Carrier Group Measurement Using a Reference Carrier
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in carrier measurement due to linear scaling of measurement delays, which impact mobility performance, throughput, and latency, particularly in scenarios with a large number of frequency layers.
Innovation Solution
Implementing group-based carrier measurements where a reference carrier is selected for each group, adjusting the carrier-specific scaling factor (CSSF) to optimize measurement efforts, reducing unnecessary measurements when a cell is not detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If linear scaling of measurement delays is applied to all carriers, then measurement precision is maintained, but productivity decreases due to excessive measurement time
Solution Approach 1:
The patent segments carriers into groups with a reference carrier and non-reference carriers. Measurement resources are allocated differently to each segment: reference carriers receive full measurement resources to maintain precision, while non-reference carriers use reduced measurement resources. This segmentation resolves the contradiction by maintaining measurement precision for critical carriers while improving overall network productivity through reduced total measurement time.
2Reliability
If measurements are performed on all carriers, then reliability of mobility decisions is improved, but loss of time increases due to extensive measurement delays
Solution Approach 1:
The patent extracts the essential measurement function from non-reference carriers, performing reduced measurements that capture sufficient information for mobility decisions. Reference carriers maintain full measurement capabilities. This extraction approach maintains reliability by preserving critical measurement data while reducing total measurement time, directly addressing the contradiction between reliability and time loss.
Solution Approach 2:
The patent applies partial measurement action to non-reference carriers, performing only the minimum necessary measurements rather than full measurements. This partial action approach maintains adequate reliability for mobility decisions while significantly reducing measurement delays, resolving the contradiction between reliability and time loss.
3Measurement precision
If carrier-specific scaling factor is applied to each carrier individually, then measurement precision is maintained, but device complexity increases
Solution Approach 1:
The patent merges the measurement configuration for non-reference carriers into a unified group managed by the reference carrier. Instead of individually configuring CSSF for each carrier, the system applies a group-level configuration where the reference carrier's measurement parameters serve as the baseline for the entire group. This merging reduces device complexity while maintaining measurement precision through the reference carrier's full measurement capabilities.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a group of carriers with corresponding measurement objects and a reference carrier for the group. The UE may transmit a measurement report for the reference carrier based at least in part on detecting a cell of the reference carrier. Numerous other aspects are described.