Method performed by node in wireless communication system and associated device

Abstract

The present disclosure relates to 4G, 5G, or 6G communication systems. Specifically, embodiments of the present disclosure provide a method performed by a node in a wireless communication system and an associated device. In the method, an A-IoT signaling or data transmission scheme is proposed, the method comprises: determining, by a third node, a random access preset value based on a first value related to random access received from a second node or first configuration information related to determining a value for the random access, or transmitting seventh information to the second node by the third node, and receiving eighth information transmitted by the second node based on the random access preset value determined by the seventh information, the eighth information comprising information related to the random access preset value; and transmitting the determined information related to the random access preset value to a fourth node. The present disclosure ensures that an A-IoT device transmits signaling or data on suitable resources.

Description

METHOD PERFORMED BY NODE IN WIRELESS COMMUNICATION SYSTEM AND ASSOCIATED DEVICE

[0001] The present disclosure relates to the field of wireless communication technology, and more specifically, to a method performed by a node in a wireless communication system and an associated device.

[0002] 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in "Sub 6GHz" bands such as 3.5GHz, but also in "Above 6GHz" bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies.

[0003] At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service.

[0004] Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning.

[0005] Moreover, there has been ongoing standardization in air interface architecture / protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture / service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions.

[0006] As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication.

[0007] Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and AI (Artificial Intelligence) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.

[0008] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called "Beyond 4G networks" or "Post-LTE systems".

[0009] Wireless communication is one of the most successful innovations in modern history. The number of subscribers to wireless communication services recently exceeded 5 billion and continues to grow rapidly. The demand for wireless data services is growing rapidly due to the increasing popularity of smart phones and other mobile data devices (e.g., tablet computers, notebook computers, netbooks, e-book readers, and machine-type devices) among consumers and businesses. To meet the high growth rate of mobile data services and support new applications and deployments, it is critical to improve the efficiency and coverage of the wireless interface.

[0010] Embodiments of the present disclosure provide methods performed by a node in a wireless communication system and associated devices.

[0011] The technical subjects pursued in the disclosure may not be limited to the above-mentioned technical subjects, and other technical subjects which are not mentioned may be clearly understood, through the following descriptions, by those skilled in the art to which the disclosure pertains.

[0012] The technical solutions provided by the embodiments of the present disclosure are as follows:

[0013] In a first aspect, an embodiment of the present disclosure provides a method performed by a third node in a wireless communication system, comprising:

[0014] determining a random access preset value based on a first value related to random access received from a second node or first configuration information related to determining a value for the random access, or transmitting seventh information to the second node, and receiving eighth information transmitted by the second node based on the random access preset value determined by the seventh information, the eighth information comprising information related to the random access preset value; and

[0015] transmitting the determined information related to the random access preset value to a fourth node,

[0016] wherein the first configuration information comprises at least one of the following:

[0017] information for indicating to update the random access preset value;

[0018] a threshold value for number of conflicts;

[0019] an idle-related threshold value; or

[0020] an amount of change in the random access preset value,

[0021] wherein the seventh information comprises at least one of the following:

[0022] information related to a third value related to the random access;

[0023] information related to the number of conflicts;

[0024] idle time related information;

[0025] idle ratio related information;

[0026] information related to the number of conflicts having reached a threshold value;

[0027] information related to the idle time having reached a threshold value;

[0028] information related to number of idle times having reached a threshold value; or

[0029] information related to the idle ratio having reached a threshold value.

[0030] In a feasible embodiment, the method further comprises:

[0031] transmitting first information to the second node, the first information comprising information relating to the capability of the third node to support being an intermediate user equipment.

[0032] In a feasible embodiment, the method further comprises:

[0033] receiving second information transmitted by the second node;

[0034] wherein the second information comprises at least one of the following:

[0035] resource pool related information;

[0036] radio bearer related information;

[0037] a list of preamble related information; or

[0038] first configuration information related to determining a preset value for the random access.

[0039] In a feasible embodiment, the method further comprises:

[0040] receiving fourth information transmitted by the second node;

[0041] wherein the fourth information comprises at least one of the following:

[0042] a session identity;

[0043] a paging reason / cause;

[0044] group related information comprising information related to a group of Ambient Internet-of-Things (A-IoT) devices;

[0045] the random access preset value related information;

[0046] a list of preamble related information;

[0047] first configuration information related to determining a preset value for the random access;

[0048] a first logical channel identity;

[0049] a first mapped session identity; or

[0050] first resource related information.

[0051] In a feasible embodiment, the method further comprises:

[0052] receiving tenth information transmitted by the fourth node, the tenth information comprising a first random sequence;

[0053] transmitting eleventh information to the fourth node, the eleventh information comprising at least one of a second value related to a fallback operation, a first random sequence, or third resource related information, the third resource comprising carrier related information needed to be received by the fourth node.

[0054] In a feasible embodiment, the method further comprises:

[0055] receiving a first local identity transmitted by the second node; and

[0056] transmitting the first local identity to the fourth node,

[0057] wherein the first local identity is used to uniquely identify an A-IoT device within the second node or within the third node.

[0058] In a feasible embodiment, the first local identity is assigned to the A-IoT device by the second node upon receipt of twelfth information,

[0059] wherein the twelfth information comprises at least one of the following:

[0060] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity; and

[0061] A-IoT device related information.

[0062] In a feasible embodiment, the method further comprises:

[0063] receiving fourteenth information transmitted by the second node; and / or

[0064] transmitting sixteenth information to the second node,

[0065] wherein the fourteenth information comprises at least one of the following:

[0066] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0067] a non-access stratum message related information element or a non-access stratum packet data unit;

[0068] a first local identity which identifies the fourth node; or

[0069] fourth resource related information,

[0070] wherein the sixteenth information comprises at least one of the following:

[0071] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0072] a non-access stratum message related information element or a non-access stratum packet data unit; or

[0073] a first local identity which identifies the fourth node.

[0074] In a second aspect, an embodiment of the present disclosure provides a method performed by a fourth node in a wireless communication system, comprising:

[0075] receiving a determined random access preset value from a third node; and

[0076] performing random access based on the determined random access preset value,

[0077] wherein the random access preset value comprises one of the following:

[0078] a random access preset value determined by the third node based on a first value related to random access received from the second node or first configuration information related to determining a value for the random access; and

[0079] a random access preset value determined by the second node based on seventh information received from the third node, wherein information related to the random access preset value is transmitted by the second node to the third node via eighth information,

[0080] wherein the first configuration information comprises at least one of the following:

[0081] information for indicating to update the random access preset value;

[0082] a threshold value for number of conflicts;

[0083] an idle-related threshold value; or

[0084] an amount of change in the random access preset value,

[0085] wherein the seventh information comprises at least one of the following:

[0086] information related to a third value related to random access;

[0087] information related to the number of conflicts;

[0088] idle time related information;

[0089] idle ratio related information;

[0090] information related to the number of conflicts having reached a threshold value;

[0091] information related to the idle time having reached a threshold value;

[0092] information related to number of idle times having reached a threshold value; or

[0093] information related to the idle ratio having reached a threshold value.

[0094] In a feasible embodiment, the method further comprises:

[0095] receiving fifth information transmitted by the third node, the fifth information comprising at least one of session related information, the random access preset value related information, second resource related information, a list of preamble related information, or group related information comprising information related to a group of A-IoT devices;

[0096] receiving at least one piece of sixth information transmitted by the third node, the sixth information comprising the session related information; and

[0097] receiving ninth information transmitted by the third node, the ninth information comprising at least one of the session related information and information related to an update of the random access preset value.

[0098] In a feasible embodiment, the method further comprises:

[0099] transmitting tenth information to the third node according to the second resource related information comprised in the fifth information; and

[0100] receiving eleventh information transmitted by the third node,

[0101] wherein the tenth information comprises at least one of a first preamble sequence and a first random sequence, and the eleventh information comprises at least one of a second value related to a fallback operation, an identity corresponding to the first preamble sequence or the first preamble sequence, the first random sequence, or third resource related information.

[0102] In a feasible embodiment, the method further comprises:

[0103] receiving a first local identity transmitted by the third node, wherein the first local identity is transmitted to the third node after being assigned to the A-IoT device by the second node, and is used to uniquely identify the A-IoT device within the second node or within the third node.

[0104] In a feasible embodiment, the method further comprises:

[0105] receiving fifteenth information transmitted by the third node;

[0106] wherein the fifteenth information comprises at least one of the following:

[0107] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0108] a non-access stratum message related information element or a non-access stratum packet data unit;

[0109] a first local identity which identifies the fourth node; or

[0110] fifth resource related information.

[0111] In a third aspect, an embodiment of the present disclosure provides a method performed by a second node in a wireless communication system, comprising:

[0112] receiving seventh information transmitted by a third node, and determining a random access preset value according to the seventh information; and

[0113] transmitting eighth information to the third node, the eighth information comprising information related to the random access preset value,

[0114] wherein the seventh information comprises at least one of the following:

[0115] information related to a third value related to random access;

[0116] information related to the number of conflicts;

[0117] idle time related information;

[0118] idle ratio related information;

[0119] information related to the number of conflicts having reached a threshold value;

[0120] information related to the idle time having reached a threshold value;

[0121] information related to number of idle times having reached a threshold value; or

[0122] information related to the idle ratio having reached a threshold value.

[0123] In a feasible embodiment, the method further comprises:

[0124] receiving first information transmitted by the third node, the first information comprising information relating to the capability of the third node to support being an intermediate user equipment; and

[0125] transmitting second information to the third node according to the first information,

[0126] wherein the second information comprises at least one of the following:

[0127] resource pool related information;

[0128] radio bearer related information;

[0129] a list of preamble related information; or

[0130] first configuration information related to determining a preset value for random access.

[0131] In a feasible embodiment, the method further comprises:

[0132] transmitting fourth information to the third node;

[0133] wherein the fourth information comprises at least one of the following:

[0134] a session identity;

[0135] a paging reason / cause;

[0136] group related information comprising information related to a group of A-IoT devices;

[0137] the random access preset value related information;

[0138] a list of preamble related information;

[0139] first configuration information related to determining a preset value for random access;

[0140] a first logical channel identity;

[0141] a first mapped session identity; or

[0142] first resource related information.

[0143] In a feasible embodiment, the method further comprises:

[0144] assigning a first local identity to an A-IoT device, the first local identity being used to uniquely identify the A-IoT device within the second node or within the third node; and

[0145] transmitting the first local identity to the third node.

[0146] In a feasible embodiment, the method further comprises:

[0147] receiving third information transmitted by the first node;

[0148] wherein the third information comprises at least one of the following:

[0149] a session identity or a service identity;

[0150] a request or indication or a paging reason / cause;

[0151] a service area or a paging area;

[0152] group related information comprising information related to a group of A-IoT devices; or

[0153] inventory related information.

[0154] In a feasible embodiment, the method further comprises:

[0155] receiving thirteenth information transmitted by the first node; and

[0156] transmitting fourteenth information to the third node according to the thirteenth information,

[0157] wherein the thirteenth information comprises at least one of a session identity, a non-access stratum message related information element or a non-access stratum packet data unit, or a fourth node response related information,

[0158] wherein the fourteenth information comprises at least one of the following:

[0159] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0160] a non-access stratum message related information element or a non-access stratum packet data unit;

[0161] a first local identity which identifies the fourth node; or

[0162] fourth resource related information.

[0163] In a fourth aspect, an embodiment of the present disclosure provides a method performed by a third node in a wireless communication system, comprising:

[0164] receiving eighteenth information transmitted by a second node; and

[0165] transmitting nineteenth information to a fourth node according to the eighteenth information,

[0166] wherein the eighteenth information comprises at least one of the following:

[0167] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0168] inventory time window related information;

[0169] a second duration related to not to respond to some or all of inventories again; or

[0170] group related information comprising information related to a group of A-IoT devices,

[0171] wherein, the nineteenth information comprises at least one of the following:

[0172] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0173] a third duration related to not to respond to some or all of the inventories again;

[0174] group related information comprising information related to a group of A-IoT devices; or

[0175] a reader identity.

[0176] In a fifth aspect, an embodiment of the present disclosure provides a method performed by a fourth node in a wireless communication system, comprising:

[0177] receiving nineteenth information transmitted by a second node and / or a third node, wherein the nineteenth information comprises a third duration related to not to respond to some or all of inventories again; and

[0178] starting or restarting a timer based on the third duration in the nineteenth information,

[0179] wherein the nineteenth information further comprises at least one of the following:

[0180] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0181] a third duration related to not to respond to some or all of the inventories again;

[0182] group related information comprising information related to a group of A-IoT devices; or

[0183] a reader identity.

[0184] In a feasible embodiment, the method further comprises:

[0185] the starting or restarting a timer based on the third duration in the nineteenth information by the fourth node is started or restarted after transmitting the A-IoT device related information to the third node and / or completing an operation related to the A-IoT device.

[0186] In a feasible embodiment, the method further comprises:

[0187] when the timer has not expired, the fourth node no longer initiates a new random access procedure with respect to at least one of the following:

[0188] a received inventory related message;

[0189] a received inventory related message comprising the same session related information;

[0190] a received inventory related message comprising the same group related information; or

[0191] a received inventory related message comprising the same reader identity.

[0192] In a sixth aspect, an embodiment of the present disclosure provides a method performed by a second node in a wireless communication system, comprising:

[0193] receiving seventeenth information transmitted by a first node, and transmitting eighteenth information to a third node according to the seventeenth information; and / or

[0194] transmitting nineteenth information to a fourth node,

[0195] wherein the seventeenth information comprises at least one of the following:

[0196] a session identity;

[0197] a service area;

[0198] at least one reader related identity;

[0199] at least one time window related information;

[0200] a first duration related to not to respond to some or all of inventories again; or

[0201] group related information comprising information related to a group of A-IoT devices,

[0202] wherein the eighteenth information comprises at least one of the following:

[0203] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0204] inventory time window related information for providing time window information related to the inventories;

[0205] a second duration related to not to respond to some or all of the inventories again; or

[0206] group related information comprising information related to a group of A-IoT devices,

[0207] wherein the nineteenth information comprising at least one of the following:

[0208] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0209] a third duration related to not to respond to some or all of the inventories again;

[0210] group related information comprising information related to a group of A-IoT devices; or

[0211] a reader identity.

[0212] In a feasible embodiment, the first node comprises a core network or an access and mobility management function entity (AMF), the second node comprises a base station, the third node comprises an intermediate user equipment, and the fourth node comprises an A-IoT device.

[0213] In a seventh aspect, an embodiment of the present disclosure further provides a node in a wireless communication system, comprising: at least one transceiver; and at least one processor coupled to the at least one transceiver, the at least one processor being configured to perform the method performed by the node provided by any embodiment of the present disclosure.

[0214] In an eighth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium having stored therein a computer program, that when executed in a processor, causes the processor to perform the steps of the method provided by any embodiment of the present disclosure.

[0215] In a ninth aspect, an embodiment of the present disclosure further provides a computer program product comprising a computer program, that when executed by a processor, implements the steps of the method provided by any embodiment of the present disclosure.

[0216] Embodiments of the present disclosure provide methods performed by a node in a wireless communication system and associated devices.

[0217] Advantageous effects obtainable from the disclosure may not be limited to the above - mentioned effects, and other effects which are not mentioned may be clearly understood from the following descriptions by those skilled in the art to which the disclosure pertains.

[0218] Fig. 1 illustrates a schematic diagram of an architecture of a wireless communication system to which the embodiments of the present disclosure apply;

[0219] Fig. 2 illustrates a schematic diagram of a structure of an example base station according to the present disclosure;

[0220] Fig. 3 illustrates a flowchart of a method performed by a third node according to an embodiment of the present disclosure;

[0221] Fig. 4 illustrates a flowchart of a method performed by a fourth node according to an embodiment of the present disclosure;

[0222] Fig. 5 illustrates a flowchart of a method performed by a second node according to an embodiment of the present disclosure;

[0223] Fig. 6 illustrates a flowchart of a method performed by a third node according to an embodiment of the present disclosure;

[0224] Fig. 7 illustrates a flowchart of a method performed by a fourth node according to an embodiment of the present disclosure;

[0225] Fig. 8 illustrates a flowchart of a method performed by a second node according to an embodiment of the present disclosure;

[0226] Fig. 9 illustrates an example of A-IoT signaling or data transmission according to an embodiment of the present disclosure;

[0227] Fig. 10 illustrates another example of A-IoT signaling or data transmission according to an embodiment of the present disclosure; and

[0228] Fig. 11 illustrates a schematic diagram of a structure of an electronic device according to an embodiment of the present disclosure.

[0229] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0230] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0231] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0232] The term "include" or "may include" refers to the existence of a corresponding disclosed function, operation or component which can be used in various embodiments of the present disclosure and does not limit one or more additional functions, operations, or components. The terms such as "include" and / or "have" may be construed to denote a certain characteristic, number, step, operation, constituent element, component or a combination thereof, but may not be construed to exclude the existence of or a possibility of addition of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0233] The term "or" used in various embodiments of the present disclosure includes any or all of combinations of listed words. For example, the expression "A or B" may include A, may include B, or may include both A and B.

[0234] Unless defined differently, all terms used herein, which include technical terminologies or scientific terminologies, have the same meaning as that understood by a person skilled in the art to which the present disclosure belongs. Such terms as those defined in a generally used dictionary are to be interpreted to have the meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted to have ideal or excessively formal meanings unless clearly defined in the present disclosure.

[0235] The advantages and features of the disclosure and ways to achieve them will be apparent by making reference to embodiments as described below in detail in conjunction with the accompanying drawings. However, the disclosure is not limited to the embodiments set forth below, but may be implemented in various different forms. The following embodiments are provided only to completely disclose the disclosure and inform those skilled in the art of the scope of the disclosure, and the disclosure is defined only by the scope of the appended claims. Throughout the disclosure, the same or like reference numerals designate the same or like elements.

[0236] Herein, it will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks. These computer program instructions may also be stored in a computer usable or computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer usable or computer-readable memory produce an article of manufacture including instruction means that implement the function specified in the flowchart block or blocks. The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions that execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks.

[0237] Furthermore, each block in the flowchart illustrations may represent a module, segment, or portion of code, which includes one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks may occur out of the order. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.

[0238] As used in embodiments of the disclosure, the term "unit" refers to a software element or a hardware element, such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), and the "unit" may perform certain functions. However, the "unit" does not always have a meaning limited to software or hardware. The "unit" may be constructed either to be stored in an addressable storage medium or to execute one or more processors. Therefore, the "unit" includes, for example, software elements, object-oriented software elements, class elements or task elements, processes, functions, properties, procedures, sub-routines, segments of a program code, drivers, firmware, micro-codes, circuits, data, database, data structures, tables, arrays, and parameters. The elements and functions provided by the "unit" may be either combined into a smaller number of elements, or a "unit", or divided into a larger number of elements, or a "unit". Moreover, the elements and "units" may be implemented to reproduce one or more CPUs within a device or a security multimedia card.

[0239] Particular terms as used in the following description are merely provided to help understanding pf the disclosure, and other types of terms may be used without departing from the scope of the technical idea of the disclosure.

[0240] As used herein, terms referring to network entities, terms referring to messages, terms referring to identification information, and the like are illustratively used for the sake of descriptive convenience. Therefore, the disclosure is not limited by the terms as described below, and other terms referring to subjects having equivalent technical meanings may also be used.

[0241] In the following description, the disclosure will be described using terms and names defined in the 5G system standards for the sake of descriptive convenience, but the disclosure is not limited by these terms and names and may be applied in the same way to systems that conform other standards.

[0242] Figs. 1 to 2 discussed below and the various embodiments used to describe the principles of the present disclosure in this patent document are for illustrative purposes only and should not be construed in any way as limiting the scope of the present disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device.

[0243] Fig. 1 is an exemplary system architecture 200 according to various embodiments of the present disclosure. It is able to use other embodiments of the system architecture 200 without departing from the scope of the present disclosure. A user equipment (UE) 201 is a terminal device used to receive data. A next-generation radio access network (NG-RAN) 202 is a wireless access network that includes a base station (gNB or an eNB connected to a 5G core network 5GC, the eNB connected to a 5GC is also called a ng-gNB) that provides an interface for the UE to access the wireless network. An access control and mobility management function entity (AMF) 203 is responsible for managing the UE's mobility context, and security information. A user plane function entity (UPF) 204 mainly provides user plane functions. A session management function entity (SMF) 205 is responsible for session management. A data network (DN) 206 comprises, e.g., operator's services, Internet access, and third-party services, and the like.

[0244] In the NR system, in order to support network function virtualization, more efficient resource management and scheduling, the base station (gNB / ng-eNB) providing the wireless network interface to the terminal (UE) can be further divided into a central unit, gNB-CU / ng-eNB-CU (gNB central unit / ng-eNB central unit), and a distributed unit, gNB -DU / ng-eNB-DU (gNB distributed unit / ng-eNB distributed unit) (simply referred to as CU and DU herein), as shown in Fig. 2(a). The gNB-CU has radio resource control (RRC), service data adaptation protocol (SDAP), and packet data convergence protocol (PDCP) protocol layers, etc., and the ng-eNB-CU has RRC, PDCP layers. The gNB-DU / ng-eNB-DU has radio link control protocol (RLC), medium access control (MAC), and physical layer, and the like. The gNB-CU and the gNB-DU have a standardized public interface F1, while the ng-eNB-CU and the ng-eNB-DU have a standardized public interface W1. The F1 interface is divided into a control plane F1-C and a user plane F1-U. The transport network layer of F1-C is based on IP transmission. For more reliable transmission of signaling, a SCTP protocol is added on top of IP. The application layer protocol is F1AP, see 3GPP TS38.473. The SCTP may provide reliable application layer message transmission. The transport layer of F1-U is UDP / IP, and GTP-U is used on top of UDP / IP to carry user-plane protocol data units (PDUs). Further, for the gNB-CU as shown in Fig. 2(b), the gNB-CU may comprise gNB-CU-CP (control plane portion of the central unit of the base station) and gNB-CU-UP (user plane portion of the central unit of the base station), while the gNB-CU-CP comprises the control plane functions of the base station with RRC and PDCP protocol layers, and the gNB-CU-UP comprises the user plane functions of the base station with SDAP and PDCP protocol layers. The gNB-CU-CP and the gNB-CU-UP have a standardized public interface E1 with protocol E1AP, see 3GPP TS38.463. The interface between the control-plane portion of the central unit of the base station and the distribution unit of the base station is the F1-C interface, i.e. the control-plane interface of F1, and the interface between the user-plane portion of the central unit of the base station and the distribution unit of the base station is the F1-U interface, i.e. the user-plane interface of F1. In addition, in the NR system, the base station that provides the E-UTRA user plane and control plane for accessing the 5G core network is called ng-eNB, and in order to support virtualization, this type of base station (ng-eNB) can be further divided into a central unit, ng-eNB-CU (gNB central unit / ng-eNB central unit), and a distributed unit, ng-eNB-DU (gNB distributed unit / ng-eNB distributed unit) (simply referred to as CU and DU herein), as shown in Fig. 2(c). The ng-eNB-CU has RRC, PDCP layer. The gNB-DU / ng-eNB-DU has radio link control protocol (RLC), medium access control (MAC) and physical layers, and the like. The ng-eNB-CU and the ng-eNB-DU have a standardized public interface W1. The W1 interface is divided into a control plane W1-C and a user plane W1-U. The transport network layer of W1-C is based on IP transmission. For more reliable transmission of signaling, a SCTP protocol is added on top of IP. The application layer protocol is W1AP, see 3GPP TS37.473. The transport layer of W1-U is UDP / IP, and GTP-U is used on top of UDP / IP to carry user plane protocol data units (PDUs).

[0245] Currently, A-IoT technology is just in the beginning stage of research. The present disclosure may relate to A-IoT signaling or data transmission.

[0246] Exemplary embodiments of the present disclosure are further described below in conjunction with the accompanying drawings.

[0247] The text and the accompanying drawings are provided as examples only to aid in understanding the present disclosure. They should not be construed to limit the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, based on what is disclosed herein, it will be apparent to those skilled in the art that changes can be made to the shown embodiments and examples without departing from the scope of the present disclosure.

[0248] Before describing the specifics, some assumptions and some definitions of the present disclosure are given below.

[0249] The message names in this disclosure are only examples, and other message names may also be used.

[0250] The "first", "second", etc. included in the message names of the present disclosure are only examples of messages and do not represent the order of execution.

[0251] Detailed descriptions of steps unrelated to the present disclosure are omitted in the present disclosure.

[0252] In the present disclosure, the steps in each process may be executed in combination with each other or separately. The execution steps of the processes are only examples and do not exclude other possible orders of execution.

[0253] In the present disclosure, the base station may be a 5G base station (e.g., gNB, ng-eNB), a 4G base station (e.g., eNB), a 6G base station, or other types of access nodes.

[0254] In the present disclosure, the transmission of data refers to the reception or transmission of data.

[0255] The following is an illustrative example for the nodes involved in the present disclosure.

[0256] First node: may be a core network or an access and mobility management function (AMF).

[0257] Second node: may be a base station.

[0258] Third node: may be an intermediate user equipment, or an intermediate node, or a read node, or a read user equipment. It should be noted that the names of the third node involved in the present disclosure include, but are not limited to, the above names, and will be described hereinafter unitedly using the "intermediate user equipment" as an example.

[0259] Fourth node: A-IoT device.

[0260] As 5G commercial networks (NR: New Radio access network) are gradually maturing, research on Ambient Internet-of-Things (Ambient IoT, A-IoT) technology has been conducted, but the related technology still needs to be improved.

[0261] The present disclosure provides a method of signaling or data transmission for A-IoT, which ensures that an A-IoT device transmits signaling or data on suitable resources by means of interactions between nodes.

[0262] A method performed by a third node in a wireless communication system according to an embodiment of the present disclosure is described below in connection with Fig. 3.

[0263] Optionally, the method comprises one scheme corresponding to S101 and S104, or comprises another scheme corresponding to S102, S103 and S104.

[0264] In a feasible embodiment, the determination of a random access preset value may be achieved by the third node in the scheme corresponding to S101 and S104, as follows:

[0265] At S101, the random access preset value is determined based on a first value related to random access received from a second node or first configuration information related to determining a value for the random access.

[0266] At S104, the determined information related to the random access preset value is transmitted to a fourth node.

[0267] Optionally, the random access may involve a process in which a device effectively accesses a network and communicates with other devices, and accordingly, the random access preset value may be different depending on the type of device, the application scenario, the network architecture, and other factors. Exemplarily, the random access preset value may include parameters such as an access frequency, an access priority, an access latency, an access success rate, and the like, and the setting of the parameters may be carried out in consideration of factors such as the congestion situation of the network, the sparse characteristics of the device, and the needs of the application scenario. The random access preset value may be adjusted and optimized according to the actual request, and the embodiments of the present disclosure are not limited thereto.

[0268] Optionally, for the first value related to the random access provided by the second node, since it relates to specific network configurations and device parameters, it may be set according to specific network environments and device performances to ensure the stability and performance of the network. It is to be understood that the first value related to the random access provided by the second node is used to provide the third node with parameters related to the random access for reference, suggestion, recommendation, and the like.

[0269] Optionally, the first configuration information related to determining the preset value for random access may comprise at least one of information for indicating to update the preset value for random access, a threshold value for number-of-times of conflicts, an idle related threshold value, or an amount of change in the random access preset value.

[0270] Optionally, for the information for indicating to update the random access preset value, it may be used to indicate whether to enable the third node to determine the random access preset value, it may also be used to indicate that the random access preset value is to be determined by the third node, it may be used to indicate that the random access preset value is to be determined by the second node, and therefore it is required that the third node makes a relevant report to the second node that the random access preset value has been determined after certain condition is met. Exemplarily, if the information indicates that the random access preset value is to be determined by the second node, the third node may be triggered to perform the operational steps corresponding to S102, S103 to request the determination of the random access preset value from the second node when determining the random access preset value.

[0271] Optionally, for the threshold value for the number of conflicts, after the number of times of random access conflicts of the A-IoT device detected by the third node reaches certain threshold, the third node is triggered to carry out the determination of the random access preset value, or to report the relevant information to allow the second node to carry out the determination of the random access preset value.

[0272] Optionally, for the idle related threshold value, it may be a threshold value related to time or number of times, or may be a threshold value related to a ratio. When the idle related threshold value is the threshold value related to the time or number of times, one possible implementation is that: if the third node still detects that no random access has been initiated by any of the A-IoT devices in a certain period of time or after the transmitted repetitive signaling (also referred to as response signaling, hereinafter the "repetitive signaling" is used as an example) related to the random access reaches certain number of times, the determination of the random access preset value is triggered, or the reporting of the relevant information is triggered to allow the second node to carry out the determination of the random access preset value. Another possible implementation is that: if the detected number of times of the random access initiated by the A-IoT device is less than the idle related threshold value in a certain period of time or after the transmitted repetitive signaling related to the random access reaches certain number of times, the determination of the random access preset value, or the reporting of the relevant information is triggered by the third node to allow the second node to carry out the determination of the random access preset value. When the idle related threshold value is the threshold value related to the ratio, one possible implementation is that: if a ratio of the detected number of times of the random access initiated by the A-IoT device and the number of times that the third node transmitted the repetitive signaling is less than a threshold or a ratio of the number of times that the third node transmitted the repetitive signaling and the number of times of the random access initiated by the A-IoT device is greater than a threshold after the third node counts that the transmitted repetitive signaling related to the random access reaches certain number of times, then the determination of the random access preset value, or the reporting of the relevant information is triggered to allow the second node to carry out the determination of the random access preset value.

[0273] Optionally, after the determination of the random access preset value by the third node, the determined random access preset value may be transmitted to the fourth node to enable the fourth node to perform the random access based on the determined random access preset value, or to confirm the parameters required to perform the communication based on the determined random access preset value.

[0274] In the embodiment of the present disclosure, the determination of the random access preset value may be a process of updating, modifying, adjusting of the value related to the random access, and in the following, the operation exemplified as updating the random access preset value is not limited to updating an original value, but may also be understood as determining the value required for the random access.

[0275] In a feasible embodiment, in the scheme corresponding to S102, S103 and S104, the third node may request the second node to determine the random access preset value as follows.

[0276] At S102, seventh information is transmitted to the second node.

[0277] At S103, eighth information transmitted by the second node based on the random access preset value determined by the seventh information is received, the eighth information comprises information related to the random access preset value.

[0278] At S104, the determined information related to the random access preset value is transmitted to the fourth node.

[0279] Optionally, the seventh information comprises at least one of information related to a third value related to the random access, assistance information related to the determination of the random access preset value, or reporting information based on the first configuration information.

[0280] Optionally, the information related to the third value related to the random access may be a suggested or recommended updated random access preset value, such as information related to the recommended random access preset value, wherein recommendation, suggestion, etc. may be understood as a same or similar operation, the third node provides the second node with reference information for the preset value used for the fourth node to perform the random access via the seventh information.

[0281] Optionally, the assistance information related to updating the random access preset value comprises at least one of the following information:

[0282] information related to the number of conflicts for providing the number of times of random access conflicts detected by the third node in a period of time;

[0283] idle time related information for providing a length of time during which the third node has not detected any random access, or for providing the number of the repetitive signaling that the third node has not detected any random access after transmitting at least one repetitive signaling related to the random access; or

[0284] idle ratio related information for providing a ratio of the number of times of random accesses initiated by the A-IoT device detected by the third node in a period of time and the number of times that the third node transmitted the repetitive signaling, after the transmitted repetitive signaling related to the random accesses reaches certain number of times.

[0285] Optionally, the reporting information based on the first configuration information comprises at least one of the following information:

[0286] indicative information related to the number of conflicts having reached a threshold value;

[0287] indicative information related to the idle time having reached a threshold value;

[0288] indicative information related to number of idle times having reached a threshold value; or

[0289] indicative information related to the idle ratio having reached a threshold value.

[0290] Optionally, the seventh information may be comprised in an RRC measurement reporting message; or in an RRC user equipment assistance information message; or in other RRC messages; or in a MAC CE with a name such as random access preset update assistance information.

[0291] Optionally, the second node may update the random access preset value based on the seventh information provided by the third node, and feedback to the third node the information related to an update of the random access preset value via the eighth information, and may also transmit the updated random access preset value to the fourth node.

[0292] In one embodiment of the present disclosure, the method performed by the third node further comprises: transmitting first information to the second node, the first information comprising information related to the capability of the third node to support being an intermediate user equipment.

[0293] Optionally, the first information may be comprised in a radio resource control (RRC) user equipment capability information message or in other RRC messages. The second node confirms that the third node is supported as an intermediate user equipment according to the first information.

[0294] In one embodiment of the present disclosure, the method performed by the third node further comprises: receiving second information transmitted by the second node.

[0295] Optionally, the second information comprises at least one of the following:

[0296] resource pool related information, which comprises resources available for A-IoT related transmissions from the intermediate user equipment to the A-IoT device, and / or comprises resources available for A-IoT related transmissions from the A-IoT device to the intermediate user equipment, and / or comprises the available carrier wave (CW) related resources;

[0297] radio bearer related information for providing information related to a radio bearer that carries the A-IoT related transmissions;

[0298] a list of preamble related information for subsequent preamble related information to be used by the fourth node for communication with the third node; or

[0299] first configuration information related to determining a preset value for the random access, for the third node to subsequently update the preset value for the random access, or for the third node to subsequently provide relevant information to the second node so that the second node can update the preset value for the random access.

[0300] In one embodiment of the present disclosure, the method performed by the third node further comprises: receiving fourth information transmitted by the second node,

[0301] wherein the fourth information comprises at least one of the following:

[0302] a session identity for identifying a session or service of one A-IoT;

[0303] a paging reason / cause for indicating a reason for triggering a process related to the A-IoT;

[0304] group related information for describing a group of A-IoT devices, including information related to the group of A-IoT devices;

[0305] the random access preset value related information for subsequent random access of the A-IoT device;

[0306] a list of preamble related information for preamble related information to be used by the fourth node for subsequent communication with the third node;

[0307] first configuration related information related to determining the preset value for the random access, for the third node to subsequently update the preset value for the random access, or for the third node to subsequently provide the second node with the relevant information so that the second node can update the preset value for random access;

[0308] a first logical channel identity for identifying, between the second node and the third node, or between the third node and the fourth node, a transmission related to the A-IoT;

[0309] a first mapped session identity for identifying, between the second node and the third node, or between the third node and the fourth node, a session or service of the A-IoT; or

[0310] first resource related information comprising resources available for IoT-related transmissions from the intermediate user equipment to the IoT device, and / or comprising resources available for IoT-related transmissions from the IoT device to the intermediate user equipment, and / or comprising the available Carrier Wave (CW) related resources.

[0311] In one embodiment of the present disclosure, the method performed by the third node further comprises: receiving tenth information transmitted by the fourth node, the tenth information comprising a first random sequence; and transmitting eleventh information to the fourth node.

[0312] Optionally, the tenth information may further comprise a first preamble sequence. It is noted that the sequence comprised in the tenth information differs based on different implementations. In one implementation, if the fifth information comprises a list of preamble related information, the fourth node selects a preamble sequence based on the list of preamble related information, comprises the selected preamble sequence in the tenth information and transmits it to the third node while performing the random access. In another implementation, the fourth node pre-stores or is pre-configured with a set of preamble sequences, and when the random access is required, selects a preamble sequence, comprises the selected preamble sequence in the tenth information and transmits it to the third node. In a further implementation, the fourth node comprises a random sequence generator, and when the random access is required, the random access generator generates one of the first random sequences, comprises the generated first random sequence in the tenth information and transmits it to the third node.

[0313] Optionally, the eleventh information comprises at least one of the following:

[0314] a second value related to a fallback operation for use by the A-IoT device in determining the execution of the fallback related operation;

[0315] an identity corresponding to a first preamble sequence or the first preamble sequence, for use by the third node in response to having received the first preamble sequence;

[0316] a first random sequence for use by the third node in response to having received the first random sequence; or

[0317] third resource related information, the third resource comprising carrier related information needed to be received by the fourth node. Optionally, it comprises resources for use in subsequent communication between the fourth node and the third node, and / or comprises carrier related resources needed to be received by the fourth node (for uplink transmission of the fourth node).

[0318] The eleventh information may be comprised in a first interface message with a message name such as group response message, and the like; in a MAC random access response; in a MAC CE with a name such as receive success, and the like; or in a DCI.

[0319] The fourth node determines whether to match with the tenth information previously transmitted to the third node according to the received identity corresponding to the first preamble sequence or the first preamble sequence or the first random sequence, and if matched, then the fourth node determines the resources to be used in subsequent communication with the third node according to the third resource related information; otherwise if not matched, then the fourth node determines to perform the fallback related operation and determines a fallback value based on the second value.

[0320] It is noted that the fourth node uses the second value in a similar manner as it uses the first value. Only when or after the fallback value is reduced to zero, the fourth node is able to transmit the tenth information to the third node again.

[0321] In one embodiment of the present disclosure, the method performed by the third node further comprises: receiving a first local identity transmitted by the second node; and transmitting the first local identity to the fourth node.

[0322] Optionally, the first local identity is used to uniquely identify an A-IoT device within the second node or within the third node.

[0323] The first local identity may be comprised in an RRC message with a message name such as A-IoT device information message, and the like; or in a MAC CE with a name such as conflict / contention resolution, A-IoT device identity, and the like.

[0324] In the embodiment of the present disclosure, the third node uses the first local identity as a fourth node identity for subsequent communication with the fourth node. The fourth node uses the first local identity as a fourth node identity for subsequent communication with the third node.

[0325] Optionally, the first local identity is assigned to the A-IoT device by the second node upon receipt of the twelfth information.

[0326] Optionally, the twelfth information comprises at least one of the following:

[0327] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity; or

[0328] A-IoT device related information.

[0329] The twelfth information may be comprised in an RRC message with a message name such as A-IoT device information message, RRC establishment request message, user equipment assistance information message, uplink information transport message, side link user equipment information message, and the like; or in a MAC CE with a name such as A-IoT device information, and the like.

[0330] In the embodiment of the present disclosure, the second node identifies a corresponding A-IoT related session or service according to the session related information.

[0331] In the embodiment of the present disclosure, the method performed by the third node further comprises: receiving fourteenth information transmitted by the second node; and / or transmitting sixteenth information to the second node.

[0332] Optionally, the fourteenth information comprises at least one of the following:

[0333] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0334] a non-access stratum message related information element or a non-access stratum packet data unit comprising non-access stratum related operation requests or commands;

[0335] a first local identity which identifies the fourth node, for the third node to confirm a fourth node for which A-IoT communication is required; or

[0336] fourth resource related information comprising the resources available for the A-IoT-related transmission from the intermediate user equipment to the A-IoT device, and / or comprising the resources available for the A-IoT-related transmission from the A-IoT device to the intermediate user equipment, and / or comprising the available carrier wave (CW) related resources.

[0337] The fourteenth information may be comprised in an existing RRC downlink information transport message; or in an existing user equipment information request message; or in other RRC messages; or in a MAC CE with a message name such as operation command, operation request, and the like; or in a DCI.

[0338] In the embodiment of the present disclosure, the third node confirms an A-IoT related session or service according to the session related information. The third node identifies a fourth node for which A-IoT communication is required according to the first local identity. The third node confirms a resource to be used in subsequent communication with the fourth node according to the fourth resource related information.

[0339] Optionally, the sixteenth information comprises at least one of the following:

[0340] a session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0341] a non-access stratum message related information element or a non-access stratum packet data unit comprising non-access stratum related operation responses; or

[0342] a first local identity which identifies the fourth node for the second node to confirm the fourth node which makes a response.

[0343] The sixteenth information may be comprised in an RRC message with a message name such as uplink information transport message, user equipment information response message, A-IoT device information, and the like; or in a MAC CE with a message name such as operation response, and the like.

[0344] In the embodiment of the present disclosure, the second node may confirm an A-IoT related session or service according to the session related information. The second node may also confirm the fourth node which makes a response according to the first local identity.

[0345] By means of the method according to an embodiment of the present disclosure, it is ensured that the network side can obtain relevant information stored by the A-IoT device by means of using an intermediate user equipment, and furthermore, by means of establishing a context on the network side, relevant commands or operations can be performed on the A-IoT device by the intermediate user equipment. Thereby, normal communication between the network side and the A-IoT device is ensured.

[0346] A method performed by a fourth node in a wireless communication system according to an embodiment of the present disclosure is described below in connection with Fig. 4.

[0347] Optionally, in the method, S201-S202 are included.

[0348] At S201, a determined random access preset value is received from the third node.

[0349] At S202, random access is performed based on the determined random access preset value.

[0350] Optionally, the random access preset value comprises one of the following:

[0351] a random access preset value determined by the third node based on a first value related to random access received from a second node or first configuration information related to determining a value for random access; and

[0352] a random access preset value determined by the second node based on seventh information received from the third node, wherein information related to the random access preset value is transmitted by the second node to the third node via eighth information.

[0353] Optionally, the operation of determining the random access preset value by the third node may be referred to the embodiment of S101 above, and the operation of determining the random access preset value by the second node may be referred to the embodiment of S102-S103 above, and the present disclosure will not repeat the details thereof. The content related to the first configuration information, the seventh information and the eighth information may also be referred to the relevant embodiments of S101-S104 above, and the present disclosure will not repeat the details thereof.

[0354] In a feasible embodiment, the method performed by the fourth node further comprises S203-S205.

[0355] At S203, fifth information transmitted by the third node is received.

[0356] In an embodiment, the fifth information is used for the third node to perform an A-IoT related operation on the fourth node.

[0357] At S204, at least one piece of sixth information transmitted by the third node is received.

[0358] In one embodiment, the sixth information is used for the fourth node to determine a subsequent point in time to initiate the random access.

[0359] At S205, ninth information transmitted by the third node is received.

[0360] In one embodiment, the ninth information is used to update the random access preset value.

[0361] Optionally, the third node may transmit the fifth information to the at least one fourth node after confirming the need for IoT related communication with the fourth node and / or confirming session related information corresponding to IoT device related operations. The fifth information comprises at least one of the following:

[0362] session related information for providing information related to a session or service of the A-IoT;

[0363] random access preset value related information for subsequent random access of the A-IoT device;

[0364] second resource related information comprising resources for use in subsequent communication of the fourth node with the third node, and / or comprising carrier related resources to be received by the fourth node (for uplink transmission of the fourth node);

[0365] a list of preamble related information for use in subsequent communication of the fourth node with the third node; or

[0366] group related information for describing a group of A-IoT devices,

[0367] wherein the session related information comprises at least one of a session identity, a first logical channel identity, or a first mapped session identity.

[0368] In one implementation, for the second resource related information, if the second information comprises the resource pool related information, then the third node may select and determine the second resource related information according to the resource pool related information and comprise it in the fifth information , in which case the second resource related information is a subset of the resource pool related information. In another implementation, if the fourth information comprises the first resource related information, the third node may select and determine the second resource related information according to the first resource related information and comprise it in the fifth information, in which case the second resource related information is a subset of the first resource related information. In a further implementation, if the first resource related information is comprised in the fourth information, the third node directly uses the first resource related information received as the second resource related information comprised in the fifth information, in which case the second resource related information is the first resource related information.

[0369] The list of preamble related information may comprise one or more preamble related identities or indexes.

[0370] Optionally, the fifth information may be comprised in a first interface message between the intermediate user equipment and the A-IoT device with a message name such as group paging message, group inventory message, A-IoT operation message, and the like; or in a MAC CE with a name such as group inventory, A-IoT operation, and the like; or in a DCI.

[0371] Optionally, an example of an operation performed by the fourth node according to what may be included in the fifth information is as follows.

[0372] The fourth node confirms an A-IoT related session or service according to the session related information.

[0373] The fourth node confirms whether it belongs to the group of A-IoT devices being inventoried according to the group related information.

[0374] If the fifth information does not comprise the group related information, the fourth node may confirm it belonging to the A-IoT device being inventoried.

[0375] The fourth node confirms resources to be used in subsequent communication with the third node according to the second resource related information.

[0376] The fourth node confirms the preamble related information to be used in subsequent communication with the third node according to the list of preamble related information.

[0377] The fourth node generates a first random number for subsequent random access based on the random access preset value related information and saves the first random number.

[0378] Optionally, the third node may transmit at least one piece of sixth information to the fourth node after transmitting the fifth information. The sixth information comprises session related information for providing information related to a session or service of the A-IoT.

[0379] The session related information comprises at least one of a session identity, a first logical channel identity, or a first mapped session identity.

[0380] Optionally, the sixth information may be comprised in the first interface message with a message name such as group repetition message, group response message, and the like; or in a MAC CE with a name such as group repetition, group response, and the like; or in a DCI.

[0381] In the embodiment of the present disclosure, the fourth node identifies a corresponding A-IoT related session or service according to the session related information. If the fourth node confirms that the session related information comprised in the sixth information matches the session related information comprised in the fifth information, the fourth node subtracts the value of the first random number stored by one every time the sixth information is received, and if the value after subtracting one is not zero, the value after subtracting one is stored as a new first random number, otherwise if the value after subtracting one is zero, then the fourth node selects a preamble based on a list of the preamble related information comprised in the fifth information, and the fourth node transmits the selected preamble at a corresponding resource based on the second resource related information comprised in the fifth information.

[0382] Optionally, the third node may also transmit ninth information to the fourth node, the ninth information comprising at least one of session related information (for providing information related to a session or service of the A-IoT) and information related to an update of the random access preset value. The session related information comprises at least one of a session identity, a first logical channel identity, or a first mapped session identity.

[0383] Exemplarily, the third node may transmit a plurality of pieces of the ninth information to the fourth node for the same session related information, i.e., the random access preset value is adjusted many times.

[0384] Optionally, the ninth information may be comprised in the first interface message with a message name such as group update message, and the like; in a MAC CE with a name such as group update, and the like; or in a DCI.

[0385] In the embodiment of the present disclosure, the fourth node identifies a corresponding A-IoT related session or service according to the session related information. If the fourth node confirms that the session related information comprised in the ninth information matches the session related information comprised in the fifth information, the fourth node updates the random access preset value based on the information related to the update of the random access preset value, and generates a new first random number for subsequent random accesses based on the updated random access preset value, and saves the first random number.

[0386] It is to be noted that there is no strict order of precedence in S204 and S205, and the third node may transmit the sixth information and the ninth information to the fourth node at the same time, or the sixth information may be transmitted first or the ninth information may be transmitted first.

[0387] In one embodiment of the present disclosure, the method performed by the fourth node further comprises: transmitting tenth information to the third node according to the second resource related information comprised in the fifth information; and receiving eleventh information transmitted by the third node.

[0388] Optionally, the tenth information comprises at least one of a first preamble sequence and a first random sequence, and the eleventh information comprises at least one of a second value related to a fallback operation, an identity corresponding to the first preamble sequence or the first preamble sequence, the first random sequence, or the third resource related information.

[0389] Optionally, the description of the specific contents of the tenth information and the eleventh information can be referred to the contents of the above embodiments, and the present disclosure will not repeat the details thereof.

[0390] In one embodiment of the present disclosure, the method performed by the fourth node further comprises: receiving a first local identity transmitted by the third node, wherein the first local identity is transmitted to the third node after being assigned to the A-IoT device by the second node for uniquely identifying the A-IoT device within the second node or within the third node.

[0391] In one embodiment of the present disclosure, the method performed by the fourth node further comprises: receiving fifteenth information transmitted by the third node.

[0392] Optionally, the fifteenth information comprises at least one of the following:

[0393] session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;

[0394] a non-access stratum message related information element or a non-access stratum packet data unit comprising non-access stratum related operation requests or commands;

[0395] a first local identity which identifies the fourth node, for the third node to confirm the fourth node for which A-IoT communication is required; or

[0396] fifth resource related information comprising resources for use in subsequent communication of the fourth node with the third node, and / or comprising carrier related resources needed to be received by the fourth node (for uplink transmission of the fourth node).

[0397] It is noted that, for the fifth resource related information transmitted by the third node, one implementation is that the third node confirms the fifth resource related information according to the fourth resource related information comprised in the received fourteenth information, and another implementation is that the third node selects the fifth resource related information for subsequent communication with the fourth node based on the resource pool related information comprised in the received second information.

[0398] The fifteenth information may be comprised in the first interface message with a message name such as a downlink information transport message, a user equipment information request message, a notification message, an A-IoT operation message, and the like; or in a MAC CE with a message name such as an operation command, an operation request, and the like; or in a physical layer control message.

[0399] In the embodiment of the present disclosure, the fourth node confirms an A-IoT related session or service according to the session related information. The fourth node confirms itself as a fourth node required to receive the fifteenth information according to the first local identity. The fourth node confirms a resource to be used in subsequent communication with the third node according to the fifth resource related information.

[0400] A method performed by a second node in a wireless communication system according to an embodiment of the present disclosure is described below in connection with Fig. 5.

[0401] Optionally, in the method, S301-S302 are included.

[0402] At S301, seventh information transmitted by the third node is received and a random access preset value is determined according to the seventh information.

[0403] At S302, eighth information is transmitted to the third node, the eighth information comprises information related to the random access preset value.

[0404] Optionally, the content related to the seventh information and the eighth information can be referred to the content of the above embodiments, and the present disclosure will not repeat the details thereof.

[0405] In the embodiment of the present disclosure, the second node may receive the seventh information from the third node, and then determine the random access preset value according to the content of the seventh information, and provide the third node with information related to the determined random access preset value via the eighth information.

[0406] In a feasible embodiment, the method performed by the second node further comprises S303-S304.

[0407] At S303, first information transmitted by the third node is received, the first information comprises information relating to the capability of the third node to support being an intermediate user equipment.

[0408] At S304, second information is transmitted to the third node according to the first information.

[0409] Optionally, the third node may transmit the first information to the second node, the first information is used to provide information related to the capability of the user equipment supported by the third node. The first information may be comprised in a radio resource control (RRC) user equipment capability information message or in other RRC messages. The second node may confirm that the third node supports being an intermediate user equipment according to the first information.

[0410] Optionally, the second node, upon receipt of the first information, transmits the second information to the third node, according to the content of the first information, the second information is used to provide relevant resources for data or signaling transmission between the intermediate user equipment and the A-IoT device.

[0411] The second information, at least, comprises at least one of the following:

[0412] resource pool related information comprising resources available for A-IoT related transmissions from the intermediate user equipment to the A-IoT device, and / or comprising resources available for A-IoT related transmissions from the A-IoT device to the intermediate user equipment, and / or comprising the available carrier wave (CW) related resources;

[0413] radio bearer related information for providing information related to a radio bearer that carries the A-IoT related transmissions;

[0414] a list of preamble related information for subsequent preamble related information to be used by the fourth node for communication with the third node; or

[0415] first configuration information related to determining a preset value for random access, for the third node to subsequently update the preset value for random access, or for the third node to subsequently provide relevant information to the second node so that the second node can be enabled to update the preset value for random access.

[0416] In the embodiment of the present disclosure, the carrier CW is transmitted by the intermediate user equipment or other external device to the A-IoT device, and the A-IoT device determines, based on the received carrier CW, the frequency domain resources used by the A-IoT device for transmission to the intermediate user equipment. One possible implementation is that the A-IoT device modulates the information to be transmitted onto the CW and then transmits the modulated signal to the intermediate user equipment. Another possible implementation is that the A-IoT device frequency converts the CW and generates a frequency converted signal, then modulates the information to be transmitted onto the frequency converted signal, and then transmits the modulated signal to the intermediate user equipment.

[0417] The resource pool related information comprises at least one resource related information, and for each resource related information, comprises at least one of the following:

[0418] resource identity related information for identifying the resource;

[0419] frequency domain related information, comprising a frequency domain related resource corresponding to the corresponding resource identity;

[0420] time domain related information, comprising a time domain related resource corresponding to the corresponding resource identity; or

[0421] sequence related information, comprising sequence related resources corresponding to the corresponding resource identity.

[0422] The frequency domain related information comprises at least one of bandwidth information, frequency domain starting point information, or frequency point information.

[0423] For the radio bearer related information, one possible implementation is to define a signaling radio bearer or a data radio bearer dedicated for carrying A-IoT related transmission, for carrying A-IoT related transmission between the base station and the intermediate user equipment.

[0424] The first configuration information comprises at least one of the following:

[0425] indicative information related to an update of the random access preset value, which may be used to indicate whether to enable the third node to update the random access preset value, or may be used to indicate that the random access preset value is to be updated by the third node, or may be used to indicate that the random access preset value is to be updated by the second node, and thus it is required that the third node, after certain condition is met, performs the relevant reporting of the random access preset value to the second node;

[0426] a threshold value for number of conflicts, which triggers an update of the random access preset value or triggers the reporting of relevant information to allow the second node to update the random access preset value, when the number of times of random access conflicts of the A-IoT device detected by the third node reaches certain threshold; or

[0427] idle related threshold value, which may be a threshold value related to time or number of times, or may be a threshold value related to a ratio. When the idle related threshold value is a threshold value related to the time or number of times, one possible implementation is that: if the third node still detects that no random access has been initiated by any of the A-IoT devices in a certain period of time or after the transmitted repetitive signaling (also referred to as response signaling, hereinafter the "repetitive signaling" is used as an example) related to the random access reaches certain number of times, the update of the random access preset value or the reporting of the relevant information is triggered to allow the second node to update the random access preset value. Another possible implementation is that: if the detected number of times of the random access initiated by the A-IoT device is less than the idle related threshold value in a certain period of time or after the transmitted repetitive signaling related to the random access reaches certain number of times, the update of the random access preset value or the reporting of the relevant information is triggered by the third node to allow the second node to update the random access preset value. When the idle related threshold value is the threshold value related to the ratio, one possible implementation is that: if a ratio of the detected number of times of the random access initiated by the A-IoT device and the number of times that the third node transmitted the repetitive signaling is less than a threshold or a ratio of the number of times that the third node transmitted the repetitive signaling and the number of times of the random access initiated by the A-IoT device is greater than a threshold after the third node counts that the transmitted repetitive signaling related to the random access reaches certain number of times, then the update of the random access preset value or the reporting of the relevant information is triggered to allow the second node to update the random access preset value.

[0428] Optionally, the second information may be comprised in an existing RRC reconfiguration message or in other RRC messages.

[0429] Based on the second information illustrated in the above embodiments, the third node may exemplarily perform the following operations.

[0430] The third node confirms resources that can be used for A-IoT related transmissions between the intermediate user equipment and the A-IoT device according to the resource pool related information.

[0431] The third node confirms, according to the radio bearer related information, that it can act as an intermediate user equipment for subsequent A-IoT related transmissions with the A-IoT device.

[0432] The third node carries out a possible subsequent random access preset value update related operation according to the configuration related to updating the preset value for random access.

[0433] The third node confirms preamble related information that may be used by the fourth node in subsequent communication with the third node according to the list of preamble related information.

[0434] In one embodiment of the present disclosure, the method performed by the second node further comprises: transmitting fourth information to the third node.

[0435] Optionally, the content related to the fourth information can be referred to the description of the above embodiments, and the present disclosure does not repeat the details thereof.

[0436] In one embodiment of the present disclosure, the method performed by the second node further comprises: assigning a first local identity to the A-IoT device, wherein the first local identity is used to uniquely identify an A-IoT device within the second node or within the third node; and transmitting the first local identity to the third node.

[0437] Optionally, the first local identity may be comprised in an RRC message with a message name such as A-IoT device information message, and the like; or in a MAC CE with a name such as conflict resolution, A-IoT device identity, and the like.

[0438] In one embodiment of the present disclosure, the method performed by the second node further comprises: receiving third information transmitted by the first node.

[0439] Optionally, the first node may trigger an A-IoT related process, which may be used to initiate paging to the A-IoT device, and / or may be used to inventory or search for or find (hereinafter described unitedly using "inventory" as an example) the A-IoT device, and / or may be used to request or instruct the A-IoT device to perform a sensed data reporting. Subsequently, the first node may transmit the third information to the second node.

[0440] Optionally, the third information comprises at least one of the following:

[0441] a session identity or a service identity (hereinafter unitedly described by way of example as "session identity") for identifying a session or a service of one A-IoT;

[0442] a request or indication or paging reason / cause (hereinafter unitedly described by way of example as "paging reason / cause") indicating a reason for triggering a process related to the A-IoT, e.g. indicating the reason for triggering the process may be an inventory, or indicating the reason for triggering the process may be, for another example, sensed data or a measurement report;

[0443] a service area or paging area (hereinafter described unitedly using "service area" as an example), which is used to describe the area related information involved in or corresponding to the A-IoT related process;

[0444] group or class related information (hereinafter unitedly described as "group related information" as an example), which describes a group of A-IoT devices; or

[0445] inventory-only related information, which provides information on whether the purpose of the third information transmitted is inventory-only.

[0446] Optionally, the third information may be comprised in an NG interface application protocol NGAP message with a message name such as group paging message, or in other NGAP messages.

[0447] In the embodiment of the present disclosure, the second node may confirm an A-IoT related session or service initiated by the first node according to the session identity. The second node may also confirm a reason for triggering an A-IoT related process according to the paging reason / cause. The second node may also confirm an area involved in the corresponding A-IoT related service, and / or an area where the second node needs to page an A-IoT device, according to the service area. The second node may also confirm a group of A-IoT devices that need to be serviced and / or paged according to the group related information. The second node may also confirm, according to the inventory-only related information, that there is no need to allocate subsequent resources for the A-IoT device (the subsequent resources comprise, e.g., subsequent time-frequency code-domain resources allocated for subsequent communication between the intermediate user equipment and the A-IoT device, or local identities for subsequently identifying the A-IoT device, etc.) after the A-IoT device has reported a device identity.

[0448] In one embodiment of the present disclosure, the method performed by the second node further comprises: receiving thirteenth information transmitted by the first node; and transmitting fourteenth information to the third node according to the thirteenth information.

[0449] Optionally, after the first node completes the context establishment process with the second node, the first node may transmit the thirteenth information to the second node. The thirteenth information may be used to perform non-access stratum related operations (e.g. access operations, read / write operations, locking operations, storage operations, etc.) on the fourth node.

[0450] Optionally, the thirteenth information at least comprises one of the following information:

[0451] fourth node related identity information for identifying the fourth node targeted by the non-access stratum related operation;

[0452] a session identity for identifying a session or service of one A-IoT;

[0453] a non-access stratum message related information element or a non-access stratum packet data unit, which comprises, for example, non-access stratum related operation requests or commands; and

[0454] fourth node response related information for providing information related to whether a non-access stratum related operation requires a response from the fourth node.

[0455] Optionally, the thirteenth information may be comprised in an NGAP DOWNLINK NAS TRANSPORT message (non-access stratum message downlink transport message under the NGAP protocol, for, example, one message in the NGAP protocols) or in other NGAP messages.

[0456] In the embodiment of the present disclosure, the second node may confirm the fourth node targeted by the relevant operation of the non-access stratum according to the fourth node related identity information. The second node may also confirm a corresponding A-IoT related session or service according to the session identity. Optionally, the second node may confirm whether resources required for a subsequent fourth node response need to be provided to the third node according to the fourth node response related information.

[0457] Optionally, the content related to the fourteenth information can be referred to the description of the above embodiments, which is not repeated in the present disclosure.

[0458] Another method performed by a third node in a wireless communication system according to an embodiment of the present disclosure is described below in connection with Fig. 6.

[0459] Optionally, in the method, S401-S402 are included.

[0460] At S401, eighteenth information transmitted by a second node is received.

[0461] At S402, nineteenth information is transmitted to the fourth node according to the eighteenth information.

[0462] Optionally, the second node may transmit the eighteenth information for communicating with the A-IoT device to the third node. The eighteenth information may comprise at least one of the following:

[0463] session related information for providing information related to a session or service of the A-IoT;

[0464] inventory time window related information for providing time window information related to inventories;

[0465] a second duration for providing, to the fourth node, related information of a duration during which the fourth node no longer responds to some or all of the inventories after being successfully inventoried; or

[0466] group related information for describing a group of A-IoT devices, including information related to the group of A-IoT devices.

[0467] The session related information comprises at least one of a session identity, a first logical channel identity, or a first mapped session identity.

[0468] The time window information related to the inventories comprises at least one of a time window starting time / moment, a time window duration, or a time window ending time / moment.

[0469] In the embodiment of the present disclosure, in one implementation, a first node determines the readers participating in the inventories and the first node determines the time window related information corresponding to each of the readers participating in the inventories, in which case the time window related information comprised in the eighteenth information corresponds to the time window related information comprised in the seventeenth information. In another implementation, the first node determines the readers participating in the inventories and the first node determines a total time window related information corresponding to all readers participating in the inventories under a base station, in which case a second node determines the time window related information corresponding to each of the readers participating in the inventories and comprises it in the eighteenth information. In a further implementation, the second node determines the readers participating in the inventories according to the service area comprised in the seventeenth information received, in which case if the seventeenth information also comprises the total time window related information, the second node determines, according to the total time window related information, the time window related information corresponding to each of the readers participating in the inventories and comprises it in the eighteenth information, in a specific manner for example the second node divides the total time window into at least one sub-time window, each of which corresponds to one of the readers participating in the inventories.

[0470] It is also noted that in one implementation, the second node directly transmits the first duration received as the second duration to the third node. In another implementation, the second node generates the second duration and transmits it to the third node based on the first duration received and / or at least one time window related information comprised in the seventeenth information and / or the at least one sub-time window divided by the second node, in a specific manner for example using the first duration minus the time window related information corresponding to all readers that have previously participated in the inventories as the second duration.

[0471] It is also noted that in one implementation, it is the second node that determines the order of the readers participating in the inventories.

[0472] Optionally, the eighteenth information may be comprised in a radio resource control RRC message with a message name such as group paging message, inventory message, and the like; or in other RRC messages; or in a control element MAC CE of the media access control with a message name such as inventory request, and the like; or in a downlink control indicator (DCI).

[0473] On the basis of the above embodiments, the third node confirms an A-IoT related session or service according to the session related information. The third node may also confirm a group of A-IoT devices to be inventoried according to the group related information.

[0474] Optionally, the third node, upon receipt of the eighteenth information, may transmit, to the fourth node, nineteenth information for communicating with the A-IoT device according to the content of the eighteenth information.

[0475] The nineteenth information comprises at least one of the following information:

[0476] session related information for providing information related to a session or service of the A-IoT;

[0477] a third duration for providing, to the fourth node, related information of a duration during which the fourth node no longer responds to some or all of the inventories after being successfully inventoried;

[0478] group related information for describing a group of A-IoT devices, including information related to the group of A-IoT devices; or

[0479] reader identity for identifying a reader.

[0480] The session related information comprises at least one of a session identity, a first logical channel identity, or a first mapped session identity.

[0481] It is noted that in one implementation, the third node directly transmits the second duration received as the third duration to the fourth node. In another implementation, the third node generates the third duration and transmits it to the fourth node based on the second duration received and / or time elapsed from the reception of the eighteenth information to the transmission of the nineteenth information, in a specific manner for example using the second duration minus the time elapsed from the reception of the eighteenth information to the transmitting of the nineteenth information as the third duration.

[0482] Optionally, the nineteenth information may be comprised in the first interface message with a message name such as inventory message, inventory request message, inventory duplicate message, inventory response message, inventory adjustment message, and the like; or in the control element MAC CE of the media access control with a message name such as inventory request, inventory repetition, inventory response, inventory adjustment, and the like; or in a physical layer control message.

[0483] On the basis of the above embodiments, the fourth node confirms an A-IoT related session or service according to the session related information. The fourth node may also confirm itself as an A-IoT device that needs to be inventoried according to the group related information.

[0484]

[0485] Another method performed by a fourth node in a wireless communication system according to an embodiment of the present disclosure is described below in connection with Fig. 7.

[0486] Optionally, in the method, S501-S502 are included.

[0487] At S501, nineteenth information transmitted by the second node and / or the third node is received, the nineteenth information is a third duration related to not to respond to some or all of the inventories again.

[0488] At S502, a timer is started or restarted based on the third duration in the nineteenth information.

[0489] Optionally, the nineteenth information received by the fourth node may be transmitted by the second node or may be transmitted by the third node. A description of the nineteenth information can be found in the above embodiments, and the present disclosure will not repeat the details thereof.

[0490] In the embodiment of the present disclosure, when transmitting the nineteenth information to the fourth node via the second node, there is no strict execution sequence between S401 and S501 in the above embodiments. The second node may first transmit the eighteenth information to the third node, or may first transmit the nineteenth information to the fourth node. The embodiment of the present disclosure is not limited thereto.

[0491] In a feasible embodiment, the method further comprises that the fourth node starts or restarts a timer based on the third duration in the nineteenth information is started or restarted after transmitting the A-IoT device related information to the third node and / or completing the operation related to the A-IoT device.

[0492] In a feasible embodiment, the method further comprises that when the timer has not expired, the fourth node no longer initiates a new random access procedure for at least one of the following:

[0493] a received inventory related message;

[0494] a received inventory related message comprising the same session related information;

[0495] a received inventory related message comprising the same group related information; or

[0496] a received inventory related message comprising the same reader identity.

[0497] In the embodiment of the present disclosure, after the fourth node has completed the inventory (i.e., after transmitting the A-IoT device related information as in step 10 of Fig. 9), and / or after completing the A-IoT related operation, a timer may be started or restarted based on the third duration, and when the timer has not expired: in one implementation, the fourth node will no longer respond to the received inventory related message (i.e. initiate a new random access procedure); in another implementation, the fourth node will no longer initiate a new random access procedure for the received inventory related message comprising the same the session related information; in another implementation, the fourth node will no longer initiate a new random access procedure for the received inventory related message comprising the same group related information; in a further implementation, the fourth node will not initiate a new random access procedure for the received inventory related message comprising the same reader identity.

[0498]

[0499] Another method performed by a second node in a wireless communication system according to an embodiment of the present disclosure is described below in connection with Fig. 8.

[0500] Optionally, in the method, S601 and / or S602 are included.

[0501] At S601, seventeenth information transmitted by the first node is received and eighteenth information is transmitted to the third node according to the seventeenth information.

[0502] At S602, nineteenth information is transmitted to the fourth node.

[0503] Optionally, the first node may trigger a process related to the A-IoT, which may be used to inventory the A-IoT device, so that the first node may transmit the seventeenth information to the second node.

[0504] The seventeenth information comprises at least one of the following information:

[0505] a session identity for identifying a session or service of one A-IoT;

[0506] a service area for describing area related information corresponding to the A-IoT related process;

[0507] at least one reader related identity for providing information related to a reader participating in the inventories;

[0508] at least one time window related information for providing time window information related to the inventories;

[0509] a first duration for providing, to the fourth node, related information of a duration during which the fourth node no longer responds to some or all of the inventories after being successfully inventoried; or

[0510] group related information for describing a group of A-IoT devices.

[0511] The reader related identity comprised in the at least one reader related identity comprises at least one of the following information:

[0512] a NG interface application layer protocol user equipment identity;

[0513] a transmission-reception point identity; or

[0514] a cell related identity, such as a cell global identity.

[0515] The time window related information comprised in the at least one time window related information comprises at least one of the following:

[0516] a time window starting time / moment;

[0517] a time window duration; or

[0518] a time window ending time / moment.

[0519] It is to be noted that the exact type of identity comprised in the reader related identity depends on different situations. If the reader is an intermediate user equipment or in the intermediate user equipment, the reader related identity corresponds to the NG Interface application layer protocol user equipment identity, and if the reader is in a base station, the reader related identity corresponds to the transmission-reception point identity or the cell related identity.

[0520] It is also noted that in one implementation, the first node determines the readers participating in the inventories, in which case the seventeenth information may comprise the at least one reader-related identity. In one implementation, the first node determines the readers participating in the inventories, and the first node determines the time window related information corresponding to each of the readers participating in the inventories, in which case the seventeenth information may comprise the at least one reader-related identity, and the at least one time window related information corresponds one-to-one with the reader-related identity. In another implementation, the first node determines the readers participating in the inventories, and the first node determines a total time window related information corresponding to all the readers participating in the inventories under a base station, in which case the seventeenth information may comprise the at least one reader related identity and comprise one piece of time window related information. In another implementation, the first node determines an area participating in the inventories, in which case the seventeenth information may comprise a service area. In a further implementation, the first node determines an area participating in the inventories, in which case the seventeenth information may comprise a service area, and the second node determines the readers participating in the inventories based on the service area.

[0521] It is also noted that in one implementation, the at least one reader related identity may also be a sequential list of reader related identities for the second node to confirm the order in which the corresponding readers participate in the inventories.

[0522] Optionally, the seventeenth information may be comprised in the NG interface application protocol NGAP message with a message name such as group paging message. It may also be comprised in other NGAP messages.

[0523] Based on the above embodiments, the second node in the embodiment of the present disclosure may confirm the A-IoT related session or service initiated by the first node according to the session identity. The second node may also confirm a group of A-IoT devices to be inventoried according to the group related information.

[0524] Optionally, upon receipt of the seventeenth information, the second node may also transmit the eighteenth information for communicating with the A-IoT devices to the third node according to the content of the seventeenth information. The content of the eighteenth information can be described with reference to the above embodiments, and the present disclosure will not repeat the details thereof.

[0525] Optionally, the specific content included in the nineteenth information transmitted from the second node to the fourth node can be referred to the content of the nineteenth information transmitted from the third node to the fourth node of S402 in the above embodiments, as well as the relevant content involved in S501-S502, and the present disclosure will not repeat the details thereof.

[0526]

[0527] A specific operation flow of an A-IoT signaling or data transmission scheme according to an embodiment of the present disclosure is described below.

[0528] Fig. 9 illustrates an example method of A-IoT signaling or data transmission according to the present disclosure. As shown in Fig. 9,

[0529] at step 1, a third node transmits first information to a second node, the first information is used to provide information related to the capability of a user equipment supported by the third node. The first information, at least, comprises information relating to the capability of the third node to support being an intermediate user equipment.

[0530] The first information may be comprised in a radio resource control (RRC) user equipment capability information message or in other RRC messages.

[0531] The second node confirms that the third node is supported as an intermediate user equipment according to the first information.

[0532] At step 2, the second node, upon receipt of the first information, transmits second information to the third node, according to the content of the first information, the second information is used to provide relevant resources for use in data or signaling transmission between the intermediate user equipment and the A-IoT device. The second information comprises at least at least one of the following information:

[0533] resource pool related information, comprising resources available for A-IoT related transmissions from the intermediate user equipment to the A-IoT device, and / or comprising resources available for A-IoT related transmissions from the A-IoT device to the intermediate user equipment, and / or comprising the available carrier wave (CW) related resources;

[0534] radio bearer related information for providing information related to a radio bearer that carries the A-IoT related transmissions;

[0535] a list of preamble related information for preamble related information to be used in the subsequent communication of the fourth node with the third node; or

[0536] first configuration information related to updating a preset value for random access, for the third node to subsequently update the preset value for random access, or for the third node to subsequently provide relevant information to the second node in order to allow the second node to update the preset value for random access.

[0537] It is to be noted that the carrier CW is transmitted by the intermediate user equipment or other external device to the A-IoT device, and the A-IoT device determines, based on the received carrier CW, the frequency domain resources used by the A-IoT device for transmission to the intermediate user equipment. One possible implementation is that the A-IoT device modulates the information to be transmitted onto the CW and then transmits the modulated signal to the intermediate user equipment. Another possible implementation is that the A-IoT device frequency converts the CW and generates a frequency converted signal, then modulates the information to be transmitted onto the frequency converted signal, and then transmits the modulated signal to the intermediate user equipment.

[0538] It is to be noted that the random access preset value is used for subsequent random access of the A-IoT device. In one implementation, the random access preset value related information is transmitted to the A-IoT device, and the A-IoT device generates a first random value based on the random access preset value related information for the subsequent random access. The random access preset value is only an example name, and other example names may include R-value, Q-value, P-value, and the like. This patent will be described using the "random access preset value" as an example.

[0539] The resource pool related information comprises at least one resource related information, and for each resource related information, comprises at least one of the following information:

[0540] resource identity related information for identifying the resource;

[0541] frequency-domain related information, comprising a frequency-domain related resource corresponding to the corresponding resource identity;

[0542] time-domain related information, comprising the time-domain related resource corresponding to the corresponding resource identity; or

[0543] sequence related information, comprising sequence-related resources corresponding to the corresponding resource identity.

[0544] The frequency domain related information comprises at least one of the following information: bandwidth information, frequency domain starting point information, or frequency point information.

[0545] For the radio bearer related information, one possible implementation is to define a signaling radio bearer or a data radio bearer dedicated to carrying A-IoT related transmissions, for carrying A-IoT related transmissions between the base station and the intermediate user equipment.

[0546] The first configuration information comprises at least one of the following information:

[0547] indicative information related to an update of the random access preset value, which may be used to indicate whether to enable the third node to update the random access preset value; or may be used to indicate that the random access preset value is to be updated by the third node; or may be used to indicate that the random access preset value is to be updated by the second node, and thus it is required that the third node, after certain condition is met, performs the relevant reporting of the random access preset value;

[0548] a threshold value for number of conflicts, which triggers an update of the random access preset value or triggers the reporting of relevant information to allow the second node to update the random access preset value when the number of times of random access conflicts detected by the third node for the A-IoT device reaches certain threshold;

[0549] idle related threshold value, which may be a threshold value related to time or number of times, or may be a threshold value related to a ratio. When the idle related threshold value is a threshold value related to the time or number of times, one possible implementation is that: if the third node still detects that no random access has been initiated by any of the A-IoT devices in a certain period of time or after the transmitted repetitive signaling (also referred to as response signaling, hereinafter the "repetitive signaling" is used as an example) related to the random access reaches certain number of times, the update of the random access preset value or the reporting of the relevant information is triggered by the third node to allow the second node to update the random access preset value. Another possible implementation is that: if the detected number of times of the random access initiated by the A-IoT device is less than the idle related threshold value in a certain period of time or after the transmitted repetitive signaling related to random access reaches certain number of times, the update of the random access preset value or the reporting of relevant information is triggered to allow the second node to update the random access preset value. When the idle related threshold value is a threshold value related to the ratio, one possible implementation is that: if a ratio of the detected number of times of the random access initiated by the A-IoT device and the number of times that the third node transmitted the repetitive signaling is less than a threshold or a ratio of the number of times that the third node transmitted the repetitive signaling and the number of times of the random access initiated by the A-IoT device is greater than a threshold after the third node counts that the transmitted repetitive signaling related to the random access reaches certain number of times, then the update of the random access preset value or the reporting of relevant information is triggered to allow the second node to update the random access preset value; or

[0550] information related to an amount of change in the random access preset value.

[0551] The second information may be comprised in an existing RRC reconfiguration message or in other RRC messages.

[0552] The third node confirms resources that can be used for A-IoT related transmissions between the intermediate user equipment and the A-IoT device according to the resource pool related information.

[0553] According to the radio bearer related information, the third node confirms that it can be used as an intermediate user equipment for subsequent A-IoT related transmissions between the intermediate user equipment and the A-IoT device

[0554] The third node performs a possible subsequent operation related to updating the preset value for the random access according to the configuration related to updating the preset value for the random access.

[0555] At step 3, the first node triggers an A-IoT related process, which may be used to initiate paging to the IoT device, and / or may be used to inventory or search for or find (hereinafter described unitedly using "inventory" as an example) the A-IoT device, and / or may be used to request or instruct the A-IoT device to perform a reporting of sensed data. The first node transmits the third information to the second node.

[0556] The third information comprises at least one of the following information:

[0557] a session identity or a service identity (hereinafter described unitedly using "session identity" as an example), which identifies a session or a service of one A-IoT;

[0558] a request or indication or paging reason / cause (hereinafter unitedly described using "paging reason / cause" as an example) for indicating the reason for triggering the IoT related process, e.g. the reason for triggering a process may be an inventory, or the reason for triggering a process may be the sensed data or measurement report, for example;

[0559] a service area or paging area (hereinafter unitedly described using "service area" as an example), which describes the information related to an area involved in or corresponding to the A-IoT related process;

[0560] group or class related information (hereinafter unitedly described using the "group related information" as an example), which describes a group of A-IoT devices; or

[0561] inventory-only related information, which provides information on whether the purpose of the third information transmitted is inventory-only.

[0562] The third information may be comprised in an NG Interface application protocol NGAP message with a message name such as group paging message. It may also be comprised in other NGAP messages.

[0563] The second node confirms an A-IoT related session or service initiated by the first node according to the session identity.

[0564] The second node confirms a reason for triggering the A-IoT related process according to the paging reason / cause.

[0565] The second node confirms the area involved in the corresponding A-IoT related service, and / or an area where the second node needs to page the A-IoT device, according to the service area.

[0566] The second node confirms a group of A-IoT devices that need to be serviced and / or paged according to the group related information.

[0567] The second node confirms, according to the inventory-only related information, that there is no need to allocate subsequent resources to the A-IoT device after the A-IoT device has reported a device identity (the subsequent resources include, for example, subsequent time-frequency code domain resources allocated for the communication between the intermediate user equipment and the A-IoT device, or subsequent local identities for identifying the A-IoT device, etc.).

[0568] At step 4, the second node, upon receipt of the third information, determines whether to communicate with the A-IoT device by the second node itself or to communicate with the A-IoT device through the third node. If the second node determines to communicate with the A-IoT device through the third node, fourth information for communicating with the A-IoT device is transmitted to the third node.

[0569] The fourth information comprises at least one of the following information:

[0570] a session identity for identifying a session or service of one A-IoT;

[0571] a paging reason / cause for indicating a reason for triggering the A-IoT related process;

[0572] group related information for describing a group of A-IoT devices;

[0573] random access preset value related information for subsequent random access of the A-IoT device;

[0574] a list of preamble related information for subsequent preamble related information used by the fourth node to communicate with the third node;

[0575] first configuration information related to an update of the preset value for random access for subsequent update of the preset value for the random access by the third node, or for subsequent provision of relevant information by the third node to the second node so that the second node can update the preset value for random access;

[0576] a first logical channel identity for identifying, between the second node and the third node, or between the third node and the fourth node, a transmission related to the A-IoT; or

[0577] a first mapped session identity for identifying, between the second node and the third node, or between the third node and the fourth node, a session or service of one A-IoT.

[0578] The first resource related information comprises resources available for IoT related transmissions from the intermediate user equipment to the A-IoT device, and / or comprises resources available for A-IoT-related transmissions from the A-IoT device to the intermediate user equipment, and / or comprising the available carrier wave (CW) related resources.

[0579] The first configuration information related to an update of the preset value for the random access is the same as the information comprised in the first configuration information comprised in the second information.

[0580] For the random access preset value related information, one implementation is that the second node determines the random access preset value and transmits it to the fourth node via the third node, another implementation is that the second node transmits a suggested or recommended random access preset value in the fourth information, and the third node determines the random access preset value based on the suggested or recommended random access preset value and transmits it to the fourth node.

[0581] For the value corresponding to the first logical channel identity, in one implementation, the value corresponding to the first logical channel identity is a unique value preset in the system, the third node can confirm that the fourth information is used to communicate with the A-IoT device upon receipt of the first logical channel identity. In another implementation, it is a value in a preset set of values in the system, wherein the number of the values in the set of values is related to the number of sessions (e.g., if one node supports a maximum inventory of four sessions, the set of values comprises four preset values, each preset value uniquely corresponds to one session), and the third node, upon receipt of the first logical channel identity, can confirm that the fourth information is used to communicate with the A-IoT device and for which session, in which case the fourth information may not comprise the session identity and / or the first mapped session identity.

[0582] The first mapped session identity, in one implementation, the second node, upon receipt of the session identity comprised in the third information, maps the session identity to the first mapped session identity, so that between the second node and the third node, or between the third node and the fourth node, the first mapped session identity may be used to identify a session or service of one A-IoT. In this case, the session identity is not comprised in the fourth information.

[0583] The first resource related information comprises at least one of the following information:

[0584] at least one resource identity related information for identifying at least one resource; and

[0585] at least one resource related information for providing frequency domain resources and / or time domain resources and / or sequence resources for A-IoT related transmissions between the third node and the fourth node.

[0586] The resource related information is the same as the content comprised in the resource related information comprised in the second information.

[0587] It is noted that, in one implementation, if the at least one resource related information is already comprised in the second information, and the resource related information has already comprised the resource identity related information and the frequency domain related information and / or the time domain related information and / or the sequence related information, then only at least one resource identity needs to be comprised in the first resource related information comprised in the fourth information, and the third node can confirm the resources and / or carrier related resources to be used in the A-IoT related transmission of the intermediate user equipment with the A-IoT device according to the at least one resource identity related information. In another implementation, the third node confirms the resource and / or carrier-related resource to be used in the A-IoT-related transmission of the intermediate user equipment with the A-IoT device according to at least one of the resource related information comprised in the first resource related information comprised in the fourth information.

[0588] The fourth information may be comprised in a radio resource control RRC message with a message name such as group paging message, class paging message, and the like; or in other RRC messages; or in a control element MAC CE of media access control with a message name such as inventory request, search request, lookup request, and the like; or in a downlink control indicator (DCI).

[0589] The third node confirms an A-IoT related session or service according to the session identity and / or first logical channel identity and / or first mapped session identity.

[0590] The third node confirms a reason for triggering an A-IoT related process according to the paging reason / cause.

[0591] The third node confirms a group of A-IoT devices which are required to perform the communication according to the group related information.

[0592] The third node confirms resources to be used in subsequent communication with the fourth node according to the first resource related information.

[0593] The third node confirms, according to the list of preamble related information, preamble related information that can be used by the fourth node in subsequent communication with the fourth node.

[0594] At step 5, upon receipt of the fourth information, the third node confirms that it is necessary to perform the A-IoT related communication with the fourth node and / or confirm the session related information corresponding to the A-IoT related operation according to the content of the fourth information, and transmits fifth information to at least one fourth node, wherein the fifth information is used by the third node for performing the A-IoT related operation on the fourth node.

[0595] The fifth information comprises at least one of the following information:

[0596] session related information for providing information related to a session or service of the A-IoT;

[0597] random access preset value related information for subsequent random access of the A-IoT device;

[0598] second resource related information comprising resources for subsequent communication of the fourth node with the third node, and / or comprising carrier related resources needed to be received by the fourth node (for uplink transmission of the fourth node);

[0599] a list of preamble related information, which is used for subsequent communication of the fourth node with the third node; or

[0600] group related information for describing a group of A-IoT devices.

[0601] The session related information comprises at least one of the following information: a session identity, a first logical channel identity, or a first mapped session identity.

[0602] For the second resource related information, in one implementation, if the second information comprises the resource pool related information, the third node may select and determine the second resource related information according to the resource pool related information and comprise it in the fifth information, in which case the second resource related information is a subset of the resource pool related information. In another implementation, if the fourth information comprises the first resource related information, the third node may select and determine the second resource related information according to the first resource related information and comprise it in the fifth information, in which case the second resource related information is a subset of the first resource related information. In a further implementation, if the fourth information comprises the first resource related information, the third node directly uses the first resource related information received as the second resource related information comprised in the fifth information, in which case the second resource related information is the first resource related information.

[0603] The list of preamble related information may comprise one or more preamble related identities or indexes.

[0604] The fifth information may be comprised in a first interface message between the intermediate user equipment and the A-IoT device with a message name such as group paging message, group inventory message, A-IoT operation message, and the like; or in a MAC CE with a name such as group inventory, A-IoT operation, and the like; or in a DCI.

[0605] The fourth node confirms an A-IoT related session or service according to the session related information.

[0606] The fourth node confirms whether it belongs to the group of A-IoT devices being inventoried according to the group related information.

[0607] Optionally, a possible implementation is that the fourth node may confirm it belongs to the group of A-IoT devices being inventoried if the fifth information does not include the group related information.

[0608] The fourth node confirms resources to be used in subsequent communication with the third node according to the second resource related information.

[0609] The fourth node confirms the preamble related information to be used in subsequent communication with the third node according to the list of preamble related information.

[0610] The fourth node generates a first random number for subsequent random access based on the random access preset value related information and saves the first random number.

[0611] At step 6, optionally, the third node will transmit at least one piece of sixth information to the fourth node after transmitting the fifth information. The sixth information is used by the fourth node to determine a subsequent point in time to initiate the random access.

[0612] The sixth information comprises at least session related information, and is used to provide information related to a session or service of the A-IoT.

[0613] The session related information comprises at least one of the following information: a session identity, a first logical channel identity, or a first mapped session identity.

[0614] The sixth information may be comprised in the first interface message with a message name such as group repetition message, group response message, and the like; or in a MAC CE with a name such as group repetition, group response, and the like; or in a DCI.

[0615] The fourth node identifies a corresponding A-IoT related session or service according to the session related information. If the fourth node confirms that the session related information comprised in the sixth information matches the session related information comprised in the fifth information, the fourth node subtracts the value of the first random number stored by one every time the sixth information is received. If the value after subtracting one is not zero, the value after subtracting one is stored as a new first random number, otherwise if the value after subtracting one is zero, the fourth node selects a preamble based on the list of preamble related information comprised in the fifth information, and the fourth node transmits the selected preamble at a corresponding resource based on the second resource related information comprised in the fifth information.

[0616] At step 7a, optionally, the third node may transmit seventh information to the second node for providing the second node with information related to the random access of the fourth node to allow the second node to determine the update of the random access pre-determined value.

[0617] The seventh information comprises at least one of the following information:

[0618] a suggested or recommended updated random access preset value;

[0619] ancillary information related to an update of the random access preset value; or

[0620] reporting information based on the first configuration information.

[0621] The assistance information related to the update of the random access preset value comprises at least one of the following information:

[0622] information related to the number of conflicts for providing the number of times of random access conflicts detected by the third node in a period of time;

[0623] idle time related information for providing a length of time during which the third node has not detected any random access, or for providing the number of the repetitive signaling that the third node has not detected any random access after transmitting at least one repetitive signaling related to the random access; or

[0624] idle ratio related information for providing a ratio of the number of times of random accesses initiated by the A-IoT device detected by the third node in a period of time and the number of times that the third node transmitted the repetitive signaling, after the transmitted repetitive signaling related to the random accesses reaches certain number of times.

[0625] The reporting information based on the first configuration information comprises at least one of the following information:

[0626] information related to or indicative of the fact that the number of conflicts has reached a threshold value;

[0627] information related to or indicative of the fact that the idle time has reached a threshold value;

[0628] information related to or indicative of the fact that the number of idle times has reached a threshold; or

[0629] information related to or indicative of the fact that the idle ratio has reached a threshold value.

[0630] The seventh information may be comprised in an RRC measurement reporting message; in an RRC user equipment assistance information message; or in other RRC messages, and it may also be comprised in a MAC CE with a name such as random access preset value update assistance information.

[0631] At step 7b, optionally, the second node, upon receipt of the seventh information, updates the random access preset value based on the content of the seventh information, and transmits the information related to the update of the random access preset value to the third node via eighth information.

[0632] The eighth information may be comprised in an RRC message with a message name such as group update message, and the like; in an RRC reconfiguration message; in other RRC messages; in a MAC CE with a name such as group update, and the like; or in a DCI.

[0633] At step 7, optionally, the third node may transmit ninth information to the fourth node. The ninth information may be used to update the random access preset value.

[0634] The ninth information comprises at least one of the following information:

[0635] session related information for providing information related to a session or service of the A-IoT; and

[0636] information related to the update of the random access preset value.

[0637] The session related information comprises at least one of the following information: a session identity, a first logical channel identity, or a first mapped session identity.

[0638] It is noted that the third node may transmit a plurality of the ninth information to the fourth node for the same session related information, i.e., the random access preset value is adjusted many times.

[0639] The ninth information may be comprised in the first interface message with a message name such as group update message, and the like; or in a MAC CE with a name such as group update, and the like; or in a DCI.

[0640] The fourth node identifies a corresponding A-IoT related session or service according to the session related information. If the fourth node confirms that the session related information comprised in the ninth information matches the session related information comprised in the fifth information, the fourth node updates the random access preset value based on the information related to the update of the random access preset value, and generates a new first random number for subsequent random accesses based on the updated random access preset value, and saves the first random number.

[0641] It is noted that steps 6 and 7 are not in a strict order of precedence.

[0642] At step 8, the fourth node transmits tenth information for the random access to the third node according to the second resource related information comprised in the fifth information.

[0643] The tenth information comprises at least one of the following information: a first preamble sequence and a first random sequence.

[0644] It is noted that based on different implementations, the sequences comprised in the tenth information are different. In one implementation, if the fifth information comprises the list of preamble related information, the fourth node, when performing the random access, selects a preamble sequence based on the list of preamble related information and comprises the selected preamble sequence in the tenth information, and transmits it to the third node. In another implementation, the fourth node pre-stores or is pre-configured with a set of preamble sequences, and when the random access is required, selects a preamble sequence and comprises the selected preamble sequence in the tenth information and transmits it to the third node. In a further implementation, the fourth node comprises a random sequence generator, and when the random access is required, the random access generator generates a first random sequence and comprises the generated first random sequence in the tenth information and transmits it to the third node.

[0645] At step 9, the third node transmits, to the fourth node, eleventh information for responding to the tenth information upon receipt of the tenth information.

[0646] The eleventh information comprises at least one of the following information:

[0647] a second value for use by the A-IoT device in determining to perform a fallback related operation;

[0648] an identity corresponding to a first preamble sequence or a first preamble sequence, for use by the third node in response to having received the first preamble sequence;

[0649] a first random sequence for use by the third node in response to having received the first random sequence; or

[0650] third resource related information comprising resources for use by a subsequent fourth node in communication with the third node and / or comprising carrier-related resources to be received by the fourth node (for uplink transmission by the fourth node).

[0651] The eleventh information may be comprised in the first interface message with a message name such as group response message, and the like; in a MAC random access response; in a MAC CE with a name such as receive success, and the like; or in a DCI.

[0652] The fourth node determines whether to match with the tenth information previously transmitted to the third node according to the received identity corresponding to the first preamble sequence or the first preamble sequence or the first random sequence. If matched, then the fourth node determines the resources to be used in subsequent communication with the third node according to the third resource related information, otherwise if not matched, then the fourth node determines to perform the fallback related operation and determines a fallback value based on the second value.

[0653] It is noted that the fourth node uses the fallback value in a similar manner as it uses the first random number. Only when or after the fallback value is reduced to zero, the fourth node is able to transmit tenth information to the third node again.

[0654] At step 10, the fourth node, upon receipt of the eleventh information, confirms that the third node has received the tenth information according to the content of the eleventh information, and transmits the A-IoT device related information to the third node.

[0655] At step 11, the third node transmits twelfth information to the second node for transmitting the A-IoT device related information to the second node.

[0656] The twelfth information comprises at least one of the following information:

[0657] session related information for providing information related to a session or service of the A-IoT; and

[0658] A-IoT device related information.

[0659] The session related information comprises at least one of the following information: a session identity, a first logical channel identity, or a first mapped session identity.

[0660] The twelfth information may be comprised in an RRC message with a message name such as A-IoT device information message, RRC establishment request message, user equipment assistance information message, uplink information transport message, side link user equipment information message, and the like, or it may be comprised in a MAC CE with a name such as A-IoT device Information, and the like.

[0661] The second node identifies a corresponding A-IoT related session or service according to the session related information.

[0662] At step 12, the second node, upon receipt of the twelfth information, assigns a first local identity to the A-IoT device, the first local identity is used to uniquely identify an A-IoT device within the second node or within the third node. The second node transmits the first local identity to the third node, and the third node transmits the first local identity to the fourth node.

[0663] The first local identity may be comprised in an RRC message with a message name such as A-IoT device information message, and the like; or in a MAC CE with a name such as conflict resolution, A-IoT device identity, and the like.

[0664] The third node uses the first local identity as a fourth node identity for subsequent communication with the fourth node.

[0665] The fourth node uses the first local identity as a fourth node identity for subsequent communication with the third node.

[0666] At step 13, the first node performs a context establishment process with the second node, with respect to the fourth node.

[0667] At step 14, after the first node and the second node have completed the context establishment process, the first node may transmit thirteenth information to the second node. The thirteenth information may be used to perform non-access stratum related operations (e.g., access operations, read / write operations, locking operations, storage operations, etc.) on the fourth node.

[0668] The thirteenth information comprises at least one of the following information:

[0669] fourth node related identity information for identifying the fourth node targeted by the non-access stratum related operation;

[0670] a session identity for identifying a session or service of one A-IoT;

[0671] a non-access stratum message related information element or a non-access stratum packet data unit comprising, for example, non-access stratum related operation requests or commands; or

[0672] fourth node response related information for providing information related to whether a non-access stratum related operation requires a response from the fourth node.

[0673] The thirteenth information may be comprised in an existing NGAP DOWNLINK NAS TRANSPORT message or in other NGAP messages.

[0674] The second node confirms the fourth node targeted by the non-access stratum related operation according to the fourth node related identity information.

[0675] The second node identifies a corresponding A-IoT related session or service according to the session identity.

[0676] Optionally, the second node confirms whether it is necessary to provide resources required for a subsequent response from the fourth node to the third node according to the fourth node response related information.

[0677] At step 15, the second node, upon receipt of the thirteenth information, transmits fourteenth information to the third node according to the content of the thirteenth information. The fourteenth information is used to transmit non-access stratum related operations to the fourth node, and / or to provide the third node with resources to be used in subsequent interactions with the fourth node.

[0678] The fourteenth information comprises at least one of the following information:

[0679] session related information for providing information related to a session or service of the A-IoT;

[0680] a non-access stratum message related information element or a non-access stratum packet data unit comprising non-access stratum related operation requests or commands;

[0681] the first local identity for the third node to confirm a fourth node that is required for the A-IoT communication; or

[0682] fourth resource related information comprising resources available for A-IoT related transmissions from the intermediate user equipment to the A-IoT device, and / or comprising resources available for A-IoT related transmissions from the A-IoT device to the intermediate user equipment, and / or comprising the available carrier wave (CW) related resources.

[0683] The session related information comprises at least one of the following information: a session identity, a first logical channel identity, or a first mapped session identity.

[0684] The fourteenth information may be comprised in an existing RRC downlink information transport message; or in an existing user equipment information request message; or in other RRC messages; or in a MAC CE with a message name such as operation command, operation request, and the like; or in a DCI.

[0685] The third node confirms an A-IoT related session or service according to the session related information.

[0686] The third node identifies a fourth node that is required to be communicated with according to the first local identity.

[0687] The third node confirms a resource to be used in subsequent communication with the fourth node according to the fourth resource related information.

[0688] At step 16, the third node, after receiving the fourteenth information, transmits fifteenth information to the fourth node according to the content of the fourteenth information. The fifteenth information is used to transmit non-access stratum related operations, and / or to provide the fourth node with resources to be used in subsequent interactions with the third node.

[0689] The fifteenth information comprises at least one of the following information:

[0690] session related information for providing information related to a session or service of the A-IoT;

[0691] a non-access stratum message related information element or a non-access stratum packet data unit comprising non-access stratum related operation requests or commands, and the like;

[0692] the first local identity for the third node to confirm a fourth node that is required for the A-IoT communication; or

[0693] fifth resource related information, comprising resources for use by the subsequent fourth node in communication with the third node, and / or comprising carrier related resources to be received by the fourth node (for uplink transmission by the fourth node).

[0694] The session related information comprises at least one of the following information: a session identity, a first logical channel identity, or a first mapped session identity.

[0695] It is noted that for the fifth resource related information transmitted by the third node, one implementation is that the third node confirms the fifth resource related information according to the fourth resource related information comprised in the received fourteenth information, and another implementation is that the third node selects the fifth resource related information for the subsequent communication with the fourth node based on the resource pool related information comprised in the received second information.

[0696] The fifteenth information may be comprised in the first interface message with a message name such as a downlink information transport message, a user equipment information request message, a notification message, an A-IoT operation message, and the like; or in a MAC CE with a message name such as an operation command, an operation request, and the like; or in a physical layer control message.

[0697] The fourth node confirms an A-IoT related session or service according to the session related information.

[0698] The fourth node confirms itself as a fourth node required to receive the fifteenth information according to the first local identity.

[0699] The fourth node confirms resources to be used in subsequent communication with the third node according to the fifth resource related information.

[0700] At step 17, optionally, if the fourth node confirms that a response is required according to the content of the fifteenth information, the fourth node responds according to the fifth resource related information comprised in the fifteenth information, the response comprising at least a non-access stratum message related information element or a non-access stratum packet data unit.

[0701] The response may be comprised in the first interface message with a message name such as uplink information transport message, user equipment information response message, notification message, A-IoT response message, and the like; or in a MAC CE with a message name such as operation response, and the like.

[0702] At step 18, optionally, if the third node receives an A-IoT related response from the fourth node, the third node transmits sixteenth information to the second node for transmitting the received related response to the second node.

[0703] The sixteenth message comprises at least one of the following information:

[0704] session related information for providing information related to a session or service of the A-IoT;

[0705] a non-access stratum message related information element or a non-access stratum packet data unit comprising, non-access stratum related operational responses; or

[0706] the first local identity, which is used for the second node to confirm the fourth node responds.

[0707] The session related information comprises at least one of the following information: a session identity, a first logical channel identity, or a first mapped session identity.

[0708] The sixteenth information may be comprised in an RRC message with a message name such as uplink information transport message, user equipment information response message, A-IoT device information, and the like; or in a MAC CE with a message name such as operation response, and the like.

[0709] The second node confirms an A-IoT related session or service according to the session related information.

[0710] The second node confirms a fourth node responding according to the first local identity.

[0711] By the above method, it is ensured that the network side can obtain the related information stored by the A-IoT device by means of using an intermediate user equipment, and furthermore, by means of establishing a context at the network side, the relevant commands or operations can be performed on the A-IoT device by the intermediate user equipment. Thereby, normal communication between the network side and the A-IoT device is ensured.

[0712] Fig. 10 illustrates an example method of A-IoT signaling or data transmission according to the present disclosure. As shown in Fig. 10,

[0713] at step 1, the first node triggers an A-IoT related process, which may be used to inventory the A-IoT devices: the first node transmits seventeenth information to the second node.

[0714] The seventeenth information comprises at least one of the following information:

[0715] a session identity for identifying a session or service of one A-IoT;

[0716] a service area for describing area related information corresponding to the A-IoT related process;

[0717] at least one reader related identity for providing information related to a reader participating in inventories;

[0718] at least one time window related information for providing time window information related to the inventories;

[0719] a first duration for providing, to the fourth node, related information of a duration during which the fourth node no longer responds to some or all of the inventories after being successfully inventoried; or

[0720] group related information for describing a group of A-IoT devices.

[0721] The reader related identity comprised in the at least one reader related identity comprises at least one of the following information:

[0722] NG interface application layer protocol user equipment identity;

[0723] a transmission-reception point identity; or

[0724] a cell related identity, such as a cell global identity.

[0725] The time window related information comprised in the at least one time window related information comprises at least one of the following: time window starting time / moment, time window duration, or time window ending time / moment.

[0726] It is to be noted that the exact type of identity comprised in the reader related identity depends on different situations. If the reader is an intermediate user equipment or in the intermediate user equipment, the reader related identity corresponds to an NG Interface application layer protocol user equipment identity, and if the reader is in a base station, the reader related identity corresponds to a transmission-reception point identity or a cell related identity.

[0727] It is also noted that in one implementation, the first node determines the readers participating in the inventories, in which case the seventeenth information may comprise the at least one reader-related identity. In one implementation, the first node determines the readers participating in the inventories, and the first node determines the time window related information corresponding to each of the readers participating in the inventories, in which case the seventeenth information may comprise the at least one reader-related identity, and the at least one time window related information corresponds one-to-one with the reader-related identity. In another implementation, the first node determines the readers participating in the inventories, and the first node determines a total time window related information corresponding to all the readers participating in the inventories under a base station, in which case the seventeenth information may comprise the at least one reader related identity and comprise one piece of time window related information. In another implementation, the first node determines an area participating in the inventories, in which case the seventeenth information may comprise a service area. In a further implementation, the first node determines the area participating in the inventories, in which case the seventeenth information may comprise a service area, and the second node determines the readers participating in the inventories based on the service area.

[0728] It is also noted that in one implementation, the at least one reader-related identity may also be a sequential list of reader-related identities for the second node to confirm the order in which the corresponding readers participates in the inventories.

[0729] The seventeenth information may be comprised in an NG interface application protocol NGAP message with a message name such as group paging message. It may also be comprised in other NGAP messages.

[0730] The second node confirms an A-IoT related session or service initiated by the first node according to the session identity.

[0731] The second node confirms a group of A-IoT devices to be inventoried according to the group related information.

[0732] At step 2, the second node, upon receipt of the seventeenth information, transmits, to the third node, eighteenth information for communicating with the A-IoT devices according to the content of the seventeenth information.

[0733] The eighteenth information comprises at least one of the following information:

[0734] session related information for providing information related to a session or service of the A-IoT;

[0735] time window related information for providing time window information related to the inventory;

[0736] a second duration for providing, to the fourth node, related information of a duration during which the fourth node no longer responds to some or all of the inventory after being successfully inventoried; or

[0737] group related information for describing a group of A-IoT devices.

[0738] The session related information comprises at least one of a session identity, a first logical channel identity, or a first mapped session identity.

[0739] The inventory time window related information comprises at least one of a time window starting time / moment, a time window duration, or a time window ending time / moment.

[0740] It should be noted that in one implementation, a first node determines the readers participating in the inventories and the first node determines the time window related information corresponding to each of the readers participating in the inventories, in which case the time window related information comprised in the eighteenth information corresponds to the time window related information comprised in the seventeenth information. In another implementation, the first node determines the readers participating in the inventories and the first node determines a total time window related information corresponding to all the readers participating in the inventories under a base station, in which case a second node determines the time window related information corresponding to each of the readers participating in the inventories and is comprised in the eighteenth information. In a further implementation, the second node determines the readers participating in the inventories according to the service area comprised in the received seventeenth information, in which case if the seventeenth information also comprises the total time window related information, the second node determines, according to the total time window related information, the time window related information corresponding to each of the readers participating in the inventories and is comprised in the eighteenth information, in a specific manner for example the second node divides the total time window into at least one sub-time window, each of which corresponds to one of the readers participating in the inventories.

[0741] It is also noted that in one implementation, the second node directly transmits the received first duration as the second duration to the third node. In another implementation, the second node generates the second duration and transmits it to the third node based on the received first duration and / or at least one time window related information comprised in the seventeenth information and / or the at least one sub-time window divided by the second node, in a specific manner for example using the first duration minus the time window related information corresponding to all readers that have previously participated in the inventory as the second duration.

[0742] It is also noted that in one implementation, the second node determines the order of the readers participating in the inventories.

[0743] The eighteenth information may be comprised in a radio resource control RRC message with a message name such as group paging message, inventory message, and the like; or in other RRC messages; or in a control element MAC CE of media access control with a message name such as inventory request, and the like; or in a downlink control indicator (DCI).

[0744] The third node confirms an A-IoT related session or service according to the session related information.

[0745] The third node confirms a group of A-IoT devices to be inventoried according to the group related information.

[0746] At step 3, the third node, upon receipt of the eighteenth information, transmits, to the fourth node, nineteenth information for communicating with the A-IoT device, according to the content of the eighteenth information, and / or the second node transmits, to the fourth node, nineteenth information for communicating with the A-IoT device.

[0747] The nineteenth information comprises at least one of the following information:

[0748] session related information for providing information related to a session or service of the A-IoT;

[0749] a third duration for providing, to the fourth node, related information of a duration during which the fourth node no longer responds to some or all of the inventories after being successfully inventoried;

[0750] group related information for describing a group of A-IoT devices; or

[0751] reader identity for identifying a reader.

[0752] The session related information comprises at least one of a session identity, a first logical channel identity, or a first mapped session identity.

[0753] It is noted that in one implementation, a third node directly transmits the received second duration as the third duration to the fourth node. In another implementation, the third node generates the third duration and transmits it to the fourth node based on the received second duration and / or time elapsed from the reception of the eighteenth information to the transmission of the nineteenth information, in a specific manner, for example, using the second duration minus the time elapsed from the reception of the eighteenth information to the transmission of the nineteenth information as the third duration.

[0754] The nineteenth information may be comprised in the first interface message with a message name such as inventory message, inventory request message, inventory repetition message, inventory response message, inventory adjustment message, and the like; or in a control element MAC CE of the media access control with a message name such as inventory request, inventory repetition, inventory response, inventory adjustment, and the like; or in a physical layer control message.

[0755] The fourth node confirms an A-IoT related session or service according to the session related information.

[0756] The fourth node confirms itself as an A-IoT device that needs to be inventoried according to the group related information.

[0757] It is noted that when the fourth node has completed the inventory (i.e., after transmitting the A-IoT device related information as in step 10 of Fig. 9), and / or after completing the A-IoT related operation, a timer may be started or restarted based on the third duration, and when the timer has not expired: in one implementation, the fourth node will no longer respond to the received inventory related message (i.e., initiate a new random access procedure); in another implementation, the fourth node will no longer initiate a new random access procedure for the received inventory related message comprising the same session related information; in another implementation, the fourth node will no longer initiate a new random access procedure for the received inventory related message comprising the same group related information; in a further implementation the fourth node will not initiate a new random access procedure for the received inventory related message comprising the same reader identity.

[0758] It is also to be noted that there is no strict sequence between steps 2 and 3 if the nineteenth information is transmitted by a second node.

[0759] By the above method, it is ensured by network side control that it does not happen that the same A-IoT device is inventoried by two different readers in a same time period, thus avoiding that the A-IoT device performs the relevant operation on the received instruction which is not actually addressed to the device. In addition, by starting or restarting the timer in the A-IoT device, a situation in which different readers inventory to the same A-IoT device in different time periods can be avoided, thus improving the inventory efficiency.

[0760]

[0761] Based on the same principles as the method provided in the present disclosure, the embodiments of the present disclosure also provide a node in a communication system that may comprise at least one transceiver, and at least one processor coupled to the at least one transceiver, the at least one processor is configured to perform the steps of the method provided in any optional embodiment of the present disclosure.

[0762] An embodiment of the present application further provides an electronic device, including at least one transceiver and at least one processor coupled to the at least one transceiver. The at least one processor is configured to implement the method provided in any optional embodiment of the present disclosure.

[0763] Fig. 11 shows a schematic structure diagram of an electronic device 4000 to which the solution of the embodiment of the present application is applied. As shown in Fig. 11, the electronic device 4000 shown in Fig. 11 may include a processor 4001 and a memory 4003. The processor 4001 is connected to the memory 4003, for example, through a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004. The transceiver 4004 may be used for data interaction between this electronic device and other electronic devices, such as the transmitting of data and / or the receiving of data. It should be noted that, in practical applications, the transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute any limitations to the embodiments of the present disclosure. Optionally, the electronic device may be a first network node, a second network node, or a third network node.

[0764] The processor 4001 may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules and circuits described in connection with the present disclosure. The processor 4001 may also be a combination for realizing computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0765] The bus 4002 may include a path to transfer information between the components described above. The bus 4002 may be a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus, and the like. The bus 4002 may be an address bus, a data bus, a control bus, and the like. For ease of presentation, the bus is represented by only one thick line in Fig. 11. However, it does not mean that there is only one bus or one type of buses.

[0766] The memory 4003 may be, but not limited to, read only memories (ROMs) or other types of static storage devices that can store static information and instructions, random access memories (RAMs) or other types of dynamic storage devices that can store information and instructions, may be electrically erasable programmable read only memories (EEPROMs), compact disc read only memories (CD-ROMs) or other optical disk storages, optical disc storages (including compact discs, laser discs, discs, digital versatile discs, blue-ray discs, etc.), magnetic storage media or other magnetic storage devices, or any other media that can carry or store desired program codes in the form of instructions or data structures and that can be accessed by computers.

[0767] The memory 4003 is used to store application program codes for executing the embodiments of the present application, and is controlled by the processor 4001. The processor 4001 is used to execute the computer program codes stored in the memory 4003 to implement the steps shown in the foregoing method embodiments.

[0768] The embodiments of the present disclosure provide a computer-readable storage medium having stored thereon a computer program, that when executed by a processor, implements the steps and corresponding contents of the foregoing method embodiments.

[0769] The embodiments of the present disclosure also provide a computer program product including a computer program, that when executed by a processor, implements the steps and corresponding contents of the preceding method embodiments.

[0770] The terms "first", "second", "third", "fourth", "1", "2", etc. (if present) in the specification and claims of this application and the accompanying drawings above are used to distinguish similar objects and need not be used to describe a particular order or sequence. It should be understood that the data so used is interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described in the text.

[0771] It should be understood that while the flow diagrams of the embodiments of the present disclosure indicate the individual operational steps by arrows, the order in which these steps are performed is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of the embodiments of the present disclosure, the implementation steps in the respective flowcharts may be performed in other orders as desired. In addition, some, or all of the steps in each flowchart may include multiple sub-steps or multiple phases based on the actual implementation scenario. Some or all of these sub-steps or stages can be executed at the same moment, and each of these sub-steps or stages can also be executed at different moments separately. The order of execution of these sub-steps or stages can be flexibly configured according to requirements in different scenarios of execution time, and the embodiments of the present disclosure are not limited thereto.

[0772] The above-mentioned description and the drawings are provided merely as examples to help readers to understand the present disclosure, and they should not be interpreted or aim to limit the scope of the present disclosure in any way. Although some embodiments are provided, it is apparent for those skilled in the art to adopt other similar implementation means based on the technical idea of the present disclosure without departing from the technical concepts of the solutions of the present disclosure.

Claims

1.A method performed by a third node in a wireless communication system, the method comprising:determining a random access preset value based on a first value related to random access received from a second node or first configuration information related to determining a value for the random access, or transmitting seventh information to the second node, and receiving eighth information transmitted by the second node based on the random access preset value determined by the seventh information, the eighth information comprising information related to the random access preset value; andtransmitting the determined information related to the random access preset value to a fourth node,wherein the first configuration information comprises at least one of the following:information for indicating to update the random access preset value;a threshold value for number of conflicts;an idle-related threshold value; oran amount of change in the random access preset value;wherein the seventh information comprises at least one of the following:information related to a third value related to the random access;information related to the number of conflicts;idle time related information;idle ratio related information;information related to the number of conflicts having reached a threshold value;information related to the idle time having reached a threshold value;information related to number of idle times having reached a threshold value; orinformation related to the idle ratio having reached a threshold value.2.The method of claim 1, further comprising:transmitting first information to the second node, the first information comprising information relating to the capability of the third node to support being an intermediate user equipment; andreceiving second information transmitted by the second node;wherein the second information comprises at least one of the following:resource pool related information;radio bearer related information;a list of preamble related information; orfirst configuration information related to determining a preset value for the random access.3.The method of claim 1, further comprising:receiving fourth information transmitted by the second node;wherein the fourth information comprises at least one of the following:a session identity;a paging reason / cause;group related information comprising information related to a group of Ambient Internet-of-Things (A-IoT) devices;the random access preset value related information;a list of preamble related information;first configuration information related to determining a preset value for the random access;a first logical channel identity;a first mapped session identity; orfirst resource related information.4.The method of claim 1, further comprising:receiving a first local identity transmitted by the second node; andtransmitting the first local identity to the fourth node,wherein the first local identity is used to uniquely identify an Ambient Internet-of-Things (A-IoT) device within the second node or within the third node, wherein, the first local identity is assigned to the A-IoT device by the second node upon receipt of twelfth information,wherein the twelfth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity; orA-IoT device related information.5.The method of claim 1, further comprising:receiving fourteenth information transmitted by the second node; and / ortransmitting sixteenth information to the second node,wherein the fourteenth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;a non-access stratum message related information element or a non-access stratum packet data unit;a first local identity which identifies the fourth node; orfourth resource related information,wherein the sixteenth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;a non-access stratum message related information element or a non-access stratum packet data unit; ora first local identity which identifies the fourth node.6.A method performed by a fourth node in a wireless communication system, the method comprising:receiving a determined random access preset value from a third node; andperforming random access based on the determined random access preset value,wherein the random access preset value comprises one of the following:a random access preset value determined by the third node based on a first value related to the random access received from a second node or first configuration information related to determining a value for the random access; anda random access preset value determined by the second node based on seventh information received from the third node, information related to the random access preset value being transmitted by the second node to the third node via eighth information,wherein the first configuration information comprises at least one of the following:information for indicating to update the random access preset value;a threshold value for number of conflicts;an idle-related threshold value; oran amount of change in the random access preset value,wherein the seventh information comprises at least one of the following:information related to a third value related to the random access;information related to the number of conflicts;idle time related information;idle ratio related information;information related to the number of conflicts having reached a threshold value;information related to the idle time having reached a threshold value;information related to number of idle times having reached a threshold value; orinformation related to the idle ratio having reached a threshold value.7.The method of claim 6, further comprising:receiving fifth information transmitted by the third node, the fifth information comprising at least one of session related information, the random access preset value related information, second resource related information, a list of preamble related information, or group related information comprising information related to a group of Ambient Internet-of-Things (A-IoT) devices;receiving at least one piece of sixth information transmitted by the third node, the sixth information comprising the session related information;receiving ninth information transmitted by the third node, the ninth information comprising at least one of the session related information and information related to an update of the random access preset value;transmitting tenth information to the third node according to the second resource related information comprised in the fifth information; andreceiving eleventh information transmitted by the third node,wherein the tenth information comprises at least one of a first preamble sequence and a first random sequence, and the eleventh information comprises at least one of a second value related to a fallback operation, an identity corresponding to the first preamble sequence or the first preamble sequence, the first random sequence, or third resource related information.8.A method performed by a second node in a wireless communication system, the method comprising:receiving seventh information transmitted by a third node, and determining a random access preset value according to the seventh information; andtransmitting eighth information to the third node, the eighth information comprising information related to the random access preset value,wherein the seventh information comprises at least one of the following:information related to a third value related to random access;information related to number of conflicts;idle time related information;idle ratio related information;information related to the number of conflicts having reached a threshold value;information related to the idle time having reached a threshold value;information related to number of idle times having reached a threshold value; orinformation related to the idle ratio having reached a threshold value.9.The method of claim 8, further comprising:assigning a first local identity to an Ambient Internet-of-Things (A-IoT) device, the first local identity being used to uniquely identify the A-IoT device within the second node or within the third node; andtransmitting the first local identity to the third node.10.The method of claim 8, further comprising:receiving third information transmitted by a first node;wherein the third information comprises at least one of the following:a session identity or a service identity;a request or indication or a paging reason / cause;a service area or a paging area;group related information comprising information related to a group of Ambient Internet-of-Things (A-IoT) devices; orinventory related information, andwherein the method further comprises:receiving thirteenth information transmitted by a first node; andtransmitting fourteenth information to the third node according to the thirteenth information,wherein the thirteenth information comprises at least one of a session identity, a non-access stratum message related information element or a non-access stratum packet data unit, or a fourth node response related information,wherein the fourteenth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;a non-access stratum message related information element or a non-access stratum packet data unit;a first local identity which identifies a fourth node; orfourth resource related information.11.A method performed by a third node in a wireless communication system, the method comprising:receiving eighteenth information transmitted by a second node; andtransmitting nineteenth information to a fourth node according to the eighteenth information,wherein the eighteenth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;inventory time window related information;a second duration related to not to respond to some or all of inventories again; orgroup related information comprising information related to a group of Ambient Internet-of-Things (A-IoT) devices,wherein the nineteenth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;a third duration related to not to respond to some or all of the inventories again;group related information comprising information related to a group of A-IoT devices; ora reader identity.12.A method performed by a fourth node in a wireless communication system, the method comprising:receiving nineteenth information transmitted by a second node and / or a third node, wherein the nineteenth information comprises a third duration related to not to respond to some or all of inventories again; andstarting or restarting a timer based on the third duration in the nineteenth information,wherein the nineteenth information further comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;group related information comprising information related to a group of Ambient Internet-of-Things (A-IoT) devices; ora reader identity.13.The method of claim 12,wherein the starting or restarting a timer based on the third duration in the nineteenth information by the fourth node is started or restarted after transmitting the A-IoT device related information to the third node and / or completing an operation related to the A-IoT device, andwherein, when the timer has not expired, the fourth node no longer initiates a new random access procedure with respect to at least one of the following:a received inventory related message;a received inventory related message comprising the same session related information;a received inventory related message comprising the same group related information; ora received inventory related message comprising the same reader identity.14.A method performed by a second node in a wireless communication system, comprising:receiving seventeenth information transmitted by a first node, and transmitting eighteenth information to a third node according to the seventeenth information; and / ortransmitting nineteenth information to a fourth node,wherein the seventeenth information comprises at least one of the following:a session identity;a service area;at least one reader related identity;at least one time window related information;a first duration related to not to respond to some or all of inventories again; orgroup related information comprising information related to a group of Ambient Internet-of-Things (A-IoT) devices,wherein the eighteenth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;inventory time window related information for providing time window information related to the inventories;a second duration related to not to respond to some or all of the inventories again; orgroup related information comprising information related to a group of A-IoT devices,wherein the nineteenth information comprises at least one of the following:session related information comprising at least one of a session identity, a first logical channel identity, or a first mapped session identity;a third duration related to not to respond to some or all of the inventories again;group related information comprising information related to a group of A-IoT devices; ora reader identity.15.A node in a wireless communication system, wherein the node comprises at least one transceiver, and at least one processor coupled to the at least one transceiver, the at least one processor being configured to perform the steps of the methods of any of claims 1 to 14.

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