V2V Control Plane Signaling Optimization via Trigger Conditions
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Solution Overview
Problem
The frequent reporting of current location by user equipment (UE) to a base station in Vehicle to Vehicle (V2V) communication mechanisms leads to excessive occupancy of signaling radio bearer resources, increased signaling overhead, and elevated power consumption, particularly as the number of UEs and reporting frequency increase.
Innovation Solution
The base station configures a trigger condition for the UE based on resource situations, such as grid division and velocity changes, to control the number and frequency of location reports, ensuring accurate location information is reported only when necessary, thereby reducing control plane signaling overheads and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE frequently reports current location to the base station through RRC messages, then the base station can maintain accurate location information for scheduling, but excessive occupancy of signaling radio bearer resources occurs
Solution Approach 1:
The patent implements dynamic location reporting by configuring trigger conditions that adapt to UE movement patterns. The UE transitions from continuous reporting to event-triggered reporting, where reports are sent only when location changes exceed a threshold or specific movement events occur. This dynamic approach maintains location accuracy while significantly reducing signaling overhead compared to frequent periodic reporting.
Solution Approach 2:
The patent changes the reporting parameter from fixed-frequency periodic reporting to conditional reporting based on trigger conditions. The trigger conditions include location change thresholds, velocity thresholds, and event-based triggers. By changing these parameters dynamically based on UE behavior and network conditions, the system optimizes the balance between location accuracy and signaling overhead.
2Loss of information
If the UE continuously triggers RRC report messages to update location, then the base station can learn current location for scheduling, but power consumption of the UE increases
Solution Approach 1:
The patent implements periodic location updates only when triggered by specific conditions rather than continuous periodic reporting. The trigger conditions include location change thresholds, velocity thresholds, and event-based triggers. This periodic action based on events rather than fixed intervals reduces power consumption while ensuring location information is updated when meaningful changes occur.
Solution Approach 2:
The UE autonomously determines whether to trigger a location report by evaluating local trigger conditions such as location change thresholds and velocity thresholds. This self-service mechanism eliminates the need for continuous network-controlled periodic reporting, reducing power consumption while maintaining adequate location information updates for scheduling purposes.
3Quantity of substance
If the number of UEs increases and reporting frequency increases, then more location information is available for scheduling, but excessive macro network resources are occupied
Solution Approach 1:
The patent implements partial reporting by sending location information only when trigger conditions are met, rather than reporting all location updates. This partial action approach ensures that the base station receives sufficient location information for effective scheduling while avoiding excessive resource occupation that would occur with full periodic reporting from all UEs.
Solution Approach 2:
The system dynamically adjusts reporting behavior based on network conditions and UE behavior. When the number of UEs increases, the trigger conditions can be adjusted to maintain adequate location information availability while preventing excessive resource occupation. This dynamic adaptation allows the system to scale efficiently with increasing UE density.
Data Source
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AI summary
A method and system for processing control plane signaling in a Vehicle to Vehicle (V2V) transmission mechanism are provided. A base station configures a trigger condition for a user equipment (UE) based on resource situations. The UE receives the trigger condition, and reports current location information to the base station based on the trigger condition when the trigger condition is satisfied. The base station appropriately reduces control plane signaling overheads and the power consumption of the UE on the premise of ensuring the location accuracy of the UE by controlling the number of reports and reporting frequency of the UE based on the trigger condition, thereby achieving the objective of improving the overall utilization of radio resources and reducing the power consumption of the UE.