An integrated routing and admission control mechanism for real-time multicast connection establishment

2001 ◽  
Vol 14 (3) ◽  
pp. 287-303 ◽  
Author(s):  
Xiaohua Jia ◽  
Yongbing Zhang ◽  
Niki Pissinou ◽  
Sam Makki
Keyword(s):  
Real Time ◽  
Admission Control ◽  
Control Mechanism

Hierarchical QoS Admission Control Mechanism for IEEE 802.16j Mobile Multi-Hop Relay WiMAX Network

2014 ◽  
pp. 205-218
Author(s):  
Rohaiza Yusoff ◽  
Mohd Dani Baba ◽  
Muhammad Ibrahim
Keyword(s):  
Real Time ◽  
Admission Control ◽  
Performance Metrics ◽  
Control Mechanism ◽  
Bandwidth Utilization ◽  
Control Approach ◽  
Ieee 802.16J ◽  
Set Up ◽  
Wimax Network

This chapter presents some performance issues in Worldwide Interoperability for Microwave Access (WiMAX) network and focus on the capability of non-transparent relay in Mobile Multi-Hop Relay (MMR) WiMAX Network. In this work, an admission control mechanism with hierarchy Quality of Service (QoS) is developed for the relay architecture. An open source-based simulator is used to evaluate the three types of QoS classes, which are Unsolicited Grant Access (UGS), Real Time Polling Service (rtPS), and Non-Real Time Polling Service (nrtPS). Two scenarios of non-transparent relay topologies are set up for different numbers of subscribers with different types of QoS application classes. Three performance metrics, which are bandwidth utilization, number of slots used, and number of admitted service flow, are observed and plotted in graph. The results show the hierarchy-based QoS admission control mechanism can enhance the throughput of provided services by 35% compared to the conventional method without the admission control approach.

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.

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