Uplink Frequency Resource Signaling for SBFD TDD Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In time division duplexing (TDD) systems, there is a lack of a clear method for a base station to indicate frequency domain resources for uplink signal transmission, leading to limited uplink coverage.
Innovation Solution
A communication method and apparatus that determines frequency domain resources by using a single piece of information to define frequency unit sets in both subband full-duplex (SBFD) and non-SBFD time units, allowing flexibility in indicating frequency unit sets without increasing interactions with the network side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If subband full-duplex (SBFD) is used to enhance uplink coverage by dividing frequency bands, then uplink resource availability is improved, but the complexity of indicating frequency domain resources to terminal devices increases
Solution Approach 1:
The patent applies universality by designing a single piece of indication information that serves multiple functions: it indicates frequency unit sets for both SBFD time units and non-SBFD time units. This multi-functional indication mechanism eliminates the need for separate indication schemes for different time unit types, thereby reducing indication complexity while maintaining support for enhanced uplink resources in SBFD mode
Solution Approach 2:
The patent uses parameter changes by introducing a frequency spacing parameter that defines the relationship between frequency units in different time unit types. By changing and reusing this parameter across different time unit configurations, the system can adaptively indicate frequency resources for both SBFD and non-SBFD scenarios without increasing overall indication complexity
2Measurement precision
If separate indication methods are used for frequency unit sets in SBFD and non-SBFD time units, then resource allocation precision is improved, but the quantity of information interactions between network side and terminal devices increases
Solution Approach 1:
The patent applies merging by combining the indication of frequency unit sets for SBFD time units and non-SBFD time units into a single piece of indication information. This unified indication approach maintains precise resource allocation for both time unit types while reducing the total quantity of information that needs to be transmitted between the network side and terminal devices
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
A communication method and apparatus are provided. In the communication method, a second communication apparatus may indicate a first frequency unit set and a first frequency spacing by using first information. The first communication apparatus may determine a second frequency unit set based on the first frequency unit set and the first frequency spacing. The first frequency unit set and the second frequency unit set are respectively frequency units used to transmit a first type of signal in different types of time units.