CN1849004B - Position switching method and apparatus - Google Patents
Position switching method and apparatus Download PDFInfo
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- CN1849004B CN1849004B CN2005100912747A CN200510091274A CN1849004B CN 1849004 B CN1849004 B CN 1849004B CN 2005100912747 A CN2005100912747 A CN 2005100912747A CN 200510091274 A CN200510091274 A CN 200510091274A CN 1849004 B CN1849004 B CN 1849004B
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Abstract
A method for carrying out position switch-over includes not carrying PDP context in message answering update side SGSN back if universal packet radio service tunnel in not set up for PDP context and gateway universal packet radio support node by original SGSN when request for obtaining PDP context sent by update side SGSN is received by original side SGSN, not sending request to update PDP for PDP context to GGSN when said answering back message is received by update side SGSN than ending position switch-over flow.
Description
Technical field
The present invention relates to field of wireless, particularly relate to method and the device that switch a kind of position.
Background technology
Service universal grouping wireless business supporting node (SGSN) is a kind of GPRS/UMTS packet domain core network network (CN) equipment, mainly accomplishes the route and the functions such as forwarding, encryption and authentication, session management, mobile management, Logical Link Management, ticket generation and output of packet data package.The position of SGSN in mobile communications network is as shown in Figure 1.
The Chinese translation that network element among Fig. 1 is corresponding sees the following form:
MSC/VLR: mobile switching center SGSN: Serving GPRS Support Node
HLR: attaching position register GGSN: Gateway GPRS Support Node
BSS:GSM base station sub-system UTRAN:UMTS wireless access network
MS: mobile station UE: subscriber equipment
AUC: the SCP of AUC: business control nodes
SMC: the PDN of short message service center: packet data network
CG: charging gateway GMLC: critical point mobile location centre Chinese
Conversation management functional among the SGSN (SM, Session Management) is between mobile management function and user plane, and the no response data delivery service of using bottom more to provide provides the connection management service to user plane.It accomplishes the controlled function that core network SGSN sets up, revises and discharge to the GTP tunnel between the GGSN (GPRSTunnelling Protocol Tunnel) on the one hand, accomplishes the controlled function of foundation, modification and the release of RAB RAB (Radio Access Bearer) between SGSN and RNC (Radio Network Controller)/MS (Mobile Station) on the other hand.
The foundation of said GTP tunnel is based on the foundation of chain of command (GTP-C) and user plane (GTP-U).
Said GTP-C is used to transmit the GTP signaling; Said GTP-U is used for the user and transmits the GTP data service.
For a PDP Context, only after having set up GTP tunnel between SGSN and the GGSN, just can carry out communicating by letter of chain of command and user plane.In GTP V1 protocol version, TEID (TunnelEndpoint Identifier) is used to identify a GTP tunnel, a Path end point of sign and a PDP Context in receiving GTP-C or GTP-U protocol entity.TEID is unique for the IP address of a logical node (like SGSN, GGSN etc.).TEID distributes by recipient's end points of GTP tunnel is local, and transmit leg uses.Transmit leg is carried at TEID information in GTP-C and the GTP-U message header and sends to the other side, and the recipient comes the GTP tunnel under location signaling or the data according to the TEID in the message header.In the activation process of PDP, SGSN and GGSN intercourse the TEID of chain of command and data surface, set up its GTP-C and GTP-U tunnel, and follow-up signaling and data use this tunnel to transmit.
The user possibly switched between different BSS/RNC in the process that moves, if new and old BSS/RNC belongs to different SGSN, then need user's PDP Context be moved to new side SGSN from old side SGSN through the position switching flow between SGSN.Existing position switching flow is as shown in Figure 2, and is visible from figure, comprises the following steps:
-user terminal sends position updating request to upgrading side SGSN;
After-renewal side SGSN receives this request, obtain the contextual request message of SGSN (SGSN Context Request) to former side SGSN transmission, described SGSN context comprises PDP Context;
-former side SGSN carries PDP Context in replying message (SGSN Context Response), send to upgrade side SGSN.This PDP Context comprises GGSN distributes to former side SGSN for this PDP Context GTP-C and GTP-U TEID;
After-renewal side SGSN receives and replys message; For this PDP distributes second sign (Tunnel EndpointIdentifier Data II); And with its be carried on receive the response in (SGSN Context Acknowledge); Send to former side SGSN, with thinking that this PDP Context sets up the user plane GTP tunnel between former side SGSN and the renewal side SGSN;
-for after this PDP Context set up former side SGSN and upgraded the user plane GTP tunnel between the side SGSN; Former side SGSN arrives the data forwarding of transmitting in the location management flow process and upgrades side SGSN; By upgrading side SGSN buffer memory; After position switching flow between SGSN finishes, data in buffer is issued to user terminal by upgrading side SGSN;
-renewal side SGSN is that this PDP Context is initiated PDP renewal request (Update PDPContext Request) to GGSN;
-GGSN sends receive the response (Update PDP Context Response) to upgrading side SGSN;
-upgrade side SGSN to send renewal location message (UpdateLocation) to attaching position register (HLR);
-HLR sends deletion former side SGSN location request message (Cancel Location) to former side SGSN;
-former side SGSN responds this message (Cancel Location Ack), and HLR deletes former side SGSN positional information;
-HLR obtains subscription data message (Insert Subscriber Data) to upgrading side SGSN transmission;
-upgrade side SGSN to send insertion subscription data response message (Insert Subscriber DataAck) to HLR;
After-HLR upgrades positional information, respond (Update Location Ack) to upgrading side SGSN;
-upgrade side SGSN to send position switching notification of permit (Routeing Area UpdateAccept) to user terminal;
-this user terminal is responded position handover success (Routeing Area Update Complete).
Visible from above-mentioned flow process; According to the 3GPP agreement; When not setting up GTP tunnel between former side SGSN and the GGSN for PDP Context; Even former side SGSN with acquiescence mode completion, and is carried on the imperfect information in this PDP Context in the SGSN CONTEXT RESPONSE message, is handed down to and upgrades side SGSN.Upgrade side SGSN and initiate the PDP renewal for this PDP Context through Update PDP Context Request message; GGSN also can return the UpdatePDP Context Response message of cause value for " Non-existent " (192) (PDP Context does not exist) because of finding this PDP Context according to efficient GTP-C TEID, finally can't upgrade this PDP Context of side SGSN reconstruction.Obviously, upgrade side and upgrade when successful can not making, former side has still been sent the answer message that carries PDP Context, when upgrading side for this PDP Context initiation PDP renewal, has wasted Internet resources like this.
(do not set up the tunnel when between former side SGSN and RNC, not having the user plane GTP tunnel of said PDP Context; Or the PDP Context of former side SGSN is when being in the state that Iu connect to discharge or RAB discharges); Owing to be defined as Tunnel End Point Identifier (TEID) the definition retention of GTP-U in the existing 3GPP agreement 29.060, judge between former side SGSN and the RNC/BSS whether successfully set up the GTP-U tunnel for this PDP so upgrade the GTP-U TEID (Uplink Tunnel EndpointIdentifier Data I) of the PDP Context that carries in the SGSN CONTEXTRESPONSE message that side can't send according to former side.Also can't determine whether to be this PDP Context distribution T unnel EndpointIdentifier Data II sign, with thinking that this PDP Context sets up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN (promptly can't judge whether data need through said tunnel transmission).So prior art can only directly be that this PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN after renewal side SGSN receives SGSN CONTEXT RESPONSE message.The obvious like this Internet resources of having wasted.
Prior art does not provide the rule of filling in of said GTP-U TEID retention, with so that V0 release protocol and V1 release protocol have better compatibility.
Summary of the invention
The method that the present invention provides a kind of position to switch is in order to solve the problem that there is network resources waste in prior art.
The present invention also provides a kind of service universal grouping wireless business supporting node, in order to support the inventive method.
The inventive method comprises step: former side SGSN receive upgrade that side SGSN sends obtain the request of PDP Context the time; If former side SGSN does not set up GPRS tunnel (GTP) for said PDP Context and ggsn (GGSN), then in the message of upgrading side SGSN answer, do not carrying this PDP Context;
After renewal side SGSN receives said answer message, be not that this PDP Context initiates to upgrade the PDP request to GGSN, so far flow process finishes.
Said former side SGSN receive upgrade that side SGSN sends obtain the request of PDP Context the time, if former side SGSN is for said PDP Context and GGSN have set up GTP tunnel, then in the message of renewal side SGSN answer, carrying this PDP Context; It is mutual with information in the said PDP Context and GGSN to upgrade side SGSN, accomplishes the switching of this PDP Context.
If the user uses the Iu pattern to insert; Said former side SGSN receive upgrade that side SGSN sends obtain the request of PDP Context the time; Former side SGSN judge between current itself and the radio network controller (RNC) or and base station system (BSS) between whether have the user plane GTP tunnel of said PDP Context, and judged result is carried in upgrading the message that side SGSN replys; There is said tunnel if said judged result shows, then sets up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN for this PDP Context; Otherwise, do not set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN for this PDP Context.
Said judged result is through specific first identification field that rule is filled in said answer message of filling in.
Said current former side SGSN and RNC or and BSS between do not have the situation of the user plane GTP tunnel of said PDP Context, comprising: former side SGSN does not set up the user plane GTP tunnel with RNC; And former side SGSN and RNC or the user plane GTP tunnel set up with BSS are through being released.
If the GTP tunnel of setting up between former side SGSN and the GGSN is the path of V0 release protocol; And former side SGSN and renewal side SGSN all support the V1 release protocol; Then current former side SGSN and RNC or and BSS between when not having the user plane GTP tunnel of said PDP Context, the whole bytes in said first identification field are changed to 0.
If the tunnel of setting up between former side SGSN and the GGSN is the path of V0 release protocol; And former side SGSN and renewal side SGSN all support the V1 release protocol; Then current former side SGSN and RNC or when having the user plane GTP tunnel with BSS; High doublet in said first identification field is changed to 0, and low doublet is changed to non-0.
When the user uses non-Iu pattern to insert; If the tunnel of setting up between former side SGSN and the GGSN is the path of V0 release protocol; And former side SGSN and renewal side SGSN all support the V1 release protocol, then the high doublet in said first identification field is changed to 0, and low doublet are changed to non-0.
Saidly in upgrading the message that side SGSN replys, do not carrying this PDP Context, and local this PDP Context that discharges of former side SGSN.
A kind of service universal grouping wireless business supporting node provided by the invention comprises:
Message generating module is in order to generate to upgrading the answer message that side service universal grouping wireless business supporting node (SGSN) sends;
Whether first judge module inserts SGSN with the Iu pattern in order to judges;
Second judge module; In order at this SGSN during as former side; Judge whether this SGSN has set up GTP tunnel with ggsn (GGSN), and inform whether said message generating module carries packet data protocol (PDP) context in the answer message that generates;
Rule module, it stores fills in rule;
The 3rd judge module is in order at this SGSN during as former side, when the protocol version of judging SGSN and the GTP tunnel of GGSN foundation is V0; Further judge; Under the Iu pattern, whether there is the user plane GTP tunnel between this SGSN and network controller (RNC) or the base station system (BSS), if not; Then inform message generating module, fill in rule with first and fill in answer message through rule module; Otherwise, inform message generating module through rule module, fill in rule with second and fill in answer message; Under non-Iu pattern, inform message generating module through rule module, fill in rule with second and fill in answer message;
Also comprise:
The 4th judge module, in order at this SGSN when upgrading side, first identification field in the answer message that identification is received fill in rule, and whether decision is that PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN in view of the above.
Said first fills in rule will reply that the whole bytes in first identification field are changed to 0 in the message; Said second fills in rule will reply that the high doublet in first identification field is changed to 0 in the message, and low doublet is changed to non-0.
Beneficial effect of the present invention is following: the inventive method through receive at former side SGSN upgrade that side SGSN sends obtain the message of PDP Context the time, judge whether former side SGSN is that this PDP Context and GGSN have set up GTP tunnel, as if not setting up GTP tunnel; Then in the answer message of upgrading the side transmission, do not carrying PDP Context; After renewal side SGSN receives and replys message like this, can't obtain PDP Context, also just can't initiate to upgrade the PDP request to GGSN for this PDP Context; Thereby avoided prior art when not setting up said tunnel; Fill in PDP Context with the acquiescence mode, and send to renewal side SGSN, make and upgrade side SGSN in the time can't successfully upgrading PDP for this PDP Context; Still initiate to upgrade the PDP request to GGSN, the problem of waste Internet resources.
The present invention further former side SGSN receive upgrade that side SGSN sends obtain the message of PDP Context the time; If the user uses the Iu pattern to insert; Judge and whether exist for the user plane GTP tunnel that this PDP Context is set up between former side SGSN and the RNC/BSS; If there is not the user plane GTP tunnel; Then use specific identification information in first identification field in said answer message, in order to inform that upgrading side SGSN does not have data to need transmission, promptly need not to set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN into this PDP Context.Avoided prior art not define correlated identities information like this, set up the problem of upgrading the user plane GTP tunnel between side SGSN and the former side SGSN for this PDP Context no matter whether there are data need transmit all.Obviously this method has been practiced thrift Internet resources.
The present invention has also stipulated; If former side SGSN is the path of V0 release protocol for the tunnel of setting up between this PDP Context and the GGSN; And when former side SGSN all supports the V1 release protocol with renewal side SGSN; In first identification field, fill in the rule of said identification information, in order to improve the compatibility between V0 version and the V1 version.
In order to support said method; The invention provides a kind of SGSN; It has added second judge module in existing SGSN; In order to during as former side, judging whether this SGSN has set up GTP tunnel with ggsn (GGSN), and inform whether said message generating module carries packet data protocol (PDP) context in the answer message that generates at this SGSN.Rule module, it stores fills in rule.The 3rd judge module is in order at this SGSN during as former side, when the protocol version of judging SGSN and the GTP tunnel of GGSN foundation is V0; Further judge; Under the Iu pattern, whether there is the user plane GTP tunnel between this SGSN and network controller (RNC) or the base station system (BSS), if not; Then inform message generating module, fill in rule with first and fill in answer message through rule module; Otherwise, inform message generating module through rule module, fill in rule with second and fill in answer message; Under non-Iu pattern, inform message generating module through rule module, fill in rule with second and fill in answer message; The 4th judge module, in order at this SGSN when upgrading side, first identification field in the answer message that identification is received fill in rule, and whether decision is that PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN in view of the above.
Description of drawings
Fig. 1 is the prior art networking diagram;
Fig. 2 is the signaling process figure of existing position switching method;
Fig. 3 is a service universal grouping wireless business supporting node structural representation of the present invention;
Fig. 4 is the inventive method flow chart of steps.
Embodiment
In order to practice thrift wireless network resource, the present invention provides a kind of universal grouping wireless business supporting node, and referring to Fig. 3, it comprises:
Service universal grouping wireless business supporting node (SGSN), portion comprises within it: the 4th judge module; Serial connection is the message generating module of ring-type, second judge module, the 3rd judge module and rule module successively; Said the 3rd judge module also links to each other with first judge module.
Said SGSN is in order to accomplish the function that existing SGSN is had.
Said message generating module is in order to generate to upgrading the answer message that side service universal grouping wireless business supporting node (SGSN) sends.
Whether said first judge module inserts SGSN with the Iu pattern in order to judges.
Said second judge module; In order at this SGSN during as former side; Judge whether this SGSN has set up GTP tunnel with ggsn (GGSN), and inform whether said message generating module carries packet data protocol (PDP) context in the answer message that generates.
Said rule module, it stores fills in rule.
Said the 3rd judge module, in order at this SGSN during as former side, when the protocol version of judging the GTP tunnel that SGSN and GGSN set up is V0, further judgement,
Under the Iu pattern, whether there is the user plane GTP tunnel between this SGSN and network controller (RNC) or the base station system (BSS), if not, then inform message generating module through rule module, fill in rule with first and fill in answer message; Otherwise, inform message generating module through rule module, fill in rule with second and fill in answer message;
Under non-Iu pattern, inform message generating module through rule module, fill in rule with second and fill in answer message;
Said first fills in rule will reply that the whole bytes in first identification field are changed to 0 in the message;
Said second fills in rule will reply that the high doublet in first identification field is changed to 0 in the message, and low doublet is changed to non-0.
Said the 4th judge module, in order at this SGSN when upgrading side, first identification field in the answer message that identification is received fill in rule, and whether decision is that PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN in view of the above.
Based on above-mentioned service universal grouping wireless business supporting node, the method that the present invention provides a kind of position to switch is applied to PDP Context and between SGSN, switches.Referring to shown in Figure 4, the present invention includes the following step:
S1, user terminal are initiated the position switching flow.
S2, upgrade the Routing Area Update request message that side SGSN receives that the user sends after, send to former side SGSN and to obtain the contextual request message of SGSN.
S3, former side SGSN utilize second judge module to judge whether it is that said PDP Context and GGSN have set up GTP tunnel; If; Inform that then message generating module adds PDP Context in the message of replying, otherwise in said answer message, do not add PDP Context.
S4, whether insert SGSN with the first judge module judges, if then change step S5 over to the Iu pattern; Otherwise, when the 3rd judge module judges that GTP tunnel between former side SGSN and the GGSN is the V0 protocol version, fill in rule through rule module with second and in first identification field of replying message, fill in relevant information, and change step S6 over to.
When S5, former side SGSN utilize the 3rd judge module to judge that GTP tunnel between former side SGSN and the GGSN is for the V0 protocol version; Further utilize the 3rd judge module to judge whether it exists for the user plane GTP tunnel that said PDP Context is set up with RNC/BSS; If not; Then inform that through rule module message generating module fills in rule with first and fill in the relevant information in first identification field of replying in the message; Do not exist for the user plane GTP tunnel that said PDP Context is set up in order to show, promptly do not have data to need transmission with RNC or with BSS;
If then inform that through rule module message generating module fills in rule with second and fill in the relevant information in first identification field of replying in the message.
The answer message that S6, former side SGSN generate message generating module sends to upgrades side SGSN.
S7, upgrading side SGSN and utilize the 4th judge module to be identified in the rule of filling in of information in first identification field, if first fill in rule, then be that said PDP Context is set up the user plane GTP tunnel between renewal side SGSN and the former side SGSN;
If second fills in rule; Then be that said PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN; Arrive renewal side SGSN in order to the data forwarding of transmitting in the position switching flow with former side SGSN; And, after the position switching flow between SGSN finishes, be responsible for the data cached user terminal that is issued to by upgrading side SGSN by upgrading side SGSN buffer memory.
S8, renewal side SGSN judge in the said answer message whether have PDP Context, if exist, then are that said PDP Context is asked to GGSN initiation PDP renewal, and flow process is identical with prior art afterwards;
Otherwise upgrading side SGSN is not that said PDP Context is initiated PDP renewal request to GGSN, and so far flow process finishes.
Below specifically describe the inventive method through three instances.
Instance one: former side SGSN is that said PDP Context and GGSN have set up GTP tunnel, but based on the Iu pattern do not exist and RNC between the user plane GTP tunnel of setting up for said PDP Context.
S101, user terminal are initiated the position switching flow.
The user possibly switched between different BSS or RNC in the process that moves, if new and old BSS/RNC belongs to different SGSN, then need user's PDP Context be moved to from former side SGSN through the location management flow process between SGSN and upgrade side SGSN.
S102, upgrade the Routing Area Update request message that side SGSN receives that the user sends after, send to former side SGSN and to obtain the contextual request message of SGSN (comprising PDP Context).
S103, former side SGSN utilize second judge module to judge it and have set up GTP tunnel for said PDP Context and GGSN, and inform that message generating module adds PDP Context in the message of answer.
Include in the said PDP Context: GGSN distributes to chain of command (GTP-C) Tunnel End Point Identifier (TEID) and user plane (GTP-U) TEID of former side SGSN for this PDP Context.Said GTP-C TEID is called as Uplink Tunnel Endpoint Identifier Control Plane in agreement; GTP-U TEID is called as Uplink Tunnel Endpoint Identifier Data I, i.e. first identification field.
S104, warp judge it is to insert SGSN with the Iu pattern.
Different wireless access networks uses different interface protocols to be connected with SGSN, and BSS or RNC are connected to SGSN through the Iu interface and are called as the Iu pattern.
S105, former side SGSN utilize the 3rd judge module to judge between itself and the RNC and do not exist for the user plane GTP tunnel that said PDP Context is set up; And judge when the tunnel of setting up for said PDP Context between former side SGSN and the GGSN is the path of V0 release protocol; Then inform that through rule module message generating module fills in rule with first and fill in first identification field of replying in the message, in order to inform that upgrading side SGSN need not to set up the user plane GTP tunnel between itself and the former side SGSN for said PDP Context.
The inventive method has been expanded 3GPP agreement 29.060, and definition " 0 " is the retention of GTP-U TEID, when promptly between former side SGSN and RNC, not existing for the user plane GTP tunnel of said PDP Context foundation, in order to be filled up in said first identification field.
Do not exist the user plane tunnel to comprise following situation between above-mentioned former side SGSN and the RNC:
Former side SGSN and RNC have set up the user plane tunnel through Iu interface or RAB (RAB), but do not have transfer of data in the certain hour, and this tunnel is released;
Former side SGSN does not set up the user plane GTP tunnel for said PDP Context and RNC.
Situation to the user plane GTP tunnel that does not exist for said PDP Context foundation between above-mentioned two kinds of former side SGSN and the RNC; Under the Iu pattern; If the tunnel of setting up for said PDP Context between former side SGSN and the GGSN is the path of V0 release protocol; And former side SGSN and renewal side SGSN all support the V1 release protocol, then fill in rule according to first the whole bytes in said first identification field are changed to 0.(BSS can replace with above-mentioned RNC)
The answer message that S106, former side SGSN generate message generating module sends to upgrades side SGSN.
S107, upgrade that side SGSN utilizes that the 4th judge module discerns information in first identification field fill in rule (being 0 entirely); It then is not Tunnel Endpoint IdentifierData II sign given in this PDP Context distributorship agreement; In the response message (SGSN ContextAcknowledge) that former side SGSN sends, will not contain Tunnel Endpoint Identifier Data II sign at renewal side SGSN afterwards, so will not be that said PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN.
S108, upgrade side SGSN and judge in the said answer message and have PDP Context, then be said PDP Context initiate PDP to GGSN upgrades and asks;
GGSN is receiveed the response to upgrading side SGSN transmission;
Upgrade side SGSN and send the renewal location message to attaching position register (HLR);
HLR sends the former side SGSN location request message of deletion to former side SGSN;
Former side SGSN responds this message, and HLR deletes former side SGSN positional information;
HLR obtains location message to upgrading side SGSN transmission;
Upgrade side SGSN and send positional information to HLR;
After HLR upgrades positional information, respond to upgrading side SGSN;
Upgrade side SGSN and send position switching notification of permit to user terminal;
This user terminal is responded the position handover success.
Instance two: former side SGSN is not for said PDP Context and GGSN set up GTP tunnel, and former side SGSN has set up the user plane GTP tunnel between said PDP Context and the RNC.
S201, user terminal are initiated the position switching flow.
The user possibly switched between different BSS or RNC in the process that moves, if new and old BSS/RNC belongs to different SGSN, then need user's PDP Context be moved to from former side SGSN through the location management flow process between SGSN and upgrade side SGSN.
S202, upgrade the Routing Area Update request message that side SGSN receives that the user sends after, send to former side SGSN and to obtain the contextual request message of SGSN (comprising PDP Context).
S203, former side SGSN utilize second judge module to judge it not for said PDP Context and GGSN set up GTP tunnel, and inform that message generating module do not carry PDP Context in the message of answer.
Include in the said PDP Context: GGSN distributes to chain of command (GTP-C) Tunnel End Point Identifier (TEID) and user plane (GTP-U) TEID of former side SGSN for this PDP Context.Said GTP-C TEID is called as Uplink Tunnel Endpoint Identifier Control Plane in agreement; GTP-U TEID is called as Uplink Tunnel Endpoint Identifier Data I, i.e. first identification field.
Only between former side SGSN and GGSN, set up said GTP-C and GTP-U (promptly having set up the tunnel) simultaneously, complete information has just been arranged in this PDP Context.Complete information in the position switching flow just effective.So when the present invention does not set up the tunnel between former side SGSN and GGSN, do not send this PDP Context to upgrading side SGSN.
S204, upgrade side SGSN and judge in the said answer message and do not have PDP Context, then be said PDP Context initiate PDP to GGSN upgrades and asks.So far switching flow finishes (do not set up the tunnel between this routine former side SGSN and the GGSN, upgrade side SGSN so can't switch to).
Instance three: former side SGSN is that said PDP Context and GGSN have set up GTP tunnel, based on the Iu pattern exist and RNC between be the user plane GTP tunnel of said PDP Context foundation.
S301, user terminal are initiated the position switching flow.
The user possibly switched between different BSS or RNC in the process that moves, if new and old BSS/RNC belongs to different SGSN, then need user's PDP Context be moved to from former side SGSN through the location management flow process between SGSN and upgrade side SGSN.
S302, upgrade the Routing Area Update request message that side SGSN receives that the user sends after, send to former side SGSN and to obtain the contextual request message of SGSN (comprising PDP Context).
S303, former side SGSN utilize second judge module to judge it and have set up GTP tunnel for said PDP Context and GGSN, and inform that message generating module adds PDP Context in the message of answer.
Include in the said PDP Context: GGSN distributes to chain of command (GTP-C) Tunnel End Point Identifier (TEID) and user plane (GTP-U) TEID of former side SGSN for this PDP Context.Said GTP-C TEID is called as Uplink Tunnel Endpoint Identifier Control Plane in agreement; GTP-U TEID is called as Uplink Tunnel Endpoint Identifier Data I, i.e. first identification field.
S304, warp judge it is to insert SGSN with the Iu pattern.
Different wireless access networks uses different interface protocols to be connected with SGSN, and BSS or RNC are connected to SGSN through the Iu interface and are called as the Iu pattern.
S305, former side SGSN utilize the 3rd judge module to judge between itself and the RNC and exist for the user plane GTP tunnel that said PDP Context is set up; And judge when the tunnel of setting up for said PDP Context between former side SGSN and the GGSN is the path of V0 release protocol; Then inform that through rule module message generating module fills in rule with second and fill in first identification field of replying in the message, in order to inform that upgrading side SGSN need set up the user plane GTP tunnel between itself and the former side SGSN for said PDP Context.
Said second to fill in rule be the path of V0 release protocol for tunnel that said PDP Context is set up between former side SGSN and GGSN; And when former side SGSN all supports the V1 release protocol with renewal side SGSN; Under the Iu pattern, the high doublet in said first identification field is changed to 0; Upstream data surface current sign (Flow Label Data I) is inserted into low two bytes of first identification field.(BSS can replace with above-mentioned RNC)
The answer message that S306, former side SGSN generate message generating module sends to upgrades side SGSN.
S307, upgrade side SGSN utilize the 4th judge module to discern the rule of filling in of information in first identification field (high two is 0; Low two is not 0); It then is TunnelEndpoint Identifier Data II sign given in this PDP Context distributorship agreement; In the response message (SGSN Context Acknowledge) that former side SGSN sends, contain Tunnel Endpoint Identifier Data II sign at renewal side SGSN afterwards, so will be that said PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN.
S308, upgrade side SGSN and judge in the said answer message and have PDP Context, then be said PDP Context initiate PDP to GGSN upgrades and asks;
GGSN is receiveed the response to upgrading side SGSN transmission;
Upgrade side SGSN and send the renewal location message to attaching position register (HLR);
HLR sends the former side SGSN location request message of deletion to former side SGSN;
Former side SGSN responds this message, and HLR deletes former side SGSN positional information;
HLR obtains location message to upgrading side SGSN transmission;
Upgrade side SGSN and send positional information to HLR;
After HLR upgrades positional information, respond to upgrading side SGSN;
Upgrade side SGSN and send position switching notification of permit to user terminal;
This user terminal is responded the position handover success.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. the method that switch the position is applied to the packet data protocol PDP Context and between service universal grouping wireless business supporting node SGSN, switches, and it is characterized in that, comprises the following steps:
Former side SGSN receive upgrade that side SGSN sends obtain the request of PDP Context the time; If former side SGSN is not for said PDP Context and ggsn GGSN set up GPRS tunnel GTP, then in the answer message of upgrading side SGSN transmission, do not carrying this PDP Context;
After renewal side SGSN receives said answer message, be not that this PDP Context initiates to upgrade the PDP request to GGSN, so far flow process finishes.
2. the method for claim 1; It is characterized in that; Said former side SGSN receive upgrade that side SGSN sends obtain the request of PDP Context the time; If former side SGSN is for said PDP Context and GGSN have set up GTP tunnel, then in the answer message of upgrading side SGSN transmission, carrying this PDP Context;
It is mutual with information in the said PDP Context and GGSN to upgrade side SGSN, accomplishes the switching of this PDP Context.
3. according to claim 1 or claim 2 method; It is characterized in that; If the user uses the Iu pattern to insert; Said former side SGSN receive upgrade that side SGSN sends obtain the request of PDP Context the time, former side SGSN judge between current itself and the radio network controller (RNC) or and base station system BSS between whether have the user plane GTP tunnel of said PDP Context, and judged result is carried in the answer message of upgrading side SGSN transmission;
There is said tunnel if said judged result shows, then sets up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN for this PDP Context;
Otherwise, do not set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN for this PDP Context.
4. method as claimed in claim 3 is characterized in that, said judged result is through specific first identification field that rule is filled in said answer message of filling in.
5. method as claimed in claim 4 is characterized in that, said former side SGSN and RNC or and BSS between do not have the situation of the user plane GTP tunnel of said PDP Context, comprising:
Former side SGSN does not set up the user plane GTP tunnel with RNC; And
Former side SGSN and RNC or be released with user plane GTP tunnel that BSS sets up.
6. method as claimed in claim 5; It is characterized in that; If the GTP tunnel of setting up between former side SGSN and the GGSN is the path of V0 release protocol; And former side SGSN with upgrade side SGSN and all support the V1 release protocol, then former side SGSN and RNC or and BSS between when not having the user plane GTP tunnel of said PDP Context, the whole bytes in said first identification field are changed to 0.
7. method as claimed in claim 6; It is characterized in that; If the tunnel of setting up between former side SGSN and the GGSN is the path of V0 release protocol, and former side SGSN with upgrade side SGSN and all support the V1 release protocol, then former side SGSN and RNC or when having the user plane GTP tunnel with BSS; High doublet in said first identification field is changed to 0, and low doublet is changed to non-0.
8. method as claimed in claim 4; It is characterized in that; When the user used non-Iu pattern to insert, if the tunnel of setting up between former side SGSN and the GGSN is the path of V0 release protocol, and former side SGSN all supported the V1 release protocol with renewal side SGSN; Then the high doublet in said first identification field is changed to 0, and low doublet is changed to non-0.
9. the method for claim 1 is characterized in that, in upgrading side SGSN answer message, is not carrying this PDP Context, and local this PDP Context that discharges of former side SGSN.
10. service universal grouping wireless business supporting node comprises:
Message generating module is in order to generate to upgrading the answer message that side service universal grouping wireless business supporting node SGSN sends;
Whether first judge module inserts SGSN with the Iu pattern in order to judges;
It is characterized in that, also comprise:
Second judge module; Link to each other with said message generating module; In order at this SGSN during as former side; Judge whether this SGSN has set up GTP tunnel with ggsn GGSN, and inform whether said message generating module carries the packet data protocol PDP Context in the answer message that generates;
Rule module, it stores fills in rule;
The 3rd judge module, in order at this SGSN during as former side, when the protocol version of judging the GTP tunnel that SGSN and GGSN set up is V0, further judgement,
Under the Iu pattern, whether there is the user plane GTP tunnel between this SGSN and network controller RNC or the base station system BSS, if not, then inform message generating module through rule module, fill in rule with first and fill in answer message; Otherwise, inform message generating module through rule module, fill in rule with second and fill in answer message;
Under non-Iu pattern, inform message generating module through rule module, fill in rule with second and fill in answer message;
The 4th judge module, in order at this SGSN when upgrading side, first identification field in the answer message that identification is received fill in rule, and whether decision is that PDP Context is set up the user plane GTP tunnel that upgrades between side SGSN and the former side SGSN in view of the above.
11. service universal grouping wireless business supporting node as claimed in claim 10 is characterized in that, said first fills in rule will reply that the whole bytes in first identification field are changed to 0 in the message;
Said second fills in rule will reply that the high doublet in first identification field is changed to 0 in the message, and low doublet is changed to non-0.
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| CN101370001B (en) | 2007-08-15 | 2011-01-05 | 华为技术有限公司 | Information transfer method |
| CN101552959B (en) * | 2008-04-02 | 2011-01-05 | 大唐移动通信设备有限公司 | Method, device and system of data acquisition in attachment process |
| CN101909338B (en) * | 2009-06-03 | 2012-05-23 | 中兴通讯股份有限公司 | Terminal identification acquisition method between base stations and terminal identification method |
| CN101990174B (en) * | 2009-07-29 | 2016-06-15 | 中兴通讯股份有限公司 | Message method and GPRS serving GPRS support node |
| CN102123463B (en) * | 2010-01-12 | 2013-01-16 | 中兴通讯股份有限公司 | Wideband code division multiple access (WCDMA) core network and WCDMA core network-based switching method |
| WO2013091163A1 (en) * | 2011-12-19 | 2013-06-27 | 华为技术有限公司 | Method and device for controlling delivery of packet data protocol context |
| US10728952B2 (en) | 2017-01-09 | 2020-07-28 | Huawei Technologies Co., Ltd. | System and methods for session management |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1434612A (en) * | 2002-01-23 | 2003-08-06 | 华为技术有限公司 | Method for realizing grouping business from single information source to multiple receive point |
| CN1595863A (en) * | 2003-09-13 | 2005-03-16 | 华为技术有限公司 | Method for supporting location update between nodes by GPRS service |
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| CN1434612A (en) * | 2002-01-23 | 2003-08-06 | 华为技术有限公司 | Method for realizing grouping business from single information source to multiple receive point |
| CN1595863A (en) * | 2003-09-13 | 2005-03-16 | 华为技术有限公司 | Method for supporting location update between nodes by GPRS service |
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