Dedicated Uplink Channel for MBMS Feedback in Wireless Networks
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Solution Overview
Problem
Current wireless communication networks lack efficient mechanisms for user devices to provide feedback on received content, leading to network overload when using control channels for communication, especially during simultaneous content broadcasting.
Innovation Solution
Implementing dedicated uplink channels during multimedia broadcast multicast services (MBMS) to allow user devices to send feedback on quality of service, quality of experience, and other parameters, which can also be used for sharing content like videos and files, while downlink channels are dedicated for content broadcasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If control channels are used for user devices to communicate feedback about received content, then user devices can provide feedback on quality of service and content reception, but the wireless communication network becomes overloaded
Solution Approach 1:
The patent segments the communication channels by creating a dedicated uplink channel specifically for feedback transmission, separating it from the general control channels. This segmentation allows feedback traffic to be handled independently, preventing it from overwhelming the control channels while ensuring reliable feedback communication.
Solution Approach 2:
The patent introduces an intermediary feedback channel that mediates between the downlink content broadcast and the network control systems. This intermediary structure provides a specialized pathway for feedback information, reducing the burden on control channels and improving overall network efficiency.
2Productivity
If dedicated downlink channels are used for simultaneous content broadcasting to multiple user devices, then content delivery efficiency is improved, but there is no efficient mechanism for user devices to communicate back to cells
Solution Approach 1:
The patent segments the communication infrastructure into dedicated downlink channels for content delivery and dedicated uplink channels for feedback. This segmentation ensures that content broadcasting efficiency is maintained while providing a parallel, specialized pathway for user feedback communication.
Solution Approach 2:
The dedicated uplink channel serves multiple functions: it handles quality of service feedback, content reception confirmation, and other user device communications related to the broadcast service. This multi-functionality addresses the ease of operation requirement by providing a comprehensive feedback mechanism.
3Quantity of substance
If multiple user devices simultaneously broadcast content to cells, then network resource utilization is improved, but network overload occurs when devices attempt to communicate using control channels
Solution Approach 1:
The patent segments the communication load by creating a dedicated feedback channel that handles user device communications separately from control channels. This segmentation allows multiple users to communicate simultaneously without overwhelming the control infrastructure, maintaining network stability while supporting high user concurrency.
Solution Approach 2:
The patent implements a dedicated feedback mechanism that enables reliable two-way communication between user devices and the network. This feedback channel ensures that quality of service information and user responses are transmitted reliably, maintaining network stability even with high numbers of concurrent users.
Data Source
AI summary
A wireless communication network includes a plurality of cells, where at least one of the cells periodically transmits content to a plurality of user devices in a predetermined geographic area over one or more dedicated downlink channels as a multimedia broadcast multicast service. The at least one cell receive messages from one or more of the plurality of user devices over one or more dedicated uplink channels, where the messages relate to feedback in the form of messages and/or content pertaining to the content received by the one or more of the plurality of user devices.