隨著無線網路科技的發展，中繼站的使用已經被證明對於在無線網路中的傳送以及涵蓋範圍有很顯著的幫助，而現行的中繼站使用主要是使用重傳的機制已確保傳送到使用者的訊號的正確性。本篇論文提出有別於傳統中繼站的新代傳機制，我們考慮利用基地台到中繼站的頻寬來代傳一部分使用者所需要的資料，希望在無線網路中能夠提升傳輸效能。為了有效率的使用頻譜資源，我們考慮基地台針對多個使用者不同的資料需求傳送時，針對每個使用者節點所需的傳送時間，然後分配基地台到中繼站之間的頻寬資源，給需要花費較多時間的使用者節點作為代傳資料使用，並藉由這樣的代傳機制讓傳送者所需時間彼此更為接近以改善整體使用者節點傳送的時間。而模擬結果顯示我們所提出的方法，比起只考慮個別使用者當前需求但不加以分配頻寬的方法可以較為有效的利用中繼站的頻寬資源並降低整體使用者傳輸進行的時間。

[1] A. Scaglione and Y.-W. Hong, “Opportunistic Large Arrays: Cooperative Transmission in Wireless Multi-hop Ad Hoc Networks to Reach Far Distances,” IEEE Transactions on Signal Processing, vol. 51, no. 8, pp. 2082-2092, August 2003.
[2] Y. Lin and Y. Hsu, “Multi-hop Cellular: a New Architecture for Wireless Communications,” in Proceedings of IEEE International Conference on Computer and Communications (INFOCOM), vol. 3, pp. 1273-1282, Tel Aviv, Israel, March 2000.
[3] 3GPP TR 36.814 V1.2.1, “Further Advancements for EUTRA: Physical Layer Aspects,” Technical Specification Group Radio Access Network Release 9, June 2009.
[4] IEEE P802.16j/D9, “Draft Amendment to IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems: Multihop Relay Specification,” February 2009.
[5] Y. Yang, H.-L. Hu, J. Xu, and G.-Q. Mao, “Relay Technologies for WiMAX and LTE-Advanced Mobile Systems,” IEEE Communications Magazine, vol. 47, pp. 100-105, October 2009.
[6] Y. Zou, Y.-D. Yao, and B. Zheng, “Cooperative Relay Techniques for Cognitive Radio Systems: Spectrum Sensing and Secondary User Transmissions,” IEEE Communications Magazine, vol. 50, pp. 98-103, April 2012.
[7] P. Djukic and S. Valaee, “Link Scheduling for Minimum Delay in Spatial Re-Use TDMA,” IEEE International Conference on Computer Communications (INFOCOM), pp.28-36, May 2007.
[8] P. Djukic and S. Valaee, “Delay Aware Link Scheduling for Multi-Hop TDMA Wireless Networks,” IEEE/ACM Transactions on Networking, vol.17, no.3, pp.870-883, Jun. 2009.
[9] X. Guo, W. Ma, Z. Guo, X. Shen and Z. Hou, “Adaptive Resource Reuse Scheduling for Multihop Relay Wireless Network Based on Multicoloring,” IEEE Communications Letters, vol.12, no.3, pp.176-178, March 2008.
[10] Y. Shi, W. Zhang and K. B. Letaief, “Cooperative Multiplexing and Scheduling in Wireless Relay Networks,” IEEE International Conference on Communications (ICC), pp.3034-3038, May 2008.
[11] W.-H. Kuo and J.-F. Lee, “Multicast Recipient Maximization in IEEE 802.16j WiMAX Relay Networks,” IEEE Transactions on Vehicular Technology, vol.59, no.1, pp.335-343, January 2010.
[12] W.-H. Kuo, “Recipient Maximization Routing Scheme for Multicast over IEEE 802.16j Relay Networks,” IEEE International Conference on Communications (ICC), pp.1-6, June 2009.
[13] I. Guvenc, U.C. Kozat, M.-R. Jeong, F. Watanabe and C.-C. Chong, “Reliable Multicast and Broadcast Services in Relay-Based Emergency Communications,” IEEE Wireless Communications, vol.15, no.3, pp.40-47, June 2008.
[14] S. W. Peters and R. W. Heath Jr., “The Future of WiMAX: Multihop Relaying with IEEE 802.16j,” IEEE Communications Magazine, vol. 47, no. 1, pp. 104–11, Jan. 2009.
[15] V. GENC, S. MURPHY, Y. YU, and J. MURPHY, “IEEE 802.16j Relay-Based Wireless Access Networks: An Overview,” IEEE Transactions on Wireless Communications, vol. 15, no. 5, pp. 56–63, October 2008.
[16] M. Werner, M. Naden, P. Moberg, P. Skillemark and W. Warzanskyj, “Cost assessment and optimization methods for multi-node radio access networks,” in Proceedings of the IEEE Vehicular Technology Conference (VTC), pp. 2601–2605, Nuremberg, Germany, May 2008.
[17] D. C. Schultz, and B. Walke, “Fixed Relays for Cost Efficient 4G Network Deployments: An Evaluation”, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 1-5, Athens, Greece, September 2007.
[18] B. Timus, “Cost analysis issues in a wireless multi-hop architecture with fixed relay nodes”, in Proceedings of the IEEE Vehicular Technology Conference (VTC), pp.3178-3182, Kista, Sweden, Spring 2005.
[19] Y. Wang, G. Feng, and Y. Zhang, “Cost-efficient Deployment of Relays for LTE-Advanced Cellular Networks,” in Proceedings of IEEE International Conference on Communications (ICC), pp. 1-5, Kyoto, Japan, June 2011.
[20] T. Girivi, “Joint Power, Subcarrier and Subframe Allocation in Multihop Relay Networks,” International Journal of Communication Systems, vol.22, pp. 835-855, July 2009.
[21] N. Krishnan, R. D. Yates, N. B. Mandayam, and J. S. Panchal, “Bandwidth Sharing for Relaying in Cellular Systems,” IEEE Transactions on Wireless Communications, vol.11, pp. 117-129, January 2012.
[22] J. Poston and W. Horne, “Discontiguous OFDM Considerations for Dynamic Spectrum Access in Idle TV Channels,” in Proceedings of IEEE Dynamic Spectrum Access Networks (DYSPAN), pp. 607-610, Baltimore, MD, USA, November 2005.
[23] J.-C. Jia, J. Zhang and Q. Zhang, “Cooperative Relay for Cognitive Radio Networks,” in Proceedings of IEEE International Conference on Computer and Communications (INFOCOM), pp. 2304-2312, Rio de Janeiro, Brazil, April 2009.
[24] G. Strang, “Linear Algebra and Its Applications, 4th Edition,” Thomson Brooks/Cole, Belmont, California, 2006.