Rate Matching Configuration for Full Duplex Interference
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Solution Overview
Problem
Current wireless communication systems face challenges in managing interference during full duplex communications, particularly due to the lack of effective uplink rate matching, which leads to network performance issues such as cross-link interference and self-interference in full duplex communication modes.
Innovation Solution
Implementing a method for user equipment (UE) and base stations to obtain and utilize rate matching configurations, enabling rate matching in full duplex communication modes. This involves configuring rate matching based on indications received, such as downlink configurations, to avoid and reduce interference by precoding uplink transmissions to match downlink resources and numerologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex communication mode is implemented without rate matching, then communication flexibility and spectral efficiency are improved, but interference (cross-link and self-interference) increases and network performance deteriorates
Solution Approach 1:
The patent applies preliminary action by configuring rate matching patterns before full duplex communication occurs. The base station provides rate matching configuration information to the UE in advance, which includes patterns that indicate which resources should be rate-matched around to avoid interference with uplink transmissions from other UEs. This pre-configuration enables the UE to properly adjust its downlink reception to avoid cross-link interference before the interference occurs.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting rate matching parameters based on communication conditions. The rate matching configuration includes parameters such as rateMatchPatternToAddModList, timeFrequencyMask, and other resource allocation parameters that are modified according to the full duplex operation requirements. These parameter changes enable flexible adaptation of the rate matching behavior to different interference scenarios and traffic conditions.
2Reliability
If rate matching configuration is implemented for full duplex communications, then interference is reduced and network performance is improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent applies universality by designing a unified rate matching configuration framework that serves multiple purposes. The same rate matching configuration mechanism handles both traditional downlink rate matching and the additional requirement of avoiding uplink interference in full duplex mode. The RateMatchPattern and associated configuration elements provide multi-functional support for different types of interference avoidance scenarios, reducing the need for separate specialized mechanisms.
Solution Approach 2:
The patent applies feedback by implementing a configuration system where the base station provides rate matching configuration information to the UE based on observed network conditions and interference patterns. The configuration includes feedback loops where the base station monitors full duplex operation performance and adjusts rate matching parameters accordingly, enabling adaptive optimization that balances performance improvement with configuration complexity management.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain an indication of at least one rate matching configuration. The UE may communicate in a full duplex communication mode, wherein communicating in the full duplex communication mode comprises rate matching based at least in part on the at least one rate matching configuration. Numerous other aspects are described.