Uplink Resource Timing for Low-Overhead Channel Estimation
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Solution Overview
Problem
Uplink coverage is limited in high-frequency communication systems, and increasing DMRS density to improve channel estimation quality leads to increased resource overheads and reduced spectrum utilization.
Innovation Solution
Control phase and power deviations within threshold ranges for uplink transmission parts to enable longer filtering times without adding additional DMRS, enhancing channel estimation quality and uplink coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional DMRS is configured to improve channel estimation quality, then uplink coverage is enhanced, but DMRS resource overheads are increased and uplink spectrum utilization is affected
Solution Approach 1:
The patent changes the parameter of time period duration for uplink transmission, extending it to enable longer filtering at the access network device. This allows improved channel estimation quality through temporal filtering without requiring additional DMRS resources, thus resolving the contradiction between measurement precision and resource overhead.
2Measurement precision
If additional DMRS is configured to improve channel estimation quality, then uplink coverage is enhanced, but uplink spectrum utilization is reduced
Solution Approach 1:
The patent extends the time period parameter for uplink transmission to enable longer filtering duration. This allows the access network device to improve channel estimation quality through temporal filtering without adding more DMRS, thereby maintaining uplink spectrum utilization while enhancing measurement precision.
3Measurement precision
If filtering time is extended to improve channel estimation quality, then uplink coverage is enhanced, but phase and power deviations may exceed acceptable ranges
Solution Approach 1:
The patent dynamically adjusts the time period duration for uplink transmission based on phase and power deviation thresholds. By making the time period adaptable rather than fixed, the system can extend filtering time to improve channel estimation quality while ensuring that phase and power deviations remain within acceptable ranges, thus resolving the contradiction between measurement precision and reliability.
Data Source
AI summary
An uplink transmission method includes receiving a first message that is used to configure a first uplink resource. The method also includes performing uplink transmission on the first uplink resource. The first uplink resource includes at least a first part and a second part in a first time period, a phase deviation of uplink transmission between the first part and the second part falls within a first threshold range, or a power deviation of uplink transmission between the first part and the second part falls within a second threshold range. The first time period is a duration between a start time and an end time of the first uplink resource in a first time length, or a duration between a start time and an end time of the first uplink resource in a first transmit opportunity.