Scalable Transmission Over Heterogeneous Networks: A Stochastic Geometry Analysis

被引：8

作者：

Wu, Liang ^{[1
,2
]}

Zhong, Yi ^{[1
,2
]}

Zhang, Wenyi ^{[1
,2
]}

Haenggi, Martin ^{[3
]}

机构：

[1] Univ Sci & Technol China, Dept Elect Engn & Informat Sci, Hefei 230027, Peoples R China

[2] Chinese Acad Sci, Key Lab Wireless Optic Commun, Hefei 230027, Peoples R China

[3] Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2017年 / 66卷 / 02期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Heterogeneous cellular networks (HCNs); hybrid digital-analog; rate distortion; scalable video coding (SVC); stochastic geometry; DESIGN; TIER;

D O I：

10.1109/TVT.2016.2569088

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper focuses on the transmission of layered source information, such as scalable video coding, over heterogeneous cellular networks. Scalable transmission enables dynamic adaption of source information to the condition of user equipment (UE) devices and, thus, is suitable for cellular networks in which the transmission link quality substantially varies over space and time. Two novel transmission schemes are proposed, namely, layered digital transmission and layered hybrid digital-analog (LHDA) transmission. Leveraging tools from stochastic geometry, a comprehensive analysis is conducted focusing on three key performance metrics: outage probability, high-definition probability, and average distortion. The results show that both proposed transmission schemes can provide a scalable video experience for UE devices. For LHDA transmission, the optimal power allocation between digital and analog transmissions is also analyzed. When the proportion of frequency resource allocated to the femtotier exceeds a certain threshold, LHDA transmission is preferable by enabling continuous quality scalability, thus avoiding the cliff effect.

引用

页码：1845 / 1859

页数：15

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