Narrow BWP Hopping Measurement Without Gaps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in measurement reliability and latency due to frequency hopping patterns that result in gaps during synchronization signal block (SSB) measurements, especially for UEs that dynamically hop within the frequency domain, leading to ambiguous active bandwidth parts (BWP) for measurement purposes.
Innovation Solution
The system aligns measurement windows with active frequency hops within the BWP, allowing UEs to perform SSB measurements without gaps by defining an active BWP as an aggregate of non-overlapping frequency hops or a single hop used during measurement windows, and adjusts hop durations to align with measurement windows, ensuring continuous data reception and measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If frequency hopping patterns are used for BWP hopping, then frequency diversity and robustness are improved, but measurement gaps are introduced causing measurement reliability to deteriorate
Solution Approach 1:
The patent segments the frequency hopping pattern into distinct measurement windows and non-measurement portions. During measurement windows, the UE pauses frequency hopping to perform SSB measurements on a specific frequency, while outside these windows, normal frequency hopping continues. This segmentation allows both frequency diversity (through hopping) and measurement reliability (through dedicated measurement windows) to coexist.
Solution Approach 2:
The patent establishes measurement windows in advance where frequency hopping is suspended or controlled to ensure SSB measurements can be performed without gaps. The network configures the UE with specific measurement window timings and associated frequency locations before measurements begin, allowing the UE to prepare and execute measurements reliably without interrupting overall frequency hopping operation.
2Stability of the object's composition
If frequency hopping is performed during SSB measurements, then frequency diversity is improved, but measurement latency increases due to gaps
Solution Approach 1:
The patent implements periodic measurement windows within the frequency hopping pattern at predetermined intervals. These measurement windows occur regularly at configured timings where the UE temporarily suspends frequency hopping to perform SSB measurements. This periodic approach ensures frequency diversity is maintained over time while minimizing measurement latency through regular, predictable measurement opportunities.
Solution Approach 2:
The patent maintains continuous frequency hopping operation outside of measurement windows, ensuring that frequency diversity benefits are continuously realized. During measurement windows, frequency hopping is temporarily paused only for the minimal duration needed to complete SSB measurements, after which hopping resumes. This minimizes the interruption to the useful frequency hopping action and reduces overall measurement latency.
3Productivity
If dynamic BWP hopping is implemented, then spectral efficiency is improved, but ambiguity in active BWP identification increases
Solution Approach 1:
The patent implements feedback mechanisms where the network provides downlink control information (DCI) to the UE that explicitly identifies which BWP is active during each time interval. The network monitors and controls BWP switching, providing feedback signals that clarify the active BWP state to the UE, eliminating ambiguity while maintaining dynamic BWP hopping for spectral efficiency.
Solution Approach 2:
The patent establishes predetermined associations between measurement windows and specific frequency locations or BWPs before measurements begin. The network configures the UE with advance information about which BWP will be active during each measurement window, allowing the UE to identify the active BWP without ambiguity. This preliminary configuration maintains dynamic BWP hopping while ensuring clear identification during measurements.
Data Source
AI summary
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for measurement without gaps for narrow bandwidth part (BWP) hopping. A user equipment (UE) may measure one or more synchronization signal blocks (SSBs) while performing BWP hopping according to a hopping pattern. The UE may receive data and measure an SSB in a same frequency hop during a same measurement window without a gap. A base station (BS) may transmit a control message to the UE to configure an active BWP for the UE, a set of measurement windows, a hopping pattern, and a set of SSBs that occur within a set of frequency hops to support the measurement without gaps. The active BWP may be defined for measurement purposes to reduce ambiguity. The control message may support alignment of a measurement window with an active frequency hop to support measurement without gaps.