Abstract
Problem statement: Network wide broadcasting is a fundamental operation in ad hoc networks. In broadcasting, a source node sends a message to all the other nodes in the network. Unlike in a wired network, a packet transmitted by a node in ad hoc wireless network can reach all neighbors. Therefore, the total number of transmissions (Forwarding nodes) used as the cost criterion for broadcasting. Approach: This study proposes a reliable and efficient broadcasting algorithm using minimized forward node list algorithm which uses 2-hop neighborhood information more effectively to reduce redundant transmissions in asymmetric Mobile Ad hoc networks that guarantees full delivery. Among the 1-hop neighbors of the sender, only selected forwarding nodes retransmit the broadcast message. Forwarding nodes are selected such a way that to cover the uncovered 2-hop neighbors. Results: Simulation results show that the proposed broadcasting algorithm provides high delivery ratio, low broadcast forward ratio, low overhead and minimized delay. Conclusion: In this study, reliable and efficient broadcasting algorithm in asymmetric Mobile Ad Hoc Networks using minimized forward node list algorithm has been proposed which provides low forward ratio, high delivery ratio while suppressing broadcast redundancy.
Highlights
Wireless ad hoc networks, called Mobile Ad Hoc Networks (MANETs) are collections of autonomous mobile nodes or terminals that communicate with each other by forming a multi-hop wireless radio network
Network wide broadcasting is a fundamental operation in ad hoc networks
The advantage is that one packet can be received by all neighbors; the disadvantage is that it interferes with the sending and receiving of other transmissions, creating exposed terminal problem, that is, an outgoing transmission collides with an incoming transmission and hidden terminal problem that is, two incoming transmissions collide with each other
Summary
Called Mobile Ad Hoc Networks (MANETs) are collections of autonomous mobile nodes or terminals that communicate with each other by forming a multi-hop wireless radio network. Each node in a MANET can act as both a host and a router to receive and forward packets and it can randomly move around, leave the network or switch off. Broadcasting refers to a process of transmitting a packet so that each node in a network receives a copy of this packet. A straightforward approach for broadcasting is blind Flooding where every node in the network forwards the packet exactly once. Flooding ensures the full coverage of the entire network, that is, the Broadcast packet is guaranteed to be sent to every node in the network, providing the network is static and connected and the MAC layer of the communication channel is error-free during the broadcast process.
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