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公开(公告)号：ES2299185T3
公开(公告)日：2008-05-16
申请号：ES97929732
申请日：1997-05-23
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSAY A JR , MUNSINGER DAVID B , PADOVANI ROBERTO , ZIV NOAM A , KARMI GADI , GILHOUSEN KLEIN S
Abstract: Un procedimiento para dirigir las comunicaciones entre una unidad (18, 155) remota y una primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base en una red de comunicaciones en la que un usuario (30) de red se comunica a través de la unidad (18, 155) remota con otro usuario a través de al menos una estación base, incluyendo dicha red de comunicaciones un primer centro (212, MSC-I) de conmutación móvil para controlar las comunicaciones a través de un primer conjunto de estaciones base que incluye la primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base que presenta características similares que permiten traspaso continuo intrasistema entre las mismas, y medios para designar una estación base como una estación base de límite en una ubicación que limita con un segundo conjunto de estaciones base que tiene características diferentes a las características del primer conjunto de estaciones base para hacer más complicado el traspaso continuo intersistema entre el primer y el segundo conjunto, comprendiendo el procedimiento: almacenar en dicha unidad (18, 155) remota una lista de estaciones base activas que comprende una entrada correspondiente a cada estación base con la que se establece comunicación activa y en la que dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base presenta una entrada en dicha lista de estaciones base activas; y medir, en dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base, un retardo de ida y vuelta de una primera señal de comunicación activa entre dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base y dicha unidad (18, 155) remota, caracterizado por: iniciar un traspaso de dicha primera señal de comunicación activa a una de dicho segundo conjunto de estaciones base si dicho retardo de ida y vuelta de dicha primera comunicación activa supera un umbral y si dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base está designada como una estación base de límite.
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公开(公告)号：BR9709337A
公开(公告)日：1999-08-10
申请号：BR9709337
申请日：1997-05-22
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSEY A JR , ZIV NOAM A , HOLCMAN TONI L , MUNSINGER DAVID B , BAKER KENNETH R
Abstract: In a communications network, a network user communicates using a remote unit with another user via at least one base station. The network is comprised of first and second mobile switching control stations respectively controlling communications through a first set of base stations including a first base station and through a second set of base stations including a second base station. To direct communications between the remote unit and the first and second base stations the first base station measures a round trip delay of an active communication signal between the first base station and the remote unit. The remote unit measures a first phase offset of a pilot signal received from a first candidate base station and reports it to the first mobile switching center via the first base station. The first mobile switching center calculates a candidate round trip delay between the remote unit and the first candidate base station based on the first phase offset and the round trip delay of the active communication signal. A active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.
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公开(公告)号：DE69738471T2
公开(公告)日：2008-11-13
申请号：DE69738471
申请日：1997-05-23
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSAY A , MUNSINGER DAVID B , PADOVANI ROBERTO , ZIV NOAM A , KARMI GADI , GILHOUSEN KLEIN S
Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.
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公开(公告)号：BR9712089A
公开(公告)日：1999-08-31
申请号：BR9712089
申请日：1997-05-23
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSAY A JR , MUNSINGER DAVID B , PADOVANI ROBERTO , ZIV NOAM A , KARMI GADI , GILHOUSEN KLEIN S
Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.
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公开(公告)号：AT509490T
公开(公告)日：2011-05-15
申请号：AT04016332
申请日：1997-05-23
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSAY , PADOVANI ROBERTO , KARMI GADI , MUNSINGER DAVID B , ZIV NOAM A , GILHOUSEN KLEIN S
Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.
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Patent Agency Ranking
公开(公告)号：DE69738471D1
公开(公告)日：2008-03-06
申请号：DE69738471
申请日：1997-05-23
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSAY A , MUNSINGER DAVID B , PADOVANI ROBERTO , ZIV NOAM A , KARMI GADI , GILHOUSEN KLEIN S
Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.
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公开(公告)号：CZ376698A3
公开(公告)日：1999-10-13
申请号：CZ376698
申请日：1997-05-22
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSAY A JR , HOLCMAN TONI L , MUNSINGER DAVID B , ZIV NOAM A , BAKER KENNETH R
Abstract: In a communications network, a network user communicates using a remote unit with another user via at least one base station. The network is comprised of first and second mobile switching control stations respectively controlling communications through a first set of base stations including a first base station and through a second set of base stations including a second base station. To direct communications between the remote unit and the first and second base stations the first base station measures a round trip delay of an active communication signal between the first base station and the remote unit. The remote unit measures a first phase offset of a pilot signal received from a first candidate base station and reports it to the first mobile switching center via the first base station. The first mobile switching center calculates a candidate round trip delay between the remote unit and the first candidate base station based on the first phase offset and the round trip delay of the active communication signal. A active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.
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公开(公告)号：AU3137797A
公开(公告)日：1997-12-09
申请号：AU3137797
申请日：1997-05-22
Applicant: QUALCOMM INC
Inventor： WEAVER LINDSAY A JR , HOLCMAN TONI L , MUNSINGER DAVID B , ZIV NOAM A , BAKER KENNETH R
Abstract: In a communications network, a network user communicates using a remote unit with another user via at least one base station. The network is comprised of first and second mobile switching control stations respectively controlling communications through a first set of base stations including a first base station and through a second set of base stations including a second base station. To direct communications between the remote unit and the first and second base stations the first base station measures a round trip delay of an active communication signal between the first base station and the remote unit. The remote unit measures a first phase offset of a pilot signal received from a first candidate base station and reports it to the first mobile switching center via the first base station. The first mobile switching center calculates a candidate round trip delay between the remote unit and the first candidate base station based on the first phase offset and the round trip delay of the active communication signal. A active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.
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公开(公告)号：NZ502909A
公开(公告)日：2001-04-27
申请号：NZ50290997
申请日：1997-05-22
Applicant: QUALCOMM INC
Inventor： BAKER KENNETH R , HOLCMAN TONI L , MUNSINGER DAVID B , WEAVER LINDSAY A , ZIV NOAM A
Abstract: Communications between a mobile and first and second base stations in a cellular system are directed by measuring the round trip delay of an active communication signal between the first base station and the mobile and entering a measurement directed hard handoff state by an active communication control unit located in a first mobile switching center of the system. The active communication control unit accesses a measurement directed hard handoff table to determine, on the basis of the measured round trip delay corresponding to the first active communication signal, whether the location of the mobile corresponds to an area where handoff is desirable, that is handoff will most likely not drop the communication in progress.
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公开(公告)号：FI982520A
公开(公告)日：1999-01-22
申请号：FI982520
申请日：1998-11-20
Applicant: QUALCOMM INC
Inventor： WEAWER JR LINSAY A , MUNSINGER DAVID B , PADOVANI ROBERTO , ZIV NOAM A , KARMI GADI , GILHOUSEN KLEIN S
Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.
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