A Simulation Study of File Repair for UMTS MBMS Service

• Main Authors: Lu-Tsung Chang, 張鋁淙
• Other Authors: Phone Lin
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/65627286901744978047

碩士 === 國立臺灣大學 === 資訊工程學研究所 === 94 === 3GPP 23.246 defines the Multimedia Broadcast and Multicast Service (MBMS) standard to efficiently deliver multimedia content over the Universal Mobile Telecommunication System (UMTS). Duration the MBMS content transmission, a UE may receive a corrupted file block (CFB) due to network congestion, etc. Therefore, 3GPP 26.346 proposes three file repair schemes to retransmit the CFBs. However, these schemes introduce extra data traffic or signaling overhead to the UMTS network. To reduce extra data traffic and signaling overhead, this thesis proposes a new file repair scheme Reuse Bearer Service (RBS), and four simulation models are conducted to investigate the performance of three 3GPP file repair schemes and RBS scheme. Our study indicates that in terms of total cost for recovering the CFBs, the RBS scheme always outperforms three 3GPP file repair schemes.