NR Base Station SSB Transmission Control for Energy Saving
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Solution Overview
Problem
NR base stations experience high energy consumption due to the need for large bandwidth, numerous antenna units, and continuous transmission of synchronization signal blocks, even during periods of no service, leading to reduced energy efficiency.
Innovation Solution
The proposed solution involves an information transceiving method where a first network device transmits third indication information to a second network device, indicating whether to stop or resume transmitting synchronization signal blocks or physical broadcast channels, allowing for dynamic energy-saving states without disrupting user equipment operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If synchronization signal blocks are continuously transmitted to maintain downlink synchronization, then terminal equipment can maintain synchronization and perform measurements, but energy consumption of the base station increases significantly
Solution Approach 1:
The patent implements periodic transmission of synchronization signal blocks instead of continuous transmission. The base station transmits SSBs at predetermined intervals (e.g., every 20ms or 40ms) and stops transmission during inactive periods. This periodic action allows terminal equipment to maintain synchronization and perform measurements at intervals while significantly reducing base station energy consumption during low-traffic periods.
Solution Approach 2:
The patent introduces dynamic control of SSB transmission based on service status. The base station dynamically switches between transmission and non-transmission states according to traffic conditions, terminal requirements, and network configuration. This dynamic approach enables the system to adapt transmission behavior to actual needs, maintaining synchronization when necessary while saving energy when not required.
2Use of energy by moving object
If all cells stop transmitting synchronization signal blocks for energy saving, then energy consumption is reduced, but terminal equipment loses downlink synchronization and channel estimation signals
Solution Approach 1:
The patent applies local quality by allowing different cells within the same base station to have different transmission states. Some cells continue transmitting SSBs while others stop, based on local traffic conditions and terminal requirements. This enables energy saving in cells without service while maintaining synchronization in cells that still need to serve terminals.
Solution Approach 2:
The patent implements preliminary action by notifying terminal equipment in advance before stopping SSB transmission. The base station sends indication information to terminals about upcoming transmission suspensions, allowing terminals to prepare for synchronization updates from other cells or to adjust their measurement strategies before the actual suspension occurs.
3Use of energy by moving object
If serving cells stop transmitting synchronization signal blocks, then energy consumption is reduced, but terminal equipment cannot perform measurements and must be handed over to neighboring cells
Solution Approach 1:
The patent introduces an intermediary mechanism where the network device provides indication information to terminal equipment about SSB transmission status. This indication acts as a mediator that allows terminals to understand when their serving cell will stop transmission, enabling them to proactively switch to neighboring cells or adjust measurements without service interruption. The intermediary information facilitates smooth transitions and maintains service continuity.
Solution Approach 2:
The patent implements feedback mechanisms where terminal equipment reports measurement results and service status to the base station. The base station uses this feedback to determine whether to stop or continue SSB transmission in different cells. This feedback loop ensures that energy-saving decisions are made based on actual service requirements, preventing unnecessary handovers and maintaining productivity.
Data Source
AI summary
An information transceiving apparatus, applicable to a first network device to which a first cell belongs, includes: a transmitter configured to transmit third indication information to a second network device, the third indication information being used to indicate the first network device to transmit a first synchronization signal block (SSB) of the first cell that should be transmitted.