DE3837734C3 - Digitales Funkfernsprechsystem - Google Patents
Digitales FunkfernsprechsystemInfo
- Publication number
- DE3837734C3 DE3837734C3 DE3837734A DE3837734A DE3837734C3 DE 3837734 C3 DE3837734 C3 DE 3837734C3 DE 3837734 A DE3837734 A DE 3837734A DE 3837734 A DE3837734 A DE 3837734A DE 3837734 C3 DE3837734 C3 DE 3837734C3
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- subscriber
- channel
- base station
- rpu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/04—Scheduled or contention-free access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
Description
BER Bitfehlerhäufigkeit (bit error rate)
CCT Kanalsteuertask (channel control task)
CCU Kanalsteuereinheit (channel control unit)
CO Zentralamt (central office)
COT Zentralamt-Endstelle (central office terminal)
CRC zyklischer Redundanztest (cyclic redundancy check)
DBM Datenbankmodul (data base module)
LQ Verbindungsqualität (link quality)
MF Störung(malfunction)
MPM Nachrichtenverarbeitungsmodul (message processing module)
MTU Hauptzeitsteuereinheit (master timing unit)
MUX Multiplexer (multiplexer)
PCM Pulscodemodulation (pulse code modulation)
RCC Funksteuerkanal (radio control channel)
HF Hochfrequenz
RPU Funkverarbeitungseinheit (radio processing unit)
RRT entfernte Funkendstelle (remote radio terminal)
SCT Teilnehmersteuertask (subscriber control task)
SDLC synchrone Datenverbindungssteuerung (synchronous data link control)
SM Schedulermodul (scheduler module)
VCU Sprachcodeceinheit (voice codec unit)
Nachdem die RPU durch das Absinken der Verbin dungsqualität betätigt wird, sendet sie eine Nachricht an die SCT, wobei sie einen Frequenzwechsel erfordert. Die SCT schickt diese Nachricht an die Kanalsteuertask (CCT), die an der Teilnehmerstation angeordnet ist, um eine Frequenzwechselbearbeitung durchzuführen, und tritt auch mit dem MPM in der Basisstation für die Zuordnung eines verfügbaren CCU-Kanals in Verbin dung. Der MPM sendet ein Signal an den DBM, um einen verfügbaren Kanal anzugeben, und prüft mit dem Schedulermodul, um eine Zeitposition in dem Plan zu erhalten. Wenn ein Kanal zur Verfügung steht, sendet der MPM eine Nachricht zurück an die SCT, um die Kanalposition neu zu bilden. Wenn kein Kanal zur Ver fügung steht, sendet die SCT ein Besetztsignal an die RPU, und kein Wechsel findet statt.
Claims (1)
- Digitales Funkfernsprechsystem mit einer Basisstation (10), die sich mit einem Zentralamt (22) und Teilnehmerstationen (42) in Verbindung befindet, die mit der Basisstation (10) durch HF-Kanäle verbunden sind, wobei die Basisstation (10) mehrfache, sich sequentiell wiederholende Zeitschlitze und eine Vielzahl von Frequenzkanälen hat und die Zeitschlitze und die Frequenzkanäle den Teilnehmerstationen (42) selektiv zuordenbar sind, gekennzeichnet durch eine Zuordnungseinrichtung, die mindestens einen der Zeitschlitze und Frequenzkanäle irgendeiner der Teilnehmerstationen (42) in Folge einer Verschlechterung in der Übertragung zwischen der Basisstation und der mit ihr sich in Verbindung befindenden Teilnehmerstation (42) während einer bestehenden Verbindung zwischen der Basisstation und der Teilnehmerstation selektiv zuordnet, wobei die Verschlechterung, die entweder Folge eines Schwundes oder einer Störung in der Übertragung ist, durch eine Modulationsänderung korrigiert wird, wobei dazu zwei aneinandergrenzende Zeitschlitze in der selben Frequenz in einen länglichen Zeitschlitz vereinigt werden, wobei dann im Fall eines hohen AVR(Automatische-Verstärkungs-Regelung)-Pegels ein Frequenzwechsel von einer Frequenz mit einem hohen AVR-Pegel zu einer Frequenz mit einem niederen AVR-Pegel vorgenommen wird.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3845017A DE3845017B4 (de) | 1988-11-07 | 1988-11-07 | Digitales Funkfernsprechsystem |
DE3845015A DE3845015B4 (de) | 1988-11-07 | 1988-11-07 | Digitales Funkfernsprechsystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07082238 US4785450B1 (en) | 1987-08-06 | 1987-08-06 | Apparatus and method for obtaining frequency agility in digital communication system |
AU24437/88A AU590168B1 (en) | 1987-08-06 | 1988-10-27 | Apparatus and method for obtaining frequency agility in digital communication systems |
Publications (3)
Publication Number | Publication Date |
---|---|
DE3837734A1 DE3837734A1 (de) | 1990-05-10 |
DE3837734C2 DE3837734C2 (de) | 1995-04-20 |
DE3837734C3 true DE3837734C3 (de) | 2002-11-07 |
Family
ID=25619330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3837734A Expired - Lifetime DE3837734C3 (de) | 1987-08-06 | 1988-11-07 | Digitales Funkfernsprechsystem |
Country Status (7)
Country | Link |
---|---|
US (1) | US4785450B1 (de) |
AU (1) | AU590168B1 (de) |
BE (1) | BE1001871A4 (de) |
DE (1) | DE3837734C3 (de) |
FR (1) | FR2638920A1 (de) |
GB (1) | GB2224414C (de) |
NL (1) | NL191725C (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10329846A1 (de) * | 2003-07-02 | 2005-02-03 | Disetronic Licensing Ag | System und Verfahren zur Kommunikationsüberwachung |
Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675863A (en) | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
US4777633A (en) * | 1987-08-14 | 1988-10-11 | International Mobile Machines Corp. | Base station for wireless digital telephone system |
US7106819B1 (en) * | 1987-11-20 | 2006-09-12 | Interdigital Technology Corporation | Plural subscriber system utilizing synchronized timeslots on a single frequency |
US5495508A (en) * | 1987-11-20 | 1996-02-27 | Interdigital Technology Corporation | Base station emulator |
US5930297A (en) * | 1989-11-20 | 1999-07-27 | Interdigital Technology Corporation | Base station emulator |
US4935927A (en) * | 1987-11-20 | 1990-06-19 | International Mobile Machines Corporation | Base station emulator |
US4866710A (en) * | 1988-02-22 | 1989-09-12 | Motorola, Inc. | Reuse groups for scan monitoring in digital cellular systems |
SE460749B (sv) * | 1988-03-15 | 1989-11-13 | Ericsson Telefon Ab L M | Foerfarande att oeverfoera datainformation i ett cellindelat mobilradiokommunikationssystem |
US7606575B2 (en) * | 1988-08-04 | 2009-10-20 | Broadcom Corporation | Remote radio data communication system with data rate switching |
US20010050943A1 (en) * | 1989-08-03 | 2001-12-13 | Mahany Ronald L. | Radio frequency communication network having adaptive communication parameters |
US4881225A (en) * | 1988-08-31 | 1989-11-14 | Rockwell International Corporation | Digital loop carrier system having multiplexed interrupt structure |
JPH0624366B2 (ja) * | 1988-11-24 | 1994-03-30 | 日本電気株式会社 | ネットワーク障害回復方式 |
US5042082A (en) * | 1989-06-26 | 1991-08-20 | Telefonaktiebolaget L. M. Ericsson | Mobile assisted handoff |
US5257401A (en) * | 1989-04-17 | 1993-10-26 | Telefonaktiebolaget L M Ericsson | Method of maintaining an established connection in a mobile radio system comprising both analog and digital radio channels |
US5020056A (en) * | 1989-05-02 | 1991-05-28 | General Electric Company | Reduction of synchronous fading effects by time hopping of user slots in TDMA frames |
GB2232326A (en) * | 1989-05-26 | 1990-12-05 | Philips Electronic Associated | Data transmission over a tdm duplex frequency channel |
US4949395A (en) * | 1989-07-07 | 1990-08-14 | Telefonaktiebolaget L M Ericsson | Method and arrangement for dynamically allocating time slots to connections in a digital mobile radio system |
US5701297A (en) * | 1989-09-27 | 1997-12-23 | Motorola, Inc. | Data over cellular |
SE8903455D0 (sv) * | 1989-10-19 | 1989-10-19 | Joakim Nelson | Dynamiska digitala foerbindelsenaet (dfn) |
US5047763A (en) * | 1989-11-30 | 1991-09-10 | Motorola, Inc. | Selective call system with message rebroadcasting over another selective call system |
JP3036854B2 (ja) * | 1990-12-21 | 2000-04-24 | 日本電気株式会社 | 干渉検出回路 |
US5229996A (en) * | 1991-02-28 | 1993-07-20 | Telefonaktiebolaget L M Ericsson | Split-window time alignment |
US5504936A (en) * | 1991-04-02 | 1996-04-02 | Airtouch Communications Of California | Microcells for digital cellular telephone systems |
US5243598A (en) * | 1991-04-02 | 1993-09-07 | Pactel Corporation | Microcell system in digital cellular |
TW327488U (en) * | 1991-05-29 | 1998-02-21 | Video Tech Eng | Digital cordless telephone apparatus |
FI88991C (fi) * | 1991-10-03 | 1993-07-26 | Nokia Telecommunications Oy | Allokeringsfoerfarande foer radiokanaler |
FR2682839B1 (fr) * | 1991-10-22 | 1993-12-10 | Dassault Automatismes Telecommun | Dispositif telephonique perfectionne pour reseau de communication telephonique a postes fixes et postes autonomes. |
SE9200283D0 (sv) * | 1992-02-03 | 1992-02-03 | Peter Aahl | Dynamisk varierbar radiostation-dvr |
US5452290A (en) * | 1992-10-26 | 1995-09-19 | Motorola, Inc. | Look ahead channel switching transceiver |
US5722040A (en) * | 1993-02-04 | 1998-02-24 | Pacific Communication Sciences, Inc. | Method and apparatus of frequency generation for use with digital cordless telephones |
US5546383A (en) * | 1993-09-30 | 1996-08-13 | Cooley; David M. | Modularly clustered radiotelephone system |
US5771449A (en) * | 1994-03-17 | 1998-06-23 | Endlink, Inc. | Sectorized multi-function communication system |
EP0998156A3 (de) * | 1994-03-17 | 2000-05-24 | Endlink, Inc. | Sektorisierte zellulare Multifunktionsfunkkommunikation |
US6418131B1 (en) | 1994-06-17 | 2002-07-09 | Lake Communications Limited | Spectrum monitoring for PSTN subscribers |
US6058104A (en) * | 1994-06-17 | 2000-05-02 | Home Wireless Networks, Inc. | Communications webs for PSTN subscribers |
US6404761B1 (en) | 1994-06-17 | 2002-06-11 | Home Wireless Networks, Inc. | Communications webs with personal communications links for PSTN subscribers |
MY114291A (en) * | 1995-01-31 | 2002-09-30 | Qualcomm Inc | Concentrated subscriber system for wireless local loop |
US5574974A (en) * | 1995-03-20 | 1996-11-12 | Telefonaktiebolaget Lm Ericsson | Adaptive channel allocation in a mobile communications system |
US5734979A (en) | 1995-05-04 | 1998-03-31 | Interwave Communications International, Ltd. | Cellular base station with intelligent call routing |
US5781582A (en) * | 1995-05-04 | 1998-07-14 | Interwave Communications International Ltd. | Frequency agile transceiver with multiple frequency synthesizers per transceiver |
US5682403A (en) * | 1995-05-04 | 1997-10-28 | Wavelink Communications | Spread spectrum communication network signal processor |
US5697056A (en) * | 1995-05-08 | 1997-12-09 | Motorola, Inc. | Communication system in which radio subscriber units mitigate interference |
US5754536A (en) * | 1995-10-30 | 1998-05-19 | Motorola, Inc. | Digital speech interpolation method and apparatus |
US5818825A (en) * | 1995-11-29 | 1998-10-06 | Motorola, Inc. | Method and apparatus for assigning communications channels in a cable telephony system |
DE19612108A1 (de) * | 1996-03-27 | 1997-10-02 | Bosch Gmbh Robert | Punkt-zu-Mehrpunkt Funkübertragungssystem |
DE19620843B4 (de) * | 1996-05-23 | 2005-08-11 | Siemens Ag | Verfahren zur Modulation eines Modulationsträgers und Mobil-Kommunikationssystem |
US6111870A (en) | 1996-11-07 | 2000-08-29 | Interdigital Technology Corporation | Method and apparatus for compressing and transmitting high speed data |
US6157627A (en) * | 1997-06-23 | 2000-12-05 | Telefonaktiebolaget Lm Ericsson | Channel allocation for mixed multislot services |
WO1999009680A1 (fr) * | 1997-08-20 | 1999-02-25 | Mitsubishi Denki Kabushiki Kaisha | Systeme de communication mobile |
US9118387B2 (en) | 1997-11-03 | 2015-08-25 | Qualcomm Incorporated | Pilot reference transmission for a wireless communication system |
US7184426B2 (en) | 2002-12-12 | 2007-02-27 | Qualcomm, Incorporated | Method and apparatus for burst pilot for a time division multiplex system |
DE19805546C2 (de) * | 1998-02-11 | 2000-02-17 | Siemens Ag | Verfahren und Funkstation zur Datenübertragung |
BR0012049A (pt) * | 1999-06-29 | 2002-03-12 | Siemens Information And Comuni | Método e sistema para a coordenação de unidades móveis mestre com uma estação de base escrava |
US8064409B1 (en) | 1999-08-25 | 2011-11-22 | Qualcomm Incorporated | Method and apparatus using a multi-carrier forward link in a wireless communication system |
US6621804B1 (en) | 1999-10-07 | 2003-09-16 | Qualcomm Incorporated | Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel |
US6665296B1 (en) | 1999-12-09 | 2003-12-16 | Social Fabric Corporation | Network access communication system |
FR2806577B1 (fr) * | 2000-03-16 | 2002-10-11 | Cit Alcatel | Systeme de telecommunication dans lequel chaque terminal comporte plusieurs connexions |
JP3518597B2 (ja) * | 2000-10-05 | 2004-04-12 | 日本電気株式会社 | 移動通信システムおよび非同期干渉回避方法 |
US6973098B1 (en) | 2000-10-25 | 2005-12-06 | Qualcomm, Incorporated | Method and apparatus for determining a data rate in a high rate packet data wireless communications system |
US7068683B1 (en) | 2000-10-25 | 2006-06-27 | Qualcomm, Incorporated | Method and apparatus for high rate packet data and low delay data transmissions |
KR101193332B1 (ko) | 2007-11-21 | 2012-10-19 | 콸콤 인코포레이티드 | 타임슬롯 스와핑을 위한 방법 및 장치 |
US8811200B2 (en) | 2009-09-22 | 2014-08-19 | Qualcomm Incorporated | Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2659635A1 (de) * | 1976-12-30 | 1978-07-06 | Siemens Ag | Verfahren zur digitalen informationsuebertragung ueber funk |
US4215244A (en) * | 1978-12-18 | 1980-07-29 | The United States Of America As Represented By The Secretary Of The Army | Self-adaptive mobile subscriber access system employing time division multiple accessing |
US4519068A (en) * | 1983-07-11 | 1985-05-21 | Motorola, Inc. | Method and apparatus for communicating variable length messages between a primary station and remote stations of a data communications system |
DE3447107A1 (de) * | 1984-12-22 | 1986-06-26 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur nachrichtenuebertragung in einem digitalen funkuebertragungssystem |
DE3609395A1 (de) * | 1985-03-20 | 1986-09-25 | International Mobile Machines Corp., Philadelphia, Pa. | Kommunikationssystem |
JPS63187739A (ja) * | 1987-01-30 | 1988-08-03 | Nippon Telegr & Teleph Corp <Ntt> | 回線割当制御方式 |
US4777633A (en) * | 1987-08-14 | 1988-10-11 | International Mobile Machines Corp. | Base station for wireless digital telephone system |
Family Cites Families (7)
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US3764915A (en) * | 1971-06-25 | 1973-10-09 | Bell Telephone Labor Inc | Dynamic program control for channel assignment in mobile communication systems |
US4355412A (en) * | 1979-04-10 | 1982-10-19 | Nissan Motor Company, Limited | Preset station selecting device in a radio receiver |
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DE3527329A1 (de) * | 1985-07-31 | 1987-02-05 | Philips Patentverwaltung | Digitales funkuebertragungssystem mit variabler zeitschlitzdauer der zeitschlitze im zeitmultiplexrahmen |
SE455750B (sv) * | 1987-06-11 | 1988-08-01 | Ericsson Telefon Ab L M | Digitalt tidsmultiplext mobiltelefonisystem med ett effektivt utnyttjande av varje tidsram |
US4866710A (en) * | 1988-02-22 | 1989-09-12 | Motorola, Inc. | Reuse groups for scan monitoring in digital cellular systems |
-
1987
- 1987-08-06 US US07082238 patent/US4785450B1/en not_active Expired - Lifetime
-
1988
- 1988-10-25 GB GB8824922A patent/GB2224414C/en not_active Expired - Lifetime
- 1988-10-27 AU AU24437/88A patent/AU590168B1/en not_active Expired
- 1988-11-07 DE DE3837734A patent/DE3837734C3/de not_active Expired - Lifetime
- 1988-11-09 BE BE8801283A patent/BE1001871A4/fr not_active IP Right Cessation
- 1988-11-09 FR FR8814617A patent/FR2638920A1/fr active Granted
- 1988-11-14 NL NL8802798A patent/NL191725C/nl not_active IP Right Cessation
Patent Citations (8)
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DE2659635A1 (de) * | 1976-12-30 | 1978-07-06 | Siemens Ag | Verfahren zur digitalen informationsuebertragung ueber funk |
US4215244A (en) * | 1978-12-18 | 1980-07-29 | The United States Of America As Represented By The Secretary Of The Army | Self-adaptive mobile subscriber access system employing time division multiple accessing |
US4519068A (en) * | 1983-07-11 | 1985-05-21 | Motorola, Inc. | Method and apparatus for communicating variable length messages between a primary station and remote stations of a data communications system |
DE3447107A1 (de) * | 1984-12-22 | 1986-06-26 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur nachrichtenuebertragung in einem digitalen funkuebertragungssystem |
DE3609395A1 (de) * | 1985-03-20 | 1986-09-25 | International Mobile Machines Corp., Philadelphia, Pa. | Kommunikationssystem |
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
JPS63187739A (ja) * | 1987-01-30 | 1988-08-03 | Nippon Telegr & Teleph Corp <Ntt> | 回線割当制御方式 |
US4777633A (en) * | 1987-08-14 | 1988-10-11 | International Mobile Machines Corp. | Base station for wireless digital telephone system |
Non-Patent Citations (6)
Title |
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Bulletin SEV VSE 79 (1988) S. 603-608, 937-942, 1318-1324, H. Ochsner: "Das zukünftige paneuropä- ische Mobilfunksystem" * |
Calhoun George, "Digital Celluar radio", Verlag: Artech House Inc., ISBN 0-89006-266-8, Kap.8 u.9 * |
GSM Recommendation, 05.08. Version 01.04.00,"Radio Sub-System Link Control", 7. Jan. 1987 * |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10329846A1 (de) * | 2003-07-02 | 2005-02-03 | Disetronic Licensing Ag | System und Verfahren zur Kommunikationsüberwachung |
DE10329846B4 (de) * | 2003-07-02 | 2009-01-15 | Disetronic Licensing Ag | System und Verfahren zur Kommunikationsüberwachung |
Also Published As
Publication number | Publication date |
---|---|
DE3837734A1 (de) | 1990-05-10 |
GB2224414C (en) | 2006-09-13 |
US4785450B1 (en) | 1999-10-12 |
NL191725B (nl) | 1995-12-01 |
US4785450A (en) | 1988-11-15 |
NL8802798A (nl) | 1990-06-01 |
GB2224414B (en) | 1993-10-27 |
FR2638920A1 (fr) | 1990-05-11 |
BE1001871A4 (fr) | 1990-04-03 |
GB8824922D0 (en) | 1988-11-30 |
NL191725C (nl) | 2002-08-21 |
FR2638920B1 (de) | 1997-02-28 |
DE3837734C2 (de) | 1995-04-20 |
GB2224414A (en) | 1990-05-02 |
AU590168B1 (en) | 1989-10-26 |
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Legal Events
Date | Code | Title | Description |
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