US Patent No. 9,420,592

METHOD AND APPARATUS OF INTERFERENCE AVOIDANCE BASED ON MULTI TRANSMISSION AND RECEPTION


Patent No. 9,420,592
Issue Date August 16, 2016
Title Method And Apparatus Of Interference Avoidance Based On Multi Transmission And Reception
Inventorship Byeong Cheol Choi, Daejeon (KR)
Jae Hong Ruy, Sejong (KR)
Assignee ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)

Claim of US Patent No. 9,420,592

1. A method of avoiding channel interference by a sensor node including a multi transmission and reception unit in a wireless
sensor network, the method comprising:
setting a channel A in a channel group A for a first wireless transmission and reception unit, and setting a channel B in
a channel group B for a second wireless transmission and reception unit;

checking interference for the channel A;
checking interference for the channel B if interference is detected in the channel A;
performing communication through a channel, where interference has not been detected, among the channel A and the channel
B;

hopping the channel A by a channel hopping coefficient j and hopping the channel B by a channel hopping coefficient k when
interference is detected in both the channel A and the channel;

checking interference on the hopped channel A;
detecting interference on the hopped channel B if interference is detected in the hopped channel A; and
performing communication through a channel, where interference is not detected, among the hopped channel A and the hopped
channel B.