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Access method for access point and access controller

A technology for accessing controllers and access methods, applied in electrical components, wireless communication, wireless network protocols, etc., can solve problems such as user inconvenience, and achieve the effect of improving compatibility and reducing dependence

Active Publication Date: 2009-12-02
BEIJING HAN NETWORKS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous emergence of new functional requirements, the current practice of privately implementing various functional models and feature specifications of APs and ACs by different manufacturers will lead to more incompatibility between APs and ACs produced by different manufacturers. become more and more obvious, thus causing greater inconvenience to users

Method used

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  • Access method for access point and access controller
  • Access method for access point and access controller
  • Access method for access point and access controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0022] figure 1 It is a sequence diagram showing an access method of an access point and an access controller according to an embodiment of the present invention.

[0023] figure 1 In, AP represents an access point according to this embodiment, and AC represents an access controller according to this embodiment.

[0024] In step S1010, the AP discovers the AC. In this step, the AP may know the existence of the AC in advance through static configuration, or dynamically discover the AC through other mechanisms, which is not limited in the present invention.

[0025] Next, in step S1020, the AP sends capability data to the AC. Here, the capability data includes the function model supported by the AP itself and related feature specifications.

[0026] Next, in step S1030, the AC judges whether the function model supported by the AP matches itself according to the capability data received from the AP. Failed information. Otherwise, record the capability data of the AP, and se...

Embodiment 1

[0037] In CAPWAP, the AP completes AC discovery through Discovery Request messages and Discovery Response messages, and completes registration through Join Request messages and Join Response messages. On the premise of not affecting the original flow of CAPWAP, in this embodiment, a new message element is defined to describe the capabilities of the AP and AC, and by making the Discovery Request message and the Join Request message carry the message element describing the AP capability, the Discovery Response The message and the Join Response message carry the message element describing the capability of the AC to complete the capability negotiation between the AP and the AC. Specific steps are as follows.

[0038] figure 2 It is a sequence diagram showing the access method of the access point and the access controller according to Embodiment 1 of the present invention.

[0039] exist figure 2 In, AP1 represents the access point according to this embodiment, and AC1 repres...

Embodiment 2

[0053] image 3 It is a sequence diagram showing the access method of the access point and the access controller according to Embodiment 2 of the present invention.

[0054] exist image 3 Among them, AP2 is the access point according to this embodiment, and AC2-1, AC2-2, and AC2-3 are candidate access controllers according to this embodiment, that is, AP2 selects one of these three candidate access controllers to access. Hereinafter, all or part of AC2-1, AC2-2, and AC2-3 may be collectively referred to as AC2.

[0055] Embodiment 2 of the present invention differs from Embodiment 1 in that, in Embodiment 1, AP1 discovers AC1 and obtains the address of AC1 through static configuration or a DHCP discovery mechanism or a DNS discovery mechanism, while in Embodiment 2, AP2 The AC2 to be accessed is discovered through the CAPWAP discovery mechanism itself and its address is obtained. Specific steps are as follows.

[0056] In step S1210, AP2 broadcasts or multicasts a Discov...

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Abstract

The invention discloses an access method for an access point and an access controller, which comprises the following: discovery step, in which the access point discovers the access controller; negotiation step in which the access point and the access controller mutually exchange respective capacity data comprising functional models or corresponding characteristic specifications, and if the capacity data of the access point is not matched with that of the access control, the capability negotiation fails, otherwise, the capability negotiation is successful; and accessing step, if the capability negotiation is successful, the access point has an access to the access controller.

Description

technical field [0001] The invention relates to an access method for an access point and an access controller in wireless communication, in particular to an access method between an access point produced by different manufacturers and an access controller. Background technique [0002] The product architecture of WLAN (Wireless Local Area Network, wireless local area network) has evolved from a single autonomous AP (Access Point, access point) to a centralized access control system composed of AC (Access Controller, access controller) and AP. . The purpose of this evolution is to separate access control, including authentication, secure communication, mobility management, and radio frequency management, from a single AP, and be centrally controlled by the AC. [0003] CAPWAP (Control And Provisioning of Wireless Access Points, control and configuration of wireless access points) is a structural framework protocol of a WLAN access centralized control system proposed by IETF ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W80/00H04W84/12
Inventor 刘靖非范成龙
Owner BEIJING HAN NETWORKS TECH CO LTD
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