Adaptive mobility aware call admission control for mobile hotspot networks

This paper investigates the call admission control and wireless network resource utilization for mobile Hotspot (MH) networks. MH is a small moving wireless network with the integration of mobile relay node. MH offers diverse applications in areas, such as: high-speed rail coaches (HSRCs), trams and buses. MH support has become an attractive feature for next-generation wireless networks (NGWNs). User equipment (UE) in MH demands excellent wireless communication access and services. MH users can enjoy improved quality of service (QoS), lower transmission power and enhanced channel quality gains. However, due to the relatively small capacity size and mobility, the network performance of MH could easily get swamped/overwhelmed by any resource demand surge from UEs that could appear within its network coverage. This could lead to network congestion and QoS degradation. QoS provisioning for UEs in MH networks is an important and challenging issue. The call admission control (CAC) algorithm is necessary to admit and regulate traffic into the MH networks. Effective CAC helps to ensure that the accepted UEs are provided with the guaranteed QoS. Traditional CAC schemes are not designed for moving wireless networks. In this work, we proposed an Adaptive Thinning Mobility Aware (ATMA) CAC scheme for MH networks. We present a comprehensive analytical framework to analyse the QoS performance of our proposed scheme, using Markov chain model. New call blocking probability, handoff call dropping probability and resource block utilization are investigated. The numerical results reveal improved QoS performance of ATMA CAC compared to the traditional non-mobility-aware thinning (NMAT) CAC scheme.

[1]  Antonio Iera,et al.  End-to-end QoS provisioning in 4G with mobile hotspots , 2005, IEEE Network.

[2]  Mohammad S. Obaidat,et al.  Markov model-based adaptive CAC scheme for 3GPP LTE femtocell networks , 2015, 2015 IEEE International Conference on Communications (ICC).

[3]  Yu Cheng,et al.  QoS assurance for video service over heterogeneous mobile hotspots , 2012, 2012 IEEE International Conference on Communications (ICC).

[4]  Andrey Krendzel.  LTE-A Mobile Relay Handling: Architecture Aspects , 2013, EW.

[5]  Rachid Saadane,et al.  Call admission control scheme for LTE femtocell-macrocell integrated system , 2014, 2014 International Conference on Multimedia Computing and Systems (ICMCS).

[6]  P. Venkataram,et al.  Energy efficient scheduling in 4G smart phones for Mobile Hotspot application , 2012, 2012 National Conference on Communications (NCC).

[7]  Xiaoyu Duan,et al.  Performance Evaluation and Analysis on Group Mobility of Mobile Relay for LTE Advanced System , 2012, 2012 IEEE Vehicular Technology Conference (VTC Fall).

[8]  T. V. P. Sundararajan,et al.  Enhancing QoS parameters of group mobility model in WiMAX networks for military applications , 2013, 2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT).

[9]  Hyunsoo Yoon,et al.  An Effective Hotspot Cell Management Scheme Using Adaptive Handover Time in 4G Mobile Networks , 2005, TENCON 2005 - 2005 IEEE Region 10 Conference.

[10]  Ian F. Akyildiz,et al.  Mobile relay and group mobility for 4G WiMAX networks , 2011, 2011 IEEE Wireless Communications and Networking Conference.

[11]  Ian F. Akyildiz,et al.  The evolution to 4G cellular systems: LTE-Advanced , 2010, Phys. Commun..

[12]  Tommy Svensson,et al.  Moving cells: a promising solution to boost performance for vehicular users , 2013, IEEE Communications Magazine.

[13]  Wen-Tsuen Chen,et al.  An Enhanced Handover Scheme for Mobile Relays in LTE-A High-Speed Rail Networks , 2015, IEEE Transactions on Vehicular Technology.

[14]  Mariano Molina-Garcia,et al.  Performance evaluation of in-band LTE mobile relays in high speed railway environments , 2014, 2014 44th European Microwave Conference.

[15]  Wonjun Lee,et al.  Mobility-Aware Call Admission Control Algorithm With Handoff Queue in Mobile Hotspots , 2013, IEEE Transactions on Vehicular Technology.

[16]  Yusheng Ji,et al.  Predictive Group Handover Scheme with Channel Borrowing for Mobile Relay Systems , 2008, 2008 International Wireless Communications and Mobile Computing Conference.

[17]  Yeong Min Jang,et al.  Call admission control and traffic modeling for integrated macrocell/femtocell networks , 2012, 2012 Fourth International Conference on Ubiquitous and Future Networks (ICUFN).

[18]  Xiaoyang Wang,et al.  Handover control for LTE femtocell networks , 2011, 2011 International Conference on Electronics, Communications and Control (ICECC).