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1. 发明申请

WO2008098918A1 METHOD AND SYSTEM FOR ESTABLISHING VOIP COMMUNICATION BY MEANS OF DIGITAL VIDEO BROADCASTING NETWORK 审中-公开
标题翻译：数字视频广播网络建立VOIP通信的方法与系统
公开(公告)号：WO2008098918A1
公开(公告)日：2008-08-21
申请号：PCT/EP2008/051659
申请日：2008-02-12
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , YU, Yuan , LIN, Yong Hua , WANG, Xiang Dong
发明人： YU, Yuan , LIN, Yong Hua , WANG, Xiang Dong
IPC分类号： H04L29/06
CPC分类号： H04L65/1069 , H04L65/104 , H04L65/1046 , H04L65/4076
摘要： The present inventiondiscloses a method and system for establishing VoIP communication by means of digital video broadcasting network. The methodcomprises: a first terminal sending a VoIP call request to a source VoIP server to which the first terminal belongs, the VoIP callrequest containing an address of a second terminal; the source VoIP server forwarding the VoIP call request to a destination VoIP server to which the second terminal belongs; the first terminal or any one of VoIP servers in a forwarding path from the source VoIP server to the destination VoIP server forwarding the VoIP call request to a digital video broadcasting front-end server; the digital video broadcasting front-end server converting the VoIP call request into a call request modulated in digital videosignals and broadcasting it within the digital video broadcasting network.The method and system for establishing VoIP communication by means of digital video broadcasting network according to the present invention can receive the VoIP call and accordingly establish the VoIP communication even if the terminal, for example a DVB/IP combo set-top-box, is disconnected to the IP network. Moreover, the present invention can be implemented conveniently and has lower cost.
摘要翻译：本发明揭示了通过数字视频广播网络建立VoIP通信的方法和系统。该方法包括：向第一终端所属的源VoIP服务器发送VoIP呼叫请求的第一终端，包含第二终端的地址的VoIP呼叫请求; 源VoIP服务器将VoIP呼叫请求转发到第二终端所属的目的地VoIP服务器; 从源VoIP服务器到目的地VoIP服务器的转发路径中的第一终端或任何一个VoIP服务器将VoIP呼叫请求转发到数字视频广播前端服务器; 数字视频广播前端服务器将VoIP呼叫请求转换成数字视频信号中调制的呼叫请求，并在数字视频广播网络内进行广播。根据本发明，通过数字视频广播网络建立VoIP通信的方法和系统即使终端（例如DVB / IP组合机顶盒）与IP网络断开连接，本发明也可以接收VoIP呼叫并因此建立VoIP通信。此外，本发明可以方便地实现并且具有较低的成本。

2. 发明申请

WO2011023592A1 WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统
公开(公告)号：WO2011023592A1
公开(公告)日：2011-03-03
申请号：PCT/EP2010/061960
申请日：2010-08-17
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , LIN, Yong Hua , ZHU, Zhen Bo , CHEN, Lin , WANG, Qing , YAN, Rong , CHEN, Jian Wen
发明人： LIN, Yong Hua , ZHU, Zhen Bo , CHEN, Lin , WANG, Qing , YAN, Rong , CHEN, Jian Wen
IPC分类号： H04W56/00 , H04W88/08
CPC分类号： H04W56/004 , H04W56/0055 , H04W88/085
摘要： The present invention discloses a remote radio head unit, a wireless communication system base station, and a data transmission synchronization method thereof. The wireless communication system base station comprises a remote radio head (RRH) and a baseband unit (BBU) communicably connected through a network, and wherein the BBU is used to process and transmit downlink data to the RRH, said wireless communication system base station further comprises: a time-delay measurement unit in the RRH which is used to measure a time-delay for the downlink data to arrive at the RRH from the BBU; a time-delay notification unit in the RRH for notifying from the RRH to the BBU of time-delay data on the time-delay measured by the time-delay measurement unit; a synchronization unit in the BBU for advancing the starting time for the BBU to process and transmit the downlink data by an amount of time obtained based on the time-delay data notified by the time-delay notification unit. The present invention can reduce or even eliminate the RRH reception time-delay caused by the BBU processing time-delay and data transmission jitter by measuring the time-delay for the downlink data frame to arrive at the RRH of the base station, and correcting the timing pulse for starting the downlink data processing and transmission on the BBU side.
摘要翻译：本发明公开了一种远程无线电头单元，无线通信系统基站及其数据传输同步方法。无线通信系统基站包括通过网络可通信地连接的远程无线电头（RRH）和基带单元（BBU），并且其中BBU用于处理和发送下行链路数据到RRH，所述无线通信系统基站进一步包括：RRH中的时间延迟测量单元，用于测量下行链路数据从BBU到达RRH的时间延迟; RRH中的延时通知单元，用于从RRH向BBU通知由延时测量单元测量的延时数据; BBU中的同步单元，用于使BBU的开始时间提前，以基于由延时通知单元通知的时间延迟数据获得的时间量来处理和发送下行链路数据。本发明可以通过测量下行链路数据帧的时间延迟来达到基站的RRH，从而减少甚至消除由BBU处理时延和数据传输抖动引起的RRH接收延时，用于开始BBU侧的下行链路数据处理和传输的定时脉冲。

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