Uplink Repeat Transmission Power for Joint Channel Estimation
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Solution Overview
Problem
The challenge in New Radio (NR) systems is how to perform power control for joint channel estimation during repeated transmission of uplink channels like PUSCH and PUCCH to improve coverage, as existing methods do not effectively address this issue.
Innovation Solution
The solution involves maintaining the same transmission power for multiple repeated transmissions of uplink channels, enabling joint channel estimation and enhancing transmission performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device sends a scheduling request on a physical uplink control channel, then the network device can allocate uplink resources, but uplink resources are wasted when the network device fails to send scheduling information in time
Solution Approach 1:
The network device sends feedback information to the terminal device to indicate whether scheduling information will be sent. Based on this feedback, the terminal device decides whether to continue occupying the uplink resource, avoiding resource waste when scheduling information is not needed
Solution Approach 2:
The terminal device performs preliminary resource occupation based on a scheduling request, and then adjusts the occupation duration based on subsequent feedback information from the network device, optimizing resource utilization
2Reliability
If the terminal device occupies uplink resources for a long time to ensure transmission, then transmission reliability improves, but uplink resource occupancy time increases
Solution Approach 1:
The uplink resource occupation duration is made dynamic rather than fixed. The terminal device adjusts the occupation time based on feedback information from the network device, extending or reducing duration as needed for reliable transmission while optimizing resource usage
Solution Approach 2:
The network device provides feedback information that guides the terminal device in determining the appropriate uplink resource occupation duration, balancing transmission reliability with resource efficiency
3Productivity
If the terminal device sends multiple scheduling requests, then the probability of obtaining uplink resources increases, but signaling overhead increases
Solution Approach 1:
The terminal device sends a preliminary scheduling request to initiate resource allocation, then uses feedback information to determine whether additional requests are needed, reducing unnecessary signaling while ensuring resource acquisition
Data Source
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AI summary
The embodiments of the present disclosure provide a wireless communication method, a terminal device, and a network device. Transmission power of a plurality of repeated transmissions of an uplink channel is same, capable of achieving joint channel estimation between transmission occasions and improving transmission performance of the uplink channel. The wireless communication method includes: determining, by a terminal device, that transmission power of a plurality of repeated transmissions of an uplink channel is same.