Vertical link on/off regulations for inductive-coupling based wireless 3-D NoCs

Hao Zhang, Hiroki Matsutani, Yasuhiro Take, Tadahiro Kuroda, Hideharu Amano

Research output: Contribution to journalArticle

Abstract

We propose low-power techniques for wireless three-dimensional Network-on-Chips (wireless 3-D NoCs), in which the connec-tions among routers on the same chip are wired while the routers on differ-ent chips are connected wirelessly using inductive-coupling. The proposed low-power techniques stop the clock and power supplies to the transmitter of the wireless vertical links only when their utilizations are higher than the threshold. Meanwhile, the whole wireless vertical link will be shut down when the utilization is lower than the threshold in order to reduce the power consumption of wireless 3-D NoCs. This paper uses an on-demand method, in which the dormant data transmitter or the whole vertical link will be ac-tivated as long as a flit comes. Full-system many-core simulations using power parameters derived from a real chip implementation show that the proposed low-power techniques reduce the power consumption by 23.4%-29.3%, while the performance overhead is less than 2.4%.

Original languageEnglish
Pages (from-to)2753-2764
Number of pages12
JournalIEICE Transactions on Information and Systems
VolumeE96-D
Issue number12
DOIs
Publication statusPublished - 2013 Dec

    Fingerprint

Keywords

  • 3-D network on chip (3-D NoC)
  • Inductive-coupling
  • Low power
  • On/off vertical link
  • Wireless

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence

Cite this