Patent attributes
A method, apparatus and computer program product for providing adjacent channel interference avoidance is presented. A first set of channels and a second set of channels of a Radio Frequency (RF) spectrum used by the wireless network are defined, the first set having a plurality of channels and the second set having a plurality of channels, and wherein the first set and the second set have mutually non-adjacent channels. A channel in the first set is designated as the control channel, the control channel being non-adjacent to channels in the second set, and used by all nodes of the wireless network. The channels in the first spectrum are utilized for the control channel and for data channels for unicast transmissions between single-radio nodes. The channels of the second set are utilized as data channels for unicast and multicast transmissions by multi-radio nodes. Adjacent channel interference between data transmissions on multiple radios located in the same device is avoided by allowing adjacent-channel transmissions only when they go in the same direction (either both incoming or outgoing) and by sending acknowledgments on the control channel.
