RFFE Switch Timing Control for SRS Transmission Windows
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Solution Overview
Problem
The existing RFFE protocol has limitations in device type selection due to high requirements on response time, especially when sending a series of data for instruction control, which restricts the flexibility and efficiency of radio frequency front-end devices.
Innovation Solution
A method for controlling a radio frequency front-end device involves receiving a switch control instruction from the processor at a specific moment before a target subframe's first time interval, allowing for on-off switching to be performed within the time interval used for sending an SRS, thereby reducing the proportion of response time within the critical interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the RFFE protocol sends a series of data for instruction control, then the control precision is improved, but the response time requirement becomes very high
Solution Approach 1:
The patent applies preliminary action by sending the switch control instruction at a first moment before the first time interval, rather than during the critical SRS sending interval. This advance timing allows the radio frequency front-end device to prepare and execute the switching operation beforehand, reducing the response time requirement while maintaining control precision.
2Loss of time
If the switch control instruction is sent during the first time interval, then the control timing is improved, but the SRS sending time is reduced
Solution Approach 1:
The switch control instruction is sent at a first moment before the first time interval, allowing the switching operation to be prepared in advance. This ensures that when the first time interval arrives for SRS sending, the switching is already complete, thus maintaining both control timing and sufficient SRS sending time.
Solution Approach 2:
The patent segments the control process into distinct time phases: a preparation phase (first moment before first time interval) for sending the switch control instruction, and an execution phase (first time interval) for SRS sending. This segmentation allows independent optimization of control timing and SRS transmission duration.
3Adaptability or versatility
If the response time requirement is reduced, then the device type selection flexibility is improved, but the control speed is reduced
Solution Approach 1:
By sending the switch control instruction at a first moment before the first time interval, the system reduces the response time requirement from the entire first time interval to a shorter duration, thereby improving device type selection flexibility while maintaining adequate control speed through advance preparation.
Data Source
AI summary
The present application relates to the field of communications technologies, and provides a method for controlling a radio frequency front-end device and user equipment, where the user equipment includes a processor and the radio frequency front-end device, and the method includes: receiving, by the radio frequency front-end device, a switch control instruction from the processor, where the switch control instruction is an instruction sent by the processor to the radio frequency front-end device at a first moment; and performing, by the radio frequency front-end device, on-off switching in response to the switch control instruction.