Information transmission method, device, and storage medium

Abstract

The present application discloses an information transmission method, a device, and a storage medium. The method comprises: generating first signaling; and a first node transmitting the first signaling to a second node via a physical broadcast channel. The first signaling at least comprises one of the following information: additional demodulation reference signal configuration information and control header configuration information. The additional demodulation reference signal configuration information at least comprises one of the following information: indication information on whether an additional demodulation reference signal is transmitted, condition information on the transmission of the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal. The control header configuration information at least comprises one of the following information: indication information on whether a control header is transmitted, indication information on whether the control header needs to be blindly detected, resource information used by the control header, a modulation and coding scheme of the control header, content indication information carried by the control header, transmission power information of the control header, and a transmission period of the control header.

Description

Information transmission methods, equipment and storage media Technical Field

[0001] This application relates to the field of communication technology, and in particular to an information transmission method, device and storage medium. Background Technology

[0002] In mobile communication systems, the Demodulation Reference Signal (DMRS) plays a crucial role, primarily used for channel estimation. It estimates the channel's transmission characteristics, such as amplitude, phase, and delay, to aid the receiver in coherent demodulation, thereby ensuring correct data reception. To reduce demodulation and decoding latency, 5G NR employs a front-loaded design approach for the DMRS. Within each scheduling time unit, the DMRS first appears as close as possible to the start of scheduling. For example, in slot-based scheduling transmission, the front-loaded DMRS pilot is positioned immediately after the Physical Downlink Control Channel (PDCCH) region. Furthermore, to meet the channel estimation requirements of different mobility scenarios, the temporal density of the DMRS in 5G NR is configurable. In low-speed mobility scenarios, the DMRS temporal density is lower; for example, only the front-loaded DMRS is transmitted. In high-speed mobility scenarios, to better track channel changes, the DMRS temporal density needs to be increased, requiring the transmission of an additional demodulation reference signal (additional DMRS).

[0003] When transmitting system information in a broadcast or multicast manner, to ensure robust coverage and access performance, the default DMRS time density is generally relatively high. This means that when the time domain length of the data channel exceeds a certain value, an additional demodulation reference signal needs to be transmitted. However, different sites have different coverage requirements and access performance requirements. This fixed method of transmitting additional demodulation reference signals lacks flexibility and wastes resources. Furthermore, in 5G mobile communication systems, the blind detection scheme used in the physical downlink control channel increases terminal power consumption and lacks flexibility. Summary of the Invention

[0004] This application provides an information transmission method, device, and storage medium that can improve the flexibility of controlling information transmission.

[0005] To achieve the above objectives, embodiments of this application provide an information transmission method, including:

[0006] A first signaling message is generated, and the first node transmits the first signaling message to the second node via a physical broadcast channel. The first signaling message contains at least one of the following information: additional demodulation reference signal configuration information, and control header configuration information; wherein...

[0007] The additional demodulation reference signal configuration information includes at least one of the following: indication information on whether the additional demodulation reference signal is transmitted, condition information for transmitting the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal;

[0008] The control head configuration information includes at least one of the following: whether the control head sends an indication, whether the control head needs to be blindly detected, the resource information used by the control head, the modulation and coding mechanism of the control head, the content indication information carried by the control head, the transmission power information of the control head, and the transmission period of the control head.

[0009] To achieve the above objectives, embodiments of this application provide an information transmission method, including:

[0010] The second node receives the first signaling sent by the first node via a physical broadcast channel. The first signaling includes at least one of the following: additional demodulation reference signal configuration information, and control header configuration information; wherein...

[0011] The additional demodulation reference signal configuration information includes at least one of the following: indication information on whether the additional demodulation reference signal is transmitted, condition information for transmitting the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal;

[0012] The control head configuration information includes at least one of the following: whether the control head sends an indication, whether the control head needs to be blindly detected, the resource information used by the control head, the modulation and coding mechanism of the control head, the content indication information carried by the control head, the transmission power information of the control head, and the transmission period of the control head.

[0013] To achieve the above objectives, embodiments of this application provide an information transmission method, including:

[0014] A first indication is generated, and the first node sends the first indication to the second node through the physical downlink control channel. The first indication includes at least an indication of whether to send an additional demodulation reference signal.

[0015] To achieve the above objectives, embodiments of this application provide an information transmission method, including:

[0016] The second node receives first indication information sent by the first node through the physical downlink control channel. The first indication information includes at least indication information on whether to send an additional demodulation reference signal.

[0017] To achieve the above objectives, embodiments of this application provide an information transmission method, including:

[0018] A random access pilot indication information is generated. The first node sends the random access pilot indication information to the second node through the physical downlink channel. The random access pilot indication information includes at least one of the following: access pilot set information in which the physical data channel related to the second node does not need to send additional demodulation reference signals, or access pilot set information in which the physical data channel related to the second node needs to send additional demodulation reference signals.

[0019] To achieve the above objectives, embodiments of this application provide an information transmission method, including:

[0020] The second node receives random access pilot indication information sent by the first node through the physical downlink channel. The random access pilot indication information includes at least one of the following: access pilot set information in which the physical data channel related to the second node does not need to send additional demodulation reference signals, or access pilot set information in which the physical data channel related to the second node needs to send additional demodulation reference signals.

[0021] To achieve the above objectives, embodiments of this application provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the information transmission method as described in the embodiments of this application.

[0022] To achieve the above objectives, embodiments of this application provide a computer-readable storage medium storing a computer program thereon, characterized in that the program, when executed by a processor, implements the information transmission method as described in embodiments of this application.

[0023] This application discloses an information transmission method, device, and storage medium. A first signaling is generated, and a first node transmits the first signaling to a second node via a physical broadcast channel. The first signaling includes at least one of the following information: additional demodulation reference signal configuration information and control header configuration information. The additional demodulation reference signal configuration information includes at least one of the following: indication information on whether the additional demodulation reference signal is transmitted, condition information on the transmission of the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal. The control header configuration information includes at least one of the following: indication information on whether the control header is transmitted, indication information on whether blind detection of the control header is required, resource information used by the control header, modulation and coding mechanism of the control header, content indication information carried by the control header, transmission power information of the control header, and transmission period of the control header. The information transmission method provided in this application, where the first signaling indication includes additional demodulation reference signal configuration information and control header configuration information, can improve the flexibility of control information transmission, reduce terminal power consumption, and thus avoid resource waste. Attached Figure Description

[0024] Figure 1 is a flowchart of an information transmission method provided in an embodiment of this application;

[0025] Figure 2 is a schematic diagram of the temporal positional relationship between a pre-DMRS and an additional DMRS provided in an embodiment of this application;

[0026] Figure 3 is a schematic diagram illustrating the relationship between a control head and downlink control information provided in an embodiment of this application.

[0027] Figure 4 is a flowchart of an information transmission method provided in an embodiment of this application;

[0028] Figure 5 is a flowchart of an information transmission method provided in an embodiment of this application;

[0029] Figure 6 is a flowchart of an information transmission method provided in an embodiment of this application;

[0030] Figure 7 is a flowchart of an information transmission method provided in an embodiment of this application;

[0031] Figure 8 is a flowchart of an information transmission method provided in an embodiment of this application;

[0032] Figure 9 is a schematic diagram of the structure of an information transmission device provided in an embodiment of this application;

[0033] Figure 10 is a schematic diagram of the structure of an information transmission device provided in an embodiment of this application;

[0034] Figure 11 is a schematic diagram of the structure of an information transmission device provided in an embodiment of this application;

[0035] Figure 12 is a schematic diagram of the structure of an information transmission device provided in an embodiment of this application;

[0036] Figure 13 is a schematic diagram of the structure of an information transmission device provided in an embodiment of this application;

[0037] Figure 14 is a schematic diagram of the structure of an information transmission device provided in an embodiment of this application;

[0038] Figure 15 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0040] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0041] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustration in this application and has no inherent meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0042] Figure 1 is a flowchart of an information transmission method provided in an embodiment of this application. The method can be executed by an information transmission device, which is set in a first node, wherein the first node is a base station.

[0043] In high-speed mobile scenarios, in order to better track channel changes, the time density of DMRS needs to be increased, and additional demodulation reference signals need to be sent, as shown in Figure 2. Figure 2 is a schematic diagram of the temporal position relationship between the pre-DMRS and the additional DMRS.

[0044] As shown in Figure 1, the method includes the following steps:

[0045] S110, Generate the first signaling, and the first node sends the first signaling to the second node through the physical broadcast channel.

[0046] The first signaling message includes at least one of the following: additional demodulation reference signal configuration information, and control header configuration information. The first node is the base station, and the second node is the terminal. The base station generates the first signaling message and sends it to the terminal via a physical broadcast channel.

[0047] The additional demodulation reference signal configuration information includes at least one of the following: indication information on whether the additional demodulation reference signal is transmitted, condition information for transmitting the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal.

[0048] In one embodiment, when the indication information for whether to send an additional demodulation reference signal indicates that an additional demodulation reference signal needs to be sent, the first node transmits the additional demodulation reference signal when transmitting the physical downlink channel or receives the additional demodulation reference signal when receiving the physical uplink channel, according to the default configuration or a configuration negotiated with the second node. That is, the base station transmits the additional demodulation reference signal when transmitting the physical downlink channel or receives the additional demodulation reference signal when receiving the physical uplink channel, according to the default configuration or a configuration negotiated with the terminal. The advantage of this approach is that each cell can determine whether to send an additional demodulation reference signal based on its own actual situation, avoiding resource waste. For example, when a cell has a large coverage area, and the indication information for whether to send an additional demodulation reference signal indicates that an additional demodulation reference signal needs to be sent, then when the time domain length of the physical downlink data channel is greater than or equal to a specific value, an additional demodulation reference signal needs to be sent. This specific value can be the standard default configuration or negotiated between the base station and the terminal. For example, when the coverage area of ​​a cell is relatively small, if the indication information for whether to send an additional demodulation reference signal indicates that no additional demodulation reference signal needs to be sent, then the physical downlink data channel (e.g., the data channel carrying auxiliary system information) does not need to send an additional demodulation reference signal.

[0049] It should be noted that inclusion can be "explicit inclusion" (requiring a specific bit sequence to be clearly represented, for example, the first signaling includes three fields A, B, and C, with field C explicitly representing additional demodulation reference signal configuration information) or "implicit inclusion" (acting on other fields, for example, the first signaling includes three fields A, B, and C, with field C representing the cyclic redundancy check field, and the additional demodulation reference signal configuration information acts on field C, causing a change in the bit order within field C, and the terminal obtains the additional demodulation reference signal configuration information by analyzing the change in bit order).

[0050] Based on the above embodiments, when the indication information indicating whether an additional demodulation reference signal needs to be sent indicates that an additional demodulation reference signal needs to be sent, the transmission of the additional demodulation reference signal needs to further meet at least one of the following conditions: the time domain length occupied by the physical downlink or physical uplink channel associated with the additional demodulation reference signal (e.g., the additional demodulation reference signal is sent only when the time domain length is greater than a specific value), the modulation and coding mechanism of the physical downlink or physical uplink channel associated with the additional demodulation reference signal (e.g., when the modulation order is greater than or equal to 6), whether the physical downlink or physical uplink channel associated with the additional demodulation reference signal is retransmitted (e.g., retransmission is required), and the number of repetitions or repetition positions of the physical downlink or physical uplink channel associated with the additional demodulation reference signal (e.g., if it is repeated 4 times, the additional demodulation reference signal needs to be sent during the repetition process, or the additional demodulation reference signal needs to be sent during the second and fourth repetitions).

[0051] In one embodiment, the specified field or set of specified fields carried by the physical broadcast channel is processed based on additional demodulation reference signal configuration information. Optionally, the processing of the specified field or set of specified fields carried by the physical broadcast channel based on the additional demodulation reference signal configuration information can be performed by scrambling or sorting the specified field or set of specified fields carried by the physical broadcast channel based on the additional demodulation reference signal configuration information.

[0052] Specifically, based on the above embodiments, processing the specified field or set of specified fields carried by the physical broadcast channel based on the additional demodulation reference signal configuration information is essentially a way for the base station to carry specific information through "implicit inclusion." The advantage of this is reduced control overhead. For example, when field A carried by the physical broadcast channel contains three bits of cyclic redundancy check information (CRC) in sequence (b0, b1, b2), the indication information for whether the additional demodulation reference signal should be sent indicates that it is not necessary. Conversely, when field A carried by the physical broadcast channel contains three bits of CRC in sequence (b2, b1, b0), the indication information for whether the additional demodulation reference signal should be sent indicates that it is necessary. The terminal obtains the indication information for whether the additional demodulation reference signal should be sent by sorting the CRC information. Alternatively, the processing can also involve scrambling the specified field or set of specified fields, for example, changing 1 to 0 and 0 to 1.

[0053] In one embodiment, the demodulation reference signal carried on the physical broadcast channel is processed based on additional demodulation reference signal configuration information. This processing includes at least one of the following: a sequence of demodulation reference signals, resources of demodulation reference signals, and power of demodulation reference signals. For example, different sequences of demodulation reference signals correspond to different additional demodulation reference signal configuration information (e.g., sequence 1 indicates that no additional demodulation reference signal needs to be transmitted, and sequence 2 indicates that an additional demodulation reference signal needs to be transmitted if a certain time length is met), or different resources of the demodulation reference signal (e.g., using an odd-numbered subcarrier set to indicate that no additional demodulation reference signal needs to be transmitted, and an even-numbered subcarrier set to indicate that an additional demodulation reference signal needs to be transmitted) correspond to different additional demodulation reference signal configuration information, or different powers of the demodulation reference signal correspond to different additional demodulation reference signal configuration information. This approach is essentially a way for a base station to carry specific information through "implicit inclusion," which reduces control overhead.

[0054] In one embodiment, the first signaling includes at least one of the following: additional demodulation reference signal configuration information, control header configuration information, wherein the control header configuration information includes at least one of the following: indication information of whether the control header is sent, indication information of whether blind detection of the control header is required, resource information used by the control header, modulation and coding mechanism of the control header, content indication information carried by the control header, transmission power information of the control header, and transmission period of the control header. The advantage of this is that the base station can decide whether the terminal needs to only attempt to receive the control header based on actual service conditions, load, energy consumption, and other factors, and then receive downlink control information according to the indication of the control header, avoiding blind detection of the physical downlink control channel. For example, when the indication information of whether the control header is sent is yes, the terminal needs to receive the control header. As another example, when the indication information of whether blind detection of the control header is required is yes, the terminal needs to prioritize blind detection of the control header. For example, Figure 3 is a schematic diagram of the relationship between the control header and downlink control information in an embodiment of this application.

[0055] Based on the above embodiments, the control header includes at least one of the following information: information indicating the resources occupied by downlink control information, information indicating the number of bits in the downlink control information, information indicating whether blind detection of the physical downlink control channel is required, information indicating the modulation and coding mechanism of the downlink control information, and identification information related to the terminal or a set of terminals (third node) (the terminal can determine whether it needs to decode subsequent downlink control information based on whether the relevant identification contains content related to itself, thereby saving the terminal's power consumption). Optionally, when the control header indicates that blind detection of the physical downlink control information is required, the control header includes a potential resource area for blind detection of the physical downlink control channel. For example, the terminal decodes the downlink control information according to the content indicated by the control header, and the control header can also inform the terminal whether it needs to attempt blind detection of the physical downlink control channel. When the control header indicates that blind detection of the physical downlink control information is required, the control header includes a potential resource area for blind detection of the physical downlink control channel. This approach increases the flexibility of network control and allows for flexible adaptation between terminal power consumption and control overhead according to actual needs.

[0056] In one embodiment, Figure 4 is a flowchart of an information transmission method provided in this application embodiment. The method can be executed by an information transmission device, which is located in a second node, wherein the second node is a terminal.

[0057] As shown in Figure 4, the method includes the following steps:

[0058] S410, the second node receives the first signaling sent by the first node through the physical broadcast channel.

[0059] The first signaling instruction shall include at least one of the following: additional demodulation reference signal configuration information, and control header configuration information. The additional demodulation reference signal configuration information shall include at least one of the following: indication information indicating whether the additional demodulation reference signal has been transmitted, condition information indicating whether the additional demodulation reference signal has been transmitted, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal. The control header configuration information shall include at least one of the following: indication information indicating whether the control header has been transmitted, indication information indicating whether blind detection of the control header is required, resource information used by the control header, modulation and coding mechanism of the control header, content indication information carried by the control header, transmission power information of the control header, and transmission period of the control header.

[0060] In one embodiment, when the indication information for whether to send an additional demodulation reference signal indicates that an additional demodulation reference signal needs to be sent, the second node transmits the additional demodulation reference signal when sending the physical uplink channel or receives the additional demodulation reference signal when receiving the physical downlink channel, according to the default configuration or the negotiated configuration.

[0061] In one embodiment, the condition information for transmitting the additional demodulation reference signal includes at least one of the following: the time domain length occupied by the physical downlink or physical uplink channel associated with the additional demodulation reference signal, the modulation and coding mechanism of the physical downlink or physical uplink channel associated with the additional demodulation reference signal, whether the physical downlink or physical uplink channel associated with the additional demodulation reference signal is retransmitted, and the number of repetitions or repetition positions of the physical downlink or physical uplink channel associated with the additional demodulation reference signal.

[0062] In one embodiment, a specified field or a specified set of fields carried by the physical broadcast channel is processed based on additional demodulation reference signal configuration information.

[0063] In one embodiment, processing a specified field or set of specified fields carried by the physical broadcast channel based on additional demodulation reference signal configuration information includes:

[0064] Based on additional demodulation reference signal configuration information, the specified fields or specified set of fields carried by the physical broadcast channel are scrambled and sorted.

[0065] In one embodiment, the demodulation reference signal carried by the physical broadcast channel is processed based on additional demodulation reference signal configuration information; the processing includes at least one of the following: the sequence of the demodulation reference signal, the resources of the demodulation reference signal, and the power of the demodulation reference signal.

[0066] In one embodiment, the control header includes at least one of the following: an indication of the resources occupied by the downlink control information, an indication of the number of bits of the downlink control information, an indication of the modulation and coding mechanism of the downlink control information, an indication of whether blind detection of the physical downlink control channel is required, and identification information related to the third node.

[0067] In one embodiment, when the control header indicates that blind detection of physical downlink control information is required, the control header includes a potential resource region for blind detection of the physical downlink control channel.

[0068] Figure 5 is a flowchart of an information transmission method provided in an embodiment of this application. This method can be executed by an information transmission device located in a first node, wherein the first node is a base station. As shown in Figure 5, the method includes the following steps:

[0069] S510, generate first indication information, and the first node sends the first indication information to the second node through the physical downlink control channel.

[0070] The first indication information includes at least an indication of whether to send an additional demodulation reference signal. The first node is the base station, and the second node is the terminal; that is, the base station sends the first indication information to the terminal through the physical downlink control channel.

[0071] In one embodiment, when the first indication information indicates that no additional demodulation reference signal should be sent, the first node does not send an additional demodulation reference signal when sending a physical downlink channel to the second node or when receiving a physical uplink channel from the second node. That is, the base station does not need to send an additional demodulation reference signal when sending a physical downlink channel to the terminal, or the terminal does not need to send an additional demodulation reference signal when sending a physical uplink channel to the base station.

[0072] In one embodiment, when the first indication information indicates that an additional demodulation reference signal needs to be sent, the first node confirms whether the additional demodulation reference signal needs to be sent based on the default configuration or the configuration negotiated with the second node. That is, the base station confirms whether the additional demodulation reference signal needs to be sent based on the default configuration or the configuration negotiated between the base station and the terminal. For example, the base station configures a data channel time-domain length threshold for the terminal to send an additional demodulation reference signal via Radio Resource Control (RRC) signaling and / or Media Access Control (MAC) signaling. When the first indication information indicates that no additional demodulation reference signal needs to be sent, the terminal does not need to consider the configuration of the RRC signaling and / or MAC signaling and does not need to send an additional demodulation reference signal when transmitting data. When the first indication information indicates that an additional demodulation reference signal needs to be sent, the terminal needs to send the additional demodulation reference signal when the time-domain length of the data channel is greater than a specific threshold, based on the configuration of the RRC signaling and / or MAC signaling. This specific threshold is negotiated and confirmed by the base station and the terminal, or is a standard default configuration.

[0073] Figure 6 is a flowchart of an information transmission method provided in an embodiment of this application. This method can be executed by an information transmission device, which is located in a second node, wherein the second node is a terminal. As shown in Figure 6, the method includes the following steps:

[0074] S610, the second node receives the first indication information sent by the first node through the physical downlink control channel.

[0075] The first indication information includes at least an indication of whether to send an additional demodulation reference signal. The second node is the terminal, and the first node is the base station.

[0076] In one embodiment, when the first indication information indicates that no additional demodulation reference signal is to be sent, the second node does not send an additional demodulation reference signal when sending a physical uplink channel to the first node or when receiving a physical downlink channel sent by the first node.

[0077] In one embodiment, when the first indication information indicates that an additional demodulation reference signal needs to be sent, the second node confirms whether an additional demodulation reference signal needs to be sent based on the default configuration or the configuration negotiated with the first node.

[0078] Figure 7 is a flowchart of an information transmission method provided in an embodiment of this application. This method can be executed by an information transmission device located in a first node, wherein the first node is a base station. As shown in Figure 7, the method includes the following steps:

[0079] S710 generates random access pilot indication information, and the first node sends the random access pilot indication information to the second node through the physical downlink channel.

[0080] The random access pilot indication information includes at least one of the following: access pilot set information for which the physical data channel related to the second node does not need to send additional demodulation reference signals, and access pilot set information for which the physical data channel related to the second node needs to send additional demodulation reference signals.

[0081] In this system, the first node is the base station, and the second node is the terminal. The base station generates random access pilot indication information (RAMI). It sends this RAMI (which can be carried in a secondary information block) to the terminal via the physical downlink channel. The RAMI includes at least one of the following: access pilot set information for which the physical data channel related to the terminal does not require the transmission of additional demodulation reference signals; or access pilot set information for which the physical data channel related to the terminal requires the transmission of additional demodulation reference signals. This approach allows the terminal to determine whether additional demodulation reference signals are needed based on its own movement speed, particularly for the physical uplink data channel transmitted by the terminal to the base station, such as the transmission of message 3 (Msg3) during the four-step random access process.

[0082] In one embodiment, the requirement to send additional demodulation reference signals for the physical data channel related to the second node means that when the time domain length of the physical data channel is greater than or equal to a specific value, it is necessary to send relevant additional demodulation reference signals for the physical data channel, wherein the specific value is either a default configuration or negotiated with the second node.

[0083] For example, when a terminal needs to transmit additional demodulation reference signals on a physical data channel, it means that the time domain length of the physical data channel is greater than or equal to a specific value. In this case, the terminal needs to transmit relevant additional demodulation reference signals for the physical data channel related to the terminal. This specific value is either a default configuration or negotiated between the base station and the terminal. The terminal then selects an access pilot from the set of access pilots that require the transmission of additional demodulation reference signals. Such terminals are typically high-speed mobile terminals.

[0084] In one embodiment, after the second node fails to access the network N times by selecting an access pilot from the set of access pilots that do not require sending additional demodulation reference signals, the second node selects an access pilot from the set of access pilots that require sending additional demodulation reference signals for access, where N is an integer greater than or equal to 1.

[0085] For example, based on the above embodiments, after the terminal fails N times in selecting an access pilot from the set of access pilots that do not require sending additional demodulation reference signals, the terminal selects an access pilot from the set of access pilots that require sending additional demodulation reference signals for access. Here, N is an integer greater than or equal to 1. The advantage of this is that when the terminal misjudges its own movement speed—for example, it may be moving at high speed but misjudges it as moving at low speed, selecting an access pilot from the set of access pilots that do not require sending additional reference signals as a preamble, causing some information to fail to be transmitted during the access process, thus resulting in access failure. After a failure, the terminal selects an access pilot from the set of access pilots that require sending additional reference signals as a preamble, increasing the probability of successful access and shortening the access latency.

[0086] Figure 8 is a flowchart of an information transmission method provided in an embodiment of this application. This method can be executed by an information transmission device, which is located in a second node, wherein the second node is a terminal. As shown in Figure 8, the method includes the following steps:

[0087] S810, the second node receives the random access pilot indication information sent by the first node through the physical downlink channel.

[0088] In this system, the second node is the terminal, and the first node is the base station. The random access pilot indication information includes at least one of the following: access pilot set information where the physical data channel associated with the second node does not need to transmit additional demodulation reference signals; or access pilot set information where the physical data channel associated with the second node needs to transmit additional demodulation reference signals.

[0089] In one embodiment, the requirement to send additional demodulation reference signals for the physical data channel related to the second node means that when the time domain length of the physical data channel is greater than or equal to a specific value, it is necessary to send relevant additional demodulation reference signals for the physical data channel, wherein the specific value is either a default configuration or negotiated with the second node.

[0090] In one embodiment, after the second node fails to access the network N times by selecting an access pilot from the set of access pilots that do not require sending additional demodulation reference signals, the second node selects an access pilot from the set of access pilots that require sending additional demodulation reference signals for access, where N is an integer greater than or equal to 1.

[0091] Figure 9 is a schematic diagram of an information transmission device provided in an embodiment of this application. The device is disposed in a first node, which is a base station. As shown in Figure 9, the device includes:

[0092] The first signaling transmission module 910 is used to generate first signaling, which is transmitted from the first node to the second node via a physical broadcast channel. The first signaling includes at least one of the following: additional demodulation reference signal configuration information and control header configuration information; wherein the additional demodulation reference signal configuration information includes at least one of the following: indication information on whether the additional demodulation reference signal is transmitted, condition information on the transmission of the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal; the control header configuration information includes at least one of the following: indication information on whether the control header is transmitted, indication information on whether blind detection of the control header is required, resource information used by the control header, modulation and coding mechanism of the control header, content indication information carried by the control header, transmission power information of the control header, and transmission period of the control header.

[0093] Optionally, when the indication information for whether to send an additional demodulation reference signal indicates that an additional demodulation reference signal needs to be sent, the first node transmits the additional demodulation reference signal when sending the physical downlink channel or receives the additional demodulation reference signal when receiving the physical uplink channel, according to the default configuration or the configuration negotiated with the second node.

[0094] Optionally, the conditional information for transmitting the additional demodulation reference signal includes at least one of the following: the time domain length occupied by the physical downlink or physical uplink channel associated with the additional demodulation reference signal, the modulation and coding mechanism of the physical downlink or physical uplink channel associated with the additional demodulation reference signal, whether the physical downlink or physical uplink channel associated with the additional demodulation reference signal is retransmitted, and the number of repetitions or repetition positions of the physical downlink or physical uplink channel associated with the additional demodulation reference signal.

[0095] Optionally, it also includes: a processing module for: processing a specified field or a specified set of fields carried by the physical broadcast channel based on additional demodulation reference signal configuration information.

[0096] Optionally, the processing module is also used for:

[0097] Based on additional demodulation reference signal configuration information, the specified fields or specified set of fields carried by the physical broadcast channel are scrambled and sorted.

[0098] Optionally, the demodulation reference signal carried by the physical broadcast channel is processed based on additional demodulation reference signal configuration information; the processing includes at least one of the following: the sequence of the demodulation reference signal, the resources of the demodulation reference signal, and the power of the demodulation reference signal.

[0099] Optionally, the control header may contain at least one of the following: an indication of the resources occupied by the downlink control information, an indication of the number of bits of the downlink control information, an indication of the modulation and coding mechanism of the downlink control information, an indication of whether blind detection of the physical downlink control channel is required, and identification information related to the third node.

[0100] Optionally, when the control header indicates that blind detection of physical downlink control information is required, the control header may include a potential resource region for the blind detection physical downlink control channel.

[0101] Figure 10 is a schematic diagram of an information transmission device provided in an embodiment of this application. The device is disposed in a second node, which is a terminal. As shown in Figure 10, the device includes:

[0102] The first signaling receiving module 1001 is used by the second node to receive the first signaling sent by the first node through a physical broadcast channel. The first signaling includes at least one of the following information: additional demodulation reference signal configuration information and control header configuration information. The additional demodulation reference signal configuration information includes at least one of the following information: indication information on whether the additional demodulation reference signal is transmitted, condition information on the transmission of the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal. The control header configuration information includes at least one of the following information: indication information on whether the control header is transmitted, indication information on whether blind detection of the control header is required, resource information used by the control header, modulation and coding mechanism of the control header, content indication information carried by the control header, transmission power information of the control header, and transmission period of the control header.

[0103] Optionally, when the indication information for whether to send an additional demodulation reference signal indicates that an additional demodulation reference signal needs to be sent, the second node transmits the additional demodulation reference signal when sending the physical uplink channel or receives the additional demodulation reference signal when receiving the physical downlink channel, according to the default configuration or the negotiated configuration.

[0104] Optionally, the conditional information for transmitting the additional demodulation reference signal includes at least one of the following: the time domain length occupied by the physical downlink or physical uplink channel associated with the additional demodulation reference signal, the modulation and coding mechanism of the physical downlink or physical uplink channel associated with the additional demodulation reference signal, whether the physical downlink or physical uplink channel associated with the additional demodulation reference signal is retransmitted, and the number of repetitions or repetition positions of the physical downlink or physical uplink channel associated with the additional demodulation reference signal.

[0105] Optionally, it also includes: a processing module for processing a specified field or a specified set of fields carried by the physical broadcast channel based on additional demodulation reference signal configuration information.

[0106] Optionally, the processing module is also used for:

[0107] Based on additional demodulation reference signal configuration information, the specified fields or specified set of fields carried by the physical broadcast channel are scrambled and sorted.

[0108] Optionally, the demodulation reference signal carried by the physical broadcast channel is processed based on additional demodulation reference signal configuration information; the processing includes at least one of the following: the sequence of the demodulation reference signal, the resources of the demodulation reference signal, and the power of the demodulation reference signal.

[0109] Optionally, the control header may contain at least one of the following: an indication of the resources occupied by the downlink control information, an indication of the number of bits of the downlink control information, an indication of the modulation and coding mechanism of the downlink control information, an indication of whether blind detection of the physical downlink control channel is required, and identification information related to the third node.

[0110] Optionally, when the control header indicates that blind detection of physical downlink control information is required, the control header may include a potential resource region for the blind detection physical downlink control channel.

[0111] Figure 11 is a schematic diagram of an information transmission device provided in an embodiment of this application. The device is disposed in a first node, which is a base station. As shown in Figure 11, the device includes:

[0112] The first instruction information sending module 1101 is used to generate first instruction information. The first node sends the first instruction information to the second node through the physical downlink control channel. The first instruction information includes at least instruction information on whether to send an additional demodulation reference signal.

[0113] Optionally, when the first indication information indicates that no additional demodulation reference signal is to be sent, the first node does not send an additional demodulation reference signal when sending a physical downlink channel to the second node or when receiving a physical uplink channel sent by the second node.

[0114] Optionally, when the first indication information indicates that an additional demodulation reference signal needs to be sent, the first node confirms whether an additional demodulation reference signal needs to be sent based on the default configuration or the configuration negotiated with the second node.

[0115] Figure 12 is a schematic diagram of an information transmission device provided in an embodiment of this application. The device is disposed in a second node, which is a terminal. As shown in Figure 12, the device includes:

[0116] The first instruction information receiving module 1201 is used for the second node to receive the first instruction information sent by the first node through the physical downlink control channel. The first instruction information includes at least the instruction information on whether to send an additional demodulation reference signal.

[0117] Optionally, when the first indication information indicates that no additional demodulation reference signal is to be sent, the second node does not send an additional demodulation reference signal when sending a physical uplink channel to the first node or when receiving a physical downlink channel sent by the first node.

[0118] Optionally, when the first indication information indicates that an additional demodulation reference signal needs to be sent, the second node confirms whether an additional demodulation reference signal needs to be sent based on the default configuration or the configuration negotiated with the first node.

[0119] Figure 13 is a schematic diagram of an information transmission device provided in an embodiment of this application. The device is disposed in a first node, which is a base station. As shown in Figure 13, the device includes:

[0120] The random access pilot indication information sending module 1301 is used to generate random access pilot indication information. The first node sends the random access pilot indication information to the second node through the physical downlink channel. The random access pilot indication information includes at least one of the following: access pilot set information in which the physical data channel related to the second node does not need to send additional demodulation reference signals, or access pilot set information in which the physical data channel related to the second node needs to send additional demodulation reference signals.

[0121] Optionally, the requirement to send additional demodulation reference signals for the physical data channel related to the second node means that when the time domain length of the physical data channel is greater than or equal to a specific value, it is necessary to send relevant additional demodulation reference signals for the physical data channel. The specific value is either a default configuration or negotiated with the second node.

[0122] Optionally, after the second node fails to select an access pilot from the set of access pilots that do not require sending additional demodulation reference signals for access N times, the second node selects an access pilot from the set of access pilots that require sending additional demodulation reference signals for access, where N is an integer greater than or equal to 1.

[0123] Figure 14 is a schematic diagram of an information transmission device provided in an embodiment of this application. The device is disposed in a second node, which is a terminal. As shown in Figure 14, the device includes:

[0124] The random access pilot indication information receiving module 1401 is used for the second node to receive random access pilot indication information sent by the first node through the physical downlink channel. The random access pilot indication information includes at least one of the following: access pilot set information in which the physical data channel related to the second node does not need to send additional demodulation reference signals, or access pilot set information in which the physical data channel related to the second node needs to send additional demodulation reference signals.

[0125] Optionally, the requirement to send additional demodulation reference signals for the physical data channel related to the second node means that when the time domain length of the physical data channel is greater than or equal to a specific value, it is necessary to send relevant additional demodulation reference signals for the physical data channel. The specific value is either a default configuration or negotiated with the second node.

[0126] Optionally, after the second node fails to select an access pilot from the set of access pilots that do not require sending additional demodulation reference signals for access N times, the second node selects an access pilot from the set of access pilots that require sending additional demodulation reference signals for access, where N is an integer greater than or equal to 1.

[0127] In one embodiment, FIG15 is a schematic diagram of the structure of a computer device provided in an embodiment of this application. As shown in FIG15, the device provided in this application includes: a processor 510 and a memory 520. The number of processors 510 in the device can be one or more; FIG15 shows one processor 510 as an example. The number of memories 520 in the device can be one or more; FIG15 shows one memory 520 as an example. The processor 510 and memory 520 of the device can be connected via a bus or other means; FIG15 shows a connection via a bus as an example. In this embodiment, the device is a computer device.

[0128] The memory 520, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the device in any embodiment of this application. The memory 520 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required for at least one function; the data storage area may store data created based on the use of the device, etc. Furthermore, the memory 520 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 520 may further include memory remotely located relative to the processor 510, and these remote memories can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0129] The device provided above can be configured to execute the information transmission method provided in any of the above embodiments, and has the corresponding functions and effects.

[0130] The program stored in the corresponding memory 520 can be the program instructions / modules provided in the embodiments of this application for the information transmission method. The processor 510 executes one or more functional applications and data processing of the computer device by running the software program, instructions, and modules stored in the memory 520, thereby realizing the information transmission method applied in the above method embodiments. It is understood that when the above device is a receiving end, it can execute the information transmission method provided in any embodiment of this application and has the corresponding functions and effects.

[0131] This application embodiment also provides a storage medium containing computer-executable instructions. When executed by a computer processor, the computer-executable instructions are used to perform an information transmission method. The method includes: generating a first signaling; a first node transmitting the first signaling to a second node via a physical broadcast channel; the first signaling includes at least one of the following information: additional demodulation reference signal configuration information, and control header configuration information; wherein the additional demodulation reference signal configuration information includes at least one of the following information: indication information indicating whether the additional demodulation reference signal is transmitted, condition information for transmitting the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal; the control header configuration information includes at least one of the following information: indication information indicating whether the control header is transmitted, indication information indicating whether blind detection of the control header is required, resource information used by the control header, modulation and coding mechanism of the control header, content indication information carried by the control header, transmission power information of the control header, and transmission period of the control header. Alternatively, the second node receives a first signaling message sent by the first node via a physical broadcast channel. This first signaling message contains at least one of the following: additional demodulation reference signal configuration information and control header configuration information. The additional demodulation reference signal configuration information contains at least one of the following: indication information indicating whether the additional demodulation reference signal has been transmitted; condition information indicating whether the additional demodulation reference signal has been transmitted; resource information used by the additional demodulation reference signal; sequence information of the additional demodulation reference signal; and transmission power information of the additional demodulation reference signal. The control header configuration information contains at least one of the following: indication information indicating whether the control header has been transmitted; indication information indicating whether blind detection of the control header is required; resource information used by the control header; modulation and coding mechanism of the control header; content indication information carried by the control header; transmission power information of the control header; and transmission period of the control header. Alternatively, a first indication message is generated, and the first node sends this first indication message to the second node via a physical downlink control channel. This first indication message contains at least an indication message indicating whether to transmit the additional demodulation reference signal. Alternatively, the second node receives first indication information sent by the first node via a physical downlink control channel. This first indication information includes at least an indication of whether to send additional demodulation reference signals. Alternatively, random access pilot indication information is generated, and the first node sends this information to the second node via a physical downlink channel. This random access pilot indication information includes at least one of the following: access pilot set information where the physical data channel associated with the second node does not need to send additional demodulation reference signals; or access pilot set information where the physical data channel associated with the second node needs to send additional demodulation reference signals.Alternatively, the second node receives random access pilot indication information sent by the first node through a physical downlink channel. The random access pilot indication information includes at least one of the following: access pilot set information in which the physical data channel related to the second node does not need to send additional demodulation reference signals, or access pilot set information in which the physical data channel related to the second node needs to send additional demodulation reference signals.

[0132] Those skilled in the art will understand that the term user equipment covers any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0133] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0134] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0135] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on memory. Memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

[0136] The above description is merely an exemplary embodiment of this application and is not intended to limit the scope of protection of this application.

[0137] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0138] A detailed description of exemplary embodiments of this application has been provided above through exemplary and non-limiting examples. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, without departing from the scope of this application. Therefore, the proper scope of this application will be determined by the claims.

Claims

1. An information transmission method, comprising: A first signaling message is generated, and the first node transmits the first signaling message to the second node via a physical broadcast channel. The first signaling message contains at least one of the following information: additional demodulation reference signal configuration information, and control header configuration information; wherein... The additional demodulation reference signal configuration information includes at least one of the following: indication information on whether the additional demodulation reference signal is transmitted, condition information for transmitting the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal; The control head configuration information includes at least one of the following: whether the control head sends an indication, whether the control head needs to be blindly detected, the resource information used by the control head, the modulation and coding mechanism of the control head, the content indication information carried by the control head, the transmission power information of the control head, and the transmission period of the control head.

2. The method according to claim 1, wherein, When the indication information indicating whether the additional demodulation reference signal needs to be sent indicates that the additional demodulation reference signal needs to be sent, the first node transmits the additional demodulation reference signal when sending the physical downlink channel or receives the additional demodulation reference signal when receiving the physical uplink channel, according to the default configuration or the configuration negotiated with the second node.

3. The method according to claim 1, wherein, The conditional information for transmitting the additional demodulation reference signal includes at least one of the following: the time domain length occupied by the physical downlink or physical uplink channel associated with the additional demodulation reference signal, the modulation and coding mechanism of the physical downlink or physical uplink channel associated with the additional demodulation reference signal, whether the physical downlink or physical uplink channel associated with the additional demodulation reference signal is retransmitted, and the number of repetitions or repetition positions of the physical downlink or physical uplink channel associated with the additional demodulation reference signal.

4. The method according to claim 1, wherein, The specified fields or sets of specified fields carried by the physical broadcast channel are processed based on the additional demodulation reference signal configuration information.

5. The method according to claim 4, wherein, Based on the additional demodulation reference signal configuration information, the specified fields or specified set of fields carried by the physical broadcast channel are processed, including: Based on the additional demodulation reference signal configuration information, the specified fields or specified set of fields carried by the physical broadcast channel are scrambled and sorted.

6. The method according to claim 1, wherein, The demodulation reference signal carried by the physical broadcast channel is processed based on the additional demodulation reference signal configuration information; the processing includes at least one of the following: the sequence of the demodulation reference signal, the resources of the demodulation reference signal, and the power of the demodulation reference signal.

7. The method according to claim 1, wherein, The control header contains at least one of the following information: information indicating the resources occupied by the downlink control information, information indicating the number of bits of the downlink control information, information indicating the modulation and coding mechanism of the downlink control information, information indicating whether blind detection of the physical downlink control channel is required, and identification information related to the third node.

8. The method according to claim 7, wherein, When the control header indicates that blind detection of physical downlink control information is required, the control header includes a potential resource region of the blind detection physical downlink control channel.

9. An information transmission method, comprising: The second node receives the first signaling sent by the first node via a physical broadcast channel. The first signaling includes at least one of the following: additional demodulation reference signal configuration information, and control header configuration information; wherein... The additional demodulation reference signal configuration information includes at least one of the following: indication information on whether the additional demodulation reference signal is transmitted, condition information for transmitting the additional demodulation reference signal, resource information used by the additional demodulation reference signal, sequence information of the additional demodulation reference signal, and transmission power information of the additional demodulation reference signal; The control head configuration information includes at least one of the following: whether the control head sends an indication, whether the control head needs to be blindly detected, the resource information used by the control head, the modulation and coding mechanism of the control head, the content indication information carried by the control head, the transmission power information of the control head, and the transmission period of the control head.

10. The method according to claim 9, wherein, When the indication information indicating whether the additional demodulation reference signal needs to be sent indicates that the additional demodulation reference signal needs to be sent, the second node transmits the additional demodulation reference signal when sending the physical uplink channel or receives the additional demodulation reference signal when receiving the physical downlink channel, according to the default configuration or the negotiated configuration.

11. The method according to claim 9, wherein, The conditional information for transmitting the additional demodulation reference signal includes at least one of the following: the time domain length occupied by the physical downlink or physical uplink channel associated with the additional demodulation reference signal, the modulation and coding mechanism of the physical downlink or physical uplink channel associated with the additional demodulation reference signal, whether the physical downlink or physical uplink channel associated with the additional demodulation reference signal is retransmitted, and the number of repetitions or repetition positions of the physical downlink or physical uplink channel associated with the additional demodulation reference signal.

12. The method according to claim 9, wherein, The specified fields or sets of specified fields carried by the physical broadcast channel are processed based on the additional demodulation reference signal configuration information.

13. The method according to claim 12, wherein, Based on the additional demodulation reference signal configuration information, the specified fields or specified set of fields carried by the physical broadcast channel are processed, including: Based on the additional demodulation reference signal configuration information, the specified fields or specified set of fields carried by the physical broadcast channel are scrambled and sorted.

14. The method according to claim 9, wherein, The demodulation reference signal carried by the physical broadcast channel is processed based on the additional demodulation reference signal configuration information; the processing includes at least one of the following: the sequence of the demodulation reference signal, the resources of the demodulation reference signal, and the power of the demodulation reference signal.

15. The method according to claim 9, wherein, The control header contains at least one of the following information: information indicating the resources occupied by the downlink control information, information indicating the number of bits of the downlink control information, information indicating the modulation and coding mechanism of the downlink control information, information indicating whether blind detection of the physical downlink control channel is required, and identification information related to the third node.

16. The method according to claim 15, wherein, When the control header indicates that blind detection of physical downlink control information is required, the control header includes a potential resource region of the blind detection physical downlink control channel.

17. An information transmission method, comprising: A first indication is generated, and the first node sends the first indication to the second node through the physical downlink control channel. The first indication includes at least an indication of whether to send an additional demodulation reference signal.

18. The method according to claim 17, wherein, When the first indication information indicates that no additional demodulation reference signal is to be sent, the first node does not send an additional demodulation reference signal when sending a physical downlink channel to the second node or when receiving a physical uplink channel from the second node.

19. The method of claim 17, wherein, When the first indication information indicates that an additional demodulation reference signal needs to be sent, the first node confirms whether an additional demodulation reference signal needs to be sent based on the default configuration or the configuration negotiated with the second node.

20. An information transmission method, comprising: The second node receives first indication information sent by the first node through the physical downlink control channel. The first indication information includes at least indication information on whether to send an additional demodulation reference signal.

21. The method according to claim 20, wherein, When the first indication information indicates that no additional demodulation reference signal is to be sent, the second node does not send an additional demodulation reference signal when sending a physical uplink channel to the first node or when receiving a physical downlink channel sent by the first node.

22. The method according to claim 20, wherein, When the first indication information indicates that an additional demodulation reference signal needs to be sent, the second node confirms whether an additional demodulation reference signal needs to be sent based on the default configuration or the configuration negotiated with the first node.

23. An information transmission method, comprising: A random access pilot indication information is generated. The first node sends the random access pilot indication information to the second node through the physical downlink channel. The random access pilot indication information includes at least one of the following: access pilot set information in which the physical data channel related to the second node does not need to send additional demodulation reference signals, or access pilot set information in which the physical data channel related to the second node needs to send additional demodulation reference signals.

24. The method according to claim 23, wherein, The requirement to send additional demodulation reference signals for the physical data channel related to the second node means that when the time domain length of the physical data channel is greater than or equal to a specific value, it is necessary to send relevant additional demodulation reference signals for the physical data channel. The specific value is either a default configuration or negotiated with the second node.

25. The method according to claim 23, wherein, After the second node fails to access the network N times by selecting an access pilot from the set of access pilots that do not require sending additional demodulation reference signals, the second node selects an access pilot from the set of access pilots that require sending additional demodulation reference signals for access, where N is an integer greater than or equal to 1.

26. An information transmission method, comprising: The second node receives random access pilot indication information sent by the first node through the physical downlink channel. The random access pilot indication information includes at least one of the following: access pilot set information in which the physical data channel related to the second node does not need to send additional demodulation reference signals, or access pilot set information in which the physical data channel related to the second node needs to send additional demodulation reference signals.

27. The method according to claim 26, wherein, The requirement to send additional demodulation reference signals for the physical data channel related to the second node means that when the time domain length of the physical data channel is greater than or equal to a specific value, it is necessary to send relevant additional demodulation reference signals for the physical data channel. The specific value is either a default configuration or negotiated with the second node.

28. The method according to claim 26, wherein, After the second node fails to access the network N times by selecting an access pilot from the set of access pilots that do not require sending additional demodulation reference signals, the second node selects an access pilot from the set of access pilots that require sending additional demodulation reference signals for access, where N is an integer greater than or equal to 1.

29. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein, When the processor executes the program, it implements the information transmission method as described in any one of claims 1-28.

30. A computer-readable storage medium having a computer program stored thereon, wherein, When the program is executed by the processor, it implements the information transmission method as described in any one of claims 1-28.

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