CN1961501A - Systems and methods for space-based reuse of terrestrial cellular frequency spectrum - Google Patents
Systems and methods for space-based reuse of terrestrial cellular frequency spectrum Download PDFInfo
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Abstract
A space-based component, such as a satellite, is configured to use a terrestrial cellular/PCS frequency for communication with a wireless terminal, with a terrestrial base station and/or with a terrestrial gateway. Terrestrial cellular/PCS frequencies also may be used for terrestrial communications by terrestrial base stations and/or radioterminals.
Description
The cross reference of related application
The rights and interests of the provisional application 60/573253 that the application requires to propose on May 21st, 2004 is entitled as " terrestrial cellular frequency spectrum based on the space system and method for usefulness again " (Systems and Methods for Space-BasedReuse of Terrestrial Cellular Frequency Spectrum), by reference that the disclosure of this application is all incorporated herein thus, just look like to be very full in this article equally.
Invention field
The present invention relates to radio terminal communication system and method, and more particularly, relate to terrestrial cellular and satellite cellular radio Terminal communication system and method.
Background of invention
The satelline radio Terminal communication system is widely used in radio terminal with method and communicates by letter.Satelline radio Terminal communication system and method generally adopt at least one to be configured to the assembly based on the space that communicates with wireless mode and a plurality of satellite radio electric terminals, as one or more satellites.
Satelline radio Terminal communication system or method can utilize covering that the individual antenna directional diagram (wave beam) in the whole zone of service is provided by system.Perhaps, in cellular satellite radio terminal communication system and method, a plurality of antenna patterns (wave beam or sub-district) are provided, wherein each antenna pattern can serve in the whole service area basically the unique geography zone with common service in whole satellite coverage.Therefore, in satellite-based cellular system and method, can implement to conventional ground cellular radio terminal system and method in the similar honeycomb ceramics architecture used.Satellite communicates by two-way communication path and wireless terminal generally speaking, by down link or forward link the radio terminal signal of communication is delivered to radio terminal from satellite, and the radio terminal signal of communication is delivered to satellite from radio terminal by up link or return link.
The global design of cellular satellite radio terminal system and method and be operating as those skilled in the art and know, thereby need not to further describe in this article.In addition, when this paper used, term " radio terminal " comprising: have or do not have honeycomb and/or satellite radio electric terminals that multirow shows; PCS Personal Communications System (PCS) terminal that radio terminal can be combined with data processing, fax and/or its communication ability; The PDA(Personal Digital Assistant) that can comprise radio-frequency (RF) transceiver and/or beep-pager, the Internet/intranet access, Web browser, organizer, calendar and/or global positioning system (GPS) receiver; And/or comprise conventional above-knee and/or the palmtop computer or the miscellaneous equipment of radio-frequency (RF) transceiver.Radio terminal also can be described as " radio telephone ", " wireless terminal " or simply is called " terminal " at this paper.When this paper uses, term " radio telephone ", " radio terminal ", " wireless terminal " and/or " terminal " also comprise any other radiation user unit/source, become when they can have or fixing geographical coordinate and/or can be portable, portable, be installed in (aviation, sea or land type) delivery vehicle, and/or be positioned at and/or be configured to local operation and/or on one or more ground and/or ground external position, operate with distributed way.
Ground network can be by using on ground and/or strengthening availability, efficient and/or the economic feasibility of cellular satellite radio terminal system with in the frequency band of distributing to cellular satellite radio terminal system at least some again.Specifically, be known that because satellite-signal may be stopped by skyscraper and/or possibly can't penetrate building, so cellular satellite radio terminal system may be difficult to serve reliably densely populated zone.Therefore, in this type of zone, may underuse or not utilize satellite frequency spectrum.Use and/or again with reducing or eliminating these potential problems on the ground of satellite system frequency.
In addition, the capacity of whole system can use by the ground frequency of introducing the satellite system frequency and/or again with increasing, this is to use and/or use and may and/or use much intensive again than the use of the system that has only satellite because of ground frequency.In fact, in the place that may need most capacity, can improve capacity in promptly densely populated city/industry/commerce area.Therefore, it is more feasible economically that whole system can become, and this is because its may can be more effectively and serves bigger user's basic group reliably.
An example of the ground use of satellite frequency has been described in authorizing the United States Patent (USP) 5937332 that is entitled as " satellite telecommunications repeater and re-transmission method " (Satellite Telecommunications Repeaters and RetransmissionMethods) of present inventor Karabinis, by reference that its disclosure is all incorporated herein thus, just look like to be very full in this article equally.As described therein, the satellite telecommunications repeater that provides receives, amplifies and launches again from the down link signal of satellite reception at this machine, be increased near the active downlink surplus the satellite telecommunications repeater thus, and allow to increase the penetrability that up link and down link signal enter building, plant, haulage vehicle and can reduce other object of link margin.Portable and non-portable repeater is provided.Consult the summary of United States Patent (USP) 5937332.
May save cost and/or attractive aesthetically by using on ground and/or use again for ground and satellite communication to same Landsat band of small part and the satellite radio electric terminals that is used for satelline radio terminal system or method that uses substantially the same air interface to have the ground communication ability.All Thuraya as everyone knows, Iridium and/or Globalstar dual mode satellite/conventional dual band/dual mode radio terminal substitutes such as terrestrial wireless electric terminals make some assemblies double (this be because between satellite and ground communication different frequency band and/or air interface protocols), and this causes the increase of cost, size and/or the weight of radio terminal.Consult the United States Patent (USP) 6052560 that is entitled as " utilizing the satellite system of multiple air-interface standard and the method for the same standard of employing " (Satellite System Utilizing a Plurality of AirInterface Standards and Method Employing Same) of authorizing present inventor Karabinis.
The satelline radio Terminal communication system and the method for the ground use that can adopt satellite frequency have been described:the United States Patent (USP) 6684057 that is entitled as " ground of cellular satellite frequency spectrum is the system and method for usefulness (Systems and Methods for TerrestrialReuse of Cellular Satellite Frequency Spectrum) again " of authorizing Karabinis in following United States Patent (USP) and application; Authorize 6785543 of being entitled as of Karabinis " filter (Filtersfor Combined Radiotelephone/GPS Terminals) that is used for combined wireless telephone/GPS terminal "; Authorize being entitled as of Karabinis " wireless communication system and the method (Wireless Communications Systems and Methods UsingSatellite-Linked Remote Terminal Interface Subsystems) of using the remote terminal interface subsystem of satellite link " 6856787; Authorize being entitled as of people such as Karabinis " using signal attenuation and/or obstruction; Frequency dynamic to distribute and/or satellite-ground frequency of the lagging behind integrated or autonomous system and the method (Integratedor Autonomous System and Method of Satellite-Terrestrial FrequencyReuse Using Signal Attenuation and/or Blockage, Dynamic Assignmentof Frequencies and/or Hysteresis) of usefulness again " 6859652; And authorize being entitled as of the people such as Dutta " be used for based on the space with switch between radio terminal ground is communicated by letter and be used for radio terminal monitor ground again the satellite frequency of usefulness to reduce the system and method (Systems and Methods for Handover Between Space Based andTerrestrial Radio terminal Communications, and For MonitoringTerrestrially Reused Satellite Frequencies At a Radio terminal to ReducePotential Interference) of potential interference " 6879829; And the U.S. Patent application US2003/0054761 of the announcement of being entitled as of Karabinis " ground that is used for satellite frequency is the space protection frequency band of usefulness (Spatial Guardbands for TerrestrialReuse of Satellite Frequencies) again "; People's such as Karabinis the US 2003/0054814 that is entitled as " being used to monitor the ground system and method (Systems and Methods for MonitoringTerrestrially Reused Satellite Frequencies to Reduce PotentialInterference) of satellite frequency to reduce potential interference of usefulness again "; People's such as Karabinis the US 2003/0073436 that is entitled as " being used to monitor ground spare system and the method (AdditionalSystems and Methods for Monitoring Terrestrially Reused SatelliteFrequencies to Reduce Potential Interference) of satellite frequency to reduce potential interference of usefulness again "; The US 2003/0054762 that is entitled as " multiband/multi-mode satellite radiotelephone communications systems and method (Multi-Band/Multi-Mode Satellite Radiotelephone CommunicationsSystems and Methods) " of Karabinis; The US 2003/0224785 that is entitled as " system and method (Systemsand Methods for Reducing Satellite Feeder Link Bandwidth/Carriers InCellular Satellite Systems) that is used for reducing satellite feeder link bandwidth/carrier wave " of Karabinis at cellular satellite system; People's such as Karabinis the US 2002/0041575 that is entitled as " the satellite ground frequency reuse of coordination (Coordinated Satellite-TerrestrialFrequency Reuse) "; People's such as Karabinis the US2003/0068978 that is entitled as " network architecture based on the space (Space-Based NetworkArchitectures for Satellite Radiotelephone Systems) that is used for satellite radiotelephone system "; The US 2003/0153308 that is entitled as " ground of satellite frequency is the staggered subregion of usefulness (Staggered Sectorization for Terrestrial Reuse of Satellite Frequencies) again " of Karabinis; And being entitled as of Karabinis US 2003/0054815 of " being used to revise the satellite antenna element pattern " with the ground of the response satellite frequency method and system of usefulness (Methods andSystems ror Modifying Satellite Antenna Cell Patterns In Response toTerrestrial Reuse of Satellite Frequencies) again, all these are transferred assignee of the present invention, by reference that all its disclosures are all incorporated herein thus, just look like to be very full in this article equally.
Some satelline radio Terminal communication systems and method can be adopted as and communicate with radio terminal and use the satellite of a plurality of frequency bands.For example, the U.S. Patent application US 2003/0054762 of above-cited Karabinis has described satelline radio terminal system and the communication means that comprises based on the assembly in space, this arrangement of components for the satellite coverage that is divided into satellite cell in radio terminal communicate.Should be based on the arrangement of components in space for to communicate by first radio terminal in first frequency band and/or first air interface and first satellite cell, and communicate by second radio terminal in second frequency band and/or second air interface and first or second satellite cell.Ancillary terrestrial network also is provided, this network configuration for by first frequency band basically and/or basically first air interface and first radio terminal carry out ground communication, and by second frequency band basically and/or second air interface and second radio terminal carry out ground communication basically.Consult the summary of U.S. Patent application US 2003/0054762.
Summary of the invention
The wireless communications method of example embodiment directly communicates between based on the assembly in space and radio terminal by terrestrial cellular/PCS frequency according to the present invention.In other embodiments, also can provide the direct communication between ground base station and the radio terminal by terrestrial cellular/PCS frequency.In other embodiment that also has, also can provide ground base station and based on the direct communication between the assembly in space by terrestrial cellular/PCS frequency.Combination and the sub-portfolio of these embodiment also can be provided.
Other embodiments of the invention allow to use terrestrial cellular/PCS frequency based on the assembly in space.In other embodiments, terrestrial cellular/PCS frequency is used for by radio terminal and directly communicates based on the assembly in space.In other embodiment that also has, terrestrial cellular/PCS frequency is used for by ground base station and directly communicates based on the assembly in space.Combination and the sub-portfolio of these embodiment also can be provided.
The wireless communication system of example embodiment comprises and is configured to the assembly based on the space that directly communicates by terrestrial cellular/PCS frequency and radio terminal according to the present invention.In other embodiments, also provide and be configured to the ground base station that directly communicates by terrestrial cellular/PCS frequency and radio terminal.In other embodiments, ground base station be configured to by terrestrial cellular/PCS frequency with directly communicate based on the assembly in space.Combination and the sub-portfolio of these embodiment also can be provided.
At last, in other example embodiment of wireless communication system, based on the arrangement of components in space for using terrestrial cellular/PCS frequency.In other embodiments, radio terminal be configured to by terrestrial cellular/PCS frequency with directly communicate based on the assembly in space.In other embodiment that also has, radio terminal also is configured to directly communicate by terrestrial cellular/PCS frequency and ground base station.In other embodiment that also has, ground base station be configured to by terrestrial cellular/PCS frequency with directly communicate based on the assembly in space.Combination and the sub-portfolio of these embodiment also can be provided.
Description of drawings
Fig. 1-the 3rd is according to the block diagram of the system, method and/or the assembly that use based on the space of the terrestrial cellular frequency spectrum of various embodiments of the invention.
Describe in detail
Now with reference to accompanying drawing particular exemplary embodiment of the present invention is described.Yet the present invention can be presented as many different forms, thereby should not be considered as being limited to embodiment as herein described.On the contrary, providing of these embodiment makes present disclosure will become detailed and complete, and will fully pass on scope of the present invention to those skilled in the art.In the accompanying drawings, similarly label is represented similar elements.To understand, when an element was described to " connection ", " coupling " or " response " another element, it can directly connect, is coupled or responds described another element, perhaps can have intermediary element.In addition, " connection ", " coupling " or " response " can comprise when this paper uses with wireless mode connection, coupling or response.
Only be used to describe special embodiment at term used herein, and be not intended to limit the present invention.When this paper uses,, otherwise also will comprise plural form unless singulative offers some clarification in addition.Also will understand, term " comprises " existence of pointing out described characteristic, integral body, step, operation, element and/or assembly when using in this manual, and does not get rid of existence or add one or more other characteristics, integral body, step, operation, element, assembly and/or its combination.
Unless otherwise prescribed, otherwise all terms used herein (comprising technology and scientific terminology) have the common identical implication of understanding with those skilled in the art in the invention.Also will understand, be interpreted as having the implication consistent such as the terms such as those terms that define in the common dictionary with its implication in the context of association area and present disclosure, unless and clearly be defined in this article on the idealized or too formal meaning and understand, otherwise, will on idealized or too formal meaning, not understand.
To understand, though term first and second can be used to describe various elements at this paper, these elements should not be subjected to the restriction of these terms.These terms only are used to distinguish an element and another element.Therefore, lecture under the situation of content not breaking away from the present invention, the first following radio terminal can be described as second radio terminal, and similarly, second radio terminal can be described as first radio terminal.When this paper uses, term " and/or " comprise the arbitrary of one or more listed associated item and all combinations.Symbol "/" also as " and/or " shorthand.
In addition, when this paper used, it is overlapping on frequency basically that " substantially the same " frequency band means two or more frequency bands of comparison, but may have some Non-overlapping Domain, for example, and in frequency band side.It is similar but need not identical that " substantially the same " air interface means two or more air interfaces of comparison.The different characteristic that in an air interface (that is satellite air interface), exists some may exist between for example ground and satellite communication environment with explanation and/or adaptation with respect to the difference of another air interface (that is ground air interface).For example, compare with the vocoder rate that can be used for ground communication, different vocoder rate can be used for satellite communication (promptly, for ground communication, can be that about 9kbps is to 13kbps with compress speech (" speech coding "), and, for example can use 2kbps) to the vocoder rate of 4kbps for satellite communication; Compare with the coding that can be used for ground communication, interleave depth and/or spreading code (that is, walsh code, long code and/or frequency hopping code), different forward error correction codings, different interleave depths and/or different spreading codes also can for example be used for satellite communication.
Some embodiments of the present invention allow terrestrial cellular/PCS frequency to be used for the communication based on the space.When this paper used, the terrestrial cellular frequency range was 824MHz-849MHz and 869MHz-894MHz in the U.S., and ground PC S frequency range is 1850MHz-1910MHz and 1930MHz-1990MHz in the U.S..The terrestrial cellular frequency range can be 890MHz-915MHz and the 930MHz-960MHz that is used for gsm system, and other country can have its oneself terrestrial cellular/PCS frequency range.
In according to one or more patterns in many patterns of various embodiments of the invention, terrestrial cellular/PCS frequency and/or any other can be used for communication based on the space by assembly, ground base station and/or the radio terminal based on the space through authorizing and/or being used for frequency (being generically and collectively referred to as " honeycomb/PCS frequency " hereinafter) in conjunction with the ground communication of any system (honeycomb/PCS and/or other).For example, the communication that given terrestrial cellular/PCS frequency is used for based on the space can be formula of monopolizing or shared formula.Specifically, in certain embodiments, can give assembly or ground base station with terrestrial cellular/PCS frequency (or frequency band) assignment, make this frequency (or frequency band) only use by this assembly or this ground base station based on the space with exclusive mode based on the space.This type of assignment causes " the frequency band segmentation " of at least a portion in terrestrial cellular/PCS frequency band.In other embodiments, terrestrial cellular/PCS frequency makes identical frequency can be used for communication and the ground communication based on the space simultaneously by based on the assembly in space and/or terrestrial cellular/pcs system usefulness again.Disturb minimizing and/or other technology to can be used for reducing because again with the interference that causes.The monopolizing assignment and/or share of given terrestrial cellular/PCS frequency (or frequency band) again with can on temporary transient and/or nonvolatil basis, carrying out.Therefore, when this paper used, term " use " had been considered to have the frequency band segmentation of permanent and/or behavioral characteristics and/or use when being applied to terrestrial cellular/PCS frequency (or the continuous or discrete frequency band of possibility).Also will understand, term " ground " means " not in the space " when this paper uses, and can comprise based on land, sea and/or aviation type device.
Fig. 1 illustrates example embodiment of the present invention.As shown in Figure 1, directly communicate with radio terminal 20 by the link 30 that comprises terrestrial cellular/PCS frequency such as the assembly of such as satellite 10 grades based on the space.It will be apparent to one skilled in the art that in other embodiment of Fig. 1, terrestrial cellular/PCS frequency can be used for other purposes based on the assembly in space, for example, communicate with gateway such as satellite 10 grades.
Fig. 2 illustrates other embodiments of the invention, wherein, directly communicates with ground base station 60 by the link 80 that comprises honeycomb/PCS frequency such as the assembly of satellite 50 grades based on the space.Also can between ground base station 60 and radio terminal 70, directly communicate by the link 90 that comprises terrestrial cellular/PCS and/or satellite frequency.In the embodiment of Fig. 2, when the link 90 between radio terminal 70 and the ground base station 60 comprises honeycomb/PCS frequency, can with exclusive mode with given honeycomb/PCS frequency assignment give between satellite 50 and the ground base station 60 link 80 and/or can be by using given honeycomb/PCS frequency again based on the assembly 50 in space and the link 90 between the link 80 between the ground base station 60 and radio terminal 70 and the ground base station 60.Below in conjunction with Fig. 3 the employing specific embodiment of usefulness is again described.To understand, ground base station 60 can permanently be fixed on the Special geography position, can be portable or be installed on the mobile delivery vehicle, as at sea, aviation or land type move on the delivery vehicle.
Some embodiments of the present invention allow to comprise that one or more auxiliary space networks (ANC) such as auxiliary space assemblies (ASC) such as satellites use the terrestrial cellular frequency.When in the explanation of Fig. 3, using, the terrestrial cellular frequency comprise the PCS frequency and/or any other through authorizing and/or be used for the frequency of ground communication.Use the ASN of terrestrial cellular frequency to distribute to terrestrial cellular radio terminal system and improve availability, efficient and/or the economic feasibility of terrestrial cellular radio terminal system with at least some that are used for based on the frequency band of the communication in space by use.Specifically, be known that because the infrastructure cost that may be associated with underpopulated zone may be big, so terrestrial cellular radio terminal system may be difficult to serve reliably underpopulated zone.Correspondingly, the real whole nation of ground-based cellular systems and/or provincialism cover and may be difficult to realize.The use based on the space of ground-based cellular systems frequency can reduce or eliminate these potential problems.
In addition, use, particularly in the zone that may suppress the ground infrastructure deployment economically, introduce, can increase the capacity of whole system by the frequency of introducing the ground system frequency based on the space.Therefore, it is more feasible economically that ground-based cellular systems can become, and/or since its may can be more effectively and serve bigger user's basic group reliably and more attractive the user.
The technology of describing in the patent of quoting in the above that transfers the assignee of the present invention and the patent application of announcement can be used in combination ground/satellite system, and this combination ground/satellite system is used terrestrial cellular frequency (being used for the communication based on the space) in the space.Correspondingly, by using honeycomb frequency rather than all using satellite frequency, can be modified in system, method and/or the assembly described in above-cited patent and/or the patent application.In addition, can be modified in system, method and/or the assembly described in other existing or patent, patent application, technical publications or other disclosure in the future in the space, to use honeycomb frequency.To understand, according to embodiments of the invention, complete ASN or its assembly, such as filter, amplifier, antenna, frequency mixer etc., can carry out suitable modification so that operate in frequency response/characteristic aspect, thereby allow to use terrestrial cellular/PCS frequency to carry out communication based on the space with terrestrial cellular/PCS frequency.Also will understand, the element/characteristic/assembly/parameter that is configured to use the radio terminal that the frequency of Landsat band and assembly based on the space communicate also can be basically as the element/characteristic/assembly/parameter of the radio terminal that is configured to use the frequency of honeycomb/PCS frequency band and assembly to communicate based on the space.For example, vocoder can be more low rate vocoder (promptly, 2.4kbps vocoder), antenna oscillator can be the antenna oscillator of high-gain and/or circuit polarization more, and/or compare with respective element/characteristic/assembly/parameter that radio terminal can be used for carrying out ground communication, the max power constraint of power amplifier can higher (that is, exceeding 3dB).
Correspondingly, use the honeycomb/PCS wireless network of honeycomb/PCS frequency band, no matter whether exist, such as those wireless networks of selling by Verizon, Cingular, Nextel etc. at present, all can dispose the ASN that comprises at least one satellite, and dispose above-mentioned ASN and use at least one frequency of this honeycomb/PCS network that service is provided.The user of honeycomb/PCS network can obtain the real whole nation/area/global covering through satellite thus.
Fig. 3 be according to the terrestrial cellular frequency spectrum of various embodiments of the invention based on the space block diagram of the system and method for usefulness again.As shown in Figure 3, conventional cellular network 100 adopts a plurality of sub-districts 110, and each sub-district adopts one or more base stations 120 to use one or more terrestrial cellular frequency F
TCommunicate with one or more radio terminals 130.It will be apparent to one skilled in the art that generally and in cellular network 100, adopt than the more sub-district 110 shown in Fig. 3, base station 120 and radio terminal 130.In addition, for simplicity's sake, the infrastructure of not shown cellular network 100.The design of terrestrial cellular networks 100 is known by those skilled in the art, thereby need not to further describe at this paper.
Also as shown in Figure 3, adopt at least one terrestrial cellular frequency F ' of use
TAt least one ASC 210 and the ASN 200 of at least one gateway 220 can be used for communicating with at least some radio terminals 130.In certain embodiments, use the part of substantially the same ground frequency band or ground frequency band, and in other embodiments, identical ground frequency band is used for communication based on the space by ASN200.Therefore, the ground frequency that is used by ASN is expressed as F '
TIn certain embodiments, terrestrial cellular frequency F '
TAlso can be used for communicating by letter between ASC 210 and the gateway 220.In other embodiments, ASN 210 and gateway 220 can use other (non-terrestrial cellular) frequency to communicate.In other embodiment that still has, as described in conjunction with Fig. 2, communicating by letter between ground base station 120 and the ASC 210 can be used at least one terrestrial cellular frequency F '
TCarry out.As shown in Figure 3, from can overlap at least coverage of terrestrial cellular networks 100 of the satellite coverage 230 of ASC 210.In certain embodiments, these coverages can be superimposed, and in other embodiments, whole terrestrial cellular networks 100 can be included in the satellite coverage 230.
Also as shown in Figure 3, in the overlapping region between terrestrial cellular networks 100 and satellite coverage 230, can use at least one terrestrial cellular frequency F ' such as radio terminals such as radio terminal 130a
TCommunicate with ASN 200, thereby allow some capacity of terrestrial cellular networks are unloaded to ASN 200.In other embodiments, can continue to carry out ground communication with base station 120 such as radio terminals such as radio terminal 130b in the overlapping region, this base station is associated with terrestrial cellular networks 100.In addition, outside the overlapping region, radio terminal 120c can use at least one ground frequency F '
TCommunicate with ASN 200.
Also will understand, in other embodiments, a plurality of cellular networks 100 can be integrated with ASN 200, and ASN 200 can be configured to the radio terminal of serving a plurality of cellular networks 100 respectively from least one frequency of each respective cell network 100 integrated with it by using.At last, also will understand, can come the various embodiment of constitutional diagram 1-3 with each and the mode of combination and sub-portfolio according to other embodiments of the invention.
In drawing and description, embodiments of the invention are disclosed, though and adopted specific term, just on general and descriptive meaning, use them, be not to limit, scope of the present invention is set forth in the claims of enclosing.
Claims (20)
1. wireless communications method comprises:
Directly communicate between by terrestrial cellular/PCS frequency based on the assembly in space and radio terminal.
2. the method for claim 1 also comprises:
Directly communicate between ground base station and described radio terminal by terrestrial cellular/PCS frequency.
3. the method for claim 1 also comprises
Directly communicate between ground base station and described assembly by terrestrial cellular/PCS frequency based on the space.
4. method as claimed in claim 2 also comprises:
Directly communicate between described ground base station and described assembly by terrestrial cellular/PCS frequency based on the space.
5. wireless communications method comprises:
Use terrestrial cellular/PCS frequency by assembly based on the space.
6. wireless communications method comprises:
Use terrestrial cellular/PCS frequency and assembly directly to communicate by radio terminal based on the space.
7. wireless communications method comprises:
Use terrestrial cellular/PCS frequency and assembly directly to communicate by ground base station based on the space.
8. wireless communication system comprises:
Be configured to the assembly that directly communicates by terrestrial cellular/PCS frequency and radio terminal based on the space.
9. wireless communication system as claimed in claim 8 also comprises:
Be configured to the ground base station that directly communicates by terrestrial cellular/PCS frequency and described radio terminal.
10. wireless communication system as claimed in claim 9, wherein said ground base station also are configured to directly communicate by terrestrial cellular/PCS frequency and described assembly based on the space.
11. wireless communication system as claimed in claim 8 also comprises:
Be configured to by terrestrial cellular/PCS frequency and the described ground base station that directly communicates based on the assembly in space.
12. wireless communication system as claimed in claim 8 and is configured to combine with the described radio terminal that directly communicates based on the assembly in space by terrestrial cellular/PCS frequency.
13. wireless communication system as claimed in claim 9 and is configured to combine with the described radio terminal that directly communicates based on the assembly and the described ground base station in space by terrestrial cellular/PCS frequency.
14. a wireless communication system comprises:
Be configured to use the assembly based on the space of terrestrial cellular/PCS frequency.
15. a wireless communication system comprises:
Be configured to by terrestrial cellular/PCS frequency and the radio terminal that directly communicates based on the assembly in space.
16. wireless communication system as claimed in claim 15, wherein said radio terminal also are configured to directly communicate by terrestrial cellular/PCS frequency and ground base station.
17. a wireless communication system comprises:
Be configured to by terrestrial cellular/PCS frequency and the ground base station that directly communicates based on the assembly in space.
18. wireless communication system as claimed in claim 17, wherein said ground base station also are configured to directly communicate by terrestrial cellular/PCS frequency and radio terminal.
19. a wireless communication system comprises:
Be configured to the terrestrial cellular networks that communicates by cellular band and a plurality of radio terminal; And
Be configured to the auxiliary space network that communicates by to the described terrestrial cellular frequency band of small part and at least some described radio terminals.
20. a wireless communications method comprises:
Communicate between terrestrial cellular networks and a plurality of radio terminal by cellular band; And
By between auxiliary space network and at least some described radio terminals, communicating to the described terrestrial cellular frequency band of small part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57325304P | 2004-05-21 | 2004-05-21 | |
| US60/573,253 | 2004-05-21 | ||
| US11/131,044 | 2005-05-17 |
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| Publication Number | Publication Date |
|---|---|
| CN1961501A true CN1961501A (en) | 2007-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580016046 Pending CN1961501A (en) | 2004-05-21 | 2005-05-18 | Systems and methods for space-based reuse of terrestrial cellular frequency spectrum |
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Application publication date: 20070509 |