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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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QoS-Guaranteed Slot Allocation Algorithm for Efficient Medium Access in HR-WPAN

  • Sung, Jung-Sik (IT Convergence Technology Research Laboratory, ETRI) ;
  • Lee, Hyunjeong (IT Convergence Technology Research Laboratory, ETRI) ;
  • Kang, Tae-Gyu (IT Convergence Technology Research Laboratory, ETRI) ;
  • Huh, Jaedoo (IT Convergence Technology Research Laboratory, ETRI)
  • Received : 2015.03.30
  • Accepted : 2015.07.20
  • Published : 2015.12.01
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Abstract

It is very important to provide a parameterized quality of service (QoS) using traffic specification (TSPEC), such as mean data rate, maximum burst size, and peak data rate, when packets from the application layer need to be transmitted with guaranteed services in a high-rate wireless personal area network (HR-WPAN). As medium resources are limited, the optimal medium time required for each device needs to be estimated to share the resources efficiently among devices. This paper proposes a variable-service interval-based resource allocation algorithm to efficiently make a reservation of medium resources based on a parameterized QoS. In other words, the proposed algorithm calculates the number of medium access slots (MASs) based on TSPEC, local resources, and local conditions and determines suitable locations for the MASs within a superframe to accommodate more devices. The simulation results show that the proposed algorithm can accommodate more devices and has greater than 10% resource allocation efficiency in an HR-WPAN compared to existing schemes.

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References

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