Selective DMRS Grouping for Full Duplex Phase Coherency
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Solution Overview
Problem
Interference and congestion in wireless communication networks due to increased demand for mobile broadband access and deployment of more UEs, leading to degraded performance on both downlink and uplink transmissions.
Innovation Solution
Selective grouping of demodulation reference signals (DMRSs) based on full duplex resource configurations, allowing for either bundling or sharing of DMRSs when conditions are met, and avoiding such grouping when conditions are not satisfied to maintain phase coherency and enhance channel estimation and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If DMRS grouping is applied to enhance channel estimation, then channel estimation quality is improved, but phase coherency is degraded
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the DMRS grouping configuration based on full duplex resource characteristics. The system changes the grouping parameter (whether to bundle or share DMRSs) according to the specific resource allocation conditions, allowing optimal channel estimation while preserving phase coherency when resources permit
Solution Approach 2:
The patent implements dynamics by making the DMRS grouping strategy adaptive rather than fixed. The system dynamically selects between bundling and sharing approaches based on real-time full duplex resource configurations, enabling the system to optimize performance under varying network conditions while maintaining phase coherence when necessary
2Adaptability or versatility
If more UEs access wireless networks to meet broadband demand, then service availability is improved, but network interference increases
Solution Approach 1:
The patent applies merging by combining multiple DMRSs into bundled groups or sharing them across slots when full duplex resources are available. This merging approach increases the effective resource utilization and service capacity to support more UEs while the selective application based on resource conditions helps manage interference levels
3Quantity of substance
If DMRS bundling is performed to share resources, then resource availability is improved, but channel estimation accuracy is degraded
Solution Approach 1:
The patent applies local quality by differentiating the treatment of DMRSs based on specific full duplex resource conditions. When resources satisfy the defined conditions, bundling is applied to improve resource availability; when conditions are not met, individual DMRS treatment is maintained to preserve estimation accuracy. This localized differentiation optimizes both objectives
Data Source
AI summary
A method of wireless communication includes receiving, by a user equipment (UE) device, control information indicating a condition associated with a demodulation reference signal (DMRS) grouping characteristic of a DMRS that is to be wirelessly communicated using one or more physical (PHY) channels. The method further includes performing the wireless communication based on the DMRS grouping characteristic indicated by the control information. The wireless communication is performed in response to detecting, by the UE device, that a first full duplex resource configuration associated with a first slot of a plurality of slots of a wireless communication and a second full duplex resource configuration associated with a second slot of the plurality of slots satisfy the condition.