Dynamic Measurement Gap Configuration for 5G Mobility
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in maintaining reliable data transmission and reception, particularly during measurement gaps, which can lead to service disruptions for mission-critical services requiring low latency and high reliability, especially when the radio link quality degrades, and existing LTE/LTE-A systems struggle to manage inter-frequency measurements effectively.
Innovation Solution
A method that involves configuring a changeable measurement gap based on the mobility state of user equipment (UE), allowing for the transmission and reception of data during specific sections of the measurement gap, and adjusting the measurement gap configuration dynamically to ensure continuous service availability by skipping or shortening the measurement gap when necessary, thereby preventing service disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gap is configured for inter-frequency measurement in LTE/LTE-A systems, then measurement capability is improved, but data transmission and reception are interrupted during the measurement gap
Solution Approach 1:
The patent applies dynamics by making the measurement gap configuration changeable based on UE mobility state. The network can dynamically adjust or skip measurement gaps according to real-time mobility conditions, transitioning from a static to a dynamic measurement gap management approach that adapts to varying service requirements.
Solution Approach 2:
The patent implements parameter changes by modifying the measurement gap configuration parameters (presence, duration, periodicity) based on UE mobility state. The network node changes these parameters dynamically to balance measurement needs with service continuity requirements, particularly for high-mobility scenarios where service availability is prioritized.
2Measurement precision
If measurement gap is applied continuously to ensure measurement accuracy, then measurement precision is improved, but service latency increases for mission-critical services
Solution Approach 1:
The patent applies partial action by implementing measurement gaps selectively rather than continuously. Measurement gaps are applied only when needed based on UE mobility state and service type, allowing the system to achieve sufficient measurement accuracy while minimizing the time loss for mission-critical services that require low latency.
Solution Approach 2:
The patent uses dynamics to adjust measurement gap application in real-time based on mobility conditions. For high-mobility UEs or time-critical services, measurement gaps are reduced or skipped entirely, while for low-mobility scenarios, measurement gaps are maintained to ensure accuracy, creating a dynamic balance between measurement precision and service latency.
3Device complexity
If same measurement gap configuration is applied to all base stations, then system simplicity is maintained, but service continuity is disrupted when serving base station link degrades
Solution Approach 1:
The patent applies segmentation by dividing the measurement gap configuration into separate, independent configurations for serving base station and alternative base stations. This allows each base station to have optimized measurement gap settings tailored to its specific role and link conditions, enabling faster activation of alternative links when serving link degrades without being constrained by a unified configuration.
Data Source
AI summary
The present disclosure provides a method for transmitting and receiving data in a wireless communication system. Particularly, the method performed by a user equipment (UE) includes performing a measurement in a measurement gap; receiving a first indication information that instructs to report a mobility state of the UE from a base station (BS); transmitting a second indication information that represents a mobility state to the BS; receiving control information related to a configuration change of the measurement gap from the BS; and transmitting and receiving data for a specific service with the BS in whole or a specific section of the measurement gap based on the received control information, thereby satisfy the requirement of low latency/high reliability requested in 5G.