Quality of service for video streaming over multi-hop wireless networks: Admission control approach based on analytical capacity estimation

In situations where cellular networks are either unavailable or in outage, a temporary multi-hop wireless network (MWN) can be instantiated and services such as video streaming can be valuable for various purposes. The interference and limitation of bandwidth however challenge the streaming quality in MWNs. To ensure the quality of service (QoS), it is necessary to apply admission control to video streams. The decision of whether to accept a video stream is vital for admission control, and it is crucial to find the appropriate thresholds for admission decisions. In this paper we analyze the video traffic modelling, based on which the thresholds for admission control decisions are found. An admission control protocol is proposed, employing local analytical utilization estimation and a two-round signaling process for admission and route establishments. Our simulations demonstrate that the proposed admission control mechanism can effectively avoid congestion and provide adequate QoS for video streaming over MWNs.