Positioning Paging Message for Idle UE Location
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately determining the location of user equipment (UE) in idle or inactive modes, as existing positioning methods require active connections and may not efficiently utilize assistance data for precise location estimation.
Innovation Solution
The method involves sending a positioning paging message to UE in an idle state, allowing it to measure positioning measurements based on received assistance data, and transmitting this information via a random access procedure, enabling location determination without a full connection, using techniques like time of arrival, enhanced cell identification, and angle of arrival.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing positioning methods are used for UE in idle state, then positioning can be performed, but positioning accuracy is insufficient and connection overhead increases
Solution Approach 1:
The patent extracts and utilizes assistance data from positioning system information blocks that are already broadcast for other purposes (such as OTDOA positioning). By taking out this existing data and repurposing it for positioning paging messages, the system achieves accurate positioning without requiring additional connection setup or extra signaling overhead.
Solution Approach 2:
The positioning system information blocks serve multiple functions: they provide assistance data for positioning measurements and simultaneously serve as the carrier for positioning paging messages. This multi-functionality allows the system to achieve positioning capability in idle state without requiring separate dedicated signaling resources or connection establishment.
2Measurement precision
If UE maintains active connection for positioning, then positioning accuracy improves, but energy consumption increases
Solution Approach 1:
The network can configure UEs to periodically monitor positioning paging messages during their idle state using discontinuous reception. This periodic monitoring allows the UE to maintain positioning capability without maintaining a continuous active connection, significantly reducing energy consumption while still enabling accurate positioning when needed.
Solution Approach 2:
The UE utilizes the positioning system information blocks that are already broadcast by the network for other purposes. By self-serving the positioning function using these existing resources, the UE achieves accurate positioning without needing to establish active connections or consume additional energy for dedicated positioning signaling.
3Measurement precision
If positioning paging message includes assistance data, then positioning measurement accuracy improves, but message size increases
Solution Approach 1:
The patent extracts assistance data from existing positioning system information blocks that are already broadcast for positioning purposes. By taking out this data and embedding it in positioning paging messages, the system provides accurate positioning measurements without requiring large additional message sizes, as the data is repurposed from existing broadcasts.
Solution Approach 2:
The positioning system information blocks containing assistance data are broadcast in advance for other positioning purposes. This preliminary action ensures that when positioning paging messages need to be sent, the assistance data is already available and can be efficiently included without requiring large real-time message transmissions.
Data Source
AI summary
Techniques are provided for positioning of user equipment (UE) with paging messages. An example method for positioning a user equipment with paging messages includes receiving a positioning paging message with a user equipment in an idle state, measuring positioning measurements in response to receiving the positioning paging message, determining location information based at least in part on the positioning measurements, and transmitting the location information via a random access procedure.