Idle State UE Positioning via Pre-configured Reference Signals
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Solution Overview
Problem
Current 5G communication systems are unable to accurately position User Equipment (UE) when it is in an idle or inactive state, limiting indoor positioning capabilities and efficiency.
Innovation Solution
The method involves configuring a positioning operation in a mobile telecommunication network by providing a reference signal, such as a positioning reference signal (PRS) or sounding reference signal (SRS), in a default configuration or look-up table, allowing UE to perform positioning operations even in an idle or inactive state, with activation through messages or timers, and reporting measurement results when traffic is available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning is performed only when UE is in active or connected state, then positioning accuracy is maintained, but positioning availability is reduced
Solution Approach 1:
The patent applies preliminary action by pre-configuring positioning reference signals (PRS) and parameters before the UE enters idle or inactive state. The network pre-establishes positioning configurations including reference signal patterns, measurement parameters, and activation conditions, enabling the UE to perform positioning operations without full network connection. This allows positioning to be initiated and executed in idle/inactive states while maintaining accuracy through pre-prepared configuration data.
2Device complexity
If reference signal configuration is provided in default configuration or look up table, then positioning operation complexity is reduced, but configuration flexibility is limited
Solution Approach 1:
The patent segments the reference signal configuration into multiple components: default configuration parameters, look-up table entries for different scenarios, and conditional activation parameters. This segmentation allows the UE to select appropriate pre-configured reference signal patterns based on its state (idle, inactive, or connected) without requiring complex real-time configuration calculations. The configuration is divided into manageable lookup categories that simplify UE processing while providing scenario-specific optimization.
Solution Approach 2:
The patent utilizes parameter changes by defining different reference signal configurations for different UE states through parameter variations. The network can activate or deactivate specific positioning operations based on UE state changes, and the reference signal parameters (such as periodicity, bandwidth, and pattern) are adjusted according to whether the UE is in idle, inactive, or connected state. This parameter-based differentiation provides flexibility without requiring complex configuration procedures.
3Quantity of substance
If positioning measurement results are reported only when traffic is available, then network overhead is reduced, but positioning response time is increased
Solution Approach 1:
The patent implements periodic action by configuring the UE to report positioning measurement results at predetermined intervals or when specific conditions are met, rather than continuously or immediately. The network can configure reporting triggers based on periodic timers, event conditions, or traffic availability. This allows the UE to buffer measurement data and transmit it efficiently when network conditions are favorable, reducing unnecessary network overhead while maintaining acceptable positioning response time through timely periodic reports.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Disclosed is method of configuring a positioning operation in a mobile telecommunication network comprising at least one base station and at least on User Equipment, UE, wherein the UE is operable to perform the positioning operation whilst in an idle state, comprising the steps of: providing a reference signal in one of: a default configuration and a look up table format, comprising a plurality of possible configurations.