RAN Page Message Priority Indication for Wireless Power Optimization
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Solution Overview
Problem
Conventional methods lead to inefficiencies in wireless devices monitoring page messages, as they frequently wake up to listen for all page messages during a transmission period, wasting battery power and potentially missing messages on other channels due to monitoring multiple channels for different communication sessions with varying latency sensitivity.
Innovation Solution
A radio access network (RAN) transmits an indication of the number of first-priority page messages scheduled for transmission, allowing wireless devices to determine if and how many page messages to receive during a page message transmission period, thereby optimizing power usage and reducing the likelihood of missing messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile devices wake up frequently to monitor all page messages during transmission periods, then communication reliability is improved, but battery power consumption increases
Solution Approach 1:
The patent segments page messages into different priority levels (first-priority and second-priority messages). The RAN transmits an indication of the number of first-priority page messages, allowing mobile devices to wake up only when necessary and monitor only the necessary portion of transmissions, thereby reducing power consumption while maintaining communication reliability for critical messages.
Solution Approach 2:
Instead of requiring mobile devices to monitor the entire page message transmission period, the patent enables devices to monitor only the necessary first-priority messages. The RAN provides an indication (count) of first-priority messages, allowing devices to perform partial monitoring action - waking up only when first-priority messages are present - thus reducing energy consumption while ensuring reliable delivery of critical communications.
2Adaptability or versatility
If mobile devices monitor multiple channels for different communication sessions, then adaptability is improved, but device complexity increases
Solution Approach 1:
The RAN performs preliminary action by transmitting an indication (count) of the number of first-priority page messages before the actual page message transmission. This advance information allows mobile devices to pre-determine whether they need to wake up and monitor the transmission, eliminating the need to continuously monitor multiple channels and reducing device complexity while maintaining adaptability to different communication needs.
Solution Approach 2:
The system implements feedback by having the RAN provide real-time information about the number of first-priority page messages scheduled for transmission. This feedback mechanism enables mobile devices to adjust their monitoring behavior dynamically - waking up only when first-priority messages are indicated - thereby maintaining adaptability to varying communication requirements without increasing device complexity.
3Productivity
If mobile devices wake up during specified time slots to monitor transmissions, then productivity is improved, but loss of energy increases
Solution Approach 1:
The patent introduces dynamic adjustment to the fixed wake-up schedule. Instead of waking up at every specified time slot regardless of actual message content, mobile devices use the indication of first-priority message counts to dynamically determine whether to wake up. This dynamic behavior maintains productivity by ensuring wake-ups occur only when necessary, thereby reducing energy loss while preserving communication effectiveness.
Solution Approach 2:
The system changes the parameter of wake-up frequency based on the indication of first-priority message counts. When the indication shows zero first-priority messages, devices can remain in sleep mode; when the indication shows positive counts, devices wake up to monitor. This parameter change (wake-up vs. sleep state) based on message count indication optimizes the balance between productivity and energy consumption.
Data Source
AI summary
A radio access network (RAN) schedules at least one page message for transmission during a page message transmission period of a synchronous capsule. The at least one page message includes a first number (zero or more) of first-priority page messages followed by a second number (zero or more) of second-priority page messages. The RAN transmits an indication of the first number prior to the page message transmission period. The indication of the first number may be reflected in a time offset between a beginning of the synchronous capsule and a beginning of a predefined time slot, or the indication of the first number may be included in an overhead message in the synchronous capsule. A wireless device that is configured to receive first-priority page messages determines whether to monitor the page message transmission period, and how many page messages to receive, based on the indication of the first number.