Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2000-07-14
2004-12-07
Urban, Edward F. (Department: 2685)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S446000, C455S013100, C455S011100
Reexamination Certificate
active
06829479
ABSTRACT:
TECHNICAL FIELD
The present invention relates generally to wireless communications and, more particularly, to a wireless communications system that uses a high altitude communication device.
BACKGROUND ART
In this communication age, content providers are increasingly investigating ways in which to provide more content to users as well as interfacing with a larger group of users. The latest communications systems use digital broadcast satellites to broadcast to users in a forward direction. System operators have recognized that user requests are relatively small in terms of data compared to the amount of data broadcast from the satellite. Thus, for example, in the DirecTV® system, user requests are transmitted through telephone lines and programming is provided to the users via satellite.
In addition to satellites, stratospheric platforms are currently under development. One such stratospheric platform is Helios that is being developed by AeroVironment. The Helios stratospheric platform is an unmanned vehicle that can fly for several months at a height of about 60,000 feet. Helios is a solar powered electric plane that is modular in design and may be configured to carry a variety of payloads. Stratospheric platforms have numerous advantages including that capacity can be concentrated over a populated area, transmission delays associated with geostationary satellites are significantly reduced, the power required for transmitting and receiving is substantially smaller than satellites, and the elevation angles of the system are high. Also, these stratospheric platforms can be deployed relatively rapidly compared to satellites and thus, if a need increases, the system capability may be increased. In terrestrial-based cellular phone systems, a plurality of base stations are used to communicate with terrestrial-based users. The base stations require either terrestrial microwave links or fiber links that communicate with a central switching location. The growth of mobile communication systems is ever increasing. However, to keep up with demand, new cell sites must be added particularly in urban areas. However, it is increasingly difficult to add new cell sites in urban areas.
It would therefore be desirable to provide a wireless communication that allows easy expansion services to new users and the capability of adding additional capacity in high usage areas.
SUMMARY OF THE INVENTION
It is therefore one object of the present invention to provide a terrestrial wireless network that is easily expandable.
In one aspect of the invention, a communications system comprising a plurality of cells having a base unit therein. Each of the base units communicates with a plurality of users. A communication platform located in a stratospheric location is used for transmitting and receiving information from the base units. A gateway communicates with the platform and couples the user terminals with a terrestrial-based network through the communications platform and the base units.
In a further aspect of the invention, a method of operating a communications system comprises the steps of:
sending first communication signal from a first user terminal to a base unit;
sending the first signal from the base unit to a stratosphere-based communications platform;
transmitting the first signal from the stratosphere-based communications platform to a gateway ground station
In a further aspect of the invention, the gateway may transmit the first signal from the gateway ground station to a terrestrial-based network or the first signal may be transmitted back to the stratosphere platform and routed to another terminal through the same or a different base unit.
One advantage of the invention is that high-speed access to the Internet or other terrestrial networks may be obtained. Another advantage of the invention is that a wireless system may be expanded rapidly without having to provide a fixed communication between a gateway center and any additional cell sites.
Other objects and features of the present invention will become apparent when viewed in light of the detailed description of the preferred embodiment when taken in conjunction with the attached drawings and appended claims.
REFERENCES:
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5339330 (1994-08-01), Mallinckrodt
patent: 5555444 (1996-09-01), Diekelman et al.
patent: 5589834 (1996-12-01), Weinberg
patent: 5594941 (1997-01-01), Dent
patent: 5608722 (1997-03-01), Miller
patent: 5612701 (1997-03-01), Diekelman
patent: 5715516 (1998-02-01), Howard et al.
patent: 5717737 (1998-02-01), Doviak et al.
patent: 5790070 (1998-08-01), Natarajan et al.
patent: 5852721 (1998-12-01), Dillon et al.
patent: 5862480 (1999-01-01), Wild et al.
patent: 5864579 (1999-01-01), Briskman
patent: 5867109 (1999-02-01), Wiedeman
patent: 5915207 (1999-06-01), Dao et al.
patent: 5918157 (1999-06-01), Wiedeman et al.
patent: 5937332 (1999-08-01), Karabinis
patent: 5946625 (1999-08-01), Hassan et al.
patent: 5963862 (1999-10-01), Adiwoso et al.
patent: 5974317 (1999-10-01), Djuknic et al.
patent: 5982337 (1999-11-01), Newman et al.
patent: 5995725 (1999-11-01), Dillon
patent: 5995726 (1999-11-01), Dillon
patent: 6016388 (2000-01-01), Dillon
patent: 6028884 (2000-02-01), Silberger et al.
patent: 6061562 (2000-05-01), Martin et al.
patent: 6067453 (2000-05-01), Adiwoso et al.
patent: 6104911 (2000-08-01), Diekelman
patent: 6160994 (2000-12-01), Wiedeman
patent: 6167263 (2000-12-01), Campbell
patent: 6195555 (2001-02-01), Dent
patent: 6201797 (2001-03-01), Leuca et al.
patent: 6205320 (2001-03-01), Coleman
patent: 6215776 (2001-04-01), Chao
patent: 6298238 (2001-10-01), Dai
patent: 6308045 (2001-10-01), Wright et al.
patent: 6324398 (2001-11-01), Lanzerotti et al.
patent: 6324405 (2001-11-01), Young et al.
patent: 6343205 (2002-01-01), Threadgill et al.
patent: 6374080 (2002-04-01), Uchida
patent: 6377802 (2002-04-01), McKenna et al.
patent: 6385434 (2002-05-01), Chuprun et al.
patent: 6388615 (2002-05-01), Chang et al.
patent: 6408180 (2002-06-01), McKenna et al.
patent: 6422516 (2002-07-01), Maeda et al.
patent: 6438379 (2002-08-01), Gitlin et al.
patent: 6452541 (2002-09-01), Zhao et al.
patent: 6466554 (2002-10-01), Okada
patent: 6507739 (2003-01-01), Gross et al.
patent: 6526288 (2003-02-01), Khalifa et al.
patent: 6529706 (2003-03-01), Mitchell
patent: 6567052 (2003-05-01), Wang et al.
patent: 6570858 (2003-05-01), Emmons, Jr. et al.
patent: 6591111 (2003-07-01), Stosz et al.
patent: 2002/0041575 (2002-04-01), Karabinis et al.
patent: 2002/0072361 (2002-06-01), Knoblach et al.
patent: 2002/0126042 (2002-09-01), Chang et al.
patent: 1 139 583 (2001-10-01), None
patent: 1 148 662 (2001-10-01), None
patent: 1 152 552 (2001-11-01), None
patent: 1 158 698 (2001-11-01), None
patent: WO 95/04407 (1995-02-01), None
patent: WO 96/22661 (1996-07-01), None
patent: WO 97/07609 (1997-02-01), None
patent: WO98/51568 (1998-11-01), None
patent: WO 99/13598 (1999-03-01), None
patent: WO 99/23769 (1999-05-01), None
patent: WO 00/14902 (2000-03-01), None
patent: WO 01/93458 (2001-12-01), None
patent: WO 01/95523 (2001-12-01), None
Colella, Nicholas, “HALO Network—The Birth of Stratospheric Communications Services & Decline of Satellite Networks”, http://www.angelhalo.com/techpaper6, Copyright 1997-1999.
Djuknic, Goran et al., “Establishing Wireless Communications Services via High—Aeronautical platforms: A Concept Whose Time Has Come?” IEEE Communications Magazine, Sep. 1997, pp. 128-135.
Martin, James N. et al., “Halo Network—The Cone of Commerce”, http://www.angelhalo.com/techpaper2, copyright 1997-1998.
Martin, James N. et al., “HALO Network—Broadband Wireless Services from High Altitude Long Operation (HALO) Aircraft”, http://www.angelhalo.com/techpaper2, copyright 1997-1998.
Akyildiz, Ian F. et al., “HALO (High Altitude Long Operation): A Broadband Wireless Metropolitan Area Network”, IEEE International Workshop on Mobile Multimedia Communications, Nov. 1999, pp/. 271-275.
Divsalar et al., “Trellis Coded MPSK Modulation Techniques for MSAT-X”, Proceedings of the Mobile Satellit
Chang Donald C. D.
Chang Ming U.
Feria Ying
Rosen Harold
Crook III John A.
Grunebach Georgann S.
Le Lana
The DirecTV Group. Inc.
Urban Edward F.
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