Wireless Device Search Space Set Group Switching

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently managing control channel monitoring across multiple search space set groups, particularly in dynamic bandwidth scenarios, which affects power consumption and scheduling opportunities.

Innovation Solution

The proposed solution involves configuring wireless devices with at least two search space set groups and a timer to switch control channel monitoring between these groups based on explicit or implicit signaling, such as DCI format 2_0, to optimize monitoring efficiency and reduce power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If wireless devices continuously monitor control channels across all search space set groups, then scheduling opportunities are maximized, but power consumption increases

Engineering Contradiction:

Improvescheduling opportunitiesVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic switching between different search space set groups based on timer expiration or signaling indications. The wireless device transitions from monitoring a first search space set group to a second search space set group, allowing the monitoring behavior to adapt dynamically rather than continuously monitoring all groups, thus reducing power consumption while maintaining scheduling opportunities

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent introduces timer-based periodic switching mechanisms where the wireless device monitors control channels in different search space set groups at periodic intervals determined by timer configurations. This periodic action allows the device to switch between monitoring groups systematically, ensuring scheduling opportunities are captured while avoiding continuous monitoring of all groups simultaneously, thereby reducing power consumption

Inventive Principle:

Principle #19Periodic action

2Loss of energy

If wireless devices switch between search space set groups frequently, then power savings increase, but control channel monitoring reliability may deteriorate

Engineering Contradiction:

Improvepower savingsVSAvoidcontrol channel monitoring reliability

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The patent incorporates feedback mechanisms through network signaling (such as DCI format 2_0) that provide indications to wireless devices about when to switch between search space set groups. This feedback ensures that switching decisions are coordinated with network conditions, maintaining reliability while achieving power savings through controlled switching based on network directives rather than arbitrary transitions

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent configures timers in advance that determine when switching between search space set groups should occur. These pre-configured timers ensure that switching happens at predetermined intervals or conditions, allowing the system to prepare for transitions beforehand and maintain reliable monitoring coverage across different search space groups without abrupt or uncoordinated switching that could compromise reliability

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If multiple search space set groups are configured, then monitoring flexibility increases, but device complexity increases

Engineering Contradiction:

Improvemonitoring flexibilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides control channel monitoring into multiple distinct search space set groups, where each group can be independently configured and activated. This segmentation allows the wireless device to monitor only the relevant search space set group at any given time rather than all groups simultaneously, achieving monitoring flexibility while managing device complexity through structured division of monitoring tasks

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a universal switching mechanism that can apply across multiple search space set groups using common timer configurations and signaling protocols. This multi-functional approach allows the same switching framework to manage transitions between different groups, reducing the need for separate complex control logic for each group and thereby managing device complexity while maintaining flexibility

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12267711B2Method for switching control channel monitoring of search space set group

Publication Date: 2025.04.01 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method, system and apparatus are disclosed for switching control channel monitoring of search space set group. According to one or more embodiments, a network node is provided. The network node includes processing circuitry configured to: configure a wireless device with at least two search space set groups, SSSGs; configure the wireless device to switch control channel monitoring between the at least two SSSGs; and optionally cause transmission of signaling on the control channel in accordance with the configured switching of the control channel monitoring.