Method and apparatus for scheduling packet data transmissions in a wireless communication system
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United States of America Patent
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Jan 25, 2005
Grant Date -
Jul 18, 2002
app pub date -
Nov 30, 2000
filing date -
Nov 30, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method (18) for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) (24) is based on a channel condition indicated by a Rate Request Indicator (RRI). The method also considers fairness criteria dictated by predetermined Quality of Service (QOS) requirements. In one embodiment, the rate request indicator is a Data Rate Request (DRR). In another embodiment, the rate request indicator is Carrier-to-Interference (C/I) information. In the exemplary embodiment, the base station calculates a Priority Function (PF) for the multiple mobile users. Each PF is a function of the rate request indicator and the projected throughput of a given mobile user. The PF values allow the base station to schedule active mobile units having pending data. The scheduling produces an approximately equal share of the allocated transmission time to the multiple mobile stations.
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