Media access control protocol for underwater sensor network based on TDMA

• Main Authors: YANG XIAOHUI, HONG LU, HONG FENG, JIANG YONGGUO, QU HAIPENG, FENG YUAN, ZHANG YANHUA, GUO ZHONGWEN
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2011
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

The invention relates to an underwater sensor network media access control protocol based on a TDMA and applied in an underwater sensor network with high bit error rate, high time delay and low bandwidth. The invention is an improved underwater sensor network media access control protocol based on the TDMA on the basis of the traditional TDMA. The concrete method comprises that: different optimalprotection time is set according to different propagation delay in concrete network environments in which each node is positioned, so as to avoid conflicts brought by the change of time delay; delay time is utilized to distribute propagation time for each node, so as to solve problem of conflict-free propagation of the nodes of an underwater sensor; the delay time is encapsulated into super frames, so as to notify each node about data packet transmission time; finally, lightweight synchronous communication is realized. The underwater sensor network media access control protocol lowers the requirement for accurate sync