CN105208672B - A kind of channel information management method for the EPS network architecture - Google Patents
A kind of channel information management method for the EPS network architecture Download PDFInfo
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Abstract
The present invention provides a kind of channel information management method for the EPS network architecture, including S-GW and P-GW are collectively referred to as gateway GW；IP/UDP loopback address technology is used between MME and the GW；Interacting message is carried out using IP/UDP between MME and the GW；The MME and GW determines that the interacting message still optimizes interacting message mode using GTPv2-C interacting message mode after negotiating, the optimization interacting message mode redefines channel management message according to content is negotiated, and using the optimization message structure by being simplified to GTPv2-C message structure.This method can optimize the cell that the head of message and various message carry in session management process, so that interacting message is more efficient, flexibly and rich in specific aim.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of channel information management methods for the EPS network architecture.
Background technique
Tunnelling Protocol for Control plane (GTPv2-C) is defined in 3GPP standard 29.274
The structure of GTPv2-C message, and the EPS defined in 3GPP standard 23.401 (Evolved Packet System, evolution
Grouping system) core network element MME (Mobility Management Entity, mobility management entity) under the network architecture,
SGSN (Serving GPRS support Node, Serving GPRS Support Node), S-GW (Serving Gateway, service network
Close), various types of message used in signaling plane interacting message between P-GW (PDN Gateway, PDN Gateway), including road
Diameter manages message (Path Management Messages), channel management message (Tunnel Management
Messages), CSFallback and SRVCC (Single Radio Voice Call Continuity) related news, non-
3GPP accesses related news (Non-3GPP access related messages), MBMS (Multimedia Broadcast/
Multicast Service) etc..
The GTPv2-C message structure and channel management message that 3GPP standard 29.274 defines are suitable for 3GPP standard 23.401
The EPS framework of definition, MME, SGSN, S-GW, P-GW are stand-alone network elements under the framework, support GSM, UMTS and LTE etc. a variety of
Access module, the cell that interacting message is related to are varied.However, when MME, S-GW, P-GW are not in the form of stand-alone network elements
When the access module for occurring, but occurring in the form of being integrated in a network element, and supporting is only limited to a kind of, if still
The GTPv2-C message structure and channel management message defined using 3GPP standard 29.274, then during interacting message,
Inefficient, flexibility is not high, and specific aim is not strong.
Summary of the invention
For overcome the deficiencies in the prior art, invention proposes a kind of new channel information pipe for the EPS network architecture
Reason method, this method are suitable for the access module that MME, S-GW, P-GW are integrated in a network element and the EPS network architecture is supported
It is limited to a kind of situation, this method comprises:
S-GW and P-GW are collectively referred to as gateway GW；IP/UDP loopback address technology is used between MME and the GW；MME with
Interacting message is carried out using IP/UDP between the GW；The MME and GW determines that the interacting message uses GTPv2-C after negotiating
Interacting message mode still optimizes interacting message mode, and the optimization interacting message mode redefines channel according to content is negotiated
Message is managed, and using the optimization message structure by being simplified to GTPv2-C message structure.
Preferably, the MME and GW is held consultation by negotiation message predetermined.Further, the negotiation disappears
Breath includes following field: type of message ID, message-length, interactive mode, function are supported；Message Type ID field is a fixation
Value is negotiation message for identifying current message；Interactive mode field is for indicating using GTPv2-C interacting message mode still
Optimize interacting message mode；When using GTPv2-C interacting message mode, function supports field to be not present, and disappears when using optimization
When ceasing interactive mode, the function that function supports field to indicate that optimization interacting message mode is supported, including channel management function.
Preferably, optimization message structure includes following field: type of message ID, message-length, User ID, sequence number, being disappeared
Cease content；Message Type ID field is used to identify the type of message of current message；Sequence-number field indicates current message primary
Sequence number in interacting message；Message content field includes each cell that current message is related to.
Preferably, the channel management message redefined includes following several types: from MME to GW, direction establishes session
Request；From GW to MME, direction establishes conversational response；From MME to GW, the modification in direction carries request；The direction from GW to MME
Modification carrying response；From GW to MME, the foundation in direction carries request；From MME to GW, the foundation in direction carries response；From GW to
The more new bearer request in the direction MME；The more new bearer response in direction from MME to GW；From GW to MME, the deleting bearing in direction is asked
It asks；The deleting bearing response in direction from MME to GW；The release access bearer request in direction from MME to GW；The direction from GW to MME
Release access bearer response.
Preferably, the EPS network architecture only supports LTE access module.
It is compared with traditional specification, this method can optimize message in session management process according to the difference for negotiating content
Head and the cell that carries of various message so that interacting message is more efficient, flexibly and rich in specific aim.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure chart of the negotiation message of all embodiments of the invention；
Fig. 2 is the structure chart of the optimization message of all embodiments of the invention；
Fig. 3 is the realization block diagram of the Attach process of the embodiment of the present invention one；
Fig. 4 is the realization block diagram of the GW activation dedicated bearer process of the embodiment of the present invention two；
Fig. 5 is the realization block diagram of the GW bearer update process of the embodiment of the present invention three；
Fig. 6 is the realization block diagram of the GW deleting bearing process of the embodiment of the present invention four；
Fig. 7 is the realization block diagram of the S1release process of the embodiment of the present invention five.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments；It should be noted that in the absence of conflict, in the application
Embodiment and embodiment in feature can be combined with each other.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The embodiment of the present invention is all MME, S-GW and P- only to support the EPS network structure of LTE access module as background
GW is integrated in a network element, and S-GW and P-GW are collectively referred to as gateway GW.Process involved in embodiment please refers to 3GPP standard
Message between 23.401, UE (terminals) and eNodeB (evolved Node B, evolution Node B) please refers to 3GPP standard
Message between 36.331, UE and MME please refers to 3GPP standard 24.301, and the message between eNodeB and MME please refers to 3GPP
Standard 36.413, the message between MME and GW please refer to 3GPP standard 29.274, MME and HSS (home subscriber
Server, home subscriber server) between message please refer to 3GPP standard 29.272.
Determine that information exchange is using the GTPv2-C in 3GPP standard 29.274 between MME and GW of the present invention through consultation
Interacting message mode still optimizes interacting message mode.Preferably, negotiation message all uses such as in several embodiments of the present invention
Structure shown in FIG. 1, wherein the meaning of each field are as follows:
Type of message ID: being negotiation message for identifying current message for a fixed value；
Message-length: it indicates since next cell, the length of subsequent message body, unit is byte；
Interactive mode: indicate that still optimizing interacting message mode using GTPv2-C interacting message mode interacts；
Function is supported: when using GTPv2-C interacting message mode, which is not present；When using optimization interacting message
When mode, the function of supporting under field definition optimization interacting message mode, the embodiment of the present invention only supports channel management
A kind of function.
Optimization interacting message mode is used in the present invention is disappeared by the optimization simplified to GTPv2-C message structure
Cease structure.Preferably, channel management message all uses structure as shown in Figure 2 in several embodiments of the present invention, the structure pair
GTPv2-C message structure is simplified, the meaning of each field are as follows:
Type of message ID: for identifying the type of message of current message；
Message-length: it indicates since next cell, the length of subsequent message body, unit is byte；
User ID: identity user, field length are determined according to actual user's quantity；
Sequence number: the sequence that the sequence number that a Signalling exchange uses, function and 3GPP standard 29.274 define
Number is identical, and field length is proposed with but is not limited to 1 byte；
Message content: optimize interacting message mode in the embodiment of the present invention and only support channel management function, then again
Message content in the channel management message of definition only relates to basic function cell, if optimization interacting message mode also supports it
Its function can also then define other cells.
Below by taking several typical process under LTE network framework as an example, the management method of channel information is illustrated.It is each
The channel management message redefined is illustrated in embodiment, but channel management message can be not limited to these specific embodiments.
Embodiment one: as shown in figure 3, as follows the step of the attach process of UE under LTE network framework:
(1) interacting message mode negotiation is optimization interacting message mode by IP/UDP and supports tube channel by MME and GW
Manage function, the negotiation be it is two-way, can carry out repeatedly, which can also initiate again as needed hereafter, negotiate to disappear
The message structure of breath is as shown in Figure 1；
(2) UE initiates RRC CONNECTION SETUP process to eNodeB；
(3) eNodeB sends INITIAL UE MESSAGE to MME；
(4) if MME can not obtain the IMSI of UE, MME initiates IDENTITY REQUEST to UE, and UE is replied to MME
IDENTITY RESPONSE；
(5) if MME thinks that UE needs to authenticate, MME initiates AUTHENTICATION REQUEST to UE, and UE is returned to MME
Multiple AUTHENTICATION RESPONSE；If MME can not obtain the security algorithm of UE, MME initiates SECURITY to UE
MODE COMMAND, UE reply SECURITY MODE COMPLETE to MME；
(6) if MME does not have a subscription data of UE, MME to HSS send UPDATE LOCATION REQUEST, HSS to
MME replys UPDATE LOCATION ANSWER；
(7) MME initiates CREATE SESSION REQUEST (establishing session request) to GW, and GW replys CREATE to MME
SESSION RESPONSE (establishes conversational response), the two message are to optimize the tube channel redefined under interacting message mode
Message is managed, message structure is as shown in Fig. 2, the message content of CREATE SESSION REQUEST includes following cell: IMSI,
APN、PDN Type、PDN Address Allocation(PAA)、APN-AMBR、Bearer Contexts to be
created；The message content of CREATE SESSION RESPONSE includes following cell: Cause, PDN Address
Allocation(PAA)、APN-AMBR、Bearer Contexts created。
(8) MME sends INITIAL CONTEXT SETUP REQUEST to eNodeB；
(9) eNodeB sends RRC CONNECTION RECONFIGURATION, UE to UE and replys RRC to eNodeB
CONNECTION RECONFIGURATION COMPLETE；
(10) the INITIAL CONTEXT SETUP RESPONSE that eNodeB is replied to MME；
(11) UE sends ATTACH COMPLETE to MME；
(12) MME sends MODIFY BEARER REQUEST (modification carrying request) to GW, and GW replys MODIFY to MME
BEARER RESPONSE (modification carrying response), the two message are to optimize the tube channel redefined under interacting message mode
Message is managed, message structure is as shown in Fig. 2, the message content of MODIFY BEARER REQUEST includes following cell: Bearer
Contexts to be modified, Bearer Contexts to be removed, MODIFY BEARER RESPONSE
Message content include following cell: Cause, Bearer Contexts modified.
Embodiment two: as shown in figure 4, GW activates the as follows of dedicated bearer process under LTE network framework:
(1) with one step of embodiment (1)；
(2) GW is sent CREATE BEARER REQUEST (establishing carrying request) to MME, which is that optimization message is handed over
The channel management message redefined under mutual mode, message structure is as shown in Fig. 2, its message content includes following cell:
Linked Bearer Identity(LBI)、Procedure Transaction Id(PTI)、Bearer Contexts。
(3) MME sends E-RAB SETUP REQUEST to eNodeB；
(4) eNodeB sends RRC CONNECTION RECONFIGURATION, UE to UE and replys RRC to eNodeB
CONNECTION RECONFIGURATION COMPLETE；
(5) eNodeB sends E-RAB SETUP RESPONSE to MME；
(6) UE replys ACTIVATE DEDICATED EPS BEARER CONTEXT ACCET to MME；
(7) MME is replied CREATE BEARER RESPONSE (establishing carrying response) to GW, which is that optimization message is handed over
The channel management message redefined under mutual mode, message structure is as shown in Fig. 2, its message content includes following cell:
Linked Bearer Identity(LBI)、Cause、Bearer Contexts。
Embodiment three: as shown in figure 5, as follows the step of GW more new bearer process under LTE network framework:
(1) with one step of embodiment (1)；
(2) GW sends UPDATE BEARER REQUEST (more new bearer request) to MME, which is that optimization message is handed over
The channel management message redefined under mutual mode, message structure is as shown in Fig. 2, its message content includes following cell:
Bearer Contexts、Procedure Transaction Id(PTI)。
(3) MME sends E-RAB MODIFY REQUEST to eNodeB；
(4) eNodeB sends RRC CONNECTION RECONFIGURATION, UE to UE and replys RRC to eNodeB
CONNECTION RECONFIGURATION COMPLETE；
(5) eNodeB replys E-RAB MODIFY RESPONSE to MME；
(6) UE replys MODIFY EPS BEARER CONTEXT ACCEPT to MME；
(7) MME sends UPDATE BEARER RESPONSE (more new bearer response) to GW, which is that optimization message is handed over
The channel management message redefined under mutual mode, message structure is as shown in Fig. 2, its message content includes following cell:
Cause、Bearer Contexts。
Example IV: as shown in fig. 6, as follows the step of GW deleting bearing process under LTE network framework:
(1) with one step of embodiment (1)；
(2) GW sends DELETE BEARER REQUEST (deleting bearing request) to MME, which is that optimization message is handed over
The channel management message redefined under mutual mode, message structure is as shown in Fig. 2, its message content includes following cell: EPS
Bearer ID、Procedure Transaction Id(PTI)。
(3) MME sends E-RAB RELEASE COMMAND to eNodeB；
(4) eNodeB sends RRC CONNECTION RECONFIGURATION, UE to UE and replys RRC to eNodeB
CONNECTION RECONFIGURATION COMPLETE；
(5) eNodeB replys E-RAB RELEASE RESPONSE to MME；
(6) UE replys DEACTIVATE EPS BEARER CONTEXT ACCEPT to MME；
(7) MME replys DELETE BEARER RESPONSE (deleting bearing response) to GW, which is that optimization message is handed over
The channel management message redefined under mutual mode, message structure is as shown in Fig. 2, its message content includes following cell:
Cause、Bearer Contexts。
Embodiment five: as shown in fig. 7, as follows the step of S1release process under LTE network framework:
(1) with one step of embodiment (1)；
(2) if eNodeB actively discharges the S1 connection of UE, eNodeB sends UE CONTEXT RELEASE to MME
REQUEST；
(3) if UE CONTEXT RELEASE REQUEST or MME that MME receives eNodeB transmission actively discharge UE
S1 connection, MME sends RELEASE ACCESS BEARERS REQUEST (release access bearer request) to GW, and GW is to MME
RELEASE ACCESS BEARERS RESPONSE (response of release access bearer) is replied, the two message are that optimization message is handed over
The channel management message redefined under mutual mode, message structure is as shown in Fig. 2, RELEASE ACCESS BEARERS
The cell that the message content of REQUEST includes is sky, and the message content of RELEASE ACCESS BEARERS RESPONSE includes
Following cell: Cause.
(4) MME sends UE CONTEXT RELEASE COMMAND, eNodeB to eNodeB and replys UE to MME
CONTEXT RELEASE COMPLETE。
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (5)
1. a kind of channel information management method for the EPS network architecture, which is characterized in that in the EPS network architecture
MME, S-GW and P-GW are integrated in a network element, and the access module that the EPS network architecture is supported is only limitted to one kind, the method
Are as follows:
S-GW and P-GW are collectively referred to as gateway GW；IP/UDP loopback address technology is used between MME and the GW；MME with it is described
Interacting message is carried out using IP/UDP between GW；The MME and GW determines that the interacting message uses GTPv2-C message after negotiating
Interactive mode still optimizes interacting message mode, and the optimization interacting message mode redefines channel management according to content is negotiated
Message, and using the optimization message structure by being simplified to GTPv2-C message structure；
The optimization message structure includes following field: type of message ID, message-length, User ID, sequence number, message content；
Message Type ID field is used to identify the type of message of current message；Sequence-number field indicates current message in an interacting message
In sequence number；Message content field includes each cell that current message is related to.
2. the method according to claim 1, wherein MME and the GW by negotiation message predetermined into
Row is negotiated.
3. according to the method described in claim 2, it is characterized in that, the negotiation message includes following field: type of message ID,
Message-length, interactive mode, function are supported；Message Type ID field is a fixed value, is negotiated for identifying current message
Message；Interactive mode field still optimizes interacting message mode using GTPv2-C interacting message mode for indicating；Work as use
When GTPv2-C interacting message mode, function supports field to be not present, and when using interacting message mode is optimized, function supports word
Segment table shows the function that optimization interacting message mode is supported, including channel management function.
4. method according to any one of claims 1 to 3, which is characterized in that the channel management message package redefined
Include following several types: from MME to GW, direction establishes session request；From GW to MME, direction establishes conversational response；From MME
Modification to the direction GW carries request；From GW to MME, the modification in direction carries response；From GW to MME, the foundation carrying in direction is asked
It asks；From MME to GW, the foundation in direction carries response；The more new bearer request in direction from GW to MME；From MME to GW, direction is more
New bearer response；The deleting bearing request in direction from GW to MME；The deleting bearing response in direction from MME to GW；From MME to GW
The release access bearer in direction is requested；The release access bearer response in direction from GW to MME.
5. according to the method described in claim 4, it is characterized in that, the EPS network architecture only supports LTE access module.
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