Feedback for multiple downlink transmissions

Abstract

Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may receive from a base station a downlink control message that schedules multiple downlink messages and indicates a first offset for communicating a first feedback message among multiple feedback messages that include feedback information for multiple downlink messages. The UE may additionally receive from the base station a second offset for remaining feedback messages for communicating multiple feedback messages after communicating the first feedback message. The UE may send an amount of resources equal to the first offset to the first feedback message after receiving the first downlink message. Then, the UE may send an amount of resources equal to the second offset to the remaining feedback messages after sending the first feedback message. Each feedback message may include feedback information for one downlink message.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. patent application No. 17 / 241,849, filed by HUANG et al. on April 27, 2021, entitled “FEEDBACK FOR MULTIPLE DOWNLINK TRANSMISSIONS,” which claims the benefit of U.S. provisional patent application No. 63 / 017,133, filed by HUANG et al. on April 29, 2020, entitled “FEEDBACK FOR MULTIPLE DOWNLINK TRANSMISSIONS,” which is assigned to the assignee of this article. Technical Field

[0003] The following relates generally to wireless communications, and more particularly to feedback for multiple downlink transmissions. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems that may be referred to as new radio (NR) systems. These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiple access (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication with multiple communication devices, which may be referred to as user equipment (UE) in addition.

[0005] In some wireless communication systems, a UE may receive a downlink control message from a base station that schedules communications between the base station and the UE over a plurality of data channels. Summary of the invention

[0006] The described techniques relate to improved methods, systems, devices, and apparatuses for supporting feedback for multiple downlink transmissions. In general, the described techniques provide for sending feedback from a user equipment (UE) to a base station for a set of downlink messages scheduled by a single downlink control message. Thus, the UE can implement the described techniques to provide feedback for a set of downlink messages without monitoring multiple downlink control messages from the base station, which can reduce computational complexity and improve power savings for the UE.

[0007] The base station may send a downlink control message including scheduling information for a downlink message and an offset associated with a feedback process to the UE. The offset in the downlink control message may be referred to herein as a first offset, and in some aspects may be an example of a K1 offset. In some implementations, the UE may send feedback for each of the downlink message sets in a separate feedback message. Thus, the UE may use the scheduling information of the downlink message and the first offset to determine the resources (e.g., time slot) for sending the first feedback message in the feedback message set corresponding to the downlink message set. In some other implementations, the UE may send feedback for each of the downlink message sets in a single feedback message. In such an implementation, the UE may use the scheduling information of the downlink message and the first offset to determine the resources (e.g., time slot) for sending a single feedback message, which includes feedback information for each of the downlink message sets.

[0008] A method for wireless communication at a UE is described. The method may include: receiving a downlink control message from a base station that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set corresponding to the communication downlink message set; receiving a second offset between each feedback message in the communication feedback message set from the base station; receiving a first downlink message in the downlink message set; sending a first feedback message in the feedback message set to the base station based on the first offset; and sending a second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0009] A device for wireless communication at a UE is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the device to: receive a downlink control message that schedules a downlink message set from a base station and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set corresponding to the communication downlink message set; receive a second offset between each feedback message in the communication feedback message set from the base station; receive the first downlink message in the downlink message set; send the first feedback message in the feedback message set to the base station based on the first offset; and send the second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0010] Another apparatus for wireless communication at a UE is described. The apparatus may include components for performing the following operations: receiving a downlink control message scheduling a downlink message set from a base station and indicating a first offset between a first downlink message in the communication downlink message set and a first feedback message in a communication feedback message set corresponding to the downlink message set; receiving a second offset between each feedback message in the communication feedback message set from the base station; receiving a first downlink message in the downlink message set; sending a first feedback message in the feedback message set to the base station based on the first offset; and sending a second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0011] A non-transitory computer-readable medium is described, which stores code for wireless communication at a UE. The code may include instructions executable by a processor for: receiving a downlink control message scheduling a downlink message set from a base station and indicating a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set corresponding to the communication downlink message set; receiving a second offset between each feedback message in the communication feedback message set from the base station; receiving a first downlink message in the downlink message set; sending a first feedback message in the feedback message set to the base station based on the first offset; and sending a second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining an order of a downlink message set based on receiving a downlink control message, wherein each feedback message of the feedback message set corresponds to a downlink message in the downlink message set based on the order of the downlink message set.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining the order of a downlink message set may include operations, features, components, or instructions for determining a first order of time domain resource sets for communicating the downlink message set, and determining a second order for communicating the feedback message set based on the first order of the time domain resource sets, wherein sending the first feedback message and the second feedback message may be based on determining the second order of the feedback message set.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a third order of component carrier indices within a single time domain resource in a set of time domain resources used to communicate at least a portion of a set of downlink messages, wherein determining a second order of the set of feedback messages may be based on determining the third order of the component carrier indices.

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining, based on information included in a downlink control message, time domain resources and component carrier indices associated with each downlink message in a downlink message set, wherein determining an order of the downlink message set may be based on determining the time domain resources and component carrier indices associated with each downlink message, and determining a second order for communicating feedback message sets based on determining the time domain resources and component carrier indices associated with each downlink message in the downlink message set, wherein sending a first feedback message and a second feedback message may be based on determining the second order of the feedback message set.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for scanning a set of component carrier indices within a time domain resource in a set of cross-time domain resources, wherein the set of component carrier indices includes a component carrier index associated with each downlink message in a set of downlink messages, and the set of time domain resources includes a time domain resource associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages may be based on scanning across the set of time domain resources.

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for scanning a set of time domain resources within a component carrier index in a set of component carrier indexes, wherein the set of component carrier indexes includes component carrier indexes associated with each downlink message in a set of downlink messages, and the set of time domain resources includes time domain resources associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages may be based on scanning across the set of component carrier indexes.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving a set of downlink messages from a base station over a set of component carriers based on carrier aggregation, each of the set of component carriers being associated with a component carrier index, wherein determining an order of the set of downlink messages may be based on the set of component carrier indices associated with the carrier aggregation.

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a first resource for a first downlink message and a second resource for a second downlink message, wherein receiving the first downlink message may be based on determining the first resource, and determining a third resource for a first feedback message based on the first resource and the first offset, and determining a fourth resource for the second feedback message based on the third resource and the second offset, wherein sending the first feedback message and the second feedback message may be based on determining the third resource and the fourth resource.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first resource, the second resource, the third resource, and the fourth resource include an indication of a time slot.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include an operation, feature, component, or instruction for determining a first index associated with a first feedback message based on a downlink control message, the first index indicating a first number of frequency domain resources and a second number of time domain resources used to communicate the first feedback message, wherein sending the first feedback message may be based on determining the first index, and based on determining the first index, determining a second index associated with the second feedback message, wherein sending the second feedback message may be based on determining the second index.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second index includes the first index.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving an indication of a first index associated with a first feedback message in a downlink control message from a base station, wherein determining the first index may be based on receiving the indication.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining the first index may include operations, features, components, or instructions for determining an uplink control channel index of the first feedback message based on an indication in a downlink control message and a starting control channel element (CCE) index in the downlink control message, wherein sending the first feedback message may be based on the uplink control channel index.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining resources for communicating each downlink message in a set of downlink messages based on the downlink control message, wherein receiving the first downlink message may be based on determining the resources.

[0026] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending each remaining feedback message in the set of feedback messages to the base station based on the second offset after sending the second feedback message.

[0027] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a set of downlink messages from a base station based on receiving a downlink control message.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each feedback message in the set of feedback messages may be configured to provide a hybrid automatic repeat request acknowledgment or a negative acknowledgment for a single message in the set of downlink messages.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first offset comprises a time domain resource interval between a first downlink message in the set of communication downlink messages and a first feedback message in the set of communication feedback messages.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second offset comprises a time domain resource interval between communicating each feedback message in the set of feedback messages.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first offset indicates a first number of time slots between a first time slot used to communicate a first downlink message and a second time slot used to communicate a first feedback message, and a second offset indicates a second number of time slots between a second time slot used to communicate the first feedback message and a third time slot used to communicate the second feedback message.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink control message includes downlink control information (DCI).

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second offset may be received via radio resource control (RRC) signaling.

[0034] A method for wireless communication at a UE is described. The method may include: receiving a downlink control message from a base station that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; receiving the downlink message set based on the received downlink control message; and sending a feedback message including feedback information for each downlink message in the downlink message set to the base station based on the received downlink message set, wherein the feedback message is sent after the specific downlink message in the communication downlink message set and based on the offset.

[0035] A device for wireless communication at a UE is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the device to: receive a downlink control message from a base station that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; based on receiving the downlink control message, receive a downlink message set; and based on receiving the downlink message set, send a feedback message to the base station including feedback information for each downlink message in the downlink message set, wherein the feedback message is sent after the specific downlink message in the communication downlink message set and based on the offset.

[0036] Another apparatus for wireless communication at a UE is described. The apparatus may include components for performing the following operations: receiving a downlink control message from a base station that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; receiving the downlink message set based on the received downlink control message; and sending a feedback message including feedback information for each downlink message in the downlink message set to the base station based on the received downlink message set, wherein the feedback message is sent after the specific downlink message in the communication downlink message set and based on the offset.

[0037] A non-transitory computer-readable medium is described, which stores code for wireless communication at a UE. The code may include instructions executable by a processor for: receiving a downlink control message from a base station that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; receiving a downlink message set based on the received downlink control message; and sending a feedback message including feedback information for each downlink message in the downlink message set to the base station based on the received downlink message set, wherein the feedback message is sent after the specific downlink message in the communication downlink message set and based on the offset.

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the feedback information includes a hybrid automatic repeat request acknowledgement or a negative acknowledgement.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the particular downlink message may be a last downlink message in a set of downlink messages.

[0040] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a feedback message based on a single offset indicated by a single downlink control message.

[0041] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink control message includes a DCI.

[0042] A method for wireless communication at a base station is described. The method may include: sending a downlink control message to a UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set corresponding to the communication downlink message set; sending a second offset between each feedback message in the communication feedback message set to the UE; sending the first downlink message in the downlink message set; receiving the first feedback message in the feedback message set from the UE after sending the first downlink message and based on the first offset; and receiving the second feedback message in the feedback message set after receiving the first feedback message and based on the second offset.

[0043] A device for wireless communication at a base station is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the device to: send a downlink control message that schedules a downlink message set to a UE and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set corresponding to the communication downlink message set; send a second offset between each feedback message in the communication feedback message set to the UE; send the first downlink message in the downlink message set; after sending the first downlink message and based on the first offset, receive the first feedback message in the feedback message set from the UE; and after receiving the first feedback message and based on the second offset, receive the second feedback message in the feedback message set.

[0044] Another apparatus for wireless communication at a base station is described. The apparatus may include components for performing the following operations: sending a downlink control message to a UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a communication feedback message set corresponding to the downlink message set; sending a second offset between each feedback message in the communication feedback message set to the UE; sending the first downlink message in the downlink message set; receiving the first feedback message in the feedback message set from the UE after sending the first downlink message and based on the first offset; and receiving the second feedback message in the feedback message set after receiving the first feedback message and based on the second offset.

[0045] A non-transitory computer-readable medium is described, which stores code for wireless communication at a base station. The code may include instructions executable by a processor for: sending a downlink control message scheduling a downlink message set to a UE and indicating a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set corresponding to the communication downlink message set; sending a second offset between each feedback message in the communication feedback message set to the UE; sending the first downlink message in the downlink message set; after sending the first downlink message and based on the first offset, receiving the first feedback message in the feedback message set from the UE; and after receiving the first feedback message and based on the second offset, receiving the second feedback message in the feedback message set.

[0046] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining an order of downlink message sets, wherein sending the downlink control message may be based on determining the order of the downlink message sets.

[0047] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each feedback message of the feedback message set corresponds to a downlink message of the downlink message set based on an order of the downlink message set.

[0048] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining the order of a downlink message set may include operations, features, components, or instructions for determining a first order of time domain resource sets for communicating the downlink message set, and determining a second order for communicating the feedback message set based on the first order of the time domain resource sets, wherein sending the first feedback message and the second feedback message may be based on determining the second order of the feedback message set.

[0049] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a third order of component carrier indices within a single time domain resource in a set of time domain resources used to communicate at least a portion of a set of downlink messages, wherein determining a second order of the set of feedback messages may be based on determining the third order of the component carrier indices.

[0050] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining, based on information included in a downlink control message, time domain resources and component carrier indices associated with each downlink message in a downlink message set, wherein determining an order of the downlink message set may be based on determining the time domain resources and component carrier indices associated with each downlink message, and determining a second order for communicating feedback message sets based on determining the time domain resources and component carrier indices associated with each downlink message in the downlink message set, wherein sending a first feedback message and a second feedback message may be based on determining the second order of the feedback message set.

[0051] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for scanning a set of component carrier indices within a time domain resource in a set of cross-time domain resources, wherein the set of component carrier indices includes a component carrier index associated with each downlink message in a set of downlink messages, and the set of time domain resources includes a time domain resource associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages may be based on scanning across the set of time domain resources.

[0052] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for scanning a set of time domain resources within a component carrier index in a set of component carrier indexes, wherein the set of component carrier indexes includes component carrier indexes associated with each downlink message in a set of downlink messages, and the set of time domain resources includes time domain resources associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages may be based on scanning across the set of component carrier indexes.

[0053] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for sending a set of downlink messages to a UE via a set of component carriers based on carrier aggregation, each of the set of component carriers being associated with a component carrier index, wherein an order of the set of downlink messages may be based on the set of component carrier indices associated with the carrier aggregation.

[0054] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a first resource for a first downlink message and a second resource for a second downlink message, wherein sending the first downlink message may be based on determining the first resource, and determining a third resource for a first feedback message based on the first resource and the first offset, and determining a fourth resource for the second feedback message based on the third resource and the second offset, wherein sending the first feedback message and the second feedback message may be based on determining the third resource and the fourth resource.

[0055] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first resource, the second resource, the third resource, and the fourth resource include an indication of a time slot.

[0056] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include an operation, feature, component, or instruction for determining a first index associated with a first feedback message, the first index indicating a first number of frequency domain resources and a second number of time domain resources used to communicate the first feedback message, wherein receiving the first feedback message may be based on determining the first index, and based on determining the first index, determining a second index associated with the second feedback message, wherein receiving the second feedback message may be based on determining the second index.

[0057] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second index includes the first index.

[0058] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending an indication of a first index associated with the first feedback message in a downlink control message to a UE.

[0059] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an uplink control channel index of a first feedback message can be based on an indication in a downlink control message and a starting CCE index in the downlink control message, wherein receiving the first feedback message can be based on the uplink control channel index.

[0060] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining resources for communicating each downlink message in a set of downlink messages, wherein sending the downlink message may be based on determining the resources.

[0061] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a first downlink message based on the determined resources.

[0062] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving each remaining feedback message in the set of feedback messages from the UE based on the second offset after receiving the second feedback message.

[0063] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a set of downlink messages to a UE based on sending a downlink control message.

[0064] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each feedback message in the set of feedback messages may be configured to provide a hybrid automatic repeat request acknowledgment or a negative acknowledgment for a single message in the set of downlink messages.

[0065] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first offset comprises a time domain resource interval between a first downlink message in the set of communication downlink messages and a first feedback message in the set of communication feedback messages.

[0066] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second offset comprises a time domain resource interval between communicating each feedback message in the set of feedback messages.

[0067] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first offset indicates a first number of time slots between a first time slot used to communicate a first downlink message and a second time slot used to communicate a first feedback message, and a second offset indicates a second number of time slots between a second time slot used to communicate the first feedback message and a third time slot used to communicate the second feedback message.

[0068] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink control message includes a DCI.

[0069] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second offset may be sent via RRC signaling.

[0070] A method for wireless communication at a base station is described. The method may include: sending a downlink control message to a UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; based on receiving the downlink control message, sending the downlink message set; and receiving a feedback message from the UE based on sending the downlink message set that includes feedback information for each downlink message in the downlink message set, wherein the feedback message is received after the specific downlink message in the communication downlink message set and based on the offset.

[0071] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to: send a downlink control message to a UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; send a downlink message set based on receiving the downlink control message; and receive a feedback message including feedback information for each downlink message in the downlink message set from the UE based on sending the downlink message set, wherein the feedback message is received after the specific downlink message in the communication downlink message set and based on the offset.

[0072] Another apparatus for wireless communication at a base station is described. The apparatus may include components for performing the following operations: sending a downlink control message to a UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; based on receiving the downlink control message, sending the downlink message set; and receiving a feedback message from the UE based on sending the downlink message set that includes feedback information for each downlink message in the downlink message set, wherein the feedback message is received after the specific downlink message in the communication downlink message set and based on the offset.

[0073] A non-transitory computer-readable medium is described, which stores code for wireless communication at a base station. The code may include instructions executable by a processor for: sending a downlink control message to a UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; based on receiving the downlink control message, sending the downlink message set; and receiving a feedback message from the UE based on sending the downlink message set that includes feedback information for each downlink message in the downlink message set, wherein the feedback message is received after the specific downlink message in the communication downlink message set and based on the offset.

[0074] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the feedback information includes a hybrid automatic repeat request acknowledgement or a negative acknowledgement.

[0075] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the particular downlink message may be a last downlink message in a set of downlink messages.

[0076] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a feedback message based on a single offset indicated by a single downlink control message.

[0077] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink control message includes a DCI. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1

[0013] An example of a wireless communication system supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0079] Figure 2

[0013] An example of a wireless communication system supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0080] Figure 3 An example of a communication timeline supporting feedback for multiple downlink transmissions in accordance with aspects of the present disclosure is shown.

[0081] Figure 4 An example of a communication timeline supporting feedback for multiple downlink transmissions in accordance with aspects of the present disclosure is shown.

[0082] Figure 5 An example of a communication timeline supporting feedback for multiple downlink transmissions in accordance with aspects of the present disclosure is shown.

[0083] Figure 6 An example of a communication timeline supporting feedback for multiple downlink transmissions in accordance with aspects of the present disclosure is shown.

[0084] Figure 7 An example of a communication timeline supporting feedback for multiple downlink transmissions in accordance with aspects of the present disclosure is shown.

[0085] Figure 8 An example of a process flow for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0086] Fig. 9 An example of a process flow for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0087] Fig.10 and Fig.11 A block diagram of an apparatus supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0088] Fig.12 A block diagram of a communications manager supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0089] Fig.13 A schematic diagram of a system including an apparatus supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0090] Fig.14 and Fig.15 A block diagram of an apparatus supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0091] Fig.16 A block diagram of a communications manager supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0092] Fig.17 A schematic diagram of a system including an apparatus supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown.

[0093] Figures 18 to 25 A flow chart illustrating a method of supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0094] In some wireless communication systems, a user equipment (UE) may receive a downlink control message (such as downlink control information (DCI)) from a base station that schedules multiple downlink messages to the UE over multiple channels. In some cases, the UE may be a reduced capability device (e.g., a RedCap device or a RedCap UE, such as a wearable device), and receiving a single downlink control message that schedules multiple messages or multiple channels may reduce the frequency or duration of one or more downlink control channel monitoring opportunities that the UE may monitor for downlink control messages. For example, the UE may monitor and receive a separate downlink control message to receive scheduling information for each of the multiple downlink messages.

[0095] Although resource and power efficient, a single downlink control message that schedules multiple downlink messages may be less able to provide sufficient information to enable the UE to determine which communication resources to use to send feedback for the multiple downlink messages. For example, in some cases, the UE may send feedback for the downlink message in a unique feedback message (e.g., an uplink message from the UE to the base station that includes the feedback information), and the UE may not be able to determine at least some of the communication resources used to send the multiple feedback messages based on the information provided by the single downlink control message.

[0096] In some implementations of the present disclosure, a base station may provide additional signaling to a UE to enable the UE to determine resources for sending multiple feedback messages corresponding to multiple downlink messages scheduled by a single downlink control message. In some examples, the downlink control message may include a first offset (e.g., a K1 offset), which the UE may use to determine communication resources for sending a first feedback message among multiple feedback messages. The base station may additionally signal a second offset, which the UE may use to determine the number of additional communication resources for sending the remaining feedback messages of the multiple feedback messages. For example, the UE may use the first offset to determine the time interval between receiving a downlink message (e.g., the first downlink message or the last downlink message) among multiple downlink messages and sending the first feedback message. The UE may use the second offset to determine the time interval between sending the first feedback message and sending the second feedback message. As described in more detail herein (including references to Figures 3 to 5), the second offset may be used to determine a time interval between any subsequent feedback messages in sending the plurality of feedback messages. In some aspects, the second offset may indicate a periodicity of the feedback message, and the UE may send the plurality of feedback messages based on the periodicity.

[0097] In some other implementations of the present disclosure, the UE may determine to send a single feedback message that includes feedback information for each downlink message scheduled by a single downlink control message. In such an implementation, the UE may determine the communication resources for sending the feedback message using a first offset (e.g., based on receiving a single indication of the first offset of the single downlink control message). In some examples, the UE may determine the communication resources (e.g., time slot) for sending the feedback message based on a downlink message (e.g., the first downlink message or the last downlink message) among multiple downlink messages and the first offset. As described in more detail herein (including references to Figure 6 and Figure 7 ), for example, the UE may determine a time slot in which to send the feedback message based on adding a first offset to a time slot used to communicate a first or last downlink message among a plurality of downlink messages.

[0098] Certain aspects of the subject matter described herein can be implemented to achieve one or more potential advantages. The described technology can enable base stations and UEs to effectively communicate feedback associated with multiple downlink messages scheduled by a single downlink control message (e.g., a single DCI). Therefore, the UE can maintain the complexity reduction and power saving benefits associated with receiving a single downlink control message that schedules multiple downlink messages, while also providing feedback for these downlink messages. Therefore, the described technology can be implemented to promote more efficient communication between the base station and the UE, and the possibility of increasing successful communication between the base station and the UE can also be achieved while maintaining low-complexity operation. In addition, based on increasing the possibility of successful communication by providing feedback, the base station and the UE can have more efficient resource utilization and higher spectrum efficiency, which can obtain a larger system capacity and a higher data rate.

[0099] Aspects of the present disclosure are initially described in the context of wireless communication systems. Aspects of the present disclosure are additionally described in the context of communications, timelines, and process flows. Aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow charts related to feedback for multiple downlink transmissions.

[0100] Figure 1An example of a wireless communication system 100 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, or a new radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0101] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may be different forms of devices or devices with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0102] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. The UEs 115 may be different forms of devices or devices with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as Figure 1 Other UEs 115, base stations 105, or network equipment (eg, core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment) are shown.

[0103] The base stations 105 may communicate with the core network 130, or with each other, or both. For example, the base stations 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 may communicate with each other via the backhaul links 120 (e.g., via X2, Xn, or other interfaces) directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0104] The one or more base stations 105 described herein may include or may be referred to by those skilled in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga NodeB (any of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology.

[0105] UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where "device" may also be referred to as a unit, a station, a terminal, a client, and other examples. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, a machine type communication (MTC) device, etc., which may be implemented in various objects such as appliances, vehicles, meters, etc.

[0106] The UE 115 described herein may be capable of communicating with various types of devices, such as Figure 1 Other UEs 115 as well as base stations 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. are shown, which may sometimes act as relays.

[0107] UE 115 and base station 105 can communicate with each other wirelessly via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio spectrum resources with a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of a radio frequency spectrum band (e.g., bandwidth portion (BWP)) operating according to one or more physical layer channels of a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating operations for carriers, user data, or other signaling. The wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. According to the carrier aggregation configuration, UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0108] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by a UE 115. A carrier may operate in a standalone mode, where initial acquisition and connection may be performed by a UE 115 via the carrier, or a carrier may operate in a non-standalone mode, where a different carrier (e.g., with the same or different radio access technology) is used to anchor the connection.

[0109] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode), or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0110] A carrier may be associated with a specific bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). A device of the wireless communication system 100 (e.g., a base station 105 or a UE 115 or both) may have a hardware configuration that supports communication on a specific carrier bandwidth, or may be configured to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of a carrier bandwidth.

[0111] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may be composed of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the codec rate of the modulation scheme, or both). Therefore, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may also increase the data rate or data integrity of communications with UE 115.

[0112] One or more numerologies may be supported for a carrier, where the numerologies may include subcarrier spacing (Δf) and cyclic prefixes. A carrier may be divided into one or more BWPs with the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications by the UE 115 may be limited to one or more active BWPs.

[0113] The time interval of the base station 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0114] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., depending on the length of the cyclic prefix preceding each symbol period). In some wireless communication systems 100, a time slot may also be divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling period. The duration of a symbol period may depend on the subcarrier spacing or the operating spectrum band.

[0115] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0116] Physical channels may be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed on a downlink carrier using one or more time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a number of symbol periods and may extend across a system bandwidth of a carrier or a subset of that system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a group of UEs 115. For example, one or more UEs 115 may monitor or search for a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information of a control information format having a given payload size. A search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0117] Each base station 105 can provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with the base station 105 (e.g., via a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other identifier) ​​used to distinguish adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. Depending on various factors such as the capabilities of the base station 105, the range of these cells may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area. For example, a cell may be or include a building, a subset of a building, an external space between or overlapping a geographic coverage area 110, and the like.

[0118] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to a UE 115 with a service subscription to a network provider that supports the macro cell. Compared to a macro cell, a small cell may be associated with a low-power base station 105, and the small cell may operate in the same or different (e.g., licensed, unlicensed) spectrum band as the macro cell. A small cell may provide unrestricted access to a UE 115 with a service subscription to a network provider, or may provide restricted access to a UE 115 with an association to a small cell (e.g., a UE 115 in a closed user group (CSG), a UE 115 associated with a user in a home or office). A base station 105 may support one or more cells, and may also support communications on one or more cells using one or more component carriers.

[0119] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0120] In some examples, base stations 105 may be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0121] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0122] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that are integrated with sensors or meters to measure or capture information and relay the information to a central server or application that utilizes the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.

[0123] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode supporting unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a power saving deep sleep mode when not engaged in active communications, or operating on a limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0124] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency are used interchangeably herein.

[0125] In some examples, UE 115 may also be able to communicate directly with other UE 115 via a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105 or otherwise unable to receive transmissions from a base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to each other UE 115 in the group. In some examples, a base station 105 facilitates resource scheduling for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of a base station 105.

[0126] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles can signal information about traffic conditions, signal scheduling, weather, safety, emergency events, or any other information related to the V2X system. In some examples, vehicles in a V2X system can communicate with roadside infrastructure such as roadside units, or communicate with a network via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communication, or communicate with both.

[0127] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets to or interconnecting with an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted through user plane entities, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. The operator IP service 150 may include access to the Internet, (one or more) intranets, an IP multimedia subsystem (IMS), or a packet-switched streaming service.

[0128] Some network devices, such as base stations 105, may include subcomponents such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs), or merged into a single network device (e.g., base station 105).

[0129] The wireless communication system 100 may operate using one or more spectrum bands typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength range is approximately 1 decimeter to 1 meter. UHF waves may be blocked or redirected by buildings and environmental features, but these waves can penetrate structures sufficiently to allow macro cells to provide services to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission of smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.

[0130] The wireless communication system 100 may also operate in the super high frequency (SHF) region (also known as the centimeter band) using a spectrum band from 3 GHz to 30 GHz, or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of each device may be smaller and closer than the UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and a shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may vary by country or regulatory agency.

[0131] The wireless communication system 100 can utilize both licensed video spectrum bands and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can adopt license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed radio frequency spectrum band, devices such as base stations 105 and UEs 115 can use carrier sensing for collision detection and avoidance. In some examples, operations in unlicensed bands can be based on a combination of carrier aggregation configurations and component carriers operating in licensed bands (e.g., LAA). Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and the like.

[0132] The base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels that may support MIMO operations, or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna accessory such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located in different geographical locations. The base station 105 may have an antenna array with multiple rows and columns of antenna ports, which the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0133] The base station 105 or UE 115 can use MIMO communication to exploit multipath signal propagation and increase spectral efficiency by sending or receiving multiple signals via different spatial layers. This technology may be referred to as spatial multiplexing. Multiple signals may be sent, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) in which multiple spatial layers are sent to the same receiving device and multi-user MIMO (MU-MIMO) in which multiple spatial layers are sent to multiple devices.

[0134] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals communicated via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals communicated via antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each antenna element can be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0135] The base station 105 or the UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communications with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the base station 105 in different directions. For example, the base station 105 may send signals based on different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device such as the base station 105, or by a receiving device such as the UE 115) to identify the beam direction for subsequent transmission or reception by the base station 105.

[0136] Some signals, such as data signals associated with a particular receiving device, may be sent by base station 105 in a single beam direction (e.g., a direction associated with a receiving device, such as UE 115). In some examples, a beam direction associated with transmissions along a single beam direction may be determined based on signals sent in one or more beam directions. For example, UE 115 may receive one or more of the signals sent by base station 105 in different directions, and UE 115 may report to base station 105 an indication of the signal it received having the highest signal quality or other acceptable signal quality.

[0137] In some examples, transmissions by a device (e.g., base station 105 or UE 115) may be performed using multiple beam directions, and the device may generate a combined beam for transmission (e.g., from base station 105 to UE 115) using a combination of digital precoding or radio frequency beamforming. UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across a system bandwidth or one or more subbands. Base station 105 may send reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may be precoded or unprecoded. UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115), or to send signals in a single direction (e.g., to send data to a receiving device).

[0138] When receiving various signals such as synchronization signals, reference signals, beam selection signals, or other control signals from the base station 105, a receiving device (e.g., UE 115) can try multiple reception configurations (e.g., directional listening). For example, the receiving device can try multiple reception directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different reception beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing received signals according to different reception beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which can be referred to as "listening" according to different reception configurations or reception directions. In some examples, the receiving device can receive along a single beam direction using a single reception configuration (e.g., when receiving a data signal). The single reception configuration can be aligned on a beam direction determined based on listening according to different reception configuration directions (e.g., a beam direction with the highest signal strength, the highest signal-to-noise ratio (SNR), or other acceptable signal quality determined based on listening according to multiple beam directions).

[0139] The wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or packet data convergence protocol (PDCP) layer can be IP-based. The radio link control (RLC) layer can perform packet segmentation and reorganization to communicate on a logical channel. The medium access control (MAC) layer can perform priority processing and multiplexing of logical channels to transmission channels. The MAC layer can also use error detection technology, error correction technology, or both to support retransmission at the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration, and maintenance of the RRC connection (which supports the radio bearer of user plane data) between the UE 115 and the base station 105 or the core network 130. At the physical layer, the transmission channel can be mapped to a physical channel.

[0140] UE 115 and base station 105 can support retransmission of data to increase the possibility of successfully receiving data. Hybrid automatic repeat request (HARQ) feedback is a technology that increases the possibility of correctly receiving data through communication link 125. HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device can support simultaneous slot HARQ feedback, where the device can provide HARQ feedback for data received in the previous symbol in the slot in a specific time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0141] In some implementations of the present disclosure, the base station 105 may send a downlink control message such as DCI to a UE 115 that schedules multiple downlink messages on multiple data channels such as a physical downlink shared channel (PDSCH). Each downlink message may be sent via a different data channel. Based on receiving the downlink control message, the UE 115 may receive multiple downlink messages on multiple data channels, and feedback may be generated for each downlink message. In some examples, the UE 115 may send each generated feedback to the base station 105 in a separate feedback message. In such an example, the base station 105 may communicate a first offset (e.g., a K1 offset) to the UE 115, and may additionally communicate a second offset (e.g., periodicity) to the UE 115. The UE 115 may use the first offset and the second offset to determine the resources used to communicate each feedback message to the base station 105.

[0142] For example, the UE 115 may determine a first resource (e.g., a first time slot) for communicating a first feedback message based on a first offset and a resource for communicating a first downlink message or a last downlink message. For example, the first offset may indicate a first number of time domain resources (e.g., a first number of time slots) between a communication downlink message and a first feedback message. The UE 115 may determine to send the first feedback message in a first resource that occurs after a resource (e.g., a time slot) for communicating a reference downlink message (e.g., a first downlink message or a last downlink message) for a first number of time domain resources (e.g., a first number of time slots). In addition, the UE 115 may determine a second resource (e.g., a second time slot) for communicating a second feedback message based on the first resource and the second offset. For example, the second offset may indicate a second number of time domain resources (e.g., a second number of time slots) between communicating a first feedback message and a subsequent feedback message (e.g., a second feedback message). The UE 115 may determine to send the second feedback message via a second resource that occurs after a second number of time domain resources (e.g., a second number of time slots) after the first resource for communicating the first feedback message. UE 115 may similarly use the second offset to space the feedback messages apart to send any number of remaining feedback messages.

[0143] In some other examples, UE 115 may send feedback generated for each downlink message set in a single feedback message. In such an example, base station 105 may communicate a first offset (e.g., a K1 offset) to UE 115. UE 115 may use the first offset (e.g., a single indication of the first offset) to determine the resources used to communicate the feedback message. For example, UE 115 may determine to send a single feedback message in a resource (e.g., a time slot) based on the first offset and the resources used to communicate the first downlink message or the resources used to communicate the last downlink message in multiple downlink messages. For example, UE 115 may determine to send the feedback message in the first number of time domain resources (e.g., the first number of time slots) after the resources used to communicate the last downlink message.

[0144] Figure 2An example of a wireless communication system 200 that supports feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. The wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be examples of corresponding devices as described herein. The base station 105-a and the UE 115-a can communicate with a geographic coverage area 110-a via a communication link 205, and the geographic coverage area 110-a may include a downlink communication link 205-a and an uplink communication link 205-b. In some examples, the base station 105-a can use the downlink communication link 205-a to send a DCI 210 that schedules a PDSCH 215, and the UE 115-a can use the uplink communication link 205-b to send feedback 220.

[0145] In some cases, the base station 105-a may send a single DCI 210 that schedules multiple downlink shared channels, such as multiple PDSCHs 215, to reduce the amount of monitoring performed by the UE 115-a. For example, the base station 105-a may also send a separate DCI 210 to provide scheduling information for each PDSCH 215, and thus, the UE 115-a may monitor a downlink control channel, such as a physical downlink control channel (PDCCH), for a number of different DCI 210 transmissions. Such additional PDCCH monitoring may result in greater computational complexity and increased power costs at the UE 115-a, which may adversely affect the performance of the UE 115-a.

[0146] For example, UE 115-a may be used as a reduced capability device (e.g., a RedCap device or RedCap UE) and may accordingly prioritize battery life over data throughput. In such an example, UE 115-a may be an example of a wearable device, such as a watch or other wristband device (e.g., a smartwatch, activity tracker, etc.), a headset, a head mounted display (HMD), a sensor, or any other device that prioritizes battery life or may operate in a lower power or battery efficiency mode. By monitoring a single DCI 210 (e.g., a single downlink grant) to receive scheduling information for multiple PDSCHs 215, UE 115-a may increase power savings at UE 115-a relative to a UE 115 that may receive different DCI 210s for each scheduled PDSCH 215.

[0147] Thus, UE 115-a can receive DCI 210 and determine resources allocated to PDSCH 215-a and PDSCH 215-b, which can be used to communicate downlink messages between base station 105-a and UE 115-a. However, in some cases, DCI 210 may provide insufficient information for UE 115-a to determine resources for communicating feedback corresponding to multiple downlink messages. For example, in some cases, UE 115-a can receive DCI 210 for each PDSCH 215, and each DCI 210 can include information related to resources that UE 115-a can use to send feedback corresponding to the PDSCH 215 scheduled by DCI 210. Thus, in a scenario where a single DCI 210 schedules multiple PDSCHs 215, UE 115-a may be unable to determine resources for communicating feedback 220 corresponding to each PDSCH 215 (e.g., because a single DCI 210 may only include information related to resources for communicating feedback 220 for one PDSCH 215).

[0148] In some implementations of the present disclosure, the base station 105-a may transmit a DCI 210 scheduling multiple PDSCHs 215 including a first offset, and the base station 105-a may additionally signal a second offset, and the UE 115-a may use the second offset to determine resources for sending feedback 220. For example, the UE 115-a may use the first offset and the second offset to determine resources for sending feedback 220 corresponding to a downlink message received via each scheduled PDSCH 215. For example, DCI 210 may schedule a first downlink message using PDSCH 215-a and a second downlink message using PDSCH 215-b, and based on the first offset and the second offset, UE 115-a may determine resources for sending feedback 220-a and feedback 220-b to base station 105-a, wherein feedback 220-a may include feedback information corresponding to the first downlink message (e.g., PDSCH 215-a), and feedback 220-b may include feedback information corresponding to the second downlink message (e.g., PDSCH 215-b). In some aspects, the feedback information may include HARQ acknowledgment (ACK) or negative acknowledgment (NACK) feedback. In some cases, each PDSCH 215 scheduled by DCI 210 may be associated with a different HARQ process identifier. For example, PDSCH 215-a may be associated with a first HARQ process identifier, and PDSCH 215-b may be associated with a second HARQ process identifier.

[0149] The first offset may be an example of a K1 offset included in the DCI 210. The first offset may be dynamically configured by the base station 105-a at the UE 115-a. In some cases, the UE 115a may be configured (e.g., semi-statically configured) with a certain number of K1 offsets, and the base station 105-a may provide an indication of a K1 offset (e.g., the first offset) by sending a certain number of bits in a field of the DCI 210 (such as a PDSCH-to-HARQ feedback timing indicator field). For example, the UE 115-a may be configured with 8 K1 offsets and may store 8 K1 offsets. The base station 105-a may signal the UE 115-a to select one of the 8 K1 offsets as the first offset based on sending 3 bits in the PDSCH-to-HARQ feedback timing indicator field, where each bit value (e.g., each permutation of 3 bits) may correspond to a unique K1 offset stored in a table at the UE 115-a. For example, UE 115-a may store 8 values ​​(such as [1, 10, 20, 30, 40, 50, 60, 80]), and base station 105-a may signal an index value of 011, and UE 115-a may select one of the K1 offsets stored by UE 115-a as the first offset.

[0150] UE 115-a may use the first offset to determine a resource (e.g., a time slot) for sending a first feedback message such as feedback 220-a. For example, the first offset (e.g., a K1 offset) may indicate a certain number of time domain resources (e.g., a certain number of time slots) during which PDSCH 215 (such as PDSCH 215-a) is scheduled after the first time domain resource. Alternatively, the first offset may indicate a certain number of time domain resources (e.g., a certain number of time slots) after the time domain resource that schedules the last PDSCH 215 (such as PDSCH 215-b). In some aspects, the number of time domain resources indicated by the first offset may be referred to as K1 time slots. Thus, UE 115-a may send feedback 220-a in a time slot that is K1 time slots after the first time slot for communicating the first downlink message using PDSCH 215-a or K1 time slots after the time slot for communicating the second downlink message using PDSCH 215-b.

[0151] UE 115-a may determine resources for sending feedback 220-b based on the resources used to send feedback 220-a and the second offset. For example, the second offset may indicate a periodic or regular time interval that UE 115-a may use to send feedback 220 other than feedback 220-a. In some aspects, the second offset may indicate a certain number of time domain resources (e.g., a certain number of symbols, a certain number of time slots, a certain number of subframes, etc.) after the start of the time domain resources (e.g., time slots) used to send the previous feedback message. For example, UE 115-a may determine to send feedback 220-b during resources of the number of domain resources after the start of the resources (e.g., time slots) used to send feedback 220-a.

[0152] In some aspects, the number of time domain resources indicated by the second offset may be referred to as M symbols or M time slots, and thus, UE 115-a may send feedback 220-b M symbols or time slots after the start of the resources used to send feedback 220-a. Figure 2 Two feedback messages (e.g., feedback 220-a and feedback 220-b) are shown, but UE 115-a can similarly send any number of feedback messages based on the periodicity indicated by the second offset, the feedback message including feedback information for any number of downlink messages scheduled by DCI 210. Thus, UE 115-a can send feedback 220-a, feedback 220-b, and any remaining feedback 220 associated with the downlink message received from base station 105-a in a semi-persistent manner (e.g., the periodicity indicated by the second offset can semi-persistently schedule feedback 220 from UE 115-a to base station 105-a). In some cases, based on implementing a semi-persistent transmission scheme, the feedback message may conflict with other communications scheduled at UE 115-a. In this case, base station 105-a and UE 115-a can resolve the conflict based on the configured process.

[0153] In some examples, the second offset can be configured by the base station 105-a (e.g., via the network) at the UE 115-a. For example, in some implementations, the base station 105-a can semi-statically configure the second offset at the UE 115-a (e.g., via RRC signaling). In some other implementations, the base station 105-a can dynamically configure the second offset at the UE 115-a. In such an implementation, the base station 105-a can include the second offset in the DCI 210. Thus, the DCI 210 may include scheduling information related to multiple PDSCHs 215, the first offset, and the second offset. Additionally or alternatively, the second offset can be pre-configured at the UE 115-a.

[0154] UE 115-a may use uplink channel resources (such as physical uplink control channel (PUCCH) resources) to send feedback 220-a and feedback 220-b to base station 105-a. For example, each time slot (e.g., each uplink time slot such as a PUCCH time slot) that base station 105-a and UE 115-a may use to communicate feedback 220 may be configured to support a certain number of different PUCCH resources (e.g., 16) that UE 115-a may use to send feedback 220. PUCCH resources may refer to a time and frequency resource allocation (e.g., a two-dimensional time and frequency resource grid) for sending data carried by a PUCCH within a time slot.

[0155] In some cases, the UE 115-a may determine the PUCCH resource for sending feedback 220 based on the index. For example, each PUCCH resource may be associated with an index, and the UE 115-a may determine the PUCCH resource based on the determined index. In some cases, the UE 115-a may determine the index based on an indication in the DCI 210 and a starting CCE index of the DCI 210. For example, the indication in the DCI 210 may include a certain number of bits (e.g., 3 bits) in a PUCCH resource indicator (PRI) field. The UE 115-a may use the number of bits in the PRI field of the DCI 210 and implicitly determine another bit based on the starting CCE index of the DCI 210 (e.g., a scheduling DCI), and determine the index corresponding to the PUCCH resource based on the number of bits in the PRI field and the implicitly determined information. In some implementations, the UE 115-a may use the same PUCCH resource to send each feedback 220 to the base station 105-a. For example, UE 115-a may determine a single index (eg, based on receiving a single DCI 210) and may send feedback 220-a and feedback 220-b to base station 105-a using PUCCH resources corresponding to the determined index.

[0156] UE 115-a may determine time domain resources (e.g., time slots such as PUCCH time slots) and PUCCH resources for communicating multiple feedback messages, each feedback message including feedback information corresponding to one of a plurality of PDSCHs 215 scheduled by DCI 210 (e.g., corresponding to a downlink message received via one of the plurality of PDSCHs 215). In other words, base station 105-a and UE 115-a may support a one-to-one mapping between the number of PDSCHs 215 scheduled by DCI 210 and the number of feedback messages sent by UE 115-a. In some implementations, UE 115-a may send multiple feedback messages (e.g., feedback 220-a and feedback 220-b) in a train-like manner, where each feedback message follows a previous feedback message in sequence based on a periodicity indicated by a second offset. For example, UE 115-a (e.g., a reduced capability device) may be associated with relaxed latency conditions associated with receiving HARQ-ACK / NACK, and thus gradually receiving a certain number of feedback messages in a train-like manner over time may be sufficient to provide successful communication between base station 105-a and UE 115-a.

[0157] In order to enable mutual understanding between the base station 105-a and the UE 115-a as to which feedback message corresponds to which PDSCH 215, the base station 105-a and the UE 115-a may determine the order of the PDSCH 215 based on the scheduling information of the plurality of PDSCHs 215. In some examples, the base station 105-a and the UE 115-a may communicate the feedback messages based on the order of the PDSCHs 215 to which the feedback messages correspond. For example, the base station 105-a and the UE 115-a may determine that the PDSCH 215-a is ordered before the PDSCH 215-b, and therefore, the feedback 220-a may include feedback information of a downlink message received using the PDSCH 215-a, and the feedback 220-b may include feedback information of a downlink message received using the PDSCH 215-b.

[0158] For example, UE 115-a may determine, based on PDSCH-215a, using time domain resources (e.g., time slots) preceding PDSCH 215-b, that feedback information corresponding to PDSCH 215-a will be included in feedback 220-a. Additionally or alternatively, base station 105-a may send PDSCH 215-a and PDSCH 215-b using different component carriers. In such an example, UE 115-a may determine, based on PDSCH 215-a using a component carrier associated with a lower component carrier index (e.g., a higher spectrum band) than PDSCH 215-b, that feedback information for PDSCH 215-a will be included in feedback 220-a. Similarly, UE 115-a can determine to include feedback information for PDSCH 215-b (e.g., for a second downlink message received via PDSCH 215-b) in feedback 220-b based on PDSCH 215-b using time domain resources after PDSCH 215-a or using a component carrier associated with a higher component carrier index (e.g., a lower spectral band) than PDSCH 215-a, or both.

[0159] In some examples, the base station 105-a and the UE 115-a may determine the order of the PDSCH 215 based on the time domain resources used to transmit the PDSCH 215, the component carrier index associated with the PDSCH, or a combination thereof. The UE 115-a may order the PDSCH 215 (and thereby order the feedback 220) based on the time domain resources used to communicate the PDSCH 215. For example, if each PSCH 215 is transmitted in a different time domain resource (e.g., a time slot), the order of the PDSCH 215 (and the order of the feedback 220) may be based on the time domain resources used. For example, a first feedback 220-a transmitted by the UE 115-a may correspond to a first PDSCH 215-a, a second feedback 220b transmitted by the UE 115-a may correspond to a second PDSCH 215-b, and so on. However, in some cases, two or more PSCHs 215 may be transmitted using the same time domain resources. In this case, the UE 115-a (or base station 105-a) can use the component carrier index of each PDSCH to determine the order of the PDSCH 215 within the time domain resource. In some cases, such as when all PDSCHs 215 are transmitted during the same time domain resource, the UE 115-a (or base station 105-a) can use the component carrier index to determine the order of the PDSCH 215 and thereby determine the order in which the feedback 220 is transmitted. Figure 3-Figure 5 Additional details regarding ordering the PDSCH 215 and feedback 220 are described.

[0160] In some examples, the base station 105-a and the UE 115-a may determine the ordering of the PDSCH 215 based on the location of the PDSCH 215 on a two-dimensional resource grid of time domain resources and component carrier indices. For example, the base station 105-a and the UE 115-a may order the PDSCH 215 based on scanning across different time domain resources and scanning across different component carrier indices.

[0161] For example, the base station 105-a and the UE 115-a may scan across a set of component carrier indices within a first time domain resource in the set of time domain resources. While scanning across a set of component carrier indices within the first time domain resource, the base station 105-a and the UE 115-a may increase to a second time domain resource and scan across a set of component carrier indices within the second time domain resource. The base station 105-a may similarly scan the set of component carrier indices of the remaining time domain resources within the set of time domain resources, and the base station 105-a and the UE 115-a may construct a queue of PDSCHS 215 based on the order of the positions of the PDSCHS 215 identified by the base station 105-a and the UE 115-a during the time first, component carrier index second scanning operation. For example, the base station 105-a may identify a coordinate pair and a component carrier index in a resource grid of time domain resources corresponding to the PDSCH 215-a before identifying a coordinate pair corresponding to the PDSCH 215-b, and may therefore sort the PDSCH 215-a before the PDSCH 215-b. Thus, the UE 115-a may send feedback information in feedback 220-a for a first downlink message received via the PDSCH 215-a, and may include feedback information in feedback 220-b for a second downlink message received via the PDSCH 215-b.

[0162] The base station 105-a and the UE 115-a may similarly perform such scanning operations in a component carrier index first, time domain resource second manner. For example, the base station 105-a and the UE 115-a may scan across a set of time domain resources within a first component carrier index in a set of component carrier indices, and once the set of time domain resources within the first component carrier index is scanned, the base station 105-a and the UE 115-a may be increased to a second component carrier index and may scan across a set of time domain resources within the second component carrier index. Similarly, the base station 105-a may scan the set of time domain resources of the remaining component carrier indices within the set of component carrier indices, and the base station 105-a and the UE 115-a may construct a queue of PDSCH 215 based on the order of the locations of PDSCH 215 identified by the base station 105-a and the UE 115-a during the component carrier first, time domain resource second scanning operation. Additional examples related to such ordering of multiple feedback messages are described herein (including references to Figures 3 to 5 ).

[0163] In some other implementations of the present disclosure, UE 115-a may determine to send a single feedback message including feedback information for some or all PDSCHs 215 scheduled by DCI 210 (e.g., including feedback information for downlink messages received through each PDSCH 215). In such an implementation, UE 115-a may receive DCI 210 that schedules multiple PDSCHs 215 and includes a first offset (e.g., a K1 offset), and may determine resources for communicating feedback 220 (e.g., feedback 220-a or feedback 220-b) based on the first offset and the first scheduled PDSCH 215 or the last scheduled PDSCH 215. For example, UE 115-a may determine the time domain resources for communicating the last scheduled PDSCH 215 (such as PDSCH 215-b), and may determine to send feedback 220 K1 time slots after PDSCH 215-b. Similarly, UE 115-a may alternatively determine time domain resources for communicating a first scheduled PDSCH 215 (such as PDSCH 215-a), and may determine to send feedback 220 K1 time slots after PDSCH 215-a. Thus, UE 115-a may determine resources for communicating feedback 220 based on receiving a single DCI 210 and using a single K1 offset, the feedback 220 including feedback information for each PDSCH 215 scheduled by DCI 210. Additional details related to sending a single feedback message for multiple PDSCHs 215 scheduled by DCI 210 are described herein (including reference to Figure 6 and Figure 7 ).

[0164] In either implementation, the UE 115-a can effectively determine resources (or a certain amount of resources) for communicating feedback 220 to the base station 105-a in response to receiving multiple downlink messages carried by multiple PDSCHs 215 scheduled by a single DCI 210. In addition, the described techniques can enable the UE 115-a to send feedback 220, which can increase the likelihood of successful communication between the base station 105-a and the UE 115-a while maintaining a low power cost associated with receiving a single DCI 210.

[0165] Figure 3An example of a communication timeline 300 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the communication timeline 300 can implement aspects of the wireless communication system 100 and the wireless communication system 200. The communication timeline 300 can illustrate communications between a base station 105 and a UE 115, which can be examples of corresponding devices as described herein. The communication timeline 300 can illustrate an example of how a base station 105 can schedule multiple PDSCHs 310 using a single DIC 305. For example, as shown in the communication timeline 300, the base station 105 can schedule multiple PDSCHs 315 on a single component carrier (e.g., within a single spectrum band), and therefore, can be separated in time from the PDSCH 310.

[0166] The base station 105 may send a DCI 305 including scheduling information for a plurality of PDSCHs 310 and a first offset (e.g., offset 320, which may be an example of a K1 offset of K1 time slots) to the UE 115. The base station 105 may additionally send a second offset, which may indicate a period 325 for semi-persistently scheduling a plurality of feedback messages. As described herein, the UE 115 may use the offset 320 to determine resources (e.g., time domain resources, e.g., time slots) for communicating a first feedback message (e.g., feedback 315-a) based on time domain resources for communicating a first downlink message (such as a downlink message communicated using the PDSCH 310-a). For example, the base station 105-a may send a first downlink message to the UE 115 using the PDSCH 310-a, which may occupy a first time slot. UE 115-a may determine a second time slot for sending feedback 315-a based on adding an offset 320 to the last symbol of the first time slot occupied by PDSCH 310-a (e.g., adding K1 time slots). In other words, the second time slot used by UE 115-a to send feedback 315-a and the first time slot used to communicate on PDSCH 310-a may be separated in the time domain by offset 320 (e.g., K1 time slots). In some other examples, UE 115 may refer to offset 320 from the last scheduled PDSCH 310. In such an example, UE 115 may determine a time slot for sending feedback 315-a based on adding offset 320 to the last symbol of the time slot occupied by the last scheduled PDSCH 310, such as PDSCH 310-c.

[0167] UE 115-a may determine the time domain resources (e.g., time slots) for sending the remaining feedback messages based on the period 325 indicated by (e.g., derived from) the second offset. For example, UE 115-a may use the second offset to determine the period 325 and may send each remaining feedback message to base station 105-a according to the period 325, such as Figure 3 As shown. The period 325 may include a certain number of symbols, a certain number of time slots, or a certain number of subframes. In some aspects, the period 325 may refer to the time interval between the start of a first PUCCH that UE 115-a can use to send a first feedback message and the start of a second subsequent PUCCH that UE 115-a can use to send a second subsequent feedback message. For example, UE 115-a may send feedback 315-a in a first PUCCH occupying a first time domain resource, and may send feedback 315-b in a second PUCCH occupying a time domain resource that starts a certain number of time domain resources (e.g., a certain number of symbols, time slots, subframes, etc.) after the start of the first PUCCH, and the number of time domain resources is equal to the period 325. In some aspects, the period may be equal to M time slots and may be semi-statically configured at UE 115 via RRC signaling, or dynamically configured at UE 115 via DCI 305.

[0168] In order to enable a common understanding between the base station 105 and the UE 115 regarding how multiple feedback messages relate to multiple downlink messages communicated using multiple PDSCHs 310, the base station 105 and the UE 115 may similarly determine the order for communicating the multiple feedback messages based on the order of the PDSCHs 310. In some examples, the base station 105 and the UE 115 may order the PDSCHs 310 in a time-first, frequency-second manner. For example, the base station 105 and the UE 115 may first order the PDSCHs 310 based on the time slots used to communicate the PDSCHs 310, and may order any PDSCHs 310 that overlap in time (e.g., any PDSCHs 310 that use the same time slots) based on the component carriers used to communicate the overlapping PDSCHs 310. Figure 3 As shown, the PDSCH 310 may occupy a single component carrier and may therefore be separated in time. Thus, in some examples, the base station 105 and the UE 115 may order the PDSCH 310 based on which PDSCH 310 is scheduled for the earliest time slot.

[0169] For example, the base station 105 and the UE 115 may order the PDSCH 310 such that PDSCH 310-a is first, PDSCH 310-b is second, and PDSCH 310-c is third. Thus, the base station 105 and the UE 115 may include feedback information for a downlink message communicated using PDSCH 310-a in feedback 315-a, feedback information for a downlink message communicated using PDSCH 310-b in feedback 315-b, and feedback information for a downlink message communicated using PDSCH 310-c in feedback 315-c. In other words, the base station 105 and the UE 115 can map the ordering of the feedback 315 to the ordering of the PDSCH 310, so that for each remaining feedback 315 and PDSCH 310, the first transmitted feedback 315-a corresponds to the first scheduled PDSCH 310-a, the second transmitted feedback 315-b corresponds to the second scheduled PDSCH 310-b, and so on.

[0170] In some other examples, the base station 105 and the UE 115 may order the PDSCH 310 in a frequency first, time second manner. Thus, the base station 105 and the UE 115 may first order the PDSCH 310 based on the component carrier index associated with each PDSCH 310, and then order the PDSCH 310 based on the time domain resource in which the PDSCH 310 is scheduled if any PDSCH 310 is scheduled using the same component carrier index.

[0171] Figure 4 An example of a communication timeline 400 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the communication timeline 400 can implement aspects of the wireless communication system 100 and the wireless communication system 200. The communication timeline 400 can show communications between a base station 105 and a UE 115, which can be examples of corresponding devices as described herein. The communication timeline 400 can show an example of how the base station 105 schedules multiple PDSCHs 410 using a single DIC 405 in a carrier aggregation mode. For example, as shown in the communication timeline 400, the base station 105 can schedule multiple PDSCHs 410 on multiple component carriers 430 (e.g., in different spectrum bands), and therefore, the base station 105 can send PDSCHs 410 overlapping in time (e.g., using the same time slot). In such an example, the base station 105 and the UE 115 can support carrier aggregation technology and can communicate on multiple channels in different component carriers at the same time.

[0172] As described herein, the base station 105 may send a DCI 405 that schedules multiple PDSCHs 410 and includes a first offset (e.g., offset 420, which may be an example of a K1 offset of K1 time slots) associated with a time domain resource for communicating a first feedback message, and the base station 105 may additionally send a second offset that may indicate a period 425 for semi-persistent scheduling of multiple feedback messages. The base station 105 and the UE 115 may determine an order for communicating multiple feedback messages based on determining an order of the PDSCHs 410. In some examples, the base station 105 and the UE 115 may determine an order of the PDSCHs 410 in a time-first, frequency-second manner. However, the PDSCHs 410 may occupy the same time domain resources (e.g., the same time slot), and therefore, the base station 105 and the UE 115 may order the PDSCHs 410 based on the component carrier 430 occupied by each PDSCH 410.

[0173] For example, the base station 105 and the UE 115 may order the PDSCH 410 based on the component carrier index associated with each component carrier 430. For example, the PDSCH 410-a may occupy the component carrier 430-a associated with the first component carrier index (e.g., CC0), the PDSCH 410-b may occupy the component carrier 430-b associated with the second component carrier index (e.g., CC1), and the PDSCH 410-c may occupy the component carrier 430-c associated with the third component carrier index (e.g., CC2). In some cases, the component carrier 430-a may be a primary component carrier (e.g., PCC), the component carrier 430-b may be a first secondary component carrier (e.g., SCC-1), and the component carrier 430-c may be a second secondary component carrier (e.g., SCC-2).

[0174] In some examples, the base station 105 and the UE 115 may rank the PDSCH 410 occupying the component carrier 430 associated with the lower component carrier index first. Thus, the base station 105 and the UE 115 may rank the PDSCH 410-a first, the PDSCH 410-b second, and the PDSCH 410-c third. Thus, the UE 115 may send feedback information for downlink messages received using the PDSCH 410-a in feedback 415-a, feedback information for downlink messages received using the PDSCH 410-b in feedback 415-b, feedback information for downlink messages received using the PDSCH 410-c in feedback 415-c, and so on. In some aspects, the UE 115 may send feedback 415 using the component carrier 430-a (e.g., the primary component carrier).

[0175] Alternatively, the base station 105 and the UE 115 may order the PDSCHs 410 occupying the component carriers 430 based on any other ordering of the indices or based on any other ordering of the spectrum bands occupied by each component carrier 430. For example, the base station 105 and the UE 115 may determine to order the PDSCHs 410 associated with higher component carrier indices or lower spectrum bands first. In some examples of this alternative, the UE 115 may send feedback information for downlink messages received using the PDSCH 410-c in feedback 415-a, send feedback information for downlink messages received using the PDSCH 410-b in feedback 415-b, and send feedback information for downlink messages received using the PDSCH 410-a in feedback 415-c.

[0176] Additionally, in some other examples, the base station 105 and the UE 115 can sort the PDSCH 410 in a frequency first, time second manner. Thus, the base station 105 and the UE 115 can first sort the PDSCH 410 based on the component carrier index associated with each PDSCH 310, and then sort the PDSCH 410 based on the time domain resource in which the PDSCH 410 is scheduled if any PDSCH 410 is scheduled using the same component carrier index.

[0177] Figure 5 An example of a communication timeline 500 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the communication timeline 500 can implement aspects of the wireless communication system 100 and the wireless communication system 200. The communication timeline 500 can illustrate communications between a base station 105 and a UE 115, which can be examples of corresponding devices as described herein. The communication timeline 500 can illustrate an example of how the base station 105 schedules multiple PDSCHs 510 using a single DIC 505 in a carrier aggregation mode separated in time. For example, as shown in the communication timeline 500, the base station 105 can schedule multiple PDSCHs 510 on multiple component carriers 430 (e.g., within different spectrum bands) and in multiple time domain resources (e.g., in multiple time slots). In such an example, the base station 105 and the UE 115 can support carrier aggregation technology and can communicate on multiple channels in different component carriers at the same time.

[0178] As described herein, the base station 105 may send a DCI 505 that schedules a plurality of PDSCHs 510 and includes a first offset (e.g., offset 520, which may be an example of a K1 offset of K1 time slots) associated with a time domain resource for communicating a first feedback message, and the base station 105 may additionally send a second offset that may indicate a period 525 for semi-persistently scheduling the plurality of feedback messages. The base station 105 and the UE 115 may determine an order for communicating the plurality of feedback messages based on determining an order of the PDSCHs 510. In some examples, the base station 105 and the UE 115 may determine an order of the PDSCHs 510 in a time first, frequency second manner.

[0179] For example, the base station 105 and the UE 115 may first determine the order of the PDSCHs 510 based on the time domain resources occupied by each PDSCH 510. In some examples, the base station 105 and the UE 115 may determine that the DCI 505 schedules the PDSCH 510-a for the first time slot, and may determine that the DCI 505 schedules the PDSCH 510-b and the PDSCH 510-c for the second time slot but for different component carriers 530. Therefore, the base station 105 and the UE 115 may determine that the PDSCH 510-a is first in the order, and may determine the order between the PDSCH 510-b and the PDSCH 510-c based on the component carrier index associated with the component carrier 530 occupied by each of the PDSCH 510-b and the PDSCH 510-c.

[0180] For example, the base station 105 and the UE 115 may determine that PDSCH 510-b occupies component carrier 530-b, which is a first secondary component carrier (e.g., SCC-1) and is associated with a second component carrier index (e.g., CC1), and that PDSCH 510-c occupies component carrier 530-c, which is a second secondary component carrier (e.g., SCC-2) and is associated with a third component carrier index (e.g., CC2), wherein component carrier 530-a is a primary component carrier (e.g., PCC) and is associated with a first component carrier index (e.g., CC0). The base station 105 and the UE 115 may rank PDSCH 510-b before PDSCH 510-c based on determining that PDSCH 510-b occupies SCC-1 (index CC1) and PDSCH 510-c occupies SCC-2 (index CC2). Thus, UE 115 may send feedback information in feedback 515-a for downlink messages received using PDSCH 510-a, send feedback information in feedback 515-b for downlink messages received using PDSCH 510-b, and send feedback information in feedback 515-c for downlink messages received using PDSCH 510-c. In some aspects, UE 115 may send feedback 515 using component carrier 530-a (e.g., a primary component carrier).

[0181] Alternatively, the base station 105 and the UE 115 may determine to prioritize PDSCH 510-c ahead of PDSCH 510-b based on determining that PDSCH 510-b occupies SCC-1 (index CC1) and PDSCH 510-c occupies SCC-2 (index CC2). In some examples of this alternative, the UE 115 may send feedback information in feedback 515-a for downlink messages received using PDSCH 510-a, send feedback information in feedback 515-b for downlink messages received using PDSCH 510-c, and send feedback information in feedback 515-c for downlink messages received using PDSCH 510-b.

[0182] Additionally, in some other examples, the base station 105 and the UE 115 can sort the PDSCH 510 in a frequency first, time second manner. Thus, the base station 105 and the UE 115 can first sort the PDSCH 510 based on the component carrier index associated with each PDSCH 310, and then sort the PDSCH 510 based on the time domain resource in which the PDSCH 510 is scheduled if any PDSCH 510 is scheduled using the same component carrier index.

[0183] Figure 6 An example of a communication timeline 600 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the communication timeline 600 can implement aspects of the wireless communication system 100 and the wireless communication system 200. The communication timeline 600 can illustrate communications between a base station 105 and a UE 115, which can be examples of corresponding devices as described herein. The communication timeline 600 can illustrate implementations of the present disclosure associated with communicating a single feedback message including feedback information for multiple PDSCHs 610 scheduled by a single DCI 605.

[0184] As described herein, the base station 105 may transmit DCI 605 including scheduling information of a plurality of PDSCHs 610 and a first offset (e.g., offset 620, which may be an example of a K1 offset of K1 time slots). The base station 105 and the UE 115 may determine resources of each PDSCH 610 (including PDSCH 610-a, PDSCH 610-b, and PDSCH 610-c) based on a reference point of the offset 620, and determine which PDSCH 610 is the first scheduled PDSCH 610, or determine which PDSCH 610 is the last scheduled PDSCH 610. Figure 6 As shown, the base station 105 and the UE 115 may determine that the offset 620 is referenced to the last scheduled PDSCH 610, and may determine that the PDSCH 610-c is the last scheduled PDSCH 610. Thus, in some implementations, the base station 105 and the UE 115 may determine to communicate the feedback 615 in the PUCCH at the resource based on the last symbol of the time slot occupied by the PDSCH 610-c and the offset 620. For example, the UE 115 may send the feedback 615 K1 time slots after the last symbol of the PDSCH 610-c.

[0185] In some examples, the base station 105 and the UE 115 may combine the feedback information (e.g., ACK / NACK) of multiple PDSCHs 610 into a single codebook, and the UE 115 may send the feedback 615 in a single PUCCH (e.g., a single PUCCH slot or a single PUCCH resource). Therefore, the feedback 615 may be referred to as a joint feedback message or a joint HARQ-ACK / NACK. In addition, the base station 105 and the UE 115 may determine the time domain resource (e.g., time slot) for communicating the feedback 615 based on a single indication of the offset 620 (e.g., K1 offset). For example, the UE 115 may avoid receiving an additional indication of the offset 620 (or an indication of a different offset 620 (such as a different K1 offset)) in any additional DCI 605 other than the DCI 605 that schedules the PDSCH 610, and the UE 115 may send the feedback 615 including the feedback information for the PDSCH 610 based on the single indication of the offset 620.

[0186] Figure 7 An example of a communication timeline 700 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the communication timeline 700 can implement aspects of the wireless communication system 100 and the wireless communication system 200. The communication timeline 700 can illustrate communications between a base station 105 and a UE 115, which can be examples of corresponding devices as described herein. The communication timeline 700 can illustrate communications between a base station 105 and a UE 115, which can be examples of corresponding devices as described herein. The communication timeline 700 can illustrate an implementation of the present disclosure associated with communicating a single feedback message including feedback information for multiple PDSCHs 710 scheduled by a single DCI 705.

[0187] In some cases, the base station 105 and the UE 115 may support carrier aggregation communication technology, and the base station 105 may schedule multiple PDSCHs 710 on a number of different component carriers 725 via the DCI 705. For example, the DCI 705 may schedule PDSCH 710-a to occupy component carrier 725-a, which may be a primary component carrier (e.g., PCC), schedule PDSCH 710-b to occupy component carrier 725-b, which may be a first secondary component carrier (e.g., SCC-1), and schedule PDSCH 710-c to occupy component carrier 725-c, which may be a second secondary component carrier (e.g., SCC-2). As described herein, the DCI 705 may additionally include a first offset (e.g., offset 720, which may be an example of a K1 offset of K1 time slots).

[0188] In some examples, the base station 105 and the UE 115 may use the offset 720 to determine a time domain resource (e.g., a time slot) for communicating feedback 715 including feedback information for some or all of the PDSCHs 710 scheduled by the DCI 705. For example, the base station 105 and the UE 115 may determine to communicate feedback 715 based on the offset 720 and the last symbol of the time slot occupied by the first scheduled PDSCH 710 or the last scheduled PDSCH 710 according to the reference point of the offset 720. Figure 7 As shown, the base station 105 and the UE 115 may determine the offset 720 to reference the last scheduled PDSCH 710 (such as PDSCH 710-c). Therefore, the UE 115 may send feedback 715 K1 time slots after the last symbol of the time slot occupied by PDSCH 710-c.

[0189] In some examples, the base station 105 and the UE 115 may combine the feedback information (e.g., ACK / NACK) of multiple PDSCHs 710 into a single codebook, and the UE 115 may send the feedback 715 in a single PUCCH (e.g., a single PUCCH time slot or a single PUCCH resource). Therefore, the feedback 715 may be referred to as a joint feedback message or a joint HARQ-ACK / NACK. In addition, the base station 105 and the UE 115 may determine the time domain resource (e.g., time slot) for communicating the feedback 715 based on a single indication of the offset 720 (e.g., K1 offset). For example, the UE 115 may avoid receiving an additional indication of the offset 720 (or an indication of a different offset 720 (such as a different K1 offset)) in any additional DCI 705 other than the DCI 705 that schedules the PDSCH 710, and the UE 115 may send the feedback 715 including the feedback information for the PDSCH 710 based on the single indication of the offset 720.

[0190] Figure 8 An example of a process flow 800 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the process flow 800 can implement aspects of the wireless communication system 100 and the wireless communication system 200. The process flow 800 can illustrate communications between a base station 105-b and a UE 115-b, which can be examples of corresponding devices as described herein. In some examples, the base station 105-b can schedule a set of downlink messages to the UE 115-b in a single DCI, and the UE 115-b can determine resources for sending feedback messages for each downlink message scheduled by the DCI.

[0191] At 805, the base station 105-b may send a downlink control message (e.g., DCI) to the UE 115-b that schedules a set of downlink messages and indicates a first offset. In some examples, the first offset may be a K1 offset and may be an offset between a first downlink message in the set of communication downlink messages and a first feedback message in a set of communication feedback messages (including their feedback information) corresponding to the set of downlink messages. In some aspects, the first offset may include a certain number of time slots (e.g., K1 time slots). In some cases, the downlink control message may schedule a set of downlink messages on a set of downlink shared channels (such as a PDSCH), wherein each downlink message in the set of downlink messages is scheduled for a different PDSCH.

[0192] The downlink control message may include an indication of an index that UE 115-b may use to determine uplink control channel resources (e.g., PUCCH resources) for sending a set of feedback messages. For example, the downlink control message may include a number of bits (e.g., 3 bits) in a PRI field of the downlink control message, and UE 115-b may implicitly determine another bit based on a starting CCE index (e.g., a scheduling DCI) of the downlink control message, and UE 115-b may use the number of bits in the PRI field and the implicitly determined bit to identify an index corresponding to an uplink control channel resource that UE 115-b may use to send a set of feedback messages. UE 115-b may receive the downlink control message and identify resources (e.g., time and frequency resources) that base station 105-b and UE 115-b may use to communicate a set of downlink messages, and may receive the downlink message accordingly.

[0193] At 810, the base station 105-b may send a second offset to the UE 115-b, which the UE 115-b may use as an offset between each feedback message of the communication feedback message set. In some examples, the base station 105-b may send the second offset to the UE 115-b via RRC signaling, and thus, the second offset may be semi-statically configured at the UE 115-b. In some other examples, the base station 105-b may send the second offset to the UE 115-b via a downlink control message (e.g., in a DCI), and thus, the second offset may be dynamically configured at the UE 115-b. The second offset may indicate a periodic or regular time interval of M time domain resources (e.g., M symbols, M time slots, M subframes, etc.), which the UE 115-b may use to semi-persistently send the remaining feedback messages of the feedback message set after sending the first feedback message. Additional details related to the second offset are described herein (including references to Figures 2 to 5 ).

[0194] At 815, base station 105-b may send a set of downlink messages to UE 115-b. Base station 105-b may send each downlink message in the set of downlink messages in a different downlink shared channel scheduled by the downlink control message. In some examples, base station 105-b may send the set of downlink messages using a number of different time domain resources (e.g., such as time slots) or a number of different frequency domain resources (e.g., such as component carriers), or both.

[0195] At 820-a and 820-b, the base station 105-b and the UE 115-b may determine an order of the set of downlink messages based on the transmission of the downlink messages. For example, the base station 105-b and the UE 115-b may determine an order of the downlink messages based on the scheduling information included in the downlink control message sent by the base station 105-b at 805. Additional details related to the ordering of downlink messages are described herein (including reference to Figures 3 to 7 ).

[0196] At 825, UE 115-b may send a set of feedback messages to base station 105-b. In some examples, UE 115-b may send a first feedback message in the set of feedback messages based on the first offset. For example, as described in more detail herein (including with reference to Figures 2 to 7 ), UE 115-b can determine one of the first offset reference downlink messages (e.g., the first scheduled downlink message or the last scheduled downlink message), and UE 115-b can send a first feedback message in time domain resources (e.g., K1 time slots) equal to the first offset after the last symbol of the PDSCH carrying the referenced downlink message.

[0197] UE 115-b may additionally send a second feedback message in the set of feedback messages after sending the first feedback message and based on the second offset. For example, as described in more detail herein (including with reference to Figures 2 to 7 ), UE 115-b may send the second feedback message in time domain resources (e.g., M symbols or M time slots) a number equal to the second offset after the first symbol of the PUCCH carrying the first feedback message. UE 115-b may similarly send each remaining feedback message in the set of feedback messages based on the second offset, and the second offset may define a period during which UE 115-b may send the remaining feedback messages. In some examples, UE 115-b may send each feedback message in the set of feedback messages using the same uplink control channel resources determined based on receiving the downlink control message at 805.

[0198] Fig. 9An example of a process flow 900 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. In some examples, the process flow 900 can implement aspects of the wireless communication system 100 and the wireless communication system 200. The process flow 900 can illustrate communications between a base station 105-c and a UE 115-c, which can be examples of corresponding devices as described herein. In some examples, the base station 105-c can schedule a set of downlink messages to the UE 115-c in a single DCI, and the UE 115-c can determine resources for sending a feedback message including feedback information for each downlink message scheduled by the DCI.

[0199] At 905, the base station 105-c may send a downlink control message (e.g., DCI) to the UE 115-c that schedules a set of downlink messages and indicates an offset. In some examples, the offset may be a K1 offset and may be an offset between a particular downlink message in the set of downlink messages communicated and a feedback message that includes feedback information for the set of downlink messages. In some aspects, the offset may include a number of time slots (e.g., K1 time slots). In some cases, the downlink control message may schedule a set of downlink messages on a set of downlink shared channels (such as a PDSCH), where each downlink message in the set of downlink messages is scheduled for a different PDSCH.

[0200] The downlink control message may include an indication of an index that the UE 115-c may use to determine an uplink control channel resource (e.g., a PUCCH resource) for sending a set of feedback messages. For example, the downlink control message may include a number of bits (e.g., 3 bits) in a PRI field of the downlink control message, and the UE 115-c may implicitly determine another bit based on a starting CCE index (e.g., a scheduling DCI) of the downlink control message, and the UE 115-c may use the number of bits in the PRI field and the implicitly determined bit to identify an index corresponding to an uplink control channel resource that the UE 115-c may use to send the feedback message. The UE 115-c may receive the downlink control message and identify resources (e.g., time and frequency resources) that the base station 105-c and the UE 115-c may use to communicate the set of downlink messages, and may receive the downlink message accordingly.

[0201] At 910, the base station 105-c may send a set of downlink messages to the UE 115-c. The base station 105-c may send each downlink message in the set of downlink messages in a different downlink shared channel scheduled by the downlink control message. In some examples, the base station 105-c may send the set of downlink messages using a number of different time domain resources (e.g., such as time slots) or a number of different frequency domain resources (e.g., such as component carriers), or both.

[0202] At 915, UE 115-b may send a feedback message including feedback information for each of a set of downlink messages scheduled by the downlink control message. In some examples, UE 115-b may combine the feedback information for the set of downlink messages into a single codebook, and UE 115 may send the feedback message in a single PUCCH (e.g., a single PUCCH slot or a single PUCCH resource). In some aspects, UE 115-b may determine resources for communicating the feedback message based on an offset provided by the downlink control message and a reference downlink message. For example, UE 115-b may determine a reference downlink message (e.g., a first scheduled downlink message or a last scheduled downlink message), and may send the feedback message a certain number of time domain resources (e.g., K1 slots) after the last symbol of a downlink shared channel carrying the reference downlink message.

[0203] In some examples, UE 115-b may determine resources for sending feedback resources based on a single indication of the offset, and may receive the single indication of the offset in a downlink control message that schedules the set of downlink messages. Thus, UE 115-b may avoid using additional offsets provided by different downlink control messages than the offset provided by the downlink control message that schedules the set of downlink messages. Additional details related to sending a single feedback message that includes feedback information for a set of downlink messages are described herein, including reference to Figure 6 and Figure 7 .

[0204] Fig.10 A block diagram 1000 of a device 1005 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The device 1005 may be an example of aspects of a UE 115 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0205] The receiver 1010 may receive information associated with various information channels (e.g., control channels, data channels, and information related to feedback for multiple downlink transmissions, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 1005. The receiver 1010 may be a reference Fig.13 Examples of various aspects of the described transceiver 1320. The receiver 1010 may utilize a single antenna or a collection of antennas.

[0206] In some examples, the communication manager 1015 may: receive a downlink control message from a base station that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set that corresponds to the downlink message set, receive a second offset between each feedback message in the communication feedback message set from the base station, receive the first downlink message in the downlink message set, send the first feedback message in the feedback message set to the base station based on the first offset, and send the second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0207] In some other examples, the communication manager 1015 may receive a downlink control message from a base station that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set, receive the downlink message set based on receiving the downlink control message, and send a feedback message including feedback information for each downlink message in the downlink message set to the base station based on receiving the downlink message set, wherein the feedback message is sent after the specific downlink message in the downlink message set and based on the offset. The communication manager 1015 may be an example of aspects of the communication manager 1310 described herein.

[0208] The communication manager 1015 or its subcomponents may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1015 or its subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0209] The communication manager 1015 or its subcomponents can be physically located in various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0210] Transmitter 1020 can transmit signals generated by other components of device 1005. In some examples, transmitter 1020 can be co-located with receiver 1010 in a transceiver module. For example, transmitter 1020 can be a reference Fig.13 Examples of various aspects of the described transceiver 1320. The transmitter 1020 may utilize a single antenna or a collection of antennas.

[0211] In some examples, the communications manager 1015 may be implemented as an integrated circuit or chipset for a mobile device modem, while the receiver 1010 and transmitter 1020 may be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the mobile device modem to enable wireless transmission and reception over one or more frequency bands.

[0212] The communication manager 1015 described herein may be implemented to achieve one or more potential advantages. In some implementations of the present disclosure, the communication manager 1015 may enable the device 1005 to determine communication resources for sending multiple feedback messages including feedback information (e.g., HARQ-ACK / NACK) for multiple downlink messages communicated using multiple PDSCHs scheduled by a single DCI. Thus, the device 1005 may achieve lower computational and power costs associated with monitoring a single DCI in a PDCCH monitoring opportunity while providing feedback for downlink messages sent using multiple scheduled PDSCHs.

[0213] Therefore, based on providing feedback to the base station, the device 1005 can increase the likelihood of successful communication between the base station and the device 1005, while also maintaining low power costs and long battery life. Additionally or alternatively, the device 1005 can shut down one or more processing units or enter a low power mode (such as a sleep mode) between periodic transmissions of feedback based on identifying the periodicity for sending feedback information to the base station. Therefore, the device 1005 can also increase power savings and increase battery life.

[0214] Fig.11A block diagram 1100 of a device 1105 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the device 1005 or UE 115 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1140. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0215] The receiver 1110 may receive information associated with various information channels (e.g., control channels, data channels, and information related to feedback for multiple downlink transmissions, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 1105. The receiver 1110 may be a reference Fig.13 Examples of various aspects of the described transceiver 1320. The receiver 1110 may utilize a single antenna or a collection of antennas.

[0216] The communication manager 1115 may be an example of aspects of the communication manager 1015 described herein. The communication manager 1115 may include a downlink manager 1120, an offset manager 1125, a downlink manager 1130, and a feedback manager 1135. The communication manager 1115 may be an example of aspects of the communication manager 1310 described herein.

[0217] In some examples, the device 1105 may send multiple feedback messages including feedback information of multiple downlink messages scheduled by a single DCI. The downlink manager 1120 may receive a downlink control message from a base station that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. The offset manager 1125 may receive a second offset between each feedback message in the communication feedback message set from the base station. The downlink manager 1130 may receive the first downlink message in the downlink message set. The feedback manager 1135 may send the first feedback message in the feedback message set to the base station based on the first offset, and send the second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0218] In some other examples, the device 1105 may send a single feedback message including feedback information for multiple downlink messages scheduled by a single DCI. The downlink manager 1120 may receive a downlink control message from a base station that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set, and based on receiving the downlink control message, receive the downlink message set. The feedback manager 1135 may send a feedback message including feedback information for each downlink message in the downlink message set to the base station based on receiving the downlink message set, wherein the feedback message is sent after the specific downlink message in the downlink message set and based on the offset.

[0219] Transmitter 1140 can transmit signals generated by other components of device 1105. In some examples, transmitter 1140 can be co-located with receiver 1110 in a transceiver module. For example, transmitter 1140 can be a reference Fig.13 Examples of various aspects of the described transceiver 1320. The transmitter 1140 may utilize a single antenna or a collection of antennas.

[0220] Fig.12 A block diagram 1200 of a communication manager 1205 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The communication manager 1205 may be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 may include a downlink manager 1210, an offset manager 1215, a downlink manager 1220, a feedback manager 1225, a sequencing manager 1230, a carrier aggregation manager 1235, and a PUCCH resource manager 1240. Each of these modules may be in communication with each other directly or indirectly (e.g., via one or more buses).

[0221] The downlink manager 1210 may receive, from a base station, a downlink control message that schedules a downlink message set and indicates a first offset between a first downlink message in the downlink message set and a first feedback message in the feedback message set corresponding to the downlink message set. In some examples, the downlink manager 1210 may receive, from a base station, a downlink control message that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set. In some examples, the downlink manager 1210 may receive, based on receiving the downlink control message, a downlink message set.

[0222] In some examples, downlink manager 1210 may determine a first resource for a first downlink message and a second resource for a second downlink message, wherein receiving the first downlink message is based on determining the first resource. In some examples, downlink manager 1210 may determine a resource for communicating each downlink message in a set of downlink messages based on a downlink control message, wherein receiving the first downlink message is based on determining the resource.

[0223] In some examples, downlink manager 1210 can receive a set of downlink messages from a base station based on receiving a downlink control message. In some cases, the downlink control message includes a DCI.

[0224] The offset manager 1215 may receive a second offset between each feedback message in the set of communication feedback messages from the base station. In some examples, the offset manager 1215 may send the feedback message based on a single offset indicated by a single downlink control message.

[0225] In some cases, the first offset includes a time domain resource interval between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set. In some cases, the second offset includes a time domain resource interval between each feedback message in the communication feedback message set.

[0226] In some cases, the first offset indicates a first number of time slots between a first time slot for communicating the first downlink message and a second time slot for communicating the first feedback message. In some cases, the second offset indicates a second number of time slots between the second time slot for communicating the first feedback message and a third time slot for communicating the second feedback message. In some cases, the second offset is received via RRC signaling. In some cases, the particular downlink message is the last downlink message in the set of downlink messages.

[0227] The downlink manager 1220 may receive a first downlink message in a set of downlink messages.

[0228] The feedback manager 1225 may send a first feedback message in the feedback message set to the base station based on the first offset. In some examples, the feedback manager 1225 may send a second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0229] In some examples, the feedback manager 1225 can send a feedback message including feedback information for each downlink message in the downlink message set to the base station based on receiving the downlink message set, wherein the feedback message is sent after a specific downlink message in the communication downlink message set and based on the offset. In some examples, the feedback manager 1225 can determine a third resource for the first feedback message based on the first resource and the first offset, and determine a fourth resource for the second feedback message based on the third resource and the second offset, wherein sending the first feedback message and the second feedback message is based on determining the third resource and the fourth resource.

[0230] In some examples, the feedback manager 1225 may send each remaining feedback message in the set of feedback messages to the base station based on the second offset after sending the second feedback message.In some cases, the first resource, the second resource, the third resource, and the fourth resource include an indication of a time slot.

[0231] In some cases, each feedback message in the set of feedback messages is configured to provide a hybrid automatic repeat request acknowledgement or negative acknowledgement for a single message in the set of downlink messages. In some cases, the feedback information includes a hybrid automatic repeat request acknowledgement or negative acknowledgement.

[0232] The sequencing manager 1230 may determine an order of a set of downlink messages based on receiving the downlink control message, wherein each feedback message in the set of feedback messages corresponds to a downlink message in the set of downlink messages based on the order of the set of downlink messages. In some examples, the sequencing manager 1230 may determine a first order of a set of time domain resources for communicating the set of downlink messages.

[0233] In some examples, the ordering manager 1230 may determine a second order for communicating the set of feedback messages based on the first order of the set of time domain resources, wherein sending the first feedback message and the second feedback message is based on determining the second order of the set of feedback messages. In some examples, the ordering manager 1230 may determine a third order of component carrier indices within a single time domain resource in the set of time domain resources used to communicate at least a portion of the set of downlink messages, wherein determining the second order of the set of feedback messages is based on determining the third order of the component carrier indices.

[0234] In some examples, the sequencing manager 1230 may determine, based on information included in the downlink control message, a time domain resource and a component carrier index associated with each downlink message in the downlink message set, wherein determining the order of the downlink message set is based on determining the time domain resource and the component carrier index associated with each downlink message. In some examples, the sequencing manager 1230 may determine a second order for communicating the feedback message set based on determining the time domain resource and the component carrier index associated with each downlink message in the downlink message set, wherein sending the first feedback message and the second feedback message is based on determining the second order of the feedback message set.

[0235] In some examples, the sequencing manager 1230 may scan a set of component carrier indices within a time domain resource in a set of cross-time domain resources, wherein the set of component carrier indices includes component carrier indices associated with each downlink message in a set of downlink messages, and the set of time domain resources includes time domain resources associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages is based on scanning across the set of time domain resources.

[0236] In some examples, the sequencing manager 1230 may scan a set of time domain resources within a component carrier index in a set of component carrier indexes, wherein the set of component carrier indexes includes component carrier indices associated with each downlink message in a set of downlink messages, and the set of time domain resources includes time domain resources associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages is based on scanning across the set of component carrier indexes.

[0237] The carrier aggregation manager 1235 may receive a set of downlink messages from a base station via a set of component carriers based on carrier aggregation, each of the set of component carriers being associated with a component carrier index, wherein an order of determining the set of downlink messages is based at least in part on the set of component carrier indices associated with the carrier aggregation.

[0238] The PUCCH resource manager 1249 may determine, based on the downlink control message, a first index associated with the first feedback message, the first index indicating a first frequency domain resource quantity and a second time domain resource quantity for communicating the first feedback message, wherein sending the first feedback message is based on determining the first index. In some examples, the PUCCH resource manager 1240 may determine, based on determining the first index, a second index associated with the second feedback message, wherein sending the second feedback message is based on determining the second index.

[0239] In some examples, the PUCCH resource manager 1240 may receive an indication of a first index associated with the first feedback message in a downlink control message from the base station, wherein determining the first index is based on receiving the indication. In some examples, the PUCCH resource manager 1240 may determine an uplink control channel index of the first feedback message based on the indication in the downlink control message and the CCE index in the downlink control message, wherein sending the first feedback message is based on the uplink control channel index. In some cases, the second index includes the first index.

[0240] Fig.13 A schematic diagram of a system 1300 including a device 1305 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The device 1305 may be an example of a device 1005, a device 1105, or a UE 115 as described herein or include a component of a device 805, a device 905, or a UE 115. The device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1310, an I / O controller 1315, a transceiver 1320, an antenna 1325, a memory 1330, and a processor 1340. These components may be in electronic communication via one or more buses (e.g., a bus 1345).

[0241] In some examples, the communication manager 1310 may: receive a downlink control message from a base station that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set that corresponds to the downlink message set, receive a second offset between each feedback message in the communication feedback message set from the base station, receive the first downlink message in the downlink message set, send the first feedback message in the feedback message set to the base station based on the first offset, and send the second feedback message in the feedback message set after sending the first feedback message and based on the second offset.

[0242] In some other examples, the communication manager 1310 may receive a downlink control message from a base station that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set, receive the downlink message set based on receiving the downlink control message, and send a feedback message including feedback information for each downlink message in the downlink message set to the base station based on receiving the downlink message set, wherein the feedback message is sent after the specific downlink message in the communication downlink message set and based on the offset.

[0243] I / O controller 1315 can manage input and output signals for device 1305. I / O controller 1315 can also manage peripheral devices that are not integrated into device 1305. In some cases, I / O controller 1315 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1315 can utilize an operating system, such as Or another well-known operating system. In other cases, I / O controller 1315 can represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1315 can be implemented as part of a processor. In some cases, a user can interact with device 1305 via I / O controller 1115 or via hardware components controlled by I / O controller 1315.

[0244] As described above, transceiver 1320 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, transceiver 1320 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1320 can also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0245] In some cases, a wireless device may include a single antenna 1325. However, in some cases, a device may have more than one antenna 1325, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0246] The memory 1330 may include random access memory (RAM) and read-only memory (ROM). The memory 1330 may store computer-readable, computer-executable code 1335 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 1330 may also contain, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0247] Processor 1340 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1340 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause device 1305 to perform various functions (e.g., functions or tasks that support feedback for multiple downlink transmissions).

[0248] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some cases, the code 1335 may not be directly executable by the processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0249] Fig.14 A block diagram 1400 of a device 1405 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The device 1405 can be an example of aspects of a base station 105 as described herein. The device 1405 can include a receiver 1410, a communication manager 1415, and a transmitter 1420. The device 1405 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0250] The receiver 1410 may receive information associated with various information channels (e.g., control channels, data channels, and information related to feedback for multiple downlink transmissions, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 1405. The receiver 1410 may be a reference Fig.17 Examples of various aspects of the described transceiver 1720. The receiver 1410 may utilize a single antenna or a collection of antennas.

[0251] In some examples, the communication manager 1415 may send a downlink control message to the UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set that corresponds to the downlink message set, send a second offset between each feedback message in the communication feedback message set to the UE, send the first downlink message in the downlink message set, receive the first feedback message in the feedback message set from the UE after sending the first downlink message and based on the first offset, and receive the second feedback message in the feedback message set after receiving the first feedback message and based on the second offset.

[0252] In some other examples, the communication manager 1415 may send a downlink control message to the UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; based on receiving the downlink control message, send the downlink message set; and based on sending the downlink message set, receive from the UE a feedback message including feedback information for each downlink message in the downlink message set, wherein the feedback message is received after the specific downlink message in the downlink message set and based on the offset. The communication manager 1415 may be an example of aspects of the communication manager 1710 described herein.

[0253] The communication manager 1415 or its subcomponents may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1415 or its subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA or other programmable logic device designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0254] The communication manager 1415 or its subcomponents can be physically located in a variety of locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1415 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1415 or its subcomponents can be combined with one or more other hardware components, including but not limited to I / O components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0255] Transmitter 1420 can transmit signals generated by other components of device 1405. In some examples, transmitter 1420 can be co-located with receiver 1410 in a transceiver module. For example, transmitter 1420 can be a reference Fig.17 Examples of various aspects of the described transceiver 1720. The transmitter 1420 may utilize a single antenna or a collection of antennas.

[0256] As described herein, the device 1405 may schedule multiple PDSCHs for communicating downlink messages to the UE via a single DCI. Thus, the device 1405 may cause the UE to spend less time monitoring the PDCCH and may also cause the device 1405 to communicate fewer DCI transmissions. In addition, in addition to sending the DCI, the device 1405 may also send a second offset (e.g., periodic), which may enable the device 1405 and the UE to jointly determine the number of resources that the UE may use to send feedback associated with downlink messages carried by the multiple PDSCHs.

[0257] Thus, device 1405 can receive feedback from the UE, which can increase the likelihood of successful communication between device 1405 and the UE. In some examples, based on increasing the likelihood of successful communication between device 1405 and the UE, device 1405 can perform fewer retransmissions and can therefore communicate with the UE more efficiently (e.g., using fewer resources), which can enable device 1405 to achieve higher spectral efficiency and increase capacity and data rates in the UE system served by device 1405.

[0258] Fig.15 A block diagram 1500 of a device 1505 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The device 1505 may be an example of aspects of the device 1405 or base station 105 as described herein. The device 1505 may include a receiver 1510, a communication manager 1515, and a transmitter 1535. The device 1505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0259] The receiver 1510 may receive information associated with various information channels (e.g., control channels, data channels, and information related to feedback for multiple downlink transmissions, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 1505. The receiver 1510 may be a reference Fig.17 Examples of various aspects of the described transceiver 1720. The receiver 1510 may utilize a single antenna or a collection of antennas.

[0260] The communication manager 1515 may be an example of aspects of the communication manager 1415 described herein. The communication manager 1515 may include a downlink manager 1520, an offset manager 1525, and a feedback manager 1530. The communication manager 1515 may be an example of aspects of the communication manager 1710 described herein.

[0261] In some examples, device 1505 may receive multiple feedback messages including feedback information of multiple downlink messages scheduled by a single DCI. Downlink manager 1520 may send a downlink control message to the UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set, and send the first downlink message in the downlink message set. Offset manager 1525 may send a second offset between each feedback message in the communication feedback message set to the UE. Feedback manager 1530 may receive a first feedback message in the feedback message set from the UE after sending the first downlink message and based on the first offset, and receive a second feedback message in the feedback message set after receiving the first feedback message and based on the second offset.

[0262] In some other examples, the device 1505 may receive a single feedback message including feedback information for multiple downlink messages scheduled by a single DCI. The downlink manager 1520 may send a downlink control message to the UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set, and based on receiving the downlink control message, send the downlink message set. The feedback manager 1530 may receive a feedback message including feedback information for each downlink message in the downlink message set from the UE based on sending the downlink message set, wherein the feedback message is received after the specific downlink message in the downlink message set and based on the offset.

[0263] Transmitter 1535 can transmit signals generated by other components of device 1505. In some examples, transmitter 1535 can be co-located with receiver 1510 in a transceiver module. For example, transmitter 1535 can be a reference Fig.17 Examples of various aspects of the described transceiver 1720. The transmitter 1535 may utilize a single antenna or a collection of antennas.

[0264] Fig.16A block diagram 1600 of a communication manager 1605 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The communication manager 1605 may be an example of aspects of the communication manager 1415, the communication manager 1515, or the communication manager 1710 described herein. The communication manager 1605 may include a downlink manager 1610, an offset manager 1615, a feedback manager 1620, a sequencing manager 1625, a carrier aggregation manager 1630, and a PUCCH resource manager 1635. Each of these modules may be in communication with each other directly or indirectly (e.g., via one or more buses).

[0265] The downlink manager 1610 may send a downlink control message to the UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. In some examples, the downlink manager 1610 may send the first downlink message in the downlink message set.

[0266] In some examples, downlink manager 1610 may send a downlink control message to the UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set. In some examples, downlink manager 1610 may send the downlink message set based on receiving the downlink control message. In some examples, downlink manager 1610 may determine a first resource for a first downlink message and a second resource for a second downlink message, wherein sending the first downlink message is based on determining the first resource.

[0267] In some examples, downlink manager 1610 may determine resources for communicating each downlink message in a downlink message set, wherein sending a downlink control message is based on determining the resources. In some examples, downlink manager 1610 may send a first downlink message based on determining the resources. In some examples, downlink manager 1610 may send a downlink message set to a UE based on sending a downlink control message. In some cases, the downlink control message includes a DCI.

[0268] The offset manager 1615 may send a second offset between each feedback message in the set of communication feedback messages to the UE.

[0269] In some examples, the offset manager 1615 can send the feedback message based on a single offset indicated by a single downlink control message.In some cases, the first offset includes a time domain resource interval between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set.

[0270] In some cases, the second offset includes a time domain resource interval between each feedback message in the set of communication feedback messages. In some cases, the first offset indicates a first number of time slots between a first time slot for communicating a first downlink message and a second time slot for communicating the first feedback message. In some cases, the second offset indicates a second number of time slots between a second time slot for communicating the first feedback message and a third time slot for communicating the second feedback message. In some cases, the second offset is sent via RRC signaling. In some cases, the specific downlink message is the last downlink message in the set of downlink messages.

[0271] Feedback manager 1620 may receive a first feedback message in a set of feedback messages from the UE after sending the first downlink message and based on the first offset. In some examples, feedback manager 1620 may receive a second feedback message in a set of feedback messages after receiving the first feedback message and based on the second offset.

[0272] In some examples, the feedback manager 1620 may receive a feedback message including feedback information for each downlink message in the downlink message set from the UE based on sending the downlink message set, wherein the feedback message is received after a specific downlink message in the communication downlink message set and based on an offset. In some examples, the feedback manager 1620 may determine a third resource for the first feedback message based on the first resource and the first offset, and determine a fourth resource for the second feedback message based on the third resource and the second offset, wherein receiving the first feedback message and the second feedback message is based on determining the third resource and the fourth resource.

[0273] In some examples, feedback manager 1620 may receive each remaining feedback message in the set of feedback messages from the UE based on the second offset after receiving the second feedback message.In some cases, the first resource, the second resource, the third resource, and the fourth resource include an indication of a time slot.

[0274] In some cases, each feedback message in the set of feedback messages is configured to provide a hybrid automatic repeat request acknowledgement or negative acknowledgement for a single message in the set of downlink messages. In some cases, the feedback information includes a hybrid automatic repeat request acknowledgement or negative acknowledgement.

[0275] The sequencing manager 1625 may determine an order of downlink message sets, wherein sending the downlink control message is based on determining the order of the downlink message sets. In some examples, the sequencing manager 1625 may determine a first order of time domain resource sets for communicating the downlink message sets.

[0276] In some examples, the ordering manager 1625 may determine a second order for communicating the set of feedback messages based on the first order of the set of time domain resources, wherein sending the first feedback message and the second feedback message is based on determining the second order of the set of feedback messages. In some examples, the ordering manager 1625 may determine a third order of component carrier indices within a single time domain resource in the set of time domain resources for communicating at least a portion of the set of downlink messages, wherein determining the second order of the set of feedback messages is based on determining the third order of the component carrier indices.

[0277] In some examples, the sequencing manager 1625 can determine the time domain resources and component carrier index associated with each downlink message in a downlink message set based on information included in the downlink control message, wherein determining the order of the downlink message set is based on determining the time domain resources and component carrier index associated with each downlink message.

[0278] In some examples, the sequencing manager 1625 can determine a second order for communicating a set of feedback messages based on determining time domain resources and component carrier indices associated with each downlink message in the set of downlink messages, wherein sending the first feedback message and the second feedback message is based on determining the second order of the set of feedback messages.

[0279] In some examples, the sequencing manager 1625 may scan a set of component carrier indices within a time domain resource in a set of cross-time domain resources, wherein the set of component carrier indices includes component carrier indices associated with each downlink message in a set of downlink messages, and the set of time domain resources includes time domain resources associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages is based on scanning across the set of time domain resources.

[0280] In some examples, the ordering manager 1625 may scan across a set of time domain resources within a component carrier index in a set of component carrier indices, the set of component carrier indices including component carrier indices associated with each downlink message in the set of downlink messages, and the set of time domain resources including time domain resources associated with each downlink message in the set of downlink messages, wherein determining an order of the set of downlink messages is based on scanning across the set of component carrier indices. In some cases, based on the order of the set of downlink messages, each feedback message of the set of feedback messages corresponds to a downlink message of the set of downlink messages.

[0281] The carrier aggregation manager 1630 may send a set of downlink messages to the UE via a set of component carriers based on carrier aggregation, each of the set of component carriers being associated with a component carrier index, wherein an order of the set of downlink messages is based at least in part on the set of component carrier indices associated with the carrier aggregation.

[0282] The PUCCH resource manager 1635 may determine a first index associated with the first feedback message, the first index indicating a first number of frequency-domain resources and a second number of time-domain resources used to communicate the first feedback message, wherein receiving the first feedback message is based on determining the first index.

[0283] In some examples, the PUCCH resource manager 1635 may determine a second index associated with the second feedback message based on determining the first index, wherein receiving the second feedback message is based on determining the second index. In some examples, the PUCCH resource manager 1635 may send an indication of the first index associated with the first feedback message to the UE in a downlink control message.

[0284] In some cases, the second index includes the first index.In some cases, an uplink control channel index of the first feedback message is determined based on an indication in a downlink control message and a CCE index in the downlink control message, wherein receiving the first feedback message is based on the uplink control channel index.

[0285] Fig.17 A schematic diagram of a system 1700 including a device 1705 supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The device 1705 may be an example of a device 1405, a device 1505, or a base station 105 as described herein or include a component of a device 1205, a device 1305, or a base station 105. The device 1705 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1710, a network communication manager 1715, a transceiver 1720, an antenna 1725, a memory 1730, and a processor 1740 and an inter-station communication manager 1745. These components may be in electronic communication via one or more buses (e.g., a bus 1750).

[0286] In some examples, the communication manager 1710 may send a downlink control message to the UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in a feedback message set that corresponds to the downlink message set, send a second offset between each feedback message in the communication feedback message set to the UE, send the first downlink message in the downlink message set, receive the first feedback message in the feedback message set from the UE after sending the first downlink message and based on the first offset, and receive the second feedback message in the feedback message set after receiving the first feedback message and based on the second offset.

[0287] In some other examples, the communication manager 1710 may send a downlink control message to the UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set; send a downlink message set based on receiving the downlink control message; and receive a feedback message including feedback information for each downlink message in the downlink message set from the UE based on sending the downlink message set, wherein the feedback message is received after the specific downlink message in the communication downlink message set and based on the offset.

[0288] The network communications manager 1715 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1715 may manage the delivery of data communications for client devices such as one or more UEs 115 .

[0289] As described above, the transceiver 1720 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, the transceiver 1720 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1720 can also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0290] In some cases, a wireless device may include a single antenna 1725. However, in some cases, a device may have more than one antenna 1725, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0291] The memory 1730 may include RAM, ROM, or a combination thereof. The memory 1730 may store computer readable code 1735 including instructions that, when executed by a processor (e.g., processor 1740), cause the device to perform various functions described herein. In some cases, among other things, the memory 1730 may also contain a BIOS that may control basic hardware or software operations, such as interaction with peripheral device components or devices.

[0292] Processor 1740 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1740 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1740. Processor 1740 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1730) to cause device 1705 to perform various functions (e.g., functions or tasks that support feedback for multiple downlink transmissions).

[0293] The inter-site communication manager 1745 may manage communications with other base stations 105 and may include a controller or scheduler for coordinating with other base stations 105 to control communications with UE 115. For example, the inter-site communication manager 1745 may coordinate scheduling of transmissions to UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1745 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0294] The code 1735 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1735 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some cases, the code 1735 may not be directly executable by the processor 1740, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0295] Fig.18 A block diagram illustrating a method 1800 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1800 may be implemented by a UE 115 or a component thereof as described herein. Figures 10 to 13The communication manager described in the embodiment of the present invention performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0296] At 1805, the UE may receive from a base station a downlink control message that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0297] At 1810, the UE may receive from the base station a second offset between each feedback message in the set of communication feedback messages. The operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed as described in reference to Figures 10 to 13 Describes the offset manager implementation.

[0298] At 1815, the UE may receive a first downlink message in a set of downlink messages. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0299] At 1820, the UE may send a first feedback message in the feedback message set to the base station based on the first offset. The operation of 1820 may be performed according to the methods described herein. In some examples, various aspects of the operation of 1820 may be performed as described in reference to Figures 10 to 13 Describes the implementation of the Feedback Manager.

[0300] At 1825, the UE may send a second feedback message in the feedback message set after sending the first feedback message and based on the second offset. The operations of 1825 may be performed according to the methods described herein. In some examples, aspects of the operations of 1825 may be performed as described in reference to Figures 10 to 13 Describes the implementation of the Feedback Manager.

[0301] Fig.19 A block diagram illustrating a method 1900 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1900 may be implemented by a UE 115 or a component thereof as described herein. Figures 10 to 13The communication manager described in the embodiment of the present invention performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0302] At 1905, the UE may receive from a base station a downlink control message that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0303] At 1910, the UE may determine an order of a downlink message set based on receiving a downlink control message, wherein each feedback message in the feedback message set corresponds to a downlink message in the downlink message set based on the order of the downlink message set. The operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be performed as described in reference to Figures 10 to 13 Describes the sort manager implementation.

[0304] At 1915, the UE may receive from the base station a second offset between each feedback message in the set of communication feedback messages. The operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed as described in reference to Figures 10 to 13 Describes the offset manager implementation.

[0305] At 1920, the UE may receive a first downlink message in a set of downlink messages. The operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0306] At 1925, the UE may send a first feedback message in the feedback message set to the base station based on the first offset. The operation of 1925 may be performed according to the methods described herein. In some examples, various aspects of the operation of 1925 may be performed as described in reference to Figures 10 to 13 Describes the implementation of the Feedback Manager.

[0307] At 1930, the UE may send a second feedback message in the feedback message set after sending the first feedback message and based on the second offset. The operations of 1930 may be performed according to the methods described herein. In some examples, aspects of the operations of 1930 may be performed as described in reference to Figures 10 to 13Describes the implementation of the Feedback Manager.

[0308] Fig. 20 A block diagram illustrating a method 2000 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 2000 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 2000 may be implemented by a UE 115 or a component thereof as described herein. Figures 10 to 13 The communication manager described in the embodiment of the present invention performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0309] At 2005, the UE may receive from a base station a downlink control message that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. The operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0310] At 2010, the UE may receive from the base station a second offset between each feedback message in the set of communication feedback messages. The operations of 2010 may be performed according to the methods described herein. In some examples, various aspects of the operations of 2010 may be performed as described in reference to Figures 10 to 13 Describes the offset manager implementation.

[0311] At 2015, the UE may receive a first downlink message in a set of downlink messages. The operations of 2015 may be performed according to the methods described herein. In some examples, aspects of the operations of 2015 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0312] At 2020, the UE may send a first feedback message in the feedback message set to the base station based on the first offset. The operation of 2020 may be performed according to the method described herein. In some examples, various aspects of the operation of 2020 may be performed as described in reference to Figures 10 to 13 Describes the implementation of the Feedback Manager.

[0313] At 2025, the UE may send a second feedback message in the feedback message set after sending the first feedback message and based on the second offset. The operation of 2025 may be performed according to the methods described herein. In some examples, aspects of the operation of 2025 may be performed as described in reference to Figures 10 to 13 Describes the implementation of the Feedback Manager.

[0314] At 2030, the UE may send each remaining feedback message in the feedback message set to the base station based on the second offset after sending the second feedback message. The operation of 2030 may be performed according to the method described herein. In some examples, various aspects of the operation of 2030 may be performed as described in reference to Figures 10 to 13 Describes the implementation of the Feedback Manager.

[0315] Fig.21 A block diagram illustrating a method 2100 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 2100 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 2100 may be implemented by a UE 115 or components thereof as described herein. Figures 10 to 13 The communication manager described in the embodiment of the present invention performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0316] At 2105, the UE may receive from the base station a downlink control message that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set. The operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0317] At 2110, the UE may receive a set of downlink messages based on receiving the downlink control message. The operations of 2110 may be performed according to the methods described herein. In some examples, aspects of the operations of 2110 may be performed as described in reference to Figures 10 to 13 Describes the downlink manager implementation.

[0318] At 2115, the UE may send a feedback message including feedback information for each downlink message in the downlink message set to the base station based on receiving the downlink message set, wherein the feedback message is sent after a specific downlink message in the communication downlink message set and based on an offset. The operation of 2115 may be performed according to the method described herein. In some examples, various aspects of the operation of 2115 may be performed as described in reference to Figures 10 to 13 Describes the implementation of the Feedback Manager.

[0319] Fig. 22 A block diagram illustrating a method 2200 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 2200 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2200 may be implemented by a base station 105 or components thereof as described herein. Figures 14 to 17The communication manager described in the present invention is executed. In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0320] At 2205, the base station may send a downlink control message to the UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. The operations of 2205 may be performed according to the methods described herein. In some examples, aspects of the operations of 2205 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0321] At 2210, the base station may send a second offset between each feedback message in the set of communication feedback messages to the UE. The operations of 2210 may be performed according to the methods described herein. In some examples, various aspects of the operations of 2210 may be performed as described in reference to Figures 14 to 17 Describes the offset manager implementation.

[0322] At 2215, the base station may send a first downlink message in the set of downlink messages. The operations of 2215 may be performed according to the methods described herein. In some examples, aspects of the operations of 2215 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0323] At 2220, the base station may receive a first feedback message in a set of feedback messages from the UE after sending the first downlink message and based on the first offset. The operations of 2220 may be performed according to the methods described herein. In some examples, aspects of the operations of 2220 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0324] At 2225, the base station may receive a second feedback message in the feedback message set after receiving the first feedback message and based on the second offset. The operation of 2225 may be performed according to the methods described herein. In some examples, various aspects of the operation of 2225 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0325] Fig.23 A block diagram illustrating a method 2300 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 2300 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2300 may be implemented by a base station 105 or components thereof as described herein. Figures 14 to 17The communication manager described in the present invention is executed. In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0326] At 2305, the base station may send a downlink control message to the UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. The operations of 2305 may be performed according to the methods described herein. In some examples, aspects of the operations of 2305 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0327] At 2310, the base station may determine an order of downlink message sets, wherein sending the downlink control message is based on determining the order of the downlink message sets. The operations of 2310 may be performed according to the methods described herein. In some examples, aspects of the operations of 2310 may be performed as described in reference to Figures 14 to 17 Describes the sort manager implementation.

[0328] At 2315, the base station may send a second offset between each feedback message in the set of communication feedback messages to the UE. The operations of 2315 may be performed according to the methods described herein. In some examples, various aspects of the operations of 2315 may be performed as described in reference to Figures 14 to 17 Describes the offset manager implementation.

[0329] At 2320, the base station may send a first downlink message in the set of downlink messages. The operations of 2320 may be performed according to the methods described herein. In some examples, aspects of the operations of 2320 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0330] At 2325, the base station may receive a first feedback message in the feedback message set from the UE after sending the first downlink message and based on the first offset. The operations of 2325 may be performed according to the methods described herein. In some examples, aspects of the operations of 2325 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0331] At 2330, the base station may receive a second feedback message in the feedback message set after receiving the first feedback message and based on the second offset. The operations of 2330 may be performed according to the methods described herein. In some examples, aspects of the operations of 2330 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0332] Fig.24 A block diagram illustrating a method 2400 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 2400 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2400 may be implemented by a base station 105 or components thereof as described herein. Figures 14 to 17 The communication manager described in the present invention is executed. In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0333] At 2405, the base station may send a downlink control message to the UE that schedules a downlink message set and indicates a first offset between a first downlink message in the communication downlink message set and a first feedback message in the communication feedback message set corresponding to the downlink message set. The operations of 2405 may be performed according to the methods described herein. In some examples, aspects of the operations of 2405 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0334] At 2410, the base station may send a second offset between each feedback message in the set of communication feedback messages to the UE. The operations of 2410 may be performed according to the methods described herein. In some examples, aspects of the operations of 2410 may be performed as described in reference to Figures 14 to 17 Describes the offset manager implementation.

[0335] At 2415, the base station may send a first downlink message in the set of downlink messages. The operations of 2415 may be performed according to the methods described herein. In some examples, aspects of the operations of 2415 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0336] At 2420, the base station may receive a first feedback message in a set of feedback messages from the UE after sending the first downlink message and based on the first offset. The operations of 2420 may be performed according to the methods described herein. In some examples, aspects of the operations of 2420 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0337] At 2425, the base station may receive a second feedback message in the feedback message set after receiving the first feedback message and based on the second offset. The operations of 2425 may be performed according to the methods described herein. In some examples, aspects of the operations of 2425 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0338] At 2430, the base station may receive each remaining feedback message in the feedback message set from the UE based on the second offset after receiving the second feedback message. The operation of 2430 may be performed according to the methods described herein. In some examples, various aspects of the operation of 2430 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0339] Fig.25 A block diagram illustrating a method 2500 for supporting feedback for multiple downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 2500 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2500 may be implemented by a base station 105 or components thereof as described herein. Figures 14 to 17 The communication manager described in the present invention is executed. In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0340] At 2505, the base station may send a downlink control message to the UE that schedules a downlink message set and indicates an offset between a specific downlink message in the downlink message set and a feedback message corresponding to the downlink message set. The operations of 2505 may be performed according to the methods described herein. In some examples, aspects of the operations of 2505 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0341] At 2510, the base station may send a downlink message set based on receiving the downlink control message. The operations of 2510 may be performed according to the methods described herein. In some examples, aspects of the operations of 2510 may be performed as described in reference to Figures 14 to 17 Describes the downlink manager implementation.

[0342] At 2515, the base station may receive a feedback message including feedback information for each downlink message in the downlink message set from the UE based on sending the downlink message set, wherein the feedback message is received after a specific downlink message in the communication downlink message set and based on an offset. The operations of 2515 may be performed according to the methods described herein. In some examples, aspects of the operations of 2515 may be performed as described in reference to Figures 14 to 17 Describes the implementation of the Feedback Manager.

[0343] It should be noted that the methods described herein describe possible implementations, that operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0344] Example 1: A method for performing wireless communications at a UE, comprising: receiving a downlink control message from a base station that schedules multiple downlink messages and indicates a first offset between a first downlink message among the multiple downlink messages and a first feedback message among multiple feedback messages corresponding to the multiple downlink messages; receiving a second offset between each of the multiple feedback messages from the base station; receiving a first downlink message among the multiple downlink messages; sending a first feedback message among the multiple feedback messages to the base station based at least in part on the first offset; and sending a second feedback message among the multiple feedback messages after sending the first feedback message and based at least in part on the second offset.

[0345] Example 2: The method according to Example 1 also includes: determining an order of multiple downlink messages based at least in part on received downlink control messages, wherein each feedback message in the multiple feedback messages corresponds to a downlink message in the multiple downlink messages based at least in part on the order of the multiple downlink messages.

[0346] Example 3: A method according to Example 2, wherein determining the order of multiple downlink messages includes: determining a first order of multiple time domain resources for communicating the multiple downlink messages; and determining a second order for communicating multiple feedback messages based at least in part on the first order of the multiple time domain resources, wherein sending the first feedback message and the second feedback message is at least in part based on determining the second order of the multiple feedback messages.

[0347] Example 4: The method according to Example 3 also includes: determining a third order of component carrier indices within a single time domain resource among multiple time domain resources for communicating at least a portion of multiple downlink messages, wherein determining the second order of multiple feedback messages is at least partially based on determining the third order of component carrier indices.

[0348] Example 5: The method according to Example 2 also includes: determining the time domain resources and component carrier index associated with each downlink message in a plurality of downlink messages based on information included in the downlink control message, wherein determining the order of the plurality of downlink messages is at least partially based on determining the time domain resources and component carrier index associated with each downlink message; and determining a second order for communicating a plurality of feedback messages based at least partially on determining the time domain resources and component carrier index associated with each downlink message in the plurality of downlink messages, wherein sending the first feedback message and the second feedback message is at least partially based on determining the second order of the plurality of feedback messages.

[0349] Example 6: The method according to Example 5 further includes: scanning multiple component carrier indexes within a time domain resource across multiple time domain resources, the multiple component carrier indexes include component carrier indexes associated with each downlink message in multiple downlink messages, and the multiple time domain resources include time domain resources associated with each downlink message in the multiple downlink messages, wherein determining the order of the multiple downlink messages is at least partially based on scanning across the multiple time domain resources.

[0350] Example 7: The method according to Example 5 further includes: scanning multiple time domain resources within a component carrier index across multiple component carrier indexes, the multiple component carrier indexes include component carrier indexes associated with each downlink message in multiple downlink messages, and the multiple time domain resources include time domain resources associated with each downlink message in the multiple downlink messages, wherein determining the order of the multiple downlink messages is at least partially based on scanning across the multiple component carrier indexes.

[0351] Example 8: The method according to Example 2 also includes: receiving multiple downlink messages from a base station via multiple component carriers, at least partially based on carrier aggregation, each of the multiple component carriers is associated with a component carrier index, wherein determining the order of the multiple downlink messages is at least partially based on the multiple component carrier indices associated with the carrier aggregation.

[0352] Example 9: The method according to any one of Examples 1 to 8 further includes: determining a first resource for a first downlink message and a second resource for a second downlink message, wherein receiving the first downlink message is at least partially based on determining the first resource; and determining a third resource for a first feedback message based at least partially on the first resource and the first offset, and determining a fourth resource for a second feedback message based at least partially on the third resource and the second offset, wherein sending the first feedback message and the second feedback message is at least partially based on determining the third resource and the fourth resource.

[0353] Example 10: The method of Example 9, wherein the first resource, the second resource, the third resource, and the fourth resource include an indication of a time slot.

[0354] Example 11: The method according to any one of Examples 1 to 10 further includes: determining a first index associated with a first feedback message based at least in part on a downlink control message, the first index indicating a first number of frequency domain resources and a second number of time domain resources used to communicate the first feedback message, wherein sending the first feedback message is at least in part based on determining the first index; and determining a second index associated with a second feedback message based at least in part on determining the first index, wherein sending the second feedback message is at least in part based on determining the second index.

[0355] Example 12: The method of Example 11, wherein the second index includes the first index.

[0356] Example 13: According to the method of Example 11, it also includes: receiving an indication of a first index associated with the first feedback message in a downlink control message from the base station, wherein determining the first index is at least partially based on receiving the indication.

[0357] Example 14: A method according to Example 13, wherein determining the first index includes: determining an uplink control channel index of the first feedback message based at least in part on an indication in a downlink control message and a CCE index in the downlink control message, wherein sending the first feedback message is based at least in part on the uplink control channel index.

[0358] Example 15: The method according to any one of Examples 1 to 14 further includes: determining resources for communicating each of a plurality of downlink messages based at least in part on a downlink control message, wherein receiving a first downlink message is based at least in part on determining the resources.

[0359] Example 16: The method according to any one of Examples 1 to 15 further includes: after sending the second feedback message, sending each remaining feedback message in the multiple feedback messages to the base station at least partially based on the second offset.

[0360] Example 17: The method according to any one of Examples 1 to 16 also includes: receiving multiple downlink messages from the base station at least in part based on receiving the downlink control message.

[0361] Example 18: The method of any one of Examples 1 to 17, wherein each of the plurality of feedback messages is configured to provide a hybrid automatic repeat request acknowledgment or a negative acknowledgment for a single message of the plurality of downlink messages.

[0362] Example 19: A method according to any one of Examples 1 to 18, wherein the first offset comprises a time domain resource interval between a first downlink message of a plurality of downlink messages and a first feedback message of a plurality of feedback messages.

[0363] Example 20: A method according to any one of Examples 1 to 19, wherein the second offset comprises a time domain resource interval between communicating each feedback message of the plurality of feedback messages.

[0364] Example 21: A method according to any one of Examples 1 to 20, wherein: the first offset indicates a first number of time slots between a first time slot for communicating a first downlink message and a second time slot for communicating a first feedback message; and the second offset indicates a second number of time slots between the second time slot for communicating the first feedback message and a third time slot for communicating the second feedback message.

[0365] Example 22: A method according to any one of Examples 1 to 21, wherein the downlink control message includes downlink control information.

[0366] Example 23: A method according to any one of Examples 1 to 22, wherein the second offset is received via RRC signaling.

[0367] Example 24: A method for performing wireless communications at a UE, comprising: receiving a downlink control message from a base station that schedules multiple downlink messages and indicates an offset between a specific downlink message in the multiple downlink messages and a feedback message corresponding to the multiple downlink messages; receiving multiple downlink messages based at least in part on receiving the downlink control message; and sending a feedback message including feedback information for each of the multiple downlink messages to the base station based at least in part on receiving the multiple downlink messages, wherein the feedback message is sent after communicating the specific downlink message in the multiple downlink messages and based at least in part on the offset.

[0368] Example 25: The method of Example 24, wherein the feedback information comprises a hybrid automatic repeat request acknowledgement or a negative acknowledgement.

[0369] Example 26: A method according to any one of Example 24 or Example 25, wherein the specific downlink message is the last downlink message of multiple downlink messages.

[0370] Example 27: A method according to any one of Examples 24 to 26, wherein sending the feedback message is based at least in part on a single offset indicated by a single downlink control message.

[0371] Example 28: A method according to any one of Examples 24 to 27, wherein the downlink control message includes downlink control information.

[0372] Example 29: A method for performing wireless communications at a base station, comprising: sending a downlink control message to a UE that schedules multiple downlink messages and indicates a first offset between a first downlink message among the multiple downlink messages and a first feedback message among multiple feedback messages corresponding to the multiple downlink messages; sending a second offset between each of the multiple feedback messages to the UE; sending a first downlink message among the multiple downlink messages; receiving a first feedback message among the multiple feedback messages from the UE after sending the first downlink message and at least partially based on the first offset; and receiving a second feedback message among the multiple feedback messages after receiving the first feedback message and at least partially based on the second offset.

[0373] Example 30: The method of Example 29 further includes: determining an order of multiple downlink messages, wherein sending the downlink control message is at least partially based on determining the order of the multiple downlink messages.

[0374] Example 31: The method of Example 30, wherein each of the plurality of feedback messages corresponds to a downlink message of the plurality of downlink messages based at least in part on an order of the plurality of downlink messages.

[0375] Example 32: A method according to Example 31, wherein determining the order of multiple downlink messages includes: determining a first order of multiple time domain resources for communicating the multiple downlink messages; and determining a second order for communicating multiple feedback messages based at least in part on the first order of the multiple time domain resources, wherein sending the first feedback message and the second feedback message is at least in part based on determining the second order of the multiple feedback messages.

[0376] Example 33: The method according to Example 32 also includes: determining a third order of component carrier indices within a single time domain resource among multiple time domain resources for communicating at least a portion of multiple downlink messages, wherein determining the second order of multiple feedback messages is at least partially based on determining the third order of component carrier indices.

[0377] Example 34: The method according to Example 31 further includes: determining the time domain resources and component carrier index associated with each downlink message in a plurality of downlink messages based on information included in the downlink control message, wherein determining the order of the plurality of downlink messages is at least partially based on determining the time domain resources and component carrier index associated with each downlink message; and determining a second order for communicating a plurality of feedback messages based at least partially on determining the time domain resources and component carrier index associated with each downlink message in the plurality of downlink messages, wherein sending the first feedback message and the second feedback message is at least partially based on determining the second order of the plurality of feedback messages.

[0378] Example 35: The method according to Example 34 further includes: scanning multiple component carrier indexes within a time domain resource across multiple time domain resources, the multiple component carrier indexes include component carrier indexes associated with each downlink message in a plurality of downlink messages, and the multiple time domain resources include time domain resources associated with each downlink message in a plurality of downlink messages, wherein determining the order of the multiple downlink messages is at least partially based on scanning across the multiple time domain resources.

[0379] Example 36: The method according to Example 34 further includes: scanning multiple time domain resources within a component carrier index across multiple component carrier indexes, the multiple component carrier indexes include component carrier indexes associated with each downlink message in a plurality of downlink messages, and the multiple time domain resources include time domain resources associated with each downlink message in a plurality of downlink messages, wherein determining the order of the multiple downlink messages is at least partially based on scanning across the multiple component carrier indexes.

[0380] Example 37: The method according to Example 30 also includes: sending multiple downlink messages to the UE via multiple component carriers, at least partially based on carrier aggregation, each of the multiple component carriers is associated with a component carrier index, wherein the order of the multiple downlink messages is at least partially based on the multiple component carrier indices associated with the carrier aggregation.

[0381] Example 38: The method according to any one of Examples 29 to Example 37 further includes: determining a first resource for a first downlink message and a second resource for a second downlink message, wherein sending the first downlink message is at least partially based on determining the first resource; and determining a third resource for a first feedback message based at least partially on the first resource and the first offset, and determining a fourth resource for a second feedback message based at least partially on the third resource and the second offset, wherein receiving the first feedback message and the second feedback message is at least partially based on determining the third resource and the fourth resource.

[0382] Example 39: The method of Example 38, wherein the first resource, the second resource, the third resource, and the fourth resource include an indication of a time slot.

[0383] Example 40: The method according to any one of Examples 29 to Example 39 further includes: determining a first index associated with a first feedback message, the first index indicating a first number of frequency domain resources and a second number of time domain resources used to communicate the first feedback message, wherein receiving the first feedback message is at least partially based on determining the first index; and determining a second index associated with a second feedback message at least partially based on determining the first index, wherein receiving the second feedback message is at least partially based on determining the second index.

[0384] Example 41: The method of Example 40, wherein the second index includes the first index.

[0385] Example 42: The method according to Example 40 also includes: sending an indication of a first index associated with the first feedback message to the UE in a downlink control message.

[0386] Example 43: A method according to Example 42, wherein an uplink control channel index of the first feedback message is determined at least in part based on an indication in a downlink control message and a CCE index in the downlink control message, wherein receiving the first feedback message is at least in part based on the uplink control channel index.

[0387] Example 44: The method according to any one of Examples 29 to Example 43 also includes: determining resources for communicating each downlink message in a plurality of downlink messages, wherein sending the downlink control message is at least partially based on determining the resources.

[0388] Example 45: The method of Example 44, wherein sending the first downlink message is based at least in part on determining resources.

[0389] Example 46: The method according to any one of Examples 29 to Example 45 further includes: after receiving the second feedback message, receiving each remaining feedback message in the plurality of feedback messages from the UE based at least in part on the second offset.

[0390] Example 47: The method according to any one of Examples 29 to Example 46 also includes: sending multiple downlink messages to the UE based at least in part on sending a downlink control message.

[0391] Example 48: A method according to any one of Examples 29 to 47, wherein each of the plurality of feedback messages is configured to provide a hybrid automatic repeat request acknowledgment or a negative acknowledgment for a single message of the plurality of downlink messages.

[0392] Example 49: A method according to any one of Examples 29 to 48, wherein the first offset includes a time domain resource interval between a first downlink message among a plurality of downlink messages and a first feedback message among a plurality of feedback messages.

[0393] Example 50: A method according to any one of Examples 29 to 49, wherein the second offset includes a time domain resource interval between communicating each feedback message in a plurality of feedback messages.

[0394] Example 51: A method according to any one of Examples 29 to Example 50, wherein: the first offset indicates a first number of time slots between a first time slot for communicating a first downlink message and a second time slot for communicating a first feedback message; and the second offset indicates a second number of time slots between the second time slot for communicating the first feedback message and a third time slot for communicating the second feedback message.

[0395] Example 52: A method according to any one of Examples 29 to 51, wherein the downlink control message includes downlink control information.

[0396] Example 53: A method according to any one of Examples 29 to 52, wherein the second offset is sent via RRC signaling.

[0397] Example 54: A method for performing wireless communications at a base station, comprising: sending a downlink control message to a UE that schedules multiple downlink messages and indicates an offset between a specific downlink message in the multiple downlink messages and a feedback message corresponding to the multiple downlink messages; sending multiple downlink messages based at least in part on receiving the downlink control message; and receiving a feedback message from the UE that includes feedback information for each downlink message in the multiple downlink messages based at least in part on sending the multiple downlink messages, wherein the feedback message is received after communicating the specific downlink message in the multiple downlink messages and based at least in part on the offset.

[0398] Example 55: The method of Example 54, wherein the feedback information comprises a hybrid automatic repeat request acknowledgement or a negative acknowledgement.

[0399] Example 56: A method according to any one of Example 54 or Example 55, wherein the particular downlink message is the last downlink message of multiple downlink messages.

[0400] Example 57: A method according to any one of Examples 54 to 56, wherein sending the feedback message is based at least in part on a single offset indicated by a single downlink control message.

[0401] Example 58: A method according to any one of Examples 54 to 57, wherein the downlink control message includes downlink control information.

[0402] Example 59: An apparatus comprising at least one component for performing the method of any one of Examples 1 to 23.

[0403] Example 60: An apparatus for wireless communication, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor, so that the apparatus performs the method of any one of Examples 1 to 23.

[0404] Example 61: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of any one of Examples 1 to 23.

[0405] Example 62: An apparatus comprising at least one component for performing the method of any one of Examples 24 to 28.

[0406] Example 63: An apparatus for wireless communication, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of Examples 24 to 28.

[0407] Example 64: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of any one of Examples 24 to 28.

[0408] Example 65: An apparatus comprising at least one component for performing the method of any one of Examples 29 to 53.

[0409] Example 66: An apparatus for wireless communication, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of Examples 29 to 53.

[0410] Example 67: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of any one of Examples 54 to 58.

[0411] Example 68: An apparatus comprising at least one component for performing the method of any one of Examples 54 to 58.

[0412] Example 69: An apparatus for wireless communication, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of Examples 54 to 58.

[0413] Example 70: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of any one of Examples 54 to 58.

[0414] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may be applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0415] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0416] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0417] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or sent via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Features that implement the functions may also be physically located in various locations, including being distributed so that portions of the functions are implemented in different physical locations.

[0418] Computer-readable media include both non-transitory computer storage media and communication media, and communication media include any media that facilitates the transfer of computer programs from one place to another.Non-transitory storage media can be any available media that can be accessed by a general or special computer.As an example and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or can be used to carry or store required program code components in the form of instructions or data structures and can be accessed by a general or special computer or a general or special processor.Any other non-transitory medium.Moreover, any connection is properly referred to as computer-readable media.For example, if software is sent from a website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of computer-readable media. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0419] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items terminated by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0420] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference that distinguishes between similar components. If only the first reference number is used in the specification, the specification applies to any of the similar components having the same first reference number, regardless of the second or other subsequent reference numbers.

[0421] The description presented herein in conjunction with the accompanying drawings describes exemplary configurations and does not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "superior to other examples." In order to provide an understanding of the described technology, the detailed description includes specific details. However, these technologies may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0422] The description herein is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but will be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment UE, comprising: receiving a single downlink control message from a base station, the single downlink control message scheduling a plurality of downlink messages and the single downlink control message indicating a first offset between communicating a first downlink message of the plurality of downlink messages and communicating a first feedback message of a plurality of feedback messages corresponding to the plurality of downlink messages; receiving, from the base station, a second offset between communicating each of the plurality of feedback messages; receiving the first downlink message of the plurality of downlink messages; sending the first feedback message of the plurality of feedback messages to the base station based at least in part on the first offset; as well as A second feedback message of the plurality of feedback messages is sent after sending the first feedback message and based at least in part on the second offset.

2. The method according to claim 1, further comprising: Based at least in part on receiving the single downlink control message, an order of the multiple downlink messages is determined, wherein each of the multiple feedback messages corresponds to a downlink message of the multiple downlink messages based at least in part on the order of the multiple downlink messages.

3. The method according to claim 2, wherein: Determining the order of the plurality of downlink messages comprises: determining a first order of a plurality of time domain resources for communicating the plurality of downlink messages; and Based at least in part on the first order of the plurality of time-domain resources, a second order for communicating the plurality of feedback messages is determined, wherein sending the first feedback message and the second feedback message is based at least in part on determining the second order of the plurality of feedback messages.

4. The method according to claim 3, further comprising: Determine a third order of component carrier indices within a single time domain resource of the plurality of time domain resources used to communicate at least a portion of the plurality of downlink messages, wherein determining the second order of the plurality of feedback messages is based at least in part on determining the third order of component carrier indices.

5. The method according to claim 2, further comprising: determining, based on information included in the single downlink control message, a time domain resource and a component carrier index associated with each downlink message of the plurality of downlink messages, wherein determining the order of the plurality of downlink messages is based at least in part on determining the time domain resource and the component carrier index associated with each downlink message; as well as Determine a second order for communicating the plurality of feedback messages based at least in part on determining the time domain resources and the component carrier index associated with each of the plurality of downlink messages, wherein sending the first feedback message and the second feedback message is based at least in part on determining the second order of the plurality of feedback messages.

6. The method according to claim 5, further comprising: Scanning across a plurality of component carrier indices within a time domain resource among a plurality of time domain resources, the plurality of component carrier indices including the component carrier index associated with each downlink message among the plurality of downlink messages, and the plurality of time domain resources including the time domain resources associated with each downlink message among the plurality of downlink messages, wherein determining the order of the plurality of downlink messages is based at least in part on scanning across the plurality of time domain resources.

7. The method according to claim 5, further comprising: Scanning across a plurality of time domain resources within a component carrier index of a plurality of component carrier indexes, the plurality of component carrier indexes including the component carrier index associated with each of the plurality of downlink messages, and the plurality of time domain resources including the time domain resources associated with each of the plurality of downlink messages, wherein determining the order of the plurality of downlink messages is based at least in part on scanning across the plurality of component carrier indexes.

8. The method according to claim 2, further comprising: The plurality of downlink messages are received from the base station over a plurality of component carriers based at least in part on carrier aggregation, each of the plurality of component carriers being associated with a component carrier index, wherein determining the order of the plurality of downlink messages is based at least in part on the plurality of component carrier indices associated with the carrier aggregation.

9. The method according to claim 1, further comprising: determining a first resource for the first downlink message and a second resource for a second downlink message, wherein receiving the first downlink message is based at least in part on determining the first resource; as well as A third resource for the first feedback message is determined based at least in part on the first resource and the first offset, and a fourth resource for the second feedback message is determined based at least in part on the third resource and the second offset, wherein sending the first feedback message and the second feedback message is based at least in part on determining the third resource and the fourth resource.

10. The method according to claim 9, wherein: The first resource, the second resource, the third resource, and the fourth resource include an indication of a time slot.

11. The method according to claim 1, further comprising: determining, based at least in part on the single downlink control message, a first index associated with the first feedback message, the first index indicating a first number of frequency-domain resources and a second number of time-domain resources for communicating the first feedback message, wherein sending the first feedback message is based at least in part on determining the first index; and Based at least in part on determining the first index, a second index associated with the second feedback message is determined, wherein sending the second feedback message is based at least in part on determining the second index.

12. The method according to claim 11, wherein: The second index includes the first index.

13. The method according to claim 11, further comprising: An indication of the first index associated with the first feedback message is received from the base station in the single downlink control message, wherein determining the first index is based at least in part on receiving the indication.

14. The method according to claim 13, wherein: Determining the first index includes: An uplink control channel index of the first feedback message is determined based at least in part on the indication in the single downlink control message and a starting control channel element (CCE) index in the single downlink control message, wherein sending the first feedback message is based at least in part on the uplink control channel index.

15. The method according to claim 1, further comprising: Based at least in part on the single downlink control message, resources for communicating each of the plurality of downlink messages are determined, wherein receiving the first downlink message is based at least in part on determining the resources.

16. The method according to claim 1, further comprising: After sending the second feedback message, each remaining feedback message of the plurality of feedback messages is sent to the base station based at least in part on the second offset.

17. The method according to claim 1, further comprising: The plurality of downlink messages are received from the base station based at least in part on receiving the single downlink control message.

18. The method according to claim 1, wherein: Each feedback message of the plurality of feedback messages is configured to provide a hybrid automatic repeat request acknowledgement or a negative acknowledgement for a single message of the plurality of downlink messages.

19. The method according to claim 1, wherein: The first offset comprises a time domain resource interval between communicating the first downlink message of the plurality of downlink messages and communicating the first feedback message of the plurality of feedback messages.

20. The method according to claim 1, wherein: The second offset comprises a time domain resource interval between communicating each feedback message of the plurality of feedback messages.

21. The method of claim 1, wherein: The first offset indicates a first number of time slots between a first time slot used to communicate the first downlink message and a second time slot used to communicate the first feedback message; and The second offset indicates a second number of time slots between the second time slot used to communicate the first feedback message and a third time slot used to communicate the second feedback message.

22. The method according to claim 1, wherein: The second offset is received via Radio Resource Control, RRC signaling.

23. A method for wireless communication at a user equipment (UE), comprising: receiving a single downlink control message from a base station, the single downlink control message scheduling a plurality of downlink messages and the single downlink control message indicating an offset between a particular downlink message of the plurality of downlink messages and a feedback message corresponding to the plurality of downlink messages; receiving the plurality of downlink messages based at least in part on receiving the single downlink control message; as well as At least partially based on receiving the multiple downlink messages, sending the feedback message to the base station, the feedback message including feedback information for each downlink message in the multiple downlink messages, wherein the feedback message is sent after communicating the specific downlink message in the multiple downlink messages and at least partially based on the offset.

24. The method according to claim 23, wherein: The feedback information includes a hybrid automatic repeat request confirmation or a negative confirmation.

25. The method according to claim 23, wherein: The specific downlink message is a last downlink message among the plurality of downlink messages.

26. The method of claim 23, wherein: Sending the feedback message is based at least in part on a single offset indicated by a single downlink control message.

27. A method for wireless communication at a base station, comprising: sending a single downlink control message to a user equipment UE, the single downlink control message scheduling a plurality of downlink messages and the single downlink control message indicating a first offset between communicating a first downlink message of the plurality of downlink messages and communicating a first feedback message of a plurality of feedback messages corresponding to the plurality of downlink messages; sending a second offset between each feedback message in the plurality of feedback messages to the UE; sending the first downlink message of the plurality of downlink messages; receiving, after sending the first downlink message and based at least in part on the first offset, the first feedback message of the plurality of feedback messages from the UE; as well as A second feedback message of the plurality of feedback messages is received after receiving the first feedback message and based at least in part on the second offset.

28. The method according to claim 27, further comprising: determining an order of the plurality of downlink messages, wherein sending the single downlink control message is based at least in part on determining the order of the plurality of downlink messages; as well as The plurality of downlink messages are sent to the UE over a plurality of component carriers based at least in part on carrier aggregation, each of the plurality of component carriers being associated with a component carrier index, wherein the order of the plurality of downlink messages is based at least in part on a plurality of component carrier indices associated with the carrier aggregation.

29. A method for wireless communication at a base station, comprising: Sending a single downlink control message to a user equipment UE, the single downlink control message scheduling a plurality of downlink messages, and the single downlink control message indicating an offset between a specific downlink message of the plurality of downlink messages and a feedback message corresponding to the plurality of downlink messages; sending the plurality of downlink messages based at least in part on receiving the single downlink control message; as well as The feedback message is received from the UE based at least in part on sending the multiple downlink messages, the feedback message including feedback information for each downlink message in the multiple downlink messages, wherein the feedback message is received after communicating the particular downlink message in the multiple downlink messages and based at least in part on the offset.

30. The method of claim 29, wherein: Sending the feedback message is based at least in part on a single offset indicated by a single downlink control message.

31. An apparatus for wireless communication at a user equipment UE, comprising: Means for performing the method according to any one of claims 1-22.

32. An apparatus for wireless communication at a user equipment UE, comprising: Means for performing a method according to any one of claims 23-26.

33. An apparatus for wireless communication at a base station, comprising: Means for performing a method according to any of claims 27-28.

34. An apparatus for wireless communication at a base station, comprising: Means for performing a method according to any of claims 29-30.

35. An apparatus for wireless communication at a user equipment UE, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to perform the method according to any one of claims 1-22.

36. An apparatus for wireless communication at a user equipment UE, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to perform the method according to any one of claims 23-26.

37. An apparatus for wireless communication at a base station, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to perform the method according to any one of claims 27-28.

38. An apparatus for wireless communication at a base station, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to perform the method according to any one of claims 29-30.

39. A non-transitory computer-readable medium storing one or more instructions for wireless communication, which, when executed by one or more processors of a user equipment (UE), causes the one or more processors to perform the method according to any one of claims 1-26.

40. A non-transitory computer-readable medium storing one or more instructions for wireless communication, which, when executed by one or more processors of a base station, causes the one or more processors to perform the method according to any one of claims 27-30.

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