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By S. Sarkar, et al.

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Extra info for Ad hoc mobile wireless networks - principles, protocols and applns

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11 is not optimized in a multihop environment. These technologies are used for single-hop Wireless Personal Area Networks (WPANs) and WLANs, respectively. The design of MAC protocols for a multihop ad hoc environment is a hot research issue. 2 Networking Issues Most of the main functionalities of the networking protocols need to be redesigned. ­ etworking protocols use one-hop transmission services provided by the enabling N ­technologies to construct end-to-end delivery service from a sender needing to locate the receiver inside the network.

A mobile ad hoc network (MANET) group has been formed within IETF. The primary focus of this working group is to develop and evolve MANET specifications and introduce them to the Internet standard track. The goal is to ­support mobile ad hoc networks with hundreds of routers and solve challenges in this kind of network. Some challenges that ad hoc networking faces are ­limited wireless ­transmission range, hidden terminal problems, packet losses due to transmission errors, ­mobility-induced route changes, and battery constraints.

In terms of energy and power, one has to consider not only node heterogeneity in terms of transmission power and energy availability, but also varying communication ranges, such as sleeping or active modes and the existence of energy supplies. Ad hoc networks raise new issues concerning security and privacy. Ad hoc networks inherit some of the traditional problems of wireless communication and wireless networking: � The wireless medium does not have proper boundaries outside of which nodes are known to be unable to receive network frames.

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Ad hoc mobile wireless networks - principles, protocols and applns by S. Sarkar, et al.


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