Filters








56,859 Hits in 6.1 sec

On the Optimal Receiver Activation Function for Distance-Based Geographic Transmissions

Murali Rao, Tathagata D. Goswami, Joseph Glover, John M. Shea
2011 SIAM Journal on Applied Mathematics  
However, requiring all of the radios in a network to keep their receivers on to receive geographic transmissions will significantly shorten the network lifetime by depleting the energy of the radios in  ...  In this work, we investigate an optimal strategy for deciding which neighbors of a transmitter should activate to try to recover a transmission.  ...  We derive the optimal measure and map it to the optimal distance-based node-activation function that receivers can use to determine whether to activate to try to receive a transmission.  ... 
doi:10.1137/090756879 fatcat:2kcvwyxz7fdlzhui4oatj2adfe

Maximizing Transport Capacity for Geographic Transmission on Nakagami-m Channels

Tathagata D. Goswami, John M. Shea, Tan F. Wong, Murali Rao, Joseph Glover
2008 IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference  
In this paper, we consider the joint design of node-activation strategies and transmission rates to maximize the expected value of transport capacity over a Nakagami-m channel under a constraint on the  ...  In mobile ad hoc networks (MANETs), conventional packet forwarding schemes that pre-select the next-hop receivers for a packet may fail if the channel coherence time is on the order of the typical packet  ...  We consider the design of a node-activation function to maximize the expected value of transport capacity for geographic transmissions under a constraint on the expected number of receivers that activate  ... 
doi:10.1109/glocom.2008.ecp.822 dblp:conf/globecom/GoswamiSWRG08 fatcat:plgkec26mnbafpv2zgxiw2ykhy

Distance-based node activation for geographic transmissions in fading channels

Tathagata Goswami, John Shea, Murali Rao, Joseph Glover
2010 IEEE Transactions on Communications  
Since there is a tradeoff between the distance of a node from the transmitter and the probability that the node receives the message correctly, we propose to use node-activation based on link-distance  ...  on the expected number of receivers that turn on.  ...  OUTAGE PROBABILITY FOR GEOGRAPHIC TRANSMISSION SCHEMES Outage occurs if no active receiver recovers the message, i.e., V max = 0.  ... 
doi:10.1109/tcomm.2010.05.080695 fatcat:jxc53vbenvagrhezaqdhffj4cm

Scheduling in Mobile Ad Hoc Networks with Topology and Channel-State Uncertainty

L. Ying, S. Shakkottai
2009 IEEE INFOCOM 2009 - The 28th Conference on Computer Communications  
The proposed algorithm is shown to be near-optimal, where the geographic distance over which delayed network-state information is shared determines the provable lower bound on the achievable throughput  ...  Traditional back-pressure algorithms (based on the work by Tassiulas and Ephremides) require instantaneous network state (topology, queues-lengths, and fading channel-state) in order to make scheduling  ...  based on instantaneous geographical and channel information.  ... 
doi:10.1109/infcom.2009.5062161 dblp:conf/infocom/YingS09 fatcat:ksvapg3mirfq5hfrr2wwy4pb7y

Scheduling in Mobile Ad Hoc Networks With Topology and Channel-State Uncertainty

Lei Ying, Sanjay Shakkottai
2012 IEEE Transactions on Automatic Control  
The proposed algorithm is shown to be near-optimal, where the geographic distance over which delayed network-state information is shared determines the provable lower bound on the achievable throughput  ...  Traditional back-pressure algorithms (based on the work by Tassiulas and Ephremides) require instantaneous network state (topology, queues-lengths, and fading channel-state) in order to make scheduling  ...  based on instantaneous geographical and channel information.  ... 
doi:10.1109/tac.2012.2190309 fatcat:bcff2kntlfhgjky3obtk5y5lcq

Optimizing Geographic Routing for Millimeter-wave Wireless Networks with Directional Antenna

L. X. Cai, H. Y. Hwang, X. Shen, J.W. Mark, L. Cai
2009 Proceedings of the 6th International ICST Conference on Broadband Communications, Networks, and Systems  
In this paper, we propose an Optimal Geographic Routing Protocol (OGRP) and an accompanying distributed directional medium access control (MAC) protocol.  ...  The rate-adaptiveness of mmWave link and the use of directional antenna brings both challenges and opportunities for routing protocol design.  ...  . width e, the transmission distance is reduced, so does the optimal hop distance.  ... 
doi:10.4108/icst.broadnets2009.7193 dblp:conf/broadnets/CaiHSMC09 fatcat:5sptnqebvjgshbml5elwvrsuua

New efficient GAF routing protocol using an optimized weighted sum model in WSN

Hanane Aznaoui, Arif Ullah, Said Raghay, Layla Aziz, Mubashir Hayat Khan
2021 Indonesian Journal of Electrical Engineering and Computer Science  
Moreover routing data is based on transmission range for enhancing the energy efficiency during data routing.  ...  In this paper an efficient GAF routing protocol for gathered data is introduced. It proposes an energy-efficient routing in WSN based on the basic version.  ...  Moreover, an effective method is used for routing data diagonally based on the transmission range of active leaders and their distance from the sink.  ... 
doi:10.11591/ijeecs.v22.i1.pp396-406 fatcat:akix7c5bh5e23l7oghqlqwmpbq

Coverage-Extended Cooperative Geographic Routing with Optimal Power Allocation for Wireless Multihop Networks

Syue-Ju Syue, Chin-Liang Wang, Vincent Gauthier, Pei-Shan Tsai
2012 2012 IEEE 75th Vehicular Technology Conference (VTC Spring)  
With the joint optimization of relaying position and power allocation, the maximum cooperative transmission range is derived.  ...  In this paper, we extend the RACR scheme by addressing a power-optimized cooperative geographic routing problem.  ...  In addition, based on the log-distance path loss model as described in Section II-A, the average received SNR can be expressed as a distance-dependent term: γ(d i,j ) = P D σ 2 i,j N 0 = P D N 0 d α i,  ... 
doi:10.1109/vetecs.2012.6240215 dblp:conf/vtc/SyueWGT12 fatcat:pghbqtbxkramdndl5cizgxiv4u

Geographical Forwarding Methods in Vehicular Ad hoc Networks

Kashif Naseer Qureshi, Abdul Hanan Abdullah, Anwar Mirza, Raja Waseem Anwar
2015 International Journal of Electrical and Computer Engineering (IJECE)  
Geographical routing has appeared as one of the most scalable and competent routing schemes for vehicular networks.  ...  A number of strategies have been proposed for forwarding the packets in geographical direction of the destination, where information of direct neighbors is gained through navigational services.  ...  This paper is funded by the GUP Grant (vote Q.J130000.2528.06H00).  ... 
doi:10.11591/ijece.v5i6.pp1407-1416 fatcat:6te26iiyava6tmrfjljmblf6uu

Video Streaming Evaluation of Path Efficient and Geographical Distance based AOMDV (PE-GD-AOMDV) Routing Protocol in MANET

Dr. M. Kokilamani, Dr. E. Karthikeyan
2019 International journal of advanced networking and applications  
PE-GD-AOMDV routing on H.264/MPEG-4 AVC video streaming is evaluated under both Distributed Coordination Function (DCF) and Enhanced Distributed Coordination Function (EDCF).  ...  In this paper, we proposed PE-GD-AOMDV protocol to increase the quality of video and made assessment by using EvalVid with NS2 framework to the quality of video transmission.  ...  based on minimum transmission distance and active path threshold to limit the load on each path.  ... 
doi:10.35444/ijana.2019.100510 fatcat:vktn46zoqbdyfalufahnntviyi

Geographic Routing in WSN for Measuring Coverage Constraints and Energy Consumption in Cloud Environments

2020 VOLUME-8 ISSUE-10, AUGUST 2019, REGULAR ISSUE  
This paper proposes the novel based approach to handle group communication, senor node status, network transmission and optimal encoded behaviors.  ...  We show the simulating results with encoding scheme and reduced energy consumption. The performance can be monitored by coverage constraints and optimal transmission behaviors.  ...  The following scheme applied for energy efficiency and accuracy of successful communications. The distance based source function for calculating coverage problems and geographic routing.  ... 
doi:10.35940/ijitee.c8438.019320 fatcat:iypu272izfcptadr5v5kkbzuoq

Optimal Hops-Based Adaptive Clustering Algorithm

Xin Xuan, Jian Chen, Shanshan Zhen, Yonghong Kuo
2012 Physics Procedia  
And the optimal distance theory is applied to discover the practical optimal routing path to minimize the total energy for transmission.  ...  This paper proposes an optimal hops-based adaptive clustering algorithm (OHACA).  ...  , Optimal distance geographic routing (ODGR) [3] utilizes power control and geographic to explore the optimal path in order to reduce the total transmission energy.  ... 
doi:10.1016/j.phpro.2012.03.237 fatcat:5ovwmykyu5b5rad6xkeqksz6ga

Statistically optimal routing scheme in multihop wireless ad-hoc networks

Yiftach Richter, Itsik Bergel
2014 2014 IEEE 28th Convention of Electrical & Electronics Engineers in Israel (IEEEI)  
The proposed Statistically-Optimal (SO) scheme, works in a decentralized manner in which the next relay selection exploits knowledge on the geographical location of each possible relay and on the instantaneous  ...  Simulations results demonstrate that the SO scheme outperforms previously published schemes, and achieve performance which is close to the upper bound on ALOHA performance.  ...  α α/2 .(16)Note that the SO selection is based only on geographical and local knowledge, i.e., the distance to the next hop, r j , and the received signal powers in the next hop, S j .  ... 
doi:10.1109/eeei.2014.7005890 fatcat:wno3wsrwijdxbltrd63ea27z4u

A greedy minimum energy consumption forwarding protocol for wireless sensor networks

Bighnaraj Panigrahi, Swades De, Jean-Daniel Lan Sun Luk
2009 2009 First International Communication Systems and Networks and Workshops  
per successful packet transmission per unit Euclidean distance progress toward the destination, in a distributed fashion.  ...  In this paper, we propose an efficient greedy forwarding protocol, called minimum energy consumption forwarding, which selects a forwarding node on the basis of minimum transmit and receive energy consumption  ...  Transmit energy consumption for one packet transmission, e t was 0.208 mJ, and receiving energy consumption, e r was 0.121 mJ. The initial energy of each node was taken as 100 mJ.  ... 
doi:10.1109/comsnets.2009.4808838 fatcat:sffroe66t5ddpogn2fizffamcm

Geospatial Information Service Based on Ad Hoc Network

Yun ZHANG, Fuling BIAN
2009 International Journal of Communications, Network and System Sciences  
The author proposes the architecture of mobile geospatial information service based on the Ad Hoc network. On the basis of this architecture, a system is developed, and applied in correlative fields.  ...  This paper focuses on the integration of spatial information and mobile communication technologies.  ...  If the distance is beyond one hop, the mobile terminal will send the control package to seek the gateway, then this mobile terminal will receive from one or more than one reply from the Ad Hoc network  ... 
doi:10.4236/ijcns.2009.22013 fatcat:xrhgc6vxzfcu3ootyvrr56ofky
« Previous Showing results 1 — 15 out of 56,859 results