scholarly journals A Channel Based Fair Scheduling Scheme For Downlink High Speed Data In CDMA Networks

2021 ◽  
Author(s):  
Ying Zhao
Keyword(s):  
High Speed ◽  
Packet Scheduling ◽  
Radio Resource Management ◽  
Research Work ◽  
Tolerance Factor ◽  
System Throughput ◽  
Fair Allocation ◽  
Scheduling Scheme ◽  
Cdma Networks ◽  
High Speed Data

High speed data transmission in wireless networks demands better radio resource management schemes. The research work for this thesis considers packet scheduling in downlinks of a cellular CDMA system for delay-tolerant applications. In this thesis, a packet scheduling scheme is proposed that attempts to provide fair allocation of individuals throughout and obtain relatively high system throughput. It is based on combined consideration of channel conditions, required throughput and achieved average throughput. A priority factor and system tolerance factor are introduced. We confirmed the trade-off between system throughout (i.e., efficiency) and individual throughput (i.e., fairness) by both analysis and simulation. Relative performance between the proposed scheme and traditional schemes is evaluated through simulation to confirm the analytical observations. The sensitivity of system tolerance factor towards efficiency and fairness was also investigated. Overall, the proposed scheme performs between absolute unfairness scheme and absolute fairness scheme in term s of system throughput and fair allocation of individual throughput.

scholarly journals A Channel Based Fair Scheduling Scheme For Downlink High Speed Data In CDMA Networks

2021 ◽  
Author(s):  
Ying Zhao
Keyword(s):  
High Speed ◽  
Packet Scheduling ◽  
Radio Resource Management ◽  
Research Work ◽  
Tolerance Factor ◽  
System Throughput ◽  
Fair Allocation ◽  
Scheduling Scheme ◽  
Cdma Networks ◽  
High Speed Data

High speed data transmission in wireless networks demands better radio resource management schemes. The research work for this thesis considers packet scheduling in downlinks of a cellular CDMA system for delay-tolerant applications. In this thesis, a packet scheduling scheme is proposed that attempts to provide fair allocation of individuals throughout and obtain relatively high system throughput. It is based on combined consideration of channel conditions, required throughput and achieved average throughput. A priority factor and system tolerance factor are introduced. We confirmed the trade-off between system throughout (i.e., efficiency) and individual throughput (i.e., fairness) by both analysis and simulation. Relative performance between the proposed scheme and traditional schemes is evaluated through simulation to confirm the analytical observations. The sensitivity of system tolerance factor towards efficiency and fairness was also investigated. Overall, the proposed scheme performs between absolute unfairness scheme and absolute fairness scheme in term s of system throughput and fair allocation of individual throughput.

Appraisal of OFDM for multi-carrier, high-speed data rate wireless communication networks

2019 ◽  
Author(s):  
Muhammad Bello Abdullahi
Keyword(s):  
Wireless Communication ◽  
Communication Networks ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Research Work ◽  
Wireless Systems ◽  
Data Rate ◽  
High Quality Research ◽  
Global Issues ◽  
High Speed Data

Orthogonal Frequency Division Multiplexing (OFDM) is used to achieve multi-carrier signals and high- Speed data rate in free space. OFDM-based systems operate in the hostile multipath radio environment, which allows efficient sharing of limited resources. This research work was designed, developed and simulated an OFDM System using the basic blocks of Simulink in MATLAB/Simulink software, to support multi-carrier, high-speed data rates. This was achieved in backing of collection and review of high-quality research papers, which reported the latest research developments in OFDM communications networks, and its applications in future wireless systems. The research work significantly increases the speed of data rate signals, and many critical problems associated with the applications of OFDM technologies in future wireless systems are still looking for efficient solutions. This would overcome the global issues and challenges facing the limited bandwidth in wireless communication network.

scholarly journals Research and Simulation on Wireless Packet Scheduling Scheme Based on High-Speed Packet Access Network

2014 ◽  
Vol 8 (1) ◽  
pp. 92-95
Author(s):  
Hu Linna ◽  
Cao Ning ◽  
Mao Minghe
Keyword(s):  
High Speed ◽  
Packet Scheduling ◽  
Scheduling Algorithm ◽  
Access Network ◽  
Average Cell ◽  
Scheduling Scheme ◽  
Packet Access ◽  
Packet Drop ◽  
Wireless Packet

The efficiency of high speed packet access (HSPA) systems is mainly based on Packet Scheduling Scheme which will be the key to influencing on the system performance and ensuring the service quality for the users. In this paper, we introduce a three step packet scheduling scheme to provide quality of services (QoS) guaranteed for high speed uplink packet access. Then, we proposed an improved packet scheduling algorithm based on QoS parameter for mixed service applications in order to meet the actual QoS needs of the different systems. This algorithm calculated the scheduling priority based on the comprehensive factors, including the queuing status of each user, QoS requirements and the sum of speeds on each channel. The simulation results show that the performance efficiency of HSPA systems employed proposed algorithm is superior compared to the conventional PF and M-LWDF algorithm in average packet drop and average cell throughput.

scholarly journals Industrial Internet of Things - Control of Industry Simulation Through Different Protocols

2021 ◽  
Vol 2115 (1) ◽  
pp. 012011
Author(s):  
P Surya ◽  
Asuman Suenbuel ◽  
Arockia Selvakumar Arockia Doss
Keyword(s):  
Internet Of Things ◽  
High Speed ◽  
Data Transfer ◽  
Research Work ◽  
Industrial Internet Of Things ◽  
Industrial Internet ◽  
High Speed Data ◽  
Single Data ◽  
Smart Technologies ◽  
Speed Data Transmission

Abstract In past few years there is a great demand for internet of things (IoT), It has become an important part of smart technologies. There have been many researches going-on in internet of things in both academics and industries. IoT using in industries is also known as Industrial Internet of Things (IIoT). Where smart sensors are used along with IoT are used. This research work is done to identify the best protocol for high-speed data transmission with no loss of data to prevent command lag between mobile controller and industry. In this research a soda filling Industry simulation with 3 different plants was controlled through a mobile application through different protocols with 4 different features of data transfer. The time of data sending and receiving from application and ESP32 controller are stored in a log. The speed of data transfer of all different protocols is compared. From the final result, ThingSpeak is an optimum protocol for this application which is 36% faster than HTTP in single data transfer and 39% faster than MQTT in continuous data transfer.

MAC Optimization Based on the Radio Resource Allocation in a 5G eMBB System Simulated in the MmWave Model

2021 ◽  
Vol 10 (2) ◽  
pp. 32-54
Author(s):  
Ismail Angri ◽  
Abdellah Najid ◽  
Mohammed Mahfoudi
Keyword(s):  
Packet Scheduling ◽  
Radio Resource Management ◽  
Data Extraction ◽  
System Throughput ◽  
Multiple Use ◽  
Mobile Nodes ◽  
Radio Resource ◽  
New Radio ◽  
Machine Type Communications ◽  
Downlink Packet Scheduling

5G NR (new radio) systems support multiple use cases, namely enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine-type communications (mMTC), to meet the needs of different types of applications. The multi users-downlink packet scheduling (MU-DLPS) is used for the 5G NR radio resource management (RRM). In this paper, the authors show that the radio resource scheduling algorithms, which have been applied to 4G, are also efficient and can be used in 5G networks. In this objective, the authors simulated scheduling schemes in a 5G eMBB environment. The algorithms were developed in C++ for the first time and were simulated using the mmWave model of the NS-3 simulator. Mobility scenarios with fixed and mobile nodes have been implemented. The comparison was made using python programs, newly and specifically developed for the data extraction. The results show that five strategies achieve remarkable values in terms of system throughput and downlink latency.

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