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公开(公告)号：US20180109379A1
公开(公告)日：2018-04-19
申请号：US15567200
申请日：2015-04-22
Applicant: Nokia Technologies Oy
Inventor： David Bitauld , Hongwei Li , Antti Niskanen
IPC: H04L9/08 , G02B6/27 , G02B6/293 , G02B6/28 , H04B10/548
CPC classification number: H04L9/0858 , G02B6/272 , G02B6/274 , G02B6/278 , G02B6/2861 , G02B6/29352 , G02B6/29395 , G02F1/21 , H04B10/2569 , H04B10/532 , H04B10/548 , H04B10/70 , H04L9/0852
Abstract: According to an example aspect, there is provided an apparatus comprising a first optical converter coupled to a fibre interface and to two waveguides, a dual rail encoder configured to encode dual rail form light from the two waveguides with payload information, and wherein the dual rail encoder is coupled to the first optical converter or to a second optical converter disposed between the dual rail encoder and the fibre interface, and wherein the first optical converter or the second optical converter is coupled so as to provide polarization encoded light into the fibre interface.
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公开(公告)号：US10990704B2
公开(公告)日：2021-04-27
申请号：US16086643
申请日：2016-03-23
Applicant: Nokia Technologies Oy
Inventor： Troels Roennow , Hongwei Li , Enrique Martin Lopez
Abstract: According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to compile a set of transactions in a block chain based resource management system that have taken place after the most recent block was established, establish a new block in the block chain, and in establishing the new block, for transactions associated with verification accept messages and lacking sufficient resources, cause transferring of the lacking resources from verification nodes having sent the verification accept messages.
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公开(公告)号：US10887093B2
公开(公告)日：2021-01-05
申请号：US15752346
申请日：2015-08-14
Applicant: Nokia Technologies Oy
Inventor： Hongwei Li , Enrique Martin-Lopez
Abstract: In some example embodiments, there is provided an apparatus. The apparatus may include a frequency shifter configured to shift a reference signal to a portion of an optical spectrum separate from another portion of the optical spectrum being used by a signal of interest; and a polarization rotator configured to provide the reference signal shifted and rotated by the polarization rotator. The apparatus may also include a modulator configured to modulate the signal of interest with coherent state information from which quantum key information is derivable. Related systems, methods, and articles of manufacture are also disclosed.
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公开(公告)号：US10574449B2
公开(公告)日：2020-02-25
申请号：US15567200
申请日：2015-04-22
Applicant: Nokia Technologies Oy
Inventor： David Bitauld , Hongwei Li , Antti Niskanen
IPC: H04L29/06 , H04L9/08 , H04B10/70 , G02F1/21 , H04B10/532 , H04B10/2569 , G02B6/27 , G02B6/28 , G02B6/293 , H04B10/548
Abstract: According to an example aspect, there is provided an apparatus comprising a first optical converter coupled to a fiber interface and to two waveguides, a dual rail encoder configured to encode dual rail form light from the two waveguides with payload information, and wherein the dual rail encoder is coupled to the first optical converter or to a second optical converter disposed between the dual rail encoder and the fiber interface, and wherein the first optical converter or the second optical converter is coupled so as to provide polarization encoded light into the fiber interface.
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公开(公告)号：US09929806B2
公开(公告)日：2018-03-27
申请号：US14890219
申请日：2013-05-14
Applicant: Nokia Technologies Oy
Inventor： Joachim Wabnig , Antti Niskanen , Hongwei Li , David Bitauld
IPC: H04B10/00 , H04B10/114 , H04B10/112
CPC classification number: H04B10/1143 , H04B10/1125
Abstract: Adjustment of an optical component of a device includes determining of at least one derivative of coupling efficiency of the optical component as a function of parameters used for control of a steering function of the optical component. At least one oscillating component is induced into the parameters for the determining. The adjustment of the optical component is based on the determined at least one derivative.
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Patent Agency Ranking
公开(公告)号：US09794065B2
公开(公告)日：2017-10-17
申请号：US14435695
申请日：2012-10-15
Applicant: Nokia Technologies Oy
Inventor： Joachim Wabnig , Antti Niskanen , Hongwei Li , David Bitauld
CPC classification number: H04L9/0858 , H04B10/70 , H04L2209/24 , H04L2209/34
Abstract: Methods and apparatus for distribution of keys are disclosed. An optical signal for carrying encoded information in accordance with a quantum key distribution scheme is generated. The generated optical signal has a wavelength which is changed to another wavelength prior to transmission of the optical signal. The optical signal carrying the encoded information and having the changed wavelength is received, where after decoding of the information takes place by means of detector apparatus operating in the changed wavelength.
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公开(公告)号：US20170288784A1
公开(公告)日：2017-10-05
申请号：US15508061
申请日：2014-09-04
Applicant: Nokia Technologies Oy
Inventor： Hongwei Li , David Bitauld
IPC: H04B10/69 , H04B10/40 , H04B10/50 , G02B26/08 , H04B10/114
CPC classification number: H04B10/691 , G02B5/12 , G02B26/08 , G02B26/10 , G02B27/30 , H04B10/114 , H04B10/40 , H04B10/503 , H04B10/70 , H04L9/0852
Abstract: According to an example aspect of the present invention, there is provided an apparatus (201) comprising adjustable optical equipment (290), a position sensitive photodetector (280), at least one light emitter (220), and control circuitry (104) configured to cause the light emitter (220) and the adjustable optical equipment (290) to output from the apparatus (201) a divergent beam of light, to determine a location of a light signal on the position sensitive photodetector (280) and to cause at least one of the at least one light emitter (220) and the adjustable optical equipment (290) to output from the apparatus (201) a collimated beam of light to a direction selected based at least in part on the location of the light signal on the position sensitive photodetector (280).
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公开(公告)号：US11196573B2
公开(公告)日：2021-12-07
申请号：US16491053
申请日：2017-03-06
Applicant: Nokia Technologies Oy
Inventor： Troels Roennow , Enrique Martin Lopez , Hongwei Li , Karina Palyutina
Abstract: A computer-implemented method for secure de-centralized domain name system, the method comprising: recording a domain registration transaction to a blockchain, the domain registration transaction comprising a domain name, a domain primary key corresponding to a domain public key and domain certificate information for a server node; recording a domain security transaction, comprising the domain public key, to the blockchain to generate a domain name record comprising the domain name, an associated IP address, the domain public key and the domain certificate information, wherein the domain security transaction being signed using the domain primary key; transmitting, by a client node, a domain name request to a domain name node; receiving, by the client node, a domain name response from the domain name node, the domain name response comprising the domain public key, the domain certificate information and the associated IP address retrieved from the domain name record of the blockchain; and initiating a secure communication between the client node and the server node using at least one of the domain public key and the domain certificate information.
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公开(公告)号：US20210192446A1
公开(公告)日：2021-06-24
申请号：US16757469
申请日：2018-10-26
Applicant: Nokia Technologies Oy
Inventor： David Bitauld , Hongwei Li , Enrique Martin-Lopez , Karina Palyutina , Troels F. Roennow
Abstract: According to an example aspect of the present invention, there is provided a method, comprising: defining a delivery identifier for delivery of goods from a sender to a receiver, defining a relay for the delivery of goods, selecting one or more sender couriers to send the goods to the relay and/or selecting one or more receiver couriers to receive the goods from the relay, generating for the goods delivery a smart contract comprising cryptographic tokens for confirming delivery, wherein the smart contract is a computerized transaction protocol and is configured to validate delivery of the goods on the basis of tokens from the couriers, providing the smart contract for the goods delivery to the distributed network, and providing the cryptographic tokens, the delivery identifier and an identifier of the relay to the selected one or more couriers.
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公开(公告)号：US10187162B2
公开(公告)日：2019-01-22
申请号：US15508061
申请日：2014-09-04
Applicant: Nokia Technologies Oy
Inventor： Hongwei Li , David Bitauld
IPC: H04B10/69 , H04B10/114 , H04B10/40 , H04B10/50 , G02B26/08 , G02B26/10 , G02B27/30 , H04B10/70 , G02B5/12 , H04L9/08
Abstract: According to an example aspect of the present invention, there is provided an apparatus (201) comprising adjustable optical equipment (290), a position sensitive photodetector (280), at least one light emitter (220), and control circuitry (104) configured to cause the light emitter (220) and the adjustable optical equipment (290) to output from the apparatus (201) a divergent beam of light, to determine a location of a light signal on the position sensitive photodetector (280) and to cause at least one of the at least one light emitter (220) and the adjustable optical equipment (290) to output from the apparatus (201) a collimated beam of light to a direction selected based at least in part on the location of the light signal on the position sensitive photodetector (280).
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