DocumentCode :
692288
Title :
Local mobility anchoring for seamless handover in coordinated small cells
Author :
Balakrishnan, Ranjith ; Akyildiz, I.F.
Author_Institution :
Broadband Wireless Networking Lab., Georgia Inst. of Technol., Atlanta, GA, USA
fYear :
2013
fDate :
9-13 Dec. 2013
Firstpage :
4489
Lastpage :
4494
Abstract :
Small cells are redefining the traditional cellular system concepts. Coordination among small cells offers several benefits in terms of utilizing existing network infrastructure to support advanced interference management, mobility management as well as self-organizing (SON) functions. In this work, the problem of handover management is studied. The coordination between small cells is generally not considered in many existing handover management solutions resulting in increased handover cost, session interruption time and core network overload. To this end, a novel local anchor-based architecture for coordinated small cells is proposed in this paper based on which three handover schemes are presented. A mathematical framework is developed to analyze the performance of the proposed schemes and Markov models are utilized to obtain closed-form expressions for key handover parameters including handover cost and session interruption time. Numerical results show savings of about 60% in the signaling cost, about 50% in the data forwarding cost and more importantly about 80% in the handover interruption time compared to existing schemes based on coordinated small cells.
Keywords :
Markov processes; mathematical analysis; mobility management (mobile radio); radiofrequency interference; Markov models; SON functions; cellular system; closed-form expressions; coordinated small cells; core network overload; handover management; local mobility anchoring; mathematical framework; mobility management; seamless handover; self-organizing; session interruption time; support advanced interference management; Computer architecture; Handover; Interrupters; Markov processes; Mathematical model; Switches;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Communications Conference (GLOBECOM), 2013 IEEE
Conference_Location :
Atlanta, GA
Type :
conf
DOI :
10.1109/GLOCOMW.2013.6855658
Filename :
6855658
Link To Document :
بازگشت