CN102160339A - Method for releasing mobile station resource in proxy mobile ip and apparatus thereof - Google Patents
Method for releasing mobile station resource in proxy mobile ip and apparatus thereof Download PDFInfo
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- CN102160339A CN102160339A CN2009801366012A CN200980136601A CN102160339A CN 102160339 A CN102160339 A CN 102160339A CN 2009801366012 A CN2009801366012 A CN 2009801366012A CN 200980136601 A CN200980136601 A CN 200980136601A CN 102160339 A CN102160339 A CN 102160339A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000004044 response Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
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- 238000012163 sequencing technique Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 241001101988 Proxys Species 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/18—Service support devices; Network management devices
- H04W88/182—Network node acting on behalf of an other network entity, e.g. proxy
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- Computer Networks & Wireless Communication (AREA)
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Abstract
A method for releasing mobile station resource in proxy mobile Internet Protocol (IP) and an apparatus thereof are provided by the present invention. A network access device detects the network connection state of the accessed mobile station, for example, it can detect the network connection state rapidly and effectively based on the 802.1x port access control state of the mobile station; thereby, a proxy mobile IP agent network element can release and recycle its relevant mobile IP network resource rapidly based on the network connection state after the network connection of the mobile station disconnects, its work load is relieved, and its work capability is enhanced.
Description
It is used for mobile site method for releasing resource and its engineering device technique field in a kind of proxy-mobile IP
The present invention relates to communication technical field, more particularly to method for managing resource and its device to mobile site under proxy-mobile IP (PMIP) application environment.Background technology
Mobile IP refers to mobile site, including computer, server, terminal, network segment etc., with specific network ip address, realize the roaming function across different segment, and ensure that any change does not occur in roam procedure for the network legal power based on IP networks, realize the seamless connection and continual transmission of data.It mainly by foretelling at mobile site MS (Mob i l e S ta t i on), home agent HA (Home Agent) and sunset acts on behalf of three functional entitys of FA (Fore i gn Agent) and constituted, and passes through agent discovery, registration, bag transmission（Tunnel style）These three basic functions complete the routing function of mobile site to cooperate with.
There are two kinds of technologies that mobile site can be made to support mobile IP at present, CMIP (client mobile IP) and PMIP (proxy-mobile IP) can be divided into still in network side in user side according to mobile IP client.And for PMIP, the mobile IP registration of mobile site and the message for going registration etc. related to mobile IP are all the proxy-mobile IP agent network elements by network side（PMIP Agent) initiate, the PMIP Agent provide mobile IP agency month business for the mobile site of these movement IP functions.The PMIP Agent can also can respectively be located at different network functional entities with FA on a network functional entity from FA.One PMIP Agent may manage multiple or even greater number of mobile site and provide proxy Mobile IP service for it, therefore, PMIP Agent need certain system resource and load capacity to maintain the network insertion service and mobile management of its affiliated mobile site, when mobile site leaves the network belonging to the PMIP Agent, preferable scene is that the PMIP Agent being engaged in for the mobile site discharge the resource related to the mobile site and further notify other related network functional entities at once（Such as FA) the release Internet resources related to the mobile site.
But, in existing WLAN (WLANs）Proxy-mobile IP is disposed in network, especially large-scale wlan network, when a mobile site leaves the access network of its current service,
PMIP Agent can not the information left of the immediately obtained mobile site, therefore, within a period of time, PMIP Agent still will be the certain computing resource of the mobile site maintenance having been moved off, the wasting of resources caused on PMIP Agent, it is especially considering that under large-scale WLAN environment, one PMIP Agent usually requires to provide mobile IP agency service for substantial amounts of mobile site, if PMIP Agent can not grasp the network connection state of mobile site in real time, bigger computing resource waste can be caused.
Further analysis, the present access network that leaves of mobile site is divided into two kinds of situations：1), shutdown or power down；Such case causes PMIP Agent itself can not judge the connection status of mobile site, so as to discharge the related resource with the mobile site；2), mobile site disconnects the wireless aps (access point of current service network）, it is switched to the wireless aps of another network.For mobile IP, when new FA receives handover request, switching notice can be sent to the previous access FA of mobile site, so, when receiving mobile site new access network switching notice, the original access network of mobile site can just obtain mobile site and have been switched to the notice of other network, so as to discharge the related resource with the mobile site, but, performance and concrete implementation scheme of the such case dependent on switching.The content of the invention
Present invention seek to address that foregoing one or more technical problems, detected and notified at once by the network connection state to mobile site, so that the related network elements of the proxy-mobile IP of network side are when the mobile site leaves current network, quick release recovery is carried out to the resource shared by the mobile site, mitigate its workload, improve its ability to work.
According to an aspect of the present invention, providing here is used for the method that mobile site resource discharges in a kind of proxy-mobile IP, including：The network connection state of the mobile site of step a), network access equipment to being accessed is detected；Step b), proxy-mobile IP agent network element discharge its related mobile IP network resource according to the network connection state after the network connection of mobile site disconnects.
According to another aspect of the present invention, a kind of network access equipment being used in proxy-mobile IP is provided here, and it includes being used to detect the detection means of the network connection state of accessed mobile site；And the network for mobile site described in notification agent mobile IP agent network element
The notice device of connection status.
According to another aspect of the present invention, a kind of proxy-mobile IP agent network element equipment is provided here, and it includes：For the interface arrangement for the network connection state for obtaining its mobile site acted on behalf of；And the processing unit of its related mobile IP network resource is discharged for the mobile site after mobile site network connection disconnection.
According to another aspect of the present invention, a kind of communication equipment being used in proxy-mobile IP is provided here, and it includes：For the detection means for the network connection state for detecting accessed mobile site；And for discharging the proxy-mobile IP agent apparatus of its related mobile IP network resource for the mobile site after mobile site network connection disconnection.
The present invention has following technical advantage：
Proxy-mobile IP agent network element equipment can obtain the network connection state of the mobile site of its agency quickly, judge whether mobile site has been moved off service network, so as to effectively discharge the computing resource related to the mobile site in time.By taking Wi F i technologies as an example, IEEE (American Institute of Electrical and Electronics Engineers）The 802. l x consensus standards formulated have become a kind of authentication mechanism generally used, can effectively judge whether the mobile site disconnects network of being engaged in the current moon by the 802. lx authentication ports states monitored for some mobile site.
Solution has good autgmentability：By judging that transfer point has been moved off, what proxy-mobile IP agent network element equipment can further trigger mobile IP removes registration message, so as to discharge the correlation computations resource that the mobile site is directed in mobile IP.
Solution has good autgmentability：The invention to existing network protocol on the premise of it need not be modified, by designing necessary software module, and the present invention easier can be applied in the existing mobile IP network equipment.Brief description of the drawings
By the detailed description with the accompanying drawing being set forth below, feature, property and advantage of the invention will be apparent, and identical element has identical mark in accompanying drawing, wherein：Fig. 1 is a kind of typical proxy mobile IP networks structure legend；
Fig. 1 is to be used for the method flow legend that mobile site resource discharges during proxy-mobile IP provided by the present invention is acted on behalf of；
Fig. 3 is network access equipment legend provided by the present invention；
Fig. 4 is proxy-mobile IP agent equipment legend provided by the present invention.Embodiment
Below in conjunction with the accompanying drawings, the preferred embodiment of the present invention is described in detail.
In proxy mobile IP networks structure legend as shown in Figure 1, a mobile site MS 11 and the CPE (client devices in its family WALN networks 10）Set up wireless connection and then network access equipment DSLAM (the subscribers' line couple in multiplexers for passing through its home network 50）51 enjoy network insertion service.With the popularization of wlan network, the scale of wlan network is continuously increased, occur in that from the wlan network in single home-ranges to the large-scale evolution of focus wlan network 20, mobile site 11 can realize the roaming switch between different WALN networks 10,20 by mobile IP technology, when it roams into field network 30, mobile site 11 will by agent discovery, register, set up tunnel and realize mobile IP.So, IP address when mobile site 11 sends packet to its far-end correspondent node 71 using home network 50 is used as source address, so mobile site 11 is seemingly connected in home network 50 all the time, even if mobile site 11 roams into field network 30, communication node 71 still may not realize that its movement, and home network 50 can be reached with mobile site 11 first for the packet of purpose address, intercepted and captured by the home agent 52 in home network, then these packets are sent to the Care-of Address in the place field network 30 of mobile site 11 by tunnel 41.
For wlan network 20 large-scale for focus, the quantity for the mobile site that its single wireless access point AP 21 is connected can be more, and with the WLAN popularizations applied and the increase of network size, mobile site 11 switches between different radio access point（Handover) frequency can also increase.Realize that the DSLAM 31 of proxy-mobile IP agent network element function, the grade mobile IP network element device of Foreign Agent (FA) 32 need more computing resources to maintain the communication of the mobile site in its service range in legend, the mobile site 11 that such as DSLAM 31 will assist in no mobile IP protocol stack makes it have mobile IP capability, it can be by monitoring the DHCP protocol wrapper of mobile site, it is converted as mobile IP controls bag, is deposited with completing to move IP registration, data forwarding, data Slow.When mobile site 11 leaves currently attached wireless access point AP 21, above-mentioned proxy-mobile IP network element device should discharge the net required for the mobile site in time
Network resource.
In provided by the present invention Fig. 1, wireless access point AP 21 is as network access equipment, and the network connection state of its mobile site to the mobile IP accessed is detected and can inform its DSLAM 31 in time.Currently, the lx agreements of IEEE 802. are increasingly becoming the widely used authentication method of WLAN applications, and 802. 1 X ports access control technologies are also a kind of enhancement network security solution for WLAN.After mobile site 11 is associated with wireless access point AP 21, if WLAN services can be used to depend on 802. lx authentication result, if certification passes through, wireless access point AP 21 is opened for the mobile site（ON) this logic port, does not otherwise allow user to surf the Net.Mobile site 11 installs 802. lx client softwares, and wireless access point AP 21 embeds 802. lx authentication proxys, while the authentication information of user is passed through RADIUS (remote authentication dial-in user services by it also as Authentication Client）Protocol forward gives long-range RADIUS authentication server（Legend is not illustrated）.In legend provided by the present invention, wireless access point AP 21 can be detected by the 802. lx ports access control states to mobile site 11, for example：IEEE802. lx agreements are that the successful user of each certification safeguards a state machine, the state machine can be based on as trigger mechanism when detecting the disconnection network connection of mobile site 11, it constructs a notification message and is sent to the DSLAM 31 with proxy-mobile IP agent network element function;Or wireless access point AP 21 is also subjected to the poll from DSLAM 31 or inquiry, the network connection state of the mobile site 11 to being asked responds message back after detecting.
Preferably, proposed notification message refers to the mobile IP of standard and removes registration request
(De-Reg i s ter Reques t) is designed so that the resource of mobile site distribution can be released to according to the message by receiving the proxy-mobile IP agent network element of the notice；Under poll or inquiry mode, if the mobile site network connection state for being polled or inquiring about disconnects, it can provide a response message, it is proposed that the mobile IP that response message refers to standard goes registration to reply
(De-Reg i s ter Rep ly) is designed so that the resource that the response message is released to mobile site distribution can be occupied by receiving the proxy-mobile IP agent network element of the notice.
By the method in this programme, the access network that mobile site connects wireless access point AP 21 can know connection/leave state of mobile site in time, and convenient access network operation business carries out charging to mobile subscriber：Operator can be carried out to the network connection of mobile subscriber exactly
Timing, and then improve billing accuracy.
In provided by the present invention Fig. 1, DSLAM 31 realizes proxy-mobile IP agent network element function, it discharges the Internet resources of the mobile site by the network connection state according to wireless access point AP 21, after the network connection of the mobile site disconnects in time, for example：Mobile site mobile IP registration, data forwarding, data Slow in mobile IP network are deposited, and remove registration request by the mobile IP of its triggering transmission（De- Reg i s ter Reques t) FA 32 of the message to network side, so as to further discharge other Internet resources related to the mobile site in mobile IP.
Those skilled in the art are also understood that, foregoing 802. lx ports access control function and its detection, proxy-mobile IP agent network element function may be implemented in same network entity, such as DSLAM 31 is while as proxy-mobile IP agent network element, with 802. lx ports access control functions and its detection, and the wireless access point AP 21 of distal end is only a typical wireless termination point WTP;Or, during wireless access point AP 21 can be an enhanced WAP, with 802. lx ports access control functions and its while detection, with proxy-mobile IP agent network element function.
Fig. 1 is to be used for the method flow legend that mobile site resource discharges during proxy-mobile IP provided by the present invention is acted on behalf of, and it comprises the following steps：
Step S201, the network connection state from 21 times mobile sites of wireless access point AP 11 is obtained as the DSLAM 31 of proxy-mobile IP agent network element, a kind of mode, wireless access point AP 21 is changed into closing in 802. lx logic ports of mobile site 11（OFF) state, its network connection be in leave/off-state, it actively sends connection status notification message, the notification message can using specification as a mobile IP in go login request message, its message definition refers to relevant criterion；Or another mode, DSLAM 31 is polled to obtain the response of its network connection state to wireless access point AP 21 to the network connection state of mobile site 11；Or DSLAM 31 is inquired about the network connection state of mobile site 11 to obtain the response of its network connection state when mobile agent Service Source is nervous to wireless access point AP 21.
Step S202, if the network connection of mobile site 11 disconnects, the DSLAM 31 as proxy-mobile IP agent network element will discharge the Internet resources that it is mobile site distribution, for example：DSLAM 31 is as proxy-mobile IP agent network element, the mobile IP distributed for the mobile site
Registration, data forwarding, data Slow such as deposit at the resource.DSLAM 31 can further trigger the mobile IP resource release flows of network side correlation, specifically, and it outwards acts on behalf of 32 transmissions movement IP and removes registration request（De- Register Request) message, mobile IP's goes registration message identical with registration message form, but being set to the home address that 00, CoA addresses are set as mobile site the life cycle in message.
Step S203, what the processing of Foreign Agent 32 was received goes login request message, and forwards mobile IP to remove registration request (De-Register Request) to home agent 520
Step S2Q4, home agent 52 is sent to external agent 32 goes registration to reply message (De-Register Reply), and the mobile IP for receiving the mobile site removes registration request.
Step S2Q5, this goes registration to reply message to the processing of external agent 32, is then forwarded to the agent network element DSLAM 31 corresponding to mobile site 11.
31 couples of step S206, agent network element DSLAM goes registration to reply message to be responded (De-Register Response) from external agent 32.
Step S207, what external agent 32 sent to agent network element DSLAM 31 goes registration reply message to add their confirmation (De-Register Confirm).
It will be understood by those skilled in the art, however, that the method flow of releasing ms point resource is only the mobile agent of one embodiment, proxy-mobile IP agent network element and its network side in foregoing agents movement IP（FA or HA) rank forefront and state the network connection state of mobile site and determine and discharge related network resources and the sequencing of releasing network resource can change.
Fig. 3 is network access equipment legend provided by the present invention, generally, after mobile site 11 and network access equipment 21 wireless association of wireless access point AP, its PAE (port access entity）Pass through authenticator pae 301 of the set up Radio Link into access point 21 and user rs credentials are provided, the user rs credentials can be transmitted to independent authenticator's server by authenticator pae 301, generally, it passes through RADIUS (remote authentication dial-in user services）Agreement, which will be connected, to be attempted parameter and is sent to long-range RADIUS authentication person's server and is authenticated, if certification passes through, then wireless access point AP 21 is that the mobile site 11 opens this 802. lx logic port 302, it is allowed to which user's online is using being engaged in 303 the WLAN months.
Here, we can wireless access point AP 21 set a detection means 310 and
Device 320 is notified, wherein：
The corresponding 802. lx logic ports 302 of 310 pairs of mobile sites accessed of detection means are detected, it is possible thereby to construct and maintain the mobile site network connection state table that two tuples are constituted：＜ mobile sites MAC, 802. lx logical port states ＞.When the network connection state of mobile site 11 is changed into closing（OFF), show that mobile site leaves/off-state in network connection, by the trigger mechanism of detection means 310, notify device 320 to send proxy-mobile IP agent network element equipment of the notification message to network side.Preferably, it is proposed that the notification message can using specification as a mobile IP in go registration（De-Reg i s ter) request message, its message definition refers to relevant criterion.Certainly, device 320 is notified to receive poll/inquiry of the proxy-mobile IP agent network element equipment from network side, the response message of the network connection state for the mobile site for being polled/inquiring about is provided by the network connection state table search of detection means 310, preferably, it is proposed that changing the mobile IP that response message is a standard removes registration reply message, its message definition refers to relevant criterion.
Fig. 4 is proxy-mobile IP agent equipment legend provided by the present invention, and it includes interface arrangement 410, processing unit 420, wherein：
Interface arrangement 410, which can be received in the notification message for including mobile site network connection state sent from Customer Premises Network access device, such as one mobile IP, goes login request message to represent that a mobile site disconnects network connection with the network access equipment；Or the interface arrangement 410 can be polled to obtain the response of its network connection state to mobile site network connection state；Or the interface arrangement 410 is when mobile IP agent Service Source is nervous, with inquiry mode to obtain the response of specific mobile site network connection state.
Mobile site that is just blunt according to the notice or response, being disconnected for network connection state, processing unit 420 can check its move IP resources occupation states after, decide whether to discharge the computing resource related to the mobile site, for example：Mobile site mobile IP registration function, data forwarding, data Slow in the agent network element such as deposit at the resource, processing unit 420 can instruct interface arrangement 410, and further mobile agent equipment of the login request message to network side is gone in transmission, so as to further discharge the mobile site other Internet resources related in mobile IP.Determined according to the notice or response it will be understood by those skilled in the art, however, that processing unit 420 is just blunt and discharge related network resources and further notify other to move IP network element device releasing network resources
Sequencing can change.
The those skilled in the art of those the art can understand by studying specification, disclosure and accompanying drawing and appended claims and implement other changes to the embodiment of disclosure.In the claims, word " including " is not excluded for other elements and step, and wording " one " is not excluded for plural number.In the practical application of the present invention, the function of cited multiple technical characteristics in the possible perform claim requirement of a part.Any reference in claim should not be construed as the limitation to scope.
Claims (16)
- Claims1st, it is used for the method that mobile site resource discharges in a kind of proxy-mobile IP, it is characterised in that comprise the following steps：The network connection state of the mobile site of step a), network access equipment to being accessed is detected；Step b), proxy-mobile IP agent network element discharge its related mobile IP network resource according to the network connection state after the network connection of mobile site disconnects.2nd, the method as described in claim 1, it is characterised in that the step b) includes：Step bl), network access equipment mobile site disconnect network connection when construction one notification message be sent to the proxy-mobile IP agent network element；Step b2), proxy-mobile IP agent network element the related mobile IP network resource of the mobile site is discharged according to the notification message.3rd, the method as described in claim 1, it is characterised in that the step b) includes：Step b3), proxy-mobile IP agent network element to network access equipment inquire about mobile site network connection state；Step b4), proxy-mobile IP agent network element shelter states inquiry response and determines whether to discharge the related mobile IP network resource of the mobile site.4th, the method as described in claim 1, it is characterised in that 802. lx port access control states of the network access equipment based on the mobile site are detected to its network connection state in the step a).5th, the method as described in Claims 1-4, it is characterised in that in the step b), proxy-mobile IP agent network element further notifies mobile agent to discharge the related mobile IP network resource of the mobile site.6th, a kind of network access equipment being used in proxy-mobile IP, it is characterised in that including：Detection means：Network connection state for detecting accessed mobile site；Notify device：The network connection state of mobile site described in IP agent network elements is moved for notification agent.7th, the network access equipment as described in claim 6, it is characterised in that the notice dress Put the notification message that the construction one when mobile site disconnects network connection is sent to proxy-mobile IP agent network element.8th, network access equipment as claimed in claim, it is characterised in that the notification message is that a mobile IP goes login request message.9th, the network access equipment as described in claim 6, it is characterised in that inquiry of the notice device response from the mobile I P agent network elements of agency to the network connection state of mobile site.10, network access equipment as claimed in claim 9, it is characterised in that if the mobile site being queried disconnects network connection, notifies device to provide a mobile IP and go registration response to disappear11st, network access equipment as claimed in claim 6, it is characterised in that 802. l x port access control states of the detection means based on mobile site are detected to its network connection state.12nd, a kind of proxy-mobile IP agent network element equipment, it is characterised in that including：Interface arrangement：For the network connection state for the mobile site for obtaining its agency；Processing unit：After mobile site network connection disconnection its related mobile IP network resource is discharged for the mobile site.13rd, proxy-mobile IP agent network element equipment as claimed in claim 12, it is characterised in that the interface arrangement receives the notification message for its network connection state that the network access equipment accessed from mobile site is sent.14th, the proxy-mobile IP agent network element equipment as described in claim 13, it is characterised in that the notification message is that a mobile IP goes login request message.15th, proxy-mobile IP agent network element equipment as claimed in claim 12, it is characterised in that the network access equipment that the interface arrangement is accessed to mobile site inquires about its network connection state and receives response message.16th, proxy-mobile IP agent network element equipment as claimed in claim 15, it is characterised in that the response message is that a mobile IP removes registration reply message.17th, proxy-mobile IP agent network element equipment as claimed in claim 12, it is characterised in that the further notification agent movement IP of interface arrangement mobile agent discharges the related mobile IP network resource of the mobile site. 18th, a kind of communication equipment being used in proxy-mobile IP, it is characterised in that including：Detection means：Network connection state for detecting accessed mobile site；Proxy-mobile IP agent apparatus：For discharging its related mobile IP network resource after mobile site network connection disconnection for the mobile site.19th, the communication equipment as described in claim 18, it is characterised in that 802. lx port access control states of the detection means based on mobile site are detected to its network connection state.20th, the communication equipment as described in claim 18, it is characterised in that the proxy-mobile IP agent apparatus notifies its mobile agent to discharge the related proxy mobile IP networks resource of the mobile site.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2009/000590 WO2010135851A1 (en) | 2009-05-26 | 2009-05-26 | Method for releasing mobile station resource in proxy mobile ip and apparatus thereof |
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| CN102160339A true CN102160339A (en) | 2011-08-17 |
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| WO (1) | WO2010135851A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030153325A1 (en) * | 2002-02-14 | 2003-08-14 | Sivaramakrishna Veerepalli | Method and apparatus for conserving home agent resources in mobile IP deployment |
| CN101018401A (en) * | 2006-02-10 | 2007-08-15 | 华为技术有限公司 | Processing method of the communication system network when the mobile station is lost under the free mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100581286C (en) * | 2005-10-19 | 2010-01-13 | 华为技术有限公司 | Method and system for mobile subscriber device to register mobile Internet protocol |
| CN101047710B (en) * | 2006-03-27 | 2010-05-12 | 华为技术有限公司 | Method for implementing terminal denetwork at agent mobile network protocol |
| EP1971088A1 (en) * | 2007-03-12 | 2008-09-17 | Nokia Corporation | Release of resources in a communication system |
| US20080313332A1 (en) * | 2007-06-18 | 2008-12-18 | Qualcomm Incorporated | Methods and apparatus for resource management in a communication network |
-
2009
- 2009-05-26 CN CN2009801366012A patent/CN102160339A/en active Pending
- 2009-05-26 WO PCT/CN2009/000590 patent/WO2010135851A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030153325A1 (en) * | 2002-02-14 | 2003-08-14 | Sivaramakrishna Veerepalli | Method and apparatus for conserving home agent resources in mobile IP deployment |
| CN101018401A (en) * | 2006-02-10 | 2007-08-15 | 华为技术有限公司 | Processing method of the communication system network when the mobile station is lost under the free mode |
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Application publication date: 20110817 |