Full-Duplex Uplink Rate Matching for PUSCH Resource Availability
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Solution Overview
Problem
In full duplex wireless communication systems, simultaneous downlink and uplink transmissions on the same carrier cause self-interference, particularly in user equipment (UE), which complicates the determination of available resources for uplink shared channel (PUSCH) transmission due to reserved resources configured by rate match patterns.
Innovation Solution
The UE and base station (BS) employ rate match patterns and pattern groups to determine availability of physical resources in uplink subbands for PUSCH transmission, considering activated and deactivated reserved resources, and utilize DCI for dynamic control of these patterns to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rate match patterns are configured for PDSCH transmission to reserve resources, then downlink transmission reliability is improved, but uplink resource availability deteriorates
Solution Approach 1:
The patent implements dynamic rate match pattern groups that can be activated or deactivated based on traffic conditions. The network can dynamically switch between different rate match pattern groups to adapt to changing uplink and downlink resource requirements, making the resource reservation flexible rather than static.
Solution Approach 2:
The patent divides rate match patterns into multiple groups, where each group contains specific rate match patterns. This segmentation allows selective activation of different pattern groups depending on whether uplink or downlink resources need to be prioritized, enabling granular control over resource allocation.
2Reliability
If reserved resources are configured by rate match patterns for PDSCH, then downlink resource protection is improved, but uplink transmission flexibility deteriorates
Solution Approach 1:
The system enables dynamic switching between different rate match pattern groups through activation and deactivation mechanisms. When uplink flexibility is needed, the network can deactivate rate match patterns that would otherwise reserve resources, allowing dynamic adaptation to varying transmission requirements.
Solution Approach 2:
The patent pre-configures multiple rate match pattern groups with different resource reservation characteristics. This preliminary configuration allows the system to quickly switch to appropriate patterns without real-time computation, enabling fast adaptation to changing transmission needs while maintaining downlink protection when required.
3Ease of operation
If whole symbols including reserved resources are determined as unavailable for PUSCH, then resource allocation simplicity is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent segments the resource availability determination into two approaches: whole-symbol level simplicity and granular resource-level precision. By providing multiple determination modes, the system can select the appropriate level of granularity based on whether simplicity or efficiency is the priority for current traffic conditions.
Solution Approach 2:
The system dynamically selects between different resource availability determination methods. When resource utilization efficiency is prioritized, the system uses the more granular approach that identifies specific available resources within symbols. When simplicity is prioritized, the whole-symbol unavailability approach is used.
Data Source
AI summary
Embodiments of the present disclosure relate to methods and apparatuses for uplink (UL) transmission in a full duplex (FD) system. According to some embodiments of the disclosure, a user equipment (UE) may include: a transceiver configured to receive configurations of one or more rate match patterns; and a processor coupled to the transceiver and configured to determine whether physical resources in an uplink (UL) subband are available or not for a physical uplink shared channel (PUSCH) transmission based on the one or more rate match patterns.