NDLI: Graph based automatic centralized PCI assignment in LTE

Content Provider	IEEE Xplore Digital Library
Author	Yanguang Liu Wenjing Li Heng Zhang Weihao Lu
Copyright Year	2010
Description	Author affiliation: State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, China (Yanguang Liu; Wenjing Li; Heng Zhang; Weihao Lu)
Abstract	Physical Cell Identity (PCI) is cell identifier on the physical layer which can be used to create synchronization signals. There is a mapping between synchronization signals and physical cell identity, and then User Equipment (UE) can search cells through this mapping. Traditionally, PCI was configured during network planning process. While with 3G Long Term Evolution (LTE) has been prevalent in the future network, auto configuration of radio parameters has become a necessity. This paper proposed an automatic centralized PCI assignment mechanism using OAM as central server to collect cell information of the network, and create an abstract graph using information given which reflects the relationship in real-world network. After that, an enhanced graph-coloring algorithm which can greatly reduce time complexity while keeping a high PCI utility ratio was provided to create a collision and confusion free PCI for the new cell.
Starting Page	919
Ending Page	921
File Size	784691
Page Count	3
File Format	PDF
ISBN	9781424477548
ISSN	15301346
e-ISBN	9781424477555
DOI	10.1109/ISCC.2010.5546812
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-22
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resource management Antennas graph-coloring physical cell identity LTE
Content Type	Text
Resource Type	Article
Subject	Signal Processing Mathematics Computer Networks and Communications Computer Science Applications Software

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