Patent ID: 8665790

Claim:
A wireless node in a radio system configured to exchange information with other wireless nodes in the radio system, the wireless node comprising: a sensing and detection circuit configured to detect use of a first radio resource by a primary user of that first radio resource; a transmit and receive circuit; and a message construction circuit configured to construct a first message and to transmit that first message, via the transmit and receive circuit, to at least one other wireless node in the radio system, the first message directing the at least one other wireless node to, for a particular amount of time, block access to the detected first radio resource by one or more secondary users of that first radio resource, a message extractor configured to identify a second message received via the transmit and receive circuit as directing the wireless node to block access to a second radio resource by one or more secondary users of that second radio resource; a message forwarding circuit configured to forward the second message to one or more other wireless nodes, the second message thereby being transmitted over multiple hops.