Radio Node Power Save via Grouped Paging Resources

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Solution Overview

Problem

Wireless communications networks face high power consumption in radio network nodes due to continuous transmission of reference signals, especially during low activity periods, leading to inefficient energy usage.

Innovation Solution

Implementing a power save mode in radio network nodes by grouping paging occasions for wireless devices, allowing reference signals to be transmitted only in the vicinity of common paging resources, reducing unnecessary transmissions and extending inactive periods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If reference signals are transmitted continuously with default periodicity to ensure wireless devices can perform measurements and synchronize, then synchronization reliability is improved, but energy consumption increases

Engineering Contradiction:

Improvesynchronization reliabilityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies periodic action by transitioning from continuous reference signal transmission to periodic transmission aligned with grouped paging occasions. Reference signals are transmitted only in the vicinity of common paging resources rather than continuously, reducing energy consumption while maintaining synchronization reliability for paging-related operations

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent implements dynamics by making the reference signal transmission pattern adaptive to network activity conditions. The system dynamically adjusts between continuous transmission during normal operation and periodic transmission aligned with paging occasions during low activity periods, optimizing the balance between synchronization reliability and energy consumption

Inventive Principle:

Principle #15Dynamics

2Reliability

If reference signals are transmitted with default periodicity to allow wireless devices to monitor paging resources, then paging reliability is improved, but power consumption increases

Engineering Contradiction:

Improvepaging reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by stationary object

Solution Approach 1:

The patent applies merging by grouping paging occasions for multiple wireless devices into common paging resources. This consolidation allows reference signals to be transmitted only in the vicinity of these grouped paging occasions rather than continuously, reducing power consumption while maintaining paging reliability through coordinated transmission timing

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements periodic action by aligning reference signal transmission with the periodic grouping of paging occasions. During low activity periods, reference signals are transmitted periodically at intervals corresponding to the grouped paging resource schedule, reducing overall transmission frequency while ensuring paging reliability

Inventive Principle:

Principle #19Periodic action

3Reliability

If the radio network node remains continuously active to serve wireless devices, then service availability is improved, but energy consumption increases

Engineering Contradiction:

Improveservice availabilityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies periodic action by enabling the radio network node to enter inactive periods between grouped paging occasions during low activity periods. The node remains periodically active to transmit reference signals and handle paging, but can remain inactive between these periods, reducing energy consumption while maintaining service availability for paging-related operations

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent implements dynamics by making the radio network node's operational state adaptive to network conditions. The node dynamically transitions between active and inactive states based on network activity levels and paging schedules, optimizing the balance between service availability and energy consumption

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20230171695A1Methods for power management in a wireless communications network, network nodes and wireless devices

Publication Date: 2023.06.01 SONY GROUP CORP

AI summary

A method is disclosed, performed in a radio network node, for power management in a wireless communications network. The radio network node is transmitting reference signals to WDs in conjunction with a first set of paging resources that the WDs are monitoring for paging. The method comprises: upon determining that a radio network node power save mode is to be activated, transmitting, to the WDs, an indication instructing the WDs to monitor paging in a second set of paging resources associated with the radio network node power save mode. The method further comprises transmitting, to the WDs, synchronization signals associated with the second set of paging resources that the WDs are instructed to monitor for paging.