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Full duplex resource allocation in cable network environment

  • US 10,230,519 B2
  • Filed: 04/10/2017
  • Issued: 03/12/2019
  • Est. Priority Date: 04/10/2017
  • Status: Active Grant
First Claim
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1. An apparatus in a cable network, comprising:

  • a processor;

    a memory element; and

    a media access control (MAC) scheduler, wherein the MAC scheduler is configured to;

    implement a transmission-reception (T-R) coordination scheme among a plurality of cable modems in the cable network, wherein according to the T-R coordination scheme, the cable modems are categorized into interference groups, wherein no cable modem of any one interference group transmits upstream in a frequency range simultaneously as another cable modem in the same interference group receives downstream in the frequency range, facilitating full duplex communication in the cable network across the frequency range;

    assign one or more of the interference groups to at least one transmission group based upon predetermined criteria; and

    determine an upstream bandwidth constraint and downstream bandwidth constraint for the at least one transmission group, wherein the upstream bandwidth constraint and downstream bandwidth constraint is implemented by proportionally modifying an allocated upstream bandwidth and an allocated downstream bandwidth for the at least one transmission group to require that the sum of the allocated upstream bandwidth and allocated downstream bandwidth does not exceed a spectrum capacity for the at least one transmission group, wherein the upstream bandwidth constraint comprises an upstream upper bound that is a function of a total bandwidth capacity of an upstream direction, the allocated downstream bandwidth for the at least one transmission group, and a ratio of a spectrum efficiency of the upstream direction and a spectrum efficiency of a downstream direction and wherein the downstream bandwidth constraint comprises a downstream upper bound that is a function of a total bandwidth capacity of a downstream direction, the allocated upstream bandwidth for the at least one transmission group, and a ratio of the spectrum efficiency of the downstream direction and the spectrum efficiency of the upstream direction.

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