Synchronization Block Indication for 5G Beam Management
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Solution Overview
Problem
In 5G wireless communication systems operating in high frequency bands, conventional omnidirectional transmission is inefficient due to poor radio wave propagation, and existing methods for synchronization block indication result in significant bit overhead when multiple synchronization blocks are used.
Innovation Solution
A method and device that determine a to-be-sent beam and generate indication information including the number of groups of beams and identifiers to indicate which beams have synchronization signals, reducing the need for explicit identification of sent beams and minimizing bit overhead by combining group and intra-group indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a bitmap is used to indicate beams for which SSB is sent and beams for which SSB is not sent, then the indication is comprehensive, but the bit overhead is significant
Solution Approach 1:
The patent segments the beam indication into two parts: (1) indication of groups of beams where SSB is sent, and (2) indication of specific beams within each group where SSB is sent. This segmentation allows the system to avoid using a full bitmap for all beams, instead using compact group identifiers and selective beam indication only where necessary, thereby reducing bit overhead while maintaining complete indication capability.
Solution Approach 2:
The patent introduces a group dimension to organize beams, transforming the flat bitmap structure into a hierarchical structure. Instead of indicating each beam individually in a single dimension (bitmap), the system first indicates groups in one dimension, then indicates specific beams within groups in another dimension, achieving more efficient representation.
2Ease of manufacture
If conventional omnidirectional transmission is used, then the system is simple to implement, but radio wave propagation in high frequency bands is poor
Solution Approach 1:
The patent implements dynamic beam selection and indication mechanisms that adapt to channel conditions. The base station can dynamically determine which beams require SSB transmission based on channel state information, and the indication mechanism dynamically indicates only the necessary beams rather than all possible beams, optimizing both reliability and efficiency for high frequency band propagation.
Data Source
AI summary
A method for indicating a synchronization block includes: determining a beam to be sent; generating indication information, wherein the indication information comprises the number of beam packets, and an identifier for indicating whether each beam, except the beam to be sent, of each beam packet for sending a synchronization signal block (SSB) sends an SSB; and sending, to a user equipment, an SSB and indication information corresponding to the beam to be sent.