Uplink Signal Processing for Wireless Resource Allocation
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Solution Overview
Problem
In conventional wireless cellular communications systems, the delay in uplink data transmission and channel quality feedback is high due to the need for channel measurement feedback processing, leading to increased processing time, transmission delays, and potential scheduling failures in next-generation wireless communications systems like New Radio (NR), which require low-latency data transmission and feedback.
Innovation Solution
A signal processing method where a network device determines time-frequency resources based on terminal device capability information, including processing times for uplink data and control information, to optimize resource allocation and transmission modes, allowing for separate or multiplexed transmission of uplink data and control information, thereby reducing delays and improving spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device processes channel measurement feedback information before uplink data transmission, then the channel state measurement can be completed, but the uplink processing time period is increased and transmission delay is increased
Solution Approach 1:
The patent segments the uplink transmission into two independent parts: uplink data transmission and uplink control information (channel measurement feedback). By separating these processes, the terminal device can transmit uplink data without waiting for channel measurement feedback processing to complete, thus reducing the uplink processing time period while still ensuring channel state measurement is completed through the control information transmission mechanism.
2Productivity
If the network device schedules uplink data and channel measurement feedback in the same slot, then spectral efficiency is improved, but the terminal device cannot complete uplink processing before transmission is required
Solution Approach 1:
The patent introduces dynamic scheduling mechanisms where the network device can flexibly allocate time-frequency resources for uplink data and uplink control information based on terminal capability and real-time conditions. The system dynamically adjusts whether to transmit data and feedback in the same slot or different slots, allowing the terminal to complete processing when needed while maintaining spectral efficiency when conditions permit.
3Manufacturing precision
If the terminal device waits for channel measurement feedback processing to complete before starting uplink data processing, then processing accuracy is ensured, but transmission delay is increased
Solution Approach 1:
The patent enables the terminal device to perform preliminary uplink data processing and preparation activities before the channel measurement feedback is fully processed. By initiating data processing in advance and using the time-frequency resource allocation mechanism, the terminal can ensure processing accuracy is maintained while significantly reducing transmission delay through parallel processing of data and feedback channels.
Data Source
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AI summary
This application provides a signal processing method and apparatus. A network device obtains capability information of a terminal device, where the capability information includes a processing time period for uplink data of the terminal device and a processing time period for uplink control information of the terminal device; determines a first time-frequency resource based on the capability information, where the first time-frequency resource is used to carry first uplink data and/or first uplink control information; and sends first signaling to the terminal device, where the first signaling indicates the first time-frequency resource. This application can improve efficiency of configuring a time-frequency resource by the network device for the first uplink data and/or the first uplink control information of the terminal device, thereby reducing a signal transmission delay.