D-PDCCH Detection via Antenna Port Configuration
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Solution Overview
Problem
In existing LTE systems, user equipment (UE) struggles to detect D-PDCCHs based on MIMO precoding, leading to capacity limitations and inability to perform data transmission when D-PDCCH detection fails.
Innovation Solution
A method and device that allow UE to detect D-PDCCH by obtaining and using antenna port configuration information to determine the search space, enabling detection of D-PDCCH in the spatial dimension, thereby improving resource utilization and scheduling flexibility in MU-MIMO.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If D-PDCCH based on MIMO precoding is introduced to improve capacity and performance, then reception performance and resource efficiency are improved, but detection capability becomes insufficient as UE cannot detect D-PDCCH
Solution Approach 1:
The base station performs preliminary action by determining antenna port configuration information and search space for D-PDCCH before transmission. The UE similarly performs preliminary action by obtaining configuration information and determining search space before detection, enabling successful D-PDCCH detection while maintaining precoding benefits
Solution Approach 2:
Antenna port configuration information serves as an intermediary element that bridges the gap between D-PDCCH transmission and detection. By providing this configuration information to UE, the system enables UE to detect D-PDCCH in the spatial dimension, resolving the detection capability issue while preserving reception performance improvements
2Productivity
If D-PDCCH detection is enabled using antenna port configuration, then data transmission capability is ensured, but implementation complexity may increase
Solution Approach 1:
The antenna port configuration mechanism serves multiple functions: it enables D-PDCCH detection, supports MU-MIMO scheduling, and improves resource utilization. By making the detection mechanism universal and applicable to different scenarios, the patent avoids adding dedicated complex detection procedures while ensuring data transmission capability
Solution Approach 2:
The patent changes detection parameters by introducing antenna port configuration information and search space parameters. These parameter changes enable D-PDCCH detection without fundamentally altering the detection mechanism, thus ensuring data transmission capability while controlling implementation complexity through parameter-based configuration rather than structural changes
Data Source
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AI summary
Embodiments of the present invention disclose a method and a device for detecting and transmitting information. The method includes: obtaining, by a UE, at least one type of configuration information of an antenna port occupied by a D-PDCCH, which is configured on a base station side; determining, by the UE, a search space of the D-PDCCH; and detecting, by the UE, the D-PDCCH in the search space according to the antenna port configuration information. With the embodiments of the present invention, the UE can detect the D-PDCCH, and therefore data transmission is ensured. Furthermore, a blind detection of a PDCCH by the UE based on time-frequency resources in an existing system is extended to a spatial dimension, that is, an antenna port, thereby increasing the efficiency of resource utilization, so that the D-PDCCH can be detected in the spatial dimension.