Aperiodic SRS Trigger Signaling for 5G Beam Management
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Solution Overview
Problem
In 5G communication systems, there is a challenge in implementing compatibility between SRS transmission for uplink beam management and SRS transmission for uplink scheduling information acquisition.
Innovation Solution
A wireless communication method and device that allows a terminal device to determine the type of SRS based on trigger signaling from a network device, selecting appropriate resources and transmission schemes for different SRS types, enabling multiple SRS types to be transmitted with varying beam, antenna port, and transmission time configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single SRS transmission scheme is used, then device complexity is reduced, but adaptability to different SRS types deteriorates
Solution Approach 1:
The patent implements dynamic SRS transmission by allowing the terminal to select different transmission schemes (single beam or multiple beams) based on the SRS type indicated in the trigger signaling. The transmission parameters including beam quantity, antenna ports, and resource allocation are dynamically adjusted according to the aperiodic SRS type, enabling the system to adapt to different scenarios without requiring multiple fixed transmission schemes.
2Productivity
If multiple SRS types are supported with different configurations, then communication efficiency is improved, but trigger signaling complexity increases
Solution Approach 1:
The patent employs a universal trigger signaling mechanism that can indicate different aperiodic SRS types using the same DCI format. The trigger signaling contains an SRS type indication field that enables a single signaling structure to serve multiple functions: triggering both beam management SRS and scheduling information acquisition SRS. This multi-functional approach allows the system to support multiple SRS types without requiring separate trigger signaling formats for each type.
3Adaptability or versatility
If SRS transmission is triggered dynamically, then communication flexibility is improved, but measurement and control difficulty increases
Solution Approach 1:
The patent implements feedback mechanisms where the network device sends trigger signaling containing SRS type indications to the terminal. The terminal detects the SRS type from the trigger signaling and accordingly selects the appropriate transmission scheme. This feedback loop enables the network to dynamically control SRS transmission parameters based on current communication conditions, improving flexibility while maintaining manageable control through standardized detection rules.
Data Source
AI summary
Provided in embodiments of the present application are a wireless communication method and apparatus, capable of transmitting multiple SRS types. The method comprises: a terminal apparatus receiving trigger signaling sent by a network apparatus for triggering an aperiodic sounding reference signal (SRS); the terminal apparatus determining, according to the trigger signaling, an SRS type of the aperiodic SRS; the terminal apparatus determining, according to the determined SRS type, a resource and/or transmission mode for sending the aperiodic SRS; and the terminal apparatus sending to the network apparatus, on the basis of the determined resource and/or determined transmission mode, the aperiodic SRS.