KR20030078158A - Method for auto adding of neighbor list in mobile communication system - Google Patents

Abstract

PURPOSE: A method for automatically adding a neighbor list in a mobile communication system is provided to write a neighbor list item, and to automatically add a neighbor list written by a BSM(Base Station Manager) in BSC and a BTS, thereby improving performance of the system. CONSTITUTION: A BSM(100) writes a neighbor list based on position information of a BTS(300)(S11), and transmits the neighbor list to a BSC(200)(S12). The BSC(200) transmits the neighbor list to the BTS(300)(S13). The BTS(300) updates the neighbor list in BTS PLD(S14), and transmits an updated result to the BSC(200)(S15). The BSC(200) updates the neighbor list in BSC PLD(S16), and transmits an updated result to the BSM(100)(S17). The BSM(100) updates the neighbor list in BSM PLD(S18).

Description

Method for auto adding of neighbor list in mobile communication system

The present invention relates to a method of automatically adding a neighbor list in a mobile communication system that automatically adds adjacent cell information when a base station or a sector is added / deleted in a digital mobile communication system. By creating neighbor list items based on the location information of all base stations in the operating station's PLD, the neighboring cell of the base station or sector added to the base station and sectors is added automatically. The present invention relates to a method of automatically adding a neighbor list in a mobile communication system to add a neighbor list to improve the performance of the system and to effectively handle the operation and maintenance of the system.

In general, a mobile communication system is a communication system for a mobile device such as a person, a car, a ship, or an aircraft, and includes a personal communication system (PCS), a digital cellular system (DCS), and a digital frequency. Public communication system (DTRS, Digital Trunked Radio System) is used.

1 is a block diagram showing a schematic configuration of a general digital mobile communication system.

As shown therein, the mobile station (MS) 10, which is a mobile subscriber's mobile phone moving in an unspecified area within the mobile communication network, wirelessly interfaces data with the mobile station 10, and the control station 30 And a base station transceiver subsystem (BTS) 20 connected to an E1 / T1 link to interface data, and a base station 20 connected to the E1 / T1 to interface data, and a mobile communication switch (not shown). And a control station (BSC, Base Station Controller) 30 which is connected to the global router 40 to interface data, and interfaces data with the control station 30, the operating station 50 and the control station 30 ) Consists of a global router (50) for interfacing data between the terminals and a base station manager (BSM) 50 for performing overall management functions such as operation and maintenance of the control station 30. do.

In the digital mobile communication system having the above configuration, when the mobile station 10 enters the service range of a new base station beyond the service range of one base station, it is possible to continue the call by the handoff function.

That is, when the received signal falls below a predetermined threshold, the mobile station 10 requests a handoff. The base station 20 receives the notification to the control station 30, and the operating station 50 neighbors the base station. If a neighboring base station registered in the list has a base station receiving a signal of an appropriate strength, the call is transferred to the base station.

Here, in order to smoothly perform the handoff, the neighboring cell is managed by the neighboring station in the operator station 50. In a conventional digital mobile communication system, a neighbor base station creation method of the operator station 50 will be described. By selecting the base station to be added to the neighbor list by the command, the neighbor base stations were listed by directly inputting in units of BTS / sector.

Therefore, the current digital mobile communication system is designed to manage up to 20 neighboring base station lists. Therefore, the operator needs to make a list of neighboring base stations by repeating 20 times of manual operations as well known, which requires a lot of time and effort. It was.

Here, in order to prepare the neighbor base station list, the operator must know the location information of the neighbor base station to be input in advance.

Therefore, the operator who does not know the location of the actual base station is impossible to prepare the neighbor base station list.

In other words, when using the base station latitude and longitude information that the operator inputs when the base station or sector in the operation station of the conventional digital mobile communication system as default information, the information of the base station is not known through the GUI Occurs.

For example, if the latitude and longitude of the base station to which the shape information is added have a value of 0, the operator should be aware of the separate base station information as well as the GUI when creating the neighbor base station list. That is, since the list of neighboring base stations must be made based on the base station information which the operator knows, not the operating station information, the above problem occurs.

In addition, as it is well known, the neighbor base station list is created by the manual operation of the operator, so it is inconvenient to create the neighbor list every time the base station is relocated by checking the base station ID (ID) and location. The work can cause a load on the system or cause inconsistency of data, and there is a problem in that an error occurs in creating a neighbor base station list due to lack of accuracy.

Here, when an error occurs in creating the neighbor base station list, the neighbor base station list retrieval time increases and a handoff fails.

Accordingly, the present invention is proposed to solve the above problems of the prior art,

An object of the present invention is to add neighboring cell information when adding / deleting a base station or a sector of a digital mobile communication system. By creating a neighbor list item based on the location information of, and allowing the control station and the base station to automatically add the neighbor list created by the operating station, it is possible to improve the performance of the system by adding the neighbor list without any additional work. The present invention provides a method of automatically adding a neighbor list in a mobile communication system to effectively handle the operation and maintenance of a network.

The present invention for achieving the above object,

Creating a neighbor list in the BSM based on location information of all base stations BTS;

Transmitting the created neighbor list to a control station (BSC) after preparing the neighbor list;

Transmitting the neighbor list to a base station at the control station receiving the neighbor list;

Updating, by the base station receiving the neighbor list, the neighbor list to a base station PLD;

After the updating, transmitting the update result to the control station, and updating the neighbor list to the control station PLD according to the update result of the base station at the receiving control station;

After the update, if the update result is transmitted to the operating station, it is characterized in that the operating station is configured to update the neighbor list to the operating station PLD according to the update result of the control station.

In addition, the present invention for achieving the above object,

When the automatic creation of a neighbor list is started, the operating station checking a range of latitude and longitude of the base station that can be recognized as a neighbor base station;

After checking the latitude and longitude range of the base station, comparing a base station ID and a maximum number of base stations MAX_BTS_PER_BSM corresponding to one operating station;

When the base station ID is smaller than the maximum number of base stations corresponding to one operating station, checking the latitude and longitude of the selected base station;

Checking latitude and longitude of the base station, checking whether the base station is within a latitude and longitude range of a neighbor list;

If it is not within the range of the check result, the process proceeds to the comparing step and performs the process again, and if it is within the range of the check result, adding the number of sectors of the base station to the neighbor list. It is characterized by the methodological configuration.

1 is a block diagram showing a schematic configuration of a general digital mobile communication system,

2 is a flowchart illustrating a method of automatically adding a neighbor list in a mobile communication system according to the present invention;

3 is a flowchart illustrating a process of creating a neighbor list in a mobile communication system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100 ..... Station (BSM)

200 ..... Base Station Controller (BSC)

300 ..... Base Station Transceiver Subsystem

Hereinafter, a preferred embodiment of the method of automatically adding a neighbor list in a mobile communication system according to the above technical concept will be described in detail with reference to the accompanying drawings.

2 is a flowchart illustrating a method of automatically adding a neighbor list in a mobile communication system according to the present invention.

As shown therein, step S11 of creating a neighbor list based on the location information of all base stations BTS in the BSM 100, and after creating the neighbor list, the control station BSC Transmitting the created neighbor list to a step S12; transmitting the neighbor list to the base station 300 at the control station 200 that has received the neighbor list; Updating the neighbor list to the base station PLD by the received base station 300 (S14), and transmitting the update result to the control station 200 (S15) after receiving the update, The control station 200 updates the neighbor list to the control station 200 PLD according to the update result of the base station 300 (ST16), and after the update, transmitting the update result to the operating station 100 (S17). ) And the operation that received the update result It is configured in the 100 to step (S18) of updating the unyongguk 100 PLD a neighbor list according to the update result of the control station 200.

The method of automatically adding a neighbor list in a mobile communication system according to the present invention having the above configuration will be described in more detail as follows.

First, when adding a base station and a sector, one of the operations performed by the operating station 100, the control station 200, and the base station 300. First, considering information about the location of the added base station and sector, information on neighboring cells is obtained. Part of collecting through the PLD and the information is transmitted to the control station 200, the base station 300, and the operating station 100, the control station 200, the base station 300 automatically adds the neighbor list based on this Divided into parts.

Meanwhile, when adding a base station and a sector, the operating station 100 searches for the location information of the base station by the PLD and constructs a neighbor list based on the location of the cell to be currently added. The collected neighbor list is transmitted to the control station 200 and the base station 300, and the control station 200 and the base station 300 transfer the neighbor list delivered from the operating station 100 to the neighbor list of the added base station and sector. It will be added automatically.

3 is a flowchart illustrating a process of creating a neighbor list in a mobile communication system according to the present invention.

As shown in the figure, the step of automatically starting the neighbor list (Neighbor List) is started (ST101), and after starting to create the neighbor list, to check the range of latitude and longitude of the base station that can be recognized as a neighbor base station by the operating station (BSM) In step ST102, after checking the latitude and longitude range of the base station, comparing a base station ID (Identifier) with the maximum number of base stations (MAX_BTS_PER_BSM) corresponding to one operating station (ST103), and as a result of the comparison, the base station ID If is less than the maximum number of base stations corresponding to one operating station, checking the latitude and longitude of the selected base station (ST104), and after checking the latitude and longitude of the base station, the base station is the latitude and longitude range of the neighbor list Step ST105 for checking whether there exists a file within the range, and if it does not exist within the range of the check result, the process proceeds to step ST103 to perform the process again, Results when present in the range, as long as the number of sectors (sector) of the base station comprises a step (ST106) for adding in the neighbor list.

Looking at the process of creating a neighbor list in a mobile communication system according to the present invention having the above configuration in more detail as follows.

The operator searches for a base station that can be included as a neighboring base station by using latitude and longitude information of the selected base station. Here, the range of the latitude and longitude of the base station to be included in the neighbor base station list is selected by the operator, and whether the base station to be included in the neighbor base station list by searching the latitude and longitude information of the selected base station within the set latitude and longitude range Search.

In the case of the base station to be included in the neighboring base station list, the searched base station searches whether the base station exists within the latitude and longitude range of the neighboring base station list.

That is, after determining base stations and sectors to be included in the neighbor base station list by using latitude and longitude information of the base station, it is searched whether this information is suitable as the neighbor base station list.

If the selected base station is not within the latitude and longitude range of the neighbor base station list, the process returns to step ST103. If the selected base station is within the latitude and longitude range of the neighbor base station list, the selected base station is selected as the neighbor base station. Add the list, and store the neighbor base station list in the operating station PLD.

According to the above-described "method of automatically adding a neighbor list in a mobile communication system", a neighbor list item is created based on location information of all base stations in an operating station's PLD, using neighbor cells of a base station or a sector added when a base station or a sector is added. In addition, by allowing the control station and the base station to automatically add the neighbor list created by the operating station, it is possible to improve the performance of the system by adding the neighbor list without additional work, and can effectively handle the operation and maintenance of the system. Has an advantage.

In addition, as noted above, adding a neighbor list automatically when adding a base station and a sector or automatically adding a neighbor during system operation may provide an operator with convenience in system operation, thereby reducing the effect of time and effort reduction. In addition, it has the advantage of solving the problem of data inconsistency and system performance degradation that may occur when adding neighbor list through frequent operation commands.

Claims (2)

In the method of neighbor list management in a digital mobile communication system comprising a base station manager (BSM), a control station (BSC, Base Station Controller), and a base station (BTS (Base station Transceiver Subsystem), Creating a neighbor list at the BSM based on location information of all base stations; Transmitting the created neighbor list to a control station (BSC) after preparing the neighbor list; Transmitting the neighbor list to a base station at the control station receiving the neighbor list; Updating the neighbor list to a base station PLD at the base station receiving the neighbor list; After the updating, transmitting the update result to the control station, and updating the neighbor list to the control station PLD according to the update result of the base station at the receiving control station; After the update, if the update result is transmitted to the operating station, the neighboring station is automatically added to the mobile station, characterized in that the operating station receives the step of updating the neighbor list to the operating station PLD according to the update result of the control station. Way. The method of claim 1, wherein the preparation of the neighbor list is Checking the range of latitude and longitude of the base station recognizable as a neighbor base station by the operating station when the neighbor list is automatically created; After checking the latitude and longitude range of the base station, comparing a base station ID and a maximum number of base stations MAX_BTS_PER_BSM corresponding to one operating station; Ascertaining latitude and longitude of the selected base station when the base station ID is smaller than the maximum number of base stations corresponding to one operating station; Checking latitude and longitude of the base station and checking whether the base station is within a latitude and longitude range of a neighbor list; If not in the range of the check result, and proceeding to the comparison step and performing the process again, if it is within the range of the check result, adding to the neighbor list as many sectors (sector) of the base station Method of automatically adding a neighbor list in a mobile communication system, characterized in that.