Access point device and system for wireless local area network, and related methods

摘要

The present invention provides an access point device and system for a wireless local area network, and related methods thereof. On the access point device, a same ESS is divided into a plurality of VLANs, wherein the access point device comprises a broadcast key management module which is used for managing broadcast keys encrypting broadcast information and a broadcast key storage device which is used for storing the broadcast keys. The broadcast keys are stored in the broadcast key storage device in a way of corresponding to VLAN IDs of the VLANs, and the broadcast key management module can obtain the corresponding broadcast keys through the VLAN IDs.

主权项

1. An access point device for a wireless local area network the network comprising a plurality of wireless devices and the access point device, wherein on the access point device:
a same extended service set (ESS) is divided into a plurality of virtual local area networks (VLANs), wherein broadcast keys are stored in a broadcast key storage device of the access point device so as to correspond to virtual local area network identifiers (VLAN IDs) of the VLANs by being indexed through the VLAN IDs so as to realize information isolation among the VLANs, and the access point device comprises memory and a processor, the processor executing the following steps: issuing a corresponding broadcast key, which includes the following sub-steps:
acquiring a wireless device ID of a wireless device accessing the wireless local area network;acquiring a VLAN ID of a VLAN to which the wireless device belongs through the acquired wireless device ID,acquiring the corresponding broadcast key through the acquired VLAN ID, and issuing the acquired corresponding broadcast key to the wireless device; encrypting information, in which the broadcast key corresponding to the VLAN ID of the VLAN is utilized to encrypt information broadcast to the VLAN; and broadcasting the encrypted information, wherein when the wireless device accessing the ESS leaves the ESS, the processor executes the following steps for the VLAN to which the wireless device belongs:
acquiring the VLAN ID of the VLAN whose broadcast keys needs to be updated;acquiring the corresponding to-be-updated broadcast key through the acquired VLAN ID, andupdating the acquired corresponding to-be-updated broadcast key, andissuing an updated broadcast key to all wireless devices accessing the VLAN and then broadcasting encrypted information utilizing the updated broadcast key.