Hazy Sighted Link State Routing Protocol

About: Hazy Sighted Link State Routing Protocol is a research topic. Over the lifetime, 6936 publications have been published within this topic receiving 169377 citations. The topic is also known as: HSLS.

Energy-aware routing protocol for cognitive radio ad hoc networks

Abstract: Routing is one of the most important issues in multihop ad hoc networks. In the routing for mobile cognitive radio (CR) networks, the constraints on residual energy of each user and the requirements for primary user protection should be additionally taken into account. This study proposes a spectrum and energy-aware routing (SER) protocol for CR ad hoc networks, which is based on the dynamic source routing. To establish routes on-demand with reserved bandwidth, the protocol involves route selection and channel-timeslot allocation jointly. The proposed SER protocol can balance energy consumption, reduce routing overhead, eliminate contention between nodes and decompose traffics over different channels/timeslots. Extensive simulation shows that the proposed protocol achieves good performance in system throughput, network lifetime and mean message delay.

Performance of mobile ad hoc networking routing protocols in large scale scenarios

Abstract: As wireless ad hoc networks grow in size and complexity, the need to study and comprehend the scalability and behavior of these systems and their protocol components becomes essential. This paper presents a comprehensive study on the performance of common MANET (mobile ad hoc network) routing protocols in large-scale networks. The routing protocols used in this study include AODV, DSR, OLSR, and ZRP, which represents a good mix of reactive, proactive and hybrid protocols.

The NS2-Based Simulation and Research on Wireless Sensor Network Route Protocol

Abstract: Precision agriculture is the frontier of international contemporary agriculture in the twentieth century. The development of precision agriculture is a significant strategic choice of agriculture and agricultural science development in the new stage in China. As a novel technology of information acquisition and processing, WSN possesses a great strategic meaning in overall improving the modernize level of precision agriculture. Routing protocol is an indispensable part which ensures the normal operation of Wireless Sensor Network and the high efficient transmission of information. The existing routing protocols for Wireless Sensor Network are classified in this paper, while comparison and analysis research are also given on route structure, energy consumption, robustness, expansibility, node mobility, data fusion technology, whether QoS is supported and maximizing the network lifecycle of all kinds of routing protocols. At the end of this paper, a simulation research is made with NS2 network simulation software on the dynamic clustering process of LEACH protocols, which is a typical WSN routing protocol. The simulation results show that the random cluster-head selecting method in LEACH protocol cannot ensure the number of cluster heads completely equal to the anticipant optimal one during the dynamic clustering process, and it also exists that the distances between cluster heads are too close or sensors of some regions are too far from their cluster heads. All above these situations cause the decreasing of LEACH protocol's performance.

Cost-Aware Dynamic Routing Protocol for Wireless Sensor Networks - Design and Prototype Experiments

Abstract: This paper presents an energy-efficient multi-hop routing protocol for wireless sensor networks. The protocol uses cost metrics to create gradients from a source to a destination node. The cost metrics consist of energy, node load, delay, and link reliability information that provide a trade-off between performance and energy usage. A node can query routes from its neighbors, which allows efficient recovery from route losses. The protocol is the first cost-field based WSN routing protocol suitable for low processing and memory capacity nodes that is tested in a practical real-world environment. The protocol performance is evaluated on full scale prototype implementation consisting of 38 ultra-low power nodes in indoor environment. Compared to traditional flooding, the protocol requires only 25% of the bandwidth, while having smaller end-to-end delays.

An energy-efficient QoS routing for wireless sensor networks using self-stabilizing algorithm

Abstract: Transmission delays caused by wireless multi-hop communications usually hamper the time-sensitive applications on wireless sensor networks (WSNs). In this paper, transmission delay of data packets is quantified as the number of hops from a sensor to base station (BS), and a tolerable delay (TD) of each packet denotes the initial value of aging tag (AT) to present their QoS metric. On the basis of predictability of TDMA schedule, we propose a self-stabilizing hop-constrained energy-efficient (SHE) protocol for constructing minimum energy networks for hard real-time routing. The protocol first constructs ad hoc multi-hop paths within a cluster while controlling the number of nodes in the cluster so as to meet the TD of data packets from member nodes to their CH. An adaptive routing protocol is then proposed to convey aggregate data packets from CHs to BSs in different routes depending on their current AT values, thus meeting their QoS requirements while prolonging the network lifetime.