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arXiv 1802.05348cs.NIcs.MM
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D2D网络中VBR视频流的功率控制和模式选择

Power Control and Mode Selection for VBR Video Streaming in D2D Networks

Chuang Ye, M. Cenk Gursoy, Senem Velipasalar

摘要:

在本文中,我们调查的问题流可变比特率(VBR)视频在设备到设备(D2D)无线网络的功率控制。采用了一种考虑移动用户视频帧大小和播放缓冲区的VBR视频流量模型。考虑具有一对D2D用户(DU)和一个蜂窝用户(CU)的设置,并且采用三种模式,即蜂窝模式、专用模式和重用模式。确定用于数据递送的模式选择,并且以最大化总传输速率为目标来优化基站(BS)和设备发射机的发射功率,同时VBR视频数据可以被递送到CU和DU而不引起播出缓冲器下溢或上溢。提出了一种低复杂度的算法。通过模拟衰落信道上的VBR视频轨迹,我们证明了模式选择和功率控制的视频传输实现了更好的性能,而不仅仅是使用一个单一的模式在整个传输。

英文摘要:

In this paper, we investigate the problem of power control for streaming variable-bit-rate (VBR) videos in a device-to-device (D2D) wireless network. A VBR video traffic model that considers video frame sizes and playout buffers at the mobile users is adopted. A setup with one pair of D2D users (DUs) and one cellular user (CU) is considered and three modes, namely cellular mode, dedicated mode and reuse mode, are employed. Mode selection for the data delivery is determined and the transmit powers of the base station (BS) and device transmitter are optimized with the goal of maximizing the overall transmission rate while VBR video data can be delivered to the CU and DU without causing playout buffer underflows or overflows. A low-complexity algorithm is proposed. Through simulations with VBR video traces over fading channels, we demonstrate that video delivery with mode selection and power control achieves a better performance than just using a single mode throughout the transmission.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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