We focus on the downlink CoMP scheduling technologies of LTE-A. The defects of single CoMP scheduling mode with different system loads are presented. Two scheduling strategies for improving cell throughput are presented. The impact of system load on the performance of different scheduling strategies is studied by performing theoretical analysis and system-level simulation followed by the proposed strategy. The results show that the performance of CoMP technologies is good for different loads and that the proposed optimized scheduling can adapt to them with low complexity, which can lead to a further performance improvement.
ZHANG Jin-Zhu
,
HONG Pei-Lin
,
XUE Kai-Ping
. Load adaptive CoMP scheduling strategies[J]. Journal of University of Chinese Academy of Sciences, 2012
, 29(5)
: 644
-651
.
DOI: 10.7523/j.issn.2095-6134.2012.5.010
[1] 3GPP TR 36.814.Further advancements for E-UTRA physical layer aspects (Release 9) V1.5.2[S].2009:1.
[2] 3GPP TR 36.913.Requirements for further advancements for EUTRA (LTE-advanced) (Release 8) V8.0.1[S].2009:3.
[3] Kusashima N,Garcia I D,Sakaguchi K,et al. Fractional base station cooperation cellular network //Proceedings of IEEE ICICS 2009. Macau Fisherman's Wharf,Macau,December 8-10,2009:1-5.
[4] Rahman M,Yanikomeroglu H, Wong W.Interference avoidance with dynamic inter-cell coordination for downlink LTE system //Proceedings of IEEE WCNC 2009. Budapest,Hungary,April 5-8,2009:1-6.
[5] Liang X, Yamamoto K,Murata H,et al.Adaptive base station cooperation and subchannel reallocation at cell edge in cellular networks with fractional frequency reuse //Proceedings of 2009 IEEE 20th Personal,Indoor and Mobile Radio Communications Symposium.Tokyo,Japan,September 13-16,2009:2235-2239.
[6] Brueck S, Zhao L,Giese J,et al.Centralized scheduling for joint transmission coordinated multi-point in LTE-advanced //Proceedings of IEEE 2010 International ITG Workshop on Smart Antennas. Bremen,Germany,February 23-24,2010:177-184.
[7] 3GPP TS 36.300.Evolved universal terrestrial radio access (E-UTRA) and evolved universal terrestrial radio access network (E-UTRAN);Overall description;Stage 2(Release 10) V10.1.0[S].2010:9.
[8] Fujitsu,different types of DL CoMP transmission for LTE-A .(2009) .http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_58/Docs/R1-093156.zip.
[9] Nortel,cell clustering for CoMP transmission/reception .(2009) .http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_55/Docs/R1-084464.zip.
[10] Mogensen P,Wei N,Kovacs I Z,et al.LTE capacity compared to the shannon bound //Proceedings of IEEE 65th Vehicular Technology Conference.Dublin,Ireland,April 22-25,2007:1234-1238.
[11] 3GPP TR 36.942.Radio frequency (RF) system scenarios(Release 9) V9.0.1[S].2010.4.
[12] Jain R, Chiu D, Hawe W. A quantitative measure of fairness and discrimination for resource allocation in shared computer systems.DEC research report TR-301 .(1984.9) . http://www.cs.wustl.edu/~jain/papers/ftp/fairness.pdf.
