CN107306149A - A kind of air communications method and system - Google Patents
A kind of air communications method and system Download PDFInfo
- Publication number
- CN107306149A CN107306149A CN201610245077.4A CN201610245077A CN107306149A CN 107306149 A CN107306149 A CN 107306149A CN 201610245077 A CN201610245077 A CN 201610245077A CN 107306149 A CN107306149 A CN 107306149A
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- base station
- airborne vehicle
- ground base
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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
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
-
- 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
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
Abstract
The invention discloses a kind of air communications method and system, aviation communication system is set up the radio honeycomb shape seamless coverage to spatial domain by one or more ground 4G and its evolution technology wireless base station (hereinafter referred to as wireless base station), the embodiment of the present invention is modified to ground 4G and its evolution technology mobile communication air interface protocol, makes it to be adapted to the airborne vehicle of aerial high-speed flight；Also, airborne vehicle flies in the spatial domain that this aviation communication system is covered, contained receiver can carry out signal reception and transmitting with the ground 4G and its evolution technology wireless base station of this air line, set up connection, carry out high speed data transfer.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of air communications method and system.
Background technology
With the fast development of aeronautical technology and the communication technology, airborne vehicle can carry various terminals, and the end
End can be communicated during aircraft with ground base station.
At present, communication process between airborne vehicle and ground base station, it usually needs realized by satellite.By defending
When star realizes the communication between airborne vehicle and ground base station, because the available bandwidth of satellite is smaller, therefore,
There is the problem of data transmission bauds is slow when being communicated between airborne vehicle and ground base station；Also, by defending
Star realizes the communication between airborne vehicle and ground base station, also there is the problem of communication cost is high.
Based on above mentioned problem, it is that the terminal that will be carried on airborne vehicle is directly accessed ground base station to have a kind of scheme,
But under existing communication agreement, airborne vehicle and ground base station it is in larger distance when, the signal transmission delay existed
Problem, will cause to need between airborne vehicle and ground base station constantly to retransmit data, it is more serious in the case of, boat
Pocket will be unable to be communicated between ground base station, therefore, and current ground base station can not also solve aviation
The problem of device is communicated by ground base station.
As can be seen here, at present in airborne vehicle in flight course, the terminal presence in the airborne vehicle can not pass through
The problem of ground base station is communicated.
The content of the invention
The embodiment of the present invention provides a kind of air communications method and system, with solution at present in airborne vehicle in flight
During, there is the problem of impenetrably face base station is communicated in the terminal in the airborne vehicle existed.
Concrete technical scheme provided in an embodiment of the present invention is as follows：
First aspect is there is provided a kind of air communications method, and applied in aviation communication system, the aviation is led to
Letter system includes airborne vehicle, and at least one ground base station exists between the airborne vehicle and the ground base station
Communication connection, and there is overlapping region between the overlay area of two neighboring ground base station institute transmission signal, institute
The method of stating includes：When the airborne vehicle first transmission communication data, by the corresponding control of the communication data
Information UCI transmission is to ground base station；And the communication data packages processing；In mixed automatic retransfer
Ask in HARQ procedure, the communication data after the airborne vehicle handles group bag is sent to the ground base
Stand, notify the ground base station to receive the communication data after described group of bag processing according to the UCI；Wherein,
The maximum retransmission of the HARQ is at least five times.
With reference in a first aspect, in the first possible implementation, the airborne vehicle also includes at least one
Radio-frequency antenna and wireless communication terminal, the radio-frequency antenna exists with the wireless communication terminal to be communicated to connect,
The wireless communication terminal is communicated by the radio-frequency antenna with the ground base station；Wherein, it is described to penetrate
Frequency antenna is vertical polarized antenna or omnidirectional antenna, when the radio-frequency antenna is vertical polarized antenna, institute
It is the directional aerial that wave beam broadband is preset range to state vertical polarized antenna.
With reference in a first aspect, or first aspect the first possible implementation, in second of possible reality
In existing mode, methods described also includes：In the HARQ procedure, at the airborne vehicle re-transmission group bag
Version number's order of communication data after reason is followed successively by version 0, version 0, version 2, version 3, version 1.
Second aspect is there is provided a kind of air communications method, and applied in aviation communication system, the aviation is led to
Letter system includes airborne vehicle, and at least one ground base station exists between the airborne vehicle and the ground base station
Communication connection, and there is overlapping region between the overlay area of two neighboring ground base station institute transmission signal, institute
The method of stating includes：The ground base station is initially received the packet that the airborne vehicle is sent, if to the number
It is demodulated according to bag after processing, the communication data that the airborne vehicle is sent is not obtained, then from first time data weight
Spread the beginning, the ground base station carries out hybrid automatic repeat-request HARQ merging treatments；Wherein, it is described
HARQ maximum retransmission is at least five times, and the packet comprises at least control information UCI；It is described
Ground base station receives the communication data that the airborne vehicle is retransmitted according to the UCI.
With reference to second aspect, in the first possible implementation, methods described also includes：Described
In HARQ procedure, the ground base station receive version number's order of the communication data that the airborne vehicle is retransmitted according to
Secondary is version 0, version 0, version 2, version 3, version 1.
There is provided a kind of aviation communication system, including airborne vehicle, at least one ground base station, institute for the third aspect
State and there is communication connection between airborne vehicle and the ground base station, and two neighboring ground base station institute transmission signal
Overlay area between there is overlapping region, wherein：Airborne vehicle, for leading to when the airborne vehicle first transmission
During letter data, by the corresponding control information UCI transmission of the communication data to ground base station；And will be described logical
Letter data packages processing；In hybrid automatic repeat-request HARQ procedure, the airborne vehicle is by group
Communication data after bag processing is sent to the ground base station；Wherein, the maximum re-transmission time of the HARQ
Number is at least five times；The ground base station, for receiving the communication after described group of bag processing according to the UCI
Data.
With reference to the third aspect, in the first possible implementation, the airborne vehicle also includes at least one
Radio-frequency antenna and wireless communication terminal, the radio-frequency antenna exists with the wireless communication terminal to be communicated to connect,
The wireless communication terminal is communicated by the radio-frequency antenna with the ground base station；Wherein, it is described to penetrate
Frequency antenna is vertical polarized antenna or omnidirectional antenna, when the radio-frequency antenna is vertical polarized antenna, institute
It is the directional aerial that wave beam broadband is preset range to state vertical polarized antenna.
With reference to the third aspect, the first possible implementation, described in second of possible implementation
Radio-frequency antenna is located on the belly of the airborne vehicle or top；Or, the radio-frequency antenna is located at the aviation
The left side or right side of device；Or, the radio-frequency antenna is separately mounted to belly and the top of the airborne vehicle.
With reference to the third aspect, the first possible implementation of the third aspect, or second of the third aspect can
The implementation of energy, in the third possible implementation, in the HARQ procedure, the boat
Version number's order of communication data after the processing of pocket re-transmission group bag is followed successively by version 0, version 0, version 2,
Version 3, version 1.
In the embodiment of the present invention there is provided it is a kind of to airborne vehicle provide continuous signal covering with 4G and its evolution
Wireless broadband network system based on the mobile cellular network technology of technology ground, the aviation communication system is by one
Or the nothing to spatial domain is set up in multiple ground 4G and its evolution technology wireless base station (hereinafter referred to as wireless base station)
The cellular seamless coverage of line, the embodiment of the present invention connects to ground 4G and its aerial of evolution technology mobile communication
Mouth agreement is modified, and makes it to be adapted to the airborne vehicle of aerial high-speed flight；Also, airborne vehicle is in this boat
Flight in the spatial domain of empty communication system covering, contained receiver can with the ground 4G of this air line and
Its evolution technology wireless base station carries out signal reception and transmitting, sets up connection, carries out high speed data transfer.
Brief description of the drawings
Fig. 1 is aviation communication system architecture schematic diagram in the embodiment of the present invention one；
Fig. 2 is aviation communication flow diagram in the embodiment of the present invention two；
Fig. 3 and Fig. 4 is aviation communication system transmitting uplink data timing diagram in the embodiment of the present invention two；
Fig. 5 and Fig. 6 is aviation communication system downlink data transmission timing diagram in the embodiment of the present invention two.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment one
As shown in fig.1, being aviation communication system architecture schematic diagram, the air communications in the embodiment of the present invention
System include airborne vehicle 10, at least one ground base station 11, wherein：
There is communication connection, and two neighboring ground base between the airborne vehicle 10 and the ground base station 11
There is overlapping region between the overlay area for 11 transmission signals of standing, wherein：
Airborne vehicle 10, for when the 10 first transmission communication data of airborne vehicle, by the communication data
Corresponding control information (UCI) is transmitted to ground base station；And the communication data packages processing；
During hybrid automatic repeat-request (HARQ), the airborne vehicle group bag is handled after communication data
Send to the ground base station；Wherein, the maximum retransmission of the HARQ is at least five times；
The ground base station 11, for receiving the communication data after described group of bag processing according to the UCI.
Further, the airborne vehicle 10 also includes at least one radio-frequency antenna and wireless communication terminal, institute
State radio-frequency antenna and there is communication connection with the wireless communication terminal, the wireless communication terminal is penetrated by described
Frequency antenna is communicated with the ground base station 11；Wherein, the radio-frequency antenna be vertical polarized antenna or
Person's omnidirectional antenna, when the radio-frequency antenna is vertical polarized antenna, the vertical polarized antenna is that wave beam is wide
Band is the directional aerial of preset range.
Optionally, it is attached between the radio-frequency antenna and the wireless communication terminal by wired mode.
Optionally, the radio-frequency antenna is located on the belly of the airborne vehicle or top；Or, the radio frequency
Antenna is located at the left side or right side of the airborne vehicle；Or, the radio-frequency antenna is separately mounted to the aviation
The belly of device and top.
Further, in the HARQ procedure, the communication number after the airborne vehicle re-transmission group bag processing
According to version number order be followed successively by version 0, version 0, version 2, version 3, version 1.
Optionally, the aviation communication system described in the embodiment of the present invention is applied to FDD (Freq airborne vehicles ncy
Division Duplexing；FDD) LTE (Long Term Evolution；Long Term Evolution) application
Scene.
Embodiment two
Based on the aviation communication system described in above-described embodiment one, as shown in fig.2, the air communications system
The data transmission procedure of system includes：
Step 200：When the airborne vehicle first transmission communication data, by the corresponding control of the communication data
Information UCI transmission processed packages processing to ground base station, and by the communication data.
In the embodiment of the present invention, before airborne vehicle and ground base station carry out data re-transmission, should also will described in
Airborne vehicle and the ground base station are synchronized.
Step 210：In hybrid automatic repeat-request HARQ procedure, after the airborne vehicle handles group bag
Communication data send to the ground base station；Wherein, the maximum retransmission of the HARQ is at least
Five times.
In the embodiment of the present invention, for FDD LTE systems, ascending HARQ is synchronous mode, HARQ
It is 8 to enter number of passes.As shown in fig.3, being normal HARQ timing diagrams (TX figures) in the prior art, boat
Pocket is after synchronization, sequential and ground base station Complete Synchronization.In some HARQ process, ground
Expect to receive the up of airborne vehicle transmission in subframe 4 after subframe 0 issues DCI0 to airborne vehicle in face base station
Data, ground base station demodulation after subframe 8 feed back the upstream data A/N results to airborne vehicle, if ground
The result of face base station feedback is NACK, and airborne vehicle needs to retransmit in 12 pairs of uplink data blocks of subframe.
In this process, when every time pass at the beginning of data, MAC (Media Access Control；Media interviews
Control) layer needs to package operation to sending data, time-consuming longer, received from airborne vehicle under ground base station
The DCI0 of hair is to completion group bag, and sending upstream data at least needs 3 milliseconds.And in each retransmit, because
Bag need not be organized again for upstream data, it is only necessary to chosen different re-transmission versions and be can be transmitted, processing time can
To shorten to 2 milliseconds.When cell coverage area is 200 km, in the cell edge, airborne vehicle and ground
The path delay of time between the base station of face corresponding to data transfer can reach 1.34 milliseconds, and airborne vehicle needs in advance 1.3
Millisecond sends upstream data, due to airborne vehicle carry out required for data package-restructuring when a length of 3 milliseconds, and navigate
A length of 1.34 milliseconds when the packet after recombinating is transmitted the transmission to required for ground base station by pocket, restructuring
Duration is more than 4 milliseconds with transmission duration sum, and airborne vehicle will be unable to send out the packet after restructuring in subframe 4
Ground base station is delivered to, therefore when being passed at the beginning of data, MPS process area is excessive, by beyond the processing of airborne vehicle
Ability, and retransmitting then has no problem.
Based on above-mentioned technical problem, as shown in fig.4, (being less than and setting when base station is nearer from the ground for airborne vehicle
Definite value, such as 100 kms), at the beginning of airborne vehicle carries out data according to the normal HARQ processing sequential shown in Fig. 2
Pass and retransmission process；When airborne vehicle is away from ground base station (being more than setting value), airborne vehicle is just being passed every time
When, real upstream data is not transmitted, and simply UCI information transfers to ground base station, ground base station
Sequential is handled according to normal HARQ, when subframe 8 does not receive the first biography data of airborne vehicle, NACK is replied
To airborne vehicle, and start retransmission procedure；When retransmitting, airborne vehicle has sufficient time to complete upstream data
Send, airborne vehicle and base station are all completed to merge and retransmitted by normal HARQ processing sequential.For not shadow
The demodulation performance of base station side is rung, maximum retransmission is increased to 5 times for 4 times as specified in existing protocol.
Further, in above-mentioned five retransmission processes, retransmit version number's order and changed by (0,2,3,1)
Into (0,0,2,3,1)；For ground base station, if after first transmission demodulation, ground base station return value
The result of airborne vehicle is NACK, then ground base station carries out HARQ merging since retransmitting first time.
In addition, ground base station is to MCS (Mymova Checkin System；Modulation and coding strategy) and RB
(Resource Block；Resource block) etc. resource scheduling, do not pass BLER(block error rate) (BLER) referring again to first,
In the case of first transmission mistake, the BLER retransmitted with reference to first time.
It is similar with ascending HARQ problem, to support the radius of society of 200 kms, descending HARQ procedure
Need also exist for transformation.As shown in figure 5, normal descending HARQ procedure is assumed in FDD LTE systems
It is also synchronous mode, there are 8 HARQ processes, the RTT length of each HARQ processes is 8 subframes
(subframe is 1ms), i.e. ground base station send downlink data in subframe 0, and airborne vehicle is needed in subframe 4
A/N results are returned to, ground base station is retransmitted in subframe 8.Airborne vehicle processing PDCCH (Physical
Downlink Control Channel；Physical Downlink Control Channel), PDSCH (Physical Downlink
Shared Channel；Physical Downlink Shared Channel) and A/N values of feedback are got out, at least need 3 milliseconds
Time, in 200 kms apart from upper, the data transfer corresponding path delay of time is between airborne vehicle and ground base station
1.34 milliseconds, if according to normal descending HARQ sequential, airborne vehicle can not get out A/N values in time.
Based on above-mentioned technical problem, as shown in fig.6, when airborne vehicle is away from ground base station, airborne vehicle exists
It is fixed to reply NACK at the time of needing the A/N results for replying descending first transmission (subframe 4), and under
Capable decoding continues, and obtained A/N values are stored by software.Ground base station is received after NACK again,
Retransmitted in subframe 8, in subframe 12, airborne vehicle feeds back A/N according to the last A/N results of storage
Value.If last A/N results are ACK, then airborne vehicle is not retransmitted into row decoding to this, directly
Connect discarding.In order to ensure demodulation performance, number of retransmissions is increased to 5 times for 4 times as defined in existing protocol,
Version order is retransmitted to be changed to (0,1,2,3,0).
Step 220：The ground base station receives the communication data after described group of bag processing according to the UCI.
In summary, aviation communication system by one or more ground 4G and its evolution technology wireless base station (with
Lower abbreviation wireless base station) foundation is to the radio honeycomb shape seamless coverage in spatial domain, and the embodiment of the present invention is to ground 4G
And its air interface protocol of evolution technology mobile communication is modified, make it to be adapted to aerial high-speed flight
Airborne vehicle；Also, airborne vehicle flies in the spatial domain that this aviation communication system is covered, contained receiver
Signal reception and transmitting can be carried out with the ground 4G and its evolution technology wireless base station of this air line, built
Vertical connection, carries out high speed data transfer.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or knot
The form of embodiment in terms of conjunction software and hardware.Wherein wrapped one or more moreover, the present invention can be used
Containing computer usable program code computer-usable storage medium (include but is not limited to magnetic disk storage,
CD-ROM, optical memory etc.) on the form of computer program product implemented.
The present invention is with reference to the production of method according to embodiments of the present invention, equipment (system) and computer program
The flow chart and/or block diagram of product is described.It should be understood that can by computer program instructions implementation process figure and
/ or each flow and/or square frame in block diagram and the flow in flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to all-purpose computer, special-purpose computer, insertion
Formula processor or the processor of other programmable data processing devices are to produce a machine so that pass through and calculate
The instruction of the computing device of machine or other programmable data processing devices is produced for realizing in flow chart one
The device for the function of being specified in individual flow or multiple flows and/or one square frame of block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or the processing of other programmable datas to set
In the standby computer-readable memory worked in a specific way so that be stored in the computer-readable memory
Instruction produce include the manufacture of command device, the command device realization in one flow or multiple of flow chart
The function of being specified in one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices, made
Obtain and perform series of operation steps on computer or other programmable devices to produce computer implemented place
Reason, so that the instruction performed on computer or other programmable devices is provided for realizing in flow chart one
The step of function of being specified in flow or multiple flows and/or one square frame of block diagram or multiple square frames.
, but those skilled in the art once know base although preferred embodiments of the present invention have been described
This creative concept, then can make other change and modification to these embodiments.So, appended right will
Ask and be intended to be construed to include preferred embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without de- to the embodiment of the present invention
From the spirit and scope of the embodiment of the present invention.So, if these modifications and variations category of the embodiment of the present invention
Within the scope of the claims in the present invention and its equivalent technologies, then the present invention be also intended to comprising these change and
Including modification.
Claims (9)
1. a kind of air communications method, applied in aviation communication system, it is characterised in that the aviation
Communication system includes airborne vehicle, and at least one ground base station is deposited between the airborne vehicle and the ground base station
In communication connection, and there is overlapping region between the overlay area of two neighboring ground base station institute transmission signal,
Methods described includes：
When the airborne vehicle first transmission communication data, by the corresponding control information UCI of the communication data
Transmit to ground base station；And
The communication data is packaged processing；
In hybrid automatic repeat-request HARQ procedure, the airborne vehicle group bag is handled after communication number
According to sending to the ground base station, the ground base station is notified to be received according to the UCI after described group of bag processing
Communication data；Wherein, the maximum retransmission of the HARQ is at least five times.
2. the method as described in claim 1, it is characterised in that the airborne vehicle also includes at least one
Radio-frequency antenna and wireless communication terminal, the radio-frequency antenna exists with the wireless communication terminal to be communicated to connect,
The wireless communication terminal is communicated by the radio-frequency antenna with the ground base station；
Wherein, the radio-frequency antenna is vertical polarized antenna or omnidirectional antenna, when the radio-frequency antenna is vertical
During straight poliarizing antenna, the vertical polarized antenna is the directional aerial that wave beam broadband is preset range.
3. method as claimed in claim 1 or 2, it is characterised in that methods described also includes：
In the HARQ procedure, the version number of the communication data after the airborne vehicle re-transmission group bag processing
Order is followed successively by version 0, version 0, version 2, version 3, version 1.
4. a kind of air communications method, applied in aviation communication system, it is characterised in that the aviation
Communication system includes airborne vehicle, and at least one ground base station is deposited between the airborne vehicle and the ground base station
In communication connection, and there is overlapping region between the overlay area of two neighboring ground base station institute transmission signal,
Methods described includes：
The ground base station is initially received the packet that the airborne vehicle is sent, if being carried out to the packet
After demodulation process, the communication data that the airborne vehicle is sent is not obtained, then since being retransmitted first time data,
The ground base station carries out hybrid automatic repeat-request HARQ merging treatments；Wherein, the HARQ
Maximum retransmission is at least five times, and the packet comprises at least control information UCI；
The ground base station receives the communication data that the airborne vehicle is retransmitted according to the UCI.
5. method as claimed in claim 4, it is characterised in that methods described also includes：
In the HARQ procedure, the ground base station receives the communication data that the airborne vehicle is retransmitted
Version number's order is followed successively by version 0, version 0, version 2, version 3, version 1.
6. a kind of aviation communication system, it is characterised in that including airborne vehicle, at least one ground base station,
There is communication connection between the airborne vehicle and the ground base station, and two neighboring ground base station launches letter
Number overlay area between there is overlapping region, wherein：
Airborne vehicle, it is for when the airborne vehicle first transmission communication data, the communication data is corresponding
Control information UCI transmission is to ground base station；And the communication data packages processing；It is automatic in mixing
In repeat request HARQ process, the communication data after the airborne vehicle handles group bag is sent to described
Face base station；Wherein, the maximum retransmission of the HARQ is at least five times；
The ground base station, for receiving the communication data after described group of bag processing according to the UCI.
7. system as claimed in claim 6, it is characterised in that the airborne vehicle also includes at least one
Radio-frequency antenna and wireless communication terminal, the radio-frequency antenna exists with the wireless communication terminal to be communicated to connect,
The wireless communication terminal is communicated by the radio-frequency antenna with the ground base station；
Wherein, the radio-frequency antenna is vertical polarized antenna or omnidirectional antenna, when the radio-frequency antenna is vertical
During straight poliarizing antenna, the vertical polarized antenna is the directional aerial that wave beam broadband is preset range.
8. system as claimed in claim 7, it is characterised in that the radio-frequency antenna is located at the aviation
On the belly of device or top；Or, the radio-frequency antenna is located at the left side or right side of the airborne vehicle；Or,
The radio-frequency antenna is separately mounted to belly and the top of the airborne vehicle.
9. the system as described in any one of claim 6 to 8, it is characterised in that in the HARQ mistakes
Cheng Zhong, version number's order of the communication data after the airborne vehicle re-transmission group bag processing is followed successively by version 0, version
This 0, version 2, version 3, version 1.
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| CN201610245077.4A CN107306149B (en) | 2016-04-19 | 2016-04-19 | Aviation communication method and system |
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| CN201610245077.4A CN107306149B (en) | 2016-04-19 | 2016-04-19 | Aviation communication method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111050381A (en) * | 2018-10-12 | 2020-04-21 | 华为技术有限公司 | Data transmission method and device |
| WO2020151747A1 (en) * | 2019-01-24 | 2020-07-30 | Mediatek Singapore Pte., Ltd. | Method and apparatus for user equipment processing timeline enhancement in mobile communications |
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