在無線多頻道隨意網路下考量電量控制情況設計一分散式具區域感知之頻道分配媒體存取控制協定以提昇網路效能

SMART: A Distributed Spatial-aware Multi-channel Assignment with Radio Transmission Power Control MAC Protocol for Multi-channel Wireless Ad Hoc Networks

許博捷(Po-Chieh Hsu)

指導教授 ： 林其誼

淡江大學/工學院/資訊工程學系碩士班/碩士(2010年)

https://doi.org/10.6846/TKU.2010.00742

摘要

在網路普及使用的情況下，出現無線頻寬不足的問題。節點傳輸速率降低的同時，也反應出在有限的頻寬上，網路產生壅塞的情形。因此如何有效使用頻寬已經成為許多學者研究的目標。在多種可增進網路效能的技術中，其中的兩種方式分別是使用多重頻道(Multi-Channel)和進行電量控制(Power Control)。本篇論文希望藉由合併此兩種技術，利用空間的切割(多重頻道)和同一空間內並行傳輸(電量控制)，以減少壅塞的情況並增進網路效能。在頻道挑選方面，傳輸對可能面臨，當進行電量控制後，有多個頻道可以使用時，考量傳輸對間相對位置的干擾情況，作為頻道挑選的依據。在論文的最後，透過實驗模擬的結果得知，當此兩種技術合併使用時且透過論文內的頻道挑選機制，可以大大提升網路效能。

關鍵字

IEEE 802.11 ； 隨意無線網路 ； 電量控制 ； 頻道配置 ； 多重頻道

並列摘要

The bandwidth resource is a precious resource in wireless ad hoc networks. Many researches have been proposed to increase the utilization of bandwidth by using multi-channel mechanism or power control mechanism. In order to enhance the bandwidth utilization, power control and multi-channel mechanisms are both used in this paper. However, the different power should be used to transmit data on different channels due to the different network environments on each channel. In such a case, how to select a suitable channel to mitigate interference is an important issue. Therefore, this paper proposes a MAC protocol, named SMART MAC protocol, which selects a suitable channel for data transmission. The simulation results show that the proposed protocol can provide better network throughput.

並列關鍵字

IEEE 802.11 ； Ad Hoc Networks ； Power Control ； Channel Assignment ； Multi-Channel MAC Protocols

參考文獻

[1] S.-L. Wu, C.-Y. Lin, Y.-C. Tseng, and J.-P. Sheu, “A New Multi-Channel MAC Protocol with On-Demand Channel Assignment for Mobile Ad Hoc Networks.” in Proceedings of Int’I Symposium on Parallel Architectures. Algorithms and Networks, pp. 232-237, 2000.

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[5] S.-L. Wu, Y.-C. Tseng, C.-Y. Lin, Lin, J.-P. Sheu, “A Multichannel MAC Protocol with Power Control for Multi-Hop Mobile Ad Hoc Networks,” Computer Journal, vol. 45, no. 1, pp. 101-110, 2002.

[6] K. Xu, M. Gerla, and S. Bae, “How Effective Are the IEEE 802.11 RTS/CTS Handshake in Ad Hoc Networks,” IEEE Global Telecommunications Conference (GLOBECOM), 2002.

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