KR20120124262A - Scheduling Method and Scheduler for Traffic Distribution In Wireless Telecommunication System - Google Patents

Abstract

PURPOSE: A scheduling method and a scheduler for traffic distribution in a wireless telecommunication system are provided to receive a desired time zone and a traffic threshold value from an operator and to generate a scenario and to change automatically a parent station of a specific repeater. CONSTITUTION: A wireless communications system receives a desired time zone or a traffic threshold value from an operator(S410). The wireless communications system generates a scenario using the time zone or the traffic threshold value(S420). The wireless communications system watches the traffic of each base station and determines whether the scenario is satisfied(S430). If the scenario is satisfied, the wireless communications system changes a parent station of a specific repeater(S440). [Reference numerals] (AA) Start; (BB) No; (CC) Yes; (S410) Receiving a desired time zone or a traffic threshold value from an operator; (S420) Generating a scenario using the desired time zone or the traffic threshold value; (S430) Satisfying the scenario?; (S440) Changing a parent station of a specific repeater

Description

Scheduling Method and Device for Traffic Distribution in Wireless Communication System

The present invention relates to a wireless communication system, and more particularly, to generate a scenario by receiving a desired time zone or traffic threshold from an operator in order to perform traffic distribution, and when the generated scenario is satisfied, a wireless station that automatically changes the home station of a specific repeater. A traffic distribution scheduling method and apparatus in a communication system.

With the recent increase in the use of smartphones, data traffic is exploding due to the use of unlimited data plan of smartphone users. As a result, quality deterioration of systems in certain areas such as urban areas, university districts, and business complexes frequently occurs. To solve this problem, new base stations, FA expansion, and call distribution are being implemented.

1 is a graph showing a traffic trend of a conventional base station for each time zone.

As shown in FIG. 1, in a particular industrial complex or university, a certain pattern is shown for each time slot when analyzing traffic trends for each base station. For example, in Yeongnam University, Gyeongsan, traffic increases at the base station (Gyeongsan Daedong SDW), which serves on-campus campus during the day, and traffic increases at the base station (Gyeongsanjoyoung SDW), which serves one-room village and restaurant at night and dawn. It can be seen that.

Other universities, metropolitan cities (offices ↔ nightlife) and industrial complexes (factories ↔ homes) also show similar trends.

In order to solve such a problem, a new investment of the base station can be considered, but it is not efficient because the new investment of the base station causes a significant loss in time and cost.

The present invention was devised to solve the above problems, and can wirelessly change the home country of the repeater that leads the traffic in a region where traffic concentration is continuously repeated for each time zone such as a university, a large industrial complex, and an office. An object of the present invention is to provide a traffic distribution scheduling method and apparatus in a communication system.

To this end, according to a first aspect of the present invention, a wireless communication system according to the present invention comprises: a plurality of base stations in which a plurality of repeaters are located in a coverage area; And a traffic distribution scheduling apparatus for generating a scenario by receiving a desired time zone or traffic threshold value from an operator, and changing a mother station of a specific repeater when the generated scenario is satisfied.

The apparatus for scheduling traffic distribution may change the mother station of the specific repeater in a scheduling manner between the same base station sector, between base stations 1: 1, and base station 1: N.

The apparatus may further include a monitoring and control device configured to perform a status monitoring and control function of the traffic distribution scheduling device.

According to a second aspect of the present invention, there is provided a traffic distribution scheduling apparatus in a wireless communication system according to the present invention, including: a database storing scenarios, which are conditions necessary for traffic distribution, and base station change information for which a base station to which a base station to change to each relay station is designated; A scenario generator configured to generate a scenario by receiving a desired time zone or a traffic threshold from an operator and store the generated scenario in the database; And a mother station changing unit for changing a mother station of a specific repeater according to the base station change information when the database stored scenario is satisfied.

The home station changing unit may change the home station of the specific repeater when a desired time zone arrives.

The mother station changing unit monitors traffic of each base station, and when the traffic of a specific base station exceeds the traffic threshold, changes the mother station of a repeater located in a coverage area of the specific base station.

The mother station changing unit may change a mother station of a repeater located in a coverage area of the specific base station when a failure or failure of the specific base station occurs.

When changing the mother station of the specific repeater, the power control unit for controlling the power of each base station signal through an intelligent power control algorithm (Intelligent Power Control) that gradually increases or decreases the power of each base station signal.

The mother station changing unit may change a mother station of the specific repeater in a scheduling manner between sectors of the same base station, between base stations 1: 1 and between base stations 1: N.

It further comprises a gain control unit for adjusting the gain for the forward signal and the reverse signal between the repeater and the base station.

Each device existing in the wireless communication system is connected to a double line, and if an error occurs in one line, further comprising a line backup unit for performing a backup function through another line.

According to a third aspect of the present invention, a traffic distribution scheduling method in a wireless communication system according to the present invention includes: generating a scenario using a desired time zone or a traffic threshold; Determining whether to satisfy the generated scenario while monitoring traffic of each base station; And if the generated scenario is satisfied, changing the home station of the specific repeater.

In the step of changing the home station of the specific repeater, when the desired time zone arrives, the home station of the specific repeater may be changed.

In the step of changing the base station of the specific repeater, the traffic of each base station is monitored, and if the traffic of the specific base station exceeds the traffic threshold, it is characterized in that the change of the base station of the repeater located in the coverage area of the specific base station do.

In the step of changing the home station of the specific repeater, when changing the home station of the specific repeater, the power of each base station signal is adjusted through an intelligent power control algorithm (Intelligent Power Control) to gradually increase or decrease the power of each base station signal It is done.

In the step of changing the base station of the specific repeater, it is characterized in that the base station of the specific repeater is changed in the scheduling manner between the same base station sector, between base station 1: 1 and base station 1: N.

According to the present invention, by generating a scenario by receiving a desired time zone or traffic threshold from the operator, and if the generated scenario is satisfied, by providing a traffic distribution scheduling method and apparatus in a wireless communication system that automatically changes the mother station of a specific repeater In addition, by distributing the load of the base station with a large amount of calls to the adjacent base station, the capacity can be secured more than twice, thereby increasing the capacity without additional addition of the base station.

1 is a graph showing a traffic trend by time of a conventional base station;
2 is a view for explaining the principle of traffic distribution scheduling in a wireless communication system according to an embodiment of the present invention;
Figure 3 is a block diagram showing a schematic configuration inside the STD according to an embodiment of the present invention,
4 is a flowchart illustrating a traffic distribution scheduling method in a wireless communication system according to an embodiment of the present invention;
5 is a graph comparing traffic trends of a conventional base station and a base station according to the present invention according to time zones.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description.

Prior to the detailed description of the present invention, the same components will be denoted by the same reference numerals even if they are displayed on different drawings, and the detailed description will be omitted when it is determined that the well-known configuration may obscure the gist of the present invention. do.

In one embodiment of the present invention, a scheduling method for traffic distribution is described as an example of a scheduling method between base stations 1: 1, but is not limited thereto. The scheduling method for traffic distribution according to the present invention may be performed between the same base station sectors. It may include all of the scheduling scheme between the base station 1: 1 and the base station 1: N.

2 is a diagram illustrating a traffic distribution scheduling principle in a wireless communication system according to an embodiment of the present invention.

Referring to FIG. 2, a wireless communication system according to the present invention includes a first base station 210 in which a plurality of repeaters including a first repeater 200a is located in a coverage area, and a second repeater 200b in a coverage area. And a second base station 220 including a plurality of repeaters, a scheduler for traffic distribution (STD) 230, a monitoring and control device 240, and the like.

The STD 230 generates a scenario by receiving a desired time zone or traffic threshold from the operator, and when the generated scenario is satisfied, the STD 230 removes the mother station of the first repeater 200a located in the coverage area of the first base station 210. 2 is changed to the base station 220, or the base station of the second repeater 200b located in the coverage area of the second base station 220 is changed to the first base station 210.

That is, as shown in (a) of FIG. 2, the STD 230 may be located in the coverage area of the first base station 210 according to the increase in intra-university traffic from daytime time, from 09:00 to 18:00. The load between the base stations is distributed by changing the mother station of 200a to the second base station 220.

In addition, as shown in (b) of FIG. 2, the STD 230 is located in the coverage area of the second base station 220 according to the increase in traffic in the studio from 18:00 to 09:00 the night time zone, which is the night time zone. The load between the base stations is distributed by changing the mother station of 200b to the first base station 210.

In addition, the STD 230 monitors the traffic of each base station, and when the traffic of the first base station 210 exceeds the traffic threshold, the STD 230 of the first repeater 200a located in the coverage area of the first base station 210 is located. When the mother station is changed to the second base station 220 and the traffic of the second base station 220 exceeds the traffic threshold, the mother station of the second repeater 200b located in the coverage area of the second base station 220 is deleted. By changing to one base station 210, the load between the base stations is distributed.

In addition, when the failure or failure of the first base station 210 occurs, the STD 230 changes the mother station of the first repeater 200a located in the coverage area of the first base station 210 to the second base station 220, When a failure or failure of the second base station 220 occurs, the load between the base stations can be distributed by changing the mother station of the second repeater 200b located in the coverage area of the second base station 220 to the first base station 210. .

In addition, each device existing in the wireless communication system is all connected by a double line, so that the STD 230 performs a backup function through another line when an error occurs in one line.

In addition, when the STD 230 changes the home station of the repeater, the power of each base station signal is adjusted through an intelligent power control algorithm that gradually increases or decreases the power of each base station signal. To prevent disconnection.

In addition, the STD 230 may adjust the gain for the forward signal and the reverse signal between the repeater and the base station.

The monitoring and control device 240 is a device for performing the state monitoring and control function of the STD 230, the operator is connected to the STD 230 through the monitoring and control device 240, input the desired time zone or traffic threshold You may.

3 is a block diagram illustrating a schematic configuration of an STD according to an embodiment of the present invention.

Referring to FIG. 3, the STD 230 according to the present invention includes a controller 310, a database 320, a scenario generator 330, a home station changer 340, a power controller 350, and a gain adjuster 360. ) And a line backup unit 370 and the like.

The controller 310 is a device for controlling the overall operation of the STD 230, and transfers data generated between the functional units in the STD 230, and controls the operation of each functional unit.

The database 320 includes a scenario DB 322 for storing a scenario generated using a desired time zone or a traffic threshold, and a base station change for storing base station change information for which a base station (hereinafter, referred to as a “target base station”) to which the base station to change to the home station for each repeater is designated. Information DB 324 is included. For example, in FIG. 2, the target base station of the first repeater 200a becomes the second base station 220, and the target base station of the second repeater 200b becomes the first base station 210.

The scenario generator 330 generates a scenario by receiving a desired time zone or traffic threshold from the operator, and stores the generated scenario in the scenario DB 322 of the database 320.

When the mother station changing unit 340 satisfies the scenario stored in the scenario DB 322, the mother station changing unit 340 changes the mother station of the specific repeater according to the base station change information stored in the base station change information DB 324. That is, when the desired time zone arrives, the mother station changing unit 340 changes the mother station of the specific repeater. In addition, the mother station changing unit 340 monitors the traffic of each base station, and when the traffic of the specific base station exceeds the traffic threshold, changes the mother station of the repeater located in the coverage area of the specific base station.

In addition, the mother station changing unit 340 may change the mother station of the repeater located in the coverage area of the specific base station when a failure or failure of the specific base station occurs.

The power control unit 350 adjusts the power of each base station signal through an intelligent power control algorithm that gradually increases or decreases the power of each base station signal when the home station of the repeater is changed.

The gain adjuster 360 adjusts gains of the forward signal and the reverse signal between the repeater and the base station.

In addition, each device existing in the wireless communication system is all connected by a dual line, the line backup unit 370 may perform a backup function through the other line, if an error occurs in one line.

4 is a flowchart illustrating a traffic distribution scheduling method in a wireless communication system according to an embodiment of the present invention.

Referring to FIG. 4, a desired time zone or traffic threshold is input from an operator (S410), and a scenario is generated using the received time zone or traffic threshold (S420).

It is determined whether the generated scenario is satisfied while monitoring the traffic of each base station (S430), and when the generated scenario is satisfied, the mother station of the specific repeater is changed (S440).

For example, as shown in (a) of FIG. 2, the first repeater 200a located in the coverage area of the first base station 210 according to the increase in intra-universal traffic from daytime time period from 09:00 to 18:00 The mother station is changed to the second base station 220.

Also, as shown in (b) of FIG. 2, the mother station of the second repeater 200b located in the coverage area of the second base station 220 according to the increase in traffic in the studio from 18:00 to the next day at 09:00 in the night time zone Is changed to the first base station 210.

In addition, when the traffic of the first base station 210 exceeds the traffic threshold, the home station of the first repeater 200a located in the coverage area of the first base station 210 is changed to the second base station 220, When the traffic of the second base station 220 exceeds the traffic threshold, the mother station of the second repeater 200b located in the coverage area of the second base station 220 is changed to the first base station 210.

In order to prevent a call disconnection occurring during the change of the mother station in step S440, the power of each base station signal is adjusted through an intelligent power control algorithm that gradually increases or decreases the power of each base station signal.

For example, as shown in FIG. 2A, when the mother station of the first repeater 200a is changed from the first base station 210 to the second base station 220, the signal of the first base station 210 is changed. The power strength becomes weaker, and the power strength of the signal of the second base station 220 becomes stronger. Also, as shown in FIG. 2B, when the mother station of the second repeater 200b is changed from the second base station 220 to the first base station 210, the signal of the second base station 210 is changed. The power strength becomes weaker, and the power strength of the signal of the first base station 210 becomes stronger.

5 is a graph comparing traffic trends of a conventional base station and a base station according to the present invention according to time zones.

As a result of analyzing the traffic trends according to time slots for the conventional base station, as shown in (a) of FIG. 5, the peak value is different according to day / night, and even though the traffic is excessive in some specific time periods, the channel Base station resources, including cards and transmission paths, should be expanded to meet peak values, and new investments by base stations are inevitable when the limits are reached.

As in the present invention, the scenario is generated by receiving a desired time zone or traffic threshold value from the operator, and when the generated scenario is satisfied, when the mother station of the specific repeater is automatically changed, as shown in FIG. It can be seen that the traffic gap between the base stations (Traffic Gap) is reduced, and the effect of distributing the traffic between the base stations according to the effect can reduce not only operational efficiency but also new base station investment cost.

The embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

The present invention generates a scenario by receiving a desired time zone or traffic threshold from the operator, and provides a traffic distribution scheduling method and apparatus in a wireless communication system that automatically changes the mother station of a specific repeater when the generated scenario is satisfied, Since the load of many base stations can be distributed to neighboring base stations, the capacity can be secured more than twice, and thus the capacity can be increased without additional base stations, thereby exceeding the limitations of the existing technology. This is an invention that can be used industrially because it is not only sufficient marketability or sales potential of the device to be applied, but also practically obvious.

200a: first repeater 200b: second repeater
210: first base station 220: second base station
230: traffic distribution scheduling device 240: monitoring and control device
310: control unit 320: database
330: scenario generation unit 340: home country change unit
350: power control unit 360: gain control unit
370: track backup unit

Claims (16)

A plurality of base stations in which a plurality of repeaters are located in a coverage area; And
A traffic distribution scheduling apparatus for generating a scenario by receiving a desired time zone or a traffic threshold value from an operator, and changing a mother station of a specific repeater when the generated scenario is satisfied;
Wireless communication system comprising a. The method of claim 1,
The traffic distribution scheduling apparatus is a wireless communication system, characterized in that for changing the base station of the specific repeater in the scheduling between the same base station sector, between base station 1: 1 and base station 1: N. The method of claim 1,
A monitoring and control device for performing a status monitoring and control function of the traffic distribution scheduling device;
Wireless communication system further comprises. A database that stores base station change information for which a base station to be changed into a mother station for each relay and a scenario which is a condition necessary for traffic distribution;
A scenario generator configured to generate a scenario by receiving a desired time zone or a traffic threshold from an operator and store the generated scenario in the database; And
A mother station changing unit for changing a mother station of a specific repeater according to the base station change information when the database stored scenario is satisfied;
Traffic distribution scheduling apparatus in a wireless communication system comprising a. The method of claim 4, wherein
And the mother station changing unit changes the mother station of the specific repeater when a desired time period arrives. The method of claim 4, wherein
The mother station changing unit monitors the traffic of each base station, and when the traffic of a specific base station exceeds the traffic threshold, traffic distribution in the wireless communication system, characterized in that to change the mother station of the repeater located in the coverage area of the specific base station. Scheduling device. The method of claim 4, wherein
And a mother station changing unit changes a mother station of a repeater located in a coverage area of the specific base station when a failure or failure of the specific base station occurs. 8. The method according to any one of claims 4 to 7,
A power control unit controlling power of each base station signal through an intelligent power control algorithm that gradually increases or decreases the power of each base station signal when the home station of the specific repeater is changed;
Traffic distribution scheduling apparatus in a wireless communication system, characterized in that it further comprises. The method of claim 4, wherein
And the mother station changing unit changes the mother station of the specific relay in a scheduling manner between the same base station sector, between base stations 1: 1, and base station 1: N. The method of claim 4, wherein
A gain adjusting unit controlling gains of the forward and reverse signals between the repeater and the base station;
Traffic distribution scheduling apparatus in a wireless communication system, characterized in that it further comprises. The method of claim 4, wherein
Each device present in the wireless communication system is connected by a double line,
A line backup unit performing a backup function through another line when an error occurs in one line;
Traffic distribution scheduling apparatus in a wireless communication system, characterized in that it further comprises. Creating a scenario using a desired time zone or traffic threshold;
Determining whether to satisfy the generated scenario while monitoring traffic of each base station; And
Changing a mother station of a specific repeater when the generated scenario is satisfied;
Traffic distribution scheduling method in a wireless communication system comprising a. The method of claim 12, wherein in the step of changing the home station of the specific repeater,
When the desired time zone arrives, the traffic distribution scheduling method in the wireless communication system, characterized in that for changing the mother station of the specific repeater. The method of claim 12, wherein in the step of changing the home station of the specific repeater,
And monitoring the traffic of each base station and changing the base station of the repeater located in the coverage area of the specific base station when the traffic of the specific base station exceeds the traffic threshold. The method according to any one of claims 12 to 14, wherein in the step of changing the home station of the specific repeater,
When changing the base station of the specific repeater, the traffic distribution scheduling method in a wireless communication system characterized in that the power of each base station signal is adjusted through an intelligent power control (Intelligent Power Control) that gradually increases or decreases the power of each base station signal. The method of claim 12, wherein in the step of changing the home station of the specific repeater,
A method for scheduling distributed traffic in a wireless communication system, characterized in that the mother station of the specific repeater is changed by the same base station sector, base station 1: 1, and base station 1: N.

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