WO1998019491A2 - Mobile assisted handoff in radiocommunication systems - Google Patents
Mobile assisted handoff in radiocommunication systems Download PDFInfo
- Publication number
- WO1998019491A2 WO1998019491A2 PCT/US1997/016926 US9716926W WO9819491A2 WO 1998019491 A2 WO1998019491 A2 WO 1998019491A2 US 9716926 W US9716926 W US 9716926W WO 9819491 A2 WO9819491 A2 WO 9819491A2
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- WO
- WIPO (PCT)
- Prior art keywords
- digital samples
- processing
- signal
- copy
- communications terminal
- Prior art date
Links
- 238000005259 measurement Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 25
- 238000000605 extraction Methods 0.000 claims description 10
- 230000007480 spreading Effects 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000001413 cellular effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 230000010267 cellular communication Effects 0.000 description 2
- NJLAGDPRCAPJIF-MHSJTTIKSA-N (8S)-1',3',9-trihydroxy-6'-methoxy-3-[(1E,3E)-penta-1,3-dienyl]spiro[6,7-dihydro-2H-cyclopenta[g]isoquinoline-8,2'-cyclopenta[b]naphthalene]-1,4',5',8',9'-pentone Chemical compound COc1cc(=O)c2c(c1=O)c(=O)c1=C(O)[C@]3(CCc4cc5cc(\C=C\C=C\C)[nH]c(=O)c5c(O)c34)C(O)=c1c2=O NJLAGDPRCAPJIF-MHSJTTIKSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- VJYFKVYYMZPMAB-UHFFFAOYSA-N ethoprophos Chemical compound CCCSP(=O)(OCC)SCCC VJYFKVYYMZPMAB-UHFFFAOYSA-N 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 238000010561 standard procedure Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52046398A JP3957006B2 (en) | 1996-10-28 | 1997-09-29 | Mobile station assisted handoff in wireless communication systems |
BR9712579-2A BR9712579A (en) | 1996-10-28 | 1997-09-29 | Communication terminal and process for making signal strength measurements on at least one channel. |
AU44942/97A AU728459C (en) | 1996-10-28 | 1997-09-29 | Mobile assisted handoff in radiocommunication systems |
EEP199900173A EE9900173A (en) | 1996-10-28 | 1997-09-29 | Mobile-controlled handover in radio communication systems |
EP97943477A EP1010345B1 (en) | 1996-10-28 | 1997-09-29 | Mobile assisted handoff (MAHO) in radiocommunications systems |
DE69720292T DE69720292T2 (en) | 1996-10-28 | 1997-09-29 | Mobile assisted handover (MAHO) in a radio transmission system |
HK00104437A HK1025457A1 (en) | 1996-10-28 | 2000-07-19 | Mobile assisted handoff in radio communication systems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/740,306 US6473602B1 (en) | 1996-10-28 | 1996-10-28 | Mobile assisted handoff in radiocommunication systems |
US08/740,306 | 1996-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998019491A2 true WO1998019491A2 (en) | 1998-05-07 |
WO1998019491A3 WO1998019491A3 (en) | 1998-06-25 |
Family
ID=24975941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/016926 WO1998019491A2 (en) | 1996-10-28 | 1997-09-29 | Mobile assisted handoff in radiocommunication systems |
Country Status (11)
Country | Link |
---|---|
US (1) | US6473602B1 (en) |
EP (1) | EP1010345B1 (en) |
JP (1) | JP3957006B2 (en) |
KR (1) | KR100503584B1 (en) |
CN (1) | CN1122433C (en) |
AU (1) | AU728459C (en) |
BR (1) | BR9712579A (en) |
DE (1) | DE69720292T2 (en) |
EE (1) | EE9900173A (en) |
HK (1) | HK1025457A1 (en) |
WO (1) | WO1998019491A2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1119116A1 (en) * | 1999-08-18 | 2001-07-25 | Matsushita Electric Industrial Co., Ltd. | Mobile communication terminal and method of detecting received signal strength |
WO2003028233A1 (en) * | 2001-09-27 | 2003-04-03 | Qualcomm, Incorporated | Communication system receiver and method for concurrent receiving of multiple channels |
US6591100B1 (en) * | 1998-11-19 | 2003-07-08 | Ericsson Inc. | Cellular communication device with scanning receiver and continuous mobile communication system employing same |
JP2011142656A (en) * | 1998-05-07 | 2011-07-21 | Qualcomm Inc | Method and apparatus for coordinating transmission of short message with hard handoff search in wireless communication system |
US8170558B2 (en) | 1998-02-13 | 2012-05-01 | Qualcomm Incorporated | Method and system for performing a handoff in a wireless communication system, such as a hard handoff |
RU2474045C2 (en) * | 2008-06-23 | 2013-01-27 | Квэлкомм Инкорпорейтед | Methods and systems for background scanning in ofdma mobile stations |
US8964692B2 (en) | 2008-11-10 | 2015-02-24 | Qualcomm Incorporated | Spectrum sensing of bluetooth using a sequence of energy detection measurements |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6760342B1 (en) * | 2000-06-28 | 2004-07-06 | Northrop Grumman Corporation | Channelizer for a multi-carrier receiver |
US6898432B1 (en) * | 2000-11-21 | 2005-05-24 | Daimlerchrysler Research And Technology North America, Inc. | Route-based communication planning architecture and method for wireless communication |
US6982949B2 (en) * | 2003-02-28 | 2006-01-03 | Microsoft Corporation | Vertical roaming in wireless networks through improved wireless network cell boundary detection |
US6944144B2 (en) | 2003-02-28 | 2005-09-13 | Microsoft Corporation | Vertical roaming in wireless networks through improved quality of service measures |
FR2858728B1 (en) * | 2003-08-08 | 2005-10-14 | Wavecom | METHOD OF FILTERING A USEFUL RADIOCOMMUNICATION SIGNAL USING DIGITAL POWER ESTIMATION AND CORRESPONDING RADIO COMMUNICATION DEVICE |
US20050070287A1 (en) * | 2003-09-26 | 2005-03-31 | Interdigital Technology Corporation | Method for soft/softer handover for wireless communication systems |
US7620029B2 (en) * | 2003-10-09 | 2009-11-17 | Qualcomm Incorporated | Parallel cell ID acquisition in frequency division multiple access systems |
US7321749B2 (en) * | 2003-10-09 | 2008-01-22 | Qualcomm Incorporated | Cell selection techniques for frequency division multiple access systems |
US20050201490A1 (en) * | 2004-02-20 | 2005-09-15 | Tobias Scholand | Zero-crossing detector for receivers |
JP4455354B2 (en) * | 2005-01-26 | 2010-04-21 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication system |
KR100842500B1 (en) | 2005-06-29 | 2008-07-01 | 삼성전자주식회사 | System and method for transmitting and receiving signal in a frequency overlay communication system |
CN101119579B (en) * | 2006-07-31 | 2010-09-22 | 华为技术有限公司 | Hard handoff measurement control method and system |
Citations (6)
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FR2594276A1 (en) * | 1986-02-11 | 1987-08-14 | Const Electro Et | RELAY CHANGE RADIOTELEPHONE SYSTEM DURING COMMUNICATION |
EP0377509A2 (en) * | 1989-01-05 | 1990-07-11 | Hughes Aircraft Company | Efficient digital frequency division multiplexed signal receiver |
WO1991007020A1 (en) * | 1989-11-07 | 1991-05-16 | Qualcomm Incorporated | Soft handoff in a cdma cellular telephone system |
GB2240696A (en) * | 1990-01-31 | 1991-08-07 | Nec Corp | Method of controlling handoff in cellular mobile radio communications systems |
EP0595781A2 (en) * | 1992-10-27 | 1994-05-04 | Ericsson Inc. | Multi-mode signal processing |
WO1996013955A1 (en) * | 1994-10-31 | 1996-05-09 | Airnet Communications Corporation | Cellular telephone system maintaining channel frequency at hand-off |
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US4608711A (en) | 1984-06-21 | 1986-08-26 | Itt Corporation | Cellular mobile radio hand-off utilizing voice channel |
DE3513361A1 (en) | 1985-04-15 | 1986-10-16 | Philips Patentverwaltung Gmbh, 2000 Hamburg | METHOD AND CIRCUIT FOR THE QUALITY MEASUREMENT OF RADIO TRANSMISSION CHANNELS OF A RADIO TRANSMISSION SYSTEM |
FR2584884B1 (en) | 1985-07-09 | 1987-10-09 | Trt Telecom Radio Electr | FREE CHANNEL SEARCHING METHOD AND DEVICE FOR A MOBILE RADIO SYSTEM |
US4736453A (en) | 1985-12-10 | 1988-04-05 | Schloemer Gerald R | Method and apparatus for making frequency channel assignment in a cellular or non-cellular radiotelephone communications system |
DE3607687A1 (en) | 1986-03-08 | 1987-09-10 | Philips Patentverwaltung | METHOD AND CIRCUIT ARRANGEMENT FOR SWITCHING A RADIO CONNECTION INTO ANOTHER RADIO CELL OF A DIGITAL RADIO TRANSMISSION SYSTEM |
US4696027A (en) | 1986-08-01 | 1987-09-22 | Motorola, Inc. | Handoff apparatus and method with interference reduction for a radio system |
JPS6379888A (en) | 1986-09-24 | 1988-04-09 | Tanabe Seiyaku Co Ltd | Stable hydrate of penicillin derivative |
US4794635A (en) | 1986-11-28 | 1988-12-27 | Motorola, Inc. | Two-way radio communication system with max-minimum call assignment method |
CA1309519C (en) | 1987-03-17 | 1992-10-27 | Antonio Cantoni | Transfer of messages in a multiplexed system |
US4811380A (en) | 1988-01-29 | 1989-03-07 | Motorola, Inc. | Cellular radiotelephone system with dropped call protection |
US5042082A (en) | 1989-06-26 | 1991-08-20 | Telefonaktiebolaget L. M. Ericsson | Mobile assisted handoff |
US5220562A (en) | 1989-05-12 | 1993-06-15 | Hitachi, Ltd. | Bridge apparatus and a communication system between networks using the bridge apparatus |
GB2236454A (en) | 1989-09-01 | 1991-04-03 | Philips Electronic Associated | Communications system for radio telephones |
JP2854346B2 (en) | 1989-09-19 | 1999-02-03 | 日本電信電話株式会社 | Channel assignment method |
US4977612A (en) | 1989-10-10 | 1990-12-11 | Motorola, Inc. | Channel selection in a multi-frequency radio data communication system |
SE465004B (en) | 1989-12-18 | 1991-07-08 | Televerket | METHOD FOR DETERMINING MULTIPLE INTERFERENCES IN A MOBILE RADIO SYSTEM |
CA2032325C (en) | 1990-12-14 | 1998-07-07 | Leo Strawczynski | Intra-cell call hand-over in radio communication systems with dynamic channel allocation |
US5175867A (en) | 1991-03-15 | 1992-12-29 | Telefonaktiebolaget L M Ericsson | Neighbor-assisted handoff in a cellular communications system |
US5367539A (en) * | 1991-12-31 | 1994-11-22 | At&T Bell Laboratories | Digital block processor for processing a plurality of transmission channels in a wireless radiotelephony system |
US5267261A (en) * | 1992-03-05 | 1993-11-30 | Qualcomm Incorporated | Mobile station assisted soft handoff in a CDMA cellular communications system |
US5216692A (en) * | 1992-03-31 | 1993-06-01 | Motorola, Inc. | Method and apparatus for adjusting a power control threshold in a communication system |
US5345598A (en) * | 1992-04-10 | 1994-09-06 | Ericsson-Ge Mobile Communications Holding, Inc. | Duplex power control system in a communication network |
US5260943A (en) | 1992-06-16 | 1993-11-09 | Motorola, Inc. | TDM hand-off technique using time differences |
JP3095305B2 (en) * | 1993-01-28 | 2000-10-03 | 株式会社エヌ・ティ・ティ・ドコモ | Receive level measurement circuit |
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-
1996
- 1996-10-28 US US08/740,306 patent/US6473602B1/en not_active Expired - Lifetime
-
1997
- 1997-09-29 KR KR10-1999-7003701A patent/KR100503584B1/en not_active IP Right Cessation
- 1997-09-29 JP JP52046398A patent/JP3957006B2/en not_active Expired - Lifetime
- 1997-09-29 EE EEP199900173A patent/EE9900173A/en unknown
- 1997-09-29 BR BR9712579-2A patent/BR9712579A/en not_active Application Discontinuation
- 1997-09-29 CN CN97181009A patent/CN1122433C/en not_active Expired - Lifetime
- 1997-09-29 DE DE69720292T patent/DE69720292T2/en not_active Expired - Lifetime
- 1997-09-29 AU AU44942/97A patent/AU728459C/en not_active Expired
- 1997-09-29 EP EP97943477A patent/EP1010345B1/en not_active Expired - Lifetime
- 1997-09-29 WO PCT/US1997/016926 patent/WO1998019491A2/en active IP Right Grant
-
2000
- 2000-07-19 HK HK00104437A patent/HK1025457A1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2594276A1 (en) * | 1986-02-11 | 1987-08-14 | Const Electro Et | RELAY CHANGE RADIOTELEPHONE SYSTEM DURING COMMUNICATION |
EP0377509A2 (en) * | 1989-01-05 | 1990-07-11 | Hughes Aircraft Company | Efficient digital frequency division multiplexed signal receiver |
WO1991007020A1 (en) * | 1989-11-07 | 1991-05-16 | Qualcomm Incorporated | Soft handoff in a cdma cellular telephone system |
GB2240696A (en) * | 1990-01-31 | 1991-08-07 | Nec Corp | Method of controlling handoff in cellular mobile radio communications systems |
EP0595781A2 (en) * | 1992-10-27 | 1994-05-04 | Ericsson Inc. | Multi-mode signal processing |
WO1996013955A1 (en) * | 1994-10-31 | 1996-05-09 | Airnet Communications Corporation | Cellular telephone system maintaining channel frequency at hand-off |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8170558B2 (en) | 1998-02-13 | 2012-05-01 | Qualcomm Incorporated | Method and system for performing a handoff in a wireless communication system, such as a hard handoff |
JP2011142656A (en) * | 1998-05-07 | 2011-07-21 | Qualcomm Inc | Method and apparatus for coordinating transmission of short message with hard handoff search in wireless communication system |
JP2012235479A (en) * | 1998-05-07 | 2012-11-29 | Qualcomm Inc | Method and apparatus for coordinating transmission of short messages with hard handoff searches in wireless communications system |
US6591100B1 (en) * | 1998-11-19 | 2003-07-08 | Ericsson Inc. | Cellular communication device with scanning receiver and continuous mobile communication system employing same |
US7050802B2 (en) * | 1998-11-19 | 2006-05-23 | Ericsson Inc. | Cellular communication device with scanning receiver and continuous mobile communication system employing same |
US6725041B1 (en) | 1999-08-18 | 2004-04-20 | Matsushita Electric Industrial Co., Ltd. | Mobile communication terminal apparatus and received signal strength detecting method |
EP1119116A1 (en) * | 1999-08-18 | 2001-07-25 | Matsushita Electric Industrial Co., Ltd. | Mobile communication terminal and method of detecting received signal strength |
EP1119116A4 (en) * | 1999-08-18 | 2003-04-02 | Matsushita Electric Ind Co Ltd | Mobile communication terminal and method of detecting received signal strength |
KR100882034B1 (en) * | 2001-09-27 | 2009-02-09 | 콸콤 인코포레이티드 | Communication system receiver and method for concurrent receiving of multiple channels |
US7706795B2 (en) | 2001-09-27 | 2010-04-27 | Qualcomm Incorporated | Communication system receiver and method for concurrent receiving of multiple channels |
US7729698B2 (en) | 2001-09-27 | 2010-06-01 | Qualcomm Incorporated | Communication system receiver and method for concurrent receiving of multiple channels |
WO2003028233A1 (en) * | 2001-09-27 | 2003-04-03 | Qualcomm, Incorporated | Communication system receiver and method for concurrent receiving of multiple channels |
RU2474045C2 (en) * | 2008-06-23 | 2013-01-27 | Квэлкомм Инкорпорейтед | Methods and systems for background scanning in ofdma mobile stations |
US8964692B2 (en) | 2008-11-10 | 2015-02-24 | Qualcomm Incorporated | Spectrum sensing of bluetooth using a sequence of energy detection measurements |
Also Published As
Publication number | Publication date |
---|---|
KR100503584B1 (en) | 2005-07-26 |
JP3957006B2 (en) | 2007-08-08 |
BR9712579A (en) | 1999-10-19 |
CN1242131A (en) | 2000-01-19 |
WO1998019491A3 (en) | 1998-06-25 |
AU728459B2 (en) | 2001-01-11 |
KR20000052863A (en) | 2000-08-25 |
AU4494297A (en) | 1998-05-22 |
DE69720292T2 (en) | 2003-10-09 |
DE69720292D1 (en) | 2003-04-30 |
CN1122433C (en) | 2003-09-24 |
HK1025457A1 (en) | 2000-11-10 |
AU728459C (en) | 2001-08-23 |
EE9900173A (en) | 1999-12-15 |
JP2001503229A (en) | 2001-03-06 |
EP1010345B1 (en) | 2003-03-26 |
US6473602B1 (en) | 2002-10-29 |
EP1010345A2 (en) | 2000-06-21 |
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