Cross-Carrier Control Information Scheduling for Resource Conflict Resolution
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Solution Overview
Problem
In coordinated multipoint transmission/reception systems, terminal devices face challenges in accurately obtaining control information from multiple transmission points due to resource conflicts when control information is sent on the same carrier, affecting network performance.
Innovation Solution
The method involves sending control information for scheduling data on different carriers, allowing terminal devices to accurately receive each piece of control information by configuring enhanced cross-carrier scheduling, thereby resolving resource conflicts and improving network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control information from multiple transmission points is sent on the same carrier, then the terminal device can receive control information simultaneously, but resource conflicts occur and the terminal device cannot accurately obtain control information
Solution Approach 1:
The patent segments the control information transmission by assigning different transmission points to different carriers. Specifically, the first transmission point sends control information on the first carrier while the second transmission point sends control information on the second carrier, thereby avoiding resource conflicts and enabling accurate reception at the terminal device
Solution Approach 2:
The patent introduces a new dimension for resource allocation by using multiple carriers (frequency dimension) instead of relying solely on time or spatial separation. This dimensional expansion allows simultaneous transmission of control information from multiple transmission points without interference
Data Source
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AI summary
This application provides a control information transmission method and a device. The method includes: sending, by a first network device, configuration information to a terminal device, where the configuration information is used to instruct the terminal device to detect first control information on a first carrier and detect second control information on a second carrier, and both the first control information and the second control information are control information for scheduling data on the second carrier; and sending, by the first network device, at least one of the first control information and the second control information. Therefore, in this application, the network device sends the configuration information, and for data scheduling on one carrier, the terminal device detects both a cross-carrier scheduling cell and a same-carrier scheduling cell. In this way, a prior-art problem that only control information on the data scheduling carrier is detected is resolved, and a conflict between resources for a plurality of pieces of control information of a same terminal device is avoided, so that the terminal device can accurately obtain control information sent by each transmission point, thereby improving network performance.