SBFD Frequency Resource Scheduling for Downlink Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In subband full duplex (SBFD) communication, uplink signals from other UEs interfere with downlink signals at the user equipment (UE), degrading downlink receiving performance and increasing implementation complexity and costs.
Innovation Solution
The UE reports capability information, including radio frequency indicator, filter, pattern, and scheduling information to the network device, which configures and schedules frequency domain resources for improved downlink reception, using subband filters to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If subband full duplex (SBFD) communication is implemented with simultaneous uplink and downlink transmission, then spectrum utilization is improved, but uplink signals from other UEs cause interference to downlink signals at the UE, degrading downlink receiving performance
Solution Approach 1:
The patent segments the frequency spectrum into multiple subbands, allowing different subbands to be allocated for uplink and downlink transmissions. By dividing the bandwidth into non-overlapping subbands, the system enables simultaneous uplink and downlink communication while preventing interference between directions, thus resolving the contradiction between spectrum utilization and downlink receiving performance.
2Object-affected harmful factors
If the UE uses wider filters to suppress out-of-band interference, then interference suppression capability is improved, but implementation complexity and costs of the UE increase
Solution Approach 1:
The patent applies filtering operations at the receiver side to remove out-of-band interference components before they affect the desired signal. By performing preliminary filtering actions on the received composite signal, the system suppresses interference from other UEs' uplink transmissions without requiring complex hardware modifications, thus resolving the contradiction between interference suppression capability and UE implementation complexity.
Data Source
AI summary
A communication method and a related communication apparatus are provided. In the communication method, in a flexible duplex mode, a terminal device reports, to a network device, information about a communication capability supported by the terminal device, and the network device configures and schedules a corresponding frequency domain resource based on the information about the communication capability, so that the frequency domain resource helps the terminal device receive a downlink signal, thereby improving downlink receiving performance of the terminal device, and avoiding increased design complexity and costs of the terminal device.