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Quality of service (QoS) scheduling for packet switched, in particular GPRS/EGPRS, data services

  • US 20040042460A1
  • Filed: 06/23/2003
  • Published: 03/04/2004
  • Est. Priority Date: 06/24/2002
  • Status: Abandoned Application
First Claim
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1. A method for improving in a multi-layer packet switching network or system quality of service (QoS) scheduling having a rate-conserving scheduling functionality based on two scheduling layers operating on two granularities in protocol data units (PDU) of at least one incoming data flow, the method comprising the steps of:

  • maintaining QoS requirements and determining a service order for the protocol data units by an upper scheduling layer, implementing packet switching based on constraints by a lower scheduler layer, selecting service ordered protocol data units on demand by the lower scheduling layer in dependence on these constraints for efficiently allocating timeslots for the data flows, and serving the selected protocol data units by the lower scheduling layer.

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