An efficient QOLSR extension protocol for QoS in ad hoc networks

Quality of service (QoS) support in mobile ad hoc networks (MANETs) is a challenging task. We have developed the QOLSR protocol, a QoS routing over OLSR (optimized link state routing) protocol introducing more appropriate metrics than the hop distance, such as bandwidth and delay. The paper discusses a proposed extension to the QOLSR protocol to provide integrated services, i.e., to support real-time as well as the current non-real-time service of IP. This extension is necessary to meet the growing need for real-time service for a variety of new applications, including teleconferencing, remote seminars. telescience, and distributed simulation. We include the various QoS parameters in the IPv6 flow label. The performance of our extension is extensively investigated by simulation. Our results indicate that the gain attained by our proposal represents an important improvement in such mobile wireless networks.