SRS Resource Set Configuration for Antenna Switching Delays
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently obtaining downlink channel information, particularly for terminals with fewer transmission antennas than reception antennas, and managing antenna switching operations, especially in multi-panel terminals with panel switching delays.
Innovation Solution
A method and apparatus for transmitting and receiving a sounding reference signal (SRS) that includes transmitting terminal capability information related to antenna switching, receiving configuration information, and transmitting SRS based on this information, which includes details on SRS resource sets and antenna ports for antenna switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If antenna switching operations are implemented to obtain downlink channel information, then channel state information acquisition is improved, but device complexity and management difficulty increase
Solution Approach 1:
The patent segments the SRS resource configuration into multiple resource sets, where each set corresponds to specific antenna ports. This segmentation allows the terminal to systematically manage antenna switching by associating each resource set with specific antenna configurations, thereby reducing the complexity of managing downlink channel information acquisition across multiple antennas.
Solution Approach 2:
The base station performs preliminary configuration of SRS resource sets and antenna port associations before the terminal executes antenna switching operations. By pre-configuring the resource sets with specific antenna port mappings and usage parameters, the system prepares the necessary framework in advance, simplifying the actual antenna switching execution and reducing real-time management complexity.
2Adaptability or versatility
If multiple SRS resource sets are configured for antenna switching, then downlink channel information coverage is improved, but configuration complexity increases
Solution Approach 1:
The patent designs SRS resource sets with multi-functional capability, where each resource set can serve multiple purposes: supporting different antenna port configurations, accommodating various usage scenarios (codebook-based and non-codebook-based SRS), and enabling flexible adaptation to different terminal capabilities. This universality allows a single resource set structure to handle diverse downlink channel information acquisition needs without proportionally increasing configuration complexity.
Solution Approach 2:
The system enables flexible parameter configuration for SRS resource sets, including adjustable parameters such as usage type (antenna switching, beam management, etc.), antenna port associations, and resource allocation parameters. By allowing dynamic parameter changes based on terminal capability information and network requirements, the system adapts the configuration complexity to the actual needs, providing comprehensive channel information coverage only when necessary.
3Reliability
If panel switching delays are considered in multi-panel terminals, then transmission reliability is improved, but communication efficiency decreases
Solution Approach 1:
The system performs preliminary configuration of SRS resource sets with panel switching delay considerations in mind. By pre-configuring the resource sets to account for panel switching delays and associating them with specific antenna ports and panels, the system prepares the necessary timing and resource allocations in advance, ensuring reliable multi-panel transmission without requiring real-time delay calculations that would reduce communication efficiency.
Data Source
AI summary
Disclosed are a method and device for transmitting and receiving sounding reference signal in a wireless communication system. A method for transmitting a physical uplink shared channel (PUSCH) according to an embodiment of the present disclosure may comprise the steps of: transmitting, to a base station, terminal capability information related to antenna switching; receiving configuration information related to an SRS from the base station; and transmitting the SRS to the base station to the basis of the configuration information. The configuration information may include information about a plurality of SRS resource sets, the usage of which has been set to antenna switching, and antenna port information about the plurality of SRS resource sets.