Keysight Technologies, Inc.

Colin Michael Arthur

Francisco Javier Garcia

Ian Reading

Lee Alton Barford

Eric Breakenridge

Gery Verhaegen

Joeri Melis

Charles James McAuley

Paul Duncan

An instrument for measuring a physical quantity, an instrument system having a plurality of such instruments, and a method for operating such a system are described. The instrument includes a sensor, an instrument class error calculator and a communication interface. The sensor measures the physical quantity and generates a value, Vm, for the physical quantity. The instrument class error calculator provides an instrument class error associated with Vm. The instrument system includes a plurality of these instruments that are manufactured on an ongoing basis. The instrument system includes a database that stores a measurement generated by each instrument in a sample of the instruments during manufacture and a communication link between the database and one of the instruments in the class that provides information on the instruments based on measurements made after the one of the instruments in the class was manufactured.

System and method for providing information on measurement errors for instruments

A method that occurs at a distributed ledger system includes receiving a request for calibration information associated with a first unit identifier (UID) and determining one or more UIDs associated with the first UID. The method also includes, for each of the first UID and the one or more UIDs: determining, using one or more access control rules, that a requester is permitted access to the calibration information associated with a respective UID; obtaining at least one access security key for accessing the calibration information; obtaining, from at least one block of a first distributed ledger, a digital signature associated with the calibration information associated with the respective UID; using the at least one access security key to decrypt and access the calibration information associated with the respective UID; and verifying, using the digital signature, the calibration information associated with the respective UID.

Methods, systems, and computer readable media for verifying calibration information using a distributed ledger

An apparatus that includes a base-band input port and a processor and a method for operating the same are disclosed. The base-band input port receives digital base-band communications including a plurality of communication channels utilized in communications between an RF module and a plurality of user equipment (UE) in a cell serviced by that RF module. The processor demodulates specific channels in the digital base-band communications and extracts therefrom information specifying a unique identity for each of the UEs and a temporary identification used for communicating with that UE. The processor also extracts scheduling information identifying when one of the UEs is scheduled to upload information to the RF module and the communication channels over which the information is to be uploaded. The processor does not demodulate others of the communication channels.

Cell monitor system for 4G cellular networks

A system that tracks a mobile transmitter within a communication system is disclosed. The mobile transmitter transmits in one or more predetermined communication slots, the communication slots being dynamically assigned by a system node in the communication system. The tracking system includes at least three uplink probes spatially separated from one another, each uplink probe measuring transmissions in each of the communication slots as a function of time. A cell monitor monitors downlink scheduling transmissions from the system node directed to the mobile transmitter, the scheduling transmissions specifying a time and communication slot to be utilized by the mobile transmitter in a subsequent transmission. A correlator receives the measured transmissions and the monitored downlink scheduling transmissions. The correlator uses the monitored downlink scheduling transmissions and the measured transmissions to determine a time at which a transmission from the mobile transmitter was detected at each of the uplink probes.

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Edinburgh, United Kingdom

Colin Michael Arthur