Techniques for determining beams for full duplex wireless communications
Aspects described herein relate to determining, by a node, to establish a first connection with a first upstream node for receiving downlink communications, and determining, by the node, to establish a second connection with a second upstream node for transmitting uplink communications or establishing a second connection with the same upstream node based on a second transmit/receive beam pair. The first connection can be established with the first upstream node based on a first transmit/receive beam pair. The second connection can be established with the second upstream node (or the same upstream node) based on a second transmit/receive beam pair and concurrently with the first connection is established with the first upstream node.
1 . A method of wireless communication, comprising:
determining, by a node, to establish a first connection with a first upstream node for receiving downlink communications for transmitting to a device;
determining, by the node, based on the first upstream node being unable to receive a transmit beam from the node at at least a threshold signal strength, to establish a second connection with a second upstream node for transmitting uplink communications received from the device, wherein the second upstream node is different from the first upstream node;
establishing the first connection with the first upstream node based on a first transmit/receive beam pair; and
establishing the second connection with the second upstream node based on a second transmit/receive beam pair and concurrently with the first connection established with the first upstream node.
2 . The method of claim 1 , wherein determining to establish the first connection is based on performing beam training and determining that a first beam from the first upstream node is desirable for downlink communications.
3 . The method of claim 2 , wherein determining to establish the second connection is based on performing the beam training and determining that a second beam from the second upstream node is desirable for uplink communications.
4 . The method of claim 3 , wherein determining to establish the first connection or determining to establish the second connection is based on comparing a first signal quality of the first beam to a first threshold or comparing a second signal quality of the second beam to a second threshold.
5 . The method of claim 4 , wherein the first signal quality and the second signal quality correspond to at least one of a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR).
6 . The method of claim 1 , further comprising performing beam training and sending one or more beam reports to a centralized entity indicating signal measurements of multiple beams.
7 . The method of claim 6 , wherein determining to establish the first connection and determining to establish the second connection are based on an indication of the first transmit/receive beam pair or the second transmit/receive beam pair received from the centralized entity based on the one or more beam reports.
8 . The method of claim 1 , wherein the node, the first upstream node, or the second upstream node include at least one of an integrated access and backhaul (IAB) node, a user equipment (UE), a customer premises equipment (CPE), an access point, a relay node, or a repeater.
9 . A method of wireless communication, comprising:
determining, by a first node and based on a first transmit/receive beam pair, to establish a first connection with an upstream node for receiving downlink communications for transmitting to a device;
determining, by the first node and based on the first node being unable to receive a transmit beam from the upstream node at at least a threshold signal strength when using the first transmit/receive beam pair, to establish, using the second transmit/receive beam pair different from the first transmit/receive beam pair, a second connection with the upstream node for transmitting uplink communications received from the device;
establishing the first connection with the upstream node based on the first transmit/receive beam pair; and
establishing the second connection with the upstream node based on the second transmit/receive beam pair concurrently with the first connection established with the upstream node.
10 . The method of claim 9 , wherein determining to establish the first connection is based on performing beam training and determining that a first beam from the upstream node is desirable for downlink communications and determining that a second beam from the upstream node is desirable for uplink communications.
11 . The method of claim 10 , wherein determining to establish the first connection or determining to establish the second connection is based on comparing a first signal quality of the first beam to a first threshold or comparing a second signal quality of the second beam to a second threshold.
12 . The method of claim 11 , wherein the first signal quality and the second signal quality correspond to at least one of a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR).
13 . The method of claim 9 , further comprising performing beam training and sending one or more beam reports to a centralized entity indicating signal measurements of multiple beams.
14 . The method of claim 13 , wherein determining to establish the first connection and determining to establish the second connection are based on an indication of the first transmit/receive beam pair or the second transmit/receive beam pair received from the centralized entity based on the one or more beam reports.
15 . The method of claim 9 , wherein the first node or the upstream node include at least one of an integrated access and backhaul (IAB) node, a user equipment (UE), a customer premises equipment (CPE), an access point, a relay node, or a repeater.
16 . An apparatus for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
determine to establish a first connection with a first upstream node for receiving downlink communications for transmitting to a device;
determine, based on the first upstream node being unable to receive a transmit beam from the apparatus at at least a threshold signal strength, to establish a second connection with a second upstream node for transmitting uplink communications received from the device, wherein the second upstream node is different from the first upstream node;
establish the first connection with the first upstream node based on a first transmit/receive beam pair; and
establish the second connection with the second upstream node based on a second transmit/receive beam pair and concurrently with the first connection established with the first upstream node.
17 . The apparatus of claim 16 , wherein the one or more processors are configured to determine to establish the first connection based on performing beam training and determining that a first beam from the first upstream node is desirable for downlink communications.
18 . The apparatus of claim 17 , wherein the one or more processors are configured to determine to establish the second connection based on performing the beam training and determining that a second beam from the second upstream node is desirable for uplink communications.
19 . The apparatus of claim 18 , wherein the one or more processors are configured to determine to establish the first connection or determine to establish the second connection based on comparing a first signal quality of the first beam to a first threshold or comparing a second signal quality of the second beam to a second threshold.
20 . The apparatus of claim 19 , wherein the first signal quality and the second signal quality correspond to at least one of a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR).
21 . The apparatus of claim 16 , wherein the one or more processors are further configured to perform beam training and send one or more beam reports to a centralized entity indicating signal measurements of multiple beams.
22 . The apparatus of claim 21 , wherein the one or more processors are configured to determine to establish the first connection and determine to establish the second connection based on an indication of the first transmit/receive beam pair or the second transmit/receive beam pair received from the centralized entity based on the one or more beam reports.
23 . The apparatus of claim 16 , wherein the apparatus, the first upstream node, or the second upstream node include at least one of an integrated access and backhaul (IAB) node, a user equipment (UE), a customer premises equipment (CPE), an access point, a relay node, or a repeater.
24 . An apparatus for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
determine to establish, based on a first transmit/receive beam pair, a first connection with an upstream node for receiving downlink communications for transmitting to a device;
determine to establish, based on the first node being unable to receive a transmit beam from the upstream node at at least a threshold signal strength when using the first transmit/receive beam pair, to establish, using the second transmit/receive beam pair different from the first transmit/receive beam pair, a second connection with the upstream node for transmitting uplink communications received from the device;
establish the first connection with the upstream node based on the first transmit/receive beam pair; and
establish the second connection with the upstream node based on the second transmit/receive beam pair concurrently with the first connection established with the upstream node.
25 . The apparatus of claim 24 , wherein the one or more processors are configured to determine to establish the first connection based on performing beam training and determining that a first beam from the upstream node is desirable for downlink communications and determining that a second beam from the upstream node is desirable for uplink communications.
26 . The apparatus of claim 25 , wherein the one or more processors are configured to determine to establish the first connection or determine to establish the second connection based on comparing a first signal quality of the first beam to a first threshold or comparing a second signal quality of the second beam to a second threshold.
27 . The apparatus of claim 26 , wherein the first signal quality and the second signal quality correspond to at least one of a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR).
28 . The apparatus of claim 24 , wherein the one or more processors are further configured to perform beam training and sending one or more beam reports to a centralized entity indicating signal measurements of multiple beams.
29 . The apparatus of claim 28 , wherein the one or more processors are configured to determine to establish the first connection and determine to establish the second connection based on an indication of the first transmit/receive beam pair or the second transmit/receive beam pair received from the centralized entity based on the one or more beam reports.
30 . The apparatus of claim 24 , wherein the apparatus or the upstream node include at least one of an integrated access and backhaul (IAB) node, a user equipment (UE), a customer premises equipment (CPE), an access point, a relay node, or a repeater.