Measurement Gap Signaling for FR1-FR2 Scheduling Flexibility
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Solution Overview
Problem
Existing wireless communication systems require unnecessary measurement gaps in frequency range 2 (FR2) even when no data signaling is occurring, leading to inefficient scheduling and alignment restrictions in FR1 and FR2 operations.
Innovation Solution
Implementing per-frequency range (per-FR) measurement gaps to allow independent measurement in FR1 and FR2 without pausing operations in the other frequency range, and enabling UE to indicate per-FR capability and fall back to per-UE gaps when baseband capability is exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If per-UE measurement gaps are used, then measurement capability is maintained, but scheduling flexibility is reduced and alignment restrictions are imposed
Solution Approach 1:
The patent divides the measurement gap configuration into two independent types: per-UE measurement gaps and per-FR measurement gaps. This segmentation allows the system to choose the appropriate gap type based on specific needs, thereby maintaining measurement capability while improving scheduling flexibility. Per-FR gaps enable independent measurement configuration for FR1 and FR2 without affecting the other frequency range.
Solution Approach 2:
The patent introduces dynamic capability indication where the UE signals its support for per-FR measurement gaps to the network. This dynamic mechanism allows the system to adapt between per-UE and per-FR gap modes based on UE capability and network conditions, resolving the contradiction between measurement reliability and scheduling flexibility.
2Adaptability or versatility
If per-FR measurement gaps are implemented, then scheduling flexibility is improved, but baseband capability requirements increase
Solution Approach 1:
The patent implements a capability indication mechanism where the UE provides feedback to the network about its support for per-FR measurement gaps. This feedback loop allows the network to dynamically select the appropriate gap type based on UE capability, thereby enabling scheduling flexibility without forcing complex baseband requirements on all UEs.
Solution Approach 2:
The patent changes the measurement gap configuration parameter from a fixed per-UE approach to a flexible per-FR approach. This parameter change allows independent configuration of measurement gaps for different frequency ranges, improving scheduling flexibility while allowing UEs to indicate their capability level to manage baseband resource requirements.
3Measurement precision
If measurement gaps are required in FR2, then measurement accuracy is maintained, but communication efficiency is reduced
Solution Approach 1:
The patent segments measurement gap requirements by frequency range, allowing FR1 and FR2 to have independent measurement gap configurations. This enables measurement accuracy to be maintained in FR2 through per-FR gaps while avoiding unnecessary gaps in FR1, thereby improving overall communication efficiency.
Solution Approach 2:
The patent applies partial measurement gaps only where necessary (in FR2 when measuring FR2 objects) rather than applying excessive per-UE gaps across all frequency ranges. This partial action approach maintains measurement accuracy in FR2 while avoiding the communication efficiency penalty of unnecessary gaps in FR1.
Data Source
AI summary
Systems and methods for measurement gap signaling are described herein. A user equipment (UE) receives, from a network, a configuration for one or more measurement objects (MOs) at the UE and identifies any overlimit MOs (for which using per-frequency range (FR) measurement gaps would cause the UE to exceed a component carrier (CC) limitation of the UE) from among the one or more configured MOs. Upon identifying one or more such overlimit MOs, the UE sends the network a measurement gap instruction message configured to cause the network to use per-UE measurement gaps (rather than per-FR measurement gaps) corresponding to the overlimit MOs. An indication to use per-UE measurement gaps in the measurement gap instruction message may be made on a per-MO, per-CC, per-band, per FR, or per-band combination basis. In some cases, the measurement gap instruction message causes the network to use per-UE measurement gaps for all configured MOs.