ZTE

ZTE Communications ›› 2010, Vol. 8 ›› Issue (1): 44-49.

• Special Topic • Previous Articles     Next Articles

Cooperative Communication Based on Spectrum Aggregation in LTE Further Evolution

Diao Xinxi,Xu Ling,Ma Zhifeng   

  1. Standard Development & Industrial Relation Department, Products and Marketing System of ZTE Corporation, Shenzhen 518004, P. R. China
  • Online:2010-03-25 Published:2020-02-26
  • About author:Diao Xinxi, PhD, is a wireless communication engineer at ZTE Corporation. He is engaged in the study of system evolution technologies. His research interests focus on spectrum aggregation, 4G wireless access network architecture characteristics and cooperation mechanism.

    Xu Ling is the director of the Wireless Branch of the Standard Development & Industrial Relation Department, ZTE Corporation. She is also the deputy group leader of CCSA-TC5-WG3. She is engaged in the study of TDD systems and OFDM-based wireless communication system technology and standardization. Her research interests focus on the evolution of wireless access network architecture, network Ad-hoc technology, CDMA1X/Wimax/LTE and further evolution technologies and their standardization.

    Ma Zhifeng, PhD, is a supervisor of wireless communication standards at ZTE Corporation. He is engaged in the study of TD-SCDMA and TD-LTE system evolution technologies and standardization, and his research interests focus on spectrum aggregation and system convergence technologies.
  • Supported by:
    This work was supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China under Grant No. 2009ZX03003.

PDF (PC)

Abstract: The implementation of wide band radio transmission may occur in two parallel ways: designing a new system with larger bandwidth, or constructing a cooperative system based on existing systems. The former is a spectrum aggregation scheme based on multi-carrier transmission within one system, while the latter fulfills spectrum aggregation based on multi-carrier transmission among systems. On the one hand, the advantage of the multi-carrier transmission scheme within a system and among systems is that the existing Radio Frequency (RF ) techniques and elements can be sufficiently utilized, so system costs can be decreased. On the other hand, spectrum aggregation among systems, especially among heterogeneous air -interfaces, can not only expand the basic bandwidth functions, but also fulfill efficient spectrum usage for Frequency Division Duplex (FDD ) system under the unbalanced Uplink/Downlink (UL/DL ) service scenario. It can also efficiently guard band usage between FDD and Time Division Duplex (TDD ) systems. Commercially, this has significant implications for operators.