Small Cell Full-Duplex Configuration via Base Station Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communications systems face resource waste and communication inefficiencies due to the need for an additional physical control channel on the backhaul link of small cells to avoid interference, which limits the implementation of full-duplex communication on the same carrier.
Innovation Solution
A base station and small cell configuration method that determines a configuration mode based on full-duplex capability support information, allowing the small cell to use the same physical layer resource for simultaneous reception and transmission, optimizing resource usage by selecting between different modes that balance resource allocation and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is implemented on the same carrier, then resource utilization is improved, but self-interference from transmit link to receive link worsens
Solution Approach 1:
The patent implements dynamic configuration of full-duplex operation modes through signaling between base station and small cell. The system can dynamically switch between different operational states (full-duplex, half-duplex, idle) based on traffic conditions and interference levels, allowing adaptive optimization of resource utilization while managing self-interference through real-time mode adjustment
Solution Approach 2:
The patent changes operational parameters (duplex mode, resource allocation, power levels) to resolve the contradiction. By modifying the operational state from static to dynamic parameter adjustment, the system can achieve high resource utilization during favorable conditions while maintaining acceptable interference levels through parameter optimization
2Reliability
If an additional physical control channel is used on the backhaul link, then control information transmission is ensured, but resource waste increases
Solution Approach 1:
The patent merges the control channel functionality with existing data transmission resources. Instead of allocating separate dedicated resources for control channels, the system combines control information transmission with data transmission on the backhaul link, eliminating resource waste while ensuring reliable control information delivery through integrated resource usage
Solution Approach 2:
The patent makes existing backhaul link resources multi-functional by enabling them to carry both data and control information simultaneously. This universal resource usage eliminates the need for additional dedicated control channels, reducing resource waste while maintaining reliable control information transmission through shared resource allocation
Data Source
AI summary
The present invention relates to a base station, a small cell, and a control channel configuration method to resolve resource waste caused when an additional physical control channel is used on a backhaul link of a small cell to transmit control information. In a base station provided by an embodiment of the present invention, a transceiver module is configured to receive full-duplex capability support information transmitted by a small cell, where the full-duplex capability support information is used to indicate whether the small cell supports use of a same physical layer resource for simultaneous reception on a backhaul link and transmission on an access link; and a processing module is configured to determine a configuration mode of the backhaul link between the base station and the small cell and the access link of the small cell according to the full-duplex capability support information received by the transceiver module.