Dynamic Reference Signal Bundling for Overlapping Wireless Transmissions
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Solution Overview
Problem
In wireless communications, existing systems face challenges in efficiently managing shared channel reference signals and concurrent transmissions, particularly in scenarios where transmissions overlap in time and frequency, leading to complexities in channel estimation and resource allocation.
Innovation Solution
The proposed solution involves a user equipment (UE) that identifies scheduled transmissions and determines a reference signal bundling pattern based on overlapping transmissions, allowing it to modify or maintain the bundling configuration to optimize channel estimation and resource usage, either by processing each transmission individually or bundling reference signals across subsets of transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signals are bundled across multiple transmissions, then channel estimation performance is improved, but device complexity increases due to need to manage overlapping transmissions and modify bundling patterns
Solution Approach 1:
The patent implements dynamic reference signal bundling where the UE determines a second bundling pattern based on identifying overlapping transmissions. The bundling configuration is modified in real-time according to the detected transmission overlaps, allowing the system to adapt the bundling behavior dynamically rather than using a fixed pattern, thus resolving the contradiction between maintaining estimation accuracy and managing device complexity.
Solution Approach 2:
The system changes the bundling pattern parameters when overlapping transmissions are detected. The UE modifies the reference signal bundling configuration from a first pattern to a second pattern based on the overlap detection, effectively changing operational parameters to balance performance and complexity requirements under different transmission conditions.
2Productivity
If multiple concurrent transmissions are supported, then resource allocation efficiency is improved, but signaling overhead increases due to need to signal bundling configurations for each transmission
Solution Approach 1:
The patent merges the handling of multiple transmissions by allowing the UE to determine a unified second bundling pattern that applies to overlapping transmissions. Instead of managing separate bundling configurations for each transmission, the system combines the management into a single determined pattern, reducing signaling overhead while maintaining support for multiple concurrent transmissions.
3Device complexity
If reference signals are processed individually for each transmission, then device complexity is reduced, but channel estimation performance deteriorates due to inability to leverage bundled reference signals
Solution Approach 1:
The system dynamically selects between individual processing and bundled processing based on transmission overlap detection. When no overlaps are detected, simpler individual processing can be used; when overlaps are detected, the UE determines an appropriate bundling pattern to maintain estimation performance, thus resolving the contradiction adaptively rather than forcing a fixed approach.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The described techniques provide for a user equipment (UE) to identify a first set of scheduled transmissions to be received using a first set of time-frequency resources, where reference signals of the first set of transmissions may be bundled according to a first reference signal bundling pattern. The UE may identify a second scheduled transmission to be received using a second set of time-frequency resources that overlaps with the first set of resources. The UE may determine a second reference signal bundling pattern for bundling the reference signals received in the first set of transmissions. For example, the UE may modify the first reference signal bundling pattern to determine the second reference signal bundling pattern. The UE may receive the second scheduled transmission and the first set of scheduled transmissions according to the second reference signal bundling pattern.