Muhammad Iqbal Cholilur Rochman, Yeni Anistyasari
Multicast transmission is a recurrent problem in wireless networking as the system has to cater to multiple numbers of users at the same time. Furthermore, video payload adds more complexity to the problem, i.e., video needs to be delivered in a timely and orderly manner. Using H.264/SVC standard for scalable video, scaling could be used to compromise the quality and the size of the video, yet it poses a complex dependency problem. We propose a multicast scheme named CONMIQ (Constrained Non-linear Model of Incremental Quality) that provides suboptimal video quality to all users and still fulfill resource requirement. The solution will be applied to LTE-A(Long-Term Evolution-Advanced) network, which provides robust user channel quality assessment and a better OFDMA channel. To find the maximum video quality, we model the video quality of each video block in a GOP (Group of Pictures) as a second-degree polynomial function, then solve the maximization problem on that function, along with the considerations of resource constraints, video block dependency, and the varying channel condition of subscribed users. The experimental results verify that our suboptimal solution outperforms naive approaches while still performing comparably well than the much slower optimal solution. © 2021 IEEE.
National Taiwan University of Science and Technology, Dept. of Computer Science and Information Engineering, Taipei, Taiwan; Universitas Negeri Surabaya, Dept. of Informatics, Surabaya, Indonesia
