Synchronization Signal Block Detection Using Bitmap Indication
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Solution Overview
Problem
In next-generation wireless communication systems, there is a need to ascertain the number of actual synchronization signal blocks transmitted by a node and correlate beams with received synchronization signal blocks, as existing methods do not effectively handle the complexities of multi-beam and multi-frequency scenarios in 5G NR systems.
Innovation Solution
A method and apparatus that provide beam utilization information to user equipment (UE) to identify the actual synchronization signal blocks transmitted by a node, allowing the UE to decode and process synchronization signal block bursts efficiently, including techniques such as bitmap conventions, index conventions, and inter-node signaling to determine the actual transmission patterns of synchronization signal blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple synchronization signal blocks are transmitted to support multi-beam and multi-frequency scenarios, then the system's adaptability and coverage are improved, but the complexity of identifying and processing actual transmitted blocks increases
Solution Approach 1:
The patent applies preliminary action by providing beam utilization information to the UE before the UE attempts to identify and process synchronization signal blocks. This advance information indicates which SS blocks are actually transmitted, allowing the UE to pre-configure its detection strategy and avoid unnecessary processing of non-transmitted blocks, thereby reducing identification complexity while maintaining multi-beam support
Solution Approach 2:
The patent introduces beam utilization information as an intermediary element that mediates between the base station's transmission decisions and the UE's reception process. This intermediary provides a mapping or indication layer that connects the actual transmitted SS blocks to the UE's detection capabilities, simplifying the identification process in multi-beam scenarios
2Productivity
If beam utilization information is provided to indicate actual transmitted synchronization signal blocks, then the user equipment's processing efficiency is improved, but the signaling overhead and system complexity increase
Solution Approach 1:
The patent applies parameter changes by encoding beam utilization information in compact forms such as bitmaps or index values. These parameter representations efficiently convey which SS blocks are transmitted using minimal signaling resources. For example, a bitmap of L bits can indicate the transmission status of L potential SS blocks, achieving high processing efficiency with low overhead
3Reliability
If the number of synchronization signal blocks is increased to cover more beams and frequencies, then the system's coverage and reliability are improved, but the time and computational resources required for processing increase
Solution Approach 1:
The patent applies preliminary action by providing beam utilization information that enables the UE to immediately identify which SS blocks are actually transmitted. This allows the UE to skip detection of non-transmitted blocks and directly process relevant blocks, significantly reducing detection time and computational resources while maintaining reliable cell selection and handover functionality
Data Source
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AI summary
A user equipment comprises receiving circuitry configured to receive bit map information indicating time domain positions, within a measurement window, of synchronization signal block(s) (SSB(s)) used for an intra and/or an inter-frequency measurement, the SSB(s) comprising at least a primary synchronization signal (PPS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH), wherein the bitmap information comprises a bit string, and different lengths of the bit string are defined for different frequency bands.