AbstractsEngineering

Location Based Pre-caching and Network Coding in Smart Content Distribution

by Bo Zhang




Institution: KTH Royal Institute of Technology
Department:
Year: 2013
Keywords: Engineering and Technology; Electrical Engineering, Electronic Engineering, Information Engineering; Teknik och teknologier; Elektroteknik och elektronik; Engineering and Technology; Electrical Engineering, Electronic Engineering, Information Engineering; Telecommunications; Teknik och teknologier; Elektroteknik och elektronik; Telekommunikation; Teknologie masterexamen - Trådlösa system; Master of Science - Wireless Systems; Telekommunikationssystem; Telecommunication Systems
Record ID: 1336320
Full text PDF: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123174


Abstract

Since the boom of the smart phones, there is a huge amount of applicationsthat deal with data located in the cloud. This fact can makethese applications unavailable when the network is inaccessible due tocoverage or congestion. A solution to these problems have been designedand developed for the Android OS in this master thesis. The approachis the application of location-based pre-caching, downloading the contentof an application before the user enters in the zone where the applicationmay use this content. Network coding has also been introduced in orderto reduce the amount of data sent over the wireless networks. A cachingscheme is introduced in binary network coding and applied to the problemof retransmission in wireless broadcast network. A binary network codingalgorithm is designed which could asymptotically approach the efficiency of linear network coding with a much lower decoding complexity.