US-12627337-B2 - Techniques for network-initiated panel activation or deactivation at a user equipment (UE)

US12627337B2US 12627337 B2US12627337 B2US 12627337B2US-12627337-B2

Abstract

Methods, systems, and devices for wireless communications are described. In some example, a base station may facilitate panel activation or deactivation at a user equipment (UE). For example, a UE including a set of panels may establish a connection with a base station. The base station may transmit an activation configuration message activating or deactivating a subset of panels at the UE. Based on the activation configuration message, the UE may select one or more panels from the set of panels and transmit an uplink transmission to the base station using the selected one or more panels.

Inventors

Fang Yuan
Yan Zhou
Tao Luo

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260512
Application Date: 20210128

Claims (14)

1 . A method for wireless communication at a user equipment (UE), comprising: establishing a connection between a network device and the UE, the UE having a plurality of panels for wireless communications; receiving, from the network device, via a first bandwidth part, a first activation configuration message comprising a codepoint corresponding to two or more panels of the plurality of panels; selecting a first subset of the plurality of panels for an uplink transmission based at least in part on the codepoint mapped to the two or more panels of the plurality of panels; transmitting, to the network device, the uplink transmission via the first bandwidth part using the first subset of the plurality of panels; switching from communicating with the network device via the first bandwidth part to communicating with the network device via a second bandwidth part; suspending the first activation configuration message while switching to communicating with the network device via the second bandwidth part; receiving a second activation configuration message to activate or deactivate one or more second panels of the plurality of panels, wherein the second activation configuration message is received over the second bandwidth part; selecting a second subset of the plurality of panels for a second uplink transmission using the second bandwidth part based at least in part on the second activation configuration message; switching from communicating with the network device via the second bandwidth part to communicating with the network device via the first bandwidth part; and reselecting the first subset of the plurality of panels in accordance with switching back to communicating with the network device via the first bandwidth part and the first activation configuration message.
2 . The method of claim 1 , wherein receiving the first activation configuration message comprises: receiving a control message comprising a single bit field for the two or more panels, wherein the bit field comprises one of a bit for activating the two or more panels or a bit for deactivating the two or more panels.
3 . The method of claim 1 , further comprising: receiving, before receiving the first activation configuration message, a radio resource control message indicating a mapping between each codepoint of a set of codepoints and one or more panels of the plurality of panels, wherein the first activation configuration message is received via downlink control information, and the codepoint is from the set of codepoints.
4 . The method of claim 1 , further comprising: deactivating the two or more panels based at least in part on the second activation configuration message.
5 . The method of claim 1 , further comprising: receiving a control message indicating a set of component carriers of a group of serving cells configured for the UE, wherein the first activation configuration message comprises a message to activate or deactivate the two or more panels when communicating using a component carrier of the set of component carriers; and communicating with the network device using the component carrier of the set of component carriers and the first subset of the plurality of panels of the plurality of panels based at least in part on the first activation configuration message.
6 . The method of claim 1 , wherein the first activation configuration message comprises a radio resource control (RRC) message, a medium access control control element (MAC-CE), or a downlink control information (DCI) message.
7 . A method for wireless communication at a network device comprising: establishing a connection between the network device and a user equipment (UE), the UE having a plurality of panels for wireless communications; transmitting, to the UE, via a first bandwidth part, a first activation configuration message comprising a codepoint mapped to two or more panels of the plurality of panels; receiving, from the UE, an uplink transmission via the first bandwidth part in accordance with the codepoint mapped to the two or more panels of the plurality of panels; switching from communicating with the UE via the first bandwidth part to communicating with the UE via a second bandwidth part; suspending the first activation configuration message while switching to communicating with the UE via the second bandwidth part; transmitting, via a second bandwidth part, a second activation configuration message to activate or deactivate one or more second panels of the plurality of panels; communicating, with the UE, via the second bandwidth part in accordance with the second activation configuration message; switching from communicating with the UE via the second bandwidth part to communicating with the UE using the first bandwidth part; and communicating with the UE in accordance with the switching back to the first bandwidth part and the first activation configuration message.
8 . The method of claim 7 , wherein transmitting the first activation configuration message comprises: transmitting a control message comprising a single bit field for the two or more panels, wherein the single bit field comprising one of a bit for activating the two or more panels or a bit for deactivating the two or more panels.
9 . The method of claim 7 , further comprising: transmitting, before transmitting the first activation configuration message, a radio resource control message indicating a mapping between each codepoint of a set of codepoints and one or more panels of the plurality of panels, wherein the first activation configuration message is received via downlink control information, and the codepoint is from the set of codepoints.
10 . The method of claim 7 , wherein the second activation configuration message indicates to activate two or more second panels different from the two or more panels.
11 . The method of claim 7 , further comprising: transmitting a control message indicating a set of component carriers of a group of serving cells configured for the UE, wherein the first activation configuration message comprises a message to activate or deactivate the two or more panels when communicating with the network device using a component carrier of the set of component carriers; and communicating with the UE using the component carrier of the set of component carriers in accordance with the first activation configuration message.
12 . The method of claim 7 , wherein the first activation configuration message comprises a radio resource control (RRC) message, a medium access control control element (MAC-CE), or a downlink control information (DCI) message.
13 . An apparatus for wireless communication at a user equipment (UE), comprising: one or more processors; and one or more memories coupled with the one or more processors storing instructions executable by the one or more processors to cause the apparatus to: establish a connection between a network device and the UE, the UE having a plurality of panels for wireless communications; receive, from the network device, via a first bandwidth part, a first activation configuration message to activate or deactivate one or more panels of the plurality of panels; select a first subset of the plurality of panels for an uplink transmission based at least in part on the first activation configuration message; and transmit, to the network device, the uplink transmission via the first bandwidth part using the first subset of the plurality of panels; switch from communications with the network device via the first bandwidth part to communications with the network device via a second bandwidth part; suspend the first activation configuration message while switching to communicating with the network device via the second bandwidth part; receive a second activation configuration message to activate or deactivate one or more second panels of the plurality of panels, wherein the second activation configuration message is received over the second bandwidth part; select a second subset of the plurality of panels for a second uplink transmission using the second bandwidth part based at least in part on the second activation configuration message; switch from communications with the network device via the second bandwidth part to communications with the network device via the first bandwidth part; and reselect the first subset of the plurality of panels in accordance with switching back to communications with the network device via the first bandwidth part and the first activation configuration message.
14 . An apparatus for wireless communications at a network device, comprising: one or more processors; and one or more memories coupled with the one or more processors storing instructions executable by the one or more processors to cause the apparatus to: establish a connection between the network device and a user equipment (UE), the UE having a plurality of panels for wireless communications; transmit, to the UE, via a first bandwidth part, a first activation configuration message comprising a codepoint mapped to two or more panels of the plurality of panels; and receive, from the UE, an uplink transmission via the first bandwidth part in accordance with the codepoint mapped to the two or more panels of the plurality of panels; switch from communicating with the UE via the first bandwidth part to communicating with the UE via a second bandwidth part; suspend the first activation configuration message while switching to communicating with the UE via the second bandwidth part; transmit, via the second bandwidth part, a second activation configuration message to activate or deactivate one or more second panels of the plurality of panels; communicate, with the UE, via the second bandwidth part in accordance with the second activation configuration message; switch from communicating with the UE via the second bandwidth part to communicating with the UE using the first bandwidth part; and communicate with the UE in accordance with the switching back to the first bandwidth part and the first activation configuration message.

Description

CROSS REFERENCE The present application is a 371 national stage filing of International PCT Application No. PCT/CN2021/074103 by Yuan et al. entitled “TECHNIQUES FOR NETWORK-INITIATED PANEL ACTIVATION OR DEACTIVATION AT A USER EQUIPMENT (UE),” filed Jan. 28, 2021, which is assigned to the assignee hereof, and which is expressly incorporated by reference in its entirety herein. FIELD OF TECHNOLOGY The following relates to wireless communications, including techniques for network-initiated panel activation or deactivation at a user equipment (UE). BACKGROUND Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE). In some examples, a UE may communicate with a base station using a set of panels. For example, the UE may activate one or more panels of the set and transmit uplink transmissions to the base station using the one or more activated panels. In some examples, the UE may autonomously select which panels of the set to activate or deactivate, which may result in increased UE complexity. SUMMARY The described techniques relate to improved methods, systems, devices, and apparatuses that support techniques for network-initiated panel activation or deactivation at a user equipment (UE). Generally, the described techniques provide for a base station to instruct a UE to activate or deactivate a subset of panels for one or more uplink transmissions. For example, the base station may transmit an activation configuration message to the UE indicating one or more panels for which the UE may activate or deactivate. In response to the activation configuration message, the UE may activate or deactivate the indicated panels and select a panel for one or more uplink transmission to the base station based on the activation configuration message. A method for wireless communication at a UE is described. The method may include establishing a connection between a base station and the UE, the UE having a set of multiple panels for wireless communications, receiving, from the base station, an activation configuration message to activate or deactivate one or more panels of the set of multiple panels, selecting a subset of the set of multiple panels for an uplink transmission based on the activation configuration message, and transmitting, to the base station, the uplink transmission using the selected subset of the set of multiple panels. An apparatus for wireless communication at a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to establish a connection between a base station and the UE, the UE having a set of multiple panels for wireless communications, receive, from the base station, an activation configuration message to activate or deactivate one or more panels of the set of multiple panels, select a subset of the set of multiple panels for an uplink transmission based on the activation configuration message, and transmit, to the base station, the uplink transmission using the selected subset of the set of multiple panels. Another apparatus for wireless communication at a UE is described. The apparatus may include means for establishing a connection between a base station and the UE, the UE having a set of multiple panels for wireless communications, means for receiving, from the base station, an activation configuration message to activate or deactivate one or more panels of the set of multiple panels, means for selecting a subset of the set of multiple panels for an uplink transmission based on the activation configuration message, and means for transmitting, to the base station, the uplink transmission using the selected subset of the set of multiple panels. A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a proce