Patent ID: 7397785

Claim:
A method for enhancing fairness and performance in a multihop ad hoc network, the method comprising: providing contention synchronization information regarding a transmission between a first set of nodes of the network, wherein the information is provided to a second set of nodes in a range of two hops from the first set of nodes participating at the transmission; and setting, after successfully finishing the transmission, a waiting time for the first set of nodes, in which the first set of nodes backoff from accessing a transmission medium, wherein, the providing of the contention synchronization information provides the contention synchronization information by generating a first black burst energy signal by each node in a third set of nodes of the network receiving a transmission request or a transmission clearance, the first black burst energy signal indicating a busy time of the transmission medium according to a mapping scheme, wherein in the providing of the contention synchronization information, the method accords to a distributed coordination function, and wherein in the providing of the contention synchronization information, the transmission request comprises a request-to-send packet, the transmission clearance comprises a first clear-to-send packet, and the waiting time comprises a time for a request-to-send/clear-to-send-handshaking and a total backoff time of a minimum contention window.