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We investigate the latency and network lifetime-aware clustering problem for data collection in a WSN (Wireless Sensor Network) with one base station and propose a novel approach. Our approach consists of a polynomial-time heuristic for constructing clusters, a polynomial-time heuristic and an ILP (Integer Linear Programming) algorithm for constructing a routing tree for inter-cluster communication...
Secure data collection is an important problem in wireless sensor networks. Different approaches have been proposed. One of them is overhearing. We investigate the problem of constructing a shortest path overhearing tree with the maximum lifetime. We propose three approaches. The first one is a polynomial-time heuristic. The second one uses ILP (Integer Linear Programming) to iteratively find a monitoring...
In WSNs (Wireless Sensor Networks), sensor nodes are typically battery powered. As a result, network lifetime becomes a major optimization objective in the design of a WSN. We investigate the problem of lifetime-aware data collection in a WSN with only one base station. We propose an efficient distributed algorithm for constructing a routing DAG (Directed Acyclic Graph), namely, R-DAG, for data collection...
WSN (Wireless Sensor Network) has a wide range of applications. As a result, security problems become increasingly important. We investigate the problem of minimising the failure rate of packet delivery in the presence of the modification attacks and the selective forwarding attacks in a static WSN with one base station without using expensive encryption/decryption algorithms. We propose a novel heuristic...
The new dynamic spectrum environment in cognitive radio networks necessities novel routing protocols which should be spectrum-aware, self-configured, high-adaptive and robust to match the dynamic nature of Cognitive Radio Networks (CRN) and exploit the available spectrum efficiently. In this paper, we present ASAR, which is a biologically inspired routing solution for CRN. In our routing algorithm,...
Traffic driven based load balancing routing scheme in CogMesh network is proposed. SMC (secondary mesh client) accessing to CMR (cognitive mesh router) using Ad Hoc way is considered in the paper. A novel routing metric was proposed to describe the load state of a path, which was suitable for traffic demand. Choosing a light-loaded route and a light-loaded link guarantees a lower end-to-end delay...
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