Wireless Data Transmission Packet Caching for Internet of Vehicles
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Solution Overview
Problem
The existing LTE communications technology causes data packet delays when applied to the Internet of Vehicles, leading to outdated vehicle traveling information and reduced driving safety due to inefficient data transmission mechanisms.
Innovation Solution
An apparatus and method for transmitting data in a wireless network that discards cached previous-status data packets and caches new status data packets with matching features, allowing for timely data updates by sending the new packets when transmission resources are available, and dynamically allocates spectrum resources between VDC and LTE networks based on load thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the existing LTE data transmission mechanism is used, then the transmission protocol is standardized and reliable, but data packet delays occur and vehicle traveling information is not updated in time
Solution Approach 1:
The patent applies preliminary action by pre-configuring feature configuration information that binds data packet features to logical channels. This allows the system to quickly determine the appropriate transmission channel without complex real-time decisions, reducing data packet delay while maintaining reliable transmission through pre-established channel mappings.
Solution Approach 2:
The patent implements dynamics by enabling the transmit end to dynamically discard cached previous-status data packets and cache new status data packets based on real-time conditions. This dynamic adaptation allows the system to respond to changing network conditions and prioritize timely data updates, reducing delay while maintaining transmission reliability through conditional packet handling.
2Stability of the object's composition
If previous-status data packets are cached and transmitted in sequence, then data transmission order is maintained, but transmission efficiency decreases and delays increase
Solution Approach 1:
The patent applies local quality by treating different data packets differently based on their features. Instead of uniformly caching and transmitting all packets in sequence, the system identifies packets with matching features and selectively discards or caches them based on their specific characteristics. This localized differentiation maintains necessary transmission order for critical data while improving overall transmission efficiency.
Solution Approach 2:
The patent implements discarding and recovering by enabling the transmit end to discard cached previous-status data packets when new status data packets with matching features are received. This mechanism allows the system to recover from inefficient sequential transmission by replacing outdated cached packets with updated information, thereby improving transmission efficiency while maintaining data freshness.
3Device complexity
If spectrum resources are statically allocated, then resource allocation is simple and stable, but resource utilization is low when load varies
Solution Approach 1:
The patent applies dynamics by implementing dynamic spectrum resource allocation between VDC and LTE networks based on real-time load thresholds. The system continuously monitors network load and adjusts spectrum allocation accordingly, transitioning from static to dynamic resource management. This improves spectrum resource utilization during varying load conditions while maintaining manageable complexity through threshold-based decision rules.
Solution Approach 2:
The patent implements parameter changes by adjusting spectrum allocation parameters (VDC spectrum resources and LTE spectrum resources) based on load threshold parameters. When load conditions change, the system modifies the allocation parameters to optimize resource utilization, allowing the network to adapt to varying traffic demands without requiring complex manual reconfiguration.
Data Source
AI summary
An apparatus and a method for transmitting data are included in a wireless network. The apparatus for transmitting data in a wireless network receives a status data packet sent by an upper layer, where the status data packet includes status information of the transmit end in a current status; discards, when there is a cached previous-status data packet, the previous-status data packet and caches the status data packet, where the previous-status data packet includes status information of the transmit end in a previous status; and sends the status data packet to a receive end when obtaining a sending resource, where the previous-status data packet and the status data packet have a same feature. In this way, a data packet delay is reduced; and in an application scenario of the Internet of Vehicles, timely data exchange between vehicles is ensured, and vehicle driving safety is improved.