Method and system for snpn continuity handover for port activities

Abstract

The application discloses a SNPN continuity switching method and system for port activities, comprising: arranging MEC network elements and a wireless access network in the port; after a ship UE enters the range of a port SNPN, sequentially reporting the state information and UE session information of the ship UE from the wireless access network and the MEC network element to the port SNPN; the port SNPN analyzes the state information of the ship UE in real time to determine whether the SNPN of the ship UE needs to be switched to the port SNPN in the future, if yes, establishing the user session information of the ship UE according to the UE session information, and sending the established user session information and the connection information of the port SNPN to the wireless access network; the wireless access network opens the uplink from the wireless access network to the port SNPN and feeds back the establishment information of the user session to the ship UE; the ship UE saves the feedback establishment information, so that the ship UE can perform business processing in the port SNPN according to the uplink after arriving at the port, and the continuity switching of the SNPN is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of 5G communication, in particular to a SNPN continuity switching method and system for port activities. BACKGROUND

[0002] By deploying a SNPN at the port to provide dedicated network services, supporting the inherent business digital operations (interface, loading / unloading, security, etc.) of port activities, since existing ships also deploy SNPN to support similar services provided on ships during sailing between ports, the ship UE using the SNPN of the ship at sea needs to use the SNPN of the port when it is at the wharf, and all need to seamlessly transition from the SNPN of the ship to the SNPN of the port without interrupting the dedicated network service.

[0003] However, the prior art may cause service interruption during the switching process, especially in the case of high-speed movement, such as when a ship enters a port, which can be particularly evident, so it is impossible to guarantee the continuity of the service during interconnection. Therefore, there is an urgent need for a SNPN continuity switching method and system for port activities that can ensure the continuity of SNPN switching. SUMMARY

[0004] The purpose of the present application is to provide a SNPN continuity switching method and system for port activities, which can enable the continuity switching of SNPN for ships in the port.

[0005] In order to achieve the above-mentioned purpose, the present application discloses a SNPN continuity switching method for port activities, comprising: arranging MEC network elements and a radio access network at the port; after the ship UE enters the range of the port SNPN, reporting the state information and UE session information of the ship UE to the port SNPN, the radio access network receives the reported state information and UE session information of the ship UE and uploads the state information and UE session information of the ship UE to the port SNPN through the MEC network element; the port SNPN analyzes the state information of the ship UE in real time to determine whether the ship UE needs to switch to the port SNPN in the future, if so, establish the user session information of the ship UE according to the UE session information, and send the established user session information and the connection information of the port SNPN to the radio access network, the radio access network opens the uplink from the radio access network to the port SNPN and feeds back the establishment information of the user session to the ship UE, and the ship UE saves the feedback establishment information, so that the ship UE can perform business processing in the port SNPN according to the uplink after it arrives at the port.

[0006] Preferably, the port SNPN has a control plane and a UPF network element, the UPF network element obtains the state information and the UE session information of the ship UE from the MEC network element, analyzes the state information of the ship UE in real time to determine whether the ship UE needs to be handed over to the port SNPN in the future, establishes the user session information of the ship UE if yes, and transmits the established user session information and the connection information of the UPF network element to the control plane; the control plane requests the radio access network to allocate resources according to the user session information and sends the connection information of the UPF network element to the radio access network, and the radio access network opens the uplink from the radio access network to the UPF network element according to the request of allocating resources and the connection information of the UPF network element.

[0007] Specifically, the control plane includes an AMF network element and an SMF network element.

[0008] Specifically, the UPF network element transmits the established UE session information and the connection information of the UPF network element to the control plane through an N4 interface, the control plane sends the connection information of the UPF network element to the radio access network through an N2 interface, opens the uplink from the radio access network to the UPF network element, and the uplink is established through an N3 interface.

[0009] Preferably, the radio access network obtains the wireless signal of the ship UE in real time, uploads the wireless signal to the port SNPN through the MEC network element, so that the port SNPN confirms the positioning information of the ship UE according to the wireless signal, and the positioning information includes the direction and speed of the ship UE.

[0010] Preferably, the state information of the ship UE includes the real-time position, speed information and driving route of the ship UE.

[0011] Specifically, the port SNPN determines whether the ship UE is within a preset distance of the port SNPN and moves towards the port SNPN according to the real-time position, speed information and driving route of the ship UE, and determines that the ship UE needs to be handed over to the port SNPN in the future if yes.

[0012] Specifically, the port SNPN determines whether the ship UE moves towards the port SNPN according to the real-time position, speed information and driving route of the ship UE, and predicts whether the duration of the ship UE within the preset distance of the port SNPN is greater than or equal to a first preset time length, and determines that the ship UE needs to be handed over to the port SNPN in the future if yes.

[0013] Specifically, the port SNPN determines whether the ship UE moves towards the port SNPN direction according to the real-time position, speed information and driving route of the ship UE, and predicts whether the ship UE will reach the port within a second preset time length, and if so, determines that the ship UE needs to be handed over to the port SNPN in the future.

[0014] Preferably, the port SNPN authorizes the ship UE entering the range of the port SNPN to obtain the state information and UE session information of the ship UE.

[0015] The application also discloses an SNPN continuity handover system for port activities, characterized in that it comprises a port SNPN, a MEC network element arranged in the port, a radio access network and a ship UE, wherein the port SNPN, the MEC network element, the radio access network and the ship UE are respectively provided with a memory, a processor and one or more execution instructions stored in the memory, and the execution instructions can make the processor execute the corresponding operations of the SNPN continuity handover method for port activities as described above.

[0016] Compared with the prior art, the application synchronizes the state information and UE session information of the ship UE to the port SNPN in combination with the radio access network and the MEC network element, so that the real-time analysis module in the port SNPN analyzes the above data, establishes necessary user plane session information and uplink for the ship UE in advance, ensures that the ship UE can directly connect to the port SNPN for service after reaching the port, and guarantees the full use of resources and the service continuity (minimum service interruption) of the special network communication during the interconnection of the port SNPN and the ship SNPN. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural diagram of the SNPN continuity handover system for port activities of the application.

[0018] Figure 2 is a flowchart of the SNPN continuity handover method for port activities of the application. DETAILED DESCRIPTION

[0019] To illustrate the technical content, structural features, achieved purposes and effects of the application, the following will be described in detail in combination with the embodiments and the accompanying drawings.

[0020] REFERENCE Figure 1 and Figure 2The present invention discloses a SNPN continuity switching method for port activities, which is used for a ship UE 10 to switch between a ship SNPN and a port SNPN 40 after arriving at a port, including: deploying an MEC network element 30 and a wireless access network 20 at the port. The SNPN continuity switching method includes steps S11 to S16.

[0021] S11, after the ship UE10 enters the range of the port SNPN40, the ship UE10 reports the status information and UE session information of the ship UE10 to the port SNPN40. After the wireless access network 20 receives the status information and UE session information of the ship UE10, it uploads the status information and UE session information of the ship UE10 to the port SNPN through the MEC network element 30.

[0022] S12, the port SNPN 40 analyzes the status information of the ship UE in real time to determine whether the ship UE 10 needs to be switched to the port SNPN 40 in the future.

[0023] Among them, the judgment of whether the ship UE10 needs to switch to port SNPN40 in the future specifically includes whether the ship UE10 will dock at port SNPN40, whether the duration of the ship UE10 at the preset distance of port SNPN40 will be greater than or equal to the first preset time length, whether the ship UE10 will arrive at the port within the second preset time length, etc., representing one or more situations in which the ship UE10 may need to switch to port SNPN40 in the foreseeable future.

[0024] S13: If yes, establish the user session information of the ship UE10 according to the UE session information.

[0025] S14 , sending the established user session information and the connection information of the port SNPN to the wireless access network 20 .

[0026] S15 , the radio access network 20 opens an uplink from the radio access network 20 to the port SNPN, and feeds back user session establishment information to the ship UE 10 .

[0027] S16, the ship UE10 saves the feedback establishment information, so that the ship UE10 can perform service processing at the port SNPN according to the uplink after arriving at the port.

[0028] The port SNPN 40 has a control plane 42 and a UPF network element 41. Specifically, the control plane 42 includes an AMF network element and an SMF network element. The AMF network element (Access and Mobility Function) is responsible for access and mobility management functions (AMF) and is the main functional unit of 5GC, which completes the access and mobility management of terminal users. The SMF network element (Session Management Function) is responsible for session management with user equipment. The UPF network element (User Plane Function) is responsible for processing user plane data, load balancing, and routing of data packets. The MEC network element (Multi-access / Mobile Edge Computing) is a multi-access mobile edge computing network element. The radio access network is a Radio Access Network, RAN network element. SNPN (Stand-alone Non-public Network) is an independent non-public network.

[0029] Specifically, the UPF network element 41 has a real-time data analysis module embedded therein, which obtains the state information and UE session information of the ship UE 10 from the MEC network element 30, analyzes the state information of the ship UE 10 in real time to determine whether the ship UE 10 needs to be handed over to the port SNPN 40 in the future, establishes user session information of the ship UE 10 if so, and transmits the established user session information and connection information of the UPF network element 41 to the control plane 42; the control plane 42 requests the radio access network 20 to allocate resources according to the user session information and sends the connection information of the UPF network element 41 to the radio access network 20, and the radio access network 20 opens the uplink from the radio access network 20 to the UPF network element 41 according to the request for allocating resources and the connection information of the UPF network element 41.

[0030] Reference Figure 1 The UPF network element 41 transmits the established UE session information and the connection information of the UPF network element 41 to the control plane 42 through an N4 interface, the control plane 42 sends the connection information of the UPF network element 41 to the radio access network 20 through an N2 interface, opens the uplink from the radio access network 20 to the UPF network element 41, and the uplink is established through an N3 interface.

[0031] Preferably, the wireless access network 20 acquires the wireless signal of the ship UE 10 in real time, uploads the wireless signal to the port SNPN 40 through the MEC network element 30, so that the port SNPN 40 confirms the positioning information of the ship UE 10 according to the wireless signal, so as to calibrate the driving condition of the propagation UE determined according to the state information of the ship UE 10, and the positioning information includes the direction and speed of the ship UE 10.

[0032] Preferably, the state information of the ship UE 10 includes the real-time position, speed information and driving route of the ship UE 10, and the UE session information includes the IP address of the ship UE and other related parameters.

[0033] In an embodiment, the port SNPN determines whether the ship UE 10 is within a preset distance of the port SNPN and moves towards the port SNPN according to the real-time position, speed information and driving route of the ship UE 10, and if so, it is determined that the ship UE 10 needs to be handed over to the port SNPN 40 in the future.

[0034] In another embodiment, the port SNPN determines whether the ship UE 10 moves towards the port SNPN according to the real-time position, speed information and driving route of the ship UE 10, and predicts whether the duration of the ship UE 10 being within a preset distance of the port SNPN is greater than or equal to a first preset time, and if so, it is determined that the ship UE 10 needs to be handed over to the port SNPN 40 in the future.

[0035] In yet another embodiment, the port SNPN determines whether the ship UE 10 moves towards the port SNPN according to the real-time position, speed information and driving route of the ship UE 10, and predicts whether the ship UE 10 will reach the port within a second preset time, and if so, it is determined that the ship UE 10 needs to be handed over to the port SNPN 40 in the future.

[0036] Of course, the method of determining whether the ship UE 10 needs to be handed over to the port SNPN 40 in the future can be any combination of the above methods.

[0037] The port SNPN 40 will perform identity verification and information acquisition with the ship UE 10 entering the range of the port SNPN 40 to require the ship UE 10 to report its own state information and UE session information. Specifically, the identity verification module of the port SNPN 40 will send a request for identity verification to the ship UE 10 when the ship UE 10 enters the range of the port SNPN 40, and the ship UE 10 will send the state information and UE session information of the ship UE 10 to the port SNPN 40 according to the request for identity verification after verifying the identity of the port SNPN 40. The identity verification module of the port SNPN 40 acquires the state information and UE session information of the ship UE 10 through its own communication link, while the radio access network 20 also receives the state information and UE session information of the ship UE 10 sent by the ship UE 10, and sends the state information and UE session information of the ship UE 10 to the UPF network element 41 through the MEC network element 30.

[0038] Reference Figure 1 The application also discloses an SNPN continuity handover system for port activities, comprising a port SNPN 40, a MEC network element 30 arranged in the port, a radio access network 20 and a ship UE 10. The port SNPN 40, the MEC network element 30, the radio access network 20 and the ship UE 10 are respectively provided with a memory, a processor and one or more execution instructions stored in the memory. The execution instructions can make the processor execute the corresponding operations of the SNPN continuity handover method for port activities as described above.

[0039] Reference Figure 1 And Figure 2 The specific steps of the SNPN continuity handover method of the application are described as follows:

[0040] 1. After the ship UE 10 enters the range of the port SNPN 40, the ship UE 10 and the port SNPN 40 perform corresponding identity verification and authorization, and then the ship UE 10 sends the state information and UE session information of the ship UE 10 to the radio access network 20 of the port SNPN 40.

[0041] 2. The radio access network 20 forwards the state information and UE session information of the ship UE 10 to the MEC network element 30.

[0042] 3. The MEC network element 30 forwards the state information and UE session information of the ship UE 10 sent by the radio access network 20 to the UPF network element 41 of the port SNPN 40.

[0043] 4. The UPF network element 41 has a real-time data analysis module, which analyzes the state information of the ship UE 10 in real time to determine whether the ship UE 10 needs to be handed over to the port SNPN in the future. If yes, the next step is performed, and if no, it returns to continue analysis.

[0044] 5. The UPF network element 41 establishes the user session information of the ship UE 10 when the ship UE 10 needs to be handed over in the future.

[0045] 6. The UPF network element 41 transmits the established user session information and the connection information of the UPF network element 41 to the control plane 42.

[0046] 7. The control plane 42 requests the radio access network 20 to allocate resources according to the user session information and sends the connection information of the UPF network element 41 to the radio access network 20.

[0047] 8. The radio access network 20 opens the uplink (N3 interface) from the radio access network 20 to the UPF network element 41 according to the request for allocating resources and the connection information of the UPF network element 41, thereby accepting the establishment of the user session.

[0048] 9. The radio access network 20 feeds back the establishment information of the user session to the ship UE 10.

[0049] 10. The ship UE 10 saves the necessary information in the establishment information of the user session fed back by the radio access network 20, so that the ship UE 10 establishes a connection with the port SNPN 40.

[0050] 11. When the ship UE 10 needs to be handed over for related business operations after arriving at the port, it can directly process the business in the port SNPN 40 according to the uplink, without waiting for the establishment of the user session and the opening of the link.

[0051] In the above process, the SNPN handover is non-stop, so the ship UE 10 has no awareness of the SNPN handover, ensuring the user experience and the continuity of the service.

[0052] Compared with the prior art, the present application synchronizes the state information of the ship UE 10 and the UE session information to the port SNPN 40 in combination with the radio access network 20 and the MEC network element 30, so that the real-time analysis module in the port SNPN 40 analyzes the above data, establishes the necessary user plane session information and uplink for the ship UE 10 in advance, ensures that the ship UE 10 can directly connect to the port SNPN 40 for business services after arriving at the port, and guarantees the full utilization of resources and the service continuity (minimum service interruption) of the special network communication during the interconnection of the port SNPN 40 and the ship SNPN.

[0053] The above-described embodiments are merely preferred embodiments of the present application, and thus are not intended to limit the scope of the present application. Therefore, various equivalents for the technical features and changes in the configuration of the present application are included in the scope of the present application.

Claims

1. A SNPN continuity switching method for port activities, characterized by: The application relates to a method for realizing a ship UE to switch to a port SNPN. The method comprises the following steps: arranging a MEC network element and a wireless access network in a port; after a ship UE enters a range of the port SNPN, the ship UE reports state information and UE session information of the ship UE to the port SNPN, the wireless access network receives the reported state information and UE session information of the ship UE and uploads the state information and UE session information of the ship UE to the port SNPN through the MEC network element; the port SNPN analyzes the state information of the ship UE in real time to determine whether the ship UE needs to switch to the port SNPN in the future, if yes, user session information of the ship UE is established according to the UE session information, and the established user session information and connection information of the port SNPN are sent to the wireless access network, the wireless access network opens an uplink from the wireless access network to the port SNPN and feeds back the establishment information of the user session to the ship UE, and the ship UE saves the feedback establishment information, so that the ship UE can perform business processing in the port SNPN according to the uplink after reaching the port; the port SNPN has a control plane and a UPF network element, the UPF network element obtains the state information and UE session information of the ship UE from the MEC network element, analyzes the state information of the ship UE in real time to determine whether the ship UE needs to switch to the port SNPN in the future, if yes, user session information of the ship UE is established, and the established user session information and connection information of the UPF network element are transmitted to the control plane; the control plane requests the wireless access network to allocate resources according to the user session information and sends the connection information of the UPF network element to the wireless access network, and the wireless access network opens an uplink from the wireless access network to the UPF network element according to the request of allocating resources and the connection information of the UPF network element; 2. The SNPN continuity handover method for port activities of claim 1, wherein: the UPF network element transmits the established UE session information and the connection information of the UPF network element to the control plane through an N4 interface, the control plane sends the connection information of the UPF network element to the wireless access network through an N2 interface, opens the uplink from the wireless access network to the UPF network element, and the uplink is established through an N3 interface.

3. The SNPN continuity handover method for port activities of claim 1, wherein: The control plane comprises an AMF network element and an SMF network element.

4. The SNPN continuity handover method for port activities of claim 1, wherein: The wireless access network obtains wireless signals of the ship UE in real time, uploads the wireless signals to the port SNPN through the MEC network element, so that the port SNPN confirms positioning information of the ship UE according to the wireless signals, and the positioning information comprises a direction and a speed of the ship UE.

5. The SNPN continuity handover method for port activities of claim 4, wherein: The state information of the ship UE comprises real-time position, speed information and travel route of the ship UE. The port SNPN determines whether the ship UE is within a preset distance of the port SNPN and moves towards the port SNPN according to the real-time position, speed information and travel route of the ship UE, if yes, it is determined that the ship UE needs to switch to the port SNPN in the future.

6. The SNPN continuity handover method for port activities of claim 4, wherein: The port SNPN determines whether the ship UE moves towards the port SNPN according to real-time position, speed information and driving route of the ship UE, and predicts whether the duration of the ship UE within a preset distance of the port SNPN is greater than or equal to a first preset time length, and if yes, determines that the ship UE needs to be handed over to the port SNPN in the future.

7. The SNPN continuity handover method for port activities of claim 4, wherein: The port SNPN determines whether the ship UE moves towards the port SNPN according to real-time position, speed information and driving route of the ship UE, and predicts whether the ship UE will reach the port within a second preset time length, and if yes, determines that the ship UE needs to be handed over to the port SNPN in the future.

8. A SNPN continuity handover system for port activities, characterized by: The port SNPN, the MEC network element arranged in the port, the wireless access network and the ship UE are respectively provided with a memory, a processor and one or more execution instructions stored in the memory, and the execution instructions can make the processor execute the corresponding operations of the SNPN continuity handover method for port activities according to any one of claims 1-7.

Images