Device-to-Device (D2D) Communication as a Bootstrapping System in a Wireless Cellular Network

Abstract

Device-to-Device (D2D) communication is considered to be a promising form of technology to distribute video contents to nearby users and devices at a high data rate and with few delays. In this paper, we propose utilizing the D2D services and cache of mobile devices as a bootstrapping system in a cellular network. The main objective of a bootstrapping-D2D (BD2D) system is to improve the quality of service in terms of achieving the minimum startup-time of popular video files in a cellular network. To achieve our objective, we propose a new caching concept for D2D communication in which each mobile device can cache and share the initial video portion or initial segments of the popular video files to other proximate users via a D2D communication link. We formulate an optimization problem that maximizes the cache-hit ratio of initial segments of the most popular video contents. The basic aim is to move the initial segments as close as possible to the wireless users. We also propose a network-assisted D2D architecture called mobile content delivery network-assisted-BD2D and algorithms that assist the BD2D system in the discovery of devices that have cached the initial segments of the requested video files, in cache placement decisions, and also in the registration of potential D2D devices at the core network. We evaluate the performance of the BD2D system and propose algorithms through extensive simulations under real wireless network conditions, such as interference, fading, and shadowing. Our concluding simulation results demonstrate that bootstrapping the initial segments using the short range BD2D system can significantly reduce the average startup-time of video files in comparison with bootstrapping the initial segments from the traditional cellular system. INDEX TERMS Device-to-Device (D2D), startup-time, wireless cellular networks, mobile content delivery network (MCDN), quality-of-service (QoS), delay, cache-hit.

A Failsoft Scheme for Mobile Live Streaming by Scalable Video Coding

“…Furthermore, we divide all data into chunks of uniform data size based on low quality. Chunk division is an excellent way to utilize the cache capacity, although users need to obtain all the necessary chunks to make the data available [23].…”

Automatic Repair Method for D2D Communication Routing Buffer Overflow Vulnerability in Cellular Network

“…where K refers to the first transmission success rate of cellular network D2D communication. e D2D communication reliability index of the cellular network can be calculated by formula (1) and formula (2). For the calculation of stability index, this article adopts the link failure estimation model, sets up the evaluation node in the cellular network D2D communication, and takes the node as the center to establish the spatial three-dimensional coordinate axis.…”

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Clustering-based device-to-device discovery and content delivery in wireless networks

“…In the literature, studies on D2D cache placement mostly considered optimization-based approaches that disregarded practicality aspects. Optimization problems are formulated and solved in order to maximize coverage [6], of loading [7], hit ratio [9,14,15,16], minimize delay [8,11] and minimize cost [10], under constraints such as cache capacity [15], delay and coverage [16]. An optimal cache placement problem that aims to maximize of loading has been formulated and solved jointly with the D2D link establishment scheme in [17].…”