Dynamic Transmission Resource Allocation for IoV Systems
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Solution Overview
Problem
In the Internet of Vehicles system, the use of fixed four-time transmission for vehicle-to-vehicle communication leads to resource collisions and interference, degrading overall system performance due to limited available resources and in-band leakage.
Innovation Solution
A network device determines the quantity of transmission times based on received requests and allocates a resource set with corresponding time-frequency resource locations to terminal devices, reducing the probability of resource collisions by configuring flexible transmission times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed four-time transmission is used for vehicle-to-vehicle communication, then transmission reliability is improved through repeated transmissions, but resource collision probability increases and system performance degrades
Solution Approach 1:
The patent applies dynamics by making the transmission time configurable rather than fixed. The network device determines the quantity of transmission times dynamically based on service data packet sizes, channel conditions, and traffic load, allowing the system to adapt between more transmissions for reliability when needed and fewer transmissions for efficiency when possible, thus resolving the contradiction between transmission reliability and system performance
Solution Approach 2:
The patent changes the parameter of transmission time from a fixed value (4 times) to a configurable parameter that can be adjusted by the network device. By modifying this parameter based on actual communication needs, the system can optimize between ensuring sufficient transmission reliability and maintaining high system performance by avoiding unnecessary resource consumption
2Reliability
If fixed four-time transmission is used, then coverage and reliability are improved, but resource waste increases due to limited available resources
Solution Approach 1:
The patent applies partial action by allowing the transmission time to be less than the traditional fixed four times when channel conditions are good or data packets are small. The network device can determine that partial transmissions (e.g., 1-3 times) are sufficient, avoiding the excessive resource consumption of always transmitting four times while maintaining adequate reliability
Solution Approach 2:
By changing the transmission time parameter from fixed to configurable, the system can adjust the number of transmissions to match actual needs, reducing resource waste when full four-time transmission is unnecessary while preserving reliability when conditions require it
3Productivity
If flexible transmission times are configured, then resource utilization is improved and collisions reduced, but system complexity increases due to dynamic allocation
Solution Approach 1:
The patent applies self-service by enabling the network device to autonomously determine and configure transmission times based on pre-set criteria and real-time conditions. The system automatically adjusts transmission parameters without requiring complex manual intervention or coordination, simplifying the implementation of flexible resource allocation while improving resource utilization
Data Source
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AI summary
The present invention discloses a network device, a terminal device, and a resource allocation method, relates to the communications field, and resolves a problem that overall system performance is degraded because all vehicles use fixed four-time transmission when broadcasting service data packets to nearby vehicles. A specific solution is as follows: A receiving unit receives a transmission resource request sent by a first terminal device; a determining unit determines a quantity of transmission times in response to the transmission resource request received by the receiving unit; an allocation unit allocates a resource set to the first terminal device according to the quantity of transmission times determined by the determining unit, where a quantity of resources included in the resource set is equal to the quantity of transmission times; and a sending unit sends, to the first terminal device, time-frequency resource location information of each resource in the resource set allocated by the allocation unit. The present invention is used in a resource allocation process.