Adaptive SSB Pattern Switching for Network Energy Savings
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Solution Overview
Problem
Frequent transmission of synchronization signal blocks (SSBs) in wireless communications systems leads to undesirable energy consumption at network entities, particularly in heavily loaded networks, while existing approaches to reduce SSB transmission frequency do not adequately address energy savings for all network states.
Innovation Solution
A network entity adjusts its transmission pattern based on the connection status of wireless devices, transitioning from a regular PSS burst with a high periodicity to a reduced periodicity SSB burst when devices change from an idle to a connected state, allowing for intermediate patterns with varying SSB frequencies to balance energy savings and connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SSB transmission frequency is increased to maintain connectivity, then communication quality and reliability are improved, but network energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the SSB transmission pattern adaptive and configurable based on network conditions. The system transitions from a static transmission schedule to a dynamic one where the network entity can switch between different transmission patterns (first and second patterns) depending on the number of connected wireless devices, thereby optimizing energy consumption while maintaining connectivity requirements.
Solution Approach 2:
The patent changes the transmission parameters (periodicity, burst configuration) of SSB signals based on network load conditions. By configuring different transmission patterns with varying parameters such as transmission periodicity and burst structure, the system achieves energy savings during low-activity periods while maintaining reliable connectivity when needed.
2Use of energy by moving object
If SSB transmission frequency is reduced to save network energy, then energy consumption decreases, but connectivity and communication quality deteriorate
Solution Approach 1:
The system dynamically adjusts transmission frequency based on the number of connected wireless devices. When fewer devices are connected, the network entity uses a first transmission pattern with lower frequency to save energy. When more devices are connected, it switches to a second transmission pattern with higher frequency to maintain connectivity, thus resolving the contradiction between energy savings and connectivity.
Solution Approach 2:
The network entity monitors the number of connected wireless devices and proactively switches transmission patterns before connectivity issues arise. By detecting the number of active devices and preparing appropriate transmission patterns in advance, the system ensures continuous connectivity while minimizing energy consumption during low-load periods.
3Device complexity
If fixed transmission pattern is used for SSB, then implementation complexity is reduced, but adaptability to network conditions and energy savings are limited
Solution Approach 1:
The patent introduces a configurable transmission pattern mechanism that allows the network entity to adapt to varying network conditions. Instead of using a fixed pattern, the system can be configured with multiple transmission patterns that can be switched based on the number of connected devices, enhancing adaptability while maintaining manageable implementation complexity through standardized configuration options.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A network entity may transmit, based on a connection status of one or more wireless devices and in accordance with a first transmission pattern, a first plurality of primary synchronization signal (PSS) bursts and a first plurality of synchronization signal blocks (SSB) remainder bursts, the first transmission pattern indicating a first PSS burst length, a first PSS burst periodicity, and a first SSB remainder burst periodicity indicating at least a subset of the first plurality of PSS bursts that are associated with the first plurality of SSB remainder bursts. The network entity may transmit, based on a first change of the connection status and in accordance with a second transmission pattern, a second plurality of SSB remainder bursts, the second transmission pattern indicating a second SSB remainder burst periodicity smaller than the first SSB remainder burst periodicity.