User satisfaction based joint user selection and beamforming in TD-LTE-A downlink
Authors: 
Xuanli Wu, Nannan Fu, Di Lin, Wanjun ZhaoAuthors Info & Claims
Xuanli Wu, Nannan Fu, Di Lin, Wanjun ZhaoAuthors Info & ClaimsPages 153 - 158
Abstract
In TD-LTE-A downlink, user selection is a key technique when the number of users exceeds the amount could be supported by eNodeB at one Transmission Time Interval (TTI). In order to improve the fairness of different users and consider the difference of user traffic in the process of user selection, a Signal to Leakage and Noise-Ratio (SLNR) beamforming based joint user selection and beamforming algorithm is proposed in this paper. Since in TD-LTE-A systems, the traffic can be classified into two types: Guaranteed Bit Rate (GBR) traffic and Non-Guaranteed Bit Rate (Non-GBR) traffic, user satisfaction for GBR and Non-GBR traffic are defined at first, and then, based on the difference of traffic, a user satisfaction based joint user selection and beamforming algorithm is proposed. Simulation results show that compared with conventionally used joint user selection and beamforming algorithm, user satisfaction of GBR traffic can be increased by 300% due to the fact that GBR traffic always has higher priority than Non-GBR traffic. Moreover, user fairness can also be improved in terms of the variance of user satisfaction.
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Index Terms
- User satisfaction based joint user selection and beamforming in TD-LTE-A downlink
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Published In
September 2014
352 pages
ISBN:9781450330305
DOI:10.1145/2641798
- General Chairs:
- Ravi Prakash,
- Azzedine Boukerche,
- Program Chairs:
- Cheng Li,
- Falko Dressler
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Published: 21 September 2014
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- Ministry of Science and Technology of the People's Republic of China
- Next Generation Wireless Mobile Communication Network of China
- National Natural Science Foundation of China
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MSWiM'14: 17th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
September 21 - 26, 2014
QC, Montreal, Canada
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