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1. 发明申请

WO2012015346A1 INTERFERENCE IDENTIFICATION AND MITIGATION IN WIRELESS COMMUNICATION 审中-公开
标题翻译：干扰识别和无线通信中的缓解
公开(公告)号：WO2012015346A1
公开(公告)日：2012-02-02
申请号：PCT/SE2011/050215
申请日：2011-02-24
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NEJATIAN, Alireza , SUNDBERG, Krister
发明人： NEJATIAN, Alireza , SUNDBERG, Krister
IPC分类号： H04W16/14
CPC分类号： H04W16/14 , H04W88/10
摘要： Interference in a wireless communication system receiver, such as at a base station (200, 1400), is identified based on monitoring automatic gain control (AGC) events. AGC statistics in combination with base band processing are used to identify the interference. Performance degradation is evaluated, and interference mitigation solutions are proposed based on the identified interference. Mitigation solutions include IRC, scheduling restrictions, and filter modifications including replacement of filters.
摘要翻译：基于监视自动增益控制（AGC）事件来识别诸如在基站（200,1400）的无线通信系统接收机中的干扰。 AGC统计与基带处理相结合，用于识别干扰。评估性能退化，并根据所识别的干扰提出干扰减轻解决方案。缓解解决方案包括IRC，调度限制和过滤器修改，包括更换过滤器。

2. 发明申请

WO2009067072A1 A METHOD AND A RADIO BASE STATION IN A TELECOMMUNICATIONS SYSTEM 审中-公开
标题翻译：电信系统中的方法和无线电基站
公开(公告)号：WO2009067072A1
公开(公告)日：2009-05-28
申请号：PCT/SE2008/050785
申请日：2008-06-26
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , ÖSTERLING, Jacob , BJÖRK, Vimar , NEJATIAN, Alireza
发明人： ÖSTERLING, Jacob , BJÖRK, Vimar , NEJATIAN, Alireza
IPC分类号： H04B1/04
CPC分类号： H01Q21/28 , H04B17/21 , H04W24/08 , H04W88/085 , H04W92/12
摘要： The present invention relates to radio base stations including a standardized interface CPRI between a Radio Equipment (RE) and a Radio Equipment Controller (REC). The present invention also relates to a method. The problem addressed is how to convey calibration information from the RE to the REC, when the capacity is occupied by radio IQ samples. The solution is to suppress the IQ samples to get capacity for the calibration information. Various embodiments of the invention focus on reducing the negative impact the suppression of IQ data may have on detecting the signals received.
摘要翻译：本发明涉及包括无线电设备（RE）和无线电设备控制器（REC）之间的标准接口CPRI的无线电基站。本发明还涉及一种方法。所处理的问题是当无线电IQ样本占用容量时，如何将校准信息从RE传送到REC。解决方案是抑制IQ样本以获得校准信息的容量。本发明的各种实施例集中在减少对IQ数据的抑制对检测所接收的信号可能产生的负面影响。

3. 发明申请

WO2014014396A1 ADJUSTING RECEIVE-TRANSMIT TIMING TO COMPENSATE FOR SWITCHING ERRORS IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：调整接收发送时间以补偿通信系统中的切换错误
公开(公告)号：WO2014014396A1
公开(公告)日：2014-01-23
申请号：PCT/SE2012/050847
申请日：2012-07-20
申请人： Telefonaktiebolaget L M Ericsson (publ) , NEJATIAN, Alireza , KAZMI, Muhammad
发明人： NEJATIAN, Alireza , KAZMI, Muhammad
IPC分类号： H04B7/06 , H04W56/00 , H04B17/00
CPC分类号： H04W56/0045 , H04B7/0671 , H04W56/0055
摘要： Techniques for compensating for the time misalignment of receive-transmit switching in a multi- antenna radio network node are disclosed. An example method begins with the detection (1020) of signal transmission timing for each of two or more antennas associated with the radio network node, for at least a first transmission period. Next, the radio network node determines (1030) that transmit timing for at least one of the antennas is misaligned by at least a first threshold time interval, based on the detected signal transmission timings. The example method continues with the adjustment (1040) of transmit timing for at least one of the antennas for one or more subsequent transmission periods, responsive to determining that the transmission timing for at least one of the antennas is misaligned.
摘要翻译：公开了用于补偿多天线无线电网络节点中接收发射切换的时间失配的技术。至少在第一传输周期中，示例性方法开始于对于与无线电网络节点相关联的两个或多个天线中的每一个的信号传输定时的检测（1020）。接下来，基于检测到的信号传输定时，无线电网络节点确定（1030）至少一个天线的发射定时不对准至少第一阈值时间间隔。响应于确定至少一个天线的发射定时未对准，该示例方法继续对于一个或多个后续传输周期的至少一个天线的发射定时的调整（1040）。

4. 发明申请

WO2010056171A1 A METHOD AND A DEVICE FOR CALIBRATION 审中-公开
标题翻译：一种用于校准的方法和装置
公开(公告)号：WO2010056171A1
公开(公告)日：2010-05-20
申请号：PCT/SE2008/051317
申请日：2008-11-17
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NEJATIAN, Alireza
发明人： NEJATIAN, Alireza
IPC分类号： H04B17/00
CPC分类号： H04B17/10 , H04B17/21
摘要： An eNodeB in a TDD system (100), comprising first and second transmitters (408-411 ), a first receiver (302; 402-405), a control unit (306, 416), and means (305, 415) for diverting part of a transmitted signal from the first and second transmitters (408-411 ) to the first receiver (302; 402-405). The diverting means (305, 415) are connected to the transmitter part via a switch function (308, 418) and the transceiver also comprises a delay component (304, 404. The control unit (306, 416) activates the switch (308, 418) when the output power of the transmitted signals falls below a threshold, and the delay component (304, 404) delays so that the diverted signals are received by the receiver part (303; 402-405) at a predefined point in time. The transceiver (300) comprises a comparison unit (307, 417) for comparing the diverted signals from the first and second transmitters after reception through the first receiver.
摘要翻译： TDD系统（100）中的eNodeB，包括第一和第二发射机（408-411），第一接收机（302; 402-405），控制单元（306,416）和用于转发的装置（305,415）来自第一和第二发射机（408-411）的传输信号的一部分到第一接收机（302; 402-405）。转移装置（305,415）经由开关功能（308,418）连接到发射器部分，并且收发器还包括延迟部件（304,404）。控制单元（306,416）激活开关（308,404） 418），当所发送的信号的输出功率下降到阈值以下时，并且所述延迟分量（304,404）延迟，以便在预定的时间点由所述接收器部分（303; 402-405）接收所述转移的信号。收发器（300）包括比较单元（307,417），用于在通过第一接收机接收之后比较来自第一和第二发射机的转发信号。

5. 发明申请

WO2013176590A1 METHOD, BASE STATION AND APPARATUS IN A BASE STATION FOR REDUCING INTERMODULATION DISTORTION 审中-公开
标题翻译：方法，基站和设备在减少交织失真的基站
公开(公告)号：WO2013176590A1
公开(公告)日：2013-11-28
申请号：PCT/SE2012/050560
申请日：2012-05-24
申请人： Telefonaktiebolaget L M Ericsson (publ) , SU, Youping , NEJATIAN, Alireza , HUSS, Fredrik
发明人： SU, Youping , NEJATIAN, Alireza , HUSS, Fredrik
IPC分类号： H04B1/52
CPC分类号： H04B1/1027 , H04B1/525
摘要： A method in a base station is provided for reducing distortion of an uplink signal received in a receiver part (20) of the base station, said distortion being caused by intermodulation, IM, products. The method comprises: generating (106), from a transmitter source signal, a modeled signal of IM components, as n th order IM components of the transmitter source signal, n being an integer value of 2, 3, 4 and/or 5 etc., and detecting (1 10) IM products of the received uplink signal, the received uplink signal comprising UL traffic components and the IM products, by correlating the received uplink signal with the IM components of the modeled signal. The method further comprises producing (1 12) a cancellation signal based on the detected IM products of the received uplink signal, and subtracting (1 14) the cancellation signal from the received uplink signal. Also, a similar apparatus in a base station is provided.
摘要翻译：提供了一种基站中的方法，用于减少在基站的接收机部分（20）中接收的上行链路信号的失真，所述失真是由互调，IM，乘积引起的。该方法包括：从发射机源信号产生（106）IM分量的建模信号，作为发射机源信号的n阶IM分量，n是2,3,4和/或5等的整数值。并且通过将所接收的上行链路信号与所建模的信号的IM分量相关联来检测接收的上行链路信号的（110）IM产品，所接收的上行链路信号包括UL业务分量和IM产品。该方法还包括基于接收到的上行链路信号的检测到的IM产物产生（112）消除信号，并从接收到的上行链路信号中减去（114）消除信号。此外，提供了基站中的类似装置。

6. 发明公开

EP2904833A2 TECHNIQUE FOR ADAPTING AN RF RECEIVER CONFIGURATION 有权
标题翻译：方法调整RF接收器的配置
公开(公告)号：EP2904833A2
公开(公告)日：2015-08-12
申请号：EP13770925.9
申请日：2013-10-01
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： SIOMINA, Iana , NEJATIAN, Alireza
IPC分类号： H04W24/02 , H04B17/00
CPC分类号： H04W64/00 , G01S5/021 , H04B17/0085 , H04B17/21 , H04B17/24 , H04B17/29 , H04B17/309 , H04W24/10
摘要： A technique for operating a radio network node having at least one radio frequency receiver for receiving signals according to a wireless communication standard is described. A method implementation of the technique comprises providing RF receiver capabilities of the radio network node by transmitting a report message comprising report information. The report information pertains to a current RF receiver configuration with one or more current RF characteristics or possible RF receiver configurations with a range of one or more possible RF characteristic. The method also comprises receiving a control message comprising control information, wherein the control information pertain to a control of the current RF receiver configuration. The RF receiver configuration is then adapted based on the control information.

7. 发明公开

EP2875591A1 ADJUSTING RECEIVE-TRANSMIT TIMING TO COMPENSATE FOR SWITCHING ERRORS IN A COMMUNICATION SYSTEM 有权
标题翻译：设置接收和传输调度用于通信系统切换错误
公开(公告)号：EP2875591A1
公开(公告)日：2015-05-27
申请号：EP12748580.3
申请日：2012-07-20
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： NEJATIAN, Alireza , KAZMI, Muhammad
IPC分类号： H04B7/06 , H04W56/00 , H04B17/00
CPC分类号： H04W56/0045 , H04B7/0671 , H04W56/0055
摘要： Techniques for compensating for the time misalignment of receive-transmit switching in a multi- antenna radio network node are disclosed. An example method begins with the detection (1020) of signal transmission timing for each of two or more antennas associated with the radio network node, for at least a first transmission period. Next, the radio network node determines (1030) that transmit timing for at least one of the antennas is misaligned by at least a first threshold time interval, based on the detected signal transmission timings. The example method continues with the adjustment (1040) of transmit timing for at least one of the antennas for one or more subsequent transmission periods, responsive to determining that the transmission timing for at least one of the antennas is misaligned.

8. 发明公开

EP2904721A1 METHOD AND APPARATUS FOR RF PERFORMANCE METRIC ESTIMATION 有权
标题翻译：方法和设备射频功率梅特赖克估计
公开(公告)号：EP2904721A1
公开(公告)日：2015-08-12
申请号：EP13770923.4
申请日：2013-10-01
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： SIOMINA, Iana , NEJATIAN, Alireza
IPC分类号： H04B17/00 , G01S5/02
CPC分类号： H04W64/00 , G01S5/021 , H04B17/0085 , H04B17/21 , H04B17/24 , H04B17/29 , H04B17/309 , H04W24/10
摘要： A technique for obtaining a radio frequency (RF) performance metric estimate for a receiver used for at least one of a positioning measurement and a timing measurement is described. A method implementation of that technique includes the steps of calculating at least one of a detection probability and a false alarm rate for a radio signal usable for the measurement, and obtaining at least one RF performance metric estimate for the receiver based on at least one of the calculated detection probability and the calculated false alarm rate.

9. 发明授权

EP2599342B1 INTERFERENCE IDENTIFICATION AND MITIGATION IN WIRELESS COMMUNICATION 有权转让
标题翻译：干扰检测和减少在无线通信
公开(公告)号：EP2599342B1
公开(公告)日：2015-05-13
申请号：EP11715292.6
申请日：2011-02-24
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： NEJATIAN, Alireza , SUNDBERG, Krister
IPC分类号： H04W16/14
CPC分类号： H04W16/14 , H04W88/10

10. 发明公开

EP2764637A1 METHOD AND APPARATUS FOR CONTROLLING PERFORMANCE IN A RADIO NODE 有权
标题翻译：方法和设备，用于控制输出功率是在无线电节点
公开(公告)号：EP2764637A1
公开(公告)日：2014-08-13
申请号：EP11797040.0
申请日：2011-09-08
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： NEJATIAN, Alireza , SU, Youping
IPC分类号： H04B7/06 , H04B17/00
CPC分类号： H04J3/14 , H04B7/0671 , H04B7/2643 , H04B17/0085 , H04B17/11
摘要： Method and apparatus for controlling performance in a TDD radio node (600) having multiple parallel branches (604, 606) and antennas (604a, 606a) for radio transmission of signals propagating through a transmit chain in each of the branches before emission from the antennas. A signal generator (602a) generates a signal that propagates through each branch, and tapping means (608) taps the signal from each of the branches after the transmit chain. A control unit (610) then determines a timing of the tapped signal from each of the branches, and monitors timing alignment of the branches based on the determined timing of tapped signals. If it is discovered that there is a timing misalignment between the branches which exceeds a preset acceptable limit, a transmission delay can be adjusted for at least one of the branches to reduce the misalignment.

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