An improving strategy for LTE downlink scheduling algorithms based on QoS requirement

LTE is an all IP network. The scheduling in its downlink channels is a key problem. Although many algorithms have been designed and analyzed, the QoS for the users in poor channel conditions are not enough to be ensured sometimes. We design a method to enhance the capacity of the system, which is a modifying strategy available for most existing algorithms. Our intuition is to allocate more resources to the users in poorer channel conditions without declining the QoS of the users in better channel. Simulations show that our strategy can satisfy the QoS for more users.

[1]  Kumbesan Sandrasegaran,et al.  Performance of well known packet scheduling algorithms in the downlink 3GPP LTE system , 2009, 2009 IEEE 9th Malaysia International Conference on Communications (MICC).

[2]  Giuseppe Piro,et al.  Downlink Packet Scheduling in LTE Cellular Networks: Key Design Issues and a Survey , 2013, IEEE Communications Surveys & Tutorials.

[3]  K. Sandrasegaran,et al.  Performance analysis of EXP/PF and M-LWDF in downlink 3GPP LTE system , 2009, 2009 First Asian Himalayas International Conference on Internet.

[4]  Jong-Hun Rhee,et al.  Scheduling of real/non-real time services: adaptive EXP/PF algorithm , 2003, The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..

[5]  Alexander Golitschek Edler von Elbwart,et al.  Fairness and throughput analysis for generalized proportional fair frequency scheduling in OFDMA , 2005, 2005 IEEE 61st Vehicular Technology Conference.

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

[7]  Hui Liu,et al.  OFDM-Based Broadband Wireless Networks – Design and Optimization , 2005 .

[8]  Preben E. Mogensen,et al.  QoS Oriented Time and Frequency Domain Packet Schedulers for The UTRAN Long Term Evolution , 2008, VTC Spring 2008 - IEEE Vehicular Technology Conference.

[9]  Chan Zhou,et al.  Throughput Maximization under Rate Requirements for the OFDMA Downlink Channel with Limited Feedback , 2008, EURASIP J. Wirel. Commun. Netw..

[10]  Matthew Andrews,et al.  Providing quality of service over a shared wireless link , 2001, IEEE Commun. Mag..