V2X Reserved Resource Reuse Using Reception Feedback
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Solution Overview
Problem
Existing communication technologies do not provide feasible solutions for utilizing reserved resources that are not used in initial transmissions in V2X communications.
Innovation Solution
A communication apparatus and method that allows a transmitter to utilize a reserved resource by transmitting data in a first reserved resource, receiving response information on successful reception, and determining the usage of a second reserved resource based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a reserved resource is allocated for a transmission but the transmission is not successfully performed, then the resource remains unused and wasted, but implementing a mechanism to detect and reallocate such resources increases system complexity
Solution Approach 1:
The patent implements a feedback mechanism where the receiving communication apparatus sends response information to the transmitter about the successful or unsuccessful reception of data. This feedback allows the transmitter to determine whether the reserved resource was successfully used and triggers appropriate actions (retransmission or resource release) accordingly, enabling efficient resource utilization without excessive complexity
Solution Approach 2:
The patent enables the transmitter to detect when a reserved resource is not successfully used (through lack of response information or explicit failure indicators) and recover the resource by releasing it for potential reuse by other communication apparatuses. This mechanism prevents resource waste while maintaining manageable system complexity through automated detection and release procedures
2Reliability
If the transmitter waits for response information before determining resource usage, then resource allocation accuracy is improved, but transmission time is increased
Solution Approach 1:
The patent applies preliminary action by having the receiving communication apparatus send response information in advance or at predetermined time intervals after the transmission. This allows the transmitter to determine resource usage status before the next resource allocation cycle begins, ensuring accurate resource management while minimizing time delay through proactive status reporting rather than passive waiting
Data Source
AI summary
The present disclosure provides communication apparatuses and communication methods for utilization of released resource. The communication apparatuses include a communication apparatus comprising: a receiver which, in operation, receives release information relating to a reserved resource from another communication apparatus, the reserved resource being reserved for a transmission from the another communication apparatus; and circuitry which, in operation, selects a resource from a plurality of resource candidates when the communication apparatus is to do a subsequent transmission, wherein the plurality of resource candidates includes the reserved resource.