Uplink Precoding Across Sub-Bands for Frequency-Selective Coverage
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing frequency selective transmission to enhance coverage and data throughput, particularly in heterogeneous networks with varying cell sizes and traffic demands.
Innovation Solution
Implementing frequency selective transmission techniques that adapt bandwidth parts (BWPs) and utilize multiple precoders to optimize signal processing across different cell types and traffic conditions, enhancing coverage and data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency selective transmission is implemented across the entire bandwidth, then coverage is improved, but network complexity and resource management difficulty increase
Solution Approach 1:
The patent divides the total bandwidth into multiple bandwidth parts (BWPs), each with distinct frequency selective transmission patterns. Different BWPs can have different cyclic shifts and orthogonal cover codes applied, allowing independent optimization of coverage and complexity management for each segment rather than managing the entire bandwidth as a single complex entity.
Solution Approach 2:
The patent applies different frequency selective transmission parameters (cyclic shifts, orthogonal cover codes) to different bandwidth parts based on local network conditions, cell sizes, and traffic demands. This allows each BWP to be optimized for its specific requirements rather than applying a uniform approach across the entire bandwidth.
2Productivity
If multiple precoders are used for frequency selective transmission, then data throughput is improved, but signal processing complexity increases
Solution Approach 1:
The patent associates multiple precoders with different bandwidth parts rather than applying all precoders across the entire bandwidth simultaneously. This segmentation allows the system to achieve high throughput through multiple precoders while reducing overall processing complexity by limiting each precoder's operational scope to specific BWPs.
Solution Approach 2:
The patent enables dynamic selection and application of different precoders across different bandwidth parts based on real-time channel conditions and traffic requirements. This dynamic approach optimizes throughput by applying the most suitable precoder to each BWP while avoiding the constant overhead of processing all precoders across all bandwidths.
3Adaptability or versatility
If bandwidth parts are adapted for different cell types, then network adaptability is improved, but configuration complexity increases
Solution Approach 1:
The patent configures different bandwidth parts with specific parameters (cyclic shifts, orthogonal cover codes, precoder associations) tailored to different cell types (macrocell, picocell, femtocell). This segmentation allows each cell type to have optimized configurations without requiring complex global reconfiguration of the entire network.
Solution Approach 2:
The patent applies local optimization to each bandwidth part based on the specific characteristics of serving cells, allowing macrocells, picocells, and femtocells to have differently configured BWPs that match their coverage areas and traffic patterns, thereby improving adaptability while keeping configuration manageable through localized settings.
Data Source
AI summary
A wireless device determines uplink precoders for a transmission of a transport block. The transmission of the transport block take place via uplink resources comprising sub-bands. The uplink precoders for each respective sub-band of the sub-bands are based on a transmission precoder of one or more sounding reference signal (SRS) resources transmitted via each of the respective sub-bands.