Mobile CDN Controller Handover Content Delivery
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Solution Overview
Problem
Existing mobile content delivery networks face challenges in seamlessly providing content during hand-over events in mobile networks, where users move and connections are disrupted, leading to instability and data loss.
Innovation Solution
A mobile CDN controller and local caching devices are used to detect hand-over events, select appropriate caching devices, and manage content transmission, ensuring continuous delivery by storing and redirecting content data through the mobile network's packet core and wireless access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If content is delivered through a single local caching device in mobile network, then content delivery speed is improved, but connection stability deteriorates during hand-over events
Solution Approach 1:
The system segments the content delivery function across multiple local caching devices instead of relying on a single device. When a mobile node moves, different portions of content can be delivered from different caching devices, preventing complete connection failure and maintaining delivery speed while improving stability.
Solution Approach 2:
The system performs preliminary actions by pre-fetching and caching content data in multiple local caching devices before hand-over events occur. This ensures that content is already available in the network infrastructure, enabling seamless continuation of delivery after hand-over without interruption to speed or stability.
2Reliability
If content is cached in multiple distributed devices, then connection stability during hand-over is improved, but system complexity increases
Solution Approach 1:
The system introduces a controller as an intermediary that manages multiple local caching devices. This controller handles the complexity of coordinating content delivery across devices, selecting appropriate caching devices based on mobile node location, and managing data synchronization, thereby improving connection stability while containing system complexity in a centralized management layer.
Solution Approach 2:
Each local caching device is designed with multi-functionality, capable of independently providing content delivery, storing cached data, and communicating with both mobile nodes and the controller. This universal design simplifies the overall system architecture by creating standardized, interchangeable components rather than specialized devices with unique functions.
3Loss of information
If content data is transmitted from origin server during hand-over, then data completeness is improved, but transmission time increases
Solution Approach 1:
The system performs preliminary actions by pre-caching content data in local caching devices before hand-over events. This ensures that content is already available in the network infrastructure, enabling seamless continuation of delivery after hand-over without interruption to speed or stability.
Solution Approach 2:
The system maintains continuity of useful action by ensuring that content delivery never fully stops during hand-over. Local caching devices continue transmitting cached content data to the mobile node throughout the hand-over process, eliminating gaps in data delivery and maintaining both completeness and timing efficiency.
Data Source
AI summary
The present invention relates to a method and apparatus for providing mobile content to seamlessly transmit content to a mobile node even during a hand-over of the mobile node through local caching devices distributed in a mobile network. When a specific local caching device detects a hand-over of the mobile node, content data transmitted from the specific local caching device is delivered to the mobile node through a mobile CDN controller, or blocking of content from a origin server is revoked to deliver content data from the origin server to the handed-over mobile node.