Uplink Control Information Transmission in 5G Network Coordination
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a challenge in efficiently transmitting uplink control information to multiple transmission points/panels/beams for network coordination, which affects the speed and reliability of data transmission.
Innovation Solution
A method where a terminal receives configuration information and downlink control information from a base station, including repetition numbers and transmission timings for HARQ feedback, and transmits HARQ feedback in multiple slots, with a negatively acknowledged slot determined based on the indicated timing, optimizing the timing for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ feedback is transmitted to multiple transmission points/panels/beams sequentially, then each transmission point receives the feedback, but the time required for transmission increases
Solution Approach 1:
The patent combines multiple HARQ feedback transmissions into a single unified transmission. The terminal generates one HARQ feedback message that contains acknowledgment information for multiple transport blocks received from different transmission points, panels, or beams, and transmits this consolidated feedback through a single uplink resource, thereby reducing transmission time while ensuring all receivers get the necessary feedback
Solution Approach 2:
The patent segments the HARQ feedback information into different codebooks (e.g., first codebook for first transmission point, second codebook for second transmission point) while transmitting them together in a single uplink message. This segmentation allows each transmission point to extract its relevant feedback from the unified transmission, resolving the contradiction between comprehensive feedback delivery and time efficiency
2Measurement precision
If the terminal waits for all downlink transmissions before sending HARQ feedback, then feedback accuracy is improved, but transmission delay increases
Solution Approach 1:
The patent enables the terminal to prepare and transmit HARQ feedback based on downlink transmissions that have been received up to the feedback transmission timing, without waiting for all possible downlink transmissions to complete. The terminal can generate feedback for transport blocks received before the feedback deadline, achieving timely feedback while maintaining accuracy for received transmissions
Solution Approach 2:
The patent implements dynamic HARQ feedback timing where the terminal determines feedback transmission slots based on configured timing relationships and actual reception status. The feedback timing adapts to the actual downlink transmission schedule, allowing the terminal to send feedback as soon as the necessary information is available rather than waiting for a fixed later time, thus reducing delay while maintaining accuracy
Data Source
AI summary
The disclosure relates to a communication technique and a system for integrating a 5G communication system with IoT technology to support a higher data transmission rate after a 4G system. The disclosure may be applied to intelligent services, based on 5G communication technology and IoT-related technologies (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, etc.).