Full-Duplex Wireless Scheduling via UE Grouping and Pairing
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Solution Overview
Problem
Full-duplex wireless communication systems face challenges in suppressing co-channel interference and self-interference, particularly due to the co-time and co-frequency nature of uplink and downlink transmissions, which affects spectrum efficiency and throughput.
Innovation Solution
A method of scheduling User Equipments (UEs) by grouping them based on distance metrics and pairing groups to schedule uplink and downlink transmissions in different directions on the same time-frequency resource, using beamforming gains and path loss estimates to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex transmission is implemented on the same time-frequency resource, then spectrum efficiency is improved, but co-channel interference and self-interference increase
Solution Approach 1:
The patent segments the set of user equipments into multiple groups based on their spatial locations and distance metrics. By dividing UEs into groups and further pairing groups, the system manages interference in a structured manner, allowing full-duplex transmission while controlling co-channel interference through spatial separation and grouping strategies.
Solution Approach 2:
The patent applies different transmission directions and interference suppression strategies to different groups of UEs based on their local spatial characteristics. By determining transmission directions and applying beamforming gains specific to each group's location and distance, the system optimizes performance locally while maintaining overall system efficiency.
2Productivity
If uplink and downlink transmissions occur simultaneously on the same time-frequency resource, then throughput is improved, but self-interference and co-channel interference increase
Solution Approach 1:
The patent segments UEs into groups and pairs groups to manage self-interference and co-channel interference systematically. This segmentation allows simultaneous uplink and downlink transmissions while controlling interference through structured group pairing and spatial separation strategies.
Solution Approach 2:
The patent introduces an intermediary grouping mechanism that mediates between uplink and downlink transmissions. By creating intermediate groups and pairing them strategically, the system enables simultaneous transmissions while using the grouping structure as an intermediary to manage and suppress interference.
Data Source
AI summary
The present disclosure provides a method of scheduling for a UE. The method includes dividing M UEs into N groups, wherein a distance metric between each UE in a group and the center of the group does not exceed a first predetermined threshold, where M and N are positive integers; pairing the N groups, wherein a distance metric between centers of the two paired groups is greater than a second predetermined threshold; and in a case where there is a group paired with a group to which a first UE for which scheduling is to be performed belongs, scheduling transmissions in different directions respectively for the first UE and the second UE from the paired group on the same time-frequency resource. The present disclosure also provides a signal transmission method, a base station, a UE and a computer readable medium.