Name
Title | ||
|---|---|---|
Enabling URLLC in uncontrolled environments by combining licensed and unlicensed spectrum |
Abstract | ||
|---|---|---|
5G New Radio (NR) technology continues evolving with Release 17 bringing new features to enable Ultra-Reliable and Low-Latency Communications (URLLC) in unlicensed spectrum. New Radio-Unlicensed (NR-U) enhancements will allow further expansion of 5G application in private networks sectors in enterprise and industry. In unlicensed controlled environment conditions, a URLLC performance comparable to NR with TDD in the licensed spectrum can be achieved. However, it is still questionable whether the unlicensed spectrum can leverage URLLC in environments with uncontrolled interference from other radio access technologies, such as Wi-Fi. In this case, multilink techniques are needed to mitigate the impact of unplanned interference on the latency and reliability performance. In this work, we study the combined use of licensed and unlicensed spectrum with the target of improving the overall system capacity. The paper shows that cross-carrier retransmission techniques are necessary to meet the strict latency and reliability targets such as 5 ms with 99.999% reliability. The system-level simulation results exhibit that, combining licensed and unlicensed spectrum, a URLLC capacity improvement of approximately 45% is achieved as compared to operation in licensed spectrum only, even in presence of sporadic Wi-Fi interference. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/WCNC51071.2022.9771780 | 2022 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC) |
Keywords | DocType | ISSN |
carrier aggregation, new radio, new radio unlicensed, capacity, URLLC | Conference | 1525-3511 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Roberto Maldonado | 1 | 0 | 0.34 |
| Claudio Rosa | 2 | 0 | 0.34 |
| Morten Toft | 3 | 0 | 0.34 |
| Renato Abreu | 4 | 0 | 0.34 |