5G Terminal Scheduling Restriction for Data Rate Alignment
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Solution Overview
Problem
In 5G wireless communication systems, the scheduling of data transmission and reception can exceed the maximum data rate supported by terminals, leading to inefficiencies and processing limitations, particularly due to variations in instantaneous data rates and service-specific requirements.
Innovation Solution
A method and device for terminals to monitor the physical downlink control channel (PDCCH) to determine scheduling restriction conditions based on downlink control information (DCI), ensuring that data transmission through the physical downlink shared channel (PDSCH) adheres to the terminal's capabilities, thereby preventing data rate exceedance and optimizing data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station schedules data transmission at instantaneous data rates higher than the terminal's maximum supported data rate, then the network resource utilization and throughput are improved, but the terminal cannot process the data correctly leading to scheduling failures and reduced reliability
Solution Approach 1:
The terminal performs preliminary calculations of its maximum supported data rate based on configured parameters (maximum frequency band, maximum modulation order, maximum number of layers) before actual data transmission. The base station uses this pre-calculated information to determine scheduling restriction conditions, ensuring that scheduled data rates do not exceed terminal capabilities. This preliminary preparation prevents scheduling failures before they occur.
Solution Approach 2:
The patent introduces dynamic scheduling restriction conditions that adapt to terminal capabilities. The base station determines whether scheduling restrictions apply based on the terminal's specific configuration and current state. This dynamic adjustment allows the system to optimize throughput for capable terminals while ensuring reliable processing for terminals with lower capabilities, resolving the contradiction between maximizing throughput and ensuring reliability.
2Reliability
If the base station applies strict scheduling restrictions to ensure terminal processing capability, then the terminal can reliably process all scheduled data, but the network resource utilization and overall system efficiency deteriorate
Solution Approach 1:
The patent applies scheduling restrictions locally and selectively rather than universally. The base station determines scheduling restriction conditions based on each terminal's specific capabilities (maximum frequency band, maximum modulation order, maximum number of layers). Terminals with higher capabilities can utilize more network resources without restrictions, while terminals with lower capabilities receive appropriate restrictions. This localized approach ensures reliability for each terminal while maximizing overall network resource utilization.
3Productivity
If the terminal supports higher maximum data rates with more frequency bands, higher modulation orders, and more layers, then the potential throughput increases, but the device complexity and processing requirements increase
Solution Approach 1:
The patent uses parameter changes to manage terminal capabilities. The terminal's maximum supported data rate is determined by configurable parameters (maximum frequency band, maximum modulation order, maximum number of layers). These parameters can be adjusted based on terminal capabilities and network conditions. By changing these parameters, the system can adapt the terminal's processing requirements to match its actual capabilities, allowing high-throughput operation when capable while reducing complexity when resources are limited.
Data Source
AI summary
The present disclosure relates to a communication technique for combining IoT technology with a 5G communication system for supporting a higher data transmission rate than 4G systems; and a system therefor. The present disclosure can be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security- and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The method for a terminal in a wireless communication system, according to the present disclosure, comprises the steps of: monitoring a physical downlink control channel (PDCCH); identifying, basis on downlink control information (DCI) decoded as result of the monitoring, whether to determine for a scheduling restriction condition; identifying whether a physical downlink shared channel (PDSCH) scheduled by the DCI satisfies the scheduling restriction condition, in case that determining for the scheduling restriction condition is necessary; and receiving, from a base station, data via the PDSCH, in case that the scheduling restriction condition is satisfied. The present disclosure relates to a method and device for transmitting and receiving a signal in a wireless communication system. The method, according to one embodiment of the present disclosure, may determine a peak data rate supportable by a terminal, compare the peak data rate and an actual data rate determined from scheduling information, and transmit a signal according to the scheduling information on the basis of the result of the comparison.