Base Station Sleep Mode Beacon and Wakeup Mechanism

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Solution Overview

Problem

Wireless communication base stations face inefficiencies in power management, as they continue to transmit broadcast signals even when no user equipment is connected, leading to unnecessary energy consumption.

Innovation Solution

Implementing a sleep mode for base stations when no user equipment is connected, using sensor fusion and machine learning algorithms to detect the presence of user equipment, and employing beacon signals and wakeup responses to efficiently resume transmissions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If base stations continue to transmit broadcast signals continuously, then communication availability is maintained, but power consumption increases unnecessarily

Engineering Contradiction:

Improvecommunication availabilityVSAvoidbase station power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The base station transitions from continuous transmission to periodic operation by entering sleep modes during periods without connected UEs and only activating transmissions when needed, as indicated by the patent title and summary describing sleep mode and wakeup mechanisms

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The base station autonomously monitors its own operational state and decides when to enter sleep mode or wakeup based on the presence or absence of connected UEs, eliminating the need for external control signals to manage power states

Inventive Principle:

Principle #25Self-service

2Use of energy by moving object

If base stations enter sleep mode to save energy, then power consumption is reduced, but communication responsiveness may be delayed

Engineering Contradiction:

Improvebase station power consumptionVSAvoidwakeup response time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The base station performs preliminary monitoring of UE connection status and proactively enters sleep mode before actual communication is needed, while maintaining the ability to quickly wakeup when a UE attempts to connect, thus preparing the system in advance for efficient operation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The base station dynamically adjusts its operational state between active and sleep modes based on real-time conditions (presence of connected UEs), allowing the system to adapt its power consumption and responsiveness characteristics to current operational needs

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11770765B2Radio base station sleep mode-beacon and wakeup

Publication Date: 2023.09.26 QUALCOMM INC

AI summary

A method of wireless communications by a user equipment (UE) includes transmitting a wakeup message to awaken a base station from a sleep mode. The method also includes communicating with the base station after the base station awakens. A method of wireless communications by a base station includes entering a sleep mode when no user equipments (UEs) are connected to the base station. The method also includes receiving a signal from a UE to awaken from the sleep mode. The method further includes resuming signal transmissions after waking up from the sleep mode.