SRS Resource Set Configuration for SBFD and Non-SBFD Slots
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Solution Overview
Problem
Sounding reference signal (SRS) transmission is unclear and abnormal when it overlaps with downlink subbands or guard bands in subband full duplex (SBFD) slots/symbols due to frequency resource configuration issues.
Innovation Solution
Configure M SRS resource sets with X first SRS resource sets of SBFD type time units and Y second SRS resource sets of non-SBFD type time units, allowing the terminal device to transmit SRS accordingly, and the network device to receive based on this configuration, simplifying resource configuration and reducing processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If SRS is configured on uplink bandwidth part with downlink subband or guard band, then frequency resources are utilized, but SRS transmission becomes unclear and abnormal
Solution Approach 1:
The patent segments the SRS configuration into two distinct types: first SRS resource sets configured in SBFD slots/symbols with frequency resources, and second SRS resource sets configured in non-SBFD slots/symbols without overlapping downlink subbands or guard bands. This segmentation resolves the contradiction by allowing frequency resource utilization in SBFD mode while ensuring transmission clarity in non-SBFD mode, eliminating the ambiguity present in unified SRS configuration.
2Device complexity
If unified SRS resource configuration is used, then configuration is simple, but processing complexity increases when dealing with SBFD and non-SBFD time units
Solution Approach 1:
The patent divides the SRS resource configuration into two distinct sets with different time domain characteristics. The first set is associated with SBFD time units while the second set is associated with non-SBFD time units. This segmentation simplifies processing by allowing the terminal device to selectively apply configuration rules based on the time unit type, avoiding the complexity of handling unified configuration across different SBFD and non-SBFD scenarios.
Solution Approach 2:
The patent introduces dynamic configuration where the network device can flexibly configure either first SRS resource sets, second SRS resource sets, or both combinations based on the specific time unit requirements. This dynamic approach allows the system to adapt to different operational modes (SBFD or non-SBFD) without requiring complex processing for unified configuration, thereby reducing overall processing complexity while maintaining operational flexibility.
Data Source
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AI summary
Embodiments of this application provide a communication method and a communication apparatus. The method is applied to a network device, and the method includes: sending configuration information to a terminal device, where the configuration information indicates M sounding reference signal SRS resource sets, the M SRS resource sets include X first SRS resource sets and Y second SRS resource sets, the X first SRS resource sets include at least one first SRS resource, the Y second SRS resource sets include at least one second SRS resource, a time domain resource corresponding to the at least one first SRS resource is a subband full duplex SBFD type time unit, and a time domain resource corresponding to the at least one second SRS resource is a non-SBFD type time unit; and receiving an SRS from the terminal device based on the configuration information. According to the solutions of this application, SRS transmission performance can be improved.