Uplink Reference Signal Bundling Across Skipped Transmission Occasions
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in demodulation reference signal bundling due to breaks in phase continuity and power consistency caused by skipped uplink transmission occasions, leading to suboptimal channel estimation and decoding.
Innovation Solution
Implementing techniques for demodulation reference signal bundling across unused transmission occasions, where a skipping indication is transmitted by the user equipment (UE) to unbundle reference signals when phase continuity or power consistency is broken, allowing for independent decoding and channel estimation of each transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signal bundling is applied across multiple uplink transmission occasions, then channel estimation accuracy is improved, but system reliability deteriorates when phase continuity or power consistency is broken by skipped transmissions
Solution Approach 1:
The system dynamically adjusts reference signal bundling configuration based on transmission status. When a transmission occasion is skipped, the system detects the phase continuity break and dynamically unbundles the reference signals for subsequent transmissions, allowing flexible adaptation to varying transmission conditions while maintaining both channel estimation accuracy and decoding reliability
Solution Approach 2:
The system changes the bundling parameter of reference signals based on detected phase continuity and power consistency. When breaks are detected due to skipped transmissions, the bundling parameter is modified to unbundle reference signals, ensuring that channel estimation and decoding operations are performed with appropriate signal configurations that match actual transmission conditions
2Productivity
If skipped uplink transmission occasions are indicated to the network, then resource allocation efficiency is improved, but reference signal bundling complexity increases
Solution Approach 1:
The system implements feedback mechanisms where the UE indicates skipped transmission occasions to the network. This feedback information is then used to adjust reference signal bundling configurations, enabling the network to optimize resource allocation while managing processing complexity through informed decision-making based on actual transmission status
Data Source
AI summary
Methods, systems, and devices for wireless communications are described that provide for reference signal bundling across two or more uplink transmissions that are transmitted in accordance with an uplink grant configuration of uplink resources for multiple uplink transmission occasions. In the event that a user equipment (UE) does not have data to be transmitted in one of the uplink transmission occasions, the UE may transmit a skipping indication that one or more uplink transmission occasions are to be skipped. A reference signal transmitted with a subsequent uplink transmission after the skipped uplink transmission occasion may be bundled or unbundled with a prior reference signal transmission based on whether the skipped uplink transmission breaks a phase continuity of uplink transmissions, a power consistency of uplink transmissions, or both.