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Dynamic Bandwidth Part Allocation in 5G Ultra Reliable Low Latency Communication for Unmanned Aerial Vehicles with

Minsig Han¹, Jaewon Lee¹, Minjoong Rim²

¹School of Electrical Engineering, Korea University, Seoul 02841, Korea.

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|March 6, 2021

Summary

This study introduces a dynamic bandwidth part (BWP) allocation scheme for 5G New Radio, balancing enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC) for aerial vehicles. The new method minimizes URLLC

Keywords:

URLLC bandwidth part dynamic multiplexing eMBB orthogonal slicing resource allocation unmanned aerial vehicle

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Area of Science:

Wireless communication systems
5G New Radio physical layer specifications
Resource management for aerial vehicles

Background:

5G New Radio supports eMBB and URLLC coexistence, crucial for aerial vehicles.
Dynamic Multiplexing (DM) allows URLLC traffic puncturing of eMBB traffic for capacity.
DM can cause frame errors; Orthogonal Slicing (OS) offers resource separation.

Purpose of the Study:

To propose a dynamic BWP allocation scheme minimizing URLLC's impact on eMBB traffic.
To analyze the capacity region considering physical layer parameters for DM and OS.
To provide a URLLC load threshold for selecting between DM and OS.

Main Methods:

Analysis of capacity region considering Modulation and Coding Scheme (MCS) and code block group size.
Quantification of eMBB traffic tolerance against URLLC puncturing.
Development of a URLLC load threshold for dynamic BWP allocation decisions.

Main Results:

OS improves eMBB throughput under URLLC latency constraints for predictable traffic.
DM has limited error correction against URLLC puncturing.
Relative MCS levels critically influence eMBB tolerance to puncturing.

Conclusions:

The proposed dynamic BWP allocation scheme effectively balances eMBB and URLLC traffic.
The derived URLLC load threshold guides the selection between DM and OS for optimal performance.
This research provides essential references for efficient URLLC aerial vehicle communication in 5G networks.