Measurement Gap Collision Resolution in 5G UEs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing measurement gaps and prioritizing positioning reference signal (PRS) processing, leading to potential collisions and reduced positioning accuracy due to the lack of effective collision resolution mechanisms for multiple measurement gap configurations.
Innovation Solution
A method for user equipment (UE) to receive and manage measurement gap configurations through RRC messages and MAC-CEs, performing collision resolution operations based on support for single or multiple measurement gap configurations, and prioritizing PRS processing windows to optimize PRS processing over other downlink signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple measurement gap configurations are implemented with different signaling mechanisms (RRC messages and MAC-CEs), then the UE's ability to manage measurement gaps and prioritize PRS processing is improved, but the device complexity and signaling overhead increase
Solution Approach 1:
The patent implements dynamic measurement gap configuration where the UE can be configured with multiple measurement gap patterns through RRC messages and activated selectively via MAC-CEs. This allows the system to adapt measurement gap behavior based on current positioning requirements, switching between different gap configurations dynamically rather than using a fixed single configuration
Solution Approach 2:
The patent segments the measurement gap configuration into multiple independent configurations (first measurement gap configuration, second measurement gap configuration), each with its own parameters and activation state. This segmentation allows the UE to manage multiple gap patterns simultaneously and select appropriate ones based on positioning needs, reducing the complexity of managing a single monolithic configuration
2Measurement precision
If PRS processing windows are prioritized over other downlink signals, then positioning accuracy is improved, but the loss of other downlink signal reception increases
Solution Approach 1:
The patent establishes PRS processing windows in advance through configuration, during which the UE is pre-instructed to prioritize PRS reception and processing. This preliminary action ensures that when PRS signals are expected, the UE is already in the correct state to capture them with high accuracy, before any potential collisions with other downlink signals occur
Solution Approach 2:
The patent changes the reception parameters dynamically by switching between different measurement gap configurations and activating specific PRS processing windows. When a PRS processing window is active, the UE modifies its reception behavior to prioritize PRS, and when inactive, it returns to normal downlink signal reception, thus adapting parameters based on positioning requirements
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives, from a base station, a first measurement gap configuration via one or more first radio resource control (RRC) messages, the first measurement gap configuration including one or more first parameters specifying one or more repetitions of a first measurement gap, receives, from the base station, an activation of a second measurement gap configuration via one or more medium access control control elements (MAC-CEs), the second measurement gap configuration including one or more second parameters specifying one or more repetitions of a second measurement gap, and performs, based on a collision between the one or more repetitions of the first measurement gap and the one or more repetitions of the second measurement gap, a collision resolution operation based on whether the UE supports a single measurement gap configuration or multiple measurement gap configurations.