CN116388844B - Communication control method and system of satellite communication terminal - Google Patents
Communication control method and system of satellite communication terminal Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000006837 decompression Effects 0.000 claims abstract description 118
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application provides a communication control method and a communication control system of a satellite communication terminal, which relate to the technical field of communication and are used for improving the data transmission efficiency of the satellite communication terminal. The method mainly comprises the following steps: acquiring a data packet sent by an acquisition terminal; determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length; the data package is decompressed according to the decompression code by inquiring the decompression code corresponding to the acquisition terminal identifier and the time point of sending the data package in the decompression data table to obtain decompression data; transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data; and transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority, so that the satellite transmits the received decompressed data to a data processing platform.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and a system for controlling communications of a satellite communications terminal.
Background
The satellite communication terminal is a data communication system based on a static satellite, and has the function of collecting and receiving useful information scattered in various global places, especially weather, hydrology, environmental monitoring, science, management and other data aiming at an unmanned area (which cannot be covered by the traditional communication means) through the satellite and transmitting the data to corresponding departments.
Compared with ground communication, the satellite communication terminal is far away from the satellite, has large transmission loss and low transmission efficiency, and is usually provided with a high-gain antenna, a high-power transmitter and a high-sensitivity receiver, so that the satellite communication terminal has the conditions of large size and high cost.
Disclosure of Invention
The embodiment of the application provides a communication control method and a communication control system for a satellite communication terminal, which are used for improving the data transmission efficiency of the satellite communication terminal on the basis of saving the cost of the satellite communication terminal.
The embodiment of the application provides a communication control method of a satellite communication terminal, which is applied to the satellite communication terminal and comprises the following steps:
acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body;
determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, wherein the satellite communication terminal comprises a plurality of data channels, and the data channels are transmitted in parallel by adopting different processes;
the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point;
transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data;
and transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority, so that the satellite transmits the received decompressed data to a data processing platform.
The embodiment of the application provides a communication control system of a satellite communication terminal, which comprises the following components: the system comprises a satellite communication terminal, an acquisition terminal, a satellite and a data processing platform;
the satellite communication terminal is used for sending a data acquisition request to the acquisition terminal;
the acquisition terminal is used for sending a data packet to the satellite communication terminal after receiving the data request, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body;
the satellite communication terminal is used for determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, and comprises a plurality of data channels, wherein different processes are adopted among the data channels for transmitting data in parallel; the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point; transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data; transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority;
the satellite is used for sending the received decompressed data to the data processing platform.
A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the communication control method of the satellite communication terminal described above when executing the computer program.
A computer-readable storage medium storing a computer program which, when executed by a processor, implements the communication control method of the satellite communication terminal described above.
A computer program product comprising a computer program which when executed by a processor implements the communication control method of a satellite communication terminal described above.
The application provides a communication control method and a communication control system of a satellite communication terminal, which are used for acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body; determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, and decompressing the data packet according to the decompression code by inquiring a decompression code corresponding to the acquisition terminal identifier and the time point for transmitting the data packet in a decompression data table to obtain decompression data; transmitting the decompressed data to a target data channel, and determining the transmission priority of the decompressed data in the target data channel through the data content of the decompressed data and the acquisition terminal identification; and transmitting the decompressed data in the target data channel to the satellite through the antenna according to the transmission priority, so that the satellite transmits the received decompressed data to the data processing platform. The satellite communication terminal comprises a plurality of data channels, and after the data packets are decompressed to obtain decompressed data, the decompressed data are transmitted in parallel through the data channels, so that the data transmission efficiency of the satellite communication terminal can be improved on the basis of saving the cost of the satellite communication terminal.
Drawings
Fig. 1 is a communication control system diagram of a satellite communication terminal provided by the application;
fig. 2 is a flow chart of a communication control method of a satellite communication terminal provided by the application;
FIG. 3 is a block diagram of a satellite communication terminal provided by the present application;
fig. 4 is a schematic diagram of a computer device provided by the present application.
Detailed Description
In order to better understand the above technical solutions, the following detailed description of the technical solutions of the embodiments of the present application is made by using the accompanying drawings and the specific embodiments, and it should be understood that the specific features of the embodiments of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, and not limit the technical solutions of the present application, and the technical features of the embodiments of the present application may be combined with each other without conflict.
Referring to fig. 1, a communication control system of a satellite communication terminal according to an embodiment of the present application includes: satellite communication terminal 2, acquisition terminal 1, satellite 3 and data processing platform 4.
The satellite communication terminal 2 is configured to send a data acquisition request to the acquisition terminal 1;
the satellite communication terminal 2 and the acquisition terminal 1 are connected by adopting a serial port, data acquired by the acquisition terminal 1 are sent to the satellite communication terminal 2 according to a set protocol, and the satellite communication terminal 2 transmits the data to a satellite and then to a data processing platform.
The satellite communication terminal 2 may be mounted in a separate equipment box, or the equipment boxes of the acquisition terminal 1 may be shared. The position in which the satellite communication terminal 2 is placed in the equipment box needs to be specifically determined according to the equipment layout of the equipment box.
The acquisition terminal 1 is configured to send a data packet to the satellite communication terminal 2 after receiving the data request, where the data packet includes an acquisition terminal identifier, a data length, and a data body;
the acquisition terminal 1 has a 50 second reply time after receiving the data request, and transmits the data packet to the satellite communication terminal 2. I.e. byte by byte, to the satellite communication terminal, the interval between bytes sent does not exceed one second.
The data collected by the collection terminal 1 enter the data processing platform 4 through the satellite communication terminal 2 and the satellite 3. The user may access these data through an external service interface (REST interface) of the data processing platform 4. The user first obtains an interface access authorization code (license) before invoking the interface. The authorization code is used as one of the necessary parameters for each interface call for the data processing platform 4 to identify the identity of the requester and to control the range of data that is accessible.
The satellite communication terminal 2 is configured to determine a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, where the satellite communication terminal 2 includes a plurality of data channels, and different processes are adopted between the plurality of data channels to transmit data in parallel; the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point; transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data; transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority;
the satellite 3 is configured to send the received decompressed data to the data processing platform 4.
The embodiment of the application provides a communication control system of a satellite communication terminal, which is used for acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body; determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, and decompressing the data packet according to the decompression code by inquiring a decompression code corresponding to the acquisition terminal identifier and the time point for transmitting the data packet in a decompression data table to obtain decompression data; transmitting the decompressed data to a target data channel, and determining the transmission priority of the decompressed data in the target data channel through the data content of the decompressed data and the acquisition terminal identification; and transmitting the decompressed data in the target data channel to the satellite through the antenna according to the transmission priority, so that the satellite transmits the received decompressed data to the data processing platform. The satellite communication terminal comprises a plurality of data channels, and after the data packets are decompressed to obtain decompressed data, the decompressed data are transmitted in parallel through the data channels, so that the data transmission efficiency of the satellite communication terminal can be improved on the basis of saving the cost of the satellite communication terminal.
Referring to fig. 2, a communication control method of a satellite communication terminal according to an embodiment of the present application is applied to a satellite communication terminal, and includes: for performing step S201-step S205:
step S201, a data packet sent by an acquisition terminal is acquired.
The data packet comprises an acquisition terminal identifier, a data length and a data body, wherein the acquisition terminal identifier is used for uniquely identifying the corresponding acquisition terminal. The data length is used to represent the length of the data packet, and the data body is the data content in the data packet. Specifically, the data format of the data packet in this embodiment is a data header and a data body, where the data header includes information such as an acquisition terminal identifier, a data length, and an information header, and the data body is data that needs to be transmitted, and may be text, a picture, audio, or any other binary file, which is not specifically limited in this embodiment.
Step S202, determining a target data channel for transmitting the data packet according to the acquisition terminal identification and the data length.
The satellite communication terminal in this embodiment includes a plurality of data channels, and different processes are adopted among the plurality of data channels to send data in parallel, that is, after the satellite communication terminal receives a data packet sent by the acquisition terminal, the data channel corresponding to the data packet is determined, so that data corresponding to the data packet is sent according to the determined data channel in a subsequent step. In this embodiment, the received data packets are sent in parallel through the multiple data channels, so that the transmission efficiency of the data packets is improved.
In an optional embodiment of the present application, determining, according to the acquisition terminal identifier and the data length, a target data channel for transmitting the data packet includes:
step S2021, acquiring data channels corresponding to the acquisition terminal identifiers in the satellite communication terminal, where data sources corresponding to different acquisition terminal identifiers are different.
In the embodiment of the application, different acquisition terminal identifiers can correspond to a plurality of data channels, and the corresponding data channels are determined based on the data sources corresponding to the acquisition terminal identifiers. Specifically, the corresponding data channel is determined by the data source corresponding to the acquisition terminal identifier, the data source can be data in a plurality of industry fields such as power industry, traffic industry, emergency industry, livestock industry and the like, and then the data channel corresponding to the satellite communication terminal is acquired based on the data source. For example, the data channel corresponding to the data in the power industry is 1, the data channel corresponding to the data in the traffic industry is 2, and the data source corresponding to the acquisition terminal identifier is the power industry, and the acquired data channel corresponding to the satellite communication terminal is the data channel 1.
Step S2022, determining a target data channel for transmitting the data packet from the data channels corresponding to the acquisition terminal identifier.
If the number of data channels corresponding to the satellite communication terminal acquired in step S2021 is plural, a target data channel for transmitting the data packet is determined from the plural acquired data channels.
Specifically, if there are a plurality of data channels corresponding to the satellite communication terminal acquired in step S2021, determining the target data channel for transmitting the data packet from the data channels corresponding to the acquisition terminal identifier includes: determining a data channel with the maximum residual length from the data channels corresponding to the acquisition terminal identifiers; determining whether the length of the data channel with the maximum remaining length is greater than or equal to the data length; if the data channel with the maximum remaining length is larger than or equal to the target data channel, determining the data channel with the maximum remaining length as the target data channel; if the data packet is smaller than the target data channel, dividing the data packet into n sub-data packets, and selecting n data channels as the target data channels according to the residual lengths corresponding to the data channels corresponding to the acquisition terminal identifiers.
In this embodiment, if a data channel with a remaining length greater than the data length of the data packet exists in the corresponding data channel in the acquired satellite communication terminal, the data channel may be directly determined as the target data channel for transmitting the data packet; if no data channel with the residual length larger than the data length of the data packet exists in the corresponding data channel in the acquired satellite communication terminal, the data packet can be split into n sub-data packets, so that the corresponding n data channels in the acquired satellite communication terminal can jointly transmit the target data channels of the n sub-data packets.
Preferably, the dividing the data packet into n sub-data packets, selecting n data channels as the target data channels according to the remaining lengths corresponding to the data channels corresponding to the respective acquisition terminal identifiers, includes: selecting N data channels with the residual length larger than a preset value from N data channels corresponding to the acquisition terminal identification, wherein the preset value can be set according to actual requirements; dividing the data packet into n sub-data packets (the size of each sub-data packet can be set to be the same or different according to actual data transmission requirements), wherein the data length of each sub-data packet is smaller than or equal to the preset value; determining a target data channel corresponding to 1 sub-data packet from n data channels by the following formula:
and determining a target data channel corresponding to 1 remaining sub-data packet from the remaining n-1 data channels through the formula until all the sub-data packets determine the corresponding target data channel. Wherein D is i For the ith sub data packet, sequencing all the sub data packets from big to small, and then sequentially determining a target data channel corresponding to each sub data packet according to the sequencing relation, L j For the remaining length of the jth data channel, l i Is the data length of the ith sub-packet.
For example, the acquisition terminal identifier corresponds to 5 data channels, the number n of data channels with the remaining length larger than a preset value is selected from the 5 data channels corresponding to the acquisition terminal identifier to be 2, the data packet is divided into 2 sub-data packets, and then the data packet is divided into 2 sub-data packets according to the formula
And determining a target data channel corresponding to the 1 st sub-data packet (the data packet with the largest data length in the divided sub-data packet), if the residual length of the 1 st data channel is the smallest, determining the 1 st data channel as the target data channel of the 1 st sub-data packet, and determining the 2 nd data channel as the target data channel of the 2 nd sub-data packet.
And step 203, by inquiring a decompression password corresponding to the acquisition terminal identifier and the time point of sending the data packet in a decompression data table, decompressing the data packet according to the decompression password to obtain decompressed data.
In this embodiment, after determining the target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length in step S202, the decompression code corresponding to the time point for transmitting the data packet and the acquisition terminal identifier in the decompression data table is queried, so that the data packet is decompressed according to the decompression code to obtain the decompressed data. The decompression data table is provided with decompression passwords determined according to the identification of each acquisition terminal and the time point.
In an optional embodiment of the present application, the querying a decompression code in a decompression data table, which corresponds to the acquisition terminal identifier and a time point of sending a data packet, includes:
step S2031, adding the numbers in the time points of the data packet to obtain a time value; and converting the acquisition terminal identification into an identification value.
For example, if the time point of the data packet is 00:01:23, the time value is 6 by adding the numbers in the time point. If the acquisition terminal identifier is ID011, converting the ID011 into an identification numerical value, namely extracting a numerical value part in the acquisition terminal identifier, so that the obtained identification data is 011.
Step S2032, merging the time value and the identification value to obtain a target value.
Based on the above example, the time value 6 and the identification value 011 are combined to obtain a target value 6011.
Step S2033, determining a decompression password from the decompression data table according to the target value.
In this embodiment, the decompression data table stores the decompression passwords corresponding to different values, and after the target value is obtained, the decompression password corresponding to the target data can be obtained by querying the decompression data table.
In an optional embodiment provided by the application, a plurality of decompression passwords corresponding to the acquisition terminal identifiers are stored in the query decompression data table, and the decompression passwords of the data packet are determined from the plurality of decompression passwords corresponding to the acquisition terminal identifiers based on the target data. Specifically, the determining, according to the target value, a decompression password from the decompression data table includes: inquiring m decompression passwords corresponding to the acquisition terminal identification from the decompression data table; performing modulo remainder on the target value to obtain an intermediate value p; determining a p-th decompression code of the m decompression codes as the decompression code of the data packet based on the intermediate value p, wherein p epsilon
(1,m)。
For example, the acquisition terminal identifier corresponds to 5 (m) decompression passwords, and if the remainder obtained by dividing 6011 by 5 (i.e. dividing by m) is 1, the 1 st decompression password is determined as the decompression password of the data packet.
Step S204, transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data.
In this embodiment, if the data packet is not split into multiple sub-data packets, directly transmitting decompressed data obtained by decompressing the data packet to a corresponding target data channel, and then determining a transmission priority of the decompressed data in the target data channel by acquiring a terminal identifier and a data content of the decompressed data; if the data packet is split into a plurality of sub data packets, decompressed data obtained by decompressing the sub data packets are respectively transmitted to the target data channels corresponding to the sub data packets, and then the transmission priority of the sub data packets in the target data channels is determined. The transmission priority is used for indicating the transmission sequence of the decompressed data in the data channel, and the higher the transmission priority is, the more the transmission is prioritized.
In an optional embodiment of the present application, the determining, by the acquisition terminal identifier and the data content of the decompressed data, a transmission priority of the decompressed data in the target data channel includes:
step S2041, determining a terminal priority corresponding to the acquisition terminal identifier and an importance level corresponding to the data content of the decompressed data;
and step S2042, determining the transmission priority of the decompressed data in the target data channel according to the terminal priority and the importance level.
Specifically, the determining the transmission priority of the decompressed data in the target data channel according to the terminal priority and the importance level includes:
the transmission priority is calculated by the following formula:
Y＝αA+βB；
B＝ln(b1+b2)/2；
wherein Y is a transmission priority in the target data channel, α, β are constants, a is the terminal priority, B is the importance level, B1 is a data amount corresponding to the data content, and B2 is a data type corresponding to the data content.
Step S205, transmitting the decompressed data in the target data channel to the satellite through the antenna according to the transmission priority, so that the satellite transmits the received decompressed data to the data processing platform.
The data processing platform can be used for processing data in various industry fields. If the wild animal tracking is realized, various information such as animal positions and the like are collected through a tracking bracelet and are transmitted to a local monitoring station, position data are uniformly transmitted back to a data processing platform through SIOT equipment (satellite communication terminal and communication gateway equipment), and the information is displayed in a wild animal tracking system in a natural protection area.
The embodiment of the application provides a communication control method of a satellite communication terminal, which is used for acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body; determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, and decompressing the data packet according to the decompression code by inquiring a decompression code corresponding to the acquisition terminal identifier and the time point for transmitting the data packet in a decompression data table to obtain decompression data; transmitting the decompressed data to a target data channel, and determining the transmission priority of the decompressed data in the target data channel through the data content of the decompressed data and the acquisition terminal identification; and transmitting the decompressed data in the target data channel to the satellite through the antenna according to the transmission priority, so that the satellite transmits the received decompressed data to the data processing platform. The satellite communication terminal comprises a plurality of data channels, and after the data packets are decompressed to obtain decompressed data, the decompressed data are transmitted in parallel through the data channels, so that the data transmission efficiency of the satellite communication terminal can be improved on the basis of saving the cost of the satellite communication terminal.
In an alternative embodiment provided by the application, the application calculates the azimuth and elevation of the antenna from the north direction by the following formula:
wherein A is Z Azimuth angle of antenna and north direction, E L Is the elevation angle of the antenna, λ is the relative longitude, λ=λ earth- λstar, λstar is the satellite longitude, λ earth is the longitude of the location where the antenna is located,latitude of the place where the antenna is located;
and setting the antenna according to the azimuth angle and the elevation angle of the antenna and the north direction.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
In an embodiment, a satellite communication terminal is provided, which corresponds to the communication control method of the satellite communication terminal in the above embodiment one by one. As shown in fig. 3, the functional modules of the satellite communication terminal are described in detail as follows:
the acquiring module 31 is configured to acquire a data packet sent by the acquisition terminal, where the data packet includes an acquisition terminal identifier, a data length, and a data body;
the determining module 32 is configured to determine a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, where the satellite communication terminal includes a plurality of data channels, and different processes are adopted between the plurality of data channels to transmit data in parallel;
the decompression module 33 is configured to decompress the data packet according to a decompression password corresponding to the acquisition terminal identifier and a time point of sending the data packet in a decompression data table by querying the decompression password to obtain decompressed data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point;
a transmission module 34, configured to transmit the decompressed data to the target data channel;
the determining module 32 is further configured to determine, according to the acquisition terminal identifier and the data content of the decompressed data, a transmission priority of the decompressed data in the target data channel;
and the sending module 35 is configured to send the decompressed data in the target data channel to the satellite through the antenna according to the transmission priority, so that the satellite sends the received decompressed data to the data processing platform.
In an alternative embodiment provided by the present application, the satellite communication terminal further includes: the calculation module 36 is specifically configured to:
the azimuth and elevation of the antenna with the north direction are calculated by the following formula:
wherein A is Z Azimuth angle of antenna and north direction, E L For the elevation angle of the antenna, λ is the relative longitude, λ=λ Ground (floor) -λ Star shaped ，λ Star shaped For the longitude, lambda of the satellite Ground (floor) For the longitude of the location of the antenna,latitude of the place where the antenna is located;
and setting the antenna according to the azimuth angle and the elevation angle of the antenna and the north direction.
In an alternative embodiment provided by the present application, the determining module 32 is configured to:
acquiring data channels corresponding to the acquisition terminal identifiers in the satellite communication terminal, wherein the data sources corresponding to the different acquisition terminal identifiers are different;
and determining a target data channel for transmitting the data packet from the data channels corresponding to the acquisition terminal identifiers.
In an alternative embodiment provided by the present application, the determining module 32 is configured to:
determining a data channel with the maximum residual length from the data channels corresponding to the acquisition terminal identifiers;
determining whether the length of the data channel with the maximum remaining length is greater than or equal to the data length;
if the data channel with the maximum remaining length is larger than or equal to the target data channel, determining the data channel with the maximum remaining length as the target data channel;
if the data packet is smaller than the target data channel, dividing the data packet into n sub-data packets, and selecting n data channels as the target data channels according to the residual lengths corresponding to the data channels corresponding to the acquisition terminal identifiers.
In an alternative embodiment provided by the present application, the determining module 32 is configured to:
selecting N data channels with the residual length larger than a preset value from N data channels corresponding to the acquisition terminal identification;
dividing the data packet into n sub-data packets, wherein the data length of each sub-data packet is smaller than or equal to the preset value;
determining a target data channel corresponding to 1 sub-data packet from n data channels by the following formula:
determining a target data channel corresponding to 1 remaining sub-data packet from the remaining n-1 data channels through the formula until all the sub-data packets determine the corresponding target data channel;
wherein D is i For the ith sub-packet, L j For the remaining length of the jth data channel, l i Is the data length of the ith sub-packet.
In an alternative embodiment provided by the present application, the determining module 32 is configured to:
adding all the numbers in the time point of the data packet to obtain a time value; converting the acquisition terminal identification into an identification value;
combining the time value and the identification value to obtain a target value;
and determining a decompression password from the decompression data table according to the target value.
In an alternative embodiment provided by the present application, the determining module 32 is configured to:
inquiring m decompression passwords corresponding to the acquisition terminal identification from the decompression data table;
performing modulo remainder on the target value to obtain an intermediate value p;
and determining the p-th decompression code of the m decompression codes as the decompression code of the data packet based on the intermediate value p, wherein p epsilon (1, m).
In an alternative embodiment provided by the present application, the determining module 32 is configured to:
determining a terminal priority corresponding to the acquisition terminal identifier and an importance level corresponding to the data content of the decompressed data;
and determining the transmission priority of the decompressed data in the target data channel according to the terminal priority and the importance level.
In an alternative embodiment provided by the present application, the determining module 32 is configured to:
the transmission priority is calculated by the following formula:
Y＝αA+βB；
B＝ln(b1+b2)/2；
wherein Y is a transmission priority in the target data channel, α, β are constants, a is the terminal priority, B is the importance level, B1 is a data amount corresponding to the data content, and B2 is a data type corresponding to the data content.
The specific limitation regarding the satellite communication terminal may be referred to as limitation of the communication control method of the satellite communication terminal hereinabove, and will not be described herein. The various modules in the apparatus described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 4. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements a communication control method for a satellite communication terminal.
In one embodiment, a computer device is provided comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of when executing the computer program:
acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body;
determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, wherein the satellite communication terminal comprises a plurality of data channels, and the data channels are transmitted in parallel by adopting different processes;
the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point;
transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data;
and transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority, so that the satellite transmits the received decompressed data to a data processing platform.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body;
determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, wherein the satellite communication terminal comprises a plurality of data channels, and the data channels are transmitted in parallel by adopting different processes;
the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point;
transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data;
and transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority, so that the satellite transmits the received decompressed data to a data processing platform.
In one embodiment, a computer program product is provided, the computer program product comprising a computer program to be executed by a processor to perform the steps of:
acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body;
determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, wherein the satellite communication terminal comprises a plurality of data channels, and the data channels are transmitted in parallel by adopting different processes;
the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point;
transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data;
and transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority, so that the satellite transmits the received decompressed data to a data processing platform.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (6)
1. A communication control method of a satellite communication terminal, the method being applied to the satellite communication terminal, the method comprising:
acquiring a data packet sent by an acquisition terminal, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body;
determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, wherein the satellite communication terminal comprises a plurality of data channels, and the data channels are transmitted in parallel by adopting different processes;
the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point;
transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data;
transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority, so that the satellite transmits the received decompressed data to a data processing platform;
the determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length includes:
acquiring data channels corresponding to the acquisition terminal identifiers in the satellite communication terminal, wherein the data sources corresponding to the different acquisition terminal identifiers are different;
determining a target data channel for transmitting the data packet from the data channels corresponding to the acquisition terminal identifiers;
the determining a target data channel for transmitting the data packet from the data channels corresponding to the acquisition terminal identification comprises the following steps:
determining a data channel with the maximum residual length from the data channels corresponding to the acquisition terminal identifiers;
determining whether the length of the data channel with the maximum remaining length is greater than or equal to the data length;
if the data channel with the maximum remaining length is larger than or equal to the target data channel, determining the data channel with the maximum remaining length as the target data channel;
if the data packet is smaller than the target data channel, dividing the data packet into n sub-data packets, and selecting n data channels as the target data channels according to the residual lengths corresponding to the data channels corresponding to the acquisition terminal identifiers;
the determining the transmission priority of the decompressed data in the target data channel according to the acquisition terminal identifier and the data content of the decompressed data comprises the following steps:
determining a terminal priority corresponding to the acquisition terminal identifier and an importance level corresponding to the data content of the decompressed data;
determining the transmission priority of the decompressed data in the target data channel according to the terminal priority and the importance level;
the determining the transmission priority of the decompressed data in the target data channel according to the terminal priority and the importance level comprises the following steps:
the transmission priority is calculated by the following formula:
Y＝αA+βB；
B＝ln(b1+b2)/2；
wherein Y is a transmission priority in the target data channel, α, β are constants, a is the terminal priority, B is the importance level, B1 is a data amount corresponding to the data content, and B2 is a data type corresponding to the data content.
2. The method according to claim 1, wherein the method further comprises:
the azimuth and elevation of the antenna with the north direction are calculated by the following formula:
wherein A is Z Azimuth angle of antenna and north direction, E L For the elevation angle of the antenna, λ is the relative longitude, λ=λ Ground (floor) -λ Star shaped ，λ Star shaped For the longitude, lambda of the satellite Ground (floor) For the longitude of the location of the antenna,latitude of the place where the antenna is located;
and setting the antenna according to the azimuth angle and the elevation angle of the antenna and the north direction.
3. The method according to claim 2, wherein dividing the data packet into n sub-data packets, selecting n data channels as the target data channels according to the remaining lengths corresponding to the data channels corresponding to the respective acquisition terminal identifications, includes: selecting N data channels with the residual length larger than a preset value from N data channels corresponding to the acquisition terminal identification;
dividing the data packet into n sub-data packets, wherein the data length of each sub-data packet is smaller than or equal to the preset value;
determining a target data channel corresponding to 1 sub-data packet from n data channels by the following formula:
determining a target data channel corresponding to 1 remaining sub-data packet from the remaining n-1 data channels through the formula until all the sub-data packets determine the corresponding target data channel;
wherein D is i For the ith sub-packet, L j For the remaining length of the jth data channel, l i Is the data length of the ith sub-packet.
4. The method according to claim 1, wherein the step of querying the decompression data table for the decompression password corresponding to the acquisition terminal identifier and the time point of transmitting the data packet includes:
adding all the numbers in the time point of the data packet to obtain a time value; converting the acquisition terminal identification into an identification value;
combining the time value and the identification value to obtain a target value;
and determining a decompression password from the decompression data table according to the target value.
5. The method of claim 4, wherein said determining a decompression code from said decompression data table based on said target value comprises:
inquiring m decompression passwords corresponding to the acquisition terminal identification from the decompression data table; performing modulo remainder on the target value to obtain an intermediate value p;
and determining the p-th decompression code of the m decompression codes as the decompression code of the data packet based on the intermediate value p, wherein p epsilon (1, m).
6. A communication control system of a satellite communication terminal based on the method according to any one of claims 1-5, characterized in that the system comprises: the system comprises a satellite communication terminal, an acquisition terminal, a satellite and a data processing platform;
the satellite communication terminal is used for sending a data acquisition request to the acquisition terminal;
the acquisition terminal is used for sending a data packet to the satellite communication terminal after receiving the data acquisition request, wherein the data packet comprises an acquisition terminal identifier, a data length and a data body; the satellite communication terminal is used for determining a target data channel for transmitting the data packet according to the acquisition terminal identifier and the data length, and comprises a plurality of data channels, wherein different processes are adopted among the data channels for transmitting data in parallel; the data package is decompressed according to the decompression password by inquiring the decompression password corresponding to the acquisition terminal identifier and the time point of sending the data package in a decompression data table, so as to obtain decompression data; the decompression data table stores decompression passwords determined according to the identification of each acquisition terminal and the time point; transmitting the decompressed data to the target data channel, and determining the transmission priority of the decompressed data in the target data channel through the acquisition terminal identification and the data content of the decompressed data; transmitting the decompressed data in the target data channel to a satellite through an antenna according to the transmission priority;
the satellite is used for sending the received decompressed data to the data processing platform.
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