CN103024860A - Method for routing distribution of satellite channel - Google Patents
Method for routing distribution of satellite channel Download PDFInfo
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- CN103024860A CN103024860A CN201210533009XA CN201210533009A CN103024860A CN 103024860 A CN103024860 A CN 103024860A CN 201210533009X A CN201210533009X A CN 201210533009XA CN 201210533009 A CN201210533009 A CN 201210533009A CN 103024860 A CN103024860 A CN 103024860A
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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
The present invention relates to space industry, particularly, relate to a kind of data transmission channel route distribution method based on Spacewire bus plug-and-play feature.
Background technology
The SpaceWire bus is that European Space Agency is based on two commercial standard (CS) IEEE 1355-1995 and IEEE 1596.3(LVDS), by the improvement to aspects such as IEEE 1355 reliabilities, power consumptions, can satisfy aerospace applications better and a kind of bus standard that is specifically designed to the space high speed data transfer of proposing.The structure that it adopts point-to-point to connect can use multiple bus, network topology to have the very high degree of freedom in same network simultaneously.And each equipment room has special-purpose a connection, therefore, even the data transmission bauds of each connection of equipment room is not high, still can improve exponentially by the method that increases bus number the data transmission bauds of whole network, and single line speed reaches as high as 400Mbps.
The SpaceWire bus is as aiming at AEROSPACE APPLICATION and the serial full duplex network communication technology of a kind of high speed of designing, scalable, low-power consumption has flexibly autgmentability, efficiently the characteristics such as data transmission credibility.Adopt the SpaceWire bussing technique can not only support the expansion of payload, satisfy the demand of loading device plug and play, also make satellite platform possess flexibly transfer of data and networking recombination function simultaneously, for the platform interface standardization is laid a good foundation.Yet present miniature channel route assignment designs the function of inapplicable SpaceWire bus plug and play, so that the application of SpaceWire bus plug-and-play feature is restricted.Therefore, the present invention makes improvements to satisfy the demand based on Spacewire bus plug-and-play feature to the design of satellite channel route assignment.
Summary of the invention
For defective of the prior art, the purpose of this invention is to provide a kind of satellite channel route distribution method, the present invention can carry out autonomous distribution and control to the channel route of payload equipment, can realize that satellite is based on the function of Spacewire bus plug and play.
According to an aspect of the present invention, provide a kind of satellite channel route distribution method, may further comprise the steps:
Step 1, after the payload equipment access Spacewire bus network, passing of satelline bus control unit carries out poll to payload equipment, reads the electronic data sheet of Loading End, obtains the message transmission rate of load;
Step 2, bus control unit compares any two-way in the multichannel payload that obtains or the transmission data rate sum of multichannel and the transmission rate of destination address A or destination address B, is the load distribution routed path according to comparative result, is specially:
If the transmission data rate sum of any two-way or multichannel is less than the transmission rate of destination address A or destination address B in the multichannel, bus control unit can any two-way or multichannel Loading End Spacewire node-routing path values be set to same output destination address, i.e. destination address A or destination address B;
If the transmission data rate sum of any two-way or multichannel is greater than the transmission rate of destination address A or destination address B in the multichannel, bus control unit can independently distribute route, wherein one or more Loading End Spacewire node-routing path values is set to destination address A, and remaining all Loading End Spacewire node-routing path values are set to destination address B, guarantee the routed path value be the data rate sum of loading device of destination address A less than the transmission rate of destination address A, the routed path value is that the data rate sum of loading device of destination address B is less than the transmission rate of destination address B simultaneously;
Step 3, after route assignment is finished, the transmission path of payload by arranging, with Packet Generation to route.
Preferably, the method also comprises step 4: when having new payload equipment access or payload equipment to shift out the Spacewire bus network, repeating step one is redistributed the routed path value of payload to step 3.
Adopt the packet header delet method to carry out Route Selection in the step 3.
Compared with prior art, beneficial effect of the present invention is: the present invention is when having new payload equipment access or payload equipment to shift out the Spacewire bus network, by control bus equipment is carried out poll by the satellite bus controller, read the data-rate information in the electronic data sheet of each payload, and any two-way in the multichannel payload that obtains or the transmission data rate sum of multichannel and the transmission rate of destination address A or destination address B compared, be the load distribution routed path according to comparative result, under the prerequisite of message transmission rate sum less than the transmission rate of SpaceWire router destination address A or destination address B that guarantees each road payload, channel route to payload equipment is carried out autonomous distribution and control, realize the function of satellite based on Spacewire bus plug and play, satisfied the channel design demand of Spacewire bus plug-and-play feature.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the payload of application the inventive method and the annexation principle schematic between the number biography integrated treatment module;
Fig. 2 is the packet header deletion routing principle schematic diagram of the embodiment of the invention.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Spacewire(SpW) network topology structure that is comprised of Spacewire network node and multi-layer switches of bus network, passing of satelline Spacewire bus realizes collection, the multiple connection of load high-speed data.The Path selection in the load data bag transmission course is mainly finished in the control of SpW network route, and the acquiescence of taking suitable channel route assignment strategy to change the load data bag is transmitted route.Payload equipment and satellite data transmission integrated treatment intermodule annexation such as Fig. 1.
The route transmission rate of SpaceWire bus network requires: the peak rate that payload equipment sends must be less than SpaceWire route transmission rate.As shown in Figure 1, the message transmission rate of payload 1 ~ payload N or multichannel load transmission rate sum must be all less than the transmission rate of SpaceWire router destination address A or destination address B.
Route transmission rate requirement based on above SpaceWire bus network, and the channel design demand of Spacewire bus plug-and-play feature, the invention provides a kind of satellite channel route distribution method, the method is after payload equipment access Spacewire bus network, passing of satelline control bus carries out poll to payload equipment, reads the electronic data sheet of Loading End.Bus control unit injects the routed path data according to reading the load data transmission rate that obtains to Loading End, with the routed path value (default value) in the register of configuration respective loads end SpW node, realizes the route assignment of SpW node.Specifically may further comprise the steps:
Step 1, after the payload equipment access Spacewire bus network, passing of satelline bus control unit carries out poll to payload equipment, reads the electronic data sheet of Loading End, obtains the message transmission rate of load;
Step 2, bus control unit compares any two-way in the multichannel payload that obtains or the transmission data rate sum of multichannel and the transmission rate of destination address A or destination address B, is the load distribution routed path according to comparative result, is specially:
If the transmission data rate sum of any two-way or multichannel is less than the transmission rate of destination address A or destination address B in the multichannel, bus control unit can any two-way or multichannel Loading End Spacewire node-routing path values be set to same output destination address, i.e. destination address A or destination address B.
If the transmission data rate sum of any two-way or multichannel is greater than the transmission rate of destination address A or destination address B in the multichannel, bus control unit can independently distribute route, wherein one or more Loading End Spacewire node-routing path values is set to destination address A, and remaining all Loading End Spacewire node-routing path values are set to destination address B, guarantee the routed path value be the data rate sum of loading device of destination address A less than the transmission rate of destination address A, the routed path value is that the data rate sum of loading device of destination address B is less than the transmission rate of destination address B simultaneously.
SpaceWire bus data frame format is as shown in the table.
Table 1SpaceWire bus data frame format
| ? | Routed port address (MS) | Routed port address (LS) |
| The target logic address | Protocol-identifier 0x88 | Load ID |
| Load bag counting | Load bag counting | Load bag counting |
| CRC | Data | Data |
| ...... | ...... | ...... |
| ...... | ...... | ...... |
| Data | Data CRC | ? |
Annotate: each lattice length is 8bit length in the table, and dark partial-length is 1006 bytes;
Particularly, the bus control unit of describing in the step 2 is to the action of Loading End route assignment, and the routed port address field realizes in the upper table by changing.Each default route address, load address of initial condition is A, and the transmission rate that requires when each load is during greater than the supported maximum rate of A port, the Route Selection of the data realization port B of routed port address field in showing change in.
Step 3, after route assignment is finished, the transmission path of payload by arranging, with Packet Generation to route.
In this step, after route assignment was finished, payload can be by the transmission path that sets in advance, with Packet Generation to route.The method of SpW network using packet header deletion is carried out Route Selection, finishes this part function by the SpW protocol chip.As shown in Figure 2, when a SPW protocol data wraps in the network when received, detect the first character of bag and save to determine that these bag data are from which port output, first byte of then deleting this bag.After passing through this network node, the first aim port address of the packet of transmission is deleted.
Step 4: when having new payload equipment access or payload equipment to shift out the Spacewire bus network, repeating step one is redistributed the routed path value of payload to step 3.
When having new payload equipment access or payload equipment to shift out the Spacewire bus network, bus control unit can carry out poll to equipment by control bus, data-rate information in the read electric data form, and according to above-mentioned route assignment strategy, routed path value in the register of Loading End SpW node is re-started configuration, realize the autonomous distribution of route.
From the above mentioned, the present invention is by designing the channel route assignment of satellite based on Spacewire bus plug-and-play feature, autonomous distribution and control to Loading End channel route have been realized, realize the function of satellite based on Spacewire bus plug and play, satisfied the channel design demand of Spacewire bus plug-and-play feature.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (3)
1. a satellite channel route distribution method is characterized in that, may further comprise the steps:
Step 1, after the payload equipment access Spacewire bus network, passing of satelline bus control unit carries out poll to payload equipment, reads the electronic data sheet of Loading End, obtains the message transmission rate of load;
Step 2, bus control unit compares any two-way in the multichannel payload that obtains or the transmission data rate sum of multichannel and the transmission rate of destination address A or destination address B, is the load distribution routed path according to comparative result, is specially:
If the transmission data rate sum of any two-way or multichannel is less than the transmission rate of destination address A or destination address B in the multichannel, bus control unit can any two-way or multichannel Loading End Spacewire node-routing path values be set to same output destination address, i.e. destination address A or destination address B;
If the transmission data rate sum of any two-way or multichannel is greater than the transmission rate of destination address A or destination address B in the multichannel, bus control unit can independently distribute route, wherein one or more Loading End Spacewire node-routing path values is set to destination address A, and remaining all Loading End Spacewire node-routing path values are set to destination address B, guarantee the routed path value be the data rate sum of loading device of destination address A less than the transmission rate of destination address A, the routed path value is that the data rate sum of loading device of destination address B is less than the transmission rate of destination address B simultaneously;
Step 3, after route assignment is finished, the transmission path of payload by arranging, with Packet Generation to route.
2. satellite channel route distribution method according to claim 1, it is characterized in that, also comprise step 4: when having new payload equipment access or payload equipment to shift out the Spacewire bus network, repeating step one is redistributed the routed path value of payload to step 3.
3. satellite channel route distribution method according to claim 1 is characterized in that, adopts the packet header delet method to carry out Route Selection in the step 3.
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Cited By (8)
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| CN103347071A (en) * | 2013-06-28 | 2013-10-09 | 深圳市金立通信设备有限公司 | MIPI data transmission control method and electronic device |
| CN103457815A (en) * | 2013-08-22 | 2013-12-18 | 北京航空航天大学 | Method for constructing moment dispatch list suitable for SpaceWire network |
| CN103501238A (en) * | 2013-09-09 | 2014-01-08 | 中国航天科技集团公司第五研究院第五一三研究所 | Plug and play method based on SpaceWire |
| CN105072040A (en) * | 2015-07-31 | 2015-11-18 | 上海卫星工程研究所 | Efficient satellite SpaceWire Plug-and-Play (PnP) network topology construction method |
| CN105187227A (en) * | 2015-06-12 | 2015-12-23 | 北京航空航天大学 | Device utilizing RMAP protocol to realize plug-and-play function of CAN bus equipment |
| CN112468209A (en) * | 2020-10-29 | 2021-03-09 | 西安空间无线电技术研究所 | On-orbit high-speed injection system and method based on SpaceWire bus |
| CN112512066A (en) * | 2020-12-04 | 2021-03-16 | 中国空间技术研究院 | Satellite-borne high-low speed hybrid data transmission system |
| CN113645676A (en) * | 2021-08-13 | 2021-11-12 | 中国人民解放军63620部队 | Service data sending method and device, computer equipment and storage medium |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103347071A (en) * | 2013-06-28 | 2013-10-09 | 深圳市金立通信设备有限公司 | MIPI data transmission control method and electronic device |
| CN103347071B (en) * | 2013-06-28 | 2017-02-08 | 深圳市金立通信设备有限公司 | MIPI data transmission control method and electronic device |
| CN103457815A (en) * | 2013-08-22 | 2013-12-18 | 北京航空航天大学 | Method for constructing moment dispatch list suitable for SpaceWire network |
| CN103457815B (en) * | 2013-08-22 | 2016-03-30 | 北京航空航天大学 | A kind of construction method being applicable to the moment dispatch list of SpaceWire network |
| CN103501238A (en) * | 2013-09-09 | 2014-01-08 | 中国航天科技集团公司第五研究院第五一三研究所 | Plug and play method based on SpaceWire |
| CN105187227B (en) * | 2015-06-12 | 2018-08-17 | 北京航空航天大学 | A kind of device using RMAP protocol realization CAN bus equipment plug and play |
| CN105187227A (en) * | 2015-06-12 | 2015-12-23 | 北京航空航天大学 | Device utilizing RMAP protocol to realize plug-and-play function of CAN bus equipment |
| CN105072040A (en) * | 2015-07-31 | 2015-11-18 | 上海卫星工程研究所 | Efficient satellite SpaceWire Plug-and-Play (PnP) network topology construction method |
| CN105072040B (en) * | 2015-07-31 | 2018-08-03 | 上海卫星工程研究所 | Efficient satellite SpaceWire plug and play network topological construction methods |
| CN112468209A (en) * | 2020-10-29 | 2021-03-09 | 西安空间无线电技术研究所 | On-orbit high-speed injection system and method based on SpaceWire bus |
| CN112468209B (en) * | 2020-10-29 | 2022-06-03 | 西安空间无线电技术研究所 | On-orbit high-speed injection system and method based on SpaceWire bus |
| CN112512066A (en) * | 2020-12-04 | 2021-03-16 | 中国空间技术研究院 | Satellite-borne high-low speed hybrid data transmission system |
| CN112512066B (en) * | 2020-12-04 | 2024-06-07 | 中国空间技术研究院 | Satellite-borne high-low speed mixed data transmission system |
| CN113645676A (en) * | 2021-08-13 | 2021-11-12 | 中国人民解放军63620部队 | Service data sending method and device, computer equipment and storage medium |
| CN113645676B (en) * | 2021-08-13 | 2023-12-15 | 中国人民解放军63620部队 | Service data sending method and device, computer equipment and storage medium |
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