Sidelink Positioning Protocol Layer for Network Control

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Solution Overview

Problem

Current Long Term Evolution Positioning Protocol (LPP) systems cannot control terminals to perform sidelink (SL) positioning over the air interface.

Innovation Solution

Introducing a new protocol layer, referred to as the Sidelink Positioning Protocol (SLPP) layer, into the air interface protocol stack architecture to enable SL positioning by generating and sending or receiving SL positioning messages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the existing LPP protocol is used for air interface positioning, then air interface positioning functions are supported, but SL positioning cannot be controlled over the air interface

Engineering Contradiction:

Improvepositioning protocol adaptabilityVSAvoidprotocol stack complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the positioning protocol functionality by introducing a dedicated SLPP layer for sidelink positioning, separate from the existing LPP layer for air interface positioning. This allows independent control and management of different positioning types without interfering with each other, resolving the contradiction between protocol adaptability and system complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The SLPP layer acts as an intermediary between the application layer and the air interface for sidelink positioning operations. It mediates the positioning control signals, enabling the network side device to control terminal positioning over the air interface while maintaining separation from the existing LPP protocol stack

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a new protocol layer is introduced for SL positioning, then SL positioning control is enabled, but protocol stack complexity increases

Engineering Contradiction:

ImproveSL positioning supportVSAvoidprotocol stack structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The SLPP layer is designed with multi-functionality to handle various sidelink positioning operations including capability exchange, assistance data transmission, and location information exchange. This universal design enables comprehensive SL positioning support while consolidating functionality in a single dedicated layer, managing the complexity effectively

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements a nested protocol stack structure where the SLPP layer is positioned between the application layer and the existing LPP/air interface layers. This nesting allows the new functionality to be integrated into the existing architecture without complete redesign, enabling SL positioning control while maintaining compatibility with the existing protocol stack

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS20250193836A1Positioning message transmission method, terminal, and network side device

Publication Date: 2025.06.12 VIVO MOBILE COMM CO LTD

AI summary

A positioning message transmission method includes at least one of the following: generating, by a first protocol layer of a network side device, a first positioning message, the first positioning message being used for sidelink (SL) positioning; and sending, by the first protocol layer of the network side device, the first positioning message; or receiving, by the first protocol layer of the network side device, the first positioning message.