Dynamic Beacon Interval Start Time Updates for Wireless Power Save
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Solution Overview
Problem
Current power management mechanisms in wireless communication networks, particularly in millimeter-wave bands, face challenges in efficiently managing power save modes, leading to incorrect identification of power save states and limited duration of power saving, which affects battery life and network responsiveness.
Innovation Solution
The implementation of a power management system that allows wireless stations to dynamically update the Beacon Interval Start Time field in Wakeup Schedule Elements, enabling extended power save modes by switching between awake and doze periods based on updated BI start time values, thereby improving power efficiency and responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If wireless stations use traditional power management mechanisms with fixed beacon interval start times, then power save mode can be implemented, but the duration of power saving is limited and battery life is not sufficiently extended
Solution Approach 1:
The patent implements dynamic updates of the Beacon Interval Start Time field in Wakeup Schedule Elements, allowing the power management parameters to change over time rather than remaining fixed. This enables the system to adapt power save durations based on current network conditions and station requirements, extending battery life while maintaining reliable state identification through coordinated updates between PCP and STAs.
2Duration of action of moving object
If wireless stations extend power save duration by updating BI start time values, then battery life is improved, but network responsiveness may be degraded
Solution Approach 1:
The patent employs feedback mechanisms where the PCP transmits updated Wakeup Schedule Elements to STAs, and STAs can indicate their power save mode status. This feedback loop allows the network to coordinate wake-up times and maintain responsiveness despite extended power save durations, as the PCP can schedule transmissions to coincide with STA wake-up periods.
3Reliability
If wireless stations frequently wake up to check for updates, then network responsiveness is maintained, but power consumption increases reducing battery life
Solution Approach 1:
The patent implements periodic wake-up schedules where STAs wake up at predetermined intervals defined by the Beacon Interval Start Time field in Wakeup Schedule Elements. This periodic action allows STAs to remain in low-power doze mode for extended periods while still maintaining network responsiveness by waking up at scheduled times to check for buffered transmissions or updates.
Data Source
AI summary
Some demonstrative embodiments include apparatuses, devices, systems and methods of power management in a wireless network. For example, a wireless station may be configured to transmit a first frame including a first Wakeup Schedule Element (WSE), the first WSE including a first beacon interval (BI) start time field value; to switch to a Power Save (PS) mode based on the first BI start time field value; and during the PS, transmit a second frame including a second WSE, the second WSE including a second BI start time field value, e.g., different from the first BI start time field value.