CN108337037A - Satellite channel sharing method suitable for small data quantity, non-real-time service - Google Patents
Satellite channel sharing method suitable for small data quantity, non-real-time service Download PDFInfo
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- CN108337037A CN108337037A CN201810142776.5A CN201810142776A CN108337037A CN 108337037 A CN108337037 A CN 108337037A CN 201810142776 A CN201810142776 A CN 201810142776A CN 108337037 A CN108337037 A CN 108337037A
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- data
- communication terminal
- network control
- satellite communication
- control center
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Classifications
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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
- H04B7/18519—Operations control, administration or maintenance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of satellite channel sharing methods suitable for small data quantity, non-real-time service, network control center handles the data transfer request of all satellite communication terminals in system, store the business datum that simultaneously repeater satellite communication terminal is sent, process flow includes two independent cyclic processes, is that data receiver cycle and data send cycle respectively.The present invention reduces the expenses that control protocol in business datum transmission process interacts, and improve satellite bandwidth utilization rate, and eliminating communicating pair must be simultaneously in the limitation of net, the convenience that the system of improving uses.
Description
Technical field
The invention belongs to technical field of satellite communication, specifically a kind of FDMA suitable for small data quantity, non-real-time service is defended
The channel sharing method of star communication system.
Background technology
Communication technology of satellite is a kind of important wireless communication means, has wide coverage, communications cost and apart from nothing
The advantages that closing, being seamlessly connected convenient for the whole world, suffers from various fields such as military affairs, ocean, aviation, rescue and relief works and widely answers
With.Satellite communication system is made of satellite communication terminal and network control center software, and satellite communication terminal is in network control center software
Management control lower realize the satellite communications services such as speech, video, data.FDMA satellite communication systems be typically a kind of bandwidth by
Limit system, all satellite communication terminals share limited satellite bandwidth resource in system, due to satellite bandwidth is rare, price compared with
How height efficiently uses satellite bandwidth resource and is of great significance for FDMA satellite communication systems.
In typical FDMA satellite communication systems, when a pair of satellite communication terminal is communicated, calling party needs
Communication application is initiated to network control center, called state is detected in network control center with called interaction, if be called in net, for
Calling and called distribute satellite channel, and calling and called use the satellite channel of distribution to carry out service communication after carrying out continuity test.If
It is called not in net, then refuses the call request of caller.After a pair of satellite communication terminal enters communications status, their exclusive network controls
The satellite channel of center distribution, when there is new satellite communication terminal to be communicated, network control center is in remaining satellite bandwidth
Channel is distributed in resource, if not enough bandwidth are available, refuses communication request.For the real-time Communication for Power industry of big data quantity
Business, this channel sharing method can preferably utilize limited satellite bandwidth resource.But for the non real-time of small data quantity
Business, communicating pair, which still will first carry out complicated interaction, can establish satellite channel, just discharge channel after of short duration use, lead
Cause the utilization rate of satellite bandwidth resource low.In addition, this method also require communicating pair must simultaneously in net, otherwise data just without
Method is sent.It can be seen that for the non-real-time service of small data quantity, traditional channel sharing method is unable to fully utilize satellite band
Wide resource increases the use cost of satellite communication system indirectly, it is desirable that communicating pair also reduces system in net simultaneously and uses
Convenience.
Invention content
The purpose of the present invention is to provide a kind of, and suitable for data volume, smaller, non-real-time service satellite channel is shared square
Method carries out storage forwarding to business datum by network control center, reduces the expense of business datum transmission process, eliminate communicating pair
It must be simultaneously in the limitation of net, the convenience that utilization rate and system to improve satellite bandwidth use.
Realize that the technical solution of the object of the invention is：Network control center is the management control in FDMA satellite communication systems
Center is interacted by control channel between the satellite communication terminal and network control center in system.Satellite communication terminal passes through
Back control channel sends communication application signaling to network control center, and network control center is sent control signaling by forward control channel.
Satellite communication terminal is denoted as T, network control center is denoted as NCC.
Satellite communication terminal is denoted as S1 to the process of network control center transmission data, and steps are as follows：
（1）T transmits demand signalling to NCC transmission datas；
（2）NCC sends channel distribution signaling to T；
（3）T sends channel distribution response signaling to NCC；
（4）T uses the channel transmission data of NCC distribution；
（5）NCC receives and stores the data of T transmissions；
（6）T transmission data end of transmission signalings；
（7）NCC sends end of transmission response signaling and discharges satellite channel.
Network control center is denoted as S2 to the process of satellite communication terminal transmission data, and steps are as follows：
（1）NCC sends channel distribution signaling to T；
（2）T sends channel distribution response signaling to NCC；
（3）NCC sends the data of storage using the channel of distribution to T；
（4）NCC transmission data end of transmission signalings simultaneously discharge satellite channel；
（5）T sends end of transmission response signaling.
Network control center handles the data transfer request of all satellite communication terminals in system, stores simultaneously repeater satellite
The business datum that communication terminal is sent.Process flow includes two independent cyclic processes, is data receiver cycle sum number respectively
It is recycled according to sending.
The data transfer request of the network control center data receiver cycle satellite communication terminal to be received such as always, once it receives
The data transfer request of satellite communication terminal then presses process S1 and receives data, and the business datum received is put into queue Q.
Network control center data send cycle and inspect periodically queue Q, data are taken out from Q if queue not empty, if connect
Debit is in net, then implementation procedure S2, sends the data to recipient, if data are put back to rear of queue by recipient not in net
Portion.
Compared with prior art, the present invention its remarkable advantage：The present invention reduces association is controlled in business datum transmission process
The expense for discussing interaction, improves satellite bandwidth utilization rate, and system must be improved simultaneously in the limitation of net by eliminating communicating pair
The convenience used.
Description of the drawings
Attached drawing is the business processing flow figure of network control center of the present invention.
Specific implementation mode
The present invention is suitable for small data quantity, the satellite channel sharing method of non-real-time service needs the satellite communication in system
Cooperation can be realized jointly for terminal and network control center.Describe separately below satellite communication terminal to network control center transmission data,
Implementation steps of the network control center to satellite communication terminal transmission data and network control center storage forwarding data.
（One）Satellite communication terminal is to network control center transmission data
When satellite communication terminal has business datum to need to send, actively data transmission request, network control center are initiated to network control center
Carry out data transmission after distributing satellite channel for it.Detailed process is as follows：
（1）Satellite communication terminal transmits application signaling to network control center transmission data, and signaling format is as follows：
| Signalling length |
| Signaling type（Data transmission request） |
| Sender ID |
| Recipient ID |
Wherein, Signalling length is the byte number of entire signaling, and signaling type specifies the function of signaling, and sender ID is to need to send out
It is the unique mark for the satellite communication terminal for receiving data to send the unique mark of the satellite communication terminal of data, recipient ID.
（2）Network control center sends channel distribution signaling to satellite communication terminal, and signaling format is as follows：
| Signalling length |
| Signaling type（Channel distribution） |
| Satellite communication terminal ID |
| Signaling serial number |
| Transmission frequency initial value |
| Transmission frequency stop value |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for receiving this signaling, and signaling serial number is signaling
Unique mark, transmission frequency initial value and transmission frequency stop value specify the transmission channel of satellite communication terminal.
（3）Satellite communication terminal sends channel distribution response signaling to network control center, and signaling format is as follows：
| Signalling length |
| Signaling type（Channel distribution response） |
| Satellite communication terminal ID |
| Signaling serial number |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for sending the signaling, and signaling serial number must be the same as letter
Serial number in road assignment signalling is the same.
（4）Satellite communication terminal uses the channel transmission data that network control center is distributed, signaling format as follows：
| Signalling length |
| Signaling type（Data transmission） |
| Satellite communication terminal ID |
| Signaling serial number |
| Data type |
| Data |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for sending the signaling, and signaling serial number is signaling
Unique mark, data type specification data are text, picture or video, and data field is the business that satellite communication terminal is sent
Data.
According to the size of data, satellite communication terminal can disposably send all business datums, can also use fragment
The mode of transmission is sent several times.
（5）Network control center receives and stores the data of satellite communication terminal transmission, and after receiving data, network control center is to satellite
The transmission of communication terminal transmission data confirms that signaling, format are as follows：
| Signalling length |
| Signaling type（Data transmission confirms） |
| Satellite communication terminal ID |
| Signaling serial number |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for receiving the signaling, and signaling serial number must same net
Signaling serial number in the data transmission signaling that control center receives is identical.
（6）Satellite communication terminal sends end of transmission signaling to network control center, and signaling format is as follows：
| Signalling length |
| Signaling type（The end of transmission） |
| Satellite communication terminal ID |
| Signaling serial number |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for sending the signaling, and signaling serial number is signaling
Unique mark.
（7）Network control center sends the end of transmission and confirms signaling, while discharging allocated satellite channel, and signaling format is such as
Under：
| Signalling length |
| Signaling type（The end of transmission confirms） |
| Satellite communication terminal ID |
| Signaling serial number |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for receiving the signaling, and signaling serial number must same net
Signaling serial number in the end of transmission signaling that control center receives is identical.
（Two）Network control center is to satellite communication terminal transmission data
The process that the business datum of storage is sent to recipient's satellite communication terminal by network control center is as follows：
（1）Network control center sends channel distribution signaling to satellite communication terminal, and signaling format is as follows：
| Signalling length |
| Signaling type（Channel distribution） |
| Satellite communication terminal ID |
| Signaling serial number |
| Transmission frequency initial value |
| Transmission frequency stop value |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for receiving this signaling, and signaling serial number is signaling
Unique mark, transmission frequency initial value and transmission frequency stop value specify the transmission channel of satellite communication terminal.
（2）Satellite communication terminal sends channel distribution response signaling to network control center, and signaling format is as follows：
| Signalling length |
| Signaling type（Channel distribution response） |
| Satellite communication terminal ID |
| Signaling serial number |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for sending the signaling, and signaling serial number must be the same as letter
Serial number in road assignment signalling is the same.
（3）Network control center sends the data of storage using the channel of distribution to satellite communication terminal, and signaling format is as follows：
| Signalling length |
| Signaling type（Data transmission） |
| Satellite communication terminal ID |
| Signaling serial number |
| Data type |
| Data |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for sending the signaling, and signaling serial number is signaling
Unique mark, data type specification data are text, picture or video, and data field is the business number that network control center is sent
According to.
According to the length of data, network control center can disposably send all business datums, fragment can also be used to send
Mode send several times.
（4）Network control center sends end of transmission signaling, while discharging allocated satellite channel, and signaling format is as follows：
| Signalling length |
| Signaling type（The end of transmission） |
| Satellite communication terminal ID |
| Signaling serial number |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for receiving the signaling.
（5）Satellite communication terminal sends the end of transmission and confirms that signaling, signaling format are as follows：
| Signalling length |
| Signaling type（The end of transmission confirms） |
| Satellite communication terminal ID |
| Signaling serial number |
Wherein, satellite communication terminal ID is the unique mark for the satellite communication terminal for receiving the signaling, and signaling serial number same must connect
Signaling serial number in the end of transmission signaling received is identical.
（Three）Network control center control flow
Network control center runs two threads, is respectively used to send and receive business datum, receiving thread uninterruptedly receives to defend oneself
The business datum of star communication terminal, and be deposited into and send and receive the shared queue of thread.It is shared to send thread loops inquiry
Whether there is business datum in queue, read out once there are data, being sent to recipient if recipient is in net defends
Otherwise star communication terminal is reentered into the tail of the queue of shared queue.The process that network control center receives data is exactly satellite communication terminal
To the process of network control center transmission data, specific steps are as previously described.The process of network control center transmission data also has in detail above
Thin description.Network control center is only described below to receiving the process flows of data, is sended and received thread and is passed by shared queue
Delivery data needs the mutual exclusion that cross-thread is realized by way of locking and unlocking due to being multi-thread access shared data structure
Operation.
The satellite communication terminal of transmission data is denoted as T1, the satellite communication terminal for receiving data is denoted as T2, network control center
Business processing flow it is as shown in the picture.
For the service strategy for realizing different, different types of queue Q storage service data may be used in network control center.Generally
Situation can use fifo queue, realize fair First Come First Served.Can also use priority queue, to part satellite
Communication terminal carries out priority support.
Receiving thread：
（1）Business datum is read, if there is new business datum then turns（2）, otherwise continue to execute（1）；
（2）Shared queue is locked；
（2）Business datum is stored in shared queue；
（3）Shared queue is unlocked；
（4）Turn（1）.
Send thread：
（1）Shared queue is locked；
（2）Check in shared queue whether there are data, if turning without if（6）；
（3）Data are read from shared queue；
（4）Turn after being sent to data if recipient is in net（6）；
（5）Place data into shared queue tail portion；
（6）Shared queue is unlocked；
（7）Turn（1）.
In conclusion the satellite channel sharing method suitable for small data quantity, non-real-time service uses network control center to business
Data carry out storage forwarding, reduce the expense that control protocol interacts in business datum transmission process, eliminating communicating pair must
It must be simultaneously in the limitation of net, to achieve the purpose that improve satellite bandwidth utilization rate, improve system ease of use.
Claims (5)
1. a kind of satellite channel sharing method suitable for small data quantity, non-real-time service, it is characterised in that：Network control center is to system
The data transfer request of interior all satellite communication terminals is handled, and the business number that simultaneously repeater satellite communication terminal is sent is stored
According to process flow includes two independent cyclic processes, is that data receiver cycle and data send cycle respectively.
2. satellite channel sharing method according to claim 1, it is characterised in that：The network control center data receiver cycle
The data transfer request of satellite communication terminal to be received such as always, once the data transfer request of satellite communication terminal is received,
It then presses satellite communication terminal and receives data to the process S1 of network control center transmission data, and the business datum received is put into team
Arrange Q.
3. satellite channel sharing method according to claim 1, it is characterised in that：The network control center data send cycle
Queue Q is inspected periodically, takes out data from Q if queue not empty, if recipient executes network control center to satellite in net
The process S2 of communication terminal transmission data, sends the data to recipient, if data are put back to queue by recipient not in net
Tail portion.
4. satellite channel sharing method according to claim 2, it is characterised in that：The satellite communication terminal is into network control
The process S1 of the heart transmission data when satellite communication terminal has business datum to need to send, actively initiates data to network control center and passes
Defeated application, network control center are as follows to carry out data transmission after its distribution satellite channel：
（1）Satellite communication terminal transmits demand signalling to network control center transmission data；
（2）Network control center sends channel distribution signaling to satellite communication terminal；
（3）Satellite communication terminal sends channel distribution response signaling to network control center；
（4）Satellite communication terminal uses the channel transmission data that network control center is distributed；
（5）Network control center receives and stores the data of satellite communication terminal transmission, and after receiving data, network control center is to satellite communication
The transmission of terminal transmission data confirms signaling；
（6）Satellite communication terminal is to network control center transmission data end of transmission signaling；
（7）Network control center sends end of transmission response signaling and discharges satellite channel.
5. satellite channel sharing method according to claim 3, it is characterised in that：The network control center is whole to satellite communication
The process S2 of transmission data is held, steps are as follows：
（1）Network control center sends channel distribution signaling to satellite communication terminal；
（2）Satellite communication terminal sends channel distribution response signaling to network control center；
（3）Network control center sends the data of storage using the channel of distribution to satellite communication terminal；
（4）Network control center transmission data end of transmission signaling simultaneously discharges satellite channel；
（5）Satellite communication terminal sends end of transmission response signaling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142776.5A CN108337037A (en) | 2018-02-11 | 2018-02-11 | Satellite channel sharing method suitable for small data quantity, non-real-time service |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142776.5A CN108337037A (en) | 2018-02-11 | 2018-02-11 | Satellite channel sharing method suitable for small data quantity, non-real-time service |
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| Publication Number | Publication Date |
|---|---|
| CN108337037A true CN108337037A (en) | 2018-07-27 |
Family
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|---|---|---|---|
| CN201810142776.5A Pending CN108337037A (en) | 2018-02-11 | 2018-02-11 | Satellite channel sharing method suitable for small data quantity, non-real-time service |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639337A (en) * | 2018-11-23 | 2019-04-16 | 南京控维通信科技有限公司 | Graphical auxiliary suitable for satellite communication equipment is to star method |
| CN118678403A (en) * | 2024-08-23 | 2024-09-20 | 荣耀终端有限公司 | Communication method, communication device, communication system and storage medium |
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| CN118678403A (en) * | 2024-08-23 | 2024-09-20 | 荣耀终端有限公司 | Communication method, communication device, communication system and storage medium |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Wenfang Inventor after: Li Jiaying Inventor after: Lai Haiguang Inventor before: Zhang Wenfang Inventor before: Lai Haiguang Inventor before: Li Jiaying |
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Application publication date: 20180727 |