Localized topology generation mechanisms for wireless sensor networks

Zhou, Changjian; Krishnamachari, Bhaskar

doi:10.1109/glocom.2003.1258442

Cited by 44 publications

(43 citation statements)

References 7 publications

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“…With such a topology, if one of the cluster heads fails, the information from that local region fails to be delivered, while if the base station fails, the information from all the local regions covered by the base station fails to be delivered. The generation mechanisms of such a topology can be found in [1]. For the clustered topology with multi-tier, the cluster head further from the base station forwards the collected information from its local region to the next nearer cluster head which forwards this information together with its collected information to the final nearest cluster head which can forward all the collected information to the base station.…”

Section: Wireless Sensor Networkmentioning

confidence: 99%

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Directional Medium Access Control (MAC) Protocols in Wireless Ad Hoc and Sensor Networks: A Survey

Wong

Chen

Chin

2015

JSAN

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This survey paper presents the state-of-the-art directional medium access control (MAC) protocols in wireless ad hoc and sensor networks (WAHSNs). The key benefits of directional antennas over omni-directional antennas are longer communication range, less multipath interference, more spatial reuse, more secure communications, higher throughput and reduced latency. However, directional antennas lead to single-/multi-channel directional hidden/exposed terminals, deafness and neighborhood, head-of-line blocking, and MAC-layer capture which need to be overcome. Addressing these problems and benefits for directional antennas to MAC protocols leads to many classes of directional MAC protocols in WAHSNs. These classes of directional MAC protocols presented in this survey paper include single-channel, multi-channel, cooperative and cognitive directional MACs. Single-channel directional MAC protocols can be classified as contention-based or non-contention-based or hybrid-based, while multi-channel directional MAC protocols commonly use a common control channel for control packets/tones and one or more data channels for directional data transmissions. Cooperative directional MAC protocols improve throughput in WAHSNs via directional multi-rate/single-relay/multiple-relay/two frequency channels/polarization, while cognitive directional MAC protocols leverage on conventional directional MAC protocols with new twists to address dynamic spectrum access. All of these directional MAC protocols are the pillars for the design of future directional MAC protocols in WAHSNs.

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Section: Wireless Sensor Networkmentioning

confidence: 99%

“…On the other hand, for circular-based type of pure RTS/CTS-based DMAC protocols, there is only a DRTS/CCTS-based DMAC protocol. There are survey papers for DMAC protocols for WAHNs in the literature [1][2][3][4][5][6]. The differentiating factor in this survey paper for DMAC protocols is in its main contribution.…”

mentioning

confidence: 99%

Directional Medium Access Control (MAC) Protocols in Wireless Ad Hoc and Sensor Networks: A Survey

Wong

Chen

Chin

2015

JSAN

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“…Policies must establish rules to dynamically act on WSNs based on analysis of collected data. In the routing context, these actions can trigger changes in the routing strategy, such as an adaptive solution that chooses dynamically either a reactive or a proactive behavior based on the measured traffic [7], or still in the case of a proactive tree [29], change the parent selection strategy according to a specific routing metric.…”

Section: Policy-based Adaptive Routing In Wsnsmentioning

confidence: 99%

Policy-Based Adaptive Routing in Autonomous WSNs

et al. 2005

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Abstract. Wireless sensor networks (WSNs) are employed in different domains and applications. The resource constraint on such networks, many times composed of hundreds to thousands of devices, and the requirement of autonomous operation become their management a challenging task. This work applies policies, a well-known approach in network management, in the core task of routing in autonomous WSNs. Policies are used to establish rules to take dynamic actions on the network according to its state. Our scheme offers a high-level and flexible way to realize management tasks related to routing in WSNs, which can be defined in a progressive way as knowledge from the environment is acquired or application requirements change. Case studies employing a policy-based adaptive hybrid solution allows the autonomous selection of the best routing strategy in view of network conditions and application requirements. Simulation results show the benefits and resource savings offered by the use of policies for adaptive routing in WSNs.

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“…8 illustrate that the amount of coverage overlap is greater for square topology than for hexagonal and triangular one. If a square region is surrounded by six square regions, all having a PN, then (10) illustrates that the total overlapped area, s β , is more than 57 percent of S A . This implies that 57 percent of the network operation, the network will have to deal with the conflicts, which would reduce the effective network operation to around 40 percent.…”

Section: B Sensor Coverage Overlapsmentioning

confidence: 99%

“…The techniques described by H.T. Kung [9] and Congzhou [10] for parent selection without defining the actual coverage parameters appears to be hypothetical. Nirupama [5,6] assumed a square-grid topology for extension of existing sensor network, but did not define the original topology.…”

Section: Introductionmentioning

confidence: 99%

Coverage characteristics of symmetric topologies for pervasive sensor networks

Iqbal

Gondal

Dooley

Second IFIP International Conference on Wireless and Optical Communications Networks, 2005. WOCN 2005.

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Abstract-The success of pervasive computing environments comprising ubiquitous loco-dynamic sensing devices is very dependent upon the Coverage Characteristics (CCs) of the network topology. These characteristics include blanket coverage, network density, affects on surrounding environments and intra-sensor coverage overlaps. This paper presents a systematic mathematical model to quantitatively investigate the effects of CCs and provides a comparison with other well used topologies e.g. Hexagonal, Triangular and Square grid. The paper uses connectivity, density saturation, conflict regions and effectiveness of the topology as quality parameters in simulation studies for a disaster recovery network in various irregular terrains. Numerical as well as simulation results confirm the improved performance of Hexagonal Topology (HT) in terms of the above mentioned quality parameters which can be used to tune the network design to ensure the required QoS throughout the life of the network.

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Localized topology generation mechanisms for wireless sensor networks

Cited by 44 publications

References 7 publications

Directional Medium Access Control (MAC) Protocols in Wireless Ad Hoc and Sensor Networks: A Survey

Directional Medium Access Control (MAC) Protocols in Wireless Ad Hoc and Sensor Networks: A Survey

Policy-Based Adaptive Routing in Autonomous WSNs

Coverage characteristics of symmetric topologies for pervasive sensor networks

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