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    1.
    发明专利
    未知

    公开(公告)号：DE69330236T2

    公开(公告)日：2001-10-11

    申请号：DE69330236

    申请日：1993-03-04

    Applicant: IBM

    Inventor： BRIGIDA DAVID JOSEPH ,  MOORE VICTOR STUART ,  PATE THOMAS KENT

    IPC: G06F13/00 ,  H04L27/00 ,  H04L29/06 ,  H04L29/08 ,  H04M11/06 ,  H04L12/06

    Abstract: A method and system are disclosed for permitting selected command sequences to be processed by a modem during data transfer operations. A preselected escape character is designated and inserted into a data stream to be applied to a modem in order to identify a selected command sequence which follows. A termination character is inserted into the data stream following the selected command sequence. Upon detection of the preselected escape character, the selected command sequence is coupled to a command processor within the modem and processed. In applications in which the modem is coupled between a data processing system and a cellular telephone communication channel, the selected command sequence may be utilized to transmit communication channel parameter status queries to a cellular telephone associated with the modem. In this manner, the Received Signal Strength Indicator (RSSI), bit error rate, or other indications of communication channel status may be queried. An identical technique may be utilized to transmit a response to each such query to the data processing system, permitting real time display of cellular communication channel status information during data transfer.

    METHOD AND SYSTEM FOR MODEM COMMAND PROCESSING DURING DATA TRANSFER
    2.
    发明专利
    METHOD AND SYSTEM FOR MODEM COMMAND PROCESSING DURING DATA TRANSFER 未知

    公开(公告)号：CA2087507C

    公开(公告)日：1997-05-13

    申请号：CA2087507

    申请日：1993-01-18

    Applicant: IBM

    Inventor： BRIGIDA DAVID JOSEPH ,  MOORE VICTOR STUART ,  PATE THOMAS KENT

    IPC: G06F13/00 ,  H04L27/00 ,  H04L29/06 ,  H04L29/08 ,  H04M11/06 ,  H04B17/02

    Abstract: A method and system are disclosed for permitting selected command sequences to be processed by a modem during data transfer operations. A preselected escape character is designated and inserted into a data stream to be applied to a modem in order to identify a selected command sequence which follows. A termination character is inserted into the data stream following the selected command sequence. Upon detection of the preselected escape character, the selected command sequence is coupled to a command processor within the modem and processed. In applications in which the modem is coupled between a data processing system and a cellular telephone communication channel, the selected command sequence may be utilized to transmit communication channel parameter status queries to a cellular telephone associated with the modem. In this manner, the Received Signal Strength Indicator (RSSI), bit error rate, or other indications of communication channel status may be queried. An identical technique may be utilized to transmit a response to each such query to the data processing system, permitting real time display of cellular communication channel status information during data transfer.

    3.
    发明专利
    未知

    公开(公告)号：DE69330236D1

    公开(公告)日：2001-06-28

    申请号：DE69330236

    申请日：1993-03-04

    Applicant: IBM

    Inventor： BRIGIDA DAVID JOSEPH ,  MOORE VICTOR STUART ,  PATE THOMAS KENT

    IPC: G06F13/00 ,  H04L27/00 ,  H04L29/06 ,  H04L29/08 ,  H04M11/06 ,  H04L12/06

    Abstract: A method and system are disclosed for permitting selected command sequences to be processed by a modem during data transfer operations. A preselected escape character is designated and inserted into a data stream to be applied to a modem in order to identify a selected command sequence which follows. A termination character is inserted into the data stream following the selected command sequence. Upon detection of the preselected escape character, the selected command sequence is coupled to a command processor within the modem and processed. In applications in which the modem is coupled between a data processing system and a cellular telephone communication channel, the selected command sequence may be utilized to transmit communication channel parameter status queries to a cellular telephone associated with the modem. In this manner, the Received Signal Strength Indicator (RSSI), bit error rate, or other indications of communication channel status may be queried. An identical technique may be utilized to transmit a response to each such query to the data processing system, permitting real time display of cellular communication channel status information during data transfer.

    8.
    发明专利
    未知

    公开(公告)号：DE69221677T2

    公开(公告)日：1998-02-12

    申请号：DE69221677

    申请日：1992-05-26

    Applicant: IBM

    Inventor： MILLER ROBERT VICTOR ,  MOORE VICTOR STUART ,  PATE THOMAS KENT

    IPC: H04W16/04 ,  H04W16/14 ,  H04W72/00 ,  H04W76/04 ,  H04W92/02 ,  H04Q7/20

    Abstract: According to one aspect of the invention, methods and apparatus are provided for performing Cellular Data Networking (CDN), i. e., identifying, collecting and utilizing otherwise unused or unusable air time, in an existing Advanced Mobile Telephone System (AMPS). According to another aspect of the invention, a Digital Cellular Overlay Network (DCON) is provided for performing CDN utilizing an underlying AMPS, where the DCON is transparent, with respect to the AMPS, and takes full advantage of existing AMPS equipment to keep the cost of performing CDN to a minimum. The resulting digital network may be used for high speed non-interfering data communications, i.e., data communications that do not degrade the underlying system's capacity and capability (qualitatively) to handle voice traffic. The invention also is directed to methods and apparatus which contemplate the expanded use of well known radio control signals, in particular "busy bits" and "dotting sequences", to provide a DCON capable of performing CDN that in both a reliable and flexible manner.

    9.
    发明专利
    未知

    公开(公告)号：DE69221677D1

    公开(公告)日：1997-09-25

    申请号：DE69221677

    申请日：1992-05-26

    Applicant: IBM

    Inventor： MILLER ROBERT VICTOR ,  MOORE VICTOR STUART ,  PATE THOMAS KENT

    IPC: H04W16/04 ,  H04W16/14 ,  H04W72/00 ,  H04W76/04 ,  H04W92/02 ,  H04Q7/20

    Abstract: According to one aspect of the invention, methods and apparatus are provided for performing Cellular Data Networking (CDN), i. e., identifying, collecting and utilizing otherwise unused or unusable air time, in an existing Advanced Mobile Telephone System (AMPS). According to another aspect of the invention, a Digital Cellular Overlay Network (DCON) is provided for performing CDN utilizing an underlying AMPS, where the DCON is transparent, with respect to the AMPS, and takes full advantage of existing AMPS equipment to keep the cost of performing CDN to a minimum. The resulting digital network may be used for high speed non-interfering data communications, i.e., data communications that do not degrade the underlying system's capacity and capability (qualitatively) to handle voice traffic. The invention also is directed to methods and apparatus which contemplate the expanded use of well known radio control signals, in particular "busy bits" and "dotting sequences", to provide a DCON capable of performing CDN that in both a reliable and flexible manner.

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