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Acknowledge back paging system having the capability of matching variable length data messages to pager addresses

  • US 5,142,279 A
  • Filed: 08/05/1991
  • Issued: 08/25/1992
  • Est. Priority Date: 06/05/1989
  • Status: Expired due to Fees
First Claim
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1. In a radio paging system including a paging terminal for transmitting address and variable length message signals to a plurality of remotely located acknowledge back and non-acknowledge back pagers, each of said pagers having a unique address, a method of radio paging including the steps of:

  • providing said paging terminal with a plurality of variable length messages to be sent to a group of M pagers within said plurality of pagers, wherein M is an integer;

    ordering the addresses for transmission, the order providing for transmitting the addresses for said acknowledge back pagers prior to transmitting the addresses for said non-acknowledge back pagers;

    sequentially transmitting the ordered addresses corresponding to said group of M pagers as an address batch during a first time period;

    said group of M pagers receiving said address batch;

    sequentially transmitting the variable length messages for said group of M pagers in a message batch including end of message markers delimiting an associated variable length message during a second time period subsequent to said first time period, said messages being transmitted in a predetermined order bearing a known relationship to the order in which the addresses of said address batch were transmitted;

    said group of M pagers receiving the variable length messages transmitted in the message batch, andeach pager of said group of M pagers determining the relative position of its address within the group of M addresses which it received;

    each pager in said group of M pagers determining the particular variable length message of said message batch intended for said each pager based on the occurrences of said end of message markers delimiting the associated variable length message and said known relationship between the order of said particular variable length message within said message batch and said relative position of the address of said each pager within said address batch, said each pager thus producing a selected message; and

    displaying the selected message.

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