Fuzzy QoS Based OLSR Network

2013 ◽  
pp. 50-55
Author(s):  
G. Uma Maheswari
Keyword(s):  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Wireless Networks ◽  
Mobile Wireless ◽  
Fuzzy Logic Algorithm ◽  
Link State ◽  
Hoc Networks ◽  
Path Computations ◽  
Optimized Link State Routing

Quality-of-Service (QoS) routing protocol is developed for mobile Ad Hoc Networks. MANET is a self configuring network of mobile devices connected by wireless links. Each device in the MANET is free to move independently in any direction; therefore, it changes links to other devices frequently. The proposed QoS-based routing in the Optimized Link State Routing (OLSR) protocol relates bandwidth and delay using a fuzzy logic algorithm. The path computations are examined and the reason behind the selection of bandwidth and delay metrics is discussed. The performance of the protocol is investigated by simulation. The results in FQOLSR indicate an improvement in mobile wireless networks compared with the existing QOLSR system.

Fuzzy QoS Based OLSR Network

2011 ◽  
Vol 3 (1) ◽  
pp. 50-55
Author(s):  
G. Uma Maheswari
Keyword(s):  
Ad Hoc ◽  
Mobile Wireless Networks ◽  
Mobile Wireless ◽  
Fuzzy Logic Algorithm ◽  
Link State ◽  
Hoc Networks ◽  
Path Computations ◽  
Optimized Link State Routing ◽  
Selection Of

Quality-of-Service (QoS) routing protocol is developed for mobile Ad Hoc Networks. MANET is a self configuring network of mobile devices connected by wireless links. Each device in the MANET is free to move independently in any direction; therefore, it changes links to other devices frequently. The proposed QoS-based routing in the Optimized Link State Routing (OLSR) protocol relates bandwidth and delay using a fuzzy logic algorithm. The path computations are examined and the reason behind the selection of bandwidth and delay metrics is discussed. The performance of the protocol is investigated by simulation. The results in FQOLSR indicate an improvement in mobile wireless networks compared with the existing QOLSR system.

Routing and Coding Enhancements to Improve QoS of Video Transmissions in Future Ad Hoc Networks

2012 ◽  
pp. 244-261
Author(s):  
Juan C. Guerri ◽  
Pau Arce ◽  
Patricia Acelas ◽  
Wilder E. Castellanos ◽  
Francisco Fraile
Keyword(s):  
Ad Hoc Networks ◽  
Wireless Mesh Networks ◽  
Ad Hoc ◽  
Mesh Networks ◽  
Hierarchical Routing ◽  
Link State ◽  
Wireless Mesh ◽  
Hoc Networks ◽  
Optimized Link State Routing

Video services are much demanded nowadays but bandwidth and delay requirements of this kind of services are very restrictive. Offering real-time video services in wireless ad-hoc networks is not an easy task because of the difficulty of guaranteeing certain quality in a shared medium. Practical solutions should try to improve communications at (and gathering information from) several layers of the protocol stack. Mobile Ad-hoc Networks are infrastructure-less wireless networks characterized by being very versatile, dynamic and self-organized but also by the difficulty to achieve a good Quality of Service in video transmissions due to packet losses and node mobility. On the other hand, the Wireless Mesh Network is presented as the next step in wireless networks. Wireless Mesh Networks have a hierarchical topology, clustered structure and static backbone, which all help to improve the network stability. In the way towards Wireless Mesh Networks, hierarchical routing protocols could transform an ad-hoc network in a more robust wireless network. Therefore, in this chapter, hierarchical routing protocols have been studied, particularly Hierarchical Optimized Link State Routing Protocol, and compared with a traditional flat routing protocol named Optimized Link State Routing. Furthermore, additional video coding techniques have been used in order to improve video quality in reception. At application layer, results show that Multi-description Coding achieves better quality on video transmissions when nodes have medium or high mobility, especially when using multipoint-to-point transmission or disjoint paths in a hierarchical structure. Video trace simulations have allowed us to perform subjective quality tests to assert the Quality of Experience improvements in video transmissions.

scholarly journals An Enhanced MPR-Based Solution for Flooding of Broadcast Messages in OLSR Wireless ad hoc Networks

2010 ◽  
Vol 6 (3) ◽  
pp. 249-257 ◽  
Author(s):  
Tzu-Hua Lin ◽  
Han-Chieh Chao ◽  
Isaac Woungang
Keyword(s):  
Wireless Ad Hoc Networks ◽  
Packet Loss ◽  
Ad Hoc ◽  
Promising Technique ◽  
Simulation Experiments ◽  
Mobile Wireless ◽  
Link State ◽  
Performance Metric ◽  
Hoc Networks ◽  
Optimized Link State Routing

In an Optimized Link State Routing (OLSR)-based mobile wireless network, optimizing the flooding of broadcast messages is a challenging task due to node's mobility and bandwidth resource consumption. To complement existing solutions to this problem, the Multi-Point Relays (MPR) selection has recently been advocated as a promising technique that has an additional feature of reducing the number of redundant re-transmission occurring in the network. This paper continuous on the investigation of an existing MPR-based solution, arguing that by considering a cost factor as an additional decision parameter in selecting the MPR nodes, the enhanced MPR selection algorithm leads to less packet loss in the network. Simulation experiments are presented to validate the stated goal, using the average packet loss ratio as the performance metric.

scholarly journals Energy aware proactive optimized link state routing in mobile ad-hoc networks

2011 ◽  
Vol 35 (10) ◽  
pp. 4715-4729 ◽  
Author(s):  
Zhihao Guo ◽  
Shahdi Malakooti ◽  
Shaya Sheikh ◽  
Camelia Al-Najjar ◽  
Matthew Lehman ◽  
...  
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Energy Aware ◽  
Link State ◽  
Mobile Ad Hoc ◽  
Hoc Networks ◽  
Optimized Link State Routing
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