Paging-Triggered UE Positioning Reports in Idle States
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Solution Overview
Problem
Conventional downlink positioning methods cause excessive power consumption and waste of link resources due to user equipment (UE) in idle or inactive states periodically transitioning to connected states to report measurement results of reference signals.
Innovation Solution
A method where UE in idle or inactive states receives a paging message with a trigger indication to report measurement results of positioning reference signals, allowing location determination without frequent state transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE in idle or inactive state periodically enters connected state to report measurement result, then location management can be achieved, but power consumption increases and link resources are wasted
Solution Approach 1:
The network device pre-configures the UE with reporting configurations including measurement configurations and resource configurations while the UE is in idle or inactive state. The UE performs measurements and reports location information based on these pre-configured parameters without needing to transition to connected state, thereby reducing power consumption while maintaining location management capability
Solution Approach 2:
The patent introduces a location management function that operates independently of the RRC connection state. The network device can trigger location information reporting through paging messages or other downlink messages, allowing the UE to report location data in idle or inactive state without full connection establishment, thus acting as an intermediary mechanism between continuous location tracking and power saving
2Reliability
If UE in idle or inactive state periodically enters connected state to report measurement result, then location information can be updated, but link resources are wasted
Solution Approach 1:
The network device pre-allocates reporting resources and configurations to the UE in idle or inactive state. The UE uses these pre-configured resources to perform measurements and send location reports without establishing a full RRC connection, thereby updating location information while conserving link resources
Solution Approach 2:
The patent enables dynamic location information reporting where the UE can transition between different reporting modes based on its RRC state. When in idle or inactive state, the UE uses simplified reporting mechanisms with pre-configured parameters, while maintaining the ability to switch to full connected-state reporting when necessary, thus optimizing link resource usage
3Ease of operation
If UE transitions from idle or inactive state to connected state for reporting, then measurement result can be reported, but device complexity increases due to state transitions
Solution Approach 1:
The network device provides pre-configuration of measurement parameters, reporting formats, and resource allocations before the UE needs to report. This allows the UE to perform measurements and reporting in idle or inactive state using stored configuration data, eliminating the need for complex state transitions and configuration re-negotiation
Data Source
AI summary
Example methods for reporting user equipment location information and apparatus are described. In one example method, user equipment receives a first message, where the first message comprises a paging trigger indication, and the paging trigger indication is used to trigger the user equipment to report, when receiving a paging message, a measurement result of a positioning reference signal. The user equipment receives the paging message in an idle state or an inactive state. The measurement result of the positioning reference signal is reported by the user equipment based on the paging message.