Enhanced Bandwidth Allocation Using the Statistics of Arrival (EBACSOA): A Scheduling Algorithm for WiMAX Network

2015 ◽  
Vol E98.B (8) ◽  
pp. 1553-1560
Author(s):  
Hann-Tzong CHERN ◽  
Chun-Chieh LEE ◽  
Jhih-Syue JHOU
Keyword(s):  
Bandwidth Allocation ◽  
Scheduling Algorithm ◽  
Wimax Network

The Design of the Power Saving Mechanisms for IEEE 802.16e Networks

2012 ◽  
Vol 433-440 ◽  
pp. 5068-5072
Author(s):  
Lei Yan ◽  
Ho Ting Wu ◽  
Kai Wei Ke
Keyword(s):  
Sleep Duration ◽  
Bandwidth Allocation ◽  
Packet Scheduling ◽  
Transmission Rate ◽  
Scheduling Algorithm ◽  
Complete Solution ◽  
Power Saving ◽  
Packet Delay ◽  
Ieee 802.16E ◽  
Higher Power

The high transmission rate for IEEE 802.16e (WiMAX) system can afford many kinds of high quality mobile services but also induces the higher power consumption. Therefore, the IEEE 802.16e specification proposes the power saving function for MSs. However, the actual implemented sleep duration for MS is fragmentary and short. In this paper, we have proposed a complete solution of the power saving function, which includes the Call Admission Control (CAC) algorithm, the Bandwidth Allocation (BWA) algorithm, and the packet scheduling algorithm to prolong the sleep duration of MS for UGS/ertPS, rtPS, nrtPS, and BE traffics. The simulation result reveals the efficiency of sleeping mode and the excellent performances in packet delay and dropping probability.

scholarly journals Fairness Consideration of Scheduling for Real-Time Services in 4G Systems

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Woei-Hwa Tarn ◽  
Jenhui Chen ◽  
Chun-Liang Lee
Keyword(s):  
Real Time ◽  
Bandwidth Allocation ◽  
Scheduling Algorithm ◽  
Base Station ◽  
System Capacity ◽  
Time Interval ◽  
Queuing Delay ◽  
Early Deadline First ◽  
Radio Resource Scheduling ◽  
4G Systems

In order to achieve higher resource utilization, the call admission control (CAC) will allow the number of connections into the system more than the system capacity can offer. However, the fairness problem will occur when these connections are real-time services. To solve this problem, in this paper, we propose a fair scheduling algorithm named contribution-based scheduling algorithm (CSA) for real-time polling service (rtPS) or guarantee bit rate (GBR) in the uplink direction in the forth-generation (4G) systems. In CSA, a mobile subscriber (MS) gains its contribution credit value at the end of each transmission time interval (TTI), which is based on the contribution of MS to the radio resource scheduling. The base station (BS) schedules the bandwidth according to the credit value. Simulation results show that CSA achieves higher fairness in bandwidth allocation while connection drop rate and queuing delay are also guaranteed as compared to the roundrobin (RR) and early deadline first (EDF) mechanisms.

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