應用ANFIS法則於多媒體異質網路動態頻道與資料率指派研究

Application of ANFIS rule to dynamic channel assignment and rate control for multimedia heterogeneous networks

黎仲浩(Chung-Haw Li)

指導教授 ： 馬杰

元智大學/電機通訊學院/通訊工程學系/碩士(2009年)

https://doi.org/10.6838/YZU.2009.00269

摘要

隨著無線網路服務的需求的增加，整合式無線網路將是未來無線網路的趨勢，因此在整合式網路中，要如何管理通道配置及控制用戶的傳輸資料率以提升整合系統的整體效能就變得非常重要了。基於此目的，本論文在整合式的Mobile WiMAX與DSRC異質性階層式細胞聯網環境下，提出動態頻道配置與多媒體資料率選擇器，希望整合式網路利用動態頻道配置與多媒體資料率選擇器解決服務要求驟增而導致服務品質(Quality of Service, QoS)很差的狀況。動態頻道配置的目的為適當的配置兩系統的頻道交互使用，以應付其中一個系統的頻道不足的情況。因此本論文使用模糊控制多重頻道保留法(FCB-MTCR)，將兩個系統的頻道交互使用，使得在服務要求驟增時可以符合QoS的要求。使用多媒體資料率選擇器的目的為當服務要求驟增時，系統能夠自動的判斷要配置多少資料率給使用者同時又能維持QoS的要求，本論文應用可適性類神經模糊推論系統(ANFIS)於資料率控制器上，針對不同多媒體服務要求的用戶，考量新通話產生率、用戶速度、新通話阻礙率及交遞失敗機率等性能參數，調整用戶的資料率傳輸大小，使得系統能夠自動的調整用戶資料率並達到整體阻礙率在0.05以下的要求。
在模擬結果中，本文對於頻道共享(CS)、FCB-MTCR及ANFIS資料選擇器結合FCB-MTCR這三種頻道管理系統方式在整合式Mobile WiMAX與DSRC異質性階層式細胞聯網環境下來做系統性能比較。模擬結果顯示ANFIS資料選擇器結合模糊控制多重頻道保留優於另兩種機制並能夠自動判斷用戶數及其速度的不同，適當的調整頻道與資料率以符合系統服務品質的要求。

關鍵字

通道配置

並列摘要

This paper combines an adaptive neural fuzzy inference system (ANFIS) fuzzy data rate controller with the fuzzy control-based multiple threshold slot reservation (FCB_MTCR) channel assignment scheme for an integrated Mobile WiMAX and DSRC multimedia networks to provide an appropriate data rate of multimedia services. The ANFIS data rate controller chooses the new call blocking probability, handoff failure probability, new call origination rate and the user speed as the input linguistic variables to control the data rate of multimedia call services. We examine the traffic performance of the resource allocation methods based on the complete sharing (CS) scheme, FCB_MTCR scheme and the proposed ANFIS data rate controller combined with FCB_MTCR scheme in the integrated Mobile WiMAX and DSRC multimedia networks.

Simulation results show that the ANFIS data rate controller combined with FCB_MTCR scheme are able to guarantee the new call blocking probability and handoff probability lower than 0.05 in the integrated Mobile WiMAX and DSRC multimedia networks.

並列關鍵字

channel assignment

參考文獻

[1] Qingyang Song, Abbas Jamalipour, “Network selection in an integrated wireless LAN and UMTS environment using mathematical modeling and computing techniques”, IEEE　Wireless Communications, vol. 12, pp. 42-48, June. 2005.

[3] Brocha Epstein and Mischa Schwartz, “Reservation Strategies for Multi-Media Traffic in a Wireless Environment”, IEEE Vehicular Techonology Conference, vol. 1, pp. 165-169, Jul. 1995

[4] D.Hong anf S.S. Rappaport, “Traffic model and performance analysis for cellular mobile radio telephone systems with prioritized and non-prioritized handoff procedures”, IEEE Transactions on Vehicular Techonology, vol. VT-35, no. 3, pp. 77-92, Aug. 1986.

[5] Roch Guerin, “Queueing-blocking system with two arrival systems and guard channels”, IEEE Transactions on Communication, vol. 36, NO. 2. FEB.1988.

[6] Chung-Ju Chang, Senior Member, IEEE, Tian-Tsair Su, and Yueh-Yiing Chiang, “Analysis of a cutoff priority cellular radio system with finite queueing and reneging/dropping”, IEEE/ACM Transactions on Networking, vol. 2, NO. 2, APRIL 1994.