Joint DCI Activation and Deactivation for Semi-Persistent Configurations
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Solution Overview
Problem
Challenges arise in multi-channel wireless communications due to static configuration across data channels, leading to underutilization, latency, and variability in periodic communications like XR applications, which are inherently variable in packet size, arrival time, and traffic flow characteristics.
Innovation Solution
Implementing joint activation and deactivation of multiple semi-persistent communication configurations using a single DCI transmission to reduce control signal overhead and improve resource allocation efficiency, particularly for XR communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate DCI transmissions are used for each semi-persistent communication configuration, then each configuration can be activated independently, but control signal overhead increases and resource allocation efficiency decreases
Solution Approach 1:
The patent combines multiple separate DCI transmissions into a single joint DCI transmission that activates multiple semi-persistent communication configurations simultaneously. The joint DCI includes a joint activation indication that controls a set of configurations through a single control signal, reducing overhead while maintaining independent activation capability through the configured set approach
2Reliability
If multiple DCI transmissions are used for configuration activation, then precise control is achieved, but latency increases and throughput decreases
Solution Approach 1:
The patent implements preliminary configuration setup where multiple semi-persistent communication configurations are pre-configured with their parameters and indices. The joint DCI then activates these pre-prepared configurations simultaneously, reducing activation latency while maintaining precise control through the structured configuration set and joint activation indication mechanism
3Device complexity
If static configuration is used across data channels, then system simplicity is maintained, but resource utilization is underoptimized for variable traffic patterns
Solution Approach 1:
The patent introduces dynamic activation control for semi-persistent communication configurations through the joint DCI transmission. Instead of static configuration across all channels, the system dynamically activates or deactivates specific configurations based on actual traffic needs, allowing optimized resource utilization for variable traffic patterns like XR applications while maintaining manageable system complexity
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive configuration information indicative of a plurality of semi-persistent communication configurations, wherein each semi-persistent communication configuration corresponds to a respective configuration index of a plurality of configuration indexes. The network node may receive a downlink control information (DCI) transmission comprising a joint activation or deactivation indication indicative of an activation or a deactivation of a set of semi-persistent communication configurations of the plurality of semi-persistent communication configurations, the set of semi-persistent communication configurations comprising one or more semi-persistent communication configurations. The network node may communicate based on the set of semi-persistent communication configurations. Numerous other aspects are described.