Base Station Full-Duplex Configuration for User Terminals
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Solution Overview
Problem
The implementation of full-duplex technology in cellular networks is hindered by the large size and increased complexity and power consumption of full-duplex devices, making it difficult to apply in user terminals.
Innovation Solution
A communication control method and apparatus that allows for the activation of a secondary transmission configuration in user terminals based on interference parameters, enabling full-duplex operation while minimizing changes to the terminal devices, by using a base station to configure and manage the secondary configuration and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex technology is implemented in user terminals, then simultaneous uplink and downlink transmission capability is improved, but device size and implementation complexity increase significantly
Solution Approach 1:
The system divides full-duplex functionality into two segments: the base station implements the complex full-duplex transceiver with self-interference cancellation, while user terminals use simpler half-duplex operation. This segmentation allows full-duplex capability in the network without requiring complex full-duplex devices at user terminals.
Solution Approach 2:
The base station acts as an intermediary that manages the full-duplex communication. It configures secondary uplink-downlink configurations for specific user terminals and coordinates interference management, allowing user terminals to achieve full-duplex-like performance through network assistance rather than self-contained full-duplex hardware.
2Productivity
If full-duplex technology is implemented in user terminals, then spectrum utilization efficiency is improved, but power consumption increases
Solution Approach 1:
The system segments the power-consuming full-duplex operation to occur primarily at the base station rather than at power-constrained user terminals. The base station handles the energy-intensive self-interference cancellation and simultaneous transmission/reception, while user terminals consume less power by operating in half-duplex mode with network-coordinated resource allocation.
Solution Approach 2:
The base station serves as an intermediary that manages power consumption by controlling when and how user terminals transmit and receive. Through secondary configuration and interference coordination, the base station enables efficient spectrum usage without requiring user terminals to sustain high power consumption for continuous full-duplex operation.
3Productivity
If secondary transmission configuration is activated for all user terminals, then system capacity is improved, but interference management complexity increases
Solution Approach 1:
The system applies secondary uplink-downlink configurations locally to specific user terminals based on their channel conditions, location, and interference environment rather than uniformly to all terminals. This localized approach enables the base station to activate full-duplex modes only where beneficial, improving system capacity while managing interference complexity through targeted configuration.
Solution Approach 2:
The secondary transmission configuration is dynamically activated or deactivated for different user terminals based on real-time network conditions, interference levels, and traffic demands. This dynamic approach allows the system to optimize capacity by enabling full-duplex where conditions permit while avoiding excessive interference management complexity in scenarios where it would be problematic.
Data Source
AI summary
A communication control method and a related apparatus are disclosed. A communication control method includes transmitting, by a base station, a configuration message to N user terminals in a cell, where the configuration message carries a secondary configuration indication, and the secondary configuration indication is used to indicate a secondary transmission configuration configured by the base station for the N user terminals, where the secondary transmission configuration of the N user terminals is different from a primary transmission configuration of M user terminals in the cell. The method also includes obtaining, by the base station, interference parameters about interference that the N user terminals receive from neighboring user terminals in a full-duplex subframe, and activating the secondary transmission configuration for K user terminals in the N user terminals by using an activation message.