A method for determining conflict in transmission network cutover

Abstract

The present invention discloses a transmission network cutover conflict judgment method, comprising: obtaining all resource information in the transmission network; based on the resource information, querying the resources carried by each layer in the transmission network by a recursive query method to obtain a bearer resource intermediate table; calculating the protection mode of the layer where the network cutover point is located according to the bearer resource intermediate table and the dual-end site information to obtain a resource protection collection; generating a full amount of resource topology data by using the bearer resource intermediate table and the resource protection collection; inputting network cutover conditions, judging the type of cutover resources according to the network cutover conditions, and querying the affected upper-layer resources from the full amount of resource topology data; judging whether the cutover segment and the affected upper-layer resources have protection and specific protection methods, thereby judging whether the cutover affects the service; judging whether the cutover has a conflict according to the affected upper-layer resources and whether there is a protection scenario. The present invention realizes the cutover conflict judgment of multiple resource types.

Description

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 trunks, provincial secondary trunks, 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 the group collects the cutover applications from various provinces, it determines whether there is a conflict. If there is a conflict, it adjusts the cutover plan to eliminate the conflict, and then queries the affected circuits based on the cutover plan and notifies the customer. With the growth of business volume over the years, the diversification of user needs, and the group's requirements for unified control of long-distance resource system data, the current cutover query subsystem can no longer meet user business management needs and requires a thorough structural transformation. The main manifestations are as follows:

[0003] Lack of flat display of various types of circuit interruptions and uninterrupted numbers on cutover resources, classified summary statistics and detailed query

[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 turned up layer by layer. The original distributed storage and implementation methods are slow and inefficient.

[0006] There are many functions, but they are too complicated or inconvenient for users to view. The display of the functional structure needs to be re-optimized. Insufficient types of supported transmission resources: Transmission resources include optical cables, wavelength division, OLP, OCP (Optical Carrier Protocol), TMUX (sub-rate transparent multiplexing), SDH, PDH (Plesiochronous Digital Hierarch y ), leased optical fiber, leased wavelength division, channels, customer circuits and other resources. The existing cutover conflict judgment algorithms often calculate for a single system and cannot realize the cutover conflict judgment of multiple resource types.

[0007] The adaptability to complex scenarios is not high: transmission resources are not only numerous in types but also complex in network layers. From the underlying optical cable to the various service systems carried and the opened service circuits. Cutover may occur at any level, rather than at all levels of the fixed level. Incomplete analysis of cutover conflict judgment will affect the accuracy of the analysis results. Therefore, cross-level cutover impact query is required for cutover conflict judgment.

[0008] Query efficiency issues: With the development of communication technology, the structure of the transmission network has become more complex. The process of judging the conflict between cutover and business is also cumbersome, which leads to longer preparation time for cutover, thus affecting the rapid formulation of cutover plan. Summary of the invention

[0009] The present invention aims at 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 the interruption of the lower layer resources in the transmission network, making the 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, comprising:

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

[0013] 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;

[0014] 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;

[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 amount of resource topology data;

[0017] 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;

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

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

[0020] Furthermore, the specific process of calculating the intermediate table of bearer resources by 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 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;

[0023] 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;

[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 according to the intermediate table of bearer resources and the dual-end site information to obtain the resource protection collection is:

[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 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.

[0029] Furthermore, 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:

[0030] 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:

[0031] 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;

[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 according to 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 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.

[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 this layer works 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, and the protection mode is no protection;

[0036] 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:

[0037] 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.

[0038] 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;

[0039] 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:

[0040] 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";

[0041] 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;

[0042] 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;

[0043] 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.

[0044] Further, judging whether there is a conflict in the cutover according to the affected upper layer resources and whether there is a protection scenario is specifically:

[0045] If two directions in 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 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.

[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 the lower layer resources in the transmission network, making the cutover scheduling more convenient; and can realize the cutover conflict judgment of multiple resource types. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is an overall flow chart of the transmission network cutover conflict judgment method proposed by the present invention;

[0050] Figure 2 It is a schematic diagram of two-segment interruption in an SDH ring;

[0051] Figure 3 It is a schematic diagram of three-segment interruption in an SDH ring;

[0052] Figure 4 Transmitting relationship diagram for data bearing;

[0053] Figure 5 Provides a topology diagram for data bearer transmission. 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 transmission network cutover. The overall process of the method is as follows: Figure 1 As shown, including:

[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 are used for subsequent transmission network cutover conflict judgment.

[0057] Based on the resource information, the recursive query method is used to query the resources carried by each layer in the transmission network to obtain the intermediate table of carrying 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 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;

[0060] 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;

[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 business functions.

[0063] Scenario 1: When calculating the load from the optical cable, the optical cable section is the first layer, the upper layer directly carries the transmission circuit link is the second layer, and the transmission circuit can continue to carry the transmission circuit link by dividing the time slot is the third layer...

[0064] Scenario 2: When calculating the load from the optical cable, the optical cable section is the first layer, the upper layer carries the wavelength division system is the second layer, and the wavelength division system divides the channels to carry the transmission circuit link is the third layer...

[0065] Scenario 3: When calculating the load from the optical cable, the optical cable section is the first layer, the upper layer carrying the SDH system is the second layer, and the time slots divided by the SDH system carrying the transmission circuit link is the third layer...

[0066] Scenario 4: When calculating the load from the optical cable, the optical cable section is the first layer, the upper layer carrying the TMUX system is the second layer, and the time slots divided by the TMUX system carrying the transmission circuit link is the third layer...

[0067] The optical cables of the first layer can be replaced by leased optical fibers and leased wavelengths, and each layer can be used as the first layer to carry resources.

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

[0069] Table 1

[0070] Cable segment Leased Fiber Leased wavelength WDM System Segment OCP TMUX Segment SDH segment Circuit segment system Number of layers opt_seg_1 opt_1 0 opt_seg_1 dwdm_seg_1 dwdm_1 1 opt_seg_1 bc_seg_1 bc_1 2

[0071] 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 collection; the specific process is as follows:

[0072] 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. See the classification description below for details.

[0073] 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;

[0074] 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.

[0075] The protection methods are:

[0076] 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.

[0077] Category Description:

[0078] Optical cable, leased optical fiber, leased wavelength, this layer has no protection, it will be displayed as interrupted during cutover, and the protection mode is no protection.

[0079] The current layer of OLP (automatic optical switch, manual optical switch) is protected, and the bottom layer is not transmitted, and is calculated as follows.

[0080] Automatic optical switch: If the main route is disconnected, it will display "instantaneous disconnection" and the protection mode will display "OLP (automatic optical switch)"; 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] 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".

[0082] WDM: If there is no 1+1 protection, it will only be 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 displayed whether it is the main route or the backup route. If there is 1+1 protection, there is protection in this layer, and it will be calculated according to this layer + bottom layer transmission. If it affects the main or backup, but it is not interrupted, the protection 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 interruptions, it is not interrupted and WDM 1+1 protection will be displayed; if it affects both the main and backup interruptions, it is interrupted and 1+1 protection will be displayed;

[0083] See Table 2 for details.

[0084] Table 2

[0085]

[0086] 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.

[0087] Automatic light switch:

[0088] If the main route is disconnected, it will display "instantaneous disconnection" and the protection mode will display "OCP (automatic optical switch)"; 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".

[0089] Table 3

[0090]

[0091] 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".

[0092] Table 4

[0093]

[0094] TMUX: It has no protection itself, it only transmits protection methods at the bottom level.

[0095] SDH: 1) SDH linear has 1+1 protection, and the current layer has protection, and the calculation is based on the current layer + the bottom layer. If the SDH linear is not protected, it is only transferred according to the bottom layer. Same as WDM 1+1 protection.

[0096] 2) SDH ring:

[0097] If a certain section of the SDH ring is cut off, or a certain section of the SDH ring affected by the cut off of the lower layer causes an interruption without protection, the SDH section itself will be displayed as interrupted. The protection mode is SDH ring protection.

[0098] If the cutover of the lower layer of the SDH ring affects a certain section of the SDH ring, resulting in a momentary disconnection or no disconnection, the protection mode of the lower layer is displayed.

[0099] The multipoint cutover of the SDH ring is calculated only when it carries service circuits.

[0100] Channel: Same wavelength division, with or without protection and circuit 1+1 protection.

[0101] Customer circuit: If it is not an A / B-level circuit, only the protection mode transferred from the lower layer will be 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 a Class A / B customer circuit of the current layer is cut off or a Class A / B customer circuit of the current layer is interrupted due to the cutoff of the lower layer, it will be displayed that there is A / B-level circuit protection; if the cutoff of the lower layer affects the A / B customer circuit of the current layer to remain intact or to be disconnected momentarily, the protection mode of the lower layer will be displayed.

[0102] Generate full resource topology data using the intermediate table of resource bearers and resource protection collections;

[0103] 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;

[0104] By determining whether the cutover segment and the affected upper-layer resources are protected and the specific protection method, it is determined whether the cutover affects the service. The specific process is as follows:

[0105] When a single-point or multi-point cutover is performed, the interruption of the affected system segment or circuit segment is calculated based on the "protection situation of this layer" + "interruption situation of the underlying transmission". There are the following situations:

[0106] If the current system segment or current circuit segment (whether primary or backup) is cut over, the primary or backup of this segment will be calculated as interrupted. The "interruption situation" is only included in the calculation based on the protection situation of this layer.

[0107] If the system segment 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 only according to the bottom layer transmission;

[0108] If the cutover of the bottom layer affects the system segment or circuit segment, and the system or circuit segment is protected at this layer, the interruption of the primary and backup routes is calculated based on the bottom layer transmission according to the "this layer protection + bottom layer transmission interruption". Then the interruption of the system or circuit segment is calculated based on the interruption of the primary and backup routes at this layer.

[0109] The specific calculation rules for trunk line, system and circuit interruption are as follows:

[0110] Optical cables, leased optical fibers, and leased wavelengths are not protected at this layer and will be displayed as interrupted during cutover.

[0111] The current layer of OLP (automatic optical switch, manual optical switch) is protected and calculated as follows. The bottom layer is not transmitted.

[0112] Automatic optical switch: If the main route is disconnected, it will display momentary disconnection; if the backup route is disconnected, it will display not disconnected. If both routes are disconnected, it will display interrupted.

[0113] Manual optical switch: If the main route is disconnected, it will display disconnected; if the backup route is disconnected, it will display not disconnected. If both routes are disconnected, it will display disconnected.

[0114] WDM: If there is 1+1 protection, the current layer is protected, and the interruption is calculated based on the current layer protection + the bottom layer transmission, as shown in Table 5. If there is no 1+1, only the bottom layer transmission is used.

[0115] Table 5

[0116]

[0117] 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.

[0118] Table 6

[0119]

[0120] Table 7

[0121]

[0122] TMUX: No protection itself, only low-level transmission.

[0123] SDH:

[0124] SDH linear has 1+1 protection, if the current layer has protection, the calculation is based on the current layer protection + whether the bottom layer transmission is interrupted. If SDH linear has no protection, it is calculated based on the bottom layer transmission only.

[0125] SDH ring: If a certain section of the SDH ring is cut off, or the lower layer of the affected SDH ring section is not protected, the SDH section itself will be displayed as interrupted. The protection mode is SDH ring protection. The service circuit carried on the SDH is calculated according to the following rules:

[0126] SDH1+1 protection: Same as WDM.

[0127] SDH ring protection (the branch line attribute must be ring-shaped and the protection time slot must not be open. If the protection time slot is open, it is considered as unprotected): One-segment break: A single point break or a momentary break is considered unbroken.

[0128] Two or more sections Figure 2In the figure: (a) AB and DE are two interruptions, then

[0129] AB, AC, AD, BE, CE, and DE are interrupted, but BC, CD, BD, and EA are not interrupted.

[0130] (b) AB and DE are interrupted instantaneously, then

[0131] AB, AC, AD, BE, CE and DE are momentarily interrupted, while BC, CD, BD and EA are not interrupted.

[0132] (c) AB is momentarily disconnected and DE is interrupted, then

[0133] AB, AC, AD, BE, CE and DE are momentarily interrupted, while BC, CD, BD and EA are not interrupted.

[0134] More than three sections Figure 3 .

[0135] In the figure: AB and CD are interrupted, and EF is interrupted momentarily.

[0136] AB, AC, BD, BE, BF, CD, CE, CF interruption, AD, AE, DF, EF, instantaneous interruption. BC\DE, AF are not broken.

[0137] Circuit 1+1 protection: 1+1 protection of the channel. If the current layer has protection, the calculation is based on the current layer + the bottom layer. If it is linear without protection, it is only based on the bottom layer.

[0138] Customer circuit: A / B level circuit, this layer is protected, and the calculation is based on this layer + bottom layer transmission.

[0139] Determine whether there is a conflict in the cutover based on the affected upper-layer resources and whether there is a protection scenario.

[0140] Conflict calculation rules:

[0141] Premise: When protection is in place, momentary outages are treated as interruptions.

[0142] Momentary disconnection: within 15 minutes

[0143] Interruption: more than 30 minutes

[0144] Whether there is conflict between remote transmission networks:

[0145] For the four DWDM systems that are built and maintained on behalf of others, the four systems constitute three directions between Beijing, Guangzhou and Shanghai (there are two systems in the Beijing and Guangzhou directions). During the cutover, the backbone and secondary trunk sections are not allowed to be interrupted in two directions at the same time. If only one direction is interrupted, it is considered that this direction is not interrupted. Otherwise, if both directions are interrupted, it is considered that there is a conflict, and the query result shows "Conflict in the remote transmission network"

[0146] Whether to cut over the circuit group conflict:

[0147] During "Cutover Impact Conflict Judgment", if the ratio of the number of affected customer circuits in the cutover circuit group to which the customer circuit belongs (de-duplicated, meaning that if the statistical results show multiple times, they are only counted once) to 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 judged to be in conflict, and the "Cutover Circuit Group Conflict" column displays "Cutover Circuit Group Conflict" in red.

[0148] A circuit may belong to multiple groups, and each group is calculated separately without affecting each other.

[0149] Relationship between cutover time and circuit completion time:

[0150] According to the required completion time of the circuit and the start and end time of the cutover, determine whether the circuit being scheduled is interrupted. The judgment rules are shown in Table 8: Table 8

[0151]

[0152]

[0153] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope 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 dual-end site information to obtain a resource protection collection; 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: 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 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 is effective 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 certain section of the SDH ring is cutover, or a certain section of the affected SDH ring has no protection at the bottom layer, the SDH section itself is displayed as interrupted, and the protection mode is SDH ring protection. 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 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 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. 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 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.

4. 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.

Images