Synchronization Signal Block Distribution in Broadband Carriers
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Solution Overview
Problem
In the new radio (NR) communication system, the large bandwidth of broadband component carriers poses challenges for terminal devices with smaller operation bandwidths to receive synchronization signal blocks, as the propagation characteristics of different frequency locations vary significantly, leading to potential gaps in synchronization signal block coverage.
Innovation Solution
A method and device for transmitting multiple synchronization signal blocks within a broadband component carrier by determining target frequency domain locations and transmitting these blocks to terminal devices, ensuring that each block is carried on a specific frequency domain location, allowing terminal devices to determine other block locations based on relative frequency relationships, thereby reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single SS block is transmitted at the central frequency location in a broadband component carrier, then the LTE system maintains compatibility and simple structure, but terminal devices with smaller operation bandwidths cannot receive the synchronization signal blocks
Solution Approach 1:
The patent divides the single SS block into multiple SS blocks transmitted at different frequency locations within the broadband component carrier. This segmentation allows terminal devices with different operation bandwidths to receive at least one SS block within their respective bandwidth ranges, solving the compatibility issue without requiring a completely new transmission structure.
Solution Approach 2:
The patent extends the frequency dimension by transmitting SS blocks at multiple frequency locations rather than a single central location. This dimensional expansion in the frequency domain ensures that SS blocks are distributed across the broadband component carrier, making them accessible to terminal devices with various operation bandwidths.
2Adaptability or versatility
If multiple SS blocks are transmitted at different frequency locations within a broadband component carrier, then terminal devices with smaller operation bandwidths can receive synchronization signals, but the signaling overhead increases
Solution Approach 1:
The patent applies local quality by transmitting SS blocks at specific frequency locations tailored to different terminal device requirements. Each SS block is placed at a frequency location that is relevant to terminal devices with specific operation bandwidths, ensuring efficient coverage while avoiding unnecessary transmissions.
Solution Approach 2:
The patent uses copying by transmitting multiple copies of the SS block at different frequency locations. Each copy contains the necessary synchronization information, and terminal devices can acquire synchronization from any copy within their operation bandwidth, reducing the need for extensive signaling about which specific block to use.
3Device complexity
If SS blocks are transmitted only at the central frequency point, then the transmission structure is simple, but the propagation characteristics of different frequency locations cannot be accommodated
Solution Approach 1:
The patent applies local quality by adapting the transmission to local propagation characteristics at different frequency locations. Each SS block is transmitted at a frequency location with specific propagation characteristics, ensuring that terminal devices experience optimal reception conditions for their operation bandwidth.
Solution Approach 2:
The patent extends the frequency dimension to accommodate different propagation characteristics. By transmitting SS blocks across multiple frequency locations rather than a single central point, the system captures the diversity of propagation conditions throughout the broadband component carrier, improving reliability for various terminal devices.
Data Source
AI summary
The present application provides a method and apparatus for transmitting synchronization signal blocks, the method comprising: determining M target frequency domain locations for carrying M synchronization signal blocks within a broadband component carrier, where each of the target frequency domain locations is used for carrying one synchronization signal block, and M is a positive integer greater than or equal to 1; transmitting the M synchronization signal blocks to a terminal device on the M target frequency domain locations. The method for transmitting the synchronization signal blocks provided by the present application can implement transmission of multiple synchronization signal blocks within a broadband component carrier, thus meeting the requirements of new radio communication system.