Low-Power Terminal Cell Reselection With Periodic Neighbor Measurement
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Solution Overview
Problem
Low-power consumption terminals, such as RFID tags, do not support complex cell reselection or measurement in new radio (NR) networks, leading to challenges in accurately performing cell reselection when signal quality of the serving cell is poor.
Innovation Solution
A method for cell reselection involving terminals receiving measurement indication information from a serving cell, including frequency and cell identifier details, and performing measurements on neighboring cells based on this information to determine target cells that meet reselection criteria, with flexible configurations for different terminals and reduced signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing cell reselection technology is used in low-power terminals, then the terminal can maintain basic connectivity, but the terminal cannot accurately perform cell reselection when signal quality is poor due to lack of complex measurement support
Solution Approach 1:
The patent segments the measurement process into specific measurement time periods within a measurement periodicity, where the terminal only performs measurements during designated time windows rather than continuously. This segmentation allows low-power terminals to perform measurements in a structured, manageable way that improves accuracy without requiring continuous complex measurement capability.
Solution Approach 2:
The patent implements periodic measurement action by defining measurement periodicity and measurement time periods, where the terminal performs measurements at regular intervals rather than continuously. This periodic approach enables low-power terminals to achieve accurate cell reselection measurements while consuming less power and avoiding the need for continuous complex measurement operations.
2Measurement precision
If continuous neighboring cell measurement is performed to ensure accurate cell reselection, then measurement accuracy improves, but power consumption increases
Solution Approach 1:
The patent applies periodic action by configuring measurement periodicity and measurement time periods, allowing the terminal to perform neighboring cell measurements only during specific time windows rather than continuously. This ensures measurement accuracy is maintained while significantly reducing power consumption compared to continuous measurement.
Solution Approach 2:
The network provides measurement indication information in advance, including frequency information, cell identifiers, and measurement timing parameters. This preliminary action allows the terminal to prepare for measurements efficiently and perform them only when necessary, avoiding unnecessary power consumption while maintaining measurement accuracy.
3Reliability
If complex measurement procedures are implemented to improve cell reselection accuracy, then reselection accuracy improves, but device complexity increases
Solution Approach 1:
The patent segments the complex measurement procedure into manageable components: receiving measurement indication information, performing measurements during specified time periods, and evaluating results against criteria. This segmentation makes the measurement process implementable in low-power terminals without requiring full complex measurement capability, thus improving reliability while managing device complexity.
Solution Approach 2:
The network provides all necessary measurement parameters and criteria in advance through measurement indication information. This preliminary action simplifies the terminal's task to executing predefined measurement procedures rather than making complex decisions, improving reselection reliability while keeping terminal design simple.
4Speed
If frequent measurement is performed to track signal quality changes, then cell reselection responsiveness improves, but power consumption and signaling overhead increase
Solution Approach 1:
The patent implements periodic measurement with configurable measurement periodicity and measurement time periods. This allows the terminal to respond to signal quality changes at appropriate intervals without excessive frequency, balancing reselection responsiveness with power consumption by measuring only when necessary rather than continuously or too frequently.
Data Source
AI summary
This application discloses a cell reselection method and apparatus, a system, and a storage medium. A terminal receives measurement indication information from a serving cell, performs neighboring cell measurement based on the measurement indication information, and reselects to a target cell when determining, based on a neighboring cell measurement result, that a reselection criterion is satisfied. The measurement indication information is different from that in an existing cell reselection solution, where the two pieces of information carry different content and are sent in different modes. Therefore, cell reselection of this type of terminals can be accurately implemented by using the solutions in this application.