A wireless Mobile Adhoc NETwork (MANET) is an infrastructure-less mobile network which is based on radio to radio multi-hoping and has no centralized controller or a fixed router. All nodes are capable of movement and can be connected dynamically in an arbitrary manner. Due to the dynamic nature of network topology, frequent mobility, bandwidth limitation, limited battery power, routing in MANETs is a challenging task. Routing protocols are vital for the proper functioning of Adhoc networks. A routing protocol in MANET should fairly distribute the routing tasks among mobile hosts. Most current routing protocols for mobile Adhoc networks consider the shortest path with minimum hop count as optimal route without any consideration of any particular node's traffic and thus degrading the performance by causing serious problems in mobile node like congestion, power depletion and queuing delay. Therefore it is very attractive to investigate Routing protocols which use aRouting Metric to Balance Loadin Adhoc networks. In this paper we present various load Balanced Routingprotocols for efficient data transmission in MANETs.
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