Communications in a distribution network

DC
  • US 5,761,197 A
  • Filed: 11/14/1994
  • Issued: 06/02/1998
  • Est. Priority Date: 11/14/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of communicating information in TDM frames in a downstream direction from a central station of a distribution network to a plurality of terminals of the network and in TDMA frames in an upstream direction from the plurality of terminals to the central station, each terminal having a respective terminal identity, comprising the steps of:

  • transmitting in the downstream frames distribution information and overhead information, the overhead information comprising synchronization information for synchronizing the plurality of terminals to the upstream frames and authorization information for authorizing selected terminals each to transmit in an upstream frame, the authorization information comprising the terminal identity of each terminal authorized to transmit in an upstream frame and an indication identifying a time slot in the upstream frame in which each terminal is authorized to transmit, said indication being constituted by a relative position of the terminal identity in the downstream frame; and

    in each terminal, storing the respective terminal identity and transmitting information in a respective time slot in an upstream frame in response to the authorization information comprising the respective terminal identity stored in the terminal.

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