Abstract
MANETs (Mobile Ad-hoc Networks) is the self organizing wireless structure of mobile hosts. Wireless media is used for communication in MANETs. Considering the developing requirements for multimedia and real-time traffic applications in real world, QoS (Quality-of-Service) support is essential in MANETs. But most of the characteristics of MANETs make QoS support a difficult problem. It is challenging to support QoS routing in MANET due to dynamic behavior and mobility of the hosts. The OLSR (Optimized Link State Routing) protocol can be efficiently used in MANETs to provide QoS routing because of its dynamic MPR (Multi Point Relay) selection criteria and proactive nature. In this paper, a design of QoS routing framework integrated with OLSR protocol is proposed and also analyzed using network simulator. Proposed QoS framework combines a bandwidth estimation algorithm with explicit resource reservation, QoS routing and connection admission control (CAC). OLSR protocol is extended for QoS framework to solve performance issues related to node mobility using cross layer approach. Results after simulation conclude about efficiency of the proposed QoS routing framework.
Highlights
A Mobile Ad-hoc Network (MANET) is an infrastructureless, multiple hop wireless networks with mobile hosts
Once QoS route is formed by OLSR protocol; resource reservation and connection admission control modules will remain in act until MPR selection reaches to destination host
The difficulties confronted in QoS frameworks in MANETs are discussed and a proficient design and analysis of novel QoS framework of different QoS routing parameters is presented in this paper
Summary
A Mobile Ad-hoc Network (MANET) is an infrastructureless, multiple hop wireless networks with mobile hosts. A MANET is self organizing and self configuring wireless network In this network, connectivity among hosts or sometimes to other network is provided with the help of hosts themselves. Attending QoS support such as available bandwidth, end-to-end delay, probability of loss, rate of error and cost of links are extensively addressed in the perceptive of internet applications [2,3, 7,8,9]. Link State Routing (LSR) looks more promising for QoS routing support in MANETs as comprehensive information of connections is obtainable by all participating hosts. Along with regular routing information OLSR can be used to store additional QoS routing information like bandwidth and delay to select QoS supported path formation. When a design for QoS solution is thought of for MANETs to pursue bandwidth, delay, throughput, resource reservation, connection admission control should not be negotiated. It is emphasized to formally design and analyze QoS requirement using welldefined framework
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