Terminal Scheduling for Full-Duplex Mutual Interference Mitigation
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Solution Overview
Problem
In one-to-many wireless full-duplex communications systems, mutual interference between terminal devices reduces communication efficiency and quality due to the use of the same time-frequency resources for transmission and reception.
Innovation Solution
A terminal scheduling method where a station sends a notification message to instruct terminals to send sounding signals, allowing other terminals to detect interference and report signal parameter values, enabling the station to perform scheduling processing to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is implemented in a one-to-many wireless system, then spectral efficiency is doubled compared to simplex communication, but mutual interference is generated between terminal devices using the same time-frequency resource
Solution Approach 1:
The patent implements a feedback mechanism where terminals send sounding signals to the station, which then provides feedback information about channel conditions and interference levels. This feedback enables the station to perform intelligent scheduling and resource allocation to mitigate mutual interference while maintaining full-duplex operation
Solution Approach 2:
The patent introduces dynamic scheduling where the station continuously adjusts time-frequency resource allocation based on real-time channel conditions and interference measurements. Terminals can dynamically switch between full-duplex and half-duplex modes, and resource blocks are dynamically assigned to minimize interference while maximizing spectral efficiency
2Productivity
If neighboring terminal devices use the same time-frequency resource for transmission and reception, then communication efficiency is improved, but mutual interference reduces communication quality
Solution Approach 1:
The patent applies local quality by allowing different terminals to use different communication modes (full-duplex or half-duplex) based on their specific channel conditions and interference environments. The station performs localized scheduling for each terminal pair, assigning resources according to individual interference characteristics rather than applying a uniform approach
Solution Approach 2:
The patent changes operational parameters dynamically, including modulation and coding schemes, power levels, and duplex modes, based on measured channel conditions and interference levels. The station adjusts these parameters in real-time to maintain communication quality while maximizing efficiency
3Extent of automation
If the station schedules terminals for simultaneous uplink and downlink transmission on the same time-frequency resource, then full-duplex communication is achieved, but interference between scheduled terminals increases
Solution Approach 1:
The station acts as an intermediary that coordinates between transmitting and receiving terminals. It receives sounding signals from terminals, processes interference information, and makes scheduling decisions to enable full-duplex operation while managing interference through intelligent resource allocation and power control
Data Source
AI summary
Embodiments of the present invention relate to a terminal scheduling method, a station, and a terminal. The method includes: sending, by a first station, a first notification message to a first terminal that is also in a first service set, where the first notification message is used to instruct the first terminal to send a sounding signal; receiving, by the first station, mutual interference information sent by a second terminal, where the mutual interference information includes a signal parameter value used to represent that signal interference is generated between the second terminal and the first terminal and identifier information used to determine the first terminal that sends the sounding signal, and the mutual interference information is sent if the second terminal obtains the sounding signal by means of listening; and performing, by the first station, scheduling processing on the first terminal and the second terminal according to the signal parameter value and the identifier information.