CN115348633A

CN115348633A - Method, system, equipment and storage medium for switching main link and standby link of base station gateway

Info

Publication number: CN115348633A
Application number: CN202210989417.XA
Authority: CN
Inventors: 余鑫; 林玮平; 李洁; 孙晓佩; 蔡佳辉
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-15

Abstract

The invention provides a method, a system, equipment and a storage medium for switching a main link and a standby link by a base station gateway, wherein the method comprises the following steps: establishing a main communication link between an enterprise side gateway and a 5G core network; when the enterprise side gateway detects a link state fault of the 5G core network, the enterprise side gateway sends a reset signaling to the wireless access network, and the wireless access network releases at least part of information transmission signaling resources based on the reset signaling; the enterprise side gateway accesses the 5G core network in a broadband mode, and negotiates with the core network side gateway to establish an internet safety channel as a backup link for the 5G small base station to return; and the enterprise side gateway sends an NG link establishment request message to the core network side gateway, and establishes a standby communication link based on the reply of the core network side gateway. The invention can ensure the continuity of the 5G private network service of the enterprise park under the extreme condition of enterprise IP private line failure, and avoid the influence of the scene on enterprise production.

Description

Method, system, equipment and storage medium for switching main link and standby link of base station gateway

Technical Field

The present invention relates to the field of communications, and in particular, to a method, a system, a device, and a storage medium for switching between a master link and a slave link of a base station gateway.

Background

The trend of network IP is the biggest trend in the network development of telecommunication operators in recent years, and under the driving of the trend, the process of mobile network IP is gradually expanded, and as an important component of the mobile network, the IP of the mobile bearer network is a very important content. The traditional base station backhaul network of the mobile operator is built based on TDM/SDH, but with the deployment and development of services such as 5G and LTE, data services have become the bearer subject, and the demand for bandwidth is rapidly increasing. In SDH (Synchronous Digital Hierarchy), a traditional TDM (TDM generally refers to a time-division multiplexing technology) interleaves different signals in different time periods and transmits the signals along the same channel; and extracting and restoring the signals in each time period into the original signals by using a certain method at a receiving end. ) The expansion mode of the network with the exclusive pipeline is difficult to support, and the construction of a packetized bearer network becomes an irreversible trend. Meanwhile, the IP private line access means that the exchanger of the communication client is accessed to the network in a private line mode, so that a series of services such as voice, fax, IP long distance, internet access and the like with high quality and favorable preference are provided for group clients.

In a 5G enterprise private network scenario, IP lines such as IP RAN (IP RAN means "Radio Access network IP". IP means an interconnection protocol, and RAN means Radio Access network. Compared to a conventional SDH transport network, IP RAN is an IP-based transport network) are usually used as backhaul, and the enterprise private network has a high requirement for reliability and usually needs a dual backhaul link mode for guarantee, and if both the main and standby links use IP lines, the investment is high.

In view of this, the present invention provides a method, a system, a device and a storage medium for a base station gateway to switch active/standby links.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the invention and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a method, a system, equipment and a storage medium for switching a main link and a standby link by a base station gateway, overcomes the difficulty in the prior art, can ensure the continuity of the 5G private network service of an enterprise park under the extreme condition of enterprise IP private line failure, and avoids the influence of the scene on enterprise production.

The embodiment of the invention provides a method for switching a main link and a standby link by a base station gateway, which comprises the following steps:

establishing a main communication link between an enterprise side gateway and a 5G core network;

when the enterprise side gateway detects a link state fault of a 5G core network, the enterprise side gateway sends a reset signaling to a wireless access network, and the wireless access network releases at least part of information transmission signaling resources based on the reset signaling;

the enterprise side gateway accesses a 5G core network in a broadband mode, and negotiates with the core network side gateway to establish an internet safety channel as a backup link for the 5G small base station to return;

and the enterprise side gateway sends NG link establishment request information to a core network side gateway, and the enterprise side gateway establishes a standby communication link based on the reply of the core network side gateway.

Preferably, the establishing a main communication link between the enterprise-side gateway and the 5G core network includes:

the wireless access network sends a user equipment initial message to a signaling gateway of the enterprise side gateway;

the enterprise side gateway forwards the initial message of the user equipment to an access and management network element of a core network side gateway through an IP wireless access network as a return main link;

the enterprise side gateway forwards the relevant signaling of the registration process and the session process;

and the base station gateway shunts according to the destination address of the related signaling, sends enterprise service flow to enterprise application, and sends services except the enterprise service flow to a user plane functional network element.

Preferably, if the enterprise-side gateway detects a link state failure of the 5G core network, the enterprise-side gateway sends a reset signaling to the radio access network, and the radio access network releases at least part of information transmission signaling resources based on the reset signaling, including:

the enterprise side gateway detects the link state with the 5G core network through heartbeat information;

when the times of no response of the heartbeat information exceed the preset continuous retransmission times, the enterprise side gateway sends a reset signaling to the wireless access network;

the radio access network releases at least part of information transmission signaling resources based on the reset signaling;

and the gateway at the core network side replies a restart confirmation message.

Preferably, when the number of times that the heartbeat information is not responded exceeds a preset number of continuous retransmissions, the enterprise-side gateway sends a reset signaling to the radio access network, further comprising: the reset signaling comprises reset reason information and reset type information;

the radio access network releases at least part of information transmission signaling resources based on the reset signaling, and further comprises: the radio access network node selects to release all information transfer signalling resources or only information transfer signalling resources associated with terminals connected to the enterprise side gateway based on reset type information.

Preferably, the enterprise-side gateway accesses the 5G core network in a broadband manner, negotiates with the core-network-side gateway to establish an internet security channel as a backup link for backhaul of the 5G small base station, and includes:

the enterprise side gateway is accessed to a 5G core network through a passive optical network;

the enterprise side gateway and the core network side gateway negotiate to establish an internet security channel;

and taking the internet safety channel as a backup link for returning the 5G small base station.

Preferably, the sending, by the enterprise-side gateway, an NG link establishment request message to a core network-side gateway, and the establishing, by the enterprise-side gateway, a backup communication link based on a reply from the core network-side gateway includes:

the enterprise side gateway sends NG link establishment request information to the core network side gateway;

the core network side gateway forwards the response of the access and management network element to the NG link establishment request message to the enterprise side gateway;

and the enterprise-side gateway establishes a standby communication link based on the reply.

Preferably, the method further comprises the following steps:

and the enterprise side gateway receives the initial message of the user equipment and the service requirement information sent by the wireless access network, forwards the initial message and the service requirement information to the core network side gateway, and performs a registration process and a session process through the core network side gateway.

The embodiment of the present invention further provides a system for switching between a master link and a slave link by a base station gateway, which is used for implementing the method for switching between the master link and the slave link by the base station gateway, and the system for switching between the master link and the slave link by the base station gateway includes:

the communication link module is used for establishing a main communication link between the enterprise side gateway and the 5G core network;

the enterprise side gateway detects the link state of the 5G core network through heartbeat information, and when the heartbeat information is not satisfied with preset conditions, the enterprise side gateway sends a reset signaling to the wireless access network, and the wireless access network releases at least part of information transmission signaling resources based on the reset signaling;

the enterprise side gateway accesses a 5G core network in a broadband mode, and negotiates with the core network side gateway to establish an internet safety channel as a backup link for returning the 5G small base station;

and the enterprise side gateway sends NG link establishment request information to the core network side gateway, and establishes the standby communication link based on the reply of the core network side gateway.

An embodiment of the present invention further provides a device for switching a primary link and a standby link by a base station gateway, including:

a processor;

a memory having stored therein executable instructions of the processor;

the processor is configured to execute the steps of the method for switching the active/standby links by the base station gateway by executing the executable instructions.

The embodiment of the present invention further provides a computer-readable storage medium, configured to store a program, where the program, when executed, implements the steps of the method for switching the active/standby links by the base station gateway.

The invention aims to provide a method, a system, equipment and a storage medium for switching main and standby links by a base station gateway, which can ensure the continuity of 5G private network services of an enterprise park under the extreme condition of enterprise IP private line faults and avoid the influence of the scene on enterprise production.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a flowchart of a method for switching between active and standby links by a base station gateway according to the present invention.

Fig. 2 is a schematic flowchart of step S110 in the embodiment of the method for switching the active/standby links by the base station gateway of the present invention.

Fig. 3 is a schematic flowchart of step S120 in the embodiment of the method for switching between the active and standby links by the base station gateway according to the present invention.

Fig. 4 is a flowchart illustrating step S130 in the embodiment of the method for switching between the active and standby links by the base station gateway according to the present invention.

Fig. 5 is a flowchart illustrating step S140 in the embodiment of the method for switching between the active and standby links by the base station gateway of the present invention.

Fig. 6 is a schematic block diagram of a system for switching between active and standby links by a base station gateway according to the present invention.

Fig. 7 is a schematic block diagram of a communication link module in an embodiment of a system for switching between active and standby links by a base station gateway according to the present invention.

Fig. 8 is a schematic block diagram of a reset signaling module in an embodiment of a system for switching between active and standby links by a base station gateway according to the present invention.

Fig. 9 is a schematic block diagram of a backhaul link module in an embodiment of a system for switching between active and standby links by a base station gateway according to the present invention.

Fig. 10 is a schematic block diagram of a standby link module in an embodiment of a base station gateway switching active/standby link system according to the present invention.

Fig. 11 is a schematic application scenario diagram in an embodiment of a system for switching active/standby links by a base station gateway according to the present invention.

Fig. 12 is a schematic application scenario diagram of an embodiment of a system for switching between an active link and a standby link by a base station gateway according to the present invention.

Fig. 13 is a timing diagram of switching of active/standby links of a base station gateway in an embodiment of a system for switching active/standby links of a base station gateway according to the present invention.

Fig. 14 is a schematic diagram of a base station gateway switching active/standby link device according to the present invention.

Detailed Description

The following embodiments of the present application are described by specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings so that those skilled in the art to which the present application pertains can easily carry out the present application. The present application may be embodied in many different forms and is not limited to the embodiments described herein.

In the expressions of the present application, reference to expressions of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics illustrated may be combined in any suitable manner in any one or more embodiments or examples. Moreover, the various embodiments or examples and features of the various embodiments or examples presented herein can be combined and combined by those skilled in the art without being mutually inconsistent.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the expressions of this application, "plurality" means two or more unless explicitly defined otherwise.

In order to clearly explain the present application, components that are not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

Throughout the specification, when a device is referred to as being "connected" to another device, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. In addition, when a device "includes" a certain constituent element, unless otherwise specified, it means that the other constituent element is not excluded, but may be included.

When a device is said to be "on" another device, this may be directly on the other device, but may also be accompanied by other devices in between. When a device is said to be "directly on" another device, there are no other devices in between.

Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface are represented. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "a, B or C" or "a, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" include plural forms as long as the words do not expressly indicate a contrary meaning. The term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and/or components.

Although not defined differently, including technical and scientific terms used herein, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms defined in commonly used dictionaries are to be additionally interpreted as having meanings consistent with those of related art documents and the contents of the present prompts, and must not be excessively interpreted as having ideal or very formulaic meanings unless defined.

Fig. 1 is a flowchart of a method for switching active/standby links by a base station gateway according to the present invention. As shown in fig. 1, the present invention relates to the field of network configuration, and more particularly, to a method for a base station gateway to switch active/standby links, which comprises the following steps:

and S110, establishing a main communication link between the enterprise side gateway and the 5G core network.

And S120, the enterprise side gateway detects the link state with the 5G core network through the heartbeat information, when the heartbeat information is not satisfied with the preset conditions, the enterprise side gateway sends a reset signaling to the wireless access network, and the wireless access network releases at least part of information transmission signaling resources based on the reset signaling.

S130, the enterprise side gateway accesses the 5G core network in a broadband mode, and negotiates with the core network side gateway to establish an internet security channel to serve as a backup link for the 5G small base station to pass back.

S140, the enterprise side gateway sends an NG link establishment request message to the core network side gateway, and the enterprise side gateway establishes a standby communication link based on the reply of the core network side gateway.

Through the steps, when the base station gateway judges that the main return link is interrupted, the broadband access mode such as PON is used as a standby return link, and the standby communication link can ensure that the continuous operation of the local business of the enterprise is not interrupted.

The scheme provided by the patent is deployed at a 5G base station gateway on an enterprise side, double-link backhaul can be supported, a client can adopt an IP (Internet protocol) special line as a main backhaul according to needs, and broadband access modes such as PON (passive optical network) and the like are used as standby backhaul links, so that the requirement of enterprise users on the reliability of the 5G special network is met, and the investment cost of the backhaul links is reduced.

Fig. 2 is a schematic flowchart of step S110 in the embodiment of the method for switching the active/standby links by the base station gateway of the present invention. Fig. 3 is a schematic flowchart of step S120 in the embodiment of the method for switching between the active and standby links by the base station gateway of the present invention. Fig. 4 is a flowchart illustrating step S130 in the embodiment of the method for switching between the active and standby links by the base station gateway of the present invention. Fig. 5 is a flowchart illustrating step S140 in the embodiment of the method for switching between the active and standby links by the base station gateway of the present invention.

As shown in fig. 2 to 5, in the embodiment of fig. 1, on the basis of steps S110, S120, S130, and S140, step S110 is replaced by S111, S112, S113, and S114, step S120 is replaced by S121, S122, S123, and S124, step S130 is replaced by S131, S132, and S133, step S140 is replaced by S141, S142, and S143, and step S150 is added, and the following description is provided for each step:

and S111, the wireless access network sends the initial message of the user equipment to a signaling gateway of the enterprise side gateway. Radio Access Network (RAN) is a part of mobile communication system. It is an implementation of radio access technology. It exists between a device (e.g., a mobile phone, a computer, or any remotely controlled machine) and a Core Network (CN) to provide a communication link between the two. According to different standards, mobile phones and other devices connected wirelessly are named differently, such as "User Equipment" (UE), terminal Equipment (Terminal Equipment), mobile Station (MS), and so on.

And S112, the enterprise side gateway forwards the initial message of the user equipment to an access and management network element of the core network side gateway through the IP wireless access network as a return main link.

And S113, forwarding the relevant signaling of the registration process and the session process by the enterprise-side gateway.

S114, the base station gateway shunts according to the destination address of the related signaling, sends the enterprise service flow to the enterprise application, and sends the services except the enterprise service flow to the user plane functional network element.

And S121, the enterprise side gateway detects the link state with the 5G core network through the heartbeat information.

And S122, when the number of times of no response of the heartbeat information exceeds the preset continuous retransmission number, the enterprise side gateway sends a reset signaling to the wireless access network, wherein the reset signaling comprises reset reason information and reset type information.

S123, the radio access network releases at least part of the information transmission signaling resources based on the reset signaling, for example: the radio access network node selects to release all information transfer signalling resources or only information transfer signalling resources associated with terminals connected to the enterprise side gateway based on the reset type information.

And S124, the gateway at the core network side replies a restart confirmation message.

S131, the enterprise side gateway accesses the 5G core network through the passive optical network.

S132, the enterprise side gateway and the core network side gateway negotiate to establish an Internet security channel.

And S133, taking the Internet secure channel as a backup link for returning the 5G small base station.

And S141, the enterprise side gateway sends an NG link establishment request message to the core network side gateway.

And S142, the core network side gateway forwards the response of the access and management network element to the NG link establishment request message to the enterprise side gateway.

And S143, the enterprise side gateway establishes a standby communication link based on the reply.

S150, the enterprise side gateway receives the initial message of the user equipment and the service requirement information sent by the wireless access network, forwards the initial message and the service requirement information to the core network side gateway, and performs a registration process and a session process through the core network side gateway.

The method for switching the main link and the standby link of the base station gateway can ensure the continuity of the 5G private network service of the enterprise park under the extreme condition of enterprise IP private line failure, and avoids the influence of the scene on enterprise production.

Fig. 6 is a schematic block diagram of a system for switching active/standby links by a base station gateway according to the present invention. As shown in fig. 6, the system for switching active/standby links by a base station gateway of the present invention includes, but is not limited to:

and the communication link module 51 establishes a main communication link between the enterprise side gateway and the 5G core network.

And a reset signaling module 52, where the enterprise-side gateway detects a link state with the 5G core network through the heartbeat information, and when the heartbeat information is not satisfied with a preset condition, the enterprise-side gateway sends a reset signaling to the radio access network, and the radio access network releases at least part of information transmission signaling resources based on the reset signaling.

And in the return link module 53, the enterprise-side gateway accesses the 5G core network in a broadband manner, and negotiates with the core-network-side gateway to establish an internet security channel as a backup link for returning the 5G small base station.

And the standby link module 54 is used for sending an NG link establishment request message to the core network side gateway by the enterprise side gateway, and establishing a standby communication link by the enterprise side gateway based on the reply of the core network side gateway.

The implementation principle of the above modules is described in the method for switching the active/standby links by the base station gateway, and is not described herein again.

The base station gateway switching master-slave link system can ensure the continuity of the 5G private network service of the enterprise park under the extreme condition of enterprise IP private line failure, and avoid the influence of the scene on enterprise production.

Fig. 7 is a schematic block diagram of a communication link module in an embodiment of a system for switching between a master link and a slave link by a base station gateway according to the present invention. Fig. 8 is a schematic block diagram of a reset signaling module in an embodiment of a system for switching between active and standby links by a base station gateway according to the present invention. Fig. 9 is a schematic block diagram of a backhaul link module in an embodiment of a system for switching between active and standby links by a base station gateway according to the present invention. Fig. 10 is a schematic block diagram of a standby link module in an embodiment of a base station gateway switching active/standby link system according to the present invention. Fig. 7 to 10 show that, on the basis of the embodiment of the apparatus in fig. 6, the base station gateway switching active/standby link system of the present invention replaces the communication link module 51 with an initial message module 511, a message forwarding module 512, a registration session module 513, and a signaling splitting module 514. The reset signaling module 52 is replaced by a state detection module 521, a reset signaling module 522, a resource release module 523, and a restart confirmation module 524. The backhaul link module 53 is replaced by a network access module 531, a secure tunnel module 532, and a backup link module 533. The standby link module 54 is replaced by an NG link establishment request module 541, a reply forwarding module 542 and a communication link module 543. A registration session module 55 is added.

The following is described for each module:

the initial message module 511 sends the user equipment initial message to the signaling gateway of the enterprise gateway through the radio access network.

And the message forwarding module 512 is used for forwarding the initial message of the user equipment to the access and management network element of the gateway at the core network side through the IP-based wireless access network as a return main link.

And a registration session module 513, which forwards signaling related to the registration procedure and the session procedure by the enterprise-side gateway.

And a signaling shunting module 514, in which the base station gateway shunts according to the destination address of the relevant signaling, sends the enterprise service flow to the enterprise application, and sends the services except the enterprise service flow to the user plane function network element.

And the state detection module 521 detects the link state with the 5G core network through the heartbeat information by the enterprise-side gateway.

The reset signaling module 522 is configured to send a reset signaling to the radio access network when the number of times that the heartbeat information is not responded exceeds the preset number of consecutive retransmissions, where the reset signaling includes reset reason information and reset type information.

The resource releasing module 523, the radio access network releases at least part of the information transmission signaling resources based on the reset signaling, for example: the radio access network node selects to release all information transfer signalling resources or only information transfer signalling resources associated with terminals connected to the enterprise side gateway based on the reset type information.

And a restart confirmation module 524, where the core network side gateway replies to the restart confirmation message.

And the network access module 531 accesses the enterprise-side gateway to the 5G core network through the passive optical network.

The secure channel module 532, the enterprise side gateway and the core network side gateway negotiate to establish an internet secure channel.

The backup link module 533 uses the internet security channel as a backup link for the backhaul of the 5G small cell.

NG link establishment request module 541, the enterprise side gateway sends an NG link establishment request message to the core network side gateway.

And a reply forwarding module 542, which forwards the reply of the NG link establishment request message from the access and management network element to the enterprise-side gateway.

The communication link module 543, the enterprise-side gateway establishes a backup communication link based on the reply.

And the registration session module 55, the enterprise side gateway receives the user equipment initial message and the service requirement information sent by the radio access network, forwards the user equipment initial message and the service requirement information to the core network side gateway, and performs a registration process and a session process through the core network side gateway.

The application scenarios of the invention include:

1. and at the enterprise network side, the signaling gateway and the data gateway cooperate with the enterprise AppServer and the small base station of the 5G private network to construct a 5G private network system.

The 2.5G enterprise private network is a 5G key application scene, meanwhile, enterprise customers have very high requirements on the reliability of the private network, and operators also hope to provide private network services by using 5G large network resources, so that the patent has very strong practicability on the 5G enterprise private network.

The invention realizes the disaster recovery of the 5G enterprise private network dual backhaul link through the 5G base station gateway. The base station gateway is directly connected through an enterprise IP private line to serve as a return main link, and meanwhile, a PON and other broadband access modes serve as standby return links. For the 5G network elements of the enterprise private network, the same set of base station gateway is butted, so that the 5G private network service is hardly influenced, and the method is also a place needing protection. The IPSec protocol is adopted between the base station gateway deployed at the enterprise side and the large network base station gateway to encrypt and protect the integrity of transmission data, so that the service safety of the 5G small base station in a non-trust domain return mode can be guaranteed.

The implementation principle of the above steps is described in the method for switching the active/standby links by the base station gateway, and is not described herein again.

Fig. 11 is a schematic application scenario diagram in an embodiment of a system for switching active/standby links by a base station gateway according to the present invention. Fig. 12 is a schematic application scenario diagram in an embodiment of a system for switching active/standby links by a base station gateway according to the present invention. Fig. 13 is a timing diagram of switching between main and standby links of a base station gateway in an embodiment of a system for switching between main and standby links of a base station gateway according to the present invention. Fig. 11, 12, and 13 are schematic diagrams of implementation processes of the method for switching the active/standby links by the base station gateway according to the present invention. The specific implementation process of the method for switching between the active and standby links by the base station gateway of the present invention is shown in fig. 11, 12 and 13 (only the relevant parts related to the present invention are described), and the process description is as follows:

referring to fig. 11, a 5G base station gateway 3 and a 5G base station gateway 3 deployed on the enterprise side are respectively connected to a 5G core network 1 and a large network base station gateway (core network side gateway 2), the 5G base station gateway 3 directly performs data interaction with an enterprise application 4, and the 5G base station gateway 3 performs data interaction with each terminal 6 inside the enterprise through a 5G small base station 5. The 5G base station gateway 3 can ensure the service safety of the 5G small base station 5 in a non-trust domain return mode, and adopts an IPSec protocol to encrypt and protect the integrity of transmission data. Under the extreme condition of dealing with the link failure from the enterprise 5G private network to the large network 5GC, the standby link can be switched to, and the coverage of the 5G private network in the enterprise network is still normal. The problem of normal operation of an enterprise production system when a large network link fails is solved. The patent provides a method for automatically switching main and standby links by a 5G base station gateway 3, and mainly relates to the technical field of 5G. The enterprise private network is directly connected as a return main link through an enterprise IP private line, and meanwhile, a PON and other broadband access modes are used as standby return links. The base station gateway deployed at the enterprise side guarantees the service safety of a backhaul mode from the untrusted domain. Meanwhile, after the main link fails, the 5G base station gateway 3 can be rapidly switched to a standby communication link, and the 5G network element in the private network cannot basically sense the occurrence of the failure, so that the normal and continuous operation of the 5G service in the enterprise park is ensured.

Referring to fig. 12, a schematic view of an application scenario of the present patent shows a 5G base station gateway 3, which includes three parts, namely a signaling gateway 31, a data gateway 32, and a security gateway 33, where the signaling gateway 31 is used as a convergence device of a control plane, and can implement termination processing or routing forwarding of base station related signaling. Data gateway 32 enables user plane routing and forwarding. The security gateway 33 is used as a security guarantee between the small base station and the core network, and realizes secure transmission of data and signaling between the small base station and the core network by establishing a secure tunnel. Private network signaling gateway 31 in this patent builds little base station through the N2 interface and links as N2 main link with 5G core network AMF, and data gateway 32 links as N3 main link with little base station and core network's UPF through the N3 interface. The private network security gateway 33 establishes an IPSec security tunnel with a large network base station gateway (core network side gateway 2), and establishes N2 and N3 backup communication links with the large network base station gateway, respectively. The data gateway 32 is connected with the enterprise local service server to realize the IP distribution according to the target. Under normal conditions, the private network 5G base station gateway 3 converges the signaling of the enterprise campus 5G small base station 5 and forwards the user plane to the operator large network 5GC through the main link. When the 5G private network base station gateway monitors that the link with the large network 5GC is interrupted, the standby communication link can be automatically switched, so that the 5G private network service in the enterprise park is not influenced under extreme conditions.

As shown in fig. 13, the timing sequence process of switching the active/standby links of the base station gateway in the embodiment of the system for switching the active/standby links of the base station gateway of the present invention is as follows:

step 1, the RAN sends an Initial UE message (UE Initial message) (including a registration request) to the signaling gateway 31.

And 2, under a normal condition, the 5G base station gateway 3 forwards the Initial UE message to the large network AMF by using the IPRAN as a return main link. The 5G core network mainly comprises network elements such as AMF, SMF and UPF, the UPF is generally placed at a demand side at present, and in city or county, the AMF and the SMF are generally concentrated in provincial companies. Which comprises the following steps: the AMF network element, access and Mobility Management Function, executes registration, connection, accessibility and Mobility Management. A session management message transmission channel is provided for the UE and the SMF, authentication and authorization functions are provided for the user during access, and the terminal 6 and a wireless core network control plane access point are provided. Similar to mobility management in 4G MMEs. AMF allocates 5G-GUTI, and AMF selects SMF. UPF network element, the User plane function, packet routing forwarding, policy implementation, flow report and Qos processing. Similar to sgw and pgw user plane functions in 4G. The UPF is an anchor point of the session and records the traffic forwarding amount.

And step 3, the base station gateway forwards the following signaling related to the registration flow and the session flow, and the related registration flow and the session flow can adopt the prior art, which is not the key point of the invention and is not described herein again.

And 4, the base station gateway shunts according to the destination address, the enterprise service flow is directly transferred to the enterprise application 4, and other services are forwarded to the UPF.

And step 5, the base station gateway monitors the link state with the large network 5GC through SCTP heartbeat messages (Heart beat), and when the times of no response of the heartbeat messages exceed the set continuous retransmission times, the main link from the gateway to the large network 5GC is considered to be in fault, so that the switching of the standby link is realized. Stream Control Transmission Protocol (SCTP) is a Protocol for transmitting a plurality of data streams simultaneously between two ends of a network connection. SCTP provides services similar to UDP and TCP.

And step 6, the base station gateway initiates NGReset signaling (Reset signaling) to the base station side to realize resource synchronization of the two parties, the parameters mainly comprise NG Reset Cause information, resetType information and the like, the Reset reason and the Reset range are synchronized to the base station, and the RAN node selects to release the whole NGAP signaling resource according to the ResetType or only releases the NGAP signaling resource associated with the specified terminal 6. Next Generation Application Protocol (Next Generation Application Protocol), application layer Protocol TS 38.413 between 5G-AN and AMF. The NGAP service. The NGAP provides a signaling service between a NG-RAN (NG Radio Access Network-NG Radio Access Network/5G Radio Access Network) node and an AMF node. Services are divided into two categories: non-UE related services: an NG interface instance is established between the NG-RAN and the AMF. UE related services: signaling and data connections are provided for the UE to access the core network.

And 7, the base station 5G replies to an NGResetAcknowledgege message (restart confirmation).

And 8-10, accessing the private network 5G base station gateway 3 in a broadband mode such as PON (passive optical network) and the like, negotiating with the 5G base station gateway 3 arranged on the core network side to establish an IPSec (Internet protocol security) safety channel, wherein the IPSec tunnel is used as a return backup link carried out by the 5G small base station 5.

And 11-14, the private network base station gateway sends an NGSetupRequest message (NG link establishment request message) to the large network gateway, and the large network gateway forwards the message to a 5GC AMF network element. After receiving the ngsetuppesponse message (reply to the NG link establishment request message) replied by the AMF, the message is forwarded to the private network base station gateway. And at the moment, the private network base station gateway successfully establishes the standby NG link.

Step 15-17 private network base station gateway forwards the relevant signaling to the large network gateway, and the large network gateway performs the registration process and the session process, and the relevant registration process and the session process can adopt the prior art, which is not the key point of the present invention and is not described here again.

This patent application is in private network 5G base station gateway 3 to this patent need not use one set of reserve base station gateway service in the system, and to enterprise private network 5G network element, what the butt joint is same set of base station gateway, consequently has not had the influence to 5G private network business hardly, and this is the technical advantage of this patent too. For the private network 5G base station, the switching of the upper link of the base station gateway cannot be sensed, and the main link and the standby link of the base station gateway are physical links, so that the stability is higher.

Compared with the prior art, the main advantages are that:

1. the implementation mode of the base station gateway is innovatively provided, the large-network enterprise network cooperation is realized, the use of large-network 5GC resources and service characteristics under normal conditions can be guaranteed, and the safety and reliability requirements of enterprise 5G private networks can be guaranteed.

2. The continuity of the 5G private network service of the enterprise park can be ensured under the extreme condition of enterprise IP private line faults, and the influence of the scene on enterprise production is avoided.

3. The patent provides a method for automatically switching main and standby links based on a 5G base station gateway and is applied to a 5G communication network system. The 5G base station gateway 3 of the invention adopts new network elements such as a signaling gateway, a data gateway, a security gateway and the like and is added into a 5G network system architecture.

The 5G base station gateway in the patent ensures normal and continuous operation of 5G services in an enterprise park by automatically switching the main link and the standby link. Wherein, the base station gateway is directly connected with the operator 5GC as a main link through IP private lines such as enterprise IPRAN and the like; meanwhile, the 5G base station gateway safely accesses the 5G base station gateway deployed on the large network side through a PON and other broadband access modes and through the IPsec function of the base station gateway to serve as a standby communication link. After the main link fails, the private network 5G base station gateway can be rapidly switched to a standby communication link to establish an NG link with the large network side base station gateway. For 5G network elements in the private network, the occurrence of the fault is basically not perceived.

The invention can improve the user satisfaction degree, reduce the corresponding operation cost of enterprises, and enable operators to provide new services and applications more quickly, efficiently, stably and at low cost, thereby meeting various special requirements of common customers and vertical industries.

The embodiment of the invention also provides a device for switching the main link and the standby link by the base station gateway, which comprises a processor. A memory having stored therein executable instructions of the processor. Wherein the processor is configured to switch the steps of the active/standby link method via the base station gateway executing the executable instructions.

As shown above, the base station gateway switching active/standby link system according to the embodiment of the present invention can ensure continuity of the 5G private network service in the enterprise campus under the extreme condition of an enterprise IP private line failure, and avoid the influence of the scenario on enterprise production.

As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Thus, various aspects of the invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" platform.

Fig. 14 is a schematic diagram of a base station gateway switching active/standby link device according to the present invention. An electronic device 600 according to this embodiment of the invention is described below with reference to fig. 14. The electronic device 600 shown in fig. 14 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.

As shown in fig. 14, the electronic device 600 is in the form of a general purpose computing device. The components of the electronic device 600 may include, but are not limited to: at least one processing unit 610, at least one memory unit 620, a bus 630 connecting the different platform components (including the memory unit 620 and the processing unit 610), a display unit 640, etc.

Wherein the storage unit stores program code executable by the processing unit 610 to cause the processing unit 610 to perform steps according to various exemplary embodiments of the present invention described in the above-mentioned electronic prescription flow processing method section of the present specification. For example, processing unit 610 may perform the steps as shown in fig. 1.

The storage unit 620 may include readable media in the form of volatile storage units, such as a random access memory unit (RAM) 6201 and/or a cache storage unit 6202, and may further include a read-only memory unit (ROM) 6203.

The memory unit 620 may also include a program/utility 6204 having a set (at least one) of program modules 6205, such program modules 6205 including, but not limited to: a processing system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

Bus 630 may be one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

The electronic device 600 may also communicate with one or more external devices 700 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 600, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 600 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 650. Also, the electronic device 600 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via the network adapter 660. The network adapter 660 may communicate with other modules of the electronic device 600 via the bus 630. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 600, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms, to name a few.

The embodiment of the invention also provides a computer readable storage medium for storing a program, and the step of the method for switching the main link and the standby link by the base station gateway is realized when the program is executed. In some possible embodiments, the aspects of the present invention may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the present invention described in the above-mentioned electronic prescription flow processing method section of this specification, when the program product is run on the terminal device.

The program product 800 for implementing the above method according to an embodiment of the present invention may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out processes of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In situations involving remote computing devices, the remote computing devices may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to external computing devices (e.g., through the internet using an internet service provider).

In summary, the present invention is directed to a method, a system, a device, and a storage medium for a base station gateway to switch active/standby links, which can ensure continuity of 5G private network services in an enterprise campus under an extreme condition of enterprise IP private line failure, and avoid an impact of the scenario on enterprise production.

The foregoing is a further detailed description of the invention in connection with specific preferred embodiments and it is not intended to limit the invention to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A method for switching a main link and a standby link of a base station gateway is characterized by comprising the following steps:

the enterprise side gateway accesses a 5G core network in a broadband mode, and negotiates with the core network side gateway to establish an internet security channel as a backup link for the 5G small base station to pass back;

and the enterprise side gateway sends NG link establishment request information to a core network side gateway, and establishes a standby communication link based on the reply of the core network side gateway.

2. The method for switching active/standby links by a base station gateway according to claim 1, wherein the establishing of the primary communication link between the enterprise-side gateway and the 5G core network comprises:

the enterprise side gateway forwards the related signaling of the registration process and the session process;

3. The method for switching between active and standby links by a base station gateway according to claim 1, wherein when the enterprise-side gateway detects a link state failure of a 5G core network, the enterprise-side gateway sends a reset signaling to the radio access network, and the radio access network releases at least part of signaling resources for information transmission based on the reset signaling, including:

the radio access network releases at least part of the information transmission signaling resources based on the reset signaling;

4. The method for switching active/standby links by a base station gateway according to claim 3, wherein when the number of times that the heartbeat information is not responded exceeds a preset number of consecutive retransmissions, the enterprise-side gateway sends a reset signaling to the radio access network, further comprising: the reset signaling comprises reset reason information and reset type information;

5. The method for switching active/standby links by a base station gateway according to claim 1, wherein the enterprise-side gateway accesses a 5G core network in a broadband manner, negotiates with the core network-side gateway to establish an internet security channel as a backup link for the 5G small cell to pass back, and includes:

6. The method for switching between active and standby links by a base station gateway according to claim 1, wherein the enterprise-side gateway sends an NG link establishment request message to a core network-side gateway, and the enterprise-side gateway establishes a standby communication link based on a reply from the core network-side gateway, including:

7. The method for switching active/standby links by a base station gateway according to claim 1, further comprising:

8. A system for switching main and standby links of a base station gateway is characterized by comprising

9. A base station gateway switching master/standby link equipment is characterized by comprising:

a processor;

a memory having stored therein executable instructions of the processor;

wherein the processor is configured to execute the steps of the method for switching the active/standby link of the base station gateway according to any one of claims 1 to 7 by executing the executable instructions.

10. A computer readable storage medium for storing a program, wherein the program when executed by a processor implements the steps of the method for a base station gateway to switch between a primary and a secondary link according to any one of claims 1 to 7.