PRADA: Prioritized random access with dynamic access barring for MTC in 3GPP LTE-A networks

Tzu Ming Lin, Chia-Han Lee, Jen Po Cheng, Wen Tsuen Chen

Research output: Contribution to journalArticlepeer-review

111 Scopus citations


Due to the huge amount of machine-type communications (MTC) devices, radio access network (RAN) overload is a critical issue in cellular-based MTC. The prioritized random access with dynamic access barring (PRADA) framework was proposed to efficiently tackle the RAN overload problem and provide quality of service (QoS) for different classes of MTC devices in Third-Generation Partnership Project (3GPP) Long-Term Evolution Advanced (LTE-A) networks. The RAN overload issue is solved by preallocating random access channel (RACH) resources for different MTC classes with class-dependent back-off procedures and preventing a large number of simultaneous random access requests using dynamic access barring. In this paper, the performances of LTE-A without access barring, extended access barring (EAB), and PRADA are mathematically derived and compared, showing the superior performance of the PRADA scheme.

Original languageEnglish
Article number6720118
Pages (from-to)2467-2472
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Issue number5
StatePublished - 1 Jan 2014


  • Access barring
  • long-term evolution-A (LTE-A)
  • machine-to-machine (M2M)
  • machine-type communication (MTC)
  • random access network (RAN)

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