Information indication method, first device, second device, communication system and storage medium

Abstract

The embodiment of the invention provides an information indication method, first equipment, second equipment, a communication system and a storage medium. The method is executed by a first device, and comprises the following steps: sending first information to a second device; wherein the first information is used for indicating the second equipment to trigger the first equipment to transmit at least one piece of first data, and the first data is packet data. The communication mechanism of the technical scheme provided by the embodiment of the invention can be adapted to IoT equipment supporting environment power.

Description

Information indication method, first device, second device, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to an information indication method, a first device, a second device, a communication system, and a storage medium. Background Art

[0002] In the field of communication technology, an ambient-powered Internet of Things (IoT) device is an IoT device powered by energy harvesting. Its main feature is that it has no battery or has limited energy storage capacity (for example, using capacitors) and provides energy by harvesting radio waves, light, motion, heat or any other suitable power source.

[0003] Summary of the Invention

[0004] After the introduction of IoT devices that support ambient power, the communication mechanism needs to be adjusted.

[0005] Embodiments of the present disclosure provide an information indication method, a first device, a second device, a communication device, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided an information indication method, the method comprising:

[0007] sending the first information to the second device;

[0008] The first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0009] According to a second aspect of an embodiment of the present disclosure, there is provided an information indication method, the method comprising:

[0010] receiving first information sent by a first device;

[0011] Based on the first information, the first device is triggered to transmit at least one first data, where the first data is packet data.

[0012] According to a third aspect of an embodiment of the present disclosure, there is provided an information indication method, the method comprising:

[0013] The first device sends first information to the second device;

[0014] The first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0015] According to a fourth aspect of an embodiment of the present disclosure, a first device is provided, the first device including:

[0016] a transceiver module, configured to send first information to the second device;

[0017] The first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0018] According to a fifth aspect of an embodiment of the present disclosure, a second device is provided, the second device including:

[0019] a transceiver module, configured to receive first information sent by a first device;

[0020] The first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0021] According to the sixth aspect of an embodiment of the present disclosure, a communication system is provided, which includes a first device and a second device, wherein the first device is configured to implement the information indication method provided by the first aspect, and the second device is configured to implement the information indication method provided by the second aspect.

[0022] According to a seventh aspect of an embodiment of the present disclosure, a first device is provided, the first device including:

[0023] one or more processors;

[0024] The first device is used to execute the information indication method described in the first aspect.

[0025] According to an eighth aspect of an embodiment of the present disclosure, a second device is provided, the second device including:

[0026] one or more processors;

[0027] The second device is used to execute the information indication method described in the second aspect.

[0028] According to the ninth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the information indication method provided by the first aspect, the second aspect or the third aspect.

[0029] The communication mechanism of the technical solution provided by the embodiments of the present disclosure can be adapted to IoT devices that support ambient power.

[0030] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0032] FIG1a is a schematic diagram showing an architecture of a communication system according to an exemplary embodiment;

[0033] FIG1b is a schematic diagram showing backscattering according to an exemplary embodiment;

[0034] FIG1c is a schematic diagram showing an architecture according to an exemplary embodiment;

[0035] FIG1d is a schematic diagram of a device according to an exemplary embodiment;

[0036] FIG2a is a schematic flow chart showing an information indication method according to an exemplary embodiment;

[0037] FIG3a is a schematic flow chart showing an information indication method according to an exemplary embodiment;

[0038] FIG3 b is a schematic flow chart showing an information indication method according to an exemplary embodiment;

[0039] FIG4a is a schematic flow chart showing an information indication method according to an exemplary embodiment;

[0040] FIG4 b is a schematic flow chart showing an information indication method according to an exemplary embodiment;

[0041] FIG5a is a schematic flow chart showing an information indication method according to an exemplary embodiment;

[0042] FIG6a is a schematic structural diagram of a first device according to an exemplary embodiment;

[0043] FIG6b is a schematic structural diagram of a second device according to an exemplary embodiment;

[0044] FIG7a is a schematic structural diagram of a UE according to an exemplary embodiment;

[0045] Fig. 7b is a schematic structural diagram of a communication device according to an exemplary embodiment. DETAILED DESCRIPTION

[0046] Embodiments of the present disclosure provide an information indication method and apparatus, a communication device, a communication system, and a storage medium.

[0047] In a first aspect, an embodiment of the present disclosure provides an information indication method, the method being performed by a first device, the first device being an environmental Internet of Things device, the method comprising:

[0048] sending the first information to the second device;

[0049] The first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0050] In the above embodiment, since the first device sends the first information to the second device to instruct the second device to trigger the first device to transmit at least one first data, after receiving the first information, the second device can trigger the first device to send at least one first data based on the first information. In this way, the transmission of the first data will be more timely.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0052] Receive a first signal sent by the second device, where the first signal is sent by the second device according to the first information.

[0053] In the above embodiment, after receiving the first information, the second device may send a first signal to the first device according to the first information, and the first device may send first data using a reflected signal of the first signal.

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

[0055] The at least one first data is transmitted using a reflected transmission signal of the first signal.

[0056] In the above embodiment, after receiving the first signal, the first device may use the reflected transmission signal of the first signal to transmit the at least one first data.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following:

[0058] a first number, used to indicate a number of times the first device expects the second device to trigger the first device to transmit the first data;

[0059] A first interval time is used to indicate the time interval between two consecutive times when the second device triggers the first device to transmit the first data;

[0060] first indication information, used to indicate whether to expect the second device to trigger the first device to transmit the first data again;

[0061] The first data amount is used to indicate the amount of the first data to be transmitted.

[0062] In the above embodiment, since the first information includes at least one of the first quantity, the first interval time, the first indication information and the first data volume, after receiving the first information, the second device can more reasonably trigger the first device to transmit the first data based on the first method based on the first information, thereby making communication more reliable and efficient.

[0063] In conjunction with some embodiments of the first aspect, in some embodiments, sending the first information to the second device includes one of the following:

[0064] Sending the first information to the second device through a media access control MAC control element CE;

[0065] Sending the first information to the second device through a radio resource control RRC message;

[0066] The first information is sent to the second device through a MAC header of a media access control data packet unit MAC protocol data unit PDU.

[0067] In the above embodiment, since the first information can be sent by multiplexing the MAC header of MAC CE, RRC message and MAC PDU, compared with the method that requires additional setting of other dedicated signaling, signaling resources can be saved and resource utilization efficiency can be improved.

[0068] In combination with some embodiments of the first aspect, in some embodiments, the first information is carried in a MAC header of the MAC CE; or, the first information is carried in a MAC payload of the MAC CE.

[0069] In the above embodiment, the first information may be sent through the MAC header or MAC payload of the MAC CE, and the carrying method is more flexible.

[0070] In combination with some embodiments of the first aspect, in some embodiments, the first data is obtained based on the second data.

[0071] In the above embodiment, the first data can be obtained based on the second data.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0073] The second data packet is divided into at least two segments, each of which corresponds to one first data.

[0074] In the above embodiment, since the second data can be divided into at least two segments to obtain at least two first data, the first device can send data to the second device in units of first data.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, dividing the second data packet into at least two segments includes one of the following:

[0076] dividing the second data packet into at least two segments at a MAC layer of the first device;

[0077] The second data packet is divided into at least two segments at the RRC layer of the first device.

[0078] In the above embodiment, the second data may be divided into at least two segments at the MAC layer or at the RRC layer, and the location of dividing the second data may be more flexible.

[0079] In conjunction with some embodiments of the first aspect, in some embodiments, second information and / or third information is sent to the second device;

[0080] The second information indicates that the second data is divided into at least two segments at the MAC layer of the first device or the RRC layer of the first device; and the third information indicates that at least two of the segment packets belong to the second data.

[0081] In the above embodiment, since the second information indicates that the MAC layer of the first device or the RRC layer of the first device divides the second data into at least two segments, and the third information indicates that at least two of the segment packets belong to the second data, after the second device receives the first data, it can reassemble the first data into the second data.

[0082] In combination with some embodiments of the first aspect, in some embodiments, the third information includes a segment number, or the third information includes a group number, or the third information includes a segment number and a group number; the segment number is used to indicate the segment to which the small packet data belongs, and the group number is used to indicate the large data packet to which the segment belongs.

[0083] In the above embodiment, since the segment number indicates the segment to which the small packet data belongs, and the group number indicates the large data packet to which the segment belongs, the second device can reorganize the first data into the second data based on the segment number and / or the group number.

[0084] In combination with some embodiments of the first aspect, in some embodiments, the segment number and / or the group number is carried in a MAC header of a MAC CE.

[0085] In the above embodiment, the segment number and / or the group number may be carried by the MAC header of the MAC CE.

[0086] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes one of the following:

[0087] assigning a sequence number to each first data at a MAC layer of the first device, where the sequence number is used to indicate one first data;

[0088] A sequence number is assigned to each first data at the RRC layer of the first device, where the sequence number is used to indicate one first data.

[0089] In the above embodiment, a sequence number can be assigned to each first data at the MAC layer of the first device, or at the RRC layer of the first device. In this way, the method of assigning a sequence number to each first data is more flexible.

[0090] In conjunction with some embodiments of the first aspect, in some embodiments, fourth information is sent to the second device;

[0091] The fourth information indicates that a sequence number is assigned to the first data at a MAC layer of the first device or an RRC layer of the first device.

[0092] In the above embodiment, after receiving the fourth information, the second device can determine that a sequence number is assigned to the first data at the MAC layer of the first device or the RRC layer of the first device, and can sort the first data based on the sequence number.

[0093] In combination with some embodiments of the first aspect, in some embodiments, the sequence number is carried in a MAC header of a MAC CE or in RRC signaling.

[0094] In the above embodiment, the sequence number can be carried in the MAC header of the MAC CE or in the RRC signaling, and the carrying method is flexible.

[0095] In combination with some embodiments of the first aspect, in some embodiments, at least one of the segment number, group number and sequence number corresponding to the first data sent in a predetermined time window is used to determine whether the first data is the first data expected to be received, and / or, at least one of the segment number, group number and sequence number of the first data is used to obtain the second data by sorting and reorganizing.

[0096] In the above embodiment, after the second device receives at least one of the segment number, group number and sequence number within a predetermined time window, it can determine whether the first data is the first data expected to be received, and / or the second device can obtain the second data by sorting and reorganizing the first data based on at least one of the segment number, group number and sequence number.

[0097] In conjunction with some embodiments of the first aspect, in some embodiments, the second device is one of the following:

[0098] terminal;

[0099] relay;

[0100] Integrated access backhaul IAB;

[0101] In the above embodiment, in a second aspect, the present disclosure provides an information indication method, which is performed by a second device and includes:

[0102] receiving first information sent by a first device;

[0103] Based on the first information, the first device is triggered to transmit at least one first data, where the first data is packet data.

[0104] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0105] A first signal is sent to the second device, where the first signal is sent by the second device according to the first information.

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

[0107] The at least one first data transmitted by the first device using the reflected signal of the first signal is received.

[0108] In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes at least one of the following:

[0109] a first number, used to indicate a triggering number expected by the first device that the second device triggers the first device to transmit the first data;

[0110] A first interval time is used to indicate the time interval between two consecutive times when the second device triggers the first device to transmit the first data;

[0111] first indication information, used to indicate whether to expect the second device to trigger the first device to transmit the first data again;

[0112] The first data amount is used to indicate the amount of the first data to be transmitted.

[0113] In conjunction with some embodiments of the second aspect, in some embodiments, receiving the first information sent by the first device includes one of the following:

[0114] receiving, through the MAC CE, the first information sent by the first device;

[0115] Receiving the first information sent by the first device through an RRC message;

[0116] The first information sent by the first device is received through the MAC packet header of the MAC PDU.

[0117] In combination with some embodiments of the second aspect, in some embodiments, the first information is carried in the MAC header of the MAC CE; or, the first information is carried in the MAC payload of the MAC CE.

[0118] In combination with some embodiments of the second aspect, in some embodiments, the first data is obtained based on the second data.

[0119] In combination with some embodiments of the second aspect, in some embodiments, the second data is divided into at least two segments, and each segment corresponds to one first data.

[0120] In combination with some embodiments of the second aspect, in some embodiments, the second data is divided into at least two segments at the MAC layer or the RRC layer.

[0121] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0122] receiving second information and / or third information sent by the first device;

[0123] The second information indicates that the second data is divided into at least two segments at the MAC layer of the first device or the RRC layer of the first device; the third information indicates that at least two segments belong to the second data, and each segment corresponds to one first data.

[0124] In combination with some embodiments of the second aspect, in some embodiments, the third information includes a segment number, or the third information includes a group number, or the third information includes a segment number and a group number; the segment number is used to indicate the segment to which the first data belongs, and the group number is used to indicate the second data to which the segment belongs.

[0125] In combination with some embodiments of the second aspect, in some embodiments, the segment number and / or the group number is carried in a MAC header of a MAC CE.

[0126] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0127] Determine whether the packet data is the first data expected to be received based on at least one of the segment number, group number and sequence number corresponding to the first data received in a predetermined time window.

[0128] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0129] receiving fourth information sent by the first device;

[0130] The fourth information indicates that a sequence number is assigned to the first data at a MAC layer of the first device or an RRC layer of the first device.

[0131] In combination with some embodiments of the second aspect, in some embodiments, the sequence number is carried in the MAC header of the MAC CE or the RRC message.

[0132] In combination with some embodiments of the second aspect, in some embodiments, at least one of the segment number, group number and sequence number corresponding to the first data received in a predetermined time window is used to determine whether the first data is the first data expected to be received, and / or, at least one of the segment number, group number and sequence number of the first data is used to obtain the second data by sorting and reorganizing.

[0133] In conjunction with some embodiments of the second aspect, in some embodiments, the second device is one of the following:

[0134] terminal;

[0135] relay;

[0136] IAB;

[0137] Repeater.

[0138] In a third aspect, an embodiment of the present disclosure provides an information indication method, the method comprising:

[0139] The first device sends first information to the second device;

[0140] The first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0141] In a fourth aspect, an embodiment of the present disclosure provides a first device, the first device including:

[0142] a transceiver module, configured to send first information to the second device;

[0143] The first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

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

[0145] a transceiver module, configured to receive first information sent by a first device;

[0146] The processing module is configured to: trigger the first device to transmit at least one first data based on the first information, where the first data is small packet data.

[0147] In the sixth aspect, an embodiment of the present disclosure provides an information indication system, wherein the communication system includes a first device and a second device, the first device is configured to implement the information indication method described in the optional implementation manner of the first aspect, and the second device is configured to implement the information indication method described in the optional implementation manner of the second aspect.

[0148] In a seventh aspect, an embodiment of the present disclosure provides a first device, the first device including:

[0149] one or more processors;

[0150] Among them, the first device is used to execute the information indication method provided by the first aspect.

[0151] In an eighth aspect, an embodiment of the present disclosure provides a second device, the second device including:

[0152] one or more processors;

[0153] Among them, the second device is used to execute the information indication method provided by the second aspect.

[0154] In a ninth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when executed on a communication device, enable the communication device to execute the information indication method described in the optional implementation of the first and second aspects.

[0155] In a tenth 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.

[0156] In an eleventh 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.

[0157] In a twelfth 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.

[0158] 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.

[0159] The present disclosure provides an information indication method, a first device, a second device, a communication system, and a storage medium. In some embodiments, the information indication method, information processing method, information transmission method, and other terms are interchangeable, and the communication system, information processing system, and other terms are interchangeable.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0164] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0165] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0172] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0173] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0174] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0175] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0176] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0177] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0178] 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.

[0179] FIG1a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0180] As shown in FIG. 1 a , a communication system 100 includes a first device (eg, a terminal) 101 and a second device 102 .

[0181] In some embodiments, the first device 101 may be an ambient IoT device.

[0182] In some embodiments, the second device 102 may be a relay device, an integrated access backhaul (IAB) device, a UE, a repeater, and the like.

[0183] In some embodiments, the second device 102 may include at least one of the first device, an access network device, and a core network device.

[0184] In some embodiments, the first device 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) first device, an augmented reality (AR) first device, a wireless first device in industrial control, a wireless first device in self-driving, a wireless first device in remote medical surgery, a wireless first device in a smart grid, a wireless first device in transportation safety, a wireless first device in a smart city, and at least one of a wireless first device in a smart home, but is not limited thereto. In some embodiments, the access network device may be, for example, a node or device that accesses the first device to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0185] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0186] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0187] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0188] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0189] 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 a portion 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.

[0190] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0191] In some cases, IoT devices in IoT networks are often powered by traditional batteries with limited lifespans, negatively impacting user experience. The astronomical growth of IoT networks, coupled with the proliferation of IoT devices, has pushed maintenance expenses, including labor and battery costs, to a whole new level. Billions of traditional batteries are discarded each year, with only a small fraction effectively recycled, negatively impacting the Earth's ecosystem. Maintaining IoT network operations and replacing batteries can be extremely challenging in extreme environmental conditions. Battery-free IoT communications have been proposed to improve network performance and sustainability, expanding their application scenarios. Furthermore, battery-free communications are more environmentally friendly and safer for children and the elderly. Eliminating traditional batteries significantly reduces device size and cost, paving the way for a variety of new applications.

[0192] In some embodiments, in the era of the fifth generation mobile communication technology 5G, various low power wide area (LPWA) technologies have been developed, such as machine type communication (MTC), narrowband Internet of Things (NB-IoT), reduced capability (RedCap), etc., to meet the growing needs of vertical fields. These LPWA technologies achieve low cost, low power consumption and large-scale connectivity, which can meet the requirements of many applications. However, there are still many use cases and applications that cannot be solved in the following situations. First, devices driven by traditional batteries are not applicable, such as in extreme environmental conditions (such as high voltage, extremely high / low temperature, humid environment). Second, maintenance-free equipment is required (for example, there is no need to replace traditional batteries of the device). Finally, ultra-low complexity, very small device size / form factor (such as mm thickness), longer life cycle, etc. are required.

[0193] In some embodiments, ambient powered IoT is a promising technology that can address the unmet needs described above. An ambient powered IoT device is an IoT device that is powered by energy harvesting, either without a battery or with limited energy storage capabilities (e.g., using capacitors), by harvesting radio waves, light, motion, heat, or any other suitable power source.

[0194] In some embodiments, energy harvested from the environment can drive data transmission and wireless communications among sensor nodes. Current mainstream low-power IoT communication chips consume tens or even hundreds of milliwatts of power for both transmission and reception, while ambient energy harvesting only captures microwatts, making them inadequate for powering these nodes. Therefore, new wireless communication technologies are needed to reduce communication energy consumption to tens or even below ten microwatts. Backscatter communications, currently a mainstream approach, is a key technology for building a green, energy-efficient, and flexibly deployable future IoT, and a crucial means of achieving the "Intelligent Connection of Everything."

[0195] In some embodiments, please refer to Figure 1b. Backscatter communication is a modulation and transmission technology designed with extremely low power consumption, which utilizes the principle of backscattering of radio frequency signals. Backscatter communication was first proposed by Stockman. When the radio frequency signal reaches the surface of an object, a part of it will be reflected. The sending node adjusts the matching between the receiving antenna and the impedance according to the information to be sent, thereby enhancing the reflection of the incident radio frequency signal and modulating the perception data acquired by itself onto the reflected signal to complete the transmission of the data. This process is similar to that of a reflector. Compared with other communication technologies, backscatter communication does not require a complex radio frequency structure, reduces the use of devices such as power amplifiers, high-precision crystal oscillators, duplexers, and high-precision filters, and does not require complex baseband processing. Therefore, it can simplify terminal design and significantly reduce the cost of terminal nodes.

[0196] In some embodiments, backscatter communication has been widely used in Radio Frequency Identification (RFID) systems, resulting in numerous large-scale commercial applications. Its operating principle is that a receiver (typically an RFID reader) transmits a radio frequency excitation signal, activating a passive node (typically an RFID tag). The tag then uses backscatter communication to modulate its information onto the radio frequency signal. The reader then receives the reflected signal from the passive tag and demodulates it, achieving information transmission.

[0197] In some embodiments, RFID technology also has numerous drawbacks, such as limited coverage (the wireless signal experiences double-path fading during the round-trip communication process, resulting in high path loss and a short effective communication range), single-channel transmission, the need for strict tag alignment, and a lack of power control. RFID technology still has significant room for improvement in communication. Integration with 3GPP communication technologies is needed to improve the wireless communication performance of RFID technology in the passive IoT.

[0198] The expected new type of IoT devices have the characteristics of low memory, low processing power, low power consumption, small data transmission, and massive deployment. Environmental IoT devices can be maintenance-free and have a long service life (for example, more than 10 years).

[0199] These new IoT devices require energy from radio waves transmitted by network nodes to power themselves. Therefore, until they receive energy, they are typically powered off, meaning they are disconnected from the network. To address this, the communication system must support data communication methods with shorter transmission times, lower memory consumption, and more convenient terminal management to expedite data communication.

[0200] In some embodiments, see FIG1c, which shows a network architecture for wireless communication based on backscatter technology to achieve communication between ambient energy devices.

[0201] Architecture 1: Direct downlink (DL) and uplink (UL) data reception and transmission between ambient power IoT devices and base stations.

[0202] Architecture 2: DL and UL data reception and transmission are performed indirectly between the ambient IoT and the base station; intermediate nodes exist in the middle to forward data. For example, the intermediate nodes can be relays, integrated access backhaul (IAB), UEs, and repeaters.

[0203] Architecture 3: Ambient IoT and the base station directly transmit or receive data in the DL or UL. Auxiliary nodes are located on the UL or DL, responsible for receiving or sending UL or DL ​​data. Examples of auxiliary nodes include relays, IABs, UEs, and repeaters.

[0204] Architecture 4: Direct DL and UL data reception and transmission between ambient IoT and UE; UE is responsible for collecting data and forwarding it to the network.

[0205] In some embodiments, referring to FIG1d , Ambient IoT devices can be divided into three types:

[0206] Device A: No energy storage, no independent signal generation / amplification, i.e. backscatter transmission;

[0207] Device B: has energy storage but no independent signal generation, i.e., backscatter transmission. The use of stored energy may include amplification of the reflected signal.

[0208] Device C: has energy storage and independent signal generation, i.e., active RF components for transmission.

[0209] In some embodiments, the terminal supports small packet data transmission. In Long Term Evolution (LTE) Early Data Transmission (EDT), one-shot small packet data transmission is supported, i.e., small packet data transmission of only one data packet is supported. In New Radio (NR) Small Data Transmission (SDT), small packet data transmission of multiple consecutive packets is supported.

[0210] In some embodiments, small packet data transmission is based on an Orthogonal Frequency Division Multiplexing (OFDM) waveform and is scheduled by the network. The terminal reports a Buffer Status Report (BSR), allowing the base station to know the small packet data to be transmitted by the UE. The base station then schedules the transmission of small packets, enabling continuous small packet data transmission. In related technologies, the terminal is assumed to have power, meaning that battery level is not a factor affecting base station scheduling.

[0211] FIG2a is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG2a, the present disclosure embodiment relates to an information indication method, which is used in a communication system 100 and includes:

[0212] Step 2101: The first device sends first information to the second device.

[0213] In some embodiments, the second device receives the first information sent by the first device.

[0214] In some embodiments, the first information may be indication information.

[0215] In some embodiments, the first information is used to instruct the second device to trigger the first device to transmit at least one first data.

[0216] In some embodiments, the first data is packet data.

[0217] In some embodiments, the first information is used to instruct the second device to trigger the first device to transmit continuous small packet data based on the first method.

[0218] In some embodiments, the first information is used to instruct the second device to trigger the first device to transmit packet data based on the first method.

[0219] In some embodiments, the first information is used to instruct triggering the second device to send a first signal to the first device.

[0220] In some embodiments, the first signal may be an excitation signal.

[0221] In some embodiments, the first manner is a manner in which the first device uses ambient energy to send data.

[0222] In some embodiments, the first manner is a manner in which the first device sends data to the second device using a reflected signal of the first signal.

[0223] In some embodiments, the first device receives a first signal sent by the second device, where the first signal is sent by the second device according to the first information.

[0224] In some embodiments, at least one first data is transmitted using a reflected signal of the first signal.

[0225] In some embodiments, the first information includes at least one of the following:

[0226] a first number, used to indicate a number of times the first device expects the second device to trigger the first device to transmit the first data;

[0227] A first interval time is used to indicate the time interval between two consecutive times when the second device triggers the first device to transmit the first data;

[0228] first indication information, used to indicate whether to expect the second device to trigger the first device to transmit the first data again;

[0229] The first data amount is used to indicate the amount of the first data to be transmitted.

[0230] In some embodiments, the first information indicates the number of times the first device expects to trigger transmission of small packet data to achieve continuous transmission of small packet data.

[0231] In some embodiments, the trigger count may include the number of current triggers and / or the number of expected triggers after the current trigger.

[0232] In some embodiments, the first interval time is used as the minimum time interval between two consecutive times when the second device triggers the first device to transmit the first data.

[0233] In some embodiments, the first indication information may be indicated by an information field, which may include one bit (not limited to one bit). For example, when the bit value is "0", it indicates that the transmission of the packet data is not expected to be triggered again, and when the bit value is "1", it indicates that the transmission of the packet data is expected to be triggered again.

[0234] In some embodiments, the number of packet data to be transmitted may be X bytes.

[0235] In some embodiments, the first device sends the first information to the second device via a Media Access Control (MAC) Control Element (CE).

[0236] In some embodiments, the first device sends the first information to the second device via a Radio Resource Control (RRC) message.

[0237] In some embodiments, the first device sends the first information to the second device via a MAC header of a MAC protocol data unit (PDU). It should be noted that the PDU in the present disclosure may also be a packet data unit (PDU), and "packet data unit" and "protocol data unit" are interchangeable.

[0238] In some embodiments, the first information is carried in a MAC header of a MAC CE; or, the first information is carried in a MAC payload of a MAC CE.

[0239] In some embodiments, the first data is obtained based on second data.

[0240] In some embodiments, the second data may be a large data packet.

[0241] In some embodiments, the first device divides the second data into at least two segments, each segment corresponds to one first data, so that at least two first data can be obtained.

[0242] In some embodiments, the first device divides the second data into at least two segments at a MAC layer of the first device.

[0243] In some embodiments, the first device divides the second data into at least two segments at an RRC layer of the first device.

[0244] In some embodiments, the first device sends second information to the second device; wherein the second information indicates that the second data is divided into at least two segments at a MAC layer of the first device or an RRC layer of the first device.

[0245] In some embodiments, the first device sends third information to the second device; wherein the third information indicates that at least two of the segmented packets belong to the second data.

[0246] In some embodiments, the third information includes a segment number, or the third information includes a group number, or the third information includes a segment number and a group number; the segment number is used to indicate the segment to which the first data belongs, and the group number is used to indicate the second data to which the segment belongs.

[0247] In some embodiments, the segment number and / or group number is carried in the MAC header of the MAC CE.

[0248] In some embodiments, segmentation or packetization of the second data is performed at the MAC layer.

[0249] For example, the first device can divide the second data into three segments at the MAC layer, namely segment 1, segment 2, and segment 3. Segment 1, segment 2, and segment 3 can belong to the same group, and the segments within the group are the segments divided from the second data. Each segment can correspond to a segment number, and each group can correspond to a group number. Each segment can correspond to a piece of first data, and each group can correspond to a piece of second data. In this way, after knowing the segment number and group number, the second device can reassemble the corresponding first data into a piece of second data.

[0250] In some embodiments, at least one of the segment number and the group number corresponding to the first data sent in the predetermined time window is used by the second device to determine whether the first data is the first data expected to be received.

[0251] In some embodiments, at least one of the segment number and the group number of the first data is used by the second device to obtain the second data through sorting and reorganization.

[0252] It should be noted that the reason for the large data packet may be that a redundant repetition of the data stream to be transmitted is performed at the MAC layer or the RRC layer. The second device can indicate the number of redundant repetitions in the first signal, where the number of redundant repetitions can be fixed by the system or by the protocol.

[0253] In some embodiments, the first device assigns a sequence number to the first data at a MAC layer of the first device.

[0254] In some embodiments, the first device assigns a sequence number to the first data at an RRC layer of the first device.

[0255] In some embodiments, the first device sends fourth information to the second device; wherein the fourth information indicates that a sequence number is assigned to the first data at a MAC layer of the first device or an RRC layer of the first device.

[0256] In some embodiments, the sequence number corresponding to the first data sent in the predetermined time window is used by the second device to determine whether the first data is the first data expected to be received.

[0257] In some embodiments, the sequence number of the first data is used by the second device to obtain the second data through sorting and reassembly.

[0258] In some embodiments, at least one of the segment number, the group number, and the sequence number may be indicated by 2 bits.

[0259] Step 2102: The second device triggers the first device to transmit first data.

[0260] In some embodiments, the second device sends a first signal to the first device, and a reflected signal of the first signal is used by the first device to send first data to the second device.

[0261] In some embodiments, corresponding to one trigger, the second device sends a first signal to the first device once, and a reflected signal of the first signal is used by the first device to send first data to the second device once.

[0262] Step 2103: The first device sends first data.

[0263] In some embodiments, the first device receives a first signal sent by the second device, and the first device sends first data to the second device using a reflected signal of the first signal.

[0264] In some embodiments, corresponding to one trigger, the second device sends a first signal to the first device once, and the first device sends first data to the second device once using a reflected signal of the first signal.

[0265] In some embodiments, a relationship between a first index and the first quantity may be established for the first quantity. The first information may be reported to the second device by reporting the first index.

[0266] For example, see Table 1:

[0267] Table 1

[0268] In some embodiments, for the first interval, a relationship between the second index and the first interval can be established. The first information can be reported to the second device by reporting the second index.

[0269] For example, see Table 2:

[0270] Table 2

[0271] In some embodiments, a relationship between the third index and the first data volume may be established for the first data volume. The first information may be reported to the second device by reporting the third index.

[0272] For example, see Table 3:

[0273] Table 3

[0274] In some embodiments, the term "information" can be interchangeable with terms such as "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", and "data".

[0275] In some embodiments, the term "send" can be interchanged with terms such as "transmit", "report", and "transmit".

[0276] The information indication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2103. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, and step S2103 can be implemented as an independent embodiment. For example, step S2101 combined with step S2103 can be implemented as an independent embodiment, and step S2102 combined with step S2103 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0277] FIG3a is a flow chart of an information indication method according to an embodiment of the present disclosure. As shown in FIG3a, the present disclosure embodiment relates to an information indication method, which is executed by the first device 101 and includes:

[0278] Step S3101: Send the first information.

[0279] In some embodiments, the optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0280] Step S3102: Send first data.

[0281] In some embodiments, the optional implementation of step S3102 can refer to the optional implementation of step S2103 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0282] The information indication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3103. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, and step S3103 can be implemented as an independent embodiment. For example, step S3101 combined with step S3103 can be implemented as an independent embodiment, and step S3102 combined with step S3103 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0283] FIG3b is a flow chart of an information indication method according to an embodiment of the present disclosure. As shown in FIG3b , the present disclosure embodiment relates to an information indication method, which is executed by the first device 101 and includes:

[0284] Step S3201: Send the first information.

[0285] In some embodiments, the first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0286] In some embodiments, the optional implementation of step S3201 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0287] In some embodiments, the method further comprises:

[0288] Receive a first signal sent by the second device, where the first signal is sent by the second device according to the first information.

[0289] In some embodiments, the method further comprises:

[0290] The at least one first data is transmitted using a reflected signal of the first signal.

[0291] In some embodiments, the first information includes at least one of the following:

[0292] a first number, used to indicate a number of times the first device expects the second device to trigger the first device to transmit the first data;

[0293] A first interval time is used to indicate the time interval between two consecutive times when the second device triggers the first device to transmit the first data;

[0294] first indication information, used to indicate whether to expect the second device to trigger the first device to transmit the first data again;

[0295] The first data amount is used to indicate the amount of the first data to be transmitted.

[0296] In some embodiments, sending the first information to the second device includes one of the following:

[0297] Sending the first information to the second device through a media access control MAC control element CE;

[0298] Sending the first information to the second device through a radio resource control RRC message;

[0299] The first information is sent to the second device through a MAC header of a MAC protocol data unit (PDU).

[0300] In some embodiments, the first information is carried in a MAC header of the MAC CE; or, the first information is carried in a MAC payload of the MAC CE.

[0301] In some embodiments, the first data is obtained based on second data.

[0302] In some embodiments, the method further comprises:

[0303] The second data is divided into at least two segments, each segment corresponding to one of the first data.

[0304] In some embodiments, dividing the second data into at least two segments comprises one of the following:

[0305] dividing the second data into at least two segments at a MAC layer of the first device;

[0306] The second data is divided into at least two segments at the RRC layer of the first device.

[0307] In some embodiments, the method further comprises:

[0308] sending second information and / or third information to the second device;

[0309] The second information indicates that the second data is divided into at least two segments at the MAC layer of the first device or the RRC layer of the first device; and the third information indicates that at least two of the segment packets belong to the second data.

[0310] In some embodiments, the third information includes a segment number, or the third information includes a group number, or the third information includes a segment number and a group number; the segment number is used to indicate the segment to which the first data belongs, and the group number is used to indicate the second data to which the segment belongs.

[0311] In some embodiments, the segment number and / or the group number is carried in a MAC header of a MAC CE.

[0312] In some embodiments, the method further comprises one of the following:

[0313] assigning a sequence number to each first data at a MAC layer of the first device, where the sequence number is used to indicate one first data;

[0314] A sequence number is assigned to each first data at the RRC layer of the first device, where the sequence number is used to indicate one first data.

[0315] In some embodiments, the method further comprises:

[0316] sending fourth information to the second device;

[0317] The fourth information indicates that a sequence number is assigned to the first data at a MAC layer of the first device or an RRC layer of the first device.

[0318] In some embodiments, the sequence number is carried in a MAC header of a MAC CE or in an RRC message.

[0319] In some embodiments, at least one of the segment number, group number and sequence number corresponding to the first data sent in a predetermined time window is used to determine whether the first data is the first data expected to be received, and / or, at least one of the segment number, group number and sequence number of the first data is used to obtain the second data by sorting and reorganizing.

[0320] In some embodiments, the second device is one of the following:

[0321] terminal;

[0322] relay equipment;

[0323] Integrated access backhaul IAB equipment;

[0324] Repeater.

[0325] FIG4a is a flow chart of an information indication method according to an embodiment of the present disclosure. As shown in FIG4a , the present disclosure embodiment relates to an information indication method, which is executed by the second device 102 and includes:

[0326] Step S4101: Receive first information.

[0327] In some embodiments, the optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0328] In some embodiments, the second device receives the first information sent by the first device, but is not limited thereto and may also receive the first information sent by other entities.

[0329] In some embodiments, the second device obtains first information specified by the protocol.

[0330] In some embodiments, the second device obtains the first information from an upper layer(s).

[0331] In some embodiments, the second device performs processing to obtain the first information.

[0332] In some embodiments, step S4102 is omitted, and the first device autonomously implements the function indicated by the first information, or the above function is default or by default.

[0333] Step S4102: trigger the first device to transmit first data.

[0334] 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.

[0335] Step S4103: Receive first data.

[0336] The information indication method involved in the embodiments of the present disclosure may include at least one of steps S4101 to S4103. For example, step S4101 may be implemented as an independent embodiment, and step S4102 may be implemented as an independent embodiment. For example, step S4101 combined with step S4102 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0337] FIG4 b is a flow chart of an information indication method according to an embodiment of the present disclosure. As shown in FIG4 b , the present disclosure embodiment relates to an information indication method, which is executed by the second device 102 and includes:

[0338] Step S4201: receiving first information;

[0339] In some embodiments, the first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0340] In some embodiments, the second device triggers the first device to transmit at least one first data based on the first information, where the first data is packet data.

[0341] In some embodiments, the optional implementation of step S4201 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0342] In some embodiments, the method further comprises:

[0343] A first signal is sent to the second device, where the first signal is sent by the second device according to the first information.

[0344] In some embodiments, the method further comprises:

[0345] The at least one first data transmitted by the first device using the reflected signal of the first signal is received.

[0346] In some embodiments, the first information includes at least one of the following:

[0347] a first number, used to indicate a triggering number expected by the first device that the second device triggers the first device to transmit the first data;

[0348] A first interval time is used to indicate the time interval between two consecutive times when the second device triggers the first device to transmit the first data;

[0349] first indication information, used to indicate whether to expect the second device to trigger the first device to transmit the first data again;

[0350] The first data amount is used to indicate the amount of the first data to be transmitted.

[0351] In some embodiments, the receiving the first information sent by the first device includes one of the following:

[0352] receiving, through the MAC CE, the first information sent by the first device;

[0353] Receiving the first information sent by the first device through an RRC message;

[0354] The first information sent by the first device is received through the MAC packet header of the MAC PDU.

[0355] In some embodiments, the first information is carried in a MAC header of the MAC CE; or, the first information is carried in a MAC payload of the MAC CE.

[0356] In some embodiments, the first data is obtained based on second data.

[0357] In some embodiments, the second data is divided into at least two segments, and each segment corresponds to one first data.

[0358] In some embodiments, the second data is divided into at least two segments at the MAC layer or the RRC layer.

[0359] In some embodiments, the method further comprises:

[0360] receiving second information and / or third information sent by the first device;

[0361] The second information indicates that the second data is divided into at least two segments at the MAC layer of the first device or the RRC layer of the first device; the third information indicates that at least two segments belong to the second data, and each segment corresponds to one first data.

[0362] In some embodiments, the third information includes a segment number, or the third information includes a group number, or the third information includes a segment number and a group number; the segment number is used to indicate the segment to which the first data belongs, and the group number is used to indicate the second data to which the segment belongs.

[0363] In some embodiments, the segment number and / or the group number is carried in a MAC header of a MAC CE.

[0364] In some embodiments, the method further comprises:

[0365] Determine whether the packet data is the first data expected to be received based on at least one of the segment number, group number and sequence number corresponding to the first data received in a predetermined time window.

[0366] In some embodiments, the method further comprises:

[0367] receiving fourth information sent by the first device;

[0368] The fourth information indicates that a sequence number is assigned to the first data at a MAC layer of the first device or an RRC layer of the first device.

[0369] In some embodiments, the sequence number is carried in a MAC header of a MAC CE or an RRC message.

[0370] In some embodiments, at least one of the segment number, group number and sequence number corresponding to the first data received in a predetermined time window is used to determine whether the first data is the first data expected to be received, and / or, at least one of the segment number, group number and sequence number of the first data is used to obtain second data by sorting and reorganizing.

[0371] In some embodiments, the second device is one of the following:

[0372] terminal;

[0373] relay equipment;

[0374] IAB equipment;

[0375] Repeater.

[0376] Figure 5a is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in Figure 5a, the present disclosure embodiment relates to an information indication method, which is used in a communication system 100 and includes one of the following steps:

[0377] Step S5101: The first device sends first information to the second device;

[0378] In some embodiments, the first information is used to instruct the second device to trigger the first device to transmit at least one first data, where the first data is packet data.

[0379] The optional implementation of step S5101 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0380] In some embodiments, the above method may include the methods of the above embodiments on the communication system side, the first device side, the network device side, etc., which will not be repeated here.

[0381] The embodiments of the present disclosure relate to an information indication method. To better understand the technical solution of the present disclosure, the following three exemplary embodiments further illustrate the technical solution of the present disclosure:

[0382] Example 1:

[0383] In some embodiments, the terminal capability provides auxiliary information (corresponding to the first information in this disclosure) to assist the base station in triggering the excitation signal (corresponding to the first signal in this disclosure) to achieve continuous packet data transmission. Exemplarily, the following three solutions are included:

[0384] Option 1: Ambient IoT indicates the number of times the base station expects the ambient IoT to trigger in order to achieve continuous small packet data transmission. The expected number of ambient IoT triggers can include the current trigger or the expected number of triggers after the current trigger. Optionally, the ambient IoT further indicates the minimum time interval between each trigger.

[0385] Option 2: Ambient IOT indicates to the base station whether the ambient IOT is expected to trigger again, for example, a 1-bit indication. 0 indicates no expectation of re-triggering, while 1 indicates expectation of re-triggering. Optionally, the ambient IOT further indicates the minimum interval between each trigger, i.e., the interval from the start of the current trigger to the next trigger, or the interval from the start of the current transmission to the next trigger.

[0386] Option 3: Ambient IOT indicates the amount of data to be sent by the base station, i.e., X bytes. Optionally, ambient IOT further indicates the minimum time interval between each trigger.

[0387] For the above three solutions, the indication information can be included in a MAC CE, or in a MAC header, or in RRC signaling, which carries the data to be sent.

[0388] Example 2:

[0389] In some embodiments, multi-packet data transmission is due to the segmentation of large data packets. Exemplarily, there are two solutions:

[0390] Option 1: Segmentation or grouping of reported data (corresponding to the packet data in this disclosure) is performed at the MAC layer, and the MAC header contains the segment number or group number of the segment or group, and / or an indication information, which is used to indicate that all segments belong to one data report.

[0391] Option 2: Segmentation or grouping of reported data is performed at the RRC layer. The RRC signaling includes a segment number or group number of the segment or group, and / or an indication information, where the indication information is used to indicate that all segments belong to one data report.

[0392] For Option 1 and 2, the segment number or group number is also used to identify the newness or order of the data. The indication information can be a 1-bit or 2-bit integer value, because ambient IoT data is not large.

[0393] The reason for the large data packet may be that a redundant repetition of the data stream to be transmitted is performed at the MAC layer or RRC layer. The base station indicates the number of redundant repetitions of ambient IoT in the excitation signal, or the number of redundant repetitions is fixed by the system or protocol.

[0394] Example 3:

[0395] In some embodiments, multi-packet data transmission is because it contains multiple data packets. Exemplarily, the following two solutions are included:

[0396] Option 1: The sequence number of the reported data is assigned and added at the MAC layer, and reordering is performed at the MAC layer of the receiving end. The MAC header contains the sequence number.

[0397] Option 2: The sequence number of the reported data is assigned and added at the RRC layer, and reordering is performed at the RRC layer of the receiving end. The sequence number is included in the RRC signaling.

[0398] For options 1 and 2, the sequence number is also used to identify the newness or order of data. The sequence number can be a 2-bit integer value, considering that ambient IoT data is not large.

[0399] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0400] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0401] The disclosed embodiments address passive IoT terminals. Different terminal types and capacitor sizes can affect the terminal's data transmission capabilities and the intervals between data transmissions. The disclosed embodiments define the terminal's data transmission capabilities and report them to the network, assisting the network in effectively triggering the terminal to report data.

[0402] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a device in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0403] 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 single 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, where 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.

[0404] 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.

[0405] Figure 6a is a schematic structural diagram of the first device proposed in an embodiment of the present disclosure. As shown in Figure 6a, the first device 7100 may include: at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the transceiver module is used to send the first information. Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (such as step S2101, but not limited to this) performed by the first device 101 in any of the above methods, which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps performed by the first device 101 in any of the above methods, which will not be repeated here.

[0406] Figure 6b is a schematic diagram of the structure of the second device proposed in an embodiment of the present disclosure. As shown in Figure 6b, the second device 7200 may include: at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the above-mentioned transceiver module is used to send the first information. Optionally, the above-mentioned transceiver module is used to perform at least one of the communication steps such as sending and / or receiving (for example, step S2101, but not limited to this) performed by the first device 101 in any of the above methods, which will not be repeated here. In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated together. Optionally, the transceiver module can be interchangeable with the transceiver. Optionally, the above-mentioned processing module is used to perform at least one of the other steps (for example, step S2102) performed by the second device 102 in any of the above methods, which will not be repeated here.

[0407] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0408] 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.), a first device (e.g., a user device, etc.), a chip, a chip system, or a processor that supports a network device in implementing any of the above methods, or a chip, a chip system, or a processor that supports a first device in 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.

[0409] 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 communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a first device, a first device chip, a DU or CU, etc.), execute programs, and process program data. The communication device 8100 is used to perform any of the above methods.

[0410] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may be located outside the communication device 8100.

[0411] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101 and step S2102, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, step S2102).

[0412] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0413] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102. The interface circuit 8104 may be configured to receive signals from the memory 8102 or other devices, and may be configured to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0414] The communication device 8100 described in the above embodiment may be a network device or a first device, 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 first device device, an intelligent first device 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.

[0415] FIG7 b 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 FIG7 b , but the present disclosure is not limited thereto.

[0416] The chip 8200 includes one or more processors 8201 , and the chip 8200 is configured to execute any of the above methods.

[0417] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

[0418] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S3101, but not limited to this), and the processor 8201 performs at least one of the other steps (for example, step S2101, step S2102, but not limited to this).

[0419] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0420] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0421] 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.

[0422] 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.

[0423] 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. An information indication method, characterized in that: The method is performed by a first device, the first device is an environmental Internet of Things device, and the method includes: Sending the first information to the second device; The first information is used to instruct the second device to trigger the first device to transmit at least one first data, and the first data is small packet data.

2. The method according to claim 1, characterized in that: The method further comprises: A first signal is received from the second device, where the first signal is sent by the second device according to the first information.

3. The method according to claim 2, characterized in that The method further comprises: The at least one first data is transmitted using a reflected signal of the first signal.

4. The method according to any one of claims 1 to 3, characterized in that The first information includes at least one of the following: a first number, used to indicate a triggering number of times that the first device expects the second device to trigger the first device to transmit the first data; A first interval time is used to indicate a time interval between two consecutive times when the second device triggers the first device to transmit the first data; first indication information, used to indicate whether it is expected that the second device will trigger the first device to transmit the first data again; The first data amount is used to indicate the amount of the first data to be transmitted.

5. The method according to any one of claims 1 to 4, characterized in that The sending the first information to the second device includes one of the following: Sending the first information to the second device through a media access control MAC control unit CE; Sending the first information to the second device through a radio resource control RRC message; The first information is sent to the second device through a MAC header of a MAC protocol data unit PDU.

6. The method according to any one of claims 1 to 5, characterized in that The first information is carried in a MAC header of the MAC CE; or, the first information is carried in a MAC payload of the MAC CE.

7. The method according to any one of claims 1 to 6, characterized in that The first data is obtained based on the second data.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The second data is divided into at least two segments, each of which corresponds to one of the first data.

9. The method according to any one of claims 8, characterized in that The step of dividing the second data into at least two segments comprises one of the following: Dividing the second data into at least two segments at a MAC layer of the first device; The second data is divided into at least two segments at the RRC layer of the first device.

10. The method according to any one of claims 8 to 9, characterized in that: The method further comprises: Sending second information and / or third information to the second device; The second information indicates that the second data is divided into at least two segments at the MAC layer of the first device or the RRC layer of the first device; and the third information indicates that at least two of the segment packets belong to the second data.

11. The method according to any one of claims 10, characterized in that The third information includes a segment number, or the third information includes a group number, or the third information includes a segment number and a group number; the segment number is used to indicate the segment to which the first data belongs, and the group number is used to indicate the second data to which the segment belongs.

12. The method according to any one of claims 1 to 11, characterized in that The segment number and / or the group number is carried in the MAC header of the MAC CE.

13. The method according to any one of claims 1 to 12, characterized in that The method further comprises one of the following: assigning a sequence number to each first data at a MAC layer of the first device, where the sequence number is used to indicate one first data; A sequence number is assigned to each first data at the RRC layer of the first device, where the sequence number is used to indicate one first data.

14. The method according to any one of claims 1 to 13, characterized in that The method further comprises: sending fourth information to the second device; The fourth information indicates that a sequence number is assigned to the first data at a MAC layer of the first device or an RRC layer of the first device.

15. The method according to any one of claims 13-14, characterized in that The sequence number is carried in the MAC header of the MAC CE or in the RRC message.

16. The method according to claim 11 or 13, characterized in that: At least one of the segment number, group number and sequence number corresponding to the first data sent in a predetermined time window is used to determine whether the first data is the first data expected to be received, and / or, at least one of the segment number, group number and sequence number of the first data is used to obtain the second data by sorting and reorganizing.

17. The method according to any one of claims 1 to 16, characterized in that The second device is one of the following: terminal; Relay equipment; Integrated access backhaul IAB equipment; Repeater.

18. An information indication method, characterized in that: The method is performed by a second device, and includes: Receiving first information sent by a first device; Based on the first information, the first device is triggered to transmit at least one first data, where the first data is small packet data.

19. The method according to claim 18, characterized in that The method further comprises: A first signal is sent to the second device, where the first signal is sent by the second device according to the first information.

20. The method according to claim 19, characterized in that The method further comprises: The at least one first data transmitted by the first device using the reflected signal of the first signal is received.

21. The method according to any one of claims 18 to 20, characterized in that The first information includes at least one of the following: A first number, used to indicate a triggering number of times that the first device expects the second device to trigger the first device to transmit the first data; A first interval time is used to indicate a time interval between two consecutive times when the second device triggers the first device to transmit the first data; first indication information, used to indicate whether it is expected that the second device will trigger the first device to transmit the first data again; The first data amount is used to indicate the amount of the first data to be transmitted.

22. The method according to any one of claims 18 to 20, characterized in that The receiving the first information sent by the first device includes one of the following: Receiving, through the MAC CE, the first information sent by the first device; Receiving the first information sent by the first device through an RRC message; The first information sent by the first device is received through the MAC packet header of the MAC PDU.

23. The method according to any one of claims 18 to 22, characterized in that The first information is carried in a MAC header of the MAC CE; or, the first information is carried in a MAC payload of the MAC CE.

24. The method according to any one of claims 18 to 23, characterized in that The first data is obtained based on the second data.

25. The method according to claim 24, characterized in that The second data is divided into at least two segments, and each segment corresponds to one first data.

26. The method according to claim 25, characterized in that The second data is divided into at least two segments at the MAC layer or the RRC layer.

27. The method according to any one of claims 18 to 26, characterized in that The method further comprises: receiving second information and / or third information sent by the first device; The second information indicates that the second data is divided into at least two segments at the MAC layer of the first device or the RRC layer of the first device; the third information indicates that at least two segments belong to the second data, and each segment corresponds to one first data.

28. The method according to claim 27, characterized in that The third information includes a segment number, or the third information includes a group number, or the third information includes a segment number and a group number; the segment number is used to indicate the segment to which the first data belongs, and the group number is used to indicate the second data to which the segment belongs.

29. The method according to claim 28, characterized in that The segment number and / or the group number is carried in the MAC header of the MAC CE.

30. The method according to any one of claims 28 or 29, characterized in that The method further comprises: Based on at least one of the segment number, group number and sequence number corresponding to the first data received in a predetermined time window, it is determined whether the packet data is the first data expected to be received.

31. The method according to any one of claims 18 to 30, characterized in that The method further comprises: receiving fourth information sent by the first device; The fourth information indicates that a sequence number is assigned to the first data at a MAC layer of the first device or an RRC layer of the first device.

32. The method according to claim 31, characterized in that The sequence number is carried in the MAC header of the MAC CE or in the RRC message.

33. The method according to claim 28 or 32, characterized in that: At least one of the segment number, group number and sequence number corresponding to the first data received in a predetermined time window is used to determine whether the first data is the first data expected to be received, and / or, at least one of the segment number, group number and sequence number of the first data is used to obtain second data by sorting and reorganizing.

34. The method according to any one of claims 18 to 33, characterized in that The second device is one of the following: terminal; Relay equipment; IAB equipment; Repeater.

35. An information indication method, characterized in that: The method comprises: The first device sends first information to the second device; The first information is used to instruct the second device to trigger the first device to transmit at least one first data, and the first data is small packet data.

36. A first device, characterized in that: The first device comprises: a transceiver module, configured to send first information to a second device; The first information is used to instruct the second device to trigger the first device to transmit at least one first data, and the first data is small packet data.

37. A second device, characterized in that: The second device comprises: A transceiver module, configured to receive first information sent by a first device; The processing module is configured to: based on the first information, trigger the first device to transmit at least one first data, where the first data is small packet data.

38. A communication system, characterized in that: The information indication system includes a first device and a second device; the first device is configured to implement the information indication method described in any one of claims 1 to 17, and the second device is configured to implement the information indication method described in any one of claims 18 to 34.

39. A first device, characterized in that: The first device comprises: one or more processors; The first device is used to execute the information indication method according to any one of claims 1 to 17.

40. A second device, wherein: The second device comprises: one or more processors; The second device is used to execute the information indication method described in any one of claims 18 to 34.

41. A storage medium, wherein: The storage medium stores instructions, and when the instructions are executed on the communication device, the communication device executes the communication method according to any one of claims 1 to 17 and claims 18 to 34.

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