专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20230102960A1 Controlling Compensation of Chromatic Dispersion in Optical Transport Networks 有权
公开(公告)号：US20230102960A1
公开(公告)日：2023-03-30
申请号：US17768489
申请日：2019-10-16
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Giulio Bottari , Fabio Cavaliere , Paola Iovanna
IPC分类号： H04B10/2513 , H04J14/02
摘要： A method (200) of controlling compensation of chromatic dispersion in an optical transport network. The method comprises determining (202) whether a residual dispersion, RD, of a first path (3) within the network is within a defined RD range and if the RD of the first path is outside the defined RD range the method comprises identifying (204) a first tuneable dispersion compensation module, TDCM, crossed by the first path (3), configured to apply a respective value of dispersion compensation. The method also comprises determining (206) a different value of dispersion compensation to be applied by the first TDCM to bring the RD of the first path within the defined RD range; if (208) the first TDCM is crossed by at least one other path (1, 2), checking (210) that the respective RD of said at least one other path is within a respective defined RD range for said different value of dispersion compensation; and generating (212) a control signal comprising instructions configured to set the first TDCM to apply said different value of dispersion compensation.

2. 发明授权

US11363674B2 Processing delay tolerant communications 有权
公开(公告)号：US11363674B2
公开(公告)日：2022-06-14
申请号：US16768954
申请日：2017-12-12
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Giulio Bottari , Fabio Cavaliere , Filippo Ponzini
IPC分类号： H04W4/00 , G06F7/00 , H04W84/04 , H04W4/70 , H04W28/02
摘要： Methods and apparatus are provided for processing communications. In one aspect, a method comprises receiving first data from a first device and receiving second data from a second device, wherein the first data has a longer latency constraint than the second data. The method also comprises sending the first data over a network link to a processing node for processing the first data.

3. 发明授权

US11243356B2 Chromatic dispersion compensation 有权
公开(公告)号：US11243356B2
公开(公告)日：2022-02-08
申请号：US16630497
申请日：2017-07-21
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Fabio Cavaliere , Marco Romagnoli , Vito Sorianello
IPC分类号： G02B6/293 , G02B6/12 , H04B10/50 , H04B10/58
摘要： A transmitter (1) is configured to transmit an optical signal, the transmitter comprising an optical dispersion compensator (10) configured to compensate for chromatic dispersion of the optical signal. The optical dispersion compensator comprises a plurality of delay elements (20; 40). The plurality of delay elements (20; 40) have a combined response providing a delay to the transmitted optical signal which varies with frequency.

4. 发明授权

US11128938B2 Optical filtering module and method 有权
公开(公告)号：US11128938B2
公开(公告)日：2021-09-21
申请号：US16976101
申请日：2018-05-18
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Francesco Testa , Fabio Cavaliere , Erin Seder
IPC分类号： H04Q11/00 , G02B6/293 , G02B6/42 , H04B10/69 , H04J14/02
摘要： A method (100) is disclosed for filtering an optical signal to generate at least one electrical output. The method comprises receiving an optical signal (110) and directing at least a part of the optical signal through an n×m array of wavelength selective elements (120), the n×m array comprising n parallel groups, each group comprising m coupled wavelength selective elements. The method further comprises photodetecting an output from each of the n groups of coupled wavelength selective elements (130), and electrically selecting at least one of the photodetected outputs (140). Also disclosed are an optical filtering module (200, 300) a controller (400) for an optical filtering module and a computer program.

5. 发明授权

US11128395B2 Receiving an optical signal 有权
公开(公告)号：US11128395B2
公开(公告)日：2021-09-21
申请号：US16762305
申请日：2017-11-14
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Fabio Cavaliere , Paola Iovanna
IPC分类号： H04J14/08 , H04B10/564 , H04B10/60
摘要： Methods and apparatus are provided for receiving an optical signal. In one aspect, a method includes receiving a first optical signal comprising time division multiplexed transmissions from a plurality of optical transmitters, and determining that a transmission is not received during a time period from a first optical transmitter of the optical transmitters that is scheduled to transmit during the time period. A second optical signal is inserted into the first optical signal during the time period, the second optical signal having at least a non-zero power portion.

6. 发明申请

US20210281325A1 Optical Receiver and Method of Operation 有权
公开(公告)号：US20210281325A1
公开(公告)日：2021-09-09
申请号：US17260799
申请日：2018-07-31
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Tommaso Catuogno , Fabio Cavaliere , Luca Poti
IPC分类号： H04B10/61
摘要： A receiver module (100) is disclosed for receiving an optical input signal and generating an electrical output signal from the optical input signal. The receiver module comprises an input (110) for receiving an optical input signal and a polarising beam splitter (120) for splitting one of the optical input signal and a local recovery optical signal. The receiver module also comprises a multiport optical coupler (130) for coupling the outputs of the polarisation beam splitter and the other of the optical input signal and local recoveiy optical signal and outputting a plurality of outputs. The receiver module further comprises a first photodetector unit (140) for individually photodetecting the outputs of the multiport optical coupler and an optical modulation unit (150) for using each of the photodetected outputs to modulate a respective local conversion optical signal, where each local conversion optical signal has a different frequency from the other local conversion optical signals. The receiver module also comprises an optical coupler (160) for coupling the modulated local conversion optical signals to generate an optical output signal and a second photodetector unit (170) for photodetecting the optical output signal to generate an electrical output signal. Also disclosed are a method (500,700) and a multichannel receiver (300).

7. 发明授权

US11070478B2 Method and switch for managing traffic in transport network 有权
公开(公告)号：US11070478B2
公开(公告)日：2021-07-20
申请号：US16726468
申请日：2019-12-24
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Fabio Cavaliere , Giulio Bottari , Stefano Stracca
IPC分类号： H04L12/26 , H04L12/801 , H04L12/721 , H04L12/851 , H04L12/841 , H04L12/947 , H04L12/707
摘要： A method for managing traffic of a plurality of packets in a plurality of packet flows transmitted using a time-slotted interface. The packet flows traverse a plurality of switches of a transport network according to an assigned path from a source node to a destination node. The method comprises determining an end-to-end latency of a plurality of packets traversing a current switch in packet flows and assigning priority values to the packets traversing the current switch, wherein a priority value of a packet depends on the determined end-to-end latency of said packets. The method further comprises allocating a time slot in an output interface of the current switch to the packet having the highest priority value among the packets competing for said time slot.

8. 发明申请

US20210194587A1 Chromatic Dispersion Compensation 有权
公开(公告)号：US20210194587A1
公开(公告)日：2021-06-24
申请号：US16078126
申请日：2017-01-03
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Fabio Cavaliere , Michele MIDRIO , Marco ROMAGNOLI , Vito SORIANELLO
IPC分类号： H04B10/2513 , H04B10/2525 , H04B10/2569
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).

9. 发明授权

US10763970B2 Encoding for optical transmission 有权
公开(公告)号：US10763970B2
公开(公告)日：2020-09-01
申请号：US16323304
申请日：2016-08-10
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Fabio Cavaliere , Enrico Forestieri
IPC分类号： H04B10/516
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.

10. 发明申请

US20170180070A1 Method and Apparatus for Determining Propagation Delay in a Communications Network 有权
公开(公告)号：US20170180070A1
公开(公告)日：2017-06-22
申请号：US15309509
申请日：2014-05-08
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Stefano Ruffini , Fabio Cavaliere , Stefano Stracca
IPC分类号： H04J3/06 , H04L12/26 , H04B1/7073 , H04B7/212 , H04B7/26 , H04B10/2575
CPC分类号： H04J3/0658 , H04B1/7073 , H04B7/2125 , H04B7/2678 , H04B10/073 , H04B10/25753 , H04B10/25758 , H04B2215/065 , H04J3/0644 , H04J3/0647 , H04J3/065 , H04J3/0667 , H04J3/0676 , H04L43/0858 , H04L43/0864 , H04L43/106
摘要： A method and apparatus for determining propagation delay of a first path and or of a second path which connect a first transceiver unit associated with a first clock to a second transceiver unit associated with a second clock in a communications network. The apparatus comprises a control unit configured to cause the first transceiver unit to transmit a first signal to the second transceiver unit over the first path and to receive a reply to the first signal from the second transceiver unit over the second path, and to transmit a second signal to the second transceiver unit over the second path and to receive a reply to the second signal from the second transceiver unit over the first path. The apparatus further comprises a receiving unit configured to receive a first time reference representing the time of transmission of the first signal from the first transceiver unit, a second time reference representing the time of receipt of the first signal at the second transceiver unit, a third time reference representing the time of transmission of the reply to the second signal from the second transceiver unit and a fourth time reference representing the time of receipt of the reply to the second signal at the first transceiver unit. The apparatus further comprises a determining unit configured to determine a propagation delay of the first path and or of the second path using the first time reference, the second time reference, the third time reference and the fourth time reference.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式