Terminal Device PCI Conflict Detection via SSB Measurement Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting physical cell identifier (PCI) conflicts in 5G communications systems have low accuracy, primarily due to the reliance on network devices for conflict detection.
Innovation Solution
The proposed solution involves a terminal device that receives a synchronization signal and physical broadcast channel block measurement timing configuration (SMTC), measures the SSB, and reports an SMTC report if the measurement result is incorrect, thereby assisting the network device in detecting PCI conflicts with improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only the network device detects PCI conflict, then the detection process is simple, but the detection accuracy is low
Solution Approach 1:
The terminal device measures SSB and feeds back measurement results to the network device. When the terminal fails to measure SSB at expected locations or measures unexpected SSB, it reports this feedback information to the network device, enabling more accurate PCI conflict detection through terminal-device collaboration
Solution Approach 2:
The terminal device acts as an intermediary between the network device and the SSB measurement process. It performs local measurement and interpretation, then communicates findings to the network device, creating a cooperative detection system that improves accuracy without requiring complex network-side analysis alone
2Measurement precision
If the terminal device measures SSB continuously, then the PCI conflict detection accuracy is improved, but the terminal device power consumption increases
Solution Approach 1:
The network device configures SMTC (SSB measurement timing configuration) that specifies exact measurement occasions before the terminal device needs to measure. This preliminary configuration allows the terminal to measure SSB only at predetermined time windows rather than continuously, reducing power consumption while maintaining measurement accuracy
Solution Approach 2:
Instead of continuous measurement, the terminal device performs periodic measurement according to configured SMTC timing. The measurement occurs at specific periodic intervals when SSB is expected to be transmitted, balancing detection accuracy with energy efficiency
3Reliability
If the network device reallocates PCI to resolve conflict, then the PCI conflict is resolved, but the network optimization complexity increases
Solution Approach 1:
The terminal device provides feedback information about measurement failures and unexpected SSB detections to the network device. This feedback enables the network to identify PCI conflicts more reliably and make informed optimization decisions about which cells need PCI reallocation
Solution Approach 2:
The terminal device autonomously performs measurement tasks and generates its own reports about measurement failures. This self-service capability reduces the burden on the network device to conduct comprehensive measurements itself, simplifying the network optimization process
Data Source
AI summary
An information transmission method and related device, the method including receiving, by a terminal device, a first synchronization signal and physical broadcast channel block measurement timing configuration (SMTC) associated with configuring an occasion for the terminal device to measure a synchronization signal and physical broadcast channel block (SSB), obtaining an SSB measurement result by measuring the SSB in the occasion configured through the first SMTC, determining that the SSB measurement result is incorrect for an SSB corresponding to any physical cell identifier (PCI) in response to the terminal device failing to measure at least one of the SSB in increasing order, or measure the SSB at a preset location, and reporting. in response to the SSB measurement result being incorrect, a first SMTC report, where the first SMTC report indicates that the SSB measurement result is incorrect.