서지주요정보
TCP-ACK triggered bandwidth request in mobile WiMAX/WiBro (IEEE 802.16e) networks = IEEE 802.16e 시스템의 TCP-ACK triggered 대역폭 할당을 통한 TCP 성능 향상기법
서명 / 저자 TCP-ACK triggered bandwidth request in mobile WiMAX/WiBro (IEEE 802.16e) networks = IEEE 802.16e 시스템의 TCP-ACK triggered 대역폭 할당을 통한 TCP 성능 향상기법 / Noureddine Lasfar.
저자명 Noureddine Lasfar
발행사항 [대전 : 한국정보통신대학교, 2008].
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소장정보

등록번호

DM0001145

소장위치/청구기호

문지도서관2층 학위논문

ICU/MS08-142 2008

SMS전송 소장위치

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초록정보

In IEEE 802.16 networks, the bandwidth request-grant process introduced by this standard is required whenever a Subscriber Station (SS) has data packets to transmit in the uplink. Since IEEE 802.16 standard is an IP-based network, Transmission Control Protocol (TCP) is the most widely used protocol within it for a reliable data transmission. The robustness of TCP is the primary reason of its widespread usage in a wide variety of networking environments, especially asymmetric networks such as Mobile WiMAX/WiBro network. However, many researchers [1], [2], [3] have shown that the network asymmetry affects the performance of TCP because TCP protocol relies on feedback in the form of acknowledgments from the receiver to ensure reliability. In addition, the aforementioned bandwidth request-grant mechanism is not optimized for TCP protocol, since the uplink data packets stream can be disrupted due to the several stages of the process which introduces transmission delay and overheads of TCP data packets [4]. In this thesis, we propose a new mechanism, called TCP-ACK Triggered Bandwidth Request, for uplink TCP data transmission, where the Base Station (BS) can predict in advance TCP data packets, based on downlink TCP-ACK packets, and allocate the uplink bandwidth for the next TCP data transmission without using the original bandwidth request-grant process. The simulation results with NS-2 showed that the proposed scheme increases significantly the uplink throughput and reduces the transmission delay of TCP data packets.

서지기타정보

서지기타정보
청구기호 {ICU/MS08-142 2008
형태사항 iv, 55 p. : 삽도 ; 26 cm
언어 영어
일반주기 ITTP 과정 (공학일반석사)
지도교수의 영문표기 : Dae-Young Kim
지도교수의 한글표기 : 김대영
학위논문 학위논문(석사) - 한국정보통신대학교 : 공학부,
서지주기 References : p. 56-58
주제 802.16e
Mobile WiMAX
WiBro
TCP
Transport Protocol
ACK
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