A case for leveraging 802.11p for direct phone-to-phone communications

Pilsoon Choi, Jason Gao, Nadesh Ramanathan, Mengda Mao, Shipeng Xu, Chirn Chye Boon, Suhaib A. Fahmy, Li Shiuan Peh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations


WiFi cannot effectively handle the demands of device-to-device communication between phones, due to insufficient range and poor reliability. We make the case for using IEEE 802.11p DSRC instead, which has been adopted for vehicle-to-vehicle communications, providing lower latency and longer range. We demonstrate a prototype motivated by a novel fabrication process that deposits both III-V and CMOS devices on the same die. In our system prototype, the designed RF front-end is interfaced with a baseband processor on an FPGA, connected to Android phones. It consumes 0.02uJ/bit across 100m assuming free space. Application-level power control dramatically reduces power consumption by 47-56%.
Original languageEnglish (US)
Title of host publicationProceedings of the International Symposium on Low Power Electronics and Design
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Print)9781450329750
StatePublished - Oct 13 2015
Externally publishedYes


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