DMRS Sharing Pattern Selection for Efficient Uplink Transmissions
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Solution Overview
Problem
Interference in wireless communication networks due to transmissions from neighbor base stations and other wireless RF transmitters degrades performance, particularly in scenarios with increasing mobile broadband demand and network congestion.
Innovation Solution
A method and apparatus for determining a demodulation reference signal (DMRS) sharing pattern for uplink transmissions based on specific parameters, allowing customized DMRS sharing patterns for different uplink transmissions to enhance efficiency and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If DMRS sharing patterns are customized for different uplink transmissions, then uplink transmission efficiency and performance are improved, but system complexity and configuration overhead increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting DMRS sharing patterns based on uplink transmission parameters such as modulation and coding scheme (MCS), bandwidth, and transmission power. The system selects from multiple predefined DMRS sharing patterns (e.g., pattern 0, pattern 1, pattern 2) depending on the current transmission conditions, allowing optimization of uplink efficiency without requiring complete system redesign.
Solution Approach 2:
The patent implements dynamics by making DMRS sharing patterns adaptable and configurable rather than fixed. The base station can dynamically assign different DMRS sharing patterns to different UEs or different transmissions based on real-time network conditions, UE capabilities, and traffic requirements. This dynamic configuration enables the system to respond to changing conditions while maintaining manageable complexity through standardized pattern definitions.
2Adaptability or versatility
If multiple DMRS sharing patterns are supported with parameter mapping, then adaptability to different transmission scenarios is improved, but control information overhead and processing complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the DMRS sharing pattern configuration into multiple discrete, predefined patterns (pattern 0, pattern 1, pattern 2, etc.), each optimized for specific transmission scenarios. Instead of configuring individual DMRS parameters separately, the system segments the configuration into reusable pattern templates that can be selectively applied, reducing the amount of control information needed while maintaining high adaptability.
Solution Approach 2:
The patent implements universality by designing DMRS sharing patterns that can serve multiple functions across different transmission scenarios. A single pattern configuration can be applied to various UEs and transmission types (e.g., PUSCH, PUCCH, SRS) with different parameters, allowing the same pattern to handle multiple cases. This multi-functionality reduces control overhead by avoiding redundant configuration information.
Data Source
AI summary
Wireless communication techniques leveraging DMRS sharing patterns are disclosed. A method of wireless communication includes receiving, by a user equipment (UE) device, control information. The control information indicates mapping of uplink transmission parameters to one or more demodulation reference signal (DMRS) sharing patterns. The method further includes sending an uplink transmission to a base station in accordance with a DMRS sharing pattern. The DMRS sharing pattern is selected from among the one or more DMRS sharing patterns based on one or more parameters of the uplink transmission. Other aspects and features are also claimed and described.