Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
Abstract :
The authors have discussed several alternatives in wireless LAN design: media choice, operating frequency, operating mode, network topology, and access method. Although each technical choice presents both advantages and disadvantages, they argue that there is a design point that provides the best fit with present and future wireless LAN user needs. Considering all factors/spl mdash/including robustness, regulatory considerations, and interference avoidance/spl mdash/using a product based on the slow frequency-hopping spread spectrum, in the 2.4 GHz ISM band, relying on a base station remote station network topology and using a TDMA-based access method is the best way to meet the needs of radio-frequency wireless LAN users. The choices are many, but slow frequency-hopping at 2.4 GHz and TDMA-based medium access control provide the best mix of cost, range, interference, and performance.<>
Keywords :
frequency agility; local area networks; mobile radio systems; network topology; protocols; spread spectrum communication; time division multiple access; 2.4 GHz; 2.4 GHz ISM band; TDMA-based access method; UHF; access method; base station remote station network topology; interference avoidance; media choice; medium access control; network topology; operating frequency; operating mode; regulatory considerations; robustness; slow frequency-hopping spread spectrum; wireless LAN design alternatives; Batteries; Communication system security; Costs; Frequency conversion; Local area networks; Optical design; Optical filters; Optical receivers; Radio frequency; Wireless LAN;
