基于水声传感网络的树形拓扑混合MAC协议  

A hybrid MAC protocol in the tree topology based on the underwater acoustic sensor networks

作　　者：类延增 刘广钟[1] 徐明[1] 

机构地区：[1]上海海事大学信息工程学院,上海201306

出　　处：《微型机与应用》2015年第15期71-74,共4页Microcomputer & Its Applications

基　　金：上海市教委创新项目资助(12ZZ151)

摘　　要：鉴于水下传感网络的长时延、低带宽的特点,设计有效的水下无线网络的通信传输协议很有必要。提出一种树形拓扑结构的结合基于竞争和基于分配两种模式的混合策略,减少了水声通信中的握手次数,即减少了RTS/CTS请求的发送次数,利用组播、LRU预留时间策略提高了传输效率,整合了网络通信中ACK包和数据包的发送,既能使所有节点间实现自由通信,又能提高网络吞吐量、节约能耗。According to the features of long delay and low-bandwidth in the underwater sensor networks, designing an effective underwater wireless communication network transporting protocol is necessary. This paper presents a combined protocol in a tree topology, which mixes competition modes and allocation strategy. The strategy reduces underwater acoustic communication handshakes and the numbers of transmissions of RTS/CTS requests by multicast and LRU reservation. That greatly improves transmission efficiency. By integrating the data packet and the ACK packet, the protocol not only achieves freedom communication between all nodes but also improves network throughput and energy-saving effect.

关 键 词：水声传感网络 组播 加密 延长阶段 保留时间 

分 类 号：TN929.3[电子电信—通信与信息系统]