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A Survey on Energy Efficiency for Wireless Mesh Network  [PDF]
Sarra Mamechaoui,Fedoua Didi,Guy Pujolle
International Journal of Computer Networks & Communications , 2013,
Abstract: Reduction of CO2 emissions is a major global environmental issue. Over the past few years, wireless andmobile communications are becoming increasingly popular with consumers. The Most popular kind ofwireless access is known as Wireless Mesh Networks (WMNs) that provide wireless connectivity throughlot cheaper and more supple backhaul infrastructure relative to wired solutions. Wireless Mesh Network(WMN) is a new emerging technology which has been adopted as the wireless internetworking solution forthe near future. Due to higher energy consumption in the information and communication technology (ICT)industries, and which would have an impact on the environment, energy efficiency has become a key factorto evaluate the performance of a communication network.This paper primarily focuses on the classification layer the greatest existing approaches devoted to theconservation of energy. It is also discussing the most interesting works on energy saving in WMNsnetworks.
A survey on energy efficiency for wireless mesh network  [PDF]
Sarra Mamechaoui,Fedoua Didi,Guy Pujolle
Computer Science , 2013, DOI: 10.5121/ijcnc.2013.5209
Abstract: Reducing CO2 emissions is an important global environmental issue. Over the recent years, wireless and mobile communications have increasingly become popular with consumers. An increasingly popular type of wireless access is the so-called Wireless Mesh Networks (WMNs) that provide wireless connectivity through much cheaper and more flexible backhaul infrastructure compared with wired solutions. Wireless Mesh Network (WMN) is an emerging new technology which is being adopted as the wireless internetworking solution for the near future. Due to increased energy consumption in the information and communication technology (ICT) industries, and its consequent environmental effects, energy efficiency has become a key factor to evaluate the performance of a communication network. This paper mainly focuses on classification layer of the largest existing approaches dedicated to energy conservation. It is also discussing the most interesting works on energy saving in WMNs networks.
Privacy Enhanced Key Agreement for Public Safety Communication in Wireless Mesh Networks  [cached]
Qian Wei,Jingsha He,Xing Zhang
Journal of Networks , 2011, DOI: 10.4304/jnw.6.9.1351-1358
Abstract: With the requirements of mobility, flexibility, and rapid response, wireless mesh networks are widely used for emergency services to improve the efficiency of public safety communication to prevent or respond to incidents that harm or endanger persons or property. In this paper, we propose a practical scheme of key agreement with asymmetric encryption based on station-to-station protocol and a privacy enhanced scheme of key agreement with directed signature using the elliptic curve ElGamal cryptography for public safety communication in wireless mesh networks. In the result, only both participants can gain the shared secret key, however, any party else can not understand the key agreement process clearly. We analyze the properties of security and efficiency of the privacy enhanced scheme of key agreement in comparison to the station-to-station protocol and the practical scheme of key agreement with asymmetric encryption. The results of experiment show that the privacy enhanced scheme of key agreement can provide resistance to the unknown key-share attacks, privacy protection for sensitive information included in signature and better efficiency in terms of computational cost.
Communications with decode-and-forward relays in mesh networks  [PDF]
Angel Bravo-Santos,Petar M. Djuric
Mathematics , 2012,
Abstract: We consider mesh networks composed of groups of relaying nodes which operate in decode-and-forward mode, where each node from a group relays information to all the nodes in the next group. We study these networks in two setups, one where the nodes have complete channel state information from the nodes that transmit to them, and another when they only have the statistics of the channel. We derive recursive expressions for the probabilities of errors of the nodes and present several implementations of detectors used in these networks. We compare the mesh networks with multihop networks, the latter being formed by a set of parallel sections of multiple relaying nodes. We demonstrate with numerous simulations that there are significant improvements in performance of mesh over multihop networks in various scenarios.
A TDMA-BASED MAC PROTOCOL SUPPORTING COOPERATIVE COMMUNICATIONS IN WIRELESS MESH NETWORKS  [PDF]
Hongzhi Jiao,Frank Y. Li
International Journal of Computer Networks & Communications , 2011,
Abstract: This paper proposes a TDMA-based medium access control protocol which enables cooperative communications in multi-hop wireless mesh networks. According to the proposed scheme, each router at the two-hop neighbourhood of each other is allocated to a specific time slot for accommodating either direct or cooperative transmissions in a coordinated manner, controlled by mini-slots which are part of the time slot. Benefiting from the elaborate mini-slot design, channel resources are fairly and efficiently allocated to each router so that no handshake is needed prior to each packet transmission. By providing access priority to cooperative transmission through an optimal relay which is determined by combined instantaneous relay channel conditions, higher system throughput can be achieved. To analyze the performance of the proposed cooperative protocol a Markov chain is introduced to model the behavior ofthe protocol. Simulation results demonstrate that the proposed MAC scheme can improve not only the one-hop transmission throughput but also the end-to-end throughput significantly. Moreover, the throughput performance of the proposed scheme is robust as packet size varies.
Emergency Response Communications and Associated Security Challenges  [PDF]
Muhammad Ibrahim Channa,Kazi M. Ahmed
Computer Science , 2010,
Abstract: The natural or man-made disaster demands an efficient communication and coordination among first responders to save life and other community resources. Normally, the traditional communication infrastructures such as land line or cellular networks are damaged and don't provide adequate communication services to first responders for exchanging emergency related information. Wireless ad hoc networks such as mobile ad hoc networks, wireless sensor networks and wireless mesh networks are the promising alternatives in such type of situations. The security requirements for emergency response communications include privacy, data integrity, authentication, key management, access control and availability. Various ad hoc communication frameworks have been proposed for emergency response situations. The majority of the proposed frameworks don't provide adequate security services for reliable and secure information exchange. This paper presents a survey of the proposed emergency response communication frameworks and the potential security services required by them to provide reliable and secure information exchange during emergency situations.
Mesh  [PDF]
Radu Vultur
Annals. Computer Science Series , 2006,
Abstract: Whether you just want to take a peek of a remote computer status, or you want to install the latest version of a software on several workstations, you can do all of this from your computer. The networks are growing, the time spent administering the workstations increases and the number of repetitive tasks is going sky high. But here comes MESH to take that load off your shoulders. And because of SMS commands you can take this “command center” wherever you will go. Just connect a GSM phone to the computer (using a cable, IrDA or Bluetooth) and lock/restart/shutdown computers from your LAN with the push of a cell phone button. You can even create your own SMS commands.This is MESH – the network administrator’s Swiss knife.
Mesh  [PDF]
Radu Vultur
Computer Science , 2009,
Abstract: Whether you just want to take a peek of a remote computer status, or you want to install the latest version of a software on several workstations, you can do all of this from your computer. The networks are growing, the time spent administering the workstations increases and the number of repetitive tasks is going sky high. But here comes MESH to take that load off your shoulders. And because of SMS commands you can take this "command center" wherever you will go. Just connect a GSM phone to the computer (using a cable, IrDA or Bluetooth) and lock/restart/shutdown computers from your LAN with the push of a cell phone button. You can even create your own SMS commands. This is MESH - the network administrator's Swiss knife
Index of communications
Renato Maggioni
Le Matematiche , 2005,
Abstract: communications index
Ubiquitous robust communications for emergency response using multi-operator heterogeneous networks  [cached]
Fragkiadakis Alexandros,Askoxylakis Ioannis,Tragos Elias,Verikoukis Christos
EURASIP Journal on Wireless Communications and Networking , 2011,
Abstract: A number of disasters in various places of the planet have caused an extensive loss of lives, severe damages to properties and the environment, as well as a tremendous shock to the survivors. For relief and mitigation operations, emergency responders are immediately dispatched to the disaster areas. Ubiquitous and robust communications during the emergency response operations are of paramount importance. Nevertheless, various reports have highlighted that after many devastating events, the current technologies used, failed to support the mission critical communications, resulting in further loss of lives. Inefficiencies of the current communications used for emergency response include lack of technology inter-operability between different jurisdictions, and high vulnerability due to their centralized infrastructure. In this article, we propose a flexible network architecture that provides a common networking platform for heterogeneous multi-operator networks, for interoperation in case of emergencies. A wireless mesh network is the main part of the proposed architecture and this provides a back-up network in case of emergencies. We first describe the shortcomings and limitations of the current technologies, and then we address issues related to the applications and functionalities a future emergency response network should support. Furthermore, we describe the necessary requirements for a flexible, secure, robust, and QoS-aware emergency response multi-operator architecture, and then we suggest several schemes that can be adopted by our proposed architecture to meet those requirements. In addition, we suggest several methods for the re-tasking of communication means owned by independent individuals to provide support during emergencies. In order to investigate the feasibility of multimedia transmission over a wireless mesh network, we measured the performance of a video streaming application in a real wireless metropolitan multi-radio mesh network, showing that the mesh network can meet the requirements for high quality video transmissions.
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