Adaptive OoS Thresholds for Wireless Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing out-of-synchronization (OoS) detection methods in wireless communication networks do not consider downlink channel bandwidth and transmitter antenna configuration, leading to inaccurate synchronization status determination and potential interference.
Innovation Solution
A method where User Equipment (UE) determines downlink channel bandwidth and transmitter antenna configuration to set OoS and in-synchronization (IS) thresholds, monitoring channel quality metrics to accurately assess synchronization status and adjust filter durations based on these factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If prior art OoS detection methods monitor predetermined control signaling for channel quality metric without considering bandwidth and antenna configuration, then the detection method is simple, but the synchronization status determination becomes inaccurate
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting OoS and IS detection thresholds based on downlink channel bandwidth and transmitter antenna configuration. The controller determines bandwidth and antenna parameters, then sets appropriate thresholds and filter durations that adapt to these physical layer characteristics, thereby improving detection accuracy without requiring fundamentally complex new detection mechanisms
Solution Approach 2:
The patent implements preliminary action by having the controller determine downlink bandwidth and antenna configuration before setting detection thresholds. This preliminary determination of system parameters allows the thresholds to be pre-configured appropriately for the specific network configuration, improving accuracy while maintaining operational simplicity
2Object-generated harmful factors
If fixed OoS thresholds are used regardless of bandwidth and antenna configuration, then the detection method is easy to implement, but unnecessary interference occurs due to inaccurate synchronization status determination
Solution Approach 1:
The patent changes the fixed threshold parameter into a dynamic parameter that varies with bandwidth and antenna configuration. By determining appropriate thresholds based on these physical layer parameters, the system reduces unnecessary interference caused by inaccurate detection, while the automated determination process minimizes the operational complexity of managing these variable thresholds
3Reliability
If downlink channel bandwidth and antenna configuration are considered in setting OoS thresholds, then synchronization detection accuracy improves, but the processing complexity increases
Solution Approach 1:
The patent enhances reliability by incorporating bandwidth and antenna configuration parameters into the threshold determination process. The controller determines these physical layer parameters and uses them to set appropriate OoS and IS thresholds with adaptive filter durations, improving detection reliability while keeping the processing framework within existing cellular system capabilities
Solution Approach 2:
The system implements feedback by continuously monitoring downlink channel quality metrics and comparing them against dynamically determined thresholds. The controller adjusts detection parameters based on the determined bandwidth and antenna configuration, creating a closed-loop system that maintains high reliability without requiring excessive processing complexity
Data Source
Figure 1
Figure 2
AI summary
User Equipment in a wireless communication network considers the downlink channel bandwidth in setting out of synchronization (OoS) and in synchronization (IS) thresholds and filter durations. Additionally, the UE may consider transmitter antenna configuration - that is, the number of transmitting antennas in a MIMO system - in setting the OoS and IS thresholds. The UE determines it is OoS when a monitored, filtered, downlink channel quality metric, such as reference symbol SINR, is below the OoS threshold.