Paper Info
Title
Uplink performance enhancement for LTE licensed-assisted access to unlicensed spectrum.
Abstract
Licensed-assisted access (LAA) is a new operation mode of carrier aggregation for the Long Term Evolution Advanced systems to transmit data on both licensed and unlicensed spectrum. To deal with the issue of co-existence with WiFi systems, LAA is required to perform listen-before-talk, which can significantly impact its resource utilization. In this paper, the concept called multi-subframe scheduling (MSS) which can enhance the performance of uplink LAA data transmission is presented. MSS allows a user equipment to have multiple channel sensing opportunities and/or to transmit data continuously for multiple subframes. Both scheduling-based and random access schemes are evaluated and compared. The optimum configuration of MSS which maximizes resource utilization of LAA is also provided. Numerical results show that MSS improves resource utilization on the unlicensed spectrum significantly.
Year
DOI
Venue
2018
10.1186/s13638-018-1030-8
EURASIP J. Wireless Comm. and Networking
Keywords
Field
DocType
Licensed-assisted access,Resource utilization,Listen-before-talk,Multi-subframe scheduling,Random access
Spectrum management,Performance enhancement,Data transmission,Scheduling (computing),Computer science,Communication channel,Computer network,User equipment,Telecommunications link,Random access
Journal
Volume
Issue
ISSN
2018
1
1687-1499
Citations 
PageRank 
References 
0
0.34
8
Authors
2
Name
Order
Citations
PageRank
Cheng-Jie Tsai141.82
Tsern-Huei Lee224430.63