Uplink DMRS Pattern Signaling for Flexible Channel Adaptation
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Solution Overview
Problem
The existing NR system faces challenges in flexibly configuring DMRS patterns due to the lengthy RRC connection establishment process, which hinders timely adaptation to channel changes and increases bit overheads.
Innovation Solution
The DMRS pattern configuration is implicitly indicated using MCS information, higher layer signaling, or downlink control information, allowing for flexible adaptation to channel changes and reducing bit overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communication resources are allocated based on proportional fairness using traditional algorithms, then system stability is maintained, but communication efficiency deteriorates due to ignoring channel conditions and device priorities
Solution Approach 1:
The patent implements dynamic communication resource allocation by continuously adjusting resource distribution based on real-time channel conditions and device priorities. The allocation algorithm transitions from static proportional fairness to dynamic optimization, where resource blocks are adaptively assigned to maximize system throughput while maintaining stability through controlled parameter adjustments.
Solution Approach 2:
The patent changes key allocation parameters including channel quality indicators, device priority weights, and resource block assignments. By dynamically modifying these parameters based on current system state, the algorithm achieves both high communication efficiency and stable operation, resolving the contradiction between aggressive optimization and system stability.
2Productivity
If communication resources are allocated without considering device priorities, then allocation simplicity is maintained, but communication efficiency deteriorates due to inability to differentiate between devices with different quality requirements
Solution Approach 1:
The patent applies local quality differentiation by assigning different priority weights to different devices based on their specific requirements. High-priority devices receiving quality-sensitive services get preferential resource allocation, while other devices use standard allocation. This localized differentiation improves overall communication efficiency without requiring complete reconfiguration of the allocation system.
Solution Approach 2:
The patent segments the device population into different priority groups or categories based on service requirements. By dividing devices into segments with different allocation strategies, the system achieves efficient resource distribution for diverse device types while maintaining manageable algorithmic complexity through modular processing of each segment.
3Productivity
If channel conditions are not considered in resource allocation, then allocation speed is maintained, but communication efficiency deteriorates due to mismatch between resource allocation and actual channel quality
Solution Approach 1:
The patent performs preliminary actions by pre-processing channel condition data and device priority information before the actual resource allocation decision. Channel quality metrics are evaluated and cached in advance, and device priorities are pre-established based on service type. This preliminary preparation enables rapid allocation decisions that consider full channel conditions without excessive computation time during the critical allocation moment.
Data Source
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AI summary
This application discloses a communication method and apparatus, and relates to the communication field, to resolve a problem of how to flexibly configure a DMRS pattern. The method includes: determining, by a terminal device, at least one parameter based on first MCS information after receiving the first MCS information, where the at least one parameter is used to indicate a first reference signal pattern, so that the terminal device sends an uplink reference signal based on the first reference signal pattern; and determining, by a network device, the at least one parameter based on the first MCS information, where the at least one parameter is used to indicate the first reference signal pattern, so that the network device receives the uplink reference signal based on the first reference signal pattern.