Communication method and device and storage medium

Abstract

The invention relates to a communication method and device and a storage medium. The method comprises: receiving a first signaling sent by a second device, the first signaling comprising first information; wherein the first information is information related to the total number of time units in a time unit set; the first signaling is used for indicating a first device to determine a first random number and a first serial number, and the first serial number is a serial number of a time unit sending the first random number. According to the method, the first signaling sent by the second equipment is received, and the serial number of the time unit for sending the first random number is determined, so that the probability of collision when the first random numbers of the first equipment are sent by the plurality of first equipment at the same time is reduced, and the checking efficiency of the first equipment is improved.

Description

Communication method, device and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to communication methods, devices, and storage media. Background Art

[0002] In Ambient IoT design, support for non-activated devices is essential. These lack inherent RF transmission capabilities and rely on backscattering to generate transmission energy. 3GPP's design requires further refinement of methods for supporting tag inventory for non-activated devices.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a communication method, an apparatus, and a storage medium.

[0005] In a first aspect, an embodiment of the present disclosure provides a communication method, which is performed by a first device. The method includes:

[0006] receiving first signaling sent by a second device, where the first signaling includes first information;

[0007] Wherein, the first information is information related to the total number of time units in the time unit set;

[0008] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0009] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a second device, and the method includes:

[0010] Sending first signaling to at least one first device, where the first signaling includes first information;

[0011] Wherein, the first information is information related to the total number of time units in the time unit set;

[0012] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0013] In a third aspect, an embodiment of the present disclosure provides a first device, including:

[0014] A transceiver module is configured to receive a first signaling sent by a second device, where the first signaling includes first information;

[0015] Wherein, the first information is information related to the total number of time units in the time unit set;

[0016] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0017] In a fourth aspect, an embodiment of the present disclosure provides a second device, including:

[0018] A transceiver module is configured to send a first signaling to at least one first device, where the first signaling includes first information;

[0019] Wherein, the first information is information related to the total number of time units in the time unit set;

[0020] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0021] In a fifth aspect, an embodiment of the present disclosure provides a first device, including:

[0022] one or more processors;

[0023] The first device is used to execute the communication method described in any one of the first aspects of the embodiments of this disclosure.

[0024] In a sixth aspect, an embodiment of the present disclosure provides a second device, including:

[0025] one or more processors;

[0026] The second device is used to execute the communication method described in any one of the second aspects of the embodiments of this disclosure.

[0027] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including a first device and a second device; wherein the first device is configured to implement the communication method of any one of the first aspect of the embodiment of the present disclosure; and the second device is configured to implement the communication method of any one of the second aspect of the embodiment of the present disclosure.

[0028] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which, when an instruction is executed on a communication device, enables the communication device to execute any one of the communication methods of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0030] FIG1A is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0031] FIG1B is a schematic diagram showing a tag state according to an embodiment of the present disclosure;

[0032] FIG1C is a schematic diagram of an inventory process according to an embodiment of the present disclosure;

[0033] FIG2A is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure;

[0034] FIG2B is a schematic diagram illustrating the operation of a communication method according to an embodiment of the present disclosure;

[0035] FIG2C is a schematic diagram illustrating the operation of a communication method according to an embodiment of the present disclosure;

[0036] FIG2D is a schematic diagram showing the operation of the communication method according to an embodiment of the present disclosure.

[0037] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0038] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0039] FIG5 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure;

[0040] FIG6A is a schematic structural diagram of a first device proposed in an embodiment of the present disclosure;

[0041] FIG6B is a schematic structural diagram of a second device proposed in an embodiment of the present disclosure;

[0042] FIG7A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0043] FIG7B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] The embodiments of the present disclosure provide a communication method, an apparatus, and a storage medium.

[0045] In a first aspect, an embodiment of the present disclosure provides a communication method, which is performed by a first device. The method includes:

[0046] receiving first signaling sent by a second device, where the first signaling includes first information;

[0047] The first information is information related to the total number of time units in the time unit set, and the time unit is at least one time slot;

[0048] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0049] In the above embodiment, the first random number and the first serial number are determined by the first signaling; in this way, the serial number of the time unit for sending the first random number can be determined based on the first serial number, thereby avoiding collisions when multiple first devices send their respective first random numbers, thereby improving the success rate of sending the first random number.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the first signaling further includes second information;

[0051] The first signaling is further used to instruct the first device to determine a threshold based on at least one of the first information and the second information, where the threshold is the number of second signalings that need to be received before sending the first random number to the second device;

[0052] The second signaling is used to instruct the first device to enter the next sending opportunity.

[0053] In the above embodiment, the first signaling is also used to instruct the first device to determine, based on at least one of the first information and the second information, a threshold of the second signaling that needs to be received before sending the first random number to the second device; in this way, the first device can determine, based on the threshold, the number of second signalings that need to be received before sending the first random number, thereby determining the timing of sending the first random number.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0055] determining the first random number;

[0056] determining the first serial number according to the first information and the second information;

[0057] receiving a second signaling sent by the second device until the number of times the second signaling is received reaches the threshold;

[0058] sending the first random number to the second device in a first time unit, where the first time unit is a time unit with the first sequence number in the time unit set;

[0059] A response message sent by the second device is received, where the response message is used to indicate that at least one first device successfully accesses the channel.

[0060] In the above embodiment, the first random number is sent to the second device in the first time unit, and the sequence number of the first time unit is related to the first sequence number; in this way, the first device can send the first random number to the second device in the first time unit, thereby reducing collisions when different first devices send the first random numbers at the same time.

[0061] In conjunction with some embodiments of the first aspect, in some embodiments, a second signaling includes an index value related to a total number of times the second signaling is repeatedly sent;

[0062] The first time unit is the time unit with the first sequence number in the first time unit subset, the time unit set includes the first time unit subset, and the first time unit subset has a mapping relationship with the index value.

[0063] In the above embodiment, the first device pre-configures the mapping relationship between the index value and the time unit subset, and determines the first time unit according to the index value carried by the second signaling, where the first time unit is the time unit with the first sequence number in the first subset, and the first subset is the time unit subset having a mapping relationship with the index value; in this way, the first device can determine the time unit subset for sending the first random number based on the mapping relationship, thereby determining the first time unit for sending the first random number on the time unit subset, and providing a success rate for sending the first random number.

[0064] In combination with some embodiments of the first aspect, in some embodiments, a channel for transmitting the first random number has a mapping relationship with the index value.

[0065] In the above embodiment, the channel for sending the first random number has a mapping relationship with the index value; thus, the first device can send the first random number on the corresponding channel, reducing collisions when different first devices send their respective first random numbers at the same time.

[0066] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0067] Determine a second sequence number according to the first signaling, where the second sequence number is a sequence number of a time unit in the time unit for sending the first random number;

[0068] determining the number of first time units;

[0069] Determine a third sequence number according to the second sequence number and the number of the first time units, where the third sequence number is the sequence number of the first time unit in which the first device sends the first random number to the second device;

[0070] The first sequence number is determined according to the third sequence number and the number of the first time units.

[0071] In the above embodiment, the third sequence number is determined based on the second sequence number and the number of time units for sending the first random number, and the third sequence number is the sequence number of the first time unit in which the first device sends the first random number to the second device; in this way, the sequence number of the first time unit in which the first random number is sent can be determined based on the second sequence number and the number of time units for sending the first random number.

[0072] In combination with some embodiments of the first aspect, in some embodiments, the first information is the total number of time units or the total number of time units to the power of 2, and the second information is the quality factor Q value; or, the first information is the total number of time units, and the second information is the product of the total number of time units and the Q value.

[0073] In the above embodiment, various relationships between the first information and the second information are determined; in this way, multiple possible situations of the first information and the second information can be provided, making it more flexible for the first device to determine the first sequence number of the time unit for sending the first random number.

[0074] In conjunction with some embodiments of the first aspect, in some embodiments, the first signaling further includes third information, where the third information indicates at least one of the following:

[0075] Uplink or sidelink channels;

[0076] The data rate and modulation format for transmission on the uplink or sidelink;

[0077] Whether the pilot transmitted in the uplink or sidelink is an extended pilot.

[0078] In the above embodiment, the first signaling also includes the third information; thus, the first device can determine the first sequence number according to the received third information, thereby improving the flexibility of the first device in determining the first sequence number.

[0079] In conjunction with some embodiments of the first aspect, in some embodiments, the number of the first time units is determined by at least one of the following:

[0080] the number of first time units indicated by the second device;

[0081] The capabilities of the first device;

[0082] The coverage level of the first device.

[0083] In the above embodiment, the number of time units for sending the first random number is determined based on at least one of the number of time units for sending the first random number indicated by the second device, the first device's own capabilities, and the coverage level of the first device; in this way, multiple situations can be provided for determining the number of time units for sending the first random number indicated by the second device.

[0084] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is the total number of time units or 2 to the power of the total number of time units, and the second information is a Q value;

[0085] The determining the second sequence number according to the first signaling includes:

[0086] determining a third random number according to the first information, where a value range of the third random number is determined by the number of the first time units and the first information;

[0087] Using the third random number as the second serial number;

[0088] The method further comprises:

[0089] A second random number is determined according to the second information, and the second random number is used as the threshold.

[0090] In the above embodiment, a second random number is determined based on the Q value, and the second random number is used as the threshold; a third random number is determined based on the second information, and the third random number is used as the second serial number; in this way, the threshold and the second serial number determined by each first device are different, thereby avoiding the situation where multiple first devices send the first random number at the same time and a collision occurs, thereby improving the success rate of the first device sending the first random number.

[0091] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is the total number of time units, and the second information is the product of the total number of time units and the Q value;

[0092] The determining the second sequence number according to the first signaling includes:

[0093] taking a quotient of the first information and the number of the first time units as a first result;

[0094] determining a fourth random number according to the second information;

[0095] A result of a modulo operation of the fourth random number and the first result is used as the second serial number.

[0096] In the above embodiment, the fourth random number is determined based on the second information, the first result is determined based on the quotient of the first information and the number of first time units, and the result of the modulo operation of the fourth random number and the first result is used as the second serial number; in this way, the second serial number determined by each first device is different, thereby avoiding the situation where multiple first devices send the first random number at the same time and a collision occurs, thereby improving the success rate of the first device sending the first random number.

[0097] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0098] The quotient of the fourth random number and the first result is used as the threshold.

[0099] In the above embodiment, the quotient of the fourth random number and the first result is used as the threshold; in this way, the threshold determined by each first device is different, thereby avoiding the situation where multiple first devices send the first random number at the same time and a collision occurs, thereby improving the success rate of the first device sending the first random number.

[0100] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is the total number of time units, and the second information is a Q value;

[0101] The determining the second sequence number according to the first signaling includes:

[0102] The second serial number is determined according to the first information and the third information.

[0103] In the above embodiment, the fifth random number is generated according to the Q value, and the second serial number is determined according to the third information and the total number of time units; in this way, the second serial number determined by each first device is different, thereby avoiding the situation where multiple first devices send the first random number at the same time and causing a collision, thereby improving the success rate of the first device sending the first random number.

[0104] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: generating a fifth random number according to the second information, and using the fifth random number as the threshold.

[0105] In the above embodiment, a fifth random number is generated based on the second information, and the fifth random number is used as a threshold; in this way, each first device determines the second serial number differently, thereby avoiding a collision when multiple first devices send the first random number at the same time, and improving the success rate of the first device sending the first random number.

[0106] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a second device, and the method includes:

[0107] Sending first signaling to at least one first device, where the first signaling includes first information;

[0108] Wherein, the first information is information related to the total number of time units in the time unit set;

[0109] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0110] In the above embodiment, the first random number and the first serial number are determined by the first signaling; in this way, the serial number of the time unit for sending the first random number can be determined based on the first serial number, thereby avoiding collisions when multiple first devices send their respective first random numbers, thereby improving the success rate of sending the first random number.

[0111] In conjunction with some embodiments of the second aspect, in some embodiments, the sending of the first signaling to at least one first device further includes:

[0112] sending the second signaling to the at least one first device at least once;

[0113] receiving a first random number sent by the at least one first device, and sending a response message to the at least one first device;

[0114] The response message is used to indicate that at least one first device successfully accesses the channel.

[0115] In the above embodiment, the first signaling is also used to instruct the first device to determine, based on at least one of the first information and the second information, a threshold of the second signaling that needs to be received before sending the first random number to the second device; in this way, the first device can determine, based on the threshold, the number of second signalings that need to be received before sending the first random number, thereby determining the timing of sending the first random number.

[0116] In conjunction with some embodiments of the second aspect, in some embodiments, the sending of the first signaling to at least one first device further includes:

[0117] sending the second signaling to the at least one first device at least once;

[0118] receiving a first random number sent by the at least one first device, and sending a response message to the at least one first device;

[0119] The response message is used to indicate that at least one first device successfully accesses the channel.

[0120] In the above embodiment, by sending the second signaling to a first device at least once, the second signaling received by the first device reaches a threshold, thereby sending the first random number to the second device; in this way, the first device can be inventoryed using the first random number sent by the first device.

[0121] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is the total number of time units or 2 to the power of the total number of time units, and the second information is a Q value; or

[0122] The first information is the total number of time units, and the second information is the product of the total number of time units and the Q value.

[0123] In the above embodiment, various relationships between the first information and the second information are determined; in this way, multiple possible situations of the first information and the second information can be provided, making it more flexible for the first device to determine the first sequence number of the time unit for sending the first random number.

[0124] In conjunction with some embodiments of the second aspect, in some embodiments, the first signaling further includes third information, where the third information indicates at least one of the following:

[0125] Uplink or sidelink channels;

[0126] The data rate and modulation format for transmission on the uplink or sidelink;

[0127] Whether the pilot transmitted in the uplink or sidelink is an extended pilot.

[0128] In the above embodiment, the first signaling also includes the third information; thus, the first device can determine the first sequence number according to the received third information, thereby improving the flexibility of the first device in determining the first sequence number.

[0129] In combination with some embodiments of the second aspect, in some embodiments, a second signaling includes an index value related to the total number of times the second signaling is repeatedly sent.

[0130] In the above embodiment, the second signaling sent by the second device to the first device also includes an index value, and the index value is related to the total number of times the second signaling is repeatedly sent; in this way, the first device can use the index value to determine at least one of the time unit subset and channel subset for sending the first random number, thereby improving the success rate of the first device in sending the first random number.

[0131] In combination with some embodiments of the second aspect, in some embodiments, the total number of time units is pre-set according to a protocol or determined according to a configuration of the second device.

[0132] In the above embodiment, the total number of time units is pre-set according to the protocol or determined according to the configuration of the second device; in this way, the total number of time units can be sent to the first device through the first signaling, so that the first device determines the first time unit for sending the first random number based on the total number of time units.

[0133] In conjunction with some embodiments of the second aspect, in some embodiments, a first start time at which the second device receives the first random number from the first first device is later than a first end time at which the second device sends the first signaling to the last first device, and a difference between the first start time and the first end time is not less than a first threshold;

[0134] A second end time at which the second device receives the first random number of the last first device is earlier than a second start time at which the second device sends the response message to the first first device, and a difference between the second end time and the second start time is not less than a second threshold value.

[0135] In the above embodiment, the first start time when the second device receives the first random number of the first first device is later than the first end time when the second device sends the first signaling to the last first device, and the difference between the first start time and the first end time is not less than the first threshold value; the second end time when the second device receives the first random number of the last first device is earlier than the second start time when the second device sends the response message to the first first device, and the difference between the second end time and the second start time is not less than the second threshold value; in this way, there is a time interval between the second device sending the second signaling, receiving the first random number, and sending the response message, thereby reducing the load on the second device.

[0136] In a third aspect, an embodiment of the present disclosure provides a first device, including:

[0137] A transceiver module is configured to receive a first signaling sent by a second device, where the first signaling includes first information;

[0138] Wherein, the first information is information related to the total number of time units in the time unit set;

[0139] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0140] In a fourth aspect, an embodiment of the present disclosure provides a second device, including:

[0141] Sending first signaling to at least one first device, where the first signaling includes first information;

[0142] Wherein, the first information is information related to the total number of time units in the time unit set;

[0143] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0144] In a fifth aspect, an embodiment of the present disclosure provides a first device, including:

[0145] one or more processors;

[0146] The first device is used to execute the communication method described in any one of the first aspects of the embodiments of this disclosure.

[0147] In a sixth aspect, an embodiment of the present disclosure provides a second device, including:

[0148] one or more processors;

[0149] The second device is used to execute the communication method described in any one of the second aspects of the embodiments of this disclosure.

[0150] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including a first device and a second device; wherein the first device is configured to implement the communication method of any one of the first aspects, and the second device is configured to implement the communication method of any one of the second aspects.

[0151] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which, when an instruction is executed on a communication device, enables the communication device to execute a communication method as described in any one of the first and second aspects.

[0152] In a 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 method described in the optional implementation of the first and second aspects.

[0153] 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 method described in the optional implementation of the first and second aspects.

[0154] 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 method described in the optional implementation of the first and second aspects above.

[0155] It is understandable that the first device, the second device, the communication system, the storage medium, the program product, the computer program, the chip, or the chip system described above are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0156] The embodiments of the present disclosure provide a communication method, apparatus, and storage medium. In some embodiments, the terms communication method, signal transmission method, wireless frame transmission method, etc. can be used interchangeably, and the terms information processing system, communication system, etc. can be used interchangeably.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0161] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] In some embodiments, terms such as "greater than", "less 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.

[0168] 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", "device", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0169] In some embodiments, “access network device (AN device)”, “radio access network device (radio

[0170] The terms access network device (RAN device),” “base station (BS)”, “radio base station”, “fixed station”, “node”, “access point”, “transmission point (TP)”, “reception point (RP)”, “transmission / reception point (TRP)”, “panel”, “antenna panel”, “antenna array”, “cell”, “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group”, “carrier”, “component carrier”, and “bandwidth part (BWP)” are used interchangeably.

[0171] In some embodiments, the terms "terminal", "terminal device", "user equipment (terminal)", "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. can be used interchangeably.

[0172] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0173] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0174] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0175] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0176] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0177] In some embodiments, "obtain", "get", "obtain", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from a protocol, obtaining by self-processing, autonomous implementation, etc.

[0178] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0179] In some embodiments, "predetermined" and "preset" can be interpreted as pre-specified in a protocol, etc., or can be interpreted as a pre-set action performed by a device, etc.

[0180] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0181] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0182] 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.

[0183] FIG1A is an exemplary schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1A , a communication system 100 includes a first device 101 and a second device 102 .

[0184] In some embodiments, the terminal includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, 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 a wireless terminal device in a smart home, but is not limited thereto. It is 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. It is known to those skilled in the art that with the evolution of 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. The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0185] The embodiments of the present disclosure may 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), 5th generation mobile communication system-Advanced (5G-Advanced), 6th generation mobile communication system (6G), 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 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, a combination of multiple systems (for example, a combination of LTE or LTE-A with 5G) may also be employed.

[0186] In some embodiments, Radio Frequency Identification (RFID) is an automatic identification technology that uses radio frequency signals through spatial coupling (alternating magnetic or electromagnetic fields) to achieve contactless information transmission and identification through the transmitted information. RFID inventory is performed using the Select, Inventory, and Access command sets.

[0187] In some embodiments, the Select command set includes Select and Challenge commands. The reader can use the Select command to select one or more tags in the tag group based on the data stored in the tag, and can use the Challenge command to query the encryption and authentication type of the tag. The reader can subsequently inventory or access the selected tags.

[0188] In some embodiments, the Inventory command set includes the Query, QueryAdjust, QueryRep, ACK, and NAK commands, which allow the reader to identify the tag. An inventory round begins with a Query command and ends with the subsequent issuance of a Query command, or the issuance of a Select command and a Challenge command. Sending a Query command requires associating it with one of four defined sessions (S0, S1, S2, and S3), and a session can only support one inventory round. Multiple tags may respond to an inventory round. The reader detects a single tag response and requests the tag's EPC code.

[0189] In some instances, the Access command set includes Req_RN, Read, Write, Lock, Kill, Access, BlockWrite, BlockErase, BlockPermalock, Authenticate, ReadBuffer, SecureComm, AuthComm, KeyUpdate, Untraceable, FileOpen, FileList, FilePrivilege, FileSetup, and TagPrivilege commands. The reader can read, write, lock, and deactivate tags, as well as perform security-related operations such as authentication and file-related operations such as opening files stored on the tag. Access operations include multiple commands, and a reader may only support access to one tag.

[0190] Figure 1B is a schematic diagram of the tag state according to an embodiment of the present disclosure. As shown in Figure 1B, for a tag, after receiving a query command, it enters the arbitration state, which can be regarded as the "holding state" of the tag. It sets the corresponding counter value according to the Q value in the command, and reduces the value by 1 each time a repeated query (QueryRep) command is received. When the value is 0, the tag will switch to the reply state and backscatter RN16 (16-bit random number). If an ACK is further received, it is confirmed that the tag has accessed successfully; otherwise, if an invalid ACK is received or an ACK carries an erroneous RN16, or if the corresponding command is not received until the maximum waiting time T2, the tag returns to the arbitrate state.

[0191] In some embodiments, Ambient IoT designs support non-activated devices, which lack inherent RF transmission capabilities and rely on backscattering to generate transmission energy. 3GPP designs must at least support a basic use case for tag inventory, using RFID as a reference for their design.

[0192] In some embodiments, the passive Internet of Things uses channels such as the Physical Downlink Shared Channel (PDSCH) / Physical Uplink Shared Channel (PUSCH) to carry the corresponding inventory commands, including but not limited to the scenario where the base station (BS) acts as a reader and the tag acts as a device. It can still be similar to the New Radio (NR) in which PDSCH / PUSCH is used to carry the corresponding inventory commands and the reply of the tag device. Figure 1C is a schematic diagram of the inventory process shown in an embodiment of the present disclosure. As shown in Figure 1C, the base station or the terminal used as a reader can carry Select signaling, Query signaling, ACK and QueryRep signaling through the physical downlink shared channel, and the tag device can use the physical uplink shared channel to carry RN16 and data.

[0193] FIG2A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0194] Step S2101: The second device sends a first signaling to the first device.

[0195] In some embodiments, the first device may be a tag device or a tag terminal, and the second device may be a base station or a terminal used as a reader / writer.

[0196] In some embodiments, the second device sends a first signaling to the first device, where the first signaling includes first information, wherein the first information is information related to the total number of time units in the time unit set, and the time unit is at least one time slot.

[0197] In some embodiments, the first device receives the first signaling.

[0198] In some embodiments, the first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit in which the first random number is sent.

[0199] In some embodiments, the first signaling also includes second information, and the first signaling is further used to indicate that a threshold is determined based on at least one of the first information and the second information, and the threshold is the number of second signalings that need to be received before sending the first random number to the second device; wherein the second signaling is used to indicate that the first device enters the next sending opportunity.

[0200] In some embodiments, the first signaling includes but is not limited to Query signaling, and the second signaling includes but is not limited to QueryRep signaling.

[0201] In some embodiments, the first information may include the total number of time units, or the total number of time units to the power of 2. For example, if the first information includes the total number of time units to the power of 2, when the total number of time units is 5, the first information may be 2 5 .

[0202] In some embodiments, the first information and the second information satisfy any of the following relationships:

[0203] The first information is the total number of time units or 2 to the power of the total number of time units, and the second information is the quality factor Q value; or

[0204] The first information is the total number of time units, and the second information is the product of the total number of time units and the quality factor Q value.

[0205] In some embodiments, the first signaling further includes third information, where the third information indicates at least one of the following:

[0206] Uplink or sidelink channels;

[0207] The data rate and modulation format for transmission on the uplink or sidelink;

[0208] Whether the pilot transmitted in the uplink or sidelink is an extended pilot.

[0209] In some embodiments, the first information further includes the number of time units during which the second device instructs the first device to send the first random number.

[0210] Step S2102: The second device sends at least one second signaling to the first device.

[0211] In some embodiments, the second device repeatedly sends the second signaling to the first device, and one second signaling includes an index value related to the total number of times the second signaling is repeatedly sent.

[0212] In some embodiments, the first device receives at least one second signaling.

[0213] Step S2103: The first device sends a first random number to the second device.

[0214] In some embodiments, the first device may determine the number of time units for sending the first random number based on at least one of the number of time units instructed by the second device for the first device to send the first random number, the first device's own capability, and the coverage level of the first device.

[0215] In some embodiments, it often takes more than one time unit for the first device to send the first random number to the second device. This application determines how many time units are required for the first device to send the first random number to the second device by calculating the number of time units for sending the first random number.

[0216] In some embodiments, the first device determines a threshold according to at least one of the first information and the second information, where the threshold is the number of times the second signaling needs to be received before sending the first random number to the second device.

[0217] In some embodiments, when the first information is the total number of time units or the total number of time units to the power of 2, and the second information is a Q value, determining the second sequence number according to the first signaling includes:

[0218] determining a third random number according to the first information, where a value range of the third random number is determined by the number of the first time units and the first information;

[0219] Using the third random number as the second serial number;

[0220] The method further comprises:

[0221] A second random number is determined according to the second information, and the second random number is used as a threshold.

[0222] For example, the first information is the total number of time units R, assuming R is 8, and the Q value in the second information is 10. A random number n1 corresponding to the Q value can be generated, and the value range of n1 is [0,2 Q -1], that is, [[0,2 10 -1], taking n1 as the threshold; generating a third random number according to the total number of time units R, wherein the value range of the third random number is Wherein, R is the total number of time units, N is the number of time units for sending the first random number, and the value range of N is [1, 2, 4]. If N=1 at this time, the value range of the third random number is [0, 7]. If N=2 at this time, the value range of the third random number is [0, 3]. The third random number is used as the second serial number.

[0223] For example, if the first information is the total number of time units of 2, R is 8, and the Q value in the second information is 10, a random number n1 corresponding to the Q value can be generated, and the value range of n1 is [0,2 Q -1], we know that the value range of n1 is [0,1023], and n1 is used as the threshold; the third random number is generated according to the total number of time units of 2, where the value range of the third random number is [0,2 R / N -1], where R is the total number of time units, N is the number of time units for sending the first random number, and the value range of N is [1, 2, 4]. If N = 1, the value range of the third random number is [0, 255]. If N = 4, the value range of the third random number is [0, 3]. The third random number is used as the second serial number.

[0224] In some embodiments, when the first information is the total number of time units and the second information is the product of the total number of time units and the Q value, determining the second sequence number according to the first signaling includes:

[0225] taking a quotient of the first information and the number of the first time units as a first result;

[0226] determining a fourth random number according to the second information;

[0227] Using a result of a modulo operation of the fourth random number and the first result as a second serial number;

[0228] The method further comprises:

[0229] A quotient of the fourth random number and the first result is used as a threshold.

[0230] For example, the first information is the total number of time units R, assuming R is 8; the second information is the product of the total number of time units R and the Q value, and if Q is 2, the second information is 16. The fourth random number n1 is determined based on the second information. The value range of n1 is [0, 65535]. At this time, the number of time units in which the first random number is sent is N, and the value range of N is [1, 2, 4]. If N = 1, the quotient of the total number of time units and the number of time units in which the first random number is sent is S, where S = R / N, indicating that S is 8. Therefore, the quotient of the fourth random number n1 and S is used as the threshold, and the result of the modulo operation between the fourth random number n1 and S is used as the second serial number.

[0231] In some embodiments, when the first information is the total number of time units, the second information is the Q value, and the first signaling further includes third information; determining the second sequence number according to the first signaling includes:

[0232] determining the second serial number according to the first information and the third information;

[0233] The method further comprises:

[0234] A fifth random number is generated according to the second information, and the fifth random number is used as the threshold.

[0235] For example, the first information is the total number of time units R, assuming R is 8, and the Q value in the second information is 10. The fifth random number n1 is generated based on the Q value, where the value range of n1 is [0,2 Q -1], that is, [0,1023], and use the fifth random number n1 as the threshold; at the same time, determine the second serial number M based on the third information. At this time, the second serial number M may be greater than the total number of time units R, for example, R = 10, and then it is necessary to use the modular operation to calculate the remainder of the second serial number M, that is, 10 mod 8 = 2. Therefore, the final second serial number M is 2.

[0236] In some embodiments, the second sequence number is a sequence number of a time unit in the set of time units in which the first random number is sent.

[0237] In some embodiments, the quotient of the second serial number and the number of time units for sending the first random number is rounded down to obtain a first result, and the product of the first result and the number of time units for sending the first random number is used as the third serial number.

[0238] For example, if the second serial number M=9 and the number of time units for sending the first random number N=4, the calculation formula for the third serial number is: That is From this we can see that the third serial number is 8.

[0239] In some embodiments, the third serial number is the serial number of the first time unit in which the first device sends the first random number to the second device.

[0240] In some embodiments, the first serial number is determined based on the third serial number and the number of time units in which the first random number is sent.

[0241] For example, if the third serial number is 8 and the number of time units for sending the first random number is 4, then the first serial number starts with 8 and the four time units are 8, 9, 10, and 11. In other words, the first device will use the four time units 8, 9, 10, and 11 to send the first random number.

[0242] In some embodiments, the first device pre-configures a mapping relationship between an index value and a time unit subset; wherein the first time unit is a time unit with a first serial number in the first subset, and the first time unit subset is a time unit subset having a mapping relationship with the index value.

[0243] For example: assuming that the total number of times the second device repeatedly sends the second signaling is 4, the second device repeatedly sends the second signaling to at least one first device, each second signaling carries an index value index, and the value range of the index value index does not exceed 4.

[0244] It should be noted that each first device has a mapping relationship between an index value index and a time unit subset; for example: when the index value index is 1, it is mapped to the first time unit subset; when the index value index is 2, it is mapped to the second time unit subset. When the first device receives the second signaling, it obtains the index value included in the second signaling and can determine the time unit subset corresponding to the index value based on the mapping relationship. Furthermore, according to the method in step S2101, the second sequence number, threshold, and number of time units for sending the first random number in the time unit subset corresponding to the index value index are determined, and then the third sequence number is determined based on the second sequence number and the number of time units for sending the first random number. Finally, the first sequence number is determined based on the third sequence number and the number of time units for sending the first random number, that is, the sequence number of the time unit for sending the first random number by the first device.

[0245] Figure 2B is a schematic diagram illustrating the operation of a communication method according to an embodiment of the present disclosure. As shown in Figure 2B, above the dotted line, the second device repeatedly sends the second signaling to the four first devices, wherein the second signaling sent to the first first device carries an index value of 0, the second signaling sent to the second first device carries an index value of 1, the second signaling sent to the third first device carries an index value of 2, and the second signaling sent to the fourth first device carries an index value of 3. Below the dotted line, the four first devices send the first random number in reverse to the second device.

[0246] It should be noted that after each first device receives the second signaling, it extracts the index value index carried by the second signaling, determines the time unit subset corresponding to the index value index based on the mapping relationship between the index value index and the time unit subset, and determines the first sequence number and the first random number of the time unit subset corresponding to the index value index according to the method in step S2101. The first sequence number is the sequence number of the time unit in the time unit subset where the first device sends the first random number. When the threshold of the second signaling that the first device needs to receive is less than or equal to 0, the first device uses the time unit with the first sequence number to send the first random number to the second device.

[0247] In some embodiments, the first device pre-configures a mapping relationship between index values ​​and channels.

[0248] In some embodiments, sending the first random number to the second device in the first time unit includes: sending the first random number to the second device according to the channel corresponding to the index value and the first time unit.

[0249] For example: assuming that the total number of times the second device repeatedly sends the second signaling is 4, the second device repeatedly sends the second signaling to at least one first device, and each second signaling also carries an index value index, and the value range of the index value index does not exceed 4.

[0250] It should be noted that each first device has a mapping relationship between the index value index and the time unit subset, and a mapping relationship between the index value index and the channel subset; for example: when the index value index is 1, it is mapped to the first time unit subset and the first channel subset; when the index value index is 2, it is mapped to the second time unit subset and the second channel subset. After determining the time unit subset and the channel subset corresponding to the index value index, the sending channel is determined according to the channel subset, and according to the method in step S2101, the second serial number, the threshold, and the number of time units for sending the first random number are determined. The third serial number is determined according to the second serial number and the number of time units for sending the first random number. The first serial number is determined according to the third serial number and the number of time units for sending the first random number, that is, the serial number of the time unit for sending the first random number by the first device, and the first random number is sent using the time unit with the first serial number on the sending channel.

[0251] In some embodiments, the channel subset may include one of an operating channel, a carrier, and a frequency.

[0252] Figure 2C is a working diagram of the communication method shown in accordance with an embodiment of the present disclosure. As shown in Figure 2C, above the dotted line, the second device repeatedly sends the second signaling to the four first devices in channel #0, and repeatedly sends the second signaling to the four first devices in channel #1. As shown in the figure, in channel #0, the second signaling sent by the second device to the first first device carries an index value of index 0, the second signaling sent to the second first device carries an index value of index 1, the second signaling sent to the third first device carries an index value of index 2, and the second signaling sent to the fourth first device carries an index value of index 3; in channel #1, the second signaling sent by the second device to the fifth first device carries an index value of index 0, the second signaling sent to the sixth first device carries an index value of index 1, the second signaling sent to the seventh first device carries an index value of index 2, and the second signaling sent to the eighth first device carries an index value of index 3. Below the dotted line, the four first devices in channel #0 determine that the sending channel is channel #0 based on the index value. After the received second signaling reaches the threshold, they send the first random number of their respective devices to the second device through sending channel #0; the four first devices in channel #1 determine that the sending channel is channel #1 based on the index value. After the received second signaling reaches the threshold, they send the first random number of their respective devices to the second device through sending channel #1.

[0253] It should be noted that after each first device receives the second signaling sent by the second device via the corresponding channel, it extracts the index value index carried in the second signaling and, based on the mapping relationship between the index value index and the time unit subset and the mapping relationship between the index value index and the channel subset, determines the time unit subset and the channel subset corresponding to the index value index. The first device then determines the transmission channel based on the channel subset, and determines the first sequence number and the first random number of the time unit subset corresponding to the index value index, i.e., the sequence number of the time unit in which the first device sends the first random number within the time unit subset. When the threshold of the second signaling to be received by the first device is less than or equal to 0, the first device uses the transmission channel to send the first random number to the second device. For example, if the first first device receives the second signaling sent by the second device via channel #0, and determines the transmission channel as channel #0 and the first sequence number based on the index value index carried in the second signaling, then when the threshold of the second signaling to be received is less than or equal to 0, the first random number is sent to the second device using the time unit with the first sequence number within channel #0.

[0254] In some embodiments, each time the first device receives a second signaling, the threshold for receiving the second signaling is reduced by a preset value.

[0255] For example: when the second information received is a Q value, each time a second signaling is received, the threshold for receiving the second signaling will be subtracted by 1; when the second information is the product of the total number of time units and the Q value, each time a second signaling is received, the threshold for receiving the second signaling will be subtracted by the total number of time units.

[0256] In some embodiments, when the threshold of the second signaling to be received is equal to 0 or less than 0, the first random number is sent to the second device.

[0257] Optionally, the first random number may be a 16-bit random number, namely RN16, or a random number of other bits.

[0258] In some embodiments, the first start time when the second device receives the first random number from the first first device is later than the first end time when the second device sends the first signaling to the last first device, and the difference between the first start time and the first end time is not less than the first threshold value.

[0259] Step S2104: The second device sends a response message to the first device.

[0260] In some embodiments, when the second device receives the first random number sent by the first device, it sends a response message to the second device, where the response message is used to indicate that the first device successfully accesses the channel.

[0261] In some embodiments, the response message sent by the second device includes ACK information of at least one first device, the ACK information of each first device is the same as the first random number sent by the first device to the second device, and the ACK information of each first device is located in the corresponding field of the response message.

[0262] In some embodiments, the second end time when the second device receives the first random number of the last first device is earlier than the second start time when the second device sends a response message to the first first device, and the difference between the second end time and the second start time is not less than the second threshold value.

[0263] Figure 2D is a schematic diagram of the communication method according to an embodiment of the present disclosure. As shown in Figure 2D, the second device sends at least one second signaling to four first devices numbered #0, #1, #2, and #3 respectively. After each first device receives the second signaling, it subtracts a preset value from the threshold of the second signaling to be received. When the threshold is less than or equal to 0, it sends a first random number to the second device. After the second device receives the first random numbers sent by the four first devices, it sends a response message to the four first devices. The response message includes ACK information of the four devices. The ACK information of each first device is located in the corresponding field, wherein the ACK information of the first device numbered #0 is located at bits 0 to 15 of the response message, the ACK information of the first device numbered #0 is located at bits 0 to 15 of the response message, the ACK information of the first device numbered #1 is located at bits 16 to 31 of the response message, the ACK information of the first device numbered #2 is located at bits 32 to 47 of the response message, and the ACK information of the first device numbered #3 is located at bits 48 to 63 of the response message.

[0264] It should be noted that T1 is the first threshold value and T2 is the second threshold value, wherein the starting time when the second device receives the first random number from the first device numbered #0 is later than the end time when the second device sends the first signaling to the last first device, and the difference between the start time and the end time is not less than T1.

[0265] It should also be noted that the end time of the second device receiving the first random number of the first device numbered #3 is earlier than the start time of the second device sending the response message, and the difference between the end time and the start time is not less than T2.

[0266] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0267] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3 , the embodiment of the present disclosure involves a first device 101, and the method includes:

[0268] Step S3101: Receive a first signaling sent by a second device.

[0269] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0270] In some embodiments, the first device is a tag device.

[0271] In some embodiments, the first device receives first signaling sent by the second device, where the first signaling includes first information, wherein the first information includes information related to the total number of time units in the time unit set, where the time unit is at least one time slot.

[0272] In some embodiments, the first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit in which the first random number is sent.

[0273] In some embodiments, the first signaling also includes second information, and the first signaling is also used to instruct the first device to determine a threshold of the second signaling that needs to be received before sending the first random number to the second device based on at least one of the first information and the second information; wherein the second signaling is used to instruct the first device to enter the next sending opportunity.

[0274] In some embodiments, the first signaling includes but is not limited to Query signaling, and the second signaling includes but is not limited to QueryRep signaling.

[0275] In some embodiments, the first device determines the second sequence number and the threshold value based on the first information and the second information.

[0276] Step S3102: Receive at least one second signaling sent by a second device.

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

[0278] In some embodiments, the first device receives second signaling repeatedly sent by the second device, and each second signaling further carries an index value, where the index value is related to the total number of times the second signaling is repeatedly sent.

[0279] Step S3103: Send a first random number to the second device.

[0280] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0281] In some embodiments, the first device determines the second sequence number and the threshold value based on the first information and the second information.

[0282] In some embodiments, each time the first device receives a second signaling, the threshold for receiving the second signaling is reduced by a preset value.

[0283] In some embodiments, when the threshold of the second signaling to be received is equal to 0 or less than 0, the first random number is sent to the second device.

[0284] In some embodiments, the first random number is a 16-bit random number RN16 or a random number of other bits.

[0285] Step S3104: Receive a response message sent by the second device.

[0286] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0287] In some embodiments, the response message includes ACK information of at least one first device, the ACK information of each first device is the same as the first random number sent by the first device to the second device, and the ACK information of each first device is located in a corresponding field of the response message.

[0288] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure involves a second device 102, and the method includes:

[0289] Step S4101: Send a first signaling to a first device.

[0290] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0291] In some embodiments, the second device is a base station or a terminal used as a reader / writer.

[0292] In some embodiments, the first signaling sent by the second device to the first device includes first information, wherein the first information is information related to the total number of time units in the time unit set, and the time unit is at least one time slot.

[0293] In some embodiments, the first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit in which the first random number is sent.

[0294] In some embodiments, the first signaling also includes second information, and the first signaling is further used to instruct the first device to determine a threshold of the second signaling that needs to be received before sending the first random number to the second device based on at least one of the first information and the second information; wherein the second signaling is used to instruct the first device to enter the next opportunity.

[0295] In some embodiments, the first signaling includes but is not limited to Query signaling, and the second signaling includes but is not limited to QueryRep signaling.

[0296] Step S4102: Send at least one second signaling to the first device.

[0297] The optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0298] In some embodiments, the second device repeatedly sends the second signaling to the first device, and each second signaling further carries an index value, where the index value is related to the total number of times the second signaling is repeatedly sent.

[0299] Step S4103: Receive a first random number sent by the first device.

[0300] The optional implementation of step S4103 can refer to the optional implementation of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0301] In some embodiments, the second device receives the first random number sent by the first device.

[0302] In some embodiments, the first random number is a 16-bit random number RN16, or a random number of other bits.

[0303] Step S4104: Send a response message to the first device.

[0304] The optional implementation of step S4104 can refer to the optional implementation of step S2104 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0305] In some embodiments, when the second device receives the first random number sent by the first device, it sends a response message to the second device, where the response message is used to indicate that the first device successfully accesses the channel.

[0306] In some embodiments, the response message sent by the second device includes ACK information of at least one first device, the ACK information of each first device is the same as the first random number sent by the first device to the second device, and the ACK information of each first device is located in the corresponding field of the response message.

[0307] FIG5 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a communication method for a communication system 100, the method comprising:

[0308] Step S5101: The second device sends a first signaling to the first device.

[0309] The optional implementation of step S5101 can refer to the optional implementation of step S2101 in Figure 2A, step S4101 in Figure 4, and other related parts in the embodiments involved in Figures 2A and 4, which will not be repeated here.

[0310] In some embodiments, the first device is a tag device or a tag terminal; the second device is a base station or a terminal used as a reader / writer.

[0311] In some embodiments, the first device receives first signaling sent by the second device, where the first signaling includes first information, wherein the first information is information related to the total number of time units in the time unit set, and the time unit is at least one time slot.

[0312] In some embodiments, the first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit in which the first random number is sent.

[0313] In some embodiments, the first signaling also includes second information, and the first signaling is also used to instruct the first device to determine a threshold of the second signaling that needs to be received before sending the first random number to the second device based on at least one of the first information and the second information; wherein the second signaling is used to instruct the first device to enter the next sending opportunity.

[0314] In some embodiments, the second signaling includes but is not limited to QueryRep signaling, and the first signaling includes but is not limited to Query signaling.

[0315] Step S5102: The first device determines a first random number and a first serial number according to the first signaling.

[0316] Optional implementations of step S5102 may refer to step S2101 in FIG. 2A , step S3101 in FIG. 3 , and other related parts in the embodiments involved in FIG. 2A and FIG. 3 , which will not be described in detail here.

[0317] In some embodiments, the first device determines the second sequence number and the threshold value based on the first information and the second information.

[0318] Step S5103: The second device sends at least one second signaling to the first device.

[0319] The optional implementation of step S5103 can refer to the optional implementation of step S2102 in Figure 2A, step S4102 in Figure 4, and other related parts in the embodiments involved in Figures 2A and 4, which will not be repeated here.

[0320] In some embodiments, after the second device sends the first signaling to the first device, it continues to send at least one second signaling.

[0321] In some embodiments, the second device repeatedly sends the second signaling to the first device, and each second signaling further carries an index value, where the index value is related to the total number of times the second signaling is repeatedly sent.

[0322] In some implementations, the first device receives at least one second signaling sent by the second device.

[0323] Step S5104: The first device sends a first random number to the second device in a time unit of a first sequence number.

[0324] The optional implementation of step S5104 can refer to the optional implementation of step S2103 in Figure 2A, step S3103 in Figure 3, and other related parts in the embodiments involved in Figures 2A and 3, which will not be repeated here.

[0325] In some embodiments, each time the first device receives a second signaling, the threshold for receiving the second signaling is reduced by a preset value.

[0326] In some embodiments, when the threshold of the second signaling to be received is equal to 0 or less than 0, the first random number is sent to the second device.

[0327] In some embodiments, the second device receives the first random number sent by the first device.

[0328] Step S5105: The second device sends a response message to the first device.

[0329] The optional implementation of step S5105 can refer to the optional implementation of step S2104 in Figure 2A, step S4104 in Figure 4, and other related parts in the embodiments involved in Figures 2A and 4, which will not be repeated here.

[0330] In some embodiments, when the second device receives the first random number sent by the first device, it sends a response message to the second device, where the response message is used to indicate that the first device successfully accesses the channel.

[0331] In some embodiments, the response message includes ACK information of at least one first device, the ACK information of each first device is the same as the first random number sent by the first device to the second device, and the ACK information of each first device is located in a corresponding field of the response message.

[0332] 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 the first device 101 in any of the above methods. For another example, another apparatus is provided that includes units or modules for implementing each step performed by the second device 102 in any of the above methods.

[0333] 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.

[0334] 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.

[0335] FIG6A is a schematic diagram of the structure of a first device according to an embodiment of the present disclosure. As shown in FIG6A , the first device may include a transceiver module 6101 .

[0336] In some embodiments, the transceiver module is configured to receive first signaling sent by a second device, where the first signaling includes first information;

[0337] Wherein, the first information is information related to the total number of time units in the time unit set;

[0338] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0339] In some embodiments, the first signaling further includes second information;

[0340] The first signaling is further used to instruct the first device to determine a threshold based on at least one of the first information and the second information, where the threshold is the number of second signalings that need to be received before sending the first random number to the second device;

[0341] The second signaling is used to instruct the first device to enter the next sending opportunity.

[0342] In some embodiments, the first device further includes:

[0343] a processing module, configured to determine the first random number;

[0344] determining the first serial number according to the first information and the second information;

[0345] The transceiver module is further configured to receive a second signaling sent by the second device until the number of times the second signaling is received reaches the threshold;

[0346] sending the first random number to the second device in a first time unit, where the first time unit is a time unit with the first sequence number in the time unit set;

[0347] A response message sent by the second device is received, where the response message is used to indicate that at least one first device successfully accesses the channel.

[0348] In some embodiments, a second signaling includes an index value associated with a total number of times the second signaling is repeatedly sent;

[0349] The first time unit is the time unit with the first sequence number in the first time unit subset, the time unit set includes the first time unit subset, and the first time unit subset has a mapping relationship with the index value.

[0350] In some embodiments, a channel for transmitting the first random number has a mapping relationship with the index value.

[0351] In some embodiments, the processing module is further configured to determine a second sequence number according to the first signaling, where the second sequence number is a sequence number of a time unit in the time unit for sending the first random number;

[0352] determining the number of first time units;

[0353] Determine a third sequence number according to the second sequence number and the number of the first time units, where the third sequence number is the sequence number of the first time unit in which the first device sends the first random number to the second device;

[0354] The first sequence number is determined according to the third sequence number and the number of the first time units.

[0355] In some embodiments, the first information is the total number of time units or 2 to the power of the total number of time units, and the second information is a quality factor Q value; or

[0356] The first information is the total number of time units, and the second information is the product of the total number of time units and the Q value.

[0357] In some embodiments, the first signaling further includes third information, wherein the third information indicates at least one of the following:

[0358] Uplink or sidelink channels;

[0359] The data rate and modulation format for transmission on the uplink or sidelink;

[0360] Whether the pilot transmitted in the uplink or sidelink is an extended pilot.

[0361] In some embodiments, the number of the first time units is determined by at least one of the following:

[0362] the number of first time units indicated by the second device;

[0363] The capabilities of the first device;

[0364] The coverage level of the first device.

[0365] In some embodiments, the first information is the total number of time units or 2 to the power of the total number of time units, and the second information is a Q value;

[0366] The determining the second sequence number according to the first signaling includes:

[0367] The processing module is further configured to determine a third random number based on the first information, where a value range of the third random number is determined by the number of the first time units and the first information;

[0368] The third random number is used as the second serial number.

[0369] In some embodiments, the method further comprises:

[0370] A second random number is determined according to the second information, and the second random number is used as the threshold.

[0371] In some embodiments, the first information is the total number of time units, and the second information is the product of the total number of time units and the Q value;

[0372] The determining the second sequence number according to the first signaling includes:

[0373] The processing module is further configured to take the quotient of the first information and the number of the first time units as a first result;

[0374] determining a fourth random number according to the second information;

[0375] A result of a modulo operation of the fourth random number and the first result is used as the second serial number.

[0376] In some embodiments, the method further comprises:

[0377] The quotient of the fourth random number and the first result is used as the threshold.

[0378] In some embodiments, the first information is the total number of time units, and the second information is a Q value;

[0379] The determining the second sequence number according to the first signaling includes:

[0380] The processing module is further configured to generate a fifth random number according to the second information, and use the fifth random number as the threshold.

[0381] Optionally, the processing module is used to execute the communication steps such as sending and / or receiving performed by the first device in any of the above methods, such as step S3101, which will not be repeated here.

[0382] FIG6B is a schematic diagram of the structure of a second device according to an embodiment of the present disclosure. As shown in FIG6B , the second device may include a transceiver module 6201 .

[0383] In some embodiments, the transceiver module is configured to send first signaling to at least one first device, where the first signaling includes first information;

[0384] Wherein, the first information is information related to the total number of time units in the time unit set;

[0385] The first signaling is used to instruct the first device to determine a first random number and a first sequence number, where the first sequence number is the sequence number of a time unit for sending the first random number.

[0386] In some embodiments, the first signaling further includes second information;

[0387] The first signaling is further used to instruct the first device to determine a threshold according to at least one of the first information and the second information;

[0388] The threshold is the number of times the second signaling needs to be received before sending the first random number to the second device;

[0389] The second signaling is used to instruct the first device to enter the next sending opportunity.

[0390] In some embodiments, the transceiver module is further configured to send the second signaling to the first device;

[0391] receiving a first random number sent by the first device;

[0392] A response message is sent to the first device, where the response message is used to indicate that the first device has successfully accessed the channel.

[0393] In some embodiments, the first information is the total number of time units or 2 to the power of the total number of time units, and the second information is a Q value; or

[0394] The first information is the total number of time units, and the second information is the product of the total number of time units and the Q value.

[0395] In some embodiments, the first signaling further includes third information, wherein the third information indicates at least one of the following:

[0396] Uplink or sidelink channels;

[0397] The data rate and modulation format for transmission on the uplink or sidelink;

[0398] Whether the pilot transmitted in the uplink or sidelink is an extended pilot.

[0399] In some embodiments, a second signaling includes an index value related to the total number of times the second signaling is repeatedly sent.

[0400] In some embodiments, the total number of time units is pre-set according to a protocol or determined according to a configuration of the second device.

[0401] In some embodiments, a first start time at which the second device receives the first random number from the first first device is later than a first end time at which the second device sends the first signaling to the last first device, and a difference between the first start time and the first end time is not less than a first threshold value;

[0402] A second end time at which the second device receives the first random number of the last first device is earlier than a second start time at which the second device sends the response message to the first first device, and a difference between the second end time and the second start time is not less than a second threshold value.

[0403] Optionally, the processing module is used to execute the communication steps such as sending and / or receiving performed by the second device in any of the above methods, such as step S4101, which will not be repeated here.

[0404] Figure 7A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device, a core network device, etc.), an IoT device, a first device, a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports an IoT device implementing any of the above methods. Communication device 8100 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.

[0405] As shown in Figure 7A, the communication device 8100 includes one or more processors 8101. The processor 8101 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 the communication protocol 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. Optionally, the communication device 8100 is used to perform any of the above methods. Optionally, one or more processors 8101 are used to call instructions to enable the communication device 8100 to perform any of the above methods.

[0406] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, step S2102, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0407] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Alternatively, all or part of the memories 8103 may be located outside the communication device 8100. In alternative embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuits 8104 are connected to the memory 8102 and may be configured to receive data from the memory 8102 or other devices, or to send data to the memory 8102 or other devices. For example, the interface circuits 8104 may read data stored in the memory 8102 and send the data to the processor 8101.

[0408] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 7A . 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.

[0409] 7B is a schematic diagram of the structure of the chip 8200 proposed in an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG7B , but the present disclosure is not limited thereto.

[0410] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

[0411] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 8200 further includes one or more memories 8203 for storing data. Alternatively, all or part of memory 8203 may be located external to chip 8200. Optionally, interface circuit 8202 is connected to memory 8203 and may be used to receive data from memory 8203 or other devices, or may be used to send data to memory 8203 or other devices. For example, interface circuit 8202 may read data stored in memory 8203 and send the data to processor 8201.

[0412] In some embodiments, the interface circuit 8202 performs at least one of the communication steps (e.g., step S2101, but not limited thereto) in the above method, such as sending and / or receiving. The interface circuit 8202 performing the communication steps (e.g., sending and / or receiving) in the above method, for example, means that the interface circuit 8202 performs data exchange between the processor 8201, chip 8200, memory 8203, or a transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (e.g., step S2102, but not limited thereto).

[0413] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 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 temporary storage medium.

[0414] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0415] 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.

Claims

1. A communication method, characterized in that, performed by a first device, the method comprising: receiving a first signaling sent by a second device, the first signaling including first information; wherein the first information is information related to the total number of time units in a time unit set; the first signaling is used to instruct the first device to determine a first random number and a first sequence number, and the first sequence number is the sequence number of the time unit for sending the first random number.

2. The method according to claim 1, characterized in that, the first signaling further includes second information; the first signaling is further used to instruct the first device to determine a threshold according to at least one of the first information and the second information, and the threshold is the number of times of receiving a second signaling before sending the first random number to the second device; wherein the second signaling is used to instruct the first device to enter the next transmission opportunity.

3. The method according to claim 2, characterized in that, further comprising: determining the first random number; determining the first sequence number according to the first information and the second information; receiving the second signaling sent by the second device until the number of times of receiving the second signaling reaches the threshold; sending the first random number to the second device in a first time unit, and the first time unit is the time unit of the first sequence number in the time unit set; receiving a response message sent by the second device, and the response message is used to indicate that at least one first device successfully accesses the channel.

4. The method according to claim 3, characterized in that, a second signaling includes an index value related to the total number of times of repeatedly sending the second signaling; the first time unit is the time unit of the first sequence number in a first time unit subset, the time unit set includes the first time unit subset, and the first time unit subset has a mapping relationship with the index value.

5. The method according to claim 4, characterized in that, the channel for transmitting the first random number has a mapping relationship with the index value.

6. The method according to claim 2, characterized in that, the method further comprises: determining a second sequence number according to the first signaling, and the second sequence number is the sequence number of one time unit in the time unit for sending the first random number; determining the number of first time units; determining a third sequence number according to the second sequence number and the number of first time units, and the third sequence number is the sequence number of the first time unit for the first device to send the first random number to the second device; determining the first sequence number according to the third sequence number and the number of first time units.

7. The method according to claim 6, characterized in that, the first information is the total number of time units or the total number of time units to the power of 2, and the second information is the quality factor Q value; or the first information is the total number of time units, and the second information is the product of the total number of time units and the Q value.

8. The method according to claim 6, characterized in that, the first signaling further includes third information, and the third information indicates at least one of the following; a channel of an uplink or a sidelink; a data rate and a modulation format for transmission on the uplink or the sidelink; Whether the pilot for uplink or sidelink transmission is an extended pilot.

9. The method according to claim 6, wherein, the number of the first time units is determined by at least one of the following, including: the number of the first time units indicated by the second device; the own capability of the first device; the coverage level of the first device.

10. The method according to claim 7, wherein, the first information is the total number of time units or the total number of time units to the power of 2, and the second information is the Q value; the determining the second serial number according to the first signaling includes: determining a third random number according to the first information, where the value range of the third random number is determined by the number of the first time units and the first information; using the third random number as the second serial number; the method further includes: determining a second random number according to the second information, and using the second random number as the threshold.

11. The method according to claim 7, wherein, the first information is the total number of time units, and the second information is the product of the total number of time units and the Q value; the determining the second serial number according to the first signaling includes: using the quotient of the first information and the number of the first time units as a first result; determining a fourth random number according to the second information; using the result of the modulo operation of the fourth random number and the first result as the second serial number.

12. The method according to claim 11, wherein, the method further includes: using the quotient of the fourth random number and the first result as the threshold.

13. The method according to claim 8, wherein, the first information is the total number of time units, and the second information is the Q value; the determining the second serial number according to the first signaling includes: determining the second serial number according to the first information and the third information.

14. The method according to claim 13, wherein, the method further includes: generating a fifth random number according to the second information, and using the fifth random number as the threshold.

15. A communication method, wherein, executed by a second device, the method includes: sending a first signaling to a first device, the first signaling including first information; wherein, the first information is information related to the total number of time units in a time unit set; the first signaling is used to instruct the first device to determine a first random number and a first serial number, and the first serial number is the serial number of the time unit for sending the first random number.

16. The method according to claim 15, wherein, the first signaling further includes second information; the first signaling is further used to instruct the first device to determine a threshold according to at least one of the first information and the second information; the threshold is the number of times of the second signaling to be received before sending the first random number to the second device; wherein, the second signaling is used to instruct the first device to enter the next transmission opportunity.

17. The method according to claim 16, wherein, the method further includes: sending the second signaling to the first device; receiving the first random number sent by the first device; Send a response message to the first device, where the response message is used to indicate that the first device has successfully accessed the channel.

18. The method according to claim 16, wherein, the first information is the total number of time units or 2 to the power of the total number of time units, and the second information is the Q value; or the first information is the total number of time units, and the second information is the product of the total number of time units and the Q value.

19. The method according to claim 15, wherein, the first signaling further includes third information, and the third information indicates at least one of the following; a channel of the uplink or sidelink; the data rate and modulation format transmitted on the uplink or sidelink; whether the pilot transmitted on the uplink or sidelink is an extended pilot.

20. The method according to claim 16, wherein, a second signaling includes an index value related to the total number of times of repeatedly sending the second signaling.

21. The method according to claim 16, wherein, the total number of time units is preset according to a protocol or determined according to the configuration of the second device.

22. The method according to claim 17, wherein, the first start time for the second device to receive the first random number of the first first device is later than the first end time for the second device to send the first signaling to the last first device, and the difference between the first start time and the first end time is not less than a first threshold value; the second end time for the second device to receive the first random number of the last first device is earlier than the second start time for the second device to send the response message to the first first device, and the difference between the second end time and the second start time is not less than a second threshold value.

23. A terminal device, wherein, a first device, comprising: a transceiver module: configured to receive a first signaling sent by a network device, where the first signaling includes first information; wherein, the first information is information related to the total number of time units in a time unit set; the first signaling is used to instruct the terminal device to determine a first random number and a first serial number, and the first serial number is the serial number of the time unit for sending the first random number.

24. A network device, wherein, a second device, comprising: a transceiver module: configured to send a first signaling to at least one terminal device, where the first signaling includes first information; wherein, the first information is information related to the total number of time units in a time unit set; the first signaling is used to instruct the terminal device to determine a first random number and a first serial number, and the first serial number is the serial number of the time unit for sending the first random number.

25. A communication device, wherein, comprising: one or more processors; wherein, the processor is configured to execute the communication method according to any one of claims 1 to 14.

26. A communication device, wherein, comprising: one or more processors; wherein, the processor is configured to execute the communication method according to any one of claims 15 to 22.

27. A communication system, wherein, comprising: A first device for implementing the communication method according to any one of claims 1-14; A second device for implementing the communication method according to any one of claims 15-22.

28. A storage medium storing instructions, wherein, when the instructions are run on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-14 and 15-22.

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