Aggregated Feedback Report for Wireless Multimedia
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Solution Overview
Problem
In wireless networks, the current RTCP reporting mechanism for multicast sessions is inefficient, leading to wastage of scarce radio resources, server overload, and delayed adaptation to changing conditions due to the lack of an uplink channel and heterogeneous user capabilities, which affects the quality of multimedia services.
Innovation Solution
Implementing an intermediate network part that generates aggregated feedback reports based on distribution characteristics, including information from radio resource management and client reports, to adapt multimedia data transmission efficiently, reducing the need for individual client reports and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual client RTCP reports are used in multicast sessions, then reception quality feedback is obtained, but radio resources are wasted and server overload occurs
Solution Approach 1:
The patent combines individual client RTCP reports into a single aggregated report generated by the network. The network collects distribution characteristics from multiple clients and consolidates them into one feedback message that reflects the overall reception quality, thereby maintaining reliability feedback while reducing radio resource consumption.
Solution Approach 2:
The network acts as an intermediary between clients and the server. Instead of clients directly sending individual RTCP reports to the server (which would consume radio resources), the network collects this information and generates aggregated reports on behalf of the clients, mediating the feedback process to reduce resource waste.
2Measurement precision
If individual client reports are collected for feedback, then adaptation accuracy is improved, but server processing load increases
Solution Approach 1:
The network merges multiple individual client reports into a single aggregated feedback message. This consolidation maintains adaptation accuracy by preserving the essential distribution characteristics information while significantly reducing the volume of data the server must process, thereby lowering server processing load.
Solution Approach 2:
The network extracts and processes the critical feedback information from individual client reports locally, generating a summarized aggregated report. This extraction process occurs at the network level rather than requiring the server to process every individual report, reducing server burden while maintaining necessary adaptation accuracy.
3Productivity
If RTCP reporting is implemented in broadcast mode without uplink channel, then downlink transmission efficiency is improved, but quality feedback capability is lost
Solution Approach 1:
The network serves as an intermediary that generates aggregated RTCP reports on behalf of clients in broadcast mode. Since there is no uplink channel for clients to send feedback directly, the network collects distribution characteristics and creates synthesized feedback messages that convey quality information back to the server, maintaining feedback capability while preserving downlink transmission efficiency.
Solution Approach 2:
The network performs self-service by generating RTCP reports using its own knowledge of radio conditions and distribution characteristics. Instead of relying on clients to send feedback reports, the network autonomously creates aggregated feedback messages based on its monitoring of the broadcast transmission and client reception conditions.
4Quantity of substance
If aggregated feedback reports are generated without uplink channel, then radio resources are saved, but feedback timeliness may be delayed
Solution Approach 1:
The network performs preliminary actions by continuously monitoring distribution characteristics and radio conditions in advance. This ongoing collection of information allows the network to generate aggregated feedback reports promptly when needed, reducing feedback delay while avoiding the need for real-time uplink transmissions and conserving radio resources.
Data Source
AI summary
A method and system for adapting multi-user multimedia data in a communication system with a server providing the multi-user multimedia data to clients and with an intermediate network part. The intermediate network part is arranged to provide information on communication between the server and the clients. The server sends multimedia data to the clients. Distribution characteristics are determined for the clients, which are considered by the generation of an aggregated feedback report on the clients' reception conditions of the multimedia data in the intermediate network part. The feedback report includes additional information about aggregation fashion. The aggregated feedback report is sent to the server in order for the server to adapt the transmission of the multimedia data from the server to the clients according to the aggregated feedback report.