Full Duplex Scheduling Overwrite Management
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Solution Overview
Problem
In wireless communication systems, full duplex communication scenarios are challenged by dynamic grants that overwrite semi-persistent scheduling occasions, leading to self-interference issues and poor user experience due to increased latency and resource wastage.
Innovation Solution
A method for wireless communication that involves receiving control messages from a base station to activate semi-static scheduling configurations for full duplex communication. This includes managing scenarios where dynamic grants overwrite existing scheduling occasions by determining whether to proceed with communications using incompatible beams, thereby reducing self-interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic grants are used to overwrite semi-persistent scheduling occasions in full duplex communication, then scheduling flexibility and resource utilization are improved, but self-interference increases and user experience deteriorates due to latency and resource wastage
Solution Approach 1:
The patent applies preliminary action by determining beam compatibility before allowing the dynamic grant to overwrite the semi-persistent scheduling occasion. The base station checks whether the first beam for the dynamic grant and the second beam for the semi-persistent scheduling are compatible in advance. If they are compatible, the overwrite is permitted; if not, the overwrite is prevented. This pre-check mechanism resolves the contradiction by enabling scheduling flexibility only when it does not cause harmful self-interference.
2Productivity
If dynamic grants overwrite semi-persistent scheduling occasions, then resource utilization is improved, but latency increases and user experience worsens
Solution Approach 1:
The patent implements feedback by having the base station determine beam compatibility and make a decision based on this information. The base station receives the dynamic grant, checks beam compatibility with the existing semi-persistent scheduling, and only permits the overwrite if compatibility is confirmed. This feedback-driven approach ensures that resource utilization is improved through overwriting while preventing latency issues that would arise from incompatible beam configurations causing communication failures or retransmissions.
Data Source
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AI summary
Certain aspects of the present disclosure provide techniques for communicating a dynamically scheduled transmission that overwrites a transmission in a semi-static scheduling occasion. A method performed by a user equipment (UE) includes receiving a first control message, activating a first semi-static scheduling configuration and a second semi-static scheduling configuration for full duplex communication, wherein: the first semi-static scheduling configuration comprises a semi -persistent scheduling (SPS) occasion and the second semi-static scheduling configuration comprises a configured grant (CG) occasion. The method may further include receiving a second control message dynamically scheduling a transmission that overwrites a downlink transmission in the SPS occasion or an uplink transmission in the CG occasion and taking one or more actions to communicate at least the transmission that overwrites the downlink transmission in the SPS occasion or the uplink transmission in the CG occasion.