Small data transmission techniques in wireless communications

Abstract

Methods, systems, and devices are described for wireless communication in which a user equipment (UE) may establish a connection with a network entity and transition to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained. The UE may determine that one or more parameters associated with the connection satisfy a threshold criterion based on the presence of data for transmission via the connection while in the inactive state, and transmit the data via the connection while in the inactive state. The threshold criterion may be, for example, a cell energy of a serving cell associated with the connection, and the amount of data to be transmitted may be below a size threshold associated with the small data transmission.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. patent application No. 17 / 739,811, entitled “SMALL DATATRANSMISSION TECHNIQUES IN WIRELESS COMMUNICATIONS,” filed by Sheik et al. on May 9, 2022, which is assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following content relates to wireless communications, including small data transmission technology in wireless communications. Background Art

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

[0005] In some cases, a UE may send a relatively small amount of data to another device in one or more transmissions. For example, a UE may send one or more sensor readings, status messages, etc. including a relatively small amount of data to a network entity or another UE. In some cases, the connection overhead associated with such small data transmissions may be significant, which may reduce overall network efficiency. Therefore, efficient techniques for sending relatively small amounts of data may be needed to enhance network efficiency and overall throughput. Summary of the invention

[0006] The described technology relates to improved methods, systems, devices and apparatuses for supporting small data transmission technology in wireless communication. According to various aspects, the described technology provides a user equipment (UE) to establish a connection with a network entity for communication between the network entity and the UE. The UE may transition to an inactive state, in which a security context associated with the connection between the network entity and the UE is maintained. The UE may determine that one or more parameters associated with the connection meet a threshold criterion based on the presence of data sent via the connection when in an inactive state, and send data via the connection when in an inactive state based on one or more parameters meeting the threshold criterion. In some cases, the threshold criterion may be the cell energy of the serving cell associated with the connection. In some cases, the amount of data to be sent may be lower than a size threshold associated with small data transmission (SDT), and the UE may send data based on a transmission based on a random access channel (RACH) or a transmission based on a configuration authorization.

[0007] In some cases, while a connection between the UE and a first cell is in an inactive state, the UE may receive a configuration of periodic resources for data transmission via the connection (e.g., in a configuration grant), and while in the inactive state, may determine that there is a trigger for priority-based cell reselection from the first cell to the second cell. In some cases, the UE may maintain the connection with the first cell based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion, regardless of the trigger for priority-based cell reselection. In some cases, the UE may initiate priority-based cell reselection after data transmission (e.g., SDT) using periodic resources is completed.

[0008] A method for wireless communication at a user equipment (UE) is described. The method may include: establishing a connection with a network entity for communication between the network entity and the UE; transitioning to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained; determining that one or more parameters associated with the connection satisfy a threshold criterion based on the presence of data for sending via the connection while in the inactive state; and sending data via the connection while in the inactive state based on the one or more parameters satisfying the threshold criterion.

[0009] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to perform the following operations: establish a connection with a network entity for communication between the network entity and the UE; transition to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained; determine that one or more parameters associated with the connection meet a threshold criterion based on the presence of data for sending via the connection when in the inactive state; and send data via the connection when in the inactive state based on the one or more parameters meeting the threshold criterion.

[0010] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for establishing a connection with a network entity for communication between the network entity and the UE; means for transitioning to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained; means for determining that one or more parameters associated with the connection meet a threshold criterion based on the presence of data for sending via the connection while in the inactive state; and means for sending data via the connection while in the inactive state based on the one or more parameters meeting the threshold criterion.

[0011] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: establish a connection with a network entity for communication between the network entity and the UE; transition to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained; determine that one or more parameters associated with the connection meet a threshold criterion based on the presence of data for transmission via the connection while in the inactive state; and transmit data via the connection while in the inactive state based on the one or more parameters meeting the threshold criterion.

[0012] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: determining that one or more parameters associated with a connection fail to meet a threshold criterion; and delaying the transmission of data via the connection until the one or more parameters associated with the connection meet the threshold criterion. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the one or more parameters associated with the connection include a serving cell energy value.

[0013] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: determining that a measurement periodicity for measuring one or more parameters associated with a connection is set to provide a shortened period between measurements relative to a regular period between measurements; and delaying the sending of data via the connection until the measurement periodicity is restored to provide a regular period between measurements. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: determining that a neighboring cell search or measurement process is active at the UE; and delaying the sending of data via the connection until the neighboring cell search or measurement process is completed. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: determining that a neighboring cell reselection timer is active at the UE; and delaying the sending of data via the connection until the neighboring cell reselection timer expires.

[0014] Some examples of the methods, devices, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: after initiating the transmission of data via a connection while in an inactive state, determining that a cell reselection process is triggered; and delaying the start of the cell reselection process until the completion of the transmission of data via a connection while in an inactive state. In some examples of the methods, devices, and non-transitory computer-readable media described herein, the search or measurement periodicity for cell reselection may be adjusted based on the expected duration of the transmission of data to delay the start of the cell reselection process. Some examples of the methods, devices, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: monitoring confirmation in response to sending data via a connection; and initiating a cell reselection process while maintaining an inactive state in response to a decoding confirmation failure. Some examples of the methods, devices, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: resuming the transmission of data after the cell reselection process. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an amount of data for sending via a connection while in an inactive state is less than a small data send (SDT) data threshold for sending while in an inactive state.

[0015] A method for wireless communication at a UE is described. The method may include: receiving configuration information of a periodic resource set for sending data via a connection between the UE and a first cell when the connection is in an inactive state; transitioning the connection from an active state to an inactive state; while in the inactive state, determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell; and maintaining the connection with the first cell regardless of the trigger for priority-based cell reselection based on one or more parameters associated with the connection to the first cell satisfying a threshold criterion.

[0016] A device for wireless communication at a UE is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the device to perform the following operations: when a connection between the UE and a first cell is in an inactive state, receive configuration information of a periodic resource set for sending data via the connection; transition the connection from an active state to an inactive state; when in the inactive state, determine that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell; and maintain the connection with the first cell based on one or more parameters associated with the connection to the first cell satisfying a threshold criterion, regardless of the trigger for priority-based cell reselection.

[0017] Another apparatus for wireless communication at a UE is described. The apparatus may include: a component for receiving configuration information of a periodic resource set for sending data via a connection between the UE and a first cell when the connection is in an inactive state; a component for transitioning the connection from an active state to an inactive state; a component for determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell when in the inactive state; and a component for maintaining the connection with the first cell regardless of the trigger for priority-based cell reselection based on one or more parameters associated with the connection to the first cell satisfying a threshold criterion.

[0018] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions that can be executed by a processor to perform the following operations: when a connection between the UE and a first cell is in an inactive state, receive configuration information of a periodic resource set for sending data via the connection; transition the connection from an active state to an inactive state; when in the inactive state, determine that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell; and based on one or more parameters associated with the connection to the first cell satisfying a threshold criterion, maintain the connection with the first cell regardless of the trigger for priority-based cell reselection.

[0019] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the connection with the first cell is maintained in response to a cell energy value associated with the first cell satisfying a threshold criterion. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for initiating priority-based cell reselection to a second cell based on the cell energy value associated with the first cell being below the threshold criterion.

[0020] Some examples of the methods, devices, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: maintaining a periodic resource set for communication via a first cell; and prioritizing the first cell for subsequent cell reselection based on the maintained periodic resource set. Some examples of the methods, devices, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: performing subsequent cell reselection for communication via the first cell; and sending data via a connection with the first cell using periodic resources in the periodic resource set when in an inactive state. Some examples of the methods, devices, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: determining that one or more parameters associated with the first cell meet a threshold criterion based on the presence of data for transmission; and sending data via the first cell when in an inactive state based on one or more parameters meeting the threshold criterion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 An example of a wireless communication system supporting a small data transmission technology in wireless communication according to one or more aspects of the present disclosure is illustrated.

[0022] Figure 2 An example of a wireless communication system supporting a small data transmission technology in wireless communication according to one or more aspects of the present disclosure is illustrated.

[0023] Figure 3 An example of a process flow for supporting small data transmission technology in wireless communications according to one or more aspects of the present disclosure is illustrated.

[0024] Figure 4 An example of a process flow for supporting small data transmission technology in wireless communications according to one or more aspects of the present disclosure is illustrated.

[0025] Figure 5 and Figure 6 A block diagram of a device supporting a small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown.

[0026] Figure 7 A block diagram of a communication manager supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown.

[0027] Figure 8 A diagram of a system including a device supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown.

[0028] Figures 9 to 18 A flow chart illustrating a method for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0029] In some wireless communication systems (such as some fifth generation (5G) or new radio (NR) communication systems), a user equipment (UE) may establish a wireless connection with a network entity that supports data communication between the UE and the network entity. For example, a radio resource control (RRC) connection establishment procedure may be performed to establish or reestablish a connection for the UE at a serving cell of the network. In some cases, the connection may be an active connection for transmitting data to or from the UE via wireless transmission. In the case where data is no longer transmitted via the connection (e.g., when data in data buffers at the UE and the network entity has been transmitted), the UE may transition to an idle state to save power and network resources. In such an idle state, various parameters associated with the connection, such as channel conditions or security contexts associated with the connection, may be released or no longer monitored. In the case where more data is to be transmitted between the UE and the network, the UE may move out of the idle state and perform another connection establishment or reestablishment procedure, which may consume a relatively large amount of time and involve several transmissions that consume network resources. In the case where a relatively small amount of data is to be transmitted, such a process may significantly increase the overhead associated with the transmission.

[0030] To improve network efficiency, in some cases, the UE may transition to an inactive state, in which the UE maintains a security context for the connection (e.g., a packet data convergence layer (PDCP) or a network access layer (NAS) security context) and may perform small data transmission (SDT) using a random access channel (RACH) process or using periodic resources (e.g., configuration grant (CG) resources). The inactive state may allow SDT (e.g., data transmission size less than a threshold) without having to move the UE from idle mode to RRC connected mode, which may take time (e.g., tens or hundreds of milliseconds) and network resources. However, in the event of an SDT interruption, the UE may transition to an idle state, which then requires the UE to reestablish a connection, which may result in a relatively long delay. According to various aspects of the present disclosure, a technique is provided that may allow a UE to reduce the likelihood of transitioning to idle mode during an SDT process.

[0031] In some cases, before initiating SDT, the UE may check whether the energy level of the serving cell with the inactive state connection meets the threshold cell energy. If there is a threshold cell energy, the probability that the SDT process stops and the UE moves to idle is reduced. In some cases, when the search or measurement process is active at the UE, the UE may wait to start the SDT process, which may result in cell reselection, which may cause the UE to transition to idle mode if the cell reselection is initiated during the SDT process. By delaying the start of the SDT process until after the search or measurement process, the UE can maintain an inactive state through potential cell reselection. Additionally or alternatively, once the SDT process has started, the UE may refrain from starting a new search or measurement process before the SDT is completed (e.g., by adjusting the search or measurement periodicity to allow the completion of the SDT process). In other cases, additionally or alternatively, the UE may maintain an inactive state in the event of a failure to decode a random access message (e.g., MSG1 or MSG2) and trigger a cell reselection process. In some cases, the UE may be configured with periodic resources for SDT (e.g., configured granted resources), and if the UE has configured periodic resources for SDT on a first cell, the UE may ignore priority-based cell reselection to a second cell (e.g., priority reselection to a specific cell of a carrier, etc.) unless the channel associated with the first cell has a poor channel condition. In addition, in the case of priority reselection, the UE may maintain the configured periodic resources for the first cell and include the first cell for subsequent priority cell reselection. Note that while the various examples discussed herein are for SDT transmission, the techniques discussed herein may be used in any type of communication where the UE is inactive.

[0032] The techniques as discussed herein may allow a UE to remain in an inactive state in some situations where it would otherwise transition to an idle state. As discussed, in the case where the UE transitions to an idle state, additional overhead may be consumed to establish or re-establish a connection for subsequent data transmission. Thus, the techniques described herein may provide power savings due to reduced connection establishment or re-establishment of communications, improved resource utilization through reduced overhead, and reduced latency due to fewer interruptions in communications when the UE is in an inactive state. Thus, overall network efficiency, latency, reliability, and user experience may be enhanced.

[0033] Various aspects of the present disclosure are first described in the context of wireless communication systems. Various aspects of the present disclosure are further illustrated by and described with reference to process flows, device diagrams, system diagrams, and flow diagrams related to small data transmission technology in wireless communication.

[0034] Figure 1 An example of a wireless communication system 100 supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, a new radio (NR) network, or a network operating according to other systems and radio technologies (including future systems and radio technologies not explicitly mentioned herein).

[0035] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may include devices in different forms or with different capabilities. In different examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, etc. In some examples, the network entities 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UE 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the network entity 105 and the UE 115 may support signal communications according to one or more radio access technologies (RATs).

[0036] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile or both stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be able to communicate with various types of devices (such as Figure 1 Communicate with other UEs 115 or network entities 105) as shown.

[0037] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, the node may be a UE 115. As another example, the 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 node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, computing system, etc. as nodes. For example, disclosure that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from the second node.

[0038] In some examples, the network entities 105 may communicate with the core network 130, or with each other, or both. For example, the network entities 105 may communicate with the core network 130 via one or more backhaul links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, the network entities 105 may communicate with each other on the backhaul links 120 (e.g., according to X2, Xn, or other interface protocols) directly (e.g., directly between the network entities 105) or indirectly (e.g., via the core network 130). In some examples, the network entities 105 may communicate with each other via the midhaul communication link 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication link 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication link 120, the midhaul communication link 162, or the fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), and other examples or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0039] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a transceiver base station, a radio base station, an NR base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next-generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a 5G NB, a next-generation eNB (ng-eNB), a Home Node B, a Home Evolved Node B, or other suitable terms). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, stand-alone) base station architecture, which may be configured to utilize a protocol stack physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140).

[0040] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that may be configured to utilize a protocol stack that is physically or logically distributed between two or more network entities 105, such as an integrated access 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, the network entity 105 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (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) 180 system, or any combination thereof. The 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 transmit receive point (TRP). One or more components of the network entity 105 in the decomposed RAN architecture may be co-located, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of the decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0041] The functional split between CU 160, DU 165, and RU 175 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, and RU 175. For example, a functional split of a protocol stack may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may host higher 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 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack may be employed between the DU 165 and the 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 more different cells (e.g., via one or more RUs 170). In some cases, the functional split between CU 160 and DU 165 or between DU 165 and RU 170 may be within the protocol layer (e.g., some functions of the protocol layer may be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by a different one of CU 160, DU 165, or RU 170). CU 160 may be further functionally split into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and DU 165 may be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented based on interfaces (eg, channels) between layers of a protocol stack supported by respective network entities 105 communicating over those communication links.

[0042] In some wireless communication systems (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). The IAB node 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate according to the techniques described herein.

[0043] For example, an access network (AN) or RAN may include an access node (e.g., an IAB donor), communications between an IAB node 104, and one or more UEs 115. The IAB donor may facilitate connectivity between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). That is, the IAB donor may refer to a RAN node having a wired or wireless connection to the core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170), wherein the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). The IAB donor and the IAB node 104 may communicate via an F1 interface according to a protocol defining a signaling message (e.g., an F1 AP protocol). Additionally or alternatively, CU 160 may communicate with the core network via an interface (which may be an example of a portion of a backhaul link) and may communicate with other CUs 160 (e.g., CU 160 associated with an alternative IAB donor) via an Xn-C interface (which may be an example of a portion of a backhaul link).

[0044] An IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UE 115, wireless self-backhaul capabilities, etc.). DU 165 may act as a distributed scheduling node toward child nodes associated with IAB node 104, and IAB-MT may act as a scheduled node toward a parent node associated with IAB node 104. That is, an IAB donor may be referred to as a parent node that communicates with one or more child nodes (e.g., an IAB donor may relay for UE transmissions through one or more other IAB nodes 104). Additionally or alternatively, depending on the relay chain or configuration of the AN, an IAB node 104 may also be referred to as a parent node or child node of other IAB nodes 104. Therefore, the IAB-MT entity of the IAB node 104 may provide a Uu interface for the child IAB node 104 to receive signaling from the parent IAB node 104 , and a DU interface (eg, DU 165 ) may provide a Uu interface for the parent IAB node 104 to signal the child IAB node 104 or the UE 115 .

[0045] For example, the IAB node 104 may be referred to as a parent node supporting child IAB node communications and as a child node associated with the IAB donor. The IAB donor may include a CU 160 having a wired or wireless connection (e.g., backhaul communication link 120) to the core network 130, and may act as a parent node of the IAB node 104. For example, the DU 165 of the IAB donor may relay transmission to the UE 115 through the IAB node 104, and may directly signal the UE 115 to transmit. The CU 160 of the IAB donor may signal the IAB node 104 that a communication link is established via the F1 interface, and the IAB node 104 may schedule transmission (e.g., transmission relayed from the IAB donor to the UE 115) via the DU 165. That is, data may be relayed to and from the IAB node 104 via signaling on the NR Uu interface of the MT to the IAB node 104. Communications with the IAB node 104 may be scheduled by the DU 165 of the IAB donor, and communications with the IAB node 104 may be scheduled by the DU 165 of the IAB node 104 .

[0046] In the case where the techniques described herein are applied to the context of a decomposed RAN architecture, one or more components of the decomposed RAN architecture may be configured to support the small data transmission techniques in wireless communications as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may be additionally or alternatively performed by one or more components of the decomposed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0047] 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 term, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. 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, UE 115 may include or may be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as electrical appliances or vehicles, meters, etc.

[0048] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as network entities 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1as shown in .

[0049] The UE 115 and the network entity 105 may wirelessly communicate with each other via one or more communication links 125 (e.g., access links) on one or more carriers. The term "carrier" may refer to a set of RF spectrum resources having a defined physical layer structure to support the communication link 125. For example, a carrier for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between these devices and any part (e.g., entity, sub-entity) of the network entity 105. For example, the terms "send", "receive", or "communicate" when referring to the network entity 105 may refer to any part of the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0050] The signal waveform sent on the carrier may include 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 using MCM technology, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and the subcarrier spacing may be inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), so that the more resource elements a device receives and the higher the order of the modulation scheme, the higher the data rate of the device may be. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers, beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0051] The time interval for the network entity 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, a sampling period T s =1 / (Δfmax ·N f ) seconds, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals of the communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0052] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a certain number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a certain number of symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, a time slot may be further divided into a plurality of mini time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0053] A subframe, a time slot, a mini-time slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0054] Physical channels may be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed on a downlink carrier using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a set of symbol periods and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more UEs in UE 115 may monitor or search a control region to obtain control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coding information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to a plurality of UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0055] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0056] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may allow automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a network entity 105 (e.g., base station 140) without human intervention. In some examples, M2M communication or MTC may include communication from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, field survival monitoring, weather and geographic event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0057] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private 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.

[0058] In some examples, a UE 115 may be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 in a group that are performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured or scheduled by the network entity 105. In some examples, one or more UEs 115 in such a group may be outside of the coverage area 110 of the network entity 105, or may otherwise be unable or not configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, the network entity 105 may facilitate scheduling resources for D2D communication. In some other examples, D2D communications may be performed between UEs 115 without involving network entity 105 .

[0059] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these items. The vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units), or communicate with the network using vehicle-to-network (V2N) communication via one or more network nodes (e.g., network entity 105, base station 140, RU 170), or both.

[0060] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity for managing access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity for routing packets or interconnecting to an external network (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 of UE 115 served by a network entity 105 (e.g., a base station 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to an IP service 150 for one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0061] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength range is approximately one decimeter to one meter. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves may be sufficient to penetrate structures so that macro cells provide services to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using smaller frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0062] The wireless communication system 100 can utilize licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 can use licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed RF spectrum band, devices such as the network entity 105 and the UE 115 can use carrier sensing for conflict detection and avoidance. In some examples, operations in unlicensed bands can be based on carrier aggregation configuration (e.g., LAA) in combination with component carriers operating in licensed bands. Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and the like.

[0063] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas, which can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of the network entity 105 or UE 115 may be located in one or more antenna arrays or antenna panels, which can 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, the antennas or antenna arrays associated with the network entity 105 may be located at different geographical locations. The network entity 105 may have an antenna array having antenna ports of a set of rows and columns that the network entity 105 can use to support beamforming for communication with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals sent via the antenna ports.

[0064] 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 direct 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 signals conveyed via antenna elements of an antenna array so that some signals propagating in a particular direction relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of these antenna elements may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other direction).

[0065] The wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication of the bearer or PDCP layer can be IP-based. The RLC layer can perform packet segmentation and reorganization to communicate on the logical channel. The MAC layer can perform priority processing and multiplexing of logical channels into transport channels. The MAC layer can also use error detection technology, error correction technology, or both to support retransmission at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer can provide the establishment, configuration and maintenance of the RRC connection of the radio bearer that supports user plane data between the UE 115 and the network entity 105 or the core network 130. At the PHY layer, the transport channel can be mapped to the physical channel.

[0066] UE 115 and network entity 105 may support retransmission of data to increase the likelihood of successful reception of data. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood of correctly receiving data through a communication link (e.g., communication link 125, D2D communication link 135). HARQ may include a combination of 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 under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support simultaneous slot HARQ feedback, wherein the device may provide HARQ feedback in a specific time slot for data received in a previous symbol in the time slot. In some other examples, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0067] In some cases, the UE 115 and the network entity 105 may establish a connection for communication, and the UE 115 may transition to an inactive state in which a security context associated with the connection between the network entity 105 and the UE 115 is maintained. The UE 115 may determine that one or more parameters associated with the connection meet a threshold criterion based on the presence of data for transmission via the connection when in the inactive state, and transmit data via the connection when in the inactive state based on the one or more parameters meeting the threshold criterion. In some cases, the threshold criterion may be a cell energy of a serving cell associated with the connection. In some cases, the amount of data to be transmitted may be below a size threshold associated with the SDT, and the UE 115 may transmit the data according to a RACH-based transmission or a configuration grant-based transmission. Additionally or alternatively, when the connection between the UE 115 and the first cell is in the inactive state, the UE 115 may receive a configuration of periodic resources for data transmission via the connection (e.g., in a configuration grant), and when in the inactive state, it may be determined that there is a trigger for priority-based cell reselection from the first cell to the second cell. In some cases, UE 115 may maintain a connection with the first cell based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion, regardless of a trigger for priority-based cell reselection. In some cases, UE 115 may initiate priority-based cell reselection after a data transmission (e.g., SDT) using periodic resources is completed.

[0068] Figure 2An example of a wireless communication system 200 supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is illustrated. The wireless communication system 200 may include a network entity 105-a and a UE 115-a, which may be represented as shown in FIG. Figure 1 1 and 115. In this example, the UE 115-a may communicate with the network entity 105-a within the coverage area 110-a via a downlink carrier 205 and an uplink carrier 210 (which may be different carriers operating using FDD, or the same carrier operating using TDD, for example).

[0069] In some cases, the network entity 105-a may provide configuration information 215 to the UE 115-a that configures small data transmission from the UE 115-a to the network entity 105-a. In some cases, the configuration information 215 may be sent as part of an RRC configuration or reconfiguration process and may enable the UE 115-a to perform data transmission (e.g., SDT transmission 225) for relatively infrequent and small data while in an inactive state (e.g., and RRC inactive state) without requiring the UE 115-a to transition to a connected state (e.g., RRC connected state) with the network entity 105-a. In some cases, data transmission while in the inactive state may be performed via RAC-based data transmission or periodic resource (e.g., configuration grant)-based data transmission, which may enable data transmission with reduced signaling overhead to reduce physical resource usage associated with such transmission. In some cases, if UE 115-a is in an inactive state and a small amount of data is to be transmitted in SDT transmission 225, UE 115-a may send SDT transmission 225 without transitioning to an active state. However, in the event that SDT transmission 225 is interrupted and not completed (e.g., due to radio link failure (RLF), handover of UE 115-a to a different serving cell, etc.), UE 115-a may transition to idle mode and will reestablish a connection before performing further data transmissions. Such a situation may result in increased overhead, additional transmissions associated with connection reestablishment and associated power consumption, and increased latency compared to a situation where UE 115-a can complete data transmissions while remaining in an inactive state.

[0070] According to the techniques discussed herein, the likelihood of SDT transmission 225 interruption can be reduced, and thus the likelihood of UE 115-a transitioning to an idle state can also be reduced. In some cases, UE 115-a can measure one or more reference signals 220 from network entity 105-a, and can perform a process of sending SDT transmission 225 when one or more channel conditions meet a threshold. In some cases, UE 115-a can measure cell energy based on one or more reference signals 220 before SDT transmission 225. If the current serving cell energy value is below a threshold (e.g., a threshold that can be configured in configuration information 215, or otherwise provided to or signaled to UE 115-a), UE 115-a can delay SDT transmission 225, which can allow channel conditions to improve or allow a cell reselection process to be performed. In some cases, UE 115-a can maintain an inactive state through a cell reselection process, and thus once the process is completed, UE 115-a can send SDT transmission 225 while in inactive mode. In some cases, the UE 115-a may be in a mode that measures channel conditions at an increased frequency relative to a regular measurement periodicity (e.g., the UE 115-a may be in an emergency mode in which increased channel measurements may be made to ensure that the current beam or serving cell provides adequate communication reliability, or to facilitate beam switching or serving cell reselection that provides better communication reliability). In some cases, the UE 115-a may refrain from sending the SDT transmission 225 while in a mode with such increased channel measurements. Such techniques may reduce the likelihood that the SDT transmission 225 is interrupted and the UE 115-a transitions to an idle mode.

[0071] In some cases, the UE 115-a may perform an SDT transmission 225 based on whether the UE 115-a has an active neighbor cell search or measurement procedure. In such cases, the neighbor cell search or measurement procedure may result in a change in the serving cell of the UE 115-a, and if such a change occurs during the SDT transmission 225, the UE 115-a may transition to idle mode. In the event that the UE 115-a determines that there is no current neighbor cell search or measurement procedure in progress, the UE 115-a may proceed with the SDT transmission 225. The neighbor cell search or measurement procedure (e.g., Srch / Meas is in progress on any configured neighbor cell, and an active reselection timer (T resel )) is in progress, UE 115-a may delay SDT sending 225.

[0072] In some cases, the UE 115-a may avoid priority-based cell reselection during the SDT transmission 225 when in an inactive state. For example, for one or more neighboring cells (e.g., configurable by the network entity 105-a), the UE 115-a may avoid priority-based reselection in an inactive state when the SDT transmission 225 process is active. In some cases, when the SDT transmission 225 process is active, the UE 115-a may increase the time between neighboring cell search or measurement processes (e.g., by adjusting the Srch / Meas periodicity of the neighboring cells configured at the UE 115-a). Such adjustments may allow the UE 115-a to avoid reselection during the SDT transmission 225 process. After the SDT transmission 225 is completed, the UE 115-a may perform the search or measurement process, or reset the associated timer or periodicity back to a pre-adjusted or rule value. For example, the network entity 105-a may be configured with a first serving cell for communication, and there may be a neighboring cell that meets the criteria for reselection from the first serving cell to the neighboring cell. In such a case, upon identifying that there is data for the SDT transmission 225, the UE may adjust the neighboring cell search or measurement process periodicity (e.g., by changing the measurement from once during each discontinuous reception (DRX) cycle to once every two DRX cycles or some other multiple of DRX cycles) to avoid initiating a neighboring cell search or measurement process before completing the SDT transmission 225. Such techniques may reduce the likelihood that the UE 115-a transitions to an idle mode during the SDT transmission 225 (e.g., due to a cell reselection process being triggered), and may therefore reduce the latency associated with an interrupted SDT transmission 225. Once the SDT transmission 225 process is complete, the UE 115-a may adjust the neighboring cell search or measurement process back to a regular or pre-adjusted value (e.g., once for each DRX cycle).

[0073] In some cases, additionally or alternatively, in the event that the SDT transmission 225 is interrupted (e.g., in the event that decoding of a RACH message associated with the SDT transmission 225 fails), the UE 115-a may move back to an inactive state and trigger cell selection to a better cell, rather than transitioning to idle mode, after which the UE 115-a may resume the SDT transmission 225.

[0074] In other cases, the UE 115-a may be configured with periodic resources (e.g., CG resources) that can be used for one or more SDT transmissions 225. In such cases, the periodic resources may be valid for a specific cell (such as a first cell) in which the UE 115-a enters an inactive state. When cell reselection is triggered and the UE 115-a moves to a second cell, such periodic resources for the first cell may no longer be valid. In order to reduce the likelihood that such periodic resources are invalid, in some cases, the periodic resources may be maintained even if the UE 115-a moves out of the first cell due to the measured cell energy being below a threshold, and the first cell may be prioritized in the priority cell reselection process. Therefore, in the case of priority cell reselection when the UE 115-a is using the second cell, the first cell may have an increased priority and a higher likelihood of selection, so that the previously configured periodic resources may be used. In some cases, the periodic resources may be maintained at the first cell for a configurable time period after cell reselection to the second cell before being released by the UE 115-a and the network entity 105-a.

[0075] In addition, in some cases, to maintain authorization of periodic resources at the first cell, if one or more measurement parameters associated with the first cell meet a threshold criterion (e.g., the cell energy of the first cell meets a cell energy threshold), UE 115-a may maintain connection with the first cell even when a priority-based cell reselection process (e.g., a process for switching to a priority second cell if the reselection criterion is met) is triggered. Thus, in such cases, if one or more channel parameters associated with the first cell meet the threshold criterion, UE 115-a may maintain connection with the first cell regardless of the triggering of the priority-based cell selection. Such techniques may allow authorized periodic resources to be maintained for SDT transmissions 225, which may help improve the efficiency of communications, as well as help reduce latency associated with SDT transmissions 225.

[0076] Figure 3 An example of a process flow 300 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is illustrated. The process flow 300 may include reference Figure 1 and Figure 2 For example, process flow 300 may illustrate communication between UE 115-b and network entity 105-b, which may be reference Figure 1 and Figure 2Examples of corresponding devices described. The following alternative examples can be implemented, where some of the steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below, or further steps may be added.

[0077] At 305, the network entity 105-b and the UE 115-b may establish a connection for communication. In some cases, the connection establishment may be performed according to a connection establishment technique for the wireless communication system (e.g., via an RRC connection establishment or re-establishment procedure). In some cases, the connection establishment procedure may provide a security context (e.g., a PDCP security context, a NAS security context, etc.) for secure communications between the UE 115-b and the network entity 105-b.

[0078] At 310, the network entity 105-b may send configuration information to the UE 115-b. The configuration information may include, for example, configuration for data transmission by the UE 115-b when in an inactive mode. In some cases, the configuration information may include one or more parameter thresholds (e.g., a cell energy parameter threshold, a reference signal received power (RSRP) threshold, a reference signal received quality (RSRQ) threshold, a signal to interference and noise ratio (SINR) value, or any combination thereof) for performing a data transmission process when in an inactive state. For example, the configuration information may be provided in RRC signaling (e.g., as part of a connection establishment process or separately from a connection establishment process).

[0079] At 315, UE 115-b may transition to an inactive state. In some cases, the transition to the inactive state may occur after a data buffer has no data to be transmitted to or from UE 115-b. In some cases, when UE 115-b transitions to the inactive state, UE 115-b and network entity 105-b may maintain a security context for the connection.

[0080] At 320, the network entity 105-b may transmit one or more reference signals that may be used for channel measurement at one or more UEs. At 325, the UE 115-b may perform channel measurement based on the reference signals. Such reference signals may include any signal that may be measured to assess a channel for wireless communication to the UE 115-b, such as a channel state information (CSI) reference signal, a demodulation reference signal (DMRS), a phase tracking reference signal, a synchronization signal, or any combination thereof.

[0081] At 330, the UE 115-b may identify data to be transmitted while in an inactive mode (e.g., SDT data). In some cases, the data may be identified based on an amount of data being below a threshold data size for transmission while in an inactive state. In some cases, when a RACH-based SDT is configured, the threshold data size may be associated with a payload that may be included in one or more RACH transmissions (e.g., a RACH MSG1 or MSG2 transmission that may include a payload for the SDT). In other cases, the threshold data size may be associated with an amount of resources provided in a configured periodic resource (e.g., a CG resource) for the SDT transmission. At 335, in the event that the channel measurement is below a threshold, the UE 115-b may identify that the connection parameters do not meet the threshold criteria for data transmission while in an inactive mode. In such a case, at 340, the network entity 105-b may send one or more other reference signal transmissions (e.g., based on a reference signal transmission periodicity) that may be measured by the UE 115-b at 345. In some cases, if other channel measurements are relatively poor, or if a neighboring cell is measured to have better channel parameters than the channel parameters of the current serving cell, UE 115-b may trigger a cell reselection process to reselect to a cell with better channel quality. In some cases, the inactive mode at UE 115-b may persist during such cell reselection.

[0082] At 350, the UE 115-b may determine that one or more measured connection parameters satisfy a threshold. As discussed herein, in some cases, the measured connection parameters may include cell energy, and the UE 115-b may refrain from initiating a data transmission while in an inactive state if the cell energy is below the threshold. At 355, based on one or more measured connection parameters satisfying the threshold, the UE 115-b may send data (e.g., in an SDT) to the network entity 105-b. In some cases, the transmission may be a RACH-based SDT, and the UE 115-b may receive a network-based response as a contention-based acknowledgment that confirms successful receipt of the data transmission. In some cases, as discussed herein, in the event that the UE 115-b does not receive such a contention-based acknowledgment, the UE may maintain an inactive state and may trigger cell reselection rather than transitioning to idle mode.

[0083] Figure 4 An example of a process flow 400 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is illustrated. The process flow 400 may include reference Figures 1 to 3For example, process flow 400 may illustrate communication between UE 115-c and network entity 105-c, which may be reference Figures 1 to 3 Examples of corresponding devices described. The following alternative examples can be implemented, where some of the steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below, or further steps may be added.

[0084] At 405, the network entity 105-c and the UE 115-c may establish a connection for communication. In some cases, the connection establishment may be performed according to a connection establishment technique for the wireless communication system (e.g., via an RRC connection establishment or re-establishment procedure). In some cases, the connection establishment procedure may provide a security context (e.g., a PDCP security context, a NAS security context, etc.) for secure communications between the UE 115-c and the network entity 105-c.

[0085] At 410, the network entity 105-c may provide a periodic uplink resource configuration. In some cases, the periodic uplink resource configuration may provide resources (e.g., configure granted resources) for uplink transmissions of data from the UE 115-c while in the RRC inactive mode. In some cases, the periodic uplink resources may be shared among multiple UEs, and the UE 115-c may scramble the uplink transmissions based on an identity, which may allow the uplink transmissions to be unambiguously identified as being associated with the UE 115-c.

[0086] At 415, the network entity 105-c may send configuration information to the UE 115-c. The configuration information may include, for example, configuration for data transmission by the UE 115-c while in an inactive mode. In some cases, the configuration information may include one or more parameter thresholds (e.g., a cell energy parameter threshold, a reference signal received power (RSRP) threshold, a reference signal received quality (RSRQ) threshold, a signal to interference and noise ratio (SINR) value, or any combination thereof) for performing a data transmission process while in an inactive state. Additionally or alternatively, the configuration information may include a parameter value for maintaining a connection with a cell associated with a configured periodic uplink resource even in the event of a priority-based cell reselection trigger associated with a different cell having a reselection priority, as discussed herein. For example, the configuration information may be provided in RRC signaling (e.g., as part of a connection establishment process or separately from a connection establishment process).

[0087] At 420, the UE 115-c may transition to an inactive state. In some cases, the transition to the inactive state may occur after a data buffer is free of data to be transmitted to or from the UE 115-c. In some cases, when the UE 115-c transitions to the inactive state, the UE 115-c and the network entity 105-c may maintain a security context for the connection.

[0088] At 425, the network entity 105-c may transmit one or more reference signals that may be used for channel measurement at one or more UEs. At 430, the UE 115-c may perform channel measurement based on the reference signals. Such reference signals may include any signal that may be measured to assess a channel that exists for wireless communication of the UE 115-c, such as a CSI reference signal, a DMRS, a phase tracking reference signal, a synchronization signal, or any combination thereof.

[0089] At 435, the UE 115-c may identify the presence of a priority-based reselection trigger. In some cases, the priority-based reselection trigger may be triggered based on a reselection timer associated with a serving cell having a higher reselection priority than other serving cells. At 440, the UE 115-c may maintain a connection with an existing serving cell configured with periodic uplink resources based on the existing serving cell having a channel measurement of the network entity 105-c that meets a threshold criterion (e.g., based on a configuration parameter value provided with configuration information from the network entity 105-c).

[0090] At 445, the UE 115-c may identify data (e.g., SDT data) to be transmitted while in the inactive mode and may send the data to the network entity 105-c using uplink resources in the configured periodic uplink resources. In some cases, the data may be identified based on an amount of data being below a threshold data size for transmission while in the inactive state. In some cases, the threshold data size may be associated with a payload that may be included in one or more configured periodic resources for SDT transmissions.

[0091] Optionally, at 450, the network entity 105-c may transmit one or more other reference signal transmissions (e.g., according to a reference signal transmission periodicity) that may be measured by the UE 115-c at 455. In some cases, if the other channel measurements do not satisfy the threshold criteria, the UE 115-c may initiate priority-based cell reselection at 460. In some cases, the UE 115-c and the network entity 105-c may maintain the configured periodic uplink resources, and the UE 115-c may prioritize cells associated with the configured periodic uplink resources in subsequent cell reselection procedures.

[0092] Figure 5 A block diagram 500 of a device 505 supporting small data transmission techniques in wireless communications according to one or more aspects of the present disclosure is shown. The device 505 may be an example of aspects of the UE 115 as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communication manager 520. The device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0093] The receiver 510 may provide 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 small data transmission techniques in wireless communications). The information may be delivered to other components of the device 505. The receiver 510 may utilize a single antenna or a collection of multiple antennas.

[0094] The transmitter 515 may provide means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information associated with various information channels (e.g., control channels, data channels, information channels related to small data transmission techniques in wireless communications) (such as packets, user data, control information, or any combination thereof). In some examples, the transmitter 515 may be co-located with the receiver 510 in a transceiver module. The transmitter 515 may utilize a single antenna or a collection of multiple antennas.

[0095] The communication manager 520, the receiver 510, the transmitter 515, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the small data transmission techniques in wireless communications as described herein. For example, the communication manager 520, the receiver 510, the transmitter 515, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0096] In some examples, the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include 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 components, discrete hardware components, or any combination thereof, which is configured to or otherwise supports components for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0097] Additionally or alternatively, in some examples, the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 520, the receiver 510, the transmitter 515, 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 or otherwise supported to perform the functions described in the present disclosure).

[0098] In some examples, communication manager 520 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 510, transmitter 515, or both. For example, communication manager 520 may receive information from receiver 510, transmit information to transmitter 515, or be integrated with receiver 510, transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.

[0099] According to examples as disclosed herein, the communication manager 520 may support wireless communications at the UE. For example, the communication manager 520 may be configured to or otherwise support components for establishing a connection with a network entity for communication between the network entity and the UE. The communication manager 520 may be configured to or otherwise support components for transitioning to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained. The communication manager 520 may be configured to or otherwise support components for determining that one or more parameters associated with the connection meet a threshold criterion based on the presence of data for sending via the connection when in the inactive state. The communication manager 520 may be configured to or otherwise support components for sending data via the connection when in the inactive state based on one or more parameters meeting a threshold criterion.

[0100] Additionally or alternatively, according to examples as disclosed herein, the communication manager 520 may support wireless communications at the UE. For example, the communication manager 520 may be configured to or otherwise support a component for receiving configuration information of a periodic resource set for sending data via a connection when the connection between the UE and the first cell is in an inactive state. The communication manager 520 may be configured to or otherwise support a component for transitioning the connection from an active state to an inactive state. The communication manager 520 may be configured to or otherwise support a component for determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell when in an inactive state. The communication manager 520 may be configured to or otherwise support a component for maintaining a connection with the first cell regardless of a trigger for priority-based cell reselection based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion.

[0101] By including or configuring a communication manager 520 according to examples as described herein, the device 505 (e.g., a processor that controls or is otherwise coupled to the receiver 510, the transmitter 515, the communication manager 520, or a combination thereof) may support techniques that allow a UE to remain in an inactive state in some situations where it would otherwise transition to an idle state. Such techniques may provide power savings due to reduced connection establishment or re-establishment of communications, improved resource utilization through reduced overhead, and reduced latency due to fewer interruptions in communications when the UE is in an inactive state. Thus, overall network efficiency, latency, reliability, and user experience may be enhanced.

[0102] Figure 6 A block diagram 600 of a device 605 supporting small data transmission techniques in wireless communications according to one or more aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505 or UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0103] The receiver 610 may provide 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 small data transmission techniques in wireless communications). The information may be delivered to other components of the device 605. The receiver 610 may utilize a single antenna or a collection of multiple antennas.

[0104] The transmitter 615 may provide means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information associated with various information channels (e.g., control channels, data channels, information channels related to small data transmission techniques in wireless communications) (such as packets, user data, control information, or any combination thereof). In some examples, the transmitter 615 may be co-located with the receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0105] Device 605 or its various components may be examples of components for performing various aspects of small data transmission technology in wireless communication as described herein. For example, communication manager 620 may include connection manager 625, inactive state manager 630, SDT manager 635, configuration authorization manager 640, cell reselection manager 645, or any combination thereof. Communication manager 620 may be an example of various aspects of communication manager 520 as described herein. In some examples, communication manager 620 or its various components may be configured to use or otherwise cooperate with receiver 610, transmitter 615, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, communication manager 620 may receive information from receiver 610, transmit information to transmitter 615, or integrate with receiver 610, transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0106] According to examples as disclosed herein, the communication manager 620 may support wireless communications at the UE. The connection manager 625 may be configured to or otherwise support components for establishing a connection with a network entity for communication between the network entity and the UE. The inactive state manager 630 may be configured to or otherwise support components for transitioning to an inactive state in which a security context associated with a connection between the network entity and the UE is maintained. The SDT manager 635 may be configured to or otherwise support components for determining that one or more parameters associated with a connection meet threshold criteria based on the presence of data sent via the connection when in the inactive state. The SDT manager 635 may be configured to or otherwise support components for sending data via a connection when in the inactive state based on one or more parameters meeting threshold criteria.

[0107] Additionally or alternatively, the communication manager 620 may support wireless communication at the UE according to the examples disclosed herein. The configuration authorization manager 640 may be configured to or otherwise support a component for receiving configuration information of a periodic resource set for sending data via the connection when the connection between the UE and the first cell is in an inactive state. The inactive state manager 630 may be configured to or otherwise support a component for transitioning the connection from an active state to an inactive state. The cell reselection manager 645 may be configured to or otherwise support a component for determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell when in an inactive state. The cell reselection manager 645 may be configured to or otherwise support a component for maintaining the connection with the first cell regardless of the trigger for priority-based cell reselection based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion.

[0108] Figure 7 A block diagram 700 of a communication manager 720 supporting small data transmission techniques in wireless communications according to one or more aspects of the present disclosure is shown. The communication manager 720 may be an example of aspects of the communication manager 520, the communication manager 620, or both as described herein. The communication manager 720 or its various components may be examples of components for performing various aspects of the small data transmission techniques in wireless communications as described herein. For example, the communication manager 720 may include a connection manager 725, an inactive state manager 730, an SDT manager 735, a configuration authorization manager 740, a cell reselection manager 745, a measurement periodicity manager 750, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0109] According to examples as disclosed herein, the communication manager 720 may support wireless communications at the UE. The connection manager 725 may be configured to or otherwise support components for establishing a connection with a network entity for communication between the network entity and the UE. The inactive state manager 730 may be configured to or otherwise support components for transitioning to an inactive state in which a security context associated with a connection between the network entity and the UE is maintained. The SDT manager 735 may be configured to or otherwise support components for determining that one or more parameters associated with a connection meet a threshold criterion based on the presence of data for sending via the connection when in the inactive state. In some examples, the SDT manager 735 may be configured to or otherwise support components for sending data via a connection when in the inactive state based on one or more parameters meeting a threshold criterion.

[0110] In some examples, the SDT manager 735 may be configured or otherwise support components for determining that one or more parameters associated with a connection fail to meet a threshold criterion. In some examples, the SDT manager 735 may be configured or otherwise support components for delaying the transmission of data via the connection until one or more parameters associated with the connection meet a threshold criterion. In some examples, the one or more parameters associated with the connection include a serving cell energy value.

[0111] In some examples, the measurement periodicity manager 750 may be configured to or otherwise support components for determining that a measurement periodicity for measuring one or more parameters associated with a connection is set to provide a shortened period between measurements relative to a regular period between measurements. In some examples, the measurement periodicity manager 750 may be configured to or otherwise support components for delaying the sending of data via the connection until the measurement periodicity is restored to provide a regular period between measurements. In some examples, the cell reselection manager 745 may be configured to or otherwise support components for determining that a neighboring cell search or measurement procedure is active at the UE. In some examples, the cell reselection manager 745 may be configured to or otherwise support components for delaying the sending of data via the connection until the neighboring cell search or measurement procedure is completed.

[0112] In some examples, the cell reselection manager 745 may be configured to or otherwise support components for determining that a neighboring cell reselection timer is active at the UE. In some examples, the cell reselection manager 745 may be configured to or otherwise support components for delaying the transmission of data via a connection until the neighboring cell reselection timer expires. In some examples, the cell reselection manager 745 may be configured to or otherwise support components for determining that a cell reselection process is triggered after initiating the transmission of data via a connection while in an inactive state. In some examples, the cell reselection manager 745 may be configured to or otherwise support components for delaying the start of a cell reselection process until the completion of the transmission of data via a connection while in an inactive state. In some examples, the search or measurement periodicity for cell reselection is adjusted based on the expected duration of the transmission of data to delay the start of the cell reselection process.

[0113] In some examples, the cell reselection manager 745 may be configured or otherwise support components for monitoring confirmation in response to sending data via the connection. In some examples, the cell reselection manager 745 may be configured or otherwise support components for initiating a cell reselection process while maintaining an inactive state in response to a decoding confirmation failure. In some examples, the SDT manager 735 may be configured or otherwise support components for resuming the transmission of data after the cell reselection process. In some examples, the amount of data for transmission via the connection while in the inactive state is less than a data threshold for small data transmission (SDT) for transmission while in the inactive state.

[0114] Additionally or alternatively, according to examples as disclosed herein, the communication manager 720 may support wireless communications at the UE. The configuration authorization manager 740 may be configured to or otherwise support a component for receiving configuration information of a periodic resource set for sending data via the connection when the connection between the UE and the first cell is in an inactive state. In some examples, the inactive state manager 730 may be configured to or otherwise support a component for transitioning the connection from an active state to an inactive state. The cell reselection manager 745 may be configured to or otherwise support a component for determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell when in an inactive state. In some examples, the cell reselection manager 745 may be configured to or otherwise support a component for maintaining the connection with the first cell regardless of the trigger for priority-based cell reselection based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion.

[0115] In some examples, the connection with the first cell is maintained in response to a cell energy value associated with the first cell satisfying a threshold criterion.

[0116] In some examples, the cell reselection manager 745 may be configured or otherwise support components for initiating priority-based cell reselection to the second cell based on a cell energy value associated with the first cell being below a threshold criterion. In some examples, the configuration grant manager 740 may be configured or otherwise support components for maintaining a periodic set of resources for communication via the first cell. In some examples, the configuration grant manager 740 may be configured or otherwise support components for prioritizing the first cell for subsequent cell reselection based on the maintained periodic set of resources.

[0117] In some examples, the cell reselection manager 745 may be configured to or otherwise support components for performing subsequent cell reselection for communication via the first cell. In some examples, the SDT manager 735 may be configured to or otherwise support components for sending data via a connection with the first cell using periodic resources in a periodic resource set while in an inactive state. In some examples, the SDT manager 735 may be configured to or otherwise support components for determining that one or more parameters associated with the first cell meet a threshold criterion based on the presence of data for transmission. In some examples, the SDT manager 735 may be configured to or otherwise support components for sending data via the first cell while in an inactive state based on one or more parameters meeting a threshold criterion.

[0118] Figure 8 A diagram of a system 800 including a device 805 supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The device 805 may be an example of a device 505, a device 605, or a UE 115 as described herein or include components of these devices. The device 805 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). The device 805 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 820, an input / output (I / O) controller 810, a transceiver 815, an antenna 825, a memory 830, a code 835, and a processor 840. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 845).

[0119] I / O controller 810 can manage input and output signals for device 805. I / O controller 810 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 810 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 810 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 810 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 810 may be implemented as part of a processor (such as processor 840). In some cases, a user may interact with device 805 via I / O controller 810 or via hardware components controlled by I / O controller 810.

[0120] In some cases, the device 805 may include a single antenna 825. However, in some other cases, the device 805 may have more than one antenna 825, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bidirectionally via one or more antennas 825, a wired or wireless link, as described herein. For example, the transceiver 815 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 815 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 825 for transmission; and demodulating packets received from one or more antennas 825. The transceiver 815 or the transceiver 815 and one or more antennas 825 may be examples of transmitters 515, transmitters 615, receivers 510, receivers 610, or any combination thereof or components thereof as described herein.

[0121] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code 835 including instructions that, when executed by the processor 840, cause the device 805 to perform various functions described herein. The code 835 may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some cases, the code 835 may not be directly executable by the processor 840, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 830 may include a basic I / O system (BIOS), etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0122] The processor 840 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 840 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 830) to enable the device 805 to perform various functions (e.g., functions or tasks that support small data transmission technology in wireless communications). For example, the device 805 or a component of the device 805 may include a processor 840 and a memory 830 coupled to or coupled to the processor 840, and the processor 840 and the memory 830 are configured to perform the various functions described herein.

[0123] According to examples as disclosed herein, the communication manager 820 may support wireless communications at the UE. For example, the communication manager 820 may be configured to or otherwise support components for establishing a connection with a network entity for communication between the network entity and the UE. The communication manager 820 may be configured to or otherwise support components for transitioning to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained. The communication manager 820 may be configured to or otherwise support components for determining that one or more parameters associated with the connection meet threshold criteria based on the presence of data sent via the connection when in the inactive state. The communication manager 820 may be configured to or otherwise support components for sending data via the connection when in the inactive state based on one or more parameters meeting threshold criteria.

[0124] Additionally or alternatively, according to examples as disclosed herein, the communication manager 820 may support wireless communications at the UE. For example, the communication manager 820 may be configured to or otherwise support a component for receiving configuration information of a periodic resource set for sending data via a connection when the connection between the UE and the first cell is in an inactive state. The communication manager 820 may be configured to or otherwise support a component for transitioning the connection from an active state to an inactive state. The communication manager 820 may be configured to or otherwise support a component for determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell when in an inactive state. The communication manager 820 may be configured to or otherwise support a component for maintaining a connection with the first cell regardless of a trigger for priority-based cell reselection based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion.

[0125] By including or configuring a communication manager 820 according to examples as described herein, the device 805 may support techniques that allow a UE to remain in an inactive state in some situations where it would otherwise transition to an idle state. Such techniques may provide power savings due to reduced connection establishment or re-establishment of communications, improved resource utilization through reduced overhead, and reduced latency due to fewer interruptions in communications when the UE is in an inactive state. Thus, overall network efficiency, latency, reliability, and user experience may be enhanced.

[0126] In some examples, the communication manager 820 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 815, one or more antennas 825, or any combination thereof. Although the communication manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 820 may be supported or performed by the processor 840, the memory 830, the code 835, or any combination thereof. For example, the code 835 may include instructions that are executable by the processor 840 to cause the device 805 to perform various aspects of the small data transmission techniques for wireless communication as described herein, or the processor 840 and the memory 830 may be otherwise configured to perform or support such operations.

[0127] Fig. 9 1 is a flowchart illustrating a method 900 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure. The operations of the method 900 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 900 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0128] At 905, the method may include establishing a connection with a network entity for communication between the network entity and the UE. The operations of 905 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 905 may be performed as described in reference to Figure 7 The connection manager 725 is used to execute.

[0129] At 910, the method may include transitioning to an inactive state in which a security context associated with a connection between a network entity and a UE is maintained. The operations of 910 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 910 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0130] At 915, the method may include determining that one or more parameters associated with the connection meet threshold criteria based on the presence of data for transmission via the connection when in an inactive state. The operations of 915 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 915 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0131] At 920, the method may include sending data via the connection while in an inactive state based on one or more parameters satisfying a threshold criterion. The operations of 920 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 920 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0132] Fig.10 A flowchart illustrating a method 1000 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The operations of the method 1000 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1000 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0133] At 1005, the method may include establishing a connection with a network entity for communication between the network entity and the UE. The operations of 1005 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1005 may be performed as described in reference to Figure 7 The connection manager 725 is used to execute.

[0134] At 1010, the method may include transitioning to an inactive state in which a security context associated with a connection between a network entity and a UE is maintained. The operations of 1010 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1010 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0135] At 1015, the method may include identifying data for transmission via the connection while in an inactive state. The operations of 1015 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1015 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0136] At 1020, the method may include determining that one or more parameters associated with the connection fail to meet a threshold criterion. The operations of 1020 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1020 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0137] At 1025, the method may include delaying the transmission of data via the connection until one or more parameters associated with the connection meet a threshold criterion. The operations of 1025 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1025 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0138] At 1030, the method may include sending data via the connection while in an inactive state based on one or more parameters satisfying a threshold criterion. The operations of 1030 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1030 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0139] Fig.11 1 is a flowchart illustrating a method 1100 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1100 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0140] At 1105, the method may include establishing a connection with a network entity for communication between the network entity and the UE. The operations of 1105 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed as described in reference Figure 7 The connection manager 725 is used to execute.

[0141] At 1110, the method may include transitioning to an inactive state in which a security context associated with a connection between a network entity and a UE is maintained. The operations of 1110 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1110 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0142] At 1115, the method may include determining that a measurement periodicity for measuring one or more parameters associated with the connection is set to provide a shortened period between measurements relative to a regular period between measurements. The operations of 1115 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1115 may be performed as described in reference to Figure 7 The measurement periodicity manager 750 is used to perform the above-mentioned operation.

[0143] At 1120, the method may include delaying the transmission of SDT data via the connection until measurement periodicity is restored to provide a regular period between measurements. The operations of 1120 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1120 may be performed as described in reference to Figure 7 The measurement periodicity manager 750 is used to perform the above-mentioned operation.

[0144] At 1125, the method may include determining that the measurement periodicity threshold criterion is set to a regular period between measurements. The operations of 1125 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1125 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0145] At 1130, the method may include sending data via the connection while in an inactive state based on one or more parameters satisfying a threshold criterion. The operations of 1130 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1130 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0146] Fig.12 A flowchart illustrating a method 1200 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The operations of the method 1200 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1200 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0147] At 1205, the method may include establishing a connection with a network entity for communication between the network entity and the UE. The operations of 1205 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed as described in reference to Figure 7 The connection manager 725 is used to execute.

[0148] At 1210, the method may include transitioning to an inactive state in which a security context associated with a connection between a network entity and a UE is maintained. The operations of 1210 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0149] At 1215, the method may include determining that a neighbor cell search or measurement process is active at the UE. The operations of 1215 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0150] At 1220, the method may include delaying the transmission of SDT data via the connection until the neighbor cell search or measurement process is completed. The operations of 1220 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1220 may be performed as described in reference Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0151] Fig.13 1 is a flowchart illustrating a method 1300 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1300 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0152] At 1305, the method may include establishing a connection with a network entity for communication between the network entity and the UE. The operations of 1305 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed as described in reference to Figure 7 The connection manager 725 is used to execute.

[0153] At 1310, the method may include transitioning to an inactive state in which a security context associated with a connection between a network entity and a UE is maintained. The operations of 1310 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0154] At 1315, the method may include determining that a neighbor cell reselection timer is active at the UE. The operations of 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0155] At 1320, the method may include delaying the transmission of SDT data via the connection until the neighbor cell reselection timer expires. The operations of 1320 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0156] Fig.14 A flowchart illustrating a method 1400 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0157] At 1405, the method may include establishing a connection with a network entity for communication between the network entity and the UE. The operations of 1405 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed as described in reference to Figure 7 The connection manager 725 is used to execute.

[0158] At 1410, the method may include transitioning to an inactive state in which a security context associated with a connection between a network entity and a UE is maintained. The operations of 1410 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0159] At 1415, the method may include determining that one or more parameters associated with the connection meet threshold criteria based on the presence of data for transmission via the connection when in an inactive state. The operations of 1415 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0160] At 1420, the method may include sending data via the connection while in an inactive state based on one or more parameters satisfying a threshold criterion. The operations of 1420 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1420 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0161] At 1425, the method may include determining that a cell reselection process is triggered after initiating transmission of data via the connection while in an inactive state. The operations of 1425 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1425 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0162] At 1430, the method may include delaying the start of the cell reselection process until the transmission of data via the connection while in the inactive state is completed. The operations of 1430 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1430 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0163] Fig.15 A flowchart illustrating a method 1500 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0164] At 1505, the method may include establishing a connection with a network entity for communication between the network entity and the UE. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed as described in reference to Figure 7 The connection manager 725 is used to execute.

[0165] At 1510, the method may include transitioning to an inactive state in which a security context associated with a connection between a network entity and a UE is maintained. The operations of 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0166] At 1515, the method may include determining that one or more parameters associated with the connection meet threshold criteria based on the presence of data for transmission via the connection while in an inactive state. The operations of 1515 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0167] At 1520, the method may include sending data via the connection while in an inactive state based on one or more parameters satisfying a threshold criterion. The operations of 1520 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1520 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0168] At 1525, the method may include monitoring for confirmation in response to sending data via the connection. The operations of 1525 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1525 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0169] At 1530, the method may include initiating a cell reselection process while maintaining an inactive state in response to a decoding confirmation failure. The operations of 1530 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1530 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0170] At 1535, the method may include resuming transmission of data after the cell reselection process. The operations of 1535 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1535 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0171] Fig.16 A flowchart illustrating a method 1600 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0172] At 1605, the method may include receiving configuration information of a periodic resource set for sending data via a connection when the connection between the UE and the first cell is in an inactive state. The operations of 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed as described in reference to Figure 7 The configuration authorization manager 740 is executed.

[0173] At 1610, the method may include transitioning the connection from an active state to an inactive state. The operations of 1610 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0174] At 1615, the method may include, while in the inactive state, determining that there is a trigger for priority-based cell reselection from a first cell to a second cell having a higher priority than the first cell. The operations of 1615 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0175] At 1620, the method may include maintaining the connection with the first cell based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion, regardless of a trigger for priority-based cell reselection. The operations of 1620 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1620 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0176] Fig.17 A flowchart illustrating a method 1700 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0177] At 1705, the method may include receiving configuration information of a periodic resource set for sending data via a connection when the connection between the UE and the first cell is in an inactive state. The operations of 1705 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed as described in reference to Figure 7 The configuration authorization manager 740 is executed.

[0178] At 1710, the method may include transitioning the connection from an active state to an inactive state. The operations of 1710 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0179] At 1715, the method may include, while in the inactive state, determining that there is a trigger for priority-based cell reselection from a first cell to a second cell having a higher priority than the first cell. The operations of 1715 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0180] At 1720, the method may include maintaining the connection with the first cell based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion, regardless of a trigger for priority-based cell reselection. The operations of 1720 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1720 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0181] At 1725, the method may include initiating a priority-based cell reselection to a second cell based on a cell energy value associated with the first cell being below a threshold criterion. The operations of 1725 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1725 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0182] At 1730, the method may include maintaining a periodic resource set for communication via the first cell. The operations of 1730 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1730 may be performed as described in reference to Figure 7 The configuration authorization manager 740 is executed.

[0183] At 1735, the method may include prioritizing the first cell for subsequent cell reselection based on the maintained periodic resource set. The operations of 1735 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1735 may be performed as described in reference to Figure 7 The configuration authorization manager 740 is executed.

[0184] At 1740, the method may include performing subsequent cell reselection for communication via the first cell. The operations of 1740 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1740 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0185] At 1745, the method may include, while in an inactive state, sending data via a connection with the first cell using periodic resources in the periodic resource set. The operations of 1745 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1745 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0186] Fig.18 A flowchart illustrating a method 1800 for supporting small data transmission technology in wireless communication according to one or more aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1800 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0187] At 1805, the method may include, when a connection between the UE and the first cell is in an inactive state, receiving configuration information for a set of periodic resources for sending data via the connection. The operations of 1805 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed as described in reference to Figure 7 The configuration authorization manager 740 is executed.

[0188] At 1810, the method may include transitioning the connection from an active state to an inactive state. The operations of 1810 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed as described in reference to Figure 7 The inactive state manager 730 is used to execute.

[0189] At 1815, the method may include, while in the inactive state, determining that there is a trigger for priority-based cell reselection from a first cell to a second cell having a higher priority than the first cell. The operations of 1815 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1815 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0190] At 1820, the method may include maintaining the connection with the first cell based on one or more parameters associated with the connection with the first cell satisfying a threshold criterion, regardless of a trigger for priority-based cell reselection. The operations of 1820 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1820 may be performed as described in reference to Figure 7 The cell reselection manager 745 is used to perform the above operation.

[0191] At 1825, the method may include determining that one or more parameters associated with the first cell meet a threshold criterion based on the presence of data for transmission. The operations of 1825 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1825 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0192] At 1830, the method may include sending data via the first cell while in an inactive state based on one or more parameters satisfying a threshold criterion. The operations of 1830 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1830 may be performed as described in reference to Figure 7 The SDT manager 735 is used to execute.

[0193] The following provides an overview of various aspects of the disclosure:

[0194] Aspect 1: A method for wireless communication at a UE, the method comprising: establishing a connection with a network entity for communication between the network entity and the UE; transitioning to an inactive state, maintaining a security context associated with the connection between the network entity and the UE in the inactive state; determining that one or more parameters associated with the connection meet a threshold criterion based at least in part on the presence of data for sending via the connection when in the inactive state; and sending the data via the connection when in the inactive state based at least in part on the one or more parameters meeting the threshold criterion.

[0195] Aspect 2: According to the method described in Aspect 1, the method also includes: determining that the one or more parameters associated with the connection fail to meet the threshold standard; and delaying the sending of the data via the connection until the one or more parameters associated with the connection meet the threshold standard.

[0196] Aspect 3: The method according to any one of aspects 1 to 2, wherein the one or more parameters associated with the connection include a serving cell energy value.

[0197] Aspect 4: According to the method described in any one of Aspects 1 to 3, the method further includes: determining that a measurement periodicity for measuring the one or more parameters associated with the connection is set to provide a shortened period between measurements relative to a regular period between measurements; and delaying the sending of the data via the connection until the measurement periodicity is restored to provide the regular period between measurements.

[0198] Aspect 5: According to the method according to any one of Aspects 1 to 4, the method also includes: determining that a neighbor cell search or measurement process is active at the UE; and delaying the sending of the data via the connection until the neighbor cell search or measurement process is completed.

[0199] Aspect 6: According to the method of any one of Aspects 1 to 5, the method also includes: determining that a neighbor cell reselection timer is active at the UE; and delaying the sending of the data via the connection until the neighbor cell reselection timer expires.

[0200] Aspect 7: According to the method described in any one of Aspects 1 to 6, the method further includes: after initiating the sending of the data via the connection when in the inactive state, determining that a cell reselection process is triggered; and delaying the start of the cell reselection process until the sending of the data via the connection when in the inactive state is completed.

[0201] Aspect 8: The method according to aspect 7, wherein a search or measurement periodicity for cell reselection is adjusted based at least in part on an expected duration of the transmission of the data to delay the start of the cell reselection process.

[0202] Aspect 9: The method according to any one of aspects 1 to 8, further comprising: monitoring an acknowledgement in response to sending the data via the connection; and initiating a cell reselection process while maintaining the inactive state in response to a failure to decode the acknowledgement.

[0203] Aspect 10: The method according to aspect 9 further comprises: resuming the transmission of the data after the cell reselection process.

[0204] Aspect 11: A method according to any one of Aspects 1 to 10, wherein the amount of the data used to be sent via the connection when in the inactive state is less than a data threshold of a small data transmission (SDT) used to be sent when in the inactive state.

[0205] Aspect 12: A method for performing wireless communications at a UE, the method comprising: receiving configuration information of a periodic resource set for sending data via a connection between the UE and a first cell when the connection is in an inactive state; transitioning the connection from an active state to the inactive state; while in the inactive state, determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell; and maintaining the connection with the first cell based at least in part on one or more parameters associated with the connection with the first cell satisfying a threshold criterion, regardless of the trigger for the priority-based cell reselection.

[0206] Aspect 13: The method according to aspect 12, wherein the connection with the first cell is maintained in response to a cell energy value associated with the first cell satisfying the threshold criterion.

[0207] Aspect 14: The method according to any one of aspects 12 to 13, the method further comprising: initiating the priority-based cell reselection to the second cell based at least in part on a cell energy value associated with the first cell being below the threshold criterion.

[0208] Aspect 15: The method according to aspect 14 further includes: maintaining the periodic resource set for communication via the first cell; and prioritizing the first cell for subsequent cell reselection based at least in part on maintaining the periodic resource set.

[0209] Aspect 16: According to the method of Aspect 15, the method also includes: performing the subsequent cell reselection for communication via the first cell; and when in the inactive state, using periodic resources in the periodic resource set to send data via the connection with the first cell.

[0210] Aspect 17: According to the method described in any one of Aspects 12 to 16, the method also includes: determining that one or more parameters associated with the first cell satisfy the threshold criterion based at least in part on the presence of data for sending; and sending the data via the first cell when in the inactive state based at least in part on the one or more parameters satisfying the threshold criterion.

[0211] Aspect 18: An apparatus for performing wireless communications at a UE, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 11.

[0212] Aspect 19: An apparatus for wireless communication at a UE, the apparatus comprising at least one component for performing the method according to any one of aspects 1 to 11.

[0213] Aspect 20: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 1 to 11.

[0214] Aspect 21: An apparatus for performing wireless communications at a UE, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 12 to 17.

[0215] Aspect 22: An apparatus for wireless communication at a UE, the apparatus comprising at least one component for performing a method according to any one of aspects 12 to 17.

[0216] Aspect 23: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 12 to 17.

[0217] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0218] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0219] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0220] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, 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 an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0221] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. When implemented in software executed by a processor, the functions may be stored on or sent via a computer-readable medium as one or more instructions or codes. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination of these items. Features that implement the functions may also be physically located at different locations, including being distributed so that various parts of the functions are implemented at different physical locations.

[0222] Computer-readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that facilitates computer program to transfer from one place to another.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.By way of example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage device, disk storage or other magnetic storage device or can be used for carrying or storing desired program code parts and any other non-transient medium that can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.Moreover, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, includes CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0223] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0224] The terms "determine" or "determine" encompass a variety of actions, and thus, "determine" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database or other data structure), ascertaining, and similar actions. Additionally, "determine" may include receiving (such as receiving information), accessing (such as accessing data in a memory), and similar actions. Additionally, "determine" may include parsing, obtaining, selecting, choosing, establishing, and other such similar actions.

[0225] In the drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between the similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label regardless of the second reference label, or other subsequent reference labels.

[0226] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." The specific implementation includes specific details to provide an understanding of the technology. However, the technologies may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to suppress the concepts that obscure the examples.

[0227] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), the method include: establishing a connection with a network entity for communication between the network entity and the UE; transitioning to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained; determining that one or more parameters associated with the connection satisfy threshold criteria based at least in part on the presence of data for transmission via the connection while in the inactive state; and The data is sent via the connection while in the inactive state based at least in part on the one or more parameters satisfying the threshold criteria.

2. The method according to claim 1, further comprising: include: determining that the one or more parameters associated with the connection fail to satisfy the threshold criteria; as well as The sending of the data via the connection is delayed until the one or more parameters associated with the connection satisfy the threshold criteria. 3 . The method of claim 1 , wherein the one or more parameters associated with the connection include a serving cell energy value.

4. The method according to claim 1, further comprising: include: determining that a measurement periodicity for measuring the one or more parameters associated with the connection is arranged to provide a shortened period between measurements relative to a regular period between measurements; as well as Sending of the data over the connection is delayed until the measurement periodicity resumes to provide the regular period between measurements.

5. The method according to claim 1, further comprising: include: determining that a neighbor cell search or measurement procedure is active at the UE; as well as Sending of the data via the connection is delayed until the neighbor cell search or measurement procedure is completed.

6. The method according to claim 1, further comprising: include: determining that a neighbor cell reselection timer is active at the UE; as well as Sending of the data via the connection is delayed until the neighbor cell reselection timer expires.

7. The method according to claim 1, further comprising: include: determining that a cell reselection procedure is triggered after initiating transmission of the data via the connection while in the inactive state; as well as The start of the cell reselection procedure is delayed until completion of the sending of the data via the connection while in the inactive state.

8. The method of claim 7, wherein a search or measurement periodicity for cell reselection is adjusted based at least in part on an expected duration of the transmission of the data to delay the start of the cell reselection process.

9. The method according to claim 1, further comprising: include: monitoring for an acknowledgement in response to sending the data via the connection; as well as A cell reselection process is initiated while maintaining the inactive state in response to a failure to decode the acknowledgement.

10. The method according to claim 9, further comprising: include: The transmission of the data is resumed after the cell reselection process.

11. The method of claim 1, wherein the amount of the data for sending via the connection while in the inactive state is less than a small data send (SDT) data threshold for sending while in the inactive state.

12. A method for wireless communication at a user equipment (UE), the method include: When a connection between the UE and the first cell is in an inactive state, receiving configuration information of a set of periodic resources for sending data via the connection; transitioning the connection from an active state to the inactive state; while in the inactive state, determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell; as well as The connection with the first cell is maintained based at least in part on one or more parameters associated with the connection with the first cell satisfying a threshold criterion regardless of the trigger for the priority-based cell reselection.

13. The method of claim 12, wherein the connection with the first cell is maintained in response to a cell energy value associated with the first cell satisfying the threshold criterion.

14. The method according to claim 12, further comprising: include: The priority-based cell reselection to the second cell is initiated based at least in part on a cell energy value associated with the first cell being below the threshold criterion.

15. The method according to claim 14, further comprising: include: maintaining the periodic set of resources for communication via the first cell; as well as The first cell is prioritized for subsequent cell reselection based at least in part on maintaining the periodic set of resources.

16. The method according to claim 15, further comprising: include: performing the subsequent cell reselection for communication via the first cell; as well as While in the inactive state, data is sent via the connection with the first cell using periodic resources in the set of periodic resources.

17. The method according to claim 12, further comprising: include: determining, based at least in part on the presence of data for transmission, that one or more parameters associated with the first cell satisfy the threshold criteria; as well as The data is sent via the first cell while in the inactive state based at least in part on the one or more parameters satisfying the threshold criteria.

18. An apparatus for wireless communication at a user equipment (UE), the apparatus include: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: establishing a connection with a network entity for communication between the network entity and the UE; transitioning to an inactive state in which a security context associated with the connection between the network entity and the UE is maintained; determining that one or more parameters associated with the connection satisfy threshold criteria based at least in part on the presence of data for transmission via the connection while in the inactive state; and The data is sent via the connection while in the inactive state based at least in part on the one or more parameters satisfying the threshold criteria.

19. The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to: determining that the one or more parameters associated with the connection fail to satisfy the threshold criteria; and The sending of the data via the connection is delayed until the one or more parameters associated with the connection satisfy the threshold criteria.

20. The apparatus of claim 18, wherein the one or more parameters associated with the connection include a serving cell energy value.

21. The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to: determining that a measurement periodicity for measuring the one or more parameters associated with the connection is arranged to provide a shortened period between measurements relative to a regular period between measurements; and Sending of the data over the connection is delayed until the measurement periodicity resumes to provide the regular period between measurements.

22. The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to: determining that a neighbor cell search or measurement procedure is active at the UE; and Sending of the data via the connection is delayed until the neighbor cell search or measurement procedure is completed.

23. The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to: determining that a neighbor cell reselection timer is active at the UE; and Sending of the data via the connection is delayed until the neighbor cell reselection timer expires.

24. The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to: determining that a cell reselection procedure is triggered after initiating transmission of the data via the connection while in the inactive state; and The start of the cell reselection procedure is delayed until completion of the sending of the data via the connection while in the inactive state.

25. The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to: monitoring for an acknowledgement in response to sending the data via the connection; initiating a cell reselection procedure while maintaining the inactive state in response to a failure to decode the acknowledgement; and The transmission of the data is resumed after the cell reselection process.

26. An apparatus for wireless communication at a user equipment (UE), the apparatus include: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: When a connection between the UE and the first cell is in an inactive state, receiving configuration information of a set of periodic resources for sending data via the connection; transitioning the connection from an active state to the inactive state; while in the inactive state, determining that there is a trigger for priority-based cell reselection from the first cell to a second cell having a higher priority than the first cell; as well as The connection with the first cell is maintained based at least in part on one or more parameters associated with the connection with the first cell satisfying a threshold criterion regardless of the trigger for the priority-based cell reselection.

27. The apparatus of claim 26, wherein the connection with the first cell is maintained in response to a cell energy value associated with the first cell satisfying the threshold criterion.

28. The apparatus of claim 26, wherein the instructions are further executable by the processor to cause the apparatus to: The priority-based cell reselection to the second cell is initiated based at least in part on a cell energy value associated with the first cell being below the threshold criterion.

29. The apparatus of claim 28, wherein the instructions are further executable by the processor to cause the apparatus to: maintaining the periodic set of resources for communication via the first cell; prioritizing the first cell for subsequent cell reselection based at least in part on maintaining the periodic set of resources; performing the subsequent cell reselection for communication via the first cell; as well as While in the inactive state, data is sent via the connection with the first cell using periodic resources in the set of periodic resources.

30. The apparatus of claim 26, wherein the instructions are further executable by the processor to cause the apparatus to: determining, based at least in part on the presence of data for transmission, that one or more parameters associated with the first cell satisfy the threshold criteria; and The data is sent via the first cell while in the inactive state based at least in part on the one or more parameters satisfying the threshold criteria.

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