Terminal Component Carrier Control via Segmented DCI
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Solution Overview
Problem
In the context of 5G and beyond wireless communication systems, existing terminals face challenges in efficiently managing and controlling a large number of component carriers (CCs), which affects the flexibility and resource allocation of communication channels.
Innovation Solution
A terminal configuration that utilizes a communication unit to execute data communication across multiple component carriers, with a controller managing communication via DCI received on a predetermined CC, allowing for flexible control and resource allocation across multiple CCs, thereby improving communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of component carriers is increased to expand frequency band usage, then communication capacity and frequency utilization are improved, but control complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the control information for multiple component carriers by introducing a first CC and a second CC, where the first CC carries downlink control information and the second CC carries uplink control information. This segmentation allows independent optimization of downlink and uplink control mechanisms, reducing overall control complexity while maintaining the ability to manage multiple carriers for expanded communication capacity.
Solution Approach 2:
The patent implements a universal control mechanism where the first component carrier serves multiple functions: it carries downlink control information for the second component carrier, and its physical downlink shared channel can be configured to be common for both CCs. This multi-functionality reduces the total number of separate control channels needed, thereby reducing control complexity while maintaining support for multiple component carriers.
2Productivity
If multiple component carriers are used to increase frequency band utilization, then data communication capacity is improved, but HARQ-ACK resource consumption increases
Solution Approach 1:
The patent merges the HARQ-ACK resource allocation by configuring the first component carrier's physical downlink shared channel as common for both the first and second component carriers. This merging allows a single HARQ-ACK resource to serve multiple component carriers, significantly reducing the total number of HARQ-ACK resources needed while maintaining the ability to communicate across multiple carriers for increased data capacity.
Solution Approach 2:
The first component carrier is designed with multi-functionality, serving as both a regular data carrier and as a carrier that provides common downlink control information and shared HARQ-ACK resources for the second component carrier. This universal design allows efficient resource utilization across multiple carriers without proportionally increasing HARQ-ACK resource consumption.
Data Source
AI summary
The terminal includes a communication unit that executes data communication via a plurality of component carriers, and the receiving unit executes predetermined communication that is communication of a transport block across the plurality of component carriers.