Return method and device, communication equipment, communication system and storage medium

Abstract

The invention provides a backhaul method, device and equipment and a storage medium, the method comprises the following steps: determining backhaul information, sending the backhaul information to a second node, the backhaul information being used for controlling a terminal, in a scene that IAB-MT accesses an NTN network, a first node being capable of determining the backhaul information after an IAB node accesses the NTN network, and sending the backhaul information to the second node; and assisting the second node to control the terminal.

Description

Backhaul method and device, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a backhaul method and apparatus, communication equipment, a communication system, and a storage medium. Background Art

[0002] Integrated access and backhaul (IAB) supports millimeter-wave base stations for wireless access and backhaul, effectively reducing the need for additional fiber deployment when deploying dense networks and enabling wireless relay in the Next Generation Radio Access Network (NG-RAN). Non-terrestrial Network (NTN), a key technology introduced by 5G, provides wireless resources via satellites (or drones) rather than ground-based base stations.

[0003] However, IAB-MT (IAB Mobile Termination) access to the NTN network is currently not supported. Furthermore, if the NTN is considered as the backhaul network in the IAB topology, significant transmission delay will be introduced when the NTN network is used in the IAB topology. Therefore, controlling user access, mobility, and QoS in this scenario is an urgent issue that needs to be addressed.

[0004] Summary of the Invention

[0005] The present disclosure provides a backhaul method and apparatus, communication equipment, a communication system, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a backhaul method is provided. The method is performed by a first node and includes:

[0007] Determine return information; and send the return information to the second node, wherein the return information is used to control the terminal.

[0008] According to a second aspect of an embodiment of the present disclosure, a backhaul method is provided. The method is performed by a second node and includes:

[0009] Receive the return information sent by the first node; and control the terminal according to the return information.

[0010] According to a third aspect of an embodiment of the present disclosure, a backhaul method is provided. The method is performed by a third node and includes:

[0011] Sending feedback information to the first node, wherein the feedback information is used to control the terminal.

[0012] According to a fourth aspect of an embodiment of the present disclosure, a first node is provided, including:

[0013] The processing module is used to determine the return information; the transceiver module is used to send the return information to the second node, wherein the return information is used to control the terminal.

[0014] According to a fifth aspect of an embodiment of the present disclosure, a second node is provided, including:

[0015] The transceiver module is used to receive the return information sent by the first node; the processing module is used to control the terminal according to the return information.

[0016] According to a sixth aspect of an embodiment of the present disclosure, a third node is provided, including:

[0017] The transceiver module is used to send feedback information to the first node, wherein the feedback information is used to control the terminal.

[0018] According to a seventh aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0019] A transceiver; a memory; and a processor, connected to the transceiver and the memory, respectively, configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and capable of implementing the backhaul method of any one of the first, second, and third aspects.

[0020] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes a return method as described in any one of the first, second and third aspects.

[0021] According to the ninth aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a first node, a second node, and a third node, wherein the first node is configured to implement the method of the first aspect, the second node is configured to implement the method of the second aspect, and the third node is configured to implement the method of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0024] FIG2 is an interactive diagram of a backhaul method provided by an embodiment of the present disclosure;

[0025] 3a-3f are schematic flow charts of a backhaul method provided in yet another embodiment of the present disclosure;

[0026] 4a-4c are schematic flow charts of a backhaul method provided in yet another embodiment of the present disclosure;

[0027] 5a-5c are schematic flow charts of a backhaul method provided in yet another embodiment of the present disclosure;

[0028] FIG6 is a schematic diagram of a flow chart of a backhaul method provided in yet another embodiment of the present disclosure;

[0029] 7a-7c are schematic flow charts of a backhaul method provided in yet another embodiment of the present disclosure;

[0030] FIG8a is a schematic structural diagram of a first node provided by an embodiment of the present disclosure;

[0031] FIG8b is a schematic structural diagram of a second node provided by an embodiment of the present disclosure;

[0032] FIG8c is a schematic structural diagram of a third node provided by an embodiment of the present disclosure;

[0033] FIG9a is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0034] FIG9 b is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] The method disclosed in the present invention can be used to solve the technical problem of "how to control user access, mobility and quality of service (QoS) in the scenario where IAB-MT accesses the NTN network".

[0036] The embodiments of the present disclosure provide a backhaul method and apparatus, a communication device, a communication system, and a storage medium.

[0037] In a first aspect, an embodiment of the present disclosure provides a backhaul method, the method comprising:

[0038] Determine return information; and send the return information to the second node, wherein the return information is used to control the terminal.

[0039] In the above embodiment, in the scenario where the IAB-MT accesses the NTN network, the first node can determine the return information after the IAB node accesses the NTN network, and assist the second node in controlling the terminal.

[0040] In some embodiments, IAB may also be VMR (Vehicle-Mounted Relay) or MBSR (Mobile Base Station Relay), or mobile IAB, which refers to a node that supports access, backhaul and / or relay functions, and IAB-donor refers to an access network device that manages the node, or is called an IAB host.

[0041] In combination with some embodiments of the first aspect, in some embodiments, determining the backhaul information includes at least one of the following: receiving the backhaul information from a third node; monitoring the delay of data packets transmitted between the terminal and the first node to determine the backhaul information; determining the backhaul information based on network operation, management and maintenance OAM function configuration.

[0042] In the above embodiment, it is clear that the return information can be received through the third node, and the return information can be determined based on transmission packet delay monitoring or OAM function configuration.

[0043] In combination with some embodiments of the first aspect, in some embodiments, receiving backhaul information from the third node includes at least one of the following: receiving a first message from the third node, wherein the first message carries backhaul information, and the first message is used to provide signaling services between the first node and the third node, wherein the first node is a centralized unit gNB-CU of the base station, and the third node is a distributed unit gNB-DU of the base station, or the first node is a centralized unit IAB-donor-CU of the integrated access and backhaul termination node IAB-donor-CU, and the third node is the IAB-DU in the integrated access and backhaul node IAB-node; receiving a second message from the third node, wherein the second message carries backhaul information, and the second message is used to provide signaling services between nodes of the wireless access network NG-RAN, the first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

[0044] In the above embodiment, it is clarified that the centralized unit gNB-CU of the base station can receive the backhaul information sent by the distributed unit gNB-DU of the base station, or the IAB-donor-CU can receive the backhaul information sent by the IAB-DU in the IAB-node.

[0045] In combination with some embodiments of the first aspect, in some embodiments, sending the return information to the second node includes: sending the return information to the second node through a non-terminal related message; or sending the return information to the second node through a terminal related message.

[0046] In the above embodiment, it is clear that the first node can send the return information to the second node through a non-terminal related message, or send the return information to the second node through a terminal related message.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the non-terminal-related message point in the first section is the base station gNB, the second node is the access and mobility management function AMF network element, and the non-terminal-related message or terminal-related message is an NGAP message.

[0048] In the above embodiment, the base station gNB that clearly serves the terminal sends the backhaul information to the AMF network element by sending a non-terminal-related or terminal-related NGAP message to the AMF network element, and then the AMF network element can control the terminal according to the backhaul information.

[0049] In combination with some embodiments of the first aspect, in some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0050] In the above embodiment, the base station gNB that clearly serves the terminal sends the backhaul information to the SMF network element by sending terminal-related messages to the SMF network element, including NGAP messages related to the PDU session, so that the SMF network element can control the terminal according to the backhaul information.

[0051] In combination with some embodiments of the first aspect, in some embodiments, the second node is used to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal based on the backhaul information.

[0052] In the above embodiment, in the scenario where the IAB-MT accesses the NTN network, the first node can determine the returned satellite information after the IAB node accesses the NTN network, and can assist the second node in performing at least one of access control, mobility management, and QoS control on the terminal.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite auxiliary information returned; and the cell information associated with the return information.

[0054] In a second aspect, an embodiment of the present disclosure proposes a backhaul method, which includes: receiving backhaul information sent by a first node; and controlling a terminal according to the backhaul information.

[0055] In the above embodiment, in the scenario where the IAB-MT accesses the NTN network, the second node may receive the return information determined by the first node and control the terminal according to the return information.

[0056] In combination with some embodiments of the second aspect, in some embodiments, receiving the return information sent by the first node includes: receiving the return information sent by the first node through a non-terminal related message; or receiving the return information sent by the first node through a terminal related message.

[0057] In the above embodiment, it is clear that the second node can receive the return information sent by the first node through a non-terminal related message, or receive the return information sent by the first node through a terminal related message.

[0058] In combination with some embodiments of the second aspect, in some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal-related message or terminal-related message is an NGAP message.

[0059] In the above embodiment, the base station gNB that clearly serves the terminal sends the backhaul information to the AMF network element by sending a non-terminal-related or terminal-related NGAP message to the AMF network element, and then the AMF network element can control the terminal according to the backhaul information.

[0060] In combination with some embodiments of the second aspect, in some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related messages include NGAP messages related to the PDU session.

[0061] In the above embodiment, the base station gNB that clearly serves the terminal sends the backhaul information to the SMF network element by sending terminal-related messages to the SMF network element, including NGAP messages related to the PDU session, so that the SMF network element can control the terminal according to the backhaul information.

[0062] In combination with some embodiments of the second aspect, in some embodiments, controlling the terminal according to the return information includes: performing at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the return information.

[0063] In the above embodiment, in the scenario where the IAB-MT accesses the NTN network, the second node can receive the returned satellite information determined by the first node after the IAB node accesses the NTN network, and then perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal.

[0064] In combination with some embodiments of the second aspect, in some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite auxiliary information returned; and the cell information associated with the terminal.

[0065] In a third aspect, an embodiment of the present disclosure proposes a backhaul method, which includes: sending backhaul information to a first node, wherein the backhaul information is used to control a terminal.

[0066] In the above embodiment, the third node sends the return information to the first node. The first node can determine the return information and send the return information to the second node to assist the second node in controlling the terminal.

[0067] In combination with some embodiments of the third aspect, in some embodiments, sending backhaul information to the first node includes at least one of the following: sending a first message to the first node, wherein the first message carries backhaul information, and the first message is used to provide signaling services between the first node and the third node, wherein the first node is a centralized unit gNB-CU of the base station, and the third node is a distributed unit gNB-DU of the base station, or the first node is a centralized unit IAB-donor-CU of the integrated access and backhaul termination node IAB-donor-CU, and the third node is the IAB-DU in the integrated access and backhaul node IAB-node; sending a second message to the first node, wherein the second message carries backhaul information, and the second message is used to provide signaling services between nodes of the wireless access network NG-RAN, the first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

[0068] In the above embodiment, it is clear that the IAB-DU in the IAB-node sends backhaul information to the IAB-donor-CU when it is integrated, or the donor-CU of the IAB-MT sends backhaul information to the donor-CU of the IAB-DU when it performs the transmission migration management process, so that the node serving the terminal can determine the backhauled satellite information after the IAB node accesses the NTN network, thereby assisting the core network or other base stations to control the terminal.

[0069] In combination with some embodiments of the third aspect, in some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite auxiliary information returned; and the cell information associated with the terminal.

[0070] In a fourth aspect, the present disclosure provides a first node, including:

[0071] The processing module is used to determine the return information; the transceiver module is used to send the return information to the second node, wherein the return information is used to control the terminal.

[0072] In a fifth aspect, the embodiment of the present disclosure proposes a second node, including:

[0073] The transceiver module is used to receive the return information sent by the first node; the processing module is used to control the terminal according to the return information.

[0074] In a sixth aspect, the present disclosure provides a third node, including:

[0075] The transceiver module is used to send feedback information to the first node, wherein the feedback information is used to control the terminal.

[0076] In the seventh aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; one or more memories for storing instructions; wherein the processor is used to call the instructions so that the communication device executes the backhaul method described in the optional implementation of the first aspect, the second aspect and the third aspect, or the optional implementation of the first aspect, the second aspect and the third aspect.

[0077] In an eighth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the network device is configured to execute the method described in the first aspect, the second aspect and the optional implementation of the third aspect, or the method described in the first aspect, the second aspect and the optional implementation of the third aspect.

[0078] In the ninth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first aspect, the second aspect and the third aspect, or the optional implementation of the first aspect, the second aspect and the third aspect.

[0079] In the tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first aspect, the second aspect and the third aspect, or the optional implementation of the first aspect, the second aspect and the third aspect.

[0080] In the eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the method described in the optional implementation of the first aspect, the second aspect and the third aspect, or the optional implementation of the first aspect, the second aspect and the third aspect.

[0081] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first aspect, the second aspect, and the third aspect.

[0082] It is understandable that the first node, second node, third node, communication device, communication system, storage medium, program product, and computer program are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0083] The present disclosure provides a backhaul method. In some embodiments, the terms "backhaul method" and "information processing method" and "communication method" are interchangeable; the terms "information transmission device" and "information processing device" and "communication device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0084] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0085] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0086] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0087] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0088] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0089] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0090] In the embodiments of the present disclosure, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," and "in response to one case A, in response to another case B" may include the following technical solutions depending on the circumstances: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0091] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0092] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0093] In some embodiments, "including A", "containing A", "used to indicate A", and "carrying A" can be interpreted as directly carrying A or indirectly indicating A, where carrying can also mean "include".

[0094] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0095] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0096] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0097] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0098] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0099] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0100] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0101] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0102] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0103] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0104] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0105] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0106] As shown in Figure 1, a communication system 100 may include a first node 101, a second node 102, and a third node 103. The first node is a serving node of a terminal.

[0107] In some embodiments, the first node 101 is a radio access network (RAN) service node of the terminal, such as a serving gNB.

[0108] In some embodiments, the communication system 100 can be applied to an IAB scenario, where the termination node of the network-side NR backhaul is called an IAB-donor, and the NG-RAN supports IAB by wirelessly connecting to a gNB (called an IAB-donor) that can serve the IAB-node through the IAB-node.

[0109] In some embodiments, the IAB-donor consists of one IAB-donor-CU (Central Unit) and one or more IAB-donor-DUs (Distributed Units). When the gNB-CU-CP and gNB-CU-UP are separate, the IAB-donor may consist of one IAB-donor-CU-CP, multiple IAB-donor-CU-UPs, and multiple IAB-donor-DUs. The IAB-node connects to the upstream IAB-node or IAB-donor-DU via a subset of terminal functions on the NR Uu interface (referred to as the IAB-MT functions within the IAB-node). The IAB-node provides wireless backhaul to the downstream IAB-node and terminals via network functions on the NR Uu interface (referred to as the IAB-DU functions within the IAB-node). F1-C traffic between the IAB-node and the IAB-donor-CU is backhauled via the IAB-donor-DU and optional intermediate hop IAB-nodes. The F1-U service between the IAB-node and the IAB-donor-CU is backhauled through the IAB-donor-DU and an optional intermediate hop IAB-node.

[0110] In some embodiments, the first node 101 is, for example, a base station (gNB), an IAB-donor-CU, or an IAB-donor-CU with FI connection termination (hereinafter referred to as F1-terminating-IAB-donor-CU).

[0111] In some embodiments, the second node 102 is a core network service node of the terminal, such as an access and mobility management function (AMF) network element or a session management function (SMF) network element.

[0112] In some embodiments, the third node 103 is, for example, an IAB-DU, a gNB-DU, an IAB-donor-CU, an RRC-terminating IAB-donor-CU (hereinafter referred to as RRC-terminating-IAB-donor-CU), or an Operation Administration and Maintenance (OAM) of an IAB-node.

[0113] In some embodiments, the communication system 100 can be applied to a non-terrestrial network (NTN). In NTN communications, wireless resources are provided by satellites (or drones) rather than ground base stations. The communication connection between the terminal and the satellite is a service link, and the connection between the satellite and the ground receiving station is a feeder link. The ground receiving station is connected to the core network, thereby enabling the terminal to access the core network through the satellite access network.

[0114] In some embodiments, the IAB-node can access the NTN network as an NTN terminal, and use the NTN as a backhaul network in the IAB topology. The NTN can provide wider coverage for the deployment of the IAB.

[0115] In some embodiments, one or more IAB-nodes in the communication system 100 access a non-terrestrial network (NTN). For example, IAB-node 1 accesses an IAB-donor-DU via the NTN, and a wired connection is established between the IAB-donor-CU and the IAB-donor-DU.

[0116] In some embodiments, the terminal includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0117] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0118] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0119] FIG2 is an interactive diagram of a backhaul method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a backhaul method for a communication system 100, the method comprising:

[0120] In an embodiment of the present disclosure, the backhaul method includes: the first node 101 confirms the backhaul information, the first node 101 sends the backhaul information to the second node 102, and the second node 102 can control the terminal according to the backhaul information.

[0121] The first node 101 is a service node of the terminal.

[0122] In some embodiments, the first node 101 is a wireless access network service node of the terminal, such as a service base station, and the second node 102 is a core network service node of the terminal, such as an AMF network element or an SMF network element.

[0123] In some embodiments, the first node 101 may be a base station, a gNB-CU, an IAB-donor-CU, or an F1-terminating-IAB-donor-CU.

[0124] In some embodiments, the third node 103 may be an IAB-DU, a gNB-DU, an IAB-donor-CU, an RRC-terminating-IAB-donor-CU, or an OAM in an IAB-donor.

[0125] In some embodiments, the first node 101 determines the return information including at least one of the following steps 2101 , 2102 , and 2103 .

[0126] Step 2101: The third node 103 sends feedback information to the first node 101.

[0127] In some embodiments, the third node 103 sending backhaul information to the first node 101 includes: the third node 103 sending a first message to the first node 101, wherein the first message carries backhaul information, and the first message is used to provide signaling services between the first node 101 and the third node 103, wherein the first node 101 is a centralized unit gNB-CU of the base station, and the third node 103 is a distributed unit gNB-DU of the base station, or the first node 101 is a centralized unit IAB-donor-CU of the integrated access and backhaul termination node, and the third node 103 is an IAB-DU in the integrated access and backhaul node IAB-node.

[0128] In some embodiments, the gNB-DU sends backhaul information to the gNB-CU when establishing an F1 connection, or the IAB-DU in the IAB-node sends backhaul information to the IAB-donor-CU when integrating.

[0129] In some embodiments, the first node 101 is a gNB-CU and the third node 103 is a gNB-DU. The backhaul information is carried in an F1AP message sent from the gNB-DU to the gNB-CU. The F1AP provides signaling services between the gNB-CU and the gNB-DU.

[0130] In some embodiments, the signaling services provided by the F1AP between the gNB-CU and gNB-DU nodes are divided into non-UE-related services and UE-related services. Backhaul information can be carried in the F1 Setup Request message or the gNB-DU Configuration Update message.

[0131] In some embodiments, the first node 101 is an IAB-donor-CU, the third node 103 is an IAB-DU in the IAB-node, and the backhaul information is included in an F1AP message sent by the IAB-DU to the IAB-donor-CU, where the F1AP provides a signaling service between the IAB-donor-CU node and the IAB-DU node in the IAB-node.

[0132] In some embodiments, the signaling services provided by the F1AP between the IAB-donor-CU node and the IAB-DU node in the IAB-node are divided into non-UE-related services and UE-related services. The backhaul information can be carried in the F1 Setup Request message or the gNB-DU Configuration Update message.

[0133] In some embodiments, the F1-terminating-donor-CU is the IAB-donor-CU to which the IAB-DU in the IAB-node is connected.

[0134] In some embodiments, the first node 101 is an F1-terminating-donor-CU, the third node is an IAB-DU in the IAB-node, and the backhaul information is included in an F1AP message sent by the IAB-DU to the F1-terminating-IAB-donor-CU, such as an F1 setup request message, or Configuration update message.

[0135] Exemplarily, the IAB-DU in the IAB-node sends an F1 setup request message to the F1-terminating-donor-CU, the F1-terminating-donor-CU receives and stores the feedback information, and sends an F1 setup feedback message to the IAB-DU, wherein the F1 setup request message includes the feedback information.

[0136] In some embodiments, the third node 103 sending the backhaul information to the first node 101 includes: the third node 103 sending a second message to the first node 101, wherein the second message carries the backhaul information, and the second message is used to provide signaling services between nodes of the wireless access network (NG-RAN), the first node 101 is an IAB-donor-CU of an IAB-DU in an IAB-node, and the third node 103 is an IAB-donor-CU of an IAB-MT in the IAB-node. In some embodiments, the donor-CU of the IAB-MT sends the backhaul information to the donor-CU of the IAB-DU when performing a transport migration management process.

[0137] In some embodiments, the donor-CU of the IAB-MT sends a second message to the donor-CU of the IAB-DU. The second message is such as an XnAP message. The XnAP message carries backhaul information. The XnAP message is used to provide signaling services between wireless access network NG-RAN nodes. The NG-RAN nodes include gNB, gNB-CU, IAB-donor, and IAB-donor-CU.

[0138] In some embodiments, the F1-terminating-donor-CU is an IAB-donor-CU to which the IAB-DU in the IAB-node is connected, the RRC-terminating-donor-CU is an IAB-donor-CU to which the IAB-MT in the IAB-node is connected, and the backhaul information is included in an XnAP message sent by the RRC-terminating-IAB-donor-CU to the F1-terminating-IAB-donor-CU.

[0139] Exemplarily, RRC-terminating-donor-CU sends an XnAP message to F1-terminating-donor-CU, which includes return information. F1-terminating-donor-CU receives and saves the information, wherein the return information includes associated cell information. The IAB-DU of the IAB-node sends an F1AP message to the F1-terminating-donor-CU, which includes the serving cell information of the IAB-MT. The F1-terminating-donor-CU determines the return information of the serving cell of the IAB-MT based on the serving cell information and return information of the IAB-MT.

[0140] In some embodiments, the XnAP message is, for example, an Xn setup request message, a RAN configuration update message, a transport migration management request message, or a transport migration management feedback message.

[0141] In some embodiments, the third node 103 is an OAM node, and the first node 101 may obtain configuration information from the OAM node to determine the return information.

[0142] Step 2102: monitor the delay of data packets transmitted between the terminal and the first node 101 to determine return information.

[0143] In some embodiments, the first node 101 confirms the returned information based on implementation, for example, confirms the returned information based on monitoring.

[0144] In some embodiments, monitoring the latency of a data packet transmitted between the terminal and the first node 101 includes monitoring the latency of an uplink transmission or a downlink transmission of a data packet between the terminal and the first node 101 .

[0145] In some embodiments, the delay may refer to an average value or other statistical value of the delay, which is not limited in the present disclosure.

[0146] In some embodiments, NG-RAN uses a satellite backhaul network, and the satellite type can also be inferred based on the latency.

[0147] Step 2103: The first node 101 determines the return information based on the network operation, administration and maintenance (OAM) function configuration.

[0148] It should be noted that the above steps 2101-2103 can all enable the first node 101 to determine the return information and selectively implement at least one of them, for example, respectively implementing step 2101, step 2102, and step 2103 in different embodiments, or simultaneously implementing step 2101 and step 2102 in the same embodiment, or simultaneously implementing step 2101 and step 2103 in the same embodiment, or simultaneously implementing step 2102 and step 2103 in the same embodiment, or simultaneously implementing step 2101, step 2102, and step 2103 in the same embodiment.

[0149] Step 2104 : The first node 101 sends feedback information to the second node 102 .

[0150] The returned information is used to control the terminal.

[0151] In some embodiments, sending the return information to the second node 102 includes: sending the return information to the second node 102 via a non-terminal related message; or sending the return information to the second node 102 via a terminal related message.

[0152] In some embodiments, the first node 101 is a base station gNB, the second node 102 is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0153] In some embodiments, the non-terminal related message is an NG setup message or a RAN configuration update message sent by the base station as the first node 101 to the AMF as the second node 102, which includes a cell message, and each cell information includes backhaul information.

[0154] In some embodiments, the terminal-related message is an initial terminal message sent by the base station as the first node 101 to the AMF as the second node.

[0155] In some embodiments, the first node 101 is a base station gNB, the second node 102 is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0156] In some embodiments, the messages related to the PDU session include at least one of a UE context establishment feedback message, a UE context modification feedback message, a UE context modification request message, a PDU session resource establishment feedback message, a PDU session resource modification feedback message, and a PDU session resource modification indication message.

[0157] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the ephemeris information returned; the satellite assistance information returned; and the cell information associated with the return information.

[0158] In some embodiments, the type of backhaul may refer to the type of backhaul network.

[0159] In some embodiments, if the backhaul network is a TNT network, the backhaul type may refer to the type of the TNT network, which may include TNT networks deployed on high-altitude platforms such as satellites, unmanned aerial vehicles (UAVs), balloons in the stratosphere, and airships.

[0160] In some embodiments, when the NTN network is used in the IAB topology, significant transmission delay will be introduced. Therefore, after the IAB node accesses the NTN network, it is necessary to determine the backhaul delay information to assist the core network or other base stations in performing access control, mobility management, and / or QoS management on the terminal.

[0161] In some embodiments, the type of satellite used for return transmission is related to the delay of return transmission, and the delay of return transmission can be evaluated based on the type of satellite used for return transmission.

[0162] In some embodiments, NG-RAN uses satellite backhaul, and the core network, such as AMF and SMF, needs to know the satellite backhaul type to control the UE's PDU session.

[0163] In some embodiments, the satellite backhaul type refers to the type of satellite used in the backhaul, including GEO (Geosynchronous Earth Orbit), MEO (Medium Earth Orbit), LEO (Low Earth Orbit) or other platforms OTHERSAT, dynamic geostationary orbit satellite DYNAMIC_GEO, dynamic medium and high orbit satellite DYNAMIC_MEO, dynamic low orbit satellite DYNAMIC LEO, and other dynamic platforms DYNAMIC_OTHERSAT.

[0164] In some embodiments, the NG-RAN uses dynamic satellite backhaul, where the capabilities of the satellite backhaul including latency and / or bandwidth vary over time, e.g. due to the use of different inter-satellite links as part of the backhaul, the AMF notifies the SMF of the corresponding dynamic satellite backhaul category to serve the PDU session.

[0165] In some embodiments, the return delay can be determined more accurately based on the returned satellite ephemeris information and / or the returned satellite auxiliary information. When the IAB node is accessed as a terminal, the returned satellite ephemeris information and / or the returned satellite auxiliary information can be obtained through the base station broadcast.

[0166] In some embodiments, the cell associated with the backhaul information is a service cell of a satellite network. When the terminal accesses the network through the cell, the core network can provide quality of service (QoS) control based on the cell information associated with the backhaul information.

[0167] Step 2105: The second node 102 controls the terminal according to the returned information.

[0168] In some embodiments, the second node 102 controlling the terminal according to the return information includes: the second node 102 performing at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the return information.

[0169] In some embodiments, the second node 102 is an AMF, and the AMF can control terminal access and / or mobility based on the backhaul information.

[0170] In some embodiments, the second node 102 is an SMF, and the SMF can control the QoS of the terminal according to the return information.

[0171] The communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2105, such as step 2101 + step 2104 + step 2105 can be implemented as an independent embodiment, and step 2102 + step 2104 + step 2105 can be implemented as an independent embodiment, but is not limited to this.

[0172] In some embodiments, steps 3101 to 3013 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0173] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0174] FIG3a is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG3a , the embodiment of the present disclosure relates to a backhaul method, which is executed by the first node 101 and includes:

[0175] Step 3101: Receive a first message from a third node.

[0176] The first message carries backhaul information and is used to provide signaling services between the first node and the third node, wherein the first node is the centralized unit gNB-CU of the base station, and the third node is the distributed unit gNB-DU of the base station, or the first node is the centralized unit IAB-donor-CU of the integrated access and backhaul termination node, and the third node is the IAB-DU in the integrated access and backhaul node IAB-node.

[0177] In some embodiments, the first message is an F1AP message, and the backhaul message is included in the F1AP message, such as an F1 setup request message or a gNB-DU configuration update message.

[0178] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0179] Step 3102: Send the return information to the second node.

[0180] The returned information is used to control the terminal.

[0181] The optional implementation of step S3102 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0182] In some embodiments, sending the return information to the second node includes: sending the return information to the second node via a non-terminal related message; or sending the return information to the second node via a terminal related message.

[0183] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0184] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0185] In some embodiments, the second node is configured to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the backhaul information.

[0186] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the return information.

[0187] The communication method involved in the embodiment of the present disclosure may include at least one of step S3101 and step S3102. Step 3102 can be implemented as an independent embodiment, and steps 3101+3102 can be implemented as independent embodiments, but are not limited thereto.

[0188] In some embodiments, step 3101 is optional and may be omitted or replaced in different embodiments.

[0189] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0190] FIG3b is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG3b , the embodiment of the present disclosure relates to a backhaul method, which is executed by the first node 101 and includes:

[0191] Step 3201: Receive a second message from a third node.

[0192] Among them, the second message carries return information, and the second message is used to provide signaling services between wireless access network NG-RAN nodes. The first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

[0193] In some embodiments, the second message is an XnAP message, and the return information is included in the XnAP message, such as an Xn setup request message, a RAN configuration update message, a transport migration management request message, or a transport migration management feedback message.

[0194] The optional implementation of step S3201 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0195] Step 3202: Send the return information to the second node.

[0196] The returned information is used to control the terminal.

[0197] The optional implementation of step S3202 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0198] In some embodiments, sending the return information to the second node includes: sending the return information to the second node via a non-terminal related message; or sending the return information to the second node via a terminal related message.

[0199] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0200] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0201] In some embodiments, the second node is configured to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the backhaul information.

[0202] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the return information.

[0203] The communication method involved in the embodiment of the present disclosure may include at least one of step S3201 and step S3202. Step 3202 can be implemented as an independent embodiment, and steps 3201+3202 can be implemented as independent embodiments, but are not limited thereto.

[0204] In some embodiments, step 3201 is optional and may be omitted or replaced in different embodiments.

[0205] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0206] FIG3c is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG3c, the embodiment of the present disclosure relates to a backhaul method, which is executed by the first node 101 and includes:

[0207] Step 3301: Receive feedback information from a third node.

[0208] The optional implementation of step S3301 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0209] In some embodiments, receiving backhaul information from the third node includes at least one of the following: receiving a first message from the third node, wherein the first message carries backhaul information, and the first message is used to provide signaling services between the first node and the third node, wherein the first node is a centralized unit gNB-CU of the base station, and the third node is a distributed unit gNB-DU of the base station, or the first node is a centralized unit IAB-donor-CU of the integrated access and backhaul termination node, and the third node is the IAB-DU in the integrated access and backhaul node IAB-node; receiving a second message from the third node, wherein the second message carries backhaul information, and the second message is used to provide signaling services between nodes of the wireless access network NG-RAN, the first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

[0210] In some embodiments, the first message is an F1AP message, and the backhaul message is included in the F1AP message, such as an F1 setup request message or a gNB-DU configuration update message.

[0211] In some embodiments, the second message is an XnAP message, and the return information is included in the XnAP message, such as an Xn setup request message, a RAN configuration update message, a transport migration management request message, or a transport migration management feedback message.

[0212] Step 3302: Send the return information to the second node.

[0213] The returned information is used to control the terminal.

[0214] The optional implementation of step S3302 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0215] In some embodiments, sending the return information to the second node includes: sending the return information to the second node via a non-terminal related message; or sending the return information to the second node via a terminal related message.

[0216] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0217] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0218] In some embodiments, the second node is configured to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the backhaul information.

[0219] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the return information.

[0220] The communication method involved in the embodiment of the present disclosure may include at least one of step S3301 and step S3302. Step 3302 can be implemented as an independent embodiment, and steps 3301+3302 can be implemented as independent embodiments, but are not limited thereto.

[0221] In some embodiments, step 3301 is optional and may be omitted or replaced in different embodiments.

[0222] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0223] FIG3 d is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG3 d , the embodiment of the present disclosure relates to a backhaul method, which is executed by the first node 101 and includes:

[0224] Step 3401: Monitor the delay of data packets transmitted between the terminal and the first node to determine return information.

[0225] The optional implementation of step S3401 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0226] Step 3402: Send the return information to the second node.

[0227] The returned information is used to control the terminal.

[0228] The optional implementation of step S3402 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0229] In some embodiments, sending the return information to the second node includes: sending the return information to the second node via a non-terminal related message; or sending the return information to the second node via a terminal related message.

[0230] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0231] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0232] In some embodiments, the second node is configured to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the backhaul information.

[0233] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the return information.

[0234] The communication method involved in the embodiment of the present disclosure may include at least one of step S3401 and step S3402. Step 3402 can be implemented as an independent embodiment, and steps 3401+3402 can be implemented as independent embodiments, but are not limited thereto.

[0235] In some embodiments, step 3401 is optional and may be omitted or replaced in different embodiments.

[0236] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0237] FIG3e is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG3e , the embodiment of the present disclosure relates to a backhaul method, which is executed by the first node 101 and includes:

[0238] Step 3501: Determine return information based on network operation, administration and maintenance (OAM) function configuration.

[0239] The optional implementation of step S3501 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0240] Step 3502: Send the return information to the second node.

[0241] The returned information is used to control the terminal.

[0242] The optional implementation of step S3502 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0243] In some embodiments, sending the return information to the second node includes: sending the return information to the second node via a non-terminal related message; or sending the return information to the second node via a terminal related message.

[0244] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0245] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0246] In some embodiments, the second node is configured to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the backhaul information.

[0247] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the return information.

[0248] The communication method involved in the embodiment of the present disclosure may include at least one of step S3501 and step S3502. Step 3502 can be implemented as an independent embodiment, and steps 3501+3502 can be implemented as independent embodiments, but are not limited thereto.

[0249] In some embodiments, step 3501 is optional and may be omitted or replaced in different embodiments.

[0250] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0251] FIG3f is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG3f , the embodiment of the present disclosure relates to a backhaul method, which is executed by the first node 101 and includes:

[0252] Step 3601: Determine the return information.

[0253] The optional implementation of step S3601 can refer to the optional implementation of steps S2101 to S2103 in Figure 2, and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0254] In some embodiments, determining the backhaul information includes at least one of the following: receiving the backhaul information from a third node; monitoring the delay of data packets transmitted between the terminal and the first node to determine the backhaul information; determining the backhaul information based on network operation, management and maintenance OAM function configuration.

[0255] Step 3602: Send the return information to the second node.

[0256] The returned information is used to control the terminal.

[0257] The optional implementation of step S3602 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0258] In some embodiments, sending the return information to the second node includes: sending the return information to the second node via a non-terminal related message; or sending the return information to the second node via a terminal related message.

[0259] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0260] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

[0261] In some embodiments, the second node is configured to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the backhaul information.

[0262] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the return information.

[0263] The communication method involved in the embodiment of the present disclosure may include at least one of step S3601 and step S3602. Step 3602 can be implemented as an independent embodiment, and steps 3601+3602 can be implemented as independent embodiments, but are not limited thereto.

[0264] In some embodiments, step 3601 is optional and may be omitted or replaced in different embodiments.

[0265] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0266] FIG4a is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG4a , the embodiment of the present disclosure relates to a backhaul method for a second node 102, the method comprising:

[0267] Step 4101: Receive feedback information sent by the first node through a non-terminal related message.

[0268] The optional implementation of step 4101 can refer to the optional implementation of step 2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0269] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message is an NGAP message.

[0270] Step 4102: Control the terminal according to the returned information.

[0271] The optional implementation of step 4102 can refer to the optional implementation of step 2105 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0272] In some embodiments, controlling the terminal according to the return information includes: performing at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the return information.

[0273] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the terminal.

[0274] The communication method involved in the embodiment of the present disclosure may include at least one of step S4101 and step S4102. For example, step 4101+4102 may be implemented as an independent embodiment, but is not limited thereto.

[0275] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, and the optional methods or optional examples can be arbitrarily combined and can be arbitrarily combined with other embodiments or examples.

[0276] FIG4 b is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG4 b , the embodiment of the present disclosure relates to a backhaul method for a second node 102, the method comprising:

[0277] Step 4201: Receive feedback information sent by the first node through terminal-related messages.

[0278] The optional implementation of step 4201 can refer to the optional implementation of step 2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0279] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the terminal-related message is an NGAP message.

[0280] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related messages include NGAP messages related to the PDU session.

[0281] Step 4202: Control the terminal according to the returned information.

[0282] The optional implementation of step 4202 can refer to the optional implementation of step 2105 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0283] In some embodiments, controlling the terminal according to the return information includes: performing at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the return information.

[0284] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the terminal.

[0285] The communication method involved in the embodiment of the present disclosure may include at least one of step S4201 and step S4202. For example, step 4201+4202 may be implemented as an independent embodiment, but is not limited thereto.

[0286] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, and the optional methods or optional examples can be arbitrarily combined and can be arbitrarily combined with other embodiments or examples.

[0287] FIG4c is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG4c , the embodiment of the present disclosure relates to a backhaul method for a second node 102, the method comprising:

[0288] Step 4301: Receive feedback information sent by the first node.

[0289] The optional implementation of step 4301 can refer to the optional implementation of step 2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0290] In some embodiments, receiving the return information sent by the first node includes: receiving the return information sent by the first node through a non-terminal related message; or receiving the return information sent by the first node through a terminal related message.

[0291] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0292] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related messages include NGAP messages related to the PDU session.

[0293] Step 4302: Control the terminal according to the returned information.

[0294] The optional implementation of step 4302 can refer to the optional implementation of step 2105 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0295] In some embodiments, controlling the terminal according to the return information includes: performing at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the return information.

[0296] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the terminal.

[0297] The communication method involved in the embodiment of the present disclosure may include at least one of step S4301 and step S4302. For example, step 4301+4302 may be implemented as an independent embodiment, but is not limited thereto.

[0298] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, and the optional methods or optional examples can be arbitrarily combined and can be arbitrarily combined with other embodiments or examples.

[0299] FIG5a is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG5a , the embodiment of the present disclosure relates to a backhaul method for a third node 103, the method comprising:

[0300] Step 5101: Send a first message to a first node, where the first message carries return information.

[0301] The first message is used to provide signaling services between a first node and a third node, wherein the first node is a centralized unit gNB-CU of the base station and the third node is a distributed unit gNB-DU of the base station.

[0302] In some embodiments, the first message is an F1AP message, and the backhaul message is included in the F1AP message, such as an F1 setup request message or a gNB-DU configuration update message.

[0303] In some embodiments, the third node is an IAB-node, and the IAB-MT in the third node can determine the return information by reading the system information of the service cell. For example, if the system information includes satellite-related information (for example, ephemeris information), the third node can confirm the type of satellite (i.e., the type of the return satellite) and the transmission delay.

[0304] The optional implementation of step 5101 can refer to the optional implementation of step 2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0305] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the terminal.

[0306] In this embodiment or example, the optional modes or optional examples may be arbitrarily combined without contradiction, and may be arbitrarily combined with other embodiments or examples.

[0307] FIG5b is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG5b , the embodiment of the present disclosure relates to a backhaul method for a third node 103, the method comprising:

[0308] Step 5201: Send a second message to the first node, where the second message carries return information.

[0309] The second message is used to provide signaling services between nodes of the radio access network NG-RAN, the first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

[0310] In some embodiments, the second message is an XnAP message, and the return information is included in the XnAP message, such as an Xn setup request message, a RAN configuration update message, a transport migration management request message, or a transport migration management feedback message.

[0311] The optional implementation of step 5201 can refer to the optional implementation of step 2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0312] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the terminal.

[0313] In this embodiment or example, the optional modes or optional examples may be arbitrarily combined without contradiction, and may be arbitrarily combined with other embodiments or examples.

[0314] FIG5c is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG5c, the embodiment of the present disclosure relates to a backhaul method for a third node 103, the method comprising:

[0315] Step 5301: Send feedback information to the first node, where the feedback information is used to control the terminal.

[0316] The optional implementation of step 5301 can refer to the optional implementation of step 2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0317] In some embodiments, sending backhaul information to the first node includes at least one of the following: sending a first message to the first node, wherein the first message carries backhaul information, and the first message is used to provide signaling services between the first node and the third node, wherein the first node is a centralized unit gNB-CU of the base station, and the third node is a distributed unit gNB-DU of the base station, or the first node is a centralized unit IAB-donor-CU of the integrated access and backhaul termination node, and the third node is the IAB-DU in the integrated access and backhaul node IAB-node; sending a second message to the first node, wherein the second message carries backhaul information, and the second message is used to provide signaling services between nodes of the wireless access network NG-RAN, the first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

[0318] In some embodiments, the returned information includes at least one of the following: the type of return; the type of satellite returned; the delay information returned; the satellite ephemeris information returned; the satellite assistance information returned; and the cell information associated with the terminal.

[0319] In this embodiment or example, the optional modes or optional examples may be arbitrarily combined without contradiction, and may be arbitrarily combined with other embodiments or examples.

[0320] FIG6 is a flow chart of a backhaul method according to an embodiment of the present disclosure. As shown in FIG6 , the embodiment of the present disclosure relates to a backhaul method for a communication system, the method comprising:

[0321] Step 6101: The third node sends the first time information to . Optional implementations of step 6101 can refer to the optional implementations of step 2101 in FIG2 and other related parts in the embodiment involved in FIG2 .

[0322] In some optional embodiments, step 6101 may include step 3301 of Figure 3c and step 5301 of Figure 5c, as well as optional implementation methods of Figures 3a-3f and 5a-5c, and other related parts in the embodiment involved in Figure 2, which are not repeated here.

[0323] Step 6102: The first node determines the return information. Optional implementations of step 6102 may refer to the optional implementations of steps 2101 to 2103 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 .

[0324] In some optional embodiments, step 6102 may include step 3601 of Figure 3f, as well as the optional implementation methods of Figures 3a-3f, and other related parts in the embodiment involved in Figure 2, which are not repeated here.

[0325] Step 6103: The first node sends the return information to the second node, wherein the return information is used to control the terminal. Optional implementations of step 6103 may refer to the optional implementations of step 2104 in FIG. 2 and other related parts of the embodiment involved in FIG.

[0326] In some optional embodiments, step 6103 may include step 3602 of Figure 3f and step 4301 of Figure 4c, as well as optional implementation methods of Figures 3a-3f, Figures 4a-4c, and other related parts in the embodiment involved in Figure 2, which are not repeated here.

[0327] Step 6104: The second node controls the terminal according to the returned information. Optional implementations of step 6104 may refer to the optional implementations of step 2105 in FIG2 and other related parts of the embodiment involved in FIG2.

[0328] In some optional embodiments, step 6104 may include step 4301 of FIG. 4 c , as well as the optional implementations of FIG. 4 a - 4 c , and other related parts of the embodiment involved in FIG. 2 , which are not described in detail here.

[0329] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, the first node side, the second node side, and the third node side, etc., which will not be repeated here.

[0330] The following Figures 7a-7c are exemplary introductions to the above method.

[0331] In some embodiments, when the IAB-DU in the IAB-node is integrated, it sends backhaul information to the IAB-donor-CU, so that the node serving the terminal, such as the F1-terminating-donor-CU, can determine the backhauled satellite information after the IAB node accesses the NTN network, thereby assisting the core network or other base stations to perform access control, mobility management and / or QoS management on the terminal.

[0332] In an example, as shown in FIG7 a , an IAB-MT in an IAB-node accesses an IAB-donor-CU via a satellite. The IAB-donor-CU accessed by the IAB-MT is, for example, the RRC-terminating-donor-CU shown in the figure.

[0333] In some embodiments, the IAB-MT may confirm the return information by reading system information from the RRC-terminating-donor-CU.

[0334] In some embodiments, the first node may be an F1-terminating-donor-CU, the third node may be an IAB-node or an IAB-DU in an IAB-node, and the second node may be a core network or other base station.

[0335] Step 7101: The IAB-DU in the IAB-node sends an F1 setup request message to the F1-terminating-donor-CU, where the F1 setup request message includes return information.

[0336] Step 7102: The F1-terminating-donor-CU receives and saves the returned information, and sends an F1 establishment feedback message to the IAB-DU.

[0337] In some embodiments, the backhaul information will be saved as cell information, and the F1-terminating-donor-CU can send the cell information to the core network node or other base station for access control, mobility management and / or QoS control of the UE.

[0338] In other embodiments, when executing the transmission migration management process, the donor-CU of the IAB-MT sends backhaul information to the donor-CU of the IAB-DU, so that the node serving the IAB-MT, such as the F1-terminating-donor-CU, can determine the backhauled satellite information after the IAB node accesses the NTN network, thereby assisting the core network or other base stations to perform access control, mobility management and / or QoS management on the IAB-MT.

[0339] In an example, as shown in FIG7 b , the IAB-MT in the IAB-node accesses the IAB-donor-CU via a satellite. The IAB-donor-CU accessed by the IAB-MT is, for example, the RRC-terminating-donor-CU shown in the figure, and the IAB-donor-CU accessed by the IAB-DU in the IAB-node is, for example, the F1-terminating-donor-CU shown in the figure.

[0340] In some embodiments, the first node is the donor-CU of IAB-DU, which may be F1-terminating-donor-CU, the third node is the donor-CU of IAB-MT, which may be RRC-terminating-donor-CU, and the second node is a core network node or other base station.

[0341] Step 7201: The RRC-terminating-donor-CU sends an XnAP message to the F1-terminating-donor-CU. The message includes return information. The F1-terminating-donor-CU receives and saves the message. The return information includes associated cell information.

[0342] Step 7202: The IAB-DU of the IAB-node sends an F1AP message to the F1-terminating-donor-CU. The message includes the serving cell information of the IAB-MT.

[0343] In some embodiments, the F1-terminating-donor-CU determines the backhaul information of the serving cell of the IAB-MT according to the serving cell information of the IAB-MT and the backhaul information received from step 7101 .

[0344] In some embodiments, the backhaul information will be saved as cell information, and the F1-terminating-donor-CU can send the cell information to the core network node or other base station for access control, mobility management and / or QoS control of the UE.

[0345] In some embodiments, the second node receiving the return information sent by the first node includes: receiving the return information sent by the first node through a non-terminal related message; or receiving the return information sent by the first node through a terminal related message.

[0346] In some embodiments, the first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is an NGAP message.

[0347] In one example, as shown in step 7301a of Figure 7c, the gNB sends a non-UE-related NGAP message to the AMF, which includes a cell message, and each cell information includes backhaul information, and the AMF sends the backhaul information to the SMF.

[0348] In some embodiments, the gNB may also be an IAB-donor-CU or an F1-terminating-donor-CU.

[0349] In some embodiments, the AMF may control UE access and / or mobility based on backhaul information.

[0350] In some embodiments, the SMF may control the UE's QoS based on the backhaul information.

[0351] In some embodiments, the first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related messages include NGAP messages related to the PDU session.

[0352] In one example, as shown in step 7301b of Figure 7c, the gNB sends a UE-related NGAP message to the SMF, which includes backhaul information.

[0353] In some embodiments, the SMF may control the UE's QoS based on the backhaul information.

[0354] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a user equipment in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0355] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0356] In the embodiment of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0357] Figure 8a is a schematic diagram of the structure of the first node proposed in an embodiment of the present disclosure. As shown in Figure 8a, the first node includes: a processing module for determining return information; a transceiver module for sending the return information to the second node, wherein the return information is used to control the terminal. Optionally, the above-mentioned receiving module is used to execute the steps related to "sending the return information to the second node" performed by the first node 101 in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module is used to execute the steps related to "determining the return information" performed by the first node 101 in any of the above methods, which will not be repeated here.

[0358] Figure 8b is a schematic diagram of the structure of the second node proposed in an embodiment of the present disclosure. As shown in Figure 8b, the second node includes: a transceiver module for receiving the return information sent by the first node; a processing module for controlling the terminal according to the return information. Optionally, the above-mentioned transceiver module is used to execute the steps related to "receiving the return information sent by the first node" executed by the second node 102 in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module is used to execute the steps related to "controlling the terminal according to the return information" executed by the second node 102 in any of the above methods, which will not be repeated here.

[0359] Figure 8c is a schematic diagram of the structure of the third node proposed in an embodiment of the present disclosure. As shown in Figure 8b, the third node includes a transceiver module configured to send feedback information to the first node, where the feedback information is used to control the terminal. Optionally, the transceiver module is configured to execute the steps related to "sending feedback information to the first node" performed by third node 103 in any of the above methods, and will not be further described here.

[0360] Figure 9a is a schematic diagram of the structure of a communication device 9100 proposed in an embodiment of the present disclosure. Communication device 9100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 9100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0361] As shown in Figure 9a, the communication device 9100 includes one or more processors 9101. Processor 9101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. Processor 9101 is used to call instructions to enable the communication device 9100 to perform any of the above methods.

[0362] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 may be located outside the communication device 9100.

[0363] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the communication steps such as sending and receiving in the above method are performed by the transceiver 9103, and the other steps are performed by the processor 9101.

[0364] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0365] Optionally, the communication device 9100 further includes one or more interface circuits 9104, which are connected to the memory 9102. The interface circuits 9104 can be used to receive signals from the memory 9102 or other devices, and can be used to send signals to the memory 9102 or other devices. For example, the interface circuits 9104 can read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0366] The communication device 9100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 9a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0367] FIG9b is a schematic diagram of the structure of a chip 9200 according to an embodiment of the present disclosure. If the communication device 9100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 9200 shown in FIG9b , but the present disclosure is not limited thereto.

[0368] The chip 9200 includes one or more processors 9201, and the processor 9201 is used to call instructions so that the chip 9200 executes any of the above methods.

[0369] In some embodiments, chip 9200 further includes one or more interface circuits 9202, which are connected to memory 9203. Interface circuits 9202 can be used to receive signals from memory 9203 or other devices, and can be used to send signals to memory 9203 or other devices. For example, interface circuit 9202 can read instructions stored in memory 9203 and send the instructions to processor 9201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0370] In some embodiments, the chip 9200 further includes one or more memories 9203 for storing instructions. Alternatively, all or part of the memories 9203 may be located outside the chip 9200.

[0371] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 9100, causes the communication device 9100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0372] The present disclosure also provides a program product, which, when executed by the communication device 9100, enables the communication device 9100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0373] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0374] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program 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 program can be transmitted from one 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 can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0375] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0376] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0377] 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. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0378] 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.

[0379] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure 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 disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A backhaul method, characterized in that: The method is performed by a first node, and includes: Determine the return information; The feedback information is sent to the second node, wherein the feedback information is used to control the terminal.

2. The method according to claim 1, characterized in that: The determined return information includes at least one of the following: receiving the feedback information from the third node; Monitoring a delay of a data packet transmitted between the terminal and the first node to determine the return information; The return information is determined based on network operation, administration and maintenance (OAM) function configuration.

3. The method according to claim 2, characterized in that The receiving the feedback information from the third node comprises at least one of the following: Receive a first message from the third node, wherein the first message carries the backhaul information, and the first message is used to provide a signaling service between the first node and the third node, wherein the first node is a centralized unit gNB-CU of a base station, and the third node is a distributed unit gNB-DU of a base station, or the first node is a centralized unit IAB-donor-CU of an integrated access and backhaul termination node, and the third node is an IAB-DU in an integrated access and backhaul node IAB-node; A second message is received from the third node, wherein the second message carries the return information, and the second message is used to provide signaling services between nodes of the wireless access network NG-RAN, the first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

4. The method according to any one of claims 1 to 3, characterized in that The sending the return information to the second node comprises: Sending the return information to the second node through a non-terminal related message; or The return information is sent to the second node through a terminal-related message.

5. The method according to claim 4, characterized in that The first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is a NGAP message.

6. The method according to any one of claims 4 to 5, characterized in that The first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

7. The method according to any one of claims 1 to 6, characterized in that The second node is used to perform at least one of access control, mobility management, and quality of service (QoS) control on the terminal according to the return information.

8. The method according to any one of claims 1 to 7, characterized in that The feedback information includes at least one of the following: The type of the response; The type of satellite used for the return transmission; Return delay information; Returned satellite ephemeris information; Returned satellite assistance information; The cell information associated with the returned information.

9. A backhaul method, characterized in that: The method is performed by the second node, and the method includes: Receiving the feedback information sent by the first node; The terminal is controlled according to the returned information.

10. The method according to claim 9, characterized in that The receiving the return information sent by the first node includes: Receiving the feedback information sent by the first node through a non-terminal related message; or The return information sent by the first node is received through the terminal-related message.

11. The method according to claim 10, characterized in that The first node is a base station gNB, the second node is an access and mobility management function AMF network element, and the non-terminal related message or the terminal related message is a NGAP message.

12. The method according to any one of claims 10 to 11, characterized in that The first node is a base station gNB, the second node is a session management function SMF network element, and the terminal-related message includes an NGAP message related to the PDU session.

13. The method according to claim 12, characterized in that The controlling the terminal according to the returned information includes: At least one of access control, mobility management, and quality of service (QoS) control is performed on the terminal according to the returned information.

14. The method according to any one of claims 9 to 13, characterized in that The feedback information includes at least one of the following: The type of the response; The type of satellite used for the return transmission; Return delay information; Returned satellite ephemeris information; Returned satellite assistance information; Cell information associated with the terminal.

15. A backhaul method, characterized in that: The method is performed by a third node, and includes: Sending feedback information to the first node, The feedback information is used to control the terminal.

16. The method according to claim 15, characterized in that The sending of the feedback information to the first node includes at least one of the following: Send a first message to the first node, wherein the first message carries the backhaul information, and the first message is used to provide a signaling service between the first node and the third node, wherein the first node is a centralized unit gNB-CU of a base station, and the third node is a distributed unit gNB-DU of a base station, or the first node is a centralized unit IAB-donor-CU of an integrated access and backhaul termination node, and the third node is an IAB-DU in an integrated access and backhaul node IAB-node; A second message is sent to the first node, wherein the second message carries the return information, and the second message is used to provide signaling services between nodes of the wireless access network NG-RAN, the first node is the IAB-donor-CU of the IAB-DU in the IAB-node, and the third node is the IAB-donor-CU of the IAB mobile terminal IAB-MT.

17. The method according to claim 15 or 16, characterized in that The feedback information includes at least one of the following: The type of the response; The type of satellite used for the return transmission; Return delay information; Returned satellite ephemeris information; Returned satellite assistance information; Cell information associated with the terminal.

18. A first node, characterized in that: include: A processing module, used to determine the returned information; The transceiver module is used to send the feedback information to the second node, wherein the feedback information is used to control the terminal.

19. A second node, characterized in that: include: A transceiver module, used for receiving the return information sent by the first node; The processing module is used to control the terminal according to the feedback information.

20. A third node, characterized in that: include: A transceiver module, used to send feedback information to the first node, The feedback information is used to control the terminal.

21. A communication device, wherein: include: Transceiver; Memory; A processor is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer executable instructions on the memory, and can implement any one of the methods of claims 1-17.

22. A computer storage medium, wherein: The computer storage medium stores computer executable instructions; after the computer executable instructions are executed by the processor, the method described in any one of claims 1 to 17 can be implemented.

23. A communication system, characterized in that: It includes a first node, a second node, and a third node, wherein: The first node is configured to perform the method according to any one of claims 1 to 8; The second node is configured to perform the method according to any one of claims 9 to 14; The third node is configured to perform the method according to any one of claims 15-17.

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