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1. 发明申请

WO2005091429A1 A METHOD FOR PROVIDING ABILITY OF TUNING RESONANCE FREQUENCY FOR DIFFERENT APPLICATIONS 审中-公开
标题翻译：提供不同应用调谐频率的能力的方法
公开(公告)号：WO2005091429A1
公开(公告)日：2005-09-29
申请号：PCT/CN2004/000231
申请日：2004-03-19
申请人： HUAWEI TECHNOLOGIES CO., LTD. , ABBAS, Farhat , NEJATIAN, Alireza
发明人： ABBAS, Farhat , NEJATIAN, Alireza
IPC分类号： H01P7/06
CPC分类号： H01P1/2084
摘要： Disclosed is a method for providing ability of tuning resonance frequency in different applications. The method according to the invention at least comprises the step of adding ferroelectric disks in the resonators. Here, the ferroelectric disks have the relative dielectric constants varying according to change of ambient environment. In the invention, since the resonance frequency can vary according to the ambient environment, the tuning range of filters and duplexers/multiplexers having the resonators with ferroelectric disks is large. In addition, the resonance frequency can be changed in high frequency environment according to the invention. So, the invention can be used to improve the size and cost of the filters and duplexers/multiplexers in different applications, especially in low noise environment.
摘要翻译：公开了一种提供在不同应用中调谐共振频率的能力的方法。根据本发明的方法至少包括在谐振器中添加铁电盘的步骤。这里，铁电盘的相对介电常数根据周围环境的变化而变化。在本发明中，由于谐振频率可以根据环境环境而变化，所以具有铁电盘的谐振器的滤波器和双工器/多路复用器的调谐范围很大。此外，根据本发明，可以在高频环境中改变谐振频率。因此，本发明可用于改善不同应用中的滤波器和双工器/多路复用器的尺寸和成本，特别是在低噪声环境中。

2. 发明申请

WO2005086442A1 MULTI-CARRIER RECEIVER AND METHOD FOR MULTI-CARRIER SIGNAL RECEIVING 审中-公开
标题翻译：多载波接收机和多载波信号接收方法
公开(公告)号：WO2005086442A1
公开(公告)日：2005-09-15
申请号：PCT/CN2004/000186
申请日：2004-03-08
申请人： HUAWEI TECHNOLOGIES CO., LTD. , NEJATIAN, Alireza
发明人： NEJATIAN, Alireza
IPC分类号： H04L27/00
CPC分类号： H04L27/00
摘要： Disclosed is a multi-carrier receiver for receiving and processing multi-carrier signals. The receiver comprises a Radio Frequency (RF) part for receiving and processing RF signals; a mixer for down converting the RF signals to Intermediate Frequency (IF) signals; an IF part for filtering and amplifying the IF signals, and an Analogue to Digital Converter (ADC) part for converting the analogue signals to digital signals. The RF part, the mixer, the IF part and the ADC part are connected serially. The IF part includes multiple sets of channel filters for attenuating unwanted signals and interferences around the wanted signal and Variable Gain Amplifiers (VGAs) for amplifying the wanted signal outputted from the channel filters. In addition, different channel filters have different center frequencies respectively corresponding to each signal, and different VGAs have different amplifying gains for amplifying the inputted signal to full scale of ADC. A method for multi-carrier signal receiving is also provided in the invention.
摘要翻译：公开了一种用于接收和处理多载波信号的多载波接收机。接收机包括用于接收和处理RF信号的射频（RF）部分; 用于将RF信号下变频到中频（IF）信号的混频器; 用于滤波和放大IF信号的IF部分，以及用于将模拟信号转换为数字信号的模数转换器（ADC）部分。 RF部分，混频器，IF部分和ADC部分串行连接。 IF部分包括多组信道滤波器，用于衰减有用信号周围的不需要的信号和干扰，以及用于放大从信道滤波器输出的有用信号的可变增益放大器（VGA）。另外，不同的信道滤波器分别对应于每个信号的不同的中心频率，并且不同的VGA具有不同的放大增益，用于将输入的信号放大到ADC的满量程。本发明还提供了一种用于多载波信号接收的方法。

3. 发明申请

WO2008097142A1 A METHOD FOR IMPROVED RANDOM ACCESS IN A CELLULAR WIRELESS ACCESS SYSTEM 审中-公开
标题翻译：一种改进无线接入系统随机接入的方法
公开(公告)号：WO2008097142A1
公开(公告)日：2008-08-14
申请号：PCT/SE2007/050060
申请日：2007-02-05
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , ASTELY, David , EKSTRÖM, Hannes , TYNDERFELDT, Tobias , NEJATIAN, Alireza
发明人： ASTELY, David , EKSTRÖM, Hannes , TYNDERFELDT, Tobias , NEJATIAN, Alireza
IPC分类号： H04Q7/38
CPC分类号： H04W74/006 , H04W74/0833 , H04W74/0866
摘要： A method for use in a cellular wireless system (100) with a base station (120) which controls traffic to and from a cell (110) with a number of user terminals (130) which can receive traffic from the base station during a down link interval and transmit traffic to the base station during an up link interval. There are guard periods between the up link and the down link intervals, and between the down link and the up link intervals. The system comprises a random access channel for unscheduled transmissions by the user terminal, and the method comprises letting the base station determine and transmit information to user terminals for calculating an offset time for initiating random access transmissions relative to a nominal starting time for random access transmissions, said offset time also being used by the base station to initiate (530) reception of said random access transmissions.
摘要翻译：一种用于具有基站（120）的蜂窝无线系统（100）的方法，所述基站（120）控制具有多个用户终端（130）的小区（110）的业务，所述用户终端可在下行期间从所述基站接收业务链路间隔，并在上行链路间隔期间向基站发送业务。在上行链路和下行链路间隔之间以及下行链路和上行链路间隔之间都有保护时段。该系统包括用于用户终端的非预定传输的随机接入信道，并且该方法包括让基站确定并向用户终端发送信息，以计算用于发起随机接入传输的偏移时间，用于随机接入传输的标称起始时间所述偏移时间也被基站用来发起（530）所述随机接入传输的接收。

4. 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。

5. 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）。

6. 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。

7. 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。

8. 发明申请

WO2008088255A1 A METHOD AND A DEVICE FOR ENHANCED PERFORMANCE IN A CELLULAR WIRELESS TDD SYSTEM 审中-公开
标题翻译：一种在蜂窝无线TDD系统中增强性能的方法和装置
公开(公告)号：WO2008088255A1
公开(公告)日：2008-07-24
申请号：PCT/SE2007/050021
申请日：2007-01-16
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , ASTELY, David , TYNDERFELDT, Tobias , WESTERBERG, Erik , EKSTRÖM, Hannes , SKILLERMARK, Per , NEJATIAN, Alireza
发明人： ASTELY, David , TYNDERFELDT, Tobias , WESTERBERG, Erik , EKSTRÖM, Hannes , SKILLERMARK, Per , NEJATIAN, Alireza
IPC分类号： H04B17/00 , H04B1/707 , H04B1/04 , H04B15/02
CPC分类号： H04W72/1231 , H04W52/267 , H04W56/003
摘要： The invention discloses a method (800) for use in a cellular wireless system (100) with a base station (120), a cell (110) in the system and a first user terminal (130) which can be scheduled for receiving traffic from the base station during a down link period, and for transmitting traffic to the base station during an up link period. There is a first guard period (TUD) between the up link period and the down link period, and a second guard period (TDU) between the down link period and the up link period. The method (800) comprises measuring the interference level in the cell for part of the time between two consecutive down link periods, and varying at least one of the following in accordance with the measured interference level: the duration of the first or second guard period, the duration of the up link period, or the traffic sent in the up link period.
摘要翻译：本发明公开了一种在具有基站（120），系统中的小区（110）和第一用户终端（130）的蜂窝无线系统（100）中使用的方法（800），所述第一用户终端可被调度为从在下行链路周期期间的基站，并且用于在上行链路周期期间向基站发送业务。在上行链路周期和下行链路周期之间存在第一保护周期（TUD）和在下行链路周期与上行链路周期之间的第二保护周期（TDU）。方法（800）包括在两个连续的下行链路周期之间的部分时间内测量小区中的干扰电平，并且根据所测量的干扰电平来改变以下中的至少一个：第一或第二保护周期的持续时间，上行链路周期的持续时间，或在上行链路周期中发送的流量。

9. 发明申请

WO2008088252A1 A METHOD AND A DEVICE FOR ENHANCED PERFORMANCE IN A WIRELESS ACCESS TDD SYSTEM 审中-公开
标题翻译：一种无线接入TDD系统中增强性能的方法和装置
公开(公告)号：WO2008088252A1
公开(公告)日：2008-07-24
申请号：PCT/SE2007/050017
申请日：2007-01-15
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , TYNDERFELDT, Tobias , ASTELY, David , EKSTRÖM, Hannes , WESTERBERG, Erik , NEJATIAN, Alireza , SKILLERMARK, Per , HAARTSEN, Jacobus
发明人： TYNDERFELDT, Tobias , ASTELY, David , EKSTRÖM, Hannes , WESTERBERG, Erik , NEJATIAN, Alireza , SKILLERMARK, Per , HAARTSEN, Jacobus
IPC分类号： H04B7/26
CPC分类号： H04B7/2656 , H04W56/00 , H04W72/1278
摘要： The invention discloses a method (700) for use in a wireless access (100) comprising a base station (120, 800) and a cell (110) which can accommodate a first user terminal (130, 140). In the system, the first user terminal (130, 140) can be scheduled for receiving traffic from the base station (120) during a down link interval, and the first user terminal (130, 140) can be scheduled for transmitting traffic to the base station (120, 800) during an up link interval, with a guard period between them. According to the invention, the method (700) comprises the step (710) of obtaining a certain characteristic of the first user terminal which is relevant to the guard period, and the step (720) of making the scheduling in at least one of the intervals based upon the measured characteristic of the first user terminal (130, 140).
摘要翻译：本发明公开了一种用于无线接入（100）的方法（700），包括基站（120,800）和可容纳第一用户终端（130,140）的小区（110）。在系统中，可以调度第一用户终端（130,140）以在下行链路间隔期间从基站（120）接收业务，并且可以调度第一用户终端（130,140）以将业务传输到基站（120,800）在上行链路间隔期间具有保护周期。根据本发明，所述方法（700）包括获得与所述保护期相关的所述第一用户终端的某一特性的步骤（710），以及在所述保护时段中的至少一个中进行所述调度的步骤（720）基于第一用户终端（130,140）的测量特性的间隔。

10. 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。

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