CN110519723A - A kind of communication means of satellite and terminal device in duplex multifrequency section - Google Patents
A kind of communication means of satellite and terminal device in duplex multifrequency section Download PDFInfo
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- CN110519723A CN110519723A CN201910733849.2A CN201910733849A CN110519723A CN 110519723 A CN110519723 A CN 110519723A CN 201910733849 A CN201910733849 A CN 201910733849A CN 110519723 A CN110519723 A CN 110519723A
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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
- H04B7/18513—Transmission in a satellite or space-based system
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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
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- 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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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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- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of satellite and terminal device duplex multifrequency section communication means, including select from M duplex band of system one as anchoring frequency range, and the transmission band configuration information on the downlink of anchoring frequency range；According to frequency range configuration information, M frequency range can be configured to uplink, downlink, device-to-device (D2D), 4 kinds of states of leaving unused.Typically, anchoring frequency range can be configured to uplink and downlink Time Division is multiplexed；It is configured to the period of uplink, select N number of frequency range to be configured to uplink in remaining frequency range, remaining M-1-N frequency range is configured to such as D2D in anchoring frequency range；Anchoring frequency range is configured to the period of downlink, select L frequency range to be configured to downlink in remaining frequency range, remaining M-1-L frequency range is configured to such as D2D.The program is worked at the same time without satellite receiver, avoid in multiband system because frequency range interval it is insufficient caused by interfere between transceiver, simplify satellite receiver design complexities and alleviate satellite load.
Description
Technical field
The present invention relates to the communications field more particularly to it is a kind of suitable for satellite and terminal device duplex multifrequency section communication
Method.
Background technique
Currently, there is a kind of communication system --- very high frequency(VHF) to realize the satellite and ship of E- navigation (e-Navigation)
(VHF, Very High Frequency) data exchange system (VDES, VHF Data ExchangeSystem).
The space-based data switch section namely VDE- of low rail (LEO, Low Earth Orbiting) satellite are based in VDES
SAT is used to support the ship of global range and intersatellite two-way communication.VDES system to International Telecommunication Union (ITU,
International Telecommunication Union) application is used for satellite and the frequency range of marine communication is in VHF maritime affairs
Cellular band, including multiple discrete frequency ranges, using FDD operating mode, (i.e. all frequency ranges are either simplex frequency range, and a part is used
Make uplink, other are used as downlink).Due to there is no enough separation spacings between these frequency ranges, according to the full-duplex communication side FDD
Formula, the energy of transmitter may be leaking directly into receiver (out of band emissions), cause between uplink downlink
Cross jamming, this requires transceiver on the one hand bandpass filter with high performance, between another aspect transmitter and receiver
It is spatially segregated with farther away, and this two o'clock is in load and the conditional satellite of size that (especially LEO is small-sized to be defended
Star) on be difficult to realize.
Therefore, under this HF mode, half-duplex operation mode can only be used in VDE-SAT reality, is sent out by avoiding
It penetrates machine and receiver and avoids the cross jamming between uplink downlink in same time service.However, FDD half-duplex operation mode
So that half frequency spectrum is idle, the availability of frequency spectrum is low.Specifically, in any time period, the frequency range for uplink transmission is obtained
In use, the frequency range for downlink transmission is just idle；Vice versa.
Summary of the invention
Technical problem: it is an object of the invention to solve VDE-SAT to cause to have to adopt in reality using FDD communication mode
The low problem of the availability of frequency spectrum caused by half-duplex.
Technical solution: to achieve the goals above, the present invention provides the following technical solution:
A kind of communication means of satellite and terminal device in duplex multifrequency section, which comprises the following steps:
1) one is arbitrarily chosen from M duplex band of system as anchoring frequency range, and in the downlink chain of anchoring frequency range
Road transmission band configuration information；
2) according to frequency range configuration information, timesharing carries out information transmission and idle configuration, information in turn in each frequency range
Transmission includes uplink transmission, downlink transmission and D2D (between device-to-device) communication.
Further, in the step 1), the frequency range configuration information of system is periodically broadcasted, the frequency of current transmission
Section configuration information is for configuring each frequency range in the current period period.
Further, in the step 2), the period of uplink transmission is carried out in anchoring frequency range, at remaining M-1
N number of frequency range is chosen in frequency range and carries out uplink transmission, and wherein N is to meet 0≤N≤M-1 integer.
Further, in the step 2), the period of downlink transmission is carried out in anchoring frequency range, at remaining M-1
L frequency range is chosen in frequency range and carries out downlink transmission, and wherein L is to meet 0≤L≤M-1 integer.
Further, M-1-N frequency range for not being used for uplink transmission in remaining M-1 frequency range is communicated for D2D
With it is one of idle.
Further, M-1-L frequency range for not being used for downlink transmission in remaining M-1 frequency range is communicated for D2D
With it is one of idle.
The utility model has the advantages that the present invention is compared with prior art:
The present invention is worked at the same time without satellite receiver, avoid in multiband system because frequency range interval it is insufficient caused by
It is interfered between transceiver, simplify satellite receiver design complexities and alleviates satellite load.
Detailed description of the invention
Fig. 1 is the FDD frequency range schematic diagram that VDES system is used for satellite and marine communication to ITU application at present；
Fig. 2 is FDD half-duplex operation configuration schematic diagram；
Fig. 3 is the HF mode schematic diagram that the VDES system that the present embodiment proposes is used for satellite and marine communication；
Fig. 4 is the communication mode schematic diagram of the VDE-SAT Satellite that embodiment 1 provides and ship in duplex multifrequency section；
Fig. 5 is the communication mode schematic diagram of the VDE-SAT Satellite that embodiment 2 provides and ship in duplex multifrequency section.
Fig. 6 is the communication mode schematic diagram of the VDE-SAT Satellite that embodiment 3 provides and ship in duplex multifrequency section；
Fig. 7 is the communication mode schematic diagram of the VDE-SAT Satellite that embodiment 4 provides and ship in duplex multifrequency section；
Fig. 8 is the communication mode schematic diagram of the VDE-SAT Satellite that embodiment 5 provides and ship in duplex multifrequency section.
Specific embodiment
The present invention is further illustrated below in conjunction with embodiment and attached drawing.
First it should be noted that terminal device is also known as mobile terminal (Mobile Terminal, MT), user equipment
(User Equipment, UE) etc. is that one kind with network can communicate providing a user data connectivity by satellite
Equipment, such as wireless sensor (Sensor), marine ships, buoy (Buoy), search and rescue (SAR, Search and
Rescue) transponder etc..When embodiments of the present invention set forth below, by taking the VDE-SAT system in VDES system as an example, noun
" ship " and " equipment " is often used alternatingly, but it will be appreciated by those skilled in the art that its meaning.For example, between device-to-device
(device to device, D2D) communication or point-to-point (Point to point, P2P) communication, are also referred to as ship in VDES system
Ship is communicated.
VDES supports four kinds to eat dishes without rice or wine technology to meet plurality of application scenes in E- navigation, including for static between marine ships
The ship automatic identification system AIS transmitted with dynamic keyword information, for the special of data communication more general between marine ships
Using message ASM, the ground data switching part VDE- based on bank base of two-way communication between offshore water ship and bank station is supported
TER, and support the ship of global range and the space-based data switch section VDE- based on LEO satellite of satellite two-way communication
SAT。
The range of VHF maritime affairs cellular band is 156MHz to 174MHz, and is multiple letters by unit bandwidth partition of 25kHz
Road (channel), ITU have formulated band channels number (channel index) to some channels.As shown in fig.1, it shows
Current VDES system is used for the frequency range of satellite and marine communication to ITU application, in the range of VHF maritime affairs cellular bands.
Wherein, it is indicated inside rectangle frame in frequency range by the channel number that ITU is formulated, such as channel number 2028.ITU is to be allocated to be given
In the frequency range that VDE-SAT is used, channel number 1026,1086,2026,2086, which is reserved exclusively for VDE-SAT uplink, to be made
With (i.e. simplex channel or simplex channel), (respective frequencies range is in the frequency range of intermediate also non-channelizing
160.9625MHz to 161.4875MHz) opens the frequency range that one section of bandwidth is 525kHz and is used for VDE-SAT downlink transmission
(i.e. simplex channel or simplex channel).Under this HF mode, VDE-SAT in practice can only be logical using half-duplex
Letter mode, by avoiding transmitter and receiver from avoiding the cross jamming between uplink downlink, frequency in same time service
Section operational version refers to Fig. 2.
As can be known from Fig. 1, it is dedicated for there are three the frequency ranges that VDE-SAT is used namely M=3.Since low frequency, first
A is the frequency range for including channel number 1026 and 1086, and corresponding bandwidth is 50kHz, referred to as the first frequency range；Second is frequency
Range is the frequency range of 160.9625MHz to 161.4875MHz, and corresponding bandwidth is 525kHz, referred to as the second frequency range；Third is a to be
Frequency range including channel number 2026 and 2086, corresponding bandwidth are 50kHz, referred to as third frequency range, please refer to Fig. 3.
The embodiment of the present application provide it is a kind of suitable for VDE-SAT Satellite and ship these multibands communication mode,
Its Satellite need to only have the function of that half-duplex namely satellite are not necessarily to send in completion of same time downlink and connect with uplink
It receives.
The method of proposition specifically, referring to FIG. 3, first this M=3 frequency range, (the first frequency range in Fig. 3, second are frequently
Section and third frequency range) it is set to duplex band (duplex channels).A frequency range is arbitrarily chosen from 3 duplex bands to make
For anchoring (anchor) frequency range, in the present embodiment, referring to FIG. 4, choosing the second intermediate frequency range as anchoring frequency range, and in anchor
Determine transmission band configuration information in frequency range.In VDES system, billboard signaling channel (BBSC, Bulletin Board
Signaling Channel) it is down channel, it is used for broadcast system configuration information.In the present embodiment, also comprising frequency in BBSC
Section configuration information simultaneously transmits on the downlink of anchoring frequency range.The frequency range configuration information of system is periodically broadcasted, when
The frequency range configuration information of preceding transmission for being configured to each frequency range in the current period period, current BBSC thus can be used for
Each frequency range in the current period period is configured, for example each frequency range of next frame or several frames is configured.
It is anchored frequency range, is the frequency range arbitrarily chosen from M duplex band of system, is similar to some systems such as NB-IoT system
In anchor carrier.Anchoring frequency range can uniquely be defined or be determined by the amount of bandwidth of frequency range and the centre frequency of frequency range, such as
Anchor carrier in the present embodiment is the second frequency range, which is 525kHz, and the centre frequency of frequency range is
(160.9625MHz+ 161.4875-160.9625) MHz/2=161.225MHz.The purpose for choosing anchoring frequency range is for cell
Control station (satellite) is on it to movement station (terminal device) broadcast system configuration information.In the cell of satellite covering or service
All terminal devices go in anchoring frequency range to receive the system configuration information of broadcast, to read important some with confidence of system
Breath, including the frequency range configuration information in the present embodiment, for later with the communication of satellite.
According to frequency range configuration information, timesharing carries out information transmission in turn and leaves unused in M frequency range for including anchoring frequency range
Configuration, information transmission includes uplink transmission, downlink transmission and D2D, and wherein uplink transmits corresponding ship hair
It send, the communication link direction of satellite reception, downlink transmission corresponds to satellite transmission, the received communication link direction of ship, D2D
Communication between terminal device and terminal device.
The period that uplink transmission is carried out in anchoring frequency range, remaining M-1=2 frequency range (namely the first frequency range with
Third frequency range) on choose N number of frequency range and carry out uplink transmission, wherein N be the integer of satisfaction 0≤N≤2, in remaining 2 frequency range
Be not used for uplink transmission 2-N frequency range can be used for D2D communication and leave unused one of.Under being carried out in anchoring frequency range
The period of uplink transmission chooses L frequency range in remaining 2 frequency range (namely the first frequency range and third frequency range) and carries out downlink chain
Road transmission, wherein L is the integer for meeting 0≤L≤2, is not used for 2-N frequency range of downlink transmission in remaining 2 frequency range
One of can be used for D2D communication and leave unused.It should be understood that the information for the different conditions that are time-multiplexed in each frequency range passes
When defeated, information transmits occupied time scale and does not do any restrictions.
Embodiment 1
According to frequency range configuration information, the uplink that is time-multiplexed in the anchoring frequency range of VDE-SAT transmission and downlink
Transmission, and after determining the sequence of uplink transmission and downlink transmission, in remaining 2 VDE-SAT frequency range (namely first
Frequency range and third frequency range) on all carry out and be anchored the transmission in same direction in frequency range.Referring to FIG. 4, enterprising in anchoring frequency range
When row uplink is transmitted, uplink transmission is also carried out in remaining 2 frequency range；Downlink biography is carried out in anchoring frequency range
When defeated, downlink transmission is also carried out in remaining 2 frequency range.Figure 4, it is seen that in the present embodiment, in each frequency range
Be all time of uplink transmission to be longer than time of downlink transmission.
Embodiment 2
With reference to Fig. 5, according to frequency range configuration information, the uplink that is time-multiplexed in the anchoring frequency range of VDE-SAT transmission and
Downlink transmission, and after determining the sequence of uplink transmission and downlink transmission, uplink is configured in anchoring frequency range
The period of link transmission, remaining 2 VDE-SAT frequency range are all configured to uplink transmission, are configured to downlink chain in anchoring frequency range
The period of road transmission, remaining 2 frequency range are configured to the communication of the ship-to-ship in D2D namely VDE-SAT system.From fig. 5, it can be seen that
In the present embodiment, the time for being anchored downlink transmission in frequency range is longer than the time of uplink transmission, in other two frequency ranges
The time of ship-to-ship communication is longer than the time of uplink transmission.
Embodiment 3
With reference to Fig. 6, according to frequency range configuration information, the uplink that is time-multiplexed in the anchoring frequency range of VDE-SAT transmission and
Downlink transmission, and after determining the sequence of uplink transmission and downlink transmission, uplink is configured in anchoring frequency range
The period of link transmission, remaining 2 VDE-SAT frequency range are all configured to uplink transmission, are configured to downlink chain in anchoring frequency range
The period of road transmission, third frequency range is configured to downlink transmission in remaining 2 frequency range, and it is logical that the first frequency range is configured to ship-to-ship
Letter.From fig. 6, it can be seen that being anchored in frequency range and third frequency range, the time of downlink transmission is longer than uplink in this embodiment
The time of link transmission, the time of ship-to-ship communication is longer than the time of uplink transmission in the first frequency range.
Embodiment 4
With reference to Fig. 7, according to frequency range configuration information, the uplink that is time-multiplexed in the anchoring frequency range of VDE-SAT transmission and
Downlink transmission, and after determining the sequence of uplink transmission and downlink transmission, uplink is configured in anchoring frequency range
The period of link transmission, remaining 2 VDE-SAT frequency range are all configured to uplink transmission；Downlink chain is configured in anchoring frequency range
The first downlink period of road transmission, in remaining 2 frequency range, third frequency range is configured to downlink transmission, and the first frequency range is configured to
Ship-to-ship communication；The second downlink period of downlink transmission is configured in anchoring frequency range, in remaining 2 frequency range, the first frequency range
It is configured to downlink transmission, third frequency range is configured to ship-to-ship communication.It therefore is uplink in the first frequency range and third frequency range
Three kinds of road, downlink and ship-to-ship information transmission state timesharing carry out.From figure 7 it can be seen that in this embodiment, anchoring frequency
Duan Shang, the time of downlink transmission are longer than the time of uplink transmission；In first frequency range and third frequency range, ship-to-ship communication
It is longer than the time of uplink transmission with the time of downlink transmission.
Embodiment 5
With reference to Fig. 8, according to frequency range configuration information, it is downlink transmission in the anchoring frequency range of VDE-SAT and leaves unused this
Two states timesharing carries out.It is configured to the period of downlink transmission in anchoring frequency range, it is logical that remaining 2 frequency range is configured to ship-to-ship
Letter；It is configured to the period of idle state in anchoring frequency range, remaining 2 frequency range is configured to uplink transmission.It can from Fig. 7
Out, it in this embodiment, is anchored in frequency range, the time of downlink transmission is longer than the time of idle state；First frequency range and
In three frequency ranges, ship-to-ship call duration time is longer than the time of uplink transmission.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of satellite and terminal device are in the communication means of duplex multifrequency section, which comprises the following steps:
1) one is arbitrarily chosen from M duplex band of system as anchoring frequency range, and on the downlink of anchoring frequency range
Transmission band configuration information；
2) according to frequency range configuration information, timesharing carries out information transmission and idle configuration, information transmission in turn in each frequency range
Including uplink transmission, downlink transmission and D2D communication.
2. satellite according to claim 1 and terminal device are in the communication means of duplex multifrequency section, which is characterized in that described
In step 1), the frequency range configuration information of system is periodically broadcasted, and the frequency range configuration information of current transmission is used for current
Each frequency range in period times is configured.
3. satellite according to claim 1 and terminal device are in the communication means of duplex multifrequency section, which is characterized in that described
In step 2), the period of uplink transmission is carried out in anchoring frequency range, and N number of frequency range is chosen in remaining M-1 frequency range and is carried out
Uplink transmission, wherein N is to meet 0≤N≤M-1 integer.
4. satellite according to claim 1 and terminal device be in the communication means of duplex multifrequency section, it is further characterized in that, institute
State in step 2), anchoring frequency range on carry out downlink transmission period, in remaining M-1 frequency range selection L frequency range into
Row downlink transmission, wherein L is to meet 0≤L≤M-1 integer.
5. satellite according to claim 3 and terminal device are in the communication means of duplex multifrequency section, which is characterized in that remaining
Be not used in M-1 frequency range uplink transmission M-1-N frequency range for D2D communication and leave unused one of.
6. satellite according to claim 4 and terminal device are in the communication means of duplex multifrequency section, which is characterized in that remaining
It not be used to M-1-L frequency range of downlink transmission in M-1 frequency range communicate for D2D and one of idle.
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| CN201910733849.2A CN110519723B (en) | 2019-08-09 | 2019-08-09 | Communication method for satellite and terminal equipment in duplex multi-band |
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| CN201910733849.2A CN110519723B (en) | 2019-08-09 | 2019-08-09 | Communication method for satellite and terminal equipment in duplex multi-band |
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| CN113242088A (en) * | 2021-06-22 | 2021-08-10 | 上海航天电子通讯设备研究所 | Dynamic configuration method for VDE-SAT system communication coverage |
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| CN115459829A (en) * | 2022-08-01 | 2022-12-09 | 南京中科晶上通信技术有限公司 | Satellite communication method, system and storage medium |
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| CN115459829A (en) * | 2022-08-01 | 2022-12-09 | 南京中科晶上通信技术有限公司 | Satellite communication method, system and storage medium |
| CN117749330A (en) * | 2024-02-19 | 2024-03-22 | 天津讯联科技有限公司 | VDES satellite-ground link data retransmission processing method |
| CN117749330B (en) * | 2024-02-19 | 2024-05-03 | 天津讯联科技有限公司 | VDES satellite-ground link data retransmission processing method |
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