scholarly journals Adaptive Probabilistic Broadcasting over Dense Wireless Ad Hoc Networks

2010 ◽  
Vol 2010 ◽  
pp. 1-12 ◽  
Author(s):  
Victor Gau ◽  
Jenq-Neng Hwang

We propose an idle probability-based broadcasting method,iPro, which employs an adaptive probabilistic mechanism to improve performance of data broadcasting over dense wireless ad hoc networks. In multisource one-hop broadcast scenarios, the modeling and simulation results of the proposediProare shown to significantly outperform the standard IEEE 802.11 under saturated condition. Moreover, the results also show that without estimating the number of competing nodes and changing the contention window size, the performance of the proposediProcan still approach the theoretical bound. We further applyiProto multihop broadcasting scenarios, and the experiment results show that within the same elapsed time after the broadcasting, the proposediProhas significantly higher Packet-Delivery Ratios (PDR) than traditional methods.

2006 ◽  
Vol 29 (18) ◽  
pp. 3789-3803 ◽  
Author(s):  
Hassan Artail ◽  
Haidar Safa ◽  
Joe Naoum-Sawaya ◽  
Bissan Ghaddar ◽  
Sami Khawam

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6743
Author(s):  
Fan Zhang ◽  
Gangqiang Yang

High-speed mobility and heavy-load traffic in mobile Ad hoc networks (MANET) may result in frequent topology changes and packet loss. To guarantee packet delivery, a novel stable backup routing (SBR) scheme is put forward in this paper, which consists of the establishment of backup routes and route maintenance. In SBR, backup routes are set up by overhearing MAC signals, and the bit error rate is considered in path selection for improving stability. To repair broken links effectively and reasonably, qualified backup routes are classified into three categories with different priorities, based on which the relevant nodes decide how to reconstruct the forwarding path. Extensive simulations demonstrate that our proposed method outperforms other comparable backup routing mechanisms in terms of packet delivery ratio, average delay and control overhead.


2010 ◽  
Vol 9 (2) ◽  
pp. 662-673 ◽  
Author(s):  
Alfred Asterjadhi ◽  
Elena Fasolo ◽  
Michele Rossi ◽  
Joerg Widmer ◽  
Michele Zorzi

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Noor Mast ◽  
Muhammad Altaf Khan ◽  
M. Irfan Uddin ◽  
Syed Atif Ali Shah ◽  
Atif Khan ◽  
...  

With the development of wireless technology, two basic wireless network models that are commonly used, known as infrastructure and wireless ad hoc networks (WANETs), have been developed. In the literature, it has been observed that channel contention is one of the main reasons for packet drop in WANETs. To handle this problem, this paper presents a routing protocol named CCBR (Channel Contention Based Routing). CCBR tries to determine a least contended path between the endpoints to increase packet delivery ratio and to reduce packet delay and normalized routing overhead. Moreover, throughout the active data section, each intermediate node computes its channel contention value. If an intermediate node detects an increase in channel contention, it notifies the source node. Then the source node determines another least contended route for transmission. The advantages of CCBR are verified in our NS2-based performance study, and the results show that CCBR outperforms ad hoc on-demand distance vector (AODV) in terms of packet delivery ratio, end-to-end delay, and routing overhead by 4% to 9%.


2007 ◽  
Vol 2007 ◽  
pp. 1-9 ◽  
Author(s):  
Hong-Chuan Yang ◽  
Kui Wu ◽  
Wu-Sheng Lu

We study the energy-efficient configuration of multihop paths with automatic repeat request (ARQ) mechanism in wireless ad hoc networks. We adopt a cross-layer design approach and take both the quality of each radio hop and the battery capacity of each transmitting node into consideration. Under certain constraints on the maximum tolerable transmission delay and the required packet delivery ratio, we solve optimization problems to jointly schedule the transmitting power of each transmitting node and the retransmission limit over each hop. Numerical results demonstrate that the path configuration methods can either significantly reduce the average energy consumption per packet delivery or considerably extend the average lifetime of the multihop route.


Author(s):  
Lakshmi Narasimhan Kannan ◽  
Kumaran Vijayasankar ◽  
Divya ChanneGowda ◽  
Niraj Agarwal ◽  
Marco Tacca ◽  
...  

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