Service Scheduling Unit for 1+1 Protection in Digital Communication
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Solution Overview
Problem
Conventional L2 VPN service scheduling methods lack an independent service scheduling unit, leading to wasted resources when service access is not needed and difficulties in achieving '1+1' protection due to limitations in data service interfaces, which are crucial for network reliability.
Innovation Solution
A service scheduling unit that separates service access and scheduling functions, featuring a de-mapping module, decapsulating module, packet scheduling module, encapsulating module, and mapping module, along with a fault alarming module, to provide '1+1' or '1:1' protection and efficient service scheduling in digital communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If service access and service scheduling functions are integrated in the same unit, then the system structure is simplified, but resources are wasted when service access is not needed and '1+1' protection cannot be achieved
Solution Approach 1:
The patent divides the integrated service access and service scheduling functions into separate independent units: service access units (SAU) and service scheduling units (SSU). This segmentation allows each unit to perform its specific function independently, enabling '1+1' protection for SSU while avoiding resource waste in SAU when access is not required. The segmented architecture resolves the contradiction by allowing reliability protection without forcing unnecessary access functionality.
2Adaptability or versatility
If data service interfaces are provided for service access, then service access functionality is enabled, but the cost increases and '1+1' protection becomes difficult to achieve
Solution Approach 1:
The patent separates service access functionality into independent SAU that can be selectively deployed. When service access is not required, SAU can be omitted entirely, reducing cost and complexity. The SSU operates independently without requiring data service interfaces, thus avoiding the contradiction between providing access functionality and maintaining simplicity/protection capability.
Solution Approach 2:
The SSU is designed as a universal unit that can handle multiple protocol types (Ethernet, ATM, IP, Frame Relay) without requiring specific data service interfaces for each protocol. This multi-functionality allows the SSU to provide service scheduling for various protocols while maintaining a standardized interface structure, reducing overall system complexity.
3Adaptability or versatility
If multiple protocol encapsulation is supported, then versatility is improved, but processing complexity increases
Solution Approach 1:
The patent extracts the protocol-specific processing functions into separate encapsulation/decapsulation modules within the SSU. Each protocol type has its own dedicated processing path, allowing the core SSU functionality to remain protocol-agnostic. This extraction reduces processing complexity in the main scheduling logic while maintaining support for multiple protocols through modular, protocol-specific handlers.
Data Source
AI summary
This invention discloses a service scheduling unit and the method thereof, which performs scheduling for the packet service that comes from the line unit and the data service access processing unit in the digital communication system, and the service scheduling unit includes: a mapping module, a de-mapping module, an encapsulating module, a decapsulating module and a packet scheduling module. After entering the service scheduling unit, the services needing to be scheduled go through the mapping/de-mapping module and the encapsulating/decapsulating module, arrive at the scheduling module for final scheduling This method of scheduling the services can achieve the 1+1 or 1:1 protect function of the service scheduling module. The usage of this method can achieve different granularities of the mapping/de-mapping, different protocol encapsulating and can efficiently decrease the total cost of the system.