CROSS-CARRIER SCHEDULING METHOD AND APPARATUS IN NEXT-GENERATION MOBILE COMMUNICATION SYSTEM

Smart overview of the Invention

Overview: The patent application introduces a method and apparatus for cross-carrier scheduling in next-generation mobile communication systems. It focuses on managing bandwidth parts (BWP) using secondary cells (SCells) and primary cells (PCells) in a wireless network. The method involves receiving configuration information for an SCell, identifying the presence of a carrier indicator field (CIF), and using this information to perform BWP switching based on downlink control information.

Technical Background: As mobile communication systems evolve towards 5G and beyond, there is an increasing need for efficient data handling across different frequency bands. The patent addresses challenges in managing radio wave propagation and data transmission distances by implementing techniques like beamforming, MIMO, and advanced coding modulation. These innovations aim to enhance system network performance, especially in ultra-dense network environments.

Methodology: The method involves a terminal receiving configuration information for an SCell and determining if a CIF is present. If so, the terminal receives downlink control information for other cells via the SCell, facilitating BWP switching. Additionally, the method includes handling scenarios where CIF is absent in a PCell, enabling BWP switching using information from the SCell. A BWP deactivation timer is utilized to manage the switch back to default BWPs.

Implementation Details: The terminal's controller manages the reception and identification of CIF presence, downlink control information processing, and BWP switching. It also handles BWP deactivation timing, ensuring efficient resource allocation. The base station similarly transmits configuration and control information, supporting BWP switching across cells. The method optimizes communication by skipping unnecessary timer activations and using specific control fields for carrier and resource identification.

Illustrative Diagrams: The application includes several diagrams illustrating the structure and operation of the proposed system. These diagrams depict the radio protocol structure, scenarios for applying BWPs, and examples of cross-carrier scheduling. They provide visual guidance on how the method is implemented in real-world scenarios, enhancing understanding of the patent's technical aspects.