A Modified Method for Point-to-Group Blocking Probability Calculation in Switching Networks with Call Admission Control Mechanisms

2018 ◽  
Author(s):  
Mariusz Glabowski ◽  
Maciej Sobieraj
Keyword(s):  
Admission Control ◽  
Call Admission Control ◽  
Blocking Probability ◽  
Control Mechanisms ◽  
Switching Networks ◽  
Call Admission ◽  
Modified Method ◽  
Probability Calculation ◽  
Group Blocking

Call Admission Control Algorithm with Efficient Handoff for Both 4G and 5G Networks

2021 ◽  
Vol 13 (2) ◽  
pp. 1-08
Author(s):  
Maharazu Mamman ◽  
Zurina Mohd Hanapi
Keyword(s):  
Admission Control ◽  
Mobile Networks ◽  
Call Admission Control ◽  
Blocking Probability ◽  
Health Sector ◽  
5G Networks ◽  
Transportation Energy ◽  
Call Blocking Probability ◽  
Call Admission ◽  
Performance Challenges

Recently, many generations of mobile networks have changed from one transition to another transition. The mode of transition from the first generation (1G) to the fifth generation (5G) is characterized by a lot of performance challenges such as delay, speed of the users, mobility, and variety of services. Currently, different from prior generations, 5G is not only concerned with the mobile networks but also, with various applications and different services such as health sector, transportation, energy consumption, safety well as Smart City. All these services are incorporated by 5G. In this paper, we proposed a call admission control (CAC) algorithm with an efficient handoff for both 4G and 5G networks. Simulation is used to evaluate the effectiveness of the proposed algorithm, and the obtained results indicate it considerably performs better than do other algorithms based on valuable metrics such as data throughput, call blocking probability (CBP), and call dropping probability (CDP).

Enhanced Adaptive Call Admission Control Scheme With Bandwidth Reservation for LTE Networks

2021 ◽  
Vol 12 (1) ◽  
pp. 23-42
Author(s):  
Maniru Malami Umar ◽  
Amimu Mohammed ◽  
Abubakar Roko ◽  
Ahmed Yusuf Tambuwal ◽  
Abdulhakeem Abdulazeez
Keyword(s):  
Real Time ◽  
Admission Control ◽  
Call Admission Control ◽  
Blocking Probability ◽  
Degradation Mechanism ◽  
Radio Resource Management ◽  
System Level ◽  
Bandwidth Reservation ◽  
Lte Networks ◽  
Call Admission

Call admission control (CAC) is one of the radio resource management techniques that regulates and provide resources for new or ongoing calls in the network. The existing CAC schemes wastes bandwidth due to its failure to check before degrading admitted real-time calls and it also increases the call dropping probability (CBP) and calling blocking probability (CBP) of real-time calls due to the delay incurred when bandwidth is degraded from them. This paper proposed an enhanced adaptive call admission control (EA-CAC) scheme with bandwidth reservation. The scheme employs a prior-check mechanism that ensured bandwidth to be degraded will be enough to admit the new call request. It further incorporates an adaptive degradation mechanism that degrades non-real time calls before degrading the RT calls. The performance of the EA-CAC scheme was evaluated against two existing schemes using Vienna LTE system level simulator. The EA-CAC scheme exhibits better performance compared to the two schemes in terms of throughput, CBP, and CDP of RT calls without sacrificing the performance of NRT calls.

scholarly journals Congestion Control Call Admission Control (CC-CAC) Algorithm for Mobile Broadband Networks

2019 ◽  
Vol 3 (5) ◽  
Author(s):  
Ibrahim Saidu ◽  
Abubakar Roko ◽  
Nasir Aliyu Shinkafi ◽  
Solomon Yese
Keyword(s):  
Congestion Control ◽  
Admission Control ◽  
High Speed ◽  
Call Admission Control ◽  
Blocking Probability ◽  
Degradation Mechanism ◽  
Base Station ◽  
Broadband Networks ◽  
Mobile Broadband ◽  
Call Admission

Mobile broadband networks are continuously faced with the challenge of limited resources due to the increasing demand for high speed Internet services. To manage these resources, call admission control (CAC) which determines whether or not a connection request should be accepted or rejected is one of the resource management techniques usually deployed. A Dynamic QoS-aware CAC algorithm was recently proposed to improve resource utilization. However, the algorithm detects congestion of the network only after it has occurred, which leads to increase in blocking probability and thus lead to reduction in throughput. In this paper, a congestion control call admission control (CC-CAC) algorithm is proposed to reduce call blocking and increase throughput of all connection classes. The CC-CAC employs a congestion control mechanism that regulates the base station buffer to operate at a target threshold. It also employs a dynamic bandwidth degradation mechanism to degrade the resources of the admitted connections when resources are not sufficient to admit more connections. The algorithm is evaluated using simulation. The results show that the proposed scheme outperforms the benchmark scheme in terms of decrease in blocking probability and increase in throughput for all connection classes.

scholarly journals A Novel Call Admission Control Policy Using Mobility Prediction and Throttle Mechanism for Supporting QoS in Wireless Cellular Networks

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Chen-Feng Wu ◽  
Liang-Teh Lee ◽  
Hung-Yuan Chang ◽  
Der-Fu Tao
Keyword(s):  
Cellular Networks ◽  
Admission Control ◽  
Call Admission Control ◽  
Blocking Probability ◽  
Control Policy ◽  
Data Mining Technique ◽  
Wireless Cellular Networks ◽  
Call Blocking Probability ◽  
System Utilization ◽  
Call Admission

The decision of call admission becomes an important work owing to the scarce wireless spectrum for wireless cellular networks. If there exists adequate information for call admission control (CAC) schemes, the terms of quality of service (QoS), such as call dropping probability (CDP), call blocking probability (CBP), and system utilization, will be kept in a certain acceptable level. Therefore, a prediction system which can predict most information, such as system utilization and CDP, in advance with a novel data mining technique and a distributed CAC scheme is presented in this paper. Based on the prediction results and the bandwidth consumption of adjacent cells, the proposed CAC scheme is able to decide to admit a new call. The throttle flag that can indicate the usage of current cell is proposed to prevent the newly admitted call request from being blocked in adjacent cells if handoff is needed. The simulation results show that the proposed CAC scheme can maintain the CDP below a predefined threshold, and the CBP is also lower than the cluster prediction and traditional guard channel policies.

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