Downlink Control Channel Coordination With Multi-TCI Beam Configuration
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently providing services in mobile communication systems, particularly in ensuring coverage and reliability for diverse services such as enhanced mobile broadband, massive machine-type communication, and ultra-reliability low-latency communication in 5G networks.
Innovation Solution
A method and device for transmitting downlink control channels in a wireless communication system that involves configuring transmission configuration indicators (TCIs) and control channel resources, allowing for efficient beam management and synchronization between base stations and terminals, thereby enhancing service coverage and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple base stations transmit the same control information through cooperative communication, then the coverage and reliability of downlink control channels are improved, but the complexity of control information configuration and management increases
Solution Approach 1:
The control information is segmented into multiple transmissions from different base stations, each transmitting a portion or duplicate of the control information. This segmentation allows the terminal to receive control information through multiple paths, improving reliability while managing complexity through structured division of transmission tasks.
Solution Approach 2:
The terminal is pre-configured with information about multiple control channel resources and search spaces before actual control information transmission. This preliminary configuration enables the terminal to efficiently process cooperative transmissions without real-time complexity, as the framework for handling multiple base station transmissions is established in advance.
2Adaptability or versatility
If multiple control channel resources and search spaces are configured for cooperative communication, then the adaptability and coverage are improved, but the device complexity and processing overhead increase
Solution Approach 1:
The control channel configuration framework is designed to be universal, supporting both single-base station and multi-base station cooperative communication scenarios. The same configuration structures (control resource sets, search spaces) serve multiple functions: they can be used for individual base station transmissions or coordinated cooperative transmissions, reducing the need for separate configuration mechanisms.
Solution Approach 2:
The system dynamically selects and activates appropriate control channel resources and search spaces based on the actual communication scenario. When cooperative communication is needed, the terminal activates the configured multi-resource framework; otherwise, it uses standard single-resource configurations. This dynamic activation manages complexity by only engaging the full cooperative framework when necessary.
Data Source
AI summary
The present disclosure relates to a communication technique that merges IoT technology with a 5G communication system for supporting higher data transmission rates than 4G systems, and a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present disclosure discloses a method for improving the reliability of a control channel in a wireless communication system. Specifically, a method for a base station in a wireless communication system is characterized in that: control channel configuration information including a plurality of pieces of transmission configuration indicator (TCI) information is transmitted to a terminal; downlink control information for scheduling downlink data is transmitted to the terminal on a plurality of downlink control channels according to a plurality of TCIs; and the downlink data is transmitted to the terminal.