Mobile Station Paging Indicator for Battery Power Reduction
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Solution Overview
Problem
Current mobile station (MSS) idle mode operation is inefficient due to continuous wakefulness during paging listening intervals, even when no paging messages are designated, leading to excessive battery consumption, especially in short paging cycles for time-sensitive applications like dispatch services.
Innovation Solution
Implementing a paging message indicator and/or a neighbor advertisement message indicator to determine if further messages are present in the listening interval, allowing the MSS to switch to a low power state if no messages are detected, thereby conserving battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the MSS processes every frame of the listening interval and stays awake to check for paging messages and neighbor advertisement messages, then the MSS ensures it does not miss any designated paging messages or neighbor advertisement messages, but the MSS consumes excessive battery power due to continuous wakefulness even when no messages are present
Solution Approach 1:
The base station transmits a preliminary indicator before the listening interval that indicates whether a paging message or neighbor advertisement message will be present. Based on this advance information, the MSS can proactively decide to enter low power state before the listening interval begins, avoiding unnecessary wakefulness while ensuring message reception when needed.
Solution Approach 2:
The system enables the MSS to autonomously determine its own power state based on the received indicator. The MSS independently decides whether to remain awake or enter low power state without continuous base station control, optimizing its own power consumption while maintaining reliable message reception.
2Ease of operation
If the MSS remains awake throughout the entire listening interval to process potential paging messages, then the MSS ensures complete message processing capability, but the MSS cannot enter low power state even when no messages are designated, leading to wasted energy
Solution Approach 1:
The base station provides advance notification through the indicator transmitted before the listening interval, telling the MSS whether messages will be present. This preliminary information allows the MSS to adjust its operation mode beforehand, avoiding the need to remain awake unnecessarily while ensuring full processing capability when messages are actually present.
3Use of energy by moving object
If the MSS checks for neighbor advertisement messages after the listening interval, then the MSS can potentially save power during the interval, but the MSS may miss the neighbor advertisement message if it enters low power state too early
Solution Approach 1:
The base station transmits an indicator before the listening interval that specifically indicates whether a neighbor advertisement message will be present. Based on this advance information, the MSS can confidently enter low power state after the interval if the indicator shows no message is present, eliminating the risk of missing messages while still achieving power savings.
Data Source
AI summary
The invention concerns a method (200) and system (100) for improving the efficiency of a mobile station (112) during a listening interval (310). The method can include the step of setting (212) a paging message indicator (414) or a neighbor advertisement message indicator (416) in which the paging message indicator indicates whether a paging message (314) is the last paging message designated for the mobile station in the listening interval and the neighbor advertisement message indicator indicates the presence of a neighbor advertisement message (316). The method can also include the step of transmitting (214) the paging message indicator or the neighbor advertisement message indicator to the mobile station. Based on these indicators, the mobile station can selectively enter a sleep state during and/or after the listening interval to conserve battery life.