US Patent No. 10,368,357

MITIGATING UL-TO-DL INTERFERENCE


Patent No. 10,368,357
Issue Date July 30, 2019
Title Mitigating Ul-to-dl Interference
Inventorship David Lopez-Perez, Blanchardstown (IE)
Holger Claussen, Blanchardstown (IE)
Assignee Alcatel Lucent, Nozay (FR)

Claim of US Patent No. 10,368,357

1. A method, in a heterogeneous telecommunications network, for mitigating uplink-downlink (UL-DL) interference between a first user equipment (UE), which communicates using a first frequency resource in an uplink (UL) to a first node that transmits and receives using shared frequency resources simultaneously so as to provide full-duplex communication, the first UE forming one half of a first pair of UEs, the other UE of the first pair communicating using the first frequency resource in a downlink (DL) with the first node while the first UE communicates in the uplink using the first frequency resource, and a second UE that receives downlink communications from a second node that transmits and receives using shared frequency resources simultaneously so as to provide full-duplex communication, the method including:receiving, at the second node, an indication of actual or potential UL-DL interference generated by the first UE;
scheduling a second pair of UEs, that includes the second UE, for full-duplex UL-DL communication with the second node, the UEs of the second pair sending and receiving data in an uplink and downlink with the second node simultaneously, in which DL transmissions to the second UE from the second node use a second frequency resource different from the first frequency resource or in which scheduling is avoided for DL connections to the second UE that fall below a quality of service threshold determined using channel quality measurements obtained by the second UE for the first and second frequency resources.