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21. 发明授权

US07653083B2 Interface method between remote radio unit and centralized base transceiver station 失效
标题翻译：远程无线电单元与集中式基站收发台之间的接口方式
公开(公告)号：US07653083B2
公开(公告)日：2010-01-26
申请号：US11572027
申请日：2004-07-13
申请人： Sheng Liu , Yulin Li
发明人： Sheng Liu , Yulin Li
IPC分类号： H04J3/16 , H04J1/16
CPC分类号： H04W88/085 , H04J3/0682 , H04J3/1617 , H04J3/1658 , H04J2203/0035
摘要： The present invention discloses a method for transmitting signal between a central channel processing Main Unit (MU) and one or more Remote Radio Units (RRUs) by using SDH/OTN in Centralized Base Transceiver Station system using remote radio head (RRH) technology. The method includes: dividing the communication interface between the MU and the RRUs into a user plane and a control plane, the user plane mainly for carrying I/Q sampling data concerning the user data, and the control plane mainly for carrying the data concerning control signaling; forming the I/Q sampling data concerning the user data carried by the user plane into an I/Q data frame via an I/Q data frame adaptation layer, then forming the I/Q data frame into a GFP frame via GFP and transmitting it on SDH/OTN; and carrying the control signaling of the control plane on UDP/IP and/or TCP/IP, and further carrying IP packet on PPP and forming it into a frame by HDLC, transmitting the HDLC frame including the control plane signaling on the SDH/OTN via the control character channel of the GFP frame. According to the present invention, the existing SDH/OTN transmission network is utilized directly, which further reduces the management and maintenance operation needed for signal transmission, as well as networking cost.
摘要翻译：本发明公开了一种使用远程无线电头（RRH）技术在集中式基站收发台系统中使用SDH / OTN在中央信道处理主单元（MU）与一个或多个远程无线单元（RRU）之间发送信号的方法。该方法包括：将MU与RRU之间的通信接口划分为用户平面和控制平面，用户平面主要用于携带有关用户数据的I / Q采样数据，主控用于携带有关控制的数据的控制平面信令; 通过I / Q数据帧适配层形成关于用户面承载的用户数据的I / Q采样数据到I / Q数据帧，然后经由GFP将I / Q数据帧形成GFP帧并发送在SDH / OTN上; 并在UDP / IP和/或TCP / IP上承载控制平面的控制信令，并进一步在PPP上承载IP包，并通过HDLC形成帧，在SDH / OTN上发送包含控制平面信令的HDLC帧通过GFP帧的控制字符通道。根据本发明，直接使用现有的SDH / OTN传输网络，进一步减少信号传输所需的管理和维护操作以及网络成本。

22. 发明申请

US20070091896A1 CPRI-based multiprotocol signal transmission method and apparatus in distributed base station system 失效
标题翻译：基于CPRI的多协议信号传输方法和装置在分布式基站系统中的应用
公开(公告)号：US20070091896A1
公开(公告)日：2007-04-26
申请号：US11397949
申请日：2006-04-03
申请人： Sheng Liu
发明人： Sheng Liu
IPC分类号： H04L12/28
CPC分类号： H04L5/0026 , H04J3/1617 , H04J2203/0035 , H04W4/18 , H04W92/14
摘要： The present invention provides a method for realizing transmission of multiprotocol client signals in a distributed base station subsystem, comprising: encapsulating client signals by a GFP-T frame; and mapping said GFP-T frame into a lower-layer transmission link to realize the transmission of client signals. Said lower-layer transmission link is a common public radio interface CPRI link. Said client signals are one of the following: baseband I/Q signals of WCDMA supported by CPRI protocol, baseband I/Q signals of radio interface protocols other than WCDMA, structured signals of E1/T1, STM-1 and other constant-rate links, structured variable-rate link signals such as Ethernet MAC frame signals, PPP/HDLC frame signals, etc. This method is also applicable to other types of synchronous transmission links between a remote radio unit and a primary baseband processing unit, e.g., the links as specified by OBSAI (Open Base Station Architecture Initiative).
摘要翻译：本发明提供了一种在分布式基站子系统中实现多协议客户端信号传输的方法，包括：通过GFP-T帧封装客户端信号; 并将所述GFP-T帧映射到下层传输链路中，以实现客户端信号的传输。所述下层传输链路是公共无线电接口CPRI链路。所述客户端信号是以下之一：由CPRI协议支持的WCDMA的基带I / Q信号，WCDMA以外的无线接口协议的基带I / Q信号，E1 / T1，STM-1和其他恒定速率链路的结构信号，以太网MAC帧信号，PPP / HDLC帧信号等结构化可变速率链路信号。该方法也适用于远程无线单元与主基带处理单元之间的其他类型的同步传输链路，例如链路如OBSAI（开放式基站架构计划）所规定的。

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