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公开(公告)号：US20110249550A1
公开(公告)日：2011-10-13
申请号：US12758140
申请日：2010-04-12
IPC分类号： G06F11/07
CPC分类号： H04W56/0045
摘要： An apparatus and method for uplink time synchronization in a communication system includes a first step 602 of receiving uplink data from a user equipment. A next step 604 includes storing a time error of the uplink data along with a time stamp. A next step 620 includes integrating the time error to provide an accumulated time error. A next step 606, 626 includes dumping the accumulated time error upon the time stamps of the accumulated data meeting a timing condition. A next step 610 includes comparing the accumulated time error against a threshold. A next step 616 includes scheduling a time advance with the user equipment if the accumulated time error exceeds the threshold.
摘要翻译： 在通信系统中用于上行链路时间同步的装置和方法包括从用户设备接收上行链路数据的第一步骤602。 下一步骤604包括存储上行链路数据的时间误差以及时间戳。 下一步骤620包括对时间误差进行积分以提供累积的时间误差。 下一步骤606,626包括在积累的数据的时间戳满足定时条件的情况下倾倒累积的时间误差。 下一步骤610包括将累积时间误差与阈值进行比较。 如果累积的时间误差超过阈值，则下一步骤616包括用用户设备调度时间提前。
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公开(公告)号：US08213406B2
公开(公告)日：2012-07-03
申请号：US12758140
申请日：2010-04-12
IPC分类号： H04J3/06
CPC分类号： H04W56/0045
摘要： An apparatus and method for uplink time synchronization in a communication system includes a first step 602 of receiving uplink data from a user equipment. A next step 604 includes storing a time error of the uplink data along with a time stamp. A next step 620 includes integrating the time error to provide an accumulated time error. A next step 606, 626 includes dumping the accumulated time error upon the time stamps of the accumulated data meeting a timing condition. A next step 610 includes comparing the accumulated time error against a threshold. A next step 616 includes scheduling a time advance with the user equipment if the accumulated time error exceeds the threshold.
摘要翻译： 在通信系统中用于上行链路时间同步的装置和方法包括从用户设备接收上行链路数据的第一步骤602。 下一步骤604包括存储上行链路数据的时间误差以及时间戳。 下一步骤620包括对时间误差进行积分以提供累积的时间误差。 下一步骤606,626包括在积累的数据的时间戳满足定时条件的情况下倾倒累积的时间误差。 下一步骤610包括将累积时间误差与阈值进行比较。 如果累积的时间误差超过阈值，则下一步骤616包括用用户设备调度时间提前。
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3.发明授权Method and apparatus for antenna selection and power control in a multiple input multiple output wireless communication system 有权多输入多输出无线通信系统中天线选择和功率控制的方法和装置公开(公告)号：US08761834B2
公开(公告)日：2014-06-24
申请号：US12544463
申请日：2009-08-20
申请人： Yehuda Y. Luz , Jiangnan Jason Chen
发明人： Yehuda Y. Luz , Jiangnan Jason Chen
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0639 , H04B7/0691
摘要： A MIMO base station is provided that includes a multi-channel transmitter having an input Fourier Transform Matrix (FTM) and an output FTM that are each coupled to an intervening signal processing section having multiple radio frequency (RF) amplifiers. A signal applied to an input port of the input FTM is distributed to all RF amplifiers of the transmitter by the input FTM and then is recombined by the output FTM such that the signal is routed to a single antenna of the multiple antennas of an antenna array. Thus, for both MIMO and non-MIMO transmissions, all RF amplifiers are used to amplify each input signal, but the non-MIMO transmission signal then is recombined such that only a single transmit antenna then is used to transmit the signal. The base station further provides antenna selection for a single antenna transmission and gain allocation among the multiple antennas for a MIMO transmission.
摘要翻译： 提供了一种MIMO基站，其包括具有输入傅里叶变换矩阵（FTM）和输出FTM的多通道发射机，每个耦合到具有多个射频（RF）放大器的中间信号处理部分。 施加到输入FTM的输入端口的信号通过输入FTM分配给发射机的所有RF放大器，然后由输出FTM重新组合，使得信号被路由到天线阵列的多个天线的单个天线 。 因此，对于MIMO和非MIMO传输，所有RF放大器用于放大每个输入信号，但是非MIMO传输信号然后被重组，使得仅使用单个发射天线来传输信号。 基站进一步提供用于单天线传输的天线选择和用于MIMO传输的多个天线之间的增益分配。
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4.发明申请METHOD AND APPARATUS FOR ANTENNA SELECTION AND POWER CONTROL IN A MULTIPLE INPUT MULTIPLE OUTPUT WIRELESS COMMUNICATION SYSTEM 有权多输入多输出无线通信系统中天线选择和功率控制的方法与装置公开(公告)号：US20100166098A1
公开(公告)日：2010-07-01
申请号：US12544463
申请日：2009-08-20
申请人： Yehuda Y. Luz , Jiangnan Jason Chen
发明人： Yehuda Y. Luz , Jiangnan Jason Chen
IPC分类号： H04B7/02
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0639 , H04B7/0691
摘要： A MIMO base station is provided that includes a multi-channel transmitter having an input Fourier Transform Matrix (FTM) and an output FTM that are each coupled to an intervening signal processing section having multiple radio frequency (RF) amplifiers. A signal applied to an input port of the input FTM is distributed to all RF amplifiers of the transmitter by the input FTM and then is recombined by the output FTM such that the signal is routed to a single antenna of the multiple antennas of an antenna array. Thus, for both MIMO and non-MIMO transmissions, all RF amplifiers are used to amplify each input signal, but the non-MIMO transmission signal then is recombined such that only a single transmit antenna then is used to transmit the signal. The base station further provides antenna selection for a single antenna transmission and gain allocation among the multiple antennas for a MIMO transmission.
摘要翻译： 提供了一种MIMO基站，其包括具有输入傅里叶变换矩阵（FTM）和输出FTM的多通道发射机，每个耦合到具有多个射频（RF）放大器的中间信号处理部分。 施加到输入FTM的输入端口的信号通过输入FTM分配给发射机的所有RF放大器，然后由输出FTM重新组合，使得信号被路由到天线阵列的多个天线的单个天线 。 因此，对于MIMO和非MIMO传输，所有RF放大器用于放大每个输入信号，但是非MIMO传输信号然后被重组，使得仅使用单个发射天线来传输信号。 基站进一步提供用于单天线传输的天线选择和用于MIMO传输的多个天线之间的增益分配。
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