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    • 4. 发明申请
    • AN OPTICAL COMMUNICATIONS SYSTEM
    • 光通信系统
    • WO2011113493A1
    • 2011-09-22
    • PCT/EP2010/053597
    • 2010-03-19
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)OLSSON, Bengt-ErikMÅRTENSSON, Jonas
    • OLSSON, Bengt-ErikMÅRTENSSON, Jonas
    • H04B10/12H04B10/155H04B10/148
    • H04B10/60H04B10/2575H04B10/516H04B10/611
    • An optical communications system (300, 400, 500) comprising a first transmit unit (301, 401, 402) and a first receive unit (302, 401, 402). The first transmit unit comprises an electro-optical modulator (311 ) for modulating one or more radio channels bearing electrical signals with a total bandwidth B by a laser signal (310) with a laser frequency f L1 , and the first transmit unit also comprises a transmit filter for outgoing signals from the electro-optical modulator. The first receive unit comprises an electro-optical demodulator (313) for demodulating the one or more electrical signals received from the first transmit unit by means of a Local Oscillator, LO (312), which produces an optical signal at a second frequency f L2 , and B ranges from the lower of f L1 and f L2 to the higher of f L1 and f L2.
    • 一种包括第一发射单元(301,401,402)和第一接收单元(302,401,402)的光通信系统(300,400,500)。 第一发送单元包括电光调制器(311),用于通过具有激光频率fL1的激光信号(310)调制具有总带宽B的具有电信号的一个或多个无线电信道,并且第一发送单元还包括发送 滤波器用于来自电光调制器的输出信号。 第一接收单元包括用于通过本地振荡器LO(312)解调从第一发射单元接收的一个或多个电信号的电光解调器(313),其产生第二频率fL2的光信号, B的范围从fL1和fL2的较低值到fL1和fL2的较高者。
    • 5. 发明申请
    • AN ANTENNA MOUNT STRUCTURE AND A MODULAR ANTENNA SYSTEM
    • WO2018153488A1
    • 2018-08-30
    • PCT/EP2017/054437
    • 2017-02-27
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    • OLSSON, Bengt-ErikLIGANDER, PerLARSSON, Christina
    • H01Q1/12H01Q3/04H01Q3/00H01Q1/24H01Q25/00
    • H01Q3/04H01Q1/1228H01Q1/246H01Q3/005H01Q3/08H01Q25/00
    • The disclosure relates to an antenna mount structure (1, 1') comprising: - An attachment arrangement (2, 2') for fixing the antenna mount structure (1, 1') to a support structure, - A central rod (3, 3') fixed to the attachment arrangement (2, 2'), - An antenna carrier (4, 4') rotatably mounted relative said central rod (3, 3'), and - At least one motor (5, 5') for rotating the carrier (4, 4') relative the central rod (3, 3'). The outer carrier (4, 4') comprises at least a first and a second carrier unit (4a, 4a', 4b, 4b') arranged to rotate independently and to carry a respective antenna (6a, 6b). The disclosure further relates to an antenna carrier module (100 a-d) comprising a motor (5a) and a carrier unit (4a, 4b) for carrying an antenna. The antenna carrier module (100 a-d) is adapted to be attached to and rotated relative a central rod (3) by the motor (5a). The antenna carrier module (100 a-d) is designed such that a multitude of antenna carrier modules (100 a-d) can be stacked onto each other while each carrier modules (100 a-d) being independently rotated. The disclosure also relates to a modular system (200) for building an antenna mount structure (1). The modular system (200) comprises a carrier module (100 a-d) and a fixing module (110). The fixing module (110) is used for attachment to a support structure and adapted to fit and interact with the antenna carrier module (100 a-d) in such that the carrier module (100 a-d) is enabled to rotate relative the fixing module (110). The disclosure also relates to a line-of-sight (LOS), wireless communication link system (300) comprising a multitude of multidirectional antenna units (301) built up by antenna mount structures (1) carrying at least two antennas.
    • 6. 发明申请
    • MICROWAVE RADIO LINK CHAIN EMPLOYING CONSTRUCTIVE INTERFERENCE
    • 微波无线电链路链使用建设性干扰
    • WO2017215772A1
    • 2017-12-21
    • PCT/EP2016/080973
    • 2016-12-14
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    • OLSSON, Bengt-ErikTHORSÉN, Per-Arne
    • H04B1/54H04B7/155H04B7/185H04B7/26H04B1/525H04H20/02H04L5/00
    • A wireless communication system comprising first, second, and third serially connected communication devices, the second communication device arranged to receive a first communication signal, and to transmit a second communication signal comprising at least part of the first communication signal to the third communication device. The third communication device is arranged to generate and transmit a feedback 5 signal to the second communications device indicating a phase difference between the first and the second communication signal at the third communication device. The second communication device is arranged to receive the feedback signal and to, based on the feedback signal, apply a phase shift to the second communication signal to improve a reception condition of the second communication signal at the third communication device.
    • 包括第一,第二和第三串行连接的通信设备的无线通信系统,所述第二通信设备被配置为接收第一通信信号,并且发送第二通信信号,所述第二通信信号包括至少部分所述第一 通信信号发送到第三通信设备。 第三通信设备被配置为生成并向第二通信设备发送指示第三通信设备处的第一和第二通信信号之间的相位差的反馈信号。 第二通信设备被配置为接收反馈信号并且基于反馈信号将相移应用于第二通信信号以改善第三通信设备处的第二通信信号的接收条件。
    • 10. 发明申请
    • ROBUST WIRELESS RADIO TRANSMISSION
    • 坚固无线无线传输
    • WO2017050374A1
    • 2017-03-30
    • PCT/EP2015/071913
    • 2015-09-23
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    • OLSSON, Bengt-ErikLINDGREN, Robert
    • H04W92/12
    • H04L5/0044H04W72/0446H04W72/0453H04W72/085H04W92/12
    • There is provided mechanisms for robust wireless radio transmission, preferably for fronthaul wireless radio links. A method is performed by a network node. The method comprises acquiring data to be transmitted on a wireless radio link 130. The method comprises separating the data into a radio access technology (RAT) payload part and a management data part. The method comprises acquiring channel condition values for the wireless radio link. The method comprises dynamically allocating resources between the RAT payload part and the management data part according to the channel condition values. The method comprises transmitting the data over the wireless radio link using said allocated resources. Preferably, the data is common public radio interface (CPRI) data. The RAT payload part may comprises in-phase and quadrature (IQ) samples. The management data part may further comprise pilot tones. The pilot tones may be used to assist mitigation of phase and frequency errors introduced on the wireless radio link 130. In general terms, the CPRI data format embeds a low frequency version of the antenna signal, for example in terms of a sampled baseband version of the antenna signal, to be transmitted and received from a wireless device lio as samples of the analog entity. A CPRI data stream may comprise multiple antenna signals of different RAT formats such as LTE and WCDMA, and I and Q samples from each channel may be interleaved in the CPRI data frames. The share of management data may be increased or decreased according to worsened or improved channel condition values, respectively. The method adaptively determines which modulation and/or coding format from at leat two modulation and/or coding formats with different spectral efficiency values to use according to the channel condition values.
    • 提供了用于鲁棒无线电传输的机制,优选地用于前端无线电链路。 网络节点执行一种方法。 该方法包括获取要在无线无线电链路130上发送的数据。该方法包括将数据分离成无线电接入技术(RAT)有效载荷部分和管理数据部分。 该方法包括获取无线无线电链路的信道条件值。 该方法包括根据信道条件值在RAT有效载荷部分和管理数据部分之间动态分配资源。 该方法包括使用所分配的资源在无线无线电链路上发送数据。 优选地,数据是公共无线电接口(CPRI)公共数据。 RAT有效载荷部分可以包括同相和正交(IQ)样本。 管理数据部分还可以包括导频音。 导频音可以用于帮助缓解在无线无线电链路130上引入的相位和频率误差。一般来说,CPRI数据格式嵌入天线信号的低频版本,例如,根据采样的基带版本 将作为模拟实体的样本从无线设备lio发送和接收的天线信号。 CPRI数据流可以包括不同RAT格式的多个天线信号,例如LTE和WCDMA,并且来自每个信道的I和Q采样可以在CPRI数据帧中交织。 管理数据的份额可以分别根据恶化或改善的信道条件值增加或减少。 该方法根据信道条件值自适应地确定使用具有不同频谱效率值的两个调制和/或编码格式的哪个调制和/或编码格式。