Multi-Operator Fairness in Transparent RAN Sharing by Soft-Partition with Blocking and Dropping Mechanism

Hsu Tung Chien*, Ying-Dar Lin, Hsien Wen Chang, Chia Lin Lai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Radio access network (RAN) sharing has attracted significant attention from telecom operators as a means of accommodating data surges. However, current mechanisms for RAN sharing ignore the fairness issue among operators, and hence the RAN may be under-or over-utilized. Furthermore, the fairness among different operators cannot be guaranteed, since the RAN resources are distributed on a first come, first served basis. Accordingly, the present study proposes a 'soft-partition with blocking and dropping' (SBD) mechanism that offers inter-operator fairness using a 'soft-partition' approach. In particular, the operator subscribers are permitted to overuse the resources specified in the predefined service-level-agreement when the shared RAN is under-utilized, but are blocked (or even dropped) when the RAN is over-utilized. The simulation results show that SBD achieves an inter-operator fairness of 0.997, which is higher than that of both a hard-partition approach (0.98) and a no-partition approach (0.6) while maintaining a shared RAN utilization rate of 98%. Furthermore, SBD reduces the blocking rate from 35% (hard partition approach) to almost 0%, whereas controlling the dropping rate at 5%. Notably, the dropping rate can be reduced to almost 0% using a newly proposed bandwidth scale down procedure.

Original languageEnglish
Article number8471223
Pages (from-to)11597-11605
Number of pages9
JournalIEEE Transactions on Vehicular Technology
Volume67
Issue number12
DOIs
StatePublished - 1 Dec 2018

Keywords

  • RAN sharing
  • Radio access network (RAN)
  • blocking rate
  • dropping rate
  • fairness
  • soft partition
  • utilization

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