KR102111286B1 - Method and Apparatus for Managing Cell Mode Adaptively - Google Patents

Abstract

An efficient cell mode management device and method are disclosed.
According to an aspect of the present embodiment, in a method of managing a plurality of base stations, a first process of collecting an indicator value indicating the usage capacity for each cell and a cell having the indicator value smaller than a first reference value and the The second process of setting one or more adjacent cells adjacent to a cell whose index value is smaller than the first reference value to have the same cell identity (Cell Identity) and the sum of the index values of a plurality of cells having the same cell identity (Cell Identity). When the value is greater than the second reference value, a base station management method including a third process of setting a different cell identifier in at least one of the plurality of cells is provided.

Description

Method and Apparatus for Managing Cell Mode Adaptively

The present embodiment relates to an apparatus and method capable of adaptively managing cell modes as necessary.

The contents described in this section merely provide background information for this embodiment, and do not constitute a prior art.

Due to the spread of smartphones and the increase in high-quality content and streaming services, the data transmission amount of the uplink/downlink to a wireless terminal has exploded. In addition to improving the performance of the communication system itself to solve this problem, the number of cells having different PCIs (PCIDs) in the same service area is increased to promote capacity increase.

This increase in the number of cells has an advantage in terms of capacity increase, but since the cell-to-cell coverage overlaps, the throughput decreases due to excessive interference and reduction of signal-to-interference and noise ratio (SINR). Will be inevitable. Therefore, the increase in the number of cells within the same area may be suitable for a specific time zone where crowds are crowded, but in a time zone where it is not, the loss of capacity or quality is caused. In addition, as the number of cells increases, the number of times the terminal moves between cells increases, and the number of handover attempts increases. In connection with this, there is a problem in that the amount of control channel traffic increases and the probability of handover failure in a region where a plurality of cells overlap is increased.

This embodiment has a main purpose to provide an apparatus and method for managing cell IDs for efficient control of capacity required according to time zones.

According to an aspect of the present embodiment, in a method of managing a plurality of base stations, a first process of collecting an indicator value indicating the usage capacity for each cell and a cell having the indicator value smaller than a first reference value and the The second process of setting one or more adjacent cells adjacent to a cell whose index value is smaller than the first reference value to have the same cell identity (Cell Identity) and the sum of the index values of a plurality of cells having the same cell identity (Cell Identity). When the value is greater than the second reference value, a base station management method including a third process of setting a different cell identifier in at least one of the plurality of cells is provided.

According to another aspect of the present embodiment, in a method of managing a base station constituting a plurality of cells having different frequencies, a process of collecting an indicator indicating the usage capacity for the plurality of cells and the indicator value When it is smaller than the first reference value, a plurality of cells having a first frequency are set to have the same first cell identifier (Cell Identity), and a plurality of cells having a second frequency are set to have the same second cell identifier to each other. If the process and the index value is greater than the first reference value and less than the second reference value, the plurality of cells having the first frequency are set to have the same first cell identifier, and the plurality of cells having the second frequency Is set to have different cell identifiers, and when the index value is greater than the second reference value, a plurality of cells having the first frequency and a plurality of cells having the second frequency are set to have different cell identifiers. It provides a base station management method characterized in that it comprises a process.

In addition, according to another aspect of the present embodiment, in an apparatus for managing a plurality of base stations, a condition receiving unit for collecting an indicator value indicating the used capacity for each cell and an index value of an arbitrary cell are greater than the first reference value. Mode determination unit for determining whether or not the sum of the index values of a plurality of cells having the same cell identifier (Cell Identity) is greater than the second reference value, and the index value of the random cell is less than or equal to the first reference value When the sum of the index values of the plurality of cells is greater than a second reference value, the cell is set such that the cell and one or more adjacent cells adjacent to the cell have the same cell identifier, or among the plurality of cells. It provides a base station management apparatus comprising a mode change unit for setting a different cell identifier in at least one cell.

As described above, according to the present embodiment, by optimally operating the required capacity according to the time zone, it is possible to bring benefits in terms of capacity and data throughput.

1 is a block diagram schematically showing an efficient cell mode management system according to the present embodiment.
2 is a diagram showing the configuration of each cell mode according to the present embodiment.
3 is a block diagram schematically showing an optimization device according to the present embodiment.
4 is a view for explaining a method in which parameters are reset when a cell operated in a sector mode according to the present embodiment is changed to a copy mode.
5(a) is a flowchart illustrating a method of managing a cell mode by changing a cell operated in a sector mode to a copy mode according to the present embodiment.
5(b) is a flow chart illustrating a method of managing a cell mode by changing a cell operated in a copy mode to a sector mode according to the present embodiment.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known structures or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. Throughout the specification, when a part is'included' or'equipped' a component, this means that other components may be further included rather than excluded, unless otherwise stated. . In addition,'… Terms such as "unit" and "module" mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software.

1 is a block diagram schematically showing an efficient cell ID management system according to the present embodiment.

The cell optimization system according to the present embodiment includes a terminal 110, a network 120, and an optimization device 130. Components included in the cell optimization system are not necessarily limited thereto.

The terminal 110 refers to an electronic device that connects to the network 120 according to a user's command and transmits and receives various data. The terminal 110 includes a tablet PC, a laptop, a personal computer (PC), a smart phone, a personal digital assistant (PDA), and a mobile communication terminal (Mobile). Communication Terminal). The terminal 110 includes a memory for storing a program or protocol for connecting to the network 120, a microprocessor for executing a corresponding program, and calculating and controlling the program.

The network 120 and future implementations of networks such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Global System for Mobile Communications (GSM), Long Term Evolution (LTE), and Evolved Packet Core (EPC) It is a concept that collectively refers to the next generation network and cloud computing network. The network 120 includes a plurality of cells.

Cell refers to cell coverage that can be controlled by one node (eNB) or one base station. A single cell (eNB) or a base station does not necessarily form only one cell coverage, and a single node (eNB) or a base station may form a plurality of cell coverages. Such cells include small cells (Picocell, Femto Cell), and macro cells.

The optimization device 130 means a kind of analysis server. The optimization device 130 analyzes an index value indicating the usage of the terminal 110 for each of a plurality of cells included in the network 120, and optimizes cell coverage by using the index value indicating the analyzed usage It is a device that controls the cell to efficiently change the cell mode according to the index value indicating the analyzed usage. The method of analyzing the indicator value indicating the usage and changing the cell mode accordingly will be described in detail in FIGS. 3 and 4.

2 is a diagram showing the configuration of each cell mode according to the present embodiment.

FIG. 2(a) is a view showing an operation of a sector mode according to the present embodiment. Sector Mode (Sector Mode) refers to a general cell configuration in which a plurality of random cells are configured with different PCI (Physical Cell Identifier). For example, two frequency transmission/reception units (RRUs) connected to one optimization device are configured with different PCIs (PCIs). That is, one cell has x as PCI (PCI), while the other cell has y as PCI (PCI). In this way, a cell mode in which a plurality of random cells are configured with different PCIs (PCIs) is called a sector mode.

2(b) is a diagram illustrating the operation of the copy mode according to the present embodiment. Copy mode refers to a configuration in which a plurality of cells are placed in the same PCI so that cells having the same PCI perform the same transmission/reception operation. For example, two frequency transmitting and receiving devices (RRUs) connected to one optimization device are configured with the same PCI. That is, since both illustrated cells have z as PCI, the two cells operate as copy cells that perform the same operation. In this way, a plurality of cells have the same PCI, and the same transmission/reception operation is called a copy mode.

Since the cells configured in the sector mode operate as separate cells from each other, each cell has a separate capacity. However, due to interference with neighboring cells of each cell, the individual capacity of each cell is reduced by the amount of interference. For example, assuming that one cell in FIG. 2(a) has the capacity A in a situation where there is no interference, in the sector mode, the maximum capacity is 2A', which is reduced by the amount of interference in 2A, not 2A. On the other hand, in the copy mode configuration, since two cells operate as copy cells that perform the same operation, they have the maximum capacity of A equal to the capacity of one cell despite being two cells.

In view of the difference between the two modes in terms of signal to interference and noise ratio (SINR) rather than capacity, in the case of sector mode, cells having different PCI are located adjacently. Because of this, each cell has more interference than in the copy mode, and the signal to interference and noise ratio (SINR) of the terminal is reduced than in the copy mode. That is, if a cell is operated in a sector mode even when the capacity of the cell is not required, the capacity is increased more than necessary, while the signal to interference and noise ratio (SINR) is reduced and data throughput is reduced. This results in a loss in capacity or quality.

3 is a block diagram schematically showing an optimization device according to the present embodiment.

The optimization device 130 according to the present embodiment includes a condition receiving unit 310, a mode determining unit 320, a mode changing unit 330, a parameter setting unit 340, and a protecting unit 350. The components included in the optimization device 130 are not necessarily limited thereto.

Each component included in the optimization device 130 is connected to a communication path connecting a software module or a hardware module inside the device to operate organically with each other. These components communicate using one or more communication buses or signal lines.

The condition receiving unit 310 serves to receive information for determining whether a mode change is necessary from a node or a base station. In order to determine whether a mode change is necessary, an index value indicating usage of all cells is received. Indicator values for usage include weighted sum and traffic load of the average usage of the physical resource block, the average number of concurrent users, and the average usage of the physical resource block and the average number of concurrent users. (Traffic Load). When the current mode of any cell is a copy mode, there are a plurality of cells constituting any cell that is a copy mode. At this time, the condition receiving unit 310 receives information for determining an index value indicating the usage of each cell. The conditions for receiving are the same even when operating at multiple frequencies, such as in the case of a multi-carrier (MC) or a carrier aggregation network. Similarly, an index value indicating the amount of cell usage is received.

Also, the condition receiving unit 310 receives parameters related to the configuration of the cell. The parameters related to the configuration of the cell is a concept including PCI, NR (Neighbor Relation) and cell communication parameters. In addition, the cell communication parameter is a concept including all parameters for a terminal and a base station to communicate in a cell, and includes RSI (RACH Status Identifier, RACH Sequence Index) and TAC (Tracking Area Code).

The mode determining unit 320 serves to determine whether it is necessary to change the cell mode based on the information received from the condition receiving unit 310. The cell group considered for changing between cell modes is basically determined in a set of cells having physically adjacent cell coverage. Based on the information received from the condition receiving unit 310, if an index value indicating the usage of an arbitrary cell is equal to or less than a preset reference value, whether the cell is set as a reference cell and a condition for changing a cell mode of the reference cell to a copy mode is satisfied. Judge. In addition, based on the information received from the condition receiving unit 310, when the sum of the index values indicating the usage of the combined cells by configuring the copy mode is greater than or equal to a preset reference value, the cell is set as the reference cell to set the cell mode of the reference cell to the sector mode. It is determined whether the conditions for changing are satisfied. The detailed determination of the conditions for changing to each mode will be described in FIG. 4.

The mode change unit 330 changes the cell mode of the reference cell according to the result determined by the mode determination unit. For example, when a condition determined by the mode determining unit satisfies a condition for changing a reference cell to a copy mode, adjacent cells adjacent to the reference cell are bundled and changed to a copy mode. Alternatively, if the reference cell corresponding to the copy mode satisfies the condition for changing to the sector mode as determined by the mode determination unit, the new cell is separated from the reference cell to change to the sector mode.

The parameter setting unit 340 serves to change parameters related to the configuration of the cell when changing the cell mode, in order to prevent errors that may occur when the cell mode is changed. When changing the cell mode, procedural errors may occur between existing cells due to changes in parameters related to the cell configuration such as PCI. For example, NR information is managed for each cell for a hand over process, and when a specific PCI disappears or is newly created, there is a possibility that hand over fails due to an error in the NR information. . In order to prevent such an error, when changing the cell mode, it serves to change parameters related to the configuration of the cell. A detailed parameter change method will be described in detail in FIG. 4.

When the mode is changed, the protection unit 350 may cause an instantaneous service interruption due to the parameter reset of the cell in the digital signal processing unit DU, or, in the case of an ongoing call, the call may be canceled due to the parameter change. Can occur. Therefore, when the mode is changed, the protection unit 340 serves to protect the terminal in the cell to be changed. At this time, as a method of protecting a terminal, as a method for protecting a terminal in a target cell to change a mode, a method of allowing handover to occur naturally to an adjacent cell by gradually reducing the power of a cell to change the mode Includes. Alternatively, when a multi-carrier (MC) or carrier aggregation network is configured, handover occurs at a frequency that does not change the mode by using inter-frequency handover (Inter-Frequency Hand Over). Method.

4 is a diagram for explaining a method in which parameters are reset when a cell operated in a sector mode according to the present embodiment is changed to a copy mode.

The Automatic Neighbor Relation (ANR) function is provided to ease the need for operators to manually manage NRs. The ANR function resides at the node or base station and can contact other components. One function of the ANR function may be to manage a conceptual NRT (Neighbor Relation Table). In addition, the ANR function can operate to identify new neighbors and add them to the NRT. Other functions may include a neighbor removal function to remove outdated NRs. Existing NR from a reference cell to an adjacent cell is a node or a base station that controls the reference cell, the ECGI (E-UTRAN Cell Global Identifier, E-UTRAN Cell Global Identifier)/CGI (Cell Global Identifier) of the neighboring cell. And that it knows the PCI and has an entry in the NRT for the reference cell that identifies the adjacent cell. A node or base station can maintain an NRT for each of its cells. For each NR, the NRT includes a Target Cell Identifier (TCI) that identifies adjacent cells. For E-UTRN, TCI can correspond to ECGI and PCI of neighboring cells.

NR means an adjacent cell managed by a node or a base station in order to handover the corresponding terminal with only the PCI reported from the measurement report of the terminal. The NR consists of a set of such adjacent cells. The node or the base station must properly manage the NR to ensure the normal procedure of handover.

NR is composed of items such as TCI, ECGI, PCI, No Remove, No HO, and No X2. The NR with the No Remove item checked means that the node or the base station cannot remove it. NR with No HO checked means that it cannot be used for handover purposes. The NR where the No X2 item is checked means that X2 is not set toward the adjacent cell.

For example, cell 1 has PCI1, RSI1 (RACH status identifier, RACH Sequence Index), TAC1 (tracking area code) and NR1, and cell 2 is PCI2, RSI2 (RACH status identifier, RACH Sequence Index), It is assumed to have TAC2 (Tracking Area Code) and NR2.

When the cell operated in the sector mode is changed to the copy mode, that is, when the cell 1 and the cell 2, which are the existing cells, are combined to form the cell 1', the parameter setting method is as follows. ① NR is set as follows. Iv) The cell identifier including the combined PCI and TCI of the cell has the cell identifier of the existing reference cell. This is to maintain the relationship with the existing surrounding cells. For example, the cell identifier of cell 1'has the cell identifier of cell 1. Ii) In the cell before the mode change, information indicating each other between cells is not included in the new cell. For example, in FIG. 4, cell 1 has information on cell 2, cell 2 has information on cell 1, and it can be seen that cell 1'does not include information on cell 1 and cell 2. have. Iii) In the cell before the mode change, information on other cells that have the same information is merged into one to include the same information in the new cell. For example, in FIG. 4, since cells 1 and 2 have the same information on TCI A, the information on TCI A is included in cell 1'. Iii) Information that has only one cell in the cell before the mode change is included in the new cell as it is. For example, in FIG. 4, information on TCI B only in cell 1 or information on TCI D only in cell 2 is included in cell 1'. Iv) If the cell before the mode change contains different information between cells for the same TCI, the new cell does not include the information about the TCI. For example, in FIG. 4, since cell 1 and cell 2 have different information for TCI C, it can be seen that cell 1'does not include information about TCI C. In FIG. 4, for convenience, No Remove, No HO, and No X2 have been described for resetting the NR of a new cell, but the present invention is not limited thereto. The PCI or ECGI items included in the NRT may also be divided into the same cases and reset the PCI or ECGI items when they are different, such as in the case of No Remove, No HO and No X2. ② The RSI of the new cell is taken as the RSI value of the cell with the higher RACH success rate among the RSIs of the cells before the mode change. ③ The TAC of the new cell is set to the TAC value if the TAC values of the cells before the mode change are the same, and if different, the TAC value of the higher paging success rate is set.

When two cells are merged by configuring a copy mode, a parameter setting method of adjacent cells of a new cell is as follows. The information about the PCI of the cell 2 in the NR of the adjacent cell becomes unnecessary information. Accordingly, elements of the NR corresponding to the PCI of the cell 2 are deleted from the NR information of adjacent cells included in the NR of the cell 1 and the cell 2.

When configuring the copy mode, the case where two cells are combined was described with respect to a parameter setting method, but it is not necessarily limited to the case where the two cells are combined. When three or more cells are combined, the two cells are combined in the previous process, and the combined new cells are regarded as one cell again, and the previous process is performed with other cells. In this way, it can be applied to three or more cells.

The method of setting parameters when changing the combined cells by configuring the copy mode to the sector mode is as follows. As a cell constituting the copy mode, when cell 1'where multiple cells are combined is divided into two cells, cell 1 and cell 2 for convenience, to make sector mode, ① Basically, PCI2, RSI2, TAC2, and PCI2 of cell 2 before merging The same applies when NR2 is stored in advance and cells are separated. ② However, as two cells are merged, the information of the surrounding cells changes, which may cause errors. Therefore, when an error occurs, the information of cell 2 is interlocked with SON (Self Organizing Network) and, as in the existing procedure to follow when constructing a new cell, optimal PCI, RSI, TAC with less collisions with nearby PCIs And NR allocation method.

If the existing cell is divided into two cells by configuring the sector mode, the parameter setting method of adjacent cells of the separated cell is as follows. When two cells are divided, since the same shape as a new cell is added, when an existing new cell is added, the parameter setting method of an adjacent cell is followed.

When configuring the sector mode, a case in which two cells are separated has been described with respect to a parameter setting method, but it is not necessarily limited to the case where the two cells are separated. Even when separated into three or more cells, it is possible to separate into three or more cells by first going through the process of separating one cell into two and then going through the process of separating any one of the separated cells into two again.

The method of changing the cell mode is somewhat different when operating at multiple frequencies, such as when having a configuration of a multi-carrier (MC) or a carrier aggregation network. For example, assuming that two frequencies are operated, if the required capacity of the cell received by the condition receiving unit is greater than a second reference value that is arbitrarily set, all cells using the respective frequencies are operated in the sector mode. When the required capacity of the cell received by the condition receiving unit is smaller than the second reference value that is arbitrarily set and greater than the first reference value, cells using one frequency among the two frequencies are bundled and operated in a copy mode and the other frequency is used. Cells operate in sector mode. When the required capacity of the cell received by the condition receiving unit is smaller than the first reference value that is arbitrarily set, adjacent cells of the cells using the respective frequencies may be bundled and operated in a copy mode. The copy mode or sector mode procedure and the cell selection method may be performed according to the procedure described with reference to FIG. 3. In the description, the case where the two frequencies are operated for convenience is described, but the present invention is not limited thereto. Also, since the description is made with two frequencies, the first reference value and the second reference value are set, but when there are two or more frequencies, two or more reference values may be set.

5(a) is a flowchart illustrating a method of managing a cell mode by changing a cell operated in a sector mode to a copy mode according to the present embodiment.

Determines whether or not a sector mode based on the index value indicating the amount of the cell, C _i group held in the reference value R or less than the small value of α · _C R _C is set to operate as a (S510). At this time, α is a value having a range greater than 0 and less than 1, and is determined by the designer.

When the index value indicating the amount of usage of the reference cell C _i is maintained at α·R _C or less, the sum of the index value indicating the amount of usage of the reference cell C _i and the amount of the random cell C _j does not exceed the reference value R _C C _j is selected (S520). At this time, any cell C _j is a cell having an adjacent cell coverage adjacent to the reference cell, and is the maximum so that the sum of the index values indicating the usage of the reference cell and the random cell is maximum without exceeding the reference value R _C Select any number of cells C _j . When the index value indicating the amount of usage of the reference cell C _i is α·R _C or less, when the sum of the index value indicating the amount of C _j and the index value indicating the amount of C _i does not exceed R _C , C _j is copied mode Group G _i ={C _i , C _j } can be configured by selecting a target cell that can be grouped with. If, for no more than an agreement R _C of the used capacity of the indicator value and C _j representing the amount of C _i is C _i and by specifying additional cells to bind the C _k adjacent to C _j in the copy mode, G _i = {C _i , C _j , C _k }. In this case, the sum of the index values representing the amount of C _i , C _j and C _k should not exceed R _C. In this way, the maximum number of cells for grouping in copy mode is organized into groups.

The reference cell C _i and the adjacent cell C _j adjacent to the reference cell are bundled and converted into a copy mode, which is defined as a new reference cell C _i ′ (S530 ).

The parameters related to the cell configuration of adjacent cells of the new reference cells C _i ′ and C _i ′ are reset (S540 ).

If the index value indicating the usage amount of the reference cell C _i is not maintained below α·R _C , the current cell mode is maintained (S550).

5(b) is a flowchart illustrating a method of managing a cell mode by changing the combined cells by configuring a copy mode according to the present embodiment to a sector mode. The required capacity of the cells that were bundled and operated in the copy mode increases, and when some of the cells need to be separated into the sector mode, the mode is changed to the sector mode.

By configuring the copy mode, it is determined whether the sum of the indicator values representing the usage of the combined cells is maintained at a value greater than or equal to a predetermined reference value R _{C (} β·R _C ) (S560 ). At this time, β is a number having a range greater than 1, and is determined by the designer. At this time, the combined cells are configured to set the combined cells as the reference cell C _i .

When the index value indicating the usage of the reference cell C _i is maintained at β·R _C or higher, the frequency transmission/reception providing service to the most terminals among the frequency transmission/reception devices (RRUs) of C _i operated in the copy mode The device RRU is selected and separated by a new cell C _j (S570).

The maximum number of cells that can be separated is separated until the index value indicating the usage of the reference cell C _i has a value less than R _C (S580). Even after separating C _j by the previous S460 process, if the index value indicating the usage of C _i is β·R _C or more, and there is a frequency transmitting/receiving unit (RRU) to be additionally separated, the cell is newly selected by C _k and separated do. In this way, the maximum number of cells that can be separated is separated until the index value indicating the usage of the reference cell C _i has a value less than R _C.

The parameters related to the configuration of cells of adjacent cells such as cells C _j and C _j separated from the reference cell C _i are reset (S590).

When the index value indicating the usage amount of the reference cell C _i is not maintained above β·R _C , the current cell mode is maintained (S600).

In this way, the cell mode is changed by determining whether to change the reference cell and the adjacent cell to the copy mode or the sector mode.

In FIG. 5, it is described that the processes S510 to S600 are sequentially executed, but this is merely illustrative of the technical idea of an embodiment of the present invention. In other words, a person having ordinary knowledge in the technical field to which one embodiment of the present invention pertains may execute or change the order described in FIG. 6 without departing from the essential characteristics of one embodiment of the present invention, or one of the processes S510 to S600 Since the above process can be applied in various modifications and variations by executing in parallel, FIG. 5 is not limited to the time series order.

Meanwhile, the processes illustrated in FIG. 5 may be implemented as computer readable codes on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data readable by a computer system is stored. That is, the computer-readable recording medium includes magnetic storage media (eg, ROM, floppy disk, hard disk, etc.), optical reading media (eg, CD-ROM, DVD, etc.) and carrier waves (eg, the Internet). Storage). The computer-readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

The above description is merely illustrative of the technical idea of the present embodiment, and those skilled in the art to which this embodiment belongs may be capable of various modifications and variations without departing from the essential characteristics of the present embodiment. Therefore, the present embodiments are not intended to limit the technical spirit of the present embodiment, but to explain, and the scope of the technical spirit of the present embodiment is not limited by these embodiments. The protection scope of the present embodiment should be interpreted by the claims below, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present embodiment.

110: terminal 120: network
130: optimization device 210: frequency transmitting and receiving device
310: condition receiving unit 320: mode determining unit
330: mode change unit 340: parameter setting unit
350: protector

Claims (11)

In the method of managing a plurality of base stations in the base station management apparatus,
A first process of collecting an indicator indicating an amount of use for each cell;
A second process of setting the cell having the index value smaller than the first reference value and one or more adjacent cells adjacent to the cell having the index value smaller than the first reference value to have the same first cell identifier (Cell Identity); And
When the sum of the index values of the plurality of cells having the same second cell identifier is greater than the second reference value, setting the at least one cell among the plurality of cells to have a third cell identifier different from the second cell identifier Course 3
In the second process, in resetting the neighbor relation (NR) of cells set to have the same cell identifier, the reset NR is the cell identifier of the neighboring cell among the NRs of cells whose index value is less than the first reference value. And information excluding items corresponding to the first cell identifier among NRs of the neighboring cells and information excluding items corresponding to the base station. ◈ Claim 2 was abandoned when payment of the registration fee was set.◈ According to claim 1,
The second process,
Within a range in which the sum of the index values of the cells having the first cell identifier does not exceed the third reference value, the cell having the index value smaller than the first reference value and the neighboring cell have the first cell identifier. Base station management method characterized in that the. ◈ Claim 3 was abandoned when payment of the set registration fee was made.◈ According to claim 1,
The third process,
A base station management method characterized in that the third cell identifier is set to a cell having the largest index value among the plurality of cells until the sum of the index values of the plurality of cells is equal to or less than a third reference value. ◈ Claim 4 was abandoned when payment of the set registration fee was made.◈ According to claim 1,
The first cell identifier,
A base station management method, characterized in that the index value is a cell identifier of a cell smaller than the first reference value. delete In the method of managing a plurality of base stations in the base station management apparatus,
A first process of collecting an indicator indicating an amount of use for each cell;
A second process of setting the cell having the index value smaller than the first reference value and one or more adjacent cells adjacent to the cell having the index value smaller than the first reference value to have the same first cell identifier (Cell Identity); And
When the sum of the index values of the plurality of cells having the same second cell identifier is greater than the second reference value, setting the at least one cell among the plurality of cells to have a third cell identifier different from the second cell identifier Course 3
Including,
The second process,
Resetting the RSI (RACH Sequence Index) of the cells set to have the same cell identifier to the RSI value of a cell having the index value smaller than a first reference value and a cell having a higher RACH success rate among the adjacent cells; And
And resetting the TAC (Tracking Area Code) of the cells set to have the same cell identifier to the TAC of the cell having the index value smaller than the first reference value and a cell having a high paging success rate among the adjacent cells. Base station management method. In the method of managing a plurality of base stations in the base station management apparatus,
A first process of collecting an indicator indicating an amount of use for each cell;
A second process of setting the cell having the index value less than the first reference value and one or more adjacent cells adjacent to the cell having the index value less than the first reference value to have the same first cell identifier (Cell Identity); And
When the sum of the index values of the plurality of cells having the same second cell identifier is greater than the second reference value, setting the at least one cell among the plurality of cells to have a third cell identifier different from the second cell identifier Course 3
Including, but in the second step, the base station management method characterized in that the NR value corresponding to the cell identifier of the neighboring cell is deleted from the NR values of the cells included in the NR information of the cells set to have the same cell identifier. A method for managing a base station constituting a plurality of cells having different frequencies from each other in a base station management apparatus,
Collecting an indicator indicating the usage capacity for the plurality of cells;
When the index value is smaller than the first reference value, a plurality of cells having a first frequency are set to have the same first cell identifier (Cell Identity), and a plurality of cells having a second frequency are identical to each other. Setting to have a;
When the index value is greater than the first reference value and less than the second reference value, the plurality of cells having the first frequency are set to have the same first cell identifier, and the plurality of cells having the second frequency are different from each other. Setting to have a cell identifier; And
When the index value is greater than the second reference value, a process of setting the plurality of cells having the first frequency and the plurality of cells having the second frequency to have different cell identifiers.
Base station management method comprising a. In the apparatus for managing a plurality of base stations,
Condition receiving unit for collecting an indicator (Indicator) indicating the usage capacity for each cell;
A mode determination unit that determines whether an index value of an arbitrary cell is smaller than a first reference value or whether a sum of index values of a plurality of cells having the same first cell identifier (Cell Identity) is greater than a second reference value;
When the index value of the random cell is smaller than the first reference value, the random cell and one or more adjacent cells adjacent to the random cell are set to have the same second cell identifier, and the plurality of cells A mode change unit configured to set a third cell identifier different from a first cell identifier in at least one of the plurality of cells when the sum of the index values is greater than a second reference value; And
When the arbitrary cell and one or more adjacent cells adjacent to the random cell are set to have the same cell identifier, the cell identifiers of the cells set to have the same cell identifier and the one or more cells adjacent to the cells, NR (neighbor relation) ), RSI (RACH Sequence Index) and TAC (Tracking Area Code) at least one of the parameter setting unit to change
Base station management apparatus comprising a. delete In the apparatus for managing a plurality of base stations,
Condition receiving unit for collecting an indicator (Indicator) indicating the usage capacity for each cell;
A mode determination unit that determines whether an index value of an arbitrary cell is smaller than a first reference value or whether a sum of index values of a plurality of cells having the same first cell identifier (Cell Identity) is greater than a second reference value;
When the index value of the random cell is smaller than the first reference value, the random cell and one or more adjacent cells adjacent to the random cell are set to have the same second cell identifier, and the plurality of cells A mode change unit configured to set a third cell identifier different from a first cell identifier in at least one of the plurality of cells when the sum of the index values is greater than a second reference value; And
When a cell identifier different from a cell identifier currently possessed by the plurality of cells is set in at least one cell among the plurality of cells, cell identifiers of cells adjacent to cells having different cell identifiers and cells configured to have different cell identifiers , NR, RSI and TAC, the base station management apparatus comprising a parameter setting unit for changing at least one of.

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