Resource Pool Zone Mapping for V2X HARQ Feedback
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Solution Overview
Problem
Current vehicle-to-everything (V2X) communication systems face challenges in efficiently configuring multiple zone configurations and mapping resource pools to zones for Hybrid Automatic Repeat Request (HARQ) transmission, which affects the feedback channel and overall communication efficiency.
Innovation Solution
The implementation of a resource pool (RP) to zone mapping and hybrid automatic repeat request (HARQ) transmission mechanism, enabling multiple zone configurations and configuring a mapping between a zone and one or more RPs to determine transmission of HARQ feedback and feedback channels in V2X communication systems, utilizing various physical layer modulation and transmission mechanisms such as CDMA, OFDMA, and OFDM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple zone configurations are implemented for HARQ transmission, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The system segments the communication coverage area into multiple zones, each with its own resource pool configuration for HARQ transmission. This segmentation allows independent optimization of transmission parameters for different zones, improving reliability while managing complexity through modular zone-based organization
Solution Approach 2:
The patent implements dynamic zone configuration where the network can flexibly allocate and reconfigure resource pools across different zones based on real-time traffic conditions and channel quality. This dynamic adaptation enables the system to optimize reliability without being locked into rigid complex configurations
2Productivity
If resource pool to zone mapping is configured, then transmission efficiency is improved, but configuration complexity increases
Solution Approach 1:
The resource pool configuration structure serves multiple functions: it defines time-frequency resources, specifies HARQ parameters, identifies target zones, and establishes mapping relationships. This multi-functionality consolidates what would otherwise be separate configuration mechanisms into a single efficient structure, improving transmission efficiency without proportionally increasing complexity
Solution Approach 2:
The patent introduces a resource pool as an intermediary structure that mediates between the network's scheduling decisions and the actual HARQ transmission in different zones. This intermediary layer simplifies the configuration by providing a standardized interface for resource allocation and mapping across multiple zones
3Reliability
If HARQ feedback transmission is optimized, then communication reliability is improved, but feedback channel complexity increases
Solution Approach 1:
The patent merges the HARQ feedback transmission with the existing downlink control information channels in the resource pool configuration. By combining feedback transmission with the established control channel infrastructure, the system improves feedback reliability without creating separate complex feedback channels, leveraging the existing channel's error correction and scheduling capabilities
Data Source
AI summary
A first wireless device receives, from a base station, configuration parameters of a resource pool of a sidelink. The configuration parameters indicate a primary zone configuration, a secondary zone configuration, and a first primary zone identifier of a first primary zone. a second primary zone identifier of a second primary zone in which the first wireless device is positioned, is determined based on a geographic location of the first wireless device using the primary zone configuration. A secondary zone identifier of a secondary zone in which the first wireless device is positioned, is determined based on the geographic location using the secondary zone configuration. The first wireless device transmits control information indicating the secondary zone identifier to second wireless device(s). The control information is transmitted via the resource pool, in response to the second primary zone identifier being the same as the first primary zone identifier.