Multicast Content Delivery via User Feedback Adaptation
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Solution Overview
Problem
Existing multimedia broadcast multicast services (eMBMS) face challenges in providing efficient delivery of broadcast and multicast content due to issues like lost data, uncorrectable errors, and poor signal strength, which degrade user experience in 3GPP cellular networks.
Innovation Solution
A system and method that utilize feedback from user devices to detect conditions associated with multicast content, allowing for real-time adjustments in transmission parameters and error correction, such as increasing forward error correction overhead or retransmitting content, to improve the quality and reliability of the content delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If forward error correction overhead is increased to improve content delivery reliability, then data loss is reduced, but network bandwidth efficiency deteriorates
Solution Approach 1:
The system implements feedback mechanisms where user devices report reception conditions (data loss, signal strength) to the network. Based on this feedback, the network dynamically adjusts forward error correction overhead and retransmission strategies, optimizing the balance between reliability and bandwidth efficiency in real-time
Solution Approach 2:
The patent employs dynamic adjustment of error correction parameters based on detected reception conditions. The system transitions from static error correction configurations to adaptive ones that respond to changing channel conditions, user device capabilities, and traffic patterns, thereby optimizing both reliability and efficiency
2Reliability
If retransmission of lost content is implemented to improve data completeness, then user experience is enhanced, but network bandwidth consumption increases
Solution Approach 1:
The system applies partial retransmission strategies where only the specific lost or corrupted data segments are retransmitted rather than retransmitting entire content blocks. This selective approach ensures data completeness while minimizing unnecessary bandwidth consumption from redundant transmissions
Solution Approach 2:
The patent changes transmission parameters dynamically based on detected conditions. When data loss is detected, the system adjusts retransmission parameters such as timing, frequency, and content selection, optimizing the trade-off between data completeness and bandwidth consumption through parameter adaptation
3Reliability
If real-time feedback processing is implemented to improve content delivery quality, then user experience is enhanced, but system complexity increases
Solution Approach 1:
User devices autonomously monitor their own reception conditions and generate feedback reports without requiring complex centralized control. The network side processes these standardized reports using automated algorithms, reducing the need for complex manual configuration and management while maintaining high delivery quality
4Reliability
If error detection and correction mechanisms are strengthened to reduce data loss, then content quality is improved, but transmission overhead increases
Solution Approach 1:
The system applies forward error correction codes in advance to the content before transmission. This preliminary protection mechanism allows the receiver to correct certain errors without requiring retransmission, reducing overall transmission overhead while maintaining content quality through proactive error prevention
Data Source
AI summary
A user device may receive a portion of multicast content and may obtain transmission information associated with the portion of the multicast content. The transmission information may identify parameters or radio conditions under which the portion of the multicast content is being received by the user device. The user device may provide, to a server device, the transmission information, and may receive content that remedies a condition, associated with the portion of the multicast content. The condition may be detected, by the server device, based on the transmission information.