QoS performance analysis on carrier aggregation based LTE-A systems

Author

Zhang, Leiqi ; Wang, Y.Y. ; Huang, Liwen ; Wang, H.L. ; Wang, W.B.

Author_Institution

Wireless Signal Processing and Network Lab, Key laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts & Telecommunications, Beijing, China, 100088

fYear

2009

fDate

7-9 Dec. 2009

Firstpage

253

Lastpage

256

Abstract

Carrier aggregation (CA) is a good solution for third-generation (3G) Long Term Evolution-Advanced (LTE-A) systems to fulfil the system bandwidth (BW) extension requirements and also ensure the backwards compatibility towards 3G LTE. In this paper, we compare the quality of service (QoS) performances of two different multi-user scheduling schemes in CA based LTE-A systems, i.e. separated random user scheduling (SRUS) and joint user scheduling (JUS). The former is simpler but less efficient while the latter is optimal but with higher signalling overhead. Moreover, only one single component carrier (CC) is needed to access for user equipment (UE) in the case of SRUS while all the CCs have to be connected in the case of JUS. Simulation results show that the SRUS scheme is feasible and only little performance loss in continuous and heavy traffic load scenarios with full or Poisson-based finite buffer traffic input.

Keywords

Carrier aggregation; LTE-A systems; QoS performance; multiuser scheduling;

fLanguage

English

Publisher

iet

Conference_Titel

Wireless Mobile and Computing (CCWMC 2009), IET International Communication Conference on

Conference_Location

Shanghai, China

Type

conf

Filename

5522028