SUPL Positioning Protocol Indicator for Hybrid Method Selection
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Solution Overview
Problem
Current Secure User Plane Location (SUPL) solutions face limitations in efficiently selecting and switching between positioning protocols, leading to inflexibility and potential failures in hybrid positioning method selection due to the SUPL User Plane Location Protocol's (ULP) restrictions, which can result in inefficient location determination processes.
Innovation Solution
The proposed solution involves using a positioning protocol indicator within SUPL messages to conduct SET capability transfer and positioning method selection in a positioning protocol layer, allowing for flexible selection of hybrid positioning methods and specific protocol usage, thereby bypassing the limitations of the SUPL ULP layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If SUPL ULP protocol is used for positioning method selection, then positioning capability transfer can be conducted, but flexibility in selecting hybrid positioning methods is limited due to protocol restrictions
Solution Approach 1:
The patent introduces a new dimension by embedding positioning protocol messages within SUPL ULP messages. This nested structure allows the positioning protocol layer to operate independently within the SUPL framework, enabling hybrid positioning method selection without being constrained by SUPL ULP protocol restrictions. The positioning protocol indicator in the SUPL INIT message triggers this multi-layered communication approach.
2Measurement precision
If positioning method selection is conducted in SUPL ULP layer, then capability transfer is enabled, but accuracy in protocol selection is reduced
Solution Approach 1:
The patent segments the positioning capability transfer process into two distinct layers: the SUPL ULP layer for initial capability exchange and the positioning protocol layer for precise protocol selection. This segmentation allows each layer to perform its specialized function optimally - SUPL ULP handles basic capability transfer while the embedded positioning protocol messages enable accurate positioning protocol identification and hybrid method selection.
3Measurement precision
If hybrid positioning methods are selected, then positioning accuracy improves, but the positioning process becomes more complex
Solution Approach 1:
The patent introduces positioning protocol indicator messages as intermediaries that facilitate hybrid positioning method selection. These indicator messages act as a mediator between the SUPL INIT message and the actual positioning execution, enabling the SET and SLP to negotiate and select hybrid positioning methods without direct complex interactions. The indicator serves as a standardized interface that simplifies the overall process while enabling accurate hybrid method selection.
Data Source
AI summary
A method includes: receiving a request at a Secure User Plane Location (SUPL) Location Platform (SLP) for location-related service; producing a positioning method SUPL message that includes a posmethod parameter that includes a positioning protocol indicator indicating that SET capability transfer and positioning method selection are to be conducted in a positioning protocol layer; and sending the positioning method SUPL message from the SLP to a SUPL Enabled Terminal (SET) using a SUPL User Plane Location Protocol (ULP).