Information transmission method, device and system

Abstract

The present application provides a method, apparatus, and system for information transmission, which can enhance user experience. A first network management device receives network node information sent by a second network management device, the network node information including information of a first integrated access and backhaul (IAB) node; and the first network management device configures the network node information.

Description

Technical Field

[0001] The present application relates to the field of communications, and more particularly, to a method, device, and system for information transmission. Background Art

[0002] Compared to the fourth-generation mobile communication system, the fifth-generation mobile communication (5G) network has put forward more stringent requirements for various network performance indicators. For example, the capacity indicator is increased by 1,000 times, and there are wider coverage requirements, ultra-high reliability and ultra-low latency. Considering the abundant high-frequency carrier frequency resources, in hot spots, in order to meet the ultra-high capacity requirements of 5G, the use of high-frequency small base stations to form a network is becoming increasingly popular. High-frequency carrier propagation characteristics are poor, with severe attenuation due to obstruction and a narrow coverage range, so a large number of small base stations need to be deployed densely. Providing fiber optic backhaul for these densely deployed small base stations is costly and difficult to construct, especially in remote areas.

[0003] Integrated access and backhaul (IAB) technology offers a solution to these problems. Its access and backhaul links both utilize wireless transmission, eliminating the need for fiber deployment. In an IAB network, a relay node (RN), also known as an IAB node, provides wireless access services for user equipment (UE). UE services are transmitted by the IAB node to an IAB donor node (also known as a donor gnodeB, DgNB), to which the IAB node is connected via a wireless backhaul link.

[0004] Currently, IAB nodes can obtain operation, administration and maintenance (OAM) services from OAM entities through protocol data unit (PDU) sessions between IAB nodes and core network entities. However, the standard does not specifically define how to obtain OAM services from the network management device side. Summary of the Invention

[0005] The present application provides a method, device, and system for information transmission, which can enhance user experience.

[0006] In a first aspect, a method for information transmission is provided, including: a first network management device receives information about a network node from a second network management device, the information about the network node including information about a first integrated access and backhaul IAB node; and the first network management device configures the information about the network node.

[0007] Based on the above technical solution, the first network management device receives the information of the first IAB node sent by the second network management device, and the first network management device configures the first IAB node according to the information of the first IAB node, which can ensure the execution of the first IAB node service, thereby improving the user experience.

[0008] In a possible implementation manner, the method further includes: the first network management device sending the information of the first IAB node to the network node.

[0009] In a possible implementation manner, the information of the first IAB node is capability information of the first IAB node.

[0010] In a possible implementation manner, the method further includes: the first network management device sending the information of the first IAB node to the network node, so that the network node sends the information of the first IAB node to the first IAB node.

[0011] In a possible implementation, the network node sending the information of the first IAB node to the first IAB node includes: the network node sending the information of the first IAB node through a transmission link between the network node and the first IAB node, where the transmission connection is provided by a protocol data unit (PDU) session of the first IAB node.

[0012] In a possible implementation, the information of the first IAB node includes at least one of the following: an identifier of the first IAB node, a length of the identifier of the first IAB node, a name of the first IAB node, an identifier of the public land mobile network PLMN to which the first IAB node belongs, a cell identifier of the first IAB node, an absolute radio frequency channel number ARFCN of the first IAB node, a cell search synchronization signal SSB of the first IAB node, a bandwidth part BWP of the first IAB node, a cell status of the first IAB node, a management status of the first IAB node, an Internet Protocol IP address of the first IAB node, an IP address of a host node of the first IAB node, or an identifier of a host node of the first IAB node.

[0013] In a possible implementation, the method further includes:

[0014] The first network management device sends first information to the second network management device, where the first information is used to obtain information about the first IAB node.

[0015] In a possible implementation, the first network management device is a management service producer, a wireless automation engine MAE, or an element management system EMS; the second network management device is a management service consumer or a network management system NMS.

[0016] In a second aspect, a method for information transmission is provided, including: a second network management device determines information of a network node, wherein the information of the network node includes information of a first integrated access and backhaul IAB node; and the second network management device sends the information of the network node to the first network management device.

[0017] In a possible implementation, the information of the first IAB node includes at least one of the following: an identifier of the first IAB node, a length of the identifier of the first IAB node, a name of the first IAB node, an identifier of the public land mobile network PLMN to which the first IAB node belongs, a cell identifier of the first IAB node, an absolute radio frequency channel number ARFCN of the first IAB node, a cell search synchronization signal SSB of the first IAB node, a bandwidth part BWP of the first IAB node, a cell status of the first IAB node, a management status of the first IAB node, an Internet Protocol IP address of the first IAB node, an IP address of a host node of the first IAB node, or an identifier of a host node of the first IAB node.

[0018] In a possible implementation, the method further includes: the second network management device receiving first information sent by the first network management device, where the first information is used to obtain information about the first IAB node.

[0019] In a possible implementation, the first network management device is a management service producer, a wireless automation engine MAE, or an element management system EMS; the second network management device is a management service consumer or a network management system NMS.

[0020] In a third aspect, a method for information transmission is provided, including: a first network management device obtains management data of a network node, wherein the management data of the network node includes management data of a first access and backhaul integrated IAB node; the first network management device sends the management data of the network node to a second network management device, wherein the management data includes fault information and / or performance information.

[0021] Based on the above technical solution, the first network management device obtains the fault information and / or performance information of the network node and sends the fault information and / or performance information of the network node to the second network management device, which can ensure the execution of the first IAB node service and thus improve the user experience.

[0022] In a possible implementation, the method further includes: the first network management device receiving a subscription request message from the second network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first IAB node.

[0023] In a possible implementation, the first network management device sending the management data of the network node to the second network management device includes: the first network management device sending the management data of the network node to the second network management device through a data stream connection.

[0024] In one possible implementation, before the first network management device obtains the management data of the network node, the method further includes: the first network management device sends a data stream connection establishment request message to the second network management device; and the first network management device receives a data stream connection establishment success response message sent by the second network management device.

[0025] In a possible implementation manner, the method further includes: the first network management device sending data flow connection interruption indication information to the second network management device.

[0026] In a possible implementation manner, the second indication information includes an identifier of the first IAB node.

[0027] In a possible implementation, the first network management device is a management service producer, a wireless automation engine MAE, or an element management system EMS; the second network management device is a management service consumer or a network management system NMS.

[0028] In a fourth aspect, a method for information transmission is provided, comprising: a second network management device receives management data of a network node sent by a first network management device, the management data of the network node including management data of a first access and backhaul integrated IAB node, wherein the management data includes fault information and / or performance information.

[0029] In a possible implementation, the method further includes: the second network management device sending a subscription request message to the first network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first IAB node.

[0030] In one possible implementation, before the second network management device receives the management data of the network node sent by the first network management device, the method also includes: the second network management device receives a data stream connection establishment request message sent by the first network management device; the second network management device establishes a data stream connection with the first network management device according to the data stream connection establishment request message; and the second network management device sends a data stream connection establishment success response message to the first network management device through the data stream connection.

[0031] In a possible implementation, the method further includes: the second network management device receives interruption data flow connection indication information sent by the first network management device; and the second network management device interrupts the data flow connection between the second network management device and the first network management device according to the interruption data flow connection indication information.

[0032] In a possible implementation manner, the second indication information includes an identifier of the first IAB node.

[0033] In a possible implementation, the first network management device is a management service producer, a wireless automation engine MAE, or an element management system EMS; the second network management device is a management service consumer or a network management system NMS.

[0034] In a fifth aspect, a communication system is provided, comprising: a first network management device and a second network management device of the method in the first aspect or any possible implementation of the first aspect, wherein the second network management device is used to send information of network nodes to the first network management device.

[0035] In a possible implementation, the second network management device is further configured to determine information about a network node, where the information about the network node includes information about the first integrated access and backhaul IAB node.

[0036] In a possible implementation, the second network management device is further configured to receive first information sent by the first network management device, where the first information is used to obtain information about the first IAB node.

[0037] In the sixth aspect, a communication system is provided, comprising: a first network management device and a second network management device of the method in the first aspect or any possible implementation of the first aspect, the second network management device being used to receive management data of the network node sent by the first network management device, wherein the management data includes fault information and / or performance information.

[0038] In a possible implementation, the second network management device is further configured to send a subscription request message to the first network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first integrated access and backhaul IAB node.

[0039] In one possible implementation, the second network management device is further used to: receive a data stream connection establishment request message sent by the first network management device, establish a data stream connection with the first network management device according to the data stream connection establishment request message, and send a data stream connection establishment success response message to the first network management device through the data stream connection.

[0040] In a possible implementation manner, the second network management device is specifically configured to receive the performance information of the network node sent by the first network management device through the data stream connection.

[0041] In a seventh aspect, a communication device is provided for executing the method in any possible implementation of the first to fourth aspects or the first to fourth aspects.

[0042] In an eighth aspect, a communication device is provided, comprising: a processor, a memory, and an interface, wherein the memory is used to store computer code or instructions, the interface is used for communication, and the processor is used to call and run the computer code or instructions in the memory, such as the method in any possible implementation of the first to fourth aspects or the first to fourth aspects.

[0043] In a ninth aspect, a computer-readable storage medium is provided, wherein the computer-readable medium stores a computer program; when the computer program runs on a computer, the computer executes the method in the first aspect or any possible implementation of the first aspect.

[0044] In the tenth aspect, a computer-readable storage medium is provided, wherein the computer-readable medium stores a computer program; when the computer program runs on a computer, the computer executes the method in the second aspect or any possible implementation of the second aspect.

[0045] In the eleventh aspect, a computer-readable storage medium is provided, wherein the computer-readable medium stores a computer program; when the computer program runs on a computer, the computer executes the method in the third aspect or any possible implementation of the third aspect.

[0046] In the twelfth aspect, a computer-readable storage medium is provided, wherein the computer-readable medium stores a computer program; when the computer program runs on a computer, the computer executes the method in the fourth aspect or any possible implementation of the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of a wireless relay scenario according to an embodiment of the present application.

[0048] Figure 2 Schematic diagram of a network architecture applicable to an IAB node according to an embodiment of the present application.

[0049] Figure 3 This is a schematic block diagram of a communication system 300 according to an embodiment of the present application.

[0050] Figure 4 This is an example diagram of an MnF in an embodiment of the present application playing both the roles of a management service producer and a management service consumer.

[0051] Figure 5 A schematic diagram of a service-oriented management architecture according to an embodiment of the present application.

[0052] Figure 6 A schematic flowchart of an information transmission method according to an embodiment of the present application.

[0053] Figure 7 This is a schematic diagram of the relationship between different IOC objects in an embodiment of the present application.

[0054] Figure 8 This is a schematic diagram of the connection between the IAB node and the gNB-CU through the IOC EP_F1C and EP_F1U interfaces in an embodiment of the present application.

[0055] Figure 9 This is an interactive diagram of another information transmission method according to an embodiment of the present application.

[0056] Figure 10 This is an interactive diagram of another information transmission method according to an embodiment of the present application.

[0057] Figure 11 This is an interactive diagram of another information transmission method according to an embodiment of the present application.

[0058] Figure 12 This is an interactive diagram of another information transmission method according to an embodiment of the present application.

[0059] Figure 13 This is a schematic block diagram of a communication device 1300 according to an embodiment of the present application.

[0060] Figure 14 This is a schematic block diagram of another communication device 1400 according to an embodiment of the present application.

[0061] Figure 15 This is a schematic block diagram of another communication device 1500 according to an embodiment of the present application.

[0062] Figure 16 This is a schematic block diagram of another communication device 1600 according to an embodiment of the present application.

[0063] Figure 17 This is a schematic block diagram of another communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0064] The technical solution in this application will be described below with reference to the accompanying drawings.

[0065] The embodiments of the present application can be applied to various communication systems, such as wireless local area network (WLAN), narrowband Internet of Things (NB-IoT), global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), long term evolution (LTE), satellite communication, fifth generation (5G) system or new communication systems that will appear in the future.

[0066] The terminal devices involved in the embodiments of the present application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem. The terminal may be a mobile station (MS), a subscriber unit (subscriber unit), a user equipment (UE), a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a wireless modem, a handheld device (handset), a laptop computer, a machine type communication (MTC) terminal, etc.

[0067] Compared to the fourth-generation mobile communication system, the fifth-generation mobile communication (5G) network has put forward more stringent requirements for various network performance indicators. For example, the capacity indicator is increased by 1,000 times, and there are wider coverage requirements, ultra-high reliability and ultra-low latency. Considering the abundant high-frequency carrier frequency resources, in hot spots, in order to meet the ultra-high capacity requirements of 5G, the use of high-frequency small base stations to form a network is becoming increasingly popular. High-frequency carrier propagation characteristics are poor, with severe attenuation due to obstruction and a narrow coverage range, so a large number of small base stations need to be deployed densely. Providing fiber optic backhaul for these densely deployed small base stations is costly and difficult to construct, especially in remote areas.

[0068] Integrated access and backhaul (IAB) technology provides a solution to the above problems. Its access link and backhaul link both use wireless transmission solutions, which can avoid fiber optic deployment. Figure 1As shown, a schematic diagram of a wireless relay scenario is presented. In an IAB network, a relay node (RN) can be called an IAB node, which can provide wireless access services for user equipment (UE). The UE's service transmission is transmitted by the IAB host node (donor node) to which the IAB node is connected through a wireless backhaul link. The donor node is also called a donor base station (donor gnodeB, DgNB). An IAB node can play the roles of a mobile terminal (MT) and a distributed unit (DU); when the IAB node faces its parent node, it can be regarded as a terminal device, that is, the role of an MT, where the parent node may be a donor base station; when the IAB node faces its child node, the IAB node can be regarded as a network device, that is, the role of a DU, where the child node may be another IAB node or an ordinary UE. The donor base station can be an access network element with complete base station functions, or an access network element in the form of a centralized unit (CU) and a distributed unit. For ease of presentation, the centralized unit of the donor base station is referred to as the donor CU or simply the CU, and the distributed unit of the donor base station is referred to as the donor DU or simply the DU. The donor CU may also have a separate control plane (CP) and user plane (UP). For example, a CU may consist of a CU-CP and one or more CU-UPs. The donor base station is connected to the core network element serving the UE, such as the 5G core network, and provides wireless backhaul for the IAB node.

[0069] Currently, IAB nodes can obtain operation, administration and maintenance (OAM) services from core network entities through protocol data unit (PDU) sessions between the IAB node and the OAM entity. The transport connection between the IAB node and its OAM entity uses the IP protocol and is provided by the IAB-MTs PDU session over the 5G network, or when the IAB-MT uses EN-DC, it is provided by the IAB-MTs PDN connection over the LTE network. However, the standard does not define the specific transmission on the network management device side, nor does it specify how the new 5G quality of service indicator (5QI) is defined. In addition, the IAB node can directly obtain OAM services from the OAM entity via the backhaul link, but the specific transmission method is not reflected in the protocol.

[0070] OAM services include receiving commands, such as those related to fault management (FM), configuration management (CM), and performance management (PM); configuration data; software downloads, such as for device software upgrades; alarms; and performance metrics. Alarms generate high-priority traffic bursts, but do not require real-time transmission. Configuration data sent by OAM entities to IAB nodes also generates a small amount of burst traffic, which has a lower priority than alarms but is still sensitive to latency.

[0071] In order to facilitate the understanding of the embodiments of this application, Figure 2 Figure 1 shows a network architecture diagram applicable to IAB nodes. The IAB donor node (IAB-Donor gNB) is a base station that can serve IAB nodes via a wireless connection. An IAB-Donor gNB consists of an IAB-Donor-CU and one or more IAB-Donor-DUs. If the gNB-CU-CP and gNB-CU-UP are separate, an IAB-donor gNB can consist of one IAB-donor-CU-CP, multiple IAB-donor-CU-UPs, and multiple IAB-donor-DUs.

[0072] like Figure 3 As shown, a communication system 300 provided in an embodiment of the present application is shown. The communication system 300 includes: a first network management device 310 and a second network management device 320.

[0073] In one implementation, the second network management device is configured to send network node information to the first network management device. The first network management device is configured to receive network node information from the second network management device, the network node information including information of the first integrated access and backhaul (IAB) node; and the first network management device is further configured to configure the network node information.

[0074] Optionally, the second network management device is further configured to determine information of a network node, where the information of the network node includes information of the first IAB node.

[0075] Optionally, the first network management device is further configured to send first information to the second network management device, where the first information is used to obtain information about the first IAB node.

[0076] Optionally, the second network management device is further configured to receive first information sent by the first network management device.

[0077] Optionally, the first network management device is further configured to send information of the first IAB node to the network node.

[0078] Optionally, the first network management device is further configured to send the information of the first IAB node to a network node, so that the network node sends the information of the first IAB node to the first IAB node.

[0079] In another implementation:

[0080] The first network management device is used to obtain management data of the network node, and the management data of the network node includes management data of the first integrated access and backhaul IAB node; the first network management device is also used to send the management data of the network node to the second network management device, wherein the management data includes fault information and / or performance information.

[0081] The second network management device is used to receive the management data of the network node sent by the first network management device.

[0082] Optionally, the second network management device is further used to send a subscription request message to the first network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first integrated access and backhaul IAB node.

[0083] Optionally, the first network management device is further configured to receive a subscription request message from the second network management device.

[0084] Optionally, the first network management device is further configured to send a data stream connection establishment request message to the second network management device, and receive a data stream connection establishment success response message sent by the second network management device.

[0085] Optionally, the second network management device is also used to: receive a data stream connection establishment request message sent by the first network management device, establish a data stream connection between the device and the first network management device according to the data stream connection establishment request message, and send a data stream connection establishment success response message to the first network management device through the data stream connection.

[0086] Optionally, the first network management device is further configured to send management data of the network node to the second network management device via a data stream connection.

[0087] Optionally, the second network management device is specifically used to: receive the performance information of the network node sent by the first network management device through the data stream connection.

[0088] The first network management device can be a management service producer, a management service consumer, a domain management functional unit, a wireless automation engine (MBB automation engine, MAE) or an element management system (EMS); the second network management device can be a management service consumer, a management service producer, a cross-domain management functional unit or a network management system (NMS).

[0089] A management function (MnF) is a management entity defined by the 3rd Generation Partnership Project (3GPP). Its externally visible behaviors and interfaces are defined as management services. In the service-providing management architecture, MnF plays the role of a management service producer (MnS Producer) or a management service consumer (MnS Consumer). The management services produced by the MnF's management service producer may have multiple consumers. MnF can consume multiple management services from one or more management service producers. For example Figure 4 As shown, an example diagram is presented in which MnF plays the roles of both management service producer and management service consumer.

[0090] For example, the management service consumer MnS Consumer may be a management entity such as a network management system (NMS), and the management service producer MnS Producer may be a management entity such as an element management system (EMS) or a wireless automation engine (MAE), but this embodiment of the present application does not limit this.

[0091] Figure 5A schematic diagram of a service-oriented management architecture provided for an embodiment of the present application. The service-oriented management architecture includes a business support system (BSS), a cross-domain management function (CD-MnF), a domain management function (Domain-MnF), and a network element. It should be understood that the cross-domain management function may be a node such as an NMS, MnS Producer, or MnS Consumer, and the domain management function may be a node such as an EMS, MAE, MnS Producer, or MnS Consumer.

[0092] If the management service is a management service provided by a cross-domain management functional unit, the cross-domain management functional unit is the management service producer, and the business support system is the management service consumer.

[0093] If the management service is a management service provided by a domain management functional unit, the domain management functional unit is the management service producer, and the cross-domain management functional unit is the management service consumer.

[0094] When the management service is a management service provided by a network element, the network element is the management service producer and the domain management functional unit is the management service consumer.

[0095] Business support systems (BSSs) are oriented towards communications services and provide functions and management services such as billing, settlement, accounting, customer service, sales, network monitoring, communications service lifecycle management, and business intent translation. BSSs can be either carrier operations systems or vertical industry operations systems (OT systems).

[0096] The cross-domain management function unit, also known as the network management function unit (NMF), can be a network management entity such as a network management system (NMS) or a network function management service consumer (NFMS_C). The cross-domain management function unit provides one or more of the following management functions or services: network lifecycle management, network deployment, network fault management, network performance management, network configuration management, network assurance, network optimization, and translation of service producer's network intent (intent from communication service provider, Intent-CSP).

[0097] Among them, the network referred to in the above-mentioned management function or management service may include one or more network elements or subnetworks, or a network slice. That is to say, the network management function unit may be a network slice management function unit (NSMF), or a cross-domain management data analytical function unit (MDAF), or a cross-domain self-organization network function (SON Function) or a cross-domain intent management function unit (MnS).

[0098] Optionally, in certain deployment scenarios, the cross-domain management functional unit can also provide sub-network lifecycle management, sub-network deployment, sub-network fault management, sub-network performance management, sub-network configuration management, sub-network assurance, sub-network optimization functions, sub-network service producer network intent (Intent-CSP) or sub-network service consumer network intent (Intent from communication service consumer, Intent-CSC) translation, etc. The sub-network here consists of multiple small sub-networks, which can be network slicing sub-networks.

[0099] The domain management function (Domain-MnF) is also called the network management function (NMF) or the network element management function. For example, the domain management function can be a network element management entity such as the MBB automation engine (MAE), the element management system (EMS), or the network function management service provider (NFMS_P).

[0100] The domain management functional unit provides one or more of the following functions or management services: lifecycle management of sub-networks or network elements, deployment of sub-networks or network elements, fault management of sub-networks or network elements, performance management of sub-networks or network elements, assurance of sub-networks or network elements, optimization of sub-networks or network elements, and translation of intents from network operators (Intent-NOPs) for sub-networks or network elements. A sub-network here includes one or more network elements. A sub-network may also include sub-networks, i.e., one or more sub-networks form a larger sub-network.

[0101] Optionally, the subnetwork here can also be a network slice subnetwork. The domain management system can be a network slice subnet management function unit (NSSMF), a domain management data analytical function unit (Domain MDAF), a domain self-organization network function (SON Function), or a domain intent management function unit IntentDriven MnS, etc.

[0102] The domain management functional units can be classified as follows:

[0103] According to the network type, it can be divided into: access network domain management function unit (radio access network domain management function, RAN-Domain-MnF), core network domain management function unit (core network domain management function, CN-Domain-MnF) and transport network domain management function unit (transport network domain management function, TN-Domain-MnF). It should be noted that the domain management function unit can also be a domain network management system, which can manage one or more of the access network, core network or transport network;

[0104] According to administrative region classification, it can be divided into: domain management functional units of a certain region, such as Shanghai domain management functional unit, Beijing domain management functional unit, etc.

[0105] Network elements are entities that provide network services, including core network elements and access network elements. Core network elements include: access and mobility management function (AMF), session management function (SMF), policy control function (PCF), network data analytical function (NWDAF), network repository function (NRF), and gateways. Access network elements include: base stations (such as gNBs and eNBs), central unit control plane (CUCP), central unit (CU), distributed unit (DU), and central unit user plane (CUUP).

[0106] Among them, the network element can provide one or more of the following management functions or management services: network element lifecycle management, network element deployment, network element fault management, network element performance management, network element assurance, network element optimization function and network element intent translation, etc.

[0107] The embodiment of the present application proposes a method for information transmission to realize the transmission of OAM services and improve user experience. Figure 6 As shown, a schematic flow chart of an information transmission method according to an embodiment of the present application is shown.

[0108] 610. The second network management device determines information of a network node, where the information of the network node includes information of a first integrated access and backhaul IAB node.

[0109] It should be understood that the information of the first IAB node is included in the management object of the network node, wherein the management object of the network node may be the management object of the core network node or the management object of the base station. For example, the management object of the core network node may be AMFFunction IOC, UPFFunction IOC, etc., and the management object of the base station node may be ManagedElement IOC, gNBDUFunction IOC, gNBCUUPFunction IOC, gNBCUCPFunction IOC, NRcellCU IOC, NRcellDU IOC, NRcellRelation IOC, ENBFunction IOC, EUtranCell IOC, or EUtranRelation IOC, etc. Optionally, the management object of the base station may also be defined as IABnode IOC or IABnodecell IOC.

[0110] In one implementation, the second network management device can independently determine information about one or more network nodes, that is, independently determine that information needs to be sent to the first IAB node. For example, the second network management device determines information about one or more network nodes, including information about one or more IAB nodes, and sends the network node information to the first network management device. After the first network management device sends the network node information to the network node, the network node configures the IAB node information for the IAB node based on the IAB node's access to the network.

[0111] In another implementation, after a first IAB node accesses the network, the network node sends first information to a first network management device. The first network management device then sends the first information to a second network management device. The second network management device determines information about the first IAB node based on the first information and sends the information to the first IAB node. Specifically, the first network management device may send first information to the second network management device, where the first information is used to obtain information about the first IAB node; the second network management device then receives the first information sent by the first network management device. It should be understood that the first information sent by the first network management device to the second network management device may be included in information about the network node, that is, the first information may be included in a management object of the network node.

[0112] It should be understood that the network node may be a core network node or a base station node, wherein the core network node may be an LTE core network node, such as an MME, SGW, or a 5G NR core network node AMF, UPF, or other nodes, and the base station node may be a gNB, en-gNB, ng-eNB, eNB, gNB-CU, gNB-DU, gNB-CU-CP, gNB-CU-UP, eNB cell, gNB cell, gNB-DUcell, or gNB-CUcell; optionally, the base station node may also be an IAB node or IAB node cell. The first network management device may be a management service producer, a management service consumer, a domain management function unit, a wireless automation engine (MBB automation engine, MAE), or an element management system (EMS); the second network management device may be a management service consumer, a management service producer, a cross-domain management function unit, or a network management system (NMS).

[0113] Optionally, the network node may also refer to an adjacent network node of the network node, or a neighboring area (or neighboring cell) of the network node. Accordingly, the information of the network node includes information of the adjacent network nodes of the network node or information of the neighboring area of ​​the network node. The information of the neighboring area of ​​the network node can also be understood as information about the neighboring area relationship of the network node.

[0114] Optionally, the information of the network node includes information of the core network node or the base station node, for example, one or more of the following information: the name of the base station, the identifier of the base station, the identifier of the cell (for example, PCI, CGI, etc.), the name of the adjacent base station, the identifier of the adjacent base station, the identifier of the neighboring cell (for example, PCI, CGI, etc.), the identifier of the PLMN, the name of the core network node, the identifier of the core network node, etc. This embodiment is not limited to this, and any information related to the configuration of the core network node or base station node can be included, which will not be repeated here.

[0115] The information of the first IAB node includes one or more of the following information: an identifier of the first IAB node, a length of the identifier of the first IAB node, a name of the first IAB node, an identifier of a public land mobile network (PLMN) to which the first IAB node belongs, a cell identifier of the first IAB node, an absolute radio frequency channel number (ARFCN) of the first IAB node, a cell search synchronization signal (SS / PBCH block, SSB) of the first IAB node, a bandwidth part (BWP) of the first IAB node, a cell status of the first IAB node (for example, active, inactive, etc.), a management status of the first IAB node (for example, locked, shutting down, unlocked, etc.), an Internet Protocol (IP) address of the first IAB node, an IP address of a donor node of the first IAB node (for example, an IAB-donor-CU), an identifier of the donor node of the first IAB node, and capability information of the first IAB node. It should be understood that the identifier of the first IAB node includes one or more of the local identifier LocalcellID of the first IAB node or the physical cell identifier of the first IAB node, and the tracking area identifier TAC of the first IAB node; the ARFCN of the first IAB node includes one or more of the downlink ARFCN, uplink ARFCN, and supplementary uplink ARFCN of the IAB node cell; the SSB of the first IAB node includes one or more of the SSB frequency (SSBfrequency), SSB period (SSBPeriodicity), SSB offset (SSBoffset), SSB duration (SSBDuration), and SSB subcarrier spacing (SSBsubcarrierspacing) of the IAB node cell; the bandwidth part of the first IAB node includes one or more of the baseband uplink channel bandwidth (BSchannelBWUL) and baseband supplementary uplink channel bandwidth (BSchannelBWSUL) of the IAB node cell.

[0116] Among them, the IP address of the first IAB node can be an IPv4 address or an IPv6 address, and the IP address is the IP address used by the first IAB node for data interaction. The IP address of the host node of the first IAB node refers to the IP address of the host node (such as IAB-donor-CU) of the IAB node to which the first IAB node is connected through an interface (such as an F1 interface), such as an IPv4 address or an IPv6 address, and the IP address is the IP address used by the first IAB node to interact with the host node of the IAB node through the interface. The identifier of the host node of the first IAB node is used to identify that the IP address is the host node of the IAB node. The IAB capability information is used to indicate whether the network node supports the IAB function, or it can also be understood as whether the network node supports the IAB node, or it can also be understood as whether the network node supports the access of the IAB node. For example, the capabilities of IAB can be indicated using "is IAB Allowed" or "IAB Supported".

[0117] Optionally, the information of the first IAB node may also exist as a management object IOC, such as IAB nodeInformation IOC. The IAB node Information IOC is associated with a network node, such as a network node AMFIOC, UPF IOC, GNBCUCP IOC, or NRCellRelationIOC.

[0118] Optionally, the first information may include an identifier of the first IAB node, which is used to indicate the acquisition of information about the first IAB node. The identifier of the first IAB node may be identification information such as a physical cell identifier (PCI), a cell global identifier (CGI), or a cell identifier (cell ID), which is not limited in this application. For example, the first information is IAB node indication information or IAB node configuration request indication information. The MAE sends the IAB node indication information or IAB node configuration request indication information to the NMS to indicate the acquisition of information about the first IAB node. The IAB node indication information or IAB node configuration request indication information may be sent through an existing operation between the MAE and the NMS, or through a newly defined operation.

[0119] Optionally, the first information further includes identification information of a network node, indicating that the information of the first IAB node is configured by the network node. For example, the identification information of the network node may be an AMF ID or a UPF ID.

[0120] Optionally, the first information indicates an IAB node, that is, indicates that an IAB node has accessed the network. For example, the first information is IAB node indication information, which is sent by MAE to NMS to indicate the acquisition of information about the first IAB node. The IAB node indication information can be sent through an existing operation between MAE and NMS, or through a newly defined operation. Specifically, optionally, after the first IAB node accesses the wireless network, the first IAB node can send an IAB node indication to the base station, and the IAB node indication is used to indicate that the first IAB node has accessed the network. The base station then sends the IAB node indication to a core network device, such as an access and mobility management function (AMF), and the AMF then sends the IAB node indication to a network management device, so that the network management device sends the information of the first IAB node to the first IAB node.

[0121] Optionally, the first information may be integrated access and backhaul node list (IAB node list) indication information, used to indicate that more than one first IAB node has accessed the wireless network. The IAB node list indication information is used to obtain information of the multiple first IAB nodes.

[0122] Optionally, the first information may also exist as a management object IOC, such as an IAB node Indication IOC, and the IAB node Indication IOC is associated with a network node, such as an AMF or UPF.

[0123] For example, as shown in Table 1, the first information is added to the AMF information object class (IOC) defined in the network resource model (NRM), such as IABnode indication, which can be called iABnodeIndication, or other names.

[0124] Table 1 Example of adding IAB node indication in AMF IOC

[0125]

[0126] Among them, M is mandatory and CM is conditionally mandatory, that is, the iAB node indication is only present when the IAB feature is supported. Except for the IAB node indication, the remaining attributes are parameters already supported in the existing technology and will not be repeated here.

[0127] For example, as shown in Table 2, information of adding the first IAB node in the UPF IOC defined in the NRM model is shown, for example, called iABnodeInformation, or iABnodeConfiguration, or other names.

[0128] Table 2 Example of adding IAB node configuration in UPF IOC

[0129]

[0130] Among them, M is mandatory and CM is conditionally mandatory, that is, the iAB node indication is only present when the IAB feature is supported. Except for the IAB node configuration, the remaining attributes are parameters already supported in the existing technology and will not be repeated here.

[0131] For example, as shown in Table 3, an NRM model for determining the information of the first IAB node for the neighboring area of ​​the network node is presented, wherein the information of the first IAB node is added to the NRCellRelationIOC defined in the NRM model, where the information of the first IAB node refers to the capabilities supported by the IAB function, for example, isIABAllowed, or other names.

[0132] Table 3 Example of adding IAB functional support capabilities in NR Cell Relation IOC

[0133]

[0134]

[0135] Among them, M is mandatory and CM is conditionally mandatory, that is, the isIABAllowed indication is only present when the IAB feature is supported. Except for the isIABAllowed indication, the remaining attributes are parameters already supported in the prior art and will not be described here.

[0136] For example, as shown in Tables 4 and 5, an NRM model for determining information of a first IAB node for a network node is shown, wherein the information of the first IAB node is added to the AMF IOC or MME IOC defined in the NRM model. Here, the information of the first IAB node refers to the ability of the network node to support IAB, for example, referred to as IAB supported, or other names.

[0137] Table 4 Example of adding IAB functionality support capabilities in AMF IOC

[0138]

[0139] Among them, M is mandatory and CM is conditionally mandatory, that is, the IABsupported indication is only present when the IAB feature is supported. Except for the IABsupported indication, the remaining attributes are parameters already supported in the existing technology and will not be repeated here.

[0140] Table 5 Example of adding IAB functionality support capabilities in MME IOC

[0141]

[0142] Among them, M is mandatory and CM is conditionally mandatory, which means that the IAB supported indication is only present when the IAB feature is supported. Except for the IAB supported indication, the remaining attributes are already supported parameters in the existing technology and will not be repeated here. For details, please refer to 3GPP TS 28.708.

[0143] 620. The second network management device sends network node information to the first network management device, where the network node information includes information of the first IAB node.

[0144] Specifically, after the second network management device determines to send information to the first IAB node or determines that the first IAB node accesses the wireless network according to the received indication information, it may send the network node information to the first network management device.

[0145] It should be noted that the second network management device may send the network node information to the first network management device through existing operations, such as create MOI operation, modify MOI Attributes operation or delete MOI operation, or may use a newly defined operation, which is not limited in this embodiment.

[0146] It should also be noted that the network node information can also be understood as network function-related requirements, which are the information model definitions of the NRM. For example, the contents in Tables 1 and 2 are the information models of the AMF IOC and UPF IOC defined by the NRM.

[0147] 630. The first network management device receives the network node information sent by the second network management device, where the network node information includes the information of the first IAB node.

[0148] 640. The first network management device configures information of the network node.

[0149] It should be noted that the information in which the first network management device configures the network node includes information in which the first network management device configures the first IAB node in the management object of the network node. The management object of the network node may be a management object of a core network node or a management object of a base station. For example, the management object of the core network node may be an AMF Function IOC, a UPF Function IOC, etc., and the management object of the base station node may be a gNB DU Function IOC, a gNB CU UP Function IOC, a gNB CU CP Function IOC, an NRcell CU IOC, an NR cell DUIOC, an NR cell Relation IOC, an ENB Function IOC, an EUtran Cell IOC, or an EUtran Relation IOC, etc. Optionally, the base station node may also be an IAB node or an IAB node cell.

[0150] Optionally, when the network node in step 610 refers to a neighboring network node of the network node, or a neighboring cell of the network node, it can also be understood that the first network management device configures the information of the first IAB node in the management object of the neighboring network node of the network node or the management object of the neighboring cell of the network node (e.g., a neighboring cell relationship management object). The management object of the neighboring network node of the network node may be a management object of a core network node or a base station node. For example, the management object of the core network node may be an AMFFunction IOC, a UPF Function IOC, etc., and the management object of the base station node may be a gNB DU Function IOC, a gNB CU UP Function IOC, a gNB CU CP Function IOC, an NR cell CU IOC, an NR cell DU IOC, an ENB Function IOC, etc. The management object of the neighboring cell of the network node may be a management object of a neighboring cell of a base station, such as an NR cell Relation IOC, etc.

[0151] Optionally, when the createMOI operation is executed in step 620, before this step, the first network management device creates an object of the network node to be created. For example, the object of the network node may be an AMF IOC, a UPF IOC, etc.

[0152] Optionally, the first network management device sends a response message to the second network management device. The response message may include an identifier of the first network management device and / or an identifier of the network node object. The response message may use an existing operation, such as CreateMOI response, or a newly defined operation, which is not limited in the present invention.

[0153] Optionally, the first network management device sends information about the first IAB node to the network node. The information about the first IAB node is capability information of the first IAB node.

[0154] Optionally, the first network management device sends information about the first IAB node to a network node, causing the network node to send information about the first IAB node to the first IAB node. It should be understood that the network node may be a core network node or a base station node, wherein the core network node may be an AMF, UPF, MME, SGW, or other node, and the base station node may be a gNB, en-gNB, eNB, gNB-CU, gNB-DU, gNB-CU-CP, gNB-CUcell, gNB-DUcell, or gNB-CU-UP; the first network management device may be a management service producer, a management service consumer, a domain management functional unit, a wireless automation engine (MBB automation engine, MAE), or an element management system (EMS); and the second network management device may be a management service consumer, a management service producer, a cross-domain management functional unit, or a network management system (NMS).

[0155] Optionally, the transmission link between the first IAB node and the network node is provided by the protocol data unit PDU session of the first IAB node. It should be understood that the transmission connection between the IAB-node and the first network management device or the second network management device uses IP and is provided by the PDU session of the IAB-MT through the 5G network, or when the IAB-MT uses a multi-link architecture, it is provided by the PDN connection of the IAB-MT through the LTE network.

[0156] Specifically, after receiving the information of the network node, the first network management device sends the information of the network node to the core network device, which may be a user plane function (UPF). The UPF then sends the information of the first IAB node to the base station, and the base station then sends the information of the first IAB node to the first IAB node.

[0157] In the technical solution provided by the embodiment of the present application, the first network management device receives information of the first IAB node sent by the second network management device, and the first network management device configures the first IAB node according to the information of the first IAB node, which can ensure the execution of the first IAB node service, thereby improving the user experience.

[0158] Regarding the transmission mode in which the IAB node directly obtains OAM services from the OAM entity via the backhaul link, the embodiment of the present application proposes another information transmission method, which adds an IAB node function object type. The specific example is as follows:

[0159] The network resource management (NRM) model of the IAB node defines the information object class (IOC) IAB node function object and IAB node cell object. The IAB node cell object is managed by the IAB node function object, and the IAB node function object is managed by the IOC management entity (e.g., ManagedElement IOC). Figure 7 As shown, a schematic diagram of the relationship between different IOC objects is presented.

[0160] The NRM transmission model (EPs) of the IAB node defines EP_F1C IOC and EP_F1U IOC as interfaces between the IAB node and the gNB-CU. The gNB-CU may include the gNB-CU-CP and the gNB-CU-UP. The EP_F1CIOC and EP_F1UIOC include the local and remote IP addresses, such as the IP address of the IAB node and the IP address of the gNB-CU (such as the IAB donor CU). The IP addresses may be IPv4 addresses or IPv6 addresses, and the IP addresses are determined by the second network management device. Figure 8 Figure 1 shows a schematic diagram of the connection between the IAB node and the gNB-CU through the IOC EP_F1C and EP_F1U interfaces.

[0161] Add related attributes of IAB node and IAB node cell. Attributes of IAB node: may include one or more of IABnode ID, IAB node ID length, IAB node Name, and PLMNID, which are not limited in the embodiments of the present application. Attributes of IAB node cell: may include one or more of IAB node cell Local ID (IAB cell local identifier, such as CGI, etc.), PCI (Physical cell ID, physical cell identifier), TAC, ARFCN (absolute radiofrequency channel number, absolute frequency point number, including uplink and downlink), SSB Frequency (SSB frequency point), SSB subcarrier spacing (SSB subcarrier spacing), SSB offset (SSB offset), BWP information, etc.

[0162] The IAB node communicates directly with the network management device via an IP backhaul link. The network management device can be either an MnS consumer or an MnS producer, though this is not a limitation in this application. It should be noted that in this embodiment, the IAB node and IAB node cell can be independently modeled or combined. This description uses independent modeling as an example.

[0163] In addition, the present embodiment defines a new 5QI. FM and CM services are both latency-sensitive services, and CM services may have a lower priority than FM. PM is a non-latency-sensitive service, generally reported in a 5- to 25-minute cycle, but with a maximum burst size limit, and has the lowest priority.

[0164] Optionally, FM data can be classified into 5QI levels according to the following categories: hardware failures, software problems, functional faults, loss of some or all of the network element's specified capability due to overload situations, and communication failures between two network elements.

[0165] Optionally, PM data is classified into 5QI categories according to the following categories: network function performance management (NF PM), network slice subnet instance performance management (NSSI PM), network slice instance performance management (NSI PM), and network performance management (NW PM).

[0166] Optionally, CM can perform 5QI classification based on basic configuration and software version update. Basic configuration refers to one or more parameter configurations such as cell, base station, slice, etc. For example, the configuration of the cell includes the cell name, identification, frequency, etc.

[0167] 5G quality of service (QoS) characteristics related to 5QI include one or more of the following, but are not limited to:

[0168] (1) Resource type: guaranteed bit rate (GRB), severely delayed GRB, or non-GRB;

[0169] (2) Priority level;

[0170] (3) Packet delay budget, including the packet delay budget of the core network;

[0171] (4) Packet error rate;

[0172] (5) Averaging window, limited to GRB or GRB resource types with severe delay;

[0173] (6) Maximum data burst volume, limited to GRB resource types with severe latency.

[0174] As shown in Table 6, an example of the 5QI definition in an embodiment of the present application is presented.

[0175] Table 6 An example of 5QI definition

[0176]

[0177] This embodiment of the present application proposes another method for information transmission. Optionally, this method may be performed after method 600 is performed. The method includes:

[0178] The first network management device obtains management data of a network node, where the management data of the network node includes management data of a first integrated access and backhaul (IAB) node. The management data may include fault information, performance information, or both. In other words, the first network management device may obtain fault information or performance information of the first IAB node, or may obtain both fault information (or alarm information) and performance information of the first IAB node.

[0179] It should be understood that the network node can be a core network node or a base station node, wherein the core network node can be a node such as AMF, UPF, MME, SGW, and the base station node can be a gNB, en-gNB, eNB, gNB-CU, gNB-DU, gNB-CU-CP, gNB-CUcell, gNB-DUcell or gNB-CU-UP; the first network management device can be a management service producer, a management service consumer, a domain management function unit, a wireless automation engine (MBB automation engine, MAE) or an element management system (element management system, EMS); the second network management device can be a management service consumer, a management service producer, a cross-domain management function unit or a network management system (NMS).

[0180] It should also be understood that the first network management device acquiring the management data of the network node is preparing the data of the network node.

[0181] It should be noted that the first network management device may obtain the management data of the network node directly from the network node or through other means, which is not limited in this application.

[0182] Specifically, the first network management device may obtain the fault information and / or performance information of the first IAB node from a core network device. The core network device may be a user plane function (UPF). The fault information and / or performance information of the first IAB node may be obtained by the UPF from the base station.

[0183] Optionally, before the first network management device obtains the management data of the network node, the second network management device may send a subscription request message to the first network management device, and the first network management device receives the subscription request message sent by the second network management device. Optionally, the subscription request message includes second indication information for instructing the acquisition of the management data of the first IAB node, and the first network management device obtains the management data of the network node based on the second indication information. Optionally, the second indication information may include an identifier of the first IAB node. Accordingly, optionally, the second network management device may send a management data unsubscription request message to the first network management device, and the unsubscription request message includes third indication information for instructing the cancellation of the subscription to the management data of the first IAB node.

[0184] It should be noted that the subscription request message may use an existing operation, such as the subscribe operation, or a newly defined operation, which is not limited in this application. Correspondingly, the unsubscribe request message may use an existing operation, such as the unsubscribe operation, or a newly defined operation, which is not limited in this application.

[0185] It should be understood that the subscription request message may be used only to subscribe to the fault information of the first IAB, or only to subscribe to the performance information of the first IAB, or may be used to subscribe to both the fault information and the performance information of the first IAB.

[0186] Optionally, before the first network management device obtains the management data of the network node, the second network management device may send a request message for obtaining alarm information to the first network management device to obtain fault information of the first IAB node. Optionally, the request message for obtaining alarm information includes second indication information for indicating that the fault information of the first IAB node should be obtained, and the first network management device obtains the fault information of the network node based on the second indication information. Optionally, the second indication information may include an identifier of the first IAB node. It should be noted that the request message for obtaining alarm information may use an existing operation, such as the get alarm list operation, or a newly defined operation, which is not limited in this application.

[0187] Optionally, before the first network management device obtains the management data of the network node, the first network management device may also send a data stream connection establishment indication message to the second network device, and obtain the performance information of the first IAB node based on the data stream connection establishment success response message received from the second network management device. It should be understood that the data stream connection establishment success response message is used to indicate that a data stream connection has been established between the first network management device and the second network management device. It should be noted that the data stream connection establishment indication message can use an existing operation, such as the establishstreaming connection operation, or a newly defined operation, and this application does not limit this.

[0188] Optionally, the first network management device may also obtain the management data of the network node on its own, that is, without receiving any indication message, the first network management device obtains the fault information and / or performance information of the first IAB node on its own. It should be noted that the fault information of the first IAB node includes: fault information type (such as "communication alarm", "processing error alarm", "environmental alarm", etc.), fault start time or fault cause, etc. The fault information of the IAB node is not limited to this, and any information related to the fault can be included. The performance information of the first IAB node includes data packet transmission delay, wireless resource utilization, throughput or number of RRC connections, etc. The performance information of the IAB node is not limited to this, and any information related to the performance can be included.

[0189] The first network management device sends management data of the network node to the second network management device, where the management data of the network node includes management data of the first IAB node.

[0190] If the management data requested by the second network management device through the subscription request message is fault information, the first network management device responds to the request and sends the fault information to the second network management device, for example, by carrying the fault information of the first IAB node in the existing notify new alarm (notifynewalarm) operation, or by carrying the changed fault information of the first IAB node in the existing notify change alarm (nofifyChangeAlarm) operation, or by other newly defined operations. The embodiments of the present application do not impose any restrictions on this.

[0191] If the management data requested by the second network management device through the subscription request message is performance information, the first network management device responds to the request and sends information that the performance information is ready to the second network management device, so that the second network management device obtains the performance information from the second network management device. For example, the indication that the performance information of the first IAB node is ready is carried in the existing notifyFileReady operation and sent to the second network management device, or the indication that the performance information of the first IAB node is ready is carried in other newly defined operations. The embodiments of the present application do not impose any restrictions on this.

[0192] If the management data obtained by the second network management device through the alarm information request message is fault information, the first network management device responds to the request and sends the fault information to the second network management device, for example, by adding the fault information of the first IAB node to the response (e.g., output) in the existing getalarmlist operation, or by other newly defined operations. This embodiment of the present application does not impose any restrictions on this.

[0193] like Figure 9 As shown, an interactive schematic diagram of an information transmission method according to an embodiment of the present application is presented. The specific steps include:

[0194] 910. The second network management device sends a subscription request message to the first network management device, requesting to subscribe to the fault information or alarm information of the first IAB node.

[0195] Specifically, the object of the subscription operation is a core network entity, such as UPF, AMF, etc. Optionally, in an architecture where the IAB node directly transmits information to the network management device via an IP backhaul link, the object of the subscription operation may also be an IAB node.

[0196] Optionally, the subscription request message includes second indication information, such as an IABnodeAlarm indication, which is used to obtain fault information or alarm information of the first IAB node. In this embodiment, obtaining fault information is taken as an example.

[0197] 920. The first network management device obtains fault information of the network node according to the subscription request message, where the fault information of the network node includes fault information of the first IAB node.

[0198] 930. The first network management device sends fault information of the network node to the second network management device.

[0199] Specifically, the first network management device sends a notify new alarm (notify new alarm) operation to the second network management device, and the notify new alarm message carries the fault information of the first IAB node.

[0200] Optionally, the notification of a new alarm operation further carries an identifier of the first IAB node. The identifier of the first IAB node may exist independently in the operation or be included in the second indication information, which is not limited in this application.

[0201] 940. The second network management device receives the fault information sent by the first network management device.

[0202] In another implementation, optionally, before the first network management device obtains the management data of the network node, the second network management device may also send a get alarm list message to the first network management device, where the message is used to obtain the fault information of the first IAB node. Figure 10 FIG. 1 shows an interactive diagram of another information transmission method according to an embodiment of the present application. The specific steps include:

[0203] 1010. The second network management device sends a get alarm list (getalarmlist) message to the first network management device. An IAB node alarm (IABnodealarm) acquisition instruction may be added to the operation message, and the instruction is used to instruct to obtain fault information of the first IAB node.

[0204] Specifically, the object of the alarm list acquisition operation is a core network entity, such as UPF, AMF, etc. Optionally, in an architecture where the IAB node directly transmits information to the network management device via an IP backhaul link, the object of the subscription operation may also be an IAB node.

[0205] For example, the IABnodealarm indication is added to the Input parameter of getalarmlist, or the IABnodealarm indication is added to the existing alarmAckState attribute of Input. IABnode fault information, such as IABnodeAlarminformation, is added to the Output parameter of getalarmlist. The IABnodeAlarminformation includes the fault type (e.g., "communication alarm," "processing error alarm," "environmental alarm," etc.), fault start time, or fault cause. The IABnode fault information is not limited to this and can include any information related to the fault.

[0206] 1020. The first network management device obtains fault information of the network node according to the get alarm list message, where the fault information of the network node includes fault information of the first IAB node.

[0207] 1030. The first network management device sends the fault information of the first IAB node to the second network management device by carrying it in an IAB alarm information list (IABalarminformationlist) message, or sends it to the second network management device through other newly defined messages. This embodiment of the present application does not impose any limitation on this.

[0208] 1040. The second network management device receives the fault information sent by the first network management device.

[0209] In another implementation, if the management data requested by the second network management device through the subscription request message is performance information, the first network management device may also send the performance information to the second network management device through an existing message, for example, by carrying the performance information of the first IAB node in an existing notify file ready message, or by sending the information to the second network management device through a newly defined message. Figure 11 FIG. 1 shows an interactive diagram of another information transmission method according to an embodiment of the present application. The specific steps include:

[0210] 1110. The second network management device sends a subscription request message to the first network management device, requesting to subscribe to performance information.

[0211] Optionally, the subscription request message includes second indication information, where the second indication information is used to obtain performance information of the first IAB node;

[0212] It should be understood that the object of the subscription operation is a core network entity, such as UPF, AMF, etc. Optionally, in an architecture where the IAB node directly transmits information to the network management device via an IP backhaul link, the object of the subscription operation may also be the IAB node.

[0213] 1120. The first network management device obtains performance information of the network node according to the received subscription request message, where the performance information of the network node includes performance information of the first IAB node.

[0214] 1130. The first network management device performs a response operation and sends a notifyfileready operation to the second network management device. The notifyfileready operation carries an indication that the performance information of the first IAB node is ready (eg, IABperformancenotification).

[0215] Optionally, the notification file preparation operation includes an identifier of the first IAB node, which is used to indicate the first IAB node whose performance data is prepared.

[0216] 1140. The second network management device receives the performance information sent by the first network management device.

[0217] Optionally, before the first network management device obtains the management data of the network node, it may send a data stream connection establishment request message to the second network management device, and the data stream connection establishment request message is used to obtain the performance information of the first IAB node; the second network management device establishes a data stream connection with the first network management device based on the data stream connection establishment request message; and sends a data stream connection establishment success response message to the first network management device, and the data stream connection establishment success response message is used to indicate that the data stream connection between the first network management device and the second network management device has been established; the first network management device sends the performance information of the first IAB node to the second network management device through the data stream connection.

[0218] Specifically, if the first network management device sends the performance information of the first IAB node to the second network management device through a data stream connection, the first network management device can send the performance information to the second network management device through an existing message, for example, carrying the performance information of the first IAB node in an existing report stream data (reportstreamdata) operation message, or sending it to the second network management device through a newly defined message.

[0219] like Figure 12 FIG. 1 shows an interactive diagram of another information transmission method according to an embodiment of the present application. The specific steps include:

[0220] 1210. The first network management device sends a data stream connection establishment request message to the second network management device. The data stream connection establishment request message may use an existing operation, such as the establishstreamingconnection operation, or a newly defined operation, which is not limited in this application.

[0221] 1220. The second network management device establishes a data stream connection with the first network management device according to the data stream connection establishment request message.

[0222] 1230. The second network management device sends a data stream connection establishment success response message to the first network management device. The data stream connection establishment success response message is used to indicate the status of establishing the data stream connection between the first network management device and the second network management device, such as successful establishment or establishment failure.

[0223] 1240. The first network management device obtains performance information of the first IAB node.

[0224] 1250. The first network management device sends a report flow data operation message to the second network management device through the data flow connection. The report flow data operation message includes the performance information flow of the first IAB node.

[0225] It should be noted that the performance information flow of the first IAB node can be indicated by using a stream identifier (streamID) or other identification information.

[0226] Optionally, the report flow data operation message further includes an identifier of an IAB node, which is used by the second network management device to identify performance information of the first IAB node.

[0227] It should be understood that the report stream data message may use an existing operation, such as a reportstreamdata operation, or a newly defined operation, which is not limited in this application.

[0228] Optionally, the first network management device may also add, update or modify the performance data reporting flow information of the IAB node by performing an addstreaminfo operation, an updatestreaminfo operation or a deletestreaminfo operation, for example. Optionally, the adding, updating or modifying operation may carry an identifier of the IAB node to be added, updated or modified.

[0229] Optionally, before the first network management device sends the establishment data stream connection indication information to the second network management device, the second network management device may also send a create measurement job operation to the first network management device to instruct the first network management device to create a performance measurement job. For example, the create measurement job operation can be performed through the existing operation createMeasurementjob, or through a newly defined operation, which is not limited in this application. It should be noted that the operation object included in the create measurement job operation can be a core network entity, such as AMF, UPF. Optionally, for an architecture in which the IAB node is directly transmitted to the network management device through an IP backhaul link, the object of the subscription operation can also be an IAB node.

[0230] Optionally, if the first network management device no longer obtains performance information about the first IAB node, or if acquisition is complete, the first network management device may also send a terminate streaming connection indication message to the second network management device. After receiving the terminate streaming connection indication message sent by the first network management device, the second network management device may terminate the data stream connection with the first network management device. 830. The second network management device receives network node management data from the first network management device, where the network node management data includes management data of the first integrated access and backhaul IAB node, wherein the management data includes fault information and / or performance information.

[0231] In the technical solution provided in the embodiment of the present application, the first network management device can obtain the fault information and / or performance information of the network node, and send the fault information and / or performance information of the network node to the second network management device, which can ensure the execution of the first IAB node service, thereby improving the user experience.

[0232] The embodiment of the present application proposes a communication device 1300, such as Figure 13 FIG2 shows a schematic block diagram of a communication device 1300 according to an embodiment of the present application. The device can be applied to a first network management device, which can be a management service producer, a wireless automation engine MAE, or an element management system EMS.

[0233] The apparatus 1300 includes: a transceiver unit 1310, the transceiver unit 1310 being configured to receive network node information sent by a second network management device, the network node information including information of a first access and backhaul integrated IAB node;

[0234] The processing unit 1320 is configured to configure information of the network node.

[0235] Optionally, the transceiver unit 1310 is further configured to send the information of the first IAB node to the network node.

[0236] Optionally, the information of the first IAB node is capability information of the first IAB node.

[0237] Optionally, the transceiver unit 1310 is further configured to send the information of the first IAB node to the network node, so that the network node sends the information of the first IAB node to the first IAB node.

[0238] Optionally, the network node sends the information of the first IAB node to the first IAB node, including: the network node sends the information of the first IAB node through a transmission link between the network node and the first IAB node, and the transmission connection is provided by a protocol data unit PDU session of the first IAB node.

[0239] Optionally, the transceiver unit 1310 is further configured to send first information to the second network management device, where the first information is used to obtain information of the first IAB node.

[0240] Optionally, the information of the first IAB node includes at least one of the following: the identifier of the first IAB node, the length of the identifier of the first IAB node, the name of the first IAB node, the identifier of the public land mobile network PLMN of the first IAB node, the cell local identifier of the first IAB node, the physical cell identifier of the first IAB node, the absolute radio frequency channel number ARFCN of the first IAB node, the cell search synchronization signal SSB of the first IAB node, the bandwidth part BWP of the first IAB node, the cell status of the first IAB node, the management status of the first IAB node, the Internet Protocol IP address of the first IAB node, the IP address of the host node of the first IAB node, or the identifier of the host node of the first IAB node.

[0241] Optionally, the second network management device may be a management service consumer or a network management system NMS.

[0242] The embodiment of the present application proposes a communication device 1400, such as Figure 14 FIG2 shows a schematic block diagram of another communication device 1400 according to an embodiment of the present application. The device can be applied to a second network management device, which can be a management service consumer or a network management system NMS.

[0243] Apparatus 1400 includes a processing unit 1410 and a transceiver unit 1420. Processing unit 1410 is configured to determine network node information, including information about a first integrated access and backhaul (IAB) node; and transceiver unit 1420 is configured to send the network node information to a first network management device. Optionally, transceiver unit 1420 is further configured to receive first information sent by the first network management device, the first information being used to obtain information about the first IAB node. Optionally, the first network management device may be a managed service producer, a wireless automation engine (MAE), or an element management system (EMS).

[0244] The embodiment of the present application proposes a communication device 1500, such as Figure 15 FIG2 shows a schematic block diagram of another communication device 1500 according to an embodiment of the present application. The device can be applied to a first network management device.

[0245] The device 1500 includes: an acquisition unit 1510 and a transceiver unit 1520, the acquisition unit 1510 is used to acquire management data of a network node, the management data of the network node including management data of a first integrated access and backhaul IAB node; the transceiver unit 1520 is used to send the management data of the network node to a second network management device, wherein the management data includes fault information and / or performance information.

[0246] Optionally, the transceiver unit 1520 is further configured to receive a subscription request message from a second network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first IAB node.

[0247] Optionally, the transceiver unit 1520 is specifically configured to send the fault information and / or performance information of the network node to the second network management device via a data stream connection.

[0248] Optionally, the transceiver unit 1520 is further configured to send a data stream connection establishment request message to the second network management device;

[0249] The transceiver unit 1520 is further configured to receive a data stream connection establishment success response message sent by the second network management device.

[0250] Optionally, the transceiver unit 1520 is further configured to send data stream connection interruption indication information to the second network management device.

[0251] Optionally, the second indication information may include an identifier of the first IAB node.

[0252] The embodiment of the present application proposes a communication device 1600, such as Figure 16FIG2 shows a schematic block diagram of another communication device 1600 according to an embodiment of the present application. The device can be applied to a second network management device.

[0253] The apparatus 1600 includes: a transceiver unit 1610 and a processing unit 1620, configured to receive network node management data sent by a first network management device, wherein the network node management data includes management data of a first integrated access and backhaul IAB node, and the management data includes fault information and / or performance information.

[0254] Optionally, the transceiver unit 1610 is further configured to send a subscription request message to the first network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first IAB node.

[0255] Optionally, the transceiver unit 1610 is also used to receive a data stream connection establishment request message sent by the first network management device, and the data stream connection establishment request message is used to obtain performance information of the first IAB node; the processing unit 1620 is used to establish a data stream connection with the first network management device according to the data stream connection establishment request message; the transceiver unit 1610 is also used to send a data stream connection establishment success response message to the first network management device through the data stream connection, and the data stream connection establishment success response message is used to indicate that a data stream connection has been established between the first network management device and the second network management device.

[0256] Optionally, the transceiver unit 1610 is specifically configured to receive the performance information of the network node sent by the first network management device through the data stream connection.

[0257] Optionally, the transceiver unit 1610 is further configured to receive data stream connection interruption indication information sent by the first network management device; and interrupt the data stream connection with the first network management device according to the data stream connection interruption indication information.

[0258] Optionally, the second indication information may include an identifier of the first IAB node.

[0259] Another communication device schematic diagram provided in an embodiment of the present application is used to implement the operation of the first network management device or the second network management device in the above embodiment. Figure 17 As shown, the communication device includes: a processor 1710 and an interface 1730. Optionally, the communication device also includes a memory 1720. The interface 1730 is used to implement communication with other devices.

[0260] The method performed by the first network management device or the second network management device in the above embodiment can be implemented by the processor 1710 calling a program stored in a memory (which can be the memory 920 in the first network management device or the second network management device, or an external memory). That is, the apparatus for the first network management device or the second network management device may include a processor 1710, which executes the method performed by the first network management device or the second network management device in the above method embodiment by calling the program in the memory. The processor here can be an integrated circuit with signal processing capabilities, such as a CPU. The apparatus for the first network management device or the second network management device can be implemented by one or more integrated circuits configured to implement the above method. For example: one or more ASICs, or one or more microprocessors DSPs, or one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Alternatively, the above implementation methods can be combined.

[0261] Specifically, Figures 13 to 16 The functions / implementation processes of the transceiver unit, processing unit and acquisition unit can be achieved through Figure 17 The processor 1710 in the communication device shown calls the computer executable instructions stored in the memory 1720 to implement. Alternatively, Figures 13 to 16 The functions / implementation of the processing unit and the acquisition unit in Figure 17 The processor 1710 in the communication device shown calls the computer execution instructions stored in the memory 1720 to implement, Figures 13 to 16 The function / implementation process of the transceiver unit in Figure 17 The interface 1730 in the communication device shown in FIG. 1 is implemented.

[0262] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0263] The various illustrative logic units and circuits described in the embodiments of the present application can be implemented or operated by a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or the design of any combination thereof. The general-purpose processor can be a microprocessor, alternatively, the general-purpose processor can also be any traditional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration to implement.

[0264] The steps of the method or algorithm described in the embodiments of the present application can be directly embedded in the software unit executed by the hardware, processor, or a combination of the two. The software unit can be stored in a random access memory (RAM), flash memory, read-only memory (ROM), EPROM memory, EEPROM memory, register, hard disk, removable disk, CD-ROM or other storage medium in any form in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Alternatively, the storage medium can also be integrated into the processor. The processor and storage medium can be arranged in an ASIC.

[0265] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0266] In one or more exemplary designs, the above-described functions described herein may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, these functions may be stored on a computer-readable medium or transmitted in the form of one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media that facilitate the transfer of computer programs from one location to another. Storage media can be any available medium that can be accessed by a general-purpose or specialized computer. For example, such computer-readable media may include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store program code in the form of instructions or data structures and other forms that can be read by a general-purpose or specialized computer, or a general-purpose or specialized processor. In addition, any connection can be appropriately defined as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote resource via a coaxial cable, fiber optic cable, twisted pair cable, digital subscriber line (DSL), or wirelessly, such as infrared, wireless, and microwave, it is also included in the definition of computer-readable media. Disks and discs include compact disks, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. Disks typically reproduce data magnetically, while discs typically reproduce data optically using lasers. Combinations of these may also be included in computer-readable media.

[0267] Those skilled in the art will appreciate that, in one or more of the examples above, the functions described herein may be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0268] It should be understood that the memory may be integrated into the processor, or the processor and memory may be integrated on the same chip, or may be located on different chips and connected via an interface coupling. This embodiment of the present application does not limit this.

[0269] The present application also provides a computer-readable storage medium storing a computer program for implementing the method in the above method embodiment. When the computer program is executed on a computer, the computer can implement the method in the above method embodiment.

[0270] In addition, the term "and / or" in this application is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; the term "at least one" in this application can mean "one" and "two or more". For example, at least one of A, B and C can represent seven situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, A and C exist at the same time, C and B exist at the same time, and A, B and C exist at the same time.

[0271] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0272] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0273] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0274] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0275] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0276] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0277] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for information transmission, characterized in that: include: The first network management device receives information about a network node from the second network management device, where the network node is a core network node or a base station node, and the information about the network node includes information about the first integrated access and backhaul IAB node; The first network management device configures information of the network node, The information of the network node configured by the first network management device includes: The first network management device configures the information of the first IAB node in the management object of the network node.

2. The method according to claim 1, characterized in that The method further comprises: The first network management device sends the information of the first IAB node to the network node.

3. The method according to claim 1, characterized in that The information of the first IAB node is capability information of the first IAB node.

4. The method according to claim 1, wherein The capability information of the first IAB node indicates whether the network node supports access of the first IAB node.

5. The method according to claim 1, wherein The method further comprises: The first network management device sends the information of the first IAB node to the network node, and the network node is configured to send the information of the first IAB node to the first IAB node.

6. The method according to claim 4, characterized in that The network node sending the information of the first IAB node to the first IAB node includes: The network node sends the information of the first IAB node through a transmission connection between the network node and the first IAB node, where the transmission connection is provided by a protocol data unit (PDU) session of the first IAB node.

7. The method according to claim 5 or 6, characterized in that The information of the first IAB node includes at least one of the following: The identifier of the first IAB node, the length of the identifier of the first IAB node, the name of the first IAB node, the identifier of the public land mobile network PLMN to which the first IAB node belongs, the cell identifier of the first IAB node, the absolute radio frequency channel number ARFCN of the first IAB node, the cell search synchronization signal SSB of the first IAB node, the bandwidth part BWP of the first IAB node, the cell status of the first IAB node, the management status of the first IAB node, the Internet Protocol IP address of the first IAB node, the IP address of the host node of the first IAB node, or the identifier of the host node of the first IAB node.

8. The method according to any one of claims 1 to 6, characterized in that The method further comprises: The first network management device sends first information to the second network management device, where the first information is used to obtain information about the first IAB node.

9. The method according to claim 8, characterized in that The first information includes at least one of the following: The identifier of the first IAB node, indication information of the first IAB node, or configuration request indication information of the first IAB node.

10. The method according to any one of claims 1 to 6, characterized in that The first network management device is a management service producer, a wireless automation engine MAE or an element management system EMS; The second network management device is a management service consumer or a network management system NMS.

11. The method according to any one of claims 1 to 6, characterized in that Also includes: The first network management device obtains management data of the network node, where the management data of the network node includes management data of the first IAB node; The first network management device sends the management data of the network node to the second network management device, wherein the management data includes fault information and / or performance information.

12. The method according to claim 11, characterized in that The method further comprises: The first network management device receives a subscription request message from the second network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first IAB node.

13. The method according to claim 11, characterized in that The first network management device sending the management data of the network node to the second network management device includes: The first network management device sends the management data of the network node to the second network management device through a data stream connection.

14. The method according to claim 13, characterized in that Before the first network management device obtains the management data of the network node, the method further includes: The first network management device sends a data stream connection establishment request message to the second network management device; The first network management device receives a data stream connection establishment success response message sent by the second network management device.

15. The method according to claim 13 or 14, characterized in that The method further comprises: The first network management device sends data flow connection interruption indication information to the second network management device.

16. The method according to claim 12, characterized in that The second indication information includes an identifier of the first IAB node.

17. The method according to claim 11, characterized in that The first network management device is a management service producer, a wireless automation engine MAE or an element management system EMS; The second network management device is a management service consumer or a network management system NMS.

18. A communication system, characterized in that: comprising a first network management device and a second network management device, The first network management device is used to execute the method according to any one of claims 1 to 17, The second network management device is used to send the information of the network node to the first network management device.

19. The communication system according to claim 18, wherein: The second network management device is further configured to determine information about a network node, wherein the information about the network node includes information about the first integrated access and backhaul IAB node.

20. The communication system according to claim 18 or 19, characterized in that The second network management device is further configured to receive first information sent by the first network management device, where the first information is used to obtain information about the first IAB node.

21. The communication system according to claim 18, wherein: The second network management device is further configured to receive management data of the network node sent by the first network management device, wherein the management data includes fault information and / or performance information.

22. The communication system according to claim 21, wherein: The second network management device is further configured to send a subscription request message to the first network management device, wherein the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first integrated access and backhaul IAB node.

23. The communication system according to claim 21, wherein: The second network management device is further configured to: Receive a data stream connection establishment request message sent by the first network management device, establish a data stream connection with the first network management device according to the data stream connection establishment request message, and send a data stream connection establishment success response message to the first network management device through the data stream connection.

24. The communication system according to claim 23, wherein: The second network management device is specifically configured to: Receive the performance information of the network node sent by the first network management device through the data stream connection.

25. A communication device, characterized in that: Comprising means for performing the method according to any one of claims 1 to 17.

26. A method for information transmission, characterized in that: include: The method according to any one of claims 1 to 17, and The second network management device sends the information of the network node to the first network management device.

27. The method according to claim 26, characterized in that Also includes: The second network management device determines information of a network node, where the information of the network node includes information of a first integrated access and backhaul IAB node.

28. The method according to claim 26 or 27, characterized in that Also includes: The second network management device receives first information sent by the first network management device, where the first information is used to obtain information about the first IAB node.

29. The method according to claim 26, wherein Also includes: The second network management device receives management data of the network node sent by the first network management device, wherein the management data includes fault information and / or performance information.

30. The method according to claim 29, wherein Also includes: The second network management device sends a subscription request message to the first network management device, where the subscription request message includes second indication information, and the second indication information is used to obtain management data of the first integrated access and backhaul IAB node.

31. The method according to claim 29, wherein Also includes: The second network management device receives the data stream connection establishment request message sent by the first network management device, establishes a data stream connection between itself and the first network management device according to the data stream connection establishment request message, and sends a data stream connection establishment success response message to the first network management device through the data stream connection.

32. The method according to claim 31, wherein The second network management device receiving the management data of the network node sent by the first network management device includes: The second network management device receives the performance information of the network node sent by the first network management device through the data stream connection.

33. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program; when the computer program is executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 17.

34. A computer program product, characterized in that The computer program product comprises one or more computer instructions, which, when loaded and executed on a computer, cause the method according to any one of claims 1 to 17 to be performed.

35. A communication device, characterized in that: include: A processor, a memory and an interface, wherein the memory is used to store computer codes or instructions, the interface is used for communication, and the processor is used to call and execute the computer codes or instructions in the memory to implement the method according to any one of claims 1 to 17.

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