感知無線電網路之分散式頻譜調整策略

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：29

、訪客IP：18.117.75.53

姓名

黃柏璁(Bo-tsuang Huang) 查詢紙本館藏

畢業系所

資訊工程學系

論文名稱

感知無線電網路之分散式頻譜調整策略
(Distributed Spectrum Adjustment Policy for Cognitive Radio Network)

相關論文

★ 應用MSPP至DWDM都會光纖網路的設計	★ 光網路與WiMAX整合架構研究及其簡化雛型實驗
★ 以Linux系統為基礎之NAT效能優化研究及其實作	★ 光波長劃分多工網路之路徑保護機制研究
★ 標籤交換網路下具有服務品質路由安排之研究	★ 以訊務相關性為基礎的整合性服務可調整QoS排程器之研究
★ 標籤交換網路架構下Mobile IP之效能研究	★ AAA伺服器建置及其在移動式網路上之效能研究
★ 在DWDM網路中的保證保護路徑切換時間機制之探討	★ 以群體播送支援IPv6環境下移動式網路連結更新之研究
★ 無線區域網路資源動態分配之效能研究	★ 在微觀移動環境下有效資源保留之路徑管理研究
★ 無線網路交握程序之預先認證方法分析與比較	★ 無線區域網路虛擬允入控制之研究
★ IPv6環境下移動網路之連結更新程序及其效能之研究	★ 具有限數量波長轉換節點的分波多工網路之群播波長分配與容量計算研究

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

感知無線電網路(Cognitive radio network)提供了解決頻譜使用率不佳的環境，它讓那些未持照使用者(unlicensed user)也可以在不影響持照使用者(licensed user)的方式下共同使用頻譜。
在此環境下也存在一般網路環境會碰到的因素，整個網路傳輸品質會隨著地理位置或是空間不同而改變，再加上空閒頻譜會隨著持照使用者未使用才會出現，因此整個網路環境是變動的。該如何有效的在這動態的環境中利用這閒置的頻譜成為一個重要的議題，在目前許多方法會假設在網路中會有一個資訊整合中心(Fusion center)，它除了可以整合環境的資訊之外也可以採用統一決策的方式來有效率分配這空閒的頻譜給未持照使用者，也可以隨著動態的環境做調整，但如果網路中不存在這樣的腳色來分配頻譜，未持執照的使用者將變成各自決策使用的通道，頻譜容易陷入競爭而沒有妥善利用，造成使用率仍不佳。
本論文在考慮動態的通道狀況與分散式的通道決策方式下，提出一個通道決策方法讓這些未持執照的使用者能彼此協調通道的使用，進而提升頻譜使用率，在模擬的結果中顯示提出的方法能夠提升頻譜的使用率來增加系統的效能並且系統中未持照的使用者能之間能夠在換手造成的 overhead 方面維持一定的公平性，然而在動態調整參數下能夠以不降低系統效能的狀況下降低多餘的換手次數來降低 overhead。

摘要(英)

Cognitive Radio network provides an environment which is able to solve the problem of the inefficient utilization of the spectrum. It helps the unlicensed users to make use of the spectrum together, under the condition of having no influence to licensed users.
In Cognitive Radio network, the transmission quality will change due to the different location or space in the whole network, which is similar to the general network environment. Moreover, the idle spectrum would appear only in the case that the licensed user does not make use of it, which burdens the changeable network environment. Thus, how to make efficient use of the idle spectrum becomes an important issue in the dynamic environment. In many methods presently, it is assumed that there is Fusion center in the network, which is able to integrate the environment information, allocate idle spectrum to unlicensed users efficiently in the centralized decision-making method, and adjust it according to the dynamic environment. However, if there is no Fusion center to allocation the spectrum, then unlicensed users make their own decisions of the usage of channels independently. Under such condition, the spectrum utilization would be inefficient because of the contention.
In this paper, a channel decision-making method considering the dynamic channel condition and the distributed channel decision-making is proposed, which is able to make the unlicensed users coordinate the channel utilization and improve the spectrum efficiency. In the simulation, the result shows that the proposed method can improve the system performance by improving the spectrum utilization, and maintain certain fairness in the aspect of overhead resulting from the handover between unlicensed users. However, under the dynamic adjustment of parameters, the overhead would be decreased due to the fewer numbers of unnecessary handover while keeping the system performance.

關鍵字(中)

★ 通道決策
★ 感知無線電
★ 分散式頻譜決策

關鍵字(英)

★ channel selection
★ cognitive radio
★ distributed spectrum decision

論文目次

摘要 .......................................................................................................................................I
Abstract................................................................................................................................ II
誌謝 .................................................................................................................................... III
目錄 ....................................................................................................................................IV
圖目錄 ................................................................................................................................. V
表目錄 ................................................................................................................................VI
第一章緒論 .............................................................................................................. - 1 -
1-1 研究背景 .............................................................................................................. - 1 -
1-2 研究動機 ...............................................................................................................- 2 -
1-3 章節概要 ...............................................................................................................- 3 -
第二章相關研究背景.............................................................................................. - 4 -
2-1 感知無線電網路環境架構.................................................................................. - 4 -
2-2 相關文獻探討.......................................................................................................- 6 -
第三章研究方法 ...................................................................................................... - 9 -
3-1 系統架構 ...............................................................................................................- 9 -
3-2 通道決策方法.....................................................................................................- 11 -
3-3 動態調整參數.....................................................................................................- 17 -
3-4 通道決策方法範例............................................................................................ - 20 -
第四章模擬結果與討論........................................................................................ - 24 -
4-1 模擬環境 .............................................................................................................- 24 -
4-2 不同的通道決策方法.........................................................................................- 25 -
4-3 SA方法中不同的調整方法................................................................................- 32 -
4-4 SA方法動態調整參數機制................................................................................- 38 -
4-5 SA方法中不同的選擇通道方法........................................................................- 46 -
第五章結論與未來工作........................................................................................ - 49 -

參考文獻

[1] I. F. Akyildiz, W. Y. Lee, M. C. Vuran, and S. Mohanty, “Next Generation/ dynamic spectrum access/ cognitive radio wireless networks: a survey,” Computer Networks: The International Journal of Computer and Telecommunications Networking, vol. 50, issue 13, pp. 2127-2159, 2006.
[2] L. Ying-Chang, G. Y. Liang, and Z. Yonghong, “Cooperative Spectrum Sensing in Cognitive Radio Networks with Weighted Decision Fusion Schemes,” IEEE Transactions on Wireless Communications, vol. 9, pp.3838-3847, Dec. 2010.
[3] T. Zhang, X. Yu, “Spectrum Sharing in Cognitive Radio Using Game Theory--A Survey,” 2010 6th International Conference on Wireless Communications Networking and Mobile Computing, pp.1-4, Sept. 2010.
[4] L. Ying-Chang, G. Y. Liang, and Z. Yonghong, “Power Control in Cognitive Radios under Cooperative and Non-Cooperative Spectrum Sensing,” IEEE Transactions on Wireless Communications, vol. 10, pp.4238-4248, Dec. 2011.
[5] S. Zhang, T. Wu, and V. K. N. Lau, “A low-overhead energy detection based cooperative sensing protocol for cognitive radio systems,” IEEE Transactions on Wireless Communications, vol. 8, pp.5575-5581, Nov. 2009.
[6] FCC, “Et Docket no 03-237 Notice of Inquiry and Notice of Proposed Rulemaking,” FCC, Tech. Rep. 03-237, Nov. 2003.
[7] W. Y. Lee, and I. F. Akyildiz, “A Spectrum Decision Framework for Cognitive Radio Networks,” IEEE Transactions on Mobile Computing, vol. 10, no. 2, pp.161-174, Feb. 2011.
[8] Y. Yao, S. R. Ngoga, D. Erman, and A. Popescu, “Competition-Based Channel Selection for Cognitive Radio Networks,” Proc. of IEEE Wireless Communications and Networking Conference (WCNC), pp. 1432-1437, Apr. 2012.
[9] L.C. Wang, C.-W. Wang, and F. Adachi, “Load-Balancing Spectrum Decision for Cognitive Radio Networks,” IEEE Journal on Selected Areas in Communications, vol. 29, no. 4, pp. 757-769, Apr. 2011.
[10] L. C. Wang, and C. W. Wang, “Spectrum Handoff for Cognitive Radio Networks: Reactive-Sensing or Proactive-Sensins?,” Proc. of IEEE International Performance, Computing and Communications Conference (IPCCC), pp. 343-348, Dec. 2008.
[11] Y. Song and J. Xie, “ProSpect: A Proactive Spectrum Handoff Framework for Cognitive Radio Ad Hoc Networks without Common Control Channel,” IEEE Transactions on Mobile Computing, vol. 11, pp.1127-1139, Jul. 2012.
[12] Y. Chen, Y. Wu, B. Wang and K. J. Ray Liu, “Spectrum Auction Games For Multimedia Streaming Over Cognitive Radio Networks,” IEEE Transactions on Communications, vol. 58, pp.2381-2390, Aug. 2010.
[13] B. Wang, Y. Wu, and K. J. Ray Liu, “Game Theory for Cognitive Radio Networks: An Overview,” Computer Networks (Elsevier), vol. 54, no. 14, pp. 2537-2561, 2010.
[14] W. C. Tui, and M. van der Schaar, “Queuing-based dynamic channel selection for heterogeneous multimedia applications over cognitive radio networks,” IEEE Transactions on Multimedia, vol. 10, pp. 896-909, Aug. 2008.
[15] C. Chou, S. Shankar, H. Kim, and K. G. Shin, “What and How Much to Gain by Spectrum Agility?,” IEEE Journal on Selected Areas in Communications, vol. 25, no. 3, pp. 576-588, Apr. 2007.
[16] K. R. Chowdhury and I. F. Akyildiz, “OFDM-Based Common Control Channel Design for Cognitive Radio Ad Hoc Networks,” IEEE Transactions on Mobile Computing, vol. 10, no. 2, pp. 228-238, Feb. 2011.
[17] ECMA Std. 392, “MAC and PHY for Operation in TV White Space,” Dec. 2009.

指導教授

陳彥文(Yen-wen Chen)

審核日期

2012-7-26

推文