IT1261466B - Procedimento e circuito per la sintonizzazione selettiva di apparecchiradio. - Google Patents
Procedimento e circuito per la sintonizzazione selettiva di apparecchiradio.Info
- Publication number
- IT1261466B IT1261466B ITRM930277A ITRM930277A IT1261466B IT 1261466 B IT1261466 B IT 1261466B IT RM930277 A ITRM930277 A IT RM930277A IT RM930277 A ITRM930277 A IT RM930277A IT 1261466 B IT1261466 B IT 1261466B
- Authority
- IT
- Italy
- Prior art keywords
- control channels
- radio receiver
- measured
- connection
- power level
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0091—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with means for scanning over a band of frequencies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mobile Radio Communication Systems (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Transceivers (AREA)
- Circuits Of Receivers In General (AREA)
- Transmitters (AREA)
Abstract
Un circuito (400; 806) ed un procedimento (750) per la sintonizzazione selettiva di un radio ricevitore (406; 800) su un canale di frequenza di una serie di canali di frequenza. Il radio ricevitore (406; 800) esplora (436, 482; 836, 882) scelti canali di controllo e misura (468; 868) i livelli di potenza dei segnali generati sui canali di controllo. Soltanto quando i livelli di potenza misurati dei segnali generati attraverso i rispettivi canali di controllo sono superiori ad un certo livello di potenza viene tentata la esecuzione di un allacciamento per comunicazioni con un trasmettitore di tali segnali di dati. Quando un allacciamento per comunicazioni non può essere stabilito, il radio ricevitore (406; 800) si porta ad un livello di potenza ridotto per un predeterminato periodo di tempo, quindi reinserisce la alimentazione ed i livelli di potenza dei segnali trasmessi attraverso i canali di controllo vengono ancora misurati (468; 868). La esecuzione di un allacciamento per comunicazioni con un trasmettitore che trasmette un segnale attraverso uno dei canali di controllo viene tentata se il livello di potenza misurato su tale canale di controllo aumenta oltre un certo valore.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US88080892A | 1992-05-08 | 1992-05-08 |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM930277A0 ITRM930277A0 (it) | 1993-05-03 |
ITRM930277A1 ITRM930277A1 (it) | 1994-11-03 |
IT1261466B true IT1261466B (it) | 1996-05-23 |
Family
ID=25377146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM930277A IT1261466B (it) | 1992-05-08 | 1993-05-03 | Procedimento e circuito per la sintonizzazione selettiva di apparecchiradio. |
Country Status (11)
Country | Link |
---|---|
JP (1) | JP3196211B2 (it) |
CN (1) | CN1035588C (it) |
CA (1) | CA2112809A1 (it) |
DE (2) | DE4392213C2 (it) |
FR (1) | FR2691027B1 (it) |
GB (1) | GB2274750B (it) |
HU (1) | HUT69370A (it) |
IT (1) | IT1261466B (it) |
RU (1) | RU2123771C1 (it) |
SE (1) | SE9400018L (it) |
WO (1) | WO1993023963A1 (it) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07508392A (ja) * | 1993-04-21 | 1995-09-14 | モトローラ・インコーポレーテッド | 無線受信機の再同調のための方法および回路 |
FR2726139A1 (fr) * | 1994-10-19 | 1996-04-26 | Philips Electronics Nv | Recepteur de radio a recherche automatique des stations |
EP0714217B1 (en) * | 1994-11-22 | 2005-07-27 | Ntt Mobile Communications Network Inc. | Method for searching a control channel in a mobile station |
US5940746A (en) * | 1995-12-29 | 1999-08-17 | Motorola, Inc. | Channel scanning apparatus and method |
JP3271504B2 (ja) * | 1996-02-02 | 2002-04-02 | 三菱電機株式会社 | 周波数推定回路およびそれを用いたafc回路 |
GB2320991A (en) * | 1996-12-20 | 1998-07-08 | Dsc Telecom Lp | Channel selection control in a cellular radio communications system |
EP0983701A2 (en) * | 1997-04-14 | 2000-03-08 | Nortel Networks Limited | Method and system for avoiding communication failure in cdma systems |
US6233247B1 (en) | 1998-03-12 | 2001-05-15 | Nortel Networks Limited | Method and system for avoiding communication failure in CDMA systems |
US6396867B1 (en) | 1997-04-25 | 2002-05-28 | Qualcomm Incorporated | Method and apparatus for forward link power control |
GB2332823A (en) * | 1997-12-29 | 1999-06-30 | Samsung Electronics Co Ltd | Sequential selection of control channels for call attempt |
GB9925234D0 (en) * | 1999-10-25 | 1999-12-22 | Simoco Int Ltd | Mobile radio communications systems |
KR100374568B1 (ko) * | 2001-01-17 | 2003-03-03 | 삼성전자주식회사 | 이동단말 파워오프 제어방법 |
EP1482747B1 (en) * | 2003-05-28 | 2006-10-11 | Telefonaktiebolaget LM Ericsson (publ) | Cell search scheduling in a wireless cellular communication network |
JP4551814B2 (ja) * | 2005-05-16 | 2010-09-29 | Okiセミコンダクタ株式会社 | 無線通信装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2087369A5 (it) * | 1970-05-15 | 1971-12-31 | Cit Alcatel | |
DE2402562C3 (de) * | 1974-01-19 | 1978-07-13 | Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg | Verfahren zur automatischen Suche modulierter Funkkanäle |
GB2057267B (en) * | 1979-08-29 | 1983-05-18 | Allcock J A | Sensory isolation tank |
FR2584884B1 (fr) * | 1985-07-09 | 1987-10-09 | Trt Telecom Radio Electr | Procede et dispositif de recherche de canal libre pour un systeme de radio mobile |
CH671124A5 (it) * | 1986-04-30 | 1989-07-31 | Zellweger Uster Ag | |
CA1282837C (en) * | 1987-03-20 | 1991-04-09 | Tetsuya Hanawa | Apparatus for selecting control channel in mobile communication system |
US4905301A (en) * | 1988-07-28 | 1990-02-27 | Motorola, Inc. | Selective system scan for multizone radiotelephone subscriber units |
FI83717C (fi) * | 1989-09-25 | 1991-08-12 | Nokia Mobile Phones Ltd | Foerfarande foer intrimning och kompensation av effektnivaoer i en radiotelefon. |
FI83715C (fi) * | 1989-09-25 | 1991-08-12 | Nokia Mobile Phones Ltd | Logikstyrd intrimning och kompensation av signalnivaoer och deviationer i en radiotelefon. |
JP2867538B2 (ja) * | 1990-01-30 | 1999-03-08 | 日本電気株式会社 | チャンネル選択方式 |
US5119502A (en) * | 1990-08-30 | 1992-06-02 | Telefonaktiebolaget L M Ericsson | Periodic system ordered rescan in a cellular communication system |
JP2927055B2 (ja) * | 1991-07-12 | 1999-07-28 | 日本電気株式会社 | 制御チャンネル捕捉方法とその回路 |
US5203012A (en) * | 1992-02-10 | 1993-04-13 | Motorola, Inc. | Method and apparatus for optimum channel assignment |
-
1993
- 1993-04-19 JP JP52023493A patent/JP3196211B2/ja not_active Expired - Lifetime
- 1993-04-19 DE DE4392213A patent/DE4392213C2/de not_active Expired - Fee Related
- 1993-04-19 DE DE4392213T patent/DE4392213T1/de active Pending
- 1993-04-19 RU RU94014617A patent/RU2123771C1/ru active
- 1993-04-19 HU HU9400043A patent/HUT69370A/hu unknown
- 1993-04-19 GB GB9326218A patent/GB2274750B/en not_active Expired - Lifetime
- 1993-04-19 CA CA002112809A patent/CA2112809A1/en not_active Abandoned
- 1993-04-19 WO PCT/US1993/003692 patent/WO1993023963A1/en active Application Filing
- 1993-05-03 IT ITRM930277A patent/IT1261466B/it active IP Right Grant
- 1993-05-07 FR FR9305496A patent/FR2691027B1/fr not_active Expired - Lifetime
- 1993-05-07 CN CN93105681A patent/CN1035588C/zh not_active Expired - Lifetime
-
1994
- 1994-01-04 SE SE9400018A patent/SE9400018L/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
GB2274750A (en) | 1994-08-03 |
HUT69370A (en) | 1995-09-28 |
DE4392213C2 (de) | 1999-04-29 |
HU9400043D0 (en) | 1994-05-30 |
CN1035588C (zh) | 1997-08-06 |
SE9400018L (sv) | 1994-03-07 |
CN1082786A (zh) | 1994-02-23 |
GB9326218D0 (en) | 1994-04-20 |
JPH06508973A (ja) | 1994-10-06 |
CA2112809A1 (en) | 1993-11-25 |
ITRM930277A0 (it) | 1993-05-03 |
JP3196211B2 (ja) | 2001-08-06 |
FR2691027A1 (fr) | 1993-11-12 |
SE9400018D0 (sv) | 1994-01-04 |
DE4392213T1 (de) | 1994-06-09 |
WO1993023963A1 (en) | 1993-11-25 |
RU2123771C1 (ru) | 1998-12-20 |
ITRM930277A1 (it) | 1994-11-03 |
FR2691027B1 (fr) | 1995-08-11 |
GB2274750B (en) | 1996-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IT1261466B (it) | Procedimento e circuito per la sintonizzazione selettiva di apparecchiradio. | |
MY119406A (en) | Remote control system. | |
IT1262367B (it) | Radiotelefono senza fili cellulare a doppio sistema di trasmissione con monitoraggio della temporizzazione dei sub-canali di dati. | |
US4833467A (en) | Data transmission system | |
MY133553A (en) | Method and apparatus for controlling signal power in a communication system | |
ES8503901A1 (es) | Una estacion terminal para la comunicacion a traves de cables electricos | |
KR840001027A (ko) | 무선전화기의 녹음기 원격제어장치 | |
KR910700578A (ko) | 부호화된 메세지 신호 전송용 전자파 전송기 | |
EP0713299A3 (en) | Method and apparatus for transmitting an intermittent signal in a radio communication | |
DE69217004D1 (de) | Funksystem mit einrichtung zur qualitätsprüfung von funkübertragungskanälen | |
JPS54162905A (en) | Radiotelephony equipment | |
JPS572145A (en) | Radio transmission system | |
JPS6439129A (en) | Communication equipment facilitating transfer of information between vehicle and stational information spot | |
FR2357118A1 (fr) | Dispositif antilocal pour transmission de signaux numeriques | |
SU824466A1 (ru) | Устройство приема и передачииНфОРМАции | |
US3205311A (en) | Multiplexing and communication system with highly damped gated signal generator | |
JPS60165130A (ja) | 内線接続通信方式 | |
KR960016572A (ko) | 케이블 텔레비젼용 송신주파수 안정화회로 | |
JPH07202807A (ja) | 空間伝送赤外光通信装置 | |
ATE165694T1 (de) | Einrichtung zur datenübertragung in energieversorgungs-kabelnetzen | |
DE3061679D1 (en) | Simplex radio communication system with control of the communication direction from a single station | |
JPS63180226A (ja) | 選択呼出送信装置変調回路 | |
JPH04312034A (ja) | データ伝送方法 | |
JPS62104327A (ja) | トンネル無線通信システム | |
JPS5791067A (en) | Data transmission and reception device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted |