Access Switch Network Link Allocation for Stable Transmission
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Solution Overview
Problem
Current IP-based networks face challenges in maintaining quality of service (QoS) for video communication due to packet loss and error codes, with existing solutions like Inte Serv, Diff Serv, and Light load failing to provide stable transmission rates and avoid time delays, especially under heavy network loads.
Innovation Solution
A novel network architecture with centralized control, dividing the network into access and metropolitan areas, using node servers and access switches to manage data packets and allocate communication links, ensuring uniform traffic and preventing packet loss by restricting traffic to specific paths and intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If IP-based packet switching is used for network transmission, then network flexibility and ease of operation are improved, but transmission reliability deteriorates due to packet loss and error codes under heavy loads
Solution Approach 1:
The patent segments the network into access network and metropolitan area network with clear functional boundaries. The access switch handles local packet forwarding while the node server provides centralized control, dividing responsibilities to improve both flexibility and reliability
Solution Approach 2:
The node server acts as an intermediary between the access switch and the metropolitan area network. It centrally manages packet routing decisions and link allocation, ensuring reliable transmission while maintaining network flexibility through centralized intelligence
2Adaptability or versatility
If existing QoS solutions like Inte Serv, Diff Serv are implemented, then service differentiation is improved, but transmission stability deteriorates due to inability to guarantee stable rates under heavy loads
Solution Approach 1:
The node server performs preliminary actions by pre-establishing packet routing paths and link allocations before traffic bursts occur. It proactively manages network resources and prevents congestion rather than reacting to it, ensuring stable transmission rates
Solution Approach 2:
The patent changes the control parameter from distributed autonomous routing to centralized link allocation. The node server dynamically adjusts link allocation parameters based on network load, guaranteeing stable transmission rates while maintaining service differentiation
3Reliability
If centralized link allocation and traffic restriction to specific paths are implemented, then transmission reliability is improved by preventing packet loss, but network complexity increases due to centralized control architecture
Solution Approach 1:
The node server serves as a centralized intermediary that simplifies the overall network architecture. It consolidates control functions in one location, making the system easier to manage and configure while ensuring reliable transmission through centralized link allocation
Solution Approach 2:
The node server performs multiple functions including packet routing, link allocation, and network management within a single centralized device. This multi-functionality reduces the need for multiple specialized devices, actually simplifying the overall network architecture while maintaining high reliability
Data Source
AI summary
A method for an access network device to access a network is disclosed, which comprises: powering on an access switch, and setting in its internal downlink protocol packet address table that all downlink protocol packets are to be oriented to a CPU module; receiving, by the access switch, a downlink protocol packet sent from a node server and orienting the downlink protocol packet to the CPU module of the access switch, and generating, by the CPU module, an uplink protocol packet and sending the uplink protocol packet to the node server, wherein the downlink protocol packet contains an access network address that is to be allocated; sending, by the node server, a network access command to the access switch, wherein the network access command contains an access network address of the access switch, and the access network address is the access network address to be allocated; and updating, by the access switch, its internal downlink protocol packet address table, as orienting only a protocol packet with a destination address being its own access network address to the CPU module. The present invention can guarantee a stable transmission rate of the data packet transmission and avoid time delay, thereby guaranteeing the quality of the network transmission.