SS/PBCH Burst Timing Pattern for Energy-Efficient Synchronization
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Solution Overview
Problem
Existing 5G/NR communication systems face challenges in optimizing the synchronization signals and physical broadcast channel (SS/PBCH) block burst patterns, particularly in terms of energy efficiency and synchronization accuracy, especially in high-frequency bands.
Innovation Solution
The proposed solution involves defining a time domain pattern for SS/PBCH block bursts, specifying periodicity, number of bursts, and number of blocks within bursts, enabling efficient transmission and reception of SS/PBCH blocks, with options for periodic and aperiodic patterns to enhance energy savings and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SS/PBCH block burst patterns are transmitted continuously to ensure synchronization accuracy, then synchronization accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic SS/PBCH block burst transmissions with configurable periodicities (e.g., every 5ms, 10ms, 20ms, 40ms, 80ms, or 160ms) instead of continuous transmission. The base station transmits bursts at regular intervals, and the UE identifies time domain patterns to determine when bursts occur, thereby reducing energy consumption while maintaining synchronization accuracy through periodic updates.
Solution Approach 2:
The patent introduces dynamic adaptability by allowing the base station to configure different periodicities and burst patterns based on network conditions, UE capabilities, and service requirements. The time domain pattern can be dynamically adjusted to optimize the balance between synchronization accuracy and energy efficiency for different scenarios.
2Reliability
If more SS/PBCH blocks are transmitted in each burst to improve synchronization reliability, then synchronization reliability is improved, but transmission overhead increases
Solution Approach 1:
The patent segments SS/PBCH blocks into multiple bursts transmitted at different time instances within a periodicity. Each burst contains a configured number of SS/PBCH blocks (e.g., 1, 2, 4, or 8 blocks per burst). This segmentation allows the system to distribute transmission overhead across multiple time instances while maintaining reliability through diversity in time and frequency domains.
Solution Approach 2:
The patent enables flexible configuration of multiple parameters including periodicity, number of bursts per periodicity, and number of blocks per burst. These parameters can be adjusted to optimize the balance between reliability and overhead. For example, in high-mobility scenarios, shorter periodicities with more frequent bursts improve reliability, while in low-mobility scenarios, longer periodicities reduce overhead.
3Speed
If SS/PBCH block bursts are transmitted with shorter periodicity to improve synchronization speed, then synchronization speed is improved, but energy efficiency deteriorates
Solution Approach 1:
The patent implements configurable periodicities for SS/PBCH block bursts, allowing the system to select appropriate intervals (5ms, 10ms, 20ms, 40ms, 80ms, or 160ms) based on synchronization requirements. For fast synchronization scenarios, shorter periodicities can be configured, while for energy-efficient operation, longer periodicities are used. The UE identifies time domain patterns to efficiently detect bursts at the configured periodicity.
Data Source
AI summary
Apparatuses and methods for a synchronization signals and physical broadcast channel (SS/PBCH) block burst pattern in a wireless communication system. A method of a user equipment (UE) in a wireless communication system includes identifying a time domain pattern for SS/PBCH block bursts. The time domain pattern indicates a periodicity for the SS/PBCH block bursts, a first number (N) of SS/PBCH block bursts in the periodicity, and a second number (M) of SS/PBCH blocks in a SS/PBCH block burst within the SS/PBCH block bursts. The method further includes determining time domain candidate occasions for the SS/PBCH blocks, based on the time domain pattern and receiving a SS/PBCH block from the SS/PBCH blocks in the time domain candidate occasions.