CN114599053B - Networking and networking protection method - Google Patents
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Abstract
The embodiment of the application provides a networking and networking protection method, wherein the networking comprises the following steps: the eNB is in communication connection with the first plane of the PTN in the city and is used for sending 4G service information to the first plane of the PTN in the city; the gNB is in communication connection with the SPN plane of the city and is used for sending 5G service information to the SPN plane of the city; the local city PTN plane is in communication connection with the trunk-saving PTN plane in a local IP connection mode and is used for sending 4G service information to the trunk-saving PTN plane; the SPN two planes of the city are in communication connection with the PTN one plane of the city in a local IP connection mode, and are used for forwarding 5G service information to the dry-saving PTN plane through the PTN one plane of the city, so that the dry-saving PTN plane is used for sending the 5G service information to a core network; the trunking-free PTN plane is connected to the core network. According to the embodiment of the application, the SPN two planes in the city can be communicated with the PTN one plane in the city, so that the traffic of the XN interface is prevented from bypassing the PTN plane or bypassing the core network, and the low-delay requirement of NSA service is further ensured.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a networking and networking protection method.
Background
With the development of the 5th generation mobile communication technology (the 5th generation mobile communication technology,5G), 5G network communication is also widely used in various fields.
Currently, since the packet core network (Evolved Packet Core, EPC) software carrying the 4th generation mobile communication (the 4th generation mobile communication technology,4G) long term evolution technology (Long Term Evolution, LTE) needs to be updated, the software becomes epc+ supporting the 5G service, so as to carry the core network device of the 5G Non independent Networking (NSA) service. However, since the ecp+ side after upgrading has no redundant port to be fully connected with the slice packet network (Slicing Packet Network, SPN), the 4G base station is used as an anchor base station of the 5G base station, and needs to be connected through an XN interface, so that the current networking architecture needs to bypass the traffic of the XN interface. However, the flow bypass manner of the XN interface in the related art cannot guarantee the low latency requirement of NSA service.
Disclosure of Invention
The embodiment of the application provides a networking and networking protection method, which can solve the problem that the flow bypass mode of an XN interface in the related technology cannot ensure the low time delay requirement of NSA service.
In a first aspect, an embodiment of the present application provides a networking, including: eNB, gNB, local market packet transport network (Packet Transport Network, PTN), local market slice packet network SPN, dry-saving packet transport network PTN, core network;
the eNB is in communication connection with the first plane of the PTN in the city and is used for sending 4G service information to the first plane of the PTN in the city;
the gNB is in communication connection with the SPN plane of the city and is used for sending 5G service information to the SPN plane of the city;
the local city PTN plane is in communication connection with the trunk-saving PTN plane in a local IP connection mode and is used for sending 4G service information to the trunk-saving PTN plane;
the SPN two planes of the city are in communication connection with the PTN one plane of the city in a local IP connection mode, and are used for forwarding 5G service information to the dry-saving PTN plane through the PTN one plane of the city, so that the dry-saving PTN plane is used for sending the 5G service information to a core network;
the trunk-saving PTN plane is connected with the core network and is used for sending 4G service information and/or 5G service information to the core network.
In one possible implementation, the city PTN-plane includes PTN L2 nodes, PTNL2/L3 nodes, PTN L3 nodes;
the PTN L2 node is positioned at an access layer of a plane of PTN in the city;
the PTN L2/L3 node is positioned at a convergence layer of a plane of the PTN in the city and used for terminating the L2 service information in the convergence layer;
the PTN L2 node is in communication connection with the PTN L2/L3 node and is used for sending 4G service information to the PTN L2/L3 node;
the PTN L2/L3 node is in communication connection with the PTN 3 node and is used for sending 4G service information to the PTN 3 node.
In one possible implementation, a local PTN-plane is communicatively connected to a trunk-free PTN plane by way of a local IP connection, comprising:
the PTN plane of the city is in communication connection with the dry-saving PTN plane through the PTN L3 node in a local IP connection mode.
In one possible implementation, the PTN L2/L3 nodes include a first PTN L2/L3 node and a second PTN L2/L3 node; the PTN L3 node comprises a PTN 3 node and a second PTN 3 node;
the first PTN L2/L3 node, the second PTN L2/L3 node, the PTN 3 node and the second PTNL3 node form a plane of the ground PTN in the shape of a mouth.
In one possible implementation, the municipality SPN plane includes a municipality SPN biplane L2 node, a SPN L2/L3 node, a SPN L3 node;
the SPN L2 node is positioned at an access layer of the SPN plane of the city;
the SPN L2/L3 node is positioned at a convergence layer of the SPN two planes of the city and is used for terminating the L2 service information in the convergence layer;
the SPN L2 node is in communication connection with the SPN L2/L3 node and is used for sending 5G service information to the SPN L2/L3 node;
the SPN L2/L3 node is in communication connection with the SPN L3 node and is used for sending 5G service information to the SPN L3 node.
In one possible implementation, the municipality SPN two plane is communicatively connected to the municipality PTN one plane by way of a local IP connection, comprising:
the SPN two planes in the city are in communication connection with the PTN one plane in the city through the SPN L3 node in a local IP connection mode.
In one possible implementation, the SPN L2/L3 nodes include a first SPN L2/L3 node and a second SPN L2/L3 node; the SPN L3 node comprises a first SPN L3 node and a second SPN L3 node;
the first SPN L2/L3 node, the second SPN L2/L3 node, the first SPN L3 node and the second SPN L3 node form a ground SPN two plane in a mouth shape.
In one possible implementation manner, the trunk-saving PTN plane includes a trunk-saving convergence L3 node and a trunk-saving landing L3 node;
the utility PTN one plane is in communication connection with the provincial dry PTN plane, and comprises:
the trunk-saving PTN plane is connected with a plane of PTN in the city through a trunk-saving convergence L3 node;
the dry-saving PTN plane is connected with a core network and comprises:
the trunk-saving PTN plane is connected with the core network through the trunk-saving floor L3 node.
In one possible implementation manner, the trunk-saving convergence L3 node includes a first trunk-saving convergence L3 node and a second trunk-saving convergence L3 node; the provincial trunk landing L3 nodes comprise a first provincial trunk landing L3 node and a second provincial trunk landing L3 node;
the first dry-saving convergence L3 node, the second dry-saving convergence L3 node, the first dry-saving landing L3 node and the second dry-saving landing L3 node form a dry-saving PTN plane in a mouth shape.
In a second aspect, an embodiment of the present application provides a method for protecting a network, where the method is applied to the network in the first aspect, tunnel link groups are configured between any two nodes in the network, and each tunnel link group includes a plurality of tunnel links; each node in the networking is borne on an Optical Transport Network (OTN) device; the method comprises at least one of the following:
under the condition that the detected optical power change value is larger than a preset threshold value, switching the current tunnel link;
under the condition that at least one of link error code in the tunnel link is detected to be larger than a preset link error code threshold value, single wave error code is detected to be larger than a preset single wave error code threshold value, and frame loss LOF and B1 error code out-of-limit alarm occur, the current tunnel link is switched;
the current tunnel link is switched upon detection of at least one of: a user side port fault of the OTN equipment, a user side tail fiber fault of the OTN equipment, a user side single board fault of the OTN equipment, a ground PTN-plane side port fault and a ground PTN-plane side single board fault.
In an embodiment of the present application, networking includes: eNB, gNB, packet transport network PTN of city, slice packet network SPN of city, dry packet transport network PTN of province, core network; the eNB is in communication connection with the first plane of the PTN in the city and is used for sending 4G service information to the first plane of the PTN in the city; the gNB is in communication connection with the SPN plane of the city and is used for sending 5G service information to the SPN plane of the city; the local city PTN plane is in communication connection with the trunk-saving PTN plane in a local IP connection mode and is used for sending 4G service information to the trunk-saving PTN plane; the SPN two planes of the city are in communication connection with the PTN one plane of the city in a local IP connection mode, and are used for forwarding 5G service information to the dry-saving PTN plane through the PTN one plane of the city, so that the dry-saving PTN plane is used for sending the 5G service information to a core network; the trunk-saving PTN plane is connected with the core network and is used for sending 4G service information and/or 5G service information to the core network, so that according to the embodiment of the application, the SPN two planes in the city can be communicated with the PTN plane in the city, the traffic of the XN interface is prevented from bypassing the trunk-saving PTN plane or bypassing the core network, and the low-delay requirement of NSA service is further ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an LTE backhaul network provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a networking according to an embodiment of the present disclosure;
FIG. 3 is a second schematic diagram of a networking architecture according to an embodiment of the present disclosure;
FIG. 4 is a third schematic diagram of a networking architecture according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a networking architecture according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a networking structure according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
Currently, the LTE backhaul network is constructed based on PTN, as shown in fig. 1, the LTE backhaul network includes a networking structure and a traffic model of a time-sharing long term evolution (Time Division Long Term Evolution, TD-LTE) transport network, and an evolved node b (eNodeB, eNB) service enters a metropolitan PTN network through an access base station side PTN, passes through L2/L3 aggregation core nodes (ground city L2/L3-1 and ground city L2/L3-2) to a metropolitan L3 core node (ground city L3-1 and ground city L3-2), and then passes through a trunking aggregation node (trunking aggregation L3-1 and trunking convergence L3-2) in a trunking PTN plane to be transported to a mobility management node function (Mobility Management Entity, MME) and a Serving Gateway (SGW) of the core network through trunking landing nodes (trunking L3-1 and trunking L3-2).
In the related art, the 5G NSA uses a 4G core network (EPC), and uses 4G as an anchor point of a control plane, and adopts a mode of dual connection between LTE and a new air interface (5G New Radio,5G NR) of 5G, the EPC is upgraded into epc+ supporting 5G services, but now, because of the port bottleneck, the core network epc+ cannot be fully connected with core ground equipment of a slice packet network (Slicing Packet Network, SPN), as shown in fig. 2, no redundant port is fully connected with the SPN on the epc+ side of the core network, so that the SPN cannot communicate with the epc+.
The 5G NSA needs to be turned on using the eNB as an anchor point, and the eNB as an anchor point of the gNB, the XN traffic between the eNB and the gNB needs to bypass. In the related art, the bypass of the XN traffic from the EPC can be adopted, but the manner of the bypass of the XN traffic in the related art does not meet the low latency requirement of NSA service, which causes the increase of the traffic of the core network, and the traffic route is configured to bypass back and forth, which is easy to cause a loop. XN flow can also bypass from the dry-saving PTN plane, but the bypass distance of the bypass mode is longer, so that the low-delay requirement of NSA service is not met, the flow of the dry-saving PTN plane is increased, and the service quality of 4G-LTE is affected.
In order to solve the problems in the related art, the embodiment of the application provides a networking and a networking protection method.
The networking provided by the embodiments of the present application is first described below.
Fig. 3 is a schematic structural diagram of a networking 300 according to an embodiment of the present application. As shown in fig. 3, the networking 300 may include: eNB 301, gNB 302, municipality PTN-plane 303, municipality SPN-plane 304, province trunk PTN-plane 305, and core network 306.
The eNB 301, the gNB 302, the PTN-plane 303, the SPN-plane 304, the trunk PTN-plane 305, and the core network 306 may be considered as one node in the networking, and Tunnel link groups (Tunnel 1:1) are configured between each node, and each Tunnel link group includes multiple Tunnel links. And each node in the network is carried on an optical transport network (OpticalTransport Network ).
The eNB 301 is communicatively connected to a ground PTN plane 303; gNB 302 is communicatively coupled to ground SPN plane 304; the city PTN-plane 303 is communicatively connected to the provincial PTN plane 305 in a local IP (Native IP) connection; the municipality SPN plane 304 is communicatively connected with the municipality PTN plane 303 in a local IP connection; the trunking-free PTN plane 305 is connected to a core network 306.
The local IP (Native IP) refers to a manner in which user network side interfaces (User Networks interface, UNI) of two devices are directly connected using IP addresses, which corresponds to exposing the IP addresses on the interfaces.
Based on the above networking structure, the 4G service information is sent to the core network 306 by the following manner: an eNB 301 configured to send 4G service information to a PTN one plane 303 of the ground city; the city PTN one plane 303 is configured to send the 4G service information to the trunk-saving PTN plane 305, and the trunk-saving PTN plane 305 forwards the 4G service information to the core network 306.
The 5G service information is sent to the core network 306 by: gNB 302 for sending 5G service information to ground SPN plane 304; the SPN two-plane 304 in the city is configured to forward the 5G service information to the trunking PTN plane 305 through the PTN one-plane 303 in the city, and the trunking PTN plane 305 is configured to send the 5G service information to the core network 306.
Based on the networking, the SPN plane in the city can be accessed into the dry-saving PTN plane through the PTN plane in the city, service information is forwarded to the dry-saving PTN plane through the PTN plane in the city, the traffic of the XN interface is prevented from bypassing the dry-saving PTN plane or bypassing the core network, and then the low-delay requirement of NSA service is ensured.
In some embodiments of the present application, the networking structure may be protected by, for example, switching the current tunnel link when detecting that the optical power variation value is greater than a preset threshold value. For another example, the current tunnel link is switched when at least one of a link error in the tunnel link is detected to be greater than a preset link error threshold, a single wave error is detected to be greater than a preset single wave error threshold, and a frame loss LOF, B1 error out-of-limit alarm occurs.
The current tunnel link is switched upon detection of at least one of: a user side port fault of the OTN equipment, a user side tail fiber fault of the OTN equipment, a user side single board fault of the OTN equipment, a ground PTN-plane side port fault and a ground PTN-plane side single board fault.
The node PTN-plane 303, the SPN-plane 304, and the trunk-saving PTN plane 305 in the networking 300 provided in the embodiment of the present application are described in detail below.
First, a plane 303 of the municipality PTN in the network 300 is introduced.
In some embodiments of the present application, as shown in FIG. 4, the municipality PTN-plane includes PTN L2 node 401, PTN L2/L3 node 402, PTN L3 node 403.
PTN L2 node 401 is located at an access layer of a PTN plane of the municipality, wherein eNB 301 may access the PTN plane of the municipality through PTN L2 node 401.
The PTN L2/L3 node 402 is located at a convergence layer of a plane of the PTN in the city and is configured to terminate L2 traffic information upstream in the convergence layer.
PTN L2 node 401 is communicatively coupled to PTN L2/L3 node 402 for transmitting 4G traffic information to PTN L2/L3 node 402.
The PTN L2/L3 node 402 is communicatively coupled to the PTN 3 node 403 for transmitting 4G traffic information to the PTN 3 node 403. Wherein, the local PTN plane can be in communication connection with the dry PTN plane in a local IP (native IP) mode. PTN L3 node 403 may be an L3 virtual private network VPN, with PTN L3 node 403 and PTN L2/L3 node 402 making up an L3 VPN network.
Specifically, as shown in FIG. 5, the PTN L2/L3 nodes include a first PTN L2/L3 node (PTNL 2/L3-1) and a second PTN L2/L3 node (PTN 2/L3-2); the PTN L3 nodes include a PTNL3 node (PTN 3-1) and a second PTN 3 node (PTN 3-2).
The first PTN L2/L3 node (PTN 2/L3-1), the second PTN 2/L3 node (PTNL 2/L3-2), the PTN 3 node (PTN 3-1) and the second PTN 3 node (PTN 3-2) form a square-shaped ground PTN 3 layer, so that the L3 VPN network is realized.
Then, the ground city SPN biplane is introduced.
In some embodiments of the present application, as shown in FIG. 4, the municipality SPN plane includes municipality SPN plane L2 node 404, SPN L2/L3 node 405, SPN L3 node 406.
SPN L2 node 404 is located at an access layer of the ground SPN plane; wherein, gNB accesses to the SPN two plane of the city through SPNL2 node 404.
The SPN L2/L3 node 405 is located at a convergence layer of the SPN plane of the city and is used for terminating the L2 service information in the convergence layer; the SPN L2 node 404 is communicatively coupled to the SPN L2/L3 node for sending 5G traffic information to the SPN L2/L3 node 405. SPN L2/L3 node 405 is communicatively coupled to SPN L3 node 406 for sending 5G traffic information to SPN L3 node 406. Wherein, the SPN two planes in the city are in communication connection with the PTN one plane in the city through the SPN L3 node 406 in a local IP connection manner. The SPN L3 node is an L3 virtual private network VPN, and SPN L2/L3 node 405 and SPN L3 node 406 form an L3 VPN network.
Specifically, as shown in FIG. 5, the SPN L2/L3 nodes include a first SPN L2/L3 node (SPNL 2/L3-1) and a second SPN L2/L3 node (SPN L2/L3-2); the SPN L3 nodes include a first SPN L3 node (SPN L3-1) and a second SPN L3 node (SPN L3-1).
The first SPN L2/L3 node (SPN 2/L3-1), the second SPN L2/L3 node (SPNL 2/L3-2), the first SPN L3 node (SPN 3-1) and the second SPN L3 node (SPN 3-1) form a mouth-shaped SPN 3 layer in the city, so as to form an L3 VPN network.
Next, the dry PTN plane is described.
In some embodiments of the present application, as shown in fig. 4, the trunking PTN plane includes a trunking aggregation L3 node 407 and a trunking landing L3 node 408. The power saving trunk PTN plane is connected with a plane of the PTN of the ground city through a power saving trunk convergence L3 node; the trunk-saving PTN plane is connected with the core network through the trunk-saving floor L3 node.
Specifically, as shown in fig. 5, the trunking aggregation L3 node includes a first trunking aggregation L3 node (trunking aggregation L3-1) and a second trunking aggregation L3 node (trunking aggregation L3-2); the provincial trunk landing L3 nodes comprise a first provincial trunk landing L3 node (provincial trunk landing L3-1) and a second provincial trunk landing L3 node (provincial trunk landing L3-2).
The first dry-saving convergence L3 node (dry-saving convergence L3-1), the second dry-saving convergence L3 node (dry-saving convergence L3-2), the first dry-saving landing L3 node (dry-saving landing L3-1) and the second dry-saving landing L3 node (dry-saving landing L3-2) form a mouth-shaped dry-saving PTN plane.
Finally, the core network is introduced.
In an embodiment of the present application, the core network may include EPC and epc+, where EPC is configured to receive 4G service information and process the 4G service information. The EPC+ is a core network which is updated on the basis of the EPC and is used for receiving the 5G service information and processing the 5G service information.
For example, after the S1 service is accessed to the SPN L2 node by the gNB, the service is connected through the SPN plane of the city, and then through the PTN L3 node of the PTN plane of the city. Wherein, PTN L3 node of PTN-plane of city can distinguish the service information belonging to LTE service or NSA service through VPN and IP city section of different service information. The power save PTN plane node is then forwarded to the core network epc+. And XN flow between 4/5G base stations is completed by intercommunication connection between a PTN plane of the city and an SPN plane of the city.
As a specific example, as shown in fig. 6, the networking shown in fig. 3 may be protected by the following protection method.
The gNB is connected into SPN biplane-L2 in the ground city through 10GE optical fibers, then ring network protection of SPN biplane-L3 in the ground city and electric layer subnet connection protection (Sub NetworkConnection Protection, SNCP) of the OTN in the metropolitan area network are protected to SPN L2/L3 nodes. Protection is performed between the SPN L2/L3 nodes and the different sites of the orotype networking between the SPN L3 nodes through an OTN of a metropolitan area network (such as a city SPN two plane and a city PTN one plane), protection of an L3 VPN layer is realized through a Tunnel link (Tunnel 1:1) and a VPN Fast Reroute (FRR), tunnel link automatic protection switching (Automatic Protection Switch, APS) is used for protecting Tunnel links between the nodes, and VPN FRR is used for protecting each node in the metropolitan area network (such as a city SPN two plane and a city PTN one plane).
The SPN L3 node is in butt joint with the tail fiber of the machine room, and is in butt joint with local IP (Native IP) service by the aid of IP and VPN hybrid FRR protection.
The dry-saving convergence L3-1 and the dry-saving landing L3-1 are in butt joint with the electric layer SNCP through a line OLP of one plane of the dry-saving OTN, and the dry-saving convergence L3-2 and the dry-saving landing L3-2 are in butt joint with the electric layer SNCP through a line OLP of two planes of the dry-saving OTN. The power saving trunk converging L3-1 and the power saving trunk landing L3-2 are in butt joint through an electric layer SNCP of the OTN between power saving trunk PTN planes.
The provincial dry floor L3-1 and EPC+ in the core network are bare tail fibers of the same machine room, different sites are butted through an OTN (optical transport network) of a metropolitan area network (such as a SPN two plane in the city and a PTN one plane in the city), and the protection mode is IP and VPN hybrid FRR protection through local IP (Native IP) service butt joint, so that the OTN protection from end to end in the whole process is realized.
The OTN protection of the mouth-shaped networking of the dry-saving PTN plane relates to the line OLP+ electric layer SNCP protection of the two dry-saving OTN planes and the electric layer SNCP protection of the two city area networks OTNs (such as the city SPN two planes and the city PTN one plane).
For example, XZ-OADM sites have a total of 4 outgoing cables in both directions, and it is necessary to ensure that the routes of the 4 cables are completely independent and have no co-routed portions.
Because the trunk-saving convergence L3-1 and the trunk-saving convergence L3-2 of the trunk-saving PTN plane port-type networking and the trunk-saving landing L3-1 and the trunk-saving landing L3-2 belong to different addresses, optical Add-Drop Multiplexer (OADM) sites of the trunk-saving OTN two planes also belong to different addresses, and the OADM sites of the trunk-saving OTN two planes also have 4 Optical cables with different routes. An optical trunk amplifier station (Optical Line Amplifier, OLA) station is active for one plane and standby for two planes, ensuring that only one plane performs line-side OLP protection switching when the same optical cable is interrupted. In the OTN equipment of same office, ensure to use two sets of different electrical power generating systems, OTN and SPN of same office also use different power to arrange first cabinet, can not cause the circumstances of power failure simultaneously.
The switching condition of the OTN multiple protection may include various situations, for example, when a serious error code guide occurs in a main channel of a certain line, the optical power of the main channel drops to the switching condition or the optical cable is broken, the OTN which saves a certain plane is caused to perform OLP protection switching, the switching duration is less than 50ms, the port delay time of the SPN plane needs to be set to 100ms, and the simultaneous switching is avoided, so that the service is switched back and forth.
For another example, when the performance of the optical cable is reduced, the OLP switching condition is not reached, the performance of some long-distance service single waves is poor after the optical cable is switched to standby, or the performance degradation of a single channel occurs, so that the service is not available (because the OLP can only detect the optical power, the optical power can only be switched through optical power comparison, and the electrical layer SNCP protection of the OTN plane can not be caused by detecting the condition switching such as B1 error code out-of-limit alarm (B1 over), frame Loss (LOF), and the like).
For another example, due to the uniqueness of the client side single board of one plane of the OTN, when the client side single board is abnormal, the port is abnormal, the tail fiber of the OTN and the PTN are in butt joint, or the line OLP and the electrical layer SNCP of the OTN are not normally switched, the protection switching of the PTN side is triggered;
in addition, when the power supply of the column head cabinet of a certain office is abnormal, after the OTN is powered down, the other plane of the OTN performs PTN service protection, for example, after the SPN is powered down, protection switching can be realized through the port-type networking or the triangle networking of the SPN.
The networking and networking protection method provided by the embodiment of the application comprises the following steps: eNB, gNB, packet transport network PTN of city, slice packet network SPN of city, dry packet transport network PTN of province, core network; the eNB is in communication connection with the first plane of the PTN in the city and is used for sending 4G service information to the first plane of the PTN in the city; the gNB is in communication connection with the SPN plane of the city and is used for sending 5G service information to the SPN plane of the city; the local city PTN plane is in communication connection with the trunk-saving PTN plane in a local IP connection mode and is used for sending 4G service information to the trunk-saving PTN plane; the SPN two planes of the city are in communication connection with the PTN one plane of the city in a local IP connection mode, and are used for forwarding 5G service information to the dry-saving PTN plane through the PTN one plane of the city, so that the dry-saving PTN plane is used for sending the 5G service information to a core network; the trunk-saving PTN plane is connected with the core network and is used for sending 4G service information and/or 5G service information to the core network, so that according to the embodiment of the application, the SPN two planes in the city can be communicated with the PTN plane in the city, the traffic of the XN interface is prevented from bypassing the trunk-saving PTN plane or bypassing the core network, and the low-delay requirement of NSA service is further ensured.
It should be clear that the present application is not limited to the particular arrangements and processes described above and illustrated in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps, after appreciating the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be different from the order in the embodiments, or several steps may be performed simultaneously.
Aspects of the present disclosure are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, which are intended to be included in the scope of the present application.
Claims (9)
1. A networking, comprising: eNB, gNB, ground city packet transport network PTN one plane, ground city slice packet network SPN two plane, dry-saving packet transport network PTN plane and core network;
the eNB is in communication connection with the first plane of the PTN of the city and is used for sending 4G service information to the first plane of the PTN of the city;
the gNB is in communication connection with the city SPN plane and is used for sending 5G service information to the city SPN plane;
the local city PTN plane is in communication connection with the trunk-saving PTN plane in a local IP connection mode and is used for sending the 4G service information to the trunk-saving PTN plane;
the SPN two planes of the city are in communication connection with the PTN one plane of the city in a local IP connection mode, and are used for forwarding the 5G service information to the dry-saving PTN plane through the PTN one plane of the city so as to be used for sending the 5G service information to a core network through the dry-saving PTN plane;
the dry-saving PTN plane is connected with the core network and is used for sending the 4G service information and/or the 5G service information to the core network;
the L3 node of the SPN two-plane of the city is in communication connection with the L3 node of the PTN one-plane of the city in a local IP connection mode.
2. The networking of claim 1, wherein the municipality PTN-plane comprises PTN L2 nodes, PTN 2/L3 nodes, PTN 3 nodes;
the PTN L2 node is positioned at an access layer of a plane of the PTN of the city;
the PTN L2/L3 node is positioned at a convergence layer of a plane of the PTN in the city and is used for terminating the L2 service information in the convergence layer;
the PTN L2 node is in communication connection with the PTN 2/L3 node and is used for sending the 4G service information to the PTN 2/L3 node;
the PTN L2/L3 node is in communication connection with the PTN 3 node and is used for sending the 4G service information to the PTN 3 node.
3. The networking of claim 2, wherein the municipality PTN-plane is communicatively coupled to the trunk-saving PTN-plane by way of a local IP connection, comprising:
and the ground PTN plane is in communication connection with the trunk-saving PTN plane through the PTN L3 node in a local IP connection mode.
4. The networking of claim 2, wherein the PTN L2/L3 nodes comprise a first PTN L2/L3 node and a second PTN L2/L3 node; the PTN L3 node comprises a PTN 3 node and a second PTN 3 node;
the first PTN L2/L3 node, the second PTN 2/L3 node, the PTN 3 node and the second PTN 3 node form a plane of the ground PTN in a mouth shape.
5. The networking of claim 1, wherein the municipality SPN planes include municipality SPN L2 nodes, SPN L2/L3 nodes, SPN L3 nodes;
the SPN L2 node is positioned at an access layer of the SPN two planes of the city;
the SPN L2/L3 node is positioned at a convergence layer of the SPN two planes of the city and is used for ending the L2 service information in the convergence layer;
the SPN L2 node is in communication connection with the SPN L2/L3 node and is used for sending the 5G service information to the SPN L2/L3 node;
the SPN L2/L3 node is in communication connection with the SPN L3 node and is used for sending the 5G service information to the SPN L3 node.
6. The networking of claim 5, wherein the SPN L2/L3 nodes comprise a first SPN L2/L3 node and a second SPN L2/L3 node; the SPN L3 node comprises a first SPN L3 node and a second SPN L3 node;
the first SPN L2/L3 node, the second SPN L2/L3 node, the first SPN L3 node and the second SPN L3 node form the SPN two planes of the city in the shape of a Chinese character kou.
7. The networking of claim 1, wherein the trunked-down PTN plane comprises trunked-down aggregation L3 nodes and trunked-down landing L3 nodes;
the city PTN plane is in communication connection with the provincial dry PTN plane, and comprises the following steps:
the dry-saving PTN plane is connected with the first plane of the city PTN through the dry-saving convergence L3 node;
the dry-saving PTN plane is connected with the core network and comprises:
and the trunk-saving PTN plane is connected with the core network through the trunk-saving floor L3 node.
8. The networking of claim 7, wherein the trunk aggregation L3 node comprises a first trunk aggregation L3 node and a second trunk aggregation L3 node; the provincial trunk landing L3 node comprises a first provincial trunk landing L3 node and a second provincial trunk landing L3 node;
the first dry-saving convergence L3 node, the second dry-saving convergence L3 node, the first dry-saving landing L3 node and the second dry-saving landing L3 node form the dry-saving PTN plane in a mouth shape.
9. A networking protection method, characterized in that the method is applied to the networking according to any one of claims 1-8, tunnel link groups are configured between any two nodes in the networking, and each tunnel link group comprises a plurality of tunnel links; each node in the networking is borne on an Optical Transport Network (OTN) device; the method comprises at least one of:
under the condition that the detected optical power change value is larger than a preset threshold value, switching the current tunnel link;
under the condition that at least one of link error code in the tunnel link is detected to be larger than a preset link error code threshold value, single wave error code is detected to be larger than a preset single wave error code threshold value and frame loss LOF and B1 error code out-of-limit alarm occurs, the current tunnel link is switched;
the current tunnel link is switched upon detection of at least one of: the OTN device comprises a user side port fault, a user side tail fiber fault, a user side single board fault, a ground PTN one-plane side port fault and a ground PTN one-plane side single board fault of the OTN device.
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