Terminal Distributed MIMO Control via Segmented Downlink Information
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Solution Overview
Problem
Current communication systems, particularly in next-generation mobile networks using distributed MIMO technology based on millimeter waves, face challenges in controlling user equipment (UE) communication effectively, leading to suppressed throughput due to insufficient studies on controlling UEs in distributed MIMO environments.
Innovation Solution
A terminal and radio communication method that includes a receiving section for downlink control information and a control section assuming independent scheduling of data for each antenna group, allowing for appropriate communication in distributed MIMO scenarios by configuring separate TCI states and associations between antenna points and groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If distributed MIMO technology is employed to expand area coverage, then coverage area is improved, but control of user equipment becomes insufficient leading to suppressed throughput
Solution Approach 1:
The patent segments the downlink control information into multiple pieces transmitted through different antenna groups. Each antenna group transmits a separate piece of DCI, allowing the UE to receive comprehensive scheduling information from multiple distributed antenna groups, thereby maintaining control effectiveness while expanding coverage area.
2Area of stationary object
If distributed MIMO technology is employed, then area coverage is expanded, but communication throughput increases insufficiently due to lack of control clarification
Solution Approach 1:
The patent divides DCI transmission across multiple antenna groups, with each group transmitting a segment of the control information. This segmentation enables the system to cover larger areas while maintaining adequate control signaling for throughput optimization.
Solution Approach 2:
The patent combines multiple pieces of DCI from different antenna groups to form complete scheduling information for the UE. By merging the segmented control information, the system achieves both wide coverage and high throughput performance.
3Reliability
If multiple antenna groups transmit identical downlink control information, then control reliability is improved, but resource utilization efficiency decreases
Solution Approach 1:
Instead of transmitting identical DCI copies from all antenna groups, the patent segments the DCI into multiple pieces distributed across different antenna groups. This approach maintains control reliability through diversity while improving resource utilization by avoiding redundant transmissions.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives, from one or more antenna groups, at least one of a plurality of pieces of downlink control information for scheduling a plurality of data with an identical content, and a control section that assumes that each of the plurality of data has been scheduled independently for each of the antenna groups. According to one aspect of the present disclosure, communication can be appropriately implemented even in a case where distributed MIMO technology is employed.