Location management methods in TD-SCDMA (French text)

Location-based routing algorithms are promising in reducing the overhead of routing in ad hoc network. Existing location-based routing algorithms employ the Global Positioning System (GPS) as their location information provider, and synchronize the information network-wide. But we also see many limitations of these protocols. First of all is the use of GPS is not realistic and only available in certain circumstances. Second is the synchronizing of the location information in the ad hoc network raises overhead, and hence decreases the usability of these algorithms.; The objective of this work is to develop a novel algorithm that could take full advantages of the location information, while avoid the disadvantages mentioned above. This work proposes to use local position instead of global position in location-based algorithms. The conceived routing algorithm is prototyped from the Ad-Hoc On-demand Distance Vector (AODV) routing algorithm. Hence it synchronizes the location information reactively. Smart antennas are employed to obtain local position information; hence the algorithm is freed from GPS. The algorithm applies ad hoc position algorithms to build local network coordinates, and adapts new strategies to reduce control overhead. (Abstract shortened by UMI.)...