Timing and Synchronization with Propagation Delay Symmetry and Originated Slave Clock Frequency for Ubiquitous Computing

Author

Kang, Sunghwan ; Ahn, Jeong-Gyun ; Kwon, Yong-Sik ; Eom, Jong-Hoon ; Kim, Sung-ho

Author_Institution

Grad. Sch. of Electr. Eng. & Comput. Sci., Kyungpook Nat. Univ., Daegu, South Korea

fYear

2010

fDate

15-18 Feb. 2010

Firstpage

764

Lastpage

769

Abstract

Time and frequency alignment is critical for ensuring QoS for application such as voice, real-time video, wireless hand-off, and data over a converged access medium. To satisfy the accuracy of time synchronization, both adjusting Communication path asymmetry and ratio of frequency between the time-aware systems are important. Network Time Protocol (NTP) is not satisfies time-sensitive applications. IEEE 1588 Precision Time Protocol (PTP) and IEEE 802.1AS don´ t calculate the communication path asymmetry. We propose the Single-TimeSync frame for reducing the number of control frames, adjusting propagation delay asymmetry and ratio of frequency originated with slave time-aware station clock. We simulate with base model in OPNET.

Keywords

protocols; quality of service; ubiquitous computing; IEEE 1588 precision time protocol; IEEE 802.1AS; QoS; Single-TimeSync frame; frequency alignment; network time protocol; originated slave clock frequency; propagation delay symmetry; slave time-aware station clock; time alignment; time synchronization; ubiquitous computing; Access protocols; Clocks; Consumer electronics; Frequency synchronization; Home automation; Jitter; Propagation delay; Quality of service; Timing; Ubiquitous computing; IEEE 802.1AS; clock frequency ratio adjustment; propagation delay symmetry; timing and synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Complex, Intelligent and Software Intensive Systems (CISIS), 2010 International Conference on

Conference_Location

Krakow

Print_ISBN

978-1-4244-5917-9

Type

conf

DOI

10.1109/CISIS.2010.40

Filename

5447508