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  Call Admission Control Schemes in LTE Networks: A Survey  
  Authors : Muhammad Aminu Lawal; Ibrahim Saidu; Yusra Sade Abdullahi
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Long Term Evolution (LTE) network standard defines requirements to guarantee Quality of Service (QoS) for diverse applications such as VoIP, video and web browsing according to the Third Generation Partnership Project (3GPP) specifications. The Radio Resource Management (RRM) techniques such as Call Admission Control Schemes play an important role in providing such guarantees. Consequently, several schemes have been proposed to manage resources while ensuring QoS to wireless applications. This paper presents a survey of Call Admission Control (CAC) Schemes. These algorithms are classified into CAC with Pre-emption, Resource Reservation (RR), Resource Degradation (RD), Delay Awareness (DA) or Channel Awareness (CA). The operational procedure, strengths and weaknesses of each scheme are discussed. The comparative analysis of these schemes is also presented. The analysis provides an insight on open research issues for future research.

 

Published In : IJCSN Journal Volume 6, Issue 4

Date of Publication : August 2017

Pages : 523-532

Figures :02

Tables : 03

 

Muhammad Aminu Lawal : received the B.Eng. and M.Sc. degrees in Electrical and Computer Engineering from Federal University of Technology Minna, Nigeria, in 2007, Nigeria, and Universiti Putra Malaysia (UPM), in 2014, respectively. He is working with the department of Mathematics and Computer Science at Umaru Musa Yar’adua University Katsina, Katsina State, Nigeria His research interests include Scheduling Algorithm and Call Admission Control in LTE networks.

Ibrahim Saidu : obtained the B.Sc. and the M.Sc. degrees in Mathematics from Usmanu Danfodiyo University Sokoto, Nigeria, in 1998 and Bayero University Kano, Nigeria, in 2009, respectively. He also obtained another BIT and M.S. degrees in Computer Science from Al-Madinnah International University and Universiti Putra Malaysia (UPM), respectively. In addition, he also obtained PhD degree in Computer Networks at UPM. Currently, he is working with the department of Mathematics and Computer Science at Umaru Musa Yar’adua University Katsina, Katsina State, Nigeria. His research interests include Quality of Service and Resource Management in Wireless Networks.

Yusra Sade Abdullahi : obtained B.Sc and M.Sc in physics from Bayero University Kano, Nigeria in 2011 and 2017 respectively. She is currently working with the department of Physics at Umaru Musa Yar’adua University Katsina, Katsina State, Nigeria. Her research interests include Computational and Solid state Physics.

 

LTE Networks, Call Admission Control, Radio Resource Management, QoS.

In this paper, we presented a survey of CAC schemes proposed in recent literature, aiming at admitting call requests into the LTE network based on available resources. The schemes are classified into CAC with Resource Reservation (RR) , Resource Degradation (RD) ,Pre-emption ,Delay Awareness (DA) and Channel Awareness (CA).The way each scheme operates as well as the advantages and the disadvantages are also discussed. Furthermore, comparative analysis has been provided. The analysis indicates that the majority of the schemes have poor resource utilization because resources are not fully used. Also the analysis shows new calls experience high call blocking probability due to prioritization used.

 

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