在無線網路中, 資源如何被有效地利用是一項重要的議題，尤其在多媒體傳輸中需要用到較大的頻寬。
因此增加傳輸量、減少資源浪費以及多媒體傳輸排班機制(Scheduling)是本研究中所著重探討的議題。
本論文中使用PR-SCTP(Partial Reliability - Stream Control Transmission Protocol)協議，利用其可結合多介面(Multihoming)的特性達成多路徑(Multi-path)傳輸，
以及部分可靠性(Partial Reliable)的特點達到多媒體中不同框架(Frame)的優先權(Priority)處理。
我們在本論文中提出一個新的架構用於多媒體串流傳輸(Multimedia Streaming Transmission)。
1. 利用無線網路存取點(Access Point)或是無線網路基地台(Base Station)接收並暫存來自傳輸端的資料，
並且立即回送SACK(Selective Acknowledgement)以減少無線網路因接收端處理SACK所造成的傳輸浪費和資源競爭，
之後再依據無線網路狀況及資料優先權來決定傳送、緩送或丟棄。
2. 因為有線端和無線端的網路狀況不盡相同，因此透過無線網路存取點或是無線網路基地台回傳的SACK中所附帶的網路狀況資訊，
可以有效的分別判斷有線端和無線端的網路狀況，而立即採用相對應的傳輸排班機制和調整傳輸影片品質。
透過模擬結果顯示，本論文中所提出的新架構對於多媒體傳輸有顯著的提升與改善。

In a wireless network, wider bandwidth is needed for multimedia transmission, hence it is a critical issue to exploit resource efficiently.
In this paper, we focus on increasing throughput, reducing waste of resource and scheduling mechanism for multimedia transmission.
We use multihoming feature of Stream Control transmission Protocol(SCTP) to achieve Concurrent Multi-path Transfer(CMT)
to distribute data across wireless error-trend feature,
and deal the priority of different level of frames in multimedia with partial reliable feature of PR-SCTP(Partial-Reliability).
In this paper, we propose a novel scheme for multimedia streaming transmission with PR-SCTP.
\newline
1. Access Point(AP) or Base Station(BS) receives and buffers data temporarily from server,
and at the same time, it responses SACK packet to server.
Based on the last mile wireless situation and priority of the packet(or data), AP or BS will send, defer or drop the packet(or data).
This can eliminate redundant packet transmission and collisions in wireless network.
\newline
2. Due to the difference of status of wired and wireless terminals,
these status information can be appended into SACK, sending back from AP or BS.
Therefore, the server can decide the path of transmission and adjust video quality accordingly.

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