A cluster in a MANET
In fact, clustering provides a convenient framework for the development of important features such as node separation among clusters, channel access, routing, power control, and virtual circuit support bandwidth allocation. The entire population of nodes is grouped into clusters.
Data communication in wireless mobile networks is challenging issue due to dynamic topologies, bandwidth constraints; power constrains operation, and limited physical security.
Accessing remote data is challenging task in mobile Ad Hoc Networks. Two problems have to be solved: (1) How to learn about available data in the networks; and (2) How to access desired data even when the original copy of the data is unreachable. A group of mobile nodes collectively host a set of data to improve data accessibility for all members of the group. They exchange data availability information by broadcasting advertising (ad) messages to the group using an adaptive sending rate policy. The ad messages are used by other nodes to derive a local data lookup table, and to reduce data redundancy within a connected group.
In a mobile ad-hoc network (MANET), many nodes are either battery operated or otherwise power-constrained. Due to slow advancement in battery technology, battery power continues to be constrained resource and so power management in wireless networks remains a necessary mechanism. Because nowadays, most of the mobile devices are equipped with low power batteries, it could be impossible for a mobile device to sustain for a long time if it send and receive data more often like in the wired network.
The entire research is mainly focusing on accessing remote data, power management, efficient routing, and Location management in MANET.
