Configured-Grant PUSCH Bitmaps for Uplink Signal Control
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in signal transmission and reception procedures, particularly in managing configured grant (CG) occasions for uplink transmissions, leading to suboptimal resource utilization and potential inaccuracies in uplink control information (UCI) handling.
Innovation Solution
A method and apparatus are introduced for a user equipment (UE) to utilize a configured grant (CG) configuration for uplink transmission, where a bitmap is used to indicate whether to transmit or not transmit on subsequent CG-PUSCH occasions, allowing dynamic control of PUSCH transmissions based on UCI, and a base station (BS) to receive and interpret this information for efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE transmits UCI indicating whether to transmit on subsequent CG-PUSCH occasions, then the accuracy of uplink control information handling is improved, but the device complexity increases due to bitmap processing and dynamic control mechanisms
Solution Approach 1:
The UCI is segmented into multiple parts: a bitmap indicating whether to transmit on subsequent CG-PUSCH occasions, and optionally, actual UCI data. This segmentation allows the UE to flexibly control transmission based on data availability while maintaining manageable complexity through structured information organization.
Solution Approach 2:
The transmission mechanism is made dynamic through the bitmap, which allows the UE to adaptively decide whether to transmit on subsequent CG-PUSCH occasions based on current conditions (data availability, channel conditions). This dynamic control improves accuracy while the standardized bitmap format keeps complexity manageable.
2Productivity
If the UE uses bitmap to indicate transmission status for multiple CG-PUSCH occasions, then the efficiency of resource management is improved, but the loss of time increases due to additional signaling and processing requirements
Solution Approach 1:
The bitmap is prepared and transmitted in advance (in the first UCI) to indicate future transmission intentions for multiple CG-PUSCH occasions. This preliminary action allows the base station to prepare reception parameters beforehand, reducing real-time processing time and improving overall efficiency despite the additional signaling.
Solution Approach 2:
The mechanism maintains continuous useful action by allowing multiple CG-PUSCH occasions to be efficiently managed through the bitmap indication. Once the bitmap is set, the UE can continuously transmit or skip transmissions without repeated signaling, maintaining efficient resource utilization while minimizing repeated time-consuming signaling operations.
3Reliability
If the base station receives and processes UCI with bitmap information for CG-PUSCH occasions, then the reliability of signal reception is improved, but the use of energy increases due to additional reception and processing operations
Solution Approach 1:
The base station receives the bitmap in the UCI as feedback information indicating the UE's transmission intentions for subsequent CG-PUSCH occasions. This feedback mechanism improves reliability by ensuring the base station is properly prepared for actual transmissions. The energy cost is managed because the bitmap provides advance knowledge, allowing the base station to optimize its reception energy usage based on the indicated transmission pattern.
Data Source
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AI summary
A method for transmitting a signal by a terminal in a wireless communication system according to at least one of embodiments disclosed in the present specification may comprise: receiving a configured grant (CG) configuration for uplink transmission; and transmitting a first PUSCH including first uplink control information (UCI) in a first CG-physical uplink shared channel (PUSCH) occasion among CG-PUSCH occasions related to the CG configuration, wherein the first UCI includes information indicating whether the terminal is not to transmit a second PUSCH in a second CG-PUSCH occasion located after the first CG-PUSCH occasion.