QoE-aware routing for video streaming over ad-hoc networks

The major challenge in ad-hoc network is multi-hop paradigm. Moreover, multimedia streaming over ad-hoc networks increasingly emerges since it can be useful in various practical cases. In video streaming, previous studies provided quality of service (QoS)-based methods that focused on the value of technical parameters such as bandwidth, jitter, delay, etc. It is however not perfectly correlated to users´ experience. In this paper, we propose a routing mechanism based on optimized link state routing (OLSR) to guarantee a good quality of experience (QoE) of users. The pseudo-subjective quality assessment (PSQA) is adopted to estimate mean opinion scores (MOS), then this MOS value will be exploited by the source for selecting the appropriate path. In addition, an event-triggered based on the MOS value is exploited to provide more relevant information. The results show that the proposed scheme outperforms other OLSR-based routing protocols particularly in heavy load and moderate mobility scenario.