Multi-subscription UE Measurement Reporting Latency Reduction
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Solution Overview
Problem
Current wireless communication systems face latency issues due to the need for user equipment (UE) to tune away from one wireless network to another for measurement reporting, which delays scheduled measurement requests and handover commands, degrading network quality and speed.
Innovation Solution
The UE is configured to tune away from a first wireless network associated with a first subscription to a second wireless network and then transmit a measurement report back to the first network outside of a scheduled measurement reporting occasion, allowing for immediate reporting and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the UE transmits measurement report within the scheduled measurement reporting occasion, then the network can receive reports at regular intervals, but the latency increases when the UE needs to tune away from one network to another for measurement
Solution Approach 1:
The patent applies dynamics by allowing the measurement reporting mechanism to adapt between two modes: scheduled reporting for regular intervals and aconfigured reporting trigger-based approach for low-latency scenarios. The UE dynamically switches between these modes based on network conditions and subscription requirements, enabling flexible adjustment of reporting timing to balance latency and reliability.
Solution Approach 2:
The patent changes the parameter of reporting timing from fixed scheduled intervals to variable timing based on tune-away events. By modifying the reporting occasion parameter dynamically - either adhering to scheduled times or utilizing configured triggers after tune-away events - the system optimizes the balance between measurement accuracy and latency reduction.
2Measurement precision
If the UE tunes away from the first wireless network to the second wireless network for measurement, then the UE can perform measurements on the target cell, but the scheduled measurement reporting is delayed
Solution Approach 1:
The patent applies preliminary action by having the network side configure measurement reporting triggers in advance before the UE actually needs to perform measurements. The network configures whether the UE should report based on scheduled occasions or triggered by tune-away events, preparing the reporting mechanism beforehand so that when tune-away occurs, the UE can immediately transmit the measurement report without additional delay.
Solution Approach 2:
The patent introduces the tune-away event as an intermediary trigger mechanism between the measurement action and the reporting action. Instead of directly scheduling reports at fixed intervals, the system uses the tune-away event itself as the trigger signal, allowing the measurement report to be transmitted immediately after the measurement completes, thereby eliminating the delay between measurement completion and report transmission.
3Productivity
If the UE uses scheduled measurement reporting occasions, then the network can plan resource allocation in advance, but the network quality and speed are degraded due to increased latency in handover commands
Solution Approach 1:
The patent applies dynamics by enabling the measurement reporting system to adapt between scheduled and trigger-based modes according to network conditions. This dynamic adjustment allows the network to optimize productivity - using scheduled reporting when stability is prioritized and trigger-based reporting when speed is critical, thereby improving overall network throughput without excessive complexity.
Solution Approach 2:
The patent changes the reporting timing parameter from fixed to variable based on network needs. By allowing the network to configure different reporting behaviors (scheduled vs. trigger-based) and adjust these parameters dynamically, the system optimizes the balance between resource allocation planning and network speed, improving productivity while managing configuration complexity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may tune away from a first wireless network associated with a first subscription of the UE to a second wireless network associated with a second subscription of the UE. The UE may transmit, after tuning back to the first wireless network, a measurement report, outside of a scheduled measurement reporting occasion for the first wireless network. Numerous other aspects are provided.