Optical Burst Ring Network Bandwidth Sharing
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Solution Overview
Problem
In optical burst ring networks, the resource utilization is reduced due to each data processing node forming a receiving tree, where different nodes do not share bandwidth, leading to low bandwidth utilization, especially when carrying dynamic services like IPTV.
Innovation Solution
A data transmission method where data processing nodes share bandwidth resources by using a control channel to exchange bandwidth information, allowing nodes to buffer or send optical burst data based on available bandwidth, ensuring that the total bandwidth occupied by pending data does not exceed the receiving capacity of the destination node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each data processing node forms a receiving tree with dedicated bandwidth, then transmission reliability is improved, but resource utilization deteriorates due to non-shared bandwidth
Solution Approach 1:
The patent merges the bandwidth resources of multiple receiving trees into a shared pool. Data processing nodes dynamically allocate bandwidth from this shared pool based on actual transmission needs, allowing multiple nodes to utilize the same physical bandwidth resources simultaneously through time-division and wavelength-division multiplexing, thereby improving resource utilization while maintaining transmission reliability through coordinated control.
Solution Approach 2:
The patent introduces dynamic bandwidth allocation mechanisms where the bandwidth assignment to each data processing node changes according to real-time network conditions and service requirements. The system dynamically adjusts the bandwidth granted to each node within the shared pool, enabling flexible resource distribution that adapts to varying traffic patterns and service priorities, thus resolving the contradiction between reliable transmission and efficient resource utilization.
2Adaptability or versatility
If fixed-wavelength receivers and wavelength tunable transmitters are used with FDL arrays, then service convergence at optical layer is achieved, but device complexity increases
Solution Approach 1:
The patent makes the data processing nodes universal by equipping them with both fixed-wavelength receiving capabilities and wavelength-tunable transmitting capabilities. This multi-functionality allows the same node type to handle various service types and wavelength configurations, eliminating the need for specialized hardware for different services and thereby reducing overall device complexity while maintaining service convergence capabilities.
Solution Approach 2:
The patent eliminates the need for complex FDL arrays at each node by using a centralized FDL array in the network. Individual nodes discard the complexity of local FDL implementation and instead recover synchronization by coordinating with the centralized FDL resource, reducing device complexity at the node level while preserving the optical layer service convergence functionality.
Data Source
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AI summary
A data transmission method, a data transmission system and a data processing node are provided to improve the resource utilization. The data transmission method includes the following steps: a second data processing node receives control information sent from a first data processing node through a preset control channel, where the control information includes at least bandwidth information of a data channel for sending optical burst data and corresponds to the service information of optical burst data of the first data processing node; the second data processing node controls the transmission of pending optical burst data according to the bandwidth information. A data processing node and a data transmission system are also provided.