ad hoc networks are multi-hop wireless networks without a pre-installed infrastructure. such networks are widely used in military applications and in emergency situations as they permit the establishment of a communication network at very short notice with a very low cost. video is very sensitive for packet loss and wireless ad-hoc networks are error prone due to node mobility and weak links. h...

Ad hoc networks are multi-hop wireless networks without a pre-installed infrastructure. Such networks are widely used in military applications and in emergency situations as they permit the establishment of a communication network at very short notice with a very low cost. Video is very sensitive for packet loss and wireless ad-hoc networks are error prone due to node mobility and weak links. H...

Video playback in mobile devices is becoming increasingly popular. Since mobile devices are typically resource constrained, various video personalization strategies are used to provide personalized video content that is most relevant to the client’s request. In this paper, we propose a novel video personalization server and cache architecture, which uses automatic video segmentation and video i...

Cache of a persistent data structure represents an important part, which significantly influence its efficiency. Cache consists from an array of main memory blocks (caled cache nodes) with a constant size. Cache nodes buffer the data structure nodes hence they can be accessed quickly. However, data structure nodes do not usually fully utilize the whole main memory block. Therefore, the constant...

The batch is an important technique for delivering video over Internet or VoD. It is a key method to improve effect for video multicast. In this paper, we research the batch strategy of proxy cache for streaming media using dynamic cache, proposed the three kind of cache algorithm for proxy cache: window batch, size batch, efficient batch. These methods increased the length of batch, solved the...

This paper presents a seamless video service using web-cached multicast in WLAN. This system is composed of switching/multicast agent(SMA) and some access points(AP) with cache memory in wireless network. The proposed web-cached multicast technique for live-video can reduce the service delay, shortage of deficient network resources and the load of video server. Also, this system uses identifica...

The cache replacement algorithm plays an important role in the overall performance of Proxy-Server system. In this paper we have proposed VoD cache memory replacement algorithm for a multimedia server system. We propose a Rank based cache replacement policy to manage the cache space in individual proxy server cache. Proposed replacement strategy incorporates in a simple way the most important c...

We introduce a novel cache replacement policy to improve the entire network performance of video delivery over content-centric networking (CCN). In the case of the CCN structure, we argue that: 1) for video multiplexing scenario, general cache strategies that ignore the intrinsic linear time characteristic of video requests are unable to make better use of the cache resources, and 2) it is inad...

Pushing popular content to cheap “helper” nodes (e.g., small cells) during off-peak hours has recently been proposed to cope with the increase in mobile data traffic. User requests can be served locally from these helper nodes, if the requested content is available in at least one of the nearby helpers. Nevertheless, the collective storage of a few nearby helper nodes does not usually suffice t...