Wireless Device Frequency Synchronization Accuracy Reporting
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR technology, face challenges in achieving accurate frequency synchronization across multiple access and backhaul networks, which can lead to performance degradation and interference.
Innovation Solution
The implementation of a method where wireless devices determine and transmit their frequency synchronization accuracy, allowing other devices to perform frequency synchronization based on this information, thereby establishing an absolute frequency reference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless devices perform frequency synchronization without exchanging accuracy information, then device complexity is reduced, but frequency synchronization accuracy deteriorates
Solution Approach 1:
The patent introduces an intermediary mechanism where a central entity (network controller or base station) collects frequency synchronization accuracy information from multiple wireless devices and distributes coordinated synchronization data. This mediator approach enables high synchronization accuracy without requiring direct peer-to-peer information exchange between all devices, thus maintaining low device complexity while achieving high network-wide frequency synchronization accuracy.
Solution Approach 2:
The patent implements feedback mechanisms where wireless devices report their frequency synchronization accuracy measurements to the network, and the network provides feedback information back to devices. This closed-loop feedback system enables continuous improvement of frequency synchronization accuracy while keeping device complexity manageable through automated network-controlled adjustments.
2Measurement precision
If wireless devices transmit frequency synchronization accuracy information to all other devices, then frequency synchronization accuracy improves, but use of energy increases
Solution Approach 1:
By using a central network entity as an intermediary to collect and distribute frequency synchronization accuracy information, the patent eliminates the need for each device to transmit synchronization data to all other devices. This centralized approach achieves high synchronization accuracy while significantly reducing energy consumption compared to a decentralized all-to-all communication model.
Solution Approach 2:
The patent makes the central network entity perform multiple functions: collecting synchronization accuracy reports, processing this information, generating synchronization commands, and distributing them to devices. This multi-functional approach consolidates energy-intensive operations at the network level rather than distributing them across all devices.
3Measurement precision
If wireless devices perform detailed measurements from multiple synchronization sources, then frequency synchronization accuracy improves, but loss of time increases
Solution Approach 1:
The patent implements preliminary action by having the network pre-configure synchronization parameters, pre-select synchronization sources, and pre-process measurement data before devices need to perform detailed measurements. This preparation work done in advance reduces the time devices need to spend on actual synchronization measurements while maintaining high accuracy through pre-optimized measurement configurations.
Solution Approach 2:
The patent extracts the time-consuming tasks of collecting measurements from multiple synchronization sources and processing this data from the devices and relocates these functions to the network side. Devices only need to perform simplified measurements and report results, while the network performs the complex multi-source analysis, thereby reducing device measurement time while maintaining high synchronization accuracy.
Data Source
AI summary
The present disclosure relates to methods and devices for wireless communication at a wireless device or integrated access and backhaul (IAB) node. In one aspect, the wireless device may determine a frequency synchronization accuracy for the wireless device. The wireless device may also transmit an indication of the determined frequency synchronization accuracy for the wireless device. Additionally, the wireless device may determine an absolute frequency based on a combination of measurements from at least one synchronization source and a frequency of the wireless device, where the frequency synchronization accuracy is based on the absolute frequency.