Journal of Korea Multimedia Society (한국멀티미디어학회논문지)

Korea Multimedia Society (한국멀티미디어학회)
권호 표지
DOI QR코드

DOI QR Code

Interference Resolving Radio Resource Allocation Scheme in a TDD-OFDMA/FDD-CDMA Hierarchical Over lay Cellular System

  • Lee, Yeonwoo (Dept. of Inform. & Comm. Eng., Mokpo National Univ.) ;
  • Kim, Kyung-Ho (Dept. of Inform. & Comm. Eng., Mokpo National Univ.)
  • Received : 2013.04.01
  • Accepted : 2013.06.04
  • Published : 2013.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

In order to support a cell-independent traffic asymmetry, the conventional TDD system cannot avoid crossed time slot (CTS) interference. Moreover, the TDD/FDD hierarchical overlay cellular systems is taken into account as a generally accepted cell model in a heterogeneous radio environment. In this paper, we propose an interference resolving radio resource allocation technique in a TDD-OFDMA cellular system that overlays a FDD-CDMA cell. In our proposed scheme, we exploit under-used FDD-CDMA uplink resource by TDD mobile abiding by a region based time slot(TS) allocation which in turn mitigates CTS interference considerably. It is demonstrated that combined with under-used resource utilization scheme based on mobile's location, the proposed technique can reduce CTS interference considerably and support the asymmetric traffic in TDD system.

Keywords

References

  1. G. Jeong and W.S. Jeon, "CDMA/TDD System for Wireless Multimedia Services with Traffic Unbalance Between Uplink and Downlink," IEEE Journal on Selected Areas in Communications, Vol. 17, No. 5, pp. 939-946, 1999. https://doi.org/10.1109/49.768207
  2. Lili. Tang, "Performance Analysis of Mobile Communication in Picocell and Femtocell," Lecture Notes in Electrical Engineering, Vol. 225, No. 1, pp. 595-602, 2013. https://doi.org/10.1007/978-3-642-35470-0_73
  3. Sagari Shweta, Gautam Bhanage, and Dipankar Raychaudhuri, "Adaptive Geolocation based Interference Control for Hierarchical Cellular Network with Femtocells," Proc. Personal Indoor and Mobile Radio Communications, pp. 132-136, 2011.
  4. Hoang-Hiep Nguyen, Ngoc-Thai Pham, and Won-Joo Hwang, "Energy Efficient Base Station Operation in Heterogeneous Cellular Networks," Proc. the Korea Multimedia Society, pp. 158-159, 2012.
  5. H. Haas and G. Povey, "Capacity Analysis of A TDD Underlay Applicable to UMTS," Proc. Personal Indoor and Mobile Radio Communications, pp. 167-171, 1998.
  6. Recommendation ITU-R M.1225, Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000, 1997.
  7. Ju-Phil and Choi, "Performance Evaluation of AMC in Clustered OFDM System," Journal of Korea Multimedia Society, Vol. 8, No. 12, pp. 1623-1630, 2005.