Dynamic Resource Indication for NR Control Channel Latency
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Solution Overview
Problem
The existing NR system's RRC configuration for CORESET and search space has high latency, limiting flexibility and increasing power consumption in scenarios requiring rapid data transmission and adaptive channel detection.
Innovation Solution
A dynamic resource indication mechanism that allows the network to dynamically configure DL control channel transmission resources, enabling UE to activate or deactivate specific resources based on indication information, reducing latency and improving flexibility and power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If RRC configuration is used to configure CORESET and search space, then the configuration can be established, but the latency is high (dozens to hundreds of milliseconds or more)
Solution Approach 1:
The patent introduces dynamic resource indication through MAC CE or DCI formats that can activate or deactivate pre-configured search spaces and CORESETS in real-time. This allows the system to transition from static RRC configuration to dynamic resource allocation, reducing configuration latency while maintaining adaptability through on-the-fly resource activation/deactivation based on channel conditions and traffic requirements.
Solution Approach 2:
The patent pre-configures multiple search spaces and CORESETS through RRC configuration before actual data transmission. When data needs to be transmitted, the network can quickly activate a pre-configured search space using MAC CE or DCI indication, avoiding the need for full RRC reconfiguration. This preliminary configuration approach enables rapid resource allocation while maintaining system flexibility.
2Adaptability or versatility
If RRC configuration is used to change CORESET and search space configuration, then the configuration can be updated, but the latency is relatively large (dozens to hundreds of milliseconds or more)
Solution Approach 1:
The patent implements dynamic resource indication mechanisms using MAC CE (Medium Access Control Control Element) or DCI (Downlink Control Information) formats to activate or deactivate search spaces and CORESETS. This dynamic approach allows configuration updates to occur in milliseconds rather than dozens to hundreds of milliseconds, significantly reducing update latency while maintaining full adaptability for different channel conditions and traffic patterns.
Solution Approach 2:
The patent segments the configuration update process into two independent parts: (1) RRC configuration that defines multiple candidate search spaces and CORESETS in advance, and (2) MAC CE or DCI indication that selectively activates specific configurations. This segmentation allows the system to maintain adaptability through multiple configuration options while achieving rapid updates through lightweight activation signals, avoiding the need for complete RRC reconfiguration.
3Reliability
If UE continuously monitors DL control channel on all configured resources, then no data is missed, but power consumption increases
Solution Approach 1:
The patent enables dynamic activation and deactivation of search spaces and CORESETS through MAC CE or DCI indications. The UE only monitors DL control channels on actively indicated resources rather than continuously monitoring all pre-configured resources. This dynamic monitoring approach maintains data reception reliability by ensuring the UE monitors the correct active resources while significantly reducing power consumption by disabling monitoring on deactivated resources.
Solution Approach 2:
The network dynamically indicates which search spaces and CORESETS the UE should monitor through MAC CE or DCI formats. This self-service mechanism allows the system to automatically adjust monitoring resources based on current traffic conditions and channel quality, ensuring the UE monitors only necessary resources for reliable data reception while minimizing unnecessary power consumption from monitoring inactive resources.
Data Source
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AI summary
A resource indication method and apparatus and a computer storage medium are provided. The method includes that: a terminal device receives first indication information from a network device, the first indication information indicating an active transmission resource and/or an inactive transmission resource; and based on the first indication information, the terminal device detects a downlink control channel on the active transmission resource and/or does not detect a downlink control channel on the inactive transmission resource.