KR101636489B1 - Region domain configuration device - Google Patents

Abstract

Disclosed is a regional domain configuration device capable of realizing an optimized regional domain configuration method, considering a traffic flow in a mobile communication network in a broadcast service environment (e.g. eMBMS) adopting a regional domain technique (e.g. MBSFN). According to the present invention, the regional domain configuration device comprises: a cell checking unit; and a regional domain configuration unit.

Description

A local domain setting device {REGION DOMAIN CONFIGURATION DEVICE}

The present invention relates to a local domain setting apparatus, and more particularly, to an apparatus and method for setting an optimal local domain considering a traffic movement in a mobile communication network in a broadcast service (eMBMS) environment adopting a local domain (e.g., MBSFN) To a technique capable of realizing the above.

Recently, an existing broadcast service (e.g., MBMS, Multimedia Broadcast / Multicast Service) technology is applied to a mobile communication network (LTE network) to transmit data (e.g., broadcast content) to a user terminal through a base station A broadcast service (eMBMS: evolved-MBMS) has emerged.

In this eMBMS, a local domain (e.g., MBSFN, Multicast-Broadcast Single-Frequency Network) technology is adopted to increase the efficiency of mobile communication network, that is, LTE network resource utilization and QoE (Quality of Experience) .

When the MBSFN technology is employed in the eMBMS environment, since the eNBs belonging to one MBSFN provide broadcast contents using the same frequency band, there is an advantage that interference is minimized and multi-path gain can be obtained in the user terminal.

However, until now, there is no specific scheme for setting up the MBSFN in the eMBMS environment employing the MBSFN technology, and the MBSFN is simply set based on the location and signal strength of the eNB.

Accordingly, in the present invention, a method of setting an optimal local domain considering e-MBMS environment employing MBSFN technology considering traffic movement in a mobile communication network is proposed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a mobile communication system and a mobile communication method, in which, in a broadcast service (eMBMS) environment employing a local domain (e.g., MBSFN) And to provide a local domain setting apparatus capable of realizing an optimum local domain setting scheme considering.

According to a first aspect of the present invention, there is provided a local domain setting apparatus comprising: a cell identifying unit for identifying a plurality of cells that can be included in a local domain in association with a local domain based broadcast service; And a local domain setting unit that sets, in the plurality of cells, a cell sharing a base station module with a predetermined cell set as the local domain among the candidate cells set as the local domain, to the local domain.

The specific cell may be a cell in which a terminal capable of using the broadcast service exists only through a single cell among the plurality of cells.

Preferably, the candidate cell may be a cell other than the specific cell among the plurality of cells.

Preferably, the candidate cell may be a cell in which only the terminal capable of using the broadcast service exists in the plurality of cells through two or more cells.

Preferably, the local domain setting unit sets the local domain to a cell sharing the base station module with the specific cell among the candidate cells, and sets the local domain to a cell that does not share the base station module with the specific cell , If the terminal can not use the broadcast service unless it is set as the local domain, it can be set as the local domain.

Thus, according to the local domain setting apparatus of the present invention, by implementing an optimal local domain setting scheme considering a traffic movement in the mobile communication network in a broadcast service (eMBMS) environment employing a local domain (e.g., MBSFN) , The effect of reducing the traffic load in the mobile communication network can be obtained, and further, the capacity consumption of the CDN server can be reduced.

1 is an exemplary diagram illustrating a local domain (MBSFN) technique employed in an eMBMS environment.
2 is a block diagram of a system including a local domain setting apparatus according to a preferred embodiment of the present invention.
3 is a block diagram illustrating a configuration of a local domain setting apparatus according to a preferred embodiment of the present invention.
4 is a flowchart illustrating an operation method of a local domain setting apparatus according to a preferred embodiment of the present invention.
5 is an exemplary diagram illustrating an example in which a local domain is set according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The present invention relates to a method for setting up a local domain, i.e. MBSFN, in a broadcast service (e. G. EMBMS) environment employing a local domain (e.g. MBSFN) technology.

The broadcast service to which the present invention is applied, that is, the e-MBMS (Evolved-MBMS), applies the existing MBMS (Multimedia Broadcast / Multicast Service) technology to a mobile communication network And provides data (e.g., broadcast content) to the terminal.

In this eMBMS, a local domain (e.g., MBSFN, Multicast-Broadcast Single-Frequency Network) technology is adopted to increase the efficiency of mobile communication network, that is, LTE network resource utilization and QoE (Quality of Experience) .

Referring to FIG. 1, a description of a local domain (MBSFN) technology in an eMBMS environment is as follows. Here, one hexagonal cell represents an area covered by one eNB.

As shown in FIG. 1, in an eMBMS environment employing MBSFN technology, a plurality of cells may be set as one MBSFN to manage a plurality of MBSFNs (e.g., MBSFN 1,2,3). At this time, different frequency bands are used for each MBSFN, and eNBs belonging to one MBSFN, that is, cells use the same frequency band.

As described above, when the MBSFN technology is employed in the eMBMS environment, eNBs belonging to one MBSFN, i.e., cells provide broadcast contents using the same frequency band, so that interference is minimized in the user terminal and multi- .

However, until now, there is no specific scheme for setting up the MBSFN in the eMBMS environment employing the MBSFN technology, and the MBSFN is simply set based on the location and signal strength of the eNB.

Accordingly, in the present invention, a method of setting an optimal local domain considering e-MBMS environment employing MBSFN technology considering traffic movement in a mobile communication network is proposed.

First, a system including the local domain setting apparatus of the present invention will be briefly described with reference to FIG.

As shown in FIG. 2, a system including a local domain setting apparatus according to a preferred embodiment of the present invention includes a plurality of base stations (eNBs) 10 and a local domain setting apparatus 100 of the present invention.

At this time, each of the plurality of eNBs 10 participates in providing the broadcast service or the eMBMS to which the present invention is applied, and receives from the content server 20 a Broadcast Multicast Service Center (BM-SC), an MBMS-GW It is possible to provide an eMBMS to a user, that is, the terminal 1, by providing the terminal 1 with data (e.g., broadcast content) provided through a mobile communication network, that is, an LTE network.

At this time, a plurality of eNBs 10 may form one cell of one eNB, and one eNB may form two or more cells.

In the conventional general eNB in which the configurations of the base station module (DU) and the radio module (RU: Remote Unit) are integrated, it can be assumed that one eNB forms one cell for convenience of explanation.

Meanwhile, in the conventional general eNB structure in which the DU and RU configurations are integrated, a structure of an eNB (hereinafter referred to as a separate type eNB) in which DU and RU are separated from each other and installed at a remote location has emerged.

In the case of such a detached eNB, it can be assumed that one (separate type) eNB forms two or more cells based on a structure of connecting one DU and two or more RUs.

Of course, in the case of a separate eNB, since the DUs of the separate eNBs can be installed in a physically adjacent space (for example, a data center) and data can be shared with each other, , It may be assumed that one (virtual) eNB forms two or more cells based on the RUs connected to them.

In particular, in the system including the local domain setting apparatus according to the preferred embodiment of the present invention, it is preferable that the plurality of eNBs 10 include an environment in which a plurality of the above-described separated eNBs are included.

The local domain setting apparatus 100 includes a plurality of eNBs 10, a plurality of eNBs 10, a plurality of eNBs 10, and a plurality of eNBs 10, )to be.

Although not shown in the system shown in FIG. 2, the eNB participating in providing the eMBMS is managed by a device called MCE (Multi-Cell / Multicast Coordination Entity) on the mobile communication network, that is, the LTE network. Since the method is an existing management method, detailed description of the management method will be omitted.

Here, the local domain setting apparatus 100 of the present invention may be a separate apparatus that cooperates with the above-described MCE, and may be the same apparatus as the MCE, or functions of the local domain setting apparatus 100 described later in the MCE may be logical It can be in the form appended with functional elements.

Hereinafter, the configuration of a local domain setting apparatus according to a preferred embodiment of the present invention will be described in detail with reference to FIG.

The local domain setting apparatus 100 according to the present invention includes a cell checking unit 110 for identifying a plurality of cells that can be included in the local domain in relation to a broadcast service based on a local domain, And a local domain setting unit 120 for preferentially setting a cell sharing a base station module with a specific cell set as the local domain among the candidate cells set as the local domain to the local domain.

Hereinafter, for convenience of description, an embodiment for setting MBSFN 1 in the local domain setting apparatus 100 of the present invention will be described with reference to MBSFN 1 as a local domain.

The cell identifying unit 110 identifies a plurality of cells that can be included in the local domain, that is, MBSFN 1, with respect to the broadcast service based on the local domain, that is, the eMBMS.

In this case, the plurality of cells are cells in which the UEs intending to use the local domain based broadcast service, i.e., the eMBMS are present. In other words, among the plurality of eNBs 10, the cells formed by the eNB participating in eMBMS provision it means.

For example, as shown in FIG. 5, a cell formed by an eNB participating in an eMBMS among a plurality of eNBs 10 in which a UE to use an eMBMS exists may be cells 1 to 10 .

In this case, the cell check unit 110 will check cells 1 to 10 as a plurality of cells that can be included in the local domain, i.e., MBSFN 1.

The local domain setting unit 120 sets a cell sharing a base station module with a specific cell preset as MBSFN 1 among the candidate cells set as a local domain, i.e., MBSFN 1, to MBSFN 1 in a plurality of cells checked by the cell check unit 110 First, set it.

That is, the local domain setting unit 120 sets a plurality of cells identified by the cell identifying unit 110 as a local domain (MBSFN 1) according to the local domain setting scheme according to the present invention.

A method of setting the local domain, i.e., MBSFN 1, in the local domain setting unit 120 will be described in more detail as follows.

First, according to the first embodiment, a candidate cell means a cell other than the above-mentioned specific cell among a plurality of cells, for example, cells 1 to 10 identified by the cell identifying unit 110.

The local domain setting unit 120 sets a specific cell and a base station module among the remaining cells excluding the specific cell set as the candidate cell, i.e., MBSFN 1, in a plurality of cells (e.g., cells 1 to 10) In other words, the cell sharing DU can be set to MBSFN 1 first.

At this time, it is preferable that a specific cell is a cell in which a UE capable of using an eMBMS exists only through a single cell among a plurality of cells checked by the cell checking unit 110. [

More specifically, the area-domain setting unit 120 first identifies a cell in which a UE capable of using an eMBMS exists among a plurality of cells (e.g., cells 1 to 10) identified by the cell identifying unit 110 through a single cell do.

For example, the local domain setting unit 120 may check the list of terminals that want to use the eMBMS based on the local domain, and if there is at least one terminal that can use the eMBMS only through a single cell based on the terminal list You can see the cell.

At this time, the local domain setup unit 120 confirms a list of terminals that intend to use the eMBMS based on the local domain through signaling to the mobile communication network, that is, the Mobile Mobility Entity (MME) in the LTE network and a plurality of eNBs It is possible.

Here, a terminal capable of using an eMBMS only through a single cell means a terminal located in a central region of the cell and unable to receive a valid signal from another adjacent cell.

Therefore, based on the terminal list, the local domain setting unit 120 can identify a cell in which there is at least one terminal that can use the eMBMS only through a single cell, and sets the checked cell to MBSFN 1 first.

As described above, a cell having a priority set to MBSFN 1, that is, a cell having at least one UE capable of using an eMBMS only through a single cell is a specific cell predefined by MBSFN 1 described above.

For example, it is assumed that cells 1, 2, 3, 4, 6, and 9 among the plurality of cells, that is, cells 1 to 10 shown in FIG. 5, are specific cells set as MBSFN 1 first.

Then, the local domain setting unit 120 sets the local cells of the cells 1, 2, 3, 4, 6, 9 excluding the specific cells 1, 2, 3, 4, Among cells 8 and 10, a cell sharing a specific cell 1, 2, 3, 4, 6, 9 and DU can be set to MBSFN 1 first.

For example, in the example shown in FIG. 5, cells 1, 3, and 4 formed by eNBs with (disjoint or virtual) DU1 and 3 RUs connected share a mutual DU1 and DU2 and 2 Cells 2 and 5 formed by eNBs with two RUs connected share the mutual DU2, and cells 6 and 7 formed by (detached or virtualized) DU6 and two RU-connected eNBs share mutual DU6.

Each of the cells 8, 9, and 10 may be a cell formed by an existing conventional eNB in which the configurations of DU and RU are integrated, or a cell formed by an eNB to which a detached DU and one RU are connected.

5, if the cells 1, 2, 3, 4, 6, and 9 among the cells 1 to 10 are a specific cell set to MBSFN 1 first, the local domain setting unit 120 sets a candidate cell 3, 4, 6, and 9 among the cells 5, 7, 8, and 10 and the cells 5 and 7 sharing the DU, The cells 5 and 7 can be first set to MBSFN 1 rather than the cells 8 and 10 that do not share the same cell.

According to the first embodiment of the present invention, among the plurality of cells that can be included in the local domain (MBSFN 1), a cell in which at least one terminal capable of using the eMBMS through a single cell exists is first set to MBSFN 1 , MBSFN 1 can be set in such a manner that a cell shared with DU and a cell set with priority as MBSFN 1 are set to MBSFN 1.

Meanwhile, according to the second embodiment, it is preferable that the candidate cell is a cell in which only the UE capable of using the eMBMS is present through two or more cells among a plurality of cells identified by the cell identifying unit 110, for example, cells 1 to 10.

The local domain setting unit 120 sets the local domain setting unit 120 to select cells among the cells existing only in the eBMS using the candidate cells, i.e., two or more cells, in the cells identified by the cell identifying unit 110, Cells sharing the cell and DU can be set to MBSFN 1 first.

In this case, it is preferable that the specific cell in the second embodiment is a cell in which a UE capable of using the eMBMS exists only through a single cell out of a plurality of cells identified by the cell identifying unit 110, as in the first embodiment described above.

More specifically, the area-domain setting unit 120 first identifies a cell in which a UE capable of using an eMBMS exists among a plurality of cells (e.g., cells 1 to 10) identified by the cell identifying unit 110 through a single cell do.

For example, the local domain setting unit 120 may check the list of terminals that want to use the eMBMS based on the local domain, and based on the list of terminals, there may be one or more terminals that can use the eMBMS only through a single cell , And sets the checked cell to the local domain, that is, MBSFN 1 first.

As described above, a cell having a priority set to MBSFN 1, that is, a cell having at least one UE capable of using eMBMS only through a single cell is a specific cell set in MBSFN 1 described above, 10, it is assumed that cells 1, 2, 3, 4, 6, and 9 are specific cells set to MBSFN 1 first.

After that, the local domain setting unit 120 identifies a candidate cell in which there exists only a terminal capable of using an eMBMS through two or more cells in a plurality of cells, for example, cells 1 to 10.

At this time, among the plurality of cells, that is, cells 1 to 10, cells 1, 2, 3, 4, 6, and 9 in which any one of the terminals capable of using eMBMS through a single cell exists can use eMBMS through two or more cells It is obvious that the mobile terminal will be excluded from the process of identifying a cell.

As a result, the local domain setting unit 120 sets the number of cells in the cells 5, 7, 8, and 10 other than the cells 1, 2, 3, 4, 6, a candidate cell in which only a UE capable of using the eMBMS is present will be checked.

Here, a terminal capable of using eMBMS through two or more cells means a terminal located in a boundary region between cells and capable of receiving a valid signal from two or more adjacent cells.

At this time, as shown in FIG. 5, a terminal exists in a border area between the cell 5 and the cell 8, a terminal exists in the border area between the cell 7 and the cell 10, and a terminal exists in the border area between the cell 8 and the cell 9. [ .

In this case, the local domain setting unit 120 can identify the cells 5, 7, 8, and 10 as candidate cells that exist only in the eMBMS-enabled terminal through two or more cells.

The local domain setting unit 120 sets the cell sharing the DU among the candidate cells 5, 7, 8, and 10 identified as described above to the specific cells 1, 2, 3, 4, 6, 9 set in MBSFN 1, Cells 1, 2, 3, 4, 6, and 9 can be set to MBSFN 1 more than cells that do not share DU.

That is, the area-domain setting unit 120 sets the cell IDs of cells 1, 2, 3, 4, 6, and 9 previously set to MBSFN 1 among the candidate cells 5, Can be set to MBSFN 1.

5, if the cells 1, 2, 3, 4, 6, and 9 among the cells 1 to 10 are a specific cell set to MBSFN 1 first, then the local domain setting unit 120 sets two or more cells 1, 2, 3, 4, 6, and 9 among the candidate cells 5, 7, 8, and 10 having only the UE capable of using eMBMS through the MBSFN 1 .

On the other hand, the local domain setting unit 120 sets a specific cell 1, 2, 3, 4, 6, 9 among the candidate cells 5, 7, 8, 10 that exist only in the terminal capable of using eMBMS through two or more cells For the cells 8 and 10 which do not share the eNBs, it is determined whether there exists a UE that can not use the eMBMS unless it is set to the local domain, that is, MBSFN 1.

The local domain setting unit 120 sets the MBSFN 1 to the MBSFN 1 when there is a terminal that can not use the eMBMS unless the MBSFN 1 is set in the cells 8 and 10. If the MBSFN 1 is not set to the MBSFN 1, If there is no terminal that does not exist, set it to MBSFN 1.

According to the second embodiment of the present invention, among the plurality of cells that can be included in the local domain (MBSFN 1), a cell in which at least one terminal capable of using the eMBMS through a single cell exists is first set to MBSFN 1 For a cell in which only eNBMS-capable UEs exist in two or more cells, cells sharing the DU and MBSFN 1 cells set as MBSFN 1 and cells in which eMBMS can not be used are set as MBSFN 1, MBSFN 1 can be set by setting the MBSFN 1.

Herein, information on which cell among the plurality of cells 1 to 10 is shared is managed by the local domain setting apparatus 100 of the present invention in a provider (server) in which a plurality of cells 1 to 10 are arranged Cell management information.

As a result, the local domain setting method according to the present invention sets a cell sharing a DU with a cell set as an MBSFN among the candidate cells set as a local domain (MBSFN) as an MBSFN, The result of setting MBSFN mainly can be derived.

(E. G., Broadcast content) from the content server 20 via the BM-SC, the MBMS-GW, and the mobile communication network, that is, the LTE network, to the terminal 1 when providing MBSFN- (E.g., broadcast content) moves from the content server 20 to each cell in the process of providing the LTE network, traffic load in the LTE network must be increased.

However, when providing an MBSFN-based eMBMS through cells sharing DU, data (e.g., broadcast content) is provided from the content server 20 to the terminal 1 via the BM-SC, the MBMS-GW and the LTE network (E.g., broadcast content) moves from the content server 20 to the DU terminal and data (e.g., broadcast content) only moves from the DU terminal to each cell terminal, the traffic in the LTE network The load can be reduced.

That is, the local domain setting apparatus 100 according to the present invention can reduce the traffic load in the LTE network in the eMBMS environment employing the MBSFN technology by setting the MBSFN on the cells sharing the DU when setting the MBSFN And an effect of realizing an optimal local domain setting scheme is derived.

Meanwhile, due to the development of mobile CDN (Contents Delivery Network) technology, the position of the CDN server in the mobile communication network has continued to move closer to the user. Recently, in the eNB (DU) Technology to locate the CDN server to connect.

The CDN technology is a service for quickly and stably transmitting a large amount of data (for example, broadcast content) to a user. It replaces a large amount of data (for example, broadcast content) in advance in the cache of the CDN server, For example, broadcast content) to the user.

Therefore, it can be assumed that a plurality of eNBs 10 participating in the MBSFN-based eMBMS to which the present invention is applied are also located in the eNB (DU) or directly connected to the eNB (DU).

Considering this assumption, the case of providing the MBSFN-based eMBMS through the cells sharing the DU requires the consumption of the CDN server (cache) rather than the MBSFN-based eMBMS through the cells that do not share the DU Capacity will be reduced.

Therefore, the local domain setting apparatus 100 according to the present invention sets the MBSFN on the cells sharing the DU when setting the MBSFN, and thereby, in the eMBMS environment employing the MBSFN technology, The effect of realizing a domain setting scheme can be expected.

As described above, according to the local domain setting apparatus of the present invention, in the broadcast service (eMBMS) environment adopting the local domain (e.g., MBSFN) technology, the optimal local domain setting considering the traffic movement in the mobile communication network It is possible to reduce the traffic load in the mobile communication network and further reduce the capacity consumption of the CDN server.

Hereinafter, an operation method of the local domain setting apparatus according to the preferred embodiment of the present invention will be described with reference to FIG. For convenience of explanation, reference numerals used in Figs. 1 to 3 and 5 will be described.

The method of operating the local domain setting apparatus 100 according to the present invention checks a plurality of cells that can be included in a local domain, e.g., MBSFN 1, with respect to an MBSFN-based eMBMS (S100).

For example, as shown in FIG. 5, when a cell formed by an eNB participating in an eMBMS among a plurality of eNBs 10 in which a UE desires to use an eMBMS is cells 1 through 10, The method of operating the local domain setting apparatus 100 according to the present invention will identify cells 1 through 10 as a plurality of cells.

The method for operating the local domain setting apparatus 100 according to the present invention further includes the step of determining whether a specific cell and a base station module (DU) set as MBSFN 1 among the candidate cells set as the local domain, that is, MBSFN 1, Set the shared cell to MBSFN 1 first.

Hereinafter, the second embodiment of the first embodiment and the second embodiment mentioned above will be described in more detail.

First, the method for operating the local domain setting apparatus 100 according to the present invention first checks a cell in which a UE capable of using an eMBMS exists in a plurality of cells (cells 1 to 10) identified in step S100 through a single cell (S110).

For example, an operation method of the local domain setting apparatus 100 according to the present invention is to check a list of terminals to use a local domain based eMBMS, and to use the eMBMS only through a single cell based on the terminal list It is possible to identify a cell in which at least one terminal exists.

Accordingly, the method of operating the local domain setting apparatus 100 according to the present invention can identify a cell in which at least one terminal capable of using an eMBMS is available only through a single cell based on the terminal list, and transmits the checked cell to the MBSFN 1 (S120).

As described above, a cell having a priority set to MBSFN 1, that is, a cell having at least one UE capable of using an eMBMS only through a single cell is a specific cell predefined by MBSFN 1 described above.

For example, it is assumed that cells 1, 2, 3, 4, 6, and 9 among the plurality of cells, that is, cells 1 to 10 shown in FIG. 5, are specific cells set as MBSFN 1 first.

Thereafter, the method of operating the local domain setting apparatus 100 according to the present invention checks a candidate cell in which there are only terminals capable of using an eMBMS in a plurality of cells, that is, cells 1 to 10 through at least two cells (S130) .

At this time, among the plurality of cells, that is, the cells 1 to 10, cells 1, 2, 3, 4, 6, and 9 in which any one of the UEs can use the eMBMS through only a single cell can use the eMBMS through two or more cells It is obvious that the mobile terminal will be excluded from the process of identifying a cell.

As a result, the method of operating the local domain setting apparatus 100 according to the present invention is a method for operating the local domain setting apparatus 100, in which cells 1, 2, 3, 4, 6, , A candidate cell in which only the UE capable of using the eMBMS is present through two or more cells will be checked.

At this time, as shown in FIG. 5, a terminal exists in a border area between the cell 5 and the cell 8, a terminal exists in the border area between the cell 7 and the cell 10, and a terminal exists in the border area between the cell 8 and the cell 9. [ .

In this case, the method of operating the local domain setting apparatus 100 according to the present invention can identify the cells 5, 7, 8, and 10 as candidate cells that exist only in a terminal capable of using eMBMS through two or more cells.

The operation method of the local domain setting apparatus 100 according to the present invention is characterized in that among the candidate cells 5, 7, 8, and 10 identified as described above, the specific cells 1, 2, 3, 4, 6, and 9 previously set to MBSFN 1 Cells that share DU can be set first with MBSFN 1 rather than cells that do not share DUs with specific cells 1, 2, 3, 4, 6,

That is, the method of operating the local domain setting apparatus 100 according to the present invention is a method for selecting a specific cell 1, 2, 3, 4, 6, or 7 set to MBSFN 1 among the candidate cells 5, For a cell sharing 9 and DU (S140 Yes), it can be set to MBSFN1.

Therefore, as shown in FIG. 5, the method of operating the local domain setting apparatus 100 according to the present invention is characterized in that the cells 1, 2, 3, 4, 6, and 9 among the cells 1 to 10 are set to MBSFN 1 Cells, only cells 1, 2, 3, 4, 6, and 9 among the candidate cells 5, 7, 8, and 10 having only the UE capable of using eMBMS through two or more cells and cells 5, (S140 Yes), it can be set to MBSFN1 (S150).

Meanwhile, the method of operating the local domain setting apparatus 100 according to the present invention is a method of operating the local domain setting apparatus 100 according to an exemplary embodiment of the present invention. If it is not set to MBSFN 1, it is determined whether there is a UE that can not use the eMBMS (S160).

Accordingly, the method of operating the local domain setting apparatus 100 according to the present invention sets MBSFN 1 for cells 8 and 10 when there is a terminal that can not use the eMBMS unless MBSFN 1 is set (Yes in S160) (S150). If there is no UE that can not use the eMBMS (S160 No), it is not set to MBSFN1 (S170).

Meanwhile, the method of operating the local domain setting apparatus 100 according to the present invention may be performed only when the local domain setting apparatus 100 is activated at the start of the local domain (MBSFN) setting scheme of steps S100 to S170 described above, It can be executed every time a set event (for example, when a set period arrives, a command input by the operator, etc.) occurs during start-up.

As described above, the method of operating the local domain setting apparatus according to the present invention is a method of operating a local domain (e.g., MBSFN) in a broadcast service (e. G., EMBMS) environment, By implementing the domain setting scheme, the effect of reducing the traffic load in the mobile communication network can be obtained, and the effect of reducing the capacity consumption of the CDN server can be expected.

The method of operating the local domain setting device according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

According to the method of operating the local domain setting apparatus and the local domain setting apparatus according to the present invention, in the broadcast service (eMBMS) environment employing the local domain (e.g., MBSFN) technology, It is possible to realize a local domain setting method. Therefore, it is possible to realize not only the use of the related technology but also the possibility of marketing or operating the device, It is an invention that can be used for commercial use.

1: terminal
10: Multiple eNBs
20: Content server
100: Local domain setting device
110: cell check unit 120: local domain setting unit

Claims (5)

A cell identifying unit for identifying a plurality of cells that can be included in the local domain, in association with a broadcast service based on a local domain; And
A local domain that sets a specific cell as a local domain in the plurality of cells and sets a cell sharing a base station module with the specific cell among the candidate cells that can be set as the local domain in the plurality of cells, And a setting unit for setting the local domain. The method according to claim 1,
The specific cell may include:
Wherein the cell is a cell in which there is a terminal capable of utilizing the broadcast service only through a single cell among the plurality of cells. The method according to claim 1,
The candidate cell includes:
Wherein the cell is a cell other than the specific cell among the plurality of cells. The method according to claim 1,
The candidate cell includes:
Wherein the cell is a cell in which only the terminal capable of using the broadcast service is present through at least two cells among the plurality of cells. 5. The method of claim 4,
The local domain setting unit,
A cell in which the specific cell and the base station module are shared among the candidate cells is set as the local domain,
And setting the local domain as a local domain when a terminal that can not use the broadcast service exists in a cell that does not share the base station module with the specific cell among the candidate cells, Setting device.

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