SS/PBCH Block Occasion Identification in Unlicensed Spectrum Access
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently identifying and utilizing synchronization signal/physical broadcast channel block occasions, particularly in unlicensed spectra, which affects the transmission and reception of initial access signals and channels.
Innovation Solution
The method involves identifying and utilizing a plurality of synchronization signal/physical broadcast channel block occasions beyond the maximum allowed number, with network units and remote units transmitting and receiving these blocks on a portion of the identified occasions, and employing time-shifted SS/PBCH blocks to optimize channel access and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple synchronization signal/physical broadcast channel blocks are transmitted on different resources, then the coverage and reliability of initial access signals are improved, but the complexity of identifying and managing block occasions increases
Solution Approach 1:
The patent segments the synchronization signal/physical broadcast channel blocks into multiple blocks (SSBs) transmitted on different resources. Each SSB is associated with specific occasion information that can be independently identified and managed, allowing the system to maintain multiple transmission paths while organizing them in a structured manner that reduces identification complexity
Solution Approach 2:
The patent transmits synchronization signal blocks on a portion of the plurality of synchronization signal block occasions rather than all occasions. This partial action approach allows the system to provide sufficient coverage and reliability through selective transmission while reducing the overall complexity of managing all possible transmission occasions
2Adaptability or versatility
If synchronization signal blocks are transmitted in unlicensed spectra, then fair coexistence with other wireless systems is achieved, but interference from other transmissions increases
Solution Approach 1:
The patent employs periodic transmission of synchronization signal blocks in unlicensed spectra with defined periodicity and timing structures. This periodic action allows the system to comply with regulatory requirements for fair spectrum access while creating predictable transmission patterns that help manage interference through regular intervals and structured resource allocation
Solution Approach 2:
The patent performs preliminary channel access procedures and timing synchronization before transmitting synchronization signal blocks in unlicensed spectra. This preliminary action includes listening for existing transmissions and determining appropriate transmission timing, which helps reduce interference with other wireless systems while maintaining compliance with regulatory requirements
3Measurement precision
If the number of synchronization signal block occasions exceeds the maximum allowed number, then the precision of time synchronization is improved, but the difficulty of managing transmission resources increases
Solution Approach 1:
The patent extends the synchronization signal block transmission beyond the maximum allowed number of occasions by utilizing additional time dimensions and periodic structures. This allows the system to achieve higher time synchronization precision through multiple periodic occurrences while managing resource complexity through structured repetition patterns rather than requiring all occasions to be independently managed
Data Source
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AI summary
Apparatuses, methods, and systems are disclosed for identifying synchronization signal/physical broadcast channel block occasions. One method (900) includes identifying (902) a plurality of synchronization signal/physical broadcast channel block occasions configured to enable reception of a plurality of synchronization signal/physical broadcast channel blocks. A first number of synchronization signal/physical broadcast channel block occasions of the plurality of synchronization signal/physical broadcast channel block occasions is greater than a maximum allowed number of synchronization signal/physical broadcast channel blocks of the plurality of synchronization signal/physical broadcast channel blocks. The method (900) includes receiving (904) the plurality of synchronization signal/physical broadcast channel blocks on a portion of the plurality of synchronization signal/physical broadcast channel block occasions.