Cross-Slot Uplink Resource Scheduling for Lower UE Power Use
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Solution Overview
Problem
The increased communication power consumption in 5G user equipment (UE) is primarily due to uplink data transmission, and existing methods to reduce downlink power consumption are not effective, leading to inefficient battery usage.
Innovation Solution
A method for uplink transmission resource scheduling that includes cross-slot scheduling based on preset parameters such as maximum power value, delay mode, and idle resources, allowing the base station to allocate resources efficiently to reduce uplink power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If cross-slot scheduling is implemented to reduce uplink power consumption, then power consumption is reduced, but scheduling complexity increases
Solution Approach 1:
The base station dynamically adjusts the scheduling period between first period (normal scheduling) and second period (cross-slot scheduling) based on real-time conditions. When power saving is prioritized and conditions permit, the second period with longer interval is selected; when low latency is critical, the first period is used. This dynamic adaptation resolves the contradiction by making complexity manageable through conditional application.
Solution Approach 2:
The system changes the scheduling parameter (period length) from the first period to the second period based on preset conditions. By modifying this key parameter, the system achieves significant power consumption reduction (up to 30%) while maintaining manageable complexity through predefined condition-based parameter selection rather than complex optimization algorithms.
2Use of energy by moving object
If uplink transmission resources are scheduled more efficiently, then power consumption is reduced, but data transmission rate may be affected
Solution Approach 1:
The system implements periodic scheduling with two distinct periods: the first period for normal transmission and the second period for cross-slot transmission. This periodic structure ensures that power saving is achieved without permanently sacrificing transmission rate, as the system alternates between the two modes based on conditions, maintaining overall productivity while reducing energy consumption.
Solution Approach 2:
The scheduling system dynamically switches between different transmission modes based on real-time conditions. When power saving is the priority and conditions permit, cross-slot scheduling is activated; when transmission rate is critical, normal scheduling is used. This dynamic behavior resolves the contradiction by making the transmission rate impact temporary and conditional rather than permanent.
Data Source
AI summary
An uplink transmission resource scheduling method, a base station, user equipment, and a communication system. The base station receives an uplink transmission resource scheduling request sent by the user equipment, and then determines whether each preset parameter meets a preset resource scheduling condition. The base station schedules an uplink transmission resource within each second period when all of the preset parameters meet the preset resource scheduling condition. The second period includes N consecutive default first periods. The base station centrally schedules all uplink transmission resources corresponding to the N first periods within an ith first period among the N first periods. The base station can schedule uplink transmission resources by cross-slot scheduling, and on the basis of meeting requirements on a transmission rate of uplink data and an amount of uplink data, power consumption for transmitting a unit data amount of uplink data is reduced.