A Safe Multiple Access-Rates Transmission (SMART) Scheme for IEEE 802.11 Wireless Networks

Abstract— The IEEE 802.11 standard and enhanced amendments have defined fourteen transmission rates (1/2/5.5/6/9/11/12/ 18/22/24/33/36/48/54 Mb/s) for mobile stations to transmit and receive data frames. With the characteristic of modulation schemes, a higher level modulation scheme requires a higher Signal-to-Noise Ratio (SNR) and, consequently, the data rate is inversely proportional with the transmission distance. Using a higher level modulation scheme, a higher network throughput can be expected; however, the frame error probability will also become higher. Doubtlessly, it is an open issue of selecting a proper modulation scheme for a pair of mobile stations in timevarying indoor environment. This paper proposes a Safe Multiple Access-Rates Transmission (SMART) scheme for enhancing the reliability of data transmission in the IEEE 802.11 multi-rate infrastructure wireless networks. The SMART scheme provides reliable transmission by reserving a retransmission period, which immedia...

• Type: Conference
• Year: 2003
• Where: AINA
• Authors: Shiann-Tsong Sheu, Jenhui Chen, Hsueh-Wen Tseng, Hsien-Ta Chiang
• Keywords: AINA 2003, Computer Networks, Level Modulation Scheme, Modulation Scheme, Transmission Rate