Abstract
Recently fifth-generation (5G) of cellular networks appeared to enable various smart bandwidth thirsty applications. Frequency re-usability via device-to-device (D2D) communication is one of the possible ways to enhance the 5G network throughput. However, despite these technological advancements in cellular networks, users’ Quality of Experience (QoE) is significantly affected by video quality adaptation according to future network conditions for video streaming. In this paper, we jointly formulate D2D pair association, video quality adaptation, and network resource allocation for scalable video streaming in a D2D communication network. The formulated problem is a mixed-integer linear programming problem and has a combinatorial nature. Thus, the formulated problem is decomposed into two subproblems: D2D pair association subproblem and resource allocation subproblem. The D2D pair association subproblem is a combinatorial optimization problem, to solve it a distributed algorithm is proposed based on two sided-matching theory. On the other hand, resource allocation subproblem is solved using conventional linear optimization techniques to get the boundary solution. Furthermore, a fully distributed quality adaptation scheme is presented using the proposed resource allocation algorithm for layered video. To validate the performance of our proposal, we perform numerical simulations for various scenarios.
Highlights
In the current decade, users’ demand for bandwidth-thirsty applications, such as mobile video streaming has increased many folds and this growth is predicted to continue
We propose a mechanism for the SVC encoded layered video that jointly tackles all these three important factors i.e, the video quality adaptation that takes full advantage of the layer-decouple property of SVC video, the D2D pair association, and the Resource Block (RB) allocation to provide uninterrupted higher quality of videos to the requesting UE
The main difference of the aforementioned works compared to our work is that we are jointly considering the quality adaptation, resource allocation and pair association in D2D networks for scalable video streaming which is not been done to date to the best of our knowledge
Summary
Users’ demand for bandwidth-thirsty applications, such as mobile video streaming has increased many folds and this growth is predicted to continue. [9] has jointly considered resource allocation and quality adaptation for stream loading in the cellular network environment They are unable to completely benefit from the layer-decoupling property of the SVC video by taking the assumption that the user decides how many layers for each segment are to be downloaded in advance according to the predicted throughput in the time slot, and this decision cannot be revisited regardless of whether the transmission is successful or non-successful. We propose a mechanism for the SVC encoded layered video that jointly tackles all these three important factors i.e, the video quality adaptation that takes full advantage of the layer-decouple property of SVC video, the D2D pair association, and the RBs allocation to provide uninterrupted higher quality of videos to the requesting UE
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