Preamble Power Control Using CSI-RS and SS/PBCH Blocks
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Solution Overview
Problem
Current multicarrier communication systems face challenges in efficiently managing signal timing and resource allocation across multiple carriers, particularly in scenarios involving carrier aggregation and dual connectivity, which can lead to increased complexity and reduced performance.
Innovation Solution
The implementation of advanced radio resource management techniques, including dynamic modulation and coding schemes, carrier aggregation, and tight interworking between 5G and LTE networks, enables efficient operation of multicarrier communications by optimizing signal timing and resource allocation across multiple carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation and dual connectivity are implemented to increase network capacity and data rates, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent segments the uplink transmission timing management by introducing separate timing indicators for different carriers. The first uplink timing indicator applies to first carriers while the second uplink timing indicator applies to second carriers, allowing independent timing control for each carrier group. This segmentation resolves the complexity of managing unified timing across heterogeneous carriers with different numerologies.
Solution Approach 2:
The patent introduces a new dimension in timing management by adding carrier-specific timing indicators alongside the existing frame structure. Instead of managing timing in a single unified manner, the system now operates with multi-dimensional timing control where each carrier can have its own timing adjustments, enabling precise control over uplink transmissions across carriers with different subcarrier spacings.
2Productivity
If dynamic modulation and coding schemes are used to optimize resource allocation, then productivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements dynamic timing adjustment mechanisms that adapt to different modulation and coding schemes. The uplink timing indicators can be dynamically modified based on the selected numerology and channel conditions, allowing the system to optimize resource allocation while maintaining precise timing alignment. This dynamic approach enables flexible adaptation without requiring fixed, overly precise timing configurations.
3Adaptability or versatility
If tight interworking between 5G and LTE networks is implemented to support seamless mobility, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal timing management framework that works across both 5G NR and LTE networks. By defining uplink timing indicators that can apply to carriers with different numerologies and network types, the system achieves multi-functionality where the same timing management mechanisms serve both 5G and LTE operations, reducing the need for separate complexity-managed subsystems.
Data Source
AI summary
A wireless device receives a synchronization signal and physical broadcast channel (SS/PBCH) block. A control order for transmission of a preamble is received. A transmission power is determined for the preamble. The transmission power is based on: a received power value of a channel state information reference signal (CSI-RS) and a power offset value, in response to the wireless device configured with the CSI-RS; and a received power value of the SS/PBCH block and not based on the power offset value, in response to the wireless device not configured with CSI-RS. The preamble is transmitted based on the transmission power.