Sidelink Control Signaling for SL PRS Resource Allocation
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Solution Overview
Problem
Existing sidelink positioning reference signal (SL PRS) configuration, activation, invalidation, and triggering mechanisms are not adequately supported by existing sidelink control information (SCI), necessitating improved resource allocation and indication methods.
Innovation Solution
Introduce a new resource allocation and indication method for SL PRS by establishing a relationship between first control information and the first signal, utilizing fields such as source and destination identifiers, and determining the type of positioning reference signal to effectively configure and manage SL PRS resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing sidelink control information (SCI) is used for SL PRS configuration, then the system maintains backward compatibility with existing sidelink protocols, but the configuration, activation, invalidation and triggering of SL PRS cannot be adequately supported
Solution Approach 1:
The patent segments the control information by creating a new SCI format specifically for positioning purposes. This new format is divided into multiple fields including resource allocation fields, SL PRS configuration fields, and triggering fields, allowing independent control of different positioning parameters while maintaining compatibility with existing data transmission SCI formats
Solution Approach 2:
The patent introduces a new SCI format as an intermediary between the existing sidelink protocol and the positioning requirements. This intermediate layer translates positioning requirements into control information that can be processed by existing sidelink mechanisms, bridging the gap between legacy protocols and new positioning functionality
2Adaptability or versatility
If a new control information format is introduced for SL PRS, then the configuration and management of SL PRS resources is improved, but the device complexity increases
Solution Approach 1:
The patent designs the new SCI format to serve multiple functions: resource allocation for SL PRS, configuration of positioning parameters, activation and invalidation control, and triggering of positioning measurements. By consolidating these functions into a single control message format, the patent reduces the need for multiple separate signaling mechanisms, thereby limiting the increase in device complexity
Solution Approach 2:
The patent introduces dynamic fields in the SCI format that can be selectively activated or deactivated based on positioning requirements. The resource allocation fields and configuration fields can be dynamically adjusted to match the specific positioning scenario, allowing the system to optimize between functionality and complexity on demand
Data Source
AI summary
Disclosed in the present application are a method and apparatus used in a node for wireless communication. The method comprises: a first node sending first control information and a first signal, wherein the first control information comprises at least one of a source identification domain and a destination identification domain, the source identification domain being used for indicating the first node, and the destination identification domain being used for indicating a target receiver of the first signal; and whether the first control information is borne on a first PSCCH or on a first PSSCH is related to the first signal. The present application effectively implements the resource allocation and indication of SL PRSes and SL data, and improves the utilization rate of effective resources.