Wireless Mesh Network Performance for Urban Search and Rescue Missions

Ribeiro, Cristina; Ferworn, Alexander; Tran, Jimmy

doi:10.5121/ijcnc.2010.2203

Cited by 6 publications

(2 citation statements)

References 25 publications

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“…Once a robot enters a collapsed structure, communicating with the robot can be difficult for a number of practical reasons. Wireless communications have been shown to quickly degrade through reinforced concrete [29]. One of the reasons that robots have not been deployed in greater numbers is that the robot/sensor package can be very expensive and would be a huge financial loss if a robot, by necessity, would need to be abandoned within an urban collapse.…”

Section: Sensorsmentioning

confidence: 99%

Disaster scene reconstruction: modeling, simulating, and planning in an urban disaster environment

Herman¹

2022

Preprint

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Urban disasters are characterized by buildings collapsing. The rubble of collapsed buildings forms a chaotic, unplanned and unmapped environment in which emergency first responders must find the surviving occupants who are now trapped and hidden in the dangerous rubble. The more knowledge that search teams have pertaining to the resulting environment the better they are equipped to plan and rescue survivors. Our research demonstrates that simulations can be used to inspect urban disaster-related terrain remotely and safely within hours of the actual disaster. The Disaster Scene Reconstruction system allows for the creation of accurate 3D models and a simulation providing custom functionality --such as virtual structural inspection and--providing first responders the ability to plan actions in the simulated environment. The goal of this research is to demonstrate that the functionality we developed can be used to provide accurate information to users and potentially assist search and rescue planning efforts.

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Section: Sensorsmentioning

confidence: 99%

Disaster scene reconstruction: modeling, simulating, and planning in an urban disaster environment

Herman¹

2022

Preprint

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“…As an emerging and promising technology, a wireless mesh network (WMN) can provide high QoS to end users as the last mile technique for data delivery over the Internet. Different from mobile ad hoc networks (MANET), WMN has its own unique features [1]- [3]. At first, it has an infrastructure consisting of stationary or slow mobile wireless routers and gateways through which mesh clients connect to the Internet.…”

Section: Introductionmentioning

confidence: 99%

Two-Stage Coordination Multi-Radio Multi-Channel MAC Protocol for Wireless Mesh Networks

Zhao¹,

Shimamoto²

2011

IJCNC

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Within the wireless mesh network, a bottleneck problem arises as the number of concurrent traffic flows (NCTF) increases over a single common control channel, as it is for most conventional networks. To alleviate this problem, this paper proposes a two-stage coordination multi-radio multi-channel MAC (TSC-M2MAC) protocol that designates all available channels as both control channels and data channels in a time division manner through a two-stage coordination. At the first stage, a load balancing breadth-first-search-based vertex coloring algorithm for multi-radio conflict graph is proposed to intelligently allocate multiple control channels. At the second stage, a REQ/ACK/RES mechanism is proposed to realize dynamical channel allocation for data transmission. At this stage, the Channel-and-Radio Utilization Structure (CRUS) maintained by each node is able to alleviate the hidden nodes problem; also, the proposed adaptive adjustment algorithm for the Channel Negotiation and Allocation (CNA) sub-interval is able to cope with the variation of NCTF. In addition, we design a power saving mechanism for the TSC-M2MAC to decrease its energy consumption. Simulation results show that the proposed protocol is able to achieve higher throughput and lower end-to-end packet delay than conventional schemes. They also show that the TSC-M2MAC can achieve load balancing, save energy, and remain stable when the network becomes saturated.

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