SRS Resource Configuration for Uplink Data Rate Matching
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving uplink data when a sounding reference signal (SRS) is configured within a time interval where the data is scheduled, particularly in next-generation wireless communication systems requiring enhanced mobile broadband, massive machine-type communications, and ultra-reliable low-latency communications.
Innovation Solution
A method and apparatus for transmitting and receiving signals between a user equipment and a base station, where the user equipment receives SRS configuration information including validity information for the SRS resource, and transmits uplink data based on this information, performing rate matching when the SRS resource is valid and transmitting the SRS via the SRS resource according to the indicated method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SRS is configured within a time interval where uplink data is scheduled, then channel estimation accuracy is improved, but resource conflict and transmission reliability deteriorate
Solution Approach 1:
The time interval is segmented into multiple parts: some resource blocks are allocated for SRS transmission while other resource blocks are allocated for uplink data transmission. This segmentation allows both SRS and uplink data to coexist without conflict, maintaining both channel estimation accuracy and transmission reliability.
Solution Approach 2:
The patent transitions from time-division multiplexing to frequency-division multiplexing by allocating different resource blocks (frequency resources) within the same time interval for SRS and uplink data. This dimensional change resolves the resource conflict while allowing simultaneous transmission.
2Reliability
If rate matching is performed for SRS resource, then transmission reliability is improved, but processing complexity and time consumption increase
Solution Approach 1:
The base station performs rate matching in advance by determining the SRS resource configuration and notifying the terminal of the valid SRS resource positions before uplink data transmission. This preliminary action allows the terminal to directly apply the rate matching without complex real-time processing.
Solution Approach 2:
The base station acts as an intermediary that manages the rate matching process by calculating and signaling the SRS resource configuration to the terminal. This simplifies the terminal's processing burden while ensuring reliable transmission.
3Productivity
If validity information for SRS resource is configured, then resource allocation efficiency is improved, but signaling overhead increases
Solution Approach 1:
Instead of configuring validity information for all SRS resources, the patent applies validity information selectively only to specific SRS resources that are configured within uplink data time intervals. This local quality approach reduces signaling overhead while maintaining resource allocation efficiency where needed.
Data Source
AI summary
Disclosed are a method for transmitting and receiving a signal between a terminal and a base station in a wireless communication system, and an apparatus for supporting the same. In particular, disclosed are: a method for transmitting and receiving a signal, including the uplink data, between a terminal and a base station when a sounding reference signal is configured within a time interval in which uplink data is scheduled; and an apparatus for supporting the same.