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Admission Criterion
The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Genaro Hernandez-valdez – 1st expert on this subject based on the ideXlab platform
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Impact of the primary resource occupancy information on the performance of cognitive radio networks with VoIP traffic
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2012Co-Authors: Lirio S. Castellanos-lopez, Felipe A. Cruz-pérez, Mario E. Rivero-angeles, Genaro Hernandez-valdezAbstract:In this paper, the relevance of considering the primary network resource occupancy information on the Admission Criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call Admission control (CAC) strategies whose Admission Criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.
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CrownCom – Impact of the primary resource occupancy information on the performance of cognitive radio networks with VoIP traffic
Proceedings of the 7th International Conference on Cognitive Radio Oriented Wireless Networks, 2012Co-Authors: S. Lirio Castellanos-lopez, Mario E. Rivero-angeles, Felipe A. Cruz-pérez, Genaro Hernandez-valdezAbstract:In this paper, the relevance of considering the primary network resource occupancy information on the Admission Criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call Admission control (CAC) strategies whose Admission Criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.
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Simplified joint call and packet level teletraffic analysis of CAC strategies for VoIP traffic in wireless networks
2012 IEEE Wireless Communications and Networking Conference (WCNC), 2012Co-Authors: Lirio S. Castellanos-lopez, Felipe A. Cruz-pérez, Mario E. Rivero-angeles, Genaro Hernandez-valdezAbstract:In this paper, a simplified joint call and packet level teletraffic analysis method for performance evaluation of call Admission control (CAC) strategies for voice over IP (VoIP) traffic over wireless access networks is proposed. The Admission Criterion of new sessions of the considered CAC strategies is based on either the total number of sessions or the number of active sessions. Arrivals and completions of VoIP sessions, on/off activity detection, and periodic and constant length packet generation of individual VoIP active sessions are modeled. Packet buffering, adaptive modulation coding, and proportional fair sharing scheduling are also considered. Our proposed analysis is based on the quantized queue and cross-level linked decomposition mechanisms that we introduce in this paper to drastically simplify the mathematical and computational procedures with no major impact on the accuracy of the results. The developed analysis allows evaluating the performance of the CAC strategies in terms of the most relevant QoS metrics of VoIP traffic at both call and packet level and, at the same time, mathematical and computational complexity are reduced with no major impact on the accuracy of numerical results.
Felipe A. Cruz-pérez – 2nd expert on this subject based on the ideXlab platform
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Impact of the primary resource occupancy information on the performance of cognitive radio networks with VoIP traffic
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2012Co-Authors: Lirio S. Castellanos-lopez, Felipe A. Cruz-pérez, Mario E. Rivero-angeles, Genaro Hernandez-valdezAbstract:In this paper, the relevance of considering the primary network resource occupancy information on the Admission Criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call Admission control (CAC) strategies whose Admission Criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.
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CrownCom – Impact of the primary resource occupancy information on the performance of cognitive radio networks with VoIP traffic
Proceedings of the 7th International Conference on Cognitive Radio Oriented Wireless Networks, 2012Co-Authors: S. Lirio Castellanos-lopez, Mario E. Rivero-angeles, Felipe A. Cruz-pérez, Genaro Hernandez-valdezAbstract:In this paper, the relevance of considering the primary network resource occupancy information on the Admission Criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call Admission control (CAC) strategies whose Admission Criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.
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Simplified joint call and packet level teletraffic analysis of CAC strategies for VoIP traffic in wireless networks
2012 IEEE Wireless Communications and Networking Conference (WCNC), 2012Co-Authors: Lirio S. Castellanos-lopez, Felipe A. Cruz-pérez, Mario E. Rivero-angeles, Genaro Hernandez-valdezAbstract:In this paper, a simplified joint call and packet level teletraffic analysis method for performance evaluation of call Admission control (CAC) strategies for voice over IP (VoIP) traffic over wireless access networks is proposed. The Admission Criterion of new sessions of the considered CAC strategies is based on either the total number of sessions or the number of active sessions. Arrivals and completions of VoIP sessions, on/off activity detection, and periodic and constant length packet generation of individual VoIP active sessions are modeled. Packet buffering, adaptive modulation coding, and proportional fair sharing scheduling are also considered. Our proposed analysis is based on the quantized queue and cross-level linked decomposition mechanisms that we introduce in this paper to drastically simplify the mathematical and computational procedures with no major impact on the accuracy of the results. The developed analysis allows evaluating the performance of the CAC strategies in terms of the most relevant QoS metrics of VoIP traffic at both call and packet level and, at the same time, mathematical and computational complexity are reduced with no major impact on the accuracy of numerical results.
Lirio S. Castellanos-lopez – 3rd expert on this subject based on the ideXlab platform
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Impact of the primary resource occupancy information on the performance of cognitive radio networks with VoIP traffic
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2012Co-Authors: Lirio S. Castellanos-lopez, Felipe A. Cruz-pérez, Mario E. Rivero-angeles, Genaro Hernandez-valdezAbstract:In this paper, the relevance of considering the primary network resource occupancy information on the Admission Criterion of new secondary VoIP sessions in cognitive radio networks (CRNs) is investigated. In particular, the performance of two different call Admission control (CAC) strategies whose Admission Criterion is based either on the total number of primary and secondary sessions or only on the number of sessions of secondary users is compared. System performance is evaluated in terms of the most relevant quality of service metrics for VoIP traffic at both call and packet level. Numerical results clearly show that including primary resource occupancy information on the CAC strategy is an effective mean to improve system performance, especially for low to moderate traffic loads. For instance, assuming that voice toll quality is required, packet dropping probability is reduced more than 30% when primary resource occupancy information is additionally used on the CAC strategy.
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Simplified joint call and packet level teletraffic analysis of CAC strategies for VoIP traffic in wireless networks
2012 IEEE Wireless Communications and Networking Conference (WCNC), 2012Co-Authors: Lirio S. Castellanos-lopez, Felipe A. Cruz-pérez, Mario E. Rivero-angeles, Genaro Hernandez-valdezAbstract:In this paper, a simplified joint call and packet level teletraffic analysis method for performance evaluation of call Admission control (CAC) strategies for voice over IP (VoIP) traffic over wireless access networks is proposed. The Admission Criterion of new sessions of the considered CAC strategies is based on either the total number of sessions or the number of active sessions. Arrivals and completions of VoIP sessions, on/off activity detection, and periodic and constant length packet generation of individual VoIP active sessions are modeled. Packet buffering, adaptive modulation coding, and proportional fair sharing scheduling are also considered. Our proposed analysis is based on the quantized queue and cross-level linked decomposition mechanisms that we introduce in this paper to drastically simplify the mathematical and computational procedures with no major impact on the accuracy of the results. The developed analysis allows evaluating the performance of the CAC strategies in terms of the most relevant QoS metrics of VoIP traffic at both call and packet level and, at the same time, mathematical and computational complexity are reduced with no major impact on the accuracy of numerical results.
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Joint Call and Packet Level Performance Analysis of CAC Strategies for VoIP Traffic in Wireless
2011 IEEE Global Telecommunications Conference – GLOBECOM 2011, 2011Co-Authors: Lirio S. Castellanos-lopez, Genaro Hernandez-valdez, Mario E. Rivero-angeles, Felipe A. Cruz-pérezAbstract:Call Admission control (CAC) functionality is a critical requirement for guarantee the desired quality of service (QoS) for voice calls in IP-based wireless networks. In this paper, three different CAC strategies for voice over IP (VoIP) traffic over wireless access networks with packet buffering are mathematically analyzed through a joint call and packet level discrete time teletraffic model. The Admission Criterion (i.e., Admission threshold) of new sessions of these strategies is based on either the total number of sessions, the number of active sessions (i.e., sessions in talk-spurt periods), or the number of packets queued in the buffer. Admission threshold and buffer size can be both controlled for QoS provisioning in terms of session blocking and packet dropping probabilities. Arrivals and completions of VoIP sessions, on/off activity detection, and periodic and constant length packet generation (of active sessions) of individual VoIP sessions are modeled. The developed teletraffic analysis allows to evaluate the performance of the CAC strategies in terms of the most relevant QoS metrics of VoIP traffic at both call and packet level (i.e., session blocking and packet dropping probabilities and packet delay). Finally, the maximum traffic attained by the different studied-CAC strategies (while QoS provisioning is guaranteed) is obtained.