Caching Channel Quality Indicators in Core Network
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Solution Overview
Problem
Mobile telecommunications networks face inefficiencies in transmitting bandwidth-intensive content due to frequently changing radio access network conditions, requiring frequent recalculation of channel quality indicators (CQIs) for successful content delivery, which consumes considerable bandwidth.
Innovation Solution
Caching channel quality indicators (CQIs) at support nodes within the core network allows service providers to adapt content to specific network conditions without recalculating them each time, reducing bandwidth consumption and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel quality indicators (CQIs) are recalculated frequently to adapt content to changing network conditions, then content delivery success rate is improved, but bandwidth consumption increases considerably
Solution Approach 1:
The patent applies preliminary action by calculating and storing channel quality indicators (CQIs) in advance before actual content delivery occurs. The network node pre-calculates CQIs for multiple mobile devices and stores them in a cache, so when content needs to be delivered, the pre-calculated CQIs are already available for immediate use without requiring recalculation at the moment of delivery, thus reducing bandwidth consumption while maintaining delivery success rate
Solution Approach 2:
The patent applies copying by creating and storing copies of channel quality indicator data in a cache memory at the network node. Instead of recalculating CQIs repeatedly, the system makes copies of the CQI data and stores them for reuse across multiple content delivery operations, significantly reducing the bandwidth and computational resources needed for repeated calculations
2Measurement precision
If signal analysis is performed repeatedly to determine network conditions, then content adaptation accuracy is improved, but network traffic increases
Solution Approach 1:
The system performs signal analysis and determines channel quality indicators in advance before content delivery is initiated. By pre-calculating the network conditions and storing the results, the system avoids the need to repeat signal analysis during content delivery, thereby maintaining measurement precision while reducing the quantity of network traffic generated by repeated analysis operations
Solution Approach 2:
The patent creates copies of the signal analysis results (CQI data) and stores them in cache memory. These copied data representations allow the system to reference pre-determined network conditions without performing new signal analysis, thus maintaining content adaptation accuracy while minimizing the network traffic that would result from repeated analysis operations
3Productivity
If content is adapted to specific network conditions for each transmission, then transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The system adapts content to specific network conditions by pre-determining the appropriate content format based on pre-calculated CQIs. The network node prepares multiple versions of content adapted to different network conditions in advance, and selects the appropriate version during delivery based on stored CQI data, thereby maintaining transmission efficiency while reducing the complexity of real-time adaptation decisions
Solution Approach 2:
The patent creates and stores multiple copies of content adapted to different network conditions (different CQI levels). Instead of performing complex real-time adaptation, the system selects from pre-prepared content copies that match the current network conditions, thus maintaining high transmission efficiency while reducing system complexity by replacing real-time processing with selection from pre-processed options
Data Source
AI summary
A mobile telecommunications network is configured to dynamically adapt transmitted content according to the channel quality of the network link connecting a destination mobile device to the mobile telecommunications network. Channel quality indicators (CQIs) for the mobile devices associated with the mobile telecommunications network are cached at one or more support nodes of a core network. Components of the core network therefore can request the CQI of a mobile device from a corresponding support node rather than repeating a process of determining anew the condition of the network linking to a mobile device each time content is to be communicated to or from a mobile device. A service provider receiving the CQI for a mobile device from the cache of a support node can adapt the content to be provided to the mobile device to the particular conditions of the network represented by the CQI.