Journal on Communications ›› 2021, Vol. 42 ›› Issue (3): 45-53.doi: 10.11959/j.issn.1000-436x.2021059

• Papers • Previous Articles     Next Articles

Two-timescale unlicensed spectrum partitioning algorithm between LTE and Wi-Fi network

Weihua WU1, Runzi LIU2, Qinghai YANG1   

  1. 1 School of Telecommunications Engineering, Xidian University, Xi’an 710071, China
    2 School of Information and Control Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
  • Revised:2020-11-19 Online:2021-03-25 Published:2021-03-01
  • Supported by:
    The National Natural Science Foundation of China(61801365);The National Natural Science Foundation of China(61701365);The National Natural Science Foundation of China(61971327);China Postdoctoral Science Foundation Project(2018M643581);Young Talent Fund of University Association for Science and Technology in Shannxi Province(20200112);Research Funds for the Central Universities(20103216726)

Abstract:

According to the spectrum partitioning decisions of Wi-Fi and LTE respectively depended on global channel state information (CSI) and local CSI, an online two-timescale iteration algorithm was developed.The Wi-Fi spectrum was partitioned at the large timescale according to the global CSI whereas the LTE spectrum was partitioned according to the fast-changing local CSI.Then, the adaptive compensation mechanism was designed for improving the tracking performance of the two-timescale algorithm.Moreover, the sufficient condition was derived for the two-timescale algorithm tracking the moving equilibrium point without errors.Finally, the simulation results show that the proposed two-timescale algorithm achieves excellent system performance at very low overhead.

Key words: unlicensed spectrum, coexistence, LTE, Wi-Fi, two-timescale algorithm

CLC Number: 

No Suggested Reading articles found!