CN1852192A - Network identifying method in wireless local network - Google Patents
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Abstract
The wireless local area network includes at least one basic service set (BSS) in architecture of including multiple terminal devices. The BSS includes at least one extension service set (ESS). The method includes steps: ESS id of using unique id is adopted in the ESS; in time of scanning channels, the method adds id parameters for ESS; when terminal device is initial accessed, setting up id parameters of ESS as broadcast address of medium access control (MAC); otherwise, setting up it as specific id of ESS; in selecting network, the method synchronizes corresponding ESS; authentication and association are carried out for id of ESS as parameter by network system. Since setting up a new id of ESS in use for identifying each terminal device, and BSS id in different ESS, the method can unifies id globally. Thus, the invention meets need of quick roam for 802.11 terminals under same ESS.
Description
Technical field
The present invention relates to a kind of method of Network Recognition, the Network Recognition method in particular a kind of WLAN (wireless local area network).
Background technology
In the prior art, WLAN (WLAN (wireless local area network)) technology because of its wireless penetration characteristics in networking, can compare two-forty wired and insert with and advantage such as cheap be subjected to the welcome in market deeply.Begun to replace wired occasions such as family, campus, hotel, enterprise's office that are widely used at present, and begun to be widely deployed in public situation, the access service of public wireless broadband data is provided as a kind of WiMAX access technology.ISO/IEC 8802-11:1999 " telecommunication and information exchange local net and metropolitan area network particular requirement the 11st part between information technology system: WLAN body access control (MAC; Media AccessControl address is the sign of identification LAN node) and physical layer (PHY) standard " is the international standard of WLAN, corresponding IEEE 802.11 standards of its content.
China has also issued WLAN standard GB/T 15629.11-2003, and the main difference of itself and international standard is the security mechanism in access control.In fact, the wlan product of market extensive use mainly is the additional standard at IEEE 802.11 of IEEE 802.11 standards project groups issue, comprises IEEE802.11b, IEEE 802.11g, IEEE 802.11a etc.Wherein, 802.11b, 802.11g work in the 2.4Hz frequency range, and 802.11a is operated in the 5GHz frequency range.802.11b the physical layer rate of supporting can reach 11Mb/s, the physical layer rate that 802.11g, 802.11a support can reach 54Mb/s.At present IEEE 802.11 working out support high-throughput more standard 802.11n to support various real time business and multimedia application better, increase power system capacity.
Wlan system according to IEEE 802.11 standard definitions, its basic structure as shown in Figure 1, STA (Station) refers to comprise the terminal equipment of IEEE 802.11 wireless lan interfaces, and many in the market mobile phones are all supported wireless lan interfaces, the also built-in wireless lan interfaces of portable machine.Not with the equipment of wireless lan interfaces, can provide wireless lan interfaces for some by the mode of WLAN wireless network card is installed.
As shown in Figure 1, AP (Access Point) is an access point, the base station that is equivalent to the mobile network, its major function is to make each terminal equipment STA to communicate with other the STA or the relevant device of cable network, for example: a plurality of STA are linked into WLAN (wireless local area network) of an AP composition and communicate, the STA that is linked into different AP forms a local area network (LAN) and communicates, and the relevant device of STA and cable LAN communicates or the like.Be associated with a STA under the AP and just constituted a Basic Service Set (BSS).
Wherein, DS (Distribution System) is a dissemination system, makes and can form a big local area network (LAN) between the different Basic Service Set BSS and between BSS and the cable LAN, is referred to as extended service set ESS; Wherein portal is meant provides the logical point that MAC service data unit (MSDUs) is transmitted between DS and the cable LAN.
Defined service set SSID in 802.11 standards, also be referred to as ESSID sometimes, be used to identify an extended service set ESS, promptly when BSS passed through ESS of the interconnected composition of DS, the SSID that each AP goes up configuration was identical.But, because the definition of SSID is the standard of an overall situation coding not, even two fully independently different networks, the also identical SSID of possible configuration, therefore, in actual applications, even the SSID of two BSS configurations is the same, can not determine thus that these two BSS belong to same ESS.
When the BSS of a STA in ESS roams into another BSS,, therefore can not between STA and ESS, set up any relation in fact because SSID can not be used to identify ESS credibly; The roaming of striding BSS is equivalent to stride two different physical networks, and the complexity that this has caused STA and new BSS to rebuild related particularly security association is as needs pre-authentication or re-authentication etc.And prior art carries out target BS S when selecting before roaming, can't judge that whether target BS S belongs to same ESS with current BSS.
Therefore, also there is defective in prior art, and awaits improving and development.
Summary of the invention
The object of the present invention is to provide the method for Network Recognition in a kind of WLAN (wireless local area network), the extended service set ESS notion of corresponding 802.11 standard definitions, a kind of ESS identifying schemes has been proposed, the different ESS of energy unique identification, and the demand of satisfied 802.11 terminals fast roaming under same ESS.
For achieving the above object, technical scheme of the present invention comprises:
The method of Network Recognition in a kind of WLAN (wireless local area network), described WLAN (wireless local area network) comprise that a plurality of terminal equipment frameworks form, and described a plurality of terminal equipments are formed at least one Basic Service Set, and described Basic Service Set is formed at least one extended service set again; Described method comprises step:
A, described extended service set is adopted the uniquely identified extended service set identification, when carrying out scan channel, increase this extended service set identification parameter;
B, when terminal equipment inserts for the first time, its extended service set identification parameter is set to media interviews control broadcast address; Otherwise, be set to specific extended service set identification;
If C, the extended service set identification parameter of described terminal equipment is not media interviews control broadcast address when network selecting, judge then whether respective channels belongs to the extended service set with the identical extended service set identification of this terminal equipment, then be synchronized to corresponding extended service set in this way, and be that parameter is carried out authentication and related with network system with this extended service set identification.
Described method, wherein, described extended service set identification is the media interviews control broadcast address of corresponding extended service set.
Described method, wherein, described extended service set is expressed as the entry address of corresponding extended service set and external network intercommunication.
Described method, wherein, the extended service set under the described Basic Service Set is broadcasted its extended service set identification by increasing the territory extended service set in 802.11 beacon frames.
Described method wherein, when described Basic Service Set belongs to a plurality of extended service set, is provided with the tabulation of an extended service set identification at described territory extended service set.
Described method wherein, also comprises: increase the corresponding field extended service set and carry its extended service set identification in the acknowledgement frame of scan channel.
Described method wherein, is not carried extended service set identification or extended service set identification when being broadcast address in the described acknowledgement frame, the corresponding domain extended service set identification is the extended service set identification of this Basic Service Set.
Described method, wherein, described WLAN (wireless local area network) corresponds to one deck level framework according to described extended service set identification, and this level framework comprises: a Basic Service Set level and an extended service set level; One authentication server connects this two-level network, and carries out authentication between each terminal equipment and the authentication server, consult master key, and generate corresponding extended service set domain key, and the Basic Service Set domain key is a session key.
Described method, wherein, described session key generates according to described extended service set domain key, and described extended service set domain key generates according to the master key of consulting between described terminal equipment and the authentication server.
The method of Network Recognition in a kind of WLAN (wireless local area network) provided by the present invention, because being provided with a new extended service set identification discerns with the sign that Basic Service Set is concentrated in different expansion service to be used for each terminal equipment, can unify sign, and satisfy the demand of 802.11 terminals fast roamings under same ESS.
Description of drawings
Fig. 1 is the network architecture diagram of 802.11 prescribed by standard of prior art;
Fig. 2 is the network architecture schematic diagram of WLAN (wireless local area network) of the present invention;
The flow chart of the drive sweep when Fig. 3 a is the scan channel of the inventive method;
The flow chart of the active scan when Fig. 3 b is the scan channel of the inventive method;
Fig. 4 is the network architecture schematic diagram of the WLAN (wireless local area network) of the inventive method.
Embodiment
Below in conjunction with accompanying drawing, will carry out comparatively detailed explanation to each preferred embodiment of the present invention.
In the method for Network Recognition, it is provided with new ESS sign: an extended service set identification ESSID in the WLAN (wireless local area network) of the present invention, and the sign BSSID that adopts at the Basic Service Set BSS of existing 802.11 standard definitions is the MAC Address of AP.For ESS, adopt SSID, be different from BSSID, SSID is a character string, unique application at present is that the user distinguishes upward different customer group or business of same AP.Therefore even two BSS are provided with same SSID, and do not mean that these two BSS just belong to same ESS, SSID does not have the coding method of the overall situation yet.Therefore, in the methods of the invention, adopt the define method of similar BSSID, also use a MAC Address to identify an ESS, be referred to as ESSID.Because MAC Address has unique identification of overall importance, therefore different ESS can come unique identification by MAC Address, and like this, different ESS have just had different ESSID.
Among the embodiment specific to the ESS of the inventive method, its ESSID can be the entry address (Entrance Address) of this ESS and external network intercommunication.When this ESS is a kind of isolated island form fully, when promptly not getting in touch with any external system, its ESSID can be set at the MAC broadcast address.
In a WLAN (wireless local area network) physical network of the inventive method, can only comprise a BSS, also an ESS can be only comprised, or also a plurality of ESS can be comprised.And the inventive method allows a BSS to belong to a plurality of ESS simultaneously, for example when there is the inlet of a plurality of and external network intercommunication in this local area network (LAN).Because the terminal equipment in the WLAN (wireless local area network) has mobility, therefore, the framework of WLAN (wireless local area network) is different from cable LAN, has certain flexibility.This inclusion relation flexibly between ESS and the BSS as shown in Figure 2, BSS# 1 and BSS# 2 had both belonged to ESS# 1, belonged to ESS# 2 again; BSS# 1 and BSS# 2 and BSS# 3 belong to ESS# 1, and BSS# 1 and BSS# 2 and BSS# 4 belong to ESS# 2.
The operation principle of the inventive method comprises: in the network selecting based on ESSID, a STA inserts a WLAN (wireless local area network) and has following several situations: 1) STA inserts first, does not know the ESSID of this network; 2) STA requires to insert specific ESS, knows its ESSID; For example, the situation that roaming inserts, this moment, STA inserted specific ESS, but required to roam into another BSS in this ESS from current BSS.
Network selecting method based on ESSID is exactly when carrying out scan channel, to increase parameter ESSID.When STA inserted first, ESSID was set to the MAC broadcast address; Otherwise be set to specific ESSID, i.e. extended service set identification under it.When parameter ESSID was broadcast address, network selecting depends on other parameters, and was same as the prior art.When parameter ESSID is not broadcast address, have only when respective channels belongs to this ESS and promptly has with the same ESSID of terminal, just allow to be synchronized to corresponding ESS, and to be parameter with this ESSID carry out authentication, processing such as related with system.
After increasing extended service set identification ESSID in the wireless network of the inventive method, can broadcast the ESSID that this BSS belongs to by increasing corresponding field ESS at 802.11 beacons (Beacon) frame, when a BSS belonged to a plurality of ESS simultaneously, this territory comprised an ESSID tabulation; Simultaneously 802.11 inquire after frame Probe Request and can increase corresponding field ESS and carry ESSID, belong to the BSS of corresponding ESS with active scan; Shown in Fig. 3 a and Fig. 3 b, IEEE 802.11 Probe Response increase corresponding field ESS and carry ESSID, and when 802.11 Probe Request did not carry ESSID or ESSID and are broadcast address, this territory ESSID be the affiliated ESSID of this BSS; Or when BSS belonged to the corresponding ESS of the entrained ESSID of Probe Request, ESSID equaled corresponding ESSID value among the Probe Request in this territory.Drive sweep in the inventive method is initiated STA by BSS, and active scan is initiatively initiated by STA.
The inventive method is after determining ESSID, and 802.11 authentication processes and association process can increase the ESSID parameter, make authentication process and association process and ESS associate, and make things convenient for its authentication.When ESSID is broadcast address or this territory when empty, above-mentioned relevant treatment flow process is identical with original 802.11 standards.
After the inventive method is provided with parameter ESSID, just WLAN (wireless local area network) can be corresponded in the level security architecture, in WLAN (wireless local area network), be divided into two-stage: ESS level and BSS level; As shown in Figure 4, BSS can framework ESS arranged in a crossed manner in the described hardware net, and an authentication server AS connects the hardware net that this is divided into two-stage, and terminal equipment STA is respectively by session key PTK and BSS communication, connect ESS by the ESS cipher key communication, connect authentication server AS by master key.
Based on this hierarchical structure, as STA first during connecting system, carry out authentication between STA and the authentication server AS, consult master key MSK, and generate corresponding ESS domain key, and the BSS domain key is session key PTK.Session key between STA and the AP generates according to the ESS domain key, and ESS domain key (ESS KEY) then generates according to the master key of consulting between STA and the AS.Therefore, when roaming between the BSS of STA in an ESS, only need consulting session key again, do not need described pre-authentication of 802.11i or re-authentication, reduced the flow process that roaming is handled, realized conveniently roaming communication.
In the level framework of the invention described above, in the life cycle of MSK, can carry out the regular update of ESS KEY, in the life cycle of ESS KEY, allow to carry out the regular update of PTK.The definition of PTK, MSK is corresponding with PTK, the MSK definition of IEEE 802.11i, and unique difference is that the PTK of 802.11i generates according to MSK, and the PTK in the inventive method generates according to ESS KEY.
Each key of the inventive method has represented to consult bipartite trusting relationship, and it is noted that, above-mentioned configuration diagram only shows the basic framework of the inventive method system, in actual applications, as described authentication server may and described level network between can increase other hierarchical links, and these are obviously also in technical conceive scope of the present invention.
The ESS notion of corresponding 802.11 definition of the inventive method, a kind of ESS identifying schemes is provided, one new parameter ESSID promptly is set, utilize this unique identification parameter of overall importance of MAC Address, the ESS that sign that can be unique is different, and satisfied the demand of 802.11 terminals fast roamings under same ESS.
The inventive method can be carried out network selecting based on this unique identification, and security mechanism is corresponded to a kind of hierarchical structure, increases ESS-KEY, and desired pre-authentication of 802.11i or re-authentication when having avoided ESS interior span BSS roaming realize that roaming is rapider.
Should be understood that above-mentioned description at specific embodiment is comparatively concrete, can not therefore think the restriction to patent scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.
Claims (9)
1, the method for Network Recognition in a kind of WLAN (wireless local area network), described WLAN (wireless local area network) comprise that a plurality of terminal equipment frameworks form, and described a plurality of terminal equipments are formed at least one Basic Service Set, and described Basic Service Set is formed at least one extended service set again; Described method comprises step:
A, described extended service set is adopted the uniquely identified extended service set identification, when carrying out scan channel, increase this extended service set identification parameter;
B, when terminal equipment inserts for the first time, its extended service set identification parameter is set to media interviews control broadcast address; Otherwise, be set to specific extended service set identification;
If C, the extended service set identification parameter of described terminal equipment is not media interviews control broadcast address when network selecting, judge then whether respective channels belongs to the extended service set with the identical extended service set identification of this terminal equipment, then be synchronized to corresponding extended service set in this way, and be that parameter is carried out authentication and related with network system with this extended service set identification.
2, method according to claim 1 is characterized in that, described extended service set identification is the media interviews control broadcast address of corresponding extended service set.
3, method according to claim 1 is characterized in that, described extended service set identification is the entry address of corresponding extended service set and external network intercommunication.
4, method according to claim 1 is characterized in that, the extended service set under the described Basic Service Set is broadcasted its extended service set identification by increasing the territory extended service set in 802.11 beacon frames.
5, method according to claim 4 is characterized in that, when described Basic Service Set belongs to a plurality of extended service set, the tabulation of an extended service set identification is set at described territory extended service set.
6, method according to claim 1 is characterized in that, also comprises: increase the corresponding field extended service set and carry its extended service set identification in the acknowledgement frame of scan channel.
7, method according to claim 6 is characterized in that, does not carry extended service set identification or extended service set identification in the described acknowledgement frame when being broadcast address, and the corresponding domain extended service set identification is the extended service set identification of this Basic Service Set.
8, method according to claim 1 is characterized in that, described WLAN (wireless local area network) corresponds to one deck level framework according to described extended service set identification, and this level framework comprises: a Basic Service Set level and an extended service set level; One authentication server connects this two-level network, and carries out authentication between each terminal equipment and the authentication server, consult master key, and generate corresponding extended service set domain key, and the Basic Service Set domain key is a session key.
9, method according to claim 8 is characterized in that, described session key generates according to described extended service set domain key, and described extended service set domain key generates according to the master key of consulting between described terminal equipment and the authentication server.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510100430 CN1852192A (en) | 2005-10-21 | 2005-10-21 | Network identifying method in wireless local network |
| PCT/CN2006/002524 WO2007045147A1 (en) | 2005-10-21 | 2006-09-25 | An accessing network method, system and terminal of the wireless local area network terminal |
| CNA2006800123931A CN101160833A (en) | 2005-10-21 | 2006-09-25 | Method of accessing network for wireless LAN terminal, system and terminal thereof |
| US11/584,407 US20070153732A1 (en) | 2005-10-21 | 2006-10-20 | Method for a wireless local area network terminal to access a network, a system and a terminal |
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| CN 200510100430 CN1852192A (en) | 2005-10-21 | 2005-10-21 | Network identifying method in wireless local network |
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| CN 200510100430 Pending CN1852192A (en) | 2005-10-21 | 2005-10-21 | Network identifying method in wireless local network |
| CNA2006800123931A Pending CN101160833A (en) | 2005-10-21 | 2006-09-25 | Method of accessing network for wireless LAN terminal, system and terminal thereof |
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| CNA2006800123931A Pending CN101160833A (en) | 2005-10-21 | 2006-09-25 | Method of accessing network for wireless LAN terminal, system and terminal thereof |
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| CN101889419A (en) * | 2007-10-08 | 2010-11-17 | 高通股份有限公司 | Provisioning communication nodes |
| WO2010149072A1 (en) * | 2009-06-25 | 2010-12-29 | 华为技术有限公司 | Method, system for processing information and mobility management network element |
| CN102413200A (en) * | 2011-11-04 | 2012-04-11 | 北京播思软件技术有限公司 | Method for customizing wireless hot spot service set identifier (SSID) and apparatus thereof |
| CN103167586A (en) * | 2013-03-01 | 2013-06-19 | 北京傲天动联技术股份有限公司 | Wireless terminal access and reselecting method based on access point (AP) cluster |
| CN104869621A (en) * | 2015-06-12 | 2015-08-26 | 联想(北京)有限公司 | Method and device for network awareness |
| US9167505B2 (en) | 2007-10-08 | 2015-10-20 | Qualcomm Incorporated | Access management for wireless communication |
| CN105323758A (en) * | 2014-07-02 | 2016-02-10 | 上海新联纬讯科技发展有限公司 | Wireless router extended service identifier service providing method |
| CN102165827B (en) * | 2008-09-25 | 2016-11-16 | 皇家飞利浦电子股份有限公司 | Has the directional discovery protocol of coordinated Channel assignment |
| US9775096B2 (en) | 2007-10-08 | 2017-09-26 | Qualcomm Incorporated | Access terminal configuration and access control |
| CN109845335A (en) * | 2016-10-24 | 2019-06-04 | 索尼公司 | Communication equipment and communication means |
| CN111093198A (en) * | 2015-07-23 | 2020-05-01 | 中移（杭州）信息技术有限公司 | Wireless local area network data transmission method and device |
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2005
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| US9775096B2 (en) | 2007-10-08 | 2017-09-26 | Qualcomm Incorporated | Access terminal configuration and access control |
| CN101889419A (en) * | 2007-10-08 | 2010-11-17 | 高通股份有限公司 | Provisioning communication nodes |
| US9167505B2 (en) | 2007-10-08 | 2015-10-20 | Qualcomm Incorporated | Access management for wireless communication |
| US9055511B2 (en) | 2007-10-08 | 2015-06-09 | Qualcomm Incorporated | Provisioning communication nodes |
| CN107027119A (en) * | 2007-10-08 | 2017-08-08 | 高通股份有限公司 | Provisioning communication nodes |
| CN102165827B (en) * | 2008-09-25 | 2016-11-16 | 皇家飞利浦电子股份有限公司 | Has the directional discovery protocol of coordinated Channel assignment |
| CN101931935B (en) * | 2009-06-25 | 2013-09-11 | 华为技术有限公司 | Terminal access method, network equipment and communication system |
| WO2010149072A1 (en) * | 2009-06-25 | 2010-12-29 | 华为技术有限公司 | Method, system for processing information and mobility management network element |
| CN102413200A (en) * | 2011-11-04 | 2012-04-11 | 北京播思软件技术有限公司 | Method for customizing wireless hot spot service set identifier (SSID) and apparatus thereof |
| CN103167586A (en) * | 2013-03-01 | 2013-06-19 | 北京傲天动联技术股份有限公司 | Wireless terminal access and reselecting method based on access point (AP) cluster |
| CN103167586B (en) * | 2013-03-01 | 2015-08-12 | 北京傲天动联技术股份有限公司 | A kind of access of the wireless terminal based on AP cluster and reselecting method |
| CN105323758A (en) * | 2014-07-02 | 2016-02-10 | 上海新联纬讯科技发展有限公司 | Wireless router extended service identifier service providing method |
| CN104869621B (en) * | 2015-06-12 | 2019-01-15 | 联想(北京)有限公司 | A kind of Network Recognition method and apparatus |
| CN104869621A (en) * | 2015-06-12 | 2015-08-26 | 联想(北京)有限公司 | Method and device for network awareness |
| CN111093198B (en) * | 2015-07-23 | 2023-04-28 | 中移（杭州）信息技术有限公司 | Wireless local area network data transmission method and device |
| CN111093198A (en) * | 2015-07-23 | 2020-05-01 | 中移（杭州）信息技术有限公司 | Wireless local area network data transmission method and device |
| CN109845335A (en) * | 2016-10-24 | 2019-06-04 | 索尼公司 | Communication equipment and communication means |
| US11160008B2 (en) | 2016-10-24 | 2021-10-26 | Sony Corporation | Communication device and communication method |
| CN109845335B (en) * | 2016-10-24 | 2022-04-19 | 索尼公司 | Communication apparatus and communication method |
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