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A dynamic CRE and ABS scheme for enhancing network capacity in LTE-advanced heterogeneous networks

  • Chung-Nan Lee
  • Jun-Hong Lin
  • Chih-Feng Wu
  • Ming-Feng Lee
  • Fu-Ming Yeh
Article
  • 37 Downloads

Abstract

With the ever-growing popularity of wireless multimedia services, wireless network base stations are increasingly likely to overload in high population density areas. An economical means exists for operators to establish more picocells in order to reduce the user traffic load on base stations and increase system capacity; however, inter-cell interference is a challenge in such heterogeneous networks. This study proposes a novel scheme that integrates dynamic cell range expansion (CRE) and dynamic almost blank subframe (ABS) schemes based on 3GPP R10 eICIC. The proposed scheme can automatically adjust the CRE bias value according to the cell traffic load, thereby ensuring that users have access to sufficient resources to transmit data when they are offloaded to a smaller cell. Furthermore, the proposed ABS scheme can determine the ABS ratio that yields the highest system capacity. The proposed CRE scheme ensures that offloaded users always have access to sufficient resources. The proposed CRE and ABS scheme can improve network system capacity by more than 13.9% of 3GPP R10 and 11.7% of the competing algorithm.

Keywords

HetNet Interference eICIC CRE ABS 

Notes

Acknowledgements

This research has been funded in part by Ministry of Science and Technology, Taiwan, under the Grant MOST 105-2221-E-110-010-.

References

  1. 1.
    Rathi, S., Malik, N., Chahal, N., & Malik, S. (2014). Throughput for TDD and FDD 4G LTE systems. International Journal of Innovative Technology and Exploring Engineering (IJITEE), 3(12), 73–77.Google Scholar
  2. 2.
    3GPP TS 36.213. (2012). Evolved universal terrestrial radio access (E-UTRA) physical layer procedures. V.10.4.0.Google Scholar
  3. 3.
    3GPP TS 36.221. (2014). Evolved universal terrestrial radio access (E-UTRA); medium access control (MAC) protocol specification. V.10.10.0.Google Scholar
  4. 4.
    3GPP TS 36.300. (2013). Evolved universal terrestrial radio access (E-UTRA), evolved universal terrestrial radio access network (E-UTRAN). V.10.11.0.Google Scholar
  5. 5.
    Bedekar, A., & Agrawal, R. (2013). Optimal muting and load balancing for eICIC. In 11th International Symposium on Modeling & Optimization in Mobile, Ad Hoc & Wireless Networks (WiOpt 2013) (pp. 280–287).Google Scholar
  6. 6.
    Jiang, L., & Lei, M. (2012). CQI adjustment for eICIC scheme in heterogeneous networks. In Personal indoor and mobile radio communications (PIMRC 2012) (pp. 471–476).Google Scholar
  7. 7.
    Li, Y., Cao, B., & Wang, C. (2016). Handover schemes in heterogeneous LTE networks: Challenges and opportunities. IEEE Wireless Communications, 23(2), 112–117.CrossRefGoogle Scholar
  8. 8.
    Oh, J., & Han, Y. (2012). Cell selection for range expansion with almost blank subframe in heterogeneous networks. In Personal indoor and mobile radio communications (PIMRC 2012) (pp. 653–657).Google Scholar
  9. 9.
    Yi, W., & Hu, Y. (2015). Distributed CoMP transmission for cell range expansion with almost blank subframe in downlink heterogeneous networks. In International conference on intelligent computing and internet of things (ICIT) (pp. 127–130).Google Scholar
  10. 10.
    Lu, S. H., Lai, W. P., & Wang, L. C. (2014). Time domain coordination for inter-cell interference reduction in LTE hierarchical cellular systems. QSHINE, 2014, 51–55.Google Scholar
  11. 11.
    Bembe, M., Kim, J., & Han, Y. (2013). Available bandwidth-aware cell selection for expanded regions of small cells adopting ABS. In Proceedings 2013 international conference on ICT convergence (pp. 632–636).Google Scholar
  12. 12.
    Kenta, O., Taku, N., & Chiharu, Y. (2011). Picocell range expansion with interference mitigation toward LTE-advanced heterogeneous networks. In IEEE international conference on communications workshops (ICC), 5–9 June 2011.Google Scholar
  13. 13.
    Kikuchi, K., & Otsuka, H. (2013). Parameter optimization for adaptive control CRE in HetNet. In IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2013), 8–11 September 2013 (pp. 3334–3338).Google Scholar
  14. 14.
    Norihiro, N., Sho, N., Satoshi, S., Yukihiko, O., & Hiroyuki, O. (2016). Adaptive control CRE technique for eICIC in HetNet. In 2016 eighth international conference on ubiquitous and future networks (ICUFN), 5–8 July 2016.Google Scholar
  15. 15.
    Bhuvaneswari, P. T. V., Indu, S., Lathiffa Shifana, N., et al. (2015). An analysis on cell range expansion in 4G LTE networks. In 2015 3rd international conference on signal processing, communication and networking (ICSCN 2015), 2015.Google Scholar
  16. 16.
    Chafekar, D., Anil Kumar, V. S., Marathe, M. V., Parthasarathy, S., & Srinivasan, A. (2011). Capacity of wireless networks under SINR interference constraints. Wireless Networks, 17(7), 1605–1624.CrossRefGoogle Scholar
  17. 17.
    Wei, N., Pokhariyal, A., Rom, C., Priyanto, B. E., Frederiksen, F., Rosa, C., Sorensen, T. B., Kolding, T. E., & Mogensen, P. E. (2006). Baseline E-UTRA downlink spectral efficiency evaluation. In IEEE vehicular technology conference (VTC 2006), 2006.Google Scholar
  18. 18.
    Guvenc, I., Jeong, M.-R., Demirdogen, I., Kecicioglu, B., & Watanabe, F. (2011). Range expansion and inter-cell interference coordination (ICIC) for picocell networks. In Vehicular technology conference (VTC Fall), 2011.Google Scholar
  19. 19.
    Al-Rawi, M. (2012). A dynamic approach for cell range expansion in interference coordinated LTE-advanced heterogeneous networks. In IEEE international conference on communication system (ICCS) (pp. 21–23).Google Scholar
  20. 20.
    Mogensen, P., & Na, W. (2007). LTE capacity compared to the shannon bound. In IEEE vehicular technology conference (VTC2007-Spring) (pp. 1234–1238).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Computer Science and EngineeringNational Sun Yat-sen UniversityKaohsiungTaiwan
  2. 2.Broadband Wireless DepartmentGemtek Technology Co., Ltd.HsinchuTaiwan

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