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公开(公告)号：FR2738428A1
公开(公告)日：1997-03-07
申请号：FR9610368
申请日：1996-08-22
Applicant: MOTOROLA INC
Inventor： SMITH PAUL FIELDING , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHELIA MARIE , PINCKLEY DANNY THOMAS , LUZ YUDA YEHUDA , LUREY DANIEL MORRIS , LAIRD KEVIN M , KOBRINETZ TONY , ELDER ROBERT C
IPC: H03D7/00 , H01Q1/24 , H01Q3/26 , H03B28/00 , H03C1/00 , H03C3/00 , H03D7/16 , H04B1/04 , H04B1/16 , H04B1/26 , H04B1/28 , H04B1/38 , H04B1/40 , H04B7/04 , H04B7/06 , H04B7/08 , H04B7/185 , H04B7/24 , H04L1/06 , H04L1/22 , H04L27/20 , H04W4/18 , H04W88/06 , H04Q7/20
Abstract: A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).
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公开(公告)号：AT462237T
公开(公告)日：2010-04-15
申请号：AT03724400
申请日：2003-05-05
Applicant: MOTOROLA INC
Inventor： AHMED MANSOOR , ROHANI KAMYAR , LAIRD KEVIN M
Abstract: A method 600 of selecting an ARQ method for retransmitting a data frame based on an accumulated signal to noise ratio (SNR) of systematic bits in the data frame at a receiving unit 508. The sending unit 500 tracks the accumulated SNR of systematic bits by using channel SNR measurement reports sent by the receiving unit 508. The method utilizes Chase combining of re-transmitted systematic bits (via Partial incremental redundancy transmissions) until the accumulated SNR of the systematic bits has reached a suitable value, and then switches to sending only parity bits (via Full incremental redundancy) in retransmissions. In addition, the method alters the allocation of resources, such as code power, to provide only that necessary for successful decoding of the transmitted frame. The sending unit 500 informs the receiving unit 508 of the type of transmission, number of the transmission and/or resource allocation associated with the data frame.
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公开(公告)号：DE60138701D1
公开(公告)日：2009-06-25
申请号：DE60138701
申请日：2001-05-30
Applicant: MOTOROLA INC
Inventor： HARRISON ROBERT M , LAIRD KEVIN M , MYARA DAVID , BULJORE SOODESH
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公开(公告)号：AU2003231263A1
公开(公告)日：2003-12-19
申请号：AU2003231263
申请日：2003-05-05
Applicant: MOTOROLA INC
Inventor： ROHANI KAMYAR , LAIRD KEVIN M , AHMED MANSOOR
Abstract: A method 600 of selecting an ARQ method for retransmitting a data frame based on an accumulated signal to noise ratio (SNR) of systematic bits in the data frame at a receiving unit 508. The sending unit 500 tracks the accumulated SNR of systematic bits by using channel SNR measurement reports sent by the receiving unit 508. The method utilizes Chase combining of re-transmitted systematic bits (via Partial incremental redundancy transmissions) until the accumulated SNR of the systematic bits has reached a suitable value, and then switches to sending only parity bits (via Full incremental redundancy) in retransmissions. In addition, the method alters the allocation of resources, such as code power, to provide only that necessary for successful decoding of the transmitted frame. The sending unit 500 informs the receiving unit 508 of the type of transmission, number of the transmission and/or resource allocation associated with the data frame.
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公开(公告)号：BR9405976A
公开(公告)日：1996-01-09
申请号：BR9405976
申请日：1994-09-29
Applicant: MOTOROLA INC
Inventor： BATTIN JOHN W , LYNK CHARLES N JR , LAIRD KEVIN M
Abstract: A digital radiotelephone system employs vocoders to convert between analog speech and a digital format suitable for transmission via radio. Under most circumstances, the highest data rate is selected for optimum audio quality. When the system occupancy exceeds a particular threshold, as detected at the fixed site of the system, some or all of the vocoders are instructed to switch to a lower data rate to provide for an increase in the number of communication channels. Further, a portable subscriber unit may autonomously change its vocoder data rate depending upon the charge state of its battery.
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Patent Agency Ranking
公开(公告)号：FI953184A
公开(公告)日：1995-06-27
申请号：FI953184
申请日：1995-06-27
Applicant: MOTOROLA INC
Inventor： BATTIN JOHN W , LYNK JR CHARLES N , LAIRD KEVIN M
Abstract: A digital radiotelephone system employs vocoders to convert between analog speech and a digital format suitable for transmission via radio. Under most circumstances, the highest data rate is selected for optimum audio quality. When the system occupancy exceeds a particular threshold, as detected at the fixed site of the system, some or all of the vocoders are instructed to switch to a lower data rate to provide for an increase in the number of communication channels. Further, a portable subscriber unit may autonomously change its vocoder data rate depending upon the charge state of its battery.
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公开(公告)号：DK0596894T3
公开(公告)日：1999-12-06
申请号：DK92911983
申请日：1992-03-27
Applicant: MOTOROLA INC
Inventor： BARRETT STEVEN T , LAIRD KEVIN M , MURRAY RICHARD E , O'CONNOR JAMES M
Abstract: A radio (100) transmits and receives encrypted signals having unencrypted key identifiers, allowing other radios having the corresponding key identifiers and encryption keys to communicate with radio (100). Prior to transmitting an encrypted message, radio (100) selects a unique key identifier automatically and uses the corresponding encryption key to encrypt the message that will be transmitted. Radio (100) transmits the key identifier in an unencrypted format with the encrypted message in order to allow other radios to determine the encryption key used in encrypting the message. When receiving an encrypted message, radio (100) uses the predetermined process stored in the radio (100) to properly select the proper encryption key for use in decrypting the incoming message.
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公开(公告)号：ES2134807T3
公开(公告)日：1999-10-16
申请号：ES92911983
申请日：1992-03-27
Applicant: MOTOROLA INC
Inventor： BARRETT STEVEN T , LAIRD KEVIN M , MURRAY RICHARD E , O'CONNOR JAMES M
Abstract: A radio (100) transmits and receives encrypted signals having unencrypted key identifiers, allowing other radios having the corresponding key identifiers and encryption keys to communicate with radio (100). Prior to transmitting an encrypted message, radio (100) selects a unique key identifier automatically and uses the corresponding encryption key to encrypt the message that will be transmitted. Radio (100) transmits the key identifier in an unencrypted format with the encrypted message in order to allow other radios to determine the encryption key used in encrypting the message. When receiving an encrypted message, radio (100) uses the predetermined process stored in the radio (100) to properly select the proper encryption key for use in decrypting the incoming message.
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公开(公告)号：AR001338A1
公开(公告)日：1997-10-22
申请号：AR33488496
申请日：1996-01-02
Applicant: MOTOROLA INC
Inventor： SMITH PAUL F , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHEILA Y , LUREY DANIEL MORRIS , LAIRD KEVIN M , KOBRINETZ TONY , ELDER ROBERT C , BAYLEY DONALD
Abstract: Un aparato para recibir comunicaciones de radio frecuencia que comprende: una pluralidad de antenas para recibir senales de radio frecuencia; medios paraconvertir las senales de radio frecuencia a senales de frecuencia intermedia; medios para convertir hacia abajo digitalmente una de las senales digitales auna senal de banda base de frecuencia intermedia, que incluyen medios para seleccionar una de las senalesdigitales; y medios para procesar la senal de banda basede frecuencia intermedia para recuperar uno de una pluralidad de canales de comunicacionesallí contenidos. El convertidor hacia abajo comprende una pluralidad de convertidores hacia abajo conmutados digitales, cada uno de una pluralidad deconvertidores hacia abajo conmutados digitales siendo acoplados a medios para convertir las senales de frecuencia intermedia a senales digitales y a losmedios para procesar la senal de banda base de frecuencia intermedia.
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公开(公告)号：SE9603102L
公开(公告)日：1996-10-29
申请号：SE9603102
申请日：1996-08-28
Applicant: MOTOROLA INC
Inventor： SMITH PAUL F , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHELIA M , PINCKLEY DANNY T , LUZ YUDA Y , LUREY DANIEL M , LAIRD KEVIN M , KOBRINETZ TONY , ELDER ROBERT C , BAILEY DONALD E
IPC: H03D7/00 , H01Q1/24 , H01Q3/26 , H03B28/00 , H03C1/00 , H03C3/00 , H03D7/16 , H04B1/04 , H04B1/16 , H04B1/26 , H04B1/28 , H04B1/38 , H04B1/40 , H04B7/04 , H04B7/06 , H04B7/08 , H04B7/185 , H04B7/24 , H04L1/06 , H04L1/22 , H04L27/20 , H04W4/18 , H04W88/06 , H04B7/204
Abstract: A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).
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