Unified Access Control Parameter Update for cIoT
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Solution Overview
Problem
Low-power cellular Internet of Things (cIoT) user equipment (UEs) face significant battery life diminution due to periodic acquisition of unified access control (UAC) parameters from broadcast control channels, which consumes power and signaling resources.
Innovation Solution
A method where cIoT UEs receive an indication that a UAC parameter has changed, allowing them to acquire updates without waiting for the next modification boundary, thereby conserving battery power and reducing the need to periodically check scheduling information lists.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cIoT UEs periodically acquire UAC parameters from broadcast control channels at modification boundaries, then the UAC parameters are kept up-to-date, but battery power is significantly consumed
Solution Approach 1:
The network provides feedback to the UE about UAC parameter changes through paging messages or direct indications. When the network changes UAC parameters, it actively notifies the UE, allowing the UE to update parameters only when necessary rather than periodically checking, thus reducing power consumption while maintaining parameter currency.
Solution Approach 2:
The network performs preliminary action by pre-notifying UEs of upcoming UAC parameter changes through paging messages before the actual modification boundary. This allows UEs to prepare for updates in advance and avoid unnecessary periodic acquisitions, reducing battery power consumption while ensuring parameters are updated timely.
2Reliability
If cIoT UEs periodically check scheduling information lists for UAC parameter updates, then parameter updates are detected, but signaling resources are consumed
Solution Approach 1:
The network implements feedback mechanisms by sending paging messages or direct indications to UEs when UAC parameters change. This eliminates the need for UEs to periodically check scheduling information lists, as the network proactively notifies them of changes, reducing signaling resource consumption while maintaining reliable update detection.
Solution Approach 2:
The network self-services the update notification process by maintaining records of which UEs need to be notified of UAC parameter changes and automatically sending paging messages or direct indications. This removes the burden from UEs to continuously monitor scheduling information, reducing their signaling resource consumption while ensuring they receive updates reliably.
3Use of energy by moving object
If cIoT UEs acquire UAC parameters only at modification boundaries, then power consumption is reduced, but parameter updates may be delayed
Solution Approach 1:
The network provides real-time feedback to UEs about UAC parameter changes through paging messages or direct indications. This allows UEs to update parameters immediately when changes occur, rather than waiting for modification boundaries, thus eliminating update delays while maintaining low power consumption by avoiding periodic acquisitions.
Solution Approach 2:
The network performs preliminary notification of UAC parameter changes through paging messages before the modification boundary. This allows UEs to be alerted in advance and update their parameters timely, preventing any functional delay while still conserving battery power by not requiring continuous monitoring at modification boundaries.
Data Source
AI summary
Techniques and apparatuses described herein provide for an indication that a unified access control (UAC) parameter of a user equipment (UE) has changed. For example, a paging message or direct indication information may be provided to a UE indicating that a UAC parameter has changed. In such a case, the UE may not be expected to periodically check a scheduling information list of a system information block type 1 (SIB1). Thus, battery power of UEs may be conserved and signaling resources that would otherwise be used to periodically check the scheduling information list may be conserved.