Paper Info
Title
Underlay Scheduling Request for Ultra-Reliable Low-Latency Communications
Abstract
Next generation mobile (namely, 3GPP 5G New Radio, henceforth 5G NR) networks not only envision enhancing the traditional link quality and data rates of Mobile Broad Band (MBB) links, but also development of new control channels to meet the requirements of delay sensitive use cases. In particular, the need for Ultra-Reliable Low-Latency Communications (URLLC) for many Internet of Things (IoT) users is greatly emphasized. In this article, we discuss some fundamental issues that relate to URLLC and present a new spread spectrum signaling design that we propose for transmission of Scheduling Requests (SRs) in 5G NR networks. The proposed design, although a Direct Sequence Spread Spectrum (DSSS) technique, is compatible with the OFDM signaling in LTE, hence, it can be easily integrated into LTE UE transmitter structures. Furthermore, it can be easily synchronized with the rest of an LTE network. In this paper, we propose a DSSS signal design that transmits a single bit for each scheduling request. We also propose a novel method that allows reliable detection of a UE signal when large portions of its spectrum are cluttered by other communications within the same cell.
Year
DOI
Venue
2019
10.1109/5GWF.2019.8911714
2019 IEEE 2nd 5G World Forum (5GWF)
Keywords
DocType
ISBN
URLLC,Scheduling request,Spread-spectrum,Underlay communications
Conference
978-1-7281-3628-8
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Hussein Moradi100.34
Behrouz Farhang-Boroujeny297284.30