DocumentCode :
3074593
Title :
A New Distributed Approach for Achieving Clock Synchronization in Heterogeneous Networks
Author :
Mehrpouyan, Hani ; Blostein, Steven D. ; Svensson, Tommy
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Gothenburg, Sweden
fYear :
2011
fDate :
5-9 Dec. 2011
Firstpage :
1
Lastpage :
5
Abstract :
Heterogeneous networks have the potential to improve coverage, throughput, and energy efficiency of wireless networks through the use of specialized cellular structures, in particular femtocells and macrocells. However, to reduce interference between different cells, ensure smooth hand-offs from cell to cell, and achieve seamless operation the overall network needs to be synchronized. In this paper a new distributed clock synchronization scheme for heterogeneous networks is proposed that employs the clock drift ratio (CDR) information available at user-equipments (UEs) to achieve synchronization between non-interacting femtocells and macrocells. Simulation results show that the proposed scheme can significantly reduce the clock drift between macrocells and femtocells and result in timing synchronization throughout the network without introducing significant overhead.
Keywords :
cellular arrays; femtocellular radio; mobility management (mobile radio); radiofrequency interference; synchronisation; CDR information; cellular structure; clock drift ratio information; distributed clock synchronization; energy efficiency; heterogeneous network; noninteracting femtocell; noninteracting macrocell; smooth hand-off; timing synchronization; user-equipment; wireless network; Accuracy; Estimation; Femtocells; Macrocell networks; Peer to peer computing; Synchronization;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Conference_Location :
Houston, TX, USA
ISSN :
1930-529X
Print_ISBN :
978-1-4244-9266-4
Electronic_ISBN :
1930-529X
Type :
conf
DOI :
10.1109/GLOCOM.2011.6133859
Filename :
6133859
Link To Document :
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