Arris Enterprises LLC

Yair Neugeboren

Humphrey Looney

Kevin Garvey

Stephen Dunning

Christopher T Harrison

Damien Tuffy

Chris Harrison

Ian G Wheelock

Eliezer Baruch

Chris R Zettinger

Systems and methods for providing DOCSIS services and at least one additional services to a cable modem by a Remote MACPHY device (RMD). The additional service is provided using a core configured to have an associated timing lock to the RMD, where the RMD is configured to receive information indicating the absence of the timing lock and use the information to disable the additional service while selectively maintaining the DOCSIS services.

Systems and methods for R-MACPHY partial service support

Systems and methods for measuring the amount of drift of a clock in a remote device relative to a clock in a core, both in a distributed access architecture, by measuring the change in fullness of a dejitter buffer in the remote device that holds data provided from the core.

Method of measuring timing holdover performance in an R-PHY system

Systems and methods for adaptively adjusting a slew rate of a dejitter buffer in a remote device in a distributed access architecture. The slew rate may be adjusted based on measurements of a fullness state of a buffer made over time. The measurements may be used to calculate a frequency offset value between the rate at which data leaves the buffer relative to the rate at which data enters the buffer and/or used to calculate a current working depth of the buffer. The adaptive slew rate adjustments may be based on the frequency offset value and/or the current working depth.

Adaptive video slew rate for video delivery

Systems and methods for providing timing information from a R-MACHPHY device to a video core while the R-MACPHY device receives video data from the video core while operating in asynchronous mode. In some embodiments, the R-MACPHY device may alternately and selectively configure its mode of operation to alternate between synchronous mode and asynchronous mode, and provide the timing information to the video core when it switches to asynchronous mode.

Partial video async support using R-MACPHY device

Systems and methods for regaining phase synchronization between a CMTS core and an RPD, where the phase synchronization is regained over repeated temporal periods preferably divided between a first interval having a frequency adjustment of a first magnitude and a second interval having a frequency adjustment of a second magnitude.

Systems and methods for large phase correction in R-PHY network architectures

Devices and methods that receive timing information from at least one source clock in a network that exchanges data packets conforming to the Internet Protocol. The timing information preferably includes a time-to-live (TTL) field in a packet header used to: select a source of timing information; configure a PTP port, or both.

Packet timing system with improved hop count

In some embodiments, a method is performed after locking a first clock of a computing device to synchronize with a second clock associated with a first device where a difference between the first clock and the second clock is determined during the locking. The method measures a path delay to a second device based on sending messages including first timestamps of the first clock to the second device and receiving messages including second timestamps of a third clock from the second device. A third message is sent to the second device that includes a third timestamp of the first clock that has been locked to the second clock, wherein the third message includes the path delay, and wherein the third timestamp and the path delay allow the second device to analyze a lock quality of the first clock to the second clock based on a time of the third clock.

Method of remotely monitoring the timing performance of a PTP slave

In one embodiment, a method receives a first time from a network device. The first time is derived from a first timing source in a first domain. The method receives a second time in a second domain from a second timing source. A difference time value is calculated between the first time and the second time. The method then sends the difference time value to the network device where the network device uses the difference time value to send a delay value to other computing devices to synchronize timing of the other computing devices in the second domain. The other computing devices are configured to synchronize the respective time using the delay value with mobile network devices to allow timing synchronization between the mobile network devices.

Timing synchronization over cable networks

Systems and methods for retaining synchronization between a CMTS core and an RPD when the RPD loses synchronization to a timing grandmaster, where both the core and the RPD are configured for individual synchronization in a slave configuration to the timing grandmaster, by operating the core as a boundary clock that sends timing information to the RPD.

Growing community of inventors

Netanya, Israel

Yair Neugeboren