IEEE 802.16j多跳中繼網路基地台與中繼站佈建之研究

IEEE802.16j多跳中繼網路系統(Multi-hop relay network systems)提供了一個新型態的無線行動通訊網路架構，藉由架設中繼站(Relay station ; RS)提高無線網路的通訊覆蓋範圍及資料傳輸率(Transmission rate)，並可取代傳統基地台(Base station; BS)佈建所需要的高價位成本，為了讓使用者獲得良好的傳輸率，適當的基地台與中繼站的佈建位置是一個重要的因素。因此，要如何佈建基地台與中繼站，藉以提高整體網路的性能是本篇論文所要研究的目標。基於傳輸率與佈建預算的考量，本篇論文提出有效率的基地台與中繼站的佈建方法，根據基地台與中繼站的候選地點所能覆蓋到的使用者數量、傳輸速率及使用者的流量需求(Traffic demand)進行佈建分析，在本論文中提出均勻分群佈建及多因素佈建演算法，從候選地點中選擇適當的位置進行基地台與中繼站的佈建，目的是在資料傳輸速率與佈建預算中取得平衡，在有限的佈建預算中讓使用者都儘可能的被基地台與中繼站覆蓋。根據模擬實驗結果顯示，本論文所提出的方法能夠在有限的佈建預算中獲得較高的覆蓋率及較佳的資料傳輸速率。

關鍵字

IEEE 802.16j ；基地台；中繼站；佈建；資料傳輸

並列摘要

IEEE 802.16j multi-hop relay network systems provide new infrastructure of wireless mobile communication networks. It improves the coverage area and data transmission rate by deploying the relay stations (RSs). Also, the expensive cost for deploying the base stations (BSs) can be replaced. Suitable placement for BSs and RSs is one of the most important features for the users to obtain a high data transmission rate in such environment. The main objective of this paper is to improve the network performance by deploying the BSs and RSs. Based on the consideration of the network throughput and the budget, the efficient BS and RS deployment approaches are proposed in this paper to select the suitable placement locations for the BSs and RSs from the candidate positions by taking into account the number of coverage user, data transmission rate, and traffic demands. In this paper, the uniform clustering algorithm and multi-factors algorithm are proposed to select the suitable positions for deploying the BSs and RSs from the candidate positions. The main goal is to make a trade-off between the network throughput and the budget. Under the budget constraint, the locations of BSs and RSs are determined such that the network can cover as many users as possible. Simulation results show that the proposed algorithms can obtain the high coverage rate and better transmission rate under the budget constraint.

並列關鍵字

BS ； data transmission ； deployment ； IEEE 802.16j ； RS

參考文獻

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[6] Chih-Yung Chang, Chao-Tsun Chang, Ming-Hsien Li, Chun-Hung Chang, “A Novel Relay Placement Mechanism for Capacity Enhancement in IEEE 802.16j WiMAX Networks,” IEEE International Conference on Communications, pp. 1 – 5, June 2009.

[7] Li-Chun Wang, Wen-Shan Su, Jane-Hwa Huang, Chen, A., Chung-Ju Chang, “Optimal Relay Location in Multi-Hop Cellular Systems,” IEEE Wireless Communications and Networking Conference, pp. 1306-1310, 2008.

[9] Hsiao-Chen Lu, Wanjiun Liao, Lin, F.Y., “Relay Station Placement Strategy in IEEE 802.16j WiMAX Networks,”IEEE Transactions onCommunications, vol. 59, no. 1 pp. 151 – 158, Jan. 2011.

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IEEE 802.16j多跳中繼網路基地台與中繼站佈建之研究

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