Wireless communication method and user terminal equipment

Abstract

The invention provides a wireless communication method and user terminal equipment, and the method comprises the steps: access side equipment is connected with a first path and a second path in the uplink direction through a logic interface, and achieves the forwarding of communication data on different paths according to a distribution strategy; wherein the first path provides data forwarding of the mobile communication network; the second path provides data forwarding of the wireless local area network; and the interface of the first path and the link layer channel of the second path are combined with the logic interface of the access side equipment, and communication is carried out through the uplink address of the access side equipment.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a wireless communication method and a user terminal device. Background Art

[0002] During wireless communication, the access side device provides uplink mobile communication network (5G) access and downlink output terminal device interconnection. In order to provide reliability on the wireless side in the above deployment scenario, an uplink wireless LAN (WiFi) module can be added to the access side device to connect the wireless access point (AP) and the wireless controller (AC), and then access the 5G core network (5GC) through the trusted wireless LAN network element. Although this allows the access side device to have dual uplink paths of the mobile communication network and the wireless LAN, in some scenarios, the access side terminal is required to use a fixed static IP address. For ordinary access side devices, the dual WAN interface (dual WAN port) composed of 5G and WIFI has two different IP addresses. Whether the export is changed by routing selection or active-standby switching, the IP address of the access side device will be changed, causing the entire transmission control protocol interface (TCP socket) to be interrupted and reconnected. Even after the IP is changed, the server cannot identify which access side device the IP belongs to, resulting in communication abnormalities. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a wireless communication method and a user terminal device, so as to solve the problem of communication anomalies caused by changes in IP address sending of access side devices.

[0004] The embodiment of the present application adopts the following technical solution: a wireless communication method, in which an access side device is connected to a first path and a second path in an uplink direction through a logical interface, and forwarding of communication data on different paths is realized according to a distribution strategy;

[0005] Wherein, the first path provides data forwarding for a mobile communication network;

[0006] The second path provides data forwarding for the wireless local area network;

[0007] The interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is performed through the uplink address of the access side device.

[0008] In some embodiments, the interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is performed through the uplink address of the access side device, further comprising:

[0009] separating the link layer and the transport layer of the second path;

[0010] The link layer channel of the second path is a member and forwarded with the interface of the first path through the uplink address of the access side device.

[0011] In some embodiments, the link layer channel of the second path is a member, and the interface of the first path forwards through the uplink address of the access side device, further comprising:

[0012] The access side device has only a unique uplink IP address;

[0013] The interface of the first path and the link layer channel of the second path both forward data through the unique uplink IP address;

[0014] In the case of a unique uplink IP address, the communication data is forwarded on different paths according to the distribution strategy, and upper layer applications will not be aware of the switching of the paths.

[0015] In some embodiments, the uplink address of the access side device further includes:

[0016] The uplink address of the access side device can be specified as an IP address, or

[0017] Assign a planned IP address from a remote server through the Dynamic Host Configuration Protocol.

[0018] In some embodiments, the method further comprises: establishing the first path comprises:

[0019] The access side device registers and accesses the core network of the mobile communication network system through a standard process of the mobile communication network, and completes the establishment of the first Ethernet PDU session;

[0020] The access side equipment, the radio access network of the mobile communication network and the core network of the mobile communication network system have the capability of providing Ethernet sessions.

[0021] In some embodiments, the method further includes: establishing the link channel of the second path includes:

[0022] The wireless LAN terminal is associated with the wireless access controller through the wireless access point.

[0023] The trusted wireless local area network access network element establishes a second Ethernet PDU session for the wireless local area network terminal and establishes a multi-segment forwarding link channel.

[0024] The wireless access controller is deployed in a transparent mode and provides connection between the trusted wireless local area network element and the core network of the mobile communication network system.

[0025] In some embodiments, the detection of different paths further comprises:

[0026] The first path and the second path use different encapsulation and forwarding strategies to send the detection request message sent by the access side device to the core network of the mobile communication network system;

[0027] In response to the probe request message, generating a response message;

[0028] Sending the response message back to the access side device;

[0029] When the access side device receives the response message of the corresponding path, the communication data is forwarded through the corresponding path.

[0030] In some embodiments, when the access side device receives a response message of the corresponding path, one of the two paths currently being used by the access side device is selected as the main path, and the other path is selected as the backup path, and the communication data is forwarded through the main path.

[0031] In some embodiments, upper layer applications are not aware of the switching of the path, further comprising:

[0032] When the communication data is switched from the first path to the second path for forwarding, the LAN address of the logical interface is learned in the second Ethernet PDU session;

[0033] The communication data is sent to the second path via the second Ethernet PDU session;

[0034] or, when the communication data is switched from the second path to the first path for forwarding, the LAN address of the logical interface is learned in the first Ethernet PDU session;

[0035] The communication data is sent to the first path through the first Ethernet PDU session.

[0036] An embodiment of the present application also provides a user terminal device that communicates using a wireless communication method as described in any of the above embodiments.

[0037] The beneficial effects of the embodiments of the present application are:

[0038] The access side device is connected to the first path and the second path in the upstream direction through a logical interface, and forwarding of communication data on different paths is realized according to the distribution strategy; the interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is carried out through the upstream address of the access side device, thereby improving the reliability of communication data transmission, and realizing that when the access side device is connected to different paths, the access side device has only one IP address in the upstream, and even when the path is switched, the upper-layer application will not perceive any changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 A flowchart of a wireless communication method for the present application;

[0041] Figure 2 A flowchart of a wireless communication method for implementing the present application;

[0042] Figure 3 For this application Figure 1 Flow chart of one embodiment of step S20 in FIG. DETAILED DESCRIPTION

[0043] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0044] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0045] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0046] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0047] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0048] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0049] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0050] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0051] To solve the problems in the background technology, an embodiment of the present application provides a wireless communication method, which is applied to an access side device, wherein the access side device may be, but is not limited to, a user terminal device (CPE: Customer Premise Equipment). As an access terminal, CPE can provide 5G and WiFi access uplink, and can provide interconnection of output terminal devices such as industrial equipment downlink. User terminal devices may be, but are not limited to, telephones, smart phones, tablet computers, laptops, televisions, monitors, and game consoles. Industrial equipment may be, but is not limited to, automated production lines, robots, sensors, control systems, etc. User terminal devices can remotely monitor and control industrial equipment, realize remote fault diagnosis and maintenance, etc., to improve the efficiency and reliability of industrial production.

[0052] Combination Figure 1 , the wireless communication method comprises:

[0053] S10, the access side device is connected to the first path and the second path in the uplink direction through a logical interface, and forwards the communication data on different paths according to the distribution strategy.

[0054] The first path provides data forwarding in a mobile communication network.

[0055] The second path provides data forwarding in the wireless local area network.

[0056] Exemplary, combined Figure 2, taking the access side device as a user terminal device as an example, a logical interface is defined and set on the user terminal device, and the logical interface is connected to the first path and the second path in the uplink direction. A logical interface is created in the access side device, and the logical interface is used to configure the uplink interface IP of the corresponding transport layer network, namely the CPE, on the logical interface. The first path here can be a 5G path, and the second path can be a WiFi path. That is, the first path can provide data forwarding for the mobile communication network, and the second path can provide data forwarding for the wireless local area network. The communication data on the user terminal device can be forwarded through the first path or the second path. The communication data can be generated by the user terminal device according to the needs of the internal program, etc., or it can be the user input value of the user terminal device. Of course, it can be understood that the communication data can also be generated in other ways. This is only used as an example and does not constitute a limitation on the scope of protection of the claims.

[0057] Communication data can be forwarded by user terminal devices on different paths according to the distribution strategy. For example, the user terminal device forwards communication data through the first path. During the forwarding process, if the first path fails, the user terminal device will not be able to continue to forward the communication data through the first path, and the communication may be interrupted. The user terminal device needs to reconnect the first path and the second path. At this time, if the second path can be used normally, the user terminal device can forward the communication data through the second path to ensure that the communication data can be sent normally, thereby ensuring the reliability of communication data transmission.

[0058] The communication data can be forwarded from the user terminal device to 5GC through the first path and the second path, and then sent to the server (SERVER) through 5GC.

[0059] S20: The interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is performed through the uplink address of the access side device.

[0060] Exemplarily, the first path and the second path in the uplink direction can be bound as members to the logical interface on the user terminal device. Specifically, the interface of the first path and the link layer channel of the second path can be aggregated with the logical interface of the access side device, so that the access side device can transmit communication data through an uplink address. In this way, even if the first path or the second path fails, the access side device can switch the path and forward the communication data through the switched path. Moreover, after the path is switched, the IP address of the communication data will not change. Therefore, even if the communication data is forwarded by the switched path, the upper layer application will not perceive any changes, and there will be no communication abnormality due to changes in the IP address.

[0061] The access side device of the embodiment of the present application is connected to the first path and the second path in the upstream direction through a logical interface, and forwarding of communication data on different paths is realized according to the distribution strategy; the interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is carried out through the uplink address of the access side device, thereby improving the reliability of communication data transmission, and realizing that when the access side device is connected to different paths, the access side device has only one IP address in the uplink, and even when the path is switched, the upper-layer application will not perceive any changes.

[0062] In some embodiments, Figure 3 As shown, the interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is performed through the uplink address of the access side device, further comprising:

[0063] S201, separating the link layer and the transport layer of the second path.

[0064] Exemplarily, the second path includes a link layer and a transport layer, and the separation of the link layer and the transport layer can be achieved by a layered design of the network protocol stack, which allows each layer to independently perform its specific functions while maintaining a clear interface with other layers.

[0065] Wireless LAN follows the open system interconnection model or the layered principle of the TCP / IP protocol stack, in which the link layer and the transport layer have different responsibilities.

[0066] The link layer is mainly responsible for data transmission on the physical medium, including frame encapsulation, addressing, error detection and correction, etc. In a wireless LAN, the link layer usually includes a logical link control sublayer and a medium access control sublayer. The logical link control sublayer provides connection-oriented and connectionless services, while the medium access control sublayer is responsible for handling medium access control.

[0067] The transport layer is located above the link layer and is mainly responsible for end-to-end data transmission, ensuring the reliability and order of data. In the TCP / IP protocol stack, the transport layer is mainly composed of the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP). TCP provides connection-oriented reliable transmission services, while UDP provides connectionless unreliable transmission services.

[0068] When sending communication data, the transport layer can encapsulate the application layer data into segments and add transport layer header information (such as source port number, destination port number, etc.). Then, the link layer further encapsulates the transport layer segments into frames and adds link layer header information (such as source MAC address, destination MAC address, etc.).

[0069] The link layer and the transport layer are separated by clearly defined service interfaces. These interfaces specify what services each layer can provide to the upper layer and how these services are called. For example, the transport layer can request the link layer to provide reliable data transmission services, and the link layer meets this requirement by implementing mechanisms such as CSMA / CA. The link layer can focus mainly on errors on the physical medium (such as bit errors), while the transport layer can focus mainly on end-to-end errors (such as segment loss, out-of-order, etc.). By separating the link layer and the transport layer of the second path, different types of errors can be located and resolved more effectively.

[0070] S202: The link layer channel of the second path serves as a member and forwards the information with the interface of the first path through the uplink address of the access side device.

[0071] For example, the link layer channel of the second path is bound to the logical interface as a member, and the link layer channel of the second path and the interface of the first path forward communication data through the uplink address of the access side device, so that the communication data forwarded from the access side device has the same IP address.

[0072] In some embodiments, the link layer channel of the second path is a member, and the interface of the first path forwards through the uplink address of the access side device, further comprising:

[0073] The access side device has only a unique uplink IP address. The interface of the first path and the link layer channel of the second path both forward data through the unique uplink IP address.

[0074] The uplink IP address of the access side device is unique and fixed. No matter whether the access side device forwards the communication data through the first path or the second path, the IP address of the access side device will not change. The interface of the first path and the link layer channel of the second path both forward the communication data through the unique uplink IP address of the access side device.

[0075] For example, when the access side device forwards the first communication data through the first path, the first path is unavailable, and the access side device can convert the first communication data to be forwarded through the second path. For example, when the first communication data is sent to the server, the server can identify the IP address as the corresponding access side device, and will not cause communication abnormality due to the change of the IP address causing the server to be unable to identify which access side device the IP address corresponds to.

[0076] Similarly, it can be understood that when the access side device switches from the second path to the first path to forward communication data, the IP address of the access side device will not change.

[0077] The first path and the second path may be abnormal due to communication hardware failure, abnormal network environment or human factors, resulting in the first path and the second path being unavailable, and the access side device being unable to forward communication data through the corresponding path.

[0078] In the case of a unique uplink IP address, the communication data is forwarded on different paths according to the distribution strategy, and upper layer applications will not be aware of the switching of the paths.

[0079] Continuing with the above embodiment, since the uplink IP address of the access side device will not change due to the switching of the path, therefore, when the communication data is forwarded on different paths according to the distribution strategy, for upper layer applications such as servers, the server relies on identifying the IP address to identify and confirm the access side device that sends the communication data. As long as the server can identify the unique uplink IP address and can determine the access side device that sends the communication data based on the uniquely determined IP address. Therefore, for the upper layer application, no matter which path the communication data is forwarded through, whether there is a path switching during the forwarding process of the communication data, the upper layer application will not perceive the path switching, which is conducive to the smoothness of the communication data transmission and will not cause a bad experience to the user during use.

[0080] In some embodiments, the uplink address of the access side device further includes:

[0081] The uplink address of the access side device may be specified and configured as an IP address, for example, an IP address may be specified and configured for the access side device manually or automatically, and the IP address serves as the only uplink IP address of the access side device.

[0082] Or the uplink address of the access side device is assigned a planned IP address from the remote server through the Dynamic Host Configuration Protocol (DHCP). For example, if the remote server has multiple IP addresses, a planned IP address is obtained from the remote server through DHCP and configured as the only uplink IP address of the access side device.

[0083] The process of obtaining an IP address includes:

[0084] When the logical interface is configured to obtain an IP address through DHCP, when the Dynamic Host Configuration Protocol is sent from the first path, it can be sent from N6 of 5GC by the first Ethernet PDU session, and the Dynamic Host Configuration Protocol server at the back end responds with a Dynamic Host Configuration Protocol offer message, which is sent from the first Ethernet PDU session to the first path of PEC by 5GC. Similarly, the subsequent Dynamic Host Configuration Protocol request message and Dynamic Host Configuration Protocol offer message complete the interaction to obtain an IP address. Among them, the Dynamic Host Configuration Protocol offer message is a message sent by the DHCP server to the DHCP client during the DHCP protocol interaction process.

[0085] When the logical interface is configured to obtain an IP address through Dynamic Host Configuration Protocol, when the Dynamic Host Configuration Protocol is sent from the second path, the AP encapsulates the Dynamic Host Configuration Protocol in CAPWAP and sends it to the AC. The AC decapsulates it and sends it to TWIF. TWIF finds the corresponding second Ethernet PDU session through MAC and sends it to N6 of 5GC for transfer. The back-end Dynamic Host Configuration Protocol server responds with a Dynamic Host Configuration Protocol offer, which is sent by 5GC from Ethernet PDU to TWIF. After decapsulating GTP-U, it is sent to AC and AP according to the MAC address, and then reaches the second path. Similarly, the subsequent Dynamic Host Configuration Protocol request and Dynamic Host Configuration Protocol offer complete the interaction and obtain the IP address.

[0086] In some embodiments, the method further comprises: establishing the first path, wherein the establishing the first path comprises:

[0087] The access side device registers and accesses the core network of the mobile communication network system through the mobile communication network standard process, and completes the establishment of the first Ethernet PDU session.

[0088] The access side equipment, the radio access network of the mobile communication network and the core network of the mobile communication network system have the capability of providing Ethernet sessions.

[0089] The first path requires CPE, the radio access network (RAN) of the mobile communication network, and 5GC provides Ethernet session capabilities. Here, the CPE's 5G SIM card signs an Ethernet session with the 5GC core network. The CPE registers and accesses the 5G core network through the 5G standard process, and automatically completes the establishment of the first Ethernet PDU (Ethernet PDU) session.

[0090] In some embodiments, the method further includes: establishing a link channel of the second path, wherein the establishing of the second channel includes:

[0091] The wireless local area network terminal is associated with the wireless access controller through the wireless access point. The wireless access controller is deployed in transparent mode and provides a connection between the trusted wireless local area network element and the core network of the mobile communication network system.

[0092] The link channel of the second path is included in the core network, which requires the wireless controller (AC) to be deployed in transparent mode and provide a trusted wireless LAN (TWIF: Trusted WLAN Interworking Function) network element to connect with the 5GC.

[0093] The trusted wireless local area network access network element establishes a second Ethernet PDU session for the wireless local area network terminal and establishes a multi-segment forwarding link channel.

[0094] When the wireless LAN terminal connects to the AP and associates to the AC, the AC uses the MAC of the terminal to notify TWIF to establish an Ethernet PDU session for the wireless LAN terminal. Finally, a multi-segment forwarding link is formed: CPE uses the wireless LAN air interface (the air interface can be understood as the virtual logical interface on the AP and STA) to forward to AP1, AP1 uses the control and configuration protocol of wireless access points (CAPWAP: Control And Provisioning of Wireless Access Points Protocol Specification) tunnel to forward to AC, AC transparently transmits the communication data to TWIF, and TWIF uses the GTP-U (GPRS tunneling protocol for the user plane: the GPRS tunnel protocol at the user level) tunnel to forward to the user interface function (UPF: User Plane Function) of 5GC. Specifically, it can be forwarded to the N3 interface of UPF. The N3 interface is the interface between 5G RAN and UPF, which is mainly used to transmit uplink and downlink user plane data between 5G RAN and UPF.

[0095] In some embodiments, the detection of different paths further comprises:

[0096] The first path and the second path use different encapsulation and forwarding strategies to send the detection request message sent by the access side device to the core network of the mobile communication network system.

[0097] In response to the probe request message, a response message is generated.

[0098] The response message is sent back to the access side device.

[0099] When the access side device receives the response message of the corresponding path, the communication data is forwarded through the corresponding path.

[0100] Exemplarily, a link detection mechanism is implemented on the CPE, and detection request messages are periodically sent outward in different paths connected to the CPE, for example, once every 0.1 seconds. If no response is received three times, it is determined that the path is faulty. The effective range is the link interface of each path, for example, the interface of the first path and the link channel interface of the second path.

[0101] Among them, the detection of the first path includes: sending a detection request message from the link channel of the first path to the first Ethernet PDU session, forwarding it to the UPF after being encapsulated by the base station GTP, and after the UPF decapsulates the GTP, it identifies the broadcast and Ethernet protocol number 0xffe1 to generate a detection response message, which is encapsulated in the first Ethernet PDU session and sent back to the base station, and then forwarded to the first path of the CPE. At this time, the terminal can determine that the first path is available.

[0102] Detection of the second path: The link channel of the wireless LAN sends a detection request message to the AP, which is encapsulated by CAPWAP and forwarded to the AC. After decapsulation, the AC sends the detection request message to TWIF. TWIF encapsulates the detection request message from the corresponding second Ethernet PDU session GTP to UPF through the SMAC protocol. After decapsulation of GTP, UPF identifies the broadcast and Ethernet protocol number 0xffe1 to generate a detection response message, which is encapsulated in the second Ethernet PDU session and sent back to TWIF. After decapsulation of GTP-U, TWIF sends the response message to AC. AC sends the response message to the corresponding AP through MAC, and finally reaches the second path of CPE. At this time, it can be determined that the second path is available. Among them, the SMAC protocol is a sensor network MAC protocol proposed based on the 802.11MAC protocol to save energy for sensor networks.

[0103] When the access side device receives a response message of the corresponding path, the communication data is forwarded through the corresponding path. That is, when the access side device receives a response message of the first path, the communication data can be forwarded through the first path; when the access side device receives a response message of the second path, the communication data can be forwarded through the second path.

[0104] Probe request message:

[0105] Destination MAC FF-FF-FF-FF-FF-FF Source MAC MAC address of the member network card Ethernet protocol number 0xffe1 Serial Number 0x0001–0xfffff Vendor Lenovo Type 0x00(request)

[0106] Probe response message:

[0107] Destination MAC MAC address of the member network card Source MAC UPFN3 MAC Ethernet protocol number 0xffe1 Serial Number 0x0001–0xfffff Vendor Lenovo Type 0x01(response)

[0108] In some embodiments, when the access side device receives a response message of the corresponding path, one of the two paths currently being used by the access side device is selected as the main path, and the other path is selected as the backup path, and the communication data is forwarded through the main path.

[0109] Exemplarily, a logical interface is created in the CPE, and the interface is used to correspond to the transport layer network, that is, the uplink interface IP of the CPE is configured on the interface. At the same time, the logical interface can formulate a member master-slave mechanism, and the link channels of the first path and the second path are respectively bound as members to the logical interface. At this time, the CPE has dual uplink paths, and any one path can be designated as the main path, and the other path can be designated as the backup path. Of course, it is understandable that the master and backup paths can be designated according to the above-mentioned master-slave strategy when the CPE starts to forward communication data.

[0110] When the logical interface generates a data packet to be distributed, the packet is distributed to the main path (the source MAC address of the data packet generated by the logical interface should be the MAC address of the logical interface). In the process of forwarding communication data, according to the path detection result, when the access side device receives the response message of the corresponding path, one of the first and second paths that the access side device is using is selected as the main path, and the other path is selected as the backup path. The communication data is forwarded through the main path. When the main path fails, the other backup path is automatically activated as the main path. At this time, the communication data can be forwarded through the backup path converted to the main path.

[0111] In some embodiments, upper layer applications are not aware of the switching of the path, further comprising:

[0112] When the communication data is switched from the first path to the second path for forwarding, the local area network address of the logical interface is learned in the second Ethernet PDU session.

[0113] The communication data is sent to the second path through the second Ethernet PDU session.

[0114] or, when the communication data is switched from the second path to the first path for forwarding, the LAN address of the logical interface is learned in the first Ethernet PDU session;

[0115] The communication data is sent to the first path through the first Ethernet PDU session.

[0116] For example, when the CPE uses 5G link forwarding, the MAC address of the logical interface is learned in the first Ethernet PDU of the 5GC. When N6 receives the service response message, it is forwarded to the base station from the first Ethernet PDU session according to the MAC, and finally reaches the first path.

[0117] When the first path detects a fault, CPE distributes the data of the logical interface to the link channel of the second path, and finally learns the MAC in the second Ethernet PDU session. When N6 receives the service response message, it sends it from the second Ethernet PDU session to TWIF according to the MAC, and finally reaches the second path. At this time, the user side and the server side have no perception of the entire fault switching process, and the MAC address and IP address have no change.

[0118] The embodiment of the present application also provides a user terminal device, which can communicate using the wireless communication method described in any of the above embodiments. So that the communication data of the user terminal device can be forwarded through different paths with the same IP address without causing the upper-layer application to perceive the switching of the path. The access side device may be, but is not limited to, a user terminal device (CPE: Customer Premise Equipment). As an access terminal, CPE can provide 5G and WiFi access uplink and can provide interconnection of output terminal devices such as industrial equipment downlink. The user terminal device may be, but is not limited to, a telephone, a smart phone, a tablet computer, a laptop computer, a television, a monitor, and a game console. Industrial equipment may be, but is not limited to, automated production lines, robots, sensors, control systems, etc. The user terminal device can remotely monitor and control industrial equipment, realize remote fault diagnosis and maintenance, etc., to improve the efficiency and reliability of industrial production.

[0119] Several embodiments of the present application have been described in detail above, but the present application is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concept of the present application, and these variations and modifications should all fall within the scope of protection claimed by the present application.

Claims

1. A wireless communication method, The access side device is connected to the first path and the second path in the uplink direction through a logical interface, and forwards the communication data on different paths according to the distribution strategy; in, The first path provides data forwarding in a mobile communication network; The second path provides data forwarding for the wireless local area network; The interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is performed through the uplink address of the access side device.

2. The wireless communication method according to claim 1, wherein the interface of the first path and the link layer channel of the second path are aggregated with the logical interface of the access side device, and communication is performed through the uplink address of the access side device, further comprising: separating the link layer and the transport layer of the second path; The link layer channel of the second path is a member and forwarded with the interface of the first path through the uplink address of the access side device.

3. The wireless communication method according to claim 2, wherein the link layer channel of the second path is used as a member and the interface of the first path is forwarded through the uplink address of the access side device, further comprising: The access side device has only a unique uplink IP address; The interface of the first path and the link layer channel of the second path both forward data through the unique uplink IP address; In the case of a unique uplink IP address, the communication data is forwarded on different paths according to the distribution strategy, and upper layer applications will not be aware of the switching of the paths.

4. The wireless communication method according to claim 1 or 3, wherein the uplink address of the access side device further comprises: The uplink address of the access side device can be specified as an IP address, or Assign a planned IP address from a remote server through the Dynamic Host Configuration Protocol.

5. The wireless communication method according to claim 2, further comprising: The establishment of the first pathway comprises: The access side device registers and accesses the core network of the mobile communication network system through a standard process of the mobile communication network, and completes the establishment of the first Ethernet PDU session; The access side equipment, the radio access network of the mobile communication network and the core network of the mobile communication network system have the capability of providing Ethernet sessions.

6. The wireless communication method according to claim 2, further comprising: The establishment of the link channel of the second path includes: The wireless LAN terminal is associated with the wireless access controller through the wireless access point; The trusted wireless local area network access network element establishes a second Ethernet PDU session for the wireless local area network terminal and establishes a multi-segment forwarding link channel; The wireless access controller is deployed in a transparent mode and provides connection between the trusted wireless local area network element and the core network of the mobile communication network system.

7. The wireless communication method according to claim 1, further comprising: The detection of different pathways includes: The first path and the second path use different encapsulation and forwarding strategies to send the detection request message sent by the access side device to the core network of the mobile communication network system; In response to the probe request message, generating a response message; Sending the response message back to the access side device; When the access side device receives the response message of the corresponding path, the communication data is forwarded through the corresponding path.

8. According to the wireless communication method of claim 7, when the access side device receives a response message of the corresponding path, one of the two paths currently being used by the access side device is selected as the main path, and the other path is selected as the backup path, and the communication data is forwarded through the main path.

9. The wireless communication method according to claim 5 and 6, wherein upper layer applications are not aware of the switching of the path, further comprising: When the communication data is switched from the first path to the second path for forwarding, the LAN address of the logical interface is learned in the second Ethernet PDU session; The communication data is sent to the second path via the second Ethernet PDU session; or, when the communication data is switched from the second path to the first path for forwarding, the LAN address of the logical interface is learned in the first Ethernet PDU session; The communication data is sent to the first path through the first Ethernet PDU session.

10. A user terminal device, communicating using the wireless communication method according to any one of claims 1 to 9.

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