CN115811750A

CN115811750A - Data transmission method, node, terminal and network side equipment

Info

Publication number: CN115811750A
Application number: CN202111083184.9A
Authority: CN
Inventors: 彭淑燕; 王欢; 刘进华
Original assignee: Vivo Software Technology Co Ltd
Current assignee: Vivo Software Technology Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2023-03-17
Also published as: WO2023040926A1

Abstract

The application discloses a data transmission method, a node, a terminal and network side equipment, which can improve the quality of wireless transmission and belong to the technical field of communication, and the data transmission method of the embodiment of the application comprises the following steps: acquiring multiplexing information, wherein the multiplexing information is used for determining a resource multiplexing mode; determining a resource multiplexing mode of the first node according to the multiplexing information; carrying out data transmission by adopting the resource multiplexing mode; or, receiving indication information from the second node; and transmitting data by adopting the resource multiplexing mode indicated by the indication information.

Description

Data transmission method, node, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a data transmission method, a node, a terminal and network side equipment.

Background

An Integrated Access Backhaul (IAB) system is a technology that is beginning to be established in the New Radio (NR) R16 standard. The IAB node includes a Distributed Unit (DU) function part and a Mobile Termination (MT) function part, and based on the MT function, an IAB node can find an upstream IAB node and establish a wireless connection with the DU of the upstream IAB node, which is called a backhaul link. After an IAB node establishes a complete backhaul link, the IAB node opens its DU function, and the DU provides cell service, i.e. the DU can provide access service for the MT. In an IAB system, all the DUs of an IAB node are connected to a Centralized Unit (CU), and the DUs and MTs are configured by the CU. The introduction of the IAB system solves the problem that the wired transmission network is not deployed in place when access points are densely deployed.

The IAB system relates to three resource Multiplexing modes, i.e., frequency Division Multiplexing (FDM), space Division Multiplexing (SDM), and Time Division Multiplexing (TDM). Currently, an IAB node in an IAB system configures a fixed resource multiplexing mode, and this implementation mode may result in low quality of wireless transmission.

Disclosure of Invention

The embodiment of the application provides a data transmission method, a node, a terminal and network side equipment, which can improve the quality of wireless transmission.

In a first aspect, a data transmission method is provided, where the method is applied to a first node, where the first node is an integrated access backhaul IAB node, and the method includes:

acquiring multiplexing information, wherein the multiplexing information is used for determining a resource multiplexing mode;

determining a resource multiplexing mode of the first node according to the multiplexing information;

adopting the resource multiplexing mode to carry out data transmission;

or the like, or, alternatively,

receiving indication information from the second node;

and transmitting data by adopting the resource multiplexing mode indicated by the indication information.

In a second aspect, a data transmission method is provided, which is applied to a second node, and the method includes:

sending multiplexing information to a first node, wherein the multiplexing information is information used for determining a resource multiplexing mode;

or the like, or, alternatively,

sending indication information to a first node; the indication information is used for indicating the resource multiplexing mode.

In a third aspect, a first node is provided, where the first node is an IAB node, and includes:

a first obtaining module, configured to obtain multiplexing information, where the multiplexing information is information used to determine a resource multiplexing mode;

a first determining module, configured to determine a resource multiplexing manner of the first node according to the multiplexing information;

the first transmission module is used for transmitting data by adopting the resource multiplexing mode;

or the like, or a combination thereof,

a first receiving module, configured to receive indication information from a second node;

and the second transmission module is used for transmitting data by adopting the resource multiplexing mode indicated by the indication information.

In a fourth aspect, a second node is provided, including:

a first sending module, configured to send multiplexing information to a first node, where the multiplexing information is information used to determine a resource multiplexing mode;

or the like, or a combination thereof,

the second sending module is used for sending the indication information to the first node; the indication information is used for indicating the resource multiplexing mode.

In a fifth aspect, a terminal is provided, the terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the data transmission method according to the first aspect or implementing the steps of the data transmission method according to the second aspect.

A sixth aspect provides a terminal, including a processor and a communication interface, where the communication interface is configured to acquire multiplexing information, where the multiplexing information is information used to determine a resource multiplexing manner, and the processor is configured to determine the resource multiplexing manner of the first node according to the multiplexing information; and transmitting data by adopting the resource multiplexing mode. Or, the communication interface is configured to receive indication information from the second node; the processor is configured to perform data transmission in a resource multiplexing manner indicated by the indication information.

In a seventh aspect, a terminal is provided, which includes a processor and a communication interface, where the communication interface is configured to acquire multiplexing information, and the processor is configured to send the multiplexing information to a first node, where the multiplexing information is information used to determine a resource multiplexing manner. Or the processor is used for sending indication information to the first node; the indication information is used for indicating the resource multiplexing mode.

In an eighth aspect, a network side device is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the steps of the data transmission method according to the first aspect, or implements the steps of the data transmission method according to the second aspect.

A ninth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to acquire multiplexing information, where the multiplexing information is information used to determine a resource multiplexing manner, and the processor is configured to determine the resource multiplexing manner of the first node according to the multiplexing information; and transmitting data by adopting the resource multiplexing mode. Or, the communication interface is configured to receive indication information from a second node; the processor is configured to perform data transmission in a resource multiplexing manner indicated by the indication information.

A tenth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to acquire multiplexing information, and the processor is configured to send the multiplexing information to a first node, where the multiplexing information is information used to determine a resource multiplexing manner. Or the processor is used for sending indication information to the first node; the indication information is used for indicating the resource multiplexing mode.

In an eleventh aspect, there is provided a readable storage medium on which a program or instructions are stored, which program or instructions, when executed by a processor, implement the steps of the data transmission method according to the first aspect, or implement the steps of the data transmission method according to the second aspect.

In a twelfth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the steps of the data transmission method according to the first aspect or to implement the steps of the data transmission method according to the second aspect.

In a thirteenth aspect, there is provided a computer program/program product stored on a non-volatile storage medium, the program/program product being executable by at least one processor to implement the steps of the data transmission method according to the first aspect, or to implement the steps of the data transmission method according to the second aspect.

In the embodiment of the present application, a first node (i.e., an IAB node) acquires multiplexing information, determines a resource multiplexing method of the first node according to the multiplexing information, and performs data transmission by using the determined resource multiplexing method. Or the first node receives the indication information from the second node and performs data transmission by adopting the resource multiplexing mode indicated by the indication information. Therefore, according to the technical scheme, the resource multiplexing mode of the IAB node can be determined based on the multiplexing information or the indication information of the second node, and compared with the traditional implementation mode that the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can realize that the flexible resource multiplexing mode is adopted for data transmission, so that the wireless transmission quality of the IAB node is improved.

Drawings

Fig. 1 is a schematic scene diagram of an IAB system provided according to an embodiment of the present application.

Fig. 2 is a schematic flow chart of a data transmission method according to an embodiment of the present application.

Fig. 3 is a schematic flowchart of a data transmission method according to another embodiment of the present application.

Fig. 4 is a schematic flow chart of a data transmission method according to still another embodiment of the present application.

Fig. 5 is a schematic flow chart of a data transmission method according to still another embodiment of the present application.

Fig. 6 is a schematic flowchart of a data transmission method according to still another embodiment of the present application.

Fig. 7 is a schematic flow chart of a data transmission method according to still another embodiment of the present application.

Fig. 8 is a schematic flow chart of a data transmission method according to still another embodiment of the present application.

Fig. 9 is a schematic block diagram of a first node according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a first node according to another embodiment of the present application.

Fig. 11 is a schematic block diagram of a second node according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a second node according to another embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 14 is a schematic hardware structure diagram of a terminal according to an embodiment of the present application.

Fig. 15 is a schematic block diagram of a network-side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein generally refer to a class and do not limit the number of objects, for example, a first object can be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-a) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes NR systems for exemplary purposes, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR systems, such as 6 th generation (6) ^th Generation, 6G) communication system.

Fig. 1 is a schematic scene diagram of an IAB system provided according to an embodiment of the present application. The IAB system includes at least a first node 10 and a second node 20, where the first node 10 is an IAB node, and the second node 20 may be at least one of a parent node of the first node 10, a child node of the first node 10, a CU of an IAB network to which the first node belongs, and a User Equipment (UE) accessing the first node.

It should be noted that fig. 1 only schematically illustrates a set of the first node 10 and the second node 20, and in an actual scenario, the IAB system may include a plurality of first nodes 10 and a plurality of second nodes 20, such as a parent IAB node, a child IAB node, a UE accessing each IAB node, and the like including a plurality of IAB nodes. The plurality of first nodes 10 and the plurality of second nodes 20 constitute an IAB system.

The data transmission method provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings by using some embodiments and application scenarios thereof.

In the data transmission method provided in the embodiment of the present application, a first node (i.e., an IAB node) acquires multiplexing information, determines a resource multiplexing mode of the first node according to the multiplexing information, and performs data transmission using the determined resource multiplexing mode. Or the first node receives the indication information from the second node and performs data transmission by adopting the resource multiplexing mode indicated by the indication information. That is, the first node may determine its resource multiplexing mode based on the obtained multiplexing information, or may determine its resource multiplexing mode based on the indication information sent by the second node. Therefore, according to the technical scheme of the embodiment of the application, the resource multiplexing mode of the IAB node can be determined based on the multiplexing information or the indication information of the second node, and compared with the conventional implementation mode in which the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can realize data transmission in a flexible resource multiplexing mode, so that the quality of wireless transmission of the IAB node is improved. The following describes in detail the determination methods of the two resource multiplexing modes of the first node by some embodiments.

Fig. 2 is a schematic flow chart of a data transmission method according to an embodiment of the present application. As shown in fig. 2, the data transmission method is applied in the first node, and includes the following steps S202-S206:

s202, multiplexing information is obtained, wherein the multiplexing information is information used for determining a resource multiplexing mode.

S204, determining the resource multiplexing mode of the first node according to the multiplexing information.

And S206, data transmission is carried out in a resource multiplexing mode.

In this embodiment, the multiplexing information may include at least one of the following: capability information, availability information, resource information, timing information, and measurement information. The resource information, timing information and measurement information may be predefined, pre-configured or configured, and may also be information supported by the first node (i.e. capability information of the first node).

The capability information is information for indicating that the first node supports at least one of a resource multiplexing mode, resource information, timing information and measurement information; or, the capability information is information for indicating that the first node does not support at least one of a resource multiplexing mode, resource information, timing information, and measurement information.

The available information is information indicating whether at least one of resource information, timing information, and measurement information is available.

The resource information may include at least one of: resource configuration, transmission power information of the first node, and beam information. The resource configuration may include at least one of a frequency domain resource and a time domain resource, such as a guard symbol configured in a time domain, a guard bandwidth configured in a frequency domain, and the like. The protection symbol is an unavailable time domain resource of the IAB node, the integrated access return mobile terminal IAB-MT or the integrated access return distributed unit IAB-DU, and the protection bandwidth is an unavailable frequency domain resource of the IAB node, the IAB-MT or the IAB-DU. The transmit power information may include at least one of a total transmit power of the first node, an IAB-MT power in the first node, and an IAB-DU power of the first node. The beam information may include at least one of available beams and unavailable beams of the first node, and when the beam information is predefined, preconfigured or configured, the number of available/unavailable beams, identification (ID), power, etc. information may be predefined, preconfigured or configured.

The timing information may include at least one of: timing modes and timing parameters.

The measurement information may include at least one of: interference measurement information of the first node interfered by other nodes, interference measurement information of the first node interfering other nodes, transmission error information of the first node and channel quality information of the first node. Wherein, the transmission error information comprises at least one item of transmission error times and the proportion of the transmission error times in the total transmission times; the Channel Quality Information includes at least one of Channel State Information (CSI), reference Signal Received Power (RSRP), reference Signal Received Quality (RSRQ), received Signal Strength Indicator (RSSI), signal to interference and Noise Ratio (SINR), signal to Noise Ratio (SNR), BLock Error Rate (BLER), and Bit Error Rate (BER).

In this embodiment, there are various ways for the first node to obtain the multiplexing information. Optionally, the first node may receive multiplexing information from the second node; optionally, the first node may also actively collect multiplexing information. If the first node receives the multiplexing information from the second node, the multiplexing information may be carried in the configuration signaling, i.e., the second node carries the multiplexing information in the configuration signaling and sends the configuration signaling to the first node. The configuration signaling may include at least one of: indicating an application protocol F1-AP signaling of F1, sending a back transmission adaptation BAP protocol data unit PDU signaling, a radio resource control RRC signaling, a multimedia access control unit MAC CE signaling and a downlink control information DCI signaling.

The resource multiplexing mode may include an FDM multiplexing mode, an SDM multiplexing mode, or a TDM multiplexing mode. The TDM multiplexing mode refers to that an MT and a DU of one IAB node transmit and receive on different time domain resources. Specifically, the IAB MT receives a Physical Downlink Shared Channel (PDSCH) from its parent IAB node or transmits a Physical Uplink Shared Channel (PUSCH) to its parent IAB node on a certain time domain resource; and, the IAB DU receives a PUSCH from or transmits a PDSCH to its child IAB node or a UE accessing the IAB node on another time domain resource.

The SDM multiplexing mode means that the MT and DU of one IAB node simultaneously transmit and receive on the same time-frequency resource. That is, the IAB MT sends a PUSCH to its parent IAB node, and the IAB DU sends a PDSCH to its child IAB node or a UE accessing the IAB node at the same time; or, the IAB MT receives the PDSCH from its parent IAB node, while the IAB DU receives the PUSCH from its child IAB node or the UE accessing the IAB node; or, the IAB MT sends PUSCH to its parent IAB node, and the IAB DU receives PUSCH from its child IAB node or UE accessing the IAB node at the same time; alternatively, the IAB MT receives the PDSCH from its parent IAB node, while the IAB DU transmits the PDSCH to its child IAB node or to a UE accessing the IAB node. Wherein the PDSCH and the PUSCH are transmitted on the same time-frequency domain resource.

The FDM multiplexing means that the MT and DU of one IAB node transmit and receive simultaneously on different frequency resources. That is, the IAB MT sends a PUSCH to its parent IAB node, and the IAB DU sends a PDSCH to its child IAB node or a UE accessing the IAB node at the same time; or, the IAB MT receives the PDSCH from its parent IAB node, while the IAB DU receives the PUSCH from its child IAB node or the UE accessing the IAB node; or, the IAB MT sends PUSCH to its parent IAB node, and the IAB DU receives PUSCH from its child IAB node or UE accessing the IAB node at the same time; alternatively, the IAB MT receives PDSCH from its parent IAB node, while the IAB DU transmits PDSCH to its child IAB node or UE accessing the IAB node. Wherein the PDSCH and the PUSCH are transmitted on the same time domain resources.

Based on the above definitions of the three multiplexing modes, the FDM multiplexing mode or the SDM multiplexing mode may include at least one of the following:

both the DU of the first node and the MT of the first node are used for sending data; or as a Multiplexing mode Case a (Multiplexing Case a);

the DU of the first node and the MT of the first node are both used for receiving data; or as multiplex mode Case B (Multiplexing Case B);

the DU of the first node is used for transmitting data, and the MT of the first node is used for receiving data; or as multiplex mode Case C (Multiplexing Case C); and (c) a second step of,

the DU of the first node is used for receiving data, and the MT of the first node is used for sending data; or as a Multiplexing mode Case D (Multiplexing Case D).

Alternatively, it can be considered that the multiplexing mode in the case of FDM/SDM between the DU and the MT is as follows:

multiplexing mode 1 (SDM TX): MT TX (i.e., transmission), DU TX;

multiplexing mode 2 (SDM RX): MT RX (i.e., reception), DU RX;

multiplexing mode 3 (FDM TX): MT TX, DU TX;

multiplexing mode 4 (FDM RX): MT RX, DU RX;

multiplexing scheme 5 (MPTR UL): MT TX, DU RX;

multiplexing mode 6 (MPTR DL): MT RX, DU TX;

in this embodiment, the first node (i.e., the IAB node) acquires the multiplexing information, determines the resource multiplexing mode of the first node according to the multiplexing information, and performs data transmission by using the determined resource multiplexing mode. The method and the device for the wireless transmission of the IAB node enable the resource multiplexing mode of the IAB node to be determined based on the multiplexing information, and compared with the traditional implementation mode that the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can realize the data transmission in a flexible resource multiplexing mode, so that the wireless transmission quality of the IAB node is improved.

The "resource multiplexing method" in the above embodiments may include a first multiplexing method or a second multiplexing method. And when the multiplexing information does not meet the specific condition, the first node determines that the resource multiplexing mode is a first multiplexing mode. Wherein the first multiplexing mode and the second multiplexing mode are different.

For the timing mode: a plurality of transmission modes for the synchronization of the IAB nodes are defined in the IAB, for example, seven schemes (i.e., corresponding to seven transmission modes, or seven timing modes) for the synchronization of the IAB nodes are defined in the research stage of R16. The data transmission modes in this application include transmission modes corresponding to seven schemes defined by R16, but are not limited to these modes, and scheme 1, scheme 6, and scheme 7 are described herein, specifically as follows:

in scheme 1 (i.e., case 1), the DU TX of an IAB node is aligned to the TX of a parent IAB node (in this case, the parent IAB node may be a base station) in a time domain unit, or the DU TX is aligned to the DU TX of the parent IAB node (in this case, the parent IAB node may be one IAB node) in a time domain unit, where the parent IAB node is the parent node of the IAB node.

In scheme 6 (i.e., case 6), the MT TX and the DU TX of the IAB node are aligned in a time domain unit, or the MT TX and the DU TX operate simultaneously (i.e., the MT and the DU transmit data simultaneously); and the DU TX of the IAB node is aligned with the TX timing of the father IAB node in a time domain unit, or the DU TX of the IAB node is aligned with the DU TX timing of the father IAB node in a time domain unit.

In scheme 7 (i.e., case 7), MT RX and DU RX of the IAB node are aligned in time domain unit, or MT RX and DU RX operate simultaneously; and, the DU RX of the IAB node aligns with the RX timing of the parent IAB node in the time domain unit, or the DU RX of the IAB node aligns with the DU RX timing of the parent IAB node in the time domain unit, etc.

In one embodiment, the first multiplexing mode may be a default resource multiplexing mode, and the default resource multiplexing mode may be a predefined, preconfigured, configured, or indicated resource multiplexing mode. "predefined, preconfigured, configured, or indicated" refers to at least one of predefined, preconfigured, configured, and indicated, wherein predefined may be through a protocol, and preconfigured, configured, or indicated through information or signaling. If the pre-configuration, or indication is performed by using a signaling manner, the signaling may be an application Protocol (F1-AP) signaling indicating F1, a Backhaul Adaptation Protocol (BAP) Protocol Data Unit (PDU) signaling, a Radio Resource Control (RRC) signaling, a Media Access Control (MAC) Control Unit (Control Element, CE) signaling, and a Downlink Control Information (DCI) signaling. It should be noted that, in other embodiments of the present application, unless otherwise specified, "predefined, preconfigured, configured, or indicated" means the same as in the present embodiment.

In one embodiment, the first multiplexing mode includes a TDM multiplexing mode, and the second multiplexing mode includes an FDM/SDM multiplexing mode.

In one embodiment, the first multiplexing mode and the second multiplexing mode may be different multiplexing information in the same resource multiplexing mode. For example, the first multiplexing mode is FDM/SDM case a, and the second multiplexing mode is FDM/SDM case x, where x is different from a, and case a and case x respectively represent different timing modes.

In an embodiment, when determining the resource multiplexing method, the first node may determine that the resource multiplexing method is the first multiplexing method or the second multiplexing method according to the multiplexing information, or may determine to switch the resource multiplexing method from the second multiplexing method to the first multiplexing method when the current resource multiplexing method is the second multiplexing method. Here, the level of the second multiplexing method is higher than the level of the first multiplexing method, and it is also understood that the requirement of the second multiplexing method on the condition to be satisfied by the multiplexing information is higher than the requirement of the first multiplexing method on the condition to be satisfied by the multiplexing information.

In this embodiment, the resource multiplexing manner of the IAB node can be determined based on the multiplexing information or the indication information of the second node, and compared with a conventional implementation manner in which the IAB node can only adopt one configured resource multiplexing manner, the IAB node in this embodiment can implement data transmission in a flexible resource multiplexing manner, thereby improving the quality of wireless transmission of the IAB node.

Or, the IAB node can determine to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode based on the multiplexing information or the indication information of the second node, and compared with a conventional implementation mode in which the IAB node can only adopt one configured resource multiplexing mode, the IAB node can not only realize flexible switching of the resource multiplexing mode, but also ensure that the IAB node is switched to the first multiplexing mode when the second multiplexing mode is not applicable or not supported. For example, in the R17 standard, if the IAB node is configured in the FDM/SDM multiplexing mode, but some parameters (such as resource configuration, timing information, interference information, and the like) of the IAB node do not satisfy the condition matching the FDM/SDM multiplexing mode, the operation performance of the IAB system will be affected if the IAB node is continuously maintained in the FDM/SDM multiplexing mode, but the operation performance of the IAB system will be inevitably improved if the IAB node is switched to the TDM multiplexing mode. Therefore, the embodiment can improve the wireless transmission quality and the working performance to a great extent by flexibly switching between the second multiplexing mode and the first multiplexing mode.

In one embodiment, when the first node determines to switch the resource multiplexing mode, it may switch between different resource multiplexing modes, such as switching from the second multiplexing mode to the first multiplexing mode as described above. The multiplexing information can be switched in the same resource multiplexing mode. For example, the second multiplexing mode is an FDM/SDM multiplexing mode, and if the first node determines to switch the resource multiplexing mode, the first timing mode (e.g., case6 or case 7) in the FDM/SDM multiplexing mode may be switched to the second timing mode (e.g., case 1), or the first beam information (e.g., the first beam ID) in the FDM/SDM multiplexing mode may be switched to the second beam information (e.g., the second beam ID); and so on.

How the first node determines the resource multiplexing mode according to different multiplexing information is described in detail through multiple embodiments. In the following embodiments, the second multiplexing mode is a resource multiplexing mode adopted before determining the resource multiplexing mode of the first node, the first multiplexing mode may be a TDM multiplexing mode, and the second multiplexing mode may be an FDM/SDM multiplexing mode.

In one embodiment, the multiplexing information includes capability information, which is information indicating that the first node supports at least one of a resource multiplexing mode, resource information, timing information, and measurement information; or, the capability information is information for indicating that the first node does not support at least one of a resource multiplexing mode, resource information, timing information, and measurement information.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the capability information satisfies the first condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the capability information does not meet the first condition, determining that the resource multiplexing mode of the first node is a second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the capability information meets a first condition, the first node determines to switch the resource multiplexing mode from a second multiplexing mode to a first multiplexing mode; and if the capability information does not meet the first condition, the first node keeps the second multiplexing mode.

Wherein the first condition may include at least one of the following a1-a 3:

a1, predefining, preconfiguring, configuring or indicating that the second multiplexing mode is disabled.

and a2, the first node only supports the first multiplexing mode.

and a3, the first node does not support the second multiplexing mode.

For example, the capability information satisfies: the first node only supports the TDM multiplexing mode, or the first node does not support the FDM/SDM multiplexing mode, or predefining, preconfiguring, configuring, or indicating that the FDM/SDM multiplexing mode is disabled, the multiplexing mode of the first node is determined to be the TDM multiplexing mode. And if the current resource multiplexing mode of the first node is the FDM/SDM multiplexing mode, switching (backing) the resource multiplexing mode from the FDM/SDM multiplexing mode to the TDM multiplexing mode.

In one embodiment, the multiplexing information includes available information, which is information indicating whether at least one of resource information, timing information, and measurement information is available.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the available information satisfies the second condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the available information does not meet the second condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the available information meets a second condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the available information does not meet the second condition, the first node keeps the second multiplexing mode.

Wherein the second condition comprises at least one of the following b1 and b 2:

b1, at least one item of resource information, timing information and measurement information in the first multiplexing mode is available.

b2, at least one of the resource information, the timing information and the measurement information in the second multiplexing mode is unavailable.

In one embodiment, the multiplexing information includes resource information including a resource configuration. The resource configuration may include frequency domain resources, time domain resources, or time and frequency domain resources.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the resource configuration satisfies the third condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the resource configuration does not meet the third condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the resource configuration meets a third condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the resource allocation does not meet the third condition, the first node keeps the second multiplexing mode.

Wherein the third condition comprises at least one of the following c1-c 5:

and c1, the frequency domain resources are effective and are compatible with the resource allocation of the first multiplexing mode.

c2, indicating that the frequency domain resources are invalid.

c3, the frequency domain resources on the frequency domain are predefined, preconfigured, configured or indicated to be of the same configuration.

c4, the first node does not expect that the frequency domain resources are configured to be different parameters on the same time domain unit. And c5, configuring the frequency domain resources expected by the first node to be the same parameters on the same time domain unit.

In one embodiment, the multiplexing information comprises resource information including transmit power information of the first node. The transmit power information may include at least one of a total transmit power of the first node, an IAB-MT power in the first node, and an IAB-DU power of the first node.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the transmission power information of the first node satisfies the fourth condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the sending power information of the first node does not meet the fourth condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the transmission power information of the first node meets a fourth condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the transmission power information of the first node does not meet the fourth condition, the first node keeps the second multiplexing mode.

Wherein the fourth condition includes at least one of the following d1-d 4:

and d1, predefining, preconfiguring, configuring or indicating the transmission power information to be the transmission power information in the first multiplexing mode.

d2, the total transmission power or the maximum transmission power of the first node is larger than or equal to a first power threshold value.

d3, at least one of the IAB-MT power and the maximum transmit power of the IAB-MT is greater than or equal to a second power threshold value. And the number of the first and second groups,

d4, at least one of the power of the IAB-DU and the maximum transmit power of the IAB-DU is greater than or equal to a third power threshold value.

The first power threshold, the second power threshold, and the third power threshold may be the same or different, which is not limited in this embodiment. The first, second, or third power thresholds may include at least one of: a predefined, preconfigured, configured or indicated value; and a value determined according to a predefined, preconfigured, configured or indicated first rule. Wherein the first rule is a rule for determining a first power threshold value, a second power threshold value, or a third power threshold value.

In one embodiment, the multiplexing information includes resource information including beam information of the first node. The beam information may include at least one of available beams and unavailable beams of the first node, and when the beam information is predefined, preconfigured or configured, information of the number of available/unavailable beams, ID, power, etc. may be predefined, preconfigured or configured.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the beam information of the first node satisfies the fifth condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the beam information of the first node does not meet the fifth condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the beam information of the first node meets a fifth condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the beam information of the first node does not meet the fifth condition, the first node keeps the second multiplexing mode.

Wherein the fifth condition comprises at least one of the following e1, e2, and e 3:

e1, predefining, pre-configuring, configuring or indicating the beam information to be the beam information in the first multiplexing mode.

e2, the number of available beams predefined, preconfigured, configured or indicated is zero.

e3, none of the predefined, preconfigured, configured or indicated beams are available beams.

In one embodiment, the multiplexing information includes timing information, which may include at least one of a timing mode and a timing parameter.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the timing information satisfies the sixth condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the timing information does not meet the sixth condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the timing information meets a sixth condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the timing information does not meet the sixth condition, the first node keeps the second multiplexing mode.

Wherein the sixth condition includes at least one of the following f1-f 5:

f1, predefining, pre-configuring, configuring or indicating the timing information to be the timing information in the first multiplexing mode.

f2, the first node only supports the timing information in the first multiplexing mode.

f3, the first node does not support the timing information in the second multiplexing mode.

f4, the predefined, preconfigured, configured or indicated timing information is different from the first node enabled timing information. And the number of the first and second groups,

and f5, using the indication value corresponding to the timing information to indicate the first multiplexing mode.

The indication value corresponding to the timing information may be a code point, for example, when the indication value is a first code point "1", the indication is a first multiplexing mode; when the indication value is a second code point "0", the second multiplexing mode is indicated. Of course, the values of the code points are only listed, and in practical application, only the corresponding relationship between the indication value of the timing information and the resource multiplexing mode needs to be predefined.

In this embodiment, the timing information and the resource multiplexing mode may be in a one-to-one or many-to-one mapping relationship, that is, one or more types of timing information may exist in the same resource multiplexing mode. For example, the timing mode in the FDM/SDM multiplexing mode may include case6, case7, and case x, where case6 corresponds to the MT and DU being simultaneously transmitted in the FDM/SDM multiplexing mode, case7 corresponds to the MT and DU being simultaneously received in the FDM/SDM multiplexing mode, and case x corresponds to the MT and DU being simultaneously transmitted and received (i.e., one transmitted and the other received) in the FDM/SDM multiplexing mode. The timing pattern in the TDM multiplexing scheme includes case 1.

In the above embodiment, when determining to switch the resource multiplexing mode, the first node may switch between different resource multiplexing modes, and may also switch the multiplexing information within the same resource multiplexing mode. Therefore, based on the above listed mapping relationship between the timing information and the resource multiplexing manner, the first node may switch the timing mode (case 6, case7, or case x) in the FDM/SDM multiplexing manner to the timing mode case1 in the TDM multiplexing manner, so as to implement switching between different resource multiplexing manners; or, the first node may switch the timing mode case6 in the FDM/SDM multiplexing mode to the timing mode case7 in the FDM/SDM multiplexing mode, so as to implement switching between different timing information in the same resource multiplexing mode.

When determining the resource multiplexing method according to whether the timing information satisfies the sixth condition, the resource multiplexing method may also be determined based on the above listed mapping relationship between the timing information and the resource multiplexing method. Taking the condition f3 (i.e., the first node does not support the timing information in the second multiplexing mode) as an example, if the first node does not support the cases 6, 7, and x in the FDM/SDM multiplexing mode, the FDM/SDM multiplexing mode is switched to the TDM multiplexing mode. Taking the condition f2 (that is, the first node only supports the timing information in the first multiplexing mode) as an example, if the first node only supports case1 in the TDM multiplexing mode, it is determined that the resource multiplexing mode of the first node is the TDM multiplexing mode.

In one embodiment, the multiplexing information includes measurement information, which may include at least one of interference measurement information that the first node is interfered by other nodes and interference measurement information that the first node interferes with other nodes. The interference measurement information may be characterized as an interference measurement value.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the multiple pieces of interference measurement information satisfy the seventh condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the interference measurement information does not meet the seventh condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the plurality of interference measurement information meet a seventh condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the interference measurement information does not meet the seventh condition, the first node keeps the second multiplexing mode.

Wherein the seventh condition comprises at least one of the following g1, g2, and g 3:

and g1, predefining, pre-configuring, configuring or indicating the interference measurement information to be the interference measurement information in the first multiplexing mode.

g2, the interference measurement value is greater than or equal to the first measurement threshold value.

g3, the interference measurement value configured, indicated or notified by the second node is greater than or equal to the second measurement threshold value.

The first measurement threshold and the second measurement threshold may be the same or different, and are not limited in this application. The first measurement threshold value or the second measurement threshold value may include at least one of: a predefined, preconfigured, configured, or indicated value; and a value determined according to a predefined, preconfigured, configured or indicated second rule. Wherein the second rule is a rule for determining the first measurement threshold value or the second measurement threshold value.

In one embodiment, the multiplexing information comprises measurement information, which may comprise transmission error information of the first node. The transmission error information may include at least one of the number of transmission errors and a ratio of the number of transmission errors to the total number of transmissions.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the transmission error information satisfies the eighth condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the transmission error information does not meet the eighth condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the transmission error information meets an eighth condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the transmission error information does not meet the eighth condition, the first node keeps the second multiplexing mode.

Wherein the eighth condition includes at least one of the following h1, h2, and h 3:

h1, predefining, preconfiguring, configuring or indicating that the transmission error information is the transmission error information in the first multiplexing mode.

h2, the transmission error times are larger than or equal to the first transmission threshold value.

h3, the ratio of the transmission error times in the total transmission times is larger than or equal to a second transmission threshold value.

The first transmission threshold and the second transmission threshold may be the same or different, and this is not limited in this application. The first transmission threshold or the second transmission threshold may include at least one of: a predefined, preconfigured, configured, or indicated value; and a value determined according to a predefined, preconfigured, configured or indicated third rule. Wherein the third rule is a rule for determining the first transmission threshold value or the second transmission threshold value.

In one embodiment, the multiplexing information comprises measurement information, which may comprise channel quality information of the first node. The channel quality information may include at least one of CSI, RSRP, RSRQ, RSSI, SINR, SNR, BLER, and BER.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the channel quality information satisfies the ninth condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the channel quality information does not meet the ninth condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the channel quality information meets a ninth condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the channel quality information does not meet the ninth condition, the first node keeps the second multiplexing mode.

Wherein the ninth condition comprises at least one of the following i1-i 4:

i1, predefining, preconfiguring, configuring or indicating the channel quality information to be the channel quality information in the first multiplexing mode.

i2, the CSI is smaller than a first parameter threshold value; wherein the CSI includes at least one of a Channel Quality Indicator (CQI), a Rank Indicator (RI), and a Precoding Matrix Indicator (PMI).

i3, at least one of RSRP, RSRQ, SINR and SNR is less than the second parameter threshold value. And the number of the first and second groups,

i4, at least one of RSSI, BLER and BER is greater than or equal to a third parameter threshold value.

The first parameter threshold value, the second parameter threshold value, and the third parameter threshold value may be the same or different, and this is not limited in this application. The first parameter threshold value, the second parameter threshold value, or the third parameter threshold value may include at least one of: a predefined, preconfigured, configured, or indicated value; and a value determined according to a predefined, preconfigured, configured or indicated third rule. Wherein the third rule is a rule for determining the first parameter threshold value, the second parameter threshold value, or the third parameter threshold value.

In one embodiment, the multiplexing information may be preconfigured, configured or indicated using configuration signaling, i.e. the multiplexing information is carried in at least one configuration signaling. The configuration signaling may be at least one of F1-AP signaling, BAP PDU signaling, RRC signaling, MAC CE signaling, and DCI signaling. Since there may be abnormal conditions, such as transmission failure, reception failure, demodulation failure, etc., in the transmission of the configuration signaling, the first node may determine the resource multiplexing manner according to the transmission condition of the configuration signaling.

In this embodiment, in a scenario where the first node determines the resource multiplexing mode according to the multiplexing information, if the configuration signaling satisfies the tenth condition, the resource multiplexing mode of the first node is determined to be the first multiplexing mode; and if the configuration signaling does not meet the tenth condition, determining that the resource multiplexing mode of the first node is the second multiplexing mode.

In a scene that the first node switches the resource multiplexing mode according to the multiplexing information, if the configuration signaling meets a tenth condition, the first node determines to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; and if the configuration signaling does not meet the tenth condition, the first node keeps the second multiplexing mode.

Wherein the tenth condition comprises at least one of the following j1-j 3:

j1, at least one configuration signaling is not sent to the first node.

j2, the first node does not receive at least one configuration signaling. And the number of the first and second groups,

j3, the first node fails to demodulate the at least one configuration signaling.

In an embodiment, when the resource multiplexing manner of the first node is determined according to the multiplexing information, a parameter corresponding to the resource multiplexing manner of the first node may be determined, and then the parameter corresponding to the resource multiplexing manner is adopted for data transmission. The parameter corresponding to the resource multiplexing mode may include at least one of the following: resource parameters, timing parameters, guard symbol parameters, and guard bandwidth parameters.

Wherein the resource parameter may include at least one of a resource configuration, a transmission power parameter of the first node, and a beam parameter, and the resource configuration may include a frequency domain resource or a time domain resource. The transmit Power parameters may include maximum transmit Power, power Headroom Report (PHR), and Power Spectral Density (PSD), the beam parameters may include at least one of a beam index (beam index), a physical time-frequency resource mapping (CSI-RS resource), a channel Sounding Reference Signal (SRS) resource, a Transmission Configuration Indicator (TCI) status, whether a beam is available or not. The guard symbol parameter may include at least one of a guard symbol type, a guard symbol size, and a guard symbol position. The guard bandwidth parameter may include at least one of a guard bandwidth size and a guard bandwidth location.

In one embodiment, after determining the resource multiplexing mode of the first node according to the multiplexing information, the first node sends notification information to the second node, where the notification information is used to instruct the first node to perform data transmission in the resource multiplexing mode. And after receiving the notification information, the second node learns that the first node adopts a determined resource multiplexing mode for data transmission.

In an embodiment, when the first node determines the resource multiplexing manner according to the multiplexing information and performs data transmission by using the resource multiplexing manner, in a scenario that the resource multiplexing manner is configured on HARD resources (HARD resources) of DUs of the first node, the first node performs data transmission according to the HARD resources configured by the DUs, and the MT of the first node ignores Downlink (DL) allocation or Uplink (Uplink, UL) grant scheduled by the second node. In a scenario where a resource multiplexing manner is configured on a soft resource (soft resource) or an unavailable resource (Not Available resource or NA resource) of a DU of a first node, if the DU of the first node has sent out a UL grant, receiving according to the UL grant sent out by the DU; and if the downlink transmission exists, stopping the downlink transmission or continuously finishing the downlink transmission, and stopping scheduling the new DL allocation.

In an embodiment, if the first node sends the first indication to the third node, the first indication is used to indicate the third node to determine the resource multiplexing mode. Then, after the first node sends the first indication to the third node, the first node stops using the hard resource belonging to the third node. Wherein the third node may be at least one of a child node of the first node and a UE accessing the first node. Optionally, the first node stops using the hard resources of the DU belonging to the third node.

In one embodiment, a time when the first node receives the multiplexing information or the indication information is defined as a first time, and a time when the first node determines the resource multiplexing mode is defined as a second time. Between the first time and the second time, the first node may adopt a default resource multiplexing mode (e.g., TDM multiplexing mode), or the first node may switch the current second multiplexing mode to the first multiplexing mode.

In addition, between the first time and the second time, in order not to affect the normal scheduling of the DU of the second node, the DU of the first node cannot perform transceiving operation on corresponding resources, or the DU of the first node cannot perform transceiving operation in the original resource multiplexing manner, or the DU of the first node can only perform transceiving operation in the default resource multiplexing manner.

Fig. 3 is a schematic flow chart of a data transmission method according to another embodiment of the present application. As shown in fig. 3, the data transmission method is applied in the first node, and includes the following steps S302-S304:

s302, indication information from the second node is received.

And S304, transmitting data by adopting the resource multiplexing mode indicated by the indication information.

In this embodiment, the first node receives the indication information from the second node, and performs data transmission in the resource multiplexing manner indicated by the indication information. The method and the device for the data transmission enable the resource multiplexing mode of the IAB node to be determined based on the indication information of the second node, and compared with a traditional implementation mode that the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can achieve the data transmission in a flexible resource multiplexing mode, so that the quality of wireless transmission of the IAB node is improved.

In one embodiment, the indication information may comprise a fallback indication or a resource configuration switching indication. And if the indication information is a backspacing indication, the first node backs to the default resource multiplexing mode of the first node according to the backspacing indication after receiving the backspacing indication, and performs data transmission by adopting the default resource multiplexing mode. If the indication information is a resource configuration switching indication, after receiving the resource configuration switching indication, the first node determines the resource configuration of the first node according to the resource configuration switching indication, and performs data transmission according to a resource multiplexing mode corresponding to the resource configuration, where the resource configuration includes frequency domain resources or time domain resources.

In an embodiment, the data transmission is performed by using the resource multiplexing method indicated by the indication information, or the data transmission may be performed by using a parameter corresponding to the resource multiplexing method indicated by the indication information. The parameter corresponding to the resource multiplexing mode may include at least one of the following: resource parameters and timing parameters.

Wherein the resource parameter may include at least one of a resource configuration, transmission power information of the first node, beam information, a guard symbol parameter, and a guard bandwidth parameter, and the resource configuration may include at least one of a frequency domain resource and a time domain resource. The protection symbol parameter may be considered to belong to time domain resource information and may include at least one of a protection symbol type, a protection symbol size, and a protection symbol position. The guard bandwidth parameter may be considered to belong to frequency domain resource information, and may include at least one of a guard bandwidth size and a guard bandwidth position.

In one embodiment, the second node obtains the indication information according to the multiplexing information. The multiplexing information can be actively collected by the second node, and the first node can also send the multiplexing information to the second node, so that the second node can obtain the indication information.

It can be understood that the second node obtains the indication information according to the multiplexing information, and actually determines the resource multiplexing mode according to the multiplexing information. The way in which the second node determines the resource multiplexing manner according to the multiplexing information is the same as the way in which the first node determines the resource multiplexing manner according to the multiplexing information in the above embodiment, and details are not repeated here.

Based on this, before receiving the indication information from the second node, the first node may send the indication information to the second node, so that the second node determines the indication information according to the multiplexing information; alternatively, the first node may send a first request to the second node, the first request requesting the second node to send the indication information. Optionally, the first request carries multiplexing information. If the first request does not carry the multiplexing information, the second node may actively acquire the multiplexing information based on the first request.

In this embodiment, the multiplexing information may include at least one of the following: capability information, availability information, resource information, timing information, and measurement information. The capability information is information for indicating that the first node supports at least one of a resource multiplexing mode, resource information, timing information and measurement information; or, the capability information is information for indicating that the first node does not support at least one of a resource multiplexing mode, resource information, timing information, and measurement information. The available information is information indicating whether at least one of resource information, timing information, and measurement information is available. The meaning and specific content of each multiplexing information item have been described in detail in the above embodiments, and are not described herein again.

In an embodiment, if the indication information is a resource configuration switching indication, the indication information may be sent in a code point manner, for example, when the indication information is a code point "1", it indicates resource configuration switching, that is, it indicates the first node to switch the resource multiplexing manner from the second multiplexing manner to the first multiplexing manner; when the indication information is code point "0", it indicates that the resource configuration is not switched, that is, the first node is indicated to maintain the second multiplexing mode.

In one embodiment, the indication information may be carried in indication signaling, which may include at least one of: F1-AP signaling, BAP PDU signaling, RRC signaling, MAC CE signaling, and DCI signaling.

The validation time of the indication signaling may include at least one of the following k1-k 9:

k1, the second node sends the start time of the time unit indicating the signaling.

k2, the first node receives a start time of a time unit indicating signaling.

k3, the second node sends the indication signaling after a first number of time units.

k4, the first node receives a second number of time units after the time unit of the indication signaling.

k5, the first node determines or demodulates the time unit of the indication information to end.

And k6, the first node finishes the position of the starting time domain unit determined according to the indication information.

k7, starting from the start position of the next configuration cycle of at least one of the data to be transmitted of the first node and the search space (search space) of the first node.

And k8, ending the end position of the next configuration period of at least one item of data to be transmitted of the first node and the search space of the first node. And the number of the first and second groups,

k9, the next configuration period of at least one of the data to be transmitted of the first node and the search space of the first node.

Wherein the first number or the second number may comprise at least one of: a predefined, preconfigured, configured or indicated value; a value determined according to a fourth rule predefined, preconfigured, configured or indicated, and a value determined according to subcarrier spacing (SCS). Wherein the fourth rule is a rule for determining the first number or the second number.

A time unit refers to a unit of time and may be characterized by at least one of a symbol (symbol), a slot (slot), a frame (subframe or frame), a millisecond (ms), and a second(s), for example, one symbol, one frame, one millisecond, one second, etc. may represent one time unit.

In one embodiment, the second node may send a plurality of indication signaling to the first node. In response to receiving the multiple indication signaling, the first node may select target signaling according to the receiving time of the multiple indication signaling, where the target signaling includes indication information.

Optionally, the first node may determine that the earliest received indication signaling is a target signaling; alternatively, the first node may determine that the latest received indication signaling is the target signaling. Wherein, the earliest reception or the latest reception indicates valid signaling. The valid signaling may be signaling that satisfies the validity time of the signaling.

In one embodiment, in response to receiving the plurality of indication signaling, the plurality of indication signaling satisfies at least one of the following m1-m 3:

m1, the first node expects the configuration of the plurality of indication signaling on the same resource to be the same. E.g., the same configuration on the same time, frequency, spatial, or code domain resources.

m2, the first node does not expect multiple indication signalings to conflict with the configuration on the same resource. And m3, the configuration of the plurality of indication signaling pairs on the same resource is the same.

In an embodiment, when the first node performs data transmission by using the resource multiplexing method indicated by the indication information, in a scenario where the resource multiplexing method is configured on the hard resources of the DUs of the first node, the first node performs data transmission according to the hard resources configured by the DUs, and the MT of the first node ignores the DL allocation or UL grant scheduled by the second node. In a scenario that a resource multiplexing manner is configured on soft resources or unavailable resources of a DU of a first node, if the DU of the first node has sent out UL grant, receiving according to the UL grant sent out by the DU; and if the downlink transmission exists, stopping the downlink transmission or continuously finishing the downlink transmission, and stopping scheduling the new DL allocation.

It should be noted that, in the data transmission method provided in the embodiment of the present application, the execution subject may be the first node, or a control module in the first node, configured to execute the data transmission method. In the embodiment of the present application, a method for performing data transmission by a first node is taken as an example, and a device for data transmission provided in the embodiment of the present application is described.

Fig. 4 is a schematic flow chart of a data transmission method according to still another embodiment of the present application. As shown in fig. 4, the data transmission method is applied in the second node, and includes the following steps S402:

s402, sending multiplexing information to the first node, wherein the multiplexing information is used for determining a resource multiplexing mode.

In this embodiment, the second node may include at least one of: the system comprises a parent node of the first node, a child node of the first node, a CU of an IAB network to which the first node belongs and UE accessing the first node. The resource multiplexing mode may include an FDM multiplexing mode, an SDM multiplexing mode, or a TDM multiplexing mode.

The second node can actively collect the multiplexing information and send the multiplexing information to the first node after the multiplexing information is collected. The multiplexing information may include at least one of: capability information, availability information, resource information, timing information, and measurement information. The capability information is information for indicating that the first node supports at least one of a resource multiplexing mode, resource information, timing information and measurement information; or, the capability information is information for indicating that the first node does not support at least one of a resource multiplexing mode, resource information, timing information, and measurement information. The available information is information indicating whether at least one of resource information, timing information, and measurement information is available. The meaning and specific content of each multiplexing information are described in detail in the above embodiments, and are not described herein again.

In this embodiment, the second node sends the multiplexing information to the first node, so that the first node can determine the resource multiplexing mode according to the multiplexing information, and compared with a conventional implementation mode in which the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the present application can implement data transmission in a flexible resource multiplexing mode, thereby improving the quality of wireless transmission of the IAB node.

In one embodiment, the multiplexing information may be carried in configuration signaling, i.e., the second node carries the multiplexing information in the configuration signaling and sends the configuration signaling to the first node. Wherein the configuration signaling may include at least one of: F1-AP signaling, BAP PDU signaling, RRC signaling, MAC CE signaling, and DCI signaling. After receiving the configuration signaling, the first node demodulates the configuration signaling to obtain the multiplexing information. Among them, F1-AP, BAP PDU, RRC can be considered as information.

In one embodiment, the multiplexing information is information for determining whether the resource multiplexing mode is a first multiplexing mode or a second multiplexing mode; or, the multiplexing information is information for determining to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode.

Optionally, the first multiplexing mode is a default resource multiplexing mode, and the default resource multiplexing mode may be a predefined, preconfigured, configured, or indicated multiplexing mode.

Optionally, the first multiplexing mode includes a TDM multiplexing mode, and the second multiplexing mode includes an FDM/SDM multiplexing mode.

Optionally, the first multiplexing mode and the second multiplexing mode may be different multiplexing information in the same resource multiplexing mode. For example, the first multiplexing mode is FDM/SDM case a, and the second multiplexing mode is FDM/SDM case x, where x is different from a, and case a and case x respectively represent different timing modes.

In one embodiment, after sending multiplexing information to the first node, the second node receives notification information from the first node, where the notification information is used to instruct the first node to perform data transmission in a resource multiplexing manner. That is, after receiving the notification message, the second node learns that the first node performs data transmission in the determined resource multiplexing mode.

Fig. 5 is a schematic flow chart of a data transmission method according to still another embodiment of the present application. As shown in fig. 5, the data transmission method is applied in the second node, and includes the following steps S502:

s502, sending indication information to the first node, where the indication information is used to indicate a resource multiplexing mode.

In this embodiment, the second node may include at least one of: the method comprises the steps of a parent node of a first node, a child node of the first node, a CU of an IAB network to which the first node belongs and UE accessing the first node. The resource multiplexing mode may include an FDM multiplexing mode, an SDM multiplexing mode, or a TDM multiplexing mode.

In this embodiment, the second node sends the indication information to the first node to indicate the resource multiplexing mode, so that the first node can perform data transmission according to the resource multiplexing mode indicated by the indication information, and compared with a conventional implementation mode in which the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the present application can achieve data transmission in a flexible resource multiplexing mode, thereby improving the quality of wireless transmission of the IAB node.

In one embodiment, before the second node sends the indication information to the first node, the multiplexing information is acquired, and the indication information is obtained according to the multiplexing information. The second node may acquire the multiplexing information from the first node, or the second node may actively acquire the multiplexing information.

It can be understood that the second node obtains the indication information according to the multiplexing information, and actually determines the resource multiplexing manner according to the multiplexing information. The manner in which the second node determines the resource multiplexing manner according to the multiplexing information is the same as the manner in which the first node determines the resource multiplexing manner according to the multiplexing information in the foregoing embodiment, and details are not repeated here.

In one embodiment, before the second node sends the indication information to the first node, a first request from the first node is received, and the first request is used for requesting the second node to send the indication information. The second node, after receiving the first request, sends indication information to the first node based on the first request.

The first request may carry multiplexing information, and the second node may obtain the indication information based on the multiplexing information carried in the first request. If the first request does not carry the multiplexing information, the second node can actively acquire the multiplexing information based on the first request and obtain the indication information based on the actively acquired multiplexing information.

In one embodiment, the indication information is used to indicate that the resource multiplexing mode is a first multiplexing mode or a second multiplexing mode; or, the indication information is used to indicate the first node to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode.

In an embodiment, after sending the indication information to the first node, the second node receives notification information from the first node, where the notification information is used to indicate that the first node performs data transmission in a resource multiplexing manner. That is, after receiving the notification message, the second node learns that the first node performs data transmission in the determined resource multiplexing mode.

In one embodiment, the indication information is carried in indication signaling, which may include at least one of: F1-AP signaling, BAP PDU signaling, RRC signaling, MAC CE signaling, and DCI signaling. Among them, F1-AP, BAP PDU, RRC can be considered as information.

The time of validity of the indication signaling may include at least one of:

the second node sends the starting time of the time unit of the indication signaling;

the first node receives the starting time of the time unit of the indication signaling;

the second node sends a first number of time units after the time unit of the indication signaling;

the first node receives a second number of time units after the time unit of the indication signaling;

the first node determines or demodulates the time unit of the indication information to end;

the first node finishes the initial time domain unit position determined according to the indication information;

starting the initial position of the next configuration period of at least one item of data to be sent of the first node and the search space of the first node;

ending the end position of the next configuration period of at least one item of data to be sent of the first node and the search space of the first node; and the number of the first and second groups,

and in the next configuration period of at least one item of data to be sent of the first node and the search space of the first node.

In one embodiment, the second node may send multiple indication signaling to the first node, the multiple indication signaling having the same configuration or indication on the same resource. The first node can select a target signaling according to the receiving time of the plurality of indication signaling, wherein the target signaling comprises indication information.

The following describes in detail the interaction process between the first node and the second node by means of several embodiments.

Fig. 6 is a schematic flow chart of a data transmission method according to still another embodiment of the present application. As shown in fig. 6, the data transmission method includes the following steps S602 to S608:

s602, the IAB node acquires the multiplexing information.

Wherein the multiplexing information is used for determining resource multiplexing mode and comprises

And S604, the IAB determines the resource multiplexing mode of the IAB according to the multiplexing information.

S606, the IAB node transmits data according to the determined resource multiplexing mode and sends notification information to the father IAB node.

The notification information is used for instructing the IAB node to transmit data in the determined resource multiplexing mode.

S608, the parent IAB node receives the notification information from the IAB node.

In this embodiment, the method for determining the resource multiplexing mode according to the multiplexing information is the same as that in the above embodiments, and is not described here again.

In this embodiment, the resource multiplexing manner may be determined in two manners, one of which is to determine the resource multiplexing manner to be the first multiplexing manner or the second multiplexing manner; the other is to determine to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode.

The first multiplexing mode may be a default resource multiplexing mode, and the default resource multiplexing mode may be a predefined, preconfigured, configured, or indicated multiplexing mode. Or, the first multiplexing mode is a TDM multiplexing mode, and the second multiplexing mode is an FDM/SDM multiplexing mode. Alternatively, the first multiplexing mode and the second multiplexing mode may be different multiplexing information in the same resource multiplexing mode. For example, the first multiplexing mode is FDM/SDM case a, and the second multiplexing mode is FDM/SDM case x, where x is different from a, and case a and case x respectively represent different timing modes.

In this embodiment, the IAB node determines the resource multiplexing mode according to the obtained multiplexing information, and notifies its parent IAB node. The method and the device for the data transmission enable the resource multiplexing mode of the IAB node to be determined based on the multiplexing information, and compared with a traditional implementation mode that the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can achieve the data transmission in a flexible resource multiplexing mode, so that the quality of wireless transmission of the IAB node is improved.

Fig. 7 is a schematic flowchart of a data transmission method according to still another embodiment of the present application. As shown in fig. 7, the data transmission method includes the following steps S702 to S710:

s702, the IAB node sends multiplexing information to its parent IAB node.

Wherein the multiplexing information is information for determining resource multiplexing mode

S704, the father IAB node receives the multiplexing information from the IAB node and determines the resource multiplexing mode according to the multiplexing information.

And S706, the parent IAB node obtains the indication information according to the determined resource multiplexing mode.

S708, the parent IAB node sends indication information to the IAB node.

S710, the IAB node receives the indication information from the father IAB node and carries out data transmission according to the resource multiplexing mode indicated by the indication information.

In this embodiment, the method for determining the resource multiplexing mode according to the multiplexing information is the same as that in the above embodiments, and is not described herein again.

In this embodiment, the resource multiplexing manner may be determined in two manners, one is to determine the resource multiplexing manner as a first multiplexing manner or a second multiplexing manner; the other is to determine to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode.

In this embodiment, the IAB node sends multiplexing information to its parent IAB node, and the parent IAB node determines the resource multiplexing mode according to the multiplexing information and indicates the resource multiplexing mode to the IAB node in the manner of the indication information. The method and the device for the data transmission enable the resource multiplexing mode of the IAB node to be determined based on the multiplexing information, and compared with a traditional implementation mode that the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can achieve the data transmission in a flexible resource multiplexing mode, so that the quality of wireless transmission of the IAB node is improved.

Fig. 8 is a schematic flow chart of a data transmission method according to still another embodiment of the present application. As shown in fig. 8, the data transmission method includes the following steps S802 to S810:

the IAB node sends a first request to its parent IAB node S802.

The first request carries multiplexing information, and the first request is used for requesting the parent IAB node to send indication information, and the indication information is used for indicating a resource multiplexing mode.

S804, the father IAB node receives the first request from the IAB node and determines the resource multiplexing mode based on the multiplexing information carried by the first request.

And S806, the parent IAB node obtains the indication information according to the determined resource multiplexing mode.

S808, the parent IAB node sends indication information to the IAB node.

And S810, the IAB node receives the indication information from the father IAB node and carries out data transmission according to the resource multiplexing mode indicated by the indication information.

In this embodiment, the IAB node sends a first request carrying multiplexing information to its parent IAB node, and the parent IAB node determines a resource multiplexing mode according to the multiplexing information carried in the first request and indicates the resource multiplexing mode to the IAB node in the manner of indication information. The method and the device for the wireless transmission of the IAB node enable the resource multiplexing mode of the IAB node to be determined based on the multiplexing information, and compared with the traditional implementation mode that the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can realize the data transmission in a flexible resource multiplexing mode, so that the wireless transmission quality of the IAB node is improved.

It should be noted that, in the data transmission method provided in the embodiment of the present application, the execution subject may be the second node, or a control module in the second node for executing the data transmission method. In the embodiment of the present application, a method for performing data transmission by a second node is taken as an example, and a data transmission apparatus provided in the embodiment of the present application is described.

Fig. 9-10 are schematic block diagrams of a first node according to an embodiment of the present application. As shown in fig. 9 and 10, the first node includes:

a first obtaining module 910, configured to obtain multiplexing information, where the multiplexing information is information used to determine a resource multiplexing manner;

a first determining module 920, configured to determine a resource multiplexing manner of the first node according to the multiplexing information;

a first transmission module 930, configured to perform data transmission in the resource multiplexing manner;

or, the first node comprises:

a first receiving module 1010, configured to receive indication information from a second node;

a second transmission module 1020, configured to transmit data in a resource multiplexing manner indicated by the indication information.

In one embodiment, the first obtaining module 910 includes:

a first receiving unit, configured to receive the multiplexing information from the second node.

In one embodiment, the multiplexing information is carried in configuration signaling, and the configuration signaling includes at least one of the following:

indicating an application protocol F1-AP signaling of F1, sending a back transmission adaptation BAP protocol data unit PDU signaling, a radio resource control RRC signaling, a multimedia access control unit MAC CE signaling and a downlink control information DCI signaling.

In one embodiment, the first node further comprises:

a first sending module, configured to send notification information to the second node after determining the resource multiplexing mode of the first node according to the multiplexing information, where the notification information is used to instruct the first node to perform data transmission in the resource multiplexing mode.

In one embodiment, the first node further comprises:

a second sending module, configured to send the multiplexing information to a second node before the indication information from the second node is received, where the multiplexing information is used to obtain the indication information.

In one embodiment, the first node further comprises:

a third sending module, configured to send, to a second node, a first request before the receiving of the indication information from the second node, where the first request is used to request the second node to send the indication information.

In one embodiment, the first request includes the multiplexing information.

In one embodiment, the multiplexing information comprises at least one of: capability information, availability information, resource information, timing information, and measurement information; wherein the capability information is information for indicating that the first node supports at least one of the resource multiplexing mode, the resource information, the timing information, and the measurement information; the available information is information indicating whether at least one of the resource information, the timing information, and the measurement information is available.

In one embodiment, the multiplexing information includes the capability information;

the first determining module 920 includes:

a first determining unit, configured to determine, in response to that the capability information satisfies a first condition, that the resource multiplexing mode of the first node is a first multiplexing mode; the first condition includes at least one of:

predefining, preconfiguring, configuring or indicating that the second multiplexing mode is disabled;

the first node only supports the first multiplexing mode; and the number of the first and second groups,

the first node does not support a second multiplexing mode; the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined.

In one embodiment, the multiplexing information includes the availability information;

the first determining module 920 includes:

a second determining unit, configured to determine, in response to that the available information satisfies a second condition, that the resource multiplexing mode of the first node is a first multiplexing mode; the second condition includes at least one of:

at least one of the resource information, the timing information, and the measurement information in the first multiplexing mode is available; and the number of the first and second groups,

at least one of the resource information, the timing information, and the measurement information in a second multiplexing mode is unavailable; the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined.

In one embodiment, the resource information includes at least one of:

resource configuration, transmission power information of the first node, and beam information, wherein the resource configuration includes frequency domain resources or time domain resources.

In one embodiment, the multiplexing information includes the resource configuration;

the first determining module 920 includes:

a third determining unit, configured to determine, in response to that the resource configuration satisfies a third condition, that the resource multiplexing mode of the first node is a first multiplexing mode;

wherein the third condition comprises at least one of:

the frequency domain resource is effective and is compatible with the resource allocation of the first multiplexing mode;

indicating that the frequency domain resources are invalid; and the number of the first and second groups,

the frequency domain resources on the frequency domain are predefined, preconfigured, configured, or indicated to be the same configuration.

In one embodiment, the transmission power information includes at least one of a total transmission power of the first node, an integrated access backhaul mobile terminal IAB-MT power in the first node, and an integrated access backhaul distributed unit IAB-DU power of the first node;

the first determining module 920 comprises:

a fourth determining unit, configured to determine, in response to that the transmission power information satisfies a fourth condition, that the resource multiplexing mode of the first node is a first multiplexing mode; the fourth condition includes at least one of:

predefining, preconfiguring, configuring or indicating that the transmission power information is the transmission power information in the first multiplexing mode;

the total transmission power or the maximum transmission power of the first node is greater than or equal to a first power threshold value;

the IAB-MT power or the maximum transmission power of the IAB-MT is greater than or equal to a second power threshold value; and the number of the first and second groups,

the power of the IAB-DU or the maximum transmission power of the IAB-DU is greater than or equal to a third power threshold value.

In one embodiment, the first determining module 920 includes:

a fifth determining unit, configured to determine that the resource multiplexing mode of the first node is a first multiplexing mode in response to that the beam information satisfies a fifth condition; the fifth condition includes at least one of:

predefining, preconfiguring, configuring or indicating that the beam information is the beam information in the first multiplexing mode;

the number of available beams predefined, preconfigured, configured or indicated is zero; and (c) a second step of,

the predefined, preconfigured, configured or indicated beams are all unavailable beams.

In one embodiment, the timing information comprises at least one of:

timing mode and timing parameters;

the first determining module 920 includes:

a sixth determining unit, configured to determine, in response to that the timing information satisfies a sixth condition, that the resource multiplexing mode of the first node is a first multiplexing mode; the sixth condition includes at least one of:

predefining, preconfiguring, configuring or indicating that the timing information is the timing information in the first multiplexing mode;

the first node only supports the timing information in the first multiplexing mode;

the first node does not support timing information in a second multiplexing mode; the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined;

the predefined, preconfigured, configured or indicated timing information is different from the first node enabled timing information; and the number of the first and second groups,

and the indication value corresponding to the timing information is used for indicating the first multiplexing mode.

In one embodiment, the measurement information comprises at least one of:

interference measurement information that the first node is interfered by other nodes, interference measurement information that the first node interferes with other nodes, transmission error information of the first node, and channel quality information of the first node.

In one embodiment, the multiplexing information comprises the interference measurement information; the interference measurement information comprises an interference measurement value;

the first determining module 920 comprises:

a seventh determining unit, configured to determine that the resource multiplexing mode of the first node is a first multiplexing mode in response to that the interference measurement information satisfies a seventh condition; the seventh condition includes at least one of:

predefining, preconfiguring, configuring or indicating that the interference measurement information is the interference measurement information in the first multiplexing mode;

the interference measurement value is greater than or equal to a first measurement threshold value; and (c) a second step of,

the interference measurement value configured, indicated or notified by the second node is greater than or equal to a second measurement threshold value.

In one embodiment, the transmission error information includes at least one of:

the transmission error times and the ratio of the transmission error times in the total transmission times;

the first determining module 920 includes:

an eighth determining unit, configured to determine that the resource multiplexing mode of the first node is a first multiplexing mode in response to that the transmission error information satisfies an eighth condition; the eighth condition includes at least one of:

predefining, preconfiguring, configuring or indicating that the transmission error information is the transmission error information in the first multiplexing mode;

the transmission error times are greater than or equal to a first transmission threshold value; and (c) a second step of,

and the proportion of the transmission error times in the total transmission times is greater than or equal to a second transmission threshold value.

In one embodiment, the channel quality information comprises at least one of:

channel State Information (CSI), reference Signal Received Power (RSRP), reference Signal Received Quality (RSRQ), received Signal Strength Indication (RSSI), signal-to-interference noise ratio (SINR), signal-to-noise ratio (SNR), block error rate (BLER) and Bit Error Rate (BER);

the first determining module 920 includes:

a ninth determining unit, configured to determine that the resource multiplexing mode of the first node is a first multiplexing mode in response to that the channel quality information satisfies a ninth condition; the ninth condition includes at least one of:

predefining, preconfiguring, configuring or indicating that the channel quality information is the channel quality information in the first multiplexing mode;

the CSI is smaller than a first parameter threshold value; wherein the CSI comprises at least one of a Channel Quality Indication (CQI), a Rank Indication (RI), and a Precoding Matrix Indication (PMI);

the RSRP, RSRQ, SINR, or SNR is less than a second parameter threshold value; and the number of the first and second groups,

the RSSI, BLER or BER is greater than or equal to a third parameter threshold value.

In one embodiment, the configuration signaling is signaling for pre-configuring, configuring or indicating the multiplexing information;

the first determining module 920 comprises:

a tenth determining unit, configured to determine, in response to that the configuration signaling satisfies a tenth condition, that the resource multiplexing mode of the first node is a first multiplexing mode; the tenth condition includes at least one of:

at least one of the configuration signaling is not sent to the first node;

the first node does not receive at least one of the configuration signaling; and the number of the first and second groups,

the first node fails to demodulate at least one of the configuration signaling.

In one embodiment, the first multiplexing mode is a default resource multiplexing mode, and the default resource multiplexing mode is a predefined, preconfigured, configured, or indicated resource multiplexing mode.

In one embodiment, the resource multiplexing method includes:

FDM multiplexing, SDM multiplexing, or TDM multiplexing.

In one embodiment, the FDM multiplexing format or the SDM multiplexing format includes:

the DU of the first node and the MT of the first node are both used for sending data;

the DU of the first node and the MT of the first node are both used for receiving data;

the DU of the first node is used for transmitting data, and the MT of the first node is used for receiving data; or the like, or, alternatively,

the first node's DU is used for receiving data and the first node's MT is used for sending data.

In one embodiment, the first determining module 920 includes:

an eleventh determining unit, configured to determine to switch the resource multiplexing mode of the first node from a second multiplexing mode to a first multiplexing mode according to the multiplexing information; the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined.

In one embodiment, the indication information comprises a fallback indication or a resource configuration switching indication;

the first transmission module 930 includes:

a first transmission unit, configured to perform data transmission in a resource multiplexing manner default to the first node according to the fallback indication; or the like, or a combination thereof,

a second transmission unit, configured to determine resource allocation of the first node according to the resource allocation switching indication, and perform data transmission according to a resource multiplexing manner corresponding to the resource allocation, where the resource allocation includes frequency domain resources or time domain resources.

In one embodiment, the first determining module 920 comprises:

a twelfth determining unit, configured to determine, according to the multiplexing information, a parameter corresponding to a resource multiplexing mode of the first node;

the first transmission module 930 includes:

a third transmission unit, configured to perform data transmission by using the parameter corresponding to the resource multiplexing mode;

the second transmission module 1020 includes:

and a fourth transmission unit, configured to perform data transmission by using the parameter corresponding to the resource multiplexing mode indicated by the indication information.

In one embodiment, the parameter corresponding to the resource multiplexing mode includes at least one of the following:

resource parameters, timing parameters, guard symbol parameters, and guard bandwidth parameters.

In one embodiment, the protection symbol parameter includes at least one of a protection symbol type, a protection symbol size, and a protection symbol position.

In one embodiment, the guard bandwidth parameter comprises at least one of a guard bandwidth size and a guard bandwidth position.

In one embodiment, the indication information is carried in indication signaling, and the indication signaling includes at least one of the following: indicating an application protocol F1-AP signaling of F1, sending a backhaul adaptation protocol data unit (BAP PDU) signaling, a Radio Resource Control (RRC) signaling, a medium access control unit (MAC CE) signaling and a Downlink Control Information (DCI) signaling.

In one embodiment, the validation time of the indication signaling comprises at least one of:

the second node sends the indication signaling after a first number of time units;

the first node receives the indication signaling after a second number of time units;

starting a starting position of a next configuration period of at least one of data to be transmitted of the first node and a search space of the first node;

ending an end position of a next configuration period of at least one of data to be transmitted of the first node and a search space of the first node; and the number of the first and second groups,

and in the next configuration period of at least one of the data to be sent of the first node and the search space of the first node.

In one embodiment, the first receiving module 1010 includes:

a selecting unit, configured to select, in response to receiving multiple indication signaling, a target signaling according to receiving time of the multiple indication signaling, where the target signaling includes the indication information.

In one embodiment, the selection unit is further configured to:

determining the earliest received indication signaling as the target signaling; or the like, or, alternatively,

and determining the latest received indication signaling as the target signaling.

In one embodiment, the plurality of indication signals are the same in configuration or indication on the same resource.

In one embodiment, the first transmission module 930 or the second transmission module 1020 includes:

a fifth transmission unit, configured to respond to the resource multiplexing manner being configured on a hard resource of a distributed unit DU of the first node, and perform data transmission according to the hard resource configured by the DU;

a sixth transmission unit, configured to respond to that the resource multiplexing manner is configured on the soft resource or the unavailable resource of the DU, and if the DU has sent out an UL grant, perform reception according to the UL grant sent out by the DU; and if the downlink transmission exists, stopping the downlink transmission or continuing to finish the downlink transmission, and stopping scheduling the new DL allocation.

In one embodiment, the first node further comprises:

a fourth sending module, configured to send a first indication to a third node, and stop using a hard resource belonging to the third node; the first indication is used for indicating the third node to determine the resource multiplexing mode.

In one embodiment, the third node is at least one of a child node of the first node and a user equipment, UE, accessing the first node.

In one embodiment, the second node comprises at least one of:

a parent node of the first node, a child node of the first node, a centralized unit CU of an IAB network to which the first node belongs, and a user equipment UE accessing the first node.

In the embodiment of the present application, a first node (i.e., an IAB node) acquires multiplexing information, determines a resource multiplexing mode of the first node according to the multiplexing information, and performs data transmission by using the determined resource multiplexing mode. Or the first node receives the indication information from the second node and performs data transmission by adopting the resource multiplexing mode indicated by the indication information. Therefore, according to the technical scheme, the resource multiplexing mode of the IAB node can be determined based on the multiplexing information or the indication information of the second node, and compared with the traditional implementation mode that the IAB node can only adopt one configured resource multiplexing mode, the IAB node in the application can realize that the flexible resource multiplexing mode is adopted for data transmission, so that the wireless transmission quality of the IAB node is improved.

The first node in the embodiment of the present application may be a device, a device or an electronic apparatus having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The first node provided in the embodiment of the present application can implement each process implemented by the above method embodiment applied to the first node, and achieve the same technical effect, and for avoiding repetition, details are not repeated here.

Fig. 11-12 are schematic block diagrams of a second node according to an embodiment of the present application. As shown in fig. 11 and 12, the second node includes:

a fifth sending module 1110, configured to send multiplexing information to the first node, where the multiplexing information is used to determine a resource multiplexing manner;

or, the second node comprises:

a sixth sending module 1210, configured to send indication information to the first node; the indication information is used for indicating the resource multiplexing mode.

indicating an application protocol F1-AP signaling of F1, sending a back transmission adaptive BAP protocol data unit PDU signaling, a radio resource control RRC signaling, a multimedia access control unit MAC CE signaling and a downlink control information DCI signaling.

In one embodiment, the second node further comprises:

a second receiving module, configured to receive notification information from the first node after the multiplexing information is sent to the first node or after the indication information is sent to the first node, where the notification information is used to indicate that the first node performs data transmission in the resource multiplexing manner.

In one embodiment, the second node further comprises:

a second obtaining module, configured to obtain the multiplexing information before sending the indication information to the first node;

and the indication information obtaining module is used for obtaining the indication information according to the multiplexing information.

In one embodiment, the second obtaining module comprises:

a second receiving unit, configured to receive the multiplexing information from the first node.

In one embodiment, the second node further comprises:

a third receiving module, configured to receive a first request from a first node before sending indication information to the first node; the first request is used for requesting the second node to send the indication information.

In one embodiment, the first request includes the multiplexing information.

In one embodiment, the resource information comprises at least one of a resource configuration, transmit power information of the first node, and beam information; wherein the resource configuration comprises frequency domain resources or time domain resources.

In one embodiment, the transmit power information comprises at least one of a total transmit power of the first node, an IAB-MT power in the first node, and an IAB-DU power of the first node.

In one embodiment, the beam information comprises at least one of a number of available beams and a number of unavailable beams of the first node.

In one embodiment, the timing information comprises at least one of:

timing modes and timing parameters.

In one embodiment, the measurement information comprises at least one of:

In one embodiment, the transmission error information includes at least one of:

the number of transmission errors and the ratio of the number of transmission errors to the total number of transmissions.

In one embodiment, the channel quality information comprises at least one of:

channel state information CSI, reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference and noise ratio SINR, signal to noise ratio SNR, block error rate BLER, and bit error rate BER.

In one embodiment, the multiplexing information is used to determine that the resource multiplexing mode is a first multiplexing mode or a second multiplexing mode; or, the multiplexing information is used to determine to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined;

the indication information is used for indicating that the resource multiplexing mode is the first multiplexing mode or the second multiplexing mode; or, the indication information is used to indicate the first node to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode.

In one embodiment, the first multiplexing mode is a default resource multiplexing mode, and the default resource multiplexing mode is a predefined, preconfigured, configured, or indicated multiplexing mode.

In one embodiment, the indication information is carried in indication signaling; the indication signaling includes at least one of: indicating an application protocol F1-AP signaling of F1, sending a back transmission adaptation protocol data unit (BAP PDU) signaling, a Radio Resource Control (RRC) signaling, a medium access control unit (MAC CE) signaling and a Downlink Control Information (DCI) signaling.

the first node receives a starting time of a time unit of the indication signaling;

starting the starting position of the next configuration period of at least one item of data to be sent of the first node and the search space of the first node;

In one embodiment, the sixth sending module 1210 includes:

a sending unit, configured to send a plurality of indication signaling to the first node; the multiple indication signals are the same in configuration or indication on the same resource.

In one embodiment, the second node comprises at least one of: a parent node of the first node, a child node of the first node, a centralized unit CU of an IAB network to which the first node belongs, and a user equipment UE accessing the first node.

In this embodiment, the second node sends the multiplexing information to the first node, so that the first node can determine the resource multiplexing mode according to the multiplexing information, or the second node sends the indication information to the first node to indicate the resource multiplexing mode, so that the first node can perform data transmission according to the resource multiplexing mode indicated by the indication information.

The second node in the embodiment of the present application may be a device, a device or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The second node provided in the embodiment of the present application can implement each process implemented by the above method embodiment applied to the second node, and achieve the same technical effect, and for avoiding repetition, details are not repeated here.

Optionally, as shown in fig. 13, an embodiment of the present application further provides a communication device 1300, which includes a processor 1301, a memory 1302, and a program or an instruction stored on the memory 1302 and executable on the processor 1301, for example, when the communication device 1300 is a terminal, the program or the instruction is executed by the processor 1301 to implement each process of the foregoing data transmission method embodiment, and the same technical effect can be achieved. When the communication device 1300 is a network device, the program or the instruction is executed by the processor 1301 to implement the processes of the data transmission method embodiment, and the same technical effect can be achieved, and for avoiding repetition, details are not described here again.

The embodiment of the application further provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for acquiring multiplexing information, and the multiplexing information is information used for determining a resource multiplexing mode; the processor is used for determining a resource multiplexing mode of the first node according to the multiplexing information; and transmitting data by adopting the resource multiplexing mode. The terminal embodiment corresponds to the first node-side method embodiment or the second node-side method embodiment, and all implementation processes and implementation manners of the method embodiments can be applied to the terminal embodiment and can achieve the same technical effect.

Or, the communication interface is configured to acquire multiplexing information, and the processor is configured to send the multiplexing information to the first node, where the multiplexing information is information used to determine a resource multiplexing mode. Or the processor is used for sending indication information to the first node; the indication information is used for indicating the resource multiplexing mode.

Specifically, fig. 14 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 1000 includes, but is not limited to: at least some of the components of the radio frequency unit 1010, the network module 1002, the audio output unit 1003, the input unit 1004, the sensor 1005, the display unit 1006, the user input unit 1007, the interface unit 1008, the memory 1009, and the processor 1010, etc.

Those skilled in the art will appreciate that terminal 1000 can further include a power supply (e.g., a battery) for powering the various components, and the power supply can be logically coupled to processor 1010 via a power management system, such that functions of managing charging, discharging, and power consumption are performed via the power management system. The terminal structure shown in fig. 14 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.

It should be understood that, in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment, after receiving downlink data from a network side device, the radio frequency unit 1001 processes the downlink data to the processor 1010; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, and the like) required for at least one function, and the like. Further, the Memory 1009 may include a high-speed random access Memory and may also include a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1010 may include one or more processing units; alternatively, processor 1010 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1010. When executed, the processor 1010 may implement the processes of the data transmission method embodiments, and achieve the same technical effects, which are not described herein again to avoid repetition.

The embodiment of the present application further provides a network side device, which includes a processor and a communication interface, where the processor is configured to acquire multiplexing information or acquire indication information. The communication interface is used for sending multiplexing information to the first node, wherein the multiplexing information is information used for determining a resource multiplexing mode; or, sending indication information to the first node, where the indication information is used to indicate the resource multiplexing mode. The network side device embodiment corresponds to the first node side method embodiment or the second node side method embodiment, and all implementation processes and implementation manners of the method embodiments are applicable to the network side device embodiment and can achieve the same technical effects.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 15, the network device 1500 includes: antenna 151, radio frequency device 152, baseband device 153. The antenna 151 is connected to a radio frequency device 152. In the uplink direction, the rf device 152 receives information through the antenna 151 and sends the received information to the baseband device 153 for processing. In the downlink direction, the baseband device 153 processes information to be transmitted and transmits the information to the rf device 152, and the rf device 152 processes the received information and transmits the processed information through the antenna 151.

The above-mentioned frequency band processing means may be located in the baseband means 153, and the method performed by the network side device in the above embodiment may be implemented in the baseband means 153, where the baseband means 153 includes a processor 154 and a memory 155.

The baseband device 153 may include at least one baseband board, for example, and a plurality of chips are disposed on the baseband board, as shown in fig. 15, wherein one chip, for example, the processor 154, is connected to the memory 155 to call the program in the memory 155 to perform the network device operation shown in the above method embodiment.

The baseband device 153 may further include a network interface 156 for exchanging information with the radio frequency device 152, such as a Common Public Radio Interface (CPRI).

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 155 and capable of being executed on the processor 154, the processor 154 calls the instructions or programs in the memory 155 to execute the methods executed by the modules shown in fig. 9 to 12, and achieve the same technical effects, and are not described herein in detail to avoid repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the data transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the foregoing data transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims

1. A data transmission method is applied to a first node, wherein the first node is an Integrated Access Backhaul (IAB) node, and the method comprises the following steps:

carrying out data transmission by adopting the resource multiplexing mode;

or the like, or, alternatively,

receiving indication information from the second node;

2. The method of claim 1, wherein the obtaining multiplexing information comprises:

receiving the multiplexing information from the second node.

3. The method according to claim 1 or 2, wherein after determining the resource multiplexing mode of the first node according to the multiplexing information, the method further comprises:

and sending notification information to the second node, wherein the notification information is used for indicating the first node to adopt the resource multiplexing mode for data transmission.

4. A method according to any of claims 1-3, wherein prior to said receiving indication information from the second node, the method further comprises:

and sending the multiplexing information to the second node, wherein the multiplexing information is used for obtaining the indication information.

5. A method according to any of claims 1-3, wherein prior to said receiving indication information from the second node, the method further comprises:

and sending a first request to the second node, wherein the first request is used for requesting the second node to send the indication information.

6. The method of claim 5, wherein the first request comprises the multiplexing information.

7. The method according to any of claims 1-6, wherein the multiplexing information comprises at least one of: capability information, availability information, resource information, timing information, and measurement information; wherein the capability information is information for indicating that the first node supports at least one of the resource multiplexing mode, the resource information, the timing information, and the measurement information; the available information is information indicating whether at least one of the resource information, the timing information, and the measurement information is available.

8. The method of claim 7, wherein the multiplexing information comprises the capability information;

the determining the resource multiplexing mode of the first node according to the multiplexing information includes:

determining the resource multiplexing mode of the first node as a first multiplexing mode in response to the capability information meeting a first condition; the first condition includes at least one of:

the first node does not support a second multiplexing mode, and the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined.

9. The method according to claim 7 or 8, wherein the multiplexing information comprises the availability information;

determining the resource multiplexing mode of the first node to be a first multiplexing mode in response to the available information meeting a second condition; the second condition includes at least one of:

at least one of the resource information, the timing information, and the measurement information in the first multiplexing mode is available; and (c) a second step of,

10. The method according to any of claims 7-9, wherein the resource information comprises at least one of:

11. The method of claim 10, wherein the multiplexing information comprises the resource configuration;

determining that the resource multiplexing mode of the first node is a first multiplexing mode in response to the resource configuration meeting a third condition;

wherein the third condition comprises at least one of:

12. The method according to claim 10 or 11, wherein the transmission power information comprises at least one of total transmission power of the first node, integrated access backhaul mobile terminal IAB-MT power in the first node, and integrated access backhaul distributed unit IAB-DU power of the first node;

determining the resource multiplexing mode of the first node as a first multiplexing mode in response to the sending power information meeting a fourth condition; the fourth condition includes at least one of:

the IAB-MT power or the maximum transmission power of the IAB-MT is greater than or equal to a second power threshold value; and (c) a second step of,

the IAB-DU power or the maximum transmit power of the IAB-DU is greater than or equal to a third power threshold value.

13. The method according to any of claims 1-12, wherein the determining the resource multiplexing mode of the first node according to the multiplexing information comprises:

determining that the resource multiplexing mode of the first node is a first multiplexing mode in response to the beam information satisfying a fifth condition; the fifth condition includes at least one of:

predefining, preconfiguring, configuring or indicating the beam information to be the beam information in the first multiplexing mode;

14. The method according to any of claims 7-13, wherein the timing information comprises at least one of:

timing mode and timing parameters;

determining that the resource multiplexing mode of the first node is a first multiplexing mode in response to the timing information meeting a sixth condition; the sixth condition includes at least one of:

predefining, preconfiguring, configuring or indicating the timing information to be the timing information in the first multiplexing mode;

15. The method according to any of claims 7-14, wherein the measurement information comprises at least one of:

16. The method of claim 15, wherein the multiplexing information comprises the interference measurement information; the interference measurement information comprises an interference measurement value;

determining that the resource multiplexing mode of the first node is a first multiplexing mode in response to the interference measurement information meeting a seventh condition; the seventh condition includes at least one of:

the interference measurement value is greater than or equal to a first measurement threshold value; and the number of the first and second groups,

17. The method according to claim 15 or 16, wherein the transmission error information comprises at least one of:

the transmission error times and the ratio of the transmission error times to the total transmission times;

determining the resource multiplexing mode of the first node as a first multiplexing mode in response to the transmission error information meeting an eighth condition; the eighth condition includes at least one of:

18. The method according to any of claims 15-17, wherein the channel quality information comprises at least one of:

channel state information CSI, reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference and noise ratio SINR, signal to noise ratio SNR, block error rate BLER, and bit error rate BER;

determining the resource multiplexing mode of the first node as a first multiplexing mode in response to the channel quality information satisfying a ninth condition; the ninth condition includes at least one of:

predefining, preconfiguring, configuring or indicating the channel quality information to be the channel quality information in the first multiplexing mode;

the RSSI, BLER, or BER is greater than or equal to a third parameter threshold value.

19. The method according to any of claims 1-18, wherein the multiplexing information is carried in configuration signaling, the configuration signaling being signaling for pre-configuring, configuring or indicating the multiplexing information;

determining that the resource multiplexing mode of the first node is a first multiplexing mode in response to the configuration signaling meeting a tenth condition; the tenth condition includes at least one of:

the first node fails to demodulate at least one of the configuration signaling.

20. The method according to any of claims 1-19, wherein the determining the resource multiplexing mode of the first node according to the multiplexing information comprises:

according to the multiplexing information, determining to switch the resource multiplexing mode of the first node from a second multiplexing mode to a first multiplexing mode; the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined.

21. The method according to any of claims 1-20, wherein the indication information comprises a fallback indication or a resource configuration switching indication;

the data transmission by using the resource multiplexing mode indicated by the indication information includes:

according to the backspacing indication, adopting a default resource multiplexing mode of the first node to carry out data transmission; or the like, or, alternatively,

and determining the resource configuration of the first node according to the resource configuration switching indication, and performing data transmission according to a resource multiplexing mode corresponding to the resource configuration, wherein the resource configuration comprises frequency domain resources or time domain resources.

22. The method according to any of claims 1-21, wherein said determining the resource multiplexing mode of the first node according to the multiplexing information comprises:

determining a parameter corresponding to the resource multiplexing mode of the first node according to the multiplexing information;

the data transmission by adopting the resource multiplexing mode comprises the following steps:

adopting the parameters corresponding to the resource multiplexing mode to carry out data transmission;

the data transmission is carried out by adopting the resource multiplexing mode indicated by the indication information, and the method comprises the following steps:

and transmitting data by adopting the parameters corresponding to the resource multiplexing mode indicated by the indication information.

23. The method according to any one of claims 1-22, wherein the indication information is carried in an indication signaling, and the validation time of the indication signaling comprises at least one of:

ending an end position of a next configuration period of at least one of data to be transmitted of the first node and a search space of the first node; and (c) a second step of,

24. The method of claim 23, wherein receiving the indication from the second node comprises:

responding to the receiving of a plurality of indication signalings, and selecting target signalings according to the receiving time of the indication signalings, wherein the target signalings comprise the indication information.

25. The method of claim 24, wherein selecting the target signaling according to the receiving time of the indication signaling comprises:

26. The method according to claim 24 or 25, wherein the plurality of indication signals are the same or the configuration or indication on the same resource.

27. The method according to any one of claims 1 to 26, wherein the performing data transmission in the resource multiplexing mode or in the resource multiplexing mode indicated by the indication information includes:

responding to the resource multiplexing mode configured on the hard resource of a distributed unit DU of the first node, and performing data transmission according to the hard resource configured by the DU;

in response to the resource multiplexing mode being configured on the soft resource or the unavailable resource of the DU, if the DU has issued a UL grant, receiving according to the UL grant issued by the DU; and if the downlink transmission exists, stopping the downlink transmission or continuously finishing the downlink transmission, and stopping scheduling the new DL allocation.

28. The method of any one of claims 1-27, further comprising:

sending a first indication to a third node and stopping using hard resources belonging to the third node; the first indication is used for indicating the third node to determine the resource multiplexing mode.

29. The method of claim 28, wherein the third node is at least one of a child node of the first node and a User Equipment (UE) accessing the first node.

30. The method according to any of claims 1-29, wherein the second node comprises at least one of:

the system comprises a parent node of the first node, a child node of the first node, a centralized unit CU of an IAB network to which the first node belongs and user equipment UE accessing the first node.

31. A data transmission method applied to a second node, the method comprising:

sending multiplexing information to a first node, wherein the multiplexing information is used for determining a resource multiplexing mode;

or the like, or, alternatively,

32. The method of claim 31, wherein after the sending multiplexing information to the first node or after the sending indication information to the first node, the method further comprises:

and receiving notification information from the first node, wherein the notification information is used for indicating the first node to adopt the resource multiplexing mode for data transmission.

33. The method according to claim 31 or 32, wherein before sending the indication information to the first node, the method further comprises:

acquiring the multiplexing information;

and obtaining the indication information according to the multiplexing information.

34. The method according to any of claims 31-33, wherein said obtaining said multiplexing information comprises:

receiving the multiplexing information from the first node.

35. The method according to any of claims 31-34, wherein before sending the indication information to the first node, the method further comprises:

receiving a first request from the first node; the first request is used for requesting the second node to send the indication information.

36. The method of claim 35, wherein the first request comprises the multiplexing information.

37. The method according to any of claims 31-36, wherein the multiplexing information comprises at least one of: capability information, availability information, resource information, timing information, and measurement information; wherein the capability information is information for indicating that the first node supports at least one of the resource multiplexing mode, the resource information, the timing information, and the measurement information; the available information is information indicating whether at least one of the resource information, the timing information, and the measurement information is available.

38. The method according to any of claims 31-37, wherein the multiplexing information is used to determine that the resource multiplexing mode is a first multiplexing mode; or, the multiplexing information is used to determine to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode; the second multiplexing mode is a resource multiplexing mode adopted before the resource multiplexing mode of the first node is determined;

the indication information is used for indicating that the resource multiplexing mode is the first multiplexing mode; or, the indication information is used to indicate the first node to switch the resource multiplexing mode from the second multiplexing mode to the first multiplexing mode.

39. The method of claim 38, wherein the time for the indication signaling to take effect comprises at least one of:

40. The method according to claim 38 or 39, wherein said sending the indication information to the first node comprises:

sending a plurality of indication signaling to the first node; the multiple indication signals are configured or indicated to be the same on the same resource.

41. The method according to any of the claims 31-40, wherein the second node comprises at least one of: the system comprises a parent node of the first node, a child node of the first node, a centralized unit CU of an IAB network to which the first node belongs and user equipment UE accessing the first node.

42. A first node, wherein the first node is an IAB node, comprising:

the first transmission module is used for transmitting data in the resource multiplexing mode;

or the like, or a combination thereof,

43. A second node, comprising:

a first sending module, configured to send multiplexing information to a first node, where the multiplexing information is used to determine a resource multiplexing mode;

or the like, or, alternatively,

44. A terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing a data transmission method as claimed in any one of claims 1 to 30 or the steps of a data transmission method as claimed in any one of claims 31 to 41.

45. A network-side device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the data transmission method according to any one of claims 1 to 30, or implement the steps of the data transmission method according to any one of claims 31 to 41.

46. A readable storage medium, on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the data transmission method of any one of claims 1 to 30, or carry out the steps of the data transmission method of any one of claims 31 to 41.