Patent ID: 7567539

Claim:
A wireless LAN (Local Area Network) system comprising: a communication terminal connectable to a wireless LAN; and a LAN control apparatus to be connected to said communication terminal via said wireless LAN in such a manner as to be able to exchange communication data with said communication terminals, wherein said communication terminal including policy request means which requests of said LAN control apparatus for a QoS (Quality of Service) management table as a QoS policy to manage QoS of said communication data at a time of establishing connection to said wireless LAN, analyzing/setting means which analyzes said QoS management table sent from said LAN control apparatus in response to a request made by said policy request means and sets QoS setting data of said communication terminal in an updatable manner based on a result of that analysis, and setting-data transmission means which sends said QoS setting data, set by said analyzing/setting means, to said LAN control apparatus, and said LAN control apparatus including table holding means which holds said QoS management table in an updatable manner, table transmission means which sends said QoS management table in response to said request from said communication terminal, policy reconstruction means which updates said QoS setting data, sent from said communication terminal, on said QoS management table to reconstruct said QoS policy, and QoS control means which executes QoS control on said communication data with said communication terminal in accordance with said QoS policy which is determined by said QoS management table.