Paging Occasion Offset for Wireless Terminal Collision Reduction
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Solution Overview
Problem
In wireless communication systems, particularly in 5G New Radio (NR), paging collisions occur when multiple Universal Mobile Telephone System (UMTS) Subscriber Identify Modules (USIMs) overlap in time, leading to unsuccessful paging as terminals can only monitor one paging channel at a time, resulting in missed notifications on other channels.
Innovation Solution
The implementation of additional paging occasions, determined based on a received configuration, which are offset from the primary paging occasion in the time domain, allowing terminals to monitor multiple channels and reduce collisions by sending paging records on both occasions, thereby ensuring that paging messages are received without overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals monitor only one paging channel at a time, then device complexity is reduced, but paging reliability deteriorates due to collisions when multiple USIMs overlap in time
Solution Approach 1:
The paging monitoring function is segmented across multiple paging occasions. Instead of monitoring a single paging channel, the terminal is configured with multiple paging occasions (first paging occasion and second paging occasion) that are offset in time. This segmentation allows the terminal to monitor multiple paging channels sequentially, resolving the contradiction between reliability and complexity by distributing the monitoring task across multiple time slots rather than requiring simultaneous monitoring of multiple channels.
Solution Approach 2:
The network pre-configures multiple paging occasions and offsets before the terminal needs to monitor for paging messages. The terminal receives configuration information including the offset value in advance, which allows it to calculate and prepare for monitoring at multiple predetermined paging occasions. This preliminary configuration eliminates the need for complex real-time decision-making about which paging channel to monitor, thereby improving reliability without significantly increasing device complexity.
2Reliability
If multiple paging occasions are configured with offsets, then paging reliability improves by avoiding collisions, but loss of time increases due to extended monitoring period
Solution Approach 1:
The terminal monitors paging messages at periodic intervals defined by the configured paging occasions and offsets. Instead of continuous monitoring or monitoring at irregular intervals, the terminal checks for paging messages at specific periodic moments (first paging occasion, then second paging occasion after the offset). This periodic approach ensures that paging reliability is maintained through multiple monitoring opportunities while minimizing time loss by not requiring continuous monitoring between occasions.
3Reliability
If terminals monitor multiple paging occasions, then paging reliability improves, but energy consumption increases due to extended reception window
Solution Approach 1:
The terminal employs periodic monitoring at discrete paging occasions rather than continuous reception. The terminal wakes up or activates its receiver only at the configured first paging occasion and second paging occasion, remaining in a lower power state between these occasions. This periodic action pattern maintains paging reliability through multiple monitoring opportunities while significantly reducing energy consumption compared to continuous monitoring, as the terminal can enter sleep mode or reduce receiver activity between paging occasions.
Data Source
AI summary
Methods, systems, and devices related to digital wireless communication, and more specifically, to techniques related to reducing unsuccessful paging. In one exemplary aspect, a method for wireless communication may include receiving a paging reception configuration from a communication node. The method may also include determining a first paging occasion and a second paging occasion associated with the terminal located along a time domain based on receiving the paging reception configuration. The method may also include receiving a paging message from the communication node during a second paging occasion.