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- W2024137869 abstract "The small-cell wireless network (SCN) paradigm is based on the deployment of low-power small cells close to the user so that spatial re-use is increased. Small cell base stations (SCBSs) can be connected either with a wired or a wireless backhaul link to the core network. However, since these SCBSs are expected to be deployed in significant numbers 1, the increased density creates not only new problems but also optimization opportunities. In this paper we work towards the full exploitation of the broadcast advantage that dense SCNs offer in order to improve the video quality of unicast streaming applications.To accomplish our goal we design a protocol that exploits the broadcast channel in the neighborhood of each small cell by using the SCBSs opportunistically as a relay stations. Each SCBS can overhear packet transmissions both from the macro BS (MBS) and also from other SCBSs in its neighborhood. Furthermore, since a packet may be available at multiple SCBSs, we propose an algorithm for optimized relay selection that takes into account the content of each specific video packet. This algorithm selects jointly the optimal small cell relay and video packet for forwarding. Both the overhearing protocol and the relay selection algorithm use only passively collected information and require no explicit message passing. The evaluation of the two proposed sub-systems shows significant performance improvements under different key system configurations for the video content, the number of neighboring SCBS, and the type of the backhaul connection. HighlightsWe develop a protocol for using overheard video packets in wireless relay networks.We develop a wireless relay selection scheme that uses the content of the video packet and not just the channel quality.Overhearing is enough for improving wireless unicast video quality when compared to network coding.Video-aware relay selection outperforms classic channel-quality based relay selection." @default.
- W2024137869 created "2016-06-24" @default.
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- W2024137869 date "2015-02-01" @default.
- W2024137869 modified "2023-10-04" @default.
- W2024137869 title "A cooperative protocol for video streaming in dense small cell wireless relay networks" @default.
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- W2024137869 doi "https://doi.org/10.1016/j.image.2014.12.005" @default.
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