Logical channel resource allocation for latency-sensitive traffic
Resource allocation schemes prioritize lower priority channels at risk of latency failure and use bucket size limits to enhance latency target satisfaction and spectral efficiency in wireless communication systems.
Patent Information
- Application Number
- PCT/CN2024/089702
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-10-30
AI Technical Summary
Existing wireless communication systems face challenges in efficiently allocating resources to latency-sensitive traffic, particularly when lower priority traffic is at risk of failing latency targets, leading to increased communication errors and reduced spectral efficiency.
Implementing resource allocation schemes that prioritize lower priority logical channels at risk of latency failure before higher priority channels, and using bucket size limits and service order rules to ensure even resource distribution across channels.
Enhances the likelihood of satisfying latency targets, reduces communication errors, and improves spectral efficiency by ensuring urgent data is allocated sufficient resources.
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Figure CN2024089702_30102025_PF_FP_ABST
Abstract
Description
LOGICAL CHANNEL RESOURCE ALLOCATION FOR LATENCY-SENSITIVE TRAFFICTECHNICAL FIELD
[0001] The following generally relates to wireless communications and, more specifically, to logical channel resource allocation for latency-sensitive traffic.
[0002] DESCRIPTION OF THE RELATED TECHNOLOGY
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (such as time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0004] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0005] One innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a user equipment (UE) . The apparatus (or the UE) may include a processing system that includes processor circuitry and memory circuitry that stores code. The processing system may be configured to cause the UE to receive, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, receive an indication of an uplink grant for the UE, and transmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0006] Another innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication at a UE. The method may include receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, receiving an indication of an uplink grant for the UE, and transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0007] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a UE. The apparatus (or the UE) may include means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, means for receiving an indication of an uplink grant for the UE, and means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0008] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium storing code for wireless communication at an apparatus (such as at a UE or an apparatus of a UE) . The code may include instructions executable by a processing system (such as one or more processors) to receive, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, receive an indication of an uplink grant for the UE, and transmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0009] Some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, via a second set of resources associated with the uplink grant, the one or more second packets of the second set of buffered packets associated with the second logical channel after transmitting the one or more first packets of the first set of buffered packets associated with the first logical channel.
[0010] Some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting the one or more second packets of the second set of buffered packets via the second set of resources may be in association with a remainder of the first set of buffered packets excluding the one or more first packets having one or more latency headroom values that satisfy the threshold time value.
[0011] Some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, via a second set of resources associated with the uplink grant, one or more third packets of a third set of buffered packets associated with a third logical channel prior to transmitting the one or more second packets the second set of buffered packets associated with the second logical channel in accordance with a second latency headroom value associated with the one or more third packets failing to satisfy the threshold time value, the set of multiple logical channels further including the third logical channel.
[0012] In some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein, the one or more first packets of the first set of buffered packets associated with the first logical channel may be transmitted prior to the one or more third packets of the third set of buffered packets associated with the third logical channel in accordance with a dynamic prioritization between logical channels associated with buffered packets having latency headroom values that fail to satisfy the threshold time value.
[0013] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a UE. The apparatus (or the UE) may include a processing system that includes processor circuitry and memory circuitry that stores code. The processing system may be configured to cause the UE to receive, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, receive an indication of an uplink grant for the UE, transmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and transmit, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel
[0014] Another innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication at a UE. The method may include receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, receiving an indication of an uplink grant for the UE, transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0015] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a UE. The apparatus (or the UE) may include means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, means for receiving an indication of an uplink grant for the UE, means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0016] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium storing code for wireless communication at an apparatus (such as at a UE or an apparatus of a UE) . The code may include instructions executable by a processing system (such as one or more processors) to receive, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, receive an indication of an uplink grant for the UE, transmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and transmit, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0017] Some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving an indication of a second upper limit value associated with a second bucket size for the second logical channel, the one or more second packets meeting the second bucket size in accordance with the second upper limit value.
[0018] In some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein, the first upper limit value may be smaller than the second upper limit value.
[0019] In some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein, the first upper limit value may be a first constraint on the first bucket size and the second upper limit value may be a second constraint on the second bucket size.
[0020] Some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving the indication of the first upper limit value as a first bucket size duration associated with the first bucket size in accordance with a rule defining that a bucket size duration associated with a logical channel having a relatively highest priority may be constrained to a subset of relatively smallest bucket size durations of a set of available bucket size durations, the first bucket size equal to a product of a first prioritized bit rate associated with the first logical channel and the first bucket size duration.
[0021] Some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving an indication of a second upper limit value associated with a second bucket size for the second logical channel as a second bucket size duration associated with the second bucket size, the second bucket size equal to a second product of a second prioritized bit rate for the second logical channel and the second bucket size duration.
[0022] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a UE. The apparatus (or the UE) may include a processing system that includes processor circuitry and memory circuitry that stores code. The processing system may be configured to cause the UE to receive an indication of an uplink grant for the UE, transmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and transmit, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0023] Another innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication at a UE. The method may include receiving an indication of an uplink grant for the UE, transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0024] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a UE. The apparatus (or the UE) may include means for receiving an indication of an uplink grant for the UE, means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0025] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium storing code for wireless communication at an apparatus (such as at a UE or an apparatus of a UE) . The code may include instructions executable by a processing system (such as one or more processors) to receive an indication of an uplink grant for the UE, transmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and transmit, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0026] In some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein, the rule defines that each logical channel of the set of multiple logical channels may be served in an increasing order of latency metric until either data for that logical channel may be completely transmitted or until the uplink grant may be completely used.
[0027] In some implementations of the method, UEs, apparatuses, and non-transitory computer-readable medium described herein, the rule further defines that two or more logical channels associated with a same latency metric may be served equally.
[0028] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a network entity. The apparatus (or the network entity) may include a processing system that includes processor circuitry and memory circuitry that stores code. The processing system may be configured to cause the network entity to output, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, output an indication of an uplink grant for the UE, and obtain, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0029] Another innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication at a network entity. The method may include outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, outputting an indication of an uplink grant for the UE, and obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0030] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a network entity. The apparatus (or the network entity) may include means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, means for outputting an indication of an uplink grant for the UE, and means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0031] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium storing code for wireless communication at an apparatus (such as at a network entity or an apparatus of a network entity) . The code may include instructions executable by a processing system (such as one or more processors) to output, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel, output an indication of an uplink grant for the UE, and obtain, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0032] Some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for obtaining, via a second set of resources associated with the uplink grant, the one or more second packets of the second set of buffered packets associated with the second logical channel after obtaining the one or more first packets of the first set of buffered packets associated with the first logical channel.
[0033] Some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for obtaining the one or more second packets of the second set of buffered packets via the second set of resources may be in association with a remainder of the first set of buffered packets excluding the one or more first packets having one or more latency headroom values that satisfy the threshold time value.
[0034] Some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for obtaining, via a second set of resources associated with the uplink grant, one or more third packets of a third set of buffered packets associated with a third logical channel prior to obtaining the one or more second packets the second set of buffered packets associated with the second logical channel in accordance with a second latency headroom value associated with the one or more third packets failing to satisfy the threshold time value, the set of multiple logical channels further including the third logical channel.
[0035] In some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein, the one or more first packets of the first set of buffered packets associated with the first logical channel may be obtained prior to the one or more third packets of the third set of buffered packets associated with the third logical channel in accordance with a dynamic prioritization between logical channels associated with buffered packets having latency headroom values that fail to satisfy the threshold time value.
[0036] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a network entity. The apparatus (or the network entity) may include a processing system that includes processor circuitry and memory circuitry that stores code. The processing system may be configured to cause the network entity to output, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, output an indication of an uplink grant for the UE, obtain, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and obtain, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0037] Another innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication at a network entity. The method may include outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, outputting an indication of an uplink grant for the UE, obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0038] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a network entity. The apparatus (or the network entity) may include means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, means for outputting an indication of an uplink grant for the UE, means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0039] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium storing code for wireless communication at an apparatus (such as at a network entity or an apparatus of a network entity) . The code may include instructions executable by a processing system (such as one or more processors) to output, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, output an indication of an uplink grant for the UE, obtain, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value, and obtain, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0040] Some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting an indication of a second upper limit value associated with a second bucket size for the second logical channel, the one or more second packets meeting the second bucket size in accordance with the second upper limit value.
[0041] In some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein, the first upper limit value may be smaller than the second upper limit value.
[0042] In some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein, the first upper limit value may be a first constraint on the first bucket size and the second upper limit value may be a second constraint on the second bucket size.
[0043] Some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting the indication of the first upper limit value as a first bucket size duration associated with the first bucket size in accordance with a rule defining that a bucket size duration associated with a logical channel having a relatively highest priority may be constrained to a subset of relatively smallest bucket size durations of a set of available bucket size durations, the first bucket size equal to a product of a first prioritized bit rate associated with the first logical channel and the first bucket size duration.
[0044] Some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting an indication of a second upper limit value associated with a second bucket size for the second logical channel as a second bucket size duration associated with the second bucket size, the second bucket size equal to a second product of a second prioritized bit rate for the second logical channel and the second bucket size duration.
[0045] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a network entity. The apparatus (or the network entity) may include a processing system that includes processor circuitry and memory circuitry that stores code. The processing system may be configured to cause the network entity to output an indication of an uplink grant for a UE, obtain, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and obtain, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0046] Another innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication at a network entity. The method may include outputting an indication of an uplink grant for a UE, obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0047] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication at a network entity. The apparatus (or the network entity) may include means for outputting an indication of an uplink grant for a UE, means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0048] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium storing code for wireless communication at an apparatus (such as at a network entity or an apparatus of a network entity) . The code may include instructions executable by a processing system (such as one or more processors) to output an indication of an uplink grant for a UE, obtain, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel, and obtain, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0049] In some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein, the rule defines that each logical channel of the set of multiple logical channels may be served in an increasing order of latency metric until either data for that logical channel may be completely transmitted or until the uplink grant may be completely used.
[0050] In some implementations of the method, network entities, apparatuses, and non-transitory computer-readable medium described herein, the rule further defines that two or more logical channels associated with a same latency metric may be served equally.
[0051] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.BRIEF DESCRIPTION OF THE DRAWINGS
[0052] Figure 1 shows an example wireless communications system that illustrates a system or network of wireless communication devices that support logical channel resource allocation for latency-sensitive traffic.
[0053] Figure 2 shows an example signaling diagram that illustrates communication between a user equipment (UE) and a network entity associated with a resource allocation scheme to support logical channel resource allocation for latency-sensitive traffic.
[0054] Figure 3 shows an example resource allocation scheme that enables a transmission of a first buffered packet associated with a relatively lower priority logical channel prior to a transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy a threshold time value.
[0055] Figure 4 shows an example resource allocation scheme that limits an amount of resources associated with an uplink grant allocated to packets associated with a relatively higher priority logical channel by increasing a quantity of resource allocation rounds across a set of logical channels.
[0056] Figure 5 shows an example resource allocation scheme associated with a rule that defines a service order for a set of logical channels in accordance with a respective latency metric associated with each logical channel of the set of logical channels.
[0057] Figure 6 shows an example process flow that illustrates communication between a UE and a network entity associated with capability signaling, configuration signaling, activation signaling, and signaling related to an autonomous selection that support logical channel resource allocation for latency-sensitive traffic.
[0058] Figures 7 and 8 show block diagrams of devices that support logical channel resource allocation for latency-sensitive traffic.
[0059] Figure 9 shows a block diagram of a communications manager that supports logical channel resource allocation for latency-sensitive traffic.
[0060] Figure 10 shows a diagram of a system including a device that supports logical channel resource allocation for latency-sensitive traffic.
[0061] Figures 11 and 12 show block diagrams of devices that support logical channel resource allocation for latency-sensitive traffic.
[0062] Figure 13 shows a block diagram of a communications manager that supports logical channel resource allocation for latency-sensitive traffic.
[0063] Figure 14 shows a diagram of a system including a device that supports logical channel resource allocation for latency-sensitive traffic.
[0064] Figures 15–20 show flowcharts illustrating methods that support logical channel resource allocation for latency-sensitive traffic.DETAILED DESCRIPTION
[0065] The following description is directed to some particular examples for the purposes of describing innovative aspects of this disclosure. However, a person having ordinary skill in the art will readily recognize that the teachings herein can be applied in a multitude of different ways. Some or all of the described examples may be implemented in any device, system or network that is capable of transmitting and receiving radio frequency (RF) signals according to one or more of the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards, the IEEE 802.15 standards, the standards as defined by the Bluetooth Special Interest Group (SIG) , or the Long Term Evolution (LTE) , 3G, 4G or 5G (New Radio (NR) ) standards promulgated by the 3rd Generation Partnership Project (3GPP) , among others. The described examples can be implemented in any device, system or network that is capable of transmitting and receiving RF signals according to one or more of the following technologies or techniques: code division multiple access (CDMA) , time division multiple access (TDMA) , orthogonal frequency division multiplexing (OFDM) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , single-carrier FDMA (SC-FDMA) , spatial division multiple access (SDMA) , rate-splitting multiple access (RSMA) , multi-user shared access (MUSA) , single-user (SU) multiple-input multiple-output (MIMO) and multi-user (MU) -MIMO (MU-MIMO) . The described examples also can be implemented using other wireless communication protocols or RF signals suitable for use in one or more of a wireless personal area network (WPAN) , a wireless local area network (WLAN) , a wireless wide area network (WWAN) , a wireless metropolitan area network (WMAN) , or an internet of things (IOT) network.
[0066] In some wireless communication networks, a wireless communication device, such as a user equipment (UE) , may support or communicate extended reality (XR) traffic, which may be understood as data traffic associated with one or more XR applications. In some scenarios, XR traffic may be associated with multiple modals. Such multiple modals for XR traffic may include one or more of video traffic, audio traffic, or haptic traffic. Further, such multi-modal XR traffic may be associated with different target metrics, such as different packet delay budgets (PDBs) . For example, haptic traffic may have a PDB of less than approximately 10 milliseconds (ms) and video traffic may have a relatively less stringent PDB of, for example, approximately 10 ms, approximately 15 ms, or approximately 20 ms. The wireless communication device also may support multiple logical channels or multiple logical channel groups and, in some scenarios, may deliver different XR traffic flows via different logical channels or different logical channel groups.
[0067] Different logical channels or different logical channel groups may be associated with different resource allocation priorities in accordance with a logical channel prioritization scheme, with a traffic flow delivered via a given logical channel inheriting a resource allocation priority of that logical channel. For example, if a first XR traffic flow is delivered via a relatively higher priority logical channel and a second XR traffic flow is delivered via a relatively lower priority logical channel, the wireless communication device may allocate more resources to the first XR traffic flow as compared to the second XR traffic flow. Some logical channel prioritization schemes may be associated with fixed priority levels, which may result in a restriction against the wireless communication device being able to prioritize urgent (such as time-sensitive) packets if the urgent packets are associated with a relatively lower priority logical channel. Such schemes may result in an XR traffic flow associated with a low priority logical channel not being allocated sufficient resources (even if that XR traffic is associated with a relatively stringent latency target) , which may in turn result in that XR traffic having a relatively higher probability to fail a target PDB. Thus, some systems may benefit from additional capabilities relating to multi-modal traffic flows, including capabilities associated with logical channel prioritization and scheduling for coordinated / synchronized transmissions of multi-modal traffic flows and capabilities associated with recognizing inter-dependencies in multi-modal traffic flows, among other aspects.
[0068] Various aspects relate generally to resource allocation schemes according to which a UE may allocate resources associated with a grant across multiple logical channels at the UE. Some aspects more specifically relate to resource allocation schemes that account for a latency sensitivity of one or more packets associated with the logical channels in addition to, or as an alternative from, a baseline priority associated with each logical channel. For example, in accordance with some of the example resource allocation schemes disclosed herein, a UE may dynamically prioritize one or more logical channels in accordance with the one or more logical channels being associated with (such as having) one or more buffered packets that are at risk of failing a latency target, such as a packet delay budget (PDB) . In such aspects, if the UE determines that a first logical channel is associated with a packet that is at risk of failing a latency target, the UE may prioritize allocating resources to the first logical channel over a second logical channel, even if the second logical channel is associated with a relatively higher baseline priority as compared to the first logical channel. Additionally, or alternatively, and further in accordance with some of the example resource allocation schemes disclosed herein, the UE may otherwise increase a likelihood of serving one or more relatively lower priority logical channels (which may have latency-sensitive traffic) in accordance with limiting how many resources are allocated to a relatively higher priority logical channel. In such aspects, the UE may employ one or more upper limit values associated with one or more bucket sizes to increase a quantity of resource allocation rounds, which may effectively provide a more even distribution of resources among different logical channels at the UE (thereby increasing a likelihood of a relatively low priority logical channel being allocated a sufficient amount of resources to satisfy a latency target) .
[0069] Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by employing a resource allocation scheme that enables a UE (or any otherwise communication device, such as a network entity) to allocate resources to a first logical channel associated with a relatively lower (baseline) priority prior to allocating resources to a second logical channel associated with a relatively higher (baseline) priority in accordance with one or more packets of the first logical channel being at risk of failing a latency target, the UE may increase the likelihood of satisfying latency targets of traffic flows across various logical channels. In accordance with such a greater likelihood to satisfy latency targets for traffic flows across various logical channels, the UE may experience fewer communication errors, achieve greater spectral efficiency (in terms of, for example, facilitating a resource allocation to relatively most urgent data) , discard less data, and provide a greater user experience. The UE may similarly increase a likelihood of satisfying latency targets of traffic flows across various logical channels by increasing a quantity of resource allocation rounds via one or more upper limit values associated with one or more bucket sizes, which also may realize or facilitate fewer communication errors, achieve greater spectral efficiency, discard less data, and provide a greater user experience. Accordingly, a UE (or any other wireless communication device, such as a network entity) may achieve, experience, realize, or otherwise facilitate higher data rates, greater system capacity, and greater spectral efficiency, among other benefits as described herein.
[0070] Aspects of the disclosure are initially described in the context of wireless communications systems. Additionally, aspects of the disclosure are illustrated by and described with reference to a signaling diagram, resource allocation schemes, and a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to logical channel resource allocation for latency-sensitive traffic. Further, although described in some aspects as being performed by a UE in an example context of uplink data communication, any wireless communication device may implement the example resource allocation schemes disclosed herein for uplink communication, downlink communication, sidelink communication, relay communication, or any combination thereof.
[0071] Figure 1 shows an example wireless communications system 100 that illustrates a system or network of wireless communication devices that support logical channel resource allocation for latency-sensitive traffic. The wireless communications system 100 may include one or more devices, such as one or more network devices (such as network entities 105) , one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0072] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (such as a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (such as a geographic coverage area) over which the UEs 115 and the network entity 105 may establish the communication link (s) 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0073] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in Figure 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communications system 100 (such as other wireless communication devices, including UEs 115 or network entities 105) , as shown in Figure 1.
[0074] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (such as any network entity described herein) , a UE 115 (such as any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0075] In some examples, network entities 105 may communicate with a core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (such as in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via backhaul communication link (s) 120 (such as in accordance with an X2, Xn, or other interface protocol) either directly (such as directly between network entities 105) or indirectly (such as via the core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (such as in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (such as in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication link (s) 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (such as an electrical link, an optical fiber link) or one or more wireless links (such as a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0076] One or more of the network entities 105 or network equipment described herein may include or may be referred to as a base station 140 (such as a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (such as a base station 140) may be implemented in an aggregated (such as monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within one network entity (such as a network entity 105 or a single RAN node, such as a base station 140) .
[0077] In some examples, a network entity 105 may be implemented in a disaggregated architecture (such as a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among multiple network entities (such as network entities 105) , such as an integrated access and backhaul (IAB) network, an open RAN (O-RAN) (such as a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (such as a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) , such as a CU 160, a distributed unit (DU) , such as a DU 165, a radio unit (RU) , such as an RU 170, a RAN Intelligent Controller (RIC) , such as an RIC 175 (such as a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, such as an SMO system 180, or any combination thereof. An RU 170 also may be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (such as separate physical locations) . In some examples, one or more of the network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (such as a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0078] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (such as network layer functions, protocol layer functions, baseband functions, RF functions, or any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (such as layer 3 (L3) , layer 2 (L2) ) functionality and signaling (such as Radio Resource Control (RRC) , service data adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (such as one or more CUs) may be connected to a DU 165 (such as one or more DUs) or an RU 170 (such as one or more RUs) , or some combination thereof, and the DUs 165, RUs 170, or both may host lower protocol layers, such as layer 1 (L1) (such as physical (PHY) layer) or L2 (such as radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (such as via one or multiple different RUs, such as an RU 170) . In some examples, a functional split between a CU 160 and a DU 165 or between a DU 165 and an RU 170 may be within a protocol layer (such as some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to a DU 165 via a midhaul communication link 162 (such as F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 170 via a fronthaul communication link 168 (such as open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (such as a channel) between layers of a protocol stack supported by respective network entities (such as one or more of the network entities 105) that are in communication via such communication links.
[0079] In some wireless communications systems (such as the wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (such as to a core network 130) . In some examples, in an IAB network, one or more of the network entities 105 (such as network entities 105 or IAB node (s) 104) may be partially controlled by each other. The IAB node (s) 104 may be referred to as a donor entity or an IAB donor. A DU 165 or an RU 170 may be partially controlled by a CU 160 associated with a network entity 105 or base station 140 (such as a donor network entity or a donor base station) . The one or more donor entities (such as IAB donors) may be in communication with one or more additional devices (such as IAB node (s) 104) via supported access and backhaul links (such as backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (such as scheduled) by one or more DUs (such as DUs 165) of a coupled IAB donor. An IAB-MT may be equipped with an independent set of antennas for relay of communications with UEs 115 or may share the same antennas (such as of an RU 170) of IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (such as referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB node (s) 104 may include one or more DUs (such as DUs 165) that support communication links with additional entities (such as IAB node (s) 104, UEs 115) within the relay chain or configuration of the access network (such as downstream) . In such cases, one or more components of the disaggregated RAN architecture (such as the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0080] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support test as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (such as a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (such as components such as an IAB node, a DU 165, a CU 160, an RU 170, an RIC 175, an SMO system 180) .
[0081] A UE 115 may include or may 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 the “device” also may be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 also may include or may 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, a 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, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0082] The UEs 115 described herein may be able to communicate with various types of devices, such as UEs 115 that may sometimes operate as relays, as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in Figure 1.
[0083] The UEs 115 and the network entities 105 may wirelessly communicate with one another via the communication link (s) 125 (such as one or more access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined PHY layer structure for supporting the communication link (s) 125. For example, a carrier used for the communication link (s) 125 may include a portion of an RF spectrum band (such as a bandwidth part (BWP) ) that is operated according to one or more PHY layer channels for a given RAT (such as LTE, LTE-A, LTE-A Pro, NR) . Each PHY layer channel may carry acquisition signaling (such as synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (such as entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (such as a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (such as directly or via one or more other network entities, such as one or more of the network entities 105) .
[0084] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (such as using multi-carrier 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 refer to resources of one symbol period (such as a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (such as the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (such as in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (such as a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0085] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (such as 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (such as ranging from 0 to 1023) .
[0086] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (such as in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (such as depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems, such as the wireless communications system 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (such as Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0087] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (such as in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (such as a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (such as in bursts of shortened TTIs (sTTIs) ) .
[0088] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (such as a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (such as CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (such as control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to UEs 115 (such as one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (such as a specific UE) .
[0089] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (such as MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices. In some examples, a network entity 105 (such as a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area, such as the coverage area 110. In some examples, coverage areas 110 (such as different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (such as different coverage areas) may be supported by the same network entity (such as a network entity 105) . In some other examples, overlapping coverage areas, such as a coverage area 110, associated with different technologies may be supported by different network entities (such as the network entities 105) . The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (such as different coverage areas) using the same or different RATs.
[0090] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0091] In some examples, a UE 115 may be configured to support communicating directly with other UEs (such as one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a D2D communication link 135 (such as in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (such as a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (such as scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to one or more of the UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0092] 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 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (such as a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (such as a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (such as base stations 140) associated with the core network 130. User IP packets may be transferred–the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0093] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (such as less than one hundred kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0094] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) RAT, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (such as LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0095] A network entity 105 (such as a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which 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 assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0096] Beamforming, which also may be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (such as a network entity 105, a UE 115) to shape or steer an antenna beam (such as a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (such as with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0097] The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.
[0098] In some aspects, a wireless communication device (such as a UE 115 or a network entity 105) may support or communicate XR traffic (such as data traffic associated with one or more XR applications) . An XR application may be understood as or refer generally to one or more of various types of XR applications, such as an augmented reality (AR) application, a virtual reality (VR) application, or a mixed reality (MR) application. An AR application may augment or supplement a physical setting by incorporating additional sensory input including visual inputs (such as video, images, text, shapes, arrows, projections, or the like) , auditory inputs (such as sounds) , or both. A VR application may provide a simulated (such as a virtual or computer-generated) environment such that a user perceives themselves in a virtual setting. An MR application may provide a combination of AR and VR and may support functionalities via which a user may “navigate” between real physical settings and computer-generated virtual settings, among other aspects.
[0099] A UE 115 or a network entity 105 supporting an XR application (or otherwise transmitting, receiving, forwarding, generating, obtaining, outputting, relaying, or communicating XR traffic) may be a smart device, a wearable device (such as a smart watch, smart clothing, smart glasses, VR or AR goggles or glasses, a smart wristband, or smart jewelry (such as a smart ring or a smart bracelet) ) , an implant, a cellular phone, a gaming device, a navigation / positioning device (such as global navigation satellite system (GNSS) devices associated with, for example, global positioning system (GPS) , Beidou, GLONASS, Galileo, or a terrestrial-based device) , a tablet computer, a laptop computer, a netbook, a smartbook, a personal computer, or any other suitable device configured to communicate via a wireless or wired medium.
[0100] In some scenarios, XR traffic may be associated with high throughput, low latency, and high reliability performance targets. Additionally, or alternatively, XR traffic may be associated with multiple modals. Such multiple modals for XR traffic may include one or more of video traffic, audio traffic, or haptic traffic. As referred to herein, “traffic” may be equivalently understood as a “flow, ” a “traffic flow, ” a “series or sequence of data packets or transmissions, ” an “amount, group, or type of data or information, ” and the like. Video traffic may include data or information associated with portraying or displaying a video to one or more users. Audio traffic may include data or information associated with outputting noise (such as sound) for one or more users. Haptic traffic may include data or information associated with a creation of an experience of touch, force, motion, or vibration at a user (to create or control virtual objects or to enhance a remote control of machines or devices) .
[0101] Such multi-modal XR traffic may have (such as be associated with) different target metrics, such as different PDBs. For example, haptic traffic may have a PDB of less than approximately 10 ms and video traffic may have a relatively less stringent PDB of, for example, 10 ms, 15 ms, or 20 ms. Generally, a first XR traffic flow may be associated with a first PDB, a second XR traffic flow may be associated with a second PDB, and a third XR traffic flow may be associated with a third PDB. Any one or more of the first PDB, the second PDB, and the third PDB may be the same or different, and may be separately or jointly configured (such as signaled from a network entity 105 to a UE 115) . In some aspects, a wireless communication device (such as a UE 115 or a network entity 105) may support or otherwise participate in multiple XR traffic flows. Additionally, or alternatively, multiple XR traffic flows may be distributed across multiple wireless communication devices (such as across any one or more UEs 115 or one or more network entities 105, or any combination thereof) .
[0102] A wireless communication device may deliver (such as transmit) different XR traffic flows (such as different XR modals) in or via different logical channels or different logical channel groups. Different XR traffic flows may have (such as be associated with) different priorities in resource allocation for logical channels or logical channel groups. For example, in some systems, different logical channels (such as different logical channels in different logical channel groups) may have different priorities for resource allocation and, because different XR traffic flows may be delivered in or via different logical channels, different XR traffic flows may inherit a priority for resource allocation by way of being delivered in or via a specific logical channel. For example, if a first XR traffic flow is associated with (such as delivered in or via) a first logical channel associated with a relatively higher (resource allocation) priority and a second XR traffic flow is associated with (such as delivered in or via) a second logical channel associated with a relatively lower (resource allocation) priority, a wireless communication device may allocate relatively more resources to the first XR traffic flow as compared to the second XR traffic flow in accordance with the first logical channel having the relatively higher priority. A wireless communication device may assign channel priorities on a per logical channel basis, a per logical channel group basis, or any combination thereof.
[0103] If a resource grant is insufficient to serve an amount of queued, buffered, pending, or otherwise transmission-ready traffic, and if a prioritized bit rate (PBR) associated with a high priority logical channel (group) is set to a highest priority value (such as to “infinite” ) , a wireless communication device may serve (such as provide resources to) the high priority logical channel (group) prior to serving any other logical channels (or logical channel groups) associated with a relatively lower priority. A PBR may be associated with, set by, or indicated by a priorisedBitRate or a priorityBitRate parameter. In some aspects, a PBR may be understood as a data rate provided to one logical channel prior to allocating any resources to a relatively lower priority logical channel. A network entity 105 may configure a PBR for each logical channel via signaling to one or more UEs 115.
[0104] Alternatively, if a resource grant is sufficient to serve an amount of queued, buffered, pending, or otherwise transmission-ready traffic, a wireless communication device may allocate a first amount of resources associated with the resource grant to a first (relatively higher priority) logical channel (group) and may allocate a second amount of resources associated with the resource grant to a second (relatively lower priority) logical channel (group) in a first round of resource allocation. In some aspects, such a first amount of resources may be associated with or otherwise referred to as a first bucket size B, such as Bi, and such a second amount of resources may be associated with or otherwise referred to as a second bucket size B, such as Bj. In a second round of resource allocation, the wireless communication device may prioritize a remainder of the resource grant to be allocated to the first logical channel (group) until the buffered data associated with the first logical channel (group) is completely transmitted or the resource grant is completely used (such as exhausted) . If there remain some amount of resources associated with the resource grant after the second allocation to the first logical channel (group) , the wireless communication device may allocate the remaining resources to other, relatively lower priority logical channels (or logical channel groups) , such as the second logical channel.
[0105] Generally, a MAC entity of a wireless communication device, when a new transmission is performed, may allocate resources to one or more logical channels in accordance with a specified resource allocation scheme associated with one or more steps. In a first step, the wireless communication device, via the MAC entity, may allocate resources to logical channels selected for transmission within an uplink grant with a bucket size Bj>0 in an order of decreasing priority. If the PBR of a logical channel is set to “infinity, ” the MAC entity may allocate resources for the data (such as all the data) that is available for transmission on the logical channel prior to meeting a PBR of one or more relatively lower priority logical channels. In a second step, the wireless communication device, via the MAC entity, may decrement Bj by a total size of the MAC service data units (SDUs) served (such as provided) to the logical channel jof the first step. If any resources associated with the uplink grant remain, in a third step, the wireless communication device, via the MAC entity, may serve a set of (such as all) logical channels selected for transmission in an order of decreasing priority (regardless of the value of Bj) until the data for that logical channel or the uplink grant is exhausted, whichever comes first. In accordance with the resource allocation of the third step, the wireless communication device may serve logical channels that are configured with equal priorities equally (in terms of, for example, amount of resources allocated) .
[0106] Such logical channel prioritization schemes, which may be referred to herein as baseline logical channel prioritization schemes, may be associated with a fixed (baseline or configured) priority level and bucket size for each logical channel, such as for each logical channel (ID) (LCID) , which may result in a restriction against a wireless communication device being able to prioritize urgent (such as time-sensitive) packets if the urgent packets are associated with a relatively lower priority logical channel. In other words, relatively higher priority traffic flows (associated with relatively higher priority logical channels) may have an advantage over other, relatively lower priority traffic flows to get or obtain a resource grant. Accordingly, in some scenarios, relatively lower priority traffic flows may be “starved” (such as not allocated any resources or not allocated sufficient resources) as the wireless communication device uses a resource grant to guarantee (such as prioritize) delivery of relatively higher priority traffic flows. In accordance with different XR traffic flows being delivered via different logical channels and a baseline logical channel prioritization scheme, some relatively lower priority traffic flows may have a relatively higher probability to fail to meet a targeted PDB for an XR application or for an XR traffic flow.
[0107] Further, in some deployments, different UEs 115 may be allocated with different logical channels. In such deployments, relatively higher priority UEs 115 may have an advantage over relatively lower priority UEs 115 in scenarios in which a resource grant is insufficient to serve all UEs 115. Further, in such deployments, for multi-modal XR service, multiple devices (such as multiple UEs 115) may share a same multi-modal XR service ID. Thus, relatively lower priority devices may be “starved” (such as not allocated any resources or not allocated sufficient resources) as a resource grant guarantees (such as prioritizes) service to relatively higher priority devices. Accordingly, relatively lower priority devices may have a relatively higher probability to fail to meet a targeted PDB for an XR application.
[0108] In some systems, a UE 115 may transmit a delay state report (DSR) to a network entity 105 to indicate, provide, or otherwise deliver a remaining delay budget (RDB) associated with uplink traffic at the UE 115 (such as uplink traffic awaiting transmission from the UE 115 to the network entity 105) . An RDB associated with a traffic flow (a packet associated with the traffic flow) may represent or be equal to a PDB minus a time duration during which the traffic flow (the packet) stays in a buffer at the UE 115 (such as PDB minus latency incurred in a buffer) . The UE 115 may transmit the DSR via a MAC control element (MAC-CE) . The UE 115 may use the DSR to attempt to prioritize a scheduling of urgent traffic flows or packets at the UE 115, such as traffic flows or packets that are at risk of failing (exceeding) a PDB. In other words, the smaller an RDB is, the more urgent the transmission of the associated traffic flow or packet. A traffic flow or packet associated with a relatively smallest RDB, of a set of traffic flows or packets, may be understood as being relatively most at risk to fail to meet a target PDB.
[0109] A UE 115 may transmit such a DSR to request a network entity 105 to provide (such as schedule, allocate, or grant) additional uplink resources such that the UE 115 may have a greater likelihood of serving relatively more logical channels, including logical channels associated with relatively urgent traffic flows packets. Such a signaled request may be associated with added signaling overhead, relatively high latency, and a lack of a guarantee that the request will be sufficiently responded to by the network entity 105. In other words, a UE 115 that transmits a DSR may rely on the network entity 105 to provide the UE 115 with sufficient resources to serve relatively lower priority logical channels with relatively urgent traffic flows or packets in accordance with a baseline logical channel prioritization scheme. Such a reliance on the network entity 105 risks potentially frequent failure of one or more PDBs (especially in scenarios of high congestion or dense deployments) , which may in turn adversely impact a user experience for some application types (including XR applications or any other applications associated with relatively stringent PDB or latency targets) .
[0110] In accordance with some example implementations, one or more wireless communication devices (such as one or more UEs 115 or one or more network entities 105, or any combination thereof) of the wireless communications system 100 may support one or more mechanisms, rules, operational procedures, or operating modes associated with a resource allocation for multiple logical channels that accounts for PDBs associated with one or more individual packets (in addition to, or as an alternative to, baseline logical channel priorities) . In other words, such mechanisms, rules, operational procedures, or operating modes may be associated with uplink delay-aware scheduling with dynamic logical channel prioritization. For example, in some implementations, the one or more wireless communication devices may consider one or more latency metrics as part of allocating a resource grant among one or more logical channels. Additionally, or alternatively, the one or more wireless communication devices may consider one or more latency metrics as part of scheduling devices that share a same multi-modal service ID (such as a same multi-modal XR service ID) . Additionally, or alternatively, the one or more wireless communication devices may redefine, replace, or supplement a mechanism associated with how remaining resources are allocated (such as after a first round of a resource allocation) in accordance with a latency headroom value associated with each of multiple different traffic flows in one or more different logical channels.
[0111] Thus, in accordance with some example implementations, a UE 115 or a network entity, or both, may support multi-modal flows associated with intra-UE or inter-UE scenarios, scheduling and logical channel prioritization for coordinated or synchronized transmissions for multi-modal flows, network awareness of inter-dependencies in multi-modal flows, configurations for multiple discontinuous reception (DRX) for multiple flows (which may be applicable to various mixed traffic cases) , or any combination thereof. Further, although some signaling mechanisms are illustrated and described herein in one or more specific signaling directions, various wireless communication devices may employ the example implementations in any signaling direction, as any device type, and for any communication direction (such as for uplink, downlink, sidelink or any combination thereof) .
[0112] Figure 2 shows an example signaling diagram 200 that illustrates communication between a UE 115 and a network entity 105 associated with a resource allocation scheme to support logical channel resource allocation for latency-sensitive traffic. The signaling diagram 200 may implement or be implemented to realize one or more aspects of the wireless communications system 100. For example, the signaling diagram 200 illustrates communication between a UE 115 and a network entity 105, which may be examples of corresponding devices as illustrated and described herein, including by and with reference to Figure 1.
[0113] The UE 115 and the network entity 105 may communicate via a downlink 205-a and an uplink 205-b. As referred to herein, “communicating” may generally refer to one or both of transmitting or receiving. In some implementations, the UE 115 may receive information 210 associated with a resource allocation scheme 215 according to which the UE 115 may allocate resources to one or more logical channels 235 at the UE 115. Additionally, or alternatively, one or both of the UE 115 or the network entity 105 may retrieve the information 210 from one or more respective memories. The information 210 may include an indication of a threshold time value associated with a resource allocation 240 to one or more logical channels 235 or an indication of one or more upper limit values associated with one or more bucket sizes for one or more logical channels 235, among other aspects.
[0114] A logical channel 235 may generally refer to a logical channel 235-a, a logical channel 235-b, or a logical channel 235-c. The logical channels 235 may belong to or be associated with one or more logical channel groups. For example, the logical channels 235 may belong to a same logical channel group, may each belong to different logical channel groups, or two may belong to a first logical channel group and the other may belong to a second logical channel group. Further, although illustrated and described in an example in which the UE 115 has or serves three logical channels 235, the described techniques may be equivalently applicable to examples in which the UE 115 has or serves any quantity of logical channels, such as two logical channels, four logical channels, five logical channels, and so on.
[0115] The UE 115 may receive an uplink grant 220 from the network entity 105. The UE 115 may receive the uplink grant 220 via radio resource control (RRC) signaling (such as for a configured uplink grant, such as a configured grant (CG) ) , one or more MAC-CEs (such as for a semi-persistently scheduled or activated uplink grant) , downlink control information (DCI) (such as for a dynamically allocated or scheduled uplink grant) , or any combination thereof. In some aspects, the UE 115 may select one or more logical channels 235 to serve via the uplink grant 220 (such as using resources 230 associated with the uplink grant 220) . Resources 230 associated with the uplink grant 220 may refer to any combination of one or more time domain resources or one or more frequency domain resources of or indicated by the uplink grant 220. For example, resources 230 associated with the uplink grant 220 may include one or more packet delivery opportunities. A packet delivery opportunity may refer to or include one or more discrete transmission opportunities, such as one or more discrete durations, periods, or intervals in time. Additionally, or alternatively, a packet delivery opportunity may refer to or include a discrete amount, portion, or region in frequency.
[0116] In accordance with the resource allocation scheme 215, the UE 115 may perform a resource allocation 240 to allocate resources 230 associated with the uplink grant 220 to one or more of the logical channel 235-a, the logical channel 235-b, and the logical channel 235-c. For example, in accordance with the resource allocation scheme 215, the UE 115 may allocate resources 230 associated with the uplink grant 220 to one or more packets 245-a of a first set of buffered packets associated with the logical channel 235-a, one or more packets 245-b of a second set of buffered packets associated with the logical channel 235-b, one or more packets 245-c of a third set of buffered packets associated with the logical channel 235-c, or any combination thereof. In some implementations, the UE 115 may use the resource allocation scheme 215 to account for a time sensitivity, such as a PDB, of one or more packets 245 (which may refer generally to any one or more of the one or more packets 245-a, the one or more packets 245-b, or the one or more packets 245-c) in addition to, or as an alternative of, a baseline priority associated with the logical channels 235. A baseline priority, which may equivalently be referred to herein as a fixed or configured priority, may refer to a priority of a logical channel that is relatively statically configured (such as by the network entity 105 or in accordance with a network specification) .
[0117] In some implementations, the resource allocation scheme 215 may enable a transmission of a first buffered packet associated with a relatively lower priority logical channel 235 prior to a transmission of a second buffered packet associated with a relatively higher priority logical channel 235 in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy a threshold time value. For example, if the one or more packets 245-a are associated with a first latency headroom value that fails to satisfy a threshold time value, the UE 115 may prioritize allocating resources 230 to the one or more packets 245-a over the one or more packets 245-b and the one or more packets 245-c, even if the logical channel 235-b and the logical channel 235-c are associated with relatively higher (baseline, fixed, or configured) priorities than the priority associated with the logical channel 235-a. In some aspects, if multiple logical channels 235 are associated with buffered packets having latency headroom values that fail to satisfy a threshold time value, the UE 115 may prioritize the one or more packets 245 of the logical channel 235 that are relatively more at risk of failing a latency target (such as a PDB) . For example, if the one or more packets 245-a and the one or more packets 245-b are associated with a first latency headroom value and a second latency headroom value, respectively, that fail to satisfy a threshold time value, the UE 115 may prioritize the one or more packets 245-a over the one or more packets 245-b if the first latency headroom value is relatively smaller than the second latency headroom value. Additional details relating to such a resource allocation scheme 215 are illustrated and described herein, including by and with reference to Figure 3.
[0118] Additionally, or alternatively, the resource allocation scheme 215 may limit an amount of resources 230 associated with the uplink grant 220 allocated to packets 245 associated with a relatively higher (baseline, fixed, or configured) priority logical channel 235 by increasing a quantity of resource allocation rounds across the logical channels 235. In some aspects, the quantity of resource allocation rounds may be increased in accordance with one or more upper limit values associated with one or more bucket sizes for one or more logical channels 235. For example, at least one upper limit value or constraint may be configured to limit a bucket size of at least a relatively highest (baseline, fixed, or configured) priority logical channel 235, which may effectively result in a greater quantity of (more frequent) resource allocation rounds among the logical channels 235 at the UE 115. In some aspects, each of the logical channels 235 may have an upper limit value or constraint on a bucket size for that logical channel 235. Additional details relating to such a resource allocation scheme 215 are illustrated and described herein, including by and with reference to Figure 4.
[0119] Additionally, or alternatively, the resource allocation scheme 215 may be associated with a rule that defines a service order associated with the logical channels 235 in accordance with a respective latency metric associated with each logical channel 235 of the logical channels 235. In such implementations, for example, the resource allocation scheme 215 may define how remaining resources 230 (such as resources 230 associated with the uplink grant 220 after an initial round of resource allocation or after a resource allocation associated with a baseline resource allocation scheme) can be allocated to each logical channel 235 in an order of increasing RBD or PDB until the data for that logical channel 235 is completely transmitted or the uplink grant 220 is exhausted, whichever comes first. Additional details relating to such a resource allocation scheme 215 are illustrated and described herein, including by and with reference to Figure 5.
[0120] In accordance with one or more of the example resource allocation schemes 215 disclosed herein, the UE 115 may allocate one or more packets associated with one or more logical channels 235 at the UE 115 to resources 230 associated with the uplink grant 220 and may transmit the one or more packets as uplink data 225. Further, although illustrated and described in the context of uplink data 225 in the example of the signaling diagram 200, the UE 115 or the network entity 105 may employ any one or more of the example resource allocation schemes 215 for downlink data or sidelink data. For example, the network entity 105 may employ a resource allocation scheme 215 to allocate packets to downlink resources and may transmit the packets to the UE 115. Additionally, or alternatively, the UE 115 may employ a resource allocation scheme 215 to allocate packets to sidelink resources and may transmit the packets to another UE 115 (such as a second UE 115) .
[0121] Figure 3 shows an example resource allocation scheme 300 that enables a transmission of a first buffered packet associated with a relatively lower priority logical channel 235 prior to a transmission of a second buffered packet associated with a relatively higher priority logical channel 235 in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy a threshold time value. The resource allocation scheme 300 may implement or be implemented to realize one or more aspects of the wireless communications system 100 or the signaling diagram 200. For example, a UE 115 (or any other wireless communication device) may implement the resource allocation scheme 300 to allocate resources 230 associated with an uplink grant 220 to one or more logical channels 235 at the UE 115. The resource allocation scheme 300 may be an example of the resource allocation scheme 215.
[0122] The resource allocation scheme 300 may enable a transmission of a first buffered packet associated with a relatively lower priority logical channel 235 prior to a transmission of a second buffered packet associated with a relatively higher priority logical channel 235 in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy a threshold time value. In some implementations, the UE 115 may receive an indication of the threshold time value from a network entity 105. For example, the UE 115 may receive the indication of the threshold time value from the network entity 105 via information associated with a resource allocation 240 to the logical channels 235 at the UE 115. Such information associated with the resource allocation 240 may include any one or more RRC information elements, one or more MAC-CEs, or one or more DCI formats, or any combination thereof, that provide parameters associated with the resource allocation 240 or the resource allocation scheme 300. Additionally, or alternatively, the UE 115 may retrieve such information associated with the resource allocation 240 from one or more memories of the UE 115.
[0123] The threshold time value may be a threshold for latency that is (pre-) configured at the UE 115. Use of the threshold time value may enable the resource allocation scheme 300 to consider, besides baseline logical channel priorities, a latency headroom. In other words, besides baseline logical channel priorities, the UE 115, in accordance with the resource allocation scheme 300, may incorporate one or more latency headroom values into the baseline resource allocation scheme of resource allocation 240 for multiple logical channels 235 with different priorities. In some implementations, the UE 115 may use a single threshold time value for all (or at least a set of) logical channels 235. Additionally, or alternatively, the UE 115 may use different threshold time values for different logical channels 235. For example, the UE 115 may use a first threshold time value for a first logical channel and a second threshold time value for a second logical channel, with the first threshold time value and the second threshold time value being the same or being different.
[0124] In the example of the resource allocation scheme 300, at 305, the UE 115 may receive an indication of an uplink grant 220 for the UE 115. The UE 115 may receive the uplink grant 220 via RRC signaling, one or more MAC-CEs, one or more DCI formats, or any combination thereof. The UE 115 (or any other wireless communication device implementing the resource allocation scheme 300) may alternatively receive a grant of resources 230 separate from an uplink grant 220 (such as a sidelink grant, a downlink grant, or any other scheduled or allocated resources usable for wireless communications) .
[0125] At 310, the UE 115 may determine, select, identify, or otherwise ascertain which one or more logical channels 235 at the UE 115 have available data. Available data may include or refer to a presence of one or more buffered, queued, or otherwise transmission-ready packets associated with a logical channel 235. In some examples, and as illustrated in the example of the signaling diagram 200, the UE 115 may determine that the logical channel 235-a, the logical channel 235-b, and the logical channel 235-c have available data.
[0126] At 315, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether a latency headroom value associated with any logical channel 235 with available data is less than or equal to the threshold time value. In other words, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether any one or more logical channels 235 are associated with at least one buffered packet that has a latency headroom value that fails to satisfy the threshold time value. In yet other words, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether any one or more logical channels 235 are at risk of failing a latency target, such as a PDB, as failure to satisfy the threshold time value may be indicative of a risk (with a sufficiently high likelihood) to fail the latency target. As used herein, a “latency headroom value” may be an RDB or another measure of exactly or approximately how much time a packet has before a PDB or other latency target is failed. Further, as used herein, “satisfying a threshold” or “failing to satisfy a threshold” may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, or the like.
[0127] At 320, if the UE 115 determines that one or more logical channels 235 each have at least one packet with a latency headroom value failing to satisfy the threshold time value, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain a first logical channel 235 (such as the logical channel 235-a) that has a relatively highest latency-related (such as dynamic) priority associated with the one or more logical channels 235. If a single logical channel 235 is associated with at least one packet having a latency headroom value failing to satisfy the threshold time value, the UE 115 may select the single logical channel 235 as having the highest latency-related (such as dynamic) priority. Alternatively, if multiple logical channels 235 have a risk of failing a latency target, the UE 115 may initially allocate resources 230 to a logical channel 235 with a highest priority, then to a logical channel 235 with a next highest priority, and so on until the resources 230 associated with the uplink grant 220 are exhausted or until the UE 115 has allocated resources 230 to each of the multiple logical channels 235 at risk of failing a latency target.
[0128] In some aspects, the UE 115 may employ a rule or mechanism that defines a latency-related (such as dynamic) priority associated with each of the multiple logical channels 235 in scenarios in which multiple logical channels 235 have a risk of failing a latency target. In some implementations, the UE 115 may employ a function, algorithm, table, or other calculation to generate a dynamic priority for each of the multiple logical channels 235 according to latency headroom (for specific XR flows) . For example, the UE 115 may use a function as shown below in Equation 1 (where “LC” may denote a logical channel) . LCpriority,i=F (latency headroom of LCi) (1)
[0129] In some implementations, the UE 115 may define latency headroom values as absolute latency headroom values (as opposed to, for example, relative latency headroom values, such as latency headroom values defined relative to a latency target, such as a PDB) . In such implementations, the smaller an absolute latency headroom of a packet associated with a logical channel 235, the higher the latency-related (dynamic) priority for that logical channel 235. For example, if a first logical channel 235 LCi has a first (absolute) latency headroom value of 3 milliseconds and a second logical channel 235 LCj has a second (absolute) latency headroom value of 4 milliseconds, the UE 115 may prioritize the first logical channel 235 LCi over the second logical channel 235 LCj (because 3 < 4) . In accordance with the first latency headroom value being 3 milliseconds and the second latency headroom value being 4 milliseconds, the UE 115 may prioritize the first logical channel 235 LCi over the second logical channel 235 LCj regardless of a respective PDB of the first and second logical channels 235.
[0130] For example, if a first PDB associated with the first logical channel 235 LCi is 10 milliseconds and a second PDB associated with the second logical channel 235 LCj is 15 milliseconds, the UE 115 may determine a first relative latency headroom value associated with the first logical channel 235 LCi as 0.3 and a second relative latency headroom value associated with the second logical channel 235 LCj as 0.26. In some implementations, despite the second logical channel 235 LCj having the lower relative latency headroom value, the UE 115 may still prioritize first logical channel 235 LCi over the second logical channel 235 LCj in accordance with the absolute latency headroom values.
[0131] In some other implementations, the UE 115 may determine to prioritize the second logical channel 235 LCj over the first logical channel 235 LCi in accordance with the relative latency headroom values. For instance, in examples in which latency headroom values associated with multiple logical channels 235 are the same (such as, for example, 3 milliseconds) , the UE 115 may prioritize the multiple logical channels 235 in an order of increasing latency target (such as an order of increasing PDB) . In other words, among a set of logical channels 235 associated with a same latency headroom value (and if that same latency headroom value fails to satisfy the threshold time value) , the smaller a PDB of a packet associated with a logical channel 235, the higher the latency-related (dynamic) priority for that logical channel 235. In scenarios in which multiple logical channels 235 are associated with a same latency headroom value and a same PDB, the UE 115 may employ a baseline resource allocation scheme to prioritize the multiple logical channels 235 (using, for example, baseline, fixed, or configured priorities for each of the multiple logical channels 235) .
[0132] At 350, if the UE 115 determines that all (or at least a threshold quantity of) logical channels 235 each have packets with latency headroom values that satisfy the threshold time value (such that, for example, latency headroom value > threshold) , the UE 115 may perform or fallback to a baseline resource allocation (associated with a baseline resource allocation scheme) . In other words, if no (or a sufficiently small subset of) logical channels 235 are at risk of failing a latency target, the UE 115 may use a (baseline, fixed, or configured) priority-based approach to allocate resources 230 associated with the uplink grant 220 for logical channels 235 orderly.
[0133] In accordance with prioritizing the logical channels 235 at 320 in accordance with a latency headroom value, along with other latency-related criteria as applicable, the UE 115 may, at 325, allocate resources 230 to a first logical channel 235 determined, selected, identified, or otherwise ascertained as a highest priority logical channel 235 (in terms of a dynamic or an otherwise latency-related priority) . For example, the UE 115 may allocate a first set of resources 230 associated with the uplink grant 220 to one or more packets 245 associated with the first logical channel 235.
[0134] At 330, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether additional resources 230 associated with the uplink grant 220 are available. For example, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether, after allocating resources 230 to the first logical channel 235 at 325, there are any remaining resources 230 associated with the uplink grant 220.
[0135] If the UE 115 determines that there are not any (or sufficient) remaining resources 230 associated with the uplink grant 220, at 355, the UE 115 may end the resource allocation 240.
[0136] Alternatively, if the UE 115 determines that there are remaining resources 230 associated with the uplink grant 220, at 335, the UE 115 may further determine, select, identify, measure, calculate, or otherwise ascertain whether a latency headroom value associated with any other logical channel 235 (outside of the first logical channel 235) with available data is less than or equal to the threshold time value. In scenarios in which the UE 115 determined, at 315, that multiple logical channels 235 are associated with latency headroom values that fail to satisfy the threshold time value, the UE 115 may determine, at 335, that there is at least one other logical channel 235 associated with a latency headroom value that fails to satisfy the threshold time value.
[0137] At 340, if the UE 115 may determine that there is at least one other logical channel 235 associated with a latency headroom value that fails to satisfy the threshold time value, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain a next (second) logical channel 235 (such as the logical channel 235-b) that has a next highest latency-related (such as dynamic) priority. The UE 115 may determine the next logical channel 235 in accordance with the next logical channel 235 having a relatively greater latency headroom value as compared to the first logical channel 235 (such as a next lowest latency headroom value) that still fails to satisfy the threshold time value, having a relatively greater latency target (such as PDB) as compared to the first logical channel 235 (if, for example, the first logical channel 235 and the next logical channel 235 have a same latency headroom value) , or having a relatively lower baseline, fixed, or configured priority as compared to the first logical channel 235 (if, for example, the first logical channel 235 and the next logical channel 235 have a same latency headroom value and a same latency target) .
[0138] At 345, the UE 115 may allocate resources 230 to the next (second) logical channel 235 determined, selected, identified, or otherwise ascertained as the next highest priority logical channel 235 (in terms of a dynamic or an otherwise latency-related priority, or in terms of a baseline, fixed, or configured priority if the first logical channel 235 and the next logical channel 235 are associated with a same latency-related priority) . For example, the UE 115 may allocate a second set of resources 230 associated with the uplink grant 220 to one or more packets 245 associated with the next (second) logical channel 235.
[0139] The UE 115 may repeat or cycle through steps 330-345 until the UE 115 completes the resource allocation 240 by performing (such as falling back to) a baseline resource allocation at 350 or until the UE 115 ends the resource allocation 240 at 355. The UE 115 may perform or fallback to the baseline resource allocation at 350 in accordance with (such as after) serving all or most logical channels 235 associated with buffered packets at risk of failing a latency target. In some implementations, the UE 115 may periodically, aperiodically, or constantly monitor and determine whether a latency headroom value associated with any logical channel 235 fails to satisfy the threshold time value in accordance with (such as while) performing the baseline resource allocation at 350. The UE 115 may end the resource allocation 240 at 355 in accordance with exhausting (such as completely using) the resources 230 associated with the uplink grant 220.
[0140] Thus, the UE 115 may use the resource allocation scheme 300 to dynamically prioritize logical channels 235 in accordance with one or more latency-related metrics or values, which may increase the likelihood of the UE 115 appropriately serving time-sensitive traffic flows across various logical channels 235 at the UE 115, even in scenarios in which different logical channels 235 are associated with different baseline, fixed, or configured priorities. In accordance with such a relatively more appropriate service to time-sensitive traffic flows, the UE 115 may provide a greater user experience and experience relatively fewer communication errors (including, for example, PDB failures) , among other benefits.
[0141] Figure 4 shows an example resource allocation scheme 400 that limits an amount of resources 230 associated with an uplink grant 220 allocated to packets 245 associated with a relatively higher priority logical channel 235 by increasing a quantity of resource allocation rounds across a set of logical channels 235. The resource allocation scheme 400 may implement or be implemented to realize one or more aspects of the wireless communications system 100 or the signaling diagram 200. For example, a UE 115 (or any other wireless communication device) may implement the resource allocation scheme 400 to allocate resources 230 associated with an uplink grant 220 to one or more logical channels 235 at the UE 115. The resource allocation scheme 400 may be an example of the resource allocation scheme 215.
[0142] The resource allocation scheme 400 may limit an amount of resources 230 associated with an uplink grant 220 allocated to packets 245 associated with a relatively higher (baseline, fixed, or configured) priority logical channel 235 by increasing a quantity of resource allocation rounds across a set of logical channels 235. In some aspects, the quantity of resource allocation rounds may be increased in accordance with one or more upper limit values associated with one or more bucket sizes (which may be denoted herein as B) for one or more logical channels 235. For example, at least one upper limit value or constraint may be configured to limit a bucket size of at least a relatively highest (baseline, fixed, or configured) priority logical channel 235, which may effectively result in a greater quantity of (more frequent) resource allocation rounds among the logical channels 235 at the UE 115. In some aspects, each of a set of logical channels 235 may have an upper limit value or constraint on a bucket size for that logical channel 235.
[0143] In some implementations, the UE 115 may receive an indication of one or more upper limit values from a network entity 105. For example, the UE 115 may receive the indication of the one or more upper limit values from the network entity 105 via information associated with a resource allocation 240 to the logical channels 235 at the UE 115. Such information associated with the resource allocation 240 may include any one or more RRC information elements, one or more MAC-CEs, or one or more DCI formats, or any combination thereof, that provide parameters associated with the resource allocation 240 or the resource allocation scheme 400. Additionally, or alternatively, the UE 115 may retrieve such information associated with the resource allocation 240 from one or more memories of the UE 115.
[0144] An upper limit value may be indicated as a constraint (such as a maximum value) on a bucket size or as a bucket size duration associated with a bucket size. Thus, as described herein, an “upper limit value” associated with a bucket size may, depending on the context, be a constraint on the bucket size or a bucket size duration associated with the bucket size. In examples in which an upper limit value associated with a logical channel 235 is indicated as a bucket size duration, the UE 115 may calculate a bucket size corresponding to the logical channel 235 as a product of a PBR associated with the logical channel 235 and the bucket size duration (such as in accordance with a calculation of PBR × BSD, with “BSD” denoting the bucket size duration) . In some implementations, the UE 115 may receive both an indication of a constraint on a bucket size and an indication of a bucket size duration associated with the bucket size. In some other implementations, the UE 115 may receive one of an indication of a constraint on a bucket size and an indication of a bucket size duration associated with the bucket size.
[0145] In some implementations, the UE 115 may use a single upper limit value for all (or at least a set of) logical channels 235. Additionally, or alternatively, the UE 115 may use different upper limit values for different logical channels 235. For example, the UE 115 may use a first upper limit value for a first logical channel and a second upper limit value for a second logical channel, with the first upper limit value and the second upper limit value being the same or being different. In some implementations, for example, a specific constraint to a bucket size Bj may be configured to except (such as to preempt, override, cap, or otherwise limit) the configured bucket size (the configured bucket size being associated with or equal to a product of PBR × BSD) when allocating resources 230 for different logical channels 235 that deliver one or more traffic associated with a given application, such as one or more XR traffic. Such a specific constraint to a bucket size Bj may be understood as an upper limit value that is specific to a logical channel 235 LCj.
[0146] In the example of the resource allocation scheme 400, at 405, the UE 115 may receive an indication of an uplink grant 220 for the UE 115. The UE 115 may receive the uplink grant 220 via RRC signaling, one or more MAC-CEs, one or more DCI formats, or any combination thereof. The UE 115 (or any other wireless communication device implementing the resource allocation scheme 400) may alternatively receive a grant of resources 230 separate from an uplink grant 220 (such as a sidelink grant, a downlink grant, or any other scheduled or allocated resources usable for wireless communications) .
[0147] At 410, the UE 115 may determine, select, identify, or otherwise ascertain which one or more logical channels 235 at the UE 115 have available data. Available data may include or refer to a presence of one or more buffered, queued, or otherwise transmission-ready packets associated with a logical channel 235. In some examples, and as illustrated in the example of the signaling diagram 200, the UE 115 may determine that the logical channel 235-a, the logical channel 235-b, and the logical channel 235-c have available data.
[0148] At 415, the UE 115 may determine, select, identify, or otherwise ascertain which of the one or more logical channels 235 that have available data has a relatively highest priority. Such a priority may be a baseline, fixed, or configured priority or may be a dynamic, latency-based, or latency-related priority. In some aspects, the UE 115 may determine that a first logical channel 235 (such as the logical channel 235-a) has a relatively highest priority.
[0149] At 420, the UE 115 may allocate resources 230 to the first logical channel 235 determined, selected, identified, or otherwise ascertained as the highest priority logical channel 235. For example, the UE 115 may allocate a first set of resources 230 associated with the uplink grant 220 to one or more packets 245 associated with the first logical channel 235. In some implementations, the UE 115 may allocate resources to the first logical channel 235 in accordance with a first upper limit value associated with the first logical channel 235, the first upper limit value being associated with a first bucket size associated with the first logical channel 235. The first upper limit value may be a constraint on the first bucket size (such that the first bucket size stays less than or equal to the first upper limit value) or may be a first bucket size duration associated with the first bucket size (such that the UE 115 may calculate the first bucket size using the first bucket size duration, which may effectively limit the first bucket size) .
[0150] At 425, for example, the UE 115 may continue allocating resources 230 to the first logical channel 235 if the UE 115 determines that the first bucket size associated with the first logical channel 235 is not met. Alternatively, the UE 115 may determine that one or more packets 245 for which the UE 115 has allocated resources 230 meet (such as are approximately equal to without exceeding) the first bucket size. As described herein, one or more packets that “meet a bucket size” may be understood as a set of one or more packets that correspond a size of one or more MAC SDUs that fills or approximately fills the bucket size, such that the bucket size minus the size of the one or more MAC SDUs is equal to approximately zero. In other words, one or more packets that “meet a bucket size” may be understood as a set of one or more packets that, if an additional packet were to be added, would violate the bucket size. Thus, one or more packets that “meet a bucket size” may be understood as an upper limit or maximum quantity of packets (or, more generally, an upper limit or maximum amount of data) that avoids violating the bucket size. The UE 115 may allocate resources 230 to the first logical channel (such as to packets 245 associated with the first logical channel) until the first bucket size is met or until all data associated with the first logical channel 235 has been transmitted or otherwise allocated resources 230.
[0151] At 430, in accordance with meeting the first bucket size or allocating resources 230 to all data associated with the first logical channel 235, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether additional resources 230 associated with the uplink grant 220 are available. For example, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether, after allocating resources 230 to the first logical channel 235 at 420, there are any remaining resources 230 associated with the uplink grant 220.
[0152] If the UE 115 determines that there are not any (or sufficient) remaining resources 230 associated with the uplink grant 220, at 455, the UE 115 may end the resource allocation 240.
[0153] Alternatively, if the UE 115 determines that there are remaining resources 230 associated with the uplink grant 220, at 435, the UE 115 may further determine, select, identify, or otherwise ascertain which of the one or more logical channels 235 that have available data has a next highest priority (after the first logical channel) . Such a priority may be a baseline, fixed, or configured priority or may be a dynamic, latency-based, or latency-related priority. In some aspects, the UE 115 may determine that a second logical channel 235 (such as the logical channel 235-b) has a next highest priority.
[0154] At 440, the UE 115 may allocate resources 230 to the second logical channel 235 determined, selected, identified, or otherwise ascertained as the next highest priority logical channel 235. For example, the UE 115 may allocate a second set of resources 230 associated with the uplink grant 220 to one or more packets 245 associated with the second logical channel 235. In some implementations, the UE 115 may allocate resources to the second logical channel 235 in accordance with a second upper limit value associated with the second logical channel 235, the second upper limit value associated with a second bucket size associated with the second logical channel 235. The second upper limit value may be a constraint on the second bucket size (such that the second bucket size stays less than or equal to the second upper limit value) or may be a second bucket size duration associated with the second bucket size (such that the UE 115 may calculate the second bucket size using the second bucket size duration, which may effectively limit the second bucket size) . The second upper limit value may be the same as or different from the first upper limit value.
[0155] At 445, for example, the UE 115 may continue allocating resources 230 to the second logical channel 235 if the UE 115 determines that the second bucket size associated with the second logical channel 235 is not met. Alternatively, the UE 115 may determine that one or more packets 245 for which the UE 115 has allocated resources 230 meet (such as are approximately equal to without exceeding) the second bucket size. The UE 115 may allocate resources 230 to the second logical channel 235 (such as to packets 245 associated with the second logical channel 235) until the second bucket size is met or until all data associated with the second logical channel 235 has been transmitted or otherwise allocated resources 230.
[0156] At 450, in accordance with meeting the second bucket size or allocating resources 230 to all data associated with the second logical channel 235, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether additional resources 230 associated with the uplink grant 220 are available. For example, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether, after allocating resources 230 to the first logical channel 235 at 420 and the second logical channel 235 at 440, there are any remaining resources 230 associated with the uplink grant 220.
[0157] If the UE 115 determines that there are not any (or sufficient) remaining resources 230 associated with the uplink grant 220, at 460, the UE 115 may end the resource allocation 240.
[0158] Alternatively, if the UE 115 determines that there are remaining resources 230 associated with the uplink grant 220, at 435, the UE 115 may continue to allocate resources 230 associated with the uplink grant 220 to one or more other logical channels 235 at the UE 115 that have available data. For example, the UE 115 may allocate resources 230 associated with the uplink grant 220 to a third logical channel 235 to meet a third bucket size associated with the third logical channel 235 (or to transmit all available data associated with the third logical channel 235) , may allocate resources 230 associated with the uplink grant 220 to a fourth logical channel 235 to meet a fourth bucket size associated with the fourth logical channel 235 (or to transmit all available data associated with the fourth logical channel 235) if resources 230 remain after allocating to the third logical channel 235, and so on. The third bucket size and the fourth bucket size may be associated with a third upper limit value and a fourth upper limit value, respectively, which may be the same as or different from the first upper limit size or the second upper limit size.
[0159] If there are still remaining resources 230 associated with the uplink grant 220 after a first round of resource allocation (such as if the UE 115 allocates at least a set of resources 230 to each logical channel 235 at the UE 115 that has available data) , the UE 115 may perform a second round of resource allocation. In some aspects, steps 420-450 may be associated with one round of resource allocation (in examples in which the logical channels 235 that have available data include the first logical channel 235 and the second logical channel 235) . The UE 115 may repeat steps 420-450 in a second round of resource allocation. Although illustrated in the example of the logical channels 235 that have available data including the first logical channel 235 and the second logical channel 235, the logical channels 235 that have available data may include any quantity of logical channels 235.
[0160] In accordance with the resource allocation scheme 400, the UE 115 may provide more frequent resource allocation 240 among logical channels 235, which may benefit all logical channels 235 at the UE 115 that have data available for transmission. For example, by using or configuring one or more upper limit values associated with one or more bucket sizes (including, for example, a relatively more aggressive constraint for a high (such as highest) priority logical channel 235) , a relatively larger amount of resources 230 may be left or available for relatively lower priority logical channels 235 (and for relatively lower priority traffic flows) . In other words, the UE 115 may provide more resources 230 to various logical channels 235 by facilitating relatively more rounds of (more frequent) resource allocation among logical channels 235 in accordance with using or configuring one or more upper limit values (such as a relatively aggressive upper limit value for each logical channel 235 for allocated resource) . In some aspects, one or more bucket size durations may be configured for traffic of a given application (such as for XR traffic) , with a relatively small bucket size duration providing a cap or limit for at least a high priority logical channel 235 (which may leave sufficient resources 230 for urgent (such as time-sensitive) but relatively lower priority logical channels 235) . Thus, the UE 115 may avoid or limit scenarios in which a relatively high priority flow with a relatively large data volume occupies an amount of resources 230, at the first round of resource allocation, such that one or more logical channels 235 carrying relatively lower priority but urgent traffic flows (even with relatively small data volumes) are not provided a resource grant.
[0161] Figure 5 shows an example resource allocation scheme 500 associated with a rule that defines a service order for a set of logical channels 235 in accordance with a respective latency metric associated with each logical channel 235 of the set of logical channels 235. The resource allocation scheme 500 may implement or be implemented to realize one or more aspects of the wireless communications system 100 or the signaling diagram 200. For example, a UE 115 (or any other wireless communication device) may implement the resource allocation scheme 500 to allocate resources 230 associated with an uplink grant 220 to one or more logical channels 235 at the UE 115. The resource allocation scheme 500 may be an example of the resource allocation scheme 215.
[0162] The resource allocation scheme 500 may be associated with a rule that defines a service order associated with a set of logical channels 235 in accordance with a respective latency metric associated with each logical channel 235 of the set of logical channels 235. For example, the resource allocation scheme 500 may define how remaining resources 230 (such as resources 230 associated with the uplink grant 220 after an initial round of resource allocation or after a resource allocation associated with a baseline resource allocation scheme) can be allocated to each logical channel 235 in an order of increasing RBD or PDB until the data for that logical channel 235 is completely transmitted or the uplink grant 220 is exhausted, whichever comes first.
[0163] In the example of the resource allocation scheme 500, at 505, the UE 115 may receive an indication of an uplink grant 220 for the UE 115. The UE 115 may receive the uplink grant 220 via RRC signaling, one or more MAC-CEs, one or more DCI formats, or any combination thereof. The UE 115 (or any other wireless communication device implementing the resource allocation scheme 500) may alternatively receive a grant of resources 230 separate from an uplink grant 220 (such as a sidelink grant, a downlink grant, or any other scheduled or allocated resources usable for wireless communications) .
[0164] At 510, the UE 115 may determine, select, identify, or otherwise ascertain which one or more logical channels 235 at the UE 115 have available data. Available data may include or refer to a presence of one or more buffered, queued, or otherwise transmission-ready packets associated with a logical channel 235. In some examples, and as illustrated in the example of the signaling diagram 200, the UE 115 may determine that the logical channel 235-a, the logical channel 235-b, and the logical channel 235-c have available data.
[0165] At 515, the UE 115 may determine, select, identify, or otherwise ascertain which of the one or more logical channels 235 that have available data has a relatively highest priority. Such a priority may be a baseline, fixed, or configured priority or may be a dynamic, latency-based, or latency-related priority. In some aspects, the UE 115 may determine that a first logical channel 235 (such as the logical channel 235-a) has a relatively highest priority.
[0166] At 520, the UE 115 may allocate resources 230 to the first logical channel 235 determined, selected, identified, or otherwise ascertained as the highest priority logical channel 235. For example, the UE 115 may allocate a first set of resources 230 associated with the uplink grant 220 to one or more packets 245 associated with the first logical channel 235. For example, the UE 115 may allocate resources 230, in a decreasing priority order, to selected logical channels 235 for the uplink grant 220 with a bucket size greater than zero. If a PBR of a logical channel 235 (such as the first logical channel 235) is set to “infinity, ” a MAC entity of the UE 115 shall allocate resources 230 for all the data that is available for transmission on the logical channel 235 before meeting the PBR of one or more relatively lower priority logical channels 235.
[0167] At 525, the UE 115 may decrement a bucket size (such as a bucket size Bj) by a total size of a set of MAC SDUs served to the first logical channel 235 (such as a logical channel 235 LCj) .
[0168] At 530, in accordance with allocating resources 230 to the first logical channel 235, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether additional resources 230 associated with the uplink grant 220 are available. For example, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether, after allocating resources 230 to the first logical channel 235 at 520, there are any remaining resources 230 associated with the uplink grant 220.
[0169] If the UE 115 determines that there are not any (or sufficient) remaining resources 230 associated with the uplink grant 220, at 560, the UE 115 may end the resource allocation 240.
[0170] Alternatively, if the UE 115 determines that there are remaining resources 230 associated with the uplink grant 220, the UE 115 may serve one or more other logical channels 235 at the UE 115 that have available data. In some systems, if any resources 230 remain, the UE 115 may employ a baseline resource allocation scheme to serve each logical channel 235 a set of selected logical channels 235 in a decreasing priority order (regardless of a value of an associated bucket size Bj) until either the data for that logical channel 235 or the uplink grant 220 is exhausted, whichever comes first. In some aspects, the UE 115 may serve logical channels 235 configured with an equal (baseline, fixed, or configured) priority equally.
[0171] Additionally, or alternatively, if the UE 115 determines that there are remaining resources 230 associated with the uplink grant 220, the UE 115 may serve one or more logical channels 235 (after a relatively highest priority logical channel 235, such as after a logical channel 235 associated with an “infinite” PBR or a PBR that is greater than a threshold value) in accordance with a service order that is associated with a respective latency metric associated with each logical channel 235 of the one or more logical channels 235. Such a latency metric may refer to one or both of an RDB or a PDB. Further, such a service order may be understood or referred to as a latency-related resource allocation service order. Generally, the latency-related resource allocation service order may define that, if any resources 230 remain, and if a setting (such as an “enhanced RDB / PDB” setting) is triggered or set to ‘enable, ’ the UE 115 may serve each logical channel 235 of a set of selected logical channels 235 in decreasing order by considering a latency metric (such as an RDB or a PDB) of each of the logical channels 235 until either the data for that logical channel 235 or the uplink grant 220 is exhausted, whichever comes first. In some aspects, the UE 115 may serve logical channels 235 configured or associated with equal latency metrics (such as equal RDB or PDB values) equally. The UE 115 may employ such a latency-related resource allocation service order subsequent to, instead of, or prior to the baseline resource allocation scheme.
[0172] For example, at 535, the UE 115 may determine, select, identify, or otherwise ascertain which of the one or more logical channels 235 that have available data has a relatively smallest latency metric (such as a relatively smallest RDB or PDB value) . In some aspects, the UE 115 may determine that a second logical channel 235 (such as the logical channel 235-b) has a relatively smallest latency metric.
[0173] At 540, the UE 115 may allocate resources 230 to the second logical channel 235 determined, selected, identified, or otherwise ascertained as having the relatively smallest latency metric. For example, the UE 115 may allocate a second set of resources 230 associated with the uplink grant 220 to one or more packets 245 associated with the second logical channel 235.
[0174] At 545, in accordance with allocating resources 230 to the second logical channel 235, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether additional resources 230 associated with the uplink grant 220 are available. For example, the UE 115 may determine, select, identify, measure, calculate, or otherwise ascertain whether, after allocating resources 230 to the first logical channel 235 at 520 and the second logical channel 235 at 540, there are any remaining resources 230 associated with the uplink grant 220.
[0175] If the UE 115 determines that there are not any (or sufficient) remaining resources 230 associated with the uplink grant 220, at 565, the UE 115 may end the resource allocation 240.
[0176] Alternatively, if the UE 115 determines that there are remaining resources 230 associated with the uplink grant 220, at 550, the UE 115 may determine a next logical channel with a next smallest latency metric, if present (such as if another logical channel 235 has yet to be served by the UE 115) . For example, the UE 115 may determine that a third logical channel 235 (such as the logical channel 235-c) has a next smallest latency metric after the second logical channel 235 and has data available for transmission.
[0177] At 555, the UE 115 may allocate resources 230 to the next logical channel 235 determined, selected, identified, or otherwise ascertained as having the next smallest latency metric. For example, the UE 115 may allocate a third set of resources 230 associated with the uplink grant 220 to one or more packets 245 associated with the next logical channel 235. The UE 115 may repeat steps 545-555 until the UE 115 has served each selected logical channel 235 or until the uplink grant 220 is exhausted, whichever comes first. If the UE 115 exhausts (such as completely uses) the uplink grant 220, the UE 115 may end the resource allocation 240 at 565.
[0178] In accordance with the resource allocation scheme 500, the UE 115 may supplement or replace a baseline resource allocation scheme approach for allocating remaining resources 230 among the logical channels 235 at the UE 115 with available data. In accordance with such a latency-related resource allocation of the remaining resources 230 to the logical channels 235 at the UE 115, the UE 115 may have a greater likelihood of appropriately serving time-sensitive traffic flows across various logical channels 235 at the UE 115, even in scenarios in which different logical channels 235 are associated with different baseline, fixed, or configured priorities. In accordance with such a relatively more appropriate service to time-sensitive traffic flows, the UE 115 may provide a greater user experience and experience relatively fewer communication errors (including, for example, PDB failures) , among other benefits.
[0179] Figure 6 shows an example process flow 600 that illustrates communication between a UE and a network entity associated with capability signaling, configuration signaling, activation signaling, and signaling related to an autonomous selection that support logical channel resource allocation for latency-sensitive traffic. The process flow 600 may implement or be implemented to realize one or more of the wireless communications system 100, the signaling diagram 200, the resource allocation scheme 300, the resource allocation scheme 400, or the resource allocation scheme 500. For example, the process flow 600 illustrates communication between a UE 115 and a network entity 105, which may be examples of corresponding devices as illustrated and described herein, including by and with reference to Figures 1–5.
[0180] Alternative examples of the following may be implemented. Some steps may be performed in a different order than described or may not be performed at all. In some implementations, steps may include additional features not mentioned below, or further steps may be added. Further, although example devices are shown performing the operations of the process flow 600, some aspects of some operations also may be performed by one or more other wireless communication devices without exceeding the scope of the present disclosure. For example, the network entity 105 may perform some aspects of some operations across multiple components, which may be disaggregated or collocated.
[0181] At 605, the UE 115 may transmit information indicative of a capability associated with the UE 115 associated with a resource allocation scheme 215 for a resource allocation 240 to a set of logical channels 235 at the UE 115. In some implementations, the UE 115 may indicate one or more types or variants of resource allocation schemes 215 that the UE 115 is capable of employing or using. For example, the UE 115 may indicate, via the capability, that the UE 115 is capable of one or more of the resource allocation scheme 300, the resource allocation scheme 400, or the resource allocation scheme 500. Additionally, or alternatively, the UE 115 may generally indicate that the UE 115 is capable of a latency-related resource allocation scheme (with or without indicating one or more specific schemes that the UE 115 is capable of supporting) . The UE 115 may transmit the information indicative of the capability of the UE 115 via UCI, one or more MAC-CEs, or one or more RRC information elements.
[0182] At 610, the UE 115 may receive, from the network entity 105, information associated with the resource allocation 240 to the set of logical channels 235. Additionally, or alternatively, the UE 115 may retrieve such information from one or more memories of the UE 115. In some aspects, such information associated with a resource allocation 240 may be equivalently referred to or understood as information associated with a resource allocation scheme 215. Such information may include an indication of one or more parameters, values (such as one or more upper limit values) , or thresholds (such as one or more threshold time values) associated with the resource allocation 240 or the resource allocation scheme 215 at the UE 115. Additionally, or alternatively, such information may indicate or define a rule associated with the resource allocation 240 or the resource allocation scheme 215 at the UE 115. The UE 115 may receive such information via RRC signaling, one or more MAC-CEs, or DCI.
[0183] At 615, the UE 115 may receive, from the network entity 105, information indicative of an activation associated with a resource allocation scheme 215 for the resource allocation 240 to the set of logical channels 235. For example, the network entity 105 may dynamically, semi-persistently, or periodically activate or deactivate a resource allocation scheme 215, such as any one or more of the resource allocation scheme 300, the resource allocation scheme 400, or the resource allocation scheme 500. In other words, the network entity 105 may indicate (such as inform) the UE 115 regarding an active mechanism or scheme for resource allocation 240. Such information indicative of the activation may indicate that a baseline resource allocation scheme is active or that a latency-related resource allocation scheme is active (such as a resource allocation scheme 215 that accounts for both baseline logical channel priority and latency, such as any one or more of the resource allocation scheme 300, the resource allocation scheme 400, or the resource allocation scheme 500) . The UE 115 may receive such information indicative of the activation via RRC signaling, one or more MAC-CEs, or DCI. The UE 115 may activate a resource allocation scheme 215 in accordance with receiving the information indicative of the activation from the network entity 105.
[0184] At 620, the UE 115 may receive, from the network entity 105, information indicative of a criteria associated with an autonomous selection, at the UE 115, associated with a resource allocation scheme 215 for the resource allocation 240 to the set of logical channels 235. Additionally, or alternatively, the UE 115 may retrieve such information from one or more memories of the UE 115. For example, the UE 115 may autonomously select a resource allocation scheme 215 (which may be referred to as a resource allocation mechanism) according to a configured rule (such as a rule configured or indicated by the network entity 105 or a network specification) . In some implementations, the criteria may include one or more threshold time values. In such implementations, the UE 115 may use knowledge associated with an RDB of each logical channel 235 at the UE 115 and a priority of each logical channel 235 at the UE 115 and, in some examples, may compare an RDB and a threshold time value. If an RDB fails to satisfy (such as is less than, or is less than or equal to) a threshold time value, the UE 115 may select a latency-related resource allocation scheme 215, such as any one or more of the resource allocation scheme 300, the resource allocation scheme 400, or the resource allocation scheme 500. Otherwise, if all or a set of RDBs satisfy (such as are greater than, or are greater than or equal to) a threshold time value, the UE 115 may select a baseline resource allocation scheme.
[0185] At 625, the UE 115 may transmit, to the network entity 105, uplink data 225 via one or more sets of resources 230 associated with an uplink grant 220 in accordance with the resource allocation scheme 215. For example, if the UE 115 selects or is indicated to use a latency-related resource allocation scheme 215, the UE 115 may allocate resources 230 associated with an uplink grant 220 to one or more logical channels 235 in accordance with one or more of the resource allocation scheme 300, the resource allocation scheme 400, or the resource allocation scheme 500, which the UE 115 may use separately or in any combination. The UE 115 may transmit a respective set of one or more packets associated with each of the one or more logical channels 235 to which resources 230 are allocated. In some aspects, the UE 115 may transmit all of a set of buffered packets associated with a logical channel 235 to which resources 230 are allocated (via a single or across multiple resource allocation rounds) . Alternatively, the UE 115 may transmit a subset of one or more packets of a larger set of buffered packets associated with a logical channel to which resources 230 are allocated (via a single or across multiple resource allocation rounds) . Such a subset of one or more packets may include one or more packets that are relatively urgent, such as one or more packets relatively most at risk to fail a latency target (such as a PDB) .
[0186] Figure 7 shows a block diagram 700 of a device 705 that supports logical channel resource allocation for latency-sensitive traffic. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705, or one or more components of the device 705 (such as the receiver 710, the transmitter 715, the communications manager 720) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (such as via one or more buses) .
[0187] The receiver 710 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (such as control channels, data channels, information channels related to logical channel resource allocation for latency-sensitive traffic) . Information may be passed on to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.
[0188] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (such as control channels, data channels, information channels related to logical channel resource allocation for latency-sensitive traffic) . In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.
[0189] The communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be examples of means for performing various aspects of logical channel resource allocation for latency-sensitive traffic as described herein. For example, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0190] In some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (such as in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (such as by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0191] Additionally, or alternatively, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code (as communications management software or firmware) executed by at least one processor (such as referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (such as configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0192] In some examples, the communications manager 720 may be configured to perform various operations (such as receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.
[0193] The communications manager 720 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 720 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The communications manager 720 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The communications manager 720 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0194] Additionally, or alternatively, the communications manager 720 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 720 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 720 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The communications manager 720 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The communications manager 720 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0195] Additionally, or alternatively, the communications manager 720 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 720 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The communications manager 720 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 720 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0196] By including or configuring the communications manager 720 in accordance with examples as described herein, the device 705 (such as at least one processor controlling or otherwise coupled with the receiver 710, the transmitter 715, the communications manager 720, or a combination thereof) may support techniques for reduced processing, reduced power consumption, and more efficient utilization of communication resources.
[0197] Figure 8 shows a block diagram 800 of a device 805 that supports logical channel resource allocation for latency-sensitive traffic. The device 805 may be an example of aspects of a device 705 or a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805, or one or more components of the device 805 (such as the receiver 810, the transmitter 815, the communications manager 820) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (such as via one or more buses) .
[0198] The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (such as control channels, data channels, information channels related to logical channel resource allocation for latency-sensitive traffic) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
[0199] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (such as control channels, data channels, information channels related to logical channel resource allocation for latency-sensitive traffic) . In some examples, the transmitter 815 may be co-located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
[0200] The device 805, or various components thereof, may be an example of means for performing various aspects of logical channel resource allocation for latency-sensitive traffic as described herein. For example, the communications manager 820 may include a resource allocation scheme component 825, an uplink grant component 830, a logical channel resource allocation component 835, a logical channel resource allocation component 840, or any combination thereof. The communications manager 820 may be an example of aspects of a communications manager 720 as described herein. In some examples, the communications manager 820, or various components thereof, may be configured to perform various operations (such as receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
[0201] The communications manager 820 may support wireless communication in accordance with examples as disclosed herein. The resource allocation scheme component 825 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The uplink grant component 830 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The logical channel resource allocation component 835 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0202] Additionally, or alternatively, the communications manager 820 may support wireless communication in accordance with examples as disclosed herein. The resource allocation scheme component 825 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The uplink grant component 830 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The logical channel resource allocation component 840 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The logical channel resource allocation component 840 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0203] Additionally, or alternatively, the communications manager 820 may support wireless communication in accordance with examples as disclosed herein. The uplink grant component 830 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The logical channel resource allocation component 840 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The logical channel resource allocation component 840 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0204] Figure 9 shows a block diagram 900 of a communications manager 920 that supports logical channel resource allocation for latency-sensitive traffic. The communications manager 920 may be an example of aspects of a communications manager 720, a communications manager 820, or both, as described herein. The communications manager 920, or various components thereof, may be an example of means for performing various aspects of logical channel resource allocation for latency-sensitive traffic as described herein. For example, the communications manager 920 may include a resource allocation scheme component 925, an uplink grant component 930, a logical channel resource allocation component 935, a logical channel resource allocation component 940, a capability component 945, or any combination thereof. Each of these components, or components or subcomponents thereof (such as one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (such as via one or more buses) .
[0205] The communications manager 920 may support wireless communication in accordance with examples as disclosed herein. The resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The uplink grant component 930 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The logical channel resource allocation component 935 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0206] In some examples, the logical channel resource allocation component 940 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant, the one or more second packets of the second set of buffered packets associated with the second logical channel after transmitting the one or more first packets of the first set of buffered packets associated with the first logical channel.
[0207] In some examples, transmitting the one or more second packets of the second set of buffered packets via the second set of resources is in association with a remainder of the first set of buffered packets excluding the one or more first packets having one or more latency headroom values that satisfy the threshold time value.
[0208] In some examples, the logical channel resource allocation component 940 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant, one or more third packets of a third set of buffered packets associated with a third logical channel prior to transmitting the one or more second packets the second set of buffered packets associated with the second logical channel in accordance with a second latency headroom value associated with the one or more third packets failing to satisfy the threshold time value, the set of multiple logical channels further including the third logical channel.
[0209] In some examples, the one or more first packets of the first set of buffered packets associated with the first logical channel are transmitted prior to the one or more third packets of the third set of buffered packets associated with the third logical channel in accordance with a dynamic prioritization between logical channels associated with buffered packets having latency headroom values that fail to satisfy the threshold time value.
[0210] In some examples, the dynamic prioritization indicates that the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value are prioritized in an increasing order of latency headroom value.
[0211] In some examples, in accordance with the dynamic prioritization, a logical channel associated with a buffered packet having a relatively smallest latency headroom value, of the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value, has a relatively highest dynamic priority.
[0212] In some examples, the dynamic prioritization further indicates that, for two or more logical channels having a same latency headroom value, the two or more logical channels are prioritized in an increasing order of packet delay budget value.
[0213] In some examples, the dynamic prioritization further indicates that, in accordance with the two or more logical channels having the same latency headroom value and a same packet delay budget value, the two or more logical channels are prioritized in accordance with a respective baseline priority associated with each of the two or more logical channels.
[0214] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving information indicative of an activation associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0215] In some examples, the resource allocation scheme enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0216] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0217] In some examples, the criteria includes the threshold time value. In some examples, a first resource allocation scheme that enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel is autonomously selected in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0218] In some examples, the capability component 945 is capable of, configured to, or operable to support a means for transmitting information indicative of a capability associated with the UE associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels, the resource allocation scheme enabling transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0219] In some examples, each logical channel of the set of multiple logical channels is associated with a respective latency-sensitive traffic flow. In some examples, each latency-sensitive traffic flow is associated with a respective packet delay budget.
[0220] Additionally, or alternatively, the communications manager 920 may support wireless communication in accordance with examples as disclosed herein. In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. In some examples, the uplink grant component 930 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The logical channel resource allocation component 940 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. In some examples, the logical channel resource allocation component 940 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0221] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving an indication of a second upper limit value associated with a second bucket size for the second logical channel, the one or more second packets meeting the second bucket size in accordance with the second upper limit value.
[0222] In some examples, the first upper limit value is smaller than the second upper limit value.
[0223] In some examples, the first upper limit value is a first constraint on the first bucket size and the second upper limit value is a second constraint on the second bucket size.
[0224] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving the indication of the first upper limit value as a first bucket size duration associated with the first bucket size in accordance with a rule defining that a bucket size duration associated with a logical channel having a relatively highest priority is constrained to a subset of relatively smallest bucket size durations of a set of available bucket size durations, the first bucket size equal to a product of a first prioritized bit rate associated with the first logical channel and the first bucket size duration.
[0225] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving an indication of a second upper limit value associated with a second bucket size for the second logical channel as a second bucket size duration associated with the second bucket size, the second bucket size equal to a second product of a second prioritized bit rate for the second logical channel and the second bucket size duration.
[0226] In some examples, the rule is activated in accordance with each logical channel of the set of multiple logical channels being associated with a respective latency-sensitive traffic flow.
[0227] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving information indicative of an activation associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0228] In some examples, the resource allocation scheme limits an amount of resources associated with the uplink grant allocated to packets associated with the first logical channel having the first priority by increasing a quantity of resource allocation rounds across the set of multiple logical channels in accordance with the first upper limit value.
[0229] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0230] In some examples, the criteria includes a threshold time value. In some examples, a first resource allocation scheme that limits an amount of resources associated with the uplink grant allocated to packets associated with the first logical channel having the first priority by increasing a quantity of resource allocation rounds across the set of multiple logical channels in accordance with the first upper limit value is autonomously selected in accordance with at least one buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0231] In some examples, the capability component 945 is capable of, configured to, or operable to support a means for transmitting information indicative of a capability associated with the UE associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels, the resource allocation scheme limiting an amount of resources associated with the uplink grant allocated to packets associated with the first logical channel having the first priority by increasing a quantity of resource allocation rounds across the set of multiple logical channels in accordance with the first upper limit value.
[0232] In some examples, each logical channel of the set of multiple logical channels is associated with a respective latency-sensitive traffic flow. In some examples, each latency-sensitive traffic flow is associated with a respective packet delay budget.
[0233] Additionally, or alternatively, the communications manager 920 may support wireless communication in accordance with examples as disclosed herein. In some examples, the uplink grant component 930 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. In some examples, the logical channel resource allocation component 940 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. In some examples, the logical channel resource allocation component 940 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0234] In some examples, the rule defines that each logical channel of the set of multiple logical channels is served in an increasing order of latency metric until either data for that logical channel is completely transmitted or until the uplink grant is completely used.
[0235] In some examples, the rule further defines that two or more logical channels associated with a same latency metric are served equally.
[0236] In some examples, the logical channel resource allocation component 940 is capable of, configured to, or operable to support a means for transmitting, via a third set of resources associated with the uplink grant and after transmitting the one or more second packets, one or more third packets of a third set of buffered packets associated with a third logical channel in accordance with the rule that defines the service order associated with the set of multiple logical channels, the second logical channel associated with a first latency metric that is smaller than a second latency metric associated with the third logical channel, and the set of multiple logical channels further including the third logical channel.
[0237] In some examples, the first latency metric is a first remaining delay budget or a first packet delay budget. In some examples, the second latency metric is a second remaining delay budget or a second packet delay budget.
[0238] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving information indicative of an activation associated with a resource allocation scheme for a resource allocation to the set of multiple logical channels.
[0239] In some examples, the resource allocation scheme is associated with the rule that defines the service order associated with the set of multiple logical channels in accordance with the respective latency metric associated with each logical channel of the set of multiple logical channels.
[0240] In some examples, the resource allocation scheme component 925 is capable of, configured to, or operable to support a means for receiving information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for a resource allocation to the set of multiple logical channels.
[0241] In some examples, the criteria includes a threshold time value. In some examples, a first resource allocation scheme associated with the rule that defines the service order associated with the set of multiple logical channels in accordance with the respective latency metric associated with each logical channel of the set of multiple logical channels is autonomously selected in accordance with at least one buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0242] In some examples, the capability component 945 is capable of, configured to, or operable to support a means for transmitting information indicative of a capability associated with the UE associated with a resource allocation scheme for a resource allocation to the set of multiple logical channels, the resource allocation scheme being associated with the rule that defines the service order associated with the set of multiple logical channels in accordance with the respective latency metric associated with each logical channel of the set of multiple logical channels.
[0243] In some examples, each logical channel of the set of multiple logical channels is associated with a respective latency-sensitive traffic flow. In some examples, each latency-sensitive traffic flow is associated with a respective packet delay budget.
[0244] Figure 10 shows a diagram of a system 1000 including a device 1005 that supports logical channel resource allocation for latency-sensitive traffic. The device 1005 may be an example of or include components of a device 705, a device 805, or a UE 115 as described herein. The device 1005 may communicate (such as wirelessly) with one or more other devices (such as network entities 105, UEs 115, or a combination thereof) . The device 1005 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1020, an input / output (I / O) controller, such as an I / O controller 1010, a transceiver 1015, one or more antennas 1025, at least one memory 1030, code 1035, and at least one processor 1040. These components may be in electronic communication or otherwise coupled (such as operatively, communicatively, functionally, electronically, electrically) via one or more buses (such as a bus 1045) .
[0245] The I / O controller 1010 may manage input and output signals for the device 1005. The I / O controller 1010 also may manage peripherals not integrated into the device 1005. In some examples, the I / O controller 1010 may represent a physical connection or port to an external peripheral. In some examples, the I / O controller 1010 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1010 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some examples, the I / O controller 1010 may be implemented as part of one or more processors, such as the at least one processor 1040. In some examples, a user may interact with the device 1005 via the I / O controller 1010 or via hardware components controlled by the I / O controller 1010.
[0246] In some examples, the device 1005 may include a single antenna. However, in some other cases, the device 1005 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bi-directionally via the one or more antennas 1025 using wired or wireless links as described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1015 also may include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1025 for transmission, and to demodulate packets received from the one or more antennas 1025. The transceiver 1015, or the transceiver 1015 and one or more antennas 1025, may be an example of a transmitter 715, a transmitter 815, a receiver 710, a receiver 810, or any combination thereof or component thereof, as described herein.
[0247] The at least one memory 1030 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 1030 may store computer-readable, computer-executable, or processor-executable code, such as the code 1035. The code 1035 may include instructions that, when executed by the at least one processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some examples, the code 1035 may not be directly executable by the at least one processor 1040 but may cause a computer (such as when compiled and executed) to perform functions described herein. In some examples, the at least one memory 1030 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0248] The at least one processor 1040 may include one or more intelligent hardware devices (such as one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some examples, the at least one processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1040. The at least one processor 1040 may be configured to execute computer-readable instructions stored in a memory (such as the at least one memory 1030) to cause the device 1005 to perform various functions (such as functions or tasks supporting logical channel resource allocation for latency-sensitive traffic) . For example, the device 1005 or a component of the device 1005 may include at least one processor 1040 and at least one memory 1030 coupled with or to the at least one processor 1040, the at least one processor 1040 and the at least one memory 1030 configured to perform various functions described herein.
[0249] In some examples, the at least one processor 1040 may include multiple processors and the at least one memory 1030 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described herein. In some examples, the at least one processor 1040 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1040) and memory circuitry (which may include the at least one memory 1030) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1040 or a processing system including the at least one processor 1040 may be configured to, configurable to, or operable to cause the device 1005 to perform one or more of the functions described herein. In some implementations, one or more of the multiple memories may be configured to store processor-executable code that, when executed, may configure one or more of the multiple processors to perform various functions described herein (as part of a processing system) . In some other implementations, the processing system may be pre-configured to perform various functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code 1035 (such as processor-executable code) stored in the at least one memory 1030 or otherwise, to perform one or more of the functions described herein.
[0250] The processing system of the device 1005 includes processor (or “processing” ) circuitry in the form of one or multiple processors, microprocessors, processing units (such as CPUs, GPUs, NPUs (also referred to as neural network processors or DLPs) , or DSPs) , processing blocks, ASIC, PLDs (such as FPGAs) , or other discrete gate or transistor logic or circuitry (all of which may be generally referred to herein individually as “processors” or collectively as “the processor” or “the processor circuitry” ) . One or more of the processors may be individually or collectively configurable or configured to perform various functions or operations described herein. The processing system may further include memory circuitry in the form of one or more memory devices, memory blocks, memory elements or other discrete gate or transistor logic or circuitry, each of which may include tangible storage media such as RAM or ROM, or combinations thereof (all of which may be generally referred to herein individually as “memories” or collectively as “the memory” or “the memory circuitry” ) . One or more of the memories may be coupled with one or more of the processors and may individually or collectively store processor-executable code that, when executed by one or more of the processors, may configure one or more of the processors to perform various functions or operations described herein.
[0251] Additionally, or alternatively, in some examples, one or more of the processors may be preconfigured to perform various functions or operations described herein without requiring configuration by software. The processing system may further include or be coupled with one or more modems (such as a Wi-Fi (such as IEEE compliant) modem or a cellular (such as 3GPP 4G LTE, 5G or 6G compliant) modem) . In some implementations, one or more processors of the processing system include or implement one or more of the modems. The processing system may further include or be coupled with multiple radios (collectively “the radio” ) , multiple RF chains or multiple transceivers, each of which may in turn be coupled with one or more of multiple antennas. In some implementations, one or more processors of the processing system include or implement one or more of the radios, RF chains or transceivers.
[0252] The communications manager 1020 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1020 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The communications manager 1020 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The communications manager 1020 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0253] Additionally, or alternatively, the communications manager 1020 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1020 is capable of, configured to, or operable to support a means for receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 1020 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The communications manager 1020 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The communications manager 1020 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0254] Additionally, or alternatively, the communications manager 1020 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1020 is capable of, configured to, or operable to support a means for receiving an indication of an uplink grant for the UE. The communications manager 1020 is capable of, configured to, or operable to support a means for transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 1020 is capable of, configured to, or operable to support a means for transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0255] By including or configuring the communications manager 1020 in accordance with examples as described herein, the device 1005 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, and improved utilization of processing capability.
[0256] In some examples, the communications manager 1020 may be configured to perform various operations (such as receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1015, the one or more antennas 1025, or any combination thereof. Although the communications manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1020 may be supported by or performed by the at least one processor 1040, the at least one memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions executable by the at least one processor 1040 to cause the device 1005 to perform various aspects of logical channel resource allocation for latency-sensitive traffic as described herein, or the at least one processor 1040 and the at least one memory 1030 may be otherwise configured to, individually or collectively, perform or support such operations.
[0257] Figure 11 shows a block diagram 1100 of a device 1105 that supports logical channel resource allocation for latency-sensitive traffic. The device 1105 may be an example of aspects of a network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communications manager 1120. The device 1105, or one or more components of the device 1105 (such as the receiver 1110, the transmitter 1115, the communications manager 1120) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (such as via one or more buses) .
[0258] The receiver 1110 may provide a means for obtaining (such as receiving, determining, identifying) information such as user data, control information, or any combination thereof (such as I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (such as control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1105. In some examples, the receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1110 may support obtaining information by receiving signals via one or more wired (such as electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0259] The transmitter 1115 may provide a means for outputting (such as transmitting, providing, conveying, sending) information generated by other components of the device 1105. For example, the transmitter 1115 may output information such as user data, control information, or any combination thereof (such as I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (such as control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1115 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1115 may support outputting information by transmitting signals via one or more wired (such as electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be co-located in a transceiver, which may include or be coupled with a modem.
[0260] The communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be examples of means for performing various aspects of logical channel resource allocation for latency-sensitive traffic as described herein. For example, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0261] In some examples, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in hardware (such as in communications management circuitry) . The hardware may include at least one of a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (such as by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0262] Additionally, or alternatively, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in code (as communications management software or firmware) executed by at least one processor (such as referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (such as configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0263] In some examples, the communications manager 1120 may be configured to perform various operations (such as receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1110, the transmitter 1115, or both. For example, the communications manager 1120 may receive information from the receiver 1110, send information to the transmitter 1115, or be integrated in combination with the receiver 1110, the transmitter 1115, or both to obtain information, output information, or perform various other operations as described herein.
[0264] The communications manager 1120 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The communications manager 1120 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. The communications manager 1120 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0265] Additionally, or alternatively, the communications manager 1120 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 1120 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. The communications manager 1120 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The communications manager 1120 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0266] Additionally, or alternatively, the communications manager 1120 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for a UE. The communications manager 1120 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 1120 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0267] By including or configuring the communications manager 1120 in accordance with examples as described herein, the device 1105 (such as at least one processor controlling or otherwise coupled with the receiver 1110, the transmitter 1115, the communications manager 1120, or a combination thereof) may support techniques for reduced processing, reduced power consumption, and more efficient utilization of communication resources.
[0268] Figure 12 shows a block diagram 1200 of a device 1205 that supports logical channel resource allocation for latency-sensitive traffic. The device 1205 may be an example of aspects of a device 1105 or a network entity 105 as described herein. The device 1205 may include a receiver 1210, a transmitter 1215, and a communications manager 1220. The device 1205, or one or more components of the device 1205 (such as the receiver 1210, the transmitter 1215, the communications manager 1220) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (such as via one or more buses) .
[0269] The receiver 1210 may provide a means for obtaining (such as receiving, determining, identifying) information such as user data, control information, or any combination thereof (such as I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (such as control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1205. In some examples, the receiver 1210 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1210 may support obtaining information by receiving signals via one or more wired (such as electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0270] The transmitter 1215 may provide a means for outputting (such as transmitting, providing, conveying, sending) information generated by other components of the device 1205. For example, the transmitter 1215 may output information such as user data, control information, or any combination thereof (such as I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (such as control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1215 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1215 may support outputting information by transmitting signals via one or more wired (such as electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1215 and the receiver 1210 may be co-located in a transceiver, which may include or be coupled with a modem.
[0271] The device 1205, or various components thereof, may be an example of means for performing various aspects of logical channel resource allocation for latency-sensitive traffic as described herein. For example, the communications manager 1220 may include a resource allocation scheme component 1225, an uplink grant component 1230, a logical channel resource allocation component 1235, or any combination thereof. The communications manager 1220 may be an example of aspects of a communications manager 1120 as described herein. In some examples, the communications manager 1220, or various components thereof, may be configured to perform various operations (such as receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1210, the transmitter 1215, or both. For example, the communications manager 1220 may receive information from the receiver 1210, send information to the transmitter 1215, or be integrated in combination with the receiver 1210, the transmitter 1215, or both to obtain information, output information, or perform various other operations as described herein.
[0272] The communications manager 1220 may support wireless communication in accordance with examples as disclosed herein. The resource allocation scheme component 1225 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The uplink grant component 1230 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. The logical channel resource allocation component 1235 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0273] Additionally, or alternatively, the communications manager 1220 may support wireless communication in accordance with examples as disclosed herein. The resource allocation scheme component 1225 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The uplink grant component 1230 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. The logical channel resource allocation component 1235 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The logical channel resource allocation component 1235 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0274] Additionally, or alternatively, the communications manager 1220 may support wireless communication in accordance with examples as disclosed herein. The uplink grant component 1230 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for a UE. The logical channel resource allocation component 1235 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The logical channel resource allocation component 1235 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0275] Figure 13 shows a block diagram 1300 of a communications manager 1320 that supports logical channel resource allocation for latency-sensitive traffic. The communications manager 1320 may be an example of aspects of a communications manager 1120, a communications manager 1220, or both, as described herein. The communications manager 1320, or various components thereof, may be an example of means for performing various aspects of logical channel resource allocation for latency- sensitive traffic as described herein. For example, the communications manager 1320 may include a resource allocation scheme component 1325, an uplink grant component 1330, a logical channel resource allocation component 1335, a capability component 1340, or any combination thereof. Each of these components, or components or subcomponents thereof (such as one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (such as via one or more buses) . The communications may include communications within a protocol layer of a protocol stack, communications associated with a logical channel of a protocol stack (such as between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105) , or any combination thereof.
[0276] The communications manager 1320 may support wireless communication in accordance with examples as disclosed herein. The resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The uplink grant component 1330 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. The logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0277] In some examples, the logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant, the one or more second packets of the second set of buffered packets associated with the second logical channel after obtaining the one or more first packets of the first set of buffered packets associated with the first logical channel.
[0278] In some examples, obtaining the one or more second packets of the second set of buffered packets via the second set of resources is in association with a remainder of the first set of buffered packets excluding the one or more first packets having one or more latency headroom values that satisfy the threshold time value.
[0279] In some examples, the logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant, one or more third packets of a third set of buffered packets associated with a third logical channel prior to obtaining the one or more second packets the second set of buffered packets associated with the second logical channel in accordance with a second latency headroom value associated with the one or more third packets failing to satisfy the threshold time value, the set of multiple logical channels further including the third logical channel.
[0280] In some examples, the one or more first packets of the first set of buffered packets associated with the first logical channel are obtained prior to the one or more third packets of the third set of buffered packets associated with the third logical channel in accordance with a dynamic prioritization between logical channels associated with buffered packets having latency headroom values that fail to satisfy the threshold time value.
[0281] In some examples, the dynamic prioritization indicates that the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value are prioritized in an increasing order of latency headroom value.
[0282] In some examples, in accordance with the dynamic prioritization, a logical channel associated with a buffered packet having a relatively smallest latency headroom value, of the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value, has a relatively highest dynamic priority.
[0283] In some examples, the dynamic prioritization further indicates that, for two or more logical channels having a same latency headroom value, the two or more logical channels are prioritized in an increasing order of packet delay budget value.
[0284] In some examples, the dynamic prioritization further indicates that, in accordance with the two or more logical channels having the same latency headroom value and a same packet delay budget value, the two or more logical channels are prioritized in accordance with a respective baseline priority associated with each of the two or more logical channels.
[0285] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting information indicative of an activation associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0286] In some examples, the resource allocation scheme enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0287] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0288] In some examples, the criteria includes the threshold time value. In some examples, a first resource allocation scheme that enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel is autonomously selected in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0289] In some examples, the capability component 1340 is capable of, configured to, or operable to support a means for obtaining information indicative of a capability associated with the UE associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels, the resource allocation scheme enabling transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0290] In some examples, each logical channel of the set of multiple logical channels is associated with a respective latency-sensitive traffic flow. In some examples, each latency-sensitive traffic flow is associated with a respective packet delay budget.
[0291] Additionally, or alternatively, the communications manager 1320 may support wireless communication in accordance with examples as disclosed herein. In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. In some examples, the uplink grant component 1330 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. In some examples, the logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. In some examples, the logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0292] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting an indication of a second upper limit value associated with a second bucket size for the second logical channel, the one or more second packets meeting the second bucket size in accordance with the second upper limit value.
[0293] In some examples, the first upper limit value is smaller than the second upper limit value.
[0294] In some examples, the first upper limit value is a first constraint on the first bucket size and the second upper limit value is a second constraint on the second bucket size.
[0295] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting the indication of the first upper limit value as a first bucket size duration associated with the first bucket size in accordance with a rule defining that a bucket size duration associated with a logical channel having a relatively highest priority is constrained to a subset of relatively smallest bucket size durations of a set of available bucket size durations, the first bucket size equal to a product of a first prioritized bit rate associated with the first logical channel and the first bucket size duration.
[0296] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting an indication of a second upper limit value associated with a second bucket size for the second logical channel as a second bucket size duration associated with the second bucket size, the second bucket size equal to a second product of a second prioritized bit rate for the second logical channel and the second bucket size duration.
[0297] In some examples, the rule is activated in accordance with each logical channel of the set of multiple logical channels being associated with a respective latency-sensitive traffic flow.
[0298] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting information indicative of an activation associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0299] In some examples, the resource allocation scheme limits an amount of resources associated with the uplink grant allocated to packets associated with the first logical channel having the first priority by increasing a quantity of resource allocation rounds across the set of multiple logical channels in accordance with the first upper limit value.
[0300] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels.
[0301] In some examples, the criteria includes a threshold time value. In some examples, a first resource allocation scheme that limits an amount of resources associated with the uplink grant allocated to packets associated with the first logical channel having the first priority by increasing a quantity of resource allocation rounds across the set of multiple logical channels in accordance with the first upper limit value is autonomously selected in accordance with at least one buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0302] In some examples, the capability component 1340 is capable of, configured to, or operable to support a means for obtaining information indicative of a capability associated with the UE associated with a resource allocation scheme for the resource allocation to the set of multiple logical channels, the resource allocation scheme limiting an amount of resources associated with the uplink grant allocated to packets associated with the first logical channel having the first priority by increasing a quantity of resource allocation rounds across the set of multiple logical channels in accordance with the first upper limit value.
[0303] In some examples, each logical channel of the set of multiple logical channels is associated with a respective latency-sensitive traffic flow. In some examples, each latency-sensitive traffic flow is associated with a respective packet delay budget.
[0304] Additionally, or alternatively, the communications manager 1320 may support wireless communication in accordance with examples as disclosed herein. In some examples, the uplink grant component 1330 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for a UE. In some examples, the logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. In some examples, the logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0305] In some examples, the rule defines that each logical channel of the set of multiple logical channels is served in an increasing order of latency metric until either data for that logical channel is completely transmitted or until the uplink grant is completely used.
[0306] In some examples, the rule further defines that two or more logical channels associated with a same latency metric are served equally.
[0307] In some examples, the logical channel resource allocation component 1335 is capable of, configured to, or operable to support a means for obtaining, via a third set of resources associated with the uplink grant and after obtaining the one or more second packets, one or more third packets of a third set of buffered packets associated with a third logical channel in accordance with the rule that defines the service order associated with the set of multiple logical channels, the second logical channel associated with a first latency metric that is smaller than a second latency metric associated with the third logical channel, and the set of multiple logical channels further including the third logical channel.
[0308] In some examples, the first latency metric is a first remaining delay budget or a first packet delay budget. In some examples, the second latency metric is a second remaining delay budget or a second packet delay budget.
[0309] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting information indicative of an activation associated with a resource allocation scheme for a resource allocation to the set of multiple logical channels.
[0310] In some examples, the resource allocation scheme is associated with the rule that defines the service order associated with the set of multiple logical channels in accordance with the respective latency metric associated with each logical channel of the set of multiple logical channels.
[0311] In some examples, the resource allocation scheme component 1325 is capable of, configured to, or operable to support a means for outputting information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for a resource allocation to the set of multiple logical channels.
[0312] In some examples, the criteria includes a threshold time value. In some examples, a first resource allocation scheme associated with the rule that defines the service order associated with the set of multiple logical channels in accordance with the respective latency metric associated with each logical channel of the set of multiple logical channels is autonomously selected in accordance with at least one buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0313] In some examples, the capability component 1340 is capable of, configured to, or operable to support a means for obtaining information indicative of a capability associated with the UE associated with a resource allocation scheme for a resource allocation to the set of multiple logical channels, the resource allocation scheme being associated with the rule that defines the service order associated with the set of multiple logical channels in accordance with the respective latency metric associated with each logical channel of the set of multiple logical channels.
[0314] In some examples, each logical channel of the set of multiple logical channels is associated with a respective latency-sensitive traffic flow. In some examples, each latency-sensitive traffic flow is associated with a respective packet delay budget.
[0315] Figure 14 shows a diagram of a system 1400 including a device 1405 that supports logical channel resource allocation for latency-sensitive traffic. The device 1405 may be an example of or include components of a device 1105, a device 1205, or a network entity 105 as described herein. The device 1405 may communicate with other network devices or network equipment such as one or more of the network entities 105, UEs 115, or any combination thereof. The communications may include communications over one or more wired interfaces, over one or more wireless interfaces, or any combination thereof. The device 1405 may include components that support outputting and obtaining communications, such as a communications manager 1420, a transceiver 1410, one or more antennas 1415, at least one memory 1425, code 1430, and at least one processor 1435. These components may be in electronic communication or otherwise coupled (such as operatively, communicatively, functionally, electronically, electrically) via one or more buses (such as a bus 1440) .
[0316] The transceiver 1410 may support bi-directional communications via wired links, wireless links, or both as described herein. In some examples, the transceiver 1410 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1410 may include a wireless transceiver and may communicate bi-directionally with another wireless transceiver. In some examples, the device 1405 may include one or more antennas 1415, which may be capable of transmitting or receiving wireless transmissions (such as concurrently) . The transceiver 1410 also may include a modem to modulate signals, to provide the modulated signals for transmission (such as by one or more antennas 1415, by a wired transmitter) , to receive modulated signals (such as from one or more antennas 1415, from a wired receiver) , and to demodulate signals. In some implementations, the transceiver 1410 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1415 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1415 that are configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1410 may include or be configured for coupling with one or more processors or one or more memory components that are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other outputting, or any combination thereof. In some implementations, the transceiver 1410, or the transceiver 1410 and the one or more antennas 1415, or the transceiver 1410 and the one or more antennas 1415 and one or more processors or one or more memory components (such as the at least one processor 1435, the at least one memory 1425, or both) , may be included in a chip or chip assembly that is installed in the device 1405. In some examples, the transceiver 1410 may be operable to support communications via one or more communications links (such as communication link (s) 125, backhaul communication link (s) 120, a midhaul communication link 162, a fronthaul communication link 168) .
[0317] The at least one memory 1425 may include RAM, ROM, or any combination thereof. The at least one memory 1425 may store computer-readable, computer-executable, or processor-executable code, such as the code 1430. The code 1430 may include instructions that, when executed by one or more of the at least one processor 1435, cause the device 1405 to perform various functions described herein. The code 1430 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some examples, the code 1430 may not be directly executable by a processor of the at least one processor 1435 but may cause a computer (such as when compiled and executed) to perform functions described herein. In some examples, the at least one memory 1425 may include, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices. In some examples, the at least one processor 1435 may include multiple processors and the at least one memory 1425 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories which may, individually or collectively, be configured to perform various functions herein (as part of a processing system) .
[0318] The at least one processor 1435 may include one or more intelligent hardware devices (such as one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more GPUs, one or more NPUs (also referred to as neural network processors or DLPs) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some examples, the at least one processor 1435 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into one or more of the at least one processor 1435. The at least one processor 1435 may be configured to execute computer-readable instructions stored in a memory (such as one or more of the at least one memory 1425) to cause the device 1405 to perform various functions (such as functions or tasks supporting logical channel resource allocation for latency-sensitive traffic) . For example, the device 1405 or a component of the device 1405 may include at least one processor 1435 and at least one memory 1425 coupled with one or more of the at least one processor 1435, the at least one processor 1435 and the at least one memory 1425 configured to perform various functions described herein. The at least one processor 1435 may be an example of a cloud-computing platform (such as one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (such as by executing code 1430) to perform the functions of the device 1405. The at least one processor 1435 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1405 (such as within one or more of the at least one memory 1425) .
[0319] In some examples, the at least one processor 1435 may include multiple processors and the at least one memory 1425 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 1435 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1435) and memory circuitry (which may include the at least one memory 1425) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1435 or a processing system including the at least one processor 1435 may be configured to, configurable to, or operable to cause the device 1405 to perform one or more of the functions described herein. In some implementations, one or more of the multiple memories may be configured to store processor-executable code that, when executed, may configure one or more of the multiple processors to perform various functions described herein (as part of a processing system) . Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory 1425 or otherwise, to perform one or more of the functions described herein.
[0320] The processing system of the device 1405 includes processor (or “processing” ) circuitry in the form of one or multiple processors, microprocessors, processing units (such as CPUs, GPUs, NPUs (also referred to as neural network processors or DLPs) , or DSPs) , processing blocks, ASIC, PLDs (such as FPGAs) , or other discrete gate or transistor logic or circuitry (all of which may be generally referred to herein individually as “processors” or collectively as “the processor” or “the processor circuitry” ) . One or more of the processors may be individually or collectively configurable or configured to perform various functions or operations described herein. The processing system may further include memory circuitry in the form of one or more memory devices, memory blocks, memory elements or other discrete gate or transistor logic or circuitry, each of which may include tangible storage media such as RAM or ROM, or combinations thereof (all of which may be generally referred to herein individually as “memories” or collectively as “the memory” or “the memory circuitry” ) . One or more of the memories may be coupled with one or more of the processors and may individually or collectively store processor-executable code that, when executed by one or more of the processors, may configure one or more of the processors to perform various functions or operations described herein.
[0321] Additionally, or alternatively, in some examples, one or more of the processors may be preconfigured to perform various functions or operations described herein without requiring configuration by software. The processing system may further include or be coupled with one or more modems (such as a Wi-Fi (such as IEEE compliant) modem or a cellular (such as 3GPP 4G LTE, 5G or 6G compliant) modem) . In some implementations, one or more processors of the processing system include or implement one or more of the modems. The processing system may further include or be coupled with multiple radios (collectively “the radio” ) , multiple RF chains or multiple transceivers, each of which may in turn be coupled with one or more of multiple antennas. In some implementations, one or more processors of the processing system include or implement one or more of the radios, RF chains or transceivers.
[0322] In some examples, a bus 1440 may support communications of (such as within) a protocol layer of a protocol stack. In some examples, a bus 1440 may support communications associated with a logical channel of a protocol stack (such as between protocol layers of a protocol stack) , which may include communications performed within a component of the device 1405, or between different components of the device 1405 that may be co-located or located in different locations (such as where the device 1405 may refer to a system in which one or more of the communications manager 1420, the transceiver 1410, the at least one memory 1425, the code 1430, and the at least one processor 1435 may be located in one of the different components or divided between different components) .
[0323] In some examples, the communications manager 1420 may manage aspects of communications with a core network 130 (such as via one or more wired or wireless backhaul links) . For example, the communications manager 1420 may manage the transfer of data communications for client devices, such as one or more UEs 115. In some examples, the communications manager 1420 may manage communications with one or more other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 (such as in cooperation with the one or more other network devices) . In some examples, the communications manager 1420 may support an X2 interface within an LTE / LTE-A wireless communications network technology to provide communication between network entities 105.
[0324] The communications manager 1420 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1420 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The communications manager 1420 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. The communications manager 1420 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0325] Additionally, or alternatively, the communications manager 1420 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1420 is capable of, configured to, or operable to support a means for outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 1420 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for the UE. The communications manager 1420 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The communications manager 1420 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0326] Additionally, or alternatively, the communications manager 1420 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 1420 is capable of, configured to, or operable to support a means for outputting an indication of an uplink grant for a UE. The communications manager 1420 is capable of, configured to, or operable to support a means for obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The communications manager 1420 is capable of, configured to, or operable to support a means for obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels.
[0327] By including or configuring the communications manager 1420 in accordance with examples as described herein, the device 1405 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, and improved utilization of processing capability.
[0328] In some examples, the communications manager 1420 may be configured to perform various operations (such as receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1410, the one or more antennas 1415 (such as where applicable) , or any combination thereof. Although the communications manager 1420 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1420 may be supported by or performed by the transceiver 1410, one or more of the at least one processor 1435, one or more of the at least one memory 1425, the code 1430, or any combination thereof (such as by a processing system including at least a portion of the at least one processor 1435, the at least one memory 1425, the code 1430, or any combination thereof) . For example, the code 1430 may include instructions executable by one or more of the at least one processor 1435 to cause the device 1405 to perform various aspects of logical channel resource allocation for latency-sensitive traffic as described herein, or the at least one processor 1435 and the at least one memory 1425 may be otherwise configured to, individually or collectively, perform or support such operations.
[0329] Figure 15 shows a flowchart illustrating a method 1500 that supports logical channel resource allocation for latency-sensitive traffic. The operations of the method 1500 may be implemented by a UE or its components as described herein. For example, the operations of the method 1500 may be performed by a UE 115 as described with reference to Figures 1–10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0330] At 1505, the method may include receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The operations of 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a resource allocation scheme component 925 as described with reference to Figure 9.
[0331] At 1510, the method may include receiving an indication of an uplink grant for the UE. The operations of 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by an uplink grant component 930 as described with reference to Figure 9.
[0332] At 1515, the method may include transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value. The operations of 1515 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed by a logical channel resource allocation component 935 as described with reference to Figure 9.
[0333] Figure 16 shows a flowchart illustrating a method 1600 that supports logical channel resource allocation for latency-sensitive traffic. The operations of the method 1600 may be implemented by a UE or its components as described herein. For example, the operations of the method 1600 may be performed by a UE 115 as described with reference to Figures 1–10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0334] At 1605, the method may include receiving, via information associated with a resource allocation to a set of multiple logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The operations of 1605 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed by a resource allocation scheme component 925 as described with reference to Figure 9.
[0335] At 1610, the method may include receiving an indication of an uplink grant for the UE. The operations of 1610 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by an uplink grant component 930 as described with reference to Figure 9.
[0336] At 1615, the method may include transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The operations of 1615 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed by a logical channel resource allocation component 940 as described with reference to Figure 9.
[0337] At 1620, the method may include transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel. The operations of 1620 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1620 may be performed by a logical channel resource allocation component 940 as described with reference to Figure 9.
[0338] Figure 17 shows a flowchart illustrating a method 1700 that supports logical channel resource allocation for latency-sensitive traffic. The operations of the method 1700 may be implemented by a UE or its components as described herein. For example, the operations of the method 1700 may be performed by a UE 115 as described with reference to Figures 1–10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0339] At 1705, the method may include receiving an indication of an uplink grant for the UE. The operations of 1705 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed by an uplink grant component 930 as described with reference to Figure 9.
[0340] At 1710, the method may include transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The operations of 1710 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed by a logical channel resource allocation component 940 as described with reference to Figure 9.
[0341] At 1715, the method may include transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels. The operations of 1715 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed by a logical channel resource allocation component 940 as described with reference to Figure 9.
[0342] Figure 18 shows a flowchart illustrating a method 1800 that supports logical channel resource allocation for latency-sensitive traffic. The operations of the method 1800 may be implemented by a network entity or its components as described herein. For example, the operations of the method 1800 may be performed by a network entity as described with reference to Figures 1–6 and 11–14. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0343] At 1805, the method may include outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of a threshold time value associated with the resource allocation to the set of multiple logical channels, the set of multiple logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel. The operations of 1805 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed by a resource allocation scheme component 1325 as described with reference to Figure 13.
[0344] At 1810, the method may include outputting an indication of an uplink grant for the UE. The operations of 1810 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed by an uplink grant component 1330 as described with reference to Figure 13.
[0345] At 1815, the method may include obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value. The operations of 1815 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1815 may be performed by a logical channel resource allocation component 1335 as described with reference to Figure 13.
[0346] Figure 19 shows a flowchart illustrating a method 1900 that supports logical channel resource allocation for latency-sensitive traffic. The operations of the method 1900 may be implemented by a network entity or its components as described herein. For example, the operations of the method 1900 may be performed by a network entity as described with reference to Figures 1–6 and 11–14. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0347] At 1905, the method may include outputting, via information associated with a resource allocation to a set of multiple logical channels at a UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the set of multiple logical channels, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The operations of 1905 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1905 may be performed by a resource allocation scheme component 1325 as described with reference to Figure 13.
[0348] At 1910, the method may include outputting an indication of an uplink grant for the UE. The operations of 1910 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1910 may be performed by an uplink grant component 1330 as described with reference to Figure 13.
[0349] At 1915, the method may include obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value. The operations of 1915 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1915 may be performed by a logical channel resource allocation component 1335 as described with reference to Figure 13.
[0350] At 1920, the method may include obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel. The operations of 1920 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1920 may be performed by a logical channel resource allocation component 1335 as described with reference to Figure 13.
[0351] Figure 20 shows a flowchart illustrating a method 2000 that supports logical channel resource allocation for latency-sensitive traffic. The operations of the method 2000 may be implemented by a network entity or its components as described herein. For example, the operations of the method 2000 may be performed by a network entity as described with reference to Figures 1–6 and 11–14. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0352] At 2005, the method may include outputting an indication of an uplink grant for a UE. The operations of 2005 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2005 may be performed by an uplink grant component 1330 as described with reference to Figure 13.
[0353] At 2010, the method may include obtaining, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with a first logical channel of a set of multiple logical channels at the UE, the set of multiple logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel. The operations of 2010 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2010 may be performed by a logical channel resource allocation component 1335 as described with reference to Figure 13.
[0354] At 2015, the method may include obtaining, via a second set of resources associated with the uplink grant and after obtaining the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel in accordance with a rule that defines a service order associated with the set of multiple logical channels in accordance with a respective latency metric associated with each logical channel of the set of multiple logical channels. The operations of 2015 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2015 may be performed by a logical channel resource allocation component 1335 as described with reference to Figure 13.
[0355] The following provides an overview of aspects of the present disclosure:
[0356] Aspect 1: A method for wireless communication at a UE, including: receiving, via information associated with a resource allocation to a plurality of logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the plurality of logical channels, the plurality of logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel; receiving an indication of an uplink grant for the UE; and transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
[0357] Aspect 2: The method of aspect 1, further including: transmitting, via a second set of resources associated with the uplink grant, the one or more second packets of the second set of buffered packets associated with the second logical channel after transmitting the one or more first packets of the first set of buffered packets associated with the first logical channel.
[0358] Aspect 3: The method of aspect 2, wherein transmitting the one or more second packets of the second set of buffered packets via the second set of resources is in association with a remainder of the first set of buffered packets excluding the one or more first packets having one or more latency headroom values that satisfy the threshold time value.
[0359] Aspect 4: The method of any of aspects 1–3, further including: transmitting, via a second set of resources associated with the uplink grant, one or more third packets of a third set of buffered packets associated with a third logical channel prior to transmitting the one or more second packets the second set of buffered packets associated with the second logical channel in accordance with a second latency headroom value associated with the one or more third packets failing to satisfy the threshold time value, the plurality of logical channels further including the third logical channel.
[0360] Aspect 5: The method of aspect 4, wherein the one or more first packets of the first set of buffered packets associated with the first logical channel are transmitted prior to the one or more third packets of the third set of buffered packets associated with the third logical channel in accordance with a dynamic prioritization between logical channels associated with buffered packets having latency headroom values that fail to satisfy the threshold time value.
[0361] Aspect 6: The method of aspect 5, wherein the dynamic prioritization indicates that the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value are prioritized in an increasing order of latency headroom value.
[0362] Aspect 7: The method of aspect 6, wherein in accordance with the dynamic prioritization, a logical channel associated with a buffered packet having a relatively smallest latency headroom value, of the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value, has a relatively highest dynamic priority.
[0363] Aspect 8: The method of any of aspects 6–7, wherein the dynamic prioritization further indicates that, for two or more logical channels having a same latency headroom value, the two or more logical channels are prioritized in an increasing order of packet delay budget value.
[0364] Aspect 9: The method of aspect 8, wherein the dynamic prioritization further indicates that, in accordance with the two or more logical channels having the same latency headroom value and a same packet delay budget value, the two or more logical channels are prioritized in accordance with a respective baseline priority associated with each of the two or more logical channels.
[0365] Aspect 10: The method of any of aspects 1–9, further including: receiving information indicative of an activation associated with a resource allocation scheme for the resource allocation to the plurality of logical channels.
[0366] Aspect 11: The method of aspect 10, wherein the resource allocation scheme enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0367] Aspect 12: The method of any of aspects 1–11, further including: receiving information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for the resource allocation to the plurality of logical channels.
[0368] Aspect 13: The method of aspect 12, wherein the criteria includes the threshold time value, and a first resource allocation scheme that enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel is autonomously selected in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0369] Aspect 14: The method of any of aspects 1–13, further including: transmitting information indicative of a capability associated with the UE associated with a resource allocation scheme for the resource allocation to the plurality of logical channels, the resource allocation scheme enabling transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.
[0370] Aspect 15: The method of any of aspects 1–14, wherein each logical channel of the plurality of logical channels is associated with a respective latency-sensitive traffic flow, and each latency-sensitive traffic flow is associated with a respective packet delay budget.
[0371] Aspect 16: A method for wireless communication at a UE, including: receiving, via information associated with a resource allocation to a plurality of logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the plurality of logical channels, the plurality of logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel; receiving an indication of an uplink grant for the UE; transmitting, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value; and transmitting, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.
[0372] Aspect 17: The method of aspect 16, further including: receiving an indication of a second upper limit value associated with a second bucket size for the second logical channel, the one or more second packets meeting the second bucket size in accordance with the second upper limit value.
[0373] Aspect 18: The method of aspect 17, wherein the first upper limit value is smaller than the second upper limit value.
[0374] Aspect 19: The method of any of aspects 17–18, wherein the first upper limit value is a first constraint on the first bucket size and the second upper limit value is a second constraint on the second bucket size.
[0375] Aspect 20: The method of any of aspects 16–19, further including: receiving the indication of the first upper limit value as a first bucket size duration associated with the first bucket size in accordance with a rule defining that a bucket size duration associated with a logical channel having a relatively highest priority is constrained to a subset of relatively smallest bucket size durations of a set of available bucket size durations, the first bucket size equal to a product of a first prioritized bit rate associated with the first logical channel and the first bucket size duration.
[0376] Aspect 21: The method of aspect 20, further including: receiving an indication of a second upper limit value associated with a second bucket size for the second logical channel as a second bucket size duration associated with the second bucket size, the second bucket size equal to a second product of a second prioritized bit rate for the second logical channel and the second bucket size duration.
[0377] Aspect 22: The method of any of aspects 20–21, wherein the rule is activated in accordance with each logical channel of the plurality of logical channels being associated with a respective latency-sensitive traffic flow.
[0378] Aspect 23: The method of any of aspects 16–22, further including: receiving information indicative of an activation associated with a resource allocation scheme for the resource allocation to the plurality of logical channels.
[0379] Aspect 24: The method of...
Claims
1.An apparatus for wireless communication at a user equipment (UE) , comprising:a processing system that includes processor circuitry and memory circuitry that stores code, the processing system configured to cause the UE to:receive, via information associated with a resource allocation to a plurality of logical channels at the UE, an indication of a threshold time value associated with the resource allocation to the plurality of logical channels, the plurality of logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel;receive an indication of an uplink grant for the UE; andtransmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to transmitting one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets transmitted prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.2.The apparatus of claim 1, wherein the processing system is further configured to cause the UE to transmit, via a second set of resources associated with the uplink grant, the one or more second packets of the second set of buffered packets associated with the second logical channel after transmitting the one or more first packets of the first set of buffered packets associated with the first logical channel.3.The apparatus of claim 2, wherein transmitting the one or more second packets of the second set of buffered packets via the second set of resources is in association with a remainder of the first set of buffered packets excluding the one or more first packets having one or more latency headroom values that satisfy the threshold time value.4.The apparatus of claim 1, wherein the processing system is further configured to cause the UE to:transmit, via a second set of resources associated with the uplink grant, one or more third packets of a third set of buffered packets associated with a third logical channel prior to transmitting the one or more second packets the second set of buffered packets associated with the second logical channel in accordance with a second latency headroom value associated with the one or more third packets failing to satisfy the threshold time value, the plurality of logical channels further including the third logical channel.5.The apparatus of claim 4, wherein the one or more first packets of the first set of buffered packets associated with the first logical channel are transmitted prior to the one or more third packets of the third set of buffered packets associated with the third logical channel in accordance with a dynamic prioritization between logical channels associated with buffered packets having latency headroom values that fail to satisfy the threshold time value.6.The apparatus of claim 5, wherein the dynamic prioritization indicates that the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value are prioritized in an increasing order of latency headroom value.7.The apparatus of claim 6, wherein in accordance with the dynamic prioritization, a logical channel associated with a buffered packet having a relatively smallest latency headroom value, of the logical channels associated with the buffered packets having the latency headroom values that fail to satisfy the threshold time value, has a relatively highest dynamic priority.8.The apparatus of claim 6, wherein the dynamic prioritization further indicates that, for two or more logical channels having a same latency headroom value, the two or more logical channels are prioritized in an increasing order of packet delay budget value.9.The apparatus of claim 8, wherein the dynamic prioritization further indicates that, in accordance with the two or more logical channels having the same latency headroom value and a same packet delay budget value, the two or more logical channels are prioritized in accordance with a respective baseline priority associated with each of the two or more logical channels.10.The apparatus of claim 1, wherein the processing system is further configured to cause the UE to receive information indicative of an activation associated with a resource allocation scheme for the resource allocation to the plurality of logical channels.11.The apparatus of claim 10, wherein the resource allocation scheme enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.12.The apparatus of claim 1, wherein the processing system is further configured to cause the UE to receive information indicative of a criteria associated with an autonomous selection, at the UE, associated with a resource allocation scheme for the resource allocation to the plurality of logical channels.13.The apparatus of claim 12, wherein the criteria comprises the threshold time value, and wherein a first resource allocation scheme that enables transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel is autonomously selected in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.14.The apparatus of claim 1, wherein the processing system is further configured to cause the UE to:transmit information indicative of a capability associated with the UE associated with a resource allocation scheme for the resource allocation to the plurality of logical channels, the resource allocation scheme enabling transmission of a first buffered packet associated with a relatively lower priority logical channel prior to transmission of a second buffered packet associated with a relatively higher priority logical channel in accordance with the first buffered packet being associated with a latency headroom value that fails to satisfy the threshold time value.15.The apparatus of claim 1, wherein each logical channel of the plurality of logical channels is associated with a respective latency-sensitive traffic flow, and wherein each latency-sensitive traffic flow is associated with a respective packet delay budget.16.An apparatus for wireless communication at a user equipment (UE) , comprising:a processing system that includes processor circuitry and memory circuitry that stores code, the processing system configured to cause the UE to:receive, via information associated with a resource allocation to a plurality of logical channels at the UE, an indication of at least a first upper limit value associated with at least a first bucket size for a first logical channel of the plurality of logical channels, the plurality of logical channels including the first logical channel and a second logical channel, and the first logical channel having a first priority that is higher than a second priority associated with the second logical channel;receive an indication of an uplink grant for the UE;transmit, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel, the one or more first packets meeting the first bucket size in accordance with the first upper limit value; andtransmit, via a second set of resources associated with the uplink grant and after transmitting the one or more first packets, one or more second packets of a second set of buffered packets associated with the second logical channel.17.The apparatus of claim 16, wherein the processing system is further configured to cause the UE to:receive an indication of a second upper limit value associated with a second bucket size for the second logical channel, the one or more second packets meeting the second bucket size in accordance with the second upper limit value, the first upper limit value being a first constraint on the first bucket size and the second upper limit value being a second constraint on the second bucket size.18.The apparatus of claim 16, wherein the processing system is further configured to cause the UE to:receive the indication of the first upper limit value as a first bucket size duration associated with the first bucket size in accordance with a rule defining that a bucket size duration associated with a logical channel having a relatively highest priority is constrained to a subset of relatively smallest bucket size durations of a set of available bucket size durations, the first bucket size equal to a product of a first prioritized bit rate associated with the first logical channel and the first bucket size duration.19.The apparatus of claim 18, wherein the processing system is further configured to cause the UE to:receive an indication of a second upper limit value associated with a second bucket size for the second logical channel as a second bucket size duration associated with the second bucket size, the second bucket size equal to a second product of a second prioritized bit rate for the second logical channel and the second bucket size duration.20.An apparatus for wireless communication at a network entity, comprising:a processing system that includes processor circuitry and memory circuitry that stores code, the processing system configured to cause the network entity to:output, via information associated with a resource allocation to a plurality of logical channels at a user equipment (UE) , an indication of a threshold time value associated with the resource allocation to the plurality of logical channels, the plurality of logical channels including a first logical channel and a second logical channel, and the first logical channel having a first priority that is lower than a second priority associated with the second logical channel;output an indication of an uplink grant for the UE; andobtain, via a first set of resources associated with the uplink grant, one or more first packets of a first set of buffered packets associated with the first logical channel prior to obtaining one or more second packets of a second set of buffered packets associated with the second logical channel, the one or more first packets obtained prior to the one or more second packets in accordance with a first latency headroom value associated with the one or more first packets failing to satisfy the threshold time value.
Citation Information
Patent Citations
Logic channel priority processing method and device, electronic equipment and storage medium
CN115843442A
Quality of service features associated with supporting verticals in wireless systems
US20230189055A1
Logical channel prioritization for data
US20240023155A1
Apparatus and method for logical channel prioritization
WO2023209542A1
Logical channel prioritization for latency-sensitive traffic communications
WO2024009254A1