WO2006062494A1 - Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers - Google Patents
Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers Download PDFInfo
- Publication number
- WO2006062494A1 WO2006062494A1 PCT/US2004/026385 US2004026385W WO2006062494A1 WO 2006062494 A1 WO2006062494 A1 WO 2006062494A1 US 2004026385 W US2004026385 W US 2004026385W WO 2006062494 A1 WO2006062494 A1 WO 2006062494A1
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- Prior art keywords
- sub
- band
- carrier
- frequency division
- wireless
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/208—Frequency-division multiple access [FDMA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J9/00—Multiplex systems in which each channel is represented by a different type of modulation of the carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J2011/0003—Combination with other multiplexing techniques
- H04J2011/0016—Combination with other multiplexing techniques with FDM/FDMA and TDM/TDMA
Definitions
- This invention relates to communications systems, methods and devices, and more particularly to wireless communications systems, methods and devices.
- T-FDM/T-FDMA and Orthogonal Frequency Division Multiplexing and/or Orthogonal Frequency Division Multiple Access
- OFDM/OFDMA Orthogonal Frequency Division Multiple Access
- T-FDM/T-FDMA and OFDM/OFDMA are relatively modern variations of the well known Frequency Division Multiplexing and/or Frequency Division Multiple Access (FDM/FDMA) communications techniques.
- FDM/FDMA Frequency Division Multiple Access
- a communications band of frequencies is divided into a number of frequency sub-bands over which sub-band carriers are used to transmit information.
- a sub-band carrier is allocated to only one user
- a user device and/or a system device may radiate only one sub-band carrier per carrier.
- An example of a classical FDM/FDMA system is the analog AMPS cellular communications system that continues to be used in the United States.
- Another example of a classical FDM/FDMA system is the M-SAT Mobile Satellite System (MSS) that is currently operated by Mobile Satellite Ventures (MSV). Inmarsat also offers MSS services via classical FDM/FDMA techniques.
- MSS M-SAT Mobile Satellite System
- MSV Mobile Satellite Ventures
- Frequency Division Multiplexing and/or Frequency Division Multiple Access refers to communications systems, methods, system devices and/or user devices wherein a communications band of frequencies is divided into a number of frequency sub-bands over which a plurality of sub-band carriers may exist, collectively defining a carrier, and where a user's information may be carried by at least one sub-band carrier of the possible plurality of sub-band carriers that may exist over the communications band of frequencies.
- a carrier may be defined to comprise more than one sub-band carrier and the information associated with a user may be associated with (transported/carried by) more than one sub-band carrier.
- the information that is transported/carried by a sub-band carrier may be conditioned to maintain an orthogonality condition, at a receiver observation time, relative to the information that is carried by any other sub- band carrier belonging to the same and/or different carrier.
- the sub-band carriers may be maximally packed in frequency to minimize a frequency separation between adjacent sub-band carriers and/or adjacent carriers. This feature of OFDM/OFDMA systems and methods may maximize spectral efficiency and may not require stringent frequency-domain filtering at a transmitter and/or receiver.
- the ability to separate signals carried by different sub-band carriers and/or different carriers is typically achieved by a frequency selectivity of sub-band and/or carrier filters.
- the sub-band carriers may be further multiplexed among a plurality of users in time and/or in frequency (Time-Frequency Division Multiplexing and/or Time- Frequency Division Multiple Access), resulting in the general case of combined frequency and time division multiplexing/multiple access (T-FDM/T-FDMA).
- OFDM/OFDMA may represent a special case of T- FDM/T-FDMA and/or FDM/FDMA in which a time orthogonality condition may exist between information elements carried by different sub-band carriers of the same and/or different carrier(s).
- Code Division Multiple Access (CDMA) techniques also may be used to multiplex a plurality to users on one or more sub-band carriers. OFDM systems and methods are described, for example, in U.S. Patent Nos.
- OFDM also is described in the tutorial entitled OFDM for Mobile Data Communications, published on the Web by The International Engineering Consortium, available on the Web at iec.org. OFDM is also used for wired communications, for example in Digital Subscriber Line (DSL) technology.
- DSL Digital Subscriber Line
- ADSL Asymmetrical DSL
- Embodiments of the present invention provide wireless FDM/FDMA systems, methods and/or devices, such as wireless T-FDM/T-FDMA and/or OFDM/OFDMA systems, methods and/or devices, wherein a sub-band carrier grouping, defining a carrier, is provided in a non-symmetrical manner between a forward and return link thereof.
- different forward-link carriers may contain a different number of sub-band carriers
- different return-link carriers may contain a different number of sub-band carriers.
- a forward link is a wireless link that transports user information from a wireless system device to a wireless user device
- a return link is a wireless link that transports user information from the wireless user device to the wireless system device.
- a return-link carrier consists of fewer sub- band carriers than a corresponding forward-link carrier. In yet other embodiments, a return-link carrier consists of a single sub-band carrier. Analogous wireless user devices, system devices and methods of operating wireless user devices and wireless system devices also may be provided.
- Figures 1 and 2 are block diagrams of wireless T-FDM/T-FDMA and/or
- OFDM/OFDMA systems methods, system devices, user devices and methods of operating same, according to various embodiments of the present invention.
- Wireless FDM/FDMA communications systems, methods and/or devices, such as wireless T-FDM/T-FDMA and/or OFDM/OFDMA communications systems, methods and/or devices, according to embodiments of the invention are operative in accordance with a communications protocol comprising non-symmetrically disposed sub-band carrier groupings between the forward and/or return link carriers.
- a forward link carrier 110 consists of a grouping of N sub-band carriers 112 while a corresponding return link carrier 120 consists of a grouping of M sub-band carriers 122, where M is less than N (M ⁇ N).
- a forward link carrier consisting of a grouping of N sub-band carriers 112 is used to transmit information from a wireless system device, such as a terrestrial base station 130 ( Figure 1) and/or a satellite 230 ( Figure 2), to a wireless user device 140, while a return link carrier consisting of a grouping of M sub-band carriers 122 is used to transmit information from the wireless user device 140 to the wireless system device 130 and/or 230.
- a wireless system device such as a terrestrial base station 130 ( Figure 1) and/or a satellite 230 ( Figure 2)
- a return link carrier consisting of a grouping of M sub-band carriers 122 is used to transmit information from the wireless user device 140 to the wireless system device 130 and/or 230.
- the wireless user devices 140 and the wireless system devices 130 and/or 230 may include a transceiver (transmitter/receiver) that is configured to transmit and receive these carriers.
- wireless user device 140 includes cellular and/or satellite radiotelephones with or without a multi-line display; Personal Communications System (PCS) terminals that may combine a radiotelephone with data processing, facsimile ( and/or data communications capabilities; Personal Digital Assistants (PDA) that can include a radio frequency transceiver and a pager, Internet/intranet access, Web browser, organizer, calendar and/or a global positioning system (GPS) receiver; and/or conventional laptop and/or palmtop computers or other appliances, which include a radio frequency transceiver.
- PCS Personal Communications System
- PDA Personal Digital Assistants
- PDA personal Digital Assistants
- conventional laptop and/or palmtop computers or other appliances which include a radio frequency transceiver.
- wireless user device 140 also includes any other radiating user device/equipment/source that may have time-varying or fixed geographic coordinates, and may be portable, transportable, installed in a vehicle (aeronautical, maritime, or land-based), or situated and/or configured to operate locally and/or in a distributed fashion at any other location(s) on earth and/or in space.
- the terms “radioterminal,” “radiotelephone,” or simply “terminal” may also be used to convey the same meaning as the term wireless user device.
- wireless system device includes any combination of system equipment (not end-user equipment, such as base station(s) 130 and/or satellite(s) 230) that is (are) configured to radiate electromagnetic energy for the purpose of wirelessly transmitting information to at least one wireless user device.
- system equipment not end-user equipment, such as base station(s) 130 and/or satellite(s) 230
- satellite(s) 230 satellite(s) 230
- a terrestrial base station 130 includes a conventional cellular base station and/or an Ancillary Terrestrial Component (ATC).
- ATCs are described in U.S. Patent 6,684,057 to Karabinis, entitled Systems and Methods for Terrestrial Reuse of Cellular Satellite Frequency Spectrum; and Published U.S. Patent Application Nos.
- Karabinis entitled Wireless Communications Systems and Methods Using Satellite- Linked Remote Terminal Interface Subsystems; US 2003/0224785 to Karabinis, entitled Systems and Methods for Reducing Satellite Feeder Link Bandwidth/Carriers In Cellular Satellite Systems; US 2002/0041575 to Karabinis et al., entitled Coordinated Satellite-Terrestrial Frequency Reuse; US 2002/0090942 to Karabinis et al., entitled Integrated or Autonomous System and Method of Satellite-Terrestrial Frequency Reuse Using Signal Attenuation and/or Blockage, Dynamic Assignment of Frequencies and/or Hysteresis; US 2003/0068978 to Karabinis et al., entitled Space- Based Network Architectures for Satellite Radiotelephone Sy sterns; US 2003/0143949 to Karabinis, entitled Filters for Combined Radiotelephone/GPS Terminals; US
- the occupied bandwidth of a sub-band carrier of either a forward link 110 or a return link 120 carrier may be identical, substantially identical, or different from the occupied bandwidth of any other sub-band carrier of the same or other forward and/or return link carrier.
- a return link sub-band carrier 122 may have a frame structure and may be based on Time Division Multiplexing and/or Time Division Multiple Access (TDM/TDMA), Code Division Multiplexing and/or Code Division Multiple Access (CDM/CDMA), Frequency Division Multiplexing and/or Frequency Division Multiple Access (FDM/FDMA) and/or any other multiplexing/multiple access principle.
- a forward link sub-band carrier 112 may have a frame structure and may support Time Division Multiplexing and/or Time Division Multiple Access (TDM/TDMA), Code Division Multiplexing and/or Code Division Multiple Access (CDM/CDMA), Frequency Division Multiplexing and/or Frequency Division Multiple Access (FDM/FDMA) and/or any other multiplexing and/or multiple access technique.
- TDM/TDMA Time Division Multiple Access
- CDMA Code Division Multiplexing and/or Code Division Multiple Access
- FDM/FDMA Frequency Division Multiplexing and/or Frequency Division Multiple Access
- the sub-band carrier modulation used may be identical, substantially identical, or different between sub-band carriers of the same and/or different forward link 110 and/or the return link 120 carrier(s).
- a vocoder that may be associated with a sub-band carrier may be identical, substantially identical, or different than a vocoder that may be associated with any other sub-band carrier of the same and/or different forward link 110 and/or the return link 120 carrier(s).
- the Forward Error Correction Coding (FEC) and/or interleaving that may be used to protect information on a sub-band carrier may be identical, substantially identical, or different than the FEC and/or interleaving that may be used to protect information on any other sub- band carrier of the same and/or different forward link 110 and/or the return link 120 carrier(s).
- FEC Forward Error Correction Coding
- This can allow the wireless user device 140 to transmit information to the system continuously or substantially continuously in time, can increase or maximize the E t> /N 0 operating point of the wireless receiver, and/or can reduce or minimize the power output of the transmitting device, relative to a return link carrier consisting of a plurality of sub-band carriers and/or where the transmit frame is shared by a plurality of users.
- An application of these embodiments to wireless communications systems and methods, and in particular to satellite systems and methods may allow such systems and methods to operate with increased link reliability (link margin) on their return links.
- the number of sub- band carriers 122 of a first return link carrier is different than the number of sub-band carriers 122 of a second return link carrier and/or the number of sub-band carriers 112 of a first forward link carrier is different than the number of sub-band carriers 112 of a second forward link carrier.
- N can vary among different forward link carriers of the forward link and/or M can vary among different return link carriers of the return link.
- This aspect of the invention may be used to maximize or improve spectral utilization and/or spectral efficiency in systems (such as, for example, in L-band systems) where a band of frequencies that is available to the system may comprise a plurality of non-contiguous frequency segments.
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020067003549A KR101095586B1 (en) | 2003-08-22 | 2004-08-13 | Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers |
EP04822320A EP1690425A4 (en) | 2003-08-22 | 2004-08-13 | Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers |
JP2006546964A JP2007511189A (en) | 2003-08-22 | 2004-08-13 | Wireless system, method and device using forward and / or reverse link carriers with different numbers of subband carriers |
BRPI0413790-6A BRPI0413790A (en) | 2003-08-22 | 2004-08-13 | wireless system, wireless method, wireless system device, wireless user device, and methods of operating a wireless system device and a wireless user device |
CNA2004800307762A CN1957622A (en) | 2003-08-22 | 2004-08-13 | Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers |
MXPA06002056A MXPA06002056A (en) | 2003-08-22 | 2004-08-13 | Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers. |
AU2004320903A AU2004320903B8 (en) | 2003-08-22 | 2004-08-13 | Wireless systems, methods and devices employing forward-and/or return-link carriers having different numbers of sub-band carriers |
CA002535767A CA2535767A1 (en) | 2003-08-22 | 2004-08-13 | Wireless systems, methods and devices employing forward-and/or return-link carriers having different numbers of sub-band carriers |
IL173804A IL173804A0 (en) | 2003-08-22 | 2006-02-19 | Wireless systems, methods and devices employing forward and/or return-link carriers having different numbers of sub-band carriers |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US49726903P | 2003-08-22 | 2003-08-22 | |
US60/497,269 | 2003-08-22 | ||
US10/914,515 | 2004-08-09 | ||
US10/914,515 US20050041619A1 (en) | 2003-08-22 | 2004-08-09 | Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers |
Publications (2)
Publication Number | Publication Date |
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WO2006062494A1 true WO2006062494A1 (en) | 2006-06-15 |
WO2006062494A8 WO2006062494A8 (en) | 2007-01-11 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2004/026385 WO2006062494A1 (en) | 2003-08-22 | 2004-08-13 | Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers |
Country Status (9)
Country | Link |
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US (1) | US20050041619A1 (en) |
EP (1) | EP1690425A4 (en) |
JP (1) | JP2007511189A (en) |
KR (1) | KR101095586B1 (en) |
CN (1) | CN1957622A (en) |
AU (1) | AU2004320903B8 (en) |
BR (1) | BRPI0413790A (en) |
MX (1) | MXPA06002056A (en) |
WO (1) | WO2006062494A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101252768B (en) * | 2007-02-25 | 2011-12-14 | 富士通株式会社 | Scheduling apparatus and method |
CN106413006A (en) * | 2016-09-12 | 2017-02-15 | 电子科技大学 | OFDM communication method and system with uniform subband overlapping |
Families Citing this family (105)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7714778B2 (en) * | 1997-08-20 | 2010-05-11 | Tracbeam Llc | Wireless location gateway and applications therefor |
US20030149986A1 (en) * | 1999-08-10 | 2003-08-07 | Mayfield William W. | Security system for defeating satellite television piracy |
US7174127B2 (en) * | 1999-08-10 | 2007-02-06 | Atc Technologies, Llc | Data communications systems and methods using different wireless links for inbound and outbound data |
US7558568B2 (en) * | 2003-07-28 | 2009-07-07 | Atc Technologies, Llc | Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference |
US6859652B2 (en) * | 2000-08-02 | 2005-02-22 | Mobile Satellite Ventures, Lp | Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis |
US8265637B2 (en) * | 2000-08-02 | 2012-09-11 | Atc Technologies, Llc | Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference |
AU2001284688B2 (en) * | 2000-08-02 | 2006-07-06 | Atc Technologies, Llc | Coordinated satellite-terrestrial frequency reuse |
US7792488B2 (en) * | 2000-12-04 | 2010-09-07 | Atc Technologies, Llc | Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength |
US7890098B2 (en) * | 2001-09-14 | 2011-02-15 | Atc Technologies, Llc | Staggered sectorization for terrestrial reuse of satellite frequencies |
US7218931B2 (en) * | 2001-09-14 | 2007-05-15 | Atc Technologies, Llc | Satellite radiotelephone systems providing staggered sectorization for terrestrial reuse of satellite frequencies and related methods and radiotelephone systems |
US7792069B2 (en) * | 2001-09-14 | 2010-09-07 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum using different channel separation technologies in forward and reverse links |
US7006789B2 (en) * | 2001-09-14 | 2006-02-28 | Atc Technologies, Llc | Space-based network architectures for satellite radiotelephone systems |
US7603081B2 (en) * | 2001-09-14 | 2009-10-13 | Atc Technologies, Llc | Radiotelephones and operating methods that use a single radio frequency chain and a single baseband processor for space-based and terrestrial communications |
US7603117B2 (en) * | 2001-09-14 | 2009-10-13 | Atc Technologies, Llc | Systems and methods for terrestrial use of cellular satellite frequency spectrum |
US7593724B2 (en) * | 2001-09-14 | 2009-09-22 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode |
US7623859B2 (en) * | 2001-09-14 | 2009-11-24 | Atc Technologies, Llc | Additional aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods |
US8270898B2 (en) * | 2001-09-14 | 2012-09-18 | Atc Technologies, Llc | Satellite-band spectrum utilization for reduced or minimum interference |
US7664460B2 (en) | 2001-09-14 | 2010-02-16 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode |
US7062267B2 (en) * | 2001-09-14 | 2006-06-13 | Atc Technologies, Llc | Methods and systems for modifying satellite antenna cell patterns in response to terrestrial reuse of satellite frequencies |
US7447501B2 (en) * | 2001-09-14 | 2008-11-04 | Atc Technologies, Llc | Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference |
US7181161B2 (en) * | 2001-09-14 | 2007-02-20 | Atc Technologies, Llc | Multi-band/multi-mode satellite radiotelephone communications systems and methods |
US7113778B2 (en) * | 2001-09-14 | 2006-09-26 | Atc Technologies, Llc | Aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods |
US6999720B2 (en) * | 2001-09-14 | 2006-02-14 | Atc Technologies, Llc | Spatial guardbands for terrestrial reuse of satellite frequencies |
US7155340B2 (en) * | 2001-09-14 | 2006-12-26 | Atc Technologies, Llc | Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates |
US6785543B2 (en) | 2001-09-14 | 2004-08-31 | Mobile Satellite Ventures, Lp | Filters for combined radiotelephone/GPS terminals |
TWI240724B (en) * | 2001-12-17 | 2005-10-01 | Kuraray Co | Polyvinyl alcohol film and polarizing film |
US7593691B2 (en) * | 2002-02-12 | 2009-09-22 | Atc Technologies, Llc | Systems and methods for controlling a level of interference to a wireless receiver responsive to a power level associated with a wireless transmitter |
US6856787B2 (en) | 2002-02-12 | 2005-02-15 | Mobile Satellite Ventures, Lp | Wireless communications systems and methods using satellite-linked remote terminal interface subsystems |
US6937857B2 (en) * | 2002-05-28 | 2005-08-30 | Mobile Satellite Ventures, Lp | Systems and methods for reducing satellite feeder link bandwidth/carriers in cellular satellite systems |
US7092708B2 (en) * | 2002-12-12 | 2006-08-15 | Atc Technologies, Llc | Systems and methods for increasing capacity and/or quality of service of terrestrial cellular and satellite systems using terrestrial reception of satellite band frequencies |
US7421342B2 (en) * | 2003-01-09 | 2008-09-02 | Atc Technologies, Llc | Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates |
US7203490B2 (en) * | 2003-03-24 | 2007-04-10 | Atc Technologies, Llc | Satellite assisted push-to-send radioterminal systems and methods |
US7444170B2 (en) * | 2003-03-24 | 2008-10-28 | Atc Technologies, Llc | Co-channel wireless communication methods and systems using nonsymmetrical alphabets |
US6879829B2 (en) * | 2003-05-16 | 2005-04-12 | Mobile Satellite Ventures, Lp | Systems 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 |
US20040240525A1 (en) * | 2003-05-29 | 2004-12-02 | Karabinis Peter D. | Wireless communications methods and apparatus using licensed-use system protocols with unlicensed-use access points |
US8670705B2 (en) * | 2003-07-30 | 2014-03-11 | Atc Technologies, Llc | Additional intra-and/or inter-system interference reducing systems and methods for satellite communications systems |
US7340213B2 (en) * | 2003-07-30 | 2008-03-04 | Atc Technologies, Llc | Intra- and/or inter-system interference reducing systems and methods for satellite communications systems |
US7113743B2 (en) | 2003-09-11 | 2006-09-26 | Atc Technologies, Llc | Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint |
US20050090256A1 (en) | 2003-09-23 | 2005-04-28 | Santanu Dutta | Systems and methods for mobility management in overlaid mobile communications systems |
US8380186B2 (en) | 2004-01-22 | 2013-02-19 | Atc Technologies, Llc | Satellite with different size service link antennas and radioterminal communication methods using same |
US9083436B2 (en) | 2004-03-05 | 2015-07-14 | Interdigital Technology Corporation | Full duplex communication system using disjoint spectral blocks |
US7418236B2 (en) * | 2004-04-20 | 2008-08-26 | Mobile Satellite Ventures, Lp | Extraterrestrial communications systems and methods including ancillary extraterrestrial components |
US8655398B2 (en) * | 2004-03-08 | 2014-02-18 | Atc Technologies, Llc | Communications systems and methods including emission detection |
US7933552B2 (en) * | 2004-03-22 | 2011-04-26 | Atc Technologies, Llc | Multi-band satellite and/or ancillary terrestrial component radioterminal communications systems and methods with combining operation |
US7606590B2 (en) | 2004-04-07 | 2009-10-20 | Atc Technologies, Llc | Satellite/hands-free interlock systems and/or companion devices for radioterminals and related methods |
US7636566B2 (en) * | 2004-04-12 | 2009-12-22 | Atc Technologies, Llc | Systems and method with different utilization of satellite frequency bands by a space-based network and an ancillary terrestrial network |
US20050239399A1 (en) * | 2004-04-21 | 2005-10-27 | Karabinis Peter D | Mobile terminals and set top boxes including multiple satellite band service links, and related systems and methods |
US8265549B2 (en) * | 2004-05-18 | 2012-09-11 | Atc Technologies, Llc | Satellite communications systems and methods using radiotelephone |
US20050260984A1 (en) * | 2004-05-21 | 2005-11-24 | Mobile Satellite Ventures, Lp | Systems and methods for space-based use of terrestrial cellular frequency spectrum |
US7706748B2 (en) * | 2004-06-25 | 2010-04-27 | Atc Technologies, Llc | Methods of ground based beamforming and on-board frequency translation and related systems |
MX2007001677A (en) * | 2004-08-11 | 2007-04-12 | Atc Tech Llc | System for reduction of interference between different communications system. |
US20060094420A1 (en) * | 2004-11-02 | 2006-05-04 | Karabinis Peter D | Multi frequency band/multi air interface/multi spectrum reuse cluster size/multi cell size satellite radioterminal communicaitons systems and methods |
US7639981B2 (en) * | 2004-11-02 | 2009-12-29 | Atc Technologies, Llc | Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations |
MX2007005805A (en) * | 2004-11-16 | 2007-07-20 | Atc Tech Llc | Satellite communications systems, components and methods for operating shared satellite gateways. |
US7747229B2 (en) * | 2004-11-19 | 2010-06-29 | Atc Technologies, Llc | Electronic antenna beam steering using ancillary receivers and related methods |
US7454175B2 (en) * | 2004-12-07 | 2008-11-18 | Atc Technologies, Llc | Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments |
US8594704B2 (en) | 2004-12-16 | 2013-11-26 | Atc Technologies, Llc | Location-based broadcast messaging for radioterminal users |
EP2254264A3 (en) * | 2005-01-05 | 2013-11-13 | ATC Technologies, LLC | Adaptive beam forming with multi-user detection and interference reduction in satellite communication systems and methods |
US7596111B2 (en) * | 2005-01-27 | 2009-09-29 | Atc Technologies, Llc | Satellite/terrestrial wireless communications systems and methods using disparate channel separation codes |
US20060187872A1 (en) * | 2005-02-21 | 2006-08-24 | Rich Mark J | Multiaccess techniques for mobile and stationary cellular communications |
US7738837B2 (en) * | 2005-02-22 | 2010-06-15 | Atc Technologies, Llc | Satellites using inter-satellite links to create indirect feeder link paths |
US7636546B2 (en) * | 2005-02-22 | 2009-12-22 | Atc Technologies, Llc | Satellite communications systems and methods using diverse polarizations |
US7620394B2 (en) * | 2005-02-22 | 2009-11-17 | Atc Technologies, Llc | Reusing frequencies of a fixed and/or mobile communications system |
US7756490B2 (en) * | 2005-03-08 | 2010-07-13 | Atc Technologies, Llc | Methods, radioterminals, and ancillary terrestrial components for communicating using spectrum allocated to another satellite operator |
US7796986B2 (en) * | 2005-03-11 | 2010-09-14 | Atc Technologies, Llc | Modification of transmission values to compensate for interference in a satellite down-link communications |
US7627285B2 (en) * | 2005-03-14 | 2009-12-01 | Atc Technologies, Llc | Satellite communications systems and methods with distributed and/or centralized architecture including ground-based beam forming |
WO2006099443A1 (en) * | 2005-03-15 | 2006-09-21 | Atc Technologies, Llc | Intra-system and/or inter-system reuse of feeder link frequencies including interference suppression systems and methods |
WO2006099501A1 (en) * | 2005-03-15 | 2006-09-21 | Atc Technologies, Llc | Methods and systems providing adaptive feeder links for ground based beam forming and related systems and satellites |
US7453396B2 (en) * | 2005-04-04 | 2008-11-18 | Atc Technologies, Llc | Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals |
US8036205B2 (en) * | 2005-06-13 | 2011-10-11 | Qualcomm Incorporated | Methods and apparatus for supporting uplinks with remote base stations |
US7974261B2 (en) * | 2005-06-13 | 2011-07-05 | Qualcomm Incorporated | Basestation methods and apparatus for supporting timing synchronization |
US7403470B2 (en) * | 2005-06-13 | 2008-07-22 | Qualcomm Incorporated | Communications system, methods and apparatus |
US7574224B2 (en) * | 2005-06-13 | 2009-08-11 | Qualcomm Incorporated | Methods and apparatus for performing timing synchronization with base stations |
US7817967B2 (en) * | 2005-06-21 | 2010-10-19 | Atc Technologies, Llc | Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction |
US7970345B2 (en) * | 2005-06-22 | 2011-06-28 | Atc Technologies, Llc | Systems and methods of waveform and/or information splitting for wireless transmission of information to one or more radioterminals over a plurality of transmission paths and/or system elements |
US7907944B2 (en) * | 2005-07-05 | 2011-03-15 | Atc Technologies, Llc | Methods, apparatus and computer program products for joint decoding of access probes in a CDMA communications system |
US8190114B2 (en) * | 2005-07-20 | 2012-05-29 | Atc Technologies, Llc | Frequency-dependent filtering for wireless communications transmitters |
US7623867B2 (en) * | 2005-07-29 | 2009-11-24 | Atc Technologies, Llc | Satellite communications apparatus and methods using asymmetrical forward and return link frequency reuse |
US7461756B2 (en) * | 2005-08-08 | 2008-12-09 | Plastipak Packaging, Inc. | Plastic container having a freestanding, self-supporting base |
MX2008001707A (en) * | 2005-08-09 | 2008-11-10 | Atc Tech Llc | Satellite communications systems and methods using substantially co-located feeder link antennas. |
US20070123252A1 (en) * | 2005-10-12 | 2007-05-31 | Atc Technologies, Llc | Systems, methods and computer program products for mobility management in hybrid satellite/terrestrial wireless communications systems |
WO2007084681A1 (en) * | 2006-01-20 | 2007-07-26 | Atc Technologies, Llc | Systems and methods for satellite forward link transmit diversity using orthogonal space coding |
US8705436B2 (en) * | 2006-02-15 | 2014-04-22 | Atc Technologies, Llc | Adaptive spotbeam broadcasting, systems, methods and devices for high bandwidth content distribution over satellite |
US7751823B2 (en) * | 2006-04-13 | 2010-07-06 | Atc Technologies, Llc | Systems and methods for controlling a level of interference to a wireless receiver responsive to an activity factor associated with a wireless transmitter |
US8923850B2 (en) | 2006-04-13 | 2014-12-30 | Atc Technologies, Llc | Systems and methods for controlling base station sectors to reduce potential interference with low elevation satellites |
US9014619B2 (en) | 2006-05-30 | 2015-04-21 | Atc Technologies, Llc | Methods and systems for satellite communications employing ground-based beam forming with spatially distributed hybrid matrix amplifiers |
US8169955B2 (en) * | 2006-06-19 | 2012-05-01 | Atc Technologies, Llc | Systems and methods for orthogonal frequency division multiple access (OFDMA) communications over satellite links |
WO2008027109A2 (en) * | 2006-06-29 | 2008-03-06 | Atc Technologies, Llc | Apparatus and methods for mobility management in hybrid terrestrial-satellite mobile communications systems |
US20080025255A1 (en) * | 2006-07-25 | 2008-01-31 | Deepshikha Garg | Multiple traffic types in a multicarrier system |
US8031646B2 (en) * | 2007-05-15 | 2011-10-04 | Atc Technologies, Llc | Systems, methods and devices for reusing spectrum of another operator |
US8064824B2 (en) * | 2007-07-03 | 2011-11-22 | Atc Technologies, Llc | Systems and methods for reducing power robbing impact of interference to a satellite |
US7978135B2 (en) * | 2008-02-15 | 2011-07-12 | Atc Technologies, Llc | Antenna beam forming systems/methods using unconstrained phase response |
US8433241B2 (en) | 2008-08-06 | 2013-04-30 | Atc Technologies, Llc | Systems, methods and devices for overlaid operations of satellite and terrestrial wireless communications systems |
US8193975B2 (en) | 2008-11-12 | 2012-06-05 | Atc Technologies | Iterative antenna beam forming systems/methods |
US8339308B2 (en) * | 2009-03-16 | 2012-12-25 | Atc Technologies Llc | Antenna beam forming systems, methods and devices using phase adjusted least squares beam forming |
US8520561B2 (en) * | 2009-06-09 | 2013-08-27 | Atc Technologies, Llc | Systems, methods and network components that provide different satellite spot beam return carrier groupings and reuse patterns |
KR101620071B1 (en) * | 2009-09-16 | 2016-05-12 | 삼성전자주식회사 | Apparatus and method for setting frequency band, access point and method for setting frequency band |
WO2011038378A1 (en) | 2009-09-28 | 2011-03-31 | Atc Technologies, Llc | Systems and methods for adaptive interference cancellation beamforming |
US10110288B2 (en) * | 2009-11-04 | 2018-10-23 | Atc Technologies, Llc | Frequency division duplex (FDD) return link transmit diversity systems, methods and devices using forward link side information |
US8274925B2 (en) | 2010-01-05 | 2012-09-25 | Atc Technologies, Llc | Retaining traffic channel assignments for satellite terminals to provide lower latency communication services |
CN102457857B (en) * | 2010-10-19 | 2014-04-02 | 普天信息技术研究院有限公司 | Method for selecting resident sub-band and base station |
CN103227765A (en) * | 2011-03-25 | 2013-07-31 | 北京新岸线移动多媒体技术有限公司 | Data transmission method based on orthogonal frequency division multiplexing (OFDM) and transmitting station |
CN103477598B (en) * | 2011-03-25 | 2016-11-02 | 北京新岸线移动多媒体技术有限公司 | A kind of data transmission method based on OFDM and transmitting website |
US9755796B2 (en) * | 2015-03-18 | 2017-09-05 | Honeywell International Inc. | System and method of using radio altimeter frequency spectrum for wireless signals |
CN113595615B (en) * | 2021-07-26 | 2022-07-12 | 中国科学院国家空间科学中心 | Method and system for realizing multi-satellite communication ranging |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6400699B1 (en) * | 2000-09-12 | 2002-06-04 | Iospan Wireless, Inc. | Transmission scheduler for a multiple antenna wireless cellular network |
US6721569B1 (en) * | 2000-09-29 | 2004-04-13 | Nortel Networks Limited | Dynamic sub-carrier assignment in OFDM systems |
Family Cites Families (92)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5303286A (en) * | 1991-03-29 | 1994-04-12 | Space Systems/Loral, Inc. | Wireless telephone/satellite roaming system |
US4901307A (en) * | 1986-10-17 | 1990-02-13 | Qualcomm, Inc. | Spread spectrum multiple access communication system using satellite or terrestrial repeaters |
US5327572A (en) * | 1990-03-06 | 1994-07-05 | Motorola, Inc. | Networked satellite and terrestrial cellular radiotelephone systems |
US5073900A (en) * | 1990-03-19 | 1991-12-17 | Mallinckrodt Albert J | Integrated cellular communications system |
US5835857A (en) * | 1990-03-19 | 1998-11-10 | Celsat America, Inc. | Position determination for reducing unauthorized use of a communication system |
US5878329A (en) * | 1990-03-19 | 1999-03-02 | Celsat America, Inc. | Power control of an integrated cellular communications system |
US5446756A (en) * | 1990-03-19 | 1995-08-29 | Celsat America, Inc. | Integrated cellular communications system |
US5526404A (en) * | 1991-10-10 | 1996-06-11 | Space Systems/Loral, Inc. | Worldwide satellite telephone system and a network coordinating gateway for allocating satellite and terrestrial gateway resources |
US6067442A (en) * | 1991-10-10 | 2000-05-23 | Globalstar L.P. | Satellite communications system having distributed user assignment and resource assignment with terrestrial gateways |
US5619503A (en) * | 1994-01-11 | 1997-04-08 | Ericsson Inc. | Cellular/satellite communications system with improved frequency re-use |
US5511233A (en) * | 1994-04-05 | 1996-04-23 | Celsat America, Inc. | System and method for mobile communications in coexistence with established communications systems |
FR2729025B1 (en) * | 1995-01-02 | 1997-03-21 | Europ Agence Spatiale | METHOD AND SYSTEM FOR TRANSMITTING RADIO SIGNALS VIA A SATELLITE NETWORK BETWEEN A FIXED EARTH STATION AND MOBILE USER TERMINALS |
US6240124B1 (en) * | 1995-06-06 | 2001-05-29 | Globalstar L.P. | Closed loop power control for low earth orbit satellite communications system |
US5619525A (en) * | 1995-06-06 | 1997-04-08 | Globalstar L.P. | Closed loop power control for low earth orbit satellite communications system |
US5726978A (en) * | 1995-06-22 | 1998-03-10 | Telefonaktiebolaget L M Ericsson Publ. | Adaptive channel allocation in a frequency division multiplexed system |
JPH099246A (en) * | 1995-06-23 | 1997-01-10 | Toshiba Corp | Catv system, catv center unit and catv terminal equipment |
JP2965132B2 (en) * | 1995-07-24 | 1999-10-18 | エヌ・ティ・ティ移動通信網株式会社 | Mobile radio |
JP3780551B2 (en) * | 1996-01-29 | 2006-05-31 | ソニー株式会社 | Signal transmission method and apparatus by multiple access |
US6449461B1 (en) * | 1996-07-15 | 2002-09-10 | Celsat America, Inc. | System for mobile communications in coexistence with communication systems having priority |
US5926758A (en) * | 1996-08-26 | 1999-07-20 | Leo One Ip, L.L.C. | Radio frequency sharing methods for satellite systems |
US6072768A (en) * | 1996-09-04 | 2000-06-06 | Globalstar L.P. | Automatic satellite/terrestrial mobile terminal roaming system and method |
GB2317303B (en) * | 1996-09-09 | 1998-08-26 | I Co Global Communications | Communications apparatus and method |
US5761605A (en) * | 1996-10-11 | 1998-06-02 | Northpoint Technology, Ltd. | Apparatus and method for reusing satellite broadcast spectrum for terrestrially broadcast signals |
US5956642A (en) * | 1996-11-25 | 1999-09-21 | Telefonaktiebolaget L M Ericsson | Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system |
US6091933A (en) * | 1997-01-03 | 2000-07-18 | Globalstar L.P. | Multiple satellite system power allocation by communication link optimization |
JPH10261987A (en) * | 1997-03-19 | 1998-09-29 | Fujitsu Ltd | Two-layer constitution satellite communication system and its geostationary satellite |
US5937332A (en) * | 1997-03-21 | 1999-08-10 | Ericsson, Inc. | Satellite telecommunications repeaters and retransmission methods |
EP0869628A1 (en) * | 1997-04-01 | 1998-10-07 | ICO Services Ltd. | Interworking between telecommunications networks |
US6175550B1 (en) * | 1997-04-01 | 2001-01-16 | Lucent Technologies, Inc. | Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof |
GB2324218A (en) * | 1997-04-09 | 1998-10-14 | Ico Services Ltd | Satellite acquisition in navigation system |
US5884142A (en) * | 1997-04-15 | 1999-03-16 | Globalstar L.P. | Low earth orbit distributed gateway communication system |
US6032041A (en) * | 1997-06-02 | 2000-02-29 | Hughes Electronics Corporation | Method and system for providing wideband communications to mobile users in a satellite-based network |
US6134437A (en) * | 1997-06-13 | 2000-10-17 | Ericsson Inc. | Dual-mode satellite/cellular phone architecture with physically separable mode |
US6011951A (en) * | 1997-08-22 | 2000-01-04 | Teledesic Llc | Technique for sharing radio frequency spectrum in multiple satellite communication systems |
US6085094A (en) * | 1997-08-29 | 2000-07-04 | Nortel Networks Corporation | Method for optimizing spectral re-use |
US6052586A (en) * | 1997-08-29 | 2000-04-18 | Ericsson Inc. | Fixed and mobile satellite radiotelephone systems and methods with capacity sharing |
JP3224362B2 (en) * | 1997-09-01 | 2001-10-29 | 株式会社エヌ・ティ・ティ・ドコモ | How to use mobile communication frequency |
US6038450A (en) * | 1997-09-12 | 2000-03-14 | Lucent Technologies, Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
US5907541A (en) * | 1997-09-17 | 1999-05-25 | Lockheed Martin Corp. | Architecture for an integrated mobile and fixed telecommunications system including a spacecraft |
US6047186A (en) * | 1997-10-06 | 2000-04-04 | Nortel Networks Corporation | Method and system for solving cellular communications frequency planning problem |
US6101385A (en) * | 1997-10-09 | 2000-08-08 | Globalstar L.P. | Satellite communication service with non-congruent sub-beam coverage |
US6052560A (en) * | 1997-10-15 | 2000-04-18 | Ericsson Inc | Satellite system utilizing a plurality of air interface standards and method employing same |
EP0915586B1 (en) * | 1997-11-07 | 2005-05-18 | Sony International (Europe) GmbH | Multicarrier transmission, compatible with the existing GSM system |
US6016311A (en) * | 1997-11-19 | 2000-01-18 | Ensemble Communications, Inc. | Adaptive time division duplexing method and apparatus for dynamic bandwidth allocation within a wireless communication system |
GB2332603B (en) * | 1997-12-22 | 2000-07-19 | Lsi Logic Corp | Improvements relating to multidirectional communication systems |
JPH11205277A (en) * | 1998-01-07 | 1999-07-30 | Toshiba Corp | Radio communication system |
US6418147B1 (en) * | 1998-01-21 | 2002-07-09 | Globalstar Lp | Multiple vocoder mobile satellite telephone system |
EP0938193A1 (en) * | 1998-02-18 | 1999-08-25 | Sony International (Europe) GmbH | Header structure for TDD systems |
US6735437B2 (en) * | 1998-06-26 | 2004-05-11 | Hughes Electronics Corporation | Communication system employing reuse of satellite spectrum for terrestrial communication |
US6775251B1 (en) * | 1998-09-17 | 2004-08-10 | Globalstar L.P. | Satellite communication system providing multi-gateway diversity and improved satellite loading |
JP2000115834A (en) * | 1998-10-05 | 2000-04-21 | Sony Corp | Communication method, base station device and communication terminal |
US6198730B1 (en) * | 1998-10-13 | 2001-03-06 | Motorola, Inc. | Systems and method for use in a dual mode satellite communications system |
US6198921B1 (en) * | 1998-11-16 | 2001-03-06 | Emil Youssefzadeh | Method and system for providing rural subscriber telephony service using an integrated satellite/cell system |
US6253080B1 (en) * | 1999-07-08 | 2001-06-26 | Globalstar L.P. | Low earth orbit distributed gateway communication system |
US6522865B1 (en) * | 1999-08-10 | 2003-02-18 | David D. Otten | Hybrid satellite communications system |
US20030149986A1 (en) * | 1999-08-10 | 2003-08-07 | Mayfield William W. | Security system for defeating satellite television piracy |
US7174127B2 (en) * | 1999-08-10 | 2007-02-06 | Atc Technologies, Llc | Data communications systems and methods using different wireless links for inbound and outbound data |
GB2365677A (en) * | 2000-02-29 | 2002-02-20 | Ico Services Ltd | Satellite communications with satellite routing according to channels assignment |
US7558568B2 (en) * | 2003-07-28 | 2009-07-07 | Atc Technologies, Llc | Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference |
AU2001284688B2 (en) * | 2000-08-02 | 2006-07-06 | Atc Technologies, Llc | Coordinated satellite-terrestrial frequency reuse |
US6859652B2 (en) * | 2000-08-02 | 2005-02-22 | Mobile Satellite Ventures, Lp | Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis |
US6628919B1 (en) * | 2000-08-09 | 2003-09-30 | Hughes Electronics Corporation | Low-cost multi-mission broadband communications payload |
US20030003815A1 (en) * | 2000-12-20 | 2003-01-02 | Yoshiko Yamada | Communication satellite/land circuits selection communications system |
US7113778B2 (en) * | 2001-09-14 | 2006-09-26 | Atc Technologies, Llc | Aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods |
US7006789B2 (en) * | 2001-09-14 | 2006-02-28 | Atc Technologies, Llc | Space-based network architectures for satellite radiotelephone systems |
US7593724B2 (en) * | 2001-09-14 | 2009-09-22 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode |
US7031702B2 (en) * | 2001-09-14 | 2006-04-18 | Atc Technologies, Llc | Additional systems and methods for monitoring terrestrially reused satellite frequencies to reduce potential interference |
US7181161B2 (en) * | 2001-09-14 | 2007-02-20 | Atc Technologies, Llc | Multi-band/multi-mode satellite radiotelephone communications systems and methods |
US6684057B2 (en) * | 2001-09-14 | 2004-01-27 | Mobile Satellite Ventures, Lp | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum |
US7062267B2 (en) * | 2001-09-14 | 2006-06-13 | Atc Technologies, Llc | Methods and systems for modifying satellite antenna cell patterns in response to terrestrial reuse of satellite frequencies |
US7664460B2 (en) * | 2001-09-14 | 2010-02-16 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode |
US6999720B2 (en) * | 2001-09-14 | 2006-02-14 | Atc Technologies, Llc | Spatial guardbands for terrestrial reuse of satellite frequencies |
US7447501B2 (en) * | 2001-09-14 | 2008-11-04 | Atc Technologies, Llc | Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference |
US7039400B2 (en) * | 2001-09-14 | 2006-05-02 | Atc Technologies, Llc | Systems and methods for monitoring terrestrially reused satellite frequencies to reduce potential interference |
US7155340B2 (en) * | 2001-09-14 | 2006-12-26 | Atc Technologies, Llc | Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates |
US7218931B2 (en) * | 2001-09-14 | 2007-05-15 | Atc Technologies, Llc | Satellite radiotelephone systems providing staggered sectorization for terrestrial reuse of satellite frequencies and related methods and radiotelephone systems |
US6785543B2 (en) * | 2001-09-14 | 2004-08-31 | Mobile Satellite Ventures, Lp | Filters for combined radiotelephone/GPS terminals |
US7304939B2 (en) * | 2001-12-03 | 2007-12-04 | Nortel Networks Limited | Communication using simultaneous orthogonal signals |
US7020110B2 (en) * | 2002-01-08 | 2006-03-28 | Qualcomm Incorporated | Resource allocation for MIMO-OFDM communication systems |
US6856787B2 (en) * | 2002-02-12 | 2005-02-15 | Mobile Satellite Ventures, Lp | Wireless communications systems and methods using satellite-linked remote terminal interface subsystems |
US6937857B2 (en) * | 2002-05-28 | 2005-08-30 | Mobile Satellite Ventures, Lp | Systems and methods for reducing satellite feeder link bandwidth/carriers in cellular satellite systems |
US8121605B2 (en) * | 2002-06-27 | 2012-02-21 | Globalstar, Inc. | Resource allocation to terrestrial and satellite services |
US7068975B2 (en) * | 2002-11-26 | 2006-06-27 | The Directv Group, Inc. | Systems and methods for sharing uplink bandwidth among satellites in a common orbital slot |
US7444170B2 (en) * | 2003-03-24 | 2008-10-28 | Atc Technologies, Llc | Co-channel wireless communication methods and systems using nonsymmetrical alphabets |
US7203490B2 (en) * | 2003-03-24 | 2007-04-10 | Atc Technologies, Llc | Satellite assisted push-to-send radioterminal systems and methods |
US6879829B2 (en) * | 2003-05-16 | 2005-04-12 | Mobile Satellite Ventures, Lp | Systems 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 |
US8670705B2 (en) * | 2003-07-30 | 2014-03-11 | Atc Technologies, Llc | Additional intra-and/or inter-system interference reducing systems and methods for satellite communications systems |
US7340213B2 (en) * | 2003-07-30 | 2008-03-04 | Atc Technologies, Llc | Intra- and/or inter-system interference reducing systems and methods for satellite communications systems |
US7113743B2 (en) * | 2003-09-11 | 2006-09-26 | Atc Technologies, Llc | Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint |
US20050090256A1 (en) * | 2003-09-23 | 2005-04-28 | Santanu Dutta | Systems and methods for mobility management in overlaid mobile communications systems |
US8380186B2 (en) * | 2004-01-22 | 2013-02-19 | Atc Technologies, Llc | Satellite with different size service link antennas and radioterminal communication methods using same |
US7453920B2 (en) * | 2004-03-09 | 2008-11-18 | Atc Technologies, Llc | Code synchronization in CDMA satellite wireless communications system using uplink channel detection |
-
2004
- 2004-08-09 US US10/914,515 patent/US20050041619A1/en not_active Abandoned
- 2004-08-13 BR BRPI0413790-6A patent/BRPI0413790A/en not_active Application Discontinuation
- 2004-08-13 MX MXPA06002056A patent/MXPA06002056A/en active IP Right Grant
- 2004-08-13 KR KR1020067003549A patent/KR101095586B1/en active IP Right Grant
- 2004-08-13 WO PCT/US2004/026385 patent/WO2006062494A1/en active Application Filing
- 2004-08-13 JP JP2006546964A patent/JP2007511189A/en active Pending
- 2004-08-13 AU AU2004320903A patent/AU2004320903B8/en not_active Ceased
- 2004-08-13 EP EP04822320A patent/EP1690425A4/en not_active Withdrawn
- 2004-08-13 CN CNA2004800307762A patent/CN1957622A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6400699B1 (en) * | 2000-09-12 | 2002-06-04 | Iospan Wireless, Inc. | Transmission scheduler for a multiple antenna wireless cellular network |
US6721569B1 (en) * | 2000-09-29 | 2004-04-13 | Nortel Networks Limited | Dynamic sub-carrier assignment in OFDM systems |
Non-Patent Citations (1)
Title |
---|
See also references of EP1690425A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101252768B (en) * | 2007-02-25 | 2011-12-14 | 富士通株式会社 | Scheduling apparatus and method |
CN106413006A (en) * | 2016-09-12 | 2017-02-15 | 电子科技大学 | OFDM communication method and system with uniform subband overlapping |
CN106413006B (en) * | 2016-09-12 | 2019-06-21 | 电子科技大学 | A kind of ofdm communication method and system of uniform subband superposition |
Also Published As
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KR20070014107A (en) | 2007-01-31 |
BRPI0413790A (en) | 2008-08-12 |
CN1957622A (en) | 2007-05-02 |
KR101095586B1 (en) | 2011-12-19 |
AU2004320903B8 (en) | 2009-04-30 |
AU2004320903A8 (en) | 2009-04-30 |
JP2007511189A (en) | 2007-04-26 |
AU2004320903B2 (en) | 2008-07-10 |
AU2004320903A1 (en) | 2006-03-16 |
MXPA06002056A (en) | 2007-02-02 |
EP1690425A1 (en) | 2006-08-16 |
EP1690425A4 (en) | 2011-06-15 |
WO2006062494A8 (en) | 2007-01-11 |
US20050041619A1 (en) | 2005-02-24 |
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