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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/38033完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 廖婉君(Wanjiun Liao) | |
| dc.contributor.author | Iam-Kin Chan | en |
| dc.contributor.author | 陳欽健 | zh_TW |
| dc.date.accessioned | 2021-06-13T15:57:45Z | - |
| dc.date.available | 2010-06-16 | |
| dc.date.copyright | 2008-06-16 | |
| dc.date.issued | 2008 | |
| dc.date.submitted | 2008-06-03 | |
| dc.identifier.citation | [1] A. Ghosh, D.R. Wolter, J.G. Andrews, and R. Chen, “Broadband wireless access with WiMax/802.16: current performance benchmarks and future potential,” IEEE Communications, vol. 43, pp. 129-136, 2005.
[2] K. Wongthavarawat and A. Ganz, “IEEE 802.16 based last mile broadband wireless military networks with quality of service support,”IEEE MILCOM, 2003. [3] C. Eklund, R. B. Marks, K. L. Stanwood, and S. Wang, “IEEE standard 802.16: a technical overview of the WirelessMANTM air interface for broadband wireless access,” IEEE Comm, pp. 98-107, June 2002. [4] IEEE Std 802.16-2004 ,'IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems,' 2004. [5] P802.16j Baseline Document, “Baseline Document for Draft Standard for Local and Metropolitan Area Networks,” IEEE 802.16j-06/026r2, Feb 2007 [6] H. Balakrishnan, V. N. Padmanabhan and R. H. Katz, 'The effects of asymmetry on TCP performance,' ACM Mobile Networks and Applications, 1999 [7] Y.-D. Li and W. Liao, “Improving TCP Performance for Asymmetric Networks,” Proc. IEEE ICC 2001. [8] W. Liao and H.-J. Ju, “Adaptive slot allocation in DOCSIS-based CATV networks,” IEEE Transactions on Multimedia, vol. 6, June 2004 [9] C.-H. Jiang, W. Liao, and T. Liu, “Adaptive Allocation for Downlink/Uplink Bandwidth for IEEE 802.16 (WiMAX) Wireless Networks: A Cross-Layer Approach,” Proc. IEEE GLOBECOM 2007. [10] The Network Simulator ns2. http://www.isi.edu/nsnam/ns [11] NS-2 Model for IEEE 802.16, National Institute of Standards and Technology. http://www.antd.nist.gov/seamlessandsecure/toolsuite.html [12] Xiangying Yang, Muthaiah Venkatachalam, Shantidev Mohanty, “Exploiting the MAC layer flexibility of WiMAX to systematically enhance TCP performance,” IEEE Mobile WiMAX Symposium 2007, March 2007 [13] Claudio Cicconetti, Luciano Lenzini, and Enzo Mingozzi, Carl Eklund, “Quality of service support in IEEE 802.16 networks,” IEEE Network, vol. 20, March 2006 [14] Jain, R., Chiu, D.M., and Hawe, W. (1984) A Quantitative Measure of Fairness and Discrimination for Resource Allocation in Shared Systems. DEC Research Report TR-301 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/38033 | - |
| dc.description.abstract | TCP應用是目前互聯網最廣為流傳的。IEEE 802.16 制定了不同應用的排序服務，但沒有TCP應用。 雖然TCP應用一般被歸類為盡全力傳送服務(best-effort)，但TCP效能非常受延遲和封包的遺失影響。因此，如何在IEEE 802.16j無線網路中作頻寬分配顯得十分重要。本論文探討不當頻寬分配對TCP的影響，並利用asymmetry ratio和IEEE 802.16j無線網路的特性提出一個動態頻寬分配的方法。這個方法會按照目前的網路狀況調整頻寬。我們利用ns2模擬其效能，結果顯示我們提出的方法，比其他固定頻寬分配，提供較高的網路吞吐量和公平性。 | zh_TW |
| dc.description.abstract | TCP based applications are the most popular Internet applications. IEEE 802.16 has specified the scheduling service for real-time and variable rate applications but not TCP based best-effort applications. Although such TCP applications are typically classified as ‘best-effort’, TCP performance is indeed very sensitive to delay and packet loss. Therefore, bandwidth allocation for enhancing TCP applications performance in IEEE 802.16j networks with relay stations is particularly interesting. We investigate the impact of improper bandwidth allocation on the performance of TCP. By considering the asymmetry ratio for TCP and the characteristics of IEEE 802.16j network, we propose an adaptive bandwidth allocation scheme which adjusts the bandwidth allocation according to the current traffic profile. The performance of our scheme is validated via ns-2 simulations. The results show that our scheme outperforms static allocation in terms of higher aggregate throughput and reasonable fairness among individual flows. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T15:57:45Z (GMT). No. of bitstreams: 1 ntu-97-R95942060-1.pdf: 1359339 bytes, checksum: 89b1feb9f8a75cb5f040ce37997a7295 (MD5) Previous issue date: 2008 | en |
| dc.description.tableofcontents | 口試委員會審定
誌謝 摘要 1 Abstract 2 Contents 3 List of Figures 4 List of Tables 5 Chapter 1 Introduction 6 1.1 IEEE 802.16j Network 7 1.2 Motivation and Related Work 9 1.3 Thesis Organization 11 Chapter 2 Adaptive Bandwidth Allocation Scheme 12 2.1 System Model and Problem Specification 12 2.2 Bandwidth Asymmetry Ratio for TCP over a Direct Link 16 2.3 Bandwidth Asymmetry Ratio for TCP over IEEE 802.16j 17 2.4 Adaptive Bandwidth Allocation Scheme 20 2.4.1 Distributed Allocation Scheme in Network with Relay stations 23 2.4.2 Centralized Allocation Scheme in Network with Relay stations 28 Chapter 3 Simulation 30 3.1 Simulation Environment 30 3.2 Performance Metrics 31 3.3 Simulation Results 31 Chapter 4 Conclusions 38 Reference 39 | |
| dc.language.iso | en | |
| dc.subject | 動態頻寬分配 | zh_TW |
| dc.subject | IEEE 802.16j | zh_TW |
| dc.subject | IEEE 802.16j | en |
| dc.subject | adaptive bandwidth allocation | en |
| dc.subject | relay stations | en |
| dc.title | IEEE 802.16j無線網路中TCP之動態頻寬分配研究 | zh_TW |
| dc.title | Adaptive Bandwidth Allocation for TCP Traffic in
IEEE 802.16j Networks with Relay Stations | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 96-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 林宗男(Tsungnan Lin),吳曉光(Hsiao-kuang Wu),周承復(Cheng-Fu Chou) | |
| dc.subject.keyword | IEEE 802.16j,動態頻寬分配, | zh_TW |
| dc.subject.keyword | IEEE 802.16j,adaptive bandwidth allocation,relay stations, | en |
| dc.relation.page | 40 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2008-06-04 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
| 顯示於系所單位： | 電信工程學研究所 | |
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