Synchronization Signal Block Reconfiguration for Lower Network Power
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Solution Overview
Problem
The overhead of periodic synchronization signal block (SSB) transmissions is a significant source of power consumption in wireless communication networks, necessitating efficient techniques for synchronization signaling while maintaining key performance parameters.
Innovation Solution
The implementation of different periodicities for sequences of synchronization signal blocks (SSBs) and primary synchronization signals (PSSs), allowing for reduced SSB transmissions and efficient power utilization by indicating SSB presence through additional signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic synchronization signal block (SSB) transmissions are performed, then synchronization signaling is provided to user equipment, but network power consumption increases
Solution Approach 1:
The patent applies periodic action by implementing different periodicities for SSB transmissions versus PSS transmissions. SSBs are transmitted at a first periodicity while PSSs are transmitted at a second periodicity that is different (typically shorter), allowing the system to maintain synchronization signaling reliability while reducing the overall transmission overhead and power consumption compared to transmitting both at the same frequent interval
Solution Approach 2:
The patent changes the temporal parameter (periodicity) of different signal types. By assigning different periodicity values to SSB and PSS transmissions, the system optimizes the balance between providing adequate synchronization signaling and minimizing power consumption, allowing SSBs to be transmitted less frequently while maintaining network functionality
2Use of energy by stationary object
If SSB transmissions are reduced to lower power consumption, then network power consumption decreases, but latency may increase
Solution Approach 1:
The patent uses periodic action with multiple periodicity levels to resolve the latency-power tradeoff. By transmitting PSS at a shorter periodicity (more frequently) than SSB, the system ensures that time-critical synchronization functions maintain low latency while the less time-critical SSB transmissions are reduced in frequency to lower power consumption
Solution Approach 2:
The patent segments the synchronization signaling function into two distinct components: PSS and SSB, each with different periodicity requirements. This segmentation allows the system to optimize each component independently - PSS for low-latency synchronization and SSB for comprehensive system information - thereby resolving the contradiction between reduced power consumption and latency
Data Source
AI summary
A method of wireless communication performed by a first wireless communication device includes: receiving, from a second communication device, a sequence of primary synchronization signals (PSSs) at a first periodicity; receiving, from the second communication device, a sequence of indications at the first periodicity, each indication of the sequence of indications indicating presence of an SSB of the sequence of SSBs during a period of the first periodicity; and monitoring, based on a first indication of the sequence of indications, for a first synchronization signal block (SSB) of a sequence of SSBs, wherein the sequence of SSBs is associated with a first set of frequencies and a second periodicity different from the first periodicity.