an IPv4 address, and/or, an IPv6 address.
Preferably, described Indication message is: wait to revise the System Architecture Evolution SAE carrying change request message that is provided with the Tunnel Identifier parameter of transport network layer address parameter and correspondence in the SAE carrying project information element;
Described MME sends to eNB with described Indication message and comprises:
Described MME sends to described eNB with the SAE carrying change request message of being furnished with the Tunnel Identifier of being furnished with described destination service gateway in the transmission network layer address of described destination service gateway, the described Tunnel Identifier parameter in the described transport network layer address parameter.
Preferably, described Indication message is:
The transmission bearer update inquiry information that sets in advance.
Preferably, before the described steps A, this method further comprises:
Described MME and described destination service gateway are mutual, obtain described destination service gateway for its with described eNB between belong to the S1 interface user plane address information of destination service gateway of the S1 interface user plane transmission bearer distribution of UE.
A kind of Mobility Management Entity comprises:
First sends information process unit, and Indication message is sent to eNB, carries the S1 interface user plane address information of the destination service gateway of accepting the UE business in the described Indication message.
Preferably, described Mobility Management Entity further comprises:
First receives information process unit, receive the response message of the described Indication message of described eNB transmission, carry described eNB in this response message and be the renewal S1 interface user plane address information of this eNB that the S1 interface user plane transmission bearer that belongs to described UE distributes, the renewal S1 interface user plane address information of described eNB is sent to described destination service gateway.
A kind of evolution base station comprises: second receives information process unit, memory cell;
Second receives information process unit, and the Indication message that the receiving mobility management entity sends parses the S1 interface user plane address information of the destination service gateway in this Indication message;
Memory cell is stored the described second S1 interface user plane address information that receives the described destination service gateway that information process unit parses from described Indication message.
Preferably, described evolution base station further comprises: allocation unit and second sends information process unit,
Allocation unit, after the described second reception information process unit is received described Indication message, the S1 interface user plane address of distributing this eNB for the transmission bearer that belongs to described UE, with the former S1 interface user plane address of this eNB on the described transmission bearer, change to the renewal S1 interface user plane address information of described eNB;
Second sends information process unit, returns the response message of described Indication message to described Mobility Management Entity, and the renewal S1 interface user plane address information of the described eNB that allocation unit is distributed sends to described MME by described response message.
Preferably, described evolution base station further comprises: timing unit, Data Receiving unit and address discharge control unit;
Described memory cell is further stored the former S1 interface user plane address information of described eNB and the renewal S1 interface user plane address information of eNB;
Timing unit after the described second transmission information process unit sends the renewal S1 interface user plane address information of described eNB, picks up counting;
The Data Receiving unit, S1 interface user plane address information according to described destination service gateway, monitor and receive the user data of the described UE that described destination service gateway issues, and in the preset period of time of timing unit institute timing, according to the former S1 interface user plane address information of described eNB, monitor and the user data of the described UE that the reception sources gateway issues to the former S1 interface user plane address information indication position of described eNB;
The address discharges control unit, and in the preset period of time of timing unit institute timing, the Data Receiving unit does not receive the described user data from the source gateway, then discharges the former S1 interface user plane address information of the described eNB of described cell stores;
Described timing unit is in the preset period of time of institute's timing, if the Data Receiving unit receives the user data of the UE that the source gateway issues, then reclocking, if in the preset period of time of institute's timing, the Data Receiving unit does not receive the user data of the UE that the source gateway issues, then stops timing.
Technique scheme provided by the present invention, UE is connected with business between the network side in EPS, when needing the change gateway, the MME that is connected by this business sends to the eNB that this business connects with the S1 interface user plane address information of destination service gateway, make eNB in time know the S1 interface user plane address information of destination service gateway, guarantee normally carrying out of associated user's business.
Description of drawings
Fig. 1 is the structural representation of S1 interface in the existing evolved packet system;
Fig. 2 is the flow chart that obtains the S1 interface user plane address information of gateway in the embodiment of the invention one;
Fig. 3 is the flow chart that obtains the S1 interface user plane address information of gateway in the embodiment of the invention two;
Fig. 4 is the structural representation of Mobility Management Entity in the embodiment of the invention three;
Fig. 5 is the structural representation of evolution base station in the embodiment of the invention four.
Embodiment
In the technical scheme provided by the present invention, set up under the professional situation about being connected with network side at UE for convenient, the business of UE is switched to the destination service gateway from the source gateway, accept the business of UE by the destination service gateway, before switching, the MME that connects by this business, send Indication message to the eNB that is used for the user data between mutual UE and the network-side service gateway, comprise the destination service gateway in this Indication message for belonging to the S1 interface user plane address information that transmission bearer distributed of UE between itself and the eNB.After eNB receives and resolves this Indication message, can know the address information of the S1 interface user plane of destination service gateway, and preserve this address information.Follow-up eNB can utilize the address information of the S1 interface user plane of the destination service gateway of being stored, and sends the uplink user data of this UE.
In addition, for the destination service gateway, if belong on the transmission bearer of UE between eNB and the gateway, the S1 interface user plane address of eNB also is modified, and then eNB can be further sends to the destination service gateway with the renewal S1 interface user plane address of this eNB after the change by MME.If the S1 interface user plane address of eNB is not changed, then the destination service gateway can be known the former S1 interface user plane address information of this eNB from core net inside, as obtain the former S1 interface user plane address information of eNB from the source gateway, send the down user data of UE to eNB.The source gateway will no longer be handled the user data that belongs to this UE, correspondingly load reduction.
For making technical scheme of the present invention and advantage clearer, describe in further detail below in conjunction with accompanying drawing and specific embodiment.
In the embodiments of the invention, if the business of a UE need be switched on the destination service gateway, then can be between MME and the destination service gateway based on existing load creating related procedure, get access to the destination service gateway for belonging to the S1 interface user plane address information that transmission bearer distributed of UE between itself and the eNB by MME from the destination service gateway, relevant flow process the application no longer describes in detail.
Embodiment one:
Ability based on existing MME, MME can detect the loading condition of one or more gateways that this MME is in charge of, in the present embodiment one, the load that MME detects on certain gateway is overweight, and the business of definite one or more UE that this gateway need be handled switches on the lighter relatively destination service gateway of another load.
In the present embodiment one, establishing Indication message is SAE bearing modification request (the SAE BearerModify Request) message that is modified.Wherein, existing SAE bearing modification request message and corresponding SAE bearing modification response message are used for the qos parameter that carried by MME notice eNB change appointment SAE.
Referring to Fig. 2, Fig. 2 is the flow chart that obtains the S1 interface user plane address information of gateway in the embodiments of the invention one, and this flow process can may further comprise the steps:
Step 201, MME select with network side between set up the professional UE that is connected, definite needs switch to the business of this UE on the destination service gateway from the source gateway, then MME sends SAE bearing modification request message, the S1 interface user plane address information of carrying the destination service gateway in this message to the eNB of this UE correspondence.
The S1 interface user plane address information of gateway can comprise transmission network layer address and the corresponding Tunnel Identifier on the S1 interface user plane of this gateway.Referring to table 1, table 1 is portable parameter information tabulation in the SAE bearing modification request message in the present embodiment one, different with parameter information entrained in the existing SAE bearing modification request message is, in the present embodiment one, SAE bearing modification request message removes and carries and UE or the relevant sign of SAE carrying, as MME UE S1 access point identity (MMEUE S1 AP ID), eNB UE S1 access point identity (eNB UE S1 AP ID), outside SAE bearing identification (SAE Bearer ID) and the QoS relevant parameter, improvements are, the portable parameter of SAE bearing modification request message further comprises transmission network layer address (TransportLayer Address) parameter and Tunnel Identifier (GTP-TEID) parameter of SAE carrying, wherein, transmission network layer address (Transport Layer Address) parameter be the transmission network layer address of destination service gateway with value, Tunnel Identifier (GTP-TEID) parameter be the Tunnel Identifier of destination service gateway with value.
Further, if do not carry transport network layer address parameter and Tunnel Identifier parameter in the SAE bearing modification request message, perhaps two parameters are not by assignment, and then this SAE bearing modification request message is identical with existing message function, are used to revise the qos parameter of specifying the SAE carrying.If carry by the transport network layer address parameter of assignment and Tunnel Identifier parameter in the SAE bearing modification request message, represent that then this message also is used to indicate eNB, the S1 interface user plane address information of gateway is modified on the transmission bearer of relevant UE.
| Cell title (IE/Group Name) | Existence (Presence) | Scope (Range) | Cell type and reference value (IE type and reference) | Semantic description (Semantics description) | … | … |
| Type of message (Message Type) | Necessary (M) | 9.2.1.1 | ||||
| MME UE S1 access point identity (MME UE S1 AP ID) | M | 9.2.3.3 | ||||
| ENB UE S1 access point identity (eNB UE S1AP ID) | M | 9.2.3.4 | ||||
| Wait to revise SAE carrying tabulation (SAE Bearer to be Modified List) | M | |||||
| Wait to revise SAE carrying cell (＞SAE Bearer To Be Modified Item IEs) | … | |||||
| ＞＞SAE bearing identification (SAE Bearer ID) | M | 9.2.1.2 | … | |||
| ＞＞SAE bearing bed QoS parameter (SAE Bearer Level QoS Parameters) | M | 9.2.1.15 | … | |||
| ＞＞transmission network layer address (Transport Layer Address) | Optional (O) | 9.2.2.1 | ||||
| ＞＞GTP tunnel sign (GTP-TEID) | O | 9.2.2.2 | Annotate: Serving GW Tunnel Identifier, udp port (note:Serving GW TEID, UDP port) | |||
| … | … | … |
Table one
Step 202, eNB parse relevant information wherein after receiving the SAE bearing modification request message that MME issues, and comprise the S1 interface user plane address information of destination service gateway, preserve this address information.
After eNB parses the entrained information of above-mentioned two parameters in the Indication message, can determine that gateway is modified, the follow-up uplink user data of using transport network layer address parameter and the indicated address information of Tunnel Identifier ginseng to send UE is about to upstream data and sends to the destination service gateway.
Step 203, eNB return SAE bearing modification response message to MME, if eNB has distributed the renewal S1 interface user plane address of this eNB for the transmission bearer that belongs to UE between itself and the destination service gateway, then eNB can pass through this response message, renewal S1 interface user plane address information with this eNB sends to MME.
Referring to table two, table two is the parameter lists that carry in the response message that returns of eNB, be with the entrained parameter list difference in the SAE bearing modification response message that MME returns of eNB in the prior art, increase transmission network layer address (Transport LayerAddress) parameter and corresponding Tunnel Identifier (GTP-TEID) parameter of eNB shown in the table two in the parameter newly, eNB is by these two parameters, and oneself S1 interface user plane address information is sent to the destination service gateway by MME.
| IE/Group Name | Presence | Range | IE type and reference | Semantics description | … | … |
| Message Type | M | 9.2.1.1 | ||||
| MME UE S1 AP ID | M | 9.2.3.3 | ||||
| eNB UE S1 AP ID | M | 9.2.3.4 | ||||
| SAE Bearer Modify List | O | |||||
| ＞SAE Bearer Modify Item IEs | … | |||||
| ＞＞SAE BearerID | M | 9.2.1.2 | … | |||
| ＞＞transmission network layer address (Transport Layer Address) | O | 9.2.2.1 | ||||
| ＞＞GTP tunnel sign (GTP-TEID) | O | 9.2.2.2 | Annotate: eNB Tunnel Identifier, udp port (note:eNB TEID, UDP port) | |||
| SAE Bearer Failed to Modify List | O | |||||
| ＞SAE Bearer Failed To Modify Item IEs | … | |||||
| ＞＞SAE Bearer ID | M | 9.2.1.2 | … | |||
| ＞＞Cause | M | 9.2.1.3 | ||||
| … | … | … |
Table two
After step 204, MME receive the response message that eNB returns, parse the renewal S1 interface user plane address information of eNB wherein, this address information is sent to the destination service gateway.
Step 205, destination service gateway are preserved this address information after receiving the renewal S1 interface user plane address information of the eNB that MME sends, determine the down user data of UE is sent to the indicated position of renewal S1 interface user plane address information of eNB.
ENB can determine whether voluntarily and need distribute new S1 interface user plane address for the SAE carrying that belongs to UE between itself and the destination service gateway, if the governable address resource of eNB is more, then eNB can carry out the address assignment operation, if the governable address resource of eNB is more in short supply, then eNB can not distribute new address.In the present embodiment one, it is more to establish the governable address resource of eNB.
Based on the other side's who is stored separately S1 interface user plane address information, transmit the user data of UE between step 206, destination service gateway and the eNB; ENB also based on kept and the source gateway between the former S1 interface user plane address information of this eNB of arranging, in preset period of time, the down user data that belongs to UE that the reception sources gateway sends to the former S1 interface user plane address information indication position of eNB, if in Preset Time, can receive the data that the source gateway issues, then reclocking, until in certain timing period, the source gateway of not receiving issues downlink data, then stop timing, with the former S1 interface user plane address information deletion of eNB.
In this step 206, the destination service gateway is based on the renewal S1 interface user plane address information of the eNB of storage, send the downlink data of UE to eNB, eNB upgrades S1 interface user plane address information based on it, monitor the data message on the respective communication link, determine which UE the upstream data that receives belongs to, the follow-up UE that is correlated with that sends the data to; Similarly, eNB is based on the S1 interface user plane address information of the destination service gateway of storage, send the upstream data of UE to the destination service gateway, the destination service gateway is based on its S1 interface user plane address information of storage, determine which UE the upstream data that receives belongs to, follow-up can the processing accordingly based on the business of this UE customization.
And, in the present embodiment one, because of eNB has distributed new S1 interface user plane address for the transmission bearer that belongs to UE between itself and the destination service gateway, it is the renewal S1 interface user plane address information of eNB, then for preventing that data that the source gateway sends to the former S1 interface user plane address of eNB are because of transmission delay, after eNB determines that the S1 interface user plane address information of gateway is modified, eNB does not receive the user data that the source gateway issues yet, by the temporary transient former S1 interface user plane address information that on eNB, keeps this eNB, monitor the user data that the source gateway issues on the pairing communication link of this address information, after determining that the user data of source gateway to this address transmission all received by eNB, eNB discharges the former S1 interface user plane address information of this eNB again, thereby guarantees the continuity of customer service.
The flow process of present embodiment one can finish.
Embodiment two:
In the present embodiment two, if set in advance new transmission bearer update inquiry information type, as SAE bearer update request (SAE BEARER UPDATE REQUEST) message, this message is as Indication message, can be exclusively used in MME the S1 interface user plane address information of destination service gateway is sent to eNB.
Referring to Fig. 3, Fig. 3 is the flow chart that obtains the S1 interface user plane address information of gateway in the embodiment of the invention two, and this flow process can may further comprise the steps:
Step 301, MME select with network side between set up the professional UE that is connected, definite needs switch to the business of this UE on the destination service gateway from the source gateway, then MME sends SAE bearer update request message, the S1 interface user plane address information of carrying the destination service gateway in this message to the eNB of UE correspondence.
After step 302, eNB receive the SAE bearer update request message that MME issues, parse relevant information wherein, the S1 interface user plane address information that comprises the destination service gateway, the S1 interface user plane address of determining to belong to gateway on the transmission bearer of UE is modified, and preserves this address information.
Step 303, eNB return the response message that expression receives SAE bearer update request message to MME.
Step 304, destination service gateway get access to the former S1 interface user plane address information of eNB from core net inside, and between the eNB based on the other side's who is stored separately S1 interface user plane address information, the user data of transmission UE.
In the present embodiment two, the specific practice that the destination service gateway obtains the former S1 interface user plane address information of eNB can be initiatively to send the request message that the S1 interface user plane address information of eNB is obtained in requirement to the source gateway by the destination service gateway, comprise the UE sign in this request message, after the source gateway is received this request message, the former S1 interface user plane address information of eNB is sent to the destination service gateway by response message.
In addition, in the practical application, also can in above-mentioned steps 303, its former S1 interface user plane address be sent to MME by response message, send to the destination service gateway by MME by eNB.
ENB do not have for its with the destination service gateway between belong to the new S1 interface user plane address of transmission bearer distribution of UE, therefore, send in the response message of MME at eNB, do not carry relevant information.In the practical application, if eNB has distributed new S1 interface user plane address, then also can adopt the way that is similar to embodiment one, promptly eNB sends to the destination service gateway with its renewal S1 interface user plane address information by MME.And for guaranteeing the continuity of customer service, avoid loss of user data, the former S1 interface user plane address information that also can temporarily keep eNB is to guarantee to receive the user data of source gateway to the UE of the former S1 interface user plane address information indication position of eNB transmission.
The flow process of present embodiment two can finish.
Also need to prove in addition, MME can be after definite business with UE switches to the destination service gateway from the source gateway, or after receiving that expression that eNB returns receives the response message of SAE bearer update request message, the notification source gateway can discharge the former resource that is used to carry the user data of UE between itself and the eNB, as the S1 interface user plane address information of source gateway, former S1 interface user plane address information of eNB or the like.
The foregoing description one and implement two technical schemes that embody applicable to the S1 interface user plane address situation one to one of the transmission bearer of setting up between eNB and the gateway that belongs to UE with the carrying two ends, under this situation, for each transmission bearer, MME sends to eNB with S1 interface user plane first address information of correspondence; The technical scheme that the foregoing description one and embodiment two are embodied is also applicable to the situation of the corresponding a pair of S1 interface user plane of a plurality of transmission bearers that the belong to UE address of setting up between eNB and the gateway, under this situation, for a plurality of transmission bearers, MME only need with a plurality of transmission bearers S1 interface user plane first address information of common corresponding this end of destination service gateway send to eNB and get final product, if eNB is the new S1 interface user plane address that a plurality of transmission bearers have distributed this eNB, then eNB also only need send to the destination service gateway by MME with a S1 interface user plane four-address information of eNB end.For UE, the IP address of UE connecting system can be one, and as IPv4 address or IPv6 address, for can compatible IPv4 network and the system of IPv6 network, the IP address of UE connecting system can be two, comprises IPv4 address and IPv6 address.
Based on the technical scheme that above embodiment embodied, a kind of Mobility Management Entity and evolution base station that the present invention also provides.
Embodiment three:
Referring to Fig. 4, Fig. 4 is the structural representation of Mobility Management Entity in the embodiment of the invention three, and this Mobility Management Entity can comprise:
First sends information process unit, and Indication message is sent to eNB, carries the S1 interface user plane address information of the destination service gateway of accepting the UE business in the described Indication message.
Above-mentioned Mobility Management Entity further can comprise:
First receives information process unit, receive the response message of the described Indication message of described eNB transmission, carry described eNB in this response message and be the renewal S1 interface user plane address information of this eNB that the S1 interface user plane transmission bearer that belongs to described UE distributes, the renewal S1 interface user plane address information of described eNB is sent to described destination service gateway.
This first receive information process unit can eNB also need to change self with the destination service gateway between alternately during the user data of UE during employed S1 interface user plane address, realize its ability, if eNB do not need to change its S1 interface user plane address, then this first receives not Attended Operation of information process unit.
Embodiment four:
Referring to Fig. 5, Fig. 5 is the structural representation of evolution base station in the embodiment of the invention four, and this evolution base station can comprise: second receives information process unit, memory cell;
Second receives information process unit, and the Indication message that the receiving mobility management entity sends parses the S1 interface user plane address information of the destination service gateway in this Indication message;
Memory cell is stored the described second S1 interface user plane address information that receives the described destination service gateway that information process unit parses from described Indication message.
Above-mentioned evolution base station further can comprise: allocation unit and second sends information process unit,
Allocation unit, after the described second reception information process unit is received described Indication message, the S1 interface user plane address of distributing this eNB for the transmission bearer that belongs to described UE, with the former S1 interface user plane address of this eNB on the described transmission bearer, change to the renewal S1 interface user plane address information of described eNB;
Second sends information process unit, returns the response message of described Indication message to described Mobility Management Entity, and the renewal S1 interface user plane address information of the described eNB that allocation unit is distributed sends to described MME by described response message.
As mentioned above, if eNB also needs to change its S1 interface user plane address, then can be with new address, promptly the renewal S1 interface user plane address information of eNB sends to MME by this second transmission information process unit.
Above-mentioned evolution base station further can comprise: timing unit, Data Receiving unit and address discharge control unit;
Described memory cell is further stored the former S1 interface user plane address information of described eNB and the renewal S1 interface user plane address information of eNB;
Timing unit after the described second transmission information process unit sends the renewal S1 interface user plane address information of described eNB, picks up counting;
The Data Receiving unit, S1 interface user plane address information according to described destination service gateway, monitor and receive the user data of the described UE that described destination service gateway issues, and in the preset period of time of timing unit institute timing, according to the former S1 interface user plane address information of described eNB, monitor and receive the user data of the described UE that described source gateway issues according to the former S1 interface user plane address information of described eNB;
The address discharges control unit, and in the preset period of time of timing unit institute timing, the Data Receiving unit does not receive the described user data from the source gateway, then discharges the former S1 interface user plane address information of the described eNB of described cell stores;
Described timing unit is in the preset period of time of institute's timing, if the Data Receiving unit receives the user data of the UE that the source gateway issues, then reclocking, if in the preset period of time of institute's timing, the Data Receiving unit does not receive the user data of the UE that the source gateway issues, then stops timing.
Pass through timing unit, Data Receiving unit and address discharge the compounding practice of these three unit of control unit, receive the S1 interface user plane address information of destination service gateway at eNB after, immediately the former S1 interface user plane address information of this eNB is not discharged, but keep this address information, so that in Preset Time, by the Data Receiving unit still monitor and the source gateway between communication link, it is issued according to the former S1 interface user plane address information of this eNB to see if there is the source gateway, but the user data of the UE that reason eNB such as the reportedly defeated time-delay of factor fail in time to receive, if receive, can restart the timing unit reclocking, the Data Receiving unit continues the communication link between monitoring and the source gateway, if in Preset Time, do not receive data, the user data that then can determine the UE that the source gateway sends based on S1 interface user plane address information is all received by eNB, the address discharges the former S1 interface user plane address information that control unit can discharge this eNB that memory cell stores, thereby can effectively avoid switching because of gateway may cause network side to send to the loss of data phenomenon of UE, guarantee the continuity of UE business.In addition, in the practical application, the address discharges control unit also can directly discharge the former S1 interface user plane address information of this eNB after eNB receives S1 interface user plane address information.
In sum, technical scheme provided by the present invention, the business that belongs to UE in EPS connects, when needing the change gateway, by MME the S1 interface user plane address information of destination service gateway is sent to relevant eNB, make eNB in time know the S1 interface user plane address information of destination service gateway, guarantee normally carrying out of associated user's business.The source gateway correspondingly makes load reduction, and loads on the equilibrium between a plurality of gateways because of no longer handling the user data that belongs to this UE, can promote the optimized realization of systematic function.Further, in the technical scheme disclosed in this invention, get access to the S1 interface user plane address information of destination service gateway at eNB after, eNB in Preset Time, still monitor and the source gateway between communication link, to guarantee that all customer data that the source gateway sends all is received, thereby can avoid guaranteeing the continuity of customer service because of gateway switches the user data loss phenomenon that may cause.
Claims (19)
1, a kind of S1 interface user plane address information acquisition methods of gateway is characterized in that, comprising:
A, Mobility Management Entity MME send to evolution base station eNB with Indication message, carry the S1 interface user plane address information of the destination service gateway of accepting the user equipment (UE) business in the described Indication message;
B, described eNB receive described Indication message, parse the S1 interface user plane address information of described destination service gateway.
2, method according to claim 1 is characterized in that, after the described step B, this method further comprises:
Described destination service gateway obtains the S1 interface user plane address information of eNB on the S1 interface user plane transmission bearer that belongs to described UE between itself and the described eNB.
3, method according to claim 2 is characterized in that, described step B further comprises:
After described eNB receives described Indication message, S1 interface user plane address with this eNB on the described transmission bearer, change to the renewal S1 interface user plane address information of this eNB by the former S1 interface user plane address information of this eNB, with the renewal S1 interface user plane address information of described eNB response message, send to described MME by described Indication message;
The S1 interface user plane address information of obtaining eNB on the described transmission bearer comprises:
The renewal S1 interface user plane address information of the described eNB that described MME will receive sends to described destination service gateway, the renewal S1 interface user plane address information that described destination service gateway receives and stores described eNB.
4, method according to claim 3 is characterized in that, before the described steps A, this method further comprises:
The user data of the described UE that described eNB reception sources gateway issues according to the former S1 interface user plane address information indication position of described eNB;
After the renewal S1 interface user plane address information of described eNB sent to described MME, this method further comprised:
Described eNB is in preset period of time, the former S1 interface user plane address information that keeps described eNB, monitor the user data of the described UE that described source gateway issues to the former S1 interface user plane address information indication position of described eNB, if do not receive the described user data that described source gateway issues in described preset period of time, then described eNB discharges described former S1 interface user plane address information.
5, method according to claim 2 is characterized in that, the S1 interface user plane address information of obtaining eNB on the described transmission bearer comprises:
Described destination service gateway obtains the S1 interface user plane address information of described the above eNB of transmission bearer from core net inside.
6, method according to claim 5 is characterized in that, described destination service gateway obtains described the above eNB of transmission bearer from core net inside S1 interface user plane address information comprises:
Described destination service gateway and described source gateway carry out alternately, when described source gateway obtains the user data of mutual described UE between described eNB and the described source gateway, the former S1 interface user plane address information of this eNB is with the former S1 interface user plane address information of the described eNB S1 interface user plane address information as this eNB on the described transmission bearer.
According to each described method in the claim 1 to 6, it is characterized in that 7, after the described step B, this method further comprises:
Described eNB sends the uplink user data of described UE according to the S1 interface user plane address information of described destination service gateway to described destination service gateway.
According to each described method in the claim 2 to 6, it is characterized in that 8, after described destination service gateway obtained the S1 interface user plane address information of described eNB, this method further comprised:
Described destination service gateway sends the down user data of described UE according to the S1 interface user plane address information of described eNB to described eNB.
9, according to each described method in the claim 1 to 6, it is characterized in that,
The S1 interface user plane address information of described destination service gateway comprises: the transmission network layer address of described destination service gateway and corresponding Tunnel Identifier;
The S1 interface user plane address information of described source gateway comprises: the transmission network layer address of described source gateway and corresponding Tunnel Identifier.
10, method according to claim 9 is characterized in that,
The transmission network layer address of described destination service gateway and corresponding Tunnel Identifier are corresponding one by one with a transmission bearer that belongs to described UE;
Or the transmission network layer address of described destination service gateway and corresponding Tunnel Identifier, corresponding with a plurality of transmission bearers that belong to described UE.
11, method according to claim 10 is characterized in that, described UE has an IPv4 address, and/or, an IPv6 address.
12, according to each described method in the claim 1 to 6, it is characterized in that described Indication message is: wait to revise the System Architecture Evolution SAE carrying change request message that is provided with the Tunnel Identifier parameter of transport network layer address parameter and correspondence in the SAE carrying project information element;
Described MME sends to eNB with described Indication message and comprises:
Described MME sends to described eNB with the SAE carrying change request message of being furnished with the Tunnel Identifier of being furnished with described destination service gateway in the transmission network layer address of described destination service gateway, the described Tunnel Identifier parameter in the described transport network layer address parameter.
13, according to each described method in the claim 1 to 6, it is characterized in that described Indication message is:
The transmission bearer update inquiry information that sets in advance.
According to each described method in the claim 1 to 6, it is characterized in that 14, before the described steps A, this method further comprises:
Described MME and described destination service gateway are mutual, obtain described destination service gateway for its with described eNB between belong to the S1 interface user plane address information of destination service gateway of the S1 interface user plane transmission bearer distribution of UE.
15, a kind of Mobility Management Entity is characterized in that, comprising:
First sends information process unit, and Indication message is sent to eNB, carries the S1 interface user plane address information of the destination service gateway of accepting the UE business in the described Indication message.
16, Mobility Management Entity according to claim 15 is characterized in that, described Mobility Management Entity further comprises:
First receives information process unit, receive the response message of the described Indication message of described eNB transmission, carry described eNB in this response message and be the renewal S1 interface user plane address information of this eNB that the S1 interface user plane transmission bearer that belongs to described UE distributes, the renewal S1 interface user plane address information of described eNB is sent to described destination service gateway.
17, a kind of evolution base station is characterized in that, comprising: second receives information process unit, memory cell;
Second receives information process unit, and the Indication message that the receiving mobility management entity sends parses the S1 interface user plane address information of the destination service gateway in this Indication message;
Memory cell is stored the described second S1 interface user plane address information that receives the described destination service gateway that information process unit parses from described Indication message.
18, evolution base station according to claim 17 is characterized in that, described evolution base station further comprises: allocation unit and second sends information process unit,
Allocation unit, after the described second reception information process unit is received described Indication message, the S1 interface user plane address of distributing this eNB for the transmission bearer that belongs to described UE, with the former S1 interface user plane address of this eNB on the described transmission bearer, change to the renewal S1 interface user plane address information of described eNB;
Second sends information process unit, returns the response message of described Indication message to described Mobility Management Entity, and the renewal S1 interface user plane address information of the described eNB that allocation unit is distributed sends to described MME by described response message.
19, evolution base station according to claim 18 is characterized in that, described evolution base station further comprises: timing unit, Data Receiving unit and address discharge control unit;
Described memory cell is further stored the former S1 interface user plane address information of described eNB and the renewal S1 interface user plane address information of eNB;
Timing unit after the described second transmission information process unit sends the renewal S1 interface user plane address information of described eNB, picks up counting;
The Data Receiving unit, S1 interface user plane address information according to described destination service gateway, monitor and receive the user data of the described UE that described destination service gateway issues, and in the preset period of time of timing unit institute timing, according to the former S1 interface user plane address information of described eNB, monitor and the user data of the described UE that the reception sources gateway issues to the former S1 interface user plane address information indication position of described eNB;
The address discharges control unit, and in the preset period of time of timing unit institute timing, the Data Receiving unit does not receive the described user data from the source gateway, then discharges the former S1 interface user plane address information of the described eNB of described cell stores;
Described timing unit is in the preset period of time of institute's timing, if the Data Receiving unit receives the user data of the UE that the source gateway issues, then reclocking, if in the preset period of time of institute's timing, the Data Receiving unit does not receive the user data of the UE that the source gateway issues, then stops timing.
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