Patent ID: 8289938
Filing Date: 2012-10-16
Classification: H04W

Abstract:
1. An access control system in a wireless LAN system using an access point to perform access control for accesses from a plurality of client terminals, wherein said access point and each of a plurality of client terminals have a transmission device using a data transmission carrier wave frequency and a control signal transmission carrier wave frequency, wherein each of the plurality of client terminals has a memory storing priority information, wherein when the data transmission carrier wave frequency is not sensed on the wireless LAN, data are transmitted to the access point at a relevant data transmission carrier wave frequency, wherein when the data transmission carrier wave frequency is sensed on the wireless LAN, a band reservation request is sent to the access point at a relevant control signal transmission carrier wave frequency along with priority information stored in the memory, and wherein after a transmission confirmation is received from the access point for the band reservation request, data is transmitted to the access point at a relevant data transmission carrier wave frequency.