CN105208672A - Channel information management method used for EPS network structure - Google Patents
Channel information management method used for EPS network structure Download PDFInfo
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- CN105208672A CN105208672A CN201410225487.3A CN201410225487A CN105208672A CN 105208672 A CN105208672 A CN 105208672A CN 201410225487 A CN201410225487 A CN 201410225487A CN 105208672 A CN105208672 A CN 105208672A
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Abstract
The invention provides a channel information management method used for an EPS network structure. The method is characterized in that an S-GW and a P-GW are collectively called a gateway GW; an IP/UDP loop back address technology is adopted between an MME and the GW; IP/UDP is adopted for message interaction between the MME and the GW; and the MME and the GW negotiate with each other to determine whether a GTPv2-C message interaction mode or an optimized message interaction mode is adopted for the message interaction, the optimized message interaction mode redefines a channel management message according to negotiation content, and the GTPv2-C message structure is simplified to obtain an simplified optimized message structure. The method can optimize head parts of messages and cells carried by various kinds of messages in a session management flow, so that the message interaction is more efficient, flexible and targeted.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of channel information management method for the EPS network architecture.
Background technology
In 3GPP standard 29.274, TunnellingProtocolforControlplane (GTPv2-C) defines the structure of GTPv2-C message, and the EPS (EvolvedPacketSystem of definition in 3GPP standard 23.401, evolved packet system) core network element MME (MobilityManagementEntity under the network architecture, Mobility Management Entity), SGSN (ServingGPRSsupportNode, Serving GPRS Support Node), S-GW (ServingGateway, gateway), P-GW (PDNGateway, PDN Gateway) between various types of message of using of signaling plane interacting message, comprise path management information (PathManagementMessages), channel management message (TunnelManagementMessages), CSFallback and SRVCC (SingleRadioVoiceCallContinuity) related news, non-3 GPP access related news (Non-3GPPaccessrelatedmessages), MBMS (MultimediaBroadcast/MulticastService) etc.
The GTPv2-C message structure that 3GPP standard 29.274 defines and channel management message are applicable to the EPS framework that 3GPP standard 23.401 defines, under this framework, MME, SGSN, S-GW, P-GW are stand-alone network elements, support the multiple access modules such as GSM, UMTS and LTE, the cell that interacting message relates to is varied.But, when MME, S-GW, P-GW occur with the form of stand-alone network elements, but occur with the form being integrated in a network element, and time the access module supported is only limited to a kind of, if the GTPv2-C message structure still adopting 3GPP standard 29.274 to define and channel management message, then, in the process of interacting message, efficiency is not high, flexibility is not high, and specific aim is not strong.
Summary of the invention
In order to overcome the deficiencies in the prior art, invention proposes a kind of channel information management method for the EPS network architecture newly, the method is applicable to MME, S-GW, P-GW and is integrated in a network element and the access module of EPS network architecture support is only limited to a kind of situation, and the method comprises:
S-GW and P-GW is collectively referred to as gateway GW; IP/UDP loopback address technology is adopted between MME and described GW; IP/UDP is adopted to carry out interacting message between MME and described GW; Determine after MME and described GW consults that described interacting message adopts GTPv2-C interacting message pattern still to optimize interacting message pattern, described optimization interacting message pattern redefines channel management message according to negotiate content, and adopts by simplifying the optimization message structure obtained to GTPv2-C message structure.
Preferably, MME and described GW is held consultation by predefined negotiation message.Further, described negotiation message comprises following field: type of message ID, message-length, interactive mode, function support; Message Type ID field is a fixed value, is negotiation message for identifying current message; Interactive mode field adopts GTPv2-C interacting message pattern still to optimize interacting message pattern for representing; When adopting GTPv2-C interacting message pattern, function supports that field does not exist, and when adopting optimization interacting message pattern, function support field represents the function optimized interacting message pattern and support, comprising channel management function.
Preferably, optimize message structure and comprise following field: type of message ID, message-length, user ID, sequence number, message content; Message Type ID field is for identifying the type of message of current message; Sequence-number field represents the sequence number of current message in an interacting message; Message content field comprises each cell that current message relates to.
Preferably, the channel management message redefined comprises following several types: from MME to GW, direction sets up session request; From GW to MME, direction sets up conversational response; The amendment carrying request in direction from MME to GW; The amendment carrying response in direction from GW to MME; The foundation carrying request in direction from GW to MME; The foundation carrying response in direction from MME to GW; The more new bearer request in direction from GW to MME; The more new bearer response in direction from MME to GW; The deleting bearing request in direction from GW to MME; The deleting bearing response in direction from MME to GW; The release access bearer request in direction from MME to GW; The release access bearer response in direction from GW to MME.
Preferably, the described EPS network architecture only supports LTE access module.
Compare with traditional specification, the method can according to the difference of negotiate content, optimizes the cell that the head of message in session management flow process and various message are carried, makes interacting message more efficient, flexibly and be rich in specific aim.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of the negotiation message of all embodiments of the present invention;
Fig. 2 is the structure chart of the optimization message of all embodiments of the present invention;
Fig. 3 is the performing step figure of the Attach flow process of the embodiment of the present invention one;
Fig. 4 is the performing step figure of the GW activation dedicated bearer flow process of the embodiment of the present invention two;
Fig. 5 is the performing step figure of the GW bearer update flow process of the embodiment of the present invention three;
Fig. 6 is the performing step figure of the GW deleting bearing flow process of the embodiment of the present invention four;
Fig. 7 is the performing step figure of the S1release flow process of the embodiment of the present invention five.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments; It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments of the invention are all only support that the EPS network configuration of LTE access module is background, and MME, S-GW and P-GW are integrated in a network element, S-GW and P-GW are collectively referred to as gateway GW.The flow process related in embodiment please refer to 3GPP standard 23.401, UE (terminal) and eNodeB (evolvedNodeB, evolution NodeB) between message please refer to 3GPP standard 36.331, message between UE and MME please refer to 3GPP standard 24.301, message between eNodeB and MME please refer to 3GPP standard 36.413, message between MME and GW please refer to 3GPP standard 29.274, message between MME and HSS (homesubscriberserver, home subscriber server) please refer to 3GPP standard 29.272.
Between MME and GW of the present invention, comformed information is adopt the GTPv2-C interacting message pattern in 3GPP standard 29.274 or optimize interacting message pattern alternately through consultation.Preferably, in several embodiments of the present invention, negotiation message all adopts structure as shown in Figure 1, and wherein the implication of each field is:
Type of message ID: be a fixed value is negotiation message for identifying current message;
Message-length: represent from next cell, the length of subsequent message body, unit is byte;
Interactive mode: represent that adopting GTPv2-C interacting message pattern still to optimize interacting message pattern carries out alternately;
Function is supported: when adopting GTPv2-C interacting message pattern, this field does not exist; When adopting optimization interacting message pattern, the function that this Field Definition is supported under optimizing interacting message pattern, embodiments of the invention all only support a kind of function of channel management.
Optimize interacting message pattern in the present invention to adopt by simplifying the optimization message structure obtained to GTPv2-C message structure.Preferably, in several embodiments of the present invention, channel management message all adopts structure as shown in Figure 2, and this structure simplifies GTPv2-C message structure, and the implication of each field is:
Type of message ID: for identifying the type of message of current message;
Message-length: represent from next cell, the length of subsequent message body, unit is byte;
User ID: identifying user, field length is determined according to actual user's quantity;
Sequence number: the sequence number of a Signalling exchange use, function is identical with the sequencenumber that 3GPP standard 29.274 defines, and field length suggestion adopts but is not limited to 1 byte;
Message content: optimize interacting message pattern in embodiments of the invention and all only support channel management function, message content in the channel management message then redefined only relates to basic function cell, if optimize interacting message pattern also support other function, then can also define other cell.
Below for the several typical process under LTE network framework, illustrate the management method of channel information.Illustrate the channel management message redefined in each embodiment, but channel management message can be not limited to these specific embodiments.
Embodiment one: as shown in Figure 3, under LTE network framework, the step of the attach flow process of UE is as follows:
(1) MME and GW by IP/UDP by interacting message mode negotiation for optimizing interacting message pattern support channel management function, this negotiation is two-way, can carry out repeatedly, after this this negotiation can also initiated as required again, and the message structure of negotiation message as shown in Figure 1;
(2) UE initiates RRCCONNECTIONSETUP flow process to eNodeB;
(3) eNodeB sends INITIALUEMESSAGE to MME;
(4) if MME cannot obtain the IMSI of UE, MME initiates IDENTITYREQUEST to UE, and UE replys IDENTITYRESPONSE to MME;
(5) if MME thinks that UE needs authentication, MME initiates AUTHENTICATIONREQUEST to UE, and UE replys AUTHENTICATIONRESPONSE to MME; If MME cannot obtain the security algorithm of UE, MME initiates SECURITYMODECOMMAND to UE, and UE replys SECURITYMODECOMPLETE to MME;
(6) if MME does not have the subscription data of UE, MME sends UPDATELOCATIONREQUEST to HSS, and HSS replys UPDATELOCATIONANSWER to MME;
(7) MME initiates CREATESESSIONREQUEST (setting up session request) to GW, GW replys CREATESESSIONRESPONSE (setting up conversational response) to MME, these two message are the channel management message redefined under optimizing interacting message pattern, all as shown in Figure 2, the message content of CREATESESSIONREQUEST comprises following cell to message structure: IMSI, APN, PDNType, PDNAddressAllocation (PAA), APN-AMBR, BearerContextstobecreated; The message content of CREATESESSIONRESPONSE comprises following cell: Cause, PDNAddressAllocation (PAA), APN-AMBR, BearerContextscreated.
(8) MME sends INITIALCONTEXTSETUPREQUEST to eNodeB;
(9) eNodeB sends RRCCONNECTIONRECONFIGURATION to UE, and UE replys RRCCONNECTIONRECONFIGURATIONCOMPLETE to eNodeB;
(10) INITIALCONTEXTSETUPRESPONSE that replys to MME of eNodeB;
(11) UE sends ATTACHCOMPLETE to MME;
(12) MME sends MODIFYBEARERREQUEST (amendment carrying request) to GW, GW replys MODIFYBEARERRESPONSE (amendment carrying response) to MME, these two message are the channel management message redefined under optimizing interacting message pattern, message structure all as shown in Figure 2, the message content of MODIFYBEARERREQUEST comprises following cell: BearerContextstobemodified, BearerContextstoberemoved, the message content of MODIFYBEARERRESPONSE comprises following cell: Cause, BearerContextsmodified.
Embodiment two: as shown in Figure 4, under LTE network framework, GW activates the as follows of dedicated bearer flow process:
(1) with embodiment one step (1);
(2) GW sends CREATEBEARERREQUEST (setting up carrying request) to MME, this message is the channel management message redefined under optimizing interacting message pattern, as shown in Figure 2, its message content comprises following cell to message structure: LinkedBearerIdentity (LBI), ProcedureTransactionId (PTI), BearerContexts.
(3) MME sends E-RABSETUPREQUEST to eNodeB;
(4) eNodeB sends RRCCONNECTIONRECONFIGURATION to UE, and UE replys RRCCONNECTIONRECONFIGURATIONCOMPLETE to eNodeB;
(5) eNodeB sends E-RABSETUPRESPONSE to MME;
(6) UE replys ACTIVATEDEDICATEDEPSBEARERCONTEXTACCET to MME;
(7) MME replys CREATEBEARERRESPONSE (setting up carrying response) to GW, this message is the channel management message redefined under optimizing interacting message pattern, as shown in Figure 2, its message content comprises following cell to message structure: LinkedBearerIdentity (LBI), Cause, BearerContexts.
Embodiment three: as shown in Figure 5, under LTE network framework, the step of GW more new bearer flow process is as follows:
(1) with embodiment one step (1);
(2) GW sends UPDATEBEARERREQUEST (more new bearer request) to MME, this message is the channel management message redefined under optimizing interacting message pattern, as shown in Figure 2, its message content comprises following cell to message structure: BearerContexts, ProcedureTransactionId (PTI).
(3) MME sends E-RABMODIFYREQUEST to eNodeB;
(4) eNodeB sends RRCCONNECTIONRECONFIGURATION to UE, and UE replys RRCCONNECTIONRECONFIGURATIONCOMPLETE to eNodeB;
(5) eNodeB replys E-RABMODIFYRESPONSE to MME;
(6) UE replys MODIFYEPSBEARERCONTEXTACCEPT to MME;
(7) MME sends UPDATEBEARERRESPONSE (more new bearer response) to GW, this message is the channel management message redefined under optimizing interacting message pattern, as shown in Figure 2, its message content comprises following cell to message structure: Cause, BearerContexts.
Embodiment four: as shown in Figure 6, under LTE network framework, the step of GW deleting bearing flow process is as follows:
(1) with embodiment one step (1);
(2) GW sends DELETEBEARERREQUEST (deleting bearing request) to MME, this message is the channel management message redefined under optimizing interacting message pattern, as shown in Figure 2, its message content comprises following cell to message structure: EPSBearerID, ProcedureTransactionId (PTI).
(3) MME sends E-RABRELEASECOMMAND to eNodeB;
(4) eNodeB sends RRCCONNECTIONRECONFIGURATION to UE, and UE replys RRCCONNECTIONRECONFIGURATIONCOMPLETE to eNodeB;
(5) eNodeB replys E-RABRELEASERESPONSE to MME;
(6) UE replys DEACTIVATEEPSBEARERCONTEXTACCEPT to MME;
(7) MME replys DELETEBEARERRESPONSE (deleting bearing response) to GW, this message is the channel management message redefined under optimizing interacting message pattern, as shown in Figure 2, its message content comprises following cell to message structure: Cause, BearerContexts.
Embodiment five: as shown in Figure 7, under LTE network framework, the step of S1release flow process is as follows:
(1) with embodiment one step (1);
(2) if the S1 that eNodeB initiatively discharges UE connects, eNodeB sends UECONTEXTRELEASEREQUEST to MME;
(3) if MME receive eNodeB send UECONTEXTRELEASEREQUEST or MME initiatively discharge UE S1 connection, MME sends RELEASEACCESSBEARERSREQUEST (request of release access bearer) to GW, GW replys RELEASEACCESSBEARERSRESPONSE (response of release access bearer) to MME, these two message are the channel management message redefined under optimizing interacting message pattern, message structure all as shown in Figure 2, the cell that the message content of RELEASEACCESSBEARERSREQUEST comprises is sky, the message content of RELEASEACCESSBEARERSRESPONSE comprises following cell: Cause.
(4) MME sends UECONTEXTRELEASECOMMAND to eNodeB, and eNodeB replys UECONTEXTRELEASECOMPLETE to MME.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. for a channel information management method for the EPS network architecture, it is characterized in that, MME, S-GW and P-GW in the described EPS network architecture are integrated in a network element, and the access module of described EPS network architecture support is only limitted to one, and described method is:
S-GW and P-GW is collectively referred to as gateway GW; IP/UDP loopback address technology is adopted between MME and described GW; IP/UDP is adopted to carry out interacting message between MME and described GW; Determine after MME and described GW consults that described interacting message adopts GTPv2-C interacting message pattern still to optimize interacting message pattern, described optimization interacting message pattern redefines channel management message according to negotiate content, and adopts by simplifying the optimization message structure obtained to GTPv2-C message structure.
2. method according to claim 1, is characterized in that, MME and described GW is held consultation by predefined negotiation message.
3. method according to claim 2, is characterized in that, described negotiation message comprises following field: type of message ID, message-length, interactive mode, function support; Message Type ID field is a fixed value, is negotiation message for identifying current message; Interactive mode field adopts GTPv2-C interacting message pattern still to optimize interacting message pattern for representing; When adopting GTPv2-C interacting message pattern, function supports that field does not exist, and when adopting optimization interacting message pattern, function support field represents the function optimized interacting message pattern and support, comprising channel management function.
4. one of method according to claims 1 to 3, is characterized in that, optimizes message structure and comprises following field: type of message ID, message-length, user ID, sequence number, message content; Message Type ID field is for identifying the type of message of current message; Sequence-number field represents the sequence number of current message in an interacting message; Message content field comprises each cell that current message relates to.
5. method according to claim 4, is characterized in that, the channel management message redefined comprises following several types: from MME to GW, direction sets up session request; From GW to MME, direction sets up conversational response; The amendment carrying request in direction from MME to GW; The amendment carrying response in direction from GW to MME; The foundation carrying request in direction from GW to MME; The foundation carrying response in direction from MME to GW; The more new bearer request in direction from GW to MME; The more new bearer response in direction from MME to GW; The deleting bearing request in direction from GW to MME; The deleting bearing response in direction from MME to GW; The release access bearer request in direction from MME to GW; The release access bearer response in direction from GW to MME.
6. method according to claim 5, is characterized in that, the described EPS network architecture only supports LTE access module.
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