WLAN Device Positioning with Preallocated Uplink Resources

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Solution Overview

Problem

Existing WLAN positioning methods suffer from poor timeliness due to the need for allocating radio resources before positioning can occur, leading to inefficient use of air interface resources.

Innovation Solution

A method where a WLAN device obtains an uplink scheduling parameter from another device to allocate radio resources, allowing it to measure positioning data without sending additional scheduling signals, thereby reducing the number of scheduling signals needed and improving timeliness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a WLAN device sends uplink scheduling signals to allocate radio resources to to-be-positioned WLAN devices, then the positioning can be performed with proper resource allocation, but the positioning timeliness deteriorates because the WLAN device can only position after sending the scheduling signals

Engineering Contradiction:

Improvepositioning timelinessVSAvoidpositioning delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The WLAN device obtains uplink scheduling parameters from another WLAN device in advance, before the actual positioning measurement. This preliminary acquisition of scheduling information allows the device to prepare for positioning without waiting for its own scheduling signal transmission, thereby reducing positioning delay while ensuring proper resource allocation is in place

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Another WLAN device acts as an intermediary by sending uplink scheduling parameters to the positioning WLAN device. This intermediary mechanism allows the positioning device to obtain necessary scheduling information without having to transmit its own scheduling signals, thus improving timeliness while maintaining reliable resource allocation through the mediator's coordination

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a WLAN device sends uplink scheduling signals to allocate radio resources, then proper resource allocation is achieved, but air interface overheads increase due to the additional signaling

Engineering Contradiction:

Improveresource allocationVSAvoidair interface overheads

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The uplink scheduling parameter transmission function is extracted from the positioning WLAN device and performed by another WLAN device instead. This extraction eliminates the need for the positioning device to send its own scheduling signals, thereby reducing air interface overheads while maintaining proper resource allocation through the extracted function being performed by the other device

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The WLAN device obtains a copy of the uplink scheduling parameters from another WLAN device's trigger frame. This copying approach allows the device to acquire necessary scheduling information without generating additional signaling overhead, as it simply receives and uses the parameters already transmitted by the other device for resource allocation

Inventive Principle:

Principle #26Copying

Data Source

PatentUS12452861B2Positioning method and apparatus, WLAN device, and storage medium

Publication Date: 2025.10.21 HUAWEI TECH CO LTD

AI summary

A positioning method and a WLAN device in the field of positioning technologies includes obtaining by the WLAN device an uplink scheduling parameter sent by another WLAN device to a plurality of to-be-positioned WLAN devices, where the uplink scheduling parameter indicates radio resources allocated to the plurality of to-be-positioned WLAN devices; receiving uplink signals by the WLAN device; and measuring respective positioning data of the plurality of to-be-positioned WLAN devices by the WLAN device based on the radio resources of the plurality of to-be-positioned WLAN devices and the received uplink signals.