Selective message transmission based on wireless device operating state
Wireless devices optimize message transmission by considering their operating state and buffer status to avoid duplicate procedures, reducing collisions and enhancing resource efficiency.
Patent Information
- Application Number
- PCT/CN2024/110583
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2026-02-12
AI Technical Summary
Wireless devices performing duplicate access procedures cause communication delays and resource inefficiencies due to unnecessary response messages, leading to potential collisions.
Wireless devices implement criteria based on their operating state and buffer status to selectively transmit response messages, avoiding duplicate procedures and optimizing resource usage.
This approach reduces communication collisions and enhances resource efficiency by ensuring wireless devices only transmit necessary messages based on their current state and priority, thereby minimizing delays.
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Figure CN2024110583_12022026_PF_FP_ABST
Abstract
Description
SELECTIVE MESSAGE TRANSMISSION BASED ON WIRELESS DEVICE OPERATING STATE
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communication, including selective message transmission based on wireless device operating state.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (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) .
[0004] 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) . In some examples, a reader device (e.g., a UE, a base station) may communicate with ambient wireless devices, such as ambient Internet of Things (IoT) devices.SUMMARY
[0005] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0006] A method for wireless communication by a wireless device is described. The method may include receiving a trigger message requesting a response message from one or more wireless devices including the wireless device and transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0007] A wireless device for wireless communication is described. The wireless device may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the wireless device to receive a trigger message requesting a response message from one or more wireless devices including the wireless device and transmit, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0008] Another wireless device for wireless communication is described. The wireless device may include means for receiving a trigger message requesting a response message from one or more wireless devices including the wireless device and means for transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0009] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors to receive a trigger message requesting a response message from one or more wireless devices including the wireless device and transmit, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0010] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 shows an example of a wireless communications system that supports selective message transmission based on wireless device operating state in accordance with one or more aspects of the present disclosure.
[0012] FIG. 2 shows an example of a wireless communications system that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure.
[0013] FIGs. 3, 4, and 5 shows examples of process flows that support selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure.
[0014] FIGs. 6 and 7 show block diagrams of devices that support selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure.
[0015] FIG. 8 shows a block diagram of a communications manager that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure.
[0016] FIG. 9 shows a diagram of a system including a device that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure.
[0017] FIGs. 10 and 11 show flowcharts illustrating methods that support selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0018] A wireless communications system may include wireless devices, such as ambient wireless devices (e.g., ambient internet-of-things (IoT) devices, such as tag devices, sensor devices) , which may communicate with a reader device in the wireless communications system when triggered by the reader device. In some cases, a wireless device may be configured to transmit a response message in response to a trigger message received from a reader device. For example, as part of an access procedure, the reader device may transmit (e.g., broadcast) a trigger message to one or more wireless devices (e.g., near the reader device) , and the wireless device may transmit the response message including one or more identifiers associated with the wireless device, data, or both. In some cases, the reader device may repeat the trigger message, such as to perform an access procedure for other wireless devices. However, as the wireless device may be configured to respond to the trigger device, the wireless device may perform a duplicate access procedure, which may cause additional communication delays, resource inefficiency, and communication collisions between wireless devices.
[0019] In accordance with examples as described herein, a wireless device (e.g., an ambient IoT device) may implement a set of one or more criteria to avoid transmitting unnecessary response messages to reader devices. In some examples, the wireless device may be configured with a set of operating states corresponding to whether an access procedure has been initiated or completed, or whether the wireless device has been inventoried (e.g., by a network entity or reader device, or if the wireless device has transmitted upper layer data) . The wireless device may be configured to respond to messages from a reader device in accordance with a current operating state of the wireless device. For example, a content of the response messages may be based on the current operating state, or the wireless device may discard or postpone response messages based on the current operating state. Additionally, or alternatively, the wireless device may perform response messages to a reader device based on one or more priority rules associated with messages received from a reader device, or based on a memory status (e.g., buffer status) of the wireless device. As such, the wireless device may refrain from performing duplicate access procedures, for example, and may thereby avoid potential communication collisions with other devices and reduce resource inefficiencies.
[0020] As described herein, a reader device may refer to any device that may interact or otherwise engage in communications with a wireless device (e.g., an ambient wireless device, a tag device) . In some cases, a reader device may be an example of an ambient IoT Reader, a UE, a base station or another network entity, or another device. For example, a reader device may communicate with a wireless device, and may forward data received from the wireless device to a network entity. In some examples, a reader device may communicate with an ambient wireless device using one or more communication techniques. In some examples, the communication techniques for reading (e.g., accessing) or communicating with the ambient wireless device may be relatively simple or be associated with relatively low power consumption, such as on-off keying (OOK) or similar techniques (e.g., frequency-shift keying (FSK) or another technique) . In some cases, a reader device may directly or indirectly communicate with an ambient wireless device. For instance, the reader device (e.g., a network entity, a UE) may directly query the ambient wireless device and receive a response from the ambient wireless device. Additionally, or alternatively, the reader device (e.g., a network entity such as a base station, an ambient IoT controller) may page another device (e.g., another reader device, such as a UE) to query the ambient wireless device, and the other device may relay information received from the ambient wireless device to the reader device.
[0021] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated with reference to process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to selective message transmission based on an operating state of a wireless device.
[0022] FIG. 1 shows an example of a wireless communications system 100 that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure. The wireless communications 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 examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0023] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (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) .
[0024] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communications system 100 (e.g., other wireless communication devices, including UEs 115 or network entities 105) , as shown in FIG. 1.
[0025] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (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.
[0026] In some examples, network entities 105 may communicate with a core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via backhaul communication link (s) 120 (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 examples, 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.
[0027] 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 examples, 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) .
[0028] In some examples, 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 examples, 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) ) .
[0029] 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 examples, 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, RUs 170, or both 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 examples, 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.
[0030] In some wireless communications systems (e.g., the wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (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 examples, 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.
[0031] 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) .
[0032] 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 examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an 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.
[0033] 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.
[0034] 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 communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (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) .
[0035] 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, the coding rate of the modulation scheme, or both) , 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.
[0036] 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) .
[0037] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (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 communications system 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0038] 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 communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, 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 communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0039] 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) .
[0040] In some examples, 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 examples, 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 communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0041] Some UEs 115, such as MTC or IoT devices (e.g., ambient 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 examples, 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.
[0042] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0043] In some examples, 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 examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (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 examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to one or more of the UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0044] 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.
[0045] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (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.
[0046] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) RAT, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0047] 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 examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0048] 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, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0049] 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.
[0050] 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 examples, 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.
[0051] In some examples, 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) .
[0052] 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 examples, 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.
[0053] In some examples, the wireless communications system 100 may include wireless devices, such as ambient wireless devices (e.g., ambient IoT devices, such as tag devices) , which may communicate with a reader device (e.g., a network entity 105, a UE 115) when triggered by the reader device. For example, a wireless device may be configured to transmit a response message in response to a trigger message received from a reader device. As part of an access procedure, the reader device may transmit (e.g., broadcast) a trigger message to one or more wireless devices (e.g., near the reader device) , and the wireless device may transmit the response message including one or more identifiers associated with the wireless device, data, or both. In some cases, the reader device may repeat the trigger message, such as to perform an access procedure for other wireless devices. However, as the wireless device may be configured to respond to the trigger device, the wireless device may perform a duplicate access procedure, which may cause additional communication delays, resource inefficiency, and communication collisions between wireless devices.
[0054] In accordance with examples as described herein, a wireless device (e.g., an ambient IoT device) may implement a set of one or more criteria to avoid transmitting unnecessary response messages to reader devices. In some examples, the wireless device may be configured with a set of operating states corresponding to whether an access procedure has been initiated or completed, or whether the wireless device has been inventoried (e.g., by a network entity or reader device, or if the wireless device has transmitted upper layer data) . A content of the response messages may be based on the current operating state, or the wireless device may discard or postpone response messages based on the current operating state. Additionally, or alternatively, the wireless device may perform response messages to a reader device based on one or more priority rules associated with messages received from a reader device, or based on a memory status of the wireless device. As such, the wireless device may avoid potential communication collisions with other devices and reduce resource inefficiencies of the wireless communications system 100.
[0055] FIG. 2 shows an example of a wireless communications system 200 that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure. The wireless communications system 200 may include a reader device 205 (e.g., a network entity 105, a UE 115) and a wireless device 210 (e.g., an ambient IoT device) , which may be examples of corresponding devices as described herein.
[0056] In some examples, the wireless device 210 may be configured to perform operations in response to messages received form the reader device 205. For example, the wireless device 210 may be a low-complexity device (e.g., a tag device, a sensor device) , which may rely on backscattering of an incident signal (e.g., transmitted by the reader device 205) to output a signal to the reader device 205. As such, the wireless device 210 may support bidirectional communication with the reader device 205.
[0057] In some examples, the reader device 205 may be a network entity 105, which may communicate directly with the wireless device 210. For example, the network entity 105 may exchange ambient IoT data and signaling with the wireless device 210. Additionally, or alternatively, the reader device 205 may be an intermediate node (e.g., a UE 115 supporting ambient IoT, another device) , which may communicate with the wireless device 210. The intermediate node may be configured to transfer (e.g., via one or more messages) ambient IoT data and signaling between the wireless device 210 and a network entity 105.
[0058] In some cases, the reader device 205 may be configured to perform an inventory procedure of wireless devices 210 near the reader device 205. For example, the reader device 205 may perform a trigger message 220 (e.g., an inventory trigger message) . In some examples, the reader device 205 may transmit the trigger message 220 in response to an inventory request (e.g., from a network entity 105 or an application layer) . In some cases, the inventory request may include filter criteria for the inventory procedure (e.g., to report wireless devices 210 that meet the filter criteria) . The wireless device 210 and the reader device 205 may perform an access procedure in response to the trigger message 220. In some examples, the reader device 205 may transmit an inventory response (e.g., to a network entity 105 or application layer) , which may include a list of one or more inventoried wireless devices 210.
[0059] In some examples, the reader device 205 may be configured to issue a command to one or more wireless devices 210 (e.g., based on an inventory procedure) . In some examples, the reader device 205 may issue the command in response to a message (e.g., from a network entity or an application layer) , which may indicate the reader device 205 to request identifiers associated with the one or more wireless devices 210, a command container (e.g., to write to, read from, or disable the one or more wireless devices 210) , or filter criteria (e.g., to limit the command to wireless devices 210 that meet the criteria) . As such, the wireless device 210 and the reader device 205 may perform an access procedure and exchange data in response to commands. The reader device 205 may transmit a command response message (e.g., to the network entity 105 or the application layer) in response to one or more messages received from the one or more wireless devices 210.
[0060] In some examples, an access procedure performed by the wireless device 210 and the reader device 205 may include one or more messages. For example, in response to the trigger message 220 transmitted by the reader device 205, the wireless device 210 may transmit a response message 225 (e.g., a Msg1) . In some examples, the response message 225 may include an identifier associated with the wireless device 210 (e.g., a random identifier generated by the wireless device 210, a contention resolution identifier, a device identifier) . In some cases, the reader device 205 may transmit a message (e.g., a Msg2) in response to the response message 225, which may echo (e.g., include) the identifier included in the response message 225, include other information, or both.
[0061] In some examples, as part of the access procedure (e.g., if requested by the reader device 205, such as via the trigger message 220) , the wireless device 210 may transmit a data message 230. The data message 230 may include an identifier (e.g., a device identifier, or another identifier) , requested data (e.g., control data, upper layer data) , or both. In some cases, the data message 230 may be transmitted based on receiving the message (e.g., the Msg2) echoing the identifier indicated by the trigger message 220, which may indicate that a contention resolution procedure was successful. In some cases, the reader device 205 may transmit an acknowledgment message 235 in response to the data message 230. In some cases, the acknowledgment message 235 may indicate the wireless device 210 that the transmission of the data message 230 was received or successful.
[0062] In some cases, one or more of these messages may be combined. For example, the response message 225 transmitted by the wireless device 210 may include both the identifier and data (e.g., instead of indicating the data via the data message 230) . In some cases, the reader device 205 may transmit a response to the response message 225 that echoes (e.g., indicates, includes) the identifier, the data, or both.
[0063] In some examples, messages transmitted by the reader device 205 may implement dedicated scheduling (e.g., such as for commands) , and may directly communicate with the wireless device 210 (e.g., via unicast signaling) . Additionally, or alternatively, messages transmitted by the reader device 205 may implement common scheduling, and may be transmitted to nearby wireless devices 210 around the reader device 205 (e.g., via multicast or broadcast signaling) . For example, the access procedure (e.g., the trigger message 220) may be transmitted in accordance with common scheduling.
[0064] In some cases, however, the reader device 205 may transmit (e.g., broadcast) an additional trigger message 220 after performing an access procedure with the reader device 205. As the reader device 205 may be configured to perform an access procedure in response to any trigger message 220, the reader device 205 may continue with performing a duplicate access procedure, which may cause introduce delays (e.g., at the reader device 205) , resource inefficiency, and communication collisions with other wireless devices 210. For example, the wireless device 210 may perform another response message 225 in response to the trigger message 220, or may perform a data message 230 to transmit data that has previously been transmitted to the reader device 205.
[0065] In accordance with examples as described herein, the wireless device 210 may be configured to transmit messages in response to signaling from the reader device 205 in accordance with one or more criteria. In some examples, the wireless device 210 may implement one or more operating states 215. For example, the operating states 215 may correspond to whether an access procedure for the wireless device 210 has been initiated, whether the access procedure has been (e.g., successfully) completed, whether the wireless device 210 has been inventoried (e.g., by the reader device 205) , or a combination thereof.
[0066] In some examples, the wireless device 210 may shift between operating states 215 based on a message received from the reader device 205 or a message transmitted by the wireless device 210. As such, the wireless device 210 may have one operating state 215 active at one time, and may shift between operating states 215 based on signaling or events that occur. Additionally, or alternatively, the wireless device 210 may initialize each of the one or more operating states 215 with a respective value (e.g., corresponding to “false” or 0) . The wireless device 210 may update a value of an operating state 215 (e.g., to “true” or 1) based on receiving or transmitting signaling, or based on an event occurring.
[0067] In some examples, the wireless device 210 may transition operating states 215 (e.g., or update a value of an operating state 215) to a first state associated with initiation of an access procedure based on transmission of the response message 225 (e.g., or transmission of a random ID) , or based on a threshold duration having elapsed (e.g., based on a timer initiation) from the transmission of the response message 225.
[0068] The wireless device 210 may transition operating states 215 (e.g., or update a value of an operating state 215) to a second state associated with completion of the access procedure based on reception of the message from the reader device 205 echoing the response message 225, or based on a threshold duration having elapsed (e.g., based on a timer initiation) from the transmission of the message. Additionally, or alternatively, the wireless device 210 may transition to the second state based on the wireless device 210 having (e.g., or determining) an identifier, such as a local identifier, a temporary identifier, or an access stratum (AS) layer identifier. The identifier may be received from (e.g., assigned by) the reader device 205, or a controller (e.g., an ambient IoT controller, a control network (CN) controller) , or may be assigned or determined by the wireless device 210 (e.g., based on receiving the message from the reader device 205) .
[0069] In some examples, the wireless device 210 may transition operating states 215 (e.g., or update a value of an operating state 215) to a third state associated with an inventory of the wireless device 210 (e.g., by the reader device 205) based on transmission of the data message 230, or based on a threshold duration having elapsed from the transmission of the data message 230. Additionally, or alternatively, the wireless device 210 may transition to the third state based on receiving the acknowledgment message 235 in response to the data message 230. In some examples, the wireless device 210 may indicate (e.g., report) a current operating state 215 (e.g., to the reader device 205 or a controller, such as an ambient IoT controller or a CN controller) . In some cases, the indication of the current operating state 215 may be based on a request form the reader device 205 (e.g., or a controller) .
[0070] Additionally, or alternatively, the wireless device 210 may update a value of an operating state 215 or transition between operating states 215 based on receiving a message requesting a change in an operating state 215 (e.g., from the reader device 205, such as based on an indication from an upper layer, a controller such as an ambient IoT controller or a CN controller) . In some cases, updating the value of an operating state 215 or transitioning between operating states 215 may be based on expiration of a timer, which may be initiated by the wireless device 210. In some examples, the timer may be initiated in response to a message from the reader device 205 or from a controller (e.g., an ambient IoT or CN controller) . Additionally, or alternatively, the timer may be initiated based on the wireless device 210 detecting that a communication quality with the reader device 205 has dropped below a threshold quality or has increased above a threshold quality. In some cases, the wireless device 210 may update a value of an operating state 215 or transition between operating states 215 based on detecting a new reader device 205 (e.g., initiating communications with a new reader device 205) , or communications with the reader device 205 being dropped (e.g., or a timer initiated based on these conditions) .
[0071] For example, the wireless device 210 may be configured to implement four operating states 215, each corresponding to whether contention resolution is successful (e.g., based on whether the message echoing information from the response message 225 is received) and whether data (e.g., upper layer data) has been successfully transmitted (e.g., based on transmission of the data message 230) . This example is shown with respect to Table 1.
[0072] Table 1: Example operating states 215 implementation for the wireless device 210
[0073] In some cases, the wireless device 210 may be configured to maintain multiple operating states 215. In some examples, different operating states 215 may be maintained in different layers. For example, operating states 215 relating to whether an access procedure was initiated or completed may be managed in a first layer (e.g., an AS layer) , and operating states 215 relating to whether the wireless device 210 was inventoried may be managed in a second layer (e.g., an upper layer) . In some cases, the operating states 215 may be maintained per wireless device 210, per device session for the wireless device 210, per processing block or entity (e.g., ambient IoT processing block / entity) , per peer node (e.g., per reader device 205) , per frequency (e.g., used by the wireless device 210, the reader device 205, or both) , or a combination thereof.
[0074] In some examples, the wireless device 210 may be configured to refrain from transmitting responses to signaling received from the reader device 205 based on the current operating state. For example, if the operating states 215 indicate that the wireless device 210 has been inventoried, the wireless device 210 may refrain from communicating a data message 230 (e.g., or any additional signaling) . Additionally, or alternatively, the wireless device 210 may determine to refrain from communicating messages in response to common scheduling. The wireless device 210 may determine whether a received message operates according to common scheduling or dedicated scheduling based on identification used for scrambling (e.g., as a radio network temporary identifier (RNTI) ) included in the received message, or based on whether there is a target device identifier (e.g., for dedicated scheduling) or a device group identifier (e.g., for common scheduling) included in the received message (e.g., in a header of the message) .
[0075] Additionally, or alternatively, the wireless device 210 may discard (e.g., or ignore) messages received from the reader device 205 based on the operating states 215. For example, the wireless device 210 may refrain from transmitting a response message 225 to a trigger message 220 if the operating states 215 indicate that an access procedure for the wireless device 210 has been performed or initiated. In some examples, the wireless device 210 may postpone processing of a received message based on the operating states 215 (e.g., for a threshold duration) , or may transmit a specific message in response, such as indicating a current operating state 215. In some cases, the wireless device 210 may process a received message from the reader device 205, but may avoid generating a response or discard a generated response based on the operating states 215 (e.g., or may consider the generated response not available for transmission) .
[0076] In some examples, the wireless device 210 may be configured to transmit messages in response to signaling from the reader device 205 in accordance with one or more priority rules (e.g., in addition or alternatively from the operating states 215) . For example, the wireless device 210 may determine priorities between messages received from the wireless device 210 or other wireless devices 210. In some examples, the wireless device 210 may prioritize messages based on a reception timing. For example, a first message received may be prioritized over a second message received after the first message, or vice versa.
[0077] Additionally, or alternatively, messages may be prioritized based on scheduling methods (e.g., unicast, multicast, broadcast) used by messages, or based on a message type (e.g., a control message, a data message, a type of control message, a type of data) . In some examples, the wireless device 210 may prioritize message based on an indication carried in the message. For example, the reader device 205 may include a priority indication (e.g., ranking, value) in a message, which may be used to rank the message against other received messages. Additionally, or alternatively, messages may be prioritized based on a resource used by the wireless device 210 to receive each respective message, or based on a resource to be used by the wireless device 210 to respond to each respective message. As such, the wireless device 210 may postpone processing of a deprioritized message, or may discard a deprioritized message in favor of a prioritized message.
[0078] In some examples, the wireless device 210 may be configured to transmit messages in response to signaling from the reader device 205 in accordance with a status of a memory of the wireless device 210 (e.g., in addition or alternatively from the operating states 215 and the priority rules) . For example, the wireless device 210 may be configured to perform a response to a message (e.g., a response message 225 in response to a trigger message 220) based on a capacity of the memory of the wireless device 210 (e.g., a buffer capacity) being above a threshold value or below a threshold value.
[0079] Accordingly, the wireless device 210 may determine whether to transmit messages, such as response messages 225 (e.g., Msg1, random identifier transmissions) , data transmissions (e.g., upper layer data, requested by the reader device 205) , and control data (e.g., MAC control element message, Layer 1 control data) , based on one or more conditions or criteria, which may improve communication efficiency and reduce communication collisions between wireless devices 210.
[0080] FIG. 3 shows an example of a process flow 300 that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure. The process flow 300 may include a reader device 305 (e.g., a network entity 105, a UE 115) and a wireless device 310 (e.g., an ambient IoT device) , which may be examples of corresponding devices as described herein. Operations of the process flow 300 may be performed in a different order than shown, or some operations may be omitted from or added to the process flow 300.
[0081] At 315, the reader device 305 may transmit a trigger message to the wireless device 310. The trigger message may request a response message from the wireless device 310 and, in some cases, one or more additional wireless devices 310.
[0082] At 320, the wireless device 310 may transmit the response message (e.g., Msg1) responsive to the trigger message. In some examples, a content of the response message or transmission of the response message may be based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof. The response message may include information associated with an identifier associated with the wireless device 310 (e.g., a random identifier) , control information, data associated with the wireless device 310 or a combination thereof.
[0083] In some cases, the wireless device 310 may update a current operating state of the wireless device 310 based on transmission of the response message. For example, the wireless device 310 may transition the current operating state to a first state associated with an initiation of an access procedure. In some examples, the transition of the operating state may occur after a threshold duration has elapsed after transmission of the response message.
[0084] At 325, the reader device 305 may transmit a message (e.g., Msg2) to the wireless device 310, and the message may be associated with contention resolution. For example, the message may include (e.g., echo) information associated with the identifier associated with the wireless device 310 or other data.
[0085] At 330, the wireless device 310 may update an operating state of the wireless device 310. For example, the wireless device 310 may transition a current operating state to a second state associated with a completion of the access procedure. In some examples, the transition of the operating state may occur after a threshold duration has elapsed after reception of the message associated with contention resolution.
[0086] At 335, the wireless device 310 may transmit a data message (e.g., Msg3) to the reader device 305. In some examples, the data message may be responsive to the trigger message, the message associated with contention resolution, or both. For example, the data message may indicate data, such as upper layer data, which may be requested by the trigger message.
[0087] At 340, the reader device 305 may transmit an acknowledgment message in response to receiving the data message. The acknowledgment message may indicate that the data message was successfully received by the reader device 305.
[0088] At 345, the wireless device 310 may update an operating state based on reception of the acknowledgment message. For example, the wireless device 310 may transition the current operating state to a third state associated with an inventory of the wireless device 310 (e.g., having been completed) . Additionally, or alternatively, the operating state may be updated after a threshold duration has elapsed from reception of the acknowledgment message or transmission of the data message.
[0089] At 350, the reader device 305 may transmit an additional trigger message. For example, the reader device 305 may broadcast the additional trigger message to one or more wireless devices 310 including the wireless device 310. The trigger message may correspond to initiating an access procedure, may request data from the one or more wireless devices 310, or both.
[0090] At 355, the wireless device 310 may refrain from transmission of a response message (e.g., including data requested by the additional trigger message) in response to the additional trigger message based on the current operating state of the wireless device 310.
[0091] FIG. 4 shows an example of a process flow 400 that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure. The process flow 400 may include a reader device 405 (e.g., a network entity 105, a UE 115) and a wireless device 410 (e.g., an ambient IoT device) , which may be examples of corresponding devices as described herein. Operations of the process flow 400 may be performed in a different order than shown, or some operations may be omitted from or added to the process flow 400.
[0092] At 415, the reader device 405 may transmit a trigger message to the wireless device 410. The trigger message may request a response message from the wireless device 410 and, in some cases, one or more additional wireless devices 410.
[0093] At 420, the wireless device 410 may transmit the response message (e.g., Msg1) responsive to the trigger message. The response message may include information associated with an identifier associated with the wireless device 410 (e.g., a random identifier) , control information, data associated with the wireless device 410 or a combination thereof.
[0094] At 425, the reader device 405 may transmit a message (e.g., Msg2) to the wireless device 410, and the message may be associated with contention resolution. For example, the message may include (e.g., echo) information associated with the identifier associated with the wireless device 410 or other data.
[0095] At 430, the wireless device 410 may update an operating state of the wireless device 410. For example, the wireless device 410 may transition a current operating state to a second state associated with a completion of the access procedure. In some examples, the transition of the operating state may occur after a threshold duration has elapsed after reception of the message associated with contention resolution.
[0096] At 435, the wireless device 410 may transmit a data message (e.g., Msg3) to the reader device 405, which may be responsive to the trigger message. In some cases, however, the transmission of the data message to the reader device 405 may be unsuccessful (e.g., due to contention failure, interference, network conditions) .
[0097] At 440, the reader device 405 may transmit an additional trigger message, which may request the data transmitted by the first trigger message. At 445, the wireless device 410 may refrain from transmitting a response message to the additional trigger message based on a current operating state of the wireless device 410. For example, the current operating state may indicate that the wireless device 410 has previously transmitted the response message.
[0098] At 450, the wireless device 410 may perform a transmission of the data message again in response to the additional trigger message. At 455, the reader device 405 may transmit an acknowledgment message in response to the data message.
[0099] At 460, the wireless device 410 may update an operating state based on reception of the acknowledgment message. For example, the wireless device 410 may transition the current operating state to a third state associated with an inventory of the wireless device 410 (e.g., having been completed) . Additionally, or alternatively, the operating state may be updated after a threshold duration has elapsed from reception of the acknowledgment message or transmission of the data message.
[0100] FIG. 5 shows an example of a process flow 500 that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure. The process flow 500 may include a reader device 505 (e.g., a network entity 105, a UE 115) and a wireless device 510 (e.g., an ambient IoT device) , which may be examples of corresponding devices as described herein. Operations of the process flow 500 may be performed in a different order than shown, or some operations may be omitted from or added to the process flow 500.
[0101] At 515, the reader device 505 may transmit a trigger message to the wireless device 510. The trigger message may request a response message from the wireless device 510 and, in some cases, one or more additional wireless devices 510.
[0102] At 520, the wireless device 510 may transmit the response message (e.g., Msg1) responsive to the trigger message. The response message may include information associated with an identifier associated with the wireless device 510 (e.g., a random identifier) , control information, data associated with the wireless device 510 or a combination thereof. In some cases, however, the transmission of the response message to the reader device 405 may be unsuccessful (e.g., due to interference, network conditions) . The wireless device 510 may refrain from updating an operating state of the wireless device 510 based on an absence of a message received form the reader device 505.
[0103] At 525, the reader device 505 may transmit an additional trigger message, which may request the data transmitted by the first trigger message. At 530, the wireless device 510 may perform the transmission of the response message again in response to the additional trigger message.
[0104] At 535, the reader device 505 may transmit a message (e.g., Msg2) to the wireless device 510, and the message may be associated with contention resolution. For example, the message may include (e.g., echo) information associated with the identifier associated with the wireless device 510 or other data. The message may be responsive to the response message and indicate successful reception of the response message by the reader device 505.
[0105] At 540, the wireless device 510 may update an operating state of the wireless device 510. For example, the wireless device 510 may transition a current operating state to a second state associated with a completion of the access procedure based on the successful reception of the response message (e.g., as indicated by the message at 535) . In some examples, the transition of the operating state may occur after a threshold duration has elapsed after reception of the message associated with contention resolution.
[0106] At 545, the wireless device 510 may transmit a data message (e.g., Msg3) to the reader device 505, which may be responsive to the first trigger message or the additional trigger message (e.g., or both) . At 550, the reader device 505 may transmit an acknowledgment message, which may indicate successful reception of the data message transmitted by the wireless device 510.
[0107] At 555, the wireless device 510 may update an operating state based on reception of the acknowledgment message. For example, the wireless device 510 may transition the current operating state to a third state associated with an inventory of the wireless device 510 (e.g., having been completed) . Additionally, or alternatively, the operating state may be updated after a threshold duration has elapsed from reception of the acknowledgment message or transmission of the data message.
[0108] Accordingly, the wireless device 510 may determine whether to transmit messages based on a current state of the wireless device 510, which may improve communication efficiency and reduce communication collisions between wireless devices 510, while reducing processing and power consumption by the reader device 505.
[0109] FIG. 6 shows a block diagram 600 of a device 605 that supports selective message transmission based on an operating state of a wireless device 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) .
[0110] 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 selective message transmission based on an operating state of a wireless device) . 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.
[0111] 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 selective message transmission based on an operating state of a wireless device) . In some examples, 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.
[0112] 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 selective message transmission based on an operating state of a wireless device 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.
[0113] In some examples, 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 examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0114] 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) .
[0115] In some examples, 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, the transmitter 615, or both. 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, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.
[0116] The communications manager 620 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 620 is capable of, configured to, or operable to support a means for receiving a trigger message requesting a response message from one or more wireless devices including the wireless device. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0117] 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 conditional transmission of messages based on an operating state of a wireless device, thereby reducing transmission overhead and resource inefficiency, increasing wireless device battery life, and improving contention between wireless devices.
[0118] FIG. 7 shows a block diagram 700 of a device 705 that supports selective message transmission based on an operating state of a wireless device 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 or 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) .
[0119] 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 selective message transmission based on an operating state of a wireless device) . 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.
[0120] 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 selective message transmission based on an operating state of a wireless device) . In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.
[0121] The device 705, or various components thereof, may be an example of means for performing various aspects of selective message transmission based on an operating state of a wireless device as described herein. For example, the communications manager 720 may include a trigger message manager 725 a response component 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 examples, 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, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.
[0122] The communications manager 720 may support wireless communication in accordance with examples as disclosed herein. The trigger message manager 725 is capable of, configured to, or operable to support a means for receiving a trigger message requesting a response message from one or more wireless devices including the wireless device. The response component 730 is capable of, configured to, or operable to support a means for transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0123] FIG. 8 shows a block diagram 800 of a communications manager 820 that supports selective message transmission based on an operating state of a wireless device 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, a communications manager 720, or both, as described herein. The communications manager 820, or various components thereof, may be an example of means for performing various aspects of selective message transmission based on an operating state of a wireless device as described herein. For example, the communications manager 820 may include a trigger message manager 825, a response component 830, a state manager 835, a contention manager 840, an acknowledgment manager 845, a timer component 850, 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) .
[0124] The communications manager 820 may support wireless communication in accordance with examples as disclosed herein. The trigger message manager 825 is capable of, configured to, or operable to support a means for receiving a trigger message requesting a response message from one or more wireless devices including the wireless device. The response component 830 is capable of, configured to, or operable to support a means for transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0125] In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message including information associated with the identifier based on the current operating state. In some examples, the state manager 835 is capable of, configured to, or operable to support a means for transitioning the current operating state of the wireless device from a first state to a second state based on transmitting the response message, receiving a message associated with contention resolution, an initiation of an access procedure, or any combination thereof.
[0126] In some examples, transitioning the current operating state to the second state is based on a threshold duration having elapsed from transmission of the response message.
[0127] In some examples, the trigger message manager 825 is capable of, configured to, or operable to support a means for receiving a second trigger message. In some examples, the response component 830 is capable of, configured to, or operable to support a means for refraining from transmitting a second response message including information associated with the identifier based on transitioning the current operating state to the second state.
[0128] In some examples, the contention manager 840 is capable of, configured to, or operable to support a means for receiving the message associated with contention resolution. In some examples, the state manager 835 is capable of, configured to, or operable to support a means for transitioning the current operating state of the wireless device from the first state to a second state associated with a completion of an access procedure for the wireless device.
[0129] In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message including control data or payload data associated with the wireless device, where the trigger message requests the data from the wireless device. In some examples, the state manager 835 is capable of, configured to, or operable to support a means for transitioning the current operating state of the wireless device from a first state to a third state based on transmitting the response message, the third state associated with an inventory procedure for the wireless device.
[0130] In some examples, the trigger message manager 825 is capable of, configured to, or operable to support a means for receiving a second trigger message requesting the data from the wireless device. In some examples, the response component 830 is capable of, configured to, or operable to support a means for refraining from transmitting a second response message including the data based on transitioning the current operating state to the third state.
[0131] In some examples, the acknowledgment manager 845 is capable of, configured to, or operable to support a means for receiving, responsive to the response message including the data, an acknowledgment message, where transitioning the current operating state to the third state is in response to the acknowledgment message.
[0132] In some examples, the state manager 835 is capable of, configured to, or operable to support a means for updating a value of the current operating state from a first value to a second value based on transmitting the response message.
[0133] In some examples, the state manager 835 is capable of, configured to, or operable to support a means for receiving a message requesting the wireless device to change operating states. In some examples, the state manager 835 is capable of, configured to, or operable to support a means for updating the value of the current operating state from the second value to the first value in response to the message.
[0134] In some examples, the timer component 850 is capable of, configured to, or operable to support a means for initiating a timer associated with updating the value of the current operating state to the second value. In some examples, the state manager 835 is capable of, configured to, or operable to support a means for updating the current operating state from the second value to the first value based on an expiration of the timer.
[0135] In some examples, the timer component 850 is capable of, configured to, or operable to support a means for initiating or re-initiating the timer in response to receiving a message triggering the wireless device to initiate or re-initiating the timer, determining that a communication quality metric has dropped below a threshold, detecting a new reader device, or a combination thereof.
[0136] In some examples, the state manager 835 is capable of, configured to, or operable to support a means for updating the current operating state from the second value to the first value based on communications with a reader device being dropped, initiating communications with a new reader device, or both.
[0137] In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message based on an identifier associated with the wireless device being included within the trigger message.
[0138] In some examples, the trigger message manager 825 is capable of, configured to, or operable to support a means for postponing a processing associated with the trigger message for a duration based on the current operating state of the wireless device. In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message following the duration.
[0139] In some examples, the trigger message manager 825 is capable of, configured to, or operable to support a means for receiving, prior to transmitting the response message, a second trigger message requesting a response message. In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message in response to the trigger message based on receiving the trigger message prior to the second trigger message or receiving the trigger message after the second trigger message.
[0140] In some examples, the trigger message manager 825 is capable of, configured to, or operable to support a means for receiving a second trigger message, where the trigger message is associated with a first scheduling method and the second trigger message is associated a second scheduling method different from the first scheduling method. In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message in response to the trigger message based on the trigger message being associated with the first scheduling method.
[0141] In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message based on a resource used for reception the trigger message, a resource indicated for transmission of the response message, or both.
[0142] In some examples, the response component 830 is capable of, configured to, or operable to support a means for transmitting the response message based on a buffer of the wireless device being above a threshold capacity or below a threshold capacity.
[0143] FIG. 9 shows a diagram of a system 900 including a device 905 that supports selective message transmission based on an operating state of a wireless device 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) .
[0144] 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.
[0145] 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.
[0146] 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.
[0147] 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 selective message transmission based on an operating state of a wireless device) . 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.
[0148] In some examples, 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 examples, 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.
[0149] The communications manager 920 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for receiving a trigger message requesting a response message from one or more wireless devices including the wireless device. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0150] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 may support techniques for conditional transmission of messages based on an operating state of a wireless device, thereby reducing transmission overhead and resource inefficiency, increasing wireless device battery life, and improving contention between wireless devices.
[0151] In some examples, 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 examples, 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 selective message transmission based on an operating state of a wireless device 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.
[0152] FIG. 10 shows a flowchart illustrating a method 1000 that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure. The operations of the method 1000 may be implemented by a UE or its components as described herein. For example, the operations of the method 1000 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0153] At 1005, the method may include receiving a trigger message requesting a response message from one or more wireless devices including the wireless device. The operations of 1005 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1005 may be performed by a trigger message manager 825 as described with reference to FIG. 8.
[0154] At 1010, the method may include transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof. The operations of 1010 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1010 may be performed by a response component 830 as described with reference to FIG. 8.
[0155] FIG. 11 shows a flowchart illustrating a method 1100 that supports selective message transmission based on an operating state of a wireless device in accordance with one or more aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE or its components as described herein. For example, the operations of the method 1100 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0156] At 1105, the method may include receiving a trigger message requesting a response message from one or more wireless devices including the wireless device. The operations of 1105 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed by a trigger message manager 825 as described with reference to FIG. 8.
[0157] At 1110, the method may include transmitting, responsive to the trigger message, the response message based on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, where the response message includes information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof. The operations of 1110 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1110 may be performed by a response component 830 as described with reference to FIG. 8.
[0158] At 1115, the method may include transmitting the response message including information associated with the identifier based on the current operating state. The operations of 1115 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1115 may be performed by a response component 830 as described with reference to FIG. 8.
[0159] At 1120, the method may include transitioning the current operating state of the wireless device from a first state to a second state based on transmitting the response message, receiving a message associated with contention resolution, an initiation of an access procedure, or any combination thereof. The operations of 1120 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1120 may be performed by a state manager 835 as described with reference to FIG. 8.
[0160] The following provides an overview of aspects of the present disclosure:
[0161] Aspect 1: A method for wireless communication by a wireless device, comprising: receiving a trigger message requesting a response message from one or more wireless devices including the wireless device; and transmitting, responsive to the trigger message, the response message based at least in part on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, wherein the response message comprises information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
[0162] Aspect 2: The method of aspect 1, further comprising: transmitting the response message comprising information associated with the identifier based at least in part on the current operating state; and transitioning the current operating state of the wireless device from a first state to a second state based at least in part on transmitting the response message, receiving a message associated with contention resolution, an initiation of an access procedure, or any combination thereof.
[0163] Aspect 3: The method of aspect 2, wherein transitioning the current operating state to the second state is based at least in part on a threshold duration having elapsed from transmission of the response message.
[0164] Aspect 4: The method of any of aspects 2 through 3, further comprising: receiving a second trigger message; and refraining from transmitting a second response message comprising information associated with the identifier based at least in part on transitioning the current operating state to the second state.
[0165] Aspect 5: The method of any of aspects 2 through 4, further comprising: receiving the message associated with contention resolution; and transitioning the current operating state of the wireless device from the first state to a second state associated with a completion of an access procedure for the wireless device.
[0166] Aspect 6: The method of any of aspects 1 through 5, further comprising: transmitting the response message comprising control data or payload data associated with the wireless device, wherein the trigger message requests the data from the wireless device; and transitioning the current operating state of the wireless device from a first state to a third state based at least in part on transmitting the response message, the third state associated with an inventory procedure for the wireless device.
[0167] Aspect 7: The method of aspect 6, further comprising: receiving a second trigger message requesting the data from the wireless device; and refraining from transmitting a second response message comprising the data based at least in part on transitioning the current operating state to the third state.
[0168] Aspect 8: The method of any of aspects 6 through 7, further comprising: receiving, responsive to the response message comprising the data, an acknowledgment message, wherein transitioning the current operating state to the third state is in response to the acknowledgment message.
[0169] Aspect 9: The method of any of aspects 1 through 8, further comprising: updating a value of the current operating state from a first value to a second value based at least in part on transmitting the response message.
[0170] Aspect 10: The method of aspect 9, further comprising: receiving a message requesting the wireless device to change operating states; and updating the value of the current operating state from the second value to the first value in response to the message.
[0171] Aspect 11: The method of any of aspects 9 through 10, further comprising: initiating a timer associated with updating the value of the current operating state to the second value; and updating the current operating state from the second value to the first value based at least in part on an expiration of the timer.
[0172] Aspect 12: The method of aspect 11, further comprising: initiating or re-initiating the timer in response to receiving a message triggering the wireless device to initiate or re-initiating the timer, determining that a communication quality metric has dropped below a threshold, detecting a new reader device, or a combination thereof.
[0173] Aspect 13: The method of any of aspects 9 through 12, further comprising: updating the current operating state from the second value to the first value based at least in part on communications with a reader device being dropped, initiating communications with a new reader device, or both.
[0174] Aspect 14: The method of any of aspects 1 through 13, further comprising: transmitting the response message based at least in part on an identifier associated with the wireless device being included within the trigger message.
[0175] Aspect 15: The method of any of aspects 1 through 14, further comprising: postponing a processing associated with the trigger message for a duration based at least in part on the current operating state of the wireless device; and transmitting the response message following the duration.
[0176] Aspect 16: The method of any of aspects 1 through 15, further comprising: receiving, prior to transmitting the response message, a second trigger message requesting a response message; and transmitting the response message in response to the trigger message based at least in part on receiving the trigger message prior to the second trigger message or receiving the trigger message after the second trigger message.
[0177] Aspect 17: The method of any of aspects 1 through 16, further comprising: receiving a second trigger message, wherein the trigger message is associated with a first scheduling method and the second trigger message is associated a second scheduling method different from the first scheduling method; and transmitting the response message in response to the trigger message based at least in part on the trigger message being associated with the first scheduling method.
[0178] Aspect 18: The method of any of aspects 1 through 17, further comprising: transmitting the response message based at least in part on a resource used for reception the trigger message, a resource indicated for transmission of the response message, or both.
[0179] Aspect 19: The method of any of aspects 1 through 18, further comprising: transmitting the response message based at least in part on a buffer of the wireless device being above a threshold capacity or below a threshold capacity.
[0180] Aspect 20: A wireless device for wireless communication, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to perform a method of any of aspects 1 through 19.
[0181] Aspect 21: A wireless device for wireless communication, comprising at least one means for performing a method of any of aspects 1 through 19.
[0182] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 19.
[0183] It should be noted that the methods described herein describe possible implementations. 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.
[0184] 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.
[0185] 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.
[0186] 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.
[0187] 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 appended 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.
[0188] 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.
[0189] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0190] 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 “a component” 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 “a component” 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. ”
[0191] 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.
[0192] In the appended 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.
[0193] The description set forth herein, in connection with the appended 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 “example” used herein means “serving as an example, instance, or illustration” and not “preferred” or “advantageous over other examples. ” 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, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0194] 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 wireless device, comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to:receive a trigger message requesting a response message from one or more wireless devices including the wireless device; andtransmit, responsive to the trigger message, the response message based at least in part on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, wherein the response message comprises information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.2.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:transmit the response message comprising information associated with the identifier based at least in part on the current operating state; andtransition the current operating state of the wireless device from a first state to a second state based at least in part on transmitting the response message, receiving a message associated with contention resolution, an initiation of an access procedure, or any combination thereof.3.The wireless device of claim 2, wherein transitioning the current operating state to the second state is based at least in part on a threshold duration having elapsed from transmission of the response message.4.The wireless device of claim 2, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:receive a second trigger message; andrefrain from transmitting a second response message comprising information associated with the identifier based at least in part on transitioning the current operating state to the second state.5.The wireless device of claim 2, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:receive the message associated with contention resolution; andtransition the current operating state of the wireless device from the first state to a second state associated with a completion of an access procedure for the wireless device.6.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:transmit the response message comprising control data or payload data associated with the wireless device, wherein the trigger message requests the data from the wireless device; andtransition the current operating state of the wireless device from a first state to a third state based at least in part on transmitting the response message, the third state associated with an inventory procedure for the wireless device.7.The wireless device of claim 6, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:receive a second trigger message requesting the data from the wireless device; andrefrain from transmitting a second response message comprising the data based at least in part on transitioning the current operating state to the third state.8.The wireless device of claim 6, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:receive, responsive to the response message comprising the data, an acknowledgment message, wherein transitioning the current operating state to the third state is in response to the acknowledgment message.9.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:update a value of the current operating state from a first value to a second value based at least in part on transmitting the response message.10.The wireless device of claim 9, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:receive a message requesting the wireless device to change operating states; andupdate the value of the current operating state from the second value to the first value in response to the message.11.The wireless device of claim 9, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:initiate a timer associated with updating the value of the current operating state to the second value; andupdate the current operating state from the second value to the first value based at least in part on an expiration of the timer.12.The wireless device of claim 11, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:initiate or re-initiate the timer in response to receiving a message triggering the wireless device to initiate or re-initiating the timer, determining that a communication quality metric has dropped below a threshold, detecting a new reader device, or a combination thereof.13.The wireless device of claim 9, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:update the current operating state from the second value to the first value based at least in part on communications with a reader device being dropped, initiating communications with a new reader device, or both.14.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:transmit the response message based at least in part on an identifier associated with the wireless device being included within the trigger message.15.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:postpone a processing associated with the trigger message for a duration based at least in part on the current operating state of the wireless device; andtransmit the response message following the duration.16.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:receive, prior to transmitting the response message, a second trigger message requesting a response message; andtransmit the response message in response to the trigger message based at least in part on receiving the trigger message prior to the second trigger message or receiving the trigger message after the second trigger message.17.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:receive a second trigger message, wherein the trigger message is associated with a first scheduling method and the second trigger message is associated a second scheduling method different from the first scheduling method; andtransmit the response message in response to the trigger message based at least in part on the trigger message being associated with the first scheduling method.18.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:transmit the response message based at least in part on a resource used for reception the trigger message, a resource indicated for transmission of the response message, or both.19.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:transmit the response message based at least in part on a buffer of the wireless device being above a threshold capacity or below a threshold capacity.20.A method for wireless communication by a wireless device, comprising:receiving a trigger message requesting a response message from one or more wireless devices including the wireless device; andtransmitting, responsive to the trigger message, the response message based at least in part on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, wherein the response message comprises information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.21.A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to:receive a trigger message requesting a response message from one or more wireless devices including the wireless device; andtransmit, responsive to the trigger message, the response message based at least in part on a current operating state of the wireless device, a priority of the response message, a buffer status of the wireless device, or any combination thereof, wherein the response message comprises information associated with an identifier associated with the wireless device, control information, data associated with the wireless device, or any combination thereof.
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