Internet of Moving Things using Full Duplex Mesh Networks

Internet of Moving Things using Full Duplex Mesh Networks

SriramVishwanathWirelessNetworkingand

Communica8onsGroup(WNCG)ECE,UTAus8n

Self Interference in Full Duplex

Tx

Rx

ScaBers

Received Signal

Transmit Signal

Reflected Signal DirectPath

x -> received signal z - > transmit signal w-> noise signal

True Full Duplex Radios

•  Possiblethroughself-interferenceisola8onandcancella8on– 110+dBofisola8on/cancella8onnecessary

•  Enableslisten-while-talking– Muchmoreefficientmobilemeshing

•  Cancella8onofselfinterference–  Usingdiscretecomponents

–  110dB•  Singleantenna•  WorkswellwithMIMO

RF Cancellation

Digital Non Linear DF Filter

60-70 dB

50 dB

DSP

Digital Cancell

ation

BB TX

BB RX

DAC

Analog Filters AD

C

RF –Cancellation

Our prototype: 2.4G, 20 MHz, 100 Mbps

Advantages of Full Duplex

Internet of Moving Things (IoMT)

•  Fullduplex+mobilemeshing– Marriagemadeinheaven–  Lowoverhead,highthroughputmeshing

•  Connectpeopleanddevicesastheymove– Astheymove– Discovery,rou8ng,handoffefficient

Testing over actual paths Structured&RandomMovement

Scalable Testing – Great Results