TY - GEN
T1 - PhyCast
T2 - 2018 IEEE International Conference on Communications, ICC 2018
AU - Feng, Bing
AU - Zhang, Chi
AU - Ding, Haichuan
AU - Fang, Yuguang
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/27
Y1 - 2018/7/27
N2 - WiFi's energy efficiency is a critical issue for battery-powered mobile devices. Since wireless channel has inherent broadcast nature, a non-negligible amount of a device's energy is spent on overhearing useless packets that are not addressed to itself. To resolve packet overhearing problem, most existing schemes are limited to decode data packet or exchange control packet to obtain extra information. In this paper, we propose PhyCast (Physical layer broadCast), a novel communication scheme to embed lightweight information into the front part of data transmission at the physical layer. With PhyCast, the transmitter's neighboring nodes extract information by symbol level energy detection, which does not require receiving and decoding the whole data packet. Therefore, unintended receivers can quickly drop useless packet and switch to a low-power state. The design of PhyCast does not affect the correct decoding of a data packet or sacrifice the normal data throughput. In addition, the communication scheme PhyCast is transparent to the existing WiFi devices, so PhyCast is backward compatible with the 802.11 standard. Our simulation results show that PhyCast achieves significant energy efficiency improvement under various network settings. When a WiFi network includes 15 nodes, PhyCast saves 36.85% energy compared with the 802.11 standard.
AB - WiFi's energy efficiency is a critical issue for battery-powered mobile devices. Since wireless channel has inherent broadcast nature, a non-negligible amount of a device's energy is spent on overhearing useless packets that are not addressed to itself. To resolve packet overhearing problem, most existing schemes are limited to decode data packet or exchange control packet to obtain extra information. In this paper, we propose PhyCast (Physical layer broadCast), a novel communication scheme to embed lightweight information into the front part of data transmission at the physical layer. With PhyCast, the transmitter's neighboring nodes extract information by symbol level energy detection, which does not require receiving and decoding the whole data packet. Therefore, unintended receivers can quickly drop useless packet and switch to a low-power state. The design of PhyCast does not affect the correct decoding of a data packet or sacrifice the normal data throughput. In addition, the communication scheme PhyCast is transparent to the existing WiFi devices, so PhyCast is backward compatible with the 802.11 standard. Our simulation results show that PhyCast achieves significant energy efficiency improvement under various network settings. When a WiFi network includes 15 nodes, PhyCast saves 36.85% energy compared with the 802.11 standard.
UR - http://www.scopus.com/inward/record.url?scp=85051434155&partnerID=8YFLogxK
U2 - 10.1109/ICC.2018.8422698
DO - 10.1109/ICC.2018.8422698
M3 - Conference contribution
AN - SCOPUS:85051434155
SN - 9781538631805
T3 - IEEE International Conference on Communications
BT - 2018 IEEE International Conference on Communications, ICC 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 20 May 2018 through 24 May 2018
ER -
