Geographical routing protocol method applied to underwater acoustic sensor network

Abstract

The invention provides a geographical routing protocol method applied to an underwater acoustic sensor network, which comprises the following steps that each node acquires neighbor node information and calculates an average expected forwarding frequency for dividing a routing forwarding area; and each relay node divides an area in a communication range into a low packet loss rate area, a high packet loss rate area and a non-forwarding area according to the node degree and the packet loss rate, wherein the node in the low packet loss rate area uses an opportunistic routing forwarding strategy,and the node in the high packet loss rate area uses a flooding forwarding strategy, the node in the non-forwarding area does not participate in forwarding the data packet. According to the method, theadvantages of an opportunistic routing forwarding strategy and a directional flooding forwarding strategy are integrated, and compared with other underwater acoustic sensor network routing protocols,the energy consumption can be obviously reduced, and the packet loss rate and the end-to-end delay are reduced.

Description

technical field [0001] The present invention relates to the field of underwater acoustic sensor networks, in particular to a geographical routing protocol method applied to underwater acoustic sensor networks. Background technique [0002] Underwater acoustic sensor networks are a promising technology that will facilitate a wide range of aquatic applications, but due to the harsh underwater environment, they face enormous challenges and problems, such as limited bandwidth, node mobility, long propagation delay, three-dimensional deployment, Energy constraints, expensive manufacturing and deployment costs; these all limit the performance of UASN routing protocols. Therefore, how to design an efficient underwater acoustic routing protocol becomes the key. [0003] The geographic routing protocol is a kind of underwater acoustic sensor network. The key to the geographic information routing protocol is how to select the next-hop neighbor node according to the geographic informat...

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Problems solved by technology

[0002] Underwater acoustic sensor networks are a promising technology that will facilitate a wide range of aquatic applications, but due to the harsh underwater environment, they face enormous challenges and problems, such as limited bandwidth, node mobility, long propagation delay, three-dimensional deployment, Energy constraints, expensive manufacturing and deployment costs; these all limit the performance of UASN routing protocols, so how to design an efficient underwater acoustic routing protocol becomes the key

[0003] The geographic routing protocol is a kind of underwater acoustic sensor network. The key to the geographic information routing protocol is how to select the next-hop neighbor node according to the geographic information of the node, and how to detour when there is a routing hole; in a complex underwater environment, Nodes have certain mobility and are more prone to routing holes; how to make routing protocols more flexible in underwater environments becomes a challenge

[0004] The forwarding strategy adopted by the existing geographical routing protocols includes opportunistic routing forwarding strategy and direction flooding forwarding strategy, and the opportunistic routing forwarding strategy only allows a small number of nodes to participate in forwarding, and each node needs to extend a period of time to participate in forwarding data packets, so there is Due to the disadvantages of high end-to-end delay and large amount of calculation; the directional flood forwarding strategy is a restrictive flood forwarding strategy, but it cannot completely overcome the shortcomings of the flooding forwarding strategy, such as high energy consumption and short network lifetime; therefore , it is imperative to design a routing protocol that can suppress the respective shortcomings of the opportunistic routing forwarding strategy and the direction flooding forwarding strategy for complex underwater environments

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