Integrated Cross-Switching Unit for TDM and Data Service Scheduling
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Solution Overview
Problem
Conventional systems require separate line boards for data and TDM service switching, leading to complexity and inability to support virtual concatenation, as they need identification, de-mapping, and de-encapsulation, which increases system complexity and costs.
Innovation Solution
An integrated cross-switching unit that combines TDM cross-connecting and data switching functions, featuring a bus identification module, cross-connecting module, mapping/de-mapping module, encapsulation/de-encapsulation module, and packet scheduling module, allowing for efficient scheduling and support of virtual concatenation without de-encapsulation, using multiple physical channels and encapsulation protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate line boards are used for data and TDM service switching, then service switching capability is provided, but system complexity increases and virtual concatenation cannot be supported
Solution Approach 1:
The patent merges the previously separate data service processing unit and TDM cross-connecting unit into a single integrated cross-switching unit. This integration eliminates the need for separate line boards to perform identification, de-mapping, and de-encapsulation operations, thereby reducing system complexity while enabling virtual concatenation support through unified service handling.
Solution Approach 2:
The integrated cross-switching unit performs multiple functions including data service processing, TDM cross-connecting, identification, mapping/de-mapping, and encapsulation/de-encapsulation within a single device. This multi-functional design allows the system to handle both data and TDM services through one unit, reducing the need for specialized separate boards and enabling virtual concatenation capabilities.
2Productivity
If separate data switching and TDM cross-connecting are implemented, then service switching is achieved, but system slot requirements increase
Solution Approach 1:
By combining data switching and TDM cross-connecting functions into a single integrated cross-switching unit, the patent reduces the number of system slots required. The unified structure allows both service types to share common resources including processing units, memory, and interface circuits, thereby maintaining service switching capacity while reducing hardware footprint.
3Ease of operation
If line boards implement identification, de-mapping, and de-encapsulation, then data service switching is enabled, but implementation costs increase
Solution Approach 1:
The patent consolidates identification, de-mapping, and de-encapsulation functions into the integrated cross-switching unit rather than requiring them on separate line boards. This integration reduces implementation costs by eliminating duplicate hardware components and simplifying the system architecture, while maintaining full data service processing capability through the unified unit's comprehensive functionality.
Data Source
AI summary
An integrated cross-switching unit and a service scheduling method thereof are provided. The integrated cross-switching unit includes: a bus identification module, a cross-connecting module, a mapping/de-mapping module, an encapsulation/de-encapsulation module, and a packet scheduling module; the bus identification module identifies service source, transmits service from a line unit to the cross-connecting module and directly sends the data packets from the data service processing unit to the packet scheduling module to implement scheduling; the cross-connecting module implements TDM service cross-connecting, and transmits the data service of the service from the line unit to the packet scheduling module via the mapping/de-mapping module and the encapsulation/de-encapsulation module to implement scheduling. This solution integrates the cross-connecting function and switching function of TDM service and data service in the same unit, reducing system slots and realizing larger-capacity service scheduling.