Satellite borne shared storage exchange device

Abstract

The invention discloses a satellite borne shared storage exchange device which comprises a wire in processing unit, a plurality of memorizers and a wire out processing unit. The wire in processing unit comprises a plurality of interface processing units, a plurality of packet processing units, an address list management module, a parallel writing-in control module and a multiplexing module. The wire out processing unit comprises a demultiplexing module, a parallel reading control module, a plurality of output caching modules and a plurality of sending modules. Each input interface corresponds to an interface processing module, a packet processing module and a memorizer. Each output interface corresponds to an output caching module and a sending module. The number of the input interfaces and the output interfaces is identical to the number of the interface memorizers. The satellite borne shared storage exchange device can effectively reduce the requirements on the access rates and the capacity of the memorizers, and meet the development requirements of a high-speed large-capacity satellite borne routing switch.

Description

technical field [0001] The invention relates to a space-borne shared storage switching device, which belongs to communication equipment switching technology, in particular to the field of space-borne switching technology. Background technique [0002] Switch Fabric (Switch Fabric) refers to the switch used to forward packets between different ports in the switching system. It is the core component in the switching system and the physical execution unit to complete the switching process. [0003] The switching structure can be divided into a time-division switching structure and a space-division switching structure according to the internal structure. The shared storage switching device is a commonly used time-division switching structure. [0004] In principle, shared storage switching is the simplest but most applicable switching structure. Data packets from one port to another port are cached in a common storage area first, and when the amount of data is large, they wait...

AI Technical Summary

Problems solved by technology

In this way, for large-scale switches, the memory access time becomes the performance bottleneck of the entire switch, and with the improvement of memory access speed requirements, the cost of memory increases exponentially; and for aerospace-grade devices, it is even more difficult to achieve high-speed access request

[0007] For high-speed and large-capacity on-board routing switches, if a traditional shared storage switching device is used to implement, the capability of the storage device is very high, and it is limited by the read and write speed of the memory.

Considering the reading and writing speed of storage devices, switching capacity requirements, and digital processing device capabilities, it is difficult for existing shared storage switching devices to meet the development requirements of high-speed and large-capacity on-board routing switches.

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