CN100479422C - Universal block radio business service support internodal routing zone renewal method - Google Patents
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Abstract
A method for refreshing route region between support nodes of general packet radio service includes judging GTP path version between original SGSN and GGSN first when SGSN context request message of new SGSN is received by original SGSN , inserting relevant identification into SGSN context response message to be returned back then judging version number of GTP channel between original SGSN and GGSN according to inserted identification by new SGSN when VO version is applied between them , filing relevant information in refreshing PDP context request message being sent to GGSN if version number is GTPvo .
Description
Technical field
The present invention relates to mobile communication technology, particularly Routing Area Update technology between GPRS serving GPRS support node (Serving GPRS Support Node is called for short " SGSN ").
Background technology
Along with mobile communication technology and Internet protocol (Internet Protocol, abbreviation " IP ") the continuous development of technology, mobile radio communication is from traditional circuit switching global system for mobile communications (GlobalSystem for Mobile Communications, abbreviation " GSM ") develops into GPRS (the General Packet Radio Service that nowadays supports packet switching service, be called for short " GPRS ") network, and constantly to the 3G (Third Generation) Moblie network development, thereby satisfy the ever-increasing business demand of user.Mobile communication has become inalienable part in people's daily life more and more, each is runed the commercial city and develops with all strength and provide complete solution, guarantee communication system stable operation, good data in mobile phone business is provided, the system of highly compatible is provided simultaneously, realize professional level and smooth harmless switching at different vendor's equipment room, each producer all makes great efforts to be desirably in the market that enlarges day by day and occupies greater share.
Inter-SGSN routing area update is the basic service flow process in GPRS and the 3G system, refer to that the user is in communication process, the series of processes process that breaks away from the relevant device that causes when current service route district enters the route district that new SGSN administered is mainly finished by mobile management and the equipment cooperations such as session management two big functional modules and GGSN, HLR of SGSN.
Owing to carry out to relate in the process of Routing Area Update that the R97/R99 conversion of service quality, the V1/V0 of GTP passage version are switched etc., thereby cause Business Processing to take place to interrupt or service quality (Quality of Service, be called for short " QoS ") can not seamlessly transit, therefore need to adopt clear and definite various strategies that the Routing Area Update process under each situation is controlled.
During the Routing Area Update of prior art under handling a certain particular condition, there is the imperfection part.The regulation of agreement 23.060 " When a GTPv0 tunnel was established between the oldSGSN and the GGSN; and both old and new SGSNs support GTPv1, therespective uplink Flow Label signalling shall be inserted in the tow lower octetsof the Uplink TEID Control Plane field of the SGSN Context Response message; The upper two octets shall be set to all zeros. " (Chinese is: the old and new SGSN supports GTP V1 passage; what set up between old SGSN and GGSN is GTP V0 passage; the sign of this GTP V0 signaling plane passage that GGSN distributes is " Uplink Flow Label signaling "; in this case; old SGSN is when new SGSN beams back the SGSN context response information; the value of two low eight bit bytes of " UplinkTEID Control Plane " wherein (being called for short " TEID CTRL ") field is set to above-mentioned " the Uplink Flow Label signalling " that mentions, and two high eight-bit bytes of this field are set to 0.)
The new SGSN of regulation sends the " related request that the content of renewal PDP Context request information is filled in: " The NSAPI information element together with theTunnel Endpoint Identifier in the GTP header unambiguously identifies a PDPContext in the GGSN. to GGSN in the agreement 29.060
The IMSI shall be included if the message is sent during an Inter SGSNchange when changing the GTP version from GTP v0 to GTP v1; This is required, as the TEID in the header of the message is set to all zeros in this case. " (Chinese implication is: " Tunnel Endpoint Identifier " (being called for short " TEID ") in network layer Service Access Point Indicator (Network Layer Service Access PointIdentifier is called for short " NSAPI ") information element and the GTP head, clearly identified a PDP Context among the GGSN.
If GTP passage version from GTPv0 switch to GTPv1 (be GGSN by and old SGSN between be GTP V0 passage switch to and new SGSN between the V1 passage), in this case, the TEID of new SGSN in the message header of the renewal PDP Context request message that GGSN sends is set to complete 0, like this, need to comprise this information element of IMSI in the message, so that can identify a PDP Context among the GGSN by IMSI and NSAPI.)
Fig. 1 is the structural representation that Routing Area Update is handled under the above-mentioned this scene.The old and new SGSN and the GGSN of service MS all support GTP V1, but what set up between old SGSN and GGSN is the GTP passage of V0 version, and what between new SGSN and the old SGSN and newly set up between SGSN and the GGSN all is GTP passages of V1 version.
As shown in the figure, MS 31 originally was connected to SGSN 30 through BSS 38, when its position changes, will be connected to SGSN 33 through BSS 32; 33 of SGSN 30 and SGSN set up the GTP passage of V1 version, 34 foundation of SGSN 33 and GGSN also be the GTP passage of V1 version, SGSN 30 and 34 foundation of GGSN be the GTP passage of V0 version.
The people of skilled knows, when Routing Area Update shown in Figure 1 takes place in MS, SGSN33 at first can send the SGSN context request message to SGSN 30, SGSN 30 handles after receiving this message, according to the existing content of above-mentioned agreement, if SGSN 30 and 34 foundation of GGSN is the GTP passage of V0 version, two low eight bit bytes that then at first with " the Uplink Flow Labelsignalling " message conversion of preserving among the SGSN 30 are " TEID CTRL " field are inserted the SGSN context response information, and two high eight-bit bytes of " TEID CTRL " are set to 0.Through after the above-mentioned processing, construct complete SGSN context response information and send it to SGSN 33.
After SGSN 33 receives the SGSN context response information of SGSN 30 transmissions, send and upgrade the PDP Context request message to GGSN 34, if SGSN 30 and 34 foundation of GGSN is the GTPV0 passage, therefore need TEID when sending this message be set to entirely 0, be with IMSI simultaneously; If SGSN 30 and 34 foundation of GGSN is GTP V1 passage, then if in the message that sends with on the TEID and the NSAPI field of taking out in the SGSN context response information.
In actual applications, there is following problem in such scheme: because when normal the use, if what set up between SGSN30 and the GGSN 34 is GTP V1 passage, two high eight-bit bytes of " TEID CTRL " that return to the SGSN context response information of SGSN 33 this moment also might be 0, therefore SGSN can not judge old SGSN and the GTP passage version number between GGSN according to this field, thereby also just can't cause easily and upgrade the PDP failure between new SGSN and the GGSN according to the accurate form that encapsulates the renewal PDP request message that send to GGSN of its value.
Cause the main cause of this situation to be, in the regulation of above-mentioned agreement, do not represent clearly that how new SGSN is by determine the GTP channel information between former SGSN and the GGSN from the SGSN context response information of former SGSN.Specifically, in the SGSN context response information that SGSN 30 returns, only GTPv0 " Uplink Flow Label signalling " field is converted to effectively " TEID CTRL ", the version number that does not have the GTP passage of clear and definite SGSN 30 and GGSN 34 with which kind of sign represents on earth, therefore when SGSN 33 receives the SGSN context response information, can not obtain GTP passage version number between SGSN 30 and the GGSN 34 according to this message, thereby also just can't when transmission renewal PDP Context request message, treat with a certain discrimination different GTP passage version number.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of universal block radio business service support internodal routing zone renewal method, make new SGSN to judge employed GTP passage version number between former SGSN and GGSN according to the return messages of former SGSN, thereby effectively finish the renewal in route district between SGSN, improve the success rate that connects.
For achieving the above object, the invention provides a kind of universal block radio business service support internodal routing zone renewal method, described Routing Area Update relates to gateway GPRS supporting node (GGSN), the first and second GPRS serving GPRS support nodes of supporting wireless universal packet service tunneling protocol version 1, and be routed to the described second GPRS serving GPRS support node by the described first GPRS serving GPRS support node, described method comprises following steps:
When A receives GPRS serving GPRS support node context request message from the described second GPRS serving GPRS support node when the described first GPRS serving GPRS support node, judge whether the wireless universal packet service tunnel protocol passage version number between described first GPRS serving GPRS support node and the described gateway GPRS supporting node (GGSN) is V0, if, execution in step B then;
The described first GPRS serving GPRS support node of B is to described second GPRS serving GPRS support node feedback GPRS serving GPRS support node context response information, wherein, be provided with in this message and be used to represent that the tunnel protocol passage version number that sets up between the first GPRS serving GPRS support node and the described gateway GPRS supporting node (GGSN) is 0 sign;
The described second GPRS serving GPRS support node of C judges whether comprise described sign in the described response message, if, be the form of V0 according to the tunnel protocol passage version number that sets up between the first packet wireless business serving GPRS support node and the gateway GPRS supporting node (GGSN) then, structure is sent to the update packet data protocol contexts request message of described gateway GPRS supporting node (GGSN).
Wherein, described sign is " the TEID DATA I " field that is set to invalid value, described invalid value can be 0 or 0xFFFFFFFF, and " TEID CTRL " field in the described response message is converted by " uplink Flow Label signalling " field of wireless universal packet service tunnel protocol passage between described first GPRS serving GPRS support node and the gateway GPRS supporting node (GGSN).
Perhaps, described sign is " TEID CTRL " field that is set to invalid value.
Described invalid value can be 0 or 0xFFFFFFFF.
In described step C, if comprise described sign in the described response message, then in being sent to the renewal context request message of described gateway GPRS supporting node (GGSN), " TEIDCTRL " field in the message header being filled out to complete 0, and be with international mobile station identity number.
In described steps A, if the wireless universal packet service tunnel protocol passage version number between described first GPRS serving GPRS support node and the described gateway GPRS supporting node (GGSN) is not V0, the then described first GPRS serving GPRS support node is to described second GPRS serving GPRS support node feedback GPRS serving GPRS support node context response information, wherein, according to wireless universal packet service tunnel protocol channel information between described first GPRS serving GPRS support node and the gateway GPRS supporting node (GGSN), in the corresponding domain of described response message, insert corresponding " TEID CTRL " field and " TEID DATA I " field.
If among the described step C, judge not comprise described sign in the described response message, then " TEID CTRL " field contents in the described GPRS serving GPRS support node context response information is inserted the respective field in the message header of the update packet data protocol contexts request message that is sent to described gateway GPRS supporting node (GGSN).
By relatively finding, technical scheme difference with the prior art of the present invention is, after the present invention receives the SGSN context request message of new SGSN at former SGSN, at first the GTP path release between former SGSN and the GGSN is judged, when adopting the V0 version between them, insert the SGSN context response information that to return with identifying accordingly, judge GTP passage version number between former SGSN and GGSN by new SGSN according to corresponding sign in this message then, if be judged to be GTPv0, then in will sending to the renewal PDP Context request message of GGSN, insert corresponding information.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly because by improving the SGSN context response information and upgrading the PDP Context request message, guarantee that effectively new SGSN can correctly test to GTP passage version number between former SGSN and GGSN, thereby avoid the prior art scheme owing to imperfection causes guaranteeing the equipment interconnection case of successful.
Description of drawings
Fig. 1 is that the old and new SGSN and GGSN all support GTP V1 passage, but set up between old SGSN and GGSN be GTP V0 passage the time, the processing structural representation of Routing Area Update;
Fig. 2 is a former SGSN side handling process schematic diagram of realizing inter-SGSN routing area update according to one embodiment of the invention;
Fig. 3 is a new SGSN side handling process schematic diagram of realizing inter-SGSN routing area update according to one embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
In order to make new SGSN judge employed GTP passage version number between former SGSN and GGSN according to the return messages of former SGSN, the information that just need in the return messages of former SGSN, comprise sign GTP passage version number, the present invention is by being provided with a specific fields in the SGSN context response information as the mark of GTP passage version number, new SGSN judges according to the value of this field, thereby finishes respective handling.
In concrete use, the present invention revises some regulation in the above-mentioned agreement.In one embodiment, as follows to the change of 23.060 agreements: (Chinese is translated into temporarily: the GTP passage version number that " TEID DATAI " is set between 0 former SGSN of expression and GGSN is V0 adding " The UplinkTunnel Endpoint Identifier Data I keeps zero to hint.that the GTP tunnel versionbetween the old SGSN and the GGSN is v0. " after former 23.060 agreements.) 29.060 agreements are not then changed.In another embodiment, (Chinese is translated into temporarily: the GTP passage version number that " TEID CTRL " is set between 0 former SGSN of expression and GGSN is V0 adding " The UplinkTEID Control Plane field keeps zero to hint that the GTP tunnel version betweenthe old SGSN and the GGSN is v0. " after former 23.060 agreements.), equally 29.060 agreements are not then changed.
Below in conjunction with Fig. 2, describe the former SGSN side handling process schematic diagram of realizing inter-SGSN routing area update according to one embodiment of the invention in detail, as shown in the figure.
At first enter step 410, former SGSN receives the SGSN context request message that the SGSN that makes a fresh start sends over.Those of ordinary skill in the art will be appreciated that, the SGSN context request message should comprise old Routing Area Identifier (the Routing Area Identity that is used to represent information of mobile user, abbreviation " RAI "), TLLI (Temporary Logic Link Identity, abbreviation " TLLI "), the address of old packet TMSI (Packet Temporary Mobile Subscriber Identity is called for short " P-TMSI ") signature and new SGSN.
Enter step 420 then, judge the GTP passage version of setting up between old SGSN and GGSN.If the GTP passage of setting up between former SGSN and GGSN is V1, then enter step 430; If the GTP passage of setting up between former SGSN and GGSN is V0, then enter step 440.
In step 430, because what set up between former SGSN and GGSN is the GTPv1 passage, " the TEID CTRL " in the PDP Context and " TEID DATA I " field directly deposit the respective field of SGSN context response information among the former SGSN so only need to be stored in.
Then enter step 450, the GTP passage version number sign between former SGSN and the GGSN is set." TEID DATA I " field in the present invention can PDP Context is set to certain specific value, and for the sake of simplicity, this value is set to entirely 0 usually, this field is inserted the respective field of SGSN context response information after setting is finished.Also can use simultaneously the sign of " TEID CTRL " field of PDP Context as GTP passage version number between former SGSN and GGSN, need not execution in step 440 this moment, and directly " TEID CTRL " can be set to certain invalid value, invalid value does not clearly define in the existing protocol standard, for the sake of simplicity, suggestion here is with the 0 conduct value of special use in such cases.
It enters step 460 then, constructs complete SGSN context response information, and this message is sent to new SGSN, so that can realize the mobile management to MS.
In step 470, former SGSN waits for and receives " SGSN Context ACK " message, judges whether message sends success.
Fig. 3 is a new SGSN side process chart of realizing inter-SGSN routing area update according to an embodiment of the invention, as shown in the figure.
At first enter step 510, new SGSN receives Routing Area Update (Routing AreaUpdate is called for short " the RAU ") request message that MS sends.Those of ordinary skill in the art should be understood that this request message should comprise the old RAI of this user's mobile device, old P-TMSI signature and updating type.Described updating type can be the Routing Area Update or the periodic Routing Area Update of user's appointment.
Enter step 520 then, new SGSN sends the SGSN context request message to former SGSN, so that can be stored in the PDP Context among the former SGSN according to the feedback message acquisition MS of former SGSN, realizes the mobile management to this equipment.
Then enter step 530, new SGSN carries out after sending the SGSN context request message and waits for operation, till the SGSN context response information that receives from former SGSN.The information that should include by foregoing description as can be known, GTP passage version number between former SGSN of sign and the GGSN in the SGSN context response information.
In step 540, new SGSN extracts in the SGSN context response information between the former SGSN of expression and GGSN the information of GTP passage version number and judges.If adopt " TEID DATA I " judgement symbol as GTP passage version number, then can compare with predefined value, if " TEIDDATA I " is predefined value, for example predefined value is 0, if judged result is not 0, represent that then the passage version number that sets up between former SGSN and the GGSN is V1, enter step 550; If judged result is 0, represent that then the GTP passage version number that sets up between former SGSN and the GGSN is V0, then enter step 560.If adopt the mode of another sign GTP passage version number of describing in the step 450, only need judge then whether " TEID CTRL " is original invalid value of setting, if show that then GTP passage version number is V0, if not, show that then GTP passage version number is V1.
In step 550, according to agreement 29.060, " the TEID CTRL " that upgrades in the message header of PDP Context request message is set to 0, simultaneously in message with on the IMSI of user's mobile device.
In step 560, extract the value of " TEID CTRL " field in the SGSN context response information, and it is write the respective byte of upgrading PDP Context request message head.
After finishing above-mentioned processing, then enter step 570, construct complete renewal PDP Context request message, and send it to GGSN, finish the renewal of PDP Context among the whole GGSN.Those of ordinary skill in the art will be appreciated that, above-mentioned renewal PDP Context request message should comprise address, the down going channel mark number (downlink Tunnel Endpoint Identifier) of new SGSN, the service quality of consulting information such as (Quality of Service are called for short " QoS ").
Whether in step 580, new SGSN waits for the inverse signal of GGSN, judge to upgrade and finish.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (8)
1. universal block radio business service support internodal routing zone renewal method, described Routing Area Update relates to gateway GPRS supporting node (GGSN), the first and second GPRS serving GPRS support nodes of supporting wireless universal packet service tunneling protocol version 1, and be routed to the described second GPRS serving GPRS support node by the described first GPRS serving GPRS support node, it is characterized in that described method comprises following steps:
When A receives GPRS serving GPRS support node context request message from the described second GPRS serving GPRS support node when the described first GPRS serving GPRS support node, judge whether the wireless universal packet service tunnel protocol passage version number between described first GPRS serving GPRS support node and the described gateway GPRS supporting node (GGSN) is V0, if, execution in step B then;
The described first GPRS serving GPRS support node of B is to described second GPRS serving GPRS support node feedback GPRS serving GPRS support node context response information, wherein, be provided with in this message and be used to represent that the tunnel protocol passage version number that sets up between the first GPRS serving GPRS support node and the described gateway GPRS supporting node (GGSN) is the sign of V0;
The described second GPRS serving GPRS support node of C judges whether comprise described sign in the described response message, if, be the form of V0 according to the tunnel protocol passage version number that sets up between the first packet wireless business serving GPRS support node and the gateway GPRS supporting node (GGSN) then, structure is sent to the update packet data protocol contexts request message of described gateway GPRS supporting node (GGSN).
2. universal block radio business service support internodal routing zone renewal method according to claim 1, it is characterized in that, described sign is " the TEID DATA I " field that is set to invalid value, and " TEID CTRL " field in the described response message is converted by " FLOW LABEL SIGNALLING " field of wireless universal packet service tunnel protocol passage between described first GPRS serving GPRS support node and the gateway GPRS supporting node (GGSN).
3. universal block radio business service support internodal routing zone renewal method according to claim 2 is characterized in that, described invalid value is 0 or 0xFFFFFFFF.
4. universal block radio business service support internodal routing zone renewal method according to claim 1 is characterized in that, described sign is " TEID CTRL " field that is set to invalid value.
5. universal block radio business service support internodal routing zone renewal method according to claim 4 is characterized in that, described invalid value is 0 or 0xFFFFFFFF.
6. universal block radio business service support internodal routing zone renewal method according to claim 1, it is characterized in that, in described step C, if comprise described sign in the described response message, then in the message header of the renewal context request message that is sent to described gateway GPRS supporting node (GGSN), " TEID CTRL " field is filled out to complete 0, and be with international mobile station identity number.
7. universal block radio business service support internodal routing zone renewal method according to claim 1, it is characterized in that, in described steps A, if the wireless universal packet service tunnel protocol passage version number between described first GPRS serving GPRS support node and the described gateway GPRS supporting node (GGSN) is not V0, the then described first GPRS serving GPRS support node is to described second GPRS serving GPRS support node feedback GPRS serving GPRS support node context response information, wherein, according to wireless universal packet service tunnel protocol channel information between described first GPRS serving GPRS support node and the gateway GPRS supporting node (GGSN), in the corresponding domain of described response message, insert corresponding " TEID CTRL " field and " TEID DATA I " field.
8. universal block radio business service support internodal routing zone renewal method according to claim 1, it is characterized in that, if among the described step C, judge not comprise described sign in the described response message, then " TEIDCTRL " field contents in the described GPRS serving GPRS support node context response information is inserted the respective field in the update packet data protocol contexts request message that is sent to described gateway GPRS supporting node (GGSN).
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| US7864699B2 (en) | 2007-08-15 | 2011-01-04 | Huawei Technologies Co., Ltd. | Method and device for information transfer |
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| CN100563390C (en) * | 2006-08-16 | 2009-11-25 | 华为技术有限公司 | Obtain the method for access system context |
| CN101577680B (en) * | 2009-06-19 | 2011-08-17 | 福建星网锐捷网络有限公司 | Updating method, device and system of tunnel routing information |
| US20130272136A1 (en) * | 2012-04-17 | 2013-10-17 | Tektronix, Inc. | Session-Aware GTPv1 Load Balancing |
| CN103096507B (en) * | 2013-02-21 | 2016-09-21 | 北京邮电大学 | The method for building up of a kind of data channel and device |
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| US7864699B2 (en) | 2007-08-15 | 2011-01-04 | Huawei Technologies Co., Ltd. | Method and device for information transfer |
| US8059679B2 (en) | 2007-08-15 | 2011-11-15 | Huawei Technologies Co., Ltd. | Method and device for information transfer |
| US9088918B2 (en) | 2007-08-15 | 2015-07-21 | Huawei Technologies Co., Ltd. | Method and device for information transfer |
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