WO2010114334A2 - Procédé et système de support de services lbo dans un réseau de communication sans fil comprenant des femtocellules - Google Patents

Procédé et système de support de services lbo dans un réseau de communication sans fil comprenant des femtocellules Download PDF

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Publication number
WO2010114334A2
WO2010114334A2 PCT/KR2010/002043 KR2010002043W WO2010114334A2 WO 2010114334 A2 WO2010114334 A2 WO 2010114334A2 KR 2010002043 W KR2010002043 W KR 2010002043W WO 2010114334 A2 WO2010114334 A2 WO 2010114334A2
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femto
gateway
base station
lbo
bearer
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PCT/KR2010/002043
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English (en)
Korean (ko)
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WO2010114334A3 (fr
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임채권
배범식
배은희
최성호
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삼성전자 주식회사
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Publication of WO2010114334A2 publication Critical patent/WO2010114334A2/fr
Publication of WO2010114334A3 publication Critical patent/WO2010114334A3/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

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  • the present invention relates to a method and apparatus for supporting a local breakout service in a wireless communication network including a femto cell. More specifically, the present invention relates to a method and apparatus for supporting a local breakout service for transmitting data directly to a data network without passing through a core network when the terminal is connected to a femtocell base station.
  • Femto Cell is a small mobile communication base station connected to the mobile communication core network through a broadband network installed indoors, such as home or office. Femtocells have various advantages to expand indoor coverage, improve call quality, and efficiently provide a variety of wired and wireless convergence services.
  • 3GPP LTE Long Term Evolution
  • eNB evolved NodeB
  • HeNB home evolved NodeB
  • the dual eNB is a macro base station that manages a typical macro cell
  • the home eNB is a femto base station that manages a femto cell.
  • 3GPP considers an environment in which a femto cell is installed which can be accessed by a specific user separately from the existing macro base station.
  • the femto cell may be installed by the user or the operator for the purpose of increasing coverage, increasing capacity, or providing other differentiated services.
  • the service coverage of femtocells can be considered from a few meters up to the maximum macro service coverage.
  • a femto cell can be directly connected to a data network in the related art
  • a terminal connected to a femto cell uses a data path through a femto cell base station, a serving gateway, a packet data network (PDN) gateway, or the like.
  • PDN packet data network
  • the present invention has been made to solve the above problems, and provides a wireless communication network structure and method for providing an efficient data transmission environment to a terminal by providing a local breakout service to a terminal connected to a femtocell.
  • the purpose is.
  • the local breakout (LBO) service supporting method of the present invention provides an initial terminal message for activating a radio bearer by a terminal connected to a femtocell base station via a femtocell base station gateway.
  • a first step of transmitting to a mobility management entity of a network a second step of the terminal transmitting a PDN connection request message for forming a femto PDN gateway and an LBO bearer connected to an LBO network heterogeneous with the core network to the mobility management entity;
  • Step 3 the mobility management entity receiving the PDN connection request message and delivering the PDN connection request message to a femto serving gateway located at the same LBO femto cell base station gateway as the femto cell base station gateway; and the femto serving gateway requests a PDN connection from the mobility management entity.
  • the femto serving gateway obtains uplink information for the femto PDN gateway, Delivering to the femto cell base station via the mobility management entity to form an LBO uplink bearer; and the femto serving
  • the LBO femto cell base station of the present invention for solving the above problems is connected to the LBO network heterogeneous to the core network, and transmits uplink information to the femto serving gateway when receiving the default bearer request message from the femto serving gateway, A femto PDN gateway receiving downlink information transmitted from the femtocell base station via the mobility management entity to form an LBO downlink bearer; And a femto cell base station receiving uplink information transmitted from the femto PDN gateway through the mobility management entity to form an LBO uplink bearer, and transmitting the downlink information to the femto PDN gateway through the mobility management entity. It is characterized by including.
  • the LBO femto cell base station gateway of the present invention obtains the address of the femto cell base station, obtains an address of the femto cell base station from the femto cell base station gateway and the femto cell base station gateway connecting the femto cell base station and the mobility management entity.
  • Determining the address of the femto PDN gateway connected to the core network and heterogeneous LBO network obtains uplink information for the femto PDN gateway and delivers it to the femto cell base station, downlink information about the femto serving base station of the femto cell base station It is characterized in that it comprises a femto serving gateway for controlling to form an LBO bearer by obtaining and passing to the femto PDN gateway.
  • the LBO service support method in a wireless communication network including a femto cell the terminal connected to the femto cell base station, including the identification information of the terminal, and the femto PDN gateway connected to the LBO network
  • a second step of delivering to a femto serving gateway having location information a third step of obtaining, by the femto serving gateway, location information of the femto PDN gateway using identification information of the terminal; and the femto serving gateway by the femto PDN gateway; LB using location information
  • a fourth step of forming an O uplink bearer or an LBO downlink bearer a fourth step of forming an O uplink bearer or an LBO downlink bearer.
  • an LBO femtocell base station gateway supporting a local breakout (LBO) service in a wireless communication network includes identification information of a terminal and the terminal is connected to a femto PDN gateway connected to the LBO network.
  • a PDN connection request message for bearer formation of the terminal is received from the terminal and transmitted to a mobility management entity, and a femtocell base station gateway for obtaining location information of a femtocell base station to which the terminal is connected, and a bearer generation request message for LBO bearer formation
  • a femto serving gateway from the mobility management entity, obtaining location information of the femto PDN gateway from the femto cell base station gateway using identification information of the terminal, and forming an LBO uplink bearer or an LBO downlink bearer; include The femto cell base station gateway and the femto serving gateway have the same location information.
  • the terminal connected to the femto cell transmits data directly to the data network without passing through the core network, thereby providing an efficient data transmission environment for the terminal.
  • FIG. 1 is a diagram illustrating a structure of a wireless communication network in which a macro cell base station and a femto cell base station coexist.
  • FIG. 2 is a diagram illustrating the structure of a femto cell base station and a femto cell base station gateway to enable LBO service of a femto cell base station according to an embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating a process in which a terminal 170 requests an LBO service through an LBO femto cell base station 210 and receives an LBO service.
  • FIG. 4 is a flow diagram illustrating operation after femto serving gateway 260 receives a Create Default Bearer Request message from mobility management entity 120.
  • FIG. 5 is a flow diagram illustrating operation after femto serving gateway 260 receives an Update Bearer Request message from mobility management entity 120.
  • FIG. 6 is a flowchart illustrating a process of transmitting data to a terminal 170 when data to be transmitted to an idle mode terminal is generated in an LBO network.
  • LTE Long Term Evolution
  • a cell or a base station may be used with the same meaning. Accordingly, the macro cell or macro cell base station may be used in the same sense, and likewise the femto cell or femto cell base station may be used in the same sense.
  • LBO local break out
  • the local break out (LBO) service described in the present invention refers to a service in which data of a terminal is directly transmitted to a data network (or LBO network) without passing through a core network.
  • the LBO network of the present invention refers to all networks heterogeneous from the core network, and an example thereof may be a service network that provides the Internet or a home service.
  • a wireless communication network according to an embodiment of the present invention is based on a cellular system, and a wireless communication network in which macro cell base stations and femto cell base stations coexist among the cellular systems will be described.
  • the wireless communication network according to FIG. 1 includes a macro cell base station 110, a mobility management entity 120, a serving gateway 130, a PDN gateway 140, a femto cell base station 150, a femto cell base station gateway 160, and a terminal. And may include 170.
  • Macro cell base station (Macro eNB) 110 is a base station that manages the macro cell.
  • the macro cell refers to a cell of a general cellular system
  • the macro cell base station 110 is a base station for managing and controlling the macro cell, but may be used in the same sense for convenience in the present invention.
  • the macro cell base station 110 is connected to the terminal 170 through a radio channel and controls radio resources.
  • the macro cell base station 110 may generate and broadcast necessary control information in the macro cell as system information, or allocate radio resources to transmit and receive data or control information with the terminal 170.
  • the macro cell base station 110 may collect the channel measurement result information of the current cell and the neighbor cells from the terminal 170 to determine the handover and command the handover.
  • the macro cell base station 110 for this purpose includes a control protocol such as a radio resource protocol related to radio resource management.
  • the mobility management entity (MME) 120 manages an idle terminal and selects a packet data network (PDN) gateway and a serving gateway. In addition, the mobility management entity performs roaming and authentication related functions.
  • the mobility management entity 120 processes the bearer signal generated by the terminal 170.
  • the serving gateway 130 serves as a mobility anchor when handovers between base stations or when moving between 3GPP radio networks.
  • the PDN gateway 140 assigns an IP address of the terminal 170, performs packet data related functions of the core network, and serves as a mobility anchor when moving between the 3GPP wireless network and the non-3GPP wireless network. Perform. In addition, the PDN gateway determines the bearer band provided to the subscriber, and is in charge of forwarding and routing functions for packet data.
  • the femto cell base station (Home eNB, HeNB) 150 is connected to a core network such as the mobility management entity 120 through a radio network controller to provide a mobile communication service to the terminal 170.
  • the femto cell is also commonly used as a closed subscriber group cell (CSG cell), and the CSG cell refers to a cell accessible only to terminals belonging to a specific group (ie, CSG) registered in advance to access the cell.
  • CSG cell may generally be a home cell installed in a narrow area such as an individual's home, or an enterprise / regional network cell installed in a large area for an enterprise or a specific organization.
  • the femtocell base station 150 provides a mobile communication service only to a terminal registered with the mobile station, and includes identification information of a specific group that provides the service, that is, a CSG ID in a system information block (SIB). Broadcast it.
  • SIB system information block
  • the femto cell base station gateway (HeNB GW) 160 serves to connect the mobility management entity 120 and the femto cell base station 150.
  • the terminal 170 may access the core network through the macro cell base station 110 or the femto cell base station 150.
  • the data network (LBO) using the data transmission path 180 via the macro cell base station 110, the serving gateway 130, and the PDN gateway 140. Network).
  • the present invention is to provide an efficient data transmission environment by providing a local breakout service to the terminal connected to the femtocell base station 150.
  • a femto cell base station 150 and a femto cell base station gateway which provide a local breakout service to a terminal 170 accessing a femto cell base station without changing the mobility management entity 120 that provided a conventional macro service (
  • the structure of 160 is described and overall operation thereof is described.
  • the base station and the cell are used in parallel with each other.
  • FIG. 2 is a diagram illustrating a structure of a femto cell base station and a femto cell base station gateway for enabling LBO service according to an embodiment of the present invention.
  • a femto cell base station providing an LBO service according to an embodiment of the present invention is referred to as an LBO femto cell base station 210
  • a femto cell base station gateway providing an LBO service is referred to as an LBO femto cell base station gateway 240.
  • the LBO femto cell base station 210 may be classified into a femto PDN gateway (f-PGW) 220 and a femto cell base station 230 due to its function.
  • the LBO femto cell base station gateway 240 may be classified into a femto cell base station gateway 250 and a femto serving gateway (f-SGW) 260.
  • the femto PDN gateway 220 and the femto serving gateway 260 means that the PDN gateway included in the femto cell or the serving gateway included in the femto cell base station gateway.
  • the LBO femto cell base station is connected to the mobility management entity 120 through the LBO femto cell base station gateway 250.
  • the femtocell base station gateway 250 and the femto serving gateway 260 is installed in the LBO femtocell base station gateway 240 for its function, it characterized in that the internal communication with each other.
  • the mobility management entity 120 and the PDN gateway 140 of the core network recognize the femto serving gateway 260 installed in the LBO femto cell base station gateway 240 in the same manner as other serving gateways 130 in the core network. .
  • the present invention provides the LBO service without making any changes to the mobility management entity 120 of the core network.
  • the femto serving gateway 260 sets uplink and downlink information so that the femto cell base station 230 and the femto PDN gateway 220 can communicate directly.
  • femto serving gateway 260 is a femto PDN gateway through the mobility management entity 120 to uplink information that is originally configured for the femto serving gateway 260 to transmit data to the femto PDN gateway 220. Forward to 220.
  • the femto serving gateway 260 should be able to identify the LBO femto cell base station 210 to which the terminal 170 is connected among the plurality of LBO femto cell base stations.
  • the femto serving gateway 260 of the present invention can identify a specific LBO femto cell base station 210 by using the identification information of the terminal. Then, a radio bearer capable of direct uplink communication is formed between the femto cell base station 230 and the femto PDN gateway 220.
  • the femto serving gateway 260 transmits downlink information, which is originally configured for the femto serving gateway 260 to transmit data to the femto cell base station 230, through the mobility management entity 120 through the femto cell base station 230. Receive from and forward it to the femto PDN gateway 220. Then, a radio bearer capable of direct downlink communication is formed between the femto cell base station 230 and the femto PDN gateway 220.
  • FIG. 3 is a flowchart illustrating a process in which a terminal 170 requests an LBO service through an LBO femto cell base station 210 and receives an LBO service.
  • the terminal 170 establishes an RRC connection with the femto cell base station 230 in step S307.
  • the terminal 170 transmits an initial terminal message (INITIAL UE MESSAGE) to the mobility management entity 120 through the femto cell base station 230.
  • the femtocell base station gateway 250 may acquire identification information and femtocell base station 230 information of the terminal 170 while transmitting a message between the femtocell base station 230 and the mobility management entity 120.
  • the identification information of the terminal 170 may be a SAE Temporary Mobile Subscriber Identity (S-TMSI) or TMSI which is temporary identification information of the terminal 170.
  • the femto cell base station 230 information may be an IP address or the like of the femto cell base station.
  • the mobility management entity 120 activates all bearers used by the terminal 170 in step S309.
  • the terminal 170 transmits a PDN Connectivity Request message to the mobility management entity 120 to activate the LBO service in step S310.
  • the mobility management entity 120 acquires the IP address of the femto PDN gateway 220 using a DNS query in conjunction with a domain name server (DNS) in step S310-1.
  • DNS domain name server
  • the DNS server is 'LocalPDN.xxx.'
  • the predetermined IP address 'x.x.x.x' or arbitrary address 'x.x.x.x' is transmitted to the mobility management entity 120.
  • step S311 the mobility management entity 120, in step S311, the APN including the IP address of the femto PDN gateway to create a new bearer through the Create Default Bearer Request message, the temporary identification information of the terminal 170, The bearer ID to be newly generated is transmitted to the femto serving gateway 260.
  • step S310-1 is not necessarily performed as an optional process of the present invention.
  • the IP address of the femto PDN gateway that the mobility management entity 120 delivers to the femto serving gateway 260 may have a dummy value. This is because the mobility management entity 120 does not know the IP addresses of all PDN gateways and all femto PDN gateways. Accordingly, the femto serving gateway 260 needs to perform another procedure for obtaining the IP address of the femto PDN gateway 220.
  • the femto serving gateway 260 may obtain S-TMSI, which is temporary identification information of the terminal 170, from the information included in the message. Then, in step S312A, the femto serving gateway 260 transmits the location information of the femto cell base station 230 related to the S-TMSI to the femto cell base station gateway 250 through internal signaling using the S-TMSI (IP in the present invention). Address) to obtain it in step S312B.
  • S-TMSI temporary identification information of the terminal 170
  • the femtocell base station gateway 250 has already obtained the IP address of the femtocell base station 230 in step S308, it is possible to immediately inform the femto serving gateway 260.
  • the femto cell base station 230 and the femto PDN gateway 220 are assumed to be installed in the same LBO femto cell base station 210, the IP of the femto cell base station 230 obtained in step S312B.
  • the address may be assumed to be an address of the femto PDN gateway 220.
  • step S310-1 DNS can obtain the IP address of the femto PDN gateway 220 of the LBO femto cell base station 210, step S312A and step S312B may not be performed.
  • the femto serving gateway 260 that obtains the IP address of the femto PDN gateway 220 uses the obtained IP address to establish a femto PDN gateway 220 located in the LBO femto cell base station 210 connected to the terminal 170. Identification and direct signaling are possible.
  • the femto serving gateway 260 uses the obtained femto PDN gateway 220 IP address up to and down to allow the femto PDN gateway 220 and the femto cell base station 230 to directly communicate in step S313 and below. Set link information.
  • the femto serving gateway 260 generates an APN to the femto PDN gateway 220 and creates a new APN through a default bearer request message using the obtained femto PDN gateway IP address in step S313. ID of the bearer to be transmitted, and downlink information allocated by the femto serving gateway 260 for data transmitted from the PDN gateway 140 to the femto serving gateway 260 is transmitted.
  • the downlink information may include a downlink IP address and a GTP TEID (GPRS Tunnel Protocol Tunnel End-point ID).
  • the set uplink information is transmitted to the femto serving gateway 260.
  • the uplink information may include an uplink IP address and a GTP TEID.
  • the femto serving gateway 260 then sets uplink information set by the femto PDN gateway 220 as uplink information of the femto serving gateway 260.
  • the femto serving gateway 260 transmits the uplink information to the mobility management entity 120 together with the generated bearer ID in step S315.
  • the mobility management entity 120 then transmits the generated bearer ID and the uplink information to the femto cell base station 230 through a bearer setup request message in step S316.
  • an LBO uplink bearer is formed between the femto cell base station 230 and the femto PDN gateway 220.
  • the femto cell base station 230 may transmit data received from the terminal 170 to the femto PDN gateway 220.
  • the femto cell base station 230 establishes a radio bearer with the terminal 170.
  • the femto cell base station 230 transmits the femto cell base station 230 for data transmitted from the femto serving gateway 260 to the femto cell base station 230 through a bearer setup response message.
  • the set downlink information is transmitted to the mobility management entity 120 together with the bearer ID.
  • the downlink information may include a downlink IP address and a GTP TEID.
  • the mobility management entity 120 transmits the bearer ID and downlink information to the femto cell base station 230 to the femto serving gateway 260 in step S319. Then, the femto serving gateway 260 sets the received downlink information as the downlink information of the femto serving gateway 260 in step S320, and sets an update bearer request message along with the bearer ID to the femto PDN. Forward to gateway 220. Due to this process, an LBO downlink bearer is formed between the femto cell base station 230 and the femto PDN gateway 220. Then, since the LBO downlink bearer is formed, the femto PDN gateway 220 can be transmitted directly to the femto cell base station 230 when receiving data to be transmitted to the terminal 170 in the data network.
  • the bearer information is updated to the femto serving gateway 260 and the mobility management entity 120 through steps S321 and S322, and the terminal 170 communicates with the LBO network through the femto PDN gateway 220. Can be done directly.
  • the embodiment of the present invention based on FIG. 3 sets uplink information of the femto serving gateway 260 as uplink information of the femto PDN gateway 220 of the femto cell base station 230 and delivers the uplink information to the femto cell base station 230.
  • step S320 to set downlink information of the femto serving gateway 260 as downlink information of the femtocell base station 230 of the femto PDN gateway 260 and deliver the downlink information to the femto PDN gateway 22.
  • the femto cell base station 230 of the present invention transmits uplink data to the femto PDN gateway 230, and the femto PDN gateway 230 can directly transmit downlink data to the femto cell base station 230.
  • the femto PDN gateway uplink IP address of step S315 and the femto cell base station 230 downlink IP address of step S320 are not actual IP addresses, but other predefined IPs for LBO services. Addresses may be used.
  • 4 and 5 are flowcharts showing in detail the operation of the femto serving gateway 260 according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating operation after the femto serving gateway 260 receives a Create Default Bearer Request message from the mobility management entity 120.
  • the femto serving gateway 260 receives a Create Default Bearer Request message from the mobility management entity 120 in step S405. In operation S410, the femto serving gateway 260 checks whether an IP address of the femto PDN gateway 220 received from the mobility management entity 120 is registered with itself.
  • the femto serving gateway 260 determines whether the APN included in the default bearer request message is set to 'LocalPDN.S-TMSI' in step S415. Check whether or not. If the APN is set to 'LocalPDN.S-TMSI', the femto serving gateway 260 should be able to identify the LBO femto cell base station 210 to which the terminal 170 is connected among the plurality of LBO femto cell base stations.
  • the femto serving gateway 260 proceeds to step S420 to obtain the IP address of the femto cell base station 230 to which the terminal 170 accesses from the femto cell base station gateway 250 through internal signaling.
  • the femto serving gateway 260 sets the IP address of the femto PDN gateway 220 as the IP address of the obtained femto cell base station 230 in step S425. This is because since the femto PDN gateway 220 and the femto cell base station 230 are located in the same LBO femto cell base station 210, the IP addresses for the two entities can be considered to be the same.
  • femto serving gateway 260 establishes a bearer with femto PDN gateway 220.
  • the femto serving gateway 260 may obtain the IP address of the femto PDN gateway 220 by using the IP address of the femto cell base station 230 registered by the terminal 170. have.
  • the femto serving gateway 260 sets uplink information for data transmission from the femto cell base station 230 to the femto serving gateway 260 as an uplink IP address and a GTP TEID of the femto PDN gateway in step S430. Pass it to entity (! 20).
  • the address of the femto PDN gateway 220 is already registered in the femto serving gateway 260 in step S410 or the APN value may not be in the form of 'LocalPDN.S-TMSI' in step S415.
  • the femto serving gateway 260 proceeds to step S435 to establish a bearer with the femto PDN gateway 220 using the IP address of the femto PDN gateway 220 delivered by the mobility management entity 120.
  • the femto serving gateway 260 delivers uplink information of the femto serving gateway 260 to the mobility management entity.
  • FIG. 5 is a flow diagram illustrating operations after femto serving gateway 260 receives an Update Bearer Request message from mobility management entity 120.
  • the femto serving gateway 260 receives an update bearer request message from the mobility management entity 120 in step S455.
  • the femto serving gateway 260 determines whether the requested bearer is for LBO service. If the requested bearer is for an LBO service, the femto serving gateway 260 proceeds to step S465 and includes downlink information for the femto cell base station 230 in the received update bearer request message. Determine whether there is. If the downlink information is included, the femto serving gateway 260 proceeds to step S470, the downlink information of the femto serving gateway 260 is set to the downlink IP address and GTP TEID of the femto cell base station 230 do. At the same time, the femto serving gateway 260 performs bearer update with the femto PDN gateway 220.
  • step S460 if the bearer receiving the update request is not a bearer for the LBO service or the update bearer request message does not include the downlink information of the base station, the femto serving gateway 260 proceeds to step S475 to S455 The bearer update is performed with the femto PDN gateway 220 as requested in the step.
  • FIG. 6 is a flowchart illustrating a process of transmitting data to the terminal 170 when data to be transmitted to the terminal in the idle mode is generated in the LBO network.
  • the femto PDN gateway 220 transmits a downlink data notification message to the femto serving gateway 260 in step S507.
  • the conventional downlink data notification is a message sent by the serving gateway to the mobility management entity, but in the present invention, the femto PDN gateway 220 is configured to transmit to the femto serving gateway 260.
  • the femto serving gateway 260 Upon receiving the downlink notification message, the femto serving gateway 260 transmits it to the mobility management entity 120 in step S508. Then, the mobility management entity 120 performs paging for the terminal 170 in step S509, and the terminal 170 responds with a NAS service request message in step S510.
  • the mobility management entity 120 in step S511 the new bearer ID through the initial context setup request message (INITIAL CONTEXT SETUP REQUEST), and the uplink to the femto serving base station 260 received in step S315 of FIG. Information and the like are transmitted to the femto cell base station 230.
  • the femto cell base station 230 establishes a radio bearer with the terminal 170 in step S512.
  • the femtocell base station 230 transmits the femtocell base station 230 for data transmitted from the femto serving gateway 260 to the femtocell base station 230 through an initial context setup response message. Transmits downlink information set by the mobile station to the mobility management entity 120.
  • the initial context setup response message includes information such as a downlink IP address, a GTP TEID, and a bearer ID.
  • the mobility management entity 120 then delivers the bearer ID and downlink information to the femtocell base station via the update bearer request message to the femto serving gateway 260 in step S514. Then, the femto serving gateway 260 sets the downlink information to the received femto cell base station 230 as its downlink information, and transmits the downlink information to the femto PDN gateway 220 together with the bearer ID.
  • the bearer information is updated to the femto serving gateway 260 and the mobility management entity 120 through steps S516 and S517.
  • the terminal 170 may then perform direct data communication with the LBO network through the femto PDN gateway 220.
  • the femto PDN gateway 220 may directly transmit the data packet to the femto serving gateway 260 instead of the downlink data notification message in step S507.
  • the process S508 is performed as a subsequent procedure for the transmission of the data packet, so that steps S509 to S517 may be performed in the same manner. Since the detailed procedure has already been described, a detailed description thereof will be omitted.
  • the femto serving gateway 260 may transmit the data packet received from the femto PDN gateway 220 to the femto cell base station 230 after the S514 process.

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Abstract

La présente invention concerne un procédé et un système de support de services LBO dans un réseau de communication sans fil comprenant des femtocellules. Le procédé de support de services LBO selon la présente invention comprend : une première étape dans laquelle un terminal connecté à une station de base pour femtocellule transmet un message de demande de connexion PDN comprenant une information d'identification du terminal à une entité de gestion de mobilité par le biais d'une passerelle de stations de base pour femtocellule, afin de former une porteuse avec une passerelle PDN pour femtocellule connectée à un réseau LBO ; une deuxième étape dans laquelle l'entité de gestion de mobilité transmet un message de demande de création de porteuse à une passerelle de desserte femto ayant la même information d'emplacement que la passerelle de station de base pour femtocellule, afin de former une porteuse LBO ; une troisième étape dans laquelle la passerelle de desserte pour femtocellule acquiert une information d'emplacement de la passerelle PDN pour femtocellule à l'aide de l'information d'identification du terminal ; et une quatrième étape dans laquelle la passerelle de desserte pour femtocellule forme une porteuse de liaison montante LBO ou une porteuse de liaison descendante LBO en utilisant l'information d'emplacement de la passerelle PDN pour femtocellule.
PCT/KR2010/002043 2009-04-03 2010-04-02 Procédé et système de support de services lbo dans un réseau de communication sans fil comprenant des femtocellules WO2010114334A2 (fr)

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KR10-2009-0028736 2009-04-03
KR1020090028736A KR101553297B1 (ko) 2009-04-03 2009-04-03 펨토 셀을 포함하는 무선 통신 네트워크에서의 ｌｂｏ 서비스 지원 방법 및 장치

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KR101587416B1 (ko) * 2014-02-26 2016-01-21 주식회사 이노와이어리스 Ｌｔｅ 펨토셀에서 이동통신 단말기의 ｉｐ 주소 획득 방법
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KR101553297B1 (ko) 2015-09-16
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