Transmission Link Configuration Through Reference Signal Mapping
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Solution Overview
Problem
Current NR beam management architectures in 5G wireless networks face challenges in establishing relationships between reference signals across different component carriers (CCs) and bandwidth parts (BWPs), leading to inefficient multi-CC aggregation scheduling and increased scheduling errors due to independent CSI and SRS feedback for each CC/BWP.
Innovation Solution
Establishing relationships between CSI-RS and SSB resources across different CCs/BWPs by adding new reporting parameters to indicate simultaneous reception or transmission capabilities, and grouping SRS resource sets based on network parameters to ensure coherent beam management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If independent CSI and SRS feedback are used for each CC/BWP, then device complexity is reduced and operation is simplified, but scheduling reliability deteriorates due to increased scheduling errors and loss of coordination between carriers
Solution Approach 1:
The patent merges independent feedback operations across multiple CCs/BWPs by establishing QCL relationships between reference signals on different carriers. This allows the device to perform coordinated beam management while maintaining operational simplicity, resolving the contradiction between ease of operation and scheduling reliability.
Solution Approach 2:
The patent creates a universal feedback mechanism that works across multiple CCs and BWPs simultaneously through QCL parameter sharing. The same feedback process serves multiple carriers, reducing operational complexity while improving scheduling reliability through coordinated resource allocation.
2Device complexity
If beam management is performed independently for each CC/BWP, then device complexity is reduced, but productivity decreases due to inefficient multi-CC aggregation scheduling and increased scheduling errors
Solution Approach 1:
The patent segments beam management into hierarchical levels: QCL relationships are established at the reference signal level, while actual beam management operations can be performed independently per CC/BWP. This segmentation maintains low device complexity while improving productivity through coordinated scheduling.
Solution Approach 2:
The patent performs preliminary QCL relationship establishment between reference signals before actual data transmission and scheduling. This preliminary action configures the coordination framework in advance, enabling efficient multi-CC aggregation scheduling without increasing real-time operational complexity.
3Reliability
If QCL relationships are established between reference signals on different CCs/BWPs, then scheduling reliability and coordination are improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent uses reference signal copying concepts where QCL parameters from one reference signal are applied to another reference signal on a different CC/BWP. This copying mechanism establishes coordinated relationships without requiring separate independent configurations, thus improving reliability while limiting complexity growth.
4Stability of the object's composition
If reference signals are configured with identical spatial parameters across CCs/BWPs, then beam consistency and coordination are improved, but adaptability to different propagation conditions deteriorates
Solution Approach 1:
The patent applies local quality by allowing different reference signals to have different spatial parameters adapted to their specific CC/BWP propagation conditions, while QCL relationships ensure overall beam consistency. Each reference signal can be locally optimized while maintaining global coordination.
Solution Approach 2:
The patent enables dynamic spatial parameter configuration where QCL relationships can be established between reference signals with different spatial characteristics. This allows the system to adapt to varying propagation conditions across different carriers while maintaining beam management consistency through the QCL framework.
Data Source
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AI summary
Methods, systems and devices for transmission link configuration using reference signal mapping in next generation cellular networks are described. An example method for wireless communication, based on the disclosed technology, includes transmitting data over at least one transmission link that is configured based on a mapping between two reference signals, each of which is configured with different subsets of one or more network parameters. Another example method includes dividing a plurality of SRS (sounding reference signal) resource sets into a plurality of groups based on network parameters of SRS resources or SRS resource sets, and transmitting, within one of the plurality of groups, only one SRS resource in each of multiple SRS resource sets at an identical time, where the SRS resources in different SRS resource sets can be transmitted simultaneously. The methods described may include beam management implementations for wireless communications.