IEEE802.16無線大都會區域網路中高效率頻寬分配機制之設計與實作

Design and Implementation of High Performance Bandwidth Allocation Scheme for IEEE 802.16 Wireless Metropolitan Area Networks

許喬鈞(Chiao-Chun, Hsu)

指導教授 ： 許獻聰

淡江大學/工學院/電機工程學系碩士班/碩士(2006年)

https://doi.org/10.6846/TKU.2006.00667

摘要

IEEE 802.16是目前最受矚目的長距離無線網路協定之一，主要目的為在都會區提供容易架設且高效率及高頻寬的網路，為了在複雜的環境之中，提供客戶端一個高效率的服務，IEEE 802.16中制定了詳細的QoS架構，針對不同的需求而有等級及優先權的排列，但在協定之中並未十分仔細的對需求的分配有提出相對應的方法。
在這篇論文之中，我們詳細定義了各個服務的分配機制，使得每個客戶端的需求都能依照各個連線的狀況而被滿足，此QoS架構包括了最主要的頻寬分配，服務分類及頻寬需求申請的配置。
最後我們以我們所規劃的方法與目前現有機制的比較，結果中可以表現出在頻寬分配的效率方面，此架構不僅可以滿足QoS及公平性，並且有著較有效率的分配。

關鍵字

無線大都會區域網路 ； 服務架構 ； 頻寬分配

並列摘要

IEEE 802.16 is considered today as the most promising technology to build a simple, high performance and high bandwidth wireless network into metropolitan areas. For providing a high performance services in complicated environments, QoS (Quality of Service) architecture are designed in IEEE 802.16 for scheduling services for different requests. However, the corresponding mechanisms for scheduling are not described in detail in the standard.
In this paper, we designed an allocation mechanism for different services that could satisfy the requests of SS (Subscriber Station) by the connection conditions. In the allocation mechanism, the bandwidth allocation, services classification and bandwidth request schedule policy are considered.
In the simulation, we have a comparison of the WFQ (Weight Fair Queue) and our algorithm. By the result, it could be observed that our algorithm could not only satisfy the fairness and QoS, but also has better efficiency in scheduling.

並列關鍵字

WiMAX ； IEEE802.16 ； BS ； SS ； Scheduling ； QoS

參考文獻

[1] IEEE 802.16 Standard-Local and Metropolitan Area Networks-Part 16. IEEE 802.16-2004

[4] K. Wongthavarawat, and A. Ganz, “Packet Scheduling for QoS Support in IEEE 802.16 Broadband Wireless Access Systems”, International Journal of Communication Systems, Vol. 16, p81-96, 2003

[6] Hawa, M.; Petr, D.W.,Quality of service scheduling in cable and broadband wireless access systems, Tenth IEEE International Workshop on Quality of Service, p247-255, 2002

[7] Bernard Fong et al.,” On the Scalability of Fixed Broadband Wireless Access Network Deployment,” IEEE Communications Magazine, vol. 42, no. 9, pp. S12-S18, September 2004.

[8] GuoSong Chu; Deng Wang; Shunliang Mei; ”A QoS architecture for the MAC protocol of IEEE 802.16 BWA system” Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on , Volume: 1, July 2002, PP. 435-39