Paper Info
Title
Channel Occupancy Cognition Based Adaptive Channel Access And Back-Off Scheme For Lte System On Unlicensed Band
Abstract
The fifth-generation (5G) mobile network is facing severe challenges of the traffic demand surge and spectrum scarcity. To improve the network capacity and data rate, the deployment of Long Term Evolution (LTE) cellular system on unlicensed band is considered as one of the promising solutions. But the interference problem among LTE and WiFi system on the same unlicensed band hinders the deployment process, which is a critical issue unsolved for network operators. Therefore, a novel channel access scheme integrating the energy detection scheme and back-off mechanism in LTE system has been proposed in this paper, to minimize the interference to WiFi system. The throughput of both LTE and WiFi systems and the optimal sensing time and back-off time are theoretically analyzed with proofs. Furthermore, an efficient adaptive reconfiguration strategy of access parameters is proposed based on the channel occupancy cognition results. Simulation results verify that the proposed channel access scheme with optimal back-off time can double the throughput of WiFi system when coexisting with LTE system on unlicensed band.
Year
Venue
Keywords
2016
2016 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE
LTE-U, WiFi, Unlicensed Band, Channel Access
Field
DocType
ISSN
Radio resource management,Spectrum management,Wireless,Computer science,Communication channel,Computer network,Cellular network,Interference (wave propagation),Throughput,Control reconfiguration
Conference
1525-3511
Citations 
PageRank 
References 
1
0.35
9
Authors
5
Name
Order
Citations
PageRank
Tuo Yang1172.11
Chunxia Guo210.35
Siwen Zhao310.69
Qixun Zhang415728.59
Zhiyong Feng514829.14