NR-V2X Sidelink Data Transmission with DRX-Aware Targeting
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Solution Overview
Problem
In the NR-V2X system, data transmission efficiency is hindered by the challenge of effectively transmitting data when receiving devices are in a non-active state due to power-saving mechanisms, leading to incomplete or failed data reception.
Innovation Solution
A data transmission method where a sending device determines target identities based on time-frequency resources and resource pool types from sidelink grant information, ensuring data is received by devices in active or wake-up states, and includes mechanisms to adjust DRX states of receiving devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If receiving devices use power-saving mechanisms to enter non-active states, then energy consumption is reduced, but data transmission reliability deteriorates because devices in non-active states cannot receive data
Solution Approach 1:
The patent implements dynamic state management for receiving devices, allowing them to switch between active and non-active states based on DRX configurations. Devices can enter non-active states to save energy while still being able to wake up at scheduled times to receive data, thus resolving the contradiction between energy saving and transmission reliability
Solution Approach 2:
The sending device determines target identities in advance based on time-frequency resources and resource pool types before actual data transmission. This preliminary identification ensures that when data needs to be sent, the receiving device's state can be appropriately managed, preventing data loss even when devices are in non-active states
2Speed
If sending devices transmit data to target identities without considering receiver state, then transmission speed is improved, but data reception completeness deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms where the sending device determines target identities based on sidelink grant information that includes time-frequency resources and resource pool types. This feedback loop ensures that data is transmitted to devices that are in appropriate states to receive it, maintaining both speed and completeness
Solution Approach 2:
The sending device performs preliminary determination of target identities before actual data transmission based on the type of resource pool and time-frequency resources. This advance preparation ensures that receiving devices are in the correct state (active or wake-up state) to receive data, preventing incomplete reception while maintaining transmission efficiency
Data Source
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AI summary
The present application discloses a data transmission method, including: a sending device determining an available target address set according to sidelink grant information, the sidelink grant information including a time-frequency resource and/or a type of a resource pool, and at least one target address in the available target address set being used for the sending device to generate data. The present application further discloses another data transmission method, an electronic device and a storage medium.