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Network coding has been introduced as a new paradigm for network routing protocols in recent years. The wide range of advantages of network coding, such as energy saving, throughput improvement and congestion mitigation, have been demonstrated in many practical systems. However, the nature of packet mixing, optimization of forwarding nodes selection cause the network coding based routing protocols...
Active black hole attack is one of the most severe security threats that can be easily employed against normal routing in mobile ad hoc networks. In order to intrude into routing path, attacker always deceiving others that it has the shortest path to the destination. Once the attacker successfully intrudes into routing path, it can disrupt all data transmission. Most of the existing defense schemes...
In this paper we study quality-of-service (QoS) provisioning in an ad hoc cognitive radio network with spectrum underlay. Both streaming traffic and non-real-time (nrt) data traffic are considered. An admission control scheme is first proposed based on relatively static information such as path loss and average interference levels in order to guarantee the average throughput of each connection. Outage...
In this paper, a distributed cooperative multi-channel spectrum sensing scheme is proposed for the non-infrastructure based cognitive radio networks. The proposed scheme has iterative property and is carried out round-by-round. In each round, each secondary user selects a few primary channels as the candidates for sensing based on primary signal-to-noise ratio. Then, the users with the same selected...
In this paper, a new MAC protocol, called Reliable Busy Tone Multiple Access with Neighboring Information Table (RBTMA-NIT), is proposed for safety applications in Vehicular ad hoc networks (VANETs). Derived from the conventional busy tone multiple access (BTMA), RBTMA-NIT introduces three mechanisms to reduce the transmission delay of emergency messages: 1) the original emergency message and its...
A mobile ad-hoc network (MANET) is usually power constrained due to the limited battery energy on each node. For MANETS, energy efficiency is crucial for the design of new routing protocols. In this paper, a new energy-aware routing algorithm, called Energy Saving Ad-hoc On-demand Distance Vector (ESAODV) routing, is proposed. In the route discovery process of ESAODV, intermediate nodes estimate the...
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