A low-latency underwater cross-layer opportunistic routing method

Abstract

The invention discloses a low-delay underwater cross-layer opportunistic routing method, which is characterized in that it includes: step 1, the convergence node in the underwater sensor network sends a first-level probe package and a second-level probe package to send a plurality of underwater The node is layered twice to form a neighbor table; step 2, the sending node selects a plurality of underwater nodes as the next hop of the sending node according to the neighbor table, and elects a forwarding node through a waiting mechanism; wherein, the neighbor The table is updated according to the network topology. The present invention reduces the control packet of the MAC layer by using the routing information, and the information of the MAC layer can reduce the consumption of maintaining the neighbor information between nodes and then reduce the control packet in the routing stage; the use of the control packet and the data of the control packet can be reduced through the method of neighbor information and opportunistic routing. Multi-copy situations, thereby reducing end-to-end delay and overall network energy consumption.

Description

technical field [0001] The present invention relates to the technical field of underwater wireless communication, and more specifically, the present invention relates to a low-delay underwater cross-layer opportunistic routing method. Background technique [0002] Routing technology is the key technology of the third network layer in the OSI model of computer networks. Underwater routing is an important technical support for underwater wireless sensor networks (UWSN), and has always been a research hotspot in computer science. [0003] In the underwater environment, due to the difficulty of long-distance transmission of optical signals, underwater acoustic communication is usually used. However, the propagation speed of underwater acoustic communication is slow, the bandwidth is low, and it is easy to be interfered. It is difficult to quickly and remotely transmit some urgent data collected underwater to the surface of the water without loss. Therefore, how to use the under...

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Problems solved by technology

[0008] In addition, the impact of the MAC layer on the end-to-end delay is rarely considered in the existing underwater routing technology

In the process of end-to-end data transmission, because the underwater MAC layer technology needs to exchange control packets before each data transmission in order to reduce conflicts, it will also increase the end-to-end delay.

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