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Publication numberUS20070129019 A1
Publication typeApplication
Application numberUS 11/610,264
Publication dateJun 7, 2007
Filing dateDec 13, 2006
Priority dateAug 10, 1999
Also published asUS7174127, US20030022625
Publication number11610264, 610264, US 2007/0129019 A1, US 2007/129019 A1, US 20070129019 A1, US 20070129019A1, US 2007129019 A1, US 2007129019A1, US-A1-20070129019, US-A1-2007129019, US2007/0129019A1, US2007/129019A1, US20070129019 A1, US20070129019A1, US2007129019 A1, US2007129019A1
InventorsDavid Otten, David Duckworth
Original AssigneeAtc Technologies, Llc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Internet communications systems and methods using different wireless links for inbound and outbound data
US 20070129019 A1
Abstract
A hybrid satellite communications system provides communications, particularly Internet access, to computer users. The hybrid satellite communications system includes a satellite system and a terrestrial communications system. The satellite system includes two transceivers. The first transceiver receives and transmits a first set of signals received from the terrestrial communications system to a plurality of user units. In reverse fashion, the satellite systems second transceiver receives a second set of signals in a second frequency band from the user units and transmits those signals back to the terrestrial communications system. The first set of signals (downlink signals) are of much higher frequency than the second set of signals (uplink signals). Preferably, the first set of signals are relayed by a Direct Broadcast System (DBS) satellite in a frequency band between 12.2 GHz and 12.9 GHz, while the second set of signals are relayed by a Mobile Satellite System (MSS) satellite operating between 1.0 GHz and 3.0 Ghz, or relayed by a terrestrial node operating between 0.8 and 2.0 Ghz. The differences in frequency between the first set of signals and second set of signals is considered optimal for the transmission and receipt of communications between a computer user with the Internet. Moreover, the present invention is capable of using the present communications infrastructures dedicated to the satellite transmission of television via DBS satellites, satellite cellular communications via MSS satellites, and radio communications via terrestrial cellular systems.
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Claims(19)
1. a user unit that provides internet access, comprising:
a wireless receiver that is configured to receive inbound data from an Internet service provider via a satellite; and
a wireless transmitter that is configured to wirelessly transmit outbound data to the Internet service provider via a wireless link that is independent of the satellite.
2. A user unit according to claim 1 wherein the wireless transmitter is configured to wirelessly transmit outbound data to the Internet service provider via a terrestrial wireless link that is independent of the satellite.
3. A user unit according to claim 1 wherein the wireless transmitter is configured to wirelessly transmit outbound data to the Internet service provider via a space-based wireless link that is independent of the satellite.
4. A user unit according to claim 1 wherein the satellite is a Direct Broadcast System (DBS) satellite.
5. A user unit according to claim 1 wherein the wireless receiver is a first wireless receiver and wherein the user unit further comprises:
a second wireless receiver that is configured to wirelessly receive inbound control data from the Internet service provider via the wireless link that is independent of the satellite.
6. A user unit according to claim 1:
wherein the wireless transmitter is configured to wirelessly transmit outbound data to the Internet service provider via the wireless link that is independent of the satellite in response to user input at the wireless terminal; and
wherein the wireless receiver is configured to receive inbound data from the Internet service provider via the satellite in response to receipt by the Internet service provider of the outbound data.
7. A method of operating a user unit comprising:
wirelessly transmitting outbound data via a wireless link in response to user input at the user unit; and
wirelessly receiving inbound data at the user unit in response to the outbound data that was transmitted, the inbound data being wirelessly received at the user unit via a satellite link that is independent of the wireless link.
8. A method according to claim 7 wherein the following are performed between wirelessly transmitting and wirelessly receiving:
receiving the outbound data at a data provider;
generating the inbound data at the data provider in response to receipt of the outbound data; and
transmitting the inbound data from the data provider to the satellite link.
9. A method according to claim 7 wherein the wireless link comprises a terrestrial wireless link.
10. A method according to claim 7 wherein the wireless link comprises a space-based wireless link that is independent of the satellite link.
11. A method according to claim 7 wherein the satellite link is a Direct Broadcast System (DBS) satellite link.
12. A method of providing Internet services by an Internet Service Provider (ISP) comprising:
receiving a request at the ISP from a user unit via a wireless link;
generating data at the ISP in response to the request that was received; and
transmitting the data from the ISP to the user unit via a satellite link that is independent of the wireless link.
13. A method according to claim 12 wherein the wireless link comprises a terrestrial wireless link.
14. A method according to claim 12 wherein the wireless link comprises a space-based wireless link that is independent of the satellite link.
15. A method according to claim 12 wherein the satellite link is a Direct Broadcast System (DBS) satellite link.
16. A user unit comprising:
a wireless transmitter that is configured to wirelessly transmit outbound data via a wireless link in response to user input at the user unit; and
a wireless receiver that is configured to wirelessly receive inbound data at the user unit in response to the outbound data that was transmitted, the inbound data being wirelessly received at the user unit via a satellite link that is independent of the wireless link.
17. A user unit according to claim 16 wherein the wireless link comprises a terrestrial wireless link.
18. A user unit according to claim 16 wherein the wireless link comprises a space-based wireless link that is independent of the satellite link.
19. A user unit according to claim 16 wherein the satellite link is a Direct Broadcast System (DBS) satellite link.
Description
    CROSS-REFERENCE TO RELATED APPLICATIONS
  • [0001]
    This application is a continuation of application Ser. No. 10/246,868, filed Sep. 17, 2002, entitled Data Communications Systems and Methods Using Different Wireless Links for Inbound and Outbound Data, now U.S. Pat. No. ______, which itself is a continuation-in-part of application Ser. No. 09/371,316, filed Aug. 10, 1999, entitled Hybrid Satellite Communication System, now U.S. Pat. No. 6,522,865, both of which are assigned to the assignee of the present invention, the disclosures of both of which are hereby incorporated herein by reference in their entirety as if set forth fully herein.
  • BACKGROUND OF THE INVENTION
  • [0002]
    The present invention relates to satellite communications systems. More particularly, the present invention relates to satellite communications systems providing Internet service to computer users.
  • [0003]
    Computer networking is rapidly becoming ubiquitous in present day society. Computer networks have grown from isolated connections among research scientists and universities to the “information superhighway” of today. Access to this superhighway is typically accomplished through the “Internet”. The Internet utilizes a transmission control protocol/Internet protocol (TCP/IP) communications system which is utilized by hundreds of millions of users worldwide.
  • [0004]
    Through the use of standardized formats, computer users can easily access and navigate through the abundance of information which is accessible through the Internet. This information includes not only research and news information but has now spread to commercial advertising and business communications which permit users to download images, video, sound clips and/or text documents relating to a company's products. This information is transmitted over the Internet in measurements commonly referred to as bits.
  • [0005]
    Conventionally, access to the Internet is achieved by using slow, terrestrial dial-up modems through commercial telephone systems such as the public system telephone network (PSTN). Unfortunately, the fastest transmission rate commonly available over the PSTN is 56K bits per second (bps). Because such transmission rates are prohibitively slow for some practices, such as the transmission of video information, additional systems have been devised including Integrated Services Digital Network (ISDN) and T1 systems which require special cabling to be constructed to the computer user. Unfortunately, ISDN and T1 communications systems are too expensive for the average computer user. Because it will take a long time and substantial expense to connect computer users to the Internet via highspeed transmission lines, such as fiber optic lines, it is desirable to implement some type of highspeed Internet communications system that could be rapidly and inexpensively implemented. Moreover, as explained above, the Internet is largely accessed through telephone lines and dedicated communication lines. Such infrastructure exists today only in developed countries. In undeveloped countries, communities separated by vast distances have limited telephone service, if any. Even where there is telephone service, the quality of the telephone connection is often poorly suited to support the transmission of digital data at a useable rate.
  • [0006]
    The lack of access to the Internet is rapidly becoming more of a problem as users have expanded beyond academics, researchers and computer enthusiasts, and it has become virtually mandatory for members of the general public to participate in the global community via the Internet. For example, physicians in developed countries now confer electronically over the Internet. School children search encyclopedias, obtain information from far away places and even “chat” with other children around the country. Those without access to the Internet are left educationally behind.
  • [0007]
    To overcome the deficiencies of the present Internet infrastructure, systems have been proposed which make use of satellite communications to access the Internet. For example, Direct TV, a subsidiary of Hughes Electronics, Inc., provides highspeed Internet access through their collection of Direct Broadcast System (DBS) satellites which were originally constructed to provide satellite television service. Unfortunately, the Direct TV system does not provide a communication link for the user to send information back to the Internet via the satellite. Accordingly, a computer user must utilize a separate terrestrial telephone line through the PSTN system or the like to provide communications to an Internet provider. Though the transmission rate from the computer user through the PSTN system to an Internet provider is substantially slower than the downlink from the DBS satellite, this system is generally acceptable as computer users generally receive (download) much greater amounts of data from the Internet than they transmit. Accordingly, it is generally acceptable for the computer user's uplink (transmission) rate to be substantially less than the computer user's download rate. However, the Direct TV system suffers from several disadvantages as a user must have both a satellite receiver and a connection to telephone service. In many portions of the globe, access to both a satellite dish and telephone line are unavailable.
  • [0008]
    In order to overcome this disadvantage, systems have been proposed which utilize a single satellite system for both the uplink and downlink of Internet data to a computer user. For example, an Iridium/Motorola cellular telephone system provides two-way Internet access at approximately 2.4K bps. Meanwhile, Inmersat has proposed a satellite cellular telephone system which will provide 64K bps of Internet access. Similarly, U.S. Pat. No. 5,912,883 issued to Herschberg as the inventor and assigned to WorldCom Systems, Inc., discloses a satellite communication system which optimally would permit 9.6K bps of Internet access. Unfortunately, these rates for transmission and receipt of data to the Internet are far too slow to be practical for many computer users. For example, the transmission of a few seconds of live action video would take literally hours to be transmitted from the Internet over these satellite systems.
  • [0009]
    Accordingly, there is a substantial need for a lowcost, highspeed system which provides access for the computer user to the Internet.
  • [0010]
    It would also be desirable if an Internet communication system were provided which could substantially utilize existing communications infrastructure.
  • [0011]
    Moreover, it would be particularly desirable to provide a communications system which could access the Internet which did not require the utilization of telephone lines or highspeed transmission cables. To this end, it would be even more desirable if the communication system provided the computer user with mobile access to the Internet and/or access to the Internet from remote areas around the world.
  • SUMMARY OF THE PRESENT INVENTION
  • [0012]
    Briefly, in accordance with the invention, we provide an improved apparatus and method for providing communications to a computer user or the like. More particularly, my invention is a hybrid satellite communications system which is particularly suitable for providing Internet access to a computer user. The hybrid satellite communications system includes one or more satellites, one or more terrestrial communication stations and a plurality of user units. The one or more satellites act as relay stations and include a first transceiver for receiving and transmitting a first set of RF signals in a first frequency band and a second transceiver for receiving and transmitting a second set of RF signals in a second frequency band. Preferably, the first frequency band is at a significantly higher frequency than the second frequency band.
  • [0013]
    In operation, the user units, typically including personal computers, transmit signals in the second frequency band to the orbiting satellite system. The second signals are then relayed by the satellite system back to terrestrial ground stations which are connected to an Internet provider by the PSTN system or the like. In this manner, a user's computer can access, send data or information to the Internet, via the second set of signals passing through the satellite system. In reverse manner, data from the Internet is transmitted to a computer user. The Internet Service Provider is connected to a terrestrial ground station which transmits the Internet data in the form of the first set of signals to the satellite system. The satellite system relays the first set of signals back to the computer user enabling the computer user to decode the Internet information to download images, video, sound clips, business advertising or the like. For purposes herein, the first set of signals will be referred to as “downlink signals” as they refer to the signals which are downlinked from the satellite to a computer user. Similarly, the second set of signals will be referred to herein as “uplink signals” as they refer to the signals which are transmitted from the computer user.
  • [0014]
    As stated above, the transmission rate from the user's computer through the satellite system to the Internet Service Provider is slower than the transmission rate of information provided from the Internet provider to the computer user. This is generally acceptable as computer users typically need to download much larger amounts of data from the Internet than they send.
  • [0015]
    In a preferred embodiment, the hybrid satellite communications system of the present invention transmits the downlink signal from the satellite system to the user's computer in X band and/or K band. More preferably, the hybrid satellite communications system uses a standard Ku band Direct Broadcast System (DBS) satellite to send the downlink signals from the Internet Service Provider to the computer user. DBS refers to satellite transmission of signals dedicated by the U.S. Federal Communications Commission in the electromagnetic spectrum from 12.2 GHz to 12.7 GHz for DBS broadcasting. This frequency band has been reserved primarily for the transmission of television signals. Meanwhile, it is preferred that the uplink signals from the user's computer to the Internet Service Provider be relayed by a Mobile Satellite System (MSS) satellite operating in L-band or S-band or both. More particularly, it is preferred that the return link be limited to the frequency band dedicated for mobile satellite communications between 1.0 GHz and 3.0 GHz, though between 1.9 GHz and 2.2 GHz is even more preferable.
  • [0016]
    In additional preferred embodiments, the hybrid satellite communication system includes at least two satellites, preferably a DBS satellite and an MSS satellite. A first satellite is provided for receiving and transmitting the downlink signals at the higher frequency band from the Internet Service Provider through the first satellite to the user's computer, while a second satellite is provided for receiving and transmitting the uplink signals at a much lower frequency band from the user's computer to the Internet service provider. As would be understood by those skilled in the art, one or more ground stations would typically be provided for relaying data between the first and second satellites and the Internet Service Provider.
  • [0017]
    In still an additional preferred embodiment, the hybrid satellite communications system includes a plurality of terrestrial nodes which cooperate with the second transceiver, which relays the uplink signals, to offload communications between the user's computer and the second transceiver. More particularly, the terrestrial nodes operate in similar manner to the second transceiver, such as an MSS satellite, and terrestrial communications system in that they relay uplink signals including Internet information from the user's computer to the Internet Service Provider. Depending on the number of computer user's on the system, atmospheric conditions, etc., instead of utilizing a second satellite for receiving the uplink signals from the computer user, the computer user transmits the uplink signals to terrestrial nodes which relays any Internet inquiries, information or data to the Internet Service Provider. In a preferred embodiment, the terrestrial nodes utilize a standard cellular telephone communication system which is connected to an Internet Service Provider by the PSTN. For example, where the computer user is capable of communicating with a terrestrial cellular telephone communications system, it would typically be less expensive to transmit the uplink signals to terrestrial nodes than to transmit the uplink signals to a second satellite transceiver. However, where the computer user is too distant from a terrestrial cellular telephone system to operate effectively, the computer user, automatically or based on manual instructions, transmits uplink signals to the orbiting satellite system. Of course, even where the computer user is in range and transmits uplink signals to a terrestrial node, it is an object of the present invention that the downlink signals still be relayed by the satellite system to the user's computer, as typical terrestrial cellular telephone systems operate at transmission rates too slow to be practical for most computer users.
  • [0018]
    Other aspects and advantages of the invention will become apparent from the following detailed description and the accompanying drawings illustrating by way of example the features of the present invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0019]
    FIG. 1 is a diagram showing an overview of the principal elements of the hybrid satellite communications system of the present invention;
  • [0020]
    FIG. 2 is a diagram illustrating the frequency sub-bands as allocated in a preferred embodiment of the present invention;
  • [0021]
    FIG. 3 is a block diagram showing the interrelationship between ground stations, satellite nodes and a computer user for providing communications between a computer user and an Internet Service Provider as practiced by the present invention;
  • [0022]
    FIG. 4 is a block diagram illustrating one embodiment of satellite signal processing as practiced by the present invention;
  • [0023]
    FIG. 5 illustrates a preferred embodiment of the present invention in which the satellite divides its territorial coverage into cells;
  • [0024]
    FIG. 6 is a block diagram illustrating a computer user of the hybrid satellite communications system of the present invention; and
  • [0025]
    FIG. 7 is block diagram illustrating a preferred embodiment of the hybrid satellite communications system of the present invention including a plurality of terrestrial nodes.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0026]
    While the present invention is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described the presently preferred embodiments of the invention with the understanding that the present disclosure is to be considered as an exemplification of the invention and is not intended to limit the invention to the specific embodiments illustrated.
  • [0027]
    Referring to FIGS. 1-3, the present invention is directed to a hybrid communications system which is particularly adapted to providing Internet service to a computer user. The hybrid satellite communications system includes a plurality of user units 1, each typically including a personal computer, a satellite system and a terrestrial communications system. The satellite system includes a first transceiver 6 for receiving downlinked signals from the terrestrial communications system and for transmitting those downlinked signals to the user's computer 1. The satellite system further includes a second transceiver 2 for receiving uplink signals 36 from a user's computer 1 and for transmitting those uplink signals back to the terrestrial communications system. As shown in FIGS. 1 and 3, preferably the terrestrial communications system includes separate ground stations 3 and 5 for receiving the uplink signals relayed by satellite 2 and for transmitting downlink signals relayed to the user's computer by satellite 6, respectively. The terrestrial communications system, as shown with ground stations 3 and 5, is connected to an Internet Service Provider such as Yahoo, CompuServe, AOL, Earthlink, etc. through the PSTN system or similar infrastructure known to those skilled in the art.
  • [0028]
    Of importance to the practice of the present invention, the downlink signals 30 are at a substantially higher frequency than the uplink signals 36. In order to overcome the disadvantages of the prior art, which provides either very slow Internet access or requires both a satellite link and a connection to the commercial telephone system, the present invention is a highly efficient hybrid communications system in which the downlink signals are preferably transmitted in X-band and/or K-band while the uplink signals are transmitted in L-band and/or S-band. For purposes of the present invention, these bands are defined as follows.
    Band Frequency (GHz) Wavelength (cm)
    P 0.225-0.390 133.3-76.9 
    L 0.390-1.550 76.9-19.3
    S 1.55-5.20 19.3-5.77
    X  5.20-10.90 5.77-2.75
    K 10.90-36.00  2.75-0.834
    Q 36.0-46.0 0.834-0.652
    V  46.0-56.00 0.652-0.536
    W  56.0-100.00 0.536-0.300

    * C Band includes 3.90-6.20 GHz
  • [0029]
    Even more preferably, the downlink signals are provided by a DBS satellite 6 transmitting at between 12.2 GHz and 12.9 GHz while the uplink signals are transmitted at between 1.0 GHz and 3.0 GHz to an MSS satellite 2. The use of two satellites which transmit and receive signals at substantially different frequency bands is ideal for practicing the present invention as Internet users typically require substantially higher frequency transmission rates to receive information from the Internet than to transmit information to the Internet, as computer users typically download far greater amounts of information from the Internet than they send.
  • [0030]
    Referring to FIG. 2, the allocated frequency band 26 of the hybrid communications system is divided into two primary sub-bands 25 and 27. Sub-band 27 is dedicated to low frequency communication between the user's computer 1 and MSS satellite 2 and includes three (3) lesser sub-bands, outbound calling and command sub-band 32, inbound satellite sub-band 36 and inbound calling and tracking sub-band 33. The frequency band between the user's computer 1 and MSS satellite 2 typically requires three (3) sub-bands as the MSS satellite will typically operate using a time division multiple access (TDMA) or code division multiple access (CDMA) protocol which require synchronization and tracking which, in turn, require communication between the computer user 1 and MSS satellite through sub-bands 32 and 33. When the computer user wishes to transmit data or information to the Internet Service Provider 4, this information is transmitted in the frequency sub-band designated inbound satellite 36.
  • [0031]
    OS: Outbound Satellite 30 (satellite to computer user)
  • [0032]
    OC: Outbound Calling and Command 32 (satellite to computer user)
  • [0033]
    IS: Inbound Satellite 36 (computer user to satellite)
  • [0034]
    IC: Inbound Calling and Tracking 33 (computer user to node)
  • [0035]
    Meanwhile, communication between the DBS satellite 6 and the user's computer 1 would typically be transmitted through frequency division multiple access (FDMA) which does not require two-way synchronization and tracking. Accordingly, the entire high frequency sub-band 25 can be dedicated to the transmission of Internet information on the sub-band designated outbound satellite 30.
  • [0036]
    Referring back to FIGS. 1 and 3, in operation, the user 1 will utilize a first fixed antenna with a moderate gain to initiate the communications to the Internet provider. A user wishing to access the Internet simply instructs his computer to dial the number of the Internet Service Provider, sending the call. Typically, this is done automatically using his computer by means well known in the art. Thereby an incoming call sequence is initiated in the IC sub-band. This call is heard by the MSS satellite 2 which forwards the call to the MSS ground station 3. The call handling element then initiates a handshaking function with the calling unit over the OC 32 and IC 33 sub-bands, leading finally to transition to the establishment of the call to the Internet Service Provider 4. This link is through the MSS satellite 2 using, in one embodiment, either L- or S-band frequencies. Preferably, the antenna used for this link would be a yagi antenna with a gain of about 12 db. This antenna has a beamwidth of about 60 which is very easy to install. The resulting digital communication can take place at varying bit rates up to approximately 2 megabits per second. Typically, these would be short bursts since the user generally sends less information then he receives. The signal is then processed in the MSS ground station 3 which sends it to the Internet Service Provider 4. The Internet Service Provider 4 automatically processes the request by means well known in the art and sends the desired information to the DBS ground station which processes the signal and sends it to the DBS satellite by means well known in the art. The DBS satellite sends the signal to the user. The user receives the signal by means of a standard 18″ DBS receive only antenna. For simplicity, as shown in FIGS. 1 & 3, the user's computer includes two antennas, with a first antenna for communication with the MSS satellite and the second antenna for receiving signals from the DBS satellite. However, as would be understood by those skilled in the art, these two antennas may be combined in a single antenna structure for communicating with both the MSS satellite and the DBS satellite.
  • [0037]
    Referring also to FIG. 3, a block diagram is shown of a typical user unit 1 to MSS satellite 2 to MSS ground station 3 communication and the processing involved in the user unit 1 and the MSS ground station 3. In placing a call for example, the user's computer 1 is commanded to dial the Internet Service Provider 4 telephone number as previously entered by the user. After confirming a display of the number dialed, the computer sends the call signal. This signal is processed through the transmitter processing circuitry 66, which if transmitted by CDMA protocol, includes spreading the signal using a calling spread code. The signal is radiated by the moderate gain antenna 68 and received by the MSS satellite 2 through its narrow beamwidth antenna 62. The satellite processes the received signal as will be described below and sends them to the MSS ground station by way of its backhaul antenna 70. On receive, the antenna 68 of the user unit 1 receives the signal and the receiver processor 72 processes the outbound control signal 32.
  • [0038]
    The MSS ground station 3 receives the signal at its antenna 71, applies it to a circulator 73, amplifies 74, frequency demultiplexes 76 the signal separating off the composite signal which includes the signal from the user shown in FIG. 3, splits it 78 off to one of a bank of code correlators, each of which comprises a mixer 80 for removing the spreading and identification codes, an AGC amplifier 82, the FECC demodulator 84, a demultiplexer 86 and finally the signal is then routed to the appropriate land line, such as a commercial telephone system, for example, the PSTN. Transmission by the MSS ground station 3 is essentially the reverse of the above described reception operation.
  • [0039]
    Referring now to FIG. 4, the satellite transceiver 90 of the MSS satellite 2 is shown in block diagram form. Preferably, a circulator/diplexer 92 receives the uplink signal and applies it to an L-band or S-band amplifier 94 as appropriate. The signals from all the M satellite cells within a “cluster” are frequency multiplexed 96 into a single composite K-band backhaul signal occupying M times the bandwidth of an individual L-/S-band mobile link channel. The composite signal is then split 98 into N parts, separately amplified 100, and beamed through a second circulator 102 to N separate satellite ground cells. This general configuration supports a number of particular configurations various of which may be best adapted to one or another situation depending on system optimization which for example may include considerations related to regional land line long distance rate structure, frequency allocation and subscriber population. Thus, for a low density rural area, one may utilize an M-to-1 (M>1, N=1) cluster configuration of M contiguous cells served by a single common satellite ground node with M limited by available bandwidth. In order to provide high-value, Internet service between metropolitan areas, already or best covered for local calling by ground cellular technology, an M-to-M configuration would provide an “inter-metropolitan bus” which would tie together all occupants of such M satellite cells as if in a single local calling region. To illustrate, the same cells (for example, Seattle, Los Angeles, Omaha and others) comprising the cluster of M user cells on the left side of FIG. 4, are each served by corresponding backhaul beams on the right side of FIG. 4.
  • [0040]
    Preferably, MSS satellite 2 and DBS satellite make use of the highest feasible satellite antenna gain. In one embodiment, power gain on the order of 45 dB and beamwidth of under 1 are envisioned. This is depicted in FIG. 5 and is accomplished by an antenna size of approximately 20 meters for the MSS satellite. The use of such narrow beams also permits a far more efficient use of spectrum, the other limited commodity, since spectrum can be reused many times with a large number of beams. In the case of the DBS antenna, in one embodiment, an antenna with multiple narrow beams with each bandwidth of under 1 as depicted in FIG. 5 is used to reduce satellite power and to increase the frequency efficiency.
  • [0041]
    Referring to FIG. 6, the signals from the DBS satellite are received by the user's DBS antenna typically an 18″ diameter dish and focused on a Low Noise Block downconverter with integrated Feed (LNBF). Signals go from the LNBF to the DBS receiver 50 where they are amplified, decoded and processed. Where the downlink signal 30 includes both television signals 52 and Internet signals 54, the DBS receiver includes a splitter which separates the TV signals 52 and Internet signals 54 for transmission to respective television 56 and computer 1. The separation of the TV signal and Internet signal can be accomplished by those skilled in the art and is not discussed further herein. The Internet signals addressed to this particular user are then sent to his computer.
  • [0042]
    Referring to FIG. 7, in an additional preferred embodiment, the hybrid satellite communications system includes a plurality of terrestrial nodes 57. Preferably, the terrestrial nodes 57 are conventional communications cell sites forming a terrestrial radio system. Suitable communications systems include, but are not limited to, conventional cellular operating in the 0.8-0.9 Ghz range, PCS (Personal Communications Services) operating in the 1.5-2.0 Ghz range, GSM 1 operating at approximately 0.9 MHz range, or GSM 2 operating at approximately 1.8 MHz. Though various protocols known to those skilled in the art may be employed, the uplink signals are preferably transmitted in a digital form, such as TDMA (time division multiple access), CDMA (code division multiple access) and/or GSM (Global System Mobile) standards. The terrestrial cell sites are, in turn, connected to the terrestrial communications system (PSTN) for relaying signals to the Internet.
  • [0043]
    The terrestrial nodes operate in similar manner to the MSS satellite 2 and MSS ground stations 3 shown in FIGS. 1 and 3 in that they relay uplink signals 36 from the user's computer 1 to the terrestrial nodes, which then are relayed to an Internet Service Provider 4 through the PSTN. More particularly, where a user's computer is capable of communicating directly with a terrestrial node, in a preferred embodiment, transmission of the uplink signals 3 is made directly to a terrestrial node, instead of to an MSS satellite 2, in a frequency band substantially lower than the transmission of downlink signal by the DBS satellite to the user's computer. Preferably, the uplink signals are transmitted by the user units to the terrestrial nodes in L band or S band, while the downlink signals are received by the user units in X band or K band. Even more preferable, the uplink signals are transmitted to the terrestrial nodes at below 2.0 GHz, while the downlink signals are received at 12.0 GHz-13.0 GHz.
  • [0044]
    Typically it would be less expensive for a user's computer to communicate directly with a terrestrial node to transmit information or data to an Internet Service Provider than to transmit through an MSS satellite or the like. Thus, where an uplink connection is available with a terrestrial node, it is preferred that the user unit transmit its uplink system to a terrestrial node, while concurrently receiving the downlink signals transmitted by a DBS satellite. However, for this embodiment of the invention, where it is impossible to communicate with a terrestrial node, for example due to too many users on the system or due to terrestrial interference or weather fade, the computer's user may switch, automatically or based on instructions by the user, to transmitting the uplink signals to the MSS satellite 2.
  • [0045]
    The present invention provides for an inexpensive and simple way to provide communications using a computer. Moreover, the present invention is particularly suitable for use with connecting computers, and particularly mobile computers, with the Internet, though it is not intended that the present invention be limited thereto. While several particular forms of the invention have been illustrated and described, it will be apparent that various modifications can be made without departing from the spirit and scope of the invention. Accordingly, it is not intended that the invention be limited except by the following claims. Having described my invention in such terms as to enable those skilled in the art to understand and practice it, and having defined and identified the presently preferred embodiments thereof, we claim:
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4901307 *Oct 17, 1986Feb 13, 1990Qualcomm, Inc.Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US5303286 *Mar 29, 1991Apr 12, 1994Space Systems/Loral, Inc.Wireless telephone/satellite roaming system
US5339330 *Oct 24, 1991Aug 16, 1994David D. OttenIntegrated cellular communications system
US5394561 *Jul 22, 1993Feb 28, 1995Motorola, Inc.Networked satellite and terrestrial cellular radiotelephone systems
US5446756 *Oct 28, 1993Aug 29, 1995Celsat America, Inc.Integrated cellular communications system
US5511233 *Apr 5, 1994Apr 23, 1996Celsat America, Inc.System and method for mobile communications in coexistence with established communications systems
US5612703 *May 19, 1995Mar 18, 1997Celsat America, Inc.position determination in an integrated cellular communications system
US5619525 *Jun 6, 1995Apr 8, 1997Globalstar L.P.Closed loop power control for low earth orbit satellite communications system
US5631898 *May 16, 1995May 20, 1997Ericsson Inc.Cellular/satellite communications system with improved frequency re-use
US5634190 *Jun 6, 1995May 27, 1997Globalstar L.P.Low earth orbit communication satellite gateway-to-gateway relay system
US5708963 *Feb 24, 1995Jan 13, 1998Scientific-Atlanta, Inc.Method and apparatus for using satellites for reverse path communication in direct-to-home subscription information systems
US5761605 *Oct 11, 1996Jun 2, 1998Northpoint Technology, Ltd.Apparatus and method for reusing satellite broadcast spectrum for terrestrially broadcast signals
US5765098 *Jul 8, 1996Jun 9, 1998Agence Spatiale EuropeenneMethod and system for transmitting radio signals between a fixed terrestrial station and user mobile terminals via a network of satellites
US5878329 *Jan 8, 1997Mar 2, 1999Celsat America, Inc.Power control of an integrated cellular communications system
US5884142 *Apr 15, 1997Mar 16, 1999Globalstar L.P.Low earth orbit distributed gateway communication system
US5907541 *Oct 20, 1997May 25, 1999Lockheed Martin Corp.Architecture for an integrated mobile and fixed telecommunications system including a spacecraft
US5912883 *Nov 1, 1996Jun 15, 1999Worldcomm Systems, Inc.System for remote access to computer network
US5926758 *Aug 26, 1996Jul 20, 1999Leo One Ip, L.L.C.Radio frequency sharing methods for satellite systems
US5937332 *Mar 21, 1997Aug 10, 1999Ericsson, Inc.Satellite telecommunications repeaters and retransmission methods
US5940753 *Oct 6, 1997Aug 17, 1999Celsat America, Inc.Controller for cellular communications system
US6011951 *Aug 22, 1997Jan 4, 2000Teledesic LlcTechnique for sharing radio frequency spectrum in multiple satellite communication systems
US6023605 *Sep 8, 1997Feb 8, 2000Fujitsu LimitedDual layer satellite communications system and geostationary satellite therefor
US6052560 *Oct 15, 1997Apr 18, 2000Ericsson IncSatellite system utilizing a plurality of air interface standards and method employing same
US6052586 *Aug 29, 1997Apr 18, 2000Ericsson Inc.Fixed and mobile satellite radiotelephone systems and methods with capacity sharing
US6058307 *Feb 12, 1998May 2, 2000Amsc Subsidiary CorporationPriority and preemption service system for satellite related communication using central controller
US6067442 *Mar 18, 1997May 23, 2000Globalstar L.P.Satellite communications system having distributed user assignment and resource assignment with terrestrial gateways
US6072430 *Apr 6, 1998Jun 6, 2000Ico Services Ltd.Satellite terminal position determination
US6078810 *Jun 12, 1997Jun 20, 2000Motorola, Inc.Multiple-tier satelite communication system and method of operation thereof
US6085094 *Aug 27, 1998Jul 4, 2000Nortel Networks CorporationMethod for optimizing spectral re-use
US6088571 *Jan 30, 1998Jul 11, 2000Motorola, Inc.Method and apparatus for multi-constellation satellite broadcast with error correction
US6091933 *Jan 3, 1997Jul 18, 2000Globalstar L.P.Multiple satellite system power allocation by communication link optimization
US6097752 *Apr 4, 1997Aug 1, 2000Globalstar L.P.Closed loop power control for low earth orbit satellite communications system
US6101385 *Oct 9, 1997Aug 8, 2000Globalstar L.P.Satellite communication service with non-congruent sub-beam coverage
US6108561 *Mar 1, 1999Aug 22, 2000Celsat America, Inc.Power control of an integrated cellular communications system
US6169878 *Dec 16, 1997Jan 2, 2001Northpoint Technology, Ltd.Apparatus and method for transmitting terrestrial signals on a common frequency with satellite transmissions
US6198730 *Oct 13, 1998Mar 6, 2001Motorola, Inc.Systems and method for use in a dual mode satellite communications system
US6198921 *Nov 16, 1998Mar 6, 2001Emil YoussefzadehMethod and system for providing rural subscriber telephony service using an integrated satellite/cell system
US6201797 *Dec 12, 1997Mar 13, 2001At&T Wireless Services Inc.High bandwidth delivery and internet access for airborne passengers
US6201967 *Sep 9, 1997Mar 13, 2001Ico Services LtdCommunications apparatus and method
US6233463 *Feb 9, 1998May 15, 2001Globalstar L.P.Automatic satellite terrestrial mobile terminal roaming system and method
US6240124 *Nov 2, 1999May 29, 2001Globalstar L.P.Closed loop power control for low earth orbit satellite communications system
US6253080 *Jul 8, 1999Jun 26, 2001Globalstar L.P.Low earth orbit distributed gateway communication system
US6256497 *Mar 24, 1998Jul 3, 2001Ico Services LtdInterworking between telecommunications networks
US6339707 *Sep 14, 1999Jan 15, 2002Hughes Electronics CorporationMethod and system for providing wideband communications to mobile users in a satellite-based network
US6418147 *Jan 21, 1998Jul 9, 2002Globalstar LpMultiple vocoder mobile satellite telephone system
US6519252 *Dec 31, 1997Feb 11, 2003Ericsson Inc.System and method for connecting a call to a mobile subscriber connected to the Internet
US6522865 *Aug 10, 1999Feb 18, 2003David D. OttenHybrid satellite communications system
US6684057 *Feb 12, 2002Jan 27, 2004Mobile Satellite Ventures, LpSystems and methods for terrestrial reuse of cellular satellite frequency spectrum
US6735437 *Jun 26, 1998May 11, 2004Hughes Electronics CorporationCommunication system employing reuse of satellite spectrum for terrestrial communication
US6760778 *May 14, 1999Jul 6, 2004At&T Wireless Services, Inc.System and method for communication between airborne and ground-based entities
US6775251 *Sep 17, 1998Aug 10, 2004Globalstar L.P.Satellite communication system providing multi-gateway diversity and improved satellite loading
US6785543 *Jan 29, 2003Aug 31, 2004Mobile Satellite Ventures, LpFilters for combined radiotelephone/GPS terminals
US6856787 *May 20, 2002Feb 15, 2005Mobile Satellite Ventures, LpWireless communications systems and methods using satellite-linked remote terminal interface subsystems
US6859652 *Dec 4, 2001Feb 22, 2005Mobile Satellite Ventures, LpIntegrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US6879829 *Apr 20, 2004Apr 12, 2005Mobile Satellite Ventures, LpSystems and methods for handover between space based and terrestrial radioterminal communications, and for monitoring terrestrially reused satellite frequencies at a radioterminal to reduce potential interference
US6892068 *Aug 1, 2001May 10, 2005Mobile Satellite Ventures, LpCoordinated satellite-terrestrial frequency reuse
US6937857 *Dec 23, 2002Aug 30, 2005Mobile Satellite Ventures, LpSystems and methods for reducing satellite feeder link bandwidth/carriers in cellular satellite systems
US6999720 *Jun 26, 2002Feb 14, 2006Atc Technologies, LlcSpatial guardbands for terrestrial reuse of satellite frequencies
US7006789 *Aug 22, 2002Feb 28, 2006Atc Technologies, LlcSpace-based network architectures for satellite radiotelephone systems
US7031702 *Aug 22, 2002Apr 18, 2006Atc Technologies, LlcAdditional systems and methods for monitoring terrestrially reused satellite frequencies to reduce potential interference
US7039400 *May 28, 2002May 2, 2006Atc Technologies, LlcSystems and methods for monitoring terrestrially reused satellite frequencies to reduce potential interference
US7062267 *Aug 22, 2002Jun 13, 2006Atc Technologies, LlcMethods and systems for modifying satellite antenna cell patterns in response to terrestrial reuse of satellite frequencies
US7062268 *Jan 13, 2004Jun 13, 2006Aircell, Inc.Overlapping spectrum cellular communication networks
US20030003815 *Dec 20, 2000Jan 2, 2003Yoshiko YamadaCommunication satellite/land circuits selection communications system
US20030022625 *Sep 17, 2002Jan 30, 2003Otten David D.Hybrid satellite communications system
US20030054762 *Aug 22, 2002Mar 20, 2003Karabinis Peter D.Multi-band/multi-mode satellite radiotelephone communications systems and methods
US20030068978 *Aug 22, 2002Apr 10, 2003Karabinis Peter D.Space-based network architectures for satellite radiotelephone systems
US20030149986 *Feb 25, 2003Aug 7, 2003Mayfield William W.Security system for defeating satellite television piracy
US20030153308 *Jan 29, 2003Aug 14, 2003Karabinis Peter D.Staggered sectorization for terrestrial reuse of satellite frequencies
US20040072539 *Jun 18, 2003Apr 15, 2004Monte Paul A.Resource allocation to terrestrial and satellite services
US20040102156 *Nov 26, 2002May 27, 2004Loner Patrick J.Systems and methods for sharing uplink bandwidth among satellites in a common orbital slot
US20040121727 *Dec 8, 2003Jun 24, 2004Karabinis Peter D.Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode
US20040142660 *Jan 5, 2004Jul 22, 2004Churan Gary G.Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates
US20050026606 *Jun 28, 2004Feb 3, 2005Karabinis Peter D.Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference
US20050037749 *Jul 14, 2004Feb 17, 2005Karabinis Peter D.Intra-and/or inter-system interference reducing systems and methods for satellite communications systems
US20050041619 *Aug 9, 2004Feb 24, 2005Karabinis Peter D.Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers
US20050064813 *Sep 2, 2004Mar 24, 2005Karabinis Peter D.Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint
US20050079816 *Oct 14, 2004Apr 14, 2005Karabinis Peter D.Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US20050090256 *Sep 23, 2004Apr 28, 2005Santanu DuttaSystems and methods for mobility management in overlaid mobile communications systems
US20050118948 *Dec 23, 2004Jun 2, 2005Karabinis Peter D.Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode
US20050136836 *Jan 14, 2005Jun 23, 2005Karabinis Peter D.Additional intra-and/or inter-system interference reducing systems and methods for satellite communications systems
US20050164700 *Jan 14, 2005Jul 28, 2005Karabinis Peter D.Satellite with different size service link antennas and radioterminal communication methods using same
US20050164701 *Mar 1, 2005Jul 28, 2005Karabinis Peter D.Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US20050170834 *Mar 31, 2005Aug 4, 2005Santanu DuttaSystems and methods for handover between space based and terrestrial radioterminal communications
US20050181786 *Mar 14, 2005Aug 18, 2005Karabinis Peter D.Coordinated satellite-terrestrial frequency reuse
US20060040613 *Aug 10, 2005Feb 23, 2006Mobile Satellite Venturs, LpSatellite-band spectrum utilization for reduced or minimum interference
US20060040657 *Sep 30, 2005Feb 23, 2006Atc Technologies, LlcSpace-based network architectures for satellite radiotelephone systems
US20060040659 *Oct 18, 2005Feb 23, 2006Atc Technologies, LlcSpatial guardbands for terrestrial reuse of satellite frequencies
US20060094352 *Nov 2, 2004May 4, 2006Karabinis Peter DApparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations
US20060094420 *Nov 2, 2004May 4, 2006Karabinis Peter DMulti frequency band/multi air interface/multi spectrum reuse cluster size/multi cell size satellite radioterminal communicaitons systems and methods
US20060105707 *Nov 16, 2005May 18, 2006Mobile Satellite Ventures, LpSatellite communications systems, components and methods for operating shared satellite gateways
US20060111041 *Dec 15, 2005May 25, 2006Karabinis Peter DAggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods
US20060111056 *Nov 17, 2005May 25, 2006Santanu DuttaElectronic antenna beam steering using ancillary receivers and related methods
US20060135058 *Dec 1, 2005Jun 22, 2006Atc Technologies, LlcLocation-based broadcast messaging for radioterminal users
US20060135060 *Feb 16, 2006Jun 22, 2006Atc Technologies, LlcMethods and systems for configuring satellite antenna cell patterns in response to terrestrial use of satellite frequencies
US20060135070 *Dec 6, 2005Jun 22, 2006Atc Technologies, LlcPrediction of uplink interference potential generated by an ancillary terrestrial network and/or radioterminals
US20060165120 *Jan 27, 2005Jul 27, 2006Karabinis Peter DSatellite/terrestrial wireless communications systems and methods using disparate channel separation codes
US20060189274 *Dec 20, 2005Aug 24, 2006Karabinis Peter DSatellite communications systems and methods using diverse polarizations
US20060189275 *Dec 21, 2005Aug 24, 2006Karabinis Peter DSatellites using inter-satellite links to create indirect feeder link paths
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7414987 *May 5, 2005Aug 19, 2008International Business Machines CorporationWireless telecommunications system for accessing information from the world wide web by mobile wireless computers through a combination of cellular telecommunications and satellite broadcasting
US7626959 *Jun 23, 2008Dec 1, 2009International Business Machines CorporationWireless telecommunications system for accessing information from the world wide web by mobile wireless computers through a combination of cellular telecommunications and satellite broadcasting
US7696924Apr 13, 2010Atc Technologies, LlcRadioterminals and associated operating methods that transmit position information responsive to change/rate of change of position
US7783287Aug 24, 2010Atc Technologies, LlcSatellite radiotelephone systems, methods, components and devices including gated radiotelephone transmissions to ancillary terrestrial components
US7792488Sep 7, 2010Atc Technologies, LlcSystems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength
US7796985Sep 14, 2010Atc Technologies, LlcSystems and methods for packing/unpacking satellite service links to/from satellite feeder links
US7801520Sep 21, 2010Atc Technologies, LlcMethods and systems for configuring satellite antenna cell patterns in response to terrestrial use of satellite frequencies
US7856211Oct 10, 2008Dec 21, 2010Atc Technologies, LlcBroadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments
US7890050Feb 15, 2011Atc Technologies, LlcMethods of reducing interference including determination of feeder link signal error and related systems
US7890097Aug 12, 2009Feb 15, 2011Atc Technologies, LlcSystems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference
US7899002Aug 13, 2009Mar 1, 2011Atc Technologies, LlcSatellite/terrestrial wireless communications systems and methods using disparate channel separation codes
US7917135Oct 13, 2009Mar 29, 2011Atc Technologies, LlcSatellite communications apparatus and methods using asymmetrical forward and return link frequency reuse
US7953373Oct 8, 2009May 31, 2011Atc Technologies, LlcPrediction of uplink interference potential generated by an ancillary terrestrial network and/or radioterminals
US7957694Jun 7, 2011Atc Technologies, LlcSatellite-band spectrum utilization for reduced or minimum interference
US7970346Jun 28, 2011Atc Technologies, LlcMethods of reducing interference including calculation of weights based on errors and related systems
US7974575Jul 5, 2011Atc Technologies, LlcMethods of reducing interference including applying weights to provide correction signals and related systems
US7974619Jul 5, 2011Atc Technologies, LlcSystems and methods for mobility management in overlaid mobile communications systems
US7978135Jul 12, 2011Atc Technologies, LlcAntenna beam forming systems/methods using unconstrained phase response
US7999735Aug 16, 2011Atc Technologies, LlcRadioterminals and associated operating methods that transmit position information responsive to rate of change of position
US8023954Sep 20, 2011Atc Technologies, LlcSystems and methods for controlling a cellular communications system responsive to a power level associated with a wireless transmitter
US8031646Oct 4, 2011Atc Technologies, LlcSystems, methods and devices for reusing spectrum of another operator
US8045975Oct 25, 2011Atc Technologies, LlcSystems and methods for inter-system sharing of satellite communications frequencies within a common footprint
US8055257Oct 30, 2009Nov 8, 2011Atc Technologies, LlcSystems and methods with different utilization of satellite frequency bands by a space-based network and an ancillary terrestrial network
US8064378Apr 10, 2008Nov 22, 2011Atc Technologies, LlcLocation-based broadcast messaging for radioterminal users
US8064824Jun 24, 2008Nov 22, 2011Atc Technologies, LlcSystems and methods for reducing power robbing impact of interference to a satellite
US8068828Nov 29, 2011Atc Technologies, LlcSystems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode
US8073394Dec 6, 2011Atc Technologies, LlcPrediction of uplink interference potential generated by an ancillary terrestrial network and/or radioterminals
US8078101Dec 13, 2011Atc Technologies, LlcSystems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode
US8131293May 6, 2011Mar 6, 2012Atc Technologies, LlcSystems and methods for mobility management in overlaid mobile communications systems
US8145126May 10, 2011Mar 27, 2012Atc Technologies, LlcSatellite-band spectrum utilization for reduced or minimum interference
US8169955Jun 7, 2007May 1, 2012Atc Technologies, LlcSystems and methods for orthogonal frequency division multiple access (OFDMA) communications over satellite links
US8193975Jun 5, 2012Atc TechnologiesIterative antenna beam forming systems/methods
US8238818Dec 22, 2008Aug 7, 2012Atc Technologies, LlcSatellite communications systems and methods using radiotelephone location-based beamforming
US8238819Sep 21, 2011Aug 7, 2012Atc Technologies, LlcSystems and methods for inter-system sharing of satellite communications frequencies within a common footprint
US8265637Feb 24, 2009Sep 11, 2012Atc Technologies, LlcSystems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference
US8270898Sep 18, 2012Atc Technologies, LlcSatellite-band spectrum utilization for reduced or minimum interference
US8274925Jan 5, 2010Sep 25, 2012Atc Technologies, LlcRetaining traffic channel assignments for satellite terminals to provide lower latency communication services
US8285225Oct 9, 2012Atc Technologies, LlcBroadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments
US8285278Aug 13, 2009Oct 9, 2012Atc Technologies, LlcSystems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode
US8339308Mar 15, 2010Dec 25, 2012Atc Technologies LlcAntenna beam forming systems, methods and devices using phase adjusted least squares beam forming
US8340592Dec 25, 2012Atc Technologies, LlcRadioterminals and operating methods that receive multiple measures of information from multiple sources
US8369775Aug 28, 2009Feb 5, 2013Atc Technologies, LlcIntegrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US8369776Oct 14, 2009Feb 5, 2013Atc Technologies, LlcApparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations
US8412126Apr 1, 2010Apr 2, 2013Atc Technologies, LlcCommunications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction
US8433241Apr 30, 2013Atc Technologies, LlcSystems, methods and devices for overlaid operations of satellite and terrestrial wireless communications systems
US8520561Feb 3, 2010Aug 27, 2013Atc Technologies, LlcSystems, methods and network components that provide different satellite spot beam return carrier groupings and reuse patterns
US8526941Jun 28, 2007Sep 3, 2013Atc Technologies, LlcApparatus and methods for mobility management in hybrid terrestrial-satellite mobile communications systems
US8571499 *Oct 12, 2010Oct 29, 2013Harold KirkpatrickWireless terrestrial communications systems using a line-of-sight frequency for inbound data and a non-line-of-sight frequency for outbound data
US8576769Sep 28, 2010Nov 5, 2013Atc Technologies, LlcSystems and methods for adaptive interference cancellation beamforming
US8655398Mar 3, 2011Feb 18, 2014Atc Technologies, LlcCommunications systems and methods including emission detection
US8744360Jan 19, 2010Jun 3, 2014Atc Technologies, Inc.Adaptive beam forming with multi-user detection and interference reduction in satellite communication systems and methods
US9037078Dec 20, 2012May 19, 2015Atc Technologies, LlcApparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations
US20060040613 *Aug 10, 2005Feb 23, 2006Mobile Satellite Venturs, LpSatellite-band spectrum utilization for reduced or minimum interference
US20060251003 *May 5, 2005Nov 9, 2006Dietz Timothy AWireless telecommunications system for accessing information from the world wide web by mobile wireless computers through a combination of cellular telecommunications and satellite broadcasting
US20070087690 *Oct 4, 2006Apr 19, 2007Atc Technologies, LlcAdditional aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods
US20080032690 *Oct 3, 2007Feb 7, 2008Atc Technologies, LlcMethods and systems for configuring satellite antenna cell patterns in response to terrestrial use of satellite frequencies
US20080182572 *Jun 28, 2007Jul 31, 2008Atc Technologies,LlcApparatus and Methods for Mobility Management in Hybrid Terrestrial-Satellite Mobile Communications Systems
US20080274733 *Jun 23, 2008Nov 6, 2008International Business Machines CorporationWireless Telecommunications System For Accessing Information From The World Wide Web by Mobile Wireless Computers Through A Combination of Cellular Telecommunications and Satellite Broadcasting
US20080287124 *May 13, 2008Nov 20, 2008Atc Technologies, LlcSystems, methods and devices for reusing spectrum of another operator
US20090011704 *Jun 24, 2008Jan 8, 2009Mobile Satellite Ventures, LpSystems and methods for reducing power robbing impact of interference to a satellite
US20090029696 *Sep 26, 2008Jan 29, 2009Atc Technologies, LlcSystems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference
US20090040100 *Oct 10, 2008Feb 12, 2009Atc Technologies, LlcRadioterminals and associated operating methods that transmit position information responsive to change/rate of change of position
US20090042516 *Oct 10, 2008Feb 12, 2009Atc Technologies, LlcBroadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments
US20090061894 *Nov 10, 2008Mar 5, 2009Atc Technologies, LlcMobile communications systems, methods and devices based on proximity to device in a building
US20090075645 *Nov 14, 2008Mar 19, 2009Atc Technologies, LlcTerrestrial Communications Networks That Transmit Using Circular Polarization
US20090137203 *Dec 22, 2008May 28, 2009Atc Technologies, LlcSatellite communications systems and methods using radiotelephone location-based beamforming
US20090156154 *Feb 25, 2009Jun 18, 2009Atc Technologies, LlcSatellite-band spectrum utilization using receiver filters to reduce interference
US20090170428 *Mar 9, 2009Jul 2, 2009Atc Technologies, LlcMethods of Reducing Interference Including Applying Weights to Provide Correction Signals and Related Systems
US20090170429 *Mar 9, 2009Jul 2, 2009Atc Technologies, LlcMethods of Reducing Interference Including Calculation of Weights Based on Errors and Related Systems
US20090231187 *Feb 12, 2009Sep 17, 2009Churan Gary GAntenna Beam Forming Systems/Methods Using Unconstrained Phase Response
US20090305697 *Dec 10, 2009Atc Technologies, LlcCoordinated wireless communications system frequency reuse
US20090312013 *Dec 17, 2009Atc Technologies, LlcSystems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference
US20100035605 *Feb 11, 2010Atc Technologies, LlcSystems and methods for controlling a cellular communications system responsive to a power level associated with a wireless transmitter
US20100141509 *Feb 22, 2010Jun 10, 2010Atc Technologies, LlcRadioterminals and associated operating methods that transmit position information responsive to rate of change of position
US20100184427 *Jul 22, 2010Dunmin ZhengAdaptive beam forming with multi-user detection and interference reduction in satellite communication systems and methods
US20100233973 *Mar 15, 2010Sep 16, 2010Churan Gary GAntenna beam forming systems, methods and devices using phase adjusted least squares beam forming
US20110034166 *Feb 10, 2011Atc Technologies, LlcIntegrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US20110103273 *May 5, 2011Atc Technologies, LlcFrequency division duplex (fdd) return link transmit diversity systems, methods and devices using forward link side information
US20110164554 *Jan 5, 2010Jul 7, 2011Atc Technologies, LlcRetaining traffic channel assignments for satellite terminals to provide lower latency communication services
Classifications
U.S. Classification455/73
International ClassificationH04B7/185, H04B1/38
Cooperative ClassificationH04B7/1858, H04B7/18563, H04L12/5692
European ClassificationH04L12/56F1, H04B7/185S4, H04B7/185M12
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