CN102256326A - Method and device for realizing routing - Google Patents
Method and device for realizing routing Download PDFInfo
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- CN102256326A CN102256326A CN2010101797643A CN201010179764A CN102256326A CN 102256326 A CN102256326 A CN 102256326A CN 2010101797643 A CN2010101797643 A CN 2010101797643A CN 201010179764 A CN201010179764 A CN 201010179764A CN 102256326 A CN102256326 A CN 102256326A
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Abstract
The invention discloses a method and a device for realizing routing. The method and the device both can be used for acquiring wireless network element information and local gateway information related to a direct channel by aiming at a wireless network element which is to be accessed to a user device, and then confirming if the direct channel can be used between the wireless network element and a local gateway according to the acquired wireless network element information and local gateway information. The method and the device for realizing routing provided by the invention can be used for flexibly judging if the direct channel is needed to be established for the user device according to the contents, such as system information, and the like, in an actual application site, thereby obviously promoting the flexibility of data transmission and ensuring the high efficiency of data transmission as much as possible.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of realization method of routing and device.
Background technology
In order to keep the competitiveness of 3-G (Generation Three mobile communication system) in the communications field, speed is faster, time delay is lower, the mobile communication service of personalization more for the user provides, and reduction operating cost of operator, 3GPP (3rdGeneration Partnership Project, third generation partner program) the standard operation group just is being devoted to evolved packet system (Evolved Packet System, research EPS).Fig. 1 shows the structural representation of evolution grouping domain system, and as shown in Figure 1, whole EPS system is divided into wireless access network and core net two parts.In core net, comprised home subscriber server (Home Subscriber Server, HSS), Mobility Management Entity (Mobility Management Entity, MME), Serving GPRS Support Node (ServingGPRS Support Node, SGSN), policy charging rule function (Policy and Charging RuleFunction, PCRF), gateway (Serving Gateway, SGW), packet data gateway (PDNGateway, PGW) and packet data network (Packet Data Network, packet data network) etc.Below detailed each several part function:
Home subscriber server is the permanent storage place of user contracting data, is positioned at the home network that the user contracts.
Mobility Management Entity, be the storage place of user contracting data, be responsible for the Non-Access Stratum signaling management of terminal to network, the safety verification function of terminal, mobile management, the tracking under user's idle pulley and the paging management function and the bearer management of terminal in current network.
SGSN is the business support point of GERAN and UTRAN user access core network network, and function and Mobility Management Entity are similar, is responsible for user's position renewal, paging management and bearer management etc.
Gateway is the gateway that core net arrives wireless system, is responsible for terminal to the user plane bearer of core net, the metadata cache under the terminal idle pulley, can realize function, Lawful Interception and the grouped data route and the forwarding capability of network side initiation service request; Gateway is responsible for adding up the situation that user terminal uses wireless network, and produces the ticket that terminal is used wireless network, sends charging gateway to.
Packet data gateway, it is the gateway between evolution system and the external packet data network, be connected on internet and the packet data network, be responsible for Internet protocol (Internet Protocol, IP) address assignment, billing function, grouping packet filtering, the policy control etc. of terminal.
Packet data network is the IP operation network of operator, and this network provides IP service by the core net of operator for the user.
Policy charging rule functional entity is to be responsible for providing charge control, the control of online credit, thresholding control, service quality (Quality of Service, QoS) server of tactful aspect rule in the evolution system.
Wireless access network, by evolution base station (E-UTRAN NodeB, eNB) and 3G radio network controller (Radio Network Control, RNC) form, the main transmitting-receiving of being responsible for wireless signal, by air interface and terminal contact, the Radio Resource of management air interface, scheduling of resource, access control etc.
Above-mentioned SGSN is through upgrading, can support and gateway between the S4 interface, and and mobility management unit between adopt the GTPv2 agreement to carry out intercommunication.And for the SGSN that supports the 3G core net, the PS territory network architecture and Fig. 1 are different.This moment, SGSN adopted gn interface to link to each other with MME, adopted the GTPvl protocol interconnection.SGSN links to each other with gateway, and (Gateway GPRS Support Node GGSN), visits directly to carry out packet data network but be connected to Gateway GPRS Support Node by gn interface.
Home eNodeB comprises common Home eNodeB (Home NodeB, HNB) and the Home eNodeB of evolution (Home eNodeN, HeNB), it is small-sized, the lower powered base station of a class, dedicated resources as the certain user is deployed in private sites such as family, group, company or school, be mainly used in to the user provides higher service rate and reduces the needed expense of use high rate services, remedy the covering deficiency of existing distributed cellular radio communication system simultaneously.The advantage of Home eNodeB is economical, convenient, low-power output, plug and play, broadband access, use single-mode terminal etc.
Home eNodeB can be applied in 3G or LTE (Long Term Evolution, the Long Term Evolution) mobile communications network.For the ease of Home eNodeB is managed, in network, introduced new network element: femto gateway.The major function that femto gateway is realized is: the fail safe of checking Home eNodeB, maintenance management is carried out in the operation of Home eNodeB, and according to Carrier Requirements configuration and control Home eNodeB, be responsible for the data message of exchcange core net and Home eNodeB.Fig. 2 is a 3G home base station network Organization Chart, and the 3G Home eNodeB is connected to femto gateway by the Iuh interface of redetermination, and femto gateway is provided to the IuPS and the IuCs interface of core network packet-domain and circuit domain.For 3G network, femto gateway must shield the influence of introducing behind the Home eNodeB terminal and network side.For the LTE network, femto gateway is optionally, so two kinds of connected modes are arranged between LTE Home eNodeB and the core net, and a kind of is that Home eNodeB directly links to each other with core network element, another kind is that Home eNodeB links to each other with core network element by gateway, respectively as shown in Figure 3, Figure 4.Scene for introducing femto gateway shown in Figure 4, femto gateway can not integrated user plane functions, directly sets up user's face between Home eNodeB and core net user plane gateway, can make the flattening of user's face like this, data transmission delay is reduced, as shown in Figure 5.
Home eNodeB can also support local IP to insert except supporting by the access of mobile core network.Possess at Home eNodeB under the condition of local IP access capability and the signatory permission of user local IP access, can realize that the user inserts this locality of other IP devices of home network or internet.Can realize the shunting of Internet data service by local access function, reducing the core net load, and can not pass through core net, make the transfer of data convenient and efficient for the visit of home network device.Local IP access function also can use on macrocellular, and main application and Home eNodeB are similar, more is to be applied in local IP to insert this scene of Internet, and purpose is to reduce the core net load.Fig. 6 has provided the framework of realizing above-mentioned local access function.Wherein, local access network closes the network that is linked into external network (for example internet) as this locality, and functions such as address assignment, charging, grouping packet filtering, policy control are provided.This network element can be used as self-existent network element as a logical block in actual deployment, also can unite deployment with existing base station from home or home base-station gateway.And, if this network element exists as an independent network element, then both can be positioned at the wireless side network, also can be positioned at core net.
Still can keep in the process that customer location is moved continuously for this locality is connected, can also introduce expansion tunnel (Extension Tunnel).When UE initially connects, between wireless side network element and local gateway (LGW), use direct tunnel Data transmission, to guarantee the high efficiency of data passes.In case the position of UE has taken place to move, and then can not re-use direct tunnel Data transmission between wireless side network element that UE will insert and the LGW, but continue Data transmission, thereby guarantee professional continuity by the expansion tunnel.Obviously, above-mentioned UE moves the fixing mode of using the expansion tunnel in back in the position, lack flexibility, and is unfavorable for the high efficiency of data passes.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of realization method of routing and device, to improve the transfer of data flexibility, guarantees the high efficiency of data passes as far as possible.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of realization method of routing, this method comprises:
At the wireless side network element that UE will insert, obtain and relevant this wireless side net element information and the LGW information in direct tunnel; According to wireless side net element information that is obtained and LGW information, determine whether between described wireless side network element and LGW, to use direct tunnel.
The operation that determines whether to use direct tunnel is to carry out in following process one of at least:
The UE handoff procedure;
The tracking area fine jade of UE is upgraded or the service request process by the district.
In the UE handoff procedure, determine whether to use direct tunnel by LGW;
Concrete definite process comprises: LGW according to the information of Target cell or base station judge can and target BS between set up direct tunnel.
The process of obtaining described wireless side net element information comprises:
When SGW did not change, the target mobile management unit sent the carrying request of revising by SGW and packet data gateway PGW to LGW, and the information of Target cell or base station is sent to LGW; Perhaps,
When SGW changed, the target mobile management unit send to be created the carrying request to target SGW, and target SGW sends the carrying request of revising by PGW to LGW, and the information of Target cell or base station is sent to LGW.
The judged result that determines whether to use direct tunnel is for can use direct tunnel, and this method further comprises:
Described judged result is notified to mobile management unit, sets up described direct tunnel by mobile management unit.
In the tracking area/Routing Area Update or service request process of UE, determine whether to use direct tunnel by LGW;
Concrete definite process comprises: LGW according to the information of sub-district or base station judge can and the base station between set up direct tunnel.
The process of obtaining described wireless side net element information comprises:
When SGW did not change, mobile management unit sent to LGW by SGW, PGW and revises the carrying request, sends to LGW with the information with sub-district or base station; Perhaps,
When SGW changed, the target mobile management unit send to be created the carrying request to target SGW, and target SGW sends the carrying request of revising by PGW to LGW, and the information of Target cell or base station is sent to LGW.
The judged result that determines whether to use direct tunnel is for can use direct tunnel, and this method further comprises:
Described judged result is notified to mobile management unit, sets up described direct tunnel by mobile management unit.
When determining whether to use direct tunnel, the LGW that can set up direct tunnel and the table of comparisons that concerns of wireless side network element are considered.
A kind of device of realizing Route Selection, this device comprise direct tunnel decision information maintenance unit, direct tunnel decision package; Wherein,
Described direct tunnel decision information maintenance unit is used for the wireless side network element that will insert at UE, obtains and direct relevant this wireless side net element information and the LGW information in tunnel;
Described direct tunnel decision package is used for according to wireless side net element information that is obtained and LGW information, determines whether to use direct tunnel between described wireless side network element and LGW.
Described direct tunnel decision package determines whether to use the operation in direct tunnel, is to carry out in following process one of at least:
The UE handoff procedure;
The tracing section updating of UE or route district or service request process.
In the UE handoff procedure, described direct tunnel decision package is arranged among the LGW, is used for:
According to the information of Target cell or base station judge LGW can and target BS between set up direct tunnel.
Described direct tunnel decision information maintenance unit is arranged in the target mobile management unit, is used for:
Take place when constant at SGW, by sending the carrying request of revising to SGW, PGW, the Target cell that wherein comprised or the information of base station are sent to described direct tunnel decision package; Perhaps,
When SGW changed, by send to create the carrying request to destination service gateway SGW, gateway SGW and packet data gateway PGW sent the carrying request of revising to LGW, and the information of Target cell or base station is sent to described direct tunnel decision package.
The judged result that determines whether to use direct tunnel is for can use direct tunnel, and this device further comprises direct tunnel performance element;
Described direct tunnel decision package is further used for described judged result is sent to described direct tunnel performance element;
Described direct tunnel performance element is used to set up described direct tunnel.
Described direct tunnel performance element is arranged in the mobile management unit.
In the tracing section updating or Routing Area Update or service request process of UE, described direct tunnel decision package is arranged among the LGW, is used for:
According to the information of sub-district or base station judge can and the base station between set up direct tunnel.
Described direct tunnel decision information maintenance unit is arranged in the target mobile management unit, is used for:
Take place when constant at SGW, by sending the carrying request of revising to SGW, PGW, the sub-district that wherein comprised or the information of base station are sent to described direct tunnel decision package;
When SGW changed, by send to create the carrying request to destination service gateway SGW, gateway SGW and packet data gateway PGW sent the carrying request of revising to LGW, and the information of Target cell or base station is sent to described direct tunnel decision package.
The judged result that determines whether to use direct tunnel is for can use direct tunnel, and this device further comprises direct tunnel performance element;
Described direct tunnel decision package is further used for described judged result is sent to described direct tunnel performance element;
Described direct tunnel performance element is used to set up described direct tunnel.
Described direct tunnel performance element is arranged in the mobile management unit.
When described direct tunnel decision package determines whether to use direct tunnel, be used for comprise LGW and the wireless side network element that can set up direct tunnel are concerned that the gateway information of the table of comparisons considers.
The present invention realizes method of routing and device, can judge whether that needs are that subscriber equipment is set up direct tunnel according to the contents such as system information in the practical application scene flexibly, therefore can obviously improve the transfer of data flexibility, and also can guarantee the high efficiency of data passes as far as possible.
Description of drawings
Fig. 1 is the structural representation of evolution grouping domain system;
Fig. 2 is a 3G home base station network configuration diagram;
Fig. 3 is one of LTE home base station network configuration diagram;
Fig. 4 is two of a LTE home base station network configuration diagram;
Fig. 5 is three of a LTE home base station network configuration diagram;
Fig. 6 is for realizing one of local network architecture schematic diagram that inserts;
Fig. 7 is in the handoff procedure of one embodiment of the invention, is carried out the flow chart of Route Selection by local gateway;
Fig. 8 is in the interior X2 handoff procedure of the LTE connecting system of one embodiment of the invention, carries out the flow chart of Route Selection;
Fig. 9 is in the tracing section updating or service request process of one embodiment of the invention, is carried out the flow chart of Route Selection by local gateway;
Figure 10 is the general flow chart of the realization Route Selection of one embodiment of the invention;
Figure 11 is the installation drawing of the realization Route Selection of one embodiment of the invention.
Embodiment
In actual applications, if LTE inserts, then the base station refers to ordinary base station or base station from home, and mobile management unit refers to MME.Further, if base station from home and in comprising the framework of home base-station gateway, then message transmitted also needs to pass through home base-station gateway between base station and the mobile management unit, but home base-station gateway can not revised parameter related to the present invention, therefore this framework is not carried out specified otherwise here.In addition, if UTRAN/GERAN inserts, then the base station refers to RNC or HNB GW, and mobile management unit refers to SGSN.
Referring to Fig. 7, Fig. 7 is in the handoff procedure of one embodiment of the invention, is carried out the flow chart of Route Selection by LGW.Flow process shown in Figure 7 is applicable in the LTE connecting system to be switched, switches in the UTRAN/GERAN intra-system handover or between LTE and UTRAN/GERAN system.
If switch in same system, as in the LTE intra-system handover, perhaps in the UTRAN/GERAN intra-system handover, mobile management unit may not change.If mobile management unit does not change, then source mobile management unit and target mobile management unit can be regarded same network element as, and all between message transmitted can be omitted.Before switching, UE has set up local connection.Set up the expansion tunnel between PGW and the LGW, set up direct tunnel between LGW and the source base station.
Flow process shown in Figure 7 may further comprise the steps:
Step 700: source base station is initiated switching flow, and requires the UE reporting measurement reports.
Step 701: after source base station has been selected target BS, send handoff request message, wherein comprise the information such as bearing identification of target BS sign/Target Cell Identifier and target following district/Routing Area Identifier, UE to the source mobile management unit.
Step 702: the source mobile management unit sends to the target mobile management unit and transmits RELOCATION REQUEST message, wherein carries the contextual information of UE.Because UE set up local connection, then also need to comprise information such as the address of the address of SGW and tunnel end sign, LGW and tunnel end sign in the contextual information.
Step 703: the target mobile management unit judges whether to reselect SGW, and being judged to be in the present embodiment does not need.The target mobile management unit sends handoff request to target BS, wherein carries the address of SGW and address and the tunnel end of tunnel end sign and/or LGW and identifies to target BS.
Carry out afterwards and switch the residue flow process of preparing.The abridged process is a prior art in the middle of step 703 and the step 704, is known in those skilled in the art, and irrelevant with the present invention, does not do here and gives unnecessary details.
Step 704:UE switches to objective network, sends to target BS and switches the request of finishing.
Step 705: target BS sends the switching notice request to the target mobile management unit, wherein carries address and user's face tunnel end sign of Base Station Identification and/or tracking area/Routing Area Identifier and/or the cell ID and the target BS of the current access of UE.
Step 706: the target mobile management unit sends the carrying request of revising to SGW, wherein carry user's face address of target BS and tunnel end sign and notice SGW above-mentioned address is sent to the indication of LGW, further can also comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 707:SGW sends the carrying request of revising to PGW, wherein carry user's face address of target BS and tunnel end sign and notice PGW above-mentioned address is sent to the indication of LGW, further can also comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 708:PGW sends to LGW and revises the carrying request, wherein carries the user's face address and the tunnel end sign of target BS, further can also comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 709:LGW judges between LGW and the target BS whether can set up direct tunnel according to above-mentioned information.
Step 710:LGW returns the modification bearing response message by PGW, SGW to the target mobile management unit, wherein carries the indication information of whether setting up direct tunnel.
Step 711: mobile management unit judges whether to upgrade the information of target BS according to the indication information in the modification bearing response message.If LGW indication can't be set up direct tunnel, and the target mobile management unit does not issue address and the tunnel end sign of LGW in the step 703 in handoff request, then need not execution in step 712.
Step 712: if the LGW indication can't be set up direct tunnel, and the target mobile management unit has issued address and the tunnel end sign of LGW in the step 703 in handoff request, then the target mobile management unit sends the bearer update request to target BS, wherein carries the indication information that can't set up direct tunnel.After target BS is received this indication information, in subsequent operation, use address and the tunnel end sign of SGW.
If the LGW indication can be set up direct tunnel, and the target mobile management unit has issued address and the tunnel end sign of LGW in the step 703 in handoff request, then the target mobile management unit sends the bearer update request to target BS, wherein carries the indication information that can set up direct tunnel.After target BS is received this indication information, in subsequent operation, use address and the tunnel end sign of LGW.
If the LGW indication can be set up direct tunnel, and the target mobile management unit does not issue address and the tunnel end sign of LGW in the step 703 in handoff request, then the target mobile management unit sends the bearer update request to target BS, wherein carries the indication information that can set up direct tunnel and address and the tunnel end sign of LGW.After target BS is received this indication information, in subsequent operation, use address and the tunnel end sign of LGW.
The remaining step that follow-up execution is switched, the abridged process is a prior art, is known in those skilled in the art, and irrelevant with the present invention, does not do here and gives unnecessary details.
In the present embodiment, be equally applicable to the flow process that SGW changes.If SGW changes, the delivery of content that the present invention relates to also is similar.It is target SGW that step 706 relates to the SGW that transmits target BS to the step 712.SGW changes other hand off signaling that caused may be different with present embodiment, but do not relate to content involved in the present invention, do not do here and give unnecessary details.
Referring to Fig. 8, Fig. 8 is in the interior X2 handoff procedure of the LTE connecting system of one embodiment of the invention, carries out the flow chart of Route Selection.Flow process shown in Figure 8 is applicable in the LTE connecting system to be switched.
Before switching, UE has set up local connection.Set up the expansion tunnel between PGW and the local gateway, set up direct tunnel between local access network pass and the source base station.
Flow process shown in Figure 8 may further comprise the steps:
Step 801: source base station is initiated switching flow, because directly there are X2 interface in source base station and target BS, therefore can pass through X2 interface interacting message information each other between the two, and finish wireless resource reservation.After this process was carried out, UE had switched to target BS.
Step 802: target BS is to mobile management unit transmit path conversion request message, the information such as bearing identification of wherein carrying target BS sign/Target Cell Identifier and target following district/Routing Area Identifier, UE.
Step 803: mobile management unit judges whether SGW needs to change, and is judged to be needs in the present embodiment.Mobile management unit sends the establishment conversation request according to the local link information of UE to target SGW, wherein carry user's face address of target BS and tunnel end sign and notice SGW above-mentioned address is sent to the indication of LGW, further can comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 804: target SGW sends the carrying request of revising to PGW, wherein carry user's face address of target BS and tunnel end sign and notice PGW above-mentioned address is sent to the indication of LGW, further can comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 805:PGW sends to LGW and revises the carrying request, wherein carries the user's face address and the tunnel end sign of target BS, further can comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 806:LGW judges between self and the target BS whether can set up direct tunnel according to above-mentioned information.
Step 807:LGW returns the modification bearing response message by PGW to target SGW, wherein carries the indication information of whether setting up direct tunnel.
Step 808: target SGW returns to mobile management unit and creates conversational response message, wherein carries the indication information of whether setting up direct tunnel.
Step 809: mobile management unit judges whether to upgrade the information of target BS according to the indication information in the establishment conversational response message.
Step 810: if the LGW indication can't be set up direct tunnel, then mobile management unit is replied to the conversion of target BS transmit path, wherein carries address and the tunnel end sign of SGW.
If the LGW indication can be set up direct tunnel, then mobile management unit is replied to the conversion of target BS transmit path, wherein carry address and the tunnel end sign of LGW, perhaps carry address and tunnel end sign, the address of LGW and the indication information that can the tunnel end identify and set up direct tunnel of SGW simultaneously.
Step 811: mobile management unit sends the deletion conversation request message to source SGW, the UE contextual information on the deletion source SGW; Source SGW is according to the request deletion session of mobile management unit.
The remaining step that follow-up execution is switched, the abridged process is a prior art, is known in those skilled in the art, and irrelevant with the present invention, does not do here and gives unnecessary details.
In the present embodiment, be equally applicable to the constant flow process of SGW.If SGW is constant, then two message in step 803 and the step 804 are respectively to revise the carrying request and revise the carrying response, and the delivery of content that the present invention relates to still similarly.In this case, step 811 need not to carry out.
Referring to Fig. 9, Fig. 9 is in the tracing section updating or service request process of one embodiment of the invention, is carried out the flow chart of Route Selection by local gateway.Flow process shown in Figure 9 is applicable to the tracking area position updating process that service request process in the EUTRAN/UTRAN/GERAN connecting system and EUTRAN connecting system, mobile management unit and SGW do not change.
Before initiating tracking area position updating process or service request, UE has set up local connection.Set up the expansion tunnel between PGW and the local gateway.
Flow process shown in Figure 9 may further comprise the steps:
Step 901 to step 902:UE by base station initiating updating of tracking area request or service request, wherein carry address and user's face tunnel end sign of Base Station Identification and/or tracking area/Routing Area Identifier and/or the cell ID and the access base station of the current access of UE.
Step 903: mobile management unit sends initial context to the base station and sets up request message, wherein carries the address of SGW and address and the tunnel end sign of tunnel end sign and/or LGW.
Step 904: the base station sends initial context to mobile management unit and sets up response message.
Step 905: mobile management unit sends the carrying request of revising to SGW, wherein carry user's face address of base station and tunnel end sign and notice SGW above-mentioned address is sent to the indication of LGW, further can comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 906:SGW sends the carrying request of revising to PGW, wherein carry user's face address of base station and tunnel end sign and notice PGW above-mentioned address is sent to the indication of LGW, further can comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 907:PGW sends to LGW and revises the carrying request, wherein carries the user's face address and the tunnel end sign of base station, further can comprise Base Station Identification and/or the tracking area/Routing Area Identifier and/or the cell ID of the current access of UE.
Step 908:LGW judges between self and the base station whether can set up direct tunnel according to above-mentioned information.
Step 909:LGW returns the modification bearing response message by PGW, SGW to mobile management unit, wherein carries the indication information of whether setting up direct tunnel.
Step 910: mobile management unit judges whether to upgrade the information of base station according to the indication information in the modification bearing response message.If LGW indication can't be set up direct tunnel, and mobile management unit does not issue address and the tunnel end sign of LGW in the step 903 in handoff request, then need not execution in step 911.
Step 911: if the LGW indication can't be set up direct tunnel, and mobile management unit has issued address and the tunnel end sign of LGW in the step 903 in handoff request, then mobile management unit sends the bearer update request to the base station, wherein carries the indication information that can't set up direct tunnel.After this indication information is received in the base station, in subsequent operation, use address and the tunnel end sign of SGW.
If the LGW indication can be set up direct tunnel, and mobile management unit has issued address and the tunnel end sign of LGW in the step 903 in handoff request, then mobile management unit sends the bearer update request to the base station, wherein carries the indication information that can set up direct tunnel.After this indication information is received in the base station, in subsequent operation, use address and the tunnel end sign of LGW.
If the LGW indication can be set up direct tunnel, and mobile management unit does not issue address and the tunnel end sign of LGW in the step 903 in handoff request, then mobile management unit sends the bearer update request to the base station, wherein carries the address of LGW and the indication information that the tunnel end identifies and can set up direct tunnel.After this indication information is received in the base station, in subsequent operation, use address and the tunnel end sign of LGW.
The remaining step of follow-up execution tracing section updating or service request, the abridged process is a prior art, is known in those skilled in the art, and irrelevant with the present invention, does not do here and gives unnecessary details.
In the present embodiment, be equally applicable to the flow process that SGW changes.If SGW changes, the delivery of content that the present invention relates to also is similar.It is target SGW that step 906 relates to the SGW that transmits the base station to the step 909.SGW changes other hand off signaling that caused may be different with present embodiment, but do not relate to content involved in the present invention, do not do here and give unnecessary details.
Further, present embodiment also is useful in the scene that mobile management unit changes in tracking area/Routing Area Update process.If mobile management unit changes, what then the mobile management unit among the figure referred to all is the target mobile management unit, between source mobile management unit and the target mobile management unit is technology known in those skilled in the art alternately, the information that wherein comprises local gateway in the UE contextual information of source mobile management unit in the context response request that the mark mobile management unit sends, other steps and information and the present invention are irrelevant, do not do here and give unnecessary details.
In conjunction with above flow process as can be known, the present invention realizes that the technical thought of Route Selection can represent as shown in figure 10.Referring to Figure 10, Figure 10 is the general flow chart of the realization Route Selection of one embodiment of the invention, and this flow process may further comprise the steps:
Step 1010:, obtain and relevant this wireless side net element information and the LGW information in direct tunnel at the wireless side network element that UE will insert.Described wireless side net element information comprise following one of at least: closed user group id, tracking area identification, Routing Area Identifier, Base Station Identification, cell ID.Described LGW information comprise following one of at least: address, domain-name information.
Step 1020:, determine whether between described wireless side network element and LGW, to use direct tunnel according to wireless side net element information that is obtained and LGW information.Concrete definite method has multiple, as: according to wireless side net element information that is obtained and LGW information, search the pairing tunnel of the above-mentioned information of obtaining in the gateway information such as the table of comparisons and set up configuration can setting up concerning of direct tunnel, set up configuration by the tunnel that finds and know whether can use direct tunnel.
Above-mentioned gateway information can be local static configuration, or dynamically issues by operator's management system, or by obtaining to other network elements inquiries.Described other network elements include but not limited to dns server, operator's configuration management system etc.
Step 1030: when determining to use direct tunnel, between described wireless side network element and LGW, set up the direct tunnel of supporting that UE communicates by letter.
In actual applications, in order to realize the above flow process smoothly, can carry out setting as shown in figure 11.Referring to Figure 11, Figure 11 is the installation drawing of the realization Route Selection of one embodiment of the invention, and this device comprises continuous direct tunnel decision information maintenance unit, direct tunnel decision package, direct tunnel performance element.Directly tunnel decision information maintenance unit and direct tunnel decision package are arranged among the LGW usually, and directly the tunnel performance element then is arranged in the mobile management unit usually.In fact, above-mentioned each unit can divide if close and be located at each position in the network, as long as can realize various functions smoothly and realize Route Selection.
When practical application, the direct tunnel decision information maintenance unit wireless side network element that can will insert at UE, obtain and safeguard and direct relevant this wireless side net element information and the LGW information in tunnel, described wireless side net element information and LGW information can also be sent to direct tunnel decision package.
Directly the tunnel decision package can determine whether to use direct tunnel between described wireless side network element and LGW, and notify direct tunnel performance element according to wireless side net element information of receiving and LGW information.
Directly the tunnel performance element is when directly the tunnel decision package is determined to use direct tunnel, according to setting up the direct tunnel of supporting that UE communicates by letter from the notice of direct tunnel decision package between described wireless side network element and the LGW.
The specific operation process that above-mentioned each operating unit can be realized is described in detail in aforementioned flow process, does not repeat them here.
In sum as seen, no matter be method or device, the present invention realizes that the technology of Route Selection can judge whether that needs are that UE sets up direct tunnel flexibly according to the contents such as system information in the practical application scene, therefore can obviously improve the transfer of data flexibility, and also can guarantee the high efficiency of data passes as far as possible.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. realize method of routing for one kind, it is characterized in that this method comprises:
At the wireless side network element that user equipment (UE) will insert, obtain and relevant this wireless side net element information and the local gateway LGW information in direct tunnel; According to wireless side net element information that is obtained and LGW information, determine whether between described wireless side network element and LGW, to use direct tunnel.
2. method according to claim 1 is characterized in that, the operation that determines whether to use direct tunnel is to carry out in following process one of at least:
The UE handoff procedure;
Tracking area/the Routing Area Update of UE or service request process.
3. method according to claim 2 is characterized in that, in the UE handoff procedure, is determined whether to use direct tunnel by LGW;
Concrete definite process comprises: LGW according to the information of Target cell or base station judge can and target BS between set up direct tunnel.
4. method according to claim 3 is characterized in that, the process of obtaining described wireless side net element information comprises:
When gateway SGW did not change, the target mobile management unit sent the carrying request of revising by SGW and packet data gateway PGW to LGW, and the information of Target cell or base station is sent to LGW; Perhaps,
When SGW changed, the target mobile management unit send to be created the carrying request to target SGW, and target SGW sends the carrying request of revising by PGW to LGW, and the information of Target cell or base station is sent to LGW.
5. according to claim 3 or 4 described methods, it is characterized in that the judged result that determines whether to use direct tunnel is for can use direct tunnel, this method further comprises:
Described judged result is notified to mobile management unit, sets up described direct tunnel by mobile management unit.
6. method according to claim 2 is characterized in that, in the tracking area/Routing Area Update or service request process of UE, is determined whether to use direct tunnel by LGW;
Concrete definite process comprises: LGW according to the information of sub-district or base station judge can and the base station between set up direct tunnel.
7. method according to claim 6 is characterized in that, the process of obtaining described wireless side net element information comprises:
When SGW did not change, mobile management unit sent to LGW by SGW, PGW and revises the carrying request, sends to LGW with the information with sub-district or base station; Perhaps,
When SGW changed, the target mobile management unit send to be created the carrying request to target SGW, and target SGW sends the carrying request of revising by PGW to LGW, and the information of Target cell or base station is sent to LGW.
8. according to claim 6 or 7 described methods, it is characterized in that the judged result that determines whether to use direct tunnel is for can use direct tunnel, this method further comprises:
Described judged result is notified to mobile management unit, sets up described direct tunnel by mobile management unit.
9. method according to claim 1 and 2 is characterized in that, when determining whether to use direct tunnel, the LGW that can set up direct tunnel and the table of comparisons that concerns of wireless side network element is considered.
10. a device of realizing Route Selection is characterized in that, this device comprises direct tunnel decision information maintenance unit, direct tunnel decision package; Wherein,
Described direct tunnel decision information maintenance unit is used for the wireless side network element that will insert at UE, obtains and direct relevant this wireless side net element information and the LGW information in tunnel;
Described direct tunnel decision package is used for according to wireless side net element information that is obtained and LGW information, determines whether to use direct tunnel between described wireless side network element and LGW.
11. device according to claim 10 is characterized in that, described direct tunnel decision package determines whether to use the operation in direct tunnel, is to carry out in following process one of at least:
The UE handoff procedure;
The tracing section updating of UE or route district or service request process.
12. device according to claim 11 is characterized in that, in the UE handoff procedure, described direct tunnel decision package is arranged among the LGW, is used for:
According to the information of Target cell or base station judge LGW can and target BS between set up direct tunnel.
13. device according to claim 12 is characterized in that, described direct tunnel decision information maintenance unit is arranged in the target mobile management unit, is used for:
Take place when constant at SGW, by sending the carrying request of revising to SGW, PGW, the Target cell that wherein comprised or the information of base station are sent to described direct tunnel decision package; Perhaps,
When SGW changed, by send to create the carrying request to destination service gateway SGW, gateway SGW and packet data gateway PGW sent the carrying request of revising to LGW, and the information of Target cell or base station is sent to described direct tunnel decision package.
14., it is characterized in that the judged result that determines whether to use direct tunnel is for can use direct tunnel according to claim 12 or 13 described devices, this device further comprises direct tunnel performance element;
Described direct tunnel decision package is further used for described judged result is sent to described direct tunnel performance element;
Described direct tunnel performance element is used to set up described direct tunnel.
15. device according to claim 14 is characterized in that, described direct tunnel performance element is arranged in the mobile management unit.
16. device according to claim 11 is characterized in that, in the tracing section updating or Routing Area Update or service request process of UE, described direct tunnel decision package is arranged among the LGW, is used for:
According to the information of sub-district or base station judge can and the base station between set up direct tunnel.
17. device according to claim 16 is characterized in that, described direct tunnel decision information maintenance unit is arranged in the target mobile management unit, is used for:
Take place when constant at SGW, by sending the carrying request of revising to SGW, PGW, the sub-district that wherein comprised or the information of base station are sent to described direct tunnel decision package;
When SGW changed, by send to create the carrying request to destination service gateway SGW, gateway SGW and packet data gateway PGW sent the carrying request of revising to LGW, and the information of Target cell or base station is sent to described direct tunnel decision package.
18., it is characterized in that the judged result that determines whether to use direct tunnel is for can use direct tunnel according to claim 16 or 17 described devices, this device further comprises direct tunnel performance element;
Described direct tunnel decision package is further used for described judged result is sent to described direct tunnel performance element;
Described direct tunnel performance element is used to set up described direct tunnel.
19. device according to claim 18 is characterized in that, described direct tunnel performance element is arranged in the mobile management unit.
20. according to claim 10 or 11 described devices, it is characterized in that, when described direct tunnel decision package determines whether to use direct tunnel, be used for comprise LGW and the wireless side network element that can set up direct tunnel are concerned that the gateway information of the table of comparisons considers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010179764.3A CN102256326B (en) | 2010-05-19 | 2010-05-19 | A kind of method and apparatus realizing Route Selection |
| PCT/CN2011/073448 WO2011144000A1 (en) | 2010-05-19 | 2011-04-28 | Route selection method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010179764.3A CN102256326B (en) | 2010-05-19 | 2010-05-19 | A kind of method and apparatus realizing Route Selection |
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| CN102256326A true CN102256326A (en) | 2011-11-23 |
| CN102256326B CN102256326B (en) | 2016-06-15 |
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| CN201010179764.3A Expired - Fee Related CN102256326B (en) | 2010-05-19 | 2010-05-19 | A kind of method and apparatus realizing Route Selection |
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| WO (1) | WO2011144000A1 (en) |
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| CN102256329A (en) * | 2010-05-19 | 2011-11-23 | 中兴通讯股份有限公司 | Path selection method and device |
| CN102685829A (en) * | 2012-05-11 | 2012-09-19 | 中国联合网络通信集团有限公司 | Method, device and equipment for handover of user under base station straight-through architecture |
| WO2017071282A1 (en) * | 2015-10-30 | 2017-05-04 | 中兴通讯股份有限公司 | Method of realizing mobility management and network element |
| CN109495873A (en) * | 2017-09-11 | 2019-03-19 | 大唐移动通信设备有限公司 | A kind of method for configuring route and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109392038B (en) | 2017-08-11 | 2022-09-09 | 华为技术有限公司 | Communication method, source base station, target base station, core network equipment and terminal equipment |
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| CN101563948A (en) * | 2006-12-21 | 2009-10-21 | 艾利森电话股份有限公司 | Arrangement and method relating to direct tunnelling in connection with handover in a communications network |
| CN101400153A (en) * | 2007-09-27 | 2009-04-01 | 北京三星通信技术研究有限公司 | Method for direct communication by user equipment through HNB access system |
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| CN102256329A (en) * | 2010-05-19 | 2011-11-23 | 中兴通讯股份有限公司 | Path selection method and device |
| CN102256329B (en) * | 2010-05-19 | 2016-03-02 | 中兴通讯股份有限公司 | A kind of method and apparatus realizing Route Selection |
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| WO2017071282A1 (en) * | 2015-10-30 | 2017-05-04 | 中兴通讯股份有限公司 | Method of realizing mobility management and network element |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011144000A1 (en) | 2011-11-24 |
| CN102256326B (en) | 2016-06-15 |
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