CN101022453A - Method for ensuring minimum frame missing rate for interoffice route zone updating - Google Patents
Method for ensuring minimum frame missing rate for interoffice route zone updating Download PDFInfo
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Abstract
A method for ensuring minimum frame loss rate in interoffice route region update includes utilizing GPRS service supporting node to down-send logic link control non-confirmed information frame if data service is carried out by mobile station after interoffice route update is done by mobile station under non-confirmed data transmission mode of user surface and using application frame number prediction means to lower frame loss rate at user surface for making frame loss rate be the lowest.
Description
Technical field
The present invention relates to a kind of method of in wireless communication system, carrying out Packet data service, in particular a kind of method of under the situation that the variation of route district takes place, guaranteeing minimum frame loss rate.
Background technology
The GPRS of prior art (GPRS) communication system is to utilize the GSM circuit switching system to realize the system of Packet data service, and the GPRS communication system has increased by 3 primary clusterings on original GSM circuit switching system basis: packet control unit (PCU), GPRS serving GPRS support node (SGSN) and GGSN (GGSN).GPRS adopts packet-switch technology, but high efficiency of transmission at a high speed or low speed data and signaling, and has optimized the utilization to Internet resources and Radio Resource.
(Location Area) is similar with the gsm system lane place, and existing gprs system has used route district (Routing Area) expression location of mobile station information; When travelling carriage finds that current route of living in district changes or because cycle routing update timer when triggering, will be initiated routing update (RoutingArea Update) process.
Corresponding to the condition of aforementioned two speciogenesis routing updates, the GPRS routing update can be divided into common routing update and periodically routing update.And common routing update can be divided into intra-office routing update and interoffice routing update, the fundamental difference of intra-office routing update and interoffice routing update is whether the travelling carriage that routing update takes place belongs to same SGSN (GPRS serving GPRS support node) management with route district, current place and the current route of travelling carriage district.
3GPP TS 23.060 agreements are described in detail the routing update process of travelling carriage interoffice, wherein for guaranteeing that under the affirmation mode packet loss has not carried out clear and definite regulation, these regulations can guarantee that descending user's face SNDCP (subnet convergence convergence protocol) packet and GTP (GPRS Tunnel Protocol) packet of SGSN do not lost after Routing Area Update, and, therefore after resume data transmission, can guarantee not lose the LLC acknowledgement frame confirming that LLC (logic link control) confirms that transmission means will rebulid under the data transfer mode.
But in non-affirmation data transfer mode following time, interoffice routing update success back travelling carriage will continue original data transmission service.This moment is because the transmission frame number state of travelling carriage during still with old SGSN (GPRS serving GPRS support node) received and dispatched LLC-UI (logic link control unacknowledged information) frame, so being the frame number at last LLC-UI frame of old SGSN reception, the frame number of the next LLC-UI frame that travelling carriage expectation receives adds 1, and new SGSN does not also know this frame number, can only issue the LLC-UI frame from 0 open numbering, this moment, travelling carriage thought that probably this frame frame number illegally abandons this frame, can lose 32 frames continuously under worst case.
Equally, when similar problem also is present in issuing of chain of command signaling frame, because the chain of command signaling can only be carried by the LLC-UI frame.
Under non-affirmation transmission means, when taking place, the interoffice routing update how to guarantee the minimum frame loss rate of LLC-UI frame, 3GPP TS 23.060 agreements of prior art are not made clearly regulation.Therefore, prior art awaits improving and development.
Summary of the invention
The object of the present invention is to provide a kind of method of ensuring minimum frame missing rate for interoffice route zone updating, in gprs system, take place under the interoffice routing update situation, user's face and chain of command managed descending LLC-UI (logic link control unacknowledged information) frame frame number in non-affirmation data-transmission mode following time, thereby avoided the LLC-UI frame may lose too much problem.
Technical scheme of the present invention comprises:
A kind of method of ensuring minimum frame missing rate for interoffice route zone updating, it comprises the frame-skipping process and the chain of command logic link control unacknowledged information frame number forecasting process of user's face logic link control unacknowledged information frame, and the frame-skipping process of described user's face logic link control unacknowledged information frame comprises:
Under the non-affirmation data transfer mode of user's face, after travelling carriage carried out the interoffice routing update, if this travelling carriage is carrying out data service or follow-up when doing data service, new GPRS serving GPRS support node issued logic link control unacknowledged information frame.
Described method, wherein, described user's face determines that the step of logic link control unacknowledged information frame frame number comprises:
The frame number of first logic link control unacknowledged information frame that (a) issues is 0;
The frame number of n the logic link control unacknowledged information frame that (b) and then issues is 32* (n-1), n=2, and 3,4 ..., or 16;
(c) the logic link control unacknowledged information frame number that then issues is 0, and the frame number of its follow-up logic link control unacknowledged information frame that issues adds 1 successively.
Described method, wherein, when the described travelling carriage of chain of command carried out the interoffice routing update, the step that new GPRS serving GPRS support node issues logic link control unacknowledged information frame comprised:
(d) the up logic link control unacknowledged information frame number of record travelling carriage routing update request;
(e) the logic link control unacknowledged information frame number that issues of this GPRS serving GPRS support node adds predetermined value for the frame number value of record subsequently;
The frame number of the subsequent logic controlling links unacknowledged information frame that (f) then issues adds 1 successively.
Described method, wherein, described interoffice routing update process comprises step:
Steps A, the routing update request that new GPRS serving GPRS support node is received travelling carriage, and according to the old road in the request message by district's information, be judged as the interoffice routing update;
Step B, new GPRS serving GPRS support node is to the old GPRS serving GPRS support node request contextual information relevant with travelling carriage, and old GPRS serving GPRS support node is checked affirmation to the information of travelling carriage, and responds request to new GPRS serving GPRS support node;
Step C, new GPRS serving GPRS support node send GPRS serving GPRS support node context acknowledgement message to old GPRS serving GPRS support node, notify the new GPRS serving GPRS support node of the other side to carry out the preparation that receives packet;
Step D, old GPRS serving GPRS support node sends packet backup and beginning to new GPRS serving GPRS support node;
Step e, new GPRS serving GPRS support node sends the request of update packet data protocol contexts to GGSN, and obtains the affirmation of GGSN.
Described method wherein, also comprises:
Step F, new GPRS serving GPRS support node sends the renewal location information request to the attaching position register of travelling carriage;
Step G, described attaching position register sends the request of deletion travelling carriage relevant location information to old GPRS serving GPRS support node, and gets the affirmation of GPRS serving GPRS support node until old;
Step H, described attaching position register sends the relevant CAMEL-Subscription-Information of travelling carriage to new GPRS serving GPRS support node, and new GPRS serving GPRS support node generates the mobile management context of travelling carriage and replys acknowledge message;
Step I, described attaching position register send to new GPRS serving GPRS support node and upgrade the position acknowledge message, finish the position of travelling carriage and upgrade.
Described method wherein, also comprises:
Step J, new GPRS serving GPRS support node is replied the routing update request to travelling carriage and is accepted message, and notice travelling carriage network side has been accepted the routing update request;
Step K, if network side is that travelling carriage has been redistributed the interim mobile identity sign of packet domain, travelling carriage need send routing update and finish message, wherein carries the interim mobile identity sign of newly assigned packet domain and confirms to network side.
Described method wherein, also comprises:
Step C1, new GPRS serving GPRS support node carries out the safety function inspection of authentication, encryption to travelling carriage.
The method of a kind of ensuring minimum frame missing rate for interoffice route zone updating provided by the present invention has reduced frame loss rate by using the frame number Forecasting Methodology at user's face, has guaranteed that frame loss rate is minimum; Guarantee not frame losing at chain of command, the signaling to SGSN responds rapidly, has avoided travelling carriage to retransmit the situation of signaling frame because of can not get the SGSN response.
Description of drawings
Fig. 1 is travelling carriage of the inventive method and the protocol stack schematic diagram between the SGSN;
Fig. 2 is the flow chart that the travelling carriage of the inventive method carries out the interoffice Routing Area Update;
Fig. 3 is user's face LLC-UI frame number handling process decomposing schematic representation of the inventive method;
Fig. 4 and Fig. 5 are that user's face LLC-UI frame frame-skipping flow process of the present invention is explained schematic diagram;
Fig. 6 is a chain of command LLC-UI frame number handling process decomposing schematic representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, will the implementation method of each specific embodiment LLC-UI of the present invention (logic link control unacknowledged information) frame number management be elaborated.
The method of ensuring minimum frame missing rate for interoffice route zone updating of the present invention, what be particularly related to is the method that how to guarantee minimum frame loss rate in GPRS (GPRS) communication system under the non-affirmation transmission mode, and the non-affirmation Frame of LLC (logic link control) layer might be lost too much problem when being routed to new office continuation transfer of data to solve travelling carriage.
In order to solve this technical problem, the inventive method provides a kind of method of frame number management to reach this purpose, and this method is divided into to user's face LLC-UI frame " frame-skipping " process with to chain of command LLC-UI frame number forecasting process:
On user's face, after travelling carriage had carried out the interoffice routing update under the non-affirmation data transfer mode, if this travelling carriage is carrying out data service or follow-up when doing data service, it is as follows that new SGSN (GPRS serving GPRS support node) issues LLC-UI frame step:
The frame number of first LLC-UI frame that (a) issues is 0;
The frame number of n the LLC-UI frame that (b) and then issues is 32* (n-1), n=2, and 3,4 ..., 16;
(c) the LLC-UI frame number that then issues is 0, and the frame number of its follow-up LLC-UI frame that issues adds 1 successively.
At chain of command, when travelling carriage carried out the interoffice routing update, it is as follows that new SGSN issues LLC-UI frame step:
(d) the up LLC-UI frame number of record travelling carriage routing update request;
(e) the LLC-UI frame number that issues of SGSN is that the frame number value of above-noted adds n subsequently, and the scope suggestion of n is 1～32;
The frame number of the follow-up LLC-UI frame that (f) then issues adds 1 successively.
Be travelling carriage (MS) of the inventive method and the protocol stack block diagram between the GPRS serving GPRS support node (SGSN) as shown in Figure 1, there is shown the particular location of LLC (logic link control) protocol layer, the data frame transfer of mode and non-affirmation mode is confirmed in this layer protocol support, as the direct mutual agreement between travelling carriage and the SGSN, stride across base station system (BSS) and directly connect travelling carriage and SGSN realization.
Be the schematic flow sheet that the travelling carriage of the inventive method carries out the interoffice routing update as shown in Figure 2, described the once successful interoffice routing update process of the inventive method, its key step is as follows:
Step 1, the routing update request that new SGSN receives travelling carriage, and according to the old road in the request message by district's information, be judged as the interoffice routing update.
Step 2, new SGSN is to the old SGSN request contextual information relevant with travelling carriage, and old SGSN checks affirmation to the information of travelling carriage, and responds request to new SGSN.
Step 3, new SGSN might carry out a series of safety function inspections such as authentication, encryption to travelling carriage.
Step 4, new SGSN sends the SGSN context acknowledgement message to old SGSN, notifies the new SGSN of the other side to carry out the preparation that receives packet.
Step 5, old SGSN sends packet backup and beginning to new SGSN.
Step 6, new SGSN sends the request of update packet data protocol contexts (PDP Context) to GGSN (GGSN), and obtains the affirmation of GGSN.
Step 7, new SGSN sends the renewal location information request to the attaching position register (HLR) of travelling carriage.
Step 8, attaching position register (HLR) sends the request of deletion travelling carriage relevant location information to old SGSN, and gets the affirmation of SGSN until old.
Step 9, attaching position register (HLR) sends the relevant CAMEL-Subscription-Information of travelling carriage to new SGSN, and new SGSN generates the mobile management context (MM Context) of travelling carriage and replys acknowledge message.
Step 10, attaching position register send to new SGSN upgrades the position acknowledge message, finishes the position of travelling carriage and upgrades.
Step 11, new SGSN replys the routing update request to travelling carriage and accepts message, and notice travelling carriage network side has been accepted the routing update request.
Step 12, if network side is that travelling carriage has been redistributed the interim mobile identity sign of packet domain (P-TMSI), travelling carriage need send routing update and finish message, wherein carries newly assigned P-TMSI and confirms to network side.
Above-mentioned steps is briefly understood the main flow process that the travelling carriage of the inventive method carries out the interoffice routing update, and its concrete introduction please referring to 3GPP TS 23.060 agreements, does not repeat them here.Below in conjunction with this flow process, the specific implementation process of the inventive method is described.
The descending LLC-UI frame of user's face of the inventive method " frame-skipping " implementation procedure comprises:
According to 3GPP TS 44.064 agreements, LLC comes control transmission by LLC-UI (logic link control unacknowledged information) frame frame number administrative mechanism under non-affirmation transmission means.The LLC layer is stored the LLC-UI frame frame number that next expectation is received by a local variable, is designated as V (UR).The LLC layer receives that whenever a LLC-UI frame just takes out this frame frame number, compares with V (UR), if the frame number N (U) that receives satisfies condition:
Value.Under the situation of not considering bottom link communication quality, in fact only need carry out once " frame-skipping " and get final product, as shown in Figure 4, follow-up frame number can send continuously, and travelling carriage can normally receive.
If but consider problems such as bottom link communication quality, then follow-up continuous " frame-skipping " is necessary.Shown in example among Fig. 5, suppose that V (UR) value of travelling carriage is 64 after the interoffice routing update, No. 0 LLC-UI frame that issues is first lost at wireless mouthful, then the LLC layer of travelling carriage is not judged the validity of its frame number at all, then carried out " frame-skipping " for the first time, issue frame number and be 32 LLC-UI frame and can be moved the platform rejection, reject continuously if send the LLC-UI frame then still can be moved platform with continuous frame number subsequently, therefore consider that the expectation of bottom link communication quality and travelling carriage receives the uncertainty of frame number V (UR), the inventive method execution mode preferably is, continue the 16 frame LLC-UI frames that jump sends the back, and then issue with continuous frame number, so just can more effectively avoid the continuous frame loss condition that may occur under the truth.The inventive method has realized guaranteeing the minimum frame loss rate of descending LLC-UI frame after the interoffice routing update.
V (UR) value among above-mentioned two embodiment after the travelling carriage routing update is for convenience of explanation and hypothesis, there is no special implication, and to the value of V (UR) arbitrarily, the present invention is effective without exception.
For the descending LLC-UI frame number prediction of the chain of command of the inventive method implementation procedure, it comprises:
The problem of user's face can appear at chain of command equally, because it is mutual all to utilize the LLC-UI frame to carry out in the transmission of chain of command top signaling message, therefore new SGSN has received after the interoffice routing update request in Fig. 2, can carry out a series of safety function inspections such as follow-up authentication, encryption to travelling carriage, if first UI frame that new SGSN issues is No. 0 frame, then might be moved the platform rejection, the failure that can cause the repeating transmission of message like this even cause safety function such as authentication to be checked, so that the failure of whole signaling flow process.
The inventive method can effectively address the above problem, at first can notice, the inventive method travelling carriage adhere to (Attach) from the beginning arrives a series of interacting messages such as follow-up authentication, routing update, the number of up and descending LLC-UI frame is much at one, be the up and descending UI frame of chain of command frame number much at one, based on this fact, under the situation of interoffice routing update, the inventive method can
(V(UR)-32)≤N(U)＜V(UR)
(1)
Then this frame is an illegitimate frames, should abandon.If N (U) then thinks legal frame not in above-mentioned scope, accept this frame, and V (UR) is updated to N (U)+1.Here, V (UR), the value of N (U) is that mould changes with 512 all, situation for the interoffice Routing Area Update, then can go wrong, travelling carriage is after the interoffice routing update is finished, if proceed transfer of data, travelling carriage itself wishes that the frame number that receives is that the frame number that receives last LLC-UI frame among the old SGSN adds 1, and the frame number of the LLC-UI frame that new SGSN issues generally can be since 0, for the worst situation, if V (UR) value of travelling carriage this moment is 32, and newly SGSN adds 1 rule successively with normal frame number and issues the LLC-UI frame, 32 frames are promptly lost in the then travelling carriage reception of 0～No. 31 frame of refusal continuously continuously.
The inventive method can solve the above-mentioned problem of losing the LLC-UI frame continuously that may occur, and the specific implementation process is described as follows as shown in Figure 3:
Step 1 begins to issue.Travelling carriage is after finishing the interoffice routing update, and message is finished in the routing update that new SGSN can receive travelling carriage, and this stylish SGSN prepares beginning and issues the LLC-UI frame to travelling carriage, first LLC-UI frame that issues, and its frame number can be assigned as 0.
Step 2, " frame-skipping " process.The process of " frame-skipping " is that the inventive method is that step-length is jumped at the frame number of the follow-up LLC-UI frame that issues with 32, treat frame number rebound 0 after, " frame-skipping " process finishes.
Step 3 normally issues.Issue LLC-UI frame frame number later on and add 1 successively, normally issue.
Further set forth below in conjunction with Fig. 4 and Fig. 5 for " frame-skipping " method in the step 2.
At the example shown in Fig. 4 is not consider bottom link communication quality, promptly can not occur under the situation of frame losing at bottom, and descending LLC-UI frame can normally be issued to the LLC layer of travelling carriage and handle situation.After supposing the travelling carriage routing update, LLC-UI frame frame number V (UR) value that its expectation receives is 32, according to the LLC-UI frame frame number acceptance criteria of introducing previously, No. 0 frame can be moved platform and be judged to invalid frame and be rejected reception, because what send subsequently is that frame number is 32 LLC-UI frame, promptly this frame frame number has necessarily been jumped out the scope of travelling carriage rejection, therefore travelling carriage can normally receive, and revise V (UR) and utilize the frame number of up UI frame to predict the next UI frame frame number of wishing reception of travelling carriage, as shown in Figure 6, the specific implementation process comprises:
Step 1, new SGSN receives the routing update request of travelling carriage, at first judge whether routing update situation into interoffice, if, then need to note the frame number N (U) of up UI frame, and the frame number of the descending UI frame in definite back is N (U)+n, and the value of n can be 1～32 in the choice, can guarantee that like this travelling carriage can receive follow-up UI frame.
Step 301, new SGSN can send the request of authentication and encryption to travelling carriage, and the UI frame number that issues is determined frame number in the step 1, then waits for the authentication and the encrypted response message of receiving mobile.
Step 11, new SGSN is follow-up when travelling carriage sends message, can use the UI frame number that sends previously to add 1 successively.
Step 12, travelling carriage sends routing update to new SGSN and finishes message, finishes this interoffice routing update process.
According to above-mentioned analysis, the inventive method can guarantee the reliability that signaling message issues under the interoffice routing update situation, and guarantees that travelling carriage carries out interacting message with SGSN fast.
Said method of the present invention has solved travelling carriage when carrying out the interoffice routing update, might the too much problem of descending LLC-UI LOF.If use conventional LLC-UI frame number management method, consider under the situation of worst, may lose 32 LLC-UI frames continuously at user's face, cause frame loss rate excessive, even directly cause upper-layer service to carry out; And at chain of command, travelling carriage might be lost the signaling frame that SGSN (GPRS serving GPRS support node) issues, thereby causes normal signaling process to carry out.The frame number Forecasting Methodology of using the inventive method can reduce frame loss rate at user's face, guarantees that frame loss rate is minimum; Can guarantee not frame losing at chain of command, the signaling to SGSN responds rapidly, has avoided travelling carriage to retransmit the situation of signaling frame because of can not get the SGSN response.
The above is each preferred embodiment of transmission continuously of the non-affirmation data of maintenance under the gprs system interoffice Routing Area Update situation office of striding, but is not to be used for limiting practical range of the present invention; Every equivalence of doing according to the technical conceive of the inventive method changes and revises, and all should belong to the content that scope of patent protection of the present invention contains.
Claims (7)
1, a kind of method of ensuring minimum frame missing rate for interoffice route zone updating, it comprises the frame-skipping process and the chain of command logic link control unacknowledged information frame number forecasting process of user's face logic link control unacknowledged information frame, and the frame-skipping process of described user's face logic link control unacknowledged information frame comprises:
Under the non-affirmation data transfer mode of user's face, after travelling carriage carried out the interoffice routing update, if this travelling carriage is carrying out data service or follow-up when doing data service, new GPRS serving GPRS support node issued logic link control unacknowledged information frame.
2, method according to claim 1 is characterized in that, described user's face determines that the step of logic link control unacknowledged information frame frame number comprises:
The frame number of first logic link control unacknowledged information frame that (a) issues is 0;
The frame number of n the logic link control unacknowledged information frame that (b) and then issues is 32* (n-1), n=2, and 3,4 ..., or 16;
(c) the logic link control unacknowledged information frame number that then issues is 0, and the frame number of its follow-up logic link control unacknowledged information frame that issues adds 1 successively.
3, method according to claim 1 is characterized in that, when the described travelling carriage of chain of command carried out the interoffice routing update, the step that new GPRS serving GPRS support node issues logic link control unacknowledged information frame comprised:
(d) the up logic link control unacknowledged information frame number of record travelling carriage routing update request;
(e) the logic link control unacknowledged information frame number that issues of this GPRS serving GPRS support node adds predetermined value for the frame number value of record subsequently;
The frame number of the subsequent logic controlling links unacknowledged information frame that (f) then issues adds 1 successively.
According to claim 2 or 3 described methods, it is characterized in that 4, described interoffice routing update process comprises step:
Steps A, the routing update request that new GPRS serving GPRS support node is received travelling carriage, and according to the old road in the request message by district's information, be judged as the interoffice routing update;
Step B, new GPRS serving GPRS support node is to the old GPRS serving GPRS support node request contextual information relevant with travelling carriage, and old GPRS serving GPRS support node is checked affirmation to the information of travelling carriage, and responds request to new GPRS serving GPRS support node;
Step C, new GPRS serving GPRS support node send GPRS serving GPRS support node context acknowledgement message to old GPRS serving GPRS support node, notify the new GPRS serving GPRS support node of the other side to carry out the preparation that receives packet;
Step D, old GPRS serving GPRS support node sends packet backup and beginning to new GPRS serving GPRS support node;
Step e, new GPRS serving GPRS support node sends the request of update packet data protocol contexts to GGSN, and obtains the affirmation of GGSN.
5, method according to claim 4 is characterized in that, also comprises:
Step F, new GPRS serving GPRS support node sends the renewal location information request to the attaching position register of travelling carriage;
Step G, described attaching position register sends the request of deletion travelling carriage relevant location information to old GPRS serving GPRS support node, and gets the affirmation of GPRS serving GPRS support node until old;
Step H, described attaching position register sends the relevant CAMEL-Subscription-Information of travelling carriage to new GPRS serving GPRS support node, and new GPRS serving GPRS support node generates the mobile management context of travelling carriage and replys acknowledge message;
Step I, described attaching position register send to new GPRS serving GPRS support node and upgrade the position acknowledge message, finish the position of travelling carriage and upgrade.
6, method according to claim 5 is characterized in that, also comprises:
Step J, new GPRS serving GPRS support node is replied the routing update request to travelling carriage and is accepted message, and notice travelling carriage network side has been accepted the routing update request;
Step K, if network side is that travelling carriage has been redistributed the interim mobile identity sign of packet domain, travelling carriage need send routing update and finish message, wherein carries the interim mobile identity sign of newly assigned packet domain and confirms to network side.
7, method according to claim 6 is characterized in that, also comprises:
Step C1, new GPRS serving GPRS support node carries out the safety function inspection of authentication, encryption to travelling carriage.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980561A (en) * | 2010-07-22 | 2011-02-23 | 展讯通信（上海）有限公司 | Method for updating routing area and user terminal |
| CN102571581A (en) * | 2012-01-05 | 2012-07-11 | 华为技术有限公司 | Re-routing method, re-routing system, base station controller, and core network equipment in MOCN |
| WO2015070424A1 (en) * | 2013-11-14 | 2015-05-21 | 华为技术有限公司 | User device registration/routing update method and device |
| CN110300408A (en) * | 2010-09-09 | 2019-10-01 | 三星电子株式会社 | Non-Access Stratum communication means and equipment in mobile communication system |
-
2006
- 2006-02-16 CN CNB2006100336319A patent/CN100571273C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980561A (en) * | 2010-07-22 | 2011-02-23 | 展讯通信（上海）有限公司 | Method for updating routing area and user terminal |
| CN101980561B (en) * | 2010-07-22 | 2013-05-15 | 展讯通信（上海）有限公司 | Method for updating routing area and user terminal |
| CN110300408A (en) * | 2010-09-09 | 2019-10-01 | 三星电子株式会社 | Non-Access Stratum communication means and equipment in mobile communication system |
| CN102571581A (en) * | 2012-01-05 | 2012-07-11 | 华为技术有限公司 | Re-routing method, re-routing system, base station controller, and core network equipment in MOCN |
| WO2013102401A1 (en) * | 2012-01-05 | 2013-07-11 | 华为技术有限公司 | Re-routing method and system in mocn network, base station controller and core network device |
| CN102571581B (en) * | 2012-01-05 | 2015-11-25 | 华为技术有限公司 | The method of heavy-route, system and base station controller, equipment of the core network in MOCN network |
| WO2015070424A1 (en) * | 2013-11-14 | 2015-05-21 | 华为技术有限公司 | User device registration/routing update method and device |
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| Publication number | Publication date |
|---|---|
| CN100571273C (en) | 2009-12-16 |
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