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標題: IEEE 802.11e無線區域網路中控制區段之輪詢排程演算法研究
The Study of Polling Scheduling Algorithm in CAP for IEEE802.11e Networks
作者: 廖志偉 
Liao, Chih-Wei 
關鍵字: 802.11e;無線區域網路;WLAN;QoS;Scheduling;服務品質保證;排程
出版社: 資訊科學系所
引用: [1] IEEE 802.11 WG, “Reference number ISO/IEC 8802-11:1999/Amd 1:2000(E); IEEE Std 802.11a-1999 , 2000. Information technology- telecommunications and information exchange between systems- local and metropolitan area networks- specific requirements part 11: wireless lan medium access control (MAC) and physical layer (PHY) specifications amendment 1: high-speed physical layer in the 5 GHz band, ” 2000 [2] IEEE 802.11 WG, “IEEE Std 802.11b-1999/Cor 1-2001. IEEE standard for information technology -telecommunications and information exchange between systems - local and metropolitan area networks - specific requirement. Part 11: wireless LAN medium access control (MAC) and Physical layer (PHY) specifications. Amendment 2: higher-speed physical layer (PHY) extension in the 2.4 GHz band - corrigendum 1, ” November 2001 [3] J. Prado et al., "Mandatory TSPEC Parameters and Reference Design of a simple scheduler" submitted to the IEEE 802.11e Task Group, Reference IEEE 802.11-02/705r0, November 2002. [4] A. Soomro, S. Shankar, J. D. Prado, Y. Ohtani, J. Kowalski, F. Simpson and I. L. W. Lih, “TGe Scheduler - Minimum Performance Requirements”, IEEE 802.11-02/709r0, 2002. [5] S. Kandala et al., “Normative Text for TGe Consensus Proposal,” IEEE 802.11-02/612r0, Sept. 2002. [6] IEEE Std 802.11e/D5.0 July 2003, Draft Supplement to IEEE standard for Telecommunications and Information exchange between systems - LANMAN specific requirements. Part 11: wireless LAN Medium Access Control (MAC) and Physical Layer(PHY). [7] S. Mangold, S. Choi, P. May and G. Hiertz, “IEEE 802.11e - Fair Resource Sharing between Overlapping Basic Service Sets,” in Proc. PIMRC 2002, pp. 166-171, Sept. 2002. [8] S. Mangold, “IEEE 802.11e Wireless LAN for Quality of Service,” in Proc. European Wireless '02, Florence, Italy, Feb. 2002. [9] A. Grilo, M. Macedo and M. Nunes, “A scheduling algorithm for QoS support in IEEE802.11e Networks,” Wireless Communications, vol. 10, issue 3, pp. 36-43, June 2003. [10] A. Grilo and M. Nunes, “Performance Evaluation of IEEE 802.11e,” PIMRC 2002, vol. 1, pp. 511-517, Sept. 2002. [11] L. Zhang and S. Zeadally, “HARMONICA: Enhanced QoS Support with Admission Control for IEEE 802.11 Contention-based Access,” Proc. IEEE RTAS '04, Toronto, Canada, May 2004, pp. 64-71.
本篇論文提出了一個適用於IEEE 802.11e無線網路的QoS排程演算法。在IEEE 802.11e網路架構中HCF(Hybrid Coordination Function)能夠被用來提供QoS服務品質的保證,而EDCF(Enhanced Distributed Coordination Function)雖然有相對優先權的觀念,但沒辦法保證資料於傳輸中的服務品質。而在HCF協定之中輪詢傳送機會(polled TXOP)的排程方式將對資料流於傳送時的傳輸品質產生很大的影響。我們將針對此問題作深入研究,並提出一個新的排程演算法來做改善。

This thesis presents a scheduling algorithm for the IEEE 802.11e HCF (Hybrid Coordination Function) under definition by the IEEE 802.11e task group. HCF can be used to provide IP quality of service guarantees in IEEE 802.11e infrastructure WLANs. The EDCF (Enhanced Distributed Coordination Function) is mainly used for data transmission without QoS guarantees. Scheduling Algorithm used by HCF will have a change impact on. We study the polled TXOP(Transmission opportunity) method in the standard and purpose a new improved method for better performance.
其他識別: U0005-2906200609330900
Appears in Collections:資訊科學與工程學系所

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