5G Device Sleep State Control for DSS Power Reduction
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Solution Overview
Problem
In the context of 5G communication systems, electronic devices face issues with unnecessary power consumption and heating due to monitoring downlink control data across all subframes, including those not used for NR resource allocation in Dynamic Spectrum Sharing (DSS) scenarios.
Innovation Solution
The electronic device is equipped with a communication processor that identifies information related to a second communication network, such as LTE, which shares a frequency band with a first communication network, like NR. It then determines a time interval allocated for NR data transmission and controls the device to operate in a sleep state during that interval, thereby reducing unnecessary power consumption and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device monitors downlink control data in all subframes including those not used for NR resource allocation, then the device can detect all potential control information, but unnecessary power consumption and heating occur
Solution Approach 1:
The base station performs preliminary action by transmitting indication information in advance to inform the terminal about the location of MBSFN subframes. This allows the terminal to proactively identify which subframes contain NR data and which do not, enabling the terminal to skip monitoring in non-MBSFN subframes without losing any control information. The preliminary information provision resolves the contradiction by eliminating unnecessary monitoring while maintaining complete detection capability.
Solution Approach 2:
The invention extracts and separates the MBSFN subframe locations from the overall subframe structure through dedicated indication information. By extracting this specific information about which subframes contain NR data, the system allows the terminal to exclude (take out) those subframes from monitoring, thereby reducing power consumption while maintaining reliable control data detection in the remaining subframes.
2Loss of information
If the electronic device monitors downlink control data in all subframes, then no control information is missed, but heating problems arise due to continuous operation
Solution Approach 1:
The base station provides preliminary information about MBSFN subframe locations before the terminal needs to monitor for control data. This advance notification allows the terminal to pre-determine its monitoring schedule, avoiding unnecessary operation in non-MBSFN subframes. The continuous operation that causes heating is eliminated while ensuring no control information is missed, as the terminal monitors all MBSFN subframes without exception.
Solution Approach 2:
The invention transforms continuous monitoring into periodic monitoring by identifying specific MBSFN subframes as monitoring points. Instead of monitoring every subframe continuously (which generates heat), the terminal periodically monitors only at MBSFN subframe locations. This periodic action maintains complete control information detection while significantly reducing operational time and associated heating.
3Productivity
If the electronic device monitors all subframes for control data, then comprehensive resource allocation is ensured, but unnecessary power consumption occurs in non-MBSFN subframes
Solution Approach 1:
The base station performs preliminary action by transmitting indication information that identifies MBSFN subframe locations in advance. This allows the terminal to efficiently allocate its monitoring resources only to subframes that actually contain NR data. The preliminary information enables the terminal to achieve comprehensive resource allocation monitoring while avoiding energy-wasting monitoring in non-MBSFN subframes, thus resolving the contradiction between productivity and energy consumption.
Solution Approach 2:
The invention applies local quality by making the monitoring behavior specific to different subframe types. Instead of uniform monitoring across all subframes, the terminal adopts different monitoring strategies: full monitoring for MBSFN subframes (where NR data exists) and no monitoring for non-MBSFN subframes (where NR data does not exist). This localized differentiation ensures resource allocation efficiency is maintained where needed while eliminating unnecessary power consumption elsewhere.
Data Source
AI summary
An electronic device is provided. The electronic device includes a communication processor, at least one Radio Frequency Integrated Circuit (RFIC) connected thereto, and an antenna connected through the at least one RFIC and configured to transmit and receive a signal corresponding to at least one communication network. The communication processor is configured to control the electronic device to receive a signal corresponding to a first communication network from a first base station corresponding to the first communication network supporting a first frequency band through the antenna, identify information related to a second communication network supporting a second frequency band including at least a portion of the first frequency band, identify a time interval allocated for transmission of data corresponding to the second communication network on the basis of the information related to the second communication network, and operate in a sleep state in the identified time interval.