An Optimized and Distributed Data Packet Forwarding Scheme in LTE/LTE-A Networks

Haneul Ko, Giwon Lee, Dongeun Suh, Sangheon Pack, Xuemin Shen

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Long-term evolution (LTE)/LTE-advanced (LTE-A) networks have recently introduced a data packet forwarding scheme between evolved node Bs (eNBs) to reduce the signaling overhead and the delay incurred in the data path switching scheme, which is a baseline handover scheme in LTE/LTE-A networks. Even with the data packet forwarding scheme, if the length of the forwarding chain is set inappropriately, the data packet forwarding scheme suffers from the degraded throughput. To attain the optimal handover performance in terms of throughput and delay and reduce the signaling overhead, we propose an optimized and distributed data packet forwarding scheme where the optimal length of the forwarding chain is obtained by a Markov decision process (MDP). In addition, a low-complexity value iteration algorithm is devised to solve the optimality equation of MDP in a more practical manner. Real trace-driven evaluation results demonstrate that the proposed scheme determines the optimal length of the forwarding chain adaptively to the applications' quality-of-service (QoS) requirements and reduces the signaling overhead and delay while achieving higher throughput in diverse environments.

Original languageEnglish
Article number7105955
Pages (from-to)3462-3473
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Volume65
Issue number5
DOIs
Publication statusPublished - 2016 May 1

Keywords

  • Data packet forwarding
  • data path switching
  • handover
  • long-term evolution (LTE)/LTE-advanced (LTE-A)
  • Markov decision process (MDP)
  • trace-driven evaluation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Aerospace Engineering
  • Automotive Engineering
  • Computer Networks and Communications
  • Applied Mathematics

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