Uplink Slot Selection for SBFD Interference Management
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Solution Overview
Problem
Existing technologies face challenges in determining the appropriate time slots for uplink signal transmission in subband full duplex (SBFD) systems, where both uplink and downlink signals are transmitted simultaneously, leading to interference and inefficient use of frequency resources.
Innovation Solution
A method for determining available time slots for uplink signal transmission by considering the category of symbols, the position of synchronization signal blocks, and frequency domain ranges, allowing terminals to transmit uplink signals on SBFD and non-SBFD symbols based on received information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If subband full duplex (SBFD) is used to transmit both uplink and downlink signals simultaneously, then uplink coverage and throughput are improved, but interference between uplink and downlink signals occurs
Solution Approach 1:
The patent divides the frequency spectrum into multiple subbands, with specific subbands allocated for uplink transmission and others for downlink transmission within the same time slot. This frequency-domain segmentation allows simultaneous uplink and downlink operations while reducing interference through frequency isolation.
Solution Approach 2:
The patent applies different transmission characteristics to different subbands. Specifically, certain subbands are designated as uplink subbands with uplink-only transmission, while other subbands serve as downlink subbands. This local differentiation of transmission quality across frequency resources optimizes both coverage and throughput while managing interference.
2Productivity
If uplink signals are transmitted in multiple time slots including SBFD symbols, then resource utilization is improved, but determination of available time slots becomes complex
Solution Approach 1:
The patent pre-configures uplink time slot patterns and informs terminals in advance which time slots are suitable for uplink transmission. By providing this preliminary information, terminals can determine available time slots without complex real-time analysis, reducing device complexity while maintaining high resource utilization.
Solution Approach 2:
The patent introduces flexible time slot patterns that can be dynamically adjusted based on network conditions. The uplink time slot configuration allows certain time slots to be designated as available or unavailable for uplink transmission, enabling dynamic optimization of resource utilization while providing clear guidance to terminals for simplified determination.
Data Source
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AI summary
The present invention relates to the technical field of communications, and relates to an uplink (UL) communication method and apparatus, and a storage medium, for use in ensuring that a terminal transmits an UL signal on a correct time slot. The method comprises: receiving first information, the first information indicating that the terminal sends an UL signal in M time slots, and M being a positive integer; receiving second information, the second information indicating that the terminal supports sending the UL signal on a first symbol, and the first symbol comprising a subband full-duplex (SBFD) symbol, or the first symbol comprising a non-SBFD symbol, or the first symbol comprising an SBFD symbol and a non-SBFD symbol; and determining a first time slot as an available time slot of the UL signal on the basis of the first information and the second information.