Multipoint relay
Encyclopedia
Multi Point Relays are nodes in wireless Ad-Hoc
Ad hoc
Ad hoc is a Latin phrase meaning "for this". It generally signifies a solution designed for a specific problem or task, non-generalizable, and not intended to be able to be adapted to other purposes. Compare A priori....

 networks that do the job of relaying messages between nodes, they also have the main role in routing and selecting the proper route from any source to any desired destination node - Arash Modaresi.

OLSR routing protocol
Route assignment
Route assignment, route choice, or traffic assignment concerns the selection of routes between origins and destinations in transportation networks. It is the fourth step in the conventional transportation forecasting model, following trip generation, trip distribution, and mode choice...

 : MPRs advertise link state information for their MPR selectors periodically in their control messages. MPRs are also used to form a route from a given node to any destination in route calculation. Each node periodically broadcasts Hello message for the link sensing, neighbor’s detection and MPR selection process. Each node can get topology up to 2 hops from Hello messages. The information about the symmetric one hop and two hops neighbors is used to calculate the MPR set. Each node selects set of neighbor nodes as MPRs from among 1-hop neighbors with symmetric link, which covers all the two, hop neighbors and records in MPR selector table. MPR is recalculated when a change in one-hop or two - hops neighborhood topology is detected. Every node periodically broadcasts list of its MPR selectors instead of the whole list of neighbors. Upon receipt of MPR information, each node recalculates and updates routes to each known destination. In order to exchange the topological information, the Topology Control (TC) message is broadcasted throughout the network. Only MPRs need to forward TC messages each node maintains the routing table
Routing table
In computer networking a routing table, or Routing Information Base , is a data table stored in a router or a networked computer that lists the routes to particular network destinations, and in some cases, metrics associated with those routes. The routing table contains information about the...

 in which routes for all available destination nodes are kept because of the proactive nature - (Performance Comparison of Wireless Mobile AdHoc Network Routing)- Arun Kumar
Arun Kumar
- Biography :Arunkumar, better known as the Editor of the Hit-Maker Priyadarshan, owns to his credit a span of 10 years experience as a Film Editor in this industry...

B. R , Lokanatha C. Reddy , Prakash S. Hiremath
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