Invention Grant
- Patent Title: Proportional fair scheduler for OFDMA wireless systems
- Patent Title (中): OFDMA无线系统的比例公平调度器
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Application No.: US11785893Application Date: 2007-04-20
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Publication No.: US07924698B2Publication Date: 2011-04-12
- Inventor: Chenxi Zhu , Jonathan Russell Agre
- Applicant: Chenxi Zhu , Jonathan Russell Agre
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Main IPC: H04B7/212
- IPC: H04B7/212

Abstract:
A scheduler and a method schedule available power and bandwidth to users. Equations for a continuous bandwidth allocation of a total bandwidth, and/or a continuous power distribution of a total power, are set up using Lagrangian multipliers to include constraints in a function that is maximum when a fair capacity is maximum. The continuous bandwidth allocation and/or the continuous power distribution represent sets of values corresponding to users that maximize the function. The equations are solved using waterfilling methods, wherein the continuous power distribution is determined for a previously determined bandwidth allocation, and/or the continuous bandwidth allocation is calculated for a previously determined power distribution.
Public/Granted literature
- US20070248178A1 Proportional fair scheduler for OFDMA wireless systems Public/Granted day:2007-10-25
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