Mobile Ad hoc Networks COE 549 Routing Protocols

Mobile Ad hoc Networks COE 549 Routing Protocols III Tarek Sheltami KFUPM CCSE COE http: //faculty. kfupm. edu. sa/coe/tarek/coe 549. htm 1/1/2022

Outline n 1/1/2022 Self-study lecture 2

Position Unaware Routing n n n All the routing protocols that we have discussed so far can be called position unaware routing. Each node has an address and each node keeps track of the neighbours´ addresses. However, when a message has to be sent from a source to a destination, the source node is not aware of the current position of the destination. 1/1/2022 3

Position Aware Routing n n In contrast, in position aware routing, a source node knows the position or location of the destination node. The position information can be collected in different ways : n n From the direction and strength of the received wireless signals Through interfacing with a low-power Global Positioning System (GPS) and a satellite updating the positions of the nodes by sending signals to this GPS device. 1/1/2022 4

Location Services Distance Routing Effect Algorithm for Mobility (DREAM) n Quorum-Based Location Service n Grid Location Service (GLS) n Homezone Read this paper: Martin Mauve, et al, “A Survey on position based routing in ad-hoc networks “, IEEE Network Magazine 15 (6), pp. 30 -39, November 2001. n 1/1/2022 5