Patent
Clock synchronization using multiple network paths
Tal Mizrahi,Alexander Shpiner +1 more
TLDR
In this article, a clock synchronization module is configured to determine a plurality of path time data sets corresponding to the plurality of different communication paths based on signals received from the master clock via the plurality.Abstract:
In a network device communicatively coupled to a master clock via a plurality of different communication paths, a clock synchronization module is configured to determine a plurality of path time data sets corresponding to the plurality of different communication paths based on signals received from the master clock via the plurality of different communication paths between the network device and the master clock. A clock module is configured to determine a time of day as a function of the plurality of path time data sets.read more
Citations
More filters
Patent
Real-time highly accurate network latency measurement with low generated traffic or data requirements
Kevin Formby,Gil Kaufman +1 more
TL;DR: In this article, an electronic device that receives data packets moving across a network data point and compares their time of arrival with a timestamp stored within a data packet is used to calculate the average latency.
Patent
System for establishing and maintaining a clock reference indicating one-way latency in a data network
Kjell Hansson,Olof Hagsand +1 more
TL;DR: In this article, a method for indicating one-way latency in a data network, with continuous clock synchronization, between first and second node having clocks that are not synchronized with each other includes a continuous synchronization session and a measurement session.
Patent
Time adjustment using time-to-live values
Keith E. Holleman,Murthy Garikiparthi,Meenakshi S. Subramanian,DeviPrasad Natesan,Philip Kruzinski +4 more
TL;DR: In this paper, the authors propose a timing module that determines a time adjustment based at least in part on the determination that the first and second TTL values are different, and applies the time adjustment to update the time of the network device.
Patent
Schedule-Based Coordination of Audio Sources
Yu Gaylord,Stupp Steven +1 more
TL;DR: In this paper, an audio/video (A/V) hub that coordinates playback of audio content is described, in which the A/V hub calculates current time offsets between clocks in electronic devices and a clock in the AU hub based on differences between receive times when frames are received from electronic devices, and expected transmit times of the frames.
Patent
Method, device and system for clock synchronization
TL;DR: In this paper, a method, a device and a system for clock synchronization are provided, which includes: under a first transfer mode, generating a first receiving timestamp by using a first link, and acquiring a first transmitting timestamp of a master clock device; under a second transfer model, generating an additional receiving timestamp using the first link.
References
More filters
Journal ArticleDOI
Internet time synchronization: the network time protocol
TL;DR: The NTP synchronization system is described, along with performance data which show that timekeeping accuracy throughout most portions of the Internet can be ordinarily maintained to within a few milliseconds, even in cases of failure or disruption of clocks, time servers, or networks.
Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems
Kang B. Lee,J Eldson +1 more
TL;DR: A protocol is provided in this standard that enables precise synchronization of clocks in measurement and control systems implemented with technologies such as network communication, local computing, and distributed objects.
Journal ArticleDOI
End-to-end internet packet dynamics
TL;DR: The prevalence of unusual network events such as out-of-order delivery and packet replication are characterized and a robust receiver-based algorithm for estimating "bottleneck bandwidth" is discussed that addresses deficiencies discovered in techniques based on "packet pair".
Book
Sizing router buffers
TL;DR: It is shown that a link with n flows requires no more than B = (overlineRTT x C) √n, for long-lived or short-lived TCP flows, because of the large number of flows multiplexed together on a single backbone link.
Network Time Protocol Version 4: Protocol and Algorithms Specification
TL;DR: NTP version 4 (NTPv4), which is backwards compatible with NTP version 3 (N TPv3), described in RFC 1305, as well as previous versions of the protocol, are described.