Adaptive RRM Measurement Gaps for Latency-Sensitive Traffic
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Solution Overview
Problem
Measurement gaps for radio resource management (RRM) measurements in wireless communications systems interfere with latency-sensitive traffic, such as extended reality (XR) and virtual reality (VR), leading to increased transmission time and poor user experience due to the higher priority given to RRM measurements over data traffic.
Innovation Solution
Implementing techniques that utilize resource status reports from neighbor cells to determine the activation status of RRM measurements and measurement gaps, allowing the UE to deactivate certain measurements and gaps based on resource usage, thereby reducing interruptions for latency-sensitive traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RRM measurements are performed with high priority to ensure network reliability and mobility management, then measurement accuracy and handover reliability are improved, but transmission time for latency-sensitive traffic increases and user experience deteriorates
Solution Approach 1:
The patent applies dynamics by making the RRM measurement configuration adaptive rather than static. The network entity dynamically adjusts measurement gap configurations based on real-time traffic conditions, specifically deactivating measurements for neighbor cells with high resource usage when latency-sensitive traffic is detected. This allows the system to switch between maintaining high handover reliability and minimizing transmission delays based on current network state.
Solution Approach 2:
The patent changes the parameter of measurement activation status from a fixed state to a variable state controlled by resource status reports. By monitoring resource usage parameters of neighbor cells and adjusting the activation status of RRM measurements accordingly, the system optimizes the trade-off between measurement reliability and traffic latency. When resource usage exceeds thresholds, measurement parameters are changed to reduce interruptions.
2Reliability
If RRM measurements are continuously performed for all neighbor cells to ensure comprehensive network coverage and mobility management, then measurement coverage and handover reliability are improved, but transmission interruptions increase and latency-sensitive traffic performance deteriorates
Solution Approach 1:
The patent segments the set of neighbor cells into active and inactive measurement groups based on resource status reports. Instead of continuously measuring all neighbor cells, the network entity divides them into subsets - those with sufficient resources that require continuous monitoring for handover reliability, and those with high resource usage that can be temporarily deactivated to improve data transmission efficiency. This segmentation allows selective measurement based on current network conditions.
Solution Approach 2:
The patent applies partial action by performing RRM measurements only on a subset of neighbor cells that are currently active, rather than all configured neighbor cells. When resource status reports indicate high usage on certain cells, measurements for those cells are partially suspended. This partial measurement approach maintains sufficient handover reliability for available cells while reducing overall transmission interruptions and improving latency-sensitive traffic performance.
3Adaptability or versatility
If measurement gaps are configured to allow UE to perform RRM measurements on neighbor cells, then mobility management capability is improved, but interruptions in latency-sensitive traffic increase and transmission time increases
Solution Approach 1:
The patent makes measurement gap configuration dynamic by allowing the network entity to activate or deactivate measurement gaps based on traffic type and neighbor cell resource status. When latency-sensitive traffic is detected and neighbor cells show high resource usage, the system dynamically adjusts gap configurations to minimize interruptions. This dynamic adaptation maintains mobility management capability when needed while reducing transmission time losses for critical traffic.
Solution Approach 2:
The patent implements feedback mechanisms where the network entity monitors both traffic characteristics and neighbor cell resource status, then uses this feedback to adjust measurement gap configurations. Resource status reports from neighbor cells provide feedback on their availability, which feeds back into the measurement gap activation decisions. This closed-loop control allows the system to optimize between mobility management and transmission latency based on real-time conditions.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for enhanced radio resource management (RRM) measurements for latency-sensitive traffic. A method performed by a network entity may include transmitting, to a user equipment (UE), configuration information indicating: one or more neighbor cells for which to perform RRM measurements and a measurement gap configuration indicating one or more measurement gaps for performing the RRM measurements. The network entity may receive one or more resource status reports from the one or more neighbor cells, indicating an amount of resources being used at a respective neighbor cell of the one or more neighbor cells. The network entity may transmit, to the UE based on the one or more resource status reports received from the one or more neighbor cells, a message indicating an activation status associated with at least one of the RRM measurements or the one or more measurement gaps.