碩士 / 國立臺灣師範大學 / 資訊工程研究所 / 99 / In the last few years there has been are intensive study in routing protocols for terrestrial wireless sensor networks. Terrestrial wireless sensor networks have been used extensively in many land-based applications. Underwater Sensor Networks (UWSNs) have attracted a lot of attention recently. Since data packets in Underwater Sensor Networks are transmitted by acoustic signals, the characteristics of a Underwater Sensor Networks are different from those of a terrestrial wireless sensor networks. However, due to the different nature of the underwater environment and applications, there are drawbacks with respect to the suitability of the existing solutions for underwater acoustic networks.
In this paper, we propose a N level binary tree protocol. Sinks are usually situated at the water surface. The based on the depth information of each sensor, N level binary tree forwards data packet towards the water surface. We make use of multipath data delivery. N level binary tree will limit the number of transmissions, it does not produce excessive transmission times and packet arrival rate is not too low.
Acoustic communications vulnerable to damage in the water result in packet loss, land used solution is to use automatic repeat request (ARQ) techniques. In our simulations, N level binary tree does not use ARQ, we will work with a single path and use the ARQ Greedy short sink method to compare. The results indicate that, without the need for high packet arrival rate, N level binary tree can have a lower number of transmissions, the N level binary tree can save electricity sensor, increasing the network lifetime.
| Identifer | oai:union.ndltd.org:TW/099NTNU5392036 |
| Date | January 2011 |
| Creators | 張宇鎮 |
| Contributors | 蔡榮宗 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 53 |
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