Multi-Carrier V2X Transmission via Receiver Status Feedback
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Solution Overview
Problem
In existing V2X data transmission systems, the transmitter UE freely selects carriers for duplication without considering the receiver's capabilities, leading to poor data transmission reliability due to lack of feedback.
Innovation Solution
A method for multi-carrier data transmission that determines a suitable second carrier based on the status of the receiving UE, including acquiring candidate carriers, sending information, and selecting based on feedback, to ensure simultaneous reception and improve reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the Tx UE freely selects carriers for duplication based on its own capability, then the device complexity is reduced and operation is simplified, but the reliability of V2X data transmission deteriorates because the Rx UE may not be able to receive data simultaneously on the selected carriers
Solution Approach 1:
The patent introduces a feedback mechanism where the Rx UE reports its carrier reception status and capability information to the Tx UE. This feedback enables the Tx UE to make informed carrier selection decisions that consider the Rx UE's actual reception capabilities, thereby resolving the contradiction between simple operation and reliable transmission.
Solution Approach 2:
The patent implements preliminary action by having the Rx UE proactively report its carrier capability information before the actual data transmission begins. This advance information allows the Tx UE to pre-select appropriate carriers for duplication, ensuring both operational simplicity and transmission reliability from the outset.
2Device complexity
If the Tx UE adopts the duplication mechanism without considering Rx UE's carrier reception status, then the device complexity is reduced, but the manufacturing precision of the transmission system deteriorates due to mismatched carrier selection
Solution Approach 1:
The feedback mechanism provides the Tx UE with accurate information about the Rx UE's carrier reception status, enabling precise carrier selection without increasing the overall system complexity. The feedback contains exactly the information needed for precise matching.
Solution Approach 2:
The patent changes the parameter of carrier selection from being based solely on Tx UE capability to being based on a combination of Tx UE capability and Rx UE reception status. This parameter change enables precise carrier matching while maintaining system simplicity through standardized feedback procedures.
3Ease of operation
If multi-carrier transmission is implemented without feedback mechanism, then the ease of operation is improved, but the reliability of data transmission deteriorates due to inability to verify Rx UE's carrier reception capability
Solution Approach 1:
The patent introduces a lightweight feedback mechanism where the Rx UE reports its carrier reception status. This feedback maintains operational simplicity while significantly improving reliability by enabling the Tx UE to verify and match carrier selections with the Rx UE's actual capabilities.
Data Source
AI summary
Provided are a method and a device for multi-carrier data transmission. The method includes: performing, by a first UE, data transmission between UEs via a first carrier; determining, based on a status of a second UE, a second carrier for performing multi-carrier data transmission; and performing data transmission between UEs via the first carrier and the second carrier. The device includes: a second carrier determination module, configured to determine, based on a status of a second UE, a second carrier for performing multi-carrier data transmission in response to data transmission being performed with the second UE via a first carrier; and a transmission module configured to perform data transmission between UEs via the first carrier and the second carrier.