Full-Duplex Pattern Indication for Interference-Aware Coordination
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Solution Overview
Problem
In wireless communication systems, particularly in full duplex mode, there is a challenge in coordinating simultaneous uplink and downlink communications due to interference and resource allocation uncertainties, especially when base stations and user equipment operate with different duplexing capabilities, leading to lost or corrupted transmissions.
Innovation Solution
Implementing a method and apparatus for full duplex pattern indication, where user equipment and base stations exchange time domain patterns for resource allocation, including sub-band full duplex resources, to synchronize and coordinate simultaneous uplink and downlink communications, using bitmaps and frequency allocations to distinguish between different resource types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex mode is implemented for simultaneous uplink and downlink communications, then communication efficiency is improved, but interference between transmissions increases
Solution Approach 1:
The patent segments the frequency spectrum into multiple sub-bands and assigns different duplexing modes to different sub-bands. Specifically, some sub-bands operate in full duplex mode while others operate in half duplex mode, allowing simultaneous uplink and downlink communications in full duplex sub-bands while avoiding interference in half duplex sub-bands. This segmentation resolves the contradiction by enabling full duplex operation only where it does not cause harmful interference.
2Adaptability or versatility
If different duplexing capabilities are supported for base stations and user equipment, then adaptability is improved, but resource allocation uncertainty increases
Solution Approach 1:
The patent introduces a pattern indication message as an intermediary mechanism that explicitly communicates the time domain pattern for full duplex, half duplex, and flexible resources from the base station to the user equipment. This pattern indication resolves resource allocation uncertainty by providing clear, predefined rules for resource usage, allowing devices with different duplexing capabilities to coordinate their transmissions without confusion or loss of information.
3Reliability
If time domain patterns are exchanged for resource allocation coordination, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements periodic time domain patterns for resource allocation, where full duplex, half duplex, and flexible resources repeat at regular intervals defined by the pattern indication message. This periodic structure simplifies the coordination mechanism by allowing devices to predict future resource allocations based on the established pattern, reducing the complexity of real-time decision-making while maintaining high transmission reliability through consistent resource management.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a time domain pattern for a plurality of resources that includes one or more full duplex (FD) resources. The UE may communicate with a network node in accordance with the indication of the time domain pattern. Numerous other aspects are described.