Capability reporting, acquisition methods, IP address request methods and IAB nodes

Abstract

The present application discloses a capability reporting and acquisition method, an IP address request method and an IAB node, the capability reporting method comprising: sending a first message to a centralized unit CU of an IAB host node; wherein the first message is used to indicate the type of the IAB‑MT, and / or the first message includes a first information field for indicating the minimum capability set supported by the IAB‑MT; in an embodiment of the present invention, the type of the IAB‑MT is indicated by the first message, so that the CU of the IAB host node can distinguish the type of the IAB‑MT, thereby accurately knowing the capabilities of the IAB node and effectively controlling the IAB node; or, by including the first information field in the first message to indicate the minimum capability set supported by the IAB‑MT, the capabilities of the IAB node can be directly indicated and the IAB node can be effectively controlled.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a capability reporting and acquisition method, an IP address request method and an IAB node. Background Art

[0002] In the Integrated Access Backhaul (IAB) system, an IAB node includes a distributed unit (DU) functional part and a mobile terminal (MT) functional part. Relying on MT, an access point (i.e., IAB node) can find an upstream access point (parent IAB node) and establish a wireless connection based on the DU of the upstream access point. This wireless connection is called a backhaul link. After an IAB node establishes a complete backhaul link, the IAB node turns on its DU function, and the DU will provide cell services, that is, the DU can provide access services to the terminal. A backhaul loop contains an IAB host (IAB-donor) node, and the IAB-donor node has a wired transmission network directly connected to the core network.

[0003] When accessing the network, IAB-MT can be regarded as an ordinary terminal. It first initiates initial access, and then sends a radio resource control setup completion (RRCSetupComplete) message to the centralized unit (CU) of the IAB node. The message carries the IAB node indication field and sets its value to true, indicating that it is an IAB node to the CU of the IAB node. Then, the IAB-DU is set up to establish an F1 signaling connection.

[0004] Currently, two types of IAB-MT are defined, namely wide-area and local-area. Generally speaking, wide-area IAB-MT can be equipped in IAB nodes that provide large coverage. The coverage of IAB nodes is comparable to that of macro base stations, and the coverage is larger; local-area IAB-MT can be equipped in IAB nodes that provide smaller coverage. The coverage of IAB nodes is analogous to that of micro / pico base stations. The functions and characteristics of wide-area IAB-MT are known to operators, and its deployment scenarios are usually fixed and well-planned (operators are very familiar with the current geographical environment characteristics). As for local-area IAB-MT, it is usually deployed in some places with harsh environments or places that are unknown to operators in advance.

[0005] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art:

[0006] After accessing the IAB network, the current IAB node can indicate its own IAB node identity through the IAB node indication field in the RRC setup completion message, but the CU of the IAB host node cannot accurately know the capabilities of the accessed IAB node and cannot effectively control the IAB node. Summary of the invention

[0007] The purpose of the embodiments of the present application is to provide a capability reporting and acquisition method, an IP address request method and an IAB node, which can solve the problem that the CU of the IAB host node cannot accurately know the capabilities of each IAB node and cannot effectively control the IAB node.

[0008] In order to solve the above technical problems, this application is implemented as follows:

[0009] In a first aspect, an embodiment of the present application provides a capability reporting method, which is applied to a self-backhaul IAB node, where the IAB node includes an IAB-MT, including:

[0010] Sending a first message to a centralized unit CU of the IAB host node;

[0011] The first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0012] In a second aspect, an embodiment of the present application provides a capability acquisition method, which is applied to a self-backhauled IAB host node, including:

[0013] receiving a first message sent by the IAB node;

[0014] The first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0015] In a third aspect, an embodiment of the present application provides an IP address request method, which is applied to a self-backhaul IAB node, including:

[0016] Send an IP address request message to the centralized unit CU of the IAB host node and start an IP request prohibition timer;

[0017] Wherein, during the running of the IP request prohibition timer, the IAB node is prohibited from sending an IP address request message.

[0018] In a fourth aspect, an embodiment of the present application provides a capability reporting device, which is applied to a self-backhaul IAB node, where the IAB node includes an IAB-MT, including:

[0019] A first sending module, configured to send a first message to a centralized unit CU of an IAB host node;

[0020] The first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0021] In a fifth aspect, an embodiment of the present application further provides a capability acquisition device, which is applied to a self-backhaul IAB host node, including:

[0022] A receiving module, configured to receive a first message sent by an IAB node;

[0023] The first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0024] In a sixth aspect, an embodiment of the present application further provides an IP address request device, which is applied to a self-backhaul IAB node, including:

[0025] A second sending module is used to send an IP address request message to a centralized unit CU of the IAB host node;

[0026] Enable module to enable IP request prohibition timer;

[0027] Wherein, during the running of the IP request prohibition timer, the IAB node is prohibited from sending an IP address request message.

[0028] In the seventh aspect, an embodiment of the present application provides a self-backhaul IAB node, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect, the second aspect, or the third aspect are implemented.

[0029] In an eighth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect, the second aspect, or the third aspect are implemented.

[0030] In the ninth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect, the second aspect, or the third aspect.

[0031] In an embodiment of the present application, the type of IAB-MT is indicated by the first message, so that the CU of the IAB host node can distinguish the type of IAB-MT, so that the capabilities of the IAB node can be accurately known and the IAB node can be effectively controlled; or, the first message includes a first information field to indicate the minimum capability set supported by the IAB-MT, so that the capabilities of the IAB node can be directly indicated and the IAB node can be effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram showing the steps of the capability reporting method provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram showing the steps of the capability acquisition method provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram showing an interaction of Example 1 provided in an embodiment of the present invention;

[0035] Figure 4 A schematic diagram showing the steps of the IP address request method provided by an embodiment of the present invention;

[0036] Figure 5 A schematic diagram showing an interaction of Example 2 provided in an embodiment of the present invention;

[0037] Figure 6 A schematic diagram showing an interaction of Example 3 provided in an embodiment of the present invention;

[0038] Figure 7 A schematic diagram showing the structure of a capability reporting device provided by an embodiment of the present invention;

[0039] Figure 8 A schematic diagram showing the structure of a capability acquisition device provided in an embodiment of the present application;

[0040] Fig. 9 A schematic diagram showing the structure of an IP address request device provided by an embodiment of the present invention;

[0041] Fig.10 A schematic diagram showing the structure of an IAB node provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0044] The following is an introduction to the embodiments of the present application in conjunction with the accompanying drawings. The capability reporting, acquisition method, IP address request method and IAB node provided in the embodiments of the present application can be applied to a wireless communication system. The wireless communication system may be a 5G system, or a Long Term Evolution (LTE) system, or an evolved Long Term Evolution (eLTE) system, or a subsequent evolution communication system. In the embodiments of the present application, LTE and NR systems are taken as examples, but are not limited to this system. The technical solution provided in the present application can be applied to other systems with the same problem.

[0045] In the following, in conjunction with the accompanying drawings, the capability reporting, acquisition method, IP address request method and IAB node provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0046] like Figure 1 As shown, an embodiment of the present application provides a capability reporting method, which is applied to a self-backhaul IAB node, where the IAB node includes an IAB-MT, including:

[0047] Step 101: Send a first message to a centralized unit CU of an IAB host node; wherein the first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field for indicating a minimum capability set supported by the IAB-MT.

[0048] The types of IAB-MT include wide-area type and local-area type.

[0049] Optionally, when the first message includes the first information field, multiple minimum capability sets need to be predefined, and the first information field indicates the serial number of a certain minimum capability set, and the minimum capability set corresponding to the serial number indicated by the first information field is the minimum capability set supported by the IAB-MT. In this case, the type of IAB-MT may not be distinguished, and the minimum capability set supported by the IAB-MT may be directly indicated through the first information field, so that the capabilities of the IAB node can be directly indicated and the IAB node can be effectively controlled.

[0050] Optionally, the first information field is in integer format, and the integer indicates the minimum capability set supported by the MT of the IAB node; wherein the integer indicates the serial number of a minimum capability set among multiple minimum capability sets. For example, the first information field is integer{1,2,…,max_minimum_set}, wherein max_minimum_set indicates the number of all minimum capability sets.

[0051] As an optional embodiment of the present application, if the first message is used to indicate the type of the IAB-MT, the first message is also used to indicate at least one of the following:

[0052] A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message;

[0053] Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

[0054] For example, if the first message indicates that the type of the IAB-MT is a wide-area type, the first message is also used to indicate the minimum capability set supported by the wide-area type IAB-MT, and / or whether the wide-area type IAB-MT has other capabilities to report in addition to the minimum capability set it supports.

[0055] For another example, the first message indicates that the type of the IAB-MT is a local-area type. The first message is also used to indicate the minimum capability set supported by the local-area type IAB-MT, and / or whether the local-area type IAB-MT has other capabilities to report in addition to the minimum capability set it supports.

[0056] It should be noted that in the embodiment of the present application, the capability information of the IAB-MT mainly includes two categories, namely:

[0057] a) Minimum capability set: This part is the most basic function and must be supported by all terminals.

[0058] b) Other capabilities in addition to the minimum set of capabilities it supports; this capability requires the terminal to be selected before a certain time point. Before this time, if the terminal does not support a certain function, the corresponding capability bit can be set to 0; or, for optional functions, if supported, it is set to 1, and if not supported, it is set to 0.

[0059] As another optional embodiment of the present application, the first message is a radio resource control RRC message. The RRC message may be a new RRC message or an enhancement of an existing RRC message. When the RRC message is an existing RRC message, the RRC message may be any one of the following:

[0060] RRC Setup Complete (RRCSetupComplete) message;

[0061] Terminal information response (UEInformationResponse) message;

[0062] RRC reconfiguration complete (RRCReconfigurationComplete) message.

[0063] As another optional embodiment of the present application, the type of the IAB-MT is indicated by the value of the second information field in the first message; wherein, when the type of the IAB-MT is indicated by the value of the second information field in the first message, the second information field is in an enumerated format, and the type of the IAB-MT is indicated by enumerated.

[0064] For example, the second information field may be identified by 2 bits, such as enumerated{local-area,wide-area}, or enumerated{local-area}, or enumerated{wide-area}. The type of the current IAB-MT is indicated by selecting a value.

[0065] Alternatively, as another optional embodiment of the present application, the type of the IAB-MT is indicated in the first message by whether a third information field exists;

[0066] For example, the third information field may be identified by 1 bit, such as enumerated{true}; when the third information field exists (it can only be true), it indicates that the type of IAB-MT is wide-area or local-area.

[0067] Alternatively, as another optional embodiment of the present application, when the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

[0068] For another example, a new fourth information field is introduced. When the IAB node indication field (indicating that the node is an IAB node) appears in the first message, if the fourth information field exists, it indicates that the type of IAB-MT is the first type (wide-area or local-area); if the fourth information field does not exist, it indicates that the type of IAB-MT is the second type (local-area or wide-area).

[0069] As another optional embodiment of the present application, when the first message includes an IAB node indication field, the IAB node indication field is set to a selected format;

[0070] The type of the IAB-MT is indicated by the value of the IAB node indication field.

[0071] In other words, the embodiment of the present application modifies the IAB node indication field, changes the enumerated format of the IAB node indication field to a selection format, and the IAB node selects the value represented by the corresponding type to report; the IAB node indication field directly indicates the type of IAB-MT and implicitly indicates that the node is an IAB node.

[0072] In summary, in an embodiment of the present application, the type of IAB-MT is indicated by the first message, so that the CU of the IAB host node can distinguish the type of IAB-MT, so that it can accurately know the capabilities of the IAB node and effectively control the IAB node; or, the first message includes a first information field to indicate the minimum capability set supported by the IAB-MT, so that it is possible to directly indicate the capabilities of the IAB node and effectively control the IAB node.

[0073] like Figure 2 As shown, the embodiment of the present application also provides a capability acquisition method, which is applied to a self-backhaul IAB host node, including:

[0074] Step 201: Receive a first message sent by an IAB node; wherein the first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0075] The types of IAB-MT include wide-area type and local-area type.

[0076] Optionally, when the first message includes the first information field, multiple minimum capability sets need to be predefined, and the first information field indicates the serial number of a certain minimum capability set, and the minimum capability set corresponding to the serial number indicated by the first information field is the minimum capability set supported by the IAB-MT. In this case, the type of IAB-MT may not be distinguished, and the minimum capability set supported by the IAB-MT may be directly indicated through the first information field, so that the capabilities of the IAB node can be directly indicated and the IAB node can be effectively controlled.

[0077] Optionally, the first information field is in integer format, and the integer indicates the minimum capability set supported by the MT of the IAB node; wherein the integer indicates the serial number of a minimum capability set among multiple minimum capability sets. For example, the first information field is integer{1,2,…,max_minimum_set}, wherein max_minimum_set indicates the number of all minimum capability sets.

[0078] As an optional embodiment of the present application, if the first message is used to indicate the type of the IAB-MT, the first message is also used to indicate at least one of the following:

[0079] A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message;

[0080] Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

[0081] For example, if the first message indicates that the type of the IAB-MT is a wide-area type, the first message is also used to indicate the minimum capability set supported by the wide-area type IAB-MT, and / or whether the wide-area type IAB-MT has other capabilities to report in addition to the minimum capability set it supports.

[0082] For another example, the first message indicates that the type of the IAB-MT is a local-area type. The first message is also used to indicate the minimum capability set supported by the local-area type IAB-MT, and / or whether the local-area type IAB-MT has other capabilities to report in addition to the minimum capability set it supports.

[0083] It should be noted that in the embodiment of the present application, the capability information of the IAB-MT mainly includes two categories, namely:

[0084] a) Minimum capability set: This part is the most basic function and must be supported by all terminals.

[0085] b) Other capabilities in addition to the minimum set of capabilities it supports; this capability requires the terminal to be selected before a certain time point. Before this time, if the terminal does not support a certain function, the corresponding capability bit can be set to 0; or, for optional functions, if supported, it is set to 1, and if not supported, it is set to 0.

[0086] As another optional embodiment of the present application, the first message is a radio resource control RRC message. The RRC message may be a new RRC message or an enhancement of an existing RRC message. When the RRC message is an existing RRC message, the RRC message may be any one of the following:

[0087] RRC Setup Complete (RRCSetupComplete) message;

[0088] Terminal information response (UEInformationResponse) message;

[0089] RRC reconfiguration complete (RRCReconfigurationComplete) message.

[0090] As another optional embodiment of the present application, the type of the IAB-MT is indicated by the value of the second information field in the first message; wherein, when the type of the IAB-MT is indicated by the value of the second information field in the first message, the second information field is in an enumerated format, and the type of the IAB-MT is indicated by enumerated.

[0091] For example, the second information field may be identified by 2 bits, such as enumerated{local-area,wide-area}, or enumerated{local-area}, or enumerated{wide-area}. The type of the current IAB-MT is indicated by selecting a value.

[0092] Alternatively, as another optional embodiment of the present application, the type of the IAB-MT is indicated in the first message by whether a third information field exists;

[0093] For example, the third information field may be identified by 1 bit, such as enumerated{true}; when the third information field exists (it can only be true), it indicates that the type of IAB-MT is wide-area or local-area.

[0094] Alternatively, as another optional embodiment of the present application, when the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

[0095] For another example, a new fourth information field is introduced. When the IAB node indication field (indicating that the node is an IAB node) appears in the first message, if the fourth information field exists, it indicates that the type of IAB-MT is the first type (wide-area or local-area); if the fourth information field does not exist, it indicates that the type of IAB-MT is the second type (local-area or wide-area).

[0096] As another optional embodiment of the present application, when the first message includes an IAB node indication field, the IAB node indication field is set to a selected format;

[0097] The type of the IAB-MT is indicated by the value of the IAB node indication field.

[0098] In other words, the embodiment of the present application modifies the IAB node indication field, changes the enumerated format of the IAB node indication field to a selection format, and the IAB node selects the value represented by the corresponding type to report; the IAB node indication field directly indicates the type of IAB-MT and implicitly indicates that the node is an IAB node.

[0099] In summary, in an embodiment of the present application, the type of IAB-MT is indicated by the first message, so that the CU of the IAB host node can distinguish the type of IAB-MT, so that it can accurately know the capabilities of the IAB node and effectively control the IAB node; or, the first message includes a first information field to indicate the minimum capability set supported by the IAB-MT, so that it is possible to directly indicate the capabilities of the IAB node and effectively control the IAB node.

[0100] In order to more clearly describe the capability reporting method and capability acquisition method provided in the embodiments of the present application, an example is provided below for illustration.

[0101] Example 1

[0102] like Figure 3 As shown in the figure, the capability interaction process includes:

[0103] Step 31, a new IAB node starts to access the network. First, the IAB-MT sends an RRC setup request message to the IAB-donor-CU (CU of the IAB donor node);

[0104] Step 32, IAB-donor-CU replies an RRC setup message to IAB-MT;

[0105] Step 33: After receiving the message, IAB-MT replies to IAB-donor-CU with an RRC setup completion message.

[0106] a) The message carries an IAB node indication field (set to true), indicating that the newly connected device is an IAB node;

[0107] b) In addition, the RRC setup complete message also carries a new domain (such as an IAB type indication domain); or an extension of an existing domain, such as an extension of an IAB node indication domain;

[0108] This field can be represented by 2 bits, such as enumerated{local-area,wide-area}, or enumerated{local-area}, or enumerated{wide-area}. The current IAB-MT type is indicated by selecting the value; or, the format of this field can be represented by 1 bit, such as enumerated{true}; when this indicator exists (it can only be true), it indicates that IAB-MT is wide-area or local-area.

[0109] Step 34, assuming that the current message indicates that the IAB node is a local-area IAB-MT, it means that there are additional capabilities that need to be reported through the UE's capability signalling procedure. After the network learns that the node is a local-area IAB, it can initiate a capability request message to the IAB when necessary.

[0110] Step 35: After receiving the capability request information, the IAB returns other capabilities except the minimum capability set through the terminal capability information.

[0111] It should be noted that after accessing the network, the IAB node needs to obtain the IP address assigned by the network side to make F1 signaling-related connections. When the IAB node obtains the IP address through the IAB-donor-CU method, it needs to send an IP address request message to the IAB-donor-CU to request one or more IP addresses. That is, after the IAB-MT is set up, the IAB can send IP address request information to the CU of the IAB node, which may be triggered frequently, thereby increasing resource overhead.

[0112] like Figure 4As shown, the embodiment of the present application also provides an IP address request method, which is applied to a self-backhaul IAB node, including:

[0113] Step 401, sending an IP address request message to a centralized unit CU (IAB-donor-CU) of an IAB donor node and starting an IP request prohibition timer; wherein, during the operation of the IP request prohibition timer, the IAB node prohibits sending an IP address request message.

[0114] The embodiment of the present application limits the sending conditions of the IP address request message by introducing an IP request prohibition timer, thereby effectively reducing the triggering frequency of the message and saving resources.

[0115] As an optional embodiment, the IP address request message is an RRC message decoupled from the RRC configuration / reconfiguration message; wherein, decoupling means that the IP address request message is not associated with the RRC configuration / reconfiguration message, and the two will not affect each other.

[0116] Alternatively, the IP address request message is enhanced terminal assistance information (UEAssistanceInformation);

[0117] Alternatively, the IP address request message is an RRC reconfiguration complete (RRCReconfigurationComplete) message.

[0118] As an optional embodiment, step 401 includes:

[0119] After the RRC setup completion message in the initialization (integration) phase of the IAB node, sending an IP address request message to the CU of the IAB host node;

[0120] or,

[0121] After the initialization (integration) of the IAB node is completed, an IP address request message is sent to the CU of the IAB host node.

[0122] Optionally, the timing length of the IP request prohibition timer is defined by a protocol or determined by a pre-definition or determined by a network configuration or determined by a network pre-configuration.

[0123] As an optional embodiment, the method further includes:

[0124] After the IP request prohibition timer times out, if the IAB node has a new IP address request requirement, it sends an IP address request message to the CU of the IAB host node and restarts the IP request prohibition timer.

[0125] In order to more clearly describe the IP address request method provided in this embodiment, an example is provided below for illustration.

[0126] Example 2

[0127] like Figure 5 As shown in the figure, the IP address request process includes:

[0128] Step 51, IAB-MT is set up and can send an IP address request message to IAB-donor-CU at any time thereafter;

[0129] Step 52: After the IAB sends the IP address request message to the IAB-donor-CU, the IP request prohibition timer is started.

[0130] a) The value of the IP request prohibit timer is (pre)defined by the protocol or (pre)configured by the network.

[0131] b) During the period when this IP request prohibition timer is running, it is prohibited to send any IP address request message;

[0132] c) After the IP request prohibition timer times out, if the IAB node has a new demand for requesting an IP address, it may send an IP address request message again and restart the IP request prohibition timer.

[0133] Step 53: After receiving the IP address request message, the IAB-donor-CU returns the information required by the IAB through an RRC reconfiguration message.

[0134] In summary, the embodiment of the present application limits the sending conditions of the IP address request message by introducing an IP request prohibition timer, thereby effectively reducing the triggering frequency of the message and saving resources.

[0135] It should be noted that the capability interaction method and the IP address request method provided in the embodiment of the present application can be used in combination, and the combination is explained below with reference to an example.

[0136] Example 3

[0137] like Figure 6 As shown, it includes the following steps:

[0138] Step 61, a new IAB node starts to access the network. First, the IAB-MT sends an RRC setup request message to the IAB-donor-CU (CU of the IAB donor node);

[0139] Step 62, IAB-donor-CU replies an RRC setup message to IAB-MT;

[0140] Step 63, after receiving the message, IAB-MT replies to IAB-donor-CU with an RRC setup completion message;

[0141] a) The message carries an IAB node indication field (set to true), indicating that the newly connected device is an IAB node;

[0142] b) In addition, the RRC setup complete message also carries a new domain (such as an IAB type indication domain); or an extension of an existing domain, such as an extension of an IAB node indication domain;

[0143] This field can be represented by 2 bits, such as enumerated{local-area,wide-area}, or emunerated{local-area}, or emumerated{wide-area}. The current IAB-MT type is indicated by selecting the value; or, the format of this field can be represented by 1 bit, such as enumerated{true}; when this indicator exists (it can only be true), it indicates that IAB-MT is wide-area or local-area.

[0144] Step 64, IAB-MT is set up and can send an IP address request message to IAB-donor-CU at any time thereafter; after the IAB sends the IP address request message to the IAB-donor-CU, the IP request prohibition timer is started.

[0145] a) The value of the IP request prohibit timer is (pre)defined by the protocol or (pre)configured by the network.

[0146] b) During the period when this IP request prohibition timer is running, it is prohibited to send any IP address request message;

[0147] c) After the IP request prohibition timer times out, if the IAB node has a new demand for requesting an IP address, it may send an IP address request message again and restart the IP request prohibition timer.

[0148] Step 65: After receiving the IP address request message, the IAB-donor-CU returns the information required by the IAB through an RRC reconfiguration message.

[0149] In summary, the embodiment of the present application indicates the type of IAB-MT through the first message, so that the CU of the IAB host node can distinguish the type of IAB-MT, so that it can accurately know the capabilities of the IAB node and effectively control the IAB node; or, the first message includes a first information field to indicate the minimum capability set supported by the IAB-MT, so that it can directly indicate the capabilities of the IAB node and effectively control the IAB node; in addition, by introducing an IP request prohibition timer to limit the sending conditions of the IP address request message, the triggering frequency of the message is effectively reduced, saving resources.

[0150] like Figure 7 As shown, the embodiment of the present application further provides a capability reporting device 700, which is applied to a self-backhaul IAB node, and the IAB node includes an IAB-MT, including:

[0151] A first sending module 701 is configured to send a first message to a centralized unit CU of an IAB host node;

[0152] The first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0153] Optionally, in the above embodiment of the present application, if the first message is used to indicate the type of the IAB-MT, the first message is also used to indicate at least one of the following:

[0154] A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message;

[0155] Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

[0156] Optionally, in the above embodiment of the present application, the first message is a radio resource control RRC message.

[0157] Optionally, in the above embodiment of the present application, the RRC message is any one of the following:

[0158] RRC setup complete message;

[0159] Terminal information response message;

[0160] RRC reconfiguration complete message.

[0161] Optionally, in the above embodiment of the present application, the type of the IAB-MT is indicated by a value of the second information field in the first message;

[0162] or,

[0163] In the first message, the type of the IAB-MT is indicated by the presence of a third information field;

[0164] or,

[0165] In the case that the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

[0166] Optionally, in the above embodiment of the present application, when the type of the IAB-MT is indicated by the value of the second information field in the first message, the second information field is in an enumerated format, and the type of the IAB-MT is indicated by enumerated.

[0167] Optionally, in the above embodiment of the present application, the first information field is in an integer format, and the integer indicates the minimum capability set supported by the MT of the IAB node; wherein the integer indicates the sequence number of a minimum capability set among multiple minimum capability sets.

[0168] Optionally, in the above embodiment of the present application, when the first message includes an IAB node indication field, the IAB node indication field is set to a selected format;

[0169] The type of the IAB-MT is indicated by the value of the IAB node indication field.

[0170] The capability reporting device provided in the embodiment of the present application can implement each process implemented by the capability reporting device in the embodiment of the capability reporting method, and will not be described again here to avoid repetition.

[0171] In an embodiment of the present application, the type of IAB-MT is indicated by a first message, so that the CU of the IAB host node can distinguish the type of IAB-MT, thereby accurately knowing the capabilities of the IAB node and effectively controlling the IAB node; or, by including a first information field in the first message to indicate the minimum capability set supported by the IAB-MT, it is possible to directly indicate the capabilities of the IAB node and effectively control the IAB node.

[0172] like Figure 8 As shown, the embodiment of the present application further provides a capability acquisition device 800, which is applied to a self-backhaul IAB host node, including:

[0173] The receiving module 801 is configured to receive a first message sent by an IAB node;

[0174] The first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0175] Optionally, in the above embodiment of the present application, if the first message is used to indicate the type of the IAB-MT, the first message is also used to indicate at least one of the following:

[0176] A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message;

[0177] Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

[0178] Optionally, in the above embodiment of the present application, the first message is a radio resource control RRC message.

[0179] Optionally, in the above embodiment of the present application, the RRC message is any one of the following:

[0180] RRC setup complete message;

[0181] Terminal information response message;

[0182] RRC reconfiguration complete message.

[0183] Optionally, in the above embodiment of the present application, the type of the IAB-MT is indicated by a value of the second information field in the first message;

[0184] or,

[0185] In the first message, the type of the IAB-MT is indicated by the presence of a third information field;

[0186] or,

[0187] In the case that the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

[0188] Optionally, in the above embodiment of the present application, when the type of the IAB-MT is indicated by the value of the second information field in the first message, the second information field is in an enumerated format, and the type of the IAB-MT is indicated by enumerated.

[0189] Optionally, in the above embodiment of the present application, the first information field is in an integer format, and the integer indicates the minimum capability set supported by the MT of the IAB node; wherein the integer indicates the sequence number of a minimum capability set among multiple minimum capability sets.

[0190] Optionally, in the above embodiment of the present application, when the first message includes an IAB node indication field, the IAB node indication field is set to a selected format;

[0191] The type of the IAB-MT is indicated by the value of the IAB node indication field.

[0192] The capability acquisition device provided in the embodiment of the present application can implement each process implemented by the capability acquisition device in the embodiment of the capability acquisition method, and will not be described again here to avoid repetition.

[0193] In an embodiment of the present application, the type of IAB-MT is indicated by a first message, so that the CU of the IAB host node can distinguish the type of IAB-MT, thereby accurately knowing the capabilities of the IAB node and effectively controlling the IAB node; or, by including a first information field in the first message to indicate the minimum capability set supported by the IAB-MT, it is possible to directly indicate the capabilities of the IAB node and effectively control the IAB node.

[0194] like Fig. 9 As shown, the embodiment of the present application further provides an IP address request device 900, which is applied to a self-backhaul IAB node, including:

[0195] The second sending module 901 is used to send an IP address request message to the centralized unit CU of the IAB host node;

[0196] Enable module to enable IP request prohibition timer;

[0197] Wherein, during the running of the IP request prohibition timer, the IAB node is prohibited from sending an IP address request message.

[0198] Optionally, in the above embodiment of the present application, the IP address request message is an RRC message decoupled from the RRC configuration / reconfiguration message;

[0199] Alternatively, the IP address request message is enhanced terminal assistance information;

[0200] Alternatively, the IP address request message is an RRC reconfiguration completion message.

[0201] Optionally, in the above embodiment of the present application, sending an IP address request message to a centralized unit CU of an IAB host node includes:

[0202] After the RRC setup completion message in the initialization phase of the IAB node, sending an IP address request message to the CU of the IAB host node;

[0203] or,

[0204] After the initialization of the IAB node is completed, an IP address request message is sent to the CU of the IAB host node.

[0205] Optionally, in the above embodiments of the present application, the timing length of the IP request prohibition timer is defined by the protocol or predefined or determined by the network configuration or network preconfiguration.

[0206] Optionally, in the above embodiment of the present application, the device further includes:

[0207] A third sending module is configured to send an IP address request message to the CU of the IAB host node if the IAB node has a new IP address request demand after the IP request prohibition timer times out;

[0208] A restart module is used to restart the IP request prohibition timer.

[0209] The IP address request device provided in the embodiment of the present application can implement each process implemented by the IP address request device in the above-mentioned IP address request method embodiment. To avoid repetition, they will not be repeated here.

[0210] The embodiment of the present application limits the sending conditions of the IP address request message by introducing an IP request prohibition timer, thereby effectively reducing the triggering frequency of the message and saving resources.

[0211] The capability reporting device, capability acquisition device and / or IP address request device in the embodiments of the present application may be a device, or a component, integrated circuit, or chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., and the non-mobile electronic device may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiments of the present application.

[0212] The capability reporting device, capability acquisition device and / or IP address request device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0213] Optionally, an embodiment of the present application also provides a self-backhaul IAB node, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned capability reporting method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0214] Optionally, the embodiment of the present application further provides a self-backhaul IAB node, which is an IAB host node, including a processor, a memory, a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, each process of the above-mentioned capability acquisition method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0215] Optionally, an embodiment of the present application also provides a self-backhaul IAB node, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned IP address request method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0216] Fig.10 The hardware structure diagram of an IAB node for implementing each embodiment of the present application is shown in FIG. The IAB node 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010.

[0217] Those skilled in the art will appreciate that the IAB node 1000 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Fig.10 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0218] The radio frequency unit 1001 is used to send a first message to a centralized unit CU of the IAB host node;

[0219] The first message is used to indicate the type of the IAB-MT, and / or the first message includes a first information field used to indicate a minimum capability set supported by the IAB-MT.

[0220] Alternatively, the radio frequency unit 1001 is configured to send an IP address request message to a centralized unit CU of the IAB host node and start an IP request prohibition timer;

[0221] Wherein, during the running of the IP request prohibition timer, the IAB node is prohibited from sending an IP address request message.

[0222] In an embodiment of the present application, the type of IAB-MT is indicated by a first message, so that the CU of the IAB host node can distinguish the type of IAB-MT, thereby accurately knowing the capabilities of the IAB node and effectively controlling the IAB node; or, the first message includes a first information field to indicate the minimum capability set supported by the IAB-MT, so that the capabilities of the IAB node can be directly indicated and the IAB node can be effectively controlled; in addition, the sending conditions of the IP address request message are restricted by introducing an IP request prohibition timer, thereby effectively reducing the triggering frequency of the message and saving resources.

[0223] It should be understood that in the embodiment of the present application, the RF unit 1001 can be used for receiving and sending signals during information transmission or calls. Specifically, after receiving downlink data from the base station, it is sent to the processor 1010 for processing; in addition, uplink data is sent to the base station. Generally, the RF unit 1001 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the RF unit 1001 can also communicate with the network and other devices through a wireless communication system.

[0224] The electronic device provides users with wireless broadband Internet access through the network module 1002, such as helping users to send and receive emails, browse web pages, and access streaming media.

[0225] The audio output unit 1003 can convert the audio data received by the RF unit 1001 or the network module 1002 or stored in the memory 1009 into an audio signal and output it as sound. In addition, the audio output unit 1003 can also provide audio output related to a specific function performed by the IAB node 1000 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 1003 includes a speaker, a buzzer, a receiver, etc.

[0226] The input unit 1004 is used to receive audio or video signals. The input unit 1004 may include a graphics processor (GPU) 10041 and a microphone 10042. The graphics processor 10041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 1006. The image frame processed by the graphics processor 10041 can be stored in the memory 1009 (or other storage medium) or sent via the radio frequency unit 1001 or the network module 1002. The microphone 10042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 1001 in the case of a telephone call mode.

[0227] The IAB node 1000 also includes at least one sensor 1005, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 10061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 10061 and / or the backlight when the IAB node 1000 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), and can detect the magnitude and direction of gravity when stationary, which can be used to identify the posture of electronic devices (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; the sensor 1005 can also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be repeated here.

[0228] The display unit 1006 is used to display information input by the user or information provided to the user. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0229] The user input unit 1007 can be used to receive input digital or character information, and to generate key signal input related to user settings and function control of the electronic device. Specifically, the user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 10071 or near the touch panel 10071 using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 10071 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the coordinates of the contact point, and then sends it to the processor 1010, receives the command sent by the processor 1010 and executes it. In addition, the touch panel 10071 can be implemented in various types such as resistive, capacitive, infrared and surface acoustic waves. In addition to the touch panel 10071, the user input unit 1007 may also include other input devices 10072. Specifically, other input devices 10072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

[0230] Furthermore, the touch panel 10071 may be overlaid on the display panel 10061. When the touch panel 10071 detects a touch operation on or near it, it is transmitted to the processor 1010 to determine the type of touch event. Then, the processor 1010 provides corresponding visual output on the display panel 10061 according to the type of touch event. Fig.10 In the figure, the touch panel 10071 and the display panel 10061 are two independent components to realize the input and output functions of the electronic device. However, in some embodiments, the touch panel 10071 and the display panel 10061 can be integrated to realize the input and output functions of the electronic device, which is not limited here.

[0231] The interface unit 1008 is an interface for connecting an external device to the IAB node 1000. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 1008 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the IAB node 1000 or may be used to transmit data between the IAB node 1000 and an external device.

[0232] The memory 1009 can be used to store software programs and various data. The memory 1009 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 1009 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0233] The processor 1010 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or executing software programs and / or modules stored in the memory 1009 and calling data stored in the memory 1009, it performs various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. The processor 1010 may include one or more processing units; preferably, the processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 1010.

[0234] The IAB node 1000 may also include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system.

[0235] In addition, the IAB node 1000 includes some functional modules not shown, which will not be described in detail here.

[0236] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned capability reporting method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0237] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned capability acquisition method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0238] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned IP address request method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0239] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0240] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned capability reporting method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0241] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned capability acquisition method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0242] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned IP address request method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0243] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0244] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0245] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0246] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0247] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A capability reporting method, applied to a self-backhaul IAB node, the IAB node including an IAB-MT, characterized in that: include: Sending a first message to a centralized unit CU of the IAB host node; The first message is used to indicate the type of the IAB-MT; the type of the IAB-MT includes a wide area type and a local area type; The first message is further used to indicate at least one of the following: A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message; Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

2. The method according to claim 1, characterized in that The first message is a radio resource control RRC message.

3. The method according to claim 2, characterized in that The RRC message is any one of the following: RRC setup complete message; Terminal information response message; RRC reconfiguration complete message.

4. The method according to claim 1, characterized in that: Indicating the type of the IAB-MT by a value of the second information field in the first message; or, In the first message, the type of the IAB-MT is indicated by the presence of a third information field; or, In the case that the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

5. The method according to claim 4, characterized in that In the case where the type of the IAB-MT is indicated by the value of the second information field in the first message, the second information field is in an enumerated format, and the type of the IAB-MT is indicated by enumerated.

6. The method according to claim 1, characterized in that The first information field is in an integer format, and indicates the minimum capability set supported by the MT of the IAB node through the integer; wherein the integer indicates the sequence number of a minimum capability set among multiple minimum capability sets.

7. The method according to claim 1, characterized in that In a case where the first message includes an IAB node indication field, setting the IAB node indication field to a selected format; The type of the IAB-MT is indicated by the value of the IAB node indication field.

8. A capability acquisition method, applied to a self-backhauled IAB host node, characterized in that: include: receiving a first message sent by an IAB node; the IAB node includes an IAB-MT; The first message is used to indicate the type of the IAB-MT; the type of the IAB-MT includes a wide area type and a local area type; The first message is further used to indicate at least one of the following: A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message; Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

9. The method according to claim 8, characterized in that The first message is an RRC message.

10. The method according to claim 9, characterized in that The RRC message is any one of the following: RRC setup complete message; Terminal information response message; RRC reconfiguration complete message.

11. The method according to claim 8, characterized in that Indicating the type of the IAB-MT by a value of the second information field in the first message; or, In the first message, the type of the IAB-MT is indicated by the presence of a third information field; or, In the case that the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

12. The method according to claim 11, characterized in that In the case where the type of the IAB-MT is indicated by the value of the second information field in the first message, the second information field is in an enumerated format, and the type of the IAB-MT is indicated by enumerated.

13. The method according to claim 8, characterized in that The first information field is in an integer format, and indicates the minimum capability set supported by the MT of the IAB node through the integer; wherein the integer indicates the sequence number of a minimum capability set among multiple minimum capability sets.

14. The method according to claim 8, characterized in that In a case where the first message includes an IAB node indication field, setting the IAB node indication field to a selected format; The type of the IAB-MT is indicated by the value of the IAB node indication field.

15. A capability reporting device, applied to a self-backhaul IAB node, the IAB node including an IAB-MT, characterized in that: include: A first sending module, configured to send a first message to a centralized unit CU of an IAB host node; The first message is used to indicate the type of the IAB-MT; the type of the IAB-MT includes a wide area type and a local area type; The first message is further used to indicate at least one of the following: A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message; Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

16. The device according to claim 15, characterized in that Indicating the type of the IAB-MT by a value of the second information field in the first message; or, In the first message, the type of the IAB-MT is indicated by the presence of a third information field; or, In the case that the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

17. A capability acquisition device, applied to a self-backhauled IAB host node, characterized in that: include: A receiving module, configured to receive a first message sent by an IAB node; The IAB node includes an IAB-MT; The first message is used to indicate the type of the IAB-MT; the type of the IAB-MT includes a wide area type and a local area type; The first message is further used to indicate at least one of the following: A minimum capability set supported by the IAB-MT corresponding to the type indicated by the first message; Whether the IAB-MT corresponding to the type indicated by the first message has other capabilities to be reported in addition to the minimum capability set supported by it.

18. The device according to claim 17, characterized in that Indicating the type of the IAB-MT by a value of the second information field in the first message; or, In the first message, the type of the IAB-MT is indicated by the presence of a third information field; or, In the case that the first message includes the IAB node indication field, the type of the IAB-MT is indicated by whether the fourth information field exists.

19. A self-backhaul IAB node, characterized in that: It includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the capability reporting method as described in any one of claims 1 to 7 are implemented; or, when the program or instruction is executed by the processor, the steps of the capability acquisition method as described in any one of claims 8 to 14 are implemented.

20. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the capability reporting method as described in any one of claims 1 to 7 are implemented; or, when the program or instruction is executed by the processor, the steps of the capability acquisition method as described in any one of claims 8 to 14 are implemented.

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