System and method for interference cancellation using terminal cooperation

摘要

Soft information for achieving interference cancellation in downlink transmissions can be communicated over device-to-device (D2D) links, thereby allowing paired user equipments (UEs) to receive downlink transmissions over the same radio resources. More specifically, paired UEs that receive transmissions over the same time-frequency resources may exchange soft or hard information over D2D links in order to facilitate interference cancellation. The D2D links may be unidirectional or bidirectional, and may be established over in-band or out-of-band resources. Paired UEs may be in the same or different cells, and may receive their respective transmissions from the same or different transmit point. UEs may be paired with one another based on various criteria, e.g., interference cancellation capabilities, scheduling metrics, etc.

主权项

1. A method for interference cancellation in a wireless network, the method comprising:
receiving, by a first user equipment (UE), a signal carrying a first downlink transmission and a second downlink transmission, the first downlink transmission being communicated over the same radio resources as the second downlink transmission; receiving, by the first UE, information corresponding to the second downlink transmission over a device to device (D2D) link after receiving the signal carrying the first downlink transmission, the D2D link extending between the first UE and a second UE; and using the information received over the D2D link to decode the first downlink transmission in accordance with an interference cancellation technique.