Method for routing distribution of satellite channel

A distribution method and satellite channel technology, applied in the aerospace field, can solve the problems of SpaceWire bus limitation, inapplicable SpaceWire bus plug-and-play, etc., and achieve the effect of meeting the channel design requirements

Active Publication Date: 2013-04-03
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

However, the current micro-channel routing design is not suitable for the plug-and-play function of

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  • Method for routing distribution of satellite channel
  • Method for routing distribution of satellite channel

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0018] The Spacewire (SpW) bus network is a network topology composed of Spacewire network nodes and routing switches. The satellite realizes the collection and multiplexing of high-speed payload data through the Spacewire bus. SpW network routing control mainly completes the path selection in the process of payload data packet transmission, and adopts an appropriate channel routing allocation strategy to change the default forwarding route of payload data packets. The connection relationship betw...

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Abstract

The invention provides a method for routing distribution of a satellite channel. After an effective load device accesses a Spacewire bus network, a satellite conducts polling on the effective load device through a bus controller, reads an electronic data table at a load end and obtains data transmission rates of loads, then the bus controller compares any two channels of a plurality of obtained channel of effective loads or the sum of a plurality of data transmission rates with the transmission rate of a destination address A or the transmission rate of a destination address B, as per the principle that the load transmission rate in the Spacewire bus network must be lower than the transmission rate of the destination address A of a router or the transmission rate of the destination address B of the router, routing paths are distributed for loads according to the comparison results, after the routing distribution is finished, effective loads send data packets to the router through set transmission paths. By the aid of the method, the Spacewire bus based plug and play function of the satellite can be implemented, and the requirements of channel design of the Spacewire bus plug and play function can be met.

Description

technical field [0001] The invention relates to the aerospace field, in particular to a data transmission channel routing allocation method based on the Spacewire bus plug-and-play function. Background technique [0002] SpaceWire is a bus proposed by ESA based on two commercial standards IEEE 1355-1995 and IEEE 1596.3 (LVDS). By improving the reliability and power consumption of IEEE 1355, it can better meet aerospace applications. A bus standard dedicated to high-speed data transmission in space. It adopts a point-to-point connection structure, multiple buses can be used simultaneously in the same network, and the network topology has a high degree of freedom. And there is a dedicated connection between each device, so even if the data transmission speed of each connection between devices is not high, the data transmission speed of the entire network can be doubled by increasing the number of buses, and the single-line rate can reach up to 400Mbps. [0003] As a high-sp...

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Application Information

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IPC IPC(8): H04W40/12H04W84/06
Inventor 陈锋杨帅游月辉孔祥龙赖京徐晔周飞宇
Owner SHANGHAI SATELLITE ENG INST
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