Reliable file distribution over mobile broadcast systems [Elektronische Ressource] / Thorsten Lohmar

Reliable File Distribution over Mobile BroadcastSystemsVon der Fakultat fur Elektrotechnik und Informationstechnik der¨ ¨Rheinisch-Westfalischen Technischen Hochschule Aachen zur Erlangung¨des akademischen Grades eines Doktors der Ingenieurwissenschaftengenehmigte Dissertationvorgelegt vonDiplom-IngenieurThorsten Lohmaraus Monheim, DeutschlandBerichter: Univ.-Prof. Dr. Petri Mahonen¨ ¨ Dr. Rudolf MatharTag der mundlic¨ hen Prufung:¨ 17. Oktober 2011Diese Dissertation ist auf den Internetseitender Hochschulbibliothek online verfugbar.AbstractThe 3GPP Multimedia Broadcast and Multicast Service (MBMS) provides newbearer services and procedures for efficient transmissions to large user groups.When the group is large, MBMS distributes content by using broadcast on theair-interface. This thesis evaluates the use of MBMS for reliable file distributionservices. One important requirement for file distribution is that the files containno transmission errors.The MBMS file distribution process is subdivided into two phases in thisthesis: During the first phase, the radio access network sends the IP packets ineach cell either using one broadcast channel or several ptp channels dependingon the number of receivers. During the second phase, the file repair service isexecutedwhenneeded.ThefilerepairserviceuseseitherHSPAbearersorMBMSbearers. It is mandatory when minimizing the needed resources for reliable filetransmission.