SRS Port Mapping with Time-Domain OFDM Symbol Patterns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently mapping sounding reference signal (SRS) ports to a quantity of symbols, which affects the performance of uplink transmissions in LTE and NR networks.
Innovation Solution
Implementing a time domain pattern configuration that indicates the quantity of orthogonal frequency division multiplexing (OFDM) symbols for mapping 8 SRS ports in an SRS resource, allowing for precise mapping and transmission/reception of SRS based on this configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SRS ports are mapped to a fixed number of symbols, then the mapping process is simple, but the uplink transmission performance cannot be optimized for different scenarios
Solution Approach 1:
The patent implements dynamic mapping of SRS ports to OFDM symbols by introducing a time domain pattern configuration that can be adjusted based on different transmission scenarios. The network node configures multiple time domain patterns with different symbol quantities, and the UE selects appropriate patterns based on current channel conditions and transmission requirements, transforming the static mapping into a dynamic adaptive process that optimizes uplink performance without requiring complex reconfiguration.
Solution Approach 2:
The patent changes the parameter of symbol quantity for SRS port mapping by introducing configurable time domain patterns. Instead of using a fixed number of symbols, the system allows the symbol quantity to be varied according to different time domain patterns, enabling optimization of mapping efficiency for different scenarios while maintaining a manageable configuration structure through pattern-based parameterization.
2Measurement precision
If the quantity of symbols for SRS port mapping is increased, then the mapping precision is improved, but the time resource consumption increases
Solution Approach 1:
The patent applies dynamic adaptation by allowing the UE to select different time domain patterns based on current transmission needs. When high mapping precision is required, patterns with more symbols can be selected; when time efficiency is prioritized, patterns with fewer symbols are chosen. This dynamic selection mechanism balances mapping precision against time resource consumption without requiring a fixed conservative configuration.
Solution Approach 2:
The patent implements partial action by configuring multiple time domain patterns with different symbol quantities, allowing the system to use only the necessary number of symbols for each specific scenario. Instead of always using the maximum number of symbols for all cases, the system applies partial symbol allocation matched to the actual requirements, reducing unnecessary time resource consumption while maintaining sufficient mapping precision when needed.
3Adaptability or versatility
If multiple time domain patterns are configured for different scenarios, then the adaptability is improved, but the configuration complexity increases
Solution Approach 1:
The patent implements universality by designing a unified time domain pattern configuration framework that handles multiple scenarios through a common structure. The network node configures a set of time domain patterns that can be universally applied across different transmission scenarios, and the UE uses a standardized selection mechanism to choose appropriate patterns. This universal framework provides scenario adaptability while avoiding the need for separate specialized configurations for each case, thereby controlling configuration complexity.
4Productivity
If the SRS resource is efficiently utilized, then the spectral efficiency is improved, but the device complexity for resource management increases
Solution Approach 1:
The patent applies self-service by enabling the UE to autonomously select appropriate time domain patterns based on pre-configured options and current transmission conditions. The UE independently manages the selection and application of SRS port mapping configurations without requiring continuous network reconfiguration or complex centralized resource management. This self-service mechanism improves spectral efficiency through adaptive resource utilization while keeping device complexity manageable by distributing the management intelligence to the UE.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, a time domain pattern configuration that indicates a quantity of orthogonal frequency division multiplexing (OFDM) symbols for mapping 8 sounding reference signal (SRS) ports in an SRS resource. The UE may transmit, to the network node, an SRS based at least in part on the time domain pattern configuration, wherein the SRS is transmitted based at least in part on the 8 SRS ports in the SRS resource being mapped to the quantity of OFDM symbols according to the time domain pattern configuration. Numerous other aspects are described.