Joint Optimization of Channel Selection and Frame Scheduling for Coexistence of LTE and WLAN

Haneul Ko, Jaewook Lee, Sangheon Pack

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Recently, the interest in operating long term evolution (LTE) in unlicensed bands (i.e., LTE-U) has increased. However, since LTE does not sense for channel vacancy prior to transmissions, whereas a wireless local area network (WLAN) is based on carrier sensing multiple access, LTE interference severely degrades the performance of WLAN. To maximize the LTE throughput while maintaining fairness between LTE and WLAN, we formulate a joint optimization problem of channel selection and frame scheduling in LTE. As a practical solution of this problem, we propose a low-complexity heuristic algorithm called the sequential operation algorithm (SOA). Evaluation results demonstrate that SOA can achieve an LTE throughput comparable to that of the optimal solution, while maintaining fairness between LTE and WLAN by selecting appropriate channels and conducting effective frame scheduling.

Original languageEnglish
JournalIEEE Transactions on Vehicular Technology
DOIs
Publication statusAccepted/In press - 2018 Feb 12

Fingerprint

Wireless Local Area Network (WLAN)
Long Term Evolution (LTE)
Wireless local area networks (WLAN)
Coexistence
Scheduling
Optimization
Term
Fairness
Throughput
Vacancy
Multiple Access
Heuristic algorithms
Heuristic algorithm
Low Complexity
Vacancies
Sensing
Optimal Solution
Interference
Maximise
Optimization Problem

Keywords

  • coexistence
  • fairness
  • Indexes
  • Long Term Evolution
  • LTE-unlicensed (LTE-U)
  • Scheduling
  • Semiconductor optical amplifiers
  • Sensors
  • Throughput
  • throughput
  • Unlicensed bands
  • Wireless LAN
  • wireless local area network (WLAN)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

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abstract = "Recently, the interest in operating long term evolution (LTE) in unlicensed bands (i.e., LTE-U) has increased. However, since LTE does not sense for channel vacancy prior to transmissions, whereas a wireless local area network (WLAN) is based on carrier sensing multiple access, LTE interference severely degrades the performance of WLAN. To maximize the LTE throughput while maintaining fairness between LTE and WLAN, we formulate a joint optimization problem of channel selection and frame scheduling in LTE. As a practical solution of this problem, we propose a low-complexity heuristic algorithm called the sequential operation algorithm (SOA). Evaluation results demonstrate that SOA can achieve an LTE throughput comparable to that of the optimal solution, while maintaining fairness between LTE and WLAN by selecting appropriate channels and conducting effective frame scheduling.",
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