Communication method and apparatus, and storage medium

Abstract

The present disclosure provides a communication method and apparatus, and a storage medium. In the present disclosure, an Ambient IoT device receives first signaling that is sent by a first communication device and used for performing random access by the Ambient IoT device, the first signaling comprising first indication information used for indicating a first parameter value, such that the Ambient IoT device can determine a random access occasion on the basis of the first parameter value, so as to ensure that an Ambient IoT device newly entering the network coverage can establish a connection with the first communication device more quickly, thereby improving the access efficiency of the Ambient IoT device.

Description

Communication method, device, and storage medium Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to a communication method and device, and a storage medium. Background Art

[0002] The Ambient Internet of Things (Ambient IoT) is an IoT technology that harnesses energy from the environment to power devices. It can automatically power IoT devices like sensors and tags, reducing the need for battery replacement or charging, and improving the reliability and availability of IoT devices. Ambient IoT supports a variety of use cases, including tag inventory.

[0003] During multiple inventory rounds, Ambient IoT devices can only access the network at the beginning of a round. If an Ambient IoT device enters the network coverage area during a round of inventory, it can only access the network during the next round of inventory.

[0004] Summary of the Invention

[0005] In order to ensure that Ambient IoT devices that have newly entered the network coverage area can quickly join the network, the embodiments of the present disclosure provide a communication method and apparatus, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, which is applied to a passive Ambient IoT device. The method includes:

[0007] receiving first signaling sent by a first communication device, where the first signaling is used for the Ambient IoT device to perform random access, the first signaling including first indication information, where the first indication information is used to indicate a first parameter value;

[0008] A timing for performing random access is determined based on the first parameter value.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, applied to a first communication device, the method including:

[0010] A first signaling is sent to an Ambient IoT device, where the first signaling is used for the Ambient IoT device to perform random access. The first signaling includes first indication information, where the first indication information is used to indicate a first parameter value, where the first parameter value is used by the Ambient IoT device to determine a timing for performing random access.

[0011] According to a third aspect of an embodiment of the present disclosure, an Ambient IoT device is provided, including:

[0012] a transceiver module configured to receive a first signaling sent by a first communication device, where the first signaling is used for the Ambient IoT device to perform random access, and the first signaling includes first indication information, where the first indication information is used to indicate a first parameter value;

[0013] The processing module is configured to determine a timing for performing random access based on the first parameter value.

[0014] According to a fourth aspect of an embodiment of the present disclosure, there is provided a first communication device, including:

[0015] The transceiver module is configured to send a first signaling to the Ambient IoT device, where the first signaling is used for the Ambient IoT device to perform random access. The first signaling includes first indication information, where the first indication information is used to indicate a first parameter value, and the first parameter value is used by the Ambient IoT device to determine a timing for random access.

[0016] According to a fifth aspect of an embodiment of the present disclosure, an Ambient IoT device is provided, including:

[0017] one or more processors;

[0018] The Ambient IoT device is used to execute the communication method as described in the first aspect.

[0019] According to a sixth aspect of an embodiment of the present disclosure, a first communication device is provided, including:

[0020] one or more processors;

[0021] The first communication device is used to execute the communication method as described in the second aspect.

[0022] According to the seventh aspect of an embodiment of the present disclosure, a communication system is provided, comprising an Ambient IoT device and a first communication device, wherein the Ambient IoT device is configured to implement the communication method as described in the first aspect, and the first communication device is configured to implement the communication method as described in the second aspect.

[0023] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in the first aspect or the second aspect.

[0024] In an embodiment of the present disclosure, a first communication device sends a first signaling for random access of the Ambient IoT device to the Ambient IoT device, and the Ambient IoT device receives the first signaling sent by the first communication device, where the first signaling includes first indication information for indicating a first parameter value, so that the Ambient IoT device can determine the timing for random access based on the first parameter value, thereby ensuring that the Ambient IoT device that newly enters the network coverage can establish a connection with the first communication device more quickly, thereby improving the access efficiency of the Ambient IoT device.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0027] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0028] FIG2 is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure.

[0029] FIG3A is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0030] FIG3B is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0031] FIG3C is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0032] FIG3D is a flow chart of a communication method according to an embodiment of the present disclosure.

[0033] FIG4A is a schematic diagram of the structure of an Ambient IoT device proposed in an embodiment of the present disclosure.

[0034] FIG4B is a schematic structural diagram of a first communication device proposed in an embodiment of the present disclosure.

[0035] FIG5A is a schematic structural diagram of a communication device 5100 proposed in an embodiment of the present disclosure.

[0036] FIG5B is a schematic structural diagram of a chip 5200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0038] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of at least one of the associated listed items.

[0039] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various messages, these messages should not be limited to these terms. These terms are only used to distinguish messages of the same type from each other. For example, a first message may also be referred to as a second message, and similarly, a second message may be referred to as a first message without departing from the scope of this disclosure. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0040] The embodiments of the present disclosure provide a communication method, a device, and a storage medium.

[0041] In a first aspect, an embodiment of the present disclosure provides a communication method applied to a passive Ambient IoT device, the method comprising:

[0042] receiving first signaling sent by a first communication device, where the first signaling is used for the Ambient IoT device to perform random access, the first signaling including first indication information, where the first indication information is used to indicate a first parameter value;

[0043] A timing for performing random access is determined based on the first parameter value.

[0044] In the above embodiment, the Ambient IoT device receives the first signaling sent by the first communication device for random access of the Ambient IoT device, and the first signaling includes first indication information for indicating a first parameter value, so that the Ambient IoT device can determine the timing of random access based on the first parameter value, thereby ensuring that the Ambient IoT device that newly enters the network coverage can establish a connection with the first communication device more quickly, thereby improving the access efficiency of the Ambient IoT device.

[0045] In combination with some embodiments of the first aspect, in some embodiments, the first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing for random access.

[0046] In the above embodiment, the second parameter value indicated by the second information indicating the start and end of this round of inventory is used as the first parameter value to achieve the determination of the first parameter value, thereby ensuring that the Ambient IoT device can determine the random access timing based on the first parameter value.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, determining the timing of performing random access based on the first parameter value includes:

[0048] generating a first random number based on the first parameter value;

[0049] A timing for performing random access is determined based on the first random number.

[0050] In the above embodiment, a method is provided for the Ambient IoT device to determine the timing of random access based on the first parameter value, thereby ensuring that the Ambient IoT device can determine the timing of random access based on the first parameter value.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, generating a first random number based on the first parameter value includes any one of the following:

[0052] The Ambient IoT device does not extend the random access window of the current inventory round, and generates the first random number based on the first parameter value and the third parameter value;

[0053] The Ambient IoT device extends the random access window of the current inventory round and generates the first random number based on the first parameter value, the third parameter value, and the fourth parameter value;

[0054] The third parameter value is used to indicate the time slot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

[0055] In the above embodiment, by providing a method for generating the first random number when the Ambient IoT device extends the random access window of the current inventory round, the flexibility of the first random number generation process is improved, and it is ensured that the first random number can be generated based on the first parameter value.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, generating the first random number based on the first parameter value and the third parameter value includes:

[0057] determining a fifth parameter value based on the first parameter value;

[0058] A plurality of random numbers are generated within a first interval determined based on the fifth parameter value, and a random number within a second interval among the generated plurality of random numbers is determined as the first random number, where the second interval is determined based on the first parameter value and the third parameter value.

[0059] In the above embodiment, a method for generating the first random number is provided when the Ambient IoT device does not extend the random access window of the current inventory round, so as to ensure that the first random number can be generated based on the first parameter value.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, generating the first random number based on the first parameter value, the third parameter value, and the fourth parameter value includes:

[0061] determining a fifth parameter value based on the first parameter value;

[0062] A plurality of random numbers are generated within a first interval determined based on the fifth parameter value, and a random number within a third interval among the generated plurality of random numbers is determined as the first random number, where the third interval is determined based on the first parameter value, the third parameter value, and the fourth parameter value.

[0063] In the above embodiment, a method for generating a first random number when the Ambient IoT device extends the random access window of the current inventory round is provided, so as to ensure that the first random number can be generated based on the first parameter value.

[0064] In conjunction with some embodiments of the first aspect, in some embodiments, determining the fifth parameter value based on the first parameter value includes:

[0065] The fifth parameter value is determined based on the first parameter value and the fourth interval.

[0066] In the above embodiment, by providing a method for the Ambient IoT device to determine the fifth parameter value based on the first parameter value, the smooth progress of the subsequent random number generation process is ensured, thereby ensuring that the Ambient IoT device can determine the timing of random access based on the first parameter value.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, the first interval is [0,2 N+1 -1], the second interval is [0,2 Q -1-M], the third interval is [0,2 Q -1-M+K], the fourth interval is (2 N -1,2 N+1 -1];

[0068] Among them, Q is the first parameter value, M is the third parameter value, K is the fourth parameter value, and N is the fifth parameter value.

[0069] In the above embodiment, a method of determining each interval based on the first parameter value, the third parameter value, the fourth parameter value, and the fifth parameter value is provided to achieve the purpose of determining the timing of random access based on each parameter value.

[0070] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0071] Second indication information sent by the first communication device is received, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory counting.

[0072] In the above embodiment, the first communication device and the Ambient IoT device exchange the second indication information so that the Ambient IoT device can determine whether to expand the random access window of this round of inventory based on the second indication information, thereby adopting a corresponding method to realize the generation of the first random number according to whether the random access window of this round of inventory is expanded or not, so as to improve the flexibility of the generation process of the first random number.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0074] The Ambient IoT device extends the random access window of the current round of inventory counting, and preferentially selects the extended random access opportunity as the random access opportunity.

[0075] In the above embodiment, by providing a specification for the Ambient IoT device to determine the random access timing when the random access window of the current inventory round is extended, the behavior of the Ambient IoT device in selecting the timing for random access is standardized.

[0076] In conjunction with some embodiments of the first aspect, in some embodiments, determining the timing for performing random access based on the first random number includes:

[0077] receiving the first signaling repeatedly sent by the first communication device;

[0078] Each time the first signaling is received, reducing the first random number by a first value;

[0079] A timing when the first random number is reduced to a second value is determined as a timing for performing random access.

[0080] In the above embodiment, a method of determining the random access timing based on the first random number is provided to ensure smooth execution of the random access timing determination process.

[0081] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0082] Report identity authentication information to the first communication device when performing random access.

[0083] In the above embodiment, the Ambient IoT device and the first communication device exchange identity authentication information when performing random access, so that the first communication device can authenticate the Ambient IoT device based on the identity authentication information reported by the Ambient IoT device, thereby achieving access to the Ambient IoT device.

[0084] In conjunction with some embodiments of the first aspect, in some embodiments, reporting identity authentication information to the first communication device at the time of random access includes:

[0085] A second random number is reported to the first communication device when performing random access, where the second random number is used by the first communication device to authenticate the Ambient IoT device.

[0086] In the above embodiment, the second random number is used as the authentication information for the first communication device to authenticate the Ambient IoT device, thereby ensuring smooth authentication of the Ambient IoT device.

[0087] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0088] If the Ambient IoT device has received the first signaling corresponding to this round of inventory, the first indication information included in the currently received first signaling is ignored.

[0089] In the above embodiment, when the Ambient IoT device has received the first signaling corresponding to this round of inventory, the first indication information included in the currently received first signaling is ignored to avoid wasting resources due to repeated determination of the random access opportunity, and at the same time, the increase in the collision probability can be avoided as much as possible.

[0090] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0091] After determining the timing of performing random access based on the first parameter value indicated by the first indication information in the received first signaling, if the first signaling is received again, the first indication information included in the first signaling received again is ignored.

[0092] In the above embodiment, when the Ambient IoT device has completed the determination of the timing for random access based on the first parameter value indicated by the first indication information in the received first signaling, the first indication information included in the first signaling received again is ignored to avoid wasting resources due to repeated determination of the random access timing, and at the same time, to minimize the increase in the probability of collision.

[0093] In a second aspect, an embodiment of the present disclosure provides a communication method, applied to a first communication device, the method comprising:

[0094] A first signaling is sent to an Ambient IoT device, where the first signaling is used for the Ambient IoT device to perform random access. The first signaling includes first indication information, where the first indication information is used to indicate a first parameter value, where the first parameter value is used by the Ambient IoT device to determine a timing for performing random access.

[0095] In the above embodiment, the first communication device sends a first signaling for random access of the Ambient IoT device to the Ambient IoT device, and the first signaling includes a first indication information for indicating a first parameter value, so that the Ambient IoT device can determine the timing of random access based on the first parameter value, thereby ensuring that the Ambient IoT device that newly enters the network coverage can establish a connection with the first communication device more quickly, thereby improving the access efficiency of the Ambient IoT device.

[0096] In combination with some embodiments of the second aspect, in some embodiments, the first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing for random access.

[0097] In combination with some embodiments of the second aspect, in some embodiments, the first parameter value is used by the Ambient IoT device to generate a first random number, and the first random number is used by the Ambient IoT device to determine a timing for random access.

[0098] In conjunction with some embodiments of the second aspect, in some embodiments, the Ambient IoT device does not expand the random access window of the current round of inventory counting, and the first random number is generated based on the first parameter value and the third parameter value;

[0099] The Ambient IoT device extends a random access window for the current round of inventory counting, where the first random number is generated based on the first parameter value, the third parameter value, and the fourth parameter value;

[0100] The third parameter value is used to indicate the time slot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

[0101] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0102] Send second indication information to the Ambient IoT device, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory counting.

[0103] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0104] Repeat the first signaling to the Ambient IoT device.

[0105] In the above embodiment, the first communication device repeatedly sends the first signaling to the Ambient IoT device, so that the Ambient IoT device can determine the random access opportunity based on the repeatedly received first signaling.

[0106] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0107] Receiving identity authentication information reported by the Ambient IoT device when performing random access;

[0108] Authenticate the Ambient IoT device based on the authentication information.

[0109] In conjunction with some embodiments of the second aspect, in some embodiments, receiving the authentication information reported by the Ambient IoT device when performing random access includes:

[0110] A second random number reported by the Ambient IoT device when performing random access is received, where the second random number is used by the first communication device to authenticate the Ambient IoT device.

[0111] In a third aspect, an embodiment of the present disclosure provides an Ambient IoT device, including:

[0112] a transceiver module configured to receive a first signaling sent by a first communication device, where the first signaling is used for the Ambient IoT device to perform random access, and the first signaling includes first indication information, where the first indication information is used to indicate a first parameter value;

[0113] The processing module is configured to determine a timing for performing random access based on the first parameter value.

[0114] In a fourth aspect, an embodiment of the present disclosure provides a first communication device, including:

[0115] The transceiver module is configured to send a first signaling to the Ambient IoT device, where the first signaling is used for the Ambient IoT device to perform random access. The first signaling includes first indication information, where the first indication information is used to indicate a first parameter value, and the first parameter value is used by the Ambient IoT device to determine a timing for random access.

[0116] In a fifth aspect, an embodiment of the present disclosure provides an Ambient IoT device, including:

[0117] one or more processors;

[0118] The Ambient IoT device is used to execute the communication method described in the first aspect and any embodiment of the first aspect.

[0119] In a sixth aspect, an embodiment of the present disclosure provides a first communication device, including:

[0120] one or more processors;

[0121] The first communication device is used to execute the communication method described in the second aspect and any embodiment of the second aspect.

[0122] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including an Ambient IoT device and a first communication device, wherein the Ambient IoT device is configured to implement the communication method described in the above-mentioned first aspect and any embodiment of the first aspect, and the first communication device is configured to implement the communication method described in the above-mentioned second aspect and any embodiment of the second aspect.

[0123] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in the first aspect and any embodiment of the first aspect, the second aspect and any embodiment of the second aspect.

[0124] In the ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the communication method as described in the first aspect and any embodiment of the first aspect, the second aspect and any embodiment of the second aspect.

[0125] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the communication method as described in the first aspect and any embodiment of the first aspect, the second aspect and any embodiment of the second aspect.

[0126] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the communication method described in the first aspect and any embodiment thereof, the second aspect and any embodiment thereof.

[0127] It is understandable that the above-mentioned terminal, first communication device, communication system, storage medium, program product, computer program, chip or chip system are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0128] The present disclosure provides a communication method, apparatus, and storage medium. In some embodiments, the terms "communication method" and "information processing method," "signaling method," and "random access method" are interchangeable; the terms "communication apparatus" and "information processing apparatus," "signaling apparatus," and "random access apparatus" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0129] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0130] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0131] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0132] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0133] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0134] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0135] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0136] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0137] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0138] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0139] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0140] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0141] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0142] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0143] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0144] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0145] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0146] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0147] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0148] FIG1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 includes an ambient IoT device 101 and a first communication device 102 .

[0149] In some embodiments, the Ambient IOT device 101 includes, for example, at least one of sensors (such as temperature sensors, humidity sensors, light sensors, pressure sensors, etc.), actuators (such as motors, actuator valves, etc.), Radio Frequency Identification (RFID) tags, smart home devices (such as smart sockets, smart light bulbs, smart door locks, smart cameras, etc.), smart wearable devices (such as smart watches, smart bracelets, smart glasses, etc.), smart city devices (such as smart traffic lights, smart parking systems, smart trash cans, etc.), industrial Internet of Things devices (such as industrial sensors, smart storage equipment, smart surveillance cameras, etc.), agricultural Internet of Things devices (such as soil moisture detectors, meteorological monitoring equipment, smart irrigation systems, etc.), smart vehicle equipment (such as smart cars, vehicle-mounted sensors, etc.), and medical Internet of Things devices (such as telemedicine equipment, smart health monitors, etc.), but is not limited to these.

[0150] In some embodiments, the first communication device 102 includes at least one of an access network device and a user equipment (UE) used as a reader, but is not limited thereto.

[0151] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0152] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0153] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0154] In some embodiments, the UE used as a reader / writer includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0155] In more possible implementations, the communication system 100 may further include a core network device.

[0156] In some embodiments, a core network device may be a single device including multiple network elements, or may be multiple devices or device groups, each including all or part of multiple network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0157] In some embodiments, the core network device may include a first network element, such as an Access and Mobility Management Function (AMF).

[0158] In some embodiments, the first network element is used for user access management and mobility management, but is not limited thereto.

[0159] In some embodiments, the core network device may include a second network element, which is, for example, a session management function (SMF).

[0160] In some embodiments, the second network element is used for session management of the control plane and the user plane, but is not limited thereto.

[0161] In some embodiments, the core network device may include a third network element, such as a user plane function (UPF).

[0162] In some embodiments, the third network element is used for data forwarding, traffic statistics, quality of service (QoS) management, etc. on the user plane, but is not limited thereto.

[0163] In some embodiments, the core network device may include a fourth network element, which is, for example, a policy control function (PCF).

[0164] In some embodiments, the fourth network element is used to implement user control policy management, including but not limited to QoS control, service access control, etc.

[0165] In some embodiments, the core network device may include a fifth network element, where the fifth network element is, for example, a unified data management function (UDM).

[0166] In some embodiments, the fifth network element is used to implement user subscription data management, roaming control, etc., but is not limited thereto.

[0167] In some embodiments, the core network device may include a sixth network element, which is, for example, an authentication service function (AUSF).

[0168] In some embodiments, the sixth network element is used to implement user identity authentication, but is not limited thereto.

[0169] In some embodiments, each of the above network elements may be independent of the core network device.

[0170] In some embodiments, each of the above network elements may be part of a core network device.

[0171] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0172] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0173] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0174] In some embodiments, Ambient IoT devices in a passive IoT system can be divided into three types: Device A, Device B, and Device C. Device A lacks energy storage, independent signal generation, and signal amplification, relying on backscattering technology for data transmission. Device B has energy storage but lacks independent signal generation, relying on backscattering technology for data transmission. The stored energy can be used to amplify reflected signals. Device C has energy storage and independent signal generation, meaning it has an active radio frequency (RF) component for transmission and can achieve data transmission through active transmission.

[0175] In some embodiments, the passive IoT design needs to support non-activate devices (i.e., Device A and Device B). Non-activate devices do not have RF transmission capabilities and need to obtain transmission energy through backscattering.

[0176] Furthermore, in some embodiments, passive IoT devices also need to support basic use cases such as tag inventory.

[0177] In some embodiments, the tag inventory process can be performed by relying on a select command set, an inventory command set, an access command set, etc.

[0178] In some embodiments, during multiple rounds of inventory, Ambient IoT devices need to access the network only at the beginning of a round of inventory. If a new Ambient IoT device enters the network coverage during a round of inventory, it will not be able to access the network during this round of inventory and must wait until the next round of inventory begins to access the network, which greatly increases service latency.

[0179] In view of this, the embodiments of the present disclosure propose a communication method, device, and storage medium to ensure that Ambient IoT devices that have newly entered the network coverage area can establish a connection with the network side more quickly, thereby initiating subsequent uplink and downlink data interaction processes more quickly, while at the same time, minimizing the increase in collision probability.

[0180] FIG2 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0181] Step S2101: A first communication device sends a first signaling to an Ambient IoT device.

[0182] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0183] In some embodiments, the first signaling is used for random access of the Ambient IoT device.

[0184] In some embodiments, the first signaling may be a signaling similar to a query response (QueryRep) signaling in RFID. For example, the first signaling may be an access opportunity indication (Access Occasion Indication) signaling, but is not limited thereto.

[0185] In some embodiments, the name of the first signaling is not limited, and it can be, for example, "first random access signaling", "random access opportunity indication signaling", etc.

[0186] In some embodiments, the first signaling includes first indication information, and the first indication information is used to indicate a first parameter value.

[0187] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0188] In some embodiments, the first parameter value is used by the Ambient IoT device to determine a timing for performing random access.

[0189] In some embodiments, terms such as "opportunity", "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0190] In some embodiments, the first parameter value may be a parameter value similar to the Q value in QueryRep signaling.

[0191] In some embodiments, the name of the first parameter value is not limited, and it can be, for example, a "first random access timing determination parameter" or the like.

[0192] In some embodiments, the first parameter value is the same as the second parameter value indicated by the second signaling, that is, the second parameter value indicated by the second signaling can be used as the first parameter value.

[0193] In some embodiments, the second signaling is used to indicate the start and end of the current round of inventory counting. For example, sending the second signaling for the Nth time may indicate the start of the Nth occasion, and sending the second signaling for the N+1th time may indicate the end of the Nth occasion and the start of the N+1th occasion.

[0194] In some embodiments, the second signaling may be a signaling similar to a query signaling in RFID. For example, the second signaling may be an access round indication signaling, but is not limited thereto.

[0195] In some embodiments, the name of the second signaling is not limited, and it can be, for example, "second random access signaling", "random access round indication signaling", etc.

[0196] In some embodiments, the second signaling includes corresponding indication information for indicating the second parameter value.

[0197] In some embodiments, the second parameter value is used by the Ambient IoT device to determine a timing for performing random access.

[0198] In some embodiments, the name of the second parameter value is not limited, and it can be, for example, "second random access timing determination parameter" or the like.

[0199] In some embodiments, the Ambient IoT device receives first signaling sent by the first communication device, where the first signaling includes first indication information for indicating a first parameter value.

[0200] In some embodiments, "receive", "obtain", "obtain", "get", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0201] In step S2102 , the Ambient IoT device generates a first random number based on the first signaling.

[0202] In some embodiments, the Ambient IoT device generates a first random number based on a first parameter value indicated by first indication information included in the first information.

[0203] Optionally, the Ambient IoT device may generate the first random number in different ways depending on whether a random access window of this round of inventory counting is extended.

[0204] In some embodiments, whether the Ambient IoT device extends the random access window of the current inventory round may be determined according to an instruction of the first communication device, or may be determined based on the Ambient IoT device's own implementation.

[0205] In some embodiments, the Ambient IoT device is determined based on the indication of the first communication device whether to extend the random access window of this round of inventory. The first communication device can send a second indication message to the Ambient IoT device, and the second indication message is used to indicate whether to extend the random access window of this round of inventory. The Ambient IoT device can receive the second indication message sent by the first communication device, and thereby determine whether to extend the random access window of this round of inventory based on the second indication message.

[0206] In some embodiments, the Ambient IoT device does not extend the random access window of this round of inventory, and the first signaling may further include relevant indication information for indicating the third parameter value, or the first indication information may also be used to indicate the third parameter value.

[0207] In some embodiments, the third parameter value is used to indicate the time slot index (index) to which the current round of inventory counting is currently progressing.

[0208] It should be noted that the random access window for this round of inventory is not extended, possibly because the inventory process has reached the middle or second half of the entire window. In this case, the third parameter value can be indicated in the first signaling so that the Ambient IoT device can know the time slot index currently reached in this round of inventory based on the third parameter value.

[0209] In some embodiments, the name of the third parameter value is not limited, and it can be, for example, "current opportunity indication parameter" or the like.

[0210] In some embodiments, the third parameter value is a value within a specific range of values, and the specific range of values ​​can be determined based on the first parameter value. For example, the third parameter value can be a value within a range of 0 to 2 Q -1, Q is the first parameter value.

[0211] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0212] In some embodiments, the random access window of the current inventory round is not extended, and the Ambient IoT device may generate a first random number based on the first parameter value and the third parameter value.

[0213] In some embodiments, the random access window of this round of inventory is not extended. The Ambient IoT device can determine the fifth parameter value based on the first parameter value, thereby generating multiple random numbers within the first interval determined based on the fifth parameter value, and determine the random number in the second interval among the generated multiple random numbers as the first random number.

[0214] In some embodiments, the Ambient IoT device may determine a fifth parameter value based on the first parameter value and the fourth interval. The fourth interval includes the fifth parameter value, and the Ambient IoT device may determine the fifth parameter value included in the fourth interval based on the first parameter value, thereby determining the fifth parameter value based on the first parameter value and the fourth interval.

[0215] In some embodiments, the first interval is determined based on the fifth parameter value. For example, the first interval may be [0,2 N+1 -1], N is the fifth parameter value.

[0216] In some embodiments, the second interval is determined based on the first parameter value and the third parameter value. For example, the second interval can be [0,2 Q -1-M], Q is the first parameter value, and M is the third parameter value.

[0217] In some embodiments, the fourth interval is determined based on the fifth parameter value. For example, the fourth interval may be (2 N -1,2 N+1 -1], N is the fifth parameter value.

[0218] That is, the Ambient IoT device is based on the value of the third parameter value M in the second interval [0,2 Q-1-M] to determine the value of the fifth parameter N, so that in the first interval [0,2 N+1 -1] repeatedly generate random numbers until the generated random numbers are in the second interval [0,2 Q -1-M], then take the random number as the first random number.

[0219] In some embodiments, the Ambient IoT device extends the random access window of this round of inventory, and the first signaling may also include relevant indication information for indicating the third parameter value and relevant indication information for indicating the fourth parameter value, or the first indication information may also be used to indicate the third parameter value and the fourth parameter value.

[0220] In some embodiments, the third parameter value is used to indicate the time slot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

[0221] In some embodiments, the name of the fourth parameter value is not limited, and it can be, for example, "extension opportunity quantity indication parameter" or the like.

[0222] In some embodiments, the current window may include 2 Q Based on the occurrence, the length of K occurrences is extended. These K occurrences are in occurrence #2. Q-1 Start from , where Q is the first parameter value and K is the fourth parameter value.

[0223] In some embodiments, the random access window of this round of inventory is extended, and the Ambient IoT device can generate a first random number based on the first parameter value, the third parameter value, and the fourth parameter value.

[0224] In some embodiments, the random access window of this round of inventory is expanded, and the Ambient IoT device can determine the fifth parameter value based on the first parameter value, thereby generating multiple random numbers within the first interval determined based on the fifth parameter value, and determining the random number in the third interval among the generated multiple random numbers as the first random number.

[0225] In some embodiments, the Ambient IoT device may determine a fifth parameter value based on the first parameter value and the fourth interval. The fourth interval includes the fifth parameter value, and the Ambient IoT device may determine the fifth parameter value included in the fourth interval based on the first parameter value, thereby determining the fifth parameter value based on the first parameter value and the fourth interval.

[0226] In some embodiments, the first interval is determined based on the fifth parameter value. For example, the first interval may be [0,2N+1 -1], N is the fifth parameter value.

[0227] In some embodiments, the third interval is determined based on the first parameter value, the third parameter value, and the fourth parameter value. For example, the second interval can be [0,2 Q -1-M+K], Q is the first parameter value, M is the third parameter value, and K is the fourth parameter value.

[0228] In some embodiments, the fourth interval is determined based on the fifth parameter value. For example, the fourth interval may be (2 N -1,2 N+1 -1], N is the fifth parameter value.

[0229] That is, the Ambient IoT device is based on the value of the third parameter value M in the second interval [0,2 Q -1-M] to determine the value of the fifth parameter N, so that in the first interval [0,2 N+1 -1] repeatedly generate random numbers until the generated random number is in the third interval [0,2 Q -1-M+K], then take the random number as the first random number.

[0230] In some embodiments, when the random access window of the current inventory round is extended, the Ambient IoT device may preferentially select the extended random access opportunity as the opportunity for random access.

[0231] The above embodiment mainly introduces the process of generating a first random number based on a first parameter value. It should be noted that the above process of generating a first random number based on the first parameter value can be performed when the Ambient IoT device receives the first signaling for the first time. That is, the Ambient IoT device can, when receiving the first signaling for the first time, generate a first random number based on the first parameter value indicated by the first indication information included in the first signaling through the above process.

[0232] In some embodiments, if the Ambient IoT device has received the first signaling corresponding to the current round of inventory, the first indication information included in the currently received first signaling is ignored.

[0233] That is, if the Ambient IoT device has received the first signaling corresponding to the current inventory round, the currently received first signaling and the various parameter values ​​indicated by the first indication information in the first signaling are ignored.

[0234] In some embodiments, after determining the timing of random access based on the first parameter value indicated by the first indication information in the received first signaling, if the first signaling is received again, the first indication information included in the first signaling received again is ignored.

[0235] That is, if the Ambient IoT device has received the first signaling once and selected the corresponding random access opportunity according to the instruction of the first signaling, it ignores the subsequently received first signaling and the various parameter values ​​indicated by the first indication information in the first signaling.

[0236] Step S2103: The first communication device repeatedly sends the first signaling to the Ambient IoT device.

[0237] In some embodiments, the first communication device may continue to repeatedly send the first signaling to the Ambient IoT device after sending the first signaling to the Ambient IoT device once.

[0238] Among them, the repeatedly sent first signaling may still include the first indication information. For an introduction to the first indication information and various parameter values ​​that may be included in the first indication information, please refer to step S2102, which will not be repeated here.

[0239] In some embodiments, the Ambient IoT device may receive the first signaling repeatedly sent by the first communication device.

[0240] Step S2104: The Ambient IoT device reduces the first random number by a first value each time it receives the first signaling.

[0241] In some embodiments, the Ambient IoT device may use a first random number as an initial value of a counter, and each time the Ambient IoT device receives the first signaling, the Ambient IoT device may reduce the counter value by the first value.

[0242] In some embodiments, the first value may be 1. That is, each time the first signaling is received, the Ambient IoT device may reduce the counter value by 1.

[0243] In step S2105 , the Ambient IoT device determines the timing when the first random number is reduced to the second value as the timing for performing random access.

[0244] In some embodiments, the Ambient IoT device may determine the timing when the counter value decreases to the second value as the timing for performing random access.

[0245] In some embodiments, the second value may be 0. That is, the Ambient IoT device may determine the timing when the counter value is reduced to 0 as the timing for performing random access.

[0246] Step S2106: The Ambient IoT device reports identity authentication information to the first communication device when performing random access.

[0247] In some embodiments, the name of the identity authentication information is not limited, and it can be, for example, "device access information", "identification information", etc.

[0248] In some embodiments, the first communication device may receive identity authentication information reported by the Ambient IoT device when performing random access.

[0249] In some embodiments, the Ambient IoT device may report the second random number to the first communication device when performing random access.

[0250] In some embodiments, the first communication device receives a second random number reported by the Ambient IoT device when performing random access.

[0251] In some embodiments, the second random number is used by the first communication device to authenticate the Ambient IoT device.

[0252] In some embodiments, the second random number may be a 16-bit random number (Random Number 16 bits, RN16), but is not limited thereto.

[0253] Step S2107: The first communication device authenticates the Ambient IoT device based on the authentication information.

[0254] In some embodiments, the first communication device can authenticate the Ambient IoT device based on the authentication information, and establish a communication connection with the Ambient IoT device if the authentication of the Ambient IoT device is passed, so as to continue the subsequent uplink and downlink data interaction process with the Ambient IoT device.

[0255] In some embodiments, terms such as "DL data" and "physical downlink shared channel (PDSCH)" can be used interchangeably, and terms such as "UL data" and "physical uplink shared channel (PUSCH)" can be used interchangeably.

[0256] In some embodiments, the second random number may be used as the identity authentication information, that is, the first communication device may authenticate the Ambient IoT device based on the second random number.

[0257] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0258] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0259] The communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2107. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, steps S2101+S2102 can be implemented as an independent embodiment, steps S2101+S2102+S2103 can be implemented as an independent embodiment, steps S2101+S2102+S2103+S2104 can be implemented as an independent embodiment, steps S2101+S2102+S2103+S2104+S2105 can be implemented as an independent embodiment, steps S2101+S2102+S2103+S2104+S2105+S2106 can be implemented as an independent embodiment, steps S2101+S2103 can be implemented as an independent embodiment, and steps S2101+S2103+S2104 can be implemented as an independent embodiment. As independent embodiments, steps S2101+S2103+S2104+S2105 can be implemented as independent embodiments, steps S2101+S2103+S2104+S2105+S2106 can be implemented as independent embodiments, steps S2102+S2103 can be implemented as independent embodiments, steps S2102+S2104 can be implemented as independent embodiments, steps S2102+S2104+S2105 can be implemented as independent embodiments, steps S2102+S2104+S2105+S2106 can be implemented as independent embodiments, steps S2101+S2106 can be implemented as independent embodiments, and steps S2101+S2106+S107 can be implemented as independent embodiments, but are not limited thereto.

[0260] In some embodiments, steps S2102 and S2103 may be executed in an interchanged order or simultaneously.

[0261] In some embodiments, steps S2102, S2103, S2104, S2105, S2106, and S2107 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0262] In some embodiments, steps S2101, S2103, S2104, S2105, S2106, and S2107 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0263] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0264] FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a communication method, which includes:

[0265] Step S3101: Obtain first signaling.

[0266] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0267] In some embodiments, the Ambient IoT device receives the first signaling sent by the first communication device, but is not limited thereto and may also receive the first signaling sent by other entities.

[0268] In some embodiments, the Ambient IoT device obtains first signaling specified by the protocol.

[0269] In some embodiments, the Ambient IoT device obtains the first signaling from an upper layer(s).

[0270] In some embodiments, the Ambient IoT device performs processing to obtain the first signaling.

[0271] In some embodiments, step S3101 is omitted, and the Ambient IoT device autonomously implements the function indicated by the first signaling, or the above function is default or by default.

[0272] In some embodiments, the first signaling is used for random access of the Ambient IoT device.

[0273] In some embodiments, the first signaling includes first indication information, and the first indication information is used to indicate a first parameter value.

[0274] In some embodiments, the first parameter value is used by the Ambient IoT device to determine a timing for performing random access.

[0275] In some embodiments, the first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing of random access.

[0276] Step S3102: Generate a first random number based on the first signaling.

[0277] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0278] In some embodiments, the Ambient IoT device obtains second indication information, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory.

[0279] In some embodiments, the Ambient IoT device receives the second indication information sent by the first communication device, but is not limited thereto and may also receive the second indication information sent by other entities.

[0280] In some embodiments, the random access window of the current inventory round is not extended, and the Ambient IoT device generates a first random number based on the first parameter value and the third parameter value.

[0281] In some embodiments, the third parameter value is used to indicate the time slot index to which the current round of inventory counting is currently proceeding.

[0282] In some embodiments, the random access window of this round of inventory is not extended, and the Ambient IoT device determines the fifth parameter value based on the first parameter value; generates multiple random numbers within a first interval determined based on the fifth parameter value, and determines the random number within the second interval among the multiple random numbers generated as the first random number, and the second interval is determined based on the first parameter value and the third parameter value.

[0283] In some embodiments, the Ambient IoT device determines a fifth parameter value based on the first parameter value and the fourth interval.

[0284] In some embodiments, the first interval is [0,2 N+1 -1], and the second interval is [0,2 Q -1-M], the fourth interval is (2 N-1,2 N+1 -1]; wherein Q is the first parameter value, M is the third parameter value, and N is the fifth parameter value.

[0285] In some embodiments, the random access window of this round of inventory is extended, and the Ambient IoT device generates a first random number based on the first parameter value, the third parameter value, and the fourth parameter value.

[0286] In some embodiments, the third parameter value is used to indicate the time slot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

[0287] In some embodiments, the random access window of this round of inventory is extended, and the Ambient IoT device determines a fifth parameter value based on the first parameter value; generates multiple random numbers within a first interval determined based on the fifth parameter value, and determines the random number within a third interval among the multiple random numbers generated as a first random number, and the third interval is determined based on the first parameter value, the third parameter value, and the fourth parameter value.

[0288] In some embodiments, the Ambient IoT device determines a fifth parameter value based on the first parameter value and the fourth interval.

[0289] In some embodiments, the first interval is [0,2 N+1 -1], and the second interval is [0,2 Q -1-M], the third interval is [0,2 Q -1-M+K], the fourth interval is (2 N -1,2 N+1 -1]; wherein Q is the first parameter value, M is the third parameter value, K is the fourth parameter value, and N is the fifth parameter value.

[0290] In some embodiments, the random access window of the current inventory is extended, and the Ambient IoT device preferentially selects the extended random access opportunity as the opportunity for random access.

[0291] In some embodiments, if the Ambient IoT device has received the first signaling corresponding to the current round of inventory, the Ambient IoT device ignores the first indication information included in the currently received first signaling.

[0292] In some embodiments, after determining the timing of random access based on the first parameter value indicated by the first indication information in the received first signaling, the Ambient IoT device receives the first signaling again, and the Ambient IoT device ignores the first indication information included in the first signaling received again.

[0293] Step S3103: repeatedly obtain the first signaling.

[0294] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0295] In some embodiments, the Ambient IoT device receives the first signaling repeatedly sent by the first communication device, but is not limited thereto and may also receive the first signaling repeatedly sent by other entities.

[0296] In some embodiments, the Ambient IoT device obtains the first signaling that is repeatedly sent as specified by the protocol.

[0297] In some embodiments, the Ambient IoT device obtains the repeatedly sent first signaling from the upper layer(s).

[0298] In some embodiments, the Ambient IoT device performs processing to obtain the repeatedly sent first signaling.

[0299] In some embodiments, step S3101 is omitted, and the Ambient IoT device autonomously implements the function indicated by the repeatedly sent first signaling, or the above function is default or by default.

[0300] Step S3104: Each time the first signaling is received, the first random number is reduced by a first value.

[0301] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0302] In some embodiments, the first value is 1. That is, each time the first signaling is received, the Ambient IoT device subtracts 1 from the first random number.

[0303] Step S3105: Determine the timing when the first random number is reduced to the second value as the timing for performing random access.

[0304] The optional implementation of step S3105 can refer to the optional implementation of step S2105 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0305] In some embodiments, the second value is 0. That is, the Ambient IoT device determines the timing when the first random number is reduced to 0 as the timing for performing random access.

[0306] Step S3106: Report identity authentication information when performing random access.

[0307] In some embodiments, the Ambient IoT device reports the identity authentication information to the first communication device when performing random access, but is not limited thereto and the identity authentication information may also be reported to other entities.

[0308] In some embodiments, the authentication information is used by the first communication device to authenticate the Ambient IoT device.

[0309] In some embodiments, the Ambient IoT device reports a second random number to the first communication device when performing random access, and the second random number is used by the first communication device to authenticate the Ambient IoT device.

[0310] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3106. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, steps S3101+S3102+S3103 can be implemented as an independent embodiment, steps S3101+S3102+S3103+S3104 can be implemented as an independent embodiment, steps S3101+S3102+S3103+S3104+S3105 can be implemented as an independent embodiment, steps S3101+S3102+S3103+S3104+S3105+S3106 can be implemented as an independent embodiment, and steps S3101+S3103+S3104+S3105+S3106 can be implemented as an independent embodiment. 101+S3103+S3104 can be implemented as an independent embodiment, steps S3101+S3103+S3104+S3105 can be implemented as an independent embodiment, steps S3101+S3103+S3104+S3105+S3106 can be implemented as an independent embodiment, step S3102+S3103 can be implemented as an independent embodiment, step S3102+S3104 can be implemented as an independent embodiment, step S3102+S3104+S3105 can be implemented as an independent embodiment, step S3102+S3104+S3105 can be implemented as an independent embodiment, step S3102+S3104+S3105+S3106 can be implemented as an independent embodiment, and step S3101+S3106 can be implemented as an independent embodiment, but is not limited to this.

[0311] In some embodiments, steps S3102 and S3103 may be executed in an interchanged order or simultaneously.

[0312] In some embodiments, steps S3102, S3103, S3104, S3105, and S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0313] In some embodiments, steps S3101, S3103, S3104, S3105, and S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0314] FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0315] Step S3201: Send the first signaling.

[0316] The optional implementation of step S3201 can refer to the optional implementation of steps S2101 and S2102 in Figure 2, steps S3101 and S3102 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0317] In some embodiments, the first communication device sends the first signaling to the Ambient IoT device, but is not limited thereto and may also send the first signaling to other entities.

[0318] In some embodiments, the first signaling is used for random access of the Ambient IoT device.

[0319] In some embodiments, the first signaling includes first indication information, and the first indication information is used to indicate a first parameter value.

[0320] In some embodiments, the first parameter value is used by the Ambient IoT device to determine a timing for performing random access.

[0321] In some embodiments, the first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing of random access.

[0322] In some embodiments, the first parameter value is used by the Ambient IoT device to generate a first random number, and the first random number is used by the Ambient IoT device to determine a timing for performing random access.

[0323] In some embodiments, the first communication device sends second indication information to the Ambient IoT device, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory.

[0324] In some embodiments, the Ambient IoT device does not expand the random access window of the current inventory round, and the first random number is generated based on the first parameter value and the third parameter value.

[0325] In some embodiments, the Ambient IoT device expands the random access window of the current inventory round, and the first random number is generated based on the first parameter value, the third parameter value, and the fourth parameter value.

[0326] The third parameter value is used to indicate the timeslot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

[0327] Step S3202: Repeat sending the first signaling.

[0328] The optional implementation of step S3202 can be found in steps S2103, S2104, S2105 of Figure 2, the optional implementation of steps S3103, S3104, S3105 of Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0329] In some embodiments, the first communication device repeatedly sends the first signaling to the Ambient IoT device, but is not limited thereto, and the first signaling may also be repeatedly sent to other entities.

[0330] In some embodiments, the repeatedly sent first signaling is used for the Ambient IoT device to reduce the first random number by a first value each time it receives the first signaling, thereby determining the timing when the first random number is reduced to a second value as the timing for random access.

[0331] Step S3203: Obtain authentication information of the Ambient IoT device.

[0332] Optional implementations of step S3203 may refer to step S2106 in FIG. 2 , optional implementations of step S3106 in FIG. 3A , and other related parts in the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

[0333] In some embodiments, the first communication device receives the identity authentication information reported by the Ambient IoT device when performing random access, but is not limited thereto and may also receive the identity authentication information reported by other entities when performing random access.

[0334] In some embodiments, the first communications device obtains authentication information specified by a protocol.

[0335] In some embodiments, the first communications device obtains authentication information from upper layer(s).

[0336] In some embodiments, the first communication device performs processing to obtain the identity verification information.

[0337] In some embodiments, step S3203 is omitted, and the Ambient IoT device autonomously implements the function indicated by the authentication information, or the above function is default or by default.

[0338] In some embodiments, the first communication device receives a second random number reported by the Ambient IoT device when performing random access, and the second random number is used by the first communication device to authenticate the Ambient IoT device.

[0339] Step S3204: Authenticate the Ambient IoT device based on the authentication information.

[0340] The optional implementation of step S3204 can refer to the optional implementation of step S2107 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0341] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3204. For example, step S32011 can be implemented as an independent embodiment, steps S3201+S3202 can be implemented as an independent embodiment, steps S3201+S3203 can be implemented as an independent embodiment, steps S3201+S3204 can be implemented as an independent embodiment, steps S3201+S3202+S3203 can be implemented as an independent embodiment, steps S3201+S3202+S3204 can be implemented as an independent embodiment, and steps S3201+S3203+S3204 can be implemented as an independent embodiment, but are not limited thereto.

[0342] In some embodiments, steps S3202 and S3203 may be executed in an interchanged order or simultaneously.

[0343] In some embodiments, steps S3202, S3203, and S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0344] In the embodiment of the present disclosure, step S3201 may be combined with step S3101 of FIG. 3A , step S3202 may be combined with step S3103 of FIG. 3A , and step S3203 may be combined with step S3106 of FIG. 3A .

[0345] FIG3C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a communication method, which includes:

[0346] Step S3301: Obtain first signaling.

[0347] Optional implementations of step S3301 may refer to step S2101 in FIG. 2 , step S3101 in FIG. 3A , step S3201 in FIG. 3B , and other related parts in the embodiments involved in FIG. 2 , FIG. 3A , and FIG. 3B , which will not be described in detail here.

[0348] In some embodiments, the Ambient IoT device receives first signaling sent by the first communication device.

[0349] In some embodiments, the first signaling is used for random access of the Ambient IoT device, and the first signaling includes first indication information, where the first indication information is used to indicate a first parameter value.

[0350] In some embodiments, the first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing of random access.

[0351] Step S3302: Determine a timing for performing random access based on the first signaling.

[0352] In an optional embodiment, step S3302 includes the lower scheme (or median scheme) step S3102, step S3103, step S3104, and step S3105. The optional implementation method of step S3302 can be found in steps S2102, step S2103, step S2104, step S2105 of Figure 2, steps S3102, step S3103, step S3104, step S3105 of Figure 3A, step S3202 of Figure 3B, and other related parts in the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0353] In some embodiments, the Ambient IoT device generates a first random number based on a first parameter value; and determines a timing for performing random access based on the first random number.

[0354] In some embodiments, the Ambient IoT device does not expand the random access window of this round of inventory counting, and generates a first random number based on the first parameter value and the third parameter value; wherein the third parameter value is used to indicate the time slot index currently reached in this round of inventory counting.

[0355] In some embodiments, the Ambient IoT device determines a fifth parameter value based on the first parameter value; generates multiple random numbers within a first interval determined based on the fifth parameter value, and determines the random number within the second interval among the generated multiple random numbers as the first random number, where the second interval is determined based on the first parameter value and the third parameter value.

[0356] In some embodiments, the Ambient IoT device determines a fifth parameter value based on the first parameter value and the fourth interval.

[0357] In some embodiments, the first interval is [0,2 N+1 -1], and the second interval is [0,2 Q -1-M], the fourth interval is (2 N -1,2 N+1 -1]; wherein Q is the first parameter value, M is the third parameter value, and N is the fifth parameter value.

[0358] In some embodiments, the Ambient IoT device extends the random access window of this round of inventory, and the Ambient IoT device generates the first random number based on the first parameter value, the third parameter value and the fourth parameter value; wherein the third parameter value is used to indicate the time slot index currently reached in this round of inventory, and the fourth parameter value is used to indicate the number of extended random access opportunities.

[0359] In some embodiments, the Ambient IoT device determines a fifth parameter value based on the first parameter value; generates multiple random numbers within a first interval determined based on the fifth parameter value, and determines the random number within a third interval among the generated multiple random numbers as a first random number, where the third interval is determined based on the first parameter value, the third parameter value, and the fourth parameter value.

[0360] In some embodiments, the Ambient IoT device determines a fifth parameter value based on the first parameter value and the fourth interval.

[0361] In some embodiments, the first interval is [0,2 N+1 -1], and the second interval is [0,2 Q -1-M], the third interval is [0,2 Q -1-M+K], the fourth interval is (2 N -1,2 N+1 -1]; wherein Q is the first parameter value, M is the third parameter value, K is the fourth parameter value, and N is the fifth parameter value.

[0362] In some embodiments, the Ambient IoT device receives second indication information sent by the first communication device, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory.

[0363] In some embodiments, the Ambient IoT device extends the random access window of the current inventory round, and the Ambient IoT device preferentially selects the extended random access opportunity as the opportunity for random access.

[0364] In some embodiments, the Ambient IoT device receives the first signaling repeatedly sent by the first communication device; each time the first signaling is received, the first random number is reduced by a first value; and the timing when the first random number is reduced to a second value is determined as the timing for random access.

[0365] In some embodiments, if the Ambient IoT device has received the first signaling corresponding to the current round of inventory, the Ambient IoT device ignores the first indication information included in the currently received first signaling.

[0366] In some embodiments, after determining the timing of random access based on the first parameter value indicated by the first indication information in the received first signaling, the Ambient IoT device receives the first signaling again, and the Ambient IoT device ignores the first indication information included in the first signaling received again.

[0367] Step S3303: Report identity authentication information when performing random access.

[0368] Optional implementations of step S3303 may refer to step S2106 in FIG. 2 , step S3106 in FIG. 3A , step S3203 in FIG. 3B , and other related parts in the embodiments involved in FIG. 2 , FIG. 3A , and FIG. 3B , which will not be described in detail here.

[0369] In some embodiments, the Ambient IoT device reports a second random number to the first communication device when performing random access, and the second random number is used by the first communication device to authenticate the Ambient IoT device.

[0370] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3301 to S3303. For example, step S3301 may be implemented as an independent embodiment, step S3302 may be implemented as an independent embodiment, steps S3301+S3302 may be implemented as an independent embodiment, steps S3301+S3303 may be implemented as an independent embodiment, and steps S3302+S3303 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0371] In some embodiments, steps S3302 and S3303 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0372] In some embodiments, steps S3301 and S3303 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0373] FIG3D is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3C , an embodiment of the present disclosure relates to a communication method, the method comprising:

[0374] Step S3401: Send a first signaling.

[0375] Optional implementations of step S3401 may refer to step S2101 in FIG. 2 , step S3101 in FIG. 3A , step S3201 in FIG. 3B , and other related parts in the embodiments involved in FIG. 2 , FIG. 3A , and FIG. 3B , which will not be described in detail here.

[0376] In some embodiments, the first communication device sends a first signaling to the Ambient IoT device.

[0377] In some embodiments, the first signaling is used for random access of the Ambient IoT device, and the first signaling includes first indication information, where the first indication information is used to indicate a first parameter value.

[0378] In some embodiments, the first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing of random access.

[0379] In some embodiments, the first parameter value is used by the Ambient IoT device to generate a first random number, and the first random number is used by the Ambient IoT device to determine a timing for performing random access.

[0380] In some embodiments, the Ambient IoT device does not expand the random access window of the current inventory round, and the first random number is generated based on the first parameter value and the third parameter value.

[0381] In some embodiments, the Ambient IoT device expands the random access window of the current inventory round, and the first random number is generated based on the first parameter value, the third parameter value, and the fourth parameter value.

[0382] The third parameter value is used to indicate the timeslot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

[0383] In some embodiments, the first communication device sends second indication information to the Ambient IoT device, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory.

[0384] In some embodiments, the first communication device may further repeatedly send the first signaling to the Ambient IoT device.

[0385] In some embodiments, the repeatedly sent first signaling is used for the Ambient IoT device to reduce the first random number by a first value each time it receives the first signaling, thereby determining the timing when the first random number is reduced to a second value as the timing for random access.

[0386] Step S3402: Obtain authentication information of the Ambient IoT device.

[0387] The optional implementation of step S3402 can be found in step S2106 of Figure 2, step S3106 of Figure 3A, step S3203 of Figure 3B, step S3303 of Figure 3C, and other related parts in the embodiments involved in Figures 2, 3A, 3B, and 3C, which will not be repeated here.

[0388] In some embodiments, the first communication device receives a second random number reported by the Ambient IoT device when performing random access, and the second random number is used by the first communication device to authenticate the Ambient IoT device.

[0389] Step S3403: Authenticate the Ambient IoT device based on the authentication information.

[0390] Optional implementations of step S3403 may refer to step S2107 of FIG. 2 , step S3204 of FIG. 3B , and other related parts of the embodiments involved in FIG. 2 and FIG. 3B , which will not be described in detail here.

[0391] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3401 to S3403. For example, step S3401 may be implemented as an independent embodiment, steps S3401+S3402 may be implemented as independent embodiments, and steps S3401+S3403 may be implemented as independent embodiments, but are not limited thereto.

[0392] In some embodiments, steps S3401 and S3402 may be executed in an interchanged order or simultaneously.

[0393] In some embodiments, steps S3402 and S3403 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0394] In the embodiment of the present disclosure, step S3401 may be combined with step S3301 of FIG. 3C , and step S3402 may be combined with step S3303 of FIG. 3C .

[0395] According to the solution provided by the embodiment of the present disclosure, first indication information for indicating the first parameter value may be added to the first signaling (such as Access Occasion Indication signaling).

[0396] In some embodiments, a first communication device (such as a base station or a UE used as a reader) may send a first signaling to the Ambient IoT device, and add first indication information for indicating a first parameter value to the first signaling.

[0397] In some embodiments, the Ambient IoT device may generate a corresponding random number according to a first parameter value indicated by first indication information added to the first signaling sent by the first communication device.

[0398] In some embodiments, the first parameter value may be the same as the second parameter value indicated by the second signaling (such as Access Round Indication signaling).

[0399] Optionally, depending on whether the corresponding random access round is extended, the Ambient IoT device generates the corresponding random number in different ways according to the first parameter value. The processing procedures in these two cases are introduced below.

[0400] First, we will introduce the processing process when the corresponding random access round is not extended.

[0401] In some embodiments, the corresponding random access round is not extended because the entire inventory process may have already reached the middle or the second half of the entire round. In this case, it is necessary to indicate the current starting occasion index (recorded as the third parameter value M) in the first signaling (such as the Access Occasion Indication signaling), and its value is between 0 and 2. Q A value between -1.

[0402] In some embodiments, for a specific Ambient IoT device, if it has received the first signaling corresponding to the current inventory round, the first parameter value Q indicated in the current first signaling is ignored.

[0403] In some embodiments, for a specific Ambient IoT device, if it has not received the first signaling corresponding to this round of inventory, if this is the first time the first signaling is received, the Ambient IoT device generates a corresponding random number based on the third parameter value M and the first parameter value Q in the first signaling.

[0404] In some embodiments, that is, if the third parameter value M is (2 N -1,2 N+1 -1], the corresponding Q -1-M] is set as the initial value of the counter. Each time the first signaling is received, the counter value is reduced by 1. When the counter value is reduced to 0, the random number used for identity authentication (such as a random number similar to RN16) is reported at the corresponding occasion.

[0405] In some embodiments, the corresponding random number can be generated by N+1 -1], and generate multiple random numbers until the generated random number is in [0, 2 Q -1-M], then take the random number as the random number corresponding to the Ambient IoT device that is subsequently added to the network coverage.

[0406] In some embodiments, after receiving the first signaling once and selecting the corresponding occasion based on the indication of the first signaling, the Ambient IoT device may ignore the first parameter value indicated in the subsequently received first signaling.

[0407] The following describes the process of extending the corresponding random access round.

[0408] In some embodiments, the corresponding random access round is extended, and the first communication device may indicate that the current round is 2 Q Based on the occasion, the length of K occasions is extended. These K Ext occasions are in occasion#2 Q-1 Starting later, the fourth parameter value K may be indicated by the first signaling.

[0409] In some embodiments, for a specific Ambient IoT device, if it has received the first signaling corresponding to this round of inventory, it ignores the first parameter value indicated in the current first signaling and ignores the fourth parameter value K indicated in the first signaling.

[0410] In some embodiments, for a specific Ambient IoT device, if it has not received the first signaling corresponding to this round of inventory, if this is the first time the first signaling is received, the Ambient IoT device generates a corresponding random number based on the third parameter value M, the first parameter value Q, and the fourth parameter value K in the first signaling.

[0411] In some embodiments, that is, if the third parameter value M is (2 N -1,2 N+1 -1], the corresponding Q -1-M+K] is set as the initial value of the counter. Each time the first signaling is received, the counter value is reduced by 1. When the counter value is reduced to 0, the random number used for identity authentication (such as a random number similar to RN16) is reported at the corresponding occasion.

[0412] In some embodiments, the corresponding random number can be generated by N+1 -1], and generate multiple random numbers until the generated random number is in [0, 2 Q -1-M+K], then take this random number as the random number corresponding to the Ambient IoT device that is subsequently added to the network coverage.

[0413] In some embodiments, the Ambient IoT device preferentially selects Ext occasion to report a random number for identity authentication.

[0414] In some embodiments, after receiving the first signaling once and selecting the corresponding occasion based on the indication of the first signaling, the Ambient IoT device may ignore the first parameter value indicated in the subsequently received first signaling.

[0415] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0416] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing each step performed by an Ambient IoT device in any of the above methods. For another example, another apparatus is provided that includes units or modules for implementing each step performed by a first communication device (e.g., an access network device, a UE used as a reader / writer, etc.) in any of the above methods.

[0417] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0418] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0419] Figure 4A is a structural diagram of the Ambient IoT device proposed in an embodiment of the present disclosure. As shown in Figure 4A, the Ambient IoT device 4100 may include: at least one of a transceiver module 4101, a processing module 4102, etc. In some embodiments, the above-mentioned transceiver module 4101 is configured to receive a first signaling sent by a first communication device, and the first signaling is used for the Ambient IoT device to perform random access, and the first signaling includes a first indication information, and the first indication information is used to indicate a first parameter value; the above-mentioned processing module 4102 is configured to determine the timing of random access based on the first parameter value. Optionally, the above-mentioned transceiver module 4101 is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2101, step S2103, step S2106, but not limited to this) performed by the Ambient IoT device in any of the above methods, which will not be repeated here. Optionally, the processing module 4102 is used to execute at least one of the other steps (such as step S2102, step S2104, step S2105, but not limited thereto) performed by the Ambient IoT device in any of the above methods, which will not be repeated here.

[0420] Figure 4B is a schematic diagram of the structure of the first communication device proposed in an embodiment of the present disclosure. As shown in Figure 4B, the first communication device 4200 may include at least: a transceiver module 4201. In some embodiments, the transceiver module 4201 is configured to send a first signaling to the Ambient IoT device, the first signaling being used for the Ambient IoT device to perform random access, the first signaling including first indication information, the first indication information being used to indicate a first parameter value, the first parameter value being used for the Ambient IoT device to determine the timing for performing random access. Optionally, the transceiver module 4201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the first communication device in any of the above methods (for example, step S2101, step S2103, step S2106, but not limited thereto), which will not be repeated here. In some embodiments, the first communication device may further include a processing module, and optionally, the processing module is used to perform at least one of the other steps (for example, step S2107, but not limited thereto) performed by the first communication device in any of the above methods.

[0421] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0422] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0423] Figure 5A is a schematic diagram of the structure of a communication device 5100 proposed in an embodiment of the present disclosure. The communication device 5100 can be a first communication device (e.g., an access network device, a UE used as a reader / writer, etc.), or an Ambient IoT device, or a chip, chip system, or processor that supports the first communication device to implement any of the above methods, or a chip, chip system, or processor that supports the Ambient IoT device to implement any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0424] As shown in Figure 5A, the communication device 5100 includes one or more processors 5101. The processor 5101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 5100 is used to perform any of the above methods.

[0425] In some embodiments, the communication device 5100 further includes one or more memories 5102 for storing instructions. Optionally, all or part of the memories 5102 may be located outside the communication device 5100.

[0426] In some embodiments, the communication device 5100 further includes one or more transceivers 5103. When the communication device 5100 includes one or more transceivers 5103, the transceiver 5103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2103, step S2106, but not limited thereto), and the processor 5101 performs at least one of the other steps (for example, step S2102, step S2104, step S2105, step S2107, but not limited thereto).

[0427] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0428] In some embodiments, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5102. The interface circuit 5104 may be configured to receive signals from the memory 5102 or other devices, and may be configured to send signals to the memory 5102 or other devices. For example, the interface circuit 5104 may read instructions stored in the memory 5102 and send the instructions to the processor 5101.

[0429] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in the present disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited to FIG. 5A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0430] 5B is a schematic diagram of the structure of a chip 5200 according to an embodiment of the present disclosure. If the communication device 5100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 5200 shown in FIG5B , but the present disclosure is not limited thereto.

[0431] The chip 5200 includes one or more processors 5201 , and the chip 5200 is configured to execute any of the above methods.

[0432] In some embodiments, the chip 5200 further includes one or more interface circuits 5202. Optionally, the interface circuit 5202 is connected to the memory 5203. The interface circuit 5202 can be used to receive signals from the memory 5203 or other devices, and can be used to send signals to the memory 5203 or other devices. For example, the interface circuit 5202 can read instructions stored in the memory 5203 and send the instructions to the processor 5201.

[0433] In some embodiments, the interface circuit 5202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2103, step S2106, but not limited to these), and the processor 5201 executes at least one of the other steps (for example, step S2102, step S2104, step S2105, step S2107, but not limited to these).

[0434] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0435] In some embodiments, the chip 5200 further includes one or more memories 5203 for storing instructions. Alternatively, all or part of the memories 5203 may be located outside the chip 5200.

[0436] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 5100, causes the communication device 5100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0437] The present disclosure also provides a program product, which, when executed by the communication device 5100, enables the communication device 5100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0438] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0439] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0440] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that: Applied to a passive Ambient IoT device, the method includes: receiving first signaling sent by a first communication device, where the first signaling is used for the Ambient IoT device to perform random access, the first signaling including first indication information, where the first indication information is used to indicate a first parameter value; A timing for performing random access is determined based on the first parameter value.

2. The method according to claim 1, characterized in that The first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing of random access.

3. The method according to claim 1 or 2, characterized in that The determining, based on the first parameter value, a timing for performing random access includes: generating a first random number based on the first parameter value; A timing for performing random access is determined based on the first random number.

4. The method according to claim 3, characterized in that Generating a first random number based on the first parameter value includes any one of the following: The Ambient IoT device does not extend the random access window of the current inventory round, and generates the first random number based on the first parameter value and the third parameter value; The Ambient IoT device extends the random access window of the current inventory round and generates the first random number based on the first parameter value, the third parameter value, and the fourth parameter value; The third parameter value is used to indicate the time slot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

5. The method according to claim 4, characterized in that Generating the first random number based on the first parameter value and the third parameter value includes: determining a fifth parameter value based on the first parameter value; A plurality of random numbers are generated within a first interval determined based on the fifth parameter value, and a random number within a second interval among the generated plurality of random numbers is determined as the first random number, where the second interval is determined based on the first parameter value and the third parameter value.

6. The method according to claim 4, characterized in that The generating the first random number based on the first parameter value, the third parameter value, and the fourth parameter value includes: determining a fifth parameter value based on the first parameter value; Generate multiple random numbers within a first interval determined based on the fifth parameter value, and determine a random number within a third interval among the generated multiple random numbers as the first random number, where the third interval is determined based on the first parameter value, the third parameter value, and the fourth parameter value.

7. The method according to claim 5 or 6, characterized in that The determining of a fifth parameter value based on the first parameter value includes: The fifth parameter value is determined based on the first parameter value and the fourth interval.

8. The method according to any one of claims 5 to 7, characterized in that The first interval is [0,2 N+1 -1], the second interval is [0,2 Q -1-M], the third interval is [0,2 Q -1-M+K], the fourth interval is (2 N -1,2 N+1 -1]; Among them, Q is the first parameter value, M is the third parameter value, K is the fourth parameter value, and N is the fifth parameter value.

9. The method according to any one of claims 4 to 8, characterized in that The method further comprises: Second indication information sent by the first communication device is received, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory counting.

10. The method according to any one of claims 3 to 9, characterized in that The method further comprises: The Ambient IoT device extends the random access window of the current round of inventory counting, and preferentially selects the extended random access opportunity as the random access opportunity.

11. The method according to any one of claims 3 to 10, characterized in that The determining a timing for performing random access based on the first random number includes: receiving the first signaling repeatedly sent by the first communication device; Each time the first signaling is received, reducing the first random number by a first value; A timing when the first random number is reduced to a second value is determined as a timing for performing random access.

12. The method according to any one of claims 1 to 11, characterized in that The method further comprises: Report identity authentication information to the first communication device when performing random access.

13. The method according to claim 12, characterized in that The reporting of identity authentication information to the first communication device at the time of random access includes: A second random number is reported to the first communication device when performing random access, where the second random number is used by the first communication device to authenticate the Ambient IoT device.

14. The method according to any one of claims 1 to 13, characterized in that The method further comprises: If the Ambient IoT device has received the first signaling corresponding to this round of inventory, the first indication information included in the currently received first signaling is ignored.

15. The method according to any one of claims 1 to 14, characterized in that The method further comprises: After determining the timing of performing random access based on the first parameter value indicated by the first indication information in the received first signaling, if the first signaling is received again, the first indication information included in the first signaling received again is ignored.

16. A communication method, characterized in that: Applied to a first communication device, the method includes: A first signaling is sent to an Ambient IoT device, where the first signaling is used for the Ambient IoT device to perform random access. The first signaling includes first indication information, where the first indication information is used to indicate a first parameter value, where the first parameter value is used by the Ambient IoT device to determine a timing for performing random access.

17. The method according to claim 16, characterized in that The first parameter value is the same as the second parameter value indicated by the second signaling, the second signaling is used to indicate the start and end of this round of inventory, and the second parameter value is used by the Ambient IoT device to determine the timing of random access.

18. The method according to claim 16 or 17, characterized in that The first parameter value is used by the Ambient IoT device to generate a first random number, and the first random number is used by the Ambient IoT device to determine a timing for performing random access.

19. The method according to claim 18, characterized in that The Ambient IoT device does not extend the random access window of the current inventory round, and the first random number is generated based on the first parameter value and the third parameter value; The Ambient IoT device extends a random access window for the current round of inventory counting, where the first random number is generated based on the first parameter value, the third parameter value, and the fourth parameter value; The third parameter value is used to indicate the time slot index currently reached in this round of inventory counting, and the fourth parameter value is used to indicate the number of extended random access opportunities.

20. The method according to claim 18 or 19, characterized in that The method further comprises: Send second indication information to the Ambient IoT device, where the second indication information is used to indicate whether to extend the random access window of the current round of inventory counting.

21. The method according to any one of claims 16 to 20, characterized in that The method further comprises: Repeat the first signaling to the Ambient IoT device.

22. The method according to any one of claims 16 to 21, characterized in that The method further comprises: Receiving identity authentication information reported by the Ambient IoT device when performing random access; Authenticate the Ambient IoT device based on the authentication information.

23. The method according to claim 22, characterized in that The receiving the identity authentication information reported by the Ambient IoT device when performing random access includes: A second random number reported by the Ambient IoT device when performing random access is received, where the second random number is used by the first communication device to authenticate the Ambient IoT device.

24. An Ambient IoT device, characterized in that: include: a transceiver module configured to receive a first signaling sent by a first communication device, where the first signaling is used for the Ambient IoT device to perform random access, and the first signaling includes first indication information, where the first indication information is used to indicate a first parameter value; The processing module is configured to determine a timing for performing random access based on the first parameter value.

25. A first communication device, characterized in that: include: The transceiver module is configured to send a first signaling to the Ambient IoT device, where the first signaling is used for the Ambient IoT device to perform random access. The first signaling includes first indication information, where the first indication information is used to indicate a first parameter value, and the first parameter value is used by the Ambient IoT device to determine a timing for random access.

26. An Ambient IoT device, characterized in that: include: one or more processors; The Ambient IoT device is used to execute the communication method according to any one of claims 1 to 15.

27. A first communication device, characterized in that: include: one or more processors; The first communication device is configured to execute the communication method according to any one of claims 16 to 23.

28. A communication system, characterized in that: The system comprises an Ambient IoT device and a first communication device, wherein the Ambient IoT device is configured to implement the communication method according to any one of claims 1 to 15, and the first communication device is configured to implement the communication method according to any one of claims 16 to 23.

29. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1 to 15 or 16 to 23.

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