Sub-band Non-overlapping Full Duplex Antenna Switching
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Solution Overview
Problem
In 5G new radio (NR) systems, time division duplexing (TDD) faces challenges such as reduced coverage, increased latency, and reduced capacity due to limited uplink time duration, which can be mitigated by implementing sub-band non-overlapping full duplex (SBFD) with antenna switching.
Innovation Solution
The proposed solution involves determining information related to antenna switching by a second apparatus within a subset of SBFD patterns, and determining at least one time point for antenna switching based on this information, allowing for efficient antenna switching in SBFD patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If time division duplexing (TDD) is used with limited uplink time duration, then system simplicity is maintained, but uplink coverage is reduced, latency is increased, and capacity is reduced
Solution Approach 1:
The patent segments the frequency band into multiple sub-bands and allows different duplexing modes in different sub-bands. Specifically, it enables full duplex transmission in certain sub-bands while maintaining TDD in others, thereby improving uplink coverage without requiring complete system redesign.
Solution Approach 2:
The patent applies different transmission qualities to different frequency regions. By enabling simultaneous downlink and uplink transmission in specific sub-bands while maintaining TDD in other sub-bands, it creates local optimization of transmission performance without compromising overall system simplicity.
2Productivity
If antenna switching is implemented in all SBFD patterns, then full duplex performance is maximized, but channel reciprocity is degraded due to transition periods
Solution Approach 1:
The patent applies antenna switching selectively rather than universally. It configures antenna switching for only a subset of SBFD patterns where full duplex transmission is required, while omitting it in patterns where channel reciprocity is more critical, thereby achieving partial optimization without excessive disruption to channel characteristics.
Solution Approach 2:
The patent dynamically configures antenna switching based on the specific SBFD pattern requirements. Different antenna switching configurations are applied to different SBFD patterns, allowing the system to adapt to varying transmission needs and maintain channel reciprocity when necessary.
Data Source
AI summary
Example embodiments of the present disclosure relate to methods, devices, apparatuses and computer readable storage medium of configuration of sub-band non-overlapping full duplex (SBFD) with antenna switching. In a method, a first apparatus determines information related to antenna switching by a second apparatus within a subset of SBFD patterns of a set of SBFD patterns. The first apparatus determines, at least based on the information related to the antenna switching, at least one time point for antenna switching