Novel scheduling algorithms for LTE downlink transmission

Long Term Evolution (LTE) is the new standard specified by 3GPP on the way towards the fourth generation mobile network. The LTE introduces enhanced data link mechanisms to support successful implementation of new data services across the network. The incorporated scheduling mechanisms can significantly contribute to this goal. In this paper novel scheduling algorithms are presented and compared to the Max C/I Downlink scheduler for LTE, which is characterized by high data rates at cell level, but poor fairness. The newly developed algorithms allow fair distribution of available resources. Simulation results presented in the paper show that the implementation of these newly developed algorithms enables improvement of the overall system capacity and user level performances.

[1]  Ashwin Sampath,et al.  Downlink Scheduling for Multiclass Traffic in LTE , 2009, EURASIP J. Wirel. Commun. Netw..

[2]  Markus Rupp,et al.  Simulating the Long Term Evolution physical layer , 2009, 2009 17th European Signal Processing Conference.

[3]  Jonas Eriksson Providing Quality of Service for Streaming Applications in Evolved 3G Networks , 2004 .

[4]  Cyril Leung,et al.  Multiuser Scheduling on the Downlink of an LTE Cellular System , 2008, J. Electr. Comput. Eng..

[5]  Erik Eriksson Channel Quality Information Reporting and Channel Quality Dependent Scheduling in LTE , 2007 .

[6]  Preben E. Mogensen,et al.  Performance of Downlink Frequency Domain Packet Scheduling for the UTRAN Long Term Evolution , 2006, 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications.

[7]  Stefania Sesia,et al.  LTE - The UMTS Long Term Evolution, Second Edition , 2011 .

[8]  Antti Toskala,et al.  LTE for UMTS - OFDMA and SC-FDMA Based Radio Access , 2009 .

[9]  Erik Dahlman,et al.  3G Evolution: HSPA and LTE for Mobile Broadband , 2007 .

[10]  Farooq Khan,et al.  LTE for 4G Mobile Broadband: Air Interface Technologies and Performance , 2009 .

[11]  Jonas Öberg Evaluation of scheduling algorithms for a web browsing service in WCDMA high speed downlink shared channel , 2002 .

[12]  M. Gidlund,et al.  Scheduling Algorithms for 3GPP Long-Term Evolution Systems: From a Quality of Service Perspective , 2008, 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications.

[13]  Henning Wiemann,et al.  The LTE link-layer design , 2009, IEEE Communications Magazine.