CN102984220B - Burst data downloading communication method for spacecraft multilevel subnets - Google Patents
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Abstract
The invention discloses a burst data downloading communication method for spacecraft multilevel subnets and belongs to the technical field of communication. A remote terminal A remote control package is produced by a ground station, packaged in a remote control frame and transmitted to a primary subnet main control terminal. All-level subnet main control terminals judge whether the remote control frame belongs to the level subnet. If the remote control frame belongs to the level subnet, a corresponding remote terminal is informed to prepare data so as to carry out other operations, and otherwise the remote control frame is transferred to a sub-level subnet main control terminals until the remote terminal A is informed to prepare data. After the data is well prepared by the remote terminal A, request is put forward. Once all-level subnet main control terminals search for the request of the remote terminal A, data is obtained, and then requests are put forward to the super-level subnet main control terminals until the data reach the primary subnet main control terminal. The primary subnet main control terminal forms the received data to burst data downloading frames, corresponding data channels are scheduled to finish downloading. After the downloading is fished, transmission of regular data downloading is recovered. The burst data downloading communication method is capable of improving flexibility of the burst data downloading of spacecraft mounted network transmission.
Description
Technical field
The invention discloses a kind of burst downlink data communication method for spacecraft multilevel subnetwork, belong to communication technical field.
Background technology
According to network topology structure, spacecraft device carries network and is made up of multiple subnet, there is a main control terminal and multiple remote terminal in each subnet, this main control terminal is simultaneously also as the remote terminal of upper level subnet, connect two subnets, as shown in Figure 1, subnet 1 is most higher level's subnet of whole network, 3 subnets simultaneously also as the remote terminal of subnet 1, thus connect as one by the main control terminal of subnet 2,3.In each subnet, the downlink data of transmission all will by the main control terminal of this subnet.By this connected mode, multiple subnet constitutes a complete device and carries network, and all downlink datas complete last collecting by the main control terminal of most higher level's subnet, form downlink data frame and are sent to ground station.
There is the downlink data of two types in spacecraft: conventional downlink data and burst downlink data.In the use of down channel, physical channel is divided into two independently pseudo channel VC1 and VC2, conventional downlink data and burst downlink data carry out descending transmission respectively.Take physical channel at VC1 at ordinary times periodically to transmit, when spacecraft creating burst downlink data, schedulable VC2 by seizing the mode of physical channel, or transmits according to the mode of certain transmission ratio shared physical channel with VC1.
Traditional spacecraft device carries network based on single network, and all transfer of data are initiated by this network master control terminal, select different transmission methods according to the different pieces of information collected.Two class data transmission methods are as follows respectively:
(1) transmission of conventional downlink data
At whole spacecraft, period exists these type of data always in-orbit, and transmits according to certain biography cycle down according to the situation of change of data.Therefore the transmission of these type of data in network has main control terminal to be responsible for, according to the respective collection period requirement of data, periodically obtain from each remote terminal, after wherein the main control terminal of subnet 2,3 obtains the routine data of each remote terminal at the corresponding levels, data are organized in requirement according to spacecraft internal network communication agreement, wait for the acquisition of subnet 1 main control terminal, after subnet 1 obtains these type of data of each remote terminal at the corresponding levels and subnet 2,3 main control terminal, according to the requirement of spacecraft downstream data format, generate VC1 downlink data frame, and be sent to ground station.
(2) happen suddenly downlink data
The feature of these type of data is, in spacecraft period in-orbit, the most of the time all can not produce, but once produce this type of data, passes under will completing within the as far as possible short time.
Originally when carrying out this type of transfer of data, send to the remote terminal of correspondence instruction of fetching data by main control terminal, (be assumed to be T1) after certain interval of time, then fetch data to remote terminal, stamp corresponding data discrimination information, and pass under forming downlink data frame.During as needed the data of certain remote terminal obtaining subnet 2 when the main control terminal of subnet 1, in the T0 moment, the main control terminal of subnet 1 notifies that its remote terminal (i.e. the main control terminal of subnet 2) prepares data, after the main control terminal of subnet 2 receives orders, notifies that its remote terminal prepares data; After the main control terminal wait T2 time of subnet 2, read data from its remote terminal and stamp corresponding data discrimination information 2, the main control terminal of subnet 1 waits for that (T1+T2) is after the time, reads data from its remote terminal (i.e. the main control terminal of subnet 2) and stamps corresponding data discrimination information 1.Visible, the data of fetch data instruction and passback all need the forwarding through subnet 2 main control terminal, in subnet 2, also have certain T2 interval time, and after such subnet 1 main control terminal needs to wait for the T1+T2 time, carry out operation of fetching data, process as shown in Figure 2.The value of T1 and T2 is subject to the properties influence such as communication protocol, physical layer of subnet 1, subnet 2, and also will ensure time enough surplus, efficiency is not high.
Simultaneously, when device carries extension of network to multilevel subnetwork, when initiating bursty data acquisition process from main control terminal, need through the operation repeatedly sending instruction, fetch data, obtained by upper level subnet, often through primary subnet, can increase a time delay according to the characteristic of this subnet, be accumulated to the superiors' subnet, time delay increases, and be subject to the impact of different subordinates subnet net characteristic, time delay is not a general numerical value, and main control terminal control logic is too fat to move, is difficult to realize.And every grade of main control terminal all needs to understand data content, and stamps Data Identification layer by layer according to content, such higher level's main control terminal just must understand composition and the characteristic of all subordinates subnet, design is complicated, and does not meet the mutual independently design principle of subnet, is unfavorable for very much the expansion of network.
Summary of the invention
Given this, the invention provides a kind of burst downlink data communication method for spacecraft multilevel subnetwork, making spacecraft device carry network can while the function ensureing original conventional downlink data transmission, improve the flexibility of burst downlink data, simplify the control logic of Handshake Protocol and main control terminal.
Spacecraft multilevel subnetwork, namely spacecraft device carries network, is made up of multiple subnet, and wherein, the main control terminal in first order subnet can directly be communicated with ground station by spacecraft answering machine; Main control terminal in subnet is the remote terminal in upper level subnet;
When there is request of data in ground station to certain remote terminal in spacecraft multilevel subnetwork, the specific implementation step of described burst downlink data communication method is as follows:
(1) ground station generates the remote control bag to certain remote terminal requests data, being encapsulated as remote control frame, carrying remote control frame identification for representing which subnet remote control frame belongs in remote control frame according to the requirement of the up injection form of up channel; Described remote control frame is sent to spacecraft, after answering machine demodulation, is sent to the main control terminal of first order subnet; Described remote control handbag contains for representing that remote control bag belongs to the remote control bag mark of which remote terminal;
(2) according to remote control frame identification, the main control terminal of first order subnet judges whether the remote control frame received belongs to subnet at the corresponding levels, if so, then directly notifies that corresponding remote terminal prepares data according to remote control bag content, no longer waits for, then perform other work; Otherwise remote control frame is forwarded to the main control terminal of the next stage subnet self connected, and transfers to perform other work after completing forwarding;
(3) according to remote control frame identification, the main control terminal of subnet at different levels judges whether the remote control frame received belongs to subnet at the corresponding levels, if, then directly notify that corresponding remote terminal prepares data according to remote control bag content, otherwise remote control frame is forwarded to the main control terminal of the next stage subnet self connected, until notify that ground station requires that the remote terminal of uploading data prepares data;
(4) ground station requires that the remote terminal of uploading data gets out corresponding data according to remote control bag content, and is packaged into remote measurement bag, and the main control terminal to its place subnet proposes data transport service request;
(5) main control terminal of subnet at different levels with the time set as the cycle, whether the remote terminal of inquiry place subnet has data transport service request, once inquire data transport service request, then obtain the ready data of remote terminal, and notify this remote terminal DTD, then upwards the main control terminal of primary subnet proposes data transport service request, until described ready data arrive the main control terminal of first order subnet;
(6) main control terminal of first order subnet is by the requirement according to downstream data format of the described ready data that get, composition burst downlink data frame, according to burst downlink data frame and the transmission policy of conventional downlink data frame, take physical channel and complete down and pass;
(7) happen suddenly after passing under downlink data frame and terminating, the main control terminal of first order subnet stops the transmission of burst downlink data frame, recovers the conventional downlink data frame before transmission.
When ground station does not does not generate and send the remote control bag to certain the remote terminal requests data in spacecraft multilevel subnetwork, but when remote terminal passes under having burst downlink data to need, the specific implementation step of described burst downlink data communication method is:
S1: burst downlink data is packaged into remote measurement bag by remote terminal, the main control terminal to its place subnet proposes data transport service request;
S2: the main control terminal of subnet at different levels with the time set as the cycle, whether the remote terminal of inquiry place subnet has data transport service request, once inquire data transport service request, then obtain the ready data of remote terminal, and notify this remote terminal DTD, then upwards the main control terminal of primary subnet proposes data transport service request, until described ready data arrive the main control terminal of first order subnet;
S3: the main control terminal of first order subnet is by the requirement according to downstream data format of the described ready data that get, and composition burst downlink data frame, according to the transmission policy of burst downlink data frame and conventional downlink data frame, takies physical channel and complete down and pass;
S4: pass under burst downlink data frame after terminating, the main control terminal of first order subnet stops the transmission of burst downlink data frame, the biography mode down before recovery.
Described burst downlink data frame and the transmission policy of conventional downlink data frame refer to that burst downlink data frame seizes the transfer channel of conventional downlink data frame, or burst downlink data frame and conventional downlink data frame take transfer channel down-transmitting data in turn according to certain ratio.
Beneficial effect
The present invention relates under the spacecraft device be made up of multistage network carries network environment, how downlink data is through multistage network, finally be pooled to a kind of communication means of down channel, be applied to all kinds of spacecrafts that multistage device carries data network topology structure, the cyclical transmission of conventional downlink data can be realized, also can realize the burst downlink data produced by all kinds of accident with passing at present, improve the biography real-time down of burst downlink data, enhance the ability that each network-termination device independently exports burst downlink data, when passing demand under nothing burst downlink data simultaneously, do not take the transmission channel of conventional downlink data.
Main control terminal is no longer concerned about time interval problem, gives remote terminal by the right of data back, and main control terminal can get data within the shortest time, does not need to consider surplus problem, improves efficiency;
The main control terminal of subnet does not need for the return data of each remote terminal identifies, and this work is carried out voluntarily by remote terminal, saves the time further, accelerates data reading speed;
Main control terminal no longer needs the network characteristic understanding all subordinates subnet, simplify control logic, improve the independence of subnet at different levels, when subnet progression continues to expand, any impact can not be produced on the work of higher level's subnet, drastically increase the extendible ability of network.
Accompanying drawing explanation
Fig. 1 is that spacecraft device carries schematic network structure;
Fig. 2 is the transfer process of traditional bursty data;
Fig. 3 is the transfer process of the present invention to bursty data;
Fig. 4 carries schematic network structure for certain spacecraft device;
Fig. 5 is specific embodiment flow chart.
Embodiment
The invention provides a kind of burst downlink data communication method for spacecraft multilevel subnetwork, its basic thought spacecraft network inwardly projecting is sent out the initiation of downlink data transmission and data back separates, the source of each free data is responsible for, wherein transmission is initiated to be responsible for by the main control terminal of subnet, and the passback of data is responsible for by remote terminal, main control terminal is after sending to the remote terminal of correspondence instruction of fetching data, just no longer wait for, can then carry out other work, and after remote terminal gets out data, to main control terminal, burst transfers of data request is proposed.
Spacecraft multilevel subnetwork, namely spacecraft device carries network, is made up of multiple subnet, and wherein, subnet 1 is first order subnet, and the main control terminal of subnet 1 can directly be communicated with ground station by spacecraft answering machine; Main control terminal in subnet is the remote terminal in upper level subnet;
As shown in Figure 3, when ground station requires the remote terminal uploading data of certain subnet, specific implementation step is as follows:
(1) ground station generates the remote control bag to certain remote terminal A request msg meeting CCSDS prescribed form, wherein comprise the internal memory sense order of remote terminal A, according to the requirement of the up injection form of up channel, being encapsulated as remote control frame, carrying remote control frame identification in remote control frame for representing which subnet remote control frame belongs to; Described remote control frame is sent to spacecraft, after answering machine demodulation, is sent to the main control terminal of subnet 1;
(2) according to remote control frame identification, the main control terminal of subnet 1 judges whether the remote control frame received belongs to subnet at the corresponding levels, if so, then directly notifies that corresponding remote terminal prepares data according to remote control bag content, no longer waits for, then perform other work; Otherwise remote control frame is forwarded to the main control terminal of the next stage subnet (subnet 2 namely in Fig. 3) self connected, and transfers to perform other work after completing forwarding; After the main control terminal of subnet 1 completes forwarding, proceed other work;
(3) according to remote control frame identification, the main control terminal of second level subnet judges whether the remote control frame received belongs to subnet at the corresponding levels, if so, then directly notifies that corresponding remote terminal prepares data according to remote control bag content, no longer waits for, then perform other work; Otherwise remote control frame is forwarded to the main control terminal of the next stage subnet (subnet 3 namely in Fig. 3) self connected, and transfers to perform other work after completing forwarding; After the main control terminal of second level subnet completes forwarding, proceed other work;
(4) according to remote control frame identification, the main control terminal of subnet at different levels judges whether the remote control frame received belongs to subnet at the corresponding levels successively, if so, then directly notifies that corresponding remote terminal prepares data according to remote control bag content, no longer waits for, then perform other work; Otherwise remote control frame is forwarded to the main control terminal of the next stage subnet self connected, until notify that ground station requires that the remote terminal A of uploading data prepares data; After the main control terminal of subnet at different levels completes forwarding, no longer wait for, proceed other work; Other described work refers to main control terminal ongoing work before being interrupted, and such as spacecraft controls from main temperature, also can be predetermined other work that will carry out, and manages as controlled steerable energy by spacecraft from main temperature;
(5) after ground station requires that the remote terminal A of uploading data identifies the internal memory sense order of self from remote control bag, get out corresponding data, and being packaged into the remote measurement bag meeting CCSDS prescribed form, the main control terminal to its place subnet (the subnet n namely in Fig. 3) proposes data transport service request;
(6) ground station requires the main control terminal of the remote terminal A place subnet (the subnet n namely in Fig. 3) of uploading data with the time set as the cycle, whether inquiry remote terminal A has data transport service request, once inquire data transport service request, then obtain the ready data of remote terminal A, and notify remote terminal A DTD, remote terminal A no longer proposes data transport service request to the main control terminal of its place subnet, then the main control terminal of the main control terminal of remote terminal A place subnet upwards primary subnet (the subnet n-1 namely in Fig. 3) proposes data transport service request,
(7) main control terminal of subnet at different levels successively with the time set as whether cyclic polling subnet remote terminal at the corresponding levels has data transport service request, once inquire data transport service request, then obtain ready data, and the remote terminal transmission that notice sends data transport service request terminates, remote terminal no longer proposes data transport service request to the main control terminal of its place subnet, then the main control terminal of the main control terminal of remote terminal place subnet upwards primary subnet proposes data transport service request, until described ready data arrive the main control terminal of first order subnet 1,
(8) main control terminal of first order subnet 1 is by the requirement according to downstream data format of the described ready data that get, composition burst downlink data frame, according to burst downlink data frame and the transmission policy of conventional downlink data frame, take physical channel and complete down and pass;
(9) happen suddenly after passing under downlink data frame and terminating, the main control terminal of first order subnet 1 stops the transmission of burst downlink data frame, recovers the conventional downlink data frame before transmission.
When ground station is not to certain the remote terminal requests data in spacecraft multilevel subnetwork, but when remote terminal passes under having burst downlink data to need, specific implementation step is:
S1: burst downlink data is packaged into remote measurement bag by remote terminal, the main control terminal to its place subnet proposes data transport service request;
S2: the main control terminal of subnet at different levels with the time set as the cycle, whether the remote terminal of inquiry place subnet has data transport service request, once inquire data transport service request, then obtain the ready data of remote terminal, and notify this remote terminal DTD, then upwards the main control terminal of primary subnet proposes data transport service request, until described ready data arrive the main control terminal of first order subnet;
S3: the main control terminal of first order subnet is by the requirement according to downstream data format of the described ready data that get, and composition burst downlink data frame, according to the transmission policy of burst downlink data frame and conventional downlink data frame, takies physical channel and complete down and pass;
S4: pass under burst downlink data frame after terminating, the main control terminal of first order subnet stops the transmission of burst downlink data frame, recovers the conventional downlink data frame before transmission.
Described burst downlink data frame and the transmission policy of conventional downlink data frame refer to that burst downlink data frame seizes the transfer channel of conventional downlink data frame, or burst downlink data frame and conventional downlink data frame take transfer channel down-transmitting data in turn according to certain ratio.
Below in conjunction with Figure of description and instantiation, the present invention is described in further details.
Certain spacecraft device carries network and is made up of 3 subnets, and wherein subnet 1 is first order subnet, directly communicates with ground station by spacecraft answering machine, and subnet 2 and subnet 3 are second level subnet, are equipped with 1553B bus in subnet at different levels; In each subnet, main control terminal and remote terminal are all connected in the 1553B bus of this subnet, and main control terminal works in 1553B bus marco pattern, and remote terminal is operated in 1553B bus remote terminal pattern; And except first order subnet, the main control terminal of other each subnets is also connected in the 1553B bus of upper level subnet, but it is still operated in the 1553B bus remote terminal pattern of this subnet; As shown in Figure 4, the component devices of whole network comprises:
Number guard system administrative unit: SMU1, SMU2, SMU3;
Attitude and orbit control computer: GNCC1, GNCC2, GNCC3;
Other equipment: Complex interface unit, sample transfer device, sampling encapsulation controller, power-supply controller of electric PIU etc.
Each several guard system administrative unit works in 1553B bus marco pattern (BC), and as the main control terminal of each subnet, other all devices are all operated in 1553B bus remote terminal pattern (RT), as the remote terminal of each subnet.
The communication channel of this spacecraft and ground station is undertaken unifying to control by several guard system administrative unit SMU1, uplink and downlink communication is completed by answering machine and ground station, down channel is divided into two pseudo channel VC1 and VC2, wherein VC1 is for transmitting conventional downlink data, and VC2 is for transmitting burst downlink data, and VC1 takies physical channel and carries out transfer of data at ordinary times, when there being burst downlink data descending, VC2 seizes physical channel and transmits, and terminates the rear release right to use, continues transmission VC1.
To read the burst downlink data of this spacecraft, ground station's order main control terminal reads length according to appointment, reaches ground station, for Ground analysis by under the internal storage data of the remote terminal GNCC2 of subnet 2.As shown in Figure 5, specific implementation step is:
(1) ground station generates the GNCC2 remote control bag meeting CCSDS prescribed form, wherein comprise the internal memory sense order of GNCC2, according to the requirement of the up injection form of up channel, be encapsulated as the remote control frame of subnet 2, and remote control frame is sent to spacecraft, after answering machine demodulation, be sent to SMU1;
(2) SMU1 is according to remote control frame identification, identifies that this frame is the data of subnet 2, forwards it to SMU2; After SMU1 completes forwarding, proceed other work;
(3) SMU2 is according to remote control bag mark, identifies that this remote control bag is the remote control bag of GNCC2, forwards it to GNCC2; After SMU2 completes forwarding, proceed other work;
(4) after GNCC2 identifies the internal memory sense order of self from this remote control bag, get out corresponding data, and be packaged into the remote measurement bag meeting CCSDS prescribed form, the mode being sent vector font by bus proposes data transport service request to SMU2;
(5) SMU2 take 125ms as the cycle, whether inquiry GNCC2 has the request of transfer of data, once inquire this request, then obtain these data, by synchronization character notice GNCC2 DTD, GNCC2 no longer proposes data transport service request to SMU2, and then SMU2 sends the mode of vector font to the request of SMU1 proposition data transport service by bus;
(6) SMU1 take 125ms as the cycle, and whether inquiry SMU2 has the request of transfer of data, once inquire this request, then obtains this data, and by synchronization character notice SMU2 DTD, SMU2 no longer proposes data transport service request to SMU1;
(7) SMU1 is by the requirement according to downstream data format of the remote measurement bag that gets, composition burst downlink data frame, and scheduling VC2 seizes physical channel and completes down and pass;
(8) happen suddenly after passing under downlink data frame and terminating, SMU1 stops VC2, recovers VC1 and continues to transmit conventional downlink data.
In sum, these are only a kind of preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. for a burst downlink data communication method for spacecraft multilevel subnetwork, spacecraft multilevel subnetwork is made up of multiple subnet, and wherein, the main control terminal in first order subnet is directly communicated with ground station by spacecraft answering machine; Main control terminal in subnet is the remote terminal in upper level subnet; It is characterized in that:
Described burst downlink data communication method specific implementation step is as follows:
(1) ground station generates the remote control bag to certain remote terminal requests data, being encapsulated as remote control frame, carrying remote control frame identification for representing which subnet remote control frame belongs in remote control frame according to the requirement of the up injection form of up channel; Described remote control frame is sent to spacecraft, after answering machine demodulation, is sent to the main control terminal of first order subnet;
(2) according to remote control frame identification, the main control terminal of first order subnet judges whether the remote control frame received belongs to subnet at the corresponding levels, if so, then directly notifies that corresponding remote terminal prepares data according to remote control content frame, no longer waits for, then perform other work; Otherwise remote control frame is forwarded to the main control terminal of the next stage subnet self connected, and transfers to perform other work after completing forwarding;
(3) according to remote control frame identification, the main control terminal of subnet at different levels judges whether the remote control frame received belongs to subnet at the corresponding levels, if, then directly notify that corresponding remote terminal prepares data according to remote control content frame, otherwise remote control frame is forwarded to the main control terminal of the next stage subnet self connected, until notify that ground station requires that the remote terminal of uploading data prepares data;
(4) ground station requires that the remote terminal of uploading data gets out corresponding data according to remote control bag content, and is packaged into remote measurement bag, and the main control terminal to its place subnet proposes data transport service request;
(5) main control terminal of subnet at different levels with the time set as the cycle, whether the remote terminal of inquiry place subnet has data transport service request, once inquire data transport service request, then obtain the ready data of remote terminal, and notify this remote terminal DTD, then upwards the main control terminal of primary subnet proposes data transport service request, until described ready data arrive the main control terminal of first order subnet;
(6) main control terminal of first order subnet is by the requirement according to downstream data format of the described ready data that get, composition burst downlink data frame, according to burst downlink data frame and the transmission policy of conventional downlink data frame, take physical channel and complete down and pass;
(7) happen suddenly after passing under downlink data frame and terminating, the main control terminal of first order subnet stops the transmission of burst downlink data frame, recovers the conventional downlink data frame before transmission.
2. a kind of burst downlink data communication method for spacecraft multilevel subnetwork as claimed in claim 1, is characterized in that: be equipped with 1553B bus in each subnet in described spacecraft multilevel subnetwork; In each subnet, main control terminal and remote terminal are all connected in the 1553B bus of this subnet, and main control terminal works in 1553B bus marco pattern, and remote terminal is operated in 1553B bus remote terminal pattern; And except first order subnet, the main control terminal of other each subnets is also connected in the 1553B bus of upper level subnet.
3. a kind of burst downlink data communication method for spacecraft multilevel subnetwork as claimed in claim 1, is characterized in that:
When ground station does not does not generate and send the remote control bag to certain the remote terminal requests data in spacecraft multilevel subnetwork, but when described remote terminal passes under having burst downlink data to need, specific implementation process is:
S1: burst downlink data is packaged into remote measurement bag by remote terminal, the main control terminal to its place subnet proposes data transport service request;
S2: the main control terminal of subnet at different levels with the time set as the cycle, whether the remote terminal of inquiry place subnet has data transport service request, once inquire data transport service request, then obtain the ready data of remote terminal, and notify this remote terminal DTD, then upwards the main control terminal of primary subnet proposes data transport service request, until described ready data arrive the main control terminal of first order subnet;
S3: the main control terminal of first order subnet is by the requirement according to downstream data format of the described ready data that get, and composition burst downlink data frame, according to the transmission policy of burst downlink data frame and conventional downlink data frame, takies physical channel and complete down and pass;
S4: pass under burst downlink data frame after terminating, the main control terminal of first order subnet stops the transmission of burst downlink data frame, recovers the conventional downlink data frame before transmission.
4. as claim 1 or a kind of burst downlink data communication method for spacecraft multilevel subnetwork according to claim 3, it is characterized in that: described burst downlink data frame and the transmission policy of conventional downlink data frame refer to that burst downlink data frame seizes the transfer channel of conventional downlink data frame, or burst downlink data frame and conventional downlink data frame take transfer channel down-transmitting data in turn according to certain ratio.
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| CN109147921A (en) * | 2018-08-16 | 2019-01-04 | 上海联影医疗科技有限公司 | Data transmission method, collecting method and the system of Medical Devices |
Families Citing this family (4)
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| CN105407003B (en) * | 2015-12-07 | 2018-08-03 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of data of 1553 bus add discharging method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5828832A (en) * | 1996-07-30 | 1998-10-27 | Itt Industries, Inc. | Mixed enclave operation in a computer network with multi-level network security |
| CN1426194A (en) * | 2001-12-20 | 2003-06-25 | 深圳市中兴通讯股份有限公司上海第二研究所 | Route processing method for multi-stage network management system |
| CN1983954A (en) * | 2006-04-24 | 2007-06-20 | 华为技术有限公司 | Multi-stage network administration system and method for processing northward interface in it |
| CN101022367A (en) * | 2007-03-27 | 2007-08-22 | 杭州华为三康技术有限公司 | Network management method and system |
| CN102123083A (en) * | 2011-01-17 | 2011-07-13 | 广州中道电子科技有限公司 | Intelligent application network |
-
2012
- 2012-11-13 CN CN201210455040.6A patent/CN102984220B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5828832A (en) * | 1996-07-30 | 1998-10-27 | Itt Industries, Inc. | Mixed enclave operation in a computer network with multi-level network security |
| CN1426194A (en) * | 2001-12-20 | 2003-06-25 | 深圳市中兴通讯股份有限公司上海第二研究所 | Route processing method for multi-stage network management system |
| CN1983954A (en) * | 2006-04-24 | 2007-06-20 | 华为技术有限公司 | Multi-stage network administration system and method for processing northward interface in it |
| CN101022367A (en) * | 2007-03-27 | 2007-08-22 | 杭州华为三康技术有限公司 | Network management method and system |
| CN102123083A (en) * | 2011-01-17 | 2011-07-13 | 广州中道电子科技有限公司 | Intelligent application network |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147921A (en) * | 2018-08-16 | 2019-01-04 | 上海联影医疗科技有限公司 | Data transmission method, collecting method and the system of Medical Devices |
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