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Description: IEEE 802.11h-2003 IEEE Standard for Information technology—Telecommunications and Information Exchange Between Systems—LAN/MAN Specific Requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Spectrum and Transmit Power Management Extensions in the 5GHz band in Europe-IEEE 802.11h-2003 IEEE Standard for Information technology-Telecommunications and Information Exchange Between Systems-LAN/MAN Specific Requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Spectrum and Transmit Power Management Extensions in the 5GHz band in Europe
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Size: 399360 |
Author: 周金喜 |
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Description: Main profile in H.264
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Size: 4096 |
Author: pkverma |
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Description: 随着移动通信技术的发展和移动终端性能的提高,移动通信网络提供流媒体服务已经成为可能。分析移动流媒体网络传输协议和H.264视频编码格式特点,参照802.11标准,提出移动流媒体客户端的总体架构,并针对Windows Mobile平台特点予以实现。移动流媒体客户端可以运行在无线局域网中,主要由网络模块、解码模块和音视频回放模块组成。网络模块以动态库的方式实现RTP/RTCP/RTSP网络协议,采用消息队列的设计模式提高网络模块的效率 H.264与AMR解码模块由PC向嵌入式平台移植并作相应的封装 流媒体数据回放模块根据系统提供的资源,综合考虑效率与通用性,自动选择最优回放模式。根据3GPP移动流媒体总体结构要求,结合移动网络资源有限和移动智能终端处理能力较弱的特点,扩展局域网移动流媒体客户端的功能,优化流媒体播放器的架构,提高播放系统的效率。在局域网流媒体客户端设计的基础上,使用内网穿越技术穿透移动网关,实现流媒体数据通过移动通信网络传输。在网络模块中加入传输码率适配技术以根据移动通信网络的带宽自动调整服务器端数据发送速率。修改流媒体缓冲区数据排队策略,充分利用网络数据包之间的相关性-Streaming media services over mobile communication network come to be possible because of the development of the mobile communication technology and the improvement of the mobile terminals performance.Based on 802.11 standards, we have submitted the framework of the mobile streaming media clients and it is implemented on the Windows Mobile platform through the analysis on the mobile streaming media network transport protocol and the features of H.264 video encoding format.
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Size: 1184768 |
Author: zhz |
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