ProSe Function Metadata Delivery via Binding Information
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Solution Overview
Problem
Current mechanisms for ProSe Direct Discovery in proximity-based services do not ensure metadata delivery to monitoring UEs and lack a defined method for the announcing UE to request or confirm metadata delivery receipts, particularly in Open and Restricted ProSe Direct Discovery scenarios.
Innovation Solution
A method and apparatus for ProSe services that involve receiving an Authentication Response with a metadata indicator, creating binding information, transmitting a second Authentication Request, and sending a Match Report Acknowledgment with metadata, while enabling metadata delivery receipts and blocking options for announcing and monitoring UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ProSe Function uses optional Authentication Request/Response procedure to obtain metadata, then the ProSe Function may obtain metadata, but metadata delivery cannot be ensured because the procedure is optional and may not be executed
Solution Approach 1:
The patent applies preliminary action by establishing binding information between metadata indicators and RPAUIDs before the Match Report procedure. The ProSe Function creates and stores this binding information in advance, ensuring that when a Match Report is received, the metadata can be reliably retrieved and delivered without requiring optional authentication steps at that moment.
Solution Approach 2:
The patent introduces binding information as an intermediary mechanism that mediates between the metadata storage and the Match Report processing. This binding information acts as a pre-established link that enables reliable metadata delivery without requiring complex optional authentication procedures during the actual discovery process.
2Loss of information
If the ProSe Function sends Authentication Request to obtain metadata, then metadata can be obtained, but the process requires additional signaling messages increasing communication overhead
Solution Approach 1:
The patent performs preliminary actions by pre-establishing binding information between metadata indicators and RPAUIDs. This preparation work is done in advance, so when a Match Report is received, the ProSe Function can immediately retrieve and deliver the corresponding metadata without needing to send additional Authentication Requests, thereby reducing both information loss and time loss.
3Reliability
If metadata delivery is made mandatory through Authentication Request, then metadata delivery reliability improves, but the procedure becomes more complex and may fail if authentication cannot be completed
Solution Approach 1:
The patent uses binding information as an intermediary that simplifies the metadata delivery process. Instead of requiring complex optional authentication procedures, the pre-established binding information enables the ProSe Function to reliably retrieve and deliver metadata through a straightforward process, improving both reliability and ease of operation.
Solution Approach 2:
The patent extracts the authentication complexity from the metadata delivery process by pre-establishing binding information. This separation allows the metadata delivery to proceed through a simple, reliable process without being burdened by complex authentication procedures, thereby improving ease of operation while maintaining reliability.
Data Source
AI summary
The disclosure is directed to a metadata delivery method and related apparatuses using the same method. According to one of the exemplary embodiments, the disclosure is directed to a metadata delivery method used by a ProSe Function. The method would include not limited to: receiving a first Authentication Response which includes not limited to a metadata indicator; creating a binding information between the metadata indicator and a RPAUID in response to receiving the first Authentication Response; receiving a Match Report comprising the RPAUID; transmitting a second Authentication Request message which includes not limited to the metadata indicator in response to determining the RPAUID matches the metadata indicator; receiving a second Authentication Response which includes not limited to a metadata corresponding to the metadata indicator; and transmitting a Match Report Acknowledgment which includes not limited to the metadata in response to receiving the second.