Uplink SRS Resource Set Selection for Low-Latency Wireless Transmission
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Solution Overview
Problem
The increasing demand for faster and more efficient wireless communication systems, particularly in next-generation mobile communication systems, necessitates improved methods for uplink transmission and reception, especially with the use of sounding reference signal resource sets, to accommodate explosive data traffic and support a large number of connected devices with low latency and high energy efficiency.
Innovation Solution
A method for uplink transmission and reception in a wireless communication system involving the configuration and utilization of multiple sounding reference signal (SRS) resource sets, guided by downlink control information (DCI), enabling efficient communication through the indicated SRS resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple SRS resource sets are configured and indicated by DCI, then uplink transmission performance and data transmission rates are improved, but system complexity and configuration overhead increase
Solution Approach 1:
The patent divides the SRS configuration into multiple resource sets (first SRS resource set, second SRS resource set, etc.), each containing multiple SRS resources. This segmentation allows the system to manage complex uplink transmission requirements by organizing resources in manageable groups, enabling flexible indication through DCI while maintaining organizational structure.
Solution Approach 2:
The patent introduces dynamic indication mechanisms where DCI can indicate different combinations of SRS resource sets and SRS resources based on current transmission needs. The system transitions from static configuration to dynamic selection, allowing the base station to adaptively choose which SRS resources to activate for each transmission occasion, optimizing performance for varying conditions.
2Adaptability or versatility
If multiple SRS resource sets are used for uplink transmission, then transmission flexibility and adaptability are improved, but configuration overhead and processing complexity increase
Solution Approach 1:
The patent segments SRS resources into multiple resource sets that can be independently configured and indicated. Each resource set can be associated with different transmission parameters, beam directions, or frequency resources, enabling flexible adaptation to various uplink transmission scenarios while maintaining a structured configuration approach.
Solution Approach 2:
The patent employs preliminary configuration of multiple SRS resource sets and their associated parameters before actual transmission occurs. The base station pre-configures the UE with multiple SRS resource sets, and the UE stores this information for later use. During transmission, the base station simply needs to indicate which pre-configured resources to activate, reducing real-time processing complexity.
3Loss of time
If SRS resources are dynamically indicated via DCI, then latency is reduced and transmission speed is improved, but control information processing complexity increases
Solution Approach 1:
The patent configures multiple SRS resource sets and their associated parameters in advance through higher-layer signaling (RRC configuration). The UE stores this pre-configured information locally. When uplink transmission is needed, the base station only needs to send a compact indication in DCI specifying which pre-configured resources to use, significantly reducing the amount of control information that needs to be processed in real-time.
Solution Approach 2:
The patent extracts the detailed configuration information from the dynamic control signal (DCI) and places it in the pre-configuration phase. The DCI only carries essential indication information (such as resource set indices or resource indicators), while the detailed parameters (frequency, time, beam direction, power settings) are already extracted and stored in the UE from previous configuration messages.
Data Source
AI summary
An uplink transmission and reception method and device in wireless communication system are disclosed. A method by which a terminal performs uplink transmission in a wireless communication system, according to one embodiment of the present disclosure, may comprise the steps of: receiving configuration information related to a plurality of sounding reference signal (SRS) resource sets; receiving downlink control information (DCI), which indicates at least one from among a first SRS resource set, a second SRS resource set, or the first SRS resource set and the second SRS resource set and includes information indicating at least one SRS resource in the indicated at least one SRS resource set; and performing the uplink transmission on the basis of the indicated at least one SRS resource.