专利名称：FREQUENCY DIVISION MULTIPLEXED
ACKNOWLEDGE BACK PAGING SYSTEM
发明人：SIWIAK, KAZIMIERZ,JASINSKI, LEON,STEEL,
FRANCIS, ROBERT
申请号：EP89901829申请日：19881213公开号：EP0398926A4公开日：19920422
摘要：the paging system to reverse acknowledgement (ack back) (100) includes a hub(110) which transmits a signal group messages to a group of devices.more people backacknowledgement of receipt (121, 122), which are addressed as a group.the users of thegroup of devices to research reverse acknowledgement sent to indicate a response tothe paging devices.thus producing feedback acknowledgement data.the research
facilities, people in the group of units of research people to reverse acknowledgement ofreceipt sent (121, 122,.) then transmits back to the central station (110), and at the sametime, the data of some acknowledgement of receipt of sub bands of different
frequencies.a sub frequency band is assigned to each of the different devices (121, 122,research, etc.) in the group.
申请人：MOTOROLA, INC.
地址：1303 EAST ALGONQUIN ROAD; SCHAUMBURG, IL 60196
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