KR20010045616A - Two different cell service method in a base station - Google Patents

Abstract

PURPOSE: A method of servicing two cells in one base station is provided to prevent the squandering of the base station's resources, thereby operating the network more efficiently in cellular communication system. CONSTITUTION: In a process, a separate FA to a conventional operation FA is increased in the first channel(GROW-CDMA-CH)(203), only data relating to the increased FA is transmitted and a service is not performed. In addition, a process is to perform the service by making the corresponding FA active in the second channel(ACT-CDMA-CH). Two cells are simultaneously serviced in the same base station by using the separate operation frequency bandwidth information (CDMA_CHANNEL_LIST) transformed and being written in the increase of FA. In order to maintain the continuity of the service, a state management block checks periodically the state of the subcell, transmits to a shape management block and updates the library(in steps of 201 and 202). Also, the shape management block checks periodically the state library and attempts again from the check routine of an initial state when receiving information on the subcell state from the state management block(in steps of 211-213).

Description

How to service two cells in one base station {TWO DIFFERENT CELL SERVICE METHOD IN A BASE STATION}

The present invention relates to a cell service method of a cellular communication system, and more particularly, to a method of serving two different cells in one base station.

In general, cellular communication systems, such as Code Division Multiple Access (CDMA) -based systems (hereinafter referred to as "CDMA systems"), are subscribers through the area of cells, as their name implies. It designates a space for service, and the space is operated in a system called a base station. In this case, one cell is typically serviced by one base station.

For example, in a CDMA system, necessary data and messages are exchanged between a terminal and a base station through an overhead channel prior to a call communication. Among these overhead channels, in particular, the paging channel is a channel that carries many messages required for call setup. At this time, the so-called "CDMA Channel List" is a message necessary to determine the frequency band of the cell in which the terminal is currently located, and includes all information on the frequency band operated by the corresponding base station and is transmitted to the terminal. The terminal selects a frequency suitable for itself based on this information, attempts to make a call, and maintains a continuous call. Therefore, in order to perform a normal service, the base station is responsible for generating information of these frequency bands and delivering the contents thereof.

As described above, in a CDMA system, a base station provides information on all frequency bands in which a base station operates normally to a terminal, so that the terminal selects a frequency band for itself to tune, attempts to call the frequency band, and performs continuous service. . This operating frequency band information (hereinafter referred to as "CDMA_CHANNEL_LIST") is generated in the configuration management block of the base station and is transmitted to the terminal through the paging channel. The process of generating the CDMA_CHANNEL_LIST and the process of additionally generating the CDMA_CHANNEL_LIST for the newly-added frequency band (hereinafter, referred to as "FA") will now be described in detail.

First, a CDMA_CHANNEL_LIST for an FA that is normally in Service (hereinafter referred to as "INS") is created as follows. Check the EQUIP status for each FA recorded in the programmable logic device (PLD) first, then select only the FAs in the dual EQUIP status. Also, select only CDMA_CH_KIND for Primary, Secondary, and Normal for the FA, and select the subcell whose subcell status is INS among the selected FAs, and then record in the existing PLD. Reads the selected frequency. The first CDMA_CHANNEL_LIST is created for each subcell against the frequency data thus read. The contents of the created CDMA_CHANNEL_LIST are transferred to the normal paging channel of each corresponding subcell, which can be expressed as shown in FIG. 1.

In FIG. 1, the current state is INS up to 3FA, and all of the subcells are also normal. In addition, it is assumed that 1FA is recorded as 100, 2FA is 200, and 3FA is 300. At this time, the frequency information up to 3FA is read from the PLD and recorded in the CDMA_CHANNEL_LIST, and the remaining 4-7FA are all recorded as 0 so that the terminal recognizes the service as a non-service type. In this way, the terminal can only know the information about the 3FA in the region (cell), and selects one of the 1,2,3FA to attempt the call, and also performs the continuous service. The state of the subcell is always in flux, so the base station state management block periodically checks the state of the subcell and delivers its contents to the configuration management block. Make sure you have the right information. In addition, the CDMA_CHANNEL_LIST is updated by periodically checking the subcell status library in the configuration management block in order to prevent signal loss from the status block.

On the other hand, most current CDMA systems are designed in such a manner that one base station is necessarily provided to provide a service to one cell. This design made it necessary to install a base station in order to eliminate the shadow area even if there are areas where there are not many subscribers or areas that do not necessarily need to install a base station. This has resulted in wastage of resources in these areas and presents significant difficulties in network design. For example, in mountainous and wide plains such as Gangwon-do, the actual number of subscribers is not high, but a lot of loss is expected because a separate base station must be installed and operated to reduce the shadow area.

Accordingly, an object of the present invention is to provide a cell service method for more efficiently operating a network by preventing waste of base station resources in a cellular communication system.

Another object of the present invention is to provide a cell service method for facilitating network design in a cellular communication system.

In order to achieve these objects, the present invention solves the above-mentioned problems by using a function called "FA extension" and proposes a method in which a large effect can be obtained by modifying CDMA_CHANNEL_LIST created at the time of extension.

According to a first aspect of the present invention, a cell service method of a cellular communication system includes: adding an FA that is separate from an existing FA in a first channel (GROW-CDMA-CH), and in this extended FA; A process of transmitting data only and not performing a service, and performing a service by activating a corresponding FA in a second channel (ACT-CDMA-CH). By using the operating frequency band information of the (CDMA_CHANNEL_LIST) is characterized in that to simultaneously service two different cells in the same base station.

According to a second aspect of the present invention, a cell having a repeater capable of converting a frequency coming from a base station, and two different cells in one base station of a cellular communication system using the same RF unit as the base station to serve other cells. The service method of the method includes: adding a new FA using an extension command, a process of the base station state management block identifying a state of each subcell of the corresponding FA, and a base station configuration management block identifying a channel type of the corresponding FA If the channel of the corresponding FA is a primary and normal channel, a process of operating a normal FA by creating an initial or updated operating frequency band information list (CDMA_CHANNEL_LIST) for all FAs and delivering the same to a paging channel; If the channel of the corresponding FA is another cell, make a separate operating frequency band information list for the corresponding FA and then It characterized by including the step of periodically check the course and the sub-cell state library for operating the other cells FA by passing a ranging channel and updates the operating frequency band information list according to the check result.

1 is a view showing operating frequency band information (CDMA_CHANNEL_LIST) generated according to the prior art.

2 is a flowchart illustrating a processing of a cell service operation according to the related art.

3 is a view showing operating frequency band information (CDMA_CHNNEL_LIST) generated in accordance with the present invention.

4 illustrates a configuration of a base station for cell service operation according to the present invention.

5 is a flowchart illustrating a processing of a cell service operation according to the present invention.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that reference numerals and like elements among the drawings are denoted by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The procedure for adding and operating a new FA according to the present invention is performed as follows.

First, an FA to be added in GROW_CDMA_CH is added. At this time, the delimiter (CDMA_CH_KIND) for the FA to be added should be selected from primary, secondary, and normal. In the programmable logic device (PLD), all FAs are treated as EQUIP, and all of them are normal in data, but the service state is processed out of service (hereinafter referred to as "QOS"). EQUIP is actually performed by dropping all the values, but no service is performed.

Next, by activating the corresponding FA in ACT_CDMA_CH, the service state is made to INS to perform the service. In addition, the expanded FA is included in the CDMA_CHANNEL_LIST like the existing FAs so that the terminal recognizes that it exists in the same base station so that the new extended FA can be provided with the service.

As the FA is expanded and operated in this way, the CDMA_CH_KIND of Primary, Secondary, and Normal is always distinguished from the expanded FA. However, all of them are judged to be the same CDMA_CH_KIND and CDMA_CHANNEL_LIST is created. Done.

As described above, the present invention focuses on the smooth operation of the base station by operating separately from the existing FA for the newly increased FA, and as part of the method, the CDMA_CHANNEL_LIST is different from the existing FA (Other_Cell). This is to achieve the intended purpose by preparing FA differently and retaining separate information.

The configuration of the present invention can be divided and described as follows.

(1) Related PLD History

All FA information is recorded in the PLD and the relations for the relevant PLD are listed as follows. The relation for the PLD includes sector data information, frequency number information (CDMA_Id Number Data), channel configuration information (CDMA Channel Config; CDMA_CH_KIND, etc.), paging channel configuration information (Pagind Channel Config), cell configuration information, sub- Cell data;

(2) FA and subcell state management

To create a CDMA_CHANNEL_LIST, status information on the corresponding FA and subcells is essential. Therefore, the state information necessary for the present invention includes periodic state management and library update information for the corresponding subcell, and the information is transmitted to the configuration management block when the state of the subcell changes.

(3) Expansion procedure

It is performed in the same way as the existing expansion procedure. A new FA is added in GROW-CDMA-CH, and CDMA_CH_KIND is operated as another cell FA. In ACT-CDMA-CH, the service is maintained in the same manner as the conventional method.

(4) call processing

The other cell service state is INS, and the general subscriber's incoming call (subscriber entry) is made to the corresponding FA to provide normal service to the general subscriber in the conventional manner. It also provides services for existing FAs in the same way.

(5) Create CDMA_CHANNEL_LIST

Create a CDMA_CHANNEL_LIST for a normal FA and create a separate CDMA_CHANNEL_LIST for another cell FA. That is, a CDMA_CHANNEL_LIST as shown at the top of FIG. 3 is created for a normal FA, and a CDMA_CHANNEL_LIST as shown at the bottom of FIG. 3 for an FA of another cell (Other_Cell). CDMA_CHANNEL_LIST shown in FIG. 3 is a diagram showing an example created assuming that a frequency of 1FA is 100 and a frequency of 2FA is 200.

(6) Relay equipment and RF unit

There is a need for a repeater that can up / down the frequency from the base station. Here, down conversion means receiving and converting a frequency transmitted from a base station, and up conversion means converting and transmitting a frequency for transmitting to a base station. The same RF (Radio Frequency) unit as the base station is used to serve other cells. A repeater and an RF unit capable of converting the frequency coming from the base station are provided in another cell as shown in FIG. 4.

5 is a flowchart illustrating a processing of a cell service operation according to the present invention. The operation according to this processing flow is performed as follows.

(1) Add a new FA (step 203).

(2) Add FA using GROW-CDMA-CH, an extension command. At this time, Cdma_Ch_Kind information of the PLD St_CDMA_Ch_Config_ BTS is recorded in another cell. At this time, according to the normal expansion procedure, various information required for the corresponding FA are recorded in each required PLD area.

(3) After all the information is recorded in the PLD, the base station state management block identifies the state of the subcells of the corresponding FA, and records the state with the INS when it is determined that the subcell is normal by the predetermined condition.

(4) After the base station configuration management block is added to the first PLD, the CDMA_CH_KIND type is identified by St_CDMA_Ch_Config_BTS, and when the primary and normal (step 205) are performed in the conventional manner as shown in FIG. 1 (steps 207 to 209) Step), CDMA_CH_KIND is read again to select only other cells. The remaining No_service Tc_Only is not applicable.

(5) A separate CDMA_CHANNEL_LIST for the FA thus detected is created as shown in the lower part of FIG. 3 (step 520). At this time, in the CDMA_CHANNEL_LIST, which is generated separately, the frequency for the FA served by another cell is recorded.

(6) The CDMA_CHANNEL_LIST generated as shown in the lower part of FIG. 3 is delivered to the PCE of the corresponding FA and delivered to the terminal.

(7) Information to be provided to other cells is delivered through the corresponding FA. Referring to FIG. 4, for example, in a cell in which a general base station exists, a normal service is performed in 1,2FA, and a 3FA CDMA_CHANNEL_LIST is delivered in 1FA, and thus 3FA is not provided. However, in another cell, information received through 3FA is converted to 1,2FA by using a repeater and is provided with the same information as a general base station.

(8) After the terminal receives the CDMA_CHANNEL_LIST, the normal service is provided to the corresponding FA from then on. Most terminals operated in a general base station are provided with services by FAs that have been normally operated, and perform various functions. Terminals operated in other cells use services of newly expanded other cell FAs. Will be provided.

(9) Thus, two CDMA_CHANNEL_LISTs are used to continue service with different information.

(10) In order to maintain the continuity of the service, the state management block periodically grasps the subcell state, transfers it to the configuration management block, and updates the library (steps 201 and 202).

(11) In addition, the configuration management block periodically checks the state library, and if the subcell state information is received from the state management block, the configuration management block tries again from the initial check routine (steps 211 to 213).

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention is to smoothly perform a base station operation using a newly added FA, and to simultaneously service two different spaces (cells) by adding an FA to a concept of operating a separate base station. . According to the present invention, in a general base station, a subscriber station is provided with a service by using a FA that is normally operated, and in another cell, a subscriber is provided with the same level of service as a general base station by using a FA of another cell.

If the network is configured using this method, the shadow area can be minimized, and the base station can be efficiently used, and the base station relay line and installation cost can be minimized. In conclusion, the present invention has the effect of enabling two base stations to serve in one base station so that base station operation and network configuration can be more smoothly performed.

Claims (4)

In the cell service method of a cellular communication system, In the first channel (GROW-CDMA-CH), the FA and the separate FA from the existing operation is added, only the data for the extended FA and the service is not performed, and It includes the process of performing a service by activating the corresponding FA in the second channel (ACT-CDMA-CH), And using the modified separate operating frequency band information (CDMA_CHANNEL_LIST) created at the time of FA expansion to simultaneously service two different cells at the same base station. In a method for serving two different cells in a base station of a cellular communication system having a repeater capable of converting the frequency coming from the base station, and using the same RF unit as the base station so that other cells can serve, Process of adding new FA using extension command, A process of the base station state management block identifying the state of each subcell of the corresponding FA; The base station configuration management block identifying the channel type of the corresponding FA; If the channel of the corresponding FA is the primary and normal channel, a process of operating a normal FA by creating an initial or updated operating frequency band information list (CDMA_CHANNEL_LIST) for all FAs and transferring them to the corresponding paging channel; If the channel of the corresponding FA is another cell, a process of operating another cell FA by creating a separate operating frequency band information list for the corresponding FA and transferring it to the corresponding paging channel; Periodically checking the subcell state library and updating the operating frequency band information list according to the check result. The method of claim 2, wherein when the channel of the corresponding FA is a primary channel, an initial operating frequency band information list of all FAs is prepared and transmitted to the corresponding paging channel. The method of claim 2, wherein when the channel of the corresponding FA is a normal channel, an updated operating frequency band information list of all FAs is prepared and transmitted to the corresponding paging channel.