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  • 學位論文

行動網路中使用分層式編碼的多媒體廣播及群播頻道分配機制

Layer-Encoded MBMS Channel Allocation for Mobile Networks

指導教授 : 逄愛君

摘要


由UMTS 所提出的多媒體廣播及群播服務架夠支援將單一多媒體串流傳送給一群行動網路的使用者。由於行動網路終端裝置的能力有趨於多樣化的趨勢,同時也為了滿足使用者的不同喜號,多媒體廣播及群播服務必需要能夠提供多個不同等及的服務水準給他的使用者。透過將分層式編碼與多媒體廣播及群播服務結合便可以達到這個目的。透過分層式編碼,我們可以將許多層的多媒體資料進行編碼並且適當的傳送給不同的使用者。本論文研究了將分層式編碼與多媒體廣播及群播服務的結合的議題。其中我們提出了在此架構中使用的新的頻道分配機制,並且在此機制上發展出許多不同的頻道分配策略。除此之外我們還藉由數學分析以及模擬來評估了此機制的效能。

並列摘要


The multimedia broadcast/multicast service (MBMS) originally proposed by UMTS supports the delivery of multimedia streams to a group of mobile subscribers. With the heterogeneity of device capability and the variety of subscriber preference, an MBMS source has to provide multiple levels of service quality to its group members. One of the possible ways to achieve this is to incorporate the layer-encoding (i.e., scalable-coding) technique into MBMS. With scalable coding, multiple layers of multimedia data can be encoded, and be properly distributed to various kinds of recipients. This thesis investigates the distribution of layer-encoded multimedia data for MBMS. Specifically, we propose a new channel allocation scheme for layer-encoded MBMS, and develop several allocation policies based on the proposed scheme. The performance of our scheme is evaluated through our developed analytical and simulation models.

參考文獻


Group;Introduction of the Multimedia Broadcast/Multicast Service (MBMS)
in the Radio Access Network (RAN); Stage 2. Technical Specification 3G TS
Group;Multimedia Broadcast/Multicast Service (MBMS); Architecture and
Group;Multimedia Broadcast/Multicast Service (MBMS); Stage 1. Technical
[11] A.-C. Pang and S.-M. Wang. “QoS multicasting over mobile networks”. IEEE

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