Details

Project TitleRapid-on-off-Division Duplex for Wireless
Track Code2009-045
Short Description

A novel physical/MAC-layer paradigm for ad hoc or peer-to-peer wireless networks to vastly improve peer discovery and data communication

Abstract

Northwestern researchers have designed a novel physical/MAC-layer paradigm for ad hoc or peer-to-peer wireless networks to vastly improve peer discovery and data communication. This new technology is named rapid-on-off-division duplex (RODD). It significantly improves upon the transmission of signals and diminishes error-control coding overhead. Affordable radios are subject to half-duplex constraint which means that a node cannot simultaneously transmit and receive useful signal. Traditional schemes, such as time-division duplex (TDD) and frequency-division duplex (FDD), do not have absolute distinction of "uplink" and "downlink" transmissions. In contrast, the defining feature of RODD is to let each node transmit according to an on-off duplex mask over every frame interval, and receive signals from its peers during its own off-slots. RODD is especially efficient if the traffic is simultaneous broadcast from nodes to their one-hop peers, such as in spontaneous wireless social networks and communication networks.

 
TagsCOMMUNICATIONS: networking, COMMUNICATIONS: wireless
 
Posted DateJan 31, 2012 5:06 PM

Inventor(s)

Dongning Guo*

Jun Luo

Applications

  • Wireless networks: peer-to-peer and ad hoc
  • Data communication networks for disaster relief or battlefield

Advantages

  • Nearly doubles transition throughput
  • Decreases error-control coding overhead in small data transmissions

IP Status

Issued US Patent No. 8,665,063

Marketing Contact

Arjan Quist, PhD
Invention Manager

(p) 847.467.0305

(e) arjan.quist@northwestern.edu