Patent ID: 7362720
Filing Date: 2008-04-22
Classification: H04W,Y02D

Abstract:
1. A radio terminal unit which sends a radio base station a PS-Poll as a control packet for requesting delivery so as to receive packets buffered by the radio base station, comprising: a communication control section; a radio interface section; and a PS-Poll transmission timing changer for changing the timing of transmission of the PS-Poll according to the operation mode of one or more communication applications which are running on the radio terminal unit, wherein when the PS-Poll transmission timing changer detects a transition from a real-time processing unnecessary state, in which no communication application requires real-time processing, to a real-time processing necessary state, in which there is at least one communication application that requires real-time processing, the communication control section controls the radio interface section to transmit the PS-Poll using a timer value unrelated to a beacon interval.