128 Hits in 9.6 sec

A new approach to channel access scheduling for Ad Hoc networks

Lichun Bao, J. J. Garcia-Luna-Aceves
2001 Proceedings of the 7th annual international conference on Mobile computing and networking - MobiCom '01  
Three types of collision-free channel access protocols for ad hoc networks are presented.  ...  ., a time slot), given the identifiers of its neighbors one and two hops away.  ...  of the channel-access scheduling for each node of an ad hoc network.  ... 
doi:10.1145/381677.381698 dblp:conf/mobicom/BaoG01 fatcat:qxedzhcu2fhc5emnpxem6crxam

A survey on quality-of-service support for mobile ad hoc networks

Dmitri D. Perkins, Herman D. Hughes
2002 Wireless Communications and Mobile Computing  
Next, we describe the first QoS model proposed for mobile ad hoc networks and its relationship to QoS models proposed for the Internet.  ...  Providing a complete QoS solution for the ad hoc networking environment requires the interaction and cooperation of several components.  ...  The DCF is a Carrier Sense Multiple Access with Collision Avoidance protocol based on the MACA protocol described above.  ... 
doi:10.1002/wcm.73 fatcat:r2gde7a2mrehhcvh34uzyyu3du

Exploiting Location Information for Concurrent Transmissions in Multihop Wireless Networks

Seung Min Hur, Shiwen Mao, Y.T. Hou, Kwanghee Nam, J.H. Reed
2009 IEEE Transactions on Vehicular Technology  
In a multihop wireless network environment, it has been shown that IEEE 802.11 media access control (MAC) suffers from a low-throughput problem, which is largely due to the inefficiency in carrier sensing  ...  In this paper, we present a location-assisted MAC protocol that schedules "feasible" concurrent transmissions in a multihop wireless network.  ...  ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their constructive comments.  ... 
doi:10.1109/tvt.2008.924972 fatcat:xi2j3i3imrdhdobgz7qc2oe7e4

Spectrum management in cognitive radio ad hoc networks

Ian Akyildiz, Won-Yeol Lee, Kaushik Chowdhury
2009 IEEE Network  
In this article we focus on the challenges faced in CR ad hoc networks (CRAHNs), which do not have infrastructure support and must rely on local coordination for different CR functionalities.  ...  Specifically in cognitive radio ad hoc networks, distributed multihop architecture, node mobility, and spatio-temporal variance in spectrum availability are some of the key distinguishing factors.  ...  Figure 1 . 1 The overview of CR ad hoc networks: a) network architecture; b) CR cycle. Figure 2 . 2 Spectrum management framework for CRAHNs. Figure 3 . 3 Topology discovery challenge.  ... 
doi:10.1109/mnet.2009.5191140 fatcat:ri3wobo3kbd7fibmzukd33igoi

An Interference-Aware Admission Control Design for Wireless Mesh Networks

Devu Manikantan Shila, Tricha Anjali
2010 EURASIP Journal on Wireless Communications and Networking  
With the increasing popularity of wireless mesh networks (WMNs), the demand for multimedia services encompassing VoIP, multimedia streaming and interactive gaming is increasing rapidly.  ...  While a lot of research has dealt with providing QoS support for real-time services in traditional wired networks, the shared and broadcast nature of the wireless medium necessitates the design of new  ...  Since WMNs share common characteristics with the ad hoc networks, the QoS solutions designed for ad hoc networks can be applied to WMNs.  ... 
doi:10.1155/2010/106520 fatcat:wcedtgny4fg3feygxrogjfx7vm

A Distributed Polling Service-Based Medium Access Control Protocol: Prototyping and Experimental Validation [chapter]

Yingsong Huang, Philip A., Shiwen Mao, Yihan Li
2012 Wireless Ad-Hoc Networks  
Acknowledgements This work is supported in part by the US National Science Foundation (NSF) under Grants ECCS-0802113 and DUE-1044021, and through the NSF Wireless Internet Center for Advanced Technology  ...  Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the foundation.  ...  Figure 9 . 9 Network topology setups for the testbed experiments: ad hoc mode with a non-uniform traffic pattern.We run the experiments using two network topologies as shown in Figs. 8-10: (i) a single-hop  ... 
doi:10.5772/53772 fatcat:v5f6kvod4zgujgezljqcswcgqa

Medium access for a military narrowband wireless ad-hoc network; requirements and initial approaches

Lars Erling Braten, Jan Erik Voldhaug, Knut Ovsthus
2008 MILCOM 2008 - 2008 IEEE Military Communications Conference  
The initial requirements for a tactical military mobile ad-hoc network are discussed and implications on the design of the link layer for a narrowband system have been investigated.  ...  For a slowly varying network topology and relatively long traffic flows, as experienced for combat networks operating at VHF frequencies, D-TDMA seems to be the most promising approach with respect to  ...  Mobile ad-hoc networks (MANETs) consist of a group of wireless terminals that dynamically form a multihop network.  ... 
doi:10.1109/milcom.2008.4753415 fatcat:qsc4f4hqvng7bcmltp3shs4xd4

Bandwidth Estimation for IEEE 802.11-Based Ad Hoc Networks

C. Sarr, C. Chaudet, G. Chelius, I.G. Lassous
2008 IEEE Transactions on Mobile Computing  
Such an evaluation would, however, be a good asset for bandwidth-constrained applications. In multihop ad hoc networks, such evaluation becomes even more difficult.  ...  Index Terms-Wireless communications, IEEE 802.11, ad hoc networks, quality of service, available bandwidth estimation.  ...  However, this solution is adapted to network topologies where all the nodes are within communication range but cannot be directly used in multihop ad hoc networks.  ... 
doi:10.1109/tmc.2008.41 fatcat:m7i2da5jtfa5rpdbc43i6f7bki

Protocols for self-organization of a wireless sensor network

K. Sohrabi, J. Gao, V. Ailawadhi, G.J. Pottie
2000 IEEE personal communications  
The protocols further support slow mobility by a subset of the nodes, energy-efficient routing, and formation of ad hoc subnetworks for carrying out cooperative signal processing functions among a set  ...  We present a suite of algorithms for self-organization of wireless sensor networks in which there is a scalably large number of mainly static nodes with highly constrained energy resources.  ...  Multihop Routing Two multihop routing algorithms have been proposed for MANET: Ad Hoc On Demand Distance Vector (ADOV) routing and Temporally Ordered Routing Algorithm (TORA).  ... 
doi:10.1109/98.878532 fatcat:jlpfoncpwbghnpckbd6hri54bq

A distributed polling service-based MAC protocol testbed

Yingsong Huang, Phillip A. Walsh, Yihan Li, Shiwen Mao
2013 International Journal of Communication Systems  
We discuss various design considerations and challenges of prototyping PSMAC 2, and carry out extensive experimental studies with the GNU Radio/USRP PSMAC testbed.  ...  It is well-known that the high control overhead of IEEE 802.11 MAC is the limiting factor on the throughput and delay performance of wireless networks.  ...  We run the experiments using two network topologies as shown in Fig. 6 : (i) a single-hop ad hoc network topology where each nodes communicates with every other node, as shown in Figs. 6(a) and 6(b),  ... 
doi:10.1002/dac.2584 fatcat:k2m3fmgi2jeorbyaqyrrzs7ew4

Time-Driven Access and Forwarding for Industrial Wireless Multihop Networks

M. Baldi, R. Giacomelli, G. Marchetto
2009 IEEE Transactions on Industrial Informatics  
processed, switched, and queued) at each node is to be added as well.  ...  This paper describes Time-driven Access and Forwarding (TAF), a solution for guaranteeing deterministic delay, at both the access and forwarding level, in wireless multi-hop networks, analyzes its properties  ...  The carrier sense range within which the receiver can sense the transmission. The within which an interfering node i N can interfere with j N .  ... 
doi:10.1109/tii.2009.2017523 fatcat:yg6xtvxf6febfewnufnfsw4yui

A Dynamic Distributed Multi-Channel TDMA Slot Management Protocol for Ad Hoc Networks

Irfan Jabandzic, Spilios Giannoulis, Ruben Mennes, Felipe A. P. De Figueiredo, Maxim Claeys, Ingrid Moerman
2021 IEEE Access  
DDMC-TDMA is a topology-agnostic slot management protocol suitable for large-scale and high-density ad hoc networks.  ...  For deterministic ad hoc networks, Time-Division Multiple Access (TDMA) is a popular medium access scheme, with many distributed TDMA scheduling algorithms being proposed.  ...  For every size of the ad hoc network, network density is increased by varying the number of neighbor nodes from 10 to 30 with a step of 5 and random topology graph models of ad hoc networks are generated  ... 
doi:10.1109/access.2021.3074594 fatcat:h5e74sztcrhbjnpy7xde6bgavi

Class of Service Support Layer for Wireless Mesh Networks

2010 International Journal of Communications, Network and System Sciences  
The proposed protocol is applicable for contention-based MACs and is therefore compatible with most of the Wireless Local Area Network (WLAN) and Wireless Sensor Network (WSN) protocols.  ...  The protocol has a locally centralized control for managing data flows, which either reserve a fixed bandwidth or are weighted by fair scheduling.  ...  The standard defines two topologies, infrastructure and ad-hoc. In the ad-hoc topology, stations communicate directly with each other under the Distributed Coordination Function (DCF).  ... 
doi:10.4236/ijcns.2010.32021 fatcat:x7b7j6ajrrhmjpxhw7aizx72au

Effectiveness of RTS/CTS handshake in IEEE 802.11 based ad hoc networks

Kaixin Xu, Mario Gerla, Sang Bae
2003 Ad hoc networks  
In this paper, we prove using analytic models that in ad hoc networks, such an assumption cannot hold due to the fact that power needed for interrupting a packet reception is much lower than that of delivering  ...  IEEE 802.11 MAC mainly relies on two techniques to combat interference: physical carrier sensing and RTS/CTS handshake (also known as "virtual carrier sensing").  ...  Acknowledgements This work is supported in part by ONR ''MINUTEMAN'' project under contract N00014-01-C-0016 and TRW under a Graduate Student Fellowship.  ... 
doi:10.1016/s1570-8705(03)00015-5 fatcat:tojcomyohbgeflydpcqob7qc34

Real-time communication and coordination in embedded sensor networks

J.A. Stankovic, T.F. Abdelzaher, Chengyang Lu, Lui Sha, J.C. Hou
2003 Proceedings of the IEEE  
Due to all of these differences, many solutions developed for general distributed computing platforms and for ad-hoc networks cannot be applied to sensor networks.  ...  Individual nodes in sensor networks are typically unreliable and the network topology dynamically changes, possibly frequently.  ...  Network Layer 1) Ad-Hoc Routing Protocols: The literature in ad-hoc routing is vast and rich, and we will only summarize existing work most relevant to wireless sensor networks.  ... 
doi:10.1109/jproc.2003.814620 fatcat:qg6sbup6qraatlggzcz4wk3inq
« Previous Showing results 1 — 15 out of 128 results