Paper Info
Title
Study on Flexible TTI Scheduling for LAA Systems
Abstract
In this paper, we investigate the designation of transmission time intervals (TTls) in a LAA system. With considerations of backward compatibility and feasibility, two shortened TTI schemes are proposed to increase the flexibility of frame structure in the unlicensed spectrum. Additionally, the advantage of the designed shortened TTI schemes on the DL transmission performance is also studied for different cases of packet size. More specially, it is found that the system using the proposed shortened TTI schemes is able to reach the start point of a transmission more quickly when sending small packets. Therefore, the performance of small packets can be improved. Differently, the proposed shortened TTI schemes are able to reduce the padding time when transmitting large packets, so that the performance, especially the utilization of the maximum channel occupancy time (MCOT), can be improved. The simulation results verify that remarkable performance gain can be achieved under the proposed shortened TTI schemes. In addition, based on the analysis in this paper, it is suggested that shortened TTI should be included in the future designation of LAA systems in order to achieve better performance.
Year
DOI
Venue
2018
10.1109/ISWCS.2018.8491044
2018 15th International Symposium on Wireless Communication Systems (ISWCS)
Keywords
Field
DocType
LAA,sTTI,packet size,MCOT efficiency
Wireless,Computer science,Scheduling (computing),Network packet,Real-time computing,Bandwidth (signal processing),Transmission time,Padding,Backward compatibility,Telecommunications link
Conference
ISSN
ISBN
Citations 
2154-0217
978-1-5386-5006-6
0
PageRank 
References 
Authors
0.34
1
7
Name
Order
Citations
PageRank
Lulu Wang16924.91
Yuehong Gao27915.28
Yangming Dong300.34
Zhidu Li4128.01
Zhening Zhang500.68
Xin Zhang640847.83
Xiaofeng Liu700.34