FDD를 사용하는 영역에서는 LTE-FDD가 "4G" 무선 광대역 엑세스의 강력한 후보기술의 하나로 여겨지는 한편, 최근 LTE-TDD가 TD-SCDMA의 진화 경로 및 일부 경우에는 WiMAX-TDD에 대한 진화 경로로서 떠오르고 있다. 본 논문에서는 LTE-TDD에 관하여 다음의 두 가지 조합의 듀얼모드 구현에 대한 실현가능성을 분석한다: 듀얼모드 LTE-FDD/TDD 및 듀얼모드 WiMAX-TDD/LTE-TDD. LTE-FDD 및 LTE-TDD 사이의 시스템 파라미터, 용어사용 및 프레임 구조에서의 공통성에 따라 듀얼모드 LTE-FDD/TDD가 비용면에서 효율적으로 구현이 가능함을 보인다. 또한, 스케줄링 알고리즘, 제어 메카니즘 및 지원하는 스펙트럼 대역에서의 공통성에 따라 듀얼모드 WiMAX-TDD/LTE-TDD 역시 비용면에서 효율적으로 구현이 가능함을 보인다. 시스템 파라미터 및 프레임 구조에서의 공통성은 칩을 구현하는데 매우 중요한 부분이며, 알고리즘 및 제어 메카니즘에서의 공통성은 구현된 칩이 얼마나 잘 동작하느냐에 매우 중요한 부분임을 주목한다.
FDD를 사용하는 영역에서는 LTE-FDD가 "4G" 무선 광대역 엑세스의 강력한 후보기술의 하나로 여겨지는 한편, 최근 LTE-TDD가 TD-SCDMA의 진화 경로 및 일부 경우에는 WiMAX-TDD에 대한 진화 경로로서 떠오르고 있다. 본 논문에서는 LTE-TDD에 관하여 다음의 두 가지 조합의 듀얼모드 구현에 대한 실현가능성을 분석한다: 듀얼모드 LTE-FDD/TDD 및 듀얼모드 WiMAX-TDD/LTE-TDD. LTE-FDD 및 LTE-TDD 사이의 시스템 파라미터, 용어사용 및 프레임 구조에서의 공통성에 따라 듀얼모드 LTE-FDD/TDD가 비용면에서 효율적으로 구현이 가능함을 보인다. 또한, 스케줄링 알고리즘, 제어 메카니즘 및 지원하는 스펙트럼 대역에서의 공통성에 따라 듀얼모드 WiMAX-TDD/LTE-TDD 역시 비용면에서 효율적으로 구현이 가능함을 보인다. 시스템 파라미터 및 프레임 구조에서의 공통성은 칩을 구현하는데 매우 중요한 부분이며, 알고리즘 및 제어 메카니즘에서의 공통성은 구현된 칩이 얼마나 잘 동작하느냐에 매우 중요한 부분임을 주목한다.
While Long Term Evolution-Frequency Division Duplexing (LTE-FDD) is regarded as one of the strong candidates for "4G" wireless broadband access in FDD field, LTE-Time Division Duplexing (TDD) is emerging as one possible migration path for WiMAX-TDD in some cases as well as the migration path for Tim...
While Long Term Evolution-Frequency Division Duplexing (LTE-FDD) is regarded as one of the strong candidates for "4G" wireless broadband access in FDD field, LTE-Time Division Duplexing (TDD) is emerging as one possible migration path for WiMAX-TDD in some cases as well as the migration path for Time Division-Synchronous Code Division Multiple Access (TD-SCDMA). In this paper, we analyze the feasibility of dual mode with LTE-TDD in two combinations: dual mode LTE-FDD/TDD and dual mode Worldwide Interoperability for Microwave Access (WiMAX)-TDD/LTE-TDD. Thanks to the commonality in numerology, terminology, and frame structure between LTE-FDD and LTE-TDD, dual mode LTE-FDD/TDD looks feasible in a cost-effective manner. Thanks to the commonality in scheduling algorithm, control mechanism, and supported spectrum bands, it is shown that dual mode WiMAX-TDD/LTE-TDD looks feasible as well. It should be also noted that the commonality in numerology and frame structure is critical for building a chip while the commonality in algorithms and control mechanisms is critical to make it work.
While Long Term Evolution-Frequency Division Duplexing (LTE-FDD) is regarded as one of the strong candidates for "4G" wireless broadband access in FDD field, LTE-Time Division Duplexing (TDD) is emerging as one possible migration path for WiMAX-TDD in some cases as well as the migration path for Time Division-Synchronous Code Division Multiple Access (TD-SCDMA). In this paper, we analyze the feasibility of dual mode with LTE-TDD in two combinations: dual mode LTE-FDD/TDD and dual mode Worldwide Interoperability for Microwave Access (WiMAX)-TDD/LTE-TDD. Thanks to the commonality in numerology, terminology, and frame structure between LTE-FDD and LTE-TDD, dual mode LTE-FDD/TDD looks feasible in a cost-effective manner. Thanks to the commonality in scheduling algorithm, control mechanism, and supported spectrum bands, it is shown that dual mode WiMAX-TDD/LTE-TDD looks feasible as well. It should be also noted that the commonality in numerology and frame structure is critical for building a chip while the commonality in algorithms and control mechanisms is critical to make it work.
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제안 방법
In this paper, we analyzed the feasibility of dual mode LTE-FDD/TDD and dual mode WiMAX-TDD/LTE-TDD, respectively. Given the fact that LTE-FDD and LTE-TDD are developed in the same SDO, 3GPP, it shares a lot in common including numerology, terminology, frame structure, network architecture, etc.
In order to ensure the smooth migration from WiMAX-TDD to LTE-TDD, the dual mode WiMAX-TDD/LTE-TDD is required. Therefore, in this paper, we analyze the feasibility of dual mode with LTE-TDD in two combinations: dual mode LTE-FDD/TDD and dual mode WiMAX-TDD/LTE-TDD. Regarding dual mode among these systems, there has not been extensive analysis in the industry on the feasibility throughout the entire system including baseband implementation, RF implementation, scheduling and other control mechanism, and network-side aspects.
성능/효과
Furthermore, it is also shown that LTE-TDD’s EPC functions and WiMAX’s network functions are similar to each other, so these can be built together by maximizing the common/sharing portion. Through the extensive analysis in this paper, it is shown that both of dual mode LTE-FDD/TDD and dual mode WiMAX-TDD/LTE-TDD look feasible in a cost-effective manner. It should be also noted that the commonality in numerology and frame structure is critical for building the chip, but the commonality in algorithms and control mechanisms is critical to make it work.
참고문헌 (22)
ITU-R Working Party 5D (WP 5D) - IMT systems: http://www.itu.int/ITU-R/index.asp?categorystudy-groups&rlinkrwp5d&langen
3GPP TS 25.211, Physical channels and mapping of transport channels onto physical channels (FDD), V9.1.0, Dec. 2009
3GPP TS 25.221, Physical channels and mapping of transport channels onto physical channels (TDD), V9.2.1, July 2010
3GPP TS 36.211, Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation, V9.1.0, March 2010
3GPP TS 36.101, Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception, V9.4.0, June 2010
IEEE Std 802.16e-2005, IEEE standard for local and metropolitan area networks, Part 16: Air interface for fixed and mobile broadband wireless access systems, Feb. 2006
IEEE Std 802.16-2009, IEEE standard for local and metropolitan area networks, Part 16: Air interface for broadband wireless access systems, May 2009
IEEE P802.16m/D7, Draft amendment to IEEE standard for local and metropolitan area networks, Part 16: Air interface for broadband wireless access systems, July 2010
WiMAX forum, WiMAX forumTM mobile system profile: Release 1 - IMT-2000 edition, July 2009
WiMAX forum, WiMAX forumTM mobile certification profile, April 2006
WiMAX forum, BOD Approved Mobile Certification Profiles as of February 2009: http://members.wimaxforum.org/kws/certification
Hyung G. Myung, Junsung Lim, and David J. Goodman, "Single carrier FDMA for uplink wireless transmission," IEEE Vehicular Technol. Magazine, Sep. 2006.
David Falconer, et. al., "Frequency domain equalization for single-carrier broadband wireless systems," IEEE Commun. Magazine, April 2002.
Chen-Hung Lin, Chun-Yu Chen, and An-Yeu Wu, "Area-efficient scalable MAP processor design for high-throughput multistandard convolutional Turbo decoding," IEEE Trans. On VLSI Systems, Oct. 2009
Ji-Hoon Kim and In-Cheol Park, "A unified parallel radix-4 Turbo decoder for mobile WiMAX and 3GPP-LTE," in Proceeding of IEEE Custom Integrated Circuits Conference (CICC) 2009, 2009.
Di Wu, et. al., "VLSI implementation of a multi-standard MIMO symbol detector for 3GPP LTE and WiMAX," in Proceeding of IEEE Wireless Telecommunications Symposium (WTS) 2010, 2010.
YH Chow, et. al., "A 29dBm linear power amplifier module for IEEE 802.16e (Wimax) and LTE applications using E-mode pHEMT technology," in Proceeding of IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) 2009, 2009.
V. Krishnamurthy, et. al., "SiGe power amplifier ICs for 4G (WIMAX and LTE) mobile and nomadic applications," in Proceeding of IEEE Radio-Frequency Integrated Circuits Symposium (RFIC) 2010, 2010.
Youn Suk Jeong, et. al., "Internal mobile antenna for LTE/GSM850/GSM900/PCS1900/WiMAX/WL AN," in Proceeding of IEEE Radio and Wireless Symposium (RWS) 2010, 2010.
S. Rodriguez, A. Rusu, and M. Ismail, "WiMAX/LTE receiver front-end in 90nm CMOS," in Proceeding of IEEE ISCAS 2009, 2009.
Angeliki Leonida, Orhan Hazar Mutgan, and Ana Rusu, "A digitally calibrated CT quadrature bandpass $\Sigma\Delta$ ADC for Wimax/LTE," in Proceeding of IEEE ISSCS 2009, 2009.
K.S. Keshava Murthy, "NextGen wireless access gateway: Analysis of combining WiMAX and LTE gateway functions," in Proceeding of IEEE IMSAA 2008, 2008
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