Communication method, communication device, communication system and storage medium

Abstract

The invention provides a communication method, communication equipment, a communication system and a storage medium, and the method comprises the steps: transmitting first information to a first network function through a backhaul path, and enabling the first network function to determine the backhaul path address information of a mobile base station with wireless backhaul through the address information of a data packet of the first information. According to the method disclosed by the invention, stable communication between the first network function and the mobile base station with wireless backhaul is ensured, and the communication efficiency is improved.

Description

Communication method, communication device, communication system, storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, a communication device, a communication system and a storage medium. BACKGROUND

[0002] Mobile gNB with wireless access backhaul (MWAB) refers to a mobile base station acting as a next generation base station (gNB) for other terminals and providing access to a network (such as a 5th generation mobile communication system (5G) network), that is, the MWAB provides a 5G new radio (NR) access link for the terminal, and uses an NR wireless connection to a 5G core (5GC) through an Internet Protocol (IP) connection (i.e., a backhaul path) provided by a protocol data unit (PDU) session. The protocol data unit session for establishing the backhaul path can be referred to as a backhaul protocol data unit (BH PDU) session. Optionally, the BH PDU session is established through an NG-RAN cell in which the mobile base station can reside. The BH PDU session can be provided by a terrestrial network or a non-terrestrial network. Such a mobile base station can be installed on a moving vehicle and provide services for users inside or outside (or entering / leaving the vehicle).

[0003] SUMMARY

[0004] The present disclosure provides a communication method, a communication device, a communication system and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, executed by a mobile base station with wireless backhaul, comprising:

[0006] sending first information to a first network function through a backhaul path, address information of a data packet of the first information being used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, executed by a first network function, comprising:

[0008] The mobile base station with wireless backhaul receives first information sent by the backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0009] According to a third aspect of the embodiments of the present disclosure, a communication method is provided, used in a communication system, the communication system comprising a mobile base station with wireless backhaul and a first network function, the method comprising:

[0010] The mobile base station with wireless backhaul sends first information to the first network function through a backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0011] The first network function receives the first information sent by the mobile base station with wireless backhaul through the backhaul path.

[0012] According to a fourth aspect of the embodiments of the present disclosure, a mobile base station with wireless backhaul is provided, comprising:

[0013] The transceiver module is configured to send first information to the first network function through a backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0014] According to a fifth aspect of the embodiments of the present disclosure, a first network function is provided, comprising:

[0015] The transceiver module is configured to receive first information sent by the mobile base station with wireless backhaul through the backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0016] According to a sixth aspect of the embodiments of the present disclosure, a communication device is provided, comprising:

[0017] One or more processors;

[0018] The processor is configured to invoke instructions to cause the communication device to perform the communication method according to any one of the first aspect to the second aspect.

[0019] According to a seventh aspect of the embodiments of the present disclosure, a communication system is provided, comprising a mobile base station with wireless backhaul and a first network function, wherein the mobile base station with wireless backhaul is configured to implement the communication method according to the first aspect, and the first network function is configured to implement the communication method according to the second aspect.

[0020] According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided, and the storage medium stores instructions. When the instructions are executed on a communication device, the communication device performs the communication method according to any one of the first aspect to the second aspect.

[0021] According to a ninth aspect of the embodiments of the present disclosure, a program product is provided. When the program product is executed on a communication device, the communication device performs the communication method according to the first aspect, the optional implementation of the first aspect, the second aspect, or the optional implementation of the second aspect.

[0022] According to a tenth aspect of the embodiments of the present disclosure, a computer program is provided. When the computer program is executed on a computer, the computer performs the communication method according to the first aspect, the optional implementation of the first aspect, the second aspect, or the optional implementation of the second aspect.

[0023] It can be understood that the terminal, the network device, the communication device, the communication system, the storage medium, the program product, and the computer program are all used to execute the method provided by the embodiments of the present disclosure. Therefore, the beneficial effects achieved by the above can refer to the beneficial effects in the corresponding method, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, wherein:

[0025] FIG. 1A is a schematic diagram of the architecture of some communication systems according to an embodiment of the present disclosure;

[0026] FIG. 1B is a schematic diagram of the architecture of a UE accessing a network through a MWAB according to an embodiment of the present disclosure;

[0027] FIG. 1C is a flowchart of routing N2 messages between a MWAB and an AMF through a BH session (or BH PDU session) according to an embodiment of the present disclosure;

[0028] FIG. 2 is a flowchart of a communication method according to another embodiment of the present disclosure;

[0029] FIG. 3 is a flowchart of a communication method according to another embodiment of the present disclosure;

[0030] FIG. 4 is a flowchart of a communication method according to another embodiment of the present disclosure;

[0031] FIG. 5A is a flowchart of a communication method according to another embodiment of the present disclosure;

[0032] FIG. 5B is a flowchart of a communication method according to another embodiment of the present disclosure;

[0033] FIG. 6A is a structural diagram of a mobile base station with wireless backhaul according to an embodiment of the present disclosure;

[0034] FIG. 6B is a structural diagram of a first network function according to an embodiment of the present disclosure;

[0035] FIG. 7A is a structural diagram of a communication device according to an embodiment of the present disclosure;

[0036] FIG. 7B is a structural diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] Embodiments of the present disclosure provide a communication method, a communication device, a communication system, and a storage medium. In some embodiments, the communication method can be replaced by information processing method, information sending method, information receiving method, and the like, the communication device can be replaced by information processing device, information sending device, information receiving device, and the like, and the information processing system, the communication system, the information sending system, and the information receiving system can be replaced by each other.

[0038] Embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps in different embodiments or part or all of the steps in different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments arbitrarily.

[0039] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments are consistent if there is no special description and logical conflict, and can be referred to each other, and the technical features in different embodiments can be combined to form a new embodiment according to the logical relationship between them.

[0040] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and not as a limitation on the present disclosure.

[0041] In the embodiments of the present disclosure, an element represented in singular form, such as "a", "an", "the", "said", "the aforementioned", "the foregoing", "this", and the like, unless otherwise specified, can represent "one and only one", or can represent "one or more", "at least one", and the like. For example, in the case of using an article such as "a", "an", "the" in English, the noun after the article can be understood as a singular expression, or can be understood as a plural expression.

[0042] In the embodiments of the present disclosure, "plurality" refers to two or more.

[0043] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", and the like can be replaced with each other.

[0044] In the embodiments of the present disclosure, the description manner such as "at least one of A, B, C, and the like", "A and / or B and / or C, and the like" includes any one of A, B, C, and the like existing alone, and also includes any combination of any number of A, B, C, and the like, each of which can exist alone; for example, "at least one of A, B, C" includes the cases of A alone, B alone, C alone, A and B in combination, A and C in combination, B and C in combination, A and B and C in combination; for example, A and / or B includes the cases of A alone, B alone, and the combination of A and B.

[0045] In some embodiments, the description manner such as "A in one case, and B in another case", "in response to case A, in response to case B", and the like, according to the case, can include the following technical solutions: A is executed regardless of B, that is, A in some embodiments; B is executed regardless of A, that is, B in some embodiments; A and B are selectively executed, that is, A and B are selected from A and B to be executed in some embodiments; A and B are both executed, that is, A and B in some embodiments. When there are more branches such as A, B, C, and the like, it is similar to the above.

[0046] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, sequence, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments in the context of the description, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or sequence between "fields", and "first" and "second" do not limit whether the "fields" modified by them are in the same message or not, nor limit the sequence of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different; for another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0047] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0048] In some embodiments, the terms of "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0049] In some embodiments, the terms of "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 lower than", "above" and the like can be replaced with each other, and the terms of "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", "below" and the like can be replaced with each other.

[0050] In some embodiments, an apparatus or the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments, and the terms "apparatus", "equipment", "device", "circuit", "network function", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0051] In some embodiments, a "network" can be interpreted as an apparatus (for example, an access network device, a core network device, and the like) included in the network.

[0052] 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 can be replaced with each other.

[0053] 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," and so on can be replaced with each other.

[0054] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (for example, also referred to as device-to-device (D2D), vehicle-to-everything (V2X), and so on), embodiments of the present disclosure can also be applied. In this case, a structure in which a terminal has all or part of the functions of an access network device can also be provided. Furthermore, the language of "uplink," "downlink," and so on can also be replaced with language corresponding to communication between terminals (for example, "side"). For example, an uplink channel, a downlink channel, and so on can be replaced with a side channel, and an uplink, a downlink, and so on can be replaced with a side link.

[0055] In some embodiments, a terminal can be replaced with an access network device, a core network device, or a network device. In this case, a structure in which an access network device, a core network device, or a network device has all or part of the functions of a terminal can also be provided.

[0056] In some embodiments, the data, information, etc. can be obtained in compliance with the laws and regulations of the country where the location is situated.

[0057] In some embodiments, the data, information, etc. can be obtained after obtaining the consent of the user.

[0058] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0059] The correspondence shown in each table in the present disclosure can be configured or predefined. The values of the information in each table are merely examples, and other values can be configured, and the present disclosure is not limited. When configuring the correspondence between the information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows in the table in the present disclosure can also not be configured. For another example, the above table can be appropriately deformed, adjusted, etc., such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names understandable by the communication device, and the values or representations of the parameters can also use other values or representations understandable by the communication device. The above tables can also use other data structures when implemented, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, etc.

[0060] The predefinition in the present disclosure can be understood as defining, predefining, storing, pre-storing, pre-negotiating, pre-configuring, solidifying, or pre-burning.

[0061] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1A, the communication system 100 can include a MWAB, a first network function.

[0062] Optionally, the MWAB can include a base station part of the MWAB (MWAB-gNB) and / or a terminal part of the MWAB (MWAB-UE).

[0063] In some embodiments, the base station described above is, for example, a node or device that accesses a terminal to a wireless network, and the base station can include at least one of an evolved node B (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0064] In some embodiments, the terminal (or called: User Equipment (UE)) described above includes, for example, at least one of a mobile phone, a wearable device, an Internet of Things (IoT) device, a Narrow Band Internet of Things (NB-IOT) device, a communication-capable car, a smart car, a tablet (Pad), 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, a wireless terminal device in a smart home, but is not limited thereto.

[0065] Optionally, the first network function described above can be a network function in a core network, for example, can be an Access and Mobility Management Function (AMF) network function or a User Plane Function (UPF) network function.

[0066] In some embodiments, the terminal (or UE) described above can access the network through the MWAB, and FIG. IB is a schematic diagram of an architecture in which the UE accesses the network through the MWAB according to an embodiment of the present disclosure. As shown in FIG. IB, the UE can be connected to the MWAB-gNB, and the MWAB-gNB can access the 5GC through the transmission path provided by the PDU session of the MWAB-UE, so that the UE can successfully access the network through the MWAB. In some embodiments, the PDU session of the MWAB-UE, which provides the transmission path for the network access (signaling interface access, such as N2 access between the MWAB-gNB and the AMF, or user plane access, such as N3 access between the MWAB-gNB and the UPF) of the MWAB-gNB, can be configured with a dedicated Data Network Name (DNN) or Single Network Slice Selection Assistance Information (S-NSSAI) or a common DNN / S-NSSAI with other application services. In some embodiments, the transmission path for the network access of the MWAB-gNB of the MWAB-UE can be referred to as a backhaul path, and the PDU session of the transmission path for the network access of the MWAB-gNB of the MWAB-UE can be referred to as a backhaul PDU session (BH PDU session).

[0067] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. It can be known by those skilled in the art that, with the evolution of system architecture and the appearance of new service scenarios, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0068] The following embodiments of the present disclosure can be applied to the communication system 100 illustrated in FIG. 1A, or part of the subjects, but are not limited thereto. The subjects illustrated in FIG. 1A are examples, and the communication system can include all or part of the subjects in FIG. 1A, or other subjects other than those in FIG. 1A. The number and form of each subject is arbitrary, and the connection relationship between the subjects is an example. The subjects can not be connected or can be connected, and the connection can be in any manner, can be direct connection or indirect connection, and can be wired connection or wireless connection.

[0069] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0070] Optionally, FIG. 1C is a flowchart of routing N2 messages between the MWAB and the AMF through a BH session (or referred to as a BH PDU session) according to an embodiment of the present disclosure. As shown in FIG. 1C, the following steps can be included:

[0071] 1. The MWAB-UE establishes a PDU session to access an Operations and Maintenance (OAM) server, and when the MWAB-UE establishes the PDU session to access the OAM server, the OAM can configure the MWAB-gNB with the address of the AMF to which the MWAB-gNB is to connect based on the location of the MWAB.

[0072] 2. The MWAB-gNB requests connection access to the AMF via its interface with the MWAB-UE, and can trigger the MWAB-UE to establish a BH session with a dedicated Data Network Name (DNN) and / or dedicated Single Network Slice Selection Assistance Information (S-NSSAI) based on local configuration or User Equipment Routing Selection Policy (URSP).

[0073] 3. The MWAB generates a UL N2 message (e.g., NG Setup Request message) with a source IP address that is an IP address associated with the N2 backhaul connection provided by the MWAB-UE and a target IP address that is the AMF address.

[0074] 4. The UL N2 message as UL data is routed to the PSA of the BH session.

[0075] 5. The PSA of the BH session routes the N2 message to the AMF.

[0076] 6. The AMF generates a DL N2 message (e.g., NG Setup Response message) with a source IP address that is the AMF address and a target IP address that is the IP address of the MWAB-UE.

[0077] 7. The DL N2 message is routed to the PSA of the BH session.

[0078] 8. The PSA of the BH session routes the DL N2 message to the MWAB.

[0079] Further, in some embodiments, the MWAB-gNB indicates in the NG Setup Request message to the AMFs that the NG Setup Request message is configured to establish an NG and that the NG Setup Request message is from the MWAB-gNB, and the AMF stores this information.

[0080] However, in the related art method, how to manage the backhaul path of the MWAB-gNB to support the terminal to access via the N2 of the MWAB-gNB is not provided, and based on this, the present disclosure provides a communication method.

[0081] FIG. 2 is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2, the embodiment of the present disclosure relates to a communication method for the communication system 100, and the above method comprises the following steps:

[0082] In step 2101, the MWAB sends an interface establishment request message to the first network function.

[0083] Optionally, the MWAB can send the interface establishment request message to the first network function through a backhaul path. The first network function can be, for example, an AMF network function or a UPF network function. The relationship between the MWAB, the first network function, and the backhaul path will be described in detail below.

[0084] In some embodiments, the MWAB can include a MWAB-gNB and a MWAB-UE, the MWAB-gNB and the MWAB-UE can communicate with each other, the MWAB-UE can establish a BH session (or a BH PDU session), and can communicate with the first network function through the BH session. Thus, the MWAB-gNB can access the first network function through the BH session of the MWAB-UE to communicate with the first network function. In some embodiments, the "backhaul path" can refer to the backhaul path provided by the BH session of the MWAB-UE, or can refer to the user plane path of the BH session.

[0085] In some embodiments, when the MWAB sends the interface establishment request message to the first network function, the MWAB-gNB and the MWAB-UE usually interact internally to send the interface establishment request message to the first network function. Optionally, the specific process can include the following steps:

[0086] In step a, the MWAB-UE is registered in the network, and the MWAB-UE is configured as a MWAB, and the MWAB-gNB is configured for wireless access.

[0087] In step b, the MWAB-gNB obtains configuration information for wireless access through an OAM server.

[0088] Optionally, the configuration information can be used to determine the first network function to be accessed by the MWAB-gNB. Optionally, the MWAB-gNB can report the location of the MWAB to the OAM, so that the OAM configures the first network function to be accessed by the MWAB-gNB based on the location of the MWAB.

[0089] In step c, the MWAB-UE determines a transmission path for accessing the first network function through a BH session, i.e., a backhaul path for accessing the first network function.

[0090] Optionally, if there is an existing BH session for the MWAB-UE, the MWAB-UE can modify the BH session to determine a connection to the first network function, i.e., a backhaul path, or directly use a user plane path of the existing BH session as the connection to the first network function, i.e., a backhaul path; if there is no suitable BH session, the MWAB-UE can provide the connection to the first network function, i.e., a backhaul path, by establishing a BH session for accessing the first network function.

[0091] Step d, the MWAB-gNB sends an interface establishment request message to the MWAB-UE, the MWAB-UE encapsulates the interface establishment request message into a data packet, and further encapsulates the data packet of the interface establishment request message into uplink data and sends the uplink data to the first network function via a backhaul path. Optionally, the MWAB-gNB encapsulates the interface establishment request message into a data packet according to backhaul path information of the MWAB-UE, and sends the data packet to the first network function via the backhaul path.

[0092] Optionally, a source address of the data packet of the interface establishment request message can be backhaul path address information (or also referred to as: backhaul path information) of the MWAB, and a target address of the data packet of the interface establishment request message can be address information of the first network function. In some embodiments, the backhaul path address information of the MWAB can be an address of the MWAB on a backhaul path between the MWAB and the first network function. In some embodiments, the backhaul path address information of the MWAB can be, for example, address information of a BH session of the MWAB-UE. Optionally, the address information of the BH session can include at least one of the following:

[0093] an Internet Protocol (IP) address of the BH session of the MWAB-UE;

[0094] an IP prefix of the BH session of the MWAB-UE;

[0095] a port address (such as: port number) of the BH session of the MWAB-UE.

[0096] Optionally, the address information of the first network function can include at least one of an IP address, an IP prefix, and a port address of the first network function.

[0097] Optionally, in some embodiments, the interface establishment request message can include second information, which can be used to indicate that the interface establishment request message comes from the MWAB, or the second information can be used to indicate that the interface establishment request message comes from the MWAB-gNB. Optionally, the second information can include at least one of the following:

[0098] a first indication, the first indication being used to indicate that the interface establishment request message is from the MWAB-gNB;

[0099] access type information of the MWAB (e.g., access type information of the MWAB-gNB);

[0100] location information of the MWAB (e.g., location information of the MWAB-gNB), which may, for example, be latitude and longitude coordinates, a Global Positioning System (GPS) location, or the like.

[0101] Optionally, the above-mentioned first indication can be understood as an explicit indication to explicitly indicate that the interface establishment request message is from the MWAB-gNB.

[0102] Optionally, the above-mentioned access type information and location information can be implicit indication. For example, it can be agreed in advance that which access type of base station is the MWAB-gNB, or a new access type can be added for the MWAB-gNB, or it can be agreed in advance that which location of base station is the MWAB-gNB. Thus, when the base station is the MWAB-gNB, the access type information and / or the location information of the MWAB-gNB can be included in the interface establishment request message sent by the base station to implicitly indicate that the interface establishment request message is from the MWAB-gNB. Alternatively, in other embodiments, the above-mentioned first indication and access type information and location information can not be included in the interface establishment request message. In this case, it can be pre-configured in the first network function which base stations are the MWAB-gNB. Thus, when the first network function receives the interface establishment request message and determines the base station that sends the interface establishment request message, the first network function can determine whether the interface establishment request message is from the MWAB-gNB in combination with the local configuration.

[0103] In some embodiments, the above-mentioned interface establishment request message can be an NG establishment request message, or can be other interface establishment request messages, which are not limited in the present disclosure.

[0104] Optionally, in some embodiments, the above-mentioned interface establishment request message can further include identification information of the MWAB-gNB to identify which MWAB-gNB the interface establishment request message is from. The identification information of the MWAB-gNB may, for example, be a global RAN node ID. Optionally, it can be agreed that certain specific identified base stations are the MWAB-gNB.

[0105] It should be noted that in some embodiments, the data packet of the interface establishment request message may pass through the UPF of the backhaul path during transmission from the MWAB to the first network function, and the UPF may use the NAT function to remap the source address of the data packet when transmitting the data to the first network function, so that the source address of the data packet of the interface establishment request message sent by the MWAB may be different from the source address of the data packet of the interface establishment request message received by the first network function, but both of them indicate the same backhaul path address information. For example, assuming that the source address of the data packet of the interface establishment request message sent by the MWAB is address information #1, after the interface establishment request message is transmitted to the UPF of the backhaul path, the UPF remaps the source address from address information #1 to address information #2 before transmitting it to the first network function, and the source address of the data packet of the interface establishment request message received by the first network function is address information #2, wherein address information #1 and address information #2 indicate the same backhaul path address information, and address information #1 and address information #2 can be the same or different; wherein address information #1 can be the information used by the MWAB to indicate the backhaul path address information, and address information #2 can be the information used by the first network function to indicate the backhaul path address information. Optionally, the destination address of the data packet can also be remapped, and the principle is the same as that of the source address, which will not be described here.

[0106] Optionally, in some embodiments, the interface establishment request message described above can be an N2 message.

[0107] Optionally, the MWAB can send other new initial interface interaction information to the first network function through the backhaul path instead of sending the interface establishment request message described above, so as to trigger the first network function to record the backhaul path address information and further use the corresponding backhaul path for interaction between the MWAB and the first network function.

[0108] Step 2102, the first network function records the source address of the data packet of the interface establishment request message as the backhaul path address information of the MWAB.

[0109] Optionally, the first network function can first determine whether the interface establishment request message is from the MWAB-gNB, and then record the source address of the data packet of the interface establishment request message as the backhaul path address information of the MWAB when the interface establishment request message is from the MWAB-gNB.

[0110] In some embodiments, the first network function determining whether the interface establishment request message is from the MWAB-gNB can comprise: when the first indication is included in the interface establishment request message, determining that the interface establishment request message is from the MWAB-gNB; or, if the access type information of the MWAB-gNB is included in the interface establishment request message, the first network function can determine the access type of the base station pre-agreed as the MWAB-gNB based on the protocol agreement, and determine whether the access type information of the MWAB-gNB included in the interface establishment request message is the pre-agreed access type, if yes, determine that the interface establishment request message is from the MWAB-gNB, otherwise, determine that the interface establishment request message is not from the MWAB-gNB; or, if the location information of the MWAB-gNB is included in the interface establishment request message, the first network function can determine the location information of the base station pre-agreed as the MWAB-gNB based on the protocol agreement, and determine whether the location information of the MWAB-gNB included in the interface establishment request message is the pre-agreed location information, if yes, determine that the interface establishment request message is from the MWAB-gNB, otherwise, determine that the interface establishment request message is not from the MWAB-gNB; or, which specific identified base stations are the MWAB-gNBs can be pre-configured locally in the first network function, at this time, the first network function can first determine which base station sends the interface establishment request message, then determine which base stations are the MWAB-gNBs in combination with the local configuration, and determine whether the base station sending the interface establishment request message is the base station that can be the MWAB-gNB pre-configured locally, if yes, determine that the interface establishment request message is from the MWAB-gNB, otherwise, determine that the interface establishment request message is not from the MWAB-gNB.

[0111] Optionally, in some embodiments, when the first network function determines that the interface establishment request message is from the MWAB-gNB, the first network function can record this locally, and for subsequent N2 interactions other than the interface establishment request message from the same MWAB-gNB, the first network function can directly determine that it is from the MWAB-gNB based on the local record; or, the first indication, the access type information, the location information, etc. described above can also be included in the subsequent N2 interaction, and the first network function can determine that the subsequent N2 interaction is from the MWAB-gNB based on the first indication, the access type information, and the location information; or, the first network function can also determine that the subsequent N2 interaction is from the MWAB-gNB based on the local configuration again.

[0112] Step 2103, the first network function sends an interface establishment response to the MWAB.

[0113] Optionally, the interface establishment response can be encapsulated as downlink data and sent to the MWAB-UE through the backhaul path session. Optionally, the source address of the interface establishment response sent by the first network function can be the address information of the first network function, and the target address can be the source address of the data packet of the interface establishment request message received by the first network function.

[0114] Optionally, the interface establishment response can be an N2 message.

[0115] Step 2104, the MWAB and the first network function communicate with each other through the backhaul path based on the backhaul path address information.

[0116] Optionally, in some embodiments, the source address of the uplink data packet sent by the MWAB through the backhaul path is the address of the backhaul path, i.e., the address information of the MWAB-UE of the backhaul session of the MWAB-UE, and the target address is the address information of the first network function.

[0117] Optionally, in some embodiments, the MWAB can send uplink information (such as an uplink data packet) to the first network function through the backhaul path, and the uplink information satisfies at least one of the following:

[0118] The internal source address encapsulated in the uplink information sent by the MWAB is the address information of the MWAB; optionally, the address information of the MWAB may, for example, be the address information of the MWAB-gNB, such as the IP address, IP prefix, port address, etc. of the MWAB-gNB;

[0119] The source address in the uplink information sent by the MWAB is replaced by the address of the backhaul path (i.e., the backhaul path address information described above);

[0120] The source address in the uplink information sent by the MWAB is set to the address of the backhaul path.

[0121] Optionally, in some embodiments, the MWAB can receive downlink information (such as a downlink data packet) sent by the first network function through the backhaul path based on the address of the backhaul path, and the downlink information satisfies at least one of the following:

[0122] The internal target address encapsulated in the downlink information received by the MWAB is the address information of the MWAB; optionally, the address information of the MWAB may, for example, be the address information of the MWAB-gNB, such as the IP address, IP prefix, port address, etc. of the MWAB-gNB;

[0123] The target address of the downlink information received by the MWAB is the address of the backhaul path.

[0124] Optionally, in some embodiments, the first network function can send downlink information to the MWAB through the backhaul path based on the address of the backhaul path recorded by the first network function, and the downlink information can satisfy at least one of the following:

[0125] The internal target address encapsulated in the downlink information sent by the first network function is address information of the MWAB.

[0126] The target address in the downlink information sent by the first network function is replaced by the address of the backhaul path recorded by the first network function, such as the source address of the data packet of the interface establishment request message received by the first network function.

[0127] The target address in the downlink information sent by the first network function is set to the address of the backhaul path recorded by the first network function, such as the source address of the data packet of the interface establishment request message received by the first network function.

[0128] Optionally, in some embodiments, the first network function can receive uplink information sent by the MWAB through the backhaul path based on the address of the backhaul path recorded by the first network function, such as the source address of the data packet of the interface establishment request message received by the first network function, and the uplink information can satisfy at least one of the following:

[0129] The internal source address encapsulated in the uplink information received by the first network function is address information of the mobile base station with wireless backhaul.

[0130] The source address of the uplink information received by the first network function is the address of the backhaul path recorded by the first network function, such as the source address of the data packet of the interface establishment request message received by the first network function.

[0131] It should be noted that in some embodiments, the MWAB-gNB described above can be connected to different first network functions through the backhaul path, such as the MWAB-gNB can be connected to AMF#1 and AMF#2 through the backhaul path respectively, then the MWAB-gNB can send interface establishment request messages to different first network functions (such as AMF#1 and AMF#2) to be accessed through the backhaul path respectively, at the same time, different first network functions can also send interface establishment responses to the MWAB-gNB respectively, and the MWAB-gNB can also communicate with different first network functions through the backhaul path based on the backhaul path address information.

[0132] Step 2105, the backhaul path address information of the MWAB is changed from the first address information to the second address information, and the MWAB sends an update message to the first network function.

[0133] Optionally, the "backhaul path address information changes from the first address information to the second address information" can refer to any change of the backhaul path address information, for example, can refer to the first change after the MWAB accesses the first network function, at this time, the first address information is the source address of the data packet of the interface establishment request message sent by the MWAB in the step 2101; or can refer to the second change after the MWAB accesses the first network function, at this time, the first address information can be the backhaul path address information after the first change; or can refer to the third change after the MWAB accesses the first network function, at this time, the first address information can be the backhaul path address information after the second change, and so on.

[0134] Optionally, the update message can be used to indicate that the backhaul path address information of the MWAB changes and / or the backhaul path address information of the MWAB before the change.

[0135] Optionally, the update message can be sent to the first network function through the backhaul path after the address information changes, and the source address of the update message can be the second address information (i.e., the changed backhaul path address information), and the target address of the update message can be the address information of the first network function. Similarly, referring to the foregoing step 2101, if the source address of the update message sent from the MWAB to the first network function is remapped from the second address information to the fourth address information, the source address of the update message received by the first network function is no longer the second address information, but the fourth address information.

[0136] In some embodiments, the update message can include at least one of the following:

[0137] A second indication, the second indication being used to indicate that the backhaul path address information of the mobile base station with wireless backhaul changes;

[0138] The first address information;

[0139] The identification information of the MWAB-gNB; the identification information of the MWAB-gNB can be a global RAN node ID;

[0140] The identification information of the MWAB-UE; the identification information of the MWAB-UE can include at least one of the UE ID of the MWAB-UE, the generic public subscription identifier (GPSI) of the MWAB-UE, and the generic public subscription identifier (GPSI) of the MWAB-UE for establishing the backhaul path.

[0141] a data network name (DNN) of the backhaul path; the DNN of the backhaul path may, for example, be a DNN of the BH session;

[0142] a single network slice selection assistance information (S-NSSAI) of the backhaul path; the S-NSSAI of the backhaul path may, for example, be a S-NSSAI of the BH session;

[0143] a third indication, which may be used to indicate the backhaul path.

[0144] Optionally, the third indication described above may be a user plane connection of the backhaul path; the third indication may, for example, be a path ID of the backhaul path, or be referred to as a connection ID, a BH connection ID, a BH session ID, or other names, which may be determined by the MWAB-gNB or the first network function for each backhaul path. In some embodiments, when the third indication is determined by the first network function, the first network function also needs to send the third indication to the MWAB-gNB, so that the MWAB-gNB can know the third indication, and thus the MWAB-gNB can indicate the backhaul path whose address information is changed to the first network function based on the known third indication. In other embodiments, when the third indication is determined by the MWAB-gNB, the MWAB-gNB also needs to send the third indication to the first network function before sending the update message, so that the first network function can know the third indication, and thus the first network function can determine the backhaul path whose address information is changed based on the known third indication. In other embodiments, when the third indication is determined by the first network function, the third indication may also be third address information, which may be understood as follows: when the source address of the data packet sent by the MWAB-gNB is the first address information, the source address of the data packet received by the first network function is the third address information, that is, the first address information and the third address information indicate the same backhaul path address information, both of which indicate the backhaul path address information before the change, but the third address information is the information used by the first network function to indicate the backhaul path address information before the change, and the first address information is the information used by the MWAB to indicate the backhaul path address information before the change, and the first address information and the third address information may be the same or different.

[0145] Optionally, the first address information, the identifier information of the MWAB-gNB, the identifier information of the MWAB-UE, the DNN of the backhaul path, the S-NSSAI of the backhaul path, and the third indication can be used to inform the first network function which address information of which backhaul path has been changed.

[0146] Optionally, in some embodiments, the first address information is mapped to the third address information for the first network function, that is, the first network function only knows the third address information but does not know the first address information. When the first address information is different from the third address information, the first network function does not know which backhaul path the first address information corresponds to, and thus the first network function cannot determine which address information of which backhaul path has been changed based on the first address information. In this case, the first network function needs to determine which address information of which backhaul path has been changed based on the identifier information of the MWAB-gNB, the identifier information of the MWAB-UE, the DNN of the backhaul path, the S-NSSAI of the backhaul path, and the third indication in the update message. Alternatively, the MWAB-gNB needs to send the third indication to the first network function before sending the update message, so that the first network function can know the third indication, and thus the first network function can determine the backhaul path whose address information has been changed based on the known third indication.

[0147] Optionally, in some embodiments, when a certain MWAB-gNB is connected to only one backhaul path, for example, a certain first network function is connected to only one backhaul path, the identifier information of the MWAB-gNB can uniquely identify the backhaul path for a certain first network function. In this case, the identifier information of the MWAB-gNB can uniquely identify which address information of which backhaul path has been changed. In other embodiments, when a certain MWAB-gNB is connected to multiple backhaul paths, for example, a certain first network function is connected to multiple backhaul paths, the identifier information of the MWAB-gNB cannot uniquely identify the backhaul path, or when the identifier information of the MWAB-gNB is changed, the identifier information of the MWAB-gNB cannot identify the backhaul path. In this case, the DNN of the backhaul path, the S-NSSAI of the backhaul path, and the third indication can be used to identify which address information of which backhaul path has been changed.

[0148] Optionally, in some embodiments, the identification information of the MWAB-UE can be different for different backhaul paths of the MWAB-UE, or the identification information of the MWAB-UE can be the same for different backhaul paths of the MWAB-UE, i.e., the MWAB-UE can correspond to only one identification information of the MWAB-UE. When the MWAB-UE corresponds to only one identification information of the MWAB-UE, only when the MWAB-gNB is connected with one backhaul path, the identification information of the MWAB-UE can uniquely identify the address information of the backhaul path; when the MWAB-gNB is connected with multiple backhaul paths, the one identification information of the MWAB-UE cannot uniquely identify the address information of which backhaul path has been changed. When the identification information of the MWAB-UE is different for different backhaul paths of the MWAB-UE, no matter how many backhaul paths the MWAB-UE is connected with, each identification information of the MWAB-UE can uniquely identify the address information of which backhaul path has been changed.

[0149] Optionally, the identification information of the MWAB-gNB, the identification information of the MWAB-UE, the DNN of the backhaul path, and the S-NSSAI of the backhaul path can be optionally included in the interface establishment request message of the foregoing step. If the third indication is determined by the MWAB-gNB, the third indication can also be optionally included in the interface establishment request message of the foregoing step, so that the first network function knows the third indication corresponding to each backhaul path, and thus when the MWAB-gNB includes the third indication in the update message, the first network function can determine which backhaul path has the changed address information based on the third indication.

[0150] Optionally, in some embodiments, when the MWAB-gNB sends the update message, if the MWAB-gNB currently has any N2 message to be sent to the first network function, the MWAB-gNB can send the current N2 message to be sent to the first network function as the update message. Alternatively, the MWAB-gNB can trigger a new N2 message as the update message. Optionally, the new N2 message can be a protocol existing N2 message, such as an error indication (ERROR INDICATION) or a RAN configuration update (RAN CONFIGURATION UPDATE), or the new N2 message can be a new N2 message different from the protocol existing N2 message.

[0151] Optionally, the specific operation steps of the MWAB sending the update message to the first network function can comprise: the MWAB-gNB sending the update message to the MWAB-UE, the MWAB-UE encapsulating the update message into a data packet, the source address of the data packet of the update message being the second address information, and the data packet of the update message being encapsulated into uplink data and sent to the first network function via the BH session.

[0152] Step 2106, the first network function sends an update response to the MWAB.

[0153] Optionally, the update response can be encapsulated into downlink data and sent to the MWAB-UE through the BH session. Optionally, the source address of the update response sent by the first network function can be the address information of the first network function, and the target address can be the fourth address information described above.

[0154] Step 2107, the MWAB and the first network function communicate with each other through the backhaul path based on the changed backhaul path address information.

[0155] Optionally, in some embodiments, the MWAB can send uplink information to the first network function through the backhaul path based on the second address information, and the uplink information satisfies at least one of the following:

[0156] The internal source address encapsulated in the uplink information is the address information of the MWAB;

[0157] The source address in the uplink information is replaced by the second address information;

[0158] The source address in the uplink information is set to the second address information.

[0159] Optionally, in some embodiments, the MWAB can receive downlink information sent by the first network function through the backhaul path based on the second address information, and the downlink information satisfies at least one of the following:

[0160] The internal target address encapsulated in the downlink information is the address information of the mobile base station with wireless backhaul;

[0161] The target address of the downlink information is the second address information.

[0162] Optionally, in some embodiments, the first network function can send downlink information to the MWAB through the backhaul path based on the fourth address information, and the downlink information can satisfy at least one of the following:

[0163] The internal target address encapsulated in the downlink information is the address information of the MWAB;

[0164] The target address in the downlink information is replaced by the fourth address information;

[0165] The target address in the downlink information is set as the fourth address information.

[0166] Optionally, in some embodiments, the first network function can receive uplink information sent by the MWAB through the backhaul path based on the fourth address information, and the uplink information can satisfy at least one of the following:

[0167] The internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul.

[0168] The source address of the uplink information is the fourth address information.

[0169] It should be noted that, in some embodiments, the MWAB-gNB described above can be connected to different first network functions through the backhaul path, for example, the MWAB-gNB can be connected to AMF#1 and AMF#2 through the backhaul path respectively, then the MWAB-gNB can send update messages to different first network functions (such as AMF#1 and AMF#2) through the backhaul path respectively, at the same time, different first network functions can also send update responses to the MWAB-gNB respectively, and the MWAB-gNB can also communicate with different first network functions through the backhaul path based on the changed backhaul path address information.

[0170] Step 2108, the MWAB performs a first operation with the first network function.

[0171] In some embodiments, when the change of the address information of the backhaul path triggers a change in the context information of the first terminal, the MWAB and the first network function can update the context information of the first terminal; optionally, the first terminal can be a terminal accessing the network through the MWAB (such as MWAB-gNB). In addition, the MWAB and the first network function can update the RAN UE NGAP ID for N2 access serving the first terminal based on the changed backhaul path address information, or can trigger the RAN CP relocation indication.

[0172] In some embodiments, the change of the address information of the backhaul path triggers the handover of the first terminal, and the MWAB and the first network function can perform the handover process of the first terminal; for example, if the NG-RAN node is distinguished by different backhaul path address information, when the backhaul path address information changes from the first address information to the second address information, the MWAB and the first network function can perform the following handover process: handover from the source NG-RAN node associated with the first address information to the target NG-RAN node associated with the second address information.

[0173] In some embodiments, the address information changed backhaul path is used for a UPF network function of the first terminal, and the MWAB and the first network function can change the user plane access connection information of the first terminal; for example, the MWAB and the first network function can change the access network side address information of the user plane path corresponding to the affected PDU session, such as updating the AN TNL information of the affected PDU session or updating the N3 interaction implemented by the updated backhaul path corresponding to the PDU session or updating the N3 interaction implemented by the updated backhaul path of the affected PDU session. Optionally, a PDU session resource modification indication (PDU SESSION RESOURCE MODIFY INDICATION) can be triggered to update the AN TNL information of the affected PDU session.

[0174] In the above embodiment, a communication method is provided, which is used for the first network function to record the backhaul path address information when communicating with the MWAB-gNB, so that the first network function can successfully communicate with the MWAB-gNB based on the backhaul path address information. At the same time, in some embodiments, when the backhaul path address information of the MWAB-gNB is changed, the MWAB-gNB sends an update message to the first network function to inform the first network function to synchronize the change of the backhaul path address information, so that the first network function and the MWAB-gNB can communicate based on the changed backhaul path address information, ensuring stable communication between the first network function and the MWAB-gNB and improving communication efficiency.

[0175] The communication method related to the embodiments of the present disclosure can include at least one of steps 2101-2108. For example, step 2101 can be implemented as an independent embodiment, step 2102 can be implemented as an independent embodiment, step 2103 can be implemented as an independent embodiment, and step 2101+S2102 can be implemented as an independent embodiment, but not limited thereto.

[0176] In the present embodiment or example, each step can be independent, arbitrarily combined or exchanged in order, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples.

[0177] FIG. 3 is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3, the embodiments of the present disclosure relate to a communication method for a mobile base station with wireless backhaul, and the above method comprises:

[0178] Step 3101, sending first information to a first network function through a backhaul path.

[0179] Optionally, address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0180] Optionally, the first information is an interface establishment request message, and a source address of a data packet of the interface establishment request message is the backhaul path address information of the mobile base station with wireless backhaul.

[0181] Optionally, the interface establishment request message comprises second information, and the second information is used to indicate that the interface establishment request message is from the mobile base station with wireless backhaul.

[0182] Optionally, the second information comprises at least one of the following:

[0183] a first indication, the first indication being used to indicate that the interface establishment request message is from the mobile base station with wireless backhaul;

[0184] access type information of the mobile base station with wireless backhaul;

[0185] location information of the mobile base station with wireless backhaul.

[0186] Optionally, the interface establishment request message is an NG establishment request message.

[0187] Optionally, the backhaul path address information of the mobile base station with wireless backhaul is changed from first address information to second address information, and the first information is an update message, the update message being used to indicate that the backhaul path address information of the mobile base station with wireless backhaul is changed and / or the changed backhaul path address information of the mobile base station with wireless backhaul, and a source address of a data packet of the update message is the second address information.

[0188] Optionally, the update message comprises at least one of the following:

[0189] a second indication, the second indication being used to indicate that the backhaul path address information of the mobile base station with wireless backhaul is changed;

[0190] the first address information;

[0191] identification information of a base station part of the mobile base station with wireless backhaul;

[0192] identification information of a terminal part of the mobile base station with wireless backhaul;

[0193] a data network name (DNN) of the backhaul path;

[0194] single-network slice selection assistance information (S-NSSAI) of the backhaul path;

[0195] a third indication, the third indication being used to indicate the backhaul path.

[0196] Optionally, the third indication is used to indicate a user plane connection of the backhaul path; the third indication comprises a connection identifier of the backhaul path, and the third indication is determined by a base station part of the mobile base station with wireless backhaul and / or a first network function.

[0197] Optionally, the third indication is determined by the first network function, and the method further comprises:

[0198] receiving the third indication sent by the first network function before sending the update message.

[0199] Optionally, the third indication is determined by the first network function, and the third indication comprises third address information, the third address information and the first address information both indicating backhaul path address information before the change; wherein the third address information is information used by the first network function when indicating the backhaul path address information before the change, and the first address information is information used by the mobile base station with wireless backhaul when indicating the backhaul path address information before the change.

[0200] Optionally, the first information is the update message; and the sending of the first information comprises at least one of the following:

[0201] the mobile base station with wireless backhaul currently wants to send an N2 message to the first network function, and the N2 message currently to be sent is sent to the first network function as the first information;

[0202] triggering an N2 message, and the triggered N2 message is sent to the first network function as the first information; wherein the triggered N2 message is a protocol existing N2 message or a new N2 message different from the protocol existing N2 message.

[0203] Optionally, the method further comprises:

[0204] communicating with the first network function through the backhaul path based on a source address of a data packet of the interface establishment request message.

[0205] Optionally, the method further comprises:

[0206] communicating with the first network function through the backhaul path based on the second address information.

[0207] Optionally, the communicating with the first network function through the backhaul path based on the source address of the data packet of the interface establishment request message comprises at least one of the following:

[0208] sending uplink information to the first network function through the backhaul path;

[0209] receiving downlink information sent by the first network function through the backhaul path;

[0210] wherein the uplink information satisfies at least one of:

[0211] the internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul;

[0212] the source address in the uplink information is replaced by the source address of the data packet of the interface establishment request message;

[0213] the source address in the uplink information is set as the source address of the data packet of the interface establishment request message;

[0214] and the downlink information satisfies at least one of:

[0215] the internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul;

[0216] the target address of the downlink information is the source address of the data packet of the interface establishment request message.

[0217] Optionally, the communication with the first network function through the backhaul path based on the second address information comprises:

[0218] sending uplink information to the first network function through the backhaul path;

[0219] receiving downlink information sent by the first network function through the backhaul path;

[0220] wherein the uplink information satisfies at least one of:

[0221] the internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul;

[0222] the source address in the uplink information is replaced by the second address information;

[0223] the source address in the uplink information is set as the second address information;

[0224] and the downlink information satisfies at least one of:

[0225] the internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul;

[0226] the target address of the downlink information is the second address information.

[0227] Optionally, the backhaul path address information of the mobile base station with wireless backhaul and the address information of the mobile base station with wireless backhaul each comprise at least one of an Internet Protocol (IP) address, an IP prefix, and a port address.

[0228] Optionally, the method further comprises at least one of the following:

[0229] The change of the address information of the backhaul path triggers a change in context information of the first terminal, and the context information of the first terminal is updated;

[0230] The change of the address information of the backhaul path triggers a handover of the first terminal, and a handover process of the first terminal is performed;

[0231] The backhaul path with the changed address information is used for a User Plane Function (UPF) network function of the first terminal, and user plane access connection information of the first terminal is changed;

[0232] The first terminal is a terminal that accesses a network through the mobile base station with wireless backhaul.

[0233] For details of step 3101, refer to the description of the above embodiments.

[0234] In the embodiments or examples, each step can be independent, arbitrarily combined, or the order can be exchanged without contradiction. The optional mode or example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples.

[0235] FIG. 4 is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4, the embodiment of the present disclosure relates to a communication method for a first network function, and the above method comprises:

[0236] Step 4101, receiving first information sent by a mobile base station with wireless backhaul through a backhaul path.

[0237] Optionally, the address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0238] Optionally, the first information is an interface establishment request message, and a source address of a data packet of the interface establishment request message is the backhaul path address information of the mobile base station with wireless backhaul.

[0239] Optionally, the interface establishment request message comprises second information, and the second information is used to indicate that the interface establishment request message comes from the mobile base station with wireless backhaul.

[0240] Optionally, the second information comprises at least one of:

[0241] a first indication, the first indication being used to indicate that the interface establishment request message is from the mobile base station with wireless backhaul;

[0242] access type information of the mobile base station with wireless backhaul;

[0243] location information of the mobile base station with wireless backhaul.

[0244] Optionally, the interface establishment request message is an NG establishment request message.

[0245] Optionally, the method further comprises:

[0246] recording a source address of a data packet of the interface establishment request message as backhaul path address information of the mobile base station with wireless backhaul.

[0247] Optionally, the first information is an update message, the update message being used to indicate that the backhaul path address information of the mobile base station with wireless backhaul is changed and / or the backhaul path address information of the mobile base station with wireless backhaul before change, a source address of a data packet of the update message being fourth address information, the fourth address information being the backhaul path address information of the mobile base station with wireless backhaul after change.

[0248] Optionally, the update message comprises at least one of:

[0249] a second indication, the second indication being used to indicate that the backhaul path address information of the mobile base station with wireless backhaul is changed;

[0250] first address information, the first address information being the backhaul path address information of the mobile base station with wireless backhaul before change;

[0251] identification information of a base station part of the mobile base station with wireless backhaul;

[0252] identification information of a terminal part of the mobile base station with wireless backhaul;

[0253] a data network name (DNN) of the backhaul path;

[0254] single network slice selection assistance information (S-NSSAI) of the backhaul path;

[0255] a third indication, the third indication being used to indicate the backhaul path.

[0256] Optionally, the third indication is used for indicating a user plane connection of the backhaul path; the third indication comprises a connection identifier of the backhaul path, and the third indication is determined by a base station part and / or a first network function of the mobile base station with wireless backhaul.

[0257] Optionally, the third indication is determined by the first network function, and the method further comprises:

[0258] The third indication is sent to the mobile base station with wireless backhaul before receiving the update message.

[0259] Optionally, the third indication is determined by the first network function, and the third indication comprises third address information, the third address information and the first address information both indicating backhaul path address information before the change; wherein the third address information is information used by the first network function when indicating the backhaul path address information before the change, and the first address information is information used by the mobile base station with wireless backhaul when indicating the backhaul path address information before the change.

[0260] Optionally, the first information is a protocol existing N2 message, or the first information is a new N2 message different from the protocol existing N2 message.

[0261] Optionally, the method further comprises:

[0262] The fourth address information is recorded as backhaul path address information of the mobile base station with wireless backhaul.

[0263] Optionally, the method further comprises:

[0264] The mobile base station with wireless backhaul communicates with the mobile base station with wireless backhaul based on a source address of a data packet of the interface establishment request message.

[0265] Optionally, the method further comprises:

[0266] The mobile base station with wireless backhaul communicates with the mobile base station with wireless backhaul based on the fourth address information.

[0267] Optionally, the mobile base station with wireless backhaul communicates with the mobile base station with wireless backhaul based on the source address of the data packet of the interface establishment request message, comprising:

[0268] Downlink information is sent to the mobile base station with wireless backhaul through the backhaul path;

[0269] Uplink information sent by the mobile base station with wireless backhaul through the backhaul path is received;

[0270] The downlink information satisfies at least one of the following:

[0271] The internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul;

[0272] The target address in the downlink information is replaced by the source address of the data packet of the interface establishment request message;

[0273] The target address in the downlink information is set as the source address of the data packet of the interface establishment request message;

[0274] In addition, the uplink information satisfies at least one of the following:

[0275] The internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul;

[0276] The source address of the uplink information is the source address of the data packet of the interface establishment request message.

[0277] Optionally, the communication with the mobile base station with wireless backhaul through the backhaul path based on the fourth address information comprises:

[0278] Sending downlink information to the mobile base station with wireless backhaul through the backhaul path;

[0279] Receiving uplink information sent by the mobile base station with wireless backhaul through the backhaul path;

[0280] In addition, the uplink information satisfies at least one of the following:

[0281] The internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul;

[0282] The target address in the downlink information is replaced by the fourth address information;

[0283] The target address in the downlink information is set as the fourth address information;

[0284] In addition, the uplink information satisfies at least one of the following:

[0285] The internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul;

[0286] The source address of the uplink information is the fourth address information.

[0287] Optionally, the backhaul path address information of the mobile base station with wireless backhaul and the address information of the mobile base station with wireless backhaul respectively comprise at least one of Internet Protocol (IP) address, IP prefix, and port address.

[0288] Optionally, the method further comprises at least one of the following:

[0289] The change of the address information of the backhaul path triggers a change of context information of the first terminal, and the context information of the first terminal is updated;

[0290] The change of the address information of the backhaul path triggers a handover of the first terminal, and a handover process of the first terminal is performed;

[0291] The backhaul path with the change of the address information is used for a user plane function (UPF) network function of the first terminal, and user plane access connection information of the first terminal is changed;

[0292] The first terminal is a terminal accessing a network through the mobile base station with wireless backhaul.

[0293] For details of step 4101, refer to the above embodiment description.

[0294] In the present embodiment or example, each step can be independent, arbitrarily combined or exchanged in order, and optional modes or examples can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples.

[0295] FIG. 5A is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5A, the embodiment of the present disclosure relates to a communication method for a communication system including a mobile base station with wireless backhaul, a first network function, and the above method includes at least one of the following:

[0296] Step 5101, the mobile base station with wireless backhaul sends first information to the first network function through the backhaul path;

[0297] Step 5102, the first network function receives the first information sent by the mobile base station with wireless backhaul through the backhaul path.

[0298] Optional implementation of steps 5101-5102 can be referred to the above embodiment description.

[0299] In some embodiments, the above method can include the method described in the above embodiment of the communication system side, the first device side, the network device side, etc., which will not be repeated here.

[0300] The communication method related by the embodiment of the present disclosure can include at least one of steps 5101-5102. For example, step 5101 can be implemented as an independent embodiment, and step 5102 can be implemented as an independent embodiment, but not limited thereto.

[0301] In the embodiments or examples, each step can be independent, arbitrarily combined or exchanged in sequence, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples.

[0302] The following is an exemplary introduction to the above method.

[0303] FIG. 5B is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5B, the method can include the following steps:

[0304] 1. The MWAB-UE is registered, and the MWAB-UE is authorized as a MWAB, and the MWAB-gNB is configured for wireless access.

[0305] 2. The MWAB-gNB obtains configuration information for wireless access from an OAM server.

[0306] 3. If there is an existing BH session (also referred to as a BH PDU session), the BH session is modified as needed to access the AMF or directly uses the user plane path of the BH session to access the AMF; if there is no suitable BH session, a BH session is established to provide a transmission path for accessing the AMF.

[0307] 4. The N2 message of the NG setup request is encapsulated into an IP packet, the source address is the address information of the BH session of the MWAB-UE, for example, at least one of the IP address, IP prefix, and port number of the BH session, and the target address is at least one of the IP address, IP prefix, and port number of the UE-AMF to be connected. Optionally, the NG setup request can include indication information indicating that the NG setup request is a message sent by the MWAB-gNB. Optionally, the indication information can be an explicit MWAB indication, or the indication information can be MWAB-gNB access type information, in which case it can be agreed in advance which access type base station is a MWAB-gNB, and the UE AMF1 can determine whether the received packet received is from a MWAB-gNB based on the MWAB-gNB access type information and the pre-agreed content. Alternatively, the indication information can be MWAB-gNB location information, in which case it can be agreed in advance which location base station is a MWAB-gNB, and the UE AMF1 can determine whether the received packet received is from a MWAB-gNB based on the MWAB-gNB location information and the pre-agreed content. Alternatively, the NG setup request can not include indication information, and it can be configured locally in the UE AMF which base stations are MWAB-gNBs, and then the UE AMF can determine whether the NG setup request is from a MWAB-gNB based on the local configuration.

[0308] Optionally, the MWAB-gNB can also construct a new N2 interface initial message.

[0309] 5. The MWAB-UE encapsulates the NG setup request N2 message constructed in step 4 as uplink data and sends it to the UE AMF1 to be accessed via the IP connection of the BH session.

[0310] 6. The UE AMF1 records the source address in the data packet received from the MWAB-gNB as the address information of the backhaul path of the MWAB-gNB access network, i.e. the address information of the provided backhaul path of the BH session of the MWAB-UE.

[0311] Optionally, the UE AMF1 can first determine whether the data packet it receives is from the MWAB-gNB, and then record the source address in the received packet as the address of the backhaul path when it is from the MWAB-gNB.

[0312] In some embodiments, the UE AMF1 can determine whether the received packet is from the MWAB-gNB based on the indication information included in the NG setup request N2 message of the received packet. Optionally, the indication information can be an explicit MWAB indication, in which case the UE AMF1 can determine that the received packet it receives is from the MWAB-gNB; or the indication information can be MWAB-gNB access type information, in which case it can be agreed in advance which access type base station is the MWAB-gNB, and the UE AMF1 can determine whether the received packet it receives is from the MWAB-gNB based on the MWAB-gNB access type information and the pre-agreed content; or the indication information can be MWAB-gNB location information, in which case it can be agreed in advance which location base station is the MWAB-gNB, and the UE AMF1 can determine whether the received packet it receives is from the MWAB-gNB based on the MWAB-gNB location information and the pre-agreed content; or in some other embodiments, the UE AMF1 can be locally configured with which base stations are the MWAB-gNB, and the UE AMF1 can determine which base station sent the NG setup request N2 message based on the global RAN node ID of the base station in the NG setup request N2 message, and determine whether the base station that sent the NG setup request N2 message is the MWAB-gNB based on the local configuration of the UE AMF1.

[0313] Optionally, when the UE AMF1 determines that the base station sending the N2 message of the NG setup request is the MWAB-gNB, the UE AMF1 can record this locally, and for subsequent N2 interactions other than the N2 message of the NG setup request, the UE AMF1 can determine directly based on the local record that it is from the MWAB-gNB; or the indication information described above can also be included in the subsequent N2 interaction, and the UE AMF1 can determine based on the indication information that the subsequent N2 interaction is from the MWAB-gNB; or the UE AMF1 can determine based on local configuration that it is from the MWAB-gNB.

[0314] 7. The UE AMF1 encapsulates the N2 message of the NG setup response as downlink data and sends it to the MWAB-UE from the IP connection of the BH session of the MWAB-UE.

[0315] 5a-7a. The N2 messages of the NG setup procedure are exchanged between the MWAB-gNB and the UE AMF2 via the IP connection of the BH session of the MWAB-UE.

[0316] 8 / 8a. The address information of the BH session of the MWAB-UE is used between the MWAB-gNB and the UE AMF (such as the UE AMF1 and / or the UE AMF2) for UE-related N2 interactions.

[0317] Optionally, for data packets sent from the MWAB-gNB to the UE AMF, the address information of the BH session of the MWAB-UE is used as at least one of the following:

[0318] The address information of the MWAB-gNB is encapsulated as an internal source address.

[0319] The source address can be replaced with the address information of the backhaul path, i.e. the address information of the BH session of the MWAB-UE.

[0320] The source address can be set to the address information of the backhaul path, i.e. the address information of the BH session of the MWAB-UE.

[0321] For data packets sent from the UE AMF to the MWAB-gNB, the address information of the BH session of the MWAB-UE is used as at least one of the following:

[0322] The address information of the MWAB-gNB is encapsulated as an internal target address.

[0323] The target address can be replaced with the address information of the backhaul path, i.e. the address information of the BH session of the MWAB-UE.

[0324] The target address can be set to the address information of the backhaul path, i.e. the address information of the BH session of the MWAB-UE.

[0325] Optionally, in some networks, the operator can use a NAT (Network Address Translation) function before the UPF sends data to the data network, for example, in the present embodiment, the data packet sent from the MWAB-gNB to the UE AMF is forwarded by the UPF of the backhaul path, and the UPF remaps the source address of the data packet when sending the data to the first network function, so that the source address of the data packet of the N2 message sent by the MWAB can be different from the source address of the data packet of the N2 message received by the first network function, but both indicate the same backhaul path address information. For example, assuming that the source address of the data packet of the interface establishment request message sent by the MWAB is address information #1, after the interface establishment request message is sent to the UPF of the backhaul path, the UPF remaps the source address from address information #1 to address information #2 before sending it to the first network function, at this time, the source address of the data packet of the interface establishment request message received by the first network function is address information #2, wherein address information #1 and address information #2 are used to indicate the same backhaul path address information, and address information #1 and address information #2 can be the same or different; wherein address information #1 can be the information used by the MWAB to indicate the backhaul path address information, and address information #2 can be the information used by the first network function to indicate the backhaul path address information. The data packet sent from the UE AMF to the MWAB is forwarded by the UPF of the backhaul path, and the UPF remaps the destination address of the data packet using the NAT function when receiving the data packet sent by the UE AMF through the backhaul path, in the above example, the destination address information of the data packet sent from the UE AMF is address information #2, and the UPF of the backhaul path maps it to address information #1 and transmits it to the MWAB-UE through the backhaul path.

[0326] 9. Provide address information of the backhaul path for the access UE AMF1 of the BH session that changes / removes / inserts. Perform subsequent steps 10-12 to notify the UE AMF of the address information update for transmission update between the MWAB-gNB and the UE AMF1.

[0327] 10. Construct an N2 message for indicating the address information update of the BH session.

[0328] Optionally, if there is any existing N2 message from the MWAB-gNB to the UE AMF1, an update indication to indicate that the address information of the BH session is updated can be included in any triggered N2 message. If there is no existing N2 message from the MWAB-gNB to the UE AMF1, the MWAB-gNB can construct a new N2 message to indicate that the address information of the BH session is updated. Optionally, an existing ERROR INDICATION or RAN CONFIGURATION UPDATE can be reused to trigger the indication that the address information of the BH session is updated. Or, the new N2 message can also be a new N2 message different from the existing N2 message in the protocol.

[0329] Optionally, for any N2 message to indicate that the address information of the BH session is updated, if the Global RAN Node ID of the MWAB-gNB does not change, or if the MWAB-gNB is connected to the UE AMF1 only one backhaul path of the BH session, the N2 message can include the Global RAN Node ID to identify which backhaul path address information is updated.

[0330] Optionally, when the Global RAN Node ID of the MWAB-gNB cannot uniquely identify the backhaul path to be updated, or the Global RAN Node ID of the MWAB-gNB changes, or because the MWAB-UE establishes multiple BH sessions, there are multiple BH session address information of the MWAB-UE recorded in the UE AMF1, at this time at least one of the following information is needed to identify which BH session address information is updated.

[0331] The UE ID of the MWAB-UE, such as the GPSI of the MWAB-UE, which can also be included in steps 5, 5a and step 10; wherein different BH sessions can correspond to different UE IDs;

[0332] The old address information of the BH session (i.e. the address information of the backhaul path before the update), which can also be included in step 5 or 5a and step 10; optionally, the address information before the update is needed to identify the record to be modified, and the backhaul path address information recorded by the UE AMF1 is mapped by NAT with the backhaul path address information recorded by the MWAB-gNB, then the node that determines to use the address information before the update to identify the record to be modified needs to send the corresponding address information determined to use to the opposite end before sending the update message, so as to facilitate the opposite end to use the corresponding information to identify the record to be modified when sending or receiving the update information.

[0333] information for identifying the user plane connection of the BH session, which has a mapping relationship with the IP connection provided by the BH session for N2 access, which can be a BH connection ID or other name, can be determined by the MWAB-gNB or the UE AMF, and can be included in steps 5 and / or steps 7, 5a and / or steps 7 and step 10; optionally, when the Global RAN Node ID of the MWAB-gNB cannot uniquely identify the backhaul path to be updated, or the Global RAN Node ID of the MWAB-gNB changes, or multiple BH sessions of the MWAB-UE are established due to the MWAB-UE, there is address information of multiple BH sessions of the MWAB-UE recorded in the UE AMF1, at this time, at least one of the following information is needed to identify which address information of the BH session is updated. Optionally, the address information of the backhaul path before the update can also be used to identify the information of the user plane connection of the BH session. Optionally, when the information is determined by the UE AMF, the information can be information on the UE AMF side for indicating the old address information of the BH session, which can be sent by the UE AMF to the MWAB-gNB; the information can include at least one of the following:

[0334] DNN of the PDU session of the MWAB-UE establishing the backhaul path;

[0335] S-SSNAI of the PDU session of the MWAB-UE establishing the backhaul path.

[0336] Optionally, the source address of the IP packet of the N2 message in step 10 is the updated address information of the BH session of the MWAB-UE, such as at least one of the updated IP address, the updated IP prefix, and the updated port number, and the target address is the IP address of the UE-AMF to be connected.

[0337] Optionally, in some embodiments, the change / removal / insertion of the address information of the BH session for accessing the UE AMF1 will also cause the following operations:

[0338] If the change / removal / insertion of the address information of the BH session causes the information of the UE context to be affected, the UE context management procedure can be performed. For example, the RAN UE NGAP ID for N2 access to serve the UE can be updated based on the updated address information of the BH session, or the RAN CP relocation indication can be triggered;

[0339] If the change / removal / insertion of the address information of the BH session causes the handover procedure of the UE, the UE mobility management of the UE can be performed. For example, if the NG-RAN node distinguishes with different address information of the BH session, the change / removal / insertion of the address information of the BH session causes the handover procedure to switch from the source NG-RAN node associated with the address information of the BH session before the update to the target NG-RAN node associated with the address information of the BH session after the update.

[0340] If the change / removal / insertion of the address information of the BH session affects the PDU session serving the UE, the PDU session management corresponding to the UE can be performed. For example, due to the change / removal / insertion of the address information of the BH session causing the change / removal / insertion of the sending of the address information of the BH session accessing the UE UPF, the backhaul path information of the PDU session of the UE accessed through the MWAB needs to be updated, for example, the update of the backhaul path address information of the corresponding PDU session can be implemented by updating the AN TNL information of the corresponding PDU session, optionally, the PDU session resource modification indication (PDU SESSION RESOURCE MODIFY INDICATION) can be triggered to update the AN TNL information of the affected PDU session. Optionally, the backhaul path address information of the corresponding PDU session can also be updated independently of the AN TNL information as a separate piece of information.

[0341] 11. The MWAB-UE encapsulates the N2 message constructed in step 10 as uplink data and sends it to the UE AMF1 via the IP connection of the BH session.

[0342] 12. The UE AMF1 updates the source address in the received packet received from the MWAB-gNB in step 11 as the address information of the BH session of the MWAB-UE based on the information received in step 11.

[0343] 13. Similar to step 8, the UE-related N2 interaction between the MWAB-gNB and the UE AMF1 is performed using the updated address information of the BH session of the MWAB-UE.

[0344] If the NG-RAN node supports the service-based interface (SBI) interface with the AMF, the above mechanism can also be applied, and the related message interaction is implemented through service invocation.

[0345] The embodiments of the present disclosure further provide a device for implementing any of the above methods, for example, a device comprising units or modules for implementing the steps performed by the terminal in any of the above methods. For another example, another device is provided, comprising units or modules for implementing the steps performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0346] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of the units or modules can be integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of processor invoking software: for example, the device comprises a processor connected with a memory, the memory stores instructions, and the processor invokes the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit or module of the device, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be implemented by designing the hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are implemented by designing the logical relationship of elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and 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 a configuration file, so as to implement the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor invoking software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules are implemented in the form of processor invoking software, and the remaining part is implemented in the form of hardware circuit.

[0347] In the embodiments 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 running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be 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), or the like.

[0348] FIG. 6A is a structural schematic diagram of a mobile base station with wireless backhaul according to an embodiment of the present disclosure. As shown in FIG. 6A, the mobile base station with wireless backhaul includes:

[0349] The transceiver is configured to send first information to a first network function through a backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

[0350] Optionally, the transceiver is configured to perform the steps related to “transceiving” performed by the mobile base station with wireless backhaul in any of the above methods, and the mobile base station with wireless backhaul further includes a processing module configured to perform the steps related to “processing” performed by the mobile base station with wireless backhaul in any of the above methods.

[0351] FIG. 6B is a structural schematic diagram of a first network function according to an embodiment of the present disclosure. As shown in FIG. 6B, the first network function includes:

[0352] The transceiver module is configured to receive first information sent by the mobile base station with wireless backhaul through a backhaul path, and address information of a data packet of the first information is used by the first network function to determine a backhaul path address of the mobile base station with wireless backhaul.

[0353] Optionally, the transceiver module is configured to perform the steps related to "transceiving" performed by the first network function in any of the above methods, and the first network function further includes a processing module configured to perform the steps related to "processing" performed by the first network function in any of the above methods.

[0354] FIG. 7A is a structural schematic diagram of a communication device 7100 according to the embodiments of the present disclosure. The communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment or the first device described above, etc.), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0355] As shown in FIG. 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general processor or a special-purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, and the central processing unit can be configured to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The processor 7101 is configured to invoke instructions to enable the communication device 7100 to perform any of the above methods.

[0356] In some embodiments, the communication device 7100 further includes one or more memories 7102 configured to store instructions. Optionally, all or part of the memory 7102 can also be located outside the communication device 7100.

[0357] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps in the above methods, such as sending and receiving, are performed by the transceiver 7103, and other steps are performed by the processor 7101.

[0358] In some embodiments, the transceiver can include a receiver and a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0359] Optionally, the communication device 7100 further includes one or more interface circuits 7104 connected with the memory 7102, which can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read the instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0360] The communication device 7100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited to this, and the structure of the communication device 7100 can not be limited by Figure 7a. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, intelligent terminal device, cellular phone, wireless device, handset, mobile unit, vehicle-mounted device, network device, cloud device, artificial intelligence device, etc.; (6) other, etc.

[0361] Figure 7B is a structural schematic diagram of a chip 7200 according to an embodiment of the present disclosure. For the case where the communication device 7100 is a chip or a chip system, the structural schematic diagram of the chip 7200 shown in Figure 7B can be referred to, but is not limited thereto.

[0362] The chip 7200 includes one or more processors 7201 for invoking instructions to cause the chip 7200 to perform any of the above methods.

[0363] In some embodiments, chip 7200 also includes one or more interface circuits 7202 that are connected to memory 7203. Interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and interface circuit 7202 can be used to send signals to memory 7203 or other devices. For example, interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, transceiver, and the like can be substituted for one another.

[0364] In some embodiments, chip 7200 also includes one or more memories 7203 for storing instructions. Optionally, all or part of memory 7203 can be external to chip 7200.

[0365] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on communication device 7100, cause communication device 7100 to perform 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 can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited thereto, and can also be a transitory storage medium.

[0366] The present disclosure also proposes a program product, which, when executed by communication device 7100, causes communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0367] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any of the above methods.

[0368] In the above embodiments, all or part can be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded on and executed by 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 devices. The computer programs can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another, for example, the computer programs can be transferred from one website, computer, server or data center to another via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as high-density digital video disc (digital video disc, DVD)), or semiconductor media (such as solid state disk (solid state disk, SSD)), etc.

[0369] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. A skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0370] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0371] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method is performed by a mobile base station with wireless backhaul, and the method comprises: sending first information to a first network function through a backhaul path, address information of a data packet of the first information being used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

2. The method of claim 1, wherein, The first information is an interface establishment request message, a source address of a data packet of the interface establishment request message being the backhaul path address information of the mobile base station with wireless backhaul.

3. The method of claim 2, wherein, The interface establishment request message comprises second information, the second information being used to indicate that the interface establishment request message comes from the mobile base station with wireless backhaul.

4. The method of claim 3, wherein, The second information comprises at least one of the following: a first indication, the first indication being used to indicate that the interface establishment request message comes from the mobile base station with wireless backhaul; access type information of the mobile base station with wireless backhaul; location information of the mobile base station with wireless backhaul.

5. The method of any one of claims 2-4, wherein, The interface establishment request message is an NG establishment request message.

6. The method of claim 1, wherein, The backhaul path address information of the mobile base station with wireless backhaul is changed from first address information to second address information, the first information being an update message, the update message being used to indicate that the backhaul path address information of the mobile base station with wireless backhaul is changed and / or the backhaul path address information of the mobile base station with wireless backhaul before the change, a source address of a data packet of the update message being the second address information.

7. The method of claim 6, wherein, The update message comprises at least one of the following: a second indication, the second indication being used to indicate that the backhaul path address information of the mobile base station with wireless backhaul is changed; the first address information; identification information of a base station part of the mobile base station with wireless backhaul; identification information of a terminal part of the mobile base station with wireless backhaul; a data network name (DNN) of the backhaul path; single network slice selection assistance information (S-NSSAI) of the backhaul path; a third indication, the third indication being used to indicate the backhaul path.

8. The method of claim 7, wherein, The third indication is used to indicate a user plane connection of the backhaul path, and the third indication comprises a connection identifier of the backhaul path, the third indication being determined by the mobile base station with wireless backhaul and / or the first network function.

9. The method of claim 8, wherein, The third indication is determined by the first network function, and the method further comprises: receiving the third indication sent by the first network function before sending the update message.

10. The method of any one of claims 7-9, wherein, The third indication is determined by the first network function, and the third indication comprises third address information, the third address information and the first address information both indicating the backhaul path address information before the change; wherein the third address information is information used by the first network function to indicate the backhaul path address information before the change, and the first address information is information used by the mobile base station with wireless backhaul to indicate the backhaul path address information before the change.

11. The method of any one of claims 6-10, wherein, The first information is the update message, and the sending of the first information comprises at least one of the following: The mobile base station with wireless backhaul currently sends an N2 message to the first network function, and sends the N2 message to be currently sent to the first network function as the first information; Trigger an N2 message, and send the triggered N2 message to the first network function as the first information; wherein the triggered N2 message is a new N2 message different from a protocol stored N2 message, or the triggered N2 message is a protocol stored N2 message.

12. The method of any one of claims 2-5, wherein, The method further comprises: Based on the source address of the data packet of the interface establishment request message, communicate with the first network function through the backhaul path.

13. The method of any one of claims 6-11, wherein, The method further comprises: Based on the second address information, communicate with the first network function through the backhaul path.

14. The method of claim 12, wherein, The communication with the first network function through the backhaul path based on the source address of the data packet of the interface establishment request message comprises at least one of: Send uplink information to the first network function through the backhaul path; Receive downlink information sent by the first network function through the backhaul path; The uplink information satisfies at least one of: An internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul; The source address in the uplink information is replaced by the source address of the data packet of the interface establishment request message; The source address in the uplink information is set as the source address of the data packet of the interface establishment request message; The downlink information satisfies at least one of: An internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul; The target address of the downlink information is the source address of the data packet of the interface establishment request message.

15. The method of claim 13, wherein, The communication with the first network function through the backhaul path based on the second address information comprises: Send uplink information to the first network function through the backhaul path; Receive downlink information sent by the first network function through the backhaul path; The uplink information satisfies at least one of: An internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul; The source address in the uplink information is replaced by the second address information; The source address in the uplink information is set as the second address information; The downlink information satisfies at least one of: An internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul; The target address of the downlink information is the second address information.

16. The method of any one of claims 1-15, wherein, The backhaul path address information of the mobile base station with wireless backhaul and the address information of the mobile base station with wireless backhaul each comprise at least one of an Internet Protocol (IP) address, an IP prefix, and a port address.

17. The method of any one of claims 6-16, wherein, The method further comprises at least one of: The change of the address information of the backhaul path triggers a change of context information of the first terminal, and the context information of the first terminal is updated; The change of the address information of the backhaul path triggers handover of the first terminal, and a handover process of the first terminal is performed. The backhaul path for address information change is used for a user plane function (UPF) network function of the first terminal, and user plane access connection information of the first terminal is changed; The first terminal is a terminal accessing a network through the mobile base station with wireless backhaul.

18. A method of communication, comprising: The method is performed by a first network function, and the method comprises: Receiving first information sent by the mobile base station with wireless backhaul through the backhaul path, address information of a data packet of the first information being used for the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

19. The method of claim 18, wherein, The first information is an interface establishment request message, and a source address of a data packet of the interface establishment request message is the backhaul path address information of the mobile base station with wireless backhaul.

20. The method of claim 19, wherein, The interface establishment request message comprises second information, and the second information is used for indicating that the interface establishment request message comes from the mobile base station with wireless backhaul.

21. The method of claim 20, wherein, The second information comprises at least one of the following: First indication, the first indication being used for indicating that the interface establishment request message comes from the mobile base station with wireless backhaul; Access type information of the mobile base station with wireless backhaul; Position information of the mobile base station with wireless backhaul.

22. The method of any one of claims 19-21, wherein, The interface establishment request message is an NG establishment request message.

23. The method of any one of claims 19-22, wherein, The method further comprises: Recording the source address of the data packet of the interface establishment request message as the backhaul path address information of the mobile base station with wireless backhaul.

24. The method of claim 18, wherein, The first information is an update message, the update message being used for indicating that the backhaul path address information of the mobile base station with wireless backhaul is changed and / or the backhaul path address information of the mobile base station with wireless backhaul before change, a source address of a data packet of the update message being fourth address information, and the fourth address information being the backhaul path address information of the mobile base station with wireless backhaul after change.

25. The method of claim 24, wherein, The update message comprises at least one of the following: Second indication, the second indication being used for indicating that the backhaul path address information of the mobile base station with wireless backhaul is changed; First address information, the first address information being the backhaul path address information of the mobile base station with wireless backhaul before change; Identification information of a base station part of the mobile base station with wireless backhaul; Identification information of a terminal part of the mobile base station with wireless backhaul; Data network name (DNN) of the backhaul path; Single network slice selection assistance information (S-NSSAI) of the backhaul path; Third indication, the third indication being used for indicating the backhaul path.

26. The method of claim 25, wherein, The third indication is used for indicating user plane connection of the backhaul path, and the third indication comprises connection identification of the backhaul path, and the third indication is determined by the mobile base station with wireless backhaul and / or the first network function.

27. The method of claim 26, wherein, The third indication is determined by the first network function, and the method further comprises: Before receiving the update message, sending the third indication to the mobile base station with wireless backhaul.

28. The method of any one of claims 25-27, wherein, The third indication is determined by a first network function, and the third indication includes third address information, the third address information and the first address information both indicate backhaul path address information before change; wherein, the third address information is information used by the first network function when indicating the backhaul path address information before change, and the first address information is information used by the mobile base station with wireless backhaul when indicating the backhaul path address information before change.

29. The method of any one of claims 24-28, wherein, The first information multiplexing protocol existing N2 message, or the first information is a new N2 message different from the protocol existing N2 message.

30. The method of any one of claims 24-29, wherein, The method further comprises: The fourth address information is recorded as the backhaul path address information of the mobile base station with wireless backhaul.

31. The method of any one of claims 20-23, wherein, The method further comprises: The source address of the data packet of the interface establishment request message is used to communicate with the mobile base station with wireless backhaul through the backhaul path.

32. The method of any one of claims 24-30, wherein, The method further comprises: The fourth address information is used to communicate with the mobile base station with wireless backhaul through the backhaul path.

33. The method of claim 31, wherein, The source address of the data packet of the interface establishment request message is used to communicate with the mobile base station with wireless backhaul through the backhaul path, comprising: Downlink information is sent to the mobile base station with wireless backhaul through the backhaul path; Uplink information sent by the mobile base station with wireless backhaul through the backhaul path is received; The downlink information satisfies at least one of the following conditions: An internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul; A target address in the downlink information is replaced by the source address of the data packet of the interface establishment request message; The target address in the downlink information is set as the source address of the data packet of the interface establishment request message; And the uplink information satisfies at least one of the following conditions: An internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul; The source address of the uplink information is the source address of the data packet of the interface establishment request message.

34. The method of claim 32, wherein, The fourth address information is used to communicate with the mobile base station with wireless backhaul through the backhaul path, comprising: Downlink information is sent to the mobile base station with wireless backhaul through the backhaul path; Uplink information sent by the mobile base station with wireless backhaul through the backhaul path is received; The downlink information satisfies at least one of the following conditions: An internal target address encapsulated in the downlink information is address information of the mobile base station with wireless backhaul; A target address in the downlink information is replaced by the fourth address information; The target address in the downlink information is set as the fourth address information; And the uplink information satisfies at least one of the following conditions: An internal source address encapsulated in the uplink information is address information of the mobile base station with wireless backhaul; The source address of the uplink information is the fourth address information.

35. The method of any one of claims 18-34, wherein, The backhaul path address information of the mobile base station with wireless backhaul and the address information of the mobile base station with wireless backhaul each include at least one of an Internet Protocol (IP) address, an IP prefix, and a port address.

36. The method of any one of claims 24-35, wherein, The method further includes at least one of: The change of the address information of the backhaul path triggers a change of context information of the first terminal, and the context information of the first terminal is updated; The change of the address information of the backhaul path triggers a handover of the first terminal, and a handover process of the first terminal is performed; The backhaul path with changed address information is used for a user plane function (UPF) network function of the first terminal, and user plane access connection information of the first terminal is changed; The first terminal is a terminal accessing a network through the mobile base station with wireless backhaul.

37. A communication method for a communication system, the communication system comprising a mobile base station with wireless backhaul and a first network function, the method comprising: The mobile base station with wireless backhaul sends first information to the first network function through a backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul; The first network function receives the first information sent by the mobile base station with wireless backhaul through the backhaul path.

38. A mobile base station with wireless backhaul, characterized by Comprising: A transceiver module is configured to send first information to the first network function through a backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

39. A first network function, the first network function comprising: Comprising: A transceiver module is configured to receive first information sent by the mobile base station with wireless backhaul through the backhaul path, and address information of a data packet of the first information is used by the first network function to determine backhaul path address information of the mobile base station with wireless backhaul.

40. A communications device, characterized by Comprising: One or more processors; A memory coupled to the processor, the memory having instructions stored thereon that, when executed by the processor, cause the communication device to perform the method of any one of claims 1-17 or claims 18-36.

41. A communication system, characterized by A terminal and a network device, wherein the terminal is configured to implement the method of any one of claims 1-17, and the network device is configured to implement the method of any one of claims 18-36.

42. A storage medium, the storage medium storing instructions, wherein, When the instructions run on the communication device, the communication device performs the method of any one of claims 1-17 or claims 18-36.

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