Positioning Assistance Data Management in Wireless Networks
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Solution Overview
Problem
Current wireless communication systems are inefficient in terms of bandwidth utilization and complexity due to the need for multiple state transitions by mobile devices during positioning, and the frequent request for unchanged assistance data, which increases system resource overhead and power consumption.
Innovation Solution
Implementing a method where the positioning server stores assistance data and only updates it when changes occur, reducing unnecessary state transitions and data transmission by including indicators in paging messages to inform mobile devices of data changes, allowing them to request updated assistance data only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mobile devices frequently request assistance data for positioning, then positioning accuracy is maintained, but system resource overhead and power consumption increase
Solution Approach 1:
The network node proactively includes change indicators in paging messages before the mobile device needs to request assistance data. This preliminary action allows the mobile device to determine whether assistance data has changed without sending a request, thereby maintaining positioning accuracy while reducing power consumption by avoiding unnecessary requests.
Solution Approach 2:
The system implements a feedback mechanism where the network node monitors assistance data changes and communicates this information back to mobile devices through paging messages with change indicators. This feedback loop ensures that assistance data is updated only when necessary, balancing positioning accuracy with energy efficiency.
2Ease of operation
If mobile devices perform multiple state transitions during positioning, then positioning functionality is achieved, but bandwidth utilization efficiency decreases
Solution Approach 1:
The network node performs the preliminary action of including assistance data change indicators in paging messages before the mobile device needs to transition to connected state. This allows the mobile device to remain in idle state while still obtaining necessary positioning information, thereby reducing state transitions and improving bandwidth utilization efficiency.
Solution Approach 2:
The invention extracts the assistance data change notification function from the traditional request-response mechanism and embeds it directly into the paging message. This extraction eliminates the need for separate assistance data requests and reduces the number of state transitions required, improving overall bandwidth utilization efficiency.
3Reliability
If the network includes unchanged assistance data in paging messages, then positioning capability is maintained, but system resource overhead increases
Solution Approach 1:
The invention extracts only the essential change indicator information from the assistance data and includes it in the paging message, rather than transmitting the complete unchanged assistance data. This selective extraction maintains positioning capability by notifying devices of changes while significantly reducing system resource overhead.
Solution Approach 2:
Instead of transmitting the full assistance data in paging messages, the network node applies partial action by including only the change indicator. This partial approach is sufficient to maintain positioning capability while avoiding the excessive overhead of transmitting complete data, especially when assistance data has not changed.
Data Source
AI summary
Methods, systems, and devices related to data transmission and management for positioning User Equipment (UE) in a network are described. In one representative aspect, a method for wireless communication includes receiving, at a wireless communication node, a first paging message from a network node, wherein the first paging message includes information that facilitate positioning a mobile device in a wireless network. The method also includes transmitting, from the wireless communication node, a second paging message to the mobile device, wherein the second paging message includes the information that facilitate positioning the mobile device in the first paging message.