Joint DCI Transmission for 5G Network Slice Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the 5G network slice environment, the method for user equipment (UE) to blindly detect downlink control information (DCI) carried on physical downlink control channels (PDCCHs) corresponding to different network slices becomes particularly complicated, leading to increased complexity and time delay in DCI blind detection, which in turn raises concerns about power consumption and resource utilization.
Innovation Solution
The proposed solution involves generating multiple DCIs with a slice indication field to indicate the corresponding network slice, performing bit padding to ensure all DCIs have the same length, and adding position indication fields to facilitate sequential detection, allowing the UE to determine the position of the next DCI, thereby simplifying the detection process and reducing the number of blind detection searches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate DCI detection is performed for each network slice, then service-specific control accuracy is improved, but detection complexity increases
Solution Approach 1:
The patent combines multiple DCIs for different network slices into a single joint DCI message. Instead of transmitting separate DCIs for each network slice, the base station aggregates the control information for multiple slices (e.g., slice 1 and slice 2) into one unified DCI structure that the UE can detect in a single blind detection process, thereby reducing detection complexity while maintaining service-specific control capability through slice indication fields within the joint DCI
Solution Approach 2:
The patent creates a universal DCI structure that can serve multiple network slices simultaneously. The joint DCI includes slice indication fields that identify which network slices the control information applies to, allowing a single DCI message to function as control for multiple different services and slices, thereby reducing the number of separate DCI transmissions and detections required
2Loss of information
If multiple separate DCIs are transmitted for different network slices, then control information completeness is improved, but time delay increases
Solution Approach 1:
The patent merges multiple DCI transmissions into a single joint DCI transmission. By combining the control information for multiple network slices into one message that is transmitted simultaneously, the system eliminates the sequential transmission delays that would occur if separate DCIs were sent one after another, while still providing complete control information for all relevant slices through the joint structure
3Measurement precision
If blind detection is performed across multiple searching spaces, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent merges multiple blind detection operations into a single detection process. Instead of requiring the UE to perform separate blind detection across multiple searching spaces for different network slices, the joint DCI structure allows the UE to detect all necessary control information in one blind detection attempt, significantly reducing power consumption while maintaining detection accuracy through the unified structure
Data Source
AI summary
The present disclosure provides a downlink control information transmission method, including generating more than one downlink control information (DCI) according to scheduling information of a user equipment (UE); determining a detection order of the more than one DCI and positions of the more than one DCI in a searching space; adding a position indication field to a respective DCI according to the detection order of the more than one DCI and the positions of the more than one DCI in the searching space; wherein, the position indication field is used to indicate a position of a next DCI of the respective DCI in the detection order; in which, a position indication field in a last DCI in the detection order is used to indicate a position of a first DCI in the detection order; and transmitting the more than one DCI in the searching space according to the positions of the more than one DCI in the searching space. The present disclosure also provides a UE-side method, a corresponding base station and a UE.