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61. 发明申请

WO2022106012A1 OPTICAL FILTER AND METHODS 审中-公开
公开(公告)号：WO2022106012A1
公开(公告)日：2022-05-27
申请号：PCT/EP2020/082765
申请日：2020-11-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： BIGONGIARI, Alessandra , BIANCHI, Alberto , CAVALIERE, Fabio
IPC分类号： H04J14/02 , G02B6/293
摘要： Methods and apparatuses for optical filtering are disclosed. According to an embodiment, there is provided an optical filter for an optical network, the optical filter being configured to adaptively add or remove a target wavelength in a predetermined filter range, the optical filter comprising: a first resonator configured to have a first resonant wavelength outside a first sub-range of the predetermined filter range when a first resonance control variable of the first resonator is set at a first value, and a second resonant wavelength inside the first sub-range of the predetermined filter range when the first resonance control variable of the first resonator is set at a second value; and a second resonator configured to have a third resonant wavelength outside a second sub- range of the predetermined filter range when a second resonance control variable of the second resonator is set at a third value, and a fourth resonant wavelength inside the second sub-range of the predetermined filter range when the second resonance control variable of the second resonator is set at a fourth value.

62. 发明申请

WO2021098947A1 QUANTUM BIT DECODING APPARATUS, SYSTEM AND METHOD 审中-公开
公开(公告)号：WO2021098947A1
公开(公告)日：2021-05-27
申请号：PCT/EP2019/081684
申请日：2019-11-18
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CATUOGNO, Tommaso , CAVALIERE, Fabio , RALLI, Menelaos
IPC分类号： H04L9/08
摘要： Quantum bit decoding apparatus (200), configured to receive a photon having a qubit encoded in a property of the photon, comprising demodulation apparatus (210). The demodulation apparatus (210) comprises an optical modulator (212) configurable to randomly apply one of a plurality of modulation values for decoding the qubit to the property of the photon and an optical router (214, 414) to route the photon according to the qubit. The quantum bit decoding apparatus (200) also comprises optical delay apparatus (220) having an optical combiner (222), a first optical path (224), from the optical router to the optical combiner and a second optical path (226), from the optical router to the optical combiner. The second optical path (226) has a different optical path length to the first optical path to introduce a time delay between the paths. The quantum bit decoding apparatus (200) further comprises detection apparatus (230) configured to detect a photon and operable to determine whether a detected photon is delayed relative to a reference time and to determine the qubit according to the determined time delay.

63. 发明申请

WO2021028014A1 TRANSMITTING AND RECEIVING SYNCHRONIZATION DATA 审中-公开
公开(公告)号：WO2021028014A1
公开(公告)日：2021-02-18
申请号：PCT/EP2019/071538
申请日：2019-08-12
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： STRACCA, Stefano , DEBENEDETTI, Paolo , CAVALIERE, Fabio
IPC分类号： H04J3/16 , H04J3/06
摘要： Methods and apparatus are provided for transmitting synchronization data over a FlexE communications link. In an example aspect, a method of transmitting synchronization data over a FlexE communications link comprises, in response to a synchronization event, selecting a next slot of the FlexE communications link that is unallocated or is allocated to a FlexE client, and transmitting synchronization data associated with the synchronization event in the selected slot.

64. 发明申请

WO2020156642A1 CPRI DATA BLOCK TRANSMISSION METHOD AND APPARATUS 审中-公开
公开(公告)号：WO2020156642A1
公开(公告)日：2020-08-06
申请号：PCT/EP2019/052107
申请日：2019-01-29
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： STRACCA, Stefano , CAVALIERE, Fabio , DEBENEDETTI, Paolo
IPC分类号： H04J3/16 , H04L12/46 , H04L12/40 , H04L25/49 , H04L1/00
摘要： Methods and apparatus are provided for transmitting data. In one aspect, a method of transmitting data comprises identifying a start of a Common Public Radio Interface (CPRI) frame, identifying CPRI data blocks of the CPRI frame, and transmitting the CPRI data blocks of the CPRI frame in slots of a FlexE calendar of a Flex Ethernet physical layer group (FlexE PHY group).

65. 发明申请

WO2019201441A1 PATH COMPUTATION ENGINE AND METHOD OF CONFIGURING AN OPTICAL PATH FOR QUANTUM KEY DISTRIBUTION 审中-公开
公开(公告)号：WO2019201441A1
公开(公告)日：2019-10-24
申请号：PCT/EP2018/060027
申请日：2018-04-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CAVALIERE, Fabio , BOTTARI, Giulio , CATUOGNO, Tommaso
IPC分类号： H04L9/08 , H04J14/02 , H04L12/751 , H04L12/24
摘要： A path computation engine, PCE, (100) for an optical communications network comprising a plurality of nodes and a plurality of links. The PCE comprises a processor and memory comprising instructions executable by the processor whereby the PCE is operative to: receive a request to configure a quantum key, Qkey, path from a first node to a second node in the optical communications network for a quantum key distribution, QKD, signal for a quantum key for a secure data transmission signal; calculate a feasible Qkey path from the first node to the second node that is logically different to a traffic path from the first node to the second node for the secure data transmission signal, wherein the Qkey path is feasible if an optical signal power originating from the secure data transmission signal within the Qkey path, caused by optical interference of the secure data transmission signal with the QKD signal, is below a predetermined threshold value; and generate a control signal comprising instructions arranged to configure said feasible Qkey path.

66. 发明申请

WO2019149383A1 QUANTUM KEY DISTRIBUTION APPARATUS, SYSTEM AND METHOD 审中-公开
公开(公告)号：WO2019149383A1
公开(公告)日：2019-08-08
申请号：PCT/EP2018/052829
申请日：2018-02-05
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CAVALIERE, Fabio , FRESI, Francesco , MUHAMMAD, Imran , POTI, Luca
IPC分类号： H04B10/70 , H04L9/08
CPC分类号： H04B10/70 , H04L9/0852
摘要： Quantum key distribution apparatus (200) comprising: a gain switched laser (102) configured to generate optical pulses; optical modulation apparatus (104, 402) configured to apply at least one of a respective phase modulation and a respective intensity modulation to the optical pulses to encode respective quantum states on the optical pulses; a random number generator (202); a quantum encoder (204) configured to map a number received from the random number generator into a respective quantum state and to generate an output signal comprising an indication of said least one of a respective phase modulation and a respective intensity modulation; and optical attenuation apparatus (106) configured to attenuate the optical pulses to approximate a single photon source.

67. 发明申请

WO2018028784A1 ENCODING FOR OPTICAL TRANSMISSION 审中-公开
标题翻译：编码用于光传输
公开(公告)号：WO2018028784A1
公开(公告)日：2018-02-15
申请号：PCT/EP2016/069085
申请日：2016-08-10
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CAVALIERE, Fabio , FORESTIERI, Enrico
IPC分类号： H04B10/516
CPC分类号： H04B10/5167
摘要： A first signal is generated from an input signal by a first delay (70), and by low pass filtering (74). A second signal is generated from the input signal and from a second, longer delayed (72), version of the input signal, such that in response to a pulse on the input signal, the second signal has a sequence of two pulses, coinciding respectively with leading and trailing edges of a corresponding pulse on the first signal. If the signals are electrical, they can drive I and Q inputs of an IQ modulator (84, 86). If generated optically, they can be combined directly to produce the encoded optical output signal. By using such delays and filtering to produce these signals, a CAPS-3 encoded optical signal can be simulated, to obtain its chromatic dispersion tolerance advantages with less complex hardware and less power consumption.
摘要翻译：通过第一延迟（70）和低通滤波（74）从输入信号生成第一信号。从输入信号和第二更长延迟（72）版本的输入信号产生第二信号，使得响应于输入信号上的脉冲，第二信号具有两个脉冲序列，分别重合在第一信号上具有相应脉冲的前沿和后沿。如果信号是电的，它们可以驱动IQ调制器的I和Q输入（84,86）。如果以光学方式生成，它们可以直接组合以产生编码的光学输出信号。通过使用这样的延迟和滤波来产生这些信号，可以模拟CAPS-3编码的光信号，以获得其色散容差优势，其中硬件较少且功耗较低。

68. 发明申请

WO2017144187A1 CHROMATIC DISPERSION COMPENSATION 审中-公开
标题翻译：色散补偿
公开(公告)号：WO2017144187A1
公开(公告)日：2017-08-31
申请号：PCT/EP2017/050091
申请日：2017-01-03
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CAVALIERE, Fabio , ROMAGNOLI, Marco , SORIANELLO, Vito , MIDRIO, Michele
IPC分类号： H04B10/2513
CPC分类号： H04B10/25133
摘要： A device (10;150;200) is configured to receive an optical signal. The device comprises a dispersion compensator (210a) comprising a plurality of optical dispersion compensator units (220). Each optical dispersion compensator unit comprises a plurality of delay elements (20;40). The dispersion compensator (210a) is configured to selectively activate one or more of the optical dispersion compensator units (220). The dispersion compensator (210a) is configured to compensate for dispersion of the optical signal with the activated one or more optical dispersion compensator unit (200).
摘要翻译：设备（10; 150; 200）被配置为接收光信号。该设备包括色散补偿器（210a），其包括多个光学色散补偿器单元（220）。每个光学色散补偿器单元包括多个延迟元件（20; 40）。色散补偿器（210a）被配置为选择性地激活一个或多个光学色散补偿器单元（220）。色散补偿器（210a）被配置为利用激活的一个或多个光学色散补偿器单元（200）来补偿光信号的色散。

69. 发明申请

WO2017001003A1 OPTICAL BEAMFORMING 审中-公开
标题翻译：光学光束
公开(公告)号：WO2017001003A1
公开(公告)日：2017-01-05
申请号：PCT/EP2015/064909
申请日：2015-06-30
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： CAVALIERE, Fabio , PULERI, Marzio , D'ERICCO, Antonio
IPC分类号： H04B10/2575 , H01Q3/26
CPC分类号： H04J14/0212 , H01Q3/2676 , H04B10/11 , H04B10/2575 , H04B10/503 , H04B10/64 , H04B10/80 , H04B2210/006
摘要： A beamforming device for a phased array antenna, comprising: a laser light source (2) arranged to provide an optical spectrum comprising a plurality of spaced wavelengths, and a distribution unit (4) configured to distribute one or more of the plurality of spaced wavelengths onto a plurality of optical paths (6). A wavelength selection device (8) configured to receive the plurality of spaced wavelengths on each of the plurality of optical paths. One or more phase shift unit (12) connected to a said wavelength selection device, wherein the phase shift unit is configured to introduce a phase shift to a received wavelength. The wavelength selection device on each optical path is configured to selectively transmit a wavelength to the phase shift unit. The wavelength selection device is configured to receive the said phase shifted wavelength from the phase shift unit (12). The beamforming device further comprising a heterodyning device (16) configured to generate a signal for transmission by an element of the phased array antenna, wherein the heterodyning device is configured to heterodyne a plurality of selected spectral components of the spaced wavelengths of the laser light source.
摘要翻译：一种用于相控阵天线的波束成形装置，包括：激光源（2），被布置成提供包括多个间隔波长的光谱;以及分配单元（4），其配置成分布所述多个间隔波长中的一个或多个到多个光路（6）上。波长选择装置（8），被配置为在多个光路中的每一个上接收多个间隔波长。连接到所述波长选择装置的一个或多个相移单元（12），其中所述相移单元被配置为向所接收的波长引入相移。每个光路上的波长选择装置被配置为选择性地向相移单元发送波长。波长选择装置被配置为从相移单元（12）接收所述相移波长。波束形成装置还包括外差装置（16），其被配置为产生用于由相控阵列天线的元件进行传输的信号，其中所述外差装置被配置为外差激光源的间隔波长的多个选定光谱分量。

70. 发明申请

WO2016086958A1 WIRELESS COMMUNICATION NETWORK APPARATUS AND METHOD OF TRANSMITTING COMMUNICATIONS TRAFFIC IN SIMPLE FORMAT 审中-公开
标题翻译：无线通信网络设备和简单格式传输通信的方法
公开(公告)号：WO2016086958A1
公开(公告)日：2016-06-09
申请号：PCT/EP2014/076134
申请日：2014-12-01
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： GIORGI, Luca , PONZINI, Filippo , CAVALIERE, Fabio , TROJER, Elmar
IPC分类号： H04B10/2575 , H04W88/08
CPC分类号： H04B10/25752 , H04W56/001
摘要： A wireless communications network radio unit (10) comprising: an input (12) arranged to receive a radio over fibre, RoF, input optical signal (14) carrying digital radio communications traffic for transmission from a plurality of antenna elements, synchronisation traffic and control and management traffic; a digital receiver (16) arranged to receive and terminate the RoF input optical signal to obtain the digital radio communications traffic; a framer (18) arranged to frame the digital radio communications traffic into at least one digital traffic stream consisting of the digital radio communications traffic for transmission from a plurality of the antenna elements and clock recovery information; and at least one optical transmitter (20) arranged to generate an RoF output optical signal (22) carrying the digital traffic stream.
摘要翻译：一种无线通信网络无线电单元（10），包括：输入端（12），被配置为接收光纤上的无线电，RoF，承载用于从多个天线元件传输的数字无线电通信业务的输入光信号（14），同步业务和控制和管理流量; 数字接收器（16），被布置为接收和终止所述RoF输入光信号以获得所述数字无线电通信业务; 成帧器（18），被布置成将数字无线电通信业务成帧为由数字无线电通信业务组成的至少一个数字业务流，用于从多个天线单元传输数据;以及时钟恢复信息; 以及至少一个光发送器（20），被布置成产生承载数字业务流的RoF输出光信号（22）。

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