V2X SPS Load Distribution Across Heterogeneous Base Stations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In cellular communication systems supporting V2X communications, the Semi-Persistent Scheduling (SPS) scheme often leads to communication failures due to increased load, particularly for messages requiring high reliability and low latency, as data cannot be successfully transmitted or received when congestion levels exceed a threshold.
Innovation Solution
The method involves dynamically changing the SPS configuration by distributing the load across multiple base stations supporting different radio access technologies (RATs), such as 4G and 5G, by adjusting transmission intervals and data sizes based on channel congestion, allowing for efficient resource allocation and message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the SPS scheme is used for V2X communication with a single base station, then the transmission reliability for critical messages is improved, but the system fails under high load conditions due to congestion
Solution Approach 1:
The patent divides the communication load from a single base station into multiple segments handled by different base stations supporting different RATs (4G LTE and 5G NR). The vehicle distributes V2X communication traffic across multiple base stations, with each base station handling a portion of the load, thereby preventing congestion while maintaining transmission reliability for critical messages.
Solution Approach 2:
The patent implements multi-functionality by enabling the vehicle to communicate with multiple base stations supporting different radio access technologies (4G LTE and 5G NR). The system can dynamically select and switch between different RATs based on load conditions, making the communication system universally adaptable to various network conditions and preventing single-point congestion.
2Productivity
If the SPS configuration is changed dynamically to distribute load across multiple base stations, then the system capacity is improved, but the complexity of configuration management increases
Solution Approach 1:
The patent implements self-service by enabling the vehicle to autonomously manage its own SPS configuration across multiple base stations. The vehicle independently monitors load conditions, selects appropriate base stations, and configures SPS parameters without requiring complex centralized coordination, thereby reducing overall system complexity while improving capacity.
Solution Approach 2:
The patent applies dynamics by making the SPS configuration flexible and adaptable to changing network conditions. The vehicle can dynamically adjust SPS parameters such as transmission intervals and resource allocation based on real-time load conditions of different base stations, allowing the system to optimize capacity while managing complexity through adaptive rather than static configuration.
3Reliability
If the transmission interval is reduced to increase message frequency, then the communication reliability is improved, but the channel congestion increases
Solution Approach 1:
The patent resolves this contradiction by adding another dimension to the communication system - using multiple base stations with different RATs (4G and 5G) as separate transmission dimensions. Instead of increasing message frequency on a single congested channel, the system distributes messages across multiple dimensional pathways, achieving high communication reliability without increasing congestion on any single channel.
Data Source
AI summary
An operation method of a first communication node located in a vehicle may include: performing V2X communication with a second communication node using an original resource according to an original SPS configuration; when a congestion level in the original resource is not less than a predetermined threshold and at least one target base station supporting V2X communication is discovered, generating new SPS configuration to be applied to the serving base station and the at least one target base station by changing original SPS configuration; performing a message transmission and reception procedure with the at least one target base station for delivery of new SPS configuration; and performing V2X communication with the second communication node using first resource scheduled by the serving base station based on new SPS configuration and second resource scheduled by the at least one target base station based on new SPS configuration.