Positioning Signal Frequency Hop Aggregation for 5G UE
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G wireless communication systems face challenges in achieving high spectral efficiency, reducing latency, and improving positioning accuracy for mobile devices, particularly in determining the location of user equipment (UE) using positioning reference signals (PRS).
Innovation Solution
The implementation of user equipment (UE) capable of coherently combining positioning reference signal portions across different frequency sub-bands to determine position information, including transmitting capability messages or signal-combination indications to network entities, indicating processing capabilities for combining PRS portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning reference signal portions are processed separately in different frequency sub-bands, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent segments the positioning reference signal processing by dividing frequency sub-bands into different groups based on processing capability. The UE can indicate which frequency sub-bands it can process separately and which can be coherently combined, allowing the network to allocate PRS resources appropriately without requiring full coherent combination capability across all sub-bands.
Solution Approach 2:
The patent introduces dynamic processing capability indication where the UE can flexibly indicate its coherent combination capability through capability messages and signal-combination indications. This allows the processing complexity to adapt dynamically based on UE capabilities, network conditions, and positioning requirements, rather than being fixed.
2Measurement precision
If coherent combination of positioning reference signal portions is performed, then positioning accuracy is improved, but processing time increases
Solution Approach 1:
The patent implements preliminary action by having the UE indicate its coherent combination capability in advance through capability messages before actual positioning measurements. The network uses this pre-indicated capability to configure PRS resources and scheduling appropriately, so that when positioning measurements are performed, the UE is already prepared to process the signals efficiently without additional setup time.
Solution Approach 2:
The patent changes the processing parameter by allowing selective coherent combination of only those frequency sub-bands for which the UE has indicated capability. Instead of requiring coherent combination across all sub-bands, the system processes only the capable sub-bands together, reducing overall processing time while maintaining positioning accuracy through the combined signal from multiple sub-bands.
3Productivity
If frequency sub-bands are processed in combination, then spectral efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements universality by designing a capability indication mechanism that works across different UE types and network configurations. The same capability message framework and signal-combination indication approach can be used regardless of the specific number of frequency sub-bands or UE processing capabilities, making the solution universally applicable while allowing each UE to operate within its own complexity constraints.
Solution Approach 2:
The patent introduces an intermediary capability indication mechanism that mediates between the network's desire for high spectral efficiency through coherent combination and the UE's processing capabilities. The capability messages and signal-combination indications act as intermediaries, allowing the network to understand UE capabilities and configure resources accordingly, achieving spectral efficiency improvements without overwhelming any single UE with excessive processing requirements.
Data Source
AI summary
A method of facilitating position determination of a user equipment includes: receiving, at the user equipment, a first plurality of positioning reference signal portions having a corresponding plurality of frequency sub-bands; processing, at the user equipment, one or more of the first plurality of positioning reference signal portions to determine position information; and at least one of: transmitting a capability message, to a network entity, indicating a processing capability of the user equipment to process, in combination, positioning reference signal portions having different frequency sub-bands to determine the position information; or transmitting a signal-combination indication, to the network entity, indicating a second plurality of positioning reference signal portions, of the first plurality of positioning reference signal portions, processed by the user equipment in combination to determine the position information.