SLPP Session Identifier for Accurate Sidelink Initiator Detection

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Solution Overview

Problem

Existing sidelink positioning protocols struggle to accurately identify the initiator of a session when multiple user equipment (UE) participants are involved, leading to ambiguity and reduced positioning accuracy.

Innovation Solution

The implementation of a sidelink positioning protocol (SLPP) message that includes a first session identifier to uniquely identify the session initiator, allowing for clear distinction among participants, thereby enhancing the accuracy of information interaction and positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple user equipment participants are involved in a sidelink positioning session, then the positioning capability is enhanced, but the ability to accurately identify the session initiator deteriorates due to ambiguity

Engineering Contradiction:
Improvepositioning capabilityVSAvoidinitiator identification accuracy
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The session identifier is segmented into multiple components: a session management portion for managing the positioning session and an initiator identification portion for identifying the session initiator. This segmentation allows the system to maintain both multi-participant positioning capability and accurate initiator identification by assigning different functional segments to different purposes within the same message structure.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a session identifier is included in SLPP messages, then the session management is improved, but the message complexity increases

Engineering Contradiction:
Improvesession managementVSAvoidmessage structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The session identifier is designed with multi-functionality to serve both session management and initiator identification purposes simultaneously. By embedding multiple pieces of information within a single session identifier field, the patent reduces the need for separate message elements, thereby improving session management reliability while minimizing the increase in message complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4712607A1Information processing method and apparatus, communication device, and storage medium
Publication Date: 2026.03.18 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP4712607A1 patent drawingFigure 1A~1B
  • EP4712607A1 patent drawingFigure 2A~2C
  • EP4712607A1 patent drawingFigure 3A~3C

AI summary

Embodiments of the present disclosure provide an information processing method and apparatus, a communication device, and a storage medium. The method executed by a sender comprises: sending a sidelink positioning protocol (SLPP) message, wherein the SLPP message comprises a first session identifier, and the first session identifier is used for identifying a session and determining an initiator of the session.