User Equipment Coordination for Cross-Link Interference Cancellation

The patent converts the harmful cross-link interference into a useful signal by having the interfering UE transmit its uplink signal (including I/Q samples) that can be used by the victim UE to reconstruct and cancel the interference. The harmful interference signal is transformed into a beneficial reference signal for interference cancellation, allowing the system to maintain high resource utilization while eliminating the negative effects of cross-link interference.

The patent implements preliminary action by having the interfering UE transmit its uplink signal and I/Q samples before the victim UE receives the downlink signal. This advance transmission of interference information allows the victim UE to pre-model and prepare the interference cancellation process, ensuring that when the downlink signal is received, the interference can be immediately canceled without degradation in link quality.

The patent applies universality by making the UE capable of performing multiple functions: it acts as both a transmitter of uplink signals and a provider of interference information, while simultaneously serving as a receiver of downlink signals and a processor of interference cancellation. The UE's transceiver and processor are designed to handle multiple roles, reducing the need for separate dedicated components for interference management and improving overall system efficiency.

The patent implements self-service by enabling each UE to autonomously manage its own interference characteristics. The interfering UE automatically transmits its uplink signal and I/Q samples without requiring external coordination, and the victim UE independently processes this information to cancel interference. This self-service approach reduces signaling overhead and simplifies network coordination while maintaining high receiver performance.