Uplink Resource Prioritization for Cross-Cell PUCCH-PUSCH Overlap
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Solution Overview
Problem
In wireless communication systems, simultaneous transmission of PUCCH and PUSCH in different cells is challenging due to limitations in PUCCH transmit power, making it difficult to perform concurrent data transmission.
Innovation Solution
A method for a wireless communication system that involves identifying overlapping transmission time intervals of uplink resources with different priorities in a MAC entity, determining prioritized uplink resources for simultaneous transmission, and allowing or disallowing simultaneous transmission of PUCCH and PUSCH based on logical channel-based prioritization operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUCCH and PUSCH transmission are configured in different cells, then data transmission capability is improved, but simultaneous transmission cannot be performed due to PUCCH transmit power limitations
Solution Approach 1:
The MAC entity performs preliminary identification of overlapping transmission time intervals between PUCCH and PUSCH resources in different cells. By checking for temporal overlaps before transmission occurs, the system pre-determines transmission conflicts and applies prioritization rules to resolve them, enabling reliable simultaneous transmission configuration while avoiding actual power conflicts.
2Use of energy by moving object
If PUCCH transmit power is limited, then power consumption is controlled, but simultaneous transmission with PUSCH becomes difficult
Solution Approach 1:
The system changes the parameter of transmission time interval allocation by identifying and adjusting TTI overlaps between PUCCH and PUSCH. By modifying temporal parameters rather than power parameters, the system resolves conflicts without increasing PUCCH transmit power, maintaining energy efficiency while enabling simultaneous transmission capability.
3Productivity
If transmission time intervals of PUCCH and PUSCH overlap, then transmission efficiency is improved, but transmission conflicts occur
Solution Approach 1:
The MAC entity implements a feedback mechanism that identifies overlapping TTI intervals between PUCCH and PUSCH resources. By detecting temporal conflicts and providing feedback through prioritization decisions, the system maintains transmission efficiency while preventing conflicts through intelligent resource management.
Solution Approach 2:
The system performs preliminary identification of overlapping transmission time intervals before actual transmission occurs. By checking for temporal overlaps in advance and applying prioritization rules pre-emptively, the system maintains efficient overlapping transmissions while preventing conflicts through advance planning.
Data Source
AI summary
The disclosure relates to a communication technique and a system for converging a 5G communication system with IoT technology to support a higher data rate after a 4G system. Based on 5G communication technology and IoT-related technologies, the disclosure can be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, etc.). The disclosure provides a method and apparatus for selecting data to be transmitted when data transmission occurs simultaneously in different cells.