SRS Resource Set Configuration for SBFD Uplink Overlap
Find Innovative SolutionsGenerate Solutions
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 configuration based on uplink bandwidth parts (UL BWP).
Innovation Solution
Configure SRS resource sets with distinct time domain resources, including SBFD and non-SBFD type units, and utilize uplink scheduling grants with SRS resource and set indicators to ensure proper SRS transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SRS is configured based on uplink bandwidth part (UL BWP), then SRS can be transmitted on uplink subband, but SRS transmission becomes unclear and abnormal when frequency resources overlap with downlink subband or guard band in SBFD slots
Solution Approach 1:
The patent segments SRS resource sets into two distinct types: first SRS resource sets associated with SBFD time units and second SRS resource sets associated with non-SBFD time units. This segmentation allows the system to handle different time domain configurations separately, resolving the conflict between UL BWP-based SRS configuration and SBFD downlink subband overlaps.
Solution Approach 2:
The patent introduces dynamic configuration mechanisms where the network device can flexibly configure which SRS resource sets to use based on the actual time unit type (SBFD or non-SBFD). This dynamic adaptation allows the system to maintain SRS transmission reliability while accommodating the versatility of different time domain configurations including SBFD slots, symbols, and mini-slots.
2Reliability
If multiple SRS resource sets are configured for different time unit types, then SRS transmission performance is improved, but configuration complexity and system processing complexity increase
Solution Approach 1:
The patent makes the SRS resource set configuration universal by allowing a single configuration framework to handle multiple time unit types (SBFD slots, SBFD symbols, non-SBFD slots, non-SBFD symbols, and mini-slots). The network device uses a unified approach to configure both first and second SRS resource sets, reducing the need for separate complex configuration mechanisms for each time unit type.
Solution Approach 2:
The patent changes the configuration parameter structure by introducing time unit type as a key distinguishing parameter between first and second SRS resource sets. This parameter-based differentiation allows the system to manage multiple resource sets in an organized manner, improving SRS transmission performance while keeping configuration complexity manageable through standardized parameter usage.
Data Source
AI summary
A method applied to a network device 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.