HK1016801A1 - Cellular radiotelephone system with dropped call protection - Google Patents
Cellular radiotelephone system with dropped call protectionInfo
- Publication number
- HK1016801A1 HK1016801A1 HK99101466A HK99101466A HK1016801A1 HK 1016801 A1 HK1016801 A1 HK 1016801A1 HK 99101466 A HK99101466 A HK 99101466A HK 99101466 A HK99101466 A HK 99101466A HK 1016801 A1 HK1016801 A1 HK 1016801A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- base site
- handoff
- radiotelephone
- call
- message
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/38—Reselection control by fixed network equipment
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/150,253 US4811380A (en) | 1988-01-29 | 1988-01-29 | Cellular radiotelephone system with dropped call protection |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1016801A1 true HK1016801A1 (en) | 1999-11-05 |
Family
ID=22533712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK99101466A HK1016801A1 (en) | 1988-01-29 | 1999-04-10 | Cellular radiotelephone system with dropped call protection |
Country Status (10)
Country | Link |
---|---|
US (1) | US4811380A (fi) |
EP (2) | EP0325713B1 (fi) |
JP (1) | JP2586631B2 (fi) |
AT (2) | ATE177280T1 (fi) |
CA (1) | CA1280466C (fi) |
DE (2) | DE3856584T2 (fi) |
ES (1) | ES2131040T3 (fi) |
FI (1) | FI100084B (fi) |
GR (1) | GR3030388T3 (fi) |
HK (1) | HK1016801A1 (fi) |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1293042C (en) * | 1988-02-04 | 1991-12-10 | Ian Macmillan | Communication system supporting remote operations |
SE460449B (sv) * | 1988-02-29 | 1989-10-09 | Ericsson Telefon Ab L M | Cellindelat digitalt mobilradiosystem och foerfarande foer att oeverfoera information i ett digitalt cellindelat mobilradiosystem |
SE8802229D0 (sv) | 1988-06-14 | 1988-06-14 | Ericsson Telefon Ab L M | Forfarande vid mobilradiostation |
US5327577A (en) * | 1988-06-14 | 1994-07-05 | Telefonaktiebolaget L M Ericsson | Handover method for mobile radio system |
US4984290A (en) * | 1988-08-04 | 1991-01-08 | Motorola, Inc. | Method of controlling communications in a cellular radiotelephone system |
US5189734A (en) * | 1988-11-16 | 1993-02-23 | U.S. Philips Corporation | Cellular radio system |
US5020093A (en) * | 1989-06-23 | 1991-05-28 | Motorola, Inc. | Cellular telephone operable on different cellular telephone systems |
US5008925A (en) * | 1989-12-20 | 1991-04-16 | Motorola, Inc. | Cellular telephone responsive to service availability for operating on different cellular telephone systems |
NL8901874A (nl) * | 1989-07-20 | 1991-02-18 | Philips Nv | Planaire josephson inrichting. |
US4972460A (en) * | 1989-09-29 | 1990-11-20 | Motorola, Inc. | Automatic equivalent temporary talkgroup assignment in a roaming trunking environment |
EP0443503B1 (en) * | 1990-02-23 | 1997-07-30 | Mitsubishi Denki Kabushiki Kaisha | Mobile communication system |
US5036531A (en) * | 1990-02-27 | 1991-07-30 | Motorola Inc. | Local PSTN interconnect with remote signal link processing |
DE69125425T2 (de) * | 1990-07-16 | 1997-10-23 | Sumitomo Electric Industries | Verfahren zum Herstellen einer supraleitenden Einrichtung aus supraleitendem Material und dadurch hergestellte supraleitende Einrichtung |
US5230082A (en) * | 1990-08-16 | 1993-07-20 | Telefonaktiebolaget L M Ericsson | Method and apparatus for enhancing signalling reliability in a cellular mobile radio telephone system |
EP0475348B1 (en) * | 1990-09-11 | 1999-03-10 | Nec Corporation | Cordless key telephone system having zone switching function |
US5276906A (en) * | 1990-09-27 | 1994-01-04 | Motorola, Inc. | Radiotelephone system incorporating two thresholds for handoff |
US5140627A (en) * | 1990-10-09 | 1992-08-18 | Telefonaktiebolaget L M Ericsson | Handoff procedure that minimizes disturbances to dtmf signalling in a cellular radio system |
US5175867A (en) * | 1991-03-15 | 1992-12-29 | Telefonaktiebolaget L M Ericsson | Neighbor-assisted handoff in a cellular communications system |
US5375163A (en) * | 1991-04-25 | 1994-12-20 | Matsushita Electric Industrial Co., Ltd. | Multi-channel cordless telephone system for maintaining master-slave communication |
US5355515A (en) * | 1991-06-12 | 1994-10-11 | Telefonaktiebolaget L M Ericsson | Method and apparatus for estimating initial time alignment in a cellular communications network |
SE468696B (sv) * | 1991-06-20 | 1993-03-01 | Ericsson Telefon Ab L M | Foerfarande att utfoera handover i ett mobilradiosystem med celler i flera skikt |
US5345467A (en) * | 1991-07-10 | 1994-09-06 | Interdigital Technology Corp. | CDMA cellular hand-off apparatus and method |
US5280541A (en) * | 1991-10-24 | 1994-01-18 | Motorola, Inc. | Cordless telephone communication system link re-establishment protocol |
US5212808A (en) * | 1991-11-08 | 1993-05-18 | Teknekron Communications Systems, Inc. | Method and an apparatus for re-establishing wireless communication between a base unit and a remote unit |
GB2269726B (en) * | 1992-06-22 | 1996-08-28 | Motorola Inc | Alternate base-site transmission of a handoff command in a communication syste m |
US5440613A (en) * | 1992-12-30 | 1995-08-08 | At&T Corp. | Architecture for a cellular wireless telecommunication system |
SE9300681D0 (sv) * | 1993-03-01 | 1993-03-01 | Ericsson Telefon Ab L M | A method and an apparatusfor handing off a mobile station from a first to a second channel in a mobile communication system |
US5375123A (en) * | 1993-02-05 | 1994-12-20 | Telefonakitebolaget L. M. Ericsson | Allocation of channels using interference estimation |
KR100348945B1 (ko) * | 1993-05-20 | 2003-01-10 | 텔레폰아크티에볼라게트 엘엠 에릭슨 | 단절후호출재확립방법및장치 |
CN1111472A (zh) * | 1993-07-02 | 1995-11-08 | 莫托罗拉公司 | 转接无线电话呼叫的方法和设备 |
US5483664A (en) * | 1993-07-26 | 1996-01-09 | Motorola, Inc. | Cellular communications with scheduled handoffs |
US5517674A (en) * | 1993-08-09 | 1996-05-14 | Telefonaktiebolaget Lm Ericsson | Low capacity mobile assisted handoff in a cellular communications network |
US5537679A (en) * | 1994-08-01 | 1996-07-16 | Motorola, Inc. | Communication network with flexible handoff scheduling for mobile nodes |
US5488640A (en) * | 1994-08-31 | 1996-01-30 | Motorola, Inc. | Method and apparatus for re-establishment of a communication |
US6914965B1 (en) | 1994-09-30 | 2005-07-05 | Qualcomm Incorporated | Method and apparatus of providing a single state mobile unit in a modem connection comprising a wireless link |
US5590177A (en) * | 1994-09-30 | 1996-12-31 | Motorola, Inc. | Method for preventing a dropped call during a handoff in a radiotelephone system |
US5845211A (en) * | 1995-01-13 | 1998-12-01 | Bell South Corporation | Wireless digital network |
JP3599486B2 (ja) * | 1995-07-31 | 2004-12-08 | キヤノン株式会社 | 無線制御装置、無線通信システム及び無線制御装置の制御方法 |
US5914668A (en) * | 1996-08-30 | 1999-06-22 | Lucent Technologies Inc. | Wireless terminal controlled mobility operational parameters |
US6473602B1 (en) | 1996-10-28 | 2002-10-29 | Ericsson Inc. | Mobile assisted handoff in radiocommunication systems |
US5937349A (en) * | 1996-10-29 | 1999-08-10 | Motorola, Inc. | Method and system of tracking dynamic communication parameters during a link interruption |
EP1739861B1 (en) | 1996-12-26 | 2009-09-16 | Ntt Mobile Communications Network Inc. | Frame synchronization method and circuit |
US6269149B1 (en) * | 1996-12-30 | 2001-07-31 | Paradyne Corporation | System and method for enhancing a communication link |
SE511882C2 (sv) | 1997-02-25 | 1999-12-13 | Ericsson Telefon Ab L M | Metod och anordning för återupprättande av en samtalsförbindelse i ett mobilt telekommunikationssystem |
US5913167A (en) * | 1997-02-28 | 1999-06-15 | Motorola, Inc. | Method for transferring a communication link in a wireless communication system |
CA2231938C (en) * | 1997-04-09 | 2001-10-30 | At&T Wireless Services, Inc. | System and method for processing dropped calls |
US5995830A (en) * | 1997-04-09 | 1999-11-30 | At&T Wireless Services Inc. | System and method for processing dropped calls |
US6356622B1 (en) | 1997-05-02 | 2002-03-12 | Paradyne Corporation | System and apparatus for enhancing a network link |
US6115608A (en) * | 1997-09-10 | 2000-09-05 | Northern Telecom Limited | Intersystem handover method and apparatus |
US6091962A (en) * | 1998-01-30 | 2000-07-18 | Motorola, Inc. | Method and apparatus for re-establishing a communication in a wireless communication system |
US6990349B1 (en) | 1998-11-20 | 2006-01-24 | Nortel Networks Limited | System and method for reconnecting a mobile station to an emergency operator |
KR100330246B1 (ko) * | 1998-12-03 | 2002-09-26 | 삼성전자 주식회사 | 이동통신시스템에서의호장애시호자동재접속방법 |
KR100277131B1 (ko) * | 1998-12-03 | 2001-01-15 | 윤종용 | 이동통신시스템에서의호장애시호자동재접속방법 |
KR100342565B1 (ko) * | 1999-04-20 | 2002-07-04 | 윤종용 | 코드분할 다중접속 시스템의 단말기에서 단절된 호 복원 방법및 그 통보 방법 |
US6445918B1 (en) * | 1999-11-01 | 2002-09-03 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for saving dropped calls |
US6574198B1 (en) * | 2000-07-06 | 2003-06-03 | Ericsson Inc. | Systems and methods for maintaining a signaling link in a communications network |
US6845245B2 (en) * | 2000-12-22 | 2005-01-18 | Denso Corporation | Access parameter adaptation and packet data resource management using detailed mobile status information |
US7676224B1 (en) * | 2001-07-06 | 2010-03-09 | At&T Mobility Ii Llc | Enhanced communication service for predicting and handling communication interruption |
CA2461319E (en) | 2001-10-01 | 2011-11-15 | Research In Motion Limited | Contact management for mobile communication devices in wireless packet switched networks |
CN1307576C (zh) * | 2001-12-19 | 2007-03-28 | 汤姆森特许公司 | 在移动网络和无线局域网之间切换移动终端的方法和设备 |
US7171226B2 (en) * | 2002-11-19 | 2007-01-30 | General Motors Corporation | Communication retry method over digital wireless systems |
EP1588525B1 (en) * | 2003-01-23 | 2009-07-08 | Research In Motion Limited | Methods and apparatus for re-establishing communication for a wireless communication device after a communication loss in a wireless communication network |
US7747244B2 (en) | 2003-01-23 | 2010-06-29 | Research In Motion Limited | Methods and apparatus for re-establishing communication for a wireless communication device after a communication loss in a wireless communication network |
WO2005025092A1 (en) * | 2003-09-04 | 2005-03-17 | Samsung Electronics Co., Ltd. | System and method for selecting a serving base station according to a drop of a mobile subscriber station in a broadband wireless access communication system |
US8503430B2 (en) * | 2006-11-21 | 2013-08-06 | Qualcomm Incorporated | Dynamic operational mode management for a wireless terminal |
US8644811B2 (en) * | 2007-04-11 | 2014-02-04 | Cisco Technology, Inc. | System, method, and apparatus for avoiding call drop for a wireless phone |
US8195143B2 (en) * | 2008-11-04 | 2012-06-05 | Broadcom Corporation | Management unit for facilitating inter-network hand-off for a multiservice communication device |
US10516777B1 (en) * | 2018-09-11 | 2019-12-24 | Qualcomm Incorporated | Enhanced user experience for voice communication |
Family Cites Families (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3663762A (en) * | 1970-12-21 | 1972-05-16 | Bell Telephone Labor Inc | Mobile communication system |
JPS5228521B2 (fi) * | 1972-07-15 | 1977-07-27 | ||
US3898390A (en) * | 1973-05-15 | 1975-08-05 | Martin Marietta Corp | Multiple zone communications system and method |
US4028500A (en) * | 1973-05-15 | 1977-06-07 | Martin Marietta Corporation | Mobile unit supervisory control sequencer and method |
US3906166A (en) * | 1973-10-17 | 1975-09-16 | Motorola Inc | Radio telephone system |
US4268722A (en) * | 1978-02-13 | 1981-05-19 | Motorola, Inc. | Radiotelephone communications system |
JPS5595438A (en) * | 1979-01-11 | 1980-07-19 | Nec Corp | Channel switching system of car telephone |
GB2063011B (en) * | 1979-11-09 | 1983-10-12 | Philips Electronic Associated | Information transmission system |
US4398063A (en) * | 1980-10-24 | 1983-08-09 | Hass Ronald J | Mobile telephone interoffice handoff limiting method and apparatus |
US4430755A (en) * | 1981-05-14 | 1984-02-07 | Motorola, Inc. | Portable radio telephone |
US4395594A (en) * | 1981-08-24 | 1983-07-26 | Bell Telephone Laboratories, Incorporated | Method and apparatus for forcing randomization of idle channel seizures |
JPS58123243A (ja) * | 1982-01-19 | 1983-07-22 | Nec Corp | 追跡通話チヤンネル切替方式における新チヤンネル指定方式 |
JPS58164336A (ja) * | 1982-03-24 | 1983-09-29 | Nec Corp | 無線電話交換方式 |
JPS58186239A (ja) * | 1982-04-24 | 1983-10-31 | Nippon Telegr & Teleph Corp <Ntt> | 移動通信のチヤネル切替試験方式 |
FR2527872A1 (fr) * | 1982-05-27 | 1983-12-02 | Thomson Csf | Station fixe d'un systeme de radiocommunications a sauts de frequence, a emetteurs banalises |
US4485486A (en) * | 1982-08-03 | 1984-11-27 | Motorola, Inc. | Method and apparatus for assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radio telephones in a cellular radiotelephone communications system |
US4549311A (en) * | 1982-08-03 | 1985-10-22 | Motorola, Inc. | Method and apparatus for measuring the strength of a radio signal frequency |
JPS5958928A (ja) * | 1982-09-28 | 1984-04-04 | Nec Corp | 移動体電話交換方式 |
DE3246741C1 (de) * | 1982-12-17 | 1984-07-05 | Philips Kommunikations Industrie AG, 8500 Nürnberg | Verfahren zum Auswaehlen eines Organisationskanals in einer beweglichen Funkstation eines Funkuebertragungssystems |
DE3278260D1 (en) * | 1982-12-21 | 1988-04-21 | Bbc Brown Boveri & Cie | Broadcasting method for a mobile radio network |
US4475010A (en) * | 1983-05-05 | 1984-10-02 | At&T Bell Laboratories | High density cellular mobile radio communications |
US4556760A (en) * | 1984-06-11 | 1985-12-03 | Itt Corporation | Hand-off filter for cellular mobile radio |
US4608711A (en) * | 1984-06-21 | 1986-08-26 | Itt Corporation | Cellular mobile radio hand-off utilizing voice channel |
JPS617736A (ja) * | 1984-06-22 | 1986-01-14 | Nec Corp | 無線中継方式 |
JPS61502720A (ja) * | 1984-07-13 | 1986-11-20 | モトロ−ラ・インコ−ポレ−テツド | セル音声およびデ−タ無線電話システム |
GB8419003D0 (en) * | 1984-07-25 | 1984-08-30 | Racal Res Ltd | Portable telephones |
JPS6141239A (ja) * | 1984-08-02 | 1986-02-27 | Nec Corp | 通話チヤンネル切替方式 |
JPS61157125A (ja) * | 1984-12-28 | 1986-07-16 | Nec Corp | 移動体電話交換方式 |
JPS61212930A (ja) * | 1985-03-19 | 1986-09-20 | Oki Electric Ind Co Ltd | 広域移動通信システムにおける移動機 |
JPS61251241A (ja) * | 1985-04-29 | 1986-11-08 | Sony Corp | 自動車電話 |
US4682367A (en) * | 1985-11-13 | 1987-07-21 | General Electric Company | Mobile radio communications system with join feature |
FR2594276B1 (fr) * | 1986-02-11 | 1988-11-10 | Const Electro Et | Systeme de radiotelephonie a changement de relais en cours de communication |
US4694484A (en) * | 1986-02-18 | 1987-09-15 | Motorola, Inc. | Cellular radiotelephone land station |
US4696027A (en) * | 1986-08-01 | 1987-09-22 | Motorola, Inc. | Handoff apparatus and method with interference reduction for a radio system |
DE68923102T2 (de) * | 1988-02-10 | 1995-11-02 | Nippon Electric Co | Kommunikationsverfahren und System mit hohem Durchsatz für eine digitale mobile Station beim Überfahren einer Zonengrenze während einer Verbindung. |
-
1988
- 1988-01-29 US US07/150,253 patent/US4811380A/en not_active Expired - Lifetime
- 1988-10-28 CA CA000581608A patent/CA1280466C/en not_active Expired - Lifetime
- 1988-11-07 EP EP88118501A patent/EP0325713B1/en not_active Expired - Lifetime
- 1988-11-07 EP EP98108616A patent/EP0871340B1/en not_active Expired - Lifetime
- 1988-11-07 AT AT88118501T patent/ATE177280T1/de not_active IP Right Cessation
- 1988-11-07 ES ES88118501T patent/ES2131040T3/es not_active Expired - Lifetime
- 1988-11-07 DE DE3856584T patent/DE3856584T2/de not_active Expired - Lifetime
- 1988-11-07 DE DE3856308T patent/DE3856308T2/de not_active Expired - Lifetime
- 1988-11-07 AT AT98108616T patent/ATE306796T1/de not_active IP Right Cessation
- 1988-11-28 FI FI885520A patent/FI100084B/fi not_active IP Right Cessation
-
1989
- 1989-01-27 JP JP1019398A patent/JP2586631B2/ja not_active Expired - Lifetime
-
1999
- 1999-04-10 HK HK99101466A patent/HK1016801A1/xx not_active IP Right Cessation
- 1999-06-01 GR GR990401482T patent/GR3030388T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
GR3030388T3 (en) | 1999-09-30 |
ES2131040T3 (es) | 1999-07-16 |
DE3856584T2 (de) | 2006-05-18 |
JP2586631B2 (ja) | 1997-03-05 |
DE3856584D1 (de) | 2006-02-23 |
EP0871340A2 (en) | 1998-10-14 |
FI885520A0 (fi) | 1988-11-28 |
FI885520A (fi) | 1989-07-30 |
JPH01225236A (ja) | 1989-09-08 |
EP0325713A3 (en) | 1990-09-19 |
EP0871340A3 (en) | 1999-01-07 |
FI100084B (fi) | 1997-09-15 |
US4811380A (en) | 1989-03-07 |
ATE177280T1 (de) | 1999-03-15 |
EP0871340B1 (en) | 2005-10-12 |
CA1280466C (en) | 1991-02-19 |
DE3856308D1 (de) | 1999-04-08 |
EP0325713B1 (en) | 1999-03-03 |
DE3856308T2 (de) | 1999-11-04 |
EP0325713A2 (en) | 1989-08-02 |
ATE306796T1 (de) | 2005-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
HK1016801A1 (en) | Cellular radiotelephone system with dropped call protection | |
AU671249B2 (en) | Method for preventing a dropped call during a handoff in a radiotelephone system | |
DK0593320T3 (da) | Fremgangsmåde til overføring af en information omtidsfremrykning til en mobilenhed, som bevæger sigi et celledelt radiotele | |
AU1281492A (en) | Neighbor-assisted handoff in a cellular communications system | |
CA2025228A1 (en) | Beacon carrier | |
KR920005521A (ko) | 셀 이동 무선 전화 시스템에 있어서 신호의 신뢰성을 향상시키기 위한 방법 및 장치 | |
CA2211925A1 (en) | Downlink transmission power control scheme for mobile communication system using site diversity | |
ATE217138T1 (de) | Verfahren zur regelung der sendeleistung in einem zellularfunksystem und einer teilnehmereinrichtung | |
RU95116588A (ru) | Способ предотвращения потери вызова при перераспределении канала связи в радиотелефонной системе | |
KR920005522A (ko) | 이동 무선 전화기 등록 방법 및 그 제어장치 | |
CA2247190A1 (en) | Coexisting gsm and cdma wireless telecommunications networks | |
NO933254D0 (no) | Fremgangsmaate, kontrollstasjon og kommunikasjonssystem for utveksling av informasjon | |
AP9801211A0 (en) | Distributed circuit switched radio communications network. | |
CA2012818A1 (en) | Drop channel pre-alert for trunked radio communications system | |
EP0893929A3 (en) | Digital mobile communication system | |
CA2119823A1 (en) | Radio telecommunication apparatus | |
AR008498A1 (es) | Procedimiento para el control de la llamada de piezas moviles inalambricas en estaciones base inalambricas de sistemas de telecomunicaciones movilesuniversales, en particular, de piezas moviles dect en estaciones base dect de sistemas de telecomunicaciones especificos de cap | |
JPS6448533A (en) | Mobile communication system monitoring system | |
ATE173126T1 (de) | Funksystem und datenübertragung in einem funksystem | |
JPS5610746A (en) | Information reporting system for mobile communication | |
JPS566548A (en) | Message transmission system for car telephone | |
JPS56100537A (en) | Nonresponse display system of radio communication system | |
JPS6448537A (en) | Overload control system for automobile telephone system | |
TH30382A (th) | ระบบวิทยุ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PE | Patent expired |
Effective date: 20081106 |