ZA200307062B - Communications apparatus and method. - Google Patents
Communications apparatus and method. Download PDFInfo
- Publication number
- ZA200307062B ZA200307062B ZA200307062A ZA200307062A ZA200307062B ZA 200307062 B ZA200307062 B ZA 200307062B ZA 200307062 A ZA200307062 A ZA 200307062A ZA 200307062 A ZA200307062 A ZA 200307062A ZA 200307062 B ZA200307062 B ZA 200307062B
- Authority
- ZA
- South Africa
- Prior art keywords
- satellite
- terrestrial
- uplink
- downlink
- frequency
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001228 spectrum Methods 0.000 claims abstract description 36
- 238000010295 mobile communication Methods 0.000 claims abstract description 13
- 230000009977 dual effect Effects 0.000 claims description 18
- 230000002452 interceptive effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 230000000116 mitigating effect Effects 0.000 claims description 4
- 238000007726 management method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 27
- 230000000694 effects Effects 0.000 description 10
- 230000011664 signaling Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 235000016936 Dendrocalamus strictus Nutrition 0.000 description 1
- 241000500884 Ephemera Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18563—Arrangements for interconnecting multiple systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01301226A EP1231723B1 (fr) | 2001-02-12 | 2001-02-12 | Appareil et méthode de communications mobile en bi-mode terrestre et satellitaire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200307062B true ZA200307062B (en) | 2004-04-08 |
Family
ID=8181703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200307062A ZA200307062B (en) | 2001-02-12 | 2003-09-10 | Communications apparatus and method. |
Country Status (4)
| Country | Link |
|---|---|
| EP (2) | EP1231723B1 (fr) |
| AT (2) | ATE297615T1 (fr) |
| DE (2) | DE60136655D1 (fr) |
| ZA (1) | ZA200307062B (fr) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| US8270898B2 (en) | 2001-09-14 | 2012-09-18 | Atc Technologies, Llc | Satellite-band spectrum utilization for reduced or minimum interference |
| 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 |
| US7203490B2 (en) | 2003-03-24 | 2007-04-10 | Atc Technologies, Llc | Satellite assisted push-to-send radioterminal systems and methods |
| 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 |
| KR101049422B1 (ko) | 2003-09-23 | 2011-07-15 | 에이티씨 테크놀로지즈, 엘엘씨. | 오버레이드 위성 및 지상파 통신 시스템 내의 이동성관리를 위한 시스템 및 방법 |
| US8655398B2 (en) | 2004-03-08 | 2014-02-18 | Atc Technologies, Llc | Communications systems and methods including emission detection |
| 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 |
| US8265549B2 (en) | 2004-05-18 | 2012-09-11 | Atc Technologies, Llc | Satellite communications systems and methods using radiotelephone |
| WO2006020793A2 (fr) | 2004-08-11 | 2006-02-23 | Atc Technologies, Llc | Utilisation de spectre de bande satellite pour une interference reduite ou minimale |
| 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 |
| 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 |
| AU2005323066C1 (en) | 2005-01-05 | 2010-10-28 | 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 |
| US7634229B2 (en) | 2005-03-15 | 2009-12-15 | Atc Technologies, Llc | Intra-system and/or inter-system reuse of feeder link frequencies including interference suppression systems and methods |
| 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 |
| 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 |
| US7623867B2 (en) | 2005-07-29 | 2009-11-24 | Atc Technologies, Llc | Satellite communications apparatus and methods using asymmetrical forward and return link frequency reuse |
| 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 |
| US20090213780A1 (en) * | 2007-02-23 | 2009-08-27 | Viasat, Inc. | Satellite Hub Based Adaptive Allocation Of Frequency Bands |
| 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 |
| EP2484027B1 (fr) | 2009-09-28 | 2017-03-29 | ATC Technologies, LLC | Systèmes et procédés pour d'annulation adaptative des interférences par la formation de faisceaux |
| 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 |
| US10735989B2 (en) | 2017-08-16 | 2020-08-04 | Atc Technologies, Llc | Multi-path TCP over dual networks |
| US10848237B1 (en) * | 2019-07-08 | 2020-11-24 | Dish Wireless L.L.C. | Spectrum sharing for a terrestrial-satellite hybrid environment |
| WO2022023507A1 (fr) * | 2020-07-31 | 2022-02-03 | Sony Group Corporation | Procédés, dispositifs de communications, et équipement d'infrastructure non terrestre |
| CN114554455B (zh) * | 2022-04-27 | 2022-09-13 | 天津七一二移动通信有限公司 | 基于低轨卫星的铁路无线列调融合通信系统及实现方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2105710A1 (fr) * | 1992-11-12 | 1994-05-13 | Raymond Joseph Leopold | Reseau de systemes de communication hierarchiques et methode connexe |
| US5511233A (en) * | 1994-04-05 | 1996-04-23 | Celsat America, Inc. | System and method for mobile communications in coexistence with established communications systems |
| US5584046A (en) * | 1994-11-04 | 1996-12-10 | Cornell Research Foundation, Inc. | Method and apparatus for spectrum sharing between satellite and terrestrial communication services using temporal and spatial synchronization |
| US5884181A (en) * | 1996-01-19 | 1999-03-16 | Bell Communications Research, Inc. | Interference reduction in shared-frequency wireless communication systems |
| US5949766A (en) * | 1996-12-30 | 1999-09-07 | Motorola, Inc. | Ground device for communicating with an elevated communication hub and method of operation thereof |
| US5875180A (en) * | 1997-02-06 | 1999-02-23 | Globalstar L.P. | Satellite telephone interference avoidance system |
-
2001
- 2001-02-12 DE DE60136655T patent/DE60136655D1/de not_active Expired - Lifetime
- 2001-02-12 EP EP01301226A patent/EP1231723B1/fr not_active Expired - Lifetime
- 2001-02-12 DE DE60111347T patent/DE60111347T2/de not_active Expired - Lifetime
- 2001-02-12 AT AT01301226T patent/ATE297615T1/de not_active IP Right Cessation
- 2001-02-12 AT AT05012266T patent/ATE415019T1/de not_active IP Right Cessation
- 2001-02-12 EP EP05012266A patent/EP1569363B1/fr not_active Expired - Lifetime
-
2003
- 2003-09-10 ZA ZA200307062A patent/ZA200307062B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE60111347T2 (de) | 2006-03-16 |
| DE60136655D1 (de) | 2009-01-02 |
| EP1569363B1 (fr) | 2008-11-19 |
| ATE297615T1 (de) | 2005-06-15 |
| ATE415019T1 (de) | 2008-12-15 |
| EP1231723B1 (fr) | 2005-06-08 |
| EP1231723A1 (fr) | 2002-08-14 |
| DE60111347D1 (de) | 2005-07-14 |
| EP1569363A1 (fr) | 2005-08-31 |
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