Resource for data transmission related to ambient IoT communication
The challenge of determining suitable resources for data transmission in ambient IoT communication is addressed by transmitting status information from ambient IoT devices, allowing for dynamic resource allocation and ensuring efficient and reliable data exchange.
Patent Information
- Application Number
- PCT/CN2024/105542
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-30
AI Technical Summary
Existing wireless communication systems face challenges in determining suitable resources for data transmission in ambient Internet of Things (IoT) communication, particularly for ultra-low complexity devices with ultra-low power consumption.
The proposed solution involves a mechanism where an ambient IoT device transmits status information of data to be transmitted, and the receiving device allocates a suitable resource for the data transmission, enabling efficient data exchange.
This approach ensures reliable and efficient data transmission for ambient IoT devices by dynamically allocating resources based on the status information of the data, thereby supporting the specific power and complexity requirements of these devices.
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Figure CN2024105542_30052025_PF_FP_ABST
Abstract
Description
RESOURCE FOR DATA TRANSMISSION RELATED TO AMBIENT IOT COMMUNICATIONTECHNICAL FIELD
[0001] The present disclosure relates to wireless communications, and more specifically to devices, methods, apparatuses, processors, and computer readable medium for determining a resource for a data transmission related to ambient internet of things (ambient-IoT or A-IoT) communication.BACKGROUND
[0002] A wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. Each network communication devices, such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .
[0003] The third generation partnership project (3GPP) release 19 (Rel-19) A-IoT study targets a further assessment at radio access network (RAN) work group (WG) level of Ambient IoT, a new 3GPP IoT technology, suitable for deployment in a 3GPP system, which relies on ultra-low complexity devices with ultra-low power consumption for the very-low end IoT applications.SUMMARY
[0004] The present disclosure relates to devices, methods, apparatuses, processors, and computer readable medium for determining a resource for a data transmission related to ambient IoT communication. According to embodiments in the present disclosure, the data transmission of an ambient IoT device can be enabled by using an allocated resource.
[0005] In some implementations, there is provided a first device, such as an A-IoT device. The first device comprises at least one memory; and at least one processor coupled with the at least one memory and configured to cause the first device to: transmit, to a second device, status information of data that is to be transmitted to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication; receive, from the second device, resource information for a transmission of the data; and transmit, to the second device, the data by using the resource.
[0006] In some implementations, there is provided a second device. The second device comprises at least one memory; and at least one processor coupled with the at least one memory and configured to cause the second device to: receive, from a first device or a core network entity, status information of data that is to be transmitted from the first device to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication; transmit, to the first device, resource information for a transmission of the data; and receive, from the first device, the data by using the resource.
[0007] In some implementations, there is provided a core network entity. The core network entity comprises at least one memory; and at least one processor coupled with the at least one memory and configured to cause the core network entity to: transmit, to a second device, a service request associated with the first device, wherein the service request indicates at least one of an inventory service or a command service, and wherein the service request explicitly or implicitly indicates the status information of the data.
[0008] In some implementations, there is provided a method performed by the first device. The method comprises: transmitting, to a second device, status information of data that is to be transmitted to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication; receiving, from the second device, resource information for a transmission of the data; and transmitting, to the second device, the data by using the resource.
[0009] In some implementations, there is provided a method performed by the second device. The method comprises: receiving, from a first device or a core network entity, status information of data that is to be transmitted from the first device to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication; transmitting, to the first device, resource information for a transmission of the data; and receiving, from the first device, the data by using the resource.
[0010] In some implementations, there is provided a method performed by the core network entity. The method comprises: transmitting, to a second device, a service request associated with the first device, wherein the service request indicates at least one of an inventory service or a command service, and wherein the service request explicitly or implicitly indicates the status information of the data.
[0011] In some implementations, there is provided a processor for wireless communication. The processor comprises at least one controller coupled with at least one memory and configured to cause the processor to: transmit, to a second device, status information of data that is to be transmitted to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication; receive, from the second device, resource information for a transmission of the data; and transmit, to the second device, the data by using the resource.
[0012] In some implementations, there is provided a processor for wireless communication. The processor comprises at least one controller coupled with at least one memory and configured to cause the processor to: receive, from a first device or a core network entity, status information of data that is to be transmitted from the first device to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication; transmit, to the first device, resource information for a transmission of the data; and receive, from the first device, the data by using the resource.
[0013] In some implementations, there is provided a processor for wireless communication. The processor comprises at least one controller coupled with at least one memory and configured to cause the processor to: transmit, to a second device, a service request associated with the first device, wherein the service request indicates at least one of an inventory service or a command service, and wherein the service request explicitly or implicitly indicates the status information of the data.
[0014] In some implementations of the methods and the first device described herein, further comprising: receiving, from the second device, a first resource with a first size; and determining that the first resource is not enough for transmitting the data.
[0015] In some implementations of the methods and the first device described herein, a part of the data along with the status information of the data is transmitted by using the first resource, or wherein the status information of the data is transmitted by using the first resource.
[0016] In some implementations of the methods and the first device described herein, further comprising: receiving, from the second device, a first request for the status information of the data, wherein the first request is carried in one of: an initial trigger message, an ambient IoT paging message, an access trigger message, or a further reader-to-device (R2D) message.
[0017] In some implementations of the methods and the second device described herein, further comprising: transmitting, to the first device, a first resource with a first size.
[0018] In some implementations of the methods and the second device described herein, further comprising: transmitting, to the first device, a first request for the status information of the data, wherein the first request is carried in one of: an initial trigger message, an ambient IoT paging message, an access trigger message, or a further R2D message.
[0019] In some implementations of the methods and the second device described herein, further comprising: receiving, from the core network entity, a service request associated with the first device, wherein the service request indicates at least one of the inventory service or the command service, and wherein the first request is transmitted based on the service request.
[0020] In some implementations of the methods and the second device described herein, further comprising: receiving, from the core network entity, a service request associated with the first device, wherein the service request indicates at least one of the inventory service or the command service, and wherein the service request explicitly or implicitly indicates the status information of the data.
[0021] In some implementations of the methods and the second device described herein, further comprising: determining the status information of the data based on the service request.
[0022] In some implementations of the methods and the second device described herein, the service request comprises command information of the command service, further comprising: determining the status information of the data based on the command information of the command service and pre-stored mapping information.
[0023] In some implementations of the methods and the second device described herein, the service request comprises service response information of the inventory service or the command service from the first device, or wherein the service request comprises the status information of the data, further comprising: determining the status information of the data based on the service request.
[0024] In some implementations of the methods and the second device described herein, further comprising: transmitting, to a serving base station of the UE, a second request for at least one of: a resource for a transmission from the first device to the second device, or a further resource for a further transmission from the second device to the first device; and receiving, from the serving base station, one of the resource and the further resource.
[0025] In some implementations of the methods and the second device described herein, the second request is implemented as a common buffer status report (BSR) for both the resource and the further resource, or the second request is implemented as a first BSR for the resource and a second BSR for the further resource.
[0026] In some implementations of the methods and the second device described herein, the second request is transmitted based on of: the data to be transmitted from the first device to the second device becomes available, further data to be transmitted from the second device to the first device becomes available, there is no resource for a transmission of the data, or an allocated resource is not enough for a transmission of the data based on the status information of the data.
[0027] In some implementations of the methods and the second device described herein, further comprising: transmitting, to the serving base station, a scheduling request (SR) for a transmission of the second request.
[0028] In some implementations of the methods and the second device described herein, the SR comprises: a dedicated SR for the ambient IoT communication, or a common SR for both the ambient IoT communication and an uplink or sidelink communication.
[0029] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the first request comprises a second resource with a second size for transmitting the status information of the data.
[0030] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the status information of the data comprises one of: a buffer size of the data, or at least one indication related to the data.
[0031] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the buffer size of the data comprises one of: a number of bits indicating the buffer size, a range of bits within which the buffer size is, or a level of the buffer size.
[0032] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the at least one indication comprises one of: a segmentation number indication, which is used for indicating a number of segments for a data transmission, a follow-up indication, which is used for indicating whether there is a subsequent data transmission after a current transmission, or an end indication, which is used for indicating whether the current transmission is a last transmission.
[0033] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the status information of the data is carried in one of: a message of a medium access control (MAC) layer, a message of a dedicated access stratum (AS) ambient IoT layer, or message 1 or message A or message 3 during an access procedure.
[0034] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the status information is included in a dedicated field of a MAC control element (CE) or a MAC packet data unit (PDU) message generated in a MAC layer, and wherein the dedicated field comprises one or multiple bits for carrying the status information of the data.
[0035] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the data comprises at least one of: a MAC layer data, an application layer data, a dedicated AS layer data, an ambient IoT layer data, data for a current transmission, data for a subsequent transmission, data for a segmented transmission, data for an initial transmission, or data for a retransmission.
[0036] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the service request comprises command information of the command service, the command information is used by the second device for determining the status information of the data.
[0037] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the service request comprises service response information of the inventory service or the command service from the first device, wherein the service response information is used for determining the status information of the data.
[0038] In some implementations of the methods, the first device, the second device, and the core network entity described herein, the service request comprises the status information of the data.BRIEF DESCRIPTION OF THE DRAWINGS
[0039] FIG. 1 illustrates an example of a wireless communications system in which some embodiments of the present disclosure can be implemented;
[0040] FIG. 2A illustrates a schematic diagram of an example communication network in which some embodiments of the present disclosure can be implemented;
[0041] FIG. 2B illustrates an example schematic of deployment scenario 1 with topology 1 for an A-IoT device;
[0042] FIG. 2C illustrates an example schematic of deployment scenario 2 with topology 2 for an A-IoT device;
[0043] FIG. 3 illustrates a signalling chart illustrating communication process in accordance with some example embodiments of the present disclosure;
[0044] FIG. 4 illustrates some examples of MAC signalling for carrying the status information of the data in accordance with some example embodiments of the present disclosure;
[0045] FIG. 5 illustrates another signalling chart illustrating communication process in accordance with some example embodiments of the present disclosure;
[0046] FIG. 6 illustrates a signalling chart illustrating communication process for resource request in accordance with some example embodiments of the present disclosure;
[0047] FIG. 7 illustrates some examples of BSR in accordance with some example embodiments of the present disclosure;
[0048] FIG. 8 illustrates an example of a device that is suitable for implementing embodiments of the present disclosure;
[0049] FIG. 9 illustrates an example of a processor that is suitable for implementing some embodiments of the present disclosure;
[0050] FIG. 10 illustrates a flowchart of an example method implemented at a first device in accordance with aspects of the present disclosure;
[0051] FIG. 11 illustrates a flowchart of an example method implemented at a second device in accordance with aspects of the present disclosure; and
[0052] FIG. 12 illustrates a flowchart of an example method implemented at a core network entity in accordance with aspects of the present disclosure.
[0053] Throughout the drawings, the same or similar reference numerals represent the same or similar element.DETAILED DESCRIPTION
[0054] Principles of the present disclosure will now be described with reference to some embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein can be implemented in various manners other than the ones described below. In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0055] References in the present disclosure to “one embodiment, ” “an example embodiment, ” “an embodiment, ” “some embodiments, ” and the like indicate that the embodiment (s) described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment (s) . Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0056] It shall be understood that although the terms “first” and “second” or the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could also be termed as a second element, and similarly, a second element could also be termed as a first element, without departing from the scope of embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms. In some examples, values, procedures, or apparatuses are referred to as “best, ” “lowest, ” “highest, ” “minimum, ” “maximum, ” or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
[0057] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments. As used herein, the singular forms “a, ” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises, ” “comprising, ” “has, ” “having, ” “includes” and / or “including, ” when used herein, specify the presence of stated features, elements, components and / or the like, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. For example, the term “includes” and its variants are to be read as open terms that mean “includes, but is not limited to. ” The term “based on” is to be read as “based at least in part on. ” The term “one embodiment” and “an embodiment” are to be read as “at least one embodiment. ” The term “another embodiment” is to be read as “at least one other embodiment. ” The use of an expression such as “A and / or B” can mean either “only A” or “only B” or “both A and B. ” Other definitions, explicit and implicit, may be included below.
[0058] FIG. 1 illustrates an example of a wireless communications system 100 in which some embodiments of the present disclosure can be implemented. The wireless communications system 100 may include one or more network entities 102 (also referred to as network equipment (NE) ) , one or more UEs 104, a core network (CN) 106, and a packet data network 108. The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as a long term evolution (LTE) network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a 5G network, such as a new radio (NR) network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
[0059] The one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN) , a base transceiver station, an access point, a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. A network entity 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection. For example, a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
[0060] A network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, message, broadcast, etc. ) for one or more UEs 104 within the geographic coverage area 112. For example, a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network. In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102. Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0061] The one or more UEs 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples. In some implementations, a UE 104 may be stationary in the wireless communications system 100. In some other implementations, a UE 104 may be mobile in the wireless communications system 100.
[0062] The one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG. 1. A UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the CN 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment) , as shown in FIG. 1. Additionally, or alternatively, a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communications system 100.
[0063] A UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink (SL) . For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
[0064] A network entity 102 may support communications with the CN 106, or with another network entity 102, or both. For example, a network entity 102 may interface with the CN 106 through one or more backhaul links 116 (e.g., via an S1, N2, N3, or another network interface) . The network entities 102 may communicate with each other over the backhaul links 116 (e.g., via an X2, Xn, or another network interface) . In some implementations, the network entities 102 may communicate with each other directly (e.g., between the network entities 102) . In some other implementations, the network entities 102 may communicate with each other or indirectly (e.g., via the CN 106) . In some implementations, one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
[0065] In some implementations, a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, 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, a network entity 102 may include one or more of a central unit (CU) , a distributed unit (DU) , a radio unit (RU) , a RAN Intelligent Controller (RIC) (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, or any combination thereof.
[0066] An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations) . In some implementations, one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0067] Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU. For example, a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack. In some implementations, the CU may host upper protocol layer (e.g., a layer 3 (L3) , a layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU may be connected to one or more DUs or RUs, and the one or more DUs or RUs may host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an 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.
[0068] Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack. The DU may support one or multiple different cells (e.g., via one or more RUs) . In some implementations, a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU) .
[0069] A CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1-C, F1-U) , and a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface) . In some implementations, a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links.
[0070] The CN 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The CN 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the CN 106.
[0071] The CN 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, N3, or another network interface) . The packet data network 108 may include an application server 118. In some implementations, one or more UEs 104 may communicate with the application server 118. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the CN 106 via a network entity 102. The CN 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the CN 106 (e.g., one or more network functions of the CN 106) .
[0072] In the wireless communications system 100, the network entities 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) . In some implementations, the network entities 102 and the UEs 104 may support different resource structures. For example, the network entities 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the network entities 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) . The network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
[0073] One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.
[0074] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.
[0075] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., orthogonal frequency-division multiplexing (OFDM) symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.
[0076] In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) . In some implementations, FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
[0077] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g., μ=0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g., μ=1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., μ=3) , which includes 120 kHz subcarrier spacing.
[0078] A study item on Ambient IoT has completed in 3GPP Rel-18, which provides a terminological and scoping framework for future discussions of Ambient IoT. This has defined representative use cases, deployment scenarios, connectivity topologies, Ambient IoT devices, design targets, and required functionalities. It also conducted a preliminary feasibility assessment and gave recommendations for down-selection in setting the scope of Rel-19 RAN WG level study. 3GPP Rel-19 A-IoT study targets a further assessment at RAN WG-level of Ambient IoT, a new 3GPP IoT technology, suitable for deployment in a 3GPP system, which relies on ultra-low complexity devices with ultra-low power consumption for the very-low end IoT applications. In a latest 3GPP meeting, it has been agreed that legacy new radio (NR) scheduling request (SR) or buffer status report (BSR) mechanism is not supported for A-IoT communication. In this event, how to determine or allocate resources associated with the A-IoT communication should be studied.
[0079] Embodiments of the present disclosure provide a solution for determining a resource for a D2R data transmission. In the solution, the first device may provide status information of data to be transmitted, and accordingly the second device may allocate a suitable resource for the data transmission. Thus the data transmission of the first device can be enabled by using the allocated resource. As such, a mechanism and corresponding signalling are defined for determining a resource for D2R data transmission, and the ambient IoT communication can be guaranteed. Principles and implementations of the present disclosure will be described in detail below with reference to the figures.
[0080] FIG. 2A illustrates a schematic diagram of an example communication network 200 in which some embodiments of the present disclosure can be implemented. As shown in FIG. 2A, the communication network 200 may include an A-IoT device 210, a BS 220-1, a UE 220-2, and a CN entity 230. With reference to FIG. 1, the BS 220-1 may be the network entity 102, and the UE 220-2 may be the UE 104.
[0081] For ease of description, the A-IoT device 210 may be referred to as a first device 210, and the BS 220-1 and the UE 220-2 may be collectively or separately referred to as a second device 220. In some examples, the second device 220 may be referred to as a reader for the A-IoT device 210. It is to be noted that although a BS and / or a UE is illustrated as a reader, the device type of the reader can be in a different type which is not limited for this aspect.
[0082] In some examples, a transmission from the first device 210 (i.e. ambient IoT device) to the second device 220 (i.e., a reader) may be referred to as a device-to-reader (D2R) transmission, and a transmission from the second device 220 (i.e., a reader) to the first device 210 (i.e. ambient IoT device) may be referred to as a reader-to-device (R2D) transmission.
[0083] The CN entity 230 may be a network function (NF) in CN, such as a 5GC or a 6G core network. For example, the CN entity 230 may be implemented as an A-IoT function (AIF) or an Access and Mobility Management Function (AMF) of a 5GC.
[0084] It is to be understood that the numbers of devices shown in FIG. 2A are only for the purpose of illustration. The communication network 200 may include any suitable number of devices.
[0085] The following connectivity topologies (topology 1 and topology 2) for Ambient IoT networks and devices are defined for the purposes of the study on ambient IoT in RAN. In all these topologies, the Ambient IoT device may be provided with a carrier wave from other node (s) either inside or outside the topology. The links in each topology may be bidirectional or unidirectional.
[0086] FIG. 2B illustrates an example schematic of deployment scenario 1 with topology 1 for an A-IoT device. In Topology 1, the ambient IoT device directly and bidirectionally communicates with a base station. The BS serves as the Reader for the ambient IoT device and performs operation (e.g., inventory, read, write, etc. ) to the ambient IoT device. The communication between the base station and the ambient IoT device includes Ambient IoT data and / or signalling. This topology includes the possibility that the BS transmitting to the Ambient IoT device is a different from the BS receiving from the Ambient IoT device. In topology 1, the base station and coexistence characteristics may include Micro-cell, co-site, etc.
[0087] FIG. 2C illustrates an example schematic of deployment scenario 2 with topology 2 for an A-IoT device. In Topology 2, the Ambient IoT device communicates bidirectionally with an intermediate node between the device and the base station. The intermediate node serves as the Reader for the ambient IoT device and performs operation (e.g., inventory, read, write, etc. ) to the ambient IoT device. In this topology, the intermediate node can be a relay, IAB node, UE, repeater, etc. which is capable of Ambient IoT. The intermediate node transfers Ambient IoT data and / or signalling between the base station and the Ambient IoT device. In topology 2, the base station and coexistence characteristics may include Micro-cell, co-site, etc. In topology 2, the location of intermediate node may be indoor.
[0088] BS, UE, assisting node, or intermediate node could be multiple BSs or UEs, respectively. The mixture of indoor and outdoor placement of such nodes is regarded as a network implementation choice. Account would need to be taken of potential impact on device or node complexity. In the connectivity topologies, this does not imply the existence of multi-hop assisting or intermediate nodes.
[0089] An overall objective of the study on ambient IoT shall be to study a harmonized air interface design with minimized differences (where necessary) for Ambient IoT to enable the following devices:
[0090] i. ~1 μW peak power consumption, has energy storage, initial sampling frequency offset (SFO) up to 10X ppm, neither DL nor UL amplification in the device. The device’s UL transmission is backscattered on a carrier wave provided externally.
[0091] ii. ≤ a few hundred μW peak power consumption, has energy storage, initial sampling frequency offset (SFO) up to 10X ppm, both DL and / or UL amplification in the device. The device’s UL transmission may be generated internally by the device, or be backscattered on a carrier wave provided externally. It is to be understood that “≤ a few hundred μW” means WGs are not tasked with setting a particular value, and that it will be for WG discussions to determine if a presented design with corresponding power consumption satisfies the “≤ a few hundred μW” requirement.
[0092] ● X is to be decided in WGs.
[0093] ● Coverage design target: Maximum distance of 10-50 m with device indoors.
[0094] ● For Topologies 1 & 2 (UE as intermediate node under NW control) , with no RRC states, no mobility (i.e. at least no cell selection / re-selection -like function) , no HARQ, no ARQ.
[0095] Ambient IoT devices are characterized according to their energy storage capacity, and capability of generating RF signals for their transmissions. The A-IoT device has either: no energy storage at all, or limited energy storage. Relying on these storage capacities, the Ambient IoT devices can be categorized to:
[0096] - Device A: No energy storage, no independent signal generation / amplification, i.e. backscattering transmission.
[0097] - Device B: Has energy storage, no independent signal generation, i.e. backscattering transmission. Use of stored energy can include amplification for reflected signals.
[0098] - Device C: Has energy storage, has independent signal generation, i.e., active RF components for transmission.
[0099] A limited energy storage can be different among implementations within Device B or implementations within Device C, and different between Device B and Device C. Such storage is expected to be order (s) of magnitude smaller than an NB-IoT device would typically include. Device A, B, and C are able to demodulate control, data, etc. from the relevant entity in RAN according to connectivity topology.
[0100] FIG. 3 illustrates a signalling chart illustrating communication process 300 in accordance with some example embodiments of the present disclosure. The process 300 may involve a first device 210, a second device 220, and a CN entity 230 as discussed with reference to FIG. 2A. It would be appreciated that the process 300 may be applied to other communication scenarios, which will not be described in detail.
[0101] At 310, the first device 210 transmits, to the second device 220, status information of data. In some implementations, the data is associated with an inventory service and / or a command service related to ambient IoT communication. In some implementations, the data is to be transmitted from the first device 210 to the second device 220. In some examples, the data includes D2R message / data / information / signalling.
[0102] In some implementations, if there is no available resource or not enough resource for a transmission of the data, the first device 210 may transmit the status information of the data to the second device 220.
[0103] In addition or alternatively, the second device 220 may transmit, and the first device 210 may receive, a first resource with a first size to the first device 210 at 304. In some examples, the first size may be a default size or may be determined by implementation of the second device 220. For example, the first resource may be an allocated resource or a configured resource from the second device 220. In some examples, the first device 210 may determine that the first resource is not enough for a transmission of the data, that is the first resource allocated by the second device 220 is not enough to accommodate all data to be transmitted. In some examples, the first device 210 may determine to transmit the status information of the data if the first resource is not enough.
[0104] In some examples, the first device 210 may transmit the status information of the data together with a part of the data at 310 by using the first resource. For example, partial D2R data may be transmitted with the status information which indicates a subsequent transmission.
[0105] In some other examples, the first device 210 may transmit the status information of the data by using the first resource. For example, the status information is transmitted without any data, and the status information may be sued to request a resource with an enough size for a full data transmission.
[0106] In addition or alternatively, the second device 220 may transmit, and the first device 210 may receive, a first request for the status information to the first device 210 at 304. In some examples, the first request may indicate to the first device 210 to provide the status information of the data. Accordingly, the first device 210 may transmit the status information of the data at 310 in response to the first request at 304.
[0107] In some examples, the core network entity 230 may transmit, and the second device 220 may receive, a service request associated with the first device 210 at 302. In some examples, the second device 220 may determine to request the status information (i.e., transmit the first request) based on the service request. For example, the status information of the data is not indicated (implicitly or explicitly) by the service request. For example, the service request indicates to the second device 220 to request the status information from the first device 210.
[0108] In some examples, the first request may include a second resource with a second size, or a second resource with a second size is transmitted along with the first request. For example, the second resource may be used by the first device 210 to transmit the status information of the data. For example, the second resource may be an additional resource with a fixed size.
[0109] In some examples, the first request may be included in, or may be implemented as, or may be carried in a R2D message. In some examples, the first request may be carried in any one of: an initial trigger message, an ambient IoT paging message, an access trigger message, or a further R2D message. It should be noted that any other R2D message may be used for transmitting the first request, and the present disclosure does not limit for this aspect.
[0110] As such, a trigger event and signalling are defined for the first device 210 to transmit / provide the status information of the data. For example, the trigger event may be receiving a first resource which is not enough, receiving a first request, no resource being available, etc.
[0111] After receiving the status information of the data from the first device 210, the second device 220 may determine a resource based on the statue information. At 320, the second device 220 transmits resource information for a transmission of the data to the first device 210. In some examples, the second device 220 may allocate a suitable resource to the first device 210 for data transmission. In some examples, the resource information may indicate a third resource with a third size which is enough for the data transmission. Accordingly, the first device 210 transmits the data at 330 by using the resource. For example, the first device 210 performs the data transmission using the resource indicated by the first device 210. As such, the D2R data transmission can be enabled with a suitable resource.
[0112] In some implementations, the status information may be related to data that is generated in a MAC layer and / or an upper layer. In some examples, the upper layer may be a layer that is above the MAC layer, for example, the upper layer may be an application layer, an ambient IoT layer, a dedicated AS layer, an ambient IoT sub-AS layer, etc. In some examples, the data lay include one or more of: a MAC layer data, an application layer data, a dedicated AS layer data, or an ambient IoT layer data.
[0113] In some implementations, the status information may be related to data that is for a current transmission and / or subsequent transmission. In some examples, the data may include one or more of: data for a current transmission, data for a subsequent transmission, data for a segmented transmission, data for an initial transmission, or data for a retransmission.
[0114] In some implementations, the status information of the data may include a buffer size of the data, and / or at least one indication related to the data. In some examples, the buffer size of the data may also be called as a D2R message size, a D2R data buffer size, a message size, a data size, or the like, the present disclosure does not limit for this aspect. In some examples, the at least one indication related to the data may also be called as an indication related to D2R data transmission, a D2R message status indication, a D2R data status indication, a status indication, or the like, the present disclosure does not limit for this aspect. For example, the status information of the data may also be called as message size / status, message size / status indication, or the like, the present disclosure does not limit for this aspect.
[0115] In some examples, the buffer size of the data may include a number of bits indicating the buffer size. For example, X bits may be included for indicating a detailed message size or a data buffer size calculated by the first device 210. In some examples, the buffer size of the data may include a range of bits within which the buffer size is. For example, a range of X-Y bits may be included for indicating an estimated (or predicted or approximated) range of the message size or the data buffer size. In some examples, the buffer size of the data may include a level of the buffer size. For example, multiple levels, such as low, middle, high, etc., may be predefined, and one of the multiple levels may be used as a specific level for indicating the buffer size of the data.
[0116] For instance, the buffer size of the data may include a data size generated in an upper layer, e.g., A-IoT layer, application layer, or A-IoT sub-AS layer if supported. For instance, the buffer size of the data may include a data size generated in upper layer as above and a data size generated in a MAC layer, e.g., MAC CE. For instance, the buffer size of the data may include a data size only for current D2R transmission. For instance, the buffer size of the data may include a data size for current D2R transmission and segmented D2R transmission if any. For instance, the buffer size of the data may include a data size pending for an initial transmission and retransmission (e.g., blind retransmission) if any.
[0117] In some examples, at least one indication related to the data may include a follow-up indication. For example, the follow-up indication may be used for indicating whether there is a subsequent data transmission after the current transmission. For example, the follow-up indication may be implemented by one or more bits (such as 1 bit) , for indicating “yes” or “no” for the subsequent transmission. For example, the follow-up indication is included if there is / has subsequent transmission. For example, if a follow-up indication is included in the status information of the data, it may indicate that there (still) has message (s) to be transmitted after the current D2R transmission. For example, if no follow-up indication is included, the second device 220 may consider that there is no subsequent transmission after the current data transmission.
[0118] In some examples, the at least one indication related to the data may include a segmentation number indication. For example, the segmentation number indication may be used for indicating a number of segments for a data transmission. For example, the data may be segmented into N segments, and the segmentation number indication may indicate the number “N” .
[0119] In some examples, the at least one indication related to the data may include an end indication. For example, the end indication may be used for indicating whether the current transmission is a last transmission. For example, the end indication may be used for indicating that there is no subsequent transmission after the current D2R transmission. For example, the end indication may be used for indicating that the current data transmission is completed. For example, if no end indication is included, the second device 220 may consider that there is / has subsequent transmission after the current data transmission.
[0120] As such, detailed information, such as a buffer size of the data and / or at least one indication related to the data, included in the status information of data is defined and may be provided to a reader.
[0121] In some implementations, the status information of the data may be included in, or may be transmitted via a D2R message. In some examples, the status information of the data may be included in a message of a dedicated AS layer or an ambient IoT layer. For example, signaling carried in a new AS A-IoT layer (if supported) may be used for carrying the status information of the data. In some examples, the status information of the data may be included in a message that in involved in an access procedure, for example, message 1 (MSG1) , message 3 (MSG3) , or message A (MSGA) during the access procedure may be used for carrying the status information of the data.
[0122] In some examples, the status information of the data may be transmitted by using a MAC PDU or a MAC CE, e.g., along with a D2R transmission or separately with the D2R transmission. For example, the MAC PDU or the MAC CE may include a dedicated field for carrying the status information of the data, where the field may include one or multiple bits. For example, a header or a sub-header of the MAC PDU or the MAC CE may be the dedicated field. For example, a dedicated MAC CE may be the dedicated field of the MAC PDU.
[0123] FIG. 4 illustrates some examples 400 for the MAC signalling that carries the status information of the data. In the example 410, the status information of the data (i.e. the MSG size / status) is carried in a sub-header of a MAC PDU, with a payload MAC Service Data Unit (SDU) . In the example 420, a dedicated MAC CE is defined for carrying the status information of the data (i.e. the MSG size / status) . In the example 430, a dedicated MAC CE in a MAC PDU is defined for carrying the status information of the data (i.e. the MSG size / status indication) , and a payload of the MAC PDU is MAC SDU.
[0124] In some examples, a dedicated field in the MAC PDU or the MAC CE may include one or multiple bits. For example, the one or multiple bits may be mapped to the buffer size of the data to be transmitted, such as a number of bits (or bytes) , a range of bits, or a level of the buffer size. For example, the one or multiple bits may indicate whether there is at least one indication related to the data. For example, the one or multiple bits may indicate a follow-up indication, e.g., indicating whether there is one or more further messages needs to be transmitted. For example, the one or multiple bits may indicate an end indication, e.g., indicating whether all data (or messages) has been transmitted or whether there is no more message needs to be transmitted.
[0125] In some examples, the dedicated field may include one or multiple bits that indicate a message index and a corresponding message size. For example, the dedicated field may include one or more sub-fields corresponding to one or more messages respectively. For example, a sub-field may include a corresponding message index and a corresponding message size.
[0126] According to some embodiments with reference to FIGS. 3-4, the first device may provide status information of data to be transmitted, and accordingly the second device may allocate a suitable resource for the data transmission. Thus the data transmission of the first device can be enabled by using the allocated resource. As such, a mechanism and corresponding signalling are defined for determining a resource for D2R data transmission, and the ambient IoT communication can be guaranteed.
[0127] Reference is further made to FIG. 5, which illustrates another signalling chart illustrating communication process 500 in accordance with some example embodiments of the present disclosure. The process 500 may involve a first device 210, a second device 220, and a CN entity 230 as discussed with reference to FIG. 2A. It would be appreciated that the process 500 may be applied to other communication scenarios, which will not be described in detail.
[0128] At 510, the CN entity 230 transmits, and the second device 220 receives, a service request that is associate with the first device 210. For example, the service request may include an identifier of the first device 210. For example, the service request may be received by the second device 220 via an ambient IoT layer or via an application layer. In some examples, the service request may indicate an inventory service and / or a command service related to ambient IoT communication of the first device 210.
[0129] At 520, the second device 220 determines, based on the service request from the CN entity 230, status information of data that is to be transmitted from the first device 210 to the second device 220. It should be noted that details of the status information of the data may refer to those discussed with reference to FIG. 3, and will not be repeated here.
[0130] In some implementations, the service request may explicitly indicate (e.g., include) the status information of the data. In some examples, as discussed with reference to FIG. 3, the status information of the data may include a buffer size of the data (e.g., a D2R message size) . In some examples, the CN entity 230 may indicate an exact / predicted / appropriate D2R message size or a specific range / level of D2R message size to the second device 220 explicitly. In some examples, the service request from the CN entity 230 may be visible to the second device 220, and the second device 220 may obtain the status information of the data from the service request. In some other examples, the service request from the CN entity 230 may be transparent for the second device 220, and the CN entity 230 may indicate the status information of the data to the second device 220 additionally or separately.
[0131] In some implementations, the service request may implicitly indicate the status information of the data. In some examples, the service request may indicate a service type, which may be inventory, command, or both inventory and command. In some examples, the service request may further indicate a command type, which includes one or more of: read, write, enable / disable command, etc.
[0132] In some examples, the service request may include command information for a command service, for example, the command information may be a command type, which includes one or more of: read, write, enable / disable command, etc. In some examples, the second device 220 may determine the status information of the data based on the command information and pre-stored mapping information. In some examples, the second device 220 may have an ambient IoT layer and may maintain (or store) mapping information between the commands and corresponding responses, and the second device 220 may determine a corresponding response based on the mapping information. In addition, the second device 220 may determine the status information of the data based on the corresponding response.
[0133] In some other examples, the service request may include service response information of the inventory service or the command service from the first device 210. For example, the service response information for an inventory service may be “device ID” . For example, the service response information for a “read” command may be the data collected from the first device. For example, the service response information for a “write” command may be “ACK” or “NACK” . For example, the service response information for a “enable / disable” command may be no response. For example, the CN entity 230 may indicate the service response information from the first device 210 directly, such as device ID, command response, or even no response, etc., and the second device 220 may derive a size of the response. In some examples, the second device 220 may determine the status information of the data based on the service response information.
[0134] After determining the status information of the data at 520, the second device 220 may determine a resource based on the statue information. At 530, the second device 220 transmits resource information for a transmission of the data to the first device 210. In some examples, the second device 220 may allocate a suitable resource to the first device 210 for data transmission. Accordingly, the first device 210 transmits the data at 540 by using the resource.
[0135] According to some embodiments with reference to FIG. 5, the CN entity may implicitly or explicitly indicates status information of data to be transmitted from the first device to the second device, and accordingly the second device may allocate a suitable resource for the data transmission. Thus the data transmission of the first device can be enabled by using the allocated resource. As such, a mechanism and corresponding signalling are defined for determining a resource for D2R data transmission, and the ambient IoT communication can be guaranteed.
[0136] FIG. 6 illustrates a further signalling chart illustrating communication process 600 in accordance with some example embodiments of the present disclosure. The process 600 may involve a first device 210, a second device 220-2 which is a UE, and a serving BS 220-1 of the UE as discussed with reference to FIG. 2A. It would be appreciated that the process 600 may be applied to other communication scenarios, which will not be described in detail. In the process 600, the reader for the first device 210 is a UE, in other words, the second device 220 is a UE reader 220-2. The UE reader 220-2 may request the resource (s) from its serving gNB 220-1. In the present disclosure, the SR / BSR procedure may be used by the UE reader 220-2.
[0137] At 610, the UE reader 220-2 transmits, and the serving BS 220-1 receives, an SR. In some implementations, the SR is transmitted for requesting a BSR transmission.
[0138] In some examples, in case a BSR for ambient IoT communication is triggered and there is no UL-SCH resource, the UE reader 220-2 may transmit the SR. In some examples, in case ambient IoT service-related data (such as D2R data or R2D data) becomes available to a MAC entity, the UE reader 220-2 may transmit the SR. In some examples, in case the UE reader 220-2 needs to allocate a resource for a D2R data transmission, e.g., after receiving status information of data from the first device 210 (that discussed at 310 in FIG. 3) or after determining the status information of the data (that discussed at 520 in FIG. 5) , the UE reader 220-2 may transmit the SR.
[0139] In some implementations, the SR may be a dedicated SR for the ambient IoT transmission. For example, a dedicated SR for ambient IoT data is configured, and the UE reader 220-2 may use the dedicated SR for triggering BSR reporting for ambient IoT data transmission. In some embodiments, the dedicated SR for triggering BSR reporting for ambient IoT data can be specified for inventory service and command service separately, which means the UE reader 220-2 may use the different SRs for triggering BSR reporting for ambient IoT data related to inventory service and for ambient IoT data related to command service. For example, the SR may include a first dedicated SR for ambient IoT data related to inventory service and / or a second dedicated SR for ambient IoT data related to command service. In some embodiments, the dedicated SR for triggering BSR reporting for ambient IoT data can be specified for D2R transmission and R2D transmission separately, which means the UE reader 220-2 may use the different SRs for triggering BSR reporting for ambient IoT data related to D2R transmission and for ambient IoT data related to R2D transmission. For example, the SR may include a third dedicated SR for ambient IoT data related to D2R transmission and / or a fourth dedicated SR for ambient IoT data related to R2D transmission. In some implementations, the SR may be a common SR for both the ambient IoT communication and an uplink / sidelink communication. For example, a legacy SR (which is used for uplink / sidelink data transmission) may be used to trigger BSR reporting for ambient IoT data transmission.
[0140] At 620, the UE reader transmits, and the serving BS receives, a BSR for a resource. In some implementations, the BSR includes a first BSR for a resource for a D2R data transmission and / or a second BSR for a further resource for a R2D data transmission. In some implementations, the BSR includes a common BSR for both a resource for a D2R data transmission and a second BSR for a further resource for a R2D data transmission.
[0141] In some other implementations, the BSR includes a first BSR for a resource for a data transmission related to inventory service and / or a second BSR for a further resource for a data transmission related to command service. In some implementations, the BSR includes a common BSR for both a resource for a data transmission related to inventory service and a second BSR for a further resource for a data transmission related to command service.
[0142] In some examples, the BSR at 620 may also be called as a second request for resource related to ambient IoT communication.
[0143] In some examples, the D2R data transmission may include one or more of: a random access message (e.g., MSG1, MSG3, MSGA) , a data transmission, etc., and the R2D data transmission may include a paging message, a random access message (e.g., MSG2, MSG4, MSGB) , etc.
[0144] In some examples, the BSR may include information about the D2R data and / or the R2D data. For examples, a first data volume of the D2R data may be included in the first BSR, and a second data volume of the R2D data may be included in the second BSR. For example, the first data volume of the D2R data and the second data volume of the R2D data may be included in the common BSR.
[0145] In some implementations, the BSR may be transmitted based one or more of: the data to be transmitted from the first device to the second device becomes available, further data to be transmitted from the second device to the first device becomes available, there is no resource for a transmission of the data, or an allocated resource is not enough for a transmission of the data based on the status information of the data.
[0146] In some examples, if ambient IoT service-related data (such as D2R data or R2D data) becomes available to a MAC entity, the BSR may be triggered or transmitted. In some examples, if a D2R resource has allocated and a resource needed for D2R data transmission is larger than (or not smaller than) the allocated D2R resource, the BSR may be triggered or transmitted. In some examples, the UE reader 220-2 needs to allocate a resource for a D2R data transmission, e.g., after receiving status information of data from the first device 210 (that discussed at 310 in FIG. 3) or after determining the status information of the data (that discussed at 520 in FIG. 5) , the BSR may be triggered or transmitted.
[0147] In the process 600, the serving BS 220-1 may allocate a suitable resource to the UE reader 220-2 at 630. In some examples, the serving BS 220-1 may allocate a resource for D2R data transmission and / or a further resource for R2D data transmission.
[0148] In addition or alternatively, the UE reader 220-2 may transmit resource information to the first device 210 at 640, for example, resource information of the resource may be provided. As such, the first device 210 may perform a D2R data transmission by using the resource.
[0149] FIG. 7 illustrates some examples of BSR 700 in accordance with some example embodiments of the present disclosure. The example 710 may be a schematic of a first BSR, which is used for requesting a resource for D2R data transmission, for example, a buffer size of the D2R data may be included in a field of the first BSR. The example 720 may be a schematic of a second BSR, which is used for requesting a further resource for R2D data transmission, for example, a buffer size of the R2D data may be included in a field of the second BSR. The example 730 may be a schematic of a common BSR, which is used for requesting a resource for D2R data transmission and a further resource for R2D data transmission, for example, a buffer size 1 of the D2R data may be included in a first field of the common BSR and a buffer size 2 of the R2D data may be included in a second field of the common BSR.
[0150] According to some embodiments with reference to FIGS. 6-7, the second device may request resource (s) from its serving BS in case the second device is a UE reader. For example, the SR / BSR procedure may be reused for requesting the resource (s) for R2D and / or D2R data transmission. For example, a solution is proposed for a UE reader to enhance SR / BSR procedure to request the resource (s) for R2D and / or D2R data transmission related to ambient IoT communication. As such, a suitable resource for the R2D and / or D2R data transmission can be determined and allocated. Thus the data transmission of ambient IoT communication can be enabled by using the allocated resource (s) .
[0151] It is to be appreciated that some embodiments are provided with reference to FIGS. 3-7 above, which should be interpreted as examples without limitations. Some other embodiments may also be applied and are also in the protection scope of the present disclosure. In some implementations, the first device 210 may implicitly indicate the status information of the data by other means. In some examples, there may be predefined or configured with a correspondence between (a) one or multiple specific IDs, one or multiple random numbers, or one or more sequences; and (b) the status information of the data, such as a buffer size of data. For example, the first device 210 may transmit a part of data together with one or multiple specific IDs, one or multiple random numbers, or one or more sequences. For example, the first device 210 may transmit a message (such as MSG1, MSG3, or MSGA) during an access procedure by using one or multiple specific IDs, one or multiple random numbers, or one or more sequences. Accordingly, the second device 220 may determine the status information of the data (such as a buffer size of data) based on the correspondence and the one or multiple specific IDs, one or multiple random numbers, or one or more sequences.
[0152] It is to be understood that the processes 300, 500, and 600 are discussed only for illustration without any limitations. In some examples, some steps may be removed, combined, or modified. In some examples, some additional steps may be further included. In some examples, some steps in a process may be combined into another process. It should be noted that some other embodiments are still within the scope of the present disclosure.
[0153] In some embodiments, the process 300 / 500 and the process 600 may be combined. In some examples, the operations 610-630 may be performed after the operation 310 and before the operation 320 if the second device 220 is a UE reader. In some examples, the operations 610-630 may be performed after the operation 520 and before the operation 530 if the second device is a UE reader.
[0154] In some embodiments, the process 300 and the process 500 may be combined, e.g. by being performed in parallel during a same ambient IoT communication procedure. In some examples, the service request from the CN entity 230 to the second device 220 may indicate (implicitly or explicitly) the status information of the data, however, the second device 220 also transmit a first resource or a first request to the first device 210 for requesting the status information of the data from the first device 210. For example, the service request from the CN entity 230 at 510 may include service response information from the first device 210, however the second device 220 is unable to know the status information of the data accurately, and the second device 220 may acquire the status information of the data based on the operation 310 in the process 300. For example, the service request from the CN entity 230 at 510 may implicitly or explicitly indicate a predict data size, and the second device 220 cannot know an exact buffer size of the data, and the second device 220 may acquire the status information of the data based on the operation 310 in the process 300.
[0155] FIG. 8 illustrates an example of a device 800 that is suitable for implementing embodiments of the present disclosure. The device 800 may be an example of a UE or a BS as described herein. The device 800 may support wireless communication with a first device (e.g., an A-IoT device) , a second device (e.g., a gNB or a UE) , a CN entity (e.g., an AIF) , or any combination thereof. The device 800 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 802, a memory 804, a transceiver 806, and, optionally, an I / O controller 808. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0156] The processor 802, the memory 804, the transceiver 806, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. For example, the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
[0157] In some implementations, the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some implementations, the processor 802 and the memory 804 coupled with the processor 802 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 802, instructions stored in the memory 804) .
[0158] For example, the processor 802 may support wireless communication at the device 800 in accordance with examples as disclosed herein. The processor 802 may be configured to operable to support a means for operations discussed above.
[0159] The processor 802 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 implementations, the processor 802 may be configured to operate a memory array using a memory controller. In some other implementations, a memory controller may be integrated into the processor 802. The processor 802 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 804) to cause the device 800 to perform various functions of the present disclosure.
[0160] The memory 804 may include random access memory (RAM) and read-only memory (ROM) . The memory 804 may store computer-readable, computer-executable code including instructions that, when executed by the processor 802 cause the device 800 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 802 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some implementations, the memory 804 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0161] The I / O controller 808 may manage input and output signals for the device 800. The I / O controller 808 may also manage peripherals not integrated into the device 800. In some implementations, the I / O controller 808 may represent a physical connection or port to an external peripheral. In some implementations, the I / O controller 808 may utilize an operating system such as or another known operating system. In some implementations, the I / O controller 808 may be implemented as part of a processor, such as the processor 802. In some implementations, a user may interact with the device 800 via the I / O controller 808 or via hardware components controlled by the I / O controller 808.
[0162] In some implementations, the device 800 may include a single antenna 810. However, in some other implementations, the device 800 may have more than one antenna 810 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 806 may communicate bi-directionally, via the one or more antennas 810, wired, or wireless links as described herein. For example, the transceiver 806 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 806 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 810 for transmission, and to demodulate packets received from the one or more antennas 810. The transceiver 806 may include one or more transmit chains, one or more receive chains, or a combination thereof.
[0163] A transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmit chain may also include one or more antennas 810 for transmitting the amplified signal into the air or wireless medium.
[0164] A receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receive chain may include one or more antennas 810 for receive the signal over the air or wireless medium. The receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0165] FIG. 9 illustrates an example of a processor 900 that is suitable for implementing some embodiments of the present disclosure. The processor 900 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 900 may include a controller 902 configured to perform various operations in accordance with examples as described herein. The processor 900 may optionally include at least one memory 904, such as L1 / L2 / L3 cache. Additionally, or alternatively, the processor 900 may optionally include one or more arithmetic-logic units (ALUs) 906. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0166] The processor 900 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 900) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0167] The controller 902 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 900 to cause the processor 900 to support various operations in accordance with examples as described herein. For example, the controller 902 may operate as a control unit of the processor 900, generating control signals that manage the operation of various components of the processor 900. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0168] The controller 902 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 904 and determine subsequent instruction (s) to be executed to cause the processor 900 to support various operations in accordance with examples as described herein. The controller 902 may be configured to track memory address of instructions associated with the memory 904. The controller 902 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 902 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 900 to cause the processor 900 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 902 may be configured to manage flow of data within the processor 900. The controller 902 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 900.
[0169] The memory 904 may include one or more caches (e.g., memory local to or included in the processor 900 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 904 may reside within or on a processor chipset (e.g., local to the processor 900) . In some other implementations, the memory 904 may reside external to the processor chipset (e.g., remote to the processor 900) .
[0170] The memory 904 may store computer-readable, computer-executable code including instructions that, when executed by the processor 900, cause the processor 900 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 902 and / or the processor 900 may be configured to execute computer-readable instructions stored in the memory 904 to cause the processor 900 to perform various functions. For example, the processor 900 and / or the controller 902 may be coupled with or to the memory 904, the processor 900, the controller 902, and the memory 904 may be configured to perform various functions described herein. In some examples, the processor 900 may include multiple processors and the memory 904 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0171] The one or more ALUs 906 may be configured to support various operations in accordance with examples as described herein. In some implementations, the one or more ALUs 906 may reside within or on a processor chipset (e.g., the processor 900) . In some other implementations, the one or more ALUs 906 may reside external to the processor chipset (e.g., the processor 900) . One or more ALUs 906 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 906 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 906 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 906 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 906 to handle conditional operations, comparisons, and bitwise operations.
[0172] The processor 900 may support wireless communication in accordance with examples as disclosed herein. The processor 900 may be configured to or operable to support a means for operations described in some embodiments of the present disclosure.
[0173] FIG. 10 illustrates a flowchart of a method 1000 performed by a first device in accordance with aspects of the present disclosure. The operations of the method 1000 may be implemented by a device or its components as described herein. For example, the operations of the method 1000 may be performed by the A-IoT device 210 in FIG. 2A. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0174] At 1010, the method may include transmitting, to a second device, status information of data that is to be transmitted to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication. The operations of 1010 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1010 may be performed by the A-IoT device 210 as described with reference to FIG. 2A.
[0175] At 1020, the method may include receiving, from the second device, resource information for a transmission of the data. The operations of 1020 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1020 may be performed by the A-IoT device 210 as described with reference to FIG. 2A.
[0176] At 1030, the method may include transmitting, to the second device, the data by using the resource. The operations of 1030 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1030 may be performed by the A-IoT device 210 as described with reference to FIG. 2A.
[0177] FIG. 11 illustrates a flowchart of a method 1100 performed by a second device in accordance with aspects of the present disclosure. The operations of the method 1100 may be implemented by a device or its components as described herein. For example, the operations of the method 1100 may be performed by the second device 220 in FIG. 2A. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0178] At 1110, the method may include receiving, from a first device or a core network entity, status information of data that is to be transmitted from the first device to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient IoT communication. The operations of 1110 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1110 may be performed by the second device 220 as described with reference to FIG. 2A.
[0179] At 1120, the method may include transmitting, to the first device, resource information for a transmission of the data. The operations of 1120 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1120 may be performed by the second device 220 as described with reference to FIG. 2A.
[0180] At 1130, the method may include receiving, from the first device, the data by using the resource. The operations of 1130 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1130 may be performed by the second device 220 as described with reference to FIG. 2A.
[0181] FIG. 12 illustrates a flowchart of a method 1200 performed by a core network entity in accordance with aspects of the present disclosure. The operations of the method 1200 may be implemented by a device or its components as described herein. For example, the operations of the method 1200 may be performed by the CN entity 230 in FIG. 2A. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0182] At 1210, the method may include transmitting, to a second device, a service request associated with the first device, wherein the service request indicates at least one of an inventory service or a command service, and wherein the service request explicitly or implicitly indicates the status information of the data. The operations of 1210 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1210 may be performed by the CN entity 230 as described with reference to FIG. 2A.
[0183] It should be noted that the methods described herein describes possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0184] The various illustrative blocks and components described in connection 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 the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
[0185] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0186] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
[0187] As used herein, including in the claims, an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” or “one or both of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. Further, as used herein, including in the claims, a “set” may include one or more elements.
[0188] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A first device comprising:at least one memory; andat least one processor coupled with the at least one memory and configured to cause the first device to:transmit, to a second device, status information of data that is to be transmitted to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient internet of things (IoT) communication;receive, from the second device, resource information for a transmission of the data; andtransmit, to the second device, the data by using the resource.2.The first device of claim 1, wherein the at least one processor is configured to cause the first device to:receive, from the second device, a first resource with a first size; anddetermine that the first resource is not enough for transmitting the data.3.The first device of claim 2, wherein a part of the data along with the status information of the data is transmitted by using the first resource, or wherein the status information of the data is transmitted by using the first resource.4.The first device of claim 1, wherein the at least one processor is configured to cause the first device to:receive, from the second device, a first request for the status information of the data, wherein the first request is carried in one of:an initial trigger message,an ambient IoT paging message,an access trigger message, ora further reader-to-device (R2D) message.5.The first device of claim 1, wherein the status information of the data comprises one of: a buffer size of the data, or at least one indication related to the data.6.The first device of claim 5, wherein the buffer size of the data comprises one of:a number of bits indicating the buffer size,a range of bits within which the buffer size is, ora level of the buffer size.7.The first device of claim 5, wherein the at least one indication comprises one of:a segmentation number indication, which is used for indicating a number of segments for a data transmission,a follow-up indication, which is used for indicating whether there is a subsequent data transmission after a current transmission, oran end indication, which is used for indicating whether the current transmission is a last transmission.8.The first device of claim 1, wherein the status information of the data is carried in one of:a message of a medium access control (MAC) layer,a message of a dedicated access stratum (AS) ambient IoT layer, ormessage 1 or message A or message 3 during an access procedure.9.The first device of claim 8, wherein the status information is included in a dedicated field of a MAC control element (CE) or a MAC packet data unit (PDU) message generated in a MAC layer, and wherein the dedicated field comprises one or multiple bits for carrying the status information of the data.10.The first device of claim 1, wherein the data comprises at least one of:a MAC layer data,an application layer data,a dedicated AS layer data,an ambient IoT layer data,data for a current transmission,data for a subsequent transmission,data for a segmented transmission,data for an initial transmission, ordata for a retransmission.11.A second device comprising:at least one memory; andat least one processor coupled with the at least one memory and configured to cause the second device to:receive, from a first device or a core network entity, status information of data that is to be transmitted from the first device to the second device, wherein the data is associated with at least one of an inventory service or a command service related to ambient internet of things (IoT) communication;transmit, to the first device, resource information for a transmission of the data; andreceive, from the first device, the data by using the resource.12.The second device of claim 11, wherein the at least one processor is configured to cause the second device to:transmit, to the first device, a first request for the status information of the data, wherein the first request is carried in one of:an initial trigger message,an ambient IoT paging message,an access trigger message, ora further reader-to-device (R2D) message.13.The second device of claim 11, wherein the at least one processor is configured to cause the second device to:receive, from the core network entity, a service request associated with the first device, wherein the service request indicates at least one of the inventory service or the command service, and wherein the service request explicitly or implicitly indicates the status information of the data.14.The second device of claim 13, wherein the service request comprises command information of the command service, and wherein the at least one processor is configured to cause the second device to:determine the status information of the data based on the command information of the command service and pre-stored mapping information.15.The second device of claim 13, wherein the service request comprises service response information of the inventory service or the command service from the first device, or wherein the service request comprises the status information of the data, and wherein the at least one processor is configured to cause the second device to:determine the status information of the data based on the service request.16.The second device of claim 11, wherein the second device is user equipment (UE) , and the at least one processor is further configured to cause the second device to:transmit, to a serving base station of the UE, a second request for at least one of: a resource for a transmission from the first device to the second device, or a further resource for a further transmission from the second device to the first device; andreceive, from the serving base station, one of the resource and the further resource.17.The second device of claim 16, wherein the second request is implemented as a common buffer status report (BSR) for both the resource and the further resource, orwherein the second request is implemented as a first BSR for the resource and a second BSR for the further resource.18.The second device of claim 16, wherein the at least one processor is further configured to cause the second device to:transmit, to the serving base station, a scheduling request (SR) for a transmission of the second request.19.The second device of claim 18, wherein the SR comprises:a dedicated SR for the ambient IoT communication, ora common SR for both the ambient IoT communication and an uplink or sidelink communication.20.The second device of claim 16, wherein the second request is transmitted based on of:the data to be transmitted from the first device to the second device becomes available,further data to be transmitted from the second device to the first device becomes available,there is no resource for a transmission of the data, oran allocated resource is not enough for a transmission of the data based on the status information of the data.
Citation Information
Patent Citations
Scheduling request method and device
CN110351773A
Sending method and device, communication equipment, communication system and storage medium
CN118140520A
State switching for passive terminal device
WO2024002472A1
Resource determination method and apparatus
WO2024140733A1