Configured Grant Uplink Skipping for SBFD Resource Overlap
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Solution Overview
Problem
In 5G NR systems, configured grant (CG) PUSCH transmissions can overlap with subband non-overlapping full duplex (SBFD) operations, leading to interference and performance degradation due to the semi-static nature of CG PUSCH resource allocation, which complicates resource management and increases signaling overhead.
Innovation Solution
A communication device and base station are equipped with circuitry to determine whether to initiate or skip CG PUSCH based on an association between the CG PUSCH configuration and applicable symbol types, ensuring alignment with SBFD resources, thereby avoiding overlapping and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semi-static CG PUSCH resource allocation is used, then uplink transmission reliability is improved, but resource management complexity and signaling overhead increase when overlapping with SBFD operations
Solution Approach 1:
The patent introduces dynamic determination mechanisms that allow the communication device to adaptively decide whether to perform or skip CG PUSCH transmission based on real-time resource type configurations and overlap conditions, transforming the static resource allocation into a dynamic decision-making process that resolves conflicts between reliability and management complexity
Solution Approach 2:
The patent employs preliminary configurations of resource types and applicable symbol types for CG PUSCH before actual transmission occurs. The network configures the communication device with resource type information and applicability indicators in advance, enabling the device to pre-determine transmission decisions based on predetermined rules, thereby reducing real-time management complexity while maintaining reliability
2Productivity
If CG PUSCH transmission is performed on overlapping resources, then resource utilization is improved, but interference with SBFD operations increases
Solution Approach 1:
The patent applies local quality differentiation by associating CG PUSCH configurations with specific applicable symbol types or resource types. Different portions of the time-frequency resources are designated with different qualities or applicability levels, allowing the system to selectively enable or disable CG PUSCH transmission in specific local regions (time slots or symbols) where SBFD operations occur, thereby preventing interference while maintaining resource utilization in non-conflicting regions
Solution Approach 2:
The patent introduces resource type configurations and applicability indicators as intermediary elements between the CG PUSCH transmission and SBFD operations. These intermediaries act as mediators that carry information about resource compatibility, enabling the system to intelligently determine whether CG PUSCH should be transmitted on overlapping resources based on the intermediary's indication of applicability, thus resolving the conflict between resource utilization and interference prevention
3Measurement precision
If resource type configurations are provided for all time resources, then transmission accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent implements partial action by providing resource type configurations and applicability indicators only for specific time resources where CG PUSCH transmission decisions need to be made, rather than configuring all time resources uniformly. The network selectively provides configuration information for resources that are relevant to CG PUSCH operations, reducing signaling overhead while maintaining sufficient transmission accuracy for decision-making
Solution Approach 2:
The patent creates universal configuration structures that serve multiple functions: resource type configurations not only indicate the type of time resource but also implicitly provide information about CG PUSCH applicability. The same configuration mechanism serves both resource characterization and transmission decision-making purposes, reducing the need for separate signaling and thereby lowering overhead while maintaining transmission accuracy
Data Source
AI summary
Provided are a communication device, a base station, and methods for a communication device and a base station. The communication device comprises a transceiver, which receives a transmission configuration defining a first time resource for a semi-statically configured uplink transmission applicable to an associated resource type, and a resource type configuration defining a resource type of a second time resource, and circuitry, which, based on the transmission configuration and the resource type configuration, makes a determination on whether to initiate performing or skip the semi-statically configured uplink transmission on the first time resource. The circuitry determines to skip the uplink transmission if the first time resource overlaps with the second time resource and if the uplink transmission is not applicable to the resource type of the second time resource, and the transceiver, in operation, performs or skips the semi-statically configured uplink transmission in accordance with a result of the determination.