Base Station Subcarrier Spacing Signal Block Arrangement
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Solution Overview
Problem
In 5G NR radio communication systems, the transmission of synchronization signals and system information in SS blocks can inhibit opportunities for transmitting DL or UL control signals, leading to inefficient resource arrangement.
Innovation Solution
A base station apparatus that arranges periodic blocks including synchronization signals and system information in radio signals based on subcarrier spacings, allowing for efficient resource allocation and minimizing overlap with control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SS blocks are transmitted repeatedly to ensure reliable initial access, then connection establishment reliability is improved, but opportunities to transmit DL or UL control signals are reduced
Solution Approach 1:
The patent segments the radio frame into different parts: SS blocks for initial access and separate control signal transmission opportunities. By dividing the frame structure, the system can transmit SS blocks repeatedly for reliability while still providing dedicated time slots for control signals, thus resolving the contradiction between reliability and productivity.
Solution Approach 2:
The patent performs preliminary actions by transmitting SS blocks and system information in specific time slots before control signal transmission. This preliminary arrangement of critical initial access signals allows the system to establish basic connectivity first, then proceed with control signal transmission in subsequent slots, maintaining both reliability and productivity.
2Adaptability or versatility
If different SCSs are applied to radio frames in parallel to support various frequency bands, then system adaptability is improved, but resource arrangement efficiency deteriorates
Solution Approach 1:
The patent applies local quality by configuring different SCS values for different radio frames or time slots within the same system. Each radio frame can have its SCS optimized for specific frequency band requirements, allowing the system to maintain adaptability across multiple frequency bands while improving resource arrangement efficiency through localized optimization rather than uniform configuration.
Solution Approach 2:
The patent introduces dynamic configuration of SCS values based on current system conditions and frequency band requirements. The base station can dynamically adjust which SCS is applied to which radio frame, enabling flexible adaptation to different frequency bands while optimizing resource arrangement efficiency through dynamic rather than static configuration.
Data Source
AI summary
A user apparatus that uses a plurality of subcarrier spacings is disclosed. The user apparatus includes a receiver that receives a synchronization signal and system information. The user apparatus further includes a processor that determines, on a basis of the subcarrier spacings, positions of symbols to which periodic blocks including the synchronization signal and the system information are mapped. In other aspects, a base station apparatus and a communication method are also disclosed.