In this paper, we propose an efficient greedy location-aided routing (GLAR) scheme to improve the efficiency of location-aided routing (LAR) scheme for mobile ad hoc networks (MANETs). In this scheme, we first decide a baseline, which is the line between the source node and the destination node, for route discovery. The request packet is broadcasted in a request zone based on the baseline to de...

Sensor networks are a major new area of research. Some sensor applications, such as video surveillance, will need to be tethered for reasons of bandwidth and power requirements. To support ad hoc, economical installation of video cameras there is a need for new shared-medium protocols. IEEE 1394b FireWire is investigated as a near-future candidate for a shared-medium wired sensor network (WSN)....

Solving the Inventory Location-Routing Problem can been seen as an approach to optimize both a supply chain design and its operations costs. Assumptions consider that vehicles might visit more than one retailer per route and that inventory management decisions are included for a multi-depot, multi-retailer system with storage capacity over a discrete time planning horizon. The problem is to det...

Location-Aided Routing (LAR) 14] algorithm is an approach to utilize location information for mobile hosts, with the goal of decreasing routing-related overhead in mobile ad hoc networks. A number of optimizations are possible to improve performance of the basic LAR protocols. This paper mainly focuses how the basic operation of LAR can be improved by applying those optimization schemes.

Vehicular ad hoc networks (VANETs) are highly mobile wireless networks that are designed to support vehicular safety, traffic monitoring, and other commercial applications. The main benefit of VANET communication is seen in active safety systems that increase passenger safety by exchanging warning messages between vehicles in vanets where the topology change is very high a single protocol is no...

In geographical ad hoc routing, each node has to be equipped with Global Positioning System (GPS). This requirement is quite realistic today as such devices are inexpensive and can provide reasonable precision. In this work, we are interested in the optimization of the geographical routing protocol, LAR (Location-Aided Routing) [1]. LAR is an on-demand routing protocol using geographical locati...

Multi-hop vehicle-to-vehicle communication is useful for supporting many vehicular applications that provide drivers with safety and convenience. Developing multi-hop communication in vehicular ad hoc networks (VANETs) is a challenging problem due to the rapidly changing topology and frequent network disconnections, which cause failure or inefficiency in traditional ad hoc routing protocols. We...

Vehicular routing has been an extremely active research field in recent years with geo-routing protocols typically favoured over conventional topology based routing protocols due to their advantages in terms of scalability and lower overhead. Before a geo-routing protocol can transmit a packet, it must be aware of the position of the target node and is reliant upon a location service to supply ...

Vehicular ad hoc networks (VANETs) are mobile wireless networks which are designed to support public safety by traffic tracking. In VANETs, vehicle mobility will cause the communication links between vehicles leads to broken . Such link failures responsible for excessive increase in the routing overhead and degradation in network scalability. In this paper, we propose dynamic time scalable hybr...

Position-based routing protocols take advantage of location information to perform a stateless and efficient routing. To enable position-based routing, a node must be able to discover the location of the messages’ destination node. This task is typically accomplished by a location service. Recently, several location service protocols have been developed for ad hoc networks. In this paper we pro...