Semi-Persistent Scheduling Bitmap Activation for Radio Resource Management
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Solution Overview
Problem
The increasing number of user equipment (UEs) requiring service from a base station (BS) within a prescribed resource region leads to a demand for efficient transmission and reception of uplink and downlink data and control information using limited radio resources, while also necessitating reduced latency and effective communication in systems supporting new radio access technology.
Innovation Solution
The implementation of a method where the UE receives an SPS command with a bitmap indicating the activation or deactivation of multiple SPS resource configurations, allowing for efficient management of radio resources and reduced latency through semi-persistent scheduling, enabling effective communication in new radio access technology systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of user equipment (UEs) requiring service from a base station (BS) increases, then the communication capacity demand increases, but the available radio resources remain limited
Solution Approach 1:
The patent applies preliminary action by configuring multiple semi-persistent scheduling (SPS) resource patterns in advance at the UE. These pre-configured patterns include downlink and uplink SPS resources with different periodicities, allowing the system to quickly activate appropriate patterns without real-time resource allocation overhead when traffic demands change, thus efficiently utilizing limited radio resources for increasing UE capacity.
Solution Approach 2:
The patent implements dynamics by enabling the BS to dynamically activate or deactivate specific SPS resource patterns based on real-time traffic conditions. The network can switch between different pre-configured patterns with varying periodicities and resource allocations, allowing flexible adaptation to changing communication capacity demands while efficiently managing limited radio resources.
2Loss of time
If traditional dynamic scheduling is used to manage multiple UEs, then resource allocation flexibility is maintained, but latency increases due to continuous scheduling overhead
Solution Approach 1:
The patent applies segmentation by dividing the scheduling mechanism into two parts: pre-configured SPS resource patterns that eliminate continuous scheduling overhead for periodic traffic, and dynamic scheduling that remains available for aperiodic traffic. This segmentation reduces latency for time-sensitive periodic communications while maintaining scheduling flexibility for other traffic types.
Solution Approach 2:
The patent implements periodic action through semi-persistent scheduling where resources are allocated periodically based on pre-configured patterns rather than through continuous dynamic scheduling. This periodic allocation eliminates the latency associated with repeated scheduling requests and allocations, significantly reducing loss of time for periodic traffic while maintaining overall scheduling efficiency.
3Productivity
If multiple SPS resource configurations are supported, then resource utilization efficiency improves, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure multiple SPS resource patterns with different periodicities and resource allocations before traffic demands arise. The UE stores these pre-configured patterns and simply activates or deactivates them based on network instructions, avoiding the complexity of dynamically calculating and managing multiple resource configurations in real-time, thus improving resource utilization without significantly increasing UE complexity.
Data Source
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Figure 3
Figure 4(a)~4(b)
AI summary
In the present invention, a user equipment (UE) receives semi-persistent scheduling (SPS) configuration information on N SPS resource configurations, where N is an integer larger than 1. The UE receives an SPS command to activate or deactivate each of multiple SPS resource configurations among the N SPS resource configurations. The UE performs downlink reception or uplink transmission in an SPS resource corresponding to an SPS resource configuration among activated SPS resource configurations. The SPS command includes information indicating each of the multiple SPS resource configurations and information indicating whether a corresponding SPS resource configuration is activated or deactivated.