PoC Box Media Storage Service for Push-to-Talk Cellular Networks
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Solution Overview
Problem
Current push-to-talk-over-cellular (PoC) technology lacks a standardized method for implementing a PoC Box service, which is essential for storing and managing media during sessions, especially when users cannot participate in real-time.
Innovation Solution
The method employs standard SIP, SDP, XCAP, and PAP protocols to set up and manage a PoC Box service, allowing for media storage and transmission, enabling a PoC client to request and store media outside of a session, and a PoC server to manage and transmit media to the storage part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PoC Box service is implemented to store media during sessions, then users can retrieve missed session details and media storage capability is improved, but the system complexity increases due to lack of standardized implementation methods
Solution Approach 1:
The patent introduces a PoC Box as an intermediary component between the PoC client and the media storage system. This PoC Box acts as a standardized mediator that handles media storage, retrieval, and management functions, thereby improving reliability while maintaining system simplicity through standardized interfaces and protocols.
Solution Approach 2:
The patent segments the PoC system into distinct functional components: PoC clients for communication, PoC servers for session management, and PoC Boxes for dedicated media storage. This segmentation allows each component to be optimized independently with standardized interfaces, reducing overall system complexity while enhancing media storage capability.
2Adaptability or versatility
If standard SIP, SDP, XCAP, and PAP protocols are used for PoC Box service setup, then compatibility with conventional PoC technology is improved, but the protocol integration complexity increases
Solution Approach 1:
The patent makes the PoC Box service multi-functional by designing it to work with multiple existing protocols (SIP for session initiation, SDP for media description, XCAP for configuration access, and PAP for push access). This universal design allows a single PoC Box implementation to provide media storage services across different PoC scenarios while maintaining compatibility with conventional technology stacks.
Solution Approach 2:
The PoC Box is designed to autonomously handle protocol integration and service setup without requiring complex external configuration. It automatically discovers and integrates with existing SIP, SDP, XCAP, and PAP infrastructure, reducing protocol integration complexity while maintaining broad compatibility.
3Reliability
If media is transmitted to a storage part during sessions, then media management capability is improved, but network traffic increases
Solution Approach 1:
The patent implements preliminary action by having the PoC Box pre-position itself as a media storage endpoint before sessions begin. Media is routed to the PoC Box during sessions rather than being transmitted extensively across the network for storage. This preliminary setup reduces redundant network traffic while maintaining improved media management capability.
Solution Approach 2:
The patent extracts the media storage function from the main PoC communication path and places it in a dedicated PoC Box storage component. This extraction allows media to be stored locally at the PoC Box with minimal network traffic, while the PoC Box maintains standardized interfaces for media retrieval and management.
Data Source
AI summary
A method is disclosed which sets a PoC Box service and transmits information on a service identifier by using a standard SIP, a SDP, an XCAP, and a PAP, in order to remain compatible with conventional PoC technology when performing call processing of session connection using a PoC Box. Further, the method stores only pre-designated media in a PoC Box according to a type of media transmitted in consideration of features of a PoC multimedia session.