With the development of ad hoc network technology, its mobility models have recently emerged as a premier research topic. Several mobility models of ad hoc network were introduced in this paper, and a formula to calculate the connectivity of mobile ad hoc network was proposed. Three of those mobility models were simulated in NS2.The relationship function among the number of nodes, the range of ...

There is still no consistent definition of general ad hoc network properties. All introduced protocols for ad hoc networks are based on different assumptions and security requirements, and are consequently suited for specific applications only. Due to the broad field of applications, a general security model can still not be found in any literature. We define two ad hoc network categories, name...

Ad hoc networks are characterized by multihop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols. We compare the performance of three routing protocols for mobile ad hoc networks: Dynamic Source Routing (DSR), Ad Hoc On-Demand Distance Vector Routing (AODV), location-aided routing (LAR1).Our evaluation is based on energy consumption ...

A mobile ad-hoc network (MANET), a set of wirelessly connected sensor nodes, is a dynamic system that executes hop-by-hop routing independently with no external help of any infrastructure. Proper selection of cluster heads can increase the life time of the Ad-hoc network by decreasing the energy consumption. Although different methods have been successfully proposed by researchers to tackle...

Wireless Ad-hoc network is one of the most innovative network technologies which are carried out using multicasting applications in various domains. Partially Observable Markov Decision Process (POMDP) provided higher structural security but did not provide multicasting packets in the wireless ad-hoc network. Works conducted on Resource Biasing Approach attained multi casting efficiency by incr...

Now a day, security in Mobile Ad hoc Network (MANET) is very important issue. Due to dynamic topology and mobility of nodes, Mobile Ad hoc Networks are more vulnerable to security attacks than conventional wired and wireless network. Nodes of Mobile Ad hoc Network communicate directly without any central base station. That means in ad hoc network, infrastructure is not required for establishing...

Quality of Service (QoS) provisioning and management in ad hoc networks remains a challenging task. Existing research focuses either on providing QoS or on network management, in ad hoc networks. However, a comprehensive approach to QoS management in ad hoc networks, i.e. network management in support of service differentiation, QoS robustness, and network survivability is still lacking. In thi...

Wireless sensor ad-hoc network usually applied in a monitoring system like monitoring temperature, humidity or even any triggering inputs from a connected peripheral device. The approach of wireless ad hoc network for monitoring video data is under preliminary investigation and development because video streaming requires larger storage, quality channel, less jittering and low packet loss. The ...