V2V Resource Pool Selection for Emergency Information Transmission
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Solution Overview
Problem
In sidelink communications, particularly in V2V scenarios, emergency information transmission is hindered by semi-duplexing issues, where receiver ends fail to receive information within the required short period due to existing protocols that repeatedly transmit control and data in different subframes, leading to potential missed detection of emergency information.
Innovation Solution
A terminal is configured with multiple resource pools for transmitting different types of information, allowing the selection of resources based on the information's attribute, ensuring emergency information is transmitted efficiently by using specific resource pools optimized for low latency and reliability, avoiding overlap with non-emergency information transmission to guarantee timely reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information and data are transmitted repeatedly in different subframes according to existing protocols, then transmission reliability is improved, but transmission latency increases and emergency information cannot be received within required time
Solution Approach 1:
The patent combines control information and data into the same subframe for transmission, eliminating the time delay caused by separate transmissions in different subframes. This merging approach maintains reliability through repeated transmissions while reducing latency to meet emergency information requirements.
Solution Approach 2:
The patent implements repeated transmissions of control information and data within the same subframe structure, using periodic action to ensure reliability while minimizing the time interval between transmissions. This allows receivers to detect information quickly while maintaining transmission reliability through repetition.
2Productivity
If multiple resource pools are configured for different information types, then resource utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments resource pools into different types (first type for emergency information, second type for non-emergency information) with distinct characteristics. This segmentation allows efficient resource allocation and selection based on information attributes while keeping each resource pool's structure relatively simple.
Solution Approach 2:
The patent assigns different qualities or characteristics to different resource pools based on local requirements. First type resource pools are optimized for low latency and high reliability for emergency information, while second type resource pools are optimized for other requirements, allowing each pool to have specialized properties without making the entire system complex.
Data Source
AI summary
Embodiments of this disclosure provide an information transmission method and apparatus and a system. The method is applicable to a terminal, the terminal being configured with a first type of resource pool for transmitting first type of information and a second type of resource pool for transmitting second type of information; wherein, the method includes: when the terminal is triggered to transmit information, it selects resources for transmitting the information from the configured first type of resource pool or second type of resource pool according to an attribute of the information; and transmits the information by using the selected resources. With the embodiments of this disclosure, it may be ensured that the terminal will not miss detecting a type of information due to a semi-duplexing problem, such as detecting resources for transmitting emergency information, thereby increasing utilization of resources, and improving reliability of V2V communications.