Blank Resource Indication via Group-Common DCI for URLLC
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting information about available resources within a reference time unit, particularly in indicating blank resources to user equipment (UE) for ultra-reliable low latency communication (URLLC) and other services, which affects service availability and resource utilization.
Innovation Solution
A method and apparatus for transmitting information about a blank resource to UE, where the information is conveyed through group-common downlink control information (DCI), allowing UE to receive and decode signals based on this information, even if the reception timing differs from the signal timing, and enabling flexible resource allocation across frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blank resources are indicated to UE for URLLC service, then service availability and resource utilization are improved, but the complexity of resource allocation and information transmission increases
Solution Approach 1:
The patent segments the time-frequency resource into blank resources (for URLLC) and non-blank resources (for other services), allowing differentiated resource allocation and improving service availability while maintaining manageable complexity through clear resource categorization
Solution Approach 2:
The base station transmits downlink control information in advance to indicate blank resources before the actual data transmission, enabling UE to prepare and decode signals appropriately, thus improving reliability without increasing real-time processing complexity
2Productivity
If group-common downlink control information is used to convey blank resource information, then information transmission efficiency is improved, but the precision of resource indication may be reduced
Solution Approach 1:
The downlink control information is designed to serve multiple functions: it conveys both scheduling information for other services and blank resource indications for URLLC, improving transmission efficiency while maintaining sufficient precision through multi-purpose field design
Solution Approach 2:
The patent applies different indication methods for different resource types within the same control information structure, using localized quality adjustments to ensure precise blank resource indication while maintaining overall efficiency
3Adaptability or versatility
If flexible resource allocation across frequency bands is enabled, then adaptability of the system is improved, but the complexity of signal decoding increases
Solution Approach 1:
The system enables dynamic resource allocation where blank resources can be configured at different time instances and frequency locations, improving adaptability while using standardized decoding procedures to manage complexity
Solution Approach 2:
The downlink control information acts as an intermediary that conveys flexible allocation instructions from the base station to the UE, enabling adaptive resource configuration without directly increasing decoding complexity through clear intermediate signaling
Data Source
AI summary
The present invention discloses a method for a terminal receiving a signal from a base station and a particular communication apparatus in a wireless communication system. Specifically, the method is characterised by the steps of: receiving information regarding an allocated blank resource from the base station in order to receive a first signal for a first wireless communication service; receiving the first signal on the blank resource, and receiving a second signal for a second wireless communication service on resources apart from the blank resource; and decoding one or more of the first signal and the second signal based on the blank resource information.