Reference Signal Measurement for Efficient Uplink Reporting
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Solution Overview
Problem
Communication devices in wireless networks face challenges in handling uplink transmissions during cell or beam switch procedures due to the lack of clear indications from the network, leading to inefficient use of UL resources.
Innovation Solution
A method and device for uplink transmission that involves receiving a configuration of reference signals, performing measurements, and transmitting UL channels only when specific conditions are met, allowing for conditional reporting of measurement reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic measurement report transmission is performed, then the network can obtain beam/cell measurement information, but uplink resources are wasted due to unnecessary reporting when no cell/beam switch is needed
Solution Approach 1:
The patent implements dynamic measurement report transmission by introducing a trigger mechanism that adapts the reporting behavior based on network conditions. The communication device transitions from static periodic reporting to dynamic event-triggered reporting, where reports are transmitted only when specific conditions are met (e.g., when beam quality degrades below a threshold or when a better beam is detected). This dynamic approach ensures reliable measurement information is provided while avoiding unnecessary uplink resource consumption during stable conditions.
Solution Approach 2:
The patent changes the transmission parameter from fixed periodic intervals to condition-based triggering. The measurement report transmission is controlled by monitoring parameters such as reference signal received power (RSRP), reference signal received quality (RSRQ), or signal-to-interference-plus-noise ratio (SINR) of beam reference signals. When these parameters cross predefined thresholds or show significant changes, the reporting behavior changes from dormant to active, optimizing the balance between reliability and resource efficiency.
2Ease of operation
If the communication device waits for cell/beam switch indication from the network, then it can avoid unnecessary switching, but it cannot proactively perform switching when needed
Solution Approach 1:
The patent implements a feedback mechanism where the communication device continuously monitors beam reference signal qualities and compares them against predefined thresholds or hysteresis margins. This feedback loop enables the device to detect degradation in serving beam quality or identification of superior alternative beams, triggering proactive cell/beam switch indications to the network. The feedback ensures operationally simple control while maintaining high responsiveness to channel conditions.
Solution Approach 2:
The patent enables preliminary action by allowing the communication device to perform measurements and evaluate beam qualities in advance, maintaining a pool of candidate beams with their measured qualities. When the serving beam quality degrades or a significantly better candidate is identified, the device can immediately trigger a cell/beam switch indication without waiting for network polling or indication. This preliminary preparation ensures both ease of operation and rapid responsiveness when switching is needed.
3Reliability
If the communication device transmits UL channels frequently, then it can ensure timely network communication, but it increases UL resource consumption and reduces resource efficiency
Solution Approach 1:
The patent transforms continuous or frequent periodic uplink transmissions into event-triggered transmissions. Instead of transmitting UL channels at fixed intervals regardless of need, the device monitors specific triggering conditions such as beam quality thresholds, measurement report readiness, or cell switch indications. UL channel transmission occurs periodically only when these conditions are met, ensuring reliable uplink communication for critical events while dramatically reducing resource consumption during stable periods when no events occur.
Data Source
AI summary
A method for a communication device for a communication device handling uplink (UL) transmission includes: receiving a configuration from a network, wherein the configuration comprises a set of reference signals (RSs); performing at least one measurement for the set of RSs, to generate a measurement report; transmitting a first UL channel to the network in response to at least one RS of the set of RSs satisfying a condition; and transmitting a second UL channel comprising the measurement report to the network.