Patent ID: 7724708
Filing Date: 2010-05-25
Classification: H04W

Abstract:
1. A channel switching method for use with a wireless transmitter of a wireless peripheral device by intelligently switching a plurality of communication channels with a signal receiving device, said channel switching method comprising steps of: making a packet error rate check to count number of continuous failed packets when said wireless transmitter delivers data to said signal receiving device through a first primary channel; and detecting a received signal strength indicator of said first primary channel if the number of continuous failed packets is greater than a threshold value, thereby discriminating whether said first primary channel is being used, wherein if said first primary channel is not being used, said wireless transmitter delivers data to said signal receiving device through said first primary channel for the second time and the number of continuous failed packets is counted, and then said wireless transmitter delivers a channel switching notification to said signal receiving device by polling at least one sub channel provided that said first primary channel is not being used, and delivers data to said signal receiving device through a second primary channel until said signal receiving device successfully receives said channel switching notification, and wherein if said first primary channel is being used, a received signal strength indicator of a second primary channel is detected to discriminate whether said second primary channel is being used, and if said second primary channel is not being used, said wireless transmitter delivers a channel switching notification to said signal receiving device by polling at least one sub channel, and said wireless transmitter delivers data to said signal receiving device through said second primary channel if said signal receiving device has successfully received said channel switching notification, and said wireless transmitter delivers said channel switching notification to said signal receiving device by successively polling four sub channels.