CN102088743B - Method for improving switchover process in wireless local area network, network unit and system - Google Patents
Method for improving switchover process in wireless local area network, network unit and system Download PDFInfo
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- CN102088743B CN102088743B CN2009102000293A CN200910200029A CN102088743B CN 102088743 B CN102088743 B CN 102088743B CN 2009102000293 A CN2009102000293 A CN 2009102000293A CN 200910200029 A CN200910200029 A CN 200910200029A CN 102088743 B CN102088743 B CN 102088743B
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Abstract
The invention provides a method for improving the switchover process in a wireless local area network, a network unit for managing access of a terminal to the wireless local area network, a network unit for processing an association request of the terminal, and a communication system which comprises at least one terminal, at least two network units for managing the access of the terminal to the wireless local area network and at least one network unit for processing the association request of the terminal. The method comprises the following steps that: when the association request of the terminal is received, the first network unit firstly determines whether the terminal accesses at the first time or is switched from another first network unit, if so, creates a mobile outline for the terminal and uploads the created mobile outline to the second network unit, otherwise, downloads the mobile outline of the terminal from the second network unit; and the second network unit updates address information of the another first network unit comprised in the downloaded mobile outline by using the address information of the first network unit.
Description
Technical field
The relate generally to of the present invention communications field, relate to the technology of improving the handoff procedure in WLAN (wireless local area network) (WLAN) particularly.
Background technology
In recent years, WLAN has been widely used in private residence and public hot spot.Common wlan network framework mainly contains three kinds: autonomous formula framework, centralized architecture and distributed structure/architecture.Below in conjunction with Fig. 1 and the autonomous formula framework of Fig. 2 article and centralized architecture.
As shown in Figure 1, in autonomous formula framework, wireless side contact (WTP) is disposed and termination 802.11 functions fully.Therefore, each WTP can independently manage as an independent network entity on network.Access point in this network is commonly called " fat AP (access point) ".The early stage of development of disposing at WLAN, most of AP is autonomous formula AP, can be used as independently network entity and manages.
Yet, along with the evolution of WLAN technology, adopt the centralized architecture of AC and WTP to start to be subject to paying close attention to more and more widely, because centralized architecture can provide a kind of control model of structurized, stratification.
Fig. 2 shows this centralized architecture.Centralized architecture is a kind of framework of stratification, comprises a WLAN controller AC who is responsible for configuration, a plurality of WTP of control and management.The WLAN controller is also referred to as access controller (AC).802.11 function is by WTP and AC shared.With autonomous formula framework, compare, the function of the WTP in this pattern weakens to some extent, thus they be otherwise known as " thin AP ".A key component in the integral WLAN framework is access controller (AC).WTP can be connected to AC by a second layer (exchange) or the 3rd layer of (route) network.Interface between WTP and AC is responsible for following function:
-find and select an AC by WTP;
-by AC, firmware downloads is arrived to WTP-after startup and WTP triggering;
Capability negotiation between-WTP and AC;
Bidirectional identification checking between-WTP and AC;
Configuration between-WTP and AC, state and statistics exchange; With
QoS mapping between-wired and wireless network segment.
AC can and monitor the diverse access point in the zone that it controls by configuration, carries out RRM (RRM) and the function such as AP detection maliciously.The scope of these functions can be different because of the difference of supplier's deployment way.The other critical function that AC provides is mobile management.WTP can be by finding request message, and discovery can be for the AC connected.One or more AC (according to the difference of network topology) can these request messages of response.Communication between AC and WTP is undertaken by User Datagram Protoco (UDP) (UDP).
At present, " the WiFi wireless city " based on WLAN set up in many big cities.Except the limited mobility of the WiFi of " local area network (LAN) ", become more and more important for WiFi travelling carriage (MS) provides global mobility/roaming function, this means and can provide continuous connection for it when different WLAN crosses over different AP and roamed WiFi user.IEEE 802.11 agreements that comprise IEEE802.11r and IEEE 802.11f only support to be limited to " inside " the local switching between the AP in the same WLAN with same extended service set (ESS) and same distributed system (DS).For across IP subnet situation, mobile IPv 4/v6 (MIPv4/v6) technology can provide general 3 layer-two mobilities management, support MS the different WLAN/ESS of leap switching and allow MS to keep connecting can to arrive.On the other hand, the wireless access point control has been proposed and (CAPWAP) model is provided and relevant technology to adapt to the management to WLAN, particularly for extensive wlan network.
Between transfer period, context transfer is for accelerating handoff procedure and then realizing that for seamless switching be very important.Yet, if occur across the switching between AC, current wireless side contact (WTP) is at first received the associated request again of the BSSID (BSSID) that comprises last WTP.Yet, because the context of all terminals (STA) all is stored in access controller (AC), even know the IP address of last WTP, current WTP also still can't be known the AC of last WTP and can not send the AC of context transfer request to last WTP.Thereby context transfer can't realize.In addition, in a large-scale wlan system, when terminal produces the roaming across the IP subnet, need to start mobile IP technology to keep the connectivity of terminal.
For example, IEEE802.11r provides the fast transfer mode of Over-DS, and terminal can be initiated handover request to target WTP by current WTP, and target WTP judges whether to allow this terminal access by handover request.In the situation that do not lose current connection, terminal can be initiated handoff procedure to target WTP in advance.But there is following problem: one, if target WTP and current WTP do not belong to same AC management, the AC of target WTP (being called target AC) is for quick switching, need to do in advance switching prepares, for example target AC need to know the current business of moving of terminal, service quality (QoS) parameter and safety certification parameter are so that predictive authentication make the processing procedures such as corresponding resource reservation, this AC (being called current AC) that just needs target AC to contact current WTP connection carries out contextual transmission, obtains above-mentioned data and relevant parameter and does the switching preparation.But, under CAPWAP, target AC can't find current AC rapidly; Two, if this handoff procedure relates to the switching of IP subnet, no matter whether use the CAPWAP model, for mobile IPv 4, rely on existing scheme (for example IEEE802.11r/f), target WTP/AC can't obtain the mobile agent address (comprising hometown-agent-address and external agent address) of terminal, also just can't register in advance for this starting terminal Mobile IP, can't complete final quick switching.
Yet, according to CAPWAP, do not exist a kind ofly can solve the scheme that current WTP can't find the last AC of STA and can't complete the problem that switch contexts shifts.
Summary of the invention
The objective of the invention is to solve the problems of the technologies described above.According to an aspect of the present invention, a kind of method for improvement of the handoff procedure in WLAN (wireless local area network) has been proposed, the method comprises: when receiving the association request of self terminal, at first the first network unit is judged that described terminal accesses first or is come from another first network unit switching, if described first network unit judges that described terminal is to access first, for this terminal, create mobile profile and the mobile profile be created is uploaded to the second network unit, if described first network unit is judged described terminal and is come from described another first network unit switching, from described second network unit, download the mobile profile of described terminal, and described second network unit upgrades the address information of described another first network unit comprised in the mobile profile be downloaded by the address information of described first network unit, wherein, described mobile profile comprises address information and the home agent of this terminal and the address information of Foreign Agent of described terminal, and the address information that also comprises described first network unit when described mobile profile is created, or when being downloaded, described mobile profile also comprises the address information of described another first network unit.
According to another aspect of the present invention, proposed a kind of for office terminal the network element to the access of WLAN (wireless local area network), this network element comprises: decision maker, for judging that when receiving the association request of self terminal described terminal accesses first or coming from another network element switching; Mobile profile creation apparatus, if for judging that described terminal is access first create mobile profile and the mobile profile be created is uploaded to the second network unit as this terminal; Mobile profile download apparatus, if come from described another network element switching for judging described terminal, from described second network unit, download the mobile profile of described terminal, wherein, described mobile profile comprises address information and the home agent of this terminal and the address information of Foreign Agent of described terminal, and also comprises the address information of described first network unit or also comprise the address information of described another first network unit when described mobile profile is created when described mobile profile is downloaded.
According to another aspect again of the present invention, a kind of network element of the associated request for the treatment of terminal has been proposed, its with according to of the present invention for office terminal to another network element of the access of WLAN (wireless local area network) alternately to improve the handoff procedure of WLAN (wireless local area network), described network element comprises: mobile profile updating device, for upgrade the address information of previous described another network element that the mobile profile of this terminal comprises by the address information of current described another network element of this terminal when described terminal is switched, wherein, the address information that described mobile profile comprises described terminal, the address information of the address information of described another network element and the home agent of this terminal and Foreign Agent.
According to another aspect again of the present invention, a kind of communication system has been proposed, it comprises: at least one terminal; At least two according to of the present invention for office terminal the network element to the access of WLAN (wireless local area network); With at least one network element according to the associated request for the treatment of terminal of the present invention.
The accompanying drawing explanation
By reading the explanation to the specific embodiment of the invention below in conjunction with accompanying drawing, above-mentioned and other feature and advantage of the present invention will become more obvious.Wherein:
Fig. 1 shows the autonomous formula framework of WLAN;
Fig. 2 shows the centralized architecture of WLAN;
Fig. 3 shows according to the SMP attribute in exemplary extended EAP message of the present invention;
Fig. 4 is according to an embodiment of the invention for improvement of the flow chart of the method for the handoff procedure in WLAN (wireless local area network);
Fig. 5 is the block diagram of network element according to an embodiment of the invention; With
Fig. 6 is the block diagram of network element according to an embodiment of the invention.
Embodiment
Basic thought of the present invention is that the mobile profile (SMP, STA ' sMobility Profile) by creating a kind of terminal makes new WTP/AC can find efficiently and easily old WTP/AC.Under the CAPWAP pattern, this SMP forms by hexa-atomic group, i.e. SMP (STAMAC@, WTP MAC@, WTP IP@, AC IP@, HA IP@, FA IP@).This SMP is usingd the MAC Address of terminal STA as index and is stored in aaa server.Fig. 3 shows the SMP attribute in expansion EAP message as an example, and wherein, HA (Home Agent) address and FA (Foreign Agent) address are respectively the IP addresses of home agent and the Foreign Agent of this terminal.
When STA accesses WLAN first, after this terminal of success identity, by AC, create SMP and by Extensible Authentication Protocol (EAP) message of expanding, it is uploaded to aaa server.Thus, under the AC model, can construct based on SMP the crucial link information of STA.In the situation that the STA roaming, when receiving associated request again, when authenticating by aaa server, new WTP/AC downloads SMP from aaa server.New WTP/AC can obtain the address information of the previous WTP/AC/FA/HA of STA from SMP, therefore can judge whether easily to need to start the process of MIP.If need to start MIP, can trigger easily MIP registration and context transfer for switching fast.Simultaneously, aaa server also should upgrade with the address of new WTP/AC the address of the WTP/AC in original SMP.
It should be pointed out that SMP creates and be uploaded to aaa server by fat AP if the CAPWAP model is used " fat AP " structure as shown in Figure 1.Now, SMP consists of five-tuple, i.e. SMP (STA MAC, AP MAC, AP IP, HA IP, FA IP).
Should also be noted that target WTP/AC can't find the SMP of terminal at the local AAAL server connected when the territory internetwork roaming occurs, at this moment can be to a upper AAAH server lookup SMP at terminal place, prerequisite is that AAAH and AAAL have roaming agreement to exist.
Like this, by creating SMP, move profile, overcome the context transfer problem produced in CAPWAP, accelerated mobility and switching simultaneously.
Below with reference to Fig. 4, the method for improvement of the handoff procedure in WLAN (wireless local area network) is described according to an embodiment of the invention.The method of the present embodiment goes for for example network architecture shown in prior figures 1 or 2, being described in this and no longer repeating about the above-mentioned network architecture.
As shown in Figure 4, in step 401, when receiving the association request of self terminal, at first the first network unit is judged that described terminal accesses first or is come from another first network unit switching.Here, described first network unit and another first network unit can be for example fat AP as shown in Figure 1 or AC as shown in Figure 2.Particularly, in the present embodiment, when receiving the association request that STA sends, fat AP or AC for example can search for the SMP (may be attended by terminal aaa authentication process) of this STA while receiving associated request in this aaa server by the MAC Address of STA, if not finding the SMP of this STA and this terminal is not that the adjacent domains switching is come, think to access first; If this SMP exists, judge that the STA switching comes.It should be pointed out that if judge that by aaa authentication this terminal is other management domain terminal, switch to the switching between management domain, local AAAL server also will carry out mutual communication with the local AAAH server of terminal, searches for the SMP of this terminal.
In optional embodiment, if this wlan system has been used IEEE 802.11r agreement, fat AP or AC can be judged by the association request, because access for the first time and switch corresponding request, are different.
In step 402, if described first network unit judges that described terminal is to access first, for this terminal, create mobile profile and the mobile profile be created is uploaded to the second network unit.Here, the described mobile profile be created can be for example SMP, and described second network unit can be for example aaa server.Particularly, in the present embodiment, if fat AP or AC judge that in step 401 STA is as access first, this fat AP or AC create its SMP and this SMP are uploaded in aaa server for this terminal.
It should be pointed out that in the situation that, without AC, described SMP is five-tuple, i.e. SMP (STA MAC@, AP MAC@, AP IP@, HA IP@, FA IP@); In the situation that AC, described SMP is hexa-atomic group, i.e. SMP (STA MAC@, WTP MAC@, WTP IP@, AC IP@, HA IP@, FA IP@).
In step 403, if described first network unit is judged described terminal and is come from described another first network unit switching, from described second network unit, download the mobile profile of described terminal, and described second network unit upgrades the address information of described another first network unit comprised in the mobile profile be downloaded by the address information of described first network unit.Here, the described mobile profile be downloaded can be for example SMP.Particularly, in the present embodiment, if fat AP or AC judge STA and come from another fat AP or AC switching in step 401, from aaa server, download the SMP of this STA, and this aaa server is replaced in this SMP the previous fat AP that comprises or MAC and/or the IP address of AC with the MAC of current fat AP or AC and/or IP address.
Known by above description, the method of the handoff procedure in the improvement WLAN (wireless local area network) of employing the present embodiment, owing to when carrying out switching fast, will inevitably between current AC/AP and target AC/AP, carrying out contextual transmission, can, so that target AC/AP finds the address information (current AC/AP) of the link network element of terminal fast, communicate thus the contextual information (context) of exchange termination between target AC/AP and current AC/AP by creating SMP information and the current SMP of terminal being upgraded to (up-to-date mobile location information is contained in SMP).Should be understood that, if this switching relates to the handoff procedure of three layers of IP subnet, target AC/AP can judge fast that by the Mobile IP mobile agent address in SMP this switches to three layers of switching, thereby can start in advance the registration in advance of Mobile IP, fulfil the necessary process of Mobile IP ahead of schedule, for next step terminal is switched ready fast.
Under same inventive concept, according to another aspect of the present invention, provide a kind of for office terminal the network element to the access of WLAN (wireless local area network).Below just be described by reference to the accompanying drawings.
Fig. 5 shows network element 500 according to an embodiment of the invention.This network element 500 comprises decision maker 501, mobile profile creation apparatus 502 and mobile profile download apparatus 503.Decision maker 501 is for judging that when receiving the association request of self terminal described terminal accesses first or coming from another network element switching.For example, when receiving the association request of STA, if this wlan system has been used IEEE 802.11r agreement, decision maker 501 can ask to be judged by association, because access for the first time and the corresponding request of request of switching is different.If do not use IEEE 802.11r agreement, at first authenticate this STA to aaa server when decision maker 501 is received associated request and whether allow access, then search for the SMP of this STA by the MAC Address of STA in this aaa server, if do not find the SMP of this STA, think to access first; If this SMP exists, judge that the STA switching comes.If mobile profile creation apparatus 502 is for judging that described terminal is access first create mobile profile and the mobile profile be created is uploaded to the second network unit as this terminal.For example, if decision maker 501 judges that STA is as access first, mobile profile creation apparatus 502 creates its SMP and this SMP is uploaded to aaa server for this STA.If mobile profile download apparatus 503 is come from described another network element switching for judging described terminal, from described second network unit, download the mobile profile of described terminal.For example, if decision maker 501 is judged STA, from another fat AP or AC switching, come, mobile profile download apparatus 503 is downloaded the SMP of this STA from aaa server.
On the implementation, the network element 500 of the present embodiment with and the decision maker 501 comprised, mobile profile creation apparatus 502 and mobile profile download apparatus 503, can realize in the mode of software, hardware or software and hardware combination.For example, those skilled in the art are familiar with the multiple equipment that can be used to realize these parts, such as microprocessor, microcontroller, application-specific integrated circuit (ASIC) (ASIC), programmable logic device (PLD) and/or field programmable gate array (FPGA) etc.Each part of the network element of the present embodiment also can physically separate to be realized and the operation Shangdi interconnects.
In operation, the network element to the access of WLAN (wireless local area network) for office terminal of the above-mentioned embodiment in conjunction with Fig. 5 explanation, can realize the previously described method for improvement of the handoff procedure in WLAN (wireless local area network).By using this network element, owing to when carrying out switching fast, will inevitably between current AC/AP and target AC/AP, carrying out contextual transmission, can, so that target AC/AP finds the address information (current AC/AP) of the link network element of terminal fast, communicate thus the contextual information of exchange termination between target AC/AP and current AC/AP by creating SMP information and the current SMP of terminal being upgraded to (up-to-date mobile location information is contained in SMP).
Under same inventive concept, according to of the present invention again on the other hand, a kind of network element of the associated request for the treatment of terminal has also been proposed.Below just be described by reference to the accompanying drawings.
Fig. 6 shows network element 7600 according to an embodiment of the invention.This network element 600 comprises mobile profile updating device 601.Mobile profile updating device 601 for upgrading the address information of previous another network element that the mobile profile of this terminal comprises when terminal is switched by the address information of another current network element of this terminal.For example, when STA is switched, the last fat AP that comprises or MAC and/or the IP address of AC are replaced in the SMP that is stored in this STA in aaa server in the current fat AP of mobile profile updating device 601 these STA of use or the MAC of AC and/or IP address.
On the implementation, the network element 600 of the present embodiment with and the mobile profile updating device 601 that comprises can realize in the mode of software, hardware or software and hardware combination.For example, those skilled in the art are familiar with the multiple equipment that can be used to realize these parts, such as microprocessor, microcontroller, application-specific integrated circuit (ASIC) (ASIC), programmable logic device (PLD) and/or field programmable gate array (FPGA) etc.
In operation, the network element of the request of the association for the treatment of terminal of the above-mentioned embodiment in conjunction with Fig. 6 explanation, can realize the previously described method for improvement of the handoff procedure in WLAN (wireless local area network).By using this network element, owing to when carrying out switching fast, will inevitably between current AC/AP and target AC/AP, carrying out contextual transmission, can, so that target AC/AP finds the address information (current AC/AP) of the link network element of terminal fast, communicate thus the contextual information of exchange termination between target AC/AP and current AC/AP by creating SMP information and the current SMP of terminal being upgraded to (up-to-date mobile location information is contained in SMP).
Under same inventive concept, according to of the present invention again on the other hand, also proposed a kind of communication system, this communication system comprises the network element of the request of the association for the treatment of terminal of describing to the network element of the access of WLAN (wireless local area network) and at least one front embodiment for office terminal of describing at least one terminal, at least two front embodiment.In addition, described communication system can also comprise other network element, such as router etc.
For example, in the communication system of the present embodiment, SMP by being created STA by fat AP or AC by the aaa server storage with upgrade this SMP, can, so that target AC/AP can find the address information (current AC/AP) of the link network element of terminal fast, communicate thus the contextual information of exchange termination between target AC/AP and current AC/AP.Concrete operating process can, referring to above to the description of the method for improvement of the handoff procedure in WLAN (wireless local area network) according to the embodiment of the present invention, not repeated it at this.
Pass through some exemplary embodiments to the method for improvement of the handoff procedure in WLAN (wireless local area network) of the present invention although above, network element for office terminal to the access of WLAN (wireless local area network), for the treatment of the network element of the association request of terminal and comprise at least one terminal, at least two for office terminal, the network element to the access of WLAN (wireless local area network) is described in detail with at least one communication system for the treatment of the network element of the associated request of terminal, but above these embodiment are not exhaustive, those skilled in the art can realize variations and modifications within the spirit and scope of the present invention.Therefore, the present invention is not limited to these embodiment, and scope of the present invention only is as the criterion by claims.
Claims (34)
1. the method for improvement of the handoff procedure in WLAN (wireless local area network) comprises:
When receiving the association request of self terminal, at first the first network unit is judged that described terminal accesses first or is come from another first network unit switching;
If described first network unit judges that described terminal is to access first, for this terminal, create mobile profile and the mobile profile be created is uploaded to the second network unit;
If described first network unit is judged described terminal and is come from described another first network unit switching, from described second network unit, download the mobile profile of described terminal, and described second network unit upgrades the address information of described another first network unit comprised in the mobile profile be downloaded by the address information of described first network unit
Wherein, described mobile profile comprises address information and the home agent of this terminal and the address information of Foreign Agent of described terminal, and also comprises the address information of described first network unit or also comprise the address information of described another first network unit when described mobile profile is created when described mobile profile is downloaded.
2. method according to claim 1, wherein, described first network unit is judged that described terminal accesses first or comes from described another first network unit switching according to the association request message that meets the IEEE802.11r agreement.
3. method according to claim 1, wherein, whether described first network unit exists to judge that described terminal accesses first or comes from described another first network unit switching by mobile profile from described terminal to described second network unit that inquire about after receiving described associated request.
4. method according to claim 3, wherein, using the MAC Address of described terminal and inquire about the mobile profile of described terminal as index to described second network unit in described first network unit, if this moves profile and does not exist think that this terminal is to access first, if this moves profile, exist think that this terminal comes from described another first network unit switching.
5. according to the described method of any one in claim 1 to 4, wherein, described first network unit and described another first network unit are access point WTP.
6. method according to claim 5, wherein, the address information of described terminal is the MAC Address of this terminal, described first and the address information of another first network unit be its IP address and MAC Address, and the address information of the home agent of described terminal and Foreign Agent is the IP address of this home agent and Foreign Agent.
7. according to the described method of any one in claim 1 to 4, wherein, described first network unit and described another first network unit are access controller AC.
8. method according to claim 7, wherein, described mobile profile also comprises the address information of the access point of described terminal.
9. method according to claim 7, wherein, the address information of described terminal is the MAC Address of this terminal, described first and the address information of another first network unit be its IP address, the address information of the access point of described terminal is MAC Address and the IP address of this access point, and the address information of the home agent of described terminal and Foreign Agent is the IP address of this home agent and Foreign Agent.
10. according to the described method of any one in claim 1 to 4, wherein, described first network unit is to using the MAC Address of described terminal to download the mobile profile of this terminal from described second network unit as index.
11. according to the described method of any one in claim 1 to 4, wherein, between described first network unit and another first network unit and described second network unit be alternately by the expansion Extensible Authentication Protocol message realize.
12., according to the described method of any one in claim 1 to 4, wherein, described second network unit is authentication, authorization and accounting server.
13. one kind for office terminal the network element to the access of WLAN (wireless local area network), comprising:
Decision maker, for judging that when receiving the association request of self terminal described terminal accesses first or coming from another network element switching;
Mobile profile creation apparatus, if for judging that described terminal is access first create mobile profile and the mobile profile be created is uploaded to the second network unit as this terminal;
Mobile profile download apparatus, if, for judging that described terminal comes from described another network element switching, from described second network unit, download the mobile profile of described terminal,
Wherein, described mobile profile comprises address information and the home agent of this terminal and the address information of Foreign Agent of described terminal, and also comprises the address information of described network element or also comprise the address information of described another network element when described mobile profile is created when described mobile profile is downloaded.
14. network element according to claim 13, wherein, described network element is judged that described terminal accesses first or comes from described another network element switching according to the association request message that meets the IEEE802.11r agreement.
15. network element according to claim 13, wherein, whether described network element exists to judge that described terminal accesses first or comes from described another network element switching by mobile profile from described terminal to described second network unit that inquire about after receiving described associated request.
16. network element according to claim 15, wherein, described network element is usingd the MAC Address of described terminal and is inquired about the mobile profile of described terminal as index to described second network unit, if this moves profile and does not exist think that this terminal is to access first, if this moves profile, exist think that this terminal comes from described another network element switching.
17., according to claim 13 to the described network element of any one in 16, wherein, described network element and described another network element are access point WTP.
18. network element according to claim 17, wherein, the address information of described terminal is the MAC Address of this terminal, the address information of described network element and another network element is its IP address and MAC Address, and the address information of the home agent of described terminal and Foreign Agent is the IP address of this home agent and Foreign Agent.
19., according to claim 13 to the described network element of any one in 16, wherein, described first network unit and described another network element are access controller AC.
20. network element according to claim 19, wherein, described mobile profile also comprises the address information of the access point of described terminal.
21. network element according to claim 19, wherein, the address information of described terminal is the MAC Address of this terminal, the address information of described network element and another network element is its IP address, the address information of the access point of described terminal is MAC Address and the IP address of this access point, and the address information of the home agent of described terminal and Foreign Agent is the IP address of this home agent and Foreign Agent.
22., according to claim 13 to the described network element of any one in 16, wherein, described network element is to using the MAC Address of described terminal to download the mobile profile of this terminal from described second network unit as index.
23., according to claim 13 to the described network element of any one in 16, wherein, between described network element and described another network element and described second network unit is that Extensible Authentication Protocol message by expansion realizes alternately.
24., according to claim 13 to the described network element of any one in 16, wherein, described second network unit is authentication, authorization and accounting server.
25. the network element of the request of the association for the treatment of terminal, its with according to claim 13 to any one in 24 described for office terminal to another network element of the access of WLAN (wireless local area network) alternately to improve the handoff procedure of WLAN (wireless local area network), comprising:
Mobile profile updating device, for upgrade the address information of previous described another network element that the mobile profile of this terminal comprises by the address information of current described another network element of this terminal when described terminal is switched,
Wherein, the address information that described mobile profile comprises described terminal, the address information of described another network element and the home agent of this terminal and the address information of Foreign Agent.
26. network element according to claim 25, wherein, described network element is the index as the mobile profile of this terminal by the MAC Address of described terminal.
27., according to the described network element of claim 25 or 26, wherein, described another network element is access point WTP.
28. network element according to claim 27, wherein, the address information of described terminal is the MAC Address of this terminal, the address information of described another network element is its IP address and MAC Address, and the address information of the home agent of described terminal and Foreign Agent is the IP address of this home agent and Foreign Agent.
29., according to the described network element of claim 25 or 26, wherein, described another network element is access controller AC.
30. network element according to claim 29, wherein, described mobile profile also comprises the address information of the access point of described terminal.
31. network element according to claim 29, wherein, the address information of described terminal is the MAC Address of this terminal, the address information of described another network element is its IP address, the address information of the access point of described terminal is MAC Address and the IP address of this access point, and the address information of the home agent of described terminal and Foreign Agent is the IP address of this home agent and Foreign Agent.
32. according to the described network element of claim 25 or 26, wherein, between described network element and described another network element be alternately by the expansion Extensible Authentication Protocol message realize.
33., according to the described network element of claim 25 or 26, wherein, described network element is authentication, authorization and accounting server.
34. a communication system comprises:
At least one terminal;
At least two according to claim 13 to the described network element of any one in 24; With
At least one is according to the described network element of any one in claim 25 to 33.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102000293A CN102088743B (en) | 2009-12-02 | 2009-12-02 | Method for improving switchover process in wireless local area network, network unit and system |
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| CN2009102000293A CN102088743B (en) | 2009-12-02 | 2009-12-02 | Method for improving switchover process in wireless local area network, network unit and system |
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| CN102088743A CN102088743A (en) | 2011-06-08 |
| CN102088743B true CN102088743B (en) | 2013-12-04 |
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| EP3041293B1 (en) * | 2013-08-30 | 2020-07-22 | Huawei Technologies Co., Ltd. | Wtp access method, management method, apparatus and system |
| CN103561405A (en) * | 2013-10-23 | 2014-02-05 | 杭州华三通信技术有限公司 | Method and device for countering Rogue AP |
| CN111629422B (en) * | 2020-06-07 | 2021-04-02 | 深圳市乙辰科技股份有限公司 | Wireless equipment setting method and device and readable storage medium |
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| CN1571578A (en) * | 2003-04-29 | 2005-01-26 | 三星电子株式会社 | Method of managing a mobility profile of a mobile node using a localized mobility management |
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