Multi-Level Transmission Power Control for Bluetooth Discovery
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Solution Overview
Problem
Current Bluetooth and Bluetooth low energy technologies consume excessive power due to the repeated use of maximum transmission power during device discovery and connection establishment, leading to battery waste when devices are close by.
Innovation Solution
Implementing a method for multi-level transmission power control, where the radio module adjusts transmission power levels for packets transmitted during device searching, paging, or advertising procedures, using a power control signal to optimize power usage before establishing a connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If maximum transmission power is used during device discovery and connection establishment, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic transmission power control by adjusting the transmission power level based on the connection status. During device discovery and connection establishment phases, the system dynamically selects appropriate power levels from multiple available levels rather than using fixed maximum power, thereby adapting power consumption to actual communication needs while maintaining reliability
Solution Approach 2:
The patent changes the transmission power parameter from a fixed maximum value to a multi-level adjustable parameter. By introducing multiple transmission power levels and selectively applying them based on connection phase, the system optimizes the power parameter to balance communication reliability with power consumption efficiency
2Reliability
If maximum transmission power is used repeatedly during device searching and paging, then connection establishment reliability is improved, but battery life deteriorates
Solution Approach 1:
The system dynamically adjusts transmission power during device searching and paging operations based on whether a response is received. If no response is received at a given power level, the system increases power for the next attempt; if a response is received, it maintains or reduces power for subsequent communications, thereby extending battery life while ensuring connection establishment
Solution Approach 2:
The patent introduces multi-level transmission power parameters that are changed based on connection establishment progress. By transitioning between different power levels (from maximum to lower levels) as connection is established, the system extends battery duration while maintaining connection reliability
3Area of stationary object
If high transmission power is used for broadcasting advertisements, then advertisement reach is improved, but power consumption increases
Solution Approach 1:
The patent applies different transmission power levels to different advertisement broadcasting scenarios. Instead of uniformly using maximum power for all advertisements, the system selectively applies appropriate power levels based on local conditions such as required reach and device state, thereby reducing overall power consumption while maintaining adequate advertisement reach
Solution Approach 2:
The system uses partial action by transmitting advertisements at sufficient but not excessive power levels. By using multiple power levels and selecting the minimum necessary power for each advertising instance, the system achieves adequate advertisement reach without the excessive power consumption that would result from always using maximum power
Data Source
AI summary
A communications apparatus is provided. A radio module transmits first packets before establishing a connection with a peer communications device. A transmission power utilized for transmitting the first packets is adjustable, so that multiple levels of transmission power are utilized for transmitting the first packets.