TY - GEN
T1 - Fast Uplink Access in TDD Systems for Ultra Reliable and Low Latency Communications
AU - Kim, Wonjun
AU - Ji, Hyoungju
AU - Shim, Byonghyo
N1 - Funding Information:
This work was supported by ’The Cross-Ministry Giga KOREA Project’ grant funded by the Korea government(MSIT) (No.0423-20170040, Development of Ultra Low-Latency Radio Access Technologies for 5G URLLC Service)
Publisher Copyright:
© 2018 IEEE.
PY - 2019/2/22
Y1 - 2019/2/22
N2 - Fifth generation (5G) wireless networks are currently being developed to handle wide variety of use cases. In order to support these cases, new types of requirements other than throughput enhancement have been introduced. One such requirement is to reduce the latency down to a millisecond (ms) level in ultra reliable and low latency communications (URLLC). In case of uplink transmission, supporting this stringent latency requirement is quite challenging since the scheduling procedure is a time-consuming and complicated handshaking process. In time division duplexing (TDD) systems, satisfying the latency requirement is far more difficult since the mobile device cannot transmit the data when the subframe is assigned for the downlink. In this paper, we propose a low latency access scheme suitable for TDD-based URLLC. Key idea of the proposed scheme is to transmit the latency sensitive data immediately after the grant signaling. To support the fast uplink access, we introduce a fast grant signaling scheme based on the compressed sensing technique. Numerical results confirm that the proposed uplink access scheme is very effective in TDD-based URLLC systems.
AB - Fifth generation (5G) wireless networks are currently being developed to handle wide variety of use cases. In order to support these cases, new types of requirements other than throughput enhancement have been introduced. One such requirement is to reduce the latency down to a millisecond (ms) level in ultra reliable and low latency communications (URLLC). In case of uplink transmission, supporting this stringent latency requirement is quite challenging since the scheduling procedure is a time-consuming and complicated handshaking process. In time division duplexing (TDD) systems, satisfying the latency requirement is far more difficult since the mobile device cannot transmit the data when the subframe is assigned for the downlink. In this paper, we propose a low latency access scheme suitable for TDD-based URLLC. Key idea of the proposed scheme is to transmit the latency sensitive data immediately after the grant signaling. To support the fast uplink access, we introduce a fast grant signaling scheme based on the compressed sensing technique. Numerical results confirm that the proposed uplink access scheme is very effective in TDD-based URLLC systems.
UR - http://www.scopus.com/inward/record.url?scp=85063219869&partnerID=8YFLogxK
U2 - 10.1109/TENCON.2018.8650297
DO - 10.1109/TENCON.2018.8650297
M3 - Conference contribution
AN - SCOPUS:85063219869
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
SP - 1616
EP - 1619
BT - Proceedings of TENCON 2018 - 2018 IEEE Region 10 Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE Region 10 Conference, TENCON 2018
Y2 - 28 October 2018 through 31 October 2018
ER -