期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2018
卷号：96
期号：18
出版社：Journal of Theoretical and Applied
摘要：Carrier Aggregation (CA) and Multi-Input Multi-Output are a promising techniques which invented by 3GPP to support next generation of all IP mobile networks �5G Long Term Evolution-Advanced (LTE-A) network� with extreme virtual bandwidths, for providing unprecedented speed of transmission rate and minimal latency. To the best of our knowledge, an efficient user-level QoS provisioning for multi-services multi-users deployment scenario is of vital importance in 5G LTE-A systems. One of the main challenges to meet the user level Quality-of-Services (QoS) demands for diversified services �Real-Time (RT) and Non-Real-Time (NRT) traffic� is to offer robust and suitable resource scheduling algorithm. However, different MIMO system schemes have various delays in the feedback reporting, resulting lead degradation in QoS performance where accurate feedback is difficult to achieve. In this paper, authors investigate the impact of divers MIMO schemes on the proposed QoS based Independent Carrier Scheduling (QoS-ICS) algorithm in order to find the optimum transmission mode which is exploited for guaranteeing the user QoS performance among different users. Firstly, the QoS-ICS exploits the round robin with service concept which assigns the CCs among users equally based on the user�s service. Secondly, for PRBs-Scheduler, the adopted user-level QoS aware packet scheduling relies on different service utility factor was computed in order to achieve QoS performance. Furthermore in this paper, two different MIMO system schemes are considered, Open Loop Spatial Multiplexing (OLSM) and Closed Loop Spatial Multiplexing (CLSM). Simulation results reveal that the proposed QoS-ICS scheme has achieve the QoS requirements for real-time users and meets the user�s throughput demands of NRT streaming video, especially in CLSM transmission scheme when compared with conventional ICS algorithm.
关键词：Carrier Aggregation (CA); MIMO Schemes; 5G; LTE-Advanced; ICS; QoS-ICS; Service Utility Factor; OLSM; CLSM.
