scholarly journals A Reliable and Efficient Highway Multihop Vehicular Broadcast Model

2012 ◽  
Vol 2012 ◽  
pp. 1-8
Author(s):  
Deng Chuan ◽  
Wang Jian
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Arrival Rate ◽  
Mobility Prediction ◽  
Average Delay ◽  
Channel Conflict ◽  
Maximum Gain ◽  
Proposed Model ◽  
Packet Arrival ◽  
Packet Arrival Rate

A reliable and efficient highway broadcast model based on gain prediction is proposed to solve excessive information retransmission and channel conflict that often happen to flooding broadcast in vehicular ad hoc network. We take accountofthe relative speeds, the intervehicle distance, and the coverage difference of the neighboring vehicles into predicting the gain of every neighbor, and further select the neighbor with the maximum gain as the next hop on the every direction of road. Simulations show that the proposed model is clearly superior to the original flooding model and a recent variant based on mobility prediction in packet arrival rate, average delay, forwarding count, and throughput.

Performance Analysis Based on Packet Arrival Rate for the IEEE 802.11 DCF

2008 ◽  
Vol 19 (10) ◽  
pp. 2762-2769 ◽  
Author(s):  
Wei-Dong YANG ◽  
Jian-Feng MA ◽  
Ya-Hui LI
Keyword(s):  
Performance Analysis ◽  
Ieee 802.11 ◽  
Arrival Rate ◽  
Ieee 802.11 Dcf ◽  
802.11 Dcf ◽  
Packet Arrival ◽  
Packet Arrival Rate

A Study on the Performance of IPv6-Based Mobility Protocols

2009 ◽  
pp. 2982-2995
Author(s):  
Ki-Sik Kong ◽  
Sung-Ju Roh ◽  
Chong-Sun Hwang
Keyword(s):  
Residence Time ◽  
Arrival Rate ◽  
Mobile Ipv6 ◽  
Performance Comparison ◽  
Average Speed ◽  
Signaling Cost ◽  
Packet Arrival ◽  
Mobility Protocols ◽  
Average Domain ◽  
Packet Arrival Rate

The performance of IP mobility protocols is highly dependent on the change of mobile nodes’ (MNs’) mobility and traffic-related characteristics. Therefore, it is essential to investigate the effects of these characteristics and to conduct an in-depth performance study of these protocols. In this paper, we introduce a novel analytical approach using a continuous-time Markov chain model and hierarchical network model for the performance analysis of IPv6 mobility protocols: Mobile IPv6 (MIPv6) and Hierarchical Mobile IPv6 (HMIPv6). According to these analytical models, we derive the location update costs (i.e., binding update costs plus binding renewal costs), packet tunneling costs, and total signaling costs, which are generated by an MN during its average domain residence time, when MIPv6 or HMIPv6 is deployed under the same network architecture, respectively. In addition, based on these derived costs, we investigate the effects of various parameters, such as the average speed of an MN, binding lifetime period, the ratio of the network scale, and packet arrival rate, on the signaling costs generated by an MN under MIPv6 and HMIPv6. Moreover, we conduct the performance comparison between these two protocols by showing the relative total signaling costs under the various conditions. The analytical results show that as the average speed of an MN gets higher and the binding lifetime period is set to the larger value or as its packet arrival rate gets lower, the total signaling cost generated by an MN during its average domain residence time under HMIPv6 will get relatively lower than that under MIPv6, and that under the reverse conditions, the total signaling cost under MIPv6 will get relatively lower than that under HMIPv6.

scholarly journals Adaptive Resource Observation for Congestion Alleviation using Constrained Application Protocol

2018 ◽  
Vol 7 (4.38) ◽  
pp. 885
Author(s):  
Jung-Hyok Kwon ◽  
Sol-Bee Lee ◽  
Jaehoon Park ◽  
Kyu-Sung Hwang ◽  
Yongseok Lim ◽  
...  
Keyword(s):  
Network Performance ◽  
Arrival Rate ◽  
Buffer Overflow ◽  
Service Rate ◽  
Packet Arrival ◽  
Simulation Results ◽  
Constrained Application Protocol ◽  
Adaptive Resource ◽  
Packet Arrival Rate

This paper presents an adaptive resource observation (ARO) for congestion alleviation using constrained application protocol (CoAP), which prevents buffer overflow of the client by adjusting observing period of the associated servers. The operation of ARO consists of two main phases; 1) buffer overflow estimation, 2) observing period adaptation. In the former, the client estimates whether buffer overflow will occur by comparing its service rate with packet arrival rate, then it determines the new observing period that can prevent buffer overflow of the client. The latter is used to adjust the observing period of servers considering the predefined the minimum and maximum queue threshold. ARO can significantly reduce the number of dropped packets caused by buffer overflow. The simulation results show that ARO achieves a higher network performance than legacy CoAP. 

An Adaptable Secure Scheme in Mobile Ad hoc Network to Protect the Communication Channel From Malicious Behaviours

2021 ◽  
Vol 16 (3) ◽  
pp. 54-73
Author(s):  
Srilakshmi R. ◽  
Jaya Bhaskar M.
Keyword(s):  
Ad Hoc Network ◽  
Communication Channel ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Multipath Routing ◽  
Routing Overhead ◽  
Digital World ◽  
Proposed Model ◽  
Mobile Ad Hoc ◽  
Packet Drop

Mobile ad-hoc network (MANET) is a trending field in the smart digital world; it is effectively utilized for communication sharing purposes. Besides this communication, it has numerous advances like a personal computer. However, the packet drop and low throughput ratio became serious issues. Several algorithms are implemented to increase the throughput ratio by developing multipath routing. But in some cases, the multipath routing ends in routing overhead and takes more time to transfer the data because of data load in the same path. To end this problem, this research aimed to develop a novel temporary ordered route energy migration (TOREM). Here, the migration approach balanced the data load equally and enhanced the communication channel; also, the reference node creation strategy reduced the routing overhead and packet drop ratio. Finally, the outcome of the proposed model is validated with recent existing works and earned better results by minimizing packet drop and maximizing throughput ratio.

scholarly journals A Process Of Creating A Systematic Qos Routing Technique Utilizing Manet

2021 ◽  
Vol 23 (05) ◽  
pp. 670-678
Author(s):  
R Anitha ◽  
◽  
B R Tapas Bapu ◽  
S Sundararajan ◽  
M Vengadapathiraj ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Self Organization ◽  
Mobile Nodes ◽  
Proposed Model ◽  
Ga Algorithm ◽  
Mobile Ad Hoc

MANET is a mobile ad-hoc network that is made of several mobile nodes that can communicate in a multi-way without any fixed or regular infrastructure. Due to its special features such as its self-organization, easy deployment it has been preferred for many military and civil applications. MANET has also gained popularity in the multimedia field. MANET has certain levels of requirements such as QoS (Quality of Service), jitter and energy, bandwidth, and end-2-end delay. MANET’s one of the basic requirements is having QoS and should have efficient routing to support other applications. In this research paper, a special Genetic Algorithm known as the GA algorithm based on routing on a Mobile Ad-hoc network is designed and termed as GAMAN. The proposed model uses a 2 QoS system for routing. The outcome of this paper showed that the GAMAN method is a significant one for QoS in MANET.

scholarly journals The Impact of IEEE 802.11 Contention Window on The Performance of Transmission Control Protocol in Mobile Ad-Hoc Network

2020 ◽  
Vol 9 (3) ◽  
pp. 29-48
Author(s):  
Iqtidar Ali ◽  
Tariq Hussain ◽  
Kamran Khan ◽  
Arshad Iqbal ◽  
Fatima Perviz
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Transmission Control Protocol ◽  
Contention Window ◽  
Average Delay ◽  
Mobile Ad Hoc ◽  
Wireless Interface ◽  
Hoc Networks ◽  
The Impact

A Mobile Ad-hoc Network (MANET) is a group of nodes connected via ad-hoc fashion for communicating with each other through wireless interface. The communication among the nodes in such network take place by using multi-hop in the absence of fixed infrastructure. TCP faces some hurdles and complexities in multi-hop ad-hoc networks particularly congestion and route failures. The incompatibility between the MAC and TCP are previously noticed by the research community. This research study focuses on the impact of MAC layer contention window on TCP in MANET by using variation in network density and velocity of nodes respectively. Simulation has been carried out to quantify and analyze the impact of Contention Window (CW) sizes that affects the performance of TCP by using NS-2 simulator. The impact of CW is investigated on TCP in multi-hop networks by means of performance evaluation parameters i.e. average delay, average packet drops and average throughput.

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