Tracking Reference Signal Configuration for Wireless Synchronization
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Solution Overview
Problem
In wireless communication networks, user equipment operating in idle or inactive modes experience inefficiencies due to challenges in tracking reference signal configurations, leading to inaccurate time and frequency synchronization and increased power consumption.
Innovation Solution
The implementation of tracking reference signal (TRS) configurations, including the transmission and reception of TRS occasions, allows user equipment to monitor paging physical downlink control channels more efficiently by providing additional reference signals for automatic gain control, time and frequency tracking, and radio resource management, thereby improving power saving and tracking accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If user equipment operates in idle or inactive mode without tracking reference signal configuration, then power consumption is reduced, but time and frequency synchronization accuracy deteriorates
Solution Approach 1:
The patent implements periodic transmission of tracking reference signals at configured intervals during idle/inactive modes. This allows user equipment to perform time and frequency tracking at periodic intervals rather than continuously, maintaining synchronization accuracy while significantly reducing power consumption compared to continuous operation.
Solution Approach 2:
The network entity configures tracking reference signal occasions in advance before the user equipment needs to monitor paging. This preliminary configuration allows the user equipment to prepare tracking parameters ahead of time, enabling accurate synchronization without requiring continuous active monitoring, thus resolving the contradiction between power saving and tracking accuracy.
2Measurement precision
If tracking reference signal configuration is implemented, then time and frequency tracking accuracy is improved, but device complexity increases
Solution Approach 1:
The tracking reference signal configuration serves multiple functions simultaneously: it enables time tracking, frequency tracking, automatic gain control, and serves as a basis for paging monitoring. By making the reference signal configuration multi-functional, the patent reduces the need for separate dedicated signals for each function, thereby limiting the increase in device complexity while achieving improved tracking accuracy.
3Productivity
If tracking reference signal occasions are configured, then radio resource management is improved, but loss of time increases
Solution Approach 1:
The patent configures tracking reference signals to be transmitted periodically at optimized intervals. This periodic transmission allows the network to allocate time resources efficiently, performing tracking and resource management at appropriate intervals without requiring continuous time consumption, thus improving radio resource management while limiting time loss.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for tracking reference signal configuration. One method (700) includes receiving (702) a tracking reference signal configuration. The method (700) includes receiving (704) a tracking reference signal on a tracking reference signal occasion of a plurality of tracking reference signal occasions. The plurality of tracking reference signal occasions is based on the tracking reference signal configuration. The method (700) includes monitoring (706) a paging physical downlink control channel on at least one paging physical downlink control channel monitoring occasion based on the tracking reference signal. The at least one paging physical downlink control channel monitoring occasion is associated with the tracking reference signal occasion.