Patent Description:
Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for deactivating resources for repetitions of periodic communications.

<NPL> discloses functionalities for enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC) with regard to channel reliability from single and multilink reliability perspective. Specifically, the omission of redundant transmissions is proposed.

<NPL> discloses Downlink Control Information (DCI) enhancements for URLLC and performance evaluation of DCI with different payload size and aggregation level.

Preferred embodiments are defined by the subject-matter of the dependent claims.

Controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform one or more techniques associated with deactivating resources for repetition of periodic communications, as described in more detail elsewhere herein. For example, controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform or direct operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein. Memories <NUM> and <NUM> may store data and program codes for base station <NUM> and UE <NUM>, respectively. In some aspects, memory <NUM> and/or memory <NUM> may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station <NUM> and/or the UE <NUM>, may perform or direction operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein.

In some aspects, UE <NUM> may include means for receiving, from a base station, a configuration for periodic communications (e.g., using antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like); means for determining that the UE <NUM> has successfully received a respective initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications (e.g., using controller/processor <NUM>, memory <NUM>, and/or the like); means for deactivating repetitions in one or more transmission cycles based at least in part on the determination (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like); and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>, such as controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like.

In some aspects, base station <NUM> may include means for transmitting, to a UE, a configuration for periodic communications (e.g., using controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like); means for determining that the base station <NUM> has received a respective acknowledgement of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications (e.g., using controller/processor <NUM>, memory <NUM>, and/or the like); means for deactivating repetitions in one or more transmission cycles based at least in part on the determination (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like); and/or the like. In some aspects, such means may include one or more components of base station <NUM> described in connection with <FIG>, such as antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like.

In some aspects, a wireless communication device (e.g., UE <NUM>, base station <NUM>, and/or the like) may include means for determining that the wireless communication device has successfully received a respective initial transmission in each transmission cycle of a threshold number of transmission cycles associated with periodic communications (e.g., using controller/processor <NUM>, memory <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like); means for deactivating repetitions in one or more transmission cycles based at least in part on the determination (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like); and/or the like. Additionally, or alternatively, the wireless communication device may include means for determining that the wireless communication device has received a respective acknowledgement of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with periodic communications (e.g., using controller/processor <NUM>, memory <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like); means for deactivating repetitions in one or more transmission cycles based at least in part on the determination (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like); and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>, such as controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like. In some aspects, such means may include one or more components of base station <NUM> described in connection with <FIG>, such as antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like.

<FIG> is a diagram illustrating an example <NUM> of using beams for periodic communications, in accordance with various aspects of the present disclosure.

As shown in <FIG>, a UE <NUM> and a base station <NUM> may communicate using beamformed transmissions. For example, the base station <NUM> may directionally transmit and/or monitor using one or more beams <NUM> (shown as beams <NUM>-A, <NUM>-B, and <NUM>-C), and the UE <NUM> may directionally transmit and/or monitor using one or more beams <NUM> (shown as beams <NUM>-A, <NUM>-B, and <NUM>-C). A downlink beam may be used for communications from the base station <NUM> to the UE <NUM>, and an uplink beam may be used for communications from the UE <NUM> to the base station <NUM>. A beam may include a transmit beam, a receive beam, and/or the like.

The base station <NUM> and the UE <NUM> may support configurations for periodic communications, such as semi-persistent scheduling (SPS) communications, configured grant (CG) communications, and/or the like. For SPS communications, the base station <NUM> and the UE <NUM> may be configured with periodic resources (e.g., time resources, frequency resources, spatial resources, and/or the like) for downlink transmissions. The resources may be configured in a radio resource control (RRC) message or a similar type of message that includes an SPS configuration. In this case, the base station <NUM> does not need to transmit a downlink grant (e.g., in downlink control information (DCI), a physical downlink control channel (PDCCH), and/or the like) to allocate resources to the UE <NUM> for downlink transmissions (e.g., initial downlink transmissions), thereby reducing latency and conserving network resources. In some aspects, downlink grants may be used for repetitions in SPS.

For CG communications, a base station <NUM> and a UE <NUM> may be configured with periodic resources for uplink transmissions. Similar to SPS communications, the resources may be configured in an RRC message or a similar type of message that includes a CG configuration. In this case, the UE <NUM> does not need to request and the base station <NUM> does not need to transmit an uplink grant (e.g., in DCI, a PDCCH, and/or the like) to allocate resources to the UE <NUM> for uplink transmissions, thereby reducing latency and conserving network resources. In some aspects, uplink grants may be used for repetitions in CG.

As shown in <FIG>, a wireless communication device (e.g., a base station <NUM>, a UE <NUM>, and/or the like) is configured with periodic resources based at least in part on a recurring transmission cycle <NUM>, shown as a first transmission cycle <NUM>-A and a second transmission cycle <NUM>-B. The duration and timing of a transmission cycle may be configured according to a periodic communication configuration, such as an SPS configuration, a CG configuration, and/or the like. For example, a transmission cycle duration may correspond to a periodicity of an SPS configuration, a CG configuration, and/or the like.

As further shown, a transmission cycle <NUM> may include a first time period <NUM> and a second time period <NUM>. The first time period is referred to as an initial transmission window. The second time period is referred to as a repetition window. The base station <NUM> (e.g., for SPS) or the UE <NUM> (e.g., for CG) transmits an initial transmission in the first time period <NUM> of the transmission cycle <NUM>, and the base station <NUM> (e.g., for SPS) or the UE <NUM> (e.g., for CG) transmits one or more repetitions in the second time period <NUM> of the transmission cycle <NUM>. In some cases, the one or more repetitions may be transmitted regardless of whether the initial transmission was successful (e.g., to improve reliability using repetitions of the initial transmission). In other cases, the one or more repetitions may be transmitted only if the initial transmission was not successful (e.g., if a negative acknowledgement (NACK) is transmitted or received for the initial transmission). The initial transmission window and the repetition window may occur in a transmission cycle <NUM> (e.g., transmission cycle <NUM>-A) prior to occurrence of a next consecutive transmission cycle <NUM> (e.g., transmission cycle <NUM>-B). In some aspects, initial transmissions in an initial transmission window may be scheduled in an RRC message (e.g., according to an SPS configuration and/or a CG configuration), without using DCI to schedule the initial transmissions (although activation DCI may be used to activate or deactivate the initial transmissions). In some aspects, repetitions in a repetition window may be scheduled using DCI. In some aspects, repetitions may be referred to as retransmissions.

For example, using SPS, the base station <NUM> may transmit a periodic downlink communication, such as a physical downlink shared channel (PDSCH) communication <NUM>, to the UE <NUM> within a first time period <NUM> of a first transmission cycle <NUM>-A, as shown. If the PDSCH communication <NUM> fails, then the base station <NUM> may repeat (e.g., retransmit) the PDSCH communication, shown as a repetition <NUM>, in the second time period <NUM> of a first transmission cycle <NUM>-A, as shown. In some aspects, the UE <NUM> may transmit (and the base station <NUM> may receive) a NACK <NUM>, corresponding to the PDSCH communication <NUM>, to indicate that the PDSCH communication <NUM> has failed. Alternatively, the UE <NUM> may not transmit an acknowledgement (ACK) or a NACK (e.g., may refrain from transmitting ACK or NACK (ACK/NACK) feedback) corresponding to the PDSCH communication <NUM>, thereby indicating that the PDSCH communication <NUM> has failed.

As another example, using CG, the UE <NUM> may transmit a periodic uplink communication, such as a physical uplink shared channel (PUSCH) communication (not shown), to the base station <NUM> within a first time period <NUM> of a first transmission cycle <NUM>-A. If the PUSCH communication fails, then the UE <NUM> may repeat (e.g., retransmit) the PUSCH communication (e.g., a repetition, sometimes referred to as a retransmission) in the second time period <NUM> of the first transmission cycle <NUM>-A. In some aspects, the base station <NUM> may transmit (and the UE <NUM> may receive) a NACK, corresponding to the PUSCH communication, to indicate that the PUSCH communication has failed. Alternatively, the base station <NUM> may not transmit an ACK or a NACK (e.g., may refrain from transmitting ACK/NACK feedback) corresponding to the PUSCH communication, indicating that the PUSCH communication has failed.

In some aspects, periodic communications, such as SPS communications and/or CG communications, may be transmitted or received using beamforming. For example, the base station <NUM> may transmit a PDSCH communication to the UE <NUM> using a first beam <NUM>-B, and the UE <NUM> may monitor for the transmission using a corresponding first beam <NUM>-B. In some cases, a beam (or beam pair) used for periodic communications may be updated. For example, if a periodic transmission from the base station <NUM> using the first beam <NUM>-B fails, then the active beam used for downlink periodic transmissions may be updated to another beam, such as a second beam <NUM>-A. The second beam <NUM>-A may have a stronger signal strength at the UE <NUM> than the first beam <NUM>-B.

<FIG> is a diagram illustrating an example <NUM> of using beams for periodic communications, in accordance with various aspects of the present disclosure. As shown in <FIG>, a base station <NUM> and a UE <NUM> may communicate with one another.

As described above in connection with <FIG>, the base station <NUM> and the UE <NUM> may support periodic communications (e.g., SPS communications, CG communications, and/or the like), and may be configured with periodic resources for the periodic communications. The periodic resources are configured in recurring transmission cycles as described above in connection with <FIG>, shown in <FIG> as a first cycle <NUM> and a second cycle <NUM>. A transmission cycle may include a first time period, shown as an initial transmission window <NUM>, and a second time period, shown as a repetition window <NUM>. The base station <NUM> (e.g., for SPS) or the UE <NUM> (e.g., for CG) may transmit an initial transmission in the initial transmission window <NUM> of a transmission cycle, and the base station <NUM> (e.g., for SPS) or the UE <NUM> (e.g., for CG) may transmit one or more repetitions in the repetition window <NUM> of the transmission cycle. In some aspects, multiple repetitions may be transmitted in the repetition window <NUM> using multiple beams (e.g., one repetition on each beam), such as by employing beam-sweeping.

As shown by reference number <NUM>, using SPS, the base station <NUM> may transmit an initial PDSCH communication to the UE <NUM> within the initial transmission window <NUM> of the first cycle <NUM>. As shown by reference number <NUM>, the base station <NUM> may transmit, and the UE <NUM> may receive, the initial PDSCH communication using a first beam. The first beam may include a downlink transmit (TX) beam of the base station <NUM> and/or a corresponding downlink receive (RX) beam of the UE <NUM>. In some aspects, the first beam may be included in a set of beams configured as candidates for communication between the UE <NUM> and the base station <NUM>.

As shown by reference number <NUM>, the UE <NUM> may indicate, to the base station <NUM>, whether the initial PDSCH communication has succeeded or has failed. In some aspects, the UE <NUM> may indicate that the initial PDSCH communication has succeeded by transmitting an acknowledgement (ACK) corresponding to the initial PDSCH communication. In some aspects, the UE <NUM> may indicate that the initial PDSCH communication has failed by transmitting a NACK corresponding to the initial PDSCH communication. For example, as shown by reference number <NUM>, the UE <NUM> may transmit an ACK or a NACK (shown as ACK/NACK, sometimes referred to as ACK/NACK feedback) in a PUSCH communication. In this case, the base station <NUM> may determine that the initial PDSCH communication has failed based at least in part on receiving a NACK, or may determine that the initial PDSCH communication has succeeded based at least in part on receiving an ACK. In some aspects, the UE <NUM> may indicate that the initial PDSCH communication has failed by refraining from transmitting ACK/NACK feedback corresponding to the initial PDSCH communication. In this case, the base station <NUM> may determine that the initial PDSCH communication has failed based at least in part on failing to receive ACK/NACK feedback corresponding to the initial PDSCH communication.

As shown by reference number <NUM>, the base station <NUM> may repeat (e.g., retransmit) the initial PDSCH communication on a set of beams, shown as Beam X and Beam Y. For example, the base station <NUM> may repeat (e.g., retransmit) the PDSCH communication (e.g., using beam-sweeping) on a set of beams configured as candidates for communication between the UE <NUM> and the base station <NUM>. As shown, the repetitions may occur in the repetition window <NUM> of the first cycle <NUM>. In some aspects, resources for periodic communications in the initial transmission window <NUM> may be allocated using a configuration (e.g., in an RRC message) without using DCI. In some aspects, resources for repetitions of periodic communications may be allocated using DCI, such as DCI carried in a PDCCH.

The repetitions during the repetition window <NUM> may assist the UE <NUM> with receiving the PDSCH communication. For example, if the initial PDSCH communication failed, then the repetitions may enable the UE <NUM> to receive the PDSCH communication despite failure of the initial PDSCH communication. If the initial PDSCH communication was successful, then the UE <NUM> may combine one or more repetitions with the initial PDSCH communication to improve decoding accuracy. This may assist with satisfying a requirement associated with the PDSCH communication, such as a latency requirement, a reliability requirement, and/or the like. For example, the PDSCH communication may be an ultra-reliable low latency communication (URLLC), and the repetitions (sometimes referred to as retransmissions) during the repetition window <NUM> may assist with satisfying stringent URLLC requirements.

However, in some cases, if the UE <NUM> successfully receives the initial PDSCH communication, then the repetitions may waste resources despite providing improved reliability. For example, the repetitions may consume network resources (e.g., time, frequency, and/or spatial resources) that could be used for other communications, may consume resources of the base station <NUM> used to process and transmit the repetitions (e.g., memory resources, processor resources, and/or the like), may consume resources of the UE <NUM> used to receive and process the repetitions (e.g., memory resources, processor resources, and/or the like), and/or the like. Some techniques and apparatuses described herein conserve network resources, base station resources, UE resources, and/or the like by deactivating repetitions in certain scenarios, such as when the UE <NUM> successfully receives one or more initial transmissions.

<FIG> is a diagram illustrating an example <NUM> of deactivating resources for repetition of periodic communications, in accordance with various aspects of the present disclosure. As shown in <FIG>, a base station <NUM> and a UE <NUM> may communicate with one another.

As described above in connection with <FIG> and <FIG>, the base station <NUM> and the UE <NUM> may support periodic communications (e.g., SPS communications, CG communications, and/or the like), and may be configured with periodic resources for the periodic communications. The periodic resources are configured in recurring transmission cycles as described above in connection with <FIG> and <FIG>, shown in <FIG> as Cycle X and Cycle X+<NUM>. A transmission cycle may include a first time period, shown as an initial transmission window, and a second time period, shown as a repetition window. The base station <NUM> (e.g., for SPS) or the UE <NUM> (e.g., for CG) may transmit an initial transmission in the initial transmission window of a transmission cycle, and the base station <NUM> (e.g., for SPS) or the UE <NUM> (e.g., for CG) may transmit one or more repetitions in the repetition window of the transmission cycle. In some aspects, multiple repetitions may be transmitted in the repetition window using multiple beams (e.g., one repetition on each beam), such as by employing beam-sweeping. In some aspects, the repetitions may be transmitted via multi-beam transmission (e.g., beam-sweeping).

In some aspects, the base station <NUM> may transmit, to the UE <NUM>, a configuration for periodic communications, such as SPS communications, CG communications, and/or the like. The periodic communications may include uplink communications and/or downlink communications. The configuration may indicate a set of resources for the periodic communications (e.g., time resources, frequency resources, spatial resources, and/or the like), a periodicity of the periodic communications, and/or the like. In some aspects, the configuration may be indicated in an RRC message, activation DCI, and/or the like. In some aspects, a duration, a timing, and/or a periodicity of a transmission cycle may be based at least in part on the configuration. For example, a transmission cycle duration may correspond to a periodicity of an SPS configuration, a CG configuration, and/or the like.

As shown by reference number <NUM>, using SPS, the base station <NUM> may transmit an initial PDSCH communication to the UE <NUM> within the initial transmission window of the Cycle X. As shown by reference number <NUM>, the base station <NUM> may transmit, and the UE <NUM> may receive, the initial PDSCH communication using a first beam. The first beam may include a downlink TX beam of the base station <NUM> and/or a corresponding downlink RX beam of the UE <NUM>. In some aspects, the first beam may be included in a set of beams configured as candidates for communication between the UE <NUM> and the base station <NUM>.

As shown by reference number <NUM>, the UE <NUM> may successfully receive the initial PDSCH communication, and may determine that a deactivation condition is satisfied. For example, the UE <NUM> may determine that the deactivation condition is satisfied based at least in part on determining that the UE <NUM> has successfully received initial transmissions (e.g., respective initial transmissions) in each transmission cycle of a threshold number (shown as N) of transmission cycles. As such, the UE <NUM> determines that the deactivation condition is satisfied based at least in part on determining that the UE <NUM> has successfully received initial transmissions in Cycle X as well as N-<NUM> cycles prior to Cycle X. In some aspects, Cycle X and the N-<NUM> cycles may be consecutive cycles for more robustness. However, in some aspects, Cycle X and the N-<NUM> cycles may be non-consecutive. As an example, if the threshold number of cycles is one, then the UE <NUM> may determine that the UE <NUM> successfully received an initial transmission in an initial transmission window of Cycle X. As another example, if the threshold number of cycles is two, then the UE <NUM> determines that the UE <NUM> successfully received an initial transmission in an initial transmission window of Cycle X-<NUM> (e.g., a transmission cycle prior to Cycle X) and that the UE <NUM> successfully received an initial transmission in an initial transmission window of Cycle X.

In some aspects, the threshold number is one. In some aspects, the threshold number is greater than one. In some aspects, the threshold number is indicated in the configuration for periodic communications. In some aspects, the threshold number of transmission cycles includes multiple consecutive transmission cycles. In some aspects, one or more transmission cycles in the threshold number of transmission cycles are non-consecutive. In some aspects, the threshold number depends on a mobility associated with the UE <NUM> (e.g., a higher threshold number for a higher level of mobility, and/or a lower threshold number for a lower level of mobility), a coherence time or stability of a channel used for communication between the UE <NUM> and the base station <NUM> (e.g., a higher threshold number for a higher coherence time or lower stability, and/or a lower threshold number for a lower coherence time or higher stability), and/or the like.

As shown by reference number <NUM>, the UE <NUM> may indicate that the initial PDSCH communication has succeeded by transmitting an ACK corresponding to the initial PDSCH communication to the base station <NUM>. For example, as shown by reference number <NUM>, the UE <NUM> may transmit the ACK in a PUSCH communication. In some aspects, one or more resources for the PUSCH communication may be configured according to a configuration for periodic communications. In this case, the base station <NUM> may determine that the initial PDSCH communication has succeeded based at least in part on receiving an ACK. The UE <NUM> may determine that the deactivation condition is satisfied based at least in part on determining that the UE <NUM> has transmitted a threshold number of ACKs for respective initial transmissions in each transmission cycle of the threshold number of transmission cycles. As an example, if the threshold number of cycles is one, then the UE <NUM> may determine that the UE <NUM> transmitted an ACK of an initial transmission in an initial transmission window of Cycle X. As another example, if the threshold number of cycles is two, then the UE <NUM> determines that the UE <NUM> transmitted an ACK of an initial transmission in an initial transmission window of Cycle X-<NUM> (e.g., a transmission cycle prior to Cycle X) and that the UE <NUM> transmitted an ACK of an initial transmission in an initial transmission window of Cycle X.

Additionally, or alternatively, the UE <NUM> may determine that the deactivation condition is satisfied based at least in part on determining that a link quality between the UE <NUM> and the base station <NUM> satisfies a threshold. For example, the UE <NUM> may determine that a measured reference signal receive power (RSRP) parameter, a measure reference signal received quality (RSRQ) parameter, a signal-to-interference-plus-noise ratio (SINR) parameter, and/or the like, satisfies the threshold.

As shown by reference number <NUM>, the UE <NUM> may deactivate repetitions in one or more transmission cycles based at least in part on determining that the deactivation condition is satisfied. For example, the UE <NUM> may deactivate repetitions by refraining from monitoring for repetitions. In some aspects, the UE <NUM> may deactivate repetitions starting in a repetition window of the same transmission cycle in which the UE <NUM> determined that the deactivation condition is satisfied (e.g., starting in Cycle X in <FIG>, as shown). In some aspects, the UE <NUM> may deactivate repetitions starting in a subsequent transmission cycle (e.g., Cycle X + <NUM>, Cycle X+<NUM>, and/or the like) after the transmission cycle in which the UE <NUM> determined that the deactivation condition is satisfied, such as when the UE <NUM> does not have sufficient time to determine that the deactivation condition is satisfied before deactivating the repetitions. For example, the UE <NUM> may deactivate repetitions starting in a next consecutive transmission cycle (e.g., starting in Cycle X+<NUM> in <FIG>). The repetitions may include one or more PDCCH communications (e.g., DCI that schedules one or more PDSCH repetitions) and/or one or more PDSCH communications.

In some aspects, repetitions that occur at the same time as an initial transmission may be deactivated (e.g., at the same time but on a different frequency resource, a different beam, and/or the like). In this case, repetitions in an initial transmission window may be deactivated (or the concept of a separate initial transmission window and a repetition window may not apply). Additionally, or alternatively, repetitions that occur at a different time (e.g., later than) an initial transmission may be deactivated. In this case, repetitions in a repetition window may be deactivated. Additionally, or alternatively, repetitions that occur using beam-sweeping may be deactivated.

As shown by reference number <NUM>, the base station <NUM> may deactivate repetitions in one or more transmission cycles based at least in part on determining that the deactivation condition is satisfied. For example, the base station <NUM> may deactivate repetitions by refraining from transmitting repetitions. In some aspects, the base station <NUM> may deactivate repetitions starting in a repetition window of the same transmission cycle in which the base station <NUM> determined that the deactivation condition is satisfied (e.g., starting in Cycle X in <FIG>, as shown). In some aspects, the base station <NUM> may deactivate repetitions starting in a subsequent transmission cycle (e.g., Cycle X+<NUM>, Cycle X+<NUM>, and/or the like) after the transmission cycle in which the base station <NUM> determined that the deactivation condition is satisfied, such as when the base station <NUM> does not have sufficient time to determine that the deactivation condition is satisfied before deactivating the repetitions. For example, the base station <NUM> may deactivate repetitions starting in a next consecutive transmission cycle (e.g., starting in Cycle X+<NUM> in <FIG>).

In some aspects, the deactivation condition for the base station <NUM> may include determining that the base station <NUM> has received a respective ACK of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications, in a similar manner as described above in connection with the UE <NUM>. Additionally, or alternatively, the base station <NUM> may determine that the deactivation condition is satisfied based at least in part on determining that a link quality between the UE <NUM> and the base station <NUM> satisfies a threshold. As indicated above, the link quality may be represented by an RSRP parameter, an RSRQ parameter, a SINR parameter, and/or the like. One or more of these parameters may be measured by the UE <NUM> and/or the base station <NUM>, and/or may be signaled between the UE <NUM> and the base station <NUM>.

In some aspects, the UE <NUM> may determine that the deactivation condition is satisfied and may transmit, to the base station <NUM>, a request to deactivate repetitions. The request may be transmitted in uplink control information (UCI), a media access control (MAC) control element (CE) (MAC-CE), an RRC message, and/or the like. In this case, the base station <NUM> may determine that the deactivation condition is satisfied based at least in part on receiving the request.

In some aspects, the base station <NUM> may determine that the deactivation condition is satisfied and may transmit, to the UE <NUM>, an instruction to deactivate (e.g., to refrain from monitoring for) the repetitions. The instruction may be transmitted in DCI, a MAC-CE, an RRC message, and/or the like. In this case, the UE <NUM> may determine that the deactivation condition is satisfied based at least in part on receiving the instruction.

Thus, in some aspects, the base station <NUM> and the UE <NUM> may independently determine that the deactivation condition is satisfied, without requiring signaling to indicate the deactivation, thereby reducing signaling overhead. In some aspects, only the base station <NUM> may independently determine that the deactivation condition is satisfied, and may signal the UE <NUM> to deactivate repetitions, thereby conserving resources of the UE <NUM> that would otherwise be used for an independent determination. In some aspects, only the UE <NUM> may independently determine that the deactivation condition is satisfied, and may signal the base station <NUM> to deactivate repetitions, thereby conserving resources of the base station <NUM> that would otherwise be used for an independent determination.

In some aspects, the UE <NUM> may communicate with multiple base stations <NUM> (e.g., multiple transmit receive points (TRPs), such as TRPs of a single base station <NUM> or multiple base stations <NUM>). For example, the UE <NUM> may receive independent initial transmissions or joint initial transmissions from multiple base stations <NUM> in the initial transmission window. Additionally, or alternatively, the UE <NUM> may receive independent repetitions or joint repetitions from multiple base stations <NUM> in the repetition window. In these cases, upon determining that a deactivation condition is satisfied, one or more of the multiple base stations <NUM> may deactivate initial transmission and/or repetitions. For example, if the UE <NUM> was receiving initial transmissions from multiple base stations <NUM>, all but one of those base stations <NUM> may deactivate initial transmissions to conserve network resources based at least in part on a determination that the deactivation condition is satisfied. Additionally, or alternatively, all of the multiple base stations <NUM> may deactivate repetitions based at least in part on a determination that the deactivation condition is satisfied. In some aspects, one of the base stations <NUM> may instruct one or more other base stations <NUM> to deactivate initial transmissions and/or repetitions.

In some aspects, the UE <NUM> and/or the base station <NUM> may deactivate repetitions for a single transmission cycle. In some aspects, the UE <NUM> and/or the base station <NUM> may deactivate repetitions for multiple transmission cycles. In some aspects, the UE <NUM> and/or the base station <NUM> may activate (or reactivate) repetitions based at least in part on determining that an activation condition is satisfied, as described in more detail below in connection with <FIG>.

Although <FIG> shows operations associated with SPS, similar operations may occur in CG. For example, the UE <NUM> may transmit an initial PUSCH communication to the base station <NUM> within the initial transmission window of the Cycle X (e.g., on a first beam). The base station <NUM> may successfully receive the initial PUSCH communication and may determine that a deactivation condition is satisfied. For example, the base station <NUM> may determine that the deactivation condition is satisfied by determining that the base station <NUM> has successfully received initial transmissions (e.g., respective initial transmissions) in each transmission cycle of a threshold number (shown as N) of transmission cycles, in a similar manner as described above. Based at least in part on determining that the deactivation condition is satisfied, the base station <NUM> may deactivate (e.g., refrain from monitoring for) repetitions. The base station <NUM> may indicate that the initial PUSCH communication has succeeded by transmitting an ACK corresponding to the initial PUSCH communication to the UE <NUM>. The UE <NUM> may determine that the deactivation condition is satisfied, such as by determining that the UE <NUM> has received a respective ACK of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications, in a similar manner as described above. Based at least in part on determining that the deactivation condition is satisfied, the UE <NUM> may deactivate (e.g., refrain from transmitting) repetitions. By deactivating repetitions, the UE <NUM> and/or the base station <NUM> may conserve network resources, base station resources, UE resources, and/or the like.

<FIG> is a diagram illustrating an example <NUM> of activating resources for repetition of periodic communications, in accordance with various aspects of the present disclosure.

In the example depicted in <FIG>, the UE <NUM> and the base station <NUM> have deactivated repetitions starting in Cycle X and continuing in Cycle X + <NUM>, as described above in connection with <FIG>. As shown by reference number <NUM>, using SPS, the base station <NUM> may transmit an initial PDSCH communication (e.g., on a first beam) to the UE <NUM> within the initial transmission window of Cycle X+<NUM> (e.g., a next consecutive cycle after cycle X+<NUM>).

As shown by reference number <NUM>, the UE <NUM> may determine that the initial PDSCH communication was not successfully received, and may determine that an activation condition is satisfied. For example, the UE <NUM> may determine that the activation condition is satisfied based at least in part on determining that the initial PDSCH communication was not successfully received. The determination that the activation condition is satisfied may be a subsequent determination that occurs after deactivating the repetitions, such as according to deactivating repetitions as described above in connection with <FIG>.

As shown by reference number <NUM>, the UE <NUM> may indicate that the initial PDSCH communication has failed. In some aspects, the UE <NUM> may indicate that the initial PDSCH communication has failed by transmitting a NACK corresponding to the initial PDSCH communication. For example, as shown by reference number <NUM>, the UE <NUM> may transmit a NACK in a PUSCH communication. In this case, the base station <NUM> may determine that the initial PDSCH communication has failed based at least in part on receiving the NACK. In some aspects, the UE <NUM> may indicate that the initial PDSCH communication has failed by refraining from transmitting ACK/NACK feedback corresponding to the initial PDSCH communication (shown as discontinuous transmission or DTX). In this case, the base station <NUM> may determine that the initial PDSCH communication has failed based at least in part on failing to receive ACK/NACK feedback corresponding to the initial PDSCH communication.

As shown by reference number <NUM>, the UE <NUM> may activate (e.g., reactivate) repetitions in one or more transmission cycles based at least in part on determining that the activation condition is satisfied. For example, the UE <NUM> may activate repetitions (e.g., via multi-beam transmission) by monitoring for repetitions. In some aspects, the one or more transmission cycles in which the repetitions are activated (e.g., Cycle X+<NUM>) may be subsequent to one or more transmission cycles in which the repetitions were deactivated (e.g., Cycle X and Cycle X+<NUM>). In some aspects, the UE <NUM> may activate repetitions starting in a repetition window of the same transmission cycle in which the UE <NUM> determined that the activation condition is satisfied (e.g., starting in Cycle X+<NUM> in <FIG>, as shown). In some aspects, the UE <NUM> may activate repetitions starting in a subsequent transmission cycle (e.g., Cycle X+<NUM>, Cycle X+<NUM>, and/or the like) after the transmission cycle in which the UE <NUM> determined that the activation condition is satisfied, such as when the UE <NUM> does not have sufficient time to determine that the activation condition is satisfied before activating the repetitions. For example, the UE <NUM> may activate repetitions starting in a next consecutive transmission cycle (e.g., starting in Cycle X+<NUM> in <FIG>).

As shown by reference number <NUM>, the base station <NUM> may activate repetitions in one or more transmission cycles based at least in part on determining that the activation condition is satisfied. For example, the base station <NUM> may activate repetitions by transmitting repetitions. In some aspects, the base station <NUM> may activate repetitions starting in a repetition window of the same transmission cycle in which the base station <NUM> determined that the activation condition is satisfied, or in a later transmission cycle, as described above. In some aspects, the activation condition may include determining that the base station <NUM> has received a NACK of an initial transmission.

Additionally, or alternatively, the activation condition for the UE <NUM> and/or the base station <NUM> may include determining that a threshold amount of time has elapsed after deactivating repetitions. In some aspects, the threshold amount of time may correspond to a number of transmission cycles (e.g., one transmission cycle, two transmission cycles, three transmission cycles, and so on). Additionally, or alternatively, the activation condition may include determining that a link quality between the UE <NUM> and the base station <NUM> does not satisfy a threshold.

In some aspects, the UE <NUM> may determine that the activation condition is satisfied and may transmit, to the base station <NUM>, a request to activate repetitions. The request may be transmitted in UCI, a MAC-CE, an RRC message, and/or the like. In this case, the base station <NUM> may determine that the activation condition is satisfied based at least in part on receiving the request.

In some aspects, the base station <NUM> may determine that the activation condition is satisfied and may transmit, to the UE <NUM>, an instruction to activate (e.g., to monitoring for) the repetitions. The instruction may be transmitted in DCI, a MAC-CE, an RRC message, and/or the like. In this case, the UE <NUM> may determine that the activation condition is satisfied based at least in part on receiving the instruction.

Thus, in some aspects, the base station <NUM> and the UE <NUM> may independently determine that the activation condition is satisfied, without requiring signaling to indicate the activation, thereby reducing signaling overhead. In some aspects, only the base station <NUM> may independently determine that the activation condition is satisfied, and may signal the UE <NUM> to activate repetitions, thereby conserving resources of the UE <NUM> that would otherwise be used for an independent determination. In some aspects, only the UE <NUM> may independently determine that the activation condition is satisfied, and may signal the base station <NUM> to activate repetitions, thereby conserving resources of the base station <NUM> that would otherwise be used for an independent determination.

Although <FIG> shows operations associated with SPS, similar operations may occur in CG. For example, the UE <NUM> may transmit an initial PUSCH communication to the base station <NUM> within the initial transmission window of the Cycle X+<NUM> (e.g., on a first beam). The base station <NUM> may fail to receive or decode the initial PUSCH communication, and may determine that an activation condition is satisfied. For example, the base station <NUM> may determine that the activation condition is satisfied by determining that the base station <NUM> has not successfully received the initial PUSCH communication. Based at least in part on determining that the activation condition is satisfied, the base station <NUM> may activate (e.g., monitor for) repetitions. The base station <NUM> may indicate that the initial PUSCH communication has failed by transmitting a NACK corresponding to the initial PUSCH communication or by refraining from transmitting ACK/NACK feedback corresponding to the initial PUSCH communication. The UE <NUM> may determine that the activation condition is satisfied, such as by determining that the UE <NUM> has received a NACK of the initial PUSCH transmission, in a similar manner as described above. Based at least in part on determining that the activation condition is satisfied, the UE <NUM> may activate (e.g., transmit) repetitions. By activating repetitions, the UE <NUM> and/or the base station <NUM> may improve reliability when an initial transmission fails.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a UE (e.g., UE <NUM> and/or the like) performs operations associated with deactivating resources for repetition of periodic communications.

As shown in <FIG>, in some aspects, process <NUM> may include receiving, from a base station, a configuration for periodic communications (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive, from a base station, a configuration for periodic communications, as described above in connection with <FIG> and/or <FIG>.

As further shown in <FIG>, in some aspects, process <NUM> may include determining that the UE has successfully received a respective initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications (block <NUM>). For example, the UE (e.g., using controller/processor <NUM>, memory <NUM>, and/or the like) may determine that the UE has successfully received a respective initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications, as described above in connection with <FIG> and/or <FIG>.

As further shown in <FIG>, in some aspects, process <NUM> may include deactivating repetitions in one or more transmission cycles based at least in part on the determination (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may deactivate repetitions in one or more transmission cycles based at least in part on the determination, as described above in connection with <FIG> and/or <FIG>.

In a first aspect, each transmission cycle includes a first time period for an initial transmission and a second time period for a set of repetitions that are transmitted using a corresponding set of beams.

In a second aspect, alone or in combination with the first aspect, the threshold number is greater than one.

In a third aspect, alone or in combination with one or more of the first and second aspects, the threshold number of transmission cycles includes multiple consecutive transmission cycles.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, determining that the UE has successfully received the respective initial transmission in each transmission cycle of the threshold number of transmission cycles comprises determining that the UE has transmitted a threshold number of acknowledgements for the respective initial transmissions.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, deactivating the repetitions comprises refraining from monitoring for the repetitions in the one or more transmission cycles.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, process <NUM> includes transmitting, to the base station, a request to deactivate the repetitions.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the request is transmitted in uplink control information, a media access control (MAC) control element (CE), a radio resource control (RRC) message, or a combination thereof.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, each respective initial transmission is a respective physical downlink shared channel (PDSCH) communication, and the repetitions include one or more PDSCH communications and one or more physical downlink control channel (PDCCH) communications.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, process <NUM> includes determining that a link quality of a link between the UE and the base station satisfies a threshold; and deactivating the repetitions based at least in part on determining that the link quality satisfies the threshold.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the configuration indicates the threshold number.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the threshold number is based at least in part on mobility associated with the UE, a coherence time of a channel used for communication between the UE and the base station, or a combination thereof.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, process <NUM> includes determining that a threshold amount of time has elapsed after deactivating the repetitions; and activating repetitions in a transmission cycle, subsequent to the one or more transmission cycles, based at least in part on determining that the threshold amount of time has elapsed.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, process <NUM> includes determining that an initial transmission from the base station has not been successfully received; and activating repetitions in a transmission cycle, subsequent to the one or more transmission cycles, based at least in part on determining that the initial transmission from the base station has not been successfully received.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a base station, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a base station (e.g., base station <NUM> and/or the like) performs operations associated with deactivating resources for repetition of periodic communications.

As shown in <FIG>, in some aspects, process <NUM> may include transmitting, to a user equipment (UE), a configuration for periodic communications (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, to a UE, a configuration for periodic communications, as described above in connection with <FIG> and/or <FIG>.

As further shown in <FIG>, in some aspects, process <NUM> may include determining that the base station has received a respective acknowledgement of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications (block <NUM>). For example, the base station (e.g., using controller/processor <NUM>, memory <NUM>, and/or the like) may determine that the base station has received a respective acknowledgement of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with the periodic communications, as described above in connection with <FIG> and/or <FIG>.

As further shown in <FIG>, in some aspects, process <NUM> may include deactivating repetitions in one or more transmission cycles based at least in part on the determination (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may deactivate repetitions in one or more transmission cycles based at least in part on the determination, as described above in connection with <FIG> and/or <FIG>.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, deactivating the repetitions comprises refraining from transmitting the repetitions in the one or more transmission cycles.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, process <NUM> includes transmitting, to the UE, an instruction to refrain from monitoring for the repetitions.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the instruction is transmitted in downlink control information, a MAC-CE), an RRC message, or a combination thereof.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, each respective acknowledgement is for a PDSCH communication, and the repetitions include one or more PDSCH communications and one or more PDCCH communications.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, process <NUM> includes determining that a link quality of a link between the UE and the base station satisfies a threshold; and deactivating the repetitions based at least in part on determining that the link quality satisfies the threshold.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the configuration indicates the threshold number.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the threshold number is based at least in part on mobility associated with the UE, a coherence time of a channel used for communication between the UE and the base station, or a combination thereof.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, process <NUM> includes determining that a threshold amount of time has elapsed after deactivating the repetitions; and activating repetitions in a transmission cycle, subsequent to the one or more transmission cycles, based at least in part on determining that the threshold amount of time has elapsed.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, process <NUM> includes determining that an initial transmission from the base station has not been successfully received by the UE; and activating repetitions in a transmission cycle, subsequent to the one or more transmission cycles, based at least in part on determining that the initial transmission from the base station has not been successfully received by the UE.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, process <NUM> includes instructing another base station or transmit receive point to refrain from transmitting at least one of initial transmissions or repetitions to the UE in the one or more transmission cycles.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a wireless communication device, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a wireless communication device (e.g., UE <NUM>, base station <NUM>, and/or the like) performs operations associated with deactivating resources for repetition of periodic communications.

As shown in <FIG>, in some aspects, process <NUM> may include determining that the wireless communication device has successfully received a respective initial transmission in each transmission cycle of a threshold number of transmission cycles associated with periodic communications (block <NUM>). For example, the wireless communication device (e.g., using controller/processor <NUM>, memory <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may determine that the wireless communication device has successfully received a respective initial transmission in each transmission cycle of a threshold number of transmission cycles associated with periodic communications, as described above in connection with <FIG> and/or <FIG>.

As further shown in <FIG>, in some aspects, process <NUM> may include deactivating repetitions in one or more transmission cycles based at least in part on the determination (block <NUM>). For example, the wireless communication device (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may deactivate repetitions in one or more transmission cycles based at least in part on the determination, as described above in connection with <FIG> and/or <FIG>.

In some aspects, deactivating the repetitions comprises refraining from monitoring for the repetitions in the one or more transmission cycles.

As shown in <FIG>, in some aspects, process <NUM> may include determining that the wireless communication device has received a respective acknowledgement of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with periodic communications (block <NUM>). For example, the wireless communication device (e.g., using controller/processor <NUM>, memory <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may determine that the wireless communication device has received a respective acknowledgement of an initial transmission in each transmission cycle of a threshold number of transmission cycles associated with periodic communications, as described above in connection with <FIG> and/or <FIG>.

In some aspects, deactivating the repetitions comprises refraining from transmitting the repetitions in the one or more transmission cycles.

Claim 1:
A method of wireless communication performed by a user equipment, UE, (<NUM>) comprising:
Receiving (<NUM>), from a base station (<NUM>), a configuration for periodic communications, based at least in part on a recurring transmission cycle (<NUM>), wherein an initial transmission in each cycle is followed by one or more repetitions within the same transmission cycle; and
Deactivating (<NUM>) repetitions in one or more of the recurring transmission cycles (<NUM>) based at least in part on a determination that the UE (<NUM>) has successfully received the respective initial transmission in each transmission cycle (<NUM>) of a threshold number of prior transmission cycles associated with the periodic communications.