The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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LTE-Advanced CA Features in 3GPP REL-12 and its Future

LTE-Advanced CA 기술 특징 및 진화 방향

  • Received : 2014.07.11
  • Accepted : 2014.08.29
  • Published : 2014.09.30
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Abstract

This paper investigates the standard features of Carrier aggregation (CA), the related UE RF requirements in 3GPP release 12 and estimated CA evolution in future. The main CA feature of 3GPP release 12 in WG4 perspectives includes 2Uplink(UL) CA, 3Downlink(DL) CA and TDD-FDD CA. To support these features in UE, UE-to-UE coexistence problem and RF requirements generated by unwanted emissions such as inter-modulation and harmonics are analyzed. Also, future CA technology such as LTE in unlicensed bands is described.

본 논문은 3GPP REL-12 에서 논의하는 반송파 집성(Carrier aggregation, CA) 기술의 표준 동향, 이를 지원하기 위한 단말요구 사항 정의, 그리고 이를 바탕으로 예측한 향후 기술 발전의 방향에 관한 것이다. 이는 REL-12에서 논의되는 상향 링크(Uplink, UL)에서의 2UL CA, 하향 링크(Downlink, DL)에서 3개의 반송파를 집성하는 3DL CA, TDD와 FDD를 결합하는 TDD-FDD CA 등이 포함되며, 또한 단말 RF 단에서 필요한 공존 이슈, 대역외 방사 이슈를 비롯한 여러 RF 요구사항을 분석 및 실험 결과들을 포함한다. 또한 CA 진화의 한 축인 비면허 대역과 LTE 운용 주파수 대역과의 반송파 집성기술인 LTE-U를 포함한 CA 진화 방향에 대해서도 기술한다.

Keywords

References

  1. 3GPP Techinical Specification, 36.211, E-UTRA physical channels and modulation, v10.7.0, 2013.
  2. 3GPP Technical Specification, 36.212, E-UTRA multiplexing and channel coding, v10.8.0, 2013.
  3. 3GPP Technical Specification, 36.213, E-UTRA physical layer procedure, v10.12.0, 2013.
  4. 3GPP Technical Specification, 36.214, E-UTRA physical layer measurement, v10.1.0, 2013.
  5. 3GPP Technical Specification, 36.101, User Equipment (UE) radio transmission and reception, v10.15.0, 2014.
  6. S. Bassam, W. Chen, M. Helaoui, and F. Ghannouchi, "Transmitter architecture for CA: Carrier aggregation in LTE-advanced systems," IEEE Microwave Mag., vol. 14, no. 5, pp. 78-86, Jul.-Aug. 2013. https://doi.org/10.1109/MMM.2013.2259399
  7. C. S. Park and L. Sundstrom, "Carrier aggregation for LTE-advanced: Design challenges of terminals," IEEE Commun. Mag., vol. 51, no. 12, pp. 76-84, Dec. 2013.
  8. 3GPP Technical Report, 36.850, Inter-band carrier aggregation, v11.1.0, 2013.
  9. 3GPP Technical Report, 36.860, LTE-A dual uplink inter-band Carrier aggregation, v0.9.0, 2014.
  10. 3GPP R4-143227, TP for self-desense analysis for CA_5A-7A UE, 3GPP RAN WG4 #71, May 2014.
  11. 3GPP R4-144031, WF on 2UL inter-band CA MSD test configurations, 3GPP RAN WG4 #71, May 2014.
  12. 3GPP Technical Report, 36.853, LTE-A 3 band carrier aggregation with single uplink, v1.0.0, 2014.
  13. 3GPP R4-144067, Way forward on 3DL CA finalization, 3GPP RAN WG4 #71, May 2014.
  14. 3GPP RP-130888, New WI: LTE TDD - FDD joint operation, 3GPP RAN Plenary #60, Jun. 2013.
  15. 3GPP R4-142023, TDD-FDD WI applicability to 2 UL and 3 DL features in REL-12 time frame, 3GPP RAN WG4 #70BIS, March, 2014.
  16. 3GPP R4-141243, Work plan for LTE TDD-FDD joint operation including Carrier Aggregation, 3GPP RAN WG4 #70, Feb. 2014.
  17. 3GPP Technical Report, 36.851, E-UTRA Inter-band carrier aggregation, v0.12.0, 2014.
  18. 3GPP R4-144051, Introduction of CA Band 8 and Band 40 to TS 36.101, 3GPP RAN WG4 #71, May 2014.
  19. 3GPP R4-144163, LTE Advanced 4 Band Carrier Aggregation (4DL/1UL) of Band 5, Band 30, Band 2, Band 2, 3GPP RAN WG4 #72, Aug. 2014.
  20. 3GPP R4-145497, Introduction of CA B1_B42_ B42 into TS 36.101, 3GPP RAN WG4 #72, Aug. 2014.
  21. 3GPP RWS-140029, LTE-U workshop chairman summary, 3GPP workshop on LTE-Unlicensed spectrum, Jun. 2014.
  22. 3GPP RWS-140008, Extending the benefits of LTE to unlicensed spectrum, 3GPP workshop on LTE-Unlicensed spectrum, Jun. 2014
  23. 3GPP Techinical Specification, 36.211, E-UTRA physical channels and modulation, v12.2.0, 2014.
  24. 3GPP Technical Specification, 36.212, E-UTRA multiplexing and channel coding, v12.1.0, 2014
  25. 3GPP Technical Specification, 36.213, E-UTRA physical layer procedure, v12.2.0, 2014.
  26. 3GPP Technical Specification, 36.214, E-UTRA physical layer measurement, v11.1.0, 2012.
  27. 3GPP Technical Specification, 36.101, User equipment (UE) radio transmission and reception, v12.4.0, 2014.
  28. 3GPP Technical Specification, 36.306, User equipment (UE) radio access capabilities, v12.1.0, 2014.