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Maximum lifetime routing in wireless sensor networks

IEEE-ACM TRANSACTIONS ON NETWORKING 2004年第4期12卷 609-619页

作者： Chang, JH Tassiulas, L Samsung Elect Co Ltd Telecommun R&D Ctr Suwon 442600 South Korea Univ Maryland Syst Res Inst College Pk MD 20742 USA Univ Maryland Dept Elect & Comp Engn College Pk MD 20742 USA

A routing problem in static wireless ad hoe networks is considered as it arises in a rapidly deployed, sensor based, monitoring system known as the wireless sensor network. Information obtained by the monitoring nodes needs to be routed to a set of designated gateway nodes. In these networks, every node is capable of sensing, data processing, and communication, And operates on its limited amount of battery energy consumed mostly in transmission and reception at its radio transceiver. If we assume that the transmitter power level can be adjusted to use the minimum energy required to reach the intended next hop receiver then the energy consumption rate per unit information transmission depends on the choice of the next hop node, i.e., the routing decision. We formulate the routing problem as a linear programming problem, where the objective is to maximize the network lifetime, which is equivalent to the time until the network partition due to battery outage. Two different models are considered for the information-generation processes. One assumes constant rates and the other assumes an arbitrary process. A shortest cost path routing algorithm is proposed which uses link costs that reflect both the communication energy consumption rates and the residual energy levels at the two end nodes. The algorithm is amenable to distributed implementation. Simulation results with both information-generation process models show that the proposed algorithm can achieve network lifetime that is very close to the optimal network lifetime obtained by solving the linear programming problem.

关键词： energy-sensitive routing power aware routing wireless ad hoc networks wireless sensor networks

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Requirements for identity management in next generation networks

Requirements for identity management in next generation netw...

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6th International conference on Advanced communication Technology

作者： Subenthiran, S Sandrasegaran, K Shalak, R Univ Technol Sydney Fac Engn Broadway NSW 2007 Australia

ISBN: (纸本)8955191197

Identity management will become crucial to the success of next generation networks (NGN). However, until now very little research has been done in this field. This paper presents the requirements for identity management in NGN which are currently being investigated by our research group. Our analysis is based on the characteristics and requirements of NGN architectures, services, network operators, end users, identity management requirements for web services, recent standardization efforts by various bodies, etc.

关键词： next generation networks network convergence identity management personalized services mobility credentials authentication authorization access control

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A New Dynamic Bandwidth Allocation Scheme in Ethernet Passive Optical Access networks

A New Dynamic Bandwidth Allocation Scheme in Ethernet Passiv...

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Proc. -ICPP 2004 on Mobile and Wireless Networking, High Perform. Sci. and Eng. Comput., Netw. Des. and Archit., Opt.Netw. Control and Manage., Ad Hoc and sensor Netw., Compile and Run Time Tech. for Parallel Comput.

作者： Shami, A. Bai, X. Assi, C. Ghani, N. Department of Electrical Eng. University of Western Ontario Canada Concordia Inst. for Info. Syst. Eng. Concordia University Canada Department of Electrical Eng. Tennessee Tech. University United States

ISBN: (纸本)0769521983

Ethernet passive optical networks (EPONs) have emerged as the best candidate for next-generation access networks. Propelled by rapid price declines in fiber optics and Ethernet components, these new EPON architectures combine the latest in optical and electronic advances, and are poised to become the dominant means of delivering bundled services over a single platform. This paper proposes a new EPON architecture capable of delivering bandwidth -intensive voice, data video services at distances beyond 25 km in the subscriber access network. Specifically, this paper proposes a two-stage EPON architecture that allows more end-users to share an OLT link, and enables longer access/reach. In addition, a new dynamic bandwidth allocation (DBA) algorithm is proposed to effectively and fairly allocate bandwidths between end users. This DBA algorithm can support differentiated services in a network with heterogeneous traffic. We conduct detailed simulation experiments to study the performance and validate the effectiveness of the proposed architecture and algorithms.

关键词： Optical communication

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Self-maintenance scheduling algorithms for next generation wireless networks

Self-maintenance scheduling algorithms for next generation w...

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IEEE Global Telecommunications conference, 2004. GLOBECOM '04.

作者： Haining Chen Hua Liu Hongyi Wu Center For Advanced Computer Studies University of Louisiana Lafayette LA USA

In this research, we study the self-maintenance scheduling problem in next generation wireless networks, with the consideration of resource maintenance constraints and resource conflicting constraints. We propose a linear programming (ILP) model and two heuristic algorithms, and evaluate their effectiveness and time complexity via analysis and simulations. Our results show that all of the proposed approaches can effectively schedule the requests within a reasonable period of time, but with different suitable scenarios. The ILP approach is effective when the number of requests is large and yields close-to-optimal results; the RC-Cliques-RM algorithm is suitable at the presence of many constraints; while the RC-RM-Cliques algorithm can scale to large size networks at the expense of reduced accuracy. It is anticipated that the proposed scheduling algorithms will be generally applicable to various mobile wireless networks where self-maintenance is needed.

关键词： Scheduling algorithm next generation networking Wireless networks Processor scheduling Wireless sensor networks Batteries Computer networks Spread spectrum communication Maintenance Humans

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IEEE Global Telecommunications conference Workshops (IEEE Cat. No.04EX958)

IEEE Global Telecommunications Conference Workshops (IEEE Ca...

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IEEE Globecom Workshops

The following topics are dealt with: wireless ad hoc networks; wireless sensor network; multimedia entertainment; computer-aided modeling; communication link design; next-generation transport network control; GMPLS; h...

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GLOBECOM '04. IEEE Global Telecommunications conference (IEEE Cat. No.04CH37615)

GLOBECOM '04. IEEE Global Telecommunications Conference (IEE...

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IEEE conference and Exhibition on Global Telecommunications (GLOBECOM)

The following topics are dealt with: coding and modulation techniques; cooperative diversity and relay channels; source and source-channel coding; ultra-wideband radio; MIMO systems; sensor networks; turbo codes; OFDM and frequency domain processing; spread spectrum and multiuser detection; communication system analysis; iterative techniques; information theory; LDPC codes; space-time coding; traffic modeling; DiffServ and AQM; wireless networks; TCP; optical networks and communications; MPLS and routing; switching; global Internet and next generation networks; Internet overlay networks; mobile wireless networks; network architectures; Internet protocol wireless networks; scheduling and queue management; optical burst switching; optical packet switching; GMPLS and multilayer networks; CDMA in optical networking; wavelength assignment; traffic engineering; network protection and restoration; network security and network management; ubiquitous computing security; denial of service attack detection and response; key management and virus detection; equalization; channel estimation; signal processing for OFDM; communication signal processing; CDMA signal processing; multimedia networks and systems; quality of service; satellite communications; ad hoc networks; MAC protocol; interference cancellation; wireless LAN; ARQ; cellular radio networks; UWB communications; call admission control; resource allocation and management; multi-carrier systems; Bluetooth and indoor networks; 3G communications; handoff; multiple antenna systems.

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next generation vehicle network (NGVN): Internet access utilizing dynamic discovery protocols

Next generation vehicle network (NGVN): Internet access util...

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IEEE/ACS International conference on Pervasive Services (ICPS)

作者： R. Baroody A. Rashid N. Al-Holou S. Hariri University of Detroit Mercy USA University of Detroit Mercy

In the near future, vehicles are expected to become a part of the Internet, either as a terminal in a mobile network, as a network node, or as a moving sensor (providing environmental information, cars status, streaming video, etc.) or a combination of the three. This is partly due to the steadily growing interest of vehicles' passengers in location-based information. Drivers and passengers that would want to receive information about traffic jams or accidents in their vicinity will likely be interested in accessing Internet services from within the vehicular network. Access can be gained by using roadside installed Internet gateways (IGs), which are able to communicate with the vehicles. However, several difficulties must be addressed in such a scenario. Examples are the communication efficiency, mobility support, the discovery of Internet gateways, and the handover of connections from one gateway to the next. We are focusing on the aspect of accessing the Internet from within the vehicle network using a service discovery protocol. We therefore developed a dynamic discovery service (DDS) protocol to discover Internet gateways which is suitable for the characteristics of future vehicular ad hoc networks. Besides the benefit of efficient service discovery, our protocol is able to choose the most suitable Internet gateway among others.

关键词： next generation networking IP networks Vehicle dynamics Access protocols Web and internet services Streaming media Telecommunication traffic Road accidents Road vehicles Ad hoc networks

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A decentralized approach to secure management of nodes in distributed sensor networks

A decentralized approach to secure management of nodes in di...

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IEEE Military communications conference (MILCOM 2003)

作者： Zachary, J Univ S Carolina Dept Comp Sci & Engn Columbia SC USA

ISBN: (纸本)0780381408

Distributed sensor networks are a promising technology for surveillance and reconnaissance in many applications, such as next generation C4ISR and the digital battlefield. The dearth of effective security mechanisms are a main obstacle to the acceptance of distributed sensor networks. As research pushes sensor nodes to be smaller and ubiquitous, security issues become paramount. Security in sensor networks needs to be considered during the early phases of development. This paper describes a decentralized solution to the problem of securely checking node membership in ad hoc sensor networks. This method does not require each node to maintain a membership list, does not require communication between the base station and verifying node, and it efficiently handles dynamic membership events (node leaves and joins). It is based on the concept of quasi-commutative hash functions, also called one-way accumulators. The paper analyzes resource requirements and suggests new ways to optimize the use of one-way accumulators while maintaining security in sensor node applications.

关键词： Wireless telecommunication systems

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The next frontier for communications networks: Power management

The next frontier for communications networks: Power managem...

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conference on Performance and Control of next-generation communications networks

作者： Christensen, KJ Univ S Florida Dept Comp Sci & Engn Tampa FL 33620 USA

ISBN: (纸本)0819451274

Performance evaluation is used to gain an understanding of how to make the best use of scarce resources. Storage, memory, processing, and communications bandwidth are all relatively plentiful and inexpensive. What is the next frontier for communications networks and performance evaluation? I will argue that it is power management to achieve cost-effective operation. In the past few years, entirely new network protocols have been developed for battery-hungry sensor networks. But, what about the existing Internet? Estimates place the Internet as consuming from 2% to 8% of the total electricity produced in the USA - much of this power consumption is unnecessary. Do our "always on" desktop computers really need to be fully powered-up all the time? What can be done to achieve power-savings in these computers? The goal is to eliminate unnecessary energy usage by desktop computers in the near future and by networked embedded systems in the longer term. Traffic characterization is the first step towards this goal. Traffic characterization at inter-flow, intra-flow, and protocol levels is being done to investigate power management. The resulting savings achievable from relatively simple power management schemes are measured in TWh per year - or roughly equivalent to the electricity generated by one nuclear power plant. This is cost-effectiveness on a large scale!

关键词： power management traffic characterization Cisco NetFlow

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Semantic agent technologies for tactical sensor networks

Semantic agent technologies for tactical sensor networks

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conference on Unattended Ground sensor Technologies and Applications V

作者： Jiang, GF Chung, W Cybenko, G Dartmouth Coll Inst Secur Technol Studies Hanover NH 03755 USA

ISBN: (纸本)0819449504

Recent advances in wireless communication and microelectronics have enabled the development of low-cost sensor devices leading to interest in large-scale sensor networks for military applications. sensor networks consist of large numbers of networked sensors that can be dynamically deployed and used for tactical situational awareness. One critical challenge is how to dynamically integrate these sensor networks with information fusion processes to support real-time sensing, exploitation and decision-making in a rich tactical environment. In this paper, we describe our work on an extensible prototype to address the challenge. The prototype and its constituent technologies provide a proof-of-concept that demonstrates several fundamental new approaches for implementing next generation battlefield information systems. Many cutting-edge technologies are used to implement this system, including semantic web, web services, peer-to-peer network and content-based routing. This prototype system is able to dynamically integrate various distributed sensors and multi-level information fusion services into new applications and run them across a distributed network to support different mission goals. Agent technology plays a role in two fundamental ways: resources are described, located and tasked using semantic descriptions based on ontologies and semantic services;tracking, fusion and decision-making logic is implemented using agent objects and semantic descriptions as well.

关键词： sensor network information fusion peer-to-peer network DAML semantics dynamic integration web service content-based routing

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