Comparison of graph-based and hypergraph-based models for wireless network coexistence

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Abstract

Dynamic Spectrum Access (DSA) is regarded as a promising solution for efficient spectrum management. Regulators have also approved licence-exemption or general authorisation access (GAA) to further improve spectrum accessibility for DSA systems in the Television (TV) and 3.5 GHz bands. However, heterogeneous DSA radio standards have been developed and the gains in spectrum efficiency could be undermined by coexistence challenges. Hence, the IEEE 802.19.1 standard for wireless network coexistence methods was published, but it leaves algorithmic implementation of the methods to the industry. When the spectrum is not sufficient for exclusive channel allocation, the standard includes a method for co-channel sharing among coexistent neighbour networks. In previous work, channel sharing was introduced on top of the exclusive channel allocation. However, channel sharing options could be significantly limited by the outcome of the exclusive channel allocation. Alternatively, this paper proposes use of hypergraph theory to model the co-sharing strategy for coexistence management of heterogeneous radio systems. Results demonstrate that the hypergraph method achieves higher average spectrum utilisation by up to 8% and requires up to 5 fewer channels to achieve, on average, 100% operational networks than the previous method.
Original languageEnglish
Number of pages6
Publication statusPublished - 7 Sep 2021
EventIEEE International Mediterranean Conference on Communications and Networking - Athens, Greece
Duration: 7 Sep 202110 Sep 2021
https://meditcom2021.ieee-meditcom.org/

Conference

ConferenceIEEE International Mediterranean Conference on Communications and Networking
Abbreviated titleIEEE MeditCom
Country/TerritoryGreece
CityAthens
Period7/09/2110/09/21
Internet address

Keywords

  • dynamic spectrum access
  • television white space
  • hypergraph theory
  • spectral coexistence
  • coexistence management

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