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Multimedia Tools and Applications

pp 1–28

First Online: 29 October 2016Received: 25 March 2016Revised: 31 August 2016Accepted: 23 September 2016

Abstract

Ability of caching the contents is one of the most important feature of an Information Centric Networking ICN node. By managing the cache space intelligently we can improve network’s performance and increase users’ Quality of Experience QoE. Moreover, scalable video streaming in ICN is envisioned to be very beneficial as well as a challenging issue. In this paper, we are proposing a mechanism for cache management and request forwarding policies for scalable video streaming in ICN. Our proposed cache decision policy ensures to cache the base layer of a scalable video near to the users, which is mandatory layer for decoding any SVC encoded video and is needed by all the users with any data-rate budget, and consequently cache the higher layers in the upper nodes in the CCN-ICN within a specific RTT range. Furthermore, our intelligent cache decision cover fairness by considering router’s cache capacity inside the RTT range and at the same time giving more priority to the nodes that are nearer to the users. A limited cooperative request forwarding mechanism, which is the part of our proposal, plays a role to improve users’ QoE by providing the popular requested contents quickly. We have intensively simulated our proposed cache management and request forwarding scheme. The simulation results show that our proposed solution outperforms the current cache management schemes and improve the cache utilization. Also our proposed scheme decrease the traffic flowing inside the network by eliminating the request flooding and providing the requested contents from the nearby location to the users. The proposed scheme provides video faster to the users, specially the mandatory base layer is provided very quickly to the users.

KeywordsInformation centric networking ICN Scalable video streaming Cooperative caching in CCN Request forwarding  Download fulltext PDF



Autor: Saeed Ullah - Kyi Thar - Choong Seon Hong

Fuente: https://link.springer.com/







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