Multi-hop wireless network congestion control method based on RTS/CTS mechanism

• Main Authors: WEI GANG, JIANG SHENGMING, HU HAIYAN, LIU GUIKAI, ZUO QIN
• Format: Patent
• Language: Chinese; English
• Published: 14.01.2009
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

The present invention discloses a multi-hop wireless network congestion control method based on RTS/CTS mechanism. The method includes: when a sending node transmits RTS to a receiving node, if the receiving node does not have enough buffer space to receive the data requested to transmit by the receiving node, the receiving nodes returns a fCTS back to a RTS sender; the RTS sender, after receiving the fCTS, transmits the data packet under the conditions specified by the fCTS contents. If a node has sends out a RTS just after sending out the fCTS or nCTS, the node must return back CTS to the RTS sender if there are no hidden terminals around the receiving node of the RTS, and the nCTS is used to inform the RTS sender not to carry out data transmission. The invention can more accurately grasp the situation of network congestion in a very small price, reduces and avoids the misjudgment of the situation of network congestion, and can effectively control the occurrence of congestion, thereby greatly improving the