OFDM Multiple Antennas Cognitive Radio Relay Synchronization CDMA Channel Estimation Spectrum Sharing Interference Cancellation Spectrum Sensing Full duplex Neural Networks Resource Allocation Stochastic Geometry Equalizer Bi-Directional Feedback Heterogeneous Networks Energy Harvesting Femtocell Device-to-Device (D2D) Idle cells FBMC Ultra-dense small cell networks Cell Search Spectral efficiency SINR mismatch problem Cross-link interference HetNet Dynamic TDD self-interference cancellation full-duplex relay in-band full-duplex system automatic repeat request (ARQ) transmission capacity (TC) full-duplex cellular Two-way communications sensing duration selection diversity GFDM interference mitigation Correlated MIMO mode selection multi-spectral outage probability achievable sum rate Cognitive relay networks Vehicular and wireless technologies bursty traffic model UL grant free NOMA Asynchronized system Reliability Latency Cellular networks LTE-TDD Iterative decoder Bi-directional full-duplex OQAM UWB MU-MIMO coexistence Link adaptation beamforming Simultaneous Sensing and Transmission CP-OFDM Long Term Evolution-Advanced Aggregate interference singular value decomposition MIMO 5G networks time-frequency efficiency K-S statistics Time spreading Windowing Vehicle-to-vehicle communication LTE-based V2V interference coordination prototype filter pilot signal TS-W-OFDM eigen decomposition link reliability interference to noise ratio tabu-search resource size control C-V2V Coexistence scenarios interference management Resource management mixed numerology Vehicle-to-Vehicle massive connectivity Complexity non-orthogonal multiple access full-spreading NOMA Filtered OFDM Singular Vale Decomposition 5G flexible duplex Cooperative systems
Status : Published 
Date : 2017-07 
Title : Latency of Cellular-based V2X: Perspectives on TTI-proportional-latency and TTI-independent-latency 
Authors : Kwonjong Lee, Joonki Kim, Yosub Park, Hanho Wang, and Daesik Hong 
Journal : IEEE Access 
Abstract : Vehicle-to-Everything (V2X) is a form of wireless communication that is extremely sensitive to latency, because the latency is directly related to driving safety. The V2X systems developed so far have been based on the LTE system. However, the conventional LTE system is not able to support the latency requirements of latency-aware V2X. Fortunately, the state-ofthe-art cellular technology standard includes development of latency reduction schemes such as shortened transmission time intervals (TTI) and self-contained subframes. This paper verifies and analyzes the latency of cellular-based V2X with shortened TTI, which is one of the most efficient latency reduction schemes. To verify the feasibility of V2X service, we divide the V2X latency into two types of latency, TTI-independent latency (IL) and TTI-proportional latency (PL). Moreover, using system-level simulations considering additional overhead from shortened TTI, we evaluate the latency of cellular-based V2X systems. Based on this feasibility verification, we then propose cellular-based V2X system design principles in terms of shortened TTI with only one OFDM symbol and while sustaining RRC connection. 
URL : http://ieeexplore.ieee.org/stamp/stamp.j...er=7990497 
Download : https://mirinae.yonsei.ac.kr/?module=fil...le_srl=179 


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» [IEEE Access] Kwonjong Lee, Joonki Kim, Yosub Park, Hanho Wang, and Daesik Hong, "Latency of Cellular-based V2X: Perspectives on TTI-proportional-latency and TTI-independent-latency", IEEE Access, Jul. 2017 file Published  2017-07