2005-11-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/698287摘要：隨著多媒體技術、寬頻技術、以及半導體製程技術的進步，IP-based 多媒體無線傳輸通訊的時 代已經來臨。近來更因為WiFi (802.11a/b/g/n)以及WiMAX（802.16/16e）的崛起，都會區隨處可無 線上網的願景指日可待。待都會區WiMAX 佈建完成之後，不僅是Voice-over-IP (VoIP)，其延伸的 Multimedia-over-IP (MoIP)服務預期將會是現有有線及行動電話業者的一大勁敵。因此，如何在異質 網路(Heterogeneous Networks)間持續提供良好的服務品質（Quality-of-Service，QoS），將是未來極 具挑戰的議題。 本計畫團隊針對此議題，並配合晶片系統國家型科技計畫的第二期規劃主軸—創造優質生活之 兆級多元化整合技術，提出前瞻性適用於異質網路之多媒體即時影音對講服務之規格制定計劃，預 計結合軟體智財、硬體智財、以及系統設計驗證等團隊，共同研發命名為NTU Skype (N-Skype)的系 統晶片。此命名除了取Skype高品質的VoIP含意之外，我們將延伸至高品質的即時影音對講服務， 針<br> Abstract: With the rapid advances in multimedia entertainment, broadband network, and semiconductor manufacturing technologies, high-speed all-IP multimedia wireless communication is coming of age. The WiFi (802.11a/b/g/n) and WiMAX (802.16/16e) technologies are becoming sophisticated and affordable. People are expected to have ubiquitous wireless Internet access in the urban areas in the foreseeable future. Leveraging the already rising voice over IP (VoIP) services, multimedia over IP (MoIP) is anticipated to be the killer application to thrive in the future. Despite the positive prospective of MoIP, the key to the successful deployment of MoIP services lies in the quality of services (QoS) and the foremost technical challenge is at the scalability of the MoIP communication system, with which it is possible to satisfy the user demand while the user population continues to grow. Combining expertise in communication software development, hardware IP development, and system design verification, we propose an innovative high-performance handheld system for MoIP applications. The system is referred to as the “NTU Skype (N-Skype)”. We will first define the specification of the MoIP handheld system, and then develop the required hardware IPs and network software. We will also integrate the hardware and software modules and realize the system in an FPGA-based prototyping platform. The key technologies to develop in this project include: (1) QoS optimization across application, network, and data link layers, (2) joint-source-channel coding Silicon IP, (3) Adaptive coding and data transmission over alternative path via overlay network, and (4) electronics system level hardware-software co-design and co-verification. We believe that our experience in MoIP handheld system specification and hardware/software IP development will be valuable to the multimedia wireless communication industry and will impact profoundly the MoIP market in the future.多媒體無線傳輸通訊跨層最佳化整合資料編碼及通道編碼疊加層網路電子系統層級Multimedia wireless communicationCross-layer optimizationJoint-source-channel codingOverlay networkElectronics System Level design and verification