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Hybrid access system utilizing credit/done polling protocols

  • US 5,946,322 A
  • Filed: 08/27/1996
  • Issued: 08/31/1999
  • Est. Priority Date: 04/21/1995
  • Status: Expired due to Fees
First Claim
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1. In an asymmetric network communication system including a host server, a plurality of remote clients and a headend facility for distributing information signals to said remote clients, a packet delivery system comprising:

  • a downstream channel shared by said plurality of remote clients for receiving high speed data packets from said host server over a shared medium,an upstream channel shared by said remote clients that enables at least one of said remote clients to transmit lower speed return data packets to said host server,a hybrid access system including a network manager for controlling transfers of data packets from said host server to said remote clients over said shared medium in accordance with a downstream channel protocol and for controlling transfers of lower return data packets from the at least one remote client to said host server over said shared upstream channel in accordance with an upstream channel protocol,said hybrid access system including a backbone interface that enables connection with said host server, a downstream router for enabling transmission of high speed data packets to said remote clients over said shared medium and an upstream router for receiving return data packets from said at least one of said remote clients, andsaid hybrid access system further including a credit manager for issuing credit control packets indicative of respective volumes of data said remote clients are respectively authorized to send, wherein said remote clients respectively return updated messages to said network manager indicative of respective remaining volumes of data to be sent to said host server.

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