Techniques for determining beams for full duplex wireless communications

Patent metadata

Field	Value
Publication number	US-12563582-B2
Application number	US-202017084382-A
Country	US
Kind code	B2
Filing date	Oct 29, 2020
Priority date	Nov 8, 2019
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

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.

First claim

What is claimed is:

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 m

Assignees

• Qualcomm Inc

Inventors

• Raghavan Vasanthan
• Partyka Andrzej
• Li Junyi
• Gulati Kapil
• Ryu Jung Ho
• Bai Tianyang

Classifications

• H04B7/0696

  Determining beam pairs · CPC title

• H04W72/046

  the resource being in the space domain, e.g. beams · CPC title

• H04L5/006

  Quality of the received signal, e.g. BER, SNR, water filling · CPC title

• H04L5/0023

  Time-frequency-space · CPC title

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title