TY - JOUR
T1 - Unlocking Unlicensed Band Potential to Enable URLLC in Cloud Robotics for Ubiquitous IoT
AU - Bajracharya, Rojeena
AU - Shrestha, Rakesh
AU - Hassan, Syed Ali
AU - Jung, Haejoon
AU - Ansari, Rafay Iqbal
AU - Guizani, Mohsen
N1 - Funding information:This research was supported by the Ministry of Science and ICT, Korea, in part under the Information Technology Research Center support program (IITP-2021-0-02046) supervised by the Institute for Information & Communications Technology Planning & Evaluation, and in part under Grant NRF 2020H1D3A1A02080428 supervised by the National Research Foundation of Korea.
PY - 2021/9/1
Y1 - 2021/9/1
N2 - Cloud robotics (CR) support extremely high reliability and low-latency communications in ubiquitous Internet of Things applications. However, many of those applications currently rely on wired connection, limiting their use within the confines of Ethernet/optical links. Some wireless solutions such as Wi-Fi have been considered, but failed to meet the stringent criteria for latency and outage. On the other hand, cellular technology possesses expensive licensing. Thus, the Third Generation Partnership Project (3GPP) is actively working on New Radio in the unlicensed band for incorporating ultra-reliable low-latency communications (URLLC) into fifth generation and beyond communication networks. In this article, we aim to study the feasibility of URLLC in an unlicensed band specifically for CR applications. We open up various use cases and opportunities offered by the unlicensed band in achieving latency and reliability constraints for robotics applications. We then review the regulatory requirements of unlicensed band operation imposed by 3GPP and explore its medium access challenges for CR due to the shared use of unstable wireless channels. Finally, we discuss the potential technology enablers to achieve URLLC using the unlicensed band for the ubiquitous CR applications.
AB - Cloud robotics (CR) support extremely high reliability and low-latency communications in ubiquitous Internet of Things applications. However, many of those applications currently rely on wired connection, limiting their use within the confines of Ethernet/optical links. Some wireless solutions such as Wi-Fi have been considered, but failed to meet the stringent criteria for latency and outage. On the other hand, cellular technology possesses expensive licensing. Thus, the Third Generation Partnership Project (3GPP) is actively working on New Radio in the unlicensed band for incorporating ultra-reliable low-latency communications (URLLC) into fifth generation and beyond communication networks. In this article, we aim to study the feasibility of URLLC in an unlicensed band specifically for CR applications. We open up various use cases and opportunities offered by the unlicensed band in achieving latency and reliability constraints for robotics applications. We then review the regulatory requirements of unlicensed band operation imposed by 3GPP and explore its medium access challenges for CR due to the shared use of unstable wireless channels. Finally, we discuss the potential technology enablers to achieve URLLC using the unlicensed band for the ubiquitous CR applications.
UR - http://www.scopus.com/inward/record.url?scp=85119416590&partnerID=8YFLogxK
U2 - 10.1109/MNET.121.2100114
DO - 10.1109/MNET.121.2100114
M3 - Article
SN - 0890-8044
VL - 35
SP - 107
EP - 113
JO - IEEE Network
JF - IEEE Network
IS - 5
ER -