Base Station Wake-Up Signaling for Energy-Saving SIB1 Broadcast
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Solution Overview
Problem
Existing mobile communication networks face challenges in reducing power consumption of base station entities during periods of low usage without compromising user experience.
Innovation Solution
A method where user equipment transmits a predefined uplink radiofrequency signal to activate specific base station entities from an energy-saving mode, using activation configuration information to selectively transmit system information block 1 only when needed, thereby optimizing power usage and reducing unnecessary transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base station entities continuously transmit system information block 1, then user service availability is maintained, but power consumption increases
Solution Approach 1:
The base station entity transmits system information block 1 periodically at predetermined intervals instead of continuously. During energy-saving mode, the base station refrains from transmission for extended periods, then activates to transmit SIB1 for a specific duration, followed by another idle period. This periodic transmission pattern maintains user service availability while significantly reducing power consumption compared to continuous transmission.
2Use of energy by moving object
If base station entities operate in energy-saving mode, then power consumption is reduced, but user equipment cannot access system information
Solution Approach 1:
User equipment is pre-configured with activation configuration information that includes identification of specific uplink random access channel signals associated with energy-saving mode base stations. This preliminary configuration enables user equipment to proactively activate base stations by transmitting the appropriate random access channel signal when system information is needed, ensuring information availability while maintaining energy-saving operation.
3Loss of information
If base station entities are activated frequently, then system information block 1 availability is maintained, but energy-saving benefits are reduced
Solution Approach 1:
The system implements a feedback mechanism where user equipment monitors the availability of system information block 1 and only activates base station entities when actually needed. The activation configuration information enables user equipment to identify and activate specific base stations based on their energy-saving status. This feedback-driven activation ensures system information availability is maintained only when necessary, preventing unnecessary energy consumption during frequent activations.
Data Source
Figure 1~2
AI summary
The invention relates to a method for using a user equipment with a mobile communication network and/or for an energy-saving operation of the mobile communication network, wherein the mobile communication network comprises a radio access network comprising a plurality of base station entities, wherein a specific base station entity is operated, in a first point in time, in an energy-saving mode and wherein the specific base station entity is activated again, in a subsequent second point in time, from the energy-saving mode by means of a predefined uplink radiofrequency signal transmitted by the user equipment, wherein, in the energy-saving mode, the specific base station entity refrains from transmitting system information block 1 (SIB1) and starts to transmit system information block 1 (SIB1) again regularly while activated from the energy-saving mode, wherein the predetermined uplink radiofrequency signal corresponds to a specific uplink random access channel signal assigned to the specific base station entity based on the content of a selection indication parameter, wherein, in order to operate the mobile communication network, at least partly, in an energy-saving operation, the method comprises the following steps: -- in a first step, the user equipment comprises or receives activation configuration information, the activation configuration information comprising a plurality of pieces of assignment information, different pieces of assignment information being related to different contents of the selection indication parameter, wherein a specific piece of assignment information indicates a specific uplink random access channel signal as being assigned to a specific content of the selection indication parameter, -- in a second step, the user equipment transmits, based on the specific content of the selection indication parameter in one of the pieces of assignment information, the corresponding specific uplink random access channel signal in order to activate the specific base station entity from the energy-saving mode.