SRS Resource Mapping Using Unified Resource Sets for Uplink Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently mapping sounding reference signal (SRS) resources, particularly in configuring user equipment (UE) with appropriate SRS resources and bit sequences for effective uplink transmissions.
Innovation Solution
A method and apparatus for UE to transmit a capability message indicating antenna and port capabilities, receive an SRS configuration with resource mappings, and use control messages to select SRS resources based on bit sequences, allowing for dynamic or static virtual resource sets to optimize SRS transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different numbers of resource sets are used for antenna switching and codebook-based transmissions, then the system can support diverse transmission requirements, but the signaling overhead increases and resource utilization becomes inefficient
Solution Approach 1:
The patent merges antenna switching resource sets and codebook-based transmission resource sets into a unified resource set. The base station configures a single resource set that can serve both transmission types, eliminating the need for separate resource set configurations. This reduces signaling overhead while maintaining the ability to support diverse transmission requirements through a common resource pool.
Solution Approach 2:
The unified resource set is designed to serve multiple functions - it can be used for both antenna switching operations and codebook-based transmissions. The resource set contains resources that are versatile enough to accommodate different transmission types, allowing a single resource set to replace multiple specialized resource sets and reduce overall signaling requirements.
2Adaptability or versatility
If multiple resource sets are configured for SRS transmissions, then the system can provide flexible resource allocation, but the number of configurations increases and resource utilization decreases
Solution Approach 1:
The patent combines multiple separate resource set configurations into a single unified resource set configuration. Instead of managing multiple independent resource sets for different transmission types, the system uses one consolidated resource set that accommodates all SRS transmission needs, thereby reducing configuration complexity while preserving allocation flexibility.
Solution Approach 2:
The unified resource set is designed with universal applicability, allowing the same resource set to be used for various SRS transmission scenarios including antenna switching and codebook-based transmissions. This multi-functional design eliminates the need for multiple specialized configurations, reducing device complexity while maintaining versatile resource allocation capabilities.
3Reliability
If separate resource sets are used for antenna switching and codebook-based transmissions, then resource allocation can be optimized for each transmission type, but the overall resource utilization becomes inefficient
Solution Approach 1:
The patent merges separate resource sets for antenna switching and codebook-based transmissions into a single unified resource set. This consolidation allows for more efficient overall resource utilization by eliminating redundancy and enabling better resource sharing across different transmission types, while still allowing optimized allocation within the unified structure.
Solution Approach 2:
The unified resource set provides universal resources that can be dynamically allocated to different transmission types based on actual needs. This multi-functional approach improves resource utilization efficiency by allowing resources to be shared and reused across antenna switching and codebook-based transmissions, rather than being siloed in separate dedicated resource sets.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A base station may receive a capability message from a user equipment (UE) based on a number of receive antennas exceeding a number of transmit antennas at the UE. The base station may configure the UE with a mapping between sounding reference signal (SRS) resources and bit sequences, or SRS resource indices (SRIs), based on the capability message. The base station may transmit a control message including one or more SRIs indicating respective SRS resources. The UE may use the one or more SRIs included in a control message from the base station to select respective SRS resources from a resource set. Once the UE selects one or more SRS resources, the UE may transmit one or more SRSs in the SRS resources.