Mobile Backhaul Optical Access Networks for Coordinated Multipoint Transmission/Reception (CoMP) Techniques in Future Cellular Systems

Changsoon CHOI  Thorsten BIERMANN  Qing WEI  Kazuyuki KOZU  Masami YABUSAKI  

IEICE TRANSACTIONS on Electronics   Vol.E96-C    No.2    pp.147-155
Publication Date: 2013/02/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.147
Print ISSN: 0916-8516
Type of Manuscript: Special Section INVITED PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Photonics Technology)
mobile backhaul access networks,  wavelength-division multiplexing passive optical networks (WDM-PON),  coordinated multi-points (CoMP),  X2 interface,  multicasting,  

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This paper describes mobile backhaul optical access network designs for future cellular systems, in particular, for those systems that exploit coordinated multipoints (CoMP) transmission/reception techniques. Wavelength-division-multiplexing passive optical networks (WDM-PON) are primarily considered and two proposals to enhance mobile backhaul capability of WDM-PONs for CoMP are presented. One is physical X2 links that support dedicated low latency and high capacity data exchange between base stations (BSs). The other is multicasting in WDM-PONs. It effectively reduces data/control transmission time from central node to multiple BSs joining CoMP. Evaluation results verify that the proposed X2 links and the multicasting enable more BSs to join CoMP by enhancing the mobile backhaul capability, which results in improved service quality for users.