Transmissions to not cause interference
Apparatuses, methods, and systems are disclosed for transmissions to not cause interference. One method includes receiving a first configuration including information of a first reference signal (“RS”). The method includes transmitting the first RS while applying a first spatial filter. The method includes determining whether the first spatial filter is to be used for transmitting a signal to a second wireless node. The method includes receiving a first control message from a third wireless node. The method includes determining, based on the first control message, whether the first spatial filter causes an interference on the third wireless node. The method includes, based on determining that the first spatial filter does not cause the interference on the third wireless node, transmitting the signal to the second wireless node.
1 . A method at a first wireless node comprising a first function and a second function, the method comprising:
receiving a first configuration comprising information of a first reference signal (RS) for the first function;
transmitting, via the first function, the first RS while applying a first spatial filter, wherein the first spatial filter is used for transmitting a signal to a second wireless node connected to the first function;
receiving, via the second function, a first control message from a third wireless node connected to the second function;
determining, based on the first control message, whether applying the first spatial filter causes an interference on the third wireless node; and
based on determining that the first spatial filter does not cause the interference on the third wireless node, transmitting, via the first function, the signal to the second wireless node while applying the first spatial filter.
2 . The method of claim 1 , wherein the first control message comprises an indication of whether the first RS causes the interference on the third wireless node.
3 . The method of claim 1 , wherein:
the first wireless node is an integrated access and backhaul (IAB) node;
the first function is an IAB distributed unit (IAB-DU);
the second function is an IAB mobile terminal (IAB-MT);
the second wireless node is a child node of the first wireless node, a user equipment (UE), or a combination thereof; and
the third wireless node is a parent node of the first wireless node, an integrated access and backhaul donor, or a combination thereof.
4 . The method of claim 1 , wherein:
the first RS is a synchronization signal and physical broadcast channel block (SS/PBCH), a channel state information (CSI) RS (CSI-RS), or a combination thereof; and
the first RS is associated with an integrated access and backhaul distributed unit (IAB-DU) of the first wireless node.
5 . The method of claim 1 , wherein the first control message is a downlink control information (DCI) message, a medium access control (MAC) message, or a combination thereof.
6 . The method of claim 1 , wherein:
the first wireless node is an integrated access and backhaul (IAB) node;
the first function is an IAB mobile terminal (IAB-MT);
the second function is an IAB distributed unit (IAB-DU);
the second wireless node is a parent node of the first wireless node, an IAB donor, or a combination thereof; and
the third wireless node is a child node of the first wireless node, a user equipment (UE), or a combination thereof.
7 . The method of claim 1 , wherein:
the first RS is a sounding reference signal (SRS); and
the first RS is associated with an integrated access and backhaul mobile terminal (IAB-MT) of the first wireless node.
8 . The method of claim 1 , wherein the first control message is a downlink control information (DCI) message, an uplink control information (UCI) message, a medium access control (MAC) message, or a combination thereof.
9 . An apparatus for wireless communication, the apparatus comprising:
a processor; and
a memory coupled to the processor, the memory comprising instructions executable by the processor to cause the apparatus to:
receive a first configuration comprising information of a first reference signal (RS) for a first function of the apparatus;
transmit, via the first function, the first RS while applying a first spatial filter, wherein the first spatial filter is used for transmitting a signal to a second wireless node connected to the first function;
receive, via a second function of the apparatus, a first control message from a third wireless node connected to the second function;
determine, based on the first control message, whether applying the first spatial filter causes an interference on the third wireless node; and
based on determining that the first spatial filter does not cause the interference on the third wireless node, transmit, via the first function, the signal to the second wireless node while applying the first spatial filter.
10 . The apparatus of claim 9 , wherein the first control message comprises an indication of whether the first RS causes the interference on the third wireless node.
11 . The apparatus of claim 9 , wherein:
the first wireless node is an integrated access and backhaul (IAB) node;
the first function is an IAB distributed unit (IAB-DU);
the second function is an IAB mobile terminal (IAB-MT);
the second wireless node is a child node of the first wireless node; and
the third wireless node is a parent node of the first wireless node.
12 . The apparatus of claim 9 , wherein:
the first RS is a synchronization signal and physical broadcast channel block (SS/PBCH), a channel state information (CSI) RS (CSI-RS), or a combination thereof; and
the first RS is associated with an integrated access and backhaul distributed unit (IAB-DU) of the first wireless node.
13 . The apparatus of claim 9 , wherein the first control message is a downlink control information (DCI) message, an uplink control information (UCI) message, a medium access control (MAC) message, or a combination thereof.
14 . The apparatus of claim 9 , wherein:
the first wireless node is an integrated access and backhaul (IAB) node;
the first function is an IAB mobile terminal (IAB-MT);
the second function is an IAB distributed unit (IAB-DU);
the second wireless node is a parent node of the first wireless node; and
the third wireless node is a child node of the first wireless node.
15 . The apparatus of claim 9 , wherein:
the first RS is a sounding reference signal (SRS); and
the first RS is associated with an integrated access and backhaul mobile terminal (IAB-MT) of the first wireless node.
16 . The method of claim 1 , further comprising receiving a second control message from the second wireless node.
17 . The apparatus of claim 9 , wherein the instructions are further executable by the processor to cause the apparatus to receive a second control message from the second wireless node.