TY - GEN
T1 - Uplink transmission design with massive machine type devices in tactile internet
AU - She, Changyang
AU - Yang, Chenyang
AU - Quek, Tony Q.S.
N1 - Funding Information:
This work is supported partially by the National High Technology Research and Development Program of China under grant 2014AA01A703, National Basic Research Program of China, 973 Program under grant 2012CB316003 and National Natural Science Foundation of China (NSFC) under Grant 61120106002.
PY - 2016
Y1 - 2016
N2 - In this work, we study how to design uplink transmission with massive machine type devices in tactile internet, where ultra-short delay and ultra-high reliability are required. To characterize the transmission reliability constraint, we employ a two-state transmission model based on the achievable rate with finite blocklength channel codes. If the channel gain exceeds a threshold, a short packet can be transmitted with a small error probability; otherwise there is a packet loss. To exploit frequency diversity, we assign multiple subchannels to each active device, from which the device selects a subchannel with channel gain exceeding the threshold for transmission. To show the total bandwidth required to ensure the reliability, we optimize the number of subchannels and bandwidth of each subchannel and the threshold for each device to minimize the total bandwidth of the system with a given number of antennas at the base station. Numerical results show that with 1000 devices in one cell, the required bandwidth of the optimized policy is acceptable even for prevalent cellular systems. Furthermore, we show that by increasing antennas at the BS, frequency diversity becomes unnecessary, and the required bandwidth is reduced.
AB - In this work, we study how to design uplink transmission with massive machine type devices in tactile internet, where ultra-short delay and ultra-high reliability are required. To characterize the transmission reliability constraint, we employ a two-state transmission model based on the achievable rate with finite blocklength channel codes. If the channel gain exceeds a threshold, a short packet can be transmitted with a small error probability; otherwise there is a packet loss. To exploit frequency diversity, we assign multiple subchannels to each active device, from which the device selects a subchannel with channel gain exceeding the threshold for transmission. To show the total bandwidth required to ensure the reliability, we optimize the number of subchannels and bandwidth of each subchannel and the threshold for each device to minimize the total bandwidth of the system with a given number of antennas at the base station. Numerical results show that with 1000 devices in one cell, the required bandwidth of the optimized policy is acceptable even for prevalent cellular systems. Furthermore, we show that by increasing antennas at the BS, frequency diversity becomes unnecessary, and the required bandwidth is reduced.
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U2 - 10.1109/GLOCOMW.2016.7849072
DO - 10.1109/GLOCOMW.2016.7849072
M3 - Conference contribution
AN - SCOPUS:85015886150
T3 - 2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings
BT - 2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE Globecom Workshops, GC Wkshps 2016
Y2 - 4 December 2016 through 8 December 2016
ER -