CN101945414B - Equipment capacity extracting and determining method based on local area network - Google Patents

Abstract

The invention discloses an equipment capacity extracting and determining method based on a local area network, which is characterized by comprising the following steps of: firstly, determining and setting an index for measuring a local area network calling model; then setting an equipment index; and determining the carrying capability of a switch in the local area network. Because the difference of the calling model of the same local area network is smaller, the invention sets that data acquisition is carried out according to the local area network instead of the switch, not only can solve the problem of inaccurate equipment capacity index caused by uniformly extracting and determining the calling model but also can more favorably save investment and the operation and maintenance cost and simplify the matching facility. The method can accurately calculate a carried maximal user numerical value of the switch in a local area network and has great guide significance for extracting and determining a network construction scheme.

Description

Place capacity based on local network is got the method for deciding

Technical field

The present invention relates to the capacity of equipment appraisal procedure of communication network, more particularly relate to get fixed method for the place capacity of switch in field of mobile communication.

Background technology

Due at price policy, local economy, even comprise the impact of the factors such as uncertainty of user behavior in the different periods of festivals or holidays, the traffic model of different regions differs greatly, therefore be difficult to accurately weigh the bearing capacity of certain switch, causing in the switching network capacity expansion project is built, is newly to found the bureau or the strong theory support of dilatation existing office shortage.

Example by existing network can be seen, local user behavior is the important parameter that affects the switch bearing capacity, and for example, somewhere economy is relatively good, user's frequency of making a phone call, send short messages is higher, administers so the number of users that this regional switch can carry just few.The user behavior that affects exchange processing capability by certain mathematical method add up, refining, obtain the parameter of a group reaction user behavior, be referred to as the traffic model of this area.In the situation that administration as much user, the traffic model difference of different regions makes the also difference to some extent of cpu load of switch.

Equipment vendors are according to the various parameters in traffic model, it is carried out network simulation, perhaps pass through the actual test of existing network, when the user of this area reaches certain value, each module cpu load in switch reaches thresholding system, namely get fixed this value and be the bearing capacity of its equipment, obviously, the place capacity of switch depends on the traffic model of this area.

Existing traffic model is got the method for deciding: get maximum traffic model in China, manufacturer's traffic model accordingly submits to communication common carrier, the place capacity index that it provides, the i.e. unified traffic model of all provinces and cities of the whole nation.

For above method, because the traffic model of each area (being mainly the area of dividing with the province) differs greatly, it is also the characteristics of each provinces and cities that the traffic model that communication common carrier offers manufacturer combines each area, the whole nation, therefore more applicable for some similar provinces and cities, but for most of provinces, difference is larger, causes thus identical device different with the index that group adopts in the bearing capacity in some province.

Summary of the invention

The present invention is for avoiding the existing weak point of above-mentioned prior art, provide a kind of place capacity based on local network to get the method for deciding, by analyzing local network existing network data, get the local network traffic model of deciding each department, make it more press close to the actual conditions of this local network, both solved unified getting and decided traffic model and cause the inaccurate problem of place capacity index, and can better instruct again constructions, reduce investment outlay, simplify supporting enforcement, the saving operation maintenance cost.

Technical solution problem of the present invention adopts following technical scheme:

The characteristics that the place capacity that the present invention is based on local network is got the method for deciding are to carry out as follows:

The index that the local network traffic model is weighed in a, setting comprises:

BHCA: alone family busy hour calling amount

HO: every line alone family busy inter-exchange switching times

LUP: busy position, the alone family of every line update times

SMS: the alone family busy transmission of every line, reception short message number

P1: exchange flight interphone ratio

P2: out conversation ratio

P3: Incoming conversation ratio

P4: color ring user ratio

B, equipment index be set comprise:

Take call attempt number of times BHCA per hour as standard, the maximum BHCA that switch can carry is Bm, and the cpu load threshold value is Cm, and when cpu load reached threshold value and is Cm, the maximum user capacity of carrying was VLR;

When calculating the required BHCA of each operation flow, take a certain " atomic operation " as benchmark, the BHCA of the maximum that switch can be supported is also relative be somebody's turn to do " atomic operation ", the cpu load of " atomic operation " consumption is A at every turn, the cpu load that consumes during other operation flow per call is B, and to convert the coefficient of required BHCA be B/A to the required switch resource of other flow process.

Definition exchange flight interphone BHCA conversion factor is T1, and out conversation BHCA conversion factor is T2, and Incoming conversation BHCA conversion factor is T3, and the switching conversion factor is T4, and it is T5 that conversion factor is upgraded in the position, and the short message conversion factor is T6, and the CRBT conversion factor is T7;

C, determine that switch is in the bearing capacity of this local network

According to the local network traffic model, in conjunction with the correlated performance parameter of each equipment, the method for getting the locking equipment capacity is as follows:

B1: the required BHCA of talk business; B1=VLR * BHCA * (P1 * T1+P2 * T2+P3 * T3);

B2: switch required BHCA; B2=VLR * HO * T4;

B3: required BHCA is upgraded in the position; B3=VLR * LUP * T5;

B4: the required BHCA of short message; B4=VLR * SMS * T6

B5: the required BHCA of Ring Back Tone service; B5=VLR * P4 * BHCA * T7 * (P1+P3)

Bm: the maximum BHCA that switch is supported;

Cm: the maximum cpu load of switch.

Satisfy:

$\mathrm{Cm}=\frac{B1+B2+B3+B4+B5}{\mathrm{Bm}}$

Thereby calculate the heap(ed) capacity VLR of producer's equipment under each local network traffic model, that is:

$\mathrm{VLR}=\frac{\mathrm{Cm}\×\mathrm{Bm}}{\mathrm{BHCA}\×(P1\×T1+P2\×T2+P3\×T3)+\mathrm{HO}\×T4+\mathrm{LUP}\×T5+\mathrm{SMS}\×T6+P4\×\mathrm{BHCA}\×T7\×(P1+P3)}.$

Utilize the inventive method can accurately calculate the maximum number of user value that switch carries in certain local network, getting of Solutiion of Building of Network had great directive significance surely.

Compared with the prior art, beneficial effect of the present invention is embodied in:

1, the traffic model otherness because of same local network is less, the present invention is set as by local network rather than by the switch image data, can solve unified getting and decide traffic model and cause the inaccurate problem of place capacity index, can reduce investment outlay better again, simplify supporting enforcement, save operation maintenance cost.

2, the present invention more presses close to network reality than prior art, can better save space, power supply, investment and operation maintenance cost.Checking through Anhui Mobile GSM 12 phase engineering proposal utilizes the inventive method to lack than original scheme and builds 10 exchanges, has saved the installation area of 100 square metres, the power supply requirement of 100kW and 5 people's cost of human resources.

Below the present invention is further described by embodiment.

Embodiment

Concrete enforcement is carried out according to the following steps:

1, gather the network management data of each local network;

2, analyze data, extract the traffic model of each local network;

Below the traffic model of 3 local networks in the Anhui Province that extracts from network management data:

Local network traffic model example

Parameter	Districts and cities 1	Districts and cities 2	Districts and cities 3
				Alone family BHCA (inferior)	1.52	1.65	1.71
The color ring user ratio	0.6	0.6	0.7
				Switch (inferior)	0.07	0.03	0.01
(inferior) upgraded in the position	1.56	0.81	1.06
				Note (bar)	3.31	2.17	2.11
Exchange flight interphone ratio	0.20	0.22	0.24
				Out conversation ratio	0.42	0.41	0.39
Incoming conversation ratio	0.38	0.37	0.37

3, according to above traffic model, in conjunction with the equipment index of each producer, calculate according to the inventive method the maximum user capacity that equipment can be supported at different local networks simultaneously.

Take the producer 1 of local network 1 as example, the maximum BHCA that this producer's equipment can carry is 3300000, the cpu load threshold value is 70%, the BHCA conversion factor of operations is: exchange flight interphone conversion factor is T1=1.16, and out conversation conversion factor is T2=0.58, and Incoming conversation conversion factor is T3=1, the switching conversion factor is T4=0.38, it is T5=0.38 that conversion factor is upgraded in the position, and the short message conversion factor is T6=0.33, and the CRBT conversion factor is T7=0.19.

Producer 1 at the maximum user capacity VLR that local network 1 can carry is:

It is similar that to calculate the maximum user capacity that different manufacturers can carry in each local network as follows:

Each producer's equipment carries user capacity unit at each local network: ten thousand

The VLR number of users	Districts and cities 1	Districts and cities 2	Districts and cities 3
				Producer 1	74.2	89.9	84.4
Producer 2	67.8	76.3	81.0
				Producer 3	73.4	83.4	90.9

Take districts and cities 1 as example, under value mode in the past, 500,000 number of users can only be carried in producer 3 in districts and cities 1, if demand is 700,000, need newly-built 2 exchanges in these districts and cities, the corresponding electricity needs that will take machine room area and the 10kW of 10 square metres also needs to increase manpower and goes to safeguard simultaneously, and utilizes the achievement of this method, only need to build an office can satisfy the demands, thereby save above resource requirement, reduce costs, obtain greatest benefit.

Claims (1)

1. the place capacity based on local network is got the method for deciding, and it is characterized in that carrying out according to the following steps:

The index that the local network traffic model is weighed in a, setting comprises:

BHCA: alone family busy hour calling amount; HO: every line alone family busy inter-exchange switching times;

LUP: busy position, the alone family of every line update times;

SMS: the alone family busy transmission of every line, reception short message number;

P1: exchange flight interphone ratio; P2: out conversation ratio;

P3: Incoming conversation ratio; P4: color ring user ratio;

B, equipment index be set comprise:

Take call attempt number of times BHCA per hour as standard, the maximum BHCA that switch can carry is Bm, and the cpu load threshold value is Cm, and when cpu load reached threshold value and is Cm, the maximum user capacity of carrying was VLR;

When calculating the required BHCA of each operation flow, take a certain " atomic operation " as benchmark, the BHCA of the maximum that switch can be supported is also relative be somebody's turn to do " atomic operation ", the cpu load of " atomic operation " consumption is A at every turn, the cpu load that consumes during other operation flow per call is B, and to convert the coefficient of required BHCA be B/A to the required switch resource of other flow process;

Definition exchange flight interphone BHCA conversion factor is T1, and out conversation BHCA conversion factor is T2, and Incoming conversation BHCA conversion factor is T3, and the switching conversion factor is T4, and it is T5 that conversion factor is upgraded in the position, and the short message conversion factor is T6, and the CRBT conversion factor is T7;

C, determine that switch is in the bearing capacity of this local network

According to the local network traffic model, in conjunction with the correlated performance parameter of each equipment, the method for getting the locking equipment capacity is as follows:

B1: the required BHCA of talk business; B1=VLR * BHCA * (P1 * T1+P2 * T2+P3 * T3);

B2: switch required BHCA; B2=VLR * HO * T4;

B3: required BHCA is upgraded in the position; B3=VLR * LUP * T5;

B4: the required BHCA of short message; B4=VLR * SMS * T6

B5: the required BHCA of Ring Back Tone service; B5=VLR * P4 * BHCA * T7 * (P1+P3)

Bm: the maximum BHCA that switch is supported; Cm: the maximum cpu load of switch;

Satisfy:

$\mathrm{Cm}=\frac{B1+B2+B3+B4+B5}{\mathrm{Bm}}$

Thereby calculate the heap(ed) capacity VLR of producer's equipment under each local network traffic model, that is:

$\mathrm{VLR}=\frac{\mathrm{Cm}\×\mathrm{Bm}}{\mathrm{BHCA}\×(P1\×T1+P2\×T2+P3\×T3)+\mathrm{HO}\×T4+\mathrm{LUP}\×T5+\mathrm{SMS}\×T6+P4\×\mathrm{BHCA}\×T7\×(P1+P3)}.$