As large-scale sensor networks become more feasible, properties such as stateless nature and low maintenance overhead make postion based routing increasingly more attractive. Motivated by the fact that sensor networks would probably be deployed in a three dimensional space, we present a novel 3D geographical routing algorithm (3DGR) that makes use of the position information to route packets fr...

In position-based routing protocols, each node periodically transmits a short hello message (called beacon) to announce its presence and position. Receiving nodes list all known neighbor nodes with their position in the neighbor table and remove entries after they have failed to receive a beacon for a certain time from the corresponding node. Especially in highly dynamic networks, the informati...

Routing in Wireless Sensor Networks (WSNs) is a very challenging task due to the large number of nodes, their mobility and lack of proper infrastructure. Since the sensors are battery powered devices, energy efficiency is considered as one of the main factors in designing routing protocols in WSNs. Most of energy-aware routing protocols are mere energy savers that attempt to decrease the energy...

Wireless Ad-Hoc networks are collection of nodes that can communicate without any fixed infrastructure. A crucial problem in Ad-Hoc networks is finding an efficient route between a source and a destination. The need for scalable and energy efficient protocols, along with the recent availability of small, inexpensive and low power positioning instruments justify introducing position based routin...

In this paper, an adaptive routing algorithm for two-dimensional mesh network-on-chips (NoCs) is presented. The algorithm, which is based on Dynamic XY (DyXY), is called Enhanced Dynamic XY (EDXY). It is congestion-aware and more link failure tolerant compared to the DyXY algorithm. On contrary to the DyXY algorithm, it can avoid the congestion when routing from the current switch to the destin...

A new kind of ad hoc network is hitting the streets: Vehicular Ad Hoc Networks (VANets). In these networks, vehicles communicate with each other and possibly with a roadside infrastructure to provide a long list of applications varying from transit safety to driver assistance and Internet access. In these networks, knowledge of the real-time position of nodes is an assumption made by most proto...

VANETs (Vehicular Ad hoc Networks) are highly mobile wireless ad hoc networks and will play an important role in public safety communications and commercial applications. Routing of data in VANETs is a challenging task due to rapidly changing topology and high speed mobility of vehicles. Conventional routing protocols in MANETs (Mobile Ad hoc Networks) are unable to fully address the unique cha...

The user anonymity is an important security factor to protect personal privacy in mobile ad hoc networks. Recently, Wu et al. proposed an ad hoc on-demand position-based private routing protocol (AO2P), but the AO2P is vulnerable to some collaborative attacks, such as blackhole & wormhole attacks. Once any compromised node is included in a route, it can conduct different attacks, which are very...

Location services are used in mobile ad hoc and hybrid networks either to locate the geographic position of a given node in the network or for locating a data item (content). One of the main usages of position location services is in location based routing algorithms. In particular, geographic routing protocols can route messages more efficiently to their destinations based on the destination n...

In a recent work, we published the Location Prediction Based Routing (LPBR) protocol for mobile ad hoc networks (MANET). LPBR is the first such beaconless MANET protocol to simultaneously minimize the hop count of the paths as well as the routing control overhead measured in terms of the number of control messages received during an on-demand broadcast discovery. LPBR works as follows: If the m...