Performance Assessment for LTE-Advanced Networks with Uniform Fractional Guard Channel over Soft Frequency Reuse Scheme

Safwat, Mahammad A.; El-Badawy, Hesham M.; Yehya, Ahmad; El-Motaafy, Hosni

doi:10.4236/wet.2013.44024

Cited by 5 publications

(7 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The corresponding blocking probability with M = M Dh is calculated. The result of NCB is compared with that from another call admission policy (Uniform Fractional Guard Channel (UFGC)) published in [15].…”

Section: Numerical Results and Analysismentioning

confidence: 99%

See 1 more Smart Citation

Performance Analysis for New Call Bounding Scheme with SFR in LTE-Advanced Networks

Safwat

Badawy

Yehya³

et al. 2014

2014 IEEE Intl Conf on High Performance Computing and Communications, 2014 IEEE 6th Intl Symp on Cyberspace Safety and Security

Self Cite

View full text Add to dashboard Cite

the call admission control (CAC) optimizes the use of allocated channels against offered traffic maintaining the required quality of service (QoS). Provisioning QoS to user at celledge is a challenge where there is limitation in cell resources due to inter-cell interference (ICI). New Call bounding scheme is a Call Admission control that depends on restricting the number of new calls accepted into the cell by a threshold. In this paper, traffic analysis in cell-edge is developed based on NCB policy using three dimension Markov model. The model is based on actual resources allocated to cell-edge users according to SoftFrequency Reuse (SFR) scheme in LTE-Advanced system. In the proposed model, the performance metrics in terms of blocking and dropping probability for cell-edge and cell-core users is deduced separately; in addition, the optimal parameter settings for system performance metrics is developed.

show abstract

Section: Numerical Results and Analysismentioning

confidence: 99%

“…Optimality in minimum number of channels is also deduced under hard constraint in both blocking probability B n and dropping probability D h . The obtained results are then compared with FGC scheme in [15].…”

Section: Introductionmentioning

confidence: 98%

Performance Analysis for New Call Bounding Scheme with SFR in LTE-Advanced Networks

Safwat

Badawy

Yehya³

et al. 2014

2014 IEEE Intl Conf on High Performance Computing and Communications, 2014 IEEE 6th Intl Symp on Cyberspace Safety and Security

Self Cite

View full text Add to dashboard Cite

show abstract

“…The UFC scheme reserves a non-integral number of guard channels for handover calls by rejecting new calls with some probability. According to the studies given in [9,14,15] show that the UFC scheme has a lower blocking probability for new calls in a low handover and new calls traffic ratio.…”

Section: Uniform Fractional Channel Schemementioning

confidence: 99%

Uniform Fractional Band CAC Scheme for QoS Provisioning in Wireless Networks

2015

Journal of Information Processing Systems

View full text Add to dashboard Cite

Generally, the wireless network provides priority to handover calls instead of new calls to maintain its quality of service (QoS). Because of this QoS provisioning, a call admission control (CAC) scheme is essential for the suitable management of limited radio resources of wireless networks to uphold different factors, such as new call blocking probability, handover call dropping probability, channel utilization, etc. Designing an optimal CAC scheme is still a challenging task due to having a number of considerable factors, such as new call blocking probability, handover call dropping probability, channel utilization, traffic rate, etc. Among existing CAC schemes such as, fixed guard band (FGB), fractional guard channel (FGC), limited fractional channel (LFC), and Uniform Fractional Channel (UFC), the LFC scheme is optimal considering the new call blocking and handover call dropping probability. However, this scheme does not consider channel utilization. In this paper, a CAC scheme, which is termed by a uniform fractional band (UFB) to overcome the limitations of existing schemes, is proposed. This scheme is oriented by priority and non-priority guard channels with a set of fractional channels instead of fractionizing the total channels like FGC and UFC schemes. These fractional channels in the UFB scheme accept new calls with a predefined uniform acceptance factor and assist the network in utilizing more channels. The mathematical models, operational benefits, and the limitations of existing CAC schemes are also discussed. Subsequently, we prepared a comparative study between the existing and proposed scheme in terms of the aforementioned QoS related factors. The numerical results we have obtained so far show that the proposed UFB scheme is an optimal CAC scheme in terms of QoS and resource utilization as compared to the existing schemes.

show abstract

“…The steps of SOR algorithm are as follows [7], [10]: 1. The number of total valid states in the set Γ is computed;…”

Section: Lfgc/sfr Markov Modelmentioning

confidence: 99%

“…These lead to dramatic increasing in blocking probability at cell-edge. In [10], the handover impact is considered using UFGC scheme which provides priority for handover calls by throttle the acceptance of new call.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Limited Fractional Guard Channel for SFR-Based LTE-Advanced Networks

Safwat¹,

El-Badawy²,

Yehya³

et al. 2015

IJCCE

Self Cite

View full text Add to dashboard Cite

Abstract:Call admission control (CAC) is a key enabling technique to ensure quality of service (QoS) provisioning for mobile users. Limited fractional guard channel is one of most effective strategy in call admission control. Inter-cell interference coordination (ICIC) is considered as the most promising approach for LTE to mitigate inter-cell interference. One important approach for ICIC is soft frequency reuse (SFR). In this paper, a new analytical model is derived to evaluate LFGC strategy in SFR-based systems. The performance measures of interest are new call blocking probability, handover dropping probabilities, throughput and mean time response. Further, discrimination in the analysis between cell-core and cell-edge is performed. All performance metrics is deduced separately at each cell zone.

show abstract

Performance Assessment for LTE-Advanced Networks with Uniform Fractional Guard Channel over Soft Frequency Reuse Scheme

Cited by 5 publications

References 12 publications

Performance Analysis for New Call Bounding Scheme with SFR in LTE-Advanced Networks

Performance Analysis for New Call Bounding Scheme with SFR in LTE-Advanced Networks

Uniform Fractional Band CAC Scheme for QoS Provisioning in Wireless Networks

Performance Evaluation of Limited Fractional Guard Channel for SFR-Based LTE-Advanced Networks

Contact Info

Product

Resources

About