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Subband Full Duplex (SBFD)

5G-Advanced
Deterministic Capability

Solution Overview

Subband Full Duplex (SBFD)

Subband Full Duplex (SBFD) is a new duplex mode with the TDD carrier split into sub-bands to enable simultaneous transmission and reception in the same slots. Together with cross-subband scheduling, the gNB could provide simultaneous guarantee of large uplink throughput and low latency to meet the requirements of critical vertical applications, and with flexible frame structure, the gNB could work with legacy terminals. SBFD can provide user-level service capability customization, so to flexibly fulfill various B2B and B2C applications requirements.

Scenarios and Problems

Diversified applications and increasing demand

Diversified B2B and B2C applications with different requirement. Higher requirement by critical B2B applications.

Limited performance of TDD mode

The traditional time division duplex and specific frame structure is hard to meet low latency and different requirement of B2B and B2C applications.

Advantages and Highlights

Industry-leading

The industry's first vendor to launch SBFD prototype, and completed end-to-end verification with third parties.

Ultra-strong performance

Based on cross-subband scheduling, SBFD can provide 700Mbps super-large uplink throughput and 4ms low latency simultaneously for one user.

Strong anti-interference capability

New hardware and multiple interference suppression techniques in space frequency domain, analog domain, and digital domain, help to enhance the interference suppression capability.

Good compatibility

Based on flexible frame structure configuration, SBFD can be compatible with the legacy terminals in the existing network.

Customer Values

Enabling new spectrum application mode

The limitation of "half-duplex" transmission and reception in TDD mode is removed, and "sub-bands" are introduced to enable gNB to support co-frequency co-time full duplex.

Flexible scheduling, enhanced user performance

Through the split UL/DL sub-bands and flexible scheduling between sub-bands, the service requirements of large uplink and low latency can be met at the same time.

Solution Video

Subband Full Duplex

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News

China Mobile Research Institute, MINO and ZTE accomplish the industry’s first pre-commercial trial of 5G-A based Industrial Field Network

2023-11-15

1=1+1, Smart Duplex Empowers Private 5G with high cost efficiency

2023-03-02

China Mobile, ZTE and Qualcomm Technologies complete the industry's first verification of 5G sub-band full-duplex

2023-02-22
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