CN1684393A - High efficiency sub-orbital high altitude telecommunications system - Google Patents
High efficiency sub-orbital high altitude telecommunications system Download PDFInfo
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- CN1684393A CN1684393A CNA2004100432092A CN200410043209A CN1684393A CN 1684393 A CN1684393 A CN 1684393A CN A2004100432092 A CNA2004100432092 A CN A2004100432092A CN 200410043209 A CN200410043209 A CN 200410043209A CN 1684393 A CN1684393 A CN 1684393A
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- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 238000001228 spectrum Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 104
- 238000000034 method Methods 0.000 claims description 19
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000010267 cellular communication Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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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
- H04B7/18502—Airborne stations
- H04B7/18504—Aircraft used as relay or high altitude atmospheric platform
-
- 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
- H04B7/18502—Airborne stations
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- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
A wireless telecommunications system comprising a plurality of telecommunications nodes (28) that include receivers and transmitters that are located in a sub-orbital plane. The telecommunications signals are broadband digital radio signals which are modulated by code division multiple access spread spectrum technology. The receivers include a plurality of antennae (48) that are operative to receive relatively weak telecommunications signals and which use spatial processing to identify their source so that maximum utilization of the spectrum is made available for use by the telecommunications signals without interference.
Description
Technical field
The present invention relates to a communication system, on the sub-track plane, work, and can improve the communication system of available communication channel validity and utilization rate more specifically to one.
Background technology
Present patent application is to submit, be entitled as the further part of No. the 08/100th, 137, the patent application of " sub-track, high altitude communication system " on July 30th, 1993.
The ability that the development of cellular communication is satisfactorily handled the communication service of generation to industry has caused white elephant.Therefore, the user of analog cellular communication system found before they can insert or receive call at present, may wait for an available communication channel.In addition, ongoing call may run into form of noise or be actually the interference of another time communication cross-talk.
Sometimes, if when a side roams in the sub-district that does not have available communication channel, ongoing calling may be interrupted.
Because distribute to limited this fact of frequency number of cellular communication, it is more serious that problem becomes.Therefore, expectation problem will worsen along with the increase of cellular communication demand.
Proposed several improved analog-and digital-technology, they successfully are used for improving the communication channel number under limited usable frequency number.
The most important thing is time division multiple access (TDMA) and code division multiple access (CDMA) in this class technology.
TDMA is most widely used technology.It can make single communication channel be used for a plurality of callings.In cycle, give certain discrete time of each call distribution at interval in communication channel, therefore improved efficient.
CDMA uses the signal of communication with broader frequency spectrum to obtain efficient.It distinguishes calling by add peculiar " noise " spread signal on each signal of communication with other signal of communication in the difference sub-district.The receiver that has a computer-aided equipment with call identifying, carries out despreading to signal of communication to " noise " signal interpretation of appointment then.
" frequency hopping " is a kind of form of CDMA, and it expands to calling on a series of frequencies.It uses a code to discern used frequency sequence.
The work of carrying out is can discern the small-signal of launching from a sub-district about development in addition, and can be they systems with other Signal Separation of launching from same sub-district, make this system with the digital multiple-access technology, for example CDMA in conjunction with the time, the available communication channel number increases greatly.
The trial that increases the communication channel availability also comprises dwindles sub-district and reduction and base station communication power demand.This comes from the small-signal transmission capacity and reduces this fact.Therefore, because its intensity reduces rapidly, same frequency can be used in the nigh non-adjacent sub-district.
But,, the huge base station of number must be arranged for the required sub-district number of the large-capacity communication that provides support.Some experts estimate that the main metropolitan area that only covers the U.S. just needs 100,000 sub-districts at least.Each sub-district all will need its static antenna tower.
In addition, for switching and the management of handling the interval roaming needs of cell phone is assigned to some frequency of call usefulness again, need a huge and complicated computer system.
Can not determine whether this problem can and reasonably solve in the time with a rational ground system of cost.Therefore, although the typical defect relevant with this type systematic, for example shielding, decay and the scope restriction etc. that cause of sighting distance, signal reflex can be eliminated by reducing cell range and increase the sub-district number, but geography, politics, environment and social factor may be forbidden at certain areas placement antenna tower, thereby can't be obtained the rational sub-district of scope in these areas.
A satellite system can be avoided these problems, and wherein every satellite is as a base-station node, and constitutes Cellular Networks.But the relatively large transmitter of required power in these systems is because satellite is normally operated in 22,500 miles places, earth top.In addition, unless satellite is geosynchronous, otherwise must provide a kind of device be used for when they through on the earth during certain specified point in the inter-satellite switching signal.In addition, the same with ground node, when the calling party roams in the minizone, need a kind of switching device shifter.
In addition, the cost of satellite system aspect emission is high, and is actually and can not repairs.
Therefore, consider above-mentioned situation, the present invention relates to a kind of wireless communication networks system, it is made up of a plurality of communication nodes that are positioned on the sub-orbit plane.Each node comprises the device that is used for transmitting and receiving broadband, digital wireless communication signal on a radio communication channel.Signal of communication is through the CDMA bandspread technology modulation.
The device that transmits and receives the radio digital communication signal comprises a plurality of antennas that are used to receive from the more weak signal of communication of information source.The device of the signal of communication decoding that each described antenna is received also is provided, make node can discern information source, antenna and code translator are used to improve the sensitivity of node, make it to detect and receive relative more weak signal of communication, thereby signal of communication can use frequency spectrum uninterruptedly to greatest extent.
Accompanying drawing is described
With reference to the accompanying drawing of the existing preferred form of the present invention, can further understand the present invention, wherein:
Fig. 1 is the schematic diagram of expression communication system of existing preferred form structure according to the present invention.
Fig. 2 is that expression detects and code translator schematic diagram partly.
Preferred embodiment is described
With reference now to Fig. 1,, a system 10 of describing for the 08/100th, No. 037 such as patent application comprises an above ground portion 12 and an aerial part 14.Aerial part 14 can be positioned at the height of 12 to 35 miles of earth tops.
Above ground portion 12 can comprise traditional telephone network 16, and it has branch road and has suitable long range transmission and a receiving system, and for example antenna 20,118 and 138 ground station 18,120 are connected with 140.Above ground portion 12 can also comprise the mobile phone of common type, for example can be by individual 22 or the cell phone that carries of vehicle 24.Antenna 20,188 and 138 is used for sending signals of communication and receiving signal of communication from it to being positioned at sub-track High Altitude Replay Point 28 on 12 to the 35 miles height in earth top.Select this highly to be because it is in weather active belt top, so relay station can not be subjected to the issuable influence of weather.
A plurality of relay stations 28 are preferably arranged, as the last patent application the 08/100th that proposed on July 30th, 1993,037 is described, each relay station comprises that keeps a high-level balloon 32, can be fixed on certain position above the earth to it by using one by the module 56 that instructs that instructs that antenna 58 is connected with terrestrial links antenna 36.
As everyone knows, each relay station 28 comprises that reception is from ground station 20,120 and 140, individual 22 and 122 or the telephone communicating signal of one of vehicle 24 and 124 directly or by another relay station is transmitted into another ground station 120 and 140 to it, the device of individual 122 or vehicle 124 again.The communication channel of being set up can be single worker, duplex or semiduplex.Signal just according to conventional methods, inserts ground cable telephone system by the switch 34,134 and 144 that is fit to and finishes calling once the above ground portion 12 of retrieval system 10.Switch can be any one type that is suitable for analog-and digital-signal of communication.
As everyone knows, a node in each relay station 28 definition communication system, one of each node definition " sub-district " of this system.Each node preferably includes the device that transmits and receives broadband, digital wireless communication signal on radio communication channel.Communication channel bandwidth is more preferably greater than 8MHz.Signal of communication is preferably through the CDMA bandspread technology modulation.
In order to exceed present CDMA, use usable frequency to greatest extent, the sub-district should be smaller, and signal of communication desired signal power should be very low.This will improve the reusability of frequency and reduce interference.But, signal strength signal intensity reduces to make the base station more to be difficult to tracking, some cellular moving.
A detection system of being made up of suitable antenna array 48 and decoder 44 is provided on each relay station.Detection system type and June 5 nineteen ninety-five, the spatial manipulation system class of describing in the FORBES ASAP 125-141 page or leaf seemingly.The signal that each antenna receives in this system handles antenna array.Signal after the decoding can be discerned transmitter and the position thereof in the sub-district.Therefore, even detection system receives the atomic weak signal that may lose usually, also can discern and handle to finish a communication channel it.
When being put into above-mentioned spectrum CDMA on the sub-track plane with the combination that has the detection system of antenna array, its advantage is improved, because it has avoided all shortcomings of ground and satellite system, has kept their advantage simultaneously, for example vertical signal is propagated, thereby has improved the utilance of communication spectrum.And, can reduce power requirement, thereby reduce the weight of node place transmitter.In addition, because modulation technique, the transmitter number can reduce.
Therefore, in the sub-district of certain node definition, can set up the mass communication channel, and can not supervene in the interference problem of factors such as sound, reflection, frequency reuse.
Required higher-wattage requirement when in addition, having avoided this system relevant with satellite communication system.
Estimate that described system with the employing code division multiple access spread spectrum, comprises direct sequence and/or frequency hopping.
Also have, do not specify in detail although be used for the frequency allocation plan of this communication system, should be appreciated that it may be used for ground communication or be used for the allocative decision of satellite communication identical.Equally, those frequencies that are specifically designed to this communication system are within the scope of the invention.
Although described the present invention, to those skilled in the art, obviously can draw other form according to above description according to some form and embodiment.Therefore, the scope of the invention will not be subjected to restriction described above, but be determined by the accessory claim scope.
Claims (36)
1. a wireless communication networks system comprises:
A plurality of communication nodes,
Described node is positioned at a sub-orbit plane at 12 to 35 miles places, earth top,
Each described node is included in radio communication channel and transmits and receives on whole frequency band greater than the broadband of 8Mhz, the device of digital wireless communication signal, and described wireless communication signals divides many yards spread spectrums modulation through sign indicating number,
The described device that is used to transmit and receive described wireless communication signals also comprises a plurality of antennas that are used to receive from the fainter signal of communication of an information source,
Be used for device, make described node can discern described information source the signal interpretation of each described antenna reception,
The sensitivity that described antenna and described code translator are used to improve described node makes it can detect and receive fainter signal of communication, thereby signal of communication can use frequency spectrum uninterruptedly to greatest extent.
2. as the system of claim 1 definition, wherein
Described CDMA bandspread technology is a direct sequence.
3. as the system of claim 1 definition, wherein
Described CDMA bandspread technology is a frequency hopping.
4. as the system of claim 1 definition, wherein
Each described node be fixed in it on earth under the some place.
5. as the system of claim 1 definition, wherein
The described device that is used for transmitting and receiving broadband, digital wireless communication signal on radio communication channel comprises
At least one transmitter and receiver,
Described transmitter and receiver has a plurality of duplex communication channels.
6. as the system of claim 5 definition, wherein,
Described transmitter power is little, and is in light weight.
7. the system as claim 1 definition comprises
Ground communication net and
Be used to connect the device of described wireless communication networks system and described ground communication net.
8. as the system of claim 7 definition, wherein
The described device that is used to connect described wireless communication networks system and described ground communication net comprises switch.
9. as the system of claim 8 definition, wherein
Described switch is digital.
10. as the system of claim 8 definition, wherein
Described switch is simulated.
11. as the system of claim 1 definition, wherein
Described node is by the balloon support.
12. as the system of claim 1 definition, wherein
Described wireless communication frequency is identical with the frequency of distributing to ground communication.
13. as the system of claim 1 definition, wherein
The described device that is used for transmitting and receiving broadband, digital wireless communication signal on radio communication channel comprises
At least one transmitter and receiver,
Described transmitter and receiver has a plurality of simplex channels.
14. as the system of claim 13 definition, wherein
Described transmitter power is little, and is in light weight.
15. as the system of claim 1 definition, wherein,
The described device that is used for transmitting and receiving broadband, digital wireless communication signal on radio communication channel comprises
At least one transmitter and receiver,
Described transmitter and receiver has a plurality of half-duplex communication channel.
16. as the system of claim 16 definition, wherein
Described transmitter power is little, and is in light weight.
17. as the system of claim 1 definition, wherein
Described wireless communication frequency is identical with the frequency of distributing to rail communication.
18. as the system of claim 1 definition, wherein
Described wireless communication frequency is used by described communication system specially.
19. carrying out method of wireless communication may further comprise the steps:
A plurality of communication nodes are provided, network of described node definition,
Place described node on the sub-track plane at about 12 to 35 miles places, side on earth;
For described each node is provided for transmitting and receiving on whole frequency band greater than the broadband of 8Mhz, the device of digital wireless communication signal at radio communication channel,
For described each node is provided for receiving a plurality of antennas from the fainter digital wireless communication signal of an information source,
Modulate described signal of communication by CDMA bandspread technology,
Described signal of communication decoding to described each antenna receives makes described node can discern described information source,
The sensitivity that described antenna and described code translator are used to improve described node makes them can detect and receive described fainter signal of communication, thereby signal of communication can use frequency spectrum uninterruptedly to greatest extent.
20. as the method for claim 19 definition, wherein
Described CDMA bandspread technology is by the direct sequence adjustment.
21. as the method for claim 19 definition, wherein
Described CDMA bandspread technology is by the frequency hopping adjustment.
22. as the method for claim 19 definition, wherein
Described each node be fixed in it on earth under the some place.
23. as the method for claim 19 definition, wherein
The described step that transmits and receives bandwidth, digital wireless communication signal on radio communication channel comprises:
The step of a plurality of transmitter and receivers is provided,
Described each transmitter has a plurality of duplex communication channels.
24. as the method for claim 22 definition, wherein
Described transmitter power is little, and is in light weight.
25. the method as claim 19 definition comprises step
A ground communication net is provided,
Connect described wireless communication networks system and described ground communication net.
26. the method as claim 24 definition comprises step:
Be provided for connecting the switch of described wireless communication networks system and described ground communication net.
27. as the method for claim 25 definition, wherein
Described switch is digital.
28. as the method for claim 25 definition, wherein
Described switch is simulated.
29. the method as claim 19 definition comprises step
Support described node by balloon.
30. as the method for claim 19 definition, wherein
Described wireless communication frequency is identical with the frequency of distributing to ground communication.
31. as the method for claim 19 definition, wherein
The described step that transmits and receives broadband, digital wireless communication signal on radio communication channel comprises
The step of at least one transmitter and a receiver is provided,
Described transmitter and receiver has a plurality of simplex channels.
32. as the method for claim 31 definition, wherein
Described transmitter power is little, and is in light weight.
33. as the method for claim 20 definition, wherein
The described step that transmits and receives broadband, digital wireless communication signal on radio communication channel comprises:
The step of at least one transmitter and a receiver is provided,
Described transmitter and receiver has a plurality of half-duplex communication channel.
34. as the method for claim 33 definition, wherein
Described transmitter power is little, and is in light weight.
35. as the method for claim 20 definition, wherein
Described wireless communication frequency is identical with the frequency of distributing to rail communication.
36. as the method for claim 20 definition, wherein
Described wireless communication frequency is used by described communication system specially.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48821395A | 1995-06-07 | 1995-06-07 | |
| US08/488231 | 1995-06-07 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96196073A Division CN1192832A (en) | 1995-06-07 | 1996-06-07 | High efficiency sub-orbital high altitude telecommunications system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1684393A true CN1684393A (en) | 2005-10-19 |
Family
ID=23938796
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96196073A Pending CN1192832A (en) | 1995-06-07 | 1996-06-07 | High efficiency sub-orbital high altitude telecommunications system |
| CNA2004100432092A Pending CN1684393A (en) | 1995-06-07 | 1996-06-07 | High efficiency sub-orbital high altitude telecommunications system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96196073A Pending CN1192832A (en) | 1995-06-07 | 1996-06-07 | High efficiency sub-orbital high altitude telecommunications system |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP0830753A4 (en) |
| JP (1) | JPH11513203A (en) |
| CN (2) | CN1192832A (en) |
| AR (1) | AR002431A1 (en) |
| BR (1) | BR9609018B1 (en) |
| CA (1) | CA2254776A1 (en) |
| DE (1) | DE19681416T1 (en) |
| ES (1) | ES2137887B1 (en) |
| FR (1) | FR2735306B1 (en) |
| IT (1) | IT1284148B1 (en) |
| PL (1) | PL181701B3 (en) |
| RU (1) | RU2227371C2 (en) |
| TW (1) | TW431080B (en) |
| UA (1) | UA59339C2 (en) |
| WO (1) | WO1996041429A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7203491B2 (en) | 2001-04-18 | 2007-04-10 | Space Data Corporation | Unmanned lighter-than-air safe termination and recovery methods |
| BRPI1100091A2 (en) * | 2011-01-14 | 2019-02-19 | Bruno Avena De Azevedo | Floating cells |
| RU2454796C1 (en) * | 2011-04-25 | 2012-06-27 | Открытое акционерное общество Омское производственное объединение "Радиозавод им. А.С. Попова" (РЕЛЕРО) | Resettable autonomous radio signal retransmitter |
| US9424752B1 (en) * | 2012-12-26 | 2016-08-23 | Google Inc. | Methods and systems for performing fleet planning based on coarse estimates of regions |
| US9195938B1 (en) | 2012-12-27 | 2015-11-24 | Google Inc. | Methods and systems for determining when to launch vehicles into a fleet of autonomous vehicles |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2082995B (en) * | 1980-08-27 | 1984-02-08 | Mcnulty John Anthony | Airborne relay station |
| US5138631A (en) * | 1989-12-21 | 1992-08-11 | Gte Spacenet Corporation | Satellite communication network |
| US5073900A (en) * | 1990-03-19 | 1991-12-17 | Mallinckrodt Albert J | Integrated cellular communications system |
| US5206882A (en) * | 1991-03-11 | 1993-04-27 | Schloemer Gerald R | System for and method of creating and assigning address codes in a cellular spread spectrum system |
| US5504936A (en) * | 1991-04-02 | 1996-04-02 | Airtouch Communications Of California | Microcells for digital cellular telephone systems |
| ATE185659T1 (en) * | 1993-07-30 | 1999-10-15 | Int Multi Media Corp | SUB-ORBITAL WITH HIGHER ALTITUDE COMMUNICATION ARRANGEMENT |
-
1996
- 1996-06-07 EP EP96922454A patent/EP0830753A4/en not_active Ceased
- 1996-06-07 CN CN96196073A patent/CN1192832A/en active Pending
- 1996-06-07 DE DE19681416T patent/DE19681416T1/en not_active Withdrawn
- 1996-06-07 CA CA002254776A patent/CA2254776A1/en not_active Abandoned
- 1996-06-07 AR ARP960103092A patent/AR002431A1/en unknown
- 1996-06-07 RU RU98100752/09A patent/RU2227371C2/en not_active IP Right Cessation
- 1996-06-07 TW TW085106860A patent/TW431080B/en not_active IP Right Cessation
- 1996-06-07 PL PL96324036A patent/PL181701B3/en unknown
- 1996-06-07 CN CNA2004100432092A patent/CN1684393A/en active Pending
- 1996-06-07 JP JP9502254A patent/JPH11513203A/en active Pending
- 1996-06-07 IT IT96RM000405A patent/IT1284148B1/en active IP Right Grant
- 1996-06-07 FR FR9607105A patent/FR2735306B1/en not_active Expired - Fee Related
- 1996-06-07 WO PCT/US1996/010230 patent/WO1996041429A1/en not_active Application Discontinuation
- 1996-06-07 ES ES009750008A patent/ES2137887B1/en not_active Expired - Fee Related
- 1996-06-07 BR BRPI9609018-9A patent/BR9609018B1/en not_active IP Right Cessation
- 1996-07-06 UA UA98010119A patent/UA59339C2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ITRM960405A0 (en) | 1996-06-07 |
| EP0830753A1 (en) | 1998-03-25 |
| FR2735306A1 (en) | 1996-12-13 |
| FR2735306B1 (en) | 2003-10-03 |
| BR9609018B1 (en) | 2009-12-01 |
| BR9609018A (en) | 1999-07-06 |
| PL324036A1 (en) | 1998-05-11 |
| AU702991B2 (en) | 1999-03-11 |
| AU6332496A (en) | 1996-12-30 |
| RU2227371C2 (en) | 2004-04-20 |
| IT1284148B1 (en) | 1998-05-08 |
| TW431080B (en) | 2001-04-21 |
| EP0830753A4 (en) | 2002-01-02 |
| CN1192832A (en) | 1998-09-09 |
| DE19681416T1 (en) | 1998-10-01 |
| AR002431A1 (en) | 1998-03-11 |
| ITRM960405A1 (en) | 1997-12-07 |
| ES2137887A1 (en) | 1999-12-16 |
| WO1996041429A1 (en) | 1996-12-19 |
| CA2254776A1 (en) | 1996-12-19 |
| ES2137887B1 (en) | 2000-08-16 |
| UA59339C2 (en) | 2003-09-15 |
| PL181701B3 (en) | 2001-09-28 |
| JPH11513203A (en) | 1999-11-09 |
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