Transmission duration indication
The use of a transmission duration indicator in the control portion of the PHY TB, combined with a condensed postamble, addresses resource inefficiencies and missed indications in A-IoT devices by precisely determining packet length and ending monitoring.
Patent Information
- Application Number
- PCT/CN2024/085427
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-10-09
AI Technical Summary
Existing methods for indicating packet length in ambient internet-of-things (A-IoT) devices consume excessive resources and may result in missed postamble indications, leading to inefficient resource utilization and prolonged channel monitoring.
Implementing a transmission duration indicator (TDI) in the control portion of the physical layer (PHY) transport block (TB) that identifies a range including the packet length, accompanied by a condensed postamble portion to flag the end of the packet, thereby minimizing resource consumption and avoiding missed indications.
The proposed method conserves resources and accurately identifies the end of the packet, reducing unnecessary channel monitoring and improving efficiency in A-IoT devices.
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Figure CN2024085427_09102025_PF_FP_ABST
Abstract
Description
TRANSMISSION DURATION INDICATION
[0001] INTRODUCTION
[0002] The following relates to wireless communication, including transmission duration indication. Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0003] The described techniques relate to improved methods, systems, devices, and apparatuses that support transmission duration indication. For example, the described techniques provide for improved packet length indication and determination features for an ambient internet-of-things (A-IoT) device. For example, an A-IoT device may receive or otherwise obtain a control portion of a physical layer (PHY) transport block (TB) via a forward link (FL) . The PHY TB may have a packet length. The control portion of the PHY TB may include a transmission duration indicator (TDI) that identifies a range which includes the packet length for the PHY TB. The A-IoT device may receive or otherwise obtain, via the FL and within the range of the packet length, a postamble portion of the PHY TB. The postamble portion of the PHY TB may include a sequence that identifies an end of the PHY TB. Accordingly, the condensed TDI may identify a range of packet lengths that the target A-IoT device monitors for the PHY TB and the condensed postamble portion flags the end of the packet. This approach may avoid missed postamble indications while conserving resources and minimizing packet length.
[0004] A method by a first network entity is described. The method may include obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0005] A first network entity is described. The first network entity may include a processing system configured to obtain a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and obtain, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0006] Another first network entity is described. The first network entity may include means for obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and means for obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0007] A non-transitory computer-readable medium having code for wireless communications stored thereon that, when executed by a first network entity, causes the first network entity to obtain a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and obtain, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0008] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for obtaining a packet length table associated with PHY TB transmissions, where the TDI identifies the range in the packet length table.
[0009] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that the PHY TB may be addressed to the first network entity based on the control portion and monitoring for the PHY TB for an entirety of the range according to the TDI based on the PHY TB being addressed to the first network entity.
[0010] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for obtaining a set of packet length tables associated with PHY TB transmissions, where the TDI identifies the range in a packet length table, and where the control portion indicates an index to the packet length table in the set of packet length tables.
[0011] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, a first table in the set of packet length tables may be associated with a first range granularity that may be a different granularity than a second range granularity associated with a second table in the set of packet length tables.
[0012] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the TDI may be associated with at least one of a time domain range or a code domain range and the time domain range may include one or multiple slots.
[0013] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, a granularity associated with the TDI includes at least one of one or more chips, one or more symbols, or one or more slots.
[0014] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the TDI may be based on a delimiter or preamble duration granularity.
[0015] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, a start of the range indicated in the TDI may be associated with at least one of a data start location within the PHY TB or the control portion or a start of the control portion.
[0016] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the TDI may be associated with a preamble sequence or a delimiter sequence.
[0017] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for obtaining a midamble portion of the PHY TB that may be prior in a time domain relative to the postamble portion.
[0018] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the midamble portion includes a midamble sequence for detecting the postamble portion and a postamble timer may be established for detecting the sequence in the postamble portion.
[0019] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the TDI identifies a sequence length associated with the postamble portion or a midamble portion of the PHY TB that may be prior in a time domain relative to the postamble portion.
[0020] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the TDI may be based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the PHY TB.
[0021] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0022] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for estimating the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0023] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining the end of the PHY TB based on an associated timer.
[0024] Some examples of the method, first network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB.
[0025] In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the sequence includes a repeating set of symbol chips.
[0026] A method by a second network entity is described. The method may include outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0027] A second network entity is described. The second network entity may include a processing system configured to output, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and output, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0028] Another second network entity is described. The second network entity may include means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0029] A non-transitory computer-readable medium having code for wireless communication stored thereon that, when executed by a second network entity, causes the second network entity to output, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB and output, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0030] Some examples of the method, second network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting, to the first network entity, a packet length table associated with PHY TB transmissions, where the TDI identifies the range in the packet length table.
[0031] Some examples of the method, second network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting, to the first network entity, a set of packet length tables associated with PHY TB transmissions, where the TDI identifies the range in a packet length table, and where the control portion indicates an index to the packet length table in the set of packet length tables.
[0032] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, a first table in the set of packet length tables may be associated with a first range granularity that may be a different granularity than a second range granularity associated with a second table in the set of packet length tables.
[0033] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, the TDI may be associated with at least one of a time domain range or a code domain range and the time domain range may include one or multiple slots.
[0034] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, a granularity associated with the TDI includes at least one of one or more chips, one or more symbols, or one or more slots.
[0035] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, the TDI may be based on a delimiter or preamble duration granularity.
[0036] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, a start of the range indicated in the TDI may be associated with at least one of a data start location within the PHY TB or the control portion or a start of the control portion.
[0037] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, the TDI may be associated with a preamble sequence or a delimiter sequence.
[0038] Some examples of the method, second network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting, to the first network entity, a midamble portion of the PHY TB that may be prior in a time domain relative to the postamble portion.
[0039] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, the midamble portion includes a midamble sequence for detecting the postamble portion and a postamble timer may be established for detecting the sequence in the postamble portion.
[0040] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, the TDI identifies a sequence length associated with the postamble portion or a midamble portion of the PHY TB that may be prior in a time domain relative to the postamble portion.
[0041] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, the TDI may be based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the PHY TB.
[0042] Some examples of the method, second network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for indicating a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0043] Some examples of the method, second network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for indicating the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0044] Some examples of the method, second network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for indicating the end of the PHY TB based on an associated timer.
[0045] Some examples of the method, second network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for indicating the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB.
[0046] In some examples of the method, second network entities, and non-transitory computer-readable medium described herein, the sequence includes a repeating set of symbol chips.BRIEF DESCRIPTION OF THE DRAWINGS
[0047] FIG. 1 shows an example of a wireless communications system that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0048] FIG. 2 shows an example of a wireless communication system that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0049] FIG. 3 shows an example of a physical layer (PHY) transport block (TB) that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0050] FIG. 4 shows an example of a PHY TB that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0051] FIG. 5 shows an example of a PHY TB that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0052] FIGs. 6 and 7 show block diagrams of devices that support transmission duration indication in accordance with one or more aspects of the present disclosure.
[0053] FIG. 8 shows a block diagram of a communications manager that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0054] FIG. 9 shows a diagram of a system including a device that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0055] FIGs. 10 and 11 show block diagrams of devices that support transmission duration indication in accordance with one or more aspects of the present disclosure.
[0056] FIG. 12 shows a block diagram of a communications manager that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0057] FIG. 13 shows a diagram of a system including a device that supports transmission duration indication in accordance with one or more aspects of the present disclosure.
[0058] FIGs. 14 through 18 show flowcharts illustrating methods that support transmission duration indication in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0059] Ambient internet-of-things (A-IoT) devices may provide various mechanisms to indicate a packet length for a physical layer (PHY) transport block (TB) . One approach may include a transmission duration indicator (TDI) in a control portion of the PHY TB that includes a large number of bits set to values to indicate the packet length. However, this approach consumes a large amount of resources to communicate the large number of bits, which further increases the packet length. Another approach may include a postamble on the end of the PHY TB that includes a sequence that identifies the end of the PHY TB. However, this approach also uses a large amount of bits to identify the end of the packet. Moreover, this approach may result in the A-IoT device continuing the monitor the channel when the postamble is missed.
[0060] Accordingly, the described techniques provide for improved packet length indication and determination features for an A-IoT device. For example, an A-IoT device may receive or otherwise obtain a control portion of a PHY TB via a forward link (FL) . The PHY TB may have a packet length. The control portion of the PHY TB may include a TDI that identifies a range which includes the packet length for the PHY TB. The A-IoT device may receive or otherwise obtain, via the FL and within the range of the packet length, a postamble portion of the PHY TB. The postamble portion of the PHY TB may include a sequence that identifies an end of the PHY TB. Accordingly, the condensed TDI may identify a range of packet lengths that the target A-IoT device monitors for the PHY TB and the condensed postamble portion flags the end of the packet. This approach may avoid missed postamble indications while conserving resources and minimizing packet length.
[0061] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to transmission duration indication.
[0062] FIG. 1 shows an example of a wireless communication system 100 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The wireless communication system 100 may include one or more devices, such as one or more network devices (e.g., network entities 105) , one or more UEs 115, and a core network 130. In some aspects, the wireless communication 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.
[0063] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication 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 aspects, network entities 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., 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) .
[0064] As described herein, a network entity (which may alternatively be referred to as an entity, a node, a network node, or a wireless entity) may be, be similar to, include, or be included in (e.g., be a component of) a base station (e.g., any base station described herein, including a disaggregated base station) , a UE (e.g., any UE described herein) , a reduced capability (RedCap) device, an enhanced reduced capability (eRedCap) device, an ambient internet-of-things (IoT) device, an energy harvesting (EH) -capable device, a network controller, an apparatus, a device, a computing system, an integrated access and backhauling (IAB) node, a distributed unit (DU) , a central unit (CU) , a remote / radio unit (RU) (which may also be referred to as a remote radio unit (RRU) ) , and / or another processing entity configured to perform any of the techniques described herein. For example, a network entity may be a UE. As another example, a network entity may be a base station. As used herein, “network entity” may refer to an entity that is configured to operate in a network, such as the network entity 105. For example, a “network entity” is not limited to an entity that is currently located in and / or currently operating in the network. Rather, a network entity may be any entity that is capable of communicating and / or operating in the network.
[0065] The adjectives “first, ” “second, ” “third, ” and so on are used for contextual distinction between two or more of the modified noun in connection with a discussion and are not meant to be absolute modifiers that apply only to a certain respective entity throughout the entire document. For example, a network entity may be referred to as a “first network entity” in connection with one discussion and may be referred to as a “second network entity” in connection with another discussion, or vice versa. As an example, a first network entity may be configured to communicate with a second network entity or a third network entity. In one aspect of this example, the first network entity may be a UE, the second network entity may be a base station, and the third network entity may be a UE. In another aspect of this example, the first network entity may be a UE, the second network entity may be a base station, and the third network entity may be a base station. In yet other aspects of this example, the first, second, and third network entities may be different relative to these examples.
[0066] Similarly, reference to a UE, base station, apparatus, device, computing system, or the like may include disclosure of the UE, base station, apparatus, device, computing system, or the like being a network entity. For example, disclosure that a UE is configured to receive information from a base station also discloses that a first network entity is configured to receive information from a second network entity. Consistent with this disclosure, once a specific example is broadened in accordance with this disclosure (e.g., a UE is configured to receive information from a base station also discloses that a first network entity is configured to receive information from a second network entity) , the broader example of the narrower example may be interpreted in the reverse, but in a broad open-ended way. In the example above where a UE is configured to receive information from a base station also discloses that a first network entity is configured to receive information from a second network entity, the first network entity may refer to a first UE, a first base station, a first apparatus, a first device, a first computing system, a first set of one or more one or more components, a first processing entity, or the like configured to receive the information; and the second network entity may refer to a second UE, a second base station, a second apparatus, a second device, a second computing system, a second set of one or more components, a second processing entity, or the like.
[0067] As described herein, communication of information (e.g., any information, signal, or the like) may be described in various aspects using different terminology. Disclosure of one communication term includes disclosure of other communication terms. For example, a first network entity may be described as being configured to transmit information to a second network entity. In this example and consistent with this disclosure, disclosure that the first network entity is configured to transmit information to the second network entity includes disclosure that the first network entity is configured to provide, send, output, communicate, or transmit information to the second network entity. Similarly, in this example and consistent with this disclosure, disclosure that the first network entity is configured to transmit information to the second network entity includes disclosure that the second network entity is configured to receive, obtain, or decode the information that is provided, sent, output, communicated, or transmitted by the first network entity.
[0068] As shown, the network entity (e.g., network entity 105) may include a processing system 106. Similarly, the network entity (e.g., UE 115) may include a processing system 112. A processing system may include one or more components (or subcomponents) , such as one or more components described herein. For example, a respective component of the one or more components may be, be similar to, include, or be included in at least one memory, at least one communication interface, or at least one processor. For example, a processing system may include one or more components. In such an example, the one or more components may include a first component, a second component, and a third component. In this example, the first component may be coupled to a second component and a third component. In this example, the first component may be at least one processor, the second component may be a communication interface, and the third component may be at least one memory. A processing system may generally be a system one or more components that may perform one or more functions, such as any function or combination of functions described herein. For example, one or more components may receive input information (e.g., any information that is an input, such as a signal, any digital information, or any other information) , one or more components may process the input information to generate output information (e.g., any information that is an output, such as a signal or any other information) , one or more components may perform any function as described herein, or any combination thereof. As described herein, an “input” and “input information” may be used interchangeably. Similarly, as described herein, an “output” and “output information” may be used interchangeably. Any information generated by any component may be provided to one or more other systems or components of, for example, a network entity described herein) . For example, a processing system may include a first component configured to receive or obtain information, a second component configured to process the information to generate output information, and / or a third component configured to provide the output information to other systems or components. In this example, the first component may be a communication interface (e.g., a first communication interface) , the second component may be at least one processor (e.g., that is coupled to the communication interface and / or at least one memory) , and the third component may be a communication interface (e.g., the first communication interface or a second communication interface) . For example, a processing system may include at least one memory, at least one communication interface, and / or at least one processor, where the at least one processor may, for example, be coupled to the at least one memory and the at least one communication interface.
[0069] A processing system of a network entity described herein may interface with one or more other components of the network entity, may process information received from one or more other components (such as input information) , or may output information to one or more other components. For example, a processing system may include a first component configured to interface with one or more other components of the network entity to receive or obtain information, a second component configured to process the information to generate one or more outputs, and / or a third component configured to output the one or more outputs to one or more other components. In this example, the first component may be a communication interface (e.g., a first communication interface) , the second component may be at least one processor (e.g., that is coupled to the communication interface and / or at least one memory) , and the third component may be a communication interface (e.g., the first communication interface or a second communication interface) . For example, a chip or modem of the network entity may include a processing system. The processing system may include a first communication interface to receive or obtain information, and a second communication interface to output, transmit, or provide information. In some aspects, the first communication interface may be an interface configured to receive input information, and the information may be provided to the processing system. In some aspects, the second system interface may be configured to transmit information output from the chip or modem. The second communication interface may also obtain or receive input information, and the first communication interface may also output, transmit, or provide information.
[0070] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communication system 100 (e.g., other wireless communication devices, including UEs 115 or network entities 105) , as shown in FIG. 1.
[0071] As described herein, a node of the wireless communication system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., 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.
[0072] In some aspects, network entities 105 may communicate with a core network 130 or with one another. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some aspects, network entities 105 may communicate with one another via backhaul communication link (s) 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via the core network 130) . In some aspects, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., 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 (e.g., an electrical link, an optical fiber link) or one or more wireless links (e.g., 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.
[0073] 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 (e.g., 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 aspects, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within one network entity (e.g., a network entity 105 or a single RAN node, such as a base station 140) .
[0074] In some aspects, a network entity 105 may be implemented in a disaggregated architecture (e.g., 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 (e.g., network entities 105) , such as an integrated access and backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., 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 (e.g., 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 may also 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 (e.g., separate physical locations) . In some aspects, one or more of the network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0075] 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 (e.g., 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 aspects, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (e.g., one or more CUs) may be connected to a DU 165 (e.g., one or more DUs) or an RU 170 (e.g., one or more RUs) , or some combination thereof, and the DUs 165, or RUs 170, may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., 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 (e.g., via one or multiple different RUs, such as an RU 170) . In some cases, 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 (e.g., 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 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some aspects, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities (e.g., one or more of the network entities 105) that are in communication via such communication links.
[0076] In some wireless communications systems (e.g., the wireless communication 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 (e.g., to a core network 130) . In some cases, in an IAB network, one or more of the network entities 105 (e.g., 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 (e.g., IAB donors) may be in communication with one or more additional devices (e.g., IAB node (s) 104) via supported access and backhaul links (e.g., backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by one or more DUs (e.g., 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 (e.g., of an RU 170) of IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some aspects, the IAB node (s) 104 may include one or more DUs (e.g., DUs 165) that support communication links with additional entities (e.g., IAB node (s) 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0077] For instance, an access network (AN) or RAN may include communications between access nodes (e.g., an IAB donor) , IAB node (s) 104, and one or more UEs 115. The IAB donor may facilitate connection between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130) . That is, an IAB donor may refer to a RAN node with a wired or wireless connection to the core network 130. The IAB donor may include one or more of a CU 160, a DU 165, and an RU 170, in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link) . The IAB donor and IAB node (s) 104 may communicate via an F1 interface according to a protocol that defines signaling messages (e.g., an F1 AP protocol) . Additionally, or alternatively, the CU 160 may communicate with the core network 130 via an interface, which may be an example of a portion of a backhaul link, and may communicate with other CUs (e.g., including a CU 160 associated with an alternative IAB donor) via an Xn-C interface, which may be an example of another portion of a backhaul link.
[0078] IAB node (s) 104 may refer to RAN nodes that provide IAB functionality (e.g., access for UEs 115, wireless self-backhauling capabilities) . A DU 165 may act as a distributed scheduling node towards child nodes associated with the IAB node (s) 104, and the IAB-MT may act as a scheduled node towards parent nodes associated with IAB node (s) 104. That is, an IAB donor may be referred to as a parent node in communication with one or more child nodes (e.g., an IAB donor may relay transmissions for UEs through other IAB node (s) 104) . Additionally, or alternatively, IAB node (s) 104 may also be referred to as parent nodes or child nodes to other IAB node (s) 104, depending on the relay chain or configuration of the AN. The IAB-MT entity of IAB node (s) 104 may provide a Uu interface for a child IAB node (e.g., the IAB node (s) 104) to receive signaling from a parent IAB node (e.g., the IAB node (s) 104) , and a DU interface (e.g., a DU 165) may provide a Uu interface for a parent IAB node to signal to a child IAB node or UE 115.
[0079] For example, IAB node (s) 104 may be referred to as parent nodes that support communications for child IAB nodes or may be referred to as child IAB nodes associated with IAB donors. An IAB donor may include a CU 160 with a wired or wireless connection (e.g., backhaul communication link (s) 120) to the core network 130 and may act as a parent node to IAB node (s) 104. For example, the DU 165 of an IAB donor may relay transmissions to UEs 115 through IAB node (s) 104, or may directly signal transmissions to a UE 115. The CU 160 of the IAB donor may signal communication link establishment via an F1 interface to IAB node (s) 104, and the IAB node (s) 104 may schedule transmissions (e.g., transmissions to the UEs 115 relayed from the IAB donor) through one or more DUs (e.g., DUs 165) . That is, data may be relayed to and from IAB node (s) 104 via signaling via an NR Uu interface to MT of IAB node (s) 104 (e.g., other IAB node (s) ) . Communications with IAB node (s) 104 may be scheduled by a DU 165 of the IAB donor or of IAB node (s) 104.
[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 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., 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” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also 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 aspects, 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 FIG. 1.
[0083] The UEs 115 and the network entities 105 may wirelessly communicate with one another via the communication link (s) 125 (e.g., 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 (e.g., a bandwidth part (BWP) ) that is operated according to one or more PHY layer channels for a given RAT (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each PHY layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communication 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 (e.g., 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 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities, such as one or more of the network entities 105) .
[0084] In some aspects, such as in a carrier aggregation configuration, a carrier may have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute RF channel number (EARFCN) ) and may be identified according to a channel raster for discovery by the UEs 115. A carrier may be operated in a standalone mode, in which case initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode, in which case a connection is anchored using a different carrier (e.g., of the same or a different RAT) .
[0085] The communication link (s) 125 of the wireless communication system 100 may include downlink transmissions (e.g., forward link transmissions) from a network entity 105 to a UE 115, uplink transmissions (e.g., return link transmissions) from a UE 115 to a network entity 105, among other configurations of transmissions. Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
[0086] A carrier may be associated with a particular bandwidth of the RF spectrum and, in some aspects, the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths for carriers of a particular RAT (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) . Devices of the wireless communication system 100 (e.g., the network entities 105, or the UEs 115) may have hardware configurations that support communications using a particular carrier bandwidth or may be configurable to support communications using one of a set of carrier bandwidths. In some aspects, the wireless communication system 100 may include network entities 105 or UEs 115 that support concurrent communications using carriers associated with multiple carrier bandwidths. In some aspects, each served UE 115 may be configured for operating using portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
[0087] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., 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 (e.g., 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 (e.g., the order of the modulation scheme, or the coding rate of the modulation scheme) , such that a relatively higher quantity of resource elements (e.g., 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 (e.g., 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.
[0088] One or more numerologies for a carrier may be supported, and a numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some aspects, a UE 115 may be configured with multiple BWPs. In some aspects, a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
[0089] 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 (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0090] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some aspects, a frame may be divided (e.g., 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 (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems, such as the wireless communication 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 (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0091] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI) . In some aspects, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0092] 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 (e.g., 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 (e.g., 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 (e.g., 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 (e.g., one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (e.g., a specific UE) .
[0093] A network entity 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof. The term “cell” may refer to a logical communication entity used for communication with a network entity 105 (e.g., using a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) ) . In some aspects, a cell also may refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) over which the logical communication entity operates. Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the network entity 105. For example, a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with coverage areas 110, among other examples.
[0094] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a network entity 105 operating with lower power (e.g., a base station 140 operating with lower power) relative to a macro cell, and a small cell may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) . A network entity 105 may support one or more cells and may also support communications via the one or more cells using one or multiple component carriers.
[0095] In some aspects, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.
[0096] In some aspects, a network entity 105 (e.g., 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 aspects, coverage areas 110 (e.g., different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (e.g., different coverage areas) may be supported by the same network entity (e.g., 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 (e.g., the network entities 105) . The wireless communication system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0097] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, network entities 105 (e.g., base stations 140) may have similar frame timings, and transmissions from different network entities (e.g., different ones of the network entities 105) may be approximately aligned in time. For asynchronous operation, network entities 105 may have different frame timings, and transmissions from different network entities (e.g., different ones of network entities 105) may, in some aspects, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operations.
[0098] Some UEs 115, such as MTC or IoT devices, may be relatively low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) . M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a network entity 105 (e.g., a base station 140) without human intervention. In some aspects, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that uses the information or presents the information to humans interacting with the application program. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.
[0099] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception concurrently) . In some aspects, half-duplex communications may be performed at a reduced peak rate. Other power conservation techniques for the UEs 115 may include entering a power saving deep sleep mode when not engaging in active communications, operating using a limited bandwidth (e.g., according to narrowband communications) , or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
[0100] The wireless communication system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communication 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.
[0101] In some aspects, a UE 115 may be configured to support communicating directly with other UEs (e.g., one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a D2D communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some aspects, 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 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some aspects, 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 aspects, 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 aspects, 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.
[0102] In some systems, a D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) . In some aspects, vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system. In some aspects, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., network entities 105, base stations 140, RUs 170) using vehicle-to-network (V2N) communications, or with both.
[0103] 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 (e.g., 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 (e.g., 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 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through 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.
[0104] The wireless communication 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 (e.g., 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.
[0105] The wireless communication system 100 may also operate using a super high frequency (SHF) region, which may be in the range of 3 GHz to 30 GHz, also known as the centimeter band, or using an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) , also known as the millimeter band. In some aspects, the wireless communication system 100 may support millimeter wave (mmW) communications between the UEs 115 and the network entities 105 (e.g., base stations 140, RUs 170) , and EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some aspects, such techniques may facilitate using antenna arrays within a device. The propagation of EHF transmissions, however, may be subject to even greater attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.
[0106] The wireless communication system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communication 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 aspects, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0107] A network entity 105 (e.g., 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 aspects, 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.
[0108] The network entities 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords) . Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) , for which multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) , for which multiple spatial layers are transmitted to multiple devices.
[0109] Beamforming, which may also 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 (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming 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, or phase offsets 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 (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0110] A network entity 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a network entity 105 (e.g., a base station 140, an RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a network entity 105 multiple times along different directions. For example, the network entity 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network entity 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network entity 105.
[0111] Some signals, such as data signals associated with a particular receiving device, may be transmitted by a transmitting device (e.g., a network entity 105 or a UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as another network entity 105 or UE 115) . In some aspects, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
[0112] In some aspects, transmissions by a device (e.g., by a network entity 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network entity 105 to a UE 115) . The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands. The network entity 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170) , a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
[0113] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a transmitting device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some aspects, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) . The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
[0114] The wireless communication 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, or error correction techniques, 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.
[0115] The UEs 115 and the network entities 105 may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly via a communication link (e.g., the communication link (s) 125, a D2D communication link 135) . HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) . HARQ may improve throughput at the MAC layer in relatively poor radio conditions (e.g., low signal-to-noise conditions) . In some aspects, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
[0116] A first network entity (e.g., an A-IoT, which may be an example of a UE 115) may obtain a control portion of a PHY TB via a FL, wherein the PHY TB has a packet length, and wherein the control portion of the PHY TB comprises a TDI that identifies a range which includes the packet length for the PHY TB. The control portion may be within or outside of the PDSCH. The first network entity may obtain, via the FL and within the range of the packet length, a postamble portion of the PHY TB, wherein the postamble portion of the PHY TB comprises a sequence that identifies an end of the PHY TB.
[0117] A second network device (e.g., which may be an example of a UE 115 or a network entity 105 that are associated with an A-IoT) may output, to a first network entity, a control portion of a PHY TB via a FL, wherein the PHY TB has a packet length, and wherein the control portion of the PHY TB comprises a TDI that identifies a range which includes the packet length for the PHY TB. The second network entity may output, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, wherein the postamble portion of the PHY TB comprises a sequence that identifies an end of the PHY TB.
[0118] FIG. 2 shows an example of a wireless communication system 200 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. Wireless communication system 200 may implement aspects of wireless communication system 100. Wireless communication system 200 may include a first network entity 205 and a second network entity 210, which may be examples of the corresponding devices described herein. For example, the first network entity 205 may be an example of an A-IoT device, such as a UE. The second network entity 210 may be an example of a reader associated with the A-IoT device, which may be an example of a UE or a network entity.
[0119] Wireless communication system 200 may support low-cost and low-complexity passive, semi-passive, or active devices, such as the A-IoT device. These devices may be affixed to individual items (e.g., boxes, crates, containers, worn on a user, or other scenarios) that are used to collect and send small amounts of data. For example, the devices may be attached to a sensor and provide sensor data, may be attached to an individual device and used for tracking and inventory purposes, or provide other basic functionality. These devices may, therefore, be generally associated with heavy uplink traffic.
[0120] A passive device may generally refer to a device that uses backscatter communications on a backwards link (BL) . The backscatter communications may include the device harvesting the energy of a wireless signal (e.g., a continuous wave (CW) signal) via a FL and reflecting or refracting the wireless signal back to the source (e.g., the reader) after encoding the small amount of data onto the reflected or refracted signal. The passive device may also be referred to as a passive radio frequency identifier (RFID) tag or as a Type A device. The passive device may have little or no energy storing capability. The passive device may have no amplification capability (e.g., may solely rely on the energy harvested from the FL signal) . Accordingly, the operating range of the passive device may be relatively short (e.g., 10-30 meters) .
[0121] Semi-passive devices may also rely on backscatter communications for the BL and may have little or no amplification. For example, the semi-passive device may have a small amount of energy storage that captures and stores energy from wireless signal (s) . The semi-passive device may use some or all of its stored energy to provide a relatively small amount of amplification to the BL signal. This may extend the operating range of the semi-passive device a small amount (e.g., up to 60 meters) . Semi-passive devices may also have a more complex operational capability relative to the passive device, which may provide additional functionality. The semi-passive device may also be referred to as a semi-passive RFID tag or as a Type B device.
[0122] An active device may rely on backscatter communications for the BL or may have a transmit chain that is capable of generating and transmitting a wireless signal via the BL. For example, the active device may have a medium amount of energy storage capability (e.g., a small battery) that can be used to power the transmit chain. This may further extend the operational range of the active device (e.g., up to 300 meters) and may enable a higher degree of complexity relative to the semi-passive devices. The active device may also be referred to as an active RFID tag, as a Bluetooth device, or as a Type C device. The A-IoT device may be an example of any of the passive devices, semi-passive devices, or active devices.
[0123] Wireless communications with these devices may include a reader transmitting a signal via the FL and the device responding with a signal via the BL (e.g., a backscattered signal or a generated signal) . The reader in this context may refer to the second network entity 210, which may be an example of a UE or a network entity. For example, in some scenarios the reader may refer to the network entity that communicates directly with the A-IoT device via the FL and the BL. In other scenarios the reader may refer to the UE that communicates with the network entity via a cellular link (e.g., via a Uu interface) and then communicates with the A-IoT device via the FL and BL. The network entity may control or otherwise manage the communications between the UE and the A-IoT device. In this scenario, the UE may act as a relay device or an assisting node between the A-IoT device and the network entity.
[0124] In other scenarios, the reader may simply refer to the UE that acts as a stand-alone reader. For example, the UE may be a device that controls or otherwise autonomously manages the FL and BL communications with the A-IoT device. The UE may communicate information associated with the A-IoT device to a central function (e.g., a network controller or function) via the network entity. For example, the UE may include function (s) or application (s) that manage the FL and BL communications with the A-IoT device and then provides some or all of the tag information (or other information based on the tag information) to the central function. In other scenarios, the communications via the BL and the FL may be simply between the UE and the A-IoT device without involving the network entity or other central function (e.g., such as an autonomous reader / tag configuration) .
[0125] In the FL, the reader may transmit or otherwise output a PHY TB to the A-IoT device. The PHY TB may begin with a delimiter (e.g., an OFF period where no signal is transmitted) having a certain duration that denotes the start of frame (SOF) ) . The A-IoT device may detect the delimiter and, therefore, know that the PHY TB is being received. Generally, the PHY TB may include a preamble portion 215, a control portion 220, and a data portion 225. Accordingly, the A-IoT device may begin monitoring the wireless channel to receive or otherwise obtain the PHY TB. However, it is important for the A-IoT device to be able to detect the end of the PHY TB in order to stop monitoring the wireless channel. For example, without knowing or otherwise determining the end of the PHY TB the A-IoT device will expend resources monitoring the wireless channel even after the PHY TB transmission has ended.
[0126] Two methods have been identified to denote the end of the PHY TB. One method relates to a transmission block size approach and the other method relates to a postamble approach. The postamble-based method is generally different from traditional RFID technologies. This may be due to a long CW on (e.g., between FL and BL, such as the T1 timing parameter) implicitly implying the end of the FL packet. This may also be due to the RFID tag being able to decode the FL packet size first and then performing CRC (e.g., rather than performing CRC first) . However, each of these two approaches suffer from various drawbacks or shortcomings.
[0127] For example, in the transmission block size approach (e.g., the length of the PHY TB via the FL) , the amount of resources used to indicate the transmission block size is relatively large. As one non-limiting example, this approach may use ten bits (e.g., 20 chips, which each chip corresponding to an ON period of the CW signal) being used to denote 1, 000 bits of the transmission block size. While this approach may be helpful to support early dropping (e.g., the early drop is where a non-target A-IoT device stops monitoring the channel since the PHY TB is not addressed to it, which may be important for semi-passive or active tags to realize power savings) , such overhead in signaling is extensive and consumes considerable resources to communicate the transmission block size indication.
[0128] The postamble-based approach may use less resources (e.g., four chips or eight chips) to denote the end of the PHY TB. This technique may not support early dropping. That is, a non-target A-IoT device may continuously decode the PHY packet until the postamble is detected. Moreover, false acquisition in the data (e.g., A-IoT PDSCH) may cause false early termination. Moreover, misdetection of the postamble may cause the tag to continuously monitor the channel since the end of the PHY TB has been missed.
[0129] Accordingly, aspects of the described techniques provide for a short TDI and a short postamble approach to denote the end of the PHY TB. The TDI may indicate the PHY packet end with a large granularity and the postamble portion 230 can indicate the end of the PHY packet (e.g., the PHY TB) with a smaller granularity. For example, the granularity of the postamble indication (e.g., the sequence that identifies the end of the PHY TB) carried in the postamble portion 230 may be or include a chip (e.g., ON / OFF after line coding) . In some examples, the sequence may include adding a repeating set of symbol chips. For example, the sequence provided in the postamble portion 230 may include a series of fill bits or chips that signal the end of the PHY TB. This may include using “0” or “1” or using always ON or always OFF fill information in the postamble portion 230 of the PHY TB as the sequence that identifies the end of the PHY TB. In some examples, the set of repeating set of symbol chips may include a sufficient amount of symbol chips or bits that satisfy the range of the packet length. That is, the repeating set of symbol chips may be used to fill out the packet length such that the maximum end of the range of the packet length may be satisfied. This may enable filling the packet length to the indicated TDI duration.
[0130] In some aspects, a packet length table may be denoted or otherwise (pre) configured for the first network entity 205 that denotes the TDI and the corresponding PHY packet length. One non-limiting example of such a packet length table is shown in Table 1 below.
[0131] Table 1
[0132] In some aspects, the TDI may be indicated in the control portion 220 of the PHY TB and used to identify the range that includes the packet length for the PHY TB. For example, the first network entity 205 may receive or otherwise obtain the control portion 220 of the PHY TB via the FL with the PHY TB having a packet length. The first network entity 205 may use the TDI carried or otherwise conveyed in the control portion 220 of the PHY TB and the indicated table to determine the range of the packet length. That is, the range of the packet length may identify range of a number of chips, for example, that are being conveyed in the PHY TB (e.g., see Table 1) .
[0133] In some aspects, the size of the packet (e.g., the packet length) may be denoted in the time domain or in the code domain. For example, the unit of the size or code domain length may be denoted (e.g., in Table 1) in chip (s) , in A-IoT symbols (s) , or in NR OFDM symbol (s) / slot (s) / frame (s) . In some aspects, the size of the PHY TB (e.g., the PHY TB packet length) may be denoted with respect to the total size of the PHY TB (e.g., including the preamble portion 215, the control portion 220, the data portion 225, and the postamble portion 230) or may be denoted for the data portion 225 (e.g., A-IoT PDSCH) .
[0134] For example, the granularity of the TDI indication K (e.g., x10) may include K being an integer multiple of M, which may correspond to the number of chips in one OFDM symbol. The chips for TDI granularity may be a delimiter chip or a preamble chip (e.g., (pre) defined for the first network entity 205) rather than an A-IoT PDSCH chip (e.g., (pre) configured for the first network entity 205) . Table 1 illustrates a non-limiting example where M=2 and K=56 (e.g., two NR slots) based on Manchester coding techniques. For example, 224 chips may generally be used to indicate 112 bits.
[0135] Accordingly, the first network entity 205 may receive or otherwise obtain the packet length table associated with PHY TB transmissions. The TDI indicted in the control portion 220 may identify the range in the packet length. For example, if the TDI indicates “11” this may indicate that the packet length is between 168 and 224 chips (e.g., between 84 and 112 bits) . This may indicate to the first network entity 205 that the range that includes the packet length for the PHY TB is at least 168 chips but no more than 224 chips. This may also indicate that the postamble portion 230 is located somewhere within this range and, therefore, the first network entity 205 may receive or otherwise obtain the postamble portion 230 via the FL and within the range of the packet length. The postamble portion 230 may carry or otherwise convey a sequence (e.g., four chips or eight chips, which may correspond to two bits or four bits) that identifies the end of the PHY TB.
[0136] In some aspects, multiple packet length tables may be defined or otherwise associated with PHY TB transmissions. The different tables may be associated with different granularities. For example, Table 2 below shows an example of another packet length table that may be used in combination with the TDI indication carried in the control portion 220.
[0137] Table 2
[0138] In this non-limiting example, Table 2 may be associated with a larger granularity relative to Table 1 above. For example, Table 2 may be associated with an eight chip postamble. Thus, a set of packet length tables may be signaled to the first network entity 205, (pre) defined in the relevant specification, or otherwise (pre) configured for the first network entity 205 where the TDI may identify the range in one of the packet length tables. In some aspects the control portion 220 may carry or otherwise convey an index to the packet length table in the set of tables (e.g., which table is to be used with the indicated TDI) . Accordingly, a first table in the set of packet length tables may be associated with a first range granularity that is different from a second range granularity associated with a second table in the set of packet length tables.
[0139] As discussed above, in some aspects the TDI may be associated with a time domain range or a code domain range. The time domain range in this example may include one or more slots. That is, the range (e.g., size) may be denoted either in the time domain size (e.g., duration) or in the code domain size (e.g., length) . When denoted in the time domain range, this range may indicate a duration that is larger than one slot.
[0140] In some aspects, the granularity associated with the TDI may include one or more chips, one or more symbols, or one or more slots. That is, the granularity of the TDI may be at the chip level, at the x chips level, at the NR OFDM symbol level, at the x NR OFDM symbol level, at the NR slot level, or at the x NR slot level, where x is a positive integer of one or more.
[0141] In some aspects, the TDI may be based on a delimiter or a preamble duration granularity. For example, the TDI table may be based on a delimiter chip or on a preamble chip. However, in some aspects that may be no chop definitions that are based on the delimiter or preamble duration granularity.
[0142] In some aspects, a start of the range indicated in the TDI may be associated with at least one of a data state location within the PHY TB (e.g., at the beginning of the data portion 225) or the control portion (e.g., during some point within the control portion 220) or at a start of the control portion (e.g., at the beginning of the control portion 220) . That is, the TDI defined start point (e.g., where the beginning of the range of the packet is to be measured from) may be defined in the time domain, in the code domain, or in the bit domain. This start point may be at the start of the data portion 225 or include both the control portion 220 and the data portion 225 (e.g., in the same PHY channel, the TDI indicated before the control portion 220) .
[0143] In some aspects, the TDI may be associated with a preamble sequence or a delimiter sequence. For example, the TDI may be implicitly indicated based on the preamble sequence or based on the delimiter sequence. For example, the preamble or delimiter sequence may provide the indication of the TDI or the TDI may be determined based on the length of the preamble or delimiter sequence.
[0144] In some aspects, the TDI may not be indicated in the control portion 220 of the PHY TB. Accordingly, this may result in a missed detection of the end of the PHY TB (e.g., the first network entity 205 misses the postamble sequence indicating the end of the PHY TB) . In this aspect, the first network entity 205 may identify or otherwise determine the end of the PHY TB based on an associated timer. For example, the tag may assume a maximal packet length (e.g., in the bit domain or in the time domain) , which may be (pre) defined, (pre) configured (e.g., dynamically) , or otherwise identified for the first network entity 205. If the corresponding time or number of bits has passed but the tag still hasn’ t detected the end of the PHY TB, the first network entity 205 may stop attempting to detect the postamble sequence.
[0145] Another approach for the first network entity 205 to stop detecting the postamble may include determining the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB. For example, the tag may assume that if x contiguous line decoding errors have occurred, the tag can stop reception of the current packet. Again, x may be a positive integer that is signaled, (pre) defined, or otherwise (pre) configured for the first network entity 205.
[0146] FIG. 3 shows an example of a PHY TB 300 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. PHY TB 300 may implement aspects of wireless communication system 100 or wireless communication system 200. Aspects of PHY TB 300 may be implemented at or implemented by an A-IoT device or a reader, which may be examples of the corresponding devices described herein. For example, the A-IoT device may be an example of a UE, which may also be referred to as a first network entity, and the reader may be an example of a UE or a network entity, which may also be referred to as a second network entity.
[0147] As discussed above, aspects of the described techniques may support a reader transmitting or otherwise outputting a PHY TB to an A-IoT device over a FL. The PHY TB may include a preamble portion 305, a control portion 310, a data portion 315, and a postamble portion 320. The preamble portion 305 may generally carry or otherwise convey an indication of various parameters associated with communicating the PHY TB over the FL. For example, the preamble portion 305 may begin with a delimiter (e.g., an OFF period where no signal is transmitted for a duration) to indicate the beginning of the PHY TB. Non-limiting examples of the parameters may include the transmission data rate associated with the PHY TB, symbol information, an expected backscatter rate, or similar parameters.
[0148] The control portion 310 may carry or otherwise convey information related to the reader or the A-IoT device that the PHY TB is addressed to. For example, the control portion 310 may carry or otherwise convey an indication of a reader identifier, a tag identifier, a cast type, and a TDI. The identifier information carried in the control portion 310 may identify which A-IoT device or tag that the PHY TB is addressed to. As discussed above, the TDI may indicate or otherwise identify a range which includes the packet length for the PHY TB. For example, the TDI may include one or more bits (e.g., chips) that identify a packet length table that includes the range of the packet length. Non-limiting examples of the packet length table are shown in Tables 1 and 2 above.
[0149] In some aspects, each A-IoT device within the coverage area of the reader may receive the PHY and decode the preamble portion 305 and the control portion 310. For example, a non-target A-IoT device (e.g., an A-IoT device that the PHY TB is not addressed to) may receive the preamble portion 305 and the control portion 310. The non-target A-IoT device may decode the identifier information and identify or otherwise determine that the PHY TB is not addressed to it. The non-target A-IoT device may then read the TDI and perform an early drop where the non-target A-IoT device enters a sleep mode. For example, the non-target A-IoT device may receive the control portion 310 and use the TDI to determine the minimum range (e.g., 168 chips, in the example discussed above) during which the non-target A-IoT device enters the sleep mode. That is, each A-IoT device may be (pre) configured or otherwise indicated of the packet length table (s) corresponding to the TDI indication. This early drop may enable the non-target A-IoT device to conserve power (e.g., rather than monitoring for the full packet length to detect the postamble portion 320) .
[0150] However, the target A-IoT device (e.g., the first network entity) may receive the preamble portion 305 and the control portion 310 via the FL. The target A-IoT device may read the identifier information carried in the control portion 310 as well as the TDI indication. The target A-IoT device may identify or otherwise determine that the PHY TB is addressed to it based on the identifier information. The target A-IoT device may read the TDI to determine the range that includes the packet length for the PHY TB. For example, the target A-IoT device may reference the appropriate packet length table and the values indicated in the TDI to determine the range of the packet length. According, the target A-IoT device may continue to monitor the channel for at least the minimum duration of the range of the packet length (e.g., for 168 chips, continuing with the example discussed above) . This may include the target A-IoT device receiving or otherwise obtaining the data portion 315 based on the TDI provided in the control portion 310. That is, the target A-IoT device my monitor for the PHY TB for an entirety of the range according to the TDI based on the PHY TB being addressed to the target A-IoT device.
[0151] At the 169th chip, the target A-IoT device may continue decoding the PHY TB and begin looking for the sequence that identifies the end of the PHY TB in the postamble portion 320. That is, the target A-IoT device may receive or otherwise obtain the postamble portion 320 that includes the sequence (e.g., four chips or eight chips) that identifies the end of the PHY TB. For example, the target A-IoT device may blindly decode the postamble portion 320 to detect the sequence denoting the end of the PHY TB.
[0152] Accordingly, the PHY TB 300 may provide a mechanism where a small amount of bits (e.g., one bit, two bits, or perhaps three bits) provided in the control portion 310 are used to indicate the range (e.g., the minimum size) of the PHY TB and then a small sequence of bits (e.g., two bits or four bits) carried in the postamble portion 320 are used to signal the end of the PHY TB. For the target A-IoT device, this may include finding the packet end via the TDI and postamble of the PHY TB. The overhead associated with this may include two bits (e.g., four chips) used for the TDI indication and four chips (e.g., two bits) used for the postamble sequence indication (e.g., a total of eight chips or four bits) . The target A-IoT device may monitor for the postamble at least in the TDI defined window.
[0153] For the non-target A-IoT device (e.g., based on the identifier information, such as the group identifier, device identifier, or reader identifier carried in the control portion 310) , this may include the device determining its sleep duration based on the TDI. This non-target A-IoT device may sleep until the PHY packet end (e.g., in the code or time domain) as indicated by the TDI. In some aspect, the end of the PHY TB may be based on the upper bound or the lower bound of the window (e.g., range) denoted by the TDI. For example, the range that includes the end of the PHY TB may begin at the lower bound (e.g., 168 chips) and be located before the upper bound (e.g., the 225th chip, continuing with the example discussed above) .
[0154] FIG. 4 shows an example of a PHY TB 400 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. PHY TB 400 may implement aspects of wireless communication system 100 or wireless communication system 200 or aspects of PHY TB 300. Aspects of PHY TB 400 may be implemented at or implemented by an A-IoT device or a reader, which may be examples of the corresponding devices described herein. For example, the A-IoT device may be an example of a UE, which may also be referred to as a first network entity, and the reader may be an example of a UE or a network entity, which may also be referred to as a second network entity.
[0155] As discussed above, aspects of the described techniques may support a reader transmitting or otherwise outputting a PHY TB to an A-IoT device. PHY TB 400 illustrates a non-limiting example of the techniques describe herein being used with or without the postamble portion, with the BL PHY TB, as well as for the FL (e.g., FL control) to indicate the BL (E. g., BL control and data) . For example, the PHY TB transmitted or otherwise output via the FL may include a preamble portion 405 and a control portion 410. The control portion 410 of the FL PHY TB may carry or otherwise convey an indication of a packet length (e.g., or packet range) of the BL PHY TB. The BL PHY TB may include a preamble portion 415 and the data portion 420, with a duration of the BL PHY TB being indicated or otherwise associated with the TDI indicated in the control portion 410 of the FL PHY TB. Accordingly, although the techniques discussed above include the TDI being used in conjunction with the postamble portion of the FL PHY TB, it is to be understood that the techniques discussed above may be directly extended to the no postamble case, as is shown in PHY TB 400.
[0156] FIG. 5 shows an example of a PHY TB 500 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. PHY TB 500 may implement aspects of wireless communication system 100 or wireless communication system 200 or aspects of PHY TB 300 or PHY TB 400. Aspects of PHY TB 500 may be implemented at or implemented by an A-IoT device or a reader, which may be examples of the corresponding devices described herein. For example, the A-IoT device may be an example of a UE, which may also be referred to as a first network entity, and the reader may be an example of a UE or a network entity, which may also be referred to as a second network entity.
[0157] As discussed above, aspects of the described techniques may support a reader transmitting or otherwise outputting a PHY TB to an A-IoT device. PHY TB 500 illustrates a non-limiting example where aspects of the described techniques are extended to a midamble. For example, the PHY TB conveyed via the FL may include preamble portion 505, a control portion 510, a first data segment 515, a midamble portion 520, a second data segment 525, and a postamble portion 530. Accordingly, in some aspects, the A-IoT may receive or otherwise obtain the preamble portion 505 and the control portion 510 of the PHY TB, with the control portion 510 indicating a TDI that identifies a range which includes the packet length for the PHY TB.
[0158] The A-IoT may also receive or otherwise obtain the first data segment 515 and the midamble portion 520 of the PHY TB. The midamble portion 520 may be prior in a time domain relative to the postamble portion 530 (e.g., may be before the postamble portion 530) . In some aspects, the midamble portion 520 may include a midamble sequence for detecting the postamble portion 530. The postamble portion 530, in this example, may be associated with a postamble timer that is established for detecting the sequence in the postamble portion 530.
[0159] In some aspects, the postamble may be replaced by an end-delimiter or the postamble may be extended to the midamble. For example, data and CRC in different segments may be all or partially cover coded by different sequences (e.g., the first sequence may be used for a last segment and a second sequence may be used for other segments) . Either the first segment or the second segment may be all “1” s (e.g., no cover code) , a timer or counter (e.g., in the time domain or bit domain) is applied to the tag. If the sequence for the last segment is not detected, the tag may stop decoding if the timer or counter has expired. Accordingly, the TDI carried in the control portion 510 may identify a sequence length associated with the postamble portion 530 or with the midamble portion 520 of the PHY TB. The TDI may be based on a cover code applied to the preamble portion 505, the midamble portion 520, or to the postamble portion 530.
[0160] In some aspects, if the last segment size is small (e.g., less than a threshold that may be signaled, (pre) defined, or otherwise (pre) configured for the A-IoT) , there may be no need for the postamble portion 530 (e.g., the TDI may be sufficient to indicate the end of the PHY TB) . In some aspects, the TDI table may be used to indicate one segmentation size (e.g., rather than all segments) . The number of segments (e.g., the number of the first data segment 515 and the second data segment 525) may be explicitly indicated or implicitly indicated by the midamble portion 520. This may support both the postamble case and the non-postamble case.
[0161] Accordingly, in some aspects the cover code (e.g., the UE identifier, group identifier, reader identifier) may also be applied of the preamble, midamble, or delimiter. This may provide for an early indication of the TDI.
[0162] In some aspects, this may include the A-IoT identifying or otherwise determine a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB. For example, different preamble or delimiter sequences may be defined for the PHY TB. This may permit the A-IoT to differentiate whether the FL packet is for a query or not or whether the FL packet is for synchronization or not. That is, the packet type (e.g., query or synchronization) may be indicated based on the preamble sequence or the delimiter sequence.
[0163] In some aspects, the A-IoT may identify or otherwise determine an estimate of the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB. For example, different preamble or delimiter sequences may be defined. This may be used to implicitly indicate the rough size of the PHY packet (e.g., the range of the packet length) .
[0164] The A-IoT may also receive or otherwise obtain the postamble portion 530 of the PHY TB, where the postamble portion 530 indicates a sequence that identifies an end of the PHY TB. The A-IoT may identify or otherwise determine the end of the PHY TB based on the sequence indicated in the midamble portion 520 or the postamble portion 530.
[0165] FIG. 6 shows a block diagram 600 of a device 605 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605, or one or more components of the device 605 (e.g., the receiver 610, the transmitter 615, the communications manager 620) , 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 (e.g., via one or more buses) .
[0166] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to transmission duration indication) . Information may be passed on to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.
[0167] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to transmission duration indication) . In some aspects, the transmitter 615 may be co-located with a receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.
[0168] The communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be examples of means for performing various aspects of transmission duration indication as described herein. For example, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0169] In some aspects, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., 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 aspects, 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 (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0170] Additionally, or alternatively, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 620, the receiver 610, the transmitter 615, 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 (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0171] In some aspects, the communications manager 620 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 610 or the transmitter 615. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, or the transmitter 615 to obtain information, output information, or perform various other operations as described herein.
[0172] For example, the communications manager 620 is capable of, configured to, or operable to support a means for obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The communications manager 620 is capable of, configured to, or operable to support a means for obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0173] For example, the communications manager 620 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The communications manager 620 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0174] By including or configuring the communications manager 620 in accordance with examples as described herein, the device 605 (e.g., at least one processor controlling or otherwise coupled with the receiver 610, the transmitter 615, the communications manager 620, or a combination thereof) may support techniques for using a small TDI carried in a control portion of a PHY TB as well as a small sequence carried in a postamble portion of the PHY TB to enable an A-IoT to determine the end of the PHY TB.
[0175] FIG. 7 shows a block diagram 700 of a device 705 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The device 705 may be an example of aspects of a device 605 or 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 of more components of the device 705 (e.g., 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 support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0176] 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 (e.g., control channels, data channels, information channels related to transmission duration indication) . 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.
[0177] 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 (e.g., control channels, data channels, information channels related to transmission duration indication) . In some aspects, 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.
[0178] The device 705, or various components thereof, may be an example of means for performing various aspects of transmission duration indication as described herein. For example, the communications manager 720 may include a control manager 725 a postamble manager 730, or any combination thereof. The communications manager 720 may be an example of aspects of a communications manager 620 as described herein. In some aspects, the communications manager 720, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 710, or the transmitter 715. 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 or the transmitter 715 to obtain information, output information, or perform various other operations as described herein.
[0179] The control manager 725 is capable of, configured to, or operable to support a means for obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The postamble manager 730 is capable of, configured to, or operable to support a means for obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0180] The control manager 725 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The postamble manager 730 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0181] FIG. 8 shows a block diagram 800 of a communications manager 820 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The communications manager 820 may be an example of aspects of a communications manager 620, or a communications manager 720, as described herein. The communications manager 820, or various components thereof, may be an example of means for performing various aspects of transmission duration indication as described herein. For example, the communications manager 820 may include a control manager 825, a postamble manager 830, a table manager 835, an PHY TB manager 840, a midamble manager 845, an PHY TB type manager 850, a sequence manager 855, a timer manager 860, a decoding manager 865, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0182] The control manager 825 is capable of, configured to, or operable to support a means for obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The postamble manager 830 is capable of, configured to, or operable to support a means for obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0183] In some aspects, the table manager 835 is capable of, configured to, or operable to support a means for obtaining a packet length table associated with PHY TB transmissions, where the TDI identifies the range in the packet length table.
[0184] In some aspects, the PHY TB manager 840 is capable of, configured to, or operable to support a means for determining that the PHY TB is addressed to the first network entity based on the control portion. In some aspects, the PHY TB manager 840 is capable of, configured to, or operable to support a means for monitoring for the PHY TB for an entirety of the range according to the TDI based on the PHY TB being addressed to the first network entity.
[0185] In some aspects, the table manager 835 is capable of, configured to, or operable to support a means for obtaining a set of packet length tables associated with PHY TB transmissions, where the TDI identifies the range in a packet length table, and where the control portion indicates an index to the packet length table in the set of packet length tables.
[0186] In some aspects, a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables. In some aspects, the TDI is associated with at least one of a time domain range or a code domain range. In some aspects, the time domain range may include one or multiple slots. In some aspects, a granularity associated with the TDI includes at least one of one or more chips, one or more symbols, or one or more slots. In some aspects, the TDI is based on a delimiter or preamble duration granularity. In some aspects, a start of the range indicated in the TDI is associated with at least one of a data start location within the PHY TB or the control portion or a start of the control portion. In some aspects, the TDI is associated with a preamble sequence or a delimiter sequence.
[0187] In some aspects, the midamble manager 845 is capable of, configured to, or operable to support a means for obtaining a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion. In some aspects, the midamble portion includes a midamble sequence for detecting the postamble portion. In some aspects, a postamble timer is established for detecting the sequence in the postamble portion. In some aspects, the TDI identifies a sequence length associated with the postamble portion or a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion. In some aspects, the TDI is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the PHY TB.
[0188] In some aspects, the PHY TB type manager 850 is capable of, configured to, or operable to support a means for determining a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0189] In some aspects, the sequence manager 855 is capable of, configured to, or operable to support a means for estimating the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0190] In some aspects, the timer manager 860 is capable of, configured to, or operable to support a means for determining the end of the PHY TB based on an associated timer.
[0191] In some aspects, the decoding manager 865 is capable of, configured to, or operable to support a means for determining the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB.
[0192] In some aspects, the control manager 825 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. In some aspects, the postamble manager 830 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0193] In some aspects, the table manager 835 is capable of, configured to, or operable to support a means for outputting, to the first network entity, a packet length table associated with PHY TB transmissions, where the TDI identifies the range in the packet length table. In some aspects, the table manager 835 is capable of, configured to, or operable to support a means for outputting, to the first network entity, a set of packet length tables associated with PHY TB transmissions, where the TDI identifies the range in a packet length table, and where the control portion indicates an index to the packet length table in the set of packet length tables.
[0194] In some aspects, a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables. In some aspects, the TDI is associated with at least one of a time domain range or a code domain range. In some aspects, the time domain range may include one or multiple slots. In some aspects, a granularity associated with the TDI includes at least one of one or more chips, one or more symbols, or one or more slots. In some aspects, the TDI is based on a delimiter or preamble duration granularity. In some aspects, a start of the range indicated in the TDI is associated with at least one of a data start location within the PHY TB or the control portion or a start of the control portion. In some aspects, the TDI is associated with a preamble sequence or a delimiter sequence.
[0195] In some aspects, the midamble manager 845 is capable of, configured to, or operable to support a means for outputting, to the first network entity, a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion.
[0196] In some aspects, the midamble portion includes a midamble sequence for detecting the postamble portion. In some aspects, a postamble timer is established for detecting the sequence in the postamble portion. In some aspects, the TDI identifies a sequence length associated with the postamble portion or a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion. In some aspects, the TDI is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the PHY TB.
[0197] In some aspects, the PHY TB type manager 850 is capable of, configured to, or operable to support a means for indicating a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0198] In some aspects, the sequence manager 855 is capable of, configured to, or operable to support a means for indicating the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0199] In some aspects, the timer manager 860 is capable of, configured to, or operable to support a means for indicating the end of the PHY TB based on an associated timer.
[0200] In some aspects, the decoding manager 865 is capable of, configured to, or operable to support a means for indicating the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB. In some examples, the sequence includes a repeating set of symbol chips.
[0201] FIG. 9 shows a diagram of a system 900 including a device 905 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The device 905 may be an example of or include components of a device 605, a device 705, or a UE 115 as described herein. The device 905 may communicate (e.g., wirelessly) with one or more other devices (e.g., network entities 105, UEs 115, or a combination thereof) . The device 905 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 920, an input / output (I / O) controller, such as an I / O controller 910, a transceiver 915, one or more antennas 925, at least one memory 930, code 935, and at least one processor 940. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 945) .
[0202] The I / O controller 910 may manage input and output signals for the device 905. The I / O controller 910 may also manage peripherals not integrated into the device 905. In some cases, the I / O controller 910 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 910 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 910 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 910 may be implemented as part of one or more processors, such as the at least one processor 940. In some cases, a user may interact with the device 905 via the I / O controller 910 or via hardware components controlled by the I / O controller 910.
[0203] In some cases, the device 905 may include a single antenna. However, in some other cases, the device 905 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 915 may communicate bi-directionally via the one or more antennas 925 using wired or wireless links as described herein. For example, the transceiver 915 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 915 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 925 for transmission, and to demodulate packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and one or more antennas 925, may be an example of a transmitter 615, a transmitter 715, a receiver 610, a receiver 710, or any combination thereof or component thereof, as described herein.
[0204] The at least one memory 930 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 930 may store computer-readable, computer-executable, or processor-executable code, such as the code 935. The code 935 may include instructions that, when executed by the at least one processor 940, cause the device 905 to perform various functions described herein. The code 935 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 935 may not be directly executable by the at least one processor 940 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 930 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.
[0205] The at least one processor 940 may include one or more intelligent hardware devices (e.g., 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 cases, the at least one processor 940 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 940. The at least one processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting transmission duration indication) . For example, the device 905 or a component of the device 905 may include at least one processor 940 and at least one memory 930 coupled with or to the at least one processor 940, the at least one processor 940 and the at least one memory 930 configured to perform various functions described herein.
[0206] In some aspects, the at least one processor 940 may include multiple processors and the at least one memory 930 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 aspects, the at least one processor 940 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 940) and memory circuitry (which may include the at least one memory 930) ) , 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 940 or a processing system including the at least one processor 940 may be configured to, configurable to, or operable to cause the device 905 to perform one or more of the 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 935 (e.g., processor-executable code) stored in the at least one memory 930 or otherwise, to perform one or more of the functions described herein.
[0207] For example, the communications manager 920 is capable of, configured to, or operable to support a means for obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The communications manager 920 is capable of, configured to, or operable to support a means for obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0208] For example, the communications manager 920 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The communications manager 920 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0209] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 may support techniques for using a small TDI carried in a control portion of a PHY TB as well as a small sequence carried in a postamble portion of the PHY TB to enable an A-IoT to determine the end of the PHY TB.
[0210] In some aspects, the communications manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 915, the one or more antennas 925, or any combination thereof. Although the communications manager 920 is illustrated as a separate component, in some aspects, one or more functions described with reference to the communications manager 920 may be supported by or performed by the at least one processor 940, the at least one memory 930, the code 935, or any combination thereof. For example, the code 935 may include instructions executable by the at least one processor 940 to cause the device 905 to perform various aspects of transmission duration indication as described herein, or the at least one processor 940 and the at least one memory 930 may be otherwise configured to, individually or collectively, perform or support such operations.
[0211] FIG. 10 shows a block diagram 1000 of a device 1005 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of aspects of a network entity 105 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005, or one or more components of the device 1005 (e.g., the receiver 1010, the transmitter 1015, the communications manager 1020) , 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 (e.g., via one or more buses) .
[0212] The receiver 1010 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1005. In some aspects, the receiver 1010 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1010 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0213] The transmitter 1015 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1005. For example, the transmitter 1015 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some aspects, the transmitter 1015 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1015 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some aspects, the transmitter 1015 and the receiver 1010 may be co-located in a transceiver, which may include or be coupled with a modem.
[0214] The communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be examples of means for performing various aspects of transmission duration indication as described herein. For example, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0215] In some aspects, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be implemented in hardware (e.g., 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 aspects, 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 (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0216] Additionally, or alternatively, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 1020, the receiver 1010, the transmitter 1015, 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 (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0217] In some aspects, the communications manager 1020 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1010 or the transmitter 1015. For example, the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010 or the transmitter 1015 to obtain information, output information, or perform various other operations as described herein.
[0218] For example, the communications manager 1020 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The communications manager 1020 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0219] By including or configuring the communications manager 1020 in accordance with examples as described herein, the device 1005 (e.g., at least one processor controlling or otherwise coupled with the receiver 1010, the transmitter 1015, the communications manager 1020, or a combination thereof) may support techniques for using a small TDI carried in a control portion of a PHY TB as well as a small sequence carried in a postamble portion of the PHY TB to enable an A-IoT to determine the end of the PHY TB.
[0220] FIG. 11 shows a block diagram 1100 of a device 1105 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of aspects of a device 1005 or 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 of more components of the device 1105 (e.g., 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 support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0221] The receiver 1110 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., 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 aspects, 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 (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0222] The transmitter 1115 may provide a means for outputting (e.g., 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 (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some aspects, 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 (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some aspects, the transmitter 1115 and the receiver 1110 may be co-located in a transceiver, which may include or be coupled with a modem.
[0223] The device 1105, or various components thereof, may be an example of means for performing various aspects of transmission duration indication as described herein. For example, the communications manager 1120 may include a control manager 1125 a postamble manager 1130, or any combination thereof. The communications manager 1120 may be an example of aspects of a communications manager 1020 as described herein. In some aspects, the communications manager 1120, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1110 or the transmitter 1115. 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 or the transmitter 1115 to obtain information, output information, or perform various other operations as described herein.
[0224] The control manager 1125 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The postamble manager 1130 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0225] FIG. 12 shows a block diagram 1200 of a communications manager 1220 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The communications manager 1220 may be an example of aspects of a communications manager 1020 or a communications manager 1120, as described herein. The communications manager 1220, or various components thereof, may be an example of means for performing various aspects of transmission duration indication as described herein. For example, the communications manager 1220 may include a control manager 1225, a postamble manager 1230, a table manager 1235, a midamble manager 1240, an PHY TB type manager 1245, a sequence manager 1250, a timer manager 1255, a decoding manager 1260, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., 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 (e.g., 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.
[0226] The control manager 1225 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The postamble manager 1230 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0227] In some aspects, the table manager 1235 is capable of, configured to, or operable to support a means for outputting, to the first network entity, a packet length table associated with PHY TB transmissions, where the TDI identifies the range in the packet length table. In some aspects, the table manager 1235 is capable of, configured to, or operable to support a means for outputting, to the first network entity, a set of packet length tables associated with PHY TB transmissions, where the TDI identifies the range in a packet length table, and where the control portion indicates an index to the packet length table in the set of packet length tables.
[0228] In some aspects, a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables. In some aspects, the TDI is associated with at least one of a time domain range or a code domain range. In some aspects, the time domain range may include one or multiple slots. In some aspects, a granularity associated with the TDI includes at least one of one or more chips, one or more symbols, or one or more slots. In some aspects, the TDI is based on a delimiter or preamble duration granularity. In some aspects, a start of the range indicated in the TDI is associated with at least one of a data start location within the PHY TB or the control portion or a start of the control portion. In some aspects, the TDI is associated with a preamble sequence or a delimiter sequence.
[0229] In some aspects, the midamble manager 1240 is capable of, configured to, or operable to support a means for outputting, to the first network entity, a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion. In some aspects, the midamble portion includes a midamble sequence for detecting the postamble portion. In some aspects, a postamble timer is established for detecting the sequence in the postamble portion. In some aspects, the TDI identifies a sequence length associated with the postamble portion or a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion. In some aspects, the TDI is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the PHY TB.
[0230] In some aspects, the PHY TB type manager 1245 is capable of, configured to, or operable to support a means for indicating a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0231] In some aspects, the sequence manager 1250 is capable of, configured to, or operable to support a means for indicating the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0232] In some aspects, the timer manager 1255 is capable of, configured to, or operable to support a means for indicating the end of the PHY TB based on an associated timer.
[0233] In some aspects, the decoding manager 1260 is capable of, configured to, or operable to support a means for indicating the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB. In some examples, the sequence includes a repeating set of symbol chips.
[0234] FIG. 13 shows a diagram of a system 1300 including a device 1305 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The device 1305 may be an example of or include components of a device 1005, a device 1105, or a network entity 105 as described herein. The device 1305 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 1305 may include components that support outputting and obtaining communications, such as a communications manager 1320, a transceiver 1310, one or more antennas 1315, at least one memory 1325, code 1330, and at least one processor 1335. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1340) .
[0235] The transceiver 1310 may support bi-directional communications via wired links or wireless links, as described herein. In some aspects, the transceiver 1310 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some aspects, the transceiver 1310 may include a wireless transceiver and may communicate bi-directionally with another wireless transceiver. In some aspects, the device 1305 may include one or more antennas 1315, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently) . The transceiver 1310 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1315, by a wired transmitter) , to receive modulated signals (e.g., from one or more antennas 1315, from a wired receiver) , and to demodulate signals. In some implementations, the transceiver 1310 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1315 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1315 that are configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1310 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 1310, or the transceiver 1310 and the one or more antennas 1315, or the transceiver 1310 and the one or more antennas 1315 and one or more processors or one or more memory components (e.g., the at least one processor 1335, or the at least one memory 1325) , may be included in a chip or chip assembly that is installed in the device 1305. In some aspects, the transceiver 1310 may be operable to support communications via one or more communications links (e.g., communication link (s) 125, backhaul communication link (s) 120, a midhaul communication link 162, a fronthaul communication link 168) .
[0236] The at least one memory 1325 may include RAM, ROM, or any combination thereof. The at least one memory 1325 may store computer-readable, computer-executable, or processor-executable code, such as the code 1330. The code 1330 may include instructions that, when executed by one or more of the at least one processor 1335, cause the device 1305 to perform various functions described herein. The code 1330 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1330 may not be directly executable by a processor of the at least one processor 1335 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1325 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 aspects, the at least one processor 1335 may include multiple processors and the at least one memory 1325 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 (for example, as part of a processing system) .
[0237] The at least one processor 1335 may include one or more intelligent hardware devices (e.g., 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 cases, the at least one processor 1335 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 1335. The at least one processor 1335 may be configured to execute computer-readable instructions stored in a memory (e.g., one or more of the at least one memory 1325) to cause the device 1305 to perform various functions (e.g., functions or tasks supporting transmission duration indication) . For example, the device 1305 or a component of the device 1305 may include at least one processor 1335 and at least one memory 1325 coupled with one or more of the at least one processor 1335, the at least one processor 1335 and the at least one memory 1325 configured to perform various functions described herein. The at least one processor 1335 may be an example of a cloud-computing platform (e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (e.g., by executing code 1330) to perform the functions of the device 1305. The at least one processor 1335 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1305 (such as within one or more of the at least one memory 1325) .
[0238] In some aspects, the at least one processor 1335 may include multiple processors and the at least one memory 1325 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 aspects, the at least one processor 1335 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 1335) and memory circuitry (which may include the at least one memory 1325) ) , 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 1335 or a processing system including the at least one processor 1335 may be configured to, configurable to, or operable to cause the device 1305 to perform one or more of the 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 stored in the at least one memory 1325 or otherwise, to perform one or more of the functions described herein.
[0239] In some aspects, a bus 1340 may support communications of (e.g., within) a protocol layer of a protocol stack. In some aspects, a bus 1340 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack) , which may include communications performed within a component of the device 1305, or between different components of the device 1305 that may be co-located or located in different locations (e.g., where the device 1305 may refer to a system in which one or more of the communications manager 1320, the transceiver 1310, the at least one memory 1325, the code 1330, and the at least one processor 1335 may be located in one of the different components or divided between different components) .
[0240] In some aspects, the communications manager 1320 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links) . For example, the communications manager 1320 may manage the transfer of data communications for client devices, such as one or more UEs 115. In some aspects, the communications manager 1320 may manage communications with one or more other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 (e.g., in cooperation with the one or more other network devices) . In some aspects, the communications manager 1320 may support an X2 interface within an LTE / LTE-A wireless communications network technology to provide communication between network entities 105.
[0241] For example, the communications manager 1320 is capable of, configured to, or operable to support a means for outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The communications manager 1320 is capable of, configured to, or operable to support a means for outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB.
[0242] By including or configuring the communications manager 1320 in accordance with examples as described herein, the device 1305 may support techniques for using a small TDI carried in a control portion of a PHY TB as well as a small sequence carried in a postamble portion of the PHY TB to enable an A-IoT to determine the end of the PHY TB.
[0243] In some aspects, the communications manager 1320 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1310, the one or more antennas 1315 (e.g., where applicable) , or any combination thereof. Although the communications manager 1320 is illustrated as a separate component, in some aspects, one or more functions described with reference to the communications manager 1320 may be supported by or performed by the transceiver 1310, one or more of the at least one processor 1335, one or more of the at least one memory 1325, the code 1330, or any combination thereof (for example, by a processing system including at least a portion of the at least one processor 1335, the at least one memory 1325, the code 1330, or any combination thereof) . For example, the code 1330 may include instructions executable by one or more of the at least one processor 1335 to cause the device 1305 to perform various aspects of transmission duration indication as described herein, or the at least one processor 1335 and the at least one memory 1325 may be otherwise configured to, individually or collectively, perform or support such operations.
[0244] FIG. 14 shows a flowchart illustrating a method 1400 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The operations of the method 1400 may be implemented by a UE or its components as described herein. For example, the operations of the method 1400 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some aspects, 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.
[0245] At 1405, the method may include obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The operations of 1405 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1405 may be performed by a control manager 825 as described with reference to FIG. 8.
[0246] At 1410, the method may include obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB. The operations of 1410 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1410 may be performed by a postamble manager 830 as described with reference to FIG. 8.
[0247] FIG. 15 shows a flowchart illustrating a method 1500 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. 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 FIGs. 1 through 9. In some aspects, 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.
[0248] At 1505, the method may include obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The operations of 1505 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1505 may be performed by a control manager 825 as described with reference to FIG. 8.
[0249] At 1510, the method may include obtaining a packet length table associated with PHY TB transmissions, where the TDI identifies the range in the packet length table. The operations of 1510 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1510 may be performed by a table manager 835 as described with reference to FIG. 8.
[0250] At 1515, the method may include obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB. The operations of 1515 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1515 may be performed by a postamble manager 830 as described with reference to FIG. 8.
[0251] FIG. 16 shows a flowchart illustrating a method 1600 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. 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 FIGs. 1 through 9. In some aspects, 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.
[0252] At 1605, the method may include obtaining a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The operations of 1605 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1605 may be performed by a control manager 825 as described with reference to FIG. 8.
[0253] At 1610, the method may include determining that the PHY TB is addressed to the first network entity based on the control portion. The operations of 1610 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1610 may be performed by an PHY TB manager 840 as described with reference to FIG. 8.
[0254] At 1615, the method may include obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB. The operations of 1615 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1615 may be performed by a postamble manager 830 as described with reference to FIG. 8.
[0255] At 1620, the method may include monitoring for the PHY TB for an entirety of the range according to the TDI based on the PHY TB being addressed to the first network entity. The operations of 1620 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1620 may be performed by an PHY TB manager 840 as described with reference to FIG. 8.
[0256] FIG. 17 shows a flowchart illustrating a method 1700 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The operations of the method 1700 may be implemented by a UE or a network entity 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 FIGs. 1 through 9 or a network entity as described with reference to FIGs. 1 through 5 and 10 through 13. In some aspects, a UE or a network entity may execute a set of instructions to control the functional elements of the UE or the network entity to perform the described functions. Additionally, or alternatively, the UE or the network entity may perform aspects of the described functions using special-purpose hardware.
[0257] At 1705, the method may include outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The operations of 1705 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1705 may be performed by a control manager 825 or a control manager 1225 as described with reference to FIGs. 8 and 12.
[0258] At 1710, the method may include outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB. The operations of 1710 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1710 may be performed by a postamble manager 830 or a postamble manager 1230 as described with reference to FIGs. 8 and 12.
[0259] FIG. 18 shows a flowchart illustrating a method 1800 that supports transmission duration indication in accordance with one or more aspects of the present disclosure. The operations of the method 1800 may be implemented by a UE or a network entity or its components as described herein. For example, the operations of the method 1800 may be performed by a UE 115 as described with reference to FIGs. 1 through 9 or a network entity as described with reference to FIGs. 1 through 5 and 10 through 13. In some aspects, a UE or a network entity may execute a set of instructions to control the functional elements of the UE or the network entity to perform the described functions. Additionally, or alternatively, the UE or the network entity may perform aspects of the described functions using special-purpose hardware.
[0260] At 1805, the method may include outputting, to a first network entity, a control portion of a PHY TB via a FL, where the PHY TB has a packet length, and where the control portion of the PHY TB includes a TDI that identifies a range which includes the packet length for the PHY TB. The operations of 1805 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1805 may be performed by a control manager 825 or a control manager 1225 as described with reference to FIGs. 8 and 12.
[0261] At 1810, the method may include outputting, to the first network entity, a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion. The operations of 1810 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1810 may be performed by a midamble manager 845 or a midamble manager 1240 as described with reference to FIGs. 8 and 12.
[0262] At 1815, the method may include outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, where the postamble portion of the PHY TB includes a sequence that identifies an end of the PHY TB. The operations of 1815 may be performed in accordance with examples as disclosed herein. In some aspects, aspects of the operations of 1815 may be performed by a postamble manager 830 or a postamble manager 1230 as described with reference to FIGs. 8 and 12.
[0263] The following provides an overview of aspects of the present disclosure:
[0264] Aspect 1: A method of wireless communication performed by a first network entity, comprising: obtaining a control portion of a PHY TB via a FL, wherein the PHY TB has a packet length, and wherein the control portion of the PHY TB comprises a TDI that identifies a range which includes the packet length for the PHY TB; and obtaining, via the FL and within the range of the packet length, a postamble portion of the PHY TB, wherein the postamble portion of the PHY TB comprises a sequence that identifies an end of the PHY TB.
[0265] Aspect 2: The method of aspect 1, further comprising: obtaining a packet length table associated with PHY TB transmissions, wherein the TDI identifies the range in the packet length table.
[0266] Aspect 3: The method of any of aspects 1 through 2, further comprising: determining that the PHY TB is addressed to the first network entity based on the control portion; and monitoring for the PHY TB for an entirety of the range according to the TDI based on the PHY TB being addressed to the first network entity.
[0267] Aspect 4: The method of any of aspects 1 through 3, further comprising: obtaining a set of packet length tables associated with PHY TB transmissions, wherein the TDI identifies the range in a packet length table, and wherein the control portion indicates an index to the packet length table in the set of packet length tables.
[0268] Aspect 5: The method of aspect 4, wherein a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables.
[0269] Aspect 6: The method of any of aspects 1 through 5, wherein the TDI is associated with at least one of a time domain range or a code domain range, and the time domain range may comprise one or multiple slots.
[0270] Aspect 7: The method of any of aspects 1 through 6, wherein a granularity associated with the TDI comprises at least one of one or more chips, one or more symbols, or one or more slots.
[0271] Aspect 8: The method of any of aspects 1 through 7, wherein the TDI is based on a delimiter or preamble duration granularity.
[0272] Aspect 9: The method of any of aspects 1 through 8, wherein a start of the range indicated in the TDI is associated with at least one of a data start location within the PHY TB or the control portion or a start of the control portion.
[0273] Aspect 10: The method of any of aspects 1 through 9, wherein the TDI is associated with a preamble sequence or a delimiter sequence.
[0274] Aspect 11: The method of any of aspects 1 through 10, further comprising: obtaining a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion.
[0275] Aspect 12: The method of aspect 11, wherein the midamble portion comprises a midamble sequence for detecting the postamble portion, and a postamble timer is established for detecting the sequence in the postamble portion.
[0276] Aspect 13: The method of any of aspects 1 through 12, wherein the TDI identifies a sequence length associated with the postamble portion or a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion.
[0277] Aspect 14: The method of any of aspects 1 through 13, wherein the TDI is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the PHY TB.
[0278] Aspect 15: The method of any of aspects 1 through 14, further comprising: determining a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB
[0279] Aspect 16: The method of any of aspects 1 through 15, further comprising: estimating the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0280] Aspect 17: The method of any of aspects 1 through 16, further comprising: determining the end of the PHY TB based on an associated timer.
[0281] Aspect 18: The method of any of aspects 1 through 17, further comprising: determining the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB.
[0282] Aspect 19: The method of any of aspects 1 through 18, wherein the sequence comprises a repeating set of symbol chips.
[0283] Aspect 20: A method of wireless communication performed by a second network entity, comprising: outputting, to a first network entity, a control portion of a PHY TB via a FL, wherein the PHY TB has a packet length, and wherein the control portion of the PHY TB comprises a TDI that identifies a range which includes the packet length for the PHY TB; and outputting, to the first network entity via the FL and within the range of the packet length, a postamble portion of the PHY TB, wherein the postamble portion of the PHY TB comprises a sequence that identifies an end of the PHY TB.
[0284] Aspect 21: The method of aspect 20, further comprising: outputting, to the first network entity, a packet length table associated with PHY TB transmissions, wherein the TDI identifies the range in the packet length table.
[0285] Aspect 22: The method of any of aspects 20 through 21, further comprising: outputting, to the first network entity, a set of packet length tables associated with PHY TB transmissions, wherein the TDI identifies the range in a packet length table, and wherein the control portion indicates an index to the packet length table in the set of packet length tables.
[0286] Aspect 23: The method of aspect 22, wherein a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables.
[0287] Aspect 24: The method of any of aspects 20 through 23, wherein the TDI is associated with at least one of a time domain range or a code domain range, and the time domain range may comprise one or multiple slots.
[0288] Aspect 25: The method of any of aspects 20 through 24, wherein a granularity associated with the TDI comprises at least one of one or more chips, one or more symbols, or one or more slots.
[0289] Aspect 26: The method of any of aspects 20 through 25, wherein the TDI is based on a delimiter or preamble duration granularity.
[0290] Aspect 27: The method of any of aspects 20 through 26, wherein a start of the range indicated in the TDI is associated with at least one of a data start location within the PHY TB or the control portion or a start of the control portion.
[0291] Aspect 28: The method of any of aspects 20 through 27, wherein the TDI is associated with a preamble sequence or a delimiter sequence.
[0292] Aspect 29: The method of any of aspects 20 through 28, further comprising: outputting, to the first network entity, a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion.
[0293] Aspect 30: The method of aspect 29, wherein the midamble portion comprises a midamble sequence for detecting the postamble portion, and a postamble timer is established for detecting the sequence in the postamble portion.
[0294] Aspect 31: The method of any of aspects 20 through 30, wherein the TDI identifies a sequence length associated with the postamble portion or a midamble portion of the PHY TB that is prior in a time domain relative to the postamble portion.
[0295] Aspect 32: The method of any of aspects 20 through 31, wherein the TDI is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the PHY TB.
[0296] Aspect 33: The method of any of aspects 20 through 32, further comprising: indicating a packet type for the PHY TB based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0297] Aspect 34: The method of any of aspects 20 through 33, further comprising: indicating the packet length based on a preamble sequence or a delimiter sequence associated with the PHY TB.
[0298] Aspect 35: The method of any of aspects 20 through 34, further comprising: indicating the end of the PHY TB based on an associated timer.
[0299] Aspect 36: The method of any of aspects 20 through 35, further comprising: indicating the end of the PHY TB based on a threshold number of decoding errors associated with obtaining the PHY TB.
[0300] Aspect 37: The method of any of aspects 20 through 36, wherein the sequence comprises a repeating set of symbol chips.
[0301] Aspect 38: A first network entity comprising a processing system configured to cause the first network entity to perform a method of any of aspects 1 through 19.
[0302] Aspect 39: A first network entity comprising at least one means for performing a method of any of aspects 1 through 19.
[0303] Aspect 40: A non-transitory computer-readable medium having code for wireless communication stored thereon that, when executed by a first network entity, causes the first network entity to perform a method of any of aspects 1 through 19.
[0304] Aspect 41: A second network entity comprising a processing system configured to cause the second network entity to perform a method of any of aspects 20 through 37.
[0305] Aspect 42: A second network entity comprising at least one means for performing a method of any of aspects 20 through 37.
[0306] Aspect 43: A non-transitory computer-readable medium having code for wireless communication thereon that, when executed by a second network entity, causes the second network entity to perform a method of any of aspects 20 through 37.
[0307] The methods described herein describe possible implementations, and the operations and the steps may be rearranged or otherwise modified and other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0308] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0309] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0310] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, a graphics processing unit (GPU) , a neural processing unit (NPU) , an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0311] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0312] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0313] As used herein, the term “or” is an inclusive “or” unless limiting language is used relative to the alternatives listed. For example, reference to “X being based on A or B” shall be construed as including within its scope X being based on A, X being based on B, and X being based on A and B. In this regard, reference to “X being based on A or B” refers to “at least one of A or B” or “one or more of A or B” due to “or” being inclusive. Similarly, reference to “X being based on A, B, or C” shall be construed as including within its scope X being based on A, X being based on B, X being based on C, X being based on A and B, X being based on A and C, X being based on B and C, and X being based on A, B, and C. In this regard, reference to “X being based on A, B, or C” refers to “at least one of A, B, or C” or “one or more of A, B, or C” due to “or” being inclusive. As an example of limiting language, reference to “X being based on only one of A or B” shall be construed as including within its scope X being based on A as well as X being based on B, but not X being based on A and B. Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like. In other words, the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently. Also, as used herein, the phrase “aset” shall be construed as including the possibility of a set with one member. That is, the phrase “aset” shall be construed in the same manner as “one or more” or “at least one of. ” As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. For example, if a claim recites “acomponent” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “acomponent” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0314] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database, or another data structure) , ascertaining, and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) , and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0315] In the figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label or other subsequent reference label.
[0316] The description set forth herein, in connection with the drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “aspect” or “example” used herein means “serving as an aspect, example, instance, or illustration” and not “preferred” or “advantageous over other aspects. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some figures, structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0317] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A first network entity for wireless communication, comprising:a processing system configured to:obtain a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andobtain, via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.2.The first network entity of claim 1, wherein the processing system is configured to:obtain a packet length table associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in the packet length table.3.The first network entity of claim 1, wherein the processing system is configured to:determine that the physical layer transport block is addressed to the first network entity based on the control portion; andmonitor for the physical layer transport block for an entirety of the range according to the transmission duration indicator based on the physical layer transport block being addressed to the first network entity.4.The first network entity of claim 1, wherein the processing system is configured to:obtain a set of packet length tables associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in a packet length table, and wherein the control portion indicates an index to the packet length table in the set of packet length tables.5.The first network entity of claim 4, wherein a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables.6.The first network entity of claim 1, wherein the transmission duration indicator is associated with at least one of a time domain range or a code domain range, and wherein the time domain range may comprise one or multiple slots.7.The first network entity of claim 1, wherein a granularity associated with the transmission duration indicator comprises at least one of one or more chips, one or more symbols, or one or more slots.8.The first network entity of claim 1, wherein the transmission duration indicator is based on a delimiter or preamble duration granularity.9.The first network entity of claim 1, wherein a start of the range indicated in the transmission duration indicator is associated with at least one of a data start location within the physical layer transport block or the control portion or a start of the control portion.10.The first network entity of claim 1, wherein the transmission duration indicator is associated with a preamble sequence or a delimiter sequence.11.The first network entity of claim 1, wherein the processing system is configured to:obtain a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.12.The first network entity of claim 11, wherein the midamble portion comprises a midamble sequence to detect the postamble portion, and wherein a postamble timer is established to detect the sequence in the postamble portion.13.The first network entity of claim 1, wherein the transmission duration indicator identifies a sequence length associated with the postamble portion or a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.14.The first network entity of claim 1, wherein the transmission duration indicator is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the physical layer transport block.15.The first network entity of claim 1, wherein the processing system is configured to:determine a packet type for the physical layer transport block based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.16.The first network entity of claim 1, wherein the processing system is configured to:estimate the packet length based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.17.The first network entity of claim 1, wherein the processing system is configured to:determine the end of the physical layer transport block based on an associated timer.18.The first network entity of claim 1, wherein the processing system is configured to:determine the end of the physical layer transport block based on a threshold number of decoding errors associated with obtaining the physical layer transport block.19.The first network entity of claim 1, wherein the sequence comprises a repeating set of symbol chips.20.A second network entity for wireless communication, comprising:a processing system configured to:output, to a first network entity, a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andoutput, to the first network entity via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.21.The second network entity of claim 20, wherein the processing system is configured to:output, to the first network entity, a packet length table associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in the packet length table.22.The second network entity of claim 20, wherein the processing system is configured to:output, to the first network entity, a set of packet length tables associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in a packet length table, and wherein the control portion indicates an index to the packet length table in the set of packet length tables.23.The second network entity of claim 22, wherein a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables.24.The second network entity of claim 20, wherein the transmission duration indicator is associated with at least one of a time domain range or a code domain range, and wherein the time domain range may comprise one or multiple slots.25.The second network entity of claim 20, wherein a granularity associated with the transmission duration indicator comprises at least one of one or more chips, one or more symbols, or one or more slots.26.The second network entity of claim 20, wherein the transmission duration indicator is based on a delimiter or preamble duration granularity.27.The second network entity of claim 20, wherein a start of the range indicated in the transmission duration indicator is associated with at least one of a data start location within the physical layer transport block or the control portion or a start of the control portion.28.The second network entity of claim 20, wherein the transmission duration indicator is associated with a preamble sequence or a delimiter sequence.29.The second network entity of claim 20, wherein the processing system is configured to:output, to the first network entity, a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.30.The second network entity of claim 29, wherein the midamble portion comprises a midamble sequence to detect the postamble portion, and wherein a postamble timer is established to detect the sequence in the postamble portion.31.The second network entity of claim 20, wherein the transmission duration indicator identifies a sequence length associated with the postamble portion or a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.32.The second network entity of claim 20, wherein the transmission duration indicator is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the physical layer transport block.33.The second network entity of claim 20, wherein the processing system is configured to:indicate a packet type for the physical layer transport block based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.34.The second network entity of claim 20, wherein the processing system is configured to:indicate the packet length based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.35.The second network entity of claim 20, wherein the processing system is configured to:indicate the end of the physical layer transport block based on an associated timer.36.The second network entity of claim 20, wherein the processing system is configured to:indicate the end of the physical layer transport block based on a threshold number of decoding errors associated with obtaining the physical layer transport block.37.The second network entity of claim 20, wherein the sequence comprises a repeating set of symbol chips.38.A method of wireless communication performed by a first network entity, comprising:obtaining a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andobtaining, via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.39.The method of claim 38, further comprising:obtaining a packet length table associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in the packet length table.40.The method of claim 38, further comprising:determining that the physical layer transport block is addressed to the first network entity based on the control portion; andmonitoring for the physical layer transport block for an entirety of the range according to the transmission duration indicator based on the physical layer transport block being addressed to the first network entity.41.The method of claim 38, further comprising:obtaining a set of packet length tables associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in a packet length table, and wherein the control portion indicates an index to the packet length table in the set of packet length tables.42.The method of claim 41, wherein a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables.43.The method of claim 38, wherein the transmission duration indicator is associated with at least one of a time domain range or a code domain range, and wherein the time domain range may comprise one or multiple slots.44.The method of claim 38, wherein a granularity associated with the transmission duration indicator comprises at least one of one or more chips, one or more symbols, or one or more slots.45.The method of claim 38, wherein the transmission duration indicator is based on a delimiter or preamble duration granularity.46.The method of claim 38, wherein a start of the range indicated in the transmission duration indicator is associated with at least one of a data start location within the physical layer transport block or the control portion or a start of the control portion.47.The method of claim 38, wherein the transmission duration indicator is associated with a preamble sequence or a delimiter sequence.48.The method of claim 38, further comprising:obtaining a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.49.The method of claim 48, wherein the midamble portion comprises a midamble sequence for detecting the postamble portion, and wherein a postamble timer is established for detecting the sequence in the postamble portion.50.The method of claim 38, wherein the transmission duration indicator identifies a sequence length associated with the postamble portion or a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.51.The method of claim 38, wherein the transmission duration indicator is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the physical layer transport block.52.The method of claim 38, further comprising:determining a packet type for the physical layer transport block based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.53.The method of claim 38, further comprising:estimating the packet length based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.54.The method of claim 38, further comprising:determining the end of the physical layer transport block based on an associated timer.55.The method of claim 38, further comprising:determining the end of the physical layer transport block based on a threshold number of decoding errors associated with obtaining the physical layer transport block.56.The method of claim 38, wherein the sequence comprises a repeating set of symbol chips.57.A method of wireless communication performed by a second network entity, comprising:outputting, to a first network entity, a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andoutputting, to the first network entity via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.58.The method of claim 57, further comprising:outputting, to the first network entity, a packet length table associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in the packet length table.59.The method of claim 57, further comprising:outputting, to the first network entity, a set of packet length tables associated with physical layer transport block transmissions, wherein the transmission duration indicator identifies the range in a packet length table, and wherein the control portion indicates an index to the packet length table in the set of packet length tables.60.The method of claim 59, wherein a first table in the set of packet length tables is associated with a first range granularity that is a different granularity than a second range granularity associated with a second table in the set of packet length tables.61.The method of claim 57, wherein the transmission duration indicator is associated with at least one of a time domain range or a code domain range, and wherein the time domain range may comprise one or multiple slots.62.The method of claim 57, wherein a granularity associated with the transmission duration indicator comprises at least one of one or more chips, one or more symbols, or one or more slots.63.The method of claim 57, wherein the transmission duration indicator is based on a delimiter or preamble duration granularity.64.The method of claim 57, wherein a start of the range indicated in the transmission duration indicator is associated with at least one of a data start location within the physical layer transport block or the control portion or a start of the control portion.65.The method of claim 57, wherein the transmission duration indicator is associated with a preamble sequence or a delimiter sequence.66.The method of claim 57, further comprising:outputting, to the first network entity, a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.67.The method of claim 66, wherein the midamble portion comprises a midamble sequence for detecting the postamble portion, and wherein a postamble timer is established for detecting the sequence in the postamble portion.68.The method of claim 57, wherein the transmission duration indicator identifies a sequence length associated with the postamble portion or a midamble portion of the physical layer transport block that is prior in a time domain relative to the postamble portion.69.The method of claim 57, wherein the transmission duration indicator is based on a cover code applied to at least one of a preamble portion, a midamble portion, or the postamble portion of the physical layer transport block.70.The method of claim 57, further comprising:indicating a packet type for the physical layer transport block based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.71.The method of claim 57, further comprising:indicating the packet length based on a preamble sequence or a delimiter sequence associated with the physical layer transport block.72.The method of claim 57, further comprising:indicating the end of the physical layer transport block based on an associated timer.73.The method of claim 57, further comprising:indicating the end of the physical layer transport block based on a threshold number of decoding errors associated with obtaining the physical layer transport block.74.The method of claim 57, wherein the sequence comprises a repeating set of symbol chips.75.A first network entity, comprising:means for obtaining a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andmeans for obtaining, via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.76.A second network entity, comprising:means for outputting, to a first network entity, a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andmeans for outputting, to the first network entity via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.77.A non-transitory computer-readable medium having code for wireless communication stored thereon that, when executed by a first network entity, causes the first network entity to:obtain a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andobtain, via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.78.A non-transitory computer-readable medium having code for wireless communication stored thereon that, when executed by a second network entity, causes the second network entity to:output, to a first network entity, a control portion of a physical layer transport block via a forward link, wherein the physical layer transport block has a packet length, and wherein the control portion of the physical layer transport block comprises a transmission duration indicator that identifies a range which includes the packet length for the physical layer transport block; andoutput, to the first network entity via the forward link and within the range of the packet length, a postamble portion of the physical layer transport block, wherein the postamble portion of the physical layer transport block comprises a sequence that identifies an end of the physical layer transport block.
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