Mobile Wireless Device Paging Message Segmentation for Power Reduction
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Solution Overview
Problem
Mobile wireless devices consume significant power during wake-up periods, reducing their operational time between battery recharges due to the high power consumption during processing of paging messages, especially when most messages are not directed to the device.
Innovation Solution
A mobile wireless device apparatus and method that minimizes wake mode time by processing only portions of incoming paging messages and comparing them with previously received messages to determine if they are directed to the device, allowing for early transition to idle mode if matches are found, thereby reducing unnecessary component activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cellular phone processes the entire paging message during wake-up periods, then message decoding reliability is improved, but power consumption increases significantly
Solution Approach 1:
The paging message is divided into multiple segments or blocks. The device processes only the first segment during wake-up period to determine if the message is intended for this device. If the first segment indicates the message is not for this device, the remaining segments are not processed, thereby reducing power consumption while maintaining reliable message filtering.
Solution Approach 2:
The critical identification information is extracted from only a portion of the paging message (specifically the first segment or block). This extracted information is sufficient to determine whether the message is intended for the device, allowing the device to avoid processing the entire message and thus reduce power consumption during wake-up periods.
2Use of energy by moving object
If the cellular phone deactivates most components during idle mode, then power consumption is reduced, but the ability to quickly process incoming messages is worsened
Solution Approach 1:
The device performs preliminary processing of the first segment of the paging message immediately upon waking from idle mode. This preliminary action quickly determines whether the message is intended for the device, allowing for rapid decision-making about whether to fully activate components for complete message processing, thus balancing power savings with responsive message handling.
3Duration of action of moving object
If the wake-up period is shortened to save power, then operational time between recharges is extended, but message reception reliability may be compromised
Solution Approach 1:
The paging message processing is segmented such that the critical decision-making information is contained in the first segment. By processing only this first segment during the shortened wake-up period, the device can reliably determine whether to remain awake for complete message reception or return to idle mode, thus extending operational time while maintaining reliable message reception for intended messages.
Data Source
AI summary
Apparatus and methods for reducing the amount of time a mobile wireless device needs to be in a wake mode in order to determine whether a particular paging message is or is not directed to the mobile wireless device. The method includes: receiving, by a mobile device of a wireless network, a first paging message; processing, by the mobile device, a portion of the first paging message including comparing the processed portion of the first paging message with a processed portion of a second paging message previously received by the mobile device; and determining, by the mobile device, whether to process other portions of the first paging message based at least in part on the comparison.