CN109245968B - Method for formulating error code index of international traditional bandwidth type service delivery test - Google Patents
Method for formulating error code index of international traditional bandwidth type service delivery test Download PDFInfo
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Abstract
The invention provides a method for making an error code index of international traditional bandwidth type service delivery test, which is applied to a model of a whole end-to-end 27500km hypothetical reference channel, wherein the model comprises two channel end points and a plurality of interface end points, and the two channel end points are respectively arranged at two ends of the model; includes step S1, initializing the model; step S2, determining the network type of the model; step S3, determining the error code performance standard of the bearable service according to the network type; and step S4, combining the error code performance standard and the preset availability ratio with a distribution strategy to obtain an error code index according to the model. The invention has the advantages that different ports of the channel are distributed according to the distribution strategy, thereby improving the difference of error code test and improving the error code test efficiency of long channel lines; the network where the channel is located is distinguished, and error code testing is carried out by combining with the corresponding error code performance standard, so that the error code testing efficiency in a complex network is improved; thereby reducing the testing cost.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method for formulating an error code index of an international traditional bandwidth type service delivery test.
Background
The standard of the error code test of the present digital rental circuit is that the error code rate is less than or equal to 10-7 and the error code second is less than 6/2 hours. However, the existing test standards are difficult to meet. Firstly, the existing test standards are more general, the time length of the test and the bandwidth of the service are not considered, and the situation that extreme conditions are met cannot be self-rounded. Secondly, the existing test standards are professional, and common users are difficult to understand, so that communication between users is complicated. Most importantly, the existing test standard has a single form, and inconvenience is brought to the operation of a tester. At present, in order to avoid causing complaints of users, the standard of delivering users is to test error-free codes according to 24-hour error codes, but because the line distance of international private lines is long, the network condition is complex, the probability of error codes and faults is high, users can be delivered according to 24-hour error codes only by bumping fortune, the requirement of error codes can be met by testing for many times, the efficiency is low, manpower and material resources are wasted, the perception of users is poor, even the users can not be delivered on time, and the conditions of paying off and returning bills are caused.
Disclosure of Invention
Aiming at the problems in the prior art, the method aims at distributing different ports of a channel according to a distribution strategy, so that the difference of error code tests is improved, and the error code test efficiency of a long channel route is improved; the network where the channel is located is distinguished, and error code testing is carried out by combining with the corresponding error code performance standard, so that the error code testing efficiency in a complex network is improved; and further reduce the test cost and make the error code index of international traditional bandwidth type service delivery test.
The specific technical scheme is as follows:
a method for making the error code index of international traditional bandwidth type service delivery test, apply to end-to-end 27500km in the whole course and assume the model of the reference channel, the model includes two channel end points and multiple interface end points, two channel end points are set up in both ends of the model respectively;
the method comprises the following steps:
step S1, initializing the model;
step S2, determining the network type of the model;
step S3, determining the error code performance standard of the bearable service according to the network type;
and step S4, combining the error code performance standard and the preset availability ratio with a distribution strategy to obtain an error code index according to the model.
Preferably, the method for formulating the error code index of the international traditional bandwidth type service delivery test is characterized in that the error code index is calculated according to the following formula: (17.5% + 17.5% + 1% + 1% + 2% × (N-2) + L/500 × 1%) x a × B × (1-C) × 86400;
wherein 17.5% is the allocation policy of each channel endpoint;
1% is the allocation policy of each interface endpoint adjacent to a channel endpoint;
2% is the allocation policy of each interface endpoint that is not adjacent to a channel endpoint;
s is used for representing an error code index;
n is used for representing the number of the interface endpoints, and when the number of the interface endpoints is more than 6, the number of the interface endpoints is set to be 6;
l is used for representing the routing length of two channel end points;
a is used for representing the background block error ratio of each rate in the error code performance standard;
b is used for representing each rate block/second value in the error code performance standard;
c is used to represent a preset availability.
Preferably, the method for formulating the error index of the international legacy bandwidth-based service delivery test, wherein step S1 includes setting the severe error rate of the model to zero.
Preferably, the method for formulating the error index of the international legacy bandwidth type service delivery test, wherein the network type in step S2 includes a synchronous digital network and an optical transport network.
Preferably, the method for formulating the error index of the international legacy bandwidth type service delivery test, wherein the error performance standard of the synchronous digital network comprises a first standard and a second standard, wherein the parameter of the second standard comprises the parameter of the first standard.
Preferably, the method for formulating the error code index of the international traditional bandwidth type service delivery test is provided, wherein the error code performance standard of the optical transmission network is the third standard.
Preferably, the method for formulating the error code index of the international traditional bandwidth type service delivery test is provided, wherein the preset availability is the service availability promised by the service standard.
Preferably, the method for formulating the error index of the international conventional bandwidth-type service delivery test, wherein the allocation policy of step S4 includes the following steps:
step A1, dividing the route length of the model into a first part and a second part, wherein the first part comprises the route length of each channel end point and the interface end point adjacent to the channel end point;
step a2, calculating the allocation policy of the first part according to the following formula:
s1 ═ 17.5% + 17.5% + L1/500 × 1%; and the number of the first and second groups,
the allocation strategy of the second part is calculated according to the following formula:
S1＝1％+1％+2％×(N-2)+L2/500×1％；
step A3, combining the allocation strategies of the first part and the second part to obtain an allocation strategy;
wherein L1 is used to indicate the route length of the first part;
l2 is used to indicate the route length of the second part.
Preferably, the method for formulating the error index of the international traditional bandwidth service delivery test is that, when the interface endpoint not adjacent to the channel endpoint is a submarine cable, the allocation policy of the interface endpoint not adjacent to the channel endpoint is set to 1%.
The technical scheme has the following advantages or beneficial effects: different ports of the channel are distributed according to the distribution strategy, so that the difference of error code testing is improved, and the error code testing efficiency of a long channel route is improved; the network where the channel is located is distinguished, and error code testing is carried out by combining with the corresponding error code performance standard, so that the error code testing efficiency in a complex network is improved; thereby reducing the testing cost.
Drawings
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and are not restrictive of the scope of the invention.
FIG. 1 is a flow chart of a method for formulating an error code index of an international legacy bandwidth-type service delivery test according to the present invention;
fig. 2 is a flowchart of an allocation strategy of the method for formulating an error index for an international legacy bandwidth-based service delivery test according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The invention provides a method for making an error code index of international traditional bandwidth type service delivery test, which is applied to a model of a whole end-to-end 27500km hypothetical reference channel, wherein the model comprises two channel end points and a plurality of interface end points, and the two channel end points are respectively arranged at two ends of the model;
as shown in fig. 1, the method comprises the following steps:
step S1, initializing the model;
step S2, determining the network type of the model;
step S3, determining the error code performance standard of the bearable service according to the network type;
step S4, combining the error code performance standard and the preset availability ratio with a distribution strategy and calculating according to the model and the following formula to obtain an error code index;
S＝(17.5％+17.5％+1％+1％+2％×(N-2)+L/500×1％)×A×B×(1-C)×86400；
17.5% allocation policy for each channel endpoint;
1% is the allocation policy of each interface endpoint adjacent to a channel endpoint;
2% is the allocation policy of each interface endpoint that is not adjacent to a channel endpoint;
s is used for representing an error code index;
n is used for representing the number of the interface endpoints, and when the number of the interface endpoints is more than 6, the number of the interface endpoints is set to be 6;
l is used for representing the routing length of two channel end points;
a is used for representing the background block error ratio of each rate in the error code performance standard;
b is used for representing each rate block/second value in the error code performance standard;
c is used to represent a preset availability.
Furthermore, as a preferred embodiment, the channel type of the model is determined after the network type of the model is determined, and the error code test can be conveniently carried out by combining the corresponding error code performance standard by distinguishing the network type and the channel type, so that the error code test efficiency in a complex network is improved, and the test human resources and material resources are reduced; in the overlong and complicated channel route, the classification value is set for each port through the classification strategy to simplify the whole channel route, so that the difference of error code tests is improved, the error code test efficiency of the long channel route is improved, and the test manpower resource and material resource resources are reduced.
Further, as a preferred embodiment, the calculation of the route length includes a plurality of cases;
the first condition is as follows: when the tester cannot clearly know the actual routing lengths of the two channel end points, the air routing length can be obtained through calculation, then the air routing length is multiplied by the corresponding routing coefficient, the obtained routing length can be calculated as the actual routing length of the two channel end points, and the obtained routing length is the maximum value of the multiple closest to 500km through the method, namely the routing length at the moment is adjusted to be closest to 500km (only in a case of not cutting), for example, when the routing length obtained through calculation by using the method is 3100km, the routing length is adjusted to 3500km, namely the routing length at the moment is 3500 km; for example, when the calculated route length is 2900km by using the method, the route length can be adjusted to 3000km, namely the route length is 2900 km;
wherein, the routing coefficients are shown in the following table 1,
TABLE 1
In table 1 above, the spatial routing length may be set to d, and when the spatial routing length is less than 1000km, the routing coefficient is 1.5, and the routing length at this time is the maximum value of the multiple closest to 500km obtained by 1.5 d; when the spatial routing length is greater than or equal to 1000km and less than 1200km, the routing length at the moment is 1500 km; when the spatial routing length is greater than or equal to 1200km, the routing coefficient is 1.25 at this time, and the routing length at this time is 1.25d, which results in the maximum value of the multiple closest to 500 km.
Case two: when the tester already knows the actual routing lengths of the two channel endpoints, the actual routing lengths of the two channel endpoints can be directly substituted into a formula for calculation, wherein the actual routing lengths are calculated by the following companies:
L＝E×F；
e is used for representing the loopback delay second;
f for 100 km/s;
case three: when the tester knows the actual routing lengths of the two channel end points and also knows the routing length obtained by multiplying the routing length in the air by the corresponding routing coefficient, the two routing lengths are compared, and the smaller value is selected as the routing length which can be substituted into the formula.
Further, in the above embodiment, step S1 includes setting the severe error rate (SESR-switched corrected Ratio) of the model to zero, which is more convenient for practical operation.
Further, in the above-described embodiment, the network types in step S2 include the synchronous digital network and the optical transmission network.
Further, in the above embodiment, the error performance criteria of the synchronous digital network includes a first criterion and a second criterion, wherein the parameters of the second criterion include the parameters of the first criterion.
The first standard is ITU-T G.826 full-range end-to-end 27500km Hypothetical Reference channel (HRP-advanced Reference Path), as shown in Table 2 below.
TABLE 2
The second standard is ITU-T G.828 full end-to-end 27500km assuming error performance specification for the reference channel (HRP) as shown in Table 3 below.
TABLE 3
It should be noted that the bit rate indicators of the first standard and the second standard are different, wherein the error performance specification of the first standard, ITU-T g.826 whole end-to-end 27500km hypothetical reference channel (HRP), is applicable to a bit rate of 1.5 Mb/s.
Further, in the above embodiment, the error performance criterion of the optical transmission network is the third criterion.
The third standard is an error code performance specification of an ITU-T g.8201 full end-to-end 27500km hypothetical reference channel (HRP), that is, an end-to-end error performance indicator of an ITU-T g.8201-27500km international synchronous digital ODUk (Optical channel data unit) HRP, as shown in table 4 below.
TABLE 4
The bber (background Block Error ratio) is used to represent the background Block Error ratio.
Further, in the above embodiment, the preset availability rate is a Service availability rate of a Service standard commitment (SLA-Service-Level agent), where the availability rate may be 99.9%, 99%, and 95%, and certainly is not limited to the above three.
Further, in the above embodiment, as shown in fig. 2, the allocation policy of step S4 includes the following steps:
step A1, dividing the route length of the model into a first part and a second part, wherein the first part comprises the route length of each channel end point and the interface end point adjacent to the channel end point;
step a2, calculating the allocation policy of the first part according to the following formula:
s1 ═ 17.5% + 17.5% + L1/500 × 1%; and the number of the first and second groups,
the allocation strategy of the second part is calculated according to the following formula:
S1＝1％+1％+2％×(N-2)+L2/500×1％；
step A3, combining the allocation strategies of the first part and the second part to obtain an allocation strategy;
l1 is used to indicate the route length of the first part;
l2 is used to indicate the route length of the second part.
The allocation strategy adopts a method of combining complexity allocation and distance allocation.
Further, in the above embodiment, when the interface endpoint not adjacent to the channel endpoint is the submarine cable, the allocation policy of the interface endpoint not adjacent to the channel endpoint is set to 1%.
Further, as a preferred embodiment, the first part is an intra-national part and the second part is an international part.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A method for making the error code index of international traditional bandwidth type service delivery test, apply to end-to-end 27500km in the whole and assume the model of the reference channel, the said model includes two channel end points and multiple interface end points, two said channel end points are set up in both ends of the said model respectively;
the method is characterized by comprising the following steps:
step S1, initializing the model;
step S2, determining the network type of the model;
step S3, determining the error code performance standard of the bearable service according to the network type;
step S4, combining an error code performance standard and a preset availability ratio with a distribution strategy to obtain an error code index according to the model calculation;
the error code index is calculated according to the following formula:
S＝(17.5％+17.5％+1％+1％+2％×(N-2)+L/500×1％)×A×B×(1-C)×86400；
wherein 17.5% is the allocation policy of each of the channel endpoints;
1% of the allocation policy for each of the interface endpoints adjacent to the channel endpoint;
2% of the allocation policy for each of the interface endpoints that are not adjacent to the channel endpoint;
s is used for representing an error code index;
n is used for representing the number of the interface endpoints, and when the number of the interface endpoints is more than 6, the number of the interface endpoints is set to be 6;
l is used for representing the route length of two channel end points;
a is used for representing the background error block ratio of each rate in the error performance standard;
b is used for representing each rate block/second value in the error performance standard;
and C is used for representing the preset availability.
2. The method for formulating an error indicator for international legacy bandwidth-based service delivery test as claimed in claim 1, wherein said step S1 includes setting a severe error rate of said model to zero.
3. The method for formulating an error indicator for international legacy bandwidth-based service delivery test as claimed in claim 1, wherein said network types in said step S2 include a synchronous digital network and an optical transport network.
4. The method for formulating an error indicator for international legacy bandwidth service delivery test as claimed in claim 3, wherein the error performance criteria of the synchronous digital network comprises a first criterion and a second criterion, wherein the parameters of the second criterion comprise parameters of the first criterion.
5. The method for formulating an error indicator for international legacy bandwidth service delivery test as claimed in claim 3, wherein the error performance criteria of the optical transmission network is a third criteria.
6. The method for formulating an error indicator for international legacy bandwidth service delivery test as claimed in claim 1, wherein said predetermined availability is a service availability promised by a service standard.
7. The method for formulating an error indicator for international legacy bandwidth-based service delivery test as claimed in claim 1, wherein said allocation policy of said step S4 comprises the steps of:
a step a1 of dividing the routing length of the model into a first part and a second part, the first part including the routing length of each of the path end points and the interface end points adjacent to the path end point;
step a2, calculating the allocation policy of the first part according to the following formula:
s1 ═ 17.5% + 17.5% + L1/500 × 1%; and the number of the first and second groups,
calculating the distribution strategy of the second part according to the following formula:
S1＝1％+1％+2％×(N-2)+L2/500×1％；
step A3, combining the allocation strategies of the first part and the second part to obtain the allocation strategy;
wherein L1 is used to represent the route length of the first part;
l2 is used to indicate the route length of the second part.
8. The method for formulating an error indicator for international legacy bandwidth service delivery test as claimed in claim 7, wherein when the interface endpoint not adjacent to the channel endpoint is a submarine cable, the allocation policy of the interface endpoint not adjacent to the channel endpoint is set to 1%.
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