WO1998038816B1 - Planification et attribution de frequences radioelectriques dans un environnement a spectre discontinu - Google Patents
Planification et attribution de frequences radioelectriques dans un environnement a spectre discontinuInfo
- Publication number
- WO1998038816B1 WO1998038816B1 PCT/US1998/002691 US9802691W WO9838816B1 WO 1998038816 B1 WO1998038816 B1 WO 1998038816B1 US 9802691 W US9802691 W US 9802691W WO 9838816 B1 WO9838816 B1 WO 9838816B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channels
- discontiguous
- block
- adjacent
- channelization
- Prior art date
Links
- 238000001228 spectrum Methods 0.000 title claims abstract 25
- 238000000926 separation method Methods 0.000 claims abstract 15
- 230000001413 cellular Effects 0.000 claims abstract 11
- 230000001702 transmitter Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000006011 modification reaction Methods 0.000 abstract 1
Abstract
L'invention porte sur des techniques et des systèmes, qui, permettant de formaliser une planification des fréquences à spectre discontinu, maximisent les capacités du système tout en minimisant l'éventualité d'une survenue de brouillage dans le canal adjacent. Dans le contexte d'une plan d'ensemble des fréquences du système, il est possible de faire intervenir une séparation spatiale pour décaler le chevauchement résultant d'un mappage de découpage en canaux lorsque des fréquences supplémentaires font défaut. On peut alors utiliser une modification et/ou une définition site par site pour empêcher la survenue de produits d'intermodulation et/ou des brouillages dans le canal adjacent. Il faut alors prendre en considération un certain nombre de facteurs, au nombre desquels, notamment, la position du canal de commande de canal et la séparation dans un nouveau spectre, l'utilisation de blocs de probabilité, les seuils pour brouillage dans le canal adjacent, le brouillage dans le canal adjacent symétrique contre brouillage asymétrique, le type de plan de fréquence, les effets d'intermodulation, la topographie locale, les conditions d'environnement de fréquence et la disponibilité du site. Ces techniques se révèlent des plus utiles, mais sans se limiter à cet usage, s'agissant d'établir un système de communication radio cellulaire utilisant une bande de fréquence inférieure par superposition d'un découpage en canaux de 30 kHz sur des parties de bande de radio mobile spécialisé (SMR) à découpage de canaux de 25 kHz.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9807764-3A BR9807764A (pt) | 1997-02-26 | 1998-02-13 | Processos para derivar freqüências de operação de rf não contíguas para um sistema de rádio comunicações e para derivar um plano de freqüência para um sistema de comunicações rádio celulares, sistema de rádio celular de banda baixa e, sistema de comunicações rádio telefônicas celulares de banda baixa. |
CA002282372A CA2282372A1 (fr) | 1997-02-26 | 1998-02-13 | Planification et attribution de frequences radioelectriques dans un environnement a spectre discontinu |
AU61592/98A AU6159298A (en) | 1997-02-26 | 1998-02-13 | Radio frequency planning and assignment in a discontiguous spectrum environment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/806,934 | 1997-02-26 | ||
US08/806,934 US5960351A (en) | 1997-02-26 | 1997-02-26 | Radio frequency planning and assignment in a discontiguous spectrum environment |
Publications (4)
Publication Number | Publication Date |
---|---|
WO1998038816A2 WO1998038816A2 (fr) | 1998-09-03 |
WO1998038816A3 WO1998038816A3 (fr) | 1999-01-07 |
WO1998038816B1 true WO1998038816B1 (fr) | 1999-02-18 |
WO1998038816A9 WO1998038816A9 (fr) | 1999-03-18 |
Family
ID=25195167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/002691 WO1998038816A2 (fr) | 1997-02-26 | 1998-02-13 | Planification et attribution de frequences radioelectriques dans un environnement a spectre discontinu |
Country Status (5)
Country | Link |
---|---|
US (1) | US5960351A (fr) |
AU (1) | AU6159298A (fr) |
BR (1) | BR9807764A (fr) |
CA (1) | CA2282372A1 (fr) |
WO (1) | WO1998038816A2 (fr) |
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US8027249B2 (en) | 2006-10-18 | 2011-09-27 | Shared Spectrum Company | Methods for using a detector to monitor and detect channel occupancy |
US8055204B2 (en) * | 2007-08-15 | 2011-11-08 | Shared Spectrum Company | Methods for detecting and classifying signals transmitted over a radio frequency spectrum |
US7564816B2 (en) | 2006-05-12 | 2009-07-21 | Shared Spectrum Company | Method and system for determining spectrum availability within a network |
US9538388B2 (en) | 2006-05-12 | 2017-01-03 | Shared Spectrum Company | Method and system for dynamic spectrum access |
US8326313B2 (en) | 2006-05-12 | 2012-12-04 | Shared Spectrum Company | Method and system for dynamic spectrum access using detection periods |
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US8997170B2 (en) * | 2006-12-29 | 2015-03-31 | Shared Spectrum Company | Method and device for policy-based control of radio |
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US8818283B2 (en) | 2008-08-19 | 2014-08-26 | Shared Spectrum Company | Method and system for dynamic spectrum access using specialty detectors and improved networking |
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-
1997
- 1997-02-26 US US08/806,934 patent/US5960351A/en not_active Expired - Lifetime
-
1998
- 1998-02-13 WO PCT/US1998/002691 patent/WO1998038816A2/fr active Application Filing
- 1998-02-13 CA CA002282372A patent/CA2282372A1/fr not_active Abandoned
- 1998-02-13 AU AU61592/98A patent/AU6159298A/en not_active Abandoned
- 1998-02-13 BR BR9807764-3A patent/BR9807764A/pt not_active Application Discontinuation
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