Terminal Capability Indication for Carrier Aggregation DCI Overhead Reduction
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Solution Overview
Problem
In communication technologies, the existing methods for terminal capability indication and scheduling in carrier aggregation lead to excessive DCI overhead and potential information transmission failures due to the complexity of processing control information for multiple objects.
Innovation Solution
A terminal capability indication method and apparatus that allow a terminal to send capability information to a network side device, enabling the terminal to receive scheduling information that meets its processing capabilities for different control information types, thereby optimizing resource allocation and reducing processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If one DCI schedules uplink or downlink data in one cell with flexible resource allocation, then resource allocation flexibility is improved, but DCI overhead increases significantly in carrier aggregation scenarios
Solution Approach 1:
The patent combines scheduling information for multiple cells into a single DCI message. Specifically, one DCI can schedule PDSCH in multiple downlink cells or PUSCH in multiple uplink cells simultaneously, reducing the number of separate DCI messages and thus lowering DCI overhead while maintaining flexible resource allocation across aggregated carriers
Solution Approach 2:
The DCI message is designed to perform multiple scheduling functions simultaneously. A single DCI can allocate resources across multiple cells and for multiple transmission directions (uplink and downlink), making the control information universal and reducing the total quantity of control overhead needed in carrier aggregation scenarios
2Adaptability or versatility
If the terminal processes control information for multiple objects, then scheduling capability is improved, but terminal processing complexity increases
Solution Approach 1:
The patent segments the processing of control information by introducing different DCI formats and scheduling modes. The terminal can be configured to process DCI with different structures and capabilities based on its processing capacity, allowing the system to divide the complex processing task into manageable segments that match terminal capabilities
Solution Approach 2:
The system dynamically adapts the scheduling approach based on terminal capability reporting. Terminals report their processing capabilities to the network, which then dynamically configures appropriate DCI formats and scheduling parameters, allowing the terminal processing complexity to remain within acceptable bounds while maintaining high scheduling capability when supported
Data Source
AI summary
This application discloses a terminal capability indication method and apparatus, a scheduling method and apparatus, a terminal, and a communication device. The terminal capability indication method includes: sending, by a terminal, terminal capability information to a network side device, where the terminal capability information includes a processing capability of the terminal for first control information and/or a processing capability of the terminal for second control information; and receiving, by the terminal, at least two scheduling information, where the at least two scheduling information meet a requirement corresponding to the terminal capability information, and the scheduling information is at least one of the first control information and the second control information, where the first control information corresponds to N objects, and N is greater than or equal to 1; and the second control information corresponds to M objects, and M is greater than or equal to 2.