ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
권호 표지
DOI QR코드

DOI QR Code

Adaptive Resource Allocation for Uplink Carrier Aggregation Scheme in LTE-A-Type Networks

  • Choi, Yonghoon (Department of Electrical Engineering, Stanford University) ;
  • Lee, Yonggyu (Department of Electrical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Chang, Kapseok (Advanced Communications Research Laboratory, ETRI, School of Engineering Science, Simon Fraser University)
  • Received : 2012.02.29
  • Accepted : 2012.04.06
  • Published : 2012.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

Carrier aggregation is an essential feature in the Long Term Evolution-Advanced (LTE-A) system, which allows the scalable expansion of the effective bandwidth to be delivered to user equipment (UE) through the concurrent use of radio resources across multiple component carriers (CCs). This system's optimal radio-resource use has received much attention under simultaneous access (SA) scenarios for multiple CCs (m-CCs). This letter establishes how many CCs a UE should simultaneously connect to maintain maximum uplink capacity. Under the m-CC LTE-A system, the spectral efficiency of the m-CC SA scheme ($m{\geq}2$) is compared with that of CC selection (CCS). Numerical results reveal that the 2-CC SA scheme outperforms CCS and performs almost equally to the m-CC SA scheme ($m{\geq}3$).

Keywords

References

  1. M. Iwamura et al., "Carrier Aggregation Framework in 3GPP LTE-Advanced," IEEE Commun. Mag., vol. 48, no. 8, Aug. 2010, pp. 60-67.
  2. 3GPP RP-M.100661, Revised Carrier Aggregation for LTE WID, June 2010.
  3. Rohde & Schwarz, Carrier Aggregation for IEEE 802.16m: Signal Generation and Analysis, Application Note, http://www2. rohde-schwarz.com/file_13435/1MA173_0e.pdf, Mar. 2010.
  4. E. Dahlman et al., 3G Evolution: HSPA and LTE for Mobile Broadband, Amsterdam: Elsevier Ltd., 2008.
  5. J. Sachs and P. Magnusson, "Assessment of the Access Selection Gain in Multi-Radio Access Networks," Eur. Trans. Telecommun., vol. 20, Apr. 2009, pp. 265-279. https://doi.org/10.1002/ett.1254
  6. G. Yuan et al., "Carrier Aggregation for LTE-Advanced Mobile Communication Systems," IEEE Commun. Mag., vol. 48, no. 2, Feb. 2010, pp. 88-93.
  7. K. Yagyu et al., "Investigation on Signaling Overhead for Mobility Management with Carrier Aggregation in LTE-Advanced," IEICE Trans. Commun., vol. E94-B, no. 12, Dec. 2011, pp. 3335-3345. https://doi.org/10.1587/transcom.E94.B.3335
  8. 3G Americas white paper. EDGE, HSPA, LTE - Broadband Innovation. Available at: http://www. 3gamericas.org
  9. C.Y. Wong et al., "Multiuser OFDM with Adaptive Subcarrier, Bit and Power Allocation," IEEE J. Select. Areas Commun., vol. 17, Oct. 1999, pp. 1747-1758. https://doi.org/10.1109/49.793310
  10. R. Jain, "Channel Models - A Tutorial," Proc. WiMAX Forum AATG, 2007.

Cited by

  1. 역률보상회로를 이용한 이동통신 중계기의 에너지 절감에 관한 연구 vol.18, pp.8, 2012, https://doi.org/10.6109/jkiice.2014.18.8.1854