Multi-Carrier Uplink Transmission for Reduced Control Overhead
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Solution Overview
Problem
The challenge of improving spectrum bandwidth utilization in 5G communication networks, particularly for services requiring high user-experienced rates and ultra-reliable low-latency communication, is not adequately addressed by existing technologies.
Innovation Solution
An uplink transmission method that utilizes multiple uplink carriers, indicated by first indication information, allowing for reduced control signaling overheads and efficient resource allocation, including precoding and power control across these carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple uplink carriers are used to increase uplink capacity, then spectrum bandwidth utilization is improved, but control signaling overheads increase
Solution Approach 1:
The patent merges the indication of multiple uplink carriers into a single downlink control information (DCI) message. Instead of sending separate DCI for each carrier, the network device indicates multiple uplink carriers and their corresponding resources in one DCI, reducing control signaling overhead while enabling multi-carrier uplink transmission
Solution Approach 2:
The patent makes the first indication information universal by designing it to indicate multiple uplink carriers simultaneously. This single indication mechanism serves multiple functions: it identifies which carriers to use, allocates resources on each carrier, and provides precoding information, thereby reducing the need for multiple separate control signals
2Productivity
If multiple uplink carriers are used to increase uplink capacity, then spectrum bandwidth utilization is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple carrier indications and resource allocations into a single DCI structure. The terminal device receives one consolidated indication message that contains all necessary information for multi-carrier transmission, simplifying the device's processing requirements compared to handling multiple separate indications
Solution Approach 2:
The patent segments the resource allocation within the single DCI by providing separate resource indications for each uplink carrier. This allows the terminal device to process each carrier's resources independently while receiving a unified control message, reducing overall device complexity
Data Source
AI summary
An uplink transmission method and a communication apparatus. A terminal device receives first indication information indicating at least two uplink carriers to effectively reduce control signaling overheads. The terminal device sends uplink transmission on the at least two uplink carriers based on the first indication information. The uplink transmission is sent on the at least two uplink carriers in response to control signaling overheads being reduced. The use of the at least two uplink carriers increases an uplink capacity.