CN101129000A - Satellites using inter-satellite links to create indirect feeder link paths - Google Patents
Satellites using inter-satellite links to create indirect feeder link paths Download PDFInfo
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- CN101129000A CN101129000A CNA2006800056566A CN200680005656A CN101129000A CN 101129000 A CN101129000 A CN 101129000A CN A2006800056566 A CNA2006800056566 A CN A2006800056566A CN 200680005656 A CN200680005656 A CN 200680005656A CN 101129000 A CN101129000 A CN 101129000A
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Abstract
Methods of providing a feeder link between a first substantially geo-stationary satellite and a satellite gateway include establishing a communications link between the satellite gateway and a second substantially geo-stationary satellite, establishing an inter-satellite communications link between the first substantially geo-stationary satellite and the second substantially geo-stationary satellite, and communicating between the first substantially geo-stationary satellite and the satellite gateway via the inter-satellite communications link and the communications link. A satellite communications system includes first and second substantially geo-stationary satellites configured to establish an inter-satellite communications link therebetween, and a satellite gateway configured to establish a direct feeder link with one of the first and second substantially geo-stationary satellites and to establish an indirect feeder link with the other of the first and second substantially geo-stationary satellites using the inter-satellite communications link and the direct feeder link.
Description
The reference of related application
The application requires the provisional application submitted on February 22nd, 2005 number 60/655,148 interests and priority, its title is " Satellites Using Inter-Satellite Linksto Create Inidirect Feeder Link Paths ", and its content is introduced into by reference at this.
Invention field
The present invention relates to wireless communication system and method, and relate in particular to satellite communication system and method.
Technical background
The system and method for satellite radio telephone communications is widely used in radiotelephone communication.The system and method for satellite radio telephone communications adopts at least one element based on the space usually, such as one or more satellites that are arranged to a plurality of satellite radio telephone radio communications.
The system of satellite radio telephone communications or method can be used and cover the single satellite antenna beam (antenna radiation pattern) by the entire area of this system service.Alternatively or with foregoing combine, a plurality of satellite beams (sub-district or antenna radiation pattern) are provided in cellular satellite radiotelephone communication system and method, wherein each one or more substantially clearly geographic areas service in can as a whole service range is so that be whole satellite coverage service jointly.Therefore, can carry out a honeycomb in the satellite-based system and method for honeycomb, it is similar to the structure of using in traditional terrestrial cellular radio telephone system and method.In typical case, passing of satelline two-way communication path and radiotelephone communication, radiotelephone communication signals is passed to radio telephone by down link, forward link or forward service link from satellite, and by up link, return link or return service link and be passed to satellite from radio telephone.
The master-plan and the operation of cellular satellite radiotelephone system and method are well known to those skilled in the art, and therefore need not be further described at this.And term used herein " radio telephone " includes or does not have the honeycomb and/or the satellite radio telephone of graphic alphanumeric display; PCS Personal Communications System (PCS) terminal, it can combine radio telephone with data processing, fax and/or its communication ability; PDA(Personal Digital Assistant), it can comprise radio-frequency (RF) transceiver and/or beeper, the Internet/intranet access, web browser, manager, schedule and/or global positioning system (GPS) receiver; And/or traditional laptop computer and/or palmtop computer or miscellaneous equipment, they comprise a radio-frequency (RF) transceiver.At this, radio telephone also can be called as " radio terminal ", " portable terminal " or abbreviate " terminal " as.One or more terms " radio terminal " used herein, " radio telephone ", " portable terminal " and/or " terminal " also comprise other radiation user unit/source arbitrarily; it can have time dependent or fixing geographical coordinate; and/or can be portable, portable, be installed in the vehicles (aviation, navigation or land), and/or be positioned and/or be arranged to local and/or move by one or more ground and/or one or more ground external position with a distributed way.And, term used herein " based on the element in space " comprises one or more satellites and/or one or more other object/platform (such as aircraft, balloon, unmanned vehicle, spaceship, guided missile or the like), they on the ground arbitrary height have a rule and/or irregular track.
Cellular satellite communications systems and method can corresponding to a coverage based on the element area of coverage in space on adopt hundreds of sub-district, antenna radiation pattern or spot beam.Should be appreciated that a large amount of sub-districts may be desirable usually, because the increase that the channeling of cellular satellite communications systems or method and ability thereof can be directly proportional with number of cells.And for given the element area of coverage or a coverage based on the space, the quantity that increases the sub-district also can provide higher gain in every sub-district, and this can increase link robustness and improve service quality.
Up link between wireless terminal and the satellite and downlink communication can use one or more air interfaces, comprise privately owned air interface and/or traditional terrestrial cellular interface, such as Time Division Multiplexing, time division multiple access (TDMA), code division multiplexing (CDM) and/or code division multiple access (CDMA) air interface and/or its various adaptive and/or derivatives.Can use single air interface everywhere at cellular satellite system.Alternatively, a plurality of air interface also can be used to satellite communication.For example, referring to the United States Patent (USP) of issuing on April 18th, 2000 by inventor Karabinis 6,052,560, its title is " Satellite System Utilizinga Plurality ofAir Interface Standards and Method Employing the Same ".Usually, no matter be to use still a plurality of air interfaces, each satellite cell all uses a carrier wave and/or channel to provide signaling and/or communication service in a prescribed direction (forward or return) usually at least.Therefore, each satellite cell (satellite beams or satellite antenna radiation diagram) must be arranged to all usually that to provide at least one to return service link (carrier wave and/or channel) and at least one forward service link (carrier wave and/or channel) be at least one radio terminal service.
Above-mentioned explanation concentrates on based on the element in space and the communication between the wireless terminal.Yet cellular satellite communications systems and method also adopt bidirectional feeder link that at least one gateway is provided and based on the communication between the element in space usually.Bidirectional feeder link comprises from gateway to based on the forward feeder link of the element in space and from based on the element in the space return feeder link to gateway.Forward feeder link and return feeder link use one or more carrier wave and/or channels on the feeder link frequency band respectively.
Summary of the invention
According to some embodiment of the present invention, the method of feeder link is provided between first geostationary satellite (geostationarysatellite) and satellite gateway, be included in and set up a communication link between the satellite gateway and second geostationary satellite, between first geostationary satellite and second geostationary satellite, set up a satellite-to-satellite link, and communication link and communication link are communicated by letter between first geostationary satellite and satellite gateway via satellite.
Satellite gateway can comprise first satellite gateway, and can be included in and set up an inter-gateway communication links between first satellite gateway and second satellite gateway and set up a satellite communication link between second satellite gateway and second geostationary satellite setting up communication link between first satellite gateway and second geostationary satellite.
Setting up communication link between the satellite gateway and second geostationary satellite can comprise with a feeder link frequency and set up a communication link.
Feeder link frequency can comprise a frequency in the Ku frequency band.
Comprise with one in optical communications link, infrared communication link, ultraviolet communications link and/or the RF communication link between first geostationary satellite and second geostationary satellite and set up a satellite-to-satellite link setting up satellite-to-satellite link between first geostationary satellite and second geostationary satellite.
Can be included in and set up first satellite-to-satellite link between first geostationary satellite and the 3rd geostationary satellite and between the 3rd geostationary satellite and second geostationary satellite, set up second satellite-to-satellite link setting up a satellite-to-satellite link between first geostationary satellite and second geostationary satellite.
Setting up inter-gateway communication links can be included in and set up first inter-gateway communication links between first satellite gateway and the 3rd satellite gateway and set up second inter-gateway communication links between the 3rd satellite gateway and second satellite gateway.
Some method can also comprise provides a feeder link data stream, and feeder link data stream is divided into a plurality of groupings, and via second geostationary satellite at least one in a plurality of groupings of route between first geostationary satellite and satellite gateway.
Some method can also comprise via a route between first geostationary satellite and satellite gateway in a plurality of groupings of route at least another, this route is different from least one the employed route in a plurality of groupings of route.
Some method can also be included in sets up a service link between first geostationary satellite and at least one wireless terminal on the satellite service link frequency, and on this feeder link the data transmission that receives is arrived at least one wireless terminal.
Some method can also be included in and receive data on the service link, and on service link the data transmission that receives is arrived satellite gateway via feeder link.
First geostationary satellite can be configured to a frequency in the Landsat band wireless communication signals is transmitted into a satellite coverage that ancillary terrestrial component was positioned at.Therefore, some method can also comprise with a frequency in the Landsat band wireless communication signals is transmitted into a wireless terminal that is positioned in the satellite coverage from ancillary terrestrial component.
A kind of method that feeder link is provided between first geostationary satellite and first satellite gateway according to some embodiment of the present invention comprises via at least one second geostationary satellite and communicating by letter between first geostationary satellite and first satellite gateway.
Can be included between first satellite gateway and at least one second geostationary satellite and set up a direct feeder link in communication between first geostationary satellite and first satellite gateway via at least one second geostationary satellite.
Setting up a direct feeder link between first satellite gateway and at least one second geostationary satellite can comprise with a feeder link frequency and set up a direct feeder link.Feeder link frequency can comprise a frequency in the Ku frequency band.
Communication between the first quiet ground satellite and first satellite gateway can comprise via at least one second satellite gateway communicates by letter.
Some method can also be included between first satellite gateway and at least one second satellite gateway and set up a communication link, and sets up a direct feeder link between at least one second satellite gateway and at least one second geostationary satellite.
Communication link between first satellite gateway and second satellite gateway can comprise an inter-gateway communication links.
Some method can also comprise provides a feeder link data stream, feeder link data stream is divided into a plurality of groupings, and via at least one grouping in a plurality of groupings of route between first geostationary satellite and first satellite gateway of at least one second geostationary satellite.
Some method can also comprise via a route between first geostationary satellite and satellite gateway in a plurality of groupings of route at least another, this route is different from least one the employed route in a plurality of groupings of route.
Certain methods also is included in and sets up a service link on the satellite service link frequency between first geostationary satellite and at least one wireless terminal; Arrive at least one wireless terminal with a data transmission that on feeder link, receives.
Certain methods also is included in and receives data on the service link; Arrive satellite gateway with the data transmission that on service link, receives via the feeder link handle.
First geostationary satellite is arranged on the frequency in Landsat band the satellite coverage emission wireless communication signals to ancillary terrestrial component was positioned at.Therefore, certain methods also is included on the frequency in the Landsat band wireless communication signals is transmitted into a wireless terminal that is positioned in the satellite coverage from ancillary terrestrial component.
According to some embodiments of the present invention, providing the method for feeder link to comprise between first geostationary satellite and first satellite gateway: between first geostationary satellite and first satellite gateway, to communicate by letter via at least one second geostationary satellite.
Be included between first satellite gateway and at least one second geostationary satellite in the communication between first geostationary satellite and first satellite gateway via at least one second geostationary satellite and set up a kind of direct feeder link.
Setting up direct feeder link between first satellite gateway and at least one second geostationary satellite comprises with a feeder link frequency and sets up direct feeder link.Feeder link frequency comprises a frequency in the Ku frequency band.
Communication between first geostationary satellite and first satellite gateway comprises via at least one second satellite gateway communicates by letter.
Certain methods also is included between first satellite gateway and at least one second satellite gateway and sets up a communication link; And between at least one second satellite gateway and at least one second geostationary satellite, set up a direct feeder link.
Communication link between first satellite gateway and second satellite gateway comprises inter-gateway communication links.
Certain methods also comprises provides a feeder link data stream; Feeder link data stream is divided into a plurality of groupings; With via at least one second geostationary satellite at least one in a plurality of groupings of route between first geostationary satellite and first satellite gateway.This method also comprise via a route between first geostationary satellite and first satellite gateway in a plurality of groupings of route at least another, this route is different from least one the employed route in a plurality of groupings of route.
According to other embodiments of the present invention, a kind of method of handling feeder link communications in satellite communication system comprises: set up direct feeder link with a feeder link frequency between the satellite gateway and first geostationary satellite; Be on the direct feeder link from the satellite gateway receiving communication signal at first geostationary satellite; Determine whether the signal of communication that receives is to be intended for use in second geostationary satellite on direct feeder link; Be to be intended for use in determining of second geostationary satellite in response to communicating by letter of on direct feeder link, receiving, determine between first geostationary satellite and second geostationary satellite, whether there is an intersatellite link.
Certain methods comprises that also in response to the communication that receives be to be intended for use in second geostationary satellite and to have determining of intersatellite link between first geostationary satellite and second geostationary satellite on direct feeder link, via satellite between chain road direction second geostationary satellite transmit signal of communication.
Certain methods also comprises in response to being to be intended for use in second geostationary satellite and not have determining of intersatellite link between first geostationary satellite and second geostationary satellite in the communication that receives on the feeder link, sets up intersatellite link and the intersatellite link that passes through to be set up is transmitted signal of communication to second geostationary satellite between first geostationary satellite and second geostationary satellite.
According to some embodiments of the present invention, the method for handling feeder link communications in satellite communication system comprises: set up an intersatellite link between first geostationary satellite and second geostationary satellite; The first geostationary satellite place via satellite between link from the second geostationary satellite receiving communication signal; Determine whether the signal of communication that receives is to be intended for use in a satellite gateway on intersatellite link; Be to be intended for use in determining of a satellite gateway in response to communicating by letter of on intersatellite link, receiving, determine between first geostationary satellite and satellite gateway, whether there is a feeder link.
Certain methods also comprises in response to being to be intended for use in a satellite gateway and to have determining of feeder link between first geostationary satellite and satellite gateway in the communication that receives on the feeder link, transmits signal of communication by feeder link to satellite gateway.
Certain methods also comprises in response to being to be intended for use in a satellite gateway and not have determining of feeder link between first geostationary satellite and satellite gateway at the signal of communication that receives on the intersatellite link, sets up a feeder link and the feeder link that passes through to be set up is transmitted signal of communication to satellite gateway between first geostationary satellite and satellite gateway.
According to some embodiments of the present invention, a kind of satellite communication system comprises: first and second geostationary satellites, and it is arranged to and sets up satellite-to-satellite link between them; And satellite gateway, its be arranged to first and second geostationary satellites in one set up direct feeder link and with satellite-to-satellite link and directly another in feeder link and first and second geostationary satellites set up indirect feeder link.
Satellite gateway comprises first satellite gateway, and this system also comprises second satellite gateway, and it is configured to set up inter-gateway communication links with first satellite gateway and with satellite-to-satellite link, directly another in feeder link and the inter-gateway communication links and first and second geostationary satellites set up indirect feeder link.
This system also comprises an intermediary satellite gateway; Inter-gateway communication links between first and second satellite gateways comprises the middle inter-gateway communication links of first between first satellite gateway and the intermediary satellite gateway, and inter-gateway communication links in the middle of second between the intermediary satellite gateway and second satellite gateway.
Satellite-to-satellite link comprises in optical communications link, infrared communication link, ultraviolet communications link and/or the radio frequency communication link.
This system also comprises an intermediate geo-stationary satellite, satellite-to-satellite link between first and second geostationary satellites comprises communication link between first intermediate, satellite between first geostationary satellite and the intermediate geo-stationary satellite, and communication link between second intermediate, satellite between the intermediate geo-stationary satellite and second geostationary satellite.
This system also comprises a routing table, and it is stored in the satellite gateway place and is arranged to satellite gateway provides routing iinformation to select a route that is used to set up feeder link to assist satellite gateway.
A kind of satellite communication system of other embodiment comprises first geostationary satellite according to the present invention, and it is arranged to a plurality of wireless terminal emission wireless communication signals in the satellite coverage that comprises one or more satellite cell on one or more satellite forward service link frequencies; Second geostationary satellite; And satellite gateway, it is arranged to second geostationary satellite and sets up direct feeder link; This first geostationary satellite is arranged to direct feeder link and satellite gateway between the satellite gateway and second geostationary satellite and sets up indirect feeder link.
Satellite gateway comprises first satellite gateway, and this system also comprises and is arranged to second satellite gateway of setting up inter-gateway communication links with first satellite gateway; In first or second geostationary satellite at least one is configured to set up indirect feeder link with the direct feeder link and second satellite gateway between the inter-gateway communication links between first and second satellite gateways and first satellite gateway and second geostationary satellite.
Some embodiments of the present invention provide a kind of satellite gateway of setting up indirect feeder link with geostationary satellite that is arranged to.
According to some embodiments of the present invention, a kind of satellite gateway comprises antenna; And electronic system, it is coupled to antenna and is arranged to via the antenna and first geostationary satellite sets up direct feeder link, and sets up indirect feeder link via the intersatellite link between first geostationary satellite and second geostationary satellite and second geostationary satellite.
Satellite gateway also comprises a routing table, and it is stored in the satellite gateway place and is arranged to satellite gateway provides routing iinformation to select a route that is used to set up indirect feeder link to assist satellite gateway.
According to some embodiments of the present invention, a kind of satellite gateway comprises antenna; And electronic system, it is coupled to antenna and is arranged to by direct feeder link from the first geostationary satellite receiving communication signal, determines whether the signal of communication that receives on direct feeder link is to be intended for use in second satellite gateway; And in response to the communication that receives on direct feeder link is to be intended for use in determining of second satellite gateway, transmits communication via chain road direction second satellite gateway between gateway.
According to some embodiments of the present invention, a kind of satellite gateway comprises antenna; And electronic system, it is coupled to antenna and is arranged to: receive a feeder link communications signal by link between gateway from second satellite gateway, the geostationary satellite that identification feeder link communications signal is intended for use in, set up indirect feeder link with the geostationary satellite that the feeder link communications signal is intended for use in, the geostationary satellite that the feeder link communications signal forwarding is intended for use in to the feeder link communications signal.
According to some embodiments of the present invention, geostationary satellite is arranged to satellite gateway and sets up indirect feeder link.
Geostationary satellite also comprises a routing table, and it is stored in the geostationary satellite place and is arranged to geostationary satellite provides routing iinformation to select a route that is used to set up indirect feeder link to assist geostationary satellite.
According to some embodiments of the present invention, a kind of geostationary satellite comprises antenna; And electronic system, it is configured to set up direct feeder link with feeder link frequency and satellite gateway, by direct feeder link from the satellite gateway receiving communication signal, determine that this signal of communication is to be intended for use in second geostationary satellite, and set up intersatellite link with second geostationary satellite.Chain road direction second geostationary satellite was transmitted signal of communication between electronic system also was arranged to via satellite.
According to some embodiments of the present invention, a kind of geostationary satellite comprises antenna; And electronic system, it is arranged to second geostationary satellite and sets up intersatellite link, by this intersatellite link from the second geostationary satellite receiving communication signal, determine whether this signal of communication is to be intended for use in satellite gateway, and set up direct feeder link with second geostationary satellite.Electronic system also is arranged to by direct feeder link and transmits signal of communication to satellite gateway.
Description of drawings
Contained accompanying drawing provides further understanding of the present invention, be merged in the application and become its part, description of drawings (or a plurality of) some embodiment of the present invention.In the accompanying drawings:
Fig. 1-2 is according to the cellular satellite communications systems of the embodiment of the invention and the schematic diagram of method; With
Fig. 3-the 5th is according to the cellular satellite communications systems of some embodiments of the present invention and the operational flowchart of element.
Embodiment
The embodiment that specifically can imitate of the present invention is illustrated referring now to accompanying drawing.Yet the present invention can and should not be counted as with many different forms realizations and be subject to the embodiment that sets forth herein.On the contrary, these embodiment are provided for thoroughly and comprehensive present disclosure, and fully pass on scope of the present invention to those skilled in the art.Should be appreciated that this unit can be connected directly or be coupled to another unit or may have intervenient unit when a unit is called as " being connected " or " being coupled " to another unit.And " being connected " or " being coupled " used herein can comprise wireless connections or coupling.
The purpose of term used herein just is used to illustrate special embodiment rather than is intended to limit the present invention.Singulative used herein " one " and " one " are intended to also comprise plural form, unless do explanation expressly in addition.In addition, it should also be understood that, employed term " comprises ", has narrated " comprising " existence of described parts, integral body, step, operation, unit and/or element in this explanation, but does not get rid of one or more other the existence or interpolations of parts, integral body, step, operation, unit, element and/or its colony.
Unless otherwise defined, all terms (comprising technology and scientific term) used herein all have the identical meanings of understanding for the those of ordinary skill in the field under the present invention.In addition, it should also be understood that, in common dictionary, define term those terms and should be interpreted as them and have the meaning that meets correlation technique and disclosure environment, unless and clearly defined at this, otherwise can not be interpreted as an idealized or excessive formal meaning.
Although should be appreciated that term used herein first and second is to be used for illustrating different unit, yet these unit should not limited by these terms.These terms just are used for distinguishing a unit and another unit.Therefore, under the prerequisite that does not break away from instruction of the present invention, hereinafter, first element based on the space can be called as second element based on the space, and similarly, second element based on the space also can be called as first element based on the space.Term used herein " and/or " comprise one or more any and whole combinations of being listd that are associated.Symbol "/" also be used as " and/or " reduced representation.
And it is comparatively speaking overlapping substantially that (or a plurality of) " substantially the same " frequency band used herein means two or more frequency bands, but may for example have some Non-overlapping Domain at a band end and/or other places.Comparatively speaking (or a plurality of) air interface of " basic identical " means two or more air interfaces is similarly, but need not be consistent.May there be some difference in an air interface (that is, the satellite air interface) with respect to another air interface (that is, the ground air interface), so that the one or more different feature that may exist between explanation ground and the satellite communication environment/relevant.For example, with a vocoder rate that may be used to ground communication (promptly, for ground communication, sound can be compressed (" speech coding ") and be about 9 to 13kbps, and for satellite communication, for example, vocoder rate may use about 2 to 4kbps) to compare, a different vocoder rate can be used to satellite communication; For example, forward error correction, interleave depth and/or the spread-spectrum code used with ground communication (being Walsh sign indicating number, short code, long code and/or frequency hopping code) compared, for satellite communication, can use different forward error corrections, different interleaving depths and/or different spread-spectrum codes.
Some embodiment of the present invention can result from following cognition, a satellite that promptly is placed in special rail groove (position) may can't obtain desired feeder link spectrum amount on the desired frequency group, it may be that satellite is used for that to set up direct communication required with satellite gateway.For example, the feeder link spectrum such as Ku frequency band feeder link spectrum may be for unavailable the satellite on the special rail groove (position) best or almost the best for satellite at one.
According to the embodiment that imitates of the present invention, satellite can be arranged to another satellite at least that is positioned at an orbital position and set up at least one satellite-to-satellite link, and feeder link spectrum can be used another satellite at least at this orbital position.Satellite and at least one satellite-to-satellite link between another satellite can be in conjunction with the feeder link spectrum that can be used for another satellite at least being used for setting up indirect feeder link between this satellite and a satellite gateway at least, thus feeder link communications provided to this satellite.At least one satellite-to-satellite link can be unidirectional and/or two-way link, and it is configured to use light wave frequency band, infrared band, ultraviolet frequency band, radio frequency (RF) frequency band and/or the frequency of other frequency band arbitrarily.Embodiments of the invention can also combine with at least one the traditional direct feeder link between satellite and satellite gateway and/or other ground installation.
Fig. 1 is according to the cellular satellite communications systems of the embodiment of the invention and the schematic diagram of method.As shown in fig. 1, these cellular satellite communications systems and method 100 comprise it can being the first satellite 110A and the second satellite 110B of geostationary orbit satellite.The first and second satellite 110A, 110B can comprise communication antenna 115A, 115B and be arranged to electronic system 125A, the 125B of control satellite operations.The first satellite 110A is configured to one or more satellite forward service links (down link) frequency f
DBy one or more satellite links 114 to comprising one or more satellite cell 130-130 " satellite coverage in one or more wireless terminal 120a emission wireless communication signals.The first satellite 110A is configured to return service link (up link) frequency f by one or more satellites
UFrom satellite cell 130-130 " one or more wireless terminal 120a receive radio communications.The first and second satellite 110A, 110B can be arranged to and set up at least one satellite-to-satellite link 118 and be convenient to communication between them.
Ancillary terrestrial net (ATN) comprises at least one ancillary terrestrial component (ATC) 140, ancillary terrestrial component (ATC) 140 can comprise antenna 140a and electronic system 140b, and this ancillary terrestrial net (ATN) is arranged to by the uplink frequency f ' of Radio Link 116 in Landsat band
UReceive wireless communication signals from the second wireless terminal 120b.Frequency f '
UCan be identical with the up link or the down-link frequencies that are used to communicate by letter with satellite 110A in the satellite cell 130, wireless terminal 120b be arranged in satellite cell 130 and/or be positioned at the satellite cell 130 of an adjacent or long range positioning ', 130 ".Therefore, as illustrated in fig. 1, wireless terminal 120a can communicate by letter with satellite 110A with a frequency in the Landsat band, and wireless terminal 120b also can communicate by letter with ancillary terrestrial component 140 with a frequency in the Landsat band.
Still with reference to figure 1, the embodiment of satellite communications system/method 100 can comprise at least one satellite gateway 160, and it can comprise antenna 160a and electronic system 160b.Satellite gateway 160 can be connected to other network 162, comprises ground and/or other wired and/or cordless communication network, such as public switched telephone network (PSTN), honeycomb/PCS network and/or the Internet.
For the extensive geographical coverage as mobile satellite radiotelephone communication system illustrated in fig. 1 is provided, it is desirable that a plurality of satellites are provided in different geostationary orbital positions.For example illustrated in fig. 1, satellite communications system/method 100 can comprise first satellite 110A that is placed in first orbital position and the second satellite 110B that is placed in second orbital position.Each satellite 110A, 110B can serve a Special geography area of coverage in this system respectively.As above mentioned, a satellite that is placed in special orbital position possibly can't obtain desired feeder link spectrum amount on desired group of frequencies, and the satellite expectation is set up direct communication with described group of frequencies and satellite gateway 160.For example, the feeder link spectrum such as Ku frequency band feeder link spectrum may be not useable for the satellite 110A at special rail groove place, and it is best or almost best that this special rail groove may provide coverage to the expectation geographical for satellite.
In addition, feeder link spectrum may be for example because communication condition, atmospheric conditions, service/its maintenance situation and/or other are former thereby become and be not useable for a satellite temporarily.Because any of these reason, the first satellite 110A possibly can't set up direct feeder link with satellite gateway 160 and be connected 112A.According to some embodiment of the present invention, the first satellite 110A can be connected 112A ' by using intersatellite link 118 between the first satellite 110A and the second satellite 110B and the direct satellite feeder link 112B between the second satellite 110B and the gateway 160 to set up an indirect feeder link with satellite gateway 160.
Flank " the satellite configuration of satellite (110A, 110D) that Fig. 2 has illustrated that one comprises two " central authorities " satellite (110B, 110C) and two ".Corresponding satellite gateway (160A is to 160D) also is illustrated.In certain embodiments, these satellites can be positioned on the predetermined geostationary arc 190, but need not be in this position in other embodiments.And, be only used for illustrative purposes along the satellite sequence 110A-D of geostationary arc 190.Satellite 110B, 110C for example use the Ku frequency band to communicate by letter with corresponding satellite gateway 160B, 160C by corresponding directly feeder link 220B, 220C.By setting up intersatellite link 285 with satellite 110B and using the available feeder link spectrum of communicating by letter to its corresponding satellite gateway 160A of satellite 110B, satellite 110A can communicate by letter with a respective satellite gateway 160A indirectly.Satellite 110B can with feeder link spectrum may not allow satellite 110B directly to communicate by letter with satellite gateway 160A.Yet as above mentioned, satellite 110B can set up direct feeder link with corresponding satellite gateway 160B and be connected 220B, and this satellite gateway can be set up an inter-gateway communication links 255 with satellite gateway 160A again then.Therefore, the indirect feeder link 220A ' between satellite 110A and the gateway 160A can also comprise at least one inter-gateway communication links 255 between satellite gateway 160A, the 160B.For example, inter-gateway communication links 255 can comprise a microwave communications link and/or a wire communication link.
A satellite can be set up feeder link with a plurality of satellite gateways.For example, though satellite 110C can have the direct feeder link to satellite gateway 160C, satellite 110C can also use and the feeder link 220C of satellite gateway 160C and the gateway between satellite gateway 160C and the satellite gateway 160D between link 275 set up indirect feeder link 220C ' with another satellite gateway 160D.Alternatively, if another satellite 110D has the direct feeder link 220D with satellite gateway 160D, then satellite 110C can use direct feeder link 220D and the intersatellite link between satellite 110C and the satellite 110D 295 between satellite 110D and the satellite gateway 160D to set up indirect feeder link 220C with satellite gateway 160D ".
In certain embodiments, satellite 110A and gateway 160A and/or one replace ground installation and satellite 110D and gateway 160D and/or a direct communication of replacing between the ground installation and also can use direct feeder link to provide.And in certain embodiments, corresponding satellite 110B, 110C can directly communicate by letter with corresponding satellite gateway 160A, 160D.Although satellite 110A uses the intersatellite link 285 with satellite 110B to illustrate in Fig. 2, yet illustrated intersatellite link between instead of satellites 110A and the 110B or the illustrated intersatellite link between satellite 110A and 110B, also can set up intersatellite link with satellite 110C.In addition, although satellite 110B is illustrated with gateway 160B and communicates by letter, gateway 160B separates with any other satellite gateway (160A, 160C, 160D), yet satellite gateway 160B can be included in any other satellite gateway (160A, 160C, 160D) partially or completely or be distributed between satellite gateway 160A, 160C, the 160D.As shown in Figure 2, the part among gateway 160A, 160B, 160C, the 160D can have inter-gateway communication links (255,265,275) and disposes and be used for feeder link communications and/or other communication of relaying between them at least.
Be to be understood that, satellite gateway such as satellite gateway 160A can comprise the satellite gateway that separates on a plurality of positions, they can interconnect in certain embodiments, and satellite 110B can be by satellite gateway/transmission of using feeder link spot beam and/or at least two basic vertical polarizations that the feeder link information of satellite 110A is passed to separate on a plurality of positions feeder link information from the satellite 110A of the satellite gateway that separates on a plurality of positions.
Some embodiment according to the present invention is illustrated with operating among Fig. 3 that feeder link is associated is provided between satellite and satellite gateway.This generic operation can be included in and set up up/descending (U/D) communication link (piece 310) between the satellite gateway and the first satellite SAT1 as shown in the figure, between the first satellite SAT1 and the second satellite SAT2, set up inter-satellite (I/S) communication link (piece 320), and communication link and up/downlink communication link between the second satellite SAT2 and satellite gateway, communicate by letter (piece 330) via satellite.Intersatellite link between satellite SAT1 and the SAT2 can be set up by third party's intermediate, satellite SAT12.Therefore, satellite-to-satellite link can comprise first satellite-to-satellite link between the first satellite SAT1 and the 3rd satellite SAT3 and second satellite-to-satellite link between the 3rd satellite SAT3 and the second satellite SAT2.
Communication link between the satellite gateway and second satellite can be such as Ku frequency band, C frequency band and/or be established on the feeder link frequency the frequency in other frequency band arbitrarily
In some cases, the first satellite SAT1 possibly can't set up and the direct feeder link of satellite gateway.Therefore, the communication link between the second satellite SAT2 and the satellite gateway can be realized with an intermediary satellite gateway.For example, the first satellite SAT1 can set up a direct feeder link with second satellite gateway.Inter-gateway communication links can be established between first satellite gateway and second satellite gateway.Therefore, indirect feeder link can be via satellite between communication link, directly feeder link and inter-gateway communication links are established between the second satellite SAT2 and satellite gateway.
Equally, the direct satellite-to-satellite link between the first satellite SAT1 and the second satellite SAT2 may be disabled.Therefore, by setting up first satellite-to-satellite link between the first satellite SAT1 and the 3rd satellite SAT3 and set up second satellite-to-satellite link between the 3rd satellite SAT3 and the second satellite SAT2, the satellite-to-satellite link between the first satellite SAT1 and the second satellite SAT2 can be established.
Operating among Fig. 4 of being associated with processing feeder link communications in the satellite communication system that comprises the first and second satellite SAT1, SAT2 and satellite gateway according to other embodiments of the present invention is illustrated.As shown in FIG., this generic operation can comprise with feeder link frequency sets up a direct feeder link (piece 410) between the satellite gateway and the first satellite SAT1, at the first satellite SAT1 place by direct feeder link from satellite gateway receiving communication signal (piece 420) with determine whether the signal of communication that receives at direct feeder link is to be intended for use in the first satellite SAT1 (piece 430).If the signal of communication that receives on direct feeder link is to be intended for use in the first satellite SAT1, then this signal of communication is at the first satellite place processed (piece 440).Yet,, determine between first satellite and the second satellite SAT2, whether there is an intersatellite link (piece 450) if the signal of communication that receives is to be intended for use in the second satellite SAT2 on direct feeder link.
If in the communication that receives on the feeder link is to be intended for use in the second satellite SAT2 and not have intersatellite link between first satellite and second satellite, then intersatellite link is established the intersatellite link that (piece 460) and signal of communication pass through to be set up and is forwarded to the second satellite SAT2 (piece 470) between the first satellite SAT1 and the second satellite SAT2.
If the communication that receives on direct feeder link is to be intended for use in the second satellite SAT2 and to have an intersatellite link between the first satellite SAT1 and the second satellite SAT2, then this signal of communication via satellite between link be forwarded to the second satellite SAT2 (piece 470).
Further operating among Fig. 5 that some embodiment according to the present invention is associated with processing feeder link communications in the satellite communication system that comprises the first and second satellite SAT1, SAT2 and satellite gateway is illustrated.As shown in FIG., an intersatellite link is established (piece 510) between the first satellite SAT1 and the second satellite SAT2.From the signal of communication of first satellite the second satellite SAT2 place via satellite between link be received (piece 520).Determine whether the signal of communication that receives is to be intended for use in the second satellite SAT2 (piece 530) on intersatellite link.If this signal of communication is to be intended for use in the second satellite SAT2, this signal of communication therefore processed (piece 540) then.Yet,, determine between the second satellite SAT2 and satellite gateway, whether there is feeder link (piece 550) if this signal of communication is to be intended for use in satellite gateway.If do not have feeder link between the second satellite SAT2 and satellite gateway, then a feeder link is established (piece 560) between the second satellite SAT2 and gateway.Then, signal of communication can be forwarded to satellite gateway (piece 570).
According to some embodiment of the present invention, a satellite and/or a gateway in the satellite communication system can be preserved a routing table, and the route that is used for feeder link can be selected from this routing table.In certain embodiments, the routing table at a particular satellite/gateway place can comprise the clauses and subclauses that are used between the mutual satellite/gateway of system, and this particular satellite/gateway can be set up a DCL with these clauses and subclauses.Each clauses and subclauses can comprise the information relevant with Linktype, is intersatellite link (I/S) or satellite-ground Uplink/Downlink (U/D) such as a link.These clauses and subclauses it may also be pointed out that Link State, are activities or inactive such as a link.An active link can also be represented as idle or busy.Link can sort according to priority based on cost, available bandwidth, fail safe and/or other criterion.The part of a routing table exemplary is illustrated in following table 1.
Table 1-feeder link routing table is used for satellite 110B
With following link
The destination
Type
State
Satellite N/A I/S activity-free time
110A
Table 1 has illustrated the part of the feeder link routing table of the satellite 110B that is used for shown in Fig. 2.This routing table provides information to assist satellite 110B identification and/or to select a suitable route to be used for the feeder link communications with other (or a plurality of) satellite/(or a plurality of) gateway.As shown in table 1, satellite 110B can set up DCL (referring to Fig. 2) with satellite 110A, 110C and gateway 160B." destination " field as the 2nd row is pointed, and the direct link 305 that the indirect link that comprises indirect feeder link can be used satellite 110C is established between satellite 110B and satellite/ gateway 110D, 160A, 160B, 160C and/or 160D.Equally, pointed as " destination " field of the 3rd row, the direct link 220B that the indirect link that comprises indirect feeder link can be used gateway 160B is established between satellite 110B and satellite/ gateway 110C, 110D, 160A, 160B, 160C and/or 160D.By using routing table, satellite 110B can set up a feeder link directly or indirectly with another satellite or gateway in the system.With can from a special satellite/gateway, obtain the relevant information in those destinations and can in system, be updated periodically variation with explanation Link State and/or availability.
The free/active status of the route shown in the table 1 only is provided as an example.Routing state can comprise measuring such as using percentage, or the numeral such as the bandwidth that more information can be provided in selecting potential route.Further information such as the downstream links state also can collect and be included in the routing table from other satellite/gateway.
As the example that routing table is used, satellite 110B may wish that the feeder link of setting up with gateway 160A is connected.Consult its routing table, satellite 110B can be with its note for arriving gateway 160A, and indirect feeder link 110C or gateway 160B via satellite is routed.Because the link to satellite 110C is listed in " inertia ", and is listed in " activity-free time " to the Link State of gateway 160B, so satellite 110B can come the route feeder link by gateway 160B.Otherwise, if be listed in " movable-busy " to the Link State of gateway 160B, then satellite 110B can alternatively set up/activate and the link of satellite 110C and via satellite 110C come the route indirect feeder link.
According to some embodiment, feeder link data can for example be divided into grouping, and these groupings can be via being sent directly or indirectly according to the best any feeder link that transmits grouping of correlation criterion.Therefore, the satellite system according to some embodiment of the present invention can be arranged to along with changes in network condition is come dynamically route feeder link communications.This type systematic can more effectively be handled the feeder link business.
Be to be understood that, the method of setting up indirect feeder link as described here between satellite and gateway can also be applied to the element based on the space, should comprise the one or more non-stationary unit over the ground such as one or more nongeostationary satellites based on the element in space.Further, it is to be appreciated that in certain embodiments, indirect feeder link may comprise a plurality of yardsticks such as a plurality of polarizations, phase place and/or space scale.And, those skilled in the art is to be understood that, indirect feeder link can be used to unidirectional or two-wayly to provide any information between based at least one unit of the element in space and at least one gateway, and this information comprises with form and/or adjusts the relevant information of one or more antenna radiation patterns based at least one unit of the element in space.In certain embodiments of the present invention, a unit based on the element in space that is associated with indirect feeder link is a unit based on the element in space that is not configured to directly to provide to radio terminal communication.Alternatively, this unit is arranged to be provided indirect feeder link and is coupled at least one Unit second based on the element in space, and wherein, being arranged to directly based on Unit second of the element in space provides communication to radio terminal.
Embodiments of the invention are disclosed in drawing and description, although adopted specific term, yet they are only with general and narrative meaning is used and its purpose does not lie in restriction, and scope of the present invention is set forth in following claim.
Claims (46)
1. method that feeder link is provided between first geostationary satellite and satellite gateway, this method comprises:
Between the satellite gateway and second geostationary satellite, set up a communication link;
Between first geostationary satellite and second geostationary satellite, set up a satellite-to-satellite link; With
Communication link and communication link transmit feeder link information via satellite between first geostationary satellite and satellite gateway.
2. according to the method for claim 1, wherein, satellite gateway comprises first satellite gateway, and is included in and sets up inter-gateway communication links between first satellite gateway and second satellite gateway and set up satellite communication link between second satellite gateway and second geostationary satellite setting up communication link between first satellite gateway and second geostationary satellite.
3. according to the process of claim 1 wherein, between the satellite gateway and second geostationary satellite, set up communication link and comprise with feeder link frequency and set up communication link.
4. according to the method for claim 3, wherein, feeder link frequency comprises a frequency in the Ku frequency band and/or a frequency in the C frequency band.
5. according to the method for claim 1, wherein, comprise with one in optical communications link, infrared communication link, ultraviolet communications link and/or the RF communication link between first geostationary satellite and second geostationary satellite and set up a satellite-to-satellite link setting up satellite-to-satellite link between first geostationary satellite and second geostationary satellite.
6. according to the method for claim 1, wherein, be included in and set up first satellite-to-satellite link between first geostationary satellite and the 3rd geostationary satellite and between the 3rd geostationary satellite and second geostationary satellite, set up second satellite-to-satellite link setting up satellite-to-satellite link between first geostationary satellite and second geostationary satellite.
7. according to the method for claim 2, wherein, setting up inter-gateway communication links is included in and sets up first inter-gateway communication links between first satellite gateway and the 3rd satellite gateway and set up second inter-gateway communication links between the 3rd satellite gateway and second satellite gateway.
8. according to the method for claim 1, also comprise:
A feeder link data stream is provided;
Feeder link data stream is divided into a plurality of groupings; With
Via second geostationary satellite at least one in a plurality of groupings of route between first geostationary satellite and satellite gateway.
9. method according to Claim 8, also comprise via a route between first geostationary satellite and satellite gateway in a plurality of groupings of route at least another, this route is different from least one the employed route in a plurality of groupings of route.
10. according to the method for claim 1, also be included in and between first geostationary satellite and at least one wireless terminal, set up a service link on the satellite service link frequency; With
The data transmission that receives on feeder link is arrived at least one wireless terminal.
11., also be included in and receive data on the service link according to the method for claim 10; With
Via feeder link the data transmission that receives is arrived satellite gateway on service link.
12. method according to claim 1, wherein, first geostationary satellite is arranged on the frequency in Landsat band to the satellite coverage emission wireless communication signals that ancillary terrestrial component was positioned at, and this method also is included on the frequency in the Landsat band wireless communication signals is transmitted into a wireless terminal that is positioned in the satellite coverage from ancillary terrestrial component.
13. the method that feeder link is provided between first geostationary satellite and satellite gateway comprises: between first geostationary satellite and satellite gateway, communicate by letter via at least one second geostationary satellite.
14. method according to claim 13, wherein, be included between satellite gateway and at least one second geostationary satellite in the communication between first geostationary satellite and the satellite gateway via at least one second geostationary satellite and set up a kind of direct feeder link.
15., wherein, between satellite gateway and at least one second geostationary satellite, set up direct feeder link and comprise with a feeder link frequency and set up direct feeder link according to the method for claim 14.
16. according to the method for claim 15, wherein, feeder link frequency comprises a frequency in the Ku frequency band and/or a frequency in the C frequency band.
17. according to the method for claim 14, wherein, satellite gateway comprises first satellite gateway, and wherein, the communication between first geostationary satellite and first satellite gateway comprises via at least one second satellite gateway communicates by letter.
18. the method according to claim 17 also comprises:
Between first satellite gateway and at least one second satellite gateway, set up a communication link; With
Between at least one second satellite gateway and at least one second geostationary satellite, set up a direct feeder link.
19. according to the method for claim 18, wherein, the communication link between first satellite gateway and second satellite gateway comprises a terrestrial communication link.
20. the method according to claim 13 also comprises:
A feeder link data stream is provided;
Feeder link data stream is divided into a plurality of groupings; With
Via at least one second geostationary satellite at least one in a plurality of groupings of route between first geostationary satellite and satellite gateway.
21. according to the method for claim 20, also comprise via a route between first geostationary satellite and satellite gateway in a plurality of groupings of route at least another, this route is different from least one the employed route in a plurality of groupings of route.
22. a method of handling feeder link communications in satellite communication system, this method comprises:
Between the satellite gateway and first geostationary satellite, set up direct feeder link with a feeder link frequency;
Be on the direct feeder link from the satellite gateway receiving communication signal at first geostationary satellite;
Determine whether the signal of communication that receives is to be intended for use in second geostationary satellite on direct feeder link; With
In response to the communication that receives on direct feeder link is to be intended for use in determining of second geostationary satellite, determines whether there is an intersatellite link between first geostationary satellite and second geostationary satellite.
23. the method according to claim 22 also comprises:
In response to the communication that receives on direct feeder link is to be intended for use in second geostationary satellite and to have determining of intersatellite link between first geostationary satellite and second geostationary satellite, via satellite between chain road direction second geostationary satellite transmit signal of communication.
24. the method according to claim 22 also comprises:
In response to being to be intended for use in second geostationary satellite and between first geostationary satellite and second geostationary satellite, not have determining of intersatellite link in the communication that receives on the feeder link, between first geostationary satellite and second geostationary satellite, set up intersatellite link and the intersatellite link that passes through to be set up is transmitted signal of communication to second geostationary satellite.
25. a method of handling feeder link communications in satellite communication system, this method comprises:
Between first geostationary satellite and second geostationary satellite, set up an intersatellite link;
The first geostationary satellite place via satellite between link from the second geostationary satellite receiving communication signal;
Determine whether the signal of communication that receives is to be intended for use in a satellite gateway on intersatellite link; With
In response to the communication that receives on intersatellite link is to be intended for use in determining of a satellite gateway, determines whether there is a feeder link between first geostationary satellite and satellite gateway.
26. the method according to claim 25 also comprises:
In response to being to be intended for use in a satellite gateway and between first geostationary satellite and satellite gateway, to have determining of feeder link in the communication that receives on the feeder link, transmit signal of communication to satellite gateway by feeder link.
27. the method according to claim 25 also comprises:
In response to being to be intended for use in a satellite gateway and between first geostationary satellite and satellite gateway, not have determining of feeder link at the signal of communication that receives on the intersatellite link, between first geostationary satellite and satellite gateway, set up a feeder link and the feeder link that passes through to be set up is transmitted signal of communication to satellite gateway.
28. a satellite communication system comprises:
First and second geostationary satellites, it is arranged to and sets up satellite-to-satellite link between them; With
Satellite gateway, its be arranged to first and second geostationary satellites in one set up direct feeder link and with satellite-to-satellite link and directly another in feeder link and first and second geostationary satellites set up indirect feeder link.
29. satellite communication system according to claim 28, wherein, satellite gateway comprises first satellite gateway, and this system also comprises second satellite gateway, and it is configured to set up inter-gateway communication links with first satellite gateway and with satellite-to-satellite link, directly another in feeder link and the inter-gateway communication links and first and second geostationary satellites set up indirect feeder link.
30. system according to claim 29, also comprise an intermediary satellite gateway, wherein, inter-gateway communication links between first and second satellite gateways comprises the middle inter-gateway communication links of first between first satellite gateway and the intermediary satellite gateway, and inter-gateway communication links in the middle of second between the intermediary satellite gateway and second satellite gateway.
31. according to the system of claim 28, wherein, satellite-to-satellite link comprises in optical communications link, infrared communication link, ultraviolet communications link and/or the radio frequency communication link.
32. system according to claim 28, also comprise an intermediate geo-stationary satellite, wherein, satellite-to-satellite link between first and second geostationary satellites comprises communication link between first intermediate, satellite between first geostationary satellite and the intermediate geo-stationary satellite, and communication link between second intermediate, satellite between the intermediate geo-stationary satellite and second geostationary satellite.
33. according to the system of claim 28, also comprise a routing table, it is stored in the satellite gateway place and is arranged to satellite gateway provides routing iinformation to select a route that is used to set up feeder link to assist satellite gateway.
34. a satellite communication system comprises:
First geostationary satellite, it is arranged to a plurality of wireless terminal emission wireless communication signals in the satellite coverage that comprises one or more satellite cell on one or more satellite forward service link frequencies;
Second geostationary satellite; With
Satellite gateway, it is arranged to second geostationary satellite and sets up direct feeder link;
Wherein, first geostationary satellite is arranged to direct feeder link and satellite gateway between the satellite gateway and second geostationary satellite and sets up indirect feeder link.
35. according to the system of claim 34, wherein, satellite gateway comprises first satellite gateway, this system also comprises and is arranged to second satellite gateway of setting up inter-gateway communication links with first satellite gateway;
Wherein, at least one in first or second geostationary satellite is configured to set up indirect feeder link with the direct feeder link and second satellite gateway between the inter-gateway communication links between first and second satellite gateways and first satellite gateway and second geostationary satellite.
36. one kind is arranged to the satellite gateway of setting up indirect feeder link with geostationary satellite.
37. a satellite gateway comprises:
Antenna; With
Electronic system, it is coupled to antenna and is arranged to via the antenna and first geostationary satellite sets up direct feeder link, and sets up indirect feeder link via the intersatellite link between first geostationary satellite and second geostationary satellite and second geostationary satellite.
38. according to the satellite gateway of claim 37, also comprise a routing table, it is stored in the satellite gateway place and is arranged to satellite gateway provides routing iinformation to select a route that is used to set up indirect feeder link to assist satellite gateway.
39. a satellite gateway comprises:
Antenna; With
Electronic system, it is coupled to antenna and is arranged to by direct feeder link from the first geostationary satellite receiving communication signal, determines whether the signal of communication that receives on direct feeder link is to be intended for use in second satellite gateway; And in response to the communication that receives on direct feeder link is to be intended for use in determining of second satellite gateway, transmits communication via chain road direction second satellite gateway between gateway.
40. a satellite gateway comprises:
Antenna; With
Electronic system, it is coupled to antenna and is arranged to: receive a feeder link communications signal by link between gateway from second satellite gateway, the geostationary satellite that identification feeder link communications signal is intended for use in, set up indirect feeder link with the geostationary satellite that the feeder link communications signal is intended for use in, the geostationary satellite that the feeder link communications signal forwarding is intended for use in to the feeder link communications signal.
41. one kind is arranged to the geostationary satellite of setting up indirect feeder link with satellite gateway.
42. geostationary satellite according to claim 41, also comprise a routing table, it is stored in the geostationary satellite place and is arranged to geostationary satellite provides routing iinformation to select a route that is used to set up indirect feeder link to assist geostationary satellite.
43. a geostationary satellite comprises:
Antenna; With
Electronic system, it is configured to set up direct feeder link with feeder link frequency and satellite gateway,, determine that this signal of communication is to be intended for use in second geostationary satellite, and set up intersatellite link from the satellite gateway receiving communication signal by direct feeder link with second geostationary satellite.
44. according to the geostationary satellite of claim 43, wherein, chain road direction second geostationary satellite was transmitted signal of communication between electronic system also was arranged to via satellite.
45. a geostationary satellite comprises:
Antenna; With
Electronic system, it is arranged to second geostationary satellite and sets up intersatellite link,, determine whether this signal of communication is to be intended for use in satellite gateway, and set up direct feeder link from the second geostationary satellite receiving communication signal by this intersatellite link with second geostationary satellite.
46. according to the geostationary satellite of claim 45, wherein, electronic system also is arranged to by direct feeder link and transmits signal of communication to satellite gateway.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65514805P | 2005-02-22 | 2005-02-22 | |
| US60/655,148 | 2005-02-22 | ||
| US11/313,572 | 2005-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006800056566A Pending CN101129000A (en) | 2005-02-22 | 2006-01-18 | Satellites using inter-satellite links to create indirect feeder link paths |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105519011A (en) * | 2013-09-06 | 2016-04-20 | 高通股份有限公司 | Method for communication in a non-geostationary satellite network with a relay node located in the beams of two satellites and relaying data from the first to the second satellite according to the availability of an internet point ofpresence (IPP) |
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2006
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105519011A (en) * | 2013-09-06 | 2016-04-20 | 高通股份有限公司 | Method for communication in a non-geostationary satellite network with a relay node located in the beams of two satellites and relaying data from the first to the second satellite according to the availability of an internet point ofpresence (IPP) |
| CN105519011B (en) * | 2013-09-06 | 2019-02-26 | 高通股份有限公司 | Method and apparatus for the communication in native to this world geosynchronous satellite network |
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