Distributed cache updating for the dynamic source routing protocol ppt


08-Aug-2020 02:36

Each route update packet, in addition to the routing table information, also contains a unique sequence number assigned by the transmitter. The stations delay the transmission of a routing update by settling time so as to eliminate those updates that would occur if a better route were found very soon.The Wireless Routing Protocol (WRP) [Murthy96]is a table-based distance-vector routing protocol.Wireless networks can be classified in two types:- infrastructured network and infrastructureless (ad hoc) networks.

Ad hoc networks are very useful in emergency search-and-rescue operations, meetings or conventions in which persons wish to quickly share information, and data acquisition operations in inhospitable terrain [Royer99].When the network is relatively stable, incremental updates are sent to avoid extra traffic and full dump are relatively infrequent.In a fast-changing network, incremental packets can grow big so full dumps will be more frequent. If two routes have the same sequence number then the route with the best metric (i.e. Based on the past history, the stations estimate the settling time of routes.A mobile host communicates with a bridge in the network (called base station) within its communication radius.