CN103428801B - A kind of method and apparatus of realizing route management - Google Patents
A kind of method and apparatus of realizing route management Download PDFInfo
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Abstract
The invention discloses a kind of method and apparatus of realizing route management, when the local routing failure that terminal is embodied with direct tunnel, notify Correspondent Node wireless side network element/gateway release direct tunnel information of terminal.As it can be seen that the technology of realizing route management of the present invention guarantees that Correspondent Node is able to carry out effective path management, realizing route release when the local routing failure embodied with direct tunnel.
Description
Technical field
The present invention relates to the communications fields, and in particular to a kind of method and apparatus of realizing route management.
Background technique
In order to keep 3-G (Generation Three mobile communication system) in the competitiveness of the communications field, for user provide rate faster, time delay
Lower and more personalized mobile communication service, meanwhile, reduce the operation cost of operator, third generation affiliate meter
It draws (3rd Generation Partnership Project, 3GPP) standard working group and is committed to evolved packet system
The research of (Evolved Packet System, EPS).Entire EPS system is divided into wireless access network and core net two parts.?
In core net, home subscriber server (Home Subscriber Server, HSS), mobility management entity are contained
(Mobility Management Entity, MME), Serving GPRS Support Node (Serving GPRS Support Node,
SGSN), policy charging rule function (Policy and Charging Rule Function, PCRF), gateway
(Serving Gateway, S-GW), packet data gateway (PDN Gateway, P-GW) and packet data network (Packet
Data Network, PDN).Functions are described below in detail:
Home subscriber server is the permanent storage place of user contracting data, positioned at the home network of user's signing.
Mobility management entity is storage place of the user contracting data in current network, is responsible for the non-of terminal to network
Tracking and paging under access layer signaling management, the safety verification function of terminal, the mobile management of terminal, user's idle mode
Management function and bearer management.
SGSN is that global system for mobile communications (Global System for Mobile Communications, GSM) increases
Strong data transfer rate GSM evolution (Enhanced Data Rate for GSM Evolution, EDGE) wireless access network (GSM EDGE
Radio Access Network, GERAN) and Universal Mobile Communication System (Universal Mobile
Telecommunications System, UMTS) land radio access web (UMTS Terrestrial Radio Access
Network, UTRAN) user access core network network business support point, it is functionally similar with mobility management entity, be responsible for use
The functions such as location updating, paging management and the bearer management at family.
Gateway is gateway of the core net to wireless system, and it is empty to user plane bearer, the terminal of core net to be responsible for terminal
Function, Lawful Interception and the packet routing and forwarding capability of data buffer storage, network side initiating business request under not busy mode；
Gateway is responsible for the case where counting user terminal is using wireless network, and generates the ticket that terminal uses wireless network, sends meter to
Take gateway.
Packet data gateway, is the gateway of evolution system He the exterior packet data network, it is connected to internet
On packet data network, be responsible for Internet protocol (Internet Protocol, IP) address distribution of terminal, billing function,
It is grouped the functions such as packet filtering and policy control.
Packet data network, is the IP operation network of operator, which is provided by the core net of operator for user
IP service.
Policy charging rule functional entity is to be responsible for providing charging control, online diameter credit control, thresholding control in evolution system
The server of system and service quality (Quality of Service, QoS) strategy aspect rule.
Wireless access network is by evolution base station (Evolved NodeB, eNB) and 3G radio network controller (Radio
Network Controllor, RNC) composition, it is mainly responsible for the transmitting-receiving of wireless signal, by air interface and terminal contact,
Manage radio resource, scheduling of resource and the access control of air interface.
When user carries out business access, terminal can initiate PDN (Packet Data Network, packet data network)
Establishment process is connected, MME/SGSN selects gateway and gateway according to the corresponding APN of the used business of user that terminal reports,
It establishes from the user face channel between terminal-wireless base station-core network gateway (gateway and access gateway).Fig. 1 show existing
There is user terminal in technology to receive/send the user plane path of data.
From figure 1 it appears that all data of user terminal are required by access gateway (also referred to as anchor point net
Close), even if two user's physical locations being in communication with each other are very close to the data communication between them is also required to by accessing net
It closes.This data transfer mode increases the time delay of user data transmission and occupies the transfer resource of core net, reduces core
The resource utilization of net reduces the usage experience of user, while data are focused in anchor gateway, also increase anchor point
The load of gateway and transmission network.And all data packets have to pass through access gateway this point, and cause access gateway
Bottleneck problem is prominent.Especially after D2D (Device to Device, terminal-to-terminal service) business widespread development, routing is not
Optimization and bottleneck problem can be highlighted more.In response to this, it has been suggested that mutual between Lai Shixian user using direct tunnel method
Data path optimization when logical.Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d are shown using the number after routing optimality scheme when user's intercommunication
According to path.As shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d, after routing optimality scheme, communication between two users, Ke Yitong
The direct tunnel intercommunication between S-GW is crossed, the direct tunnel intercommunication between eNB can also be passed through.
But when user occurs mobile, since the eNB/S-GW of its access can be modified, then being established before mobile
Direct tunnel whether can also continue to exist, it is desired nonetheless to rebuild, update or discharge, i.e., how to realize the pipe to the path
Reason, there are no corresponding solutions in the prior art.As it can be seen that when the local routing failure embodied with direct tunnel, communication
Opposite end (such as eNB/S-GW) will not know the situation, therefore can not carry out effective path management.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of method and apparatus of realizing route management, when with straight
When the local routing failure that logical tunnel embodies, guarantee that Correspondent Node is able to carry out effective path management, realizing route release.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of method of realizing route management, this method comprises:
When the local routing failure that terminal is embodied with direct tunnel, Correspondent Node wireless side network element/clothes of terminal are notified
Business gateway discharges direct tunnel information.
The local routing failure that the terminal is embodied with direct tunnel, comprising: mobility event occurs for terminal, causes wireless
Direct tunnel between side network element/gateway needs to discharge；
The mobility event includes S1 release Release, service request SR, tracing section updating TAU, switching HO.
Correspondent Node wireless side network element/gateway of terminal is notified to discharge direct tunnel information, comprising:
Between gateway confirmation wireless side network element/gateway between direct tunnel need to discharge, gateway is logical
Know Correspondent Node wireless side network element/gateway release direct tunnel information.
Notify terminal Correspondent Node wireless side network element/gateway release direct tunnel information when, to Correspondent Node without
Line side network element/gateway sends direct tunnel Indication of Losing Efficacy, wherein the identification information of the direct tunnel comprising failure.
Notify that the mode for discharging direct tunnel information includes:
Directly transmit the direct tunnel Indication of Losing Efficacy；Or,
The direct tunnel Indication of Losing Efficacy is contained in data packet and is sent.
The path of the direct tunnel Indication of Losing Efficacy are as follows:
The wireless side network element or gateway of the Correspondent Node are notified by the packet data gateway of core net；Or,
Between wireless side network element or between gateway, mobility management entity transfer is directly notified or passed through.
Other than mobility event S1 Release, in the Correspondent Node wireless side net of notice terminal
Before member/gateway release direct tunnel information, further determine whether to can establish the direct tunnel between wireless side network element.
When judging whether to can establish the direct tunnel between wireless side network element,
For using the scene of the direct tunnel between wireless side network element between terminal,
It can be with if judging result is, it is determined that need to initiate the establishment process of direct tunnel between wireless side network element；
It cannot if judging result is, it is determined that need to trigger the foundation of gateway direct tunnel, while needing to discharge
Related straight-through tunnel information on Correspondent Node wireless side network element；
For using the scene of the direct tunnel between gateway between terminal,
If judging result is can be to determine that the correlation for needing to discharge on gateway leads directly to tunnel information, while initiating nothing
The establishment process of direct tunnel between line side network element；
It cannot if judging result is, it is determined that the foundation for needing to trigger direct tunnel between gateway, in direct tunnel
Related straight-through tunnel information on Correspondent Node gateway is updated in establishment process.
The Correspondent Node wireless side network element/gateway deletes the straight-through tunnel to be discharged also according to the notice received
Road information.
A kind of device of realizing route management, the device are used for:
When the local routing failure that terminal is embodied with direct tunnel, Correspondent Node wireless side network element/clothes of terminal are notified
Business gateway discharges direct tunnel information.
The local routing failure that the terminal is embodied with direct tunnel, comprising: mobility event occurs for terminal, causes wireless
Direct tunnel between side network element/gateway needs to discharge；
The mobility event includes S1 Release, SR, TAU, HO.
The device is gateway, discharges direct tunnel in Correspondent Node wireless side network element/gateway of notice terminal
When information, it is used for:
Confirmation wireless side network element between/gateway between direct tunnel need to discharge, notify Correspondent Node wireless side
Network element/gateway discharges direct tunnel information.
The device is gateway, discharges direct tunnel in Correspondent Node wireless side network element/gateway of notice terminal
When information, for sending direct tunnel Indication of Losing Efficacy to Correspondent Node wireless side network element/gateway, wherein including the straight of failure
The identification information in logical tunnel.
Notify that the mode for discharging direct tunnel information includes:
Directly transmit the direct tunnel Indication of Losing Efficacy；Or,
The direct tunnel Indication of Losing Efficacy is contained in data packet and is sent.
The path of the direct tunnel Indication of Losing Efficacy are as follows:
The wireless side network element or gateway of the Correspondent Node are notified by the packet data gateway of core net；Or,
Between wireless side network element or between gateway, mobility management entity transfer is directly notified or passed through.
The device is gateway；Other than mobility event S1 Release, in notice terminal
Before Correspondent Node wireless side network element/gateway release direct tunnel information, it is also used to judge whether to can establish wireless side
Direct tunnel between network element.
The gateway is used for when judging whether to can establish the direct tunnel between wireless side network element:
For using the scene of the direct tunnel between wireless side network element between terminal,
It can be with if judging result is, it is determined that need to initiate the establishment process of direct tunnel between wireless side network element；
It cannot if judging result is, it is determined that need to trigger the foundation of gateway direct tunnel, while needing to discharge
Related straight-through tunnel information on Correspondent Node wireless side network element；
For using the scene of the direct tunnel between gateway between terminal,
If judging result is can be to determine that the correlation for needing to discharge on gateway leads directly to tunnel information, while initiating nothing
The establishment process of direct tunnel between line side network element；
It cannot if judging result is, it is determined that the foundation for needing to trigger direct tunnel between gateway, in direct tunnel
Related straight-through tunnel information on Correspondent Node gateway is updated in establishment process.
The Correspondent Node wireless side network element/gateway deletes the straight-through tunnel to be discharged also according to the notice received
Road information.
The method of the present invention and device notify the communication of terminal when the local routing failure that terminal is embodied with direct tunnel
Opposite end wireless side network element/gateway discharges direct tunnel information.As it can be seen that the technology of realizing route management of the present invention, when with straight
When the local routing failure that logical tunnel embodies, guarantee that Correspondent Node is able to carry out effective path management, realizing route release.
Detailed description of the invention
Fig. 1 is the data path schematic diagram of the cordless communication network of the prior art；
Fig. 2 a is in the prior art using the data path schematic diagram one of the cordless communication network after routing optimality scheme；
Fig. 2 b is in the prior art using the data path schematic diagram two of the cordless communication network after routing optimality scheme；
Fig. 2 c is in the prior art using the data path schematic diagram three of the cordless communication network after routing optimality scheme；
Fig. 2 d is in the prior art using the data path schematic diagram four of the cordless communication network after routing optimality scheme；
Fig. 3 is the path management flow chart of the embodiment of the present invention one；
Fig. 4 is the path management flow chart of the embodiment of the present invention two；
Fig. 5 is the path management flow chart of the embodiment of the present invention three；
Fig. 6 a and Fig. 6 b are the path management flow chart of the embodiment of the present invention four；
Fig. 7 is the path management flow chart of the embodiment of the present invention five；
Fig. 8 a and Fig. 8 b are the path management flow chart of the embodiment of the present invention six；
Fig. 9 is the path management general flow chart of the embodiment of the present invention.
Specific embodiment
When the local routing failure embodied with direct tunnel, in order to guarantee that Correspondent Node is able to carry out effective path tube
Reason, realizing route release, can notify Correspondent Node eNB/S-GW to discharge direct tunnel information.
Such as:
When mobility event occurs for terminal, (such as S1 discharges (S1 Release), service request (SR), tracing section updating
(TAU), switch (HO)), S-GW confirmation eNB between/S-GW between direct tunnel need to discharge, S-GW notify Correspondent Node
ENB/S-GW discharges direct tunnel information.
To make the object, technical solutions and advantages of the present invention clearer, in the following with reference to the drawings and specific embodiments to this
It invents the technical solution to be described in further detail, so that those skilled in the art can better understand the present invention simultaneously
It can be practiced, but illustrated embodiment is not as a limitation of the invention.
Following embodiment of the invention is by taking E-UTRAN system as an example, wireless side network element/service of description Correspondent Node access
Gateway obtains direct tunnel (optimization routing) release instruction, and discharges the related procedure of direct tunnel.All implementations of the invention
Example is suitable for UTRAN/GERAN access network and home base station system.If it is access UTRAN system, then access gateway
For GGSN, gateway SGSN, wireless side network element is RNC；If it is access E-UTRAN system, then access gateway is P-GW,
Gateway is S-GW, and wireless side network element is eNB；If it is access home base station system, access gateway and gateway and E-
Identical in UTRAN and UTRAN, wireless side network element is H (e) NB or H (e) NB GW.
In the present invention, concise in order to describe, two nouns of terminal and Correspondent Node are used, wherein terminal refers to
One end Correspondent Node for initiating communication perhaps business refers to be communicated or the other end of business with terminal.In the present invention
UE (user equipment) 1 refers to terminal, and UE2 refers to Correspondent Node.ENB1 is the eNB of UE1 access, and P-GW1 is the P- of UE1 access
GW, MME1 are the MME of UE1 access, and eNB3 is the eNB newly accessed after UE1 is moved, and P-GW3 is newly to connect after UE1 is moved
The P-GW entered, MME3 are the MME newly accessed after UE1 is moved.ENB2 is the eNB of Correspondent Node UE2 access, and P-GW2 is logical
Believe that the P-GW of opposite end UE2 access, MME2 are the MME of Correspondent Node access.S-GW is what UE1 and Correspondent Node UE2 was accessed jointly
S-GW。
In the present invention, in order to realize the optimization of routing, the straight-through tunnel between wireless side network element/gateway is introduced
Road, thus can also the direct tunnel between wireless side network element/gateway be referred to as local routing.
In the present invention, since terminal and Correspondent Node all access identical S-GW, service involved in the present invention
Direct tunnel between gateway, by the data of identical gateway direct forwarding terminal and Correspondent Node.
In the present invention, direct tunnel identification information, which refers to, can be used to identify the information of direct tunnel, effect be in order to
Allow access gateway/gateway/wireless side network element according to content recognition, confirmation direct tunnel is specifically identified, specifically extremely
Include less one of following content, but be not limited only to following the description: the IP address of terminal, the IMSI of terminal, Correspondent Node EPS
Bear ID (EPS load identification), the RAB ID (radio bearer identification) of Correspondent Node, Correspondent Node special carrying label,
The TEID of the wireless side network element of Correspondent Node access and user face address.
The direct tunnel identification information that different network elements can be used may be different, specifically, in implementation of the invention
In example:
1) the direct tunnel identification information that gateway and mobility management entity use is direct tunnel identification information 1.
One of following content is specifically included at least, but is not limited only to following the description: the IP address of terminal, the IMSI of terminal, Correspondent Node
EPS bear ID (EPS load identification), the special carrying label of Correspondent Node, Correspondent Node access wireless side network element
TEID and user face address.
2) the direct tunnel identification information used between mobility management entity and wireless side network element is direct tunnel mark
Information 2.One of following content is specifically included at least, but is not limited only to following the description: the IMSI, logical of the IP address of terminal, terminal
The wireless side net that special carrying label, the Correspondent Node of the RAB ID (radio bearer identification), Correspondent Node that believe opposite end access
The TEID of member and user face address.
3) the direct tunnel identification information used between gateway and wireless side network element is direct tunnel identification information 3.
One of following content is specifically included at least, but is not limited only to following the description: the IP address of terminal, the IMSI of terminal, Correspondent Node
Special carrying label, Correspondent Node access wireless side network element TEID and user face address.
Referring to Fig. 3, embodiment illustrated in fig. 3 is suitable for E-UTRAN access system, describes logical when terminal and Correspondent Node
When between letter/business using the direct tunnel between wireless side network element or gateway, the process flow of S1Release.Fig. 3 institute
Show process the following steps are included:
Step 301, if eNB1 detects the signaling connection and radio bearer for needing to discharge UE1, eNB1 sends UE context
Request message is discharged to MME1, carries release cause in message.When initiating S1 Release process by eNB, this is needed to be implemented
Step.If MME initiates S1 Release process, then directly since step 302.
Step 302, MME1 sends release access bearer request message to S-GW, the carrying of request release UE1.
Step 303, the relevant information for the direct tunnel that S-GW release is locally stored, pair including eNB mark and IP address
It should be related to.
For using the scene of the direct tunnel between eNB between UE1 and UE2, step 304-311 is executed.
Step 304, S-GW discharges information relevant to eNB, and returns to release access bearer response message to MME1.
Step 305, MME1 sends UE context release command message to eNB1, carries release cause in message.
Step 306, if the radio bearer of UE1 discharges not yet, eNB1 notifies UE1 releasing wireless loading, and deletes UE1
Context.
Step 307, S-GW sends direct tunnel Indication of Losing Efficacy message to the MME2 of Correspondent Node, and straight-through tunnel is carried in message
Road identification information 1.
The purpose of the message is that notice MME2 deletes direct tunnel relevant information, which can be by newly-increased message come real
It is existing, can also be realized by modifying existing message, the title of message can be other titles, as long as the message realize it is above-mentioned
Purpose.
S-GW needs to find all Correspondent Nodes with direct tunnel of UE1, and notifies the eNB of all Correspondent Nodes
Discharge direct tunnel.Therefore this step may include multiple messages.For being in the Correspondent Node of the same MME, these message
It can be merged into a piece of news, reexamine whether these Correspondent Nodes belong to the same eNB at MME, it is same for being not belonging to
A eNB's then individually sends message.Or S-GW uses same for the Correspondent Node in the same MME, the same eNB
Message is sent.
Step 308, MME2 sends direct tunnel Indication of Losing Efficacy message to the eNB2 of Correspondent Node, and straight-through tunnel is carried in message
Road identification information 3.If direct tunnel identification information 1 in step 307 using the EPS bear ID of Correspondent Node,
MME needs to be revised as the RAB ID of corresponding Correspondent Node.
The purpose of the message is that notice eNB2 deletes direct tunnel relevant information, which can be by newly-increased message come real
It is existing, can also be realized by modifying existing message, the title of message can be other titles, as long as the message realize it is above-mentioned
Purpose.
Step 309, eNB2 finds the direct tunnel information of eNB maintenance according to direct tunnel identification information 3, and deletes the letter
Breath.Optional simultaneously, eNB2 can delete the TFT information of the UE2 on eNB2.
Step 310-311, eNB2 send direct tunnel failure confirmation message, and message is transmitted to S-GW by MME2.
In the present embodiment, step 307-311 can be executed parallel with step 304.
For using the scene of the direct tunnel between gateway between UE1 and UE2, step 304a-307a is executed.
Step 304a-306a, with step 304-306.
Step 307a, S-GW delete the direct tunnel information of local maintenance.Optional simultaneously, S-GW can be deleted on S-GW
UE2 TFT information.Optionally, this step can not execute, that is, the direct tunnel information on S-GW is in S1 Release mistake
It can not be discharged in journey.
In the present embodiment, S-GW notifies that eNB2 is carried out by control plane message, that is, needs through MME2 transfer control
Face message processed.It there are also a kind of mode is carried out by user face, in the manner,
Step 307, S-GW constructs special data packet, (carries direct tunnel Indication of Losing Efficacy message in the data packet
Direct tunnel identification information 3) it is configured to the payload of packet, the eNB2 of Correspondent Node is sent to by data surface.
Step 308, after eNB2 receives the data packet, payload (direct tunnel Indication of Losing Efficacy message) is taken out from packet, and
The direct tunnel information of eNB2 maintenance is found according to direct tunnel identification information 3, and deletes the information.It is optional simultaneously, eNB2
The TFT information of the UE2 on eNB2 can be deleted.
Step 309, eNB2 constructs special data packet, is configured to direct tunnel failure confirmation message in the data packet
The payload of packet, and S-GW is sent to by data surface.
When using the direct tunnel between gateway between terminal and the communication/traffic of Correspondent Node, if S1Release
When information in process on S-GW about direct tunnel remains unchanged, when terminal initiates SR process or TAU process, due to user
It may be moved in Idle state, S-GW needs to rejudge whether direct tunnel can continue to exist, to guarantee on S-GW
The correctness of direct tunnel information.
Referring to fig. 4, embodiment illustrated in fig. 4 is suitable for E-UTRAN access system, describes logical when terminal and Correspondent Node
Using the direct tunnel between gateway between letter/business, and gateway does not discharge directly in S1 Release process
When logical tunnel information, the process flow of SR.Process shown in Fig. 4 the following steps are included:
Step 401-402, when terminal has signaling or data to send, the wireless side network element eNB3 newly accessed to UE1 sends industry
Business request message, eNB3 send business request information to mobility management entity MME1.
Step 403, the authentication process of NAS is executed.
It here, include the relevant information of terminal in the business request information, mobility management entity based thereon determines whether
It needs to initiate authentication process, when determination needs, executes this step and do not execute this step then when determination does not need.
Step 404, after the completion of authentication process, MME1 sends initial context to eNB3 and establishes request message.
Step 405, eNB3 executes radio bearer establishment process.
Step 406, after the completion of radio bearer establishment process, eNB3 replys initial context to MME1 and establishes completion message.
Step 407, after MME1 receives initial context foundation completion message, modification carrying is initiated to S-GW and is requested, wherein
Carry the mark of eNB3.
Step 408, S-GW saves the mark (mark of eNB3) for the wireless side network element that terminal newly accesses, and establishes terminal IP
The corresponding relationship of address and wireless side network element ID.
Step 409, S-GW needs to re-start the judgement of following direct tunnels: judging whether to can establish between eNB
Direct tunnel；
If judging result is can be to need to discharge the correlation on S-GW at this time and lead directly to tunnel information, while initiate between eNB
The establishment process of direct tunnel；
If judging result be cannot, need to trigger the foundation of direct tunnel between S-GW, in direct tunnel establishment process
Related straight-through tunnel information on middle update Correspondent Node S-GW；
Step 410, it if the judging result in step 409 is to need to discharge the information of related direct tunnel on S-GW, needs
Execute this step.The direct tunnel information of S-GW deletion local maintenance.Optional simultaneously, S-GW can be deleted on S-GW
The TFT information of UE2.
Step 411, S-GW returns to modification bearing response message to MME1.
In the present embodiment, step 409-410 can be executed parallel with step 411.
Referring to Fig. 5, embodiment illustrated in fig. 5 is suitable for E-UTRAN access system, describes logical when terminal and Correspondent Node
Using the direct tunnel between gateway between letter/business, and gateway does not discharge directly in S1 Release process
When logical tunnel information, the process flow of TAU.Process shown in Fig. 5 the following steps are included:
Step 501,502 after terminal is mobile, sends tracing section updating request to the wireless side network element eNB3 newly accessed and disappear
Breath, eNB3 send tracing section updating request message to the new mobility management entity MME1 selected for terminal.
Step 503, when new mobility management entity is not determining identical as former mobility management entity, new mobile management
Entity sends context request message to former mobility management entity.Former mobility management entity receives context request message
Afterwards, the context response information of the contextual information to new mobility management entity comprising terminal.
Step 504, after new mobility management entity receives context response information, authorizing procedure is initiated.
Here, it if new mobility management entity is according to the contextual information of terminal, determines when needing to initiate authorizing procedure,
It then executes this step and does not execute this step then when determination does not need to initiate authorizing procedure.
Step 505, new mobility management entity saves the contextual information of the terminal, and to former mobility management entity
Responding context confirms message.
Step 506, after MME3 sends beginning context confirmation message, modification carrying request is initiated to S-GW, wherein carrying
The mark of eNB3.
Step 507-509, with step 408-410.In this step, S-GW is interacted with new mobility management entity.
Step 510, S-GW returns to modification bearing response message to new mobility management entity.
Step 511, new mobility management entity is to Authentication Authorization server launch position more new technological process.
Step 512, after the completion of position update flow, Authentication Authorization server is deleted to former mobility management entity launch position
Except process.
Step 513, when new mobility management entity determine the not carrying of activated terminals when, new mobility management entity to
ENB3 sends tracing section updating received message, and is transmitted to UE1 by eNB3.
Step 514, UE1 sends tracing section updating to eNB3 and completes message, and is transmitted to MME3 by eNB3.
It is suitable for E-UTRAN access system referring to Fig. 6 a and Fig. 6 b, Fig. 6 a and Fig. 6 b illustrated embodiment, describes and work as terminal
When between the communication/traffic of Correspondent Node using the direct tunnel between wireless side network element/gateway, there is no S-GW
The X2 switching flow of change.Process shown in Fig. 6 a and Fig. 6 b the following steps are included:
Step 601, when the cell signal that source wireless side network element eNB1 discovery terminal is currently accessed has been lower than threshold value, then
Initiate X2 switching flow；ENB1 is interacted with the eNB3 that it is selected, and the preparation and execution of X2 switching is completed, by the radio bearer of UE1
ENB3 is switched to from eNB1.ENB1 can forward the data of UE1 to eNB3 at this time.
Step 602, eNB3 gives MME1 to send Path Switch Req message, and notice UE1 has occurred and that switching, in message
Carry the mark of eNB3.
Step 603, MME1 initiates modification carrying request to S-GW, wherein carrying the mark of eNB3.
Step 604, S-GW saves the mark (mark of eNB3) for the wireless side network element that terminal newly accesses, and establishes terminal IP
The corresponding relationship of address and wireless side network element ID.
Step 605, S-GW needs to re-start the judgement of following direct tunnels: judging whether to can establish between eNB
Direct tunnel；
For using the scene of the direct tunnel between eNB between UE1 and UE2,
It can be to need to initiate the establishment process of direct tunnel between eNB if judging result is；
If judging result be cannot, trigger the foundation of S-GW direct tunnel, while needing to discharge Correspondent Node eNB2
Upper related straight-through tunnel information.
For using the scene of the direct tunnel between gateway between UE1 and UE2,
Can be with if judging result is, need to discharge the correlation on S-GW at this time and lead directly to tunnel information, while initiate eNB it
Between direct tunnel establishment process；
If judging result be cannot, trigger the foundation of S-GW direct tunnel, i.e. correlation on update S-GW leads directly to tunnel
Road information.
For using the scene of the direct tunnel between eNB between UE1 and UE2, step 606-613 is executed.
Step 606, if in step 605, judging result is to need to discharge the information of the direct tunnel on Correspondent Node eNB2,
Then need to be implemented step 606-610.Processing of the processing of this step with step 307.
Step 607-610, with step 308-311.
Step 611, S-GW sends modification bearing response message to MME1.
In the present embodiment, step 606-610 can be executed parallel with step 611.
Step 612, MME1 sends Path switch Ack message to eNB3.
Step 613, eNB3 notifies eNB1 to carry out resource release.
For using the scene of the direct tunnel between gateway between UE1 and UE2, step 606a-609a is executed.
Step 606a, if in step 605, judging result is to need to discharge the information of the direct tunnel on S-GW, then S-GW
Delete the direct tunnel information of local maintenance.Optional simultaneously, S-GW can delete the TFT information of the UE2 on S-GW.It is optional
, this step can not execute, that is, the direct tunnel information on S-GW can not discharge in handoff procedure.
Step 607a-609a, with step 611-613.
The present embodiment can also be realized using another mode: not execute the judgement in step 605 when switching, directly
Related straight-through tunnel information on Correspondent Node eNB/S-GW is discharged, after the completion of to be switched, S-GW is done again again after receiving data packet
The judgement of direct tunnel.
The present embodiment can equally realize that S-GW notifies eNB2 release direct tunnel by the way of special data package
Message (i.e. step 606-610) can be realized by building special data package, by user of the data packet between S-GW and eNB
It is transmitted on face.
Referring to Fig. 7, embodiment illustrated in fig. 7 is suitable for E-UTRAN access system, describes logical when terminal and Correspondent Node
When between letter/business using the direct tunnel between wireless side network element, X2 switching flow that S-GW changes.Stream shown in Fig. 7
Journey the following steps are included:
Step 701-704, with step 601-605.In this step, eNB3 is interacted with intended gateway S-GW3.
Step 705,706, S-GW3 initiate modification carrying process to the P-GW of UE1.
Step 707, S-GW3 returns to session establishment and responds to MME1.
Step 708, MME1 sends Path switch Ack message to eNB3.
Step 709, eNB3 notifies eNB1 to carry out resource release.
Step 710, MME1 initiates session to former S-GW and deletes process.
Step 711, the relevant information of former S-GW release UE1, and Correspondent Node eNB2 is notified to discharge direct tunnel.Former S-GW
Direct tunnel Indication of Losing Efficacy message is sent to the MME2 of Correspondent Node, direct tunnel identification information 1 is carried in message.
The purpose of the message is that notice MME2 deletes direct tunnel relevant information, which can be by newly-increased message come real
It is existing, can also be realized by modifying existing message, the title of message can be other titles, as long as the message realize it is above-mentioned
Purpose.
Former S-GW needs to find all Correspondent Nodes with direct tunnel of UE1, and notifies all Correspondent Nodes
ENB discharges direct tunnel.Therefore this step may include multiple messages.For being in the Correspondent Node of the same MME, these disappear
Breath can be merged into a piece of news, reexamine whether these Correspondent Nodes belong to the same eNB at MME, same for being not belonging to
One the then independent of eNB sends message.Or S-GW for the Correspondent Node in the same MME, the same eNB using same
Message is sent.
Step 712-715, with step 308-311.
The present embodiment can equally realize that former S-GW notice eNB2 discharges direct tunnel by the way of special data package
Message (i.e. step 711-715), can pass through building special data package realize, user of the data packet between S-GW and eNB
It is transmitted on face.
Referring to figs. 8a and 8b, Fig. 8 a and Fig. 8 b illustrated embodiment are suitable for E-UTRAN access system, describe and work as terminal
When between the communication/traffic of Correspondent Node using the direct tunnel between wireless side network element/gateway, S1 switching flow.
Process shown in Fig. 8 a and Fig. 8 b the following steps are included:
Step 801, when the cell signal that former wireless side network element eNB1 discovery terminal is currently accessed has been lower than threshold value, then
Initiate S1 switching flow；Here, the wireless signal of terminal meeting this cell of cycle detection and other neighboring communities, with measurement report
Form is reported to former wireless side network element.At this point, the Target Wireless side net that former wireless side network element can select a signal strength suitable
First eNB3 initiates switching flow.
Step 802, former wireless side network element eNB1 sends switching request message to former mobility management entity MME1.
Step 803, it after former mobility management entity receives switching request message, is sent out to target mobility management entity MME3
Send forward RELOCATION REQUEST message.
Step 804,805: after target mobility management entity MME3 receives forward RELOCATION REQUEST message, to destination service
Gateway S-GW3 initiates session establishment process；Here, in handoff procedure, be terminal service gateway no change has taken place
When, then do not execute this step.
Step 806: target mobility management entity MME3 sends switching request message to Target Wireless side network element eNB3.
Step 807, network element eNB3 in Target Wireless side is that UE1 reserves resource, and returns to target mobility management entity MME3
Answer switching request acknowledgement message.
Step 808, indirect data forwarding tunnel is if desired established between S-GW, then MME3 initiates indirect forwarding tunnel
Establishing process.
Step 809, MME3 responds forward relocation response message to MME1.
Step 810, indirect data forwarding tunnel is if desired established between S-GW, then MME1 initiates indirect forwarding tunnel
Establishing process.
Step 811,811a, MME1 send switching command to eNB1, and eNB1 is transmitted to UE1.
Step 812a-812d can be carried out state transfer between eNB1 and eNB3.
Step 813, UE1 is switched to eNB3, and sends switching authentic information to eNB3.
Step 814, eNB3 sends handoff notification message to MME3.
Step 815, MME3 interacts forward reorientation with MME1 and completes.
Step 816, MME3 initiates modification carrying request to S-GW3, wherein carrying the mark of eNB3.
Step 817, S-GW3 saves the mark (mark of eNB3) for the wireless side network element that terminal newly accesses, and establishes terminal
The corresponding relationship of IP address and wireless side network element ID.
Step 818, S-GW3 initiates modification carrying request to the P-GW of UE1, wherein carrying the mark of eNB3.
For the scene that S-GW in handoff procedure does not change, step 819-824 is executed.S-GW and S-GW3 phase at this time
Together.
Step 819, the judgement of S-GW following direct tunnels again: judge whether can establish the direct tunnel between eNB；
For using the scene of the direct tunnel between eNB between UE1 and UE2,
It can be to need to initiate the establishment process of direct tunnel between eNB if judging result is；
If judging result be cannot, trigger the foundation of S-GW direct tunnel, while needing to discharge Correspondent Node eNB2
Upper related straight-through tunnel information.
For using the scene of the direct tunnel between gateway between UE1 and UE2,
Can be with if judging result is, need to discharge the correlation on S-GW at this time and lead directly to tunnel information, while initiate eNB it
Between direct tunnel establishment process；
If judging result be cannot, trigger the foundation of S-GW direct tunnel, i.e. correlation on update S-GW leads directly to tunnel
Road information.
Step 820, if in step 819, judging result is to need to discharge the information of the direct tunnel on Correspondent Node eNB2,
Then need to be implemented step 820-826, the processing of the processing of this step with step 307.S-GW3 and MME2 intercommunication in this step.
If in step 819, judging result is to need to discharge the information of the direct tunnel on S-GW, then S-GW deletes local dimension
The direct tunnel information of shield, no longer execution step 821-826.Optional simultaneously, S-GW can delete the TFT of the UE2 on S-GW
Information.Optionally, the direct tunnel information on S-GW can not discharge in handoff procedure.
Step 821-824, with step 308-311.S-GW3 and MME2 intercommunication in this step.
Step 825,826, P-GW send modification bearing response message and are transmitted to MME3 to S-GW3, S-GW3.
In the present embodiment, step 819-824 can be executed parallel with step 818.
Step 827, continue tracing section updating process.
Step 828, former wireless side network element, former gateway, original MME resource release flow.
For the scene that S-GW in handoff procedure changes, and using the direct tunnel between eNB between UE1 and UE2
Scene, execute step 829-833.
Step 829, after the completion of switching, (step 828) when S-GW discharges resource, notice Correspondent Node eNB release is led directly to
Tunnel information.
Step 829-833, with step 820-824.In this step, S-GW and MME2 intercommunication.
The present embodiment can also be realized using another mode: not execute the judgement in step 819 when switching, directly
Related straight-through tunnel information on Correspondent Node eNB/S-GW is discharged, after the completion of to be switched, S-GW is done again again after receiving data packet
The judgement of direct tunnel.
The present embodiment can equally realize that S-GW notifies eNB2 release direct tunnel by the way of special data package
Message (i.e. step 820-824,829-833) can realize that data packet is between S-GW and eNB by building special data package
User face on transmit.
In conjunction with above description as it can be seen that the operation thinking of realizing route management of the present invention can indicate process as shown in Figure 9,
The process the following steps are included:
Step 910: terminal is failed with the local routing that direct tunnel embodies.
Step 920: notifying Correspondent Node wireless side network element/gateway release direct tunnel information of terminal.
In conjunction with above description as it can be seen that the device of realizing route management of the present invention can be used for:
When the local routing failure that terminal is embodied with direct tunnel, Correspondent Node wireless side network element/clothes of terminal are notified
Business gateway discharges direct tunnel information.
The local routing failure that the terminal is embodied with direct tunnel, comprising: mobility event occurs for terminal, causes wireless
Direct tunnel between side network element/gateway needs to discharge；
The mobility event includes S1 Release, SR, TAU, HO.
The device is gateway, discharges direct tunnel in Correspondent Node wireless side network element/gateway of notice terminal
When information, it is used for:
Confirmation wireless side network element between/gateway between direct tunnel need to discharge, notify Correspondent Node wireless side
Network element/gateway discharges direct tunnel information.
The device is gateway, discharges direct tunnel in Correspondent Node wireless side network element/gateway of notice terminal
When information, for sending direct tunnel Indication of Losing Efficacy to Correspondent Node wireless side network element/gateway, wherein including the straight of failure
The identification information in logical tunnel.
Notify that the mode for discharging direct tunnel information includes:
Directly transmit the direct tunnel Indication of Losing Efficacy；Or,
The direct tunnel Indication of Losing Efficacy is contained in data packet and is sent.
The path of the direct tunnel Indication of Losing Efficacy are as follows:
The wireless side network element or gateway of the Correspondent Node are notified by the packet data gateway of core net；Or,
Between wireless side network element or between gateway, mobility management entity transfer is directly notified or passed through.
The device is gateway；Other than mobility event S1 Release, in notice terminal
Before Correspondent Node wireless side network element/gateway release direct tunnel information, it is also used to judge whether to can establish wireless side
Direct tunnel between network element.
The gateway is used for when judging whether to can establish the direct tunnel between wireless side network element:
For using the scene of the direct tunnel between wireless side network element between terminal,
It can be with if judging result is, it is determined that need to initiate the establishment process of direct tunnel between wireless side network element；
It cannot if judging result is, it is determined that need to trigger the foundation of gateway direct tunnel, while needing to discharge
Related straight-through tunnel information on Correspondent Node wireless side network element；
For using the scene of the direct tunnel between gateway between terminal,
If judging result is can be to determine that the correlation for needing to discharge on gateway leads directly to tunnel information, while initiating nothing
The establishment process of direct tunnel between line side network element；
It cannot if judging result is, it is determined that the foundation for needing to trigger direct tunnel between gateway, in direct tunnel
Related straight-through tunnel information on Correspondent Node gateway is updated in establishment process.
The Correspondent Node wireless side network element/gateway deletes the straight-through tunnel to be discharged also according to the notice received
Road information.
In summary as it can be seen that either method or device, the technology of realizing route management of the present invention, when with direct tunnel
When the local routing failure of embodiment, in order to guarantee that Correspondent Node is able to carry out effective path management, realizing route release can be with
Correspondent Node wireless side network element/gateway is notified to discharge direct tunnel information.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, so as to be stored in
It is performed by computing device in storage device, perhaps they are fabricated to each integrated circuit modules or will be in them
Multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hard
Part and software combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (16)
1. a kind of method of realizing route management, which is characterized in that this method comprises:
When the local routing failure that terminal is embodied with direct tunnel, Correspondent Node wireless side network element/service network of terminal is notified
Close release direct tunnel information；
Wherein, when notifying the Correspondent Node wireless side network element of terminal/gateway release direct tunnel information, to Correspondent Node without
Line side network element/gateway sends direct tunnel Indication of Losing Efficacy, wherein the identification information of the direct tunnel comprising failure.
2. the method according to claim 1, wherein the terminal is lost with the local routing that direct tunnel embodies
Effect, comprising: mobility event occurs for terminal, and the direct tunnel between wireless side network element/gateway is caused to need to discharge；
The mobility event includes S1 release Release, service request SR, tracing section updating TAU, switching HO.
3. according to the method described in claim 2, it is characterized in that, Correspondent Node wireless side network element/service network of notice terminal
Close release direct tunnel information, comprising:
Between gateway confirmation wireless side network element/gateway between direct tunnel need to discharge, gateway notice is logical
Believe that opposite end wireless side network element/gateway discharges direct tunnel information.
4. method according to any one of claims 1 to 3, which is characterized in that the mode of notice release direct tunnel information
Include:
Directly transmit the direct tunnel Indication of Losing Efficacy；Or,
The direct tunnel Indication of Losing Efficacy is contained in data packet and is sent.
5. method according to any one of claims 1 to 3, which is characterized in that the path of the direct tunnel Indication of Losing Efficacy
Are as follows:
The wireless side network element or gateway of the Correspondent Node are notified by the packet data gateway of core net；Or,
Between wireless side network element or between gateway, mobility management entity transfer is directly notified or passed through.
6. method according to any one of claims 1 to 3, which is characterized in that in addition to mobility event S1Release with
In the case where outer, before Correspondent Node wireless side network element/gateway release direct tunnel information of notice terminal, also judge
Whether direct tunnel wireless side network element between can establish.
7. according to the method described in claim 6, it is characterized in that, judging whether can establish straight-through between wireless side network element
When tunnel,
For using the scene of the direct tunnel between wireless side network element between terminal,
It can be with if judging result is, it is determined that need to initiate the establishment process of direct tunnel between wireless side network element；
It cannot if judging result is, it is determined that need to trigger the foundation of gateway direct tunnel, while needing to discharge communication
Related straight-through tunnel information on the wireless side network element of opposite end；
For using the scene of the direct tunnel between gateway between terminal,
If judging result is can be to determine that the correlation for needing to discharge on gateway leads directly to tunnel information, while initiating wireless side
The establishment process of direct tunnel between network element；
It cannot if judging result is, it is determined that the foundation for needing to trigger direct tunnel between gateway is established in direct tunnel
Related straight-through tunnel information on Correspondent Node gateway is updated in the process.
8. the method according to claim 1, wherein the Correspondent Node wireless side network element/gateway also root
The direct tunnel information to be discharged is deleted according to the notice received.
9. a kind of device of realizing route management, which is characterized in that the device is used for:
When the local routing failure that terminal is embodied with direct tunnel, Correspondent Node wireless side network element/clothes including notifying terminal
The module for gateway release direct tunnel information of being engaged in；
Wherein, which is gateway, discharges direct tunnel in Correspondent Node wireless side network element/gateway of notice terminal
When information, for sending direct tunnel Indication of Losing Efficacy to Correspondent Node wireless side network element/gateway, wherein including the straight of failure
The identification information in logical tunnel.
10. device according to claim 9, which is characterized in that the terminal is lost with the local routing that direct tunnel embodies
Effect, comprising: mobility event occurs for terminal, and the direct tunnel between wireless side network element/gateway is caused to need to discharge；
The mobility event includes S1Release, SR, TAU, HO.
11. device according to claim 10, which is characterized in that the device is gateway, in the communication of notice terminal
When opposite end wireless side network element/gateway release direct tunnel information, it is used for:
Confirmation wireless side network element between/gateway between direct tunnel need to discharge, notice Correspondent Node wireless side network element/
Gateway discharges direct tunnel information.
12. according to the described in any item devices of claim 9 to 11, which is characterized in that the side of notice release direct tunnel information
Formula includes:
Directly transmit the direct tunnel Indication of Losing Efficacy；Or,
The direct tunnel Indication of Losing Efficacy is contained in data packet and is sent.
13. according to the described in any item devices of claim 9 to 11, which is characterized in that the road of the direct tunnel Indication of Losing Efficacy
Diameter are as follows:
The wireless side network element or gateway of the Correspondent Node are notified by the packet data gateway of core net；Or,
Between wireless side network element or between gateway, mobility management entity transfer is directly notified or passed through.
14. according to the described in any item devices of claim 9 to 11, which is characterized in that the device is gateway；In addition to moving
It is straight-through in Correspondent Node wireless side network element/gateway release of notice terminal in the case where other than dynamic sexual behavior part S1Release
Before tunnel information, it is also used to judge whether can establish the direct tunnel between wireless side network element.
15. device according to claim 14, which is characterized in that the gateway is judging whether to can establish wirelessly
When direct tunnel between the network element of side, it is used for:
For using the scene of the direct tunnel between wireless side network element between terminal,
It can be with if judging result is, it is determined that need to initiate the establishment process of direct tunnel between wireless side network element；
It cannot if judging result is, it is determined that need to trigger the foundation of gateway direct tunnel, while needing to discharge communication
Related straight-through tunnel information on the wireless side network element of opposite end；
For using the scene of the direct tunnel between gateway between terminal,
If judging result is can be to determine that the correlation for needing to discharge on gateway leads directly to tunnel information, while initiating wireless side
The establishment process of direct tunnel between network element；
It cannot if judging result is, it is determined that the foundation for needing to trigger direct tunnel between gateway is established in direct tunnel
Related straight-through tunnel information on Correspondent Node gateway is updated in the process.
16. device according to claim 9, which is characterized in that the Correspondent Node wireless side network element/gateway also root
The direct tunnel information to be discharged is deleted according to the notice received.
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| CN104812070B (en) * | 2014-01-29 | 2020-03-27 | 北京三星通信技术研究有限公司 | Method and equipment for maintaining and releasing UE (user Equipment) resources |
| CN113194517B (en) * | 2016-10-11 | 2023-01-20 | 中国移动通信有限公司研究院 | Local routing processing method, device and storage medium |
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| CN101009907A (en) * | 2006-01-24 | 2007-08-01 | 华为技术有限公司 | Establishment and release method of the tunnel in the evolution network framework and its device |
| CN102056145A (en) * | 2009-10-28 | 2011-05-11 | 中兴通讯股份有限公司 | Method and system for releasing tunnel connection in communication system supporting local IP access |
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| CN101009907A (en) * | 2006-01-24 | 2007-08-01 | 华为技术有限公司 | Establishment and release method of the tunnel in the evolution network framework and its device |
| CN102056145A (en) * | 2009-10-28 | 2011-05-11 | 中兴通讯股份有限公司 | Method and system for releasing tunnel connection in communication system supporting local IP access |
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