Wakeup grouping for discontinuous reception operation

Methods, systems, and devices for wireless communications are described. Some wireless communications systems (e.g., millimeter wave (mmW) systems) may support user equipment (UEs) operating in a discontinuous reception (DRX) mode. A UE, in these wireless communications systems, may receive signaling configuring the UE with a set of wakeup grouping sets. Each of the set of wakeup grouping sets may identify a set of groups of one or more UEs. The UE may subsequently receive a wakeup signal during a monitoring occasion for wakeup signals, and determine that the received wakeup signal indicates a group in a wakeup grouping set of the set of wakeup grouping sets that includes the UE. In response, the UE may initiate a wakeup procedure.

BACKGROUND

The following relates generally to wireless communications, and more specifically to wakeup grouping for discontinuous reception (DRX) operation.

A wireless multiple access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as a user equipment (UE). Some wireless communications systems may support UEs operating in a DRX mode. UEs in a DRX mode may transition between a sleep state for power conservation and an active state for data transmission and reception (during an on duration) according to a wakeup signal. Conventional techniques for processing wakeup signals in a DRX mode are deficient.

SUMMARY

In a wireless communications system where there is a traffic imbalance among user equipments (UEs), using standing UE-specific and group-specific wakeup signal configurations, some or all UEs may experience a power penalty due to the UEs waking up unnecessarily. The described techniques relate to improved methods, systems, devices, and apparatuses that support wakeup grouping for discontinuous reception (DRX) operation. Generally, the described techniques address the shortcomings of standing UE-specific and group-specific wakeup signal configurations by configuring the UEs with a set of wakeup grouping sets. Each wakeup grouping set may identify a set of groups of one or more UEs, and for each wakeup grouping set, the UEs may be a member of at least one group of each of the wakeup grouping sets. Configuring different wakeup grouping sets may allow a scheduling base station to more efficiently and flexibly schedule and group UEs to reduce unnecessary wakeups of UEs for which no transmissions are scheduled. In some examples, the set of wakeup grouping sets may follow a hopping pattern to further reduce occurrences of false wakeups for UEs. By configuring different wakeup grouping sets, the power penalty of false wakeups may be reduced by sharing the power penalty across the UEs. In this way, the use of wakeup grouping sets described herein may efficiently use resources to support wakeup procedures for multiple UEs with minimal power penalties to the UEs.

A method of wireless communication at a UE is described. The method may include receiving signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, receiving a wakeup signal during a monitoring occasion for wakeup signals, determining that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the UE, and initiating a wakeup procedure for the UE based on the determining.

An apparatus for wireless communication is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive signaling configuring the apparatus with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more apparatuses, receive a wakeup signal during a monitoring occasion for wakeup signals, determine that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the apparatus, and initiate a wakeup procedure for the apparatus based on the determining.

Another apparatus for wireless communication is described. The apparatus may include means for receiving signaling configuring the apparatus with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more apparatuses, receiving a wakeup signal during a monitoring occasion for wakeup signals, determining that the received wakeup signal indicates a group of a wakeup grouping set of the set of wakeup grouping sets that includes the apparatus, and initiating a wakeup procedure for the apparatus based on the determining.

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 receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, receive a wakeup signal during a monitoring occasion for wakeup signals, determine that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the UE, and initiate a wakeup procedure for the UE based on the determining.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a hopping pattern for the set of wakeup grouping sets, and determining the wakeup grouping set for the monitoring occasion according to the identified hopping pattern.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying an index associated with the monitoring occasion, the index including a system frame number, or a DRX cycle index, or a frequency resource index, or a carrier index, or a combination thereof, and determining the wakeup grouping set for the monitoring occasion according to the identified hopping pattern and the index associated with the monitoring occasion.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for attempting to decode the received wakeup signal according to a set of decoding hypotheses that correspond to the set of wakeup grouping sets, determining a successful decoding hypothesis of the set of decoding hypotheses, and identifying the wakeup grouping set as corresponding to the successful decoding hypothesis.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the signaling configuring the UE with the set of wakeup grouping sets may include operations, features, means, or instructions for receiving radio resource control signaling from a base station indicating the set of wakeup grouping sets.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each group of the set of groups may be associated with a different resource than each other group of the set of groups.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the resource includes a frequency resource, or a time resource, or a control channel signaling type, or a reference signal type, or a data payload, or a radio network temporary identifier, or a combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, for each wakeup grouping set of the set of wakeup grouping sets, the one or more UEs may be members of at least one group of the set of groups.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the received wakeup signal includes one or more reference signals, or control channel signaling, or one or more predetermined sequences, or a combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the one or more reference signals include a channel state information reference signal, or a tracking reference signal, or a demodulation reference signal, or a synchronization signal, or a combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the one or more predetermined sequences include a pseudo-noise code sequence, or a Gold sequence, or a Zadoff-Chu sequence, or a combination thereof.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for monitoring a control channel subsequent to initiating the wakeup procedure.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, within the control channel, a grant from a base station serving the UE, and communicating with the base station based on the grant.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the resources of the monitored control channel may be different than resources of the monitoring occasion for wakeup signals.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the monitoring occasion includes a pre-wakeup window of a connected mode DRX cycle.

A method of wireless communication at a base station is described. The method may include transmitting, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, determining, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE, and transmitting, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set.

An apparatus for wireless communication is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE, and transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set.

Another apparatus for wireless communication is described. The apparatus may include means for transmitting, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, determining, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE, and transmitting, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set.

A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor to transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE, and transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a hopping pattern for the set of wakeup grouping sets, and determining the wakeup grouping set for the monitoring occasion according to the identified hopping pattern.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying an index associated with the monitoring occasion, the index including a system frame number, or a DRX cycle index, or a frequency resource index, or a carrier index, or a combination thereof, and determining the wakeup grouping set for the monitoring occasion according to the identified hopping pattern and the index associated with the monitoring occasion.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the signaling configuring the UE with the set of wakeup grouping sets may include operations, features, means, or instructions for transmitting radio resource control signaling indicating the set of wakeup grouping sets.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a second group of the wakeup grouping set for one or more additional UEs, and where transmitting the wakeup signal for the group that includes the UE includes: transmitting, during the monitoring occasion, the wakeup signal for the group that includes the UE using a first set of resources and for the second group for the one or more additional UEs on a second set of resources.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each group of the set of groups may be associated with a different resource than each other group of the set of groups.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the resource includes a frequency resource, or a time resource, or a control channel signaling type, or a reference signal type, or a data payload, or a radio network temporary identifier, or a combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, for each wakeup grouping set of the set of wakeup grouping sets, the one or more UEs may be members of at least one group of the set of groups.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the transmitted wakeup signal includes one or more reference signals, or control channel signaling, or one or more predetermined sequences, or a combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the one or more reference signals include a channel state information reference signal, or a tracking reference signal, or a demodulation reference signal, or a synchronization signal, or a combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the one or more predetermined sequences include a pseudo-noise code sequence, or a Gold sequence, or a Zadoff-Chu sequence, or a combination thereof.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the UE, a grant within a control channel subsequent to the monitoring occasion, and communicating with the UE based on the grant.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the resources of the control channel may be different than resources of the monitoring occasion for wakeup signals.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the monitoring occasion includes a pre-wakeup window of a connected mode DRX cycle.

DETAILED DESCRIPTION

Some wireless communications systems (e.g., millimeter wave (mmW) systems) may support user equipment (UEs) operating in a discontinuous reception (DRX) mode (e.g., a connected DRX (C-DRX) mode). A base station (e.g., eNodeB (eNB), a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB)) may serve a large number of UEs within a cell. To efficiently use wakeup signals, the base station may differentiate the wakeup signals intended for group of UEs based in part on a wakeup signal configuration, which may include a set of wakeup grouping sets. Each wakeup grouping set may include at least one group of one or more UEs, and each UE may be a member of at least one group within a wakeup grouping set. By way of example, when in a DRX mode, a group of UEs may monitor for wakeup signals according to the wakeup signal configuration. If the UEs receive a wakeup signal that indicates a group to which the UEs are a member, the UEs may determine that the wakeup signal is intended for the UEs. According to this determination, the UEs may initiate a wakeup procedure and transition to an active mode for data transmission and reception. However, if the UEs detect a wakeup signal that does not correspond to a group to which the UEs are a member, the UEs may determine that the wakeup signal is not intended for the UEs (e.g., intended for a different UE) and may not wake up. In this way, a set of wakeup grouping sets may reduce the number of false wakeups performed by the UEs and improving the power savings at the UEs.

Further, the techniques described herein may reduce or eliminate latencies associated with processes related to wakeup signaling for a DRX operation, and more specifically enable the base station to configure the UEs with wakeup grouping for the DRX operation to improve power savings of the UEs. As a result, the UEs may experience reduced occurrences of false wakeups, or no false wakeups. For example, in a traffic imbalance scenario, some UEs may have relatively high downlink traffic, while other UEs may have relatively low traffic. For example, one UE may have downlink traffic, while other UEs may have no data traffic. In such example, if a single wakeup grouping set is configured, the others UEs may continuously wake up unnecessarily, thereby incurring a power penalty (e.g., using power to wake up from a sleep state). By configuring different wakeup grouping sets and corresponding different wakeup signal resources (e.g., according to a hopping pattern), the power penalty of false wakeups may be reduced by sharing the power penalty across all the UEs.

Aspects of the disclosure are initially described in the context of wireless communications systems. Additional aspects of the disclosure are described with respect to a wakeup procedure timeline and a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to wakeup grouping for DRX operation.

Some wireless communications systems100(e.g., mmW systems) may support UEs115operating in a DRX mode (or a C-DRX mode). In a DRX mode, a UE115may switch between an active state for data transmission and reception and a sleep state for power saving. The UE115may determine if data is available by monitoring a control channel, such as a physical downlink control channel (PDCCH). The PDCCH may carry or otherwise convey an indication that a base station105has data prepared to transmit to the UE115or is scheduling the UE115for data transmission. In some examples, base stations105may use a wakeup signal to convey an indication that the base stations105have data ready to transmit to the UEs115or are scheduling the UEs115for data transmission. Examples of a wakeup signal may be a reference signal-type signals, such as a channel state information (CSI) reference signal (CSI-RS), or a tracking reference signal (TRS), or a demodulation reference signal (DMRS), a synchronization signal, or the like. In other examples, examples of wakeup signals may be PDDCH-type signals. In some examples, a wakeup signal may be scrambled according to a scrambling sequence, such as a pseudo-noise (PN) sequence, a Zadoff-Chu (ZC) sequence, or a Gold sequence, etc.

To reduce the frequency of control channel monitoring and improve power efficiency at the UE115during DRX operation, the UE115may monitor for a wakeup signal while in a low power mode. For example, if the UE115receive (or detects) a wakeup signal transmitted by the base station105, the UE115may transition to a higher power mode to monitor the control channel for scheduling information. However, if the UE115does not receive (or detect) a wakeup signal transmitted by the base station105, the UE115may skip a control channel monitoring opportunity and instead return to a deep sleep mode. Thus, the UE115may reduce occasions of having to unnecessarily wakeup (e.g., when no data transmissions are scheduled during a duration (e.g., an ON duration) associated with an active state), improving the power savings at the UE115.

A base station105may serve a large number of UEs115within a cell (e.g., geographic coverage area). To resourcefully use wakeup signals, the base station105may differentiate the wakeup signals intended for each UE115or group of UEs115based in part on a wakeup signal configuration. In some examples, the wakeup signal configuration may be specific to each UE115. That is, each UE115may have a dedicated wakeup signal, a wakeup signal monitoring occasion, or both. In other examples, the wakeup signal configuration may include a group of UEs115that share the same wakeup signal, wakeup signal monitoring occasion, or both. In some examples, the wakeup signal configuration may provide resource efficiency for base stations105, and therefore benefit base stations105with reduced overhead signaling. Additionally, the wakeup signal configuration may provide power efficiencies to UEs115, and therefore benefit UEs115with improved power savings.

The wakeup signal configuration may include a number of wakeup grouping sets and a number of wakeup signal resources for wakeup signaling monitoring occasions. In some examples, UEs115may be configured with multiple wakeup grouping sets. Each wakeup grouping set may include one or more UEs115, and each UE115may be a member of at least one group of the wakeup grouping set. In some examples, UEs115that belong to a same group may be awakened simultaneously by a wakeup signal. For UEs115that belong to different groups, the base stations105may transmit one or more wakeup signals to the different groups concurrently and distinguish between the wakeup signals of the different groups of the wakeup grouping sets based in part on a resource allocation (e.g., mapping of frequency and time resources, sequences), a waveform (e.g., control channel type, reference signal type, and the like), or a message (e.g., data payload embedded in a wakeup signal, a radio network temporary identifier (RNTI) associated with a waveform (e.g., for a PDCCH-type wakeup signal)), and the like. Therefore, at a given time, the base stations105may select a group from the wakeup grouping sets and transmit one or more wakeup signals to the UEs115belonging to the selected group.

Base stations105may transmit configuration signaling to configure UEs115with the number of wakeup grouping sets and the number of wakeup signal resources for wakeup signaling monitoring occasions, such that the UEs115may operate appropriately in a DRX mode. For example, a base station105may transmit a wakeup signal configuration to a UE115via higher-layer signaling (e.g., RRC signaling) to configure the UE115with the number of wakeup grouping sets and the number of wakeup signal resources for wakeup signaling monitoring occasions. Each UE115may be configured with a configuration that indicates how the UE115monitors for wakeup signals, decodes wakeup signals, and the like. For example, if UEs115detect a wakeup signal transmitted in a wakeup grouping set for a group that includes the UEs115and on a wakeup signal resource configured for the UEs115, the UEs115may initiate a wakeup procedure according to the wakeup signal. Otherwise, UEs115may refrain from performing the wakeup procedure. Accordingly, by differentiating wakeup signals for different UEs115using these wakeup grouping sets, the wireless communications system100may support improved power savings at the UEs115, as well as reduced false wakeups.

FIG. 2illustrates an example of a wireless communications system200that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. In some examples, the wireless communications system200may implement aspects of the wireless communications system100. For example, the wireless communications system200may include a base station105-a, a UE115-a, and a UE115-b, which may be examples of the corresponding devices described with reference toFIG. 1. Some examples of the wireless communications system200may support an improved wakeup signaling configuration for a DRX operation.

The base station105-amay provide a network coverage for UEs115within geographic coverage area110-a. In some examples, UEs115may support DRX operation with wakeup signals210for improved power efficiency. For example, a UE115may operate in a low power mode until signaled, via a wakeup signal210, to transition into a higher power mode to support data transmission and reception. These wakeup signals210may be examples of reference signal-type signals or PDCCH-type signals. UEs115(e.g., the UE115-aand the UE115-b) may differentiate between wakeup signals210transmitted by base station105-abased on different wakeup signal configurations.

In the wireless communications system200(e.g., a millimeter wave (mmW) system supporting beamforming), the base station105-amay transmit wakeup signals210using a beam sweeping procedure. For example, the base station105-amay transmit wakeup signals210on a downlink channel205(e.g., PDCCH) using a number of different downlink transmit beams215. The base station105-amay sweep through different transmit beams for transmitting the wakeup signaling to improve the reception reliability at the UEs115. For example, when a UE115is in a low power mode (e.g., a sleep mode), the UEs115may experience some level of beam degradation, such as beam misalignment, beam blocking, etc.

To reduce the probability that the UEs115miss a wakeup signal210transmitted by the base station105-adue to this beam degradation, the base station105-amay use a variety of beam directions, beam widths, or both for transmitting the wakeup signal210to the UEs115. If the UEs115successfully receives one or more of the wakeup signals210transmitted in the beam sweeping procedure, the UEs115may perform a wakeup procedure and transition to a higher power level to support data transmission and reception. The number of downlink transmit beams or the directions of the beams in the beam sweep may be dynamically determined by the base station105-a. The UEs115may attempt to receive the wakeup signals210using a number of downlink receive beams220. For example, the UE115-amay monitor for wakeup signaling using downlink receive beams220-aand the UE115-bmay monitor for wakeup signaling using downlink receive beams220-b.

In some examples, each wakeup signal210may either be a UE-specific or group-specific wakeup signal210. For example, the base station105-amay transmit a UE-specific wakeup signal210to initiate a wakeup procedure at one particular UE115. That is, each UE115may have a dedicated wakeup signal210, dedicated signaling occasions, or both. This may result in a large network overhead (e.g., for the base station105-ato transmit wakeup signals210for each UE115scheduled to wake up) but highly flexible and efficient wakeup signaling for improved UE power saving. The base station105-amay transmit a wakeup signal210-aon a downlink channel205-ato wake up the UE115-aand a wakeup signal210-bon a downlink channel205-bto wake up the UE115-b. If the UE115-bdetects the wakeup signal210-a, the UE115-bmay identify that the wakeup signal210-ais intended for a different UE115and may not perform a wakeup procedure. Alternatively, the base station105-amay transmit a group-specific wakeup signal210to wake up both the UE115-aand the UE115-bif both of the UEs115are in a same UE group. That is, each pre-defined or dynamically defined group of UEs115may share the same wakeup signal210, wakeup signal monitoring occasion, or both. This may result in a low network overhead, but one or more UEs115may wake up based on a group-specific wakeup signal210even if the wakeup signal210is intended for another UE115in the same group. A UE115waking up even if there is no data to transmit or receive (e.g., a false wakeup) based on a group-specific wakeup signal210may incur a power penalty.

To support a large number of UEs115within a cell (e.g., the geographic coverage area110-a) and address the shortcoming of standing UE-specific and group-specific wakeup signal configurations, UEs115may be configured to receive wakeup signals210according to a wakeup signal configuration including a set of wakeup grouping sets and a set of wakeup signal resources for wakeup signal monitoring occasions. Each wakeup grouping set of the set of wakeup grouping sets may include at least one group of one or more UEs115, and for each wakeup grouping set, the UEs115may be a member of at least one group of each of the wakeup grouping set. Thus, the wakeup signal configuration described herein using wakeup grouping set may efficiently use resources to support wakeup procedures for multiple UEs115with minimal power penalties. That is, by configuring UEs115with wakeup grouping sets for wakeup occasions, the base station105-amay initiate wakeup procedures with the UEs115and reduce occurrences of unnecessarily waking up other UEs115or groups of UEs115.

The base station105-amay generate a wakeup signal configuration to configure the UEs115with a set of wakeup grouping sets and a set of wakeup signal resources for wakeup signal monitoring occasions for a DRX operation. The monitoring occasions may include a pre-wakeup window of a C-DRX cycle. In an example, the base station105-amay generate the wakeup signal configuration (e.g., the set of wakeup grouping sets and wakeup signal resources) based on a pattern, which may be a hopping pattern. In some examples, the base station105-amay configure the set of wakeup grouping sets as a function of time. For example, the base station105-amay identify an index associated with the monitoring occasion, and determine the wakeup grouping set for the monitoring occasion according to the identified hopping pattern and the index associated with the monitoring occasion. The index may include a system frame number, or a DRX cycle index, or a frequency resource index, or a carrier index, or a combination thereof.

In a general example, the base station105-amay configure and store a wakeup signal configuration lookup table including different wakeup grouping sets with different UEs115or sets of UEs115belonging to different groups of different wakeup grouping sets.

The wakeup signal configuration lookup table may, in some examples, be a relational database including the wakeup signal configuration lookup table with a set of column and row elements. For example, the wakeup signal configuration lookup table may include a column indicating a set of wakeup grouping sets, which may include a number, N, of different sets of wakeup grouping sets. The wakeup signal configuration lookup table may also include a number, N, of columns indicating different groups associated with each set of wakeup grouping sets. Each wakeup grouping set of the set of wakeup grouping sets may, and more specifically each group associated with each set of wakeup grouping set may include an indication of one or more UEs115belonging to the group.

In some cases, the base station105-amay configure and store a wakeup signal configuration lookup table (Table 2) including different wakeup grouping sets with different UEs115, or sets of UEs115, belonging to different groups of different wakeup grouping sets:

The wakeup signal configuration table may support wakeup grouping for DRX operation for different UEs115. In some examples, the UEs115may store the wakeup signal configuration lookup table in memory, for example based on configuration signaling from base station105-a, or another base station105, that identifies the contents of the table. The base station105-amay then transmit an indicator to the UEs115that indicates a specific wakeup grouping set in the lookup table for the UEs115to use for wakeup signal monitoring and reception. In other cases, base station105-amay store the wakeup signal configuration lookup table in memory and may transmit an indication of one of the wakeup grouping sets to the UE115.

For example, the wakeup signal configuration table may indicate at least three different wakeup grouping sets. In some examples, the wakeup signal configuration table may include more or less than three wakeup grouping sets. Each wakeup grouping set may include one or more groups of UEs115per wakeup grouping set. In some examples, the base station105-amay facilitate the wakeup signal configuration in the wakeup signal configuration table based in part on the hopping pattern. Thus, the hopping pattern may indicate how the different sets of wakeup grouping sets are used by the base station105-a, and thus determine how the UEs115monitor for (and receive) wakeup signals based on the wakeup group sets.

With reference to the wakeup signal configuration table (Table 2), UE1 may refer to the UE115-a, while the UE2 may refer to the UE115-b. UE3 through UE9 may refer to other UEs115(not shown). In a traffic imbalance scenario, some UEs115may have relatively high downlink traffic, while other UEs115may have relatively low traffic. For example, UE1 (e.g., the UE115-a) may have downlink traffic, while the UE2 (e.g., the UE115-b) may have no data traffic. Here, if a single wakeup grouping set (e.g., Set 1) is configured, UE2 and UE3 may continuously wake up unnecessarily, thereby incurring a power penalty. By configuring different wakeup grouping sets according to a hopping pattern, the power penalty of false wakeups can be reduced by sharing the power penalty across UEs115. In other examples, the base station105-amay wake up UE3 and UE4 because they may have downlink traffic. If a single wakeup grouping set (e.g., Set 1) is used, the base station105-amay transmit two wakeup signals corresponding to the two different groups that UE3 and UE4 belong to (e.g., Group 1 and Group 2). With two wakeup signals, other additional UEs115(e.g., UE1, UE2, UE5, UE6) may wakeup unnecessarily and waste resources (e.g., power). However, by using multiple wakeup grouping sets, the base station105-amay reduce false or unnecessary wakeups for other UEs115. For example, the base station105-amay select an appropriate wakeup grouping set (e.g., Set 2 or Set 3), which includes UE3 and UE4 in the same group (e.g., Group 1). As a result, the number of UEs115that have to wakeup unnecessarily is decreased (e.g., only UE2 will falsely wakeup rather than UE1, UE2, UE5, and UE6).

In some examples, the base station105-amay determine, for a monitoring occasion, at least one resource of a set of wakeup signal resources associated with a group of the wakeup grouping sets that includes the UEs115. That is, for a monitoring occasion, each group associated with a wakeup grouping set may be associated with at least one resource (e.g., time and frequency resource(s)). For example, a first group (e.g., Group 1) in the wakeup signal configuration table may be associated with a first resource, a second group (e.g., Group 2) in the wakeup signal configuration table may be associated with a second resource, and a third group (e.g., Group 3) in the wakeup signal configuration table may be associated with a third resource, etc. The resource(s) associated with (and between) each group in the wakeup grouping set may be same or different frequency resources, or different time resources, or different control channel signaling types, or different reference signal types, or different data payloads, or different RNTIs, or a combination thereof.

The base station105-amay transmit, to the UEs115, configuration signaling that configures a UE115with the set of wakeup grouping sets and the set of wakeup signal resources for wakeup signal monitoring occasions. For example, the base station105-amay transmit the wakeup signal configuration to the UE115-aon a downlink channel205-aand to the UE115-bon a downlink channel205-b. In some examples, the base station105-amay transmit the wakeup signal configuration via RRC signaling, for example, during a connection procedure (e.g., an RRC procedure, such as a cell acquisition procedure, a random-access procedure, an RRC connection procedure, an RRC configuration procedure). Upon receiving the wakeup signal configuration, the UEs115may determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, and more specifically determine a group in a wakeup grouping set that includes the UEs115. For example, the UE115-amay determine a group in a wakeup grouping set that includes the UE115-a, while the UE115-bmay determine a same or different group in a wakeup grouping set that includes the UE115-b. In some examples, the UEs115may belong to a same or different group.

Following the configuring of the UEs115with the wakeup signal configuration, the base station105-amay select a specific group of a wakeup grouping set that has a UE115(e.g., the UE115-a, the UE115-b) for which the base station105-amay have data for communications, and transmit a wakeup signal during a monitoring occasion using one or more wakeup signal resources. When receiving the wakeup signal, the UEs115may identify the selected group of the wakeup grouping set according to a hopping pattern and index of the monitoring occasion. For example, the UE115-amay identify an index associated with a monitoring occasion, and determine the selected group of the wakeup grouping set for the monitoring occasion according to the identified hopping pattern and the index associated with the monitoring occasion. The index may include a system frame number, or a DRX cycle index, or a frequency resource index, or a carrier index, or a combination thereof.

Additionally, or alternatively, the UEs115may identify the selected group of the wakeup grouping set according to a set of decoding hypotheses. For example, with reference to wakeup signal configuration table, UE1 (e.g., the UE115-a) belongs to a first wakeup grouping set (e.g., Set 1) and a first group (e.g., Group 1) of the first wakeup grouping set, a second wakeup grouping set (e.g., Set 2) and a third group (e.g., Group 3) of the second wakeup grouping set, and a third wakeup grouping set (e.g., Set 3) and a third group (e.g., Group 3) of the third wakeup grouping set. Here, the UE1 (e.g., the UE115-a) may blindly decode three wakeup signal candidates and if at least one is detected, the UE1 may proceed to initiate a wakeup procedure. For example, the UE115-amay attempt to decode the wakeup signal210-aaccording to a set of decoding hypotheses that corresponds to the set of wakeup grouping sets, and determine a successful decoding hypothesis of the set of decoding hypotheses. As a result, the UE115-amay identify the wakeup grouping set that corresponds to the successful decoding hypothesis and initiate a wakeup procedure for the UE115-a. The wakeup procedure may include switching to an active mode to monitor a control channel subsequent to initiating the wakeup procedure. For example, subsequently, the UE115-amay receive, within the control channel, a grant from the base station105-aand communicate with the base station105-abased in part on the grant.

Therefore, the techniques described herein may reduce or eliminate latencies associated with processes related to wakeup signaling for a DRX operation, and more specifically enable the base station105-ato configure the UEs115with wakeup grouping for a DRX operation to improve power savings of the UEs115. As a result, the UEs115may experience reduced, or no occurrences of false wakeups.

FIG. 3illustrates an example of a wakeup procedure timeline300that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The wakeup procedure timeline300may correspond to wakeup signaling between a base station105and a UE115, which may be examples of the corresponding devices described with respect toFIGS. 1 and 2. Some examples of the wakeup procedure timeline300may support an improved wakeup signaling configuration for the DRX operation. While the wakeup signal configuration for the wakeup procedure timeline300, as illustrated, shows one possible wakeup signal configuration, many other configurations are possible using any of the techniques described herein.

Traffic behavior (e.g., data transmission and reception) may often vary between the base station105and the UE115, for example, with occasional periods of transmission activity followed by longer periods of silence. From a latency perspective, it may be beneficial for the UE115to monitor a control channel (e.g., PDCCH) for downlink control signaling from the base station105to receive uplink grants or downlink data transmissions and instantaneously react on changes in the traffic behavior. However, at the same time, it may be costly for the UE115in terms of power consumption. To reduce power consumption at the UE115, the UE115may operate in a DRX mode. For example, a UE115may operate in a DRX mode according to a DRX timeline305.

The DRX timeline305may include a DRX cycle (e.g., C-DRX cycle325), which may be configurable in length (e.g., duration of a DRX cycle may be adaptable). With a DRX cycle configured, the UE115may monitor a control channel for a wakeup signal (or other signaling (e.g., downlink control signaling)) during a portion of the DRX cycle in a low power mode, and switch to a sleep mode during the remaining portion of the DRX cycle. This allows for significant reductions in power consumption. In some examples, the longer the DRX cycle, the lower the power consumption. However, in some examples, the DRX cycle may be a short DRX cycle (e.g., 20 ms).

In some examples, the DRX timeline305may include a pre-wakeup window310(that may be part or separate from a DRX cycle), in which a UE115may, as part of a pre-wakeup procedure, monitor a control channel for one or more wakeup signals from the base station105. The pre-wakeup procedure may involve the UE115transitioning to a higher power level than the sleep mode, but a lower power level than the active mode, to monitor for wakeup signals from the base station105. The UE115may monitor one or more wakeup signal resources (e.g., time and frequency resources) for one or more wakeup signals from the base station105using a set of downlink receive beams. As explained with reference toFIG. 2, the UE115may be configured with a set of wakeup grouping sets and a set of wakeup signal resources for monitoring occasions. In the example ofFIG. 3, the set of wakeup signal resources may include a first wakeup signal resource315-a, a second wakeup signal resource315-b, and a third wakeup signal resource315-c.

The UE115, in the example ofFIG. 3, may belong to at least one wakeup grouping set that may correspond to at least one of the wakeup signal resources315. By way of example, the UE115may belong to a first wakeup grouping set and within the set the UE115may be designated the third wakeup signal resource315-c. That is, the UE115may monitor the wakeup signal resource315-c(e.g., time and frequency resources) for one or more wakeup signals from the base station105using a set of downlink receive beams. In some examples, during the pre-wakeup window310, the base station105may not have data to transmit to the UE115or receive from the UE115. Thus, the base station105may not transmit a wakeup signal to the UE115(e.g., on the wakeup signal resource315-c). If the UE115does not detect or otherwise receive a wakeup signal on a wakeup signal resource (e.g., the wakeup signal resources315) that corresponds to a group that includes the UE115, the UE115may skip a DRX ON duration at320for the C-DRX cycle325and may return to the lower power mode (e.g., go back to sleep). In this way, the UE115may reduce its power consumption by not entering a DRX ON duration when there is no data scheduled for reception or transmission.

In some examples, the base station105may identify data to transmit to the UE115or data to receive from the UE115. In this example, the base station105may transmit a wakeup signal to the UE115on a wakeup signal resource (e.g., the wakeup signal resources315) that corresponds to a group that includes the UE115using a beam sweeping procedure (e.g., transmitting the wakeup signal using a number of downlink transmit beams). The UE may pre-wake up during C-DRX cycle325and may attempt to detect the wakeup signal using a set of downlink receive beams. If the UE115detects the wakeup signal on one or more downlink receive beams and on a wakeup signal resource (e.g., the wakeup signal resources315) that corresponds to a group that includes the UE115, the UE115may perform a full wakeup procedure to transmit or receive the scheduled data in an ON duration330. For example, the UE115may receive a wakeup signal during a monitoring occasion (of the C-DRX cycle325) on the wakeup signal resource315-c, determine a wakeup grouping set of the set of wakeup grouping sets associated with the monitoring occasion, and detect, based in part on the identified wakeup grouping set, that the wakeup signal is in at least the wakeup resource set315-c. Therefore, the UE115may identify that the wakeup signal is intended for the UE115based on the identified wakeup grouping set and that the wakeup signal is in at least the wakeup resource set315-c.

Thus, the techniques described herein may provide efficacy to the base station105and the UE115by reducing or eliminating latencies associated with processes related to wakeup signaling for DRX operation, and more specifically enabling the base station105to configure the UE115with wakeup grouping for DRX operation to improve power savings of the UE115. As a result, the UE115may experience none or at least reduced occurrences of false wakeups.

FIG. 4illustrates an example of a wakeup procedure timeline400that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The wakeup procedure timeline400may correspond to wakeup signaling between a base station105and one or more UEs115, which may be examples of the corresponding devices described with respect toFIGS. 1 and 2. Some examples of the wakeup procedure timeline400may support an improved wakeup signaling configuration for DRX operation, and more specifically a wakeup signaling configuration according to a hopping pattern. By configuring different wakeup grouping sets according to a hopping pattern, a power penalty of false wakeups can be reduced by sharing the power penalty across different UEs115. While the wakeup signal configuration for the wakeup procedure timeline400, as illustrated, shows one possible wakeup signal configuration, many other configurations are possible using any of the techniques described herein.

A DRX timeline405illustrates the operations performed by a UE115. For example, the UE115may monitor a channel (e.g., a PDCCH) for one or more wakeup signals from a base station105during a C-DRX cycle410-a. Here, the UE115may monitor one or more wakeup signal resources (e.g., time and frequency resources) for one or more wakeup signals from the base station105using a set of downlink receive beams. As explained with reference toFIG. 2, the UE115may be configured with a set of wakeup grouping sets and a set of wakeup signal resources for monitoring occasions. In the example ofFIG. 4, the set of wakeup signal resources may include a first wakeup signal resource415-a, a second wakeup signal resource415-b, and a third wakeup signal resource415-c.

The UE115, in the example ofFIG. 4, may belong to at least one wakeup grouping set that may correspond to at least one of the wakeup signal resources415. By way of example, the UE115may belong to a first wakeup grouping set and within the set, the UE115may be designated the second wakeup signal resource415-b. That is, the UE115may monitor the wakeup signal resource415-b(e.g., time and frequency resources) for one or more wakeup signals from the base station105using a set of downlink receive beams. In some examples, during the C-DRX cycle410-a, the base station105may not have data to transmit to the UE115or receive from the UE115. Thus, the base station105may not transmit a wakeup signal to the UE115on the wakeup signal resource415-b.

In some examples, if the UE115does not detect or otherwise receive a wakeup signal on a wakeup signal resource (e.g., wakeup signal resources415-b) that corresponds to a group that includes the UE115, the UE115may skip a DRX ON duration420-aand may return to the lower power mode (e.g., go back to sleep). In this way, the UE115may reduce its power consumption by not entering a DRX ON duration when there is no data scheduled for reception or transmission. In some examples, during the C-DRX cycle410-a, the base station105may have data to transmit to another UE115or receive from the other UE115. Here, the base station105may transmit, to the other UE115, a wakeup signal on a wakeup signal resource (e.g., the wakeup signal resource415-a) that corresponds to a group that includes the other UE115. Additionally, during the C-DRX cycle410-b, the base station105may not have data to transmit to the UE115or receive from the UE115. Thus, the base station105may not transmit a wakeup signal to the UE115on the wakeup signal resource415-bduring the C-DRX cycle410-b, and the UE115may skip a DRX ON duration420-b. However, the base station105may have data to transmit to another UE115or receive from the other UE115. Here, the base station105may transmit, to the other UE115, a wakeup signal on a wakeup signal resource (e.g., the wakeup signal resource415-c) that corresponds to a group that includes the other UE115.

During the C-DRX cycle410-c, the base station105may identify data to transmit to the UE115or data to receive from the UE115. In this example, the base station105may transmit a wakeup signal to the UE115on a wakeup signal resource (e.g., the wakeup signal resources415-b) that corresponds to a group that includes the UE115using a beam sweeping procedure (e.g., transmitting the wakeup signal using a number of downlink transmit beams). The UE115may pre-wake up during the C-DRX cycle410-cand may attempt to detect the wakeup signal using a set of downlink receive beams. If the UE115detects the wakeup signal on any of these downlink receive beams and on a wakeup signal resource (e.g., the wakeup signal resources415-b) that corresponds to a group that includes the UE115, the UE115may initiate and perform a full wakeup procedure to transmit or receive the scheduled data in an ON duration420-c.

In some examples, the UE115may be configured with a particular decoding hypothesis for successfully decoding a received wakeup signal according to the wakeup signal configuration for the UE115. For example, the UE115may attempt to decode the wakeup signal according to a set of decoding hypotheses that corresponds to the set of wakeup grouping sets and determine a successful decoding hypothesis of the set of decoding hypotheses. As a result, the UE115may identify the wakeup grouping set that corresponds to the successful decoding hypothesis and initiate a wakeup procedure for the UE115. The wakeup procedure may include switching to an active mode to monitor a control channel subsequent to initiating the wakeup procedure. For example, the UE115may receive, within the control channel, a grant from the base station105and communicate with the base station105based in part on the grant.

Thus, the techniques described herein may reduce or eliminate latencies associated with processes related to wakeup signaling for DRX operation, and more specifically enabling the base station105to configure the UE115with wakeup grouping for DRX operation to improve power savings of the UE115. As a result, the UE115may experience none or at least reduced occurrences of false wakeups. For example, in a traffic imbalance scenario, some UEs115may have relatively high downlink traffic, while other UEs115may have relatively low traffic. For example, a UE115associated with the wakeup signal resource415-amay have downlink traffic, another UE115associated with the wakeup signal resource415-bmay have no data traffic. Here, if a single wakeup grouping set is configured, the two UEs115may wake up unnecessarily, thereby incurring a power penalty. By configuring different wakeup grouping sets and corresponding different wakeup signal resources (e.g., according to a hopping pattern), the power penalty of false wakeups can be reduced by sharing the power penalty across the UEs115.

FIG. 5illustrates an example of a process flow500that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The process flow500may include a base station105-band a UE115-c, which may be examples of the corresponding devices described with reference toFIGS. 1 through 4. In some examples, the process flow500may implement aspects of the wireless communications systems100and200. For example, the base station105-band the UE115-cmay support an improved wakeup signaling configuration for DRX operation.

In the following description of the process flow500, the operations between the base station105-band the UE115-cmay be performed in a different order than the exemplary order shown, or the operations performed by the base station105-band the UE115-cmay be performed in different orders or at different times. Certain operations may also be left out of the process flow500, or other operations may be added to the process flow500. The process flow500may, in some examples, commence with the base station105-bestablishing a connection with the UE115-c(e.g., performing a cell acquisition procedure, a random access procedure, an RRC connection procedure, an RRC configuration procedure).

At505, the base station105-bmay transmit configuration signaling to the UE115-c. The configuration signaling may configure the UE115-cwith a set of wakeup grouping sets. At510, the UE115-cmay identify a set of wakeup grouping sets, for example, based in part on the configuration signaling. In some examples, the base station105-bmay generate a wakeup signaling lookup table, and each index in the lookup table may correspond to a respective wakeup grouping set and at least one group of one or more UEs. The UE115-cmay be provided (or pre-configured) with the wakeup signaling lookup table. Here, the configuration signaling may include an indication (e.g., an index value) that maps to a wakeup grouping set, and more specifically to a group in the wakeup grouping set.

At515, the base station105-cmay transmit a wakeup signal to the UE115-c. The UE115-cmay monitor a control channel for a wakeup signal transmission from the base station105-c. For example, during a monitoring occasion, the UE115-cmay monitor a wakeup signal resource for a wakeup signal transmission based in part on the wakeup signal configuration to identify if the UE115-cshould wake up for data communication. In some examples, the base station105-bmay not identify data for communication with the UE115-c. Accordingly, the base station105-bmay not transmit a wakeup signal to the UE115-cduring the monitoring occasion. If the UE115-cdoes not detect a wakeup signal, the UE115-cmay remain in the low power mode. However, in other examples, the base station105-bmay identify data for communication with the UE115-c, and therefore transmit a wakeup signal to the UE115-c. At520, the UE115-cmay determine that the received wakeup signal indicates a group in a wakeup grouping set that includes the UE115-c.

At525, the UE115-cmay optionally monitor a control channel after waking up. For example, the UE115-cmay transition from the low power mode to a high power mode. In the high power mode during an ON duration, the UE115-cmay monitor a control channel (e.g., the PDCCH) for a scheduling grant. At530, the base station105-bmay transmit a grant to the UE115-con the PDCCH, where the grant schedules the UE115-cfor data transmission, data reception, or both during an active duration. At535, the UE115-cand the base station105-bmay communicate according to the scheduling grant.

The communications manager615may receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, receive a wakeup signal during a monitoring occasion for wakeup signals, determine that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the UE, and initiate a wakeup procedure for the UE based on the determining. The communications manager615may be an example of aspects of the communications manager910described herein.

FIG. 7shows a block diagram700of a device705that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The device705may be an example of aspects of a device605, or a UE115as described herein. The device705may include a receiver710, a communications manager715, and a transmitter730. The device705may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

The communications manager715may be an example of aspects of the communications manager615as described herein. The communications manager715may include a signaling component720and a wakeup component725. The communications manager715may be an example of aspects of the communications manager910described herein.

The operations performed by the communications manager715as described herein may be implemented to realize one or more potential advantages. One implementation may enable UEs to receive wakeup signals according to configured groups within wakeup grouping sets. Such configured groups may reduce false wakeup occurrences, resulting in higher data rates and more efficient communications (e.g., less communication errors), among other advantages.

Based on implementing the indications as described herein, a processor of a UE or base station (e.g., a processor controlling the receiver710, the communications manager715, the transmitter730, or a combination thereof) may reduce the impact or likelihood of false wakeup occurrences in a communications system while ensuring efficient communications. For example, the UE configurations described herein may leverage wakeup grouping sets as well as groups of UEs within the sets to divide the power penalty across the UEs, which may realize reduced signaling overhead and power savings, among other benefits.

The signaling component720may receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. The wakeup component725may receive a wakeup signal during a monitoring occasion for wakeup signals, determine that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the UE, and initiate a wakeup procedure for the UE based on the determining.

The transmitter730may transmit signals generated by other components of the device705. In some examples, the transmitter730may be collocated with a receiver710in a transceiver module. For example, the transmitter730may be an example of aspects of the transceiver920described with reference toFIG. 9. The transmitter730may utilize a single antenna or a set of antennas.

FIG. 8shows a block diagram800of a communications manager805that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The communications manager805may be an example of aspects of a communications manager615, a communications manager715, or a communications manager910described herein. The communications manager805may include a signaling component810, a wakeup component815, a pattern component820, an index component825, a decoding component830, a monitoring component835, and a grant component840. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).

The signaling component810may receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. In some examples, the signaling component810may receive RRC signaling from a base station indicating the set of wakeup grouping sets. In some examples, each wakeup grouping set of the set of wakeup grouping sets, the one or more UEs are members of at least one group of the set of groups. In some cases, each group of the set of groups is associated with a different resource than each other group of the set of groups. In some cases, the resource includes a frequency resource, or a time resource, or a control channel signaling type, or a reference signal type, or a data payload, or a radio network temporary identifier, or a combination thereof. In some cases, the monitoring occasion includes a pre-wakeup window of a connected mode DRX cycle.

The wakeup component815may receive a wakeup signal during a monitoring occasion for wakeup signals. In some examples, the wakeup component815may determine that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the UE. In some examples, the wakeup component815may initiate a wakeup procedure for the UE based on the determining. In some cases, the received wakeup signal includes one or more reference signals, or control channel signaling, or one or more predetermined sequences, or a combination thereof. In some cases, the one or more reference signals include a channel state information reference signal, or a tracking reference signal, or a demodulation reference signal, or a synchronization signal, or a combination thereof. In some cases, the one or more predetermined sequences include a pseudo-noise code sequence, or a Gold sequence, or a Zadoff-Chu sequence, or a combination thereof.

The pattern component820may identify a hopping pattern for the set of wakeup grouping sets. In some examples, the pattern component820may determine the wakeup grouping set for the monitoring occasion according to the identified hopping pattern. The index component825may identify an index associated with the monitoring occasion, the index including a system frame number, or a DRX cycle index, or a frequency resource index, or a carrier index, or a combination thereof. In some examples, the index component825may determine the wakeup grouping set for the monitoring occasion according to the identified hopping pattern and the index associated with the monitoring occasion.

The decoding component830may attempt to decode the received wakeup signal according to a set of decoding hypotheses that correspond to the set of wakeup grouping sets. In some examples, the decoding component830may determine a successful decoding hypothesis of the set of decoding hypotheses. In some examples, the decoding component830may identify the wakeup grouping set as corresponding to the successful decoding hypothesis.

The monitoring component835may monitor a control channel subsequent to initiating the wakeup procedure. The grant component840may receive, within the control channel, a grant from a base station serving the UE. In some examples, the grant component840may communicate with the base station based on the grant. In some examples, the grant component840may resources of the monitored control channel are different than resources of the monitoring occasion for wakeup signals.

FIG. 9shows a diagram of a system900including a device905that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The device905may be an example of or include the components of device605, device705, or a UE115as described herein. The device905may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager910, an I/O controller915, a transceiver920, an antenna925, memory930, and a processor940. These components may be in electronic communication via one or more buses (e.g., bus945).

The communications manager910may receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, receive a wakeup signal during a monitoring occasion for wakeup signals, determine that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the UE, and initiate a wakeup procedure for the UE based on the determining.

The I/O controller915may manage input and output signals for the device905. The I/O controller915may also manage peripherals not integrated into the device905. In some cases, the I/O controller915may represent a physical connection or port to an external peripheral. In some cases, the I/O controller915may utilize an operating system such as iOS, ANDROID, MS-DOS, MS-WINDOWS, OS/2, UNIX, LINUX, or another known operating system. In other cases, the I/O controller915may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller915may be implemented as part of a processor. In some cases, a user may interact with the device905via the I/O controller915or via hardware components controlled by the I/O controller915.

The transceiver920may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above. For example, the transceiver920may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver920may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas. In some cases, the device905may include a single antenna925. However, in some cases, the device905may have more than one antenna925, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.

The receiver1010may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to wakeup grouping for DRX operation, etc.). Information may be passed on to other components of the device1005. The receiver1010may be an example of aspects of the transceiver1320described with reference toFIG. 13. The receiver1010may utilize a single antenna or a set of antennas.

The communications manager1015may transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE, and transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set. The communications manager1015may be an example of aspects of the communications manager1310described herein.

FIG. 11shows a block diagram1100of a device1105that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The device1105may be an example of aspects of a device1005, or a base station105as described herein. The device1105may include a receiver1110, a communications manager1115, and a transmitter1130. The device1105may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

The communications manager1115may be an example of aspects of the communications manager1015as described herein. The communications manager1115may include a signaling component1120and a wakeup component1125. The communications manager1115may be an example of aspects of the communications manager1310described herein. The signaling component1120may transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. The wakeup component1125may determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE and transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set.

The transmitter1130may transmit signals generated by other components of the device1105. In some examples, the transmitter1130may be collocated with a receiver1110in a transceiver module. For example, the transmitter1130may be an example of aspects of the transceiver1320described with reference toFIG. 13. The transmitter1130may utilize a single antenna or a set of antennas.

FIG. 12shows a block diagram1200of a communications manager1205that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The communications manager1205may be an example of aspects of a communications manager1015, a communications manager1115, or a communications manager1310described herein. The communications manager1205may include a signaling component1210, a wakeup component1215, a pattern component1220, an index component1225, a grant component1230, and a monitoring component1235. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).

The signaling component1210may transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. In some examples, the signaling component1210may transmit RRC signaling indicating the set of wakeup grouping sets. In some examples, each wakeup grouping set of the set of wakeup grouping sets, the UE is a member of at least one group of the at least one group of one or more UEs. In some cases, each group of the set of groups is associated with a different resource than each other group of the set of groups. In some cases, the resource includes a frequency resource, or a time resource, or a control channel signaling type, or a reference signal type, or a data payload, or a radio network temporary identifier, or a combination thereof.

The wakeup component1215may determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE. In some examples, the wakeup component1215may transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set. In some examples, the wakeup component1215may identify a second group of the wakeup grouping set for one or more additional UEs. In some cases, the wakeup component1215may transmit, during the monitoring occasion, the wakeup signal for the group that includes the UE using a first set of resources and for the second group for the one or more additional UEs on a second set of resources. In some cases, the transmitted wakeup signal includes one or more reference signals, or control channel signaling, or one or more predetermined sequences, or a combination thereof. In some cases, the one or more reference signals include a channel state information reference signal, or a tracking reference signal, or a demodulation reference signal, or a synchronization signal, or a combination thereof. In some cases, the one or more predetermined sequences include a pseudo-noise code sequence, or a Gold sequence, or a Zadoff-Chu sequence, or a combination thereof.

The pattern component1220may identify a hopping pattern for the set of wakeup grouping sets. In some examples, the pattern component1220may determine the wakeup grouping set for the monitoring occasion according to the identified hopping pattern. The index component1225may identify an index associated with the monitoring occasion, the index including a system frame number, or a DRX cycle index, or a frequency resource index, or a carrier index, or a combination thereof. In some examples, the index component1225may determine the wakeup grouping set for the monitoring occasion according to the identified hopping pattern and the index associated with the monitoring occasion.

The grant component1230may transmit, to the UE, a grant within a control channel subsequent to the monitoring occasion. In some examples, the grant component1230may communicate with the UE based on the grant. In some examples, the grant component1230may resources of the control channel are different than resources of the monitoring occasion for wakeup signals. The monitoring component1235may include in the monitoring occasion includes a pre-wakeup window of a C-DRX cycle.

FIG. 13shows a diagram of a system1300including a device1305that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The device1305may be an example of or include the components of device1005, device1105, or a base station105as described herein. The device1305may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager1310, a network communications manager1315, a transceiver1320, an antenna1325, memory1330, a processor1340, and an inter-station communications manager1345. These components may be in electronic communication via one or more buses (e.g., bus1350).

The communications manager1310may transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs, determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE, and transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set.

The memory1330may include RAM, ROM, or a combination thereof. The memory1330may store computer-readable code1335including instructions that, when executed by a processor (e.g., the processor1340) cause the device to perform various functions described herein. In some cases, the memory1330may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.

At1405, the UE may receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. The operations of1405may be performed according to the methods described herein. In some examples, aspects of the operations of1405may be performed by a signaling component as described with reference toFIGS. 6 through 9.

At1410, the UE may receive a wakeup signal during a monitoring occasion for wakeup signals. The operations of1410may be performed according to the methods described herein. In some examples, aspects of the operations of1410may be performed by a wakeup component as described with reference toFIGS. 6 through 9.

At1415, the UE may determine that the received wakeup signal indicates a group in a wakeup grouping set of the wakeup grouping sets, where the group includes the UE. The operations of1415may be performed according to the methods described herein. In some examples, aspects of the operations of1415may be performed by a wakeup component as described with reference toFIGS. 6 through 9.

At1420, the UE may initiate a wakeup procedure for the UE based on the determining. The operations of1420may be performed according to the methods described herein. In some examples, aspects of the operations of1420may be performed by a wakeup component as described with reference toFIGS. 6 through 9.

At1505, the UE may receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. The operations of1505may be performed according to the methods described herein. In some examples, aspects of the operations of1505may be performed by a signaling component as described with reference toFIGS. 6 through 9.

At1510, the UE may receive a wakeup signal during a monitoring occasion for wakeup signals. The operations of1510may be performed according to the methods described herein. In some examples, aspects of the operations of1510may be performed by a wakeup component as described with reference toFIGS. 6 through 9.

At1515, the UE may identify a hopping pattern for the set of wakeup grouping sets. The operations of1515may be performed according to the methods described herein. In some examples, aspects of the operations of1515may be performed by a pattern component as described with reference toFIGS. 6 through 9.

At1520, the UE may determine the wakeup grouping set for the monitoring occasion according to the identified hopping pattern. The operations of1520may be performed according to the methods described herein. In some examples, aspects of the operations of1520may be performed by a pattern component as described with reference toFIGS. 6 through 9.

At1525, the UE may initiate a wakeup procedure for the UE based on the determining. The operations of1525may be performed according to the methods described herein. In some examples, aspects of the operations of1525may be performed by a wakeup component as described with reference toFIGS. 6 through 9.

FIG. 16shows a flowchart illustrating a method1600that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The operations of method1600may be implemented by a UE115or its components as described herein. For example, the operations of method1600may be performed by a communications manager as described with reference toFIGS. 6 through 9. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.

At1605, the UE may receive signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. The operations of1605may be performed according to the methods described herein. In some examples, aspects of the operations of1605may be performed by a signaling component as described with reference toFIGS. 6 through 9.

At1610, the UE may receive a wakeup signal during a monitoring occasion for wakeup signals. The operations of1610may be performed according to the methods described herein. In some examples, aspects of the operations of1610may be performed by a wakeup component as described with reference toFIGS. 6 through 9.

At1615, the UE may attempt to decode the received wakeup signal according to a set of decoding hypotheses that correspond to the set of wakeup grouping sets. The operations of1615may be performed according to the methods described herein. In some examples, aspects of the operations of1615may be performed by a decoding component as described with reference toFIGS. 6 through 9.

At1620, the UE may determine a successful decoding hypothesis of the set of decoding hypotheses. The operations of1620may be performed according to the methods described herein. In some examples, aspects of the operations of1620may be performed by a decoding component as described with reference toFIGS. 6 through 9.

At1625, the UE may identify the wakeup grouping set as corresponding to the successful decoding hypothesis. The operations of1625may be performed according to the methods described herein. In some examples, aspects of the operations of1625may be performed by a decoding component as described with reference toFIGS. 6 through 9.

At1630, the UE may initiate a wakeup procedure for the UE based on the determining. The operations of1630may be performed according to the methods described herein. In some examples, aspects of the operations of1630may be performed by a wakeup component as described with reference toFIGS. 6 through 9.

FIG. 17shows a flowchart illustrating a method1700that supports wakeup grouping for DRX operation in accordance with aspects of the present disclosure. The operations of method1700may be implemented by a base station105or its components as described herein. For example, the operations of method1700may be performed by a communications manager as described with reference toFIGS. 10 through 13. In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.

At1705, the base station may transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. The operations of1705may be performed according to the methods described herein. In some examples, aspects of the operations of1705may be performed by a signaling component as described with reference toFIGS. 10 through 13.

At1710, the base station may determine, for a monitoring occasion, a wakeup grouping set of the set of wakeup grouping sets, the determined wakeup grouping set including a group that includes the UE. The operations of1710may be performed according to the methods described herein. In some examples, aspects of the operations of1710may be performed by a wakeup component as described with reference toFIGS. 10 through 13.

At1715, the base station may transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set. The operations of1715may be performed according to the methods described herein. In some examples, aspects of the operations of1715may be performed by a wakeup component as described with reference toFIGS. 10 through 13.

At1805, the base station may transmit, to a UE, signaling configuring the UE with a set of wakeup grouping sets, each of the set of wakeup grouping sets identifying a set of groups of one or more UEs. The operations of1805may be performed according to the methods described herein. In some examples, aspects of the operations of1805may be performed by a signaling component as described with reference toFIGS. 10 through 13.

At1810, the base station may identify a hopping pattern for the set of wakeup grouping sets. The operations of1810may be performed according to the methods described herein. In some examples, aspects of the operations of1810may be performed by a pattern component as described with reference toFIGS. 10 through 13.

At1815, the base station may determine the wakeup grouping set for the monitoring occasion according to the identified hopping pattern. The operations of1815may be performed according to the methods described herein. In some examples, aspects of the operations of1815may be performed by a pattern component as described with reference toFIGS. 10 through 13.

At1820, the base station may transmit, during the monitoring occasion, a wakeup signal for the group according to the determined wakeup grouping set. The operations of1820may be performed according to the methods described herein. In some examples, aspects of the operations of1820may be performed by a wakeup component as described with reference toFIGS. 10 through 13.