Terrestrial versus mobile satellite based broadband networks for use in feeding wireless local loop systems

摘要

The paper provides a comparison between terrestrial and mobile satellite based broadband network planning for use in feeding terrestrial wireless local loop (WLL) systems. After presenting a typical WLL urban scenario the terrestrial design for connecting the WLL nodes to a terrestrial backbone network via two pops (point of presence) is given. This design is followed by introducing the envisioned TELEDESIC/sup TM/ broadband mobile satellite network including its technical features and limitations. Based on this mobile satellite broadband network a design for connecting the same WLL nodes as in the first case is provided. Special limitations due to the characteristic requirements of the 20/30 GHz transmission environment as well as dynamic channel allocation issues are taken into account.