Semi-Persistent Scheduling Frequency Band Switching
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Solution Overview
Problem
The increasing number of user equipment (UEs) and data volume in wireless communication systems pose challenges in efficiently transmitting and receiving data within limited radio resources, while also requiring reduced latency and support for new radio access technologies.
Innovation Solution
A method and apparatus for user equipment (UE) in a wireless communication system that employs semi-persistent scheduling (SPS) by receiving information about SPS transmission periods and repetitions, switching frequency bands when the SPS period is shorter than the number of repetitions, and maintaining the same frequency band when the period is longer, to optimize data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semi-persistent scheduling (SPS) is used to transmit data repeatedly, then data transmission reliability is improved, but frequency band switching complexity increases when SPS period is shorter than number of repetitions
Solution Approach 1:
The patent applies dynamics by making the frequency band configuration adaptive based on the relationship between SPS transmission period and number of repetitions. When the period is shorter than repetitions, frequency hopping is activated; when the period is longer, the same frequency band is maintained. This dynamic adjustment resolves the contradiction by simplifying the system state based on operational conditions.
2Reliability
If frequency band switching is implemented in SPS mode, then frequency diversity is improved, but signal transmission time increases
Solution Approach 1:
The patent applies periodic action by implementing frequency band switching at regular intervals determined by the SPS transmission period. The frequency hopping occurs periodically based on the relationship between the transmission period and number of repetitions, providing frequency diversity while maintaining predictable timing that minimizes overall transmission time.
3Reliability
If the number of SPS repetitions is increased, then data reception reliability is improved, but latency increases
Solution Approach 1:
The patent applies dynamics by adjusting the frequency band configuration based on the SPS transmission period and number of repetitions relationship. This adaptive approach optimizes the balance between reliability and latency by simplifying the transmission configuration under different operational conditions, thereby reducing unnecessary delays while maintaining reception reliability.
Data Source
AI summary
The present invention relates to a wireless communication system and provides a method and a device for same. The method comprises the steps of: receiving information about SPS transmission periods; confirming information about the number of SPS repetitions; and receiving SPS data, which is newly and repeatedly transmitted in every SPS transmission period, on the basis of the SPS transmission periods and the number of the SPS repetitions, wherein, if the SPS transmission periods are greater than the number of the SPS repetitions, a frequency band in which the SPS data is received is maintained to be the same in every SPS transmission period and, if the SPS transmission periods are smaller than the number of the SPS repetitions, the frequency band in which the SPS data is received is switched in every SPS transmission period.