Dynamic Transmission Frequency for VRU Safety Notifications
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems for vulnerable road users (VRUs) lack a mechanism to dynamically adjust the transmission frequency of safety messages based on static and dynamic environmental conditions, leading to inefficient battery usage and potential untimely message receipt.
Innovation Solution
The system dynamically determines the transmission frequency for safety messages based on activity information from VRU user equipment (UEs) and data from network units, roadside units, and service servers, considering factors like location, motion state, and environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed transmission frequency is used for safety messages, then the system is simple to implement, but battery power is wasted and message timeliness is compromised
Solution Approach 1:
The transmission frequency is made dynamic rather than fixed. The system continuously adjusts the transmission frequency based on real-time activity information from the VRU UE and network conditions, allowing the frequency to adapt to changing scenarios such as high-activity areas (intersections, crosswalks) versus low-activity areas, thereby resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The system implements feedback mechanisms where the VRU UE reports activity information to the network unit, which then uses this feedback to determine and adjust the transmission frequency. This closed-loop feedback system enables adaptive frequency selection based on actual usage patterns, balancing power efficiency with message delivery reliability.
2Reliability
If transmission frequency is increased to ensure timely notifications, then safety is improved, but power consumption increases
Solution Approach 1:
The system changes the transmission frequency parameter dynamically based on activity levels. In high-activity scenarios (intersections, crosswalks, areas with surrounding vehicles), the frequency increases to ensure timely notifications. In low-activity scenarios, the frequency decreases to conserve battery power, thus resolving the contradiction between reliability and energy consumption through context-aware parameter adjustment.
Solution Approach 2:
The system uses periodic transmission adjusted by activity information. Instead of continuous or fixed periodic transmission, the system modulates the period based on real-time conditions, transmitting more frequently when needed and less frequently when safe, thereby optimizing both safety and power efficiency.
3Use of energy by moving object
If transmission frequency is decreased to save power, then battery life is extended, but message timeliness deteriorates
Solution Approach 1:
The transmission frequency parameter is changed dynamically based on activity information. When activity levels are low (e.g., safe zones with no surrounding vehicles), the system decreases frequency to conserve power. When activity levels increase (e.g., intersections, crosswalks, areas with detected vehicles), the system increases frequency to ensure timely delivery, thus resolving the contradiction between power savings and message timeliness through context-driven adaptation.
Solution Approach 2:
The system transitions from static to dynamic transmission frequency. The frequency is continuously adjusted based on real-time activity information from the VRU UE and network conditions, allowing the system to optimize between power consumption and delivery speed based on current operational context.
4Loss of energy
If activity information is collected and processed to determine transmission frequency, then power efficiency is improved, but system complexity increases
Solution Approach 1:
The network unit serves as an intermediary that handles the complexity of activity information collection and processing. Instead of the VRU UE independently analyzing complex environmental factors, the UE simply reports basic activity information to the network unit, which then determines the appropriate transmission frequency, thereby reducing the complexity burden on the UE while achieving power efficiency.
Solution Approach 2:
The system uses feedback loops where the VRU UE provides activity information to the network unit, which then adjusts transmission frequency based on this feedback. This feedback mechanism enables centralized intelligence to handle complexity while distributing the benefit of power-efficient transmission to the UE.
Data Source
AI summary
Wireless communications systems, apparatuses, and methods are provided. A method of wireless communication performed by a user equipment (UE) may include transmitting, to a network unit, activity information associated with the UE, receiving, from the network unit, an indication of a transmission frequency for transmitting a notification. The transmission frequency may be based at least in part on the activity information associated with the UE. The method may further include transmitting the notification based on the transmission frequency.