지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.7
- 수록면
- 653 - 660 (8page)
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초록· 키워드
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This paper deals with the problem of unfairness among uplink TCP (Transmission Control Protocol) flows associated with frame aggregation employed in IEEE 802.11n WLANs (Wireless Local Area Networks). When multiple stations have uplink TCP flows and transmit TCP data packets to an AP (Access Point), the AP has to compete for channel access with stations for the transmission of TCP ACK (acknowledgement) packets to the stations. Due to this contention-based channel access, TCP ACKs tend to be accumulated in the AP"s downlink buffer. We show that the frame aggregation in the MAC (Medium Access Control) layer increases TCP ACK losses in the AP and leads to the serious unfair operation of TCP congestion control. To resolve this problem, we propose the TAC (TCP ACK Compression) mechanism operating at the top of the AP"s interface queue. By exploiting the properties of cumulative TCP ACK and frame aggregation, TAC serves only the representative TCP ACK without serving redundant TCP ACKs. Therefore, TAC reduces queue occupancy and prevents ACK losses due to buffer overflow, which significantly contributes to fairness among uplink TCP flows. Also, TAC enhances the channel efficiency by not transmitting unnecessary TCP ACKs. The simulation results show that TAC tightly assures fairness under various network conditions while increasing the aggregate throughput, compared to the existing schemes.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. PROBLEM STATEMENT
Ⅲ. TCP ACK COMPRESSION MECHANISM
Ⅳ. PERFORMANCE EVALUATION
Ⅴ. CONCLUSION
REFERENCES
참고문헌 (16)
참고문헌 신청
1. [학술지(정기간행물)] - L. Munõz / 2004 / Empowering next generation wireless personal communication netorks / IEEE Communication Magazine 42 (5) : 64 ~ 70
2. [학술대회논문] - D. J. Leith / 2005 / Using the 802.11e EDCF to achieve TCP upload fairness over WLAN links / Proc. of Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOPT) : 109 ~ 118
3. [학술지(정기간행물)] - H. T. Wu / 2003 / DCF+ : An enhancement for reliable transport protocol over WLAN / Journal of Computer Science and Technology 18 (2) : 201 ~ 209
4. [학술대회논문] - Y. Hirano / 2009 / Uplink TCP traffic control with monitoring downlink buffer for throughput fairness over wireless LANs / Proc. of Personal, Indoor and Mobile Radio Communications (PIMRC) : 737 ~ 741
5. [학술대회논문] - F. Keceli / 2007 / TCP ACK congestion control and filtering for fairness provision in the uplink of IEEE 802.11 infrastructure basic service set / Proc. of IEEE International Conference on Communications (ICC) : 4512 ~ 4517
2. [학술대회논문] - D. J. Leith / 2005 / Using the 802.11e EDCF to achieve TCP upload fairness over WLAN links / Proc. of Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOPT) : 109 ~ 118
3. [학술지(정기간행물)] - H. T. Wu / 2003 / DCF+ : An enhancement for reliable transport protocol over WLAN / Journal of Computer Science and Technology 18 (2) : 201 ~ 209
4. [학술대회논문] - Y. Hirano / 2009 / Uplink TCP traffic control with monitoring downlink buffer for throughput fairness over wireless LANs / Proc. of Personal, Indoor and Mobile Radio Communications (PIMRC) : 737 ~ 741
5. [학술대회논문] - F. Keceli / 2007 / TCP ACK congestion control and filtering for fairness provision in the uplink of IEEE 802.11 infrastructure basic service set / Proc. of IEEE International Conference on Communications (ICC) : 4512 ~ 4517
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