RAN Node Service Delivery Optimization via Direct Mobile Device Interaction
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Solution Overview
Problem
Current mobile networks face challenges in optimizing service delivery and Quality of Experience (QoE) due to the lack of direct interaction between the Radio Access Network (RAN) and servers, exacerbated by Network Address Translation (NAT) and scalability issues, leading to inefficient adaptive bit rate adjustments and poor user experience.
Innovation Solution
A method where a node in the RAN receives authorization from an interaction device to exchange service delivery information directly with a mobile device, reducing signaling and allowing for optimized service delivery parameters like bit rate, frame size, and buffer status to be communicated, enabling dynamic adjustments based on RAN conditions and capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If servers directly estimate throughput using measured link bit rate or round trip time, then adaptive bit rate can be implemented, but the estimation is misleading and does not reflect actual RAN conditions
Solution Approach 1:
The patent introduces an intermediary mechanism where the RAN node acts as a mediator between the server and the mobile device. The RAN node provides accurate throughput information to the server based on actual RAN conditions, eliminating the need for the server to estimate throughput using misleading measurements. This intermediary role ensures the server receives authentic RAN status information for accurate adaptive bit rate control.
Solution Approach 2:
The patent implements a feedback mechanism where the RAN node continuously monitors actual throughput and feeds this information back to the server. This feedback loop allows the server to adjust the adaptive bit rate based on real RAN conditions rather than relying on inaccurate client-side estimates, thereby improving measurement precision and service delivery optimization.
2Productivity
If RAN and servers interact to exchange service delivery information, then service delivery can be optimized, but scalability issues arise due to NAT and difficulty in identifying RAN nodes
Solution Approach 1:
The patent enables the mobile device to autonomously request and receive service delivery information directly from the RAN node without requiring complex server-RAN interaction protocols. The mobile device acts on its own behalf to obtain necessary information, eliminating the need for servers to directly interact with RAN nodes and thereby reducing protocol complexity and improving scalability.
Solution Approach 2:
The patent extracts the service delivery information exchange function from the server-RAN interaction path and relocates it to a direct RAN-mobile device communication path. This extraction removes the complexity of NAT traversal and RAN node identification from the server side, allowing servers to focus on content delivery while RAN nodes handle optimization independently.
3Adaptability or versatility
If adaptive bit rate adjusts every 4 seconds based on client estimates, then some adaptation occurs, but the long interval increases risk of poor QoE when network conditions change rapidly
Solution Approach 1:
The patent implements continuous feedback from the RAN node to the mobile device regarding actual throughput conditions. This real-time feedback enables the mobile device to immediately detect network condition changes and adjust the adaptive bit rate without waiting for the 4-second interval, thereby reducing adaptation response time and preventing poor QoE during rapid network condition changes.
Solution Approach 2:
The patent enables preliminary action by having the mobile device proactively request service delivery information from the RAN node before needing to adapt bit rate. This advance acquisition of accurate RAN condition information allows the mobile device to prepare appropriate bit rate adjustments in advance, reducing the effective response time compared to waiting for periodic client-side estimations.
4Reliability
If servers modify delivery parameters based on RAN information, then QoE improves, but servers must be modified to use interaction protocols and process RAN information
Solution Approach 1:
The patent extracts the service delivery optimization function from the server and relocates it to the RAN node and mobile device. The server simply delivers content based on client requests without needing to process RAN information or implement interaction protocols. The optimization is performed independently by the RAN-mobile device pair, thereby improving QoE consistency without increasing server implementation complexity.
Solution Approach 2:
The mobile device autonomously obtains service delivery information from the RAN node and uses this information to adjust its own reception parameters without requiring server modification. This self-service approach allows QoE optimization while keeping servers unchanged, eliminating the need for servers to process RAN information or implement complex interaction protocols.
Data Source
AI summary
A method and apparatus for providing information relating to delivery of a service from a server to a mobile device. A node in a Radio Access Network (RAN) receives from an interaction device an instruction message indicating that the mobile device is authorized to exchange service delivery information relating to delivery of the service from the server to the mobile device with the node in the RAN. The node can then exchange service delivery information with the mobile device. The interaction device need not maintain state, as it simply authorizes the mobile device to interact directly with the node in the RAN. Furthermore, signaling between the interaction device and the node in the RAN is reduced.