Patent ID: 7773574
Filing Date: 2010-08-10
Classification: H04W

Abstract:
1. A scheduling method by a point coordinator (PC) of a wireless communication system including a plurality of terminals and the PC for providing a network access service to the terminals, the scheduling method comprising the steps of: classifying the terminals into delay-sensitive terminals and delay-insensitive terminals according to their traffic types; setting an initial value and a maximum value of a poll failure counter of each of the delay-sensitive terminals; polling each of the delay-sensitive terminals; determining whether there exists a delay-sensitive terminal of which a present value of the poll failure counter is less than the maximum value; and if there exists no delay-sensitive terminal of which the present value of the poll failure counter is less than the maximum value, sequentially polling the delay-sensitive terminals and the delay-insensitive terminals, if the present value is less than the maximum value at any of the delay-sensitive terminals, the polling of each of the delay-sensitive terminals comprises: