Mesh Network Routing for Video Latency
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Solution Overview
Problem
Current mobile networks face challenges in providing fast and responsive mobile video due to high data rate requirements and low latency needs, which become unsustainable with increasing numbers of users watching multi-megabit video streams, especially as they struggle to manage bandwidth and mobility management for wireless users.
Innovation Solution
A system with dynamic content rerouting capabilities, utilizing a mesh network with multi-RAT nodes and a gateway node that performs routing management to optimize traffic routes, including shallow packet inspection for determining packet routes and handling failures, and a method for delivering packet data flows across a radio access network with congestion control and transcoding to manage video streams effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If video streams are delivered through traditional mobile networks, then video content can be accessed, but latency is high and bandwidth constraints prevent efficient delivery under high user demand
Solution Approach 1:
The network is segmented into multiple mesh network nodes that can independently handle and route video traffic. Each node performs shallow packet inspection to determine routing paths, allowing parallel processing of video streams across multiple nodes rather than sequential handling through a single traditional network path.
Solution Approach 2:
A gateway node acts as an intermediary between the mesh network and the operator core network. The gateway receives routing management function pushes and distributes optimized routes to mesh nodes, mediating between traditional network architecture and the new mesh structure to reduce latency while maintaining compatibility.
2Quantity of substance
If the number of video streams increases, then more users can access video content, but bandwidth requirements increase rapidly becoming unsustainable
Solution Approach 1:
The mesh network provides dynamic routing where paths are not fixed but adapt based on current network conditions and traffic load. The routing management function can push updated routes to nodes in case of failure scenarios or congestion, allowing the network to dynamically optimize bandwidth usage as the number of video streams increases.
Solution Approach 2:
The network transitions from a traditional hierarchical structure to a mesh topology, adding spatial dimensionality to routing options. Multiple possible paths exist between any two points, allowing traffic to be distributed across different dimensional routes in the network graph, effectively increasing capacity without proportionally increasing total bandwidth consumption.
3Productivity
If shallow packet inspection is performed to determine packet routes, then routing efficiency improves, but network node complexity increases
Solution Approach 1:
Complex routing management functions are extracted from individual mesh nodes and centralized in the gateway node. The gateway receives routing management function pushes and distributes routes to nodes, taking out the complexity of route calculation and policy management from the edge nodes while maintaining routing efficiency at each node through simple local rule execution.
Data Source
AI summary
A method is disclosed for tearing down a TCP connection between a transmission control protocol (TCP) client in a radio access network (RAN) and a TCP server, comprising: receiving, at the TCP client, an indication to close the TCP connection; sending, from the TCP client to the TCP server, a TCP segment with a FIN bit set to indicate termination of the TCP connection; and closing, at the TCP client, the TCP connection without waiting for double the maximum segment lifetime period, thereby releasing the radio bearer resources and achieving radio bearer resource optimization.