Vehicular Terminal Base Station Segmentation for Idle Mode Activation
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Solution Overview
Problem
Current vehicular communication systems face challenges in efficiently detecting and activating vulnerable road users (VRUs) in idle mode, particularly in situations where their presence and identity are unknown, making it difficult to initiate timely warnings and communications during potential dangers.
Innovation Solution
A method and system where vehicular-capable terminals receive a list of base stations configured as road side units, allowing them to automatically connect when within range, enabling VRUs to participate in warning systems by determining whether to activate a connection based on the list of base stations, and upon detection, activating a connection with a suitable base station to engage in vehicular communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If VRUs in idle mode continuously monitor all base stations for detection and activation, then detection reliability is improved, but power consumption increases significantly
Solution Approach 1:
The patent segments the base station monitoring task by dividing all base stations into two distinct groups: a first group that VRUs continuously monitor for wake-up signals, and a second group that is monitored only when needed. This segmentation allows VRUs to reduce power consumption by not continuously monitoring all base stations while maintaining detection reliability through targeted monitoring of the first group.
Solution Approach 2:
The patent implements periodic action by having VRUs transition between different monitoring states. VRUs periodically check for wake-up signals from the first group of base stations and only activate full monitoring of the second group when triggered by specific events or conditions, rather than maintaining continuous monitoring of all base stations.
2Loss of time
If VRUs monitor all base stations to ensure timely detection, then response time is improved, but device complexity increases
Solution Approach 1:
The patent reduces monitoring complexity by segmenting base stations into a first group for continuous lightweight monitoring and a second group for conditional monitoring. This segmentation simplifies the device's monitoring logic compared to uniformly monitoring all base stations, as the system only needs to implement two distinct monitoring modes rather than full monitoring of all base stations simultaneously.
3Reliability
If VRUs establish connections with all base stations for comprehensive coverage, then communication reliability is improved, but network resource consumption increases
Solution Approach 1:
The patent segments VRU connections into two categories: persistent connections with base stations in the first group that provide core communication reliability, and on-demand connections with base stations in the second group that are established only when specific communication needs arise. This segmentation reduces overall network resource consumption while maintaining communication reliability through the persistent connections with the first group.
Solution Approach 2:
The patent applies partial action by establishing full connections only with a subset of base stations (the first group) rather than all base stations. This partial connection strategy provides sufficient communication reliability for most scenarios while significantly reducing network resource consumption compared to establishing connections with all base stations.
Data Source
AI summary
Methods and apparatuses for activating a vehicular-capable terminal to connect to a base station and/or road side unit. Accordingly a vehicular-capable terminal which would otherwise be in idle mode can then participate in vehicular communications, if appropriate.