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Improved algorithms for synchronizing computer network clocks

D.L. Mills
1995 IEEE/ACM Transactions on Networking  
The Network Time Protocol (NTP) is widely deployed in the Internet to synchronize computer clocks to each other and to international standards via telephone modem, radio and satellite.  ...  This paper describes specific improvements developed for NTP Version 3 which have resulted in increased accuracy, stability and reliability in both local-area and wide-area networks.  ...  In order that multiple distributed computers sharing a network can synchronize their operations with each other, a synchronization protocol is used to exchange time information and synchronize the clocks  ... 
doi:10.1109/90.392384 fatcat:jxh74f7tbbeufml2mwefr7nyw4

Improved algorithms for synchronizing computer network clocks

David L. Mills
1994 Proceedings of the conference on Communications architectures, protocols and applications - SIGCOMM '94  
The Network Time Protocol (NTP) is widely deployed in the Internet to synchronize computer clocks to each other and to international standards via telephone modem, radio and satellite.  ...  This paper describes specific improvements developed for NTP Version 3 which have resulted in increased accuracy, stability and reliability in both local-area and wide-area networks.  ...  In order that multiple distributed computers sharing a network can synchronize their operations with each other, a synchronization protocol is used to exchange time information and synchronize the clocks  ... 
doi:10.1145/190314.190343 dblp:conf/sigcomm/Mills94 fatcat:xjgbn5f3ovanjd3ni2kf6bbrmi

Improved algorithms for synchronizing computer network clocks

David L. Mills
1994 Computer communication review  
The Network Time Protocol (NTP) is widely deployed in the Internet to synchronize computer clocks to each other and to international standards via telephone modem, radio and satellite.  ...  This paper describes specific improvements developed for NTP Version 3 which have resulted in increased accuracy, stability and reliability in both local-area and wide-area networks.  ...  In order that multiple distributed computers sharing a network can synchronize their operations with each other, a synchronization protocol is used to exchange time information and synchronize the clocks  ... 
doi:10.1145/190809.190343 fatcat:7ixtrq6hwff3zngih4jvxxr25q

Improved Algorithms for Synchronizing Computer Network Clocks Manuscript received December 6, 1994; approved by IEEE/ACM Transactions on Networking Editor R. Guerin. This work was supported by the Advanced Research Projects Agency under NASA Ames Research Center Contract NAG 2-638, the National Science Foundation under Grant NCR-93-01002, and the U.S. Navy Surface Weapons Center under Northeastern Center for Engineering Education Contract A30327-93.IEEE Log Number 9412272 [chapter]

David L. Mills
2002 Readings in Multimedia Computing and Networking  
The Network Time Protocol (NTP) is widely deployed in the Internet to synchronize computer clocks to each other and to international standards via telephone modem, radio and satellite.  ...  This paper describes specific improvements developed for NTP Version 3 which have resulted in increased accuracy, stability and reliability in both local-area and wide-area networks.  ...  In order that multiple distributed computers sharing a network can synchronize their operations with each other, a synchronization protocol is used to exchange time information and synchronize the clocks  ... 
doi:10.1016/b978-155860651-7/50153-4 fatcat:siyclgk5uvex3jn53yib4v5equ

Improvement of Physical Clock Synchronization Algorithm by Two-Level Synchronization

M. Praveen Kumar Reddy, K. Ashwin Kumar, S. Rajesh Kumar, RA.K. Saravanaguru
2012 INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY  
Synchronization of the clocks is one of the essential thing for many applications in distributed systems.  ...  Clock synchronization is very important because they improve the performance and reliability of distributed systems.  ...  These algorithms are completely based on reliable connected networks which will run in rounds for resynchronizing to correct the clock drift.  ... 
doi:10.24297/ijct.v11i6.3039 fatcat:3t7in76zx5en5g3dcig3etenw4

Edge Computing-Based ERBS Time Synchronization Algorithm in WSNs

Xianbo Sun, Yixin Su, Yong Huang, Jianjun Tan, Jinqiao Yi, Tao Hu, Li Zhu, Shaohua Wan
2020 Wireless Communications and Mobile Computing  
This paper puts forward an improved energy-efficient reference broadcast synchronization algorithm (ERBS).  ...  Due to the random distribution of nodes, in order to improve the transmission efficiency and reduce the computational load of the coordinator, the node processor needs to the use edge computing for preliminary  ...  Zeng et al. proposed a fast search algorithm for the optimal pricing strategy of vehicle edge computing server based on the genetic algorithm by analyzing the interaction between the vehicle and edge computing  ... 
doi:10.1155/2020/8840367 fatcat:bgwqq3tuovannmp4rliqgemiuq

Performance Analysis of DTSA in Distributed Network

Vijay Masne, Urmila Shrawankar
2013 International Journal of Computer Applications  
Although the some of the existing algorithms for time synchronization depend on sending and receiving messages from different system.  ...  The paper presented in approach towards Delay Tolerant Synchronization Algorithm (DTSA) which is combination of Network Time Protocol (NTP) and Delay Tolerant Protocol (DTP) which synchronizes nodes in  ...  In this work to accurately synchronize the clocks the Network Time Protocol (NTP) algorithm is used, which is a networking protocol for clock synchronization between computer systems over packet-switched  ... 
doi:10.5120/13008-0042 fatcat:vyzpnmbd5zcqzds3u53ph2oiqm

Research Overview of Clock Synchronization in Wireless Sensor Network

Hua Yuting, Xin Yu, Lu Kangli, Wang shenghui
2018 Journal of Computer Science Applications and Information Technology  
It is concluded that the deterministic causes of clock out-ofsynchronization are the effects of offset and drift rate. Five classic methods of improved synchronization method for comparative study.  ...  Clock synchronization is the key technology of Wireless Sensor Networks, since inaccurate clocks have a significant impact on network accuracy and security.  ...  In 1999, Network Time Protocol (NTP) and direct connection time transmission were widely used as two important methods for the synchronization of computer clocks.  ... 
doi:10.15226/2474-9257/3/1/00128 fatcat:atjy4zs6qvgtjai3octbbx2ytq

Improved Time-Synchronization Algorithm Based on Direct Compensation of Disturbance Effects

Yeoung-Duk Seo, Kyou Jung Son, Gi-Sung An, Kyung Deok Nam, Tae Gyu Chang, Sang-Hee Kang
2019 Sensors  
Computer simulations are performed to verify the performance of the proposed time synchronization algorithm by applying the various types of disturbances, including network noise and clock drift.  ...  In this paper, an improved time-synchronization algorithm is proposed.  ...  Conclusions In this paper, an improved PTP time synchronization algorithm is proposed.  ... 
doi:10.3390/s19163499 fatcat:2nyzaodw5bef5dc3hyec2mmny4

Time Synchronization Algorithm for Wireless Sensor Networks Based on Frequency Offset Estimation

Shaojun Yu, Li Lin, Yujian Wang, Xingyuan Chen
2018 International Journal of Online Engineering (iJOE)  
designed for wireless sensor networks based on frequency offset estimation.  ...  Among them, the CSMS algorithm was mainly divided into two stages: level discovery phase, </span><span lang="EN-US">which was used</span><span lang="EN-US"> for generating a layered structure of network  ...  Liao and Barooah as stated in [7] designed an algorithm for accurate distributed time synchronization in mobile wireless sensor networks.  ... 
doi:10.3991/ijoe.v14i06.8699 fatcat:g72rc2oeavexpjnsodrnkwbuj4

CoSiWiNeT: A Clock Synchronization Algorithm for Wide Area IIoT Network

Rahul Nandkumar Gore, Elena Lisova, Johan Åkerberg, Mats Björkman
2021 Applied Sciences  
The adequate performance of remote applications depends on the use of a clock synchronization scheme. Packet delay variations adversely impact the clock synchronization performance.  ...  As a software–based network time protocol (NTP) overcomes these challenges but lacks accuracy, the authors propose a software–based clock synchronization method, called CoSiWiNeT, based on the random sample  ...  The contributions of this paper are as follows: (1) A scalable and precise clock synchronization algorithm based on RANSAC for heterogeneous WAN that provides improved synchronization over a degrading  ... 
doi:10.3390/app112411985 fatcat:niyvrrfbxbc2vmceo4mmkfwfn4

LazySync: A New Synchronization Scheme for Distributed Simulation of Sensor Networks [chapter]

Zhong-Yi Jin, Rajesh Gupta
2009 Lecture Notes in Computer Science  
In this paper, we present LazySync, a novel conservative synchronization scheme that can significantly reduce such overheads by minimizing the number of clock synchronizations during simulations.  ...  To meet the demands for high simulation fidelity and speed, parallel and distributed simulation techniques are widely used in building wireless sensor network simulators.  ...  For distributed simulations on multiple computers, the number of non-waiting nodes on each computer can be exchanged as part of clock synchronization messages sent between computers.  ... 
doi:10.1007/978-3-642-02085-8_8 fatcat:eqdsc7dzmvb2zatsej5n4mdspm

Time Synchronization for Mobile Underwater Sensor Networks

Ying Guo, Yutao Liu
2013 Journal of Networks  
TSHL [15] is the first time synchronization algorithm designed for high latency networks specifically.  ...  INTRODUCTION Time synchronization is an important issue for many distributed applications, especially for sensor networks [1].  ...  TSHL [15] is the first time synchronization protocol designed for high latency networks. It performs linear regression over timing information to compute the clock skew.  ... 
doi:10.4304/jnw.8.1.116-123 fatcat:ck27ucwmgnfqfjp3r745jhwmwi

Time synchronization in ad hoc networks

Kay Römer
2001 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing - MobiHoc '01  
However, due to the characteristics of sparse ad hoc networks, classical clock synchronization algorithms are not applicable in this setting.  ...  We present a time synchronization scheme that is appropriate for sparse ad hoc networks.  ...  However, the frequent temporary network partitions in sparse ad hoc networks are a serious problem for classical clock synchronization algorithms.  ... 
doi:10.1145/501436.501440 fatcat:s3wdc42rpvbhdfaobpmerlcr3q

Time synchronization in ad hoc networks

Kay Römer
2001 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing - MobiHoc '01  
However, due to the characteristics of sparse ad hoc networks, classical clock synchronization algorithms are not applicable in this setting.  ...  We present a time synchronization scheme that is appropriate for sparse ad hoc networks.  ...  However, the frequent temporary network partitions in sparse ad hoc networks are a serious problem for classical clock synchronization algorithms.  ... 
doi:10.1145/501416.501440 dblp:conf/mobihoc/Romer01 fatcat:zij7owyfczhnpgsb2rjg422wm4
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