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1. 发明授权

US08761834B2 Method and apparatus for antenna selection and power control in a multiple input multiple output wireless communication system 有权
标题翻译：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
IPC分类号： H04M1/00 , H04B7/06 , H04B7/04
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。

2. 发明申请

US20100166098A1 METHOD AND APPARATUS FOR ANTENNA SELECTION AND POWER CONTROL IN A MULTIPLE INPUT MULTIPLE OUTPUT WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：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。

3. 发明授权

US08068868B2 Uplink power alignment estimation in a communication system 有权
标题翻译：通信系统中的上行链路功率对齐估计
公开(公告)号：US08068868B2
公开(公告)日：2011-11-29
申请号：US12647570
申请日：2009-12-28
申请人： Jiangnan Jason Chen , Jamil M. Shihab
发明人： Jiangnan Jason Chen , Jamil M. Shihab
IPC分类号： H04B1/00 , H04B7/00 , H04Q11/12
CPC分类号： H04W52/221 , H04W52/146 , H04W52/367 , H04W52/545
摘要： A method and apparatus for uplink power alignment estimation in a communication system includes a step 600 of defining an upper threshold and a lower threshold for a transmit power correction (TPC) level. A next step 602 includes keeping a total of accumulated TPC commands. A next step 604 includes determining that a power correction is needed. A next step 608 includes generating a TPC command to be sent to a user equipment per the needed power correction. A next step 610 includes adjusting the total according to one of the following conditions: if the total is between the upper and lower thresholds then the total is changed per the needed power correction, if the total is at either of the thresholds and the needed power correction would not exceed either of the thresholds then the total is changed per the needed power correction, and if the total is at either of the thresholds and the needed power correction would exceed either of the thresholds then total is kept the same.
摘要翻译：在通信系统中用于上行链路功率对准估计的方法和装置包括定义用于发射功率校正（TPC）电平的上阈值和下阈值的步骤600。下一步骤602包括保持总共累积的TPC命令。下一步骤604包括确定需要功率校正。下一步骤608包括根据所需的功率校正产生要发送给用户设备的TPC命令。下一步骤610包括根据以下条件之一来调整总数：如果总数在上限和下限之间，则总体根据需要的功率校正而改变，如果总计处于任一阈值和所需功率校正不会超过阈值中的任何一个，然后根据所需的功率校正改变总数，并且如果总计处于阈值中的任一个，并且所需的功率校正将超过阈值的任一值，则总计保持相同。

4. 发明申请

US20090149144A1 WIRELESS BACKHAUL POWER AMPLIFICATION USING FOURIER TRANSFORM MATRICIES 有权
标题翻译：使用FOURIER变换矩阵的无线反向功率放大
公开(公告)号：US20090149144A1
公开(公告)日：2009-06-11
申请号：US11951445
申请日：2007-12-06
申请人： Yuda Yehuda Luz , Jiangnan Jason Chen
发明人： Yuda Yehuda Luz , Jiangnan Jason Chen
IPC分类号： H04B7/00 , H03F3/00
CPC分类号： H03F3/189 , H03F3/68 , H03F2200/198
摘要： An apparatus amplifies RF signals in a communication system by using a first directional coupler having at least two inputs and at least two outputs; at least two RF amplifiers, where an input of each RF amplifier is connected to a different one of the at least two outputs of the first directional coupler; and a second directional coupler having at least two inputs and at least two outputs, where each one of the at least two inputs is connected to an output of a different one of the at least two RF amplifiers. The at least two outputs of the second directional coupler are connected to at least two antennas, respectively.
摘要翻译：一种装置通过使用具有至少两个输入和至少两个输出的第一定向耦合器来放大通信系统中的RF信号; 至少两个RF放大器，其中每个RF放大器的输入连接到所述第一定向耦合器的所述至少两个输出中的不同的一个; 以及具有至少两个输入和至少两个输出的第二定向耦合器，其中所述至少两个输入中的每一个连接到所述至少两个RF放大器中的不同的一个的输出。第二定向耦合器的至少两个输出分别连接到至少两个天线。

5. 发明授权

US06661284B1 Method and apparatus for error compensation in a hybrid matrix amplification system 有权
标题翻译：混合矩阵放大系统误差补偿方法和装置
公开(公告)号：US06661284B1
公开(公告)日：2003-12-09
申请号：US10145909
申请日：2002-05-15
申请人： Yuda Luz , Jiangnan Jason Chen , Philip Zhou
发明人： Yuda Luz , Jiangnan Jason Chen , Philip Zhou
IPC分类号： H03F368
CPC分类号： H03F3/24 , H03F1/34 , H03F3/602 , H04B1/0483 , H04B2001/0433
摘要： A base station subsystem includes at least one transmit branch having a forward path that includes a signal processing unit coupled at an input to an input Fourier Transform Matrix (FTM) and at an output to an output FTM. The transmit branch further includes two error compensation loops, an inner feedback loop and an outer feedback loop. The inner feedback loop provides error compensation for error introduced by the signal processing section to a signal input to the transmit branch. The outer loop provides error compensation for all residual error introduced into the signal when routed through the transmit branch forward path after error compensation may be performed by the inner feedback loop.
摘要翻译：基站子系统包括至少一个具有前向路径的发射分支，该前向路径包括在输入端耦合到输入傅立叶变换矩阵（FTM）的信号处理单元，以及在输出端耦合到输出FTM。发射分支还包括两个误差补偿回路，内部反馈回路和外部反馈回路。内部反馈环路对由信号处理部分引入到发送分支的信号的误差提供误差补偿。外部环路可以通过内部反馈回路执行误差补偿后，通过发送分支正向路径进行路由时，为信号中引入的所有残余误差提供误差补偿。

6. 发明授权

US10003445B2 Method and apparatus for scheduling a controlchannel in an orthogonal frequency division multiplexing communication system 有权
公开(公告)号：US10003445B2
公开(公告)日：2018-06-19
申请号：US12770998
申请日：2010-04-30
申请人： Rapeepat Ratasuk , Jiangnan Jason Chen , Li-Fan Zhang
发明人： Rapeepat Ratasuk , Jiangnan Jason Chen , Li-Fan Zhang
IPC分类号： H04L5/00
CPC分类号： H04L5/0053
摘要： A scheduler capable of operating in an Orthogonal Frequency Division Multiplexing communication system schedules a control channel for a user equipment by determining a channel quality metric associated with the user equipment, calculating a target control channel element quality metric, determining a control channel element utilization rate, wherein the control channel element utilization rate a past rate of utilization of control channel elements, and selecting a control channel element aggregation level for the control channel based on the channel quality metric, the target control channel element quality metric, and the control channel element utilization rate. The scheduler then allocates control channel elements to the control channel based on the selected control channel element aggregation level. The scheduler further may steal power from one or more unused control channel elements and assign the stolen power to control channel elements assigned to the control channel.

7. 发明申请

US20110267967A1 METHOD AND APPARATUS FOR SCHEDULING A CONTROLCHANNEL IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM 有权
标题翻译：用于调度正交频分多址通信系统中的控制信道的方法和装置
公开(公告)号：US20110267967A1
公开(公告)日：2011-11-03
申请号：US12770998
申请日：2010-04-30
申请人： Rapeepat Ratasuk , Jiangnan Jason Chen , Li-Fan Zhang
发明人： Rapeepat Ratasuk , Jiangnan Jason Chen , Li-Fan Zhang
IPC分类号： H04W72/04 , H04W24/10 , H04L27/28
CPC分类号： H04L5/0053
摘要： A scheduler capable of operating in an Orthogonal Frequency Division Multiplexing communication system schedules a control channel for a user equipment by determining a channel quality metric associated with the user equipment, calculating a target control channel element quality metric, determining a control channel element utilization rate, wherein the control channel element utilization rate a past rate of utilization of control channel elements, and selecting a control channel element aggregation level for the control channel based on the channel quality metric, the target control channel element quality metric, and the control channel element utilization rate. The scheduler then allocates control channel elements to the control channel based on the selected control channel element aggregation level. The scheduler further may steal power from one or more unused control channel elements and assign the stolen power to control channel elements assigned to the control channel.
摘要翻译：能够在正交频分复用通信系统中操作的调度器通过确定与用户设备相关联的信道质量度量来计算用户设备的控制信道，计算目标控制信道单元质量度量，确定控制信道单元利用率，其中所述控制信道单元利用率控制信道单元的过去利用率，以及基于所述信道质量度量，所述目标控制信道单元质量度量和所述控制信道单元利用率来选择用于所述控制信道的控制信道单元聚合级别率。调度器然后基于所选择的控制信道元素聚合级别将控制信道元素分配给控制信道。调度器还可以从一个或多个未使用的控制信道单元窃取功率，并将被盗功率分配给控制分配给控制信道的信道单元。

8. 发明授权

US06785321B1 Apparatus and method for estimating the time of arrival of a spread spectrum signal in a wireless communication system 有权
标题翻译：用于估计无线通信系统中扩频信号的到达时间的装置和方法
公开(公告)号：US06785321B1
公开(公告)日：2004-08-31
申请号：US09703051
申请日：2000-10-31
申请人： Roy Yang , Jiangnan Jason Chen
发明人： Roy Yang , Jiangnan Jason Chen
IPC分类号： H04B7185
CPC分类号： H04B7/2668 , H04B1/7085 , H04W56/0075
摘要： A threshold tracking loop (TTL) (400) for detecting the time of arrival of a spread spectrum wireless communication signal includes a pseudo-noise (PN) generator (440) for generating a receive PN code for use in spread spectrum decoding and a series of time delay units (401-408) for adjusting a phase offset of the PN code. A first PN despreader (423) is coupled to the time delay units and PN generator for despreading an early pilot signal (413). A second despreader (425) is coupled to the time delay units and PN generator for despreading a late pilot signal (415). A first comparison circuit (443) is coupled to the first PN despreader for comparing a signal value of the early pilot signal with a preselected threshold value (322) and for advancing the PN code phase offset if the early signal value is greater than the threshold value. A second comparison circuit (445) is coupled to the second PN despreader for comparing a signal value of the late pilot signal with the preselected threshold value and for retarding the PN code phase offset if the late signal value is less than the threshold value. The TTL is completed by a loop filter coupled to the PN generator and the first and second comparison circuits.
摘要翻译：用于检测扩频无线通信信号的到达时间的阈值跟踪环路（TTL）（400）包括用于产生用于扩展频谱解码的接收PN码的伪噪声（PN）发生器（440）的时间延迟单元（401-408），用于调整PN码的相位偏移。第一PN解扩器（423）耦合到时间延迟单元和PN发生器，用于解扩早期导频信号（413）。第二解扩器（425）耦合到时间延迟单元和PN发生器，用于解扩后导频信号（415）。第一比较电路（443）耦合到第一PN解扩器，用于将早期导频信号的信号值与预选阈值（322）进行比较，并且如果早期信号值大于阈值（322）则推进PN码相位偏移值。第二比较电路（445）耦合到第二PN解扩器，用于将延迟导频信号的信号值与预选阈值进行比较，并且如果延迟信号值小于阈值，则延迟PN码相位偏移。 TTL由耦合到PN发生器和第一和第二比较电路的环路滤波器完成。

9. 发明申请

US20120275391A1 GRANTING SCHEDULING REQUESTS IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：无线通信系统中的授权调度要求
公开(公告)号：US20120275391A1
公开(公告)日：2012-11-01
申请号：US13097765
申请日：2011-04-29
申请人： Ningzhou Cui , Frank F. Liang , Jiangnan Jason Chen
发明人： Ningzhou Cui , Frank F. Liang , Jiangnan Jason Chen
IPC分类号： H04W72/08
CPC分类号： H04W72/1247 , H04W72/1289
摘要： Embodiments include methods and apparatus for granting scheduling requests in a wireless communications system that includes an eNB, a plurality of UEs, and a public safety system. The eNB receives multiple scheduling requests from multiple UEs, where each of the scheduling requests indicates that a corresponding UE is requesting uplink data transmission resources. The eNB determines a priority value for each of the scheduling requests based on multiple scoring criteria, resulting in a plurality of priority values associated with the scheduling requests. The eNB transmits one or more scheduling request grants to a subset of the UEs, where the subset includes one or more UEs that are associated with one or more scheduling requests having relatively high priority values. In an embodiment, the multiple scoring criteria include information associated with a public safety activity (e.g., a user role, a jurisdictional coverage area, an incident type, and/or an application type).
摘要翻译：实施例包括在包括eNB，多个UE和公共安全系统的无线通信系统中授予调度请求的方法和装置。 eNB从多个UE接收多个调度请求，其中每个调度请求指示对应的UE正在请求上行链路数据传输资源。 eNB基于多个评分标准来确定每个调度请求的优先级值，导致与调度请求相关联的多个优先级值。 eNB向UE的子集发送一个或多个调度请求授权，其中该子集包括与具有相对较高优先级值的一个或多个调度请求相关联的一个或多个UE。在一个实施例中，多个评分标准包括与公共安全活动（例如，用户角色，管辖覆盖区域，事件类型和/或应用类型）相关联的信息。

10. 发明申请

US20110159911A1 UPLINK POWER ALIGNMENT ESTIMATION IN A COMMUNICATION SYSTEM 有权
标题翻译：通信系统中的上行电源对齐估计
公开(公告)号：US20110159911A1
公开(公告)日：2011-06-30
申请号：US12647570
申请日：2009-12-28
申请人： Jiangnan Jason Chen , Jamil M. Shihab
发明人： Jiangnan Jason Chen , Jamil M. Shihab
IPC分类号： H04B7/005 , H04W72/04 , H04W52/00
CPC分类号： H04W52/221 , H04W52/146 , H04W52/367 , H04W52/545
摘要： A method and apparatus for uplink power alignment estimation in a communication system includes a step 600 of defining an upper threshold and a lower threshold for a transmit power correction (TPC) level. A next step 602 includes keeping a total of accumulated TPC commands. A next step 604 includes determining that a power correction is needed. A next step 608 includes generating a TPC command to be sent to a user equipment per the needed power correction. A next step 610 includes adjusting the total according to one of the following conditions: if the total is between the upper and lower thresholds then the total is changed per the needed power correction, if the total is at either of the thresholds and the needed power correction would not exceed either of the thresholds then the total is changed per the needed power correction, and if the total is at either of the thresholds and the needed power correction would exceed either of the thresholds then total is kept the same.
摘要翻译：在通信系统中用于上行链路功率对准估计的方法和装置包括定义用于发射功率校正（TPC）电平的上阈值和下阈值的步骤600。下一步骤602包括保持总共累积的TPC命令。下一步骤604包括确定需要功率校正。下一步骤608包括根据所需的功率校正产生要发送给用户设备的TPC命令。下一步骤610包括根据以下条件之一来调整总数：如果总数在上限和下限之间，则总体根据需要的功率校正而改变，如果总计处于任一阈值和所需功率校正不会超过阈值中的任何一个，然后根据所需的功率校正改变总数，并且如果总计处于阈值中的任一个，并且所需的功率校正将超过阈值的任一值，则总计保持相同。

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