Patent ID: 9379901
Filing Date: 2016-06-28
CPC Classification: H04L

Claim Text:
1. A communication method executed by a head node, the method comprising: receiving, from each of a plurality of nodes, a channel report frame including channel information provided by a neighbor head node; selecting one of the plurality of nodes to be a communication partner based on the received channel information; transmitting a data frame to the selected node; transmitting, to the selected node, an ACK request frame which requests an ACK indicating whether the data frame is received; and receiving, from the selected node using a multi-radio based on an availability of low data-rate radio (LDR), an acknowledgement (ACK) of having received the transmitted data frame, wherein when the selected node is able to use the LDR, the receiving the ACK comprises receiving the ACK using the LDR, and when the selected node is not able to use the LDR, the receiving the ACK comprises receiving the ACK using high data-rate radio (HDR).