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公开(公告)号：US20180024249A1
公开(公告)日：2018-01-25
申请号：US15657688
申请日：2017-07-24
Applicant: ADVA Optical Networking SE
Inventor： Kenneth HANN
Abstract: A device for producing timing information comprises equipment (101) that extracts first preliminary timing information from a first circular polarized component of a radio signal and second preliminary timing information from a second circular polarized component of the radio signal. The second circular polarized component has an opposite handedness and a time-delay with respect to the first circular polarized component. The device comprises a processing system (102) that produces the timing information based on the first preliminary timing information and/or the second preliminary timing information, and uses stored correction data for reducing the effect of the time-delay on the timing information when using the second preliminary timing information for producing the timing information. Thus, the timing information corresponds to the first preliminary timing information also when the timing information is produced based on the second preliminary timing information.
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公开(公告)号：US20220255654A1
公开(公告)日：2022-08-11
申请号：US17554715
申请日：2021-12-17
Applicant: ADVA OPTICAL NETWORKING SE
Inventor： Kenneth HANN
Abstract: An outdoor device of a timing system includes a receiver for receiving clock information from a satellite system, a processing system for running master functionality of a clock synchronization protocol to transfer the clock information to an indoor device of the timing system, and a transceiver for transferring data between the outdoor device and the indoor device. A memory device stores a fixed delay value estimating a time delay from a reception moment of a request message related to the clock synchronization protocol to a transmission moment of a reply message. There is no need to compute a difference between clock times corresponding to the reception moment and the transmission moment because the fixed delay value is used in lieu of the difference in the clock synchronization protocol. Thus, quality requirements related to an oscillator of the outdoor device can be mitigated.
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公开(公告)号：US20180220211A1
公开(公告)日：2018-08-02
申请号：US15869456
申请日：2018-01-12
Applicant: ADVA Optical Networking SE
Inventor： Kenneth HANN
CPC classification number: H04Q11/0421 , G01S19/25 , H04J3/0644 , H04J3/0688 , H04L29/06 , H04L41/0803 , H04L41/12 , H04L61/2015 , H04L67/1095
Abstract: A network element for distributing timing information includes a signal interface for receiving satellite signals transmitted by a satellite system and a processing system for producing the timing information based on the satellite signals and on assistance information received from a data transfer network. The network element transmits the timing information to the data transfer network in accordance with a timing transfer protocol. At a start-up, the network element requests a dynamic host configuration protocol server to send host configuration data containing a protocol address to be associated with the network element. The network element reads, from the host configuration data, information enabling the network element to get aware of the assistance information and obtains the assistance information in accordance with the read information. Thus, the dynamic host configuration protocol server enables the network element to operate as a network-assisted source of satellite-based timing.
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