Full duplex device-to-device cooperative communication
View Patent ↗Examples described herein include apparatuses and methods for full duplex device-to-device cooperative communication. Example systems described herein may include self-interference noise calculators. The output of a self-interference noise calculator may be used to compensate for the interference experienced due to signals transmitted by another antenna of the same wireless device or system. In implementing such a self-interference noise calculator, a selected wireless relaying device or wireless destination device may operate in a full-duplex mode, such that relayed messages may be transmitted as well as information from other sources or destinations during a common time period (e.g., symbol, slot, subframe, etc.).
1. A method, comprising:
transmitting, from a first set of antennas of a first device to a second device and a third device, a first message on a carrier during a first time period;
generating a self-interference noise signal at the first device based at least in part on the first message;
receiving, from the second device at a second set of antennas of the first device, a first part of a second message on the carrier during a first portion of the first time period, wherein the first part of the second message comprises a first part of a message from a fourth device and the first part of the second message is received based at least in part on the self-interference noise signal; and
receiving, from the third device at the second set of antennas of the first device, a second part of the second message on the carrier during a second portion of the first time period, wherein the second part of the second message comprises a second part of the message from the fourth device and is received based at least in part on the self-interference noise signal.
2. The method of claim 1 , further comprising receiving a third message on the carrier during a second time period that is before the first time period, wherein the first message is transmitted in response to the third message.
3. The method of claim 2 , wherein the first message comprises an acknowledgement (ACK) or a negative acknowledgment (NACK) for the third message.
4. The method of claim 1 , wherein transmitting the first message comprises transmitting the first message on a sidelink to the second device.
5. The method of claim 1 , wherein receiving second message comprises receiving the second message on a sidelink from the second device.
6. The method of claim 1 , wherein the first device comprises first user equipment (UE), the second device comprises second UE, and the third device comprises third UE.
7. The method of claim 6 , wherein the first UE, the second UE, and the third UE comprise a same category of UE.
8. The method of claim 6 , wherein the fourth device comprises a third UE.
9. The method of claim 1 , wherein the third device comprises a base station.
10. The method of claim 1 , wherein the second device and the third device each comprise a respective relay node.