一種新的均衡流量提高網(wǎng)絡(luò)能量效率的Ad hoc網(wǎng)絡(luò)路由建立算法
A New Route Setup Scheme for Ad hoc Networks to Improve Energy Efficiency
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摘要: 能量問題是Ad hoc網(wǎng)絡(luò)中的一個(gè)重要問題，該文提出了通過均衡流量提高網(wǎng)絡(luò)能量效率的TBDB路由建立算法。該算法在路由建立時(shí)對(duì)可選的路徑集合進(jìn)行限制，根據(jù)節(jié)點(diǎn)在飽和狀態(tài)時(shí)歸一化吞吐量的值，分別設(shè)定鏈路層隊(duì)列中數(shù)據(jù)長(zhǎng)度的門限值和節(jié)點(diǎn)連接度的門限值，收到路由請(qǐng)求的節(jié)點(diǎn)，根據(jù)門限值和節(jié)點(diǎn)的當(dāng)前狀況對(duì)節(jié)點(diǎn)是否響應(yīng)收到的路由請(qǐng)求做出判決，從而調(diào)節(jié)了網(wǎng)絡(luò)中節(jié)點(diǎn)的負(fù)荷，均衡了網(wǎng)絡(luò)中能量的消耗，避免節(jié)點(diǎn)長(zhǎng)期處于重負(fù)荷狀態(tài)，保證了當(dāng)前正在進(jìn)行的傳輸。分析和仿真表明該算法在均衡流量的同時(shí)，也將網(wǎng)絡(luò)中能量的消耗均衡地分散于網(wǎng)絡(luò)各個(gè)部分，改進(jìn)了網(wǎng)絡(luò)的性能。仿真結(jié)果表明該路由算法提高了網(wǎng)絡(luò)的吞吐率和能量效率，并且降低了平均端到端的延時(shí)。
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關(guān)鍵詞:
- Ad hoc網(wǎng)絡(luò);能量效率;路由;流
Abstract: Energy problem is very important in Ad hoc networks due to energy-constrained. In this paper, a traffic balanced route setup scheme, called TBDB, is presenred to improve energy efficiency. TBDB routing setup scheme decides whether to reply the route request by the connected flows of the node. Both of them have own threshold values and make routing decisions by the status of the node. The threshold values can be obtained by the normalized throughput values under saturated status. Analysis and simulation results show that both of them balance the energy consumption and the traffic of networks, improve the energy efficiency greatly, and decrease the average end to end delay. -
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