Sidelink Configured Grant HARQ ID Allocation in NR-V2X
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Solution Overview
Problem
Existing technologies lack a method for determining a Hybrid Automatic Repeat reQuest (HARQ) process identity (ID) for Sidelink Configured Grant in New Radio (NR) Uu systems, which is crucial for efficient data transmission and retransmission in vehicle-to-everything (V2X) communication.
Innovation Solution
A method is provided to determine a HARQ process ID for Sidelink Configured Grant by receiving configuration information, determining time domain information, and using this information to allocate HARQ process IDs based on the Sidelink Configured Grant transmission resource, allowing for flexible and diverse HARQ process ID determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple HARQ process IDs are configured for each set of SPS transmission resources, then data transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting HARQ process IDs based on time domain information (slot indices) and period parameters. Instead of using fixed HARQ process ID assignments, the system calculates HARQ process IDs using formulas that incorporate the slot index of the current transmission and the configured period, allowing the HARQ process ID to change with each transmission opportunity while maintaining a manageable configuration structure.
2Reliability
If HARQ process ID determination methods are standardized, then system reliability is improved, but adaptability deteriorates
Solution Approach 1:
The patent implements dynamics by making the HARQ process ID determination adaptive rather than static. The system uses configurable parameters (period, slot index-based calculations) that allow the HARQ process ID to dynamically adjust based on the specific transmission context. This enables the same basic mechanism to adapt to different transmission scenarios, resource configurations, and timing requirements while following a standardized determination approach.
3Ease of operation
If HARQ process ID determination is simplified, then ease of operation is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent applies self-service by enabling the terminal to autonomously determine its own HARQ process ID using pre-configured parameters and the current slot index. The terminal calculates the HARQ process ID locally without requiring explicit network assignment for each transmission, reducing signaling overhead and simplifying the operation while maintaining efficient resource utilization. The network only needs to configure the basic parameters, and the terminal handles the detailed HARQ process identification.
Data Source
AI summary
An information processing method and apparatus, a storage medium, a processor and an electronic device are provided. The method includes: receiving configuration information from a network side device, the configuration information being used for configuring a sidelink configured grant transmission resource, and the sidelink configured grant transmission resource being a transmission resource in a resource pool; determining, on the basis of the configuration information, time-domain information corresponding to the sidelink configured grant transmission resource; and according to the time-domain information corresponding to the sidelink configured grant transmission resource, determining a first hybrid automatic repeat request process ID.