A Study on UMTS Multimedia Broadcasting Multicasting Service
Date Issued
2008
Date
2008
Author(s)
Lai, Yen-Cheng
Abstract
The multicasting technique (one-source-many-destination) is widely utilized for multimedia content delivery in the Internet. In the recent years, mobile telecommunication networks have been integrated with the Internet. The Third Generation Partnership Project (3GPP) working group proposed the Multimedia Broadcast Multicast Service (MBMS) for multicasting multimedia content over the Universal Mobile Telecommunications System (UMTS). The standards for the UMTS MBMS service are currently under process. It is allowed rooms to enhance the current mechanisms proposed in the UMTS MBMS specifications so that better QoS and performance for the MBMS service can be achieved in the UMTS network. This dissertation focuses on proposing more intelligent mechanisms to make the MBMS service deployed more efficiently in UMTS. We consider the following two important issues for performance enhancement for the UMTS MBMS service.adio Resource Management. 3GPP 23.246 defines the MBMS to deliver multicasting content over the Universal Mobile Telecommunications System (UMTS), where the common logical channel may be enabled to serve multiple MBMS users at the same time. However, the usage of the common logical channel may cause interference to the dedicated logical channels serving the traditional calls. To more efficiently utilize the radio resource to serve both traditional and MBMS calls, this dissertation proposes two channel allocation algorithms: Reserved Resource for Multicasting (RRM) and Unreserved Resource for Multicasting (URM). We develop analytic and simulation models to investigate the performance for the two algorithms, including the call incompletion probability and customers'' satisfaction indication. Our study indicates that URM outperforms RRM in terms of the call incompletion probability for the traditional calls and satisfaction indication by slightly degrading the performance of MBMS calls.ile Repair Mechanism. During the MBMS content transmission, the data may be lost. Three file repair schemes were proposed in 3GPP 26.346 to retransmit the corrupted MBMS data. However, these schemes may introduce extra data traffic or signaling overheads. This dissertation proposes the Reuse Bearer Service (RBS) file repair scheme to resolve this issue. We analyze the four file repair schemes by analytical models and simulation experiments. Our study shows that the proposed RBS scheme may significantly outperform the previously proposed schemes.
Subjects
Channel Allocation
File Repair
Multimedia Broadcast Multicast Service (MBMS)
Universal Mobile Telecommunication System (UMTS)
Type
thesis
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