US-12628101-B2 - Scheduling request response monitoring alignment for energy savings

US12628101B2US 12628101 B2US12628101 B2US 12628101B2US-12628101-B2

Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify a synchronization signal block (SSB) timing for receiving SSBs in accordance with periodic SSB transmission occasions. The UE may transmit a scheduling request (SR) requesting an uplink grant for an uplink transmission. The UE may start a timer associated with monitoring for the uplink grant from a network entity based on transmitting the SR, where starting the timer may be delayed with respect to the SR transmission. For example, the UE may start the timer after the SR is transmitted and at a first time that satisfies a first threshold duration prior to a first SSB transmission occasion of the periodic SSB transmission occasions. In some cases, the UE may start the timer based on the SR being transmitted at a time that satisfies a second threshold duration after an SSB transmission occasion.

Inventors

Marwen Zorgui
Ahmed Attia ABOTABL
Ahmed Elshafie

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260512
Application Date: 20230106

Claims (20)

1 . An apparatus for wireless communication at a user equipment (UE), comprising: a processor; and a memory coupled with the processor, with instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to: identify a synchronization signal block timing for receiving one or more synchronization signal blocks from a network entity in accordance with periodic synchronization signal block transmission occasions; transmit, to the network entity, a first scheduling request that requests an uplink grant for an uplink transmission by the UE; start a timer associated with monitoring for the uplink grant from the network entity based at least in part on transmitting the first scheduling request, wherein the timer is started after the first scheduling request is transmitted and at a first time satisfying a first threshold duration prior to a first synchronization signal block transmission occasion of the periodic synchronization signal block transmission occasions; monitor for the uplink grant for a duration of the timer based at least in part on starting the timer; and transmit the uplink transmission based at least in part on receiving the uplink grant during the duration of the timer.
2 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: determine that the first scheduling request is transmitted at a second time that satisfies a second threshold duration after a second synchronization signal block transmission occasion of the periodic synchronization signal block transmission occasions, the second synchronization signal block transmission occasion preceding the first synchronization signal block transmission occasion, wherein the timer is started based at least in part on transmitting the first scheduling request at the second time.
3 . The apparatus of claim 2 , wherein the instructions are further executable by the processor to cause the apparatus to: select a first value for the first threshold duration or a second value for the second threshold duration, or both, based at least in part on a quantity of one or more logical channels for which data is available for transmission by the UE.
4 . The apparatus of claim 3 , wherein the instructions are further executable by the processor to cause the apparatus to: receive a first control message indicating a configuration of the first value or the second value, or both, wherein selecting the first value or the second value, or both, is based at least in part on the configuration.
5 . The apparatus of claim 4 , wherein the instructions are further executable by the processor to cause the apparatus to: receive a second control message indicating whether the UE is to select the first value, the second value, or both based at least in part on the quantity of the one or more logical channels, wherein selecting the first value or the second value, or both, is based at least in part on the second control message.
6 . The apparatus of claim 5 , wherein the second control message comprises a radio resource control message, a medium access control-control element, or downlink control information.
7 . The apparatus of claim 2 , wherein the instructions are further executable by the processor to cause the apparatus to: receive a message comprising an indication of the first threshold duration, the second threshold duration, or both, wherein the timer is started based at least in part on the indication.
8 . The apparatus of claim 7 , wherein the message comprises a radio resource control message, a system information message, downlink control information, or a medium access control message, or any combination thereof.
9 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: receive a scheduling request configuration that includes a field indicating whether the timer is to be started at a time that satisfies the first threshold duration prior to a synchronization signal block transmission occasion of the periodic synchronization signal block transmission occasions, wherein starting the timer is based at least in part on the field of the scheduling request configuration.
10 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: transmit a request associated with starting the timer prior to the first synchronization signal block transmission occasion; and receive, in response to the request, a message indicating that the timer is to be started at the first time based at least in part on the request.
11 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: transmit a second scheduling request based at least in part on failing to receive the uplink grant during the duration of the timer.
12 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: enter a sleep mode after transmitting the first scheduling request; and exit the sleep mode prior to starting the timer.
13 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: refrain from transmitting one or more additional scheduling requests until the timer expires.
14 . An apparatus for wireless communication, comprising: a processor; and a memory coupled with the processor, with instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to: identify a synchronization signal block timing for transmitting one or more synchronization signal blocks to a user equipment (UE) in accordance with periodic synchronization signal block transmission occasions; receive, from the UE, a scheduling request that requests an uplink grant for an uplink transmission by the UE; transmit, to the UE and based at least in part on receiving the scheduling request, the uplink grant during a duration of a timer, wherein the timer is started at a first time satisfying a first threshold duration prior to a start of a first synchronization signal block transmission occasion of the periodic synchronization signal block transmission occasions; and receive, from the UE, the uplink transmission based at least in part on transmitting the uplink grant during the duration of the timer.
15 . The apparatus of claim 14 , wherein the scheduling request is received at a second time that satisfies a second threshold duration after a second synchronization signal block transmission occasion of the periodic synchronization signal block transmission occasions, the second synchronization signal block transmission occasion preceding the first synchronization signal block transmission occasion.
16 . The apparatus of claim 15 , wherein the instructions are further executable by the processor to cause the apparatus to: transmit, to the UE, a first control message indicating a configuration associated with selecting a first value for the first threshold duration, a second value for the second threshold duration, or both, based at least in part on a quantity of one or more logical channels for which data is available for transmission by the UE.
17 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to: transmit, to the UE, a second control message indicating whether the UE is to select the first value, the second value, or both based at least in part on the quantity of one or more logical channels.
18 . The apparatus of claim 17 , wherein the second control message comprises a radio resource control message, a medium access control-control element, or downlink control information.
19 . The apparatus of claim 15 , wherein the instructions are further executable by the processor to cause the apparatus to: transmit a message comprising an indication of the first threshold duration, the second threshold duration, or both, wherein the timer is started based at least in part on the indication.
20 . The apparatus of claim 19 , wherein the message comprises a radio resource control message, a system information message, downlink control information, or a medium access control message, or any combination thereof.

Description

FIELD OF TECHNOLOGY The following relates to wireless communication, including scheduling request response monitoring alignment for energy savings. 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, each supporting wireless communication for communication devices, which may be known as user equipment (UE). SUMMARY The described techniques relate to improved methods, systems, devices, and apparatuses that support scheduling request (SR) response monitoring alignment for energy savings. For example, the described techniques provide for a user equipment (UE) to identify a synchronization signal block (SSB) timing for receiving SSBs from a network entity in accordance with periodic SSB transmission occasions. The UE may transmit an SR requesting an uplink grant for an uplink transmission by the UE. The UE may start a timer associated with monitoring for the uplink grant from the network entity based on transmitting the SR, and the timer may be started after transmitting the SR and some duration prior to an SSB transmission occasion. For example, the timer may be started at a first time that satisfies a first threshold duration prior to a first SSB transmission occasion of the periodic SSB transmission occasions. In some cases, the UE may start the timer based on the SR being transmitted at a second time that satisfies a second threshold duration after a second SSB transmission occasion, where the second SSB transmission occasion is prior to the SR and the first SSB transmission occasion. An apparatus for wireless communication at a UE is described. The apparatus may include a processor and a memory coupled with the processor, with instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to identify an SSB timing for receiving one or more SSBs from a network entity in accordance with periodic SSB transmission occasions, transmit, to the network entity, a first SR that requests an uplink grant for an uplink transmission by the UE, and start a timer associated with monitoring for the uplink grant from the network entity based on transmitting the first SR, where the timer is started after the first SR is transmitted and at a first time satisfying a first threshold duration prior to a first SSB transmission occasion of the periodic SSB transmission occasions. A method for wireless communication at a UE is described. The method may include identifying an SSB timing for receiving one or more SSBs from a network entity in accordance with periodic SSB transmission occasions, transmitting, to the network entity, a first SR that requests an uplink grant for an uplink transmission by the UE, and starting a timer associated with monitoring for the uplink grant from the network entity based on transmitting the first SR, where the timer is started after the first SR is transmitted and at a first time satisfying a first threshold duration prior to a first SSB transmission occasion of the periodic SSB transmission occasions. Another apparatus for wireless communication at a UE is described. The apparatus may include means for identifying an SSB timing for receiving one or more SSBs from a network entity in accordance with periodic SSB transmission occasions, means for transmitting, to the network entity, a first SR that requests an uplink grant for an uplink transmission by the UE, and means for starting a timer associated with monitoring for the uplink grant from the network entity based on transmitting the first SR, where the timer is started after the first SR is transmitted and at a first time satisfying a first threshold duration prior to a first SSB transmission occasion of the periodic SSB transmission occasions. A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to identify an SSB timing for receiving one or more SSBs from a network entity in accordance with periodic SSB transmission occasions, transmit, to the network entity, a first SR that requests an up