Exploiting regional differences: A spatially adaptive random access

Dong Min Kim, Seong Lyun Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this paper, we discuss the potential for improvement of the simple random access scheme by utilizing local information such as the received signal-to-interference-plus-noise-ratio (SINR). We propose a spatially adaptive random access (SARA) scheme in which the transmitters in the network utilize different transmit probabilities depending on the local situation. In our proposed scheme, the transmit probability is adaptively updated by the ratio of the received SINR and the target SINR. We investigate the performance of the SARA scheme. For comparison, we derive an optimal transmit probability of ALOHA scheme in which all transmitters use the same transmit probability. We illustrate the performance of the SARA scheme through simulations. We show that the performance of the proposed scheme surpasses that of the optimal ALOHA scheme and is comparable with the CSMA/CA scheme.

Original languageEnglish
Article number7079533
Pages (from-to)4342-4352
Number of pages11
JournalIEEE Transactions on Wireless Communications
Issue number8
Publication statusPublished - 2015 Aug 1

Bibliographical note

Publisher Copyright:
© 2002-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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