RF Power Amplifier Gain Control for Idle Channel Power Saving
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Solution Overview
Problem
The increasing power consumption of smartphones due to idle dedicated channel (DCH) maintenance in wireless terminals leads to reduced standby time and user experience, especially since existing fast dormancy technologies require network support and increase signaling load, causing delays and additional power consumption.
Innovation Solution
A wireless terminal with a main control unit, radio frequency power amplifier, and antenna that initiates a procedure to establish a physical channel and reduces uplink gain when no data is transmitted within a preset time, maintaining the channel without disconnecting it, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wireless terminal maintains the DCH connection during idle periods, then the connection readiness and user experience are improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the power amplifier's working state adjustable rather than fixed. The main control unit dynamically switches the power amplifier between working and non-working states based on whether uplink data needs to be transmitted, allowing the system to adapt its power consumption level to current operational requirements while maintaining connection readiness when needed
Solution Approach 2:
The patent changes the operational parameter of the power amplifier from a constant state to a variable state. By controlling the power amplifier to enter a non-working state during idle periods and switch back to working state when data transmission is required, the system modifies its power consumption parameter dynamically, resolving the contradiction between maintaining connection readiness and reducing power usage
2Use of energy by moving object
If the DCH connection is released quickly to reduce power consumption, then the power saving is achieved, but the delay in reestablishing connection and user experience deteriorates
Solution Approach 1:
The patent applies preliminary action by maintaining the DCH connection and power amplifier in a ready state before data transmission is actually needed. Instead of releasing and reestablishing the connection, the system keeps the connection preliminarily active during idle periods, so when uplink data arrives, transmission can begin immediately without the time loss of reestablishment
3Reliability
If the power amplifier remains in working state continuously, then the transmission readiness is maintained, but the power consumption increases
Solution Approach 1:
The patent makes the power amplifier's state dynamic rather than continuous. The main control unit monitors for uplink data and switches the power amplifier between working and non-working states accordingly, ensuring transmission readiness is maintained only when necessary while reducing power consumption during idle periods
Solution Approach 2:
The system implements periodic monitoring and state switching of the power amplifier. Instead of continuous operation, the power amplifier is activated periodically when uplink data is detected and deactivated during idle periods, creating a rhythmic pattern of operation that balances transmission readiness with power conservation
Data Source
AI summary
A wireless terminal is provided, including a main control unit, a radio frequency power amplifier, and an antenna, where: the main control unit is coupled to the radio frequency power amplifier, and an output end of the radio frequency power amplifier is coupled to the antenna; the main control unit is configured to initiate a procedure for establishing a physical channel, and send a first gain control instruction to the radio frequency power amplifier, where when there is no uplink data to be transmitted through the physical channel link within a first preset time, the first gain control instruction is an instruction for reducing a gain; the radio frequency power amplifier determines its gain level according to the first gain control instruction; and the antenna is configured to transmit a radio frequency signal amplified by the radio frequency power amplifier.