Discovery Reference Signal Transmission Window Duration Control
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Solution Overview
Problem
Current wireless communication technologies face challenges in efficiently determining the transmission duration of discovery reference signals (DRS) on unlicensed bands, particularly in New Radio (NR) operations, where subcarrier spacing affects the duration and flexibility of synchronization signal blocks, leading to limited resource utilization and transmission efficiency.
Innovation Solution
The proposed solution involves determining the transmission duration of DRS based on the target number of candidate positions for synchronization signal blocks and subcarrier spacing, allowing for flexible arrangement and transmission of synchronization signal blocks, and embedding indication information related to time offsets to enable frame synchronization, while also transmitting multiple synchronization signal blocks through multiple transmit beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission duration of DRS is extended to accommodate more synchronization signal blocks, then the resource utilization and transmission efficiency are improved, but the complexity of determining the transmission window duration increases due to the relationship between subcarrier spacing and candidate positions
Solution Approach 1:
The patent applies parameter changes by establishing a direct relationship between subcarrier spacing values and transmission window durations. Different subcarrier spacing configurations (e.g., 15 kHz, 30 kHz, 60 kHz) are mapped to specific transmission window durations, allowing the system to adapt the transmission parameters based on the selected subcarrier spacing without requiring complex real-time calculations
Solution Approach 2:
The patent implements preliminary action by pre-defining the transmission window duration based on the target number of candidate positions and subcarrier spacing before actual DRS transmission. This pre-determination approach allows the system to prepare the transmission parameters in advance, avoiding complex computations during the transmission phase and simplifying the real-time operation
2Reliability
If multiple synchronization signal blocks are transmitted through multiple transmit beams, then the coverage and reliability are improved, but the time offset determination and frame synchronization complexity increase
Solution Approach 1:
The patent introduces an intermediary approach by embedding indication information related to time offsets within the synchronization signal blocks. This indication information acts as a mediator that carries timing relationship data, allowing receiving devices to determine frame synchronization without requiring complex cross-correlation analysis of multiple beams, thus simplifying the synchronization process while maintaining reliability
Solution Approach 2:
The patent applies segmentation by separating the time offset information from the main synchronization signal content and embedding it as distinct indication information within each synchronization signal block. This segmentation allows receiving devices to extract timing information independently from each beam's synchronization block, simplifying the overall frame synchronization process despite multiple transmit beams
Data Source
AI summary
Disclosed are an electronic apparatus, a radio communication method and a computer-readable medium. The electronic apparatus for radio communication according to one embodiment comprises a processing circuit. The processing circuit is configured to: determine a time length of a sending window of a discovery reference signal based on a target number of candidate positions of a synchronous signal block of the discovery reference signal and a subcarrier spacing; and control the sending of the discovery reference signal based on the determined time length.