Mixed switching structure suitable for satellite-borne processing transponder

Abstract

A mixed switching structure suitable for a satellite-borne processing transponder comprises entry port processing units, a sharing buffer, a space division switching unit, a switching control unit and frame shapers. Then entry port processing units perform adaptation and sorting processing on time slot frames, and output two paths after processing, a path of continuous time slot frames are sent to the space division switching unit, and a path of packet data stream is sent to the sharing buffer; the sharing buffer is used for distribution and mapping management of buffer memory space, and outputs corresponding packets to the frame shaper of a specified port according to a dispatching instruction; the space division unit sends time slots of the entry port to the frame shaper according to control information; the frame shaper puts the time slots in a specified time slot cache region, the packets output by the sharing buffer are packaged to unoccupied business time slots according to priority, and data serial output of the specified time slot cache region is read according to a frame start sending instruction. The mixed switching structure suitable for the satellite-borne processing transponder can support a circuit switching service and a packet switching service of various speeds, and can support any ratio of the two services.

Description

technical field [0001] The invention relates to a hybrid switching structure suitable for on-board processing transponders, belonging to the field of satellite communication on-board switching. Background technique [0002] In the multi-spot beam satellite communication system, the space-borne switching technology enables all business switching functions to be completed on the star, thereby improving the real-time performance of business transmission and effectively utilizing frequency resources. The existing space-borne switching technology can be divided into two types: space-borne circuit switching and space-borne packet switching. [0003] On-board circuit switching requires both communicating parties to establish a physical channel that is exclusively occupied by both parties before communication. This physical channel can be a time slot (on-board switching-time division multiple access SS / TDMA), or a sub-frequency band (on-board switching-frequency division multiple a...

AI Technical Summary

Problems solved by technology

[0011] Some satellites adopt a hybrid structure of "bent pipe transparent switching of microwave switch matrix + packet switching of baseband processing". Two different types of loads are used to support different types of services, which are divided into two physical layer systems: on-board transparent forwarding loads and On-board processing switching load (including baseband processing), but this mixed structure results in poor flexibility of the entire on-board processing process

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