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The wireless ad hoc networks are still in their infancy. The future of these networks would depend on the range of applications that they can efficiently support, which in turn would depend upon the underlying networking protocols. Since the wireless medium is fundamentally different from the wired medium, therefore the applicability of the OSI protocol stack to the wireless ad hoc networks needs to carefully evaluated and possibly a completely different architecture may be more suitable for wireless protocols. Recently there have been a lot of studies which show that cross-layer design is more suitable for wireless networks than the OSI stack model. In this paper, the authors evaluate the pros and cons of cross-layer design approach.
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