Periodic Advertisement Subframe Allocation by Transmit Power

Solution Overview

Problem

Existing wireless communication systems face inefficiencies in subframe allocation due to varying transmit power requirements among peripheral devices, leading to unnecessary power consumption and potential RF interference, particularly in systems like electronic shelf label (ESL) networks.

Innovation Solution

Implementing subframe allocation based on transmit power determinations to group peripheral devices with similar minimum transmit power requirements, allowing the central device to adjust its transmit power for each subframe group accordingly, thereby optimizing power usage and reducing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the central device uses a fixed high transmit power for all subframes, then all peripheral devices can be reached reliably, but power consumption increases and RF interference is generated

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system segments peripheral devices into different subframe groups based on their minimum transmit power requirements. The central device divides the communication resources by creating multiple subframe groups (first subframe group for devices requiring lower power, second subframe group for devices requiring higher power), allowing targeted power transmission to each group rather than using maximum power for all devices continuously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The central device applies different transmit power levels to different subframe groups locally. Instead of using a uniform high power level across all subframes, the system transmits at a first (lower) power level for the first subframe group and a second (higher) power level for the second subframe group, matching the actual needs of each group to minimize overall power consumption while maintaining reliable communication.

Inventive Principle:

Principle #3Local quality

2Reliability

If the central device uses a fixed high transmit power for all subframes, then all peripheral devices can be reached reliably, but RF interference increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidRF interference

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The system segments peripheral devices into different subframe groups based on their minimum transmit power requirements. The central device divides the communication resources by creating multiple subframe groups (first subframe group for devices requiring lower power, second subframe group for devices requiring higher power), allowing targeted power transmission to each group rather than using maximum power for all devices continuously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The central device applies different transmit power levels to different subframe groups locally. Instead of using a uniform high power level across all subframes, the system transmits at a first (lower) power level for the first subframe group and a second (higher) power level for the second subframe group, matching the actual needs of each group to minimize overall power consumption while maintaining reliable communication.

Inventive Principle:

Principle #3Local quality

3Device complexity

If subframe allocation is not based on transmit power requirements, then device complexity is reduced, but power consumption efficiency decreases

Engineering Contradiction:

Improveallocation system complexityVSAvoidpower consumption efficiency

Core Design Contradiction:

Device complexityVSLoss of energy

Solution Approach 1:

The system performs preliminary classification of peripheral devices into different subframe groups based on their minimum transmit power requirements before actual communication occurs. The central device determines these requirements in advance and assigns devices to appropriate subframe groups (first group for lower power, second group for higher power), so that when transmissions occur, the power levels are already optimized for each group, improving energy efficiency without adding complex real-time control mechanisms.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12588014B2Periodic advertisement subframe allocation based on transmit power

Publication Date: 2026.03.24 QUALCOMM INC

AI summary

Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. For example, a process can include determining, by a network entity, a transmit power value for communicating with a wireless communication device. The network entity can select a subframe of a plurality of subframes, wherein the subframe is selected based on the transmit power value and a respective subframe transmit power value associated with the subframe, and wherein the respective subframe transmit power value is greater than or equal to the transmit power value. The process can further include allocating the wireless communication device to the subframe and transmitting a periodic advertisement (PA) to a plurality of wireless communication devices using the subframe and the respective subframe transmit power value, wherein the plurality of wireless communication devices includes the wireless communication device.