A MAC Protocol Mechanism for Mobile IP over Wireless LANs

  • Moon, Il-Young (Dept. of Inform. & Telecomm. Eng., Graduate School of Hankuk Aviation Univ.) ;
  • Roh, Jae-Sung (Dept. of Inform. & Comm. Eng., Seoil Colleg) ;
  • Cho, Sung-Joon (School of Electronics, Telecomm. and Computer Eng., Hankuk Aviation Univ.)
  • Published : 2003.12.01


Recently, the use of TCP/IP protocols over wireless LANs poses significant problems. In this paper, we have analyzed transmission control protocol (TCP) packet transmission time for mobile IP over wireless local area networks (LANs) using a proposed a new random backoff scheme. We call it as a proxy backoff scheme. It is considered the transmission time of TCP packet on the orthogonal frequency division multiplexing (OFDM) in additive white gaussian noise (AWGN) channel. From the results, a proposed proxy backoff scheme produces a better performance than an original random backoff in mobile IP over wireless LANs environment. Also, in OFDM/quadrature phase shift keying (QPSK) medium access control (MAC), we have obtained that the transmission time in wireless channel decreases as the TCP packet size increases.


Mobile IP;Wireless LANs;IEEE 802.11 MAC Protocol;IEEE 802.11a Physical Layer


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