利用节点位置信息转发数据包的地理路由广泛应用于水下传感网络.为此,提出新的贪婪转发地理路由.CRT-GF路由引用基于中国剩余定理的分组机制.在CRT-GF路由中,如果存在两个或2个以上的数据包转发节点,就利用CRT将源消息划分为分组,从而降低源节点转发消息的尺寸.同时,CRT-GF路由通过深度调整实现拓扑控制,进而处理地理路由中出现的孤立节点问题.实验数据表明,提出的CRT-GF路由可有效地提高数据包传递率,并降低端到端传输时延以及能耗.%Geographic routing that uses the position information of nodes to route the packet toward a destination is preferable for Underwater Wireless Sensor Networks (UWSNs).A CRT-GF Routing algorithm was proposed in this paper .CRT-GF Routing quoted the grouping mechanism based on Chinese Remainder Theorem .In the approach , source node reduced the number of bits transmitted using the proposed splitting mechanism based on CRT if there are more than two nodes participate in the forwarding of one packet .Topology control was realized through depth adjustment to cope with the problem of isolated and void nodes problem appeared in geographic routing protocols was solved .Simulation results show that proposed CRT-GF routing can effectively im-prove the packet transmission rate , thus reducing end-to-end delay and energy consumption .
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