Aperiodic SRS Bandwidth Aggregation Across Linked Component Carriers
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately and efficiently transmitting and receiving signals, particularly in scenarios requiring SRS bandwidth aggregation across multiple component carriers.
Innovation Solution
A method and apparatus for transmitting and receiving sounding reference signals (SRS) through SRS bandwidth aggregation across multiple component carriers, maintaining phase continuity and using the same comb type, symbol length, and symbol position, with power parameters configured uniformly across linked SRS resource sets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If aperiodic SRS transmission is triggered on a first SRS resource set configured in a first CC, then SRS transmission can be performed on that specific carrier, but SRS transmission on other component carriers cannot be performed simultaneously
Solution Approach 1:
The patent combines multiple SRS resource sets configured on different component carriers into a single linked group. When DCI triggers aperiodic SRS transmission on one resource set, the transmission is automatically performed on all linked resource sets across multiple carriers, enabling simultaneous multi-carrier SRS transmission and improving overall transmission efficiency
Solution Approach 2:
The patent creates a universal triggering mechanism where a single DCI trigger command can activate SRS transmission across multiple component carriers simultaneously. The linked SRS resource sets share common transmission parameters and are activated by a single trigger, providing multi-functional capability for efficient multi-carrier operation
2Reliability
If different power parameters are configured for SRS resource sets on different CCs, then each carrier can be optimized independently, but phase continuity cannot be maintained across carriers
Solution Approach 1:
The patent applies local quality by allowing different power parameters to be configured for each SRS resource set on different component carriers, enabling independent optimization of each carrier's transmission characteristics while maintaining overall phase continuity through the linking mechanism
Solution Approach 2:
The patent enables phase continuity maintenance through parameter coordination across linked resource sets. By configuring power parameters and other transmission parameters consistently across linked SRS resource sets, the system maintains phase continuity while still allowing carrier-specific optimizations where applicable
Data Source
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AI summary
According to at least one of the embodiments disclosed in the present specification, a method of transmitting a sounding reference signal (SRS) by a user equipment (UE) in a wireless communication system includes: receiving configuration information for linking a plurality of SRS resource sets on a plurality of component carriers (CCs) with each other for SRS bandwidth aggregation; receiving downlink control information (DCI) triggering aperiodic SRS transmission on a first SRS resource set; and performing the aperiodic SRS transmission. Based on that the first SRS resource set on which the aperiodic SRS transmission is triggered is one of the plurality of SRS resource sets linked through the configuration information, the aperiodic SRS transmission may be performed on all of the plurality of CCs in which the plurality of SRS resource sets are configured.