Abstract
Proposes a robust, self-organizing architecture for mobile ad hoc
networks. The network architecture, space division multiple access
(SDMA), relies on user location information and provides users access to
the communication channel based on their location. SDMA divides the
geographical space, where users are located, into smaller spaces. The
key element of the design is a one-to-one map between the space division
and the bandwidth division of time slots, frequency division, etc.
Therefore, SDMA is compatible with any multiple access scheme such as
TDMA, FDMA, and CDMA. The system requirement is the user information of
its location and a priori knowledge of the one-to-one map of location to
the bandwidth division. The scheme is self-starting and
self-maintaining. It provides collision-free access to the communication
medium for the users and facilitates communication address resolution
amongst the users. In addition, SDMA guarantees delay-bounded
communication. The paper presents the SDMA architecture and discusses
its advantages and disadvantages. Moreover, enhanced SDMA is suggested
to increase bandwidth efficiency
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