QoE-Maximized Beam Assignment and Rate Control for Dynamic mm-Wave-Based Full-Duplex Small Cell Networks

Chun Hao Fang, Kai Ten Feng*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This study investigates the resource management problem for millimeter-wave-based switched beam (SWB) full-duplex small cell networks with the consideration of user equipment's (UE's) quality of experience (QoE) requirement and time-varying wireless channels. An optimization problem is formulated to maximize the long-term QoE by implementing beam assignment (BA) and rate control (RC) under short-term beam and long-term energy efficiency constraints. By leveraging the Lyapunov optimization technique, the original problem is converted into a series of BA and RC problems in each time slot. To solve the converted problem with affordable complexity, novel closed-form solutions for BA and RC are first derived by considering beam constraints in SWB systems. A decomposition-based BA and RC (DBR) algorithm with only polynomial computational complexity is then proposed based on the derived closed-form solutions. The simulation results demonstrate that the proposed DBR method can effectively['effectively' appears to be a more suitable word in this case.] balance the performance and complexity because the DBR scheme outperforms the benchmark scheme and achieves nearly optimal performance in terms of system delay and QoE.

Original languageEnglish
Pages (from-to)307-324
Number of pages18
JournalIEEE Open Journal of the Communications Society
StatePublished - 2023


  • beam assignment
  • full-duplex
  • millimeter-wave
  • QoE maximization
  • rate control
  • switched beam systems
  • time-varying channels


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