Transmission network cutover conflict determination method

Abstract

Disclosed in the present invention is a transmission network cutover conflict determination method, comprising: acquiring all resource information in a transmission network; on the basis of the resource information, using a recursive query method to query resources borne by each layer in the transmission network, so as to obtain a bearer resource intermediate table; on the basis of the bearer resource intermediate table and dual-end site information, computing a protection mode of a layer where a network cutover point is located, so as to obtain a resource protection set; using the bearer resource intermediate table and the resource protection set to generate full resource topological data; inputting a network cutover condition, determining the type of a cutover resource on the basis of the network cutover condition, and querying an affected upper-layer resource from the full resource topological data; determining whether a cutover section and the affected upper-level resource are protected and what the specific protection modes are, so as to determine whether cutover affects a service; and, on the basis of the affected upper-layer resource and whether there is a protection scenario, determining whether the cutover has a conflict. The present invention achieves determination of cutover conflicts of various resource types.

Description

A method for determining conflict in transmission network cutover Technical Field

[0001] The present invention relates to the field of network transmission technology, and in particular to a method for determining conflicts in transmission network cutover. Background Art

[0002] China Telecom's long-distance network resource management system manages all of China Telecom's international, inter-provincial primary trunk, intra-provincial secondary trunk, and overseas company long-distance network resources. The cutover query subsystem is part of China Telecom's long-distance network resource management system. When a trunk system or channel fails, the provincial company reports the cutover application to the group. After collecting the cutover applications from various provinces, the group determines whether there is a conflict. If there is a conflict, the cutover plan is adjusted to eliminate the conflict. Then, the affected circuits are queried based on the cutover plan and the customer is notified. With the growth of business volume over the years, the diversification of user needs, and the group's requirements for unified management and control of long-distance resource system data, the current cutover query subsystem can no longer meet the user's business management needs and requires a thorough structural transformation. The main manifestations are as follows:

[0003] There is a lack of classified summary statistics and detailed query of the number of disconnected and undisconnected circuits of various types on the cutover resources.

[0004] There is no unified standard external interface provided, and new interfaces can only be added when users need them.

[0005] When performing cutover query calculations, data must be flipped up layer by layer. The original distributed storage and implementation methods are slow and inefficient.

[0006] The system has many functions, but they are complex or inconvenient for users to view, requiring optimization of the functional structure. Support for a limited variety of transmission resource types is limited: Transmission resources include optical cables, wavelength division multiplexing (WDM), OLP, Optical Carrier Protocol (OCP), TMUX (sub-rate transparent multiplexing), SDH, PDH (Plesiochronous Digital Hierarchy), leased fiber, leased WDM, channels, and customer circuits. Existing cutover conflict detection algorithms often perform calculations for a single system and cannot detect cutover conflicts across multiple resource types.

[0007] Low adaptability to complex scenarios: Transmission resources are diverse and complex across network layers, from underlying optical cables to the various service systems and enabled service circuits. Cutover can occur at any layer, rather than at fixed levels. Incomplete cutover conflict analysis can affect the accuracy of the results. Therefore, cross-layer cutover impact query is required for cutover conflict determination.

[0008] Query efficiency issues: With the development of communication technology, the structure of transmission networks has become increasingly complex. The process of determining whether cutover conflicts with services is also cumbersome, resulting in longer cutover preparation time and thus affecting the rapid formulation of cutover plans. Summary of the Invention

[0009] The present invention addresses the deficiencies in the prior art and provides a method for determining conflicts in a transmission network cutover, which can quickly calculate the upper-layer resources affected by interruptions in lower-layer resources in the transmission network, making cutover scheduling more convenient.

[0010] To achieve the above object, the present invention adopts the following technical solutions:

[0011] A method for determining a transmission network cutover conflict comprises:

[0012] Obtain all resource information in the transmission network;

[0013] Based on the resource information, a recursive query method is used to query the resources carried by each layer in the transmission network to obtain an intermediate table of carrying resources;

[0014] The protection mode of the layer where the network cutover point is located is calculated based on the intermediate table of bearer resources and the dual-end site information to obtain the resource protection set;

[0015] Generate full resource topology data using the intermediate table of resource bearers and resource protection collections;

[0016] Enter the network cutover conditions, determine the type of cutover resources based on the network cutover conditions, and query the affected upper-layer resources from the full resource topology data;

[0017] Determine whether the cutover segment and the affected upper-layer resources are protected and the specific protection method, thereby determining whether the cutover will affect services;

[0018] Determine whether there is a cutover conflict based on the affected upper-layer resources and whether there is a protection scenario.

[0019] To optimize the above technical solutions, specific measures taken also include:

[0020] Furthermore, the specific process of calculating the intermediate table of bearer resources using the recursive query method is as follows:

[0021] Taking the optical cable as the first layer, the recursive query method is used to query the resources carried by the first layer and each layer above;

[0022] Taking the leased fiber as the first layer, the recursive query method is used to query the resources carried by the first layer and each layer above;

[0023] Taking the leased wavelength as the first layer, use the recursive query method to query the resources carried by the first layer and each layer above;

[0024] The resource information carried by each layer is summarized into the intermediate table of carried resources.

[0025] Furthermore, the specific process of calculating the protection mode of the layer where the network cutover point is located based on the intermediate table of bearer resources and the dual-end site information to obtain the resource protection set is as follows:

[0026] If the layer where the network cutover point is located is not protected, the protection mode of the layer is no protection. If the layer where the network cutover point is located is protected, the protection mode is displayed according to whether the protection of this layer is effective. The specific protection mode is related to the resources existing in the layer where the network cutover point is located.

[0027] If the network cutover point is located at the lowest layer and affects the system segment or circuit segment, and the system segment or circuit segment has no protection at this layer, only the protection mode at the lowest layer will be displayed.

[0028] If the system segment or circuit segment is affected by the cutover of the lower layer, and the system segment or circuit segment has protection at this layer, the protection mode of the lowest layer that works is calculated based on the protection of this layer plus the transmission interruption of the lower layer. If neither works, there is no protection.

[0029] Furthermore, the specific process of determining whether the cutover segment and the affected upper-layer resources have protection and the specific protection method, thereby determining whether the cutover affects the service, is as follows:

[0030] During single-point or multi-point cutover, the interruption status of the affected system segment or circuit segment is calculated based on the protection status of the current layer and the transmission interruption status of the underlying layer, including:

[0031] If the current system segment or circuit segment is cut over, the primary or backup route of this segment is considered disconnected, and the interruption status of the affected system segment or circuit segment is calculated based only on the protection status of this layer.

[0032] If the system segment or circuit segment is affected by the cutover of the bottom layer, and the system segment or circuit segment has no protection at this layer, the interruption of the system segment or circuit segment will be displayed only based on the bottom layer transmission;

[0033] If the cutover of the bottom layer affects the system segment or circuit segment, and the system segment or circuit segment is protected at this layer, the interruption status of the affected system segment or circuit segment is calculated based on the protection mode of this layer plus the interruption status of the bottom layer transmission. Specifically, the interruption status of the primary route and the backup route is first calculated based on the bottom layer transmission, and then the interruption status of the system segment or circuit segment is calculated based on the interruption status of the primary route and the backup route of this layer.

[0034] Furthermore, if the layer where the network cutover point is located has no protection, the protection mode of the layer is no protection. If the layer where the network cutover point is located has protection, the specific process of displaying the protection mode according to whether the protection of the layer is effective is as follows:

[0035] If the cut point is an optical cable, leased optical fiber, or leased wavelength, the layer where the cut point is located has no protection, and the cut is displayed as interrupted, with the protection mode being no protection.

[0036] If the layer where the cutover point is located has OLP, the layer is protected and the underlying layer is not forwarded. The protection mode of the layer is calculated as follows:

[0037] For the OLP of the automatic optical switch, if the main route is disconnected, it will display Momentary disconnection, and the protection mode will display Automatic optical switch OLP. If the backup route is disconnected, it will display Not disconnected, and the protection mode will display No protection. If both the main route and the backup route are disconnected, it will display Interruption, and the protection mode will display No protection.

[0038] If the layer where the cutover point is located has a WDM system and if there is no 1+1 protection, only the bottom layer will be used for transmission. If it is interrupted, there is no protection. If it is not interrupted, the protection mode of the bottom layer will be displayed, and it will be shown whether it is the main route or the backup route. If there is 1+1 protection, the current layer has protection, and the protection mode of this layer will be calculated based on the current layer plus the bottom layer transmission. If the main route or the backup route is affected but not interrupted, the protection mode of the bottom layer will be displayed. If the main route or the backup route is affected and causes a momentary interruption, the bottom layer protection mode will be displayed. If one of the main route or the backup route is interrupted, there is no interruption and WDM 1+1 protection will be displayed. If both the main route and the backup route are affected and both are interrupted, then they are interrupted and 1+1 protection will be displayed.

[0039] If the layer where the cutover point is located has OCP, then the layer is protected. The protection mode of the layer is calculated by adding the layer to the bottom layer. Specifically:

[0040] For the OCP of the automatic optical switch, if the main route is disconnected, it will display "instantaneous disconnection" and the protection mode will display "automatic optical switch OCP"; if the backup route is disconnected, it will display "not disconnected" and the protection mode will display "no protection"; if both the main route and the backup route are disconnected, it will display "interrupted" and the protection mode will display "no protection";

[0041] For the OCP of a manual optical switch, if the main route is disconnected, it will display "interrupted" and the protection mode will display "no protection"; if the backup route is disconnected, it will display "not disconnected" and the protection mode will display "no protection"; if both the main route and the backup route are disconnected, it will display "interrupted" and the protection mode will display "no protection";

[0042] If the layer where the cutover point is located has TMUX, then this layer has no protection and only the underlying protection method is transmitted;

[0043] If the layer where the cutover point is located has SDH, there is 1+1 protection for the SDH linear layer. The protection mode of this layer is calculated by adding the protection of this layer and whether the underlying transmission is interrupted. If there is no protection for the SDH linear layer, the protection mode of this layer is calculated only based on the underlying transmission method. For SDH rings, if a segment of the SDH ring is cutover, or if the underlying layer of the affected SDH ring segment has no protection, the SDH segment itself is displayed as interrupted, and the protection mode is SDH ring protection.

[0044] Furthermore, judging whether there is a conflict in the cutover based on the affected upper layer resources and whether there is a protection scenario is specifically as follows:

[0045] If two directions of the transmission network are interrupted, it is determined that there is a conflict in the remote transmission network;

[0046] If the ratio of the number of affected customer circuits in the cutover circuit group to which the customer circuit belongs to and the number of circuits in the cutover circuit group exceeds the specified lower limit of availability, the affected customer circuit is determined to have a cutover circuit group conflict.

[0047] The beneficial effects of the present invention are:

[0048] The present invention can quickly calculate the upper layer resources affected by the interruption of lower layer resources in the transmission network, making cutover scheduling more convenient; and can realize the cutover conflict judgment of multiple resource types. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is an overall flow chart of the transmission network cutover conflict determination method proposed by the present invention;

[0050] Figure 2 is a schematic diagram of two interruptions in an SDH ring;

[0051] FIG3 is a schematic diagram of three-segment interruption in an SDH ring;

[0052] Figure 4 is a diagram showing the relationship between data bearer transmission;

[0053] Figure 5 is a data bearer transmission topology diagram. DETAILED DESCRIPTION

[0054] The present invention will now be described in further detail with reference to the accompanying drawings.

[0055] The present invention proposes a method for determining conflicts in a transmission network cutover. The overall process of the method is shown in FIG1 , and includes:

[0056] Obtain all resource information in the transmission network; resource information includes cables, leased optical fibers, DWDM, leased wavelengths, OCP (Optical Carrier Protocol), TMUX (Sub-rate Transparent Multiplexing), SDH, PDH (Plesiochronous Digital Hierarchy), and circuits, which is used for subsequent transmission network cutover conflict judgment.

[0057] Based on the resource information, a recursive query method is used to query the resources carried by each layer in the transmission network to obtain the intermediate table of bearer resources. The specific process is as follows:

[0058] Taking the optical cable as the first layer, the recursive query method is used to query the resources carried by the first layer and each layer above;

[0059] Taking the leased fiber as the first layer, the recursive query method is used to query the resources carried by the first layer and each layer above;

[0060] Taking the leased wavelength as the first layer, use the recursive query method to query the resources carried by the first layer and each layer above;

[0061] The resource information carried by each layer is summarized into the intermediate table of carried resources.

[0062] Optical cables, leased optical fibers, and leased wavelengths constitute the physical lines of the transmission network, and the optical fibers in the optical cables carry the business functions.

[0063] Scenario 1: When calculating the load from the optical cable, the optical cable segment is Layer 1, the upper layer directly carrying the transmission circuit link is Layer 2, and the transmission circuit link that can continue to carry transmission circuit links by dividing the transmission circuit into time slots is Layer 3...

[0064] Scenario 2: When calculating the load from the optical cable, the optical cable segment is Layer 1, the upper layer carrying the WDM system is Layer 2, and the WDM system's divided channels carrying the transmission circuit links are Layer 3...

[0065] Scenario 3: When calculating the load from the optical cable, the optical cable segment is Layer 1, the upper layer carrying the SDH system is Layer 2, and the transmission circuit link carried by the time slots divided by the SDH system is Layer 3...

[0066] Scenario 4: When calculating the load from the optical cable, the optical cable segment is Layer 1, the upper layer carrying the TMUX system is Layer 2, and the time slots divided by the TMUX system carrying the transmission circuit links are Layer 3...

[0067] The optical cables of the first layer can be replaced with leased optical fibers and leased wavelengths, and each layer can serve as the first layer for resource carrying.

[0068] Finally, the information carried by each layer is summarized into the intermediate table of carrying resources. The recording method is shown in the table below.

[0069] Table 1

[0070] The protection mode of the layer where the network cutover point is located is calculated based on the intermediate table of bearer resources and the dual-end site information to obtain the resource protection set. The specific process is as follows:

[0071] If the layer where the network cutover point is located is unprotected, the protection mode of this layer is no protection. If the layer where the network cutover point is located is protected, the protection mode is displayed based on whether the protection of this layer is effective. The specific protection mode is related to the resources existing in the layer where the network cutover point is located; see the classification description below for details.

[0072] If the network cutover point is located at the lowest layer and affects the system segment or circuit segment, and the system segment or circuit segment has no protection at this layer, only the protection mode at the lowest layer will be displayed.

[0073] If the system segment or circuit segment is affected by the cutover of the lower layer, and the system segment or circuit segment has protection at this layer, the protection mode of the lowest layer that works is calculated based on the protection of this layer plus the transmission interruption of the lower layer. If neither works, there is no protection.

[0074] The protection methods are:

[0075] OLP (automatic optical switch, manual optical switch), OCP (automatic optical switch, manual optical switch), WDM 1+1 protection, SDH ring, SDH 1+1 protection, circuit 1+1 protection.

[0076] Category Description:

[0077] Optical cables, leased optical fibers, and leased wavelengths are not protected at this layer and will be displayed as interrupted during cutover. The protection mode is no protection.

[0078] The current layer of OLP (automatic optical switch, manual optical switch) is protected, and the bottom layer is not transmitted. It is calculated as follows.

[0079] Automatic optical switch: If the main route is disconnected, the display shows instantaneous disconnection, and the protection mode shows OLP (automatic optical switch); if the backup route is disconnected, the display shows not disconnected, and the protection mode shows no protection. If both routes are disconnected, the display shows interrupted, and the protection mode shows no protection.

[0080] Manual optical switch: If the main route is disconnected, it will display "interrupted" and the protection mode will display "no protection". If the backup route is disconnected, it will display "not disconnected" and the protection mode will display "no protection". If both routes are disconnected, it will display "interrupted" and the protection mode will display "no protection".

[0081] WDM: If there is no 1+1 protection, it is only transmitted according to the bottom layer. If it is interrupted, there is no protection. If it is not interrupted, the protection mode of the bottom layer will be displayed, and it will be shown whether it is the main route or the backup route. If there is 1+1 protection, the current layer has protection and the calculation is based on the current layer + bottom layer transmission. If it affects the main or backup but is not interrupted, the protection mode of the bottom layer will be displayed; if it affects the main or backup with a momentary interruption, the bottom layer protection will be displayed; if it affects one of the main or backup and is interrupted, it is not interrupted and WDM 1+1 protection will be displayed; if it affects both the main and backup and is interrupted, it is interrupted and 1+1 protection will be displayed;

[0082] See Table 2 for details.

[0083] Table 2

[0084] OCP (automatic optical switch, manual optical switch): This layer is protected and the calculation is based on this layer + bottom layer transmission, as shown in Table 3.

[0085] Automatic optical switch: If the main route is disconnected, the display shows instantaneous disconnection, and the protection mode shows OCP (automatic optical switch). If the backup route is disconnected, the display shows not disconnected, and the protection mode shows no protection. If both routes are disconnected, the display shows interrupted, and the protection mode shows no protection.

[0086] Table 3

[0087] Manual optical switch: If the main route is disconnected, it will display "interrupted" and the protection mode will display "no protection". If the backup route is disconnected, it will display "not disconnected" and the protection mode will display "no protection". If both routes are disconnected, it will display "interrupted" and the protection mode will display "no protection".

[0088] Table 4

[0089] TMUX: It has no protection itself, and only transmits protection methods at the bottom layer.

[0090] SDH: 1) If the SDH linear system has 1+1 protection and the current layer has protection, the calculation is based on the current layer + the underlying layer. If the SDH linear system has no protection, only the underlying layer is used for transmission. This is the same as WDM 1+1 protection.

[0091] 2) SDH ring:

[0092] If a certain SDH ring segment is cut off or a lower layer SDH ring segment is cut off, resulting in no protection, the SDH segment itself will be displayed as cut off. The protection mode is SDH ring protection.

[0093] If the cutover of the lower layer of the SDH ring affects a certain segment of the SDH ring, causing a momentary disconnection or no disconnection, the protection mode of the lower layer is displayed.

[0094] Multipoint cutover of an SDH ring is calculated only when it carries service circuits.

[0095] Channel: Same wavelength division multiplexing, with or without protection and circuit 1+1 protection.

[0096] Customer circuit: If it is not an A / B-level circuit, only the protection mode transferred from the lower layer is used. If it is an A / B-level circuit, the current layer has protection, and the calculation is based on the current layer + the lower layer transfer. If cutting over an A / B-level customer circuit on the current layer or cutting over the lower layer causes an A / B-level customer circuit on the current layer to be interrupted, the circuit will be displayed with A / B-level circuit protection. If cutting over the lower layer causes an A / B-level customer circuit on the current layer to remain disconnected or to be momentarily disconnected, the protection mode of the lower layer will be displayed.

[0097] Generate full resource topology data using the intermediate table of resource bearers and resource protection collections;

[0098] Enter the network cutover conditions, determine the type of cutover resources based on the network cutover conditions, and query the affected upper-layer resources from the full resource topology data;

[0099] By determining whether the cutover segment and the affected upper-layer resources have protection and the specific protection method, we can determine whether the cutover will affect services. The specific process is as follows:

[0100] When a single-point or multi-point cutover occurs, the interruption of the affected system segment or circuit segment is calculated based on the "protection status of this layer" + "interruption status of the underlying transmission layer". There are several situations:

[0101] If you cut over the current system segment or circuit segment (whether primary or backup), the primary or backup of this segment will be calculated as interrupted. The "interruption condition" is calculated based only on the protection status of this layer.

[0102] If the system or circuit segment is affected by the cutover of the bottom layer, and the system or circuit segment has no protection at this layer, the interruption, non-interruption, and momentary interruption will be displayed based on the bottom layer transmission only.

[0103] If the cutover of the underlying layer affects the system segment or circuit segment, and the system or circuit segment is protected at the current layer, the interruption of the primary and backup routes is calculated based on the underlying layer transmission. The interruption of the system or circuit segment is then calculated based on the interruption of the primary and backup routes at the current layer.

[0104] The specific calculation rules for trunk line, system, and circuit interruptions are as follows:

[0105] Optical cables, leased optical fibers, and leased wavelengths are not protected at this layer and will be displayed as interrupted during cutover.

[0106] The current layer of OLP (automatic optical switch, manual optical switch) is protected and calculated as follows. The bottom layer is not transmitted.

[0107] Automatic optical switch: If the main route is disconnected, it will display as momentary disconnection; if the backup route is disconnected, it will display as not disconnected. If both routes are disconnected, it will display as interrupted.

[0108] Manual optical switch: If the main route is disconnected, the display shows disconnected; if the backup route is disconnected, the display shows not disconnected. If both routes are disconnected, the display shows disconnected.

[0109] WDM: If 1+1 protection is available, the current layer is protected, and interruption is calculated based on the current layer protection + the underlying layer transmission, as shown in Table 5. If 1+1 protection is not available, only the underlying layer transmission is used.

[0110] Table 5

[0111] OCP (automatic optical switch, manual optical switch): This layer has protection. The interruption is calculated based on the protection of this layer + the bottom layer transmission. The situation of automatic optical switch is shown in Table 6, and the situation of manual optical switch is shown in Table 7.

[0112] Table 6

[0113] Table 7

[0114] TMUX: No protection itself, only low-level transmission.

[0115] SDH: If SDH linear transmission has 1+1 protection and the current layer has protection, the calculation is based on the current layer protection plus whether the underlying transmission is interrupted. If SDH linear transmission has no protection, only the underlying transmission is used.

[0116] SDH ring: If a segment of an SDH ring is cut over, or if the affected SDH segment has no underlying protection, the SDH segment itself will be disconnected. The protection mode is SDH ring protection. The service circuits carried on the SDH are calculated according to the following rules:

[0117] SDH 1+1 protection: Same as WDM.

[0118] SDH ring protection (the branch line attribute must be ring and the protection time slot must not be open. If the protection time slot is open, it is considered as unprotected): One-segment disconnection: A single point disconnection or a momentary disconnection is considered as unbroken.

[0119] Two or more segments are shown in Figure 2. In the figure: (a) AB and DE are two segments, then

[0120] AB, AC, AD, BE, CE, and DE are interrupted, but BC, CD, BD, and EA are not interrupted.

[0121] (b) AB and DE are interrupted instantaneously, then

[0122] AB, AC, AD, BE, CE and DE are momentarily interrupted, while BC, CD, BD and EA are not interrupted.

[0123] (c) AB is momentarily interrupted and DE is interrupted, then

[0124] AB, AC, AD, BE, CE and DE are momentarily interrupted, while BC, CD, BD and EA are not interrupted.

[0125] The sections with more than three sections are shown in Figure 3.

[0126] In the figure: AB and CD are interrupted, and EF is interrupted momentarily.

[0127] AB, AC, BD, BE, BF, CD, CE, CF interruption, AD, AE, DF, EF, instantaneous interruption. BC\DE, AF are not broken.

[0128] Circuit 1+1 Protection: 1+1 protection for channels. If the current layer has protection, the calculation is based on the current layer + the bottom layer. If the linear protection is unprotected, only the bottom layer is used for transmission.

[0129] Customer circuit: A / B-level circuit, this layer is protected, and the calculation is based on this layer + bottom layer transmission.

[0130] Determine whether there is a cutover conflict based on the affected upper-layer resources and whether there is a protection scenario.

[0131] Conflict calculation rules:

[0132] Prerequisite: When protection is in place, momentary interruptions are treated as interruptions.

[0133] Momentary disconnection: within 15 minutes

[0134] Interruption: more than 30 minutes

[0135] Is there a conflict between different transmission networks?

[0136] For the four DWDM systems that are built and maintained on behalf of a customer, these four systems constitute three directions between Beijing, Guangzhou, and Shanghai (two systems exist in the Beijing and Guangzhou directions). During the cutover of the backbone and secondary trunk segments, two directions must not be interrupted simultaneously. If only one direction is interrupted, it is considered uninterrupted. Otherwise, if both directions are interrupted, a conflict is considered, and the query results will display "Inter-regional transmission network conflict."

[0137] Whether to cut over circuit group conflicts:

[0138] During "Cutover Impact Conflict Judgment," if the ratio of the number of affected customer circuits in the cutover circuit group to which a customer circuit belongs (deleted, meaning that if the statistics show multiple results, they are only counted once) to the number of circuits in the cutover circuit group exceeds the specified availability lower limit, the affected customer circuit is considered to be in conflict, and the "Cutover Circuit Group Conflict" column displays "Cutover Circuit Group Conflict" in red.

[0139] A circuit may belong to multiple groups, and each group is calculated separately without affecting each other.

[0140] Relationship between cutover time and circuit completion time:

[0141] Based on the circuit's required completion time and the cutover start and end time, determine whether the circuit being scheduled is interrupted. The judgment rules are shown in Table 8:

[0142] Table 8

[0143] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A method for determining a transmission network cutover conflict, characterized in that: include: Obtain all resource information in the transmission network; Based on the resource information, the resources carried by each layer in the transmission network are queried using a recursive query method to obtain an intermediate table of carrying resources; The protection mode of the layer where the network cutover point is located is calculated according to the intermediate table of bearer resources and the information of the dual-end sites to obtain a resource protection collection; Generate full resource topology data using the intermediate table of resource bearers and resource protection collections; Enter the network cutover conditions, determine the type of cutover resources based on the network cutover conditions, and query the affected upper-layer resources from the full amount of resource topology data; By determining whether the cutover segment and the affected upper-layer resources are protected and the specific protection method, it can be determined whether the cutover affects the service; Determine whether there is a conflict in the cutover based on the affected upper-layer resources and whether there is a protection scenario.

2. The method for determining a transmission network cutover conflict according to claim 1, wherein: The specific process of calculating the intermediate table of bearer resources by using the recursive query method is as follows: Taking the optical cable as the first layer, the recursive query method is used to query the resources carried by the first layer and each layer above; Taking the leased optical fiber as the first layer, the recursive query method is used to query the resources carried by the first layer and each layer above; Taking the leased wavelength as the first layer, the recursive query method is used to query the resources carried by the first layer and each layer above; The resource information carried by each layer is summarized into the intermediate table of carried resources.

3. The method for determining a transmission network cutover conflict according to claim 1, wherein: The specific process of calculating the protection mode of the layer where the network cutover point is located according to the intermediate table of bearer resources and the dual-end site information to obtain the resource protection collection is as follows: If the layer where the network cutover point is located is not protected, the protection mode of the layer is no protection. If the layer where the network cutover point is located is protected, the protection mode is displayed according to whether the protection of this layer is effective. The specific protection mode is related to the resources existing in the layer where the network cutover point is located. If the network cutover point is located at the lowest layer and affects the system segment or circuit segment, and the system segment or circuit segment has no protection at this layer, only the protection mode at the lowest layer will be displayed; If the system segment or circuit segment is affected by cutting over the lower layer, and the system segment or circuit segment has protection at this layer, the protection mode at the lowest layer is calculated based on the protection of this layer plus the transmission interruption of the lower layer. If none of them work, there is no protection.

4. The method for determining a transmission network cutover conflict according to claim 1, wherein: The specific process of judging whether the cutover segment and the affected upper layer resources have protection and the specific protection method, thereby judging whether the cutover affects the service is as follows: When a single-point or multi-point cutover is performed, the interruption status of the affected system segment or circuit segment is calculated based on the protection status of the current layer and the interruption status of the underlying layer, including: If the current system segment or circuit segment is cut over, the primary route or backup route of this segment is considered interrupted, and the interruption of the affected system segment or circuit segment is calculated only based on the protection status of this layer; If the system segment or circuit segment is affected by the cutover of the bottom layer, and the system segment or circuit segment has no protection at this layer, the interruption of the system segment or circuit segment will be displayed only according to the bottom layer transmission; If the cutover of the bottom layer affects the system segment or circuit segment, and the system segment or circuit segment is protected at this layer, the interruption status of the affected system segment or circuit segment is calculated based on the protection mode of this layer plus the interruption status of the bottom layer transmission. Specifically, the interruption status of the main route and the backup route is first calculated based on the bottom layer transmission, and then the interruption status of the system segment or circuit segment is calculated based on the interruption status of the main route and the backup route of this layer.

5. The method for determining a transmission network cutover conflict according to claim 3, wherein: If the layer where the network cutover point is located is not protected, the protection mode of the layer is no protection. If the layer where the network cutover point is located is protected, the specific process of displaying the protection mode according to whether the protection of this layer works is as follows: If the cut point is an optical cable, leased optical fiber or leased wavelength, the layer where the cut point is located has no protection, and the cut is displayed as interrupted, and the protection mode is no protection; If the layer where the cutover point is located has OLP, the layer is protected and the bottom layer is not transmitted. The protection mode of the layer is calculated according to the following process: For the OLP of the automatic optical switch, if the main route is disconnected, it will be displayed as instantaneous disconnection, and the protection mode will display automatic optical switch OLP. If the backup route is disconnected, it will be displayed as not disconnected, and the protection mode will display no protection. If both the main route and the backup route are disconnected, it will be displayed as interrupted, and the protection mode will display no protection. If the layer where the cutover point is located has a wavelength division system, and if there is no 1+1 protection, only the bottom layer is used for transmission. If it is interrupted, there is no protection. If it is not interrupted, the protection mode of the bottom layer is displayed, and it is displayed whether the main route or the backup route is affected. If there is 1+1 protection, this layer has protection, and the protection mode of this layer is calculated according to the transmission of this layer plus the bottom layer. If the main route or the backup route is affected but not interrupted, the protection mode of the bottom layer is displayed; if the main route or the backup route is affected and causes a momentary interruption, the bottom layer protection mode is displayed; if one of the main route or the backup route is interrupted, it is not interrupted and wavelength division 1+1 protection is displayed; if both the main route and the backup route are affected and both are interrupted, they are interrupted and 1+1 protection is displayed; If the layer where the cutover point is located has OCP, then this layer has protection. The protection mode of this layer is calculated by adding the transmission mode of this layer to the bottom layer. Specifically: For the OCP of the automatic optical switch, if the main route is disconnected, it will display "momentary disconnection", and the protection mode will display "automatic optical switch OCP"; if the backup route is disconnected, it will display "not disconnected", and the protection mode will display "no protection"; if both the main route and the backup route are disconnected, it will display "interrupted", and the protection mode will display "no protection"; For the OCP of manual optical switch, if the main route is disconnected, it will be displayed as disconnected, and the protection mode will be displayed as no protection; if the backup route is disconnected, it will be displayed as not disconnected, and the protection mode will be displayed as no protection; if both the main route and the backup route are disconnected, it will be displayed as disconnected, and the protection mode will be displayed as no protection; If there is TMUX at the layer where the cutover point is located, this layer has no protection and only the underlying protection mode is transmitted; If there is SDH at the layer where the cutover point is located, there is 1+1 protection for SDH linearity, and the protection mode of this layer is calculated by adding the protection of this layer and whether the bottom layer transmission is interrupted. If there is no protection for SDH linearity, the protection mode of this layer is calculated only by the bottom layer transmission mode. For SDH ring, if a section of the SDH ring is cutover, or a section of the affected SDH ring has no protection in the lower layer, the SDH section itself is displayed as interrupted, and the protection mode is SDH ring protection.

6. The method for determining a transmission network cutover conflict according to claim 1, wherein: The method of determining whether there is a conflict in the cutover according to the affected upper layer resources and whether there is a protection scenario is as follows: If two directions in the transmission network are interrupted, it is determined that there is a conflict in the remote transmission network; If the ratio of the number of affected customer circuits in the cutover circuit group to which the customer circuit belongs to and the number of circuits in the cutover circuit group to which the customer circuit belongs exceeds the specified lower limit of availability, the affected customer circuit is determined to have a cutover circuit group conflict.

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