Wireless Communication Device Power Saving Method
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Solution Overview
Problem
Wireless communication devices with larger process dimension RFICs experience high power loss, leading to reduced power durability and weak wireless network signals, which cannot be effectively addressed by simply reducing RF signal transmission power.
Innovation Solution
A wireless communication device comprising a system chip, a wake-up controller, and a beacon communication circuit, where the system chip and wireless communication circuit can be made to sleep in response to power saving demands, and the beacon communication circuit periodically sends beacon packets while alternately entering working and sleeping states to maintain communication performance while reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the transmission power of RF signals is reduced to improve power consumption, then power durability is improved, but wireless network signal strength deteriorates
Solution Approach 1:
The patent divides the wireless communication device into multiple functional modules with different power consumption characteristics. The beacon communication circuit operates at low power for periodic beacon transmissions, while the main wireless communication circuit can be selectively activated. This segmentation allows the system to maintain adequate signal strength during active communication while reducing overall power consumption during standby periods.
Solution Approach 2:
The patent implements dynamic power management by adjusting the operational states of different circuit components based on communication needs. The system transitions between different power states (e.g., beacon-only mode vs. full communication mode) to optimize the balance between power consumption and signal strength according to real-time requirements.
2Use of energy by moving object
If the system enters deep sleep mode to reduce power consumption, then power durability is improved, but communication responsiveness deteriorates
Solution Approach 1:
The beacon communication circuit performs preliminary actions by periodically transmitting beacon packets even when the main wireless communication circuit is in sleep mode. This preliminary beacon transmission maintains basic communication awareness and allows the system to respond more quickly when wake-up events occur, as the beacon circuit remains partially active and aware of network conditions.
Solution Approach 2:
The beacon communication circuit acts as an intermediary between the sleep state and full operational state. It provides a intermediate level of communication capability that can detect wake-up events and trigger the main wireless communication circuit to wake up, thereby reducing the sleep-wake delay while maintaining low power consumption during standby.
Data Source
AI summary
A wireless communication device and a power saving method are provided. The wireless communication device includes a wireless communication circuit, a system chip, a wake-up controller, and a beacon communication circuit. The system chip is electrically connected to the wireless communication circuit. The system chip is configured to successively make the wireless communication circuit and the system chip sleep in response to a power saving demand and configured to receive a wake-up signal to successively awake the system chip and the wireless communication circuit. The wake-up controller is electrically connected to the system chip. The wake-up controller is configured to send the wake-up signal to the system chip. The beacon communication circuit is electrically connected to the wake-up controller. The beacon communication circuit is configured to send a beacon packet periodically according to a transmission period.