Abstract

In this paper, we propose new scheduling algorithms to improve the performance of the code division multiple access (CDMA) enabled next generation ethernet passive optical networks (NG-EPON). The original dynamic bandwidth allocation (DBA) scheme based on a round robin scheduling algorithm was originally proposed for the first generation CDMA based EPON where the network throughput and delay requirements per optical network unit (ONU) are relatively moderate. On the other hand, in the NG-EPON standard, the network capacity is increased up to 100 Gb/s and stringent requirements are applied to the packet delay. For this reason, in this work, we propose new scheduling algorithms for NG-EPON to assign a grant size on each upstream CDMA code in order to guarantee the newly required network throughput and delay performance. The first DBA algorithm is the first in first out (FIFO) algorithm in which the ONU requests are ordered in terms of their request arrival time. The second scheme is the reservation pattern (RP) algorithm in which each ONU starts transmitting its queue content in its reserved pattern of subcycles following a pre-defined pattern. The performances of the newly proposed algorithms are evaluated and compared. Results show that both newly proposed scheduling schemes can significantly improve the network performance in terms of the packet delay, jitter, and throughput. In addition, the results are compared to many dynamic wavelength and bandwidth allocation (DWBA) algorithms. The results show that the performances are comparable and that CDMA can be a good alternative for WDM for multi-channels based NG-EPON.

© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Full Article  |  PDF Article
OSA Recommended Articles
Low-Latency Dynamic Wavelength and Bandwidth Allocation Algorithm for NG-EPON

Syed Baqar Hussain, Weisheng Hu, Haiyun Xin, and Ahmed Mohammed Mikaeil
J. Opt. Commun. Netw. 9(12) 1108-1115 (2017)

Code Division Multiple Access Enabled Dynamic Bandwidth Allocation (CDBA) Scheme for EPON

Elie Inaty, Robert Raad, Paul Fortier, and Martin Maier
J. Opt. Commun. Netw. 4(3) 271-281 (2012)

References

  • View by:
  • |
  • |
  • |

  1. M. Maier and A. Ebrahimzadeh, “Towards Immersive Tactile Internet Experiences: Low-Latency FiWi Enhanced Mobile Networks With Edge Intelligence [Invited],” J. Opt. Commun. Netw. 11(4), B10–B25 (2019).
    [Crossref]
  2. S. Bjørnstad, R. Veisllari, D. Chen, F. Tonini, and C. Raffaelli, “Minimizing delay and packet delay variation in switched 5G transport networks,” J. Opt. Commun. Netw. 11(4), B49–B59 (2019).
    [Crossref]
  3. L. dos Santos, F. Durand, A. Goedtel, and T. Abrao, “Auto-tuning PID distributed power control for next-generation passive optical networks,” J. Opt. Commun. Netw. 10(10), D110–D125 (2018).
    [Crossref]
  4. R. Matsoumoto, T. Kodama, S. Shimizu, R. Nomura, K. Omichi, N. Wada, and K. Kitayama, “40G-OCDMA-PON system with asymmetric structure using single multi-port and sampled SSFBG Encoder/Decoders,” J. Lightwave Technol. 32(6), 1132–1143 (2014).
    [Crossref]
  5. H. Mrabet, I. Dayoub, and R. Attia, “Comparative study of 2D-OCDMA-WDM system performance in 40-Gb/s PON context,” IET Optoelectron. 11(4), 141–147 (2017).
    [Crossref]
  6. R. Priyadharshini, G. Geetha, and M. Meenakshi, “Integration of OCDMA based NG-PON and Fi-Wi networks for wireless access,” IEEE/ICCSP, pp. 0967–0973, Apr. 2017.
  7. V. Houtsma, D. Venn, and E. Harstead, “Recent progress on standardization of next-generation 25, 50, and 100G EPON,” J. Lightwave Technol. 35(6), 1228–1234 (2017).
    [Crossref]
  8. A. Bekkali, S. Ishimura, K. Tanaka, K. Nishimura, and M. Suzuki, “Multi-IF-over-Fiber System with Adaptive Frequency Transmit Diversity for High Capacity Mobile Fronthaul,” J. Lightwave Technol. 37(19), 4957–4966 (2019).
    [Crossref]
  9. O. Jafari, W. Shi, and S. LaRochelle, “Silicon Photonic Modulator Using Coupled Bragg Grating Resonators in a Mach-Zehnder structure,” IEEE/OSA CLEO Conf2019.
  10. G. W. Lu, J. Hong, H. Zhang, F. Qiu, and S. Yokoyama, “DAC-less PAM4 Transmitter using Electro-optic Polymer Dual-drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics,” IEEE/OSA CLEO Conf, 2019.
  11. Morad Eghbal and Mehdi Shadaram, “Tandem Dual-Electrode Mach Zehnder Modulators generating W-Band signals for an OCDMA Radio-over-Fiber System,” IEEE Photonics Society Summer Topical Meeting Series (SUM) Conf, 2017.
  12. N. Kataoka, “Full-duplex, 10 Gbps, asynchronous OCDMA system,” IEEE/ICTON Conf, 2010.
  13. N. Kataoka, G. Cincotti, X. Wang, N. Wada, and K Kitayama, “Recent progress of Optical CDMA Technologies,” IEEE/OSA, ACPCE Conf, 2010.
  14. K. Kitayama, “Rationale of OCDMA/OFDMA for NG-PON,” IEEE ICO ICIP Conf, 2011.
  15. M. Hadi and M. R. Pakravan, “Analysis and design of adaptive OCDMA Passive Optical Networks,” J. Lightwave Technol. 35(14), 2853–2863 (2017).
    [Crossref]
  16. E. Inaty and R. Raad, “CDMA-based dynamic power and bandwidth allocation (DPBA) scheme for multiclass EPON: a weighted fair queuing approach,” J. Opt. Commun. Netw. 10(2), 52–64 (2018).
    [Crossref]
  17. L. Wang, X. Wang, M. Tornatore, H. S. Chung, H. H. Lee, S. Park, and B. Mukherjee, “Dynamic bandwidth and wavelength allocation scheme for next-generation wavelength-agile EPON,” J. Opt. Commun. Netw. 9(3), B33–B42 (2017).
    [Crossref]
  18. S. B. Hussain, W. Hu, H. Xin, and A. M. Mikaeil, “Low-latency dynamic wavelength and bandwidth allocation algorithm for NG-EPON,” J. Opt. Commun. Netw. 9(12), 1108–1115 (2017).
    [Crossref]
  19. W. Wang, W. Guo, and W. Hu, “Dynamic wavelength and bandwidth allocation algorithms for mitigating frame reordering in NG-EPON,” J. Opt. Commun. Netw. 10(3), 220–228 (2018).
    [Crossref]
  20. S. Hussain, W. Hu, H. Xin, A. M. Mikaeil, and A. Sultan, “Flexible wavelength and dynamic bandwidth allocation for NG-EPONs,” J. Opt. Commun. Netw. 10(6), 643–652 (2018).
    [Crossref]
  21. Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.
  22. T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.
  23. E. Inaty, R. Raad, P. Fortier, and M. Maier, “Code division multiple access enabled dynamic bandwidth allocation (CDBA) scheme for EPON,” J. Opt. Commun. Netw. 4(3), 271–281 (2012).
    [Crossref]
  24. “IEEE Approved Draft Standard for Service Interoperability in Ethernet Passive Optical Network (SIEPON)”, IEEE P 1904.1/D3.1, p.1-886, December 2016
  25. E. Inaty, H. M. H. Shalaby, P. Fortier, and L. A. Rusch, “Multirate optical fast frequency hopping CDMA system using power control,” J. Lightwave Technol. 20(2), 166–177 (2002).
    [Crossref]

2019 (3)

2018 (4)

2017 (5)

2014 (1)

2012 (1)

2002 (1)

Abrao, T.

Attia, R.

H. Mrabet, I. Dayoub, and R. Attia, “Comparative study of 2D-OCDMA-WDM system performance in 40-Gb/s PON context,” IET Optoelectron. 11(4), 141–147 (2017).
[Crossref]

Bekkali, A.

Bjørnstad, S.

Chen, D.

Chung, H. S.

Cincotti, G.

N. Kataoka, G. Cincotti, X. Wang, N. Wada, and K Kitayama, “Recent progress of Optical CDMA Technologies,” IEEE/OSA, ACPCE Conf, 2010.

Dayoub, I.

H. Mrabet, I. Dayoub, and R. Attia, “Comparative study of 2D-OCDMA-WDM system performance in 40-Gb/s PON context,” IET Optoelectron. 11(4), 141–147 (2017).
[Crossref]

dos Santos, L.

Durand, F.

Ebrahimzadeh, A.

Eghbal, Morad

Morad Eghbal and Mehdi Shadaram, “Tandem Dual-Electrode Mach Zehnder Modulators generating W-Band signals for an OCDMA Radio-over-Fiber System,” IEEE Photonics Society Summer Topical Meeting Series (SUM) Conf, 2017.

Fortier, P.

Geetha, G.

R. Priyadharshini, G. Geetha, and M. Meenakshi, “Integration of OCDMA based NG-PON and Fi-Wi networks for wireless access,” IEEE/ICCSP, pp. 0967–0973, Apr. 2017.

Goedtel, A.

Guo, W.

Hadi, M.

Harstead, E.

Hisano, D.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

Hong, J.

G. W. Lu, J. Hong, H. Zhang, F. Qiu, and S. Yokoyama, “DAC-less PAM4 Transmitter using Electro-optic Polymer Dual-drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics,” IEEE/OSA CLEO Conf, 2019.

Houtsma, V.

Hu, W.

Hussain, S.

Hussain, S. B.

Inaty, E.

Ishimura, S.

Jafari, O.

O. Jafari, W. Shi, and S. LaRochelle, “Silicon Photonic Modulator Using Coupled Bragg Grating Resonators in a Mach-Zehnder structure,” IEEE/OSA CLEO Conf2019.

Kataoka, N.

N. Kataoka, “Full-duplex, 10 Gbps, asynchronous OCDMA system,” IEEE/ICTON Conf, 2010.

N. Kataoka, G. Cincotti, X. Wang, N. Wada, and K Kitayama, “Recent progress of Optical CDMA Technologies,” IEEE/OSA, ACPCE Conf, 2010.

Kawamura, T.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

Kitayama, K

N. Kataoka, G. Cincotti, X. Wang, N. Wada, and K Kitayama, “Recent progress of Optical CDMA Technologies,” IEEE/OSA, ACPCE Conf, 2010.

Kitayama, K.

Kodama, T.

Kuwano, S.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

LaRochelle, S.

O. Jafari, W. Shi, and S. LaRochelle, “Silicon Photonic Modulator Using Coupled Bragg Grating Resonators in a Mach-Zehnder structure,” IEEE/OSA CLEO Conf2019.

Lee, H. H.

Lu, G. W.

G. W. Lu, J. Hong, H. Zhang, F. Qiu, and S. Yokoyama, “DAC-less PAM4 Transmitter using Electro-optic Polymer Dual-drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics,” IEEE/OSA CLEO Conf, 2019.

Maier, M.

Matsoumoto, R.

Meenakshi, M.

R. Priyadharshini, G. Geetha, and M. Meenakshi, “Integration of OCDMA based NG-PON and Fi-Wi networks for wireless access,” IEEE/ICCSP, pp. 0967–0973, Apr. 2017.

Mikaeil, A. M.

Mrabet, H.

H. Mrabet, I. Dayoub, and R. Attia, “Comparative study of 2D-OCDMA-WDM system performance in 40-Gb/s PON context,” IET Optoelectron. 11(4), 141–147 (2017).
[Crossref]

Mukherjee, B.

Nakamura, H.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

Nakayama, Y.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

Nishimura, K.

Nomura, R.

Omichi, K.

Otaka, A.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

Pakravan, M. R.

Park, S.

Priyadharshini, R.

R. Priyadharshini, G. Geetha, and M. Meenakshi, “Integration of OCDMA based NG-PON and Fi-Wi networks for wireless access,” IEEE/ICCSP, pp. 0967–0973, Apr. 2017.

Qiu, F.

G. W. Lu, J. Hong, H. Zhang, F. Qiu, and S. Yokoyama, “DAC-less PAM4 Transmitter using Electro-optic Polymer Dual-drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics,” IEEE/OSA CLEO Conf, 2019.

Raad, R.

Raffaelli, C.

Rusch, L. A.

Shadaram, Mehdi

Morad Eghbal and Mehdi Shadaram, “Tandem Dual-Electrode Mach Zehnder Modulators generating W-Band signals for an OCDMA Radio-over-Fiber System,” IEEE Photonics Society Summer Topical Meeting Series (SUM) Conf, 2017.

Shalaby, H. M. H.

Shi, W.

O. Jafari, W. Shi, and S. LaRochelle, “Silicon Photonic Modulator Using Coupled Bragg Grating Resonators in a Mach-Zehnder structure,” IEEE/OSA CLEO Conf2019.

Shigematsu, S.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

Shimizu, S.

Sultan, A.

Suzuki, M.

Tanaka, K.

Tanaka, N.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

Tashiro, T.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

Terada, J.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

Tonini, F.

Tornatore, M.

Ujikawa, H.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

Uzawa, H.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

Veisllari, R.

Venn, D.

Wada, N.

Wang, L.

Wang, W.

Wang, X.

Xin, H.

Yokoyama, S.

G. W. Lu, J. Hong, H. Zhang, F. Qiu, and S. Yokoyama, “DAC-less PAM4 Transmitter using Electro-optic Polymer Dual-drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics,” IEEE/OSA CLEO Conf, 2019.

Yoshimoto, N.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

Zhang, H.

G. W. Lu, J. Hong, H. Zhang, F. Qiu, and S. Yokoyama, “DAC-less PAM4 Transmitter using Electro-optic Polymer Dual-drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics,” IEEE/OSA CLEO Conf, 2019.

IET Optoelectron. (1)

H. Mrabet, I. Dayoub, and R. Attia, “Comparative study of 2D-OCDMA-WDM system performance in 40-Gb/s PON context,” IET Optoelectron. 11(4), 141–147 (2017).
[Crossref]

J. Lightwave Technol. (5)

J. Opt. Commun. Netw. (9)

L. Wang, X. Wang, M. Tornatore, H. S. Chung, H. H. Lee, S. Park, and B. Mukherjee, “Dynamic bandwidth and wavelength allocation scheme for next-generation wavelength-agile EPON,” J. Opt. Commun. Netw. 9(3), B33–B42 (2017).
[Crossref]

E. Inaty, R. Raad, P. Fortier, and M. Maier, “Code division multiple access enabled dynamic bandwidth allocation (CDBA) scheme for EPON,” J. Opt. Commun. Netw. 4(3), 271–281 (2012).
[Crossref]

S. B. Hussain, W. Hu, H. Xin, and A. M. Mikaeil, “Low-latency dynamic wavelength and bandwidth allocation algorithm for NG-EPON,” J. Opt. Commun. Netw. 9(12), 1108–1115 (2017).
[Crossref]

E. Inaty and R. Raad, “CDMA-based dynamic power and bandwidth allocation (DPBA) scheme for multiclass EPON: a weighted fair queuing approach,” J. Opt. Commun. Netw. 10(2), 52–64 (2018).
[Crossref]

W. Wang, W. Guo, and W. Hu, “Dynamic wavelength and bandwidth allocation algorithms for mitigating frame reordering in NG-EPON,” J. Opt. Commun. Netw. 10(3), 220–228 (2018).
[Crossref]

S. Hussain, W. Hu, H. Xin, A. M. Mikaeil, and A. Sultan, “Flexible wavelength and dynamic bandwidth allocation for NG-EPONs,” J. Opt. Commun. Netw. 10(6), 643–652 (2018).
[Crossref]

L. dos Santos, F. Durand, A. Goedtel, and T. Abrao, “Auto-tuning PID distributed power control for next-generation passive optical networks,” J. Opt. Commun. Netw. 10(10), D110–D125 (2018).
[Crossref]

M. Maier and A. Ebrahimzadeh, “Towards Immersive Tactile Internet Experiences: Low-Latency FiWi Enhanced Mobile Networks With Edge Intelligence [Invited],” J. Opt. Commun. Netw. 11(4), B10–B25 (2019).
[Crossref]

S. Bjørnstad, R. Veisllari, D. Chen, F. Tonini, and C. Raffaelli, “Minimizing delay and packet delay variation in switched 5G transport networks,” J. Opt. Commun. Netw. 11(4), B49–B59 (2019).
[Crossref]

Other (10)

R. Priyadharshini, G. Geetha, and M. Meenakshi, “Integration of OCDMA based NG-PON and Fi-Wi networks for wireless access,” IEEE/ICCSP, pp. 0967–0973, Apr. 2017.

O. Jafari, W. Shi, and S. LaRochelle, “Silicon Photonic Modulator Using Coupled Bragg Grating Resonators in a Mach-Zehnder structure,” IEEE/OSA CLEO Conf2019.

G. W. Lu, J. Hong, H. Zhang, F. Qiu, and S. Yokoyama, “DAC-less PAM4 Transmitter using Electro-optic Polymer Dual-drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics,” IEEE/OSA CLEO Conf, 2019.

Morad Eghbal and Mehdi Shadaram, “Tandem Dual-Electrode Mach Zehnder Modulators generating W-Band signals for an OCDMA Radio-over-Fiber System,” IEEE Photonics Society Summer Topical Meeting Series (SUM) Conf, 2017.

N. Kataoka, “Full-duplex, 10 Gbps, asynchronous OCDMA system,” IEEE/ICTON Conf, 2010.

N. Kataoka, G. Cincotti, X. Wang, N. Wada, and K Kitayama, “Recent progress of Optical CDMA Technologies,” IEEE/OSA, ACPCE Conf, 2010.

K. Kitayama, “Rationale of OCDMA/OFDMA for NG-PON,” IEEE ICO ICIP Conf, 2011.

Y. Nakayama, H. Uzawa, D. Hisano, H. Ujikawa, H. Nakamura, J. Terada, and A. Otaka, “Efficient DWBA algorithm for TWDM-PON with mobile fronthaul in 5G networks,” IEEE GLOBECOM Conf., 2017.

T. Tashiro, S. Kuwano, J. Terada, T. Kawamura, N. Tanaka, S. Shigematsu, and N. Yoshimoto, “A novel DBA scheme for TDM-PON based mobile fronthaul,” OSA Optical Fiber Communication Conf., 2014.

“IEEE Approved Draft Standard for Service Interoperability in Ethernet Passive Optical Network (SIEPON)”, IEEE P 1904.1/D3.1, p.1-886, December 2016

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (12)

Fig. 1.
Fig. 1. CDBA timing diagram.
Fig. 2.
Fig. 2. FIFO-DBA timing diagram.
Fig. 3.
Fig. 3. RP-DBA timing diagram for active ONUs.
Fig. 4.
Fig. 4. Average delay of CDBA, FIFO-DBA and RP-DBA schemes versus offered traffic compared to that of DWBAs.
Fig. 5.
Fig. 5. Jitter of CDBA, FIFO-DBA and RP-DBA schemes versus offered traffic compared to that of DWBAs
Fig. 6.
Fig. 6. Packet drop ratio of CDBA, FIFO -CDBA and RP-DBA schemes versus offered traffic compared to that of DWBAs
Fig. 7.
Fig. 7. Average grant bandwidth per ONU of CDBA, FIFO-DBA and RP-DBA schemes versus offered traffic compared to that of DWBAs.
Fig. 8.
Fig. 8. The aggregate throughput of the network for CDBA, FIFO-DBA and RP-DBA schemes versus offered traffic compared to that of DWBAs
Fig. 9.
Fig. 9. Average grant utilization per ONU versus offered traffic for all schemes
Fig. 10.
Fig. 10. The throughput-delay characteristic of CDBA, FIFO-DBA and RP-DBA schemes compared to that of DWBAs.
Fig. 11.
Fig. 11. Jitter variations with respect to time for CDBA, FIFO-DBA and RP-DBA schemes compared to that of FF-DWBA.
Fig. 12.
Fig. 12. The probability density function (PDF) of the Jitter for CDBA, FIFO-DBA and RP-DBA schemes compared to that of DWBAs.

Tables (3)

Tables Icon

Table 1. FIFO-DBA scheduling table at every polling subcycle

Tables Icon

Table 2. RP-DBA scheduling table at every polling subcycle

Tables Icon

Table 3. simulation parameters

Equations (16)

Equations on this page are rendered with MathJax. Learn more.

Tu[n]=ti=i×TSubcycle
i=u+(n1)NK1,for n=1,2,3,
wu(n,n+1)={N/NKK2,u{uU:u+(n1)NiK{1,,r}}N/NKK1,u{uU:u+(n1)NiK{r+1,,K}}
r=N/NKK×KN
wu(n,n+1)=Tu[n+1](Tu[n]+Tsubcycle)
wu(n,n+1)=(u+nNKu+(n1)NK1)×Tsubcycle=(u+nNK+α(u+nNKNK+β)1)×Tsubcycle=(NK+(αβ)1)×Tsubcycle
Qu(s)=(Qu(s1)Grantu(s))+Tcycle(u)(s)λu/λuBB
p,m(u)=Pr[Qu(s)=m|Qu(s1)=]
p0,(u)=Pr(A=)=(Tcycle(u)(s)λu/λuBB)!eTcycle(u)(s)λu/λuBB
p,m(u)=Pr(A=Grantu(s)+m)=(Tcycle(u)(s)λu/λuBB)(Grantu(s)+m)(Grantu(s)+m)!eTcycle(u)(s)λu/λuBB
π(u)P(u)=π(u),q{0,,M}πq(u)=1
Q¯u=πQuT+Q1(u)+Q2(u)
d¯u=BQ¯uλu(sec)
du(s)=ΔBQu(s)λu
Jitteru=s=1S(du(s)d¯u)2/s=1S(du(s)d¯u)2SS
θu(s)=Grantu(s)/Grantu(s)Tcycle(u)(s)Tcycle(u)(s)(bits/sec)

Metrics