Positioning Controller Bypasses Core Network to Reduce Delay
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Solution Overview
Problem
In wireless positioning systems, the long message transmission delay due to data exchange through core network devices results in relatively low positioning precision, especially when user devices move during the positioning process.
Innovation Solution
A positioning method where a positioning controller sends positioning auxiliary information directly to a user device, instructing it to measure signals from a serving base station and neighboring base stations, and receives the measurement results without using the core network, allowing for more accurate location determination based on the signals from multiple base stations across different communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If data exchange between positioning controller and user device goes through core network devices, then system architecture is standardized, but message transmission delay increases and positioning precision deteriorates
Solution Approach 1:
The patent extracts the positioning controller from the traditional core network positioning architecture and relocates it to the access network (base station). This extraction eliminates the need for messages to traverse core network devices, directly reducing transmission delay and improving positioning precision by enabling direct communication between the positioning controller and user device through the access network only.
Solution Approach 2:
The patent introduces the access network (base station) as an intermediary that hosts the positioning controller function. This intermediary role allows the positioning controller to communicate directly with user devices without requiring core network involvement, thereby reducing message transmission delay while maintaining standardized positioning capabilities through the access network interface.
2Measurement precision
If positioning measurement is performed before user device movement, then measurement process is simple, but positioning precision deteriorates due to outdated location data
Solution Approach 1:
The patent implements preliminary action by having the positioning controller send positioning auxiliary information and measurement configuration to the user device before movement occurs. The user device then performs measurements on base station signals during the movement process, and the positioning controller calculates real-time location based on these measurements, enabling accurate positioning that accounts for device movement rather than relying on pre-movement data.
Data Source
AI summary
Embodiments of the present disclosure relate to the field of communications technologies, and disclose a positioning method and device, so as to resolve a prior-art problem of relatively low positioning precision caused by a relatively long message transmission delay. A specific solution is as follows: A positioning controller: sends, to a user device, a message that carries positioning auxiliary information including an identifier of a first base station and an identifier of at least one second base station; receives a message that carries a positioning measurement result; obtains location information of the first base station and location information of the at least one second base station; and determines location information of the user device according to the positioning measurement result, the location information of the first base station, and the location information of the at least one second base station.