Invention Application
US20070248048A1 Proportional fair scheduler for OFDMA wireless systems with QOS constraints
有权
具有QOS约束的OFDMA无线系统的比例公平调度器
- Patent Title: Proportional fair scheduler for OFDMA wireless systems with QOS constraints
- Patent Title (中): 具有QOS约束的OFDMA无线系统的比例公平调度器
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Application No.: US11785892Application Date: 2007-04-20
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Publication No.: US20070248048A1Publication Date: 2007-10-25
- Inventor: Chenxi Zhu , Tolga Girici , Jonathan Russell Agre
- Applicant: Chenxi Zhu , Tolga Girici , Jonathan Russell Agre
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Main IPC: H04Q7/00
- IPC: H04Q7/00

Abstract:
Available bandwidth and power for users demanding real time and non-real time data traffic are scheduled, while maximizing proportional fairness for the users over a plurality of time slots, and meeting quality of service constraints for real time data traffic users. The Lagrangian multipliers are used to define a function which includes the proportional fair capacity over the plurality of time slots, and the total power, the total bandwidth, and rate of the real time users' constraints. A maximum of the function is determined for each time slot by binary searching two parameters while observing the total power and total bandwidth. An optimal allocation of the bandwidth and power for the time slot is calculated using the two parameters.
Public/Granted literature
- US07768973B2 Proportional fair scheduler for OFDMA wireless systems with QOS constraints Public/Granted day:2010-08-03
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