Robust Synchronization Waveform Design for Massive IoT

Machine-type communication (MTC) is the key technology to support data transfer among devices (sensors and actuators) in Internet of Things (IoT). However, MTC, especially when applied to massive low-power IoT (mIoT), poses some unique and serious challenges due to the low-cost and low-power nature of an mIoT device. One of the most challenging issues is providing a robust way for an mIoT device to acquire the network under a large frequency offset/error (due to the use of a low-cost crystal oscillator) and a low operating SNR (due to the extended coverage). We address the issues in the existing mIoT system acquisition, particularly the initial synchronization waveform detection, and derive a new synchronization waveform that is more robust in an mIoT environment. The mathematical approach provides a useful analytical insight into the design of the synchronization signal waveform for the 5G mIoT system.

[1]  Michael Mao Wang,et al.  Preamble design, system acquisition, and determination in modern OFDMA cellular communications: an overview , 2011, IEEE Communications Magazine.

[2]  Shuangfeng Han,et al.  Non-orthogonal multiple access for 5G: solutions, challenges, opportunities, and future research trends , 2015, IEEE Communications Magazine.

[3]  Di Yuan,et al.  Power and Channel Allocation for Non-Orthogonal Multiple Access in 5G Systems: Tractability and Computation , 2016, IEEE Transactions on Wireless Communications.

[4]  Hakima Chaouchi,et al.  The Internet of things : connecting objects to the web , 2013 .

[5]  Gilles Charbit,et al.  Uplink Contention Based Multiple Access for 5G Cellular IoT , 2015, 2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall).

[6]  Amitava Ghosh,et al.  NB-IoT system for M2M communication , 2016, 2016 IEEE Wireless Communications and Networking Conference.

[7]  O. Edfors,et al.  Time and frequency synchronization for OFDM using PN-sequence preambles , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[8]  Frank Schaich,et al.  Universal-filtered multi-carrier technique for wireless systems beyond LTE , 2013, 2013 IEEE Globecom Workshops (GC Wkshps).

[9]  P. A. Laplante,et al.  Comprehensive Dictionary of Electrical Engineering , 2005 .

[10]  Sassan Ahmadi.  LTE-Advanced: A Practical Systems Approach to Understanding 3GPP LTE Releases 10 and 11 Radio Access Technologies , 2013 .

[11]  Xiaohu You,et al.  Analysis of the Frequency Offset Effect on Random Access Signals , 2013, IEEE Transactions on Communications.

[12]  M. Sandell,et al.  Low-complex frame synchronization in OFDM systems , 1995, Proceedings of ICUPC '95 - 4th IEEE International Conference on Universal Personal Communications.

[13]  Xi Zhang,et al.  On the Waveform for 5G , 2016, IEEE Communications Magazine.

[14]  Kingsley J. Zou,et al.  Analysis of the Frequency Offset Effect on Zadoff–Chu Sequence Timing Performance , 2014, IEEE Transactions on Communications.

[15]  John R. Vig,et al.  Quartz Crystal Resonators and Oscillators for Frequency Control and Timing Applications , 1993 .

[16]  Weidong Fang,et al.  PSS based time synchronization for 3GPP LTE downlink receivers , 2011, 2011 IEEE 13th International Conference on Communication Technology.

[17]  Xiaohu You,et al.  Cellular machine-type comm unications: physical challenges and solutions , 2016, IEEE Wireless Communications.

[18]  Harri Saarnisaari,et al.  Matched Filter Time and Frequency Synchronization Method for OFDM Systems using PN-sequence Preambles , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[19]  Antti Toskala,et al.  LTE for UMTS: Evolution to LTE-Advanced , 2011 .

[20]  Qiuting Huang,et al.  Maximum-Likelihood Detection for Energy-Efficient Timing Acquisition in NB-IoT , 2017, 2017 IEEE Wireless Communications and Networking Conference Workshops (WCNCW).

[21]  Xingqin Lin,et al.  A Primer on 3GPP Narrowband Internet of Things , 2016, IEEE Communications Magazine.