CN107919899B - Cloud relay communication system - Google Patents
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- CN107919899B CN107919899B CN201711449123.3A CN201711449123A CN107919899B CN 107919899 B CN107919899 B CN 107919899B CN 201711449123 A CN201711449123 A CN 201711449123A CN 107919899 B CN107919899 B CN 107919899B
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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
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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 invention discloses a cloud relay communication system, which comprises at least one cloud relay station carried on an aerial work platform and a plurality of remote ground stations connected with the cloud relay station; the remote ground station comprises a first access/forwarding antenna, at least one frequency shift channel, an uplink combining module, a downlink branching module, an uplink relay power amplification module, a downlink relay low-noise amplification module, a first duplex module and a directional relay antenna, wherein the first access/forwarding antenna, the frequency shift channel, the uplink combining module, the uplink relay power amplification module, the first duplex module, the downlink relay low-noise amplification module and the downlink branching module are sequentially connected, and the downlink branching module communicates with the cloud relay station through the frequency shift channel and the first access/forwarding antenna; the directional relay antenna is connected with the first duplex module.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a cloud relay communication system.
Background
As is well known, with the rapid development of wireless communication technology, long-distance wireless communication is widely used, but in the scenes of vast areas such as Xinjiang, inner mongolia, grasslands, deserts and mountainous areas, no fixed resident is basically available, and no mobile communication network coverage is generally available; in particular areas where natural disasters such as earthquakes and floods are severe, fixed communication network facilities are destroyed, and it is highly desirable to resume communication in disaster areas as soon as possible. The remote communication of temporary tasks such as emergency communication, combat command, scientific investigation, exploration trip, personnel search and rescue and the like is an important research subject at present.
There are two conventional implementations: firstly, a satellite communication telephone is adopted, a special communication terminal is needed, the communication cost is high, and the simultaneous free communication of multiple people cannot be met; secondly, various interphones are adopted, so that only a few short-distance objects can communicate with each other and cannot communicate with the outside; the emergency communication vehicle is adopted, so that the coverage area is small, the communication capacity is limited, and the communication return requirement is high; the communication requirement of a long distance and a large range cannot be met.
Disclosure of Invention
Aiming at the defects in the prior art, the cloud relay communication system provided by the invention can realize various long-distance mobile voice and data communication services in areas without communication base stations.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the cloud relay communication system comprises at least one cloud relay platform carried on an aerial work platform and a plurality of remote ground platforms connected with the cloud relay platform; the remote floor stand includes:
the first access/forwarding antenna is used for accessing the network access station to the network of the local communication base station or receiving and transmitting uplink or downlink signals of the interphone;
at least one frequency shift channel for frequency shift conversion of the received communication service signal and the relay signal;
the uplink combining module is used for combining uplink relay signals of a plurality of frequency bands/modes into one path of relay signal;
the downlink branching module is used for dividing the downlink relay signal into multiple paths of signals and sending the multiple paths of signals to the multiple frequency shifting channels;
the uplink relay power amplification module is used for amplifying the power of the received uplink or downlink relay signal;
the downlink relay low-noise amplification module is used for amplifying the received downlink or uplink relay signal with low noise;
the first duplex module is used for carrying out low-loss combination on the uplink or downlink relay signals; and
the directional relay antenna is used for pointing to the cloud relay station to receive and transmit relay signals;
the first access/forwarding antenna, the frequency shifting channel, the uplink combining module, the uplink relay power amplification module, the first duplex module, the downlink relay low-noise amplification module and the downlink branching module are sequentially connected, and the downlink branching module is communicated with the cloud relay station through the frequency shifting channel and the first access/forwarding antenna; the directional relay antenna is connected with the first duplex module.
Further, the cloud relay communication system further comprises at least one network access platform connected with the cloud relay platform, and the network access platform and the remote ground platform are identical in composition module.
Further, the cloud relay station includes: the relay antenna is used for receiving and transmitting uplink or downlink relay signals uploaded by the remote ground station and the network access station;
the second duplex module is used for carrying out low-loss combination on the uplink or downlink relay signals;
the downlink relay power amplification module is used for amplifying the transmitted downlink or uplink relay signals with high power;
the uplink relay low-noise amplification module is used for amplifying the received uplink relay signal with low noise; and
the frequency shift processing module is used for frequency shifting the received uplink relay signal into a downlink relay signal;
the relay antenna, the second duplex module, the uplink relay low-noise amplification module, the frequency shift processing module and the downlink relay power amplification module are connected in sequence, and the downlink relay power amplification module communicates with the network access station and the remote ground station through the second duplex module and the relay antenna.
Further, the frequency shift channel includes: the second access/forwarding antenna is used for accessing the network access station to the network of the local communication base station or receiving and transmitting uplink or downlink signals of the interphone;
the third duplex unit is used for carrying out low-loss combination on the uplink or downlink relay signals;
the communication low-noise amplifying unit is used for amplifying the received communication service signal with low noise;
a down-conversion unit for down-converting the received communication service signal into a baseband signal;
the baseband processing unit is used for carrying out baseband processing on the received communication service signals;
an uplink relay up-conversion unit for up-converting the received communication service baseband signal into an uplink relay signal;
the downlink relay down-conversion unit is used for down-converting the received downlink relay signal into a baseband signal;
an up-conversion unit for up-converting the communication service baseband signal into a communication service radio frequency signal; and
the communication power amplification unit is used for amplifying the transmitted communication service radio frequency signals with high power;
the second access/forwarding antenna, the third duplex unit, the communication low noise amplification unit, the down-conversion unit, the baseband processing unit and the uplink relay up-conversion unit are sequentially connected; the downlink relay down-conversion unit, the baseband processing unit, the up-conversion unit, the communication power amplification unit, the third duplex unit and the second access/forwarding antenna are sequentially connected.
Further, each frequency-shifting channel is a 450M talkback frequency-shifting channel, a GSM 900M frequency-shifting channel, a GSM 1800M frequency-shifting channel, a CDMA 800M frequency-shifting channel, a WCDMA 2100M frequency-shifting channel, a TD-SCDMA 2000M frequency-shifting channel, an LTE 2600M frequency-shifting channel or a WiFi 2400M frequency-shifting channel.
Further, the network access station and/or the remote ground station further comprise:
and the clock module is connected with the frequency shift channel and used for providing a reference clock for the communication system.
Further, the aerial working platform is an unmanned aerial vehicle platform or a fire balloon.
The beneficial effects of the invention are as follows: according to the scheme, due to the unique arrangement of the internal composition modules of the remote ground stations, under the condition of not depending on a communication network base station, the plurality of remote ground stations can directly carry out multipoint interconnection intercom communication through the cloud relay station, and after the network access station is arranged, the multipoint interconnection networking communication can be directly carried out.
The cloud relay station is arranged on the high-altitude operation platform, so that the position and the height of the cloud relay station can be freely adjusted according to the needs, and the diffraction capacity and the coverage range of system communication are remarkably improved;
in addition, the cloud relay station can realize frequency shift conversion and amplification of uplink or downlink relay signals through a plurality of modules, and has the advantages of simple structure, small size, light weight, low power consumption, long coverage, suitability for high-altitude bearing and the like.
The cloud relay station is low in power consumption and high in endurance, so that communication can be ensured for a long time; the cloud relay station adopts low-frequency transmission with low path loss/high diffraction in uplink or downlink relay, so that the coverage area and diffraction capacity are effectively enlarged; as the remote ground station can adopt directional antennas to carry out uplink or downlink relay receiving and transmitting, the coverage distance is further extended.
The scheme carries out secondary frequency shift relay forwarding through the cloud relay station and the frequency shift channel, so that the complexity of equipment is effectively reduced, and the expansion capacity of a system is remarkably improved, wherein the cloud relay station only provides the relay frequency shift forwarding channel, the volume and the weight of the equipment are small, and the equipment is universal for various communication systems/frequency bands; the system is added or replaced by different systems/frequency bands, only the frequency shifting channels and the antennas of the remote ground station and the network access station are required to be expanded or replaced, and the upgrading and the capacity expansion are simple.
Drawings
Fig. 1 is a schematic structural diagram of one embodiment of a cloud relay communication system.
Fig. 2 is a schematic block diagram of a network access station and a remote ground station of the cloud relay communication system.
Fig. 3 is a schematic block diagram of a cloud relay station of the cloud relay communication system.
Fig. 4 is a schematic block diagram of a frequency shift channel of each standard/frequency band of the cloud relay communication system.
Fig. 5 is a schematic structural diagram of another embodiment of a cloud relay communication system.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
Referring to fig. 1, fig. 1 illustrates a schematic diagram of an embodiment of a cloud relay communication system; as shown in fig. 1, the cloud relay communication system includes at least one cloud relay station mounted on an aerial work platform and a plurality of remote ground stations connected to the cloud relay station.
When the aerial work platform is implemented, the unmanned aerial vehicle platform or the fire balloon can be selected for use, and the aerial work platform in the two forms can flexibly adjust the position of the cloud relay station in the high air according to the needs, so that the diffraction capacity and coverage range of communication of the cloud relay communication system are obviously improved finally.
As shown in fig. 2, the remote ground station of the present solution includes: the first access/forwarding antenna is used for receiving and transmitting uplink or downlink signals of the local base station network or the interphone; the frequency shift channel is used for frequency shift conversion processing of various communication service signals and relay signals; the uplink combining module is used for combining uplink relay signals of a plurality of frequency bands/modes into one path of relay signal;
the downlink branching module is used for dividing the downlink relay signal into multiple paths of signals and sending the multiple paths of signals to the multiple frequency shifting channels; the uplink relay power amplification module is used for amplifying the received uplink relay signal with high power; the downlink relay low-noise amplification module is used for amplifying the received downlink relay signal with low noise;
the first duplex module is used for carrying out low-loss combination on the uplink or downlink relay signals; the directional relay antenna is used for receiving and transmitting relay signals by the high-gain directional cloud relay station; and the clock module is used for providing a system reference clock for the equipment.
As shown in fig. 2, the first access/forwarding antenna, the frequency shift channel, the uplink combining module, the uplink relay power amplification module, the first duplex module, the downlink relay low-noise amplification module and the downlink branching module are connected in sequence, and the downlink branching module communicates with the cloud relay station through the frequency shift channel and the first access/forwarding antenna; the directional relay antenna is connected with the first duplex module, and the clock module is connected with the frequency shift channel.
By adopting the structure, the remote ground stations can directly carry out multipoint interconnection intercom communication through the cloud relay station under the condition of not depending on a communication network base station by combining with the cloud relay station.
In one embodiment of the present invention, the cloud relay station (refer to fig. 3) of the present solution includes:
the relay antenna is used for receiving and transmitting uplink or downlink relay signals of the remote ground station and the network access station; the second duplex module is used for carrying out low-loss combination on the uplink or downlink relay signals; the downlink relay power amplification module is used for amplifying the transmitted downlink relay signal with high power; the uplink relay low-noise amplification module is used for amplifying the received uplink relay signal with low noise; and the frequency shift processing module is used for frequency shifting the received uplink relay signal into a downlink relay signal.
As shown in fig. 3, the relay antenna, the second duplex module, the uplink relay low-noise amplification module and the frequency shift processing module are sequentially connected with the downlink relay power amplification module, and the downlink relay power amplification module communicates with the network access station and the remote ground station through the second duplex module and the relay antenna.
As shown in fig. 5, in implementation, the cloud relay communication system of the present embodiment further includes at least one network access station connected to the cloud relay station, where the network access station and the remote ground station have the same composition module. The network access station and the far-end ground station have the same composition modules, but the communication power amplification unit, the up-conversion unit, the down-conversion unit and the uplink or downlink working frequency range of the communication low-noise amplification unit in the mobile channel module are reciprocal when the network access station and the far-end ground station transmit signals.
After the network access platform is arranged, the cloud relay platform is combined, and a plurality of remote ground stations can directly carry out multipoint interconnection intercom or networking communication through the cloud relay platform under the condition of not depending on a communication network base station.
The network downlink direction of the scheme is as follows: the method comprises the steps that a frequency shifting channel of a network access station in various modes/frequency bands receives downlink signals of a network and shifts the frequencies to be processed into uplink relay signals, the uplink relay signals are transmitted to a high-altitude cloud relay station through a directional relay antenna after combined and amplified, the cloud relay station shifts the frequencies of the received uplink relay signals to be downlink relay signals and transmits the downlink relay signals to a plurality of remote ground stations, and the remote ground stations recover to provide various terminal access networks for the downlink signals of the network after receiving the downlink relay signals through the directional relay antenna.
The network uplink direction of the scheme: the multi-system/frequency band frequency shift channels of the remote ground stations receive uplink signals of the terminals and shift frequencies to be processed into uplink relay signals, the uplink relay signals are combined and amplified and then sent to a high-altitude cloud relay station through a directional relay antenna, the cloud relay station shifts frequencies of the received uplink relay signals from the remote ground stations to be downlink relay signals and then sends the downlink relay signals to a network access station, and the network access station recovers the downlink relay signals to be a terminal uplink signal access network.
In one embodiment of the present invention, the frequency shift channel (refer to fig. 4) includes: the second access/forwarding antenna is used for receiving and transmitting uplink or downlink signals of the local base station network or the interphone; the third duplex unit is used for carrying out low-loss combination on the uplink or downlink communication service signals; the communication low-noise amplifying unit is used for amplifying the received communication service signal with low noise;
a down-conversion unit for down-converting the received communication service signal into a baseband signal; the baseband processing unit is used for carrying out baseband processing on the received communication service signals; an uplink relay up-conversion unit for up-converting the received communication service baseband signal into an uplink relay signal;
the downlink relay down-conversion unit is used for down-converting the received downlink relay signal into a baseband signal; an up-conversion unit for up-converting the communication service baseband signal into a communication service radio frequency signal; and the communication power amplification unit is used for amplifying the transmitted communication service radio frequency signals with high power.
As shown in fig. 4, the second access/forwarding antenna, the third duplex unit, the communication low noise amplifier unit, the down-conversion unit, the baseband processing unit and the up-conversion unit are connected in sequence; the downlink relay down-conversion unit, the baseband processing unit, the up-conversion unit, the communication power amplification unit, the third duplex unit and the second access/forwarding antenna are sequentially connected.
In implementation, each frequency-shifting channel is preferably a 450M intercom frequency-shifting channel, a GSM 900M frequency-shifting channel, a GSM 1800M frequency-shifting channel, a CDMA 800M frequency-shifting channel, a WCDMA 2100M frequency-shifting channel, a TD-SCDMA 2000M frequency-shifting channel, an LTE 2600M frequency-shifting channel or a WiFi 2400M frequency-shifting channel.
When the network access station and the remote ground station comprise a plurality of frequency shift channels, the channels of each frequency shift channel can be the same or different, and the same channel can be selected partially or different channels can be selected partially.
In implementation, the cloud relay station preferably uses two relay frequency bands for uplink or downlink relay transmission, and bandwidths of the uplink or downlink relay frequency bands are basically equal; the relay selects a low-frequency band to work, so that the coverage range and diffraction capacity of the system are effectively improved. The cloud relay station can transmit and receive the same antenna, so that the complexity and the size of equipment are reduced, and the deployment is convenient and easy.
Further, the system provided by the scheme adopts the secondary frequency shift relay forwarding through the cloud relay station and the frequency shift channel, so that the equipment complexity can be effectively reduced, and the system expansion capability is remarkably improved.
The system is added or replaced by different systems/frequency bands, only the frequency shifting channel and the antenna of the ground station (the remote ground station and the network access station) are required to be expanded or replaced, and the upgrading and the capacity expansion are simple; the system supports multi-system and multi-band aggregation relay, can expand and support the concurrent work of multiple services such as voice, high-speed data and the like of various bandwidths, and supports communication services in two duplex modes of TDD and FDD; the system supports various networking modes of point-to-point and point-to-multipoint.
The above is only an example of the present solution, and is not intended to limit the present solution, and various modifications and variations of the present solution will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present solution should be included in the scope of the claims of the present solution.
Claims (5)
1. The cloud relay communication system is characterized by comprising at least one cloud relay platform carried on an aerial work platform and a plurality of remote ground platforms connected with the cloud relay platform; the remote floor stand comprises:
the first access/forwarding antenna is used for accessing the network access station to the network of the local communication base station or receiving and transmitting uplink or downlink signals of the interphone;
at least one frequency shift channel for frequency shift conversion of the received communication service signal and the relay signal;
the uplink combining module is used for combining uplink relay signals of a plurality of frequency bands/modes into one path of relay signal;
the downlink branching module is used for dividing the downlink relay signal into multiple paths of signals and sending the multiple paths of signals to the multiple frequency shifting channels;
the uplink relay power amplification module is used for amplifying the power of the received uplink or downlink relay signal;
the downlink relay low-noise amplification module is used for amplifying the received downlink or uplink relay signal with low noise;
the first duplex module is used for carrying out low-loss combination on the uplink or downlink relay signals; and
the directional relay antenna is used for pointing to the cloud relay station to receive and transmit relay signals;
the first access/forwarding antenna, the frequency shifting channel, the uplink combining module, the uplink relay power amplification module, the first duplex module, the downlink relay low-noise amplification module and the downlink branching module are sequentially connected, and the downlink branching module communicates with a local base station or a terminal through the frequency shifting channel and the first access/forwarding antenna; the directional relay antenna is connected with the first duplex module;
the cloud relay communication system further comprises at least one network access platform connected with the cloud relay platform, wherein the network access platform and the remote ground platform form the same module;
the frequency shift channel comprises:
the second access/forwarding antenna is used for accessing the network access station to the network of the local communication base station or receiving and transmitting uplink or downlink signals of the interphone;
the third duplex unit is used for carrying out low-loss combination on the uplink or downlink relay signals;
the communication low-noise amplifying unit is used for amplifying the received communication service signal with low noise;
a down-conversion unit for down-converting the received communication service signal into a baseband signal;
the baseband processing unit is used for carrying out baseband processing on the received communication service signals;
an uplink relay up-conversion unit for up-converting the received communication service baseband signal into an uplink relay signal;
the downlink relay down-conversion unit is used for down-converting the received downlink relay signal into a baseband signal;
an up-conversion unit for up-converting the communication service baseband signal into a communication service radio frequency signal; and
the communication power amplification unit is used for amplifying the transmitted communication service radio frequency signals with high power;
the second access/forwarding antenna, the third duplex unit, the communication low-noise amplification unit, the down-conversion unit, the baseband processing unit and the uplink relay up-conversion unit are connected in sequence; the downlink relay down-conversion unit, the baseband processing unit, the up-conversion unit, the communication power amplification unit, the third duplex unit and the second access/forwarding antenna are sequentially connected.
2. The cloud relay communications system of claim 1, wherein the cloud relay comprises:
the relay antenna is used for receiving and transmitting uplink or downlink relay signals uploaded by the remote ground station and the network access station;
the second duplex module is used for carrying out low-loss combination on the uplink or downlink relay signals;
the downlink relay power amplification module is used for amplifying the transmitted downlink or uplink relay signals with high power;
the uplink relay low-noise amplification module is used for amplifying the received uplink relay signal with low noise; and
the frequency shift processing module is used for frequency shifting the received uplink relay signal into a downlink relay signal;
the relay antenna, the second duplex module, the uplink relay low-noise amplification module, the frequency shift processing module and the downlink relay power amplification module are connected in sequence, and the downlink relay power amplification module is communicated with the network access station and the remote ground station through the second duplex module and the relay antenna.
3. The cloud relay communication system of claim 1, wherein each of said frequency-shifting channels is a 450M intercom frequency-shifting channel, a GSM 900M frequency-shifting channel, a GSM 1800M frequency-shifting channel, a CDMA 800M frequency-shifting channel, a WCDMA 2100M frequency-shifting channel, a TD-SCDMA 2000M frequency-shifting channel, an LTE 2600M frequency-shifting channel, or a WiFi 2400M frequency-shifting channel.
4. The cloud relay communication system according to claim 1, wherein the network access station and/or the remote land station further comprises:
and the clock module is connected with the frequency shift channel and used for providing a reference clock for the communication system.
5. The cloud relay communication system of any of claims 1-4, wherein said aerial work platform is an unmanned aerial vehicle platform or a fire balloon.
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