PRS Resource Indication for Accurate Sidelink Positioning
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Solution Overview
Problem
There is a lack of a PRS resource indication method in sidelink communication, hindering positioning research on sidelink communication.
Innovation Solution
A PRS resource indication method is introduced, where resource indication information is sent by a sending UE to a receiving UE, indicating the position of PRS and/or PSSCH resources, allowing the receiving UE to determine the target position for PRS reception based on preset information, including the relationship between PSSCH and PRS resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a PRS resource indication method is not established in sidelink communication, then positioning research cannot be conducted on sidelink, but the system remains incomplete for V2X communication requirements
Solution Approach 1:
The patent introduces resource indication information as an intermediary mechanism that enables positioning functionality in sidelink communication. This indication information acts as a mediator between the PRS resources and receiving UEs, allowing positioning research to be conducted without requiring complete system redesign. The indication information carries necessary resource position details that facilitate positioning while maintaining system reliability.
Solution Approach 2:
The patent applies preliminary action by pre-defining the relationship between PSSCH resources and PRS resources through preset information. This preliminary configuration allows receiving UEs to determine target PRS resource positions efficiently during actual positioning operations, enabling positioning research to proceed without ad-hoc resource allocation decisions.
2Measurement precision
If resource indication information is sent to indicate PRS resource position, then receiving UE can accurately receive PRS, but additional signaling overhead is introduced
Solution Approach 1:
The patent makes the resource indication information multi-functional by enabling it to indicate both PRS resource positions and PSSCH resource positions using the same signaling mechanism. This universal approach allows a single indication message to serve multiple purposes, reducing overall signaling overhead while maintaining accurate PRS reception capability.
Solution Approach 2:
The patent changes the parameter representation by using preset information to define relationships between resource types. Instead of transmitting complete resource position information for both PRS and PSSCH separately, the system transmits indication information that references preset relationships, thereby reducing signaling overhead while preserving measurement precision.
3Productivity
If preset information is used to define relationship between PSSCH and PRS resources, then resource allocation becomes more efficient, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the relationship between PSSCH and PRS resources through preset information before actual communication occurs. This preliminary configuration enables efficient resource allocation during runtime without requiring complex real-time calculations, as the relationships are already established and can be directly referenced.
Solution Approach 2:
The patent uses copying by having receiving UEs store and reference preset information that defines resource relationships. Instead of recalculating resource positions during communication, UEs copy the predetermined relationships from configuration data and apply them during PRS reception, simplifying the runtime processing while maintaining allocation efficiency.
Data Source
AI summary
A Positioning Reference Signal (PRS) resource indication method and apparatus in sidelink communication, a storage medium and a terminal are provided. The method includes: sending resource indication information to a receiving User Equipment (UE), to enable the receiving UE to acquire a target position of a PRS resource based on the resource indication information and preset information to receive a PRS at the target position; wherein the resource indication information indicates a position of the PRS resource and/or a position of a Physical Sidelink Shared Channel (PSSCH) resource, and the preset information includes at least a relationship between the PSSCH resource and the PRS resource.