CN113630313B

CN113630313B - Transmission network system and transmission network test system

Info

Publication number: CN113630313B
Application number: CN202010390111.3A
Authority: CN
Inventors: 朱益佳; 吴越; 徐詹超; 吕昶; 王延长; 张卷卷
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Zhejiang Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Zhejiang Co Ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2023-04-25
Anticipated expiration: 2040-05-08
Also published as: CN113630313A

Abstract

The embodiment of the invention relates to the technical field of transmission and discloses a transmission network system and a transmission network test system. The transmission network system includes: a first PTN network and an IP bearer network; the first PTN network comprises a first PTN main link provided with a first trunk-saving core device, the IP bearing network comprises a first bearing main link provided with a first edge router and a third edge router, the first trunk-saving core device is connected with the first edge router, the first edge router is connected with the third edge router, the first trunk-saving core device is used for being connected with first access network equipment, and the third edge router is used for being connected with the core network; the first PTN network is used for receiving first service data sent by the first access network device and transmitting the first service data to the core network through the first PTN main link, the first bearer main link and the third edge router. Through the mode, the embodiment of the invention can realize the intercommunication of the transmission PTN network and the IP bearing network, thereby realizing the intercommunication from the eNB to the core network element in the cross-province.

Description

Transmission network system and transmission network test system

Technical Field

The embodiment of the invention relates to the technical field of transmission, in particular to a transmission network system and a transmission network test system.

Background

The S1 interface of the current network core network element carries through a transmission PTN network, and an Evolved Node B (eNB) base station is connected to the core network element through the transmission PTN network, so that intercommunication of intra-provincial service is realized. With centralized construction and deployment of telecommunication cloud area services, core network elements are deployed in a unified mode, and eNB base stations in all provinces are communicated with the core network element services of the telecommunication cloud area through a network. However, the current transmission PTN network does not have trans-provincial transmission PTN resources, so that trans-provincial interworking from the eNB base station to the core network element cannot be achieved.

Disclosure of Invention

In view of the above problems, embodiments of the present invention provide a transmission network system and a transmission network test system, which can implement interworking between a transmission PTN network and an IP bearer network, so as to implement interworking between an eNB base station and a core network element in a trans-province.

According to a first aspect of an embodiment of the present invention, there is provided a transmission network system including: a first PTN network and an IP bearer network; the first PTN network comprises a first PTN main link provided with a first dry-saving core device, the IP bearing network comprises a first bearing main link provided with a first edge router and a third edge router, the first dry-saving core device is connected with the first edge router, the first edge router is connected with the third edge router, the first dry-saving core device is used for being connected with first access network equipment, and the third edge router is used for being connected with a core network; the first PTN network is configured to receive first service data sent by the first access network device, and transmit the first service data to the core network through the first PTN main link, the first bearer main link, and the third edge router.

In an optional manner, the first PTN main link further includes a first access device, a first convergence device, and a first trunk-saving convergence device that are sequentially connected, where the first trunk-saving convergence device is connected to the first trunk-saving core device, and the first access device is configured to connect to the first access network device, so that communication between the first access network device and the first trunk-saving core device is enabled.

In an alternative manner, the first bearer main link further includes a first access router and a first core router, the first access router is connected to the first edge router, the first access router is further connected to the first core router, and the first core router is connected to the third edge router.

In an optional manner, the first bearer main link further includes a first aggregation router and a third access router, the first access router is connected to the first core router through the first aggregation router, and the first core router is connected to the third edge router through the third access router.

In an alternative manner, the IP bearer network further includes a first bearer sidelink provided with a second edge router and a fourth edge router, the second edge router being connected to the first edge router, the second edge router being connected to the fourth edge router, the fourth edge router being configured to connect to the core network;

The first PTN network further includes a first PTN sidelink provided with a second dry-saving core device, where the second dry-saving core device is connected to the first access network device and the second edge router, and the first PTN network is further configured to transmit the first service data to the core network through the second dry-saving core device and the first bearer sidelink when a communication failure occurs between the first dry-saving core device and the first edge router or when a communication failure occurs between the first bearer main link.

In an optional manner, the first dry core device is configured to send first message information to the first edge routing device; the first edge routing device is configured to return first message return information to the first trunk-saving core device when receiving the first message information; and the first dry-saving core equipment is further used for determining a communication fault between the first dry-saving core equipment and the first edge router if the first message return information returned by the first edge router is not received within a first preset time.

In an alternative manner, the first dry core device and the first edge routing device are connected by at least two links.

In an alternative, the system further comprises: a second PTN network; the second PTN network includes a second PTN main link provided with a third trunk-saving core device, the IP bearer network further includes a second bearer main link provided with a fifth edge router, the third trunk-saving core device is connected to the fifth edge router, the fifth edge router is connected to the third edge router, and the third trunk-saving core device is used for connecting to a second access network device; the second PTN network is configured to receive second service data sent by the first access network device, and transmit the second service data to the core network through the second PTN main link, the second bearer main link, and the third edge router.

In an alternative manner, the first service data includes first registration signaling data; the first PTN network is configured to receive the first registration signaling data sent by the first access network device, and transmit the first registration signaling data to the core network through the first PTN main link, the first bearer main link, and the third edge router, where the first registration signaling data is sent by an extra-provincial terminal to the first access network device; the first PTN network is further configured to receive first registration response data returned by the core network according to the first registration signaling data, and transmit the first registration response data to the first access network device through the third edge router, the first bearer main link, and the first PTN main link.

According to a second aspect of an embodiment of the present invention, there is provided a transmission network test system, including: test equipment and the transmission network system; the test equipment is used for collecting first flow information of an access node of a first PTN main link of the transmission network system, collecting second flow information of a control plane node of a core network connected with the transmission network system, and determining transmission quality of the transmission network system according to the first flow information and the second flow information.

In the embodiment of the invention, the first PTN receives the first service data sent by the first access network equipment, transmits the first service data to the core network through the first PTN main link, the first bearing main link and the third edge router, and connects the transmission PTN with the IP bearing network in a butt joint way, so that the first access network equipment is connected with the core network through the transmission PTN and the IP bearing network, the flow of the first access network equipment is converged and borne by the transmission PTN first, and then reaches the core network through the IP bearing network, thereby realizing the intercommunication from the trans-provincial eNB base station to the core network element.

The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present invention can be more clearly understood, and the following specific embodiments of the present invention are given for clarity and understanding.

Drawings

The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic structural diagram of a transmission network system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a transmission network system according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a transmission network testing system according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein.

The S1 interface of the current network core network element carries through a transmission PTN network, the service of an evolution Node B (eNB) base station is transmitted to the core network through the transmission PTN network, and an L2+L3 networking mode (only an L3VPN is configured above a backbone layer, and other access layers are configured with an L2 VPN) is adopted, so that intercommunication of intra-provincial service is realized.

The inventor finds out after analyzing the prior art that the current transmission PTN network does not have trans-provincial transmission PTN resources, so that the trans-provincial communication from the eNB base station to the core network element cannot be realized.

Based on this, the embodiment of the invention provides a transmission network system, a test system and a network system, which can realize the intercommunication between a transmission PTN network and an IP bearing network, thereby realizing the intercommunication between an eNB base station of a trans-province and a core network element.

In particular, embodiments of the present invention are further described below with reference to the accompanying drawings.

It should be understood, however, that the following examples provided herein may be combined with one another to form new embodiments, so long as they do not conflict.

Fig. 1 is a schematic structural diagram of a transmission network system according to an embodiment of the present invention. The transmission network system is applied to a long term evolution (Long Term Evolution, LTE) architecture. As shown in fig. 1, the transmission network system 10 includes: a first PTN network 11 and an IP bearer network 12. The first PTN network 11 is used for connecting to the first access network device 101, the IP bearer network 12 is used for connecting to the core network (Evolved Packet Core, EPC) 20, and the first PTN network 10 and the IP bearer network 12 are connected to enable the first access network device 101 to communicate with the core network 20 through the first PTN network 11 and the IP bearer network 12.

The first PTN network 11 includes a first PTN main link 111 provided with a first trunk-saving core device, the ip bearer network 12 includes a first bearer main link 121 provided with a first edge router CE 01 and a third edge router CE 03, the first trunk-saving core device is connected to the first edge router CE 03, the first edge router CE 01 is connected to the third edge router CE 03, the first trunk-saving core device is used to connect to the first access network device 101, and the third edge router CE 03 is used to connect to the core network 20. The first PTN network 11 is configured to receive the first service data sent by the first access network device 101, and transmit the first service data to the core network 20 through the first PTN main link 111, the first bearer main link 121, and the third edge router CE 03. Through the mode, the intercommunication between the transmission PTN network and the IP bearing network is realized by utilizing the access capability of the IP bearing network, so that the intercommunication between the cross-province eNB base station and the core network element is realized.

Specifically, the first access network device 101 may include an Evolved Node B (eNB). The eNB is used for being responsible for wireless access functions and ground interface functions of the E-UTRAN, including realizing radio bearer control, wireless admission control, connection mobility control and the like; completing the dynamic resource allocation (scheduling) of the uplink and downlink terminals; IP header compression and user data stream encryption; a mobility management entity (Mobility Management Entity, MME) selection at terminal attach; scheduling transmission of paging and broadcast messages initiated by MME; measurements and measurement reports on mobility configuration and scheduling are done, etc. A User Equipment (UE) may directly access an eNB and then connect to a network through a transmission network system to obtain a corresponding service. Alternatively, the UE may be a smart phone, a multimedia device, a streaming media device, or the like.

The first PTN network 11 is a packet transport network (Packet Transport Network, PTN), which is a multi-service unified transport technology based on packet switching and connection oriented, and not only can better carry ethernet services, but also takes into account conventional TDM and ATM services, and satisfies basic properties such as high reliability, flexible expansion, strict QoS, and perfect OAM.

Wherein the first PTN network 11 comprises a first PTN main link 111. The first PTN main link 111 is connected to the first access network device 101 and the IP bearer network 12, respectively.

The first PTN main link 111 includes a first access device, a first convergence device, a first trunk-saving convergence device, and a first trunk-saving core device (corresponding to the access PTN 01, the convergence PTN 01, the trunk-saving convergence PTN 01, and the trunk-saving core PTN 01 in fig. 1, respectively). The first access device, the first convergence device, the first trunk-saving convergence device and the first trunk-saving core device are all PTN devices, and may be PTN devices of the same type or different types. The number of the first access equipment, the first convergence equipment, the first dry-saving convergence equipment and the first dry-saving core equipment is gradually decreased, so that the first access equipment is converged to the first convergence equipment, the first convergence equipment is converged to the first dry-saving convergence equipment, and finally the first dry-saving convergence equipment is converged to the first dry-saving core equipment. For example, the first access device may be disposed in each city, where the first convergence device is disposed in a core room of the city, and the first trunk-saving convergence device user converges the first convergence devices in each city, where the first trunk-saving core device is disposed in the core room of the trunk-saving center, and is configured to converge the first trunk-saving convergence devices. The first access device, the first convergence device, the first trunk-saving convergence device and the first trunk-saving core device are sequentially connected, and the first access device is used for connecting the first access network device 101 so that communication between the first access network device 101 and the first trunk-saving core device can be achieved, and therefore first service data of the first access network device 101 are transmitted to the first trunk-saving core device through the first access device, the first convergence device and the first trunk-saving convergence device.

Optionally, the first PTN network 11 further comprises a first PTN sidelink 112. The first PTN sidelink 112 is connected to the first access network device 101 and the IP bearer network 12, respectively.

The first PTN sidelink 112 includes a second access device, a second convergence device, a second trunk convergence device, and a second trunk core device (corresponding to the access PTN 02, the convergence PTN 02, the trunk convergence PTN 02, and the trunk core PTN 02 in fig. 1, respectively). The second access device, the second convergence device, the second trunk-saving convergence device and the second trunk-saving core device are all PTN devices, and may be PTN devices of the same type or different types. The number of the second access equipment, the second convergence equipment, the second dry-saving convergence equipment and the second dry-saving core equipment is gradually decreased, so that the second access equipment is converged to the second convergence equipment, the second convergence equipment is converged to the second dry-saving convergence equipment, and finally the second dry-saving convergence equipment is converged to the second dry-saving core equipment. For example, the second access device may be disposed in each city, where the second convergence device is disposed in a core room of the city, and the second trunk-saving convergence device user converges the second convergence devices of each city, where the second trunk-saving core device is disposed in a core room of the trunk-saving center, and is configured to converge the second trunk-saving convergence devices. The second access device, the second convergence device, the second trunk-saving convergence device and the second trunk-saving core device are sequentially connected, and the second access device is used for connecting the first access network device 101 so that communication between the first access network device 101 and the second trunk-saving core device is enabled, and therefore the first service data of the first access network device 101 are transmitted to the second trunk-saving core device through the second access device, the second convergence device and the second trunk-saving convergence device.

The second access device is further connected with the first access device, the second convergence device is further connected with the first convergence device, the second dry-saving convergence device is further connected with the first dry-saving convergence device, and the second dry-saving core device is further connected with the first dry-saving core device. When any link in the first PTN main link 111 fails in communication, it is possible to switch to a corresponding device in the first PTN sub link 112 so as not to affect the transmission of the first traffic data.

The IP bearer network 12 is a private network constructed by IP technology, and is used for carrying services (such as soft switch, video, and important customer VPN) with high transmission quality requirements. The IP bearer network 12 generally adopts a biplane, dual star and dual home high reliability design, carefully designs traffic switching models under various conditions, and adopts MPLS TE, FRR, BFD and other technologies to quickly detect network breakpoints, thereby shortening the time of switching between failed devices and links. The network design requires the light load of the loaded service, deploys two-layer/three-layer QOS, and ensures the quality of the loaded service. By adopting the measures, the IP bearing network 12 has the characteristics of low cost, good expansibility, flexible bearing service and the like of the IP network, and simultaneously has high reliability and safety of a transmission system.

Specifically, IP bearer network 12 includes a first bearer primary link 121. The first bearer primary link 121 is connected to the first trunk core device in the first PTN primary link 111 and the third edge router CE03, respectively.

The first bearer primary link 121 may be configured as a CE-AR-CR-CE. The first bearer primary link 121 includes: the first edge router CE 01, the first access router AR 01 and the first core router CR 01. One end of the first edge router CE 01 is connected to the first trunk-saving core device in the first PTN main link 111, and the other end of the first edge router CE 01 is connected to the third edge router CE03 through the first access router AR 01 and the first core router CR 01, so that communication between the first PTN main link 111 and the third edge router CE03 is enabled, and thus the first traffic data of the first access network device 101 is transmitted from the first trunk-saving core device to the third edge router CE03 through the first edge router CE 01, the first access router AR 01 and the first core router CR 01.

Optionally, the IP bearer network 12 further comprises a first bearer sidelink 122 and a fourth edge router CE 04. The fourth edge router CE 04 is connected to the core network 20. The first bearer sidelink 122 is connected to the second trunk core device and the fourth edge router CE 04 in the first PTN sidelink 112, respectively.

Wherein the first bearer sidelink 122 comprises: a second edge router CE 02, a second access router AR 02 and a second core router CR 02. One end of the second edge router CE 02 is connected to the second trunk core device in the first PTN sidelink 112, and the other end of the second edge router CE 02 is connected to the fourth edge router CE04 through the second access router AR 02 and the second core router CR 02 to enable communication between the first PTN sidelink 112 and the fourth edge router CE04, so that the first traffic data of the first access network device 101 is transmitted from the third trunk core device to the fourth edge router CE04 through the second edge router CE 02, the second access router AR 02 and the second core router CR 02.

The second edge router CE 02 is further connected to the first edge router CE 01, the second access router AR 02 is further connected to the first access router AR 01, the second core router CR 02 is further connected to the first core router CR 01, and the fourth edge router CE04 is further connected to the third edge router CE 03. When any device of the first bearer primary link 121 fails in communication, it is able to switch to the corresponding device of the first bearer secondary link 122, so as not to affect the transmission of the first service data. And, when communication between the first trunking core device (trunking PTN 01) and the first edge router CE 01 fails, the first traffic data may be transmitted to the core network 20 through the second trunking core device (trunking PTN 02) and the first bearer sub-link 122. The conditions of communication failure may include, among others, link congestion, link failure, equipment failure, etc.

The first trunking core device (or the second trunking core device) is configured to send the first message information to the first edge routing device CE01 (or the second edge routing device CE 02); the first edge routing device CE01 (or the second edge routing device CE 02) is configured to return, when receiving the first message information, first message return information to the first trunk-saving core device (or the second trunk-saving core device); the first dry-saving core device (or the second dry-saving core device) is further configured to determine a communication failure between the first dry-saving core device (or the second dry-saving core device) and the first edge router CE01 (or the second edge router CE 02) if the first message return information returned by the first edge router CE01 (or the second edge router CE 02) is not received within a first preset time. Of course, in some other embodiments, the first edge routing device CE01 may also send the first message information to the first trunk core device, and detect whether the first message return information returned by the first trunk core device is received within the first preset time, so as to determine whether a fault exists between the first trunk core device and the first edge router CE 01.

The first trunk-saving core device and the first edge routing device CE 01 and the second trunk-saving core device and the second edge routing device CE 02 are networked by adopting a double-node mouth font. And, the PTN device and the CE device (e.g., the first trunk-saving core device and the first edge-routing device CE 01 or the second trunk-saving core device and the second edge-routing device CE 02) are connected by at least two links, which are bundled together. The PTN device and the CE device realize route intercommunication in a mode of mutually indicating static routes.

Meanwhile, in order to improve the reliability of connection, one or more protocols such as SCTP, BFD for lag, IP FRR and the like are configured on the link where the PTN device and the CE device are in butt joint, so that the fast detection of the binding link is realized. The protocol configuration scheme of the link between the PTN device and the CE device includes: configuration of LACP+IP FRR (configuration of BFD for routing), CE-PTN configuration of LACP+IP FRR (configuration of BFD for lag), CE-PTN configuration of IP FRR+BFD for lag (no configuration of LACP), CE-PTN configuration of IP FRR+BFD for lag+BFD for routing (no configuration of LACP). The BFD for lag is used on the binding link where the PTN device and the CE device are interconnected, which is different from the traditional BFD detection that only one link state in the binding link can be randomly detected according to a hash algorithm, and the BFD for lag in the embodiment can detect the connectivity of all links in the binding link, and can be quickly and automatically switched to the rest available links when the quality degradation packet loss of one link occurs, thereby ensuring that the high available service of the network is not perceived. When the binding links are interrupted, the combined IP FRR technology can realize second-level fast switching to another plane link bearing, and service unaware is realized. For example, a BFD for lag protocol is deployed on a link between the first trunk-saving core device and the first edge routing device CE 01, so that a BFD session is established between the first trunk-saving core device and the first edge routing device CE 01, and BFD packet information is periodically sent between links thereof, if a party does not receive a BFD packet within a first preset time, the path is considered to be faulty, and the first service data is quickly switched to be carried on other available links in the bonded link. For another example, an IP FRR protocol is configured on a link between the first trunk-saving core device and the first edge routing device CE 01, the first trunk-saving core device and the first edge routing device CE 01 are preset to be active links, and the third trunk-saving core device and the fourth edge routing device CE 04 are preset to be standby links.

Optionally, as shown in fig. 2, the architecture of the first bearer primary link 121 may also be CE-AR-BR-CR-AR-CE. The first bearer primary link 121 may further comprise: a first aggregation router BR 01, a third access router AR 03. The first access router AR 01 is connected to the first core router CR 01 through the first aggregation router BR 01, and the first core router CR 01 is connected to the third edge router CE 03 through the third access router AR 03 to enable communication between the first PTN main link 111 and the third edge router CE 03. Accordingly, the first bearer sidelink 122 may further comprise: a second aggregation router BR 02, a fourth access router AR 04. The second access router AR 02 is connected to the second core router CR 02 through the second aggregation router BR 02, and the second core router CR 02 is connected to the fourth edge router CE 04 through the fourth access router AR 04 to enable communication between the first bearer sidelink 122 and the fourth edge router CE 04.

The core network 20 is configured to provide access to external networks (e.g., CMNET, internet, corporate lan, etc.) and operator services (e.g., multimedia messaging, multimedia broadcast and multicast services, etc.), and to support mobile handover between a plurality of different access technologies (e.g., EDGE, WCDMA, LTE, WLAN, CDMA, etc.). The core network 20 may include control plane nodes such as mobility management entities (Mobility Management Entity, MME), user plane nodes such as serving gateways (Signaling Gateway, S-GW), packet data network gateways (Packet data networks gateway, P-GW), and the like. In the present embodiment, the third edge router CE 03 and the fourth edge router CE 04 may be connected to the vmem of the core network 20 through an access switch (End of Row, EOR).

It should be noted that, the first access network device 101 refers to an access network device disposed in a first preset area, and the first preset area may be a province or a zone, etc. The core network 20 refers to a core network disposed in a second preset area, which may be a province or a region other than the first preset area, or the like. For example, the first access network device 101 is set in the a-province, and the core network 20 is set in the B-province. The existing second access network equipment is generally connected with the core network of the province through the PTN network, and the core networks of the provinces are independently deployed, so that the core networks of the provinces are not intercommunicated; in this embodiment, the first access network device 101 may be connected to an extra-provincial core network, so as to implement interworking between inter-provincial eNB base stations and core network elements. Therefore, the core network may be used as a large area core network of several provinces, for example, base stations of provinces a, B, C, and D are all connected to the core network set in province B, that is, the core network of province B, as a large area core network through the transmission PTN network and the IP bearer network, so that provinces a, B, C, and D share one core network.

In some embodiments, the first traffic data may include first registration signaling data. The terminal must first register with the network in order to acquire the service provided by the network. Thus, the first registration signaling data refers to signaling data that the extra-home terminal uses for registering with the core network 20. The first registration signaling data is sent by the extra-provincial terminal to the first access network device 101. After the extraprovincial terminal sends the first registration signaling data to the first access network device 101, the first PTN network 11 receives the first registration signaling data sent by the first access network device 101, and transmits the first registration signaling data to the core network 20; after the core network 20 returns the first registration response data to the first PTN network 11 according to the first registration signaling data, the first PTN network 11 receives the first registration response data and transmits the first registration response data to the first access network device 101. The first registration response data may be, for example, a registration completion message.

The first PTN network 11 transmits the first service data to the core network 20, which may specifically be: the first PTN network 11 transmits the first traffic data to the core network 20 through the first PTN main link 111 (or the first PTN sub link 112), the first bearer main link 121 (or the first bearer sub link 122), and the third edge router CE 03 (or the fourth edge router CE 04) in this order. The first PTN network 11 transmits the first registration response data to the first access network device 101, specifically may be: the first PTN network 11 transmits the first registration response data to the first access network device 101 through the third edge router CE 03 (or fourth edge router CE 04), the first bearer primary link 121 (or first bearer sidelink 122), the first PTN primary link 111 (or first PTN sidelink 112) in this order.

In this embodiment, by interfacing the transmission PTN network and the IP bearer network, the first access network device 101 is connected to the core network 20 through the transmission PTN network and the IP bearer network, so as to implement that the traffic of the first access network device is converged and carried by the transmission PTN network, and then reaches the core network 20 through the IP bearer network, thereby implementing interworking from the eNB base station to the core network element across provinces.

In some embodiments, the transmission network system 10 further comprises: a second PTN network 13. The second PTN network 13 is used for connecting to the second access network device 102, and the second PTN network 13 and the IP bearer network 12 are connected such that the second access network device 102 is capable of communicating with the core network 20 through the second PTN network 13 and the IP bearer network 12. The second PTN network 13 is configured to receive the second service data sent by the second access network device 102, and transmit the second service data to the core network 20 through the second PTN network 13 and the IP bearer network 12.

It should be noted that the second access network device 102 may be a base station disposed in the second preset area. For example, the first access network device 101 is set in the a-province, and the second access network device 102 and the core network 20 are set in the B-province.

Specifically, the second PTN network 13 is also a packet transport network (Packet Transport Network, PTN). The structure of the second PTN network 13 may be similar to that of the first PTN network 11. The second PTN network 13 includes a second PTN main link 131. The second PTN main link 131 is connected to the second access network device 102 and the IP bearer network 12, respectively.

The second PTN main link 131 includes a third access device, a third aggregation device, a third trunk aggregation device, and a third trunk core device (corresponding to the access PTN 03, the aggregation PTN 03, the trunk aggregation PTN 03, and the trunk core PTN 03 in fig. 1, respectively). The connection and the function of the third access device, the third convergence device, the third trunk-saving convergence device, and the third trunk-saving core device are the same as those of the first access device, the first convergence device, the first trunk-saving convergence device, and the first trunk-saving core device in the first PTN main link 111, and are not described here again.

Optionally, the second PTN main link 131 also includes a second PTN sidelink 132. Second PTN sidelink 132 the first PTN sidelink 112 is connected to the second access network device 102 and the IP bearer network 12, respectively.

The second PTN sidelink 132 includes a fourth access device, a fourth convergence device, a fourth trunk convergence device, and a fourth trunk core device (corresponding to the access PTN 04, the convergence PTN 04, the trunk convergence PTN 04, and the trunk core PTN 04 in fig. 1, respectively). The connection and the function of the fourth access device, the fourth convergence device, the fourth dry-saving convergence device, and the fourth dry-saving core device are the same as the connection and the function of the second access device, the second convergence device, the second dry-saving convergence device, and the second dry-saving core device in the first PTN sidelink 112, and are not described herein.

Wherein the IP bearer network 12 further comprises a second bearer primary link 123. The second bearer main link 123 is connected to the third trunk core device in the second PTN main link 131 and the third edge router CE03, respectively.

Wherein the second bearer primary link 123 comprises: a fifth edge router CE 05, a fifth access router AR 05 and a third core router CR 03. The connection and the function of the fifth edge router CE 05, the fifth access router AR 05 and the third core router CR 03 are the same as those of the first edge router CE 01, the first access router AR 01 and the first core router CR 01 in the first bearer main link 121, and are not described here again. The fifth edge router CE 05 is connected to the third trunk core device, and the third core router CR 03 is connected to the third edge router CE03, so that the second PTN main link 131 can be connected to the core network 20, so that the second service data of the second access network device 102 is transmitted from the third trunk core device to the third edge router CE03 through the fifth edge router CE 05, the fifth access router AR 05, and the third core router CR 03.

Optionally, the IP bearer network 12 further comprises a second bearer sidelink 124. The second bearer sidelink 124 is connected to a fourth trunk core device and a fourth edge router CE04 in the second PTN sidelink 132, respectively. Wherein the second bearer sidelink 124 comprises: a sixth edge router CE06, a sixth access router AR 06 and a fourth core router CR 04.: the connection and the function of the sixth edge router CE06, the sixth access router AR 06 and the fourth core router CR 04 are the same as the connection and the function of the second edge router CE 02, the second access router AR 02 and the second core router CR 02 in the first bearer sidelink 122, and are not described here again. The sixth edge router CE06 is connected to the fourth dry core device, and the fourth core router CR 04 is connected to the fourth edge router CE04, so that the second PTN sub-link 132 can be connected to the core network 20, so that the second service data of the second access network device 102 is transmitted from the fourth dry core device to the fourth edge router CE04 through the sixth edge router CE06, the sixth access router AR 06 and the fourth core router CR 04.

Optionally, as shown in fig. 2, the second bearer primary link 123 may further include: the third aggregation router BR 03 and the seventh access router AR 07, and correspondingly, the second bearer sidelink 124 may further comprise: the specific connection manner of the fourth aggregation router BR 04 and the eighth access router AR 08 is shown in fig. 2, and will not be described herein.

In this embodiment, the core network 20 may be used as a large area core network, and is connected to base stations in multiple provinces in and out of the province, so that the utilization rate of resources is effectively improved through virtualized deployment of centralized core network elements, the problem that the core network elements are independently deployed in each province originally, and the utilization rate of resources is uneven and more idle is solved, and the cost of building the trans-province PTN by using the existing trans-province IP bearer network connection resources can be obviously reduced.

In this embodiment, by interfacing the transmission PTN network and the IP bearer network, the first access network device 101 is connected to the core network through the transmission PTN network and the IP bearer network, and the second access network device 102 is also connected to the core network through the transmission PTN network and the IP bearer network, so that traffic of the first access network device is converged and carried by the transmission PTN network, and then reaches the core network through the IP bearer network, thereby implementing interworking from the eNB base station to the core network element across provinces.

Fig. 3 is a schematic structural diagram of a transmission network testing system according to an embodiment of the present invention. As shown in fig. 3, the transmission network testing system 30 includes: test equipment and a transmission network system 10. The transmission network system 10 is the same as the transmission network system 10 in the above embodiment, and will not be described here again.

Wherein the test apparatus comprises a first test device 311 and a second test device 312. The first testing device is connected to an access node of the first PTN main link 111 of the transmission network system 10, wherein the access node may be a first access device or a second access device. The second testing device 312 is connected to a control plane node of the core network, where the control plane node of the core network may be a third edge router, or a fourth edge router, or an access switch connected to the third edge router and the fourth edge router.

The test device is configured to collect, by using the first test device 311, first traffic information of an access node of a first PTN main link of the transmission network system 10, and second traffic information of a control plane node of a core network connected to the transmission network system 10, and determine transmission quality of the transmission network system according to the first traffic information and the second traffic information.

The first traffic information and the second traffic information may be information of the collected data packet, and the transmission quality may include a packet loss rate, a delay, a jitter rate, and the like. The determining the transmission quality of the transmission network system according to the first traffic information and the second traffic information may specifically be: determining the number of lost data packets according to the data packets acquired in the first flow information and the data packets acquired in the second flow information, dividing the number of lost data packets by the number of data packets acquired in the first flow information, and calculating to obtain a packet loss rate; subtracting the time for collecting the data packet in the first flow information from the time for collecting the data packet in the second flow information, and calculating to obtain time delay; and dividing the delay time difference of adjacent data packets by the sequence number difference of the data packets according to the data packets acquired in the second flow information to obtain the jitter rate.

Wherein, can set up several kinds of trouble scenes and carry out the test to the transmission quality of transmission network system under several kinds of trouble scenes is tested. Several failure scenarios may include: the system comprises a CE side intercommunication single-link fault, a CE side intercommunication full-link fault, a PTN side intercommunication single-link fault, a PTN side intercommunication full-link fault, a CE single-node service withdrawal fault, a CE side single-core fault, a CE side link congestion fault and the like.

The embodiment of the invention collects the first flow information of the access node of the first PTN main link of the transmission network system 10 through the test equipment, collects the second flow information of the control plane node of the core network connected with the transmission network system 10, and determines the transmission quality of the transmission network system 10 according to the first flow information and the second flow information, so that the real base station can be tested, after converging through the PTN network, connected to the CE through the IP bearing network and finally reaches the core network element vMME, thereby testing the transmission network system 10.

In some embodiments, the transmission network system 10 may also be tested by an analog base station. The transmission network test system includes: analog base stations and a transmission network system 10. The analog base station is an analog base station in a DC resource pool. The analog base station is respectively connected with the first dry-saving core equipment and the second dry-saving core equipment in the transmission network system 10, so that the analog base station eNB traffic reaches the core network vMME through the dry-saving core equipment and the IP bearing network 12 in the same DC cloud resource pool in the extra-saving core network 20, and the analog base station eNB traffic reaches the core network vMME through the transmission PTN and the IP bearing network CE. By the above mode, the problem that the pressure test cannot be realized due to the insufficient number of users of the real base station is solved, and the transmission network system 10 can be tested more conveniently.

The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general-purpose systems may also be used with the teachings herein. The required structure for a construction of such a system is apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It will be appreciated that the teachings of the present invention described herein may be implemented in a variety of programming languages, and the above description of specific languages is provided for disclosure of enablement and best mode of the present invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the above description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specifically stated.

Claims

1. A transmission network system, the system comprising: a first PTN network and an IP bearer network;

the first PTN network comprises a first PTN main link provided with a first dry-saving core device, the IP bearing network comprises a first bearing main link provided with a first edge router and a third edge router, the first dry-saving core device is connected with the first edge router, the first edge router is connected with the third edge router, the first dry-saving core device is used for being connected with first access network equipment, and the third edge router is used for being connected with a core network; the IP bearer network further comprises a first bearer sidelink provided with a second edge router and a fourth edge router, wherein the second edge router is connected with the first edge router, the second edge router is connected with the fourth edge router, and the fourth edge router is used for being connected with the core network;

The first PTN network is configured to receive first service data sent by the first access network device, and transmit the first service data to the core network through the first PTN main link, the first bearer main link, and the third edge router; the first PTN network further includes a first PTN sidelink provided with a second dry-saving core device, where the second dry-saving core device is connected to the first access network device and the second edge router, and the first PTN network is further configured to transmit the first service data to the core network through the second dry-saving core device and the first bearer sidelink when a communication failure occurs between the first dry-saving core device and the first edge router or when a communication failure occurs between the first bearer main link.

2. The system of claim 1, wherein the first PTN main link further comprises a first access device, a first aggregation device, and a first trunk-saving aggregation device connected in sequence, the first trunk-saving aggregation device being connected to the first trunk-saving core device, the first access device being configured to connect to the first access network device to enable communication between the first access network device and the first trunk-saving core device.

3. The system of claim 1, wherein the first bearer primary link further comprises a first access router, a first core router, the first access router coupled to the first edge router, the first access router further coupled to the first core router, the first core router coupled to the third edge router.

4. The system of claim 3, wherein the first bearer primary link further comprises a first aggregation router through which the first access router is coupled to the first core router and a third access router through which the first core router is coupled to the third edge router.

5. The system of claim 1, wherein the system further comprises a controller configured to control the controller,

the first dry-saving core device is used for sending first message information to the first edge router;

the first edge router is used for returning first message return information to the first trunk-saving core equipment when receiving the first message information;

and the first dry-saving core equipment is further used for determining a communication fault between the first dry-saving core equipment and the first edge router if the first message return information returned by the first edge router is not received within a first preset time.

6. The system of claim 1, wherein the first trunk core device and the first edge router are connected by at least two links.

7. The system of claim 1, wherein the system further comprises: a second PTN network;

the second PTN network includes a second PTN main link provided with a third trunk-saving core device, the IP bearer network further includes a second bearer main link provided with a fifth edge router, the third trunk-saving core device is connected to the fifth edge router, the fifth edge router is connected to the third edge router, and the third trunk-saving core device is used for connecting to a second access network device;

the second PTN network is configured to receive second service data sent by the first access network device, and transmit the second service data to the core network through the second PTN main link, the second bearer main link, and the third edge router.

8. The system of any of claims 1-7, wherein the first traffic data comprises first registration signaling data;

the first PTN network is configured to receive the first registration signaling data sent by the first access network device, and transmit the first registration signaling data to the core network through the first PTN main link, the first bearer main link, and the third edge router, where the first registration signaling data is sent by an extra-provincial terminal to the first access network device;

The first PTN network is further configured to receive first registration response data returned by the core network according to the first registration signaling data, and transmit the first registration response data to the first access network device through the third edge router, the first bearer main link, and the first PTN main link.

9. A transmission network testing system, comprising: test equipment and a transmission network system according to any of claims 1-7;

the test equipment is used for collecting first flow information of an access node of a first PTN main link of the transmission network system, collecting second flow information of a control plane node of a core network connected with the transmission network system, and determining transmission quality of the transmission network system according to the first flow information and the second flow information.