Uplink Slot Offset Configuration for 5G PUCCH Scheduling
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a challenge in efficiently managing the timing and resource allocation for uplink transmission, especially when dealing with varying subcarrier spacings and beam switching times, which can lead to delays and interference.
Innovation Solution
The method involves determining a set of slot offset values between the Physical Downlink Shared Channel (PDSCH) and the Physical Uplink Control Channel (PUCCH) based on the subcarrier spacing configuration of the PUCCH, allowing for flexible scheduling and minimizing processing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed slot offset value is used between PDSCH and PUCCH, then the scheduling is simple, but the scheduling flexibility is reduced and processing delays increase
Solution Approach 1:
The patent applies dynamics by making the slot offset value configurable and adaptable rather than fixed. The terminal determines the slot offset value based on processing capability information and beam switching time, allowing the system to dynamically adjust the timing between PDSCH reception and PUCCH transmission according to actual conditions, thereby improving scheduling flexibility while managing complexity
Solution Approach 2:
The patent changes the parameter of slot offset value from a fixed constant to a variable that can be selected from multiple possible values. By determining the appropriate offset based on processing capability and beam switching requirements, the system optimizes timing parameters to reduce delays while maintaining manageable scheduling complexity through standardized selection criteria
2Reliability
If beam switching time is not considered in slot offset determination, then the scheduling is simpler, but interference increases and transmission reliability decreases
Solution Approach 1:
The patent applies preliminary action by having the terminal report its processing capability information to the base station in advance. This allows the base station to pre-determine appropriate slot offset values that account for beam switching time requirements, ensuring that sufficient time is allocated for reliable beam switching before PUCCH transmission, thereby improving transmission reliability without excessive delays
Solution Approach 2:
The patent implements feedback through the terminal's reporting of processing capability information to the base station. This feedback mechanism enables the base station to make informed decisions about slot offset configuration, balancing the need for transmission reliability (by accounting for beam switching time) with the need to minimize processing delays
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. This application relates generally to the field of wireless communication technology, and more particularly, to methods and devices for uplink transmission.