V2X Resource Scheduling via Frequency-Domain Multiplexing
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Solution Overview
Problem
Current D2D technology in LTE V2X communication is inadequate for high-speed scenarios with a large number of UEs, as it requires separate sending of resource scheduling information and service data, which is inefficient.
Innovation Solution
A method where a first OBU acquires and sends V2X service resources simultaneously, including scheduling information and data, using frequency-domain multiplexing in the same subframe, allowing for resource configuration in the same or different subframes, and employing Incremental Redundancy for reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource scheduling information and service data are sent separately as in D2D technology, then the transmission structure is simple and easy to implement, but the communication efficiency and throughput are low in high-speed scenarios with large number of UEs
Solution Approach 1:
The patent merges resource scheduling information and service data into a single transmission package. The OBU sends both the resource scheduling information (indicating time-frequency resources, modulation and coding scheme) and the V2X service data together in one transmission, rather than separately. This combining approach reduces the number of transmissions needed, improves communication efficiency, and increases throughput while maintaining reasonable implementation complexity.
2Loss of time
If separate transmission of scheduling information and service data is used, then implementation is straightforward, but the number of transmissions increases leading to higher latency and lower efficiency
Solution Approach 1:
The patent combines scheduling information and service data into one transmission event, eliminating the need for separate transmission steps. This merging reduces the total number of transmissions, thereby reducing latency and time loss while the patent maintains ease of implementation by using standard LTE V2X communication mechanisms and resource allocation procedures.
3Reliability
If multiple transmissions are used for reliability as in D2D, then transmission reliability improves, but the number of transmissions increases reducing overall system efficiency
Solution Approach 1:
The patent merges scheduling information and service data into a single transmission that inherently improves reliability. By including all necessary information (scheduling parameters and data) in one transmission, the system reduces the total number of transmissions required while maintaining or improving reliability through better resource utilization and reduced overhead.
Data Source
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AI summary
The present invention provides method and apparatus for sending V2X service, and method and apparatus for configuring resources. The method for sending V2X service includes that a first OBU acquires sending resources for sending a V2X service, where the sending resources include resources required for sending V2X service data and scheduling information of the V2X service, the scheduling information is used for specifying information required for resource scheduling for the V2X service data; and the first OBU sends, on the sending resources, the scheduling information and the V2X service data to a second OBU. Frequency-domain multiplexing is performed in a same subframe in the sending resources for scheduling information and the V2X service data, and the scheduling information specifies that resource configuration is performed, in same and/or different subframes, for the V2X service data. This solution solves the problem in which resource scheduling information and V2X service data can only be sent separately in the D2D technology in the related art and fills the gap in the related art.