KR20160092388A - Method and Apparatus for Controlling Session for Providing Local Service in Mobile Small Cell - Google Patents

Abstract

In order to reduce the load of the macro network and to reduce the system load due to the DPI (Deep Packet Inspection) analysis, the present invention adopts the MAC address allocated to the macro network and the mobile cell connection, It is possible to efficiently provide local services through a mobile cell in a mobile cell environment different from a service provision through a macro network to a user terminal or a device by allowing quick data processing through the allocated IP address, And more particularly, to a session control method and apparatus for controlling a session.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for providing a local service in a mobile small cell,

The present invention relates to a method and apparatus for controlling a session in a mobile small cell, and more particularly to a session control method in a mobile small cell for providing a local service through a mobile cell And apparatus.

Due to the increase in the number of devices and the surge in mobile traffic, a transformational network structure and new technologies are required to accommodate them. As a method to solve this problem, a technique of increasing the network capacity by installing a compact cell with high density or accommodating traffic by installing a femtocell in a home or office space is emerging as an alternative. However, efforts have been made to develop a new service model by intelligentizing small cells as operators pay more for installing small cells in the space covered by macrocells.

As a result of analyzing the traffic type of the user to find a new service model of the small cell, popular contents such as sports broadcast and TV show are being accessed by a large number of users, and map information And restaurant information are becoming a service type that many users access. By providing content caching and local service for small-sized content and providing a connection function to devices having various wireless interfaces, it is possible to access the service from a user close to the user, thereby improving the user's perception quality, The effect of dispersing the traffic can be obtained.

In addition, there is a need for a user network environment in which various devices exist in the vicinity of a user and connect them. The user-centered network is a concept of moving the network environment according to the movement of the user, and is a more advanced type of network movement in the existing form in which the terminal moves. In order to support the moving user work environment, a small cell is referred to as a mobile cell, and a mobile cell is provided with a communication function between various devices connected to the mobile cell by loading functions such as content caching and local service on the mobile cell. The mobile cell can be used for a temporary service providing a service for a certain period of time, a location based advertisement service, a warning message, a proximity SNS, and the like in a dynamic network configuration.

However, there is a conventional method of analyzing and distinguishing IP packets and service types (DPI) in order to distinguish between traffic from a mobile cell to traffic in a macro network and traffic from a mobile cell. In this case, When the analysis is performed, the system load becomes large, and control and data processing time become long.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a macro network connection and a mobile cell connection simultaneously, (IP) address assigned in the macro network and the IP address assigned in the mobile cell so that the system load on the user terminal or the device can be reduced. And to provide a method and an apparatus for controlling a session in a small cell, which can effectively provide a local service through a mobile cell to be suitable for a mobile cell environment.

According to another aspect of the present invention, there is provided a method for providing a local service in a mobile cell between a mobile station and a macro base station, the method comprising the steps of: Receiving a macro network service by a terminal in connection with a macro network through the macro base station; And allocating a second IP address to the mobile station in response to a request from the mobile station in the mobile cell while the macro network service is maintained, wherein the mobile station provides a local service directly from the mobile cell using the second IP address Lt; RTI ID = 0.0 > a < / RTI > session.

The macro network service through the first bearer (see 208 in FIG. 2) to the macro network is maintained, and the second bearer (209 in FIG. 2) ) Can be maintained.

Wherein the controlling the session comprises: establishing a connection with the MS according to an RRC connection setup request in the mobile cell; and assigning the second IP address to the MS, and then requesting an RRC connection re- And setting up the second bearer by performing connection re-establishment with respect to the MS according to the second bearer.

The macro network service through the third bearer (see 301 in FIG. 3) going to the macro network via the mobile cell is maintained at the time of base station handover according to the movement of the mobile cell, The local service via the bearer (see 302 in FIG. 3) can be maintained,

Here, the third bearer is a bearer in which the UE accesses the service of the macro network server via the mobile cell according to a base station interface function of the mobile cell, and the fourth bearer is a bearer, And connects to a local server inside the mobile cell to receive a local service.

The step of receiving the macro network service may include controlling the macro network service through the third bearer by operating the local gateway in a relay mode according to a registration request of the terminal in the mobile cell, Wherein the step of controlling comprises transmitting the bearer setup request of the terminal from the mobile cell to the macro network and transmitting the bearer setup request from the mobile cell to the mobile terminal in the mobile network in accordance with the confirmation of the IP address of the local gateway in the macro network. And setting the fourth bearer according to an RRC connection re-establishment with the MS according to the bearer setup request of the macro network by responding to the macro network after assigning an IP address.

The fourth bearer can be set up as a relay of the MME (Mobility Management Entity) of the mobile cell and the macro network according to the bearer setup request of the UE.

The local service may include a content caching service for a digital multimedia content of the macro network, a location based advertisement service, a warning message service, a proximity SNS (Social Network Service), or a temporary service for providing a service for a predetermined time have.

A mobile station located between a terminal and a macro base station for providing a local service according to another aspect of the present invention connects a macro network through the macro base station using a first IP address allocated in a macro network A local gateway for allocating a second IP address to the terminal according to a request of the terminal in the mobile cell while receiving a macro network service; And a session controller for controlling the session so that the terminal receives the local service directly from the mobile cell using the second IP address.

During the base station handover according to the movement of the MS, the macro control service through the first bearer to the macro network is maintained while the session control unit maintains the local service through the second bearer to the mobile cell .

Wherein the session control unit controls connection establishment with the terminal according to a RRC connection establishment request in the mobile cell and allocates the second IP address to the terminal in the local gateway, And reestablishes connection with the terminal according to the re-establishment request to set the second bearer.

The session control unit maintains the macro network service through the third bearer to the macro network via the mobile cell even when the base station handover is performed according to the movement of the mobile cell, Lt; RTI ID = 0.0 > service. ≪ / RTI >

Wherein the local gateway operates in a relay mode for the macro network service through the third bearer and the session control unit transmits a bearer setup request of the terminal to the macro network, When the local gateway assigns the second IP address to the terminal and responds to the macro network, the RRC connection re-establishment with the terminal according to the bearer setup request of the macro network causes the fourth The bearer can be set.

The session control unit sets the fourth bearer by relaying with the MME (Mobility Management Entity) of the macro network according to the bearer setup request of the terminal.

The local service may include a content caching service for a digital multimedia content of the macro network, a location based advertisement service, a warning message service, a proximity SNS (Social Network Service), or a temporary service for providing a service for a predetermined time have.

According to the method and apparatus for providing a local service in a small cell according to the present invention, it is possible to provide a method and apparatus for providing a local service in a small cell by using a multi-PDN (Public Data Network) address, It is possible to efficiently provide a local service through a mobile cell in accordance with a mobile cell environment by distinguishing a service provision through a macro network to a user terminal or a device by simultaneously receiving a network connection and a mobile cell connection, The handover signaling overhead can be reduced and the system load due to the packet DPI can be reduced.

1 is a view for explaining an environment of a wireless communication system equipped with a mobile cell according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining a scenario supporting dual connectivity that simultaneously accommodates a macro network connection and a mobile cell connection in a mobile station according to an exemplary embodiment of the present invention. Referring to FIG.
3 is a diagram for explaining a group mobile cell environment scenario in which terminals connected to mobile cells according to an embodiment of the present invention are registered as a group and can move in groups.
4 is a flowchart illustrating a session control procedure for accessing a macro network in a mobile cell according to an embodiment of the present invention.
5 is a flowchart illustrating a session control procedure in which a UE accesses a mobile cell local service according to the scenario of FIG.
6 is a flowchart illustrating a session control procedure in which a terminal accesses a mobile cell local service according to the scenario of FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols as possible. In addition, detailed descriptions of known functions and / or configurations are omitted. The following description will focus on the parts necessary for understanding the operation according to various embodiments, and a description of elements that may obscure the gist of the description will be omitted. Also, some of the elements of the drawings may be exaggerated, omitted, or schematically illustrated. The size of each component does not entirely reflect the actual size, and therefore the contents described herein are not limited by the relative sizes or spacings of the components drawn in the respective drawings.

As described above, in the present invention, in a wireless communication system equipped with a mobile cell, in particular, in an environment having a mobile cell providing a local service, a device such as a terminal or a sensor provides a service In this paper, we propose a method for receiving local services at the same time.

1 is a diagram for explaining an environment of a wireless communication system 100 provided with a mobile cell 103 according to an embodiment of the present invention.

1, a wireless communication system 100 according to an exemplary embodiment of the present invention includes a wired / wireless Internet (e.g., wired Internet, WiFi, WiBro, etc.), a mobile communication network (e.g., WCDMA, LTE, The macro base station 104, the MME 105, the SGW 106, the PGW 107, and the PSS 108 on the macro network (or the core network). It also includes a mobile cell (s) 103 that relays communications between the macro base station 104 and the device 102, such as a user terminal 101 or a sensor.

The device 102 such as the user terminal 101 or the sensor includes all the electronic devices that are served through the macro base station 104 or the mobile cell 103. [ For example, the device 102 (hereinafter referred to as the terminal 101) such as the user terminal 101 and the sensor may be a mobile terminal such as a smart phone, a tablet PC, an iPad, a PDA, a PMP, And various digital multimedia contents supported by servers of macro network through wired / wireless Internet (eg wired Internet, WiFi, WiBro) and mobile communication network (eg WCDMA and LTE) And may be various electronic devices that can be provided.

3GPP, Bluetooth, ZigBee, NFC (Radio Frequency Identification), and the like, if the mobile terminal 103 can provide the corresponding service or contents in the neighboring mobile cell 103, Etc., a communication method using a dedicated communication method (Uu ') or another RAT (Radio Access Technology), and the like, and can receive various local services such as a service for digital multimedia contents . In the mobile cell 103, a content caching service, a location-based advertisement service, a warning message, a proximity SNS (Social Network Service) for a digital multimedia content held in a content server on a core network, A temporary service providing a service, and the like can be provided as a local service.

Here, the mobile cell 103 may be a portable small cell (mobile small cell), a small base station capable of providing a local service for digital multimedia contents, or a coverage unit area capable of communication by the small base station . The mobile station 103 between the macro base station 104 and the terminal 101 not only performs a relay function for providing a service provided by a server on the core network to the terminal 101 via the macro base station 104 A service occupying a large amount of capacity, and a service for digital multimedia contents such as a moving picture in a nearest space between the mobile station 103 and the terminal 101, thereby providing a local service so as to reduce the load on the core network.

The mobile cell 103 is connected to the macro base station 104 via a backhaul and is connected to the mobile base station 104 through a handover such that the mobile cell 103 wirelessly connected thereto moves to another base station. Function.

A content server on the core network in order to connect with the macro base station 104 to support the service, and on the core network, an MME (Mobility) for managing the profile of the terminal 101 and the mobile cell 103, A home subscriber server (HSS) 108 that manages persistent profiles of each node and a subscriber, a SGW (Serving Gateway) 106 for packet routing, and a PGW (PDN Gateway) ) 107 and the like. The functions of the MME 105, the SGW 106, the PGW 107 and the PSS 108 basically provide the functions defined in the 3GPP standard and include functions for supporting the functions of the mobile cell 103 Can be mounted.

2 is a diagram for explaining a scenario supporting dual connectivity in which a mobile station 103 simultaneously receives a macro network connection and a mobile cell connection in a mobile cell 103 according to an embodiment of the present invention.

2, a mobile cell 103 according to an exemplary embodiment of the present invention includes a radio resource control unit 201 for performing radio resource control (RRC), a local gateway 202, a local server 203, a terminal interface 204 for transmitting and receiving control information and data information through interfacing with the mobile cell interface 212 of the terminal 101, and a mobile cell interface 216 of the macro base station 104 A base station interface 205 for transmitting and receiving control information and data information, and a session control unit 210 for session control. These components of the mobile cell 103 may be implemented in hardware, software, or a combination thereof.

Terminal 101 The session control unit 214 can exchange necessary signaling or data with the session control unit 210 through interfacing with the terminal interface 204 of the mobile cell 103 using the mobile cell interface 212 Thereby establishing a bearer 209 for access to the local server 203 within the mobile cell 103 by connecting to the local gateway 202. [ The session control unit 214 of the terminal 101 can access the session control unit 217 of the MME 105 through the base station interface 213 and the terminal interface 215 of the macro base station 104 via the interface The bearer 208 for accessing the service 218 of the macro network server can be set via the macro base station 104 as a relay of the session control unit 217 of the MME 105. [

FIG. 2 shows a scenario in which the mobile cell 103 can provide services such as an advertisement and a notification service for an unspecified number of cells in an open mode. Since the mobile cell 103 is a small base station that can be moved, it is possible to provide a service through the mobile cell 103 when the UE 101 is within the mobile cell coverage. However, when the mobile cell 103 is out of the mobile cell coverage, Assume a structure that can receive new services.

In this scenario, since the mobile station 103 and the mobile station 101 move with different mobile lines, the service provision through the mobile station 103 is performed dynamically, and the mobile station 103 uses the mobile cell 103 and the macro network Frequent handovers may occur between connections.

In order to prevent this, in the scenario of FIG. 2, while the UE 101 moves and is connected to the macro network in the handover of the base station 104, while receiving the macro network service, It is shown that a service specific to a mobile cell according to a bearer 209 to an interface, i.e., a direct mobile cell 103 is provided. According to the bearer 209 going to the mobile cell 103, the terminal interface 204 can connect with the terminal 101 to exchange necessary signaling or data.

To this end, the radio resource control unit 401 for the radio resource control (RRC) function of the macro base station 104 and the radio resource control unit 201 for the RRC function of the mobile cell 103 exist separately. A service operation is performed in two cells by the radio resource control units 401 and 201. At this time, the terminal 101 manages resources by driving one radio resource control unit 207 performing an RRC function, The bearer to which the terminal 101 connects may have a bearer 208 for the macro network and a bearer 209 for the mobile cell at the same time.

3 is a diagram for explaining a group mobile cell environment scenario in which terminals connected to mobile cells according to an embodiment of the present invention are registered as a group and can move in groups.

3 shows a scenario in which the terminal 101 connected to the mobile cell 103 moves the terminal 101 and the mobile cell 103 into groups in accordance with the movement of the mobile cell 103, The backhaul link between the mobile cell 103 and the macro base station 104 is grouped to maintain the provision of the macro network service even during the handover of the base station 104 according to the location information of the mobile station 103 and the mobile station 103, Service connection is also maintained. In this scenario, the terminal 101 can access a macro network through the mobile cell 103, and the terminal 101 can access the service provided by the mobile cell 103 at the same time. At this time, the terminal 101 manages resources by driving one radio resource control unit 207 performing the RRC function, and the bearer to which the terminal 101 accesses is managed by the mobile terminal interface 212 of the terminal 101, A bearer 301 for going to the macro network via the mobile cell 103 via the base station interface 205 of the mobile cell 103 and a bearer 301 for transmitting the terminal impersonation of the mobile cell interface 212 and the mobile cell 103 The bearer 302 going to the mobile cell 103 through the interfacing between the paces 204 may exist at the same time.

The session control unit 214 of the terminal 101 provides necessary signaling or data to the session control unit 210 through interfacing with the terminal interface 204 of the mobile cell 103 using the mobile cell interface 212 Thereby establishing a bearer 302 for access to the local server 203 within the mobile cell 103 by connecting to the local gateway 202. [ The session control unit 214 of the terminal 101 connects to the mobile cell 103 through the interface with the base station interface 205 of the mobile cell 103 using the mobile cell interface 212, It is possible to connect to the session control unit 217 of the MME 105 in accordance with the relay function of the base station interface 205 of the MME 105. The service of the macro network server via the macro base station 104 as a relay of the session control unit 217 of the MME 105 A bearer 301 for connection to the bearer 218 can be set.

The terminal interface 204 of the mobile cell 103 can communicate with the mobile cell interface 212 of the terminal to exchange necessary signaling and data and the base station interface 205 transmits the data to the macro network via the mobile cell 103 The macro base station 104 and the terminal 101 through the bearer 301 to exchange necessary signaling and data.

4 is a flowchart illustrating a session control procedure for accessing a macro network in a session control unit 210 of a mobile cell 103 according to an exemplary embodiment of the present invention.

4, the mobile cell 103 establishes a wireless connection with the macro base station 104 through the radio resource control unit 201 when the mobile station 103 is powered on, (Step 402). At this time, the registration request message includes identifier information indicating that the node type to be registered is the mobile cell 103, and the like. When the digital multimedia contents service is provided through the local server 203 provided in the mobile cell 103, the IP address of the local gateway 202 for the local APN (Access Point Name) MME 105, and the MME 105 stores and registers the IP address of the local APN in the storage means. The IP address of the local gateway 202 with respect to the local APN may be stored in a DNS (Domain Name Server) on the network and may be provided to the MME 105 through a query using the identifier information in the MME 105.

The MME 105 requests for authentication and analyzes the information received from the HSS 108 to process the authentication of the mobile cell 103 (403). The MME 105 selects the SGW 106 and the PGW 107 for the mobile node 103 and sets a default bearer to the macro network through the session connection request and the response message similarly to the registration procedure of the general terminal (404, 405, 406, 407 ).

After securing the network resources for the mobile cell 103, the MME 105 sends an S1 initial context connection request for establishing a connection between the MME 105 and the base station 104 (408). The macro base station 104 allocates a radio bearer to the mobile cell 103 through an RRC connection reestablishment request message for mobile cell registration (step 409). The mobile cell 103 connects to the macro base station 104 through the allocated radio bearer and sends a response 410. The macro base station 104 transmits to the MME 105 that the radio bearer allocation is completed, (411).

5 is a flowchart illustrating a session control procedure of the session control unit 210 when the terminal 102 accesses a mobile cell local service according to the scenario of FIG.

5 shows an example of a procedure for the scenario shown in Fig. 2, in which a terminal 101 is connected to a macro network via a default bearer 208 to a macro network, Quot ;, and " request " In this scenario, a separate radio bearer 209 is allocated between the mobile station 101 and the mobile cell 103 and can be configured to be lighter than the existing protocol. A separate radio bearer 209 for the UE 101 to the mobile cell 103 according to this scenario can establish a connection regardless of the default bearer 208 with the macro base station 104. [

First, the terminal 101 having an already assigned IP address in the macro network receives information necessary for registration such as a synchronization signal of the macro base station 104 and system information, synchronizes with the macro base station 104 (510) 4, registration is performed in the macro network using the registration request message including the identifier information, the IP address, etc., and the terminal 101 establishes connection with the default bearer 208 to the macro network (520) .

Next, the terminal 101 receives information necessary for registration, such as a synchronization signal of the mobile cell 103 and system information, to set up a separate radio bearer 209 for the mobile cell 103, And attempts to connect to the mobile cell 103 (502). Information on services provided in the mobile cell 103, local APN (e.g., local gateway IP address), and the like may be included in the system information.

The mobile station 103 requests the terminal 101 to establish an RRC connection and establishes connection 503 and the terminal 101 transmits the local APN of the mobile node 103 to the destination address And sends a registration request message including identifier information, an IP address, and the like to request registration (504).

The session control unit 210 of the mobile cell 103 requests the local gateway 202 to establish a session connection and the local gateway 202 requests the session of the mobile station 103 to be identifiable within the coverage of the mobile cell 103. [ (506) and responds to the session control unit 210 (507). The session control unit 210 of the mobile cell 103 requests the terminal 101 to reset the RRC connection 508 and then the terminal 101 responds to the request by using the terminal 101 and the mobile station 103 The terminal registration is completed and the radio resources are set. That is, the terminal 101 sets a separate radio bearer 209 to the mobile cell 103.

Accordingly, even when the UE 101 moves and the base station handover is performed, the connection with the macro network is maintained through the default bearer 208 going to the macro network using the IP address assigned by the UE 101 in the macro network The terminal 101 can receive a unique local service from the mobile cell 103 through a separate radio bearer 209 to the mobile cell 103. [

6 is a flowchart for explaining a session control procedure of the session control unit 210 when the UE 101 accesses the mobile cell local service according to the scenario of FIG.

6 shows a scenario in which the mobile station 103 is connected to the macro network via the mobile cell 103. The mobile cell 103 operates in the relay mode to allow the mobile station 103 to communicate with the macro network A procedure for connecting to the mobile cell 103 for setting up an additional bearer 302 to the mobile cell 103 in order to receive a local service while being connected to the macro network via the default bearer 301 to the mobile station 103 .

At this time, in order to determine whether the data (IP packet) sent from the terminal 101 is data to the macro network or data to the local server 203 in the mobile cell 103, a DPI (Deep Packet Inspection) And service types. However, if DPI function is executed for all data every time, it takes a system load and processing time. 6 is a block diagram illustrating a configuration of a mobile communication system according to an exemplary embodiment of the present invention. Referring to FIG. 6, a macro network access bearer 301 and a mobile cell connection bearer 302 are set. , And the local IP address assigned to each of the two.

In order to do this, first, in accordance with the registration request of the terminal 101 having the already assigned IP address in the macro network, the terminal 101 is registered in the mobile cell 103 (601) And operates in the relay mode of the local gateway 202, it is assumed that the terminal 101 can access the macro network through the macro network access bearer 301 and receive the macro network service.

In this state, in order to allocate a local IP address in the mobile cell 103 of the local network and set up the mobile cell access bearer 302, the terminal 101 transmits service access in the local server 203 of the mobile cell 103 (Including the IP address of the UE 101 allocated in the macro network) to the mobile cell 103 and the mobile cell 103 transmits the bearer setup request message to the MME 105 session control unit 217 through the base station 104. [ (602). The bearer setup request message transmitted to the MME 105 may include a PDN address such as a local gateway IP address for the local APN in addition to the IP address of the terminal 101. [

Accordingly, the MME 105 determines whether or not the terminal 101 can access the mobile cell 103, searches the local gateway IP address for the corresponding APN stored at the time of registering the node 103 of the mobile cell 103, The local gateway IP address is inquired through a query to confirm whether or not the IP address is registered (603). After confirming the registration of the local gateway IP address, the MME 105 transmits a message including the local gateway IP address to the local gateway 203 in the mobile cell 101 to request a session connection (604).

The local gateway 202 assigns a local IP address of the UE 101 to the MME 105 and assigns a tunnel ID between the MME 105 and the MN 103 to the MME 105 (Including the local IP address) (606). The MME 105 completes the assignment of the network resources and transmits a mobile cell bearer establishment request to the mobile cell 103 by loading the local IP address of the mobile station 103 allocated in the mobile cell 103 (607).

The mobile station 103 allocates a radio bearer for the uplink and the downlink in the session controller 210 and sends an RRC connection reset request for the radio resource to the mobile station 101 in operation 608, . The UE 101 reassigns the corresponding radio resource according to the message transmitted from the mobile cell 101 and sends a response thereto (609). Mobile Cell 101 The session control unit 210 sends a response to the mobile cell bearer setup to the MME 105 and completes the setting with the local server 203 (610).

Accordingly, even when the base station handover is performed according to the movement of the mobile cell 103, the terminal 101 transmits the macro network 100 through the bearer 301 to the macro network via the mobile cell 103 using the IP address allocated in the macro network. The terminal 101 can receive a unique local service from the mobile cell 103 through the separate radio bearer 302 to the mobile cell 103 while maintaining the connection with the mobile cell 103. [

As described above, in the small-sized cell 103 according to the present invention, the macro-cell connection and the cell-to-cell connection are performed through the multiple PDN (Public Data Network) address, It is possible to efficiently provide the local service through the mobile cell to the user terminal 101 or the device 102 separately from the service provision through the macro network in a manner suitable for the mobile cell environment, It is possible to reduce the handover signaling overhead and reduce the system load by packet DPI analysis.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the essential characteristics of the invention. Therefore, the spirit of the present invention should not be construed as being limited to the embodiments described, and all technical ideas which are equivalent to or equivalent to the claims of the present invention are included in the scope of the present invention .

In the terminal 101,
In the mobile cell 103,
The macro base station (104)
A Mobility Management Entity (MME)
The SGW (Serving Gateway)
The PGW (PDN Gateway)
The Home Subscriber Server (HSS)
The radio resource control unit (201)
Local gateway 202,
The local server (203)
The terminal interface 204,
The base station interface (205)
The session control unit 210,

Claims (14)

A method for providing a local service in a mobile cell between a terminal and a macro base station,
Receiving a macro network service through the macro base station using the first IP address assigned by the macro network and connecting the macro network to the macro network; And
Wherein the macro network service is maintained while a second IP address is assigned to the terminal according to a request of the terminal in the mobile cell so that the terminal receives the local service directly from the mobile cell using the second IP address Steps to Control Session
The method comprising the steps of: The method according to claim 1,
The macro network service through the first bearer to the macro network is maintained and the local service through the second bearer to the mobile cell is maintained even when the base station handover is performed according to the movement of the UE A method of providing a local service. 3. The method of claim 2,
Wherein the controlling the session comprises:
Setting up a connection with the MS in response to a RRC connection setup request in the mobile cell; and assigning the second IP address to the MS, and re-establishing a connection reset with the MS according to an RRC connection re- , Establishing the second bearer
The method comprising the steps of: The method according to claim 1,
The macro network service through the third bearer to the macro network via the mobile cell is maintained even in the base station handover according to the movement of the mobile cell and the local service through the fourth bearer to the mobile cell is maintained The local service providing method comprising: 5. The method of claim 4,
The step of receiving the macro network service may include controlling a macro network service through the third bearer by operating a local gateway in a relay mode according to a registration request of the terminal in the mobile cell,
Wherein the controlling the session comprises:
The bearer setup request of the terminal is transferred from the mobile cell to the macro network, and the second IP address is assigned to the terminal in the mobile cell according to the confirmation of the IP address of the local gateway in the macro network Setting the fourth bearer according to the bearer setup request of the macro network by re-establishing RRC connection with the MS by responding to the macro network
The method comprising the steps of: 5. The method of claim 4,
Wherein the fourth bearer is set up as a relay of the MME (Mobility Management Entity) of the mobile cell and the macro network according to a bearer setup request of the UE. The method according to claim 1,
The local service may include a content caching service, a location-based advertisement service, a warning message service, a proximity SNS (Social Network Service) for a digital multimedia content of the macro network, or a temporary service for providing a service for a predetermined time A local service providing method. A mobile cell located between a terminal for providing a local service and a macro base station,
And a second IP address is assigned to the terminal in response to a request from the terminal in the mobile cell while the terminal is connected to the macro network through the macro base station using the first IP address allocated in the macro network, Local gateway to assign; And
And a session controller for controlling the session so that the terminal receives the local service directly from the mobile cell using the second IP address,
And a movable cell. 9. The method of claim 8,
During the base station handover according to the movement of the MS, while the macro network service through the first bearer to the macro network is maintained,
Wherein the session control unit maintains the local service through a second bearer to the mobile cell. 10. The method of claim 9,
Wherein the session control unit controls connection establishment with the terminal according to a RRC connection establishment request in the mobile cell and allocates the second IP address to the terminal in the local gateway, And reconfigures the connection with the terminal according to a re-establishment request to set the second bearer. 9. The method of claim 8,
The session control unit maintains the macro network service through the third bearer to the macro network via the mobile cell even when the base station handover is performed according to the movement of the mobile cell, And maintains the local service through the mobile station. 12. The method of claim 11,
Wherein the local gateway operates in a relay mode for the macro network service through the third bearer,
Wherein the session control unit transmits a bearer setup request of the terminal to the macro network, and upon receipt of an IP address of the local gateway in the macro network, the local gateway assigns the second IP address to the terminal And in response to the macro network, sets the fourth bearer according to an RRC connection re-establishment with the MS according to a bearer setup request of the macro network. 12. The method of claim 11,
Wherein the session controller sets the fourth bearer by relaying with a Mobility Management Entity (MME) of the macro network according to a bearer setup request of the terminal. 9. The method of claim 8,
The local service may include a content caching service, a location-based advertisement service, a warning message service, a proximity SNS (Social Network Service) for a digital multimedia content of the macro network, or a temporary service for providing a service for a predetermined time Characterized by a mobile cell.

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