A dynamic strategy for packet scheduling and bandwidth allocation based on channel quality in IEEE 802.16e OFDMA system

2014 ◽  
Vol 39 ◽  
pp. 52-60 ◽  
Author(s):  
Feng-Ming Yang ◽  
Wei-Mei Chen ◽  
Jean-Lien C. Wu
Keyword(s):  
Bandwidth Allocation ◽  
Packet Scheduling ◽  
Ieee 802.16E ◽  
Ofdma System ◽  
Channel Quality ◽  
Dynamic Strategy

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 A New Swap-Based Frequency-Domain Packet Scheduling Algorithm in OFDMA System with Data Queue Size Constraints

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Lin Shao ◽  
Yunxiao Zu ◽  
Hanyong Shao
Keyword(s):  
Frequency Domain ◽  
Multiple Access ◽  
Packet Scheduling ◽  
Scheduling Algorithm ◽  
System Throughput ◽  
Queue Size ◽  
Frequency Division ◽  
Ofdma System ◽  
Size Constraints ◽  
Throughput Improvement

This paper aims at the frequency-domain packet scheduling (FDPS) problem in orthogonal frequency division multiple access (OFDMA) system. Under users’ data queue size constraints, a new swap-based FDPS algorithm is proposed to achieve further improvement in system throughput. In this algorithm, the swap of physical resource blocks (PRBs) between different users is introduced to give a comprehensive view of the overall scheduling process. Moreover, the proposed algorithm optimizes the choosing method of swap candidates and always tries to select the user who can maximize the throughput improvement. Simulation results demonstrate that this new algorithm can improve the system throughput significantly as well as reduce the resource waste effectively.

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