Full-Duplex UE Grouping for Interference Reduction
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Solution Overview
Problem
In full-duplex wireless communications, user equipment (UE) experiences significant interference when performing uplink transmission and downlink receiving on the same frequency band, particularly when UEs are close to each other, leading to reduced spectral efficiency and increased interference between UEs in the same cell.
Innovation Solution
A configuration method where a base station divides user equipment in a cell into groups and configures distinct uplink and downlink frequency bands for each group, ensuring these bands are different within the same user group, thereby minimizing interference between UEs by using different frequency sub-bands for uplink and downlink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user equipment performs uplink transmission and downlink receiving on the same frequency band in full-duplex mode, then spectral efficiency is improved, but interference between user equipment increases significantly
Solution Approach 1:
The patent divides user equipment into multiple groups (first user group and second user group) and allocates different frequency sub-bands to each group. Specifically, the first frequency sub-band is used for uplink transmission by the first user group while the second frequency sub-band is used for downlink reception by the second user group, and vice versa. This segmentation approach allows full-duplex operation while reducing interference between simultaneous uplink and downlink transmissions.
2Area of stationary object
If user equipment that performs uplink transmission is close to user equipment that performs downlink receiving, then spatial resource utilization is improved, but downlink receiving is greatly interfered with
Solution Approach 1:
The patent applies local quality by assigning different frequency sub-band configurations to different user groups based on their spatial locations and interference characteristics. The first user group and second user group are configured with complementary frequency sub-allocations, where each group experiences reduced interference from the other group's transmissions. This allows spatially close user equipment to coexist by giving them differentiated local frequency resources.
Data Source
Figure 1a
Figure 1b~2a
Figure 2b
AI summary
Embodiments of the present invention provide a configuration method and apparatus, and relate to the field of communications technologies, so as to reduce interference between user equipments in a full-duplex system. The configuration method provided in the embodiments of the present invention is applied to a full-duplex system, and includes: dividing, by a base station, user equipments in a first cell into N user groups, where N is a positive integer greater than or equal to 2; and configuring, by the base station for user equipment in each of the N user groups, an uplink frequency band used for uplink transmission and a downlink frequency band used for downlink receiving, where the uplink frequency band is different from the downlink frequency band in a same user group, and the uplink frequency band and the downlink frequency band are frequency sub-bands of an operating frequency band of the full-duplex system. According to the embodiments of the present invention, interference between user equipments is reduced.