Modified Proportional Fair Scheduling Algorithm for Heterogeneous LTE-A Networks

Growing of time-sensitive applications such as streaming multimedia, voice over IP and online gaming required strongly support from mobile communication technology. So, the persistent need for wireless broadband technologies such as LTE-A is essential. LTE-A can achieve QoS in an efficient manner by using a reliable packet scheduling algorithm. It also supports good cell coverage by using heterogeneous capability. In this paper, modifications of proportional fair (PF) algorithm are proposed with different methods to compute the average throughput, which is the main and important parameter in the PF cost function. These methods are geometric mean, root mean square and arithmetic mean. Vienna simulator is used to study the performance of the proposed algorithms. A comparison between PF modifications and the most famous algorithms (the original PF and Best CQI algorithms) with various UE velocities is introduced. Average UE throughput, spectral efficiency, energy per bit, cell throughput and fairness are used as performance indicators. The results expose that QPF has best improved values for spectral efficiency, energy per bit and fairness by 8.4%, 14%, and 9.3%, respectively than original PF. However, Best CQI has a better value of average UE and cell throughput than all algorithms of 2% and 1.8% in low and medium UE velocity, respectively, but the best value of all types of throughput at high speed is gained by QPF. QPF and GMPF has the same performance in fairness with all UEs speeds.

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A Modified Proportional Fair Scheduling Algorithm for the Electric Power Wireless Private Network

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.614-615.1749 ◽

2012 ◽

Vol 614-615 ◽

pp. 1749-1753

Author(s):

Jin Ping Cao ◽

Jian Ming Liu ◽

Shao Min Zhu ◽

De Quan Gao

Keyword(s):

Electric Power ◽

High Speed ◽

Scheduling Algorithm ◽

Distribution Networks ◽

Communication Performance ◽

Proportional Fair ◽

Wireless Communication Network ◽

Radio Resources ◽

Proportional Fair Scheduling ◽

Private Network

With the development of smart grid, the requirements of high speed, low delay and better coverage have motivated a electric power wireless network that bridge the communication gaps between the transmission system and the load. In this paper, we introduce a new electric power wireless communication network, and give a general overview of studies on the major characters of communication such as wide coverage, a lot of measurement points in distribution networks as well. In order to improve the communication performance, the paper proposes a modified proportional fair algorithm, which allocates the radio resources by introducing a Quality-of-Service (QoS) scale factor. By comparing with the proportional fair algorithm, we get the conclusion that the modified algorithm is more suitable for the electric power wireless private network.

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The Communication Solution for LTE System under Radar Interference Circumstance

International Journal of Antennas and Propagation ◽

10.1155/2015/849695 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 3

Author(s):

Hang Zheng ◽

Yunjie Li ◽

Yunpeng Zhu

Keyword(s):

Communication System ◽

Packet Scheduling ◽

Scheduling Algorithm ◽

Detection Mechanism ◽

Proportional Fair ◽

Fair Scheduling ◽

Proposed Model ◽

Packet Scheduling Algorithm ◽

Excellent Candidate ◽

Proportional Fair Scheduling

The interferences of radar and communication system coexistent environment are analyzed in this paper, and an attractive detection mechanism of the radar video signal and proportional fair scheduling algorithm based on channel sensing are proposed to realize the communication by using radar radiant intermissions. And the simulation is designed based on the proposed model to test this plan. The simulated results show that the packet scheduling algorithm is an excellent candidate for the communication solution for LTE system under radar radiant intermissions.

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