Uplink Channel Timing Offset Control for Wireless Communication
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Solution Overview
Problem
Current mobile communication systems face challenges in supporting high-speed data services due to resource shortages and increased user demands for higher transfer rates, larger connection device capacities, very low end-to-end latency, and high energy efficiency, necessitating advanced techniques such as small cell enhancement, dual connectivity, and non-orthogonal multiple access.
Innovation Solution
A method for transmitting an uplink channel by user equipment (UE) in a wireless communication system, considering timing offsets for CSI reports and uplink data transmissions, which are indicated using the same downlink control information, allowing for secure computation time and reduced blind decoding overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate downlink control information fields are used for indicating timing offsets of CSI reports and uplink data, then the timing can be accurately controlled, but the UE's blind decoding overhead increases
Solution Approach 1:
The patent combines the timing offset indication for CSI reports and uplink data into a single downlink control information field. Instead of using separate fields for CSI timing offset and uplink data timing offset, the invention uses one unified field that provides timing offset information for both types of transmissions, thereby reducing the number of blind decoding operations the UE must perform while maintaining accurate timing control.
Solution Approach 2:
The downlink control information field is designed to serve multiple functions simultaneously. It provides timing offset indication for both CSI reports and uplink data transmissions using the same field structure, making the control mechanism universal and reducing overall control signaling complexity without sacrificing the precision needed for different transmission types.
2Measurement precision
If computation time for CSI reporting is ensured, then CSI accuracy is improved, but the timing flexibility for uplink data transmission is reduced
Solution Approach 1:
The patent implements dynamic timing offset indication where the same downlink control information field can adaptively provide appropriate timing offsets for both CSI reports and uplink data based on current system conditions. This dynamic approach allows the system to ensure sufficient computation time for CSI accuracy while maintaining the flexibility to adjust timing according to varying traffic and channel conditions.
Solution Approach 2:
The invention changes the timing parameters dynamically through the unified downlink control information field. By encoding timing offset information that applies to both CSI reports and uplink data in a single field, the system can adjust computation time for CSI processing while simultaneously maintaining timing flexibility for data transmissions, resolving the contradiction between accuracy and adaptability.
Data Source
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AI summary
The present specification provides a method for transmitting and receiving an uplink channel in a wireless communication system, and a device therefor. Particularly, a method for transmitting an uplink channel by a terminal in a wireless communication system can comprise the steps of: receiving, from a base station, information indicating a first timing offset for channel state information (CSI) reporting and/or a second timing offset for transmitting uplink data; and transmitting an uplink data channel to the base station in a resource region configured in accordance with a specific timing offset value. The specific timing offset value can be set by applying the first timing offset and/or the second timing offset in accordance with the type of information allocated to the uplink data channel.