Performance Evaluation of Bandwidth and QoS Aware LTE Uplink Scheduler

A Long Term Evolution (LTE) eNodeB Medium Access Control (MAC) uplink scheduler is proposed in this paper for Single Carrier Frequency Division Multiple Access (SC-FDMA) as the uplink transmission scheme. Uplink scheduling algorithms available in literature commonly do not consider all the essential features of the LTE uplink. The proposed scheduler is shown to provide efficient allocation of radio resources to User Equipments (UEs) according to Quality of Service (QoS) of various traffic classes and the instantaneous channel conditions. The scheduler functionality is divided into Time Domain Packet Scheduling (TDPS) and Frequency Domain Packet Scheduling (FDPS). The proposed scheduler also supports multi-bearer UEs. The performance of the proposed scheduler is compared with common TDPS schedulers like Blind Equal Throughput (BET), Maximum Throughput (MT) and Proportional Fair (PF). The results show that the proposed scheduler guarantees provision of QoS to UEs and achieves an acceptable performance in terms of throughput.

[1]  James K. Cavers,et al.  Mobile Channel Characteristics , 2000 .

[2]  Hidetoshi Kayama,et al.  A New Autonomous Component Carrier Selection Scheme for Home eNB in LTE-A System , 2011, 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring).

[3]  Satoshi Konishi,et al.  A Novel TCP-Oriented Multi-Layer Packet Scheduling Algorithm , 2011, 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring).

[4]  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.

[5]  Sami Tabbane,et al.  A fair and power saving uplink scheduling scheme for 3GPP LTE systems , 2011, 2011 International Conference on the Network of the Future.

[6]  Dandan Wang,et al.  Video telephony over downlink LTE systems with/without QoS provisioning , 2011, 34th IEEE Sarnoff Symposium.

[7]  Chao Yang,et al.  A Weighted Proportional Fair scheduling to maximize best-effort service utility in multicell network , 2008, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications.

[8]  Preben E. Mogensen,et al.  Uplink overhead analysis and outage protection for multi-carrier LTE-Advanced systems , 2009, 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications.

[9]  Preben E. Mogensen,et al.  Adaptive Transmission Bandwidth Based Packet Scheduling for LTE Uplink , 2008, 2008 IEEE 68th Vehicular Technology Conference.

[10]  Liljana Gavrilovska,et al.  Novel scheduling algorithms for LTE downlink transmission , 2011, 2011 19thTelecommunications Forum (TELFOR) Proceedings of Papers.

[11]  Preben E. Mogensen,et al.  Channel-aware scheduling algorithms for SC-FDMA in LTE uplink , 2008, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications.

[12]  Preben E. Mogensen,et al.  Search-Tree Based Uplink Channel Aware Packet Scheduling for UTRAN LTE , 2008, VTC Spring 2008 - IEEE Vehicular Technology Conference.