Abstract:

With the development of smart cities, Internet of Vehicles (IoV), and Industrial Internet, mobile communications network services have an obvious upward trend. Large uplink broadband communication has become an important evolution direction of 5G-Advanced. This document greatly improves the uplink capability of 5G-Advanced networks in the time domain, frequency domain, space domain, and power domain, meeting the service requirements of the Industrial Internet. Innovative interference cancellation methods in the time domain enable more uplink transmission opportunities for TDD networks. In the frequency domain, the innovative full-spectrum flexible access mechanism introduces more uplink frequency resources. In the space domain, uplink multi-layer MIMO enhancement increases the number of concurrent uplink multi-user flows. In the power domain, a transmission mechanism for multiple terminals is proposed. This mechanism maximizes the effective power and makes full use of the diversity effect of the channel state to ensure stable uplink user experience.

Key words: 5G-Advanced, flexible duplex, full uplink, flexible spectrum access, UE aggregation