Communication method, network functions, first device, communication system and storage medium

Abstract

Provided in the embodiments of the present disclosure are a communication method, a first network function, a second network function, a first device, a communication system and a storage medium. The method comprises: sending first information to a first device, wherein the first information includes information related to a user equipment protocol data unit (UE PDU) session, and the first information is used for creating or modifying a backhaul protocol data unit (BH PDU) session for N3 backhaul. In this way, the technical solution provided in the embodiments of the present disclosure realizes a communication mechanism after the introduction of MWAB.

Description

Communication method, network function, first device, communication system and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and in particular to a communication method, a first network function, a second network function, a first device, a communication system and a storage medium. BACKGROUND

[0002] In the technical field of communication, a mobile gNB with wireless access backhaul (MWAB) is introduced, the MWAB can act as a base station of a terminal and provide access to a network, and the terminal can access the network through the MWAB.

[0003] SUMMARY

[0004] After the introduction of the MWAB, the communication mechanism needs to be adjusted.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, the method is performed by a first network function, and the method comprises:

[0006] sending first information to a first device;

[0007] The first information contains information related to a terminal protocol data unit (UE PDU) session, and the first information is used to create or modify a backhaul protocol data unit (BH PDU) session for N3 backhaul.

[0008] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, the method is performed by a second network function, and the method comprises:

[0009] receiving first information sent by the first network function;

[0010] The first information contains information related to a terminal protocol data unit (UE PDU) session, and the first information is used to create or modify a backhaul protocol data unit (BH PDU) session for N3 backhaul.

[0011] According to a third aspect of an embodiment of the present disclosure, a communication method is provided, the method is performed by a first device, and the method comprises:

[0012] receiving first information sent by a first network function;

[0013] The first information contains information related to a terminal protocol data unit (UE PDU) session, and the first information is used to create or modify a backhaul protocol data unit (BH PDU) session for N3 backhaul.

[0014] According to a fourth aspect of embodiments of the present disclosure, a communication method is provided, the method comprising:

[0015] sending, by a first network function, first information to a second network function;

[0016] sending, by the second network function, the first information to a first device;

[0017] wherein the first information contains information related to a user equipment protocol data unit, UE PDU, session, and the first information is used for creating or modifying a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0018] According to a fifth aspect of embodiments of the present disclosure, a first network function is provided, the first network function comprising:

[0019] a transceiver configured to:

[0020] send first information to a first device;

[0021] wherein the first information contains information related to a user equipment protocol data unit, UE PDU, session, and the first information is used for creating or modifying a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0022] According to a sixth aspect of embodiments of the present disclosure, a second network function is provided, the second network function comprising:

[0023] a transceiver configured to:

[0024] receive first information sent by the first network function;

[0025] wherein the first information contains information related to a user equipment protocol data unit, UE PDU, session, and the first information is used for creating or modifying a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0026] According to a seventh aspect of embodiments of the present disclosure, a first device is provided, the first device comprising:

[0027] a processing module configured to:

[0028] receive first information sent by the first network function;

[0029] wherein the first information contains information related to a user equipment protocol data unit, UE PDU, session, and the first information is used for creating or modifying a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0030] According to an eighth aspect of the embodiments of the present disclosure, a communication system is provided, wherein the communication system comprises a first network function, a second network function and a first device; the first network function is configured to implement the method of the first aspect, the second network function is configured to implement the method of the second aspect, and the first device is configured to implement the method of the third aspect.

[0031] According to a ninth aspect of the embodiments of the present disclosure, a first network function is provided, comprising:

[0032] one or more processors;

[0033] The first network function is configured to implement the method of the first aspect.

[0034] According to a tenth aspect of the embodiments of the present disclosure, a second network function is provided, comprising:

[0035] one or more processors;

[0036] The second network function is configured to implement the method of the second aspect.

[0037] According to an eleventh aspect of the embodiments of the present disclosure, a first device is provided, comprising:

[0038] one or more processors;

[0039] The first device is configured to implement the method of the third aspect.

[0040] According to a twelfth aspect of the embodiments of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, when the instructions run on a communication device, the communication device is caused to execute the method provided by the first aspect, the second aspect and / or the third aspect.

[0041] The technical solution provided by the embodiments of the present disclosure realizes the communication between the MWAB-UE and the core network.

[0042] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the embodiments of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiment description. The following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0044] FIG. 1a is a schematic diagram of a communication system architecture according to an exemplary embodiment;

[0045] FIG. 1b is a schematic diagram of a communication system architecture, according to an example embodiment;

[0046] FIG. 1c is a schematic diagram of a QoS flow, according to an example embodiment;

[0047] FIG. 2a is a schematic diagram of a communication method, according to an example embodiment;

[0048] FIG. 3a is a schematic diagram of a communication method, according to an example embodiment;

[0049] FIG. 3b is a schematic diagram of a communication method, according to an example embodiment;

[0050] FIG. 4a is a schematic diagram of a communication method, according to an example embodiment;

[0051] FIG. 4b is a schematic diagram of a communication method, according to an example embodiment;

[0052] FIG. 5a is a schematic diagram of a communication method, according to an example embodiment;

[0053] FIG. 5b is a schematic diagram of a communication method, according to an example embodiment;

[0054] FIG. 6a is a schematic diagram of a communication method, according to an example embodiment;

[0055] FIG. 7a is a schematic diagram of a communication method, according to an example embodiment;

[0056] FIG. 8a is a schematic diagram of a structure of a first network device, according to an example embodiment;

[0057] FIG. 8b is a schematic diagram of a structure of a second network function, according to an example embodiment;

[0058] FIG. 8c is a schematic diagram of a structure of a first device, according to an example embodiment;

[0059] FIG. 9a is a schematic diagram of a structure of a UE, according to an example embodiment;

[0060] FIG. 9b is a schematic diagram of a structure of a communication device, according to an example embodiment. DETAILED DESCRIPTION

[0061] Embodiments of the present disclosure provide a communication method, a first network function, a second network function, a first device, a communication system and a storage medium.

[0062] In a first aspect, embodiments of the present disclosure provide a communication method, performed by a first network function, the method comprising:

[0063] sending, to a first device, first information;

[0064] The first information includes information related to a terminal protocol data unit (UE PDU) session, and the first information is used to create or modify a backhaul protocol data unit (BH PDU) session for N3 backhaul.

[0065] In the above embodiment, since the first network function sends the first device the first information used to create or modify a BH PDU session for N3 backhaul, thus, the first device can create or modify a BH PDU session based on the first information after receiving the first information, and since the first information includes information related to a UE PDU session, thus, the created or modified BH PDU session can carry the UE PDU session.

[0066] In combination with the embodiment of the first aspect, in some embodiments, the sending, to the first device, the first information comprises:

[0067] sending, to a second network function, the first information;

[0068] The second network function is configured to send the first information to the first device.

[0069] In the above embodiment, the first network function can send the first information to the first device through the second network function.

[0070] In combination with the embodiment of the first aspect, in some embodiments, the first information includes at least one of the following:

[0071] terminal user plane function (UE UPF) address information;

[0072] information of a session and service continuity (SSC) mode;

[0073] information of a PDU session type.

[0074] In combination with the embodiment of the first aspect, in some embodiments, the first network function is a session management function (SMF) of a terminal, and the first device is a mobile wireless backhaul (MWAB) base station.

[0075] In combination with the embodiment of the first aspect, in some embodiments, the second network function is an access and mobility management function (AMF) of a terminal.

[0076] The second aspect provides a communication method, which is performed by a second network function, and includes:

[0077] receiving first information sent by the first network function;

[0078] The first information contains information related to a terminal protocol data unit, UE PDU, session, and the first information is used to create or modify a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0079] With reference to the embodiments of the second aspect, in some embodiments, the method further includes:

[0080] sending the first information to the first device.

[0081] With reference to the embodiments of the second aspect, in some embodiments, the first information includes at least one of:

[0082] terminal user plane function, UE UPF, address information;

[0083] information of a session and service continuity, SSC, mode;

[0084] information of a PDU session type.

[0085] With reference to the embodiments of the second aspect, in some embodiments, the first network function is a session management function, UE SMF, of a terminal; and the second network function is an access and mobility management function, UE AMF, of the terminal.

[0086] With reference to the embodiments of the second aspect, in some embodiments, the first device is a mobile base station with wireless backhaul, MWAB.

[0087] In a third aspect, embodiments of the present disclosure provide a communication method, the method being performed by a first device, and the method includes:

[0088] receiving first information sent by a first network function;

[0089] The first information contains information related to a terminal protocol data unit, UE PDU, session, and the first information is used to create or modify a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0090] With reference to the embodiments of the third aspect, in some embodiments, the receiving the first information sent by the first network function includes:

[0091] receiving first information sent by a second network function;

[0092] The second network function is configured to send the first information received from the first network function to the second network function.

[0093] With reference to the embodiments of the third aspect, in some embodiments, the method further includes:

[0094] trigger the BH PDU session creation or modification based on the first information.

[0095] In some embodiments, the first information comprises at least one of:

[0096] a terminal user plane function, UE UPF, address information;

[0097] information of a session and service continuity, SSC, mode;

[0098] information of a PDU session type.

[0099] In some embodiments, the method further comprises:

[0100] creating or modifying the BH PDU session based on the first information and / or second information;

[0101] In some embodiments, the second information comprises at least one of:

[0102] a data network name, DNN;

[0103] a single network slice selection assistance information, S-NSSAI.

[0104] In some embodiments, the second information is configured by an operator server for a terminal or determined by a network function of a core network.

[0105] In some embodiments, the first network function is a session management function, UE SMF, of a terminal; and the first device is a mobile base station with wireless backhaul, MWAB.

[0106] In some embodiments, the second network function is an access and mobility management function, UE AMF, of a terminal.

[0107] A fourth aspect, the embodiments of the present disclosure provide a communication method, the method comprising:

[0108] a first network function sending first information to a second network function;

[0109] the second network function sending the first information to a first device;

[0110] In some embodiments, the first information comprises information related to a terminal protocol data unit, UE PDU, session, and the first information is used to create or modify a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0111] A fifth aspect, the embodiments of the present disclosure provide a first network function, the first network function comprising:

[0112] a transceiver configured to:

[0113] send first information to the first device;

[0114] wherein the first information contains information related to a terminal protocol data unit, UE PDU, session, and the first information is used to create or modify a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0115] In a sixth aspect, an embodiment of the present disclosure provides a second network device, the second network device comprising:

[0116] a transceiver configured to:

[0117] receive first information sent by the first network function;

[0118] wherein the first information contains information related to a terminal protocol data unit, UE PDU, session, and the first information is used to create or modify a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0119] In a seventh aspect, an embodiment of the present disclosure provides a first device, the first device comprising:

[0120] a transceiver configured to:

[0121] receive first information sent by the first network function;

[0122] wherein the first information contains information related to a terminal protocol data unit, UE PDU, session, and the first information is used to create or modify a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0123] In an eighth aspect, an embodiment of the present disclosure provides a communication system, the communication system comprising a first network function, a second network function, and a first device; the first network function is configured to implement the method of the first aspect, the second network function is configured to implement the method of the second aspect, and the first device is configured to implement the method of the third aspect.

[0124] In a ninth aspect, an embodiment of the present disclosure provides a first network function, the first network function comprising:

[0125] one or more processors;

[0126] wherein the first network function is configured to perform the method provided in the first aspect.

[0127] In a tenth aspect, an embodiment of the present disclosure provides a second network function, the second network function comprising:

[0128] one or more processors;

[0129] The second network function is configured to perform the method provided in the second aspect.

[0130] In a eleventh aspect, the embodiments of the present disclosure provide a first device, the first device comprising:

[0131] one or more processors;

[0132] The first device is configured to perform the method provided in the third aspect.

[0133] In a twelfth aspect, the embodiments of the present disclosure provide a storage medium, wherein the storage medium stores instructions, when the instructions run on a communication device, the communication device performs the method described in the optional implementation of the first aspect, the second aspect and / or the third aspect.

[0134] In a thirteenth aspect, the embodiments of the present disclosure provide a program product, when the program product is executed by a communication device, the communication device performs the method described in the optional implementation of the first aspect, the second aspect and / or the third aspect.

[0135] In a fourteenth aspect, the embodiments of the present disclosure provide a computer program, when the computer program runs on a computer, the computer performs the method described in the optional implementation of the first aspect, the second aspect and / or the third aspect.

[0136] In a fifteenth aspect, the embodiments of the present disclosure provide a chip or a chip system. The chip or the chip system comprises processing circuitry configured to perform the method described in the optional implementation of the first aspect, the second aspect and / or the third aspect.

[0137] It can be understood that the first network function, the second network function, the first device, the communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects they can achieve can refer to the beneficial effects in the corresponding method, which will not be repeated here.

[0138] The embodiments of the present disclosure propose a communication method, a first network function, a second network function, a first device, a communication system and a storage medium. In some embodiments, the terms of communication method, information indication method, information processing method, information transmission method, etc. can be replaced with each other, and the terms of communication system, information processing system, etc. can be replaced with each other.

[0139] The 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 part of the steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, part or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with optional implementation of other embodiments arbitrarily.

[0140] 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 new embodiments according to their inherent logical relationship.

[0141] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0142] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this" and the like, can represent "one and only one", and can also represent "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, and can also be understood as plural expression.

[0143] In the embodiments of the present disclosure, "plurality" means two or more.

[0144] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0145] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0146] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0147] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0148] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0149] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0150] In some embodiments, the terms "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 "less than", "less than or equal to", "not greater than", "fewer than", "fewer 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.

[0151] In some embodiments, the apparatuses and devices can be interpreted as physical or virtual, and their names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", and the like.

[0152] In some embodiments, "network" can be interpreted as an apparatus included in the network, such as an access network device, a core network device, and the like.

[0153] In some embodiments, an “access network device (AN device)” can also be referred to as a “radio access network device (RAN device),” a “base station (BS),” a “radio base station,” a “fixed station,” and in some embodiments can also be understood as a “node,” an “access point,” a “transmission point (TP),” a “reception point (RP),” a “transmission / reception point (TRP),” a “panel,” an “antenna panel,” an “antenna array,” a “cell,” a “macro cell,” a “small cell,” a “femto cell,” a “pico cell,” a “sector,” a “cell group,” a “serving cell,” a “carrier,” a “component carrier,” a “bandwidth part (BWP),” and the like.

[0154] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and / or the like.

[0155] In some embodiments, data, information, and / or the like can be acquired in compliance with laws and regulations of a country in which a location is situated.

[0156] In some embodiments, data, information, and / or the like can be acquired after consent of a user is obtained.

[0157] In addition, each element, each row, or each column in a table of embodiments of the present disclosure can be implemented as an independent embodiment, and a combination of any element, any row, or any column can be implemented as an independent embodiment.

[0158] FIG. 1a is an architecture diagram of a communication system, according to embodiments of the present disclosure.

[0159] As shown in FIG. 1a, a communication system 100 includes a terminal 101 and a network device 102.

[0160] In some embodiments, the network device 102 can include at least one of an access network device 1021 and a core network device 1022.

[0161] In some embodiments, the access network device 1021 can be a MWAB.

[0162] In some embodiments, the core network device 1022 can be a first network function or a second network function.

[0163] In some embodiments, the terminal includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a tablet (Pad), a wireless transceiver-equipped computer, 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, and the like, but is not limited thereto.

[0164] In some embodiments, the access network device can be at least one of a node or a device that accesses a terminal to a wireless network, for example, 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 RAN, a Cloud RAN, a base station in other communication systems, an access node in a Wi-Fi system, and the like, but is not limited thereto.

[0165] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0166] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, and some of the protocol layers are controlled by the CU, and the rest or all of the protocol layers are distributed in the DU and controlled by the CU, but not limited thereto.

[0167] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups including all or part of the one or more network elements. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next-generation core (NGC).

[0168] 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 provided by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0169] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1a or part of the subject, but are not limited thereto. The subjects shown in FIG. 1a are examples, and the communication system can include all or part of the subjects in FIG. 1a, or include other subjects other than those in FIG. 1a. The number and form of each subject is arbitrary, and the connection relationship between each subject is an example. Each subject can not be connected or can be connected, and the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0170] 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 on them, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0171] In some embodiments, a mobile gNB with wireless access backhaul (MWAB) is a mobile base station that is capable of acting as a gNB for other UEs and providing access to a 5G network, i.e., providing a New Radio (NR) access link to UEs and a wireless connection to 5GC (using NR) over an Internet Protocol (IP) connection provided by a Packet Data Unit (PDU) session that is established via an NG-RAN cell on which the mobile gNB can camp. The PDU session is provided by a terrestrial network or a non-terrestrial network. Such a mobile gNB can be installed on a moving vehicle and serve UEs that can be located inside or outside (or entering / leaving) the vehicle.

[0172] In some embodiments, the MWAB-gNB is the base station part of the MWAB.

[0173] In some embodiments, the MWAB-UE is the terminal part of the MWAB.

[0174] In some embodiments, the MWAB-gNB can implement base station functionality.

[0175] In some embodiments, the N2 / N3 and OAM access of the MWAB-gNB is based on the IP connection provided by the PDU session of the MWAB-UE.

[0176] In some embodiments, the interface between the MWAB-UE and the MWAB-gNB is not in the scope of SA WG2.

[0177] In some embodiments, the MWAB-UE has a single New Radio (NR) Uu hop to the NG-RAN (i.e., the MWAB-UE accesses a gNB via a NR Uu interface that can use terrestrial network (TN) or non-terrestrial network (NTN) technology).

[0178] In some embodiments, the MWAB can serve UEs inside or outside a vehicle that is installed with a relay.

[0179] In some embodiments, NR Uu is used for the radio link between the MWAB-gNB and the served UEs. The NR Uu radio link between the MWAB-gNB and the served UEs does not use NTN technology.

[0180] In some embodiments, the framework associated with the MWAB can provide positioning services to the served UE.

[0181] In some embodiments, the MWAB can be connected to the NG-RAN of a PLMN or a stand-alone NPN (SNPN).

[0182] In some embodiments, the MWAB-gNB can broadcast a PLMN ID different from the PLMN ID of the Public Land Mobile Network (PLMN) to which the MWAB-UE is connected.

[0183] In some embodiments, the serving PLMN of the UE is the PLMN broadcast by the MWAB-gNB in which it is located or connected. This can be a PLMN ID different from the PLMN ID of the PLMN serving the MWAB-UE.

[0184] In some embodiments, when the UE is served via the MWAB-gNB, the N2 access is over the IP connectivity provided by the PDU session of the MWAB-UE, so the AMF serving the UE via the MWAB-gNB should support N2 messages transported via the IP connectivity provided by the PDU session of the MWAB-UE.

[0185] In some embodiments, the UE PDU sessions are backhauled through a backhaul (BH) PDU session, so they need to share some common characteristics, such as PDU session type, session and service continuity (SSC) mode. The related solutions for BH PDU session establishment ignore this.

[0186] See Figure 1b, which shows an example of the architecture of a non-roaming scenario of the 5G system.

[0187] In some embodiments, based on the definition of the MWAB, the MWAB provides wireless connectivity to the 5GC through the IP connectivity provided by the PDU session, and both the N2 interface and the N3 interface are carried on the PDU session between the MWAB-UE and the 5GC.

[0188] In some embodiments, for the N2 interface and the N3 interface, at least one PDU session is established between the MWAB-UE and the 5GC:

[0189] If the serving AMF and serving UPF of the MWAB-UE are in the same Data Network Name (DNN), N2 and N3 use a single PDU session; otherwise, the PDU session for N2 and the PDU session for N3 are separate.

[0190] Referring to FIG. 1c, the UE PDU session goes through MWAB-UE PDU session for N3 backhaul, so they need to share common features, e.g., PDU session type, Session and Service Continuity (SSC) mode, etc. In addition, UE Quality of Service (QoS) flows and MWAB-UE QoS flows must be mapped to each other in order to transmit to / from 5GC through MWAB-UE Uu interface and UE Uu interface.

[0191] In some embodiments, in the related solutions for N3 backhaul PDU session establishment, the UE PDU session establishment procedure is performed first. After receiving the PDU session resource setup request from the UE AMF, the MWAB-gNB decides to establish the MWAB-UE PDU session for wireless N3 backhaul. And the same User Plane Function (UPF) for the UE PDU session is used for the MWAB-UE PDU session.

[0192] In some embodiments, the UE UPF is selected before N3 wireless backhaul is available, resulting in the UE UPF being unreachable.

[0193] In some embodiments, the UE UPF and the MWAB-UE UPF are the same, but it lacks details on how to ensure the same UPF is selected for the UE and the MWAB-UE. If the UE PDU session shares the same UPF with the MWAB-UE session, UPF reselection and traffic forwarding between the MWAB-UE UPF and the UE UPF can be avoided.

[0194] In some embodiments, the MWAB-UE PDU session should be established before the UE PDU session establishment procedure. The UE sends a PDU session establishment request (backhaul PDU session for N2) to the UE AMF, including a MWAB indication in the N2 message. The MWAB indication is used to help the AMF or SMF determine that the N3 wireless backhaul requires a MWAB-UE PDU session, and if no existing MWAB-UE PDU session is available, trigger the MWAB-UE PDU session establishment procedure.

[0195] In some embodiments, the MWAB-UE PDU session and the UE-PDU session can be made to share the same UPF.

[0196] In some embodiments, the UE UPF is established as an application server (application server) to establish a BH PDU session.

[0197] Figure 2a is an interaction diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 2a, the embodiment of the present disclosure relates to a communication method for a communication system 100, the method comprising:

[0198] Step S2101: The first network function sends first information to the first device or the second network function.

[0199] In some embodiments, the first device receives the first information sent by the first network function.

[0200] In some embodiments, the second network function receives the first information sent by the first network function.

[0201] In some embodiments, the first network function is a session management function (SMF, Session Management Function), for example, a UE SMF.

[0202] In some embodiments, the second network function is an access and mobility management function (AMF, Access and Mobility Management Function), for example, a UE AMF.

[0203] In some embodiments, the first device can be a MWAB, which includes two parts of MWAB-gNB and MWAB-UE.

[0204] It should be noted that the network function (for example, the first network function) in the present disclosure can also be referred to as a network device, a network entity, a network element or a device in some scenarios, which is not limited herein. The network function can be a logical function, and different logical functions can be deployed in the same device or in different devices, which is not limited herein.

[0205] In some embodiments, the first information contains information related to a terminal protocol data unit (UE PDU) session.

[0206] In some embodiments, the first information is used to create or modify a backhaul protocol data unit (BH PDU) session for N3 backhaul.

[0207] In some embodiments, the first network function can send the first information to the first device through the second network function, but is not limited to only sending the first information to the first device through the second network function, and can also send the first information to the first device through other network functions, which is not limited herein.

[0208] In some embodiments, the first network function sends the first information to a second network function, and the second network function is configured to send the first information to the first device.

[0209] In some embodiments, the first information comprises at least one of:

[0210] terminal UE user plane function (UPF, User Plane Function) address information;

[0211] information of a session and service continuity (SSC) mode;

[0212] information of a PDU session type.

[0213] Step S2102: The second network function sends the first information to the first device.

[0214] In some embodiments, the first device receives the first information sent by the second network function.

[0215] In some embodiments, after receiving the first information sent by the first network function, the second network function sends the first information to the first device.

[0216] In some embodiments, the second network function sends an N2 message to the first device, the N2 message is configured to request an N2 PDU session, and the N2 message contains the first information.

[0217] Step S2103: The first device triggers the establishment of a BH PDU session.

[0218] In some embodiments, the first device triggers the creation or modification of the BH PDU session based on the first information.

[0219] In some embodiments, the first device triggers the creation or modification of the BH PDU session for N3 backhaul based on the first information.

[0220] In some embodiments, the first device creates or modifies the BH PDU session based on the second information.

[0221] In some embodiments, the first device creates or modifies the BH PDU session for N3 backhaul based on the second information.

[0222] In some embodiments, the first device creates or modifies the BH PDU session based on the first information and / or the second information.

[0223] In some embodiments, the first device creates or modifies the BH PDU session for N3 backhaul based on the first information and / or the second information.

[0224] In some embodiments, the second information comprises at least one of:

[0225] a data network name (DNN);

[0226] a single network slice selection assistance information (S-NSSAI).

[0227] In some embodiments, the second information is configured by an operator server.

[0228] It should be noted that the operator server configuration can be pre-configuration (e.g., static configuration) or dynamic configuration, which is not limited herein.

[0229] In some embodiments, the second information is determined by a network function of the core network.

[0230] In some embodiments, the creation of a PDU session requires at least one of the following parameters:

[0231] a PDU session type;

[0232] an SSC mode;

[0233] a data network name (DNN);

[0234] a single network slice selection assistance information (S-NSSAI).

[0235] In some embodiments, the second information can also contain the first information.

[0236] In some embodiments, the second information contains at least one of:

[0237] a terminal user plane function (UE UPF) address information;

[0238] a session and service continuity (SSC) mode information;

[0239] PDU session type information;

[0240] Data network name;

[0241] Single network slice selection assistance information.

[0242] In some embodiments, the first device creates or modifies the BH PDU session based on the terminal user plane function (UE UPF) address information.

[0243] In some embodiments, the first device creates or modifies the BH PDU session based on the session and service continuity (SSC) mode information.

[0244] In some embodiments, the first device creates or modifies the BH PDU session based on the PDU session type information.

[0245] In some embodiments, the first device creates or modifies the BH PDU session based on the data network name.

[0246] In some embodiments, the first device creates or modifies the BH PDU session based on the single network slice selection assistance information.

[0247] In some embodiments, the first device creates or modifies the BH PDU session based on at least two of the terminal user plane function (UE UPF) address information, the session and service continuity (SSC) mode information, the PDU session type information, the data network name, and the single network slice selection assistance information.

[0248] In some embodiments, the first device creates or modifies the BH PDU session based on the terminal user plane function (UE UPF) address information, the session and service continuity (SSC) mode information, the PDU session type information, the data network name, and the single network slice selection assistance information.

[0249] In some embodiments, the PDU session type is used to determine a type of data packet that can be transmitted.

[0250] In some embodiments, the type of data packet includes an Internet Protocol (IP) data packet type and / or an ethernet data packet type.

[0251] In some embodiments, the SSC mode is used to determine continuity of traffic.

[0252] In some embodiments, the SSC mode 1, the SSC mode 2, and the SSC mode 3 are respectively adapted to traffic with different requirements for continuity.

[0253] In some embodiments, the DNN is used to determine the destination network type.

[0254] In some embodiments, the destination network type can be internet for surfing the web or IP Multimedia Subsystem (IMS) for making a phone call.

[0255] In some embodiments, the S-NSSAI is used to select a network slice, and different slice types are suitable for different services.

[0256] In some embodiments, the PDU session type and SSC mode need to be the same as the UE PDU session when establishing the BH PDU session.

[0257] In some embodiments, the UE UPF is the destination (corresponding to a destination address) of the BH PDU session, so the address information (address info) also needs to be informed to the MWAB to facilitate the MWAB-UE to find the destination of data transmission. Therefore, the first information can include the PDU session type, SSC mode and / or UE UPF address info.

[0258] In some embodiments, the two parameters of DNN and S-NSSAI can be BH PDU session dedicated (so they do not need to be the same as the UE PDU session), which can be pre-configured by the operator to the MWAB-UE, so that the MWAB-UE can carry these two parameters in the process of establishing the BH PDU session; or, the MWAB-UE does not carry these two parameters in the process of establishing the BH PDU session, and the MWAB-UE AMF can determine the DNN and S-NSSAI by comprehensively considering the subscription information and other factors.

[0259] In some embodiments, the term “information” can be mutually replaced with the terms “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “field”, “data”, and the like.

[0260] In some embodiments, the term “send” can be mutually replaced with the terms “transmit”, “report”, “transport”, and the like.

[0261] The information indication method related to the embodiments of the present disclosure can include at least one of steps S2101 to S2103. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, and step S2103 can be implemented as an independent embodiment. For example, step S2101 in combination with step S2103 can be implemented as an independent embodiment, step S2101 in combination with step S2102 and step S2103 can be implemented as an independent embodiment, and step S2102 in combination with step S2103 can be implemented as an independent embodiment, but the present disclosure is not limited thereto. It should be noted that each step can be independently implemented, or in the case of no contradiction, the order can be arbitrarily exchanged and freely combined for implementation.

[0262] FIG. 3a is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3a, the embodiment of the present disclosure relates to a communication method, which is performed by a first network function, and the above method comprises:

[0263] Step S3101: sending first information to a first device or a second network function.

[0264] In some embodiments, the optional implementation of step S3101 can refer to step S2101 of FIG. 2a and other associated parts in the embodiments related to FIG. 2a, which will not be described here.

[0265] FIG. 3b is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3b, the embodiment of the present disclosure relates to a communication method, which is performed by a first device, and the above method comprises:

[0266] Step S3201: sending first information to a first device.

[0267] In some embodiments, the first information contains information related to a terminal protocol data unit (UE PDU) session, and the first information is used to create or modify a backhaul protocol data unit (BH PDU) session for N3 backhaul.

[0268] In some embodiments, the optional implementation of step S3201 can refer to step S2101 of FIG. 2a and other associated parts in the embodiments related to FIG. 2a, which will not be described here.

[0269] In some embodiments, the sending of the first information to the first device comprises:

[0270] sending the first information to a second network function;

[0271] The second network function is configured to send the first information to the first device.

[0272] In some embodiments, the first information comprises at least one of the following:

[0273] User Equipment User Plane Function, UE UPF, address information;

[0274] Session and Service Continuity, SSC, mode information;

[0275] PDU session type information.

[0276] In some embodiments, the first network function is a Session Management Function, SMF, of a terminal; and the first device is a mobile wireless backhaul base station, MWAB.

[0277] In some embodiments, the second network function is an Access and Mobility Management Function, AMF, of a terminal.

[0278] FIG. 4a is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 4a, the embodiment of the present disclosure relates to a communication method, which is performed by a second network function, and the above method comprises:

[0279] Step S4101: receiving first information sent by a first network function.

[0280] In some embodiments, the optional implementation of step S4101 can refer to other associated parts in the embodiments related to step S2101 in FIG. 2a, which will not be described here.

[0281] Step S4102: sending the first information to a first device.

[0282] In some embodiments, the optional implementation of step S4102 can refer to other associated parts in the embodiments related to step S2102 in FIG. 2a, which will not be described here.

[0283] The information indication method related to the embodiments of the present disclosure can comprise at least one of steps S4101 to S4102. For example, step S4101 can be implemented as an independent embodiment, and step S4102 can be implemented as an independent embodiment. For example, step S4101 in combination with step S4102 can be implemented as an independent embodiment, but is not limited thereto. It should be noted that each step can be independently implemented, or can be arbitrarily exchanged in order and freely combined for implementation without contradiction.

[0284] FIG. 4b is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 4b, the embodiment of the present disclosure relates to a communication method, which is performed by a first network function, and the above method comprises:

[0285] Step S4201: receiving first information sent by the first network function.

[0286] In some embodiments, the first information comprises information related to a terminal protocol data unit, UE PDU, session, and the first information is used for creating or modifying a backhaul protocol data unit, BH PDU, session for N3 backhaul.

[0287] In some embodiments, the optional implementation of step S4201 can refer to other associated parts in the embodiments related to step S2101 in FIG. 2a, which will not be repeated here.

[0288] In some embodiments, the method further comprises:

[0289] sending the first information to the first device.

[0290] In some embodiments, the first information comprises at least one of the following:

[0291] terminal user plane function, UE UPF, address information;

[0292] information of a session and service continuity, SSC, mode;

[0293] information of a PDU session type.

[0294] In some embodiments, the first network function is a session management function, UE SMF, of a terminal, and the second network function is an access and mobility management function, UE AMF, of the terminal.

[0295] In some embodiments, the first device is a mobile base station with wireless backhaul, MWAB.

[0296] FIG. 5a is a flow diagram illustrating 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, which is performed by a first device, and the above method comprises:

[0297] Step S5101: receiving first information sent by a first network function or a second network function.

[0298] In some embodiments, the optional implementation of step S5101 can refer to other associated parts in the embodiments related to step S2101 and step S2102 in FIG. 2a, which will not be repeated here.

[0299] Step S5102: triggering establishment of a BH PDU session.

[0300] In some embodiments, the optional implementation of step S5102 can refer to other associated parts in the embodiments related to step S2103 in FIG. 2a, which will not be repeated here.

[0301] The information indication method related to the embodiments of the present disclosure can include at least one of steps S5101 to S5102. For example, step S5101 can be implemented as an independent embodiment, and step S5102 can be implemented as an independent embodiment,

[0302] FIG. 5b is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 5b, the embodiments of the present disclosure relate to a communication method performed by a first device, and the method comprises:

[0303] Step S5201: receiving first information sent by a first network function.

[0304] In some embodiments, the first information contains information related to a terminal protocol data unit (UE PDU) session, and the first information is used to create or modify a backhaul protocol data unit (BH PDU) session for N3 backhaul.

[0305] In some embodiments, the optional implementation of step S5201 can refer to other associated parts in the embodiments related to step S2103 in FIG. 2a, which will not be repeated here.

[0306] In some embodiments, the receiving first information sent by a first network function comprises:

[0307] receiving first information sent by a second network function;

[0308] Wherein, the second network function is used to send the first information received from the first network function to the second network function.

[0309] In some embodiments, the method further comprises:

[0310] triggering the creation or modification of the BH PDU session based on the first information.

[0311] In some embodiments, the first information comprises at least one of:

[0312] terminal user plane function (UE UPF) address information;

[0313] information of session and service continuity (SSC) mode;

[0314] information of PDU session type.

[0315] In some embodiments, the method further comprises:

[0316] creating or modifying the BH PDU session based on second information;

[0317] Wherein, the second information comprises at least one of:

[0318] Data Network Name, DNN;

[0319] Single Network Slice Selection Assistance Information, S-NSSAI.

[0320] In some embodiments, the second information is configured by the operator server for the terminal or determined by a network function of the core network.

[0321] In some embodiments, the first network function is a Session Management Function for the terminal, UE SMF; and the first device is a mobile base station with wireless backhaul, MWAB.

[0322] In some embodiments, the second network function is an Access and Mobility Management Function for the terminal, UE AMF.

[0323] FIG. 6a is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 6a, the embodiment of the present disclosure relates to a communication method, for a communication system 100, the method comprising one of the following steps:

[0324] Step S6101: The first network function sends first information to the second network function.

[0325] The optional implementation of step S6101 can be respectively seen in the optional implementation of step S2101 to S2103 of FIG. 2a and other associated parts in the embodiments related to FIG. 2a, which will not be repeated here.

[0326] Step S6102: The second network function sends the first information to the first device.

[0327] The optional implementation of step S6102 can be respectively seen in the optional implementation of step S2101 to S2103 of FIG. 2a and other associated parts in the embodiments related to FIG. 2a, which will not be repeated here.

[0328] In some embodiments, the above method can include the methods of the above embodiments of the communication system side, the first network function, the second network function, the first device, etc., which will not be repeated here.

[0329] In order to better understand the embodiments of the present disclosure, the following will be further illustrated by some exemplary embodiments:

[0330] In some embodiments, the BH PDU session of the N2 backhaul has been established.

[0331] Example 1:

[0332] Please refer to FIG. 7a, which shows a communication method, the method comprising:

[0333] Step S7101, the UE sends a PDU session establishment request to the MWAB-gNB, wherein the MWAB-gNB serves the UE.

[0334] Step S7102, the MWAB-gNB sends a PDU session establishment request to the serving AMF via N2 backhaul PDU session.

[0335] In some embodiments, the following information included in the N2 message to convey the NAS message can be used to indicate that the UE is accessing the network via the MWAB-gNB:

[0336] User location information, wherein the user location information includes a tracking area identity (TAI) of the MWAB-gNB collocated with the MWAB-UE, the location of the MWAB-UE can be included as additional user location information (ULI). Based on the user location information and / or the additional ULI, the AMF can determine that the UE is accessing the network via the MWAB-gNB if a specific TAI of the MWAB-gNB is configured and available at the AMF;

[0337] Access type information, the access type information indicates that the UE is accessing the network through the MWAB-gNB, the access type information can be realized by radio access technology (RAT) information;

[0338] MWAB access indication IE, if set to "true", indicates to the NG-RAN node that the UE access node is a MWAB-gNB.

[0339] In some embodiments, the information contained can also be address information of the MWAB-UE for the BH PDU session.

[0340] Step S7103, the AMF determines that the sender of the N2 message is the MWAB-gNB, and selects the SMF considering the MWAB access support.

[0341] Step S7104, the AMF invokes the Nsmf_PDUSession_CreateSMContext request service to send a PDU session establishment request to the SMF.

[0342] In some embodiments, the PDU session establishment request includes an indication indicating that the UE establishes the PDU session by accessing the network through the MWAB.

[0343] In some embodiments, the address information of the MWAB-UE can be included in the PDU session establishment request for the BH PDU session if available.

[0344] Step S7105, a UE context is created for the PDU session on the SMF. If available, the MWAB access information and the address information of the MWAB-UE are recorded.

[0345] Step S7106, the SMF selects a UPF taking into account the support of the MWAB.

[0346] Step S7107, the UE SMF sends a request to establish / modify N4 session to the UE UPF to establish the user plane. The request includes an indication that the UE establishes the PDU session through the MWAB access network.

[0347] Step S7108, the UE UPF sends a response to establish / modify N4 session to the UE SMF, which contains the core network tunnel information.

[0348] Step S7109, the UE SMF sends the CN tunnel information and the information related to the UE PDU session (corresponding to the first information) to the UE AMF.

[0349] In some embodiments, the information related to the UE PDU session includes: PDU session type, SSC mode and UE UPF address information.

[0350] Step S7110, the UE AMF sends an N2 message of N2 PDU session request with the CN tunnel information and the information related to the UE PDU session to the MWAB.

[0351] Step S7111, the MWAB triggers the creation or modification of the BH PDU session for N3 backhaul.

[0352] Step S7112, the BH PDU session is created or modified for N3 backhaul.

[0353] Step S7113, the (R)AN can perform specific signaling exchange with the UE related to the information received from the SMF.

[0354] Step S7114, the MWAB-gNB sends an N2 PDU session response to the AMF. The response includes the AN tunnel information for the MWAB access, and optionally includes the address information of the MWAB-UE for the BH PDU session.

[0355] Step S7115, the AMF invokes the Nsmf_PDUSession_UpdateSMContext request service to send an N2 message to the SMF. If available, the N2 message includes the tunnel information for the BH PDU session and the address information of the MWAB-UE.

[0356] Step S7116, the SMF initiates a N4 session modification procedure with the UPF. The SMF provides the tunnel information to the UPF and the corresponding forwarding rules for the data packets transmitted over the BH PDU session. The rules can be configured on the N3 UPF or PSA UPF, which will use the function according to the rules.

[0357] Step S7117, the UE SMF sends a session update context response to the UE AMF.

[0358] In the embodiments of the present disclosure, part or all of the steps, and optional implementation manners thereof, can be combined with part or all of the steps in other embodiments, or can be combined with optional implementation manners of other embodiments.

[0359] The embodiments of the present disclosure also propose 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 also proposed, comprising units or modules for implementing the steps performed by the network equipment (such as access network equipment, core network function node, core network equipment, etc.) in any of the above methods.

[0360] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to realize the functions of any of the above methods or the units or modules of the above apparatus, 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 apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of the hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship between the elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which 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 realize the functions of part or all of the units or modules. All units or modules of the above apparatus can be all implemented in the form of processor calling software, or all implemented in the form of hardware circuit, or part implemented in the form of processor calling software and the remaining part implemented in the form of hardware circuit.

[0361] In 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), and the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit. The logical relationship of the hardware circuit is fixed or reconfigurable. 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 a 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 part or all of the units or modules described above. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), and the like.

[0362] FIG. 8a is a structural schematic diagram of the first network function 8100 according to an embodiment of the present disclosure. As shown in FIG. 8a, the first network function 8100 can include at least one of a transceiver module 8101, a processing module 8102, and the like. In some embodiments, the transceiver module is configured to transmit and / or receive information. Optionally, the transceiver module is configured to perform at least one of the communication steps of transmitting and / or receiving performed by the first network function in any of the methods described above. Details are not described herein again. Optionally, the processing module is configured to perform at least one of the other steps performed by the first network function in any of the methods described above. Details are not described herein again.

[0363] FIG. 8b is a structural diagram of the second network function 8200 according to an embodiment of the present disclosure. As shown in FIG. 8b, the second network function 8200 can include at least one of a transceiver module 8201, a processing module 8202, and the like. In some embodiments, the transceiver module is configured to transceive information. Optionally, the transceiver module is configured to perform at least one of the steps of transmitting and / or receiving in the communication performed by the second network function in any of the methods described above, details of which are not described herein again. In some embodiments, the transceiver module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0364] FIG. 8c is a structural diagram of the first device 8300 according to an embodiment of the present disclosure. As shown in FIG. 8c, the first device 8300 can include at least one of a transceiver module 8301, a processing module 8302, and the like. In some embodiments, the transceiver module is configured to transceive information. Optionally, the transceiver module is configured to perform at least one of the steps of transmitting and / or receiving in the communication performed by the first device in any of the methods described above, details of which are not described herein again. In some embodiments, the transceiver module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0365] In some embodiments, the processing module can be a module or can include a plurality of sub-modules. Optionally, the plurality of sub-modules perform all or part of the steps required to be performed by the processing module, respectively. Optionally, the processing module can be mutually replaced with a processor.

[0366] FIG. 9a is a structural diagram of a communication device 9100 according to an embodiment of the present disclosure. The communication device 9100 can be a network device (such as an access network device, a core network device, and the like), a terminal (such as a user equipment, and the like), a chip, a chip system, or a processor supporting the network device to implement any of the methods described above, or a chip, a chip system, or a processor supporting the terminal to implement any of the methods described above. The communication device 9100 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.

[0367] As shown in FIG. 9a, the communication device 9100 includes one or more processors 9101. The processor 9101 can be a general purpose 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 (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, and the like), execute programs, and process data of the programs. The communication device 9100 is configured to execute any of the methods described above.

[0368] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 can also be outside the communication device 9100.

[0369] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the transceiver 9103 performs at least one of the communication steps (for example, step S2101, step S3101, but not limited to) in the above-described methods, and the processor 9101 performs at least one of the other steps.

[0370] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced with each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced with each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced with each other.

[0371] In some embodiments, the communication device 9100 can include one or more interface circuits 9104. Optionally, the interface circuit 9104 is connected to the memory 9102, and the interface circuit 9104 can be used to receive signals from the memory 9102 or other devices, and can be used to send signals to the memory 9102 or other devices. For example, the interface circuit 9104 can read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0372] The communication device 9100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 can not be limited by Figure 9a. 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, optionally, the set of ICs can 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, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0373] FIG. 9b is a structural schematic diagram of the chip 9200 according to an embodiment of the present disclosure. For the case that the communication device 9100 can be a chip or a chip system, the structural schematic diagram of the chip 9200 shown in FIG. 9b can be referred to, but is not limited thereto.

[0374] The chip 9200 comprises one or more processors 9201, and the chip 9200 is configured to execute any of the above methods.

[0375] In some embodiments, the chip 9200 further comprises one or more interface circuits 9202. Optionally, the interface circuit 9202 is connected with the memory 9203, and the interface circuit 9202 can be configured to receive signals from the memory 9203 or other devices, and the interface circuit 9202 can be configured to send signals to the memory 9203 or other devices. For example, the interface circuit 9202 can read instructions stored in the memory 9203 and send the instructions to the processor 9201.

[0376] In some embodiments, the interface circuit 9202 performs at least one of the communication steps (such as step S2101, step S3101, but not limited thereto) in the above methods, and the processor 9201 performs at least one of the other steps.

[0377] In some embodiments, the terms of interface circuit, interface, transceiver pin, transceiver, etc. can be replaced with each other.

[0378] In some embodiments, the chip 9200 further comprises one or more memories 9203 for storing instructions. Optionally, all or part of the memory 9203 can be outside the chip 9200.

[0379] The present disclosure further proposes a storage medium, and the above storage medium stores instructions, and when the above instructions are run on the communication device 9100, the communication device 9100 executes any of the above methods. Optionally, the above storage medium is an electronic storage medium. Optionally, the above storage medium is a computer readable storage medium, but is not limited thereto, and it can also be a storage medium readable by other devices. Optionally, the above storage medium can be a non-transitory storage medium, but is not limited thereto, and it can also be a transitory storage medium.

[0380] The present disclosure further proposes a program product, and when the above program product is executed by the communication device 9100, the communication device 9100 executes any of the above methods. Optionally, the above program product is a computer program product.

[0381] The present disclosure further proposes a computer program, and when the computer program is run on a computer, the computer executes any of the above methods.

Claims

1. A communication method, characterized in that: The method is performed by a first network function, and the method includes: Sending first information to the first device; The first information includes information related to a terminal protocol data unit UE PDU session, and the first information is used to create or modify a backhaul protocol data unit BH PDU session for N3 backhaul.

2. The method according to claim 1, characterized in that The sending the first information to the first device includes: sending the first information to the second network function; The second network function is used to send the first information to the first device.

3. The method according to claim 1 or 2, characterized in that The first information includes at least one of the following: Terminal user plane function UE UPF address information; Information about session and service continuity SSC mode; Information about the PDU session type.

4. The method according to claim 1, wherein The first network function is a session management function UE SMF of the terminal; the first device is a mobile base station MWAB with wireless backhaul.

5. The method according to claim 2, characterized in that The second network function is the terminal's access and mobility management function UE AMF.

6. A communication method, characterized in that: The method is performed by a second network function, and the method includes: receiving first information sent by the first network function; The first information includes information related to a terminal protocol data unit UE PDU session, and the first information is used to create or modify a backhaul protocol data unit BH PDU session for N3 backhaul.

7. The method according to claim 6, characterized in that The method further comprises: The first information is sent to the first device.

8. The method according to any one of claims 6 to 7, characterized in that The first information includes at least one of the following: Terminal user plane function UEUPF address information; Information about session and service continuity SSC mode; Information about the PDU session type.

9. The method according to claim 6, characterized in that The first network function is the session management function UE SMF of the terminal; the second network function is the access and mobility management function UE AMF of the terminal.

10. The method according to claim 7, characterized in that The first device is a mobile base station MWAB with wireless backhaul.

11. A communication method, characterized in that: The method is performed by a first device, and includes: receiving first information sent by the first network function; The first information includes information related to a terminal protocol data unit UE PDU session, and the first information is used to create or modify a backhaul protocol data unit BH PDU session for N3 backhaul.

12. The method according to claim 11, characterized in that The receiving the first information sent by the first network function includes: receiving first information sent by the second network function; The second network function is configured to send the first information received from the first network function to the second network function.

13. The method according to claim 11, characterized in that The method further comprises: The BH PDU session creation or modification is triggered based on the first information.

14. The method according to claim 11, characterized in that The first information includes at least one of the following: Terminal user plane function UEUPF address information; Information on session and service continuity SSC mode; Information about the PDU session type.

15. The method according to claim 13 or 14, characterized in that The method further comprises: creating or modifying the BH PDU session based on the first information and / or the second information; The second information includes at least one of the following: Data network name DNN; Single Network Slice Selection Assistance Information S-NSSAI.

16. The method according to claim 15, characterized in that The second information is configured by the operator server for the terminal or determined by the network function of the core network.

17. The method according to any one of claims 10 to 15, characterized in that The first network function is a session management function UE SMF of the terminal; the first device is a mobile base station MWAB with wireless backhaul.

18. The method according to claim 12, characterized in that The second network function is the terminal's access and mobility management function UE AMF.

19. A communication method, characterized in that: The method comprises: The first network function sends first information to the second network function; The second network function sends the first information to the first device; The first information includes information related to a terminal protocol data unit UE PDU session, and the first information is used to create or modify a backhaul protocol data unit BH PDU session for N3 backhaul.

20. A first network function, characterized in that The first network function includes: The transceiver module is configured as follows: Sending first information to the first device; The first information includes information related to a terminal protocol data unit UE PDU session, and the first information is used to create or modify a backhaul protocol data unit BH PDU session for N3 backhaul.

21. A second network device, characterized in that: The second network device includes: The transceiver module is configured as follows: receiving first information sent by the first network function; The first information includes information related to a terminal protocol data unit UE PDU session, and the first information is used to create or modify a backhaul protocol data unit BH PDU session for N3 backhaul.

22. A first device, characterized in that: The first device includes: The transceiver module is configured as follows: receiving first information sent by the first network function; The first information includes information related to a terminal protocol data unit UE PDU session, and the first information is used to create or modify a backhaul protocol data unit BH PDU session for N3 backhaul.

23. A communication system, characterized in that: The communication system includes a first network function, a second network function and a first device; the first network function is configured to implement the method according to any one of claims 1 to 5, the second network function is configured to implement the method according to any one of claims 6 to 10, and the first device is configured to implement the method according to any one of claims 11 to 18.

24. A first network function, characterized in that The first network function includes: one or more processors; The first network function is configured to execute the method according to any one of claims 1 to 5.

25. A second network function, characterized in that The second network function includes: one or more processors; The second network function is configured to execute the method according to any one of claims 6 to 10.

26. A first device, characterized in that: The first device includes: one or more processors; The first device is configured to execute the method according to any one of claims 11 to 18.

27. A storage medium, characterized in that The storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the method according to any one of claims 1 to 5, claims 6 to 10, or claims 11 to 18.

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