Full Duplex Radio Resource Muting for Self- and Cross-Interference Control
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Solution Overview
Problem
Conventional two-way communication systems face challenges in managing interference between transmit and receive signals, particularly in full duplex radio systems where simultaneous transmission and reception occur, leading to self-interference and cross-interference.
Innovation Solution
Implementing interference management techniques such as resource muting, power control, and signal prioritization to reduce interference in full duplex radio systems, including methods like RE puncturing and rate-matching to avoid collisions between transmit and receive signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex radio system implements simultaneous transmission and reception, then communication efficiency is improved, but self-interference and cross-interference increase
Solution Approach 1:
The patent segments the radio frequency spectrum into separate frequency bands for transmission and reception. By allocating different frequency ranges for uplink and downlink communications, the system enables simultaneous transmission and reception while minimizing interference between the two directions through frequency separation.
Solution Approach 2:
The patent applies local quality by implementing direction-specific interference management strategies. Different interference mitigation techniques are applied to uplink and downlink signals based on their specific interference characteristics, allowing optimized handling of self-interference and cross-interference in each communication direction.
2Reliability
If interference management techniques are implemented, then signal quality is improved, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by performing interference management operations in advance of signal reception. The system pre-processes signals to mitigate interference before it degrades signal quality, including preliminary filtering and interference cancellation operations that prepare the signal for optimal reception.
Solution Approach 2:
The patent introduces intermediary processing stages between transmission and reception that mediate the interference problem. These intermediary components include interference cancellation modules and signal processing units that act as mediators to separate and clean signals, improving quality while managing complexity through modular architecture.
Data Source
AI summary
Methods, apparatus and systems for enabling interference avoidance, for example from self and neighboring interference are disclosed. In one representative method implemented in a Wireless Transmit/Receive Unit (WTRU) using time-frequency (TF) resources in first and second directions, the method includes comprising TF resource muting or symbol muting, by the WTRU, one or more TF resources for communication in the first direction based on information associated with a communication in the second direction or subframe shortening, by the WTRU, by one or more TF resources for communication in the first direction based on information associated with a communication in the second direction.