Information transmission method and apparatus, and storage medium

Abstract

Provided in the embodiments of the present disclosure are an information transmission method and apparatus, and a storage medium. The information transmission method comprises: sending first information to a second node, wherein the first information comprises cell information.

Description

Information transmission method, device, and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202410094632.2, filed on January 22, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technologies, and in particular to an information transmission method, device, and storage medium. Background Art

[0003] Currently, as the coverage area of ​​passive IoT devices increases, passive IoT devices often receive irrelevant commands sent by other cells, resulting in incorrect responses or transmission resource collisions, reducing the communication efficiency of passive IoT devices.

[0004] Summary of the Invention

[0005] In one aspect, an information transmission method is provided, which is applied to a first node. The information transmission method includes: sending first information to a second node, where the first information includes cell information.

[0006] In another aspect, an information transmission device is provided, which includes: a sending unit configured to send first information to a second node, where the first information includes cell information.

[0007] In another aspect, an information transmission method is provided, which is applied to a second node. The information transmission method includes: receiving first information sent by a first node, where the first information includes cell information.

[0008] In another aspect, an information transmission device is provided, including: a receiving unit configured to receive first information sent by a first node, wherein the first information includes cell information.

[0009] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store a computer program; and the processor implements the information transmission method described in any of the above aspects when executing the computer program.

[0010] In another aspect, a computer-readable storage medium is provided, wherein computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are executed by a processor, the information transmission method described in any one of the above aspects is implemented.

[0011] In another aspect, a computer program product is provided, which includes computer program instructions, and when the computer program instructions are executed by a processor, the information transmission method described in any one of the above aspects is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings.

[0013] FIG1 is a schematic diagram of a passive Internet of Things communication system according to some embodiments of the present disclosure.

[0014] FIG2 is a schematic diagram of a direct connection between a passive IoT device and a base station according to some embodiments of the present disclosure.

[0015] FIG3 is a system architecture diagram according to some embodiments of the present disclosure.

[0016] FIG4 is a flowchart illustrating a four-step random access method according to some embodiments of the present disclosure.

[0017] FIG5 is a schematic flow chart of a two-step random access method according to some embodiments of the present disclosure.

[0018] FIG6 is a flowchart illustrating a random access process for passive IoT communication according to some embodiments of the present disclosure.

[0019] FIG7 is a flowchart of an information transmission method according to some embodiments of the present disclosure.

[0020] FIG8 is a schematic diagram of dividing sub-cells according to some embodiments of the present disclosure.

[0021] FIG9 is a flowchart of another information transmission method according to some embodiments of the present disclosure.

[0022] FIG10 is a flowchart of another information transmission method according to some embodiments of the present disclosure.

[0023] FIG11 is a flowchart of another information transmission method according to some embodiments of the present disclosure.

[0024] FIG12 is a schematic diagram showing a case where the first node is an intermediate node according to some embodiments of the present disclosure.

[0025] FIG13 is a schematic diagram of a case where the first node is an auxiliary node according to some embodiments of the present disclosure.

[0026] FIG14 is a schematic diagram of an information format in which first information is carried via a MAC PDU header or a MAC PDU subheader according to some embodiments of the present disclosure.

[0027] FIG15 is a schematic diagram of an information format in which first information is carried via a MAC subPDU / MAC SDU according to some embodiments of the present disclosure.

[0028] Figure 16 is a schematic diagram of carrying first information through a MAC PDU header and MAC subPDU / MAC SDU according to some embodiments of the present disclosure.

[0029] FIG17 is a schematic structural diagram of an information format according to some embodiments of the present disclosure.

[0030] FIG18 is a schematic structural diagram of another information format according to some embodiments of the present disclosure.

[0031] FIG19 is a structural diagram of yet another information format according to some embodiments of the present disclosure.

[0032] FIG20 is a schematic structural diagram of yet another information format according to some embodiments of the present disclosure.

[0033] FIG21 is a structural diagram of transmitting cell information through a control command according to some embodiments of the present disclosure.

[0034] FIG22 is a schematic structural diagram of transmitting cell information through data to be transmitted according to some embodiments of the present disclosure.

[0035] FIG23 is a schematic structural diagram of another method for transmitting cell information through data to be transmitted according to some embodiments of the present disclosure.

[0036] FIG24 is a schematic structural diagram of transmitting cell information through a synchronization sequence according to some embodiments of the present disclosure.

[0037] Figure 25 is a structural diagram of an information format for transmitting first cell information and second cell information according to some embodiments of the present disclosure.

[0038] Figure 26 is a structural diagram of another information format for transmitting first cell information and second cell information according to some embodiments of the present disclosure.

[0039] Figure 27 is a structural diagram of an information format for transmitting cell information through CRC bits of data to be transmitted according to some embodiments of the present disclosure.

[0040] Figure 28 is a structural diagram of an information format for transmitting cell information through CRC bits of a control command according to some embodiments of the present disclosure.

[0041] FIG29 is a flowchart of another information transmission method according to some embodiments of the present disclosure.

[0042] FIG30 is a schematic structural diagram of a communication device according to some embodiments of the present disclosure.

[0043] FIG31 is a schematic structural diagram of another communication device according to some embodiments of the present disclosure.

[0044] FIG32 is a schematic structural diagram of another communication device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0045] To help those skilled in the art better understand the technical solutions of the embodiments of the present disclosure, the technical solutions of the present disclosure will be clearly and completely described below in conjunction with the drawings in the present disclosure. Obviously, the embodiments described are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0046] It should be noted that in this disclosure, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this disclosure as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0047] In the following, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Therefore, a feature defined with the terms "first," "second," etc., may explicitly or implicitly include one or more of such features.

[0048] In the description of this disclosure, unless otherwise specified, " / " means "or." For example, A / B can mean A or B. "And / or" herein is merely a description of an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: only A, only B, and both A and B. Furthermore, "at least one" means one or more, and "a plurality" means two or more.

[0049] To facilitate understanding of the technical solutions provided by the embodiments of the present disclosure, a brief introduction to some of the technologies disclosed is first given. The brief introduction is as follows:

[0050] 1. Passive Internet of Things communication system.

[0051] The passive IoT communication system may include an electronic device, a passive IoT data transmitting device, and a passive IoT data receiving device. The passive IoT data receiving device may receive data sent by the passive IoT data transmitting device and transmit the data to the electronic device.

[0052] Figure 1 shows a schematic diagram of a passive IoT communication system. As an example, assuming the passive IoT communication system is a radio frequency identification (RFID) system, the passive IoT data receiving device can be a radio frequency identification (RFID) reader / writer, the passive IoT data transmitting device can be an RFID tag, and the electronic device can be a computer. The RFID reader / writer can exchange data with the RFID tag via radio waves, and the RFID reader / writer ultimately transmits the data to the computer. This entire process does not require receiving cell commands, and therefore does not require identifying cell identifiers.

[0053] Figure 1 mainly introduces the communication between passive IoT devices. As the coverage area of ​​passive IoT devices continues to increase, passive IoT devices can also be directly connected to base stations. Figure 2 shows a schematic diagram of a passive IoT device directly connected to a base station. When the passive IoT device is directly connected to the base station, the passive IoT device can move from the current cell to other cells. If the passive IoT device does not update the cell information of the cell where it is located, the source cell (i.e., the cell that the passive IoT device accessed before moving) will not be able to identify (also called inventory) the device, and the target cell (i.e., the cell where the passive IoT device is located after moving) will not be able to identify the device. In addition, the passive IoT device may receive inventory commands from different cells, which will cause the transmission resources of the commands of different cells to collide, thereby reducing the working efficiency of the passive IoT device.

[0054] 2. Random access process.

[0055] After a terminal moves from another cell into the coverage area of ​​a base station, it needs to access the base station. The terminal can access the base station through random access. In fifth-generation mobile communication technology (5G), the random access process can be divided into contention-based random access and contention-free random access. The following mainly describes the contention-based random access process.

[0056] In a contention-based random access process, without pre-configured pilot sequences and / or reference signals, multiple terminals randomly select a sequence from a pool of candidate sequences to initiate random access. The terminal that wins the contention resolution process then establishes uplink synchronization with the base station. Contention-based random access processes include four-step random access and two-step random access.

[0057] Figure 4 shows a schematic flow chart of a four-step random access method. As shown in Figure 4, the four-step random access method includes S401-S404.

[0058] S401. The terminal sends a pilot sequence to the base station.

[0059] S402: The base station feeds back a random access response message to the terminal.

[0060] S403: The terminal sends a Msg3 (Message 3) message to the base station.

[0061] S404: The base station sends a Msg4 (Message 4) message to the terminal.

[0062] Msg3 and Msg4 are messages used for conflict resolution.

[0063] Figure 5 shows a schematic flow chart of a two-step random access method. As shown in Figure 5, the two-step random access method includes S501 and S502.

[0064] S501. The terminal sends a MsgA message to the base station.

[0065] The MsgA message may include a pilot sequence and data.

[0066] S502: The base station sends a MsgB message to the terminal.

[0067] However, in the passive IoT communication scenario, the random access process of passive IoT communication is different from the random access process of 5G communication.

[0068] Figure 6 shows a schematic flow chart of a random access process for passive Internet of Things communication. As shown in Figure 6, the random access process for passive Internet of Things communication includes S601-S604.

[0069] S601. The base station sends an inventory command to the passive IoT device.

[0070] The passive IoT device may be a passive IoT device. The inventory command may also be called an inventory command.

[0071] S602: The passive IoT device sends a random sequence to the base station.

[0072] The random sequence may be a serial number or an identifier of a passive IoT device.

[0073] S603: The base station receives the random sequence and returns a command confirmation message (acknowledgment, ACK) to the passive IoT device.

[0074] S604: The passive Internet of Things device sends device information of the passive Internet of Things device to the base station.

[0075] The device information can be the product code of a passive IoT device or information related to inventory.

[0076] After receiving the device information from the passive IoT device, the base station completes the random access process. The passive IoT device sends a random sequence to the base station, and the base station sends an ACK message, which is a conflict resolution operation. If the base station detects a conflict when sending an ACK message to the passive IoT device, it will repeatedly send the inventory command until no conflict occurs. If the device information received by the base station is invalid, the base station returns a negative acknowledgement (NACK) message to the passive IoT device and repeats the inventory command until no conflict occurs.

[0077] After successful random access, passive IoT devices can transmit data with the base station. During data transmission, fixed frame structure signals are typically used to send and receive information. A frame structure consists of a frame header, data, and a frame trailer. The frame header and frame trailer are fixed bit sequences or high- and low-level signals. The frame header can be used to determine the start of a signal, and the frame trailer can be used to determine the end of a signal, thereby determining the information transmission duration and number of data symbols for the frame structure signal. Because the current frame structure signal does not include the cell information of the cell where the second node is located, the passive IoT device cannot identify the correct command based on this cell information. As a result, the passive IoT device often receives irrelevant commands sent by other cells, responding incorrectly or causing transmission resource collisions, reducing the communication efficiency of the passive IoT device.

[0078] Currently, as the coverage area of ​​passive IoT communication devices increases, passive IoT devices often receive irrelevant commands sent by other cells, resulting in erroneous responses or transmission resource collisions, reducing the communication efficiency of passive IoT devices.

[0079] To address the aforementioned technical issues, embodiments of the present disclosure provide an information transmission method in which a first node can transmit first information including cell information to a second node. This allows the second node to identify information transmitted by its own cell based on the cell information, thereby avoiding receiving irrelevant commands from other cells and improving communication efficiency for passive IoT devices.

[0080] The information transmission method provided by the embodiment of the present disclosure may be applied to the communication system as shown in FIG3 . As shown in FIG3 , the communication system includes: a first node 301 and a second node 302 .

[0081] A first node 301 is in communication with a second node 302. The first node 301 can be any of the following: a base station, an auxiliary node, or an intermediate node. The second node 302 can be any of the following: a passive IoT device, a user equipment (UE), or a terminal. Figure 3 illustrates this using an example where the first node 301 is a base station and the second node 302 is a terminal.

[0082] In the embodiments of the present disclosure, first node 301 may send first information including cell information to second node 302. Second node 302 may receive the first information including cell information sent by first node 301. Because the cell information is the cell information of the cell in which second node 302 is located, second node 302 may determine that the received information is correct based on this cell information. In this way, second node 302 may avoid receiving information from other cells, thereby improving communication efficiency.

[0083] The cell information may include a cell identity document (ID) and the like.

[0084] It should be noted that FIG3 is only an exemplary framework diagram. The number of devices included in FIG3 and the names of the devices are not limited. In addition to the devices shown in FIG3, the communication system may also include other devices, such as repeaters and readers.

[0085] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will appreciate that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are equally applicable to similar technical problems.

[0086] The information transmission method provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0087] The information transmission method provided in the embodiment of the present disclosure can be applied to the first node 301 in the communication system shown in Figure 3. Figure 7 shows a flow chart of an information transmission method. As shown in Figure 7, the information transmission method includes the following S701.

[0088] S701: A first node sends first information to a second node.

[0089] The first information includes cell information. The cell information may be one or more of a cell identifier, a physical layer cell group number, a physical layer cell number, a sub-cell number (also referred to as a new cell number), a security cell identifier, or a public land mobile network cell identifier, and is not limited in this embodiment of the present disclosure. Optionally, the first information may be a public message, which is a broadcast message or a multicast message sent by the first node.

[0090] In some embodiments, the cell information includes first cell information and / or second cell information; wherein the first cell information includes a cell identifier, and the second cell information includes a sub-cell identifier.

[0091] Alternatively, the cell information includes first cell information, the first cell information is used to indicate whether the cell information includes second cell information, and the second cell information includes a cell identifier and / or a sub-cell identifier. As an example, the first cell information being used to indicate whether the cell information includes the second cell information may be: the first cell information indicates whether the second cell information is included in the current frame or the next frame.

[0092] Figure 8 shows a schematic diagram of sub-cell division. A sub-cell may be one or more sub-coverage areas obtained by further dividing a traditional cell (also called a serving cell).

[0093] In some implementations, the first cell information may be the cell identifier of the source cell of the second node (i.e., the cell previously accessed by the second node), and the second cell information may be the cell identifier of the cell where the second node is currently located. Alternatively, the first cell information is at least one of the following: the current wireless communication cell identifier, or the physical cell identifier configured by the Radio Resource Control (RRC) signaling, or the global cell identity code or the serving cell identifier, and the second cell information is the identifier configured by the first node. As described above, the first node includes devices such as base stations, intermediate nodes, and auxiliary nodes, and the intermediate nodes and auxiliary nodes may be one UE. Therefore, the second cell information may also include the serial number or device ID of the first node itself.

[0094] In some embodiments, the first information is carried in downlink transmission information, and the downlink transmission information includes all downlink transmission information sent by the first node to the second node, or the downlink transmission information includes part of the downlink transmission information sent by the first node to the second node.

[0095] The above is a description of cell information. Next, the order of transmission of cell information and other messages will be described. As described below, the order of transmission of cell information and other messages includes the following scenarios 1 to 7.

[0096] Scenario 1: During the random access process, after the first node obtains the random sequence sent by the second node, the first node may send the first information to the second node.

[0097] Scenario 2: After the second node successfully performs random access (or after the first node obtains the device information of the second node), the first node may send the first information to the second node.

[0098] Scenario 3: When the first node sends an inventory command to the second node, it may send the first information to the second node.

[0099] Scenario 4: After the first node successfully completes the inventory (or after the first node obtains the device information of the second node), it can send the first information to the second node.

[0100] Scenario 5: The first node may send the first message to the second node by broadcasting, without limiting the order with other messages.

[0101] Scenario 6: After the second node sends a pilot signal to the first node, the first node may send the first information to the second node.

[0102] Scenario 7: After the second node sends the random sequence to the first node, the first node may send the first information to the second node.

[0103] The above is a description of the sequence relationship between the first information and other messages during transmission. The following will describe the transmission method of the first information.

[0104] In some embodiments, the transmission method of the first information includes an explicit indication method and / or an implicit indication method.

[0105] The explicit indication method includes at least one of the following: transmitting the first information on the physical downlink shared channel PDSCH; transmitting the first information on the physical downlink control channel PDCCH; transmitting the first information through the media access control MAC; transmitting the first information in the RRC signaling; transmitting the first information on the physical broadcast channel PBCH; transmitting the first information in the dedicated indication field of the physical downlink frame; transmitting the first information on dedicated physical resources; transmitting the first information on a dedicated physical channel.

[0106] The implicit indication method includes at least one of the following: using a preamble or a dedicated sequence to carry the first information; using a CRC to carry the first information.

[0107] In some other embodiments, the first information may be transmitted through various other methods, such as the following methods 1 to 4. Method 1: The first information is transmitted through different types of frames; Method 2: The first information is transmitted through different types of commands; Method 3: The first information is transmitted through multiple associated methods; Method 4: The first information is transmitted in multiple processes. Methods 1 to 4 are described below.

[0108] Mode 1: The first information is transmitted through different types of frames.

[0109] In some embodiments, the first information is carried in a frame of downlink transmission information, and the frame includes at least one of the following: a first type frame, a second type frame, or a third type frame; the first type frame is a frame that transmits the first information based on an explicit indication method; the second type frame is a frame that is transmitted based on an implicit indication method; the third type frame is a frame associated with a preset condition of the second node.

[0110] In some implementations, the first type of frame may be a frame that supports the transmission of the first information by means of an explicit indication, for example, the first type of frame may include an indication field to transmit the first information. The second type of frame may be a frame that supports the transmission of the first information by means of an implicit indication, for example, the second type of frame does not include an indication field for transmitting the first information. The third type of frame may be a frame associated with a preset process or a preset state (i.e., a preset condition), and the first information may be transmitted through the third type of frame when the second node meets the preset condition. Optionally, the preset state may be an idle state, an activated state, an inactivated state, a connected state, an inventory state, a non-inventory state, a state to be inventoryed, or a state after inventory completion of the second node.

[0111] Method 2: The first information is transmitted through different types of commands.

[0112] In some embodiments, the first information is carried in a downlink command of the downlink transmission information, and the downlink command includes at least one of the following: a first downlink command, or a second downlink command; the first downlink command includes at least one of the following: a paging command, an inventory command, an access command, a confirmation command, or an access response command; the second downlink command includes at least one of the following: transmission block size indication information, cyclic redundancy check code CRC information, a command format identifier, a synchronization signal index, an access mask index, a short message indication, or a system information indication.

[0113] In some implementations, the first downlink command includes at least one of a cell access command, a power-on command, an inventory command, an inventory command, a query command, an access command, a random number request command, a UE ID request command, a feedback confirmation command, a transport block size indication command, a level / pulse number indication command, a user equipment status indication command, a user equipment activation or deactivation command, a coding mode indication command, a modulation mode indication command, a bandwidth size indication command, a start / terminator presence indication command, a read command, a write command, or a select command. The second downlink command includes at least one of the first downlink command including a power-on command, a repeat command, an acknowledgement / response command, a random number request command, a UE ID request command, a feedback confirmation command, a transport block size indication command, a level / pulse number indication command, a user equipment status indication command, a user equipment activation or deactivation command, a coding mode indication command, a modulation mode indication command, a bandwidth size indication command, a signal transmission duration indication command, a start / terminator presence indication command, a read command, a write command, or a select command. The user device status includes at least one of an inventory status, a waiting inventory status, a non-inventory status, a status after inventory completion, an on status, an off status, a safe status, an inactivated status, a locked status, an activated status, and a deactivated status.

[0114] In some embodiments, the transmission mode of the first information is determined according to the type of the command, and the transmission mode includes an explicit mode and / or an implicit mode.

[0115] In some implementations, if the second node receives the first downlink command, it indicates that the first information is transmitted via an explicit bearer. In some implementations, if the second node receives the second downlink command, it indicates that the first information is transmitted via an implicit bearer.

[0116] In some implementations, the first node may carry the first information via a downlink command. In this way, when the second node receives the downlink command, it may also receive the first information and determine that the downlink command is correct based on the cell information in the first information.

[0117] Method 3: The first information is transmitted in a related manner through multiple methods.

[0118] The first information is transmitted using at least one of the following transmission modes: physical layer control signaling, data to be transmitted, media access layer control unit MACCE, and radio resource control RRC signaling.

[0119] As an example, the first node may transmit the first information via a MAC CE in association. The first node may send a MAC CE to the second node. Since the MAC CE and the first information are transmitted in association, the first node may simultaneously send the first information when sending the MAC CE to the second node. It is understood that the first node may also transmit the first information via physical layer control signaling, data to be transmitted, or radio resource control (RRC) signaling in association, which is not further described in the present embodiment.

[0120] Method 4: First, information is transmitted in multiple processes.

[0121] The first information is transmitted in at least one of the following processes: a cell access process, a public message broadcast process, an inventory process, a command transmission process, and a data transmission process.

[0122] In some implementations, the first node may transmit the first information during a cell access process. For example, during the cell access process, after the first node obtains a random sequence sent by the second node, the first node may transmit the first information to the second node. The first node may also transmit the first information during a public message broadcast, an inventory, a command transmission, or a data transmission process, although this is not limited in the present embodiment.

[0123] In some embodiments, before S701, the first node may predetermine a transmission mode for transmitting the first information. In the following, the first node's determination of the transmission mode for the first information will be described in conjunction with the description of the first information and the transmission mode for the first information.

[0124] FIG9 shows a flow chart of another information transmission method. In combination with FIG7 , as shown in FIG9 , before the above S701 , the method provided by the embodiment of the present disclosure further includes:

[0125] S901: A first node determines a transmission mode of first information based on a frame type of a frame transmitting the first information.

[0126] In some embodiments, the transmission mode of the first information can be determined based on the frame type of the frame transmitting the first information; when the frame type is a first type frame, the transmission mode of the first information is an explicit indication mode; when the frame type is a second type frame, the transmission mode of the first information is an implicit indication mode; when the frame type is a third type frame, the transmission mode of the first information is an explicit indication mode and / or an implicit indication mode.

[0127] In some implementations, before sending the first information, the first node may first determine a frame for transmitting the first information. Thereafter, the first node may determine a frame type of the frame, thereby determining a transmission mode for the first information based on the frame type of the frame in which the first information is to be transmitted.

[0128] FIG10 shows a flow chart of another information transmission method. In combination with FIG7 , as shown in FIG10 , before the above S701 , the method provided by the embodiment of the present disclosure further includes:

[0129] S1001. A first node determines a transmission mode for first information based on a downlink command for transmitting first information.

[0130] In some embodiments, the transmission method of the first information is determined based on a downlink command for transmitting the first information.

[0131] When the downlink command is the first downlink command, the transmission mode of the first information is an explicit indication mode; when the downlink command is the second downlink command, the transmission mode of the first information is an implicit indication mode.

[0132] In some implementations, in addition to determining the transmission mode of the first information based on the frame type, the first node may also transmit the first information via a downlink command. In this way, the first node may determine the transmission mode of the first information based on the type of the downlink command to which the first information is to be transmitted.

[0133] FIG11 shows a fourth flow chart of another information transmission method. In combination with FIG7 , as shown in FIG11 , before the above S701 , the method provided by the embodiment of the present disclosure further includes:

[0134] S1101. A first node determines a transmission method for first information based on a state of a second node.

[0135] The state of the second node may be a connection state between the second node and the base station.

[0136] In some embodiments, the transmission method of the first information is determined based on the state of the second node, and the state of the second node includes any one of the following: idle state, connected state, inactive state, inventory state, non-inventory state, pending inventory state or state after inventory completion.

[0137] When the state of the second node is idle state or inactive state or inventory state or pending inventory state, the transmission mode of the first information is any one of the following: explicit indication mode, transmission mode based on first type frame, transmission mode based on third type frame or transmission mode based on first downlink command; when the state of the second node is connected state or non-inventory state or inventory completion state, the transmission mode of the first information is any one of the following: implicit indication mode, transmission mode based on second type frame, transmission mode based on third type frame or transmission mode based on second downlink command.

[0138] In some implementations, when the first node determines that the state of the second node is an idle state, an inactive state, an inventory state, or a pending inventory state, the first node may determine that the transmission mode of the first information is to be transmitted in an explicit indication mode. Since the first type frame (or the third type frame or the first downlink command) can transmit the first information in an explicit indication mode, the first node may also bind the transmission to the first type frame (or the third type frame or the first downlink command).

[0139] Accordingly, when the first node determines that the state of the second node is a connected state, a non-inventory state, or a state after inventory completion, the first node can determine that the transmission mode of the first information is an implicit indication mode. Since the second type frame (or the third type frame or the first downlink command) can transmit the first information in an implicit indication mode, the first node can also bind the second type frame (or the third type frame or the first downlink command) for transmission.

[0140] The above is a description of the transmission method of the first information determined by the first node. Below, the transmission method of the first information will be described in multiple situations in combination with the description of the first information and the description of the order of the first information and other information. Next, situations one to six will be described respectively. Situation one: The first node transmits the first information through MAC and / or RRC signaling; Situation two: The first node transmits the first information through PDCCH; Situation three: The first node transmits the first information on dedicated physical resources; Situation four: The first node transmits the first information on preamble resources; Situation five: The first node transmits the first information through CRC resources; Situation six: The first node transmits the first information through the first resource and the second resource.

[0141] The first resource includes at least one of the following: RRC signaling, transmission triggered by a MAC entity, MAC CE, downlink control information, downlink data channel, or dedicated physical resources, etc. The second resource includes a pilot resource or a CRC resource.

[0142] Case 1: The first node transmits the first information through MAC and / or RRC signaling.

[0143] The MAC layer includes a MAC entity and a MAC CE. The first information can be triggered to be transmitted by the MAC entity, instructed to be transmitted by the MEC CE, or configured to be transmitted by RRC signaling. Each of these will be described below.

[0144] (1) The first node triggers the transmission through the MAC entity:

[0145] In some embodiments, the MAC entity may trigger (or initiate, initialize) a random access process (also known as a cell access process). During the cell access process or after successful cell access, the first node may send first information to the second node.

[0146] As an example, for a cell access process initiated by a MAC entity of a second node, after sending a pilot sequence to a first node, the second node may detect within a period of time whether the first node sends access response information to the second node. The access response information may include the first information, and the access response information may also include information related to the pilot sequence sent by the second node (including a pilot index, a pilot sequence, or confirmation information in response to the pilot detection, etc.).

[0147] As another example, for a cell access procedure initiated by a first node, after a second node receives an inventory command sent by the first node, the MAC entity of the second node sends a random sequence to the first node. After receiving a valid random sequence, the first node may send confirmation information in response to the random sequence (the confirmation information includes the first information).

[0148] As another example, for a cell access procedure initiated by a first node, after receiving confirmation information sent by the first node in response to a random sequence, the second node may send device information to the first node. After receiving valid device information, the first node completes the cell access procedure. Thereafter, the first node may send the first information to the second node.

[0149] (2) The first node transmits via MAC CE and RRC signaling:

[0150] In some embodiments, the second node may receive first information indicated by a MAC CE. The received MAC CE may include at least one of the following: a source cell identifier, multiple cell identifiers, or a cell list. The second node searches the received MAC CE for cell information that is identical to the most recently received cell information, as the cell information of the current cell. The cell information may be configured via RRC signaling.

[0151] Figure 12 shows a schematic diagram in which the first node is an intermediate node. As an example, the first node is communicatively connected to a base station via a User Unit (Uu) interface, and a second node (which may be a passive IoT device or an ambient IoT device) is communicatively connected to the first node. The first node can send a MAC CE including cell information to the second node. Furthermore, the first node can send a MAC CE within the activated bandwidth portion of the cell.

[0152] Figure 13 shows a schematic diagram in which the first node is an auxiliary node. As an example, the first node is in communication with a base station via a Uu interface, the base station is in communication with a second node, and the first node is in communication with the second node. The first node can send a MAC CE including cell information to the second node. Furthermore, the first node can send a MAC CE within the activated bandwidth portion of the cell.

[0153] (3) The first node transmits the first cell information and the second cell information through MAC CE and RRC signaling:

[0154] In some embodiments, since the cell information may include first cell information and second cell information, the first cell information and the second cell information may be transmitted via MAC CE and RRC signaling. The first cell information may include the cell information of the cell where the first node is located (one or more passive IoT cells), and the second cell information may include the cell information (cell number) of a predefined or configured sub-cell (also referred to as a new cell) of each passive IoT cell. The cell information of the sub-cell may be used to divide the area where the second node is located, distinguish product types, or locate the location of the device.

[0155] Optionally, the cell information may be transmitted on a broadcast channel, or configured by RRC signaling, or indicated by a MIB information element.

[0156] (4) The first node transmits the first information via a MAC protocol data unit (PDU):

[0157] MAC may also include MAC PDU.

[0158] In some embodiments, the first information may be carried by a MAC PDU header or a MAC PDU subheader. The first information in the MAC PDU header may be located before or after one or more MAC PDU subheaders. Alternatively, the first information is associated with a scrambling sequence of the MAC PDU header or the MAC PDU. Alternatively, the first information in the MAC PDU subheader is associated with a MAC subPDU / MAC service data unit (SDU) corresponding to the MAC PDU subheader. Alternatively, the first information in the MAC PDU subheader is associated with other information in the MAC PDU subheader. The MAC subPDU / MAC SDU includes a MAC control unit related to data transmission, such as: at least one of a buffer status report (BSR), a cell radio network temporary identifier (C-RNTI), a discontinuous reception (DRX), a UE competition resolution identifier (CRI), a timing advance command (TAC) or a power headroom (PH), or the MAC subPDU / MAC SDU includes a MAC PDU related to data transmission, a MAC PDU related to transparent transmission, and a MAC PDU related to random access.

[0159] Figure 14 shows a schematic diagram of an information format in which first information is carried via a MAC PDU header or a MAC PDU subheader. This information format includes a MAC PDU header, a MAC control unit 1, a MAC control unit 2, a MAC subPDU / MAC SDU1, and a MAC subPDU / MAC SDU2. The MAC PDU header includes a control unit 1 subheader, a control unit 2 subheader, a MAC subPDU / MAC SDU1 subheader, and a MAC subPDU / MAC SDU2 subheader. The MAC subPDU / MAC SDU1 subheader may include the first information. The MAC subPDU / MAC SDU1 subheader may also include an R / R / E / LCID / sub-header.

[0160] In some embodiments, the first information is located in at least one MAC subPDU / MAC SDU. The MAC subPDU / MAC SDU may be a MAC PDU related to a random access procedure, the first information is carried by a MAC subPDU in a RAR, or the first information is located before or after the MAC subPDU in the RAR. The MAC subPDU in the RAR includes at least one of the following: a backoff indicator (BI), a random access pilot identifier, or a random access preamble identifier (RAPID). The MAC subPDU / MAC SDU may be a MAC PDU related to data transmission, the first information is carried by at least one MAC subPDU / MAC SDU or at least one MAC control information.

[0161] The at least one MAC subPDU / MAC SDU may include the first information or scramble the at least one MAC subPDU / MAC SDU using a sequence determined by the first information.

[0162] The at least one MAC control information includes at least one of MAC control elements such as a buffer status report BSR, a C-RNTI, a DRX, a UE contention resolution identifier CRI, a timing advance command TAC or a power headroom PH.

[0163] The MAC subPDU / MAC SDU is a MAC PDU related to transparent transmission, and the first information is carried by a specific MAC subPDU / SDU. The first information is located at the head or tail of the specific MAC subPDU / SDU information.

[0164] Figure 15 shows a schematic diagram of an information format in which first information is carried via a MAC subPDU / MAC SDU. This information format includes a MAC PDU header, a MAC control unit 1, a MAC control unit 2, a MAC subPDU / MAC SDU1, and a MAC subPDU / MAC SDU2. MAC subPDU / MAC SDU1 (or MAC subPDU / MAC SDU2) may include the first information.

[0165] In some embodiments, the MAC subPDU / SDU / PDU may include first information, and the MAC PDU subheader corresponding to the MAC subPDU / SDU / PDU includes at least one of indication information of whether the first information exists in the corresponding MAC subPDU / SDU / PDU, first information length indication information, or first information type indication information.

[0166] Figure 16 shows a schematic diagram of a method of carrying first information via a MAC PDU header and a MAC subPDU / MAC SDU. The information format includes a MAC PDU header, a MAC control unit 1, a MAC control unit 2, a MAC subPDU / MAC SDU1, and a MAC subPDU / MAC SDU2. The MAC PDU header includes a control unit 1 subheader, a control unit 2 subheader, a MAC subPDU / MAC SDU1 subheader, and a MAC subPDU / MAC SDU2 subheader. The MAC subPDU / MAC SDU1 subheader may include whether the first information includes cell information. If the MAC subPDU / MAC SDU1 subheader includes the first information including cell information, the MAC subPDU / MAC SDU1 may include the cell information.

[0167] In some embodiments, the first information may be at least one MAC control information, where the MAC control information is located before a MAC subPDU / SDU or a MAC PDU.

[0168] Case 2: The first node transmits the first information through the PDCCH.

[0169] The first information may be indicated by a dedicated field in the PDCCH or carried by CRC bits of control information transmitted on the PDCCH. In the following, the transmission (or carrying, indicating) of the first information by the PDCCH will be described separately.

[0170] (5) The first node carries the first information through the PDCCH:

[0171] In some embodiments, the second node may receive first information indicated by a dedicated field in the PDCCH during the first cell access process. After successful cell access, the second node may receive the first information carried by the CRC bits of the control information transmitted on the PDCCH.

[0172] In some embodiments, when CRC bits of the control information carried by the PDCCH are scrambled by a first radio network temporary indentifier (RNTI), the PDCCH is used to carry the first information. The first RNTI includes a public RNTI or an RNTI of the second node.

[0173] In some embodiments, the PDCCH may carry a new control information format or the CRC bits of the control information carried by the PDCCH may be scrambled by a new RNTI. The number of information bits carried by the new control information format is configured or predefined by higher-layer signaling. The number of information bits carried by the new control information format is not less than the length of the cell information.

[0174] In some embodiments, when the PDCCH carries first-type indication information, a dedicated field of control information carried by the PDCCH or CRC bits of the control information is used to carry the first information. The first-type indication information includes at least one of the following: a downlink control information format identifier, a synchronization signal block (SSB) index, a physical random access channel (PRACH) mask index, a short message indication, or a system information indication.

[0175] (6) The first node carries the first cell information and the second cell information through the PDCCH:

[0176] In some embodiments, the first node may indicate the first cell information through a dedicated indication field in the PDCCH, and may carry the second cell information through CRC bits of control information transmitted on the PDCCH.

[0177] In some embodiments, the first node may carry the first cell information through the PDCCH and carry the second cell information through the PDSCH.

[0178] In some embodiments, when the CRC bits of the PDCCH are scrambled by the first type of RNTI, the first information is indicated by a dedicated field of the PDCCH. When the CRC bits of the PDCCH are scrambled by the second type of RNTI, the CRC bits of the PDCCH are used to carry the first information. The PDCCH scrambled with the first type of RNTI can be used to indicate the RNTI of a group of second nodes, or to indicate the RNTI of a second node of a cell or subcell, or to indicate one or more intermediate nodes (auxiliary nodes).

[0179] Case 3: The first node transmits the first information on a dedicated physical resource.

[0180] The dedicated physical resources may include at least one of the following: a dedicated common channel, a preamble transmission resource, a control command transmission resource, and a transmission resource for data to be transmitted. The following describes how to transmit the first information using the dedicated physical resources.

[0181] (7) The first node transmits the first information through a dedicated physical resource:

[0182] In some embodiments, the first node may carry the first information via an information format on a dedicated physical resource. The information format comprises at least one of the following information types: a preamble (or a preamble sequence), a control command, cell information, data to be transmitted, or a common channel.

[0183] The information formats include the following:

[0184] The first information format includes a preamble and cell information.

[0185] The second information format includes a preamble, a control command, and cell information; for example, the control command includes a first control command.

[0186] The first control command includes at least one of a cell access command, a power-on command, an inventory command, a query command, a repeat command, an access command, an acknowledgement / response command, a random number request command, a UE ID request command, a feedback confirmation command, a transport block size indication command, a level / pulse number indication command, a user equipment status indication command, a user equipment activation or deactivation command, a coding mode indication command, a modulation mode indication command, a bandwidth size indication command, a signal transmission duration indication command, a start / terminator presence indication command, a read command, a write command, or a select command. The user equipment status includes at least one of an inventory status, a pending inventory status, a non-inventory status, an inventory completion status, an on state, an off state, a secure state, a deactivated state, a locked state, an activated state, and a deactivated state.

[0187] The third information format includes a preamble, a common message, and cell information; for example, the common message includes indication information of whether the information format includes cell information.

[0188] The fourth information format includes a preamble, data to be transmitted, and cell information; for example, the data to be transmitted includes indication information of whether the information format includes cell information.

[0189] The fifth information format includes a preamble, a control command, data to be transmitted, and cell information.

[0190] The sixth information format includes a preamble, a control command, a common message and cell information.

[0191] The seventh information format includes a preamble, a control command, a common message, data to be transmitted, and cell information.

[0192] The eighth information format includes a preamble, a common message, data to be transmitted, and cell information.

[0193] The above information format may be an information format obtained by sequentially combining one or more types of information included therein.

[0194] Figure 17 shows a schematic diagram of the structure of an information format. The information format (e.g., the first information format) includes a preamble (or preamble sequence) and cell information (including a cell identifier), as well as other data. The cell information and other data are transmitted in a physical common channel.

[0195] Figure 18 shows a schematic diagram of the structure of another information format. This information format (e.g., the fifth information format) includes a preamble sequence, cell information, control commands, data to be transmitted (or data sequence), and other data. The cell information and other data can be transmitted in a physical common channel.

[0196] Figure 19 shows a schematic diagram of the structure of another information format. This information format (e.g., the fifth information format) includes a preamble sequence, a control command, other data, cell information, and a data sequence. The cell information and other data are transmitted in a physical common channel.

[0197] Figure 20 shows a schematic diagram of the structure of another information format. This information format includes preamble sequence 1, other data, cell information, preamble sequence 2, control commands, and a data sequence. Preamble sequence 1 is transmitted before preamble sequence 2. Cell information and other data are transmitted on the physical common channel.

[0198] The preamble may include a preamble sequence 1 and a preamble sequence 2. The preamble sequence 1 may be transmitted before the preamble sequence 2, or the preamble sequence 1 and the preamble sequence 2 may be concatenated and transmitted together.

[0199] In some embodiments, the first information may be transmitted on a common channel.

[0200] In some embodiments, the first node may carry the first information via at least one information type. The information type includes at least one of the following: a preamble, a control command, a synchronization sequence, data to be transmitted, or a public message. For example, the cell information is carried by a preamble sequence, or the preamble sequence is generated based on the cell information, or the preamble sequence index is generated based on the cell information, or the preamble sequence is generated based on the cell information as an initial value. In another example, the cell information is carried by a control command, or the cell information is a field in the control command, or the cell information is used to scramble the CRC bits of the control command, or the scrambling sequence of the control command is generated based on the cell information. In another example, the cell information is carried by the data to be transmitted, or the cell information occupies a dedicated resource segment within the data transmission resources, or the cell information is used to scramble the CRC bits of the data, or the scrambling sequence of the data is generated based on the cell information. In another example, the cell information is carried by a public message, or the cell information occupies a dedicated resource segment within the public message transmission resources, or the cell information is used to scramble the CRC bits of the public message, or the scrambling sequence of the public message is generated based on the cell information.

[0201] In some embodiments, the length of the preamble sequence used to carry cell information (control commands, data to be transmitted, common messages) is not less than a first preset threshold (the first preset threshold is not less than 4 and not greater than 1000).

[0202] Figure 21 shows a schematic diagram of a structure for transmitting cell information via control commands. The information format includes a preamble sequence and multiple control commands (control command 1 ... control command N). The cell information is also carried in the multiple control commands and is located before control command 1.

[0203] Figure 22 shows a schematic diagram of a structure for transmitting cell information via data to be transmitted. The information format includes a preamble sequence, control commands, and data information (i.e., data to be transmitted). The data information may include cell information and other data.

[0204] Figure 23 shows another schematic diagram of the structure of transmitting cell information via data to be transmitted. The information format includes a preamble sequence and data information (i.e., data to be transmitted). The data information may include cell information and other data.

[0205] Figure 24 shows a schematic diagram of a structure for transmitting cell information via a synchronization sequence. The information format includes a preamble sequence, control commands, cell information, and a data sequence. The cell information is carried in the synchronization sequence.

[0206] (8) The first node transmits the first cell information and the second cell information via dedicated physical resources:

[0207] In some embodiments, the first node may transmit the first cell information and / or the second cell information using multiple information formats.

[0208] Multiple message formats include:

[0209] The ninth information format includes a preamble, first cell information, and second cell information.

[0210] The tenth information format includes a preamble, a control command, first cell information and second cell information; for example, when the control command includes a first control command, the time domain resources (or frequency domain resources) before or after the control command are used to transmit the first cell information and / or the second cell information.

[0211] The eleventh information format includes a preamble, a common message, first cell information and / or second cell information; for example, the common message includes indication information of whether the information format includes the first cell information or the second cell information.

[0212] The twelfth information format includes a preamble, a control command, data to be transmitted, first cell information and / or second cell information; for example, the data to be transmitted may include whether the information format includes the first cell information and / or the second cell information.

[0213] The thirteenth information format includes a preamble, a control command, data to be transmitted, first cell information and / or second cell information.

[0214] The fourteenth information format includes a preamble, a control command, a common message, first cell information and / or second cell information.

[0215] The fifteenth information format includes a preamble, a control command, a common message, data to be transmitted, first cell information and / or second cell information.

[0216] The sixteenth information format includes a preamble, a control command, data to be transmitted, first cell information and / or second cell information.

[0217] The above information format may be an information format obtained by sequentially combining one or more types of information included therein.

[0218] Figure 25 shows a schematic structural diagram of an information format for transmitting first cell information and second cell information. The information format may include first cell information, second cell information, and data to be transmitted (or an information sequence).

[0219] Figure 26 shows a schematic diagram of another information format for transmitting first cell information and second cell information. The information format includes a preamble sequence, first cell information, second cell information, and other information sequences.

[0220] In some embodiments, the first information is transmitted in a common channel.

[0221] Case 4: The first node transmits first information on the preamble resource.

[0222] The preamble resource may include a first preamble sequence and / or a second preamble sequence. The length of the first preamble sequence is not less than the length of the second preamble sequence. The first preamble sequence and the second preamble sequence are different from the existing secondary synchronization signal (SSS) and / or primary synchronization signal (PSS). The first preamble sequence and the second preamble sequence may be generated according to at least one of the following methods: Manchester coding or pulse interval encoding (PIE) or FMO coding or OOK modulation or ASK modulation or BPSK modulation or DFT-s-OFDM waveform. Next, the transmission of the first information on the preamble resource will be described.

[0223] (9) The first node transmits the first information via the leading resource:

[0224] In some embodiments, the cell information may be transmitted in a variety of information formats. The information format includes a first preamble sequence and / or a second preamble sequence. In some embodiments, the first preamble sequence and / or the second preamble sequence are generated based on the cell information.

[0225] Multiple message formats include:

[0226] The seventeenth information format includes a first preamble sequence.

[0227] The eighteenth information format includes a first preamble sequence and a second preamble sequence.

[0228] The nineteenth information format includes a second preamble sequence.

[0229] The above information format may be an information format obtained by sequentially combining one or more types of information included therein.

[0230] (10) The first node transmits the first cell information and / or the second cell information via the preamble resource:

[0231] In some embodiments, when the seventeenth information format includes a first preamble sequence, the first preamble sequence is generated according to the first cell information and / or the second cell information, or the first preamble sequence is used to carry the first cell information and / or the second cell information.

[0232] In some embodiments, when the eighteenth information format includes a first preamble sequence and a second preamble sequence, the first preamble sequence is generated based on the first cell information, and the second preamble sequence is generated based on the second cell information. Alternatively, the first preamble sequence is used to carry the first cell information, and the second preamble sequence is used to carry the second cell information.

[0233] In some embodiments, when the nineteenth information format includes a second preamble sequence, the second preamble sequence is generated according to the first cell information and / or the second cell information. Alternatively, the second preamble sequence is used to carry the first cell information and / or the second cell information.

[0234] Case 5: The first node transmits the first information through the CRC resource.

[0235] The CRC resource includes CRC bits for the control command (or data to be transmitted, public message). The number of CRC bits for control commands (or data to be transmitted, public message) of different lengths varies. The following describes the transmission of the first information using the CRC resource.

[0236] Optionally, the length of the CRC bits includes at least one of the following: 4 bits, 8 bits or 16 bits.

[0237] (11) The first node carries the first information through the CRC bits of the control command (or data to be transmitted, public message):

[0238] In some embodiments, the data to be transmitted or the CRC bits of the data to be transmitted are used to carry cell information. The dedicated resources in the high-level parameter configuration or predefined data transmission resources indicate to the second node that the CRC bits of the data to be transmitted are used to carry the cell information.

[0239] The control command or the CRC bit of the control command is used to carry the cell information. The dedicated resource in the transmission resource of the control command configured by the higher layer parameters or predefined is used to instruct the second node to carry the cell information as the CRC bit of the control command.

[0240] The common message or the CRC bit of the common message is used to carry the cell information. The dedicated resource in the common message transmission resource configured by a higher layer parameter or predefined is used to instruct the second node to carry the cell information as the CRC bit of the common message.

[0241] In some embodiments, the CRC used for the bearer cell may have a first preset length, which may be 8 or 16 bits.

[0242] In some embodiments, when the CRC bit length (i.e., the CRC bits expected to carry cell information) is less than the CRC bit length of the cell information (or the length of the sequence generated based on the cell information), the CRC bit length of the cell information (or the length of the sequence generated based on the cell information) is truncated. For example, when the CRC bit length of the cell information is an integer multiple of the CRC bit length expected to carry cell information, the excess length of the tail of the CRC bits carrying the cell information is truncated to achieve alignment with the CRC bit length.

[0243] Figure 27 shows a schematic diagram of a structure of an information format for transmitting cell information via the CRC bits of the data to be transmitted. The information format includes a data sequence (data to be transmitted) and cell information. The cell information is carried by the CRC bits of the data sequence.

[0244] Figure 28 shows a schematic diagram of a structure of an information format for transmitting cell information via the CRC bits of a control command. The information format includes a control command and cell information. The cell information is carried via the CRC bits of the control command.

[0245] (12) The first node carries the first cell information or the second cell information through the CRC bits of the control command (or data to be transmitted, public message):

[0246] In some embodiments, the data to be transmitted is used to carry first cell information, and the CRC bits of the data to be transmitted are used to carry second cell information. Alternatively, the data to be transmitted is used to carry second cell information, and the CRC bits of the data to be transmitted are used to carry second cell information. The first cell information is carried by dedicated resources for the data to be transmitted, or the data sequence is scrambled according to a sequence generated by the first cell information.

[0247] The control command is used to carry the first cell information, and the CRC bits of the control command are used to carry the second cell information. Alternatively, the control command is used to carry the second cell information, and the CRC bits of the control command are used to carry the second cell information. The first cell information is carried in the dedicated indicator field of the control command, or the control command is scrambled based on a sequence generated based on the first cell information.

[0248] The common message is used to carry the first cell information, and the CRC bits of the common message are used to carry the second cell information. Alternatively, the common message is used to carry the second cell information, and the CRC bits of the common message are used to carry the second cell information. The first cell information is carried on dedicated resources for the common message, or the common message is scrambled based on a sequence generated based on the first cell information.

[0249] In some embodiments, the CRC bits of the control command carry first cell information, and / or the CRC bits of the data to be transmitted or the common message carry second cell information.

[0250] The CRC bits of the data to be transmitted or the common message carry the first cell information, and / or the CRC bits of the control command carry the second cell information.

[0251] The CRC bits of the data to be transmitted carry the first cell information, and / or the CRC bits of the control command or the common message carry the second cell information.

[0252] The CRC bits of the control command or the common message carry the first cell information, and / or the CRC bits of the data to be transmitted carry the second cell information.

[0253] The CRC bits of the common message carry the first cell information, and / or the CRC bits of the control command or the data to be transmitted carry the second cell information.

[0254] The CRC bits of the control command or the data to be transmitted carry the first cell information, and / or the CRC bits of the common message carry the second cell information.

[0255] In some embodiments, CRC bits of a first preset length are used to carry first cell information, and / or CRC bits of a second preset length are used to carry second cell information. The first preset length is not less than the second preset length.

[0256] Case 6: The first node transmits the first information through the first resource and the second resource.

[0257] It is understandable that transmission via the first resource is transmission in an explicit indication manner, and transmission via the second resource is transmission in an implicit indication manner. The first information can be transmitted in both explicit indication and implicit indication manners.

[0258] In some embodiments, the first resource and the second resource that jointly carry the cell information are located in the same frame.

[0259] In some embodiments, for a second node that is in a cell access process or in a radio resource control idle (RRC Idle) state or in a radio resource control inactive (RRC Inactive) state (or inactive state) or in an inventory state or in a state to be inventoryed, the first node may use the first resource to transmit cell information. Alternatively, for a second node that has successfully accessed the cell or is in a radio resource control connected (RRC Connected) state or in an RRC Inactive state or in a non-inventory state or in a state after inventory completion, the first node may transmit cell information through the second resource.

[0260] It can be understood that the inventory completion state can also be called the inventory completion state.

[0261] In some embodiments, the first node may transmit the cell information by combining the first resource and the second resource, where the combination includes at least one of the following:

[0262] The first resource includes RRC signaling or downlink transmission or MAC CE triggered by MAC entity; the second resource includes CRC bits corresponding to the first resource.

[0263] The first resource includes RRC signaling or downlink transmission or MAC CE triggered by MAC entity; the second resource includes a first pilot sequence or a second pilot sequence or a preamble sequence or a scrambling sequence related to the first resource.

[0264] The first resource includes a transmission resource of a physical downlink control channel; the second resource includes a CRC bit corresponding to the first resource or a CRC bit corresponding to a downlink data channel transmission resource related to the first resource.

[0265] The first resource includes a transmission resource of a physical downlink control channel; the second resource includes a pilot sequence associated with the first resource.

[0266] The first resource includes the transmission resource of the physical downlink data channel; the second resource includes the CRC bit corresponding to the first resource or the pilot sequence associated with the first resource; or the first resource includes a dedicated physical resource; the second resource includes at least one of the following: the CRC bit corresponding to the first resource, the pilot sequence associated with the first resource, the preamble sequence associated with the first resource, the control command or data, etc.

[0267] In some embodiments, the transmission resource of the physical downlink control channel includes a dedicated resource segment in the downlink control information transmission resource, or a dedicated indicator field in the downlink control information.

[0268] The transmission resource of the physical downlink data channel includes a dedicated resource segment in the data transmission resource, or a dedicated information bit in the data information.

[0269] Dedicated physical resources include a dedicated information field in a public message, or a dedicated public channel transmission resource, or a dedicated control command, or a dedicated data information field, or a preamble sequence, or a preamble sequence of a control command frame, or a preamble sequence of a data frame, or a preamble sequence of a command confirmation frame, or the resources occupied by the cyclic prefix of an orthogonal frequency division multiplexing (OFDM) symbol, or the resources occupied by the cyclic suffix of an OFDM symbol.

[0270] In some embodiments, the CRC bits corresponding to the first resources include CRC bits corresponding to a physical downlink control channel, a physical downlink data channel and / or dedicated physical resources.

[0271] In some embodiments, the cell information is carried by a first downlink command and transmitted on a first resource, and / or the cell information is carried by a second downlink command and transmitted on a second resource.

[0272] In some embodiments, the transmission of the cell information is associated with the command information. If the first node transmits a first downlink command, the cell information is (explicitly) carried on the first resource. If the first node transmits a second downlink command, the cell information is (implicitly) carried on the second resource.

[0273] In some embodiments, the first downlink command is related to at least one of cell access, random access, timing advance indication, power control, inventory and access, and command confirmation.

[0274] In some embodiments, the second downlink command is related to at least one of control and data information, synchronization information, power control, inventory and access, and command confirmation sent after successful cell access / random access.

[0275] In some embodiments, the transmission of cell information is associated with a frame type. A first-type frame is used to carry the cell information through explicit indication or the first-type frame is transmitted on a first resource and carries the cell information, and / or a second-type frame is used to carry the cell information through implicit indication or the second-type frame is transmitted on a second resource and carries the cell information.

[0276] In some embodiments, cell message transmission is associated with the data type of the data to be transmitted. The cell message is bound to the transmission of first-category data and transmitted on first resources; and / or the cell message is bound to the transmission of second-category data and transmitted on second resources. The transmission of the first-category data transmits the cell message via explicit indication; and / or the transmission of the second-category data transmits the cell message via implicit indication.

[0277] In some embodiments, the transmission of the cell message is associated with the length of the data to be transmitted or the transmission block size (TBS).

[0278] In some embodiments, when the length of the data to be transmitted is less than a second preset threshold, the data to be transmitted carrying the cell message is transmitted on the first resource, or the data to be transmitted transmits the cell information via an explicit indication. Alternatively, when the length of the data to be transmitted is not less than the second preset threshold, the data to be transmitted carrying the cell message is transmitted on the second resource, or the data to be transmitted transmits the cell information via an implicit indication.

[0279] In some embodiments, the first resource is used to transmit first cell information, and / or the second resource is used to transmit second cell information.

[0280] In some embodiments, the first cell information is transmitted via explicit indication, and / or the second cell information is transmitted via implicit indication.

[0281] In some embodiments, the second resource used to carry the cell information satisfies at least one of the following conditions: the number of bits carried by the second resource is not less than a third preset threshold, or the number of CRC bits corresponding to the second resource is not less than a fourth preset threshold. The fourth preset threshold may be equal to the first preset length.

[0282] In some embodiments, the second resource is used to transmit the first cell information and / or the second cell information.

[0283] The information transmission method provided in the embodiment of the present disclosure may also be applied to the second node 302 in the communication system shown in Figure 3. Figure 29 shows a flowchart diagram 5 of an information transmission method. As shown in Figure 29, the information transmission method includes the following S2901.

[0284] S2901: The second node receives first information sent by the first node.

[0285] The first information includes cell information.

[0286] In some implementations, after receiving the cell information in the first information, the second node may authenticate the cell information to determine whether the cell information is the cell information of the cell where the second node is located. The authentication method is as follows:

[0287] After receiving the first information, the second node may send user information or data containing cell information to the first node. If the first node returns a confirmation message, the second node may confirm that the cell information is correct. If the first node does not return a confirmation message, the second node may repeatedly send the user information or data containing cell information, or continue to receive inventory commands sent by the first node, or repeatedly send pilot signals to the first node until the second node receives new cell information and a confirmation message returned by the first node.

[0288] The manner in which the second node sends user information or data carrying cell information may include at least one of the following: transmitting the cell information as data or a command, transmitting the cell information as a preamble, transmitting a sequence generated according to the cell information, transmitting a CRC portion of the sequence-encrypted data or command information generated according to the cell information, or transmitting a sequence-encrypted data or command information generated according to the cell information.

[0289] In some embodiments, the carrying (or transmission mode) of cell information, or whether to carry (or transmit) a cell ID, is determined based on one or more of a frame header type, a frame format, a command type, a control command transmission format, a data block size, an uplink transmission mode, and a terminal type. The frame header type includes at least one of a control frame header, a data frame header, a frame header of different control commands, a preamble, a cyclic prefix, a start character, or a terminator. The control command transmission format includes at least one of a MAC signaling type, a MAC PDU format, or an RRC message type. The uplink transmission mode includes at least one of an OFDM symbol-based transmission mode, a single carrier transmission mode, a 5G NR timing alignment-based transmission mode, or a backscatter transmission mode. The terminal type includes at least one of a first terminal type, a second terminal type, or a third terminal type. The first terminal type is a terminal that directly performs downlink communication transmission with the base station; the second terminal type is a terminal that performs downlink communication transmission with the base station through an intermediate node / auxiliary node or a terminal that performs downlink communication transmission with an intermediate node / auxiliary node; the third terminal type is a terminal that performs downlink communication transmission with the base station through a 4G (or 5G) terminal device or a terminal that performs downlink communication transmission with a 4G (or 5G) terminal device.

[0290] In some implementations, when the data block size is less than a fifth preset threshold, the downlink transmission does not carry the cell information or carries the cell information in an implicit manner. When the data block size is not less than the fifth preset threshold, the downlink transmission carries the cell information in an explicit or implicit manner.

[0291] In some embodiments, the public message includes the UE ID. In some implementations, the cell information and the UE ID are transmitted simultaneously via downlink. For example, the cell information and the UE ID are carried by specific fields or resources in a control command or data transmission. In some embodiments, the second node receives the UE ID after receiving the cell information. The transmission process carrying the UE ID and the transmission process carrying the cell information belong to different transmission processes. In some embodiments, after the transmission / reception process of the cell information is completed, the transmission / reception process of the UE ID is started. For example, the second node receives the cell information sent by the first node during the cell access process; then, in the subsequent inventory command or data transmission process, it receives the UE ID information sent by the first node.

[0292] It is understandable that after the second node obtains the cell information, unless the cell access process (or inventory process) is restarted, the second node will not receive (or will not respond, will not expect to receive, will ignore) data or command information carrying non-cell information.

[0293] It should be noted that the description of the first information received by the second node, the description of the order of the first information and other messages, the transmission method of the first information, and the description of the transmission method of the first information determined by the first node can refer to the description of the first node, and the embodiments of the present disclosure will not be repeated here.

[0294] It is understandable that, in order to implement the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. It should be readily apparent to those skilled in the art that, in conjunction with the algorithmic steps of the various examples described in the embodiments of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0295] The embodiments of the present disclosure can divide the functional modules of the communication device according to the above-mentioned method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above-mentioned integrated modules can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is schematic and is only a logical functional division. In actual implementation, there may be other division methods. The following is an example of dividing each functional module corresponding to each function.

[0296] FIG30 is a schematic diagram of the structure of a communication device provided by an embodiment of the present disclosure, which can execute the information transmission method provided by the above method embodiment. As shown in FIG30 , the communication device includes: a sending unit 3001.

[0297] The sending unit 3001 sends first information to the second node, where the first information includes cell information.

[0298] In one implementation, the cell information includes first cell information and / or second cell information; wherein the first cell information includes a cell identifier, and the second cell information includes a sub-cell identifier.

[0299] In one implementation, the cell information includes first cell information, the first cell information is used to indicate whether the cell information includes second cell information, and the second cell information includes a cell identifier and / or a sub-cell identifier.

[0300] In one implementation, the first information is carried in downlink transmission information, and the downlink transmission information includes all downlink transmission information sent by the first node to the second node, or the downlink transmission information includes part of the downlink transmission information sent by the first node to the second node.

[0301] In one implementation, the transmission mode of the first information includes an explicit indication mode and / or an implicit indication mode.

[0302] In one implementation, the first information is carried in a frame of downlink transmission information, and the frame includes at least one of the following: a first type frame, a second type frame, or a third type frame; the first type frame is a frame that transmits the first information based on an explicit indication method; the second type frame is a frame that is transmitted based on an implicit indication method; the third type frame is a frame associated with a preset condition of the second node.

[0303] In one implementation, the transmission mode of the first information is determined based on the frame type of the frame transmitting the first information.

[0304] In one implementation, when the frame type is a first type frame, the transmission mode of the first information is an explicit indication mode;

[0305] When the frame type is a second type frame, the transmission mode of the first information is an implicit indication mode;

[0306] When the frame type is a third type frame, the transmission mode of the first information is an explicit indication mode and / or an implicit indication mode.

[0307] In one implementation, the first information is carried in a downlink command of the downlink transmission information, and the downlink command includes at least one of the following: a first downlink command, or a second downlink command; the first downlink command includes at least one of the following: a paging command, an inventory command, an access command, a confirmation command, or an access response command; the second downlink command includes at least one of the following: transmission block size indication information, cyclic redundancy check code CRC information, a command format identifier, a synchronization signal index, an access mask index, a short message indication, or a system information indication.

[0308] In one implementation, the transmission mode of the first information is determined based on a downlink command for transmitting the first information.

[0309] In one implementation, when the downlink command is a first downlink command, the transmission mode of the first information is an explicit indication mode; when the downlink command is a second downlink command, the transmission mode of the first information is an implicit indication mode.

[0310] In one implementation, the transmission method of the first information is determined based on the state of the second node, and the state of the second node includes any one of the following: idle state, connected state, inactive state, inventory state, non-inventory state, pending inventory state, or inventory completion state.

[0311] In one implementation, when the state of the second node is an idle state or an inactive state or an inventory state or a state to be inventory-taken, the transmission mode of the first information is any one of the following: an explicit indication mode, a transmission mode based on a first type of frame, a transmission mode based on a third type of frame, or a transmission mode based on a first downlink command; when the state of the second node is a connected state or a non-inventory state or a state after inventory is completed, the transmission mode of the first information is any one of the following: an implicit indication mode, a transmission mode based on a second type of frame, a transmission mode based on a third type of frame, or a transmission mode based on a second downlink command.

[0312] In one implementation, the explicit indication method includes at least one of the following: transmitting the first information on a physical downlink shared channel PDSCH; transmitting the first information on a physical downlink control channel PDCCH; transmitting the first information through a MAC CE;

[0313] Transmitting the first information in RRC signaling; transmitting the first information on a physical broadcast channel PBCH; transmitting the first information in a dedicated indication field of a physical downlink frame;

[0314] The first information is transmitted on a dedicated physical resource; and the first information is transmitted on a dedicated physical channel.

[0315] In one implementation, the implicit indication method includes at least one of the following: using a preamble or a dedicated sequence to carry the first information; using a CRC to carry the first information.

[0316] In one implementation, the first information is transmitted using at least one of the following transmission modes: physical layer control signaling, data to be transmitted, media access layer control unit MAC CE, and radio resource control RRC signaling.

[0317] In one implementation, the first information is transmitted in at least one of the following processes: a cell access process, a public message broadcast process, an inventory process, a command transmission process, and a data transmission process.

[0318] FIG31 is a schematic diagram of the structure of another communication device provided by an embodiment of the present disclosure, which can execute the information transmission method provided by the above method embodiment. As shown in FIG31 , the communication device includes: a receiving unit 3101.

[0319] The receiving unit 3101 is configured to receive first information sent by a first node, where the first information includes cell information.

[0320] In one implementation, the cell information includes first cell information and / or second cell information; wherein the first cell information includes a cell identifier, and the second cell information includes a sub-cell identifier.

[0321] In one implementation, the cell information includes first cell information, the first cell information is used to indicate whether the cell information includes second cell information, and the second cell information includes a cell identifier and / or a sub-cell identifier.

[0322] In one implementation, the first information is carried in downlink transmission information, and the downlink transmission information includes all downlink transmission information sent by the first node to the second node, or the downlink transmission information includes part of the downlink transmission information sent by the first node to the second node.

[0323] In one implementation, the transmission mode of the first information includes an explicit indication mode and / or an implicit indication mode.

[0324] In one implementation, the first information is carried in a frame of downlink transmission information, and the frame includes at least one of the following: a first type frame, a second type frame, or a third type frame; the first type frame is a frame that transmits the first information based on an explicit indication method; the second type frame is a frame that is transmitted based on an implicit indication method; the third type frame is a frame associated with a preset condition of the second node.

[0325] In one implementation, the transmission mode of the first information is determined based on the frame type of the frame transmitting the first information.

[0326] In one implementation, when the frame type is a first type frame, the transmission mode of the first information is an explicit indication mode;

[0327] When the frame type is a second type frame, the transmission mode of the first information is an implicit indication mode;

[0328] When the frame type is a third type frame, the transmission mode of the first information is an explicit indication mode and / or an implicit indication mode.

[0329] In one implementation, the first information is carried in a downlink command of the downlink transmission information, and the downlink command includes at least one of the following: a first downlink command, or a second downlink command; the first downlink command includes at least one of the following: a paging command, an inventory command, an access command, a confirmation command, or an access response command; the second downlink command includes at least one of the following: transmission block size indication information, cyclic redundancy check code CRC information, a command format identifier, a synchronization signal index, an access mask index, a short message indication, or a system information indication.

[0330] In one implementation, the transmission mode of the first information is determined based on a downlink command for transmitting the first information.

[0331] In one implementation, when the downlink command is a first downlink command, the transmission mode of the first information is an explicit indication mode; when the downlink command is a second downlink command, the transmission mode of the first information is an implicit indication mode.

[0332] In one implementation, the transmission method of the first information is determined based on the state of the second node, and the state of the second node includes any one of the following: idle state, connected state, inactive state, inventory state, non-inventory state, pending inventory state, or inventory completion state.

[0333] In one implementation, when the state of the second node is an idle state, an inactive state, an inventory state, or a state to be inventoryed, the transmission mode of the first information is any one of the following: an explicit indication mode, a transmission mode based on a first type of frame, a transmission mode based on a third type of frame, or a transmission mode based on a first downlink command; when the state of the second node is a connected state, a non-inventory state, or a state after inventory is completed, the transmission mode of the first information is any one of the following: an implicit indication mode, a transmission mode based on a second type of frame, a transmission mode based on a third type of frame, or a transmission mode based on a second downlink command.

[0334] In one implementation, the explicit indication method includes at least one of the following: transmitting the first information on a physical downlink shared channel PDSCH; transmitting the first information on a physical downlink control channel PDCCH; transmitting the first information through a MAC CE;

[0335] Transmitting the first information in RRC signaling; transmitting the first information on a physical broadcast channel PBCH; transmitting the first information in a dedicated indication field of a physical downlink frame;

[0336] The first information is transmitted on a dedicated physical resource; and the first information is transmitted on a dedicated physical channel.

[0337] In one implementation, the implicit indication method includes at least one of the following: using a preamble or a dedicated sequence to carry the first information; using a CRC to carry the first information.

[0338] In one implementation, the first information is transmitted using at least one of the following transmission modes: physical layer control signaling, data to be transmitted, media access layer control unit MAC CE, and radio resource control RRC signaling.

[0339] In one implementation, the first information is transmitted in at least one of the following processes: a cell access process, a public message broadcast process, an inventory process, a command transmission process, and a data transmission process.

[0340] In the case of implementing the functions of the above integrated modules in the form of hardware, the embodiment of the present disclosure provides another structure of the communication device involved in the above embodiment. As shown in Figure 32, the communication device 320 includes: a memory 3201, a processor 3202, a communication interface 3203, and a bus 3204.

[0341] The memory 3201 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store dynamic information and instructions, an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0342] The processor 3202 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 3202 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processor 3202 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 3202 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0343] The communication interface 3203 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, or wireless local area network (WLAN).

[0344] In some embodiments, the memory 3201 may exist independently of the processor 3202. The memory 3201 may be connected to the processor 3202 via a bus 3204 and used to store instructions or program codes. When the processor 3202 calls and executes the instructions or program codes stored in the memory 3201, the information transmission method provided in the embodiments of the present disclosure can be implemented.

[0345] In some embodiments, the memory 3201 may also be integrated with the processor 3202 .

[0346] Bus 3204 can be an Extended Industry Standard Architecture (EISA) bus, for example. Bus 3204 can be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, FIG32 shows bus 3204 using only a single bold line. This does not imply that there is only one bus or only one type of bus.

[0347] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a computer, the computer executes the information transmission method described in any of the above embodiments.

[0348] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the present disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0349] An embodiment of the present disclosure provides a computer program product comprising instructions. When the computer program product is run on a computer, the computer is enabled to execute the information transmission method described in any one of the above embodiments.

[0350] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An information transmission method, applied to a first node, wherein, The method includes: Sending first information to a second node, where the first information includes cell information.

2. The method according to claim 1, wherein The cell information includes first cell information and / or second cell information; Wherein, the first cell information includes a cell identifier, and the second cell information includes a sub-cell identifier.

3. The method according to claim 1, wherein, The cell information includes first cell information, the first cell information is used to indicate whether the cell information includes second cell information, and the second cell information includes a cell identifier and / or a sub-cell identifier.

4. The method according to claim 1, wherein The first information is carried in downlink transmission information, where the downlink transmission information includes all downlink transmission information sent by the first node to the second node, or the downlink transmission information includes partial downlink transmission information sent by the first node to the second node.

5. The method according to claim 4, wherein, The transmission mode of the first information includes an explicit indication mode and / or an implicit indication mode.

6. The method according to claim 5, wherein The first information is carried in a frame of the downlink transmission information, and the frame includes at least one of the following: a first type of frame, a second type of frame, or a third type of frame; the first type of frame is a frame for transmitting the first information based on the explicit indication mode; the second type of frame is a frame transmitted based on the implicit indication mode; the third type of frame is a frame associated with a preset condition of the second node.

7. The method according to claim 6, wherein, The transmission mode of the first information is determined based on the frame type of the frame for transmitting the first information.

8. The method according to claim 7, wherein, When the frame type is the first type of frame, the transmission mode of the first information is the explicit indication mode; When the frame type is the second type of frame, the transmission mode of the first information is the implicit indication mode; Or When the frame type is the third type of frame, the transmission mode of the first information is the explicit indication mode and / or the implicit indication mode.

9. The method according to claim 8, wherein The first information is carried in a downlink command of the downlink transmission information, and the downlink command includes at least one of the following: a first downlink command or a second downlink command; the first downlink command includes at least one of the following: a paging command, an inventory command, an access command, an acknowledgment command, or an access response command; the second downlink command includes at least one of the following: transmission block size indication information, cyclic redundancy check code CRC information, command format identifier, synchronization signal index, access mask index, short message indication, or system information indication.

10. The method according to claim 9, wherein The transmission mode of the first information is determined based on the downlink command for transmitting the first information.

11. The method according to claim 10, wherein, When the downlink command is the first downlink command, the transmission mode of the first information is the explicit indication mode; When the downlink command is the second downlink command, the transmission mode of the first information is the implicit indication mode.

12. The method according to claim 11, wherein, The transmission mode of the first information is determined based on the state of the second node, and the state of the second node includes any one of the following: idle state, connected state, inactive state, inventory state, non-inventory state, pending inventory state, or post-inventory state.

13. The method according to claim 12, wherein, When the state of the second node is the idle state, the inactive state, the inventory state, or the to-be-inventoried state, the transmission mode of the first information is any one of the following: the explicit indication mode, the transmission mode based on the first type of frame, the transmission mode based on the third type of frame, or the transmission mode based on the first downlink command; When the state of the second node is the connected state, the non-inventory state, or the state after inventory completion, the transmission mode of the first information is any one of the following: the implicit indication mode, the transmission mode based on the second type of frame, the transmission mode based on the third type of frame, or the transmission mode based on the second downlink command.

14. The method according to claim 5, wherein, The explicit indication mode includes at least one of the following: Transmit the first information on the Physical Downlink Shared Channel (PDSCH); Transmit the first information on the Physical Downlink Control Channel (PDCCH); Transmit the first information through the Media Access Control layer Control Element (MAC CE); Transmit the first information in the Radio Resource Control (RRC) signaling; Transmit the first information on the Physical Broadcast Channel (PBCH); Transmit the first information in the proprietary indication field of the physical downlink frame; Transmit the first information on the proprietary physical resources; Or Transmit the first information on the proprietary physical channel.

15. The method according to claim 5, wherein The implicit indication mode includes at least one of the following: Carry the first information using a preamble or a dedicated sequence; or Carry the first information using the Cyclic Redundancy Check (CRC).

16. The method according to claim 1, wherein The first information is transmitted using at least one of the following transmission modes: physical layer control signaling, data to be transmitted, MAC CE, Radio Resource Control (RRC) signaling.

17. The method according to claim 1, wherein, The first information is transmitted in at least one of the following processes: cell access process, common message broadcast process, inventory process, command transmission process, data transmission process.

18. An information transmission method, applied to a second node, wherein, The method includes: Receiving first information sent by a first node, where the first information includes cell information.

19. The method according to claim 18, wherein, The cell information includes first cell information, and / or second cell information; Wherein, the first cell information includes a cell identifier, and the second cell information includes a sub-cell identifier.

20. The method according to claim 18, wherein, The cell information includes first cell information, the first cell information is used to indicate whether the cell information includes second cell information, and the second cell information includes a cell identifier, and / or a sub-cell identifier.

21. The method according to claim 18, wherein, The first information is carried in the downlink transmission information, and the downlink transmission information includes all the downlink transmission information sent by the first node to the second node, or the downlink transmission information includes part of the downlink transmission information sent by the first node to the second node.

22. The method according to claim 21, wherein, The transmission mode of the first information includes the explicit indication mode and / or the implicit indication mode.

23. The method according to claim 22, wherein, The first information is carried in a frame of the downlink transmission information, and the frame includes at least one of the following: a first type of frame, a second type of frame, or a third type of frame; the first type of frame is a frame for transmitting the first information based on the explicit indication mode; the second type of frame is a frame transmitted based on the implicit indication mode; the third type of frame is a frame associated with a preset condition of the second node.

24. The method according to claim 23, wherein, The transmission mode of the first information is determined based on the frame type of the frame for transmitting the first information.

25. The method according to claim 24, wherein when the frame type is the first type of frame, the transmission mode of the first information is the explicit indication mode; when the frame type is the second type of frame, the transmission mode of the first information is the implicit indication mode; or when the frame type is the third type of frame, the transmission mode of the first information is the explicit indication mode and / or the implicit indication mode.

26. The method according to claim 25, wherein The first information is carried in the downlink command of the downlink transmission information, and the downlink command includes at least one of the following: a first downlink command or a second downlink command; the first downlink command includes at least one of the following: a paging command, an inventory command, an access command, an acknowledgment command, or an access response command; the second downlink command includes at least one of the following: transmission block size indication information, cyclic redundancy check code CRC information, command format identifier, synchronization signal index, access mask index, short message indication, or system information indication.

27. The method according to claim 26, wherein The transmission mode of the first information is determined based on the downlink command for transmitting the first information.

28. The method according to claim 27, wherein when the downlink command is the first downlink command, the transmission mode of the first information is the explicit indication mode; or when the downlink command is the second downlink command, the transmission mode of the first information is the implicit indication mode.

29. The method according to claim 28, wherein, The transmission mode of the first information is determined based on the state of the second node, and the state of the second node includes any one of the following: idle state, connected state, inactive state, inventory state, non-inventory state, pending inventory state, or post-inventory state.

30. The method according to claim 29, wherein when the state of the second node is the idle state or the inactive state or the inventory state or the pending inventory state, the transmission mode of the first information is any one of the following: the explicit indication mode, the transmission mode based on the first type of frame, the transmission mode based on the third type of frame, or the transmission mode based on the first downlink command; or when the state of the second node is the connected state or the non-inventory state or the post-inventory state, the transmission mode of the first information is any one of the following: the implicit indication mode, the transmission mode based on the second type of frame, the transmission mode based on the third type of frame, or the transmission mode based on the second downlink command.

31. The method according to claim 22, wherein, The explicit indication mode includes at least one of the following: transmitting the first information on the physical downlink shared channel PDSCH; transmitting the first information on the physical downlink control channel PDCCH; transmitting the first information through the control unit MAC CE of the media access layer; transmitting the first information in the RRC signaling; transmitting the first information on the physical broadcast channel PBCH; transmitting the first information in the dedicated indication field of the physical downlink frame; transmitting the first information on dedicated physical resources; or Transmit the first information on a dedicated physical channel.

32. The method according to claim 22, wherein, The implicit indication method includes at least one of the following: Carry the first information by using a preamble or a dedicated sequence; or Carry the first information by using a CRC.

33. The method according to claim 18, wherein The first information is transmitted by using at least one of the following transmission methods: physical layer control signaling, data to be transmitted, MAC CE, radio resource control (RRC) signaling.

34. The method according to claim 18, wherein The first information is transmitted in at least one of the following processes: cell access process, common message broadcast process, inventory process, command transmission process, data transmission process.

35. A communication device, comprising: A memory and a processor; wherein, the memory is coupled to the processor; the memory is used for storing instructions executable by the processor; when the processor executes the instructions, it executes the method according to any one of claims 1-17 or 18-34.

36. A computer-readable storage medium, wherein, Computer instructions are stored on the computer-readable storage medium, and when the computer instructions run on a computer, the computer is caused to execute the method according to any one of claims 1-17 or 18-34.

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