Call Admission Control Algorithms Based on Random Waypoint Mobility for IEEE802.16e Networks

Ibrahimi, Khalil; El-Azouzi, Rachid; Peyre, T.; Bouyakhf, El Houssine

doi:10.5772/9459

Cited by 2 publications

(4 citation statements)

References 15 publications

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“…The authors in [3] propose the performances reached by two CAC algorithms for the OFDMA-based IEEE802.16e (WiMAX) network in presence of two types of traffic: RealTime (RT) and Best-Effort (BE) including AMC scheme. Considering intra-cell mobility by using a realistic and general mobility model through the Random Waypoint (RWP) approach.…”

Section: Introductionmentioning

confidence: 99%

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Mobility management and call admission control for IEEE 802.16e wireless networks

El-Hammani

El-Azouzi

Ibrahimi

et al. 2010

Proceedings of the 5th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks

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The demand for wireless broadband access systems supporting mobility of the individual users has dramatically increased in recent years. Therefore, techniques for dynamically adapting the resources to the link condition become necessary for achieving high spectral efficiency. Our aim in this paper is to develop an admission control scheme that handles the intra-cell mobility issue in IEEE802.16e Wireless Networks with link adaptation. In particular we consider two types of intra-cell mobility: Low-mobility and High-mobility. We show how the admission threshold may adaptively controlled to achieve a better balance between guaranteing dropping probability and maximizing resource utilization. Simulation results show that the call admission control scheme under different types of mobility outperforms well by reserving amount of resource in order to provide an high priority of migration calls.

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Section: Introductionmentioning

confidence: 99%

“…Call Admission Control (CAC) schemes play an important part in radio resource management. Their aims are to maintain an acceptable QoS to different calls by limiting the number of ongoing calls in the system, minimize the call blocking and dropping probabilities and in the same time efficiently utilize the available resources [2,3,4].…”

Section: Introductionmentioning

confidence: 99%

Mobility management and call admission control for IEEE 802.16e wireless networks

El-Hammani

El-Azouzi

Ibrahimi

et al. 2010

Proceedings of the 5th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks

Self Cite

View full text Add to dashboard Cite

show abstract

“…The authors in propose the performances reached by two CAC algorithms for the OFDMA‐based IEEE802.16e (WiMAX) network in presence of two types of traffic: RT and BE including adaptive modulation and coding (AMC) scheme. Considering intracell mobility by using a realistic and general mobility model through the random waypoint approach.…”

Section: Introductionmentioning

confidence: 99%

“…But, given the complexity of the proposed model (size of the state of the Markov chain space), we have considered all these classes into one single class, referred by ‘RT’. Several studies in the literature (like in ) have shown that managing the whole RT for UGS, rtPS and ErtPS, and NRT for nrtPS and BE, as a single class of traffic is enough to guarantee the QoS requirements in an efficient way. The choice of the RT traffic, such as voice and video, is made, based into that class needs a better QoS than the other classes, so more resource management and it is usually delay sensitive.…”

Section: Introductionmentioning

confidence: 99%

Mobility management schemes for real‐time traffic and resource allocation in IEEE 802.16e mobile network

El-Hammani

Ibrahimi

Bouyakhf

et al. 2015

Int J Communication

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SUMMARYIn this paper, our aim is to develop in IEEE802.16e Wireless Networks with link adaptation, in the presence of real-time traffic call admission control (CAC) schemes. These CAC propose various scenarios of resource splitting and handling the intracell mobility. In particular, we consider two types of intracell mobility classes : low mobility class for mobiles moving usually with low speed between the neighboring regions of the cell and high mobility class for those moving with high speed and that can skip more than one region before changing their modulation. For this reason, we assume a time threshold T th that determines the minimum time a call must remain in a region before the base station changes its modulation. And we compare it with the time that a call may spend in a region to decide whether the base station will change its modulation or not. In the beginning, we introduce two CAC schemes. In the first one, we reserve a portion of resources to mobiles in migration with both high and low mobility. And in the second one, we give the priority just to mobiles in migration with high mobility. Then, we calculate the impact in the blocking and dropping probabilities. We show by numerical results that by the proposed CAC schemes, we can find a resource management that outperforms well under different types of mobility. But, to find a good tradeoff between dropping the calls in migration and blocking the new calls, we introduce the optimization problem in the second part. So, we are faced to the necessity of optimizing the results found in the first part. Therefore, we define an objective function to optimize, in order to ensure the highest quality of service for users and to give a better stability state between the dropping and blocking probability. We show that the proposed objective function gives the optimal resources allocation between the migrating and new arriving calls in the cell.

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Call Admission Control Algorithms Based on Random Waypoint Mobility for IEEE802.16e Networks

Cited by 2 publications

References 15 publications

Mobility management and call admission control for IEEE 802.16e wireless networks

Mobility management and call admission control for IEEE 802.16e wireless networks

Mobility management schemes for real‐time traffic and resource allocation in IEEE 802.16e mobile network

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