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公开(公告)号：US08102785B2
公开(公告)日：2012-01-24
申请号：US12124493
申请日：2008-05-21
申请人： Sudarshan A. Rao , Kam Hung Wu , Yifei Yuan
发明人： Sudarshan A. Rao , Kam Hung Wu , Yifei Yuan
IPC分类号： H04J3/00
CPC分类号： H01Q3/267
摘要： The present invention provides a method of calibrating base station comprising a plurality of antennas and operating in an Orthogonal Frequency Division Multiplex (OFDM) and Time Division Duplex (TDD) mode. One embodiment of the method includes a method of calibrating a base station comprising a plurality of antennas for beamsteering forward link traffic data to a target mobile in a TDD wireless communication system. Each antenna is connected to a corresponding radio via a transmit/receive switch that is configured to switch between a receive path and a transmit path. The method includes transmitting a first signal from a first radio via a first cross-over cable coupled to the first radio and a second radio such that the first signal is received by the second radio. The method also includes transmitting a second signal from the second radio via a second cross-over cable coupled between the first and second radios such that the second signal is received by the first radio. The method further includes determining, based on at least one of the first or second signals, a relative weight that can be applied to traffic signals transmitted from the second radio.
摘要翻译： 本发明提供了一种校准包括多个天线并且以正交频分复用（OFDM）和时分双工（TDD））模式操作的基站的方法。 该方法的一个实施例包括校准包括多个天线的基站的方法，用于在TDD无线通信系统中向前向链路业务数据发送到目标移动台。 每个天线通过被配置为在接收路径和发射路径之间切换的发射/接收交换机连接到相应的无线电设备。 该方法包括经由耦合到第一无线电的第一交叉电缆和第二无线电从第一无线电发送第一信号，使得第一信号由第二无线电接收。 该方法还包括经由耦合在第一和第二无线电之间的第二交叉电缆从第二无线电发送第二信号，使得第二信号由第一无线电接收。 该方法还包括基于第一或第二信号中的至少一个确定可以应用于从第二无线电发送的业务信号的相对权重。
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公开(公告)号：US08218477B2
公开(公告)日：2012-07-10
申请号：US11095011
申请日：2005-03-31
申请人： Sudarshan A. Rao
发明人： Sudarshan A. Rao
IPC分类号： H04Q7/00
CPC分类号： H04W24/08
摘要： A wireless communication system includes the ability to determine that a fault condition associated with at least a portion of a cell associated with a base station is likely. Disclosed examples include using information regarding call activity levels of various portions of a cell for determining an expected call activity level for at least one portion of the cell. One example includes using the least active portion of the cell as the portion of interest. Previously observed activity levels provide information to automatically determine an expected relationship between the activity levels of the portions of the cell. Disclosed examples include determining whether a deviation between the actual call activity level and the expected call activity level is statistically significant enough to indicate a fault condition with at least the portion of the cell, which is of interest.
摘要翻译： 无线通信系统包括确定与基站相关联的小区的至少一部分相关联的故障状况很可能的能力。 公开的示例包括使用关于小区的各个部分的呼叫活动级别的信息来确定小区的至少一部分的预期呼叫活动级别。 一个示例包括使用小区的最小活动部分作为感兴趣的部分。 以前观察到的活动水平提供信息以自动确定细胞部分的活动水平之间的预期关系。 公开的示例包括确定实际呼叫活动级别和预期呼叫活动级别之间的偏差是否具有足够的统计学意义，足以指示具有感兴趣的至少部分小区的故障状况。
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公开(公告)号：US20090279461A1
公开(公告)日：2009-11-12
申请号：US12319117
申请日：2008-12-31
摘要： An enhanced access terminal (AT) that can serve as a “proxy wireless over-the-air backhaul or relay” is provided, to connect a base station with no backhaul to its neighboring fully functional base station that is connected to the NMS. In a further embodiment, the AT routing and relaying capability provided by the invention is extended to new OFDM based air-interface technologies being considered for 4th generation cellular standards such as LTE, UMB and WiMAX.
摘要翻译： 提供可以用作“代理无线空中回程或中继代理”的增强型接入终端（AT），将基站与没有回程的基站连接到与NMS相连的相邻功能基站。 在另一个实施例中，由本发明提供的AT路由和中继能力被扩展到正在考虑用于第四代蜂窝标准（例如LTE，UMB和WiMAX）的新的基于OFDM的空中接口技术。
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公开(公告)号：US20090310527A1
公开(公告)日：2009-12-17
申请号：US12319094
申请日：2008-12-31
IPC分类号： H04B7/14
CPC分类号： H04W92/20 , H04W8/24 , H04W72/082 , H04W88/04
摘要： An enhanced access terminal (AT) that can serve as a “proxy wireless over-the-air backhaul or relay” is provided, to connect a base station with no backhaul to its neighboring fully functional base station that is connected to the NMS. In a further embodiment, an architecture and protocol for storing and retrieving data at the base station lacking backhaul is provided, and, using that information, a mechanism by which the ATR can communicate the format information to the source to improve interference cancellation at the base station lacking backhaul, and neighboring base stations, due to backhaul transmission from the AT's routing and relaying capability.
摘要翻译： 提供可以用作“代理无线空中回程或中继代理”的增强型接入终端（AT），将基站与没有回程的基站连接到与NMS相连的相邻功能基站。 在另一个实施例中，提供了一种用于在缺少回程的基站处存储和检索数据的架构和协议，并且使用该信息，ATR可以将格式信息传送到源以提高基站处的干扰消除的机制 由于AT的路由和中继能力的回程传输，站点缺乏回程和邻近基站。
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5.发明申请Method for over-the-air base station management via access terminal relay 审中-公开通过接入终端继电器进行空中基站管理的方法公开(公告)号：US20090285133A1
公开(公告)日：2009-11-19
申请号：US12319151
申请日：2008-12-31
CPC分类号： H04W84/042 , H04B7/2606 , H04W84/047 , H04W88/04
摘要： An enhanced access terminal (AT) that can serve as a “proxy wireless over-the-air backhaul or relay” is provided, to connect a base station with no backhaul to its neighboring fully functional base station that is connected to the NMS. In a further embodiment, a method is provided for management of the base station with no backhaul via communications links established using the enhanced access terminal.
摘要翻译： 提供可以用作“代理无线空中回程或中继代理”的增强型接入终端（AT），将基站与没有回程的基站连接到与NMS相连的相邻功能基站。 在另一实施例中，提供了一种用于通过经由增强型接入终端建立的通信链路来管理没有回程的基站的方法。
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公开(公告)号：US20090252088A1
公开(公告)日：2009-10-08
申请号：US12286417
申请日：2008-09-30
IPC分类号： H04W4/00
CPC分类号： H04W88/04
摘要： An access-terminal routing methodology is provided that may be used to enable a wireless, meshed backhaul between base stations using existing wireless-access resources (time, bandwidth, code-space, power), protocols, and base station infrastructure. Accordingly, the invention provides a means to extend the coverage of existing networks by adding standalone base stations without wired or specialized wireless backhaul.
摘要翻译： 提供接入终端路由方法，其可以用于使用现有的无线接入资源（时间，带宽，码空间，功率），协议和基站基础设施来实现基站之间的无线，网状回程。 因此，本发明提供了通过添加独立的基站而无需有线或专用的无线回程来扩展现有网络的覆盖的手段。
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