ASON Routing Buffer Module Prioritizes SCN Traffic
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Solution Overview
Problem
In ASON networks, the transmission of SCN and MCN information using the same in-band DCC or GCC channel leads to bandwidth limitations, causing MCN information to impact the efficiency of SCN information transmission, which in turn affects the restoration and protection times of services.
Innovation Solution
A device with a routing buffering module that prioritizes SCN information over MCN information by using separate physical or logical channels, priority sequencing, and traffic limitation mechanisms to ensure efficient transmission of SCN information, even when both types of information share the same channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If SCN and MCN information use the same in-band DCC or GCC channel, then device complexity is reduced, but SCN information transmission efficiency deteriorates due to bandwidth limitations and MCN information interference
Solution Approach 1:
The patent segments the shared DCC/GCC channel into separate transmission paths by introducing a routing buffering module that divides SCN and MCN information into different queues. This segmentation allows independent handling of control plane and management plane traffic, ensuring SCN information receives priority processing while maintaining the simplicity of using a single physical channel.
Solution Approach 2:
The routing buffering module acts as an intermediary between the interface adaptation units and the physical channel. It mediates the transmission by prioritizing SCN information packets over MCN information packets, thus resolving the conflict between maintaining channel simplicity and ensuring efficient SCN transmission without requiring separate physical channels.
2Quantity of substance
If MCN information is transmitted on the same channel as SCN information, then bandwidth utilization is improved, but restoration and protection time increases due to SCN information transmission delays
Solution Approach 1:
The routing buffering module performs preliminary prioritization of SCN information packets before they are transmitted over the shared channel. By pre-identifying and queuing SCN packets with higher priority, the system ensures that when bandwidth is available, SCN information is transmitted first, thus reducing restoration and protection time while still utilizing the full bandwidth for both SCN and MCN traffic.
Solution Approach 2:
The patent introduces dynamic priority queuing in the routing buffering module, where the transmission priority of packets is dynamically adjusted based on their type (SCN vs. MCN). This dynamic mechanism allows the system to adaptively manage bandwidth allocation, ensuring critical control plane information is transmitted promptly while maintaining high overall bandwidth utilization for both control and management traffic.
3Productivity
If separate physical channels are used for SCN and MCN information, then SCN information transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges the transmission of SCN and MCN information onto a single physical DCC or GCC channel while maintaining logical separation through the routing buffering module. This combining approach achieves the transmission efficiency of separate channels by using priority queuing and traffic management, while avoiding the complexity of implementing and maintaining multiple physical channels.
4Adaptability or versatility
If bandwidth is allocated equally to SCN and MCN information, then fairness is improved, but SCN information transmission priority deteriorates
Solution Approach 1:
The routing buffering module applies local quality differentiation by assigning different priority levels to different types of information packets locally within the buffer. SCN information packets are assigned high priority to ensure timely transmission for rapid restoration, while MCN information packets are assigned lower priority. This local differentiation maintains overall system fairness while ensuring critical control information receives the necessary priority.
Solution Approach 2:
The patent changes the transmission parameter (priority level) of SCN information packets relative to MCN information packets. By modifying the priority parameter in the routing buffering module, the system ensures SCN information is transmitted with higher priority while still allocating bandwidth to both types of traffic, thus maintaining fairness while ensuring reliability for critical control plane operations.
Data Source
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AI summary
A device and method for transmitting Signaling Communication Network (SCN) information and Management Communication Network (MCN) information are provided, and the device comprises: a control plane related processing unit, a SCN interface adaptation unit, a management plane related processing unit, a MCN interface adaptation unit, and DCN interfaces; wherein the device further comprises a routing buffering module; the routing buffering module is configured to perform routing processing and buffering for received SCN information, which is generated by the control plane related processing unit and for which protocol and interface adaptation processing has been performed by the SCN interface adaptation unit, and received MCN information, which is generated by the management plane related processing unit and for which protocol and interface adaptation processing has been performed by the MCN interface adaptation unit, and to preferentially transmit the received SCN information to the DCN interfaces to be forwarded. The device and method of the present invention can realize efficient transmission of SCN information and reduction of the impact of MCN information on transmission of SCN information, thereby improving the performance of the ASON control plane.